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 char* ip)
47 : server(), socket_handler(0,tcp_s)
52 socket_server::socket_server(const char* path, mode_t filemode, const char* user, const char* 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 struct passwd *socket_user = getpwnam (user);
95 if (socket_user == NULL)
97 string err="error getting socket user: ";
100 throw t2n_server_error(err);
103 struct group *socket_group = getgrnam (group);
104 if (socket_group == NULL)
106 string err="error getting socket group: ";
107 err+=strerror(errno);
109 throw t2n_server_error(err);
112 if (chown (unix_name.sun_path, socket_user->pw_uid, socket_group->gr_gid) != 0)
114 string err="error changing socket ownership: ";
115 err+=strerror(errno);
117 throw t2n_server_error(err);
120 if (listen (sock, 5) < 0)
122 string err="error listening to socket: ";
123 err+=strerror(errno);
125 throw t2n_server_error(err);
128 /* clear & insert server sock into the fd_tab to prepare select */
129 FD_ZERO(&connection_set);
130 FD_SET (sock, &connection_set);
133 socket_server::~socket_server()
135 if (get_type()==unix_s)
136 unlink(unix_path.c_str());
139 void socket_server::new_connection()
141 struct sockaddr_un clientname;
143 unsigned int size = sizeof (clientname);
144 int newsock = accept (sock,(struct sockaddr *) &clientname,&size);
149 log(error, "accept error (EAGAIN): no connection waiting");
154 string err="error accepting connection: ";
155 err+=strerror(errno);
157 throw t2n_server_error(err);
160 FD_SET (newsock, &connection_set);
162 socket_server_connection *nc=new socket_server_connection(newsock, get_type(), get_default_timeout());
163 nc->set_socket_options(newsock);
170 void socket_server::fill_buffer(long long usec_timeout)
172 fd_set used_fdset=connection_set;
176 struct timeval *timeout_ptr;
178 if (usec_timeout == -1)
184 // timeout von long long usec in int sec + int usec umrechnen
185 tval.tv_sec = usec_timeout / 1000000;
186 tval.tv_usec = usec_timeout % 1000000;
189 int ret=select (FD_SETSIZE, &used_fdset, NULL, NULL, timeout_ptr);
195 // select interrupted by signal
200 string err="select error: ";
201 err+=strerror(errno);
203 throw t2n_server_error(err);
209 // we have data pending
211 // check for new connection
212 if (FD_ISSET (sock, &used_fdset))
217 // check all connections for pending data
218 fill_connection_buffers();
224 void socket_server::fill_connection_buffers()
226 std::map<unsigned int, server_connection*>::iterator ie=connections.end();
227 for(std::map<unsigned int, server_connection*>::iterator i=connections.begin(); i != ie; i++)
228 if (!i->second->is_closed())
229 i->second->fill_buffer();
232 void socket_server::remove_connection_socket(int sock)
234 FD_CLR(sock, &connection_set);
237 void socket_server_connection::close()
241 socket_handler::close();
242 server_connection::close();
247 dynamic_cast<socket_server*>(my_server)->remove_connection_socket(sock);