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@@ -1,21 +1,32 @@
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+// Copyright 2014 The Gogs 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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+
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package models
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import (
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+ "bufio"
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+ "errors"
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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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+ "path"
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"path/filepath"
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+ "strings"
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+ "sync"
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"time"
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"github.com/Unknwon/com"
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)
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var (
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+ sshOpLocker = sync.Mutex{}
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//publicKeyRootPath string
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- sshPath string
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- appPath string
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- tmplPublicKey = "### autogenerated by gitgos, DO NOT EDIT\n" +
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- "command=\"%s serv key-%d\",no-port-forwarding," +
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+ sshPath string
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+ appPath string
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+ // "### autogenerated by gitgos, DO NOT EDIT\n"
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+ tmplPublicKey = "command=\"%s serv key-%d\",no-port-forwarding," +
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"no-X11-forwarding,no-agent-forwarding,no-pty %s\n"
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)
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@@ -47,29 +58,60 @@ func init() {
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}
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type PublicKey struct {
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- Id int64
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- OwnerId int64 `xorm:"index"`
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- Name string `xorm:"unique not null"`
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- Content string `xorm:"text not null"`
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- Created time.Time `xorm:"created"`
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- Updated time.Time `xorm:"updated"`
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+ Id int64
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+ OwnerId int64 `xorm:"index"`
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+ Name string `xorm:"unique not null"`
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+ Fingerprint string
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+ Content string `xorm:"text not null"`
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+ Created time.Time `xorm:"created"`
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+ Updated time.Time `xorm:"updated"`
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}
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+var (
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+ ErrKeyAlreadyExist = errors.New("Public key already exist")
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+)
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+
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func GenAuthorizedKey(keyId int64, key string) string {
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return fmt.Sprintf(tmplPublicKey, appPath, keyId, key)
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}
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-func AddPublicKey(key *PublicKey) error {
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- _, err := orm.Insert(key)
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+func AddPublicKey(key *PublicKey) (err error) {
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+ // Check if public key name has been used.
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+ has, err := orm.Get(key)
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if err != nil {
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return err
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+ } else if has {
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+ return ErrKeyAlreadyExist
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}
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- err = SaveAuthorizedKeyFile(key)
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+ // Calculate fingerprint.
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+ tmpPath := filepath.Join(os.TempDir(), fmt.Sprintf("%d", time.Now().Nanosecond()),
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+ "id_rsa.pub")
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+ os.MkdirAll(path.Dir(tmpPath), os.ModePerm)
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+ f, err := os.Create(tmpPath)
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+ if err != nil {
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+ return
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+ }
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+ if _, err = f.WriteString(key.Content); err != nil {
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+ return err
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+ }
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+ f.Close()
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+ stdout, _, err := com.ExecCmd("ssh-keygen", "-l", "-f", tmpPath)
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if err != nil {
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- _, err2 := orm.Delete(key)
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- if err2 != nil {
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- // TODO: log the error
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+ return err
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+ } else if len(stdout) < 2 {
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+ return errors.New("Not enough output for calculating fingerprint")
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+ }
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+ key.Fingerprint = strings.Split(stdout, " ")[1]
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+
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+ // Save SSH key.
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+ if _, err = orm.Insert(key); err != nil {
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+ return err
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+ }
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+
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+ if err = SaveAuthorizedKeyFile(key); err != nil {
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+ if _, err2 := orm.Delete(key); err2 != nil {
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+ return err2
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}
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return err
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}
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@@ -77,9 +119,71 @@ func AddPublicKey(key *PublicKey) error {
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return nil
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}
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-func DeletePublicKey(key *PublicKey) error {
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- _, err := orm.Delete(key)
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- return err
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+// DeletePublicKey deletes SSH key information both in database and authorized_keys file.
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+func DeletePublicKey(key *PublicKey) (err error) {
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+ has, err := orm.Id(key.Id).Get(key)
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+ if err != nil {
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+ return err
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+ } else if !has {
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+ return errors.New("Public key does not exist")
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+ }
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+ if _, err = orm.Delete(key); err != nil {
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+ return err
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+ }
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+
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+ sshOpLocker.Lock()
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+ defer sshOpLocker.Unlock()
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+
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+ p := filepath.Join(sshPath, "authorized_keys")
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+ tmpP := filepath.Join(sshPath, "authorized_keys.tmp")
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+ fr, err := os.Open(p)
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+ if err != nil {
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+ return err
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+ }
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+ defer fr.Close()
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+
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+ fw, err := os.Create(tmpP)
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+ if err != nil {
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+ return err
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+ }
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+ defer fw.Close()
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+
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+ buf := bufio.NewReader(fr)
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+ for {
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+ line, errRead := buf.ReadString('\n')
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+ line = strings.TrimSpace(line)
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+
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+ if errRead != nil {
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+ if errRead != io.EOF {
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+ return errRead
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+ }
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+
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+ // Reached end of file, if nothing to read then break,
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+ // otherwise handle the last line.
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+ if len(line) == 0 {
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+ break
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+ }
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+ }
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+
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+ // Found the line and copy rest of file.
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+ if strings.Contains(line, fmt.Sprintf("key-%d", key.Id)) && strings.Contains(line, key.Content) {
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+ continue
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+ }
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+ // Still finding the line, copy the line that currently read.
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+ if _, err = fw.WriteString(line + "\n"); err != nil {
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+ return err
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+ }
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+
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+ if errRead == io.EOF {
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+ break
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+ }
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+ }
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+
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+ if err = os.Remove(p); err != nil {
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+ return err
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+ }
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+
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+ return os.Rename(tmpP, p)
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}
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func ListPublicKey(userId int64) ([]PublicKey, error) {
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@@ -89,11 +193,16 @@ func ListPublicKey(userId int64) ([]PublicKey, error) {
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}
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func SaveAuthorizedKeyFile(key *PublicKey) error {
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+ sshOpLocker.Lock()
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+ defer sshOpLocker.Unlock()
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+
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p := filepath.Join(sshPath, "authorized_keys")
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f, err := os.OpenFile(p, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0600)
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if err != nil {
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return err
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}
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+ defer f.Close()
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+
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//os.Chmod(p, 0600)
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_, err = f.WriteString(GenAuthorizedKey(key.Id, key.Content))
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return err
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