2 * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 1999-2003 Hiroyuki Yamamoto & the Sylpheed-Claws team
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 static GSList *systems = NULL;
29 * Register a new Privacy System
31 * \param system The Privacy System that should be registered
33 void privacy_register_system(PrivacySystem *system)
35 systems = g_slist_append(systems, system);
39 * Unregister a new Privacy System. The system must not be in
40 * use anymore when it is unregistered.
42 * \param system The Privacy System that should be unregistered
44 void privacy_unregister_system(PrivacySystem *system)
46 systems = g_slist_remove(systems, system);
50 * Free a PrivacyData of a PrivacySystem
52 * \param privacydata The data to free
54 void privacy_free_privacydata(PrivacyData *privacydata)
56 g_return_if_fail(privacydata != NULL);
58 privacydata->system->free_privacydata(privacydata);
62 * Check if a MimeInfo is signed with one of the available
63 * privacy system. If a privacydata is set in the MimeInfo
64 * it will directory return the return value by the system
65 * set in the privacy data or check all available privacy
68 * \return True if the MimeInfo has a signature
70 gboolean privacy_mimeinfo_is_signed(MimeInfo *mimeinfo)
73 g_return_val_if_fail(mimeinfo != NULL, FALSE);
75 if (mimeinfo->privacy != NULL) {
76 PrivacySystem *system = mimeinfo->privacy->system;
78 if (system->is_signed != NULL)
79 return system->is_signed(mimeinfo);
84 for(cur = systems; cur != NULL; cur = g_slist_next(cur)) {
85 PrivacySystem *system = (PrivacySystem *) cur->data;
87 if(system->is_signed != NULL && system->is_signed(mimeinfo))
95 * Check the signature of a MimeInfo. privacy_mimeinfo_is_signed
96 * should be called before otherwise it is done by this function.
97 * If the MimeInfo is not signed an error code will be returned.
99 * \return Error code indicating the result of the check,
100 * < 0 if an error occured
102 gint privacy_mimeinfo_check_signature(MimeInfo *mimeinfo)
104 PrivacySystem *system;
106 g_return_val_if_fail(mimeinfo != NULL, -1);
108 if (mimeinfo->privacy == NULL)
109 privacy_mimeinfo_is_signed(mimeinfo);
111 if (mimeinfo->privacy == NULL)
114 system = mimeinfo->privacy->system;
115 if (system->check_signature == NULL)
118 return system->check_signature(mimeinfo);
121 SignatureStatus privacy_mimeinfo_get_sig_status(MimeInfo *mimeinfo)
123 PrivacySystem *system;
125 g_return_val_if_fail(mimeinfo != NULL, -1);
127 if (mimeinfo->privacy == NULL)
128 privacy_mimeinfo_is_signed(mimeinfo);
130 if (mimeinfo->privacy == NULL)
131 return SIGNATURE_UNCHECKED;
133 system = mimeinfo->privacy->system;
134 if (system->get_sig_status == NULL)
135 return SIGNATURE_UNCHECKED;
137 return system->get_sig_status(mimeinfo);
140 gchar *privacy_mimeinfo_sig_info_short(MimeInfo *mimeinfo)
142 PrivacySystem *system;
144 g_return_val_if_fail(mimeinfo != NULL, NULL);
146 if (mimeinfo->privacy == NULL)
147 privacy_mimeinfo_is_signed(mimeinfo);
149 if (mimeinfo->privacy == NULL)
150 return g_strdup(_("No signature found"));
152 system = mimeinfo->privacy->system;
153 if (system->get_sig_info_short == NULL)
154 return g_strdup(_("No information available"));
156 return system->get_sig_info_short(mimeinfo);
159 gchar *privacy_mimeinfo_sig_info_full(MimeInfo *mimeinfo)
161 PrivacySystem *system;
163 g_return_val_if_fail(mimeinfo != NULL, NULL);
165 if (mimeinfo->privacy == NULL)
166 privacy_mimeinfo_is_signed(mimeinfo);
