Line data Source code
1 : /* run-verify.c - Helper to perform a verify operation
2 : Copyright (C) 2009 g10 Code GmbH
3 :
4 : This file is part of GPGME.
5 :
6 : GPGME is free software; you can redistribute it and/or modify it
7 : under the terms of the GNU Lesser General Public License as
8 : published by the Free Software Foundation; either version 2.1 of
9 : the License, or (at your option) any later version.
10 :
11 : GPGME is distributed in the hope that it will be useful, but
12 : WITHOUT ANY WARRANTY; without even the implied warranty of
13 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 : Lesser General Public License for more details.
15 :
16 : You should have received a copy of the GNU Lesser General Public
17 : License along with this program; if not, see <https://www.gnu.org/licenses/>.
18 : */
19 :
20 : /* We need to include config.h so that we know whether we are building
21 : with large file system (LFS) support. */
22 : #ifdef HAVE_CONFIG_H
23 : #include <config.h>
24 : #endif
25 :
26 : #include <stdlib.h>
27 : #include <stdio.h>
28 : #include <string.h>
29 : #include <time.h>
30 :
31 : #include <gpgme.h>
32 :
33 : #define PGM "run-verify"
34 :
35 : #include "run-support.h"
36 :
37 :
38 : static int verbose;
39 :
40 :
41 : static const char *
42 0 : isotimestr (unsigned long value)
43 : {
44 : time_t t;
45 : static char buffer[25+5];
46 : struct tm *tp;
47 :
48 0 : if (!value)
49 0 : return "none";
50 0 : t = value;
51 :
52 0 : tp = gmtime (&t);
53 0 : snprintf (buffer, sizeof buffer, "%04d-%02d-%02d %02d:%02d:%02d",
54 0 : 1900+tp->tm_year, tp->tm_mon+1, tp->tm_mday,
55 : tp->tm_hour, tp->tm_min, tp->tm_sec);
56 0 : return buffer;
57 : }
58 :
59 :
60 : static gpg_error_t
61 0 : status_cb (void *opaque, const char *keyword, const char *value)
62 : {
63 : (void)opaque;
64 0 : fprintf (stderr, "status_cb: %s %s\n", keyword, value);
65 0 : return 0;
66 : }
67 :
68 :
69 : static void
70 0 : print_summary (gpgme_sigsum_t summary)
71 : {
72 0 : if ( (summary & GPGME_SIGSUM_VALID ))
73 0 : fputs (" valid", stdout);
74 0 : if ( (summary & GPGME_SIGSUM_GREEN ))
75 0 : fputs (" green", stdout);
76 0 : if ( (summary & GPGME_SIGSUM_RED ))
77 0 : fputs (" red", stdout);
78 0 : if ( (summary & GPGME_SIGSUM_KEY_REVOKED))
79 0 : fputs (" revoked", stdout);
80 0 : if ( (summary & GPGME_SIGSUM_KEY_EXPIRED))
81 0 : fputs (" key-expired", stdout);
82 0 : if ( (summary & GPGME_SIGSUM_SIG_EXPIRED))
83 0 : fputs (" sig-expired", stdout);
84 0 : if ( (summary & GPGME_SIGSUM_KEY_MISSING))
85 0 : fputs (" key-missing", stdout);
86 0 : if ( (summary & GPGME_SIGSUM_CRL_MISSING))
87 0 : fputs (" crl-missing", stdout);
88 0 : if ( (summary & GPGME_SIGSUM_CRL_TOO_OLD))
89 0 : fputs (" crl-too-old", stdout);
90 0 : if ( (summary & GPGME_SIGSUM_BAD_POLICY ))
91 0 : fputs (" bad-policy", stdout);
92 0 : if ( (summary & GPGME_SIGSUM_SYS_ERROR ))
93 0 : fputs (" sys-error", stdout);
94 0 : }
95 :
96 : static void
97 0 : print_validity (gpgme_validity_t val)
98 : {
99 0 : const char *s = NULL;
100 :
101 0 : switch (val)
102 : {
103 0 : case GPGME_VALIDITY_UNKNOWN: s = "unknown"; break;
104 0 : case GPGME_VALIDITY_UNDEFINED:s = "undefined"; break;
105 0 : case GPGME_VALIDITY_NEVER: s = "never"; break;
106 0 : case GPGME_VALIDITY_MARGINAL: s = "marginal"; break;
107 0 : case GPGME_VALIDITY_FULL: s = "full"; break;
108 0 : case GPGME_VALIDITY_ULTIMATE: s = "ultimate"; break;
109 : }
110 0 : if (s)
111 0 : fputs (s, stdout);
112 : else
113 0 : printf ("[bad validity value %u]", (unsigned int)val);
114 0 : }
115 :
116 :
117 : static void
118 0 : print_description (const char *text, int indent)
119 : {
120 0 : for (; *text; text++)
121 : {
122 0 : putchar (*text);
123 0 : if (*text == '\n')
