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package main
import (
"context"
"encoding/xml"
"fmt"
"html/template"
"net/http"
"os"
"os/exec"
"path/filepath"
"strconv"
"strings"
"time"
)
func (s *Server) star(w http.ResponseWriter, r *http.Request, repo Repo) {
u := s.require(w, r)
if u == nil {
return
}
s.store.Star(u.ID, repo.ID, !s.store.Starred(u.ID, repo.ID))
http.Redirect(w, r, "/"+repo.Path(), http.StatusSeeOther)
}
func (s *Server) renameRepo(w http.ResponseWriter, r *http.Request, repo Repo) {
rp, _, _ := s.repoPage(r, repo, "")
if !rp.IsOwner {
s.fail(w, r, 403, "Not your repository")
return
}
name := strings.TrimSpace(r.FormValue("name"))
back := "/" + repo.Path() + "/settings"
if name == repo.Name {
http.Redirect(w, r, back, http.StatusSeeOther)
return
}
if err := s.store.RenameRepo(repo.ID, name); err != nil {
http.Redirect(w, r, back+"?error="+template.URLQueryEscaper(err.Error()), http.StatusSeeOther)
return
}
renamed := repo
renamed.Name = name
if err := os.Rename(s.repoDir(repo), s.repoDir(renamed)); err != nil {
s.store.RenameRepo(repo.ID, repo.Name)
http.Redirect(w, r, back+"?error="+template.URLQueryEscaper(err.Error()), http.StatusSeeOther)
return
}
http.Redirect(w, r, "/"+renamed.Path()+"/settings", http.StatusSeeOther)
}
func (s *Server) transferRepo(w http.ResponseWriter, r *http.Request, repo Repo) {
rp, _, _ := s.repoPage(r, repo, "")
if !rp.IsOwner {
s.fail(w, r, 403, "Not your repository")
return
}
back := "/" + repo.Path() + "/settings"
target, err := s.store.UserByName(strings.TrimSpace(strings.TrimPrefix(r.FormValue("owner"), "~")))
if err != nil {
http.Redirect(w, r, back+"?error=No+such+user", http.StatusSeeOther)
return
}
if target.ID == repo.Owner.ID {
http.Redirect(w, r, back, http.StatusSeeOther)
return
}
if r.FormValue("confirm") != repo.Name {
http.Redirect(w, r, back+"?error=Type+the+repository+name+to+confirm+the+transfer", http.StatusSeeOther)
return
}
if err := s.store.TransferRepo(repo.ID, target.ID); err != nil {
http.Redirect(w, r, back+"?error="+template.URLQueryEscaper(err.Error()), http.StatusSeeOther)
return
}
moved := repo
moved.Owner = target
os.MkdirAll(filepath.Dir(s.repoDir(moved)), 0o755)
if err := os.Rename(s.repoDir(repo), s.repoDir(moved)); err != nil {
s.store.TransferRepo(repo.ID, repo.Owner.ID)
http.Redirect(w, r, back+"?error="+template.URLQueryEscaper(err.Error()), http.StatusSeeOther)
return
}
s.notify(s.store.VerifiedEmail(target.ID), fmt.Sprintf("[%s] repository transferred to you", moved.Path()),
fmt.Sprintf("~%s transferred %s to you. It now lives at https://%s/%s\n", repo.Owner.Name, repo.Name, s.host, moved.Path()))
http.Redirect(w, r, "/"+moved.Path(), http.StatusSeeOther)
}
func (s *Server) archiveRepo(w http.ResponseWriter, r *http.Request, repo Repo) {
rp, _, _ := s.repoPage(r, repo, "")
if !rp.IsOwner {
s.fail(w, r, 403, "Not your repository")
return
}