168 if (mimeinfo->privacy == NULL)
169 return g_strdup(_("No signature found"));
171 system = mimeinfo->privacy->system;
172 if (system->get_sig_info_full == NULL)
173 return g_strdup(_("No information available"));
175 return system->get_sig_info_full(mimeinfo);
178 gboolean privacy_mimeinfo_is_encrypted(MimeInfo *mimeinfo)
181 g_return_val_if_fail(mimeinfo != NULL, FALSE);
183 for(cur = systems; cur != NULL; cur = g_slist_next(cur)) {
184 PrivacySystem *system = (PrivacySystem *) cur->data;
186 if(system->is_encrypted != NULL && system->is_encrypted(mimeinfo))
193 static gint decrypt(MimeInfo *mimeinfo, PrivacySystem *system)
195 MimeInfo *decryptedinfo, *parentinfo;
198 g_return_val_if_fail(system->decrypt != NULL, -1);
200 decryptedinfo = system->decrypt(mimeinfo);
201 if (decryptedinfo == NULL)
204 parentinfo = procmime_mimeinfo_parent(mimeinfo);
205 childnumber = g_node_child_index(parentinfo->node, mimeinfo);
207 procmime_mimeinfo_free_all(mimeinfo);
209 g_node_insert(parentinfo->node, childnumber, decryptedinfo->node);
214 gint privacy_mimeinfo_decrypt(MimeInfo *mimeinfo)
217 g_return_val_if_fail(mimeinfo != NULL, FALSE);
219 for(cur = systems; cur != NULL; cur = g_slist_next(cur)) {
220 PrivacySystem *system = (PrivacySystem *) cur->data;
222 if(system->is_encrypted != NULL && system->is_encrypted(mimeinfo))
223 return decrypt(mimeinfo, system);
229 GSList *privacy_get_system_ids()
234 for(cur = systems; cur != NULL; cur = g_slist_next(cur)) {
235 PrivacySystem *system = (PrivacySystem *) cur->data;
237 ret = g_slist_append(ret, g_strdup(system->id));
243 static PrivacySystem *privacy_get_system(const gchar *id)
247 g_return_val_if_fail(id != NULL, NULL);
249 for(cur = systems; cur != NULL; cur = g_slist_next(cur)) {
250 PrivacySystem *system = (PrivacySystem *) cur->data;
252 if(strcmp(id, system->id) == 0)
259 const gchar *privacy_system_get_name(const gchar *id)
261 PrivacySystem *system;
263 g_return_val_if_fail(id != NULL, NULL);
265 system = privacy_get_system(id);
272 gboolean privacy_system_can_sign(const gchar *id)
274 PrivacySystem *system;
276 g_return_val_if_fail(id != NULL, FALSE);
278 system = privacy_get_system(id);
282 return system->can_sign;
285 gboolean privacy_system_can_encrypt(const gchar *id)
287 PrivacySystem *system;
289 g_return_val_if_fail(id != NULL, FALSE);
291 system = privacy_get_system(id);
295 return system->can_encrypt;
298 gboolean privacy_sign(const gchar *id, MimeInfo *target)
300 PrivacySystem *system;
302 g_return_val_if_fail(id != NULL, FALSE);
303 g_return_val_if_fail(target != NULL, FALSE);
305 system = privacy_get_system(id);
308 if (!system->can_sign)
310 if (system->sign == NULL)
313 return system->sign(target);
316 gchar *privacy_get_encrypt_data(const gchar *id, GSList *recp_names)
318 PrivacySystem *system;
320 g_return_val_if_fail(id != NULL, NULL);
321 g_return_val_if_fail(recp_names != NULL, NULL);
323 system = privacy_get_system(id);
326 if (!system->can_encrypt)
328 if (system->get_encrypt_data == NULL)
331 return system->get_encrypt_data(recp_names);
334 gboolean privacy_encrypt(const gchar *id, MimeInfo *mimeinfo, const gchar *encdata)
336 PrivacySystem *system;
338 g_return_val_if_fail(id != NULL, FALSE);
339 g_return_val_if_fail(mimeinfo != NULL, FALSE);
340 g_return_val_if_fail(encdata != NULL, FALSE);
342 system = privacy_get_system(id);
345 if (!system->can_encrypt)
347 if (system->encrypt == NULL)
350 return system->encrypt(mimeinfo, encdata);