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.
25 #include <gnutls/gnutls.h>
26 #include <netinet/in.h>
27 #include <arpa/inet.h>
33 #include "hcconn_ssl.h"
34 #include "tcp_connect.h"
38 #define CONFFILE SYSCONFDIR "/popproxy.conf"
48 server_conn_new (char *server, char *port, int ssl)
54 fd = hc_tcp_connect (server, port);
57 g_warning ("Could not connect to server at %s:%s.", server, port);
60 conn = hc_conn_new (NULL, NULL);
61 r = hc_conn_set_driver_channel (conn, fd);
70 ssl_conn = hc_conn_new (NULL, NULL);
71 r = hc_conn_set_driver_ssl_client (ssl_conn, conn);
74 hc_conn_close (ssl_conn);
82 client_conn_new (int fd)
88 conn = hc_conn_new (NULL, NULL);
89 r = hc_conn_set_driver_channel (conn, fd);
96 ssl_conn = hc_conn_new (NULL, NULL);
97 hc_conn_set_driver_ssl_server (ssl_conn, conn);
100 hc_conn_close (ssl_conn);
101 hc_conn_close (conn);
104 pop_conn = hc_conn_new (NULL, NULL);
105 r = hc_conn_set_driver_pop (pop_conn, ssl_conn);
108 hc_conn_close (pop_conn);
109 hc_conn_close (ssl_conn);
116 push_other (HCConn *conn, HCEvent event, gpointer data)
123 while ((r = hc_conn_read (conn, buffer, sizeof (buffer))) > 0)
124 hc_conn_write (data, buffer, r);
127 hc_conn_close (conn);
128 hc_conn_close (data);
134 ssl_connected (HCConn *client_conn, HCEvent event, gpointer data)
136 struct pop_address *address = data;
138 if (event != HC_EVENT_CONNECT)
140 g_debug ("Did not get connect event when trying to handshake:"
142 hc_conn_close (client_conn);
145 server_conn = server_conn_new (address->server, address->port,
147 if (server_conn == NULL)
149 g_debug ("Failure to create connection to server.");
150 hc_conn_close (client_conn);
153 hc_conn_set_callback (client_conn, push_other, server_conn);
154 hc_conn_set_callback (server_conn, push_other, client_conn);
158 new_client (int fd, struct sockaddr *addr, socklen_t saddr, gpointer data)
161 struct pop_address *address = data;
164 g_critical ("Server has received an error event.");
168 /* FIXME: Should be independent of address type. */
169 g_message ("Received connection from %s.",
170 inet_ntoa (((struct sockaddr_in *) addr)->sin_addr));
172 client_conn = client_conn_new (fd);
173 if (client_conn == NULL)
178 hc_conn_set_callback (client_conn, ssl_connected, address);
182 static gchar *configfile;
183 static gboolean foreground;
185 static GOptionEntry opt_entries[] =
187 { "config-file", 'c', 0, G_OPTION_ARG_FILENAME, &configfile,
188 "Configuration file location", "file" },
189 { "foreground", 'f', 0, G_OPTION_ARG_NONE, &foreground,
190 "Run in foreground", 0 },
194 int main (int argc, char **argv)
197 GOptionContext *opt_ctx;
203 gchar *server_address;
209 struct pop_address pop_address;
211 signal (SIGPIPE, SIG_IGN);
213 gnutls_global_init ();
215 configfile = CONFFILE;
216 opt_ctx = g_option_context_new ("");
217 g_option_context_add_main_entries (opt_ctx, opt_entries, NULL);
220 if (!g_option_context_parse (opt_ctx, &argc, &argv, &error))
222 g_critical ("Could not parse command line options: %s.",
224 g_error_free (error);
227 g_option_context_free (opt_ctx);
229 keyfile = g_key_file_new ();
232 if (g_key_file_load_from_file (keyfile, configfile,
233 G_KEY_FILE_NONE, &error) == FALSE)
235 g_critical ("Could not load configuration file %s: %s.",
236 configfile, error->message);
237 g_error_free (error);
242 certfile = g_key_file_get_string (keyfile, "global", "certfile",
244 if (certfile == NULL && error != NULL)
246 g_critical ("No certification file specified: %s.",
248 g_error_free (error);
252 ssl_keyfile = g_key_file_get_string (keyfile, "global", "keyfile",
254 if (ssl_keyfile == NULL && error != NULL)
256 ssl_keyfile = g_strdup (certfile);
257 g_error_free (error);
262 conf_address = g_key_file_get_string (keyfile, "global", "address",
264 if (conf_address == NULL && error != NULL)
266 conf_address = g_strdup ("0.0.0.0");
267 g_error_free (error);
270 port = g_key_file_get_string (keyfile, "global", "port", &error);
271 if (port == NULL && error != NULL)
273 port = g_strdup ("110");
274 g_error_free (error);
277 server_address = g_key_file_get_string (keyfile, "global", "server",
279 if (server_address == NULL && error != NULL)
281 server_address = g_strdup ("127.0.0.1");
282 g_error_free (error);
285 server_port = g_key_file_get_string (keyfile, "global", "server_port",
287 if (server_port == NULL && error != NULL)
289 server_port = g_strdup ("995");
290 g_error_free (error);
293 server_ssl = g_key_file_get_boolean (keyfile, "global", "server_ssl",
295 if (server_ssl == 0 && error != NULL)
298 g_error_free (error);
302 policy = g_key_file_get_string (keyfile, "global", "policy",
304 if (policy == NULL && error != NULL)
306 policy = g_strdup ("deny");
307 g_error_free (error);
310 if (!strcmp (policy, "allow"))
311 ACCESS_DEFAULT = ACCESS_ALLOW;
315 pop_address.server = server_address;
316 pop_address.port = server_port;
317 pop_address.ssl = server_ssl;
319 server_fd = hc_tcp_server (port);
322 g_critical ("Could not create server.");
325 hc_server_add_watch (server_fd, new_client, &pop_address);
329 g_message ("Listening at %s:%s.", conf_address, port);
330 if (ACCESS_DEFAULT == ACCESS_ALLOW)
331 g_message ("Authorizing users by default.");
336 g_free (conf_address);
339 hc_conn_ssl_server_init_credentials (certfile, ssl_keyfile);
342 g_free (ssl_keyfile);
344 g_main_loop_run (g_main_loop_new (g_main_context_default (), TRUE));
346 gnutls_global_deinit ();
348 g_free (server_address);
349 g_free (server_port);