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https://github.com/go-gitea/gitea.git
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Replace #10912 And there are many new tests to cover the CLI behavior There were some concerns about the "option order in hook scripts" (https://github.com/go-gitea/gitea/pull/10912#issuecomment-1137543314), it's not a problem now. Because the hook script uses `/gitea hook --config=/app.ini pre-receive` format. The "config" is a global option, it can appear anywhere. ---- ## ⚠️ BREAKING ⚠️ This PR does it best to avoid breaking anything. The major changes are: * `gitea` itself won't accept web's options: `--install-port` / `--pid` / `--port` / `--quiet` / `--verbose` .... They are `web` sub-command's options. * Use `./gitea web --pid ....` instead * `./gitea` can still run the `web` sub-command as shorthand, with default options * The sub-command's options must follow the sub-command * Before: `./gitea --sub-opt subcmd` might equal to `./gitea subcmd --sub-opt` (well, might not ...) * After: only `./gitea subcmd --sub-opt` could be used * The global options like `--config` are not affected
793 lines
20 KiB
Go
793 lines
20 KiB
Go
// Copyright 2017 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package cmd
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import (
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"bufio"
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"bytes"
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"context"
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"fmt"
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"io"
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"os"
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"strconv"
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"strings"
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"time"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/private"
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repo_module "code.gitea.io/gitea/modules/repository"
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"code.gitea.io/gitea/modules/setting"
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"github.com/urfave/cli/v2"
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)
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const (
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hookBatchSize = 30
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)
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var (
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// CmdHook represents the available hooks sub-command.
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CmdHook = &cli.Command{
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Name: "hook",
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Usage: "Delegate commands to corresponding Git hooks",
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Description: "This should only be called by Git",
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Before: PrepareConsoleLoggerLevel(log.FATAL),
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Subcommands: []*cli.Command{
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subcmdHookPreReceive,
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subcmdHookUpdate,
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subcmdHookPostReceive,
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subcmdHookProcReceive,
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},
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}
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subcmdHookPreReceive = &cli.Command{
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Name: "pre-receive",
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Usage: "Delegate pre-receive Git hook",
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Description: "This command should only be called by Git",
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Action: runHookPreReceive,
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Flags: []cli.Flag{
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&cli.BoolFlag{
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Name: "debug",
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},
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},
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}
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subcmdHookUpdate = &cli.Command{
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Name: "update",
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Usage: "Delegate update Git hook",
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Description: "This command should only be called by Git",
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Action: runHookUpdate,
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Flags: []cli.Flag{
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&cli.BoolFlag{
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Name: "debug",
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},
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},
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}
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subcmdHookPostReceive = &cli.Command{
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Name: "post-receive",
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Usage: "Delegate post-receive Git hook",
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Description: "This command should only be called by Git",
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Action: runHookPostReceive,
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Flags: []cli.Flag{
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&cli.BoolFlag{
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Name: "debug",
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},
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},
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}
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// Note: new hook since git 2.29
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subcmdHookProcReceive = &cli.Command{
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Name: "proc-receive",
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Usage: "Delegate proc-receive Git hook",
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Description: "This command should only be called by Git",
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Action: runHookProcReceive,
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Flags: []cli.Flag{
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&cli.BoolFlag{
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Name: "debug",
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},
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},
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}
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)
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type delayWriter struct {
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internal io.Writer
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buf *bytes.Buffer
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timer *time.Timer
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}
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func newDelayWriter(internal io.Writer, delay time.Duration) *delayWriter {
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timer := time.NewTimer(delay)
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return &delayWriter{
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internal: internal,
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buf: &bytes.Buffer{},
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timer: timer,
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}
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}
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func (d *delayWriter) Write(p []byte) (n int, err error) {
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if d.buf != nil {
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select {
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case <-d.timer.C:
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_, err := d.internal.Write(d.buf.Bytes())
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if err != nil {
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return 0, err
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}
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d.buf = nil
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return d.internal.Write(p)
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default:
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return d.buf.Write(p)
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}
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}
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return d.internal.Write(p)
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}
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func (d *delayWriter) WriteString(s string) (n int, err error) {
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if d.buf != nil {
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select {
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case <-d.timer.C:
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_, err := d.internal.Write(d.buf.Bytes())
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if err != nil {
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return 0, err
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}
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d.buf = nil
