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Code Issues Releases Wiki Activity

fix errors in database interaction

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This commit is contained in:
sjaster 2017-05-31 17:53:02 +02:00
parent fe8a426334
commit 576d90f074
3 changed files with 45 additions and 13 deletions
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34
libs/keyLib.php
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@ -16,7 +16,7 @@
define ("KEYSTATE_ISSUED", "issued");
define ("KEYSTATE_ACTIVATED", "activated");
define ("KEYSTATE_USED", "used");
/**
* Generates a key from the specified hash value.
*
@ -55,6 +55,36 @@
* @param string $fileName The name of the key database that should be created.
*/
function CreateKeys($keyAmount, $fileName)
{
$handle = new SQLite3($fileName);
if (!$handle)
return false;
$handle->exec("DROP TABLE answers;");
$handle->exec("CREATE TABLE IF NOT EXISTS 'answers'(KeyId text primary key,Status text,Student int,Answer);");
$keys = GenerateKeys($keyAmount);
$count = count($keys);
for ($i = 0; $i < $count; $i++)
{
$stmt = $handle->prepare("INSERT INTO answers (KeyId, Status) VALUES (:key,:status);");
if ($stmt)
{
$stmt->bindValue(':key', $keys[$i], SQLITE3_TEXT);
$stmt->bindValue(':status', KEYSTATE_UNISSUED, SQLITE3_TEXT);
$result = $stmt->execute();
}
else
{
$handle->close();
return false;
}
}
$handle->close();
return true;
}
function AppendKeys($keyAmount, $fileName)
{
$handle = new SQLite3($fileName, SQLITE3_OPEN_READWRITE);
if (!$handle)
@ -186,7 +216,7 @@
return false;
//secure deleting by checking if key has been uesed already
$stmt = $handle->prepare("DELETE FROM answers WHERE KeyId=:keyid AND Answer!=NULL;");
$stmt = $handle->prepare("DELETE FROM answers WHERE KeyId=:keyid;");
if ($stmt)
{
$stmt->bindValue(':keyid', $key, SQLITE3_TEXT);