mirror of
https://github.com/php/php-src.git
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aa41ab285a
. Changed emalloc family functions to pemalloc ones for persistent filters. . Changed base64 and quoted-printable filter names to "convert.base64-encode", "convert.base64-decode", "convert.quoted-printable-encode", and "convert.quoted-printable-decode" respectively for the consistency that may be requested later.
1112 lines
29 KiB
C
1112 lines
29 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 4 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2003 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.02 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available at through the world-wide-web at |
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| http://www.php.net/license/2_02.txt. |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: |
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| Wez Furlong (wez@thebrainroom.com) |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#include "php.h"
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#include "php_globals.h"
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#include "ext/standard/basic_functions.h"
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#include "ext/standard/file.h"
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#include "ext/standard/php_string.h"
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/* {{{ common "no-opperation" methods */
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static int commonfilter_nop_flush(php_stream *stream, php_stream_filter *thisfilter, int closing TSRMLS_DC)
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{
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return php_stream_filter_flush_next(stream, thisfilter, closing);
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}
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static int commonfilter_nop_eof(php_stream *stream, php_stream_filter *thisfilter TSRMLS_DC)
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{
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return php_stream_filter_eof_next(stream, thisfilter);
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}
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/* }}} */
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/* {{{ rot13 stream filter implementation */
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static char rot13_from[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
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static char rot13_to[] = "nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM";
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static size_t strfilter_rot13_write(php_stream *stream, php_stream_filter *thisfilter,
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const char *buf, size_t count TSRMLS_DC)
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{
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char rotbuf[1024];
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size_t chunk;
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size_t wrote = 0;
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while (count > 0) {
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chunk = count;
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if (chunk > sizeof(rotbuf))
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chunk = sizeof(rotbuf);
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PHP_STRLCPY(rotbuf, buf, sizeof(rotbuf), chunk);
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buf += chunk;
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count -= chunk;
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php_strtr(rotbuf, chunk, rot13_from, rot13_to, 52);
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wrote += php_stream_filter_write_next(stream, thisfilter, rotbuf, chunk);
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}
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return wrote;
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}
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static size_t strfilter_rot13_read(php_stream *stream, php_stream_filter *thisfilter,
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char *buf, size_t count TSRMLS_DC)
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{
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size_t read;
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read = php_stream_filter_read_next(stream, thisfilter, buf, count);
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php_strtr(buf, read, rot13_from, rot13_to, 52);
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return read;
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}
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static php_stream_filter_ops strfilter_rot13_ops = {
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strfilter_rot13_write,
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strfilter_rot13_read,
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commonfilter_nop_flush,
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commonfilter_nop_eof,
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NULL,
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"string.rot13"
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};
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static php_stream_filter *strfilter_rot13_create(const char *filtername, const char *filterparams,
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int filterparamslen, int persistent TSRMLS_DC)
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{
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return php_stream_filter_alloc(&strfilter_rot13_ops, NULL, persistent);
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}
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static php_stream_filter_factory strfilter_rot13_factory = {
