[ViewVC] Diff of: cvs/gvpe/src/connection.C

Comparing gvpe/src/connection.C (file contents):
Revision 1.39 by pcg, Tue Oct 12 12:06:06 2004 UTC vs.
Revision 1.50 by pcg, Fri Mar 18 01:53:05 2005 UTC

 /*
     connection.C -- manage a single connection
-    Copyright (C) 2003-2004 Marc Lehmann <pcg@goof.com>
+    Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de>
+    This file is part of GVPE.
-    This program is free software; you can redistribute it and/or modify
+    GVPE is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
+    along with gvpe; if not, write to the Free Software
     Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
 #include "config.h"
 #include <openssl/rand.h>
 #include <openssl/evp.h>
 #include <openssl/rsa.h>
 #include <openssl/err.h>
-#include "gettext.h"
 #include "conf.h"
 #include "slog.h"
 #include "device.h"
 #include "vpn.h"
 {
   prot_major = PROTOCOL_MAJOR;
   prot_minor = PROTOCOL_MINOR;
   randsize = RAND_SIZE;
   hmaclen = HMACLENGTH;
-  flags = ENABLE_COMPRESSION ? 0x81 : 0x80;
+  flags = 0;
   challengelen = sizeof (rsachallenge);
   features = get_features ();
   cipher_nid = htonl (EVP_CIPHER_nid (CIPHER));
   digest_nid = htonl (EVP_MD_type (RSA_HASH));
     slog (L_WARN, _("major version mismatch (remote %d <=> local %d)"), prot_major, PROTOCOL_MAJOR);
   else if (randsize != RAND_SIZE)
     slog (L_WARN, _("rand size mismatch (remote %d <=> local %d)"), randsize, RAND_SIZE);
   else if (hmaclen != HMACLENGTH)
     slog (L_WARN, _("hmac length mismatch (remote %d <=> local %d)"), hmaclen, HMACLENGTH);
-#if 0 // this implementation should handle all flag settings
-  else if (flags != curflags ())
-    slog (L_WARN, _("flag mismatch (remote %x <=> local %x)"), flags, curflags ());
-#endif
   else if (challengelen != sizeof (rsachallenge))
     slog (L_WARN, _("challenge length mismatch (remote %d <=> local %d)"), challengelen, sizeof (rsachallenge));
   else if (cipher_nid != htonl (EVP_CIPHER_nid (CIPHER)))
     slog (L_WARN, _("cipher mismatch (remote %x <=> local %x)"), ntohl (cipher_nid), EVP_CIPHER_nid (CIPHER));
   else if (digest_nid != htonl (EVP_MD_type (RSA_HASH)))
   protocol = best_protocol (THISNODE->protocols & conf->protocols);
   // mask out protocols we cannot establish
   if (!conf->udp_port) protocol &= ~PROT_UDPv4;
   if (!conf->tcp_port) protocol &= ~PROT_TCPv4;
+  if (!conf->dns_port) protocol &= ~PROT_DNSv4;
   si.set (conf, protocol);
 }
 // ensure sockinfo is valid, forward if necessary
     {
       connection *r = vpn->find_router ();
       if (r)
         {
-          slog (L_DEBUG, _("%s: no common protocol, trying indirectly through %s"),
+          slog (L_DEBUG, _("%s: no common protocol, trying indirectly through %s (%s)"),
-                conf->nodename, r->conf->nodename);
+                conf->nodename, r->conf->nodename, (const char *)r->si);
           return r->si;
         }
       else
         slog (L_DEBUG, _("%s: node unreachable, no common protocol"),
               conf->nodename);
       && conf != THISNODE
       && connectmode != conf_node::C_NEVER
       && connectmode != conf_node::C_DISABLED
       && NOW > w.at)
     {
-      double retry_int = double (retry_cnt & 3 ? (retry_cnt & 3) : 1 << (retry_cnt >> 2)) * 0.6;
+      w.at = TSTAMP_MAX; // first disable this watcher in case of recursion
-      if (retry_int < conf->max_retry)
+      double retry_int = double (retry_cnt & 3
-        retry_cnt++;
+                                 ? (retry_cnt & 3) + 1
-      else
+                                 : 1 << (retry_cnt >> 2));
-        retry_int = conf->max_retry;
-      w.start (NOW + retry_int);
       reset_si ();
+      bool slow = si.prot & PROT_SLOW;
       if (si.prot && !si.host)
         vpn->send_connect_request (conf->id);
       else
         {
           const sockinfo &dsi = forward_si (si);
+          slow = slow || (dsi.prot & PROT_SLOW);
           if (dsi.valid () && auth_rate_limiter.can (dsi))
             {
               if (retry_cnt < 4)
                 send_auth_request (dsi, true);
               else
                 send_ping (dsi, 0);
             }
         }
+      retry_int *= slow ? 8. : 0.7;
+      if (retry_int < conf->max_retry)
+        retry_cnt++;
+      else
+        retry_int = conf->max_retry;
+      w.start (NOW + retry_int);
     }
 }
 void
 connection::reset_connection ()
         run_script (run_script_cb (this, &connection::script_node_down), false);
     }
   delete ictx; ictx = 0;
   delete octx; octx = 0;
+#if ENABLE_DNS
+  dnsv4_reset_connection ();
+#endif
   si.host = 0;
   last_activity = 0;
   retry_cnt = 0;
                     delete octx;
                     octx   = new crypto_ctx (k, 1);
                     oseqno = ntohl (*(u32 *)&k[CHG_SEQNO]) & 0x7fffffff;
-                    // compatibility code, remove when no longer required
-                    if (p->flags & 1) p->features |= FEATURE_COMPRESSION;
                     conf->protocols = p->protocols;
                     features = p->features & config_packet::get_features ();
                     send_auth_response (rsi, p->id, k);
   putenv ("STATE=down");
   return ::conf.script_node_up ? ::conf.script_node_down : "node-down";
 }
-connection::connection(struct vpn *vpn_)
+connection::connection (struct vpn *vpn, conf_node *conf)
-: vpn(vpn_)
+: vpn(vpn), conf(conf)
 , rekey (this, &connection::rekey_cb)
 , keepalive (this, &connection::keepalive_cb)
 , establish_connection (this, &connection::establish_connection_cb)
+#if ENABLE_DNS
+, dns (0)
+#endif
 {
   octx = ictx = 0;
   retry_cnt = 0;
+  if (!conf->protocols) // make sure some protocol is enabled
+    conf->protocols = PROT_UDPv4;
   connectmode = conf_node::C_ALWAYS; // initial setting
   reset_connection ();
 }
 connection::~connection ()

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Comparing gvpe/src/connection.C (file contents): Revision 1.39 by pcg, Tue Oct 12 12:06:06 2004 UTC vs. Revision 1.50 by pcg, Fri Mar 18 01:53:05 2005 UTC

Diff Legend

Comparing gvpe/src/connection.C (file contents):
Revision 1.39 by pcg, Tue Oct 12 12:06:06 2004 UTC vs.
Revision 1.50 by pcg, Fri Mar 18 01:53:05 2005 UTC