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openldap/servers/slapd/daemon.c

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/* $OpenLDAP$ */
/*
* Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include "portable.h"
#include <stdio.h>
#include <ac/ctype.h>
#include <ac/errno.h>
#include <ac/signal.h>
#include <ac/socket.h>
#include <ac/string.h>
#include <ac/time.h>
#include <ac/unistd.h>
#include "ldap_pvt.h"
#include "lutil.h"
#include "slap.h"
#ifdef HAVE_TCPD
#include <tcpd.h>
int allow_severity = LOG_INFO;
int deny_severity = LOG_NOTICE;
#endif /* TCP Wrappers */
#ifdef LDAP_PF_LOCAL
#include <sys/stat.h>
#endif /* LDAP_PF_LOCAL */
/* globals */
time_t starttime;
ber_socket_t dtblsize;
typedef struct slap_listener {
char* sl_url;
char* sl_name;
#ifdef HAVE_TLS
int sl_is_tls;
#endif
#ifdef LDAP_CONNECTIONLESS
int sl_is_udp; /* UDP listener is also data port */
#endif
ber_socket_t sl_sd;
Sockaddr sl_sa;
#define sl_addr sl_sa.sa_in_addr
} Listener;
Listener **slap_listeners = NULL;
#define SLAPD_LISTEN 10
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 */
/* externs are frowned upon, but so is NT :-) */
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 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;
#ifdef HAVE_SLP
/*
* SLP related functions
*/
#include <slp.h>
#define LDAP_SRVTYPE_PREFIX "service:ldap://"
#define LDAPS_SRVTYPE_PREFIX "service:ldaps://"
static char** slapd_srvurls = NULL;
static SLPHandle slapd_hslp = 0;
void slapd_slp_init( const char* urls ) {
int i;
slapd_srvurls = str2charray( urls, " " );
if( slapd_srvurls == NULL ) return;
/* find and expand INADDR_ANY URLs */
for( i=0; slapd_srvurls[i] != NULL; i++ ) {
if( strcmp( slapd_srvurls[i], "ldap:///" ) == 0) {
char *host = ldap_pvt_get_fqdn( NULL );
if ( host != NULL ) {
slapd_srvurls[i] = (char *) realloc( slapd_srvurls[i],
strlen( host ) +
sizeof( LDAP_SRVTYPE_PREFIX ) );
strcpy( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX );
strcat( slapd_srvurls[i], host );
ch_free( host );
}
} else if ( strcmp( slapd_srvurls[i], "ldaps:///" ) == 0) {
char *host = ldap_pvt_get_fqdn( NULL );
if ( host != NULL ) {
slapd_srvurls[i] = (char *) realloc( slapd_srvurls[i],
strlen( host ) +
sizeof( LDAPS_SRVTYPE_PREFIX ) );
strcpy( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX );
strcat( slapd_srvurls[i], host );
ch_free( host );
}
}
}
/* open the SLP handle */
SLPOpen( "en", 0, &slapd_hslp );
}
void slapd_slp_deinit() {
if( slapd_srvurls == NULL ) return;
charray_free( slapd_srvurls );
slapd_srvurls = NULL;
/* close the SLP handle */
SLPClose( slapd_hslp );
}
void slapd_slp_regreport(
SLPHandle hslp,
SLPError errcode,
void* cookie )
{
/* empty report */
}
void slapd_slp_reg() {
int i;
for( i=0; slapd_srvurls[i] != NULL; i++ ) {
if( strncmp( slapd_srvurls[i], LDAP_SRVTYPE_PREFIX,
sizeof( LDAP_SRVTYPE_PREFIX ) - 1 ) == 0 ||
strncmp( slapd_srvurls[i], LDAPS_SRVTYPE_PREFIX,
sizeof( LDAPS_SRVTYPE_PREFIX ) - 1 ) == 0 )
{
SLPReg( slapd_hslp,
slapd_srvurls[i],
SLP_LIFETIME_MAXIMUM,
"ldap",
"",
1,
slapd_slp_regreport,
NULL );
}
}
}
void slapd_slp_dereg() {
int i;
for( i=0; slapd_srvurls[i] != NULL; i++ ) {
SLPDereg( slapd_hslp,
slapd_srvurls[i],
slapd_slp_regreport,
NULL );
}
}
#endif /* HAVE_SLP */
/*
* 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 );
