mirror of
https://github.com/go-gitea/gitea
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1376 lines
38 KiB
Go
1376 lines
38 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Copyright 2019 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 models
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import (
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"bufio"
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"crypto/rsa"
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"crypto/x509"
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"encoding/asn1"
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"encoding/base64"
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"encoding/binary"
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"encoding/pem"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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"math/big"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"sync"
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"time"
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"code.gitea.io/gitea/modules/log"
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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/timeutil"
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"code.gitea.io/gitea/modules/util"
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"golang.org/x/crypto/ssh"
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"xorm.io/builder"
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"xorm.io/xorm"
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)
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const (
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tplCommentPrefix = `# gitea public key`
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tplCommand = "%s --config=%s serv key-%d"
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tplPublicKey = tplCommentPrefix + "\n" + `command=%s,no-port-forwarding,no-X11-forwarding,no-agent-forwarding,no-pty %s` + "\n"
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authorizedPrincipalsFile = "authorized_principals"
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)
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var sshOpLocker sync.Mutex
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// KeyType specifies the key type
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type KeyType int
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const (
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// KeyTypeUser specifies the user key
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KeyTypeUser = iota + 1
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// KeyTypeDeploy specifies the deploy key
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KeyTypeDeploy
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// KeyTypePrincipal specifies the authorized principal key
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KeyTypePrincipal
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)
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// PublicKey represents a user or deploy SSH public key.
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type PublicKey struct {
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ID int64 `xorm:"pk autoincr"`
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OwnerID int64 `xorm:"INDEX NOT NULL"`
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Name string `xorm:"NOT NULL"`
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Fingerprint string `xorm:"INDEX NOT NULL"`
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Content string `xorm:"TEXT NOT NULL"`
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Mode AccessMode `xorm:"NOT NULL DEFAULT 2"`
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Type KeyType `xorm:"NOT NULL DEFAULT 1"`
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LoginSourceID int64 `xorm:"NOT NULL DEFAULT 0"`
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CreatedUnix timeutil.TimeStamp `xorm:"created"`
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UpdatedUnix timeutil.TimeStamp `xorm:"updated"`
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HasRecentActivity bool `xorm:"-"`
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HasUsed bool `xorm:"-"`
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}
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// AfterLoad is invoked from XORM after setting the values of all fields of this object.
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func (key *PublicKey) AfterLoad() {
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key.HasUsed = key.UpdatedUnix > key.CreatedUnix
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key.HasRecentActivity = key.UpdatedUnix.AddDuration(7*24*time.Hour) > timeutil.TimeStampNow()
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}
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// OmitEmail returns content of public key without email address.
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func (key *PublicKey) OmitEmail() string {
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return strings.Join(strings.Split(key.Content, " ")[:2], " ")
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}
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// AuthorizedString returns formatted public key string for authorized_keys file.
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func (key *PublicKey) AuthorizedString() string {
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return fmt.Sprintf(tplPublicKey, util.ShellEscape(fmt.Sprintf(tplCommand, util.ShellEscape(setting.AppPath), util.ShellEscape(setting.CustomConf), key.ID)), key.Content)
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}
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func extractTypeFromBase64Key(key string) (string, error) {
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b, err := base64.StdEncoding.DecodeString(key)
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if err != nil || len(b) < 4 {
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return "", fmt.Errorf("invalid key format: %v", err)
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}
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keyLength := int(binary.BigEndian.Uint32(b))
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if len(b) < 4+keyLength {
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return "", fmt.Errorf("invalid key format: not enough length %d", keyLength)
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}
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return string(b[4 : 4+keyLength]), nil
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}
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const ssh2keyStart = "---- BEGIN SSH2 PUBLIC KEY ----"
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// parseKeyString parses any key string in OpenSSH or SSH2 format to clean OpenSSH string (RFC4253).
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func parseKeyString(content string) (string, error) {
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// remove whitespace at start and end
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content = strings.TrimSpace(content)
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var keyType, keyContent, keyComment string
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if strings.HasPrefix(content, ssh2keyStart) {
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// Parse SSH2 file format.
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// Transform all legal line endings to a single "\n".
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content = strings.NewReplacer("\r\n", "\n", "\r", "\n").Replace(content)
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lines := strings.Split(content, "\n")
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continuationLine := false
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for _, line := range lines {
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// Skip lines that:
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// 1) are a continuation of the previous line,
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// 2) contain ":" as that are comment lines
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// 3) contain "-" as that are begin and end tags
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if continuationLine || strings.ContainsAny(line, ":-") {
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continuationLine = strings.HasSuffix(line, "\\")
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} else {
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keyContent += line
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}
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}
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t, err := extractTypeFromBase64Key(keyContent)
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if err != nil {
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return "", fmt.Errorf("extractTypeFromBase64Key: %v", err)
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}
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keyType = t
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} else {
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if strings.Contains(content, "-----BEGIN") {
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// Convert PEM Keys to OpenSSH format
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// Transform all legal line endings to a single "\n".
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content = strings.NewReplacer("\r\n", "\n", "\r", "\n").Replace(content)
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block, _ := pem.Decode([]byte(content))
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if block == nil {
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return "", fmt.Errorf("failed to parse PEM block containing the public key")
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}
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pub, err := x509.ParsePKIXPublicKey(block.Bytes)
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if err != nil {
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var pk rsa.PublicKey
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_, err2 := asn1.Unmarshal(block.Bytes, &pk)
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if err2 != nil {
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return "", fmt.Errorf("failed to parse DER encoded public key as either PKIX or PEM RSA Key: %v %v", err, err2)
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}
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pub = &pk
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}
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sshKey, err := ssh.NewPublicKey(pub)
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if err != nil {
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return "", fmt.Errorf("unable to convert to ssh public key: %v", err)
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}
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content = string(ssh.MarshalAuthorizedKey(sshKey))
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}
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// Parse OpenSSH format.
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// Remove all newlines
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content = strings.NewReplacer("\r\n", "", "\n", "").Replace(content)
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parts := strings.SplitN(content, " ", 3)
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switch len(parts) {
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case 0:
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return "", errors.New("empty key")
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case 1:
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keyContent = parts[0]
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case 2:
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keyType = parts[0]
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keyContent = parts[1]
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default:
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keyType = parts[0]
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keyContent = parts[1]
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keyComment = parts[2]
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}
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// If keyType is not given, extract it from content. If given, validate it.
