feat: add Seafile driver (#2964)

* feat: add Seafile driver

* docs: add Seafile support

* refactor: optimization

* fix: close redirect on `move` and `rename`

Co-authored-by: Noah Hsu <i@nn.ci>

drivers/seafile/util.go

@@ -0,0 +1,48 @@
+package seafile
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/alist-org/alist/v3/drivers/base"
+)
+
+func (d *Seafile) getToken() error {
+	var authResp AuthTokenResp
+	res, err := base.RestyClient.R().
+		SetResult(&authResp).
+		SetFormData(map[string]string{
+			"username": d.UserName,
+			"password": d.Password,
+		}).
+		Post(d.Address + "/api2/auth-token/")
+	if err != nil {
+		return err
+	}
+	if res.StatusCode() >= 400 {
+		return fmt.Errorf("get token failed: %s", res.String())
+	}
+	d.authorization = fmt.Sprintf("Token %s", authResp.Token)
+	return nil
+}
+
+func (d *Seafile) request(method string, pathname string, callback base.ReqCallback, noRedirect ...bool) ([]byte, error) {
+	full := pathname
+	if !strings.HasPrefix(pathname, "http") {
+		full = d.Address + pathname
+	}
+	req := base.RestyClient.R()
+	if len(noRedirect) > 0 && noRedirect[0] {
+		req = base.NoRedirectClient.R()
+	}
+	req.SetHeader("Authorization", d.authorization)
+	callback(req)
+	res, err := req.Execute(method, full)
+	if err != nil {
+		return nil, err
+	}
+	if res.StatusCode() >= 400 {
+		return nil, fmt.Errorf("request failed: %s", res.String())
+	}
+	return res.Body(), nil
+}