--- /dev/null
+/*
+ * $Id$
+ *
+ * Authors:
+ * Lars Fenneberg <lf@elemental.net>
+ * Marko Myllynen <myllynen@lut.fi>
+ *
+ * This software is Copyright 1996-2000 by the above mentioned author(s),
+ * All Rights Reserved.
+ *
+ * The license which is distributed with this software in the file COPYRIGHT
+ * applies to this software. If your distribution is missing this file, you
+ * may request it from <pekkas@netcore.fi>.
+ *
+ */
+
+#include <config.h>
+#include <includes.h>
+#include <radvd.h>
+
+char usage_str[] = "[-vhfe] [-d level]";
+
+#ifdef HAVE_GETOPT_LONG
+struct option prog_opt[] = {
+ {"debug", 1, 0, 'd'},
+ {"file-format", 0, 0, 'f'},
+ {"exclude-defaults", 0, 0, 'e'},
+ {"version", 0, 0, 'v'},
+ {"help", 0, 0, 'h'},
+ {NULL, 0, 0, 0}
+};
+#endif
+
+char *pname;
+int sock = -1;
+
+void version(void);
+void usage(void);
+void print_ff(unsigned char *, int, struct sockaddr_in6 *, int, unsigned int, int);
+void print_preferences(int);
+
+int
+main(int argc, char *argv[])
+{
+ unsigned char msg[MSG_SIZE];
+ int c, len, hoplimit;
+ int edefs = 0;
+ struct sockaddr_in6 rcv_addr;
+ struct in6_pktinfo *pkt_info = NULL;
+#ifdef HAVE_GETOPT_LONG
+ int opt_idx;
+#endif
+
+ pname = ((pname=strrchr(argv[0],'/')) != NULL)?pname+1:argv[0];
+
+ /* parse args */
+#ifdef HAVE_GETOPT_LONG
+ while ((c = getopt_long(argc, argv, "d:fehv", prog_opt, &opt_idx)) > 0)
+#else
+ while ((c = getopt(argc, argv, "d:fehv")) > 0)
+#endif
+ {
+ switch (c) {
+ case 'd':
+ set_debuglevel(atoi(optarg));
+ break;
+ case 'f':
+ break;
+ case 'e':
+ edefs = 1;
+ break;
+ case 'v':
+ version();
+ break;
+ case 'h':
+ usage();
+#ifdef HAVE_GETOPT_LONG
+ case ':':
+ fprintf(stderr, "%s: option %s: parameter expected\n", pname,
+ prog_opt[opt_idx].name);
+ exit(1);
+#endif
+ case '?':
+ exit(1);
+ }
+ }
+
+ if (log_open(L_STDERR, pname, NULL, 0) < 0)
+ exit(1);
+
+ /* get a raw socket for sending and receiving ICMPv6 messages */
+ sock = open_icmpv6_socket();
+ if (sock < 0)
+ exit(1);
+
+ for(;;)
+ {
+ len = recv_rs_ra(sock, msg, &rcv_addr, &pkt_info, &hoplimit);
+ if (len > 0)
+ {
+ struct icmp6_hdr *icmph;
+
+ /*
+ * can this happen?
