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

   1 /* result.c - routines to send ldap results, errors, and referrals */
   2
   3 #include "portable.h"
   4
   5 #include <stdio.h>
   6
   7 #include <ac/socket.h>
   8 #include <ac/errno.h>
   9 #include <ac/signal.h>
  10 #include <ac/string.h>
  11 #include <ac/time.h>
  12 #include <ac/unistd.h>          /* get close() */
  13
  14 #include "slap.h"
  15
  16 /* we need LBER internals */
  17 #include "../../libraries/liblber/lber-int.h"
  18
  19 static void
  20 send_ldap_result2(
  21     Connection  *conn,
  22     Operation   *op,
  23     ber_int_t   err,
  24     char        *matched,
  25     char        *text,
  26     int         nentries
  27 )
  28 {
  29         BerElement      *ber;
  30         int             rc;
  31         ber_tag_t       tag;
  32         ber_len_t       bytes;
  33
  34         if ( err == LDAP_PARTIAL_RESULTS && (text == NULL || *text == '\0') )
  35                 err = LDAP_NO_SUCH_OBJECT;
  36
  37         Debug( LDAP_DEBUG_TRACE, "send_ldap_result %d:%s:%s\n", err,
  38                 matched ?  matched : "",
  39                 text ? text : "" );
  40
  41         switch ( op->o_tag ) {
  42         case LBER_DEFAULT:
  43                 tag = LBER_SEQUENCE;
  44                 break;
  45
  46         case LDAP_REQ_SEARCH:
  47                 tag = LDAP_RES_SEARCH_RESULT;
  48                 break;
  49
  50         case LDAP_REQ_DELETE:
  51                 tag = LDAP_RES_DELETE;
  52                 break;
  53
  54         default:
  55                 tag = op->o_tag + 1;
  56                 break;
  57         }
  58
  59
  60         ber = ber_alloc_t( LBER_USE_DER );
  61
  62         if ( ber == NULL ) {
  63                 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
  64                 return;
  65         }
  66
  67 #ifdef LDAP_CONNECTIONLESS
  68         if ( op->o_cldap ) {
  69                 rc = ber_printf( ber, "{is{t{ess}}}", op->o_msgid, "", tag,
  70                     err, matched ? matched : "", text ? text : "" );
  71         } else
  72 #endif
  73         {
  74                 rc = ber_printf( ber, "{it{ess}}", op->o_msgid, tag, err,
  75                     matched ? matched : "", text ? text : "" );
  76         }
  77
  78         if ( rc == -1 ) {
  79                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
  80                 return;
  81         }
  82
  83         /* write only one pdu at a time - wait til it's our turn */
  84         ldap_pvt_thread_mutex_lock( &conn->c_write_mutex );
  85
  86         /* lock the connection */
  87         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
  88
  89         /* write the pdu */
  90         bytes = ber_pvt_ber_bytes( ber );
  91
  92         while ( 1 ) {
  93                 int err;
  94
  95                 if ( connection_state_closing( conn ) ) {
  96                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
  97                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
  98                         return;
  99                 }
 100
 101                 if ( ber_flush( conn->c_sb, ber, 1 ) == 0 ) {
 102                         break;
 103                 }
 104
 105                 err = errno;
 106
 107                 /*
 108                  * we got an error.  if it's ewouldblock, we need to
 109                  * wait on the socket being writable.  otherwise, figure
 110                  * it's a hard error and return.
