// Return the hash for path stored in the xattrs. If the hash is out of date,
// the hash is computed anew, unless `compute` is false in which case nil is
// returned.
func GetHash(path string, info os.FileInfo, compute bool) (mh.Multihash, error) {
if info.Mode()&os.ModeSymlink != 0 {
return symlinkHash(path)
}
hashTimeStr, err := attrs.Get(path, XattrHashTime)
if err != nil {
if compute {
return HashFile(path, info)
} else if IsNoData(err) {
// ignore error
return nil, nil
} else {
return nil, err
}
}
hashTime, err := time.Parse(time.RFC3339Nano, string(hashTimeStr))
if err != nil {
return nil, err
}
if hashTime != info.ModTime() {
if compute {
return HashFile(path, info)
} else {
return nil, nil
}
}
return attrs.Get(path, XattrHash)
}
func GetHashTime(path string) (time.Time, error) {
hashTimeStr, err := attrs.Get(path, XattrHashTime)
if err != nil {
return time.Time{}, err
}
return time.Parse(time.RFC3339Nano, string(hashTimeStr))
}
func ConflictFile(path string) string {
conflict, err := attrs.Get(path, XattrConflict)
if err != nil {
return ""
} else {
return string(conflict)
}
}
// Commit file to given hash, force writing xattrs if force is true.
func CommitFileHash(path string, info os.FileInfo, digest []byte, force bool) (forced bool, err error) {
timeData := []byte(info.ModTime().Format(time.RFC3339Nano))
hash, err := attrs.Get(path, XattrHash)
if err != nil || !bytes.Equal(hash, digest) {
forced, err = attrs.SetForce(path, XattrHash, digest, info, force)
} else {
digest = nil
}
hashTimeStr, err := attrs.Get(path, XattrHashTime)
var hashTime time.Time
if err == nil {
hashTime, err = time.Parse(time.RFC3339Nano, string(hashTimeStr))
}
if err != nil || hashTime != info.ModTime() {
forced, err = attrs.SetForce(path, XattrHashTime, timeData, info, force)
}
return
}
func ConflictFileAlternatives(path string) []string {
var alternatives []string
for i := 0; true; i++ {
alt, err := attrs.Get(path, fmt.Sprintf("%s.%d", XattrConflict, i))
if err == nil {
alternatives = append(alternatives, string(alt))
} else {
break
}
}
return alternatives
}
func mainCheck(args []string) int {
f := flag.NewFlagSet("status", flag.ExitOnError)
opt_all := f.Bool("a", false, "Check all files, including modified")
f.Usage = func() {
fmt.Print(checkUsage)
f.PrintDefaults()
}
f.Parse(args)
dir := f.Arg(0)
if dir == "" {
dir = "."
}
err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
// Skip .dirstore/ at root
if filepath.Base(path) == attrs.DirStoreName && filepath.Dir(path) == dir && info.IsDir() {
return filepath.SkipDir
} else if info.IsDir() {
return nil
}
hashTimeStr, err := attrs.Get(path, repo.XattrHashTime)
if err != nil {
return nil
}
hashTime, err := time.Parse(time.RFC3339Nano, string(hashTimeStr))
if err != nil {
return err
}
timeEqual := hashTime == info.ModTime()
if *opt_all || timeEqual {
hash, err := attrs.Get(path, repo.XattrHash)
if err != nil {
return err
}
digest, err := repo.HashFile(path, info)
if err != nil {
return err
}
hashEqual := bytes.Equal(hash, digest)
if !timeEqual && !hashEqual {
fmt.Printf("+\t%s\t%s\n", base58.Encode(digest), path)
} else if !hashEqual {
fmt.Printf("!\t%s\t%s\n", base58.Encode(digest), path)
} else if !timeEqual {
fmt.Printf("=\t%s\t%s", base58.Encode(digest), path)
}
}
return nil
})
if err != nil {
fmt.Fprintf(os.Stderr, "%v", err)
return 1
}
return 0
