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>
35 int allow_severity = LOG_NOTICE;
36 int deny_severity = LOG_WARNING;
37 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
40 /* Become Threaded Network Server */
42 bnet_thread_server(char *bind_addr, int port, int max_clients, workq_t *client_wq,
43 void handle_client_request(void *bsock))
45 int newsockfd, sockfd, stat;
47 struct sockaddr_in cli_addr; /* client's address */
48 struct sockaddr_in serv_addr; /* our address */
49 struct in_addr bind_ip; /* address to bind to */
51 fd_set ready, sockset;
55 struct request_info request;
61 for (tlog=0; (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0; tlog -= 10 ) {
64 Emsg1(M_ERROR, 0, _("Cannot open stream socket: %s. Retrying ...\n"), strerror(errno));
72 if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &turnon, sizeof(turnon)) < 0) {
73 Emsg1(M_WARNING, 0, _("Cannot set SO_REUSEADDR on socket: %s\n"), strerror(errno));
77 * Bind our local address so that the client can send to us.
79 bind_ip.s_addr = htonl(INADDR_ANY);
80 if (bind_addr && bind_addr[0]) {
81 if (inet_pton(AF_INET, bind_addr, &bind_ip) <= 0) {
82 Emsg1(M_WARNING, 0, _("Invalid bind address: %s, using INADDR_ANY\n"),
84 bind_ip.s_addr = htonl(INADDR_ANY);
87 memset((char *) &serv_addr, 0, sizeof(serv_addr));
88 serv_addr.sin_family = AF_INET;
89 serv_addr.sin_addr.s_addr = bind_ip.s_addr;
90 serv_addr.sin_port = htons(port);
92 int tmax = 30 * (60 / 5); /* wait 30 minutes max */
93 for (tlog=0; bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0; tlog -= 5 ) {
95 tlog = 2*60; /* Complain every 2 minutes */
96 Emsg2(M_WARNING, 0, _("Cannot bind port %d: %s. Retrying ...\n"), port, strerror(errno));
100 Emsg2(M_ABORT, 0, _("Cannot bind port %d: %s.\n"), port, strerror(errno));
103 listen(sockfd, 5); /* tell system we are ready */
106 FD_SET(sockfd, &sockset);
108 /* Start work queue thread */
109 if ((stat = workq_init(client_wq, max_clients, handle_client_request)) != 0) {
110 Emsg1(M_ABORT, 0, _("Could not init client queue: ERR=%s\n"), strerror(stat));
115 * Wait for a connection from a client process.
118 if ((stat = select(sockfd+1, &ready, NULL, NULL, NULL)) < 0) {
119 if (errno == EINTR || errno == EAGAIN) {
124 Emsg1(M_FATAL, 0, _("Error in select: %s\n"), strerror(errno));
127 clilen = sizeof(cli_addr);
128 newsockfd = accept(sockfd, (struct sockaddr *)&cli_addr, &clilen);
131 P(mutex); /* hosts_access is not thread safe */
132 request_init(&request, RQ_DAEMON, my_name, RQ_FILE, newsockfd, 0);
134 if (!hosts_access(&request)) {
136 Jmsg2(NULL, M_WARNING, 0, _("Connection from %s:%d refused by hosts.access"),
137 inet_ntoa(cli_addr.sin_addr), ntohs(cli_addr.sin_port));
145 * Receive notification when connection dies.
147 if (setsockopt(newsockfd, SOL_SOCKET, SO_KEEPALIVE, &turnon, sizeof(turnon)) < 0) {
148 Emsg1(M_WARNING, 0, _("Cannot set SO_KEEPALIVE on socket: %s\n") , strerror(errno));
151 /* see who client is. i.e. who connected to us. */
152 caller = inet_ntoa(cli_addr.sin_addr);
153 if (caller == NULL) {
154 caller = "unknown client";
157 /* Queue client to be served */
158 if ((stat = workq_add(client_wq,
159 (void *)init_bsock(NULL, newsockfd, "client", caller, port))) != 0) {
160 Jmsg1(NULL, M_ABORT, 0, _("Could not add job to client queue: ERR=%s\n"), strerror(stat));
168 * Bind an address so that we may accept connections
175 struct sockaddr_in serv_addr; /* our address */
182 for (tlog=0; (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0; tlog -= 10 ) {
185 Emsg1(M_ERROR, 0, _("Cannot open stream socket: %s\n"), strerror(errno));
193 if (setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &turnon, sizeof(turnon)) < 0) {
194 Emsg1(M_WARNING, 0, _("Cannot set SO_REUSEADDR on socket: %s\n") , strerror(errno));
198 * Bind our local address so that the client can send to us.
200 bzero((char *) &serv_addr, sizeof(serv_addr));
201 serv_addr.sin_family = AF_INET;
202 serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
203 serv_addr.sin_port = htons(port);
205 for (tlog=0; bind(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr)) < 0; tlog -= 5 ) {
208 Emsg2(M_WARNING, 0, _("Cannot bind port %d: %s: retrying ...\n"), port, strerror(errno));
212 listen(sockfd, 1); /* tell system we are ready */
213 return init_bsock(NULL, sockfd, _("Server socket"), _("client"), port);
217 * Accept a single connection
220 bnet_accept(BSOCK *bsock, char *who)
222 fd_set ready, sockset;
223 int newsockfd, stat, len;
225 struct sockaddr_in cli_addr; /* client's address */
230 struct request_info request;
234 * Wait for a connection from the client process.
237 FD_SET(bsock->fd, &sockset);
241 * Wait for a connection from a client process.
244 if ((stat = select(bsock->fd+1, &ready, NULL, NULL, NULL)) < 0) {
245 if (errno == EINTR || errno == EAGAIN) {
249 Emsg1(M_FATAL, 0, _("Error in select: %s\n"), strerror(errno));
253 clilen = sizeof(cli_addr);
254 newsockfd = accept(bsock->fd, (struct sockaddr *)&cli_addr, &clilen);
260 request_init(&request, RQ_DAEMON, my_name, RQ_FILE, newsockfd, 0);
262 if (!hosts_access(&request)) {
264 Emsg2(M_WARNING, 0, _("Connection from %s:%d refused by hosts.access"),
265 inet_ntoa(cli_addr.sin_addr), ntohs(cli_addr.sin_port));
273 * Receive notification when connection dies.
275 if (setsockopt(newsockfd, SOL_SOCKET, SO_KEEPALIVE, &turnon, sizeof(turnon)) < 0) {
276 Emsg1(M_WARNING, 0, _("Cannot set SO_KEEPALIVE on socket: %s\n"), strerror(errno));
279 /* see who client is. I.e. who connected to us.
280 * return it in the input message buffer.
282 if ((caller = inet_ntoa(cli_addr.sin_addr)) != NULL) {
283 strcpy(bsock->msg, caller);
287 bsock->msglen = strlen(bsock->msg);
290 Emsg2(M_FATAL, 0, _("Socket accept error for %s. ERR=%s\n"), who,
294 if (caller == NULL) {
297 len = strlen(caller) + strlen(who) + 3;
298 buf = (char *) malloc(len);
302 bs = init_bsock(NULL, newsockfd, "client", buf, bsock->port);
304 return bs; /* return new BSOCK */