banana/misc.inc.php

   1 <?php
   2 /********************************************************************************
   3  * include/misc.inc.php : Misc functions
   4  * -------------------------
   5  *
   6  * This file is part of the banana distribution
   7  * Copyright: See COPYING files that comes with this distribution
   8  ********************************************************************************/
   9
  10 /********************************************************************************
  11  *  MISC
  12  */
  13
  14 function _b_($str) { return utf8_decode(dgettext('banana', utf8_encode($str))); }
  15
  16 function to_entities($str) {
  17     require_once dirname(__FILE__).'/utf8.php';
  18     return utf8entities(htmlentities($str, ENT_NOQUOTES, 'UTF-8'));
  19 }
  20
  21 function is_utf8($s) { return iconv('utf-8', 'utf-8', $s) == $s; }
  22
  23 function textFormat_translate($format)
  24 {
  25     switch (strtolower($format)) {
  26         case 'plain':       return _b_('Texte brut');
  27         case 'richtext':    return _b_('Texte enrichi');
  28         case 'html':        return _b_('HTML');
  29         default:            return $format;
  30     }
  31 }
  32
  33 /********************************************************************************
  34  * HTML STUFF
  35  * Taken from php.net
  36  */
  37
  38 /**
  39  * @return string
  40  * @param string
  41  * @desc Strip forbidden tags and delegate tag-source check to removeEvilAttributes()
  42  */
  43 function removeEvilTags($source)
  44 {
  45     $allowedTags = '<h1><b><i><a><ul><li><pre><hr><blockquote><img><br><font><p><small><big><sup><sub><code>';
  46     $source = strip_tags($source, $allowedTags);
  47     return preg_replace('/<(.*?)>/ie', "'<'.removeEvilAttributes('\\1').'>'", $source);
  48 }
  49
  50 /**
  51  * @return string
  52  * @param string
  53  * @desc Strip forbidden attributes from a tag
  54  */
  55 function removeEvilAttributes($tagSource)
  56 {
  57     $stripAttrib = 'javascript:|onclick|ondblclick|onmousedown|onmouseup|onmouseover|'.
  58                    'onmousemove|onmouseout|onkeypress|onkeydown|onkeyup';
  59     return stripslashes(preg_replace("/$stripAttrib/i", '', $tagSource));
  60 }
  61
  62 /** Convert html to plain text
  63  */
  64 function htmlToPlainText($res)
  65 {
  66     $res = trim(html_entity_decode(strip_tags($res, '<br>')));
  67     $res = preg_replace("@<br[^>]>@i", "\n", $res);
  68     return $res;
  69 }
  70
  71 /********************************************************************************
  72  * RICHTEXT STUFF
  73  */
  74
  75 /** Convert richtext to html
  76  */
  77 function richtextToHtml($source)
  78 {
  79     $tags = Array('bold' => 'b',
  80                   'italic' => 'i',
  81                   'smaller' => 'small',
  82                   'bigger' => 'big',
  83                   'underline' => 'u',
  84                   'subscript' => 'sub',
  85                   'superscript' => 'sup',
  86                   'excerpt' => 'blockquote',
  87                   'paragraph' => 'p',
  88                   'nl' => 'br'
  89             );
  90
  91     // clean unsupported tags
  92     $protectedTags = '<signature><lt><comment><'.join('><', array_keys($tags)).'>';
  93     $source = strip_tags($source, $protectedTags);
  94
  95     // convert richtext tags to html
  96     foreach (array_keys($tags) as $tag) {
  97         $source = preg_replace('@(</?)'.$tag.'([^>]*>)@i', '\1'.$tags[$tag].'\2', $source);
  98     }
  99
 100     // some special cases
 101     $source = preg_replace('@<signature>@i', '<br>-- <br>', $source);
 102     $source = preg_replace('@</signature>@i', '', $source);
 103     $source = preg_replace('@<lt>@i', '&lt;', $source);
 104     $source = preg_replace('@<comment[^>]*>((?:[^<]|<(?!/comment>))*)</comment>@i', '<!-- \1 -->', $source);
 105     return removeEvilAttributes($source);
 106 }
 107
 108 /********************************************************************************
 109  *  HEADER STUFF
 110  */
 111
 112 function _headerdecode($charset, $c, $str) {
 113     $s = ($c == 'Q') ? quoted_printable_decode($str) : base64_decode($str);
 114     $s = iconv($charset, 'iso-8859-15', $s);
 115     return str_replace('_', ' ', $s);
 116 }
 117
 118 function headerDecode($value) {
