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https://codeberg.org/forgejo/forgejo.git
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6bc3079c00
This PR follows #21535 (and replace #22592) ## Review without space diff https://github.com/go-gitea/gitea/pull/22678/files?diff=split&w=1 ## Purpose of this PR 1. Make git module command completely safe (risky user inputs won't be passed as argument option anymore) 2. Avoid low-level mistakes like https://github.com/go-gitea/gitea/pull/22098#discussion_r1045234918 3. Remove deprecated and dirty `CmdArgCheck` function, hide the `CmdArg` type 4. Simplify code when using git command ## The main idea of this PR * Move the `git.CmdArg` to the `internal` package, then no other package except `git` could use it. Then developers could never do `AddArguments(git.CmdArg(userInput))` any more. * Introduce `git.ToTrustedCmdArgs`, it's for user-provided and already trusted arguments. It's only used in a few cases, for example: use git arguments from config file, help unit test with some arguments. * Introduce `AddOptionValues` and `AddOptionFormat`, they make code more clear and simple: * Before: `AddArguments("-m").AddDynamicArguments(message)` * After: `AddOptionValues("-m", message)` * - * Before: `AddArguments(git.CmdArg(fmt.Sprintf("--author='%s <%s>'", sig.Name, sig.Email)))` * After: `AddOptionFormat("--author='%s <%s>'", sig.Name, sig.Email)` ## FAQ ### Why these changes were not done in #21535 ? #21535 is mainly a search&replace, it did its best to not change too much logic. Making the framework better needs a lot of changes, so this separate PR is needed as the second step. ### The naming of `AddOptionXxx` According to git's manual, the `--xxx` part is called `option`. ### How can it guarantee that `internal.CmdArg` won't be not misused? Go's specification guarantees that. Trying to access other package's internal package causes compilation error. And, `golangci-lint` also denies the git/internal package. Only the `git/command.go` can use it carefully. ### There is still a `ToTrustedCmdArgs`, will it still allow developers to make mistakes and pass untrusted arguments? Generally speaking, no. Because when using `ToTrustedCmdArgs`, the code will be very complex (see the changes for examples). Then developers and reviewers can know that something might be unreasonable. ### Why there was a `CmdArgCheck` and why it's removed? At the moment of #21535, to reduce unnecessary changes, `CmdArgCheck` was introduced as a hacky patch. Now, almost all code could be written as `cmd := NewCommand(); cmd.AddXxx(...)`, then there is no need for `CmdArgCheck` anymore. ### Why many codes for `signArg == ""` is deleted? Because in the old code, `signArg` could never be empty string, it's either `-S[key-id]` or `--no-gpg-sign`. So the `signArg == ""` is just dead code. --------- Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
116 lines
2.7 KiB
Go
116 lines
2.7 KiB
Go
// Copyright 2016 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package gitgraph
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import (
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"bufio"
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"bytes"
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"context"
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"os"
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"strings"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/setting"
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)
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// GetCommitGraph return a list of commit (GraphItems) from all branches
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func GetCommitGraph(r *git.Repository, page, maxAllowedColors int, hidePRRefs bool, branches, files []string) (*Graph, error) {
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format := "DATA:%D|%H|%ad|%h|%s"
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if page == 0 {
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page = 1
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}
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graphCmd := git.NewCommand(r.Ctx, "log", "--graph", "--date-order", "--decorate=full")
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if hidePRRefs {
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graphCmd.AddArguments("--exclude=" + git.PullPrefix + "*")
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}
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if len(branches) == 0 {
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graphCmd.AddArguments("--all")
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}
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graphCmd.AddArguments("-C", "-M", "--date=iso").
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AddOptionFormat("-n %d", setting.UI.GraphMaxCommitNum*page).
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AddOptionFormat("--pretty=format:%s", format)
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if len(branches) > 0 {
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graphCmd.AddDynamicArguments(branches...)
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}
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if len(files) > 0 {
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graphCmd.AddDashesAndList(files...)
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}
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graph := NewGraph()
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stderr := new(strings.Builder)
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stdoutReader, stdoutWriter, err := os.Pipe()
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if err != nil {
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return nil, err
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}
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commitsToSkip := setting.UI.GraphMaxCommitNum * (page - 1)
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scanner := bufio.NewScanner(stdoutReader)
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if err := graphCmd.Run(&git.RunOpts{
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Dir: r.Path,
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Stdout: stdoutWriter,
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Stderr: stderr,
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PipelineFunc: func(ctx context.Context, cancel context.CancelFunc) error {
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_ = stdoutWriter.Close()
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defer stdoutReader.Close()
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parser := &Parser{}
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parser.firstInUse = -1
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parser.maxAllowedColors = maxAllowedColors
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if maxAllowedColors > 0 {
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parser.availableColors = make([]int, maxAllowedColors)
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for i := range parser.availableColors {
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parser.availableColors[i] = i + 1
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}
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} else {
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parser.availableColors = []int{1, 2}
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}
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for commitsToSkip > 0 && scanner.Scan() {
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line := scanner.Bytes()
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dataIdx := bytes.Index(line, []byte("DATA:"))
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if dataIdx < 0 {
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dataIdx = len(line)
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}
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starIdx := bytes.IndexByte(line, '*')
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if starIdx >= 0 && starIdx < dataIdx {
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commitsToSkip--
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}
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parser.ParseGlyphs(line[:dataIdx])
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}
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row := 0
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// Skip initial non-commit lines
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for scanner.Scan() {
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line := scanner.Bytes()
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if bytes.IndexByte(line, '*') >= 0 {
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if err := parser.AddLineToGraph(graph, row, line); err != nil {
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cancel()
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return err
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}
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break
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}
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parser.ParseGlyphs(line)
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}
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for scanner.Scan() {
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row++
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line := scanner.Bytes()
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if err := parser.AddLineToGraph(graph, row, line); err != nil {
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cancel()
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return err
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}
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}
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return scanner.Err()
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},
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}); err != nil {
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return graph, err
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}
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return graph, nil
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}
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