2 * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 1999-2016 Colin Leroy <colin@colino.net>
4 * and the Claws Mail team
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "claws-features.h"
28 #include <gnutls/gnutls.h>
29 #include <gnutls/x509.h>
30 #include <sys/types.h>
37 #include <glib/gi18n.h>
40 #include "prefs_common.h"
42 #include "ssl_certificate.h"
44 #include "alertpanel.h"
47 static gboolean sslcertwindow_ask_new_cert(SSLCertificate *cert);
48 static gboolean sslcertwindow_ask_expired_cert(SSLCertificate *cert);
49 static gboolean sslcertwindow_ask_changed_cert(SSLCertificate *old_cert, SSLCertificate *new_cert);
51 static GtkWidget *cert_presenter(SSLCertificate *cert)
53 GtkWidget *vbox = NULL;
54 GtkWidget *hbox = NULL;
55 GtkWidget *frame_owner = NULL;
56 GtkWidget *frame_signer = NULL;
57 GtkWidget *frame_status = NULL;
58 GtkTable *owner_table = NULL;
59 GtkTable *signer_table = NULL;
60 GtkTable *status_table = NULL;
61 GtkWidget *label = NULL;
63 char *issuer_commonname, *issuer_location, *issuer_organization;
64 char *subject_commonname, *subject_location, *subject_organization;
65 char *sig_status, *exp_date;
66 char *md5_fingerprint, *sha1_fingerprint, *fingerprint;
69 unsigned char md[128];
75 issuer_commonname = g_malloc(BUFFSIZE);
76 issuer_location = g_malloc(BUFFSIZE);
77 issuer_organization = g_malloc(BUFFSIZE);
78 subject_commonname = g_malloc(BUFFSIZE);
79 subject_location = g_malloc(BUFFSIZE);
80 subject_organization = g_malloc(BUFFSIZE);
83 if (gnutls_x509_crt_get_issuer_dn_by_oid(cert->x509_cert,
84 GNUTLS_OID_X520_COMMON_NAME, 0, 0, issuer_commonname, &n))
85 strncpy(issuer_commonname, _("<not in certificate>"), BUFFSIZE);
88 if (gnutls_x509_crt_get_issuer_dn_by_oid(cert->x509_cert,
89 GNUTLS_OID_X520_LOCALITY_NAME, 0, 0, issuer_location, &n)) {
90 if (gnutls_x509_crt_get_issuer_dn_by_oid(cert->x509_cert,
91 GNUTLS_OID_X520_COUNTRY_NAME, 0, 0, issuer_location, &n)) {
92 strncpy(issuer_location, _("<not in certificate>"), BUFFSIZE);
95 tmp = g_malloc(BUFFSIZE);
96 if (gnutls_x509_crt_get_issuer_dn_by_oid(cert->x509_cert,
97 GNUTLS_OID_X520_COUNTRY_NAME, 0, 0, tmp, &n) == 0) {
98 strncat(issuer_location, ", ", BUFFSIZE-strlen(issuer_location)-1);
99 strncat(issuer_location, tmp, BUFFSIZE-strlen(issuer_location)-1);
105 if (gnutls_x509_crt_get_issuer_dn_by_oid(cert->x509_cert,
106 GNUTLS_OID_X520_ORGANIZATION_NAME, 0, 0, issuer_organization, &n))
107 strncpy(issuer_organization, _("<not in certificate>"), BUFFSIZE);
110 if (gnutls_x509_crt_get_dn_by_oid(cert->x509_cert,
111 GNUTLS_OID_X520_COMMON_NAME, 0, 0, subject_commonname, &n))
112 strncpy(subject_commonname, _("<not in certificate>"), BUFFSIZE);
115 if (gnutls_x509_crt_get_dn_by_oid(cert->x509_cert,
116 GNUTLS_OID_X520_LOCALITY_NAME, 0, 0, subject_location, &n)) {
117 if (gnutls_x509_crt_get_dn_by_oid(cert->x509_cert,
118 GNUTLS_OID_X520_COUNTRY_NAME, 0, 0, subject_location, &n)) {
119 strncpy(subject_location, _("<not in certificate>"), BUFFSIZE);
122 tmp = g_malloc(BUFFSIZE);
123 if (gnutls_x509_crt_get_dn_by_oid(cert->x509_cert,
124 GNUTLS_OID_X520_COUNTRY_NAME, 0, 0, tmp, &n) == 0) {
125 strncat(subject_location, ", ", BUFFSIZE-strlen(subject_location)-1);
126 strncat(subject_location, tmp, BUFFSIZE-strlen(subject_location)-1);
132 if (gnutls_x509_crt_get_dn_by_oid(cert->x509_cert,
133 GNUTLS_OID_X520_ORGANIZATION_NAME, 0, 0, subject_organization, &n))
134 strncpy(subject_organization, _("<not in certificate>"), BUFFSIZE);
136 exp_time_t = gnutls_x509_crt_get_expiration_time(cert->x509_cert);
138 memset(buf, 0, sizeof(buf));
139 if (exp_time_t > 0) {
140 fast_strftime(buf, sizeof(buf)-1, prefs_common.date_format, localtime_r(&exp_time_t, <));
141 exp_date = (*buf) ? g_strdup(buf):g_strdup("?");
143 exp_date = g_strdup("");
147 gnutls_x509_crt_get_fingerprint(cert->x509_cert, GNUTLS_DIG_MD5, md, &n);
148 md5_fingerprint = readable_fingerprint(md, (int)n);
150 gnutls_x509_crt_get_fingerprint(cert->x509_cert, GNUTLS_DIG_SHA1, md, &n);
