Define logger(), cleans up source code and allows us to write log entries

[tinc] / src / route.c

diff --git a/src/route.c b/src/route.c
index 261462e..1fd1d8e 100644 (file)
--- a/src/route.c
+++ b/src/route.c
@@ -17,7 +17,7 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: route.c,v 1.1.2.51 2003/06/11 19:40:43 guus Exp $
+    $Id: route.c,v 1.1.2.54 2003/07/06 22:11:33 guus Exp $
 */
 
 #include "config.h"
@@ -38,12 +38,13 @@
 #endif
 #include <netinet/ip.h>
 #include <netinet/ip_icmp.h>
+#ifdef HAVE_NETINET_IP6_H
 #include <netinet/ip6.h>
 #include <netinet/icmp6.h>
+#endif
 #include <netinet/if_ether.h>
 #include <utils.h>
 #include <xalloc.h>
-#include <syslog.h>
 #include <string.h>
 #ifdef HAVE_INTTYPES_H
 #include <inttypes.h>
@@ -57,13 +58,28 @@
 #include "route.h"
 #include "protocol.h"
 #include "device.h"
+#include "logger.h"
 
 #include "system.h"
 
+/* Missing definitions */
+
 #ifndef ETHER_ADDR_LEN
 #define ETHER_ADDR_LEN 6
 #endif
 
+#ifndef ICMP_DEST_UNREACH
+#define ICMP_DEST_UNREACH 3
+#endif
+
+#ifndef ICMP_NET_UNKNOWN
+#define ICMP_NET_UNKNOWN 6
+#endif
+
+#ifndef ICMP_NET_UNREACH
+#define ICMP_NET_UNREACH 0
+#endif
+
 int routing_mode = RMODE_ROUTER;
 int priorityinheritance = 0;
 int macexpire = 600;
@@ -114,8 +130,7 @@ void learn_mac(mac_t *address)
        /* If we don't know this MAC address yet, store it */
 
        if(!subnet || subnet->owner != myself) {
-               if(debug_lvl >= DEBUG_TRAFFIC)
-                       syslog(LOG_INFO, _("Learned new MAC address %hx:%hx:%hx:%hx:%hx:%hx"),
+               logger(DEBUG_TRAFFIC, LOG_INFO, _("Learned new MAC address %hx:%hx:%hx:%hx:%hx:%hx"),
                                   address->x[0], address->x[1], address->x[2], address->x[3],
                                   address->x[4], address->x[5]);
 
@@ -148,8 +163,7 @@ void age_mac(void)
                next = node->next;
                s = (subnet_t *) node->data;
                if(s->type == SUBNET_MAC && s->net.mac.lastseen && s->net.mac.lastseen + macexpire < now) {
-                       if(debug_lvl >= DEBUG_TRAFFIC)
-                               syslog(LOG_INFO, _("MAC address %hx:%hx:%hx:%hx:%hx:%hx expired"),
+                       logger(DEBUG_TRAFFIC, LOG_INFO, _("MAC address %hx:%hx:%hx:%hx:%hx:%hx expired"),
                                           s->net.mac.address.x[0], s->net.mac.address.x[1],
                                           s->net.mac.address.x[2], s->net.mac.address.x[3],
                                           s->net.mac.address.x[4], s->net.mac.address.x[5]);
@@ -210,8 +224,8 @@ void route_ipv4_unreachable(vpn_packet_t *packet, uint8_t code)
        memcpy(&ip_dst, &hdr->ip_dst, 4);
        oldlen = packet->len - 14;
        
-       if(oldlen >= IP_MSS - sizeof(*hdr) - sizeof(struct icmphdr))
-               oldlen = IP_MSS - sizeof(*hdr) - sizeof(struct icmphdr);
+       if(oldlen >= IP_MSS - sizeof(*hdr) - sizeof(*icmp))
+               oldlen = IP_MSS - sizeof(*hdr) - sizeof(*icmp);
        
