git.sur5r.net Git - openldap/blob - servers/slapd/main.c

   1 #include "portable.h"
   2
   3 #include <stdio.h>
   4
   5 #include <ac/errno.h>
   6 #include <ac/signal.h>
   7 #include <ac/socket.h>
   8 #include <ac/string.h>
   9 #include <ac/time.h>
  10 #include <ac/unistd.h>
  11
  12 #include "ldapconfig.h"
  13 #include "slap.h"
  14 #include "lutil.h"                      /* Get lutil_detach() */
  15
  16 #ifdef LDAP_SIGCHLD
  17 static void wait4child( int sig );
  18 #endif
  19
  20 /*
  21  * when more than one slapd is running on one machine, each one might have
  22  * it's own LOCAL for syslogging and must have its own pid/args files
  23  */
  24
  25 #ifdef LOG_LOCAL4
  26
  27 #define DEFAULT_SYSLOG_USER  LOG_LOCAL4
  28
  29 typedef struct _str2intDispatch {
  30
  31         char    *stringVal;
  32         int      abbr;
  33         int      intVal;
  34
  35 } STRDISP, *STRDISP_P;
  36
  37
  38 /* table to compute syslog-options to integer */
  39 static STRDISP  syslog_types[] = {
  40
  41     { "LOCAL0",         6, LOG_LOCAL0 },
  42     { "LOCAL1",         6, LOG_LOCAL1 },
  43     { "LOCAL2",         6, LOG_LOCAL2 },
  44     { "LOCAL3",         6, LOG_LOCAL3 },
  45     { "LOCAL4",         6, LOG_LOCAL4 },
  46     { "LOCAL5",         6, LOG_LOCAL5 },
  47     { "LOCAL6",         6, LOG_LOCAL6 },
  48     { "LOCAL7",         6, LOG_LOCAL7 },
  49     NULL
  50
  51 };
  52
  53 static int   cnvt_str2int();
  54
  55 #endif  /* LOG_LOCAL4 */
  56
  57
  58 static void
  59 usage( char *name )
  60 {
  61         fprintf( stderr, "usage: %s [-d ?|debuglevel] [-f configfile] [-p portnumber] [-s sysloglevel]", name );
  62 #ifdef LOG_LOCAL4
  63     fprintf( stderr, " [-l sysloguser]" );
  64 #endif
  65     fprintf( stderr, "\n" );
  66 }
  67
  68 int
  69 main( int argc, char **argv )
  70 {
  71         int             i;
  72         int             inetd = 0;
  73         int             port;
  74         int             udp;
  75         Backend         *be = NULL;
  76         FILE            *fp = NULL;
  77         char            *configfile;
  78         char    *serverName;
  79 #ifdef LOG_LOCAL4
  80         char *optstring = "d:f:ip:s:ul:";
  81         int     syslogUser = DEFAULT_SYSLOG_USER;
  82 #else
  83         char *optstring = "d:f:ip:s:u";
  84 #endif
  85
  86         configfile = SLAPD_DEFAULT_CONFIGFILE;
  87         port = LDAP_PORT;
  88         g_argc = argc;
  89         g_argv = argv;
  90
  91         while ( (i = getopt( argc, argv, optstring )) != EOF ) {
  92                 switch ( i ) {
  93 #ifdef LDAP_DEBUG
  94                 case 'd':       /* turn on debugging */
  95                         if ( optarg[0] == '?' ) {
  96                                 printf( "Debug levels:\n" );
  97                                 printf( "\tLDAP_DEBUG_TRACE\t%d\n",
  98                                     LDAP_DEBUG_TRACE );
  99                                 printf( "\tLDAP_DEBUG_PACKETS\t%d\n",
 100                                     LDAP_DEBUG_PACKETS );
 101                                 printf( "\tLDAP_DEBUG_ARGS\t\t%d\n",
 102                                     LDAP_DEBUG_ARGS );
 103                                 printf( "\tLDAP_DEBUG_CONNS\t%d\n",
 104                                     LDAP_DEBUG_CONNS );
 105                                 printf( "\tLDAP_DEBUG_BER\t\t%d\n",
 106                                     LDAP_DEBUG_BER );
 107                                 printf( "\tLDAP_DEBUG_FILTER\t%d\n",
 108                                     LDAP_DEBUG_FILTER );
 109                                 printf( "\tLDAP_DEBUG_CONFIG\t%d\n",
 110                                     LDAP_DEBUG_CONFIG );
 111                                 printf( "\tLDAP_DEBUG_ACL\t\t%d\n",
 112                                     LDAP_DEBUG_ACL );
 113                                 printf( "\tLDAP_DEBUG_STATS\t%d\n",
 114                                     LDAP_DEBUG_STATS );
 115                                 printf( "\tLDAP_DEBUG_STATS2\t%d\n",
 116                                     LDAP_DEBUG_STATS2 );
 117                                 printf( "\tLDAP_DEBUG_SHELL\t%d\n",
 118                                     LDAP_DEBUG_SHELL );
 119                                 printf( "\tLDAP_DEBUG_PARSE\t%d\n",
 120                                     LDAP_DEBUG_PARSE );
 121                                 printf( "\tLDAP_DEBUG_ANY\t\t%d\n",
 122                                     LDAP_DEBUG_ANY );
