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dis-bench / src /php /php-src /ext /mbstring /mb_gpc.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| https://www.php.net/license/3_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. |
+----------------------------------------------------------------------+
| Author: Rui Hirokawa <hirokawa@php.net> |
| Moriyoshi Koizumi <moriyoshi@php.net> |
+----------------------------------------------------------------------+
*/
/* {{{ includes */
#include "php.h"
#include "php_variables.h"
#include "libmbfl/mbfl/mbfilter_pass.h"
#include "mbstring.h"
#include "ext/standard/url.h"
#include "php_globals.h"
#include "TSRM.h"
#include "mb_gpc.h"
/* }}} */
ZEND_EXTERN_MODULE_GLOBALS(mbstring)
/* {{{ MBSTRING_API SAPI_TREAT_DATA_FUNC(mbstr_treat_data)
* http input processing */
MBSTRING_API SAPI_TREAT_DATA_FUNC(mbstr_treat_data)
{
char *res = NULL, *separator=NULL;
const char *c_var;
zval v_array;
int free_buffer=0;
const mbfl_encoding *detected;
php_mb_encoding_handler_info_t info;
if (!MBSTRG(encoding_translation)) {
php_default_treat_data(arg, str, destArray);
return;
}
switch (arg) {
case PARSE_POST:
case PARSE_GET:
case PARSE_COOKIE:
array_init(&v_array);
switch (arg) {
case PARSE_POST:
ZVAL_COPY_VALUE(&PG(http_globals)[TRACK_VARS_POST], &v_array);
break;
case PARSE_GET:
ZVAL_COPY_VALUE(&PG(http_globals)[TRACK_VARS_GET], &v_array);
break;
case PARSE_COOKIE:
ZVAL_COPY_VALUE(&PG(http_globals)[TRACK_VARS_COOKIE], &v_array);
break;
}
break;
default:
ZVAL_COPY_VALUE(&v_array, destArray);
break;
}
switch (arg) {
case PARSE_POST:
sapi_handle_post(&v_array);
return;
case PARSE_GET: /* GET data */
c_var = SG(request_info).query_string;
if (c_var && *c_var) {
res = (char *) estrdup(c_var);
free_buffer = 1;
}
break;
case PARSE_COOKIE: /* Cookie data */
c_var = SG(request_info).cookie_data;
if (c_var && *c_var) {
res = (char *) estrdup(c_var);
free_buffer = 1;
}
break;
case PARSE_STRING: /* String data */
res = str;
free_buffer = 1;
break;
}
if (!res) {
return;
}
switch (arg) {
case PARSE_POST:
case PARSE_GET:
case PARSE_STRING:
separator = estrndup(ZSTR_VAL(PG(arg_separator).input), ZSTR_LEN(PG(arg_separator).input));
break;
case PARSE_COOKIE:
separator = ";\0";
break;
}
switch (arg) {
case PARSE_POST:
MBSTRG(http_input_identify_post) = NULL;
break;
case PARSE_GET:
MBSTRG(http_input_identify_get) = NULL;
break;
case PARSE_COOKIE:
MBSTRG(http_input_identify_cookie) = NULL;
break;
case PARSE_STRING:
MBSTRG(http_input_identify_string) = NULL;
break;
}
info.data_type = arg;
info.separator = separator;
info.report_errors = false;
info.to_encoding = MBSTRG(internal_encoding);
info.from_encodings = MBSTRG(http_input_list);
info.num_from_encodings = MBSTRG(http_input_list_size);
MBSTRG(illegalchars) = 0;
detected = _php_mb_encoding_handler_ex(&info, &v_array, res);
MBSTRG(http_input_identify) = detected;
if (detected) {
switch(arg){
case PARSE_POST:
MBSTRG(http_input_identify_post) = detected;
break;
case PARSE_GET:
MBSTRG(http_input_identify_get) = detected;
break;
case PARSE_COOKIE:
MBSTRG(http_input_identify_cookie) = detected;
break;
case PARSE_STRING:
MBSTRG(http_input_identify_string) = detected;
break;
}
}
if (arg != PARSE_COOKIE) {
efree(separator);
}
if (free_buffer) {
efree(res);
}
}
/* }}} */
/* {{{ mbfl_no_encoding _php_mb_encoding_handler_ex() */
const mbfl_encoding *_php_mb_encoding_handler_ex(const php_mb_encoding_handler_info_t *info, zval *array_ptr, char *res)
{
char *var, *val;
char *strtok_buf = NULL, **val_list = NULL;
size_t n, num = 1, *len_list = NULL;
size_t new_val_len;
const mbfl_encoding *from_encoding = NULL;
if (!res || *res == '\0') {
goto out;
}
/* count variables contained in `res`.