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strfilter_rot13_create
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};
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/* }}} */
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/* {{{ string.toupper / string.tolower stream filter implementation */
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static char lowercase[] = "abcdefghijklmnopqrstuvwxyz";
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static char uppercase[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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static size_t strfilter_toupper_write(php_stream *stream, php_stream_filter *thisfilter,
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const char *buf, size_t count TSRMLS_DC)
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{
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char tmpbuf[1024];
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size_t chunk;
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size_t wrote = 0;
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while (count > 0) {
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chunk = count;
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if (chunk > sizeof(tmpbuf))
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chunk = sizeof(tmpbuf);
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PHP_STRLCPY(tmpbuf, buf, sizeof(tmpbuf), chunk);
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buf += chunk;
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count -= chunk;
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php_strtr(tmpbuf, chunk, lowercase, uppercase, 26);
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wrote += php_stream_filter_write_next(stream, thisfilter, tmpbuf, chunk);
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}
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return wrote;
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}
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static size_t strfilter_tolower_write(php_stream *stream, php_stream_filter *thisfilter,
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const char *buf, size_t count TSRMLS_DC)
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{
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char tmpbuf[1024];
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size_t chunk;
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size_t wrote = 0;
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while (count > 0) {
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chunk = count;
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if (chunk > sizeof(tmpbuf))
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chunk = sizeof(tmpbuf);
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PHP_STRLCPY(tmpbuf, buf, sizeof(tmpbuf), chunk);
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buf += chunk;
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count -= chunk;
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php_strtr(tmpbuf, chunk, uppercase, lowercase, 26);
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wrote += php_stream_filter_write_next(stream, thisfilter, tmpbuf, chunk);
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}
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return wrote;
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}
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static size_t strfilter_toupper_read(php_stream *stream, php_stream_filter *thisfilter,
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char *buf, size_t count TSRMLS_DC)
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{
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size_t read;
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read = php_stream_filter_read_next(stream, thisfilter, buf, count);
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php_strtr(buf, read, lowercase, uppercase, 26);
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return read;
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}
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static size_t strfilter_tolower_read(php_stream *stream, php_stream_filter *thisfilter,
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char *buf, size_t count TSRMLS_DC)
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{
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size_t read;
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read = php_stream_filter_read_next(stream, thisfilter, buf, count);
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php_strtr(buf, read, uppercase, lowercase, 26);
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return read;
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}
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static php_stream_filter_ops strfilter_toupper_ops = {
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strfilter_toupper_write,
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strfilter_toupper_read,
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commonfilter_nop_flush,
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commonfilter_nop_eof,
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NULL,
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"string.toupper"
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};
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static php_stream_filter_ops strfilter_tolower_ops = {
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strfilter_tolower_write,
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strfilter_tolower_read,
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commonfilter_nop_flush,
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commonfilter_nop_eof,
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NULL,
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"string.tolower"
