/// <summary>
/// Returns the domain names which the server is configured to use.
/// </summary>
/// <returns>A list of domain names.</returns>
public IList <string> GetServerDomainNames()
{
StringCollection baseAddresses = new StringCollection();
if (this.ServerConfiguration != null)
{
if (this.ServerConfiguration.BaseAddresses != null)
{
baseAddresses.AddRange(this.ServerConfiguration.BaseAddresses);
}
if (this.ServerConfiguration.AlternateBaseAddresses != null)
{
baseAddresses.AddRange(this.ServerConfiguration.AlternateBaseAddresses);
}
}
if (this.DiscoveryServerConfiguration != null)
{
if (this.DiscoveryServerConfiguration.BaseAddresses != null)
{
baseAddresses.AddRange(this.DiscoveryServerConfiguration.BaseAddresses);
}
if (this.DiscoveryServerConfiguration.AlternateBaseAddresses != null)
{
baseAddresses.AddRange(this.DiscoveryServerConfiguration.AlternateBaseAddresses);
}
}
var domainNames = new List <string>();
for (int ii = 0; ii < baseAddresses.Count; ii++)
{
Uri url = Utils.ParseUri(baseAddresses[ii]);
if (url == null)
{
continue;
}
string domainName = url.DnsSafeHost;
if (url.HostNameType == UriHostNameType.Dns)
{
domainName = Utils.ReplaceLocalhost(domainName);
}
else // IPv4/IPv6 address
{
domainName = Utils.NormalizedIPAddress(domainName);
}
if (!Utils.FindStringIgnoreCase(domainNames, domainName))
{
domainNames.Add(domainName);
}
}
return(domainNames);
}
/// <summary>
/// Patch returned endpoints urls with url used to reached the endpoint.
/// </summary>
private EndpointDescriptionCollection PatchEndpointUrls(EndpointDescriptionCollection endpoints)
{
// if a server is behind a firewall, can only be accessed with a FQDN or IP address
// it may return URLs that are not accessible to the client. This problem can be avoided
// by assuming that the domain in the URL used to call GetEndpoints can be used to
// access any of the endpoints. This code patches the returned endpoints accordingly.
Uri endpointUrl = Utils.ParseUri(this.Endpoint.EndpointUrl);
if (endpointUrl != null)
{
// patch discovery Url to endpoint Url used for service call
foreach (EndpointDescription discoveryEndPoint in endpoints)
{
Uri discoveryEndPointUri = Utils.ParseUri(discoveryEndPoint.EndpointUrl);
if (endpointUrl.Scheme == discoveryEndPointUri.Scheme)
{
UriBuilder builder = new UriBuilder(discoveryEndPointUri);
builder.Host = endpointUrl.DnsSafeHost;
builder.Port = endpointUrl.Port;
discoveryEndPoint.EndpointUrl = builder.ToString();
}
if (discoveryEndPoint.Server != null &&
discoveryEndPoint.Server.DiscoveryUrls != null)
{
discoveryEndPoint.Server.DiscoveryUrls.Clear();
discoveryEndPoint.Server.DiscoveryUrls.Add(this.Endpoint.EndpointUrl.ToString());
}
}
}
return(endpoints);
}
/// <summary>
/// Adds the discovery url to the hosts.
/// </summary>
/// <param name="configuration">The configuration.</param>
/// <param name="discoveryUrls">The discovery urls.</param>
public virtual void InitializeDiscovery(
ApplicationConfiguration configuration,
StringCollection discoveryUrls)
{
// create the binding factory.
BindingFactory bindingFactory = BindingFactory.Create(configuration, configuration.CreateMessageContext());
EndpointConfiguration endpointConfiguration = EndpointConfiguration.Create(configuration);
foreach (string discoveryUrl in discoveryUrls)
{
// parse discovery url.
Uri url = Utils.ParseUri(discoveryUrl);
if (url == null)
{
continue;
}
// create endpoint.
if (url.PathAndQuery.EndsWith("/discovery"))
{
Binding binding = bindingFactory.Create(url.Scheme, endpointConfiguration);
this.AddServiceEndpoint(typeof(IDiscoveryEndpoint), binding, url, url);
}
}
}
/// <summary>
/// Creates a configured endpoint from the server description.