+ */
+
+ if (len < sizeof(struct icmp6_hdr))
+ {
+ flog(LOG_WARNING, "received icmpv6 packet with invalid length: %d",
+ len);
+ exit(1);
+ }
+
+ icmph = (struct icmp6_hdr *) msg;
+
+ if (icmph->icmp6_type != ND_ROUTER_SOLICIT &&
+ icmph->icmp6_type != ND_ROUTER_ADVERT)
+ {
+ /*
+ * We just want to listen to RSs and RAs
+ */
+
+ flog(LOG_ERR, "icmpv6 filter failed");
+ exit(1);
+ }
+
+ dlog(LOG_DEBUG, 4, "receiver if_index: %u", pkt_info->ipi6_ifindex);
+
+ if (icmph->icmp6_type == ND_ROUTER_SOLICIT)
+ {
+ /* not yet */
+ }
+ else if (icmph->icmp6_type == ND_ROUTER_ADVERT)
+ print_ff(msg, len, &rcv_addr, hoplimit, (unsigned int)pkt_info->ipi6_ifindex, edefs);
+ }
+ else if (len == 0)
+ {
+ flog(LOG_ERR, "received zero lenght packet");
+ exit(1);
+ }
+ else
+ {
+ flog(LOG_ERR, "recv_rs_ra: %s", strerror(errno));
+ exit(1);
+ }
+ }
+
+ exit(0);
+}
+
+void
+print_ff(unsigned char *msg, int len, struct sockaddr_in6 *addr, int hoplimit, unsigned int if_index, int edefs)
+{
+ /* XXX: hoplimit not being used for anything here.. */
+ struct nd_router_advert *radvert;
+ char addr_str[INET6_ADDRSTRLEN];
+ uint8_t *opt_str;
+ int orig_len = len;
+ char if_name[IFNAMSIZ] = "";
+
+ print_addr(&addr->sin6_addr, addr_str);
+ printf("#\n# radvd configuration generated by radvdump %s\n", VERSION);
+ printf("# based on Router Advertisement from %s\n", addr_str);
+ if_indextoname(if_index, if_name);
+ printf("# received by interface %s\n", if_name);
+ printf("#\n\ninterface %s\n{\n\tAdvSendAdvert on;\n", if_name);
+
+ printf("\t# Note: {Min,Max}RtrAdvInterval cannot be obtained with radvdump\n");
+
+ radvert = (struct nd_router_advert *) msg;
+
+ if (!edefs || DFLT_AdvManagedFlag != (ND_RA_FLAG_MANAGED == (radvert->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED)))
+ printf("\tAdvManagedFlag %s;\n",
+ (radvert->nd_ra_flags_reserved & ND_RA_FLAG_MANAGED)?"on":"off");
+
+ if (!edefs || DFLT_AdvOtherConfigFlag != (ND_RA_FLAG_OTHER == (radvert->nd_ra_flags_reserved & ND_RA_FLAG_OTHER)))
+ printf("\tAdvOtherConfigFlag %s;\n",
+ (radvert->nd_ra_flags_reserved & ND_RA_FLAG_OTHER)?"on":"off");
+
+ if (!edefs || DFLT_AdvReachableTime != ntohl(radvert->nd_ra_reachable))
+ printf("\tAdvReachableTime %u;\n", ntohl(radvert->nd_ra_reachable));
+
+ if (!edefs || DFLT_AdvRetransTimer != ntohl(radvert->nd_ra_retransmit))
+ printf("\tAdvRetransTimer %u;\n", ntohl(radvert->nd_ra_retransmit));
+
+ if (!edefs || DFLT_AdvCurHopLimit != radvert->nd_ra_curhoplimit)
+ printf("\tAdvCurHopLimit %u;\n", radvert->nd_ra_curhoplimit);
+
+ /* Mobile IPv6 ext */
+ if (!edefs || DFLT_AdvHomeAgentFlag != (ND_RA_FLAG_HOME_AGENT == (radvert->nd_ra_flags_reserved & ND_RA_FLAG_HOME_AGENT)))
+ printf("\tAdvHomeAgentFlag %s;\n",
