public async Task <InstanceDiscoveryMetadataEntry> GetMetadataEntryTryAvoidNetworkAsync(
AuthorityInfo authorityInfo,
IEnumerable <string> existingEnvironmentsInCache,
RequestContext requestContext)
{
string environment = authorityInfo.Host;
switch (authorityInfo.AuthorityType)
{
case AuthorityType.Aad:
return
(_userMetadataProvider?.GetMetadataOrThrow(environment, requestContext.Logger) ?? // if user provided metadata but entry is not found, fail fast
await _regionDiscoveryProvider.GetMetadataAsync(new Uri(authorityInfo.CanonicalAuthority), requestContext).ConfigureAwait(false) ??
_networkCacheMetadataProvider.GetMetadata(environment, requestContext.Logger) ??
_knownMetadataProvider.GetMetadata(environment, existingEnvironmentsInCache, requestContext.Logger) ??
await GetMetadataEntryAsync(authorityInfo, requestContext).ConfigureAwait(false));
case AuthorityType.Adfs:
case AuthorityType.B2C:
requestContext.Logger.Info("[Instance Discovery] Skipping Instance discovery for non-AAD authority. ");
return(await GetMetadataEntryAsync(authorityInfo, requestContext).ConfigureAwait(false));
default:
throw new InvalidOperationException("Unexpected authority type " + authorityInfo.AuthorityType);
}
}
public async Task <InstanceDiscoveryMetadataEntry> GetMetadataEntryTryAvoidNetworkAsync(
AuthorityInfo authorityInfo,
IEnumerable <string> existingEnvironmentsInCache,
RequestContext requestContext)
{
string environment = authorityInfo.Host;
if (authorityInfo.IsInstanceDiscoverySupported)
{
return
(_userMetadataProvider?.GetMetadataOrThrow(environment, requestContext.Logger) ?? // if user provided metadata but entry is not found, fail fast
await _regionDiscoveryProvider.GetMetadataAsync(new Uri(authorityInfo.CanonicalAuthority), requestContext).ConfigureAwait(false) ??
_networkCacheMetadataProvider.GetMetadata(environment, requestContext.Logger) ??
_knownMetadataProvider.GetMetadata(environment, existingEnvironmentsInCache, requestContext.Logger) ??
await GetMetadataEntryAsync(authorityInfo, requestContext).ConfigureAwait(false));
}
else
{
requestContext.Logger.Info($"Skipping Instance discovery for {authorityInfo.AuthorityType} authority");
return(await GetMetadataEntryAsync(authorityInfo, requestContext).ConfigureAwait(false));
}
}
public async Task <InstanceDiscoveryMetadataEntry> GetMetadataEntryAsync(
string authority,
RequestContext requestContext)
{
var autoDetectRegion = requestContext.ServiceBundle.Config.AuthorityInfo.AutoDetectRegion;
if (autoDetectRegion)
{
return(await _regionDiscoveryProvider.GetMetadataAsync(new Uri(authority), requestContext).ConfigureAwait(false));
}
AuthorityType type = Authority.GetAuthorityType(authority);
Uri authorityUri = new Uri(authority);
string environment = authorityUri.Host;
switch (type)
{
case AuthorityType.Aad:
InstanceDiscoveryMetadataEntry entry =
_userMetadataProvider?.GetMetadataOrThrow(environment, requestContext.Logger) ?? // if user provided metadata but entry is not found, fail fast
await FetchNetworkMetadataOrFallbackAsync(requestContext, authorityUri).ConfigureAwait(false);
if (entry == null)
{
string message = "[Instance Discovery] Instance metadata for this authority could neither be fetched nor found. MSAL will continue regardless. SSO might be broken if authority aliases exist. ";
requestContext.Logger.WarningPii(message + "Authority: " + authority, message);
entry = CreateEntryForSingleAuthority(authorityUri);
}
return(entry);
// ADFS and B2C do not support instance discovery
case AuthorityType.Adfs:
case AuthorityType.B2C:
requestContext.Logger.Info("[Instance Discovery] Skipping Instance discovery for non-AAD authority. ");
return(CreateEntryForSingleAuthority(authorityUri));
default:
throw new InvalidOperationException("Unexpected authority type " + type);
}
}
public async Task SuccessfulResponseFromEnvironmentVariableAsync()
{
Environment.SetEnvironmentVariable(TestConstants.RegionName, TestConstants.Region);
_testRequestContext.ServiceBundle.Config.AzureRegion = null; // not configured
InstanceDiscoveryMetadataEntry regionalMetadata = await _regionDiscoveryProvider.GetMetadataAsync(
new Uri("https://login.microsoftonline.com/common/"), _testRequestContext)
.ConfigureAwait(false);
Assert.IsNull(regionalMetadata);
}
