/* $OpenLDAP$ */ /* * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved. * COPYING RESTRICTIONS APPLY, see COPYRIGHT file */ #include "portable.h" #include #include #include #include #include #include #include #include #include "ldap_pvt.h" #include "lutil.h" #include "slap.h" #ifdef HAVE_TCPD #include int allow_severity = LOG_INFO; int deny_severity = LOG_NOTICE; #endif /* TCP Wrappers */ #ifdef LDAP_PF_LOCAL #include #endif /* LDAP_PF_LOCAL */ /* globals */ time_t starttime; ber_socket_t dtblsize; typedef union slap_sockaddr { struct sockaddr sa_addr; struct sockaddr_in sa_in_addr; #ifdef LDAP_PF_INET6 struct sockaddr_in6 sa_in6_addr; #endif #ifdef LDAP_PF_LOCAL struct sockaddr_un sa_un_addr; #endif } Sockaddr; typedef struct slap_listener { char* sl_url; char* sl_name; #ifdef HAVE_TLS int sl_is_tls; #endif ber_socket_t sl_sd; Sockaddr sl_sa; #define sl_addr sl_sa.sa_in_addr } Listener; Listener **slap_listeners = NULL; static ber_socket_t wake_sds[2]; #ifdef NO_THREADS static int waking; #define WAKE_LISTENER(w) \ ((w && !waking) ? tcp_write( wake_sds[1], "0", 1 ), waking=1 : 0) #else #define WAKE_LISTENER(w) \ do { if (w) tcp_write( wake_sds[1], "0", 1 ); } while(0) #endif #ifdef HAVE_NT_SERVICE_MANAGER /* in nt_main.c */ extern ldap_pvt_thread_cond_t started_event; extern int is_NT_Service; #endif #ifndef HAVE_WINSOCK static #endif volatile sig_atomic_t slapd_shutdown = 0; static ldap_pvt_thread_t listener_tid; static struct slap_daemon { ldap_pvt_thread_mutex_t sd_mutex; int sd_nactives; #ifndef HAVE_WINSOCK /* In winsock, accept() returns values higher than dtblsize so don't bother with this optimization */ int sd_nfds; #endif fd_set sd_actives; fd_set sd_readers; fd_set sd_writers; } slap_daemon; /* * Add a descriptor to daemon control */ static void slapd_add(ber_socket_t s) { ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex ); assert( !FD_ISSET( s, &slap_daemon.sd_actives )); assert( !FD_ISSET( s, &slap_daemon.sd_readers )); assert( !FD_ISSET( s, &slap_daemon.sd_writers )); #ifndef HAVE_WINSOCK if (s >= slap_daemon.sd_nfds) { slap_daemon.sd_nfds = s + 1; } #endif FD_SET( s, &slap_daemon.sd_actives ); FD_SET( s, &slap_daemon.sd_readers ); Debug( LDAP_DEBUG_CONNS, "daemon: added %ld%s%s\n", (long) s, FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "", FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" ); ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex ); } /* * Remove the descriptor from daemon control */ void slapd_remove(ber_socket_t s, int wake) { ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex ); Debug( LDAP_DEBUG_CONNS, "daemon: removing %ld%s%s\n", (long) s, FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "", FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" ); FD_CLR( s, &slap_daemon.sd_actives ); FD_CLR( s, &slap_daemon.sd_readers ); FD_CLR( s, &slap_daemon.sd_writers ); ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex ); WAKE_LISTENER(wake); } void slapd_clr_write(ber_socket_t s, int wake) { ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex ); assert( FD_ISSET( s, &slap_daemon.sd_actives) ); FD_CLR( s, &slap_daemon.sd_writers ); ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex ); WAKE_LISTENER(wake); } void slapd_set_write(ber_socket_t s, int wake) { ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex ); assert( FD_ISSET( s, &slap_daemon.sd_actives) ); if (!FD_ISSET(s, &slap_daemon.sd_writers)) FD_SET( (unsigned) s, &slap_daemon.sd_writers ); ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex ); WAKE_LISTENER(wake); } void slapd_clr_read(ber_socket_t s, int wake) { ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex ); assert( FD_ISSET( s, &slap_daemon.sd_actives) ); FD_CLR( s, &slap_daemon.sd_readers ); ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex ); WAKE_LISTENER(wake); } void slapd_set_read(ber_socket_t s, int wake) { ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex ); assert( FD_ISSET( s, &slap_daemon.sd_actives) ); if (!FD_ISSET(s, &slap_daemon.sd_readers)) FD_SET( s, &slap_daemon.sd_readers ); ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex ); WAKE_LISTENER(wake); } static void slapd_close(ber_socket_t s) { Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n", (long) s, 0, 0 ); tcp_close(s); } static Listener * open_listener( const char* url ) { int tmp, rc; Listener l; Listener *li; LDAPURLDesc *lud; char *s; int port; #ifdef HAVE_GETADDRINFO char serv[7]; struct addrinfo hints, *res, *sai; int err; #endif rc = ldap_url_parse( url, &lud ); if( rc != LDAP_URL_SUCCESS ) { Debug( LDAP_DEBUG_ANY, "daemon: listen URL \"%s\" parse error=%d\n", url, rc, 0 ); return NULL; } #ifndef HAVE_TLS if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) { Debug( LDAP_DEBUG_ANY, "daemon: TLS not supported (%s)\n", url, 0, 0 ); ldap_free_urldesc( lud ); return NULL; } if(! lud->lud_port ) { lud->lud_port = LDAP_PORT; } #else l.sl_is_tls = ldap_pvt_url_scheme2tls( lud->lud_scheme ); if(! lud->lud_port ) { lud->lud_port = l.sl_is_tls ? LDAPS_PORT : LDAP_PORT; } #endif #ifdef HAVE_GETADDRINFO memset( &hints, '\0', sizeof(hints) ); hints.ai_flags = AI_PASSIVE; hints.ai_family = AF_UNSPEC; hints.ai_socktype = SOCK_STREAM; # ifdef LDAP_PF_LOCAL if ( ldap_pvt_url_scheme2proto(lud->lud_scheme) == LDAP_PROTO_IPC ) { if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) { err = getaddrinfo(NULL, LDAPI_SOCK, &hints, &res); if (!err) unlink( LDAPI_SOCK ); } else { err = getaddrinfo(NULL, lud->lud_host, &hints, &res); if (!err) unlink( lud->lud_host ); } } else # endif /* LDAP_PF_LOCAL */ { snprintf(serv, sizeof serv, "%d", lud->lud_port); if( lud->lud_host == NULL || lud->lud_host[0] == '\0' || strcmp(lud->lud_host, "*") == 0 ) { err = getaddrinfo(NULL, serv, &hints, &res); } else { err = getaddrinfo(lud->lud_host, serv, &hints, &res); } } if ( err ) { Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed\n", 0, 0, 0); ldap_free_urldesc( lud ); return NULL; } ldap_free_urldesc( lud ); sai = res; do { if ( (sai->ai_family != AF_INET) # ifdef LDAP_PF_INET6 && (sai->ai_family != AF_INET6) # endif # ifdef LDAP_PF_LOCAL && (sai->ai_family != AF_LOCAL) # endif ) continue; l.sl_sd = socket( sai->ai_family, sai->ai_socktype, sai->ai_protocol); if ( l.sl_sd == AC_SOCKET_INVALID ) { int err = sock_errno(); Debug( LDAP_DEBUG_ANY, "daemon: socket() failed errno=%d (%s)\n", err, sock_errstr(err), 0 ); continue; } if ( sai->ai_family != AF_LOCAL ) { #else if ( ldap_pvt_url_scheme2proto(lud->lud_scheme) == LDAP_PROTO_IPC ) { #ifdef LDAP_PF_LOCAL port = 0; (void) memset( (void *)&l.sl_sa.sa_un_addr, '\0', sizeof(l.sl_sa.sa_un_addr) ); l.sl_sa.sa_un_addr.sun_family = AF_LOCAL; /* hack: overload the host to be the path */ if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) { strcpy( l.sl_sa.sa_un_addr.sun_path, LDAPI_SOCK ); } else { if ( strlen(lud->lud_host) > (sizeof(l.sl_sa.sa_un_addr.sun_path) - 1) ) { Debug( LDAP_DEBUG_ANY, "daemon: domain socket path (%s) too long in URL: %s", lud->lud_host, url, 0); ldap_free_urldesc( lud ); return NULL; } strcpy( l.sl_sa.sa_un_addr.sun_path, lud->lud_host ); } unlink( l.sl_sa.sa_un_addr.sun_path ); #if 0 /* I don't think we need to set this. */ l.sl_sa.sa_un_addr.sun_len = sizeof( l.sl_sa.sa_un_addr.sun_len ) + sizeof( l.sl_sa.sa_un_addr.sun_family ) + strlen( l.sl_sa.sa_un_addr.sun_path ) + 1; #endif #else Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s", url, 0, 0); ldap_free_urldesc( lud ); return NULL; #endif /* LDAP_PF_LOCAL */ } else { port = lud->lud_port; (void) memset( (void*) &l.sl_addr, '\0', sizeof(l.sl_addr) ); l.sl_addr.sin_family = AF_INET; l.sl_addr.sin_port = htons( (unsigned short) lud->lud_port ); if( lud->lud_host == NULL || lud->lud_host[0] == '\0' || strcmp(lud->lud_host, "*") == 0 ) { l.sl_addr.sin_addr.s_addr = htonl(INADDR_ANY); } else { /* host or address was specified */ if( !inet_aton( lud->lud_host, &l.sl_addr.sin_addr ) ) { struct hostent *he = gethostbyname( lud->lud_host ); if( he == NULL ) { Debug( LDAP_DEBUG_ANY, "daemon: invalid host (%s) in URL: %s", lud->lud_host, url, 0); ldap_free_urldesc( lud ); return NULL; } AC_MEMCPY( &l.sl_addr.sin_addr, he->h_addr, sizeof( l.sl_addr.sin_addr ) ); } } } ldap_free_urldesc( lud ); l.sl_sd = socket( l.sl_sa.sa_addr.sa_family, SOCK_STREAM, 0 ); if ( l.sl_sd == AC_SOCKET_INVALID ) { int err = sock_errno(); Debug( LDAP_DEBUG_ANY, "daemon: socket() failed errno=%d (%s)\n", err, sock_errstr(err), 0 ); return NULL; } #ifndef HAVE_WINSOCK if ( l.sl_sd >= dtblsize ) { Debug( LDAP_DEBUG_ANY, "daemon: listener descriptor %ld is too great %ld\n", (long) l.sl_sd, (long) dtblsize, 0 ); tcp_close( l.sl_sd ); return NULL; } #endif #ifdef LDAP_PF_LOCAL /* for IPv4 and IPv6 sockets only */ if ( l.sl_sa.sa_addr.sa_family != AF_LOCAL ) { #endif /* LDAP_PF_LOCAL */ #endif /* HAVE_GETADDRINFO */ #ifdef SO_REUSEADDR /* enable address reuse */ tmp = 1; rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, sizeof(tmp) ); if ( rc == AC_SOCKET_ERROR ) { int err = sock_errno(); Debug( LDAP_DEBUG_ANY, "slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n", (long) l.sl_sd, err, sock_errstr(err) ); } #endif #ifdef SO_KEEPALIVE /* enable keep alives */ tmp = 1; rc = setsockopt( l.sl_sd, SOL_SOCKET, SO_KEEPALIVE, (char *) &tmp, sizeof(tmp) ); if ( rc == AC_SOCKET_ERROR ) { int err = sock_errno(); Debug( LDAP_DEBUG_ANY, "slapd(%ld): setsockopt(SO_KEEPALIVE) failed errno=%d (%s)\n", (long) l.sl_sd, err, sock_errstr(err) ); } #endif #ifdef TCP_NODELAY /* enable no delay */ tmp = 1; rc = setsockopt( l.sl_sd, IPPROTO_TCP, TCP_NODELAY, (char *)&tmp, sizeof(tmp) ); if ( rc == AC_SOCKET_ERROR ) { int err = sock_errno(); Debug( LDAP_DEBUG_ANY, "slapd(%ld): setsockopt(TCP_NODELAY) failed errno=%d (%s)\n", (long) l.sl_sd, err, sock_errstr(err) ); } #endif #ifdef HAVE_GETADDRINFO } /* sai->ai_family != AF_LOCAL */ if (!bind(l.sl_sd, sai->ai_addr, sai->ai_addrlen)) break; err = sock_errno(); Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n", (long) l.sl_sd, err, sock_errstr(err) ); tcp_close( l.sl_sd ); } while ((sai = sai->ai_next) != NULL); if (!sai) { Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed\n", (long) l.sl_sd, 0, 0 ); return NULL; } switch ( sai->ai_family ) { # ifdef LDAP_PF_LOCAL case AF_LOCAL: if ( chmod( (char *)sai->ai_addr, S_IRWXU ) < 0 ) { int err = sock_errno(); Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)", (long) l.sl_sd, err, sock_errstr(err) ); tcp_close( l.sl_sd ); return NULL; } l.sl_name = ch_malloc( strlen((char *)sai->ai_addr) + sizeof("PATH=") ); sprintf( l.sl_name, "PATH=%s", sai->ai_addr ); break; # endif /* LDAP_PF_LOCAL */ case AF_INET: { char addr[INET_ADDRSTRLEN]; inet_ntop( AF_INET, &((struct sockaddr_in *)sai->ai_addr)->sin_addr, addr, sizeof(addr) ); l.sl_name = ch_malloc( strlen(addr) + strlen(serv) + sizeof("IP=:") ); sprintf( l.sl_name, "IP=%s:%s", addr, serv ); } break; # ifdef LDAP_PF_INET6 case AF_INET6: { char addr[INET6_ADDRSTRLEN]; inet_ntop( AF_INET6, &((struct sockaddr_in6 *)sai->ai_addr)->sin6_addr, addr, sizeof addr); l.sl_name = ch_malloc( strlen(addr) + strlen(serv) + sizeof("IP= ") ); sprintf( l.sl_name, "IP=%s %s", addr, serv ); } break; # endif /* LDAP_PF_INET6 */ default: Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n", (int) sai->ai_family, 0, 0 ); break; } #else #ifdef LDAP_PF_LOCAL /* close conditional */ } #endif /* LDAP_PF_LOCAL */ switch ( l.sl_sa.sa_addr.sa_family ) { #ifdef LDAP_PF_LOCAL case AF_LOCAL: rc = bind( l.sl_sd, (struct sockaddr *)&l.sl_sa, sizeof(l.sl_sa.sa_un_addr) ); break; #endif case AF_INET: rc = bind( l.sl_sd, (struct sockaddr *)&l.sl_sa, sizeof(l.sl_sa.sa_in_addr) ); break; default: rc = AC_SOCKET_ERROR; errno = EINVAL; break; } if ( rc == AC_SOCKET_ERROR ) { int err = sock_errno(); Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n", (long) l.sl_sd, err, sock_errstr(err) ); tcp_close( l.sl_sd ); return NULL; } switch ( l.sl_sa.sa_addr.sa_family ) { #ifdef LDAP_PF_LOCAL case AF_LOCAL: if ( chmod( l.sl_sa.sa_un_addr.sun_path, S_IRWXU ) < 0 ) { int err = sock_errno(); Debug( LDAP_DEBUG_ANY, "daemon: chmod(%ld) failed errno=%d (%s)", (long) l.sl_sd, err, sock_errstr(err) ); tcp_close( l.sl_sd ); return NULL; } l.sl_name = ch_malloc( strlen(l.sl_sa.sa_un_addr.sun_path) + sizeof("PATH=") ); sprintf( l.sl_name, "PATH=%s", l.sl_sa.sa_un_addr.sun_path ); break; #endif /* LDAP_PF_LOCAL */ case AF_INET: l.sl_name = ch_malloc( sizeof("IP=255.255.255.255:65336") ); s = inet_ntoa( l.sl_addr.sin_addr ); sprintf( l.sl_name, "IP=%s:%d", s != NULL ? s : "unknown" , port ); break; default: l.sl_name = ch_strdup( "UNKNOWN" ); break; } #endif /* HAVE_GETADDRINFO */ l.sl_url = ch_strdup( url ); li = ch_malloc( sizeof( Listener ) ); *li = l; Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n", l.sl_url, 0, 0 ); return li; } static int sockinit(void); static int sockdestroy(void); int slapd_daemon_init( const char *urls ) { int i, rc; char **u; Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n", urls ? urls : "", 0, 0 ); if( (rc = sockinit()) != 0 ) { return rc; } #ifdef HAVE_SYSCONF dtblsize = sysconf( _SC_OPEN_MAX ); #elif HAVE_GETDTABLESIZE dtblsize = getdtablesize(); #else dtblsize = FD_SETSIZE; #endif #ifdef FD_SETSIZE if(dtblsize > FD_SETSIZE) { dtblsize = FD_SETSIZE; } #endif /* !FD_SETSIZE */ /* open a pipe (or something equivalent connected to itself). * we write a byte on this fd whenever we catch a signal. The main * loop will be select'ing on this socket, and will wake up when * this byte arrives. */ if( (rc = lutil_pair( wake_sds )) < 0 ) { Debug( LDAP_DEBUG_ANY, "daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 ); return rc; } FD_ZERO( &slap_daemon.sd_readers ); FD_ZERO( &slap_daemon.sd_writers ); if( urls == NULL ) { urls = "ldap:///"; } u = str2charray( urls, " " ); if( u == NULL || u[0] == NULL ) { Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n", urls, 0, 0 ); return -1; } for( i=0; u[i] != NULL; i++ ) { Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n", u[i], 0, 0 ); } if( i == 0 ) { Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n", urls, 0, 0 ); charray_free( u ); return -1; } Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n", i, 0, 0 ); slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) ); for(i = 0; u[i] != NULL; i++ ) { slap_listeners[i] = open_listener( u[i] ); if( slap_listeners[i] == NULL ) { charray_free( u ); return -1; } } slap_listeners[i] = NULL; Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n", i, 0, 0 ); charray_free( u ); ldap_pvt_thread_mutex_init( &slap_daemon.sd_mutex ); return !i; } int slapd_daemon_destroy(void) { connections_destroy(); tcp_close( wake_sds[1] ); tcp_close( wake_sds[0] ); sockdestroy(); return 0; } static void * slapd_daemon_task( void *ptr ) { int l; time_t last_idle_check = slap_get_time(); time( &starttime ); for ( l = 0; slap_listeners[l] != NULL; l++ ) { if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue; if ( listen( slap_listeners[l]->sl_sd, 5 ) == -1 ) { int err = sock_errno(); Debug( LDAP_DEBUG_ANY, "daemon: listen(%s, 5) failed errno=%d (%s)\n", slap_listeners[l]->sl_url, err, sock_errstr(err) ); return( (void*)-1 ); } slapd_add( slap_listeners[l]->sl_sd ); } #ifdef HAVE_NT_SERVICE_MANAGER if ( started_event != NULL ) { ldap_pvt_thread_cond_signal( &started_event ); } #endif /* initialization complete. Here comes the loop. */ while ( !slapd_shutdown ) { ber_socket_t i; int ns; int at; ber_socket_t nfds; #define SLAPD_EBADF_LIMIT 16 int ebadf = 0; #define SLAPD_IDLE_CHECK_LIMIT 4 time_t now = slap_get_time(); fd_set readfds; fd_set writefds; Sockaddr from; #if defined(SLAPD_RLOOKUPS) struct hostent *hp; #endif struct timeval zero; struct timeval *tvp; if( global_idletimeout > 0 && difftime( last_idle_check+global_idletimeout/SLAPD_IDLE_CHECK_LIMIT, now ) < 0 ) { connections_timeout_idle(now); } FD_ZERO( &writefds ); FD_ZERO( &readfds ); zero.tv_sec = 0; zero.tv_usec = 0; ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex ); #ifdef FD_SET_MANUAL_COPY for( s = 0; s < nfds; s++ ) { if(FD_ISSET( &slap_sd_readers, s )) { FD_SET( s, &readfds ); } if(FD_ISSET( &slap_sd_writers, s )) { FD_SET( s, &writefds ); } } #else AC_MEMCPY( &readfds, &slap_daemon.sd_readers, sizeof(fd_set) ); AC_MEMCPY( &writefds, &slap_daemon.sd_writers, sizeof(fd_set) ); #endif assert(!FD_ISSET(wake_sds[0], &readfds)); FD_SET( wake_sds[0], &readfds ); for ( l = 0; slap_listeners[l] != NULL; l++ ) { if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue; if (!FD_ISSET(slap_listeners[l]->sl_sd, &readfds)) FD_SET( slap_listeners[l]->sl_sd, &readfds ); } #ifndef HAVE_WINSOCK nfds = slap_daemon.sd_nfds; #else nfds = dtblsize; #endif ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex ); at = ldap_pvt_thread_pool_backload(&connection_pool); #if defined( HAVE_YIELDING_SELECT ) || defined( NO_THREADS ) tvp = NULL; #else tvp = at ? &zero : NULL; #endif for ( l = 0; slap_listeners[l] != NULL; l++ ) { if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue; Debug( LDAP_DEBUG_CONNS, "daemon: select: listen=%d active_threads=%d tvp=%s\n", slap_listeners[l]->sl_sd, at, tvp == NULL ? "NULL" : "zero" ); } switch(ns = select( nfds, &readfds, #ifdef HAVE_WINSOCK /* don't pass empty fd_set */ ( writefds.fd_count > 0 ? &writefds : NULL ), #else &writefds, #endif NULL, tvp )) { case -1: { /* failure - try again */ int err = sock_errno(); if( err == EBADF #ifdef WSAENOTSOCK /* you'd think this would be EBADF */ || err == WSAENOTSOCK #endif ) { if (++ebadf < SLAPD_EBADF_LIMIT) continue; } if( err != EINTR ) { Debug( LDAP_DEBUG_CONNS, "daemon: select failed (%d): %s\n", err, sock_errstr(err), 0 ); slapd_shutdown = -1; } } continue; case 0: /* timeout - let threads run */ ebadf = 0; Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n", 0, 0, 0 ); ldap_pvt_thread_yield(); continue; default: /* something happened - deal with it */ ebadf = 0; Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n", ns, 0, 0 ); /* FALL THRU */ } if( FD_ISSET( wake_sds[0], &readfds ) ) { char c[BUFSIZ]; tcp_read( wake_sds[0], c, sizeof(c) ); #ifdef NO_THREADS waking = 0; #endif continue; } for ( l = 0; slap_listeners[l] != NULL; l++ ) { ber_int_t s; socklen_t len = sizeof(from); long id; slap_ssf_t ssf = 0; char *authid = NULL; char *dnsname; char *peeraddr; #ifdef LDAP_PF_LOCAL char peername[MAXPATHLEN + sizeof("PATH=")]; #elif defined(LDAP_PF_INET6) char peername[sizeof("IP=ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff 65535")]; #else char peername[sizeof("IP=255.255.255.255:65336")]; #endif /* LDAP_PF_LOCAL */ peername[0] = '\0'; if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID ) continue; if ( !FD_ISSET( slap_listeners[l]->sl_sd, &readfds ) ) continue; if ( (s = accept( slap_listeners[l]->sl_sd, (struct sockaddr *) &from, &len )) == AC_SOCKET_INVALID ) { int err = sock_errno(); Debug( LDAP_DEBUG_ANY, "daemon: accept(%ld) failed errno=%d (%s)\n", (long) slap_listeners[l]->sl_sd, err, sock_errstr(err) ); continue; } #ifdef LDAP_DEBUG ldap_pvt_thread_mutex_lock( &slap_daemon.sd_mutex ); /* newly accepted stream should not be in any of the FD SETS */ assert( !FD_ISSET( s, &slap_daemon.sd_actives) ); assert( !FD_ISSET( s, &slap_daemon.sd_readers) ); assert( !FD_ISSET( s, &slap_daemon.sd_writers) ); ldap_pvt_thread_mutex_unlock( &slap_daemon.sd_mutex ); #endif #ifndef HAVE_WINSOCK /* make sure descriptor number isn't too great */ if ( s >= dtblsize ) { Debug( LDAP_DEBUG_ANY, "daemon: %ld beyond descriptor table size %ld\n", (long) s, (long) dtblsize, 0 ); slapd_close(s); continue; } #endif Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n", (long) s, 0, 0 ); len = sizeof(from); if ( getpeername( s, (struct sockaddr *) &from, &len ) != 0 ) { int err = sock_errno(); Debug( LDAP_DEBUG_ANY, "daemon: getpeername( %ld ) failed: errno=%d (%s)\n", (long) s, err, sock_errstr(err) ); slapd_close(s); continue; } switch ( from.sa_addr.sa_family ) { # ifdef LDAP_PF_LOCAL case AF_LOCAL: sprintf( peername, "PATH=%s", from.sa_un_addr.sun_path ); ssf = LDAP_PVT_SASL_LOCAL_SSF; break; #endif /* LDAP_PF_LOCAL */ # ifdef LDAP_PF_INET6 case AF_INET6: if ( IN6_IS_ADDR_V4MAPPED(&from.sa_in6_addr.sin6_addr) ) { peeraddr = inet_ntoa( *((struct in_addr *) &from.sa_in6_addr.sin6_addr.s6_addr[12]) ); sprintf( peername, "IP=%s:%d", peeraddr != NULL ? peeraddr : "unknown", (unsigned) ntohs( from.sa_in6_addr.sin6_port ) ); } else { char addr[INET6_ADDRSTRLEN]; sprintf( peername, "IP=%s %d", inet_ntop( AF_INET6, &from.sa_in6_addr.sin6_addr, addr, sizeof addr) ? addr : "unknown", (unsigned) ntohs( from.sa_in6_addr.sin6_port ) ); } break; # endif /* LDAP_PF_INET6 */ case AF_INET: peeraddr = inet_ntoa( from.sa_in_addr.sin_addr ); sprintf( peername, "IP=%s:%d", peeraddr != NULL ? peeraddr : "unknown", (unsigned) ntohs( from.sa_in_addr.sin_port ) ); break; default: slapd_close(s); continue; } if ( ( from.sa_addr.sa_family == AF_INET ) #ifdef LDAP_PF_INET6 || ( from.sa_addr.sa_family == AF_INET6 ) #endif ) { #ifdef SLAPD_RLOOKUPS # ifdef LDAP_PF_INET6 if ( from.sa_addr.sa_family == AF_INET6 ) hp = gethostbyaddr( (char *)&(from.sa_in6_addr.sin6_addr), sizeof(from.sa_in6_addr.sin6_addr), AF_INET6 ); else # endif LDAP_PF_INET6 hp = gethostbyaddr( (char *) &(from.sa_in_addr.sin_addr), sizeof(from.sa_in_addr.sin_addr), AF_INET ); dnsname = hp ? ldap_pvt_str2lower( hp->h_name ) : NULL; #else dnsname = NULL; #endif /* SLAPD_RLOOKUPS */ #ifdef HAVE_TCPD if ( !hosts_ctl("slapd", dnsname != NULL ? dnsname : STRING_UNKNOWN, peeraddr != NULL ? peeraddr : STRING_UNKNOWN, STRING_UNKNOWN )) { /* DENY ACCESS */ Statslog( LDAP_DEBUG_ANY, "fd=%ld host access from %s (%s) denied.\n", (long) s, dnsname != NULL ? dnsname : "unknown", peeraddr != NULL ? peeraddr : "unknown", 0, 0 ); slapd_close(s); continue; } #endif /* HAVE_TCPD */ } id = connection_init(s, slap_listeners[l]->sl_url, dnsname != NULL ? dnsname : "unknown", peername, slap_listeners[l]->sl_name, #ifdef HAVE_TLS slap_listeners[l]->sl_is_tls, #else 0, #endif ssf, authid ); if( authid ) ch_free(authid); if( id < 0 ) { Debug( LDAP_DEBUG_ANY, "daemon: connection_init(%ld, %s, %s) failed.\n", (long) s, peername, slap_listeners[l]->sl_name ); slapd_close(s); continue; } Statslog( LDAP_DEBUG_STATS, "daemon: conn=%ld fd=%ld connection from %s (%s) accepted.\n", id, (long) s, peername, slap_listeners[l]->sl_name, 0 ); slapd_add( s ); continue; } #ifdef LDAP_DEBUG Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 ); #ifdef HAVE_WINSOCK for ( i = 0; i < readfds.fd_count; i++ ) { Debug( LDAP_DEBUG_CONNS, " %d%s", readfds.fd_array[i], "r", 0 ); } for ( i = 0; i < writefds.fd_count; i++ ) { Debug( LDAP_DEBUG_CONNS, " %d%s", writefds.fd_array[i], "w", 0 ); } #else for ( i = 0; i < nfds; i++ ) { int r, w; int is_listener = 0; for ( l = 0; slap_listeners[l] != NULL; l++ ) { if ( i == slap_listeners[l]->sl_sd ) { is_listener = 1; break; } } if ( is_listener ) { continue; } r = FD_ISSET( i, &readfds ); w = FD_ISSET( i, &writefds ); if ( r || w ) { Debug( LDAP_DEBUG_CONNS, " %d%s%s", i, r ? "r" : "", w ? "w" : "" ); } } #endif Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 ); #endif /* loop through the writers */ #ifdef HAVE_WINSOCK for ( i = 0; i < writefds.fd_count; i++ ) #else for ( i = 0; i < nfds; i++ ) #endif { ber_socket_t wd; int is_listener = 0; #ifdef HAVE_WINSOCK wd = writefds.fd_array[i]; #else if( ! FD_ISSET( i, &writefds ) ) { continue; } wd = i; #endif for ( l = 0; slap_listeners[l] != NULL; l++ ) { if ( i == slap_listeners[l]->sl_sd ) { is_listener = 1; break; } } if ( is_listener ) { continue; } Debug( LDAP_DEBUG_CONNS, "daemon: write active on %d\n", wd, 0, 0 ); /* * NOTE: it is possible that the connection was closed * and that the stream is now inactive. * connection_write() must valid the stream is still * active. */ if ( connection_write( wd ) < 0 ) { FD_CLR( (unsigned) wd, &readfds ); slapd_close( wd ); } } #ifdef HAVE_WINSOCK for ( i = 0; i < readfds.fd_count; i++ ) #else for ( i = 0; i < nfds; i++ ) #endif { ber_socket_t rd; int is_listener = 0; #ifdef HAVE_WINSOCK rd = readfds.fd_array[i]; #else if( ! FD_ISSET( i, &readfds ) ) { continue; } rd = i; #endif for ( l = 0; slap_listeners[l] != NULL; l++ ) { if ( rd == slap_listeners[l]->sl_sd ) { is_listener = 1; break; } } if ( is_listener ) { continue; } Debug ( LDAP_DEBUG_CONNS, "daemon: read activity on %d\n", rd, 0, 0 ); /* * NOTE: it is possible that the connection was closed * and that the stream is now inactive. * connection_read() must valid the stream is still * active. */ if ( connection_read( rd ) < 0 ) { slapd_close( rd ); } } ldap_pvt_thread_yield(); } if( slapd_shutdown > 0 ) { Debug( LDAP_DEBUG_TRACE, "daemon: shutdown requested and initiated.