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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) 1999-2004 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 | * |
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12 | * @version $Id$ |
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13 | * @package squirrelmail |
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14 | */ |
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15 | |
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16 | /** |
17 | * SquirrelMail version number -- DO NOT CHANGE |
18 | */ |
19 | global $version; |
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20 | $version = '1.5.1 [CVS]'; |
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21 | |
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22 | /** |
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23 | * SquirrelMail internal version number -- DO NOT CHANGE |
24 | * $sm_internal_version = array (release, major, minor) |
25 | */ |
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26 | global $SQM_INTERNAL_VERSION; |
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27 | $SQM_INTERNAL_VERSION = array(1,5,1); |
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28 | |
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29 | /** |
30 | * There can be a circular issue with includes, where the $version string is |
31 | * referenced by the include of global.php, etc. before it's defined. |
32 | * For that reason, bring in global.php AFTER we define the version strings. |
33 | */ |
34 | require_once(SM_PATH . 'functions/global.php'); |
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35 | |
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36 | /** |
37 | * Appends citation markers to the string. |
38 | * Also appends a trailing space. |
39 | * |
40 | * @author Justus Pendleton |
41 | * |
42 | * @param string str The string to append to |
43 | * @param int citeLevel the number of markers to append |
44 | * @return null |
45 | */ |
46 | function sqMakeCite (&$str, $citeLevel) { |
47 | for ($i = 0; $i < $citeLevel; $i++) { |
48 | $str .= '>'; |
49 | } |
50 | if ($citeLevel != 0) { |
51 | $str .= ' '; |
52 | } |
53 | } |
54 | |
55 | /** |
56 | * Create a newline in the string, adding citation |
57 | * markers to the newline as necessary. |
58 | * |
59 | * @author Justus Pendleton |
60 | * |
61 | * @param string str the string to make a newline in |
62 | * @param int citeLevel the citation level the newline is at |
63 | * @param int column starting column of the newline |
64 | * @return null |
65 | */ |
66 | function sqMakeNewLine (&$str, $citeLevel, &$column) { |
67 | $str .= "\n"; |
68 | $column = 0; |
69 | if ($citeLevel > 0) { |
70 | sqMakeCite ($str, $citeLevel); |
71 | $column = $citeLevel + 1; |
72 | } else { |
73 | $column = 0; |
74 | } |
75 | } |
76 | |
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77 | /** |
78 | * Checks for spaces in strings - only used if PHP doesn't have native ctype support |
79 | * |
80 | * @author Tomas Kuliavas |
81 | * According to Tomas: |
82 | * You might be able to rewrite the function by adding short evaluation form |
83 | * or using preg_match instead of ereg. It is possible that you must use |
84 | * preg_match for binary safe comparison. |
85 | * |
86 | * possible problems: |
87 | * - iso-2022-xx charsets - hex 20 might be part of other symbol. I might |
88 | * be wrong. 0x20 is not used in iso-2022-jp. I haven't checked iso-2022-kr |
89 | * and iso-2022-cn mappings. |
90 | * |
91 | * - no-break space ( ) - it is 8bit symbol, that depends on charset. |
92 | * there are at least three different charset groups that have nbsp in |
93 | * different places. |
94 | * |
95 | * I don't see any charset/nbsp options in php ctype either. |
96 | * |
97 | * @param string $string tested string |
98 | * @return bool true when space symbols are present in test string |
99 | */ |
100 | function sm_ctype_space($string) { |
101 | if ( ereg("[\11-\15]", $string) || ereg("[\40]", $string) ) { |
102 | return true; |
103 | } else { |
104 | return false; |
105 | } |
106 | } |
107 | |
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108 | /** |
109 | * Wraps text at $wrap characters. While sqWordWrap takes |
110 | * a single line of text and wraps it, this function works |
111 | * on the entire corpus at once, this allows it to be a little |
112 | * bit smarter and when and how to wrap. |
