/**
* Construct an EbXmlMessage for sending.
*
* @param s An SdSTransmissionDetails instance for recipient information
* @param m SpineHL7Message instance to be sent
* @param c Reference to an SDSconnection for resolving URLs
*/
public EbXmlMessage(SdsTransmissionDetails s, SpineHL7Message m)
{
SDSconnection c = ConnectionManager.getInstance().SdsConnection;
odsCode = s.Org;
header = new EbXmlHeader(this, s);
type = EBXML;
hl7message = m;
string svcurl = c.resolveUrl(s.SvcIA);
if (svcurl == null)
{
resolvedUrl = s.Url;
}
else
{
resolvedUrl = svcurl;
}
if (s.Retries != SdsTransmissionDetails.NOT_SET)
{
retryCount = s.Retries;
minRetryInterval = s.RetryInterval;
persistDuration = s.PersistDuration;
}
attachments = new List <Attachment>();
persistable = (s.Retries > 0);
}
/**
* Instantiate the SDSconnection, reading configuration details from the Registry. There is an
* additional dependency on an external PKCS#12 (.pfx) file that contains the Spine endpoint
* certificate and key.
*/
public SDSconnection()
{
server = (string)Registry.GetValue(SDS_CONNECTION_REGSITRY_KEY, SDS_SERVER_REGVAL, "");
cacheDir = (string)Registry.GetValue(SDS_CONNECTION_REGSITRY_KEY, SDS_CACHE_FILE_REGVAL, "");
certificateFile = (string)Registry.GetValue(SDS_CONNECTION_REGSITRY_KEY, SDS_CERT_FILE_REGVAL, "");
urlResolverFile = (string)Registry.GetValue(SDS_CONNECTION_REGSITRY_KEY, URL_RESOLVER_FILE, "");
myAsid = (string)Registry.GetValue(SDS_CONNECTION_REGSITRY_KEY, MY_ASID, "");
myPartyKey = (string)Registry.GetValue(SDS_CONNECTION_REGSITRY_KEY, MY_PARTY_KEY, "");
EbXmlHeader.setMyPartyKey(myPartyKey);
string s = (string)Registry.GetValue(SDS_CONNECTION_REGSITRY_KEY, SDS_REFRESH_PERIOD_REGVAL, "");
loadUrlResolver();
if (s.Length > 0)
{
try
{
cacheRefreshPeriod = Int32.Parse(s);
}
catch (Exception)
{
EventLog logger = new EventLog("Application");
logger.Source = LOGSOURCE;
StringBuilder sb = new StringBuilder("Registry entry ");
sb.Append(SDS_REFRESH_PERIOD_REGVAL);
sb.Append(" has invalid non-integer value '");
sb.Append(s);
sb.Append("'. Using default value ");
sb.Append(DEFAULT_REFRESH_PERIOD);
sb.Append(" hours instead");
logger.WriteEntry(sb.ToString(), EventLogEntryType.Warning);
}
}
s = (string)Registry.GetValue(SDS_CONNECTION_REGSITRY_KEY, SDS_OPENTEST_REGVAL, "");
opentest = (s.ToUpper().StartsWith("Y"));
serviceRoot = (opentest) ? OPENTEST_SERVICES_ROOT : CIS_SERVICES_ROOT;
if (server.Length == 0)
{
if (cacheDir.Length == 0)
{
EventLog logger = new EventLog("Application");
logger.Source = LOGSOURCE;
logger.WriteEntry("Neither LDAP server name nor cache file registry entries are set - cannot resolve anything!", EventLogEntryType.Error);
}
else
{
cache = new SDScache(cacheDir, cacheRefreshPeriod);
}
}
else
{
if (cacheDir.Length == 0)
{
EventLog logger = new EventLog("Application");
logger.Source = LOGSOURCE;
logger.WriteEntry("Cache file registry entry not set: all queries will be resolved directly from SDS and this MAY impact performance", EventLogEntryType.Warning);
}
else
{
cache = new SDScache(cacheDir, cacheRefreshPeriod);
}
}
if (certificateFile.Length > 0)
{
try
{
String certPass = (string)Registry.GetValue(SDS_CONNECTION_REGSITRY_KEY, SDS_CERT_PASS_REGVAL, "");
certificate = new X509Certificate(certificateFile, certPass);
}
catch (Exception e)
{
EventLog logger = new EventLog("Application");
logger.Source = LOGSOURCE;
StringBuilder sb = new StringBuilder("Certificate ");
sb.Append(certificateFile);
sb.Append(" failed to load: ");
sb.Append(e.ToString());
sb.Append(" - no lookups can be made against SDS");
logger.WriteEntry(sb.ToString(), EventLogEntryType.Error);
}
}
else
{
EventLog logger = new EventLog("Application");
logger.Source = LOGSOURCE;
logger.WriteEntry("No certificate provided - queries will be resolved from cache only", EventLogEntryType.Warning);
}
}
/**
* Used to assemble an EbXmlMessage from the given Stream, which has been accepted from the network.