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t, err := extractTypeFromBase64Key(keyContent)
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if err != nil {
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return "", fmt.Errorf("extractTypeFromBase64Key: %v", err)
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}
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if len(keyType) == 0 {
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keyType = t
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} else if keyType != t {
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return "", fmt.Errorf("key type and content does not match: %s - %s", keyType, t)
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}
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}
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// Finally we need to check whether we can actually read the proposed key:
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_, _, _, _, err := ssh.ParseAuthorizedKey([]byte(keyType + " " + keyContent + " " + keyComment))
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if err != nil {
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return "", fmt.Errorf("invalid ssh public key: %v", err)
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}
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return keyType + " " + keyContent + " " + keyComment, nil
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}
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// writeTmpKeyFile writes key content to a temporary file
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// and returns the name of that file, along with any possible errors.
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func writeTmpKeyFile(content string) (string, error) {
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tmpFile, err := ioutil.TempFile(setting.SSH.KeyTestPath, "gitea_keytest")
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if err != nil {
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return "", fmt.Errorf("TempFile: %v", err)
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}
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defer tmpFile.Close()
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if _, err = tmpFile.WriteString(content); err != nil {
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return "", fmt.Errorf("WriteString: %v", err)
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}
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return tmpFile.Name(), nil
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}
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// SSHKeyGenParsePublicKey extracts key type and length using ssh-keygen.
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func SSHKeyGenParsePublicKey(key string) (string, int, error) {
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tmpName, err := writeTmpKeyFile(key)
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if err != nil {
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return "", 0, fmt.Errorf("writeTmpKeyFile: %v", err)
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}
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defer func() {
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if err := util.Remove(tmpName); err != nil {
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log.Warn("Unable to remove temporary key file: %s: Error: %v", tmpName, err)
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}
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}()
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stdout, stderr, err := process.GetManager().Exec("SSHKeyGenParsePublicKey", setting.SSH.KeygenPath, "-lf", tmpName)
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if err != nil {
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return "", 0, fmt.Errorf("fail to parse public key: %s - %s", err, stderr)
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}
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if strings.Contains(stdout, "is not a public key file") {
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return "", 0, ErrKeyUnableVerify{stdout}
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}
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fields := strings.Split(stdout, " ")
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if len(fields) < 4 {
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return "", 0, fmt.Errorf("invalid public key line: %s", stdout)
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}
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keyType := strings.Trim(fields[len(fields)-1], "()\r\n")
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length, err := strconv.ParseInt(fields[0], 10, 32)
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if err != nil {
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return "", 0, err
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}
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return strings.ToLower(keyType), int(length), nil
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}
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// SSHNativeParsePublicKey extracts the key type and length using the golang SSH library.
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func SSHNativeParsePublicKey(keyLine string) (string, int, error) {
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fields := strings.Fields(keyLine)
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if len(fields) < 2 {
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return "", 0, fmt.Errorf("not enough fields in public key line: %s", keyLine)
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}
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raw, err := base64.StdEncoding.DecodeString(fields[1])
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if err != nil {
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return "", 0, err
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}
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pkey, err := ssh.ParsePublicKey(raw)
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if err != nil {
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if strings.Contains(err.Error(), "ssh: unknown key algorithm") {
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return "", 0, ErrKeyUnableVerify{err.Error()}
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}
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return "", 0, fmt.Errorf("ParsePublicKey: %v", err)
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}
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// The ssh library can parse the key, so next we find out what key exactly we have.
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switch pkey.Type() {
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case ssh.KeyAlgoDSA:
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rawPub := struct {
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Name string
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P, Q, G, Y *big.Int
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}{}
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if err := ssh.Unmarshal(pkey.Marshal(), &rawPub); err != nil {
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return "", 0, err
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}
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// as per https://bugzilla.mindrot.org/show_bug.cgi?id=1647 we should never
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// see dsa keys != 1024 bit, but as it seems to work, we will not check here
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return "dsa", rawPub.P.BitLen(), nil // use P as per crypto/dsa/dsa.go (is L)
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case ssh.KeyAlgoRSA:
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rawPub := struct {
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Name string
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E *big.Int
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N *big.Int
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}{}
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if err := ssh.Unmarshal(pkey.Marshal(), &rawPub); err != nil {
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return "", 0, err
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}
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return "rsa", rawPub.N.BitLen(), nil // use N as per crypto/rsa/rsa.go (is bits)
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case ssh.KeyAlgoECDSA256:
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return "ecdsa", 256, nil
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case ssh.KeyAlgoECDSA384:
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return "ecdsa", 384, nil
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case ssh.KeyAlgoECDSA521:
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return "ecdsa", 521, nil
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case ssh.KeyAlgoED25519:
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return "ed25519", 256, nil
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case ssh.KeyAlgoSKECDSA256:
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return "ecdsa-sk", 256, nil
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case ssh.KeyAlgoSKED25519:
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return "ed25519-sk", 256, nil
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}
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return "", 0, fmt.Errorf("unsupported key length detection for type: %s", pkey.Type())
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}
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// CheckPublicKeyString checks if the given public key string is recognized by SSH.
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// It returns the actual public key line on success.
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func CheckPublicKeyString(content string) (_ string, err error) {
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if setting.SSH.Disabled {
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return "", ErrSSHDisabled{}
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}
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content, err = parseKeyString(content)
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if err != nil {
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return "", err
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}
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content = strings.TrimRight(content, "\n\r")
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if strings.ContainsAny(content, "\n\r") {
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return "", errors.New("only a single line with a single key please")
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}
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// remove any unnecessary whitespace now
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content = strings.TrimSpace(content)
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if !setting.SSH.MinimumKeySizeCheck {
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return content, nil
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}
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var (
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fnName string
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keyType string
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length int
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)
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if setting.SSH.StartBuiltinServer {
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fnName = "SSHNativeParsePublicKey"
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keyType, length, err = SSHNativeParsePublicKey(content)
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} else {
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fnName = "SSHKeyGenParsePublicKey"
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keyType, length, err = SSHKeyGenParsePublicKey(content)
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}
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if err != nil {
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return "", fmt.Errorf("%s: %v", fnName, err)
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}
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log.Trace("Key info [native: %v]: %s-%d", setting.SSH.StartBuiltinServer, keyType, length)
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if minLen, found := setting.SSH.MinimumKeySizes[keyType]; found && length >= minLen {
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return content, nil
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} else if found && length < minLen {
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return "", fmt.Errorf("key length is not enough: got %d, needs %d", length, minLen)
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}
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return "", fmt.Errorf("key type is not allowed: %s", keyType)
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}
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// appendAuthorizedKeysToFile appends new SSH keys' content to authorized_keys file.