113 | * |
114 | * @author Justus Pendleton |
115 | * |
116 | * @param string body the entire body of text |
117 | * @param int wrap the maximum line length |
118 | * @return string the wrapped text |
119 | */ |
120 | function &sqBodyWrap (&$body, $wrap) { |
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121 | //check for ctype support, and fake it if it doesn't exist |
122 | if (!function_exists('ctype_space')) { |
123 | function ctype_space ($string) { |
124 | return sm_ctype_space($string); |
125 | } |
126 | } |
127 | |
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128 | // the newly wrapped text |
129 | $outString = ''; |
130 | // current column since the last newline in the outstring |
131 | $outStringCol = 0; |
132 | $length = strlen($body); |
133 | // where we are in the original string |
134 | $pos = 0; |
135 | // the number of >>> citation markers we are currently at |
136 | $citeLevel = 0; |
137 | |
138 | // the main loop, whenever we start a newline of input text |
139 | // we start from here |
140 | while ($pos < $length) { |
141 | // we're at the beginning of a line, get the new cite level |
142 | $newCiteLevel = 0; |
143 | |
144 | while (($pos < $length) && ($body{$pos} == '>')) { |
145 | $newCiteLevel++; |
146 | $pos++; |
147 | |
148 | // skip over any spaces interleaved among the cite markers |
149 | while (($pos < $length) && ($body{$pos} == ' ')) { |
150 | $pos++; |
151 | } |
152 | if ($pos >= $length) { |
153 | break; |
154 | } |
155 | } |
156 | |
157 | // special case: if this is a blank line then maintain it |
158 | // (i.e. try to preserve original paragraph breaks) |
159 | // unless they occur at the very beginning of the text |
160 | if (($body{$pos} == "\n") && (strlen($outString) != 0)) { |
161 | $outStringLast = $outString{strlen($outString) - 1}; |
162 | if ($outStringLast != "\n") { |
163 | $outString .= "\n"; |
164 | } |
165 | sqMakeCite ($outString, $newCiteLevel); |
166 | $outString .= "\n"; |
167 | $pos++; |
168 | $outStringCol = 0; |
169 | continue; |
170 | } |
171 | |
172 | // if the cite level has changed, then start a new line |
173 | // with the new cite level. |
174 | if (($citeLevel != $newCiteLevel) && ($pos > ($newCiteLevel + 1)) && ($outStringCol != 0)) { |
175 | sqMakeNewLine ($outString, 0, $outStringCol); |
176 | } |
177 | |
178 | $citeLevel = $newCiteLevel; |
179 | |
180 | // prepend the quote level if necessary |
181 | if ($outStringCol == 0) { |
182 | sqMakeCite ($outString, $citeLevel); |
183 | // if we added a citation then move the column |
184 | // out by citelevel + 1 (the cite markers + the space) |
185 | $outStringCol = $citeLevel + ($citeLevel ? 1 : 0); |
186 | } else if ($outStringCol > $citeLevel) { |
187 | // not a cite and we're not at the beginning of a line |
188 | // in the output. add a space to separate the new text |
189 | // from previous text. |
190 | $outString .= ' '; |
191 | $outStringCol++; |
192 | } |
193 | |
194 | // find the next newline -- we don't want to go further than that |
195 | $nextNewline = strpos ($body, "\n", $pos); |
196 | if ($nextNewline === FALSE) { |
197 | $nextNewline = $length; |
198 | } |
199 | |
200 | // Don't wrap unquoted lines at all. For now the textarea |
201 | // will work fine for this. Maybe revisit this later though |
202 | // (for completeness more than anything else, I think) |
203 | if ($citeLevel == 0) { |
204 | $outString .= substr ($body, $pos, ($nextNewline - $pos)); |
205 | $outStringCol = $nextNewline - $pos; |
206 | if ($nextNewline != $length) { |
207 | sqMakeNewLine ($outString, 0, $outStringCol); |
208 | } |
209 | $pos = $nextNewline + 1; |
210 | continue; |
211 | } |
212 | |
213 | // inner loop, (obviously) handles wrapping up to |
214 | // the next newline |
215 | while ($pos < $nextNewline) { |
216 | // skip over initial spaces |
217 | while (($pos < $nextNewline) && (ctype_space ($body{$pos}))) { |
218 | $pos++; |
219 | } |
220 | |
221 | // if this is a short line then just append it and continue outer loop |
222 | if (($outStringCol + $nextNewline - $pos) <= ($wrap - $citeLevel - 1)) { |
223 | // if this is the final line in the input string then include |
224 | // any trailing newlines |
225 | if (($nextNewline + 1 == $length) && ($body{$nextNewline} == "\n")) { |
226 | $nextNewline++; |
227 | } |
228 | |
229 | // trim trailing spaces |
230 | $lastRealChar = $nextNewline; |
231 | while (($lastRealChar > $pos) && (ctype_space ($body{$lastRealChar}))) { |
