/* * Copyright: (c) 2000 United States Government as represented by the * Secretary of the Navy. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. The names of the authors may not be used to endorse or promote * products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ /* \summary: AFS RX printer */ /* * This code unmangles RX packets. RX is the mutant form of RPC that AFS * uses to communicate between clients and servers. * * In this code, I mainly concern myself with decoding the AFS calls, not * with the guts of RX, per se. * * Bah. If I never look at rx_packet.h again, it will be too soon. * * Ken Hornstein */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include "netdissect.h" #include "addrtoname.h" #include "extract.h" #include "ip.h" #define FS_RX_PORT 7000 #define CB_RX_PORT 7001 #define PROT_RX_PORT 7002 #define VLDB_RX_PORT 7003 #define KAUTH_RX_PORT 7004 #define VOL_RX_PORT 7005 #define ERROR_RX_PORT 7006 /* Doesn't seem to be used */ #define BOS_RX_PORT 7007 #define AFSNAMEMAX 256 #define AFSOPAQUEMAX 1024 #define PRNAMEMAX 64 #define VLNAMEMAX 65 #define KANAMEMAX 64 #define BOSNAMEMAX 256 #define PRSFS_READ 1 /* Read files */ #define PRSFS_WRITE 2 /* Write files */ #define PRSFS_INSERT 4 /* Insert files into a directory */ #define PRSFS_LOOKUP 8 /* Lookup files into a directory */ #define PRSFS_DELETE 16 /* Delete files */ #define PRSFS_LOCK 32 /* Lock files */ #define PRSFS_ADMINISTER 64 /* Change ACL's */ struct rx_header { uint32_t epoch; uint32_t cid; uint32_t callNumber; uint32_t seq; uint32_t serial; uint8_t type; #define RX_PACKET_TYPE_DATA 1 #define RX_PACKET_TYPE_ACK 2 #define RX_PACKET_TYPE_BUSY 3 #define RX_PACKET_TYPE_ABORT 4 #define RX_PACKET_TYPE_ACKALL 5 #define RX_PACKET_TYPE_CHALLENGE 6 #define RX_PACKET_TYPE_RESPONSE 7 #define RX_PACKET_TYPE_DEBUG 8 #define RX_PACKET_TYPE_PARAMS 9 #define RX_PACKET_TYPE_VERSION 13 uint8_t flags; #define RX_CLIENT_INITIATED 1 #define RX_REQUEST_ACK 2 #define RX_LAST_PACKET 4 #define RX_MORE_PACKETS 8 #define RX_FREE_PACKET 16 #define RX_SLOW_START_OK 32 #define RX_JUMBO_PACKET 32 uint8_t userStatus; uint8_t securityIndex; uint16_t spare; /* How clever: even though the AFS */ uint16_t serviceId; /* header files indicate that the */ }; /* serviceId is first, it's really */ /* encoded _after_ the spare field */ /* I wasted a day figuring that out! */ #define NUM_RX_FLAGS 7 #define RX_MAXACKS 255 struct rx_ackPacket { uint16_t bufferSpace; /* Number of packet buffers available */ uint16_t maxSkew; /* Max diff between ack'd packet and */ /* highest packet received */ uint32_t firstPacket; /* The first packet in ack list */ uint32_t previousPacket; /* Previous packet recv'd (obsolete) */ uint32_t serial; /* # of packet that prompted the ack */ uint8_t reason; /* Reason for acknowledgement */ uint8_t nAcks; /* Number of acknowledgements */ uint8_t acks[RX_MAXACKS]; /* Up to RX_MAXACKS acknowledgements */ }; /* * Values for the acks array */ #define RX_ACK_TYPE_NACK 0 /* Don't have this packet */ #define RX_ACK_TYPE_ACK 1 /* I have this packet */ static const struct tok rx_types[] = { { RX_PACKET_TYPE_DATA, "data" }, { RX_PACKET_TYPE_ACK, "ack" }, { RX_PACKET_TYPE_BUSY, "busy" }, { RX_PACKET_TYPE_ABORT, "abort" }, { RX_PACKET_TYPE_ACKALL, "ackall" }, { RX_PACKET_TYPE_CHALLENGE, "challenge" }, { RX_PACKET_TYPE_RESPONSE, "response" }, { RX_PACKET_TYPE_DEBUG, "debug" }, { RX_PACKET_TYPE_PARAMS, "params" }, { RX_PACKET_TYPE_VERSION, "version" }, { 0, NULL }, }; static const struct double_tok { int flag; /* Rx flag */ int packetType; /* Packet type */ const char *s; /* Flag