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dis-bench / src /php /php-src /ext /iconv /iconv.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. |
+----------------------------------------------------------------------+
| Authors: Rui Hirokawa <rui_hirokawa@ybb.ne.jp> |
| Stig Bakken <ssb@php.net> |
| Moriyoshi Koizumi <moriyoshi@php.net> |
+----------------------------------------------------------------------+
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "php.h"
#include "ext/standard/info.h"
#include "main/php_output.h"
#include "SAPI.h"
#include "php_ini.h"
#include <stdlib.h>
#include <errno.h>
#include "php_iconv.h"
#ifdef HAVE_ICONV
#include <iconv.h>
#ifdef HAVE_GLIBC_ICONV
#include <gnu/libc-version.h>
#endif
#ifdef HAVE_LIBICONV
#undef iconv
#endif
#if defined(__NetBSD__)
// unfortunately, netbsd has still the old non posix conformant signature
// libiconv tends to match the eventual system's iconv too.
#define ICONV_CONST const
#else
#define ICONV_CONST
#endif
#include "zend_smart_str.h"
#include "ext/standard/base64.h"
#include "ext/standard/quot_print.h"
#ifdef PHP_ICONV_IMPL
#define PHP_ICONV_IMPL_VALUE PHP_ICONV_IMPL
#elif defined(HAVE_LIBICONV)
#define PHP_ICONV_IMPL_VALUE "libiconv"
#else
#define PHP_ICONV_IMPL_VALUE "unknown"
#endif
static const char *get_iconv_version(void) {
const char *version = "unknown";
#ifdef HAVE_LIBICONV
static char buf[16];
snprintf(buf, sizeof(buf), "%d.%d", _libiconv_version >> 8, _libiconv_version & 0xff);
version = buf;
#elif defined(HAVE_GLIBC_ICONV)
version = gnu_get_libc_version();
#endif
return version;
}
#define PHP_ICONV_MIME_DECODE_STRICT (1<<0)
#define PHP_ICONV_MIME_DECODE_CONTINUE_ON_ERROR (1<<1)
#include "iconv_arginfo.h"
#define _php_iconv_memequal(a, b, c) \
(memcmp(a, b, c) == 0)
ZEND_DECLARE_MODULE_GLOBALS(iconv)
static PHP_GINIT_FUNCTION(iconv);
/* {{{ iconv_module_entry */
zend_module_entry iconv_module_entry = {
STANDARD_MODULE_HEADER,
"iconv",
ext_functions,
PHP_MINIT(miconv),
PHP_MSHUTDOWN(miconv),
NULL,
NULL,
PHP_MINFO(miconv),
PHP_ICONV_VERSION,
PHP_MODULE_GLOBALS(iconv),
PHP_GINIT(iconv),
NULL,
NULL,
STANDARD_MODULE_PROPERTIES_EX
};
/* }}} */
#ifdef COMPILE_DL_ICONV
#ifdef ZTS
ZEND_TSRMLS_CACHE_DEFINE()
#endif
ZEND_GET_MODULE(iconv)
#endif
/* {{{ PHP_GINIT_FUNCTION */
static PHP_GINIT_FUNCTION(iconv)
{
#if defined(COMPILE_DL_ICONV) && defined(ZTS)
ZEND_TSRMLS_CACHE_UPDATE();
#endif
iconv_globals->input_encoding = NULL;
iconv_globals->output_encoding = NULL;
iconv_globals->internal_encoding = NULL;
}
/* }}} */
#if defined(HAVE_LIBICONV) && defined(ICONV_ALIASED_LIBICONV)
#define iconv libiconv
#endif
/* {{{ typedef enum php_iconv_enc_scheme_t */
typedef enum _php_iconv_enc_scheme_t {
PHP_ICONV_ENC_SCHEME_BASE64,
PHP_ICONV_ENC_SCHEME_QPRINT
} php_iconv_enc_scheme_t;
/* }}} */
/* {{{ prototypes */
static php_iconv_err_t _php_iconv_appendl(smart_str *d, const char *s, size_t l, iconv_t cd);
static php_iconv_err_t _php_iconv_appendc(smart_str *d, const char c, iconv_t cd);
static void _php_iconv_show_error(php_iconv_err_t err, const char *out_charset, const char *in_charset);
static php_iconv_err_t _php_iconv_strlen(size_t *pretval, const char *str, size_t nbytes, const char *enc);
static php_iconv_err_t _php_iconv_substr(smart_str *pretval, const char *str, size_t nbytes, zend_long offset, zend_long len, const char *enc);
static php_iconv_err_t _php_iconv_mime_encode(smart_str *pretval, const char *fname, size_t fname_nbytes, const char *fval, size_t fval_nbytes, size_t max_line_len, const char *lfchars, php_iconv_enc_scheme_t enc_scheme, const char *out_charset, const char *enc);
static php_iconv_err_t _php_iconv_mime_decode(smart_str *pretval, const char *str, size_t str_nbytes, const char *enc, const char **next_pos, int mode);
static php_iconv_err_t php_iconv_stream_filter_register_factory(void);
static php_iconv_err_t php_iconv_stream_filter_unregister_factory(void);
static zend_result php_iconv_output_conflict(const char *handler_name, size_t handler_name_len);
static php_output_handler *php_iconv_output_handler_init(const char *name, size_t name_len, size_t chunk_size, int flags);
static zend_result php_iconv_output_handler(void **nothing, php_output_context *output_context);
/* }}} */
/* {{{ static globals */
static const char _generic_superset_name[] = ICONV_UCS4_ENCODING;
#define GENERIC_SUPERSET_NAME _generic_superset_name
#define GENERIC_SUPERSET_NBYTES 4
/* }}} */
static PHP_INI_MH(OnUpdateInputEncoding)
{
if (ZSTR_LEN(new_value) >= ICONV_CSNMAXLEN) {
return FAILURE;
}
if (stage & (PHP_INI_STAGE_ACTIVATE | PHP_INI_STAGE_RUNTIME)) {
php_error_docref("ref.iconv", E_DEPRECATED, "Use of iconv.input_encoding is deprecated");
}
OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
return SUCCESS;
}
static PHP_INI_MH(OnUpdateOutputEncoding)
{
if (ZSTR_LEN(new_value) >= ICONV_CSNMAXLEN) {
return FAILURE;
}
if (stage & (PHP_INI_STAGE_ACTIVATE | PHP_INI_STAGE_RUNTIME)) {
php_error_docref("ref.iconv", E_DEPRECATED, "Use of iconv.output_encoding is deprecated");
}
OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
return SUCCESS;
}
static PHP_INI_MH(OnUpdateInternalEncoding)
{
if (ZSTR_LEN(new_value) >= ICONV_CSNMAXLEN) {
return FAILURE;
}
if (stage & (PHP_INI_STAGE_ACTIVATE | PHP_INI_STAGE_RUNTIME)) {
php_error_docref("ref.iconv", E_DEPRECATED, "Use of iconv.internal_encoding is deprecated");
}
OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
return SUCCESS;
}
/* {{{ PHP_INI */
PHP_INI_BEGIN()
STD_PHP_INI_ENTRY("iconv.input_encoding", "", PHP_INI_ALL, OnUpdateInputEncoding, input_encoding, zend_iconv_globals, iconv_globals)
STD_PHP_INI_ENTRY("iconv.output_encoding", "", PHP_INI_ALL, OnUpdateOutputEncoding, output_encoding, zend_iconv_globals, iconv_globals)
STD_PHP_INI_ENTRY("iconv.internal_encoding", "", PHP_INI_ALL, OnUpdateInternalEncoding, internal_encoding, zend_iconv_globals, iconv_globals)
PHP_INI_END()
/* }}} */
/* {{{ PHP_MINIT_FUNCTION */
PHP_MINIT_FUNCTION(miconv)
{
REGISTER_INI_ENTRIES();
if (php_iconv_stream_filter_register_factory() != PHP_ICONV_ERR_SUCCESS) {
return FAILURE;
}
register_iconv_symbols(module_number);
php_output_handler_alias_register(ZEND_STRL("ob_iconv_handler"), php_iconv_output_handler_init);
php_output_handler_conflict_register(ZEND_STRL("ob_iconv_handler"), php_iconv_output_conflict);
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION */
PHP_MSHUTDOWN_FUNCTION(miconv)
{
php_iconv_stream_filter_unregister_factory();
UNREGISTER_INI_ENTRIES();
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION */
PHP_MINFO_FUNCTION(miconv)
{
const zval *iconv_impl, *iconv_ver;
iconv_impl = zend_get_constant_str("ICONV_IMPL", sizeof("ICONV_IMPL")-1);
iconv_ver = zend_get_constant_str("ICONV_VERSION", sizeof("ICONV_VERSION")-1);
php_info_print_table_start();
php_info_print_table_row(2, "iconv support", "enabled");
php_info_print_table_row(2, "iconv implementation", Z_STRVAL_P(iconv_impl));
php_info_print_table_row(2, "iconv library version", Z_STRVAL_P(iconv_ver));
php_info_print_table_end();
DISPLAY_INI_ENTRIES();
}
/* }}} */
static const char *get_internal_encoding(void) {
if (ICONVG(internal_encoding) && ICONVG(internal_encoding)[0]) {
return ICONVG(internal_encoding);
}
return php_get_internal_encoding();
}
static const char *get_input_encoding(void) {
if (ICONVG(input_encoding) && ICONVG(input_encoding)[0]) {
return ICONVG(input_encoding);
}
return php_get_input_encoding();
}
static const char *get_output_encoding(void) {
if (ICONVG(output_encoding) && ICONVG(output_encoding)[0]) {
return ICONVG(output_encoding);
}
return php_get_output_encoding();
}