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};
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static php_stream_filter *strfilter_toupper_create(const char *filtername, const char *filterparams,
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int filterparamslen, int persistent TSRMLS_DC)
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{
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return php_stream_filter_alloc(&strfilter_toupper_ops, NULL, persistent);
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}
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static php_stream_filter *strfilter_tolower_create(const char *filtername, const char *filterparams,
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int filterparamslen, int persistent TSRMLS_DC)
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{
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return php_stream_filter_alloc(&strfilter_tolower_ops, NULL, persistent);
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}
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static php_stream_filter_factory strfilter_toupper_factory = {
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strfilter_toupper_create
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};
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static php_stream_filter_factory strfilter_tolower_factory = {
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strfilter_tolower_create
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};
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/* }}} */
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/* {{{ base64 / quoted_printable stream filter implementation */
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typedef enum _php_conv_err_t {
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PHP_CONV_ERR_SUCCESS = SUCCESS,
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PHP_CONV_ERR_UNKNOWN,
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PHP_CONV_ERR_TOO_BIG,
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PHP_CONV_ERR_INVALID_SEQ,
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PHP_CONV_ERR_UNEXPECTED_EOS
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} php_conv_err_t;
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typedef struct _php_conv php_conv;
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typedef php_conv_err_t (*php_conv_convert_func)(php_conv *, const char **, size_t *, char **, size_t *);
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typedef void (*php_conv_dtor_func)(php_conv *);
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struct _php_conv {
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php_conv_convert_func convert_op;
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php_conv_dtor_func dtor;
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};
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#define php_conv_convert(a, b, c, d, e) ((php_conv *)(a))->convert_op((php_conv *)(a), (b), (c), (d), (e))
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#define php_conv_dtor(a) ((php_conv *)a)->dtor((a))
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/* {{{ php_conv_base64_encode */
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typedef struct _php_conv_base64_encode {
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php_conv _super;
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unsigned char erem[3];
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size_t erem_len;
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} php_conv_base64_encode;
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static php_conv_err_t php_conv_base64_encode_convert(php_conv_base64_encode *inst, const char **in_p, size_t *in_left, char **out_p, size_t *out_left);
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static void php_conv_base64_encode_dtor(php_conv_base64_encode *inst);
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static unsigned char b64_tbl_enc[256] = {
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'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
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'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
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'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
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'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/',
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'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
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'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
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'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
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'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/',
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'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
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'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
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'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
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'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/',
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'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
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'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f',
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'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v',
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'w','x','y','z','0','1','2','3','4','5','6','7','8','9','+','/'
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};
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static php_conv_err_t php_conv_base64_encode_ctor(php_conv_base64_encode *inst)
