src/gtk/sslcertwindow.c

   1 /*
   2  * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2012 Colin Leroy <colin@colino.net>
   4  * and the Claws Mail team
   5  *
   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.
  10  *
  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.
  15  *
  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/>.
  18  *
  19  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 #  include "config.h"
  23 #include "claws-features.h"
  24 #endif
  25
  26 #ifdef USE_GNUTLS
  27
  28 #include <gnutls/gnutls.h>
  29 #include <gnutls/x509.h>
  30 #include <sys/types.h>
  31 #include <sys/stat.h>
  32 #include <stdio.h>
  33 #include <unistd.h>
  34 #include <string.h>
  35
  36 #include <glib.h>
  37 #include <glib/gi18n.h>
  38 #include <gtk/gtk.h>
  39
  40 #include "prefs_common.h"
  41 #include "defs.h"
  42 #include "ssl_certificate.h"
  43 #include "utils.h"
  44 #include "alertpanel.h"
  45 #include "hooks.h"
  46
  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);
  50
  51 static GtkWidget *cert_presenter(SSLCertificate *cert)
  52 {
  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;
  62
  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;
  67         size_t n;
  68         char buf[100];
  69         unsigned char md[128];
  70         char *tmp;
  71         time_t exp_time_t;
  72         struct tm lt;
  73
  74         /* issuer */
  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);
  81
  82         n = 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);
  86         n = BUFFSIZE;
  87
  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);
  93                 }
  94         } else {
  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);
 100                 }
 101                 g_free(tmp);
 102         }
 103
 104         n = BUFFSIZE;
 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);
 108
 109         n = 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);
 113         n = BUFFSIZE;
 114
 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);
 120                 }
 121         } else {
 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);
 127                 }
 128                 g_free(tmp);
 129         }
 130
 131         n = BUFFSIZE;
 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);
 135
 136         exp_time_t = gnutls_x509_crt_get_expiration_time(cert->x509_cert);
 137
 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, &lt));
 141                 exp_date = (*buf) ? g_strdup(buf):g_strdup("?");
 142         } else
 143                 exp_date = g_strdup("");
 144
 145         /* fingerprint */
 146         n = 128;
 147         gnutls_x509_crt_get_fingerprint(cert->x509_cert, GNUTLS_DIG_MD5, md, &n);
 148         md5_fingerprint = readable_fingerprint(md, (int)n);
 149         n = 128;
 150         gnutls_x509_crt_get_fingerprint(cert->x509_cert, GNUTLS_DIG_SHA1, md, &n);
 151         sha1_fingerprint = readable_fingerprint(md, (int)n);
 152
 153         /* signature */
 154         sig_status = ssl_certificate_check_signer(cert->x509_cert, cert->status);
 155
 156         if (sig_status==NULL)
 157                 sig_status = g_strdup(_("Correct"));
 158
 159         vbox = gtk_vbox_new(FALSE, 5);
 160         hbox = gtk_hbox_new(FALSE, 5);
 161
 162         frame_owner  = gtk_frame_new(_("Owner"));
 163         frame_signer = gtk_frame_new(_("Signer"));
 164         frame_status = gtk_frame_new(_("Status"));
 165
 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));
 169
 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);
 177
 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);
 185
 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);
 193
 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);
 201
 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);
 209
 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);
 217
 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);
 224         g_free(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);
 242
 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));
 246
 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);
 251
 252         gtk_widget_show_all(vbox);
 253
 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);
 262         g_free(sig_status);
 263         g_free(exp_date);
 264         return vbox;
 265 }
 266
 267 static gboolean sslcert_ask_hook(gpointer source, gpointer data)
 268 {
 269         SSLCertHookData *hookdata = (SSLCertHookData *)source;
 270
 271         if (hookdata == NULL) {
 272                 return FALSE;
 273         }
 274
 275         if (prefs_common.skip_ssl_cert_check) {
 276                 hookdata->accept = TRUE;
 277                 return TRUE;
 278         }
 279
 280         if (hookdata->old_cert == NULL) {
 281                 if (hookdata->expired)
 282                         hookdata->accept = sslcertwindow_ask_expired_cert(hookdata->cert);
 283                 else
 284                         hookdata->accept = sslcertwindow_ask_new_cert(hookdata->cert);
 285         } else {
 286                 hookdata->accept = sslcertwindow_ask_changed_cert(hookdata->old_cert, hookdata->cert);
 287         }
 288
 289         return TRUE;
 290 }
 291
 292 void sslcertwindow_register_hook(void)
 293 {
 294         hooks_register_hook(SSLCERT_ASK_HOOKLIST, sslcert_ask_hook, NULL);
