common.php

   1 <?php // $Id$
   2
   3         error_reporting(E_ALL);
   4
   5         include("config.php");
   6
   7         // $viewcvs prepared by "config.php"
   8         if ($viewcvs==$HTTP_SERVER_VARS["SCRIPT_NAME"])
   9                 unset($viewcvs);
  10         $cvs_id_split=split(" ",$cvs_id);
  11         if (count($cvs_id_split)==8) {
  12                 $cvs_id_split[1]="<a href=\"$viewcvs\">".$cvs_id_split[1]."</a>";
  13                 $cvs_id_split[5]="<a href=\"mailto:".$cvs_id_split[5]."@".$HTTP_SERVER_VARS["HTTP_HOST"]."\">".$cvs_id_split[5]."</a>";
  14                 }
  15         $cvs_id_html=join(" ",$cvs_id_split);
  16
  17         $have_js=(isset($HTTP_GET_VARS["have_js"]) || isset($HTTP_POST_VARS["have_js"])
  18                         ? "?have_js=1" : "");
  19         if (isset($detect_js) && !$have_js)
  20                 $head.='<script type="text/javascript" src="have_js.js"></script>'."\n";
  21
  22         $user_agent=$HTTP_SERVER_VARS["HTTP_USER_AGENT"];
  23         if (ereg("[[:<:]]MSIE ([0-9]+)\\.",$user_agent,$msie_major_a))
  24                 $msie_major=$msie_major_a[1];
  25         else if (ereg("[[:<:]]Mozilla/([0-9]+)\\.",$user_agent,$mozilla_major_a))
  26                 $mozilla_major=$mozilla_major_a[1];
  27
  28 function addpercents($url)
  29 {
  30         $r=$c="";
  31         foreach(preg_split('//', $url, -1, PREG_SPLIT_NO_EMPTY) as $c)
  32                 if (ereg("[a-zA-Z0-9]",$c))
  33                         $r.=$c;
  34                 else
  35                         $r.=sprintf("%%%02X",ord($c));
  36         return($r);
  37 }
  38
  39 function fatal($msg="UNKNOWN")
  40 {
  41         global $admin_mail;
  42
  43         print("\n<br /><h1 class=\"error\">Nastala chyba pøi zpracování: $msg!</h1>\n"
  44                         ."<p>Mù¾ete tento problém nahlásit <a href=\"mailto:$admin_mail\">správci tohoto webu</a>.</p>\n");
  45         footer();
  46 }
  47
  48 function prepvar($name,$regex=".",$require=true)
  49 {
  50         global $HTTP_GET_VARS,$HTTP_POST_VARS;
  51
  52              if (isset($HTTP_GET_VARS[$name]))
  53                 $v=$HTTP_GET_VARS[$name];
  54         else if (isset($HTTP_POST_VARS[$name]))
  55                 $v=$HTTP_POST_VARS[$name];
  56         else
  57                 unset($v);
  58
  59         $name_html="Parametr <span class=\"quote\">".htmlspecialchars($name)."</span>";
  60
  61         $regex="^$regex\$";
  62         if (isset($v) && !ereg($regex,$v))
  63                 fatal("$name_html nevyhovuje po¾adovanému regexu <span class=\"quote\">".htmlspecialchars($regex)."</span>");
  64         if (!isset($v) && $require)
  65                 fatal("$name_html je vy¾adován");
  66
  67         if (!isset($v))
  68                 return(0);
  69
  70         $globals[$name]=$v;
  71         return($v);
  72 }
  73
  74 function db_connect()
  75 {
  76         global $db_host,$db_user,$db_pwd,$db_name;
  77         global $db_link;
  78
  79         if (isset($db_link))
  80                 return;
  81         if (!($db_link=mysql_connect($db_host,$db_user,$db_pwd)))
  82                 fatal("MySQL connect: ".mysql_error());
  83         if (!mysql_select_db($db_name,$db_link))
  84                 fatal("MySQL database select: ".mysql_error());
  85 }
  86
  87 function db_query($query)
  88 {
  89         global $db_link;
  90
  91         db_connect();
  92         if (!($r=mysql_query($query,$db_link)))
  93                 fatal("MySQL query \"$query\": ".mysql_error());
  94         return($r);
  95 }
  96
  97 function db_row($query)
  98 {
  99         $q=db_query($query);
 100         $r=mysql_fetch_row($q);
 101         mysql_free_result($q);
 102         return($r);
 103 }
 104
