/* $OpenLDAP$ */ /* * Copyright 1999 The OpenLDAP Foundation. * All rights reserved. * * Redistribution and use in source and binary forms are permitted only * as authorized by the OpenLDAP Public License. A copy of this * license is available at http://www.OpenLDAP.org/license.html or * in file LICENSE in the top-level directory of the distribution. */ /* * LDAPv3 Extended Operation Request * ExtendedRequest ::= [APPLICATION 23] SEQUENCE { * requestName [0] LDAPOID, * requestValue [1] OCTET STRING OPTIONAL * } * * LDAPv3 Extended Operation Response * ExtendedResponse ::= [APPLICATION 24] SEQUENCE { * COMPONENTS OF LDAPResult, * responseName [10] LDAPOID OPTIONAL, * response [11] OCTET STRING OPTIONAL * } * */ #include "portable.h" #include #include #include "slap.h" #ifdef SLAPD_EXTERNAL_EXTENSIONS typedef struct extensions_cookie_t { Connection *conn; Operation *op; } extensions_cookie_t; #define MAX_OID_LENGTH 128 typedef struct extensions_list_t { struct extensions_list_t *next; char *oid; int (*ext_main)(int (*)(), void *, char *reqoid, struct berval *reqdata, char **rspoid, struct berval *rspdata, char **text); } extensions_list_t; extensions_list_t *supp_ext_list = NULL; extensions_list_t *find_extension (extensions_list_t *list, char *oid); int extensions_callback (extensions_cookie_t *cookie, int msg, int arg, void *argp); #else char *supportedExtensions[] = { NULL }; #endif char * get_supported_extension (int index) { #ifdef SLAPD_EXTERNAL_EXTENSIONS extensions_list_t *ext; /* linear scan is slow, but this way doesn't force a * big change on root_dse.c, where this routine is used. */ for (ext = supp_ext_list; ext != NULL && --index >= 0; ext = ext->next) ; if (ext == NULL) return(NULL); return(ext->oid); #else return(supportedExtensions[index]); #endif } int do_extended( Connection *conn, Operation *op ) { int rc = LDAP_SUCCESS; char* reqoid ; struct berval reqdata; ber_tag_t tag; ber_len_t len; #ifdef SLAPD_EXTERNAL_EXTENSIONS extensions_list_t *ext; char *rspoid, *text; struct berval rspdata; extensions_cookie_t cookie; #endif Debug( LDAP_DEBUG_TRACE, "do_extended\n", 0, 0, 0 ); reqoid = NULL; reqdata.bv_val = NULL; if( op->o_protocol < LDAP_VERSION3 ) { Debug( LDAP_DEBUG_ANY, "do_extended: protocol version (%d) too low\n", op->o_protocol, 0 ,0 ); send_ldap_disconnect( conn, op, LDAP_PROTOCOL_ERROR, "requires LDAPv3" ); rc = -1; goto done; } if ( ber_scanf( op->o_ber, "{a" /*}*/, &reqoid ) == LBER_ERROR ) { Debug( LDAP_DEBUG_ANY, "do_extended: ber_scanf failed\n", 0, 0 ,0 ); send_ldap_disconnect( conn, op, LDAP_PROTOCOL_ERROR, "decoding error" ); rc = -1; goto done; } #ifdef SLAPD_EXTERNAL_EXTENSIONS if( !(ext = find_extension(supp_ext_list, reqoid)) ) #else if( !charray_inlist( supportedExtensions, reqoid ) ) #endif { Debug( LDAP_DEBUG_ANY, "do_extended: unsupported operation \"%s\"\n", reqoid, 0 ,0 ); send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR, NULL, "unsuppored extended operation", NULL, NULL ); goto done; } tag = ber_peek_tag( op->o_ber, &len ); if( ber_peek_tag( op->o_ber, &len ) == LDAP_TAG_EXOP_REQ_VALUE ) { if( ber_scanf( op->o_ber, "o", &reqdata ) == LBER_ERROR ) { Debug( LDAP_DEBUG_ANY, "do_extended: ber_scanf failed\n", 0, 0 ,0 ); send_ldap_disconnect( conn, op, LDAP_PROTOCOL_ERROR, "decoding error" ); rc = -1; goto done; } } if( (rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) { Debug( LDAP_DEBUG_ANY, "do_extended: get_ctrls failed\n", 0, 0 ,0 ); return rc; } Debug( LDAP_DEBUG_ARGS, "do_extended: oid \"%s\"\n", reqoid, 0 ,0 ); #ifdef SLAPD_EXTERNAL_EXTENSIONS cookie.conn = conn; cookie.op = op; rspoid = NULL; rspdata.bv_len = 0; rspdata.bv_val = NULL; text = NULL; rc = (ext->ext_main)(extensions_callback, &cookie, reqoid, &reqdata, &rspoid, &rspdata, &text); send_ldap_extended(conn, op, rc, NULL, text, rspoid, rspdata.bv_val ? &rspdata : NULL); if (rspoid != NULL) free(rspoid); if ( rspdata.bv_val != NULL ) free(rspdata.bv_val); if ( text != NULL ) free(text); #else send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR, NULL, "unsupported extended operation", NULL, NULL ); #endif done: if ( reqoid != NULL ) { free( reqoid ); } if ( reqdata.bv_val != NULL ) { free( reqdata.bv_val ); } return rc; } #ifdef SLAPD_EXTERNAL_EXTENSIONS int load_extension ( const void *module, const char *file_name ) { extensions_list_t *ext; int (*ext_getoid)(int index, char *oid, int blen); int rc; ext = ch_calloc(1, sizeof(extensions_list_t)); if (ext == NULL) return(-1); ext->oid = ch_malloc(MAX_OID_LENGTH); if (ext->oid == NULL) { free(ext); return(-1); } ext->ext_main = module_resolve(module, "ext_main"); if (ext->ext_main == NULL) { free(ext->oid); free(ext); return(-1); } ext_getoid = module_resolve(module, "ext_getoid"); if (ext_getoid == NULL) { free(ext->oid); free(ext); return(-1); } rc = (ext_getoid)(0, ext->oid, MAX_OID_LENGTH); if (rc != 0) { free(ext->oid); free(ext); return(rc); } if (*ext->oid == 0) { free(ext->oid); free(ext); return(-1); } ext->next = supp_ext_list; supp_ext_list = ext; return(0); } extensions_list_t * find_extension (extensions_list_t *list, char *oid) { extensions_list_t *ext; for (ext = list; ext; ext = ext->next) { if (strcmp(ext->oid, oid) == 0) return(ext); } return(NULL); } int extensions_callback (extensions_cookie_t *cookie, int msg, int arg, void *argp) { if (cookie == NULL) return(-1); if (argp == NULL) return(-1); switch (msg) { case 0: /* SLAPD_EXT_GETVERSION */ *(int *)argp = 1; return(0); case 1: /* SLAPD_EXT_GETPROTO */ *(int *)argp = cookie->op->o_protocol; return(0); case 2: /* SLAPD_EXT_GETAUTH */ *(int *)argp = cookie->op->o_authtype; return(0); case 3: /* SLAPD_EXT_GETDN */ *(char **)argp = cookie->op->o_dn; return(0); case 4: /* SLAPD_EXT_GETCLIENT */ if (cookie->conn->c_peer_domain != NULL && *cookie->conn->c_peer_domain != 0) { *(char **)argp = cookie->conn->c_peer_domain; return(0); } if (cookie->conn->c_peer_name != NULL && *cookie->conn->c_peer_name != 0) { *(char **)argp = cookie->conn->c_peer_name; return(0); } break; default: break; } return(-1); } #endif