public static bool ValidateHash(IFileSystemProxy fileSystem, PaketHashFile hashFile, string version, string paketFile)
{
if (hashFile == null)
{
ConsoleImpl.WriteTrace("No hashFile file expected, bypassing check.");
return(true);
}
var dict = hashFile.Content
.Select(i => i.Split(' '))
.ToDictionary(i => i[1], i => i[0]);
string expectedHash;
if (!dict.TryGetValue("paket.exe", out expectedHash))
{
throw new InvalidDataException("Paket hashFile file is corrupted");
}
using (var stream = fileSystem.OpenRead(paketFile))
using (var sha = SHA256.Create())
{
byte[] checksum = sha.ComputeHash(stream);
var hash = BitConverter.ToString(checksum).Replace("-", String.Empty);
ConsoleImpl.WriteTrace("Expected hash = {0}", expectedHash);
ConsoleImpl.WriteTrace("paket.exe hash = {0} ({1})", hash, paketFile);
return(string.Equals(expectedHash, hash, StringComparison.OrdinalIgnoreCase));
}
}
public static void StartPaketBootstrapping(IDownloadStrategy downloadStrategy, DownloadArguments dlArgs, IFileSystemProxy fileSystemProxy, Action onSuccess)
{
Action <Exception> handleException = exception =>
{
#if DEBUG
Environment.ExitCode = 1;
ConsoleImpl.WriteError(String.Format("{0} ({1})", exception.ToString(), downloadStrategy.Name));
return;
#else
ConsoleImpl.WriteError(String.Format("{0} ({1})", exception.Message, downloadStrategy.Name));
if (!fileSystemProxy.FileExists(dlArgs.Target))
{
Environment.ExitCode = 1;
}
else
{
fileSystemProxy.WaitForFileFinished(dlArgs.Target);
onSuccess();
}
#endif
};
try
{
string versionRequested;
if (!dlArgs.IgnorePrerelease)
{
versionRequested = "prerelease requested";
}
else if (String.IsNullOrWhiteSpace(dlArgs.LatestVersion))
{
versionRequested = "downloading latest stable";
}
else
{
versionRequested = string.Format("version {0} requested", dlArgs.LatestVersion);
}
ConsoleImpl.WriteInfo("Checking Paket version ({0})...", versionRequested);
ConsoleImpl.WriteTrace("Target path is {0}", dlArgs.Target);
var localVersion = fileSystemProxy.GetLocalFileVersion(dlArgs.Target);
ConsoleImpl.WriteTrace("File in target path version: v{0}", string.IsNullOrEmpty(localVersion) ? "UNKNOWN" : localVersion);
var specificVersionRequested = true;
var latestVersion = dlArgs.LatestVersion;
if (latestVersion == string.Empty)
{
ConsoleImpl.WriteTrace("No version specified, checking online...");
var getLatestVersionWatch = Stopwatch.StartNew();
latestVersion = downloadStrategy.GetLatestVersion(dlArgs.IgnorePrerelease);
getLatestVersionWatch.Stop();
ConsoleImpl.WriteTrace("Latest version check found v{0} in {1:0.##} second(s)", latestVersion, getLatestVersionWatch.Elapsed.TotalSeconds);
specificVersionRequested = false;
}
if (dlArgs.DoSelfUpdate)
{
ConsoleImpl.WriteInfo("Trying self update");
downloadStrategy.SelfUpdate(latestVersion);
}
else
{
var currentSemVer = String.IsNullOrEmpty(localVersion) ? new SemVer() : SemVer.Create(localVersion);
if (currentSemVer.PreRelease != null && dlArgs.IgnorePrerelease)
{
currentSemVer = new SemVer();
}
var latestSemVer = SemVer.Create(latestVersion);
var comparison = currentSemVer.CompareTo(latestSemVer);
if ((comparison > 0 && specificVersionRequested) || comparison < 0)
{
PaketHashFile hashFile = null;
if (downloadStrategy.CanDownloadHashFile)
{
ConsoleImpl.WriteTrace("Downloading hash for v{0} ...", latestVersion);
var downloadHashWatch = Stopwatch.StartNew();
hashFile = downloadStrategy.DownloadHashFile(latestVersion);
downloadHashWatch.Stop();
ConsoleImpl.WriteTrace("Hash download took {0:0.##} second(s)", downloadHashWatch.Elapsed.TotalSeconds);
}
ConsoleImpl.WriteTrace("Downloading v{0} ...", latestVersion);
var downloadWatch = Stopwatch.StartNew();
downloadStrategy.DownloadVersion(latestVersion, dlArgs.Target, hashFile);
downloadWatch.Stop();
ConsoleImpl.WriteTrace("Download took {0:0.##} second(s)", downloadWatch.Elapsed.TotalSeconds);
ConsoleImpl.WriteInfo("Done in {0:0.##} second(s).", executionWatch.Elapsed.TotalSeconds);
}
else
{
ConsoleImpl.WriteInfo("Paket.exe {0} is up to date.", localVersion);
}
}
executionWatch.Stop();
ConsoleImpl.WriteTrace("Paket Bootstrapping took {0:0.##} second(s)", executionWatch.Elapsed.TotalSeconds);
onSuccess();
}
catch (WebException exn)
{
var shouldHandleException = true;
if (!fileSystemProxy.FileExists(dlArgs.Target))
{
if (downloadStrategy.FallbackStrategy != null)
{
var fallbackStrategy = downloadStrategy.FallbackStrategy;
ConsoleImpl.WriteInfo("'{0}' download failed. If using Mono, you may need to import trusted certificates using the 'mozroots' tool as none are contained by default. Trying fallback download from '{1}'.", downloadStrategy.Name, fallbackStrategy.Name);
StartPaketBootstrapping(fallbackStrategy, dlArgs, fileSystemProxy, onSuccess);
shouldHandleException = !fileSystemProxy.FileExists(dlArgs.Target);
}
}
if (shouldHandleException)
{
handleException(exn);
}
}
catch (Exception exn)
{
handleException(exn);
}
}
