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mbstring.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 |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Tsukada Takuya <[email protected]> |
| Rui Hirokawa <[email protected]> |
| Hironori Sato <[email protected]> |
| Shigeru Kanemoto <[email protected]> |
+----------------------------------------------------------------------+
*/
/* {{{ includes */
#include <limits.h>
#include "libmbfl/config.h"
#include "php.h"
#include "php_ini.h"
#include "php_variables.h"
#include "mbstring.h"
#include "ext/standard/php_string.h"
#include "ext/standard/php_mail.h"
#include "ext/standard/exec.h"
#include "ext/standard/url.h"
#include "main/php_output.h"
#include "ext/standard/info.h"
#include "ext/pcre/php_pcre.h"
#include "libmbfl/mbfl/mbfilter_8bit.h"
#include "libmbfl/mbfl/mbfilter_pass.h"
#include "libmbfl/mbfl/mbfilter_wchar.h"
#include "libmbfl/mbfl/eaw_table.h"
#include "libmbfl/filters/mbfilter_base64.h"
#include "libmbfl/filters/mbfilter_cjk.h"
#include "libmbfl/filters/mbfilter_qprint.h"
#include "libmbfl/filters/mbfilter_htmlent.h"
#include "libmbfl/filters/mbfilter_uuencode.h"
#include "libmbfl/filters/mbfilter_ucs4.h"
#include "libmbfl/filters/mbfilter_utf8.h"
#include "libmbfl/filters/mbfilter_utf16.h"
#include "libmbfl/filters/mbfilter_singlebyte.h"
#include "libmbfl/filters/translit_kana_jisx0201_jisx0208.h"
#include "libmbfl/filters/unicode_prop.h"
#include "php_variables.h"
#include "php_globals.h"
#include "rfc1867.h"
#include "php_content_types.h"
#include "SAPI.h"
#include "php_unicode.h"
#include "TSRM.h"
#include "mb_gpc.h"
#ifdef HAVE_MBREGEX
# include "php_mbregex.h"
#endif
#include "zend_smart_str.h"
#include "zend_multibyte.h"
#include "mbstring_arginfo.h"
#include "rare_cp_bitvec.h"
/* }}} */
/* {{{ prototypes */
ZEND_DECLARE_MODULE_GLOBALS(mbstring)
static PHP_GINIT_FUNCTION(mbstring);
static PHP_GSHUTDOWN_FUNCTION(mbstring);
static void php_mb_populate_current_detect_order_list(void);
static int php_mb_encoding_translation(void);
static void php_mb_gpc_get_detect_order(const zend_encoding ***list, size_t *list_size);
static void php_mb_gpc_set_input_encoding(const zend_encoding *encoding);
static inline bool php_mb_is_unsupported_no_encoding(enum mbfl_no_encoding no_enc);
static inline bool php_mb_is_no_encoding_utf8(enum mbfl_no_encoding no_enc);
static bool mb_check_str_encoding(zend_string *str, const mbfl_encoding *encoding);
static const mbfl_encoding* mb_guess_encoding(unsigned char *in, size_t in_len, const mbfl_encoding **elist, unsigned int elist_size, bool strict, bool order_significant);
static zend_string* mb_mime_header_encode(zend_string *input, const mbfl_encoding *incode, const mbfl_encoding *outcode, bool base64, char *linefeed, size_t linefeed_len, zend_long indent);
/* See mbfilter_cp5022x.c */
uint32_t mb_convert_kana_codepoint(uint32_t c, uint32_t next, bool *consumed, uint32_t *second, int mode);
/* }}} */
/* {{{ php_mb_default_identify_list */
typedef struct _php_mb_nls_ident_list {
enum mbfl_no_language lang;
const enum mbfl_no_encoding *list;
size_t list_size;
} php_mb_nls_ident_list;
static const enum mbfl_no_encoding php_mb_default_identify_list_ja[] = {
mbfl_no_encoding_ascii,
mbfl_no_encoding_jis,
mbfl_no_encoding_utf8,
mbfl_no_encoding_euc_jp,
mbfl_no_encoding_sjis
};
static const enum mbfl_no_encoding php_mb_default_identify_list_cn[] = {
mbfl_no_encoding_ascii,
mbfl_no_encoding_utf8,
mbfl_no_encoding_euc_cn,
mbfl_no_encoding_cp936
};
static const enum mbfl_no_encoding php_mb_default_identify_list_tw_hk[] = {
mbfl_no_encoding_ascii,
mbfl_no_encoding_utf8,
mbfl_no_encoding_euc_tw,
mbfl_no_encoding_big5
};
static const enum mbfl_no_encoding php_mb_default_identify_list_kr[] = {
mbfl_no_encoding_ascii,
mbfl_no_encoding_utf8,
mbfl_no_encoding_euc_kr,
mbfl_no_encoding_uhc
};
static const enum mbfl_no_encoding php_mb_default_identify_list_ru[] = {
mbfl_no_encoding_ascii,
mbfl_no_encoding_utf8,
