Line data Source code
1 : /* op-support.c - Supporting functions.
2 : Copyright (C) 2002, 2003, 2004, 2007 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 <http://www.gnu.org/licenses/>.
18 : */
19 :
20 : #if HAVE_CONFIG_H
21 : #include <config.h>
22 : #endif
23 : #include <stdlib.h>
24 : #include <errno.h>
25 : #include <string.h>
26 : #ifdef HAVE_LOCALE_H
27 : #include <locale.h>
28 : #endif
29 :
30 : #include "gpgme.h"
31 : #include "context.h"
32 : #include "ops.h"
33 : #include "util.h"
34 : #include "debug.h"
35 :
36 :
37 : gpgme_error_t
38 2090 : _gpgme_op_data_lookup (gpgme_ctx_t ctx, ctx_op_data_id_t type, void **hook,
39 : int size, void (*cleanup) (void *))
40 : {
41 : struct ctx_op_data *data;
42 :
43 2090 : if (!ctx)
44 0 : return gpg_error (GPG_ERR_INV_VALUE);
45 :
46 2090 : data = ctx->op_data;
47 4659 : while (data && data->type != type)
48 479 : data = data->next;
49 2090 : if (!data)
50 : {
51 178 : if (size < 0)
52 : {
53 0 : *hook = NULL;
54 0 : return 0;
55 : }
56 :
57 178 : data = calloc (1, sizeof (struct ctx_op_data) + size);
58 178 : if (!data)
59 0 : return gpg_error_from_syserror ();
60 178 : data->magic = CTX_OP_DATA_MAGIC;
61 178 : data->next = ctx->op_data;
62 178 : data->type = type;
63 178 : data->cleanup = cleanup;
64 178 : data->hook = (void *) (((char *) data) + sizeof (struct ctx_op_data));
65 178 : data->references = 1;
66 178 : ctx->op_data = data;
67 : }
68 2090 : *hook = data->hook;
69 2090 : return 0;
70 : }
71 :
72 :
73 : /* type is: 0: asynchronous operation (use global or user event loop).
74 : 1: synchronous operation (always use private event loop).
75 : 2: asynchronous private operation (use private or user
76 : event loop).
77 : 256: Modification flag to suppress the engine reset.
78 : */
79 : gpgme_error_t
80 139 : _gpgme_op_reset (gpgme_ctx_t ctx, int type)
81 : {
82 139 : gpgme_error_t err = 0;
83 : struct gpgme_io_cbs io_cbs;
84 139 : int no_reset = (type & 256);
85 139 : int reuse_engine = 0;
86 :
87 139 : type &= 255;
88 :
89 139 : _gpgme_release_result (ctx);
90 139 : LOCK (ctx->lock);
91 139 : ctx->canceled = 0;
92 139 : UNLOCK (ctx->lock);
93 :
94 139 : if (ctx->engine && no_reset)
95 2 : reuse_engine = 1;
96 137 : else if (ctx->engine)
97 : {
98 : /* Attempt to reset an existing engine. */
99 :
100 19 : err = _gpgme_engine_reset (ctx->engine);
101 19 : if (gpg_err_code (err) == GPG_ERR_NOT_IMPLEMENTED)
102 : {
103 15 : _gpgme_engine_release (ctx->engine);
104 15 : ctx->engine = NULL;
105 : }
106 : }
107 :
108 139 : if (!ctx->engine)
109 : {
110 : gpgme_engine_info_t info;
111 133 : info = ctx->engine_info;
112 274 : while (info && info->protocol != ctx->protocol)
113 8 : info = info->next;
114 :
115 133 : if (!info)
116 0 : return gpg_error (GPG_ERR_UNSUPPORTED_PROTOCOL);
117 :
118 : /* Create an engine object. */
119 133 : err = _gpgme_engine_new (info, &ctx->engine);
120 133 : if (err)
121 0 : return err;
122 : }
123 :
124 139 : if (!reuse_engine)
125 : {
126 137 : err = 0;
127 : #ifdef LC_CTYPE
