gitea/routers/repo/compare.go
zeripath 90919bb37e
Show Signer in commit lists and add basic trust (#10425)
* Show Signer in commit lists and add basic trust

Show the avatar of the signer in the commit list pages as we do not
enforce that the signer is an author or committer. This makes it
clearer who has signed the commit.

Also display commits signed by non-members differently from
members and in particular make it clear when a non-member signer
is different from the committer to help reduce the risk of
spoofing.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* ensure orange text and background is available

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Update gpg_key.go

* Update models/gpg_key.go

* Apply suggestions from code review

* Require team collaborators to have access to UnitTypeCode

* as per @6543

* fix position of sha as per @silverwind

* as per @guillep2k
2020-02-27 16:20:55 -03:00

549 lines
16 KiB
Go

// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package repo
import (
"bufio"
"fmt"
"html"
"path"
"path/filepath"
"strings"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/context"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/highlight"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/services/gitdiff"
)
const (
tplCompare base.TplName = "repo/diff/compare"
tplBlobExcerpt base.TplName = "repo/diff/blob_excerpt"
)
// setPathsCompareContext sets context data for source and raw paths
func setPathsCompareContext(ctx *context.Context, base *git.Commit, head *git.Commit, headTarget string) {
sourcePath := setting.AppSubURL + "/%s/src/commit/%s"
rawPath := setting.AppSubURL + "/%s/raw/commit/%s"
ctx.Data["SourcePath"] = fmt.Sprintf(sourcePath, headTarget, head.ID)
ctx.Data["RawPath"] = fmt.Sprintf(rawPath, headTarget, head.ID)
if base != nil {
baseTarget := path.Join(ctx.Repo.Owner.Name, ctx.Repo.Repository.Name)
ctx.Data["BeforeSourcePath"] = fmt.Sprintf(sourcePath, baseTarget, base.ID)
ctx.Data["BeforeRawPath"] = fmt.Sprintf(rawPath, baseTarget, base.ID)
}
}
// setImageCompareContext sets context data that is required by image compare template
func setImageCompareContext(ctx *context.Context, base *git.Commit, head *git.Commit) {
ctx.Data["IsImageFileInHead"] = head.IsImageFile
ctx.Data["IsImageFileInBase"] = base.IsImageFile
ctx.Data["ImageInfoBase"] = func(name string) *git.ImageMetaData {
if base == nil {
return nil
}
result, err := base.ImageInfo(name)
if err != nil {
log.Error("ImageInfo failed: %v", err)
return nil
}
return result
}
ctx.Data["ImageInfo"] = func(name string) *git.ImageMetaData {
result, err := head.ImageInfo(name)
if err != nil {
log.Error("ImageInfo failed: %v", err)
return nil
}
return result
}
}
// ParseCompareInfo parse compare info between two commit for preparing comparing references
func ParseCompareInfo(ctx *context.Context) (*models.User, *models.Repository, *git.Repository, *git.CompareInfo, string, string) {
baseRepo := ctx.Repo.Repository
// Get compared branches information
// format: <base branch>...[<head repo>:]<head branch>
// base<-head: master...head:feature
// same repo: master...feature
var (
headUser *models.User
headBranch string
isSameRepo bool
infoPath string
err error
)
infoPath = ctx.Params("*")
infos := strings.Split(infoPath, "...")
