src/gtk/sslcertwindow.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2006 Hiroyuki Yamamoto
   4  * This file Copyright (C) 2002-2005 Colin Leroy <colin@colino.net>
   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 2 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, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 #  include "config.h"
  23 #endif
  24
  25 #if USE_OPENSSL
  26
  27 #include <openssl/ssl.h>
  28 #include <glib.h>
  29 #include <glib/gi18n.h>
  30 #include <gtk/gtk.h>
  31
  32 #include "prefs_common.h"
  33 #include "ssl_certificate.h"
  34 #include "utils.h"
  35 #include "alertpanel.h"
  36 #include "hooks.h"
  37
  38 gboolean sslcertwindow_ask_new_cert(SSLCertificate *cert);
  39 gboolean sslcertwindow_ask_expired_cert(SSLCertificate *cert);
  40 gboolean sslcertwindow_ask_changed_cert(SSLCertificate *old_cert, SSLCertificate *new_cert);
  41
  42 GtkWidget *cert_presenter(SSLCertificate *cert)
  43 {
  44         GtkWidget *vbox = NULL;
  45         GtkWidget *hbox = NULL;
  46         GtkWidget *frame_owner = NULL;
  47         GtkWidget *frame_signer = NULL;
  48         GtkWidget *frame_status = NULL;
  49         GtkTable *owner_table = NULL;
  50         GtkTable *signer_table = NULL;
  51         GtkTable *status_table = NULL;
  52         GtkWidget *label = NULL;
  53
  54         char buf[100];
  55         char *issuer_commonname, *issuer_location, *issuer_organization;
  56         char *subject_commonname, *subject_location, *subject_organization;
  57         char *fingerprint, *sig_status, *exp_date;
  58         unsigned int n;
  59         unsigned char md[EVP_MAX_MD_SIZE];
  60         ASN1_TIME *validity;
  61         time_t exp_time_t;
  62
  63         /* issuer */
  64         if (X509_NAME_get_text_by_NID(X509_get_issuer_name(cert->x509_cert),
  65                                        NID_commonName, buf, 100) >= 0)
  66                 issuer_commonname = g_strdup(buf);
  67         else
  68                 issuer_commonname = g_strdup(_("<not in certificate>"));
  69         if (X509_NAME_get_text_by_NID(X509_get_issuer_name(cert->x509_cert),
  70                                        NID_localityName, buf, 100) >= 0) {
  71                 issuer_location = g_strdup(buf);
  72                 if (X509_NAME_get_text_by_NID(X509_get_issuer_name(cert->x509_cert),
  73                                        NID_countryName, buf, 100) >= 0)
  74                         issuer_location = g_strconcat(issuer_location,", ",buf, NULL);
  75         } else if (X509_NAME_get_text_by_NID(X509_get_issuer_name(cert->x509_cert),
  76                                        NID_countryName, buf, 100) >= 0)
  77                 issuer_location = g_strdup(buf);
  78         else
  79                 issuer_location = g_strdup(_("<not in certificate>"));
  80
  81         if (X509_NAME_get_text_by_NID(X509_get_issuer_name(cert->x509_cert),
  82                                        NID_organizationName, buf, 100) >= 0)
  83                 issuer_organization = g_strdup(buf);
  84         else
  85                 issuer_organization = g_strdup(_("<not in certificate>"));
  86
  87         /* subject */
  88         if (X509_NAME_get_text_by_NID(X509_get_subject_name(cert->x509_cert),
  89                                        NID_commonName, buf, 100) >= 0)
  90                 subject_commonname = g_strdup(buf);
  91         else
  92                 subject_commonname = g_strdup(_("<not in certificate>"));
  93         if (X509_NAME_get_text_by_NID(X509_get_subject_name(cert->x509_cert),
  94                                        NID_localityName, buf, 100) >= 0) {
  95                 subject_location = g_strdup(buf);
  96                 if (X509_NAME_get_text_by_NID(X509_get_subject_name(cert->x509_cert),
  97                                        NID_countryName, buf, 100) >= 0)
  98                         subject_location = g_strconcat(subject_location,", ",buf, NULL);
  99         } else if (X509_NAME_get_text_by_NID(X509_get_subject_name(cert->x509_cert),
 100                                        NID_countryName, buf, 100) >= 0)
 101                 subject_location = g_strdup(buf);
 102         else
 103                 subject_location = g_strdup(_("<not in certificate>"));
 104
 105         if (X509_NAME_get_text_by_NID(X509_get_subject_name(cert->x509_cert),
 106                                        NID_organizationName, buf, 100) >= 0)
 107                 subject_organization = g_strdup(buf);
 108         else