string */ } rx_flags[] = { { RX_CLIENT_INITIATED, 0, "client-init" }, { RX_REQUEST_ACK, 0, "req-ack" }, { RX_LAST_PACKET, 0, "last-pckt" }, { RX_MORE_PACKETS, 0, "more-pckts" }, { RX_FREE_PACKET, 0, "free-pckt" }, { RX_SLOW_START_OK, RX_PACKET_TYPE_ACK, "slow-start" }, { RX_JUMBO_PACKET, RX_PACKET_TYPE_DATA, "jumbogram" } }; static const struct tok fs_req[] = { { 130, "fetch-data" }, { 131, "fetch-acl" }, { 132, "fetch-status" }, { 133, "store-data" }, { 134, "store-acl" }, { 135, "store-status" }, { 136, "remove-file" }, { 137, "create-file" }, { 138, "rename" }, { 139, "symlink" }, { 140, "link" }, { 141, "makedir" }, { 142, "rmdir" }, { 143, "oldsetlock" }, { 144, "oldextlock" }, { 145, "oldrellock" }, { 146, "get-stats" }, { 147, "give-cbs" }, { 148, "get-vlinfo" }, { 149, "get-vlstats" }, { 150, "set-vlstats" }, { 151, "get-rootvl" }, { 152, "check-token" }, { 153, "get-time" }, { 154, "nget-vlinfo" }, { 155, "bulk-stat" }, { 156, "setlock" }, { 157, "extlock" }, { 158, "rellock" }, { 159, "xstat-ver" }, { 160, "get-xstat" }, { 161, "dfs-lookup" }, { 162, "dfs-flushcps" }, { 163, "dfs-symlink" }, { 220, "residency" }, { 65536, "inline-bulk-status" }, { 65537, "fetch-data-64" }, { 65538, "store-data-64" }, { 65539, "give-up-all-cbs" }, { 65540, "get-caps" }, { 65541, "cb-rx-conn-addr" }, { 0, NULL }, }; static const struct tok cb_req[] = { { 204, "callback" }, { 205, "initcb" }, { 206, "probe" }, { 207, "getlock" }, { 208, "getce" }, { 209, "xstatver" }, { 210, "getxstat" }, { 211, "initcb2" }, { 212, "whoareyou" }, { 213, "initcb3" }, { 214, "probeuuid" }, { 215, "getsrvprefs" }, { 216, "getcellservdb" }, { 217, "getlocalcell" }, { 218, "getcacheconf" }, { 65536, "getce64" }, { 65537, "getcellbynum" }, { 65538, "tellmeaboutyourself" }, { 0, NULL }, }; static const struct tok pt_req[] = { { 500, "new-user" }, { 501, "where-is-it" }, { 502, "dump-entry" }, { 503, "add-to-group" }, { 504, "name-to-id" }, { 505, "id-to-name" }, { 506, "delete" }, { 507, "remove-from-group" }, { 508, "get-cps" }, { 509, "new-entry" }, { 510, "list-max" }, { 511, "set-max" }, { 512, "list-entry" }, { 513, "change-entry" }, { 514, "list-elements" }, { 515, "same-mbr-of" }, { 516, "set-fld-sentry" }, { 517, "list-owned" }, { 518, "get-cps2" }, { 519, "get-host-cps" }, { 520, "update-entry" }, { 521, "list-entries" }, { 530, "list-super-groups" }, { 0, NULL }, }; static const struct tok vldb_req[] = { { 501, "create-entry" }, { 502, "delete-entry" }, { 503, "get-entry-by-id" }, { 504, "get-entry-by-name" }, { 505, "get-new-volume-id" }, { 506, "replace-entry" }, { 507, "update-entry" }, { 508, "setlock" }, { 509, "releaselock" }, { 510, "list-entry" }, { 511, "list-attrib" }, { 512, "linked-list" }, { 513, "get-stats" }, { 514, "probe" }, { 515, "get-addrs" }, { 516, "change-addr" }, { 517, "create-entry-n" }, { 518, "get-entry-by-id-n" }, { 519, "get-entry-by-name-n" }, { 520, "replace-entry-n" }, { 521, "list-entry-n" }, { 522, "list-attrib-n" }, { 523, "linked-list-n" }, { 524, "update-entry-by-name" }, { 525, "create-entry-u" }, { 526, "get-entry-by-id-u" }, { 527, "get-entry-by-name-u" }, { 528, "replace-entry-u" }, { 529, "list-entry-u" }, { 530, "list-attrib-u" }, { 531, "linked-list-u" }, { 532, "regaddr" }, { 533, "get-addrs-u" }, { 534, "list-attrib-n2" }, { 0, NULL }, }; static const struct tok kauth_req[] = { { 1, "auth-old" }, { 21, "authenticate" }, { 22, "authenticate-v2" }, { 2, "change-pw" }, { 3, "get-ticket-old" }, { 23, "get-ticket" }, { 4, "set-pw" }, { 5, "set-fields" }, { 6, "create-user" }, { 7, "delete-user" }, { 8, "get-entry" }, { 