Use http.NoBody as per linter (#231)

Reviewed-on: https://codeberg.org/Codeberg/pages-server/pulls/231
Reviewed-by: Gusted <gusted@noreply.codeberg.org>

.ecrc

@@ -0,0 +1,9 @@
+{
+  "Exclude": [
+    ".git",
+    "go.mod", "go.sum",
+    "vendor",
+    "LICENSE",
+    "_test.go"
+  ]
+}

.editorconfig

@@ -0,0 +1,17 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+tab_width = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.go]
+indent_style = tab
+
+[*.md]
+trim_trailing_whitespace = false
+indent_size = 1

.gitignore

@@ -1,5 +1,9 @@
 .idea/
+.cache/
 *.iml
 key-database.pogreb/
 acme-account.json
 build/
+vendor/
+pages
+certs.sqlite

.golangci.yml

@@ -0,0 +1,34 @@
+linters-settings:
+  gocritic:
+    enabled-tags:
+      - diagnostic
+      - experimental
+      - opinionated
+      - performance
+      - style
+    disabled-checks:
+      - importShadow
+      - ifElseChain
+      - hugeParam
+
+linters:
+  disable-all: true
+  enable:
+    - unconvert
+    - gocritic
+    - gofumpt
+    - bidichk
+    - errcheck
+    - gofmt
+    - goimports
+    - gosimple
+    - govet
+    - ineffassign
+    - misspell
+    - staticcheck
+    - typecheck
+    - unused
+    - whitespace
+
+run:
+  timeout: 5m

.woodpecker.yml

@@ -0,0 +1,124 @@
+steps:
+  # use vendor to cache dependencies
+  vendor:
+    image: golang:1.20
+    commands:
+      - go mod vendor
+
+  lint:
+    image: golangci/golangci-lint:latest
+    group: compliant
+    pull: true
+    commands:
+      - go version
+      - go install mvdan.cc/gofumpt@latest
+      - "[ $(gofumpt -extra -l . | wc -l) != 0 ] && { echo 'code not formated'; exit 1; }"
+      - golangci-lint run --timeout 5m --build-tags integration
+
+  editor-config:
+    group: compliant
+    image: mstruebing/editorconfig-checker
+
+  build:
+    group: compliant
+    image: codeberg.org/6543/docker-images/golang_just
+    commands:
+      - go version
+      - just build
+    when:
+      event: [ "pull_request", "push" ]
+
+  docker-dryrun:
+    group: compliant
+    image: plugins/kaniko
+    settings:
+      dockerfile: Dockerfile
+      no_push: true
+      tags: latest
+    when:
+      event: [ "pull_request", "push" ]
+      path: Dockerfile
+
+  build-tag:
+    group: compliant
+    image: codeberg.org/6543/docker-images/golang_just
+    commands:
+      - go version
+      - just build-tag ${CI_COMMIT_TAG##v}
+    when:
+      event: [ "tag" ]
+
+  test:
+    group: test
+    image: codeberg.org/6543/docker-images/golang_just
+    commands:
+      - just test
+
+  integration-tests:
+    group: test
+    image: codeberg.org/6543/docker-images/golang_just
+    commands:
+      - just integration
+    environment:
+      - ACME_API=https://acme.mock.directory
+      - PAGES_DOMAIN=localhost.mock.directory
+      - RAW_DOMAIN=raw.localhost.mock.directory
+      - PORT=4430
+
+  # TODO: remove in next version
+  integration-tests-legacy:
+    group: test
+    image: codeberg.org/6543/docker-images/golang_just
+    commands:
+      - just integration
+    environment:
+      - ACME_API=https://acme.mock.directory
+      - PAGES_DOMAIN=localhost.mock.directory
+      - RAW_DOMAIN=raw.localhost.mock.directory
+      - PORT=4430
+      - DB_TYPE=
+
+  release:
+    image: plugins/gitea-release
+    settings:
+      base_url: https://codeberg.org
+      file_exists: overwrite
+      files: build/codeberg-pages-server
+      api_key:
+        from_secret: bot_token
+    environment:
+      - DRONE_REPO_OWNER=${CI_REPO_OWNER}
+      - DRONE_REPO_NAME=${CI_REPO_NAME}
+      - DRONE_BUILD_EVENT=${CI_BUILD_EVENT}
+      - DRONE_COMMIT_REF=${CI_COMMIT_REF}
+    when:
+      event: [ "tag" ]
+
+  docker-next:
+    image: plugins/kaniko
+    settings:
+      registry: codeberg.org
+      dockerfile: Dockerfile
+      repo: codeberg.org/codeberg/pages-server
+      tags: next
+      username:
+        from_secret: bot_user
+      password:
+        from_secret: bot_token
+    when:
+      event: [ "push" ]
+      branch: ${CI_REPO_DEFAULT_BRANCH}
+
+  docker-tag:
+    image: plugins/kaniko
+    settings:
+      registry: codeberg.org
+      dockerfile: Dockerfile
+      repo: codeberg.org/codeberg/pages-server
+      tags: [ latest, "${CI_COMMIT_TAG}" ]
+      username:
+        from_secret: bot_user
+      password:
+        from_secret: bot_token
+    when:
+      event: [ "tag" ]

Dockerfile

@@ -0,0 +1,14 @@
+FROM techknowlogick/xgo as build
+
+WORKDIR /workspace
+
+COPY . .
+RUN CGO_ENABLED=1 go build -tags 'sqlite sqlite_unlock_notify netgo' -ldflags '-s -w -extldflags "-static" -linkmode external' .
+
+FROM scratch
+COPY --from=build /workspace/pages /pages
+COPY --from=build \
+    /etc/ssl/certs/ca-certificates.crt \
+    /etc/ssl/certs/ca-certificates.crt
+
+ENTRYPOINT ["/pages"]

Justfile

@@ -1,3 +1,6 @@
+CGO_FLAGS := '-extldflags "-static" -linkmode external'
+TAGS      := 'sqlite sqlite_unlock_notify netgo'
+
 dev:
     #!/usr/bin/env bash
     set -euxo pipefail
@@ -6,7 +9,44 @@ dev:
     export PAGES_DOMAIN=localhost.mock.directory
     export RAW_DOMAIN=raw.localhost.mock.directory
     export PORT=4430
-    go run .
+    export LOG_LEVEL=trace
+    go run -tags '{{TAGS}}' .
 
 build:
-    CGO_ENABLED=0 go build -ldflags '-s -w' -v -o build/codeberg-pages-server ./
+    CGO_ENABLED=1 go build -tags '{{TAGS}}' -ldflags '-s -w {{CGO_FLAGS}}' -v -o build/codeberg-pages-server ./
+
+build-tag VERSION:
+    CGO_ENABLED=1 go build -tags '{{TAGS}}' -ldflags '-s -w -X "codeberg.org/codeberg/pages/server/version.Version={{VERSION}}" {{CGO_FLAGS}}' -v -o build/codeberg-pages-server ./
+
+lint: tool-golangci tool-gofumpt
+    golangci-lint run --timeout 5m --build-tags integration
+    # TODO: run editorconfig-checker
+
+fmt: tool-gofumpt
+    gofumpt -w --extra .
+
+clean:
+    go clean ./...
+    rm -rf build/ integration/certs.sqlite integration/key-database.pogreb/ integration/acme-account.json
+
+tool-golangci:
+    @hash golangci-lint> /dev/null 2>&1; if [ $? -ne 0 ]; then \
+    go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest; \
+    fi
+
+tool-gofumpt:
+    @hash gofumpt> /dev/null 2>&1; if [ $? -ne 0 ]; then \
+    go install mvdan.cc/gofumpt@latest; \
+    fi
+
+test:
+    go test -race -cover -tags '{{TAGS}}' codeberg.org/codeberg/pages/server/... codeberg.org/codeberg/pages/html/
+
+test-run TEST:
+    go test -race -tags '{{TAGS}}' -run "^{{TEST}}$" codeberg.org/codeberg/pages/server/... codeberg.org/codeberg/pages/html/
+
+integration:
+    go test -race -tags 'integration {{TAGS}}' codeberg.org/codeberg/pages/integration/...
+
+integration-run TEST:
+    go test -race -tags 'integration {{TAGS}}' -run "^{{TEST}}$" codeberg.org/codeberg/pages/integration/...

README.md

@@ -1,11 +1,64 @@
-## Environment
+# Codeberg Pages
+
+Gitea lacks the ability to host static pages from Git.
+The Codeberg Pages Server addresses this lack by implementing a standalone service
+that connects to Gitea via API.
+It is suitable to be deployed by other Gitea instances, too, to offer static pages hosting to their users.
+
+**End user documentation** can mainly be found at the [Wiki](https://codeberg.org/Codeberg/pages-server/wiki/Overview)
+and the [Codeberg Documentation](https://docs.codeberg.org/codeberg-pages/).
+
+## Quickstart
+
+This is the new Codeberg Pages server, a solution for serving static pages from Gitea repositories.
+Mapping custom domains is not static anymore, but can be done with DNS:
+
+1) add a `.domains` text file to your repository, containing the allowed domains, separated by new lines. The
+first line will be the canonical domain/URL; all other occurrences will be redirected to it.
+
+2) add a CNAME entry to your domain, pointing to `[[{branch}.]{repo}.]{owner}.codeberg.page` (repo defaults to
+"pages", "branch" defaults to the default branch if "repo" is "pages", or to "pages" if "repo" is something else.
+If the branch name contains slash characters, you need to replace "/" in the branch name to "~"):
+  `www.example.org. IN CNAME main.pages.example.codeberg.page.`
+
+3) if a CNAME is set for "www.example.org", you can redirect there from the naked domain by adding an ALIAS record
+for "example.org" (if your provider allows ALIAS or similar records, otherwise use A/AAAA), together with a TXT
+record that points to your repo (just like the CNAME record):
+  `example.org IN ALIAS codeberg.page.`
+  `example.org IN TXT main.pages.example.codeberg.page.`
+
+Certificates are generated, updated and cleaned up automatically via Let's Encrypt through a TLS challenge.
+
+## Deployment
+
+**Warning: Some Caveats Apply**  
+> Currently, the deployment requires you to have some knowledge of system administration as well as understanding and building code,
+> so you can eventually edit non-configurable and codeberg-specific settings.
+> In the future, we'll try to reduce these and make hosting Codeberg Pages as easy as setting up Gitea.
+> If you consider using Pages in practice, please consider contacting us first,
+> we'll then try to share some basic steps and document the current usage for admins
+> (might be changing in the current state).
+
+Deploying the software itself is very easy. You can grab a current release binary or build yourself,
+configure the environment as described below, and you are done.
+
+The hard part is about adding **custom domain support** if you intend to use it.
+SSL certificates (request + renewal) is automatically handled by the Pages Server,
+but if you want to run it on a shared IP address (and not a standalone),
+you'll need to configure your reverse proxy not to terminate the TLS connections,
+but forward the requests on the IP level to the Pages Server.
+
+You can check out a proof of concept in the `haproxy-sni` folder,
+and especially have a look at [this section of the haproxy.cfg](https://codeberg.org/Codeberg/pages-server/src/branch/main/haproxy-sni/haproxy.cfg#L38).
+
+### Environment
 
 - `HOST` & `PORT` (default: `[::]` & `443`): listen address.
 - `PAGES_DOMAIN` (default: `codeberg.page`): main domain for pages.
-- `RAW_DOMAIN` (default: `raw.codeberg.org`): domain for raw resources.
+- `RAW_DOMAIN` (default: `raw.codeberg.page`): domain for raw resources.
 - `GITEA_ROOT` (default: `https://codeberg.org`): root of the upstream Gitea instance.
-- `REDIRECT_BROKEN_DNS` (default: https://docs.codeberg.org/pages/custom-domains/): info page for setting up DNS, shown for invalid DNS setups.
+- `GITEA_API_TOKEN` (default: empty): API token for the Gitea instance to access non-public (e.g. limited) repos.
-- `REDIRECT_RAW_INFO` (default: https://docs.codeberg.org/pages/raw-content/): info page for raw resources, shown if no resource is provided.
+- `RAW_INFO_PAGE` (default: https://docs.codeberg.org/pages/raw-content/): info page for raw resources, shown if no resource is provided.
 - `ACME_API` (default: https://acme-v02.api.letsencrypt.org/directory): set this to https://acme.mock.director to use invalid certificates without any verification (great for debugging).  
   ZeroSSL might be better in the future as it doesn't have rate limits and doesn't clash with the official Codeberg certificates (which are using Let's Encrypt), but I couldn't get it to work yet.
 - `ACME_EMAIL` (default: `noreply@example.email`): Set this to "true" to accept the Terms of Service of your ACME provider.
@@ -15,3 +68,41 @@
 - `ENABLE_HTTP_SERVER` (default: false): Set this to true to enable the HTTP-01 challenge and redirect all other HTTP requests to HTTPS. Currently only works with port 80.
 - `DNS_PROVIDER` (default: use self-signed certificate): Code of the ACME DNS provider for the main domain wildcard.  
   See https://go-acme.github.io/lego/dns/ for available values & additional environment variables.
+- `LOG_LEVEL` (default: warn): Set this to specify the level of logging.
+
+
+## Contributing to the development
+
+The Codeberg team is very open to your contribution.
+Since we are working nicely in a team, it might be hard at times to get started
+(still check out the issues, we always aim to have some things to get you started).
+
+If you have any questions, want to work on a feature or could imagine collaborating with us for some time,
+feel free to ping us in an issue or in a general Matrix chatgroup.
+
+You can also contact the maintainers of this project:
+
+- [momar](https://codeberg.org/momar) [(Matrix)](https://matrix.to/#/@moritz:wuks.space)
+- [6543](https://codeberg.org/6543) [(Matrix)](https://matrix.to/#/@marddl:obermui.de)
+
+### First steps
+
+The code of this repository is split in several modules.
+While heavy refactoring work is currently undergo, you can easily understand the basic structure:
+The `cmd` folder holds the data necessary for interacting with the service via the cli.
+If you are considering to deploy the service yourself, make sure to check it out.
+The heart of the software lives in the `server` folder and is split in several modules.
+After scanning the code, you should quickly be able to understand their function and start hacking on them.
+
+Again: Feel free to get in touch with us for any questions that might arise.
+Thank you very much.
+
+
+### Test Server
+
+run `just dev`
+now this pages should work:
+ - https://cb_pages_tests.localhost.mock.directory:4430/images/827679288a.jpg
+ - https://momar.localhost.mock.directory:4430/ci-testing/
+ - https://momar.localhost.mock.directory:4430/pag/@master/
+ - https://mock-pages.codeberg-test.org:4430/README.md

certificates.go

@@ -1,509 +0,0 @@
-package main
-
-import (
-	"bytes"
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/elliptic"
-	"crypto/rand"
-	"crypto/tls"
-	"crypto/x509"
-	"encoding/gob"
-	"encoding/json"
-	"errors"
-	"github.com/OrlovEvgeny/go-mcache"
-	"github.com/akrylysov/pogreb/fs"
-	"github.com/go-acme/lego/v4/certificate"
-	"github.com/go-acme/lego/v4/challenge"
-	"github.com/go-acme/lego/v4/challenge/resolver"
-	"github.com/go-acme/lego/v4/challenge/tlsalpn01"
-	"github.com/go-acme/lego/v4/providers/dns"
-	"io/ioutil"
-	"log"
-	"os"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/akrylysov/pogreb"
-	"github.com/reugn/equalizer"
-
-	"github.com/go-acme/lego/v4/certcrypto"
-	"github.com/go-acme/lego/v4/lego"
-	"github.com/go-acme/lego/v4/registration"
-)
-
-// tlsConfig contains the configuration for generating, serving and cleaning up Let's Encrypt certificates.
-var tlsConfig = &tls.Config{
-	// check DNS name & get certificate from Let's Encrypt
-	GetCertificate: func(info *tls.ClientHelloInfo) (*tls.Certificate, error) {
-		sni := strings.ToLower(strings.TrimSpace(info.ServerName))
-		sniBytes := []byte(sni)
-		if len(sni) < 1 {
-			return nil, errors.New("missing sni")
-		}
-
-		if info.SupportedProtos != nil {
-			for _, proto := range info.SupportedProtos {
-				if proto == tlsalpn01.ACMETLS1Protocol {
-					challenge, ok := challengeCache.Get(sni)
-					if !ok {
-						return nil, errors.New("no challenge for this domain")
-					}
-					cert, err := tlsalpn01.ChallengeCert(sni, challenge.(string))
-					if err != nil {
-						return nil, err
-					}
-					return cert, nil
-				}
-			}
-		}
-
-		targetOwner := ""
-		if bytes.HasSuffix(sniBytes, MainDomainSuffix) || bytes.Equal(sniBytes, MainDomainSuffix[1:]) {
-			// deliver default certificate for the main domain (*.codeberg.page)
-			sniBytes = MainDomainSuffix
-			sni = string(sniBytes)
-		} else {
-			var targetRepo, targetBranch string
-			targetOwner, targetRepo, targetBranch = getTargetFromDNS(sni)
-			if targetOwner == "" {
-				// DNS not set up, return main certificate to redirect to the docs
-				sniBytes = MainDomainSuffix
-				sni = string(sniBytes)
-			} else {
-				_, _ = targetRepo, targetBranch
-				_, valid := checkCanonicalDomain(targetOwner, targetRepo, targetBranch, sni)
-				if !valid {
-					sniBytes = MainDomainSuffix
-					sni = string(sniBytes)
-				}
-			}
-		}
-
-		if tlsCertificate, ok := keyCache.Get(sni); ok {
-			// we can use an existing certificate object
-			return tlsCertificate.(*tls.Certificate), nil
-		}
-
-		var tlsCertificate tls.Certificate
-		var err error
-		var ok bool
-		if tlsCertificate, ok = retrieveCertFromDB(sniBytes); !ok {
-			// request a new certificate
-			if bytes.Equal(sniBytes, MainDomainSuffix) {
-				return nil, errors.New("won't request certificate for main domain, something really bad has happened")
-			}
-
-			tlsCertificate, err = obtainCert(acmeClient, []string{sni}, nil, targetOwner)
-			if err != nil {
-				return nil, err
-			}
-		}
-
-		err = keyCache.Set(sni, &tlsCertificate, 15 * time.Minute)
-		if err != nil {
-			panic(err)
-		}
-		return &tlsCertificate, nil
-	},
-	PreferServerCipherSuites: true,
-	NextProtos: []string{
-		"http/1.1",
-		tlsalpn01.ACMETLS1Protocol,
-	},
-
-	// generated 2021-07-13, Mozilla Guideline v5.6, Go 1.14.4, intermediate configuration
-	// https://ssl-config.mozilla.org/#server=go&version=1.14.4&config=intermediate&guideline=5.6
-	MinVersion: tls.VersionTLS12,
-	CipherSuites: []uint16{
-		tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
-		tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
-		tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
-		tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
-		tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
-		tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
-	},
-}
-
-var keyCache = mcache.New()
-var keyDatabase *pogreb.DB
-
-func CheckUserLimit(user string) (error) {
-	userLimit, ok := acmeClientCertificateLimitPerUser[user]
-	if !ok {
-		// Each Codeberg user can only add 10 new domains per day.
-		userLimit = equalizer.NewTokenBucket(10, time.Hour * 24)
-		acmeClientCertificateLimitPerUser[user] = userLimit
-	}
-	if !userLimit.Ask() {
-		return errors.New("rate limit exceeded: 10 certificates per user per 24 hours")
-	}
-	return nil
-}
-
-var myAcmeAccount AcmeAccount
-var myAcmeConfig *lego.Config
-
-type AcmeAccount struct {
-	Email        string
-	Registration *registration.Resource
-	Key          crypto.PrivateKey `json:"-"`
-	KeyPEM       string `json:"Key"`
-}
-func (u *AcmeAccount) GetEmail() string {
-	return u.Email
-}
-func (u AcmeAccount) GetRegistration() *registration.Resource {
-	return u.Registration
-}
-func (u *AcmeAccount) GetPrivateKey() crypto.PrivateKey {
-	return u.Key
-}
-
-func newAcmeClient(configureChallenge func(*resolver.SolverManager) error) *lego.Client {
-	acmeClient, err := lego.NewClient(myAcmeConfig)
-	if err != nil {
-		panic(err)
-	}
-	err = configureChallenge(acmeClient.Challenge)
-	if err != nil {
-		panic(err)
-	}
-	return acmeClient
-}
-
-var acmeClient, mainDomainAcmeClient *lego.Client
-var acmeClientCertificateLimitPerUser = map[string]*equalizer.TokenBucket{}
-
-// rate limit is 300 / 3 hours, we want 200 / 2 hours but to refill more often, so that's 25 new domains every 15 minutes
-// TODO: when this is used a lot, we probably have to think of a somewhat better solution?
-var acmeClientOrderLimit = equalizer.NewTokenBucket(25, 15 * time.Minute)
-
-// rate limit is 20 / second, we want 10 / second
-var acmeClientRequestLimit = equalizer.NewTokenBucket(10, 1 * time.Second)
-
-var challengeCache = mcache.New()
-type AcmeTLSChallengeProvider struct{}
-var _ challenge.Provider = AcmeTLSChallengeProvider{}
-func (a AcmeTLSChallengeProvider) Present(domain, _, keyAuth string) error {
-	return challengeCache.Set(domain, keyAuth, 1*time.Hour)
-}
-func (a AcmeTLSChallengeProvider) CleanUp(domain, _, _ string) error {
-	challengeCache.Remove(domain)
-	return nil
-}
-type AcmeHTTPChallengeProvider struct{}
-var _ challenge.Provider = AcmeHTTPChallengeProvider{}
-func (a AcmeHTTPChallengeProvider) Present(domain, token, keyAuth string) error {
-	return challengeCache.Set(domain + "/" + token, keyAuth, 1*time.Hour)
-}
-func (a AcmeHTTPChallengeProvider) CleanUp(domain, token, _ string) error {
-	challengeCache.Remove(domain + "/" + token)
-	return nil
-}
-
-func retrieveCertFromDB(sni []byte) (tls.Certificate, bool) {
-	// parse certificate from database
-	resBytes, err := keyDatabase.Get(sni)
-	if err != nil {
-		// key database is not working
-		panic(err)
-	}
-	if resBytes == nil {
-		return tls.Certificate{}, false
-	}
-
-	resGob := bytes.NewBuffer(resBytes)
-	resDec := gob.NewDecoder(resGob)
-	res := &certificate.Resource{}
-	err = resDec.Decode(res)
-	if err != nil {
-		panic(err)
-	}
-
-	tlsCertificate, err := tls.X509KeyPair(res.Certificate, res.PrivateKey)
-	if err != nil {
-		panic(err)
-	}
-
-	if !bytes.Equal(sni, MainDomainSuffix) {
-		tlsCertificate.Leaf, err = x509.ParseCertificate(tlsCertificate.Certificate[0])
-		if err != nil {
-			panic(err)
-		}
-
-		// renew certificates 7 days before they expire
-		if !tlsCertificate.Leaf.NotAfter.After(time.Now().Add(-7 * 24 * time.Hour)) {
-			go (func() {
-				tlsCertificate, err = obtainCert(acmeClient, []string{string(sni)}, res, "")
-				if err != nil {
-					log.Printf("Couldn't renew certificate for %s: %s", sni, err)
-				}
-			})()
-		}
-	}
-
-	return tlsCertificate, true
-}
-
-var obtainLocks = sync.Map{}
-func obtainCert(acmeClient *lego.Client, domains []string, renew *certificate.Resource, user string) (tls.Certificate, error) {
-	name := strings.TrimPrefix(domains[0], "*")
-	if os.Getenv("DNS_PROVIDER") == "" && len(domains[0]) > 0 && domains[0][0] == '*' {
-		domains = domains[1:]
-	}
-
-	// lock to avoid simultaneous requests
-	_, working := obtainLocks.LoadOrStore(name, struct{}{})
-	if working {
-		for working {
-			time.Sleep(100 * time.Millisecond)
-			_, working = obtainLocks.Load(name)
-		}
-		cert, ok := retrieveCertFromDB([]byte(name))
-		if !ok {
-			return tls.Certificate{}, errors.New("certificate failed in synchronous request")
-		}
-		return cert, nil
-	}
-	defer obtainLocks.Delete(name)
-
-	// request actual cert
-	var res *certificate.Resource
-	var err error
-	if renew != nil {
-		if os.Getenv("ACME_USE_RATE_LIMITS") != "false" {
-			acmeClientRequestLimit.Take()
-		}
-		log.Printf("Renewing certificate for %v", domains)
-		res, err = acmeClient.Certificate.Renew(*renew, true, false, "")
-	} else {
-		if user != "" {
-			if err := CheckUserLimit(user); err != nil {
-				return tls.Certificate{}, err
-			}
-		}
-
-		if os.Getenv("ACME_USE_RATE_LIMITS") != "false" {
-			acmeClientOrderLimit.Take()
-			acmeClientRequestLimit.Take()
-		}
-		log.Printf("Requesting new certificate for %v", domains)
-		res, err = acmeClient.Certificate.Obtain(certificate.ObtainRequest{
-			Domains:    domains,
-			Bundle:     true,
-			MustStaple: false,
-		})
-	}
-	if err != nil {
-		log.Printf("Couldn't obtain certificate for %v: %s", domains, err)
-		return tls.Certificate{}, err
-	}
-	log.Printf("Obtained certificate for %v", domains)
-
-	var resGob bytes.Buffer
-	resEnc := gob.NewEncoder(&resGob)
-	err = resEnc.Encode(res)
-	if err != nil {
-		panic(err)
-	}
-	err = keyDatabase.Put([]byte(name), resGob.Bytes())
-	if err != nil {
-		_ = keyDatabase.Delete([]byte(name + "/key"))
-		obtainLocks.Delete(name)
-		panic(err)
-	}
-
-	tlsCertificate, err := tls.X509KeyPair(res.Certificate, res.PrivateKey)
-	if err != nil {
-		return tls.Certificate{}, err
-	}
-	return tlsCertificate, nil
-}
-
-func setupCertificates() {
-	var err error
-	keyDatabase, err = pogreb.Open("key-database.pogreb", &pogreb.Options{
-		BackgroundSyncInterval:       30 * time.Second,
-		BackgroundCompactionInterval: 6 * time.Hour,
-		FileSystem:                   fs.OSMMap,
-	})
-	if err != nil {
-		panic(err)
-	}
-
-	if os.Getenv("ACME_ACCEPT_TERMS") != "true" || (os.Getenv("DNS_PROVIDER") == "" && os.Getenv("ACME_API") != "https://acme.mock.directory") {
-		panic(errors.New("you must set ACME_ACCEPT_TERMS and DNS_PROVIDER, unless ACME_API is set to https://acme.mock.directory"))
-	}
-
-	if account, err := ioutil.ReadFile("acme-account.json"); err == nil {
-		err = json.Unmarshal(account, &myAcmeAccount)
-		if err != nil {
-			panic(err)
-		}
-		myAcmeAccount.Key, err = certcrypto.ParsePEMPrivateKey([]byte(myAcmeAccount.KeyPEM))
-		if err != nil {
-			panic(err)
-		}
-		myAcmeConfig = lego.NewConfig(&myAcmeAccount)
-		myAcmeConfig.CADirURL = envOr("ACME_API", "https://acme-v02.api.letsencrypt.org/directory")
-		myAcmeConfig.Certificate.KeyType = certcrypto.RSA2048
-		newAcmeClient(func(manager *resolver.SolverManager) error { return nil })
-	} else if os.IsNotExist(err) {
-		privateKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-		if err != nil {
-			panic(err)
-		}
-		myAcmeAccount = AcmeAccount{
-			Email: envOr("ACME_EMAIL", "noreply@example.email"),
-			Key:   privateKey,
-			KeyPEM: string(certcrypto.PEMEncode(privateKey)),
-		}
-		myAcmeConfig = lego.NewConfig(&myAcmeAccount)
-		myAcmeConfig.CADirURL = envOr("ACME_API", "https://acme-v02.api.letsencrypt.org/directory")
-		myAcmeConfig.Certificate.KeyType = certcrypto.RSA2048
-		tempClient := newAcmeClient(func(manager *resolver.SolverManager) error { return nil })
-
-		// accept terms & log in to EAB
-		if os.Getenv("ACME_EAB_KID") == "" || os.Getenv("ACME_EAB_HMAC") == "" {
-			reg, err := tempClient.Registration.Register(registration.RegisterOptions{TermsOfServiceAgreed: os.Getenv("ACME_ACCEPT_TERMS") == "true"})
-			if err != nil {
-				panic(err)
-			}
-			myAcmeAccount.Registration = reg
-		} else {
-			reg, err := tempClient.Registration.RegisterWithExternalAccountBinding(registration.RegisterEABOptions{
-				TermsOfServiceAgreed: os.Getenv("ACME_ACCEPT_TERMS") == "true",
-				Kid: os.Getenv("ACME_EAB_KID"),
-				HmacEncoded: os.Getenv("ACME_EAB_HMAC"),
-			})
-			if err != nil {
-				panic(err)
-			}
-			myAcmeAccount.Registration = reg
-		}
-
-		acmeAccountJson, err := json.Marshal(myAcmeAccount)
-		if err != nil {
-			panic(err)
-		}
-		err = ioutil.WriteFile("acme-account.json", acmeAccountJson, 0600)
-		if err != nil {
-			panic(err)
-		}
-	} else {
-		panic(err)
-	}
-
-	acmeClient = newAcmeClient(func(challenge *resolver.SolverManager) error {
-		err = challenge.SetTLSALPN01Provider(AcmeTLSChallengeProvider{})
-		if err != nil {
-			return err
-		}
-		if os.Getenv("ENABLE_HTTP_SERVER") == "true" {
-			return challenge.SetHTTP01Provider(AcmeHTTPChallengeProvider{})
-		}
-		return err
-	})
-	mainDomainAcmeClient = newAcmeClient(func(challenge *resolver.SolverManager) error {
-		if os.Getenv("DNS_PROVIDER") == "" {
-			// using mock server, don't use wildcard certs
-			return challenge.SetTLSALPN01Provider(AcmeTLSChallengeProvider{})
-		}
-		provider, err := dns.NewDNSChallengeProviderByName(os.Getenv("DNS_PROVIDER"))
-		if err != nil {
-			return err
-		}
-		return challenge.SetDNS01Provider(provider)
-	})
-
-	resBytes, err := keyDatabase.Get(MainDomainSuffix)
-	if err != nil {
-		// key database is not working
-		panic(err)
-	} else if resBytes == nil {
-		_, err = obtainCert(mainDomainAcmeClient, []string{"*" + string(MainDomainSuffix), string(MainDomainSuffix[1:])}, nil, "")
-		if err != nil {
-			log.Fatalf("Couldn't renew certificate for *%s: %s", MainDomainSuffix, err)
-		}
-	}
-
-	go (func() {
-		for {
-			err := keyDatabase.Sync()
-			if err != nil {
-				log.Printf("Syncinc key database failed: %s", err)
-			}
-			time.Sleep(5 * time.Minute)
-		}
-	})()
-	go (func() {
-		for {
-			// clean up expired certs
-			now := time.Now()
-			expiredCertCount := 0
-			key, resBytes, err := keyDatabase.Items().Next()
-			for err == nil {
-				if !bytes.Equal(key, MainDomainSuffix) {
-					resGob := bytes.NewBuffer(resBytes)
-					resDec := gob.NewDecoder(resGob)
-					res := &certificate.Resource{}
-					err = resDec.Decode(res)
-					if err != nil {
-						panic(err)
-					}
-
-					tlsCertificates, err := certcrypto.ParsePEMBundle(res.Certificate)
-					if err != nil || !tlsCertificates[0].NotAfter.After(now) {
-						err := keyDatabase.Delete(key)
-						if err != nil {
-							log.Printf("Deleting expired certificate for %s failed: %s", string(key), err)
-						} else {
-							expiredCertCount++
-						}
-					}
-				}
-				key, resBytes, err = keyDatabase.Items().Next()
-			}
-			log.Printf("Removed %d expired certificates from the database", expiredCertCount)
-
-			// compact the database
-			result, err := keyDatabase.Compact()
-			if err != nil {
-				log.Printf("Compacting key database failed: %s", err)
-			} else {
-				log.Printf("Compacted key database (%+v)", result)
-			}
-
-			// update main cert
-			resBytes, err = keyDatabase.Get(MainDomainSuffix)
-			if err != nil {
-				// key database is not working
-				panic(err)
-			}
-
-			resGob := bytes.NewBuffer(resBytes)
-			resDec := gob.NewDecoder(resGob)
-			res := &certificate.Resource{}
-			err = resDec.Decode(res)
-			if err != nil {
-				panic(err)
-			}
-
-			tlsCertificates, err := certcrypto.ParsePEMBundle(res.Certificate)
-
-			// renew main certificate 30 days before it expires
-			if !tlsCertificates[0].NotAfter.After(time.Now().Add(-30 * 24 * time.Hour)) {
-				go (func() {
-					_, err = obtainCert(mainDomainAcmeClient, []string{"*" + string(MainDomainSuffix), string(MainDomainSuffix[1:])}, res, "")
-					if err != nil {
-						log.Printf("Couldn't renew certificate for *%s: %s", MainDomainSuffix, err)
-					}
-				})()
-			}
-
-			time.Sleep(12 * time.Hour)
-		}
-	})()
-}