static zend_result php_iconv_output_conflict(const char *handler_name, size_t handler_name_len)
{
if (php_output_get_level()) {
if (php_output_handler_conflict(handler_name, handler_name_len, ZEND_STRL("ob_iconv_handler"))
|| php_output_handler_conflict(handler_name, handler_name_len, ZEND_STRL("mb_output_handler"))) {
return FAILURE;
}
}
return SUCCESS;
}
static php_output_handler *php_iconv_output_handler_init(const char *handler_name, size_t handler_name_len, size_t chunk_size, int flags)
{
return php_output_handler_create_internal(handler_name, handler_name_len, php_iconv_output_handler, chunk_size, flags);
}
static zend_result php_iconv_output_handler(void **nothing, php_output_context *output_context)
{
char *content_type, *mimetype = NULL;
if (output_context->op & PHP_OUTPUT_HANDLER_START) {
int output_status = php_output_get_status();
if (output_status & PHP_OUTPUT_SENT) {
return FAILURE;
}
int mimetype_len = 0;
if (SG(sapi_headers).mimetype && !strncasecmp(SG(sapi_headers).mimetype, "text/", 5)) {
const char *s = strchr(SG(sapi_headers).mimetype,';');
if (s == NULL){
mimetype = SG(sapi_headers).mimetype;
} else {
mimetype = SG(sapi_headers).mimetype;
mimetype_len = (int)(s - SG(sapi_headers).mimetype);
}
} else if (SG(sapi_headers).send_default_content_type) {
mimetype = SG(default_mimetype) ? SG(default_mimetype) : SAPI_DEFAULT_MIMETYPE;
}
if (mimetype != NULL && (!(output_context->op & PHP_OUTPUT_HANDLER_CLEAN) || ((output_context->op & PHP_OUTPUT_HANDLER_START) && !(output_context->op & PHP_OUTPUT_HANDLER_FINAL)))) {
size_t len;
const char *p = strstr(get_output_encoding(), "//");
if (p) {
len = spprintf(&content_type, 0, "Content-Type:%.*s; charset=%.*s", mimetype_len ? mimetype_len : (int) strlen(mimetype), mimetype, (int) (p - get_output_encoding()), get_output_encoding());
} else {
len = spprintf(&content_type, 0, "Content-Type:%.*s; charset=%s", mimetype_len ? mimetype_len : (int) strlen(mimetype), mimetype, get_output_encoding());
}
if (content_type && SUCCESS == sapi_add_header(content_type, len, 0)) {
SG(sapi_headers).send_default_content_type = 0;
php_output_handler_hook(PHP_OUTPUT_HANDLER_HOOK_IMMUTABLE, NULL);
}
}
}
if (output_context->in.used) {
zend_string *out;
output_context->out.free = 1;
_php_iconv_show_error(php_iconv_string(output_context->in.data, output_context->in.used, &out, get_output_encoding(), get_internal_encoding()), get_output_encoding(), get_internal_encoding());
if (out) {
output_context->out.data = estrndup(ZSTR_VAL(out), ZSTR_LEN(out));
output_context->out.used = ZSTR_LEN(out);
zend_string_efree(out);
} else {
output_context->out.data = NULL;
output_context->out.used = 0;
}
}
return SUCCESS;
}
/* {{{ _php_iconv_appendl() */
static php_iconv_err_t _php_iconv_appendl(smart_str *d, const char *s, size_t l, iconv_t cd)
{
const char *in_p = s;
size_t in_left = l;
char *out_p;
size_t out_left = 0;
size_t buf_growth = 128;
if (in_p != NULL) {
while (in_left > 0) {
out_left = buf_growth;
smart_str_alloc(d, out_left, 0);
out_p = ZSTR_VAL((d)->s) + ZSTR_LEN((d)->s);
if (iconv(cd, (ICONV_CONST char **)&in_p, &in_left, (char **) &out_p, &out_left) == (size_t)-1) {
switch (errno) {
case EINVAL:
return PHP_ICONV_ERR_ILLEGAL_CHAR;
case EILSEQ:
return PHP_ICONV_ERR_ILLEGAL_SEQ;
case E2BIG:
break;
default:
return PHP_ICONV_ERR_UNKNOWN;
}
}
ZSTR_LEN((d)->s) += (buf_growth - out_left);
buf_growth <<= 1;
}
} else {
for (;;) {
out_left = buf_growth;
smart_str_alloc(d, out_left, 0);
out_p = ZSTR_VAL((d)->s) + ZSTR_LEN((d)->s);
if (iconv(cd, NULL, NULL, (char **) &out_p, &out_left) == (size_t)0) {
ZSTR_LEN((d)->s) += (buf_growth - out_left);
break;
} else {
if (errno != E2BIG) {
return PHP_ICONV_ERR_UNKNOWN;
}
}
ZSTR_LEN((d)->s) += (buf_growth - out_left);
buf_growth <<= 1;
}
}
return PHP_ICONV_ERR_SUCCESS;
}
/* }}} */
/* {{{ _php_iconv_appendc() */
static php_iconv_err_t _php_iconv_appendc(smart_str *d, const char c, iconv_t cd)
{
return _php_iconv_appendl(d, &c, 1, cd);
}
/* }}} */
/* {{{ */
#ifdef ICONV_BROKEN_IGNORE
static bool _php_check_ignore(const char *charset)
{
size_t clen = strlen(charset);
if (clen >= 9 && strcmp("//IGNORE", charset+clen-8) == 0) {
return true;
}
if (clen >= 19 && strcmp("//IGNORE//TRANSLIT", charset+clen-18) == 0) {
return true;
}
return false;
}
#else
#define _php_check_ignore(x) (0)
#endif
/* }}} */
/* {{{ php_iconv_string() */
PHP_ICONV_API php_iconv_err_t php_iconv_string(const char *in_p, size_t in_len, zend_string **out, const char *out_charset, const char *in_charset)
{
iconv_t cd;
size_t in_left, out_size, out_left;
char *out_p;
size_t bsz, result = 0;
php_iconv_err_t retval = PHP_ICONV_ERR_SUCCESS;
zend_string *out_buf;
bool ignore_ilseq = _php_check_ignore(out_charset);
*out = NULL;
cd = iconv_open(out_charset, in_charset);
if (cd == (iconv_t)(-1)) {
if (errno == EINVAL) {
return PHP_ICONV_ERR_WRONG_CHARSET;
} else {
return PHP_ICONV_ERR_CONVERTER;
}
}
in_left= in_len;
out_left = in_len + 32; /* Avoid realloc() most cases */
out_size = 0;
bsz = out_left;
out_buf = zend_string_alloc(bsz, 0);
out_p = ZSTR_VAL(out_buf);
while (in_left > 0) {
result = iconv(cd, (ICONV_CONST char **) &in_p, &in_left, (char **) &out_p, &out_left);
out_size = bsz - out_left;
if (result == (size_t)(-1)) {
if (ignore_ilseq && errno == EILSEQ) {
if (in_left <= 1) {
result = 0;
} else {
errno = 0;
in_p++;
in_left--;
continue;
}
}
if (errno == E2BIG && in_left > 0) {
/* converted string is longer than out buffer */
bsz += in_len;
out_buf = zend_string_extend(out_buf, bsz, 0);
out_p = ZSTR_VAL(out_buf);
out_p += out_size;
out_left = bsz - out_size;
continue;
}
}
break;
}
if (result != (size_t)(-1)) {
/* flush the shift-out sequences */
for (;;) {
result = iconv(cd, NULL, NULL, (char **) &out_p, &out_left);
out_size = bsz - out_left;
if (result != (size_t)(-1)) {
break;
}
if (errno == E2BIG) {
bsz += 16;
out_buf = zend_string_extend(out_buf, bsz, 0);
out_p = ZSTR_VAL(out_buf);
out_p += out_size;
out_left = bsz - out_size;
} else {
break;
}
}
}
iconv_close(cd);
if (result == (size_t)(-1)) {
switch (errno) {
case EINVAL:
retval = PHP_ICONV_ERR_ILLEGAL_CHAR;
break;
case EILSEQ:
retval = PHP_ICONV_ERR_ILLEGAL_SEQ;
break;
case E2BIG:
/* should not happen */
retval = PHP_ICONV_ERR_TOO_BIG;
break;
default:
/* other error */
zend_string_efree(out_buf);
return PHP_ICONV_ERR_UNKNOWN;
}
}
*out_p = '\0';
ZSTR_LEN(out_buf) = out_size;
*out = out_buf;
return retval;
}
/* }}} */
/* {{{ _php_iconv_strlen() */
static php_iconv_err_t _php_iconv_strlen(size_t *pretval, const char *str, size_t nbytes, const char *enc)
{
char buf[GENERIC_SUPERSET_NBYTES*2];
php_iconv_err_t err = PHP_ICONV_ERR_SUCCESS;
iconv_t cd;
const char *in_p;
size_t in_left;
char *out_p;
size_t out_left;
size_t cnt;
bool more;
*pretval = (size_t)-1;
cd = iconv_open(GENERIC_SUPERSET_NAME, enc);
if (cd == (iconv_t)(-1)) {
if (errno == EINVAL) {
return PHP_ICONV_ERR_WRONG_CHARSET;
} else {
return PHP_ICONV_ERR_CONVERTER;
}
}
errno = 0;
out_left = 0;
more = nbytes > 0;
for (in_p = str, in_left = nbytes, cnt = 0; more;) {
out_p = buf;
out_left = sizeof(buf);
more = in_left > 0;
iconv(cd, more ? (ICONV_CONST char **)&in_p : NULL, more ? &in_left : NULL, (char **) &out_p, &out_left);
if (out_left == sizeof(buf)) {
break;
} else {
ZEND_ASSERT((sizeof(buf) - out_left) % GENERIC_SUPERSET_NBYTES == 0);
cnt += (sizeof(buf) - out_left) / GENERIC_SUPERSET_NBYTES;
}
}
switch (errno) {
case EINVAL:
err = PHP_ICONV_ERR_ILLEGAL_CHAR;
break;
case EILSEQ:
err = PHP_ICONV_ERR_ILLEGAL_SEQ;
break;
case E2BIG:
case 0:
*pretval = cnt;
break;
default:
err = PHP_ICONV_ERR_UNKNOWN;
break;
}
iconv_close(cd);
return err;
}
/* }}} */
/* {{{ _php_iconv_substr() */
static php_iconv_err_t _php_iconv_substr(smart_str *pretval,