mbfl_no_encoding_koi8r,
mbfl_no_encoding_cp1251,
mbfl_no_encoding_cp866
};
static const enum mbfl_no_encoding php_mb_default_identify_list_hy[] = {
mbfl_no_encoding_ascii,
mbfl_no_encoding_utf8,
mbfl_no_encoding_armscii8
};
static const enum mbfl_no_encoding php_mb_default_identify_list_tr[] = {
mbfl_no_encoding_ascii,
mbfl_no_encoding_utf8,
mbfl_no_encoding_cp1254,
mbfl_no_encoding_8859_9
};
static const enum mbfl_no_encoding php_mb_default_identify_list_ua[] = {
mbfl_no_encoding_ascii,
mbfl_no_encoding_utf8,
mbfl_no_encoding_koi8u
};
static const enum mbfl_no_encoding php_mb_default_identify_list_neut[] = {
mbfl_no_encoding_ascii,
mbfl_no_encoding_utf8
};
static const php_mb_nls_ident_list php_mb_default_identify_list[] = {
{ mbfl_no_language_japanese, php_mb_default_identify_list_ja, sizeof(php_mb_default_identify_list_ja) / sizeof(php_mb_default_identify_list_ja[0]) },
{ mbfl_no_language_korean, php_mb_default_identify_list_kr, sizeof(php_mb_default_identify_list_kr) / sizeof(php_mb_default_identify_list_kr[0]) },
{ mbfl_no_language_traditional_chinese, php_mb_default_identify_list_tw_hk, sizeof(php_mb_default_identify_list_tw_hk) / sizeof(php_mb_default_identify_list_tw_hk[0]) },
{ mbfl_no_language_simplified_chinese, php_mb_default_identify_list_cn, sizeof(php_mb_default_identify_list_cn) / sizeof(php_mb_default_identify_list_cn[0]) },
{ mbfl_no_language_russian, php_mb_default_identify_list_ru, sizeof(php_mb_default_identify_list_ru) / sizeof(php_mb_default_identify_list_ru[0]) },
{ mbfl_no_language_armenian, php_mb_default_identify_list_hy, sizeof(php_mb_default_identify_list_hy) / sizeof(php_mb_default_identify_list_hy[0]) },
{ mbfl_no_language_turkish, php_mb_default_identify_list_tr, sizeof(php_mb_default_identify_list_tr) / sizeof(php_mb_default_identify_list_tr[0]) },
{ mbfl_no_language_ukrainian, php_mb_default_identify_list_ua, sizeof(php_mb_default_identify_list_ua) / sizeof(php_mb_default_identify_list_ua[0]) },
{ mbfl_no_language_neutral, php_mb_default_identify_list_neut, sizeof(php_mb_default_identify_list_neut) / sizeof(php_mb_default_identify_list_neut[0]) }
};
/* }}} */
/* {{{ mbstring_deps[] */
static const zend_module_dep mbstring_deps[] = {
ZEND_MOD_REQUIRED("pcre")
ZEND_MOD_END
};
/* }}} */
/* {{{ zend_module_entry mbstring_module_entry */
zend_module_entry mbstring_module_entry = {
STANDARD_MODULE_HEADER_EX,
NULL,
mbstring_deps,
"mbstring",
ext_functions,
PHP_MINIT(mbstring),
PHP_MSHUTDOWN(mbstring),
PHP_RINIT(mbstring),
PHP_RSHUTDOWN(mbstring),
PHP_MINFO(mbstring),
PHP_MBSTRING_VERSION,
PHP_MODULE_GLOBALS(mbstring),
PHP_GINIT(mbstring),
PHP_GSHUTDOWN(mbstring),
NULL,
STANDARD_MODULE_PROPERTIES_EX
};
/* }}} */
/* {{{ static sapi_post_entry php_post_entries[] */
static const sapi_post_entry php_post_entries[] = {
{ DEFAULT_POST_CONTENT_TYPE, sizeof(DEFAULT_POST_CONTENT_TYPE)-1, sapi_read_standard_form_data, php_std_post_handler },
{ MULTIPART_CONTENT_TYPE, sizeof(MULTIPART_CONTENT_TYPE)-1, NULL, rfc1867_post_handler },
{ NULL, 0, NULL, NULL }
};
/* }}} */
#ifdef COMPILE_DL_MBSTRING
#ifdef ZTS
ZEND_TSRMLS_CACHE_DEFINE()
#endif
ZEND_GET_MODULE(mbstring)
#endif
/* {{{ static sapi_post_entry mbstr_post_entries[] */
static const sapi_post_entry mbstr_post_entries[] = {
{ DEFAULT_POST_CONTENT_TYPE, sizeof(DEFAULT_POST_CONTENT_TYPE)-1, sapi_read_standard_form_data, php_mb_post_handler },
{ MULTIPART_CONTENT_TYPE, sizeof(MULTIPART_CONTENT_TYPE)-1, NULL, rfc1867_post_handler },
{ NULL, 0, NULL, NULL }
};
/* }}} */
static const mbfl_encoding *php_mb_get_encoding(zend_string *encoding_name, uint32_t arg_num) {
if (encoding_name) {
const mbfl_encoding *encoding;
zend_string *last_encoding_name = MBSTRG(last_used_encoding_name);
if (last_encoding_name && (last_encoding_name == encoding_name
|| zend_string_equals_ci(encoding_name, last_encoding_name))) {
return MBSTRG(last_used_encoding);
}
encoding = mbfl_name2encoding(ZSTR_VAL(encoding_name));
if (!encoding) {