* This expects to get the inbound HTTP stream (or at least an SslStream) from the start, because it
* begins processing with the HTTP POST.
*/
public EbXmlMessage(Stream instream)
{
// Assemble from network - note that Spine messages are NOT chunked
//
string headerline = null;
Dictionary <string, string> headers = new Dictionary <string, string>();
while ((headerline = readLine(instream)).Trim().Length != 0)
{
if (headerline.StartsWith("POST"))
{
int firstSpace = headerline.IndexOf(' ');
int secondSpace = headerline.IndexOf(' ', firstSpace + 1);
if ((firstSpace == -1) || (secondSpace == -1))
{
throw new Exception("Malformed HTTP request line, can't parse POST context path");
}
receivedContextPath = headerline.Substring(firstSpace, secondSpace - firstSpace);
}
else
{
int colon = headerline.IndexOf(":");
if (colon == -1)
{
throw new Exception("Malformed HTTP header - no field/data delimiter colon");
}
headers.Add(headerline.Substring(0, colon).ToUpper(), headerline.Substring(colon + 1).Trim());
}
}
string ctype = headers["CONTENT-TYPE"];
if (ctype == null)
{
throw new Exception("Malformed HTTP headers - no Content-Type found");
}
if (ctype.Contains("multipart/related"))
{
mimeboundary = setMimeBoundary(ctype);
}
receivedHost = headers["HOST"];
string clen = headers["CONTENT-LENGTH"];
if (clen == null)
{
throw new Exception("Malformed HTTP headers - no Content-Length found");
}
int contentlength = Int32.Parse(clen);
soapAction = headers["SOAPACTION"];
soapAction = soapAction.Replace('"', ' ').Trim();
// There is a bug in Spine-hosted services that turns a SOAPaction starting with
// "urn:" into "urn:urn:" - fix this if we find it.
//
if (soapAction.StartsWith("urn:urn:"))
{
soapAction = soapAction.Substring(4);
}
// Read content-length bytes and parse out the various parts of the
// received message.
// TODO: Put in proper handling.
//
Byte[] wire = new Byte[contentlength];
int bytesRead = 0;
while (bytesRead < contentlength)
{
bytesRead += instream.Read(wire, bytesRead, contentlength - bytesRead);
}
string msg = Encoding.UTF8.GetString(wire);
// Split on the mimeboundary. "msg" doesn't contain the HTTP headers so we should
// just be able to walk through the attachments. If we can't, report an exception
//
int startPosition = msg.IndexOf(mimeboundary, 0);
if (startPosition == -1)
{
// Need to handle the case where the content is
// actually an asynchronous ebXML ack.
//
// If content-type is text/xml and soapaction contains Acknowledgment or MessageError,
// it is an ack/nack. If we get one of these we need to log it and tell the connection
// manager about it. But we don't need to do any further processing.
//
if (ctype.ToLower().StartsWith("text/xml"))
{
if (soapAction.Contains("Acknowledgment"))
{
// Remove from requests, and exit
string a = EbXmlAcknowledgment.getAckedMessageId(msg);
if (a == null)
{
EventLog logger = new EventLog("Application");
logger.Source = ConnectionManager.LOGSOURCE;
StringBuilder sb = new StringBuilder("Failed to extract message id reference from Acknowledgment: ");
sb.Append(msg);
logger.WriteEntry(sb.ToString(), EventLogEntryType.Error);
return;
}
ConnectionManager cm = ConnectionManager.getInstance();
cm.registerAck(a);
return;
}
if (soapAction.Contains("MessageError"))
{
// Remove from requests, and exit
string a = EbXmlAcknowledgment.getAckedMessageId(msg);
if (a == null)
{
EventLog logger = new EventLog("Application");
logger.Source = ConnectionManager.LOGSOURCE;
StringBuilder sb = new StringBuilder("Failed to extract message id reference from MessageError: ");
sb.Append(msg);
logger.WriteEntry(sb.ToString(), EventLogEntryType.Error);
return;
}
EventLog l = new EventLog("Application");
l.Source = ConnectionManager.LOGSOURCE;
StringBuilder sbe = new StringBuilder("EbXML MessageError received: ");
sbe.Append(msg);
l.WriteEntry(sbe.ToString(), EventLogEntryType.Error);
ConnectionManager cm = ConnectionManager.getInstance();
cm.registerAck(a);
return;
}
}
throw new Exception("Malformed message");
}
int endPosition = 0;
int partCount = 0;
bool gotEndBoundary = false;
do
{
startPosition += mimeboundary.Length;
endPosition = msg.IndexOf(mimeboundary, startPosition);
if (endPosition == -1)
{
gotEndBoundary = true;
}
else
{
switch (partCount)
{
case 0:
header = new EbXmlHeader(msg.Substring(startPosition, endPosition - startPosition));
if (header.Timestamp != null)
{
started = DateTime.Parse(header.Timestamp);
// We don't know how many attempts were actually made, so assume
// only one try at the start time.
