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/* 
   Unix SMB/CIFS mplementation.
   LDAP protocol helper functions for SAMBA
   
   Copyright (C) Stefan Metzmacher 2004
   Copyright (C) Simo Sorce 2004
    
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   
*/

#include "includes.h"
#include "asn_1.h"

NTSTATUS torture_ldap_bind(struct ldap_connection *conn, const char *userdn, const char *password)
{
        NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
	int result;

	if (!conn) {
		printf("We need a valid ldap_connection structure and be connected\n");
		return status;
	}

	result = ldap_bind_simple(conn, userdn, password);
	if (result != LDAP_SUCCESS) {
		printf("Failed to bind with provided credentials\n");
		/* FIXME: what abut actually implementing an ldap_connection_free() function ?
		          :-) sss */
		return status;
	}
 
	return NT_STATUS_OK;
}

NTSTATUS torture_ldap_bind_sasl(struct ldap_connection *conn, const char *username, const char *domain, const char *password)
{
        NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
	int result;

	if (!conn) {
		printf("We need a valid ldap_connection structure and be connected\n");
		return status;
	}

	result = ldap_bind_sasl(conn, username, domain, password);
	if (result != LDAP_SUCCESS) {
		printf("Failed to bind with provided credentialsi and SASL mechanism\n");
		/* FIXME: what abut actually implementing an ldap_connection_free() function ?
		          :-) sss */
		return status;
	}
 
	return NT_STATUS_OK;
}

/* open a ldap connection to a server */
NTSTATUS torture_ldap_connection(struct ldap_connection **conn, 
				const char *url, const char *userdn, const char *password)
{
        NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
	BOOL ret;

	if (!url) {
		printf("You must specify a url string\n");
		return NT_STATUS_INVALID_PARAMETER;
	}

	*conn = new_ldap_connection();
	if (!*conn) {
		printf("Failed to initialize ldap_connection structure\n");
		return status;
	}

	ret = ldap_setup_connection(*conn, url, userdn, password);
	if (!ret) {
		printf("Failed to connect with url [%s]\n", url);
		/* FIXME: what abut actually implementing an ldap_connection_free() function ?
		          :-) sss */
		return status;
	}
 
	return NT_STATUS_OK;
}

/* close an ldap connection to a server */
NTSTATUS torture_ldap_close(struct ldap_connection *conn)
{
	/* FIXME: what about actually implementing ldap_close() ?
		  :-) sss */
	return NT_STATUS_OK;
}

BOOL ldap_sasl_send_msg(struct ldap_connection *conn, struct ldap_message *msg,
		   const struct timeval *endtime)
{
	NTSTATUS status;
	DATA_BLOB request;
	BOOL result;
	DATA_BLOB creds;
	DATA_BLOB pdu;
	int len;
	struct asn1_data asn1;
	TALLOC_CTX *mem_ctx;

	msg->messageid = conn->next_msgid++;

	if (!ldap_encode(msg, &request))
		return False;

	status = gensec_seal_packet(conn->gensec, 
				    msg->mem_ctx, 
				    request.data, request.length,
				    request.data, request.length,
				    &creds);
	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(0,("gensec_seal_packet: %s\n",nt_errstr(status)));
		return False;
	}

	len = 4 + creds.length + request.length;
	pdu = data_blob_talloc(msg->mem_ctx, NULL, len);
	RSIVAL(pdu.data, 0, len-4);
	memcpy(pdu.data + 4, creds.data, creds.length);
	memcpy(pdu.data + 4 + creds.length, request.data, request.length);

	result = (write_data_until(conn->sock, pdu.data, pdu.length,
				   endtime) == pdu.length);
	if (!result)
		return result;

	pdu = data_blob(NULL, 0x4000);
	data_blob_clear(&pdu);

	result = (read_data_until(conn->sock, pdu.data, 4, NULL) == 4);
	if (!result)
		return result;

	len = RIVAL(pdu.data,0);

	result = (read_data_until(conn->sock, pdu.data + 4, MIN(0x4000,len), NULL) == len);
	if (!result)
		return result;

	pdu.length = 4+len;

	creds = data_blob(pdu.data + 4 , gensec_sig_size(conn->gensec));

	request = data_blob(pdu.data + (4 + creds.length), pdu.length - (4 + creds.length));

	status = gensec_unseal_packet(conn->gensec,
			     msg->mem_ctx,
			     request.data, request.length,
			     request.data, request.length,
			     &creds);
	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(0,("gensec_unseal_packet: %s\n",nt_errstr(status)));
		return False;
	}

	mem_ctx = msg->mem_ctx;
	ZERO_STRUCTP(msg);
	msg->mem_ctx = mem_ctx;

	asn1_load(&asn1, request);
	if (!ldap_decode(&asn1, msg)) {
		return False;
	}

	result = True;

	return result;
}