2 Bacula® - The Network Backup Solution
4 Copyright (C) 2000-2008 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version three of the GNU Affero General Public
10 License as published by the Free Software Foundation and included
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU Affero General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of Kern Sibbald.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
29 * Originally written by Kern Sibbald for inclusion in apcupsd,
30 * but heavily modified for Bacula
36 #include <netinet/in.h>
37 #include <sys/socket.h>
39 #include <arpa/inet.h>
41 #ifdef HAVE_ARPA_NAMESER_H
42 #include <arpa/nameser.h>
49 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
53 int allow_severity = LOG_NOTICE;
54 int deny_severity = LOG_WARNING;
57 static bool quit = false;
59 void bnet_stop_thread_server(pthread_t tid)
62 if (!pthread_equal(tid, pthread_self())) {
63 pthread_kill(tid, TIMEOUT_SIGNAL);
68 Become Threaded Network Server
69 This function is able to handle multiple server ips in
70 ipv4 and ipv6 style. The Addresse are give in a comma
71 seperated string in bind_addr
72 In the moment it is inpossible to bind different ports.
75 bnet_thread_server(dlist *addrs, int max_clients, workq_t *client_wq,
76 void *handle_client_request(void *bsock))
80 struct sockaddr cli_addr; /* client's address */
84 struct request_info request;
88 dlink link; /* this MUST be the first item */
95 char allbuf[256 * 10];
96 Dmsg1(100, "Addresses %s\n", build_addresses_str(addrs, allbuf, sizeof(allbuf)));
98 foreach_dlist(p, addrs) {
99 /* Allocate on stack from -- no need to free */
100 fd_ptr = (s_sockfd *)alloca(sizeof(s_sockfd));
101 fd_ptr->port = p->get_port_net_order();
105 for (tlog= 60; (fd_ptr->fd=socket(p->get_family(), SOCK_STREAM, 0)) < 0; tlog -= 10) {
109 Emsg3(M_ABORT, 0, _("Cannot open stream socket. ERR=%s. Current %s All %s\n"),
111 p->build_address_str(curbuf, sizeof(curbuf)),
112 build_addresses_str(addrs, allbuf, sizeof(allbuf)));
119 if (setsockopt(fd_ptr->fd, SOL_SOCKET, SO_REUSEADDR, (sockopt_val_t)&turnon,
120 sizeof(turnon)) < 0) {
122 Emsg1(M_WARNING, 0, _("Cannot set SO_REUSEADDR on socket: %s\n"),
126 int tmax = 30 * (60 / 5); /* wait 30 minutes max */
127 for (tlog = 0; bind(fd_ptr->fd, p->get_sockaddr(), p->get_sockaddr_len()) < 0; tlog -= 5) {
130 tlog = 2 * 60; /* Complain every 2 minutes */
131 Emsg2(M_WARNING, 0, _("Cannot bind port %d: ERR=%s: Retrying ...\n"),
132 ntohs(fd_ptr->port), be.bstrerror());
136 Emsg2(M_ABORT, 0, _("Cannot bind port %d: ERR=%s.\n"), ntohs(fd_ptr->port),
140 listen(fd_ptr->fd, 50); /* tell system we are ready */
141 sockfds.append(fd_ptr);
143 /* Start work queue thread */
144 if ((stat = workq_init(client_wq, max_clients, handle_client_request)) != 0) {
147 Emsg1(M_ABORT, 0, _("Could not init client queue: ERR=%s\n"), be.bstrerror());
150 * Wait for a connection from the client process.
153 unsigned int maxfd = 0;
156 foreach_dlist(fd_ptr, &sockfds) {
157 FD_SET((unsigned)fd_ptr->fd, &sockset);
158 maxfd = maxfd > (unsigned)fd_ptr->fd ? maxfd : fd_ptr->fd;
161 if ((stat = select(maxfd + 1, &sockset, NULL, NULL, NULL)) < 0) {
162 berrno be; /* capture errno */
163 if (errno == EINTR) {
166 Emsg1(M_FATAL, 0, _("Error in select: %s\n"), be.bstrerror());
170 foreach_dlist(fd_ptr, &sockfds) {
171 if (FD_ISSET(fd_ptr->fd, &sockset)) {
172 /* Got a connection, now accept it. */
174 clilen = sizeof(cli_addr);
175 newsockfd = accept(fd_ptr->fd, &cli_addr, &clilen);
176 } while (newsockfd < 0 && errno == EINTR);
181 P(mutex); /* hosts_access is not thread safe */
182 request_init(&request, RQ_DAEMON, my_name, RQ_FILE, newsockfd, 0);
184 if (!hosts_access(&request)) {
186 Jmsg2(NULL, M_SECURITY, 0,
187 _("Connection from %s:%d refused by hosts.access\n"),
188 sockaddr_to_ascii(&cli_addr, buf, sizeof(buf)),
189 sockaddr_get_port(&cli_addr));
197 * Receive notification when connection dies.
199 if (setsockopt(newsockfd, SOL_SOCKET, SO_KEEPALIVE, (sockopt_val_t)&turnon,
200 sizeof(turnon)) < 0) {
202 Emsg1(M_WARNING, 0, _("Cannot set SO_KEEPALIVE on socket: %s\n"),
206 /* see who client is. i.e. who connected to us. */
208 sockaddr_to_ascii(&cli_addr, buf, sizeof(buf));
211 bs = init_bsock(NULL, newsockfd, "client", buf, fd_ptr->port, &cli_addr);
213 Jmsg0(NULL, M_ABORT, 0, _("Could not create client BSOCK.\n"));
216 /* Queue client to be served */
217 if ((stat = workq_add(client_wq, (void *)bs, NULL, 0)) != 0) {
220 Jmsg1(NULL, M_ABORT, 0, _("Could not add job to client queue: ERR=%s\n"),
227 /* Cleanup open files and pointers to them */
228 while ((fd_ptr = (s_sockfd *)sockfds.first())) {
230 sockfds.remove(fd_ptr); /* don't free() item it is on stack */
233 /* Stop work queue thread */
234 if ((stat = workq_destroy(client_wq)) != 0) {
237 Emsg1(M_FATAL, 0, _("Could not destroy client queue: ERR=%s\n"),