        /* Copy first part of original contents to ICMP message */
        
@@ -258,11 +272,9 @@ node_t *route_ipv4(vpn_packet_t *packet)
        subnet = lookup_subnet_ipv4((ipv4_t *) & packet->data[30]);
 
        if(!subnet) {
-               if(debug_lvl >= DEBUG_TRAFFIC) {
-                       syslog(LOG_WARNING, _("Cannot route packet: unknown IPv4 destination address %d.%d.%d.%d"),
+               logger(DEBUG_TRAFFIC, LOG_WARNING, _("Cannot route packet: unknown IPv4 destination address %d.%d.%d.%d"),
                                   packet->data[30], packet->data[31], packet->data[32],
                                   packet->data[33]);
-               }
 
                route_ipv4_unreachable(packet, ICMP_NET_UNKNOWN);
                return NULL;
@@ -274,6 +286,8 @@ node_t *route_ipv4(vpn_packet_t *packet)
        return subnet->owner;
 }
 
+#ifdef HAVE_NETINET_IP6_H
+
 /* RFC 2463 */
 
 void route_ipv6_unreachable(vpn_packet_t *packet, uint8_t code)
@@ -342,6 +356,8 @@ void route_ipv6_unreachable(vpn_packet_t *packet, uint8_t code)
        write_packet(packet);
 }
 
+#endif
+
 node_t *route_ipv6(vpn_packet_t *packet)
 {
        subnet_t *subnet;
@@ -351,8 +367,7 @@ node_t *route_ipv6(vpn_packet_t *packet)
        subnet = lookup_subnet_ipv6((ipv6_t *) & packet->data[38]);
 
        if(!subnet) {
-               if(debug_lvl >= DEBUG_TRAFFIC) {
-                       syslog(LOG_WARNING, _("Cannot route packet: unknown IPv6 destination address %hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx"),
+               logger(DEBUG_TRAFFIC, LOG_WARNING, _("Cannot route packet: unknown IPv6 destination address %hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx"),
                                   ntohs(*(uint16_t *) & packet->data[38]),
                                   ntohs(*(uint16_t *) & packet->data[40]),
                                   ntohs(*(uint16_t *) & packet->data[42]),
@@ -361,18 +376,23 @@ node_t *route_ipv6(vpn_packet_t *packet)
                                   ntohs(*(uint16_t *) & packet->data[48]),
                                   ntohs(*(uint16_t *) & packet->data[50]),
                                   ntohs(*(uint16_t *) & packet->data[52]));
-               }
+#ifdef HAVE_NETINET_IP6_H
                route_ipv6_unreachable(packet, ICMP6_DST_UNREACH_ADDR);
+#endif
 
                return NULL;
        }
 
+#ifdef HAVE_NETINET_IP6_H
        if(!subnet->owner->status.reachable)
                route_ipv6_unreachable(packet, ICMP6_DST_UNREACH_NOROUTE);
-
+#endif
+       
        return subnet->owner;
 }
 
+#ifdef HAVE_NETINET_IP6_H
+
 /* RFC 2461 */
 
 void route_neighborsol(vpn_packet_t *packet)
@@ -405,9 +425,7 @@ void route_neighborsol(vpn_packet_t *packet)
 
        if(ns->nd_ns_hdr.icmp6_type != ND_NEIGHBOR_SOLICIT ||
           opt->nd_opt_type != ND_OPT_SOURCE_LINKADDR) {
-               if(debug_lvl > DEBUG_TRAFFIC) {
-                       syslog(LOG_WARNING, _("Cannot route packet: received unknown type neighbor solicitation request"));
-               }
+               logger(DEBUG_TRAFFIC, LOG_WARNING, _("Cannot route packet: received unknown type neighbor solicitation request"));
                return;
        }
 
@@ -424,8 +442,7 @@ void route_neighborsol(vpn_packet_t *packet)
        checksum = inet_checksum(ns, sizeof(*ns) + 8, checksum);
 
        if(checksum) {
-               if(debug_lvl >= DEBUG_TRAFFIC)
-                       syslog(LOG_WARNING, _("Cannot route packet: checksum error for neighbor solicitation request"));
+               logger(DEBUG_TRAFFIC, LOG_WARNING, _("Cannot route packet: checksum error for neighbor solicitation request"));
                return;
        }
 
