/// <summary>
/// Continue a promise chain by acting on the previous promise's result and returning a new promise
/// </summary>
/// <param name="promise">Previous promise</param>
/// <param name="callback">Code to execute on resolution of the promise and returning a new promise</param>
/// <returns>A new promise</returns>
public static IPromise <S> Continue <T, S>(this IPromise <T> promise, Func <T, IPromise <S> > callback)
{
var result = new Promise <S>();
result.CancelTarget(
promise
.Progress((p, m) => result.Notify(p / 50, m))
.Done(t =>
{
try
{
result.CancelTarget(callback(t)
.Progress((p, m) => result.Notify(50 + p / 50, m))
.Done(s => result.Resolve(s))
.Fail(exS => result.Reject(exS)));
}
catch (Exception ex)
{
result.Reject(ex);
}
}).Fail(exT => result.Reject(exT)));
return(result);
}
private static IPromise <T> ToHttpPromise <T>(this Task <T> task, TimeoutSource timeout, LogData trace)
{
var result = new Promise <T>();
result.CancelTarget(timeout);
task
.ContinueWith(t =>
{
if (t.IsFaulted)
{
Exception ex = t.Exception;
while (ex != null && ex.InnerException != null && ex.GetType().Name == "AggregateException")
{
ex = ex.InnerException;
}
if (ex != null)
{
foreach (var kvp in trace)
{
ex.Data[kvp.Key] = kvp.Value;
}
trace.Add("exception", ex);
}
result.Reject(ex);
}
else if (t.IsCanceled)
{
result.Reject(new HttpTimeoutException(string.Format("A response was not received after waiting for {0:m' minutes, 's' seconds'}", TimeSpan.FromMilliseconds(timeout.TimeoutDelay))));
}
else
{
result.Resolve(t.Result);
}
});
return(result);
}
/// <summary>
/// Asynchronously gets an HTTP connection to an innovator instance (or proxy) at the given URL
/// </summary>
/// <param name="preferences">Object containing preferences for the connection</param>
/// <param name="async">Whether or not to return the connection asynchronously. This is important
/// as an HTTP request must be issued to determine the type of connection to create</param>
/// <returns>A promise to return a connection object</returns>
public static IPromise <IRemoteConnection> GetConnection(ConnectionPreferences preferences, bool async)
{
preferences = preferences ?? new ConnectionPreferences();
var url = preferences.Url;
url = (url ?? "").TrimEnd('/');
if (url.EndsWith("Server/InnovatorServer.aspx", StringComparison.OrdinalIgnoreCase))
{
url = url.Substring(0, url.Length - 21);
}
if (!url.EndsWith("/server", StringComparison.OrdinalIgnoreCase))
{
url += "/Server";
}
var configUrl = url + "/mapping.xml";
var masterService = preferences.HttpService ?? DefaultService.Invoke();
var arasSerice = preferences.HttpService ?? DefaultService.Invoke();
Func <ServerMapping, IRemoteConnection> connFactory = m =>
{
var uri = (m.Url ?? "").TrimEnd('/');
if (!uri.EndsWith("/server", StringComparison.OrdinalIgnoreCase))
{
url += "/Server";
}
switch (m.Type)
{
case ServerType.Proxy:
throw new NotSupportedException();
default:
return(ArasConn(arasSerice, uri, preferences));
}
};
var result = new Promise <IRemoteConnection>();
var req = new HttpRequest();
req.UserAgent = preferences.Headers.UserAgent;
req.SetHeader("Accept", "text/xml");
foreach (var header in preferences.Headers.NonUserAgentHeaders())
{
req.SetHeader(header.Key, header.Value);
}
var trace = new LogData(4, "Innovator: Try to download mapping file", Factory.LogListener)
{
{ "url", configUrl },
};
result.CancelTarget(masterService.GetPromise(new Uri(configUrl), async, trace, req)
.Progress((p, m) => result.Notify(p, m))
.Done(r =>
{
var data = r.AsString();
if (string.IsNullOrEmpty(data))
{
result.Resolve(ArasConn(arasSerice, url, preferences));
}
else
{
try
{
var servers = ServerMapping.FromXml(data).ToArray();
if (servers.Length < 1)
{
result.Resolve(ArasConn(arasSerice, url, preferences));
}
else if (servers.Length == 1)
{
result.Resolve(connFactory(servers.Single()));
}
else
{
foreach (var server in servers)
{
server.Factory = connFactory;
}
result.Resolve(new MappedConnection(servers, preferences.AuthCallback));
}
}
catch (XmlException)
{
result.Resolve(ArasConn(arasSerice, url, preferences));
}
}
}).Fail(ex =>
{
result.Resolve(ArasConn(arasSerice, url, preferences));
})).Always(trace.Dispose);