zend_argument_value_error(arg_num, "must be a valid encoding, \"%s\" given", ZSTR_VAL(encoding_name));
return NULL;
} else if (encoding->no_encoding <= mbfl_no_encoding_qprint) {
if (encoding == &mbfl_encoding_base64) {
php_error_docref(NULL, E_DEPRECATED, "Handling Base64 via mbstring is deprecated; use base64_encode/base64_decode instead");
} else if (encoding == &mbfl_encoding_qprint) {
php_error_docref(NULL, E_DEPRECATED, "Handling QPrint via mbstring is deprecated; use quoted_printable_encode/quoted_printable_decode instead");
} else if (encoding == &mbfl_encoding_html_ent) {
php_error_docref(NULL, E_DEPRECATED, "Handling HTML entities via mbstring is deprecated; use htmlspecialchars, htmlentities, or mb_encode_numericentity/mb_decode_numericentity instead");
} else if (encoding == &mbfl_encoding_uuencode) {
php_error_docref(NULL, E_DEPRECATED, "Handling Uuencode via mbstring is deprecated; use convert_uuencode/convert_uudecode instead");
}
}
if (last_encoding_name) {
zend_string_release(last_encoding_name);
}
MBSTRG(last_used_encoding_name) = zend_string_copy(encoding_name);
MBSTRG(last_used_encoding) = encoding;
return encoding;
} else {
return MBSTRG(current_internal_encoding);
}
}
static const mbfl_encoding *php_mb_get_encoding_or_pass(const char *encoding_name, size_t encoding_name_len) {
if (strncmp(encoding_name, "pass", encoding_name_len) == 0) {
return &mbfl_encoding_pass;
}
return mbfl_name2encoding_ex(encoding_name, encoding_name_len);
}
static size_t count_commas(const char *p, const char *end) {
size_t count = 0;
while ((p = memchr(p, ',', end - p))) {
count++;
p++;
}
return count;
}
/* {{{ static zend_result php_mb_parse_encoding_list()
* Return FAILURE if input contains any illegal encoding, otherwise SUCCESS.
* Emits a ValueError in function context and a warning in INI context, in INI context arg_num must be 0.
*/
static zend_result php_mb_parse_encoding_list(const char *value, size_t value_length,
const mbfl_encoding ***return_list, size_t *return_size, bool persistent, uint32_t arg_num)
{
if (value == NULL || value_length == 0) {
*return_list = NULL;
*return_size = 0;
return SUCCESS;
} else {
bool included_auto;
size_t n, size;
const char *p1, *endp, *tmpstr;
const mbfl_encoding **entry, **list;
if (value[0]=='"' && value[value_length-1]=='"' && value_length>2) {
tmpstr = value + 1;
value_length -= 2;
} else {
tmpstr = value;
}
endp = tmpstr + value_length;
size = 1 + count_commas(tmpstr, endp) + MBSTRG(default_detect_order_list_size);
list = (const mbfl_encoding **)pecalloc(size, sizeof(mbfl_encoding*), persistent);
entry = list;
n = 0;
included_auto = 0;
p1 = tmpstr;
while (1) {
const char *comma = memchr(p1, ',', endp - p1);
const char *p = comma ? comma : endp;
/* trim spaces */
while (p1 < p && (*p1 == ' ' || *p1 == '\t')) {
p1++;
}
p--;
while (p > p1 && (*p == ' ' || *p == '\t')) {
p--;
}
size_t p1_length = p - p1 + 1;
/* convert to the encoding number and check encoding */
if (strncasecmp(p1, "auto", p1_length) == 0) {
if (!included_auto) {
const enum mbfl_no_encoding *src = MBSTRG(default_detect_order_list);
const size_t identify_list_size = MBSTRG(default_detect_order_list_size);
size_t i;
included_auto = 1;
for (i = 0; i < identify_list_size; i++) {
*entry++ = mbfl_no2encoding(*src++);
n++;
}
}
} else {
const mbfl_encoding *encoding = mbfl_name2encoding_ex(p1, p1_length);
if (!encoding) {
/* Called from an INI setting modification */
if (arg_num == 0) {
php_error_docref("ref.mbstring", E_WARNING, "INI setting contains invalid encoding \"%.*s\"", (int) p1_length, p1);
} else {
zend_argument_value_error(arg_num, "contains invalid encoding \"%.*s\"", (int) p1_length, p1);
}
pefree(ZEND_VOIDP(list), persistent);
return FAILURE;
}
*entry++ = encoding;
n++;
}
if (n >= size || comma == NULL) {
break;
}
p1 = comma + 1;
}
*return_list = list;
*return_size = n;
}
return SUCCESS;
}
/* }}} */
/* {{{
* Return FAILURE if input contains any illegal encoding, otherwise SUCCESS.
