486 lines
17 KiB
C
486 lines
17 KiB
C
/*
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* Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
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* Copyright (C) 1999-2012 Colin Leroy <colin@colino.net>
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* and the Claws Mail team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#include "claws-features.h"
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#endif
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#ifdef USE_GNUTLS
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#include <gnutls/gnutls.h>
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#include <gnutls/x509.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <glib.h>
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#include <glib/gi18n.h>
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#include <gtk/gtk.h>
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#include "prefs_common.h"
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#include "defs.h"
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#include "ssl_certificate.h"
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#include "utils.h"
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#include "alertpanel.h"
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#include "hooks.h"
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static gboolean sslcertwindow_ask_new_cert(SSLCertificate *cert);
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static gboolean sslcertwindow_ask_expired_cert(SSLCertificate *cert);
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static gboolean sslcertwindow_ask_changed_cert(SSLCertificate *old_cert, SSLCertificate *new_cert);
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static GtkWidget *cert_presenter(SSLCertificate *cert)
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{
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GtkWidget *vbox = NULL;
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GtkWidget *hbox = NULL;
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GtkWidget *frame_owner = NULL;
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GtkWidget *frame_signer = NULL;
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GtkWidget *frame_status = NULL;
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GtkTable *owner_table = NULL;
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GtkTable *signer_table = NULL;
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GtkTable *status_table = NULL;
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GtkWidget *label = NULL;
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char *issuer_commonname, *issuer_location, *issuer_organization;
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char *subject_commonname, *subject_location, *subject_organization;
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char *sig_status, *exp_date;
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char *md5_fingerprint, *sha1_fingerprint, *fingerprint;
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size_t n;
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char buf[100];
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unsigned char md[128];
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char *tmp;
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time_t exp_time_t;
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struct tm lt;
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/* issuer */
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issuer_commonname = g_malloc(BUFFSIZE);
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issuer_location = g_malloc(BUFFSIZE);
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issuer_organization = g_malloc(BUFFSIZE);
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subject_commonname = g_malloc(BUFFSIZE);
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subject_location = g_malloc(BUFFSIZE);
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subject_organization = g_malloc(BUFFSIZE);
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n = BUFFSIZE;
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if (gnutls_x509_crt_get_issuer_dn_by_oid(cert->x509_cert,
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GNUTLS_OID_X520_COMMON_NAME, 0, 0, issuer_commonname, &n))
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strncpy(issuer_commonname, _("<not in certificate>"), BUFFSIZE);
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n = BUFFSIZE;
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if (gnutls_x509_crt_get_issuer_dn_by_oid(cert->x509_cert,
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GNUTLS_OID_X520_LOCALITY_NAME, 0, 0, issuer_location, &n)) {
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if (gnutls_x509_crt_get_issuer_dn_by_oid(cert->x509_cert,
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GNUTLS_OID_X520_COUNTRY_NAME, 0, 0, issuer_location, &n)) {
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strncpy(issuer_location, _("<not in certificate>"), BUFFSIZE);
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}
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} else {
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tmp = g_malloc(BUFFSIZE);
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if (gnutls_x509_crt_get_issuer_dn_by_oid(cert->x509_cert,
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GNUTLS_OID_X520_COUNTRY_NAME, 0, 0, tmp, &n) == 0) {
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strncat(issuer_location, ", ", BUFFSIZE-strlen(issuer_location)-1);
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strncat(issuer_location, tmp, BUFFSIZE-strlen(issuer_location)-1);
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}
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g_free(tmp);
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}
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n = BUFFSIZE;
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if (gnutls_x509_crt_get_issuer_dn_by_oid(cert->x509_cert,
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GNUTLS_OID_X520_ORGANIZATION_NAME, 0, 0, issuer_organization, &n))
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strncpy(issuer_organization, _("<not in certificate>"), BUFFSIZE);