\n", 0, 0, 0 ); } else if ( slapd_shutdown < 0 ) { #ifdef HAVE_NT_SERVICE_MANAGER if (slapd_shutdown == -1) Debug( LDAP_DEBUG_TRACE, "daemon: shutdown initiated by Service Manager.\n", 0, 0, 0); else #endif Debug( LDAP_DEBUG_TRACE, "daemon: abnormal condition, shutdown initiated.\n", 0, 0, 0 ); } else { Debug( LDAP_DEBUG_TRACE, "daemon: no active streams, shutdown initiated.\n", 0, 0, 0 ); } for ( l = 0; slap_listeners[l] != NULL; l++ ) { if ( slap_listeners[l]->sl_sd != AC_SOCKET_INVALID ) { #ifdef LDAP_PF_LOCAL if ( slap_listeners[l]->sl_sa.sa_addr.sa_family == AF_LOCAL ) { unlink( slap_listeners[l]->sl_sa.sa_un_addr.sun_path ); } #endif /* LDAP_PF_LOCAL */ slapd_close( slap_listeners[l]->sl_sd ); break; } } Debug( LDAP_DEBUG_ANY, "slapd shutdown: waiting for %d threads to terminate\n", ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 ); ldap_pvt_thread_pool_destroy(&connection_pool, 1); return NULL; } int slapd_daemon( void ) { int rc; connections_init(); #define SLAPD_LISTENER_THREAD 1 #if defined( SLAPD_LISTENER_THREAD ) || !defined(HAVE_PTHREADS) /* listener as a separate THREAD */ rc = ldap_pvt_thread_create( &listener_tid, 0, slapd_daemon_task, NULL ); if ( rc != 0 ) { Debug( LDAP_DEBUG_ANY, "listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 ); return rc; } /* wait for the listener thread to complete */ ldap_pvt_thread_join( listener_tid, (void *) NULL ); #else /* expermimental code */ listener_tid = pthread_self(); slapd_daemon_task( NULL ); #endif return 0; } int sockinit(void) { #if defined( HAVE_WINSOCK2 ) WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD( 2, 0 ); err = WSAStartup( wVersionRequested, &wsaData ); if ( err != 0 ) { /* Tell the user that we couldn't find a usable */ /* WinSock DLL. */ return -1; } /* Confirm that the WinSock DLL supports 2.0.*/ /* Note that if the DLL supports versions greater */ /* than 2.0 in addition to 2.0, it will still return */ /* 2.0 in wVersion since that is the version we */ /* requested. */ if ( LOBYTE( wsaData.wVersion ) != 2 || HIBYTE( wsaData.wVersion ) != 0 ) { /* Tell the user that we couldn't find a usable */ /* WinSock DLL. */ WSACleanup(); return -1; } /* The WinSock DLL is acceptable. Proceed. */ #elif defined( HAVE_WINSOCK ) WSADATA wsaData; if ( WSAStartup( 0x0101, &wsaData ) != 0 ) { return -1; } #endif return 0; } int sockdestroy(void) { #if defined( HAVE_WINSOCK2 ) || defined( HAVE_WINSOCK ) WSACleanup(); #endif return 0; } RETSIGTYPE slap_sig_shutdown( int sig ) { Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0); /* * If the NT Service Manager is controlling the server, we don't * want SIGBREAK to kill the server. For some strange reason, * SIGBREAK is generated when a user logs out. */ #if HAVE_NT_SERVICE_MANAGER && SIGBREAK if (is_NT_Service && sig == SIGBREAK) Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n", 0, 0, 0); else #endif slapd_shutdown = sig; WAKE_LISTENER(1); /* reinstall self */ (void) SIGNAL_REINSTALL( sig, slap_sig_shutdown ); } RETSIGTYPE slap_sig_wake( int sig ) { WAKE_LISTENER(1); /* reinstall self */ (void) SIGNAL_REINSTALL( sig, slap_sig_wake ); }