<?
//
// Nothing to touch after this, mostly
//
$errorSet = FALSE;
$errorMsg = "";

function stError($msg)
{
  global $errorSet, $errorMsg;
  $errorSet = TRUE;
  $errorMsg .= "<li>".$msg."</li>\n";
}


function stCheckHTTPS()
{
  return isset($_SERVER["HTTPS"]) && ($_SERVER["HTTPS"] != "" && $_SERVER["HTTPS"] != "off");
}


function stAuthSession()
{
  if (@session_start() === TRUE && isset($_SESSION["admpass"]) &&
      $_SESSION["admpass"] == stGetSetting("admpass", FALSE))
  {
    // Check for session expiration
    if (!isset($_SESSION["expires"]) || $_SESSION["expires"] < time())
      return FALSE;

    // Add more time to expiration
    $_SESSION["expires"] = time() + stGetSetting("admtimeout", 5 * 60);
    return TRUE;
  }
  else
    return FALSE;
}


function stStartSession()
{
  if (@session_start() === TRUE)
  {
    $_SESSION["admpass"] = stGetSetting("admpass", FALSE);
    $_SESSION["expires"] = time() + stGetSetting("admtimeout", 5 * 60);
    return TRUE;
  }
  else
    return FALSE;
}


function stEndSession()
{
  $ok = stAuthSession();
  $_SESSION = array();
  if (ini_get("session.use_cookies"))
  {
    $params = session_get_cookie_params();
    setcookie(session_name(), "", time() - 242000,
      $params["path"], $params["domain"],
      $params["secure"], $params["httponly"]
    );
  }
  @session_destroy();
  return $ok;
}


function stGetSetting($name, $default)
{
  global $siteSettings;
  if (isset($siteSettings[$name]))
    return $siteSettings[$name];
  else
    return $default;
}


function stChkSetting($name)
{
  global $siteSettings;
  return isset($siteSettings[$name]) && $siteSettings[$name];
}


function stSpecURL($id)
{
  global $specURLs;
  if (isset($specURLs[$id]))
    return "<a href=\"".$specURLs[$id][0]."\">".$specURLs[$id][1]."</a>";
  else
    return "";
}


function stPrintSpecURL($id)
{
  echo stSpecURL($id);
}


function dhentities($str)
{
  return str_replace(array("&lt;","&gt;"), array("<", ">"), htmlentities($str, ENT_NOQUOTES, "UTF-8"));
}


function chentities($str)
{
  return htmlentities($str, ENT_NOQUOTES, "UTF-8");
}


function stGetFormCheckBoxInput($name, $id, $prefix, $checked, $label, $extra = "")
{
  return
    "<input ".$extra." type=\"checkbox\" id=\"".$prefix.$name.$id."\" ".
    "name=\"".$prefix.$name.$id."\" ".($checked ? "checked=\"checked\" " : "")." />".
    "<label for=\"".$prefix.$name.$id."\">".$label."</label>";
}


function stGetFormButtonInput($name, $id, $prefix, $label, $onclick = "")
{
  return
    "<input type=\"button\" id=\"".$prefix.$name.$id."\" ".
    "name=\"".$name."\" value=\"".$label."\" ".
    ($onclick != "" ? "onClick=\"".$onclick."\"" : "")." />";
}


function stGetFormTextArea($rows, $cols, $name, $id, $prefix, $value, $extra = "")
{
  return
    "<textarea ".$extra." id=\"".$prefix.$name.$id."\" ".
    "name=\"".$name."\" rows=\"".$rows."\" cols=\"".$cols."\">".
    (isset($value) ? chentities($value) : "").
    "</textarea>";
}


function stGetFormTextInput($size, $len, $name, $id, $prefix, $value, $extra = "")
{
  return
    "<input ".$extra." type=\"text\" id=\"".$prefix.$name.$id."\" ".
    "name=\"".$name."\" size=\"".$size."\" maxlength=\"".$len."\"".
    (isset($value) ? " value=\"".chentities($value)."\"" : "").
    " />";
}