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
"slapd_add: added %ld%s%s\n",
(long)s,
FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" ));
#else
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" : "" );
#endif
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 );
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
"slapd_remove: removing %ld%s%s\n",
(long) s,
FD_ISSET(s, &slap_daemon.sd_readers) ? "r" : "",
FD_ISSET(s, &slap_daemon.sd_writers) ? "w" : "" ));
#else
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" : "" );
#endif
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) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
"slapd_close: closing %ld\n", (long)s ));
#else
Debug( LDAP_DEBUG_CONNS, "daemon: closing %ld\n",
(long) s, 0, 0 );
#endif
tcp_close(s);
}
static void slap_free_listener_addresses(struct sockaddr **sal)
{
struct sockaddr **sap;
if (sal == NULL) {
return;
}
for (sap = sal; *sap != NULL; sap++) {
ch_free(*sap);
}
ch_free(sal);
}
/* port = 0 indicates AF_LOCAL */
static int slap_get_listener_addresses(
const char *host,
unsigned short port,
struct sockaddr ***sal)
{
struct sockaddr **sap;
#ifdef LDAP_PF_LOCAL
if ( port == 0 ) {
*sal = ch_malloc(2 * sizeof(void *));
if (*sal == NULL) {
return -1;
}
sap = *sal;
*sap = ch_malloc(sizeof(struct sockaddr_un));
if (*sap == NULL)
goto errexit;
sap[1] = NULL;
if ( strlen(host) >
(sizeof(((struct sockaddr_un *)*sap)->sun_path) - 1) ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slap_get_listener_addresses: domain socket path (%s) too long in URL\n",
host ));
#else
Debug( LDAP_DEBUG_ANY,
"daemon: domain socket path (%s) too long in URL",
host, 0, 0);
#endif
goto errexit;
}
(void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_un) );
(*sap)->sa_family = AF_LOCAL;
strcpy( ((struct sockaddr_un *)*sap)->sun_path, host );
} else
#endif
{
#ifdef HAVE_GETADDRINFO
struct addrinfo hints, *res, *sai;
int n, err;
char serv[7];
memset( &hints, '\0', sizeof(hints) );
hints.ai_flags = AI_PASSIVE;
hints.ai_socktype = SOCK_STREAM;
hints.ai_family = AF_UNSPEC;
snprintf(serv, sizeof serv, "%d", port);
if ( (err = getaddrinfo(host, serv, &hints, &res)) ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slap_get_listener_addresses: getaddrinfo failed: %s\n",
AC_GAI_STRERROR(err) ));
#else
Debug( LDAP_DEBUG_ANY, "daemon: getaddrinfo failed: %s\n",
AC_GAI_STRERROR(err), 0, 0);
#endif
return -1;
}
sai = res;
for (n=2; (sai = sai->ai_next) != NULL; n++) {
/* EMPTY */ ;
}
*sal = ch_malloc(n * sizeof(void *));
if (*sal == NULL) {
return -1;
}
sap = *sal;
*sap = NULL;
for ( sai=res; sai; sai=sai->ai_next ) {
if( sai->ai_addr == NULL ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slap_get_listener_addresses: "
"getaddrinfo ai_addr is NULL?\n" ));
#else
Debug( LDAP_DEBUG_ANY, "slap_get_listener_addresses: "
"getaddrinfo ai_addr is NULL?\n", 0, 0, 0 );
#endif
freeaddrinfo(res);
goto errexit;
}
switch (sai->ai_family) {
# ifdef LDAP_PF_INET6
case AF_INET6:
*sap = ch_malloc(sizeof(struct sockaddr_in6));
if (*sap == NULL) {
freeaddrinfo(res);
goto errexit;
}
*(struct sockaddr_in6 *)*sap =
*((struct sockaddr_in6 *)sai->ai_addr);
break;
# endif
case AF_INET:
*sap = ch_malloc(sizeof(struct sockaddr_in));
if (*sap == NULL) {
freeaddrinfo(res);
goto errexit;
}
*(struct sockaddr_in *)*sap =