if len(infos) != 2 {
log.Trace("ParseCompareInfo[%d]: not enough compared branches information %s", baseRepo.ID, infos)
ctx.NotFound("CompareAndPullRequest", nil)
return nil, nil, nil, nil, "", ""
}
baseBranch := infos[0]
ctx.Data["BaseBranch"] = baseBranch
// If there is no head repository, it means compare between same repository.
headInfos := strings.Split(infos[1], ":")
if len(headInfos) == 1 {
isSameRepo = true
headUser = ctx.Repo.Owner
headBranch = headInfos[0]
} else if len(headInfos) == 2 {
headUser, err = models.GetUserByName(headInfos[0])
if err != nil {
if models.IsErrUserNotExist(err) {
ctx.NotFound("GetUserByName", nil)
} else {
ctx.ServerError("GetUserByName", err)
}
return nil, nil, nil, nil, "", ""
}
headBranch = headInfos[1]
isSameRepo = headUser.ID == ctx.Repo.Owner.ID
} else {
ctx.NotFound("CompareAndPullRequest", nil)
return nil, nil, nil, nil, "", ""
}
ctx.Data["HeadUser"] = headUser
ctx.Data["HeadBranch"] = headBranch
ctx.Repo.PullRequest.SameRepo = isSameRepo
// Check if base branch is valid.
baseIsCommit := ctx.Repo.GitRepo.IsCommitExist(baseBranch)
baseIsBranch := ctx.Repo.GitRepo.IsBranchExist(baseBranch)
baseIsTag := ctx.Repo.GitRepo.IsTagExist(baseBranch)
if !baseIsCommit && !baseIsBranch && !baseIsTag {
// Check if baseBranch is short sha commit hash
if baseCommit, _ := ctx.Repo.GitRepo.GetCommit(baseBranch); baseCommit != nil {
baseBranch = baseCommit.ID.String()
ctx.Data["BaseBranch"] = baseBranch
baseIsCommit = true
} else {
ctx.NotFound("IsRefExist", nil)
return nil, nil, nil, nil, "", ""
}
}
ctx.Data["BaseIsCommit"] = baseIsCommit
ctx.Data["BaseIsBranch"] = baseIsBranch
ctx.Data["BaseIsTag"] = baseIsTag
// Check if current user has fork of repository or in the same repository.
headRepo, has := models.HasForkedRepo(headUser.ID, baseRepo.ID)
if !has && !isSameRepo {
ctx.Data["PageIsComparePull"] = false
}
var headGitRepo *git.Repository
if isSameRepo {
headRepo = ctx.Repo.Repository
headGitRepo = ctx.Repo.GitRepo
ctx.Data["BaseName"] = headUser.Name
} else {
headGitRepo, err = git.OpenRepository(models.RepoPath(headUser.Name, headRepo.Name))
ctx.Data["BaseName"] = baseRepo.OwnerName
if err != nil {
ctx.ServerError("OpenRepository", err)
return nil, nil, nil, nil, "", ""
}
defer headGitRepo.Close()
}
// user should have permission to read baseRepo's codes and pulls, NOT headRepo's
permBase, err := models.GetUserRepoPermission(baseRepo, ctx.User)
if err != nil {
ctx.ServerError("GetUserRepoPermission", err)
return nil, nil, nil, nil, "", ""
}
if !permBase.CanRead(models.UnitTypeCode) {
if log.IsTrace() {
log.Trace("Permission Denied: User: %-v cannot read code in Repo: %-v\nUser in baseRepo has Permissions: %-+v",
ctx.User,
baseRepo,
permBase)
}
ctx.NotFound("ParseCompareInfo", nil)
return nil, nil, nil, nil, "", ""
}
if !isSameRepo {
// user should have permission to read headrepo's codes
permHead, err := models.GetUserRepoPermission(headRepo, ctx.User)
if err != nil {
ctx.ServerError("GetUserRepoPermission", err)
return nil, nil, nil, nil, "", ""
}
if !permHead.CanRead(models.UnitTypeCode) {
if log.IsTrace() {
log.Trace("Permission Denied: User: %-v cannot read code in Repo: %-v\nUser in headRepo has Permissions: %-+v",
ctx.User,
headRepo,
permHead)
}