//
lastTry = DateTime.Parse(header.Timestamp);
tries = 1;
}
break;
case 1:
hl7message = new SpineHL7Message(msg.Substring(startPosition, endPosition - startPosition));
break;
default:
if (attachments == null)
{
attachments = new List <Attachment>();
}
// IMPROVEMENT: Make this more flexible to be able to support multiple types of
// ITK trunk message, just in case
//
if (soapAction.Contains("COPC_IN000001GB01"))
{
attachments.Add(new ITKDistributionEnvelopeAttachment(msg.Substring(startPosition, endPosition - startPosition)));
}
else
{
attachments.Add(new GeneralAttachment(msg.Substring(startPosition, endPosition - startPosition)));
}
break;
}
partCount++;
startPosition = endPosition;
}
}while (!gotEndBoundary);
// persistDuration = (int)(ConnectionManager.getInstance().getPersistDuration(header.SvcIA).TotalSeconds);
}
/**
* Used to assemble an EbXmlMessage from the given Stream, which has been accepted from the network.
* This expects to get the inbound HTTP stream (or at least an SslStream) from the start, because it
* begins processing with the HTTP POST.
*/
public EbXmlMessage(Stream instream)
{
// Assemble from network - note that Spine messages are NOT chunked
//
string headerline = null;
Dictionary<string, string> headers = new Dictionary<string, string>();
while ((headerline = readLine(instream)).Trim().Length != 0)
{
if (headerline.StartsWith("POST"))
{
int firstSpace = headerline.IndexOf(' ');
int secondSpace = headerline.IndexOf(' ', firstSpace + 1);
if ((firstSpace == -1) || (secondSpace == -1))
throw new Exception("Malformed HTTP request line, can't parse POST context path");
receivedContextPath = headerline.Substring(firstSpace, secondSpace - firstSpace);
}
else
{
int colon = headerline.IndexOf(":");
if (colon == -1)
{
throw new Exception("Malformed HTTP header - no field/data delimiter colon");
}
headers.Add(headerline.Substring(0, colon).ToUpper(), headerline.Substring(colon + 1).Trim());
}
}
string ctype = headers["CONTENT-TYPE"];
if (ctype == null) {
throw new Exception("Malformed HTTP headers - no Content-Type found");
}
if (ctype.Contains("multipart/related")) {
mimeboundary = setMimeBoundary(ctype);
}
receivedHost = headers["HOST"];
string clen = headers["CONTENT-LENGTH"];
if (clen == null)
{
throw new Exception("Malformed HTTP headers - no Content-Length found");
}
int contentlength = Int32.Parse(clen);
soapAction = headers["SOAPACTION"];
soapAction = soapAction.Replace('"', ' ').Trim();
// There is a bug in Spine-hosted services that turns a SOAPaction starting with
// "urn:" into "urn:urn:" - fix this if we find it.
//
if (soapAction.StartsWith("urn:urn:"))
soapAction = soapAction.Substring(4);
// Read content-length bytes and parse out the various parts of the
// received message.
// TODO: Put in proper handling.
//
Byte[] wire = new Byte[contentlength];
int bytesRead = 0;
while (bytesRead < contentlength)
{
bytesRead += instream.Read(wire, bytesRead, contentlength - bytesRead);
}
string msg = Encoding.UTF8.GetString(wire);
// Split on the mimeboundary. "msg" doesn't contain the HTTP headers so we should
// just be able to walk through the attachments. If we can't, report an exception
//
int startPosition = msg.IndexOf(mimeboundary, 0);
if (startPosition == -1)
{
// Need to handle the case where the content is
// actually an asynchronous ebXML ack.