 111                  */
 112
 113                 Debug( LDAP_DEBUG_CONNS, "ber_flush failed errno %d msg (%s)\n",
 114                     err, err > -1 && err < sys_nerr ? sys_errlist[err]
 115                     : "unknown", 0 );
 116
 117                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 118                         connection_closing( conn );
 119
 120                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 121                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 122                         return;
 123                 }
 124
 125                 /* wait for socket to be write-ready */
 126                 conn->c_writewaiter = 1;
 127                 slapd_set_write( ber_pvt_sb_get_desc( conn->c_sb ), 1 );
 128
 129                 ldap_pvt_thread_cond_wait( &conn->c_write_cv, &conn->c_mutex );
 130                 conn->c_writewaiter = 0;
 131         }
 132
 133         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 134         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 135
 136         ldap_pvt_thread_mutex_lock( &num_sent_mutex );
 137         num_bytes_sent += bytes;
 138         ldap_pvt_thread_mutex_unlock( &num_sent_mutex );
 139
 140         Statslog( LDAP_DEBUG_STATS,
 141             "conn=%ld op=%ld RESULT err=%ld tag=%lu nentries=%d\n",
 142                 (long) conn->c_connid, (long) op->o_opid,
 143                 (long) err, (long) tag, nentries );
 144
 145         return;
 146 }
 147
 148 void
 149 send_ldap_result(
 150     Connection  *conn,
 151     Operation   *op,
 152     ber_int_t   err,
 153     char        *matched,
 154     char        *text
 155 )
 156 {
 157 #ifdef LDAP_CONNECTIONLESS
 158         if ( op->o_cldap ) {
 159                 ber_pvt_sb_udp_set_dst( &conn->c_sb, &op->o_clientaddr );
 160                 Debug( LDAP_DEBUG_TRACE, "UDP response to %s port %d\n",
 161                     inet_ntoa(((struct sockaddr_in *)
 162                     &op->o_clientaddr)->sin_addr ),
 163                     ((struct sockaddr_in *) &op->o_clientaddr)->sin_port,
 164                     0 );
 165         }
 166 #endif
 167         send_ldap_result2( conn, op, err, matched, text, 0 );
 168 }
 169
 170 void
 171 send_ldap_search_result(
 172     Connection  *conn,
 173     Operation   *op,
 174     ber_int_t   err,
 175     char        *matched,
 176     char        *text,
 177     int         nentries
 178 )
 179 {
 180         send_ldap_result2( conn, op, err, matched, text, nentries );
 181 }
 182
 183 int
 184 send_search_entry(
 185     Backend     *be,
 186     Connection  *conn,
 187     Operation   *op,
 188     Entry       *e,
 189     char        **attrs,
 190     int         attrsonly
 191 )
 192 {
 193         BerElement      *ber;
 194         Attribute       *a;
 195         int             i, rc=-1, bytes;
 196         struct acl      *acl;
 197         char            *edn;
 198
 199         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry (%s)\n", e->e_dn, 0, 0 );
 200
 201         if ( ! access_allowed( be, conn, op, e,
 202                 "entry", NULL, ACL_READ ) )
 203         {
 204                 Debug( LDAP_DEBUG_ACL, "acl: access to entry not allowed\n",
 205                     0, 0, 0 );
 206                 return( 1 );
 207         }
 208
 209         edn = e->e_ndn;
 210
 211         ber = ber_alloc_t( LBER_USE_DER );
 212
 213         if ( ber == NULL ) {
 214                 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
 215                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL,
 216                         "ber_alloc" );
 217                 goto error_return;
 218         }
 219
 220         rc = ber_printf( ber, "{it{s{", op->o_msgid,
 221                 LDAP_RES_SEARCH_ENTRY, e->e_dn );
 222
 223         if ( rc == -1 ) {
 224                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 225                 ber_free( ber, 1 );
 226                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL,
 227                     "ber_printf dn" );
 228                 goto error_return;
 229         }
 230
 231         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 232                 regmatch_t       matches[MAXREMATCHES];
 233
 234                 if ( attrs != NULL && ! charray_inlist( attrs, a->a_type ) ) {
 235                         continue;
 236                 }
 237
 238                 /* the lastmod attributes are ignored by ACL checking */
 239                 if ( strcasecmp( a->a_type, "modifiersname" ) == 0 ||
 240                         strcasecmp( a->a_type, "modifytimestamp" ) == 0 ||
 241                         strcasecmp( a->a_type, "creatorsname" ) == 0 ||
 242                         strcasecmp( a->a_type, "createtimestamp" ) == 0 )
 243                 {
 244                         Debug( LDAP_DEBUG_ACL, "LASTMOD attribute: %s access DEFAULT\n",
 245                                 a->a_type, 0, 0 );
 246                         acl = NULL;
 247                 } else {
 248                         acl = acl_get_applicable( be, op, e, a->a_type,
 249                                 MAXREMATCHES, matches );
 250                 }
 251
 252                 if ( ! acl_access_allowed( acl, be, conn, e,
 253                         NULL, op, ACL_READ, edn, matches ) )
 254                 {
 255                         continue;
 256                 }
 257
 258                 if (( rc = ber_printf( ber, "{s[" /*]}*/ , a->a_type )) == -1 ) {
 259                         Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 260                         ber_free( ber, 1 );
 261                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 262                             NULL, "ber_printf type" );
 263                         goto error_return;
 264                 }
 265
 266                 if ( ! attrsonly ) {
 267                         for ( i = 0; a->a_vals[i] != NULL; i++ ) {
 268                                 if ( a->a_syntax & SYNTAX_DN &&
 269                                         ! acl_access_allowed( acl, be, conn, e, a->a_vals[i], op,