/// </summary>
public ConfiguredEndpoint(
ApplicationDescription server,
EndpointConfiguration configuration)
{
if (server == null)
{
throw new ArgumentNullException("server");
}
m_description = new EndpointDescription();
m_updateBeforeConnect = true;
m_description.Server = server;
foreach (string discoveryUrl in server.DiscoveryUrls)
{
string baseUrl = discoveryUrl;
if (baseUrl != null)
{
if (baseUrl.EndsWith("/discovery", StringComparison.Ordinal))
{
baseUrl = baseUrl.Substring(0, baseUrl.Length - "/discovery".Length);
}
}
Uri url = Utils.ParseUri(baseUrl);
if (url != null)
{
// MY EDITS TO TRY MAKING WORK WITH USERNAME
m_description.EndpointUrl = url.ToString();
m_description.SecurityMode = MessageSecurityMode.None; // MessageSecurityMode.SignAndEncrypt;
m_description.SecurityPolicyUri = SecurityPolicies.None; //SecurityPolicies.Basic128Rsa15;
m_description.UserIdentityTokens.Add(new UserTokenPolicy(UserTokenType.UserName)); // Anonymous));
if (url.Scheme == Utils.UriSchemeHttps)
{
m_description.TransportProfileUri = Profiles.HttpsBinaryTransport;
}
if (url.Scheme == Utils.UriSchemeOpcTcp)
{
m_description.TransportProfileUri = Profiles.UaTcpTransport;
}
break;
}
}
// ensure a default configuration.
if (configuration == null)
{
configuration = EndpointConfiguration.Create();
}
Update(configuration);
}
/// <summary>
/// Returns the domain names which the server is configured to use.
/// </summary>
/// <returns>A list of domain names.</returns>
public IList <string> GetServerDomainNames()
{
List <string> domainNames = new List <string>();
StringCollection baseAddresses = new StringCollection();
if (this.ServerConfiguration != null)
{
if (this.ServerConfiguration.BaseAddresses != null)
{
baseAddresses.AddRange(this.ServerConfiguration.BaseAddresses);
}
if (this.ServerConfiguration.AlternateBaseAddresses != null)
{
baseAddresses.AddRange(this.ServerConfiguration.AlternateBaseAddresses);
}
}
if (this.DiscoveryServerConfiguration != null)
{
if (this.DiscoveryServerConfiguration.BaseAddresses != null)
{
baseAddresses.AddRange(this.DiscoveryServerConfiguration.BaseAddresses);
}
if (this.DiscoveryServerConfiguration.AlternateBaseAddresses != null)
{
baseAddresses.AddRange(this.DiscoveryServerConfiguration.AlternateBaseAddresses);
}
}
for (int ii = 0; ii < baseAddresses.Count; ii++)
{
Uri url = Utils.ParseUri(baseAddresses[ii]);
if (url == null)
{
continue;
}
string domainName = url.DnsSafeHost;
if (String.Compare(domainName, "localhost", StringComparison.OrdinalIgnoreCase) == 0)
{
domainName = Utils.GetHostName();
}
if (!Utils.FindStringIgnoreCase(domainNames, domainName))
{
domainNames.Add(domainName);
}
}
return(domainNames);
}
/// <summary>
/// Returns a discovery url that can be used to update the endpoint description.
/// </summary>
public Uri GetDiscoveryUrl(Uri endpointUrl)
{
// update the endpoint description.
if (endpointUrl != null)
{
m_description.EndpointUrl = endpointUrl.ToString();
}
else
{
endpointUrl = Utils.ParseUri(m_description.EndpointUrl);
}
// get the know discovery URLs.
StringCollection discoveryUrls = null;
if (m_description.Server != null)
{
discoveryUrls = m_description.Server.DiscoveryUrls;
}
// attempt to construct a discovery url by appending 'discovery' to the endpoint.
if (discoveryUrls == null || discoveryUrls.Count == 0)
{
if (endpointUrl.Scheme != Utils.UriSchemeOpcTcp)
{
return(new Uri(String.Format(CultureInfo.InvariantCulture, "{0}/discovery", endpointUrl)));
}
else
{
return(endpointUrl);
}
}
// choose the URL that uses the same protocol if one exists.
for (int ii = 1; ii < discoveryUrls.Count; ii++)
{
if (discoveryUrls[ii].StartsWith(endpointUrl.Scheme, StringComparison.Ordinal))
{
return(Utils.ParseUri(discoveryUrls[ii]));
}
}
// return the first in the list.
return(Utils.ParseUri(discoveryUrls[0]));
}
/// <summary>
/// Sets the parameters to suitable defaults.