const char *str, size_t nbytes, zend_long offset, zend_long len, const char *enc)
{
char buf[GENERIC_SUPERSET_NBYTES];
php_iconv_err_t err = PHP_ICONV_ERR_SUCCESS;
iconv_t cd1, cd2;
const char *in_p;
size_t in_left;
char *out_p;
size_t out_left;
size_t cnt;
size_t total_len;
bool more;
err = _php_iconv_strlen(&total_len, str, nbytes, enc);
if (err != PHP_ICONV_ERR_SUCCESS) {
return err;
}
if (offset < 0) {
if ((offset += total_len) < 0) {
offset = 0;
}
} else if ((size_t)offset > total_len) {
offset = total_len;
}
if (len < 0) {
if ((len += (total_len - offset)) < 0) {
len = 0;
}
} else if ((size_t)len > total_len) {
len = total_len;
}
if ((size_t)(offset + len) > total_len ) {
/* trying to compute the length */
len = total_len - offset;
}
if (len == 0) {
smart_str_appendl(pretval, "", 0);
smart_str_0(pretval);
return PHP_ICONV_ERR_SUCCESS;
}
cd1 = iconv_open(GENERIC_SUPERSET_NAME, enc);
if (cd1 == (iconv_t)(-1)) {
if (errno == EINVAL) {
return PHP_ICONV_ERR_WRONG_CHARSET;
} else {
return PHP_ICONV_ERR_CONVERTER;
}
}
cd2 = (iconv_t)NULL;
errno = 0;
more = nbytes > 0 && len > 0;
for (in_p = str, in_left = nbytes, cnt = 0; more; ++cnt) {
out_p = buf;
out_left = sizeof(buf);
more = in_left > 0 && len > 0;
iconv(cd1, more ? (ICONV_CONST char **)&in_p : NULL, more ? &in_left : NULL, (char **) &out_p, &out_left);
if (out_left == sizeof(buf)) {
break;
}
if ((zend_long)cnt >= offset) {
if (cd2 == (iconv_t)NULL) {
cd2 = iconv_open(enc, GENERIC_SUPERSET_NAME);
if (cd2 == (iconv_t)(-1)) {
cd2 = (iconv_t)NULL;
if (errno == EINVAL) {
err = PHP_ICONV_ERR_WRONG_CHARSET;
} else {
err = PHP_ICONV_ERR_CONVERTER;
}
break;
}
}
if (_php_iconv_appendl(pretval, buf, sizeof(buf), cd2) != PHP_ICONV_ERR_SUCCESS) {
break;
}
--len;
}
}
switch (errno) {
case EINVAL:
err = PHP_ICONV_ERR_ILLEGAL_CHAR;
break;
case EILSEQ:
err = PHP_ICONV_ERR_ILLEGAL_SEQ;
break;
case E2BIG:
break;
}
if (err == PHP_ICONV_ERR_SUCCESS) {
if (cd2 != (iconv_t)NULL) {
_php_iconv_appendl(pretval, NULL, 0, cd2);
}
smart_str_0(pretval);
}
if (cd1 != (iconv_t)NULL) {
iconv_close(cd1);
}
if (cd2 != (iconv_t)NULL) {
iconv_close(cd2);
}
return err;
}
/* }}} */
/* {{{ _php_iconv_strpos() */
static php_iconv_err_t _php_iconv_strpos(size_t *pretval,
const char *haystk, size_t haystk_nbytes,
const char *ndl, size_t ndl_nbytes,
size_t offset, const char *enc, bool reverse)
{
char buf[GENERIC_SUPERSET_NBYTES];
php_iconv_err_t err = PHP_ICONV_ERR_SUCCESS;
iconv_t cd;
const char *in_p;
size_t in_left;
char *out_p;
size_t out_left;
size_t cnt;
zend_string *ndl_buf;
const char *ndl_buf_p;
size_t ndl_buf_left;
size_t match_ofs;
bool more;
*pretval = (size_t)-1;
err = php_iconv_string(ndl, ndl_nbytes, &ndl_buf, GENERIC_SUPERSET_NAME, enc);
if (err != PHP_ICONV_ERR_SUCCESS) {
if (ndl_buf != NULL) {
zend_string_efree(ndl_buf);
}
return err;
}
cd = iconv_open(GENERIC_SUPERSET_NAME, enc);
if (cd == (iconv_t)(-1)) {
if (ndl_buf != NULL) {
zend_string_efree(ndl_buf);
}
if (errno == EINVAL) {
return PHP_ICONV_ERR_WRONG_CHARSET;
} else {
return PHP_ICONV_ERR_CONVERTER;
}
}
ndl_buf_p = ZSTR_VAL(ndl_buf);
ndl_buf_left = ZSTR_LEN(ndl_buf);
match_ofs = (size_t)-1;
more = haystk_nbytes > 0;
for (in_p = haystk, in_left = haystk_nbytes, cnt = 0; more; ++cnt) {
out_p = buf;
out_left = sizeof(buf);
more = in_left > 0;
size_t iconv_ret = iconv(cd, more ? (ICONV_CONST char **)&in_p : NULL, more ? &in_left : NULL, (char **) &out_p, &out_left);
if (out_left == sizeof(buf)) {
break;
}
if (iconv_ret == (size_t)-1) {
switch (errno) {
case EINVAL:
err = PHP_ICONV_ERR_ILLEGAL_CHAR;
break;
case EILSEQ:
err = PHP_ICONV_ERR_ILLEGAL_SEQ;
break;
case E2BIG:
break;
default:
err = PHP_ICONV_ERR_UNKNOWN;
break;
}
}
if (cnt >= offset) {
if (_php_iconv_memequal(buf, ndl_buf_p, sizeof(buf))) {
if (match_ofs == (size_t)-1) {
match_ofs = cnt;
}
ndl_buf_p += GENERIC_SUPERSET_NBYTES;
ndl_buf_left -= GENERIC_SUPERSET_NBYTES;
if (ndl_buf_left == 0) {
*pretval = match_ofs;
if (reverse) {
/* If searching backward, continue trying to find a later match. */
ndl_buf_p = ZSTR_VAL(ndl_buf);
ndl_buf_left = ZSTR_LEN(ndl_buf);
match_ofs = -1;
} else {
/* If searching forward, stop at first match. */
break;
}
}
} else {
size_t i, j, lim;
i = 0;
j = GENERIC_SUPERSET_NBYTES;
lim = (size_t)(ndl_buf_p - ZSTR_VAL(ndl_buf));
while (j < lim) {
if (_php_iconv_memequal(&ZSTR_VAL(ndl_buf)[j], &ZSTR_VAL(ndl_buf)[i],
GENERIC_SUPERSET_NBYTES)) {
i += GENERIC_SUPERSET_NBYTES;
} else {
j -= i;
i = 0;
}
j += GENERIC_SUPERSET_NBYTES;
}
if (_php_iconv_memequal(buf, &ZSTR_VAL(ndl_buf)[i], sizeof(buf))) {
match_ofs += (lim - i) / GENERIC_SUPERSET_NBYTES;
i += GENERIC_SUPERSET_NBYTES;
ndl_buf_p = &ZSTR_VAL(ndl_buf)[i];
ndl_buf_left = ZSTR_LEN(ndl_buf) - i;
} else {
match_ofs = (size_t)-1;
ndl_buf_p = ZSTR_VAL(ndl_buf);
ndl_buf_left = ZSTR_LEN(ndl_buf);
}
}
}
}
if (ndl_buf) {
zend_string_efree(ndl_buf);
}
iconv_close(cd);
if (err == PHP_ICONV_ERR_SUCCESS && offset > cnt) {
return PHP_ICONV_ERR_OUT_BY_BOUNDS;
}
return err;
}
/* }}} */
/* {{{ _php_iconv_mime_encode() */
static php_iconv_err_t _php_iconv_mime_encode(smart_str *pretval, const char *fname, size_t fname_nbytes, const char *fval, size_t fval_nbytes, size_t max_line_len, const char *lfchars, php_iconv_enc_scheme_t enc_scheme, const char *out_charset, const char *enc)
{
php_iconv_err_t err = PHP_ICONV_ERR_SUCCESS;
iconv_t cd = (iconv_t)(-1), cd_pl = (iconv_t)(-1);
size_t char_cnt = 0;
size_t out_charset_len;
size_t lfchars_len;
char *buf = NULL;
const char *in_p;
size_t in_left;
char *out_p;
size_t out_left;
zend_string *encoded = NULL;
static const int qp_table[256] = {
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0x00 */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0x10 */
3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x20 */
1, 1, 1, 1, 1, 1, 1 ,1, 1, 1, 1, 1, 1, 3, 1, 3, /* 0x30 */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x40 */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, /* 0x50 */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x60 */
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, /* 0x70 */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0x80 */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0x90 */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0xA0 */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0xB0 */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0xC0 */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0xD0 */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, /* 0xE0 */
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 /* 0xF0 */
};
out_charset_len = strlen(out_charset);
lfchars_len = strlen(lfchars);
if ((fname_nbytes + 2) >= max_line_len
|| (out_charset_len + 12) >= max_line_len) {
/* field name is too long */
err = PHP_ICONV_ERR_TOO_BIG;
goto out;
}
cd_pl = iconv_open(ICONV_ASCII_ENCODING, enc);
if (cd_pl == (iconv_t)(-1)) {
if (errno == EINVAL) {
err = PHP_ICONV_ERR_WRONG_CHARSET;
} else {
err = PHP_ICONV_ERR_CONVERTER;
}
goto out;
}
cd = iconv_open(out_charset, enc);
if (cd == (iconv_t)(-1)) {
if (errno == EINVAL) {
err = PHP_ICONV_ERR_WRONG_CHARSET;
} else {
err = PHP_ICONV_ERR_CONVERTER;
}
goto out;
}
buf = safe_emalloc(1, max_line_len, 5);
char_cnt = max_line_len;
_php_iconv_appendl(pretval, fname, fname_nbytes, cd_pl);
char_cnt -= fname_nbytes;
smart_str_appendl(pretval, ": ", sizeof(": ") - 1);
char_cnt -= 2;
in_p = fval;
in_left = fval_nbytes;
do {
size_t prev_in_left;
size_t out_size;
size_t encoded_word_min_len = sizeof("=\?\?X\?\?=")-1 + out_charset_len + (enc_scheme == PHP_ICONV_ENC_SCHEME_BASE64 ? 4 : 3);
if (char_cnt < encoded_word_min_len + lfchars_len + 1) {