232 | $lastRealChar--; |
233 | } |
234 | |
235 | $outString .= substr ($body, $pos, ($lastRealChar - $pos + 1)); |
236 | $outStringCol += ($lastRealChar - $pos); |
237 | $pos = $nextNewline + 1; |
238 | continue; |
239 | } |
240 | |
241 | $eol = $pos + $wrap - $citeLevel - $outStringCol; |
242 | // eol is the tentative end of line. |
243 | // look backwards for there for a whitespace to break at. |
244 | // if it's already less than our current position then |
245 | // our current line is already too long, break immediately |
246 | // and restart outer loop |
247 | if ($eol <= $pos) { |
248 | sqMakeNewLine ($outString, $citeLeve, $outStringCol); |
249 | continue; |
250 | } |
251 | |
252 | // start looking backwards for whitespace to break at. |
253 | $breakPoint = $eol; |
254 | while (($breakPoint > $pos) && (! ctype_space ($body{$breakPoint}))) { |
255 | $breakPoint--; |
256 | } |
257 | |
258 | // if we didn't find a breakpoint by looking backward then we |
259 | // need to figure out what to do about that |
260 | if ($breakPoint == $pos) { |
261 | // if we are not at the beginning then end this line |
262 | // and start a new loop |
263 | if ($outStringCol > ($citeLevel + 1)) { |
264 | sqMakeNewLine ($outString, $citeLevel, $outStringCol); |
265 | continue; |
266 | } else { |
267 | // just hard break here. most likely we are breaking |
268 | // a really long URL. could also try searching |
269 | // forward for a break point, which is what Mozilla |
270 | // does. don't bother for now. |
271 | $breakPoint = $eol; |
272 | } |
273 | } |
274 | |
275 | // special case: maybe we should have wrapped last |
276 | // time. if the first breakpoint here makes the |
277 | // current line too long and there is already text on |
278 | // the current line, break and loop again if at |
279 | // beginning of current line, don't force break |
280 | $SLOP = 6; |
281 | if ((($outStringCol + ($breakPoint - $pos)) > ($wrap + $SLOP)) && ($outStringCol > ($citeLevel + 1))) { |
282 | sqMakeNewLine ($outString, $citeLevel, $outStringCol); |
283 | continue; |
284 | } |
285 | |
286 | // skip newlines or whitespace at the beginning of the string |
287 | $substring = substr ($body, $pos, ($breakPoint - $pos)); |
288 | $substring = rtrim ($substring); // do rtrim and ctype_space have the same ideas about whitespace? |
289 | $outString .= $substring; |
290 | $outStringCol += strlen ($substring); |
291 | // advance past the whitespace which caused the wrap |
292 | $pos = $breakPoint; |
293 | while (($pos < $length) && (ctype_space ($body{$pos}))) { |
294 | $pos++; |
295 | } |
296 | if ($pos < $length) { |
297 | sqMakeNewLine ($outString, $citeLevel, $outStringCol); |
298 | } |
299 | } |
300 | } |
301 | |
302 | return $outString; |
303 | } |
304 | |
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305 | /** |
306 | * Wraps text at $wrap characters |
307 | * |
308 | * Has a problem with special HTML characters, so call this before |
309 | * you do character translation. |
310 | * |
311 | * Specifically, ' comes up as 5 characters instead of 1. |
312 | * This should not add newlines to the end of lines. |
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313 | * |
314 | * @param string line the line of text to wrap, by ref |
315 | * @param int wrap the maximum line lenth |
316 | * @return void |
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317 | */ |
318 | function sqWordWrap(&$line, $wrap) { |
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319 | global $languages, $squirrelmail_language; |
320 | |
321 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
322 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'])) { |
323 | if (mb_detect_encoding($line) != 'ASCII') { |
324 | $line = $languages[$squirrelmail_language]['XTRA_CODE']('wordwrap', $line, $wrap); |
325 | return; |
326 | } |
327 | } |
328 | |
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329 | ereg("^([\t >]*)([^\t >].*)?$", $line, $regs); |
330 | $beginning_spaces = $regs[1]; |
331 | if (isset($regs[2])) { |
332 | $words = explode(' ', $regs[2]); |
333 | } else { |
334 | $words = ''; |
335 | } |
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336 | |
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337 | $i = 0; |
338 | $line = $beginning_spaces; |
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339 | |
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340 | while ($i < count($words)) { |