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n = BUFFSIZE;
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if (gnutls_x509_crt_get_dn_by_oid(cert->x509_cert,
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GNUTLS_OID_X520_COMMON_NAME, 0, 0, subject_commonname, &n))
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strncpy(subject_commonname, _("<not in certificate>"), BUFFSIZE);
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n = BUFFSIZE;
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if (gnutls_x509_crt_get_dn_by_oid(cert->x509_cert,
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GNUTLS_OID_X520_LOCALITY_NAME, 0, 0, subject_location, &n)) {
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if (gnutls_x509_crt_get_dn_by_oid(cert->x509_cert,
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GNUTLS_OID_X520_COUNTRY_NAME, 0, 0, subject_location, &n)) {
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strncpy(subject_location, _("<not in certificate>"), BUFFSIZE);
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}
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} else {
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tmp = g_malloc(BUFFSIZE);
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if (gnutls_x509_crt_get_dn_by_oid(cert->x509_cert,
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GNUTLS_OID_X520_COUNTRY_NAME, 0, 0, tmp, &n) == 0) {
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strncat(subject_location, ", ", BUFFSIZE-strlen(subject_location)-1);
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strncat(subject_location, tmp, BUFFSIZE-strlen(subject_location)-1);
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}
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g_free(tmp);
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}
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n = BUFFSIZE;
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if (gnutls_x509_crt_get_dn_by_oid(cert->x509_cert,
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GNUTLS_OID_X520_ORGANIZATION_NAME, 0, 0, subject_organization, &n))
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strncpy(subject_organization, _("<not in certificate>"), BUFFSIZE);
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exp_time_t = gnutls_x509_crt_get_expiration_time(cert->x509_cert);
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memset(buf, 0, sizeof(buf));
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if (exp_time_t > 0) {
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fast_strftime(buf, sizeof(buf)-1, prefs_common.date_format, localtime_r(&exp_time_t, <));
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exp_date = (*buf) ? g_strdup(buf):g_strdup("?");
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} else
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exp_date = g_strdup("");
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/* fingerprint */
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n = 128;
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gnutls_x509_crt_get_fingerprint(cert->x509_cert, GNUTLS_DIG_MD5, md, &n);
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md5_fingerprint = readable_fingerprint(md, (int)n);
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n = 128;
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gnutls_x509_crt_get_fingerprint(cert->x509_cert, GNUTLS_DIG_SHA1, md, &n);
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sha1_fingerprint = readable_fingerprint(md, (int)n);
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/* signature */
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sig_status = ssl_certificate_check_signer(cert, cert->status);
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if (sig_status==NULL)
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sig_status = g_strdup(_("Correct"));
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vbox = gtk_vbox_new(FALSE, 5);
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hbox = gtk_hbox_new(FALSE, 5);
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frame_owner = gtk_frame_new(_("Owner"));
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frame_signer = gtk_frame_new(_("Signer"));
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frame_status = gtk_frame_new(_("Status"));
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owner_table = GTK_TABLE(gtk_table_new(3, 2, FALSE));
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signer_table = GTK_TABLE(gtk_table_new(3, 2, FALSE));
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status_table = GTK_TABLE(gtk_table_new(3, 2, FALSE));
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label = gtk_label_new(_("Name: "));
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gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
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gtk_table_attach(owner_table, label, 0, 1, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(subject_commonname);
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gtk_label_set_selectable(GTK_LABEL(label), TRUE);
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gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
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gtk_table_attach(owner_table, label, 1, 2, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(_("Organization: "));
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gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
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gtk_table_attach(owner_table, label, 0, 1, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(subject_organization);
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gtk_label_set_selectable(GTK_LABEL(label), TRUE);
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gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
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gtk_table_attach(owner_table, label, 1, 2, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(_("Location: "));
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gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
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gtk_table_attach(owner_table, label, 0, 1, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(subject_location);
