New peer option `-mobile': follow rapid IP address and port changes.

[tripe] / server / admin.c

diff --git a/server/admin.c b/server/admin.c
index 4e87e48c81799847f11f756035e23879d1722697..7fa3f0f85b8cbba34c1a0c0b545b7f975c112ec3 100644 (file)
--- a/server/admin.c
+++ b/server/admin.c
@@ -40,6 +40,7 @@ const trace_opt tr_opts[] = {
   { 'x',       T_KEYEXCH,      "key exchange" },
   { 'm',       T_KEYMGMT,      "key management" },
   { 'l',       T_CHAL,         "challenge management" },
+  { 'v',       T_PRIVSEP,      "privilege separation" },
   { 'p',       T_PACKET,       "packet contents" },
   { 'c',       T_CRYPTO,       "crypto details" },
   { 'A',       T_ALL,          "all of the above" },
@@ -521,6 +522,7 @@ void a_quit(void)
   close(sock.fd);
   unlink(sockname);
   FOREACH_PEER(p, { p_destroy(p); });
+  ps_quit();
   exit(0);
 }
 
@@ -1203,6 +1205,7 @@ static void a_doadd(admin_resop *r, int rc)
       a_bgok(&add->r.bg);
   }
 
+  if (add->peer.tag) xfree(add->peer.tag);
   xfree(add->peer.name);
 }
 
@@ -1226,9 +1229,10 @@ static void acmd_add(admin *a, unsigned ac, char *av[])
 
   add = xmalloc(sizeof(*add));
   add->peer.name = 0;
+  add->peer.tag = 0;
   add->peer.t_ka = 0;
   add->peer.tops = tun_default;
-  add->peer.kxf = 0;
+  add->peer.f = 0;
 
   /* --- Parse options --- */
 
@@ -1248,7 +1252,13 @@ static void acmd_add(admin *a, unsigned ac, char *av[])
       }
     })
     OPTTIME("-keepalive", t, { add->peer.t_ka = t; })
-    OPT("-cork", { add->peer.kxf |= KXF_CORK; })
+    OPT("-cork", { add->peer.f |= KXF_CORK; })
+    OPTARG("-key", arg, {
+      if (add->peer.tag)
+       xfree(add->peer.tag);
+      add->peer.tag = xstrdup(arg);
+    })
+    OPT("-mobile", { add->peer.f |= PSF_MOBILE; })
   });
 
   /* --- Make sure someone's not got there already --- */
@@ -1273,6 +1283,7 @@ bad_syntax:
   a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END);
 fail:
   if (add->peer.name) xfree(add->peer.name);
+  if (add->peer.tag) xfree(add->peer.tag);
   xfree(add);
   return;
 }
@@ -1664,6 +1675,34 @@ static void acmd_bgcancel(admin *a, unsigned ac, char *av[])
   }
 }
 
+static void acmd_algs(admin *a, unsigned ac, char *av[])
+{
+  a_info(a,
+        "kx-group=%s", gg->ops->name,
+        "kx-group-order-bits=%lu", (unsigned long)mp_bits(gg->r),
+        "kx-group-elt-bits=%lu", (unsigned long)gg->nbits,
+        A_END);
+  a_info(a,
+        "hash=%s", algs.h->name,
+        "mgf=%s", algs.mgf->name,
+        "hash-sz=%lu", (unsigned long)algs.h->hashsz,
+        A_END);
+  a_info(a,
+        "cipher=%s", algs.c->name,
+        "cipher-keysz=%lu", (unsigned long)algs.cksz,
+        "cipher-blksz=%lu", (unsigned long)algs.c->blksz,
+        A_END);
+  a_info(a,
+        "cipher-data-limit=%lu", (unsigned long)algs.expsz,
+        A_END);
+  a_info(a,
+        "mac=%s", algs.m->name,
+        "mac-keysz=%lu", (unsigned long)algs.mksz,
+        "mac-tagsz=%lu", (unsigned long)algs.tagsz,
+        A_END);
+  a_ok(a);
+}
+
 static void acmd_list(admin *a, unsigned ac, char *av[])
 {
   FOREACH_PEER(p, {  a_info(a, "%s", p_name(p), A_END); });
@@ -1755,6 +1794,7 @@ static void acmd_peerinfo(admin *a, unsigned ac, char *av[])
   if ((p = a_findpeer(a, av[0])) != 0) {
     ps = p_spec(p);
     a_info(a, "tunnel=%s", ps->tops->name, A_END);
+    a_info(a, "key=%s", p_tag(p), A_END);
     a_info(a, "keepalive=%lu", ps->t_ka, A_END);
     a_ok(a);
   }
@@ -1864,6 +1904,7 @@ static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]);
 static const acmd acmdtab[] = {
   { "add",     "[OPTIONS] PEER ADDR ...", 2,   0xffff, acmd_add },
   { "addr",    "PEER",                 1,      1,      acmd_addr },
+  { "algs",    0,                      0,      0,      acmd_algs },
   { "bgcancel",        "TAG",                  1,      1,      acmd_bgcancel },
   { "checkchal", "CHAL",               1,      1,      acmd_checkchal },
   { "daemon",  0,                      0,      0,      acmd_daemon },
@@ -2173,19 +2214,21 @@ void a_daemon(void) { flags |= F_DAEMON; }
  * Arguments:  @const char *name@ = socket name to create
  *             @uid_t u@ = user to own the socket
  *             @gid_t g@ = group to own the socket
+ *             @mode_t m@ = permissions to set on the socket
  *
  * Returns:    ---
  *
  * Use:                Creates the admin listening socket.
  */
 
-void a_init(const char *name, uid_t u, gid_t g)
+void a_init(const char *name, uid_t u, gid_t g, mode_t m)
 {
   int fd;
   int n = 5;
   struct sockaddr_un sun;
   struct sigaction sa;
   size_t sz;
+  mode_t omask;
 
   /* --- Create services table --- */
 
@@ -2203,7 +2246,7 @@ void a_init(const char *name, uid_t u, gid_t g)
 
   /* --- Attempt to bind to the socket --- */
 
-  umask(0077);
+  omask = umask(0077);
 again:
   if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
     die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno));
@@ -2234,12 +2277,15 @@ again:
     close(fd);
     goto again;
   }
-  chmod(sun.sun_path, 0600);
   if (chown(sun.sun_path, u, g)) {
-    T( trace(T_ADMIN,
-            "admin: failed to give away socket: %s",
-            strerror(errno)); )
+    die(EXIT_FAILURE, "failed to set socket owner: %s",
+       strerror(errno));
+  }
+  if (chmod(sun.sun_path, m)) {
+    die(EXIT_FAILURE, "failed to set socket permissions: %s",
+       strerror(errno));
   }
+  umask(omask);
   fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
   if (listen(fd, 5))
     die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno));