internal static async Task CheckForUpdate(bool updateOverride = false)
{
string oldExeFile = ExecutableFile + ".old";
// We booted successfully so we can now remove old exe file
if (File.Exists(oldExeFile))
{
// It's entirely possible that old process is still running, allow at least a second before trying to remove the file
await Utilities.SleepAsync(1000).ConfigureAwait(false);
try {
File.Delete(oldExeFile);
} catch (Exception e) {
Logging.LogGenericException(e);
Logging.LogGenericError("Could not remove old ASF binary, please remove " + oldExeFile + " manually in order for update function to work!");
}
}
if (GlobalConfig.UpdateChannel == GlobalConfig.EUpdateChannel.Unknown)
{
return;
}
string releaseURL = GithubReleaseURL;
if (GlobalConfig.UpdateChannel == GlobalConfig.EUpdateChannel.Stable)
{
releaseURL += "/latest";
}
string response = null;
Logging.LogGenericInfo("Checking new version...");
for (byte i = 0; (i < WebBrowser.MaxRetries) && string.IsNullOrEmpty(response); i++)
{
response = await WebBrowser.UrlGetToContent(releaseURL).ConfigureAwait(false);
}
if (string.IsNullOrEmpty(response))
{
Logging.LogGenericWarning("Could not check latest version!");
return;
}
GitHub.ReleaseResponse releaseResponse;
if (GlobalConfig.UpdateChannel == GlobalConfig.EUpdateChannel.Stable)
{
try {
releaseResponse = JsonConvert.DeserializeObject <GitHub.ReleaseResponse>(response);
} catch (JsonException e) {
Logging.LogGenericException(e);
return;
}
}
else
{
List <GitHub.ReleaseResponse> releases;
try {
releases = JsonConvert.DeserializeObject <List <GitHub.ReleaseResponse> >(response);
} catch (JsonException e) {
Logging.LogGenericException(e);
return;
}
if ((releases == null) || (releases.Count == 0))
{
Logging.LogGenericWarning("Could not check latest version!");
return;
}
releaseResponse = releases[0];
}
if (string.IsNullOrEmpty(releaseResponse.Tag))
{
Logging.LogGenericWarning("Could not check latest version!");
return;
}
Version newVersion = new Version(releaseResponse.Tag);
Logging.LogGenericInfo("Local version: " + Version + " | Remote version: " + newVersion);
if (Version.CompareTo(newVersion) >= 0) // If local version is the same or newer than remote version
{
if ((AutoUpdatesTimer != null) || !GlobalConfig.AutoUpdates)
{
return;
}
Logging.LogGenericInfo("ASF will automatically check for new versions every 24 hours");
AutoUpdatesTimer = new Timer(
async e => await CheckForUpdate().ConfigureAwait(false),
null,
TimeSpan.FromDays(1), // Delay
TimeSpan.FromDays(1) // Period
);
return;
}
if (!updateOverride && !GlobalConfig.AutoUpdates)
{
Logging.LogGenericInfo("New version is available!");
Logging.LogGenericInfo("Consider updating yourself!");
await Utilities.SleepAsync(5000).ConfigureAwait(false);
return;
}
if (File.Exists(oldExeFile))
{
Logging.LogGenericWarning("Refusing to proceed with auto update as old " + oldExeFile + " binary could not be removed, please remove it manually");
return;
}
// Auto update logic starts here
if (releaseResponse.Assets == null)
{
Logging.LogGenericWarning("Could not proceed with update because that version doesn't include assets!");
return;
}
GitHub.ReleaseResponse.Asset binaryAsset = releaseResponse.Assets.FirstOrDefault(asset => !string.IsNullOrEmpty(asset.Name) && asset.Name.Equals(ExecutableName, StringComparison.OrdinalIgnoreCase));
if (binaryAsset == null)
{
Logging.LogGenericWarning("Could not proceed with update because there is no asset that relates to currently running binary!");
return;
}
if (string.IsNullOrEmpty(binaryAsset.DownloadURL))
{
Logging.LogGenericWarning("Could not proceed with update because download URL is empty!");
return;
}
byte[] result = null;
for (byte i = 0; (i < WebBrowser.MaxRetries) && (result == null); i++)
{
Logging.LogGenericInfo("Downloading new version...");
result = await WebBrowser.UrlGetToBytes(binaryAsset.DownloadURL).ConfigureAwait(false);
}
if (result == null)
{
Logging.LogGenericWTF("Request failed even after " + WebBrowser.MaxRetries + " tries");
return;
}
string newExeFile = ExecutableFile + ".new";
// Firstly we create new exec
try {
File.WriteAllBytes(newExeFile, result);
} catch (Exception e) {
Logging.LogGenericException(e);
return;
}
// Now we move current -> old
try {
File.Move(ExecutableFile, oldExeFile);
} catch (Exception e) {
Logging.LogGenericException(e);
try {
// Cleanup
File.Delete(newExeFile);
} catch {
// Ignored
}
return;
}
// Now we move new -> current
try {
File.Move(newExeFile, ExecutableFile);
} catch (Exception e) {
Logging.LogGenericException(e);
try {
// Cleanup
File.Move(oldExeFile, ExecutableFile);
File.Delete(newExeFile);
} catch {
// Ignored
}
return;
}
Logging.LogGenericInfo("Update process finished!");
if (GlobalConfig.AutoRestart)
{
Logging.LogGenericInfo("Restarting...");
await Utilities.SleepAsync(5000).ConfigureAwait(false);
Restart();
}
else
{
Logging.LogGenericInfo("Exiting...");
await Utilities.SleepAsync(5000).ConfigureAwait(false);
Exit();
}
}