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php-src/main/php_variables.c
Shane Caraveo 0f3a0dfa52 _SERVER also should not be quoted by magic_quotes_GPC 
also remove an empty if statement
2003-03-30 01:06:54 +00:00

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/*
+----------------------------------------------------------------------+
| PHP Version 4 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2003 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.02 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_02.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 "ext/standard/credits.h"
#include "php_variables.h"
#include "php_globals.h"
#include "php_content_types.h"
#include "SAPI.h"
#include "php_logos.h"
#include "zend_globals.h"
/* for systems that need to override reading of environment variables */
void _php_import_environment_variables(zval *array_ptr TSRMLS_DC);
PHPAPI void (*php_import_environment_variables)(zval *array_ptr TSRMLS_DC) = _php_import_environment_variables;
PHPAPI void php_register_variable(char *var, char *strval, zval *track_vars_array TSRMLS_DC)
{
php_register_variable_safe(var, strval, strlen(strval), track_vars_array TSRMLS_CC);
}
/* binary-safe version */
PHPAPI void php_register_variable_safe(char *var, char *strval, int str_len, zval *track_vars_array TSRMLS_DC)
{
zval new_entry;
assert(strval != NULL);
/* Prepare value */
Z_STRLEN(new_entry) = str_len;
if (PG(magic_quotes_gpc)) {
Z_STRVAL(new_entry) = php_addslashes(strval, Z_STRLEN(new_entry), &Z_STRLEN(new_entry), 0 TSRMLS_CC);
} else {
Z_STRVAL(new_entry) = estrndup(strval, Z_STRLEN(new_entry));
}
Z_TYPE(new_entry) = IS_STRING;
php_register_variable_ex(var, &new_entry, track_vars_array TSRMLS_CC);
}
PHPAPI void php_register_variable_ex(char *var, zval *val, pval *track_vars_array TSRMLS_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;
HashTable *symtable1=NULL;
HashTable *symtable2=NULL;
assert(var != NULL);
if (track_vars_array) {
symtable1 = Z_ARRVAL_P(track_vars_array);
}
if (PG(register_globals)) {
if (symtable1) {
symtable2 = EG(active_symbol_table);
} else {
symtable1 = EG(active_symbol_table);
}
}
if (!symtable1) {
/* Nothing to do */
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;
while (1) {
if (is_array) {
char *escaped_index = NULL, *index_s;
int new_idx_len = 0;
ip++;
index_s = ip;
if (isspace(*ip)) {
ip++;
}
if (*ip==']') {
index_s = NULL;
} else {
ip = strchr(ip, ']');
if (!ip) {
/* PHP variables cannot contain '[' in their names, so we replace the character with a '_' */
*(index_s - 1) = '_';
index_len = var_len = strlen(var);
goto plain_var;
return;
}
*ip = 0;
new_idx_len = strlen(index_s);
}
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 TSRMLS_CC);
} else {
escaped_index = index;
}
if (zend_hash_find(symtable1, escaped_index, index_len+1, (void **) &gpc_element_p)==FAILURE
|| Z_TYPE_PP(gpc_element_p) != 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 = Z_ARRVAL_PP(gpc_element_p);
/* ip pointed to the '[' character, now obtain the key */
index = index_s;
index_len = new_idx_len;
ip++;
if (*ip=='[') {
is_array = 1;
*ip = 0;
} else {
is_array = 0;
}
} else {
plain_var:
MAKE_STD_ZVAL(gpc_element);
gpc_element->value = val->value;
Z_TYPE_P(gpc_element) = Z_TYPE_P(val);
if (!index) {
zend_hash_next_index_insert(symtable1, &gpc_element, sizeof(zval *), (void **) &gpc_element_p);
} else {
