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1 | <?php |
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2 | |
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3 | /** |
4 | * prefs.php |
5 | * |
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6 | * Copyright (c) 1999-2002 The SquirrelMail Project Team |
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7 | * Licensed under the GNU GPL. For full terms see the file COPYING. |
8 | * |
9 | * This contains functions for manipulating user preferences |
10 | * |
11 | * $Id$ |
12 | */ |
13 | |
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14 | global $prefs_are_cached, $prefs_cache; |
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15 | |
16 | if ( !session_is_registered('prefs_are_cached') || |
17 | !isset( $prefs_cache) || |
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18 | !is_array( $prefs_cache) || |
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19 | substr( phpversion(), 0, 3 ) == '4.1' ) { |
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20 | $prefs_are_cached = false; |
21 | $prefs_cache = array(); |
22 | } |
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23 | |
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24 | if (isset($prefs_dsn) && !empty($prefs_dsn)) { |
25 | require_once('../functions/db_prefs.php'); |
26 | } else { |
27 | require_once('../functions/file_prefs.php'); |
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28 | } |
29 | |
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30 | /* Hashing functions */ |
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31 | |
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32 | function getHashedFile($username, $dir, $datafile, $hash_search = true) { |
33 | global $dir_hash_level; |
34 | |
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35 | /* Remove trailing slash from $dir if found */ |
36 | if (substr($dir, -1) == '/') { |
37 | $dir = substr($dir, 0, strlen($dir) - 1); |
38 | } |
39 | |
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40 | /* Compute the hash for this user and extract the hash directories. */ |
41 | $hash_dirs = computeHashDirs($username); |
42 | |
43 | /* First, get and make sure the full hash directory exists. */ |
44 | $real_hash_dir = getHashedDir($username, $dir, $hash_dirs); |
45 | |
46 | /* Set the value of our real data file. */ |
47 | $result = "$real_hash_dir/$datafile"; |
48 | |
49 | /* Check for this file in the real hash directory. */ |
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50 | if ($hash_search && !@file_exists($result)) { |
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51 | /* First check the base directory, the most common location. */ |
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52 | if (@file_exists("$dir/$datafile")) { |
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53 | rename("$dir/$datafile", $result); |
54 | |
55 | /* Then check the full range of possible hash directories. */ |
56 | } else { |
57 | $check_hash_dir = $dir; |
58 | for ($h = 0; $h < 4; ++$h) { |
59 | $check_hash_dir .= '/' . $hash_dirs[$h]; |
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60 | if (@is_readable("$check_hash_dir/$datafile")) { |
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61 | rename("$check_hash_dir/$datafile", $result); |
62 | break; |
63 | } |
64 | } |
65 | } |
66 | } |
67 | |
68 | /* Return the full hashed datafile path. */ |
69 | return ($result); |
70 | } |
71 | |
72 | function getHashedDir($username, $dir, $hash_dirs = '') { |
73 | global $dir_hash_level; |
74 | |
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75 | /* Remove trailing slash from $dir if found */ |
76 | if (substr($dir, -1) == '/') { |
77 | $dir = substr($dir, 0, strlen($dir) - 1); |
78 | } |
79 | |
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80 | /* If necessary, populate the hash dir variable. */ |
81 | if ($hash_dirs == '') { |
82 | $hash_dirs = computeHashDirs($username); |
83 | } |
84 | |
85 | /* Make sure the full hash directory exists. */ |
86 | $real_hash_dir = $dir; |
87 | for ($h = 0; $h < $dir_hash_level; ++$h) { |
88 | $real_hash_dir .= '/' . $hash_dirs[$h]; |
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89 | if (!@is_dir($real_hash_dir)) { |
90 | if (!@mkdir($real_hash_dir, 0770)) { |
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91 | echo sprintf(_("Error creating directory %s."), $real_hash_dir) . '<br>' . |
92 | _("Could not create hashed directory structure!") . "<br>\n" . |
93 | _("Please contact your system administrator and report this error.") . "<br>\n"; |
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94 | exit; |
95 | } |
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96 | } |
97 | } |
98 | |
99 | /* And return that directory. */ |
100 | return ($real_hash_dir); |
101 | } |
102 | |
103 | function computeHashDirs($username) { |
104 | /* Compute the hash for this user and extract the hash directories. */ |
105 | $hash = base_convert(crc32($username), 10, 16); |
106 | $hash_dirs = array(); |
107 | for ($h = 0; $h < 4; ++ $h) { |
108 | $hash_dirs[] = substr($hash, $h, 1); |
109 | } |
110 | |
111 | /* Return our array of hash directories. */ |
112 | return ($hash_dirs); |
113 | } |
114 | |
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115 | ?> |