//
// If content-type is text/xml and soapaction contains Acknowledgment or MessageError,
// it is an ack/nack. If we get one of these we need to log it and tell the connection
// manager about it. But we don't need to do any further processing.
//
if (ctype.ToLower().StartsWith("text/xml"))
{
if (soapAction.Contains("Acknowledgment"))
{
// Remove from requests, and exit
string a = EbXmlAcknowledgment.getAckedMessageId(msg);
if (a == null)
{
EventLog logger = new EventLog("Application");
logger.Source = ConnectionManager.LOGSOURCE;
StringBuilder sb = new StringBuilder("Failed to extract message id reference from Acknowledgment: ");
sb.Append(msg);
logger.WriteEntry(sb.ToString(), EventLogEntryType.Error);
return;
}
ConnectionManager cm = ConnectionManager.getInstance();
cm.registerAck(a);
return;
}
if (soapAction.Contains("MessageError"))
{
// Remove from requests, and exit
string a = EbXmlAcknowledgment.getAckedMessageId(msg);
if (a == null)
{
EventLog logger = new EventLog("Application");
logger.Source = ConnectionManager.LOGSOURCE;
StringBuilder sb = new StringBuilder("Failed to extract message id reference from MessageError: ");
sb.Append(msg);
logger.WriteEntry(sb.ToString(), EventLogEntryType.Error);
return;
}
EventLog l = new EventLog("Application");
l.Source = ConnectionManager.LOGSOURCE;
StringBuilder sbe = new StringBuilder("EbXML MessageError received: ");
sbe.Append(msg);
l.WriteEntry(sbe.ToString(), EventLogEntryType.Error);
ConnectionManager cm = ConnectionManager.getInstance();
cm.registerAck(a);
return;
}
}
throw new Exception("Malformed message");
}
int endPosition = 0;
int partCount = 0;
bool gotEndBoundary = false;
do
{
startPosition += mimeboundary.Length;
endPosition = msg.IndexOf(mimeboundary, startPosition);
if (endPosition == -1)
{
gotEndBoundary = true;
}
else
{
switch (partCount)
{
case 0:
header = new EbXmlHeader(msg.Substring(startPosition, endPosition - startPosition));
if (header.Timestamp != null)
{
started = DateTime.Parse(header.Timestamp);
// We don't know how many attempts were actually made, so assume
// only one try at the start time.
//
lastTry = DateTime.Parse(header.Timestamp);
tries = 1;
}
break;
case 1:
hl7message = new SpineHL7Message(msg.Substring(startPosition, endPosition - startPosition));
break;
default:
if (attachments == null)
attachments = new List<Attachment>();
// IMPROVEMENT: Make this more flexible to be able to support multiple types of
// ITK trunk message, just in case
//
if (soapAction.Contains("COPC_IN000001GB01"))
{
attachments.Add(new ITKDistributionEnvelopeAttachment(msg.Substring(startPosition, endPosition - startPosition)));
}
else
{
attachments.Add(new GeneralAttachment(msg.Substring(startPosition, endPosition - startPosition)));
}
break;
}
partCount++;
startPosition = endPosition;
}
}
while (!gotEndBoundary);
// persistDuration = (int)(ConnectionManager.getInstance().getPersistDuration(header.SvcIA).TotalSeconds);
}
/**
* Construct an EbXmlMessage for sending.
*
* @param s An SdSTransmissionDetails instance for recipient information
* @param m SpineHL7Message instance to be sent
* @param c Reference to an SDSconnection for resolving URLs
*/
public EbXmlMessage(SdsTransmissionDetails s, SpineHL7Message m)
{
SDSconnection c = ConnectionManager.getInstance().SdsConnection;
odsCode = s.Org;
header = new EbXmlHeader(this, s);
type = EBXML;
hl7message = m;
string svcurl = c.resolveUrl(s.SvcIA);
if (svcurl == null)
resolvedUrl = s.Url;
else
resolvedUrl = svcurl;
if (s.Retries != SdsTransmissionDetails.NOT_SET)
{
retryCount = s.Retries;
minRetryInterval = s.RetryInterval;
persistDuration = s.PersistDuration;
}
attachments = new List<Attachment>();
persistable = (s.Retries > 0);
}