zend_hash_update(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(symtable2, var, var_len+1, top_gpc_p, sizeof(zval *), NULL);
(*top_gpc_p)->refcount++;
}
}
}
SAPI_API SAPI_POST_HANDLER_FUNC(php_std_post_handler)
{
char *var, *val;
char *strtok_buf = NULL;
zval *array_ptr = (zval *) arg;
if (SG(request_info).post_data==NULL) {
return;
}
var = php_strtok_r(SG(request_info).post_data, "&", &strtok_buf);
while (var) {
val = strchr(var, '=');
if (val) { /* have a value */
int val_len;
*val++ = '\0';
php_url_decode(var, strlen(var));
val_len = php_url_decode(val, strlen(val));
val_len = sapi_module.input_filter(PARSE_POST, var, &val, val_len TSRMLS_CC);
php_register_variable_safe(var, val, val_len, array_ptr TSRMLS_CC);
}
var = php_strtok_r(NULL, "&", &strtok_buf);
}
}
SAPI_API SAPI_INPUT_FILTER_FUNC(php_default_input_filter)
{
/* TODO: check .ini setting here and apply user-defined input filter */
return val_len;
}
SAPI_API SAPI_TREAT_DATA_FUNC(php_default_treat_data)
{
char *res = NULL, *var, *val, *separator=NULL;
const char *c_var;
pval *array_ptr;
int free_buffer=0;
char *strtok_buf = NULL;
switch (arg) {
case PARSE_POST:
case PARSE_GET:
case PARSE_COOKIE:
ALLOC_ZVAL(array_ptr);
array_init(array_ptr);
INIT_PZVAL(array_ptr);
switch (arg) {
case PARSE_POST:
PG(http_globals)[TRACK_VARS_POST] = array_ptr;
break;
case PARSE_GET:
PG(http_globals)[TRACK_VARS_GET] = array_ptr;
break;
case PARSE_COOKIE:
PG(http_globals)[TRACK_VARS_COOKIE] = array_ptr;
break;
}
break;
default:
array_ptr=destArray;
break;
}
if (arg==PARSE_POST) {
sapi_handle_post(array_ptr TSRMLS_CC);
return;
}
if (arg == PARSE_GET) { /* GET data */
c_var = SG(request_info).query_string;
if (c_var && *c_var) {
res = (char *) estrdup(c_var);
free_buffer = 1;
} else {
free_buffer = 0;
}
} else if (arg == PARSE_COOKIE) { /* Cookie data */
c_var = SG(request_info).cookie_data;
if (c_var && *c_var) {
res = (char *) estrdup(c_var);
free_buffer = 1;
} else {
free_buffer = 0;
}
} else if (arg == PARSE_STRING) { /* String data */
res = str;
free_buffer = 1;
}
if (!res) {
return;
}
switch (arg) {
case PARSE_GET:
case PARSE_STRING:
separator = (char *) estrdup(PG(arg_separator).input);
break;
case PARSE_COOKIE:
separator = ";\0";
break;
}
var = php_strtok_r(res, separator, &strtok_buf);
while (var) {
val = strchr(var, '=');
if (val) { /* have a value */
int val_len;
*val++ = '\0';
php_url_decode(var, strlen(var));
val_len = php_url_decode(val, strlen(val));
val_len = sapi_module.input_filter(arg, var, &val, val_len TSRMLS_CC);
php_register_variable_safe(var, val, val_len, array_ptr TSRMLS_CC);
} else {
php_url_decode(var, strlen(var));
php_register_variable_safe(var, "", 0, array_ptr TSRMLS_CC);
}
var = php_strtok_r(NULL, separator, &strtok_buf);
}
if(arg != PARSE_COOKIE) {
efree(separator);
}
if (free_buffer) {
efree(res);
}
}
void _php_import_environment_variables(zval *array_ptr TSRMLS_DC)
{
char buf[128];
char **env, *p, *t = buf;
size_t alloc_size = sizeof(buf);
unsigned long nlen; /* ptrdiff_t is not portable */
/* turn off magic_quotes while importing environment variables */
int magic_quotes_gpc = PG(magic_quotes_gpc);
PG(magic_quotes_gpc) = 0;
for (env = environ; env != NULL && *env != NULL; env++) {
p = strchr(*env, '=');
if (!p) { /* malformed entry? */
continue;
}
nlen = p - *env;
if (nlen >= alloc_size) {
alloc_size = nlen + 64;
t = (t == buf ? emalloc(alloc_size): erealloc(t, alloc_size));
}
memcpy(t, *env, nlen);
t[nlen] = '\0';
php_register_variable(t, p+1, array_ptr TSRMLS_CC);