+ (radvert->nd_ra_flags_reserved & ND_RA_FLAG_HOME_AGENT)?"on":"off");
+
+ /* Route Preferences and more specific routes */
+ /* XXX two middlemost bits from 8 bit field */
+ if (!edefs || (((radvert->nd_ra_flags_reserved & 0x18) >> 3) & 0xff) != DFLT_AdvDefaultPreference) {
+ printf("\tAdvDefaultPreference ");
+ print_preferences(((radvert->nd_ra_flags_reserved & 0x18) >> 3) & 0xff);
+ printf(";\n");
+ }
+
+ len -= sizeof(struct nd_router_advert);
+
+ if (len == 0)
+ return;
+
+ opt_str = (uint8_t *)(msg + sizeof(struct nd_router_advert));
+
+ while (len > 0)
+ {
+ int optlen;
+ struct nd_opt_mtu *mtu;
+ struct HomeAgentInfo *ha_info;
+
+ if (len < 2)
+ {
+ flog(LOG_ERR, "trailing garbage in RA from %s",
+ addr_str);
+ break;
+ }
+
+ optlen = (opt_str[1] << 3);
+
+ if (optlen == 0)
+ {
+ flog(LOG_ERR, "zero length option in RA");
+ break;
+ }
+ else if (optlen > len)
+ {
+ flog(LOG_ERR, "option length greater than total"
+ " length in RA (type %d, optlen %d, len %d)",
+ (int)*opt_str, optlen, len);
+ break;
+ }
+
+ switch (*opt_str)
+ {
+ case ND_OPT_MTU:
+ mtu = (struct nd_opt_mtu *)opt_str;
+
+ if (!edefs || DFLT_AdvLinkMTU != ntohl(mtu->nd_opt_mtu_mtu))
+ printf("\tAdvLinkMTU %u;\n", ntohl(mtu->nd_opt_mtu_mtu));
+ break;
+ case ND_OPT_SOURCE_LINKADDR:
+ /* XXX: !DFLT depends on current DFLT_ value */
+ if (!edefs || !DFLT_AdvSourceLLAddress)
+ printf("\tAdvSourceLLAddress on;\n");
+ break;
+ /* Mobile IPv6 ext */
+ case ND_OPT_RTR_ADV_INTERVAL:
+ /* XXX: !DFLT depends on current DFLT_ value */
+ if (!edefs || !DFLT_AdvIntervalOpt)
+ printf("\tAdvIntervalOpt on;\n");
+ break;
+ /* Mobile IPv6 ext */
+ case ND_OPT_HOME_AGENT_INFO:
+ ha_info = (struct HomeAgentInfo *)opt_str;
+
+ /* XXX: we check DFLT_HomeAgentInfo by interface, and it's outside
+ of context here, so we always need to print it out.. */
+ printf("\tAdvHomeAgentInfo on;\n");
+
+ /* NEMO ext */
+ if (!edefs || DFLT_AdvMobRtrSupportFlag != (ha_info->flags_reserved & ND_OPT_HAI_FLAG_SUPPORT_MR))
+ printf("\tAdvMobRtrSupportFlag %s;\n", (ha_info->flags_reserved & ND_OPT_HAI_FLAG_SUPPORT_MR)?"on":"off");
+
+ if (!edefs || DFLT_HomeAgentPreference != ntohs(ha_info->preference))
+ printf("\tHomeAgentPreference %hu;\n", ntohs(ha_info->preference));
+ /* Hum.. */
+ if (!edefs || (3*DFLT_MaxRtrAdvInterval) != ntohs(ha_info->lifetime))
+ printf("\tHomeAgentLifetime %hu;\n", ntohs(ha_info->lifetime));
+ break;
+ case ND_OPT_TARGET_LINKADDR:
+ case ND_OPT_REDIRECTED_HEADER:
+ flog(LOG_ERR, "invalid option %d in RA", (int)*opt_str);
+ break;
+ case ND_OPT_PREFIX_INFORMATION:
+ break;
+ case ND_OPT_ROUTE_INFORMATION:
+ break;
+ case ND_OPT_RDNSS_INFORMATION:
+ break;
+ default:
+ dlog(LOG_DEBUG, 1, "unknown option %d in RA",