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return d.internal.Write([]byte(s))
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default:
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return d.buf.WriteString(s)
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}
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}
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return d.internal.Write([]byte(s))
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}
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func (d *delayWriter) Close() error {
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if d == nil {
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return nil
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}
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stopped := d.timer.Stop()
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if stopped || d.buf == nil {
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return nil
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}
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_, err := d.internal.Write(d.buf.Bytes())
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d.buf = nil
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return err
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}
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type nilWriter struct{}
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func (n *nilWriter) Write(p []byte) (int, error) {
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return len(p), nil
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}
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func (n *nilWriter) WriteString(s string) (int, error) {
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return len(s), nil
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}
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func runHookPreReceive(c *cli.Context) error {
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if isInternal, _ := strconv.ParseBool(os.Getenv(repo_module.EnvIsInternal)); isInternal {
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return nil
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}
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ctx, cancel := installSignals()
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defer cancel()
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setup(ctx, c.Bool("debug"))
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if len(os.Getenv("SSH_ORIGINAL_COMMAND")) == 0 {
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if setting.OnlyAllowPushIfGiteaEnvironmentSet {
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return fail(ctx, `Rejecting changes as Gitea environment not set.
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If you are pushing over SSH you must push with a key managed by
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Gitea or set your environment appropriately.`, "")
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}
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return nil
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}
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// the environment is set by serv command
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isWiki, _ := strconv.ParseBool(os.Getenv(repo_module.EnvRepoIsWiki))
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username := os.Getenv(repo_module.EnvRepoUsername)
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reponame := os.Getenv(repo_module.EnvRepoName)
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userID, _ := strconv.ParseInt(os.Getenv(repo_module.EnvPusherID), 10, 64)
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prID, _ := strconv.ParseInt(os.Getenv(repo_module.EnvPRID), 10, 64)
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deployKeyID, _ := strconv.ParseInt(os.Getenv(repo_module.EnvDeployKeyID), 10, 64)
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actionPerm, _ := strconv.ParseInt(os.Getenv(repo_module.EnvActionPerm), 10, 64)
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hookOptions := private.HookOptions{
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UserID: userID,
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GitAlternativeObjectDirectories: os.Getenv(private.GitAlternativeObjectDirectories),
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GitObjectDirectory: os.Getenv(private.GitObjectDirectory),
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GitQuarantinePath: os.Getenv(private.GitQuarantinePath),
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GitPushOptions: pushOptions(),
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PullRequestID: prID,
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DeployKeyID: deployKeyID,
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ActionPerm: int(actionPerm),
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}
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scanner := bufio.NewScanner(os.Stdin)
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oldCommitIDs := make([]string, hookBatchSize)
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newCommitIDs := make([]string, hookBatchSize)
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refFullNames := make([]git.RefName, hookBatchSize)
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count := 0
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total := 0
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lastline := 0
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var out io.Writer
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out = &nilWriter{}
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if setting.Git.VerbosePush {
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if setting.Git.VerbosePushDelay > 0 {
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dWriter := newDelayWriter(os.Stdout, setting.Git.VerbosePushDelay)
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defer dWriter.Close()
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out = dWriter
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} else {
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out = os.Stdout
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}
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}
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supportProcReceive := false
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if git.CheckGitVersionAtLeast("2.29") == nil {
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supportProcReceive = true
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}
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for scanner.Scan() {
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// TODO: support news feeds for wiki
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if isWiki {
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continue
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}
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fields := bytes.Fields(scanner.Bytes())
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if len(fields) != 3 {
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continue
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}
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oldCommitID := string(fields[0])
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newCommitID := string(fields[1])
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refFullName := git.RefName(fields[2])
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total++
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lastline++
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// If the ref is a branch or tag, check if it's protected
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// if supportProcReceive all ref should be checked because
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// permission check was delayed
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if supportProcReceive || refFullName.IsBranch() || refFullName.IsTag() {
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oldCommitIDs[count] = oldCommitID
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newCommitIDs[count] = newCommitID
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refFullNames[count] = refFullName
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count++
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fmt.Fprintf(out, "*")
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if count >= hookBatchSize {
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fmt.Fprintf(out, " Checking %d references\n", count)
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hookOptions.OldCommitIDs = oldCommitIDs
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hookOptions.NewCommitIDs = newCommitIDs
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hookOptions.RefFullNames = refFullNames
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extra := private.HookPreReceive(ctx, username, reponame, hookOptions)
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if extra.HasError() {
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return fail(ctx, extra.UserMsg, "HookPreReceive(batch) failed: %v", extra.Error)
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}
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count = 0
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lastline = 0
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}
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} else {
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fmt.Fprintf(out, ".")