 270                                                 ACL_READ, edn, matches) )
 271                                 {
 272                                         continue;
 273                                 }
 274
 275                                 if (( rc = ber_printf( ber, "O", a->a_vals[i] )) == -1 ) {
 276                                         Debug( LDAP_DEBUG_ANY,
 277                                             "ber_printf failed\n", 0, 0, 0 );
 278                                         ber_free( ber, 1 );
 279                                         send_ldap_result( conn, op,
 280                                             LDAP_OPERATIONS_ERROR, NULL,
 281                                             "ber_printf value" );
 282                                         goto error_return;
 283                                 }
 284                         }
 285                 }
 286
 287                 if (( rc = ber_printf( ber, /*{[*/ "]}" )) == -1 ) {
 288                         Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 289                         ber_free( ber, 1 );
 290                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 291                             NULL, "ber_printf type end" );
 292                         goto error_return;
 293                 }
 294         }
 295
 296         rc = ber_printf( ber, /*{{{*/ "}}}" );
 297
 298         if ( rc == -1 ) {
 299                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 300                 ber_free( ber, 1 );
 301                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL,
 302                     "ber_printf entry end" );
 303                 return( 1 );
 304         }
 305
 306         bytes = ber_pvt_ber_bytes( ber );
 307
 308         /* write only one pdu at a time - wait til it's our turn */
 309         ldap_pvt_thread_mutex_lock( &conn->c_write_mutex );
 310
 311         /* lock the connection */
 312         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 313
 314         /* write the pdu */
 315         while( 1 ) {
 316                 int err;
 317
 318                 if ( connection_state_closing( conn ) ) {
 319                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 320                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 321                         return 0;
 322                 }
 323
 324                 if ( ber_flush( conn->c_sb, ber, 1 ) == 0 ) {
 325                         break;
 326                 }
 327
 328                 err = errno;
 329
 330                 /*
 331                  * we got an error.  if it's ewouldblock, we need to
 332                  * wait on the socket being writable.  otherwise, figure
 333                  * it's a hard error and return.
 334                  */
 335
 336                 Debug( LDAP_DEBUG_CONNS, "ber_flush failed errno %d msg (%s)\n",
 337                     err, err > -1 && err < sys_nerr ? sys_errlist[err]
 338                     : "unknown", 0 );
 339
 340                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 341                         connection_closing( conn );
 342
 343                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 344                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 345                         return( -1 );
 346                 }
 347
 348                 /* wait for socket to be write-ready */
 349                 conn->c_writewaiter = 1;
 350                 slapd_set_write( ber_pvt_sb_get_desc( conn->c_sb ), 1 );
 351
 352                 ldap_pvt_thread_cond_wait( &conn->c_write_cv, &conn->c_mutex );
 353                 conn->c_writewaiter = 0;
 354         }
 355
 356         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 357         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 358
 359         ldap_pvt_thread_mutex_lock( &num_sent_mutex );
 360         num_bytes_sent += bytes;
 361         num_entries_sent++;
 362         ldap_pvt_thread_mutex_unlock( &num_sent_mutex );
 363
 364         Statslog( LDAP_DEBUG_STATS2, "conn=%ld op=%ld ENTRY dn=\"%s\"\n",
 365             (long) conn->c_connid, (long) op->o_opid, e->e_dn, 0, 0 );
 366
 367         Debug( LDAP_DEBUG_TRACE, "<= send_search_entry\n", 0, 0, 0 );
 368
 369         rc = 0;
 370
 371 error_return:;
 372         return( rc );
 373 }
 374
 375 int
 376 str2result(
 377     char        *s,
 378     int         *code,
 379     char        **matched,
 380     char        **info
 381 )
 382 {
 383         int     rc;
 384         char    *c;
 385
 386         *code = LDAP_SUCCESS;
 387         *matched = NULL;
 388         *info = NULL;
 389
 390         if ( strncasecmp( s, "RESULT", 6 ) != 0 ) {
 391                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
 392                     s, 0, 0 );
 393
 394                 return( -1 );
 395         }
 396
 397         rc = 0;
 398         while ( (s = strchr( s, '\n' )) != NULL ) {
 399                 *s++ = '\0';
 400                 if ( *s == '\0' ) {
 401                         break;
 402                 }
 403                 if ( (c = strchr( s, ':' )) != NULL ) {
 404                         c++;
 405                 }
 406
 407                 if ( strncasecmp( s, "code", 4 ) == 0 ) {
 408                         if ( c != NULL ) {
 409                                 *code = atoi( c );
 410                         }
 411                 } else if ( strncasecmp( s, "matched", 7 ) == 0 ) {
 412                         if ( c != NULL ) {
 413                                 *matched = c;
 414                         }
 415                 } else if ( strncasecmp( s, "info", 4 ) == 0 ) {
 416                         if ( c != NULL ) {
 417                                 *info = c;
 418                         }
 419                 } else {
 420                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
 421                             s, 0, 0 );
 422                         rc = -1;
 423                 }
 424         }
 425
 426         return( rc );
 427 }