root/ext/mbstring/mb_gpc.c

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DEFINITIONS

This source file includes following definitions.
  1. ZEND_EXTERN_MODULE_GLOBALS
  2. _php_mb_encoding_handler_ex
  3. SAPI_POST_HANDLER_FUNC

/*
   +----------------------------------------------------------------------+
   | PHP Version 5                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2015 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:           |
   | http://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>                        |
   +----------------------------------------------------------------------+
 */

/* $Id$ */

/* {{{ includes */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "php.h"
#include "php_ini.h"
#include "php_variables.h"
#include "libmbfl/mbfl/mbfilter_pass.h"
#include "mbstring.h"
#include "ext/standard/php_string.h"
#include "ext/standard/php_mail.h"
#include "ext/standard/url.h"
#include "main/php_output.h"
#include "ext/standard/info.h"

#include "php_variables.h"
#include "php_globals.h"
#include "rfc1867.h"
#include "php_content_types.h"
#include "SAPI.h"
#include "TSRM.h"

#include "mb_gpc.h"
/* }}} */

#if HAVE_MBSTRING

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 *array_ptr;
        int free_buffer=0;
        const mbfl_encoding *detected;
        php_mb_encoding_handler_info_t info;

        if (arg != PARSE_STRING) {
                char *value = MBSTRG(internal_encoding_name);
                _php_mb_ini_mbstring_internal_encoding_set(value, value ? strlen(value): 0 TSRMLS_CC);
        }

        if (!MBSTRG(encoding_translation)) {
                php_default_treat_data(arg, str, destArray TSRMLS_CC);
                return;
        }

        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_POST:
        case PARSE_GET:
        case PARSE_STRING:
                separator = (char *) estrdup(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          = 0;
        info.to_encoding            = MBSTRG(internal_encoding);
        info.to_language            = MBSTRG(language);
        info.from_encodings         = MBSTRG(http_input_list);
        info.num_from_encodings     = MBSTRG(http_input_list_size); 
        info.from_language          = MBSTRG(language);

        MBSTRG(illegalchars) = 0;

        detected = _php_mb_encoding_handler_ex(&info, array_ptr, res TSRMLS_CC);
        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 *arg, char *res TSRMLS_DC)
{
        char *var, *val;
        const char *s1, *s2;
        char *strtok_buf = NULL, **val_list = NULL;
        zval *array_ptr = (zval *) arg;
        int n, num, *len_list = NULL;
        unsigned int val_len, new_val_len;
        mbfl_string string, resvar, resval;
        const mbfl_encoding *from_encoding = NULL;
        mbfl_encoding_detector *identd = NULL; 
        mbfl_buffer_converter *convd = NULL;

        mbfl_string_init_set(&string, info->to_language, info->to_encoding->no_encoding);
        mbfl_string_init_set(&resvar, info->to_language, info->to_encoding->no_encoding);
        mbfl_string_init_set(&resval, info->to_language, info->to_encoding->no_encoding);

        if (!res || *res == '\0') {
                goto out;
        }
        
        /* count the variables(separators) contained in the "res".
         * separator may contain multiple separator chars.
         */
        num = 1;
        for (s1=res; *s1 != '\0'; s1++) {
                for (s2=info->separator; *s2 != '\0'; s2++) {
                        if (*s1 == *s2) {
                                num++;
                        }       
                }
        }
        num *= 2; /* need space for variable name and value */
        
        val_list = (char **)ecalloc(num, sizeof(char *));
        len_list = (int *)ecalloc(num, sizeof(int));

        /* split and decode the query */
        n = 0;
        strtok_buf = NULL;
        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);
        } 

        if (n > (PG(max_input_vars) * 2)) {
                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Input variables exceeded %ld. To increase the limit change max_input_vars in php.ini.", PG(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 {
                /* auto detect */
                from_encoding = NULL;
                identd = mbfl_encoding_detector_new2(info->from_encodings, info->num_from_encodings, MBSTRG(strict_detection));
                if (identd != NULL) {
                        n = 0;
                        while (n < num) {
                                string.val = (unsigned char *)val_list[n];
                                string.len = len_list[n];
                                if (mbfl_encoding_detector_feed(identd, &string)) {
                                        break;
                                }
                                n++;
                        }
                        from_encoding = mbfl_encoding_detector_judge2(identd);
                        mbfl_encoding_detector_delete(identd);
                }
                if (!from_encoding) {
                        if (info->report_errors) {
                                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to detect encoding");
                        }
                        from_encoding = &mbfl_encoding_pass;
                }
        }

        convd = NULL;
        if (from_encoding != &mbfl_encoding_pass) {
                convd = mbfl_buffer_converter_new2(from_encoding, info->to_encoding, 0);
                if (convd != NULL) {
                        mbfl_buffer_converter_illegal_mode(convd, MBSTRG(current_filter_illegal_mode));
                        mbfl_buffer_converter_illegal_substchar(convd, MBSTRG(current_filter_illegal_substchar));
                } else {
                        if (info->report_errors) {
                                php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to create converter");
                        }
                        goto out;
                }
        }

        /* convert encoding */
        string.no_encoding = from_encoding->no_encoding;

        n = 0;
        while (n < num) {
                string.val = (unsigned char *)val_list[n];
                string.len = len_list[n];
                if (convd != NULL && mbfl_buffer_converter_feed_result(convd, &string, &resvar) != NULL) {
                        var = (char *)resvar.val;
                } else {
                        var = val_list[n];
                }
                n++;
                string.val = (unsigned char *)val_list[n];
                string.len = len_list[n];
                if (convd != NULL && mbfl_buffer_converter_feed_result(convd, &string, &resval) != NULL) {
                        val = (char *)resval.val;
                        val_len = resval.len;
                } else {
                        val = val_list[n];
                        val_len = len_list[n];
                }
                n++;
                /* we need val to be emalloc()ed */
                val = estrndup(val, val_len);
                if (sapi_module.input_filter(info->data_type, var, &val, val_len, &new_val_len TSRMLS_CC)) {
                        /* add variable to symbol table */
                        php_register_variable_safe(var, val, new_val_len, array_ptr TSRMLS_CC);
                }
                efree(val);
                
                if (convd != NULL){
                        mbfl_string_clear(&resvar);
                        mbfl_string_clear(&resval);
                }
        }

out:
        if (convd != NULL) {
                MBSTRG(illegalchars) += mbfl_buffer_illegalchars(convd);
                mbfl_buffer_converter_delete(convd);
        }
        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;

        MBSTRG(http_input_identify_post) = NULL;

        info.data_type              = PARSE_POST;
        info.separator              = "&";
        info.report_errors          = 0;
        info.to_encoding            = MBSTRG(internal_encoding);
        info.to_language            = MBSTRG(language);
        info.from_encodings         = MBSTRG(http_input_list);
        info.num_from_encodings     = MBSTRG(http_input_list_size); 
        info.from_language          = MBSTRG(language);

        detected = _php_mb_encoding_handler_ex(&info, arg, SG(request_info).post_data TSRMLS_CC);

        MBSTRG(http_input_identify) = detected;
        if (detected) {
                MBSTRG(http_input_identify_post) = detected;
        }
}
/* }}} */

#endif /* HAVE_MBSTRING */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: fdm=marker
 * vim: noet sw=4 ts=4
 */


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