git.sur5r.net Git - openldap/blob - libraries/libldap/error.c

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2005 The OpenLDAP Foundation.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15 /* Portions Copyright (C) The Internet Society (1997)
  16  * ASN.1 fragments are from RFC 2251; see RFC for full legal notices.
  17  */
  18
  19 #include "portable.h"
  20
  21 #include <stdio.h>
  22
  23 #include <ac/stdlib.h>
  24
  25 #include <ac/socket.h>
  26 #include <ac/string.h>
  27 #include <ac/time.h>
  28
  29 #include "ldap-int.h"
  30
  31 struct ldaperror {
  32         int     e_code;
  33         char *e_reason;
  34 };
  35
  36 static struct ldaperror ldap_builtin_errlist[] = {
  37         {LDAP_SUCCESS,                                  N_("Success")},
  38         {LDAP_OPERATIONS_ERROR,                 N_("Operations error")},
  39         {LDAP_PROTOCOL_ERROR,                   N_("Protocol error")},
  40         {LDAP_TIMELIMIT_EXCEEDED,               N_("Time limit exceeded")},
  41         {LDAP_SIZELIMIT_EXCEEDED,               N_("Size limit exceeded")},
  42         {LDAP_COMPARE_FALSE,                    N_("Compare False")},
  43         {LDAP_COMPARE_TRUE,                     N_("Compare True")},
  44         {LDAP_STRONG_AUTH_NOT_SUPPORTED, N_("Authentication method not supported")},
  45         {LDAP_STRONG_AUTH_REQUIRED,     N_("Strong(er) authentication required")},
  46         {LDAP_PARTIAL_RESULTS,                  N_("Partial results and referral received")},
  47
  48         {LDAP_REFERRAL,                                 N_("Referral")},
  49         {LDAP_ADMINLIMIT_EXCEEDED,              N_("Administrative limit exceeded")},
  50         {LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
  51                                                                         N_("Critical extension is unavailable")},
  52         {LDAP_CONFIDENTIALITY_REQUIRED, N_("Confidentiality required")},
  53         {LDAP_SASL_BIND_IN_PROGRESS,    N_("SASL bind in progress")},
  54
  55         {LDAP_NO_SUCH_ATTRIBUTE,                N_("No such attribute")},
  56         {LDAP_UNDEFINED_TYPE,                   N_("Undefined attribute type")},
  57         {LDAP_INAPPROPRIATE_MATCHING,   N_("Inappropriate matching")},
  58         {LDAP_CONSTRAINT_VIOLATION,     N_("Constraint violation")},
  59         {LDAP_TYPE_OR_VALUE_EXISTS,     N_("Type or value exists")},
  60         {LDAP_INVALID_SYNTAX,                   N_("Invalid syntax")},
  61
  62         {LDAP_NO_SUCH_OBJECT,                   N_("No such object")},
  63         {LDAP_ALIAS_PROBLEM,                    N_("Alias problem")},
  64         {LDAP_INVALID_DN_SYNTAX,                N_("Invalid DN syntax")},
  65         {LDAP_IS_LEAF,                                  N_("Entry is a leaf")},
  66         {LDAP_ALIAS_DEREF_PROBLEM,              N_("Alias dereferencing problem")},
  67
  68         {LDAP_PROXY_AUTHZ_FAILURE,              N_("Proxy Authorization Failure")},
  69         {LDAP_INAPPROPRIATE_AUTH,               N_("Inappropriate authentication")},
  70         {LDAP_INVALID_CREDENTIALS,              N_("Invalid credentials")},
  71         {LDAP_INSUFFICIENT_ACCESS,              N_("Insufficient access")},
  72         {LDAP_BUSY,                                     N_("Server is busy")},
  73         {LDAP_UNAVAILABLE,                              N_("Server is unavailable")},
  74         {LDAP_UNWILLING_TO_PERFORM,     N_("Server is unwilling to perform")},
  75         {LDAP_LOOP_DETECT,                              N_("Loop detected")},
  76
  77         {LDAP_NAMING_VIOLATION,                 N_("Naming violation")},
  78         {LDAP_OBJECT_CLASS_VIOLATION,   N_("Object class violation")},
  79         {LDAP_NOT_ALLOWED_ON_NONLEAF,   N_("Operation not allowed on non-leaf")},
  80         {LDAP_NOT_ALLOWED_ON_RDN,               N_("Operation not allowed on RDN")},
  81         {LDAP_ALREADY_EXISTS,                   N_("Already exists")},
  82         {LDAP_NO_OBJECT_CLASS_MODS,     N_("Cannot modify object class")},
