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1 | <?php |
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2 | |
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3 | /** |
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4 | * strings.php |
5 | * |
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6 | * Copyright (c) 1999-2003 The SquirrelMail Project Team |
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7 | * Licensed under the GNU GPL. For full terms see the file COPYING. |
8 | * |
9 | * This code provides various string manipulation functions that are |
10 | * used by the rest of the Squirrelmail code. |
11 | * |
12 | * $Id$ |
13 | */ |
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14 | |
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15 | /** |
16 | * SquirrelMail version number -- DO NOT CHANGE |
17 | */ |
18 | global $version; |
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19 | $version = '1.5.0 [CVS]'; |
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20 | |
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21 | /** |
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22 | * SquirrelMail internal version number -- DO NOT CHANGE |
23 | * $sm_internal_version = array (release, major, minor) |
24 | */ |
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25 | global $SQM_INTERNAL_VERSION; |
87d8c725 |
26 | $SQM_INTERNAL_VERSION = array(1,5,0); |
27 | |
87d8c725 |
28 | /** |
29 | * There can be a circular issue with includes, where the $version string is |
30 | * referenced by the include of global.php, etc. before it's defined. |
31 | * For that reason, bring in global.php AFTER we define the version strings. |
32 | */ |
33 | require_once(SM_PATH . 'functions/global.php'); |
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34 | |
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35 | /** |
36 | * Wraps text at $wrap characters |
37 | * |
38 | * Has a problem with special HTML characters, so call this before |
39 | * you do character translation. |
40 | * |
41 | * Specifically, ' comes up as 5 characters instead of 1. |
42 | * This should not add newlines to the end of lines. |
43 | */ |
44 | function sqWordWrap(&$line, $wrap) { |
e842b215 |
45 | global $languages, $squirrelmail_language; |
46 | |
47 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
48 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) { |
49 | if (mb_detect_encoding($line) != 'ASCII') { |
50 | $line = $languages[$squirrelmail_language]['XTRA_CODE']('wordwrap', $line, $wrap); |
51 | return; |
52 | } |
53 | } |
54 | |
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55 | ereg("^([\t >]*)([^\t >].*)?$", $line, $regs); |
56 | $beginning_spaces = $regs[1]; |
57 | if (isset($regs[2])) { |
58 | $words = explode(' ', $regs[2]); |
59 | } else { |
60 | $words = ''; |
61 | } |
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62 | |
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63 | $i = 0; |
64 | $line = $beginning_spaces; |
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65 | |
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66 | while ($i < count($words)) { |
67 | /* Force one word to be on a line (minimum) */ |
68 | $line .= $words[$i]; |
69 | $line_len = strlen($beginning_spaces) + strlen($words[$i]) + 2; |
70 | if (isset($words[$i + 1])) |
71 | $line_len += strlen($words[$i + 1]); |
72 | $i ++; |
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73 | |
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74 | /* Add more words (as long as they fit) */ |
75 | while ($line_len < $wrap && $i < count($words)) { |
76 | $line .= ' ' . $words[$i]; |
77 | $i++; |
78 | if (isset($words[$i])) |
79 | $line_len += strlen($words[$i]) + 1; |
80 | else |
81 | $line_len += 1; |
82 | } |
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83 | |
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84 | /* Skip spaces if they are the first thing on a continued line */ |
85 | while (!isset($words[$i]) && $i < count($words)) { |
86 | $i ++; |
87 | } |
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88 | |
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89 | /* Go to the next line if we have more to process */ |
90 | if ($i < count($words)) { |
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91 | $line .= "\n"; |
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92 | } |
93 | } |