/* lfchars must be encoded in ASCII here*/
smart_str_appendl(pretval, lfchars, lfchars_len);
smart_str_appendc(pretval, ' ');
char_cnt = max_line_len - 1;
}
smart_str_appendl(pretval, "=?", sizeof("=?") - 1);
char_cnt -= 2;
smart_str_appendl(pretval, out_charset, out_charset_len);
char_cnt -= out_charset_len;
smart_str_appendc(pretval, '?');
char_cnt --;
switch (enc_scheme) {
case PHP_ICONV_ENC_SCHEME_BASE64: {
size_t ini_in_left;
const char *ini_in_p;
size_t out_reserved = 4;
smart_str_appendc(pretval, 'B');
char_cnt--;
smart_str_appendc(pretval, '?');
char_cnt--;
prev_in_left = ini_in_left = in_left;
ini_in_p = in_p;
out_size = (char_cnt - 2) / 4 * 3;
for (;;) {
out_p = buf;
if (out_size <= out_reserved) {
err = PHP_ICONV_ERR_TOO_BIG;
goto out;
}
out_left = out_size - out_reserved;
if (iconv(cd, (ICONV_CONST char **)&in_p, &in_left, (char **) &out_p, &out_left) == (size_t)-1) {
switch (errno) {
case EINVAL:
err = PHP_ICONV_ERR_ILLEGAL_CHAR;
goto out;
case EILSEQ:
err = PHP_ICONV_ERR_ILLEGAL_SEQ;
goto out;
case E2BIG:
if (prev_in_left == in_left) {
err = PHP_ICONV_ERR_TOO_BIG;
goto out;
}
break;
default:
err = PHP_ICONV_ERR_UNKNOWN;
goto out;
}
}
out_left += out_reserved;
if (iconv(cd, NULL, NULL, (char **) &out_p, &out_left) == (size_t)-1) {
if (errno != E2BIG) {
err = PHP_ICONV_ERR_UNKNOWN;
goto out;
}
} else {
break;
}
if (iconv(cd, NULL, NULL, NULL, NULL) == (size_t)-1) {
err = PHP_ICONV_ERR_UNKNOWN;
goto out;
}
out_reserved += 4;
in_left = ini_in_left;
in_p = ini_in_p;
}
prev_in_left = in_left;
encoded = php_base64_encode((unsigned char *) buf, (out_size - out_left));
if (char_cnt < ZSTR_LEN(encoded)) {
/* something went wrong! */
err = PHP_ICONV_ERR_UNKNOWN;
goto out;
}
smart_str_appendl(pretval, ZSTR_VAL(encoded), ZSTR_LEN(encoded));
char_cnt -= ZSTR_LEN(encoded);
smart_str_appendl(pretval, "?=", sizeof("?=") - 1);
char_cnt -= 2;
zend_string_release_ex(encoded, 0);
encoded = NULL;
} break; /* case PHP_ICONV_ENC_SCHEME_BASE64: */
case PHP_ICONV_ENC_SCHEME_QPRINT: {
size_t ini_in_left;
const char *ini_in_p;
const unsigned char *p;
size_t nbytes_required;
smart_str_appendc(pretval, 'Q');
char_cnt--;
smart_str_appendc(pretval, '?');
char_cnt--;
prev_in_left = ini_in_left = in_left;
ini_in_p = in_p;
for (out_size = (char_cnt - 2); out_size > 0;) {
nbytes_required = 0;
out_p = buf;
out_left = out_size;
if (iconv(cd, (ICONV_CONST char **)&in_p, &in_left, (char **) &out_p, &out_left) == (size_t)-1) {
switch (errno) {
case EINVAL:
err = PHP_ICONV_ERR_ILLEGAL_CHAR;
goto out;
case EILSEQ:
err = PHP_ICONV_ERR_ILLEGAL_SEQ;
goto out;
case E2BIG:
if (prev_in_left == in_left) {
err = PHP_ICONV_ERR_UNKNOWN;
goto out;
}
break;
default:
err = PHP_ICONV_ERR_UNKNOWN;
goto out;
}
}
if (iconv(cd, NULL, NULL, (char **) &out_p, &out_left) == (size_t)-1) {
if (errno != E2BIG) {
err = PHP_ICONV_ERR_UNKNOWN;
goto out;
}
}
for (p = (unsigned char *)buf; p < (unsigned char *)out_p; p++) {
nbytes_required += qp_table[*p];
}
if (nbytes_required <= char_cnt - 2) {
break;
}
out_size -= ((nbytes_required - (char_cnt - 2)) + 2) / 3;
in_left = ini_in_left;
in_p = ini_in_p;
}
for (p = (unsigned char *)buf; p < (unsigned char *)out_p; p++) {
if (qp_table[*p] == 1) {
smart_str_appendc(pretval, *(char *)p);
char_cnt--;
} else {
static const char qp_digits[] = "0123456789ABCDEF";
smart_str_appendc(pretval, '=');
smart_str_appendc(pretval, qp_digits[(*p >> 4) & 0x0f]);
smart_str_appendc(pretval, qp_digits[(*p & 0x0f)]);
char_cnt -= 3;
}
}
smart_str_appendl(pretval, "?=", sizeof("?=") - 1);
char_cnt -= 2;
if (iconv(cd, NULL, NULL, NULL, NULL) == (size_t)-1) {
err = PHP_ICONV_ERR_UNKNOWN;
goto out;
}
} break; /* case PHP_ICONV_ENC_SCHEME_QPRINT: */
}
} while (in_left > 0);
smart_str_0(pretval);
out:
if (cd != (iconv_t)(-1)) {
iconv_close(cd);
}
if (cd_pl != (iconv_t)(-1)) {
iconv_close(cd_pl);
}
if (encoded != NULL) {
zend_string_release_ex(encoded, 0);
}
if (buf != NULL) {
efree(buf);
}
return err;
}
/* }}} */
/* {{{ _php_iconv_mime_decode() */
static php_iconv_err_t _php_iconv_mime_decode(smart_str *pretval, const char *str, size_t str_nbytes, const char *enc, const char **next_pos, int mode)
{
php_iconv_err_t err = PHP_ICONV_ERR_SUCCESS;
iconv_t cd = (iconv_t)(-1), cd_pl = (iconv_t)(-1);
const char *p1;
size_t str_left;
unsigned int scan_stat = 0;
const char *csname = NULL;
size_t csname_len;
const char *encoded_text = NULL;
size_t encoded_text_len = 0;
const char *encoded_word = NULL;
const char *spaces = NULL;
php_iconv_enc_scheme_t enc_scheme = PHP_ICONV_ENC_SCHEME_BASE64;
if (next_pos != NULL) {
*next_pos = NULL;
}
cd_pl = iconv_open(enc, ICONV_ASCII_ENCODING);
if (cd_pl == (iconv_t)(-1)) {
if (errno == EINVAL) {
err = PHP_ICONV_ERR_WRONG_CHARSET;
} else {
err = PHP_ICONV_ERR_CONVERTER;
}
goto out;
}
p1 = str;
for (str_left = str_nbytes; str_left > 0; str_left--, p1++) {
int eos = 0;
switch (scan_stat) {
case 0: /* expecting any character */
switch (*p1) {
case '\r': /* part of an EOL sequence? */
scan_stat = 7;
break;
case '\n':
scan_stat = 8;
break;
case '=': /* first letter of an encoded chunk */
encoded_word = p1;
scan_stat = 1;
break;
case ' ': case '\t': /* a chunk of whitespaces */
spaces = p1;
scan_stat = 11;
break;
default: /* first letter of a non-encoded word */
err = _php_iconv_appendc(pretval, *p1, cd_pl);
if (err != PHP_ICONV_ERR_SUCCESS) {
if (mode & PHP_ICONV_MIME_DECODE_CONTINUE_ON_ERROR) {
err = PHP_ICONV_ERR_SUCCESS;
} else {
goto out;
}
}
encoded_word = NULL;
if ((mode & PHP_ICONV_MIME_DECODE_STRICT)) {
scan_stat = 12;
}
break;
}
break;
case 1: /* expecting a delimiter */
if (*p1 != '?') {
if (*p1 == '\r' || *p1 == '\n') {
--p1;
}
err = _php_iconv_appendl(pretval, encoded_word, (size_t)((p1 + 1) - encoded_word), cd_pl);
if (err != PHP_ICONV_ERR_SUCCESS) {
goto out;
}
encoded_word = NULL;
if ((mode & PHP_ICONV_MIME_DECODE_STRICT)) {
scan_stat = 12;
} else {
scan_stat = 0;
}
break;
}
csname = p1 + 1;
scan_stat = 2;
break;
case 2: /* expecting a charset name */
switch (*p1) {
case '?': /* normal delimiter: encoding scheme follows */
scan_stat = 3;
break;
case '*': /* new style delimiter: locale id follows */
scan_stat = 10;
break;
case '\r': case '\n': /* not an encoded-word */
--p1;
_php_iconv_appendc(pretval, '=', cd_pl);
_php_iconv_appendc(pretval, '?', cd_pl);
err = _php_iconv_appendl(pretval, csname, (size_t)((p1 + 1) - csname), cd_pl);
if (err != PHP_ICONV_ERR_SUCCESS) {
goto out;
}
csname = NULL;
if ((mode & PHP_ICONV_MIME_DECODE_STRICT)) {
scan_stat = 12;
}
else {
scan_stat = 0;
}
continue;
}
if (scan_stat != 2) {
char tmpbuf[80];
if (csname == NULL) {
err = PHP_ICONV_ERR_MALFORMED;
goto out;
}
csname_len = (size_t)(p1 - csname);
if (csname_len > sizeof(tmpbuf) - 1) {
if ((mode & PHP_ICONV_MIME_DECODE_CONTINUE_ON_ERROR)) {
err = _php_iconv_appendl(pretval, encoded_word, (size_t)((p1 + 1) - encoded_word), cd_pl);
if (err != PHP_ICONV_ERR_SUCCESS) {
goto out;
}
encoded_word = NULL;
if ((mode & PHP_ICONV_MIME_DECODE_STRICT)) {
scan_stat = 12;
} else {
scan_stat = 0;
}
break;
} else {
err = PHP_ICONV_ERR_MALFORMED;
goto out;
}
}
memcpy(tmpbuf, csname, csname_len);
tmpbuf[csname_len] = '\0';
if (cd != (iconv_t)(-1)) {
iconv_close(cd);
}
cd = iconv_open(enc, tmpbuf);
if (cd == (iconv_t)(-1)) {
if ((mode & PHP_ICONV_MIME_DECODE_CONTINUE_ON_ERROR)) {
/* Bad character set, but the user wants us to
* press on. In this case, we'll just insert the
* undecoded encoded word, since there isn't really
* a more sensible behaviour available; the only
* other options are to swallow the encoded word
* entirely or decode it with an arbitrarily chosen
* single byte encoding, both of which seem to have
* a higher WTF factor than leaving it undecoded.