 123                                 exit( 0 );
 124                         } else {
 125                                 ldap_debug |= atoi( optarg );
 126                                 lber_debug = (ldap_debug & LDAP_DEBUG_BER);
 127                         }
 128                         break;
 129 #else
 130                 case 'd':       /* turn on debugging */
 131                         fprintf( stderr,
 132                             "must compile with LDAP_DEBUG for debugging\n" );
 133                         break;
 134 #endif
 135
 136                 case 'f':       /* read config file */
 137                         configfile = ch_strdup( optarg );
 138                         break;
 139
 140                 case 'i':       /* run from inetd */
 141                         inetd = 1;
 142                         break;
 143
 144                 case 'p':       /* port on which to listen */
 145                         port = atoi( optarg );
 146                         break;
 147
 148                 case 's':       /* set syslog level */
 149                         ldap_syslog = atoi( optarg );
 150                         break;
 151
 152 #ifdef LOG_LOCAL4
 153                 case 'l':       /* set syslog local user */
 154                         syslogUser = cnvt_str2int( optarg, syslog_types,
 155                                            DEFAULT_SYSLOG_USER );
 156                         break;
 157 #endif
 158
 159                 case 'u':       /* do udp */
 160                         udp = 1;
 161                         break;
 162
 163                 default:
 164                         usage( argv[0] );
 165                         exit( 1 );
 166                 }
 167         }
 168
 169         Debug( LDAP_DEBUG_TRACE, "%s", Versionstr, 0, 0 );
 170
 171         if ( (serverName = strrchr( argv[0], '/' )) == NULL ) {
 172                 serverName = ch_strdup( argv[0] );
 173         } else {
 174                 serverName = ch_strdup( serverName + 1 );
 175         }
 176
 177         if ( ! inetd ) {
 178                 /* pre-open config file before detach in case it is a relative path */
 179                 fp = fopen( configfile, "r" );
 180 #ifdef LDAP_DEBUG
 181                 lutil_detach( ldap_debug, 0 );
 182 #else
 183                 lutil_detach( 0, 0 );
 184 #endif
 185         }
 186
 187 #ifdef LOG_LOCAL4
 188         openlog( serverName, OPENLOG_OPTIONS, syslogUser );
 189 #else
 190         openlog( serverName, OPENLOG_OPTIONS );
 191 #endif
 192
 193         init();
 194         read_config( configfile, &be, fp );
 195
 196         if ( ! inetd ) {
 197                 int             status;
 198
 199                 (void) SIGNAL( SIGPIPE, SIG_IGN );
 200                 (void) SIGNAL( LDAP_SIGUSR1, slap_do_nothing );
 201                 (void) SIGNAL( LDAP_SIGUSR2, slap_set_shutdown );
 202                 (void) SIGNAL( SIGTERM, slap_set_shutdown );
 203                 (void) SIGNAL( SIGINT, slap_set_shutdown );
 204                 (void) SIGNAL( SIGHUP, slap_set_shutdown );
 205 #ifdef LDAP_SIGCHLD
 206                 (void) SIGNAL( LDAP_SIGCHLD, wait4child );
 207 #endif
 208
 209                 time( &starttime );
 210
 211                 if ( status = ldap_pvt_thread_create( &listener_tid, 0,
 212                         slapd_daemon, (void *) port ) != 0 )
 213                 {
 214                         Debug( LDAP_DEBUG_ANY,
 215                             "listener ldap_pvt_thread_create failed (%d)\n", status, 0, 0 );
 216                         exit( 1 );
 217                 }
 218
 219                 ldap_pvt_thread_join( listener_tid, (void *) NULL );
 220
 221                 return 0;
 222
 223         } else {
 224                 Connection              c;
 225                 Operation               *o;
 226                 BerElement              ber;
 227                 unsigned long           len, tag;
 228                 long                    msgid;
 229                 int                     flen;
 230                 struct sockaddr_in      from;
 231                 struct hostent          *hp;
 232
 233                 c.c_dn = NULL;
 234                 c.c_cdn = NULL;
 235                 c.c_ops = NULL;
 236                 c.c_sb.sb_sd = 0;
 237                 c.c_sb.sb_options = 0;
 238                 c.c_sb.sb_naddr = udp ? 1 : 0;
 239                 c.c_sb.sb_ber.ber_buf = NULL;
