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         assert( !LDAP_API_ERROR( err ) );
  35
  36         if ( err == LDAP_PARTIAL_RESULTS && (text == NULL || *text == '\0') )
  37                 err = LDAP_NO_SUCH_OBJECT;
  38
  39         Debug( LDAP_DEBUG_TRACE, "send_ldap_result %d:%s:%s\n", err,
  40                 matched ?  matched : "",
  41                 text ? text : "" );
  42
  43         switch ( op->o_tag ) {
  44         case LBER_DEFAULT:
  45                 tag = LBER_SEQUENCE;
  46                 break;
  47
  48         case LDAP_REQ_SEARCH:
  49                 tag = LDAP_RES_SEARCH_RESULT;
  50                 break;
  51
  52         case LDAP_REQ_DELETE:
  53                 tag = LDAP_RES_DELETE;
  54                 break;
  55
  56         default:
  57                 tag = op->o_tag + 1;
  58                 break;
  59         }
  60
  61
  62         ber = ber_alloc_t( LBER_USE_DER );
  63
  64         if ( ber == NULL ) {
  65                 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
  66                 return;
  67         }
  68
  69 #ifdef LDAP_CONNECTIONLESS
  70         if ( op->o_cldap ) {
  71                 rc = ber_printf( ber, "{is{t{ess}}}", op->o_msgid, "", tag,
  72                     err, matched ? matched : "", text ? text : "" );
  73         } else
  74 #endif
  75         {
  76                 rc = ber_printf( ber, "{it{ess}}", op->o_msgid, tag, err,
  77                     matched ? matched : "", text ? text : "" );
  78         }
  79
  80         if ( rc == -1 ) {
  81                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
  82                 return;
  83         }
  84
  85         /* write only one pdu at a time - wait til it's our turn */
  86         ldap_pvt_thread_mutex_lock( &conn->c_write_mutex );
  87
  88         /* lock the connection */
  89         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
  90
  91         /* write the pdu */
  92         bytes = ber_pvt_ber_bytes( ber );
  93
  94         while ( 1 ) {
  95                 int err;
  96
  97                 if ( connection_state_closing( conn ) ) {
  98                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
  99                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 100                         return;
 101                 }
 102
 103                 if ( ber_flush( conn->c_sb, ber, 1 ) == 0 ) {
 104                         break;
 105                 }
 106
 107                 err = errno;
 108
 109                 /*
 110                  * we got an error.  if it's ewouldblock, we need to
 111                  * wait on the socket being writable.  otherwise, figure
 112                  * it's a hard error and return.
 113                  */
 114
 115                 Debug( LDAP_DEBUG_CONNS, "ber_flush failed errno %d msg (%s)\n",
 116                     err, err > -1 && err < sys_nerr ? sys_errlist[err]
 117                     : "unknown", 0 );
 118
 119                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 120                         connection_closing( conn );
 121
 122                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 123                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 124                         return;
 125                 }
 126
 127                 /* wait for socket to be write-ready */
 128                 conn->c_writewaiter = 1;
 129                 slapd_set_write( ber_pvt_sb_get_desc( conn->c_sb ), 1 );
 130
 131                 ldap_pvt_thread_cond_wait( &conn->c_write_cv, &conn->c_mutex );
 132                 conn->c_writewaiter = 0;
 133         }
 134
 135         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 136         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 137
 138         ldap_pvt_thread_mutex_lock( &num_sent_mutex );
 139         num_bytes_sent += bytes;
 140         ldap_pvt_thread_mutex_unlock( &num_sent_mutex );
 141
 142         Statslog( LDAP_DEBUG_STATS,
 143             "conn=%ld op=%ld RESULT err=%ld tag=%lu nentries=%d\n",
 144                 (long) conn->c_connid, (long) op->o_opid,
 145                 (long) err, (long) tag, nentries );
 146
 147         return;
 148 }
 149
 150 void
 151 send_ldap_result(
 152     Connection  *conn,
 153     Operation   *op,
 154     ber_int_t   err,
 155     char        *matched,
 156     char        *text
 157 )
 158 {
 159         assert( !LDAP_API_ERROR( err ) );
 160
 161 #ifdef LDAP_CONNECTIONLESS
 162         if ( op->o_cldap ) {
 163                 ber_pvt_sb_udp_set_dst( &conn->c_sb, &op->o_clientaddr );
 164                 Debug( LDAP_DEBUG_TRACE, "UDP response to %s port %d\n",
 165                     inet_ntoa(((struct sockaddr_in *)
 166                     &op->o_clientaddr)->sin_addr ),
 167                     ((struct sockaddr_in *) &op->o_clientaddr)->sin_port,
 168                     0 );
 169         }
 170 #endif
 171         send_ldap_result2( conn, op, err, matched, text, 0 );
 172 }
 173
 174 void
 175 send_ldap_search_result(
 176     Connection  *conn,
 177     Operation   *op,
 178     ber_int_t   err,
 179     char        *matched,
 180     char        *text,
 181     int         nentries
 182 )
 183 {
 184         send_ldap_result2( conn, op, err, matched, text, nentries );
 185 }
 186
 187 int
 188 send_search_entry(
 189     Backend     *be,
 190     Connection  *conn,
 191     Operation   *op,
 192     Entry       *e,
 193     char        **attrs,
 194     int         attrsonly
 195 )
 196 {
 197         BerElement      *ber;
 198         Attribute       *a;
 199         int             i, rc=-1, bytes;
 200         struct acl      *acl;
 201         char            *edn;
