Factorize SSL things in etpan

[claws.git] / src / etpan / etpan-ssl.c

diff --git a/src/etpan/etpan-ssl.c b/src/etpan/etpan-ssl.c
new file mode 100644 (file)
index 0000000..6642e40
--- /dev/null
+++ b/src/etpan/etpan-ssl.c
@@ -0,0 +1,121 @@
+/*
+ * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
+ * Copyright (C) 1999-2012 Colin Leroy <colin@colino.net> 
+ * and the Claws Mail team
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#include "claws-features.h"
+#endif
+
+#ifdef USE_GNUTLS
+#ifdef HAVE_LIBETPAN
+#include <libetpan/libetpan.h>
+#include <gnutls/gnutls.h>
+#include <gnutls/x509.h>
+#include <stdlib.h>
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <errno.h>
+
+#include "ssl_certificate.h"
+#include "utils.h"
+#include "log.h"
+#include "prefs_account.h"
+
+gboolean etpan_certificate_check(mailstream *stream, const char *host, gint port)
+{
+       unsigned char *cert_der = NULL;
+       int len;
+       gnutls_x509_crt_t cert = NULL;
+       gnutls_datum_t tmp;
+
+       if (stream == NULL)
+               return FALSE;
+
+       len = (int)mailstream_ssl_get_certificate(stream, &cert_der);
+
+       if (cert_der == NULL || len < 0) {
+               g_warning("no cert presented.\n");
+               return FALSE;
+       }
+
+       tmp.data = malloc(len);
+       memcpy(tmp.data, cert_der, len);
+       tmp.size = len;
+       gnutls_x509_crt_init(&cert);
+
+       free(cert_der);
+
+       if (gnutls_x509_crt_import(cert, &tmp, GNUTLS_X509_FMT_DER) < 0) {
+               free(tmp.data);
+               g_warning("IMAP: can't get cert\n");
+               return FALSE;
+       } else if (ssl_certificate_check(cert, (guint)-1, host, port) == TRUE) {
+               free(tmp.data);
+               gnutls_x509_crt_deinit(cert);
+               return TRUE;
+       } else {
+               free(tmp.data);
+               gnutls_x509_crt_deinit(cert);
+               return FALSE;
+       }
+}
+
+void etpan_connect_ssl_context_cb(struct mailstream_ssl_context * ssl_context, void * data)
+{
+       PrefsAccount *account = (PrefsAccount *)data;
+       const gchar *cert_path = NULL;
+       const gchar *password = NULL;
+       gnutls_x509_crt_t x509 = NULL;
+       gnutls_x509_privkey_t pkey = NULL;
+
+       if (account->in_ssl_client_cert_file && *account->in_ssl_client_cert_file)
+               cert_path = account->in_ssl_client_cert_file;
+       if (account->in_ssl_client_cert_pass && *account->in_ssl_client_cert_pass)
+               password = account->in_ssl_client_cert_pass;
+
+       if (mailstream_ssl_set_client_certificate_data(ssl_context, NULL, 0) < 0 ||
+           mailstream_ssl_set_client_private_key_data(ssl_context, NULL, 0) < 0)
+               debug_print("Impossible to set the client certificate.\n");
+       x509 = ssl_certificate_get_x509_from_pem_file(cert_path);
+       pkey = ssl_certificate_get_pkey_from_pem_file(cert_path);
+       if (!(x509 && pkey)) {
+               /* try pkcs12 format */
+               ssl_certificate_get_x509_and_pkey_from_p12_file(cert_path, password, &x509, &pkey);
+       }
+       if (x509 && pkey) {
+               unsigned char *x509_der = NULL, *pkey_der = NULL;
+               size_t x509_len, pkey_len;
+
+               x509_len = (size_t)gnutls_i2d_X509(x509, &x509_der);
+               pkey_len = (size_t)gnutls_i2d_PrivateKey(pkey, &pkey_der);
+               if (x509_len > 0 && pkey_len > 0) {
+                       if (mailstream_ssl_set_client_certificate_data(ssl_context, x509_der, x509_len) < 0 ||
+                           mailstream_ssl_set_client_private_key_data(ssl_context, pkey_der, pkey_len) < 0) 
+                               log_error(LOG_PROTOCOL, _("Impossible to set the client certificate.\n"));
+                       g_free(x509_der);
+                       g_free(pkey_der);
+               }
+               gnutls_x509_crt_deinit(x509);
+               gnutls_x509_privkey_deinit(pkey);
+       }
+}
+
+#endif /* USE_GNUTLS */
+#endif /* HAVE_LIBETPAN */