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{
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inst->_super.convert_op = (php_conv_convert_func) php_conv_base64_encode_convert;
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inst->_super.dtor = (php_conv_dtor_func) php_conv_base64_encode_dtor;
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inst->erem_len = 0;
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return SUCCESS;
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}
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static void php_conv_base64_encode_dtor(php_conv_base64_encode *inst)
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{
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/* do nothing */
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}
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static php_conv_err_t php_conv_base64_encode_convert(php_conv_base64_encode *inst, const char **in_pp, size_t *in_left_p, char **out_pp, size_t *out_left_p)
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{
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register size_t ocnt, icnt;
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register unsigned char *ps, *pd;
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size_t nbytes_written;
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pd = (unsigned char *)(*out_pp);
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ocnt = *out_left_p;
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nbytes_written = 0;
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if (in_pp != NULL && in_left_p != NULL) {
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ps = (unsigned char *)(*in_pp);
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icnt = *in_left_p;
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/* consume the remainder first */
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switch (inst->erem_len) {
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case 1:
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if (icnt >= 2) {
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if (ocnt < 4) {
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return PHP_CONV_ERR_TOO_BIG;
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}
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*(pd++) = b64_tbl_enc[(inst->erem[0] >> 2)];
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*(pd++) = b64_tbl_enc[(unsigned char)(inst->erem[0] << 4) | (ps[0] >> 4)];
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*(pd++) = b64_tbl_enc[(unsigned char)(ps[0] << 2) | (ps[1] >> 6)];
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*(pd++) = b64_tbl_enc[ps[1]];
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ocnt -= 4;
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ps += 2;
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icnt -= 2;
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inst->erem_len = 0;
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}
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break;
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case 2:
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if (icnt >= 1) {
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if (ocnt < 4) {
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return PHP_CONV_ERR_TOO_BIG;
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}
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*(pd++) = b64_tbl_enc[(inst->erem[0] >> 2)];
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*(pd++) = b64_tbl_enc[(unsigned char)(inst->erem[0] << 4) | (inst->erem[1] >> 4)];
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*(pd++) = b64_tbl_enc[(unsigned char)(inst->erem[1] << 2) | (ps[0] >> 6)];
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*(pd++) = b64_tbl_enc[ps[0]];
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ocnt -= 4;
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ps += 1;
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icnt -= 1;
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inst->erem_len = 0;
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}
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break;
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}
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while (icnt >= 3) {
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if (ocnt < 4) {
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*in_pp = (const char *)ps;
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*in_left_p = icnt;
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*out_pp = (char *)pd;
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*out_left_p = ocnt;
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return PHP_CONV_ERR_TOO_BIG;
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}
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*(pd++) = b64_tbl_enc[ps[0] >> 2];
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*(pd++) = b64_tbl_enc[(unsigned char)(ps[0] << 4) | (ps[1] >> 4)];
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*(pd++) = b64_tbl_enc[(unsigned char)(ps[1] << 2) | (ps[2] >> 6)];
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*(pd++) = b64_tbl_enc[ps[2]];
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ps += 3;
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icnt -=3;
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ocnt -= 4;
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}
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for (;icnt > 0; icnt--) {
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inst->erem[inst->erem_len++] = *(ps++);
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}
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*in_pp = (const char *)ps;
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*in_left_p = icnt;
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*out_pp = (char *)pd;