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func appendAuthorizedKeysToFile(keys ...*PublicKey) error {
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// Don't need to rewrite this file if builtin SSH server is enabled.
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if setting.SSH.StartBuiltinServer || !setting.SSH.CreateAuthorizedKeysFile {
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return nil
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}
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sshOpLocker.Lock()
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defer sshOpLocker.Unlock()
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if setting.SSH.RootPath != "" {
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// First of ensure that the RootPath is present, and if not make it with 0700 permissions
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// This of course doesn't guarantee that this is the right directory for authorized_keys
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// but at least if it's supposed to be this directory and it doesn't exist and we're the
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// right user it will at least be created properly.
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err := os.MkdirAll(setting.SSH.RootPath, 0700)
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if err != nil {
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log.Error("Unable to MkdirAll(%s): %v", setting.SSH.RootPath, err)
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return err
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}
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}
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fPath := filepath.Join(setting.SSH.RootPath, "authorized_keys")
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f, err := os.OpenFile(fPath, 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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// Note: chmod command does not support in Windows.
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if !setting.IsWindows {
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fi, err := f.Stat()
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if err != nil {
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return err
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}
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// .ssh directory should have mode 700, and authorized_keys file should have mode 600.
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if fi.Mode().Perm() > 0600 {
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log.Error("authorized_keys file has unusual permission flags: %s - setting to -rw-------", fi.Mode().Perm().String())
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if err = f.Chmod(0600); err != nil {
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return err
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}
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}
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}
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for _, key := range keys {
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if key.Type == KeyTypePrincipal {
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continue
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}
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if _, err = f.WriteString(key.AuthorizedString()); err != nil {
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return err
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}
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}
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return nil
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}
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// checkKeyFingerprint only checks if key fingerprint has been used as public key,
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// it is OK to use same key as deploy key for multiple repositories/users.
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func checkKeyFingerprint(e Engine, fingerprint string) error {
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has, err := e.Get(&PublicKey{
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Fingerprint: fingerprint,
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})
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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{0, fingerprint, ""}
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}
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return nil
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}
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func calcFingerprintSSHKeygen(publicKeyContent string) (string, error) {
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// Calculate fingerprint.
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tmpPath, err := writeTmpKeyFile(publicKeyContent)
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if err != nil {
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return "", err
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}
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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 key file: %s: Error: %v", tmpPath, err)
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}
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}()
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stdout, stderr, err := process.GetManager().Exec("AddPublicKey", "ssh-keygen", "-lf", tmpPath)
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if err != nil {
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if strings.Contains(stderr, "is not a public key file") {
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return "", ErrKeyUnableVerify{stderr}
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}
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return "", fmt.Errorf("'ssh-keygen -lf %s' failed with error '%s': %s", tmpPath, err, stderr)
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} else if len(stdout) < 2 {
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return "", errors.New("not enough output for calculating fingerprint: " + stdout)
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}
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return strings.Split(stdout, " ")[1], nil
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}
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func calcFingerprintNative(publicKeyContent string) (string, error) {
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// Calculate fingerprint.
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pk, _, _, _, err := ssh.ParseAuthorizedKey([]byte(publicKeyContent))
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if err != nil {
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return "", err
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}
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return ssh.FingerprintSHA256(pk), nil
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}
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func calcFingerprint(publicKeyContent string) (string, error) {
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//Call the method based on configuration
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var (
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fnName, fp string
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err error
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)
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if setting.SSH.StartBuiltinServer {
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fnName = "calcFingerprintNative"
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fp, err = calcFingerprintNative(publicKeyContent)
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} else {
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fnName = "calcFingerprintSSHKeygen"
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fp, err = calcFingerprintSSHKeygen(publicKeyContent)
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}
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if err != nil {
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if IsErrKeyUnableVerify(err) {
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log.Info("%s", publicKeyContent)
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return "", err
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}
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return "", fmt.Errorf("%s: %v", fnName, err)
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}
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return fp, nil
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}
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func addKey(e Engine, key *PublicKey) (err error) {
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if len(key.Fingerprint) == 0 {
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key.Fingerprint, err = calcFingerprint(key.Content)
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if err != nil {
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return err
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}
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}
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// Save SSH key.
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if _, err = e.Insert(key); err != nil {
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return err
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}
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|
|
return appendAuthorizedKeysToFile(key)
|
|
}
|
|
|
|
// AddPublicKey adds new public key to database and authorized_keys file.
|
|
func AddPublicKey(ownerID int64, name, content string, loginSourceID int64) (*PublicKey, error) {
|
|
log.Trace(content)
|
|
|
|
fingerprint, err := calcFingerprint(content)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
sess := x.NewSession()
|
|
defer sess.Close()
|
|
if err = sess.Begin(); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if err := checkKeyFingerprint(sess, fingerprint); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Key name of same user cannot be duplicated.
|
|
has, err := sess.
|
|
Where("owner_id = ? AND name = ?", ownerID, name).
|
|
Get(new(PublicKey))
|
|
if err != nil {
|
|
return nil, err
|
|
} else if has {
|
|
return nil, ErrKeyNameAlreadyUsed{ownerID, name}
|
|
}
|
|
|
|
key := &PublicKey{
|
|
OwnerID: ownerID,
|
|
Name: name,
|
|
Fingerprint: fingerprint,
|
|
Content: content,
|
|
Mode: AccessModeWrite,
|
|
Type: KeyTypeUser,
|
|
LoginSourceID: loginSourceID,
|
|
}
|
|
if err = addKey(sess, key); err != nil {
|
|
return nil, fmt.Errorf("addKey: %v", err)
|
|
}
|
|
|
|
return key, sess.Commit()
|
|
}
|
|
|
|
// GetPublicKeyByID returns public key by given ID.