124 0 : printf ("%*s", indent, "");
125 : }
126 0 : putchar ('\n');
127 0 : }
128 :
129 :
130 : static void
131 0 : print_result (gpgme_verify_result_t result)
132 : {
133 : gpgme_signature_t sig;
134 : gpgme_sig_notation_t nt;
135 : gpgme_user_id_t uid;
136 : gpgme_tofu_info_t ti;
137 0 : int count = 0;
138 :
139 0 : printf ("Original file name: %s\n", nonnull(result->file_name));
140 0 : for (sig = result->signatures; sig; sig = sig->next)
141 : {
142 0 : printf ("Signature %d\n", count++);
143 0 : printf (" status ....: %s\n", gpgme_strerror (sig->status));
144 0 : printf (" summary ...:"); print_summary (sig->summary); putchar ('\n');
145 0 : printf (" fingerprint: %s\n", nonnull (sig->fpr));
146 0 : printf (" created ...: %lu\n", sig->timestamp);
147 0 : printf (" expires ...: %lu\n", sig->exp_timestamp);
148 0 : printf (" validity ..: ");
149 0 : print_validity (sig->validity); putchar ('\n');
150 0 : printf (" val.reason : %s\n", gpgme_strerror (sig->status));
151 0 : printf (" pubkey algo: %d (%s)\n", sig->pubkey_algo,
152 : nonnull(gpgme_pubkey_algo_name (sig->pubkey_algo)));
153 0 : printf (" digest algo: %d (%s)\n", sig->hash_algo,
154 : nonnull(gpgme_hash_algo_name (sig->hash_algo)));
155 0 : printf (" pka address: %s\n", nonnull (sig->pka_address));
156 0 : printf (" pka trust .: %s\n",
157 0 : sig->pka_trust == 0? "n/a" :
158 0 : sig->pka_trust == 1? "bad" :
159 0 : sig->pka_trust == 2? "okay": "RFU");
160 0 : printf (" other flags:%s%s\n",
161 0 : sig->wrong_key_usage? " wrong-key-usage":"",
162 0 : sig->chain_model? " chain-model":""
163 : );
164 0 : for (nt = sig->notations; nt; nt = nt->next)
165 : {
166 0 : printf (" notation ..: '%s'\n", nt->name);
167 0 : if (strlen (nt->name) != nt->name_len)
168 0 : printf (" warning : name larger (%d)\n", nt->name_len);
169 0 : printf (" flags ...:%s%s (0x%02x)\n",
170 0 : nt->critical? " critical":"",
171 0 : nt->human_readable? " human":"",
172 : nt->flags);
173 0 : if (nt->value)
174 0 : printf (" value ...: '%s'\n", nt->value);
175 0 : if ((nt->value?strlen (nt->value):0) != nt->value_len)
176 0 : printf (" warning : value larger (%d)\n", nt->value_len);
177 : }
178 0 : if (sig->key)
179 : {
180 0 : printf (" primary fpr: %s\n", nonnull (sig->key->fpr));
181 0 : for (uid = sig->key->uids; uid; uid = uid->next)
182 : {
183 0 : printf (" tofu addr .: %s\n", nonnull (uid->address));
184 0 : ti = uid->tofu;
185 0 : if (!ti)
186 0 : continue;
187 0 : printf (" validity : %u (%s)\n", ti->validity,
188 0 : ti->validity == 0? "conflict" :
189 0 : ti->validity == 1? "no history" :
190 0 : ti->validity == 2? "little history" :
191 0 : ti->validity == 3? "enough history" :
192 0 : ti->validity == 4? "lot of history" : "?");
193 0 : printf (" policy ..: %u (%s)\n", ti->policy,
194 0 : ti->policy == GPGME_TOFU_POLICY_NONE? "none" :
195 0 : ti->policy == GPGME_TOFU_POLICY_AUTO? "auto" :
196 0 : ti->policy == GPGME_TOFU_POLICY_GOOD? "good" :
197 0 : ti->policy == GPGME_TOFU_POLICY_UNKNOWN? "unknown" :
198 0 : ti->policy == GPGME_TOFU_POLICY_BAD? "bad" :
199 0 : ti->policy == GPGME_TOFU_POLICY_ASK? "ask" : "?");
200 0 : printf (" signcount: %hu\n", ti->signcount);
201 0 : printf (" first..: %s\n", isotimestr (ti->signfirst));
202 0 : printf (" last ..: %s\n", isotimestr (ti->signlast));
203 0 : printf (" encrcount: %hu\n", ti->encrcount);
204 0 : printf (" first..: %s\n", isotimestr (ti->encrfirst));
205 0 : printf (" last ..: %s\n", isotimestr (ti->encrlast));
206 0 : printf (" desc ....: ");
207 0 : print_description (nonnull (ti->description), 15);
208 : }
209 : }
210 : }
211 0 : }
212 :
213 :
214 :
215 : static int
216 0 : show_usage (int ex)
217 : {
218 0 : fputs ("usage: " PGM " [options] [DETACHEDSIGFILE] FILE\n\n"