/// </summary>
private static void SetSuitableDefaults(
ref string applicationUri,
ref string applicationName,
ref string subjectName,
ref IList <String> domainNames,
ref ushort keySize,
ref ushort lifetimeInMonths,
bool isCA)
{
// enforce recommended keysize unless lower value is enforced.
if (keySize < 1024)
{
keySize = defaultKeySize;
}
if (keySize % 1024 != 0)
{
throw new ArgumentNullException("keySize", "KeySize must be a multiple of 1024.");
}
// enforce minimum lifetime.
if (lifetimeInMonths < 1)
{
lifetimeInMonths = 1;
}
// parse the subject name if specified.
List <string> subjectNameEntries = null;
if (!String.IsNullOrEmpty(subjectName))
{
subjectNameEntries = Utils.ParseDistinguishedName(subjectName);
}
// check the application name.
if (String.IsNullOrEmpty(applicationName))
{
if (subjectNameEntries == null)
{
throw new ArgumentNullException("applicationName", "Must specify a applicationName or a subjectName.");
}
// use the common name as the application name.
for (int ii = 0; ii < subjectNameEntries.Count; ii++)
{
if (subjectNameEntries[ii].StartsWith("CN="))
{
applicationName = subjectNameEntries[ii].Substring(3).Trim();
break;
}
}
}
// remove special characters from name.
StringBuilder buffer = new StringBuilder();
for (int ii = 0; ii < applicationName.Length; ii++)
{
char ch = applicationName[ii];
if (Char.IsControl(ch) || ch == '/' || ch == ',' || ch == ';')
{
ch = '+';
}
buffer.Append(ch);
}
applicationName = buffer.ToString();
// ensure at least one host name.
if (domainNames == null || domainNames.Count == 0)
{
domainNames = new List <string>();
domainNames.Add(Utils.GetHostName());
}
// create the application uri.
if (String.IsNullOrEmpty(applicationUri))
{
StringBuilder builder = new StringBuilder();
builder.Append("urn:");
builder.Append(domainNames[0]);
builder.Append(":");
builder.Append(applicationName);
applicationUri = builder.ToString();
}
Uri uri = Utils.ParseUri(applicationUri);
if (uri == null)
{
throw new ArgumentNullException("applicationUri", "Must specify a valid URL.");
}
// create the subject name,
if (String.IsNullOrEmpty(subjectName))
{
subjectName = Utils.Format("CN={0}/DC={1}", applicationName, domainNames[0]);
}
}
/// <summary>
/// Updates an endpoint with information from the server's discovery endpoint.
/// </summary>
public void UpdateFromServer(
Uri endpointUrl,
MessageSecurityMode securityMode,
string securityPolicyUri)
{
// get the a discovery url.
Uri discoveryUrl = GetDiscoveryUrl(endpointUrl);
// create the discovery client.
DiscoveryClient client = DiscoveryClient.Create(discoveryUrl, m_configuration);
try
{
// get the endpoints.
EndpointDescriptionCollection collection = client.GetEndpoints(null);
if (collection == null || collection.Count == 0)
{
throw ServiceResultException.Create(
StatusCodes.BadUnknownResponse,
"Server does not have any endpoints defined.");
}
// find list of matching endpoints.
EndpointDescriptionCollection matches = new EndpointDescriptionCollection();
// first pass - match on the requested security parameters.
foreach (EndpointDescription description in collection)
{
// check for match on security policy.
if (!String.IsNullOrEmpty(securityPolicyUri))
{
if (securityPolicyUri != description.SecurityPolicyUri)
{
continue;
}
}
// check for match on security mode.
if (securityMode != MessageSecurityMode.Invalid)
{
if (securityMode != description.SecurityMode)
{
continue;
}
}
// add to list of matches.
matches.Add(description);
}
// no matches (security parameters may have changed).
if (matches.Count == 0)
{
matches = collection;
}
// check if list has to be narrowed down further.
if (matches.Count > 1)
{
collection = matches;
matches = new EndpointDescriptionCollection();
// second pass - match on the url scheme.
foreach (EndpointDescription description in collection)
{
// parse the endpoint url.