9, "list-entry" }, { 10, "get-stats" }, { 11, "debug" }, { 12, "get-pw" }, { 13, "get-random-key" }, { 14, "unlock" }, { 15, "lock-status" }, { 0, NULL }, }; static const struct tok vol_req[] = { { 100, "create-volume" }, { 101, "delete-volume" }, { 102, "restore" }, { 103, "forward" }, { 104, "end-trans" }, { 105, "clone" }, { 106, "set-flags" }, { 107, "get-flags" }, { 108, "trans-create" }, { 109, "dump" }, { 110, "get-nth-volume" }, { 111, "set-forwarding" }, { 112, "get-name" }, { 113, "get-status" }, { 114, "sig-restore" }, { 115, "list-partitions" }, { 116, "list-volumes" }, { 117, "set-id-types" }, { 118, "monitor" }, { 119, "partition-info" }, { 120, "reclone" }, { 121, "list-one-volume" }, { 122, "nuke" }, { 123, "set-date" }, { 124, "x-list-volumes" }, { 125, "x-list-one-volume" }, { 126, "set-info" }, { 127, "x-list-partitions" }, { 128, "forward-multiple" }, { 65536, "convert-ro" }, { 65537, "get-size" }, { 65538, "dump-v2" }, { 0, NULL }, }; static const struct tok bos_req[] = { { 80, "create-bnode" }, { 81, "delete-bnode" }, { 82, "set-status" }, { 83, "get-status" }, { 84, "enumerate-instance" }, { 85, "get-instance-info" }, { 86, "get-instance-parm" }, { 87, "add-superuser" }, { 88, "delete-superuser" }, { 89, "list-superusers" }, { 90, "list-keys" }, { 91, "add-key" }, { 92, "delete-key" }, { 93, "set-cell-name" }, { 94, "get-cell-name" }, { 95, "get-cell-host" }, { 96, "add-cell-host" }, { 97, "delete-cell-host" }, { 98, "set-t-status" }, { 99, "shutdown-all" }, { 100, "restart-all" }, { 101, "startup-all" }, { 102, "set-noauth-flag" }, { 103, "re-bozo" }, { 104, "restart" }, { 105, "start-bozo-install" }, { 106, "uninstall" }, { 107, "get-dates" }, { 108, "exec" }, { 109, "prune" }, { 110, "set-restart-time" }, { 111, "get-restart-time" }, { 112, "start-bozo-log" }, { 113, "wait-all" }, { 114, "get-instance-strings" }, { 115, "get-restricted" }, { 116, "set-restricted" }, { 0, NULL }, }; static const struct tok ubik_req[] = { { 10000, "vote-beacon" }, { 10001, "vote-debug-old" }, { 10002, "vote-sdebug-old" }, { 10003, "vote-getsyncsite" }, { 10004, "vote-debug" }, { 10005, "vote-sdebug" }, { 10006, "vote-xdebug" }, { 10007, "vote-xsdebug" }, { 20000, "disk-begin" }, { 20001, "disk-commit" }, { 20002, "disk-lock" }, { 20003, "disk-write" }, { 20004, "disk-getversion" }, { 20005, "disk-getfile" }, { 20006, "disk-sendfile" }, { 20007, "disk-abort" }, { 20008, "disk-releaselocks" }, { 20009, "disk-truncate" }, { 20010, "disk-probe" }, { 20011, "disk-writev" }, { 20012, "disk-interfaceaddr" }, { 20013, "disk-setversion" }, { 0, NULL }, }; #define VOTE_LOW 10000 #define VOTE_HIGH 10007 #define DISK_LOW 20000 #define DISK_HIGH 20013 static const struct tok cb_types[] = { { 1, "exclusive" }, { 2, "shared" }, { 3, "dropped" }, { 0, NULL }, }; static const struct tok ubik_lock_types[] = { { 1, "read" }, { 2, "write" }, { 3, "wait" }, { 0, NULL }, }; static const char *voltype[] = { "read-write", "read-only", "backup" }; static const struct tok afs_fs_errors[] = { { 101, "salvage volume" }, { 102, "no such vnode" }, { 103, "no such volume" }, { 104, "volume exist" }, { 105, "no service" }, { 106, "volume offline" }, { 107, "voline online" }, { 108, "diskfull" }, { 109, "diskquota exceeded" }, { 110, "volume busy" }, { 111, "volume moved" }, { 112, "AFS IO error" }, { 0xffffff9c, "restarting fileserver" }, /* -100, sic! */ { 0, NULL } }; /* * Reasons for acknowledging a packet */ static const struct tok rx_ack_reasons[] = { { 1, "ack requested" }, { 2, "duplicate packet" }, { 3, "out of sequence" }, { 4, "exceeds window" }, { 5, "no buffer