function stGetFormPasswordInput($name, $id, $prefix)
{
  return
    "<input type=\"password\" id=\"".$prefix.$name.$id.
    "\" name=\"".$name."\" />";
}


function stGetFormHiddenInput($name, $value)
{
  return "<input type=\"hidden\" name=\"".$name."\" value=\"".chentities($value)."\" />";
}


function stGetTDEditTextItem($edit, $size, $len, $name, $id, $prefix, $value, $extra = "")
{
  return
    "<td class=\"".$name."\">".
    ($edit ? stGetFormTextInput($size, $len, $name, $id, $prefix, $value, $extra) : chentities($value)).
    "</td>";
}


function stPrintFormTextInput($text1, $text2, $size, $len, $name, $extra="")
{
  echo "  <tr><th>".chentities($text1)."</th><td>".
    stGetFormTextInput($size, $len, $name, "", "", $_REQUEST[$name], $extra).
    "</td><td>".chentities($text2)."</td></tr>\n";
}


function stPrintFormHiddenInput($name, $value)
{
  echo " ".stGetFormHiddenInput($name, $value)."\n";
}


function stPrintAttendee($item, $row, $edit, $eclass = "")
{
  $id = $item["id"];
  $prefix = "at";
  echo "  ".
    "<tr class=\"".($row % 2 == 1 ? "rodd" : "reven").$eclass."\" id=\"attendee".$id."\">".
    stGetTDEditTextItem(FALSE, 20, 40, "name", $id, $prefix, $item["name"]).
    stGetTDEditTextItem(FALSE, 20, 40, "groups", $id, $prefix, $item["groups"]).
    "<td class=\"regtime\">".date("d M Y / H:i", $item["regtime"])."</td>".
    stGetTDEditTextItem($edit, 30, 64, "oneliner", $id, $prefix, $item["oneliner"], "autocomplete=\"off\"");

  if ($edit)
  {
    echo
      stGetTDEditTextItem($edit, 20, 40, "email", $id, $prefix, $item["email"], "autocomplete=\"off\"").
      "<td>".
      "<button class=\"button\" id=\"atupd".$id."\" type=\"button\" onclick=\"updateAttendee(".$id.")\">Update</button>".
      "<button class=\"button\" id=\"atdel".$id."\" type=\"button\" onclick=\"deleteAttendee(".$id.")\">Delete</button>".
      "</td>";
  }

  echo "</tr>\n";
}


function stPrintNewsItem($item, $edit = "")
{
  echo
  "<div class=\"newsitem\" id=\"news".$item["id"]."\">\n".
  "  <h2>".chentities($item["title"])."</h2>\n".
  "  <div class=\"text\">".dhentities($item["text"])."</div>\n".
  "  <div class=\"sig\">-- ".chentities($item["author"])."<br />".
    date("d M Y / H:i", $item["utime"]).
    $edit."</div>\n".
  "</div>\n";
}


function stChkDataItem($name)
{
  return !isset($_REQUEST[$name]) || strlen(trim($_REQUEST[$name])) < 1;
}


function stChkRequestItem($name)
{
  return isset($_REQUEST[$name]);
}


function stGetRequestItem($name, $default = "")
{
  return isset($_REQUEST[$name]) ? trim($_REQUEST[$name]) : $default;
}


function stGetDRequestItem($name, $default = "")
{
  return trim(urldecode(stGetRequestItem($name, $default)));
}


function stLogSQLError($sql)
{
  global $db;
  error_log("SQL error ".implode("; ", $db->errorInfo())." in statement \"".$sql."\"");
}


function stConnectSQLDB()
{
  global $db;
  try {
    $db = new PDO("sqlite:".stGetSetting("dbfilename", FALSE));
  }
  catch (PDOException $e) {
    error_log("Could not connect to SQL database: ".$e->getMessage().".");
    return FALSE;
  }
  return TRUE;
}


function stGetSQLParam($type, $value)
{
  global $db;
  switch ($type)
  {
    case "d":
      return intval($value);

    case "s":
      return $db->quote($value);

    case "D":
      return intval(stGetRequestItem($value));

    case "S":
      return $db->quote(stGetDRequestItem($value));

    case "Q":
      return $db->quote(stripslashes(stGetDRequestItem($value)));

    case "B":
      return intval(stGetRequestItem($value)) ? 1 : 0;
  }
}


function stPrepareSQL()
{
  $argc = func_num_args();
  $argv = func_get_args();
  if ($argc < 1)
  {
    error_log("Invalid stPrepareSQL() call, no arguments!");
    return FALSE;
  }
  
