5 * Added locking of new_conn_mutex when traversing the c[] array.
14 #include <ac/signal.h>
15 #include <ac/socket.h>
16 #include <ac/string.h>
18 #include <ac/unistd.h>
20 #include "ldapconfig.h"
23 #ifdef HAVE_SYS_FILIO_H
24 #include <sys/filio.h>
25 #elif HAVE_SYS_IOCTL_H
26 #include <sys/ioctl.h>
32 #define assert( cond )
38 int allow_severity = LOG_INFO;
39 int deny_severity = LOG_NOTICE;
40 #endif /* TCP Wrappers */
45 static volatile sig_atomic_t slapd_shutdown = 0;
47 /* a link to the slapd.conf configuration parameters */
48 extern char *slapd_pid_file;
49 extern char *slapd_args_file;
58 struct sockaddr_in addr;
64 dtblsize = sysconf( _SC_OPEN_MAX );
65 #elif HAVE_GETDTABLESIZE
66 dtblsize = getdtablesize();
72 if(dtblsize > FD_SETSIZE) {
73 dtblsize = FD_SETSIZE;
75 #endif /* !FD_SETSIZE */
77 c = (Connection *) ch_calloc( 1, dtblsize * sizeof(Connection) );
79 for ( i = 0; i < dtblsize; i++ ) {
85 lber_pvt_sb_init( &c[i].c_sb );
86 c[i].c_writewaiter = 0;
88 ldap_pvt_thread_mutex_init( &c[i].c_dnmutex );
89 ldap_pvt_thread_mutex_init( &c[i].c_opsmutex );
90 ldap_pvt_thread_mutex_init( &c[i].c_pdumutex );
91 ldap_pvt_thread_cond_init( &c[i].c_wcv );
94 if ( (tcps = socket( AF_INET, SOCK_STREAM, 0 )) == -1 ) {
95 Debug( LDAP_DEBUG_ANY, "socket() failed errno %d (%s)", errno,
96 errno > -1 && errno < sys_nerr ? sys_errlist[errno] :
102 if ( setsockopt( tcps, SOL_SOCKET, SO_REUSEADDR, (char *) &i,
103 sizeof(i) ) == -1 ) {
104 Debug( LDAP_DEBUG_ANY, "setsockopt() failed errno %d (%s)",
105 errno, errno > -1 && errno < sys_nerr ? sys_errlist[errno] :
109 (void) memset( (void *) &addr, '\0', sizeof(addr) );
110 addr.sin_family = AF_INET;
111 addr.sin_addr.s_addr = INADDR_ANY;
112 addr.sin_port = htons( (int)port );
113 if ( bind( tcps, (struct sockaddr *) &addr, sizeof(addr) ) == -1 ) {
114 Debug( LDAP_DEBUG_ANY, "bind() failed errno %d (%s)\n",
115 errno, errno > -1 && errno < sys_nerr ? sys_errlist[errno] :
120 if ( listen( tcps, 5 ) == -1 ) {
121 Debug( LDAP_DEBUG_ANY, "listen() failed errno %d (%s)",
122 errno, errno > -1 && errno < sys_nerr ? sys_errlist[errno] :
127 Debug( LDAP_DEBUG_ANY, "slapd starting\n", 0, 0, 0 );
129 if (( slapd_pid_file != NULL ) &&
130 (( fp = fopen( slapd_pid_file, "w" )) != NULL )) {
131 fprintf( fp, "%d\n", (int) getpid() );
135 if (( slapd_args_file != NULL ) &&
136 (( fp = fopen( slapd_args_file, "w" )) != NULL )) {
137 for ( i = 0; i < g_argc; i++ ) {
138 fprintf( fp, "%s ", g_argv[i] );
144 while ( !slapd_shutdown ) {
145 struct sockaddr_in from;
155 FD_ZERO( &writefds );
157 FD_SET( tcps, &readfds );
162 ldap_pvt_thread_mutex_lock( &active_threads_mutex );
163 Debug( LDAP_DEBUG_CONNS,
164 "listening for connections on %d, activity on:",
169 ldap_pvt_thread_mutex_lock( &new_conn_mutex );
170 for ( i = 0; i < dtblsize; i++ ) {
171 if ( lber_pvt_sb_in_use( &c[i].c_sb )) {
