package ca.uhn.hl7v2.hoh.encoder;
import static ca.uhn.hl7v2.hoh.util.StringUtils.*;
import java.io.IOException;
import java.io.InputStream;
import ca.uhn.hl7v2.hoh.api.DecodeException;
import ca.uhn.hl7v2.hoh.api.IAuthorizationServerCallback;
import ca.uhn.hl7v2.hoh.util.StringUtils;
public class Hl7OverHttpRequestDecoder extends AbstractHl7OverHttpDecoder {
private IAuthorizationServerCallback myAuthorizationCallback;
private String myActionLine;
private static final org.slf4j.Logger ourLog = org.slf4j.LoggerFactory.getLogger(Hl7OverHttpRequestDecoder.class);
protected void authorize() throws AuthorizationFailureException {
if (myAuthorizationCallback != null) {
String username = getUsername();
if (!myAuthorizationCallback.authorize(getPath(), username, getPassword())) {
if (StringUtils.isBlank(username)) {
throw new AuthorizationFailureException("Authorization failed: No username provided");
} else {
throw new AuthorizationFailureException("Authorization failed for user: " + getUsername());
}
}
} else {
if (isNotBlank(getUsername()) || isNotBlank(getPassword())) {
ourLog.warn("Request contains username and/or password, but no authorization callback has been set so credentials can not be validated");
}
}
}
@Override
protected String readActionLineAndDecode(InputStream theInputStream) throws DecodeException, IOException, NoMessageReceivedException {
if (myActionLine == null) {
String firstLine = readFirstLine(theInputStream);
if (firstLine == null || isBlank(firstLine)) {
throw new NoMessageReceivedException();
}
if (!firstLine.startsWith("POST ")) {
throw new DecodeException("HTTP request line message is not valid. Only POST action is supported. Request line was: " + firstLine);
}
firstLine = firstLine.substring(5);
int nextSpace = firstLine.indexOf(' ');
if (nextSpace == -1) {
throw new DecodeException("HTTP request line message is not valid. Not HTTP version found. Request line was: " + firstLine);
}
setPath(firstLine.substring(0, nextSpace));
if (isBlank(getPath())) {
throw new DecodeException("HTTP request line message is not valid. No request URI found. Request line was: " + firstLine);
}
String protocolVersion = firstLine.substring(nextSpace + 1);
if (!"HTTP/1.1".equals(protocolVersion)) {
throw new DecodeException("HTTP request line message is not valid. HTTP version not supported. Request line was: " + firstLine);
}
myActionLine = firstLine;
}
return myActionLine;
}
/**
* @param theAuthorizationCallback
* the authorizationCallback to set
*/
public void setAuthorizationCallback(IAuthorizationServerCallback theAuthorizationCallback) {
myAuthorizationCallback = theAuthorizationCallback;
}
}