ctx.NotFound("ParseCompareInfo", nil)
return nil, nil, nil, nil, "", ""
}
}
// Check if head branch is valid.
headIsCommit := headGitRepo.IsCommitExist(headBranch)
headIsBranch := headGitRepo.IsBranchExist(headBranch)
headIsTag := headGitRepo.IsTagExist(headBranch)
if !headIsCommit && !headIsBranch && !headIsTag {
// Check if headBranch is short sha commit hash
if headCommit, _ := headGitRepo.GetCommit(headBranch); headCommit != nil {
headBranch = headCommit.ID.String()
ctx.Data["HeadBranch"] = headBranch
headIsCommit = true
} else {
ctx.NotFound("IsRefExist", nil)
return nil, nil, nil, nil, "", ""
}
}
ctx.Data["HeadIsCommit"] = headIsCommit
ctx.Data["HeadIsBranch"] = headIsBranch
ctx.Data["HeadIsTag"] = headIsTag
// Treat as pull request if both references are branches
if ctx.Data["PageIsComparePull"] == nil {
ctx.Data["PageIsComparePull"] = headIsBranch && baseIsBranch
}
if ctx.Data["PageIsComparePull"] == true && !permBase.CanReadIssuesOrPulls(true) {
if log.IsTrace() {
log.Trace("Permission Denied: User: %-v cannot create/read pull requests in Repo: %-v\nUser in baseRepo has Permissions: %-+v",
ctx.User,
baseRepo,
permBase)
}
ctx.NotFound("ParseCompareInfo", nil)
return nil, nil, nil, nil, "", ""
}
compareInfo, err := headGitRepo.GetCompareInfo(baseRepo.RepoPath(), baseBranch, headBranch)
if err != nil {
ctx.ServerError("GetCompareInfo", err)
return nil, nil, nil, nil, "", ""
}
ctx.Data["BeforeCommitID"] = compareInfo.MergeBase
return headUser, headRepo, headGitRepo, compareInfo, baseBranch, headBranch
}
// PrepareCompareDiff renders compare diff page
func PrepareCompareDiff(
ctx *context.Context,
headUser *models.User,
headRepo *models.Repository,
headGitRepo *git.Repository,
compareInfo *git.CompareInfo,
baseBranch, headBranch string) bool {
var (
repo = ctx.Repo.Repository
err error
title string
)
// Get diff information.
ctx.Data["CommitRepoLink"] = headRepo.Link()
headCommitID := headBranch
if ctx.Data["HeadIsCommit"] == false {
if ctx.Data["HeadIsTag"] == true {
headCommitID, err = headGitRepo.GetTagCommitID(headBranch)
} else {
headCommitID, err = headGitRepo.GetBranchCommitID(headBranch)
}
if err != nil {
ctx.ServerError("GetRefCommitID", err)
return false
}
}
ctx.Data["AfterCommitID"] = headCommitID
if headCommitID == compareInfo.MergeBase {
ctx.Data["IsNothingToCompare"] = true
return true
}
diff, err := gitdiff.GetDiffRange(models.RepoPath(headUser.Name, headRepo.Name),
compareInfo.MergeBase, headCommitID, setting.Git.MaxGitDiffLines,
setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles)
if err != nil {
ctx.ServerError("GetDiffRange", err)
return false
}
ctx.Data["Diff"] = diff
ctx.Data["DiffNotAvailable"] = diff.NumFiles() == 0
headCommit, err := headGitRepo.GetCommit(headCommitID)
if err != nil {
ctx.ServerError("GetCommit", err)
return false
}
baseGitRepo := ctx.Repo.GitRepo
baseCommitID := baseBranch
if ctx.Data["BaseIsCommit"] == false {
if ctx.Data["BaseIsTag"] == true {
baseCommitID, err = baseGitRepo.GetTagCommitID(baseBranch)
} else {
baseCommitID, err = baseGitRepo.GetBranchCommitID(baseBranch)
}
if err != nil {
ctx.ServerError("GetRefCommitID", err)
return false
}
}
baseCommit, err := baseGitRepo.GetCommit(baseCommitID)
if err != nil {
ctx.ServerError("GetCommit", err)
return false
}
