lib/website.php

   1 <?php
   2
   3 /***************************************************************************
   4  *
   5  * Error handling functions
   6  *
   7  */
   8         function chksql($oSql, $sMsg = "Database request failed")
   9         {
  10                 if (!PEAR::isError($oSql)) return $oSql;
  11
  12                 header('HTTP/1.0 500 Internal Server Error');
  13                 header('Content-type: text/html; charset=utf-8');
  14
  15                 $sSqlError = $oSql->getMessage();
  16
  17                 echo <<<INTERNALFAIL
  18         <html>
  19           <head><title>Internal Server Error</title></head>
  20           <body>
  21                 <h1>Internal Server Error</h1>
  22                 <p>Nominatim has encountered an internal error while accessing the database.
  23                    This may happen because the database is broken or because of a bug in
  24                    the software. If you think it is a bug, feel free to report
  25                    it over on <a href="https://github.com/twain47/Nominatim/issues">
  26                    Github</a>. Please include the URL that caused the problem and the
  27                    complete error details below.</p>
  28                 <p><b>Message:</b> $sMsg</p>
  29                 <p><b>SQL Error:</b> $sSqlError</p>
  30                 <p><b>Details:</b> <pre>
  31 INTERNALFAIL;
  32
  33                 if (CONST_Debug)
  34                 {
  35                         var_dump($oSql);
  36                 }
  37                 else
  38                 {
  39                         echo "<pre>\n".$oSql->getUserInfo()."</pre>";
  40                 }
  41
  42                 echo "</pre></p></body></head></html>";
  43                 exit;
  44         }
  45
  46         function failInternalError($sError, $sSQL = false, $vDumpVar = false)
  47         {
  48                 header('HTTP/1.0 500 Internal Server Error');
  49                 header('Content-type: text/html; charset=utf-8');
  50                 echo "<html><body><h1>Internal Server Error</h1>";
  51                 echo '<p>Nominatim has encountered an internal error while processing your request. This is most likely because of a bug in the software.</p>';
  52                 echo "<p><b>Details:</b> ".$sError,"</p>";
  53                 echo '<p>Feel free to file an issue on <a href="https://github.com/twain47/Nominatim/issues">Github</a>. Please include the error message above and the URL you used.</p>';
  54                 if (CONST_Debug)
  55                 {
  56                         echo "<hr><h2>Debugging Information</h2><br>";
  57                         if ($sSQL)
  58                         {
  59                                 echo "<h3>SQL query</h3><code>".$sSQL."</code>";
  60                         }
  61                         if ($vDumpVar)
  62                         {
  63                                 echo "<h3>Result</h3> <code>";
  64                                 var_dump($vDumpVar);
  65                                 echo "</code>";
  66                         }
  67                 }
  68                 echo "\n</body></html>\n";
  69                 exit;
  70         }
  71
  72
  73         function userError($sError)
  74         {
  75                 header('HTTP/1.0 400 Bad Request');
  76                 header('Content-type: text/html; charset=utf-8');
  77                 echo "<html><body><h1>Bad Request</h1>";
  78                 echo '<p>Nominatim has encountered an error with your request.</p>';
  79                 echo "<p><b>Details:</b> ".$sError,"</p>";
  80                 echo '<p>If you feel this error is incorrect feel file an issue on <a href="https://github.com/twain47/Nominatim/issues">Github</a>. Please include the error message above and the URL you used.</p>';
  81                 echo "\n</body></html>\n";
  82                 exit;
  83         }
  84
  85
  86 /***************************************************************************
  87  *
  88  * Functions for parsing URL parameters
  89  *
  90  */
  91
  92         function getParamBool($sName, $bDefault=false)
  93         {
  94                 if (!isset($_GET[$sName])) return $bDefault;
  95
  96                 return (bool) $_GET[$sName];
  97         }
  98
  99         function getParamInt($sName, $bDefault=false)
 100         {
 101                 if (!isset($_GET[$sName])) return $bDefault;
 102
 103                 if (!preg_match('/^[+-]?[0-9]+$/', $_GET[$sName]))
 104                 {
 105                         userError("Integer number expected for parameter '$sName'");
 106                 }
 107
 108                 return (int) $_GET[$sName];
 109         }
 110
 111         function getParamFloat($sName, $bDefault=false)
 112         {
 113                 if (!isset($_GET[$sName])) return $bDefault;
 114
 115                 if (!preg_match('/^[+-]?[0-9]*\.?[0-9]+$/', $_GET[$sName]))
 116                 {
 117                         userError("Floating-point number expected for parameter '$sName'");
 118                 }
 119
 120                 return (float) $_GET[$sName];
 121         }
 122
 123         function getParamString($sName, $bDefault=false)
 124         {
 125                 if (!isset($_GET[$sName])) return $bDefault;
 126
 127                 return $_GET[$sName];
 128         }
 129
 130         function getParamSet($sName, $aValues, $sDefault=false)
 131         {
 132                 if (!isset($_GET[$sName])) return $sDefault;
 133
 134                 if (!in_array($_GET[$sName], $aValues))
 135                 {
 136                         userError("Parameter '$sName' must be one of: ".join(', ', $aValues));
 137                 }
 138
 139                 return $_GET[$sName];
 140         }