git.sur5r.net Git - openldap/blob - servers/slapd/back-ldap/extended.c

   1 /* extended.c - ldap backend extended routines */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2003-2006 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* ACKNOWLEDGEMENTS:
  17  * This work was initially developed by the Howard Chu for inclusion
  18  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  19  * Masarati.
  20  */
  21
  22 #include "portable.h"
  23
  24 #include <stdio.h>
  25 #include <ac/string.h>
  26
  27 #include "slap.h"
  28 #include "back-ldap.h"
  29 #include "lber_pvt.h"
  30
  31 static BI_op_extended ldap_back_exop_passwd;
  32 static BI_op_extended ldap_back_exop_generic;
  33
  34 static struct exop {
  35         struct berval   oid;
  36         BI_op_extended  *extended;
  37 } exop_table[] = {
  38         { BER_BVC(LDAP_EXOP_MODIFY_PASSWD),     ldap_back_exop_passwd },
  39         { BER_BVNULL, NULL }
  40 };
  41
  42 static int
  43 ldap_back_extended_one( Operation *op, SlapReply *rs, BI_op_extended exop )
  44 {
  45         ldapconn_t      *lc;
  46         LDAPControl     **oldctrls = NULL;
  47         int             rc;
  48
  49         /* FIXME: this needs to be called here, so it is
  50          * called twice; maybe we could avoid the
  51          * ldap_back_dobind() call inside each extended()
  52          * call ... */
  53         lc = ldap_back_getconn( op, rs, LDAP_BACK_SENDERR );
  54         if ( !lc || !ldap_back_dobind( lc, op, rs, LDAP_BACK_SENDERR ) ) {
  55                 return -1;
  56         }
  57
  58         oldctrls = op->o_ctrls;
  59         if ( ldap_back_proxy_authz_ctrl( lc, op, rs, &op->o_ctrls ) ) {
  60                 op->o_ctrls = oldctrls;
  61                 send_ldap_extended( op, rs );
  62                 rs->sr_text = NULL;
  63                 /* otherwise frontend resends result */
  64                 rc = rs->sr_err = SLAPD_ABANDON;
  65                 goto done;
  66         }
  67
  68         rc = exop( op, rs );
  69
  70         if ( op->o_ctrls && op->o_ctrls != oldctrls ) {
  71                 free( op->o_ctrls[ 0 ] );
  72                 free( op->o_ctrls );
  73         }
  74         op->o_ctrls = oldctrls;
  75
  76 done:;
  77         if ( lc != NULL ) {
  78                 ldap_back_release_conn( op, rs, lc );
  79         }
  80
  81         return rc;
  82 }
  83
  84 int
  85 ldap_back_extended(
  86                 Operation       *op,
  87                 SlapReply       *rs )
  88 {
  89         int     i;
  90
  91         for ( i = 0; exop_table[i].extended != NULL; i++ ) {
  92                 if ( bvmatch( &exop_table[i].oid, &op->oq_extended.rs_reqoid ) )
  93                 {
  94                         return ldap_back_extended_one( op, rs, exop_table[i].extended );
  95                 }
  96         }
  97
  98         /* if we get here, the exop is known; the best that we can do
  99          * is pass it thru as is */
 100         /* FIXME: maybe a list of OIDs to pass thru would be safer */
 101         return ldap_back_extended_one( op, rs, ldap_back_exop_generic );
 102 }
 103
 104 static int
 105 ldap_back_exop_passwd(
 106                 Operation       *op,
 107                 SlapReply       *rs )
 108 {
 109         ldapconn_t      *lc;
 110         req_pwdexop_s   *qpw = &op->oq_pwdexop;
 111         LDAPMessage     *res;
 112         ber_int_t       msgid;
 113         int             rc, isproxy;
 114         int             do_retry = 1;
 115
 116         lc = ldap_back_getconn( op, rs, LDAP_BACK_SENDERR );
 117         if ( !lc || !ldap_back_dobind( lc, op, rs, LDAP_BACK_SENDERR ) ) {
 118                 return -1;
 119         }
 120
 121         isproxy = ber_bvcmp( &op->o_req_ndn, &op->o_ndn );
 122
 123         Debug( LDAP_DEBUG_ARGS, "==> ldap_back_exop_passwd(\"%s\")%s\n",
 124                 op->o_req_dn.bv_val, isproxy ? " (proxy)" : "", 0 );
 125
 126 retry:
 127         rc = ldap_passwd( lc->lc_ld, isproxy ? &op->o_req_dn : NULL,
 128                 qpw->rs_old.bv_val ? &qpw->rs_old : NULL,
 129                 qpw->rs_new.bv_val ? &qpw->rs_new : NULL,
 130                 op->o_ctrls, NULL, &msgid );
 131
 132         if ( rc == LDAP_SUCCESS ) {
 133                 if ( ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, NULL, &res ) == -1 ) {
 134                         ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER, &rc );
 135                         rs->sr_err = rc;
 136
 137                 } else {
 138                         /* sigh. parse twice, because parse_passwd
 139                          * doesn't give us the err / match / msg info.
 140                          */
 141                         rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
 142                                         (char **)&rs->sr_matched,
 143                                         (char **)&rs->sr_text,
 144                                         NULL, NULL, 0 );
 145
 146                         if ( rc == LDAP_SUCCESS ) {
 147                                 if ( rs->sr_err == LDAP_SUCCESS ) {
 148                                         struct berval   newpw;
 149
 150                                         /* this never happens because
 151                                          * the frontend is generating
 152                                          * the new password, so when
 153                                          * the passwd exop is proxied,
 154                                          * it never delegates password
 155                                          * generation to the remote server
 156                                          */
 157                                         rc = ldap_parse_passwd( lc->lc_ld, res,
 158                                                         &newpw );
 159                                         if ( rc == LDAP_SUCCESS &&
 160                                                         !BER_BVISNULL( &newpw ) )
 161                                         {
 162                                                 rs->sr_type = REP_EXTENDED;
 163                                                 rs->sr_rspdata = slap_passwd_return( &newpw );
 164                                                 free( newpw.bv_val );
 165                                         }
 166
 167                                 } else {
 168                                         rc = rs->sr_err;
 169                                 }
 170                         }
 171                         ldap_msgfree( res );
 172                 }
 173         }
 174
 175         if ( rc != LDAP_SUCCESS ) {
 176                 rs->sr_err = slap_map_api2result( rs );
 177                 if ( rs->sr_err == LDAP_UNAVAILABLE && do_retry ) {
 178                         do_retry = 0;
 179                         if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_SENDERR ) ) {
 180                                 goto retry;
 181                         }
 182                 }
 183                 send_ldap_extended( op, rs );
 184                 /* otherwise frontend resends result */
 185                 rc = rs->sr_err = SLAPD_ABANDON;
 186         }
 187
 188         /* these have to be freed anyway... */
 189         if ( rs->sr_matched ) {
 190                 free( (char *)rs->sr_matched );
 191                 rs->sr_matched = NULL;
 192         }
 193
 194         if ( rs->sr_text ) {
 195                 free( (char *)rs->sr_text );
 196                 rs->sr_text = NULL;
 197         }
 198
 199         if ( lc != NULL ) {
 200                 ldap_back_release_conn( op, rs, lc );
 201         }
 202
 203         return rc;
 204 }
 205
 206 static int
 207 ldap_back_exop_generic(
 208         Operation       *op,
 209         SlapReply       *rs )
 210 {
 211         ldapconn_t      *lc;
 212         LDAPMessage     *res;
 213         ber_int_t       msgid;
 214         int             rc;
 215         int             do_retry = 1;
 216
 217         lc = ldap_back_getconn( op, rs, LDAP_BACK_SENDERR );
 218         if ( !lc || !ldap_back_dobind( lc, op, rs, LDAP_BACK_SENDERR ) ) {
 219                 return -1;
 220         }
 221
 222         Debug( LDAP_DEBUG_ARGS, "==> ldap_back_exop_generic(%s, \"%s\")\n",
 223                 op->ore_reqoid.bv_val, op->o_req_dn.bv_val, 0 );
 224
 225 retry:
 226         rc = ldap_extended_operation( lc->lc_ld,
 227                 op->ore_reqoid.bv_val, op->ore_reqdata,
 228                 op->o_ctrls, NULL, &msgid );
 229
 230         if ( rc == LDAP_SUCCESS ) {
 231                 if ( ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, NULL, &res ) == -1 ) {
 232                         ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER, &rc );
 233                         rs->sr_err = rc;
 234
 235                 } else {
 236                         /* sigh. parse twice, because parse_passwd
 237                          * doesn't give us the err / match / msg info.
 238                          */
 239                         rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
 240                                         (char **)&rs->sr_matched,
 241                                         (char **)&rs->sr_text,
 242                                         NULL, NULL, 0 );
 243                         if ( rc == LDAP_SUCCESS ) {
 244                                 if ( rs->sr_err == LDAP_SUCCESS ) {
 245                                         rc = ldap_parse_extended_result( lc->lc_ld, res,
 246                                                         (char **)&rs->sr_rspoid, &rs->sr_rspdata, 0 );
 247                                         if ( rc == LDAP_SUCCESS ) {
 248                                                 rs->sr_type = REP_EXTENDED;
 249                                         }
 250
 251                                 } else {
 252                                         rc = rs->sr_err;
 253                                 }
 254                         }
 255                         ldap_msgfree( res );
 256                 }
 257         }
 258
 259         if ( rc != LDAP_SUCCESS ) {
 260                 rs->sr_err = slap_map_api2result( rs );
 261                 if ( rs->sr_err == LDAP_UNAVAILABLE && do_retry ) {
 262                         do_retry = 0;
 263                         if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_SENDERR ) ) {
 264                                 goto retry;
 265                         }
 266                 }
 267                 send_ldap_extended( op, rs );
 268                 /* otherwise frontend resends result */
 269                 rc = rs->sr_err = SLAPD_ABANDON;
 270         }
 271
 272         /* these have to be freed anyway... */
 273         if ( rs->sr_matched ) {
 274                 free( (char *)rs->sr_matched );
 275                 rs->sr_matched = NULL;
 276         }
 277
 278         if ( rs->sr_text ) {
 279                 free( (char *)rs->sr_text );
 280                 rs->sr_text = NULL;
 281         }
 282
 283         if ( lc != NULL ) {
 284                 ldap_back_release_conn( op, rs, lc );
 285         }
 286
 287         return rc;
 288 }
 289