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*out_left_p = ocnt;
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} else {
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switch (inst->erem_len) {
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case 0:
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/* do nothing */
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break;
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case 1:
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if (ocnt < 4) {
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return PHP_CONV_ERR_TOO_BIG;
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}
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*(pd++) = b64_tbl_enc[(inst->erem[0] >> 2)];
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*(pd++) = b64_tbl_enc[(unsigned char)(inst->erem[0] << 4)];
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*(pd++) = '=';
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*(pd++) = '=';
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inst->erem_len = 0;
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ocnt -= 4;
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break;
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case 2:
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if (ocnt < 4) {
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return PHP_CONV_ERR_TOO_BIG;
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}
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*(pd++) = b64_tbl_enc[(inst->erem[0] >> 2)];
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*(pd++) = b64_tbl_enc[(unsigned char)(inst->erem[0] << 4) | (inst->erem[1] >> 4)];
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*(pd++) = b64_tbl_enc[(unsigned char)(inst->erem[1] << 2)];
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*(pd++) = '=';
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inst->erem_len = 0;
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ocnt -=4;
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break;
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default:
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/* should not happen... */
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return PHP_CONV_ERR_UNKNOWN;
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}
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*out_pp = (char *)pd;
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*out_left_p = ocnt;
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}
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return PHP_CONV_ERR_SUCCESS;
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}
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/* }}} */
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/* {{{ php_conv_base64_decode */
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typedef struct _php_conv_base64_decode {
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php_conv _super;
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unsigned int urem;
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unsigned int urem_nbits;
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unsigned int ustat;
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int eos;
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} php_conv_base64_decode;
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static php_conv_err_t php_conv_base64_decode_convert(php_conv_base64_decode *inst, const char **in_p, size_t *in_left, char **out_p, size_t *out_left);
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static void php_conv_base64_decode_dtor(php_conv_base64_decode *inst);
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static unsigned int b64_tbl_dec[256] = {
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 62, 64, 64, 64, 63,
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52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 64, 64, 64,128, 64, 64,
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64, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
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15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 64, 64, 64, 64, 64,
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64, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
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41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
|
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
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64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64
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};
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|
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static int php_conv_base64_decode_ctor(php_conv_base64_decode *inst)
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{
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inst->_super.convert_op = (php_conv_convert_func) php_conv_base64_decode_convert;
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inst->_super.dtor = (php_conv_dtor_func) php_conv_base64_decode_dtor;
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|
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inst->urem = 0;
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inst->urem_nbits = 0;
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inst->ustat = 0;
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inst->eos = 0;
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return SUCCESS;
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}
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|
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static void php_conv_base64_decode_dtor(php_conv_base64_decode *inst)
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{
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/* do nothing */