|
|
func GetPublicKeyByID(keyID int64) (*PublicKey, error) {
|
|
key := new(PublicKey)
|
|
has, err := x.
|
|
ID(keyID).
|
|
Get(key)
|
|
if err != nil {
|
|
return nil, err
|
|
} else if !has {
|
|
return nil, ErrKeyNotExist{keyID}
|
|
}
|
|
return key, nil
|
|
}
|
|
|
|
func searchPublicKeyByContentWithEngine(e Engine, content string) (*PublicKey, error) {
|
|
key := new(PublicKey)
|
|
has, err := e.
|
|
Where("content like ?", content+"%").
|
|
Get(key)
|
|
if err != nil {
|
|
return nil, err
|
|
} else if !has {
|
|
return nil, ErrKeyNotExist{}
|
|
}
|
|
return key, nil
|
|
}
|
|
|
|
// SearchPublicKeyByContent searches content as prefix (leak e-mail part)
|
|
// and returns public key found.
|
|
func SearchPublicKeyByContent(content string) (*PublicKey, error) {
|
|
return searchPublicKeyByContentWithEngine(x, content)
|
|
}
|
|
|
|
func searchPublicKeyByContentExactWithEngine(e Engine, content string) (*PublicKey, error) {
|
|
key := new(PublicKey)
|
|
has, err := e.
|
|
Where("content = ?", content).
|
|
Get(key)
|
|
if err != nil {
|
|
return nil, err
|
|
} else if !has {
|
|
return nil, ErrKeyNotExist{}
|
|
}
|
|
return key, nil
|
|
}
|
|
|
|
// SearchPublicKeyByContentExact searches content
|
|
// and returns public key found.
|
|
func SearchPublicKeyByContentExact(content string) (*PublicKey, error) {
|
|
return searchPublicKeyByContentExactWithEngine(x, content)
|
|
}
|
|
|
|
// SearchPublicKey returns a list of public keys matching the provided arguments.
|
|
func SearchPublicKey(uid int64, fingerprint string) ([]*PublicKey, error) {
|
|
keys := make([]*PublicKey, 0, 5)
|
|
cond := builder.NewCond()
|
|
if uid != 0 {
|
|
cond = cond.And(builder.Eq{"owner_id": uid})
|
|
}
|
|
if fingerprint != "" {
|
|
cond = cond.And(builder.Eq{"fingerprint": fingerprint})
|
|
}
|
|
return keys, x.Where(cond).Find(&keys)
|
|
}
|
|
|
|
// ListPublicKeys returns a list of public keys belongs to given user.
|
|
func ListPublicKeys(uid int64, listOptions ListOptions) ([]*PublicKey, error) {
|
|
sess := x.Where("owner_id = ? AND type != ?", uid, KeyTypePrincipal)
|
|
if listOptions.Page != 0 {
|
|
sess = listOptions.setSessionPagination(sess)
|
|
|
|
keys := make([]*PublicKey, 0, listOptions.PageSize)
|
|
return keys, sess.Find(&keys)
|
|
}
|
|
|
|
keys := make([]*PublicKey, 0, 5)
|
|
return keys, sess.Find(&keys)
|
|
}
|
|
|
|
// ListPublicLdapSSHKeys returns a list of synchronized public ldap ssh keys belongs to given user and login source.
|
|
func ListPublicLdapSSHKeys(uid int64, loginSourceID int64) ([]*PublicKey, error) {
|
|
keys := make([]*PublicKey, 0, 5)
|
|
return keys, x.
|
|
Where("owner_id = ? AND login_source_id = ?", uid, loginSourceID).
|
|
Find(&keys)
|
|
}
|
|
|
|
// UpdatePublicKeyUpdated updates public key use time.
|
|
func UpdatePublicKeyUpdated(id int64) error {
|
|
// Check if key exists before update as affected rows count is unreliable
|
|
// and will return 0 affected rows if two updates are made at the same time
|
|
if cnt, err := x.ID(id).Count(&PublicKey{}); err != nil {
|
|
return err
|
|
} else if cnt != 1 {
|
|
return ErrKeyNotExist{id}
|
|
}
|
|
|
|
_, err := x.ID(id).Cols("updated_unix").Update(&PublicKey{
|
|
UpdatedUnix: timeutil.TimeStampNow(),
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// deletePublicKeys does the actual key deletion but does not update authorized_keys file.
|
|
func deletePublicKeys(e Engine, keyIDs ...int64) error {
|
|
if len(keyIDs) == 0 {
|
|
return nil
|
|
}
|
|
|
|
_, err := e.In("id", keyIDs).Delete(new(PublicKey))
|
|
return err
|
|
}
|
|
|
|
// PublicKeysAreExternallyManaged returns whether the provided KeyID represents an externally managed Key
|
|
func PublicKeysAreExternallyManaged(keys []*PublicKey) ([]bool, error) {
|
|
sources := make([]*LoginSource, 0, 5)
|
|
externals := make([]bool, len(keys))
|
|
keyloop:
|
|
for i, key := range keys {
|
|
if key.LoginSourceID == 0 {
|
|
externals[i] = false
|
|
continue keyloop
|
|
}
|
|
|
|
var source *LoginSource
|
|
|
|
sourceloop:
|
|
for _, s := range sources {
|
|
if s.ID == key.LoginSourceID {
|
|
source = s
|
|
break sourceloop
|
|
}
|
|
}
|
|
|
|
if source == nil {
|
|
var err error
|
|
source, err = GetLoginSourceByID(key.LoginSourceID)
|
|
if err != nil {
|
|
if IsErrLoginSourceNotExist(err) {
|
|
externals[i] = false
|
|
sources[i] = &LoginSource{
|
|
ID: key.LoginSourceID,
|
|
}
|
|
continue keyloop
|
|
}
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
ldapSource := source.LDAP()
|
|
if ldapSource != nil &&
|
|
source.IsSyncEnabled &&
|
|
(source.Type == LoginLDAP || source.Type == LoginDLDAP) &&
|
|
len(strings.TrimSpace(ldapSource.AttributeSSHPublicKey)) > 0 {
|
|
// Disable setting SSH keys for this user
|
|
externals[i] = true
|
|
}
|
|
}
|
|
|
|
return externals, nil
|
|
}
|
|
|
|
// PublicKeyIsExternallyManaged returns whether the provided KeyID represents an externally managed Key
|
|
func PublicKeyIsExternallyManaged(id int64) (bool, error) {
|
|
key, err := GetPublicKeyByID(id)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
if key.LoginSourceID == 0 {
|
|
return false, nil
|
|
}
|
|
source, err := GetLoginSourceByID(key.LoginSourceID)
|
|
if err != nil {
|
|
if IsErrLoginSourceNotExist(err) {
|
|
return false, nil
|
|
}
|
|
return false, err
|
|
}
|
|
ldapSource := source.LDAP()
|
|
if ldapSource != nil &&
|
|
source.IsSyncEnabled &&
|
|
(source.Type == LoginLDAP || source.Type == LoginDLDAP) &&
|
|
len(strings.TrimSpace(ldapSource.AttributeSSHPublicKey)) > 0 {
|
|
// Disable setting SSH keys for this user
|
|
return true, nil
|
|
}
|
|
return false, nil
|
|
}
|
|
|
|
// DeletePublicKey deletes SSH key information both in database and authorized_keys file.
