private async Task <JudgeResult> RestoreGitRepositoryAsync()
{
int result;
string message;
result = await _box.ExecuteAsync(
"/usr/bin/git rev-list --count HEAD",
bind : new[] { "/etc" },
chroot : "jail",
stdout : "git_output",
proc : 5,
time : 3.0f,
memory : 512000
);
if (result != 0)
{
return(JudgeResult.NewRejectedResult("Submitted archive does not contain a git repository."));
}
if (int.TryParse(await _box.ReadFileAsync("git_output"), out var count))
{
message = $"Found {count} traced git commits.\n";
}
else
{
return(JudgeResult.NewFailedResult("E: Failed to parse result of `git rev-list --count HEAD`."));
}
result = await _box.ExecuteAsync(
"/usr/bin/git reset --hard HEAD",
bind : new[] { "/etc" },
chroot : "jail",
stdout : "git_output",
proc : 5,
time : 3.0f,
memory : 512000
);
if (result != 0)
{
return(JudgeResult.NewRejectedResult("E: Cannot restore git repository to last commit."));
}
var version = await _box.ReadFileAsync("git_output");
if (version.Length < 14)
{
return(JudgeResult.NewFailedResult("E: Failed to parse result of `git reset --hard HEAD`."));
}
return(new JudgeResult
{
Verdict = Verdict.Accepted,
Time = null,
Memory = null,
Score = 0,
Message = message + $"Restored repository to commit {version.Substring(15, 7)}."
});
}
private async Task <JudgeResult> ExtractAsync()
{
try
{
var filename = Encoding.UTF8.GetString(Convert.FromBase64String(_submission.Program.Code));
var archive = Path.Combine(DataPath, "submissions", _submission.Id.ToString(), filename);
await Task.Run(() => ZipFile.ExtractToDirectory(archive, Path.Combine(Root, "extract")));
}
catch (FileNotFoundException)
{
return(JudgeResult.NewFailedResult("E: Could not find submission archive on server. Is it deleted?"));
}
catch (InvalidDataException)
{
return(JudgeResult.NewRejectedResult("E: The zip archive is corrupted and cannot be extracted."));
}
catch (Exception e)
{
return(JudgeResult.NewFailedResult($"E: Failed to extract zip archive: {e.Message}"));
}
var info = new DirectoryInfo(Path.Combine(Root, "extract"));
var target = string.Empty;
if (info.GetDirectories().Any(d => d.Name.Equals(".git")))
{
target = Path.Combine(Root, "extract", ".git");
}
else if (info.GetDirectories().Length == 1)
{
var folder = info.GetDirectories()[0].Name;
target = Path.Combine(Root, "extract", folder, ".git");
if (!Directory.Exists(target))
{
return(JudgeResult.NewRejectedResult("E: Could not find git repository." +
$" There is no .git in folder {folder}."));
}
}
else
{
return(JudgeResult.NewRejectedResult("E: Could not find git repository." +
" There is none or more than one folders in zip archive."));
}
Directory.Move(target, Path.Combine(Jail, ".git"));
return(null);
}
