3 * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
4 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
7 * Copyright (c) 1995 Regents of the University of Michigan.
10 * Redistribution and use in source and binary forms are permitted
11 * provided that this notice is preserved and that due credit is given
12 * to the University of Michigan at Ann Arbor. The name of the University
13 * may not be used to endorse or promote products derived from this
14 * software without specific prior written permission. This software
15 * is provided ``as is'' without express or implied warranty.
21 #include <ac/socket.h>
29 static int compare_entry(
32 AttributeAssertion *ava );
41 struct berval dn = { 0, NULL };
42 struct berval desc = { 0, NULL };
43 struct berval value = { 0, NULL };
44 AttributeAssertion ava = { NULL, { 0, NULL } };
48 Slapi_PBlock *pb = op->o_pb;
54 LDAP_LOG( OPERATION, ENTRY, "do_compare: conn %d\n", op->o_connid, 0, 0 );
56 Debug( LDAP_DEBUG_TRACE, "do_compare\n", 0, 0, 0 );
59 * Parse the compare request. It looks like this:
61 * CompareRequest := [APPLICATION 14] SEQUENCE {
62 * entry DistinguishedName,
65 * value AttributeValue
70 if ( ber_scanf( op->o_ber, "{m" /*}*/, &dn ) == LBER_ERROR ) {
72 LDAP_LOG( OPERATION, ERR,
73 "do_compare: conn %d ber_scanf failed\n", op->o_connid, 0, 0 );
75 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
77 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
78 return SLAPD_DISCONNECT;
81 if ( ber_scanf( op->o_ber, "{mm}", &desc, &value ) == LBER_ERROR ) {
83 LDAP_LOG( OPERATION, ERR,
84 "do_compare: conn %d get ava failed\n", op->o_connid, 0, 0 );
86 Debug( LDAP_DEBUG_ANY, "do_compare: get ava failed\n", 0, 0, 0 );
88 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
89 return SLAPD_DISCONNECT;
92 if ( ber_scanf( op->o_ber, /*{*/ "}" ) == LBER_ERROR ) {
94 LDAP_LOG( OPERATION, ERR,
95 "do_compare: conn %d ber_scanf failed\n", op->o_connid, 0, 0 );
97 Debug( LDAP_DEBUG_ANY, "ber_scanf failed\n", 0, 0, 0 );
99 send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
100 return SLAPD_DISCONNECT;
103 if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
105 LDAP_LOG( OPERATION, INFO,
106 "do_compare: conn %d get_ctrls failed\n", op->o_connid, 0, 0 );
108 Debug( LDAP_DEBUG_ANY, "do_compare: get_ctrls failed\n", 0, 0, 0 );
113 rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn );
114 if( rs->sr_err != LDAP_SUCCESS ) {
116 LDAP_LOG( OPERATION, INFO,
117 "do_compare: conn %d invalid dn (%s)\n",
118 op->o_connid, dn.bv_val, 0 );
120 Debug( LDAP_DEBUG_ANY,
121 "do_compare: invalid dn (%s)\n", dn.bv_val, 0, 0 );
123 send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
127 rs->sr_err = slap_bv2ad( &desc, &ava.aa_desc, &rs->sr_text );
128 if( rs->sr_err != LDAP_SUCCESS ) {
129 send_ldap_result( op, rs );
134 rs->sr_err = asserted_value_validate_normalize( ava.aa_desc,
135 ava.aa_desc->ad_type->sat_equality,
136 SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
137 &value, &ava.aa_value, &rs->sr_text );
139 rs->sr_err = value_validate_normalize( ava.aa_desc, SLAP_MR_EQUALITY,
140 &value, &ava.aa_value, &rs->sr_text );
142 if( rs->sr_err != LDAP_SUCCESS ) {
143 send_ldap_result( op, rs );
147 if( strcasecmp( op->o_req_ndn.bv_val, LDAP_ROOT_DSE ) == 0 ) {
149 LDAP_LOG( OPERATION, ARGS,
150 "do_compare: dn (%s) attr(%s) value (%s)\n",
151 op->o_req_dn.bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val );
153 Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
154 op->o_req_dn.bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val );
157 Statslog( LDAP_DEBUG_STATS,
158 "conn=%lu op=%lu CMP dn=\"%s\" attr=\"%s\"\n",
159 op->o_connid, op->o_opid, op->o_req_dn.bv_val,
160 ava.aa_desc->ad_cname.bv_val, 0 );
162 if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
163 send_ldap_result( op, rs );
167 rs->sr_err = root_dse_info( op->o_conn, &entry, &rs->sr_text );
168 if( rs->sr_err != LDAP_SUCCESS ) {
169 send_ldap_result( op, rs );
173 } else if ( bvmatch( &op->o_req_ndn, &global_schemandn ) ) {
175 LDAP_LOG( OPERATION, ARGS,
176 "do_compare: dn (%s) attr(%s) value (%s)\n",
177 op->o_req_dn.bv_val, ava.aa_desc->ad_cname.bv_val,
178 ava.aa_value.bv_val );
180 Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
181 op->o_req_dn.bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val );
184 Statslog( LDAP_DEBUG_STATS,
185 "conn=%lu op=%lu CMP dn=\"%s\" attr=\"%s\"\n",
186 op->o_connid, op->o_opid, op->o_req_dn.bv_val,
187 ava.aa_desc->ad_cname.bv_val, 0 );
189 if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
190 send_ldap_result( op, rs );
195 rs->sr_err = schema_info( &entry, &rs->sr_text );
196 if( rs->sr_err != LDAP_SUCCESS ) {
197 send_ldap_result( op, rs );
204 rs->sr_err = compare_entry( op, entry, &ava );
207 send_ldap_result( op, rs );
209 if( rs->sr_err == LDAP_COMPARE_TRUE || rs->sr_err == LDAP_COMPARE_FALSE ) {
216 manageDSAit = get_manageDSAit( op );
219 * We could be serving multiple database backends. Select the
220 * appropriate one, or send a referral to our "referral server"
221 * if we don't hold it.
223 if ( (op->o_bd = select_backend( &op->o_req_ndn, manageDSAit, 0 )) == NULL ) {
224 rs->sr_ref = referral_rewrite( default_referral,
225 NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );
227 rs->sr_err = LDAP_REFERRAL;
228 if (!rs->sr_ref) rs->sr_ref = default_referral;
229 send_ldap_result( op, rs );
231 if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );
236 /* check restrictions */
237 if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
238 send_ldap_result( op, rs );
242 /* check for referrals */
243 if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
248 LDAP_LOG( OPERATION, ARGS,
249 "do_compare: dn (%s) attr(%s) value (%s)\n",
250 op->o_req_dn.bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val );
252 Debug( LDAP_DEBUG_ARGS, "do_compare: dn (%s) attr (%s) value (%s)\n",
253 op->o_req_dn.bv_val, ava.aa_desc->ad_cname.bv_val, ava.aa_value.bv_val );
256 Statslog( LDAP_DEBUG_STATS, "conn=%lu op=%lu CMP dn=\"%s\" attr=\"%s\"\n",
257 op->o_connid, op->o_opid, op->o_req_dn.bv_val,
258 ava.aa_desc->ad_cname.bv_val, 0 );
260 #if defined( LDAP_SLAPI )
261 slapi_x_pblock_set_operation( pb, op );
262 slapi_pblock_set( pb, SLAPI_COMPARE_TARGET, (void *)dn.bv_val );
263 slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)manageDSAit );
264 slapi_pblock_set( pb, SLAPI_COMPARE_TYPE, (void *)desc.bv_val );
265 slapi_pblock_set( pb, SLAPI_COMPARE_VALUE, (void *)&value );
267 rs->sr_err = doPluginFNs( op->o_bd, SLAPI_PLUGIN_PRE_COMPARE_FN, pb );
268 if ( rs->sr_err != 0 ) {
270 * A preoperation plugin failure will abort the
274 LDAP_LOG( OPERATION, INFO, "do_compare: compare preoperation plugin "
275 "failed\n", 0, 0, 0);
277 Debug(LDAP_DEBUG_TRACE, "do_compare: compare preoperation plugin "
278 "failed.\n", 0, 0, 0);
280 if ( slapi_pblock_get( pb, SLAPI_RESULT_CODE, (void *)&rs->sr_err ) != 0)
281 rs->sr_err = LDAP_OTHER;
284 #endif /* defined( LDAP_SLAPI ) */
286 if ( op->o_bd->be_compare ) {
288 op->o_bd->be_compare( op, rs );
290 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
291 "operation not supported within namingContext" );
294 #if defined( LDAP_SLAPI )
295 if ( doPluginFNs( op->o_bd, SLAPI_PLUGIN_POST_COMPARE_FN, pb ) != 0 ) {
297 LDAP_LOG( OPERATION, INFO, "do_compare: compare postoperation plugins "
298 "failed\n", 0, 0, 0 );
300 Debug(LDAP_DEBUG_TRACE, "do_compare: compare postoperation plugins "
301 "failed.\n", 0, 0, 0);
304 #endif /* defined( LDAP_SLAPI ) */
307 free( op->o_req_dn.bv_val );
308 free( op->o_req_ndn.bv_val );
309 if ( ava.aa_value.bv_val ) free( ava.aa_value.bv_val );
314 static int compare_entry(
317 AttributeAssertion *ava )
319 int rc = LDAP_NO_SUCH_ATTRIBUTE;
322 if ( ! access_allowed( op, e,
323 ava->aa_desc, &ava->aa_value, ACL_COMPARE, NULL ) )
325 return LDAP_INSUFFICIENT_ACCESS;
328 for(a = attrs_find( e->e_attrs, ava->aa_desc );
330 a = attrs_find( a->a_next, ava->aa_desc ))
332 rc = LDAP_COMPARE_FALSE;
335 if ( value_find_ex( ava->aa_desc,
336 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
337 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
339 &ava->aa_value ) == 0 )
341 if ( value_find( ava->aa_desc, a->a_vals, &ava->aa_value ) == 0 )
344 rc = LDAP_COMPARE_TRUE;