* Emits a ValueError in function context and a warning in INI context, in INI context arg_num must be 0.
*/
static zend_result php_mb_parse_encoding_array(HashTable *target_hash, const mbfl_encoding ***return_list,
size_t *return_size, uint32_t arg_num)
{
/* Allocate enough space to include the default detect order if "auto" is used. */
size_t size = zend_hash_num_elements(target_hash) + MBSTRG(default_detect_order_list_size);
const mbfl_encoding **list = ecalloc(size, sizeof(mbfl_encoding*));
const mbfl_encoding **entry = list;
bool included_auto = 0;
size_t n = 0;
zval *hash_entry;
ZEND_HASH_FOREACH_VAL(target_hash, hash_entry) {
zend_string *encoding_str = zval_try_get_string(hash_entry);
if (UNEXPECTED(!encoding_str)) {
efree(ZEND_VOIDP(list));
return FAILURE;
}
if (zend_string_equals_literal_ci(encoding_str, "auto")) {
if (!included_auto) {
const enum mbfl_no_encoding *src = MBSTRG(default_detect_order_list);
const size_t identify_list_size = MBSTRG(default_detect_order_list_size);
size_t j;
included_auto = 1;
for (j = 0; j < identify_list_size; j++) {
*entry++ = mbfl_no2encoding(*src++);
n++;
}
}
} else {
const mbfl_encoding *encoding = mbfl_name2encoding(ZSTR_VAL(encoding_str));
if (encoding) {
*entry++ = encoding;
n++;
} else {
zend_argument_value_error(arg_num, "contains invalid encoding \"%s\"", ZSTR_VAL(encoding_str));
zend_string_release(encoding_str);
efree(ZEND_VOIDP(list));
return FAILURE;
}
}
zend_string_release(encoding_str);
} ZEND_HASH_FOREACH_END();
*return_list = list;
*return_size = n;
return SUCCESS;
}
/* }}} */
/* {{{ zend_multibyte interface */
static const zend_encoding* php_mb_zend_encoding_fetcher(const char *encoding_name)
{
return (const zend_encoding*)mbfl_name2encoding(encoding_name);
}
static const char *php_mb_zend_encoding_name_getter(const zend_encoding *encoding)
{
return ((const mbfl_encoding *)encoding)->name;
}
static bool php_mb_zend_encoding_lexer_compatibility_checker(const zend_encoding *_encoding)
{
const mbfl_encoding *encoding = (const mbfl_encoding*)_encoding;
return !(encoding->flag & MBFL_ENCTYPE_GL_UNSAFE);
}
static const zend_encoding *php_mb_zend_encoding_detector(const unsigned char *arg_string, size_t arg_length, const zend_encoding **list, size_t list_size)
{
if (!list) {
list = (const zend_encoding**)MBSTRG(current_detect_order_list);
list_size = MBSTRG(current_detect_order_list_size);
}
if (list_size == 1 && ((mbfl_encoding*)*list) == &mbfl_encoding_pass) {
/* Emulate behavior of previous implementation; it would never return "pass"
* from an encoding auto-detection operation */
return NULL;
}
return (const zend_encoding*)mb_guess_encoding((unsigned char*)arg_string, arg_length, (const mbfl_encoding**)list, list_size, false, false);
}
static size_t php_mb_zend_encoding_converter(unsigned char **to, size_t *to_length, const unsigned char *from, size_t from_length, const zend_encoding *encoding_to, const zend_encoding *encoding_from)
{
unsigned int num_errors = 0;
zend_string *result = mb_fast_convert((unsigned char*)from, from_length, (const mbfl_encoding*)encoding_from, (const mbfl_encoding*)encoding_to, MBSTRG(current_filter_illegal_substchar), MBSTRG(current_filter_illegal_mode), &num_errors);
*to_length = ZSTR_LEN(result);
*to = emalloc(ZSTR_LEN(result) + 1); /* Include terminating null byte */
memcpy(*to, ZSTR_VAL(result), ZSTR_LEN(result) + 1);
zend_string_free(result);
return from_length;
}
static zend_result php_mb_zend_encoding_list_parser(const char *encoding_list, size_t encoding_list_len, const zend_encoding ***return_list, size_t *return_size, bool persistent)
{
return php_mb_parse_encoding_list(
encoding_list, encoding_list_len,
(const mbfl_encoding ***)return_list, return_size,
persistent, /* arg_num */ 0);
}
static const zend_encoding *php_mb_zend_internal_encoding_getter(void)
{
return (const zend_encoding *)MBSTRG(internal_encoding);
