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php-src/main/php_variables.c
Zeev Suraski 583556a3c2 @- Switched back to the old $HTTP_*_VARS[] behavior - $HTTP_GET_VARS["foo"] 
@  and $foo are no longer references to each other, but separate variables
@  like they were prior to PHP 4.0 Beta 4 (Zeev)
2000-02-28 05:33:43 +00:00

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/*
+----------------------------------------------------------------------+
| PHP version 4.0 |
+----------------------------------------------------------------------+
| Copyright (c) 1997, 1998, 1999, 2000 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.01 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_01.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: Rasmus Lerdorf <rasmus@lerdorf.on.ca> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id: */
#include <stdio.h>
#include "php.h"
#include "ext/standard/php_standard.h"
#include "php_variables.h"
#include "php_globals.h"
#include "SAPI.h"
#include "zend_globals.h"
PHPAPI void php_register_variable(char *var, char *strval, zval *track_vars_array ELS_DC PLS_DC)
{
zval new_entry;
/* Prepare value */
new_entry.value.str.len = strlen(strval);
if (PG(magic_quotes_gpc)) {
new_entry.value.str.val = php_addslashes(strval, new_entry.value.str.len, &new_entry.value.str.len, 0);
} else {
new_entry.value.str.val = estrndup(strval, new_entry.value.str.len);
}
new_entry.type = IS_STRING;
php_register_variable_ex(var, &new_entry, track_vars_array ELS_CC PLS_CC);
}
PHPAPI void php_register_variable_ex(char *var, zval *val, pval *track_vars_array ELS_DC PLS_DC)
{
char *p = NULL;
char *ip; /* index pointer */
char *index;
int var_len, index_len;
zval *gpc_element, **gpc_element_p, **top_gpc_p=NULL;
zend_bool is_array;
zend_bool free_index;
HashTable *symtable1=NULL;
HashTable *symtable2=NULL;
if (PG(register_globals)) {
symtable1 = EG(active_symbol_table);
}
if (track_vars_array) {
if (symtable1) {
symtable2 = track_vars_array->value.ht;
} else {
symtable1 = track_vars_array->value.ht;
}
}
if (!symtable1) {
/* we don't need track_vars, and we're not setting GPC globals either. */
zval_dtor(val);
return;
}
/*
* Prepare variable name
*/
ip = strchr(var, '[');
if (ip) {
is_array = 1;
*ip = 0;
} else {
is_array = 0;
}
/* ignore leading spaces in the variable name */
while (*var && *var==' ') {
var++;
}
var_len = strlen(var);
if (var_len==0) { /* empty variable name, or variable name with a space in it */
zval_dtor(val);
return;
}
/* ensure that we don't have spaces or dots in the variable name (not binary safe) */
for (p=var; *p; p++) {
switch(*p) {
case ' ':
case '.':
*p='_';
break;
}
}
index = var;
index_len = var_len;
free_index = 0;
while (1) {
if (is_array) {
char *escaped_index;
if (!index) {
MAKE_STD_ZVAL(gpc_element);
array_init(gpc_element);
zend_hash_next_index_insert(symtable1, &gpc_element, sizeof(zval *), (void **) &gpc_element_p);
} else {
if (PG(magic_quotes_gpc) && (index!=var)) {
/* no need to addslashes() the index if it's the main variable name */
escaped_index = php_addslashes(index, index_len, &index_len, 0);
} else {
escaped_index = index;
}
if (zend_hash_find(symtable1, escaped_index, index_len+1, (void **) &gpc_element_p)==FAILURE
|| (*gpc_element_p)->type != IS_ARRAY) {
MAKE_STD_ZVAL(gpc_element);
array_init(gpc_element);
zend_hash_update(symtable1, escaped_index, index_len+1, &gpc_element, sizeof(zval *), (void **) &gpc_element_p);
}
if (index!=escaped_index) {
efree(escaped_index);
}
}
if (!top_gpc_p) {
top_gpc_p = gpc_element_p;
}
symtable1 = (*gpc_element_p)->value.ht;
/* ip pointed to the '[' character, now obtain the key */
index = ++ip;
index_len = 0;
