rlm_sql.c

RADIUS 服务器介绍 RADIUS服务器支持标准的RADIUS协议

		if (row[0] == NULL){
			DEBUG("rlm_sql (%s): row[0] returned NULL",
			      inst->config->xlat_name);
			(inst->module->sql_finish_select_query)(sqlsocket, inst->config);
			sql_release_socket(inst, sqlsocket);
			return 1;
		}
		if (strcmp(row[0],check->strvalue) == 0){
			DEBUG("rlm_sql (%s): - sql_groupcmp finished: User belongs in group %s",
			      inst->config->xlat_name,
			      (char *)check->strvalue);
			(inst->module->sql_finish_select_query)(sqlsocket, inst->config);			sql_release_socket(inst, sqlsocket);
			return 0;
		}
	}

	(inst->module->sql_finish_select_query)(sqlsocket, inst->config);
	sql_release_socket(inst,sqlsocket);

	DEBUG("rlm_sql (%s): - sql_groupcmp finished: User does not belong in group %s",
	      inst->config->xlat_name, (char *)check->strvalue);

	return 1;
}


static int rlm_sql_instantiate(CONF_SECTION * conf, void **instance)
{
	SQL_INST *inst;
	lt_dlhandle handle;
	char *xlat_name;

	inst = rad_malloc(sizeof(SQL_INST));
	memset(inst, 0, sizeof(SQL_INST));

	inst->config = rad_malloc(sizeof(SQL_CONFIG));
	memset(inst->config, 0, sizeof(SQL_CONFIG));

	/*
	 * If the configuration parameters can't be parsed, then
	 * fail.
	 */
	if (cf_section_parse(conf, inst->config, module_config) < 0) {
		free(inst->config);
		free(inst);
		return -1;
	}

	xlat_name = cf_section_name2(conf);
	if (xlat_name == NULL)
		xlat_name = cf_section_name1(conf);
	if (xlat_name){
		inst->config->xlat_name = strdup(xlat_name);
		xlat_register(xlat_name, sql_xlat, inst);
	}

	if (inst->config->num_sql_socks > MAX_SQL_SOCKS) {
		radlog(L_ERR | L_CONS, "rlm_sql (%s): sql_instantiate: number of sqlsockets cannot exceed MAX_SQL_SOCKS, %d",
		       inst->config->xlat_name, MAX_SQL_SOCKS);
		free(inst->config);
		free(inst);
		return -1;
	}

	handle = lt_dlopenext(inst->config->sql_driver);
	if (handle == NULL) {
		radlog(L_ERR, "rlm_sql (%s): Could not link driver %s: %s",
		       inst->config->xlat_name, inst->config->sql_driver,
		       lt_dlerror());
		radlog(L_ERR, "rlm_sql (%s): Make sure it (and all its dependent libraries!) are in the search path of your system's ld.",
		       inst->config->xlat_name);
		return -1;
	}

	inst->module = (rlm_sql_module_t *) lt_dlsym(handle, inst->config->sql_driver);
	if (!inst->module) {
		radlog(L_ERR, "rlm_sql (%s): Could not link symbol %s: %s",
		       inst->config->xlat_name, inst->config->sql_driver,
		       lt_dlerror());
		return -1;
	}

	radlog(L_INFO, "rlm_sql (%s): Driver %s (module %s) loaded and linked",
	       inst->config->xlat_name, inst->config->sql_driver,
	       inst->module->name);
	radlog(L_INFO, "rlm_sql (%s): Attempting to connect to %s@%s:%s/%s",
	       inst->config->xlat_name, inst->config->sql_login,
	       inst->config->sql_server, inst->config->sql_port,
	       inst->config->sql_db);

	if (sql_init_socketpool(inst) < 0) {
		free(inst->config);
		free(inst);
		return -1;
	}
	paircompare_register(PW_SQL_GROUP, PW_USER_NAME, sql_groupcmp, inst);

	*instance = inst;

	return RLM_MODULE_OK;
}

static int rlm_sql_destroy(void)
{
	return 0;
}

static int rlm_sql_detach(void *instance)
{
	SQL_INST *inst = instance;

	sql_poolfree(inst);
	if (inst->config->xlat_name)
		xlat_unregister(inst->config->xlat_name,sql_xlat);
	paircompare_unregister(PW_SQL_GROUP, sql_groupcmp);
	free(inst->config);
	free(inst);

	return 0;
}


static int rlm_sql_authorize(void *instance, REQUEST * request)
{
	VALUE_PAIR *check_tmp = NULL;
	VALUE_PAIR *reply_tmp = NULL;
	VALUE_PAIR *user_profile = NULL;
	int     found = 0;
	SQLSOCK *sqlsocket;
	SQL_INST *inst = instance;
	char    querystr[MAX_QUERY_LEN];