151 sha1_fingerprint = readable_fingerprint(md, (int)n);
154 sig_status = ssl_certificate_check_signer(cert, cert->status);
156 if (sig_status==NULL)
157 sig_status = g_strdup(_("Correct"));
159 vbox = gtk_vbox_new(FALSE, 5);
160 hbox = gtk_hbox_new(FALSE, 5);
162 frame_owner = gtk_frame_new(_("Owner"));
163 frame_signer = gtk_frame_new(_("Signer"));
164 frame_status = gtk_frame_new(_("Status"));
166 owner_table = GTK_TABLE(gtk_table_new(3, 2, FALSE));
167 signer_table = GTK_TABLE(gtk_table_new(3, 2, FALSE));
168 status_table = GTK_TABLE(gtk_table_new(3, 2, FALSE));
170 label = gtk_label_new(_("Name: "));
171 gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
172 gtk_table_attach(owner_table, label, 0, 1, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
173 label = gtk_label_new(subject_commonname);
174 gtk_label_set_selectable(GTK_LABEL(label), TRUE);
175 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
176 gtk_table_attach(owner_table, label, 1, 2, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
178 label = gtk_label_new(_("Organization: "));
179 gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
180 gtk_table_attach(owner_table, label, 0, 1, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
181 label = gtk_label_new(subject_organization);
182 gtk_label_set_selectable(GTK_LABEL(label), TRUE);
183 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
184 gtk_table_attach(owner_table, label, 1, 2, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
186 label = gtk_label_new(_("Location: "));
187 gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
188 gtk_table_attach(owner_table, label, 0, 1, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
189 label = gtk_label_new(subject_location);
190 gtk_label_set_selectable(GTK_LABEL(label), TRUE);
191 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
192 gtk_table_attach(owner_table, label, 1, 2, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
194 label = gtk_label_new(_("Name: "));
195 gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
196 gtk_table_attach(signer_table, label, 0, 1, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
197 label = gtk_label_new(issuer_commonname);
198 gtk_label_set_selectable(GTK_LABEL(label), TRUE);
199 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
200 gtk_table_attach(signer_table, label, 1, 2, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
202 label = gtk_label_new(_("Organization: "));
203 gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
204 gtk_table_attach(signer_table, label, 0, 1, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
205 label = gtk_label_new(issuer_organization);
206 gtk_label_set_selectable(GTK_LABEL(label), TRUE);
207 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
208 gtk_table_attach(signer_table, label, 1, 2, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
210 label = gtk_label_new(_("Location: "));
211 gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
212 gtk_table_attach(signer_table, label, 0, 1, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
213 label = gtk_label_new(issuer_location);
214 gtk_label_set_selectable(GTK_LABEL(label), TRUE);
215 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
216 gtk_table_attach(signer_table, label, 1, 2, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
218 label = gtk_label_new(_("Fingerprint: \n"));
219 gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
220 gtk_table_attach(status_table, label, 0, 1, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
221 fingerprint = g_strdup_printf("MD5: %s\nSHA1: %s",
222 md5_fingerprint, sha1_fingerprint);
223 label = gtk_label_new(fingerprint);
225 gtk_label_set_selectable(GTK_LABEL(label), TRUE);
226 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
227 gtk_table_attach(status_table, label, 1, 2, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
228 label = gtk_label_new(_("Signature status: "));
229 gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
