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);
}
Task IConfigurableComponent.UnconfigureAsync(ConfigurationTarget target)
{
string helperKey = $"{Constants.GitConfiguration.Credential.SectionName}.{Constants.GitConfiguration.Credential.Helper}";
string appPath = GetGitConfigAppPath();
GitConfigurationLevel configLevel = target == ConfigurationTarget.System
? GitConfigurationLevel.System
: GitConfigurationLevel.Global;
Context.Trace.WriteLine($"Unconfiguring 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)
//
// We should remove the {appPath} entry, and any blank entries immediately preceding IFF there are no more entries following.
//
Context.Trace.WriteLine("Removing Git credential helper configuration...");
string[] currentValues = config.GetAll(helperKey).ToArray();
int appIndex = Array.FindIndex(currentValues, x => Context.FileSystem.IsSamePath(x, appPath));
if (appIndex > -1)
{
// Check for the presence of a blank entry immediately preceding an app entry in the last position
if (appIndex > 0 && appIndex == currentValues.Length - 1 &&
string.IsNullOrWhiteSpace(currentValues[appIndex - 1]))
{
// Clear the blank entry
config.UnsetAll(helperKey, Constants.RegexPatterns.Empty);
}
// Clear app entry
config.UnsetAll(helperKey, Regex.Escape(appPath));
}
return(Task.CompletedTask);
}
public Task UnconfigureAsync(ConfigurationTarget target)
{
string helperKey = $"{Constants.GitConfiguration.Credential.SectionName}.{Constants.GitConfiguration.Credential.Helper}";
string useHttpPathKey = $"{KnownGitCfg.Credential.SectionName}.https://dev.azure.com.{KnownGitCfg.Credential.UseHttpPath}";
_context.Trace.WriteLine("Clearing Git configuration 'credential.useHttpPath' for https://dev.azure.com...");
GitConfigurationLevel configurationLevel = target == ConfigurationTarget.System
? GitConfigurationLevel.System
: GitConfigurationLevel.Global;
IGitConfiguration targetConfig = _context.Git.GetConfiguration();
// On Windows, if there is a "manager-core" entry remaining in the system config then we must not clear
// the useHttpPath option otherwise this would break the bundled version of GCM in Git for Windows.
if (!PlatformUtils.IsWindows() || target != ConfigurationTarget.System ||
targetConfig.GetAll(helperKey).All(x => !string.Equals(x, "manager-core")))
{
targetConfig.Unset(configurationLevel, useHttpPathKey);
}
return(Task.CompletedTask);
}