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gtk_label_set_selectable(GTK_LABEL(label), TRUE);
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gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
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gtk_table_attach(owner_table, label, 1, 2, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(_("Name: "));
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gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
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gtk_table_attach(signer_table, label, 0, 1, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(issuer_commonname);
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gtk_label_set_selectable(GTK_LABEL(label), TRUE);
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gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
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gtk_table_attach(signer_table, label, 1, 2, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(_("Organization: "));
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gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
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gtk_table_attach(signer_table, label, 0, 1, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(issuer_organization);
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gtk_label_set_selectable(GTK_LABEL(label), TRUE);
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gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
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gtk_table_attach(signer_table, label, 1, 2, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(_("Location: "));
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gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
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gtk_table_attach(signer_table, label, 0, 1, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(issuer_location);
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gtk_label_set_selectable(GTK_LABEL(label), TRUE);
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gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
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gtk_table_attach(signer_table, label, 1, 2, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(_("Fingerprint: \n"));
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gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
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gtk_table_attach(status_table, label, 0, 1, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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fingerprint = g_strdup_printf("MD5: %s\nSHA1: %s",
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md5_fingerprint, sha1_fingerprint);
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label = gtk_label_new(fingerprint);
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g_free(fingerprint);
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gtk_label_set_selectable(GTK_LABEL(label), TRUE);
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gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
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gtk_table_attach(status_table, label, 1, 2, 0, 1, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(_("Signature status: "));
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gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
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gtk_table_attach(status_table, label, 0, 1, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(sig_status);
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gtk_label_set_selectable(GTK_LABEL(label), TRUE);
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gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
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gtk_table_attach(status_table, label, 1, 2, 1, 2, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(_("Expires on: "));
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gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
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gtk_table_attach(status_table, label, 0, 1, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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label = gtk_label_new(exp_date);
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gtk_label_set_selectable(GTK_LABEL(label), TRUE);
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gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
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gtk_table_attach(status_table, label, 1, 2, 2, 3, GTK_EXPAND|GTK_FILL, 0, 0, 0);
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gtk_container_add(GTK_CONTAINER(frame_owner), GTK_WIDGET(owner_table));
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gtk_container_add(GTK_CONTAINER(frame_signer), GTK_WIDGET(signer_table));
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gtk_container_add(GTK_CONTAINER(frame_status), GTK_WIDGET(status_table));
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gtk_box_pack_end(GTK_BOX(hbox), frame_signer, TRUE, TRUE, 0);
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gtk_box_pack_end(GTK_BOX(hbox), frame_owner, TRUE, TRUE, 0);
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gtk_box_pack_end(GTK_BOX(vbox), frame_status, TRUE, TRUE, 0);
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gtk_box_pack_end(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);
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gtk_widget_show_all(vbox);
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g_free(issuer_commonname);
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g_free(issuer_location);
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g_free(issuer_organization);
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g_free(subject_commonname);
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g_free(subject_location);
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g_free(subject_organization);
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g_free(md5_fingerprint);
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g_free(sha1_fingerprint);
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g_free(sig_status);
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g_free(exp_date);
