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Fix panic in storageHandler (#27446) #27479

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merged 1 commit into from
Oct 6, 2023
Merged

Fix panic in storageHandler (#27446) #27479

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101 changes: 50 additions & 51 deletions routers/web/base.go
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Original file line number Diff line number Diff line change
Expand Up @@ -19,81 +19,80 @@ import (
"code.gitea.io/gitea/modules/web/routing"
)

func storageHandler(storageSetting *setting.Storage, prefix string, objStore storage.ObjectStorage) func(next http.Handler) http.Handler {
func storageHandler(storageSetting *setting.Storage, prefix string, objStore storage.ObjectStorage) http.HandlerFunc {
prefix = strings.Trim(prefix, "/")
funcInfo := routing.GetFuncInfo(storageHandler, prefix)
return func(next http.Handler) http.Handler {
if storageSetting.MinioConfig.ServeDirect {
return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
if req.Method != "GET" && req.Method != "HEAD" {
next.ServeHTTP(w, req)
return
}

if !strings.HasPrefix(req.URL.Path, "/"+prefix+"/") {
next.ServeHTTP(w, req)
return
}
routing.UpdateFuncInfo(req.Context(), funcInfo)

rPath := strings.TrimPrefix(req.URL.Path, "/"+prefix+"/")
rPath = util.PathJoinRelX(rPath)

u, err := objStore.URL(rPath, path.Base(rPath))
if err != nil {
if os.IsNotExist(err) || errors.Is(err, os.ErrNotExist) {
log.Warn("Unable to find %s %s", prefix, rPath)
http.Error(w, "file not found", http.StatusNotFound)
return
}
log.Error("Error whilst getting URL for %s %s. Error: %v", prefix, rPath, err)
http.Error(w, fmt.Sprintf("Error whilst getting URL for %s %s", prefix, rPath), http.StatusInternalServerError)
return
}

http.Redirect(w, req, u.String(), http.StatusTemporaryRedirect)
})
}

if storageSetting.MinioConfig.ServeDirect {
return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
if req.Method != "GET" && req.Method != "HEAD" {
next.ServeHTTP(w, req)
http.Error(w, http.StatusText(http.StatusMethodNotAllowed), http.StatusMethodNotAllowed)
return
}

if !strings.HasPrefix(req.URL.Path, "/"+prefix+"/") {
next.ServeHTTP(w, req)
http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
return
}
routing.UpdateFuncInfo(req.Context(), funcInfo)

rPath := strings.TrimPrefix(req.URL.Path, "/"+prefix+"/")
rPath = util.PathJoinRelX(rPath)
if rPath == "" || rPath == "." {
http.Error(w, "file not found", http.StatusNotFound)
return
}

fi, err := objStore.Stat(rPath)
u, err := objStore.URL(rPath, path.Base(rPath))
if err != nil {
if os.IsNotExist(err) || errors.Is(err, os.ErrNotExist) {
log.Warn("Unable to find %s %s", prefix, rPath)
http.Error(w, "file not found", http.StatusNotFound)
http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
return
}
log.Error("Error whilst opening %s %s. Error: %v", prefix, rPath, err)
http.Error(w, fmt.Sprintf("Error whilst opening %s %s", prefix, rPath), http.StatusInternalServerError)
log.Error("Error whilst getting URL for %s %s. Error: %v", prefix, rPath, err)
http.Error(w, fmt.Sprintf("Error whilst getting URL for %s %s", prefix, rPath), http.StatusInternalServerError)
return
}

fr, err := objStore.Open(rPath)
if err != nil {
log.Error("Error whilst opening %s %s. Error: %v", prefix, rPath, err)
http.Error(w, fmt.Sprintf("Error whilst opening %s %s", prefix, rPath), http.StatusInternalServerError)
return
}
defer fr.Close()
httpcache.ServeContentWithCacheControl(w, req, path.Base(rPath), fi.ModTime(), fr)
http.Redirect(w, req, u.String(), http.StatusTemporaryRedirect)
})
}

return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
if req.Method != "GET" && req.Method != "HEAD" {
http.Error(w, http.StatusText(http.StatusMethodNotAllowed), http.StatusMethodNotAllowed)
return
}

if !strings.HasPrefix(req.URL.Path, "/"+prefix+"/") {
http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
return
}
routing.UpdateFuncInfo(req.Context(), funcInfo)

rPath := strings.TrimPrefix(req.URL.Path, "/"+prefix+"/")
rPath = util.PathJoinRelX(rPath)
if rPath == "" || rPath == "." {
http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
return
}

fi, err := objStore.Stat(rPath)
if err != nil {
if os.IsNotExist(err) || errors.Is(err, os.ErrNotExist) {
log.Warn("Unable to find %s %s", prefix, rPath)
http.Error(w, http.StatusText(http.StatusNotFound), http.StatusNotFound)
return
}
log.Error("Error whilst opening %s %s. Error: %v", prefix, rPath, err)
http.Error(w, fmt.Sprintf("Error whilst opening %s %s", prefix, rPath), http.StatusInternalServerError)
return
}

fr, err := objStore.Open(rPath)
if err != nil {
log.Error("Error whilst opening %s %s. Error: %v", prefix, rPath, err)
http.Error(w, fmt.Sprintf("Error whilst opening %s %s", prefix, rPath), http.StatusInternalServerError)
return
}
defer fr.Close()
httpcache.ServeContentWithCacheControl(w, req, path.Base(rPath), fi.ModTime(), fr)
})
}