  83         {LDAP_RESULTS_TOO_LARGE,                N_("Results too large")},
  84         {LDAP_AFFECTS_MULTIPLE_DSAS,    N_("Operation affects multiple DSAs")},
  85
  86         {LDAP_OTHER,                                    N_("Internal (implementation specific) error")},
  87
  88         {LDAP_CANCELLED,                                N_("Cancelled")},
  89         {LDAP_NO_SUCH_OPERATION,                N_("No Operation to Cancel")},
  90         {LDAP_TOO_LATE,                                 N_("Too Late to Cancel")},
  91         {LDAP_CANNOT_CANCEL,                    N_("Cannot Cancel")},
  92
  93         {LDAP_ASSERTION_FAILED,                 N_("Assertion Failed")},
  94         {LDAP_X_ASSERTION_FAILED,               N_("Assertion Failed (X)")},
  95
  96         {LDAP_SYNC_REFRESH_REQUIRED,    N_("Content Sync Refresh Required")},
  97         {LDAP_X_SYNC_REFRESH_REQUIRED,  N_("Content Sync Refresh Required (X)")},
  98
  99         {LDAP_X_NO_OPERATION,                   N_("No Operation (X)")},
 100
 101         /* API ResultCodes */
 102         {LDAP_SERVER_DOWN,                              N_("Can't contact LDAP server")},
 103         {LDAP_LOCAL_ERROR,                              N_("Local error")},
 104         {LDAP_ENCODING_ERROR,                   N_("Encoding error")},
 105         {LDAP_DECODING_ERROR,                   N_("Decoding error")},
 106         {LDAP_TIMEOUT,                                  N_("Timed out")},
 107         {LDAP_AUTH_UNKNOWN,                             N_("Unknown authentication method")},
 108         {LDAP_FILTER_ERROR,                             N_("Bad search filter")},
 109         {LDAP_USER_CANCELLED,                   N_("User cancelled operation")},
 110         {LDAP_PARAM_ERROR,                              N_("Bad parameter to an ldap routine")},
 111         {LDAP_NO_MEMORY,                                N_("Out of memory")},
 112
 113         {LDAP_CONNECT_ERROR,                    N_("Connect error")},
 114         {LDAP_NOT_SUPPORTED,                    N_("Not Supported")},
 115         {LDAP_CONTROL_NOT_FOUND,                N_("Control not found")},
 116         {LDAP_NO_RESULTS_RETURNED,              N_("No results returned")},
 117         {LDAP_MORE_RESULTS_TO_RETURN,   N_("More results to return")},
 118         {LDAP_CLIENT_LOOP,                              N_("Client Loop")},
 119         {LDAP_REFERRAL_LIMIT_EXCEEDED,  N_("Referral Limit Exceeded")},
 120
 121         {LDAP_CUP_RESOURCES_EXHAUSTED,  N_("LCUP Resources Exhausted")},
 122         {LDAP_CUP_SECURITY_VIOLATION,   N_("LCUP Security Violation")},
 123         {LDAP_CUP_INVALID_DATA,                 N_("LCUP Invalid Data")},
 124         {LDAP_CUP_UNSUPPORTED_SCHEME,   N_("LCUP Unsupported Scheme")},
 125         {LDAP_CUP_RELOAD_REQUIRED,              N_("LCUP Reload Required")},
 126
 127         {0, NULL}
 128 };
 129
 130 static struct ldaperror *ldap_errlist = ldap_builtin_errlist;
 131
 132 void ldap_int_error_init( void ) {
 133 }
 134
 135 static const struct ldaperror *
 136 ldap_int_error( int err )
 137 {
 138         int     i;
 139
 140         /* XXYYZ: O(n) search instead of O(1) lookup */
 141         for ( i=0; ldap_errlist[i].e_reason != NULL; i++ ) {
 142                 if ( err == ldap_errlist[i].e_code ) {
 143                         return &ldap_errlist[i];
 144                 }
 145         }
 146
 147         return NULL;
 148 }
 149
 150 char *
 151 ldap_err2string( int err )
 152 {
 153         const struct ldaperror *e;
 154
 155         Debug( LDAP_DEBUG_TRACE, "ldap_err2string\n", 0, 0, 0 );
 156
 157         e = ldap_int_error( err );
 158
 159         if (e) {
 160                 return e->e_reason;
 161
 162         } else if ( LDAP_API_ERROR(err) ) {
 163                 return _("Unknown API error");
 164
 165         } else if ( LDAP_E_ERROR(err) ) {
 166                 return _("Unknown (extension) error");
 167
 168         } else if ( LDAP_X_ERROR(err) ) {
 169                 return _("Unknown (private extension) error");
 170         }
 171
 172         return _("Unknown error");
 173 }
 174