 109                 subject_organization = g_strdup(_("<not in certificate>"));
 110
 111         if ((validity = X509_get_notAfter(cert->x509_cert)) != NULL) {
 112                 exp_time_t = asn1toTime(validity);
 113         } else {
 114                 exp_time_t = (time_t)0;
 115         }
 116
 117         memset(buf, 0, sizeof(buf));
 118         strftime(buf, sizeof(buf)-1, prefs_common.date_format, localtime(&exp_time_t));
 119         exp_date = buf? g_strdup(buf):g_strdup("?");
 120
 121         /* fingerprint */
 122         X509_digest(cert->x509_cert, EVP_md5(), md, &n);
 123         fingerprint = readable_fingerprint(md, (int)n);
 124
 125         /* signature */
 126         sig_status = ssl_certificate_check_signer(cert->x509_cert);
 127
 128         if (sig_status==NULL)
 129                 sig_status = g_strdup(_("correct"));
 130
 131         vbox = gtk_vbox_new(FALSE, 5);
 132         hbox = gtk_hbox_new(FALSE, 5);
 133
 134         frame_owner  = gtk_frame_new(_("Owner"));
 135         frame_signer = gtk_frame_new(_("Signer"));
 136         frame_status = gtk_frame_new(_("Status"));
 137
 138         owner_table = GTK_TABLE(gtk_table_new(3, 2, FALSE));
 139         signer_table = GTK_TABLE(gtk_table_new(3, 2, FALSE));
 140         status_table = GTK_TABLE(gtk_table_new(3, 2, FALSE));
 141
 142         label = gtk_label_new(_("Name: "));
 143         gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
 144         gtk_table_attach(owner_table, label, 0, 1, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 145         label = gtk_label_new(subject_commonname);
 146         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 147         gtk_table_attach(owner_table, label, 1, 2, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 148
 149         label = gtk_label_new(_("Organization: "));
 150         gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
 151         gtk_table_attach(owner_table, label, 0, 1, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 152         label = gtk_label_new(subject_organization);
 153         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 154         gtk_table_attach(owner_table, label, 1, 2, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 155
 156         label = gtk_label_new(_("Location: "));
 157         gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
 158         gtk_table_attach(owner_table, label, 0, 1, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 159         label = gtk_label_new(subject_location);
 160         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 161         gtk_table_attach(owner_table, label, 1, 2, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 162
 163         label = gtk_label_new(_("Name: "));
 164         gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
 165         gtk_table_attach(signer_table, label, 0, 1, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 166         label = gtk_label_new(issuer_commonname);
 167         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 168         gtk_table_attach(signer_table, label, 1, 2, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 169
 170         label = gtk_label_new(_("Organization: "));
 171         gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
 172         gtk_table_attach(signer_table, label, 0, 1, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 173         label = gtk_label_new(issuer_organization);
 174         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 175         gtk_table_attach(signer_table, label, 1, 2, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 176
 177         label = gtk_label_new(_("Location: "));
 178         gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
 179         gtk_table_attach(signer_table, label, 0, 1, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 180         label = gtk_label_new(issuer_location);
 181         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 182         gtk_table_attach(signer_table, label, 1, 2, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 183
 184         label = gtk_label_new(_("Fingerprint: "));
 185         gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
 186         gtk_table_attach(status_table, label, 0, 1, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 187         label = gtk_label_new(fingerprint);
 188         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 189         gtk_table_attach(status_table, label, 1, 2, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 190         label = gtk_label_new(_("Signature status: "));