*
* Given this approach, we need to skip ahead to
* the end of the encoded word. */
int qmarks = 2;
while (qmarks > 0 && str_left > 1) {
if (*(++p1) == '?') {
--qmarks;
}
--str_left;
}
/* Look ahead to check for the terminating = that
* should be there as well; if it's there, we'll
* also include that. If it's not, there isn't much
* we can do at this point. */
if (*(p1 + 1) == '=') {
++p1;
if (str_left > 1) {
--str_left;
}
}
err = _php_iconv_appendl(pretval, encoded_word, (size_t)((p1 + 1) - encoded_word), cd_pl);
if (err != PHP_ICONV_ERR_SUCCESS) {
goto out;
}
/* Let's go back and see if there are further
* encoded words or bare content, and hope they
* might actually have a valid character set. */
scan_stat = 12;
break;
} else {
if (errno == EINVAL) {
err = PHP_ICONV_ERR_WRONG_CHARSET;
} else {
err = PHP_ICONV_ERR_CONVERTER;
}
goto out;
}
}
}
break;
case 3: /* expecting a encoding scheme specifier */
switch (*p1) {
case 'b':
case 'B':
enc_scheme = PHP_ICONV_ENC_SCHEME_BASE64;
scan_stat = 4;
break;
case 'q':
case 'Q':
enc_scheme = PHP_ICONV_ENC_SCHEME_QPRINT;
scan_stat = 4;
break;
default:
if ((mode & PHP_ICONV_MIME_DECODE_CONTINUE_ON_ERROR)) {
err = _php_iconv_appendl(pretval, encoded_word, (size_t)((p1 + 1) - encoded_word), cd_pl);
if (err != PHP_ICONV_ERR_SUCCESS) {
goto out;
}
encoded_word = NULL;
if ((mode & PHP_ICONV_MIME_DECODE_STRICT)) {
scan_stat = 12;
} else {
scan_stat = 0;
}
break;
} else {
err = PHP_ICONV_ERR_MALFORMED;
goto out;
}
}
break;
case 4: /* expecting a delimiter */
if (*p1 != '?') {
if ((mode & PHP_ICONV_MIME_DECODE_CONTINUE_ON_ERROR)) {
/* pass the entire chunk through the converter */
err = _php_iconv_appendl(pretval, encoded_word, (size_t)((p1 + 1) - encoded_word), cd_pl);
if (err != PHP_ICONV_ERR_SUCCESS) {
goto out;
}
encoded_word = NULL;
if ((mode & PHP_ICONV_MIME_DECODE_STRICT)) {
scan_stat = 12;
} else {
scan_stat = 0;
}
break;
} else {
err = PHP_ICONV_ERR_MALFORMED;
goto out;
}
}
encoded_text = p1 + 1;
scan_stat = 5;
break;
case 5: /* expecting an encoded portion */
if (*p1 == '?') {
encoded_text_len = (size_t)(p1 - encoded_text);
scan_stat = 6;
}
break;
case 7: /* expecting a "\n" character */
if (*p1 == '\n') {
scan_stat = 8;
} else {
/* bare CR */
_php_iconv_appendc(pretval, '\r', cd_pl);
_php_iconv_appendc(pretval, *p1, cd_pl);
scan_stat = 0;
}
break;
case 8: /* checking whether the following line is part of a
folded header */
if (*p1 != ' ' && *p1 != '\t') {
--p1;
str_left = 1; /* quit_loop */
break;
}
if (encoded_word == NULL) {
_php_iconv_appendc(pretval, ' ', cd_pl);
}
spaces = NULL;
scan_stat = 11;
break;
case 6: /* expecting a End-Of-Chunk character "=" */
if (*p1 != '=') {
if ((mode & PHP_ICONV_MIME_DECODE_CONTINUE_ON_ERROR)) {
/* pass the entire chunk through the converter */
err = _php_iconv_appendl(pretval, encoded_word, (size_t)((p1 + 1) - encoded_word), cd_pl);
if (err != PHP_ICONV_ERR_SUCCESS) {
goto out;
}
encoded_word = NULL;
if ((mode & PHP_ICONV_MIME_DECODE_STRICT)) {
scan_stat = 12;
} else {
scan_stat = 0;
}
break;
} else {
err = PHP_ICONV_ERR_MALFORMED;
goto out;
}
}
scan_stat = 9;
if (str_left == 1) {
eos = 1;
} else {
break;
}
/* TODO might want to rearrange logic so this is more obvious */
ZEND_FALLTHROUGH;
case 9: /* choice point, seeing what to do next.*/
switch (*p1) {
default:
/* Handle non-RFC-compliant formats
*
* RFC2047 requires the character that comes right
* after an encoded word (chunk) to be a whitespace,
* while there are lots of broken implementations that
* generate such malformed headers that don't fulfill
* that requirement.
*/
if (!eos) {
if ((mode & PHP_ICONV_MIME_DECODE_STRICT)) {
/* pass the entire chunk through the converter */
err = _php_iconv_appendl(pretval, encoded_word, (size_t)((p1 + 1) - encoded_word), cd_pl);
if (err != PHP_ICONV_ERR_SUCCESS) {
goto out;
}
scan_stat = 12;
break;
}
}
ZEND_FALLTHROUGH;
case '\r': case '\n': case ' ': case '\t': {
zend_string *decoded_text;
switch (enc_scheme) {
case PHP_ICONV_ENC_SCHEME_BASE64:
decoded_text = php_base64_decode((unsigned char*)encoded_text, encoded_text_len);
break;
case PHP_ICONV_ENC_SCHEME_QPRINT:
decoded_text = php_quot_print_decode((unsigned char*)encoded_text, encoded_text_len, 1);
break;
default:
decoded_text = NULL;
break;
}
if (decoded_text == NULL) {
if ((mode & PHP_ICONV_MIME_DECODE_CONTINUE_ON_ERROR)) {
/* pass the entire chunk through the converter */
err = _php_iconv_appendl(pretval, encoded_word, (size_t)((p1 + 1) - encoded_word), cd_pl);
if (err != PHP_ICONV_ERR_SUCCESS) {
goto out;
}
encoded_word = NULL;
if ((mode & PHP_ICONV_MIME_DECODE_STRICT)) {
scan_stat = 12;
} else {
scan_stat = 0;
}
break;
} else {
err = PHP_ICONV_ERR_UNKNOWN;
goto out;
}
}
err = _php_iconv_appendl(pretval, ZSTR_VAL(decoded_text), ZSTR_LEN(decoded_text), cd);
if (err == PHP_ICONV_ERR_SUCCESS) {
err = _php_iconv_appendl(pretval, NULL, 0, cd);
}
zend_string_release_ex(decoded_text, 0);
if (err != PHP_ICONV_ERR_SUCCESS) {
if ((mode & PHP_ICONV_MIME_DECODE_CONTINUE_ON_ERROR)) {
/* pass the entire chunk through the converter */
err = _php_iconv_appendl(pretval, encoded_word, (size_t)(p1 - encoded_word), cd_pl);
encoded_word = NULL;
if (err != PHP_ICONV_ERR_SUCCESS) {
break;
}
} else {
goto out;
}
}
if (eos) { /* reached end-of-string. done. */
scan_stat = 0;
break;
}
switch (*p1) {
case '\r': /* part of an EOL sequence? */
scan_stat = 7;
break;
case '\n':
scan_stat = 8;
break;
case '=': /* first letter of an encoded chunk */
scan_stat = 1;
break;
case ' ': case '\t': /* medial whitespaces */
spaces = p1;
scan_stat = 11;
break;
default: /* first letter of a non-encoded word */
_php_iconv_appendc(pretval, *p1, cd_pl);
scan_stat = 12;
break;
}
} break;
}
break;
case 10: /* expects a language specifier. dismiss it for now */
if (*p1 == '?') {
scan_stat = 3;
}
break;
case 11: /* expecting a chunk of whitespaces */
switch (*p1) {
case '\r': /* part of an EOL sequence? */
scan_stat = 7;
break;
case '\n':
scan_stat = 8;
break;
case '=': /* first letter of an encoded chunk */
if (spaces != NULL && encoded_word == NULL) {
_php_iconv_appendl(pretval, spaces, (size_t)(p1 - spaces), cd_pl);
spaces = NULL;
}
encoded_word = p1;
scan_stat = 1;
break;
case ' ': case '\t':
break;
default: /* first letter of a non-encoded word */
if (spaces != NULL) {
_php_iconv_appendl(pretval, spaces, (size_t)(p1 - spaces), cd_pl);
spaces = NULL;
}
_php_iconv_appendc(pretval, *p1, cd_pl);
encoded_word = NULL;
if ((mode & PHP_ICONV_MIME_DECODE_STRICT)) {
scan_stat = 12;
} else {
scan_stat = 0;
}
break;
}
break;
case 12: /* expecting a non-encoded word */
switch (*p1) {
case '\r': /* part of an EOL sequence? */
scan_stat = 7;
break;
case '\n':
scan_stat = 8;
break;
case ' ': case '\t':
spaces = p1;
scan_stat = 11;
break;
case '=': /* first letter of an encoded chunk */
if (!(mode & PHP_ICONV_MIME_DECODE_STRICT)) {
encoded_word = p1;
scan_stat = 1;
break;
}
ZEND_FALLTHROUGH;
default:
_php_iconv_appendc(pretval, *p1, cd_pl);
break;
}
break;
}
}
switch (scan_stat) {
case 0: case 8: case 11: case 12:
break;
default:
if ((mode & PHP_ICONV_MIME_DECODE_CONTINUE_ON_ERROR)) {
if (scan_stat == 1) {
_php_iconv_appendc(pretval, '=', cd_pl);
}
err = PHP_ICONV_ERR_SUCCESS;
} else {
err = PHP_ICONV_ERR_MALFORMED;
goto out;
}
}
if (next_pos != NULL) {
*next_pos = p1;
}
smart_str_0(pretval);
out:
if (cd != (iconv_t)(-1)) {
iconv_close(cd);
}
if (cd_pl != (iconv_t)(-1)) {
iconv_close(cd_pl);
}
return err;
}
/* }}} */
/* {{{ php_iconv_show_error() */
static void _php_iconv_show_error(php_iconv_err_t err, const char *out_charset, const char *in_charset)
{
switch (err) {
case PHP_ICONV_ERR_SUCCESS:
break;
case PHP_ICONV_ERR_CONVERTER:
php_error_docref(NULL, E_WARNING, "Cannot open converter");
break;
case PHP_ICONV_ERR_WRONG_CHARSET:
php_error_docref(NULL, E_WARNING, "Wrong encoding, conversion from \"%s\" to \"%s\" is not allowed",
in_charset, out_charset);
break;
case PHP_ICONV_ERR_ILLEGAL_CHAR:
php_error_docref(NULL, E_NOTICE, "Detected an incomplete multibyte character in input string");
break;
case PHP_ICONV_ERR_ILLEGAL_SEQ:
php_error_docref(NULL, E_NOTICE, "Detected an illegal character in input string");
break;
case PHP_ICONV_ERR_TOO_BIG:
/* should not happen */
php_error_docref(NULL, E_WARNING, "Buffer length exceeded");
break;
case PHP_ICONV_ERR_MALFORMED:
php_error_docref(NULL, E_WARNING, "Malformed string");
break;
case PHP_ICONV_ERR_OUT_BY_BOUNDS:
zend_argument_value_error(3, "must be contained in argument #1 ($haystack)");
break;
default:
/* other error */
php_error_docref(NULL, E_NOTICE, "Unknown error (%d)", errno);
break;
}
}
/* }}} */
/* {{{ Returns the character count of str */
PHP_FUNCTION(iconv_strlen)
{
const char *charset = NULL;
size_t charset_len;
zend_string *str;
php_iconv_err_t err;
size_t retval;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "S|s!",
&str, &charset, &charset_len) == FAILURE) {
RETURN_THROWS();
}
if (charset == NULL) {
charset = get_internal_encoding();
} else if (charset_len >= ICONV_CSNMAXLEN) {
php_error_docref(NULL, E_WARNING, "Encoding parameter exceeds the maximum allowed length of %d characters", ICONV_CSNMAXLEN);
RETURN_FALSE;
}
err = _php_iconv_strlen(&retval, ZSTR_VAL(str), ZSTR_LEN(str), charset);
_php_iconv_show_error(err, GENERIC_SUPERSET_NAME, charset);
if (err == PHP_ICONV_ERR_SUCCESS) {
RETVAL_LONG(retval);
} else {
RETVAL_FALSE;
}
}
/* }}} */
/* {{{ Returns specified part of a string */
PHP_FUNCTION(iconv_substr)
{
const char *charset = NULL;
size_t charset_len;
zend_string *str;
zend_long offset, length = 0;
bool len_is_null = 1;
php_iconv_err_t err;
smart_str retval = {0};
if (zend_parse_parameters(ZEND_NUM_ARGS(), "Sl|l!s!",
&str, &offset, &length, &len_is_null,
&charset, &charset_len) == FAILURE) {
RETURN_THROWS();
}
if (charset == NULL) {
charset = get_internal_encoding();
} else if (charset_len >= ICONV_CSNMAXLEN) {
php_error_docref(NULL, E_WARNING, "Encoding parameter exceeds the maximum allowed length of %d characters", ICONV_CSNMAXLEN);
RETURN_FALSE;
}
if (len_is_null) {
length = ZSTR_LEN(str);
}
err = _php_iconv_substr(&retval, ZSTR_VAL(str), ZSTR_LEN(str), offset, length, charset);
_php_iconv_show_error(err, GENERIC_SUPERSET_NAME, charset);
if (err == PHP_ICONV_ERR_SUCCESS && retval.s != NULL) {
RETURN_STR(smart_str_extract(&retval));
}
smart_str_free(&retval);
RETURN_FALSE;
}
/* }}} */
/* {{{ Finds position of first occurrence of needle within part of haystack beginning with offset */
PHP_FUNCTION(iconv_strpos)
{
const char *charset = NULL;
size_t charset_len, haystk_len;
zend_string *haystk;
zend_string *ndl;
zend_long offset = 0;
php_iconv_err_t err;
size_t retval;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "SS|ls!",
&haystk, &ndl,
&offset, &charset, &charset_len) == FAILURE) {
RETURN_THROWS();
}
if (charset == NULL) {
charset = get_internal_encoding();
} else if (charset_len >= ICONV_CSNMAXLEN) {
php_error_docref(NULL, E_WARNING, "Encoding parameter exceeds the maximum allowed length of %d characters", ICONV_CSNMAXLEN);
RETURN_FALSE;
}
if (offset < 0) {
/* Convert negative offset (counted from the end of string) */
err = _php_iconv_strlen(&haystk_len, ZSTR_VAL(haystk), ZSTR_LEN(haystk), charset);
if (err != PHP_ICONV_ERR_SUCCESS) {
_php_iconv_show_error(err, GENERIC_SUPERSET_NAME, charset);
RETURN_FALSE;
}
offset += haystk_len;
if (offset < 0) { /* If offset before start */
zend_argument_value_error(3, "must be contained in argument #1 ($haystack)");
RETURN_THROWS();
}
}
if (ZSTR_LEN(ndl) < 1) {
// TODO: Support empty needles!
RETURN_FALSE;
}
err = _php_iconv_strpos(
&retval, ZSTR_VAL(haystk), ZSTR_LEN(haystk), ZSTR_VAL(ndl), ZSTR_LEN(ndl),
offset, charset, /* reverse */ false);
_php_iconv_show_error(err, GENERIC_SUPERSET_NAME, charset);
if (err == PHP_ICONV_ERR_SUCCESS && retval != (size_t)-1) {
RETVAL_LONG((zend_long)retval);
} else {
RETVAL_FALSE;
}
}
/* }}} */
/* {{{ Finds position of last occurrence of needle within part of haystack beginning with offset */
PHP_FUNCTION(iconv_strrpos)
{
const char *charset = NULL;
size_t charset_len;
zend_string *haystk;
zend_string *ndl;
php_iconv_err_t err;
size_t retval;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "SS|s!",
&haystk, &ndl,
&charset, &charset_len) == FAILURE) {
RETURN_THROWS();
}
if (ZSTR_LEN(ndl) < 1) {
RETURN_FALSE;
}
if (charset == NULL) {
charset = get_internal_encoding();
} else if (charset_len >= ICONV_CSNMAXLEN) {
php_error_docref(NULL, E_WARNING, "Encoding parameter exceeds the maximum allowed length of %d characters", ICONV_CSNMAXLEN);
RETURN_FALSE;
}
err = _php_iconv_strpos(
&retval, ZSTR_VAL(haystk), ZSTR_LEN(haystk), ZSTR_VAL(ndl), ZSTR_LEN(ndl),
/* offset */ 0, charset, /* reserve */ true);
_php_iconv_show_error(err, GENERIC_SUPERSET_NAME, charset);
if (err == PHP_ICONV_ERR_SUCCESS && retval != (size_t)-1) {
RETVAL_LONG((zend_long)retval);
} else {
RETVAL_FALSE;
}
}
/* }}} */
/* {{{ Composes a mime header field with field_name and field_value in a specified scheme */
PHP_FUNCTION(iconv_mime_encode)
{
zend_string *field_name = NULL;
zend_string *field_value = NULL;
zend_string *tmp_str = NULL;
zval *pref = NULL;
smart_str retval = {0};
php_iconv_err_t err;
const char *in_charset = get_internal_encoding();
const char *out_charset = in_charset;
zend_long line_len = 76;
const char *lfchars = "\r\n";
php_iconv_enc_scheme_t scheme_id = PHP_ICONV_ENC_SCHEME_BASE64;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "SS|a",
&field_name, &field_value,
&pref) == FAILURE) {
RETURN_THROWS();
}
if (pref != NULL) {
zval *pzval;
if ((pzval = zend_hash_find_deref(Z_ARRVAL_P(pref), ZSTR_KNOWN(ZEND_STR_SCHEME))) != NULL) {
if (Z_TYPE_P(pzval) == IS_STRING && Z_STRLEN_P(pzval) > 0) {
switch (Z_STRVAL_P(pzval)[0]) {
case 'B': case 'b':
scheme_id = PHP_ICONV_ENC_SCHEME_BASE64;
break;
case 'Q': case 'q':
scheme_id = PHP_ICONV_ENC_SCHEME_QPRINT;
break;
}
}
}
if ((pzval = zend_hash_str_find_deref(Z_ARRVAL_P(pref), "input-charset", sizeof("input-charset") - 1)) != NULL && Z_TYPE_P(pzval) == IS_STRING) {
if (Z_STRLEN_P(pzval) >= ICONV_CSNMAXLEN) {
php_error_docref(NULL, E_WARNING, "Encoding parameter exceeds the maximum allowed length of %d characters", ICONV_CSNMAXLEN);
RETURN_FALSE;
}
if (Z_STRLEN_P(pzval) > 0) {
in_charset = Z_STRVAL_P(pzval);
}
}
if ((pzval = zend_hash_str_find_deref(Z_ARRVAL_P(pref), "output-charset", sizeof("output-charset") - 1)) != NULL && Z_TYPE_P(pzval) == IS_STRING) {
if (Z_STRLEN_P(pzval) >= ICONV_CSNMAXLEN) {
php_error_docref(NULL, E_WARNING, "Encoding parameter exceeds the maximum allowed length of %d characters", ICONV_CSNMAXLEN);
RETURN_FALSE;
}
if (Z_STRLEN_P(pzval) > 0) {
out_charset = Z_STRVAL_P(pzval);
}
}
if ((pzval = zend_hash_str_find_deref(Z_ARRVAL_P(pref), "line-length", sizeof("line-length") - 1)) != NULL) {
line_len = zval_get_long(pzval);
}
if ((pzval = zend_hash_str_find_deref(Z_ARRVAL_P(pref), "line-break-chars", sizeof("line-break-chars") - 1)) != NULL) {
if (Z_TYPE_P(pzval) != IS_STRING) {
tmp_str = zval_try_get_string_func(pzval);
if (UNEXPECTED(!tmp_str)) {
return;
}
lfchars = ZSTR_VAL(tmp_str);
} else {
lfchars = Z_STRVAL_P(pzval);
}
}
}
err = _php_iconv_mime_encode(&retval, ZSTR_VAL(field_name), ZSTR_LEN(field_name),
ZSTR_VAL(field_value), ZSTR_LEN(field_value), line_len, lfchars, scheme_id,
out_charset, in_charset);
_php_iconv_show_error(err, out_charset, in_charset);
if (err == PHP_ICONV_ERR_SUCCESS) {
RETVAL_STR(smart_str_extract(&retval));
} else {
smart_str_free(&retval);
RETVAL_FALSE;
}
if (tmp_str) {
zend_string_release_ex(tmp_str, 0);
}
}
/* }}} */
/* {{{ Decodes a mime header field */
PHP_FUNCTION(iconv_mime_decode)
{
