2010-01-08 Manuel Reimer <manuel.reimer@gmx.de>
This patch allowes to specify an IP with the "-p"-option to VDR, to get VDR
to open the port only on the given IP. Typical usecase:
vdr -p 127.0.0.1:2001

diff -U 6 -pr vdr-1.6.0.org/svdrp.c vdr-1.6.0/svdrp.c
--- vdr-1.6.0.org/svdrp.c	2009-07-17 20:49:30.936891806 +0200
+++ vdr-1.6.0/svdrp.c	2009-07-17 21:07:46.459050273 +0200
@@ -37,12 +37,14 @@
 #include "remote.h"
 #include "skins.h"
 #include "timers.h"
 #include "tools.h"
 #include "videodir.h"
 
+extern char *SVDRPip;
+
 // --- cSocket ---------------------------------------------------------------
 
 cSocket::cSocket(int Port, int Queue)
 {
   port = Port;
   sock = -1;
@@ -76,13 +78,13 @@ bool cSocket::Open(void)
      int ReUseAddr = 1;
      setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &ReUseAddr, sizeof(ReUseAddr));
      //
      struct sockaddr_in name;
      name.sin_family = AF_INET;
      name.sin_port = htons(port);
-     name.sin_addr.s_addr = htonl(INADDR_ANY);
+     name.sin_addr.s_addr = SVDRPip ? inet_addr(SVDRPip) : htonl(INADDR_ANY);
      if (bind(sock, (struct sockaddr *)&name, sizeof(name)) < 0) {
         LOG_ERROR;
         Close();
         return false;
         }
      // make it non-blocking:
diff -U 6 -pr vdr-1.6.0.org/vdr.c vdr-1.6.0/vdr.c
--- vdr-1.6.0.org/vdr.c	2009-07-17 20:49:30.940891674 +0200
+++ vdr-1.6.0/vdr.c	2009-07-17 20:50:48.507312043 +0200
@@ -83,12 +83,14 @@
 #define VPSUPTODATETIME     3600 // seconds before the event or schedule of a VPS timer needs to be refreshed
 
 #define EXIT(v) { ShutdownHandler.Exit(v); goto Exit; }
 
 static int LastSignal = 0;
 
+const char *SVDRPip = NULL;
+
 static bool SetUser(const char *UserName, bool UserDump)//XXX name?
 {
   if (UserName) {
      struct passwd *user = getpwnam(UserName);
      if (!user) {
         fprintf(stderr, "vdr: unknown user: '%s'\n", UserName);
@@ -319,12 +321,29 @@ int main(int argc, char *argv[])
                     break;
           case 'n' | 0x100:
                     UseKbd = false;
                     break;
           case 'p': if (isnumber(optarg))
                        SVDRPport = atoi(optarg);
+                    else if (strstr(optarg, ":")) {
+                       char *strtok_next;
+                       char *cip   = strtok_r(optarg, ":", &strtok_next);
+                       char *cport = strtok_r(NULL  , ":", &strtok_next);
+                       if (cip && inet_addr(cip) != INADDR_NONE)
+                          SVDRPip = cip;
+                       else {
+                          fprintf(stderr, "vdr: invalid IP: %s\n", optarg);
+                          return 2;
+                          }
+                       if (cport && isnumber(cport))
+                          SVDRPport = atoi(cport);
+                       else {
+                          fprintf(stderr, "vdr: invalid port number: %s\n", optarg);
+                          return 2;
+                          }
+                    }
                     else {
                        fprintf(stderr, "vdr: invalid port number: %s\n", optarg);
                        return 2;
                        }
                     break;
           case 'P': PluginManager.AddPlugin(optarg);