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Added uuencode() & uudecode() functions.
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Ilia Alshanetsky
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Oct 27, 2003
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/* | ||
+----------------------------------------------------------------------+ | ||
| PHP Version 4 | | ||
+----------------------------------------------------------------------+ | ||
| Copyright (c) 1997-2003 The PHP Group | | ||
+----------------------------------------------------------------------+ | ||
| This source file is subject to version 3.0 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_0.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: Ilia Alshanetsky <ilia@php.net> | | ||
+----------------------------------------------------------------------+ | ||
*/ | ||
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/* $Id$ */ | ||
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#ifndef PHP_UUENCODE_H | ||
#define PHP_UUENCODE_H | ||
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PHP_FUNCTION(uudecode); | ||
PHP_FUNCTION(uuencode); | ||
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PHPAPI int php_uudecode(char *src, int src_len, char **dest); | ||
PHPAPI int php_uuencode(char *src, int src_len, char **dest); | ||
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#endif /* PHP_UUENCODE_H */ | ||
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/* | ||
* Local variables: | ||
* tab-width: 4 | ||
* c-basic-offset: 4 | ||
* End: | ||
*/ |
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/* | ||
+----------------------------------------------------------------------+ | ||
| PHP Version 4 | | ||
+----------------------------------------------------------------------+ | ||
| Copyright (c) 1997-2003 The PHP Group | | ||
+----------------------------------------------------------------------+ | ||
| This source file is subject to version 3.0 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_0.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: Ilia Alshanetsky <ilia@php.net> | | ||
+----------------------------------------------------------------------+ | ||
*/ | ||
|
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/* $Id$ */ | ||
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/* | ||
* Portions of this code are based on Berkeley's uuencode/uudecode | ||
* implementation. | ||
* | ||
* Copyright (c) 1983, 1993 | ||
* The Regents of the University of California. All rights reserved. | ||
* | ||
* Redistribution and use in source and binary forms, with or without | ||
* modification, are permitted provided that the following conditions | ||
* are met: | ||
* 1. Redistributions of source code must retain the above copyright | ||
* notice, this list of conditions and the following disclaimer. | ||
* 2. Redistributions in binary form must reproduce the above copyright | ||
* notice, this list of conditions and the following disclaimer in the | ||
* documentation and/or other materials provided with the distribution. | ||
* 3. All advertising materials mentioning features or use of this software | ||
* must display the following acknowledgement: | ||
* This product includes software developed by the University of | ||
* California, Berkeley and its contributors. | ||
* 4. Neither the name of the University nor the names of its contributors | ||
* may be used to endorse or promote products derived from this software | ||
* without specific prior written permission. | ||
* | ||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
* SUCH DAMAGE. | ||
*/ | ||
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#include <math.h> | ||
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#include "php.h" | ||
#include "php_uuencode.h" | ||
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#define PHP_UU_ENC(c) ((c) ? ((c) & 077) + ' ' : '`') | ||
#define PHP_UU_ENC_C2(c) PHP_UU_ENC(((*(c) << 4) & 060) | ((*((c) + 1) >> 4) & 017)) | ||
#define PHP_UU_ENC_C3(c) PHP_UU_ENC(((*(c + 1) << 2) & 074) | ((*((c) + 2) >> 6) & 03)) | ||
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#define PHP_UU_DEC(c) (((c) - ' ') & 077) | ||
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PHPAPI int php_uuencode(char *src, int src_len, char **dest) | ||
{ | ||
int len = 45; | ||