|
|
func DeletePublicKey(doer *User, id int64) (err error) {
|
|
key, err := GetPublicKeyByID(id)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Check if user has access to delete this key.
|
|
if !doer.IsAdmin && doer.ID != key.OwnerID {
|
|
return ErrKeyAccessDenied{doer.ID, key.ID, "public"}
|
|
}
|
|
|
|
sess := x.NewSession()
|
|
defer sess.Close()
|
|
if err = sess.Begin(); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err = deletePublicKeys(sess, id); err != nil {
|
|
return err
|
|
}
|
|
|
|
if err = sess.Commit(); err != nil {
|
|
return err
|
|
}
|
|
sess.Close()
|
|
|
|
if key.Type == KeyTypePrincipal {
|
|
return RewriteAllPrincipalKeys()
|
|
}
|
|
|
|
return RewriteAllPublicKeys()
|
|
}
|
|
|
|
// RewriteAllPublicKeys removes any authorized key and rewrite all keys from database again.
|
|
// Note: x.Iterate does not get latest data after insert/delete, so we have to call this function
|
|
// outside any session scope independently.
|
|
func RewriteAllPublicKeys() error {
|
|
return rewriteAllPublicKeys(x)
|
|
}
|
|
|
|
func rewriteAllPublicKeys(e Engine) error {
|
|
//Don't rewrite key if internal server
|
|
if setting.SSH.StartBuiltinServer || !setting.SSH.CreateAuthorizedKeysFile {
|
|
return nil
|
|
}
|
|
|
|
sshOpLocker.Lock()
|
|
defer sshOpLocker.Unlock()
|
|
|
|
if setting.SSH.RootPath != "" {
|
|
// First of ensure that the RootPath is present, and if not make it with 0700 permissions
|
|
// This of course doesn't guarantee that this is the right directory for authorized_keys
|
|
// but at least if it's supposed to be this directory and it doesn't exist and we're the
|
|
// right user it will at least be created properly.
|
|
err := os.MkdirAll(setting.SSH.RootPath, 0700)
|
|
if err != nil {
|
|
log.Error("Unable to MkdirAll(%s): %v", setting.SSH.RootPath, err)
|
|
return err
|
|
}
|
|
}
|
|
|
|
fPath := filepath.Join(setting.SSH.RootPath, "authorized_keys")
|
|
tmpPath := fPath + ".tmp"
|
|
t, err := os.OpenFile(tmpPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0600)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer func() {
|
|
t.Close()
|
|
if err := util.Remove(tmpPath); err != nil {
|
|
log.Warn("Unable to remove temporary authorized keys file: %s: Error: %v", tmpPath, err)
|
|
}
|
|
}()
|
|
|
|
if setting.SSH.AuthorizedKeysBackup {
|
|
isExist, err := util.IsExist(fPath)
|
|
if err != nil {
|
|
log.Error("Unable to check if %s exists. Error: %v", fPath, err)
|
|
return err
|
|
}
|
|
if isExist {
|
|
bakPath := fmt.Sprintf("%s_%d.gitea_bak", fPath, time.Now().Unix())
|
|
if err = util.CopyFile(fPath, bakPath); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
if err := regeneratePublicKeys(e, t); err != nil {
|
|
return err
|
|
}
|
|
|
|
t.Close()
|
|
return os.Rename(tmpPath, fPath)
|
|
}
|
|
|
|
// RegeneratePublicKeys regenerates the authorized_keys file
|
|
func RegeneratePublicKeys(t io.StringWriter) error {
|
|
return regeneratePublicKeys(x, t)
|
|
}
|
|
|
|
func regeneratePublicKeys(e Engine, t io.StringWriter) error {
|
|
if err := e.Where("type != ?", KeyTypePrincipal).Iterate(new(PublicKey), func(idx int, bean interface{}) (err error) {
|
|
_, err = t.WriteString((bean.(*PublicKey)).AuthorizedString())
|
|
return err
|
|
}); err != nil {
|
|
return err
|
|
}
|
|
|
|
fPath := filepath.Join(setting.SSH.RootPath, "authorized_keys")
|
|
isExist, err := util.IsExist(fPath)
|
|
if err != nil {
|
|
log.Error("Unable to check if %s exists. Error: %v", fPath, err)
|
|
return err
|
|
}
|
|
if isExist {
|
|
f, err := os.Open(fPath)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
scanner := bufio.NewScanner(f)
|
|
for scanner.Scan() {
|
|
line := scanner.Text()
|
|
if strings.HasPrefix(line, tplCommentPrefix) {
|
|
scanner.Scan()
|
|
continue
|
|
}
|
|
_, err = t.WriteString(line + "\n")
|
|
if err != nil {
|
|
f.Close()
|
|
return err
|
|
}
|
|
}
|
|
f.Close()
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// ________ .__ ____ __.
