X-Git-Url: https://vcs.fsf.org/?a=blobdiff_plain;f=functions%2Furl_parser.php;h=20b1fdae39e54b761009d62e702588d4969daf8d;hb=fe55c7c794596d1febd00277d989bb09fe1dcc1f;hp=f70580cc519f97142771a9bd3fe92860dfc37546;hpb=612eda0a34f624b875bd2800a19e59bab83c2df3;p=squirrelmail.git diff --git a/functions/url_parser.php b/functions/url_parser.php index f70580cc..20b1fdae 100644 --- a/functions/url_parser.php +++ b/functions/url_parser.php @@ -1,82 +1,140 @@ $what", $oldaddr); - $body = str_replace ($oldaddr, "$newaddr", $body); - } - } else { - $body = eregi_replace ("([a-z]|[0-9]|_|\.|-)+\@([a-z]|[0-9]|_|-)+(\.([a-z]|[0-9]|_|-)+)*", "\\0", $body); - } - */ - $body = eregi_replace ("([a-z]|[0-9]|_|\.|-)+\@([a-z]|[0-9]|_|-)+(\.([a-z]|[0-9]|_|-)+)*", "\\0", $body); - return $body; - } - - function parseUrl ($body) { - #Possible ways a URL could finish. - - $poss_ends=array(" ", "\n", "\r", "<", ">", ".\r", ".\n", ". ", " ", ")", "(", - """, "<", ">", ".<"); - $done=False; - while (!$done) { - #Look for when a URL starts - $url_tokens = array( - "http://", - "https://", - "ftp://", - "telnet://"); - for($i = 0; $i < sizeof($url_tokens); $i++) { - if($where = strpos(strtolower($body), $url_tokens[$i], $start)) - break; - } - //$where = strpos(strtolower($body),"http://",$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 = $enda; - } - if (!$end) $end = strlen($body); - #Extract URL - $url = substr($body,$where,$end-$where); - #Replace URL with HyperLinked Url - if ($url != "") { - $url_str = "$url"; - # $body = str_replace($url,$url_str,$body); - echo "$where, $end
"; - $body = replaceBlock($body,$url_str,$where,$end); - $start = strpos($body,"",$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. + * + * $Id$ + */ + +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 . + ')?@' . $Host_RegExp_Match; + +function parseEmail (&$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"); + + +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) { + $url_str = "$url"; + 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); + } +} +?>