cmd/certs.go

@@ -0,0 +1,128 @@
+package cmd
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+	"github.com/urfave/cli/v2"
+
+	"codeberg.org/codeberg/pages/server/database"
+)
+
+var Certs = &cli.Command{
+	Name:  "certs",
+	Usage: "manage certs manually",
+	Subcommands: []*cli.Command{
+		{
+			Name:   "list",
+			Usage:  "list all certificates in the database",
+			Action: listCerts,
+		},
+		{
+			Name:   "remove",
+			Usage:  "remove a certificate from the database",
+			Action: removeCert,
+		},
+		{
+			Name:   "migrate",
+			Usage:  "migrate from \"pogreb\" driver to dbms driver",
+			Action: migrateCerts,
+		},
+	},
+	Flags: append(CertStorageFlags, []cli.Flag{
+		&cli.BoolFlag{
+			Name:    "verbose",
+			Usage:   "print trace info",
+			EnvVars: []string{"VERBOSE"},
+			Value:   false,
+		},
+	}...),
+}
+
+func migrateCerts(ctx *cli.Context) error {
+	dbType := ctx.String("db-type")
+	if dbType == "" {
+		dbType = "sqlite3"
+	}
+	dbConn := ctx.String("db-conn")
+	dbPogrebConn := ctx.String("db-pogreb")
+	verbose := ctx.Bool("verbose")
+
+	log.Level(zerolog.InfoLevel)
+	if verbose {
+		log.Level(zerolog.TraceLevel)
+	}
+
+	xormDB, err := database.NewXormDB(dbType, dbConn)
+	if err != nil {
+		return fmt.Errorf("could not connect to database: %w", err)
+	}
+	defer xormDB.Close()
+
+	pogrebDB, err := database.NewPogreb(dbPogrebConn)
+	if err != nil {
+		return fmt.Errorf("could not open database: %w", err)
+	}
+	defer pogrebDB.Close()
+
+	fmt.Printf("Start migration from \"%s\" to \"%s:%s\" ...\n", dbPogrebConn, dbType, dbConn)
+
+	certs, err := pogrebDB.Items(0, 0)
+	if err != nil {
+		return err
+	}
+
+	for _, cert := range certs {
+		if err := xormDB.Put(cert.Domain, cert.Raw()); err != nil {
+			return err
+		}
+	}
+
+	fmt.Println("... done")
+	return nil
+}
+
+func listCerts(ctx *cli.Context) error {
+	certDB, closeFn, err := openCertDB(ctx)
+	if err != nil {
+		return err
+	}
+	defer closeFn()
+
+	items, err := certDB.Items(0, 0)
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("Domain\tValidTill\n\n")
+	for _, cert := range items {
+		fmt.Printf("%s\t%s\n",
+			cert.Domain,
+			time.Unix(cert.ValidTill, 0).Format(time.RFC3339))
+	}
+	return nil
+}
+
+func removeCert(ctx *cli.Context) error {
+	if ctx.Args().Len() < 1 {
+		return fmt.Errorf("'certs remove' requires at least one domain as an argument")
+	}
+
+	domains := ctx.Args().Slice()
+
+	certDB, closeFn, err := openCertDB(ctx)
+	if err != nil {
+		return err
+	}
+	defer closeFn()
+
+	for _, domain := range domains {
+		fmt.Printf("Removing domain %s from the database...\n", domain)
+		if err := certDB.Delete(domain); err != nil {
+			return err
+		}
+	}
+	return nil
+}

cmd/flags.go

@@ -0,0 +1,155 @@
+package cmd
+
+import (
+	"github.com/urfave/cli/v2"
+)
+
+var (
+	CertStorageFlags = []cli.Flag{
+		&cli.StringFlag{
+			// TODO: remove in next version
+			// DEPRICATED
+			Name:    "db-pogreb",
+			Value:   "key-database.pogreb",
+			EnvVars: []string{"DB_POGREB"},
+		},
+		&cli.StringFlag{
+			Name:    "db-type",
+			Value:   "", // TODO: "sqlite3" in next version
+			EnvVars: []string{"DB_TYPE"},
+		},
+		&cli.StringFlag{
+			Name:    "db-conn",
+			Value:   "certs.sqlite",
+			EnvVars: []string{"DB_CONN"},
+		},
+	}
+
+	ServerFlags = append(CertStorageFlags, []cli.Flag{
+		// #############
+		// ### Gitea ###
+		// #############
+		// GiteaRoot specifies the root URL of the Gitea instance, without a trailing slash.
+		&cli.StringFlag{
+			Name:    "gitea-root",
+			Usage:   "specifies the root URL of the Gitea instance, without a trailing slash.",
+			EnvVars: []string{"GITEA_ROOT"},
+			Value:   "https://codeberg.org",
+		},
+		// GiteaApiToken specifies an api token for the Gitea instance
+		&cli.StringFlag{
+			Name:    "gitea-api-token",
+			Usage:   "specifies an api token for the Gitea instance",
+			EnvVars: []string{"GITEA_API_TOKEN"},
+			Value:   "",
+		},
+		&cli.BoolFlag{
+			Name:    "enable-lfs-support",
+			Usage:   "enable lfs support, require gitea >= v1.17.0 as backend",
+			EnvVars: []string{"ENABLE_LFS_SUPPORT"},
+			Value:   true,
+		},
+		&cli.BoolFlag{
+			Name:    "enable-symlink-support",
+			Usage:   "follow symlinks if enabled, require gitea >= v1.18.0 as backend",
+			EnvVars: []string{"ENABLE_SYMLINK_SUPPORT"},
+			Value:   true,
+		},
+
+		// ###########################
+		// ### Page Server Domains ###
+		// ###########################
+		// MainDomainSuffix specifies the main domain (starting with a dot) for which subdomains shall be served as static
+		// pages, or used for comparison in CNAME lookups. Static pages can be accessed through
+		// https://{owner}.{MainDomain}[/{repo}], with repo defaulting to "pages".
+		&cli.StringFlag{
+			Name:    "pages-domain",
+			Usage:   "specifies the main domain (starting with a dot) for which subdomains shall be served as static pages",
+			EnvVars: []string{"PAGES_DOMAIN"},
+			Value:   "codeberg.page",
+		},
+		// RawDomain specifies the domain from which raw repository content shall be served in the following format:
+		// https://{RawDomain}/{owner}/{repo}[/{branch|tag|commit}/{version}]/{filepath...}
+		// (set to []byte(nil) to disable raw content hosting)
+		&cli.StringFlag{
+			Name:    "raw-domain",
+			Usage:   "specifies the domain from which raw repository content shall be served, not set disable raw content hosting",
+			EnvVars: []string{"RAW_DOMAIN"},
+			Value:   "raw.codeberg.page",
+		},
+		// RawInfoPage will be shown (with a redirect) when trying to access RawDomain directly (or without owner/repo/path).
+		&cli.StringFlag{
+			Name:    "raw-info-page",
+			Usage:   "will be shown (with a redirect) when trying to access $RAW_DOMAIN directly (or without owner/repo/path)",
+			EnvVars: []string{"RAW_INFO_PAGE"},
+			Value:   "https://docs.codeberg.org/codeberg-pages/raw-content/",
+		},
+
+		// #########################
+		// ### Page Server Setup ###
+		// #########################
+		&cli.StringFlag{
+			Name:    "host",
+			Usage:   "specifies host of listening address",
+			EnvVars: []string{"HOST"},
+			Value:   "[::]",
+		},
+		&cli.StringFlag{
+			Name:    "port",
+			Usage:   "specifies port of listening address",
+			EnvVars: []string{"PORT"},
+			Value:   "443",
+		},
+		&cli.BoolFlag{
+			Name: "enable-http-server",
+			// TODO: desc
+			EnvVars: []string{"ENABLE_HTTP_SERVER"},
+		},
+		&cli.StringFlag{
+			Name:    "log-level",
+			Value:   "warn",
+			Usage:   "specify at which log level should be logged. Possible options: info, warn, error, fatal",
+			EnvVars: []string{"LOG_LEVEL"},
+		},
+
+		// ############################
+		// ### ACME Client Settings ###
+		// ############################
+		&cli.StringFlag{
+			Name:    "acme-api-endpoint",
+			EnvVars: []string{"ACME_API"},
+			Value:   "https://acme-v02.api.letsencrypt.org/directory",
+		},
+		&cli.StringFlag{
+			Name:    "acme-email",
+			EnvVars: []string{"ACME_EMAIL"},
+			Value:   "noreply@example.email",
+		},
+		&cli.BoolFlag{
+			Name: "acme-use-rate-limits",
+			// TODO: Usage
+			EnvVars: []string{"ACME_USE_RATE_LIMITS"},
+			Value:   true,
+		},
+		&cli.BoolFlag{
+			Name: "acme-accept-terms",
+			// TODO: Usage
+			EnvVars: []string{"ACME_ACCEPT_TERMS"},
+		},
+		&cli.StringFlag{
+			Name: "acme-eab-kid",
+			// TODO: Usage
+			EnvVars: []string{"ACME_EAB_KID"},
+		},
+		&cli.StringFlag{
+			Name: "acme-eab-hmac",
+			// TODO: Usage
+			EnvVars: []string{"ACME_EAB_HMAC"},
+		},
+		&cli.StringFlag{
+			Name: "dns-provider",
+			// TODO: Usage
+			EnvVars: []string{"DNS_PROVIDER"},
+		},
+	}...)
+)

cmd/main.go

@@ -0,0 +1,151 @@
+package cmd
+
+import (
+	"context"
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"net"
+	"net/http"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+	"github.com/urfave/cli/v2"
+
+	"codeberg.org/codeberg/pages/server"
+	"codeberg.org/codeberg/pages/server/cache"
+	"codeberg.org/codeberg/pages/server/certificates"
+	"codeberg.org/codeberg/pages/server/gitea"
+	"codeberg.org/codeberg/pages/server/handler"
+)
+
+// AllowedCorsDomains lists the domains for which Cross-Origin Resource Sharing is allowed.
+// TODO: make it a flag
+var AllowedCorsDomains = []string{
+	"fonts.codeberg.org",
+	"design.codeberg.org",
+}
+
+// BlacklistedPaths specifies forbidden path prefixes for all Codeberg Pages.
+// TODO: Make it a flag too
+var BlacklistedPaths = []string{
+	"/.well-known/acme-challenge/",
+}
+
+// Serve sets up and starts the web server.
+func Serve(ctx *cli.Context) error {
+	// Initialize the logger.
+	logLevel, err := zerolog.ParseLevel(ctx.String("log-level"))
+	if err != nil {
+		return err
+	}
+	log.Logger = zerolog.New(zerolog.ConsoleWriter{Out: os.Stderr}).With().Timestamp().Logger().Level(logLevel)
+
+	giteaRoot := ctx.String("gitea-root")
+	giteaAPIToken := ctx.String("gitea-api-token")
+	rawDomain := ctx.String("raw-domain")
+	mainDomainSuffix := ctx.String("pages-domain")
+	rawInfoPage := ctx.String("raw-info-page")
+	listeningAddress := fmt.Sprintf("%s:%s", ctx.String("host"), ctx.String("port"))
+	enableHTTPServer := ctx.Bool("enable-http-server")
+
+	acmeAPI := ctx.String("acme-api-endpoint")
+	acmeMail := ctx.String("acme-email")
+	acmeUseRateLimits := ctx.Bool("acme-use-rate-limits")
+	acmeAcceptTerms := ctx.Bool("acme-accept-terms")
+	acmeEabKID := ctx.String("acme-eab-kid")
+	acmeEabHmac := ctx.String("acme-eab-hmac")
+	dnsProvider := ctx.String("dns-provider")
+	if (!acmeAcceptTerms || dnsProvider == "") && acmeAPI != "https://acme.mock.directory" {
+		return errors.New("you must set $ACME_ACCEPT_TERMS and $DNS_PROVIDER, unless $ACME_API is set to https://acme.mock.directory")
+	}
+
+	allowedCorsDomains := AllowedCorsDomains
+	if rawDomain != "" {
+		allowedCorsDomains = append(allowedCorsDomains, rawDomain)
+	}
+
+	// Make sure MainDomain has a trailing dot
+	if !strings.HasPrefix(mainDomainSuffix, ".") {
+		mainDomainSuffix = "." + mainDomainSuffix
+	}
+
+	// Init ssl cert database
+	certDB, closeFn, err := openCertDB(ctx)
+	if err != nil {
+		return err
+	}
+	defer closeFn()
+
+	keyCache := cache.NewKeyValueCache()
+	challengeCache := cache.NewKeyValueCache()
+	// canonicalDomainCache stores canonical domains
+	canonicalDomainCache := cache.NewKeyValueCache()
+	// dnsLookupCache stores DNS lookups for custom domains
+	dnsLookupCache := cache.NewKeyValueCache()
+	// clientResponseCache stores responses from the Gitea server
+	clientResponseCache := cache.NewKeyValueCache()
+
+	giteaClient, err := gitea.NewClient(giteaRoot, giteaAPIToken, clientResponseCache, ctx.Bool("enable-symlink-support"), ctx.Bool("enable-lfs-support"))
+	if err != nil {
+		return fmt.Errorf("could not create new gitea client: %v", err)
+	}
+
+	// Create handler based on settings
+	httpsHandler := handler.Handler(mainDomainSuffix, rawDomain,
+		giteaClient,
+		rawInfoPage,
+		BlacklistedPaths, allowedCorsDomains,
+		dnsLookupCache, canonicalDomainCache)
+
+	httpHandler := server.SetupHTTPACMEChallengeServer(challengeCache)
+
+	// Setup listener and TLS
+	log.Info().Msgf("Listening on https://%s", listeningAddress)
+	listener, err := net.Listen("tcp", listeningAddress)
+	if err != nil {
+		return fmt.Errorf("couldn't create listener: %v", err)
+	}
+
+	listener = tls.NewListener(listener, certificates.TLSConfig(mainDomainSuffix,
+		giteaClient,
+		dnsProvider,
+		acmeUseRateLimits,
+		keyCache, challengeCache, dnsLookupCache, canonicalDomainCache,
+		certDB))
+
+	acmeConfig, err := certificates.SetupAcmeConfig(acmeAPI, acmeMail, acmeEabHmac, acmeEabKID, acmeAcceptTerms)
+	if err != nil {
+		return err
+	}
+
+	if err := certificates.SetupCertificates(mainDomainSuffix, dnsProvider, acmeConfig, acmeUseRateLimits, enableHTTPServer, challengeCache, certDB); err != nil {
+		return err
+	}
+
+	interval := 12 * time.Hour
+	certMaintainCtx, cancelCertMaintain := context.WithCancel(context.Background())
+	defer cancelCertMaintain()
+	go certificates.MaintainCertDB(certMaintainCtx, interval, mainDomainSuffix, dnsProvider, acmeUseRateLimits, certDB)
+
+	if enableHTTPServer {
+		go func() {
+			log.Info().Msg("Start HTTP server listening on :80")
+			err := http.ListenAndServe("[::]:80", httpHandler)
+			if err != nil {
+				log.Panic().Err(err).Msg("Couldn't start HTTP fastServer")
+			}
+		}()
+	}
+
+	// Start the web fastServer
+	log.Info().Msgf("Start listening on %s", listener.Addr())
+	if err := http.Serve(listener, httpsHandler); err != nil {
+		log.Panic().Err(err).Msg("Couldn't start fastServer")
+	}
+
+	return nil
+}

cmd/setup.go

@@ -0,0 +1,45 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/rs/zerolog/log"
+	"github.com/urfave/cli/v2"
+
+	"codeberg.org/codeberg/pages/server/database"
+)
+
+func openCertDB(ctx *cli.Context) (certDB database.CertDB, closeFn func(), err error) {
+	if ctx.String("db-type") != "" {
+		log.Trace().Msg("use xorm mode")
+		certDB, err = database.NewXormDB(ctx.String("db-type"), ctx.String("db-conn"))
+		if err != nil {
+			return nil, nil, fmt.Errorf("could not connect to database: %w", err)
+		}
+	} else {
+		// TODO: remove in next version
+		fmt.Println(`
+######################
+## W A R N I N G !!! #
+######################
+
+You use "pogreb" witch is deprecated and will be removed in the next version.
+Please switch to sqlite, mysql or postgres !!!
+
+The simplest way is, to use './pages certs migrate' and set environment var DB_TYPE to 'sqlite' on next start.`)
+		log.Error().Msg("depricated \"pogreb\" used\n")
+
+		certDB, err = database.NewPogreb(ctx.String("db-pogreb"))
+		if err != nil {
+			return nil, nil, fmt.Errorf("could not create database: %w", err)
+		}
+	}
+
+	closeFn = func() {
+		if err := certDB.Close(); err != nil {
+			log.Error().Err(err)
+		}
+	}
+
+	return certDB, closeFn, nil
+}

debug-stepper/stepper.go

@@ -1,68 +0,0 @@
-package debug_stepper
-
-import (
-	"fmt"
-	"os"
-	"strings"
-	"time"
-)
-
-var Enabled = strings.HasSuffix(os.Args[0], ".test") || os.Getenv("DEBUG") == "1"
-
-var Logger = func(s string, i ...interface{}) {
-	fmt.Printf(s, i...)
-}
-
-type Stepper struct {
-	Name string
-	Start time.Time
-	LastStep time.Time
-	Completion time.Time
-}
-
-func Start(name string) *Stepper {
-	if !Enabled {
-		return nil
-	}
-	t := time.Now()
-	Logger("%s: started at %s\n", name, t.Format(time.RFC3339))
-	return &Stepper{
-		Name: name,
-		Start: t,
-		LastStep: t,
-	}
-}
-
-func (s *Stepper) Debug(text string) {
-	if !Enabled {
-		return
-	}
-	t := time.Now()
-	Logger("%s: %s (at %s, %s since last step, %s since start)\n", s.Name, text, t.Format(time.RFC3339), t.Sub(s.LastStep).String(), t.Sub(s.Start).String())
-}
-
-func (s *Stepper) Step(description string) {
-	if !Enabled {
-		return
-	}
-	if s.Completion != (time.Time{}) {
-		Logger("%s: already completed all tasks.\n")
-		return
-	}
-	t := time.Now()
-	Logger("%s: completed %s at %s (%s)\n", s.Name, description, t.Format(time.RFC3339), t.Sub(s.LastStep).String())
-	s.LastStep = t
-}
-
-func (s *Stepper) Complete() {
-	if !Enabled {
-		return
-	}
-	if s.Completion != (time.Time{}) {
-		Logger("%s: already completed all tasks.\n")
-		return
-	}
-	t := time.Now()
-	Logger("%s: completed all tasks at %s (%s since last step; total time: %s)\n", s.Name, t.Format(time.RFC3339), t.Sub(s.LastStep).String(), t.Sub(s.Start).String())
-	s.Completion = t
-}

domains.go

@@ -1,112 +0,0 @@
-package main
-
-import (
-	"github.com/OrlovEvgeny/go-mcache"
-	"github.com/valyala/fasthttp"
-	"net"
-	"strings"
-	"time"
-)
-
-// DnsLookupCacheTimeout specifies the timeout for the DNS lookup cache.
-var DnsLookupCacheTimeout = 15*time.Minute
-// dnsLookupCache stores DNS lookups for custom domains
-var dnsLookupCache = mcache.New()
-
-// getTargetFromDNS searches for CNAME or TXT entries on the request domain ending with MainDomainSuffix.
-// If everything is fine, it returns the target data.
-func getTargetFromDNS(domain string) (targetOwner, targetRepo, targetBranch string) {
-	// Get CNAME or TXT
-	var cname string
-	var err error
-	if cachedName, ok := dnsLookupCache.Get(domain); ok {
-		cname = cachedName.(string)
-	} else {
-		cname, err = net.LookupCNAME(domain)
-		cname = strings.TrimSuffix(cname, ".")
-		if err != nil || !strings.HasSuffix(cname, string(MainDomainSuffix)) {
-			cname = ""
-			// TODO: check if the A record matches!
-			names, err := net.LookupTXT(domain)
-			if err == nil {
-				for _, name := range names {
-					name = strings.TrimSuffix(name, ".")
-					if strings.HasSuffix(name, string(MainDomainSuffix)) {
-						cname = name
-						break
-					}
-				}
-			}
-		}
-		_ = dnsLookupCache.Set(domain, cname, DnsLookupCacheTimeout)
-	}
-	if cname == "" {
-		return
-	}
-	cnameParts := strings.Split(strings.TrimSuffix(cname, string(MainDomainSuffix)), ".")
-	targetOwner = cnameParts[len(cnameParts)-1]
-	if len(cnameParts) > 1 {
-		targetRepo = cnameParts[len(cnameParts)-2]
-	}
-	if len(cnameParts) > 2 {
-		targetBranch = cnameParts[len(cnameParts)-3]
-	}
-	if targetRepo == "" {
-		targetRepo = "pages"
-	}
-	if targetBranch == "" && targetRepo != "pages" {
-		targetBranch = "pages"
-	}
-	// if targetBranch is still empty, the caller must find the default branch
-	return
-}
-
-
-// CanonicalDomainCacheTimeout specifies the timeout for the canonical domain cache.
-var CanonicalDomainCacheTimeout = 15*time.Minute
-// canonicalDomainCache stores canonical domains
-var canonicalDomainCache = mcache.New()
-
-// checkCanonicalDomain returns the canonical domain specified in the repo (using the file `.canonical-domain`).
-func checkCanonicalDomain(targetOwner, targetRepo, targetBranch, actualDomain string) (canonicalDomain string, valid bool) {
-	domains := []string{}
-	if cachedValue, ok := canonicalDomainCache.Get(targetOwner + "/" + targetRepo + "/" + targetBranch); ok {
-		domains = cachedValue.([]string)
-		for _, domain := range domains {
-			if domain == actualDomain {
-				valid = true
-				break
-			}
-		}
-	} else {
-		req := fasthttp.AcquireRequest()
-		req.SetRequestURI(string(GiteaRoot) + "/api/v1/repos/" + targetOwner + "/" + targetRepo + "/raw/" + targetBranch + "/.domains")
-		res := fasthttp.AcquireResponse()
-
-		err := upstreamClient.Do(req, res)
-		if err == nil && res.StatusCode() == fasthttp.StatusOK {
-			for _, domain := range strings.Split(string(res.Body()), "\n") {
-				domain = strings.ToLower(domain)
-				domain = strings.TrimSpace(domain)
-				domain = strings.TrimPrefix(domain, "http://")
-				domain = strings.TrimPrefix(domain, "https://")
-				if len(domain) > 0 && !strings.HasPrefix(domain, "#") && !strings.ContainsAny(domain, "\t /") && strings.ContainsRune(domain, '.') {
-					domains = append(domains, domain)
-				}
-				if domain == actualDomain {
-					valid = true
-				}
-			}
-		}
-		domains = append(domains, targetOwner + string(MainDomainSuffix))
-		if domains[len(domains) - 1] == actualDomain {
-			valid = true
-		}
-		if targetRepo != "" && targetRepo != "pages" {
-			domains[len(domains) - 1] += "/" + targetRepo
-		}
-		_ = canonicalDomainCache.Set(targetOwner + "/" + targetRepo + "/" + targetBranch, domains, CanonicalDomainCacheTimeout)
-	}
-	canonicalDomain = domains[0]
-	return
-}