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}
|
|
|
|
static php_conv_err_t php_conv_base64_decode_convert(php_conv_base64_decode *inst, const char **in_pp, size_t *in_left_p, char **out_pp, size_t *out_left_p)
|
|
{
|
|
php_conv_err_t err;
|
|
|
|
unsigned int urem, urem_nbits;
|
|
unsigned int pack, pack_bcnt;
|
|
unsigned char *ps, *pd;
|
|
size_t icnt, ocnt;
|
|
unsigned int ustat;
|
|
|
|
const static unsigned int nbitsof_pack = 8;
|
|
|
|
static unsigned int bmask[17] = {
|
|
0x0000, 0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f,
|
|
0x00ff, 0x01ff, 0x03ff, 0x07ff, 0x0fff, 0x1fff, 0x3fff, 0x7fff,
|
|
0xffff
|
|
};
|
|
|
|
if (in_pp == NULL || in_left_p == NULL) {
|
|
if (inst->eos || inst->urem_nbits == 0) {
|
|
return SUCCESS;
|
|
}
|
|
return PHP_CONV_ERR_UNEXPECTED_EOS;
|
|
}
|
|
|
|
err = PHP_CONV_ERR_SUCCESS;
|
|
|
|
ps = (unsigned char *)*in_pp;
|
|
pd = (unsigned char *)*out_pp;
|
|
icnt = *in_left_p;
|
|
ocnt = *out_left_p;
|
|
|
|
urem = inst->urem;
|
|
urem_nbits = inst->urem_nbits;
|
|
ustat = inst->ustat;
|
|
|
|
pack = 0;
|
|
pack_bcnt = nbitsof_pack;
|
|
|
|
for (;;) {
|
|
if (pack_bcnt >= urem_nbits) {
|
|
pack_bcnt -= urem_nbits;
|
|
pack |= (urem << pack_bcnt);
|
|
urem_nbits = 0;
|
|
} else {
|
|
urem_nbits -= pack_bcnt;
|
|
pack |= (urem >> urem_nbits);
|
|
urem &= bmask[urem_nbits];
|
|
pack_bcnt = 0;
|
|
}
|
|
if (pack_bcnt > 0) {
|
|
unsigned int i;
|
|
|
|
if (icnt < 1) {
|
|
break;
|
|
}
|
|
|
|
i = b64_tbl_dec[(unsigned int)*(ps++)];
|
|
icnt--;
|
|
ustat |= i & 0x80;
|
|
|
|
if (!(i & 0xc0)) {
|
|
if (ustat) {
|
|
err = PHP_CONV_ERR_INVALID_SEQ;
|
|
break;
|
|
}
|
|
if (6 <= pack_bcnt) {
|
|
pack_bcnt -= 6;
|
|
pack |= (i << pack_bcnt);
|
|
urem = 0;
|
|
} else {
|
|
urem_nbits = 6 - pack_bcnt;
|
|
pack |= (i >> urem_nbits);
|
|
urem = i & bmask[urem_nbits];
|
|
pack_bcnt = 0;
|
|
}
|
|
} else if (ustat) {
|
|
if (pack_bcnt == 8 || pack_bcnt == 2) {
|
|
err = PHP_CONV_ERR_INVALID_SEQ;
|
|
break;
|
|
}
|
|
inst->eos = 1;
|
|
}
|
|
}
|
|
if ((pack_bcnt | ustat) == 0) {
|
|
if (ocnt < 1) {
|
|
urem |= (pack << urem_nbits);
|
|
urem_nbits += 8;
|
|
|
|
err = PHP_CONV_ERR_TOO_BIG;
|
|
break;
|
|
}
|
|
*(pd++) = pack;
|
|
ocnt--;
|
|
pack = 0;
|
|
pack_bcnt = nbitsof_pack;
|
|
}
|
|
}
|
|
|
|
inst->urem = urem;
|
|
inst->urem_nbits = urem_nbits;
|
|
inst->ustat = ustat;
|
|
|
|
*in_pp = (const char *)ps;
|
|
*in_left_p = icnt;
|
|
*out_pp = (char *)pd;
|
|
*out_left_p = ocnt;
|
|
|
|
return err;
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ php_conv_qprint_encode */
|
|
typedef struct _php_conv_qprint_encode {
|
|
php_conv _super;
|
|
} php_conv_qprint_encode;
|
|
|
|
static void php_conv_qprint_encode_dtor(php_conv_qprint_encode *inst);
|
|
static php_conv_err_t php_conv_qprint_encode_convert(php_conv_qprint_encode *inst, const char **in_pp, size_t *in_left_p, char **out_pp, size_t *out_left_p);
|
|
|
|
static void php_conv_qprint_encode_dtor(php_conv_qprint_encode *inst)
|
|
{
|
|
/* do nothing */
|
|
}
|
|
|
|
static php_conv_err_t php_conv_qprint_encode_convert(php_conv_qprint_encode *inst, const char **in_pp, size_t *in_left_p, char **out_pp, size_t *out_left_p)
|
|
{
|
|
php_conv_err_t err = PHP_CONV_ERR_SUCCESS;
|
|
unsigned char *ps, *pd;
|
|
size_t icnt, ocnt;
|
|
unsigned int c;
|
|
static char qp_digits[] = "0123456789ABCDEF";
|
|
|
|
if (in_pp == NULL || in_left_p == NULL) {
|
|
return PHP_CONV_ERR_SUCCESS;
|
|
}
|
|
|
|
ps = (unsigned char *)(*in_pp);
|
|
icnt = *in_left_p;
|
|
pd = (unsigned char *)(*out_pp);
|
|
ocnt = *out_left_p;
|
|
|
|
for (; icnt > 0; icnt--, ps++) {
|
|
c = *ps;
|
|
|
|
if ((c >= 33 && c <= 60) || (c >= 62 && c <= 126)) {
|
|
if (ocnt < 1) {
|
|
err = PHP_CONV_ERR_TOO_BIG;
|
|
break;
|
|
}
|
|
*(pd++) = c;
|
|
ocnt--;
|
|
} else {
|
|
if (ocnt < 3) {
|
|
err = PHP_CONV_ERR_TOO_BIG;
|
|
break;
|
|
}
|
|
*(pd++) = '=';
|
|
*(pd++) = qp_digits[(c >> 4)];
|
|
*(pd++) = qp_digits[(c & 0x0f)];
|
|
ocnt -= 3;
|
|
}
|
|
}
|
|
|
|
*in_pp = (const char *)ps;
|
|
*in_left_p = icnt;
|
|
*out_pp = (char *)pd;
|
|
*out_left_p = ocnt;
|
|
|
|
return err;
|
|
}
|
|
|
|
static php_conv_err_t php_conv_qprint_encode_ctor(php_conv_qprint_encode *inst)
|
|
{
|
|
inst->_super.convert_op = (php_conv_convert_func) php_conv_qprint_encode_convert;
|
|
inst->_super.dtor = (php_conv_dtor_func) php_conv_qprint_encode_dtor;
|
|
return PHP_CONV_ERR_SUCCESS;
|
|
}
|
|
/* }}} */
|
|
|
|
/* {{{ php_conv_qprint_decode */
|
|
typedef struct _php_conv_qprint_decode {
|
|
php_conv _super;
|
|
|
|
int scan_stat;
|
|
unsigned int next_char;
|
|
} php_conv_qprint_decode;
|
|
|
|
static void php_conv_qprint_decode_dtor(php_conv_qprint_decode *inst)
|
|
{
|
|
/* do nothing */
|
|
}
|
|
|
|
static php_conv_err_t php_conv_qprint_decode_convert(php_conv_qprint_decode *inst, const char **in_pp, size_t *in_left_p, char **out_pp, size_t *out_left_p)
|
|
{
|
|
php_conv_err_t err = PHP_CONV_ERR_SUCCESS;
|
|
size_t icnt, ocnt;
|
|
unsigned char *ps, *pd;
|
|
unsigned int scan_stat;
|
|
unsigned int v;
|
|
|
|
if (in_pp == NULL || in_left_p == NULL) {
|
|
if (inst->scan_stat != 0) {
|
|
return PHP_CONV_ERR_UNEXPECTED_EOS;
|
|
}
|
|
return PHP_CONV_ERR_SUCCESS;
|
|
}
|
|
|
|
ps = (unsigned char *)(*in_pp);
|
|
icnt = *in_left_p;
|
|
pd = (unsigned char *)(*out_pp);
|
|
ocnt = *out_left_p;
|
|
scan_stat = inst->scan_stat;
|
|
|
|
v = 0;
|
|
|
|
for (;icnt > 0; icnt--) {
|
|
switch (scan_stat) {
|
|
case 0: {
|
|
if (*ps == '=') {
|
|
scan_stat = 1;
|
|
} else {
|
|
if (ocnt < 1) {
|
|
err = PHP_CONV_ERR_TOO_BIG;
|
|
goto out;
|
|
}
|
|
*(pd++) = *ps;
|
|
ocnt--;
|
|
}
|
|
} break;
|
|
|
|
case 1: case 2: {
|
|
unsigned int nbl = (*ps >= 'A' ? *ps - 0x37 : *ps - 0x30);
|
|
|
|
if (nbl > 15) {
|
|
return 0;
|
|
}
|
|
v = (v << 4) | nbl;
|
|
|
|
scan_stat++;
|
|
if (scan_stat == 3) {
|
|
if (ocnt < 1) {
|
|
inst->next_char = v;
|
|
err = PHP_CONV_ERR_TOO_BIG;
|
|
goto out;
|
|
}
|
|
*(pd++) = v;
|
|
ocnt--;
|
|
scan_stat = 0;
|
|
}
|
|
} break;
|