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}
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if lastline >= hookBatchSize {
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fmt.Fprintf(out, "\n")
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lastline = 0
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}
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}
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if count > 0 {
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hookOptions.OldCommitIDs = oldCommitIDs[:count]
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hookOptions.NewCommitIDs = newCommitIDs[:count]
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hookOptions.RefFullNames = refFullNames[:count]
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fmt.Fprintf(out, " Checking %d references\n", count)
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extra := private.HookPreReceive(ctx, username, reponame, hookOptions)
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if extra.HasError() {
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return fail(ctx, extra.UserMsg, "HookPreReceive(last) failed: %v", extra.Error)
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}
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} else if lastline > 0 {
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fmt.Fprintf(out, "\n")
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}
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fmt.Fprintf(out, "Checked %d references in total\n", total)
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return nil
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}
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func runHookUpdate(c *cli.Context) error {
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// Update is empty and is kept only for backwards compatibility
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return nil
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}
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func runHookPostReceive(c *cli.Context) error {
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ctx, cancel := installSignals()
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defer cancel()
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setup(ctx, c.Bool("debug"))
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// First of all run update-server-info no matter what
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if _, _, err := git.NewCommand(ctx, "update-server-info").RunStdString(nil); err != nil {
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return fmt.Errorf("Failed to call 'git update-server-info': %w", err)
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}
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// Now if we're an internal don't do anything else
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if isInternal, _ := strconv.ParseBool(os.Getenv(repo_module.EnvIsInternal)); isInternal {
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return nil
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}
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if len(os.Getenv("SSH_ORIGINAL_COMMAND")) == 0 {
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if setting.OnlyAllowPushIfGiteaEnvironmentSet {
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return fail(ctx, `Rejecting changes as Gitea environment not set.
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If you are pushing over SSH you must push with a key managed by
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Gitea or set your environment appropriately.`, "")
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}
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return nil
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}
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var out io.Writer
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var dWriter *delayWriter
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out = &nilWriter{}
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if setting.Git.VerbosePush {
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if setting.Git.VerbosePushDelay > 0 {
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dWriter = newDelayWriter(os.Stdout, setting.Git.VerbosePushDelay)
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defer dWriter.Close()
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out = dWriter
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} else {
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out = os.Stdout
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}
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}
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// the environment is set by serv command
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repoUser := os.Getenv(repo_module.EnvRepoUsername)
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isWiki, _ := strconv.ParseBool(os.Getenv(repo_module.EnvRepoIsWiki))
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repoName := os.Getenv(repo_module.EnvRepoName)
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pusherID, _ := strconv.ParseInt(os.Getenv(repo_module.EnvPusherID), 10, 64)
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pusherName := os.Getenv(repo_module.EnvPusherName)
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hookOptions := private.HookOptions{
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UserName: pusherName,
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UserID: pusherID,
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GitAlternativeObjectDirectories: os.Getenv(private.GitAlternativeObjectDirectories),
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GitObjectDirectory: os.Getenv(private.GitObjectDirectory),
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GitQuarantinePath: os.Getenv(private.GitQuarantinePath),
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GitPushOptions: pushOptions(),
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}
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oldCommitIDs := make([]string, hookBatchSize)
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newCommitIDs := make([]string, hookBatchSize)
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refFullNames := make([]git.RefName, hookBatchSize)
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count := 0
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total := 0
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wasEmpty := false
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masterPushed := false
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results := make([]private.HookPostReceiveBranchResult, 0)
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scanner := bufio.NewScanner(os.Stdin)
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for scanner.Scan() {
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// TODO: support news feeds for wiki
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if isWiki {
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continue
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}
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fields := bytes.Fields(scanner.Bytes())
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if len(fields) != 3 {
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continue
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}
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fmt.Fprintf(out, ".")
