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package middlewares
import (
"strings"
"github.com/alist-org/alist/v3/internal/conf"
"github.com/alist-org/alist/v3/internal/setting"
"github.com/alist-org/alist/v3/internal/errs"
"github.com/alist-org/alist/v3/internal/model"
"github.com/alist-org/alist/v3/internal/op"
"github.com/alist-org/alist/v3/internal/sign"
"github.com/alist-org/alist/v3/pkg/utils"
"github.com/alist-org/alist/v3/server/common"
"github.com/gin-gonic/gin"
"github.com/pkg/errors"
)
func Down(c *gin.Context) {
rawPath := parsePath(c.Param("path"))
c.Set("path", rawPath)
meta, err := op.GetNearestMeta(rawPath)
if err != nil {
if !errors.Is(errors.Cause(err), errs.MetaNotFound) {
common.ErrorResp(c, err, 500, true)
return
}
}
c.Set("meta", meta)
// verify sign
if needSign(meta, rawPath) {
s := c.Query("sign")
err = sign.Verify(rawPath, strings.TrimSuffix(s, "/"))
if err != nil {
common.ErrorResp(c, err, 401)
c.Abort()
return
}
}
c.Next()
}
// TODO: implement
// path maybe contains # ? etc.
func parsePath(path string) string {
return utils.FixAndCleanPath(path)
}
func needSign(meta *model.Meta, path string) bool {
if setting.GetBool(conf.SignAll) {
return true
}
if common.IsStorageSignEnabled(path) {
return true
}
if meta == nil || meta.Password == "" {
return false
}
if !meta.PSub && path != meta.Path {
return false
}
return true
}
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