279 lines
8.1 KiB
Go
279 lines
8.1 KiB
Go
// Copyright 2019 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package files
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import (
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"context"
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"fmt"
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"net/url"
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"path"
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"strings"
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"code.gitea.io/gitea/models"
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repo_model "code.gitea.io/gitea/models/repo"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/gitrepo"
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"code.gitea.io/gitea/modules/setting"
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api "code.gitea.io/gitea/modules/structs"
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"code.gitea.io/gitea/modules/util"
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)
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// ContentType repo content type
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type ContentType string
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// The string representations of different content types
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const (
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// ContentTypeRegular regular content type (file)
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ContentTypeRegular ContentType = "file"
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// ContentTypeDir dir content type (dir)
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ContentTypeDir ContentType = "dir"
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// ContentLink link content type (symlink)
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ContentTypeLink ContentType = "symlink"
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// ContentTag submodule content type (submodule)
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ContentTypeSubmodule ContentType = "submodule"
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)
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// String gets the string of ContentType
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func (ct *ContentType) String() string {
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return string(*ct)
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}
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// GetContentsOrList gets the meta data of a file's contents (*ContentsResponse) if treePath not a tree
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// directory, otherwise a listing of file contents ([]*ContentsResponse). Ref can be a branch, commit or tag
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func GetContentsOrList(ctx context.Context, repo *repo_model.Repository, treePath, ref string) (any, error) {
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if repo.IsEmpty {
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return make([]any, 0), nil
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}
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if ref == "" {
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ref = repo.DefaultBranch
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}
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origRef := ref
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// Check that the path given in opts.treePath is valid (not a git path)
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cleanTreePath := CleanUploadFileName(treePath)
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if cleanTreePath == "" && treePath != "" {
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return nil, models.ErrFilenameInvalid{
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Path: treePath,
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}
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}
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treePath = cleanTreePath
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gitRepo, closer, err := gitrepo.RepositoryFromContextOrOpen(ctx, repo)
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if err != nil {
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return nil, err
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}
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defer closer.Close()
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// Get the commit object for the ref
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commit, err := gitRepo.GetCommit(ref)
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if err != nil {
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return nil, err
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}
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entry, err := commit.GetTreeEntryByPath(treePath)
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if err != nil {
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return nil, err
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}
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if entry.Type() != "tree" {
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return GetContents(ctx, repo, treePath, origRef, false)
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}
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// We are in a directory, so we return a list of FileContentResponse objects
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var fileList []*api.ContentsResponse
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gitTree, err := commit.SubTree(treePath)
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if err != nil {
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return nil, err
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}
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entries, err := gitTree.ListEntries()
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if err != nil {
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return nil, err
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}
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for _, e := range entries {
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subTreePath := path.Join(treePath, e.Name())
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fileContentResponse, err := GetContents(ctx, repo, subTreePath, origRef, true)
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if err != nil {
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return nil, err
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}
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fileList = append(fileList, fileContentResponse)
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}
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return fileList, nil
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}
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// GetObjectTypeFromTreeEntry check what content is behind it
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func GetObjectTypeFromTreeEntry(entry *git.TreeEntry) ContentType {
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switch {
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case entry.IsDir():
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return ContentTypeDir
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case entry.IsSubModule():
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return ContentTypeSubmodule
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case entry.IsExecutable(), entry.IsRegular():
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return ContentTypeRegular
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case entry.IsLink():
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return ContentTypeLink
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default:
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return ""
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}
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}
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// GetContents gets the meta data on a file's contents. Ref can be a branch, commit or tag
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func GetContents(ctx context.Context, repo *repo_model.Repository, treePath, ref string, forList bool) (*api.ContentsResponse, error) {
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if ref == "" {
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ref = repo.DefaultBranch
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}
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origRef := ref
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// Check that the path given in opts.treePath is valid (not a git path)
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cleanTreePath := CleanUploadFileName(treePath)
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if cleanTreePath == "" && treePath != "" {
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return nil, models.ErrFilenameInvalid{
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Path: treePath,
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}
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}
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treePath = cleanTreePath
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gitRepo, closer, err := gitrepo.RepositoryFromContextOrOpen(ctx, repo)
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if err != nil {
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return nil, err
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}
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defer closer.Close()
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// Get the commit object for the ref
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commit, err := gitRepo.GetCommit(ref)
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if err != nil {
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return nil, err
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}
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commitID := commit.ID.String()