}
static zend_result php_mb_zend_internal_encoding_setter(const zend_encoding *encoding)
{
MBSTRG(internal_encoding) = (const mbfl_encoding *)encoding;
return SUCCESS;
}
static zend_multibyte_functions php_mb_zend_multibyte_functions = {
"mbstring",
php_mb_zend_encoding_fetcher,
php_mb_zend_encoding_name_getter,
php_mb_zend_encoding_lexer_compatibility_checker,
php_mb_zend_encoding_detector,
php_mb_zend_encoding_converter,
php_mb_zend_encoding_list_parser,
php_mb_zend_internal_encoding_getter,
php_mb_zend_internal_encoding_setter
};
/* }}} */
/* {{{ _php_mb_compile_regex */
static void *_php_mb_compile_regex(const char *pattern)
{
pcre2_code *retval;
PCRE2_SIZE err_offset;
int errnum;
if (!(retval = pcre2_compile((PCRE2_SPTR)pattern, PCRE2_ZERO_TERMINATED,
PCRE2_CASELESS, &errnum, &err_offset, php_pcre_cctx()))) {
PCRE2_UCHAR err_str[128];
pcre2_get_error_message(errnum, err_str, sizeof(err_str));
php_error_docref(NULL, E_WARNING, "%s (offset=%zu): %s", pattern, err_offset, err_str);
}
return retval;
}
/* }}} */
/* {{{ _php_mb_match_regex */
static int _php_mb_match_regex(void *opaque, const char *str, size_t str_len)
{
int res;
pcre2_match_data *match_data = php_pcre_create_match_data(0, opaque);
if (NULL == match_data) {
pcre2_code_free(opaque);
php_error_docref(NULL, E_WARNING, "Cannot allocate match data");
return FAILURE;
}
res = pcre2_match(opaque, (PCRE2_SPTR)str, str_len, 0, 0, match_data, php_pcre_mctx()) >= 0;
php_pcre_free_match_data(match_data);
return res;
}
/* }}} */
/* {{{ _php_mb_free_regex */
static void _php_mb_free_regex(void *opaque)
{
pcre2_code_free(opaque);
}
/* }}} */
/* {{{ php_mb_nls_get_default_detect_order_list */
static int php_mb_nls_get_default_detect_order_list(enum mbfl_no_language lang, enum mbfl_no_encoding **plist, size_t *plist_size)
{
size_t i;
*plist = (enum mbfl_no_encoding *) php_mb_default_identify_list_neut;
*plist_size = sizeof(php_mb_default_identify_list_neut) / sizeof(php_mb_default_identify_list_neut[0]);
for (i = 0; i < sizeof(php_mb_default_identify_list) / sizeof(php_mb_default_identify_list[0]); i++) {
if (php_mb_default_identify_list[i].lang == lang) {
*plist = (enum mbfl_no_encoding *)php_mb_default_identify_list[i].list;
*plist_size = php_mb_default_identify_list[i].list_size;
return 1;
}
}
return 0;
}
/* }}} */
static char *php_mb_rfc1867_substring_conf(const zend_encoding *encoding, char *start, size_t len, char quote)
{
char *result = emalloc(len + 2);
char *resp = result;
size_t i;
for (i = 0; i < len && start[i] != quote; ++i) {
if (start[i] == '\\' && (start[i + 1] == '\\' || (quote && start[i + 1] == quote))) {
*resp++ = start[++i];
} else {
size_t j = php_mb_mbchar_bytes(start+i, (const mbfl_encoding *)encoding);
while (j-- > 0 && i < len) {
*resp++ = start[i++];
}
--i;
}
}
*resp = '\0';
return result;
}
static char *php_mb_rfc1867_getword(const zend_encoding *encoding, char **line, char stop) /* {{{ */
{
char *pos = *line, quote;
char *res;
while (*pos && *pos != stop) {
if ((quote = *pos) == '"' || quote == '\'') {
++pos;
while (*pos && *pos != quote) {
if (*pos == '\\' && pos[1] && pos[1] == quote) {
pos += 2;
} else {
++pos;
}
}
if (*pos) {
++pos;
}
} else {
pos += php_mb_mbchar_bytes(pos, (const mbfl_encoding *)encoding);
}
}
if (*pos == '\0') {
res = estrdup(*line);
*line += strlen(*line);
return res;
}
res = estrndup(*line, pos - *line);
while (*pos == stop) {
pos += php_mb_mbchar_bytes(pos, (const mbfl_encoding *)encoding);
}
*line = pos;
return res;
}
/* }}} */
static char *php_mb_rfc1867_getword_conf(const zend_encoding *encoding, char *str) /* {{{ */
{
while (*str && isspace(*(unsigned char *)str)) {
++str;
}
if (!*str) {
return estrdup("");
}
if (*str == '"' || *str == '\'') {
char quote = *str;
str++;
return php_mb_rfc1867_substring_conf(encoding, str, strlen(str), quote);
} else {