s.store.SetArchived(repo.ID, !repo.Archived)
http.Redirect(w, r, "/"+repo.Path()+"/settings", http.StatusSeeOther)
}
type BlameLine struct {
Hash string
Author string
Time time.Time
Line int
Text string
First bool
Subject string
}
func (g Git) Blame(commit, filePath string) ([]BlameLine, error) {
out, err := g.run(nil, "blame", "--porcelain", commit, "--", filePath)
if err != nil {
return nil, err
}
meta := map[string]*BlameLine{}
var lines []BlameLine
var cur *BlameLine
for _, line := range strings.Split(string(out), "\n") {
switch {
case strings.HasPrefix(line, "\t"):
if cur != nil {
cur.Text = line[1:]
lines = append(lines, *cur)
cur = nil
}
case cur == nil:
f := strings.Fields(line)
if len(f) < 3 || len(f[0]) != 40 {
continue
}
n, _ := strconv.Atoi(f[2])
base := meta[f[0]]
if base == nil {
base = &BlameLine{Hash: f[0]}
meta[f[0]] = base
}
cur = &BlameLine{Hash: f[0], Author: base.Author, Time: base.Time, Subject: base.Subject, Line: n}
case strings.HasPrefix(line, "author "):
meta[cur.Hash].Author = strings.TrimPrefix(line, "author ")
cur.Author = meta[cur.Hash].Author
case strings.HasPrefix(line, "author-time "):
t, _ := strconv.ParseInt(strings.TrimPrefix(line, "author-time "), 10, 64)
meta[cur.Hash].Time = time.Unix(t, 0)
cur.Time = meta[cur.Hash].Time
case strings.HasPrefix(line, "summary "):
meta[cur.Hash].Subject = strings.TrimPrefix(line, "summary ")
cur.Subject = meta[cur.Hash].Subject
}
}
prev := ""
for i := range lines {
lines[i].First = lines[i].Hash != prev
prev = lines[i].Hash
}
return lines, nil
}
func (s *Server) blame(w http.ResponseWriter, r *http.Request, repo Repo, spec string) {
g := Git{Dir: s.repoDir(repo)}
ref, filePath, ok := s.splitRef(g, spec)
if !ok {
s.fail(w, r, 404, "No such ref")
return
}
filePath, ok = cleanPath(filePath)
if !ok || filePath == "" {
s.fail(w, r, 404, "No such path")
return
}
rp, g, err := s.repoPage(r, repo, ref)
if err != nil {
s.fail(w, r, 404, "No such ref")
return
}
rp.Tab = "tree"
if g.Size(rp.Commit, filePath) > maxRender {
s.fail(w, r, 413, "File too large to blame")
return
}
lines, err := g.Blame(rp.Commit, filePath)
if err != nil {
s.fail(w, r, 404, "No such path")
return
}
crumbs := strings.Split(filePath, "/")
data := map[string]any{"Page": rp, "Path": filePath, "Crumbs": crumbs, "Lines": lines, "File": true, "Blame": true}
if entry := g.Entry(rp.Commit, filePath); entry != nil {
data["Entry"] = entry
}
if last, _ := g.Log(rp.Commit, 1, filePath); len(last) > 0 {
data["LastCommit"] = last[0]
}
s.render(w, r, "blame", page{Title: repo.Path() + "/" + filePath + " blame", Data: data})
}
func (s *Server) compare(w http.ResponseWriter, r *http.Request, repo Repo, spec string) {
rp, g, err := s.repoPage(r, repo, "")
if err != nil {
s.fail(w, r, 404, "No such ref")
return
}
rp.Tab = "log"
branches, _ := g.Refs("refs/heads")
data := map[string]any{"Page": rp, "Branches": branches}
base, head, ok := strings.Cut(spec, "...")