94 | } |
95 | |
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96 | /** |
97 | * Does the opposite of sqWordWrap() |
98 | */ |
99 | function sqUnWordWrap(&$body) { |
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100 | global $squirrelmail_language; |
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101 | |
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102 | if ($squirrelmail_language == 'ja_JP') { |
103 | return; |
104 | } |
105 | |
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106 | $lines = explode("\n", $body); |
107 | $body = ''; |
108 | $PreviousSpaces = ''; |
109 | $cnt = count($lines); |
110 | for ($i = 0; $i < $cnt; $i ++) { |
111 | preg_match("/^([\t >]*)([^\t >].*)?$/", $lines[$i], $regs); |
112 | $CurrentSpaces = $regs[1]; |
113 | if (isset($regs[2])) { |
114 | $CurrentRest = $regs[2]; |
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115 | } else { |
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116 | $CurrentRest = ''; |
117 | } |
118 | |
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119 | if ($i == 0) { |
120 | $PreviousSpaces = $CurrentSpaces; |
121 | $body = $lines[$i]; |
122 | } else if (($PreviousSpaces == $CurrentSpaces) /* Do the beginnings match */ |
123 | && (strlen($lines[$i - 1]) > 65) /* Over 65 characters long */ |
124 | && strlen($CurrentRest)) { /* and there's a line to continue with */ |
125 | $body .= ' ' . $CurrentRest; |
126 | } else { |
127 | $body .= "\n" . $lines[$i]; |
128 | $PreviousSpaces = $CurrentSpaces; |
129 | } |
130 | } |
131 | $body .= "\n"; |
132 | } |
133 | |
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134 | /** |
135 | * If $haystack is a full mailbox name and $needle is the mailbox |
136 | * separator character, returns the last part of the mailbox name. |
137 | */ |
138 | function readShortMailboxName($haystack, $needle) { |
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139 | |
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140 | if ($needle == '') { |
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141 | $elem = $haystack; |
142 | } else { |
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143 | $parts = explode($needle, $haystack); |
144 | $elem = array_pop($parts); |
145 | while ($elem == '' && count($parts)) { |
146 | $elem = array_pop($parts); |
147 | } |
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148 | } |
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149 | return( $elem ); |
66239b65 |
150 | } |
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151 | |
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152 | function php_self () { |
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153 | if ( sqgetGlobalVar('REQUEST_URI', $req_uri, SQ_SERVER) && !empty($req_uri) ) { |
154 | return $req_uri; |
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155 | } |
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156 | |
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157 | if ( sqgetGlobalVar('PHP_SELF', $php_self, SQ_SERVER) && !empty($php_self) ) { |
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158 | |
159 | // need to add query string to end of PHP_SELF to match REQUEST_URI |
160 | // |
161 | if ( sqgetGlobalVar('QUERY_STRING', $query_string, SQ_SERVER) && !empty($query_string) ) { |
162 | $php_self .= '?' . $query_string; |
163 | } |
164 | |
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165 | return $php_self; |
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166 | } |
167 | |
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168 | return ''; |
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169 | } |
170 | |
171 | |
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172 | /** |
173 | * This determines the location to forward to relative to your server. |
174 | * If this doesnt work correctly for you (although it should), you can |
175 | * remove all this code except the last two lines, and change the header() |
176 | * function to look something like this, customized to the location of |
177 | * SquirrelMail on your server: |
178 | * |
179 | * http://www.myhost.com/squirrelmail/src/login.php |
180 | */ |
181 | function get_location () { |
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182 | |
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183 | global $imap_server_type; |
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184 | |