*((struct sockaddr_in *)sai->ai_addr);
break;
default:
*sap = NULL;
break;
}
if (*sap != NULL) {
(*sap)->sa_family = sai->ai_family;
sap++;
*sap = NULL;
}
}
freeaddrinfo(res);
#else
struct in_addr in;
if ( host == NULL ) {
in.s_addr = htonl(INADDR_ANY);
} else if ( !inet_aton( host, &in ) ) {
struct hostent *he = gethostbyname( host );
if( he == NULL ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slap_get_listener_addresses: invalid host %s\n",
host ));
#else
Debug( LDAP_DEBUG_ANY,
"daemon: invalid host %s", host, 0, 0);
#endif
return -1;
}
AC_MEMCPY( &in, he->h_addr, sizeof( in ) );
}
*sal = ch_malloc(2 * sizeof(void *));
if (*sal == NULL) {
return -1;
}
sap = *sal;
*sap = ch_malloc(sizeof(struct sockaddr_in));
if (*sap == NULL) {
goto errexit;
}
sap[1] = NULL;
(void)memset( (void *)*sap, '\0', sizeof(struct sockaddr_in) );
(*sap)->sa_family = AF_INET;
((struct sockaddr_in *)*sap)->sin_port = htons(port);
((struct sockaddr_in *)*sap)->sin_addr = in;
#endif
}
return 0;
errexit:
slap_free_listener_addresses(*sal);
return -1;
}
static Listener * slap_open_listener(
const char* url )
{
int tmp, rc;
Listener l;
Listener *li;
LDAPURLDesc *lud;
unsigned short port;
int err, addrlen = 0;
struct sockaddr **sal, **psal;
int socktype = SOCK_STREAM; /* default to COTS */
rc = ldap_url_parse( url, &lud );
if( rc != LDAP_URL_SUCCESS ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
"slap_open_listener: listen URL \"%s\" parse error %d\n",
url, rc ));
#else
Debug( LDAP_DEBUG_ANY,
"daemon: listen URL \"%s\" parse error=%d\n",
url, rc, 0 );
#endif
return NULL;
}
#ifndef HAVE_TLS
if( ldap_pvt_url_scheme2tls( lud->lud_scheme ) ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slap_open_listener: TLS is not supported (%s)\n",
url ));
#else
Debug( LDAP_DEBUG_ANY,
"daemon: TLS not supported (%s)\n",
url, 0, 0 );
#endif
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
port = (unsigned short) lud->lud_port;
tmp = ldap_pvt_url_scheme2proto(lud->lud_scheme);
if ( tmp == LDAP_PROTO_IPC ) {
#ifdef LDAP_PF_LOCAL
if ( lud->lud_host == NULL || lud->lud_host[0] == '\0' ) {
err = slap_get_listener_addresses(LDAPI_SOCK, 0, &sal);
} else {
err = slap_get_listener_addresses(lud->lud_host, 0, &sal);
}
#else
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slap_open_listener: URL scheme is not supported: %s\n",
url ));
#else
Debug( LDAP_DEBUG_ANY, "daemon: URL scheme not supported: %s",
url, 0, 0);
#endif
ldap_free_urldesc( lud );
return NULL;
#endif
} else {
#ifdef LDAP_CONNECTIONLESS
l.sl_is_udp = ( tmp == LDAP_PROTO_UDP );
#endif
if( lud->lud_host == NULL || lud->lud_host[0] == '\0'
|| strcmp(lud->lud_host, "*") == 0 )
{
err = slap_get_listener_addresses(NULL, port, &sal);
} else {
err = slap_get_listener_addresses(lud->lud_host, port, &sal);
}
}
ldap_free_urldesc( lud );
if ( err ) {
return NULL;
}
psal = sal;
while ( *sal != NULL ) {
switch( (*sal)->sa_family ) {
case AF_INET:
#ifdef LDAP_PF_INET6
case AF_INET6:
#endif
#ifdef LDAP_PF_LOCAL
case AF_LOCAL:
#endif
break;
default:
sal++;
continue;
}
#ifdef LDAP_CONNECTIONLESS
if (l.sl_is_udp)
socktype = SOCK_DGRAM;
#endif
l.sl_sd = socket( (*sal)->sa_family, socktype, 0);
if ( l.sl_sd == AC_SOCKET_INVALID ) {
int err = sock_errno();
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