 105 function db_item($query)
 106 {
 107         $row=db_row($query);
 108         return($row[0]);
 109 }
 110
 111 function num2greg($num)
 112 {
 113         $r="";
 114         $vals=array(1=>"I",5=>"V",10=>"X",50=>"L",100=>"C",500=>"D",1000=>"M");
 115         krsort($vals,SORT_NUMERIC);
 116         foreach($vals as $val=>$sym) {
 117                 while ($num<0 && $num+$val<-$num) {
 118                         $r=substr($r,0,-1).$sym.substr($r,-1,1);
 119                         $num+=$val;
 120                         }
 121                 while (10*$num>=8*$val+(substr($val,0,1)=="1")) {
 122                         $r=$r.$sym;
 123                         $num-=$val;
 124                         }
 125                 }
 126         return($r);
 127 }
 128
 129 function month_a($year,$month,$month_last=0,$sequential=0)
 130 {
 131         global $tb_obsah,$obsah_year_base;
 132
 133         if (!$month_last || !$sequential)
 134                 list($month_last,$sequential)=db_row("select month_last,sequential from $tb_obsah where year='$year' and month='$month'");
 135         $month_full=sprintf("%02d".($month==$month_last ? "" : "-%02d"),$month,$month_last);
 136
 137         $r=array("year"=>$year,"month"=>$month,"month_last"=>$month_last,"month_full"=>$month_full,
 138                         "name"=>"$month"    .($month==$month_last ? "" : "-$month_last")."/$year",
 139                         "img" =>"img/eap-$year-${month_full}.jpeg",
 140                         "icon"=>"img/eap-$year-${month_full}s.jpeg",
 141                         );
 142         $r["name_full"]=$r["name"]
 143                         ." ($sequential".($month==$month_last ? "" : "-".($sequential+$month_last-$month)).")"
 144                         ." - ".num2greg($year-$obsah_year_base+1).". roèník";
 145         return($r);
 146 }
 147
 148 function img_size($width,$height)
 149 {
 150         return("style=\"border:0;width:${width}px;height:${height}px\" width=\"$width\" height=\"$height\"");
 151 }
 152
 153 function img($file,$alt,$attrs="")
 154 {
 155         list($width,$height)=getimagesize($file);
 156         return("<img src=\"$file\" alt=\"".htmlspecialchars($alt)."\" ".img_size($width,$height)
 157                         .($attrs=="" ? "" : " ".$attrs)." />");
 158 }
 159
 160 function gsm_banking()
 161 {
 162         return(img("img/sluzby_bankovni_pggsm.gif","Paegas GSM banking","class=\"img-align\""));
 163 }
 164
 165 function price_a()
 166 {
 167         if (!($f=fopen("objednavka.js","r")))
 168                 fatal("Nepodaøilo se naèíst seznam dostupného zbo¾í");
 169         $r=array();
 170         while (($s=fgets($f,0x1000))) {
 171                 if (!($s=trim($s)))
 172                         break;
 173                 if (!(ereg("^want_price\\[ *'([^']*)'\\]=([0-9]*);$",$s,$matched)))
 174                         continue;
 175                 $r[$matched[1]]=$matched[2];
 176                 }
 177         fclose($f);
 178         return($r);
 179 }
 180
 181 function title_name($year,$month)
 182 {
 183              if (isset($year) && isset($month)) {
 184                 $month_a=month_a($year,$month);
 185                 return("Èíslo ".$month_a["name_full"]);
 186                 }
 187         else if (isset($year))
 188                 return("Roèník $year");
 189         else
 190                 return("V¹echny roèníky");
 191 }
 192
 193 function title_month($year,$month)
 194 {
 195   $month_a=month_a($year,$month);
 196         return(""
 197                         ."<table border=\"0\" width=\"100%\">\n"
 198                         ."<tr><td align=\"center\"><table border=\"1\" cellpadding=\"10\">\n"
 199                         ."<tr><td align=\"center\">".img($month_a["img"],"titulní stránka ".$month_a["name"])."</td></tr>\n"