 191         gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
 192         gtk_table_attach(status_table, label, 0, 1, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 193         label = gtk_label_new(sig_status);
 194         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 195         gtk_table_attach(status_table, label, 1, 2, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 196         label = gtk_label_new(_("Expires on: "));
 197         gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
 198         gtk_table_attach(status_table, label, 0, 1, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 199         label = gtk_label_new(exp_date);
 200         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 201         gtk_table_attach(status_table, label, 1, 2, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
 202
 203         gtk_container_add(GTK_CONTAINER(frame_owner), GTK_WIDGET(owner_table));
 204         gtk_container_add(GTK_CONTAINER(frame_signer), GTK_WIDGET(signer_table));
 205         gtk_container_add(GTK_CONTAINER(frame_status), GTK_WIDGET(status_table));
 206
 207         gtk_box_pack_end(GTK_BOX(hbox), frame_signer, TRUE, TRUE, 0);
 208         gtk_box_pack_end(GTK_BOX(hbox), frame_owner, TRUE, TRUE, 0);
 209         gtk_box_pack_end(GTK_BOX(vbox), frame_status, TRUE, TRUE, 0);
 210         gtk_box_pack_end(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);
 211
 212         gtk_widget_show_all(vbox);
 213
 214         g_free(issuer_commonname);
 215         g_free(issuer_location);
 216         g_free(issuer_organization);
 217         g_free(subject_commonname);
 218         g_free(subject_location);
 219         g_free(subject_organization);
 220         g_free(fingerprint);
 221         g_free(sig_status);
 222         g_free(exp_date);
 223         return vbox;
 224 }
 225
 226 static gboolean sslcert_ask_hook(gpointer source, gpointer data)
 227 {
 228         SSLCertHookData *hookdata = (SSLCertHookData *)source;
 229
 230         if (prefs_common.skip_ssl_cert_check)
 231                 return TRUE;
 232
 233         if (hookdata == NULL) {
 234                 return FALSE;
 235         }
 236         if (hookdata->old_cert == NULL) {
 237                 if (hookdata->expired)
 238                         hookdata->accept = sslcertwindow_ask_expired_cert(hookdata->cert);
 239                 else
 240                         hookdata->accept = sslcertwindow_ask_new_cert(hookdata->cert);
 241         } else {
 242                 hookdata->accept = sslcertwindow_ask_changed_cert(hookdata->old_cert, hookdata->cert);
 243         }
 244         return TRUE;
 245 }
 246
 247 void sslcertwindow_register_hook(void)
 248 {
 249         hooks_register_hook(SSLCERT_ASK_HOOKLIST, sslcert_ask_hook, NULL);
 250 }
 251
 252 void sslcertwindow_show_cert(SSLCertificate *cert)
 253 {
 254         GtkWidget *cert_widget = cert_presenter(cert);
 255         gchar *buf;
 256
 257         buf = g_strdup_printf(_("SSL certificate for %s"), cert->host);
 258         alertpanel_full(buf, NULL, GTK_STOCK_CLOSE, NULL, NULL,
 259                         FALSE, cert_widget, ALERT_NOTICE, G_ALERTDEFAULT);
 260         g_free(buf);
 261 }
 262
 263 gboolean sslcertwindow_ask_new_cert(SSLCertificate *cert)
 264 {
 265         gchar *buf, *sig_status;
 266         AlertValue val;
 267         GtkWidget *vbox;
 268         GtkWidget *label;
 269         GtkWidget *button;
 270         GtkWidget *cert_widget;
 271
 272         vbox = gtk_vbox_new(FALSE, 5);
 273         buf = g_strdup_printf(_("Certificate for %s is unknown.\nDo you want to accept it?"), cert->host);
 274         label = gtk_label_new(buf);
 275         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 276         gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 0);
 277         g_free(buf);
 278
 279         sig_status = ssl_certificate_check_signer(cert->x509_cert);
 280
 281         if (sig_status==NULL)
 282                 sig_status = g_strdup(_("correct"));
 283
 284         buf = g_strdup_printf(_("Signature status: %s"), sig_status);
 285         label = gtk_label_new(buf);
 286         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 287         gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 0);
 288         g_free(buf);
 289         g_free(sig_status);
 290
 291         button = gtk_expander_new_with_mnemonic(_("_View certificate"));
 292         gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, FALSE, 0);
 293         cert_widget = cert_presenter(cert);