 175 /* deprecated */
 176 void
 177 ldap_perror( LDAP *ld, LDAP_CONST char *str )
 178 {
 179     int i;
 180         const struct ldaperror *e;
 181         Debug( LDAP_DEBUG_TRACE, "ldap_perror\n", 0, 0, 0 );
 182
 183         assert( ld != NULL );
 184         assert( LDAP_VALID( ld ) );
 185         assert( str != NULL );
 186
 187         e = ldap_int_error( ld->ld_errno );
 188
 189         fprintf( stderr, "%s: %s (%d)\n",
 190                 str ? str : "ldap_perror",
 191                 e ? _(e->e_reason) : _("unknown result code"),
 192                 ld->ld_errno );
 193
 194         if ( ld->ld_matched != NULL && ld->ld_matched[0] != '\0' ) {
 195                 fprintf( stderr, _("\tmatched DN: %s\n"), ld->ld_matched );
 196         }
 197
 198         if ( ld->ld_error != NULL && ld->ld_error[0] != '\0' ) {
 199                 fprintf( stderr, _("\tadditional info: %s\n"), ld->ld_error );
 200         }
 201
 202         if ( ld->ld_referrals != NULL && ld->ld_referrals[0] != NULL) {
 203                 fprintf( stderr, _("\treferrals:\n") );
 204                 for (i=0; ld->ld_referrals[i]; i++) {
 205                         fprintf( stderr, _("\t\t%s\n"), ld->ld_referrals[i] );
 206                 }
 207         }
 208
 209         fflush( stderr );
 210 }
 211
 212 /* deprecated */
 213 int
 214 ldap_result2error( LDAP *ld, LDAPMessage *r, int freeit )
 215 {
 216         int rc, err;
 217
 218         rc = ldap_parse_result( ld, r, &err,
 219                 NULL, NULL, NULL, NULL, freeit );
 220
 221         return err != LDAP_SUCCESS ? err : rc;
 222 }
 223
 224 /*
 225  * Parse LDAPResult Messages:
 226  *
 227  *   LDAPResult ::= SEQUENCE {
 228  *     resultCode      ENUMERATED,
 229  *     matchedDN       LDAPDN,
 230  *     errorMessage    LDAPString,
 231  *     referral        [3] Referral OPTIONAL }
 232  *
 233  * including Bind results:
 234  *
 235  *   BindResponse ::= [APPLICATION 1] SEQUENCE {
 236  *     COMPONENTS OF LDAPResult,
 237  *     serverSaslCreds  [7] OCTET STRING OPTIONAL }
 238  *
 239  * and ExtendedOp results:
 240  *
 241  *   ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
 242  *     COMPONENTS OF LDAPResult,
 243  *     responseName     [10] LDAPOID OPTIONAL,
 244  *     response         [11] OCTET STRING OPTIONAL }
 245  *
 246  */
 247 int
 248 ldap_parse_result(
 249         LDAP                    *ld,
 250         LDAPMessage             *r,
 251         int                             *errcodep,
 252         char                    **matcheddnp,
 253         char                    **errmsgp,
 254         char                    ***referralsp,
 255         LDAPControl             ***serverctrls,
 256         int                             freeit )
 257 {
 258         LDAPMessage     *lm;
 259         ber_int_t errcode = LDAP_SUCCESS;
 260
 261         ber_tag_t tag;
 262         BerElement      *ber;
 263
 264         Debug( LDAP_DEBUG_TRACE, "ldap_parse_result\n", 0, 0, 0 );
 265
 266         assert( ld != NULL );
 267         assert( LDAP_VALID( ld ) );
 268         assert( r != NULL );
 269
 270         if(errcodep != NULL) *errcodep = LDAP_SUCCESS;
 271         if(matcheddnp != NULL) *matcheddnp = NULL;
 272         if(errmsgp != NULL) *errmsgp = NULL;
 273         if(referralsp != NULL) *referralsp = NULL;
 274         if(serverctrls != NULL) *serverctrls = NULL;
 275
 276 #ifdef LDAP_R_COMPILE
 277         ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
 278 #endif
 279         /* Find the result, last msg in chain... */
 280         lm = r->lm_chain_tail;
 281         if ((lm->lm_msgtype == LDAP_RES_SEARCH_ENTRY) ||
 282                 (lm->lm_msgtype == LDAP_RES_SEARCH_REFERENCE) ||
 283                 (lm->lm_msgtype == LDAP_RES_INTERMEDIATE)) {
 284                 lm = NULL;
 285         }
 286
 287         if( lm == NULL ) {
 288                 ld->ld_errno = LDAP_NO_RESULTS_RETURNED;
 289 #ifdef LDAP_R_COMPILE
 290                 ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
 291 #endif
 292                 return ld->ld_errno;
 293         }
 294