go.mod

@@ -1,12 +1,135 @@
 module codeberg.org/codeberg/pages
 
-go 1.16
+go 1.20
 
 require (
+	code.gitea.io/sdk/gitea v0.15.1-0.20220729105105-cc14c63cccfa
 	github.com/OrlovEvgeny/go-mcache v0.0.0-20200121124330-1a8195b34f3a
 	github.com/akrylysov/pogreb v0.10.1
 	github.com/go-acme/lego/v4 v4.5.3
+	github.com/go-sql-driver/mysql v1.6.0
+	github.com/joho/godotenv v1.4.0
+	github.com/lib/pq v1.10.7
+	github.com/mattn/go-sqlite3 v1.14.16
 	github.com/reugn/equalizer v0.0.0-20210216135016-a959c509d7ad
-	github.com/valyala/fasthttp v1.31.0
+	github.com/rs/zerolog v1.27.0
-	github.com/valyala/fastjson v1.6.3
+	github.com/stretchr/testify v1.7.0
+	github.com/urfave/cli/v2 v2.3.0
+	xorm.io/xorm v1.3.2
+)
+
+require (
+	cloud.google.com/go v0.54.0 // indirect
+	github.com/Azure/azure-sdk-for-go v32.4.0+incompatible // indirect
+	github.com/Azure/go-autorest v14.2.0+incompatible // indirect
+	github.com/Azure/go-autorest/autorest v0.11.19 // indirect
+	github.com/Azure/go-autorest/autorest/adal v0.9.13 // indirect
+	github.com/Azure/go-autorest/autorest/azure/auth v0.5.8 // indirect
+	github.com/Azure/go-autorest/autorest/azure/cli v0.4.2 // indirect
+	github.com/Azure/go-autorest/autorest/date v0.3.0 // indirect
+	github.com/Azure/go-autorest/autorest/to v0.4.0 // indirect
+	github.com/Azure/go-autorest/autorest/validation v0.3.1 // indirect
+	github.com/Azure/go-autorest/logger v0.2.1 // indirect
+	github.com/Azure/go-autorest/tracing v0.6.0 // indirect
+	github.com/OpenDNS/vegadns2client v0.0.0-20180418235048-a3fa4a771d87 // indirect
+	github.com/akamai/AkamaiOPEN-edgegrid-golang v1.1.1 // indirect
+	github.com/aliyun/alibaba-cloud-sdk-go v1.61.1183 // indirect
+	github.com/aws/aws-sdk-go v1.39.0 // indirect
+	github.com/boombuler/barcode v1.0.1-0.20190219062509-6c824513bacc // indirect
+	github.com/cenkalti/backoff/v4 v4.1.1 // indirect
+	github.com/cloudflare/cloudflare-go v0.20.0 // indirect
+	github.com/cpu/goacmedns v0.1.1 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/davidmz/go-pageant v1.0.2 // indirect
+	github.com/deepmap/oapi-codegen v1.6.1 // indirect
+	github.com/dimchansky/utfbom v1.1.1 // indirect
+	github.com/dnsimple/dnsimple-go v0.70.1 // indirect
+	github.com/exoscale/egoscale v0.67.0 // indirect
+	github.com/fatih/structs v1.1.0 // indirect
+	github.com/form3tech-oss/jwt-go v3.2.2+incompatible // indirect
+	github.com/go-errors/errors v1.0.1 // indirect
+	github.com/go-fed/httpsig v1.1.0 // indirect
+	github.com/go-resty/resty/v2 v2.1.1-0.20191201195748-d7b97669fe48 // indirect
+	github.com/goccy/go-json v0.8.1 // indirect
+	github.com/gofrs/uuid v4.0.0+incompatible // indirect
+	github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
+	github.com/google/go-querystring v1.1.0 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/googleapis/gax-go/v2 v2.0.5 // indirect
+	github.com/gophercloud/gophercloud v0.16.0 // indirect
+	github.com/gophercloud/utils v0.0.0-20210216074907-f6de111f2eae // indirect
+	github.com/hashicorp/go-cleanhttp v0.5.1 // indirect
+	github.com/hashicorp/go-retryablehttp v0.7.0 // indirect
+	github.com/hashicorp/go-version v1.6.0 // indirect
+	github.com/iij/doapi v0.0.0-20190504054126-0bbf12d6d7df // indirect
+	github.com/infobloxopen/infoblox-go-client v1.1.1 // indirect
+	github.com/jarcoal/httpmock v1.0.6 // indirect
+	github.com/jmespath/go-jmespath v0.4.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/k0kubun/go-ansi v0.0.0-20180517002512-3bf9e2903213 // indirect
+	github.com/kolo/xmlrpc v0.0.0-20200310150728-e0350524596b // indirect
+	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
+	github.com/labbsr0x/bindman-dns-webhook v1.0.2 // indirect
+	github.com/labbsr0x/goh v1.0.1 // indirect
+	github.com/linode/linodego v0.31.1 // indirect
+	github.com/liquidweb/go-lwApi v0.0.5 // indirect
+	github.com/liquidweb/liquidweb-cli v0.6.9 // indirect
+	github.com/liquidweb/liquidweb-go v1.6.3 // indirect
+	github.com/mattn/go-colorable v0.1.12 // indirect
+	github.com/mattn/go-isatty v0.0.14 // indirect
+	github.com/miekg/dns v1.1.43 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
+	github.com/mitchellh/mapstructure v1.4.1 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/namedotcom/go v0.0.0-20180403034216-08470befbe04 // indirect
+	github.com/nrdcg/auroradns v1.0.1 // indirect
+	github.com/nrdcg/desec v0.6.0 // indirect
+	github.com/nrdcg/dnspod-go v0.4.0 // indirect
+	github.com/nrdcg/freemyip v0.2.0 // indirect
+	github.com/nrdcg/goinwx v0.8.1 // indirect
+	github.com/nrdcg/namesilo v0.2.1 // indirect
+	github.com/nrdcg/porkbun v0.1.1 // indirect
+	github.com/oracle/oci-go-sdk v24.3.0+incompatible // indirect
+	github.com/ovh/go-ovh v1.1.0 // indirect
+	github.com/patrickmn/go-cache v2.1.0+incompatible // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/pquerna/otp v1.3.0 // indirect
+	github.com/russross/blackfriday/v2 v2.0.1 // indirect
+	github.com/sacloud/libsacloud v1.36.2 // indirect
+	github.com/scaleway/scaleway-sdk-go v1.0.0-beta.7.0.20210127161313-bd30bebeac4f // indirect
+	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
+	github.com/sirupsen/logrus v1.4.2 // indirect
+	github.com/smartystreets/go-aws-auth v0.0.0-20180515143844-0c1422d1fdb9 // indirect
+	github.com/softlayer/softlayer-go v1.0.3 // indirect
+	github.com/softlayer/xmlrpc v0.0.0-20200409220501-5f089df7cb7e // indirect
+	github.com/spf13/cast v1.3.1 // indirect
+	github.com/stretchr/objx v0.3.0 // indirect
+	github.com/syndtr/goleveldb v1.0.0 // indirect
+	github.com/transip/gotransip/v6 v6.6.1 // indirect
+	github.com/vinyldns/go-vinyldns v0.0.0-20200917153823-148a5f6b8f14 // indirect
+	github.com/vultr/govultr/v2 v2.7.1 // indirect
+	go.opencensus.io v0.22.3 // indirect
+	go.uber.org/ratelimit v0.0.0-20180316092928-c15da0234277 // indirect
+	golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa // indirect
+	golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2 // indirect
+	golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d // indirect
+	golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10 // indirect
+	golang.org/x/text v0.3.6 // indirect
+	golang.org/x/time v0.0.0-20210611083556-38a9dc6acbc6 // indirect
+	google.golang.org/api v0.20.0 // indirect
+	google.golang.org/appengine v1.6.5 // indirect
+	google.golang.org/genproto v0.0.0-20200305110556-506484158171 // indirect
+	google.golang.org/grpc v1.27.1 // indirect
+	google.golang.org/protobuf v1.26.0 // indirect
+	gopkg.in/ini.v1 v1.62.0 // indirect
+	gopkg.in/ns1/ns1-go.v2 v2.6.2 // indirect
+	gopkg.in/square/go-jose.v2 v2.6.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+	xorm.io/builder v0.3.12 // indirect
 )

go.sum

@@ -22,7 +22,12 @@ cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIA
 cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
 cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
 cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
+code.gitea.io/sdk/gitea v0.15.1-0.20220729105105-cc14c63cccfa h1:OVwgYrY6vr6gWZvgnmevFhtL0GVA4HKaFOhD+joPoNk=
+code.gitea.io/sdk/gitea v0.15.1-0.20220729105105-cc14c63cccfa/go.mod h1:aRmrQC3CAHdJAU1LQt0C9zqzqI8tUB/5oQtNE746aYE=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
+gitea.com/xorm/sqlfiddle v0.0.0-20180821085327-62ce714f951a h1:lSA0F4e9A2NcQSqGqTOXqu2aRi/XEQxDCBwM8yJtE6s=
+gitea.com/xorm/sqlfiddle v0.0.0-20180821085327-62ce714f951a/go.mod h1:EXuID2Zs0pAQhH8yz+DNjUbjppKQzKFAn28TMYPB6IU=
+gitee.com/travelliu/dm v1.8.11192/go.mod h1:DHTzyhCrM843x9VdKVbZ+GKXGRbKM2sJ4LxihRxShkE=
 github.com/Azure/azure-sdk-for-go v32.4.0+incompatible h1:1JP8SKfroEakYiQU2ZyPDosh8w2Tg9UopKt88VyQPt4=
 github.com/Azure/azure-sdk-for-go v32.4.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
 github.com/Azure/go-autorest v14.2.0+incompatible h1:V5VMDjClD3GiElqLWO7mz2MxNAK/vTfRHdAubSIPRgs=
@@ -53,26 +58,38 @@ github.com/Azure/go-autorest/tracing v0.6.0 h1:TYi4+3m5t6K48TGI9AUdb+IzbnSxvnvUM
 github.com/Azure/go-autorest/tracing v0.6.0/go.mod h1:+vhtPC754Xsa23ID7GlGsrdKBpUA79WCAKPPZVC2DeU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
+github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/OpenDNS/vegadns2client v0.0.0-20180418235048-a3fa4a771d87 h1:xPMsUicZ3iosVPSIP7bW5EcGUzjiiMl1OYTe14y/R24=
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@@ -179,7 +238,10 @@ github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw
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@@ -188,6 +250,7 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
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@@ -202,8 +265,10 @@ github.com/google/pprof v0.0.0-20191218002539-d4f498aebedc/go.mod h1:ZgVRPoUq/hf
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@@ -214,16 +279,23 @@ github.com/gophercloud/utils v0.0.0-20210216074907-f6de111f2eae h1:Hi3IgB9RQDE15
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@@ -240,6 +312,10 @@ github.com/hashicorp/go-syslog v1.0.0/go.mod h1:qPfqrKkXGihmCqbJM2mZgkZGvKG1dFdv
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@@ -249,12 +325,61 @@ github.com/hashicorp/mdns v1.0.0/go.mod h1:tL+uN++7HEJ6SQLQ2/p+z2pH24WQKWjBPkE0m
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@@ -473,22 +684,22 @@ github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5
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@@ -499,7 +710,13 @@ github.com/xeipuuv/gojsonschema v1.2.0/go.mod h1:anYRn/JVcOK2ZgGU+IjEV4nwlhoK5sQ
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@@ -507,26 +724,42 @@ go.opencensus.io v0.22.3 h1:8sGtKOrtQqkN1bp2AtX+misvLIlOmsEsNd+9NIcPEm8=
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@@ -556,6 +789,7 @@ golang.org/x/mod v0.1.0/go.mod h1:0QHyrYULN0/3qlju5TqG8bIK38QM8yzMo5ekMj3DlcY=
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@@ -565,6 +799,7 @@ golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73r
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@@ -575,6 +810,7 @@ golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190628185345-da137c7871d7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190724013045-ca1201d0de80/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20190813141303-74dc4d7220e7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200114155413-6afb5195e5aa/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
@@ -589,8 +825,9 @@ golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210428140749-89ef3d95e781/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk=
 golang.org/x/net v0.0.0-20210510120150-4163338589ed/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20210614182718-04defd469f4e h1:XpT3nA5TvE525Ne3hInMh6+GETgn27Zfm9dxsThnX2Q=
 golang.org/x/net v0.0.0-20210614182718-04defd469f4e/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2 h1:CIJ76btIcR3eFI5EgSo6k1qKw9KJexJuRLI9G7Hp5wE=
+golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -614,9 +851,11 @@ golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20181026203630-95b1ffbd15a5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190403152447-81d4e9dc473e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -626,6 +865,7 @@ golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190726091711-fc99dfbffb4e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190801041406-cbf593c0f2f3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -633,6 +873,7 @@ golang.org/x/sys v0.0.0-20191008105621-543471e840be/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191220142924-d4481acd189f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200113162924-86b910548bc1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@@ -648,14 +889,20 @@ golang.org/x/sys v0.0.0-20200918174421-af09f7315aff/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201110211018-35f3e6cf4a65/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/sys v0.0.0-20210112080510-489259a85091/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -666,6 +913,7 @@ golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -674,6 +922,7 @@ golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba/go.mod h1:tRJNPiyCQ0inRvYxb
 golang.org/x/time v0.0.0-20210611083556-38a9dc6acbc6 h1:Vv0JUPWTyeqUq42B2WJ1FeIDjjvGKoA2Ss+Ts0lAVbs=
 golang.org/x/time v0.0.0-20210611083556-38a9dc6acbc6/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
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 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
@@ -682,14 +931,18 @@ golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3
 golang.org/x/tools v0.0.0-20190312170243-e65039ee4138/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
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@@ -698,6 +951,7 @@ golang.org/x/tools v0.0.0-20191125144606-a911d9008d1f/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191130070609-6e064ea0cf2d/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191216173652-a0e659d51361/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20191227053925-7b8e75db28f4/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.0.0-20200103221440-774c71fcf114/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
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 golang.org/x/tools v0.0.0-20200122220014-bf1340f18c4a/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
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@@ -707,12 +961,17 @@ golang.org/x/tools v0.0.0-20200212150539-ea181f53ac56/go.mod h1:TB2adYChydJhpapK
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@@ -725,6 +984,7 @@ google.golang.org/api v0.18.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/
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@@ -735,6 +995,7 @@ google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRn
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@@ -749,10 +1010,15 @@ google.golang.org/genproto v0.0.0-20200212174721-66ed5ce911ce/go.mod h1:55QSHmfG
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@@ -771,10 +1037,13 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8
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@@ -788,6 +1057,7 @@ gopkg.in/square/go-jose.v2 v2.6.0 h1:NGk74WTnPKBNUhNzQX7PYcTLUjoq7mzKk2OKbvwk2iI
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@@ -800,12 +1070,129 @@ gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
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handler.go

@@ -1,511 +0,0 @@
-package main
-
-import (
-	"bytes"
-	debug_stepper "codeberg.org/codeberg/pages/debug-stepper"
-	"fmt"
-	"github.com/OrlovEvgeny/go-mcache"
-	"github.com/valyala/fasthttp"
-	"github.com/valyala/fastjson"
-	"io"
-	"mime"
-	"path"
-	"strconv"
-	"strings"
-	"time"
-)
-
-// handler handles a single HTTP request to the web server.
-func handler(ctx *fasthttp.RequestCtx) {
-	s := debug_stepper.Start("handler")
-	defer s.Complete()
-
-	ctx.Response.Header.Set("Server", "Codeberg Pages")
-
-	// Force new default from specification (since November 2020) - see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy#strict-origin-when-cross-origin
-	ctx.Response.Header.Set("Referrer-Policy", "strict-origin-when-cross-origin")
-
-	// Enable caching, but require revalidation to reduce confusion
-	ctx.Response.Header.Set("Cache-Control", "must-revalidate")
-
-	trimmedHost := TrimHostPort(ctx.Request.Host())
-
-	// Add HSTS for RawDomain and MainDomainSuffix
-	if hsts := GetHSTSHeader(trimmedHost); hsts != "" {
-		ctx.Response.Header.Set("Strict-Transport-Security", hsts)
-	}
-
-	// Block all methods not required for static pages
-	if !ctx.IsGet() && !ctx.IsHead() && !ctx.IsOptions() {
-		ctx.Response.Header.Set("Allow", "GET, HEAD, OPTIONS")
-		ctx.Error("Method not allowed", fasthttp.StatusMethodNotAllowed)
-		return
-	}
-
-	// Block blacklisted paths (like ACME challenges)
-	for _, blacklistedPath := range BlacklistedPaths {
-		if bytes.HasPrefix(ctx.Path(), blacklistedPath) {
-			returnErrorPage(ctx, fasthttp.StatusForbidden)
-			return
-		}
-	}
-
-	// Allow CORS for specified domains
-	if ctx.IsOptions() {
-		allowCors := false
-		for _, allowedCorsDomain := range AllowedCorsDomains {
-			if bytes.Equal(trimmedHost, allowedCorsDomain) {
-				allowCors = true
-				break
-			}
-		}
-		if allowCors {
-			ctx.Response.Header.Set("Access-Control-Allow-Origin", "*")
-			ctx.Response.Header.Set("Access-Control-Allow-Methods", "GET, HEAD")
-		}
-		ctx.Response.Header.Set("Allow", "GET, HEAD, OPTIONS")
-		ctx.Response.Header.SetStatusCode(fasthttp.StatusNoContent)
-		return
-	}
-
-	// Prepare request information to Gitea
-	var targetOwner, targetRepo, targetBranch, targetPath string
-	var targetOptions = &upstreamOptions{
-		ForbiddenMimeTypes: map[string]struct{}{},
-		TryIndexPages:      true,
-	}
-
-	// tryBranch checks if a branch exists and populates the target variables. If canonicalLink is non-empty, it will
-	// also disallow search indexing and add a Link header to the canonical URL.
-	var tryBranch = func(repo string, branch string, path []string, canonicalLink string) bool {
-		if repo == "" {
-			return false
-		}
-
-		// Check if the branch exists, otherwise treat it as a file path
-		branchTimestampResult := getBranchTimestamp(targetOwner, repo, branch)
-		if branchTimestampResult == nil {
-			// branch doesn't exist
-			return false
-		}
-
-		// Branch exists, use it
-		targetRepo = repo
-		targetPath = strings.Trim(strings.Join(path, "/"), "/")
-		targetBranch = branchTimestampResult.branch
-
-		targetOptions.BranchTimestamp = branchTimestampResult.timestamp
-
-		if canonicalLink != "" {
-			// Hide from search machines & add canonical link
-			ctx.Response.Header.Set("X-Robots-Tag", "noarchive, noindex")
-			ctx.Response.Header.Set("Link",
-				strings.NewReplacer("%b", targetBranch, "%p", targetPath).Replace(canonicalLink)+
-					"; rel=\"canonical\"",
-			)
-		}
-
-		return true
-	}
-
-	// tryUpstream forwards the target request to the Gitea API, and shows an error page on failure.
-	var tryUpstream = func() {
-		// check if a canonical domain exists on a request on MainDomain
-		if bytes.HasSuffix(trimmedHost, MainDomainSuffix) {
-			canonicalDomain, _ := checkCanonicalDomain(targetOwner, targetRepo, targetBranch, "")
-			if !strings.HasSuffix(strings.SplitN(canonicalDomain, "/", 2)[0], string(MainDomainSuffix)) {
-				canonicalPath := string(ctx.RequestURI())
-				if targetRepo != "pages" {
-					canonicalPath = "/" + strings.SplitN(canonicalPath, "/", 3)[2]
-				}
-				ctx.Redirect("https://" + canonicalDomain + canonicalPath, fasthttp.StatusTemporaryRedirect)
-				return
-			}
-		}
-
-		// Try to request the file from the Gitea API
-		if !upstream(ctx, targetOwner, targetRepo, targetBranch, targetPath, targetOptions) {
-			returnErrorPage(ctx, ctx.Response.StatusCode())
-		}
-	}
-
-	s.Step("preparations")
-
-	if RawDomain != nil && bytes.Equal(trimmedHost, RawDomain) {
-		// Serve raw content from RawDomain
-		s.Debug("raw domain")
-
-		targetOptions.TryIndexPages = false
-		targetOptions.ForbiddenMimeTypes["text/html"] = struct{}{}
-		targetOptions.DefaultMimeType = "text/plain; charset=utf-8"
-
-		pathElements := strings.Split(string(bytes.Trim(ctx.Request.URI().Path(), "/")), "/")
-		if len(pathElements) < 2 {
-			// https://{RawDomain}/{owner}/{repo}[/@{branch}]/{path} is required
-			ctx.Redirect(RawInfoPage, fasthttp.StatusTemporaryRedirect)
-			return
-		}
-		targetOwner = pathElements[0]
-		targetRepo = pathElements[1]
-
-		// raw.codeberg.org/example/myrepo/@main/index.html
-		if len(pathElements) > 2 && strings.HasPrefix(pathElements[2], "@") {
-			s.Step("raw domain preparations, now trying with specified branch")
-			if tryBranch(targetRepo, pathElements[2][1:], pathElements[3:],
-				string(GiteaRoot)+"/"+targetOwner+"/"+targetRepo+"/src/branch/%b/%p",
-			) {
-				s.Step("tryBranch, now trying upstream")
-				tryUpstream()
-				return
-			}
-			s.Debug("missing branch")
-			returnErrorPage(ctx, fasthttp.StatusFailedDependency)
-			return
-		} else {
-			s.Step("raw domain preparations, now trying with default branch")
-			tryBranch(targetRepo, "", pathElements[2:],
-				string(GiteaRoot)+"/"+targetOwner+"/"+targetRepo+"/src/branch/%b/%p",
-			)
-			s.Step("tryBranch, now trying upstream")
-			tryUpstream()
-			return
-		}
-
-	} else if bytes.HasSuffix(trimmedHost, MainDomainSuffix) {
-		// Serve pages from subdomains of MainDomainSuffix
-		s.Debug("main domain suffix")
-
-		pathElements := strings.Split(string(bytes.Trim(ctx.Request.URI().Path(), "/")), "/")
-		targetOwner = string(bytes.TrimSuffix(trimmedHost, MainDomainSuffix))
-		targetRepo = pathElements[0]
-		targetPath = strings.Trim(strings.Join(pathElements[1:], "/"), "/")
-
-		// Check if the first directory is a repo with the second directory as a branch
-		// example.codeberg.page/myrepo/@main/index.html
-		if len(pathElements) > 1 && strings.HasPrefix(pathElements[1], "@") {
-			if targetRepo == "pages" {
-				// example.codeberg.org/pages/@... redirects to example.codeberg.org/@...
-				ctx.Redirect("/" + strings.Join(pathElements[1:], "/"), fasthttp.StatusTemporaryRedirect)
-				return
-			}
-
-			s.Step("main domain preparations, now trying with specified repo & branch")
-			if tryBranch(pathElements[0], pathElements[1][1:], pathElements[2:],
-				"/"+pathElements[0]+"/%p",
-			) {
-				s.Step("tryBranch, now trying upstream")
-				tryUpstream()
-			} else {
-				returnErrorPage(ctx, fasthttp.StatusFailedDependency)
-			}
-			return
-		}
-
-		// Check if the first directory is a branch for the "pages" repo
-		// example.codeberg.page/@main/index.html
-		if strings.HasPrefix(pathElements[0], "@") {
-			s.Step("main domain preparations, now trying with specified branch")
-			if tryBranch("pages", pathElements[0][1:], pathElements[1:], "/%p") {
-				s.Step("tryBranch, now trying upstream")
-				tryUpstream()
-			} else {
-				returnErrorPage(ctx, fasthttp.StatusFailedDependency)
-			}
-			return
-		}
-
-		// Check if the first directory is a repo with a "pages" branch
-		// example.codeberg.page/myrepo/index.html
-		// example.codeberg.page/pages/... is not allowed here.
-		s.Step("main domain preparations, now trying with specified repo")
-		if pathElements[0] != "pages" && tryBranch(pathElements[0], "pages", pathElements[1:], "") {
-			s.Step("tryBranch, now trying upstream")
-			tryUpstream()
-			return
-		}
-
-		// Try to use the "pages" repo on its default branch
-		// example.codeberg.page/index.html
-		s.Step("main domain preparations, now trying with default repo/branch")
-		if tryBranch("pages", "", pathElements, "") {
-			s.Step("tryBranch, now trying upstream")
-			tryUpstream()
-			return
-		}
-
-		// Couldn't find a valid repo/branch
-		returnErrorPage(ctx, fasthttp.StatusFailedDependency)
-		return
-	} else {
-		trimmedHostStr := string(trimmedHost)
-
-		// Serve pages from external domains
-		targetOwner, targetRepo, targetBranch = getTargetFromDNS(trimmedHostStr)
-		if targetOwner == "" {
-			ctx.Redirect(BrokenDNSPage, fasthttp.StatusTemporaryRedirect)
-			return
-		}
-
-		pathElements := strings.Split(string(bytes.Trim(ctx.Request.URI().Path(), "/")), "/")
-		canonicalLink := ""
-		if strings.HasPrefix(pathElements[0], "@") {
-			targetBranch = pathElements[0][1:]
-			pathElements = pathElements[1:]
-			canonicalLink = "/%p"
-		}
-
-		// Try to use the given repo on the given branch or the default branch
-		s.Step("custom domain preparations, now trying with details from DNS")
-		if tryBranch(targetRepo, targetBranch, pathElements, canonicalLink) {
-			canonicalDomain, valid := checkCanonicalDomain(targetOwner, targetRepo, targetBranch, trimmedHostStr)
-			if !valid {
-				returnErrorPage(ctx, fasthttp.StatusMisdirectedRequest)
-				return
-			} else if canonicalDomain != trimmedHostStr {
-				// only redirect if the target is also a codeberg page!
-				targetOwner, _, _ = getTargetFromDNS(strings.SplitN(canonicalDomain, "/", 2)[0])
-				if targetOwner != "" {
-					ctx.Redirect("https://"+canonicalDomain+string(ctx.RequestURI()), fasthttp.StatusTemporaryRedirect)
-					return
-				} else {
-					ctx.Redirect(BrokenDNSPage, fasthttp.StatusTemporaryRedirect)
-					return
-				}
-			}
-
-			s.Step("tryBranch, now trying upstream")
-			tryUpstream()
-			return
-		} else {
-			returnErrorPage(ctx, fasthttp.StatusFailedDependency)
-			return
-		}
-	}
-}
-
-// returnErrorPage sets the response status code and writes NotFoundPage to the response body, with "%status" replaced
-// with the provided status code.
-func returnErrorPage(ctx *fasthttp.RequestCtx, code int) {
-	ctx.Response.SetStatusCode(code)
-	ctx.Response.Header.SetContentType("text/html; charset=utf-8")
-	message := fasthttp.StatusMessage(code)
-	if code == fasthttp.StatusMisdirectedRequest {
-		message += " - domain not specified in <code>.domains</code> file"
-	}
-	if code == fasthttp.StatusFailedDependency {
-		message += " - owner, repo or branch doesn't exist"
-	}
-	ctx.Response.SetBody(bytes.ReplaceAll(NotFoundPage, []byte("%status"), []byte(strconv.Itoa(code)+" "+message)))
-}
-
-// BranchExistanceCacheTimeout specifies the timeout for the default branch cache. It can be quite long.
-var DefaultBranchCacheTimeout = 1*time.Hour
-// BranchExistanceCacheTimeout specifies the timeout for the branch timestamp & existance cache. It should be shorter
-// than FileCacheTimeout, as that gets invalidated if the branch timestamp has changed. That way, repo changes will be
-// picked up faster, while still allowing the content to be cached longer if nothing changes.
-var BranchExistanceCacheTimeout = 5*time.Minute
-// branchTimestampCache stores branch timestamps for faster cache checking
-var branchTimestampCache = mcache.New()
-type branchTimestamp struct {
-	branch string
-	timestamp time.Time
-}
-
-// FileCacheTimeout specifies the timeout for the file content cache - you might want to make this quite long, depending
-// on your available memory.
-var FileCacheTimeout = 5*time.Minute
-// FileCacheSizeLimit limits the maximum file size that will be cached, and is set to 1 MB by default.
-var FileCacheSizeLimit = 1024 * 1024
-// fileResponseCache stores responses from the Gitea server
-var fileResponseCache = mcache.New()
-type fileResponse struct {
-	exists bool
-	mimeType string
-	body []byte
-}
-
-// getBranchTimestamp finds the default branch (if branch is "") and returns the last modification time of the branch
-// (or nil if the branch doesn't exist)
-func getBranchTimestamp(owner, repo, branch string) *branchTimestamp {
-	if result, ok := branchTimestampCache.Get(owner + "/" + repo + "/" + branch); ok {
-		if result == nil {
-			return nil
-		}
-		return result.(*branchTimestamp)
-	}
-	result := &branchTimestamp{}
-	result.branch = branch
-	if branch == "" {
-		// Get default branch
-		var body = make([]byte, 0)
-		status, body, err := fasthttp.GetTimeout(body, string(GiteaRoot)+"/api/v1/repos/"+owner+"/"+repo, 5 * time.Second)
-		if err != nil || status != 200 {
-			_ = branchTimestampCache.Set(owner + "/" + repo + "/" + branch, nil, DefaultBranchCacheTimeout)
-			return nil
-		}
-		result.branch = fastjson.GetString(body, "default_branch")
-	}
-
-	var body = make([]byte, 0)
-	status, body, err := fasthttp.GetTimeout(body, string(GiteaRoot)+"/api/v1/repos/"+owner+"/"+repo+"/branches/"+branch, 5 * time.Second)
-	if err != nil || status != 200 {
-		return nil
-	}
-
-	result.timestamp, _ = time.Parse(time.RFC3339, fastjson.GetString(body, "commit", "timestamp"))
-	_ = branchTimestampCache.Set(owner + "/" + repo + "/" + branch, result, BranchExistanceCacheTimeout)
-	return result
-}
-
-var upstreamClient = fasthttp.Client{
-	ReadTimeout: 10 * time.Second,
-	MaxConnDuration: 60 * time.Second,
-	MaxConnWaitTimeout: 1000 * time.Millisecond,
-	MaxConnsPerHost: 128 * 16, // TODO: adjust bottlenecks for best performance with Gitea!
-}
-
-// upstream requests a file from the Gitea API at GiteaRoot and writes it to the request context.
-func upstream(ctx *fasthttp.RequestCtx, targetOwner string, targetRepo string, targetBranch string, targetPath string, options *upstreamOptions) (final bool) {
-	s := debug_stepper.Start("upstream")
-	defer s.Complete()
-
-	if options.ForbiddenMimeTypes == nil {
-		options.ForbiddenMimeTypes = map[string]struct{}{}
-	}
-
-	// Check if the branch exists and when it was modified
-	if options.BranchTimestamp == (time.Time{}) {
-		branch := getBranchTimestamp(targetOwner, targetRepo, targetBranch)
-
-		if branch == nil {
-			returnErrorPage(ctx, fasthttp.StatusFailedDependency)
-			return true
-		}
-		targetBranch = branch.branch
-		options.BranchTimestamp = branch.timestamp
-	}
-
-	if targetOwner == "" || targetRepo == "" || targetBranch == "" {
-		returnErrorPage(ctx, fasthttp.StatusBadRequest)
-		return true
-	}
-
-	// Check if the browser has a cached version
-	if ifModifiedSince, err := time.Parse(time.RFC1123, string(ctx.Request.Header.Peek("If-Modified-Since"))); err == nil {
-		if !ifModifiedSince.Before(options.BranchTimestamp) {
-			ctx.Response.SetStatusCode(fasthttp.StatusNotModified)
-			return true
-		}
-	}
-	s.Step("preparations")
-
-	// Make a GET request to the upstream URL
-	uri := targetOwner + "/" + targetRepo + "/raw/" + targetBranch + "/" + targetPath
-	var req *fasthttp.Request
-	var res *fasthttp.Response
-	var cachedResponse fileResponse
-	var err error
-	if cachedValue, ok := fileResponseCache.Get(uri + "?timestamp=" + strconv.FormatInt(options.BranchTimestamp.Unix(), 10)); ok {
-		cachedResponse = cachedValue.(fileResponse)
-	} else {
-		req = fasthttp.AcquireRequest()
-		req.SetRequestURI(string(GiteaRoot) + "/api/v1/repos/" + uri)
-		res = fasthttp.AcquireResponse()
-		res.SetBodyStream(&strings.Reader{}, -1)
-		err = upstreamClient.Do(req, res)
-	}
-	s.Step("acquisition")
-
-	// Handle errors
-	if (res == nil && !cachedResponse.exists) || (res != nil && res.StatusCode() == fasthttp.StatusNotFound) {
-		if options.TryIndexPages {
-			// copy the options struct & try if an index page exists
-			optionsForIndexPages := *options
-			optionsForIndexPages.TryIndexPages = false
-			optionsForIndexPages.AppendTrailingSlash = true
-			for _, indexPage := range IndexPages {
-				if upstream(ctx, targetOwner, targetRepo, targetBranch, strings.TrimSuffix(targetPath, "/")+"/"+indexPage, &optionsForIndexPages) {
-					_ = fileResponseCache.Set(uri + "?timestamp=" + strconv.FormatInt(options.BranchTimestamp.Unix(), 10), fileResponse{
-						exists: false,
-					}, FileCacheTimeout)
-					return true
-				}
-			}
-		}
-		ctx.Response.SetStatusCode(fasthttp.StatusNotFound)
-		if res != nil {
-			// Update cache if the request is fresh
-			_ = fileResponseCache.Set(uri + "?timestamp=" + strconv.FormatInt(options.BranchTimestamp.Unix(), 10), fileResponse{
-				exists: false,
-			}, FileCacheTimeout)
-		}
-		return false
-	}
-	if res != nil && (err != nil || res.StatusCode() != fasthttp.StatusOK) {
-		fmt.Printf("Couldn't fetch contents from \"%s\": %s (status code %d)\n", req.RequestURI(), err, res.StatusCode())
-		returnErrorPage(ctx, fasthttp.StatusInternalServerError)
-		return true
-	}
-
-	// Append trailing slash if missing (for index files)
-	// options.AppendTrailingSlash is only true when looking for index pages
-	if options.AppendTrailingSlash && !bytes.HasSuffix(ctx.Request.URI().Path(), []byte{'/'}) {
-		ctx.Redirect(string(ctx.Request.URI().Path())+"/", fasthttp.StatusTemporaryRedirect)
-		return true
-	}
-	s.Step("error handling")
-
-	// Set the MIME type
-	mimeType := mime.TypeByExtension(path.Ext(targetPath))
-	mimeTypeSplit := strings.SplitN(mimeType, ";", 2)
-	if _, ok := options.ForbiddenMimeTypes[mimeTypeSplit[0]]; ok || mimeType == "" {
-		if options.DefaultMimeType != "" {
-			mimeType = options.DefaultMimeType
-		} else {
-			mimeType = "application/octet-stream"
-		}
-	}
-	ctx.Response.Header.SetContentType(mimeType)
-
-	// Everything's okay so far
-	ctx.Response.SetStatusCode(fasthttp.StatusOK)
-	ctx.Response.Header.SetLastModified(options.BranchTimestamp)
-
-	s.Step("response preparations")
-
-	// Write the response body to the original request
-	var cacheBodyWriter bytes.Buffer
-	if res != nil {
-		if res.Header.ContentLength() > FileCacheSizeLimit {
-			err = res.BodyWriteTo(ctx.Response.BodyWriter())
-		} else {
-			err = res.BodyWriteTo(io.MultiWriter(ctx.Response.BodyWriter(), &cacheBodyWriter))
-		}
-	} else {
-		_, err = ctx.Write(cachedResponse.body)
-	}
-	if err != nil {
-		fmt.Printf("Couldn't write body for \"%s\": %s\n", req.RequestURI(), err)
-		returnErrorPage(ctx, fasthttp.StatusInternalServerError)
-		return true
-	}
-	s.Step("response")
-
-	if res != nil {
-		cachedResponse.exists = true
-		cachedResponse.mimeType = mimeType
-		cachedResponse.body = cacheBodyWriter.Bytes()
-		_ = fileResponseCache.Set(uri + "?timestamp=" + strconv.FormatInt(options.BranchTimestamp.Unix(), 10), cachedResponse, FileCacheTimeout)
-	}
-
-	return true
-}
-
-// upstreamOptions provides various options for the upstream request.
-type upstreamOptions struct {
-	DefaultMimeType     string
-	ForbiddenMimeTypes  map[string]struct{}
-	TryIndexPages       bool
-	AppendTrailingSlash bool
-	BranchTimestamp     time.Time
-}