  $fmt = $argv[0];
  $len = strlen($fmt);
  $sql = "";
  $argn = 1;
  $pos = 0;
  while ($pos < $len)
  {
    if ($fmt[$pos] == "%")
    {
      if ($argn < $argc)
        $sql .= stGetSQLParam($fmt[++$pos], $argv[$argn++]);
      else
      {
        error_log("Invalid SQL statement format string '".$fmt.
          "', not enough parameters specified (".$argn." of ".$argc.")");
        return FALSE;
      }
    }
    else
      $sql .= $fmt[$pos];
    $pos++;
  }
  
  return $sql;
}


function stPrepareSQLUpdate($table, $cond, $pairs)
{
  $sql = array();
  foreach ($pairs as $name => $attr)
  {
    $sql[] = $name."=".stGetSQLParam($attr, $name);
  }
  return
    "UPDATE ".$table." SET ".implode(",", $sql).
    ($cond != "" ? " ".$cond : "");
}


function stExecSQL($sql)
{
  global $db;
  if (($res = $db->query($sql)) !== FALSE)
    return $res;
  else
  {
    stLogSQLError($sql);
    stError("Oh noes! SQL error #23!");
    return FALSE;
  }
}


function stFetchSQL($sql)
{
  global $db;
  if (($res = $db->query($sql)) !== FALSE)
  {
    return $res->fetch();
  }
  else
  {
    stLogSQLError($sql);
    stError("Oh noes! SQL error #31!");
    return FALSE;
  }
}


function stFetchSQLColumn($sql, $column = 0)
{
  global $db;
  if (($res = $db->query($sql)) !== FALSE)
  {
    return $res->fetchColumn($column);
  }
  else
  {
    stLogSQLError($sql);
    stError("Oh noes! SQL error #81!");
    return FALSE;
  }
}


function stGetCompoList($all)
{
  global $compos;

  // Get entries and competitions into an array structure
  $sql = "SELECT * FROM compos ".($all ? "" :"WHERE enabled<>0 ")."ORDER BY name DESC";
  foreach (stExecSQL($sql) as $compo)
  {
    $id = $compo["id"];

    $compos[$compo["id"]] = array(
      "name" => $compo["name"],
      "entries" => array()
    );

    $sql = stPrepareSQL("SELECT * FROM entries WHERE compo_id=%d", $id);
    foreach (stExecSQL($sql) as $entry)
    {
      $compos[$id]["entries"][$entry["id"]] = $entry;
    }
  }
}


function stConvSwitchMode(&$str, &$mode, $newMode)
{
  if ($newMode != $mode)
  {
    if ($mode != "")
      $str .= "\n</".$mode.">\n";

    $mode = $newMode;

    if ($mode != "")
      $str .= "<".$mode.">\n";
  }
}


function stConvertCompoDesc($desc)
{
  global $stDescConversion;
  $str = "";
  $mode = "";

  foreach (explode("\n", $desc) as $line)
  {
    if (preg_match("/^\s*\s*\*(.+)$/", $line, $m))
    {
      stConvSwitchMode($str, $mode, "ol");
      $str .= "<li>".$m[1]."</li>\n";
    }
    else
    if (preg_match("/^\s*-\s*(.+)$/", $line, $m))
    {
      stConvSwitchMode($str, $mode, "ul");
      $str .= "<li>".$m[1]."</li>\n";
    }
    else
    {
      stConvSwitchMode($str, $mode, "p");
      $str .= $line;
    }
  }

  stConvSwitchMode($str, $mode, "");

  return $str;
}

?>