230 gtk_table_attach(status_table, label, 0, 1, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
231 label = gtk_label_new(sig_status);
232 gtk_label_set_selectable(GTK_LABEL(label), TRUE);
233 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
234 gtk_table_attach(status_table, label, 1, 2, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
235 label = gtk_label_new(_("Expires on: "));
236 gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
237 gtk_table_attach(status_table, label, 0, 1, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
238 label = gtk_label_new(exp_date);
239 gtk_label_set_selectable(GTK_LABEL(label), TRUE);
240 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
241 gtk_table_attach(status_table, label, 1, 2, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
243 gtk_container_add(GTK_CONTAINER(frame_owner), GTK_WIDGET(owner_table));
244 gtk_container_add(GTK_CONTAINER(frame_signer), GTK_WIDGET(signer_table));
245 gtk_container_add(GTK_CONTAINER(frame_status), GTK_WIDGET(status_table));
247 gtk_box_pack_end(GTK_BOX(hbox), frame_signer, TRUE, TRUE, 0);
248 gtk_box_pack_end(GTK_BOX(hbox), frame_owner, TRUE, TRUE, 0);
249 gtk_box_pack_end(GTK_BOX(vbox), frame_status, TRUE, TRUE, 0);
250 gtk_box_pack_end(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);
252 gtk_widget_show_all(vbox);
254 g_free(issuer_commonname);
255 g_free(issuer_location);
256 g_free(issuer_organization);
257 g_free(subject_commonname);
258 g_free(subject_location);
259 g_free(subject_organization);
260 g_free(md5_fingerprint);
261 g_free(sha1_fingerprint);
267 static gboolean sslcert_ask_hook(gpointer source, gpointer data)
269 SSLCertHookData *hookdata = (SSLCertHookData *)source;
271 if (hookdata == NULL) {
275 if (prefs_common.skip_ssl_cert_check) {
276 hookdata->accept = TRUE;
280 if (hookdata->old_cert == NULL) {
281 if (hookdata->expired)
282 hookdata->accept = sslcertwindow_ask_expired_cert(hookdata->cert);
284 hookdata->accept = sslcertwindow_ask_new_cert(hookdata->cert);
286 hookdata->accept = sslcertwindow_ask_changed_cert(hookdata->old_cert, hookdata->cert);
292 void sslcertwindow_register_hook(void)
294 hooks_register_hook(SSLCERT_ASK_HOOKLIST, sslcert_ask_hook, NULL);
297 void sslcertwindow_show_cert(SSLCertificate *cert)
299 GtkWidget *cert_widget = cert_presenter(cert);
302 buf = g_strdup_printf(_("SSL/TLS certificate for %s"), cert->host);
303 alertpanel_full(buf, NULL, GTK_STOCK_CLOSE, NULL, NULL,
304 ALERTFOCUS_FIRST, FALSE, cert_widget, ALERT_NOTICE);
308 static gchar *sslcertwindow_get_invalid_str(SSLCertificate *cert)
310 gchar *subject_cn = NULL;
313 if (ssl_certificate_check_subject_cn(cert))
316 subject_cn = ssl_certificate_get_subject_cn(cert);
318 str = g_strdup_printf(_("Certificate is for %s, but connection is to %s.\n"
319 "You may be connecting to a rogue server.\n\n"),
320 subject_cn, cert->host);
326 static gboolean sslcertwindow_ask_new_cert(SSLCertificate *cert)
328 gchar *buf, *sig_status;
333 GtkWidget *cert_widget;
334 gchar *invalid_str = sslcertwindow_get_invalid_str(cert);
337 vbox = gtk_vbox_new(FALSE, 5);
338 buf = g_strdup_printf(_("Certificate for %s is unknown.\n%sDo you want to accept it?"), cert->host, invalid_str);
341 label = gtk_label_new(buf);
342 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
343 gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 0);
346 sig_status = ssl_certificate_check_signer(cert, cert->status);
347 if (sig_status==NULL)
348 sig_status = g_strdup(_("Correct"));
350 buf = g_strdup_printf(_("Signature status: %s"), sig_status);
351 label = gtk_label_new(buf);
352 gtk_label_set_selectable(GTK_LABEL(label), TRUE);
353 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
354 gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 0);
358 button = gtk_expander_new_with_mnemonic(_("_View certificate"));
359 gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, FALSE, 0);
360 cert_widget = cert_presenter(cert);
361 gtk_container_add(GTK_CONTAINER(button), cert_widget);
