mail: IMAP fix recv forever loop on server close connection

When reading stream from closed (by server) TCP socket throw StreamException (not ParseException).
This fixes forever loop in Protocol::HandleResponse on server disconnect.

This patch fixes #14710

Change-Id: I29e9830b360cb56cb1ef037c0378d64422075c4d
Reviewed-on: https://review.haiku-os.org/724
Reviewed-by: waddlesplash <[email protected]>

src/add-ons/mail_daemon/inbound_protocols/imap/imap_lib/Response.cpp

@@ -450,7 +450,8 @@ Response::~Response()
 
 
 void
-Response::Parse(BDataIO& stream, LiteralHandler* handler) throw(ParseException)
+Response::Parse(BDataIO& stream, LiteralHandler* handler)
+	throw(ParseException, StreamException)
 {
 	MakeEmpty();
 	fLiteralHandler = handler;
@@ -604,7 +605,7 @@ Response::ParseLiteral(ArgumentList& arguments, BDataIO& stream)
 			ssize_t bytesRead = stream.Read(buffer + totalRead,
 				size - totalRead);
 			if (bytesRead == 0)
-				throw ParseException("Unexpected end of literal");
+				throw StreamException(B_IO_ERROR);
 			if (bytesRead < 0)
 				throw StreamException(bytesRead);
 
@@ -706,7 +707,7 @@ Response::Read(BDataIO& stream)
 	}
 
 	if (bytesRead == 0)
-		throw ParseException("Unexpected end of stream");
+		throw StreamException(B_IO_ERROR);
 
 	throw StreamException(bytesRead);
 }
@@ -721,7 +722,7 @@ Response::_SkipLiteral(BDataIO& stream, size_t size)
 		size_t toRead = std::min(sizeof(buffer), size - totalRead);
 		ssize_t bytesRead = stream.Read(buffer, toRead);
 		if (bytesRead == 0)
-			throw ParseException("Unexpected end of literal");
+			throw StreamException(B_IO_ERROR);
 		if (bytesRead < 0)
 			throw StreamException(bytesRead);
 
@@ -762,7 +763,7 @@ ResponseParser::SetLiteralHandler(LiteralHandler* handler)
 
 status_t
 ResponseParser::NextResponse(Response& response, bigtime_t timeout)
-	throw(ParseException)
+	throw(ParseException, StreamException)
 {
 	response.Parse(*fStream, fLiteralHandler);
 	return B_OK;

src/add-ons/mail_daemon/inbound_protocols/imap/imap_lib/Response.h

@@ -145,7 +145,7 @@ public:
 								~Response();
 
 			void				Parse(BDataIO& stream, LiteralHandler* handler)
-									throw(ParseException);
+									throw(ParseException, StreamException);
 
 			bool				IsUntagged() const { return fTag == 0; }
 			uint32				Tag() const { return fTag; }
@@ -194,7 +194,8 @@ public:
 			void				SetLiteralHandler(LiteralHandler* handler);
 
 			status_t			NextResponse(Response& response,
-									bigtime_t timeout) throw(ParseException);
+									bigtime_t timeout)
+									throw(ParseException, StreamException);
 
 private:
 								ResponseParser(const ResponseParser& other);