|
|
|
case 3: {
|
|
if (ocnt < 1) {
|
|
err = PHP_CONV_ERR_TOO_BIG;
|
|
goto out;
|
|
}
|
|
*(pd++) = inst->next_char;
|
|
ocnt--;
|
|
scan_stat = 0;
|
|
} break;
|
|
}
|
|
ps++;
|
|
}
|
|
out:
|
|
*in_pp = (const char *)ps;
|
|
*in_left_p = icnt;
|
|
*out_pp = (char *)pd;
|
|
*out_left_p = ocnt;
|
|
inst->scan_stat = scan_stat;
|
|
|
|
return err;
|
|
}
|
|
static php_conv_err_t php_conv_qprint_decode_ctor(php_conv_qprint_decode *inst)
|
|
{
|
|
inst->_super.convert_op = (php_conv_convert_func) php_conv_qprint_decode_convert;
|
|
inst->_super.dtor = (php_conv_dtor_func) php_conv_qprint_decode_dtor;
|
|
inst->scan_stat = 0;
|
|
inst->next_char = 0;
|
|
|
|
return PHP_CONV_ERR_SUCCESS;
|
|
}
|
|
/* }}} */
|
|
|
|
typedef struct _php_convert_filter {
|
|
php_conv *write_cd;
|
|
php_conv *read_cd;
|
|
int persistent;
|
|
char *filtername;
|
|
|
|
/* ring buffer for read operation */
|
|
char read_buf[4096];
|
|
size_t read_buf_left;
|
|
} php_convert_filter;
|
|
|
|
#define PHP_CONV_BASE64_ENCODE 1
|
|
#define PHP_CONV_BASE64_DECODE 2
|
|
#define PHP_CONV_QPRINT_ENCODE 3
|
|
#define PHP_CONV_QPRINT_DECODE 4
|
|
|
|
static php_conv *php_conv_open(int conv_mode, int persistent)
|
|
{
|
|
/* FIXME: I'll have to replace this ugly code by something neat
|
|
(factories?) in the near future. */
|
|
php_conv *retval = NULL;
|
|
|
|
switch (conv_mode) {
|
|
case PHP_CONV_BASE64_ENCODE:
|
|
retval = pemalloc(sizeof(php_conv_base64_encode), persistent);
|
|
if (php_conv_base64_encode_ctor((php_conv_base64_encode *)retval)) {
|
|
goto out_failure;
|
|
}
|
|
break;
|
|
|
|
case PHP_CONV_BASE64_DECODE:
|
|
retval = pemalloc(sizeof(php_conv_base64_decode), persistent);
|
|
if (php_conv_base64_decode_ctor((php_conv_base64_decode *)retval)) {
|
|
goto out_failure;
|
|
}
|
|
break;
|
|
|
|
case PHP_CONV_QPRINT_ENCODE:
|
|
retval = pemalloc(sizeof(php_conv_qprint_encode), persistent);
|
|
if (php_conv_qprint_encode_ctor((php_conv_qprint_encode *)retval)) {
|
|
goto out_failure;
|
|
}
|
|
break;
|
|
|
|
case PHP_CONV_QPRINT_DECODE:
|
|
retval = pemalloc(sizeof(php_conv_qprint_decode), persistent);
|
|
if (php_conv_qprint_decode_ctor((php_conv_qprint_decode *)retval)) {
|
|
goto out_failure;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
retval = NULL;
|
|
break;
|
|
}
|
|
return retval;
|
|
|
|
out_failure:
|
|
if (retval != NULL) {
|
|
pefree(retval, persistent);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static int php_convert_filter_ctor(php_convert_filter *inst, int write_conv_mode, int read_conv_mode, const char *filtername, int persistent)
|
|
{
|
|
php_conv *write_cd = NULL;
|
|
php_conv *read_cd = NULL;
|
|
|
|
inst->persistent = persistent;
|
|
|
|
inst->filtername = pestrdup(filtername, persistent);
|
|
|
|
if ((write_cd = php_conv_open(write_conv_mode, persistent)) == NULL) {
|
|
goto out_failure;
|
|
}
|
|
|
|
if ((read_cd = php_conv_open(read_conv_mode, persistent)) == NULL) {
|
|
goto out_failure;
|
|
}
|
|
|
|
inst->write_cd = write_cd;
|
|
inst->read_cd = read_cd;
|
|
|
|
inst->read_buf_left = 0;
|
|
|
|
return SUCCESS;
|
|
|
|
out_failure:
|
|
if (write_cd != NULL) {
|
|
php_conv_dtor(write_cd);
|
|
pefree(write_cd, persistent);
|
|
}
|
|
if (read_cd != NULL) {
|
|
php_conv_dtor(read_cd);
|
|
pefree(read_cd, persistent);
|
|
}
|
|
return FAILURE;
|
|
}
|
|
|
|
static void php_convert_filter_dtor(php_convert_filter *inst)
|
|
{
|
|
if (inst->write_cd != NULL) {
|
|
php_conv_dtor(inst->write_cd);
|
|
pefree(inst->write_cd, inst->persistent);
|
|
}
|
|
|
|
if (inst->read_cd != NULL) {
|
|
php_conv_dtor(inst->read_cd);
|
|
pefree(inst->read_cd, inst->persistent);
|
|
}
|
|
|
|
if (inst->filtername != NULL) {
|
|
pefree(inst->filtername, inst->persistent);
|
|
}
|
|
}
|
|
|
|
static size_t strfilter_convert_write(php_stream *stream, php_stream_filter *thisfilter,
|
|
const char *buf, size_t count TSRMLS_DC)
|
|
{
|
|
php_convert_filter *inst = (php_convert_filter *)thisfilter->abstract;
|
|
|
|
if (inst->write_cd != NULL) {
|
|
char bucket_buf[2048];
|
|
size_t out_left, in_left;
|
|
const char *in_p;
|
|
char *out_p;
|
|
|
|
in_p = buf;
|
|
in_left = count;
|
|
out_p = bucket_buf;
|
|
out_left = sizeof(bucket_buf);
|
|
|
|
while (in_left > 0) {
|
|
php_conv_err_t err;
|
|
|
|
err = php_conv_convert(inst->write_cd, &in_p, &in_left, &out_p, &out_left);
|
|
switch (err) {
|
|
case PHP_CONV_ERR_TOO_BIG:
|
|
php_stream_filter_write_next(stream, thisfilter, bucket_buf, sizeof(bucket_buf) - out_left);
|
|
out_p = bucket_buf;
|
|
out_left = sizeof(bucket_buf);
|
|
break;
|
|
|
|
case PHP_CONV_ERR_UNKNOWN:
|
|
php_error(E_WARNING, "stream filter(%s): unknown error", thisfilter->fops->label, err);
|
|
return 0;
|
|
|
|
case PHP_CONV_ERR_INVALID_SEQ:
|
|
php_error(E_WARNING, "stream filter(%s): invalid base64 sequence", thisfilter->fops->label, err);
|
|
return 0;
|
|
|
|
case PHP_CONV_ERR_UNEXPECTED_EOS:
|
|
php_error(E_WARNING, "stream filter(%s): unexpected end of stream", thisfilter->fops->label, err);
|
|
return 0;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
php_stream_filter_write_next(stream, thisfilter, bucket_buf, sizeof(bucket_buf) - out_left);
|
|
return (size_t)(count - in_left);
|
|
}
|
|
return php_stream_filter_write_next(stream, thisfilter, buf, count);
|
|
}
|
|
|
|
static size_t strfilter_convert_read(php_stream *stream, php_stream_filter *thisfilter,
|
|
char *buf, size_t count TSRMLS_DC)
|
|
{
|
|
php_convert_filter *inst = (php_convert_filter *)thisfilter->abstract;
|
|
size_t retval;
|
|
|
|
if (inst->read_cd != NULL) {
|
|
php_conv_err_t err = PHP_CONV_ERR_SUCCESS;
|
|
size_t out_left;
|
|
const char *in_p;
|
|
char *out_p;
|
|
|
|
in_p = inst->read_buf + (sizeof(inst->read_buf) - inst->read_buf_left);
|
|
out_p = buf;
|
|
out_left = count;
|
|
|
|
while (out_left > 0 && err != PHP_CONV_ERR_TOO_BIG) {
|
|
if (inst->read_buf_left == 0) {
|
|
inst->read_buf_left = php_stream_filter_read_next(stream, thisfilter, inst->read_buf, sizeof(inst->read_buf));
|