Uri sessionUrl = Utils.ParseUri(description.EndpointUrl);
if (sessionUrl == null)
{
continue;
}
// check for matching protocol.
if (sessionUrl.Scheme != endpointUrl.Scheme)
{
continue;
}
matches.Add(description);
}
}
// no matches (protocol may not be supported).
if (matches.Count == 0)
{
matches = collection;
}
// choose first in list by default.
EndpointDescription match = matches[0];
// check if list has to be narrowed down further.
if (matches.Count > 1)
{
// third pass - match based on security level.
foreach (EndpointDescription description in matches)
{
if (description.SecurityMode > match.SecurityMode)
{
match = description;
}
}
}
// check if the endpoint url matches the endpoint used in the request.
Uri matchUrl = Utils.ParseUri(match.EndpointUrl);
if (matchUrl == null || String.Compare(discoveryUrl.DnsSafeHost, matchUrl.DnsSafeHost, StringComparison.OrdinalIgnoreCase) != 0)
{
UriBuilder uri = new UriBuilder(matchUrl);
uri.Host = discoveryUrl.DnsSafeHost;
uri.Port = discoveryUrl.Port;
match.EndpointUrl = uri.ToString();
// need to update the discovery urls.
match.Server.DiscoveryUrls.Clear();
match.Server.DiscoveryUrls.Add(discoveryUrl.ToString());
}
// update the endpoint.
Update(match);
}
finally
{
client.Close();
}
}
/// <summary>
/// Sets the parameters to suitable defaults.
/// </summary>
private static void SetSuitableDefaults(
ref string applicationUri,
ref string applicationName,
ref string subjectName,
ref IList <String> domainNames)
{
// parse the subject name if specified.
List <string> subjectNameEntries = null;
if (!String.IsNullOrEmpty(subjectName))
{
subjectNameEntries = X509Utils.ParseDistinguishedName(subjectName);
}
// check the application name.
if (String.IsNullOrEmpty(applicationName))
{
if (subjectNameEntries == null)
{
throw new ArgumentNullException(nameof(applicationName), "Must specify a applicationName or a subjectName.");
}
// use the common name as the application name.
for (int ii = 0; ii < subjectNameEntries.Count; ii++)
{
if (subjectNameEntries[ii].StartsWith("CN=", StringComparison.Ordinal))
{
applicationName = subjectNameEntries[ii].Substring(3).Trim();
break;
}
}
}
if (String.IsNullOrEmpty(applicationName))
{
throw new ArgumentNullException(nameof(applicationName), "Must specify a applicationName or a subjectName.");
}
// remove special characters from name.
StringBuilder buffer = new StringBuilder();
for (int ii = 0; ii < applicationName.Length; ii++)
{
char ch = applicationName[ii];
if (Char.IsControl(ch) || ch == '/' || ch == ',' || ch == ';')
{
ch = '+';
}
buffer.Append(ch);
}
applicationName = buffer.ToString();
// ensure at least one host name.
if (domainNames == null || domainNames.Count == 0)
{
domainNames = new List <string>();
domainNames.Add(Utils.GetHostName());
}
// create the application uri.
if (String.IsNullOrEmpty(applicationUri))
{
StringBuilder builder = new StringBuilder();
builder.Append("urn:");
builder.Append(domainNames[0]);
builder.Append(':');
builder.Append(applicationName);
applicationUri = builder.ToString();
}
Uri uri = Utils.ParseUri(applicationUri);
if (uri == null)
{
throw new ArgumentNullException(nameof(applicationUri), "Must specify a valid URL.");
}
// create the subject name,
if (String.IsNullOrEmpty(subjectName))
{
subjectName = Utils.Format("CN={0}", applicationName);
}
if (!subjectName.Contains("CN="))
{
subjectName = Utils.Format("CN={0}", subjectName);
}
if (domainNames != null && domainNames.Count > 0)
{
if (!subjectName.Contains("DC=") && !subjectName.Contains('='))
{
subjectName += Utils.Format(", DC={0}", domainNames[0]);
}
else
{
subjectName = Utils.ReplaceDCLocalhost(subjectName, domainNames[0]);
}
}
}
