<?php
- /* URL Passing code to allow links from with in emails */
-
- $url_parser_php = true;
-
- function replaceBlock ($in, $replace, $start, $end) {
- $begin = substr($in,0,$start);
- $end = substr($in,$end,strlen($in)-$end);
- $ret = $begin.$replace.$end;
- return $ret;
- }
-
- function parseEmail ($body) {
- global $PHPSESSID;
- $body = eregi_replace ("([a-z]|[0-9]|_|\.|-)+\@([a-z]|[0-9]|_|-)+(\.([a-z]|[0-9]|_|-)+)*", "<a href=\"../src/compose.php?PHPSESSID=$PHPSESSID&send_to=\\0\">\\0</a>", $body);
- return $body;
- }
-
- function parseUrl ($body) {
- #Possible ways a URL could finish.
-
- $poss_ends=array(" ","\n","\r","<",". "," ");
- $done=False;
- while (!$done) {
- #Look for when a URL starts
- $where = strpos($body,"http:",$start);
- if ($where) {
- # Find the end of that URL
- reset($poss_ends); $end=0;
- while (list($key, $val) = each($poss_ends)) {
- $enda = strpos($body,$val,$where);
- if ($end == 0) $end = $enda;
- if ($enda < $end and $enda != 0) $end = $enda;
- }
- #Extract URL
- $url = substr($body,$where,$end-$where);
- #Replace URL with HyperLinked Url
- if ($url != "") {
- $url_str = "<a href=\"$url\" target=\"_blank\">$url</a>";
- # $body = str_replace($url,$url_str,$body);
- $body = replaceBlock($body,$url_str,$where,$end);
- $start = strpos($body,"</a>",$where);
- } else {
- $start = $where + 7;
- }
- } else {
- $done=true;
- }
- }
-
- return $body;
- }
-?>
+/**
+ * url_parser.php
+ *
+ * Copyright (c) 1999-2003 The SquirrelMail Project Team
+ * Licensed under the GNU GPL. For full terms see the file COPYING.
+ *
+ * This code provides various string manipulation functions that are
+ * used by the rest of the Squirrelmail code.
+ *
+ * $Id$
+ * @package squirrelmail
+ */
+
+/**
+ * Undocumented - complain, then patch.
+ */
+function replaceBlock (&$in, $replace, $start, $end) {
+ $begin = substr($in,0,$start);
+ $end = substr($in,$end,strlen($in)-$end);
+ $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 .
+ ')?@' . $Host_RegExp_Match;
+
+/**
+ * Parses a body and converts all found email addresses to clickable links.
+ *
+ * @param string body the body to process, by ref
+ * @return int the number of unique addresses found
+ */
+function parseEmail (&$body) {
+ global $color, $Email_RegExp_Match;
+ $sbody = $body;
+ $addresses = array();
+
+ /* Find all the email addresses in the body */
+ while(eregi($Email_RegExp_Match, $sbody, $regs)) {
+ $addresses[$regs[0]] = $regs[0];
+ $start = strpos($sbody, $regs[0]) + strlen($regs[0]);
+ $sbody = substr($sbody, $start);
+ }
+ /* Replace each email address with a compose URL */
+ foreach ($addresses as $email) {
+ $comp_uri = makeComposeLink('src/compose.php?send_to='.urlencode($email), $email);
+ $body = str_replace($email, $comp_uri, $body);
+ }
+ /* Return number of unique addresses found */
+ return count($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
+ 'gopher://',
+ 'news://');
+
+global $url_parser_poss_ends;
+$url_parser_poss_ends = array(' ', "\n", "\r", '<', '>', ".\r", ".\n",
+ '. ', ' ', ')', '(', '"', '<', '>', '.<',
+ ']', '[', '{', '}', "\240", ', ', '. ', ",\n", ",\r");
+
+
+/**
+ * Parses a body and converts all found URLs to clickable links.
+ *
+ * @param string body the body to process, by ref
+ * @return void
+ */
+function parseUrl (&$body) {
+ global $url_parser_poss_ends, $url_parser_url_tokens;;
+ $start = 0;
+ $blength = strlen($body);
+ while ($start != $blength) {
+ $target_token = '';
+ $target_pos = $blength;
+
+ /* Find the first token to replace */
+ foreach ($url_parser_url_tokens as $the_token) {
+ $pos = strpos(strtolower($body), $the_token, $start);
+ if (is_int($pos) && $pos < $blength) {
+ $target_pos = $pos;
+ $target_token = $the_token;
+ }
+ }
+
+ /* Look for email addresses between $start and $target_pos */
+ $check_str = substr($body, $start, $target_pos-$start);
+
+ if (parseEmail($check_str)) {
+ replaceBlock($body, $check_str, $start, $target_pos);
+ $blength = strlen($body);
+ $target_pos = strlen($check_str) + $start;
+ }
+
+ /* If there was a token to replace, replace it */
+ if ($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;
+ }
+ }
+
+ /* Extract URL */
+ $url = substr($body, $target_pos, $end-$target_pos);
+
+ /* Needed since lines are not passed with \n or \r */
+ while ( ereg("[,\.]$", $url) ) {
+ $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\">$url</a>";
+ replaceBlock($body,$url_str,$target_pos,$end);
+ $target_pos += strlen($url_str);
+ }
+ else {
+ // Not quite a valid link, skip ahead to next chance
+ $target_pos += strlen($target_token);
+ }
+ }
+
+ /* Move forward */
+ $start = $target_pos;
+ $blength = strlen($body);
+ }
+}
+?>
projects / squirrelmail.git / blobdiff