 202
 203         Debug( LDAP_DEBUG_TRACE, "=> send_search_entry (%s)\n", e->e_dn, 0, 0 );
 204
 205         if ( ! access_allowed( be, conn, op, e,
 206                 "entry", NULL, ACL_READ ) )
 207         {
 208                 Debug( LDAP_DEBUG_ACL, "acl: access to entry not allowed\n",
 209                     0, 0, 0 );
 210                 return( 1 );
 211         }
 212
 213         edn = e->e_ndn;
 214
 215         ber = ber_alloc_t( LBER_USE_DER );
 216
 217         if ( ber == NULL ) {
 218                 Debug( LDAP_DEBUG_ANY, "ber_alloc failed\n", 0, 0, 0 );
 219                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL,
 220                         "ber_alloc" );
 221                 goto error_return;
 222         }
 223
 224         rc = ber_printf( ber, "{it{s{", op->o_msgid,
 225                 LDAP_RES_SEARCH_ENTRY, e->e_dn );
 226
 227         if ( rc == -1 ) {
 228                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 229                 ber_free( ber, 1 );
 230                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL,
 231                     "ber_printf dn" );
 232                 goto error_return;
 233         }
 234
 235         for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 236                 regmatch_t       matches[MAXREMATCHES];
 237
 238                 if ( attrs == NULL ) {
 239                         /* all addrs request, skip operational attributes */
 240                         if( oc_check_operational( a->a_type )) {
 241                                 continue;
 242                         }
 243                 } else {
 244                         /* specific addrs requested */
 245                         if ( !charray_inlist( attrs, a->a_type )) {
 246                                 continue;
 247                         }
 248                 }
 249
 250                 acl = acl_get_applicable( be, op, e, a->a_type,
 251                         MAXREMATCHES, matches );
 252
 253                 if ( ! acl_access_allowed( acl, be, conn, e,
 254                         NULL, op, ACL_READ, edn, matches ) )
 255                 {
 256                         continue;
 257                 }
 258
 259                 if (( rc = ber_printf( ber, "{s[" /*]}*/ , a->a_type )) == -1 ) {
 260                         Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 261                         ber_free( ber, 1 );
 262                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 263                             NULL, "ber_printf type" );
 264                         goto error_return;
 265                 }
 266
 267                 if ( ! attrsonly ) {
 268                         for ( i = 0; a->a_vals[i] != NULL; i++ ) {
 269                                 if ( a->a_syntax & SYNTAX_DN &&
 270                                         ! acl_access_allowed( acl, be, conn, e, a->a_vals[i], op,
 271                                                 ACL_READ, edn, matches) )
 272                                 {
 273                                         continue;
 274                                 }
 275
 276                                 if (( rc = ber_printf( ber, "O", a->a_vals[i] )) == -1 ) {
 277                                         Debug( LDAP_DEBUG_ANY,
 278                                             "ber_printf failed\n", 0, 0, 0 );
 279                                         ber_free( ber, 1 );
 280                                         send_ldap_result( conn, op,
 281                                             LDAP_OPERATIONS_ERROR, NULL,
 282                                             "ber_printf value" );
 283                                         goto error_return;
 284                                 }
 285                         }
 286                 }
 287
 288                 if (( rc = ber_printf( ber, /*{[*/ "]}" )) == -1 ) {
 289                         Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 290                         ber_free( ber, 1 );
 291                         send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
 292                             NULL, "ber_printf type end" );
 293                         goto error_return;
 294                 }
 295         }
 296
 297         rc = ber_printf( ber, /*{{{*/ "}}}" );
 298
 299         if ( rc == -1 ) {
 300                 Debug( LDAP_DEBUG_ANY, "ber_printf failed\n", 0, 0, 0 );
 301                 ber_free( ber, 1 );
 302                 send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, NULL,
 303                     "ber_printf entry end" );
 304                 return( 1 );
 305         }
 306
 307         bytes = ber_pvt_ber_bytes( ber );
 308
 309         /* write only one pdu at a time - wait til it's our turn */
 310         ldap_pvt_thread_mutex_lock( &conn->c_write_mutex );
 311
 312         /* lock the connection */
 313         ldap_pvt_thread_mutex_lock( &conn->c_mutex );
 314
 315         /* write the pdu */
 316         while( 1 ) {
 317                 int err;
 318
 319                 if ( connection_state_closing( conn ) ) {
 320                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 321                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 322                         return 0;
 323                 }
 324
 325                 if ( ber_flush( conn->c_sb, ber, 1 ) == 0 ) {
 326                         break;
 327                 }
 328
 329                 err = errno;
 330
 331                 /*
 332                  * we got an error.  if it's ewouldblock, we need to
 333                  * wait on the socket being writable.  otherwise, figure
 334                  * it's a hard error and return.
 335                  */
 336
 337                 Debug( LDAP_DEBUG_CONNS, "ber_flush failed errno %d msg (%s)\n",
 338                     err, err > -1 && err < sys_nerr ? sys_errlist[err]
 339                     : "unknown", 0 );
 340
 341                 if ( err != EWOULDBLOCK && err != EAGAIN ) {
 342                         connection_closing( conn );
 343
 344                         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 345                         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 346                         return( -1 );
 347                 }
 348
 349                 /* wait for socket to be write-ready */
 350                 conn->c_writewaiter = 1;
 351                 slapd_set_write( ber_pvt_sb_get_desc( conn->c_sb ), 1 );
 352
 353                 ldap_pvt_thread_cond_wait( &conn->c_write_cv, &conn->c_mutex );
 354                 conn->c_writewaiter = 0;
 355         }
 356
 357         ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
 358         ldap_pvt_thread_mutex_unlock( &conn->c_write_mutex );
 359
 360         ldap_pvt_thread_mutex_lock( &num_sent_mutex );
 361         num_bytes_sent += bytes;
 362         num_entries_sent++;
 363         ldap_pvt_thread_mutex_unlock( &num_sent_mutex );
 364
 365         Statslog( LDAP_DEBUG_STATS2, "conn=%ld op=%ld ENTRY dn=\"%s\"\n",
 366             (long) conn->c_connid, (long) op->o_opid, e->e_dn, 0, 0 );
 367
 368         Debug( LDAP_DEBUG_TRACE, "<= send_search_entry\n", 0, 0, 0 );
 369
 370         rc = 0;
 371
 372 error_return:;
 373         return( rc );
 374 }
 375
 376 int
 377 str2result(
 378     char        *s,
 379     int         *code,
 380     char        **matched,
 381     char        **info
 382 )
 383 {
 384         int     rc;
 385         char    *c;
 386
 387         *code = LDAP_SUCCESS;
 388         *matched = NULL;
 389         *info = NULL;
 390
 391         if ( strncasecmp( s, "RESULT", 6 ) != 0 ) {
 392                 Debug( LDAP_DEBUG_ANY, "str2result (%s) expecting \"RESULT\"\n",
 393                     s, 0, 0 );
 394
 395                 return( -1 );
 396         }
 397
 398         rc = 0;
 399         while ( (s = strchr( s, '\n' )) != NULL ) {
 400                 *s++ = '\0';
 401                 if ( *s == '\0' ) {
 402                         break;
 403                 }
 404                 if ( (c = strchr( s, ':' )) != NULL ) {
 405                         c++;
 406                 }
 407
 408                 if ( strncasecmp( s, "code", 4 ) == 0 ) {
 409                         if ( c != NULL ) {
 410                                 *code = atoi( c );
 411                         }
 412                 } else if ( strncasecmp( s, "matched", 7 ) == 0 ) {
 413                         if ( c != NULL ) {
 414                                 *matched = c;
 415                         }
 416                 } else if ( strncasecmp( s, "info", 4 ) == 0 ) {
 417                         if ( c != NULL ) {
 418                                 *info = c;
 419                         }
 420                 } else {
 421                         Debug( LDAP_DEBUG_ANY, "str2result (%s) unknown\n",
 422                             s, 0, 0 );
 423                         rc = -1;
 424                 }
 425         }
 426
 427         return( rc );
 428 }