 200                         ."</table></td></tr>\n"
 201                         ."</table>\n"
 202                         );
 203 }
 204
 205 function title_icons_table_month($year,$month,$month_last,$sequential)
 206 {
 207         $month_a=month_a($year,$month,$month_last,$sequential);
 208         print("<a href=\"title.php?year=$year&amp;month=$month\">"
 209                                 .img($month_a["icon"],"titulní stránka ".$month_a["name_full"])."</a><br />"
 210                         ."<a href=\"obsah.php?year=$year&amp;month=$month\">obsah ".$month_a["name"]."</a>"
 211                         );
 212 }
 213
 214 function title_icons($year,$month)
 215 {
 216         global $tb_obsah;
 217
 218         print("<h2>"
 219                 .(isset($year) ? "<a name=\"year_$year\">" : "")
 220                 .title_name(&$year,&$month)
 221                 .(isset($year) ? "</a>" : "")
 222                 ."</h2>\n");
 223
 224         $result=db_query("select year,month,month_last,sequential from $tb_obsah"
 225                         .(isset($year) || isset($month) ? " where" : "")
 226                         .(isset($year ) ? " year=$year"   : "")
 227                         .(isset($year) && isset($month) ? " and" : "")
 228                         .(isset($month) ?   " month=$month" : "")
 229                         ." order by year,month");
 230         $split=6;
 231
 232         // $year variable changes its meaning here!!!
 233         if (isset($year))
 234                 $wanted_year=$year;
 235         $year=0;
 236
 237         $fin_split="";
 238         $fin_year="";
 239         while ($row=mysql_fetch_array($result)) {
 240                 $row["month"     ]--;
 241                 $row["month_last"]--;
 242
 243                 if ($row["year"]!=$year) {
 244                         print($fin_split.$fin_year);
 245
 246                         $year=$row["year"];
 247                         print(""
 248                                         .(!isset($wanted_year) ? "<p><a name=\"year_$year\">&nbsp;</a></p>" : "")
 249                                         ."<table border=\"0\" width=\"100%\"><tr><td align=\"center\"><table border=\"1\" cellpadding=\"5\">\n"
 250                                         ."<tr><th colspan=\"$split\">Roèník $year (<a href=\"obsah.php?year=$year\">obsahy èísel</a>)</th></tr>\n"
 251                                         );
 252                         $fin_year="</table></td></tr></table>\n";
 253                         $fin_split="";
 254                         $month=-1;
 255                         $floor=-1;
 256                         }
 257                 while ($floor<floor($row["month"]/$split)) {
 258                         print($fin_split."<tr>");
 259                         $fin_split="</tr>\n";
 260                         $floor++;
 261                         $month=$floor*$split-1;
 262                         }
 263                 while ($month+1<$row["month"]) {
 264                         print("<td></td>");
 265                         $month++;
 266                         }
 267                 print("<td align=\"center\""
 268                                 .($row["month_last"]!=$row["month"] ? " colspan=\"".($row["month_last"]+1-$row["month"])."\"" : "")
 269                                 .">");
 270                 title_icons_table_month($year,$row["month"]+1,$row["month_last"]+1,$row["sequential"]);
 271                 print("</td>\n");
 272                 $month=$row["month_last"];
 273                 }
 274         mysql_free_result($result);
 275         print($fin_split.$fin_year);
 276 }
 277
 278 function title($year,$month)
 279 {