128 137 : err = _gpgme_engine_set_locale (ctx->engine, LC_CTYPE, ctx->lc_ctype);
129 : #endif
130 : #ifdef LC_MESSAGES
131 137 : if (!err)
132 137 : err = _gpgme_engine_set_locale (ctx->engine,
133 137 : LC_MESSAGES, ctx->lc_messages);
134 : #endif
135 137 : if (gpg_err_code (err) == GPG_ERR_NOT_IMPLEMENTED)
136 0 : err = 0;
137 :
138 137 : if (!err)
139 : {
140 137 : err = _gpgme_engine_set_pinentry_mode (ctx->engine,
141 : ctx->pinentry_mode);
142 137 : if (gpg_err_code (err) == GPG_ERR_NOT_IMPLEMENTED)
143 12 : err = 0;
144 : }
145 :
146 137 : if (err)
147 : {
148 0 : _gpgme_engine_release (ctx->engine);
149 0 : ctx->engine = NULL;
150 0 : return err;
151 : }
152 : }
153 :
154 139 : if (ctx->sub_protocol != GPGME_PROTOCOL_DEFAULT)
155 : {
156 0 : err = _gpgme_engine_set_protocol (ctx->engine, ctx->sub_protocol);
157 0 : if (err)
158 0 : return err;
159 : }
160 :
161 139 : if (type == 1 || (type == 2 && !ctx->io_cbs.add))
162 : {
163 : /* Use private event loop. */
164 137 : io_cbs.add = _gpgme_add_io_cb;
165 137 : io_cbs.add_priv = ctx;
166 137 : io_cbs.remove = _gpgme_remove_io_cb;
167 137 : io_cbs.event = _gpgme_wait_private_event_cb;
168 137 : io_cbs.event_priv = ctx;
169 : }
170 2 : else if (! ctx->io_cbs.add)
171 : {
172 : /* Use global event loop. */
173 1 : io_cbs.add = _gpgme_add_io_cb;
174 1 : io_cbs.add_priv = ctx;
175 1 : io_cbs.remove = _gpgme_remove_io_cb;
176 1 : io_cbs.event = _gpgme_wait_global_event_cb;
177 1 : io_cbs.event_priv = ctx;
178 : }
179 : else
180 : {
181 : /* Use user event loop. */
182 1 : io_cbs.add = _gpgme_wait_user_add_io_cb;
183 1 : io_cbs.add_priv = ctx;
184 1 : io_cbs.remove = _gpgme_wait_user_remove_io_cb;
185 1 : io_cbs.event = _gpgme_wait_user_event_cb;
186 1 : io_cbs.event_priv = ctx;
187 : }
188 139 : _gpgme_engine_set_io_cbs (ctx->engine, &io_cbs);
189 139 : return err;
190 : }
191 :
192 :
193 : /* Parse the INV_RECP or INV-SNDR status line in ARGS and return the
194 : result in KEY. */
195 : gpgme_error_t
196 0 : _gpgme_parse_inv_recp (char *args, gpgme_invalid_key_t *key)
197 : {
198 : gpgme_invalid_key_t inv_key;
199 : char *tail;
200 : long int reason;
201 :
202 0 : inv_key = malloc (sizeof (*inv_key));
203 0 : if (!inv_key)
204 0 : return gpg_error_from_syserror ();
205 0 : inv_key->next = NULL;
206 0 : gpg_err_set_errno (0);
207 0 : reason = strtol (args, &tail, 0);
208 0 : if (errno || args == tail || (*tail && *tail != ' '))
209 : {
210 : /* The crypto backend does not behave. */
211 0 : free (inv_key);
212 0 : return trace_gpg_error (GPG_ERR_INV_ENGINE);
213 : }
214 :
215 0 : switch (reason)
216 : {
217 : default:
218 : case 0:
219 0 : inv_key->reason = gpg_error (GPG_ERR_GENERAL);
220 0 : break;
221 :
222 : case 1:
223 0 : inv_key->reason = gpg_error (GPG_ERR_NO_PUBKEY);
224 0 : break;
225 :
226 : case 2:
227 0 : inv_key->reason = gpg_error (GPG_ERR_AMBIGUOUS_NAME);
228 0 : break;
229 :
230 : case 3:
231 0 : inv_key->reason = gpg_error (GPG_ERR_WRONG_KEY_USAGE);
232 0 : break;
233 :
234 : case 4:
235 0 : inv_key->reason = gpg_error (GPG_ERR_CERT_REVOKED);
