/**
* creates queries to change problem set
* @param $problems new problems
* @param $contest_id contest id
* @return array() list of temporary files. NULL if the existing file was used
*/
function queriesToAdjustProblems($problems, $contest_id)
{
$prfx = DB_PREFIX;
$changed_probs = array();
//problems that will be changed by request
$temp_probs = array();
//find all contest problems
$prob2settings = array();
$res = Data::getRows(sprintf("SELECT * FROM {$prfx}problem WHERE contest_id=%s", Data::quote_smart($contest_id)));
while ($row = Data::getNextRow($res)) {
$prob2settings[$row['id']] = Data::_unserialize($row['contest_settings']);
}
$contest_pos = 1;
foreach ($problems as $p) {
$col_value = array();
//new problem must have 1) data 2) settings
//set contest id
$col_value['contest_id'] = $contest_id;
$col_value['contest_pos'] = $contest_pos++;
if ($p->id != -1 && !isset($prob2settings[$p->id])) {
throwBusinessLogicError(4);
}
//find problem file or make temporary if a new problem was sent
if ($p->problem) {
$problem_file = getTemporaryProblemFile();
@file_put_contents($problem_file, $p->problem) or throwServerProblem(200, 'failed to write problem file: ' . $problem_file);
$temp_probs[] = $problem_file;
} else {
if ($p->id < 0) {
throwBusinessLogicError(1);
}
$problem_file = getProblemFile($p->id);
$temp_probs[] = NULL;
}
$problem = new Problem($problem_file);
//get server plugin
//TODO improve security here
$plugin_alias = $problem->getServerPlugin();
require_once getServerPluginFile($plugin_alias);
$plugin = new $plugin_alias($problem);
//TODO consider calling updaters here instead of manual insertion of values
//TODO recheck all values if new plugin specified
$col_value['checker_columns'] = serialize($plugin->getColumnNames());
$col_value['result_columns'] = serialize(array());
//copy per contest settings
if ($p->settings) {
if ($p->id != -1) {
$new_settings = $prob2settings[$p->id];
copyValues($p->settings, $new_settings);
} else {
$new_settings = $p->settings;
}
$col_value['contest_settings'] = serialize($new_settings);
} else {
if ($p->id < 0) {
throwBusinessLogicError(1);
}
}
//query depends on whether we add or change a problem
if ($p->id == -1) {
Data::submitModificationQuery(Data::composeInsertQuery('problem', $col_value));
} else {
Data::submitModificationQuery(Data::composeUpdateQuery('problem', $col_value, "id='{$p->id}'"));
$changed_probs[$p->id] = 1;
}
}
//delete extra problems
foreach (array_keys($prob2settings) as $id) {
if (!isset($changed_probs[$id])) {
Data::submitModificationQuery("DELETE FROM {$prfx}problem WHERE id='{$id}'");
}
}
return $temp_probs;
}
function processSubmitSolutionRequest($request)
{
$prfx = DB_PREFIX;
//get user_id or die, if session is invalid
$userRow = RequestUtils::testSession($request->sessionID);
$user_id = $userRow['id'];
//authorize user for this operation
// get contest ID
$user_type = $userRow['user_type'];
//get problem row
$problem_row = Data::getRow(sprintf("SELECT * FROM {$prfx}problem WHERE id=%s", Data::quote_smart($request->problemID)));
if (!$problem_row) {
throwBusinessLogicError(4);
}
//get contest id of a problem
$problem_contest_id = $problem_row['contest_id'];
//test if we have rights to submit solution for the contest
$contest_id = RequestUtils::getRequestedContest($problem_contest_id, $userRow['contest_id'], $user_type);
if ($contest_id < 0) {
throwBusinessLogicError(0);
}
//get all settings
$contest_settings = Data::_unserialize($userRow['settings']);
//test submission time
$cur_time = getCurrentContestTime($contest_settings, DateMySQLToPHP($userRow['contest_start']), DateMySQLToPHP($userRow['contest_finish']));
if ($cur_time['interval'] === 'before') {
throwBusinessLogicError(19);
}
if ($cur_time['interval'] === 'after') {
throwBusinessLogicError(20);
}
$problem_settings = Data::_unserialize($problem_row['contest_settings']);
//test that not all submission attempts were used
$hist = Data::getRow(sprintf("SELECT COUNT(*) AS cnt FROM {$prfx}submission_history WHERE (problem_id=%s) AND (user_id=%s)", Data::quote_smart($request->problemID), Data::quote_smart($user_id)));
if ($hist >= getSetting($contest_settings->problemsDefaultSettings->sendCount, $problem_settings->sendCount)) {
throwBusinessLogicError(21);
}
//save submission result in history
$cur_php_time = getdate();
$col_value = array();
$col_value['problem_id'] = $request->problemID;
$col_value['user_id'] = $user_id;
$col_value['submission'] = serialize($request->problemResult);
$col_value['result'] = null;
//serialize($check_result);
$col_value['submission_time'] = DatePHPToMySQL($cur_php_time[0]);
//TODO implement asynchronous plugin
//get problem and create plugin
$problem = new Problem(getProblemFile($request->problemID));
$plugin_alias = $problem->getServerPlugin();
require_once getServerPluginFile();
require_once getServerPluginFile($plugin_alias);
$plugin = new $plugin_alias($problem);
//check solution
$last_result = $plugin->checkSolution(Data::getInsertedID(), $request->problemResult);
$col_value['result'] = serialize($last_result);
Data::submitModificationQuery(Data::composeInsertQuery('submission_history', $col_value));
//get result for result table and store in user
$all_results = Data::_unserialize($userRow['results']);
$user_result = ResultUtils::getUserResults($user_id, $request->problemID, getSetting($contest_settings->problemsDefaultSettings->tableResultChoice, $problem_settings->tableResultChoice), getSetting($contest_settings->problemsDefaultSettings->resultTransition, $problem_settings->resultTransition), $plugin, $last_result);
//update user result for results table
$all_results[$request->problemID] = $user_result;
Data::submitModificationQuery(Data::composeUpdateQuery('user', array('results' => serialize($all_results)), 'id=' . Data::quote_smart($user_id)));
//return submission result
$res = new AcceptedResponse();
return $res;
}
<?php
require_once getServerPluginFile();
require_once 'utils/Problem.php';
function processGetContestDataRequest($request)
{
$prfx = DB_PREFIX;
$is_anonymous = is_null($request->sessionID);
if (!$is_anonymous) {
//get user_id or die, if session is invalid
$userRow = RequestUtils::testSession($request->sessionID);
$user_id = $userRow['id'];
//authorize user for this operation
// get contest ID
$user_type = $userRow['user_type'];
//compare requested contest and user contest
$contest_id = RequestUtils::getRequestedContest($request->contestID, $userRow['contest_id'], $user_type);
} else {
$contest_id = $request->contestID;
}
if ($contest_id <= 0) {
throwBusinessLogicError(0);
}
//create response
$res = new GetContestDataResponse();
//fill contest description with data
//query db
$row = Data::getRow(sprintf("SELECT * FROM {$prfx}contest WHERE id=%s", Data::quote_smart($contest_id))) or throwBusinessLogicError(14);
//TODO remove this code duplication, the code is similar to AvailableContests.php
$c = Data::_unserialize($row['settings']);
$c->contestID = (int) $row['id'];