2 Copyright (C) 2000, 2001, 2002 Kern Sibbald and John Walker
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License as
6 published by the Free Software Foundation; either version 2 of
7 the License, or (at your option) any later version.
9 This program 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 GNU
12 General Public License for more details.
14 You should have received a copy of the GNU General Public
15 License along with this program; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
21 * Originally written by Kern Sibbald for inclusion in apcupsd,
22 * but heavily modified for Bacula
28 #include <netinet/in.h>
29 #include <sys/socket.h>
30 #include <arpa/inet.h>
32 #ifdef HAVE_ARPA_NAMESER_H
33 #include <arpa/nameser.h>
41 int allow_severity = LOG_NOTICE;
42 int deny_severity = LOG_WARNING;
43 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
46 /* Become Threaded Network Server */
48 bnet_thread_server(char *bind_addr, int port, int max_clients, workq_t *client_wq,
49 void handle_client_request(void *bsock))
51 int newsockfd, sockfd, stat;
53 struct sockaddr_in cli_addr; /* client's address */
54 struct sockaddr_in serv_addr; /* our address */
55 struct in_addr bind_ip; /* address to bind to */
57 fd_set ready, sockset;
61 struct request_info request;
67 for (tlog=0; (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0; tlog -= 10 ) {
70 Emsg1(M_ERROR, 0, _("Cannot open stream socket: %s. Retrying ...\n"), strerror(errno));
78 if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &turnon, sizeof(turnon)) < 0) {
79 Emsg1(M_WARNING, 0, _("Cannot set SO_REUSEADDR on socket: %s\n"), strerror(errno));
83 * Bind our local address so that the client can send to us.
85 bind_ip.s_addr = htonl(INADDR_ANY);
86 if (bind_addr && bind_addr[0]) {
88 if (inet_pton(AF_INET, bind_addr, &bind_ip) <= 0) {
90 if (inet_aton(bind_addr, &bind_ip) <= 0) {
92 Emsg1(M_WARNING, 0, _("Invalid bind address: %s, using INADDR_ANY\n"),
94 bind_ip.s_addr = htonl(INADDR_ANY);
97 memset((char *) &serv_addr, 0, sizeof(serv_addr));
98 serv_addr.sin_family = AF_INET;
99 serv_addr.sin_addr.s_addr = bind_ip.s_addr;
100 serv_addr.sin_port = htons(port);
102 int tmax = 30 * (60 / 5); /* wait 30 minutes max */
103 for (tlog=0; bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0; tlog -= 5 ) {
105 tlog = 2*60; /* Complain every 2 minutes */
106 Emsg2(M_WARNING, 0, _("Cannot bind port %d: %s. Retrying ...\n"), port, strerror(errno));
110 Emsg2(M_ABORT, 0, _("Cannot bind port %d: %s.\n"), port, strerror(errno));
113 listen(sockfd, 5); /* tell system we are ready */
116 FD_SET(sockfd, &sockset);
118 /* Start work queue thread */
119 if ((stat = workq_init(client_wq, max_clients, handle_client_request)) != 0) {
120 Emsg1(M_ABORT, 0, _("Could not init client queue: ERR=%s\n"), strerror(stat));
125 * Wait for a connection from a client process.
128 if ((stat = select(sockfd+1, &ready, NULL, NULL, NULL)) < 0) {
129 if (errno == EINTR || errno == EAGAIN) {
134 Emsg1(M_FATAL, 0, _("Error in select: %s\n"), strerror(errno));
137 clilen = sizeof(cli_addr);
138 newsockfd = accept(sockfd, (struct sockaddr *)&cli_addr, &clilen);
141 P(mutex); /* hosts_access is not thread safe */
142 request_init(&request, RQ_DAEMON, my_name, RQ_FILE, newsockfd, 0);
144 if (!hosts_access(&request)) {
146 Jmsg2(NULL, M_WARNING, 0, _("Connection from %s:%d refused by hosts.access"),
147 inet_ntoa(cli_addr.sin_addr), ntohs(cli_addr.sin_port));
155 * Receive notification when connection dies.
