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1 | <?php |
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2 | /* URL Passing code to allow links from with in emails */ |
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3 | /* $Id$ */ |
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4 | |
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5 | if (defined('url_parser_php')) |
6 | return; |
7 | define('url_parser_php', true); |
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8 | |
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9 | function replaceBlock (&$in, $replace, $start, $end) { |
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10 | $begin = substr($in,0,$start); |
11 | $end = substr($in,$end,strlen($in)-$end); |
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12 | $in = $begin.$replace.$end; |
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13 | } |
14 | |
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15 | // Having this defined in just one spot could help when changes need |
16 | // to be made to the pattern |
17 | // Make sure that the expression is evaluated case insensitively |
18 | // |
19 | // Here's pretty sophisticated IP matching: |
20 | // $IPMatch = '(2[0-5][0-9]|1?[0-9]{1,2})'; |
21 | // $IPMatch = '\[?' . $IPMatch . '(\.' . $IPMatch . '){3}\]?'; |
22 | // |
23 | // Here's enough: |
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24 | global $IP_RegExp_Match, $Host_RegExp_Match, $Email_RegExp_Match; |
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25 | $IP_RegExp_Match = '\\[?[0-9]{1,3}(\\.[0-9]{1,3}){3}\\]?'; |
26 | $Host_RegExp_Match = '(' . $IP_RegExp_Match . |
27 | '|[0-9a-z]([-.]?[0-9a-z])*\\.[a-z][a-z]+)'; |
28 | $Email_RegExp_Match = '[0-9a-z]([-_.]?[0-9a-z])*(%' . $Host_RegExp_Match . |
29 | ')?@' . $Host_RegExp_Match; |
30 | |
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31 | function parseEmail (&$body) { |
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32 | global $color, $Email_RegExp_Match; |
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33 | $Size = strlen($body); |
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34 | |
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35 | /* |
36 | This is here in case we ever decide to use highlighting of searched |
37 | text. this does it for email addresses |
38 | |
39 | if ($what && ($where == "BODY" || $where == "TEXT")) { |
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40 | eregi ($Email_RegExp_Match, $body, $regs); |
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41 | $oldaddr = $regs[0]; |
42 | if ($oldaddr) { |
43 | $newaddr = eregi_replace ($what, "<b><font color=\"$color[2]\">$what</font></font></b>", $oldaddr); |
44 | $body = str_replace ($oldaddr, "<a href=\"../src/compose.php?send_to=$oldaddr\">$newaddr</a>", $body); |
45 | } |
46 | } else { |
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47 | $body = eregi_replace ($Email_RegExp_Match, "<a href=\"../src/compose.php?send_to=\\0\">\\0</a>", $body); |
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48 | } |
49 | */ |
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50 | |
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51 | $body = eregi_replace ($Email_RegExp_Match, "<a href=\"../src/compose.php?send_to=\\0\">\\0</a>", $body); |
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52 | |
53 | // If there are any changes, it'll just get bigger. |
54 | if ($Size != strlen($body)) |
55 | return 1; |
56 | return 0; |
175e7218 |
57 | } |
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58 | |
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59 | |
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60 | // We don't want to re-initialize this stuff for every line. Save work |
61 | // and just do it once here. |
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62 | global $url_parser_url_tokens; |
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63 | $url_parser_url_tokens = array( |
64 | 'http://', |
65 | 'https://', |
66 | 'ftp://', |
67 | 'telnet:', // Special case -- doesn't need the slashes |
68 | 'gopher://', |
69 | 'news://'); |
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70 | |
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71 | global $url_parser_poss_ends; |
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72 | $url_parser_poss_ends = array(' ', "\n", "\r", '<', '>', ".\r", ".\n", |
73 | '. ', ' ', ')', '(', '"', '<', '>', '.<', |
74 | ']', '[', '{', '}', "\240"); |
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75 | |
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76 | |
77 | function parseUrl (&$body) |
78 | { |
79 | global $url_parser_poss_ends, $url_parser_url_tokens;; |
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80 | $start = 0; |
81 | $target_pos = strlen($body); |
82 | |
83 | while ($start != $target_pos) |
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84 | { |
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85 | $target_token = ''; |
86 | |
87 | // Find the first token to replace |
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88 | foreach ($url_parser_url_tokens as $the_token) |
8f7163e7 |
89 | { |
90 | $pos = strpos(strtolower($body), $the_token, $start); |
91 | if (is_int($pos) && $pos < $target_pos) |
92 | { |
93 | $target_pos = $pos; |
94 | $target_token = $the_token; |
95 | } |
96 | } |
97 | |
98 | // Look for email addresses between $start and $target_pos |
99 | $check_str = substr($body, $start, $target_pos); |
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100 | |
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101 | if (parseEmail($check_str)) |
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102 | { |
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103 | replaceBlock($body, $check_str, $start, $target_pos); |
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104 | $target_pos = strlen($check_str) + $start; |
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105 | } |
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106 | |
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107 | // If there was a token to replace, replace it |
108 | if ($target_token != '') |
109 | { |
110 | // Find the end of the URL |
111 | $end=strlen($body); |
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112 | foreach ($url_parser_poss_ends as $key => $val) |
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113 | { |
114 | $enda = strpos($body,$val,$target_pos); |
115 | if (is_int($enda) && $enda < $end) |
116 | $end = $enda; |
117 | } |
118 | |
119 | // Extract URL |
120 | $url = substr($body, $target_pos, $end-$target_pos); |
121 | |
122 | // Replace URL with HyperLinked Url, requires 1 char in link |
123 | if ($url != '' && $url != $target_token) |
124 | { |
125 | $url_str = "<a href=\"$url\" target=\"_blank\">$url</a>"; |
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126 | replaceBlock($body,$url_str,$target_pos,$end); |
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127 | $target_pos += strlen($url_str); |
128 | } |
129 | else |
130 | { |
131 | // Not quite a valid link, skip ahead to next chance |
132 | $target_pos += strlen($target_token); |
133 | } |
134 | } |
135 | |
136 | // Move forward |
137 | $start = $target_pos; |
138 | $target_pos = strlen($body); |
139 | } |
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140 | } |
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141 | |
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142 | ?> |