zend_string *encoded_str;
const char *charset = NULL;
size_t charset_len;
zend_long mode = 0;
smart_str retval = {0};
php_iconv_err_t err;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "S|ls!",
&encoded_str, &mode, &charset, &charset_len) == FAILURE) {
RETURN_THROWS();
}
if (charset == NULL) {
charset = get_internal_encoding();
} else if (charset_len >= ICONV_CSNMAXLEN) {
php_error_docref(NULL, E_WARNING, "Encoding parameter exceeds the maximum allowed length of %d characters", ICONV_CSNMAXLEN);
RETURN_FALSE;
}
err = _php_iconv_mime_decode(&retval, ZSTR_VAL(encoded_str), ZSTR_LEN(encoded_str), charset, NULL, (int)mode);
_php_iconv_show_error(err, charset, "???");
if (err == PHP_ICONV_ERR_SUCCESS) {
RETVAL_STR(smart_str_extract(&retval));
} else {
smart_str_free(&retval);
RETVAL_FALSE;
}
}
/* }}} */
/* {{{ Decodes multiple mime header fields */
PHP_FUNCTION(iconv_mime_decode_headers)
{
zend_string *encoded_str;
const char *charset = NULL;
size_t charset_len;
zend_long mode = 0;
char *enc_str_tmp;
size_t enc_str_len_tmp;
php_iconv_err_t err = PHP_ICONV_ERR_SUCCESS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "S|ls!",
&encoded_str, &mode, &charset, &charset_len) == FAILURE) {
RETURN_THROWS();
}
if (charset == NULL) {
charset = get_internal_encoding();
} else if (charset_len >= ICONV_CSNMAXLEN) {
php_error_docref(NULL, E_WARNING, "Encoding parameter exceeds the maximum allowed length of %d characters", ICONV_CSNMAXLEN);
RETURN_FALSE;
}
array_init(return_value);
enc_str_tmp = ZSTR_VAL(encoded_str);
enc_str_len_tmp = ZSTR_LEN(encoded_str);
while (enc_str_len_tmp > 0) {
smart_str decoded_header = {0};
char *header_name = NULL;
size_t header_name_len = 0;
char *header_value = NULL;
size_t header_value_len = 0;
char *p, *limit;
const char *next_pos;
if (PHP_ICONV_ERR_SUCCESS != (err = _php_iconv_mime_decode(&decoded_header, enc_str_tmp, enc_str_len_tmp, charset, &next_pos, (int)mode))) {
smart_str_free(&decoded_header);
break;
}
if (decoded_header.s == NULL) {
break;
}
limit = ZSTR_VAL(decoded_header.s) + ZSTR_LEN(decoded_header.s);
for (p = ZSTR_VAL(decoded_header.s); p < limit; p++) {
if (*p == ':') {
*p = '\0';
header_name = ZSTR_VAL(decoded_header.s);
header_name_len = p - ZSTR_VAL(decoded_header.s);
while (++p < limit) {
if (*p != ' ' && *p != '\t') {
break;
}
}
header_value = p;
header_value_len = limit - p;
break;
}
}
if (header_name != NULL) {
zval *elem;
if ((elem = zend_hash_str_find(Z_ARRVAL_P(return_value), header_name, header_name_len)) != NULL) {
if (Z_TYPE_P(elem) != IS_ARRAY) {
zval new_elem;
array_init(&new_elem);
Z_ADDREF_P(elem);
add_next_index_zval(&new_elem, elem);
elem = zend_hash_str_update(Z_ARRVAL_P(return_value), header_name, header_name_len, &new_elem);
}
add_next_index_stringl(elem, header_value, header_value_len);
} else {
add_assoc_stringl_ex(return_value, header_name, header_name_len, header_value, header_value_len);
}
}
enc_str_len_tmp -= next_pos - enc_str_tmp;
enc_str_tmp = (char *)next_pos;
smart_str_free(&decoded_header);
}
if (err != PHP_ICONV_ERR_SUCCESS) {
_php_iconv_show_error(err, charset, "???");
zend_array_destroy(Z_ARR_P(return_value));
RETVAL_FALSE;
}
}
/* }}} */
/* {{{ Returns str converted to the out_charset character set */
PHP_FUNCTION(iconv)
{
char *in_charset, *out_charset;
zend_string *in_buffer;
size_t in_charset_len = 0, out_charset_len = 0;
php_iconv_err_t err;
zend_string *out_buffer;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "ssS",
&in_charset, &in_charset_len, &out_charset, &out_charset_len, &in_buffer) == FAILURE) {
RETURN_THROWS();
}
if (in_charset_len >= ICONV_CSNMAXLEN || out_charset_len >= ICONV_CSNMAXLEN) {
php_error_docref(NULL, E_WARNING, "Encoding parameter exceeds the maximum allowed length of %d characters", ICONV_CSNMAXLEN);
RETURN_FALSE;
}
err = php_iconv_string(ZSTR_VAL(in_buffer), (size_t)ZSTR_LEN(in_buffer), &out_buffer, out_charset, in_charset);
_php_iconv_show_error(err, out_charset, in_charset);
if (err == PHP_ICONV_ERR_SUCCESS && out_buffer != NULL) {
RETVAL_NEW_STR(out_buffer);
} else {
if (out_buffer != NULL) {
zend_string_efree(out_buffer);
}
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Sets internal encoding and output encoding for ob_iconv_handler() */
PHP_FUNCTION(iconv_set_encoding)
{
zend_string *type;
zend_string *charset;
zend_result retval;
zend_string *name;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "SS", &type, &charset) == FAILURE) {
RETURN_THROWS();
}
if (ZSTR_LEN(charset) >= ICONV_CSNMAXLEN) {
php_error_docref(NULL, E_WARNING, "Encoding parameter exceeds the maximum allowed length of %d characters", ICONV_CSNMAXLEN);
RETURN_FALSE;
}
if(zend_string_equals_literal_ci(type, "input_encoding")) {
name = ZSTR_INIT_LITERAL("iconv.input_encoding", 0);
} else if(zend_string_equals_literal_ci(type, "output_encoding")) {
name = ZSTR_INIT_LITERAL("iconv.output_encoding", 0);
} else if(zend_string_equals_literal_ci(type, "internal_encoding")) {
name = ZSTR_INIT_LITERAL("iconv.internal_encoding", 0);
} else {
RETURN_FALSE;
}
retval = zend_alter_ini_entry(name, charset, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
zend_string_release_ex(name, 0);
RETURN_BOOL(retval == SUCCESS);
}
/* }}} */
/* {{{ Get internal encoding and output encoding for ob_iconv_handler() */
PHP_FUNCTION(iconv_get_encoding)
{
zend_string *type = NULL;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S", &type) == FAILURE) {
RETURN_THROWS();
}
if (!type || zend_string_equals_literal_ci(type, "all")) {
array_init(return_value);
add_assoc_string(return_value, "input_encoding", get_input_encoding());
add_assoc_string(return_value, "output_encoding", get_output_encoding());
add_assoc_string(return_value, "internal_encoding", get_internal_encoding());
} else if (zend_string_equals_literal_ci(type, "input_encoding")) {
RETVAL_STRING(get_input_encoding());
} else if (zend_string_equals_literal_ci(type, "output_encoding")) {
RETVAL_STRING(get_output_encoding());
} else if (zend_string_equals_literal_ci(type, "internal_encoding")) {
RETVAL_STRING(get_internal_encoding());
} else {
/* TODO Warning/ValueError? */
RETURN_FALSE;
}
}
/* }}} */
/* {{{ iconv stream filter */
typedef struct _php_iconv_stream_filter {
iconv_t cd;
int persistent;
char *to_charset;
size_t to_charset_len;
char *from_charset;
size_t from_charset_len;
char stub[128];
size_t stub_len;
} php_iconv_stream_filter;
/* }}} iconv stream filter */
/* {{{ php_iconv_stream_filter_dtor */
static void php_iconv_stream_filter_dtor(php_iconv_stream_filter *self)
{
iconv_close(self->cd);
pefree(self->to_charset, self->persistent);
pefree(self->from_charset, self->persistent);
}
/* }}} */
/* {{{ php_iconv_stream_filter_ctor() */
static php_iconv_err_t php_iconv_stream_filter_ctor(php_iconv_stream_filter *self,
const char *to_charset, size_t to_charset_len,
const char *from_charset, size_t from_charset_len, int persistent)
{
self->to_charset = pemalloc(to_charset_len + 1, persistent);
self->to_charset_len = to_charset_len;
self->from_charset = pemalloc(from_charset_len + 1, persistent);
self->from_charset_len = from_charset_len;
memcpy(self->to_charset, to_charset, to_charset_len);
self->to_charset[to_charset_len] = '\0';
memcpy(self->from_charset, from_charset, from_charset_len);
self->from_charset[from_charset_len] = '\0';
if ((iconv_t)-1 == (self->cd = iconv_open(self->to_charset, self->from_charset))) {
pefree(self->from_charset, persistent);
pefree(self->to_charset, persistent);
return PHP_ICONV_ERR_UNKNOWN;
}
self->persistent = persistent;
self->stub_len = 0;
return PHP_ICONV_ERR_SUCCESS;
}
/* }}} */
/* {{{ php_iconv_stream_filter_append_bucket */
static int php_iconv_stream_filter_append_bucket(
php_iconv_stream_filter *self,
php_stream *stream, php_stream_filter *filter,
php_stream_bucket_brigade *buckets_out,