	/* sqlusername holds the sql escaped username. The original
	 * username is at most MAX_STRING_LEN chars long and
	 * *sql_escape_string doubles its length in the worst case.
	 * Throw in an extra 10 to account for trailing NULs and to have
	 * a safety margin. */
	char   sqlusername[2 * MAX_STRING_LEN + 10];

	/*
	 *	They MUST have a user name to do SQL authorization.
	 */
	if ((request->username == NULL) ||
	    (request->username->length == 0)) {
		radlog(L_ERR, "rlm_sql (%s): zero length username not permitted\n", inst->config->xlat_name);
		return RLM_MODULE_INVALID;
	}


	/*
	 *  After this point, ALL 'return's MUST release the SQL socket!
	 */


	/*
	 * Set, escape, and check the user attr here
	 */
	if (sql_set_user(inst, request, sqlusername, NULL) < 0)
		return RLM_MODULE_FAIL;
	radius_xlat(querystr, sizeof(querystr), inst->config->authorize_check_query, request, sql_escape_func);

	sqlsocket = sql_get_socket(inst);
	if (sqlsocket == NULL) {
		/* Remove the username we (maybe) added above */
		pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
		return(RLM_MODULE_FAIL);
	}

	found = sql_getvpdata(inst, sqlsocket, &check_tmp, querystr, PW_VP_USERDATA);
	/*
	 *      Find the entry for the user.
	 */
	if (found > 0) {
		radius_xlat(querystr, sizeof(querystr), inst->config->authorize_group_check_query, request, sql_escape_func);
		sql_getvpdata(inst, sqlsocket, &check_tmp, querystr, PW_VP_GROUPDATA);
		radius_xlat(querystr, sizeof(querystr), inst->config->authorize_reply_query, request, sql_escape_func);
		sql_getvpdata(inst, sqlsocket, &reply_tmp, querystr, PW_VP_USERDATA);
		radius_xlat(querystr, sizeof(querystr), inst->config->authorize_group_reply_query, request, sql_escape_func);
		sql_getvpdata(inst, sqlsocket, &reply_tmp, querystr, PW_VP_GROUPDATA);
	} else if (found < 0) {
		radlog(L_ERR, "rlm_sql (%s): SQL query error; rejecting user",
		       inst->config->xlat_name);
		sql_release_socket(inst, sqlsocket);
		/* Remove the username we (maybe) added above */
		pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
		return RLM_MODULE_FAIL;

	} else {
		radlog(L_DBG, "rlm_sql (%s): User %s not found in radcheck",
		       inst->config->xlat_name, sqlusername);

                /*
		 * We didn't find the user in radcheck, so we try looking
		 * for radgroupcheck entry
		 */
                radius_xlat(querystr, sizeof(querystr), inst->config->authorize_group_check_query, request, sql_escape_func);
                found = sql_getvpdata(inst, sqlsocket, &check_tmp, querystr, PW_VP_GROUPDATA);
                radius_xlat(querystr, sizeof(querystr), inst->config->authorize_group_reply_query, request, sql_escape_func);
                sql_getvpdata(inst, sqlsocket, &reply_tmp, querystr, PW_VP_GROUPDATA);
        }
	if (!found)
		radlog(L_DBG, "rlm_sql (%s): User %s not found in radgroupcheck",
		       inst->config->xlat_name, sqlusername);
	if (found || (!found && inst->config->query_on_not_found)){
		/*
	 	* Check for a default_profile or for a User-Profile.
		*/
		user_profile = pairfind(request->config_items, PW_USER_PROFILE);
		if (inst->config->default_profile[0] != 0 || user_profile != NULL){
			char *profile = inst->config->default_profile;

			if (user_profile != NULL)
				profile = user_profile->strvalue;
			if (profile && strlen(profile)){
				radlog(L_DBG, "rlm_sql (%s): Checking profile %s",
				       inst->config->xlat_name, profile);
				if (sql_set_user(inst, request, sqlusername, profile) < 0) {
					return RLM_MODULE_FAIL;
				}
				radius_xlat(querystr, sizeof(querystr), inst->config->authorize_group_check_query,
									request, sql_escape_func);
				found = sql_getvpdata(inst, sqlsocket, &check_tmp, querystr, PW_VP_GROUPDATA);
				radius_xlat(querystr, sizeof(querystr), inst->config->authorize_group_reply_query,
									request, sql_escape_func);
				sql_getvpdata(inst, sqlsocket, &reply_tmp, querystr, PW_VP_GROUPDATA);
			}
		}
	}
	if (!found) {
		radlog(L_DBG, "rlm_sql (%s): User not found",
		       inst->config->xlat_name);
		sql_release_socket(inst, sqlsocket);
		/* Remove the username we (maybe) added above */
		pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
		return RLM_MODULE_NOTFOUND;
	}