}
func (act *CopyAction) Run() error {
var err error
if act.Link {
err = os.Link(act.Src, act.Dst)
if err != nil {
return fmt.Errorf("link %s: %s", act.Dst, err.Error())
}
} else if act.manualMode && act.srcInfo.Mode()&^(os.ModeDir /*|os.ModeSymlink*/) == 0 { // FIXME: enable symlinks
stat, ok := act.srcInfo.Sys().(*syscall.Stat_t)
if !ok {
panic("Could not get Stat_t")
}
symlink := act.srcInfo.Mode()&os.ModeSymlink != 0
if act.srcInfo.IsDir() {
err = os.Mkdir(act.Dst, 0700)
if err != nil {
return err
}
} else if symlink {
link, err := os.Readlink(act.Src)
if err != nil {
return err
}
err = os.Symlink(link, act.Dst)
if err != nil {
return err
}
} else {
f, err := os.OpenFile(act.Dst, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
return err
}
defer f.Close()
f0, err := os.Open(act.Src)
if err != nil {
return err
}
defer f0.Close()
_, err = io.Copy(f, f0)
if err != nil {
return err
}
}
err = os.Lchown(act.Dst, int(stat.Uid), int(stat.Gid))
if err != nil {
log.Println(err)
err = nil
}
if !symlink {
atime := time.Unix(stat.Atim.Sec, stat.Atim.Nsec)
err = os.Chtimes(act.Dst, atime, act.srcInfo.ModTime())
if err != nil {
return err
}
err = os.Chmod(act.Dst, act.SrcMode)
if err != nil {
return err
}
// FIXME: extended attributes for symlinks
// golang is missing some syscalls
xattr, values, err := attrs.GetList(act.Src)
if err != nil {
return err
}
for i, attrname := range xattr {
err = attrs.Set(act.Src, attrname, values[i])
if err != nil {
return err
}
}
}
return nil
} else {
os.MkdirAll(filepath.Dir(act.Dst), 0755) // Ignore error
cmd := exec.Command("/bin/cp", "-a", "--no-preserve=mode", "--reflink=auto", "-d", "-T", act.Src, act.Dst)
cmd.Stderr = os.Stderr
err = cmd.Run()
if err != nil {
return fmt.Errorf("cp %s %s: %s", act.Src, act.Dst, err.Error())
}
err = os.Chmod(act.Dst, act.SrcMode)
if err != nil {
return err
}
}
if act.Conflict {
if act.SrcMode&os.ModeSymlink == 0 {
err = repo.MarkConflictFor(act.Dst, filepath.Base(act.OriginalDst))
if err != nil {
return fmt.Errorf("%s: could not mark conflict: %s", act.Dst, err.Error())
}
}
if act.OrigDstMode&os.ModeSymlink == 0 {
err = repo.AddConflictAlternative(act.OriginalDst, filepath.Base(act.Dst))
if err != nil {
return fmt.Errorf("%s: could add conflict alternative: %s", act.Dst, err.Error())
}
}
}
if act.SrcMode&os.ModeSymlink == 0 {
if act.Hash != nil {
info, err := os.Lstat(act.Dst)
if err != nil {
return fmt.Errorf("%s: could add lstat: %s", act.Dst, err.Error())
}
_, err = repo.CommitFileHash(act.Dst, info, act.Hash, false)
if err != nil {
return fmt.Errorf("%s: could not commit: %s", act.Dst, err.Error())
}
} else {
hash, err := attrs.Get(act.Src, repo.XattrHash)
if err == nil {
err = attrs.Set(act.Dst, repo.XattrHash, hash)
if err != nil {
return fmt.Errorf("%s: could add xattr %s: %s", act.Dst, repo.XattrHash, err.Error())
}
}
hashTime, err := attrs.Get(act.Src, repo.XattrHashTime)
if err == nil {
err = attrs.Set(act.Dst, repo.XattrHashTime, hashTime)
if err != nil {
return fmt.Errorf("%s: could add xattr %s: %s", act.Dst, repo.XattrHashTime, err.Error())
}
}
}
}
return nil
}
func mainInfo(args []string) int {
f := flag.NewFlagSet("info", flag.ExitOnError)
opt_check := f.Bool("c", false, "Run integrity check")
f.Usage = func() {
fmt.Print(infoUsage)
f.PrintDefaults()
}
f.Parse(args)
dir := f.Arg(0)
if dir == "" {
dir = "."