 119     $val = preg_replace('/(=\?[^?]*\?[BQ]\?[^?]*\?=) (=\?[^?]*\?[BQ]\?[^?]*\?=)/', '\1\2', $value);
 120     return preg_replace('/=\?([^?]*)\?([BQ])\?([^?]*)\?=/e', '_headerdecode("\1", "\2", "\3")', $val);
 121 }
 122
 123 function headerEncode($value, $trim = 0) {
 124     if ($trim) {
 125         if (strlen($value) > $trim) {
 126             $value = substr($value, 0, $trim) . "[...]";
 127         }
 128     }
 129     return "=?UTF-8?B?".base64_encode($value)."?=";
 130 }
 131
 132 function header_translate($hdr) {
 133     switch ($hdr) {
 134         case 'from':            return _b_('De');
 135         case 'subject':         return _b_('Sujet');
 136         case 'newsgroups':      return _b_('Forums');
 137         case 'followup-to':     return _b_('Suivi-à');
 138         case 'date':            return _b_('Date');
 139         case 'organization':    return _b_('Organisation');
 140         case 'references':      return _b_('Références');
 141         case 'x-face':          return _b_('Image');
 142         default:
 143             if (function_exists('hook_headerTranslate')
 144                     && $res = hook_headerTranslate($hdr)) {
 145                 return $res;
 146             }
 147             return $hdr;
 148     }
 149 }
 150
 151 function formatDisplayHeader($_header,$_text) {
 152     global $banana;
 153     switch ($_header) {
 154         case "date":
 155             return formatDate($_text);
 156
 157         case "followup-to":
 158             case "newsgroups":
 159             $res = "";
 160             $groups = preg_split("/[\t ]*,[\t ]*/",$_text);
 161             foreach ($groups as $g) {
 162                 $res.="<a href='?group=$g'>$g</a>, ";
 163             }
 164             return substr($res,0, -2);
 165
 166         case "from":
 167             return formatFrom($_text);
 168
 169         case "references":
 170             $rsl     = "";
 171             $ndx     = 1;
 172             $text    = str_replace("><","> <",$_text);
 173             $text    = preg_split("/[ \t]/",strtr($text,$banana->spool->ids));
 174             $parents = preg_grep("/^\d+$/",$text);
 175             $p       = array_pop($parents);
 176             $par_ok  = Array();
 177
 178             while ($p) {
 179                 $par_ok[]=$p;
 180                 $p = $banana->spool->overview[$p]->parent;
 181             }
 182             foreach (array_reverse($par_ok) as $p) {
 183                 $rsl .= "<a href=\"?group={$banana->spool->group}&amp;artid=$p\">$ndx</a> ";
 184                 $ndx++;
 185             }
 186             return $rsl;
 187
 188         case "x-face":
 189             return '<img src="xface.php?face='.base64_encode($_text).'"  alt="x-face" />';
 190
 191         default:
 192             if (function_exists('hook_formatDisplayHeader')
 193                     && $res = hook_formatDisplayHeader($_header, $_text))
 194             {
 195                 return $res;
 196             }
 197             return htmlentities($_text);
 198     }
 199 }
 200
 201 /********************************************************************************
 202  *  FORMATTING STUFF
 203  */
 204
 205 function formatDate($_text) {
 206     return strftime("%A %d %B %Y, %H:%M (fuseau serveur)", strtotime($_text));
 207 }
 208
 209 function fancyDate($stamp) {
 210     $today  = intval(time() / (24*3600));
 211     $dday   = intval($stamp / (24*3600));
 212
 213     if ($today == $dday) {
 214         $format = "%H:%M";
 215     } elseif ($today == 1 + $dday) {
 216         $format = _b_('hier')." %H:%M";
 217     } elseif ($today < 7 + $dday) {
 218         $format = '%a %H:%M';
 219     } else {
 220         $format = '%a %e %b';
 221     }
 222     return strftime($format, $stamp);
 223 }
 224
 225 function formatFrom($text) {
 226 #     From: mark@cbosgd.ATT.COM
 227 #     From: mark@cbosgd.ATT.COM (Mark Horton)
 228 #     From: Mark Horton <mark@cbosgd.ATT.COM>
 229     $mailto = '<a href="&#109;&#97;&#105;&#108;&#116;&#111;&#58;';
 230
 231     $result = htmlentities($text);
 232     if (preg_match("/^([^ ]+)@([^ ]+)$/",$text,$regs)) {
 233         $result="$mailto{$regs[1]}&#64;{$regs[2]}\">".htmlentities($regs[1]."&#64;".$regs[2])."</a>";
 234     }
 235     if (preg_match("/^([^ ]+)@([^ ]+) \((.*)\)$/",$text,$regs)) {