char *strend = str;
while (*strend && !isspace(*(unsigned char *)strend)) {
++strend;
}
return php_mb_rfc1867_substring_conf(encoding, str, strend - str, 0);
}
}
/* }}} */
static char *php_mb_rfc1867_basename(const zend_encoding *encoding, char *filename) /* {{{ */
{
char *s, *s2;
const size_t filename_len = strlen(filename);
/* The \ check should technically be needed for win32 systems only where
* it is a valid path separator. However, IE in all it's wisdom always sends
* the full path of the file on the user's filesystem, which means that unless
* the user does basename() they get a bogus file name. Until IE's user base drops
* to nill or problem is fixed this code must remain enabled for all systems. */
s = php_mb_safe_strrchr(filename, '\\', filename_len, (const mbfl_encoding *)encoding);
s2 = php_mb_safe_strrchr(filename, '/', filename_len, (const mbfl_encoding *)encoding);
if (s && s2) {
if (s > s2) {
return ++s;
} else {
return ++s2;
}
} else if (s) {
return ++s;
} else if (s2) {
return ++s2;
} else {
return filename;
}
}
/* }}} */
/* {{{ php.ini directive handler */
/* {{{ static PHP_INI_MH(OnUpdate_mbstring_language) */
static PHP_INI_MH(OnUpdate_mbstring_language)
{
enum mbfl_no_language no_language;
no_language = mbfl_name2no_language(ZSTR_VAL(new_value));
if (no_language == mbfl_no_language_invalid) {
MBSTRG(language) = mbfl_no_language_neutral;
return FAILURE;
}
MBSTRG(language) = no_language;
php_mb_nls_get_default_detect_order_list(no_language, &MBSTRG(default_detect_order_list), &MBSTRG(default_detect_order_list_size));
return SUCCESS;
}
/* }}} */
/* {{{ static PHP_INI_MH(OnUpdate_mbstring_detect_order) */
static PHP_INI_MH(OnUpdate_mbstring_detect_order)
{
const mbfl_encoding **list;
size_t size;
if (!new_value) {
if (MBSTRG(detect_order_list)) {
pefree(ZEND_VOIDP(MBSTRG(detect_order_list)), 1);
}
MBSTRG(detect_order_list) = NULL;
MBSTRG(detect_order_list_size) = 0;
return SUCCESS;
}
if (FAILURE == php_mb_parse_encoding_list(ZSTR_VAL(new_value), ZSTR_LEN(new_value), &list, &size, /* persistent */ 1, /* arg_num */ 0) || size == 0) {
return FAILURE;
}
if (MBSTRG(detect_order_list)) {
pefree(ZEND_VOIDP(MBSTRG(detect_order_list)), 1);
}
MBSTRG(detect_order_list) = list;
MBSTRG(detect_order_list_size) = size;
return SUCCESS;
}
/* }}} */
static zend_result _php_mb_ini_mbstring_http_input_set(const char *new_value, size_t new_value_length) {
const mbfl_encoding **list;
size_t size;
if (new_value_length == 4 && strncmp(new_value, "pass", 4) == 0) {
list = (const mbfl_encoding**)pecalloc(1, sizeof(mbfl_encoding*), 1);
*list = &mbfl_encoding_pass;
size = 1;
} else if (FAILURE == php_mb_parse_encoding_list(new_value, new_value_length, &list, &size, /* persistent */ 1, /* arg_num */ 0) || size == 0) {
return FAILURE;
}
if (MBSTRG(http_input_list)) {
pefree(ZEND_VOIDP(MBSTRG(http_input_list)), 1);
}
MBSTRG(http_input_list) = list;
MBSTRG(http_input_list_size) = size;
return SUCCESS;
}
/* {{{ static PHP_INI_MH(OnUpdate_mbstring_http_input) */
static PHP_INI_MH(OnUpdate_mbstring_http_input)
{
if (new_value) {
php_error_docref("ref.mbstring", E_DEPRECATED, "Use of mbstring.http_input is deprecated");
}
if (!new_value || !ZSTR_LEN(new_value)) {
const char *encoding = php_get_input_encoding();
MBSTRG(http_input_set) = 0;
_php_mb_ini_mbstring_http_input_set(encoding, strlen(encoding));
return SUCCESS;
}
MBSTRG(http_input_set) = 1;
return _php_mb_ini_mbstring_http_input_set(ZSTR_VAL(new_value), ZSTR_LEN(new_value));
}
/* }}} */
static zend_result _php_mb_ini_mbstring_http_output_set(const char *new_value, size_t length) {
const mbfl_encoding *encoding = php_mb_get_encoding_or_pass(new_value, length);
if (!encoding) {
return FAILURE;
}
MBSTRG(http_output_encoding) = encoding;
MBSTRG(current_http_output_encoding) = encoding;
return SUCCESS;
}
/* {{{ static PHP_INI_MH(OnUpdate_mbstring_http_output) */