if !ok {
base, head = r.URL.Query().Get("base"), r.URL.Query().Get("head")
}
data["Base"], data["Head"] = base, head
if base != "" && head != "" {
bh, err1 := g.Resolve(base)
hh, err2 := g.Resolve(head)
if err1 != nil || err2 != nil {
s.fail(w, r, 404, "No such ref")
return
}
if mb, err := g.MergeBase(bh, hh); err == nil {
commits, _ := g.LogRange(mb, hh, 200)
files, _ := g.DiffRange(mb, hh)
added, removed := 0, 0
for _, f := range files {
added += f.Added
removed += f.Removed
}
data["Commits"], data["Files"], data["Added"], data["Removed"], data["HeadHash"] = commits, files, added, removed, hh
} else {
data["Unrelated"] = true
}
}
s.render(w, r, "compare", page{Title: repo.Path() + " compare", Data: data})
}
func (s *Server) download(w http.ResponseWriter, r *http.Request, repo Repo, spec string) {
g := Git{Dir: s.repoDir(repo)}
format := ""
switch {
case strings.HasSuffix(spec, ".tar.gz"):
format, spec = "tar.gz", strings.TrimSuffix(spec, ".tar.gz")
case strings.HasSuffix(spec, ".zip"):
format, spec = "zip", strings.TrimSuffix(spec, ".zip")
default:
s.fail(w, r, 404, "Use .tar.gz or .zip")
return
}
commit, err := g.Resolve(spec)
if err != nil {
s.fail(w, r, 404, "No such ref")
return
}
safe := strings.NewReplacer("/", "-", "\\", "-").Replace(spec)
name := repo.Name + "-" + safe
ctx, cancel := context.WithTimeout(r.Context(), 10*time.Minute)
defer cancel()
cmd := exec.CommandContext(ctx, "git", "-C", g.Dir, "archive", "--format="+format, "--prefix="+name+"/", commit)
cmd.Env = []string{"GIT_CONFIG_NOSYSTEM=1", "HOME=/nonexistent", "PATH=" + os.Getenv("PATH")}
w.Header().Set("Content-Type", "application/octet-stream")
w.Header().Set("Content-Disposition", `attachment; filename="`+name+"."+format+`"`)
cmd.Stdout = w
cmd.Run()
}
type atomFeed struct {
XMLName xml.Name `xml:"feed"`
NS string `xml:"xmlns,attr"`
Title string `xml:"title"`
ID string `xml:"id"`
Updated string `xml:"updated"`
Link atomLink `xml:"link"`
Entries []atomEntry `xml:"entry"`
}
type atomLink struct {
Href string `xml:"href,attr"`
}
type atomEntry struct {
Title string `xml:"title"`
ID string `xml:"id"`
Updated string `xml:"updated"`
Author string `xml:"author>name"`
Link atomLink `xml:"link"`
Content string `xml:"content"`
}
func (s *Server) feed(w http.ResponseWriter, r *http.Request, repo Repo) {
rp, g, err := s.repoPage(r, repo, r.URL.Query().Get("ref"))
if err != nil {
s.fail(w, r, 404, "No such ref")
return
}
base := "https://" + s.host + "/" + repo.Path()
feed := atomFeed{NS: "http://www.w3.org/2005/Atom", Title: repo.Path() + " commits on " + rp.Ref, ID: base + "/feed", Link: atomLink{Href: base}, Updated: time.Now().UTC().Format(time.RFC3339)}
if !rp.Empty {
commits, _ := g.Log(rp.Commit, 30, "")
for _, c := range commits {
feed.Entries = append(feed.Entries, atomEntry{Title: c.Subject, ID: base + "/commit/" + c.Hash, Updated: c.Time.UTC().Format(time.RFC3339), Author: c.Author, Link: atomLink{Href: base + "/commit/" + c.Hash}, Content: c.Body})
}
if len(commits) > 0 {
feed.Updated = commits[0].Time.UTC().Format(time.RFC3339)
}
}
w.Header().Set("Content-Type", "application/atom+xml; charset=utf-8")
w.Write([]byte(xml.Header))
xml.NewEncoder(w).Encode(feed)
}
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