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 int allow_severity = LOG_INFO;
33 int deny_severity = LOG_NOTICE;
34 #endif /* TCP Wrappers */
39 static volatile sig_atomic_t slapd_shutdown = 0;
41 /* a link to the slapd.conf configuration parameters */
42 extern char *slapd_pid_file;
43 extern char *slapd_args_file;
52 unsigned long len, tag, msgid;
55 struct sockaddr_in addr;
62 dtblsize = sysconf( _SC_OPEN_MAX );
63 #elif HAVE_GETDTABLESIZE
64 dtblsize = getdtablesize();
70 if(dtblsize > FD_SETSIZE) {
71 dtblsize = FD_SETSIZE;
73 #endif /* !FD_SETSIZE */
75 c = (Connection *) ch_calloc( 1, dtblsize * sizeof(Connection) );
77 for ( i = 0; i < dtblsize; i++ ) {
84 c[i].c_sb.sb_options = LBER_NO_READ_AHEAD;
85 c[i].c_sb.sb_naddr = 0;
86 c[i].c_sb.sb_ber.ber_buf = NULL;
87 c[i].c_sb.sb_ber.ber_ptr = NULL;
88 c[i].c_sb.sb_ber.ber_end = NULL;
89 c[i].c_writewaiter = 0;
91 ldap_pvt_thread_mutex_init( &c[i].c_dnmutex );
92 ldap_pvt_thread_mutex_init( &c[i].c_opsmutex );
93 ldap_pvt_thread_mutex_init( &c[i].c_pdumutex );
94 ldap_pvt_thread_cond_init( &c[i].c_wcv );
97 if ( (tcps = socket( AF_INET, SOCK_STREAM, 0 )) == -1 ) {
98 Debug( LDAP_DEBUG_ANY, "socket() failed errno %d (%s)", errno,
99 errno > -1 && errno < sys_nerr ? sys_errlist[errno] :
105 if ( setsockopt( tcps, SOL_SOCKET, SO_REUSEADDR, (char *) &i,
106 sizeof(i) ) == -1 ) {
107 Debug( LDAP_DEBUG_ANY, "setsockopt() failed errno %d (%s)",
108 errno, errno > -1 && errno < sys_nerr ? sys_errlist[errno] :
112 (void) memset( (void *) &addr, '\0', sizeof(addr) );
113 addr.sin_family = AF_INET;
114 addr.sin_addr.s_addr = INADDR_ANY;
115 addr.sin_port = htons( (int)port );
116 if ( bind( tcps, (struct sockaddr *) &addr, sizeof(addr) ) == -1 ) {
117 Debug( LDAP_DEBUG_ANY, "bind() failed errno %d (%s)\n",
118 errno, errno > -1 && errno < sys_nerr ? sys_errlist[errno] :
123 if ( listen( tcps, 5 ) == -1 ) {
124 Debug( LDAP_DEBUG_ANY, "listen() failed errno %d (%s)",
125 errno, errno > -1 && errno < sys_nerr ? sys_errlist[errno] :
130 Debug( LDAP_DEBUG_ANY, "slapd starting\n", 0, 0, 0 );
132 if (( slapd_pid_file != NULL ) &&
133 (( fp = fopen( slapd_pid_file, "w" )) != NULL )) {
134 fprintf( fp, "%d\n", (int) getpid() );
138 if (( slapd_args_file != NULL ) &&
139 (( fp = fopen( slapd_args_file, "w" )) != NULL )) {
140 for ( i = 0; i < g_argc; i++ ) {
141 fprintf( fp, "%s ", g_argv[i] );
147 while ( !slapd_shutdown ) {
148 struct sockaddr_in from;
157 FD_ZERO( &writefds );
159 FD_SET( tcps, &readfds );
164 ldap_pvt_thread_mutex_lock( &active_threads_mutex );
165 Debug( LDAP_DEBUG_CONNS,
166 "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 ( c[i].c_sb.sb_sd != -1 ) {
172 FD_SET( c[i].c_sb.sb_sd, &readfds );
174 if ( c[i].c_writewaiter ) {
175 FD_SET( c[i].c_sb.sb_sd, &writefds );
177 Debug( LDAP_DEBUG_CONNS, " %dr%s", i,
178 c[i].c_writewaiter ? "w" : "", 0 );
181 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
182 ldap_pvt_thread_mutex_unlock( &new_conn_mutex );
184 Debug( LDAP_DEBUG_CONNS, "before select active_threads %d\n",
185 active_threads, 0, 0 );
186 #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS )
189 tvp = active_threads ? &zero : NULL;
191 ldap_pvt_thread_mutex_unlock( &active_threads_mutex );
193 switch ( i = select( dtblsize, &readfds, &writefds, 0, tvp ) ) {
194 case -1: /* failure - try again */
195 Debug( LDAP_DEBUG_CONNS,
196 "select failed errno %d (%s)\n",
197 errno, errno > -1 && errno < sys_nerr ?
198 sys_errlist[errno] : "unknown", 0 );
201 case 0: /* timeout - let threads run */
202 Debug( LDAP_DEBUG_CONNS, "select timeout - yielding\n",
204 ldap_pvt_thread_yield();
207 default: /* something happened - deal with it */
208 Debug( LDAP_DEBUG_CONNS, "select activity on %d descriptors\n", i, 0, 0 );
211 ldap_pvt_thread_mutex_lock( ¤ttime_mutex );
212 time( ¤ttime );
213 ldap_pvt_thread_mutex_unlock( ¤ttime_mutex );
216 ldap_pvt_thread_mutex_lock( &new_conn_mutex );
217 if ( FD_ISSET( tcps, &readfds ) ) {
219 if ( (ns = accept( tcps, (struct sockaddr *) &from,
221 Debug( LDAP_DEBUG_ANY,
222 "accept() failed errno %d (%s)", errno,
223 errno > -1 && errno < sys_nerr ?