}
rep := repo.GetRepo(dir)
status := 0
first := true
err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
if err != nil {
fmt.Fprintf(os.Stderr, "%s: %v\n", path, err.Error())
status = 1
return err
}
// Skip .dirstore/ at root
if filepath.Base(path) == attrs.DirStoreName && filepath.Dir(path) == dir && info.IsDir() {
return filepath.SkipDir
} else if !info.Mode().IsRegular() {
return nil
}
if first {
first = false
} else {
fmt.Println()
}
fmt.Printf("File: %s\n", path)
if conflict := repo.ConflictFile(path); conflict != "" {
fmt.Printf("Conflict With: %s\n", conflict)
}
for _, alt := range repo.ConflictFileAlternatives(path) {
fmt.Printf("Conflict Alternatives: %s\n", alt)
}
var realHash mh.Multihash
if *opt_check {
realHash, err = repo.HashFile(path, info)
if err != nil {
fmt.Fprintf(os.Stderr, "%s: %v\n", path, err)
return nil
}
}
hashTime, err := repo.GetHashTime(path)
if repo.IsNoData(err) {
if *opt_check {
fmt.Printf("Actual Hash: %s\n", base58.Encode(realHash))
}
fmt.Printf("Status: New\n")
} else {
if err != nil {
fmt.Fprintf(os.Stderr, "%s: %v\n", path, err.Error())
return nil
}
fmt.Printf("Hash Time: %v\n", hashTime.Format(time.RFC3339Nano))
hash, err := attrs.Get(path, repo.XattrHash)
if err != nil {
fmt.Fprintf(os.Stderr, "%s: %v\n", path, err)
return nil
}
var par2exists = false
if rep != nil {
par2exists, _ = rep.Par2Exists(hash)
}
fmt.Printf("Recorded Hash: %s (reduncency %s)\n", base58.Encode(hash), boolToAvailableStr(par2exists))
if *opt_check {
par2exists = false
if rep != nil {
par2exists, _ = rep.Par2Exists(realHash)
}
fmt.Printf("Actual Hash: %s (redundency %s)\n", base58.Encode(realHash), boolToAvailableStr(par2exists))
}
if hashTime != info.ModTime() {
fmt.Printf("Status: Dirty\n")
} else {
if *opt_check && !bytes.Equal(realHash, hash) {
fmt.Printf("Status: Corrupted\n")
} else {
fmt.Printf("Status: Clean\n")
}
}
}
return nil
})
if err != nil {
fmt.Fprintf(os.Stderr, "%v", err)
os.Exit(1)
}
return status
}
func mainSave(args []string) int {
f := flag.NewFlagSet("save", flag.ExitOnError)
opt_force := f.Bool("force", false, "Force writing xattrs on read only files")
opt_nodocignore := f.Bool("no-docignore", false, "Don't respect .docignore")
f.Usage = func() {
fmt.Print(saveUsage)
f.PrintDefaults()
}
f.Parse(args)
dir := f.Arg(0)
if dir == "" {
dir = "."
}
dirstore := repo.GetRepo(dir)
if dirstore == nil {
fmt.Fprintf(os.Stderr, "%s: Could not find repository, please run doc init\n", dir)
os.Exit(1)
}
status := 0
err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
if err != nil {
fmt.Fprintf(os.Stderr, "%s: %v\n", path, err.Error())
status = 1
return err
}
if !*opt_nodocignore && ignore.IsIgnored(path) {
return filepath.SkipDir
}
// Skip .dirstore/ at root
if filepath.Base(path) == attrs.DirStoreName && filepath.Dir(path) == dir && info.IsDir() {
return filepath.SkipDir
} else if info.IsDir() || !info.Mode().IsRegular() {
return nil
}
hashTime, err := repo.GetHashTime(path)
if err != nil && !repo.IsNoData(err) {
fmt.Fprintf(os.Stderr, "%s: %v\n", path, err.Error())
return nil
}
var digest []byte
if err != nil || hashTime != info.ModTime() {
digest, err = commitFile(path, info, *opt_force)
if err != nil {
status = 1
fmt.Fprintf(os.Stderr, "%s: %v\n", path, err.Error())
} else if digest != nil {
fmt.Printf("%s %s\n", base58.Encode(digest), path)
}
} else {
digest, err = attrs.Get(path, repo.XattrHash)
if err != nil {
fmt.Fprintf(os.Stderr, "%s: %v\n", path, err)
return nil
}
}
err = dirstore.Create(path, digest)
if err != nil {
fmt.Fprintf(os.Stderr, "%s: %v\n", path, err)
return nil
}
return nil
})
if err != nil {
fmt.Fprintf(os.Stderr, "%v", err)
os.Exit(1)
}
return status
}