|
|
// \______ \ ____ ______ | | ____ ___.__.| |/ _|____ ___.__.
|
|
// | | \_/ __ \\____ \| | / _ < | || <_/ __ < | |
|
|
// | ` \ ___/| |_> > |_( <_> )___ || | \ ___/\___ |
|
|
// /_______ /\___ > __/|____/\____// ____||____|__ \___ > ____|
|
|
// \/ \/|__| \/ \/ \/\/
|
|
|
|
// DeployKey represents deploy key information and its relation with repository.
|
|
type DeployKey struct {
|
|
ID int64 `xorm:"pk autoincr"`
|
|
KeyID int64 `xorm:"UNIQUE(s) INDEX"`
|
|
RepoID int64 `xorm:"UNIQUE(s) INDEX"`
|
|
Name string
|
|
Fingerprint string
|
|
Content string `xorm:"-"`
|
|
|
|
Mode AccessMode `xorm:"NOT NULL DEFAULT 1"`
|
|
|
|
CreatedUnix timeutil.TimeStamp `xorm:"created"`
|
|
UpdatedUnix timeutil.TimeStamp `xorm:"updated"`
|
|
HasRecentActivity bool `xorm:"-"`
|
|
HasUsed bool `xorm:"-"`
|
|
}
|
|
|
|
// AfterLoad is invoked from XORM after setting the values of all fields of this object.
|
|
func (key *DeployKey) AfterLoad() {
|
|
key.HasUsed = key.UpdatedUnix > key.CreatedUnix
|
|
key.HasRecentActivity = key.UpdatedUnix.AddDuration(7*24*time.Hour) > timeutil.TimeStampNow()
|
|
}
|
|
|
|
// GetContent gets associated public key content.
|
|
func (key *DeployKey) GetContent() error {
|
|
pkey, err := GetPublicKeyByID(key.KeyID)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
key.Content = pkey.Content
|
|
return nil
|
|
}
|
|
|
|
// IsReadOnly checks if the key can only be used for read operations
|
|
func (key *DeployKey) IsReadOnly() bool {
|
|
return key.Mode == AccessModeRead
|
|
}
|
|
|
|
func checkDeployKey(e Engine, keyID, repoID int64, name string) error {
|
|
// Note: We want error detail, not just true or false here.
|
|
has, err := e.
|
|
Where("key_id = ? AND repo_id = ?", keyID, repoID).
|
|
Get(new(DeployKey))
|
|
if err != nil {
|
|
return err
|
|
} else if has {
|
|
return ErrDeployKeyAlreadyExist{keyID, repoID}
|
|
}
|
|
|
|
has, err = e.
|
|
Where("repo_id = ? AND name = ?", repoID, name).
|
|
Get(new(DeployKey))
|
|
if err != nil {
|
|
return err
|
|
} else if has {
|
|
return ErrDeployKeyNameAlreadyUsed{repoID, name}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// addDeployKey adds new key-repo relation.
|
|
func addDeployKey(e *xorm.Session, keyID, repoID int64, name, fingerprint string, mode AccessMode) (*DeployKey, error) {
|
|
if err := checkDeployKey(e, keyID, repoID, name); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
key := &DeployKey{
|
|
KeyID: keyID,
|
|
RepoID: repoID,
|
|
Name: name,
|
|
Fingerprint: fingerprint,
|
|
Mode: mode,
|
|
}
|
|
_, err := e.Insert(key)
|
|
return key, err
|
|
}
|
|
|
|
// HasDeployKey returns true if public key is a deploy key of given repository.
|
|
func HasDeployKey(keyID, repoID int64) bool {
|
|
has, _ := x.
|
|
Where("key_id = ? AND repo_id = ?", keyID, repoID).
|
|
Get(new(DeployKey))
|
|
return has
|
|
}
|
|
|
|
// AddDeployKey add new deploy key to database and authorized_keys file.
|
|
func AddDeployKey(repoID int64, name, content string, readOnly bool) (*DeployKey, error) {
|
|
fingerprint, err := calcFingerprint(content)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
accessMode := AccessModeRead
|
|
if !readOnly {
|
|
accessMode = AccessModeWrite
|
|
}
|
|
|
|
sess := x.NewSession()
|
|
defer sess.Close()
|
|
if err = sess.Begin(); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
pkey := &PublicKey{
|
|
Fingerprint: fingerprint,
|
|
}
|
|
has, err := sess.Get(pkey)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if has {
|
|
if pkey.Type != KeyTypeDeploy {
|
|
return nil, ErrKeyAlreadyExist{0, fingerprint, ""}
|
|
}
|
|
} else {
|
|
// First time use this deploy key.
|
|
pkey.Mode = accessMode
|
|
pkey.Type = KeyTypeDeploy
|
|
pkey.Content = content
|
|
pkey.Name = name
|
|
if err = addKey(sess, pkey); err != nil {
|
|
return nil, fmt.Errorf("addKey: %v", err)
|
|
}
|
|
}
|
|
|
|
key, err := addDeployKey(sess, pkey.ID, repoID, name, pkey.Fingerprint, accessMode)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return key, sess.Commit()
|
|
}
|
|
|
|
// GetDeployKeyByID returns deploy key by given ID.
|
|
func GetDeployKeyByID(id int64) (*DeployKey, error) {
|
|
return getDeployKeyByID(x, id)
|
|
}
|
|
|
|
func getDeployKeyByID(e Engine, id int64) (*DeployKey, error) {
|
|
key := new(DeployKey)
|
|
has, err := e.ID(id).Get(key)
|
|
if err != nil {
|
|
return nil, err
|
|
} else if !has {
|
|
return nil, ErrDeployKeyNotExist{id, 0, 0}
|
|
}
|
|
return key, nil
|
|
}
|
|
|
|
// GetDeployKeyByRepo returns deploy key by given public key ID and repository ID.