+ (int)*opt_str);
+ break;
+ }
+
+ len -= optlen;
+ opt_str += optlen;
+ }
+
+ orig_len -= sizeof(struct nd_router_advert);
+
+ if (orig_len == 0)
+ return;
+
+ opt_str = (uint8_t *)(msg + sizeof(struct nd_router_advert));
+
+ while (orig_len > 0)
+ {
+ int optlen;
+ struct nd_opt_prefix_info *pinfo;
+ struct nd_opt_route_info_local *rinfo;
+ struct nd_opt_rdnss_info_local *rdnss_info;
+ char prefix_str[INET6_ADDRSTRLEN];
+
+ if (orig_len < 2)
+ {
+ flog(LOG_ERR, "trailing garbage in RA from %s",
+ addr_str);
+ break;
+ }
+
+ optlen = (opt_str[1] << 3);
+
+ if (optlen == 0)
+ {
+ flog(LOG_ERR, "zero length option in RA");
+ break;
+ }
+ else if (optlen > orig_len)
+ {
+ flog(LOG_ERR, "option length greater than total"
+ " length in RA (type %d, optlen %d, len %d)",
+ (int)*opt_str, optlen, orig_len);
+ break;
+ }
+
+ switch (*opt_str)
+ {
+ case ND_OPT_PREFIX_INFORMATION:
+ pinfo = (struct nd_opt_prefix_info *) opt_str;
+
+ print_addr(&pinfo->nd_opt_pi_prefix, prefix_str);
+
+ printf("\n\tprefix %s/%d\n\t{\n", prefix_str, pinfo->nd_opt_pi_prefix_len);
+
+ if (ntohl(pinfo->nd_opt_pi_valid_time) == 0xffffffff)
+ {
+ if (!edefs || DFLT_AdvValidLifetime != 0xffffffff)
+ printf("\t\tAdvValidLifetime infinity; # (0xffffffff)\n");
+ }
+ else
+ {
+ if (!edefs || DFLT_AdvValidLifetime != ntohl(pinfo->nd_opt_pi_valid_time))
+ printf("\t\tAdvValidLifetime %u;\n", ntohl(pinfo->nd_opt_pi_valid_time));
+ }
+ if (ntohl(pinfo->nd_opt_pi_preferred_time) == 0xffffffff)
+ {
+ if (!edefs || DFLT_AdvPreferredLifetime != 0xffffffff)
+ printf("\t\tAdvPreferredLifetime infinity; # (0xffffffff)\n");
+ }
+ else
+ {
+ if (!edefs || DFLT_AdvPreferredLifetime != ntohl(pinfo->nd_opt_pi_preferred_time))
+ printf("\t\tAdvPreferredLifetime %u;\n", ntohl(pinfo->nd_opt_pi_preferred_time));
+ }
+
+ if (!edefs || DFLT_AdvOnLinkFlag != (ND_OPT_PI_FLAG_ONLINK == (pinfo->nd_opt_pi_flags_reserved & ND_OPT_PI_FLAG_ONLINK)))
+ printf("\t\tAdvOnLink %s;\n",
+ (pinfo->nd_opt_pi_flags_reserved & ND_OPT_PI_FLAG_ONLINK)?"on":"off");
+
+ if (!edefs || DFLT_AdvAutonomousFlag != (ND_OPT_PI_FLAG_AUTO == (pinfo->nd_opt_pi_flags_reserved & ND_OPT_PI_FLAG_AUTO)))
+ printf("\t\tAdvAutonomous %s;\n",
+ (pinfo->nd_opt_pi_flags_reserved & ND_OPT_PI_FLAG_AUTO)?"on":"off");
+
+ /* Mobile IPv6 ext */
+ if (!edefs || DFLT_AdvRouterAddr != (ND_OPT_PI_FLAG_RADDR == (pinfo->nd_opt_pi_flags_reserved & ND_OPT_PI_FLAG_RADDR)))
+ printf("\t\tAdvRouterAddr %s;\n",
+ (pinfo->nd_opt_pi_flags_reserved & ND_OPT_PI_FLAG_RADDR)?"on":"off");
+
+ printf("\t}; # End of prefix definition\n\n");
+ break;
+ case ND_OPT_ROUTE_INFORMATION:
+ rinfo = (struct nd_opt_route_info_local *) opt_str;
+
+ print_addr(&rinfo->nd_opt_ri_prefix, prefix_str);