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return vbox;
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}
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static gboolean sslcert_ask_hook(gpointer source, gpointer data)
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{
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SSLCertHookData *hookdata = (SSLCertHookData *)source;
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if (hookdata == NULL) {
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return FALSE;
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}
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if (prefs_common.skip_ssl_cert_check) {
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hookdata->accept = TRUE;
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return TRUE;
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}
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if (hookdata->old_cert == NULL) {
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if (hookdata->expired)
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hookdata->accept = sslcertwindow_ask_expired_cert(hookdata->cert);
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else
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hookdata->accept = sslcertwindow_ask_new_cert(hookdata->cert);
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} else {
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hookdata->accept = sslcertwindow_ask_changed_cert(hookdata->old_cert, hookdata->cert);
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}
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return TRUE;
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}
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void sslcertwindow_register_hook(void)
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{
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hooks_register_hook(SSLCERT_ASK_HOOKLIST, sslcert_ask_hook, NULL);
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}
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void sslcertwindow_show_cert(SSLCertificate *cert)
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{
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GtkWidget *cert_widget = cert_presenter(cert);
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gchar *buf;
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buf = g_strdup_printf(_("SSL certificate for %s"), cert->host);
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alertpanel_full(buf, NULL, GTK_STOCK_CLOSE, NULL, NULL,
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FALSE, cert_widget, ALERT_NOTICE, G_ALERTDEFAULT);
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g_free(buf);
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}
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static gchar *sslcertwindow_get_invalid_str(SSLCertificate *cert)
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{
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gchar *subject_cn = NULL;
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gchar *str = NULL;
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if (ssl_certificate_check_subject_cn(cert))
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return g_strdup("");
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subject_cn = ssl_certificate_get_subject_cn(cert);
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str = g_strdup_printf(_("Certificate is for %s, but connection is to %s.\n"
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"You may be connecting to a rogue server.\n\n"),
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subject_cn, cert->host);
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g_free(subject_cn);
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return str;
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}
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static gboolean sslcertwindow_ask_new_cert(SSLCertificate *cert)
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{
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gchar *buf, *sig_status;
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AlertValue val;
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GtkWidget *vbox;
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GtkWidget *label;
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GtkWidget *button;
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GtkWidget *cert_widget;
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gchar *invalid_str = sslcertwindow_get_invalid_str(cert);
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const gchar *title;
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vbox = gtk_vbox_new(FALSE, 5);
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buf = g_strdup_printf(_("Certificate for %s is unknown.\n%sDo you want to accept it?"), cert->host, invalid_str);
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g_free(invalid_str);
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label = gtk_label_new(buf);
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gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
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gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 0);
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g_free(buf);
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sig_status = ssl_certificate_check_signer(cert, cert->status);
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if (sig_status==NULL)
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sig_status = g_strdup(_("Correct"));
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buf = g_strdup_printf(_("Signature status: %s"), sig_status);
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label = gtk_label_new(buf);
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gtk_label_set_selectable(GTK_LABEL(label), TRUE);
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gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
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gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 0);
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g_free(buf);
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g_free(sig_status);