 295         if ( ld->ld_error ) {
 296                 LDAP_FREE( ld->ld_error );
 297                 ld->ld_error = NULL;
 298         }
 299         if ( ld->ld_matched ) {
 300                 LDAP_FREE( ld->ld_matched );
 301                 ld->ld_matched = NULL;
 302         }
 303         if ( ld->ld_referrals ) {
 304                 LDAP_VFREE( ld->ld_referrals );
 305                 ld->ld_referrals = NULL;
 306         }
 307
 308         /* parse results */
 309
 310         ber = ber_dup( lm->lm_ber );
 311
 312         if ( ld->ld_version < LDAP_VERSION2 ) {
 313                 tag = ber_scanf( ber, "{ia}",
 314                         &ld->ld_errno, &ld->ld_error );
 315         } else {
 316                 ber_len_t len;
 317                 tag = ber_scanf( ber, "{iaa" /*}*/,
 318                         &ld->ld_errno, &ld->ld_matched, &ld->ld_error );
 319
 320                 if( tag != LBER_ERROR ) {
 321                         /* peek for referrals */
 322                         if( ber_peek_tag(ber, &len) == LDAP_TAG_REFERRAL ) {
 323                                 tag = ber_scanf( ber, "v", &ld->ld_referrals );
 324                         }
 325                 }
 326
 327                 /* need to clean out misc items */
 328                 if( tag != LBER_ERROR ) {
 329                         if( lm->lm_msgtype == LDAP_RES_BIND ) {
 330                                 /* look for sasl result creditials */
 331                                 if ( ber_peek_tag( ber, &len ) == LDAP_TAG_SASL_RES_CREDS ) {
 332                                         /* skip 'em */
 333                                         tag = ber_scanf( ber, "x" );
 334                                 }
 335
 336                         } else if( lm->lm_msgtype == LDAP_RES_EXTENDED ) {
 337                                 /* look for exop result oid or value */
 338                                 if ( ber_peek_tag( ber, &len ) == LDAP_TAG_EXOP_RES_OID ) {
 339                                         /* skip 'em */
 340                                         tag = ber_scanf( ber, "x" );
 341                                 }
 342
 343                                 if ( tag != LBER_ERROR &&
 344                                         ber_peek_tag( ber, &len ) == LDAP_TAG_EXOP_RES_VALUE )
 345                                 {
 346                                         /* skip 'em */
 347                                         tag = ber_scanf( ber, "x" );
 348                                 }
 349                         }
 350                 }
 351
 352                 if( tag != LBER_ERROR ) {
 353                         int rc = ldap_pvt_get_controls( ber, serverctrls );
 354
 355                         if( rc != LDAP_SUCCESS ) {
 356                                 tag = LBER_ERROR;
 357                         }
 358                 }
 359
 360                 if( tag != LBER_ERROR ) {
 361                         tag = ber_scanf( ber, /*{*/"}" );
 362                 }
 363         }
 364
 365         if ( tag == LBER_ERROR ) {
 366                 ld->ld_errno = errcode = LDAP_DECODING_ERROR;
 367         }
 368
 369         if( ber != NULL ) {
 370                 ber_free( ber, 0 );
 371         }
 372
 373         /* return */
 374         if( errcodep != NULL ) {
 375                 *errcodep = ld->ld_errno;
 376         }
 377         if ( errcode == LDAP_SUCCESS ) {
 378                 if( matcheddnp != NULL ) {
 379                         *matcheddnp = LDAP_STRDUP( ld->ld_matched );
 380                 }
 381                 if( errmsgp != NULL ) {
 382                         *errmsgp = LDAP_STRDUP( ld->ld_error );
 383                 }
 384
 385                 if( referralsp != NULL) {
 386                         *referralsp = ldap_value_dup( ld->ld_referrals );
 387                 }
 388         }
 389
 390         if ( freeit ) {
 391                 ldap_msgfree( r );
 392         }
 393 #ifdef LDAP_R_COMPILE
 394         ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
 395 #endif
 396
 397         return( errcode );
 398 }