space" }, { 6, "ping" }, { 7, "ping response" }, { 8, "delay" }, { 9, "idle" }, { 0, NULL }, }; /* * Cache entries we keep around so we can figure out the RX opcode * numbers for replies. This allows us to make sense of RX reply packets. */ struct rx_cache_entry { uint32_t callnum; /* Call number (net order) */ struct in_addr client; /* client IP address (net order) */ struct in_addr server; /* server IP address (net order) */ int dport; /* server port (host order) */ u_short serviceId; /* Service identifier (net order) */ uint32_t opcode; /* RX opcode (host order) */ }; #define RX_CACHE_SIZE 64 static struct rx_cache_entry rx_cache[RX_CACHE_SIZE]; static int rx_cache_next = 0; static int rx_cache_hint = 0; static void rx_cache_insert(netdissect_options *, const u_char *, const struct ip *, int); static int rx_cache_find(const struct rx_header *, const struct ip *, int, int32_t *); static void fs_print(netdissect_options *, const u_char *, int); static void fs_reply_print(netdissect_options *, const u_char *, int, int32_t); static void acl_print(netdissect_options *, u_char *, int, u_char *); static void cb_print(netdissect_options *, const u_char *, int); static void cb_reply_print(netdissect_options *, const u_char *, int, int32_t); static void prot_print(netdissect_options *, const u_char *, int); static void prot_reply_print(netdissect_options *, const u_char *, int, int32_t); static void vldb_print(netdissect_options *, const u_char *, int); static void vldb_reply_print(netdissect_options *, const u_char *, int, int32_t); static void kauth_print(netdissect_options *, const u_char *, int); static void kauth_reply_print(netdissect_options *, const u_char *, int, int32_t); static void vol_print(netdissect_options *, const u_char *, int); static void vol_reply_print(netdissect_options *, const u_char *, int, int32_t); static void bos_print(netdissect_options *, const u_char *, int); static void bos_reply_print(netdissect_options *, const u_char *, int, int32_t); static void ubik_print(netdissect_options *, const u_char *); static void ubik_reply_print(netdissect_options *, const u_char *, int, int32_t); static void rx_ack_print(netdissect_options *, const u_char *, int); static int is_ubik(uint32_t); /* * Handle the rx-level packet. See if we know what port it's going to so * we can peek at the afs call inside */ void rx_print(netdissect_options *ndo, register const u_char *bp, int length, int sport, int dport, const u_char *bp2) { register const struct rx_header *rxh; int i; int32_t opcode; if (ndo->ndo_snapend - bp < (int)sizeof (struct rx_header)) { ND_PRINT((ndo, " [|rx] (%d)", length)); return; } rxh = (const struct rx_header *) bp; ND_PRINT((ndo, " rx %s", tok2str(rx_types, "type %d", rxh->type))); if (ndo->ndo_vflag) { int firstflag = 0; if (ndo->ndo_vflag > 1) ND_PRINT((ndo, " cid %08x call# %d", (int) EXTRACT_32BITS(&rxh->cid), (int) EXTRACT_32BITS(&rxh->callNumber))); ND_PRINT((ndo, " seq %d ser %d", (int) EXTRACT_32BITS(&rxh->seq), (int) EXTRACT_32BITS(&rxh->serial))); if (ndo->ndo_vflag > 2) ND_PRINT((ndo, " secindex %d serviceid %hu", (int) rxh->securityIndex, EXTRACT_16BITS(&rxh->serviceId))); if (ndo->ndo_vflag > 1) for (i = 0; i < NUM_RX_FLAGS; i++) { if (rxh->flags & rx_flags[i].flag && (!rx_flags[i].packetType || rxh->type == rx_flags[i].packetType)) { if (!firstflag) { firstflag = 1; ND_PRINT((ndo, " ")); } else { ND_PRINT((ndo, ",")); } ND_PRINT((ndo, "<%s>", rx_flags[i].s)); } } } /* * Try to handle AFS calls that we know about. Check the destination * port and make sure it's a data packet. Also, make sure the * seq