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oldCommitIDs[count] = string(fields[0])
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newCommitIDs[count] = string(fields[1])
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refFullNames[count] = git.RefName(fields[2])
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if refFullNames[count] == git.BranchPrefix+"master" && newCommitIDs[count] != git.EmptySHA && count == total {
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masterPushed = true
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}
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count++
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total++
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if count >= hookBatchSize {
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fmt.Fprintf(out, " Processing %d references\n", count)
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hookOptions.OldCommitIDs = oldCommitIDs
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hookOptions.NewCommitIDs = newCommitIDs
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hookOptions.RefFullNames = refFullNames
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resp, extra := private.HookPostReceive(ctx, repoUser, repoName, hookOptions)
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if extra.HasError() {
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_ = dWriter.Close()
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hookPrintResults(results)
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return fail(ctx, extra.UserMsg, "HookPostReceive failed: %v", extra.Error)
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}
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wasEmpty = wasEmpty || resp.RepoWasEmpty
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results = append(results, resp.Results...)
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count = 0
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}
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}
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if count == 0 {
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if wasEmpty && masterPushed {
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// We need to tell the repo to reset the default branch to master
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extra := private.SetDefaultBranch(ctx, repoUser, repoName, "master")
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if extra.HasError() {
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return fail(ctx, extra.UserMsg, "SetDefaultBranch failed: %v", extra.Error)
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}
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}
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fmt.Fprintf(out, "Processed %d references in total\n", total)
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_ = dWriter.Close()
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hookPrintResults(results)
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return nil
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}
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hookOptions.OldCommitIDs = oldCommitIDs[:count]
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hookOptions.NewCommitIDs = newCommitIDs[:count]
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hookOptions.RefFullNames = refFullNames[:count]
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fmt.Fprintf(out, " Processing %d references\n", count)
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resp, extra := private.HookPostReceive(ctx, repoUser, repoName, hookOptions)
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if resp == nil {
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_ = dWriter.Close()
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hookPrintResults(results)
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return fail(ctx, extra.UserMsg, "HookPostReceive failed: %v", extra.Error)
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}
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wasEmpty = wasEmpty || resp.RepoWasEmpty
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results = append(results, resp.Results...)
