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
|
/* t-edit-sign.c - Regression test.
* Copyright (C) 2000 Werner Koch (dd9jn)
* Copyright (C) 2001, 2002, 2003, 2004, 2021 g10 Code GmbH
* Software engineering by Ingo Klöcker <dev@ingo-kloecker.de>
*
* This file is part of GPGME.
*
* GPGME is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* GPGME is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, see <https://gnu.org/licenses/>.
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
/* We need to include config.h so that we know whether we are building
with large file system (LFS) support. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include <unistd.h>
#include <errno.h>
#include <gpgme.h>
#include "t-support.h"
static void
flush_data (gpgme_data_t dh)
{
char buf[100];
int ret;
ret = gpgme_data_seek (dh, 0, SEEK_SET);
if (ret)
fail_if_err (gpgme_error_from_errno (errno));
while ((ret = gpgme_data_read (dh, buf, 100)) > 0)
fwrite (buf, ret, 1, stdout);
if (ret < 0)
fail_if_err (gpgme_error_from_errno (errno));
}
gpgme_error_t
interact_fnc (void *opaque, const char *status, const char *args, int fd)
{
const char *result = NULL;
gpgme_data_t out = (gpgme_data_t) opaque;
fputs ("[-- Response --]\n", stdout);
flush_data (out);
fprintf (stdout, "[-- Code: %s, %s --]\n", status, args);
if (fd >= 0)
{
if (!strcmp (args, "keyedit.prompt"))
{
static int step = 0;
switch (step)
{
case 0:
result = "fpr";
break;
case 1:
/* This fixes the primary user ID so the keylisting
tests will have predictable output. */
result = "1";
break;
case 2:
result = "sign";
break;
default:
result = "quit";
break;
}
step++;
}
else if (!strcmp (args, "keyedit.save.okay"))
result = "Y";
else if (!strcmp (args, "sign_uid.okay"))
result = "Y";
}
if (result)
{
gpgme_io_writen (fd, result, strlen (result));
gpgme_io_writen (fd, "\n", 1);
}
return 0;
}
void
sign_key (const char *key_fpr, const char *signer_fpr)
{
gpgme_ctx_t ctx;
gpgme_error_t err;
gpgme_data_t out = NULL;
gpgme_key_t signing_key = NULL;
gpgme_key_t key = NULL;
char *agent_info;
err = gpgme_new (&ctx);
fail_if_err (err);
agent_info = getenv("GPG_AGENT_INFO");
if (!(agent_info && strchr (agent_info, ':')))
gpgme_set_passphrase_cb (ctx, passphrase_cb, 0);
err = gpgme_get_key (ctx, signer_fpr, &signing_key, 1);
fail_if_err (err);
err = gpgme_signers_add (ctx, signing_key);
fail_if_err (err);
err = gpgme_set_ctx_flag (ctx, "cert-expire", "42d");
fail_if_err (err);
err = gpgme_get_key (ctx, key_fpr, &key, 0);
fail_if_err (err);
err = gpgme_data_new (&out);
fail_if_err (err);
err = gpgme_op_interact (ctx, key, 0, interact_fnc, out, out);
fail_if_err (err);
fputs ("[-- Last response --]\n", stdout);
flush_data (out);
gpgme_data_release (out);
gpgme_key_unref (key);
gpgme_key_unref (signing_key);
gpgme_release (ctx);
}
void
verify_key_signature (const char *key_fpr, const char *signer_keyid)
{
gpgme_ctx_t ctx;
gpgme_error_t err;
gpgme_key_t signed_key = NULL;
gpgme_user_id_t signed_uid = NULL;
gpgme_key_sig_t key_sig = NULL;
int mode;
err = gpgme_new (&ctx);
fail_if_err (err);
mode = gpgme_get_keylist_mode (ctx);
mode |= GPGME_KEYLIST_MODE_SIGS;
err = gpgme_set_keylist_mode (ctx, mode);
fail_if_err (err);
err = gpgme_get_key (ctx, key_fpr, &signed_key, 0);
fail_if_err (err);
signed_uid = signed_key->uids;
if (!signed_uid)
{
fprintf (stderr, "Signed key has no user IDs\n");
exit (1);
}
if (!signed_uid->signatures || !signed_uid->signatures->next)
{
fprintf (stderr, "Signed user ID has less signatures than expected\n");
exit (1);
}
key_sig = signed_uid->signatures->next;
if (strcmp (signer_keyid, key_sig->keyid))
{
fprintf (stderr, "Unexpected key ID in second user ID sig: %s\n",
key_sig->keyid);
exit (1);
}
if (key_sig->expires != key_sig->timestamp + 42*86400L)
{
fprintf (stderr, "Key signature unexpectedly does not expire in 42 days\n");
fprintf (stderr, "signature date: %ld, expiration date: %ld\n",
key_sig->timestamp, key_sig->expires);
exit (1);
}
gpgme_key_unref (signed_key);
gpgme_release (ctx);
}
int
main (int argc, char **argv)
{
const char *signer_fpr = "A0FF4590BB6122EDEF6E3C542D727CC768697734"; /* Alpha Test */
const char *signer_keyid = signer_fpr + strlen(signer_fpr) - 16;
const char *key_fpr = "D695676BDCEDCC2CDD6152BCFE180B1DA9E3B0B2"; /* Bravo Test */
(void)argc;
(void)argv;
init_gpgme (GPGME_PROTOCOL_OpenPGP);
sign_key (key_fpr, signer_fpr);
verify_key_signature (key_fpr, signer_keyid);
return 0;
}
|