341 | /* Force one word to be on a line (minimum) */ |
342 | $line .= $words[$i]; |
343 | $line_len = strlen($beginning_spaces) + strlen($words[$i]) + 2; |
344 | if (isset($words[$i + 1])) |
345 | $line_len += strlen($words[$i + 1]); |
346 | $i ++; |
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347 | |
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348 | /* Add more words (as long as they fit) */ |
349 | while ($line_len < $wrap && $i < count($words)) { |
350 | $line .= ' ' . $words[$i]; |
351 | $i++; |
352 | if (isset($words[$i])) |
353 | $line_len += strlen($words[$i]) + 1; |
354 | else |
355 | $line_len += 1; |
356 | } |
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357 | |
5cc0b70e |
358 | /* Skip spaces if they are the first thing on a continued line */ |
359 | while (!isset($words[$i]) && $i < count($words)) { |
360 | $i ++; |
361 | } |
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362 | |
5cc0b70e |
363 | /* Go to the next line if we have more to process */ |
364 | if ($i < count($words)) { |
e0858036 |
365 | $line .= "\n"; |
5cc0b70e |
366 | } |
367 | } |
368 | } |
369 | |
341abbd6 |
370 | /** |
371 | * Does the opposite of sqWordWrap() |
8b096f0a |
372 | * @param string body the text to un-wordwrap |
373 | * @return void |
341abbd6 |
374 | */ |
375 | function sqUnWordWrap(&$body) { |
e842b215 |
376 | global $squirrelmail_language; |
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377 | |
e842b215 |
378 | if ($squirrelmail_language == 'ja_JP') { |
379 | return; |
380 | } |
381 | |
341abbd6 |
382 | $lines = explode("\n", $body); |
383 | $body = ''; |
384 | $PreviousSpaces = ''; |
385 | $cnt = count($lines); |
386 | for ($i = 0; $i < $cnt; $i ++) { |
387 | preg_match("/^([\t >]*)([^\t >].*)?$/", $lines[$i], $regs); |
388 | $CurrentSpaces = $regs[1]; |
389 | if (isset($regs[2])) { |
390 | $CurrentRest = $regs[2]; |
1e4a4feb |
391 | } else { |
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392 | $CurrentRest = ''; |
393 | } |
394 | |
341abbd6 |
395 | if ($i == 0) { |
396 | $PreviousSpaces = $CurrentSpaces; |
397 | $body = $lines[$i]; |
398 | } else if (($PreviousSpaces == $CurrentSpaces) /* Do the beginnings match */ |
399 | && (strlen($lines[$i - 1]) > 65) /* Over 65 characters long */ |
400 | && strlen($CurrentRest)) { /* and there's a line to continue with */ |
401 | $body .= ' ' . $CurrentRest; |
402 | } else { |
403 | $body .= "\n" . $lines[$i]; |
404 | $PreviousSpaces = $CurrentSpaces; |
405 | } |
406 | } |
407 | $body .= "\n"; |
408 | } |
409 | |
66239b65 |
410 | /** |
411 | * If $haystack is a full mailbox name and $needle is the mailbox |
412 | * separator character, returns the last part of the mailbox name. |
8b096f0a |
413 | * |
414 | * @param string haystack full mailbox name to search |
415 | * @param string needle the mailbox separator character |
416 | * @return string the last part of the mailbox name |
66239b65 |
417 | */ |
418 | function readShortMailboxName($haystack, $needle) { |
97b1248c |
419 | |
66239b65 |
420 | if ($needle == '') { |
97b1248c |
421 | $elem = $haystack; |
422 | } else { |
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423 | $parts = explode($needle, $haystack); |
424 | $elem = array_pop($parts); |
425 | while ($elem == '' && count($parts)) { |
426 | $elem = array_pop($parts); |
427 | } |
66239b65 |
428 | } |
97b1248c |
429 | return( $elem ); |
66239b65 |
430 | } |
3302d0d4 |
431 | |
8b096f0a |
432 | /** |
4445e6b3 |
433 | * php_self |
434 | * |
8b096f0a |
435 | * Creates an URL for the page calling this function, using either the PHP global |
436 | * REQUEST_URI, or the PHP global PHP_SELF with QUERY_STRING added. |
437 | * |
438 | * @return string the complete url for this page |
439 | */ |
43fdb2a4 |
440 | function php_self () { |
961ca3d8 |
441 | if ( sqgetGlobalVar('REQUEST_URI', $req_uri, SQ_SERVER) && !empty($req_uri) ) { |
442 | return $req_uri; |
43fdb2a4 |
443 | } |
f1ca21bd |
444 | |
961ca3d8 |
445 | if ( sqgetGlobalVar('PHP_SELF', $php_self, SQ_SERVER) && !empty($php_self) ) { |
f72f61d8 |
446 | |
447 | // need to add query string to end of PHP_SELF to match REQUEST_URI |
448 | // |
449 | if ( sqgetGlobalVar('QUERY_STRING', $query_string, SQ_SERVER) && !empty($query_string) ) { |
450 | $php_self .= '?' . $query_string; |
451 | } |
452 | |
961ca3d8 |
453 | return $php_self; |
f1ca21bd |
454 | } |
455 | |
961ca3d8 |
456 | return ''; |
43fdb2a4 |
457 | } |
458 | |
459 | |
66239b65 |
460 | /** |
4445e6b3 |
461 | * get_location |