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if len(ref) >= 4 && strings.HasPrefix(commitID, ref) {
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ref = commit.ID.String()
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}
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entry, err := commit.GetTreeEntryByPath(treePath)
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if err != nil {
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return nil, err
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}
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refType := gitRepo.GetRefType(ref)
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if refType == "invalid" {
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return nil, fmt.Errorf("no commit found for the ref [ref: %s]", ref)
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}
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selfURL, err := url.Parse(repo.APIURL() + "/contents/" + util.PathEscapeSegments(treePath) + "?ref=" + url.QueryEscape(origRef))
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if err != nil {
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return nil, err
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}
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selfURLString := selfURL.String()
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err = gitRepo.AddLastCommitCache(repo.GetCommitsCountCacheKey(ref, refType != git.ObjectCommit), repo.FullName(), commitID)
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if err != nil {
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return nil, err
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}
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lastCommit, err := commit.GetCommitByPath(treePath)
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if err != nil {
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return nil, err
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}
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// All content types have these fields in populated
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contentsResponse := &api.ContentsResponse{
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Name: entry.Name(),
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Path: treePath,
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SHA: entry.ID.String(),
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LastCommitSHA: lastCommit.ID.String(),
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Size: entry.Size(),
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URL: &selfURLString,
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Links: &api.FileLinksResponse{
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Self: &selfURLString,
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},
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}
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// Now populate the rest of the ContentsResponse based on entry type
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if entry.IsRegular() || entry.IsExecutable() {
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contentsResponse.Type = string(ContentTypeRegular)
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if blobResponse, err := GetBlobBySHA(ctx, repo, gitRepo, entry.ID.String()); err != nil {
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return nil, err
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} else if !forList {
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// We don't show the content if we are getting a list of FileContentResponses
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contentsResponse.Encoding = &blobResponse.Encoding
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contentsResponse.Content = &blobResponse.Content
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}
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} else if entry.IsDir() {
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contentsResponse.Type = string(ContentTypeDir)
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} else if entry.IsLink() {
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contentsResponse.Type = string(ContentTypeLink)
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// The target of a symlink file is the content of the file
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targetFromContent, err := entry.Blob().GetBlobContent(1024)
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if err != nil {
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return nil, err
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}
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contentsResponse.Target = &targetFromContent
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} else if entry.IsSubModule() {
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contentsResponse.Type = string(ContentTypeSubmodule)
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submodule, err := commit.GetSubModule(treePath)
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if err != nil {
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return nil, err
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}
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if submodule != nil && submodule.URL != "" {
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contentsResponse.SubmoduleGitURL = &submodule.URL
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}
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}
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// Handle links
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if entry.IsRegular() || entry.IsLink() || entry.IsExecutable() {
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downloadURL, err := url.Parse(repo.HTMLURL() + "/raw/" + url.PathEscape(string(refType)) + "/" + util.PathEscapeSegments(ref) + "/" + util.PathEscapeSegments(treePath))
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if err != nil {
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return nil, err
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}
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downloadURLString := downloadURL.String()
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contentsResponse.DownloadURL = &downloadURLString
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}
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if !entry.IsSubModule() {
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htmlURL, err := url.Parse(repo.HTMLURL() + "/src/" + url.PathEscape(string(refType)) + "/" + util.PathEscapeSegments(ref) + "/" + util.PathEscapeSegments(treePath))
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if err != nil {
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return nil, err
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}
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htmlURLString := htmlURL.String()
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contentsResponse.HTMLURL = &htmlURLString
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contentsResponse.Links.HTMLURL = &htmlURLString
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gitURL, err := url.Parse(repo.APIURL() + "/git/blobs/" + url.PathEscape(entry.ID.String()))
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if err != nil {
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return nil, err
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}
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gitURLString := gitURL.String()
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contentsResponse.GitURL = &gitURLString
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contentsResponse.Links.GitURL = &gitURLString
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}
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return contentsResponse, nil
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}
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// GetBlobBySHA get the GitBlobResponse of a repository using a sha hash.
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func GetBlobBySHA(ctx context.Context, repo *repo_model.Repository, gitRepo *git.Repository, sha string) (*api.GitBlobResponse, error) {
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gitBlob, err := gitRepo.GetBlob(sha)
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if err != nil {
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return nil, err
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}
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content := ""
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if gitBlob.Size() <= setting.API.DefaultMaxBlobSize {
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content, err = gitBlob.GetBlobContentBase64()
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if err != nil {
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return nil, err
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}
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}
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return &api.GitBlobResponse{
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SHA: gitBlob.ID.String(),
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URL: repo.APIURL() + "/git/blobs/" + url.PathEscape(gitBlob.ID.String()),
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Size: gitBlob.Size(),
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Encoding: "base64",
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Content: content,
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}, nil
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}
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// TryGetContentLanguage tries to get the (linguist) language of the file content
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func TryGetContentLanguage(gitRepo *git.Repository, commitID, treePath string) (string, error) {
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attribute, err := gitRepo.GitAttributeFirst(commitID, treePath, "linguist-language", "gitlab-language")
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return attribute.Prefix(), err
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}
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