* separator may contain multiple separator chars; ANY of them demarcate variables */
for (char *s1 = res; *s1; s1++) {
for (const char *s2 = info->separator; *s2; s2++) {
if (*s1 == *s2) {
num++;
}
}
}
num *= 2; /* need space for variable name and value */
val_list = (char **)ecalloc(num, sizeof(char *));
len_list = (size_t *)ecalloc(num, sizeof(size_t));
/* split and decode the query */
n = 0;
var = php_strtok_r(res, info->separator, &strtok_buf);
while (var) {
val = strchr(var, '=');
if (val) { /* have a value */
len_list[n] = php_url_decode(var, val-var);
val_list[n] = var;
n++;
*val++ = '\0';
val_list[n] = val;
len_list[n] = php_url_decode(val, strlen(val));
} else {
len_list[n] = php_url_decode(var, strlen(var));
val_list[n] = var;
n++;
val_list[n] = "";
len_list[n] = 0;
}
n++;
var = php_strtok_r(NULL, info->separator, &strtok_buf);
}
zend_long max_input_vars = REQUEST_PARSE_BODY_OPTION_GET(max_input_vars, PG(max_input_vars));
if (ZEND_SIZE_T_GT_ZEND_LONG(n, max_input_vars * 2)) {
php_error_docref(NULL, E_WARNING, "Input variables exceeded " ZEND_LONG_FMT ". To increase the limit change max_input_vars in php.ini.", max_input_vars);
goto out;
}
num = n; /* make sure to process initialized vars only */
/* initialize converter */
if (info->num_from_encodings == 0) {
from_encoding = &mbfl_encoding_pass;
} else if (info->num_from_encodings == 1) {
from_encoding = info->from_encodings[0];
} else {
from_encoding = mb_guess_encoding_for_strings((const unsigned char**)val_list, len_list, num, info->from_encodings, info->num_from_encodings, MBSTRG(strict_detection), false);
if (!from_encoding) {
if (info->report_errors) {
php_error_docref(NULL, E_WARNING, "Unable to detect encoding");
}
from_encoding = &mbfl_encoding_pass;
}
}
/* convert encoding */
n = 0;
while (n < num) {
if (from_encoding != &mbfl_encoding_pass && info->to_encoding != &mbfl_encoding_pass) {
unsigned int num_errors = 0;
zend_string *converted_var = mb_fast_convert((unsigned char*)val_list[n], len_list[n], from_encoding, info->to_encoding, MBSTRG(current_filter_illegal_substchar), MBSTRG(current_filter_illegal_mode), &num_errors);
MBSTRG(illegalchars) += num_errors;
n++;
num_errors = 0;
zend_string *converted_val = mb_fast_convert((unsigned char*)val_list[n], len_list[n], from_encoding, info->to_encoding, MBSTRG(current_filter_illegal_substchar), MBSTRG(current_filter_illegal_mode), &num_errors);
MBSTRG(illegalchars) += num_errors;
n++;
/* `val` must be a pointer returned by `emalloc` */
val = estrndup(ZSTR_VAL(converted_val), ZSTR_LEN(converted_val));
if (sapi_module.input_filter(info->data_type, ZSTR_VAL(converted_var), &val, ZSTR_LEN(converted_val), &new_val_len)) {
/* add variable to symbol table */
php_register_variable_safe(ZSTR_VAL(converted_var), val, new_val_len, array_ptr);
}
zend_string_free(converted_var);
zend_string_free(converted_val);
} else {
var = val_list[n++];
val = estrndup(val_list[n], len_list[n]);
if (sapi_module.input_filter(info->data_type, var, &val, len_list[n], &new_val_len)) {
php_register_variable_safe(var, val, new_val_len, array_ptr);
}
n++;
}
efree(val);
}
out:
if (val_list != NULL) {
efree((void *)val_list);
}
if (len_list != NULL) {
efree((void *)len_list);
}
return from_encoding;
}
/* }}} */
/* {{{ SAPI_POST_HANDLER_FUNC(php_mb_post_handler) */
SAPI_POST_HANDLER_FUNC(php_mb_post_handler)
{
const mbfl_encoding *detected;
php_mb_encoding_handler_info_t info;
zend_string *post_data_str = NULL;
MBSTRG(http_input_identify_post) = NULL;
info.data_type = PARSE_POST;
info.separator = "&";
info.report_errors = false;
info.to_encoding = MBSTRG(internal_encoding);
info.from_encodings = MBSTRG(http_input_list);
info.num_from_encodings = MBSTRG(http_input_list_size);
php_stream_rewind(SG(request_info).request_body);
post_data_str = php_stream_copy_to_mem(SG(request_info).request_body, PHP_STREAM_COPY_ALL, 0);
detected = _php_mb_encoding_handler_ex(&info, arg, post_data_str ? ZSTR_VAL(post_data_str) : NULL);
if (post_data_str) {
zend_string_release_ex(post_data_str, 0);
}
MBSTRG(http_input_identify) = detected;
if (detected) {
MBSTRG(http_input_identify_post) = detected;
}
}
/* }}} */