462 | * |
8b096f0a |
463 | * Determines the location to forward to, relative to your server. |
464 | * This is used in HTTP Location: redirects. |
66239b65 |
465 | * If this doesnt work correctly for you (although it should), you can |
8b096f0a |
466 | * remove all this code except the last two lines, and have it return |
467 | * the right URL for your site, something like: |
468 | * |
469 | * http://www.example.com/squirrelmail/ |
66239b65 |
470 | * |
8b096f0a |
471 | * @return string the base url for this SquirrelMail installation |
66239b65 |
472 | */ |
473 | function get_location () { |
f1ca21bd |
474 | |
961ca3d8 |
475 | global $imap_server_type; |
238703be |
476 | |
4deb32f1 |
477 | /* Get the path, handle virtual directories */ |
f1ca21bd |
478 | if(strpos(php_self(), '?')) { |
479 | $path = substr(php_self(), 0, strpos(php_self(), '?')); |
480 | } else { |
481 | $path = php_self(); |
482 | } |
483 | $path = substr($path, 0, strrpos($path, '/')); |
238703be |
484 | if ( sqgetGlobalVar('sq_base_url', $full_url, SQ_SESSION) ) { |
485 | return $full_url . $path; |
486 | } |
487 | |
66239b65 |
488 | /* Check if this is a HTTPS or regular HTTP request. */ |
489 | $proto = 'http://'; |
f1ca21bd |
490 | |
66239b65 |
491 | /* |
492 | * If you have 'SSLOptions +StdEnvVars' in your apache config |
44827b4d |
493 | * OR if you have HTTPS=on in your HTTP_SERVER_VARS |
66239b65 |
494 | * OR if you are on port 443 |
495 | */ |
496 | $getEnvVar = getenv('HTTPS'); |
497 | if ((isset($getEnvVar) && !strcasecmp($getEnvVar, 'on')) || |
961ca3d8 |
498 | (sqgetGlobalVar('HTTPS', $https_on, SQ_SERVER) && !strcasecmp($https_on, 'on')) || |
499 | (sqgetGlobalVar('SERVER_PORT', $server_port, SQ_SERVER) && $server_port == 443)) { |
8a549df2 |
500 | $proto = 'https://'; |
66239b65 |
501 | } |
f1ca21bd |
502 | |
4deb32f1 |
503 | /* Get the hostname from the Host header or server config. */ |
961ca3d8 |
504 | if ( !sqgetGlobalVar('HTTP_HOST', $host, SQ_SERVER) || empty($host) ) { |
505 | if ( !sqgetGlobalVar('SERVER_NAME', $host, SQ_SERVER) || empty($host) ) { |
506 | $host = ''; |
507 | } |
66239b65 |
508 | } |
f1ca21bd |
509 | |
66239b65 |
510 | $port = ''; |
511 | if (! strstr($host, ':')) { |
961ca3d8 |
512 | if (sqgetGlobalVar('SERVER_PORT', $server_port, SQ_SERVER)) { |
f1ca21bd |
513 | if (($server_port != 80 && $proto == 'http://') || |
961ca3d8 |
514 | ($server_port != 443 && $proto == 'https://')) { |
515 | $port = sprintf(':%d', $server_port); |
66239b65 |
516 | } |
517 | } |
518 | } |
f1ca21bd |
519 | |
8de7f698 |
520 | /* this is a workaround for the weird macosx caching that |
521 | causes Apache to return 16080 as the port number, which causes |
522 | SM to bail */ |
f1ca21bd |
523 | |
8de7f698 |
524 | if ($imap_server_type == 'macosx' && $port == ':16080') { |
525 | $port = ''; |
526 | } |
f1ca21bd |
527 | |
238703be |
528 | /* Fallback is to omit the server name and use a relative */ |
529 | /* URI, although this is not RFC 2616 compliant. */ |
530 | $full_url = ($host ? $proto . $host . $port : ''); |
531 | sqsession_register($full_url, 'sq_base_url'); |
532 | return $full_url . $path; |
66239b65 |
533 | } |
dcaf2a49 |
534 | |
9374671f |
535 | |
66239b65 |
536 | /** |
4445e6b3 |
537 | * Encrypts password |
538 | * |
8b096f0a |
539 | * These functions are used to encrypt the password before it is |
540 | * stored in a cookie. The encryption key is generated by |
541 | * OneTimePadCreate(); |
542 | * |
543 | * @param string string the (password)string to encrypt |
544 | * @param string epad the encryption key |
545 | * @return string the base64-encoded encrypted password |
66239b65 |
546 | */ |
547 | function OneTimePadEncrypt ($string, $epad) { |
548 | $pad = base64_decode($epad); |
549 | $encrypted = ''; |
550 | for ($i = 0; $i < strlen ($string); $i++) { |
551 | $encrypted .= chr (ord($string[$i]) ^ ord($pad[$i])); |
552 | } |
f1ca21bd |
553 | |
66239b65 |
554 | return base64_encode($encrypted); |
555 | } |
556 | |
8b096f0a |
557 | /** |
4445e6b3 |
558 | * Decrypts a password from the cookie |
559 | * |
560 | * Decrypts a password from the cookie, encrypted by OneTimePadEncrypt. |
8b096f0a |
561 | * This uses the encryption key that is stored in the session. |
562 | * |
563 | * @param string string the string to decrypt |
564 | * @param string epad the encryption key from the session |
565 | * @return string the decrypted password |
566 | */ |
66239b65 |