}
if (t != buf && t != NULL) {
efree(t);
}
PG(magic_quotes_gpc) = magic_quotes_gpc;
}
zend_bool php_std_auto_global_callback(char *name, uint name_len TSRMLS_DC)
{
zend_printf("%s\n", name);
return 0; /* don't rearm */
}
/* {{{ php_build_argv
*/
static void php_build_argv(char *s, zval *track_vars_array TSRMLS_DC)
{
pval *arr, *argc, *tmp;
int count = 0;
char *ss, *space;
ALLOC_ZVAL(arr);
array_init(arr);
INIT_PZVAL(arr);
/* Prepare argv */
if (SG(request_info).argc) { /* are we in cli sapi? */
int i;
for (i=0; i<SG(request_info).argc; i++) {
ALLOC_ZVAL(tmp);
Z_TYPE_P(tmp) = IS_STRING;
Z_STRLEN_P(tmp) = strlen(SG(request_info).argv[i]);
Z_STRVAL_P(tmp) = estrndup(SG(request_info).argv[i], Z_STRLEN_P(tmp));
INIT_PZVAL(tmp);
if (zend_hash_next_index_insert(Z_ARRVAL_P(arr), &tmp, sizeof(pval *), NULL)==FAILURE) {
if (Z_TYPE_P(tmp) == IS_STRING) {
efree(Z_STRVAL_P(tmp));
}
}
}
} else if (s && *s) {
ss = s;
while (ss) {
space = strchr(ss, '+');
if (space) {
*space = '\0';
}
/* auto-type */
ALLOC_ZVAL(tmp);
Z_TYPE_P(tmp) = IS_STRING;
Z_STRLEN_P(tmp) = strlen(ss);
Z_STRVAL_P(tmp) = estrndup(ss, Z_STRLEN_P(tmp));
INIT_PZVAL(tmp);
count++;
if (zend_hash_next_index_insert(Z_ARRVAL_P(arr), &tmp, sizeof(pval *), NULL)==FAILURE) {
if (Z_TYPE_P(tmp) == IS_STRING) {
efree(Z_STRVAL_P(tmp));
}
}
if (space) {
*space = '+';
ss = space + 1;
} else {
ss = space;
}
}
}
/* prepare argc */
ALLOC_ZVAL(argc);
if (SG(request_info).argc) {
Z_LVAL_P(argc) = SG(request_info).argc;
} else {
Z_LVAL_P(argc) = count;
}
Z_TYPE_P(argc) = IS_LONG;
INIT_PZVAL(argc);
if (PG(register_globals) || SG(request_info).argc) {
arr->refcount++;
argc->refcount++;
zend_hash_update(&EG(symbol_table), "argv", sizeof("argv"), &arr, sizeof(zval *), NULL);
zend_hash_add(&EG(symbol_table), "argc", sizeof("argc"), &argc, sizeof(zval *), NULL);
}
zend_hash_update(Z_ARRVAL_P(track_vars_array), "argv", sizeof("argv"), &arr, sizeof(pval *), NULL);
zend_hash_update(Z_ARRVAL_P(track_vars_array), "argc", sizeof("argc"), &argc, sizeof(pval *), NULL);
}
/* }}} */
/* {{{ php_handle_special_queries
*/
PHPAPI int php_handle_special_queries(TSRMLS_D)
{
if (SG(request_info).query_string && SG(request_info).query_string[0]=='='
&& PG(expose_php)) {
if (php_info_logos(SG(request_info).query_string+1 TSRMLS_CC)) {
return 1;
} else if (!strcmp(SG(request_info).query_string+1, PHP_CREDITS_GUID)) {
php_print_credits(PHP_CREDITS_ALL TSRMLS_CC);
return 1;
}
}
return 0;
}
/* }}} */
/* {{{ php_register_server_variables
*/
static inline void php_register_server_variables(TSRMLS_D)
{
zval *array_ptr=NULL;
/* turn off magic_quotes while importing server variables */
int magic_quotes_gpc = PG(magic_quotes_gpc);
ALLOC_ZVAL(array_ptr);
array_init(array_ptr);
INIT_PZVAL(array_ptr);
PG(http_globals)[TRACK_VARS_SERVER] = array_ptr;
PG(magic_quotes_gpc) = 0;
/* Server variables */
if (sapi_module.register_server_variables) {
sapi_module.register_server_variables(array_ptr TSRMLS_CC);
}
/* argv/argc support */
if (PG(register_argc_argv)) {
php_build_argv(SG(request_info).query_string, array_ptr TSRMLS_CC);
}
/* PHP Authentication support */
if (SG(request_info).auth_user) {
php_register_variable("PHP_AUTH_USER", SG(request_info).auth_user, array_ptr TSRMLS_CC);
}
if (SG(request_info).auth_password) {
php_register_variable("PHP_AUTH_PW", SG(request_info).auth_password, array_ptr TSRMLS_CC);
}
PG(magic_quotes_gpc) = magic_quotes_gpc;
}
/* }}} */