handler_test.go

@@ -1,54 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"github.com/valyala/fasthttp"
-	"testing"
-	"time"
-)
-
-func TestHandlerPerformance(t *testing.T) {
-	ctx := &fasthttp.RequestCtx{
-		Request:  *fasthttp.AcquireRequest(),
-		Response: *fasthttp.AcquireResponse(),
-	}
-	ctx.Request.SetRequestURI("http://mondstern.codeberg.page/")
-	fmt.Printf("Start: %v\n", time.Now())
-	start := time.Now()
-	handler(ctx)
-	end := time.Now()
-	fmt.Printf("Done: %v\n", time.Now())
-	if ctx.Response.StatusCode() != 200 || len(ctx.Response.Body()) < 2048 {
-		t.Errorf("request failed with status code %d and body length %d", ctx.Response.StatusCode(), len(ctx.Response.Body()))
-	} else {
-		t.Logf("request took %d milliseconds", end.Sub(start).Milliseconds())
-	}
-
-	ctx.Response.Reset()
-	ctx.Response.ResetBody()
-	fmt.Printf("Start: %v\n", time.Now())
-	start = time.Now()
-	handler(ctx)
-	end = time.Now()
-	fmt.Printf("Done: %v\n", time.Now())
-	if ctx.Response.StatusCode() != 200 || len(ctx.Response.Body()) < 2048 {
-		t.Errorf("request failed with status code %d and body length %d", ctx.Response.StatusCode(), len(ctx.Response.Body()))
-	} else {
-		t.Logf("request took %d milliseconds", end.Sub(start).Milliseconds())
-	}
-
-
-	ctx.Response.Reset()
-	ctx.Response.ResetBody()
-	ctx.Request.SetRequestURI("http://example.momar.xyz/")
-	fmt.Printf("Start: %v\n", time.Now())
-	start = time.Now()
-	handler(ctx)
-	end = time.Now()
-	fmt.Printf("Done: %v\n", time.Now())
-	if ctx.Response.StatusCode() != 200 || len(ctx.Response.Body()) < 1 {
-		t.Errorf("request failed with status code %d and body length %d", ctx.Response.StatusCode(), len(ctx.Response.Body()))
-	} else {
-		t.Logf("request took %d milliseconds", end.Sub(start).Milliseconds())
-	}
-}

haproxy-sni/haproxy.cfg

@@ -51,6 +51,7 @@ frontend https_sni_frontend
   ###################################################
   acl use_http_backend req.ssl_sni -i "codeberg.org"
   acl use_http_backend req.ssl_sni -i "join.codeberg.org"
+  # TODO: use this if no SNI exists
   use_backend https_termination_backend if use_http_backend
 
   ############################

helpers.go

@@ -1,21 +0,0 @@
-package main
-
-import "bytes"
-
-// GetHSTSHeader returns a HSTS header with includeSubdomains & preload for MainDomainSuffix and RawDomain, or an empty
-// string for custom domains.
-func GetHSTSHeader(host []byte) string {
-	if bytes.HasSuffix(host, MainDomainSuffix) || bytes.Equal(host, RawDomain) {
-		return "max-age=63072000; includeSubdomains; preload"
-	} else {
-		return ""
-	}
-}
-
-func TrimHostPort(host []byte) []byte {
-	i := bytes.IndexByte(host, ':')
-	if i >= 0 {
-		return host[:i]
-	}
-	return host
-}

html/404.html

@@ -3,7 +3,7 @@
 <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width">
-    <title>%status</title>
+    <title>%status%</title>
 
     <link rel="stylesheet" href="https://design.codeberg.org/design-kit/codeberg.css" />
     <link href="https://fonts.codeberg.org/dist/inter/Inter%20Web/inter.css" rel="stylesheet" />
@@ -21,12 +21,13 @@
     </style>
 </head>
 <body>
-    <i class="fa fa-bug text-primary" style="font-size: 96px;"></i>
+    <i class="fa fa-search text-primary" style="font-size: 96px;"></i>
     <h1 class="mb-0 text-primary">
-    	You found a bug!
+        Page not found!
     </h1>
     <h5 class="text-center" style="max-width: 25em;">
-    	Sorry, this page doesn't exist or is inaccessible for other reasons (%status)
+        Sorry, but this page couldn't be found or is inaccessible (%status%).<br/>
+        We hope this isn't a problem on our end ;) - Make sure to check the <a href="https://docs.codeberg.org/codeberg-pages/troubleshooting/" target="_blank">troubleshooting section in the Docs</a>!
     </h5>
     <small class="text-muted">
         <img src="https://design.codeberg.org/logo-kit/icon.svg" class="align-top">

html/error.go

@@ -0,0 +1,50 @@
+package html
+
+import (
+	"html/template"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"codeberg.org/codeberg/pages/server/context"
+)
+
+// ReturnErrorPage sets the response status code and writes NotFoundPage to the response body,
+// with "%status%" and %message% replaced with the provided statusCode and msg
+func ReturnErrorPage(ctx *context.Context, msg string, statusCode int) {
+	ctx.RespWriter.Header().Set("Content-Type", "text/html; charset=utf-8")
+	ctx.RespWriter.WriteHeader(statusCode)
+
+	msg = generateResponse(msg, statusCode)
+
+	_, _ = ctx.RespWriter.Write([]byte(msg))
+}
+
+// TODO: use template engine
+func generateResponse(msg string, statusCode int) string {
+	if msg == "" {
+		msg = strings.ReplaceAll(NotFoundPage,
+			"%status%",
+			strconv.Itoa(statusCode)+" "+errorMessage(statusCode))
+	} else {
+		msg = strings.ReplaceAll(
+			strings.ReplaceAll(ErrorPage, "%message%", template.HTMLEscapeString(msg)),
+			"%status%",
+			http.StatusText(statusCode))
+	}
+
+	return msg
+}
+
+func errorMessage(statusCode int) string {
+	message := http.StatusText(statusCode)
+
+	switch statusCode {
+	case http.StatusMisdirectedRequest:
+		message += " - domain not specified in <code>.domains</code> file"
+	case http.StatusFailedDependency:
+		message += " - target repo/branch doesn't exist or is private"
+	}
+
+	return message
+}

html/error.html

@@ -0,0 +1,38 @@
+<!doctype html>
+<html class="codeberg-design">
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width">
+    <title>%status%</title>
+
+    <link rel="stylesheet" href="https://design.codeberg.org/design-kit/codeberg.css" />
+    <link href="https://fonts.codeberg.org/dist/inter/Inter%20Web/inter.css" rel="stylesheet" />
+    <link href="https://fonts.codeberg.org/dist/fontawesome5/css/all.min.css" rel="stylesheet" />
+
+    <style>
+        body {
+            margin: 0; padding: 1rem; box-sizing: border-box;
+            width: 100%; min-height: 100vh;
+            display: flex;
+            flex-direction: column;
+            align-items: center;
+            justify-content: center;
+        }
+    </style>
+</head>
+<body>
+    <i class="fa fa-search text-primary" style="font-size: 96px;"></i>
+    <h1 class="mb-0 text-primary">
+        %status%!
+    </h1>
+    <h5 class="text-center" style="max-width: 25em;">
+        Sorry, but this page couldn't be served.<br/>
+        We got an <b>"%message%"</b><br/>
+        We hope this isn't a problem on our end ;) - Make sure to check the <a href="https://docs.codeberg.org/codeberg-pages/troubleshooting/" target="_blank">troubleshooting section in the Docs</a>!
+    </h5>
+    <small class="text-muted">
+        <img src="https://design.codeberg.org/logo-kit/icon.svg" class="align-top">
+        Static pages made easy - <a href="https://codeberg.page">Codeberg Pages</a>
+    </small>
+</body>
+</html>

html/error_test.go

@@ -0,0 +1,38 @@
+package html
+
+import (
+	"net/http"
+	"strings"
+	"testing"
+)
+
+func TestValidMessage(t *testing.T) {
+	testString := "requested blacklisted path"
+	statusCode := http.StatusForbidden
+
+	expected := strings.ReplaceAll(
+		strings.ReplaceAll(ErrorPage, "%message%", testString),
+		"%status%",
+		http.StatusText(statusCode))
+	actual := generateResponse(testString, statusCode)
+
+	if expected != actual {
+		t.Errorf("generated response did not match: expected: '%s', got: '%s'", expected, actual)
+	}
+}
+
+func TestMessageWithHtml(t *testing.T) {
+	testString := `abc<img src=1 onerror=alert("xss");`
+	escapedString := "abc&lt;img src=1 onerror=alert(&#34;xss&#34;);"
+	statusCode := http.StatusNotFound
+
+	expected := strings.ReplaceAll(
+		strings.ReplaceAll(ErrorPage, "%message%", escapedString),
+		"%status%",
+		http.StatusText(statusCode))
+	actual := generateResponse(testString, statusCode)
+
+	if expected != actual {
+		t.Errorf("generated response did not match: expected: '%s', got: '%s'", expected, actual)
+	}
+}

html/html.go

@@ -0,0 +1,9 @@
+package html
+
+import _ "embed"
+
+//go:embed 404.html
+var NotFoundPage string
+
+//go:embed error.html
+var ErrorPage string

integration/get_test.go

@@ -0,0 +1,191 @@
+//go:build integration
+// +build integration
+
+package integration
+
+import (
+	"bytes"
+	"crypto/tls"
+	"io"
+	"log"
+	"net/http"
+	"net/http/cookiejar"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetRedirect(t *testing.T) {
+	log.Println("=== TestGetRedirect ===")
+	// test custom domain redirect
+	resp, err := getTestHTTPSClient().Get("https://calciumdibromid.localhost.mock.directory:4430")
+	if !assert.NoError(t, err) {
+		t.FailNow()
+	}
+	if !assert.EqualValues(t, http.StatusTemporaryRedirect, resp.StatusCode) {
+		t.FailNow()
+	}
+	assert.EqualValues(t, "https://www.cabr2.de/", resp.Header.Get("Location"))
+	assert.EqualValues(t, `<a href="https://www.cabr2.de/">Temporary Redirect</a>.`, strings.TrimSpace(string(getBytes(resp.Body))))
+}
+
+func TestGetContent(t *testing.T) {
+	log.Println("=== TestGetContent ===")
+	// test get image
+	resp, err := getTestHTTPSClient().Get("https://cb_pages_tests.localhost.mock.directory:4430/images/827679288a.jpg")
+	assert.NoError(t, err)
+	if !assert.EqualValues(t, http.StatusOK, resp.StatusCode) {
+		t.FailNow()
+	}
+	assert.EqualValues(t, "image/jpeg", resp.Header.Get("Content-Type"))
+	assert.EqualValues(t, "124635", resp.Header.Get("Content-Length"))
+	assert.EqualValues(t, 124635, getSize(resp.Body))
+	assert.Len(t, resp.Header.Get("ETag"), 42)
+
+	// specify branch
+	resp, err = getTestHTTPSClient().Get("https://cb_pages_tests.localhost.mock.directory:4430/pag/@master/")
+	assert.NoError(t, err)
+	if !assert.NotNil(t, resp) {
+		t.FailNow()
+	}
+	assert.EqualValues(t, http.StatusOK, resp.StatusCode)
+	assert.EqualValues(t, "text/html; charset=utf-8", resp.Header.Get("Content-Type"))
+	assert.True(t, getSize(resp.Body) > 1000)
+	assert.Len(t, resp.Header.Get("ETag"), 44)
+
+	// access branch name contains '/'
+	resp, err = getTestHTTPSClient().Get("https://cb_pages_tests.localhost.mock.directory:4430/blumia/@docs~main/")
+	assert.NoError(t, err)
+	if !assert.EqualValues(t, http.StatusOK, resp.StatusCode) {
+		t.FailNow()
+	}
+	assert.EqualValues(t, "text/html; charset=utf-8", resp.Header.Get("Content-Type"))
+	assert.True(t, getSize(resp.Body) > 100)
+	assert.Len(t, resp.Header.Get("ETag"), 44)
+
+	// TODO: test get of non cachable content (content size > fileCacheSizeLimit)
+}
+
+func TestCustomDomain(t *testing.T) {
+	log.Println("=== TestCustomDomain ===")
+	resp, err := getTestHTTPSClient().Get("https://mock-pages.codeberg-test.org:4430/README.md")
+	assert.NoError(t, err)
+	if !assert.NotNil(t, resp) {
+		t.FailNow()
+	}
+	assert.EqualValues(t, http.StatusOK, resp.StatusCode)
+	assert.EqualValues(t, "text/markdown; charset=utf-8", resp.Header.Get("Content-Type"))
+	assert.EqualValues(t, "106", resp.Header.Get("Content-Length"))
+	assert.EqualValues(t, 106, getSize(resp.Body))
+}
+
+func TestCustomDomainRedirects(t *testing.T) {
+	log.Println("=== TestCustomDomainRedirects ===")
+	// test redirect from default pages domain to custom domain
+	resp, err := getTestHTTPSClient().Get("https://6543.localhost.mock.directory:4430/test_pages-server_custom-mock-domain/@main/README.md")
+	assert.NoError(t, err)
+	if !assert.NotNil(t, resp) {
+		t.FailNow()
+	}
+	assert.EqualValues(t, http.StatusTemporaryRedirect, resp.StatusCode)
+	assert.EqualValues(t, "text/html; charset=utf-8", resp.Header.Get("Content-Type"))
+	// TODO: custom port is not evaluated (witch does hurt tests & dev env only)
+	// assert.EqualValues(t, "https://mock-pages.codeberg-test.org:4430/@main/README.md", resp.Header.Get("Location"))
+	assert.EqualValues(t, "https://mock-pages.codeberg-test.org/@main/README.md", resp.Header.Get("Location"))
+	assert.EqualValues(t, `https:/codeberg.org/6543/test_pages-server_custom-mock-domain/src/branch/main/README.md; rel="canonical"; rel="canonical"`, resp.Header.Get("Link"))
+
+	// test redirect from an custom domain to the primary custom domain (www.example.com -> example.com)
+	// regression test to https://codeberg.org/Codeberg/pages-server/issues/153
+	resp, err = getTestHTTPSClient().Get("https://mock-pages-redirect.codeberg-test.org:4430/README.md")
+	assert.NoError(t, err)
+	if !assert.NotNil(t, resp) {
+		t.FailNow()
+	}
+	assert.EqualValues(t, http.StatusTemporaryRedirect, resp.StatusCode)
+	assert.EqualValues(t, "text/html; charset=utf-8", resp.Header.Get("Content-Type"))
+	// TODO: custom port is not evaluated (witch does hurt tests & dev env only)
+	// assert.EqualValues(t, "https://mock-pages.codeberg-test.org:4430/README.md", resp.Header.Get("Location"))
+	assert.EqualValues(t, "https://mock-pages.codeberg-test.org/README.md", resp.Header.Get("Location"))
+}
+
+func TestGetNotFound(t *testing.T) {
+	log.Println("=== TestGetNotFound ===")
+	// test custom not found pages
+	resp, err := getTestHTTPSClient().Get("https://cb_pages_tests.localhost.mock.directory:4430/pages-404-demo/blah")
+	assert.NoError(t, err)
+	if !assert.NotNil(t, resp) {
+		t.FailNow()
+	}
+	assert.EqualValues(t, http.StatusNotFound, resp.StatusCode)
+	assert.EqualValues(t, "text/html; charset=utf-8", resp.Header.Get("Content-Type"))
+	assert.EqualValues(t, "37", resp.Header.Get("Content-Length"))
+	assert.EqualValues(t, 37, getSize(resp.Body))
+}
+
+func TestFollowSymlink(t *testing.T) {
+	log.Printf("=== TestFollowSymlink ===\n")
+
+	resp, err := getTestHTTPSClient().Get("https://cb_pages_tests.localhost.mock.directory:4430/tests_for_pages-server/@main/link")
+	assert.NoError(t, err)
+	if !assert.NotNil(t, resp) {
+		t.FailNow()
+	}
+	assert.EqualValues(t, http.StatusOK, resp.StatusCode)
+	assert.EqualValues(t, "application/octet-stream", resp.Header.Get("Content-Type"))
+	assert.EqualValues(t, "4", resp.Header.Get("Content-Length"))
+	body := getBytes(resp.Body)
+	assert.EqualValues(t, 4, len(body))
+	assert.EqualValues(t, "abc\n", string(body))
+}
+
+func TestLFSSupport(t *testing.T) {
+	log.Printf("=== TestLFSSupport ===\n")
+
+	resp, err := getTestHTTPSClient().Get("https://cb_pages_tests.localhost.mock.directory:4430/tests_for_pages-server/@main/lfs.txt")
+	assert.NoError(t, err)
+	if !assert.NotNil(t, resp) {
+		t.FailNow()
+	}
+	assert.EqualValues(t, http.StatusOK, resp.StatusCode)
+	body := strings.TrimSpace(string(getBytes(resp.Body)))
+	assert.EqualValues(t, 12, len(body))
+	assert.EqualValues(t, "actual value", body)
+}
+
+func TestGetOptions(t *testing.T) {
+	log.Println("=== TestGetOptions ===")
+	req, _ := http.NewRequest(http.MethodOptions, "https://mock-pages.codeberg-test.org:4430/README.md", http.NoBody)
+	resp, err := getTestHTTPSClient().Do(req)
+	assert.NoError(t, err)
+	if !assert.NotNil(t, resp) {
+		t.FailNow()
+	}
+	assert.EqualValues(t, http.StatusNoContent, resp.StatusCode)
+	assert.EqualValues(t, "GET, HEAD, OPTIONS", resp.Header.Get("Allow"))
+}
+
+func getTestHTTPSClient() *http.Client {
+	cookieJar, _ := cookiejar.New(nil)
+	return &http.Client{
+		Jar: cookieJar,
+		CheckRedirect: func(_ *http.Request, _ []*http.Request) error {
+			return http.ErrUseLastResponse
+		},
+		Transport: &http.Transport{
+			TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+		},
+	}
+}
+
+func getBytes(stream io.Reader) []byte {
+	buf := new(bytes.Buffer)
+	_, _ = buf.ReadFrom(stream)
+	return buf.Bytes()
+}
+
+func getSize(stream io.Reader) int {
+	buf := new(bytes.Buffer)
+	_, _ = buf.ReadFrom(stream)
+	return buf.Len()
+}