363 if (!ssl_certificate_check_subject_cn(cert))
364 title = _("SSL/TLS certificate is invalid");
366 title = _("SSL/TLS certificate is unknown");
368 val = alertpanel_full(title, NULL,
369 _("_Cancel connection"), _("_Accept and save"), NULL,
370 ALERTFOCUS_FIRST, FALSE, vbox, ALERT_QUESTION);
372 return (val == G_ALERTALTERNATE);
375 static gboolean sslcertwindow_ask_expired_cert(SSLCertificate *cert)
377 gchar *buf, *sig_status;
382 GtkWidget *cert_widget;
383 gchar *invalid_str = sslcertwindow_get_invalid_str(cert);
386 vbox = gtk_vbox_new(FALSE, 5);
387 buf = g_strdup_printf(_("Certificate for %s is expired.\n%sDo you want to continue?"), cert->host, invalid_str);
390 label = gtk_label_new(buf);
391 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
392 gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 0);
395 sig_status = ssl_certificate_check_signer(cert, cert->status);
397 if (sig_status==NULL)
398 sig_status = g_strdup(_("Correct"));
400 buf = g_strdup_printf(_("Signature status: %s"), sig_status);
401 label = gtk_label_new(buf);
402 gtk_label_set_selectable(GTK_LABEL(label), TRUE);
403 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
404 gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 0);
408 button = gtk_expander_new_with_mnemonic(_("_View certificate"));
409 gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, FALSE, 0);
410 cert_widget = cert_presenter(cert);
411 gtk_container_add(GTK_CONTAINER(button), cert_widget);
413 if (!ssl_certificate_check_subject_cn(cert))
414 title = _("SSL/TLS certificate is invalid and expired");
416 title = _("SSL/TLS certificate is expired");
418 val = alertpanel_full(title, NULL,
419 _("_Cancel connection"), _("_Accept"), NULL,
420 ALERTFOCUS_FIRST, FALSE, vbox, ALERT_QUESTION);
422 return (val == G_ALERTALTERNATE);
425 static gboolean sslcertwindow_ask_changed_cert(SSLCertificate *old_cert, SSLCertificate *new_cert)
427 GtkWidget *old_cert_widget = cert_presenter(old_cert);
428 GtkWidget *new_cert_widget = cert_presenter(new_cert);
430 gchar *buf, *sig_status;
435 gchar *invalid_str = sslcertwindow_get_invalid_str(new_cert);
438 vbox = gtk_vbox_new(FALSE, 5);
439 label = gtk_label_new(_("New certificate:"));
440 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
441 gtk_box_pack_end(GTK_BOX(vbox), new_cert_widget, TRUE, TRUE, 0);
442 gtk_box_pack_end(GTK_BOX(vbox), label, TRUE, TRUE, 0);
443 gtk_box_pack_end(GTK_BOX(vbox), gtk_hseparator_new(), TRUE, TRUE, 0);
444 label = gtk_label_new(_("Known certificate:"));
445 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
446 gtk_box_pack_end(GTK_BOX(vbox), old_cert_widget, TRUE, TRUE, 0);
447 gtk_box_pack_end(GTK_BOX(vbox), label, TRUE, TRUE, 0);
448 gtk_widget_show_all(vbox);
450 vbox2 = gtk_vbox_new(FALSE, 5);
451 buf = g_strdup_printf(_("Certificate for %s has changed.\n%sDo you want to accept it?"), new_cert->host, invalid_str);
454 label = gtk_label_new(buf);
455 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
456 gtk_box_pack_start(GTK_BOX(vbox2), label, TRUE, TRUE, 0);
459 sig_status = ssl_certificate_check_signer(new_cert, new_cert->status);
461 if (sig_status==NULL)
462 sig_status = g_strdup(_("Correct"));
464 buf = g_strdup_printf(_("Signature status: %s"), sig_status);
465 label = gtk_label_new(buf);
466 gtk_label_set_selectable(GTK_LABEL(label), TRUE);
467 gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
468 gtk_box_pack_start(GTK_BOX(vbox2), label, TRUE, TRUE, 0);
472 button = gtk_expander_new_with_mnemonic(_("_View certificates"));
473 gtk_box_pack_start(GTK_BOX(vbox2), button, FALSE, FALSE, 0);
474 gtk_container_add(GTK_CONTAINER(button), vbox);
476 if (!ssl_certificate_check_subject_cn(new_cert))
477 title = _("SSL/TLS certificate changed and is invalid");
479 title = _("SSL/TLS certificate changed");
480 val = alertpanel_full(title, NULL,
481 _("_Cancel connection"), _("_Accept and save"), NULL,
482 ALERTFOCUS_FIRST, FALSE, vbox2, ALERT_WARNING);
484 return (val == G_ALERTALTERNATE);