 280         if (isset($year) && isset($month))
 281                 return(title_month( $year, $month));
 282         else
 283                 return(title_icons(&$year,&$month));
 284 }
 285
 286 function image_supported($mime)
 287 {
 288         global $HTTP_SERVER_VARS;
 289
 290         if (!isset($HTTP_SERVER_VARS["HTTP_ACCEPT"]))
 291                 return(false);
 292         $exp=explode(",",$HTTP_SERVER_VARS["HTTP_ACCEPT"]);
 293         while (($s=array_shift($exp))) {
 294                 $s=trim(ereg_replace(";.*","",$s));
 295                 if ($s==$mime)
 296                         return(true);
 297                 }
 298         return(false);
 299 }
 300
 301 function footer()
 302 {
 303         // deadlock prevention:
 304         global $footer_passed;
 305         if (isset($footer_passed))
 306                 exit();
 307         $footer_passed=true;
 308
 309         global $cvs_id_html,$viewcvs,$viewcvs,$HTTP_SERVER_VARS;
 310         ?>
 311 <p>&nbsp;</p>
 312 <hr />
 313 <table border="0" width="100%">
 314 <tr><td align="left"><span class="cvs-id"><?php print($cvs_id_html); ?></span></td><td align="right"><a
 315         href="http://validator.w3.org/check/referer"><img src="http://www.w3.org/Icons/valid-xhtml10"
 316                 <?php print(img_size(88,31)); ?> alt="Valid XHTML 1.0!" /></a><a
 317         href="http://jigsaw.w3.org/css-validator/validator?warning=2&amp;profile=css2&amp;uri=<?php
 318                 print(addpercents("http://".$HTTP_SERVER_VARS["HTTP_HOST"].$HTTP_SERVER_VARS["REQUEST_URI"]));
 319                 ?>"><img src="http://jigsaw.w3.org/css-validator/images/vcss"
 320                 <?php print(img_size(88,31)); ?> alt="Valid CSS!" /></a></td></tr>
 321 </table>
 322 </body></html>
 323         <?php
 324         exit();
 325 }
 326
 327 // Stolen from: php-manual.html#function.header
 328 function no_cache()
 329 {
 330         header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");          // Date in the past
 331         header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT"); // always modified
 332         header("Cache-Control: no-cache, must-revalidate");        // HTTP/1.1
 333         header("Pragma: no-cache");                                // HTTP/1.0
 334 }
 335
 336 function heading()
 337 {
 338         global $msie_major,$mozilla_major,$title_tail,$head_css,$head;
 339
 340         header("Content-type: text/html; charset=iso-8859-2");
 341         if (!isset($msie_major) || $msie_major>=4)
 342                 print('<?xml version="1.0" encoding="iso-8859-2"?>'."\n");
 343 ?>
 344 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 345 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="cs" lang="cs">
 346 <head><title>Energie &amp; peníze<?php
 347         if (isset($title_tail))
 348                 print(": $title_tail");
 349 ?></title>
 350 <style type="text/css"><!--
 351 .cvs-id  { font-family: monospace; }
 352 .error   { color: red;    background-color: transparent; }
 353 .quote   { font-family: monospace; }
 354 body {
 355                 background-color: black;
 356                 color: white;
 357                 }
 358 :link    { color: aqua;   background-color: transparent; }
 359 :visited { color: teal;   background-color: transparent; }
 360 h1,h2    { color: yellow; background-color: transparent; }
 361 <?php
 362         if (isset($head_css))
 363                 print(trim($head_css)."\n");
 364         print("--></style>\n");
 365         if (isset($head))
 366                 print($head);
 367         print("</head><body");
 368         if (isset($mozilla_major) && $mozilla_major==4)
 369                 print(" bgcolor=\"black\" text=\"white\" link=\"cyan\" vlink=\"teal\"");
 370         print(">\n");
 371 }
 372 ?>