 295 }
 296
 297 void sslcertwindow_show_cert(SSLCertificate *cert)
 298 {
 299         GtkWidget *cert_widget = cert_presenter(cert);
 300         gchar *buf;
 301
 302         buf = g_strdup_printf(_("SSL certificate for %s"), cert->host);
 303         alertpanel_full(buf, NULL, GTK_STOCK_CLOSE, NULL, NULL,
 304                         FALSE, cert_widget, ALERT_NOTICE, G_ALERTDEFAULT);
 305         g_free(buf);
 306 }
 307
 308 static gchar *sslcertwindow_get_invalid_str(SSLCertificate *cert)
 309 {
 310         gchar *subject_cn = NULL;
 311         gchar *str = NULL;
 312
 313         if (ssl_certificate_check_subject_cn(cert))
 314                 return g_strdup("");
 315
 316         subject_cn = ssl_certificate_get_subject_cn(cert);
 317
 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);
 321         g_free(subject_cn);
 322
 323         return str;
 324 }
 325
 326 static gboolean sslcertwindow_ask_new_cert(SSLCertificate *cert)
 327 {
 328         gchar *buf, *sig_status;
 329         AlertValue val;
 330         GtkWidget *vbox;
 331         GtkWidget *label;
 332         GtkWidget *button;
 333         GtkWidget *cert_widget;
 334         gchar *invalid_str = sslcertwindow_get_invalid_str(cert);
 335         const gchar *title;
 336
 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);
 339         g_free(invalid_str);
 340
 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);
 344         g_free(buf);
 345
 346         sig_status = ssl_certificate_check_signer(cert->x509_cert, cert->status);
 347         if (sig_status==NULL)
 348                 sig_status = g_strdup(_("Correct"));
 349
 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);
 355         g_free(buf);
 356         g_free(sig_status);
 357
 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);
 362
 363         if (!ssl_certificate_check_subject_cn(cert))
 364                 title = _("SSL certificate is invalid");
 365         else
 366                 title = _("SSL certificate is unknown");
 367
 368         val = alertpanel_full(title, NULL,
 369                               _("_Cancel connection"), _("_Accept and save"), NULL,
 370                               FALSE, vbox, ALERT_QUESTION, G_ALERTDEFAULT);
 371
 372         return (val == G_ALERTALTERNATE);
 373 }
 374
 375 static gboolean sslcertwindow_ask_expired_cert(SSLCertificate *cert)
 376 {
 377         gchar *buf, *sig_status;
 378         AlertValue val;
 379         GtkWidget *vbox;
 380         GtkWidget *label;
 381         GtkWidget *button;
 382         GtkWidget *cert_widget;
 383         gchar *invalid_str = sslcertwindow_get_invalid_str(cert);
 384         const gchar *title;
 385
 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);
 388         g_free(invalid_str);
 389
 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);
 393         g_free(buf);
 394
 395         sig_status = ssl_certificate_check_signer(cert->x509_cert, cert->status);
 396
 397         if (sig_status==NULL)
 398                 sig_status = g_strdup(_("Correct"));
 399
 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);
 405         g_free(buf);
 406         g_free(sig_status);
 407
 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);
 412
 413         if (!ssl_certificate_check_subject_cn(cert))
 414                 title = _("SSL certificate is invalid and expired");
 415         else
 416                 title = _("SSL certificate is expired");
 417
 418         val = alertpanel_full(title, NULL,
 419                               _("_Cancel connection"), _("_Accept"), NULL,
 420                               FALSE, vbox, ALERT_QUESTION, G_ALERTDEFAULT);
 421
 422         return (val == G_ALERTALTERNATE);
 423 }
 424
 425 static gboolean sslcertwindow_ask_changed_cert(SSLCertificate *old_cert, SSLCertificate *new_cert)
 426 {
 427         GtkWidget *old_cert_widget = cert_presenter(old_cert);
 428         GtkWidget *new_cert_widget = cert_presenter(new_cert);
 429         GtkWidget *vbox;
 430         gchar *buf, *sig_status;
 431         GtkWidget *vbox2;
 432         GtkWidget *label;
 433         GtkWidget *button;
 434         AlertValue val;
 435         gchar *invalid_str = sslcertwindow_get_invalid_str(new_cert);
 436         const gchar *title;
 437
 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);
 449
 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);
 452         g_free(invalid_str);
 453
 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);
 457         g_free(buf);
 458
 459         sig_status = ssl_certificate_check_signer(new_cert->x509_cert, new_cert->status);
 460
 461         if (sig_status==NULL)
 462                 sig_status = g_strdup(_("Correct"));
 463
 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);
 469         g_free(buf);
 470         g_free(sig_status);
 471
 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);
 475
 476         if (!ssl_certificate_check_subject_cn(new_cert))
 477                 title = _("SSL certificate changed and is invalid");
 478         else
 479                 title = _("SSL certificate changed");
 480         val = alertpanel_full(title, NULL,
 481                               _("_Cancel connection"), _("_Accept and save"), NULL,
 482                               FALSE, vbox2, ALERT_WARNING, G_ALERTDEFAULT);
 483
 484         return (val == G_ALERTALTERNATE);
 485 }
 486 #endif