+#include "extract.h"
+
+#include "ip.h"
+
+static void pimv2_print(register const u_char *bp, register u_int len);
+
+static void
+pimv1_join_prune_print(register const u_char *bp, register u_int len)
+{
+ int maddrlen, addrlen, ngroups, njoin, nprune;
+ int njp;
+
+ /* If it's a single group and a single source, use 1-line output. */
+ if (TTEST2(bp[0], 30) && bp[11] == 1 &&
+ ((njoin = EXTRACT_16BITS(&bp[20])) + EXTRACT_16BITS(&bp[22])) == 1) {
+ int hold;
+
+ (void)printf(" RPF %s ", ipaddr_string(bp));
+ hold = EXTRACT_16BITS(&bp[6]);
+ if (hold != 180) {
+ (void)printf("Hold ");
+ relts_print(hold);
+ }
+ (void)printf("%s (%s/%d, %s", njoin ? "Join" : "Prune",
+ ipaddr_string(&bp[26]), bp[25] & 0x3f,
+ ipaddr_string(&bp[12]));
+ if (EXTRACT_32BITS(&bp[16]) != 0xffffffff)
+ (void)printf("/%s", ipaddr_string(&bp[16]));
+ (void)printf(") %s%s %s",
+ (bp[24] & 0x01) ? "Sparse" : "Dense",
+ (bp[25] & 0x80) ? " WC" : "",
+ (bp[25] & 0x40) ? "RP" : "SPT");
+ return;
+ }
+
+ TCHECK2(bp[0], 4);
+ if (vflag > 1)
+ (void)printf("\n");
+ (void)printf(" Upstream Nbr: %s", ipaddr_string(bp));
+ TCHECK2(bp[6], 2);
+ if (vflag > 1)
+ (void)printf("\n");
+ (void)printf(" Hold time: ");
+ relts_print(EXTRACT_16BITS(&bp[6]));
+ if (vflag < 2)
+ return;
+ bp += 8;
+ len -= 8;
+
+ TCHECK2(bp[0], 4);
+ maddrlen = bp[1];
+ addrlen = bp[2];
+ ngroups = bp[3];
+ bp += 4;
+ len -= 4;
+ while (ngroups--) {
+ TCHECK2(bp[0], 4);
+ (void)printf("\n\tGroup: %s", ipaddr_string(bp));
+ TCHECK2(bp[4], 4);
+ if (EXTRACT_32BITS(&bp[4]) != 0xffffffff)
+ (void)printf("/%s", ipaddr_string(&bp[4]));
+ TCHECK2(bp[8], 4);
+ njoin = EXTRACT_16BITS(&bp[8]);
+ nprune = EXTRACT_16BITS(&bp[10]);
+ (void)printf(" joined: %d pruned: %d", njoin, nprune);
+ bp += 12;
+ len -= 12;
+ for (njp = 0; njp < (njoin + nprune); njp++) {
+ const char *type;
+
+ if (njp < njoin)
+ type = "Join ";
+ else
+ type = "Prune";
+ TCHECK2(bp[0], 6);
+ (void)printf("\n\t%s %s%s%s%s/%d", type,
+ (bp[0] & 0x01) ? "Sparse " : "Dense ",
+ (bp[1] & 0x80) ? "WC " : "",
+ (bp[1] & 0x40) ? "RP " : "SPT ",
+ ipaddr_string(&bp[2]), bp[1] & 0x3f);
+ bp += 6;
+ len -= 6;
+ }
+ }
+ return;
+trunc:
+ (void)printf("[|pim]");
+ return;
+}
+
+void
+pimv1_print(register const u_char *bp, register u_int len)
+{
+ register const u_char *ep;
+ register u_char type;
+
+ ep = (const u_char *)snapend;
+ if (bp >= ep)
+ return;
+
+ TCHECK(bp[1]);
+ type = bp[1];
+
+ switch (type) {
+ case 0:
+ (void)printf(" Query");
+ if (TTEST(bp[8])) {
+ switch (bp[8] >> 4) {
+ case 0:
+ (void)printf(" Dense-mode");
+ break;
+ case 1:
+ (void)printf(" Sparse-mode");
+ break;
+ case 2:
+ (void)printf(" Sparse-Dense-mode");
+ break;
+ default:
+ (void)printf(" mode-%d", bp[8] >> 4);
+ break;
+ }
+ }
+ if (vflag) {
+ TCHECK2(bp[10],2);
+ (void)printf(" (Hold-time ");
+ relts_print(EXTRACT_16BITS(&bp[10]));
+ (void)printf(")");
+ }
+ break;
+
+ case 1:
+ (void)printf(" Register");
+ TCHECK2(bp[8], 20); /* ip header */
+ (void)printf(" for %s > %s", ipaddr_string(&bp[20]),
+ ipaddr_string(&bp[24]));
+ break;
+ case 2:
+ (void)printf(" Register-Stop");
+ TCHECK2(bp[12], 4);
+ (void)printf(" for %s > %s", ipaddr_string(&bp[8]),
+ ipaddr_string(&bp[12]));
+ break;
+ case 3:
+ (void)printf(" Join/Prune");
+ if (vflag)
+ pimv1_join_prune_print(&bp[8], len - 8);
+ break;
+ case 4:
+ (void)printf(" RP-reachable");
+ if (vflag) {
+ TCHECK2(bp[22], 2);
+ (void)printf(" group %s",
+ ipaddr_string(&bp[8]));
+ if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
+ (void)printf("/%s", ipaddr_string(&bp[12]));
+ (void)printf(" RP %s hold ", ipaddr_string(&bp[16]));
+ relts_print(EXTRACT_16BITS(&bp[22]));
+ }
+ break;
+ case 5:
+ (void)printf(" Assert");
+ TCHECK2(bp[16], 4);
+ (void)printf(" for %s > %s", ipaddr_string(&bp[16]),
+ ipaddr_string(&bp[8]));
+ if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
+ (void)printf("/%s", ipaddr_string(&bp[12]));
+ TCHECK2(bp[24], 4);
+ (void)printf(" %s pref %d metric %d",
+ (bp[20] & 0x80) ? "RP-tree" : "SPT",
+ EXTRACT_32BITS(&bp[20]) & 0x7fffffff,
+ EXTRACT_32BITS(&bp[24]));
+ break;
+ case 6:
+ (void)printf(" Graft");
+ if (vflag)
+ pimv1_join_prune_print(&bp[8], len - 8);
+ break;
+ case 7:
+ (void)printf(" Graft-ACK");
+ if (vflag)
+ pimv1_join_prune_print(&bp[8], len - 8);
+ break;
+ case 8:
+ (void)printf(" Mode");
+ break;
+ default:
+ (void)printf(" [type %d]", type);
+ break;
+ }
+ if ((bp[4] >> 4) != 1)
+ (void)printf(" [v%d]", bp[4] >> 4);
+ return;
+
+trunc:
+ (void)printf("[|pim]");
+ return;
+}
+
+/*
+ * auto-RP is a cisco protocol, documented at
+ * ftp://ftpeng.cisco.com/ipmulticast/specs/pim-autorp-spec01.txt
+ *
+ * This implements version 1+, dated Sept 9, 1998.
+ */
+void
+cisco_autorp_print(register const u_char *bp, register u_int len)
+{
+ int type;
+ int numrps;
+ int hold;
+
+ TCHECK(bp[0]);
+ (void)printf(" auto-rp ");
+ type = bp[0];
+ switch (type) {
+ case 0x11:
+ (void)printf("candidate-advert");
+ break;
+ case 0x12:
+ (void)printf("mapping");
+ break;
+ default:
+ (void)printf("type-0x%02x", type);
+ break;
+ }
+
+ TCHECK(bp[1]);
+ numrps = bp[1];
+
+ TCHECK2(bp[2], 2);
+ (void)printf(" Hold ");
+ hold = EXTRACT_16BITS(&bp[2]);
+ if (hold)
+ relts_print(EXTRACT_16BITS(&bp[2]));
+ else
+ printf("FOREVER");
+
+ /* Next 4 bytes are reserved. */
+
+ bp += 8; len -= 8;
+
+ /*XXX skip unless -v? */
+
+ /*
+ * Rest of packet:
+ * numrps entries of the form:
+ * 32 bits: RP
+ * 6 bits: reserved
+ * 2 bits: PIM version supported, bit 0 is "supports v1", 1 is "v2".
+ * 8 bits: # of entries for this RP
+ * each entry: 7 bits: reserved, 1 bit: negative,
+ * 8 bits: mask 32 bits: source
+ * lather, rinse, repeat.
+ */
+ while (numrps--) {
+ int nentries;
+ char s;
+
+ TCHECK2(bp[0], 4);
+ (void)printf(" RP %s", ipaddr_string(bp));
+ TCHECK(bp[4]);
+ switch (bp[4] & 0x3) {
+ case 0: printf(" PIMv?");
+ break;
+ case 1: printf(" PIMv1");
+ break;
+ case 2: printf(" PIMv2");
+ break;
+ case 3: printf(" PIMv1+2");
+ break;
+ }
+ if (bp[4] & 0xfc)
+ (void)printf(" [rsvd=0x%02x]", bp[4] & 0xfc);
+ TCHECK(bp[5]);
+ nentries = bp[5];
+ bp += 6; len -= 6;
+ s = ' ';
+ for (; nentries; nentries--) {
+ TCHECK2(bp[0], 6);
+ (void)printf("%c%s%s/%d", s, bp[0] & 1 ? "!" : "",
+ ipaddr_string(&bp[2]), bp[1]);
+ if (bp[0] & 0xfe)
+ (void)printf("[rsvd=0x%02x]", bp[0] & 0xfe);
+ s = ',';
+ bp += 6; len -= 6;
+ }
+ }
+ return;
+
+trunc:
+ (void)printf("[|autorp]");
+ return;
+}
projects / tcpdump / blobdiff