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;
36 static struct ssl_data *
40 int kx_prio[] = {GNUTLS_KX_RSA, 0};
41 gnutls_certificate_credentials cred;
42 gnutls_certificate_allocate_credentials (&cred);
43 ssl = g_slice_new (struct ssl_data);
44 gnutls_init (&ssl->session, GNUTLS_CLIENT);
45 gnutls_set_default_priority (ssl->session);
46 gnutls_kx_set_priority (ssl->session, kx_prio);
47 gnutls_credentials_set (ssl->session, GNUTLS_CRD_CERTIFICATE, cred);
48 ssl->buffer = g_string_sized_new (4096);
49 ssl->handshaking = FALSE;
54 ssl_data_destroy (struct ssl_data *ssl)
56 gnutls_deinit (ssl->session);
57 g_string_free (ssl->buffer, TRUE);
58 g_slice_free (struct ssl_data, ssl);
62 ssl_push (gnutls_transport_ptr_t ptr, const void *buffer, size_t len)
65 struct ssl_data *ssl = conn->layer;
66 hc_conn_write (ssl->lowconn, (void *) buffer, len);
71 ssl_pull (gnutls_transport_ptr_t ptr, void *buffer, size_t len)
74 struct ssl_data *ssl = conn->layer;
76 if (ssl->handshaking == TRUE)
78 r = hc_conn_read (ssl->lowconn, buffer, len);
81 if (len > ssl->buffer->len)
84 memcpy (buffer, ssl->buffer->str, r);
85 g_string_truncate (ssl->buffer, 0);
90 memcpy (buffer, ssl->buffer->str, r);
91 g_string_erase (ssl->buffer, 0, r);
95 gnutls_transport_set_errno (ssl->session, EAGAIN);
102 ssl_server_handshake (struct ssl_data *ssl)
105 if ((error = gnutls_handshake (ssl->session)) < 0)
107 if (gnutls_error_is_fatal (error))
108 g_critical ("Fatal error while doing TLS handshaking: %s\n",
109 gnutls_strerror (error));
113 ssl->handshaking = FALSE;
118 ssl_server_connect (HCConn *conn)
120 struct ssl_data *ssl = conn->layer;
121 gnutls_transport_set_ptr (ssl->session, (gnutls_transport_ptr_t) conn);
122 gnutls_transport_set_push_function (ssl->session, ssl_push);
123 gnutls_transport_set_pull_function (ssl->session, ssl_pull);
124 ssl->handshaking = TRUE;
125 ssl_server_handshake (ssl);
129 hc_conn_ssl_close (gpointer data)
131 struct ssl_data *ssl = data;
134 gnutls_bye (ssl->session, GNUTLS_SHUT_RDWR);
135 hc_conn_close (ssl->lowconn);
136 ssl_data_destroy (ssl);
141 hc_conn_ssl_read (gpointer data, gchar *buffer, size_t len)
143 struct ssl_data *ssl = data;
144 return gnutls_record_recv (ssl->session, buffer, len);
148 hc_conn_ssl_write (gpointer data, gchar *buffer, size_t len)
150 struct ssl_data *ssl = data;
151 return gnutls_record_send (ssl->session, buffer, len);
155 hc_conn_ssl_watch (HCConn *conn, HCEvent event, gpointer data)
158 HCConn *ssl_conn = data;
159 struct ssl_data *ssl = ssl_conn->layer;
164 if (ssl->handshaking)
166 ssl_server_handshake (ssl);
169 while ((r = hc_conn_read (ssl->lowconn, buffer, sizeof (buffer))) > 0)
170 g_string_append_len (ssl->buffer, buffer, r);
171 if (ssl_conn->func && !ssl->handshaking)
172 ssl_conn->func (ssl_conn, event, ssl_conn->data);
176 ssl_conn->func (ssl_conn, event, ssl_conn->data);
181 hc_conn_set_driver_ssl (HCConn *conn, HCConn *lowconn)
183 struct ssl_data *ssl = ssl_data_new ();
184 ssl->lowconn = lowconn;
186 conn->read = hc_conn_ssl_read;
187 conn->write = hc_conn_ssl_write;
188 conn->close = hc_conn_ssl_close;
189 hc_conn_set_callback (lowconn, hc_conn_ssl_watch, conn);
190 ssl_server_connect (conn);