"slap_open_listener: socket() failed errno=%d (%s)\n",
err, sock_errstr(err) ));
#else
Debug( LDAP_DEBUG_ANY,
"daemon: socket() failed errno=%d (%s)\n", err,
sock_errstr(err), 0 );
#endif
sal++;
continue;
}
#ifndef HAVE_WINSOCK
if ( l.sl_sd >= dtblsize ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
"slap_open_listener: listener descriptor %ld is too great %ld\n",
(long)l.sl_sd, (long)dtblsize ));
#else
Debug( LDAP_DEBUG_ANY,
"daemon: listener descriptor %ld is too great %ld\n",
(long) l.sl_sd, (long) dtblsize, 0 );
#endif
tcp_close( l.sl_sd );
sal++;
continue;
}
#endif
#ifdef LDAP_PF_LOCAL
if ( (*sal)->sa_family == AF_LOCAL ) {
unlink ( ((struct sockaddr_un *)*sal)->sun_path );
} else
#endif
{
#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();
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slap_open_listener: setsockopt( %ld, SO_REUSEADDR ) failed errno %d (%s)\n",
(long)l.sl_sd, err, sock_errstr(err) ));
#else
Debug( LDAP_DEBUG_ANY,
"slapd(%ld): setsockopt(SO_REUSEADDR) failed errno=%d (%s)\n",
(long) l.sl_sd, err, sock_errstr(err) );
#endif
}
#endif
}
switch( (*sal)->sa_family ) {
case AF_INET:
addrlen = sizeof(struct sockaddr_in);
break;
#ifdef LDAP_PF_INET6
case AF_INET6:
addrlen = sizeof(struct sockaddr_in6);
break;
#endif
#ifdef LDAP_PF_LOCAL
case AF_LOCAL:
addrlen = sizeof(struct sockaddr_un);
break;
#endif
}
if (!bind(l.sl_sd, *sal, addrlen))
break;
err = sock_errno();
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slap_open_listener: bind(%ld) failed errno=%d (%s)\n",
(long)l.sl_sd, err, sock_errstr(err) ));
#else
Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed errno=%d (%s)\n",
(long) l.sl_sd, err, sock_errstr(err) );
#endif
tcp_close( l.sl_sd );
sal++;
} /* while ( *sal != NULL ) */
if ( *sal == NULL ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slap_open_listener: bind(%ld) failed.\n", (long)l.sl_sd ));
#else
Debug( LDAP_DEBUG_ANY, "daemon: bind(%ld) failed\n",
(long) l.sl_sd, 0, 0 );
#endif
slap_free_listener_addresses(psal);
return NULL;
}
switch ( (*sal)->sa_family ) {
#ifdef LDAP_PF_LOCAL
case AF_LOCAL: {
char *addr = ((struct sockaddr_un *)*sal)->sun_path;
if ( chmod( addr, S_IRWXU ) < 0 ) {
int err = sock_errno();
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slap_open_listener: fchmod(%ld) failed errno=%d (%s)\n",
(long)l.sl_sd, err, sock_errstr(err) ));
#else
Debug( LDAP_DEBUG_ANY, "daemon: fchmod(%ld) failed errno=%d (%s)",
(long) l.sl_sd, err, sock_errstr(err) );
#endif
tcp_close( l.sl_sd );
slap_free_listener_addresses(psal);
return NULL;
}
l.sl_name = ch_malloc( strlen(addr) + sizeof("PATH=") );
sprintf( l.sl_name, "PATH=%s", addr );
} break;
#endif /* LDAP_PF_LOCAL */
case AF_INET: {
char *s;
#if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
char addr[INET_ADDRSTRLEN];
inet_ntop( AF_INET, &((struct sockaddr_in *)*sal)->sin_addr,
addr, sizeof(addr) );
s = addr;
port = ((struct sockaddr_in *)*sal) ->sin_port;
#else
s = inet_ntoa( l.sl_addr.sin_addr );
port = l.sl_addr.sin_port;
#endif
l.sl_name = ch_malloc( sizeof("IP=255.255.255.255:65535") );
sprintf( l.sl_name, "IP=%s:%d",
s != NULL ? s : "unknown" , port );
} break;
#ifdef LDAP_PF_INET6
case AF_INET6: {
char addr[INET6_ADDRSTRLEN];
inet_ntop( AF_INET6, &((struct sockaddr_in6 *)*sal)->sin6_addr,
addr, sizeof addr);
port = ((struct sockaddr_in6 *)*sal)->sin6_port;