	/*
	 * Uncomment these lines for debugging
	 * Recompile, and run 'radiusd -X'
	 */

	/*
	DEBUG2("rlm_sql:  check items");
	vp_listdebug(check_tmp);
	DEBUG2("rlm_sql:  reply items");
	vp_listdebug(reply_tmp); 
	*/

	if (paircmp(request, request->packet->vps, check_tmp, &reply_tmp) != 0) {
		radlog(L_INFO, "rlm_sql (%s): No matching entry in the database for request from user [%s]",
		       inst->config->xlat_name, sqlusername);
		/* Remove the username we (maybe) added above */
		pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
		sql_release_socket(inst, sqlsocket);
		pairfree(&reply_tmp);
		pairfree(&check_tmp);
		return RLM_MODULE_NOTFOUND;
	}

	pairmove(&request->reply->vps, &reply_tmp);
	pairmove(&request->config_items, &check_tmp);
	pairfree(&reply_tmp);
	pairfree(&check_tmp);

	/* Remove the username we (maybe) added above */
	pairdelete(&request->packet->vps, PW_SQL_USER_NAME);
	sql_release_socket(inst, sqlsocket);

	return RLM_MODULE_OK;
}

/*
 *	Accounting: save the account data to our sql table
 */
static int rlm_sql_accounting(void *instance, REQUEST * request) {

	SQLSOCK *sqlsocket = NULL;
	VALUE_PAIR *pair;
	SQL_INST *inst = instance;
	int	ret = RLM_MODULE_OK;
	int     numaffected = 0;
	int     acctstatustype = 0;
	char    querystr[MAX_QUERY_LEN];
	char    logstr[MAX_QUERY_LEN];
	char	sqlusername[2 * MAX_STRING_LEN + 10];

#ifdef CISCO_ACCOUNTING_HACK
	int     acctsessiontime = 0;
#endif

	memset(querystr, 0, MAX_QUERY_LEN);

	/*
	 * Find the Acct Status Type
	 */
	if ((pair = pairfind(request->packet->vps, PW_ACCT_STATUS_TYPE)) != NULL) {
		acctstatustype = pair->lvalue;
	} else {
		radius_xlat(logstr, sizeof(logstr), "rlm_sql: packet has no account status type.  [user '%{User-Name}', nas '%{NAS-IP-Address}']", request, sql_escape_func);
		radlog(L_ERR, logstr);
		return RLM_MODULE_INVALID;
	}

	switch (acctstatustype) {
			/*
			 * The Terminal server informed us that it was rebooted
			 * STOP all records from this NAS 
			 */
		case PW_STATUS_ACCOUNTING_ON:
		case PW_STATUS_ACCOUNTING_OFF:
			radlog(L_INFO, "rlm_sql (%s): received Acct On/Off packet", inst->config->xlat_name);
			radius_xlat(querystr, sizeof(querystr), inst->config->accounting_onoff_query, request, sql_escape_func);
			query_log(request, inst, querystr);

			sqlsocket = sql_get_socket(inst);
			if (sqlsocket == NULL)
				return(RLM_MODULE_FAIL);
			if (*querystr) { /* non-empty query */
				if (rlm_sql_query(sqlsocket, inst, querystr)) {
					radlog(L_ERR, "rlm_sql (%s): Couldn't update SQL accounting for Acct On/Off packet - %s",
					       inst->config->xlat_name,
					       (char *)(inst->module->sql_error)(sqlsocket, inst->config));
					ret = RLM_MODULE_FAIL;
				}
				(inst->module->sql_finish_query)(sqlsocket, inst->config);
			}

			break;

			/*
			 * Got an update accounting packet
			 */
		case PW_STATUS_ALIVE:

			/*
			 * Set, escape, and check the user attr here
			 */
			sql_set_user(inst, request, sqlusername, NULL);