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185 | /* Get the path, handle virtual directories */ |
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186 | if(strpos(php_self(), '?')) { |
187 | $path = substr(php_self(), 0, strpos(php_self(), '?')); |
188 | } else { |
189 | $path = php_self(); |
190 | } |
191 | $path = substr($path, 0, strrpos($path, '/')); |
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192 | if ( sqgetGlobalVar('sq_base_url', $full_url, SQ_SESSION) ) { |
193 | return $full_url . $path; |
194 | } |
195 | |
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196 | /* Check if this is a HTTPS or regular HTTP request. */ |
197 | $proto = 'http://'; |
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198 | |
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199 | /* |
200 | * If you have 'SSLOptions +StdEnvVars' in your apache config |
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201 | * OR if you have HTTPS=on in your HTTP_SERVER_VARS |
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202 | * OR if you are on port 443 |
203 | */ |
204 | $getEnvVar = getenv('HTTPS'); |
205 | if ((isset($getEnvVar) && !strcasecmp($getEnvVar, 'on')) || |
961ca3d8 |
206 | (sqgetGlobalVar('HTTPS', $https_on, SQ_SERVER) && !strcasecmp($https_on, 'on')) || |
207 | (sqgetGlobalVar('SERVER_PORT', $server_port, SQ_SERVER) && $server_port == 443)) { |
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208 | $proto = 'https://'; |
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209 | } |
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210 | |
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211 | /* Get the hostname from the Host header or server config. */ |
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212 | if ( !sqgetGlobalVar('HTTP_HOST', $host, SQ_SERVER) || empty($host) ) { |
213 | if ( !sqgetGlobalVar('SERVER_NAME', $host, SQ_SERVER) || empty($host) ) { |
214 | $host = ''; |
215 | } |
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216 | } |
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217 | |
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218 | $port = ''; |
219 | if (! strstr($host, ':')) { |
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220 | if (sqgetGlobalVar('SERVER_PORT', $server_port, SQ_SERVER)) { |
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221 | if (($server_port != 80 && $proto == 'http://') || |
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222 | ($server_port != 443 && $proto == 'https://')) { |
223 | $port = sprintf(':%d', $server_port); |
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224 | } |
225 | } |
226 | } |
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227 | |
8de7f698 |
228 | /* this is a workaround for the weird macosx caching that |
229 | causes Apache to return 16080 as the port number, which causes |
230 | SM to bail */ |
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231 | |
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232 | if ($imap_server_type == 'macosx' && $port == ':16080') { |
233 | $port = ''; |
234 | } |
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235 | |
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236 | /* Fallback is to omit the server name and use a relative */ |
237 | /* URI, although this is not RFC 2616 compliant. */ |
238 | $full_url = ($host ? $proto . $host . $port : ''); |
239 | sqsession_register($full_url, 'sq_base_url'); |
240 | return $full_url . $path; |
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241 | } |
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242 | |
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243 | |
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244 | /** |
245 | * These functions are used to encrypt the passowrd before it is |
246 | * stored in a cookie. |
247 | */ |
248 | function OneTimePadEncrypt ($string, $epad) { |
249 | $pad = base64_decode($epad); |
250 | $encrypted = ''; |
251 | for ($i = 0; $i < strlen ($string); $i++) { |
252 | $encrypted .= chr (ord($string[$i]) ^ ord($pad[$i])); |
253 | } |
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254 | |
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255 | return base64_encode($encrypted); |
256 | } |
257 | |
258 | function OneTimePadDecrypt ($string, $epad) { |
259 | $pad = base64_decode($epad); |
260 | $encrypted = base64_decode ($string); |