static PHP_INI_MH(OnUpdate_mbstring_http_output)
{
if (new_value) {
php_error_docref("ref.mbstring", E_DEPRECATED, "Use of mbstring.http_output is deprecated");
}
if (new_value == NULL || ZSTR_LEN(new_value) == 0) {
const char *encoding = php_get_output_encoding();
MBSTRG(http_output_set) = 0;
_php_mb_ini_mbstring_http_output_set(encoding, strlen(encoding));
return SUCCESS;
}
MBSTRG(http_output_set) = 1;
return _php_mb_ini_mbstring_http_output_set(ZSTR_VAL(new_value), ZSTR_LEN(new_value));
}
/* }}} */
/* {{{ static _php_mb_ini_mbstring_internal_encoding_set */
static zend_result _php_mb_ini_mbstring_internal_encoding_set(const char *new_value, size_t new_value_length)
{
const mbfl_encoding *encoding;
if (!new_value || !new_value_length || !(encoding = mbfl_name2encoding(new_value))) {
/* falls back to UTF-8 if an unknown encoding name is given */
if (new_value) {
php_error_docref("ref.mbstring", E_WARNING, "Unknown encoding \"%s\" in ini setting", new_value);
}
encoding = &mbfl_encoding_utf8;
}
MBSTRG(internal_encoding) = encoding;
MBSTRG(current_internal_encoding) = encoding;
#ifdef HAVE_MBREGEX
{
const char *enc_name = new_value;
if (FAILURE == php_mb_regex_set_default_mbctype(enc_name)) {
/* falls back to UTF-8 if an unknown encoding name is given */
enc_name = "UTF-8";
php_mb_regex_set_default_mbctype(enc_name);
}
php_mb_regex_set_mbctype(new_value);
}
#endif
return SUCCESS;
}
/* }}} */
/* {{{ static PHP_INI_MH(OnUpdate_mbstring_internal_encoding) */
static PHP_INI_MH(OnUpdate_mbstring_internal_encoding)
{
if (new_value) {
php_error_docref("ref.mbstring", E_DEPRECATED, "Use of mbstring.internal_encoding is deprecated");
}
if (OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage) == FAILURE) {
return FAILURE;
}
if (new_value && ZSTR_LEN(new_value)) {
MBSTRG(internal_encoding_set) = 1;
return _php_mb_ini_mbstring_internal_encoding_set(ZSTR_VAL(new_value), ZSTR_LEN(new_value));
} else {
const char *encoding = php_get_internal_encoding();
MBSTRG(internal_encoding_set) = 0;
return _php_mb_ini_mbstring_internal_encoding_set(encoding, strlen(encoding));
}
}
/* }}} */
/* {{{ static PHP_INI_MH(OnUpdate_mbstring_substitute_character) */
static PHP_INI_MH(OnUpdate_mbstring_substitute_character)
{
if (new_value != NULL) {
if (zend_string_equals_literal_ci(new_value, "none")) {
MBSTRG(filter_illegal_mode) = MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE;
MBSTRG(current_filter_illegal_mode) = MBFL_OUTPUTFILTER_ILLEGAL_MODE_NONE;
} else if (zend_string_equals_literal_ci(new_value, "long")) {
MBSTRG(filter_illegal_mode) = MBFL_OUTPUTFILTER_ILLEGAL_MODE_LONG;
MBSTRG(current_filter_illegal_mode) = MBFL_OUTPUTFILTER_ILLEGAL_MODE_LONG;
} else if (zend_string_equals_literal_ci(new_value, "entity")) {
MBSTRG(filter_illegal_mode) = MBFL_OUTPUTFILTER_ILLEGAL_MODE_ENTITY;
MBSTRG(current_filter_illegal_mode) = MBFL_OUTPUTFILTER_ILLEGAL_MODE_ENTITY;
} else {
MBSTRG(filter_illegal_mode) = MBFL_OUTPUTFILTER_ILLEGAL_MODE_CHAR;
MBSTRG(current_filter_illegal_mode) = MBFL_OUTPUTFILTER_ILLEGAL_MODE_CHAR;
if (ZSTR_LEN(new_value) > 0) {
char *endptr = NULL;
int c = strtol(ZSTR_VAL(new_value), &endptr, 0);
if (*endptr == '\0') {
MBSTRG(filter_illegal_substchar) = c;
MBSTRG(current_filter_illegal_substchar) = c;
}
}
}
} else {
MBSTRG(filter_illegal_mode) = MBFL_OUTPUTFILTER_ILLEGAL_MODE_CHAR;
MBSTRG(current_filter_illegal_mode) = MBFL_OUTPUTFILTER_ILLEGAL_MODE_CHAR;
MBSTRG(filter_illegal_substchar) = '?';
MBSTRG(current_filter_illegal_substchar) = '?';
}
return SUCCESS;
}
/* }}} */
/* {{{ static PHP_INI_MH(OnUpdate_mbstring_encoding_translation) */
static PHP_INI_MH(OnUpdate_mbstring_encoding_translation)
{
if (new_value == NULL) {
return FAILURE;
}
OnUpdateBool(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
if (MBSTRG(encoding_translation)) {
sapi_unregister_post_entry(php_post_entries);