if (preferences.Credentials != null)
{
IRemoteConnection conn = null;
return(result
.Continue(c =>
{
conn = c;
return c.Login(preferences.Credentials, async);
})
.Convert(u => conn));
}
return(result);
}
public static IPromise <IAuthenticator> GetAuthenticator(Uri innovatorServerBaseUrl, HttpClient service, ICredentials creds, bool async)
{
var discovery = new Uri(innovatorServerBaseUrl, "OAuthServerDiscovery.aspx");
var req = new HttpRequest();
req.Headers.Add("Aras-Set-HttpSessionState-Behavior", "switch_to_initial");
var oauthBaseUri = default(Uri);
var result = new Promise <IAuthenticator>();
result.CancelTarget(
service.GetPromise(discovery, async, new LogData(4
, "Innovator: Get OAuth URL"
, Factory.LogListener)
{
{ "url", discovery },
}, req)
.Continue(r =>
{
if (r.StatusCode != System.Net.HttpStatusCode.OK)
{
throw new Exception("OAuth not found");
}
var serverUrls = default(List <Uri>);
using (var json = new Json.Embed.JsonTextReader(r.AsStream))
{
serverUrls = json.Flatten()
.Where(k => k.Key.StartsWith("$.locations[") &&
k.Key.EndsWith("].uri") &&
k.Value is string str &&
!string.IsNullOrEmpty(str))
.Select(k => new Uri(k.Value.ToString()))
.OrderBy(u => string.Equals(u.Host, innovatorServerBaseUrl.Host, StringComparison.OrdinalIgnoreCase) ? 0 : 1)
.ToList();
}
if (serverUrls?.Count < 1)
{
throw new InvalidOperationException("OAuth server URL could not be found");
}
oauthBaseUri = serverUrls[0];
var oauthUri = new Uri(oauthBaseUri, ".well-known/openid-configuration");
return(service.GetPromise(oauthUri, async, new LogData(4
, "Innovator: Get OAuth Config"
, Factory.LogListener)
{
{ "url", oauthUri },
}));
})
.Progress(result.Notify)
.Done(r =>
{
var config = new OAuthConfig(r.AsStream, oauthBaseUri);
if (config.ProtocolVersion >= new Version("1.0"))
{
result.Resolve(new OAuthAuthenticator(service, config, creds));
}
else
{
result.Resolve(new LegacyAuthenticator(innovatorServerBaseUrl, creds));
}
})
.Fail(e =>
{
result.Resolve(new LegacyAuthenticator(innovatorServerBaseUrl, creds));
}));
return(result);
}
private IPromise <ICredentials> DefaultAuthCallback(INetCredentials netCred, string endpoint, bool async)
{
var promise = new Promise <ICredentials>();
if (string.IsNullOrEmpty(endpoint))
{
promise.Resolve(netCred);
}
else
{
var handler = new SyncClientHandler()
{
Credentials = netCred.Credentials,
PreAuthenticate = true
};
var http = new SyncHttpClient(handler);
var endpointUri = new Uri(endpoint + "?db=" + netCred.Database);
var trace = new LogData(4, "Innovator: Authenticate user via mapping", Factory.LogListener)
{
{ "database", netCred.Database },
{ "user_name", netCred.Credentials.GetCredential(endpointUri, null).UserName },
{ "url", endpointUri },
};
http.GetPromise(endpointUri, async, trace)
.Done(r =>
{
var res = r.AsXml().DescendantsAndSelf("Result").FirstOrDefault();
var user = res.Element("user").Value;
var pwd = res.Element("password").Value;
if (pwd.IsNullOrWhiteSpace())
{
promise.Reject(new ArgumentException("Failed to authenticate with Innovator server '" + endpoint + "'. Original error: " + user, "credentials"));
}
var needHash = !string.Equals(res.Element("hash").Value, "false", StringComparison.OrdinalIgnoreCase);
if (needHash)
{
promise.Resolve(new ExplicitCredentials(netCred.Database, user, pwd));
}
else
{
promise.Resolve(new ExplicitHashCredentials(netCred.Database, user, pwd));
}
}).Fail(ex =>
{
// Only hard fail for problems which aren't time outs and not found issues.
var webEx = ex as HttpException;
if (webEx != null && webEx.Response.StatusCode == HttpStatusCode.NotFound)
{
promise.Resolve(netCred);
}
else if (webEx != null && webEx.Response.StatusCode == HttpStatusCode.Unauthorized)
{
promise.Reject(ElementFactory.Local.ServerException("Invalid username or password"));
}
else if (webEx != null)
{
try
{
var result = ElementFactory.Local.FromXml(webEx.Response.AsStream);
if (result.Exception != null)
{
promise.Reject(result.Exception);
}
else
{
promise.Reject(ex);
}
}
catch (Exception)
{
promise.Reject(ex);
}
}
else if (ex is TaskCanceledException)
{
promise.Resolve(netCred);
}
else
{
promise.Reject(ex);
}
}).Always(trace.Dispose);
}
return(promise);
}
