1 /***************************************************************************
2 * Copyright (C) 2006 by Gerd v. Egidy *
5 * This library is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU Lesser General Public License version *
7 * 2.1 as published by the Free Software Foundation. *
9 * This library is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU Lesser General Public License for more details. *
14 * You should have received a copy of the GNU Lesser General Public *
15 * License along with this program; if not, write to the *
16 * Free Software Foundation, Inc., *
17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
18 ***************************************************************************/
24 #include <sys/types.h>
25 #include <sys/socket.h>
28 #include <arpa/inet.h>
29 #include <netinet/in.h>
38 #include "socket_server.hxx"
39 #include "t2n_exception.hxx"
46 socket_server::socket_server(int port, const std::string& ip)
47 : server(), socket_handler(0,tcp_s)
52 socket_server::socket_server(const std::string& path, mode_t filemode, const std::string& user, const std::string& group)
53 : server(), socket_handler(0,unix_s)
57 /* Create the socket. */
58 sock = socket (PF_UNIX, SOCK_STREAM, 0);
61 string err="error opening socket: ";
64 throw t2n_server_error(err);
67 set_socket_options(sock);
69 /* Give the socket a name. */
70 struct sockaddr_un unix_name;
71 unix_name.sun_family = AF_UNIX;
72 strncpy (unix_name.sun_path, unix_path.c_str(),sizeof(unix_name.sun_path));
74 /* just to make sure there is no other socket file */
75 unlink (unix_name.sun_path);
77 if (bind (sock, (struct sockaddr *) &unix_name, sizeof (unix_name)) < 0)
79 string err="error binding socket: ";
82 throw t2n_server_error(err);
85 /* change permissions */
86 if (chmod (unix_name.sun_path, filemode) != 0)
88 string err="error changing permission: ";
91 throw t2n_server_error(err);
94 if (!user.empty() && !group.empty())
96 // TODO maybe use current user/group if one of them is empty
98 struct passwd *socket_user = getpwnam (user.c_str());
99 if (socket_user == NULL)
101 string err="error getting socket user: ";
102 err+=strerror(errno);
104 throw t2n_server_error(err);
107 struct group *socket_group = getgrnam (group.c_str());
108 if (socket_group == NULL)
110 string err="error getting socket group: ";
111 err+=strerror(errno);
113 throw t2n_server_error(err);
116 if (chown (unix_name.sun_path, socket_user->pw_uid, socket_group->gr_gid) != 0)
118 string err="error changing socket ownership: ";
119 err+=strerror(errno);
121 throw t2n_server_error(err);
125 if (listen (sock, 5) < 0)
127 string err="error listening to socket: ";
128 err+=strerror(errno);
130 throw t2n_server_error(err);
133 /* clear & insert server sock into the fd_tab to prepare select */
134 FD_ZERO(&connection_set);
135 FD_SET (sock, &connection_set);
138 socket_server::~socket_server()
140 socket_handler::close();
142 if (get_type()==unix_s)
143 unlink(unix_path.c_str());
146 void socket_server::new_connection()
148 struct sockaddr_un clientname;
150 unsigned int size = sizeof (clientname);
151 int newsock = accept (sock,(struct sockaddr *) &clientname,&size);
156 log(error, "accept error (EAGAIN): no connection waiting");
161 string err="error accepting connection: ";
162 err+=strerror(errno);
164 throw t2n_server_error(err);
167 FD_SET (newsock, &connection_set);
169 socket_server_connection *nc=new socket_server_connection(newsock, get_type(), get_default_timeout());
170 nc->set_socket_options(newsock);
177 void socket_server::fill_buffer(long long usec_timeout)
179 fd_set used_fdset=connection_set;
183 struct timeval *timeout_ptr;
185 if (usec_timeout == -1)
191 // timeout von long long usec in int sec + int usec umrechnen
192 tval.tv_sec = usec_timeout / 1000000;
193 tval.tv_usec = usec_timeout % 1000000;
196 int ret=select (FD_SETSIZE, &used_fdset, NULL, NULL, timeout_ptr);
202 // select interrupted by signal
207 string err="select error: ";
208 err+=strerror(errno);
210 throw t2n_server_error(err);
216 // we have data pending
218 // check for new connection
219 if (FD_ISSET (sock, &used_fdset))
224 // check all connections for pending data
225 fill_connection_buffers();
231 void socket_server::fill_connection_buffers()
233 std::map<unsigned int, server_connection*>::iterator ie=connections.end();
234 for(std::map<unsigned int, server_connection*>::iterator i=connections.begin(); i != ie; i++)
235 if (!i->second->server_connection::is_closed())
236 i->second->fill_buffer(0);
239 void socket_server::remove_connection_socket(int sock)
241 FD_CLR(sock, &connection_set);
244 void socket_server_connection::log(log_level_values level, const char* message)
249 msg << "connection id " << get_id() << ": " << message;
250 my_server->log(level,msg.str().c_str());
254 void socket_server_connection::close()
256 if (!server_connection::is_closed())
258 socket_handler::close();
259 server_connection::close();
264 dynamic_cast<socket_server*>(my_server)->remove_connection_socket(sock);