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fmt.Fprintf(out, "Processed %d references in total\n", total)
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if wasEmpty && masterPushed {
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// We need to tell the repo to reset the default branch to master
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extra := private.SetDefaultBranch(ctx, repoUser, repoName, "master")
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if extra.HasError() {
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return fail(ctx, extra.UserMsg, "SetDefaultBranch failed: %v", extra.Error)
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}
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}
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_ = dWriter.Close()
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hookPrintResults(results)
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return nil
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}
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func hookPrintResults(results []private.HookPostReceiveBranchResult) {
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for _, res := range results {
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if !res.Message {
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continue
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}
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fmt.Fprintln(os.Stderr, "")
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if res.Create {
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fmt.Fprintf(os.Stderr, "Create a new pull request for '%s':\n", res.Branch)
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fmt.Fprintf(os.Stderr, " %s\n", res.URL)
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} else {
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fmt.Fprint(os.Stderr, "Visit the existing pull request:\n")
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fmt.Fprintf(os.Stderr, " %s\n", res.URL)
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}
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fmt.Fprintln(os.Stderr, "")
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os.Stderr.Sync()
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}
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}
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func pushOptions() map[string]string {
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opts := make(map[string]string)
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if pushCount, err := strconv.Atoi(os.Getenv(private.GitPushOptionCount)); err == nil {
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for idx := 0; idx < pushCount; idx++ {
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opt := os.Getenv(fmt.Sprintf("GIT_PUSH_OPTION_%d", idx))
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kv := strings.SplitN(opt, "=", 2)
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if len(kv) == 2 {
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opts[kv[0]] = kv[1]
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}
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}
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}
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return opts
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}
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func runHookProcReceive(c *cli.Context) error {
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ctx, cancel := installSignals()
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defer cancel()
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setup(ctx, c.Bool("debug"))
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|
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if len(os.Getenv("SSH_ORIGINAL_COMMAND")) == 0 {
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if setting.OnlyAllowPushIfGiteaEnvironmentSet {
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return fail(ctx, `Rejecting changes as Gitea environment not set.
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If you are pushing over SSH you must push with a key managed by
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Gitea or set your environment appropriately.`, "")
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}
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return nil
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}
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|
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if git.CheckGitVersionAtLeast("2.29") != nil {
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return fail(ctx, "No proc-receive support", "current git version doesn't support proc-receive.")
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}
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reader := bufio.NewReader(os.Stdin)
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repoUser := os.Getenv(repo_module.EnvRepoUsername)
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repoName := os.Getenv(repo_module.EnvRepoName)
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pusherID, _ := strconv.ParseInt(os.Getenv(repo_module.EnvPusherID), 10, 64)
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pusherName := os.Getenv(repo_module.EnvPusherName)
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// 1. Version and features negotiation.
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|
// S: PKT-LINE(version=1\0push-options atomic...) / PKT-LINE(version=1\n)
|
|
// S: flush-pkt
|
|
// H: PKT-LINE(version=1\0push-options...)
|
|
// H: flush-pkt
|
|
|
|
rs, err := readPktLine(ctx, reader, pktLineTypeData)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
const VersionHead string = "version=1"
|
|
|
|
var (
|
|
hasPushOptions bool
|
|
response = []byte(VersionHead)
|
|
requestOptions []string
|
|
)
|
|
|
|
index := bytes.IndexByte(rs.Data, byte(0))
|
|
if index >= len(rs.Data) {
|
|
return fail(ctx, "Protocol: format error", "pkt-line: format error "+fmt.Sprint(rs.Data))
|
|
}
|
|
|
|
if index < 0 {
|
|
if len(rs.Data) == 10 && rs.Data[9] == '\n' {
|
|
index = 9
|
|
} else {
|
|
return fail(ctx, "Protocol: format error", "pkt-line: format error "+fmt.Sprint(rs.Data))
|
|
}
|
|
}
|
|
|
|
if string(rs.Data[0:index]) != VersionHead {
|
|
return fail(ctx, "Protocol: version error", "Received unsupported version: %s", string(rs.Data[0:index]))
|
|
}
|
|
requestOptions = strings.Split(string(rs.Data[index+1:]), " ")
|
|
|
|
for _, option := range requestOptions {
|
|
if strings.HasPrefix(option, "push-options") {
|
|
response = append(response, byte(0))
|
|
response = append(response, []byte("push-options")...)
|
|
hasPushOptions = true
|
|
}
|
|
}
|
|
response = append(response, '\n')
|
|
|
|
_, err = readPktLine(ctx, reader, pktLineTypeFlush)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
err = writeDataPktLine(ctx, os.Stdout, response)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
err = writeFlushPktLine(ctx, os.Stdout)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// 2. receive commands from server.
|
|
// S: PKT-LINE(<old-oid> <new-oid> <ref>)
|
|
// S: ... ...
|
|
// S: flush-pkt
|
|
// # [receive push-options]
|
|
// S: PKT-LINE(push-option)
|
|
// S: ... ...
