2 ** Copyright (C) 2006 Thadeu Lima de Souza Cascardo <cascardo@minaslivre.org>
3 ** Copyright (C) 2009 Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
5 ** This program is free software; you can redistribute it and/or modify
6 ** it under the terms of the GNU General Public License as published by
7 ** the Free Software Foundation; either version 2 of the License, or
8 ** (at your option) any later version.
10 ** This program is distributed in the hope that it will be useful,
11 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 ** GNU General Public License for more details.
15 ** You should have received a copy of the GNU General Public License
16 ** along with this program; if not, write to the Free Software
17 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 #include <gnutls/gnutls.h>
26 #include "hcconn_internal.h"
30 gnutls_session_t session;
37 ssl_client_session_new (gnutls_session_t *session)
39 int kx_prio[] = {GNUTLS_KX_RSA, 0};
40 gnutls_certificate_credentials cred;
41 gnutls_certificate_allocate_credentials (&cred);
42 gnutls_init (session, GNUTLS_CLIENT);
43 gnutls_set_default_priority (*session);
44 gnutls_kx_set_priority (*session, kx_prio);
45 gnutls_credentials_set (*session, GNUTLS_CRD_CERTIFICATE, cred);
48 static struct ssl_data *
49 ssl_data_new_client (void)
52 ssl = g_slice_new (struct ssl_data);
53 ssl_client_session_new (&ssl->session);
54 ssl->buffer = g_string_sized_new (4096);
55 ssl->handshaking = FALSE;
60 ssl_data_destroy (struct ssl_data *ssl)
62 gnutls_deinit (ssl->session);
63 g_string_free (ssl->buffer, TRUE);
64 g_slice_free (struct ssl_data, ssl);
68 ssl_push (gnutls_transport_ptr_t ptr, const void *buffer, size_t len)
71 struct ssl_data *ssl = conn->layer;
72 hc_conn_write (ssl->lowconn, (void *) buffer, len);
77 ssl_pull (gnutls_transport_ptr_t ptr, void *buffer, size_t len)
80 struct ssl_data *ssl = conn->layer;
82 if (ssl->handshaking == TRUE)
84 r = hc_conn_read (ssl->lowconn, buffer, len);
87 if (len > ssl->buffer->len)
90 memcpy (buffer, ssl->buffer->str, r);
91 g_string_truncate (ssl->buffer, 0);
96 memcpy (buffer, ssl->buffer->str, r);
97 g_string_erase (ssl->buffer, 0, r);
101 gnutls_transport_set_errno (ssl->session, EAGAIN);
108 ssl_server_handshake (struct ssl_data *ssl)
111 if ((error = gnutls_handshake (ssl->session)) < 0)
113 if (gnutls_error_is_fatal (error))
114 g_critical ("Fatal error while doing TLS handshaking: %s\n",
115 gnutls_strerror (error));
119 ssl->handshaking = FALSE;
124 ssl_server_connect (HCConn *conn)
126 struct ssl_data *ssl = conn->layer;
127 gnutls_transport_set_ptr (ssl->session, (gnutls_transport_ptr_t) conn);
128 gnutls_transport_set_push_function (ssl->session, ssl_push);
129 gnutls_transport_set_pull_function (ssl->session, ssl_pull);
130 ssl->handshaking = TRUE;
131 ssl_server_handshake (ssl);
135 hc_conn_ssl_close (gpointer data)
137 struct ssl_data *ssl = data;
140 gnutls_bye (ssl->session, GNUTLS_SHUT_RDWR);
141 hc_conn_close (ssl->lowconn);
142 ssl_data_destroy (ssl);
147 hc_conn_ssl_read (gpointer data, gchar *buffer, size_t len)
149 struct ssl_data *ssl = data;
150 return gnutls_record_recv (ssl->session, buffer, len);
154 hc_conn_ssl_write (gpointer data, gchar *buffer, size_t len)
156 struct ssl_data *ssl = data;
157 return gnutls_record_send (ssl->session, buffer, len);
161 hc_conn_ssl_watch (HCConn *conn, HCEvent event, gpointer data)
164 HCConn *ssl_conn = data;
165 struct ssl_data *ssl = ssl_conn->layer;
170 if (ssl->handshaking)
172 ssl_server_handshake (ssl);
175 while ((r = hc_conn_read (ssl->lowconn, buffer, sizeof (buffer))) > 0)
176 g_string_append_len (ssl->buffer, buffer, r);
177 if (ssl_conn->func && !ssl->handshaking)
178 ssl_conn->func (ssl_conn, event, ssl_conn->data);
182 ssl_conn->func (ssl_conn, event, ssl_conn->data);
187 hc_conn_set_driver_ssl_client (HCConn *conn, HCConn *lowconn)
189 struct ssl_data *ssl = ssl_data_new_client ();
190 ssl->lowconn = lowconn;
192 conn->read = hc_conn_ssl_read;
193 conn->write = hc_conn_ssl_write;
194 conn->close = hc_conn_ssl_close;
195 hc_conn_set_callback (lowconn, hc_conn_ssl_watch, conn);
196 ssl_server_connect (conn);