|
|
func GetDeployKeyByRepo(keyID, repoID int64) (*DeployKey, error) {
|
|
return getDeployKeyByRepo(x, keyID, repoID)
|
|
}
|
|
|
|
func getDeployKeyByRepo(e Engine, keyID, repoID int64) (*DeployKey, error) {
|
|
key := &DeployKey{
|
|
KeyID: keyID,
|
|
RepoID: repoID,
|
|
}
|
|
has, err := e.Get(key)
|
|
if err != nil {
|
|
return nil, err
|
|
} else if !has {
|
|
return nil, ErrDeployKeyNotExist{0, keyID, repoID}
|
|
}
|
|
return key, nil
|
|
}
|
|
|
|
// UpdateDeployKeyCols updates deploy key information in the specified columns.
|
|
func UpdateDeployKeyCols(key *DeployKey, cols ...string) error {
|
|
_, err := x.ID(key.ID).Cols(cols...).Update(key)
|
|
return err
|
|
}
|
|
|
|
// UpdateDeployKey updates deploy key information.
|
|
func UpdateDeployKey(key *DeployKey) error {
|
|
_, err := x.ID(key.ID).AllCols().Update(key)
|
|
return err
|
|
}
|
|
|
|
// DeleteDeployKey deletes deploy key from its repository authorized_keys file if needed.
|
|
func DeleteDeployKey(doer *User, id int64) error {
|
|
sess := x.NewSession()
|
|
defer sess.Close()
|
|
if err := sess.Begin(); err != nil {
|
|
return err
|
|
}
|
|
if err := deleteDeployKey(sess, doer, id); err != nil {
|
|
return err
|
|
}
|
|
return sess.Commit()
|
|
}
|
|
|
|
func deleteDeployKey(sess Engine, doer *User, id int64) error {
|
|
key, err := getDeployKeyByID(sess, id)
|
|
if err != nil {
|
|
if IsErrDeployKeyNotExist(err) {
|
|
return nil
|
|
}
|
|
return fmt.Errorf("GetDeployKeyByID: %v", err)
|
|
}
|
|
|
|
// Check if user has access to delete this key.
|
|
if !doer.IsAdmin {
|
|
repo, err := getRepositoryByID(sess, key.RepoID)
|
|
if err != nil {
|
|
return fmt.Errorf("GetRepositoryByID: %v", err)
|
|
}
|
|
has, err := isUserRepoAdmin(sess, repo, doer)
|
|
if err != nil {
|
|
return fmt.Errorf("GetUserRepoPermission: %v", err)
|
|
} else if !has {
|
|
return ErrKeyAccessDenied{doer.ID, key.ID, "deploy"}
|
|
}
|
|
}
|
|
|
|
if _, err = sess.ID(key.ID).Delete(new(DeployKey)); err != nil {
|
|
return fmt.Errorf("delete deploy key [%d]: %v", key.ID, err)
|
|
}
|
|
|
|
// Check if this is the last reference to same key content.
|
|
has, err := sess.
|
|
Where("key_id = ?", key.KeyID).
|
|
Get(new(DeployKey))
|
|
if err != nil {
|
|
return err
|
|
} else if !has {
|
|
if err = deletePublicKeys(sess, key.KeyID); err != nil {
|
|
return err
|
|
}
|
|
|
|
// after deleted the public keys, should rewrite the public keys file
|
|
if err = rewriteAllPublicKeys(sess); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// ListDeployKeys returns all deploy keys by given repository ID.
|
|
func ListDeployKeys(repoID int64, listOptions ListOptions) ([]*DeployKey, error) {
|
|
return listDeployKeys(x, repoID, listOptions)
|
|
}
|
|
|
|
func listDeployKeys(e Engine, repoID int64, listOptions ListOptions) ([]*DeployKey, error) {
|
|
sess := e.Where("repo_id = ?", repoID)
|
|
if listOptions.Page != 0 {
|
|
sess = listOptions.setSessionPagination(sess)
|
|
|
|
keys := make([]*DeployKey, 0, listOptions.PageSize)
|
|
return keys, sess.Find(&keys)
|
|
}
|
|
|
|
keys := make([]*DeployKey, 0, 5)
|
|
return keys, sess.Find(&keys)
|
|
}
|
|
|
|
// SearchDeployKeys returns a list of deploy keys matching the provided arguments.
|
|
func SearchDeployKeys(repoID int64, keyID int64, fingerprint string) ([]*DeployKey, error) {
|
|
keys := make([]*DeployKey, 0, 5)
|
|
cond := builder.NewCond()
|
|
if repoID != 0 {
|
|
cond = cond.And(builder.Eq{"repo_id": repoID})
|
|
}
|
|
if keyID != 0 {
|
|
cond = cond.And(builder.Eq{"key_id": keyID})
|
|
}
|
|
if fingerprint != "" {
|
|
cond = cond.And(builder.Eq{"fingerprint": fingerprint})
|
|
}
|
|
return keys, x.Where(cond).Find(&keys)
|
|
}
|
|
|
|
// __________ .__ .__ .__
|
|
// \______ _______|__| ____ ____ |_____________ | | ______
|
|
// | ___\_ __ | |/ \_/ ___\| \____ \__ \ | | / ___/
|
|
// | | | | \| | | \ \___| | |_> / __ \| |__\___ \
|
|
// |____| |__| |__|___| /\___ |__| __(____ |____/____ >
|
|
// \/ \/ |__| \/ \/
|
|
|
|
// AddPrincipalKey adds new principal to database and authorized_principals file.
|
|
func AddPrincipalKey(ownerID int64, content string, loginSourceID int64) (*PublicKey, error) {
|
|
sess := x.NewSession()
|
|
defer sess.Close()
|
|
if err := sess.Begin(); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Principals cannot be duplicated.
|
|
has, err := sess.
|
|
Where("content = ? AND type = ?", content, KeyTypePrincipal).
|
|
Get(new(PublicKey))
|
|
if err != nil {
|
|
return nil, err
|
|
} else if has {
|
|
return nil, ErrKeyAlreadyExist{0, "", content}
|
|
}
|
|
|
|
key := &PublicKey{
|
|
OwnerID: ownerID,
|
|
Name: content,
|
|
Content: content,
|
|
Mode: AccessModeWrite,
|
|
Type: KeyTypePrincipal,
|
|
LoginSourceID: loginSourceID,
|
|
}
|
|
if err = addPrincipalKey(sess, key); err != nil {
|
|
return nil, fmt.Errorf("addKey: %v", err)
|
|
}
|
|
|
|
if err = sess.Commit(); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
sess.Close()
|
|
|
|
return key, RewriteAllPrincipalKeys()
|
|
}
|
|
|
|
func addPrincipalKey(e Engine, key *PublicKey) (err error) {
|
|
// Save Key representing a principal.