172 FD_SET( lber_pvt_sb_get_desc(&c[i].c_sb),
174 if (lber_pvt_sb_data_ready(&c[i].c_sb))
176 if ( c[i].c_writewaiter ) {
177 FD_SET( lber_pvt_sb_get_desc(&c[i].c_sb),
180 Debug( LDAP_DEBUG_CONNS, " %dr%s", i,
181 c[i].c_writewaiter ? "w" : "", 0 );
184 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
185 ldap_pvt_thread_mutex_unlock( &new_conn_mutex );
187 Debug( LDAP_DEBUG_CONNS, "before select active_threads %d\n",
188 active_threads, 0, 0 );
189 #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
190 tvp = (data_ready) ? &zero : NULL;
192 tvp = (active_threads || data_ready) ? &zero : NULL;
194 ldap_pvt_thread_mutex_unlock( &active_threads_mutex );
196 switch ( i = select( dtblsize, &readfds, &writefds, 0, tvp ) ) {
197 case -1: /* failure - try again */
198 Debug( LDAP_DEBUG_CONNS,
199 "select failed errno %d (%s)\n",
200 errno, errno > -1 && errno < sys_nerr ?
201 sys_errlist[errno] : "unknown", 0 );
204 case 0: /* timeout - let threads run */
205 Debug( LDAP_DEBUG_CONNS, "select timeout - yielding\n",
208 ldap_pvt_thread_yield();
211 default: /* something happened - deal with it */
212 Debug( LDAP_DEBUG_CONNS, "select activity on %d descriptors\n", i, 0, 0 );
215 ldap_pvt_thread_mutex_lock( ¤ttime_mutex );
216 time( ¤ttime );
217 ldap_pvt_thread_mutex_unlock( ¤ttime_mutex );
220 ldap_pvt_thread_mutex_lock( &new_conn_mutex );
221 if ( FD_ISSET( tcps, &readfds ) ) {
223 if ( (ns = accept( tcps, (struct sockaddr *) &from,
225 Debug( LDAP_DEBUG_ANY,
226 "accept() failed errno %d (%s)", errno,
227 errno > -1 && errno < sys_nerr ?
228 sys_errlist[errno] : "unknown", 0 );
229 ldap_pvt_thread_mutex_unlock( &new_conn_mutex );
233 /* make sure descriptor number isn't too great */
234 if ( ns >= dtblsize ) {
235 Debug( LDAP_DEBUG_ANY,
236 "new connection on %d beyond descriptor table size %d\n",
239 ldap_pvt_thread_mutex_unlock( &new_conn_mutex );
243 lber_pvt_sb_set_desc( &c[ns].c_sb, ns );
244 lber_pvt_sb_set_io( &c[ns].c_sb, &lber_pvt_sb_io_tcp, NULL );
246 if (lber_pvt_sb_set_nonblock( &c[ns].c_sb, 1)<0) {
247 Debug( LDAP_DEBUG_ANY,
248 "FIONBIO ioctl on %d failed\n", ns, 0, 0 );
251 Debug( LDAP_DEBUG_CONNS, "new connection on %d\n", ns,
256 if ( getpeername( ns, (struct sockaddr *) &from, &len )
259 client_addr = inet_ntoa( from.sin_addr );
261 #if defined(SLAPD_RLOOKUPS) || defined(HAVE_TCPD)
262 hp = gethostbyaddr( (char *)
263 &(from.sin_addr.s_addr),
264 sizeof(from.sin_addr.s_addr), AF_INET );
267 client_name = hp->h_name;
269 /* normalize the domain */
270 for ( s = client_name; *s; s++ ) {
271 *s = TOLOWER( (unsigned char) *s );
287 if(!hosts_ctl("slapd",
288 client_name != NULL ? client_name : STRING_UNKNOWN,
289 client_addr != NULL ? client_addr : STRING_UNKNOWN,
293 Statslog( LDAP_DEBUG_ANY,
294 "fd=%d connection from %s (%s) denied.\n",
296 client_name == NULL ? "unknown" : client_name,