|
|
// S: flush-pkt
|
|
hookOptions := private.HookOptions{
|
|
UserName: pusherName,
|
|
UserID: pusherID,
|
|
}
|
|
hookOptions.OldCommitIDs = make([]string, 0, hookBatchSize)
|
|
hookOptions.NewCommitIDs = make([]string, 0, hookBatchSize)
|
|
hookOptions.RefFullNames = make([]git.RefName, 0, hookBatchSize)
|
|
|
|
for {
|
|
// note: pktLineTypeUnknow means pktLineTypeFlush and pktLineTypeData all allowed
|
|
rs, err = readPktLine(ctx, reader, pktLineTypeUnknow)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if rs.Type == pktLineTypeFlush {
|
|
break
|
|
}
|
|
t := strings.SplitN(string(rs.Data), " ", 3)
|
|
if len(t) != 3 {
|
|
continue
|
|
}
|
|
hookOptions.OldCommitIDs = append(hookOptions.OldCommitIDs, t[0])
|
|
hookOptions.NewCommitIDs = append(hookOptions.NewCommitIDs, t[1])
|
|
hookOptions.RefFullNames = append(hookOptions.RefFullNames, git.RefName(t[2]))
|
|
}
|
|
|
|
hookOptions.GitPushOptions = make(map[string]string)
|
|
|
|
if hasPushOptions {
|
|
for {
|
|
rs, err = readPktLine(ctx, reader, pktLineTypeUnknow)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if rs.Type == pktLineTypeFlush {
|
|
break
|
|
}
|
|
|
|
kv := strings.SplitN(string(rs.Data), "=", 2)
|
|
if len(kv) == 2 {
|
|
hookOptions.GitPushOptions[kv[0]] = kv[1]
|
|
}
|
|
}
|
|
}
|
|
|
|
// 3. run hook
|
|
resp, extra := private.HookProcReceive(ctx, repoUser, repoName, hookOptions)
|
|
if extra.HasError() {
|
|
return fail(ctx, extra.UserMsg, "HookProcReceive failed: %v", extra.Error)
|
|
}
|
|
|
|
// 4. response result to service
|
|
// # a. OK, but has an alternate reference. The alternate reference name
|
|
// # and other status can be given in option directives.
|
|
// H: PKT-LINE(ok <ref>)
|
|
// H: PKT-LINE(option refname <refname>)
|
|
// H: PKT-LINE(option old-oid <old-oid>)
|
|
// H: PKT-LINE(option new-oid <new-oid>)
|
|
// H: PKT-LINE(option forced-update)
|
|
// H: ... ...
|
|
// H: flush-pkt
|
|
// # b. NO, I reject it.
|
|
// H: PKT-LINE(ng <ref> <reason>)
|
|
// # c. Fall through, let 'receive-pack' to execute it.
