Task IConfigurableComponent.ConfigureAsync(ConfigurationTarget target)
{
string helperKey = $"{Constants.GitConfiguration.Credential.SectionName}.{Constants.GitConfiguration.Credential.Helper}";
string appPath = GetGitConfigAppPath();
GitConfigurationLevel configLevel = target == ConfigurationTarget.System
? GitConfigurationLevel.System
: GitConfigurationLevel.Global;
Context.Trace.WriteLine($"Configuring for config level '{configLevel}'.");
IGitConfiguration config = Context.Git.GetConfiguration(configLevel);
// We are looking for the following to be set in the config:
//
// [credential]
// ... # any number of helper entries (possibly none)
// helper = # an empty value to reset/clear any previous entries (if applicable)
// helper = {appPath} # the expected executable value & directly following the empty value
// ... # any number of helper entries (possibly none, but not the empty value '')
//
string[] currentValues = config.GetAll(helperKey).ToArray();
// Try to locate an existing app entry with a blank reset/clear entry immediately preceding,
// and no other blank empty/clear entries following (which effectively disable us).
int appIndex = Array.FindIndex(currentValues, x => Context.FileSystem.IsSamePath(x, appPath));
int lastEmptyIndex = Array.FindLastIndex(currentValues, string.IsNullOrWhiteSpace);
if (appIndex > 0 && string.IsNullOrWhiteSpace(currentValues[appIndex - 1]) && lastEmptyIndex < appIndex)
{
Context.Trace.WriteLine("Credential helper configuration is already set correctly.");
}
else
{
Context.Trace.WriteLine("Updating Git credential helper configuration...");
// Clear any existing app entries in the configuration
config.UnsetAll(helperKey, Regex.Escape(appPath));
// Add an empty value for `credential.helper`, which has the effect of clearing any helper value
// from any lower-level Git configuration, then add a second value which is the actual executable path.
config.Add(helperKey, string.Empty);
config.Add(helperKey, appPath);
}
return(Task.CompletedTask);
}