if (*ip=='\n' || *ip=='\r' || *ip=='\t' || *ip==' ') {
ip++;
}
if (*ip==']') {
index = NULL;
} else {
ip = strchr(ip, ']');
if (!ip) {
php_error(E_WARNING, "Missing ] in %s variable", var);
return;
}
*ip = 0;
index_len = strlen(index);
}
ip++;
if (*ip=='[') {
is_array = 1;
*ip = 0;
} else {
is_array = 0;
}
} else {
MAKE_STD_ZVAL(gpc_element);
gpc_element->value = val->value;
gpc_element->type = val->type;
if (!index) {
zend_hash_next_index_insert(symtable1, &gpc_element, sizeof(zval *), (void **) &gpc_element_p);
} else {
zend_hash_update_ptr(symtable1, index, index_len+1, gpc_element, sizeof(zval *), (void **) &gpc_element_p);
}
if (!top_gpc_p) {
top_gpc_p = gpc_element_p;
}
break;
}
}
if (top_gpc_p) {
if (symtable2) {
zend_hash_update_ptr(symtable2, var, var_len+1, *top_gpc_p, sizeof(zval *), NULL);
(*top_gpc_p)->refcount++;
}
}
}
SAPI_POST_HANDLER_FUNC(php_std_post_handler)
{
char *var, *val;
char *strtok_buf = NULL;
zval *array_ptr = (zval *) arg;
ELS_FETCH();
PLS_FETCH();
var = strtok_r(SG(request_info).post_data, "&", &strtok_buf);
while (var) {
val = strchr(var, '=');
if (val) { /* have a value */
*val++ = '\0';
/* FIXME: XXX: not binary safe, discards returned length */
php_url_decode(var, strlen(var));
php_url_decode(val, strlen(val));
php_register_variable(var, val, array_ptr ELS_CC PLS_CC);
}
var = strtok_r(NULL, "&", &strtok_buf);
}
}
void php_treat_data(int arg, char *str ELS_DC PLS_DC SLS_DC)
{
char *res = NULL, *var, *val;
pval *array_ptr;
int free_buffer=0;
char *strtok_buf = NULL;
switch (arg) {
case PARSE_POST:
case PARSE_GET:
case PARSE_COOKIE:
if (PG(track_vars)) {
ALLOC_ZVAL(array_ptr);
array_init(array_ptr);
INIT_PZVAL(array_ptr);
switch (arg) {
case PARSE_POST:
PG(http_globals).post = array_ptr;
break;
case PARSE_GET:
PG(http_globals).get = array_ptr;
break;
case PARSE_COOKIE:
PG(http_globals).cookie = array_ptr;
break;
}
} else {
array_ptr=NULL;
}
break;
default:
array_ptr=NULL;
break;
}
if (arg==PARSE_POST) {
sapi_handle_post(array_ptr SLS_CC);
return;
}
if (arg == PARSE_GET) { /* GET data */
var = SG(request_info).query_string;
if (var && *var) {
res = (char *) estrdup(var);
free_buffer = 1;
} else {
free_buffer = 0;
}
} else if (arg == PARSE_COOKIE) { /* Cookie data */
var = SG(request_info).cookie_data;
if (var && *var) {
res = (char *) estrdup(var);
free_buffer = 1;
} else {
free_buffer = 0;
}
} else if (arg == PARSE_STRING) { /* String data */
res = str;
free_buffer = 1;
}
if (!res) {
return;
}
if (arg == PARSE_COOKIE) {
var = strtok_r(res, ";", &strtok_buf);
} else if (arg == PARSE_POST) {
var = strtok_r(res, "&", &strtok_buf);
} else {
var = strtok_r(res, PG(arg_separator), &strtok_buf);
}
while (var) {
val = strchr(var, '=');
if (val) { /* have a value */
*val++ = '\0';
/* FIXME: XXX: not binary safe, discards returned length */
php_url_decode(var, strlen(var));
php_url_decode(val, strlen(val));
php_register_variable(var, val, array_ptr ELS_CC PLS_CC);
}
if (arg == PARSE_COOKIE) {
var = strtok_r(NULL, ";", &strtok_buf);
} else {
var = strtok_r(NULL, PG(arg_separator), &strtok_buf);
}
}
if (free_buffer) {
efree(res);
}
}
void php_import_environment_variables(ELS_D PLS_DC)
{
char **env, *p, *t;
zval *array_ptr=NULL;
if (PG(track_vars)) {
ALLOC_ZVAL(array_ptr);
array_init(array_ptr);
INIT_PZVAL(array_ptr);
PG(http_globals).environment = array_ptr;
}
for (env = environ; env != NULL && *env != NULL; env++) {
p = strchr(*env, '=');
if (!p) { /* malformed entry? */
continue;
}
t = estrndup(*env, p - *env);
php_register_variable(t, p+1, array_ptr ELS_CC PLS_CC);
efree(t);
}
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
*/
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