integration/main_test.go

@@ -0,0 +1,63 @@
+//go:build integration
+// +build integration
+
+package integration
+
+import (
+	"context"
+	"log"
+	"os"
+	"testing"
+	"time"
+
+	"codeberg.org/codeberg/pages/cmd"
+
+	"github.com/urfave/cli/v2"
+)
+
+func TestMain(m *testing.M) {
+	log.Println("=== TestMain: START Server ===")
+	serverCtx, serverCancel := context.WithCancel(context.Background())
+	if err := startServer(serverCtx); err != nil {
+		log.Fatalf("could not start server: %v", err)
+	}
+	defer func() {
+		serverCancel()
+		log.Println("=== TestMain: Server STOPED ===")
+	}()
+
+	time.Sleep(10 * time.Second)
+
+	m.Run()
+}
+
+func startServer(ctx context.Context) error {
+	args := []string{
+		"--verbose",
+		"--acme-accept-terms", "true",
+	}
+	setEnvIfNotSet("ACME_API", "https://acme.mock.directory")
+	setEnvIfNotSet("PAGES_DOMAIN", "localhost.mock.directory")
+	setEnvIfNotSet("RAW_DOMAIN", "raw.localhost.mock.directory")
+	setEnvIfNotSet("PORT", "4430")
+	setEnvIfNotSet("DB_TYPE", "sqlite3")
+
+	app := cli.NewApp()
+	app.Name = "pages-server"
+	app.Action = cmd.Serve
+	app.Flags = cmd.ServerFlags
+
+	go func() {
+		if err := app.RunContext(ctx, args); err != nil {
+			log.Fatalf("run server error: %v", err)
+		}
+	}()
+
+	return nil
+}
+
+func setEnvIfNotSet(key, value string) {
+	if _, set := os.LookupEnv(key); !set {
+		os.Setenv(key, value)
+	}
+}

main.go

@@ -1,141 +1,29 @@
-// Package main is the new Codeberg Pages server, a solution for serving static pages from Gitea repositories.
-//
-// Mapping custom domains is not static anymore, but can be done with DNS:
-//
-// 1) add a "domains.txt" text file to your repository, containing the allowed domains, separated by new lines. The
-// first line will be the canonical domain/URL; all other occurrences will be redirected to it.
-//
-// 2) add a CNAME entry to your domain, pointing to "[[{branch}.]{repo}.]{owner}.codeberg.page" (repo defaults to
-// "pages", "branch" defaults to the default branch if "repo" is "pages", or to "pages" if "repo" is something else):
-//      www.example.org. IN CNAME main.pages.example.codeberg.page.
-//
-// 3) if a CNAME is set for "www.example.org", you can redirect there from the naked domain by adding an ALIAS record
-// for "example.org" (if your provider allows ALIAS or similar records):
-//      example.org IN ALIAS codeberg.page.
-//
-// Certificates are generated, updated and cleaned up automatically via Let's Encrypt through a TLS challenge.
 package main
 
 import (
-	"bytes"
-	"crypto/tls"
 	"fmt"
-	"log"
-	"net"
-	"net/http"
 	"os"
-	"time"
 
-	_ "embed"
+	_ "github.com/joho/godotenv/autoload"
+	"github.com/urfave/cli/v2"
 
-	"github.com/valyala/fasthttp"
+	"codeberg.org/codeberg/pages/cmd"
+	"codeberg.org/codeberg/pages/server/version"
 )
 
-// MainDomainSuffix specifies the main domain (starting with a dot) for which subdomains shall be served as static
-// pages, or used for comparison in CNAME lookups. Static pages can be accessed through
-// https://{owner}.{MainDomain}[/{repo}], with repo defaulting to "pages".
-var MainDomainSuffix = []byte("." + envOr("PAGES_DOMAIN", "codeberg.page"))
-
-// GiteaRoot specifies the root URL of the Gitea instance, without a trailing slash.
-var GiteaRoot = []byte(envOr("GITEA_ROOT", "https://codeberg.org"))
-
-//go:embed 404.html
-var NotFoundPage []byte
-
-// BrokenDNSPage will be shown (with a redirect) when trying to access a domain for which no DNS CNAME record exists.
-var BrokenDNSPage = envOr("REDIRECT_BROKEN_DNS", "https://docs.codeberg.org/pages/custom-domains/")
-
-// RawDomain specifies the domain from which raw repository content shall be served in the following format:
-// https://{RawDomain}/{owner}/{repo}[/{branch|tag|commit}/{version}]/{filepath...}
-// (set to []byte(nil) to disable raw content hosting)
-var RawDomain = []byte(envOr("RAW_DOMAIN", "raw.codeberg.org"))
-
-// RawInfoPage will be shown (with a redirect) when trying to access RawDomain directly (or without owner/repo/path).
-var RawInfoPage = envOr("REDIRECT_RAW_INFO", "https://docs.codeberg.org/pages/raw-content/")
-
-// AllowedCorsDomains lists the domains for which Cross-Origin Resource Sharing is allowed.
-var AllowedCorsDomains = [][]byte{
-	RawDomain,
-	[]byte("fonts.codeberg.org"),
-	[]byte("design.codeberg.org"),
-}
-
-// BlacklistedPaths specifies forbidden path prefixes for all Codeberg Pages.
-var BlacklistedPaths = [][]byte{
-	[]byte("/.well-known/acme-challenge/"),
-}
-
-// IndexPages lists pages that may be considered as index pages for directories.
-var IndexPages = []string{
-	"index.html",
-}
-
-// main sets up and starts the web server.
 func main() {
-	// Make sure MainDomain has a trailing dot, and GiteaRoot has no trailing slash
+	app := cli.NewApp()
-	if !bytes.HasPrefix(MainDomainSuffix, []byte{'.'}) {
+	app.Name = "pages-server"
-		MainDomainSuffix = append([]byte{'.'}, MainDomainSuffix...)
+	app.Version = version.Version
-	}
+	app.Usage = "pages server"
-	GiteaRoot = bytes.TrimSuffix(GiteaRoot, []byte{'/'})
+	app.Action = cmd.Serve
-
+	app.Flags = cmd.ServerFlags
-	// Use HOST and PORT environment variables to determine listening address
+	app.Commands = []*cli.Command{
-	address := fmt.Sprintf("%s:%s", envOr("HOST", "[::]"), envOr("PORT", "443"))
+		cmd.Certs,
-	log.Printf("Listening on https://%s", address)
-
-	// Enable compression by wrapping the handler() method with the compression function provided by FastHTTP
-	compressedHandler := fasthttp.CompressHandlerBrotliLevel(handler, fasthttp.CompressBrotliBestSpeed, fasthttp.CompressBestSpeed)
-
-	server := &fasthttp.Server{
-		Handler:                      compressedHandler,
-		DisablePreParseMultipartForm: false,
-		MaxRequestBodySize:           0,
-		NoDefaultServerHeader:        true,
-		NoDefaultDate:                true,
-		ReadTimeout:                  30 * time.Second, // needs to be this high for ACME certificates with ZeroSSL & HTTP-01 challenge
-		Concurrency:                  1024 * 32, // TODO: adjust bottlenecks for best performance with Gitea!
-		MaxConnsPerIP:                100,
 	}
 
-	// Setup listener and TLS
+	if err := app.Run(os.Args); err != nil {
-	listener, err := net.Listen("tcp", address)
+		_, _ = fmt.Fprintln(os.Stderr, err)
-	if err != nil {
+		os.Exit(1)
-		log.Fatalf("Couldn't create listener: %s", err)
-	}
-	listener = tls.NewListener(listener, tlsConfig)
-
-	setupCertificates()
-	if os.Getenv("ENABLE_HTTP_SERVER") == "true" {
-		go (func() {
-			challengePath := []byte("/.well-known/acme-challenge/")
-			err := fasthttp.ListenAndServe("[::]:80", func(ctx *fasthttp.RequestCtx) {
-				if bytes.HasPrefix(ctx.Path(), challengePath) {
-					challenge, ok := challengeCache.Get(string(TrimHostPort(ctx.Host())) + "/" + string(bytes.TrimPrefix(ctx.Path(), challengePath)))
-					if !ok || challenge == nil {
-						ctx.SetStatusCode(http.StatusNotFound)
-						ctx.SetBodyString("no challenge for this token")
-					}
-					ctx.SetBodyString(challenge.(string))
-				} else {
-					ctx.Redirect("https://" + string(ctx.Host()) + string(ctx.RequestURI()), http.StatusMovedPermanently)
-				}
-			})
-			if err != nil {
-				log.Fatalf("Couldn't start HTTP server: %s", err)
-			}
-		})()
-	}
-
-	// Start the web server
-	err = server.Serve(listener)
-	if err != nil {
-		log.Fatalf("Couldn't start server: %s", err)
 	}
 }
-
-// envOr reads an environment variable and returns a default value if it's empty.
-func envOr(env string, or string) string {
-	if v := os.Getenv(env); v != "" {
-		return v
-	}
-	return or
-}

server/cache/interface.go

@@ -0,0 +1,9 @@
+package cache
+
+import "time"
+
+type SetGetKey interface {
+	Set(key string, value interface{}, ttl time.Duration) error
+	Get(key string) (interface{}, bool)
+	Remove(key string)
+}

server/cache/setup.go

@@ -0,0 +1,7 @@
+package cache
+
+import "github.com/OrlovEvgeny/go-mcache"
+
+func NewKeyValueCache() SetGetKey {
+	return mcache.New()
+}

server/certificates/acme_account.go

@@ -0,0 +1,29 @@
+package certificates
+
+import (
+	"crypto"
+
+	"github.com/go-acme/lego/v4/registration"
+)
+
+type AcmeAccount struct {
+	Email        string
+	Registration *registration.Resource
+	Key          crypto.PrivateKey `json:"-"`
+	KeyPEM       string            `json:"Key"`
+}
+
+// make sure AcmeAccount match User interface
+var _ registration.User = &AcmeAccount{}
+
+func (u *AcmeAccount) GetEmail() string {
+	return u.Email
+}
+
+func (u AcmeAccount) GetRegistration() *registration.Resource {
+	return u.Registration
+}
+
+func (u *AcmeAccount) GetPrivateKey() crypto.PrivateKey {
+	return u.Key
+}

server/certificates/certificates.go

@@ -0,0 +1,559 @@
+package certificates
+
+import (
+	"context"
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"crypto/rand"
+	"crypto/tls"
+	"crypto/x509"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-acme/lego/v4/certcrypto"
+	"github.com/go-acme/lego/v4/certificate"
+	"github.com/go-acme/lego/v4/challenge"
+	"github.com/go-acme/lego/v4/challenge/tlsalpn01"
+	"github.com/go-acme/lego/v4/lego"
+	"github.com/go-acme/lego/v4/providers/dns"
+	"github.com/go-acme/lego/v4/registration"
+	"github.com/reugn/equalizer"
+	"github.com/rs/zerolog/log"
+
+	"codeberg.org/codeberg/pages/server/cache"
+	"codeberg.org/codeberg/pages/server/database"
+	dnsutils "codeberg.org/codeberg/pages/server/dns"
+	"codeberg.org/codeberg/pages/server/gitea"
+	"codeberg.org/codeberg/pages/server/upstream"
+)
+
+// TLSConfig returns the configuration for generating, serving and cleaning up Let's Encrypt certificates.
+func TLSConfig(mainDomainSuffix string,
+	giteaClient *gitea.Client,
+	dnsProvider string,
+	acmeUseRateLimits bool,
+	keyCache, challengeCache, dnsLookupCache, canonicalDomainCache cache.SetGetKey,
+	certDB database.CertDB,
+) *tls.Config {
+	return &tls.Config{
+		// check DNS name & get certificate from Let's Encrypt
+		GetCertificate: func(info *tls.ClientHelloInfo) (*tls.Certificate, error) {
+			sni := strings.ToLower(strings.TrimSpace(info.ServerName))
+			if len(sni) < 1 {
+				return nil, errors.New("missing sni")
+			}
+
+			if info.SupportedProtos != nil {
+				for _, proto := range info.SupportedProtos {
+					if proto != tlsalpn01.ACMETLS1Protocol {
+						continue
+					}
+
+					challenge, ok := challengeCache.Get(sni)
+					if !ok {
+						return nil, errors.New("no challenge for this domain")
+					}
+					cert, err := tlsalpn01.ChallengeCert(sni, challenge.(string))
+					if err != nil {
+						return nil, err
+					}
+					return cert, nil
+				}
+			}
+
+			targetOwner := ""
+			mayObtainCert := true
+			if strings.HasSuffix(sni, mainDomainSuffix) || strings.EqualFold(sni, mainDomainSuffix[1:]) {
+				// deliver default certificate for the main domain (*.codeberg.page)
+				sni = mainDomainSuffix
+			} else {
+				var targetRepo, targetBranch string
+				targetOwner, targetRepo, targetBranch = dnsutils.GetTargetFromDNS(sni, mainDomainSuffix, dnsLookupCache)
+				if targetOwner == "" {
+					// DNS not set up, return main certificate to redirect to the docs
+					sni = mainDomainSuffix
+				} else {
+					targetOpt := &upstream.Options{
+						TargetOwner:  targetOwner,
+						TargetRepo:   targetRepo,
+						TargetBranch: targetBranch,
+					}
+					_, valid := targetOpt.CheckCanonicalDomain(giteaClient, sni, mainDomainSuffix, canonicalDomainCache)
+					if !valid {
+						// We shouldn't obtain a certificate when we cannot check if the
+						// repository has specified this domain in the `.domains` file.
+						mayObtainCert = false
+					}
+				}
+			}
+
+			if tlsCertificate, ok := keyCache.Get(sni); ok {
+				// we can use an existing certificate object
+				return tlsCertificate.(*tls.Certificate), nil
+			}
+
+			var tlsCertificate *tls.Certificate
+			var err error
+			if tlsCertificate, err = retrieveCertFromDB(sni, mainDomainSuffix, dnsProvider, acmeUseRateLimits, certDB); err != nil {
+				// request a new certificate
+				if strings.EqualFold(sni, mainDomainSuffix) {
+					return nil, errors.New("won't request certificate for main domain, something really bad has happened")
+				}
+
+				if !mayObtainCert {
+					return nil, fmt.Errorf("won't request certificate for %q", sni)
+				}
+
+				tlsCertificate, err = obtainCert(acmeClient, []string{sni}, nil, targetOwner, dnsProvider, mainDomainSuffix, acmeUseRateLimits, certDB)
+				if err != nil {
+					return nil, err
+				}
+			}
+
+			if err := keyCache.Set(sni, tlsCertificate, 15*time.Minute); err != nil {
+				return nil, err
+			}
+			return tlsCertificate, nil
+		},
+		NextProtos: []string{
+			"h2",
+			"http/1.1",
+			tlsalpn01.ACMETLS1Protocol,
+		},
+
+		// generated 2021-07-13, Mozilla Guideline v5.6, Go 1.14.4, intermediate configuration
+		// https://ssl-config.mozilla.org/#server=go&version=1.14.4&config=intermediate&guideline=5.6
+		MinVersion: tls.VersionTLS12,
+		CipherSuites: []uint16{
+			tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
+			tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
+			tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
+			tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
+			tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
+			tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
+		},
+	}
+}
+
+func checkUserLimit(user string) error {
+	userLimit, ok := acmeClientCertificateLimitPerUser[user]
+	if !ok {
+		// Each Codeberg user can only add 10 new domains per day.
+		userLimit = equalizer.NewTokenBucket(10, time.Hour*24)
+		acmeClientCertificateLimitPerUser[user] = userLimit
+	}
+	if !userLimit.Ask() {
+		return errors.New("rate limit exceeded: 10 certificates per user per 24 hours")
+	}
+	return nil
+}
+
+var (
+	acmeClient, mainDomainAcmeClient  *lego.Client
+	acmeClientCertificateLimitPerUser = map[string]*equalizer.TokenBucket{}
+)
+
+// rate limit is 300 / 3 hours, we want 200 / 2 hours but to refill more often, so that's 25 new domains every 15 minutes
+// TODO: when this is used a lot, we probably have to think of a somewhat better solution?
+var acmeClientOrderLimit = equalizer.NewTokenBucket(25, 15*time.Minute)
+
+// rate limit is 20 / second, we want 5 / second (especially as one cert takes at least two requests)
+var acmeClientRequestLimit = equalizer.NewTokenBucket(5, 1*time.Second)
+
+// rate limit is 5 / hour https://letsencrypt.org/docs/failed-validation-limit/
+var acmeClientFailLimit = equalizer.NewTokenBucket(5, 1*time.Hour)
+
+type AcmeTLSChallengeProvider struct {
+	challengeCache cache.SetGetKey
+}
+
+// make sure AcmeTLSChallengeProvider match Provider interface
+var _ challenge.Provider = AcmeTLSChallengeProvider{}
+
+func (a AcmeTLSChallengeProvider) Present(domain, _, keyAuth string) error {
+	return a.challengeCache.Set(domain, keyAuth, 1*time.Hour)
+}
+
+func (a AcmeTLSChallengeProvider) CleanUp(domain, _, _ string) error {
+	a.challengeCache.Remove(domain)
+	return nil
+}
+
+type AcmeHTTPChallengeProvider struct {
+	challengeCache cache.SetGetKey
+}
+
+// make sure AcmeHTTPChallengeProvider match Provider interface
+var _ challenge.Provider = AcmeHTTPChallengeProvider{}
+
+func (a AcmeHTTPChallengeProvider) Present(domain, token, keyAuth string) error {
+	return a.challengeCache.Set(domain+"/"+token, keyAuth, 1*time.Hour)
+}
+
+func (a AcmeHTTPChallengeProvider) CleanUp(domain, token, _ string) error {
+	a.challengeCache.Remove(domain + "/" + token)
+	return nil
+}
+
+func retrieveCertFromDB(sni, mainDomainSuffix, dnsProvider string, acmeUseRateLimits bool, certDB database.CertDB) (*tls.Certificate, error) {
+	// parse certificate from database
+	res, err := certDB.Get(sni)
+	if err != nil {
+		return nil, err
+	} else if res == nil {
+		return nil, database.ErrNotFound
+	}
+
+	tlsCertificate, err := tls.X509KeyPair(res.Certificate, res.PrivateKey)
+	if err != nil {
+		return nil, err
+	}
+
+	// TODO: document & put into own function
+	if !strings.EqualFold(sni, mainDomainSuffix) {
+		tlsCertificate.Leaf, err = x509.ParseCertificate(tlsCertificate.Certificate[0])
+		if err != nil {
+			return nil, fmt.Errorf("error parsin leaf tlsCert: %w", err)
+		}
+
+		// renew certificates 7 days before they expire
+		if tlsCertificate.Leaf.NotAfter.Before(time.Now().Add(7 * 24 * time.Hour)) {
+			// TODO: use ValidTill of custom cert struct
+			if res.CSR != nil && len(res.CSR) > 0 {
+				// CSR stores the time when the renewal shall be tried again
+				nextTryUnix, err := strconv.ParseInt(string(res.CSR), 10, 64)
+				if err == nil && time.Now().Before(time.Unix(nextTryUnix, 0)) {
+					return &tlsCertificate, nil
+				}
+			}
+			// TODO: make a queue ?
+			go (func() {
+				res.CSR = nil // acme client doesn't like CSR to be set
+				if _, err := obtainCert(acmeClient, []string{sni}, res, "", dnsProvider, mainDomainSuffix, acmeUseRateLimits, certDB); err != nil {
+					log.Error().Msgf("Couldn't renew certificate for %s: %v", sni, err)
+				}
+			})()
+		}
+	}
+
+	return &tlsCertificate, nil
+}
+
+var obtainLocks = sync.Map{}
+
+func obtainCert(acmeClient *lego.Client, domains []string, renew *certificate.Resource, user, dnsProvider, mainDomainSuffix string, acmeUseRateLimits bool, keyDatabase database.CertDB) (*tls.Certificate, error) {
+	name := strings.TrimPrefix(domains[0], "*")
+	if dnsProvider == "" && len(domains[0]) > 0 && domains[0][0] == '*' {
+		domains = domains[1:]
+	}
+
+	// lock to avoid simultaneous requests
+	_, working := obtainLocks.LoadOrStore(name, struct{}{})
+	if working {
+		for working {
+			time.Sleep(100 * time.Millisecond)
+			_, working = obtainLocks.Load(name)
+		}
+		cert, err := retrieveCertFromDB(name, mainDomainSuffix, dnsProvider, acmeUseRateLimits, keyDatabase)
+		if err != nil {
+			return nil, fmt.Errorf("certificate failed in synchronous request: %w", err)
+		}
+		return cert, nil
+	}
+	defer obtainLocks.Delete(name)
+
+	if acmeClient == nil {
+		return mockCert(domains[0], "ACME client uninitialized. This is a server error, please report!", mainDomainSuffix, keyDatabase)
+	}
+
+	// request actual cert
+	var res *certificate.Resource
+	var err error
+	if renew != nil && renew.CertURL != "" {
+		if acmeUseRateLimits {
+			acmeClientRequestLimit.Take()
+		}
+		log.Debug().Msgf("Renewing certificate for: %v", domains)
+		res, err = acmeClient.Certificate.Renew(*renew, true, false, "")
+		if err != nil {
+			log.Error().Err(err).Msgf("Couldn't renew certificate for %v, trying to request a new one", domains)
+			if acmeUseRateLimits {
+				acmeClientFailLimit.Take()
+			}
+			res = nil
+		}
+	}
+	if res == nil {
+		if user != "" {
+			if err := checkUserLimit(user); err != nil {
+				return nil, err
+			}
+		}
+
+		if acmeUseRateLimits {
+			acmeClientOrderLimit.Take()
+			acmeClientRequestLimit.Take()
+		}
+		log.Debug().Msgf("Re-requesting new certificate for %v", domains)
+		res, err = acmeClient.Certificate.Obtain(certificate.ObtainRequest{
+			Domains:    domains,
+			Bundle:     true,
+			MustStaple: false,
+		})
+		if acmeUseRateLimits && err != nil {
+			acmeClientFailLimit.Take()
+		}
+	}
+	if err != nil {
+		log.Error().Err(err).Msgf("Couldn't obtain again a certificate or %v", domains)
+		if renew != nil && renew.CertURL != "" {
+			tlsCertificate, err := tls.X509KeyPair(renew.Certificate, renew.PrivateKey)
+			if err != nil {
+				mockC, err2 := mockCert(domains[0], err.Error(), mainDomainSuffix, keyDatabase)
+				if err2 != nil {
+					return nil, errors.Join(err, err2)
+				}
+				return mockC, err
+			}
+			leaf, err := leaf(&tlsCertificate)
+			if err == nil && leaf.NotAfter.After(time.Now()) {
+				// avoid sending a mock cert instead of a still valid cert, instead abuse CSR field to store time to try again at
+				renew.CSR = []byte(strconv.FormatInt(time.Now().Add(6*time.Hour).Unix(), 10))
+				if err := keyDatabase.Put(name, renew); err != nil {
+					mockC, err2 := mockCert(domains[0], err.Error(), mainDomainSuffix, keyDatabase)
+					if err2 != nil {
+						return nil, errors.Join(err, err2)
+					}
+					return mockC, err
+				}
+				return &tlsCertificate, nil
+			}
+		}
+		return mockCert(domains[0], err.Error(), mainDomainSuffix, keyDatabase)
+	}
+	log.Debug().Msgf("Obtained certificate for %v", domains)
+
+	if err := keyDatabase.Put(name, res); err != nil {
+		return nil, err
+	}
+	tlsCertificate, err := tls.X509KeyPair(res.Certificate, res.PrivateKey)
+	if err != nil {
+		return nil, err
+	}
+	return &tlsCertificate, nil
+}
+
+func SetupAcmeConfig(acmeAPI, acmeMail, acmeEabHmac, acmeEabKID string, acmeAcceptTerms bool) (*lego.Config, error) {
+	// TODO: make it a config flag
+	const configFile = "acme-account.json"
+	var myAcmeAccount AcmeAccount
+	var myAcmeConfig *lego.Config
+
+	if account, err := os.ReadFile(configFile); err == nil {
+		if err := json.Unmarshal(account, &myAcmeAccount); err != nil {
+			return nil, err
+		}
+		myAcmeAccount.Key, err = certcrypto.ParsePEMPrivateKey([]byte(myAcmeAccount.KeyPEM))
+		if err != nil {
+			return nil, err
+		}
+		myAcmeConfig = lego.NewConfig(&myAcmeAccount)
+		myAcmeConfig.CADirURL = acmeAPI
+		myAcmeConfig.Certificate.KeyType = certcrypto.RSA2048
+
+		// Validate Config
+		_, err := lego.NewClient(myAcmeConfig)
+		if err != nil {
+			// TODO: should we fail hard instead?
+			log.Error().Err(err).Msg("Can't create ACME client, continuing with mock certs only")
+		}
+		return myAcmeConfig, nil
+	} else if !os.IsNotExist(err) {
+		return nil, err
+	}
+
+	privateKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+	if err != nil {
+		return nil, err
+	}
+	myAcmeAccount = AcmeAccount{
+		Email:  acmeMail,
+		Key:    privateKey,
+		KeyPEM: string(certcrypto.PEMEncode(privateKey)),
+	}
+	myAcmeConfig = lego.NewConfig(&myAcmeAccount)
+	myAcmeConfig.CADirURL = acmeAPI
+	myAcmeConfig.Certificate.KeyType = certcrypto.RSA2048
+	tempClient, err := lego.NewClient(myAcmeConfig)
+	if err != nil {
+		log.Error().Err(err).Msg("Can't create ACME client, continuing with mock certs only")
+	} else {
+		// accept terms & log in to EAB
+		if acmeEabKID == "" || acmeEabHmac == "" {
+			reg, err := tempClient.Registration.Register(registration.RegisterOptions{TermsOfServiceAgreed: acmeAcceptTerms})
+			if err != nil {
+				log.Error().Err(err).Msg("Can't register ACME account, continuing with mock certs only")
+			} else {
+				myAcmeAccount.Registration = reg
+			}
+		} else {
+			reg, err := tempClient.Registration.RegisterWithExternalAccountBinding(registration.RegisterEABOptions{
+				TermsOfServiceAgreed: acmeAcceptTerms,
+				Kid:                  acmeEabKID,
+				HmacEncoded:          acmeEabHmac,
+			})
+			if err != nil {
+				log.Error().Err(err).Msg("Can't register ACME account, continuing with mock certs only")
+			} else {
+				myAcmeAccount.Registration = reg
+			}
+		}
+
+		if myAcmeAccount.Registration != nil {
+			acmeAccountJSON, err := json.Marshal(myAcmeAccount)
+			if err != nil {
+				log.Error().Err(err).Msg("json.Marshalfailed, waiting for manual restart to avoid rate limits")
+				select {}
+			}
+			err = os.WriteFile(configFile, acmeAccountJSON, 0o600)
+			if err != nil {
+				log.Error().Err(err).Msg("os.WriteFile failed, waiting for manual restart to avoid rate limits")
+				select {}
+			}
+		}
+	}
+
+	return myAcmeConfig, nil
+}
+
+func SetupCertificates(mainDomainSuffix, dnsProvider string, acmeConfig *lego.Config, acmeUseRateLimits, enableHTTPServer bool, challengeCache cache.SetGetKey, certDB database.CertDB) error {
+	// getting main cert before ACME account so that we can fail here without hitting rate limits
+	mainCertBytes, err := certDB.Get(mainDomainSuffix)
+	if err != nil && !errors.Is(err, database.ErrNotFound) {
+		return fmt.Errorf("cert database is not working: %w", err)
+	}
+
+	acmeClient, err = lego.NewClient(acmeConfig)
+	if err != nil {
+		log.Fatal().Err(err).Msg("Can't create ACME client, continuing with mock certs only")
+	} else {
+		err = acmeClient.Challenge.SetTLSALPN01Provider(AcmeTLSChallengeProvider{challengeCache})
+		if err != nil {
+			log.Error().Err(err).Msg("Can't create TLS-ALPN-01 provider")
+		}
+		if enableHTTPServer {
+			err = acmeClient.Challenge.SetHTTP01Provider(AcmeHTTPChallengeProvider{challengeCache})
+			if err != nil {
+				log.Error().Err(err).Msg("Can't create HTTP-01 provider")
+			}
+		}
+	}
+
+	mainDomainAcmeClient, err = lego.NewClient(acmeConfig)
+	if err != nil {
+		log.Error().Err(err).Msg("Can't create ACME client, continuing with mock certs only")
+	} else {
+		if dnsProvider == "" {
+			// using mock server, don't use wildcard certs
+			err := mainDomainAcmeClient.Challenge.SetTLSALPN01Provider(AcmeTLSChallengeProvider{challengeCache})
+			if err != nil {
+				log.Error().Err(err).Msg("Can't create TLS-ALPN-01 provider")
+			}
+		} else {
+			provider, err := dns.NewDNSChallengeProviderByName(dnsProvider)
+			if err != nil {
+				log.Error().Err(err).Msg("Can't create DNS Challenge provider")
+			}
+			err = mainDomainAcmeClient.Challenge.SetDNS01Provider(provider)
+			if err != nil {
+				log.Error().Err(err).Msg("Can't create DNS-01 provider")
+			}
+		}
+	}
+
+	if mainCertBytes == nil {
+		_, err = obtainCert(mainDomainAcmeClient, []string{"*" + mainDomainSuffix, mainDomainSuffix[1:]}, nil, "", dnsProvider, mainDomainSuffix, acmeUseRateLimits, certDB)
+		if err != nil {
+			log.Error().Err(err).Msg("Couldn't renew main domain certificate, continuing with mock certs only")
+		}
+	}
+
+	return nil
+}
+
+func MaintainCertDB(ctx context.Context, interval time.Duration, mainDomainSuffix, dnsProvider string, acmeUseRateLimits bool, certDB database.CertDB) {
+	for {
+		// delete expired certs that will be invalid until next clean up
+		threshold := time.Now().Add(interval)
+		expiredCertCount := 0
+
+		certs, err := certDB.Items(0, 0)
+		if err != nil {
+			log.Error().Err(err).Msg("could not get certs from list")
+		} else {
+			for _, cert := range certs {
+				if !strings.EqualFold(cert.Domain, strings.TrimPrefix(mainDomainSuffix, ".")) {
+					if time.Unix(cert.ValidTill, 0).Before(threshold) {
+						err := certDB.Delete(cert.Domain)
+						if err != nil {
+							log.Error().Err(err).Msgf("Deleting expired certificate for %q failed", cert.Domain)
+						} else {
+							expiredCertCount++
+						}
+					}
+				}
+			}
+			log.Debug().Msgf("Removed %d expired certificates from the database", expiredCertCount)
+
+			// compact the database
+			msg, err := certDB.Compact()
+			if err != nil {
+				log.Error().Err(err).Msg("Compacting key database failed")
+			} else {
+				log.Debug().Msgf("Compacted key database: %s", msg)
+			}
+		}
+
+		// update main cert
+		res, err := certDB.Get(mainDomainSuffix)
+		if err != nil {
+			log.Error().Msgf("Couldn't get cert for domain %q", mainDomainSuffix)
+		} else if res == nil {
+			log.Error().Msgf("Couldn't renew certificate for main domain %q expected main domain cert to exist, but it's missing - seems like the database is corrupted", mainDomainSuffix)
+		} else {
+			tlsCertificates, err := certcrypto.ParsePEMBundle(res.Certificate)
+			if err != nil {
+				log.Error().Err(fmt.Errorf("could not parse cert for mainDomainSuffix: %w", err))
+			} else if tlsCertificates[0].NotAfter.Before(time.Now().Add(30 * 24 * time.Hour)) {
+				// renew main certificate 30 days before it expires
+				go (func() {
+					_, err = obtainCert(mainDomainAcmeClient, []string{"*" + mainDomainSuffix, mainDomainSuffix[1:]}, res, "", dnsProvider, mainDomainSuffix, acmeUseRateLimits, certDB)
+					if err != nil {
+						log.Error().Err(err).Msg("Couldn't renew certificate for main domain")
+					}
+				})()
+			}
+		}
+
+		select {
+		case <-ctx.Done():
+			return
+		case <-time.After(interval):
+		}
+	}
+}
+
+// leaf returns the parsed leaf certificate, either from c.leaf or by parsing
+// the corresponding c.Certificate[0].
+func leaf(c *tls.Certificate) (*x509.Certificate, error) {
+	if c.Leaf != nil {
+		return c.Leaf, nil
+	}
+	return x509.ParseCertificate(c.Certificate[0])
+}