567 | function OneTimePadDecrypt ($string, $epad) { |
568 | $pad = base64_decode($epad); |
569 | $encrypted = base64_decode ($string); |
570 | $decrypted = ''; |
571 | for ($i = 0; $i < strlen ($encrypted); $i++) { |
572 | $decrypted .= chr (ord($encrypted[$i]) ^ ord($pad[$i])); |
573 | } |
f1ca21bd |
574 | |
66239b65 |
575 | return $decrypted; |
576 | } |
9374671f |
577 | |
9374671f |
578 | |
66239b65 |
579 | /** |
4445e6b3 |
580 | * Randomizes the mt_rand() function. |
581 | * |
c9d61baf |
582 | * Toss this in strings or integers and it will seed the generator |
583 | * appropriately. With strings, it is better to get them long. |
4445e6b3 |
584 | * Use md5() to lengthen smaller strings. |
8b096f0a |
585 | * |
586 | * @param mixed val a value to seed the random number generator |
587 | * @return void |
66239b65 |
588 | */ |
589 | function sq_mt_seed($Val) { |
4deb32f1 |
590 | /* if mt_getrandmax() does not return a 2^n - 1 number, |
591 | this might not work well. This uses $Max as a bitmask. */ |
66239b65 |
592 | $Max = mt_getrandmax(); |
f1ca21bd |
593 | |
66239b65 |
594 | if (! is_int($Val)) { |
66239b65 |
595 | $Val = crc32($Val); |
66239b65 |
596 | } |
f1ca21bd |
597 | |
66239b65 |
598 | if ($Val < 0) { |
599 | $Val *= -1; |
600 | } |
f1ca21bd |
601 | |
66239b65 |
602 | if ($Val = 0) { |
603 | return; |
604 | } |
f1ca21bd |
605 | |
66239b65 |
606 | mt_srand(($Val ^ mt_rand(0, $Max)) & $Max); |
607 | } |
9374671f |
608 | |
9374671f |
609 | |
66239b65 |
610 | /** |
4445e6b3 |
611 | * Init random number generator |
612 | * |
66239b65 |
613 | * This function initializes the random number generator fairly well. |
614 | * It also only initializes it once, so you don't accidentally get |
615 | * the same 'random' numbers twice in one session. |
8b096f0a |
616 | * |
617 | * @return void |
66239b65 |
618 | */ |
619 | function sq_mt_randomize() { |
66239b65 |
620 | static $randomized; |
f1ca21bd |
621 | |
66239b65 |
622 | if ($randomized) { |
623 | return; |
624 | } |
f1ca21bd |
625 | |
66239b65 |
626 | /* Global. */ |
961ca3d8 |
627 | sqgetGlobalVar('REMOTE_PORT', $remote_port, SQ_SERVER); |
628 | sqgetGlobalVar('REMOTE_ADDR', $remote_addr, SQ_SERVER); |
66239b65 |
629 | sq_mt_seed((int)((double) microtime() * 1000000)); |
961ca3d8 |
630 | sq_mt_seed(md5($remote_port . $remote_addr . getmypid())); |
f1ca21bd |
631 | |
66239b65 |
632 | /* getrusage */ |
633 | if (function_exists('getrusage')) { |
4deb32f1 |
634 | /* Avoid warnings with Win32 */ |
66239b65 |
635 | $dat = @getrusage(); |
636 | if (isset($dat) && is_array($dat)) { |
821a8e9c |
637 | $Str = ''; |
638 | foreach ($dat as $k => $v) |
66239b65 |
639 | { |
640 | $Str .= $k . $v; |
641 | } |
821a8e9c |
642 | sq_mt_seed(md5($Str)); |
66239b65 |
643 | } |
644 | } |
f1ca21bd |
645 | |
961ca3d8 |
646 | if(sqgetGlobalVar('UNIQUE_ID', $unique_id, SQ_SERVER)) { |
647 | sq_mt_seed(md5($unique_id)); |
0b97a708 |
648 | } |
f1ca21bd |
649 | |
66239b65 |
650 | $randomized = 1; |
651 | } |
652 | |
8b096f0a |
653 | /** |
4445e6b3 |
654 | * Creates encryption key |
655 | * |
8b096f0a |
656 | * Creates an encryption key for encrypting the password stored in the cookie. |
657 | * The encryption key itself is stored in the session. |
658 | * |
659 | * @param int length optional, length of the string to generate |
660 | * @return string the encryption key |
661 | */ |
66239b65 |
662 | function OneTimePadCreate ($length=100) { |
663 | sq_mt_randomize(); |
f1ca21bd |
664 | |
66239b65 |
665 | $pad = ''; |
666 | for ($i = 0; $i < $length; $i++) { |
667 | $pad .= chr(mt_rand(0,255)); |
668 | } |
f1ca21bd |
669 | |
66239b65 |
670 | return base64_encode($pad); |
671 | } |
9374671f |
672 | |
66239b65 |
673 | /** |
8b096f0a |
674 | * Returns a string showing the size of the message/attachment. |
675 | * |
676 | * @param int bytes the filesize in bytes |
677 | * @return string the filesize in human readable format |
66239b65 |
678 | */ |
679 | function show_readable_size($bytes) { |
680 | $bytes /= 1024; |
681 | $type = 'k'; |
f1ca21bd |
682 | |
66239b65 |
683 | if ($bytes / 1024 > 1) { |
684 | $bytes /= 1024; |
e5f1e71c |
685 | $type = 'M'; |
66239b65 |
686 | } |
f1ca21bd |
687 | |
66239b65 |
688 | if ($bytes < 10) { |
689 | $bytes *= 10; |
690 | settype($bytes, 'integer'); |
691 | $bytes /= 10; |
692 | } else { |
693 | settype($bytes, 'integer'); |
694 | } |
f1ca21bd |
695 | |
66239b65 |
696 | return $bytes . '<small> ' . $type . '</small>'; |
697 | } |
9374671f |
698 | |
66239b65 |
