Allow binding to a chosen address.

diff --git a/peer.c b/peer.c
index e1362e9be2a0f81679a873df760d1db8ec4f2f37..9a2fc5918f66258eec3903f8d3b219184363a736 100644 (file)
--- a/peer.c
+++ b/peer.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: peer.c,v 1.7 2003/04/15 14:12:05 mdw Exp $
+ * $Id: peer.c,v 1.8 2003/05/16 12:09:03 mdw Exp $
  *
  * Communication with the peer
  *
@@ -29,6 +29,9 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: peer.c,v $
+ * Revision 1.8  2003/05/16 12:09:03  mdw
+ * Allow binding to a chosen address.
+ *
  * Revision 1.7  2003/04/15 14:12:05  mdw
  * Insert a newline to improve readability.
  *
@@ -276,14 +279,15 @@ const addr *p_addr(peer *p) { return (&p->peer); }
 
 /* --- @p_init@ --- *
  *
- * Arguments:  @unsigned port@ = port number to listen to
+ * Arguments:  @struct in_addr addr@ = address to bind to
+ *             @unsigned port@ = port number to listen to
  *
  * Returns:    ---
  *
  * Use:                Initializes the peer system; creates the socket.
  */
 
-void p_init(unsigned port)
+void p_init(struct in_addr addr, unsigned port)
 {
   int fd;
   struct sockaddr_in sin;
@@ -301,7 +305,7 @@ void p_init(unsigned port)
     die(EXIT_FAILURE, "socket creation failed: %s", strerror(errno));
   BURN(sin);
   sin.sin_family = AF_INET;
-  sin.sin_addr.s_addr = INADDR_ANY;
+  sin.sin_addr = addr;
   sin.sin_port = htons(port);
   if (bind(fd, (struct sockaddr *)&sin, sizeof(sin)))
     die(EXIT_FAILURE, "bind failed: %s", strerror(errno));

diff --git a/tripe.c b/tripe.c
index 9e2256596609f3218aa9774566f4c011abd2de27..e0985966f1692fff61d337840f4e933128b0aef8 100644 (file)
--- a/tripe.c
+++ b/tripe.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: tripe.c,v 1.9 2003/04/15 14:11:09 mdw Exp $
+ * $Id: tripe.c,v 1.10 2003/05/16 12:09:03 mdw Exp $
  *
  * Main program
  *
@@ -29,6 +29,9 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: tripe.c,v $
+ * Revision 1.10  2003/05/16 12:09:03  mdw
+ * Allow binding to a chosen address.
+ *
  * Revision 1.9  2003/04/15 14:11:09  mdw
  * Rationalize the behaviour of the `-G' and `-U' options.
  *
@@ -151,6 +154,7 @@ int main(int argc, char *argv[])
   const char *dir = "/var/lib/tripe";
   const char *p;
   unsigned port = 0;
+  struct in_addr baddr = { INADDR_ANY };
   unsigned f = 0;
   uid_t u = -1;
   gid_t g = -1;
@@ -175,6 +179,7 @@ int main(int argc, char *argv[])
       { "setuid",      OPTF_ARGREQ,    0,      'U' },
       { "gid",         OPTF_ARGREQ,    0,      'G' },
       { "setgid",      OPTF_ARGREQ,    0,      'G' },
+      { "bind-address",        OPTF_ARGREQ,    0,      'b' },
       { "port",                OPTF_ARGREQ,    0,      'p' },
       { "directory",   OPTF_ARGREQ,    0,      'd' },
       { "priv-keyring",        OPTF_ARGREQ,    0,      'k' },
@@ -188,7 +193,7 @@ int main(int argc, char *argv[])
       { 0,             0,              0,      0 }
     };
 
-    int i = mdwopt(argc, argv, "hvu DU:G: p:d:k:K:t:a:" T("T:"),
+    int i = mdwopt(argc, argv, "hvu DU:G: b:p:d:k:K:t:a:" T("T:"),
                   opts, 0, 0, 0);
     if (i < 0)
       break;
@@ -232,7 +237,13 @@ int main(int argc, char *argv[])
          die(EXIT_FAILURE, "group `%s' not found", optarg);
        g = gr->gr_gid;
       } break;
-         
+
+      case 'b': {
+       struct hostent *h = gethostbyname(optarg);
+       if (!h)
+         die(EXIT_FAILURE, "unknown host name `%s'", optarg);
+       memcpy(&baddr, h->h_addr, sizeof(struct in_addr));
+      } break;
       case 'p': {
        char *p;
        unsigned long i = strtoul(optarg, &p, 0);
@@ -289,7 +300,7 @@ int main(int argc, char *argv[])
   rand_seed(RAND_GLOBAL, RMD160_HASHSZ);
   signal(SIGPIPE, SIG_IGN);
   tun_init();
-  p_init(port);
+  p_init(baddr, port);
   if (!(f & f_daemon))
     a_create(STDIN_FILENO, STDOUT_FILENO);
   if (g != (gid_t)-1) {

diff --git a/tripe.h b/tripe.h
index 3c0a15419630cf16001a4f611814a9b85d40dde1..1f73d6ba22ddcf5a33072189666351e8de68e7a9 100644 (file)
--- a/tripe.h
+++ b/tripe.h
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: tripe.h,v 1.14 2003/04/06 10:36:33 mdw Exp $
+ * $Id: tripe.h,v 1.15 2003/05/16 12:09:03 mdw Exp $
  *
  * Main header file for TrIPE
  *
@@ -29,6 +29,9 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: tripe.h,v $
+ * Revision 1.15  2003/05/16 12:09:03  mdw
+ * Allow binding to a chosen address.
+ *
  * Revision 1.14  2003/04/06 10:36:33  mdw
  * Rearrange so as not to include Linux headers unless we need to.
  *
@@ -893,14 +896,15 @@ extern const addr *p_addr(peer */*p*/);
 
 /* --- @p_init@ --- *
  *
- * Arguments:  @unsigned port@ = port number to listen to
+ * Arguments:  @struct in_addr addr@ = address to bind to
+ *             @unsigned port@ = port number to listen to
  *
  * Returns:    ---
  *
  * Use:                Initializes the peer system; creates the socket.
  */
 
-extern void p_init(unsigned /*port*/);
+extern void p_init(struct in_addr /*addr*/, unsigned /*port*/);
 
 /* --- @p_port@ --- *
  *