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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1999-2000 The OpenLDAP Foundation.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms are permitted only
   7  * as authorized by the OpenLDAP Public License.  A copy of this
   8  * license is available at http://www.OpenLDAP.org/license.html or
   9  * in file LICENSE in the top-level directory of the distribution.
  10  */
  11
  12 /*
  13  * LDAPv3 Extended Operation Request
  14  *      ExtendedRequest ::= [APPLICATION 23] SEQUENCE {
  15  *              requestName      [0] LDAPOID,
  16  *              requestValue     [1] OCTET STRING OPTIONAL
  17  *      }
  18  *
  19  * LDAPv3 Extended Operation Response
  20  *      ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
  21  *              COMPONENTS OF LDAPResult,
  22  *              responseName     [10] LDAPOID OPTIONAL,
  23  *              response         [11] OCTET STRING OPTIONAL
  24  *      }
  25  *
  26  */
  27
  28 #include "portable.h"
  29
  30 #include <stdio.h>
  31 #include <ac/socket.h>
  32
  33 #include "slap.h"
  34
  35 #define MAX_OID_LENGTH  128
  36
  37 typedef struct extop_list_t {
  38         struct extop_list_t *next;
  39         char *oid;
  40         SLAP_EXTOP_MAIN_FN ext_main;
  41 } extop_list_t;
  42
  43 extop_list_t *supp_ext_list = NULL;
  44
  45 /* this list of built-in extops is for extops that are not part
  46  * of backends or in external modules.  essentially, this is
  47  * just a way to get built-in extops onto the extop list without
  48  * having a separate init routine for each built-in extop.
  49  */
  50 struct {
  51         char *oid;
  52         SLAP_EXTOP_MAIN_FN ext_main;
  53 } builtin_extops[] = {
  54 #ifdef HAVE_TLS
  55                 { LDAP_EXOP_START_TLS, starttls_extop },
  56 #endif
  57                 { LDAP_EXOP_X_MODIFY_PASSWD, passwd_extop },
  58                 { NULL, NULL }
  59         };
  60
  61
  62 static extop_list_t *find_extop( extop_list_t *list, char *oid );
  63
  64 char *
  65 get_supported_extop (int index)
  66 {
  67         extop_list_t *ext;
  68
  69         /* linear scan is slow, but this way doesn't force a
  70          * big change on root_dse.c, where this routine is used.
  71          */
  72         for (ext = supp_ext_list; ext != NULL && --index >= 0; ext = ext->next) ;
  73         if (ext == NULL)
  74                 return(NULL);
  75         return(ext->oid);
  76 }
  77
  78 int
  79 do_extended(
  80     Connection  *conn,
  81     Operation   *op
  82 )
  83 {
  84         int rc = LDAP_SUCCESS;
  85         char* reqoid;
  86         struct berval *reqdata;
  87         ber_tag_t tag;
  88         ber_len_t len;
  89         extop_list_t *ext;
  90         const char *text;
  91         struct berval **refs;
  92         char *rspoid;
  93         struct berval *rspdata;
  94         LDAPControl **rspctrls;
  95
  96 #ifdef NEW_LOGGING
  97         LDAP_LOG(( "operation", LDAP_LEVEL_ENTRY,
  98                    "do_extended: conn %d\n", conn->c_connid ));
  99 #else
 100         Debug( LDAP_DEBUG_TRACE, "do_extended\n", 0, 0, 0 );
 101 #endif
 102         reqoid = NULL;
 103         reqdata = NULL;
 104
 105         if( op->o_protocol < LDAP_VERSION3 ) {
 106 #ifdef NEW_LOGGING
 107                 LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
 108                            "do_extended: protocol version (%d) too low.\n", op->o_protocol ));
 109 #else
 110                 Debug( LDAP_DEBUG_ANY, "do_extended: protocol version (%d) too low\n",
 111                         op->o_protocol, 0 ,0 );
 112 #endif
 113                 send_ldap_disconnect( conn, op,
 114                         LDAP_PROTOCOL_ERROR, "requires LDAPv3" );
 115                 rc = -1;
 116                 goto done;
 117         }
 118
 119         if ( ber_scanf( op->o_ber, "{a" /*}*/, &reqoid ) == LBER_ERROR ) {
 120 #ifdef NEW_LOGGING
 121                 LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
 122                            "do_extended: conn %d  ber_scanf failed\n", conn->c_connid ));
 123 #else
 124                 Debug( LDAP_DEBUG_ANY, "do_extended: ber_scanf failed\n", 0, 0 ,0 );
 125 #endif
 126                 send_ldap_disconnect( conn, op,
 127                         LDAP_PROTOCOL_ERROR, "decoding error" );
 128                 rc = -1;
 129                 goto done;
 130         }
 131
 132         if( !(ext = find_extop(supp_ext_list, reqoid)) ) {
 133 #ifdef NEW_LOGGING
 134                 LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
 135                            "do_extended: conn %d  unsupported operation \"%s\"\n",
 136                            conn->c_connid, reqoid ));
 137 #else
 138                 Debug( LDAP_DEBUG_ANY, "do_extended: unsupported operation \"%s\"\n",
 139                         reqoid, 0 ,0 );
 140 #endif
 141                 send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR,
 142                         NULL, "unsupported extended operation", NULL, NULL );
 143                 goto done;
 144         }
 145
 146         tag = ber_peek_tag( op->o_ber, &len );
 147
 148         if( ber_peek_tag( op->o_ber, &len ) == LDAP_TAG_EXOP_REQ_VALUE ) {
 149                 if( ber_scanf( op->o_ber, "O", &reqdata ) == LBER_ERROR ) {
 150 #ifdef NEW_LOGGING
 151                         LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
 152                                    "do_extended: conn %d  ber_scanf failed\n", conn->c_connid ));
 153 #else
 154                         Debug( LDAP_DEBUG_ANY, "do_extended: ber_scanf failed\n", 0, 0 ,0 );
 155 #endif
 156                         send_ldap_disconnect( conn, op,
 157                                 LDAP_PROTOCOL_ERROR, "decoding error" );
 158                         rc = -1;
 159                         goto done;
 160                 }
 161         }
 162
 163         if( (rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
 164 #ifdef NEW_LOGGING
 165                 LDAP_LOG(( "operation", LDAP_LEVEL_ERR,
 166                            "do_extended: conn %d  get_ctrls failed\n", conn->c_connid ));
 167 #else
 168                 Debug( LDAP_DEBUG_ANY, "do_extended: get_ctrls failed\n", 0, 0 ,0 );
 169 #endif
 170                 return rc;
 171         }
 172
 173 #ifdef NEW_LOGGING
 174         LDAP_LOG(( "operation", LDAP_LEVEL_DETAIL1,
 175                    "do_extended: conn %d  oid=%d\n.", conn->c_connid, reqoid ));
 176 #else
 177         Debug( LDAP_DEBUG_ARGS, "do_extended: oid=%s\n", reqoid, 0 ,0 );
 178 #endif
 179         rspoid = NULL;
 180         rspdata = NULL;
 181         rspctrls = NULL;
 182         text = NULL;
 183         refs = NULL;
 184
 185         rc = (ext->ext_main)( conn, op,
 186                 reqoid, reqdata,
 187                 &rspoid, &rspdata, &rspctrls, &text, &refs );
 188
 189         if( rc != SLAPD_ABANDON ) {
 190                 if (rc == LDAP_REFERRAL) {
 191                         refs = default_referral;
 192                 }
 193
 194                 send_ldap_extended( conn, op, rc, NULL, text, refs,
 195                         rspoid, rspdata, rspctrls );
 196         }
 197
 198         if ( rspoid != NULL ) {
 199                 free( rspoid );
 200         }
 201
 202         if ( rspdata != NULL )
 203                 ber_bvfree( rspdata );
 204
 205 done:
 206         if ( reqdata != NULL ) {
 207                 ber_bvfree( reqdata );
 208         }
 209         if ( reqoid != NULL ) {
 210                 free( reqoid );
 211         }
 212
 213         return rc;
 214 }
 215
 216 int
 217 load_extop(
 218         const char *ext_oid,
 219         SLAP_EXTOP_MAIN_FN ext_main )
 220 {
 221         extop_list_t *ext;
 222
 223         if( ext_oid == NULL || *ext_oid == '\0' ) return -1;
 224         if(!ext_main) return -1;
 225
 226         ext = ch_calloc(1, sizeof(extop_list_t));
 227         if (ext == NULL)
 228                 return(-1);
 229
 230         ext->oid = ch_strdup( ext_oid );
 231         if (ext->oid == NULL) {
 232                 free(ext);
 233                 return(-1);
 234         }
 235
 236         ext->ext_main = ext_main;
 237         ext->next = supp_ext_list;
 238
 239         supp_ext_list = ext;
 240
 241         return(0);
 242 }
 243
 244 int
 245 extops_init (void)
 246 {
 247         int i;
 248
 249         for (i = 0; builtin_extops[i].oid != NULL; i++) {
 250                 load_extop(builtin_extops[i].oid, builtin_extops[i].ext_main);
 251         }
 252         return(0);
 253 }
 254
 255 int
 256 extops_kill (void)
 257 {
 258         extop_list_t *ext;
 259
 260         /* we allocated the memory, so we have to free it, too. */
 261         while ((ext = supp_ext_list) != NULL) {
 262                 supp_ext_list = ext->next;
 263                 if (ext->oid != NULL)
 264                         ch_free(ext->oid);
 265                 ch_free(ext);
 266         }
 267         return(0);
 268 }
 269
 270 static extop_list_t *
 271 find_extop( extop_list_t *list, char *oid )
 272 {
 273         extop_list_t *ext;
 274
 275         for (ext = list; ext; ext = ext->next) {
 276                 if (strcmp(ext->oid, oid) == 0)
 277                         return(ext);
 278         }
 279         return(NULL);
 280 }