 294         gtk_container_add(GTK_CONTAINER(button), cert_widget);
 295
 296         val = alertpanel_full(_("Unknown SSL Certificate"), NULL,
 297                               _("_Cancel connection"), _("_Accept and save"), NULL,
 298                               FALSE, vbox, ALERT_QUESTION, G_ALERTDEFAULT);
 299
 300         return (val == G_ALERTALTERNATE);
 301 }
 302
 303 gboolean sslcertwindow_ask_expired_cert(SSLCertificate *cert)
 304 {
 305         gchar *buf, *sig_status;
 306         AlertValue val;
 307         GtkWidget *vbox;
 308         GtkWidget *label;
 309         GtkWidget *button;
 310         GtkWidget *cert_widget;
 311
 312         vbox = gtk_vbox_new(FALSE, 5);
 313         buf = g_strdup_printf(_("Certificate for %s is expired.\nDo you want to continue?"), cert->host);
 314         label = gtk_label_new(buf);
 315         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 316         gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 0);
 317         g_free(buf);
 318
 319         sig_status = ssl_certificate_check_signer(cert->x509_cert);
 320
 321         if (sig_status==NULL)
 322                 sig_status = g_strdup(_("correct"));
 323
 324         buf = g_strdup_printf(_("Signature status: %s"), sig_status);
 325         label = gtk_label_new(buf);
 326         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 327         gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 0);
 328         g_free(buf);
 329         g_free(sig_status);
 330
 331         button = gtk_expander_new_with_mnemonic(_("_View certificate"));
 332         gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, FALSE, 0);
 333         cert_widget = cert_presenter(cert);
 334         gtk_container_add(GTK_CONTAINER(button), cert_widget);
 335
 336         val = alertpanel_full(_("Expired SSL Certificate"), NULL,
 337                               _("_Cancel connection"), _("_Accept"), NULL,
 338                               FALSE, vbox, ALERT_QUESTION, G_ALERTDEFAULT);
 339
 340         return (val == G_ALERTALTERNATE);
 341 }
 342
 343 gboolean sslcertwindow_ask_changed_cert(SSLCertificate *old_cert, SSLCertificate *new_cert)
 344 {
 345         GtkWidget *old_cert_widget = cert_presenter(old_cert);
 346         GtkWidget *new_cert_widget = cert_presenter(new_cert);
 347         GtkWidget *vbox;
 348         gchar *buf, *sig_status;
 349         GtkWidget *vbox2;
 350         GtkWidget *label;
 351         GtkWidget *button;
 352         AlertValue val;
 353
 354         vbox = gtk_vbox_new(FALSE, 5);
 355         label = gtk_label_new(_("New certificate:"));
 356         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 357         gtk_box_pack_end(GTK_BOX(vbox), new_cert_widget, TRUE, TRUE, 0);
 358         gtk_box_pack_end(GTK_BOX(vbox), label, TRUE, TRUE, 0);
 359         gtk_box_pack_end(GTK_BOX(vbox), gtk_hseparator_new(), TRUE, TRUE, 0);
 360         label = gtk_label_new(_("Known certificate:"));
 361         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 362         gtk_box_pack_end(GTK_BOX(vbox), old_cert_widget, TRUE, TRUE, 0);
 363         gtk_box_pack_end(GTK_BOX(vbox), label, TRUE, TRUE, 0);
 364         gtk_widget_show_all(vbox);
 365
 366         vbox2 = gtk_vbox_new(FALSE, 5);
 367         buf = g_strdup_printf(_("Certificate for %s has changed. Do you want to accept it?"), new_cert->host);
 368         label = gtk_label_new(buf);
 369         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 370         gtk_box_pack_start(GTK_BOX(vbox2), label, TRUE, TRUE, 0);
 371         g_free(buf);
 372
 373         sig_status = ssl_certificate_check_signer(new_cert->x509_cert);
 374
 375         if (sig_status==NULL)
 376                 sig_status = g_strdup(_("correct"));
 377
 378         buf = g_strdup_printf(_("Signature status: %s"), sig_status);
 379         label = gtk_label_new(buf);
 380         gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
 381         gtk_box_pack_start(GTK_BOX(vbox2), label, TRUE, TRUE, 0);
 382         g_free(buf);
 383         g_free(sig_status);
 384
 385         button = gtk_expander_new_with_mnemonic(_("_View certificates"));
 386         gtk_box_pack_start(GTK_BOX(vbox2), button, FALSE, FALSE, 0);
 387         gtk_container_add(GTK_CONTAINER(button), vbox);
 388
 389         val = alertpanel_full(_("Changed SSL Certificate"), NULL,
 390                               _("_Cancel connection"), _("_Accept and save"), NULL,
 391                               FALSE, vbox2, ALERT_WARNING, G_ALERTDEFAULT);
 392
 393         return (val == G_ALERTALTERNATE);
 394 }
 395 #endif