1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
|
// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package models
import (
"strings"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/process"
"code.gitea.io/gitea/modules/setting"
)
type signingMode string
const (
never signingMode = "never"
always signingMode = "always"
pubkey signingMode = "pubkey"
twofa signingMode = "twofa"
parentSigned signingMode = "parentsigned"
baseSigned signingMode = "basesigned"
headSigned signingMode = "headsigned"
commitsSigned signingMode = "commitssigned"
approved signingMode = "approved"
noKey signingMode = "nokey"
)
func signingModeFromStrings(modeStrings []string) []signingMode {
returnable := make([]signingMode, 0, len(modeStrings))
for _, mode := range modeStrings {
signMode := signingMode(strings.ToLower(mode))
switch signMode {
case never:
return []signingMode{never}
case always:
return []signingMode{always}
case pubkey:
fallthrough
case twofa:
fallthrough
case parentSigned:
fallthrough
case baseSigned:
fallthrough
case headSigned:
fallthrough
case approved:
fallthrough
case commitsSigned:
returnable = append(returnable, signMode)
}
}
if len(returnable) == 0 {
return []signingMode{never}
}
return returnable
}
func signingKey(repoPath string) string {
if setting.Repository.Signing.SigningKey == "none" {
return ""
}
if setting.Repository.Signing.SigningKey == "default" || setting.Repository.Signing.SigningKey == "" {
// Can ignore the error here as it means that commit.gpgsign is not set
value, _ := git.NewCommand("config", "--get", "commit.gpgsign").RunInDir(repoPath)
sign, valid := git.ParseBool(strings.TrimSpace(value))
if !sign || !valid {
return ""
}
signingKey, _ := git.NewCommand("config", "--get", "user.signingkey").RunInDir(repoPath)
return strings.TrimSpace(signingKey)
}
return setting.Repository.Signing.SigningKey
}
// PublicSigningKey gets the public signing key within a provided repository directory
func PublicSigningKey(repoPath string) (string, error) {
signingKey := signingKey(repoPath)
if signingKey == "" {
return "", nil
}
content, stderr, err := process.GetManager().ExecDir(-1, repoPath,
"gpg --export -a", "gpg", "--export", "-a", signingKey)
if err != nil {
log.Error("Unable to get default signing key in %s: %s, %s, %v", repoPath, signingKey, stderr, err)
return "", err
}
return content, nil
}
// SignInitialCommit determines if we should sign the initial commit to this repository
func SignInitialCommit(repoPath string, u *User) (bool, string, error) {
rules := signingModeFromStrings(setting.Repository.Signing.InitialCommit)
signingKey := signingKey(repoPath)
if signingKey == "" {
return false, "", &ErrWontSign{noKey}
}
for _, rule := range rules {
switch rule {
case never:
return false, "", &ErrWontSign{never}
case always:
break
case pubkey:
keys, err := ListGPGKeys(u.ID, ListOptions{})
if err != nil {
return false, "", err
}
if len(keys) == 0 {
return false, "", &ErrWontSign{pubkey}
}
case twofa:
twofaModel, err := GetTwoFactorByUID(u.ID)
if err != nil && !IsErrTwoFactorNotEnrolled(err) {
return false, "", err
}
if twofaModel == nil {
return false, "", &ErrWontSign{twofa}
}
}
}
return true, signingKey, nil
}
// SignWikiCommit determines if we should sign the commits to this repository wiki
func (repo *Repository) SignWikiCommit(u *User) (bool, string, error) {
rules := signingModeFromStrings(setting.Repository.Signing.Wiki)
signingKey := signingKey(repo.WikiPath())
if signingKey == "" {
return false, "", &ErrWontSign{noKey}
}
for _, rule := range rules {
switch rule {
case never:
return false, "", &ErrWontSign{never}
case always:
break
case pubkey:
keys, err := ListGPGKeys(u.ID, ListOptions{})
if err != nil {
return false, "", err
}
if len(keys) == 0 {
return false, "", &ErrWontSign{pubkey}
}
case twofa:
twofaModel, err := GetTwoFactorByUID(u.ID)
if err != nil && !IsErrTwoFactorNotEnrolled(err) {
return false, "", err
}
if twofaModel == nil {
return false, "", &ErrWontSign{twofa}
}
case parentSigned:
gitRepo, err := git.OpenRepository(repo.WikiPath())
if err != nil {
return false, "", err
}
defer gitRepo.Close()
commit, err := gitRepo.GetCommit("HEAD")
if err != nil {
return false, "", err
}
if commit.Signature == nil {
return false, "", &ErrWontSign{parentSigned}
}
verification := ParseCommitWithSignature(commit)
if !verification.Verified {
return false, "", &ErrWontSign{parentSigned}
}
}
}
return true, signingKey, nil
}
// SignCRUDAction determines if we should sign a CRUD commit to this repository
func (repo *Repository) SignCRUDAction(u *User, tmpBasePath, parentCommit string) (bool, string, error) {
rules := signingModeFromStrings(setting.Repository.Signing.CRUDActions)
signingKey := signingKey(repo.RepoPath())
if signingKey == "" {
return false, "", &ErrWontSign{noKey}
}
for _, rule := range rules {
switch rule {
case never:
return false, "", &ErrWontSign{never}
case always:
break
case pubkey:
keys, err := ListGPGKeys(u.ID, ListOptions{})
if err != nil {
return false, "", err
}
if len(keys) == 0 {
return false, "", &ErrWontSign{pubkey}
}
case twofa:
twofaModel, err := GetTwoFactorByUID(u.ID)
if err != nil && !IsErrTwoFactorNotEnrolled(err) {
return false, "", err
}
if twofaModel == nil {
return false, "", &ErrWontSign{twofa}
}
case parentSigned:
gitRepo, err := git.OpenRepository(tmpBasePath)
if err != nil {
return false, "", err
}
defer gitRepo.Close()
commit, err := gitRepo.GetCommit(parentCommit)
if err != nil {
return false, "", err
}
if commit.Signature == nil {
return false, "", &ErrWontSign{parentSigned}
}
verification := ParseCommitWithSignature(commit)
if !verification.Verified {
return false, "", &ErrWontSign{parentSigned}
}
}
}
return true, signingKey, nil
}
|
