internal static async Task CheckForUpdate()
{
string oldExeFile = ExecutableFile + ".old";
// We booted successfully so we can now remove old exe file
if (File.Exists(oldExeFile))
{
try {
File.Delete(oldExeFile);
} catch (Exception e) {
Logging.LogGenericException(e);
return;
}
}
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)
{
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 (!GlobalConfig.AutoUpdates)
{
Logging.LogGenericInfo("New version is available!");
Logging.LogGenericInfo("Consider updating yourself!");
await Utilities.SleepAsync(5000).ConfigureAwait(false);
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.Asset binaryAsset = null;
foreach (var asset in releaseResponse.Assets)
{
if (string.IsNullOrEmpty(asset.Name) || !asset.Name.Equals(ExecutableName))
{
continue;
}
binaryAsset = asset;
break;
}
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;
}
Logging.LogGenericInfo("Downloading new version...");
Stream newExe = await WebBrowser.UrlGetToStream(binaryAsset.DownloadURL).ConfigureAwait(false);
if (newExe == null)
{
Logging.LogGenericWarning("Could not download new version!");
return;
}
// We start deep update logic here
string newExeFile = ExecutableFile + ".new";
// Firstly we create new exec
try {
using (FileStream fileStream = File.Open(newExeFile, FileMode.Create)) {
await newExe.CopyToAsync(fileStream).ConfigureAwait(false);
}
} 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 { }
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 { }
return;
}
Logging.LogGenericInfo("Update process is finished! ASF will now restart itself...");
await Utilities.SleepAsync(5000);
Restart();
}