l.sl_name = ch_malloc( strlen(addr) + sizeof("IP= 65535") );
sprintf( l.sl_name, "IP=%s %d", addr, port );
} break;
#endif /* LDAP_PF_INET6 */
default:
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slap_open_listener: unsupported address family (%d)\n",
(int)(*sal)->sa_family ));
#else
Debug( LDAP_DEBUG_ANY, "daemon: unsupported address family (%d)\n",
(int) (*sal)->sa_family, 0, 0 );
#endif
break;
}
slap_free_listener_addresses(psal);
l.sl_url = ch_strdup( url );
li = ch_malloc( sizeof( Listener ) );
*li = l;
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_RESULTS,
"slap_open_listener: daemon initialzed %s\n", l.sl_url ));
#else
Debug( LDAP_DEBUG_TRACE, "daemon: initialized %s\n",
l.sl_url, 0, 0 );
#endif
return li;
}
static int sockinit(void);
static int sockdestroy(void);
int slapd_daemon_init( const char *urls )
{
int i, rc;
char **u;
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_ARGS,
"slapd_daemon_init: %s\n",
urls ? urls : "<null>" ));
#else
Debug( LDAP_DEBUG_ARGS, "daemon_init: %s\n",
urls ? urls : "<null>", 0, 0 );
#endif
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 ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
"slap_daemon_init: lutil_pair() failed rc=%d\n", rc ));
#else
Debug( LDAP_DEBUG_ANY,
"daemon: lutil_pair() failed rc=%d\n", rc, 0, 0 );
#endif
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 ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
"slap_daemon_init: no urls (%s) provided.\n", urls ));
#else
Debug( LDAP_DEBUG_ANY, "daemon_init: no urls (%s) provided.\n",
urls, 0, 0 );
#endif
return -1;
}
for( i=0; u[i] != NULL; i++ ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
"slap_daemon_init: listen on %s\n.", u[i] ));
#else
Debug( LDAP_DEBUG_TRACE, "daemon_init: listen on %s\n",
u[i], 0, 0 );
#endif
}
if( i == 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slap_daemon_init: no listeners to open (%s)\n", urls ));
#else
Debug( LDAP_DEBUG_ANY, "daemon_init: no listeners to open (%s)\n",
urls, 0, 0 );
#endif
charray_free( u );
return -1;
}
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slap_daemon_init: %d listeners to open...\n", i ));
#else
Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners to open...\n",
i, 0, 0 );
#endif
slap_listeners = ch_malloc( (i+1)*sizeof(Listener *) );
for(i = 0; u[i] != NULL; i++ ) {
slap_listeners[i] = slap_open_listener( u[i] );
if( slap_listeners[i] == NULL ) {
charray_free( u );
return -1;
}
}
slap_listeners[i] = NULL;
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
"slap_daemon_init: %d listeners opened\n", i ));
#else
Debug( LDAP_DEBUG_TRACE, "daemon_init: %d listeners opened\n",
i, 0, 0 );
#endif
#ifdef HAVE_SLP
slapd_slp_init( urls );
slapd_slp_reg();
#endif
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();
#ifdef HAVE_SLP
slapd_slp_dereg();
slapd_slp_deinit();
#endif
return 0;
}
static void *
slapd_daemon_task(
void *ptr
)
{
int l;
time_t last_idle_check = 0;
time( &starttime );
if ( global_idletimeout > 0 ) {
last_idle_check = slap_get_time();
}
for ( l = 0; slap_listeners[l] != NULL; l++ ) {
if ( slap_listeners[l]->sl_sd == AC_SOCKET_INVALID )
continue;
#ifdef LDAP_CONNECTIONLESS
/* Since this is connectionless, the data port is the
* listening port. The listen() and accept() calls
* are unnecessary.