+
+ printf("\n\troute %s/%d\n\t{\n", prefix_str, rinfo->nd_opt_ri_prefix_len);
+
+ if (!edefs || (((radvert->nd_ra_flags_reserved & 0x18) >> 3) & 0xff) != DFLT_AdvRoutePreference) {
+ printf("\t\tAdvRoutePreference ");
+ print_preferences(((rinfo->nd_opt_ri_flags_reserved & 0x18) >> 3) & 0xff);
+ printf(";\n");
+ }
+
+ /* XXX: we check DFLT_AdvRouteLifetime by interface, and it's outside of context here */
+ if (ntohl(rinfo->nd_opt_ri_lifetime) == 0xffffffff)
+ printf("\t\tAdvRouteLifetime infinity; # (0xffffffff)\n");
+ else
+ printf("\t\tAdvRouteLifetime %u;\n", ntohl(rinfo->nd_opt_ri_lifetime));
+
+ printf("\t}; # End of route definition\n\n");
+ break;
+ case ND_OPT_RDNSS_INFORMATION:
+ rdnss_info = (struct nd_opt_rdnss_info_local *) opt_str;
+
+ printf("\n\tRDNSS");
+
+ print_addr(&rdnss_info->nd_opt_rdnssi_addr1, prefix_str);
+ printf(" %s", prefix_str);
+
+ if (rdnss_info->nd_opt_rdnssi_len >= 5) {
+ print_addr(&rdnss_info->nd_opt_rdnssi_addr2, prefix_str);
+ printf(" %s", prefix_str);
+ }
+ if (rdnss_info->nd_opt_rdnssi_len >= 7) {
+ print_addr(&rdnss_info->nd_opt_rdnssi_addr3, prefix_str);
+ printf(" %s", prefix_str);
+ }
+
+ printf("\n\t{\n");
+ if (!edefs
+ || ((rdnss_info->nd_opt_rdnssi_pref_flag_reserved & ND_OPT_RDNSSI_PREF_MASK) >> ND_OPT_RDNSSI_PREF_SHIFT) != DFLT_AdvRDNSSPreference)
+ printf("\t\tAdvRDNSSPreference %d;\n",
+ (rdnss_info->nd_opt_rdnssi_pref_flag_reserved & ND_OPT_RDNSSI_PREF_MASK) >> ND_OPT_RDNSSI_PREF_SHIFT);
+
+ if (!edefs
+ || ((rdnss_info->nd_opt_rdnssi_pref_flag_reserved & ND_OPT_RDNSSI_FLAG_S) == 0 ) == DFLT_AdvRDNSSOpenFlag)
+ printf("\t\tAdvRDNSSOpen %s;\n", rdnss_info->nd_opt_rdnssi_pref_flag_reserved & ND_OPT_RDNSSI_FLAG_S ? "on" : "off");
+
+ /* as AdvRDNSSLifetime may depend on MaxRtrAdvInterval, it could change */
+ if (ntohl(rdnss_info->nd_opt_rdnssi_lifetime) == 0xffffffff)
+ printf("\t\tAdvRDNSSLifetime infinity; # (0xffffffff)\n");
+ else
+ printf("\t\tAdvRDNSSLifetime %u;\n", ntohl(rdnss_info->nd_opt_rdnssi_lifetime));
+
+ printf("\t}; # End of RDNSS definition\n\n");
+ break;
+ default:
+ break;
+ }
+ orig_len -= optlen;
+ opt_str += optlen;
+ }
+
+ printf("}; # End of interface definition\n");
+
+ fflush(stdout);
+}
+
+void
+print_preferences(int p)
+{
+ switch (p) {
+ case 0:
+ printf("medium");
+ break;
+ case 1:
+ printf("high");
+ break;
+ case 2:
+ /* reserved, ignore */
+ break;
+ case 3:
+ printf("low");
+ break;
+ }
+}
+
+void
+version(void)
+{
+ fprintf(stderr,"Version: %s\n\n", VERSION);
+ fprintf(stderr,"Please send bug reports and suggestions to %s\n",
+ CONTACT_EMAIL);
+ exit(1);
+}
+
+void
+usage(void)
+{
+ fprintf(stderr,"usage: %s %s\n", pname, usage_str);
+ exit(1);
+}
projects / tinyos-2.x.git / blobdiff