server/certificates/mock.go

@@ -0,0 +1,87 @@
+package certificates
+
+import (
+	"bytes"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/tls"
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"encoding/pem"
+	"math/big"
+	"time"
+
+	"github.com/go-acme/lego/v4/certcrypto"
+	"github.com/go-acme/lego/v4/certificate"
+	"github.com/rs/zerolog/log"
+
+	"codeberg.org/codeberg/pages/server/database"
+)
+
+func mockCert(domain, msg, mainDomainSuffix string, keyDatabase database.CertDB) (*tls.Certificate, error) {
+	key, err := certcrypto.GeneratePrivateKey(certcrypto.RSA2048)
+	if err != nil {
+		return nil, err
+	}
+
+	template := x509.Certificate{
+		SerialNumber: big.NewInt(1),
+		Subject: pkix.Name{
+			CommonName:   domain,
+			Organization: []string{"Codeberg Pages Error Certificate (couldn't obtain ACME certificate)"},
+			OrganizationalUnit: []string{
+				"Will not try again for 6 hours to avoid hitting rate limits for your domain.",
+				"Check https://docs.codeberg.org/codeberg-pages/troubleshooting/ for troubleshooting tips, and feel " +
+					"free to create an issue at https://codeberg.org/Codeberg/pages-server if you can't solve it.\n",
+				"Error message: " + msg,
+			},
+		},
+
+		// certificates younger than 7 days are renewed, so this enforces the cert to not be renewed for a 6 hours
+		NotAfter:  time.Now().Add(time.Hour*24*7 + time.Hour*6),
+		NotBefore: time.Now(),
+
+		KeyUsage:              x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
+		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
+		BasicConstraintsValid: true,
+	}
+	certBytes, err := x509.CreateCertificate(
+		rand.Reader,
+		&template,
+		&template,
+		&key.(*rsa.PrivateKey).PublicKey,
+		key,
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	out := &bytes.Buffer{}
+	err = pem.Encode(out, &pem.Block{
+		Bytes: certBytes,
+		Type:  "CERTIFICATE",
+	})
+	if err != nil {
+		return nil, err
+	}
+	outBytes := out.Bytes()
+	res := &certificate.Resource{
+		PrivateKey:        certcrypto.PEMEncode(key),
+		Certificate:       outBytes,
+		IssuerCertificate: outBytes,
+		Domain:            domain,
+	}
+	databaseName := domain
+	if domain == "*"+mainDomainSuffix || domain == mainDomainSuffix[1:] {
+		databaseName = mainDomainSuffix
+	}
+	if err := keyDatabase.Put(databaseName, res); err != nil {
+		log.Error().Err(err)
+	}
+
+	tlsCertificate, err := tls.X509KeyPair(res.Certificate, res.PrivateKey)
+	if err != nil {
+		return nil, err
+	}
+	return &tlsCertificate, nil
+}

server/certificates/mock_test.go

@@ -0,0 +1,18 @@
+package certificates
+
+import (
+	"testing"
+
+	"codeberg.org/codeberg/pages/server/database"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestMockCert(t *testing.T) {
+	db, err := database.NewTmpDB()
+	assert.NoError(t, err)
+	cert, err := mockCert("example.com", "some error msg", "codeberg.page", db)
+	assert.NoError(t, err)
+	if assert.NotEmpty(t, cert) {
+		assert.NotEmpty(t, cert.Certificate)
+	}
+}

server/context/context.go

@@ -0,0 +1,62 @@
+package context
+
+import (
+	stdContext "context"
+	"net/http"
+
+	"codeberg.org/codeberg/pages/server/utils"
+)
+
+type Context struct {
+	RespWriter http.ResponseWriter
+	Req        *http.Request
+	StatusCode int
+}
+
+func New(w http.ResponseWriter, r *http.Request) *Context {
+	return &Context{
+		RespWriter: w,
+		Req:        r,
+		StatusCode: http.StatusOK,
+	}
+}
+
+func (c *Context) Context() stdContext.Context {
+	if c.Req != nil {
+		return c.Req.Context()
+	}
+	return stdContext.Background()
+}
+
+func (c *Context) Response() *http.Response {
+	if c.Req != nil && c.Req.Response != nil {
+		return c.Req.Response
+	}
+	return nil
+}
+
+func (c *Context) String(raw string, status ...int) {
+	code := http.StatusOK
+	if len(status) != 0 {
+		code = status[0]
+	}
+	c.RespWriter.WriteHeader(code)
+	_, _ = c.RespWriter.Write([]byte(raw))
+}
+
+func (c *Context) Redirect(uri string, statusCode int) {
+	http.Redirect(c.RespWriter, c.Req, uri, statusCode)
+}
+
+// Path returns the cleaned requested path.
+func (c *Context) Path() string {
+	return utils.CleanPath(c.Req.URL.Path)
+}
+
+func (c *Context) Host() string {
+	return c.Req.URL.Host
+}
+
+func (c *Context) TrimHostPort() string {
+	return utils.TrimHostPort(c.Req.Host)
+}

server/database/interface.go

@@ -0,0 +1,77 @@
+package database
+
+import (
+	"fmt"
+
+	"github.com/go-acme/lego/v4/certcrypto"
+	"github.com/go-acme/lego/v4/certificate"
+	"github.com/rs/zerolog/log"
+)
+
+type CertDB interface {
+	Close() error
+	Put(name string, cert *certificate.Resource) error
+	Get(name string) (*certificate.Resource, error)
+	Delete(key string) error
+	Items(page, pageSize int) ([]*Cert, error)
+	// Compact deprecated // TODO: remove in next version
+	Compact() (string, error)
+}
+
+type Cert struct {
+	Domain    string `xorm:"pk      NOT NULL UNIQUE    'domain'"`
+	Created   int64  `xorm:"created NOT NULL DEFAULT 0 'created'"`
+	Updated   int64  `xorm:"updated NOT NULL DEFAULT 0 'updated'"`
+	ValidTill int64  `xorm:"        NOT NULL DEFAULT 0 'valid_till'"`
+	// certificate.Resource
+	CertURL           string `xorm:"'cert_url'"`
+	CertStableURL     string `xorm:"'cert_stable_url'"`
+	PrivateKey        []byte `xorm:"'private_key'"`
+	Certificate       []byte `xorm:"'certificate'"`
+	IssuerCertificate []byte `xorm:"'issuer_certificate'"`
+}
+
+func (c Cert) Raw() *certificate.Resource {
+	return &certificate.Resource{
+		Domain:            c.Domain,
+		CertURL:           c.CertURL,
+		CertStableURL:     c.CertStableURL,
+		PrivateKey:        c.PrivateKey,
+		Certificate:       c.Certificate,
+		IssuerCertificate: c.IssuerCertificate,
+	}
+}
+
+func toCert(name string, c *certificate.Resource) (*Cert, error) {
+	tlsCertificates, err := certcrypto.ParsePEMBundle(c.Certificate)
+	if err != nil {
+		return nil, err
+	}
+	if len(tlsCertificates) == 0 || tlsCertificates[0] == nil {
+		err := fmt.Errorf("parsed cert resource has no cert")
+		log.Error().Err(err).Str("domain", c.Domain).Msgf("cert: %v", c)
+		return nil, err
+	}
+	validTill := tlsCertificates[0].NotAfter.Unix()
+
+	// handle wildcard certs
+	if name[:1] == "." {
+		name = "*" + name
+	}
+	if name != c.Domain {
+		err := fmt.Errorf("domain key '%s' and cert domain '%s' not equal", name, c.Domain)
+		log.Error().Err(err).Msg("toCert conversion did discover mismatch")
+		// TODO: fail hard: return nil, err
+	}
+
+	return &Cert{
+		Domain:    c.Domain,
+		ValidTill: validTill,
+
+		CertURL:           c.CertURL,
+		CertStableURL:     c.CertStableURL,
+		PrivateKey:        c.PrivateKey,
+		Certificate:       c.Certificate,
+		IssuerCertificate: c.IssuerCertificate,
+	}, nil
+}

server/database/mock.go

@@ -0,0 +1,54 @@
+package database
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/OrlovEvgeny/go-mcache"
+	"github.com/go-acme/lego/v4/certificate"
+)
+
+var _ CertDB = tmpDB{}
+
+type tmpDB struct {
+	intern *mcache.CacheDriver
+	ttl    time.Duration
+}
+
+func (p tmpDB) Close() error {
+	_ = p.intern.Close()
+	return nil
+}
+
+func (p tmpDB) Put(name string, cert *certificate.Resource) error {
+	return p.intern.Set(name, cert, p.ttl)
+}
+
+func (p tmpDB) Get(name string) (*certificate.Resource, error) {
+	cert, has := p.intern.Get(name)
+	if !has {
+		return nil, fmt.Errorf("cert for %q not found", name)
+	}
+	return cert.(*certificate.Resource), nil
+}
+
+func (p tmpDB) Delete(key string) error {
+	p.intern.Remove(key)
+	return nil
+}
+
+func (p tmpDB) Compact() (string, error) {
+	p.intern.Truncate()
+	return "Truncate done", nil
+}
+
+func (p tmpDB) Items(page, pageSize int) ([]*Cert, error) {
+	return nil, fmt.Errorf("items not implemented for tmpDB")
+}
+
+func NewTmpDB() (CertDB, error) {
+	return &tmpDB{
+		intern: mcache.New(),
+		ttl:    time.Minute,
+	}, nil
+}

server/database/pogreb.go

@@ -0,0 +1,134 @@
+package database
+
+import (
+	"bytes"
+	"context"
+	"encoding/gob"
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/akrylysov/pogreb"
+	"github.com/akrylysov/pogreb/fs"
+	"github.com/go-acme/lego/v4/certificate"
+	"github.com/rs/zerolog/log"
+)
+
+var _ CertDB = aDB{}
+
+type aDB struct {
+	ctx          context.Context
+	cancel       context.CancelFunc
+	intern       *pogreb.DB
+	syncInterval time.Duration
+}
+
+func (p aDB) Close() error {
+	p.cancel()
+	return p.intern.Sync()
+}
+
+func (p aDB) Put(name string, cert *certificate.Resource) error {
+	var resGob bytes.Buffer
+	if err := gob.NewEncoder(&resGob).Encode(cert); err != nil {
+		return err
+	}
+	return p.intern.Put([]byte(name), resGob.Bytes())
+}
+
+func (p aDB) Get(name string) (*certificate.Resource, error) {
+	cert := &certificate.Resource{}
+	resBytes, err := p.intern.Get([]byte(name))
+	if err != nil {
+		return nil, err
+	}
+	if resBytes == nil {
+		return nil, nil
+	}
+	if err := gob.NewDecoder(bytes.NewBuffer(resBytes)).Decode(cert); err != nil {
+		return nil, err
+	}
+	return cert, nil
+}
+
+func (p aDB) Delete(key string) error {
+	return p.intern.Delete([]byte(key))
+}
+
+func (p aDB) Compact() (string, error) {
+	result, err := p.intern.Compact()
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprintf("%+v", result), nil
+}
+
+func (p aDB) Items(_, _ int) ([]*Cert, error) {
+	items := make([]*Cert, 0, p.intern.Count())
+	iterator := p.intern.Items()
+	for {
+		key, resBytes, err := iterator.Next()
+		if err != nil {
+			if errors.Is(err, pogreb.ErrIterationDone) {
+				break
+			}
+			return nil, err
+		}
+
+		res := &certificate.Resource{}
+		if err := gob.NewDecoder(bytes.NewBuffer(resBytes)).Decode(res); err != nil {
+			return nil, err
+		}
+
+		cert, err := toCert(string(key), res)
+		if err != nil {
+			return nil, err
+		}
+
+		items = append(items, cert)
+	}
+
+	return items, nil
+}
+
+var _ CertDB = &aDB{}
+
+func (p aDB) sync() {
+	for {
+		err := p.intern.Sync()
+		if err != nil {
+			log.Error().Err(err).Msg("Syncing cert database failed")
+		}
+		select {
+		case <-p.ctx.Done():
+			return
+		case <-time.After(p.syncInterval):
+		}
+	}
+}
+
+func NewPogreb(path string) (CertDB, error) {
+	if path == "" {
+		return nil, fmt.Errorf("path not set")
+	}
+	db, err := pogreb.Open(path, &pogreb.Options{
+		BackgroundSyncInterval:       30 * time.Second,
+		BackgroundCompactionInterval: 6 * time.Hour,
+		FileSystem:                   fs.OSMMap,
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	result := &aDB{
+		ctx:          ctx,
+		cancel:       cancel,
+		intern:       db,
+		syncInterval: 5 * time.Minute,
+	}
+
+	go result.sync()
+
+	return result, nil
+}

server/database/xorm.go

@@ -0,0 +1,156 @@
+package database
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/rs/zerolog/log"
+
+	"github.com/go-acme/lego/v4/certificate"
+	"xorm.io/xorm"
+
+	// register sql driver
+	_ "github.com/go-sql-driver/mysql"
+	_ "github.com/lib/pq"
+	_ "github.com/mattn/go-sqlite3"
+)
+
+var _ CertDB = xDB{}
+
+var ErrNotFound = errors.New("entry not found")
+
+type xDB struct {
+	engine *xorm.Engine
+}
+
+func NewXormDB(dbType, dbConn string) (CertDB, error) {
+	if !supportedDriver(dbType) {
+		return nil, fmt.Errorf("not supported db type '%s'", dbType)
+	}
+	if dbConn == "" {
+		return nil, fmt.Errorf("no db connection provided")
+	}
+
+	e, err := xorm.NewEngine(dbType, dbConn)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := e.Sync2(new(Cert)); err != nil {
+		return nil, fmt.Errorf("cound not sync db model :%w", err)
+	}
+
+	return &xDB{
+		engine: e,
+	}, nil
+}
+
+func (x xDB) Close() error {
+	return x.engine.Close()
+}
+
+func (x xDB) Put(domain string, cert *certificate.Resource) error {
+	log.Trace().Str("domain", cert.Domain).Msg("inserting cert to db")
+
+	domain = integrationTestReplacements(domain)
+	c, err := toCert(domain, cert)
+	if err != nil {
+		return err
+	}
+
+	sess := x.engine.NewSession()
+	if err := sess.Begin(); err != nil {
+		return err
+	}
+	defer sess.Close()
+
+	if exist, _ := sess.ID(c.Domain).Exist(new(Cert)); exist {
+		if _, err := sess.ID(c.Domain).Update(c); err != nil {
+			return err
+		}
+	} else {
+		if _, err = sess.Insert(c); err != nil {
+			return err
+		}
+	}
+
+	return sess.Commit()
+}
+
+func (x xDB) Get(domain string) (*certificate.Resource, error) {
+	// handle wildcard certs
+	if domain[:1] == "." {
+		domain = "*" + domain
+	}
+	domain = integrationTestReplacements(domain)
+
+	cert := new(Cert)
+	log.Trace().Str("domain", domain).Msg("get cert from db")
+	if found, err := x.engine.ID(domain).Get(cert); err != nil {
+		return nil, err
+	} else if !found {
+		return nil, fmt.Errorf("%w: name='%s'", ErrNotFound, domain)
+	}
+	return cert.Raw(), nil
+}
+
+func (x xDB) Delete(domain string) error {
+	// handle wildcard certs
+	if domain[:1] == "." {
+		domain = "*" + domain
+	}
+	domain = integrationTestReplacements(domain)
+
+	log.Trace().Str("domain", domain).Msg("delete cert from db")
+	_, err := x.engine.ID(domain).Delete(new(Cert))
+	return err
+}
+
+func (x xDB) Compact() (string, error) {
+	// not needed
+	return "", nil
+}
+
+// Items return al certs from db, if pageSize is 0 it does not use limit
+func (x xDB) Items(page, pageSize int) ([]*Cert, error) {
+	// paginated return
+	if pageSize > 0 {
+		certs := make([]*Cert, 0, pageSize)
+		if page >= 0 {
+			page = 1
+		}
+		err := x.engine.Limit(pageSize, (page-1)*pageSize).Find(&certs)
+		return certs, err
+	}
+
+	// return all
+	certs := make([]*Cert, 0, 64)
+	err := x.engine.Find(&certs)
+	return certs, err
+}
+
+// Supported database drivers
+const (
+	DriverSqlite   = "sqlite3"
+	DriverMysql    = "mysql"
+	DriverPostgres = "postgres"
+)
+
+func supportedDriver(driver string) bool {
+	switch driver {
+	case DriverMysql, DriverPostgres, DriverSqlite:
+		return true
+	default:
+		return false
+	}
+}
+
+// integrationTestReplacements is needed because integration tests use a single domain cert,
+// while production use a wildcard cert
+// TODO: find a better way to handle this
+func integrationTestReplacements(domainKey string) string {
+	if domainKey == "*.localhost.mock.directory" {
+		return "localhost.mock.directory"
+	}
+	return domainKey
+}

server/database/xorm_test.go

@@ -0,0 +1,92 @@
+package database
+
+import (
+	"errors"
+	"testing"
+
+	"github.com/go-acme/lego/v4/certificate"
+	"github.com/stretchr/testify/assert"
+	"xorm.io/xorm"
+)
+
+func newTestDB(t *testing.T) *xDB {
+	e, err := xorm.NewEngine("sqlite3", ":memory:")
+	assert.NoError(t, err)
+	assert.NoError(t, e.Sync2(new(Cert)))
+	return &xDB{engine: e}
+}
+
+func TestSanitizeWildcardCerts(t *testing.T) {
+	certDB := newTestDB(t)
+
+	_, err := certDB.Get(".not.found")
+	assert.True(t, errors.Is(err, ErrNotFound))
+
+	// TODO: cert key and domain mismatch are don not fail hard jet
+	// https://codeberg.org/Codeberg/pages-server/src/commit/d8595cee882e53d7f44f1ddc4ef8a1f7b8f31d8d/server/database/interface.go#L64
+	//
+	// assert.Error(t, certDB.Put(".wildcard.de", &certificate.Resource{
+	// 	Domain:      "*.localhost.mock.directory",
+	// 	Certificate: localhost_mock_directory_certificate,
+	// }))
+
+	// insert new wildcard cert
+	assert.NoError(t, certDB.Put(".wildcard.de", &certificate.Resource{
+		Domain:      "*.wildcard.de",
+		Certificate: localhost_mock_directory_certificate,
+	}))
+
+	// update existing cert
+	assert.NoError(t, certDB.Put(".wildcard.de", &certificate.Resource{
+		Domain:      "*.wildcard.de",
+		Certificate: localhost_mock_directory_certificate,
+	}))
+
+	c1, err := certDB.Get(".wildcard.de")
+	assert.NoError(t, err)
+	c2, err := certDB.Get("*.wildcard.de")
+	assert.NoError(t, err)
+	assert.EqualValues(t, c1, c2)
+}
+
+var localhost_mock_directory_certificate = []byte(`-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----`)

server/dns/dns.go

@@ -0,0 +1,60 @@
+package dns
+
+import (
+	"net"
+	"strings"
+	"time"
+
+	"codeberg.org/codeberg/pages/server/cache"
+)
+
+// lookupCacheTimeout specifies the timeout for the DNS lookup cache.
+var lookupCacheTimeout = 15 * time.Minute
+
+// GetTargetFromDNS searches for CNAME or TXT entries on the request domain ending with MainDomainSuffix.
+// If everything is fine, it returns the target data.
+func GetTargetFromDNS(domain, mainDomainSuffix string, dnsLookupCache cache.SetGetKey) (targetOwner, targetRepo, targetBranch string) {
+	// Get CNAME or TXT
+	var cname string
+	var err error
+	if cachedName, ok := dnsLookupCache.Get(domain); ok {
+		cname = cachedName.(string)
+	} else {
+		cname, err = net.LookupCNAME(domain)
+		cname = strings.TrimSuffix(cname, ".")
+		if err != nil || !strings.HasSuffix(cname, mainDomainSuffix) {
+			cname = ""
+			// TODO: check if the A record matches!
+			names, err := net.LookupTXT(domain)
+			if err == nil {
+				for _, name := range names {
+					name = strings.TrimSuffix(strings.TrimSpace(name), ".")
+					if strings.HasSuffix(name, mainDomainSuffix) {
+						cname = name
+						break
+					}
+				}
+			}
+		}
+		_ = dnsLookupCache.Set(domain, cname, lookupCacheTimeout)
+	}
+	if cname == "" {
+		return
+	}
+	cnameParts := strings.Split(strings.TrimSuffix(cname, mainDomainSuffix), ".")
+	targetOwner = cnameParts[len(cnameParts)-1]
+	if len(cnameParts) > 1 {
+		targetRepo = cnameParts[len(cnameParts)-2]
+	}
+	if len(cnameParts) > 2 {
+		targetBranch = cnameParts[len(cnameParts)-3]
+	}
+	if targetRepo == "" {
+		targetRepo = "pages"
+	}
+	if targetBranch == "" && targetRepo != "pages" {
+		targetBranch = "pages"
+	}
+	// if targetBranch is still empty, the caller must find the default branch
+	return
+}