297 client_addr == NULL ? "unknown" : client_addr,
300 lber_pvt_sb_close( &c[ns].c_sb );
301 lber_pvt_sb_destroy( &c[ns].c_sb );
302 ldap_pvt_thread_mutex_unlock( &new_conn_mutex );
305 #endif /* HAVE_TCPD */
308 ldap_pvt_thread_mutex_lock( &ops_mutex );
309 c[ns].c_connid = num_conns++;
310 ldap_pvt_thread_mutex_unlock( &ops_mutex );
312 Statslog( LDAP_DEBUG_STATS,
313 "conn=%d fd=%d connection from %s (%s) accepted.\n",
315 client_name == NULL ? "unknown" : client_name,
316 client_addr == NULL ? "unknown" : client_addr,
319 if ( c[ns].c_addr != NULL ) {
320 free( c[ns].c_addr );
322 c[ns].c_addr = ch_strdup( client_addr );
324 if ( c[ns].c_domain != NULL ) {
325 free( c[ns].c_domain );
328 c[ns].c_domain = ch_strdup( client_name == NULL
329 ? "" : client_name );
331 ldap_pvt_thread_mutex_lock( &c[ns].c_dnmutex );
332 if ( c[ns].c_dn != NULL ) {
336 if ( c[ns].c_cdn != NULL ) {
340 ldap_pvt_thread_mutex_unlock( &c[ns].c_dnmutex );
341 c[ns].c_starttime = currenttime;
342 c[ns].c_opsinitiated = 0;
343 c[ns].c_opscompleted = 0;
345 ldap_pvt_thread_mutex_unlock( &new_conn_mutex );
347 Debug( LDAP_DEBUG_CONNS, "activity on:", 0, 0, 0 );
348 for ( i = 0; i < dtblsize; i++ ) {
351 r = FD_ISSET( i, &readfds );
352 w = FD_ISSET( i, &writefds );
353 if ( i != tcps && (r || w) ) {
354 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
355 r ? "r" : "", w ? "w" : "" );
358 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
360 for ( i = 0; i < dtblsize; i++ ) {
361 if ( i == tcps || (! FD_ISSET( i, &readfds ) &&
362 ! FD_ISSET( i, &writefds )) ) {
366 if ( FD_ISSET( i, &writefds ) ) {
367 Debug( LDAP_DEBUG_CONNS,
368 "signaling write waiter on %d\n", i, 0, 0 );
370 ldap_pvt_thread_mutex_lock( &active_threads_mutex );
372 c[i].c_writewaiter = 0;
373 ldap_pvt_thread_cond_signal( &c[i].c_wcv );
374 ldap_pvt_thread_mutex_unlock( &active_threads_mutex );
377 if ( FD_ISSET( i, &readfds ) ||
378 lber_pvt_sb_data_ready( &c[i].c_sb ) ) {
379 Debug( LDAP_DEBUG_CONNS,
380 "read activity on %d\n", i, 0, 0 );
382 connection_activity( &c[i] );
386 ldap_pvt_thread_yield();
389 Debug( LDAP_DEBUG_TRACE,
390 "slapd shutdown: shutdown initiated.\n",
395 ldap_pvt_thread_mutex_lock( &active_threads_mutex );
396 Debug( LDAP_DEBUG_ANY,
397 "slapd shutdown: waiting for %d threads to terminate\n",
398 active_threads, 0, 0 );
399 while ( active_threads > 0 ) {
400 ldap_pvt_thread_cond_wait(&active_threads_cond, &active_threads_mutex);
402 ldap_pvt_thread_mutex_unlock( &active_threads_mutex );
408 slap_set_shutdown( int sig )
410 Debug( LDAP_DEBUG_ANY, "slapd got shutdown signal %d\n", sig, 0, 0 );
412 ldap_pvt_thread_kill( listener_tid, LDAP_SIGUSR1 );
415 (void) SIGNAL( sig, slap_set_shutdown );
419 slap_do_nothing( int sig )
421 Debug( LDAP_DEBUG_TRACE, "slapd got do_nothing signal %d\n", sig, 0, 0 );
424 (void) SIGNAL( sig, slap_do_nothing );