 240                 c.c_sb.sb_ber.ber_ptr = NULL;
 241                 c.c_sb.sb_ber.ber_end = NULL;
 242                 ldap_pvt_thread_mutex_init( &c.c_dnmutex );
 243                 ldap_pvt_thread_mutex_init( &c.c_opsmutex );
 244                 ldap_pvt_thread_mutex_init( &c.c_pdumutex );
 245 #ifdef notdefcldap
 246                 c.c_sb.sb_addrs = (void **) saddrlist;
 247                 c.c_sb.sb_fromaddr = &faddr;
 248                 c.c_sb.sb_useaddr = saddrlist[ 0 ] = &saddr;
 249 #endif
 250                 flen = sizeof(from);
 251                 if ( getpeername( 0, (struct sockaddr *) &from, &flen ) == 0 ) {
 252 #ifdef SLAPD_RLOOKUPS
 253                         hp = gethostbyaddr( (char *) &(from.sin_addr.s_addr),
 254                             sizeof(from.sin_addr.s_addr), AF_INET );
 255 #else
 256                         hp = NULL;
 257 #endif
 258
 259                         Debug( LDAP_DEBUG_ARGS, "connection from %s (%s)\n",
 260                             hp == NULL ? "unknown" : hp->h_name,
 261                             inet_ntoa( from.sin_addr ), 0 );
 262
 263                         c.c_addr = inet_ntoa( from.sin_addr );
 264                         c.c_domain = ch_strdup( hp == NULL ? "" : hp->h_name );
 265                 } else {
 266                         Debug( LDAP_DEBUG_ARGS, "connection from unknown\n",
 267                             0, 0, 0 );
 268                 }
 269
 270                 ber_init( &ber, 0 );
 271                 while ( (tag = ber_get_next( &c.c_sb, &len, &ber ))
 272                     == LDAP_TAG_MESSAGE ) {
 273                         ldap_pvt_thread_mutex_lock( &currenttime_mutex );
 274                         time( &currenttime );
 275                         ldap_pvt_thread_mutex_unlock( &currenttime_mutex );
 276
 277                         if ( (tag = ber_get_int( &ber, &msgid ))
 278                             != LDAP_TAG_MSGID ) {
 279                                 /* log and send error */
 280                                 Debug( LDAP_DEBUG_ANY,
 281                                    "ber_get_int returns 0x%lx\n", tag, 0, 0 );
 282                                 ber_free( &ber, 1 );
 283                                 return 1;
 284                         }
 285
 286                         if ( (tag = ber_peek_tag( &ber, &len ))
 287                             == LBER_ERROR ) {
 288                                 /* log, close and send error */
 289                                 Debug( LDAP_DEBUG_ANY,
 290                                    "ber_peek_tag returns 0x%lx\n", tag, 0, 0 );
 291                                 ber_free( &ber, 1 );
 292                                 close( c.c_sb.sb_sd );
 293                                 c.c_sb.sb_sd = -1;
 294                                 return 1;
 295                         }
 296
 297                         connection_activity( &c );
 298
 299                         ber_free( &ber, 1 );
 300                 }
 301         }
 302         return 1;
 303 }
 304
 305
 306 #ifdef LDAP_SIGCHLD
 307
 308 /*
 309  *  Catch and discard terminated child processes, to avoid zombies.
 310  */
 311
 312 static void
 313 wait4child( int sig )
 314 {
 315     int save_errno = errno;
 316
 317 #ifdef WNOHANG
 318     errno = 0;
 319 #ifdef HAVE_WAITPID
 320     while ( waitpid( (pid_t)-1, NULL, WNOHANG ) >= 0 || errno == EINTR )
 321         ;       /* NULL */
 322 #else
 323     while ( wait3( NULL, WNOHANG, NULL ) >= 0 || errno == EINTR )
 324         ;       /* NULL */
 325 #endif
 326 #else
 327     (void) wait( NULL );
 328 #endif
 329     (void) SIGNAL( sig, wait4child );
 330     errno = save_errno;
 331 }
 332
 333 #endif /* SIGCHLD || SIGCLD */
 334
 335
 336 #ifdef LOG_LOCAL4
 337
 338 /*
 339  *  Convert a string to an integer by means of a dispatcher table
 340  *  if the string is not in the table return the default
 341  */
 342
 343 static int
 344 cnvt_str2int (stringVal, dispatcher, defaultVal)
 345 char      *stringVal;
 346 STRDISP_P  dispatcher;
 347 int        defaultVal;
 348 {
 349     int        retVal = defaultVal;
 350     STRDISP_P  disp;
 351
 352     for (disp = dispatcher; disp->stringVal; disp++) {
 353
 354         if (!strncasecmp (stringVal, disp->stringVal, disp->abbr)) {
 355
 356             retVal = disp->intVal;
 357             break;
 358
 359         }
 360     }
 361
 362     return (retVal);
 363
 364 } /* cnvt_str2int */
 365
 366 #endif  /* LOG_LOCAL4 */
 367