sapi_register_post_entries(mbstr_post_entries);
} else {
sapi_unregister_post_entry(mbstr_post_entries);
sapi_register_post_entries(php_post_entries);
}
return SUCCESS;
}
/* }}} */
/* {{{ static PHP_INI_MH(OnUpdate_mbstring_http_output_conv_mimetypes */
static PHP_INI_MH(OnUpdate_mbstring_http_output_conv_mimetypes)
{
zend_string *tmp;
void *re = NULL;
if (!new_value) {
new_value = entry->orig_value;
}
tmp = php_trim(new_value, NULL, 0, 3);
if (ZSTR_LEN(tmp) > 0) {
if (!(re = _php_mb_compile_regex(ZSTR_VAL(tmp)))) {
zend_string_release_ex(tmp, 0);
return FAILURE;
}
}
if (MBSTRG(http_output_conv_mimetypes)) {
_php_mb_free_regex(MBSTRG(http_output_conv_mimetypes));
}
MBSTRG(http_output_conv_mimetypes) = re;
zend_string_release_ex(tmp, 0);
return SUCCESS;
}
/* }}} */
/* }}} */
/* {{{ php.ini directive registration */
PHP_INI_BEGIN()
PHP_INI_ENTRY("mbstring.language", "neutral", PHP_INI_ALL, OnUpdate_mbstring_language)
PHP_INI_ENTRY("mbstring.detect_order", NULL, PHP_INI_ALL, OnUpdate_mbstring_detect_order)
PHP_INI_ENTRY("mbstring.http_input", NULL, PHP_INI_ALL, OnUpdate_mbstring_http_input)
PHP_INI_ENTRY("mbstring.http_output", NULL, PHP_INI_ALL, OnUpdate_mbstring_http_output)
STD_PHP_INI_ENTRY("mbstring.internal_encoding", NULL, PHP_INI_ALL, OnUpdate_mbstring_internal_encoding, internal_encoding_name, zend_mbstring_globals, mbstring_globals)
PHP_INI_ENTRY("mbstring.substitute_character", NULL, PHP_INI_ALL, OnUpdate_mbstring_substitute_character)
STD_PHP_INI_BOOLEAN("mbstring.encoding_translation", "0",
PHP_INI_SYSTEM | PHP_INI_PERDIR,
OnUpdate_mbstring_encoding_translation,
encoding_translation, zend_mbstring_globals, mbstring_globals)
PHP_INI_ENTRY("mbstring.http_output_conv_mimetypes",
"^(text/|application/xhtml\\+xml)",
PHP_INI_ALL,
OnUpdate_mbstring_http_output_conv_mimetypes)
STD_PHP_INI_BOOLEAN("mbstring.strict_detection", "0",
PHP_INI_ALL,
OnUpdateBool,
strict_detection, zend_mbstring_globals, mbstring_globals)
#ifdef HAVE_MBREGEX
STD_PHP_INI_ENTRY("mbstring.regex_stack_limit", "100000",PHP_INI_ALL, OnUpdateLong, regex_stack_limit, zend_mbstring_globals, mbstring_globals)
STD_PHP_INI_ENTRY("mbstring.regex_retry_limit", "1000000",PHP_INI_ALL, OnUpdateLong, regex_retry_limit, zend_mbstring_globals, mbstring_globals)
#endif
PHP_INI_END()
/* }}} */
static void mbstring_internal_encoding_changed_hook(void) {
/* One of the internal_encoding / input_encoding / output_encoding ini settings changed. */
if (!MBSTRG(internal_encoding_set)) {
const char *encoding = php_get_internal_encoding();
_php_mb_ini_mbstring_internal_encoding_set(encoding, strlen(encoding));
}
if (!MBSTRG(http_output_set)) {
const char *encoding = php_get_output_encoding();
_php_mb_ini_mbstring_http_output_set(encoding, strlen(encoding));
}
if (!MBSTRG(http_input_set)) {
const char *encoding = php_get_input_encoding();
_php_mb_ini_mbstring_http_input_set(encoding, strlen(encoding));
}
}
/* {{{ module global initialize handler */
static PHP_GINIT_FUNCTION(mbstring)
{
#if defined(COMPILE_DL_MBSTRING) && defined(ZTS)
ZEND_TSRMLS_CACHE_UPDATE();
#endif
mbstring_globals->language = mbfl_no_language_uni;
mbstring_globals->internal_encoding = NULL;
mbstring_globals->current_internal_encoding = mbstring_globals->internal_encoding;
mbstring_globals->http_output_encoding = &mbfl_encoding_pass;
mbstring_globals->current_http_output_encoding = &mbfl_encoding_pass;
mbstring_globals->http_input_identify = NULL;
mbstring_globals->http_input_identify_get = NULL;
mbstring_globals->http_input_identify_post = NULL;
mbstring_globals->http_input_identify_cookie = NULL;
mbstring_globals->http_input_identify_string = NULL;
mbstring_globals->http_input_list = NULL;
mbstring_globals->http_input_list_size = 0;
mbstring_globals->detect_order_list = NULL;
mbstring_globals->detect_order_list_size = 0;
mbstring_globals->current_detect_order_list = NULL;