server/gitea/cache.go

@@ -0,0 +1,115 @@
+package gitea
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"net/http"
+	"time"
+
+	"github.com/rs/zerolog/log"
+
+	"codeberg.org/codeberg/pages/server/cache"
+)
+
+const (
+	// defaultBranchCacheTimeout specifies the timeout for the default branch cache. It can be quite long.
+	defaultBranchCacheTimeout = 15 * time.Minute
+
+	// branchExistenceCacheTimeout specifies the timeout for the branch timestamp & existence cache. It should be shorter
+	// than fileCacheTimeout, as that gets invalidated if the branch timestamp has changed. That way, repo changes will be
+	// picked up faster, while still allowing the content to be cached longer if nothing changes.
+	branchExistenceCacheTimeout = 5 * time.Minute
+
+	// fileCacheTimeout specifies the timeout for the file content cache - you might want to make this quite long, depending
+	// on your available memory.
+	// TODO: move as option into cache interface
+	fileCacheTimeout = 5 * time.Minute
+
+	// fileCacheSizeLimit limits the maximum file size that will be cached, and is set to 1 MB by default.
+	fileCacheSizeLimit = int64(1000 * 1000)
+)
+
+type FileResponse struct {
+	Exists    bool
+	IsSymlink bool
+	ETag      string
+	MimeType  string
+	Body      []byte
+}
+
+func (f FileResponse) IsEmpty() bool {
+	return len(f.Body) != 0
+}
+
+func (f FileResponse) createHttpResponse(cacheKey string) (header http.Header, statusCode int) {
+	header = make(http.Header)
+
+	if f.Exists {
+		statusCode = http.StatusOK
+	} else {
+		statusCode = http.StatusNotFound
+	}
+
+	if f.IsSymlink {
+		header.Set(giteaObjectTypeHeader, objTypeSymlink)
+	}
+	header.Set(ETagHeader, f.ETag)
+	header.Set(ContentTypeHeader, f.MimeType)
+	header.Set(ContentLengthHeader, fmt.Sprintf("%d", len(f.Body)))
+	header.Set(PagesCacheIndicatorHeader, "true")
+
+	log.Trace().Msgf("fileCache for %q used", cacheKey)
+	return header, statusCode
+}
+
+type BranchTimestamp struct {
+	Branch    string
+	Timestamp time.Time
+	notFound  bool
+}
+
+type writeCacheReader struct {
+	originalReader io.ReadCloser
+	buffer         *bytes.Buffer
+	rileResponse   *FileResponse
+	cacheKey       string
+	cache          cache.SetGetKey
+	hasError       bool
+}
+
+func (t *writeCacheReader) Read(p []byte) (n int, err error) {
+	n, err = t.originalReader.Read(p)
+	if err != nil && err != io.EOF {
+		log.Trace().Err(err).Msgf("[cache] original reader for %q has returned an error", t.cacheKey)
+		t.hasError = true
+	} else if n > 0 {
+		_, _ = t.buffer.Write(p[:n])
+	}
+	return
+}
+
+func (t *writeCacheReader) Close() error {
+	if !t.hasError {
+		fc := *t.rileResponse
+		fc.Body = t.buffer.Bytes()
+		_ = t.cache.Set(t.cacheKey, fc, fileCacheTimeout)
+	}
+	log.Trace().Msgf("cacheReader for %q saved=%t closed", t.cacheKey, !t.hasError)
+	return t.originalReader.Close()
+}
+
+func (f FileResponse) CreateCacheReader(r io.ReadCloser, cache cache.SetGetKey, cacheKey string) io.ReadCloser {
+	if r == nil || cache == nil || cacheKey == "" {
+		log.Error().Msg("could not create CacheReader")
+		return nil
+	}
+
+	return &writeCacheReader{
+		originalReader: r,
+		buffer:         bytes.NewBuffer(make([]byte, 0)),
+		rileResponse:   &f,
+		cache:          cache,
+		cacheKey:       cacheKey,
+	}
+}

server/gitea/client.go

@@ -0,0 +1,284 @@
+package gitea
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"mime"
+	"net/http"
+	"net/url"
+	"path"
+	"strconv"
+	"strings"
+	"time"
+
+	"code.gitea.io/sdk/gitea"
+	"github.com/rs/zerolog/log"
+
+	"codeberg.org/codeberg/pages/server/cache"
+)
+
+var ErrorNotFound = errors.New("not found")
+
+const (
+	// cache key prefixe
+	branchTimestampCacheKeyPrefix = "branchTime"
+	defaultBranchCacheKeyPrefix   = "defaultBranch"
+	rawContentCacheKeyPrefix      = "rawContent"
+
+	// pages server
+	PagesCacheIndicatorHeader = "X-Pages-Cache"
+	symlinkReadLimit          = 10000
+
+	// gitea
+	giteaObjectTypeHeader = "X-Gitea-Object-Type"
+	objTypeSymlink        = "symlink"
+
+	// std
+	ETagHeader          = "ETag"
+	ContentTypeHeader   = "Content-Type"
+	ContentLengthHeader = "Content-Length"
+)
+
+type Client struct {
+	sdkClient     *gitea.Client
+	responseCache cache.SetGetKey
+
+	giteaRoot string
+
+	followSymlinks bool
+	supportLFS     bool
+
+	forbiddenMimeTypes map[string]bool
+	defaultMimeType    string
+}
+
+func NewClient(giteaRoot, giteaAPIToken string, respCache cache.SetGetKey, followSymlinks, supportLFS bool) (*Client, error) {
+	rootURL, err := url.Parse(giteaRoot)
+	if err != nil {
+		return nil, err
+	}
+	giteaRoot = strings.Trim(rootURL.String(), "/")
+
+	stdClient := http.Client{Timeout: 10 * time.Second}
+
+	// TODO: pass down
+	var (
+		forbiddenMimeTypes map[string]bool
+		defaultMimeType    string
+	)
+
+	if forbiddenMimeTypes == nil {
+		forbiddenMimeTypes = make(map[string]bool)
+	}
+	if defaultMimeType == "" {
+		defaultMimeType = "application/octet-stream"
+	}
+
+	sdk, err := gitea.NewClient(giteaRoot, gitea.SetHTTPClient(&stdClient), gitea.SetToken(giteaAPIToken))
+	return &Client{
+		sdkClient:     sdk,
+		responseCache: respCache,
+
+		giteaRoot: giteaRoot,
+
+		followSymlinks: followSymlinks,
+		supportLFS:     supportLFS,
+
+		forbiddenMimeTypes: forbiddenMimeTypes,
+		defaultMimeType:    defaultMimeType,
+	}, err
+}
+
+func (client *Client) ContentWebLink(targetOwner, targetRepo, branch, resource string) string {
+	return path.Join(client.giteaRoot, targetOwner, targetRepo, "src/branch", branch, resource)
+}
+
+func (client *Client) GiteaRawContent(targetOwner, targetRepo, ref, resource string) ([]byte, error) {
+	reader, _, _, err := client.ServeRawContent(targetOwner, targetRepo, ref, resource)
+	if err != nil {
+		return nil, err
+	}
+	defer reader.Close()
+	return io.ReadAll(reader)
+}
+
+func (client *Client) ServeRawContent(targetOwner, targetRepo, ref, resource string) (io.ReadCloser, http.Header, int, error) {
+	cacheKey := fmt.Sprintf("%s/%s/%s|%s|%s", rawContentCacheKeyPrefix, targetOwner, targetRepo, ref, resource)
+	log := log.With().Str("cache_key", cacheKey).Logger()
+
+	// handle if cache entry exist
+	if cache, ok := client.responseCache.Get(cacheKey); ok {
+		cache := cache.(FileResponse)
+		cachedHeader, cachedStatusCode := cache.createHttpResponse(cacheKey)
+		// TODO: check against some timestamp missmatch?!?
+		if cache.Exists {
+			if cache.IsSymlink {
+				linkDest := string(cache.Body)
+				log.Debug().Msgf("[cache] follow symlink from %q to %q", resource, linkDest)
+				return client.ServeRawContent(targetOwner, targetRepo, ref, linkDest)
+			} else {
+				log.Debug().Msg("[cache] return bytes")
+				return io.NopCloser(bytes.NewReader(cache.Body)), cachedHeader, cachedStatusCode, nil
+			}
+		} else {
+			return nil, cachedHeader, cachedStatusCode, ErrorNotFound
+		}
+	}
+
+	// not in cache, open reader via gitea api
+	reader, resp, err := client.sdkClient.GetFileReader(targetOwner, targetRepo, ref, resource, client.supportLFS)
+	if resp != nil {
+		switch resp.StatusCode {
+		case http.StatusOK:
+			// first handle symlinks
+			{
+				objType := resp.Header.Get(giteaObjectTypeHeader)
+				log.Trace().Msgf("server raw content object %q", objType)
+				if client.followSymlinks && objType == objTypeSymlink {
+					defer reader.Close()
+					// read limited chars for symlink
+					linkDestBytes, err := io.ReadAll(io.LimitReader(reader, symlinkReadLimit))
+					if err != nil {
+						return nil, nil, http.StatusInternalServerError, err
+					}
+					linkDest := strings.TrimSpace(string(linkDestBytes))
+
+					// we store symlink not content to reduce duplicates in cache
+					if err := client.responseCache.Set(cacheKey, FileResponse{
+						Exists:    true,
+						IsSymlink: true,
+						Body:      []byte(linkDest),
+						ETag:      resp.Header.Get(ETagHeader),
+					}, fileCacheTimeout); err != nil {
+						log.Error().Err(err).Msg("[cache] error on cache write")
+					}
+
+					log.Debug().Msgf("follow symlink from %q to %q", resource, linkDest)
+					return client.ServeRawContent(targetOwner, targetRepo, ref, linkDest)
+				}
+			}
+
+			// now we are sure it's content so set the MIME type
+			mimeType := client.getMimeTypeByExtension(resource)
+			resp.Response.Header.Set(ContentTypeHeader, mimeType)
+
+			if !shouldRespBeSavedToCache(resp.Response) {
+				return reader, resp.Response.Header, resp.StatusCode, err
+			}
+
+			// now we write to cache and respond at the sime time
+			fileResp := FileResponse{
+				Exists:   true,
+				ETag:     resp.Header.Get(ETagHeader),
+				MimeType: mimeType,
+			}
+			return fileResp.CreateCacheReader(reader, client.responseCache, cacheKey), resp.Response.Header, resp.StatusCode, nil
+
+		case http.StatusNotFound:
+			if err := client.responseCache.Set(cacheKey, FileResponse{
+				Exists: false,
+				ETag:   resp.Header.Get(ETagHeader),
+			}, fileCacheTimeout); err != nil {
+				log.Error().Err(err).Msg("[cache] error on cache write")
+			}
+
+			return nil, resp.Response.Header, http.StatusNotFound, ErrorNotFound
+		default:
+			return nil, resp.Response.Header, resp.StatusCode, fmt.Errorf("unexpected status code '%d'", resp.StatusCode)
+		}
+	}
+	return nil, nil, http.StatusInternalServerError, err
+}
+
+func (client *Client) GiteaGetRepoBranchTimestamp(repoOwner, repoName, branchName string) (*BranchTimestamp, error) {
+	cacheKey := fmt.Sprintf("%s/%s/%s/%s", branchTimestampCacheKeyPrefix, repoOwner, repoName, branchName)
+
+	if stamp, ok := client.responseCache.Get(cacheKey); ok && stamp != nil {
+		branchTimeStamp := stamp.(*BranchTimestamp)
+		if branchTimeStamp.notFound {
+			log.Trace().Msgf("[cache] use branch %q not found", branchName)
+			return &BranchTimestamp{}, ErrorNotFound
+		}
+		log.Trace().Msgf("[cache] use branch %q exist", branchName)
+		return branchTimeStamp, nil
+	}
+
+	branch, resp, err := client.sdkClient.GetRepoBranch(repoOwner, repoName, branchName)
+	if err != nil {
+		if resp != nil && resp.StatusCode == http.StatusNotFound {
+			log.Trace().Msgf("[cache] set cache branch %q not found", branchName)
+			if err := client.responseCache.Set(cacheKey, &BranchTimestamp{Branch: branchName, notFound: true}, branchExistenceCacheTimeout); err != nil {
+				log.Error().Err(err).Msg("[cache] error on cache write")
+			}
+			return &BranchTimestamp{}, ErrorNotFound
+		}
+		return &BranchTimestamp{}, err
+	}
+	if resp.StatusCode != http.StatusOK {
+		return &BranchTimestamp{}, fmt.Errorf("unexpected status code '%d'", resp.StatusCode)
+	}
+
+	stamp := &BranchTimestamp{
+		Branch:    branch.Name,
+		Timestamp: branch.Commit.Timestamp,
+	}
+
+	log.Trace().Msgf("set cache branch [%s] exist", branchName)
+	if err := client.responseCache.Set(cacheKey, stamp, branchExistenceCacheTimeout); err != nil {
+		log.Error().Err(err).Msg("[cache] error on cache write")
+	}
+	return stamp, nil
+}
+
+func (client *Client) GiteaGetRepoDefaultBranch(repoOwner, repoName string) (string, error) {
+	cacheKey := fmt.Sprintf("%s/%s/%s", defaultBranchCacheKeyPrefix, repoOwner, repoName)
+
+	if branch, ok := client.responseCache.Get(cacheKey); ok && branch != nil {
+		return branch.(string), nil
+	}
+
+	repo, resp, err := client.sdkClient.GetRepo(repoOwner, repoName)
+	if err != nil {
+		return "", err
+	}
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("unexpected status code '%d'", resp.StatusCode)
+	}
+
+	branch := repo.DefaultBranch
+	if err := client.responseCache.Set(cacheKey, branch, defaultBranchCacheTimeout); err != nil {
+		log.Error().Err(err).Msg("[cache] error on cache write")
+	}
+	return branch, nil
+}
+
+func (client *Client) getMimeTypeByExtension(resource string) string {
+	mimeType := mime.TypeByExtension(path.Ext(resource))
+	mimeTypeSplit := strings.SplitN(mimeType, ";", 2)
+	if client.forbiddenMimeTypes[mimeTypeSplit[0]] || mimeType == "" {
+		mimeType = client.defaultMimeType
+	}
+	log.Trace().Msgf("probe mime of %q is %q", resource, mimeType)
+	return mimeType
+}
+
+func shouldRespBeSavedToCache(resp *http.Response) bool {
+	if resp == nil {
+		return false
+	}
+
+	contentLengthRaw := resp.Header.Get(ContentLengthHeader)
+	if contentLengthRaw == "" {
+		return false
+	}
+
+	contentLeng, err := strconv.ParseInt(contentLengthRaw, 10, 64)
+	if err != nil {
+		log.Error().Err(err).Msg("could not parse content length")
+	}
+
+	// if content to big or could not be determined we not cache it
+	return contentLeng > 0 && contentLeng < fileCacheSizeLimit
+}

server/handler/handler.go

@@ -0,0 +1,113 @@
+package handler
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/rs/zerolog/log"
+
+	"codeberg.org/codeberg/pages/html"
+	"codeberg.org/codeberg/pages/server/cache"
+	"codeberg.org/codeberg/pages/server/context"
+	"codeberg.org/codeberg/pages/server/gitea"
+	"codeberg.org/codeberg/pages/server/version"
+)
+
+const (
+	headerAccessControlAllowOrigin  = "Access-Control-Allow-Origin"
+	headerAccessControlAllowMethods = "Access-Control-Allow-Methods"
+	defaultPagesRepo                = "pages"
+	defaultPagesBranch              = "pages"
+)
+
+// Handler handles a single HTTP request to the web server.
+func Handler(mainDomainSuffix, rawDomain string,
+	giteaClient *gitea.Client,
+	rawInfoPage string,
+	blacklistedPaths, allowedCorsDomains []string,
+	dnsLookupCache, canonicalDomainCache cache.SetGetKey,
+) http.HandlerFunc {
+	return func(w http.ResponseWriter, req *http.Request) {
+		log := log.With().Strs("Handler", []string{req.Host, req.RequestURI}).Logger()
+		ctx := context.New(w, req)
+
+		ctx.RespWriter.Header().Set("Server", "CodebergPages/"+version.Version)
+
+		// Force new default from specification (since November 2020) - see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy#strict-origin-when-cross-origin
+		ctx.RespWriter.Header().Set("Referrer-Policy", "strict-origin-when-cross-origin")
+
+		// Enable browser caching for up to 10 minutes
+		ctx.RespWriter.Header().Set("Cache-Control", "public, max-age=600")
+
+		trimmedHost := ctx.TrimHostPort()
+
+		// Add HSTS for RawDomain and MainDomainSuffix
+		if hsts := getHSTSHeader(trimmedHost, mainDomainSuffix, rawDomain); hsts != "" {
+			ctx.RespWriter.Header().Set("Strict-Transport-Security", hsts)
+		}
+
+		// Handle all http methods
+		ctx.RespWriter.Header().Set("Allow", http.MethodGet+", "+http.MethodHead+", "+http.MethodOptions)
+		switch ctx.Req.Method {
+		case http.MethodOptions:
+			// return Allow header
+			ctx.RespWriter.WriteHeader(http.StatusNoContent)
+			return
+		case http.MethodGet,
+			http.MethodHead:
+			// end switch case and handle allowed requests
+			break
+		default:
+			// Block all methods not required for static pages
+			ctx.String("Method not allowed", http.StatusMethodNotAllowed)
+			return
+		}
+
+		// Block blacklisted paths (like ACME challenges)
+		for _, blacklistedPath := range blacklistedPaths {
+			if strings.HasPrefix(ctx.Path(), blacklistedPath) {
+				html.ReturnErrorPage(ctx, "requested blacklisted path", http.StatusForbidden)
+				return
+			}
+		}
+
+		// Allow CORS for specified domains
+		allowCors := false
+		for _, allowedCorsDomain := range allowedCorsDomains {
+			if strings.EqualFold(trimmedHost, allowedCorsDomain) {
+				allowCors = true
+				break
+			}
+		}
+		if allowCors {
+			ctx.RespWriter.Header().Set(headerAccessControlAllowOrigin, "*")
+			ctx.RespWriter.Header().Set(headerAccessControlAllowMethods, http.MethodGet+", "+http.MethodHead)
+		}
+
+		// Prepare request information to Gitea
+		pathElements := strings.Split(strings.Trim(ctx.Path(), "/"), "/")
+
+		if rawDomain != "" && strings.EqualFold(trimmedHost, rawDomain) {
+			log.Debug().Msg("raw domain request detecded")
+			handleRaw(log, ctx, giteaClient,
+				mainDomainSuffix, rawInfoPage,
+				trimmedHost,
+				pathElements,
+				canonicalDomainCache)
+		} else if strings.HasSuffix(trimmedHost, mainDomainSuffix) {
+			log.Debug().Msg("subdomain request detecded")
+			handleSubDomain(log, ctx, giteaClient,
+				mainDomainSuffix,
+				trimmedHost,
+				pathElements,
+				canonicalDomainCache)
+		} else {
+			log.Debug().Msg("custom domain request detecded")
+			handleCustomDomain(log, ctx, giteaClient,
+				mainDomainSuffix,
+				trimmedHost,
+				pathElements,
+				dnsLookupCache, canonicalDomainCache)
+		}
+	}
+}

server/handler/handler_custom_domain.go

@@ -0,0 +1,71 @@
+package handler
+
+import (
+	"net/http"
+	"path"
+	"strings"
+
+	"codeberg.org/codeberg/pages/html"
+	"codeberg.org/codeberg/pages/server/cache"
+	"codeberg.org/codeberg/pages/server/context"
+	"codeberg.org/codeberg/pages/server/dns"
+	"codeberg.org/codeberg/pages/server/gitea"
+	"codeberg.org/codeberg/pages/server/upstream"
+	"github.com/rs/zerolog"
+)
+
+func handleCustomDomain(log zerolog.Logger, ctx *context.Context, giteaClient *gitea.Client,
+	mainDomainSuffix string,
+	trimmedHost string,
+	pathElements []string,
+	dnsLookupCache, canonicalDomainCache cache.SetGetKey,
+) {
+	// Serve pages from custom domains
+	targetOwner, targetRepo, targetBranch := dns.GetTargetFromDNS(trimmedHost, mainDomainSuffix, dnsLookupCache)
+	if targetOwner == "" {
+		html.ReturnErrorPage(ctx,
+			"could not obtain repo owner from custom domain",
+			http.StatusFailedDependency)
+		return
+	}
+
+	pathParts := pathElements
+	canonicalLink := false
+	if strings.HasPrefix(pathElements[0], "@") {
+		targetBranch = pathElements[0][1:]
+		pathParts = pathElements[1:]
+		canonicalLink = true
+	}
+
+	// Try to use the given repo on the given branch or the default branch
+	log.Debug().Msg("custom domain preparations, now trying with details from DNS")
+	if targetOpt, works := tryBranch(log, ctx, giteaClient, &upstream.Options{
+		TryIndexPages: true,
+		TargetOwner:   targetOwner,
+		TargetRepo:    targetRepo,
+		TargetBranch:  targetBranch,
+		TargetPath:    path.Join(pathParts...),
+	}, canonicalLink); works {
+		canonicalDomain, valid := targetOpt.CheckCanonicalDomain(giteaClient, trimmedHost, mainDomainSuffix, canonicalDomainCache)
+		if !valid {
+			html.ReturnErrorPage(ctx, "domain not specified in <code>.domains</code> file", http.StatusMisdirectedRequest)
+			return
+		} else if canonicalDomain != trimmedHost {
+			// only redirect if the target is also a codeberg page!
+			targetOwner, _, _ = dns.GetTargetFromDNS(strings.SplitN(canonicalDomain, "/", 2)[0], mainDomainSuffix, dnsLookupCache)
+			if targetOwner != "" {
+				ctx.Redirect("https://"+canonicalDomain+"/"+targetOpt.TargetPath, http.StatusTemporaryRedirect)
+				return
+			}
+
+			html.ReturnErrorPage(ctx, "target is no codeberg page", http.StatusFailedDependency)
+			return
+		}
+
+		log.Debug().Msg("tryBranch, now trying upstream 7")
+		tryUpstream(ctx, giteaClient, mainDomainSuffix, trimmedHost, targetOpt, canonicalDomainCache)
+		return
+	}
+
+	html.ReturnErrorPage(ctx, "could not find target for custom domain", http.StatusFailedDependency)
+}

server/handler/handler_raw_domain.go

@@ -0,0 +1,67 @@
+package handler
+
+import (
+	"fmt"
+	"net/http"
+	"path"
+	"strings"
+
+	"github.com/rs/zerolog"
+
+	"codeberg.org/codeberg/pages/html"
+	"codeberg.org/codeberg/pages/server/cache"
+	"codeberg.org/codeberg/pages/server/context"
+	"codeberg.org/codeberg/pages/server/gitea"
+	"codeberg.org/codeberg/pages/server/upstream"
+)
+
+func handleRaw(log zerolog.Logger, ctx *context.Context, giteaClient *gitea.Client,
+	mainDomainSuffix, rawInfoPage string,
+	trimmedHost string,
+	pathElements []string,
+	canonicalDomainCache cache.SetGetKey,
+) {
+	// Serve raw content from RawDomain
+	log.Debug().Msg("raw domain")
+
+	if len(pathElements) < 2 {
+		// https://{RawDomain}/{owner}/{repo}[/@{branch}]/{path} is required
+		ctx.Redirect(rawInfoPage, http.StatusTemporaryRedirect)
+		return
+	}
+
+	// raw.codeberg.org/example/myrepo/@main/index.html
+	if len(pathElements) > 2 && strings.HasPrefix(pathElements[2], "@") {
+		log.Debug().Msg("raw domain preparations, now trying with specified branch")
+		if targetOpt, works := tryBranch(log, ctx, giteaClient, &upstream.Options{
+			ServeRaw:     true,
+			TargetOwner:  pathElements[0],
+			TargetRepo:   pathElements[1],
+			TargetBranch: pathElements[2][1:],
+			TargetPath:   path.Join(pathElements[3:]...),
+		}, true); works {
+			log.Trace().Msg("tryUpstream: serve raw domain with specified branch")
+			tryUpstream(ctx, giteaClient, mainDomainSuffix, trimmedHost, targetOpt, canonicalDomainCache)
+			return
+		}
+		log.Debug().Msg("missing branch info")
+		html.ReturnErrorPage(ctx, "missing branch info", http.StatusFailedDependency)
+		return
+	}
+
+	log.Debug().Msg("raw domain preparations, now trying with default branch")
+	if targetOpt, works := tryBranch(log, ctx, giteaClient, &upstream.Options{
+		TryIndexPages: false,
+		ServeRaw:      true,
+		TargetOwner:   pathElements[0],
+		TargetRepo:    pathElements[1],
+		TargetPath:    path.Join(pathElements[2:]...),
+	}, true); works {
+		log.Trace().Msg("tryUpstream: serve raw domain with default branch")
+		tryUpstream(ctx, giteaClient, mainDomainSuffix, trimmedHost, targetOpt, canonicalDomainCache)
+	} else {
+		html.ReturnErrorPage(ctx,
+			fmt.Sprintf("raw domain could not find repo '%s/%s' or repo is empty", targetOpt.TargetOwner, targetOpt.TargetRepo),
+			http.StatusNotFound)
+	}
+}