261 | $decrypted = ''; |
262 | for ($i = 0; $i < strlen ($encrypted); $i++) { |
263 | $decrypted .= chr (ord($encrypted[$i]) ^ ord($pad[$i])); |
264 | } |
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265 | |
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266 | return $decrypted; |
267 | } |
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268 | |
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269 | |
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270 | /** |
271 | * Randomize the mt_rand() function. Toss this in strings or integers |
272 | * and it will seed the generator appropriately. With strings, it is |
273 | * better to get them long. Use md5() to lengthen smaller strings. |
274 | */ |
275 | function sq_mt_seed($Val) { |
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276 | /* if mt_getrandmax() does not return a 2^n - 1 number, |
277 | this might not work well. This uses $Max as a bitmask. */ |
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278 | $Max = mt_getrandmax(); |
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279 | |
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280 | if (! is_int($Val)) { |
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281 | $Val = crc32($Val); |
66239b65 |
282 | } |
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283 | |
66239b65 |
284 | if ($Val < 0) { |
285 | $Val *= -1; |
286 | } |
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287 | |
66239b65 |
288 | if ($Val = 0) { |
289 | return; |
290 | } |
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291 | |
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292 | mt_srand(($Val ^ mt_rand(0, $Max)) & $Max); |
293 | } |
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294 | |
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295 | |
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296 | /** |
297 | * This function initializes the random number generator fairly well. |
298 | * It also only initializes it once, so you don't accidentally get |
299 | * the same 'random' numbers twice in one session. |
300 | */ |
301 | function sq_mt_randomize() { |
66239b65 |
302 | static $randomized; |
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303 | |
66239b65 |
304 | if ($randomized) { |
305 | return; |
306 | } |
f1ca21bd |
307 | |
66239b65 |
308 | /* Global. */ |
961ca3d8 |
309 | sqgetGlobalVar('REMOTE_PORT', $remote_port, SQ_SERVER); |
310 | sqgetGlobalVar('REMOTE_ADDR', $remote_addr, SQ_SERVER); |
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311 | sq_mt_seed((int)((double) microtime() * 1000000)); |
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312 | sq_mt_seed(md5($remote_port . $remote_addr . getmypid())); |
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313 | |
66239b65 |
314 | /* getrusage */ |
315 | if (function_exists('getrusage')) { |
4deb32f1 |
316 | /* Avoid warnings with Win32 */ |
66239b65 |
317 | $dat = @getrusage(); |
318 | if (isset($dat) && is_array($dat)) { |
821a8e9c |
319 | $Str = ''; |
320 | foreach ($dat as $k => $v) |
66239b65 |
321 | { |
322 | $Str .= $k . $v; |
323 | } |
821a8e9c |
324 | sq_mt_seed(md5($Str)); |
66239b65 |
325 | } |
326 | } |
f1ca21bd |
327 | |
961ca3d8 |
328 | if(sqgetGlobalVar('UNIQUE_ID', $unique_id, SQ_SERVER)) { |
329 | sq_mt_seed(md5($unique_id)); |
0b97a708 |
330 | } |
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331 | |
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332 | $randomized = 1; |
333 | } |
334 | |
335 | function OneTimePadCreate ($length=100) { |
336 | sq_mt_randomize(); |
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337 | |
66239b65 |
338 | $pad = ''; |
339 | for ($i = 0; $i < $length; $i++) { |
340 | $pad .= chr(mt_rand(0,255)); |
341 | } |
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342 | |
66239b65 |
343 | return base64_encode($pad); |
344 | } |
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345 | |
66239b65 |
346 | /** |
347 | * Returns a string showing the size of the message/attachment. |
348 | */ |
349 | function show_readable_size($bytes) { |
350 | $bytes /= 1024; |
351 | $type = 'k'; |
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352 | |
66239b65 |
353 | if ($bytes / 1024 > 1) { |
354 | $bytes /= 1024; |
e5f1e71c |
355 | $type = 'M'; |
66239b65 |
356 | } |
f1ca21bd |
357 | |
66239b65 |
358 | if ($bytes < 10) { |
359 | $bytes *= 10; |