|
in_p = inst->read_buf;
|
|
}
|
|
if (inst->read_buf_left == 0) {
|
|
/* reached end of stream */
|
|
err = php_conv_convert(inst->read_cd, NULL, NULL, &out_p, &out_left);
|
|
if (err == PHP_CONV_ERR_SUCCESS) {
|
|
break;
|
|
}
|
|
} else {
|
|
err = php_conv_convert(inst->read_cd, &in_p, &(inst->read_buf_left), &out_p, &out_left);
|
|
}
|
|
|
|
switch (err) {
|
|
case PHP_CONV_ERR_UNKNOWN:
|
|
php_error(E_WARNING, "stream filter(%s): unknown error", thisfilter->fops->label, err);
|
|
return 0;
|
|
|
|
case PHP_CONV_ERR_INVALID_SEQ:
|
|
php_error(E_WARNING, "stream filter(%s): invalid base64 sequence", thisfilter->fops->label, err);
|
|
return 0;
|
|
|
|
case PHP_CONV_ERR_UNEXPECTED_EOS:
|
|
php_error(E_WARNING, "stream filter(%s): unexpected end of stream", thisfilter->fops->label, err);
|
|
return 0;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
retval = (size_t)(count - out_left);
|
|
} else {
|
|
retval = php_stream_filter_read_next(stream, thisfilter, buf, count);
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
static int strfilter_convert_flush(php_stream *stream, php_stream_filter *thisfilter, int closing TSRMLS_DC)
|
|
{
|
|
if (closing) {
|
|
php_convert_filter *inst = (php_convert_filter *)thisfilter->abstract;
|
|
|
|
if (inst->write_cd != NULL) {
|
|
php_conv_err_t err;
|
|
char bucket_buf[1024];
|
|
char *out_p;
|
|
size_t out_left;
|
|
|
|
out_p = bucket_buf;
|
|
out_left = sizeof(bucket_buf);
|
|
|
|
for (;;) {
|
|
err = php_conv_convert(inst->write_cd, NULL, NULL, &out_p, &out_left);
|
|
if (err == PHP_CONV_ERR_SUCCESS) {
|
|
break;
|
|
} else if (err == PHP_CONV_ERR_TOO_BIG) {
|
|
php_stream_filter_write_next(stream, thisfilter, bucket_buf, sizeof(bucket_buf) - out_left);
|
|
out_p = bucket_buf;
|
|
out_left = sizeof(bucket_buf);
|
|
} else {
|
|
php_error(E_WARNING, "stream filter(%s): unknown error", thisfilter->fops->label);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
php_stream_filter_write_next(stream, thisfilter, bucket_buf, sizeof(bucket_buf) - out_left);
|
|
}
|
|
}
|
|
return php_stream_filter_flush_next(stream, thisfilter, closing);
|
|
}
|
|
|
|
static int strfilter_convert_eof(php_stream *stream, php_stream_filter *thisfilter TSRMLS_DC)
|
|
{
|
|
return php_stream_filter_eof_next(stream, thisfilter);
|
|
}
|
|
|
|
static void strfilter_convert_dtor(php_stream_filter *thisfilter TSRMLS_DC)
|
|
{
|
|
assert(thisfilter->abstract != NULL);
|
|
|
|
php_convert_filter_dtor((php_convert_filter *)thisfilter->abstract);
|
|
pefree(thisfilter->abstract, ((php_convert_filter *)thisfilter->abstract)->persistent);
|
|
}
|
|
|
|
static php_stream_filter_ops strfilter_convert_ops = {
|
|
strfilter_convert_write,
|
|
strfilter_convert_read,
|
|
strfilter_convert_flush,
|
|
strfilter_convert_eof,
|
|
strfilter_convert_dtor,
|
|
"convert.*"
|
|
};
|
|
|
|
static php_stream_filter *strfilter_convert_create(const char *filtername, const char *filterparams,
|
|
int filterparamslen, int persistent TSRMLS_DC)
|
|
{
|
|
php_convert_filter *inst;
|
|
php_stream_filter *retval = NULL;
|
|
char *dot;
|
|
|
|
if ((dot = strchr(filtername, '.')) == NULL) {
|
|
return NULL;
|
|
}
|
|
++dot;
|
|
|
|
inst = pemalloc(sizeof(php_convert_filter), persistent);
|
|
assert(inst != NULL);
|
|
|
|
if (strcasecmp(dot, "base64-encode") == 0) {
|
|
if (php_convert_filter_ctor(inst,
|
|
PHP_CONV_BASE64_ENCODE, PHP_CONV_BASE64_DECODE,
|
|
filtername, persistent) != SUCCESS) {
|
|
pefree(inst, persistent);
|
|
return NULL;
|
|
}
|
|
retval = php_stream_filter_alloc(&strfilter_convert_ops, inst, persistent);
|
|
} else if (strcasecmp(dot, "base64-decode") == 0) {
|
|
if (php_convert_filter_ctor(inst,
|
|
PHP_CONV_BASE64_DECODE, PHP_CONV_BASE64_ENCODE,
|
|
filtername, persistent) != SUCCESS) {
|
|
pefree(inst, persistent);
|
|
return NULL;
|
|
}
|
|
retval = php_stream_filter_alloc(&strfilter_convert_ops, inst, persistent);
|
|
} else if (strcasecmp(dot, "quoted-printable-encode") == 0) {
|
|
if (php_convert_filter_ctor(inst,
|
|
PHP_CONV_QPRINT_ENCODE, PHP_CONV_QPRINT_DECODE,
|
|
filtername, persistent) != SUCCESS) {
|
|
pefree(inst, persistent);
|
|
return NULL;
|
|
}
|
|
retval = php_stream_filter_alloc(&strfilter_convert_ops, inst, persistent);
|
|
} else if (strcasecmp(dot, "quoted-printable-decode") == 0) {
|
|
if (php_convert_filter_ctor(inst,
|
|
PHP_CONV_QPRINT_DECODE, PHP_CONV_QPRINT_ENCODE,
|
|
filtername, persistent) != SUCCESS) {
|
|
pefree(inst, persistent);
|
|
return NULL;
|
|
}
|
|
retval = php_stream_filter_alloc(&strfilter_convert_ops, inst, persistent);
|
|
}
|
|
|
|
if (retval == NULL) {
|
|
pefree(inst, persistent);
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
static php_stream_filter_factory strfilter_convert_factory = {
|
|
strfilter_convert_create
|
|
};
|
|
/* }}} */
|
|
|
|
static const struct {
|
|
php_stream_filter_ops *ops;
|
|
php_stream_filter_factory *factory;
|
|
} standard_filters[] = {
|
|
{ &strfilter_rot13_ops, &strfilter_rot13_factory },
|
|
{ &strfilter_toupper_ops, &strfilter_toupper_factory },
|
|
{ &strfilter_tolower_ops, &strfilter_tolower_factory },
|
|
{ &strfilter_convert_ops, &strfilter_convert_factory },
|
|
/* additional filters to go here */
|
|
{ NULL, NULL }
|
|
};
|
|
|
|
/* {{{ filter MINIT and MSHUTDOWN */
|
|
PHP_MINIT_FUNCTION(standard_filters)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; standard_filters[i].ops; i++) {
|
|
if (FAILURE == php_stream_filter_register_factory(
|
|
standard_filters[i].ops->label,
|
|
standard_filters[i].factory
|
|
TSRMLS_CC)) {
|
|
return FAILURE;
|
|
}
|
|
}
|
|
return SUCCESS;
|
|
}
|
|
|
|
PHP_MSHUTDOWN_FUNCTION(standard_filters)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; standard_filters[i].ops; i++) {
|
|
php_stream_filter_unregister_factory(standard_filters[i].ops->label TSRMLS_CC);
|
|
}
|
|
return SUCCESS;
|
|
}
|
|
/* }}} */
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* End:
|
|
* vim600: sw=4 ts=4 fdm=marker
|
|
* vim<600: sw=4 ts=4
|
|
*/
|