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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>
68 lines
1.7 KiB
Go
68 lines
1.7 KiB
Go
// Copyright 2015 The Gogs Authors. All rights reserved.
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package git
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import (
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"bytes"
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"os"
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"strings"
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"time"
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)
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// CommitTreeOpts represents the possible options to CommitTree
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type CommitTreeOpts struct {
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Parents []string
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Message string
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KeyID string
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NoGPGSign bool
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AlwaysSign bool
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}
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// CommitTree creates a commit from a given tree id for the user with provided message
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func (repo *Repository) CommitTree(author, committer *Signature, tree *Tree, opts CommitTreeOpts) (SHA1, error) {
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commitTimeStr := time.Now().Format(time.RFC3339)
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// Because this may call hooks we should pass in the environment
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env := append(os.Environ(),
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"GIT_AUTHOR_NAME="+author.Name,
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"GIT_AUTHOR_EMAIL="+author.Email,
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"GIT_AUTHOR_DATE="+commitTimeStr,
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"GIT_COMMITTER_NAME="+committer.Name,
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"GIT_COMMITTER_EMAIL="+committer.Email,
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"GIT_COMMITTER_DATE="+commitTimeStr,
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)
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cmd := NewCommand(repo.Ctx, "commit-tree").AddDynamicArguments(tree.ID.String())
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for _, parent := range opts.Parents {
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cmd.AddArguments("-p").AddDynamicArguments(parent)
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}
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messageBytes := new(bytes.Buffer)
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_, _ = messageBytes.WriteString(opts.Message)
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_, _ = messageBytes.WriteString("\n")
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if opts.KeyID != "" || opts.AlwaysSign {
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cmd.AddOptionFormat("-S%s", opts.KeyID)
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}
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if opts.NoGPGSign {
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cmd.AddArguments("--no-gpg-sign")
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}
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stdout := new(bytes.Buffer)
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stderr := new(bytes.Buffer)
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err := cmd.Run(&RunOpts{
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Env: env,
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Dir: repo.Path,
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Stdin: messageBytes,
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Stdout: stdout,
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Stderr: stderr,
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})
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if err != nil {
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return SHA1{}, ConcatenateError(err, stderr.String())
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}
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return NewIDFromString(strings.TrimSpace(stdout.String()))
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}
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