static zend_bool php_auto_globals_create_server(char *name, uint name_len TSRMLS_DC);
static zend_bool php_auto_globals_create_env(char *name, uint name_len TSRMLS_DC);
static zend_bool php_auto_globals_create_request(char *name, uint name_len TSRMLS_DC);
/* {{{ php_hash_environment
*/
int php_hash_environment(TSRMLS_D)
{
char *p;
unsigned char _gpc_flags[3] = {0, 0, 0};
zend_bool have_variables_order;
zval *dummy_track_vars_array = NULL;
zend_bool initialized_dummy_track_vars_array=0;
zend_bool jit_initialization = (!PG(register_globals) && !PG(register_long_arrays));
char *variables_order;
struct auto_global_record {
char *name;
uint name_len;
char *long_name;
uint long_name_len;
zend_bool jit_initialization;
} auto_global_records[] = {
{ "_POST", sizeof("_POST"), "HTTP_POST_VARS", sizeof("HTTP_POST_VARS"), 0 },
{ "_GET", sizeof("_GET"), "HTTP_GET_VARS", sizeof("HTTP_GET_VARS"), 0 },
{ "_COOKIE", sizeof("_COOKIE"), "HTTP_COOKIE_VARS", sizeof("HTTP_COOKIE_VARS"), 0 },
{ "_SERVER", sizeof("_SERVER"), "HTTP_SERVER_VARS", sizeof("HTTP_SERVER_VARS"), 1 },
{ "_ENV", sizeof("_ENV"), "HTTP_ENV_VARS", sizeof("HTTP_ENV_VARS"), 1 },
{ "_FILES", sizeof("_FILES"), "HTTP_POST_FILES", sizeof("HTTP_POST_FILES"), 0 },
};
size_t num_track_vars = sizeof(auto_global_records)/sizeof(struct auto_global_record);
size_t i;
/* jit_initialization = 0; */
for (i=0; i<num_track_vars; i++) {
PG(http_globals)[i] = NULL;
}
if (PG(variables_order)) {
variables_order = PG(variables_order);
have_variables_order=1;
} else {
variables_order = PG(gpc_order);
have_variables_order=0;
ALLOC_ZVAL(PG(http_globals)[TRACK_VARS_ENV]);
array_init(PG(http_globals)[TRACK_VARS_ENV]);
INIT_PZVAL(PG(http_globals)[TRACK_VARS_ENV]);
php_import_environment_variables(PG(http_globals)[TRACK_VARS_ENV] TSRMLS_CC);
}
for (p=variables_order; p && *p; p++) {
switch(*p) {
case 'p':
case 'P':
if (!_gpc_flags[0] && !SG(headers_sent) && SG(request_info).request_method && !strcasecmp(SG(request_info).request_method, "POST")) {
sapi_module.treat_data(PARSE_POST, NULL, NULL TSRMLS_CC); /* POST Data */
_gpc_flags[0]=1;
}
break;
case 'c':
case 'C':
if (!_gpc_flags[1]) {
sapi_module.treat_data(PARSE_COOKIE, NULL, NULL TSRMLS_CC); /* Cookie Data */
_gpc_flags[1]=1;
}
break;
case 'g':
case 'G':
if (!_gpc_flags[2]) {
sapi_module.treat_data(PARSE_GET, NULL, NULL TSRMLS_CC); /* GET Data */
_gpc_flags[2]=1;
}
break;
case 'e':
case 'E':
if (!jit_initialization) {
if (have_variables_order) {
php_auto_globals_create_env("_ENV", sizeof("_ENV")-1 TSRMLS_CC);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unsupported 'e' element (environment) used in gpc_order - use variables_order instead");
}
}
break;
case 's':
case 'S':
if (!jit_initialization) {
php_register_server_variables(TSRMLS_C);
}
break;
}
}
if (!jit_initialization && !have_variables_order) {
php_register_server_variables(TSRMLS_C);
}
for (i=0; i<num_track_vars; i++) {
if (jit_initialization && auto_global_records[i].jit_initialization) {
continue;
}
if (!PG(http_globals)[i]) {
if (!initialized_dummy_track_vars_array) {
ALLOC_ZVAL(dummy_track_vars_array);
array_init(dummy_track_vars_array);
INIT_PZVAL(dummy_track_vars_array);
initialized_dummy_track_vars_array = 1;
} else {
dummy_track_vars_array->refcount++;
}
PG(http_globals)[i] = dummy_track_vars_array;
}
zend_hash_update(&EG(symbol_table), auto_global_records[i].name, auto_global_records[i].name_len, &PG(http_globals)[i], sizeof(zval *), NULL);
PG(http_globals)[i]->refcount++;