224 sys_errlist[errno] : "unknown", 0 );
225 ldap_pvt_thread_mutex_unlock( &new_conn_mutex );
228 if ( ioctl( ns, FIONBIO, (caddr_t) &on ) == -1 ) {
229 Debug( LDAP_DEBUG_ANY,
230 "FIONBIO ioctl on %d failed\n", ns, 0, 0 );
233 Debug( LDAP_DEBUG_CONNS, "new connection on %d\n", ns,
238 if ( getpeername( ns, (struct sockaddr *) &from, &len )
241 client_addr = inet_ntoa( from.sin_addr );
243 #if defined(SLAPD_RLOOKUPS) || defined(HAVE_TCPD)
244 hp = gethostbyaddr( (char *)
245 &(from.sin_addr.s_addr),
246 sizeof(from.sin_addr.s_addr), AF_INET );
249 client_name = hp->h_name;
251 /* normalize the domain */
252 for ( s = client_name; *s; s++ ) {
269 if(!hosts_ctl("slapd",
270 client_name != NULL ? client_name : STRING_UNKNOWN,
271 client_addr != NULL ? client_addr : STRING_UNKNOWN,
275 Statslog( LDAP_DEBUG_ANY,
276 "fd=%d connection from %s (%s) denied.\n",
278 client_name == NULL ? "unknown" : client_name,
279 client_addr == NULL ? "unknown" : client_addr,
283 ldap_pvt_thread_mutex_unlock( &new_conn_mutex );
286 #endif /* HAVE_TCPD */
288 c[ns].c_sb.sb_sd = ns;
289 ldap_pvt_thread_mutex_lock( &ops_mutex );
290 c[ns].c_connid = num_conns++;
291 ldap_pvt_thread_mutex_unlock( &ops_mutex );
293 Statslog( LDAP_DEBUG_STATS,
294 "conn=%d fd=%d connection from %s (%s) accepted.\n",
296 client_name == NULL ? "unknown" : client_name,
297 client_addr == NULL ? "unknown" : client_addr,
300 if ( c[ns].c_addr != NULL ) {
301 free( c[ns].c_addr );
303 c[ns].c_addr = ch_strdup( client_addr );
305 if ( c[ns].c_domain != NULL ) {
306 free( c[ns].c_domain );
309 c[ns].c_domain = ch_strdup( client_name == NULL
310 ? "" : client_name );
312 ldap_pvt_thread_mutex_lock( &c[ns].c_dnmutex );
313 if ( c[ns].c_dn != NULL ) {
317 if ( c[ns].c_cdn != NULL ) {
321 ldap_pvt_thread_mutex_unlock( &c[ns].c_dnmutex );
322 c[ns].c_starttime = currenttime;
323 c[ns].c_opsinitiated = 0;
324 c[ns].c_opscompleted = 0;
326 ldap_pvt_thread_mutex_unlock( &new_conn_mutex );
328 Debug( LDAP_DEBUG_CONNS, "activity on:", 0, 0, 0 );
329 for ( i = 0; i < dtblsize; i++ ) {
332 r = FD_ISSET( i, &readfds );
333 w = FD_ISSET( i, &writefds );
334 if ( i != tcps && (r || w) ) {
335 Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
336 r ? "r" : "", w ? "w" : "" );
339 Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
341 for ( i = 0; i < dtblsize; i++ ) {
342 if ( i == tcps || (! FD_ISSET( i, &readfds ) &&
343 ! FD_ISSET( i, &writefds )) ) {
347 if ( FD_ISSET( i, &writefds ) ) {
348 Debug( LDAP_DEBUG_CONNS,
349 "signaling write waiter on %d\n", i, 0, 0 );
351 ldap_pvt_thread_mutex_lock( &active_threads_mutex );
353 c[i].c_writewaiter = 0;
354 ldap_pvt_thread_cond_signal( &c[i].c_wcv );
355 ldap_pvt_thread_mutex_unlock( &active_threads_mutex );
358 if ( FD_ISSET( i, &readfds ) ) {
359 Debug( LDAP_DEBUG_CONNS,
360 "read activity on %d\n", i, 0, 0 );
362 connection_activity( &c[i] );
366 ldap_pvt_thread_yield();
369 Debug( LDAP_DEBUG_TRACE,
370 "slapd shutdown: shutdown initiated.\n",
375 ldap_pvt_thread_mutex_lock( &active_threads_mutex );
376 Debug( LDAP_DEBUG_ANY,
377 "slapd shutdown: waiting for %d threads to terminate\n",
378 active_threads, 0, 0 );
379 while ( active_threads > 0 ) {
380 ldap_pvt_thread_cond_wait(&active_threads_cond, &active_threads_mutex);
382 ldap_pvt_thread_mutex_unlock( &active_threads_mutex );
388 slap_set_shutdown( int sig )
390 Debug( LDAP_DEBUG_ANY, "slapd got shutdown signal %d\n", sig, 0, 0 );
392 ldap_pvt_thread_kill( listener_tid, LDAP_SIGUSR1 );
395 (void) SIGNAL( sig, slap_set_shutdown );
399 slap_do_nothing( int sig )
401 Debug( LDAP_DEBUG_TRACE, "slapd got do_nothing signal %d\n", sig, 0, 0 );
404 (void) SIGNAL( sig, slap_do_nothing );