|
|
if _, err = e.Insert(key); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// CheckPrincipalKeyString strips spaces and returns an error if the given principal contains newlines
|
|
func CheckPrincipalKeyString(user *User, content string) (_ string, err error) {
|
|
if setting.SSH.Disabled {
|
|
return "", ErrSSHDisabled{}
|
|
}
|
|
|
|
content = strings.TrimSpace(content)
|
|
if strings.ContainsAny(content, "\r\n") {
|
|
return "", errors.New("only a single line with a single principal please")
|
|
}
|
|
|
|
// check all the allowed principals, email, username or anything
|
|
// if any matches, return ok
|
|
for _, v := range setting.SSH.AuthorizedPrincipalsAllow {
|
|
switch v {
|
|
case "anything":
|
|
return content, nil
|
|
case "email":
|
|
emails, err := GetEmailAddresses(user.ID)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
for _, email := range emails {
|
|
if !email.IsActivated {
|
|
continue
|
|
}
|
|
if content == email.Email {
|
|
return content, nil
|
|
}
|
|
}
|
|
|
|
case "username":
|
|
if content == user.Name {
|
|
return content, nil
|
|
}
|
|
}
|
|
}
|
|
|
|
return "", fmt.Errorf("didn't match allowed principals: %s", setting.SSH.AuthorizedPrincipalsAllow)
|
|
}
|
|
|
|
// RewriteAllPrincipalKeys removes any authorized principal and rewrite all keys from database again.
|
|
// Note: x.Iterate does not get latest data after insert/delete, so we have to call this function
|
|
// outside any session scope independently.
|
|
func RewriteAllPrincipalKeys() error {
|
|
return rewriteAllPrincipalKeys(x)
|
|
}
|
|
|
|
func rewriteAllPrincipalKeys(e Engine) error {
|
|
// Don't rewrite key if internal server
|
|
if setting.SSH.StartBuiltinServer || !setting.SSH.CreateAuthorizedPrincipalsFile {
|
|
return nil
|
|
}
|
|
|
|
sshOpLocker.Lock()
|
|
defer sshOpLocker.Unlock()
|
|
|
|
if setting.SSH.RootPath != "" {
|
|
// First of ensure that the RootPath is present, and if not make it with 0700 permissions
|
|
// This of course doesn't guarantee that this is the right directory for authorized_keys
|
|
// but at least if it's supposed to be this directory and it doesn't exist and we're the
|
|
// right user it will at least be created properly.
|
|
err := os.MkdirAll(setting.SSH.RootPath, 0700)
|
|
if err != nil {
|
|
log.Error("Unable to MkdirAll(%s): %v", setting.SSH.RootPath, err)
|
|
return err
|
|
}
|
|
}
|
|
|
|
fPath := filepath.Join(setting.SSH.RootPath, authorizedPrincipalsFile)
|
|
tmpPath := fPath + ".tmp"
|
|
t, err := os.OpenFile(tmpPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0600)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer func() {
|
|
t.Close()
|
|
os.Remove(tmpPath)
|
|
}()
|
|
|
|
if setting.SSH.AuthorizedPrincipalsBackup {
|
|
isExist, err := util.IsExist(fPath)
|
|
if err != nil {
|
|
log.Error("Unable to check if %s exists. Error: %v", fPath, err)
|
|
return err
|
|
}
|
|
if isExist {
|
|
bakPath := fmt.Sprintf("%s_%d.gitea_bak", fPath, time.Now().Unix())
|
|
if err = util.CopyFile(fPath, bakPath); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
if err := regeneratePrincipalKeys(e, t); err != nil {
|
|
return err
|
|
}
|
|
|
|
t.Close()
|
|
return os.Rename(tmpPath, fPath)
|
|
}
|
|
|
|
// ListPrincipalKeys returns a list of principals belongs to given user.
|
|
func ListPrincipalKeys(uid int64, listOptions ListOptions) ([]*PublicKey, error) {
|
|
sess := x.Where("owner_id = ? AND type = ?", uid, KeyTypePrincipal)
|
|
if listOptions.Page != 0 {
|
|
sess = listOptions.setSessionPagination(sess)
|
|
|
|
keys := make([]*PublicKey, 0, listOptions.PageSize)
|
|
return keys, sess.Find(&keys)
|
|
}
|
|
|
|
keys := make([]*PublicKey, 0, 5)
|
|
return keys, sess.Find(&keys)
|
|
}
|
|
|
|
// RegeneratePrincipalKeys regenerates the authorized_principals file
|
|
func RegeneratePrincipalKeys(t io.StringWriter) error {
|
|
return regeneratePrincipalKeys(x, t)
|
|
}
|
|
|
|
func regeneratePrincipalKeys(e Engine, t io.StringWriter) error {
|
|
if err := e.Where("type = ?", KeyTypePrincipal).Iterate(new(PublicKey), func(idx int, bean interface{}) (err error) {
|
|
_, err = t.WriteString((bean.(*PublicKey)).AuthorizedString())
|
|
return err
|
|
}); err != nil {
|
|
return err
|
|
}
|
|
|
|
fPath := filepath.Join(setting.SSH.RootPath, authorizedPrincipalsFile)
|
|
isExist, err := util.IsExist(fPath)
|
|
if err != nil {
|
|
log.Error("Unable to check if %s exists. Error: %v", fPath, err)
|
|
return err
|
|
}
|
|
if isExist {
|
|
f, err := os.Open(fPath)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
scanner := bufio.NewScanner(f)
|
|
for scanner.Scan() {
|
|
line := scanner.Text()
|
|
if strings.HasPrefix(line, tplCommentPrefix) {
|
|
scanner.Scan()
|
|
continue
|
|
}
|
|
_, err = t.WriteString(line + "\n")
|
|
if err != nil {
|
|
f.Close()
|
|
return err
|
|
}
|
|
}
|
|
f.Close()
|
|
}
|
|
return nil
|
|
}
|