if (PG(register_long_arrays)) {
zend_hash_update(&EG(symbol_table), auto_global_records[i].long_name, auto_global_records[i].long_name_len, &PG(http_globals)[i], sizeof(zval *), NULL);
PG(http_globals)[i]->refcount++;
}
}
/* Create _REQUEST */
if (!jit_initialization) {
php_auto_globals_create_request("_REQUEST", sizeof("_REQUEST")-1 TSRMLS_CC);
}
return SUCCESS;
}
/* }}} */
static zend_bool php_auto_globals_create_server(char *name, uint name_len TSRMLS_DC)
{
php_register_server_variables(TSRMLS_C);
zend_hash_update(&EG(symbol_table), name, name_len+1, &PG(http_globals)[TRACK_VARS_SERVER], sizeof(zval *), NULL);
PG(http_globals)[TRACK_VARS_SERVER]->refcount++;
if (PG(register_long_arrays)) {
zend_hash_update(&EG(symbol_table), "HTTP_SERVER_VARS", sizeof("HTTP_SERVER_VARS"), &PG(http_globals)[TRACK_VARS_SERVER], sizeof(zval *), NULL);
PG(http_globals)[TRACK_VARS_SERVER]->refcount++;
}
return 0; /* don't rearm */
}
static zend_bool php_auto_globals_create_env(char *name, uint name_len TSRMLS_DC)
{
ALLOC_ZVAL(PG(http_globals)[TRACK_VARS_ENV]);
array_init(PG(http_globals)[TRACK_VARS_ENV]);
INIT_PZVAL(PG(http_globals)[TRACK_VARS_ENV]);
php_import_environment_variables(PG(http_globals)[TRACK_VARS_ENV] TSRMLS_CC);
zend_hash_update(&EG(symbol_table), name, name_len+1, &PG(http_globals)[TRACK_VARS_ENV], sizeof(zval *), NULL);
PG(http_globals)[TRACK_VARS_ENV]->refcount++;
if (PG(register_long_arrays)) {
zend_hash_update(&EG(symbol_table), "HTTP_ENV_VARS", sizeof("HTTP_ENV_VARS"), &PG(http_globals)[TRACK_VARS_ENV], sizeof(zval *), NULL);
PG(http_globals)[TRACK_VARS_ENV]->refcount++;
}
return 0; /* don't rearm */
}
static zend_bool php_auto_globals_create_request(char *name, uint name_len TSRMLS_DC)
{
zval *form_variables;
char *variables_order;
char *p;
if (PG(variables_order)) {
variables_order = PG(variables_order);
} else {
variables_order = PG(gpc_order);
}
ALLOC_ZVAL(form_variables);
array_init(form_variables);
INIT_PZVAL(form_variables);
for (p=variables_order; p && *p; p++) {
switch (*p) {
case 'g':
case 'G':
zend_hash_merge(Z_ARRVAL_P(form_variables), Z_ARRVAL_P(PG(http_globals)[TRACK_VARS_GET]), (void (*)(void *pData)) zval_add_ref, NULL, sizeof(zval *), 1);
break;
case 'p':
case 'P':
zend_hash_merge(Z_ARRVAL_P(form_variables), Z_ARRVAL_P(PG(http_globals)[TRACK_VARS_POST]), (void (*)(void *pData)) zval_add_ref, NULL, sizeof(zval *), 1);
break;
case 'c':
case 'C':
zend_hash_merge(Z_ARRVAL_P(form_variables), Z_ARRVAL_P(PG(http_globals)[TRACK_VARS_COOKIE]), (void (*)(void *pData)) zval_add_ref, NULL, sizeof(zval *), 1);
break;
}
}
zend_hash_update(&EG(symbol_table), "_REQUEST", sizeof("_REQUEST"), &form_variables, sizeof(zval *), NULL);
return 0;
}
void php_startup_auto_globals(TSRMLS_D)
{
zend_bool cb = (!PG(register_globals) && !PG(register_long_arrays));
/*cb = 0;*/
zend_register_auto_global("_GET", sizeof("_GET")-1, NULL TSRMLS_CC);
zend_register_auto_global("_POST", sizeof("_POST")-1, NULL TSRMLS_CC);
zend_register_auto_global("_COOKIE", sizeof("_COOKIE")-1, NULL TSRMLS_CC);
zend_register_auto_global("_SERVER", sizeof("_SERVER")-1, cb?php_auto_globals_create_server:NULL TSRMLS_CC);
zend_register_auto_global("_ENV", sizeof("_ENV")-1, cb?php_auto_globals_create_env:NULL TSRMLS_CC);
zend_register_auto_global("_REQUEST", sizeof("_REQUEST")-1, cb?php_auto_globals_create_request:NULL TSRMLS_CC);
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
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