mirror of https://github.com/go-gitea/gitea.git
Attachments: Add extension support, allow all types for releases (#12465)
* Attachments: Add extension support, allow all types for releases - Add support for file extensions, matching the `accept` attribute of `<input type="file">` - Add support for type wildcard mime types, e.g. `image/*` - Create repository.release.ALLOWED_TYPES setting (default unrestricted) - Change default for attachment.ALLOWED_TYPES to a list of extensions - Split out POST /attachments into two endpoints for issue/pr and releases to prevent circumvention of allowed types check Fixes: https://github.com/go-gitea/gitea/pull/10172 Fixes: https://github.com/go-gitea/gitea/issues/7266 Fixes: https://github.com/go-gitea/gitea/pull/12460 Ref: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file#Unique_file_type_specifiers * rename function * extract GET routes out of RepoMustNotBeArchived Co-authored-by: Lauris BH <lauris@nix.lv>pull/13007/head^2
silverwind
4 years ago
committed by
GitHub
parent
67a5573310
commit
cda44750cb
@ -1,46 +0,0 @@
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package upload
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import (
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"fmt"
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"net/http"
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"strings"
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"code.gitea.io/gitea/modules/log"
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)
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// ErrFileTypeForbidden not allowed file type error
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type ErrFileTypeForbidden struct {
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Type string
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}
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// IsErrFileTypeForbidden checks if an error is a ErrFileTypeForbidden.
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func IsErrFileTypeForbidden(err error) bool {
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_, ok := err.(ErrFileTypeForbidden)
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return ok
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}
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func (err ErrFileTypeForbidden) Error() string {
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return fmt.Sprintf("File type is not allowed: %s", err.Type)
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}
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// VerifyAllowedContentType validates a file is allowed to be uploaded.
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func VerifyAllowedContentType(buf []byte, allowedTypes []string) error {
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fileType := http.DetectContentType(buf)
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for _, t := range allowedTypes {
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t := strings.Trim(t, " ")
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if t == "*/*" || t == fileType ||
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// Allow directives after type, like 'text/plain; charset=utf-8'
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strings.HasPrefix(fileType, t+";") {
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return nil
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}
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}
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log.Info("Attachment with type %s blocked from upload", fileType)
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return ErrFileTypeForbidden{Type: fileType}
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}
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@ -1,47 +0,0 @@
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package upload
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import (
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"bytes"
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"compress/gzip"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestUpload(t *testing.T) {
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testContent := []byte(`This is a plain text file.`)
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var b bytes.Buffer
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w := gzip.NewWriter(&b)
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w.Write(testContent)
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w.Close()
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kases := []struct {
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data []byte
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allowedTypes []string
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err error
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}{
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{
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data: testContent,
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allowedTypes: []string{"text/plain"},
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err: nil,
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},
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{
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data: testContent,
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allowedTypes: []string{"application/x-gzip"},
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err: ErrFileTypeForbidden{"text/plain; charset=utf-8"},
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},
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{
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data: b.Bytes(),
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allowedTypes: []string{"application/x-gzip"},
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err: nil,
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},
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}
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for _, kase := range kases {
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assert.Equal(t, kase.err, VerifyAllowedContentType(kase.data, kase.allowedTypes))
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}
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}
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@ -0,0 +1,94 @@
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package upload
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import (
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"net/http"
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"path"
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"regexp"
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"strings"
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"code.gitea.io/gitea/modules/context"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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)
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// ErrFileTypeForbidden not allowed file type error
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type ErrFileTypeForbidden struct {
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Type string
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}
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// IsErrFileTypeForbidden checks if an error is a ErrFileTypeForbidden.
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func IsErrFileTypeForbidden(err error) bool {
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_, ok := err.(ErrFileTypeForbidden)
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return ok
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}
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func (err ErrFileTypeForbidden) Error() string {
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return "This file extension or type is not allowed to be uploaded."
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}
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var mimeTypeSuffixRe = regexp.MustCompile(`;.*$`)
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var wildcardTypeRe = regexp.MustCompile(`^[a-z]+/\*$`)
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// Verify validates whether a file is allowed to be uploaded.