const char *ps, size_t buf_len, size_t *consumed,
int persistent)
{
php_stream_bucket *new_bucket;
char *out_buf = NULL;
size_t out_buf_size;
char *pd, *pt;
size_t ocnt, prev_ocnt, icnt, tcnt;
size_t initial_out_buf_size;
if (ps == NULL) {
initial_out_buf_size = 64;
icnt = 1;
} else {
initial_out_buf_size = buf_len;
icnt = buf_len;
}
out_buf_size = ocnt = prev_ocnt = initial_out_buf_size;
out_buf = pemalloc(out_buf_size, persistent);
pd = out_buf;
if (self->stub_len > 0) {
pt = self->stub;
tcnt = self->stub_len;
while (tcnt > 0) {
if (iconv(self->cd, (ICONV_CONST char **)&pt, &tcnt, &pd, &ocnt) == (size_t)-1) {
switch (errno) {
case EILSEQ:
php_error_docref(NULL, E_WARNING, "iconv stream filter (\"%s\"=>\"%s\"): invalid multibyte sequence", self->from_charset, self->to_charset);
goto out_failure;
case EINVAL:
if (ps != NULL) {
if (icnt > 0) {
if (self->stub_len >= sizeof(self->stub)) {
php_error_docref(NULL, E_WARNING, "iconv stream filter (\"%s\"=>\"%s\"): insufficient buffer", self->from_charset, self->to_charset);
goto out_failure;
}
self->stub[self->stub_len++] = *(ps++);
icnt--;
pt = self->stub;
tcnt = self->stub_len;
} else {
tcnt = 0;
break;
}
} else {
php_error_docref(NULL, E_WARNING, "iconv stream filter (\"%s\"=>\"%s\"): invalid multibyte sequence", self->from_charset, self->to_charset);
goto out_failure;
}
break;
case E2BIG: {
char *new_out_buf;
size_t new_out_buf_size;
new_out_buf_size = out_buf_size << 1;
if (new_out_buf_size < out_buf_size) {
/* whoa! no bigger buckets are sold anywhere... */
if (NULL == (new_bucket = php_stream_bucket_new(stream, out_buf, (out_buf_size - ocnt), 1, persistent))) {
goto out_failure;
}
php_stream_bucket_append(buckets_out, new_bucket);
out_buf_size = ocnt = initial_out_buf_size;
out_buf = pemalloc(out_buf_size, persistent);
pd = out_buf;
} else {
new_out_buf = perealloc(out_buf, new_out_buf_size, persistent);
pd = new_out_buf + (pd - out_buf);
ocnt += (new_out_buf_size - out_buf_size);
out_buf = new_out_buf;
out_buf_size = new_out_buf_size;
}
} break;
default:
php_error_docref(NULL, E_WARNING, "iconv stream filter (\"%s\"=>\"%s\"): unknown error", self->from_charset, self->to_charset);
goto out_failure;
}
}
prev_ocnt = ocnt;
}
memmove(self->stub, pt, tcnt);
self->stub_len = tcnt;
}
while (icnt > 0) {
if ((ps == NULL ? iconv(self->cd, NULL, NULL, &pd, &ocnt):
iconv(self->cd, (ICONV_CONST char **)&ps, &icnt, &pd, &ocnt)) == (size_t)-1) {
switch (errno) {
case EILSEQ:
php_error_docref(NULL, E_WARNING, "iconv stream filter (\"%s\"=>\"%s\"): invalid multibyte sequence", self->from_charset, self->to_charset);
goto out_failure;
case EINVAL:
if (ps != NULL) {
if (icnt > sizeof(self->stub)) {
php_error_docref(NULL, E_WARNING, "iconv stream filter (\"%s\"=>\"%s\"): insufficient buffer", self->from_charset, self->to_charset);
goto out_failure;
}
memcpy(self->stub, ps, icnt);
self->stub_len = icnt;
ps += icnt;
icnt = 0;
} else {
php_error_docref(NULL, E_WARNING, "iconv stream filter (\"%s\"=>\"%s\"): unexpected octet values", self->from_charset, self->to_charset);
goto out_failure;
}
break;
case E2BIG: {
char *new_out_buf;
size_t new_out_buf_size;
new_out_buf_size = out_buf_size << 1;
if (new_out_buf_size < out_buf_size) {
/* whoa! no bigger buckets are sold anywhere... */
if (NULL == (new_bucket = php_stream_bucket_new(stream, out_buf, (out_buf_size - ocnt), 1, persistent))) {
goto out_failure;
}
php_stream_bucket_append(buckets_out, new_bucket);
out_buf_size = ocnt = initial_out_buf_size;
out_buf = pemalloc(out_buf_size, persistent);
pd = out_buf;
} else {
new_out_buf = perealloc(out_buf, new_out_buf_size, persistent);
pd = new_out_buf + (pd - out_buf);
ocnt += (new_out_buf_size - out_buf_size);
out_buf = new_out_buf;
out_buf_size = new_out_buf_size;
}
} break;
default:
php_error_docref(NULL, E_WARNING, "iconv stream filter (\"%s\"=>\"%s\"): unknown error", self->from_charset, self->to_charset);
goto out_failure;
}
} else {
if (ps == NULL) {
break;
}
}
prev_ocnt = ocnt;
}
if (out_buf_size > ocnt) {
if (NULL == (new_bucket = php_stream_bucket_new(stream, out_buf, (out_buf_size - ocnt), 1, persistent))) {
goto out_failure;
}
php_stream_bucket_append(buckets_out, new_bucket);
} else {
pefree(out_buf, persistent);
}
*consumed += buf_len - icnt;
return SUCCESS;
out_failure:
pefree(out_buf, persistent);
return FAILURE;
}
/* }}} php_iconv_stream_filter_append_bucket */
/* {{{ php_iconv_stream_filter_do_filter */
static php_stream_filter_status_t php_iconv_stream_filter_do_filter(
php_stream *stream, php_stream_filter *filter,
php_stream_bucket_brigade *buckets_in,
php_stream_bucket_brigade *buckets_out,
size_t *bytes_consumed, int flags)
{
php_stream_bucket *bucket = NULL;
size_t consumed = 0;
php_iconv_stream_filter *self = (php_iconv_stream_filter *)Z_PTR(filter->abstract);
while (buckets_in->head != NULL) {
bucket = buckets_in->head;
php_stream_bucket_unlink(bucket);
if (php_iconv_stream_filter_append_bucket(self, stream, filter,
buckets_out, bucket->buf, bucket->buflen, &consumed,
php_stream_is_persistent(stream)) != SUCCESS) {
php_stream_bucket_delref(bucket);
return PSFS_ERR_FATAL;
}
php_stream_bucket_delref(bucket);
}
if (flags != PSFS_FLAG_NORMAL) {
if (php_iconv_stream_filter_append_bucket(self, stream, filter,
buckets_out, NULL, 0, &consumed,
php_stream_is_persistent(stream)) != SUCCESS) {
return PSFS_ERR_FATAL;
}
}
if (bytes_consumed != NULL) {
*bytes_consumed = consumed;
}
return PSFS_PASS_ON;
}
/* }}} */
/* {{{ php_iconv_stream_filter_cleanup */
static void php_iconv_stream_filter_cleanup(php_stream_filter *filter)
{
php_iconv_stream_filter_dtor((php_iconv_stream_filter *)Z_PTR(filter->abstract));
pefree(Z_PTR(filter->abstract), ((php_iconv_stream_filter *)Z_PTR(filter->abstract))->persistent);
}
/* }}} */
static const php_stream_filter_ops php_iconv_stream_filter_ops = {
php_iconv_stream_filter_do_filter,
php_iconv_stream_filter_cleanup,
"convert.iconv.*"
};
/* {{{ php_iconv_stream_filter_create */
static php_stream_filter *php_iconv_stream_filter_factory_create(const char *name, zval *params, uint8_t persistent)
{
php_stream_filter *retval = NULL;
php_iconv_stream_filter *inst;
const char *from_charset = NULL, *to_charset = NULL;
size_t from_charset_len, to_charset_len;
if ((from_charset = strchr(name, '.')) == NULL) {
return NULL;
}
++from_charset;
if ((from_charset = strchr(from_charset, '.')) == NULL) {
return NULL;
}
++from_charset;
if ((to_charset = strpbrk(from_charset, "/.")) == NULL) {
return NULL;
}
from_charset_len = to_charset - from_charset;
++to_charset;
to_charset_len = strlen(to_charset);
if (from_charset_len >= ICONV_CSNMAXLEN || to_charset_len >= ICONV_CSNMAXLEN) {
return NULL;
}
inst = pemalloc(sizeof(php_iconv_stream_filter), persistent);
if (php_iconv_stream_filter_ctor(inst, to_charset, to_charset_len, from_charset, from_charset_len, persistent) != PHP_ICONV_ERR_SUCCESS) {
pefree(inst, persistent);
return NULL;
}
if (NULL == (retval = php_stream_filter_alloc(&php_iconv_stream_filter_ops, inst, persistent))) {
php_iconv_stream_filter_dtor(inst);
pefree(inst, persistent);
}
return retval;
}
/* }}} */
/* {{{ php_iconv_stream_register_factory */
static php_iconv_err_t php_iconv_stream_filter_register_factory(void)
{
static const php_stream_filter_factory filter_factory = {
php_iconv_stream_filter_factory_create
};
if (FAILURE == php_stream_filter_register_factory(
php_iconv_stream_filter_ops.label,
&filter_factory)) {
return PHP_ICONV_ERR_UNKNOWN;
}
return PHP_ICONV_ERR_SUCCESS;
}
/* }}} */
/* {{{ php_iconv_stream_unregister_factory */
static php_iconv_err_t php_iconv_stream_filter_unregister_factory(void)
{
if (FAILURE == php_stream_filter_unregister_factory(
php_iconv_stream_filter_ops.label)) {
return PHP_ICONV_ERR_UNKNOWN;
}
return PHP_ICONV_ERR_SUCCESS;
}
/* }}} */
/* }}} */
#endif