Coverage Report

Created: 2025-06-13 06:43

/src/php-src/ext/standard/uuencode.c
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Source (jump to first uncovered line)
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/*
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   +----------------------------------------------------------------------+
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   | Copyright (c) The PHP Group                                          |
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   +----------------------------------------------------------------------+
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   | This source file is subject to version 3.01 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 through the world-wide-web at the following url:           |
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   | https://www.php.net/license/3_01.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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   | Author: Ilia Alshanetsky <ilia@php.net>                              |
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   +----------------------------------------------------------------------+
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 */
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/*
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 * Portions of this code are based on Berkeley's uuencode/uudecode
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 * implementation.
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 *
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 * Copyright (c) 1983, 1993
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 *  The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *  This product includes software developed by the University of
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 *  California, Berkeley and its contributors.
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 * 4. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <math.h>
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#include "php.h"
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#include "php_uuencode.h"
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0
#define PHP_UU_ENC(c) ((c) ? ((c) & 077) + ' ' : '`')
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0
#define PHP_UU_ENC_C2(c) PHP_UU_ENC(((*(c) << 4) & 060) | ((*((c) + 1) >> 4) & 017))
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0
#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 zend_string *php_uuencode(const char *src, size_t src_len) /* {{{ */
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0
{
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0
  size_t len = 45;
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0
  unsigned char *p;
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0
  const unsigned char *s, *e, *ee;
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0
  zend_string *dest;
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  /* encoded length is ~ 38% greater than the original
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       Use 1.5 for easier calculation.
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    */
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0
  dest = zend_string_safe_alloc(src_len/2, 3, 46, 0);
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0
  p = (unsigned char *) ZSTR_VAL(dest);
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0
  s = (unsigned char *) src;
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0
  e = s + src_len;
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0
  while ((s + 3) < e) {
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0
    ee = s + len;
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0
    if (ee > e) {
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0
      ee = e;
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0
      len = ee - s;
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0
      if (len % 3) {
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0
        ee = s + (int) (floor((double)len / 3) * 3);
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0
      }
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0
    }
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0
    *p++ = PHP_UU_ENC(len);
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    while (s < ee) {
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0
      *p++ = PHP_UU_ENC(*s >> 2);
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0
      *p++ = PHP_UU_ENC_C2(s);
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0
      *p++ = PHP_UU_ENC_C3(s);
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      *p++ = PHP_UU_ENC(*(s + 2) & 077);
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      s += 3;
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0
    }
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0
    if (len == 45) {
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0
      *p++ = '\n';
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0
    }
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0
  }
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  if (s < e) {
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0
    if (len == 45) {
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0
      *p++ = PHP_UU_ENC(e - s);
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0
      len = 0;
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0
    }
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    *p++ = PHP_UU_ENC(*s >> 2);
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    *p++ = PHP_UU_ENC_C2(s);
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    *p++ = ((e - s) > 1) ? PHP_UU_ENC_C3(s) : PHP_UU_ENC('\0');
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0
    *p++ = ((e - s) > 2) ? PHP_UU_ENC(*(s + 2) & 077) : PHP_UU_ENC('\0');
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0
  }
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0
  if (len < 45) {
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0
    *p++ = '\n';
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0
  }
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  *p++ = PHP_UU_ENC('\0');
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  *p++ = '\n';
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  *p = '\0';
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  dest = zend_string_truncate(dest, (char *) p - ZSTR_VAL(dest), 0);
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0
  return dest;
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0
}
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/* }}} */
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PHPAPI zend_string *php_uudecode(const char *src, size_t src_len) /* {{{ */
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0
{
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0
  size_t len, total_len=0;
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  char *p;
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0
  const char *s, *e, *ee;
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0
  zend_string *dest;
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  if (src_len == 0) {
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0
    return NULL;
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0
  }
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0
  dest = zend_string_alloc((size_t) ceil(src_len * 0.75), 0);
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0
  p = ZSTR_VAL(dest);
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  s = src;
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  e = src + src_len;
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  while (s < e) {
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0
    if ((len = PHP_UU_DEC(*s++)) == 0) {
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0
      break;
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0
    }
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    /* sanity check */
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0
    if (len > src_len) {
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0
      goto err;
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0
    }
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0
    total_len += len;
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0
    ee = s + (len == 45 ? 60 : (int) floor(len * 1.33));
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    /* sanity check */
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0
    if (ee > e) {
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0
      goto err;
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0
    }
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0
    while (s < ee) {
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0
      if(s+4 > e) {
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0
        goto err;
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0
      }
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      *p++ = PHP_UU_DEC(*s) << 2 | PHP_UU_DEC(*(s + 1)) >> 4;
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      *p++ = PHP_UU_DEC(*(s + 1)) << 4 | PHP_UU_DEC(*(s + 2)) >> 2;
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      *p++ = PHP_UU_DEC(*(s + 2)) << 6 | PHP_UU_DEC(*(s + 3));
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0
      s += 4;
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0
    }
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0
    if (len < 45) {
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0
      break;
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0
    }
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    /* skip \n */
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0
    s++;
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0
  }
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0
  assert(p >= ZSTR_VAL(dest));
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0
  if ((len = total_len) > (size_t)(p - ZSTR_VAL(dest))) {
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0
    *p++ = PHP_UU_DEC(*s) << 2 | PHP_UU_DEC(*(s + 1)) >> 4;
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0
    if (len > 1) {
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0
      *p++ = PHP_UU_DEC(*(s + 1)) << 4 | PHP_UU_DEC(*(s + 2)) >> 2;
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0
      if (len > 2) {
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0
        *p++ = PHP_UU_DEC(*(s + 2)) << 6 | PHP_UU_DEC(*(s + 3));
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0
      }
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0
    }
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0
  }
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  ZSTR_LEN(dest) = total_len;
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0
  ZSTR_VAL(dest)[ZSTR_LEN(dest)] = '\0';
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  return dest;
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0
err:
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0
  zend_string_efree(dest);
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0
  return NULL;
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0
}
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/* }}} */
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/* {{{ uuencode a string */
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PHP_FUNCTION(convert_uuencode)
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0
{
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0
  zend_string *src;
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  ZEND_PARSE_PARAMETERS_START(1, 1)
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0
    Z_PARAM_STR(src)
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0
  ZEND_PARSE_PARAMETERS_END();
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  RETURN_STR(php_uuencode(ZSTR_VAL(src), ZSTR_LEN(src)));
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0
}
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/* }}} */
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/* {{{ decode a uuencoded string */
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PHP_FUNCTION(convert_uudecode)
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0
{
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0
  zend_string *src;
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0
  zend_string *dest;
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  ZEND_PARSE_PARAMETERS_START(1, 1)
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0
    Z_PARAM_STR(src)
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0
  ZEND_PARSE_PARAMETERS_END();
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0
  if ((dest = php_uudecode(ZSTR_VAL(src), ZSTR_LEN(src))) == NULL) {
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0
    php_error_docref(NULL, E_WARNING, "Argument #1 ($data) is not a valid uuencoded string");
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0
    RETURN_FALSE;
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0
  }
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0
  RETURN_STR(dest);
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0
}
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/* }}} */