compareInfo.Commits = models.ValidateCommitsWithEmails(compareInfo.Commits)
compareInfo.Commits = models.ParseCommitsWithSignature(compareInfo.Commits, headRepo)
compareInfo.Commits = models.ParseCommitsWithStatus(compareInfo.Commits, headRepo)
ctx.Data["Commits"] = compareInfo.Commits
ctx.Data["CommitCount"] = compareInfo.Commits.Len()
if ctx.Data["CommitCount"] == 0 {
ctx.Data["PageIsComparePull"] = false
}
if compareInfo.Commits.Len() == 1 {
c := compareInfo.Commits.Front().Value.(models.SignCommitWithStatuses)
title = strings.TrimSpace(c.UserCommit.Summary())
body := strings.Split(strings.TrimSpace(c.UserCommit.Message()), "\n")
if len(body) > 1 {
ctx.Data["content"] = strings.Join(body[1:], "\n")
}
} else {
title = headBranch
}
ctx.Data["title"] = title
ctx.Data["Username"] = headUser.Name
ctx.Data["Reponame"] = headRepo.Name
setImageCompareContext(ctx, baseCommit, headCommit)
headTarget := path.Join(headUser.Name, repo.Name)
setPathsCompareContext(ctx, baseCommit, headCommit, headTarget)
return false
}
// parseBaseRepoInfo parse base repository if current repo is forked.
// The "base" here means the repository where current repo forks from,
// not the repository fetch from current URL.
func parseBaseRepoInfo(ctx *context.Context, repo *models.Repository) error {
if !repo.IsFork {
return nil
}
if err := repo.GetBaseRepo(); err != nil {
return err
}
baseGitRepo, err := git.OpenRepository(repo.BaseRepo.RepoPath())
if err != nil {
return err
}
defer baseGitRepo.Close()
ctx.Data["BaseRepoBranches"], err = baseGitRepo.GetBranches()
if err != nil {
return err
}
return nil
}
// CompareDiff show different from one commit to another commit
func CompareDiff(ctx *context.Context) {
headUser, headRepo, headGitRepo, compareInfo, baseBranch, headBranch := ParseCompareInfo(ctx)
if ctx.Written() {
return
}
defer headGitRepo.Close()
var err error
if err = parseBaseRepoInfo(ctx, headRepo); err != nil {
ctx.ServerError("parseBaseRepoInfo", err)
return
}
nothingToCompare := PrepareCompareDiff(ctx, headUser, headRepo, headGitRepo, compareInfo, baseBranch, headBranch)
if ctx.Written() {
return
}
if ctx.Data["PageIsComparePull"] == true {
headBranches, err := headGitRepo.GetBranches()
if err != nil {
ctx.ServerError("GetBranches", err)
return
}
ctx.Data["HeadBranches"] = headBranches
pr, err := models.GetUnmergedPullRequest(headRepo.ID, ctx.Repo.Repository.ID, headBranch, baseBranch)
if err != nil {
if !models.IsErrPullRequestNotExist(err) {
ctx.ServerError("GetUnmergedPullRequest", err)
return
}
} else {
ctx.Data["HasPullRequest"] = true
ctx.Data["PullRequest"] = pr
ctx.HTML(200, tplCompareDiff)
return
}
if !nothingToCompare {
// Setup information for new form.
RetrieveRepoMetas(ctx, ctx.Repo.Repository, true)
if ctx.Written() {
return
}
}
}
beforeCommitID := ctx.Data["BeforeCommitID"].(string)
afterCommitID := ctx.Data["AfterCommitID"].(string)
if ctx.Data["Assignees"], err = ctx.Repo.Repository.GetAssignees(); err != nil {
ctx.ServerError("GetAssignees", err)
return
}
ctx.Data["Title"] = "Comparing " + base.ShortSha(beforeCommitID) + "..." + base.ShortSha(afterCommitID)
ctx.Data["IsRepoToolbarCommits"] = true
ctx.Data["IsDiffCompare"] = true
ctx.Data["RequireHighlightJS"] = true
ctx.Data["RequireTribute"] = true
ctx.Data["RequireSimpleMDE"] = true
