102 lines
2.5 KiB
Go
102 lines
2.5 KiB
Go
package controllers
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import (
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"fmt"
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"github.com/Xhofe/alist/conf"
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"github.com/Xhofe/alist/drivers/base"
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"github.com/Xhofe/alist/drivers/operate"
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"github.com/Xhofe/alist/server/common"
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"github.com/Xhofe/alist/utils"
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"github.com/gin-gonic/gin"
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"github.com/go-resty/resty/v2"
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log "github.com/sirupsen/logrus"
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"path/filepath"
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"strings"
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)
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func Proxy(c *gin.Context) {
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rawPath := c.Param("path")
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rawPath = utils.ParsePath(rawPath)
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log.Debugf("proxy: %s", rawPath)
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account, path, driver, err := common.ParsePath(rawPath)
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if err != nil {
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common.ErrorResp(c, err, 500)
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return
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}
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// 只有以下几种情况允许中转：
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// 1. 账号开启中转
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// 2. driver只能中转
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// 3. 是文本类型文件
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// 4. 开启webdav中转（需要验证sign）
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if !account.Proxy && !driver.Config().OnlyProxy &&
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utils.GetFileType(filepath.Ext(rawPath)) != conf.TEXT &&
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!utils.IsContain(conf.DProxyTypes, utils.Ext(rawPath)) {
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// 只开启了webdav中转，验证sign
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ok := false
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if account.WebdavProxy {
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_, ok = c.Get("sign")
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}
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if !ok {
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common.ErrorStrResp(c, fmt.Sprintf("[%s] not allowed proxy", account.Name), 403)
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return
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}
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}
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// 中转时有中转机器使用中转机器，若携带标志位则表明不能再走中转机器了
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if account.DownProxyUrl != "" && c.Query("d") != "1" {
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name := utils.Base(rawPath)
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link := fmt.Sprintf("%s%s?sign=%s", strings.Split(account.DownProxyUrl, "\n")[0], rawPath, utils.SignWithToken(name, conf.Token))
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c.Redirect(302, link)
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return
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}
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// 检查文件
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file, err := operate.File(driver, account, path)
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if err != nil {
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common.ErrorResp(c, err, 500)
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return
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}
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// 对于中转，不需要重设IP
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link, err := driver.Link(base.Args{Path: path}, account)
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if err != nil {
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common.ErrorResp(c, err, 500)
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return
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}
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err = common.Proxy(c.Writer, c.Request, link, file)
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log.Debugln("web proxy error:", err)
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if err != nil {
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common.ErrorResp(c, err, 500)
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}
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}
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var client *resty.Client
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func init() {
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client = resty.New()
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client.SetRetryCount(3).SetTimeout(base.DefaultTimeout)
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}
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func Text(c *gin.Context, link *base.Link) {
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req := client.R()
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if link.Headers != nil {
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for _, header := range link.Headers {
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req.SetHeader(header.Name, header.Value)
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}
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}
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res, err := req.Get(link.Url)
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if err != nil {
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common.ErrorResp(c, err, 500)
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return
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}
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text := res.String()
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t := utils.GetStrCoding(res.Body())
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log.Debugf("text type: %s", t)
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if t != utils.UTF8 {
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body, err := utils.GbkToUtf8(res.Body())
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if err != nil {
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common.ErrorResp(c, err, 500)
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return
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}
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text = string(body)
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}
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c.String(200, text)
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}
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