*/
if ( slap_listeners[l]->sl_is_udp )
{
slapd_add( slap_listeners[l]->sl_sd );
continue;
}
#endif
if ( listen( slap_listeners[l]->sl_sd, SLAPD_LISTEN ) == -1 ) {
int err = sock_errno();
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
"slapd_daemon_task: listen( %s, 5 ) failed errno=%d (%s)\n",
slap_listeners[l]->sl_url, err, sock_errstr(err) ));
#else
Debug( LDAP_DEBUG_ANY,
"daemon: listen(%s, 5) failed errno=%d (%s)\n",
slap_listeners[l]->sl_url, err,
sock_errstr(err) );
#endif
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;
int emfile = 0;
#define SLAPD_IDLE_CHECK_LIMIT 4
time_t now;
fd_set readfds;
fd_set writefds;
Sockaddr from;
#if defined(SLAPD_RLOOKUPS)
struct hostent *hp;
#endif
struct timeval zero;
struct timeval *tvp;
if( emfile ) {
now = slap_get_time();
connections_timeout_idle( now );
}
else if ( global_idletimeout > 0 ) {
now = slap_get_time();
if ( 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;
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
"slapd_daemon_task: select: listen=%d active_threads=%d tvp=%s\n",
slap_listeners[l]->sl_sd, at, tvp == NULL ? "NULL" : "zero" ));
#else
Debug( LDAP_DEBUG_CONNS,
"daemon: select: listen=%d active_threads=%d tvp=%s\n",
slap_listeners[l]->sl_sd, at,
tvp == NULL ? "NULL" : "zero" );
#endif
}
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 ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slapd_daemon_task: select failed (%d): %s\n",
err, sock_errstr(err) ));
#else
Debug( LDAP_DEBUG_CONNS,
"daemon: select failed (%d): %s\n",
err, sock_errstr(err), 0 );
#endif
slapd_shutdown = -1;
}
}
continue;
case 0: /* timeout - let threads run */
ebadf = 0;
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
"slapd_daemon_task: select timeout - yielding\n" ));
#else
Debug( LDAP_DEBUG_CONNS, "daemon: select timeout - yielding\n",
0, 0, 0 );
#endif
ldap_pvt_thread_yield();
continue;
default: /* something happened - deal with it */
if( slapd_shutdown ) continue;
ebadf = 0;
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
"slapd_daemon_task: activity on %d descriptors\n", ns ));
#else
Debug( LDAP_DEBUG_CONNS, "daemon: activity on %d descriptors\n",
ns, 0, 0 );
#endif
/* 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_socket_t s;
socklen_t len = sizeof(from);
long id;
slap_ssf_t ssf = 0;
char *authid = NULL;
char *dnsname = NULL;
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;
#ifdef LDAP_CONNECTIONLESS
if ( slap_listeners[l]->sl_is_udp )
{
/* The first time we receive a query, we set this
* up as a "connection". It remains open for the life
* of the slapd.
