Add an optional parameter to specify the ip address for reverse connections

For security reasons, it can be important to limit which IP addresses a
LibVNCClient-based client should listen for reverse connections. This
commit adds that option.

To preserve binary backwards-compatibility, the field was added to the end
of the rfbclient struct, and the function ListenAtTcpPort retains its
signature (but calls the new ListenAtTcpPortAndAddress).

[jes: shortened the commit subject, added a longer explanation in the
commit body and adjusted style]

Signed-off-by: Luca Stauble <gnekoz@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

1 files changed, 4 insertions, 0 deletions

diff --git a/rfb/rfbclient.h b/rfb/rfbclient.h
index b3f2cd7..36ffe13 100644
--- a/rfb/rfbclient.h
+++ b/rfb/rfbclient.h
@@ -345,6 +345,9 @@ typedef struct _rfbClient {
         int listenSock;
 
 	FinishedFrameBufferUpdateProc FinishedFrameBufferUpdate;
+
+	char *listenAddress;
+
 } rfbClient;
 
 /* cursor.c */
@@ -541,6 +544,7 @@ extern rfbBool ReadFromRFBServer(rfbClient* client, char *out, unsigned int n);
 extern rfbBool WriteToRFBServer(rfbClient* client, char *buf, int n);
 extern int FindFreeTcpPort(void);
 extern int ListenAtTcpPort(int port);
+extern int ListenAtTcpPortAndAddress(int port, const char *address);
 extern int ConnectClientToTcpAddr(unsigned int host, int port);
 extern int ConnectClientToTcpAddr6(const char *hostname, int port);
 extern int ConnectClientToUnixSock(const char *sockFile);