|
|
// H: PKT-LINE(ok <ref>)
|
|
// H: PKT-LINE(option fall-through)
|
|
|
|
for _, rs := range resp.Results {
|
|
if len(rs.Err) > 0 {
|
|
err = writeDataPktLine(ctx, os.Stdout, []byte("ng "+rs.OriginalRef.String()+" "+rs.Err))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
continue
|
|
}
|
|
|
|
if rs.IsNotMatched {
|
|
err = writeDataPktLine(ctx, os.Stdout, []byte("ok "+rs.OriginalRef.String()))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
err = writeDataPktLine(ctx, os.Stdout, []byte("option fall-through"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
continue
|
|
}
|
|
|
|
err = writeDataPktLine(ctx, os.Stdout, []byte("ok "+rs.OriginalRef))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
err = writeDataPktLine(ctx, os.Stdout, []byte("option refname "+rs.Ref))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if rs.OldOID != git.EmptySHA {
|
|
err = writeDataPktLine(ctx, os.Stdout, []byte("option old-oid "+rs.OldOID))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
err = writeDataPktLine(ctx, os.Stdout, []byte("option new-oid "+rs.NewOID))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if rs.IsForcePush {
|
|
err = writeDataPktLine(ctx, os.Stdout, []byte("option forced-update"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
err = writeFlushPktLine(ctx, os.Stdout)
|
|
|
|
return err
|
|
}
|
|
|
|
// git PKT-Line api
|
|
// pktLineType message type of pkt-line
|
|
type pktLineType int64
|
|
|
|
const (
|
|
// UnKnow type
|
|
pktLineTypeUnknow pktLineType = 0
|
|
// flush-pkt "0000"
|
|
pktLineTypeFlush pktLineType = iota
|
|
// data line
|
|
pktLineTypeData
|
|
)
|
|
|
|
// gitPktLine pkt-line api
|
|
type gitPktLine struct {
|
|
Type pktLineType
|
|
Length uint64
|
|
Data []byte
|
|
}
|
|
|
|
func readPktLine(ctx context.Context, in *bufio.Reader, requestType pktLineType) (*gitPktLine, error) {
|
|
var (
|
|
err error
|
|
r *gitPktLine
|
|
)
|
|
|
|
// read prefix
|
|
lengthBytes := make([]byte, 4)
|
|
for i := 0; i < 4; i++ {
|
|
lengthBytes[i], err = in.ReadByte()
|
|
if err != nil {
|
|
return nil, fail(ctx, "Protocol: stdin error", "Pkt-Line: read stdin failed : %v", err)
|
|
}
|
|
}
|
|
|
|
r = new(gitPktLine)
|
|
r.Length, err = strconv.ParseUint(string(lengthBytes), 16, 32)
|
|
if err != nil {
|
|
return nil, fail(ctx, "Protocol: format parse error", "Pkt-Line format is wrong :%v", err)
|
|
}
|
|
|
|
if r.Length == 0 {
|
|
if requestType == pktLineTypeData {
|
|
return nil, fail(ctx, "Protocol: format data error", "Pkt-Line format is wrong")
|
|
}
|
|
r.Type = pktLineTypeFlush
|
|
return r, nil
|
|
}
|
|
|
|
if r.Length <= 4 || r.Length > 65520 || requestType == pktLineTypeFlush {
|
|
return nil, fail(ctx, "Protocol: format length error", "Pkt-Line format is wrong")
|
|
}
|
|
|
|
r.Data = make([]byte, r.Length-4)
|
|
for i := range r.Data {
|
|
r.Data[i], err = in.ReadByte()
|
|
if err != nil {
|
|
return nil, fail(ctx, "Protocol: data error", "Pkt-Line: read stdin failed : %v", err)
|
|
}
|
|
}
|
|
|
|
r.Type = pktLineTypeData
|
|
|
|
return r, nil
|
|
}
|
|
|
|
func writeFlushPktLine(ctx context.Context, out io.Writer) error {
|
|
l, err := out.Write([]byte("0000"))
|
|
if err != nil || l != 4 {
|
|
return fail(ctx, "Protocol: write error", "Pkt-Line response failed: %v", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func writeDataPktLine(ctx context.Context, out io.Writer, data []byte) error {
|
|
hexchar := []byte("0123456789abcdef")
|
|
hex := func(n uint64) byte {
|
|
return hexchar[(n)&15]
|
|
}
|
|
|
|
length := uint64(len(data) + 4)
|
|
tmp := make([]byte, 4)
|
|
tmp[0] = hex(length >> 12)
|
|
tmp[1] = hex(length >> 8)
|
|
tmp[2] = hex(length >> 4)
|
|
tmp[3] = hex(length)
|
|
|
|
lr, err := out.Write(tmp)
|
|
if err != nil || lr != 4 {
|
|
return fail(ctx, "Protocol: write error", "Pkt-Line response failed: %v", err)
|
|
}
|
|
|
|
lr, err = out.Write(data)
|
|
if err != nil || int(length-4) != lr {
|
|
return fail(ctx, "Protocol: write error", "Pkt-Line response failed: %v", err)
|
|
}
|
|
|
|
return nil
|
|
}
|