 236         $result="$mailto{$regs[1]}&#64;{$regs[2]}\">".htmlentities($regs[3])."</a>";
 237     }
 238     if (preg_match("/^\"?([^<>\"]+)\"? +<(.+)@(.+)>$/",$text,$regs)) {
 239         $result="$mailto{$regs[2]}&#64;{$regs[3]}\">".htmlentities($regs[1])."</a>";
 240     }
 241     return preg_replace("/\\\(\(|\))/","\\1",$result);
 242 }
 243
 244 function displayshortcuts($first = -1) {
 245     global $banana;
 246     extract($banana->state);
 247
 248     $res  = '<div class="banana_scuts">';
 249     $res .= '[<a href="?">'._b_('Liste des forums').'</a>] ';
 250     if (is_null($group)) {
 251         return $res.'[<a href="?subscribe=1">'._b_('Abonnements').'</a>]</div>';
 252     }
 253
 254     $res .= "[<a href=\"?group=$group\">$group</a>] ";
 255
 256     if (is_null($artid)) {
 257         $res .= "[<a href=\"?group=$group&amp;action=new\">"._b_('Nouveau message')."</a>] ";
 258         if (sizeof($banana->spool->overview)>$banana->tmax) {
 259             $res .= '<br />';
 260             $n = intval(log(count($banana->spool->overview), 10))+1;
 261             for ($ndx=1; $ndx <= sizeof($banana->spool->overview); $ndx += $banana->tmax) {
 262                 if ($first==$ndx) {
 263                     $fmt = "[%0{$n}u-%0{$n}u] ";
 264                 } else {
 265                     $fmt = "[<a href=\"?group=$group&amp;first=$ndx\">%0{$n}u-%0{$n}u</a>] ";
 266                 }
 267                 $res .= sprintf($fmt, $ndx, min($ndx+$banana->tmax-1,sizeof($banana->spool->overview)));
 268             }
 269         }
 270     } else {
 271         $res .= "[<a href=\"?group=$group&amp;artid=$artid&amp;action=new\">"
 272             ._b_('Répondre')."</a>] ";
 273         if ($banana->post->checkcancel()) {
 274             $res .= "[<a href=\"?group=$group&amp;artid=$artid&amp;action=cancel\">"
 275                 ._b_('Annuler ce message')."</a>] ";
 276         }
 277     }
 278     return $res.'</div>';
 279 }
 280
 281 /********************************************************************************
 282  *  FORMATTING STUFF : BODY
 283  */
 284
 285 function wrap($text, $_prefix="")
 286 {
 287     $parts = preg_split("/\n-- ?\n/", $text);
 288     if (count($parts)  >1) {
 289         $sign = "\n-- \n" . array_pop($parts);
 290         $text = join("\n-- \n", $parts);
 291     } else {
 292         $sign = '';
 293         $text = $text;
 294     }
 295
 296     global $banana;
 297     $length = $banana->wrap;
 298     $cmd = "echo ".escapeshellarg($text)." | perl -MText::Autoformat -e 'autoformat {left=>1, right=>$length, all=>1 };'";
 299     exec($cmd, $result);
 300
 301     return $_prefix.join("\n$_prefix", $result).($_prefix ? '' : $sign);
 302 }
 303
 304 function formatbody($_text, $format='plain')
 305 {
 306     if ($format == 'html') {
 307         $res = '<br/>'.removeEvilTags(html_entity_decode(to_entities($_text))).'<br/>';
 308     } else if ($format == 'richtext') {
 309         $res = '<br/>'.richtextToHtml(html_entity_decode(to_entities($_text))).'<br/>';
 310         $format = 'html';
 311     } else {
 312         $res  = "\n\n" . to_entities(wrap($_text, ""))."\n\n";
 313     }
 314     $res  = preg_replace("/(&lt;|&gt;|&quot;)/", " \\1 ", $res);
 315     $res  = preg_replace('/(["\[])?((https?|ftp|news):\/\/[a-z@0-9.~%$£µ&i#\-+=_\/\?]*)(["\]])?/i', "\\1<a href=\"\\2\">\\2</a>\\4", $res);
 316     $res  = preg_replace("/ (&lt;|&gt;|&quot;) /", "\\1", $res);
 317
 318     if ($format == 'html') {
 319         $res = preg_replace("@(</p>)\n?-- \n?(<p[^>]*>|<br>)@", "\\1<br>-- \\2", $res);
 320         $res = preg_replace("@<br>\n?-- \n?(<p[^>]*>)@", "<br>-- <br>\\2", $res);
 321         $parts = preg_split("@(:?<p[^>]*>\n?-- \n?</p>|<br[^>]*>\n?-- \n?<br>)@", $res);
 322     } else {
 323         $parts = preg_split("/\n-- ?\n/", $res);
 324     }
 325
 326     if (count($parts) > 1) {
 327         $sign  = array_pop($parts);
 328         if ($format == 'html') {
 329             $res  = join('<br/>-- <br/>', $parts);
 330             $sign = '<hr style="width: 100%; margin: 1em 0em; " />'.$sign;
 331         } else {
 332             $res  = join('\n-- \n', $parts);
 333             $sign = '</pre><hr style="width: 100%; margin: 1em 0em; " /><pre>'.$sign;
 334         }
 335         return $res.$sign;
 336     } else {
 337         return $res;
 338     }
 339 }
 340
 341 ?>