219 : "Options:\n"
220 : " --verbose run in verbose mode\n"
221 : " --status print status lines from the backend\n"
222 : " --openpgp use the OpenPGP protocol (default)\n"
223 : " --cms use the CMS protocol\n"
224 : " --sender MBOX use MBOX as sender address\n"
225 : , stderr);
226 0 : exit (ex);
227 : }
228 :
229 :
230 : int
231 0 : main (int argc, char **argv)
232 : {
233 0 : int last_argc = -1;
234 : gpgme_error_t err;
235 : gpgme_ctx_t ctx;
236 0 : gpgme_protocol_t protocol = GPGME_PROTOCOL_OpenPGP;
237 0 : FILE *fp_sig = NULL;
238 0 : gpgme_data_t sig = NULL;
239 0 : FILE *fp_msg = NULL;
240 0 : gpgme_data_t msg = NULL;
241 : gpgme_verify_result_t result;
242 0 : int print_status = 0;
243 0 : const char *sender = NULL;
244 :
245 0 : if (argc)
246 0 : { argc--; argv++; }
247 :
248 0 : while (argc && last_argc != argc )
249 : {
250 0 : last_argc = argc;
251 0 : if (!strcmp (*argv, "--"))
252 : {
253 0 : argc--; argv++;
254 0 : break;
255 : }
256 0 : else if (!strcmp (*argv, "--help"))
257 0 : show_usage (0);
258 0 : else if (!strcmp (*argv, "--verbose"))
259 : {
260 0 : verbose = 1;
261 0 : argc--; argv++;
262 : }
263 0 : else if (!strcmp (*argv, "--status"))
264 : {
265 0 : print_status = 1;
266 0 : argc--; argv++;
267 : }
268 0 : else if (!strcmp (*argv, "--openpgp"))
269 : {
270 0 : protocol = GPGME_PROTOCOL_OpenPGP;
271 0 : argc--; argv++;
272 : }
273 0 : else if (!strcmp (*argv, "--cms"))
274 : {
275 0 : protocol = GPGME_PROTOCOL_CMS;
276 0 : argc--; argv++;
277 : }
278 0 : else if (!strcmp (*argv, "--sender"))
279 : {
280 0 : argc--; argv++;
281 0 : if (!argc)
282 0 : show_usage (1);
283 0 : sender = *argv;
284 0 : argc--; argv++;
285 : }
286 0 : else if (!strncmp (*argv, "--", 2))
287 0 : show_usage (1);
288 :
289 : }
290 :
291 0 : if (argc < 1 || argc > 2)
292 0 : show_usage (1);
293 :
294 0 : fp_sig = fopen (argv[0], "rb");
295 0 : if (!fp_sig)
296 : {
297 0 : err = gpgme_error_from_syserror ();
298 0 : fprintf (stderr, PGM ": can't open `%s': %s\n",
299 : argv[0], gpgme_strerror (err));
300 0 : exit (1);
301 : }
302 0 : if (argc > 1)
303 : {
304 0 : fp_msg = fopen (argv[1], "rb");
305 0 : if (!fp_msg)
306 : {
307 0 : err = gpgme_error_from_syserror ();
308 0 : fprintf (stderr, PGM ": can't open `%s': %s\n",
309 0 : argv[1], gpgme_strerror (err));
310 0 : exit (1);
311 : }
312 : }
313 :
314 0 : init_gpgme (protocol);
315 :
316 0 : err = gpgme_new (&ctx);
317 0 : fail_if_err (err);
318 0 : gpgme_set_protocol (ctx, protocol);
319 0 : if (print_status)
320 : {
321 0 : gpgme_set_status_cb (ctx, status_cb, NULL);
322 0 : gpgme_set_ctx_flag (ctx, "full-status", "1");
323 : }
324 : /* gpgme_set_ctx_flag (ctx, "raw-description", "1"); */
325 :
326 0 : if (sender)
327 : {
328 0 : err = gpgme_set_sender (ctx, sender);
329 0 : fail_if_err (err);
330 : }
331 :
332 0 : err = gpgme_data_new_from_stream (&sig, fp_sig);
333 0 : if (err)
334 : {
335 0 : fprintf (stderr, PGM ": error allocating data object: %s\n",
336 : gpgme_strerror (err));
337 0 : exit (1);
338 : }
339 0 : if (fp_msg)
340 : {
341 0 : err = gpgme_data_new_from_stream (&msg, fp_msg);
342 0 : if (err)
343 : {
344 0 : fprintf (stderr, PGM ": error allocating data object: %s\n",
345 : gpgme_strerror (err));
346 0 : exit (1);
347 : }
348 : }
349 :
350 0 : err = gpgme_op_verify (ctx, sig, msg, NULL);
351 0 : result = gpgme_op_verify_result (ctx);
352 0 : if (result)
353 0 : print_result (result);
354 0 : if (err)
355 : {
356 0 : fprintf (stderr, PGM ": verify failed: %s\n", gpgme_strerror (err));
357 0 : exit (1);
358 : }
359 :
360 0 : gpgme_data_release (msg);
361 0 : gpgme_data_release (sig);
362 :
363 0 : gpgme_release (ctx);
364 0 : return 0;
365 : }
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