@@ -434,8 +451,7 @@ void route_neighborsol(vpn_packet_t *packet)
        subnet = lookup_subnet_ipv6((ipv6_t *) & ns->nd_ns_target);
 
        if(!subnet) {
-               if(debug_lvl >= DEBUG_TRAFFIC) {
-                       syslog(LOG_WARNING, _("Cannot route packet: neighbor solicitation request for unknown address %hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx"),
+               logger(DEBUG_TRAFFIC, LOG_WARNING, _("Cannot route packet: neighbor solicitation request for unknown address %hx:%hx:%hx:%hx:%hx:%hx:%hx:%hx"),
                                   ntohs(((uint16_t *) & ns->nd_ns_target)[0]),
                                   ntohs(((uint16_t *) & ns->nd_ns_target)[1]),
                                   ntohs(((uint16_t *) & ns->nd_ns_target)[2]),
@@ -444,7 +460,6 @@ void route_neighborsol(vpn_packet_t *packet)
                                   ntohs(((uint16_t *) & ns->nd_ns_target)[5]),
                                   ntohs(((uint16_t *) & ns->nd_ns_target)[6]),
                                   ntohs(((uint16_t *) & ns->nd_ns_target)[7]));
-               }
 
                return;
        }
@@ -489,6 +504,8 @@ void route_neighborsol(vpn_packet_t *packet)
        write_packet(packet);
 }
 
+#endif
+
 /* RFC 826 */
 
 void route_arp(vpn_packet_t *packet)
@@ -515,9 +532,7 @@ void route_arp(vpn_packet_t *packet)
 
        if(ntohs(arp->arp_hrd) != ARPHRD_ETHER || ntohs(arp->arp_pro) != ETHERTYPE_IP ||
           arp->arp_hln != ETHER_ADDR_LEN || arp->arp_pln != 4 || ntohs(arp->arp_op) != ARPOP_REQUEST) {
-               if(debug_lvl > DEBUG_TRAFFIC) {
-                       syslog(LOG_WARNING, _("Cannot route packet: received unknown type ARP request"));
-               }
+               logger(DEBUG_TRAFFIC, LOG_WARNING, _("Cannot route packet: received unknown type ARP request"));
                return;
        }
 
@@ -526,12 +541,9 @@ void route_arp(vpn_packet_t *packet)
        subnet = lookup_subnet_ipv4((ipv4_t *) arp->arp_tpa);
 
        if(!subnet) {
-               if(debug_lvl >= DEBUG_TRAFFIC) {
-                       syslog(LOG_WARNING, _("Cannot route packet: ARP request for unknown address %d.%d.%d.%d"),
+               logger(DEBUG_TRAFFIC, LOG_WARNING, _("Cannot route packet: ARP request for unknown address %d.%d.%d.%d"),
                                   arp->arp_tpa[0], arp->arp_tpa[1], arp->arp_tpa[2],
                                   arp->arp_tpa[3]);
-               }
-
                return;
        }
 
@@ -572,10 +584,12 @@ void route_outgoing(vpn_packet_t *packet)
                                        break;
 
                                case 0x86DD:
+#ifdef HAVE_NETINET_IP6_H
                                        if(packet->data[20] == IPPROTO_ICMPV6 && packet->data[54] == ND_NEIGHBOR_SOLICIT) {
                                                route_neighborsol(packet);
                                                return;
                                        }
+#endif
                                        n = route_ipv6(packet);
                                        break;
 
@@ -584,8 +598,7 @@ void route_outgoing(vpn_packet_t *packet)
                                        return;
 
                                default:
-                                       if(debug_lvl >= DEBUG_TRAFFIC)
-                                               syslog(LOG_WARNING, _("Cannot route packet: unknown type %hx"), type);
+                                       logger(DEBUG_TRAFFIC, LOG_WARNING, _("Cannot route packet: unknown type %hx"), type);
                                        return;
                        }
                        if(n)