php-src/ext/standard/browscap.c

/*
   +----------------------------------------------------------------------+
   | PHP version 4.0                                                      |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997, 1998, 1999, 2000 The PHP Group                   |
   +----------------------------------------------------------------------+
   | This source file is subject to version 2.0 of the PHP license,       |
   | that is bundled with this package in the file LICENSE, and is        |
   | available at through the world-wide-web at                           |
   | http://www.php.net/license/2_0.txt.                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: Zeev Suraski <zeev@zend.com>                                |
   +----------------------------------------------------------------------+
 */

#include "php.h"
#include "php_browscap.h"
#include "php_ini.h"

#include "zend_globals.h"

#ifndef THREAD_SAFE
HashTable browser_hash;
static char *lookup_browser_name;
static pval *found_browser_entry;
#endif

function_entry browscap_functions[] = {
	PHP_FE(get_browser,								NULL)
	{NULL, NULL, NULL}
};

zend_module_entry browscap_module_entry = {
	"browscap", browscap_functions, PHP_MINIT(browscap), PHP_MSHUTDOWN(browscap),
	NULL, NULL, NULL, STANDARD_MODULE_PROPERTIES
};


static int browser_reg_compare(pval *browser)
{
	pval *browser_name;
	regex_t r;

	if (found_browser_entry) { /* already found */
		return 0;
	}
	zend_hash_find(browser->value.ht,"browser_name_pattern",sizeof("browser_name_pattern"),(void **) &browser_name);
	if (!strchr(browser_name->value.str.val,'*')) {
		return 0;
	}
	if (regcomp(&r,browser_name->value.str.val,REG_NOSUB)!=0) {
		return 0;
	}
	if (regexec(&r,lookup_browser_name,0,NULL,0)==0) {
		found_browser_entry = browser;
	}
	regfree(&r);
	return 0;
}

PHP_FUNCTION(get_browser)
{
	pval **agent_name,**agent,tmp;

	if (!INI_STR("browscap")) {
		RETURN_FALSE;
	}
	
	switch(ARG_COUNT(ht)) {
		case 0:
			if (zend_hash_find(&EG(symbol_table), "HTTP_USER_AGENT", sizeof("HTTP_USER_AGENT"), (void **) &agent_name)==FAILURE) {
				*agent_name = &tmp;
				var_reset(*agent_name);
			}
			break;
		case 1:
			if (zend_get_parameters_ex(1,&agent_name)==FAILURE) {
				RETURN_FALSE;
			}
			break;
		default:
			WRONG_PARAM_COUNT;
			break;
	}
	
	convert_to_string_ex(agent_name);

	if (zend_hash_find(&browser_hash, (*agent_name)->value.str.val,(*agent_name)->value.str.len+1, (void **) &agent)==FAILURE) {
		lookup_browser_name = (*agent_name)->value.str.val;
		found_browser_entry = NULL;
		zend_hash_apply(&browser_hash,(int (*)(void *)) browser_reg_compare);
		
		if (found_browser_entry) {
			*agent = found_browser_entry;
		} else if (zend_hash_find(&browser_hash, "Default Browser", sizeof("Default Browser"), (void **) &agent)==FAILURE) {
			RETURN_FALSE;
		}
	}
	
	*return_value = **agent;
	return_value->type = IS_OBJECT;
	pval_copy_constructor(return_value);
	return_value->value.ht->pDestructor = ZVAL_DESTRUCTOR;

	while (zend_hash_find((*agent)->value.ht, "parent",sizeof("parent"), (void **) &agent_name)==SUCCESS) {
		if (zend_hash_find(&browser_hash,(*agent_name)->value.str.val, (*agent_name)->value.str.len+1, (void **)&agent)==FAILURE) {
			break;
		}
		zend_hash_merge(return_value->value.ht,(*agent)->value.ht, ZVAL_COPY_CTOR, (void *) &tmp, sizeof(pval), 0);
	}
}


/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 */