server/handler/handler_sub_domain.go

@@ -0,0 +1,120 @@
+package handler
+
+import (
+	"fmt"
+	"net/http"
+	"path"
+	"strings"
+
+	"github.com/rs/zerolog"
+
+	"codeberg.org/codeberg/pages/html"
+	"codeberg.org/codeberg/pages/server/cache"
+	"codeberg.org/codeberg/pages/server/context"
+	"codeberg.org/codeberg/pages/server/gitea"
+	"codeberg.org/codeberg/pages/server/upstream"
+)
+
+func handleSubDomain(log zerolog.Logger, ctx *context.Context, giteaClient *gitea.Client,
+	mainDomainSuffix string,
+	trimmedHost string,
+	pathElements []string,
+	canonicalDomainCache cache.SetGetKey,
+) {
+	// Serve pages from subdomains of MainDomainSuffix
+	log.Debug().Msg("main domain suffix")
+
+	targetOwner := strings.TrimSuffix(trimmedHost, mainDomainSuffix)
+	targetRepo := pathElements[0]
+
+	if targetOwner == "www" {
+		// www.codeberg.page redirects to codeberg.page // TODO: rm hardcoded - use cname?
+		ctx.Redirect("https://"+mainDomainSuffix[1:]+ctx.Path(), http.StatusPermanentRedirect)
+		return
+	}
+
+	// Check if the first directory is a repo with the second directory as a branch
+	// example.codeberg.page/myrepo/@main/index.html
+	if len(pathElements) > 1 && strings.HasPrefix(pathElements[1], "@") {
+		if targetRepo == defaultPagesRepo {
+			// example.codeberg.org/pages/@... redirects to example.codeberg.org/@...
+			ctx.Redirect("/"+strings.Join(pathElements[1:], "/"), http.StatusTemporaryRedirect)
+			return
+		}
+
+		log.Debug().Msg("main domain preparations, now trying with specified repo & branch")
+		if targetOpt, works := tryBranch(log, ctx, giteaClient, &upstream.Options{
+			TryIndexPages: true,
+			TargetOwner:   targetOwner,
+			TargetRepo:    pathElements[0],
+			TargetBranch:  pathElements[1][1:],
+			TargetPath:    path.Join(pathElements[2:]...),
+		}, true); works {
+			log.Trace().Msg("tryUpstream: serve with specified repo and branch")
+			tryUpstream(ctx, giteaClient, mainDomainSuffix, trimmedHost, targetOpt, canonicalDomainCache)
+		} else {
+			html.ReturnErrorPage(ctx,
+				fmt.Sprintf("explizite set branch %q do not exist at '%s/%s'", targetOpt.TargetBranch, targetOpt.TargetOwner, targetOpt.TargetRepo),
+				http.StatusFailedDependency)
+		}
+		return
+	}
+
+	// Check if the first directory is a branch for the defaultPagesRepo
+	// example.codeberg.page/@main/index.html
+	if strings.HasPrefix(pathElements[0], "@") {
+		log.Debug().Msg("main domain preparations, now trying with specified branch")
+		if targetOpt, works := tryBranch(log, ctx, giteaClient, &upstream.Options{
+			TryIndexPages: true,
+			TargetOwner:   targetOwner,
+			TargetRepo:    defaultPagesRepo,
+			TargetBranch:  pathElements[0][1:],
+			TargetPath:    path.Join(pathElements[1:]...),
+		}, true); works {
+			log.Trace().Msg("tryUpstream: serve default pages repo with specified branch")
+			tryUpstream(ctx, giteaClient, mainDomainSuffix, trimmedHost, targetOpt, canonicalDomainCache)
+		} else {
+			html.ReturnErrorPage(ctx,
+				fmt.Sprintf("explizite set branch %q do not exist at '%s/%s'", targetOpt.TargetBranch, targetOpt.TargetOwner, targetOpt.TargetRepo),
+				http.StatusFailedDependency)
+		}
+		return
+	}
+
+	// Check if the first directory is a repo with a defaultPagesRepo branch
+	// example.codeberg.page/myrepo/index.html
+	// example.codeberg.page/pages/... is not allowed here.
+	log.Debug().Msg("main domain preparations, now trying with specified repo")
+	if pathElements[0] != defaultPagesRepo {
+		if targetOpt, works := tryBranch(log, ctx, giteaClient, &upstream.Options{
+			TryIndexPages: true,
+			TargetOwner:   targetOwner,
+			TargetRepo:    pathElements[0],
+			TargetBranch:  defaultPagesBranch,
+			TargetPath:    path.Join(pathElements[1:]...),
+		}, false); works {
+			log.Debug().Msg("tryBranch, now trying upstream 5")
+			tryUpstream(ctx, giteaClient, mainDomainSuffix, trimmedHost, targetOpt, canonicalDomainCache)
+			return
+		}
+	}
+
+	// Try to use the defaultPagesRepo on its default branch
+	// example.codeberg.page/index.html
+	log.Debug().Msg("main domain preparations, now trying with default repo/branch")
+	if targetOpt, works := tryBranch(log, ctx, giteaClient, &upstream.Options{
+		TryIndexPages: true,
+		TargetOwner:   targetOwner,
+		TargetRepo:    defaultPagesRepo,
+		TargetPath:    path.Join(pathElements...),
+	}, false); works {
+		log.Debug().Msg("tryBranch, now trying upstream 6")
+		tryUpstream(ctx, giteaClient, mainDomainSuffix, trimmedHost, targetOpt, canonicalDomainCache)
+		return
+	}
+
+	// Couldn't find a valid repo/branch
+	html.ReturnErrorPage(ctx,
+		fmt.Sprintf("could not find a valid repository[%s]", targetRepo),
+		http.StatusNotFound)
+}

server/handler/handler_test.go

@@ -0,0 +1,50 @@
+package handler
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"codeberg.org/codeberg/pages/server/cache"
+	"codeberg.org/codeberg/pages/server/gitea"
+	"github.com/rs/zerolog/log"
+)
+
+func TestHandlerPerformance(t *testing.T) {
+	giteaClient, _ := gitea.NewClient("https://codeberg.org", "", cache.NewKeyValueCache(), false, false)
+	testHandler := Handler(
+		"codeberg.page", "raw.codeberg.org",
+		giteaClient,
+		"https://docs.codeberg.org/pages/raw-content/",
+		[]string{"/.well-known/acme-challenge/"},
+		[]string{"raw.codeberg.org", "fonts.codeberg.org", "design.codeberg.org"},
+		cache.NewKeyValueCache(),
+		cache.NewKeyValueCache(),
+	)
+
+	testCase := func(uri string, status int) {
+		t.Run(uri, func(t *testing.T) {
+			req := httptest.NewRequest("GET", uri, http.NoBody)
+			w := httptest.NewRecorder()
+
+			log.Printf("Start: %v\n", time.Now())
+			start := time.Now()
+			testHandler(w, req)
+			end := time.Now()
+			log.Printf("Done: %v\n", time.Now())
+
+			resp := w.Result()
+
+			if resp.StatusCode != status {
+				t.Errorf("request failed with status code %d", resp.StatusCode)
+			} else {
+				t.Logf("request took %d milliseconds", end.Sub(start).Milliseconds())
+			}
+		})
+	}
+
+	testCase("https://mondstern.codeberg.page/", 404) // TODO: expect 200
+	testCase("https://codeberg.page/", 404)           // TODO: expect 200
+	testCase("https://example.momar.xyz/", 424)
+}

server/handler/hsts.go

@@ -0,0 +1,15 @@
+package handler
+
+import (
+	"strings"
+)
+
+// getHSTSHeader returns a HSTS header with includeSubdomains & preload for MainDomainSuffix and RawDomain, or an empty
+// string for custom domains.
+func getHSTSHeader(host, mainDomainSuffix, rawDomain string) string {
+	if strings.HasSuffix(host, mainDomainSuffix) || strings.EqualFold(host, rawDomain) {
+		return "max-age=63072000; includeSubdomains; preload"
+	} else {
+		return ""
+	}
+}

server/handler/try.go

@@ -0,0 +1,76 @@
+package handler
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/rs/zerolog"
+
+	"codeberg.org/codeberg/pages/html"
+	"codeberg.org/codeberg/pages/server/cache"
+	"codeberg.org/codeberg/pages/server/context"
+	"codeberg.org/codeberg/pages/server/gitea"
+	"codeberg.org/codeberg/pages/server/upstream"
+)
+
+// tryUpstream forwards the target request to the Gitea API, and shows an error page on failure.
+func tryUpstream(ctx *context.Context, giteaClient *gitea.Client,
+	mainDomainSuffix, trimmedHost string,
+	options *upstream.Options,
+	canonicalDomainCache cache.SetGetKey,
+) {
+	// check if a canonical domain exists on a request on MainDomain
+	if strings.HasSuffix(trimmedHost, mainDomainSuffix) {
+		canonicalDomain, _ := options.CheckCanonicalDomain(giteaClient, "", mainDomainSuffix, canonicalDomainCache)
+		if !strings.HasSuffix(strings.SplitN(canonicalDomain, "/", 2)[0], mainDomainSuffix) {
+			canonicalPath := ctx.Req.RequestURI
+			if options.TargetRepo != defaultPagesRepo {
+				path := strings.SplitN(canonicalPath, "/", 3)
+				if len(path) >= 3 {
+					canonicalPath = "/" + path[2]
+				}
+			}
+			ctx.Redirect("https://"+canonicalDomain+canonicalPath, http.StatusTemporaryRedirect)
+			return
+		}
+	}
+
+	// Add host for debugging.
+	options.Host = trimmedHost
+
+	// Try to request the file from the Gitea API
+	if !options.Upstream(ctx, giteaClient) {
+		html.ReturnErrorPage(ctx, "", ctx.StatusCode)
+	}
+}
+
+// tryBranch checks if a branch exists and populates the target variables. If canonicalLink is non-empty,
+// it will also disallow search indexing and add a Link header to the canonical URL.
+func tryBranch(log zerolog.Logger, ctx *context.Context, giteaClient *gitea.Client,
+	targetOptions *upstream.Options, canonicalLink bool,
+) (*upstream.Options, bool) {
+	if targetOptions.TargetOwner == "" || targetOptions.TargetRepo == "" {
+		log.Debug().Msg("tryBranch: owner or repo is empty")
+		return nil, false
+	}
+
+	// Replace "~" to "/" so we can access branch that contains slash character
+	// Branch name cannot contain "~" so doing this is okay
+	targetOptions.TargetBranch = strings.ReplaceAll(targetOptions.TargetBranch, "~", "/")
+
+	// Check if the branch exists, otherwise treat it as a file path
+	branchExist, _ := targetOptions.GetBranchTimestamp(giteaClient)
+	if !branchExist {
+		log.Debug().Msg("tryBranch: branch doesn't exist")
+		return nil, false
+	}
+
+	if canonicalLink {
+		// Hide from search machines & add canonical link
+		ctx.RespWriter.Header().Set("X-Robots-Tag", "noarchive, noindex")
+		ctx.RespWriter.Header().Set("Link", targetOptions.ContentWebLink(giteaClient)+"; rel=\"canonical\"")
+	}
+
+	log.Debug().Msg("tryBranch: true")
+	return targetOptions, true
+}

server/setup.go

@@ -0,0 +1,27 @@
+package server
+
+import (
+	"net/http"
+	"strings"
+
+	"codeberg.org/codeberg/pages/server/cache"
+	"codeberg.org/codeberg/pages/server/context"
+	"codeberg.org/codeberg/pages/server/utils"
+)
+
+func SetupHTTPACMEChallengeServer(challengeCache cache.SetGetKey) http.HandlerFunc {
+	challengePath := "/.well-known/acme-challenge/"
+
+	return func(w http.ResponseWriter, req *http.Request) {
+		ctx := context.New(w, req)
+		if strings.HasPrefix(ctx.Path(), challengePath) {
+			challenge, ok := challengeCache.Get(utils.TrimHostPort(ctx.Host()) + "/" + strings.TrimPrefix(ctx.Path(), challengePath))
+			if !ok || challenge == nil {
+				ctx.String("no challenge for this token", http.StatusNotFound)
+			}
+			ctx.String(challenge.(string))
+		} else {
+			ctx.Redirect("https://"+ctx.Host()+ctx.Path(), http.StatusMovedPermanently)
+		}
+	}
+}

server/upstream/domains.go

@@ -0,0 +1,70 @@
+package upstream
+
+import (
+	"errors"
+	"strings"
+	"time"
+
+	"github.com/rs/zerolog/log"
+
+	"codeberg.org/codeberg/pages/server/cache"
+	"codeberg.org/codeberg/pages/server/gitea"
+)
+
+// canonicalDomainCacheTimeout specifies the timeout for the canonical domain cache.
+var canonicalDomainCacheTimeout = 15 * time.Minute
+
+const canonicalDomainConfig = ".domains"
+
+// CheckCanonicalDomain returns the canonical domain specified in the repo (using the `.domains` file).
+func (o *Options) CheckCanonicalDomain(giteaClient *gitea.Client, actualDomain, mainDomainSuffix string, canonicalDomainCache cache.SetGetKey) (domain string, valid bool) {
+	// Check if this request is cached.
+	if cachedValue, ok := canonicalDomainCache.Get(o.TargetOwner + "/" + o.TargetRepo + "/" + o.TargetBranch); ok {
+		domains := cachedValue.([]string)
+		for _, domain := range domains {
+			if domain == actualDomain {
+				valid = true
+				break
+			}
+		}
+		return domains[0], valid
+	}
+
+	body, err := giteaClient.GiteaRawContent(o.TargetOwner, o.TargetRepo, o.TargetBranch, canonicalDomainConfig)
+	if err != nil && !errors.Is(err, gitea.ErrorNotFound) {
+		log.Error().Err(err).Msgf("could not read %s of %s/%s", canonicalDomainConfig, o.TargetOwner, o.TargetRepo)
+	}
+
+	var domains []string
+	for _, domain := range strings.Split(string(body), "\n") {
+		domain = strings.ToLower(domain)
+		domain = strings.TrimSpace(domain)
+		domain = strings.TrimPrefix(domain, "http://")
+		domain = strings.TrimPrefix(domain, "https://")
+		if len(domain) > 0 && !strings.HasPrefix(domain, "#") && !strings.ContainsAny(domain, "\t /") && strings.ContainsRune(domain, '.') {
+			domains = append(domains, domain)
+		}
+		if domain == actualDomain {
+			valid = true
+		}
+	}
+
+	// Add [owner].[pages-domain] as valid domain.
+	domains = append(domains, o.TargetOwner+mainDomainSuffix)
+	if domains[len(domains)-1] == actualDomain {
+		valid = true
+	}
+
+	// If the target repository isn't called pages, add `/[repository]` to the
+	// previous valid domain.
+	if o.TargetRepo != "" && o.TargetRepo != "pages" {
+		domains[len(domains)-1] += "/" + o.TargetRepo
+	}
+
+	// Add result to cache.
+	_ = canonicalDomainCache.Set(o.TargetOwner+"/"+o.TargetRepo+"/"+o.TargetBranch, domains, canonicalDomainCacheTimeout)
+
+	// Return the first domain from the list and return if any of the domains
+	// matched the requested domain.
+	return domains[0], valid
+}

server/upstream/header.go

@@ -0,0 +1,28 @@
+package upstream
+
+import (
+	"net/http"
+	"time"
+
+	"codeberg.org/codeberg/pages/server/context"
+	"codeberg.org/codeberg/pages/server/gitea"
+)
+
+// setHeader set values to response header
+func (o *Options) setHeader(ctx *context.Context, header http.Header) {
+	if eTag := header.Get(gitea.ETagHeader); eTag != "" {
+		ctx.RespWriter.Header().Set(gitea.ETagHeader, eTag)
+	}
+	if cacheIndicator := header.Get(gitea.PagesCacheIndicatorHeader); cacheIndicator != "" {
+		ctx.RespWriter.Header().Set(gitea.PagesCacheIndicatorHeader, cacheIndicator)
+	}
+	if length := header.Get(gitea.ContentLengthHeader); length != "" {
+		ctx.RespWriter.Header().Set(gitea.ContentLengthHeader, length)
+	}
+	if mime := header.Get(gitea.ContentTypeHeader); mime == "" || o.ServeRaw {
+		ctx.RespWriter.Header().Set(gitea.ContentTypeHeader, rawMime)
+	} else {
+		ctx.RespWriter.Header().Set(gitea.ContentTypeHeader, mime)
+	}
+	ctx.RespWriter.Header().Set(headerLastModified, o.BranchTimestamp.In(time.UTC).Format(time.RFC1123))
+}

server/upstream/helper.go

@@ -0,0 +1,47 @@
+package upstream
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/rs/zerolog/log"
+
+	"codeberg.org/codeberg/pages/server/gitea"
+)
+
+// GetBranchTimestamp finds the default branch (if branch is "") and save branch and it's last modification time to Options
+func (o *Options) GetBranchTimestamp(giteaClient *gitea.Client) (bool, error) {
+	log := log.With().Strs("BranchInfo", []string{o.TargetOwner, o.TargetRepo, o.TargetBranch}).Logger()
+
+	if o.TargetBranch == "" {
+		// Get default branch
+		defaultBranch, err := giteaClient.GiteaGetRepoDefaultBranch(o.TargetOwner, o.TargetRepo)
+		if err != nil {
+			log.Err(err).Msg("Couldn't fetch default branch from repository")
+			return false, err
+		}
+		log.Debug().Msgf("Successfully fetched default branch %q from Gitea", defaultBranch)
+		o.TargetBranch = defaultBranch
+	}
+
+	timestamp, err := giteaClient.GiteaGetRepoBranchTimestamp(o.TargetOwner, o.TargetRepo, o.TargetBranch)
+	if err != nil {
+		if !errors.Is(err, gitea.ErrorNotFound) {
+			log.Error().Err(err).Msg("Could not get latest commit timestamp from branch")
+		}
+		return false, err
+	}
+
+	if timestamp == nil || timestamp.Branch == "" {
+		return false, fmt.Errorf("empty response")
+	}
+
+	log.Debug().Msgf("Successfully fetched latest commit timestamp from branch: %#v", timestamp)
+	o.BranchTimestamp = timestamp.Timestamp
+	o.TargetBranch = timestamp.Branch
+	return true, nil
+}
+
+func (o *Options) ContentWebLink(giteaClient *gitea.Client) string {
+	return giteaClient.ContentWebLink(o.TargetOwner, o.TargetRepo, o.TargetBranch, o.TargetPath) + "; rel=\"canonical\""
+}

server/upstream/upstream.go

@@ -0,0 +1,200 @@
+package upstream
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/rs/zerolog/log"
+
+	"codeberg.org/codeberg/pages/html"
+	"codeberg.org/codeberg/pages/server/context"
+	"codeberg.org/codeberg/pages/server/gitea"
+)
+
+const (
+	headerLastModified    = "Last-Modified"
+	headerIfModifiedSince = "If-Modified-Since"
+
+	rawMime = "text/plain; charset=utf-8"
+)
+
+// upstreamIndexPages lists pages that may be considered as index pages for directories.
+var upstreamIndexPages = []string{
+	"index.html",
+}
+
+// upstreamNotFoundPages lists pages that may be considered as custom 404 Not Found pages.
+var upstreamNotFoundPages = []string{
+	"404.html",
+}
+
+// Options provides various options for the upstream request.
+type Options struct {
+	TargetOwner  string
+	TargetRepo   string
+	TargetBranch string
+	TargetPath   string
+
+	// Used for debugging purposes.
+	Host string
+
+	TryIndexPages   bool
+	BranchTimestamp time.Time
+	// internal
+	appendTrailingSlash bool
+	redirectIfExists    string
+
+	ServeRaw bool
+}
+
+// Upstream requests a file from the Gitea API at GiteaRoot and writes it to the request context.
+func (o *Options) Upstream(ctx *context.Context, giteaClient *gitea.Client) (final bool) {
+	log := log.With().Strs("upstream", []string{o.TargetOwner, o.TargetRepo, o.TargetBranch, o.TargetPath}).Logger()
+
+	if o.TargetOwner == "" || o.TargetRepo == "" {
+		html.ReturnErrorPage(ctx, "either repo owner or name info is missing", http.StatusBadRequest)
+		return true
+	}
+
+	// Check if the branch exists and when it was modified
+	if o.BranchTimestamp.IsZero() {
+		branchExist, err := o.GetBranchTimestamp(giteaClient)
+		// handle 404
+		if err != nil && errors.Is(err, gitea.ErrorNotFound) || !branchExist {
+			html.ReturnErrorPage(ctx,
+				fmt.Sprintf("branch %q for '%s/%s' not found", o.TargetBranch, o.TargetOwner, o.TargetRepo),
+				http.StatusNotFound)
+			return true
+		}
+
+		// handle unexpected errors
+		if err != nil {
+			html.ReturnErrorPage(ctx,
+				fmt.Sprintf("could not get timestamp of branch %q: %v", o.TargetBranch, err),
+				http.StatusFailedDependency)
+			return true
+		}
+	}
+
+	// Check if the browser has a cached version
+	if ctx.Response() != nil {
+		if ifModifiedSince, err := time.Parse(time.RFC1123, ctx.Response().Header.Get(headerIfModifiedSince)); err == nil {
+			if ifModifiedSince.After(o.BranchTimestamp) {
+				ctx.RespWriter.WriteHeader(http.StatusNotModified)
+				log.Trace().Msg("check response against last modified: valid")
+				return true
+			}
+		}
+		log.Trace().Msg("check response against last modified: outdated")
+	}
+
+	log.Debug().Msg("Preparing")
+
+	reader, header, statusCode, err := giteaClient.ServeRawContent(o.TargetOwner, o.TargetRepo, o.TargetBranch, o.TargetPath)
+	if reader != nil {
+		defer reader.Close()
+	}
+
+	log.Debug().Msg("Aquisting")
+
+	// Handle not found error
+	if err != nil && errors.Is(err, gitea.ErrorNotFound) {
+		if o.TryIndexPages {
+			// copy the o struct & try if an index page exists
+			optionsForIndexPages := *o
+			optionsForIndexPages.TryIndexPages = false
+			optionsForIndexPages.appendTrailingSlash = true
+			for _, indexPage := range upstreamIndexPages {
+				optionsForIndexPages.TargetPath = strings.TrimSuffix(o.TargetPath, "/") + "/" + indexPage
+				if optionsForIndexPages.Upstream(ctx, giteaClient) {
+					return true
+				}
+			}
+			// compatibility fix for GitHub Pages (/example → /example.html)
+			optionsForIndexPages.appendTrailingSlash = false
+			optionsForIndexPages.redirectIfExists = strings.TrimSuffix(ctx.Path(), "/") + ".html"
+			optionsForIndexPages.TargetPath = o.TargetPath + ".html"
+			if optionsForIndexPages.Upstream(ctx, giteaClient) {
+				return true
+			}
+		}
+
+		ctx.StatusCode = http.StatusNotFound
+		if o.TryIndexPages {
+			// copy the o struct & try if a not found page exists
+			optionsForNotFoundPages := *o
+			optionsForNotFoundPages.TryIndexPages = false
+			optionsForNotFoundPages.appendTrailingSlash = false
+			for _, notFoundPage := range upstreamNotFoundPages {
+				optionsForNotFoundPages.TargetPath = "/" + notFoundPage
+				if optionsForNotFoundPages.Upstream(ctx, giteaClient) {
+					return true
+				}
+			}
+		}
+		return false
+	}
+
+	// handle unexpected client errors
+	if err != nil || reader == nil || statusCode != http.StatusOK {
+		log.Debug().Msg("Handling error")
+		var msg string
+
+		if err != nil {
+			msg = "gitea client returned unexpected error"
+			log.Error().Err(err).Msg(msg)
+			msg = fmt.Sprintf("%s: %v", msg, err)
+		}
+		if reader == nil {
+			msg = "gitea client returned no reader"
+			log.Error().Msg(msg)
+		}
+		if statusCode != http.StatusOK {
+			msg = fmt.Sprintf("Couldn't fetch contents (status code %d)", statusCode)
+			log.Error().Msg(msg)
+		}
+
+		html.ReturnErrorPage(ctx, msg, http.StatusInternalServerError)
+		return true
+	}
+
+	// Append trailing slash if missing (for index files), and redirect to fix filenames in general
+	// o.appendTrailingSlash is only true when looking for index pages
+	if o.appendTrailingSlash && !strings.HasSuffix(ctx.Path(), "/") {
+		ctx.Redirect(ctx.Path()+"/", http.StatusTemporaryRedirect)
+		return true
+	}
+	if strings.HasSuffix(ctx.Path(), "/index.html") {
+		ctx.Redirect(strings.TrimSuffix(ctx.Path(), "index.html"), http.StatusTemporaryRedirect)
+		return true
+	}
+	if o.redirectIfExists != "" {
+		ctx.Redirect(o.redirectIfExists, http.StatusTemporaryRedirect)
+		return true
+	}
+
+	// Set ETag & MIME
+	o.setHeader(ctx, header)
+
+	log.Debug().Msg("Prepare response")
+
+	ctx.RespWriter.WriteHeader(ctx.StatusCode)
+
+	// Write the response body to the original request
+	if reader != nil {
+		_, err := io.Copy(ctx.RespWriter, reader)
+		if err != nil {
+			log.Error().Err(err).Msgf("Couldn't write body for %q", o.TargetPath)
+			html.ReturnErrorPage(ctx, "", http.StatusInternalServerError)
+			return true
+		}
+	}
+
+	log.Debug().Msg("Sending response")
+
+	return true
+}

server/utils/utils.go

@@ -0,0 +1,27 @@
+package utils
+
+import (
+	"net/url"
+	"path"
+	"strings"
+)
+
+func TrimHostPort(host string) string {
+	i := strings.IndexByte(host, ':')
+	if i >= 0 {
+		return host[:i]
+	}
+	return host
+}
+
+func CleanPath(uriPath string) string {
+	unescapedPath, _ := url.PathUnescape(uriPath)
+	cleanedPath := path.Join("/", unescapedPath)
+
+	// If the path refers to a directory, add a trailing slash.
+	if !strings.HasSuffix(cleanedPath, "/") && (strings.HasSuffix(unescapedPath, "/") || strings.HasSuffix(unescapedPath, "/.") || strings.HasSuffix(unescapedPath, "/..")) {
+		cleanedPath += "/"
+	}
+
+	return cleanedPath
+}

server/utils/utils_test.go

@@ -0,0 +1,69 @@
+package utils
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestTrimHostPort(t *testing.T) {
+	assert.EqualValues(t, "aa", TrimHostPort("aa"))
+	assert.EqualValues(t, "", TrimHostPort(":"))
+	assert.EqualValues(t, "example.com", TrimHostPort("example.com:80"))
+}
+
+// TestCleanPath is mostly copied from fasthttp, to keep the behaviour we had before migrating away from it.
+// Source (MIT licensed): https://github.com/valyala/fasthttp/blob/v1.48.0/uri_test.go#L154
+// Copyright (c) 2015-present Aliaksandr Valialkin, VertaMedia, Kirill Danshin, Erik Dubbelboer, FastHTTP Authors
+func TestCleanPath(t *testing.T) {
+	// double slash
+	testURIPathNormalize(t, "/aa//bb", "/aa/bb")
+
+	// triple slash
+	testURIPathNormalize(t, "/x///y/", "/x/y/")
+
+	// multi slashes
+	testURIPathNormalize(t, "/abc//de///fg////", "/abc/de/fg/")
+
+	// encoded slashes
+	testURIPathNormalize(t, "/xxxx%2fyyy%2f%2F%2F", "/xxxx/yyy/")
+
+	// dotdot
+	testURIPathNormalize(t, "/aaa/..", "/")
+
+	// dotdot with trailing slash
+	testURIPathNormalize(t, "/xxx/yyy/../", "/xxx/")
+
+	// multi dotdots
+	testURIPathNormalize(t, "/aaa/bbb/ccc/../../ddd", "/aaa/ddd")
+
+	// dotdots separated by other data
+	testURIPathNormalize(t, "/a/b/../c/d/../e/..", "/a/c/")
+
+	// too many dotdots
+	testURIPathNormalize(t, "/aaa/../../../../xxx", "/xxx")
+	testURIPathNormalize(t, "/../../../../../..", "/")
+	testURIPathNormalize(t, "/../../../../../../", "/")
+
+	// encoded dotdots
+	testURIPathNormalize(t, "/aaa%2Fbbb%2F%2E.%2Fxxx", "/aaa/xxx")
+
+	// double slash with dotdots
+	testURIPathNormalize(t, "/aaa////..//b", "/b")
+
+	// fake dotdot
+	testURIPathNormalize(t, "/aaa/..bbb/ccc/..", "/aaa/..bbb/")
+
+	// single dot
+	testURIPathNormalize(t, "/a/./b/././c/./d.html", "/a/b/c/d.html")
+	testURIPathNormalize(t, "./foo/", "/foo/")
+	testURIPathNormalize(t, "./../.././../../aaa/bbb/../../../././../", "/")
+	testURIPathNormalize(t, "./a/./.././../b/./foo.html", "/b/foo.html")
+}
+
+func testURIPathNormalize(t *testing.T, requestURI, expectedPath string) {
+	cleanedPath := CleanPath(requestURI)
+	if cleanedPath != expectedPath {
+		t.Fatalf("Unexpected path %q. Expected %q. requestURI=%q", cleanedPath, expectedPath, requestURI)
+	}
+}

server/version/version.go

@@ -0,0 +1,3 @@
+package version
+
+var Version string = "dev"