1d04e8641d
When Gitea is running as PID 1 git will occassionally orphan child processes leading to (defunct) processes. This PR simply sets Setpgid to true on these child processes meaning that these defunct processes will also be correctly reaped. Fix #19077 Signed-off-by: Andrew Thornton <art27@cantab.net>
133 lines
3.6 KiB
Go
133 lines
3.6 KiB
Go
// Copyright 2017 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package external
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import (
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"fmt"
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"io"
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"os"
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"os/exec"
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"runtime"
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"strings"
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"code.gitea.io/gitea/modules/graceful"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/markup"
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"code.gitea.io/gitea/modules/process"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/util"
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)
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// RegisterRenderers registers all supported third part renderers according settings
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func RegisterRenderers() {
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for _, renderer := range setting.ExternalMarkupRenderers {
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if renderer.Enabled && renderer.Command != "" && len(renderer.FileExtensions) > 0 {
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markup.RegisterRenderer(&Renderer{renderer})
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}
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}
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}
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// Renderer implements markup.Renderer for external tools
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type Renderer struct {
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*setting.MarkupRenderer
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}
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// Name returns the external tool name
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func (p *Renderer) Name() string {
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return p.MarkupName
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}
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// NeedPostProcess implements markup.Renderer
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func (p *Renderer) NeedPostProcess() bool {
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return p.MarkupRenderer.NeedPostProcess
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}
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// Extensions returns the supported extensions of the tool
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func (p *Renderer) Extensions() []string {
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return p.FileExtensions
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}
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// SanitizerRules implements markup.Renderer
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func (p *Renderer) SanitizerRules() []setting.MarkupSanitizerRule {
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return p.MarkupSanitizerRules
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}
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// SanitizerDisabled disabled sanitize if return true
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func (p *Renderer) SanitizerDisabled() bool {
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return p.DisableSanitizer
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}
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func envMark(envName string) string {
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if runtime.GOOS == "windows" {
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return "%" + envName + "%"
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}
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return "$" + envName
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}
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// Render renders the data of the document to HTML via the external tool.
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func (p *Renderer) Render(ctx *markup.RenderContext, input io.Reader, output io.Writer) error {
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var (
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urlRawPrefix = strings.Replace(ctx.URLPrefix, "/src/", "/raw/", 1)
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command = strings.NewReplacer(envMark("GITEA_PREFIX_SRC"), ctx.URLPrefix,
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envMark("GITEA_PREFIX_RAW"), urlRawPrefix).Replace(p.Command)
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commands = strings.Fields(command)
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args = commands[1:]
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)
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if p.IsInputFile {
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// write to temp file
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f, err := os.CreateTemp("", "gitea_input")
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if err != nil {
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return fmt.Errorf("%s create temp file when rendering %s failed: %v", p.Name(), p.Command, err)
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}
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tmpPath := f.Name()
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defer func() {
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if err := util.Remove(tmpPath); err != nil {
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log.Warn("Unable to remove temporary file: %s: Error: %v", tmpPath, err)
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}
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}()
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_, err = io.Copy(f, input)
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if err != nil {
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f.Close()
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return fmt.Errorf("%s write data to temp file when rendering %s failed: %v", p.Name(), p.Command, err)
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}
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err = f.Close()
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if err != nil {
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return fmt.Errorf("%s close temp file when rendering %s failed: %v", p.Name(), p.Command, err)
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}
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args = append(args, f.Name())
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}
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if ctx == nil || ctx.Ctx == nil {
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if ctx == nil {
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log.Warn("RenderContext not provided defaulting to empty ctx")
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ctx = &markup.RenderContext{}
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}
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log.Warn("RenderContext did not provide context, defaulting to Shutdown context")
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ctx.Ctx = graceful.GetManager().ShutdownContext()
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}
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processCtx, _, finished := process.GetManager().AddContext(ctx.Ctx, fmt.Sprintf("Render [%s] for %s", commands[0], ctx.URLPrefix))
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defer finished()
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cmd := exec.CommandContext(processCtx, commands[0], args...)
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cmd.Env = append(
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os.Environ(),
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"GITEA_PREFIX_SRC="+ctx.URLPrefix,
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"GITEA_PREFIX_RAW="+urlRawPrefix,
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)
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if !p.IsInputFile {
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cmd.Stdin = input
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}
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cmd.Stdout = output
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process.SetSysProcAttribute(cmd)
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if err := cmd.Run(); err != nil {
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return fmt.Errorf("%s render run command %s %v failed: %v", p.Name(), commands[0], args, err)
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}
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return nil
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}
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