699 | /** |
700 | * Generates a random string from the caracter set you pass in |
701 | * |
8b096f0a |
702 | * @param int size the size of the string to generate |
703 | * @param string chars a string containing the characters to use |
704 | * @param int flags a flag to add a specific set to the characters to use: |
705 | * Flags: |
706 | * 1 = add lowercase a-z to $chars |
707 | * 2 = add uppercase A-Z to $chars |
708 | * 4 = add numbers 0-9 to $chars |
709 | * @return string the random string |
66239b65 |
710 | */ |
66239b65 |
711 | function GenerateRandomString($size, $chars, $flags = 0) { |
712 | if ($flags & 0x1) { |
713 | $chars .= 'abcdefghijklmnopqrstuvwxyz'; |
714 | } |
715 | if ($flags & 0x2) { |
716 | $chars .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; |
717 | } |
718 | if ($flags & 0x4) { |
719 | $chars .= '0123456789'; |
720 | } |
f1ca21bd |
721 | |
66239b65 |
722 | if (($size < 1) || (strlen($chars) < 1)) { |
723 | return ''; |
724 | } |
ff4f08ff |
725 | |
4deb32f1 |
726 | sq_mt_randomize(); /* Initialize the random number generator */ |
ff4f08ff |
727 | |
4deb32f1 |
728 | $String = ''; |
ff4f08ff |
729 | $j = strlen( $chars ) - 1; |
66239b65 |
730 | while (strlen($String) < $size) { |
ff4f08ff |
731 | $String .= $chars{mt_rand(0, $j)}; |
66239b65 |
732 | } |
ff4f08ff |
733 | |
66239b65 |
734 | return $String; |
735 | } |
9374671f |
736 | |
8b096f0a |
737 | /** |
738 | * Escapes special characters for use in IMAP commands. |
4445e6b3 |
739 | * |
8b096f0a |
740 | * @param string the string to escape |
741 | * @return string the escaped string |
742 | */ |
fbb76d0e |
743 | function quoteimap($str) { |
ab1df059 |
744 | return preg_replace("/([\"\\\\])/", "\\\\$1", $str); |
66239b65 |
745 | } |
1899535f |
746 | |
66239b65 |
747 | /** |
4445e6b3 |
748 | * Trims array |
749 | * |
8b096f0a |
750 | * Trims every element in the array, ie. remove the first char of each element |
751 | * @param array array the array to trim |
66239b65 |
752 | */ |
753 | function TrimArray(&$array) { |
754 | foreach ($array as $k => $v) { |
755 | global $$k; |
756 | if (is_array($$k)) { |
757 | foreach ($$k as $k2 => $v2) { |
758 | $$k[$k2] = substr($v2, 1); |
23d6bd09 |
759 | } |
66239b65 |
760 | } else { |
761 | $$k = substr($v, 1); |
23d6bd09 |
762 | } |
f1ca21bd |
763 | |
4deb32f1 |
764 | /* Re-assign back to array. */ |
66239b65 |
765 | $array[$k] = $$k; |
766 | } |
f1ca21bd |
767 | } |
23d6bd09 |
768 | |
8b096f0a |
769 | /** |
4445e6b3 |
770 | * Create compose link |
771 | * |
8b096f0a |
772 | * Returns a link to the compose-page, taking in consideration |
773 | * the compose_in_new and javascript settings. |
774 | * @param string url the URL to the compose page |
775 | * @param string text the link text, default "Compose" |
776 | * @return string a link to the compose page |
777 | */ |
21a957a9 |
778 | function makeComposeLink($url, $text = null, $target='') |
d62c4938 |
779 | { |
780 | global $compose_new_win,$javascript_on; |
781 | |
782 | if(!$text) { |
783 | $text = _("Compose"); |
784 | } |
785 | |
f72f61d8 |
786 | |
c9d61baf |
787 | // if not using "compose in new window", make |
f72f61d8 |
788 | // regular link and be done with it |
d62c4938 |
789 | if($compose_new_win != '1') { |
21a957a9 |
790 | return makeInternalLink($url, $text, $target); |
d62c4938 |
791 | } |
792 | |
f72f61d8 |
793 | |
c9d61baf |
794 | // build the compose in new window link... |
f72f61d8 |
795 | |
796 | |
797 | // if javascript is on, use onClick event to handle it |
d62c4938 |
798 | if($javascript_on) { |
799 | sqgetGlobalVar('base_uri', $base_uri, SQ_SESSION); |
800 | return '<a href="javascript:void(0)" onclick="comp_in_new(\''.$base_uri.$url.'\')">'. $text.'</a>'; |
801 | } |
802 | |
f72f61d8 |
803 | |
804 | // otherwise, just open new window using regular HTML |
d62c4938 |
805 | return makeInternalLink($url, $text, '_blank'); |
f72f61d8 |
806 | |
d62c4938 |
807 | } |
808 | |
f1ca21bd |
809 | /** |
4445e6b3 |
810 | * Print variable |
811 | * |
8b096f0a |
812 | * sm_print_r($some_variable, [$some_other_variable [, ...]]); |
4445e6b3 |
813 | * |
8b096f0a |
814 | * Debugging function - does the same as print_r, but makes sure special |
815 | * characters are converted to htmlentities first. This will allow |
816 | * values like <some@email.address> to be displayed. |
4445e6b3 |
817 | * The output is wrapped in <<pre>> and <</pre>> tags. |
8b096f0a |
818 | * |
819 | * @return void |
820 | */ |
7fe09a30 |
