<?php
/**
* url_parser.php
*
* This code provides various string manipulation functions that are
* used by the rest of the SquirrelMail code.
*
* @copyright 1999-2020 The SquirrelMail Project Team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id: url_parser.php 14840 2020年01月07日 07:42:38Z pdontthink $
* @package squirrelmail
*/
/**
* Undocumented - complain, then patch.
*/
$begin =
substr ($in,0,$start); $in = $begin.$replace.$end;
}
/* Having this defined in just one spot could help when changes need
* to be made to the pattern
* Make sure that the expression is evaluated case insensitively
*
* Here's pretty sophisticated IP matching:
* $IPMatch = '(2[0-5][0-9]|1?[0-9]{1,2})';
* $IPMatch = '\[?' . $IPMatch . '(\.' . $IPMatch . '){3}\]?';
*/
/* Here's enough: */
global $IP_RegExp_Match, $Host_RegExp_Match, $Email_RegExp_Match;
$IP_RegExp_Match = '\\[?[0-9]{1,3}(\\.[0-9]{1,3}){3}\\]?';
$Host_RegExp_Match = '(' . $IP_RegExp_Match .
'|[0-9a-z]([-.]?[0-9a-z])*\\.[a-z][a-z]+)';
$Email_RegExp_Match = '[0-9a-z]([-_.+]?[0-9a-z])*(%' . $Host_RegExp_Match .
')?@' . $Host_RegExp_Match;
/**
* rfc 2368 (mailto URL) preg_match() regexp
* @link http://www.ietf.org/rfc/rfc2368.txt
* @global string MailTo_PReg_Match the encapsulated regexp for preg_match()
*/
global $MailTo_PReg_Match;
$Mailto_Email_RegExp = '[0-9a-z%]([-_.+%]?[0-9a-z])*(%' . $Host_RegExp_Match . ')?@' . $Host_RegExp_Match;
$MailTo_PReg_Match = '/((?:' . $Mailto_Email_RegExp . ')*)((?:\?(?:to|cc|bcc|subject|body)=[^\s\?&=,()]+)?(?:&(?:to|cc|bcc|subject|body)=[^\s\?&=,()]+)*)/i';
global $color, $Email_RegExp_Match, $compose_new_win;
$sbody = $body;
$addresses = array();
/* Find all the email addresses in the body */
while(preg_match ('/'.
$Email_RegExp_Match.
'/i', $sbody, $regs)) { $addresses[$regs[0]] = $regs[0];
$sbody =
substr ($sbody, $start); }
/* Replace each email address with a compose URL */
foreach ($addresses as $email) {
}
/* Return number of unique addresses found */
return count ($addresses); }
/* We don't want to re-initialize this stuff for every line. Save work
* and just do it once here.
*/
global $url_parser_url_tokens;
$url_parser_url_tokens = array(
'http://',
'https://',
'ftp://',
'telnet:', // Special case -- doesn't need the slashes
'mailto:', // Special case -- doesn't use the slashes
'gopher://',
'news://');
global $url_parser_poss_ends;
$url_parser_poss_ends = array(' ', "\n", "\r", '<', '>', ".\r", ".\n",
'. ', ' ', ')', '(', '"', '<', '>', '.<',
']', '[', '{', '}', "240円", ', ', '. ', ",\n", ",\r");
/**
* Parses a body and converts all found URLs to clickable links.
*
* @param string body the body to process, by ref
* @return void
*/
global $url_parser_poss_ends, $url_parser_url_tokens;
$start = 0;
while ($start < $blength) {
$target_token = '';
$target_pos = $blength;
/* Find the first token to replace */
foreach ($url_parser_url_tokens as $the_token) {
if (is_int ($pos) &&
$pos <
$target_pos) { $target_pos = $pos;
$target_token = $the_token;
}
}
/* Look for email addresses between $start and $target_pos */
$check_str =
substr ($body, $start, $target_pos-
$start);
$target_pos =
strlen ($check_str) +
$start; }
// rfc 2368 (mailto URL)
if ($target_token == 'mailto:') {
$target_pos += 7; //skip mailto:
$end = $blength;
$mailto =
substr ($body, $target_pos, $end-
$target_pos);
global $MailTo_PReg_Match;
if ((preg_match ($MailTo_PReg_Match, $mailto, $regs)) &&
($regs[0] !=
'')) { $mailto_before = $target_token . $regs[0];
/**
* '+' characters in a mailto URI don't need to be percent-encoded.
