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php-src/ext/standard/quot_print.c
Peter Kokot 8d3f8ca12a Remove unused Git attributes ident 
The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.

In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.

This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.
2018-07-25 00:53:25 +02:00

289 lines
7.4 KiB
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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2018 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Kirill Maximov <kir@actimind.com> |
+----------------------------------------------------------------------+
*/
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include <errno.h>
#include "php.h"
#include "quot_print.h"
#include <stdio.h>
/*
* Converting HEX char to INT value
*/
static char php_hex2int(int c) /* {{{ */
{
if (isdigit(c)) {
return c - '0';
}
else if (c >= 'A' && c <= 'F') {
return c - 'A' + 10;
}
else if (c >= 'a' && c <= 'f') {
return c - 'a' + 10;
}
else {
return -1;
}
}
/* }}} */
PHPAPI zend_string *php_quot_print_decode(const unsigned char *str, size_t length, int replace_us_by_ws) /* {{{ */
{
register size_t i;
register unsigned const char *p1;
register unsigned char *p2;
register unsigned int h_nbl, l_nbl;
size_t decoded_len, buf_size;
zend_string *retval;
static unsigned int hexval_tbl[256] = {
64, 64, 64, 64, 64, 64, 64, 64, 64, 32, 16, 64, 64, 16, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
32, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 64, 64, 64, 64, 64, 64,
64, 10, 11, 12, 13, 14, 15, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 10, 11, 12, 13, 14, 15, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64,
64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64
};
if (replace_us_by_ws) {
replace_us_by_ws = '_';
}
i = length, p1 = str; buf_size = length;
while (i > 1 && *p1 != '\0') {
if (*p1 == '=') {
buf_size -= 2;
p1++;
i--;
}
p1++;
i--;
}
retval = zend_string_alloc(buf_size, 0);
i = length; p1 = str; p2 = (unsigned char*)ZSTR_VAL(retval);
decoded_len = 0;
while (i > 0 && *p1 != '\0') {
if (*p1 == '=') {
i--, p1++;
if (i == 0 || *p1 == '\0') {
break;
}
h_nbl = hexval_tbl[*p1];
if (h_nbl < 16) {
/* next char should be a hexadecimal digit */
if ((--i) == 0 || (l_nbl = hexval_tbl[*(++p1)]) >= 16) {
efree(retval);
return NULL;
}
*(p2++) = (h_nbl << 4) | l_nbl, decoded_len++;
i--, p1++;
} else if (h_nbl < 64) {
/* soft line break */
while (h_nbl == 32) {
if (--i == 0 || (h_nbl = hexval_tbl[*(++p1)]) == 64) {
efree(retval);
return NULL;
}
}
if (p1[0] == '\r' && i >= 2 && p1[1] == '\n') {
i--, p1++;
}
i--, p1++;
} else {
efree(retval);
return NULL;
}
} else {
*(p2++) = (replace_us_by_ws == *p1 ? '\x20': *p1);
i--, p1++, decoded_len++;
}
}
*p2 = '\0';
ZSTR_LEN(retval) = decoded_len;
return retval;
}
/* }}} */
#define PHP_QPRINT_MAXL 75
PHPAPI zend_string *php_quot_print_encode(const unsigned char *str, size_t length) /* {{{ */
{
zend_ulong lp = 0;
unsigned char c, *d;
char *hex = "0123456789ABCDEF";
zend_string *ret;
ret = zend_string_safe_alloc(3, (length + (((3 * length)/(PHP_QPRINT_MAXL-9)) + 1)), 0, 0);
d = (unsigned char*)ZSTR_VAL(ret);
while (length--) {
if (((c = *str++) == '\015') && (*str == '\012') && length > 0) {
*d++ = '\015';
*d++ = *str++;
length--;
lp = 0;
} else {
if (iscntrl (c) || (c == 0x7f) || (c & 0x80) || (c == '=') || ((c == ' ') && (*str == '\015'))) {
if ((((lp+= 3) > PHP_QPRINT_MAXL) && (c <= 0x7f))
|| ((c > 0x7f) && (c <= 0xdf) && ((lp + 3) > PHP_QPRINT_MAXL))
|| ((c > 0xdf) && (c <= 0xef) && ((lp + 6) > PHP_QPRINT_MAXL))
|| ((c > 0xef) && (c <= 0xf4) && ((lp + 9) > PHP_QPRINT_MAXL))) {
*d++ = '=';
*d++ = '\015';
*d++ = '\012';
lp = 3;
}
*d++ = '=';
*d++ = hex[c >> 4];
*d++ = hex[c & 0xf];
} else {
if ((++lp) > PHP_QPRINT_MAXL) {
*d++ = '=';
*d++ = '\015';
*d++ = '\012';
lp = 1;
}
*d++ = c;
}
}
}
*d = '\0';
ret = zend_string_truncate(ret, d - (unsigned char*)ZSTR_VAL(ret), 0);
return ret;
}
/* }}} */
/*
*
* Decoding Quoted-printable string.
*
*/
/* {{{ proto string quoted_printable_decode(string str)
Convert a quoted-printable string to an 8 bit string */
PHP_FUNCTION(quoted_printable_decode)
{
zend_string *arg1;
char *str_in;
zend_string *str_out;
size_t i = 0, j = 0, k;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_STR(arg1)
ZEND_PARSE_PARAMETERS_END();
if (ZSTR_LEN(arg1) == 0) {
/* shortcut */
RETURN_EMPTY_STRING();
}
str_in = ZSTR_VAL(arg1);
str_out = zend_string_alloc(ZSTR_LEN(arg1), 0);
while (str_in[i]) {
switch (str_in[i]) {
case '=':
if (str_in[i + 1] && str_in[i + 2] &&
isxdigit((int) str_in[i + 1]) &&
isxdigit((int) str_in[i + 2]))
{
ZSTR_VAL(str_out)[j++] = (php_hex2int((int) str_in[i + 1]) << 4)
+ php_hex2int((int) str_in[i + 2]);
i += 3;
} else /* check for soft line break according to RFC 2045*/ {
k = 1;
while (str_in[i + k] && ((str_in[i + k] == 32) || (str_in[i + k] == 9))) {
/* Possibly, skip spaces/tabs at the end of line */
k++;
}
if (!str_in[i + k]) {
/* End of line reached */
i += k;
}
else if ((str_in[i + k] == 13) && (str_in[i + k + 1] == 10)) {
/* CRLF */
i += k + 2;
}
else if ((str_in[i + k] == 13) || (str_in[i + k] == 10)) {
/* CR or LF */
i += k + 1;
}
else {
ZSTR_VAL(str_out)[j++] = str_in[i++];
}
}
break;
default:
ZSTR_VAL(str_out)[j++] = str_in[i++];
}
}
ZSTR_VAL(str_out)[j] = '\0';
ZSTR_LEN(str_out) = j;
RETVAL_NEW_STR(str_out);
}
/* }}} */
/* {{{ proto string quoted_printable_encode(string str) */
PHP_FUNCTION(quoted_printable_encode)
{
zend_string *str;
zend_string *new_str;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_STR(str)
ZEND_PARSE_PARAMETERS_END();
if (!ZSTR_LEN(str)) {
RETURN_EMPTY_STRING();
}
new_str = php_quot_print_encode((unsigned char *)ZSTR_VAL(str), ZSTR_LEN(str));
RETURN_STR(new_str);
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
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