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func Verify(buf []byte, fileName string, allowedTypesStr string) error {
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allowedTypesStr = strings.ReplaceAll(allowedTypesStr, "|", ",") // compat for old config format
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allowedTypes := []string{}
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for _, entry := range strings.Split(allowedTypesStr, ",") {
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entry = strings.ToLower(strings.TrimSpace(entry))
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if entry != "" {
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allowedTypes = append(allowedTypes, entry)
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}
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}
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if len(allowedTypes) == 0 {
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return nil // everything is allowed
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}
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fullMimeType := http.DetectContentType(buf)
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mimeType := strings.TrimSpace(mimeTypeSuffixRe.ReplaceAllString(fullMimeType, ""))
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extension := strings.ToLower(path.Ext(fileName))
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// https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file#Unique_file_type_specifiers
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for _, allowEntry := range allowedTypes {
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if allowEntry == "*/*" {
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return nil // everything allowed
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} else if strings.HasPrefix(allowEntry, ".") && allowEntry == extension {
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return nil // extension is allowed
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} else if mimeType == allowEntry {
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return nil // mime type is allowed
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} else if wildcardTypeRe.MatchString(allowEntry) && strings.HasPrefix(mimeType, allowEntry[:len(allowEntry)-1]) {
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return nil // wildcard match, e.g. image/*
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}
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}
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log.Info("Attachment with type %s blocked from upload", fullMimeType)
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return ErrFileTypeForbidden{Type: fullMimeType}
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}
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// AddUploadContext renders template values for dropzone
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func AddUploadContext(ctx *context.Context, uploadType string) {
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if uploadType == "release" {
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ctx.Data["UploadUrl"] = ctx.Repo.RepoLink + "/releases/attachments"
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ctx.Data["UploadRemoveUrl"] = ctx.Repo.RepoLink + "/releases/attachments/remove"
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ctx.Data["UploadAccepts"] = strings.Replace(setting.Repository.Release.AllowedTypes, "|", ",", -1)
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ctx.Data["UploadMaxFiles"] = setting.Attachment.MaxFiles
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ctx.Data["UploadMaxSize"] = setting.Attachment.MaxSize
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} else if uploadType == "comment" {
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ctx.Data["UploadUrl"] = ctx.Repo.RepoLink + "/issues/attachments"
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ctx.Data["UploadRemoveUrl"] = ctx.Repo.RepoLink + "/issues/attachments/remove"
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ctx.Data["UploadAccepts"] = strings.Replace(setting.Attachment.AllowedTypes, "|", ",", -1)
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ctx.Data["UploadMaxFiles"] = setting.Attachment.MaxFiles
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ctx.Data["UploadMaxSize"] = setting.Attachment.MaxSize
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} else if uploadType == "repo" {
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ctx.Data["UploadUrl"] = ctx.Repo.RepoLink + "/upload-file"
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ctx.Data["UploadRemoveUrl"] = ctx.Repo.RepoLink + "/upload-remove"
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ctx.Data["UploadAccepts"] = strings.Replace(setting.Repository.Upload.AllowedTypes, "|", ",", -1)
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ctx.Data["UploadMaxFiles"] = setting.Repository.Upload.MaxFiles
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ctx.Data["UploadMaxSize"] = setting.Repository.Upload.FileMaxSize
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}
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}
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@ -0,0 +1,195 @@
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package upload
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import (
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"bytes"
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"compress/gzip"
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"testing"
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"github.com/stretchr/testify/assert"
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)
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func TestUpload(t *testing.T) {
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testContent := []byte(`This is a plain text file.`)
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var b bytes.Buffer
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w := gzip.NewWriter(&b)
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w.Write(testContent)
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w.Close()
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kases := []struct {
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data []byte
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fileName string
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allowedTypes string
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err error
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}{
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: "",
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err: nil,
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},
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{
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data: testContent,
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fileName: "dir/test.txt",
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allowedTypes: "",
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err: nil,
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},
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{
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data: testContent,
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fileName: "../../../test.txt",
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allowedTypes: "",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: "",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: ",",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: "|",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: "*/*",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: "*/*,",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: "*/*|",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: "text/plain",
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err: nil,
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},
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{
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data: testContent,
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fileName: "dir/test.txt",
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allowedTypes: "text/plain",
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err: nil,
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},
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{
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data: testContent,
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fileName: "/dir.txt/test.js",
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allowedTypes: ".js",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: " text/plain ",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: ".txt",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: " .txt,.js",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: " .txt|.js",
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err: nil,
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},
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{
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data: testContent,
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fileName: "../../test.txt",
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allowedTypes: " .txt|.js",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: " .txt ,.js ",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: "text/plain, .txt",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: "text/*",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: "text/*,.js",
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err: nil,
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: "text/**",
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err: ErrFileTypeForbidden{"text/plain; charset=utf-8"},
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: "application/x-gzip",
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err: ErrFileTypeForbidden{"text/plain; charset=utf-8"},
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: ".zip",
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err: ErrFileTypeForbidden{"text/plain; charset=utf-8"},
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: ".zip,.txtx",
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err: ErrFileTypeForbidden{"text/plain; charset=utf-8"},
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},
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{
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data: testContent,
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fileName: "test.txt",
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allowedTypes: ".zip|.txtx",
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err: ErrFileTypeForbidden{"text/plain; charset=utf-8"},
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},
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{
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data: b.Bytes(),
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fileName: "test.txt",
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allowedTypes: "application/x-gzip",
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err: nil,
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},
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}
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for _, kase := range kases {
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assert.Equal(t, kase.err, Verify(kase.data, kase.fileName, kase.allowedTypes))
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}
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}
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@ -0,0 +1,13 @@
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<div
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class="ui dropzone"
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id="dropzone"
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data-upload-url="{{.UploadUrl}}"
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data-remove-url="{{.UploadRemoveUrl}}"
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data-accepts="{{.UploadAccepts}}"
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data-max-file="{{.UploadMaxFiles}}"
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data-max-size="{{.UploadMaxSize}}"
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data-default-message="{{.i18n.Tr "dropzone.default_message"}}"
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data-invalid-input-type="{{.i18n.Tr "dropzone.invalid_input_type"}}"
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data-file-too-big="{{.i18n.Tr "dropzone.file_too_big"}}"
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data-remove-file="{{.i18n.Tr "dropzone.remove_file"}}"
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></div>
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