* However, when mailto URI data is transported via HTTP, '+' must
* be percent-encoded as %2B so that when the HTTP data is
* percent-decoded, you get '+' back and not a space.
*/
if ($regs[1]) { //if there is an email addr before '?', we need to merge it with the params
if (strpos ($mailto_params, 'to=') > -
1) //already a 'to=' $mailto_params =
str_replace ('to=', $to .
'%2C%20', $mailto_params); else {
if ($mailto_params) //already some params, append to them
$mailto_params .= '&' . $to;
else
$mailto_params .= '?' . $to;
}
}
$url_str =
preg_replace (array('/to=/i', '/(?<!b)cc=/i', '/bcc=/i'), array('send_to=', 'send_to_cc=', 'send_to_bcc='), $mailto_params); $comp_uri =
makeComposeLink ('src/compose.php' .
$url_str, $mailto_before); $target_pos +=
strlen ($comp_uri) -
7; }
}
else
/* If there was a token to replace, replace it */
if ($target_token != '') {
/* Find the end of the URL */
$end = $blength;
foreach ($url_parser_poss_ends as $val) {
$enda =
strpos ($body, $val, $target_pos); if (is_int ($enda) &&
$enda <
$end) { $end = $enda;
}
}
/* make sure that there are no 8bit chars between $target_pos and suspected end of URL */
$end = $first8bit;
}
/* Extract URL */
$url =
substr ($body, $target_pos, $end-
$target_pos);
/* Needed since lines are not passed with \n or \r */
$url =
substr ( $url, 0, -
1 ); $end--;
}
/* Replace URL with HyperLinked Url, requires 1 char in link */
if ($url != '' && $url != $target_token) {
$url_str = "<a href=\"$url\" target=\"_blank\">$url</a>";
$target_pos +=
strlen ($url_str); }
else {
// Not quite a valid link, skip ahead to next chance
$target_pos +=
strlen ($target_token); }
}
/* Move forward */
$start = $target_pos;
}
}
/**
* Finds first occurrence of 8bit data in the string
*
* Function finds first 8bit symbol or html entity that represents 8bit character.
* Search start is defined by $offset argument. Search ends at $maxlength position.
* If $maxlength is not defined or bigger than provided string, search ends when
* string ends.
*
* Check returned data type in order to avoid confusion between bool(false)
* (not found) and int(0) (first char in the string).
* @param string $haystack
* @param integer $offset
* @param integer $maxlength
* @return mixed integer with first 8bit character position or boolean false
* @since 1.5.2 and 1.4.7
*/
$ret = false;
if ($maxlength===
false ||
strlen ($haystack) <
$maxlength) { $maxlength=
strlen ($haystack); }
for($i=$offset;$i<$maxlength;$i++) {
/* rh7-8 compatibility. don't use full 8bit range in regexp */
if (preg_match ('/[200円-237円]|240円|[241円-377円]/',$haystack[$i])) { /* we have 8bit char. stop here and return position */
$ret = $i;
break;
} elseif ($haystack[$i]=='&') {
$substring =
substr ($haystack,$i); /**
* 1. look for "&#(decimal number);" where decimal_number is bigger than 127
* 2. look for "&x(hexadecimal number);", where hex number is bigger than x7f
* 3. look for any html character entity that is not 7bit html special char. Use
* own sq_get_html_translation_table() function with 'utf-8' character set in
* order to get all html entities.
*/
if ((preg_match ('/^&#(\d+);/',$substring,$match) &&
$match[1]>
127) ||
(preg_match ('/^&x([0-9a-f]+);/i',$substring,$match) &&
$match[1]>
"\x7f") ||
(preg_match ('/^&([a-z]+);/i',$substring,$match) &&
in_array ($match[0],sq_get_html_translation_table(HTML_ENTITIES,ENT_COMPAT,'utf-8')))) { $ret = $i;
break;
}
}
}
return $ret;
}