*/
if ( slap_listeners[l]->sl_is_udp < 2 )
{
id = connection_init(
slap_listeners[l]->sl_sd,
slap_listeners[l]->sl_url, "", "",
slap_listeners[l]->sl_name,
2, ssf, authid );
slap_listeners[l]->sl_is_udp++;
}
continue;
}
#endif
s = accept( slap_listeners[l]->sl_sd,
(struct sockaddr *) &from, &len );
if ( s == AC_SOCKET_INVALID ) {
int err = sock_errno();
#ifdef EMFILE
if( err == EMFILE ) {
emfile++;
} else
#endif
#ifdef ENFILE
if( err == ENFILE ) {
emfile++;
} else
#endif
{
emfile=0;
}
if( emfile < 3 ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
"slapd_daemon_task: accept(%ld) failed errno=%d (%s)\n",
(long)slap_listeners[l]->sl_sd, err, sock_errstr(err) ));
#else
Debug( LDAP_DEBUG_ANY,
"daemon: accept(%ld) failed errno=%d (%s)\n",
(long) slap_listeners[l]->sl_sd, err,
sock_errstr(err) );
#endif
} else {
/* prevent busy loop */
# ifdef HAVE_USLEEP
if( emfile % 4 == 3 ) usleep( 250 );
# else
if( emfile % 8 == 7 ) sleep( 1 );
# endif
}
ldap_pvt_thread_yield();
continue;
}
emfile = 0;
#ifndef HAVE_WINSOCK
/* make sure descriptor number isn't too great */
if ( s >= dtblsize ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
"slapd_daemon_task: %ld beyond descriptor table size %ld\n",
(long)s, (long)dtblsize ));
#else
Debug( LDAP_DEBUG_ANY,
"daemon: %ld beyond descriptor table size %ld\n",
(long) s, (long) dtblsize, 0 );
#endif
slapd_close(s);
ldap_pvt_thread_yield();
continue;
}
#endif
#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
#if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
#ifdef LDAP_PF_LOCAL
/* for IPv4 and IPv6 sockets only */
if ( from.sa_addr.sa_family != AF_LOCAL )
#endif /* LDAP_PF_LOCAL */
{
int rc;
int tmp;
#ifdef SO_KEEPALIVE
/* enable keep alives */
tmp = 1;
rc = setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
(char *) &tmp, sizeof(tmp) );
if ( rc == AC_SOCKET_ERROR ) {
int err = sock_errno();
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
"slapd_daemon_task: setsockopt( %ld, SO_KEEPALIVE) failed errno=%d (%s)\n",
(long)s, err, sock_errstr(err) ));
#else
Debug( LDAP_DEBUG_ANY,
"slapd(%ld): setsockopt(SO_KEEPALIVE) failed "
"errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
#endif
}
#endif
#ifdef TCP_NODELAY
/* enable no delay */
tmp = 1;
rc = setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
(char *)&tmp, sizeof(tmp) );
if ( rc == AC_SOCKET_ERROR ) {
int err = sock_errno();
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
"slapd_daemon_task: setsockopt( %ld, TCP_NODELAY) failed errno=%d (%s)\n",
(long)s, err, sock_errstr(err) ));
#else
Debug( LDAP_DEBUG_ANY,
"slapd(%ld): setsockopt(TCP_NODELAY) failed "
"errno=%d (%s)\n", (long) s, err, sock_errstr(err) );
#endif
}
#endif
}
#endif
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL1,
"slapd_daemon_task: new connection on %ld\n", (long)s ));
#else
Debug( LDAP_DEBUG_CONNS, "daemon: new connection on %ld\n",
(long) s, 0, 0 );
#endif
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 ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_INFO,
"slapd_daemon_task: connection_init(%ld, %s, %s) failed.\n",
(long)s, peername, slap_listeners[l]->sl_name ));
#else
Debug( LDAP_DEBUG_ANY,
"daemon: connection_init(%ld, %s, %s) failed.\n",
(long) s,
peername,
slap_listeners[l]->sl_name );
#endif
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
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
"slapd_daemon_task: activity on " ));
#else
Debug( LDAP_DEBUG_CONNS, "daemon: activity on:", 0, 0, 0 );
#endif
#ifdef HAVE_WINSOCK
for ( i = 0; i < readfds.fd_count; i++ ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
" %d%s", readfds.fd_array[i], "r", 0 ));
#else
Debug( LDAP_DEBUG_CONNS, " %d%s",
readfds.fd_array[i], "r", 0 );
#endif
}
for ( i = 0; i < writefds.fd_count; i++ ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
" %d%s", writefds.fd_array[i], "w" ));
#else
Debug( LDAP_DEBUG_CONNS, " %d%s",
writefds.fd_array[i], "w", 0 );
#endif
}
#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 ) {
#ifdef LDAP_CONNECTIONLESS
/* The listener is the data port. Don't
* skip it.