821 | function sm_print_r() { |
50cc40fe |
822 | ob_start(); // Buffer output |
7fe09a30 |
823 | foreach(func_get_args() as $var) { |
824 | print_r($var); |
825 | echo "\n"; |
826 | } |
50cc40fe |
827 | $buffer = ob_get_contents(); // Grab the print_r output |
828 | ob_end_clean(); // Silently discard the output & stop buffering |
f1ca21bd |
829 | print '<pre>'; |
50cc40fe |
830 | print htmlentities($buffer); |
f1ca21bd |
831 | print '</pre>'; |
50cc40fe |
832 | } |
833 | |
3ecad5e6 |
834 | /** |
835 | * version of fwrite which checks for failure |
836 | */ |
837 | function sq_fwrite($fp, $string) { |
c9d61baf |
838 | // write to file |
839 | $count = @fwrite($fp,$string); |
840 | // the number of bytes written should be the length of the string |
841 | if($count != strlen($string)) { |
842 | return FALSE; |
843 | } |
844 | |
845 | return $count; |
3ecad5e6 |
846 | } |
847 | |
36e1180b |
848 | /** |
849 | * sq_get_html_translation_table |
850 | * |
851 | * Returns the translation table used by sq_htmlentities() |
852 | * |
853 | * @param integer $table html translation table. Possible values (without quotes): |
deb22cec |
854 | * <ul> |
855 | * <li>HTML_ENTITIES - full html entities table defined by charset</li> |
856 | * <li>HTML_SPECIALCHARS - html special characters table</li> |
857 | * </ul> |
36e1180b |
858 | * @param integer $quote_style quote encoding style. Possible values (without quotes): |
c9d61baf |
859 | * <ul> |
deb22cec |
860 | * <li>ENT_COMPAT - (default) encode double quotes</li> |
861 | * <li>ENT_NOQUOTES - don't encode double or single quotes</li> |
862 | * <li>ENT_QUOTES - encode double and single quotes</li> |
c9d61baf |
863 | * </ul> |
36e1180b |
864 | * @param string $charset charset used for encoding. default to us-ascii, 'auto' uses $default_charset global value. |
865 | * @return array html translation array |
866 | */ |
867 | function sq_get_html_translation_table($table,$quote_style=ENT_COMPAT,$charset='us-ascii') { |
868 | global $default_charset; |
869 | |
870 | if ($table == HTML_SPECIALCHARS) $charset='us-ascii'; |
871 | |
872 | // Start array with ampersand |
873 | $sq_html_ent_table = array( "&" => '&' ); |
874 | |
875 | // < and > |
876 | $sq_html_ent_table = array_merge($sq_html_ent_table, |
c9d61baf |
877 | array("<" => '<', |
878 | ">" => '>') |
879 | ); |
36e1180b |
880 | // double quotes |
881 | if ($quote_style == ENT_COMPAT) |
882 | $sq_html_ent_table = array_merge($sq_html_ent_table, |
c9d61baf |
883 | array("\"" => '"') |
884 | ); |
36e1180b |
885 | |
886 | // double and single quotes |
887 | if ($quote_style == ENT_QUOTES) |
888 | $sq_html_ent_table = array_merge($sq_html_ent_table, |
c9d61baf |
889 | array("\"" => '"', |
890 | "'" => ''') |
891 | ); |
36e1180b |
892 | |
893 | if ($charset=='auto') $charset=$default_charset; |
894 | |
895 | // add entities that depend on charset |
896 | switch($charset){ |
897 | case 'iso-8859-1': |
898 | include_once(SM_PATH . 'functions/htmlentities/iso-8859-1.php'); |
899 | break; |
900 | case 'utf-8': |
901 | include_once(SM_PATH . 'functions/htmlentities/utf-8.php'); |
902 | break; |
903 | case 'us-ascii': |
904 | default: |
905 | break; |
906 | } |
907 | // return table |
908 | return $sq_html_ent_table; |
909 | } |
910 | |
911 | /** |
912 | * sq_htmlentities |
913 | * |
914 | * Convert all applicable characters to HTML entities. |
915 | * Minimal php requirement - v.4.0.5 |
916 | * |
917 | * @param string $string string that has to be sanitized |
918 | * @param integer $quote_style quote encoding style. Possible values (without quotes): |
c9d61baf |
919 | * <ul> |
deb22cec |
920 | * <li>ENT_COMPAT - (default) encode double quotes</li> |
921 | * <li>ENT_NOQUOTES - don't encode double or single quotes</li> |
922 | * <li>ENT_QUOTES - encode double and single quotes</li> |
c9d61baf |
923 | * </ul> |
36e1180b |
924 | * @param string $charset charset used for encoding. defaults to 'us-ascii', 'auto' uses $default_charset global value. |
925 | * @return string sanitized string |
926 | */ |
927 | function sq_htmlentities($string,$quote_style=ENT_COMPAT,$charset='us-ascii') { |
928 | // get translation table |
929 | $sq_html_ent_table=sq_get_html_translation_table(HTML_ENTITIES,$quote_style,$charset); |
930 | // convert characters |
931 | return str_replace(array_keys($sq_html_ent_table),array_values($sq_html_ent_table),$string); |
932 | } |
933 | |
43fdb2a4 |
934 | $PHP_SELF = php_self(); |
4445e6b3 |
935 | ?> |