236 0 : break;
237 :
238 : case 5:
239 0 : inv_key->reason = gpg_error (GPG_ERR_CERT_EXPIRED);
240 0 : break;
241 :
242 : case 6:
243 0 : inv_key->reason = gpg_error (GPG_ERR_NO_CRL_KNOWN);
244 0 : break;
245 :
246 : case 7:
247 0 : inv_key->reason = gpg_error (GPG_ERR_CRL_TOO_OLD);
248 0 : break;
249 :
250 : case 8:
251 0 : inv_key->reason = gpg_error (GPG_ERR_NO_POLICY_MATCH);
252 0 : break;
253 :
254 : case 9:
255 0 : inv_key->reason = gpg_error (GPG_ERR_NO_SECKEY);
256 0 : break;
257 :
258 : case 10:
259 0 : inv_key->reason = gpg_error (GPG_ERR_PUBKEY_NOT_TRUSTED);
260 0 : break;
261 :
262 : case 11:
263 0 : inv_key->reason = gpg_error (GPG_ERR_MISSING_CERT);
264 0 : break;
265 :
266 : case 12:
267 0 : inv_key->reason = gpg_error (GPG_ERR_MISSING_ISSUER_CERT);
268 0 : break;
269 :
270 : case 13:
271 0 : inv_key->reason = gpg_error (252); /*GPG_ERR_KEY_DISABLED*/
272 0 : break;
273 :
274 : case 14:
275 0 : inv_key->reason = gpg_error (GPG_ERR_INV_USER_ID);
276 0 : break;
277 : }
278 :
279 0 : while (*tail && *tail == ' ')
280 0 : tail++;
281 0 : if (*tail)
282 : {
283 0 : inv_key->fpr = strdup (tail);
284 0 : if (!inv_key->fpr)
285 : {
286 0 : free (inv_key);
287 0 : return gpg_error_from_syserror ();
288 : }
289 : }
290 : else
291 0 : inv_key->fpr = NULL;
292 :
293 0 : *key = inv_key;
294 0 : return 0;
295 : }
296 :
297 :
298 : /* Parse the PLAINTEXT status line in ARGS and return the result in
299 : FILENAMEP. */
300 : gpgme_error_t
301 28 : _gpgme_parse_plaintext (char *args, char **filenamep)
302 : {
303 : char *tail;
304 :
305 56 : while (*args == ' ')
306 0 : args++;
307 28 : if (*args == '\0')
308 0 : return 0;
309 :
310 : /* First argument is file type. */
311 112 : while (*args != ' ' && *args != '\0')
312 56 : args++;
313 84 : while (*args == ' ')
314 28 : args++;
315 28 : if (*args == '\0')
316 0 : return 0;
317 :
318 : /* Second argument is the timestamp. */
319 315 : while (*args != ' ' && *args != '\0')
320 259 : args++;
321 84 : while (*args == ' ')
322 28 : args++;
323 28 : if (*args == '\0')
324 23 : return 0;
325 :
326 5 : tail = args;
327 40 : while (*tail != ' ' && *tail != '\0')
328 30 : tail++;
329 5 : *tail = '\0';
330 5 : if (filenamep && *args != '\0')
331 : {
332 5 : char *filename = strdup (args);
333 5 : if (!filename)
334 0 : return gpg_error_from_syserror ();
335 :
336 5 : *filenamep = filename;
337 : }
338 5 : return 0;
339 : }
340 :
341 :
342 : /* Parse a FAILURE status line and return the error code. ARGS is
343 : modified to contain the location part. */
344 : gpgme_error_t
345 0 : _gpgme_parse_failure (char *args)
346 : {
347 : char *where, *which;
348 :
349 0 : where = strchr (args, ' ');
350 0 : if (!where)
351 0 : return trace_gpg_error (GPG_ERR_INV_ENGINE);
352 :
353 0 : *where = '\0';
354 0 : which = where + 1;
355 :
356 0 : where = strchr (which, ' ');
357 0 : if (where)
358 0 : *where = '\0';
359 :
360 0 : where = args;
361 :
362 0 : return atoi (which);
363 : }
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