157 if (setsockopt(newsockfd, SOL_SOCKET, SO_KEEPALIVE, &turnon, sizeof(turnon)) < 0) {
158 Emsg1(M_WARNING, 0, _("Cannot set SO_KEEPALIVE on socket: %s\n") , strerror(errno));
161 /* see who client is. i.e. who connected to us. */
162 caller = inet_ntoa(cli_addr.sin_addr);
163 if (caller == NULL) {
164 caller = "unknown client";
167 /* Queue client to be served */
168 if ((stat = workq_add(client_wq,
169 (void *)init_bsock(NULL, newsockfd, "client", caller, port), NULL, 0)) != 0) {
170 Jmsg1(NULL, M_ABORT, 0, _("Could not add job to client queue: ERR=%s\n"), strerror(stat));
178 * Bind an address so that we may accept connections
185 struct sockaddr_in serv_addr; /* our address */
192 for (tlog=0; (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0; tlog -= 10 ) {
195 Emsg1(M_ERROR, 0, _("Cannot open stream socket: %s\n"), strerror(errno));
203 if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &turnon, sizeof(turnon)) < 0) {
204 Emsg1(M_WARNING, 0, _("Cannot set SO_REUSEADDR on socket: %s\n") , strerror(errno));
208 * Bind our local address so that the client can send to us.
210 bzero((char *) &serv_addr, sizeof(serv_addr));
211 serv_addr.sin_family = AF_INET;
212 serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
213 serv_addr.sin_port = htons(port);
215 for (tlog=0; bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0; tlog -= 5 ) {
218 Emsg2(M_WARNING, 0, _("Cannot bind port %d: %s: retrying ...\n"), port, strerror(errno));
222 listen(sockfd, 1); /* tell system we are ready */
223 return init_bsock(NULL, sockfd, _("Server socket"), _("client"), port);
227 * Accept a single connection
230 bnet_accept(BSOCK *bsock, char *who)
232 fd_set ready, sockset;
233 int newsockfd, stat, len;
235 struct sockaddr_in cli_addr; /* client's address */
240 struct request_info request;
244 * Wait for a connection from the client process.
247 FD_SET(bsock->fd, &sockset);
251 * Wait for a connection from a client process.
254 if ((stat = select(bsock->fd+1, &ready, NULL, NULL, NULL)) < 0) {
255 if (errno == EINTR || errno == EAGAIN) {
259 Emsg1(M_FATAL, 0, _("Error in select: %s\n"), strerror(errno));
263 clilen = sizeof(cli_addr);
264 newsockfd = accept(bsock->fd, (struct sockaddr *)&cli_addr, &clilen);
270 request_init(&request, RQ_DAEMON, my_name, RQ_FILE, newsockfd, 0);
272 if (!hosts_access(&request)) {
274 Emsg2(M_WARNING, 0, _("Connection from %s:%d refused by hosts.access"),
275 inet_ntoa(cli_addr.sin_addr), ntohs(cli_addr.sin_port));
283 * Receive notification when connection dies.
285 if (setsockopt(newsockfd, SOL_SOCKET, SO_KEEPALIVE, &turnon, sizeof(turnon)) < 0) {
286 Emsg1(M_WARNING, 0, _("Cannot set SO_KEEPALIVE on socket: %s\n"), strerror(errno));
289 /* see who client is. I.e. who connected to us.
290 * return it in the input message buffer.
292 if ((caller = inet_ntoa(cli_addr.sin_addr)) != NULL) {
293 pm_strcpy(&bsock->msg, caller);
297 bsock->msglen = strlen(bsock->msg);
300 Emsg2(M_FATAL, 0, _("Socket accept error for %s. ERR=%s\n"), who,
304 if (caller == NULL) {
307 len = strlen(caller) + strlen(who) + 3;
308 buf = (char *) malloc(len);
312 bs = init_bsock(NULL, newsockfd, "client", buf, bsock->port);
314 return bs; /* return new BSOCK */