| 1 | <?php |
| 2 | /* URL Passing code to allow links from with in emails */ |
| 3 | /* $Id$ */ |
| 4 | |
| 5 | $url_parser_php = true; |
| 6 | |
| 7 | function replaceBlock ($in, $replace, $start, $end) { |
| 8 | $begin = substr($in,0,$start); |
| 9 | $end = substr($in,$end,strlen($in)-$end); |
| 10 | $ret = $begin.$replace.$end; |
| 11 | return $ret; |
| 12 | } |
| 13 | |
| 14 | function parseEmail (&$body) { |
| 15 | global $color; |
| 16 | $Size = strlen($body); |
| 17 | |
| 18 | // Having this defined in just one spot could help when changes need |
| 19 | // to be made to the pattern |
| 20 | // Make sure that the expression is evaluated case insensitively |
| 21 | // |
| 22 | // Here's pretty sophisticated IP matching: |
| 23 | // $IPMatch = '(2[0-5][0-9]|1?[0-9]{1,2})'; |
| 24 | // $IPMatch = '\[?' . $IPMatch . '(\.' . $IPMatch . '){3}\]?'; |
| 25 | // |
| 26 | // Here's enough: |
| 27 | $IPMatch = '\[?[0-9]{1,3}(\.[0-9]{1,3}){3}\]?'; |
| 28 | $Host = '(' . $IPMatch . '|[0-9a-z]([-.]?[0-9a-z])*\.[a-wyz][a-z](g|l|m|pa|t|u|v)?)'; |
| 29 | $Expression = '[0-9a-z]([-_.]?[0-9a-z])*(%' . $Host . ')?@' . $Host; |
| 30 | |
| 31 | /* |
| 32 | This is here in case we ever decide to use highlighting of searched |
| 33 | text. this does it for email addresses |
| 34 | |
| 35 | if ($what && ($where == "BODY" || $where == "TEXT")) { |
| 36 | eregi ($Expression, $body, $regs); |
| 37 | $oldaddr = $regs[0]; |
| 38 | if ($oldaddr) { |
| 39 | $newaddr = eregi_replace ($what, "<b><font color=\"$color[2]\">$what</font></font></b>", $oldaddr); |
| 40 | $body = str_replace ($oldaddr, "<a href=\"../src/compose.php?send_to=$oldaddr\">$newaddr</a>", $body); |
| 41 | } |
| 42 | } else { |
| 43 | $body = eregi_replace ($Expression, "<a href=\"../src/compose.php?send_to=\\0\">\\0</a>", $body); |
| 44 | } |
| 45 | */ |
| 46 | |
| 47 | $body = eregi_replace ($Expression, "<a href=\"../src/compose.php?send_to=\\0\">\\0</a>", $body); |
| 48 | |
| 49 | // If there are any changes, it'll just get bigger. |
| 50 | if ($Size != strlen($body)) |
| 51 | return 1; |
| 52 | return 0; |
| 53 | } |
| 54 | |
| 55 | |
| 56 | function parseUrl (&$body) |
| 57 | { |
| 58 | $url_tokens = array( |
| 59 | 'http://', |
| 60 | 'https://', |
| 61 | 'ftp://', |
| 62 | 'telnet:', // Special case -- doesn't need the slashes |
| 63 | 'gopher://', |
| 64 | 'news://'); |
| 65 | |
| 66 | $poss_ends = array(' ', '\n', '\r', '<', '>', '.\r', '.\n', '. ', |
| 67 | ' ', ')', '(', '"', '<', '>', '.<', ']', '[', '{', |
| 68 | '}', '\240'); |
| 69 | |
| 70 | $start = 0; |
| 71 | $target_pos = strlen($body); |
| 72 | |
| 73 | while ($start != $target_pos) |
| 74 | { |
| 75 | $target_token = ''; |
| 76 | |
| 77 | // Find the first token to replace |
| 78 | foreach ($url_tokens as $the_token) |
| 79 | { |
| 80 | $pos = strpos(strtolower($body), $the_token, $start); |
| 81 | if (is_int($pos) && $pos < $target_pos) |
| 82 | { |
| 83 | $target_pos = $pos; |
| 84 | $target_token = $the_token; |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | // Look for email addresses between $start and $target_pos |
| 89 | $check_str = substr($body, $start, $target_pos); |
| 90 | |
| 91 | if (parseEmail($check_str)) |
| 92 | { |
| 93 | $body = replaceBlock($body, $check_str, $start, $target_pos); |
| 94 | $target_pos = strlen($check_str) + $start; |
| 95 | } |
| 96 | |
| 97 | // If there was a token to replace, replace it |
| 98 | if ($target_token != '') |
| 99 | { |
| 100 | // Find the end of the URL |
| 101 | $end=strlen($body); |
| 102 | foreach ($poss_ends as $key => $val) |
| 103 | { |
| 104 | $enda = strpos($body,$val,$target_pos); |
| 105 | if (is_int($enda) && $enda < $end) |
| 106 | $end = $enda; |
| 107 | } |
| 108 | |
| 109 | // Extract URL |
| 110 | $url = substr($body, $target_pos, $end-$target_pos); |
| 111 | |
| 112 | // Replace URL with HyperLinked Url, requires 1 char in link |
| 113 | if ($url != '' && $url != $target_token) |
| 114 | { |
| 115 | $url_str = "<a href=\"$url\" target=\"_blank\">$url</a>"; |
| 116 | $body = replaceBlock($body,$url_str,$target_pos,$end); |
| 117 | $target_pos += strlen($url_str); |
| 118 | } |
| 119 | else |
| 120 | { |
| 121 | // Not quite a valid link, skip ahead to next chance |
| 122 | $target_pos += strlen($target_token); |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | // Move forward |
| 127 | $start = $target_pos; |
| 128 | $target_pos = strlen($body); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | ?> |