360 | settype($bytes, 'integer'); |
361 | $bytes /= 10; |
362 | } else { |
363 | settype($bytes, 'integer'); |
364 | } |
f1ca21bd |
365 | |
66239b65 |
366 | return $bytes . '<small> ' . $type . '</small>'; |
367 | } |
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368 | |
66239b65 |
369 | /** |
370 | * Generates a random string from the caracter set you pass in |
371 | * |
372 | * Flags: |
373 | * 1 = add lowercase a-z to $chars |
374 | * 2 = add uppercase A-Z to $chars |
375 | * 4 = add numbers 0-9 to $chars |
376 | */ |
9374671f |
377 | |
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378 | function GenerateRandomString($size, $chars, $flags = 0) { |
379 | if ($flags & 0x1) { |
380 | $chars .= 'abcdefghijklmnopqrstuvwxyz'; |
381 | } |
382 | if ($flags & 0x2) { |
383 | $chars .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; |
384 | } |
385 | if ($flags & 0x4) { |
386 | $chars .= '0123456789'; |
387 | } |
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388 | |
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389 | if (($size < 1) || (strlen($chars) < 1)) { |
390 | return ''; |
391 | } |
ff4f08ff |
392 | |
4deb32f1 |
393 | sq_mt_randomize(); /* Initialize the random number generator */ |
ff4f08ff |
394 | |
4deb32f1 |
395 | $String = ''; |
ff4f08ff |
396 | $j = strlen( $chars ) - 1; |
66239b65 |
397 | while (strlen($String) < $size) { |
ff4f08ff |
398 | $String .= $chars{mt_rand(0, $j)}; |
66239b65 |
399 | } |
ff4f08ff |
400 | |
66239b65 |
401 | return $String; |
402 | } |
9374671f |
403 | |
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404 | function quoteimap($str) { |
66239b65 |
405 | return ereg_replace('(["\\])', '\\\\1', $str); |
406 | } |
1899535f |
407 | |
66239b65 |
408 | /** |
409 | * Trims every element in the array |
410 | */ |
411 | function TrimArray(&$array) { |
412 | foreach ($array as $k => $v) { |
413 | global $$k; |
414 | if (is_array($$k)) { |
415 | foreach ($$k as $k2 => $v2) { |
416 | $$k[$k2] = substr($v2, 1); |
23d6bd09 |
417 | } |
66239b65 |
418 | } else { |
419 | $$k = substr($v, 1); |
23d6bd09 |
420 | } |
f1ca21bd |
421 | |
4deb32f1 |
422 | /* Re-assign back to array. */ |
66239b65 |
423 | $array[$k] = $$k; |
424 | } |
f1ca21bd |
425 | } |
23d6bd09 |
426 | |
f72f61d8 |
427 | // Returns a link to the compose-page, taking in |
428 | // consideration the compose_in_new and javascript |
429 | // settings. |
430 | // |
d62c4938 |
431 | function makeComposeLink($url, $text = null) |
432 | { |
433 | global $compose_new_win,$javascript_on; |
434 | |
435 | if(!$text) { |
436 | $text = _("Compose"); |
437 | } |
438 | |
f72f61d8 |
439 | |
440 | // if not using "compose in new window", make |
441 | // regular link and be done with it |
442 | // |
d62c4938 |
443 | if($compose_new_win != '1') { |
444 | return makeInternalLink($url, $text, 'right'); |
445 | } |
446 | |
f72f61d8 |
447 | |
448 | // |
449 | // build the compose in new window link... |
450 | // |
451 | |
452 | |
453 | // if javascript is on, use onClick event to handle it |
454 | // |
d62c4938 |
455 | if($javascript_on) { |
456 | sqgetGlobalVar('base_uri', $base_uri, SQ_SESSION); |
457 | return '<a href="javascript:void(0)" onclick="comp_in_new(\''.$base_uri.$url.'\')">'. $text.'</a>'; |
458 | } |
459 | |
f72f61d8 |
460 | |
461 | // otherwise, just open new window using regular HTML |
462 | // |
d62c4938 |
463 | return makeInternalLink($url, $text, '_blank'); |
f72f61d8 |
464 | |
d62c4938 |
465 | } |
466 | |
f1ca21bd |
467 | /** |
7fe09a30 |
468 | * sm_print_r($some_variable, [$some_other_variable [, ...]]); |
50cc40fe |
469 | * Debugging function - does the same as print_r, but makes sure special |
470 | * characters are converted to htmlentities first. This will allow |
471 | * values like <some@email.address> to be displayed. |
472 | * The output is wrapped in <pre> and </pre> tags. |
473 | */ |
7fe09a30 |
474 | function sm_print_r() { |
50cc40fe |
475 | ob_start(); // Buffer output |
7fe09a30 |
476 | foreach(func_get_args() as $var) { |
477 | print_r($var); |
478 | echo "\n"; |
479 | } |
50cc40fe |
480 | $buffer = ob_get_contents(); // Grab the print_r output |
481 | ob_end_clean(); // Silently discard the output & stop buffering |
f1ca21bd |
482 | print '<pre>'; |
50cc40fe |
483 | print htmlentities($buffer); |
f1ca21bd |
484 | print '</pre>'; |
50cc40fe |
485 | } |
486 | |
43fdb2a4 |
487 | $PHP_SELF = php_self(); |
ef1932a4 |
488 | ?> |