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button = gtk_expander_new_with_mnemonic(_("_View certificate"));
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gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, FALSE, 0);
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cert_widget = cert_presenter(cert);
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gtk_container_add(GTK_CONTAINER(button), cert_widget);
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if (!ssl_certificate_check_subject_cn(cert))
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title = _("SSL certificate is invalid");
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else
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title = _("SSL certificate is unknown");
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val = alertpanel_full(title, NULL,
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_("_Cancel connection"), _("_Accept and save"), NULL,
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FALSE, vbox, ALERT_QUESTION, G_ALERTDEFAULT);
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return (val == G_ALERTALTERNATE);
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}
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static gboolean sslcertwindow_ask_expired_cert(SSLCertificate *cert)
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{
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gchar *buf, *sig_status;
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AlertValue val;
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GtkWidget *vbox;
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GtkWidget *label;
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GtkWidget *button;
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GtkWidget *cert_widget;
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gchar *invalid_str = sslcertwindow_get_invalid_str(cert);
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const gchar *title;
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vbox = gtk_vbox_new(FALSE, 5);
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buf = g_strdup_printf(_("Certificate for %s is expired.\n%sDo you want to continue?"), cert->host, invalid_str);
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g_free(invalid_str);
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label = gtk_label_new(buf);
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gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
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gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 0);
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g_free(buf);
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sig_status = ssl_certificate_check_signer(cert, cert->status);
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if (sig_status==NULL)
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sig_status = g_strdup(_("Correct"));
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buf = g_strdup_printf(_("Signature status: %s"), sig_status);
|
|
label = gtk_label_new(buf);
|
|
gtk_label_set_selectable(GTK_LABEL(label), TRUE);
|
|
gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
|
|
gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 0);
|
|
g_free(buf);
|
|
g_free(sig_status);
|
|
|
|
button = gtk_expander_new_with_mnemonic(_("_View certificate"));
|
|
gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, FALSE, 0);
|
|
cert_widget = cert_presenter(cert);
|
|
gtk_container_add(GTK_CONTAINER(button), cert_widget);
|
|
|
|
if (!ssl_certificate_check_subject_cn(cert))
|
|
title = _("SSL certificate is invalid and expired");
|
|
else
|
|
title = _("SSL certificate is expired");
|
|
|
|
val = alertpanel_full(title, NULL,
|
|
_("_Cancel connection"), _("_Accept"), NULL,
|
|
FALSE, vbox, ALERT_QUESTION, G_ALERTDEFAULT);
|
|
|
|
return (val == G_ALERTALTERNATE);
|
|
}
|
|
|
|
static gboolean sslcertwindow_ask_changed_cert(SSLCertificate *old_cert, SSLCertificate *new_cert)
|
|
{
|
|
GtkWidget *old_cert_widget = cert_presenter(old_cert);
|
|
GtkWidget *new_cert_widget = cert_presenter(new_cert);
|
|
GtkWidget *vbox;
|
|
gchar *buf, *sig_status;
|
|
GtkWidget *vbox2;
|
|
GtkWidget *label;
|
|
GtkWidget *button;
|
|
AlertValue val;
|
|
gchar *invalid_str = sslcertwindow_get_invalid_str(new_cert);
|
|
const gchar *title;
|
|
|
|
vbox = gtk_vbox_new(FALSE, 5);
|
|
label = gtk_label_new(_("New certificate:"));
|
|
gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
|
|
gtk_box_pack_end(GTK_BOX(vbox), new_cert_widget, TRUE, TRUE, 0);
|
|
gtk_box_pack_end(GTK_BOX(vbox), label, TRUE, TRUE, 0);
|
|
gtk_box_pack_end(GTK_BOX(vbox), gtk_hseparator_new(), TRUE, TRUE, 0);
|
|
label = gtk_label_new(_("Known certificate:"));
|
|
gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
|
|
gtk_box_pack_end(GTK_BOX(vbox), old_cert_widget, TRUE, TRUE, 0);
|
|
gtk_box_pack_end(GTK_BOX(vbox), label, TRUE, TRUE, 0);
|
|
gtk_widget_show_all(vbox);
|
|
|
|
vbox2 = gtk_vbox_new(FALSE, 5);
|
|
buf = g_strdup_printf(_("Certificate for %s has changed.\n%sDo you want to accept it?"), new_cert->host, invalid_str);
|
|
g_free(invalid_str);
|
|
|
|
label = gtk_label_new(buf);
|
|
gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
|
|
gtk_box_pack_start(GTK_BOX(vbox2), label, TRUE, TRUE, 0);
|
|
g_free(buf);
|
|
|
|
sig_status = ssl_certificate_check_signer(new_cert, new_cert->status);
|
|
|
|
if (sig_status==NULL)
|
|
sig_status = g_strdup(_("Correct"));
|
|
|
|
buf = g_strdup_printf(_("Signature status: %s"), sig_status);
|
|
label = gtk_label_new(buf);
|
|
gtk_label_set_selectable(GTK_LABEL(label), TRUE);
|
|
gtk_misc_set_alignment (GTK_MISC (label), 0, 0.5);
|
|
gtk_box_pack_start(GTK_BOX(vbox2), label, TRUE, TRUE, 0);
|
|
g_free(buf);
|
|
g_free(sig_status);
|
|
|
|
button = gtk_expander_new_with_mnemonic(_("_View certificates"));
|
|
gtk_box_pack_start(GTK_BOX(vbox2), button, FALSE, FALSE, 0);
|
|
gtk_container_add(GTK_CONTAINER(button), vbox);
|
|
|
|
if (!ssl_certificate_check_subject_cn(new_cert))
|
|
title = _("SSL certificate changed and is invalid");
|
|
else
|
|
title = _("SSL certificate changed");
|
|
val = alertpanel_full(title, NULL,
|
|
_("_Cancel connection"), _("_Accept and save"), NULL,
|
|
FALSE, vbox2, ALERT_WARNING, G_ALERTDEFAULT);
|
|
|
|
return (val == G_ALERTALTERNATE);
|
|
}
|
|
#endif
|