ctx.Data["PullRequestWorkInProgressPrefixes"] = setting.Repository.PullRequest.WorkInProgressPrefixes
setTemplateIfExists(ctx, pullRequestTemplateKey, pullRequestTemplateCandidates)
renderAttachmentSettings(ctx)
ctx.HTML(200, tplCompare)
}
// ExcerptBlob render blob excerpt contents
func ExcerptBlob(ctx *context.Context) {
commitID := ctx.Params("sha")
lastLeft := ctx.QueryInt("last_left")
lastRight := ctx.QueryInt("last_right")
idxLeft := ctx.QueryInt("left")
idxRight := ctx.QueryInt("right")
leftHunkSize := ctx.QueryInt("left_hunk_size")
rightHunkSize := ctx.QueryInt("right_hunk_size")
anchor := ctx.Query("anchor")
direction := ctx.Query("direction")
filePath := ctx.Query("path")
gitRepo := ctx.Repo.GitRepo
chunkSize := gitdiff.BlobExceprtChunkSize
commit, err := gitRepo.GetCommit(commitID)
if err != nil {
ctx.Error(500, "GetCommit")
return
}
section := &gitdiff.DiffSection{
Name: filePath,
}
if direction == "up" && (idxLeft-lastLeft) > chunkSize {
idxLeft -= chunkSize
idxRight -= chunkSize
leftHunkSize += chunkSize
rightHunkSize += chunkSize
section.Lines, err = getExcerptLines(commit, filePath, idxLeft-1, idxRight-1, chunkSize)
} else if direction == "down" && (idxLeft-lastLeft) > chunkSize {
section.Lines, err = getExcerptLines(commit, filePath, lastLeft, lastRight, chunkSize)
lastLeft += chunkSize
lastRight += chunkSize
} else {
section.Lines, err = getExcerptLines(commit, filePath, lastLeft, lastRight, idxRight-lastRight-1)
leftHunkSize = 0
rightHunkSize = 0
idxLeft = lastLeft
idxRight = lastRight
}
if err != nil {
ctx.Error(500, "getExcerptLines")
return
}
if idxRight > lastRight {
lineText := " "
if rightHunkSize > 0 || leftHunkSize > 0 {
lineText = fmt.Sprintf("@@ -%d,%d +%d,%d @@\n", idxLeft, leftHunkSize, idxRight, rightHunkSize)
}
lineText = html.EscapeString(lineText)
lineSection := &gitdiff.DiffLine{
Type: gitdiff.DiffLineSection,
Content: lineText,
SectionInfo: &gitdiff.DiffLineSectionInfo{
Path: filePath,
LastLeftIdx: lastLeft,
LastRightIdx: lastRight,
LeftIdx: idxLeft,
RightIdx: idxRight,
LeftHunkSize: leftHunkSize,
RightHunkSize: rightHunkSize,
}}
if direction == "up" {
section.Lines = append([]*gitdiff.DiffLine{lineSection}, section.Lines...)
} else if direction == "down" {
section.Lines = append(section.Lines, lineSection)
}
}
ctx.Data["section"] = section
ctx.Data["fileName"] = filePath
ctx.Data["highlightClass"] = highlight.FileNameToHighlightClass(filepath.Base(filePath))
ctx.Data["AfterCommitID"] = commitID
ctx.Data["Anchor"] = anchor
ctx.HTML(200, tplBlobExcerpt)
}
func getExcerptLines(commit *git.Commit, filePath string, idxLeft int, idxRight int, chunkSize int) ([]*gitdiff.DiffLine, error) {
blob, err := commit.Tree.GetBlobByPath(filePath)
if err != nil {
return nil, err
}
reader, err := blob.DataAsync()
if err != nil {
return nil, err
}
defer reader.Close()
scanner := bufio.NewScanner(reader)
var diffLines []*gitdiff.DiffLine
for line := 0; line < idxRight+chunkSize; line++ {
if ok := scanner.Scan(); !ok {
break
}
if line < idxRight {
continue
}
lineText := scanner.Text()
diffLine := &gitdiff.DiffLine{
LeftIdx: idxLeft + (line - idxRight) + 1,
RightIdx: line + 1,
Type: gitdiff.DiffLinePlain,
Content: " " + lineText,
}
diffLines = append(diffLines, diffLine)
}
return diffLines, nil
}