Use message from ServiceNotAuthorizedException, ServiceNotEnabledException

When sending an error response due to ServiceNotAuthorizedException or
ServiceNotEnabledException, usually we send a default message.  In the
ServiceNotEnabledException case, we use

	403 Git access forbidden

except in a dumb-HTTP-specific filter where we use the servlet
container's default 403 response:

	403 Forbidden

In the ServiceNotAuthorizedException case, we use the servlet
container's default 401 response:

	401 Unauthorized

There is one exception: a ServiceNotEnabledException when handling a
smart HTTP /info/refs request uses the message from the exception:

	403 Service not enabled

Be more consistent by always using the message from the exception.  This
way, authors of a RepositoryResolver, UploadPackFactory, or
ReceivePackFactory can provide a more detailed message when appropriate.
The defaults are

	401 Unauthorized
	403 Service not enabled

Change-Id: Id1fe1c2042fb96487c3671c1965c8a65c4b8e1b8
Signed-off-by: Jonathan Nieder <jrn@google.com>

org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/AsIsFileFilter.java

@@ -87,9 +87,9 @@ class AsIsFileFilter implements Filter {
 			asIs.access(req, db);
 			chain.doFilter(request, response);
 		} catch (ServiceNotAuthorizedException e) {
-			res.sendError(SC_UNAUTHORIZED);
+			res.sendError(SC_UNAUTHORIZED, e.getMessage());
 		} catch (ServiceNotEnabledException e) {
-			res.sendError(SC_FORBIDDEN);
+			res.sendError(SC_FORBIDDEN, e.getMessage());
 		}
 	}
 }

org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/ReceivePackServlet.java

@@ -137,11 +137,10 @@ class ReceivePackServlet extends HttpServlet {
 			try {
 				rp = receivePackFactory.create(req, getRepository(req));
 			} catch (ServiceNotAuthorizedException e) {
-				rsp.sendError(SC_UNAUTHORIZED);
+				rsp.sendError(SC_UNAUTHORIZED, e.getMessage());
 				return;
-
 			} catch (ServiceNotEnabledException e) {
-				sendError(req, rsp, SC_FORBIDDEN);
+				sendError(req, rsp, SC_FORBIDDEN, e.getMessage());
 				return;
 			}
 

org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/RepositoryFilter.java

@@ -137,10 +137,10 @@ public class RepositoryFilter implements Filter {
 			sendError(req, res, SC_NOT_FOUND);
 			return;
 		} catch (ServiceNotEnabledException e) {
-			sendError(req, res, SC_FORBIDDEN);
+			sendError(req, res, SC_FORBIDDEN, e.getMessage());
 			return;
 		} catch (ServiceNotAuthorizedException e) {
-			res.sendError(SC_UNAUTHORIZED);
+			res.sendError(SC_UNAUTHORIZED, e.getMessage());
 			return;
 		} catch (ServiceMayNotContinueException e) {
 			sendError(req, res, SC_FORBIDDEN, e.getMessage());

org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/SmartServiceInfoRefs.java

@@ -98,7 +98,7 @@ abstract class SmartServiceInfoRefs implements Filter {
 			try {
 				begin(req, db);
 			} catch (ServiceNotAuthorizedException e) {
-				res.sendError(SC_UNAUTHORIZED);
+				res.sendError(SC_UNAUTHORIZED, e.getMessage());
 				return;
 			} catch (ServiceNotEnabledException e) {
 				sendError(req, res, SC_FORBIDDEN, e.getMessage());
@@ -132,11 +132,9 @@ abstract class SmartServiceInfoRefs implements Filter {
 			advertise(req, new PacketLineOutRefAdvertiser(out));
 			buf.close();
 		} catch (ServiceNotAuthorizedException e) {
-			res.sendError(SC_UNAUTHORIZED);
+			res.sendError(SC_UNAUTHORIZED, e.getMessage());
-
 		} catch (ServiceNotEnabledException e) {
-			sendError(req, res, SC_FORBIDDEN);
+			sendError(req, res, SC_FORBIDDEN, e.getMessage());
-
 		} catch (ServiceMayNotContinueException e) {
 			if (e.isOutput())
 				buf.close();

org.eclipse.jgit.http.server/src/org/eclipse/jgit/http/server/UploadPackServlet.java

@@ -137,11 +137,10 @@ class UploadPackServlet extends HttpServlet {
 			try {
 				rp = uploadPackFactory.create(req, getRepository(req));
 			} catch (ServiceNotAuthorizedException e) {
-				rsp.sendError(SC_UNAUTHORIZED);
+				rsp.sendError(SC_UNAUTHORIZED, e.getMessage());
 				return;
-
 			} catch (ServiceNotEnabledException e) {
-				sendError(req, rsp, SC_FORBIDDEN);
+				sendError(req, rsp, SC_FORBIDDEN, e.getMessage());
 				return;
 			}