char *p, *s, *e, *ee; | ||
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/* encoded length is ~ 38% greater then the original */ | ||
p = *dest = emalloc((ceil(src_len * 1.38) + 45 + 1)); | ||
s = src; | ||
e = src + src_len; | ||
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while ((s + 3) < e) { | ||
ee = s + len; | ||
if (ee > e) { | ||
ee = e; | ||
len = ee - s; | ||
if (len % 3) { | ||
ee = s + (int) (floor(len / 3) * 3); | ||
} | ||
} | ||
*p++ = PHP_UU_ENC(len); | ||
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while (s < ee) { | ||
*p++ = PHP_UU_ENC(*s >> 2); | ||
*p++ = PHP_UU_ENC_C2(s); | ||
*p++ = PHP_UU_ENC_C3(s); | ||
*p++ = PHP_UU_ENC(*(s + 2) & 077); | ||
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s += 3; | ||
} | ||
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if (len == 45) { | ||
*p++ = '\n'; | ||
} | ||
} | ||
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if (s < e) { | ||
if (len == 45) { | ||
*p++ = PHP_UU_ENC(e - s); | ||
len = 0; | ||
} | ||
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*p++ = PHP_UU_ENC(*s >> 2); | ||
*p++ = PHP_UU_ENC_C2(s); | ||
*p++ = ((e - s) > 1) ? PHP_UU_ENC_C3(s) : PHP_UU_ENC('\0'); | ||
*p++ = ((e - s) > 2) ? PHP_UU_ENC(*(s + 2) & 077) : PHP_UU_ENC('\0'); | ||
} | ||
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if (len < 45) { | ||
*p++ = '\n'; | ||
} | ||
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*p++ = PHP_UU_ENC('\0'); | ||
*p++ = '\n'; | ||
*p = '\0'; | ||
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return (p - *dest); | ||
} | ||
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PHPAPI int php_uudecode(char *src, int src_len, char **dest) | ||
{ | ||
int len, total_len=0; | ||
char *s, *e, *p, *ee; | ||
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p = *dest = emalloc(ceil(src_len * 0.75) + 1); | ||
s = src; | ||
e = src + src_len; | ||
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while (s < e) { | ||
if ((len = PHP_UU_DEC(*s++)) <= 0) { | ||
break; | ||
} | ||
total_len += len; | ||
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ee = s + (len == 45 ? 60 : (int) floor(len * 1.33)); | ||
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while (s < ee) { | ||
*p++ = PHP_UU_DEC(*s) << 2 | PHP_UU_DEC(*(s + 1)) >> 4; | ||
*p++ = PHP_UU_DEC(*(s + 1)) << 4 | PHP_UU_DEC(*(s + 2)) >> 2; | ||
*p++ = PHP_UU_DEC(*(s + 2)) << 6 | PHP_UU_DEC(*(s + 3)); | ||
s += 4; | ||
} | ||
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if (len < 45) { | ||
break; | ||
} | ||
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/* skip \n */ | ||
s++; | ||
} | ||
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if ((len = total_len > (p - *dest))) { | ||
*p++ = PHP_UU_DEC(*s) << 2 | PHP_UU_DEC(*(s + 1)) >> 4; | ||
if (len > 1) { | ||
*p++ = PHP_UU_DEC(*(s + 1)) << 4 | PHP_UU_DEC(*(s + 2)) >> 2; | ||
if (len > 2) { | ||
*p++ = PHP_UU_DEC(*(s + 2)) << 6 | PHP_UU_DEC(*(s + 3)); | ||
} | ||
} | ||
} | ||
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*(*dest + total_len) = '\0'; | ||
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return total_len; | ||
} | ||
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/* {{{ proto string uuencode(string data) | ||
uuencode a string */ | ||
PHP_FUNCTION(uuencode) | ||
{ | ||
char *src, *dst; | ||
int src_len, dst_len; | ||
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if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &src, &src_len) == FAILURE || src_len < 1) { | ||
RETURN_FALSE; | ||
} | ||
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dst_len = php_uuencode(src, src_len, &dst); | ||
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RETURN_STRINGL(dst, dst_len, 0); | ||
} | ||
/* }}} */ | ||
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/* {{{ proto string uudecode(string data) | ||
decode a uuencoded string */ | ||
PHP_FUNCTION(uudecode) | ||
{ | ||
char *src, *dst; | ||
int src_len, dst_len; | ||
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if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &src, &src_len) == FAILURE || src_len < 1) { | ||
RETURN_FALSE; | ||
} | ||
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dst_len = php_uudecode(src, src_len, &dst); | ||
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RETURN_STRINGL(dst, dst_len, 0); | ||
} | ||
/* }}} */ |