*/
if (slap_listeners[l]->sl_is_udp)
continue;
#endif
is_listener = 1;
break;
}
}
if ( is_listener ) {
continue;
}
r = FD_ISSET( i, &readfds );
w = FD_ISSET( i, &writefds );
if ( r || w ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
" %d%s%s", i,
r ? "r" : "", w ? "w" : "" ));
#else
Debug( LDAP_DEBUG_CONNS, " %d%s%s", i,
r ? "r" : "", w ? "w" : "" );
#endif
}
}
#endif
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2, "\n" ));
#else
Debug( LDAP_DEBUG_CONNS, "\n", 0, 0, 0 );
#endif
#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 ) {
#ifdef LDAP_CONNECTIONLESS
if (slap_listeners[l]->sl_is_udp)
continue;
#endif
is_listener = 1;
break;
}
}
if ( is_listener ) {
continue;
}
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
"slapd_daemon_task: write active on %d\n", wd ));
#else
Debug( LDAP_DEBUG_CONNS,
"daemon: write active on %d\n",
wd, 0, 0 );
#endif
/*
* 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 ) {
#ifdef LDAP_CONNECTIONLESS
if (slap_listeners[l]->sl_is_udp)
continue;
#endif
is_listener = 1;
break;
}
}
if ( is_listener ) {
continue;
}
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_DETAIL2,
"slapd_daemon_task: read activity on %d\n", rd ));
#else
Debug ( LDAP_DEBUG_CONNS,
"daemon: read activity on %d\n", rd, 0, 0 );
#endif
/*
* 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 ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
"slapd_daemon_task: shutdown requested and initiated.\n"));
#else
Debug( LDAP_DEBUG_TRACE,
"daemon: shutdown requested and initiated.\n",
0, 0, 0 );
#endif
} else if ( slapd_shutdown < 0 ) {
#ifdef HAVE_NT_SERVICE_MANAGER
if (slapd_shutdown == -1)
{
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
"slapd_daemon_task: shutdown initiated by Service Manager.\n"));
#else
Debug( LDAP_DEBUG_TRACE,
"daemon: shutdown initiated by Service Manager.\n",
0, 0, 0);
#endif
}
else
#endif
{
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
"slapd_daemon_task: abnormal condition, shutdown initiated.\n" ));
#else
Debug( LDAP_DEBUG_TRACE,
"daemon: abnormal condition, shutdown initiated.\n",
0, 0, 0 );
#endif
}
} else {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
"slapd_daemon_task: no active streams, shutdown initiated.\n" ));
#else
Debug( LDAP_DEBUG_TRACE,
"daemon: no active streams, shutdown initiated.\n",
0, 0, 0 );
#endif
}
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;
}
}
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
"slapd_daemon_task: shutdown waiting for %d threads to terminate.\n",
ldap_pvt_thread_pool_backload(&connection_pool) ));
#else
Debug( LDAP_DEBUG_ANY,
"slapd shutdown: waiting for %d threads to terminate\n",
ldap_pvt_thread_pool_backload(&connection_pool), 0, 0 );
#endif
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 )
{
ldap_pvt_thread_t listener_tid;
/* listener as a separate THREAD */
rc = ldap_pvt_thread_create( &listener_tid,
0, slapd_daemon_task, NULL );
if ( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_ERR,
"slapd_daemon: listener ldap_pvt_thread_create failed (%d).\n", rc ));
#else
Debug( LDAP_DEBUG_ANY,
"listener ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
#endif
return rc;
}
/* wait for the listener thread to complete */
ldap_pvt_thread_join( listener_tid, (void *) NULL );
}
#else
/* experimental code */
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 )
{
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
"slap_sig_shutdown: signal %d\n", sig ));
#else
Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: signal %d\n", sig, 0, 0);
#endif
/*
* 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)
#ifdef NEW_LOGGING
LDAP_LOG(( "connection", LDAP_LEVEL_CRIT,
"slap_sig_shutdown: SIGBREAK ignored.\n" ));
#else
Debug(LDAP_DEBUG_TRACE, "slap_sig_shutdown: SIGBREAK ignored.\n",
0, 0, 0);
#endif
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 );
}
void slapd_add_internal(ber_socket_t s) {
slapd_add(s);
}
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