number is 1 (because otherwise it's a continuation packet, * and we can't interpret that). Also, seems that reply packets * do not have the client-init flag set, so we check for that * as well. */ if (rxh->type == RX_PACKET_TYPE_DATA && EXTRACT_32BITS(&rxh->seq) == 1 && rxh->flags & RX_CLIENT_INITIATED) { /* * Insert this call into the call cache table, so we * have a chance to print out replies */ rx_cache_insert(ndo, bp, (const struct ip *) bp2, dport); switch (dport) { case FS_RX_PORT: /* AFS file service */ fs_print(ndo, bp, length); break; case CB_RX_PORT: /* AFS callback service */ cb_print(ndo, bp, length); break; case PROT_RX_PORT: /* AFS protection service */ prot_print(ndo, bp, length); break; case VLDB_RX_PORT: /* AFS VLDB service */ vldb_print(ndo, bp, length); break; case KAUTH_RX_PORT: /* AFS Kerberos auth service */ kauth_print(ndo, bp, length); break; case VOL_RX_PORT: /* AFS Volume service */ vol_print(ndo, bp, length); break; case BOS_RX_PORT: /* AFS BOS service */ bos_print(ndo, bp, length); break; default: ; } /* * If it's a reply (client-init is _not_ set, but seq is one) * then look it up in the cache. If we find it, call the reply * printing functions Note that we handle abort packets here, * because printing out the return code can be useful at times. */ } else if (((rxh->type == RX_PACKET_TYPE_DATA && EXTRACT_32BITS(&rxh->seq) == 1) || rxh->type == RX_PACKET_TYPE_ABORT) && (rxh->flags & RX_CLIENT_INITIATED) == 0 && rx_cache_find(rxh, (const struct ip *) bp2, sport, &opcode)) { switch (sport) { case FS_RX_PORT: /* AFS file service */ fs_reply_print(ndo, bp, length, opcode); break; case CB_RX_PORT: /* AFS callback service */ cb_reply_print(ndo, bp, length, opcode); break; case PROT_RX_PORT: /* AFS PT service */ prot_reply_print(ndo, bp, length, opcode); break; case VLDB_RX_PORT: /* AFS VLDB service */ vldb_reply_print(ndo, bp, length, opcode); break; case KAUTH_RX_PORT: /* AFS Kerberos auth service */ kauth_reply_print(ndo, bp, length, opcode); break; case VOL_RX_PORT: /* AFS Volume service */ vol_reply_print(ndo, bp, length, opcode); break; case BOS_RX_PORT: /* AFS BOS service */ bos_reply_print(ndo, bp, length, opcode); break; default: ; } /* * If it's an RX ack packet, then use the appropriate ack decoding * function (there isn't any service-specific information in the * ack packet, so we can use one for all AFS services) */ } else if (rxh->type == RX_PACKET_TYPE_ACK) rx_ack_print(ndo, bp, length); ND_PRINT((ndo, " (%d)", length)); } /* * Insert an entry into the cache. Taken from print-nfs.c */ static void rx_cache_insert(netdissect_options *ndo, const u_char *bp, const struct ip *ip, int dport) { struct rx_cache_entry *rxent; const struct rx_header *rxh = (const struct rx_header *) bp; if (ndo->ndo_snapend - bp + 1 <= (int)(sizeof(struct rx_header) + sizeof(int32_t))) return; rxent = &rx_cache[rx_cache_next]; if (++rx_cache_next >= RX_CACHE_SIZE) rx_cache_next = 0; rxent->callnum = rxh->callNumber; UNALIGNED_MEMCPY(&rxent->client, &ip->ip_src, sizeof(uint32_t)); UNALIGNED_MEMCPY(&rxent->server, &ip->ip_dst, sizeof(uint32_t)); rxent->dport = dport; rxent->serviceId = rxh->serviceId; rxent->opcode = EXTRACT_32BITS(bp + sizeof(struct rx_header)); } /* * Lookup an entry in the cache. Also taken from print-nfs.c * * Note that because this is a reply, we're looking at the _source_ * port. */ static int rx_cache_find(const struct rx_header *rxh, const struct ip *ip, int sport, int32_t *opcode) { int i; struct rx_cache_entry *rxent; uint32_t clip; uint32_t sip; UNALIGNED_MEMCPY(&clip, &ip->ip_dst, sizeof(uint32_t)); UNALIGNED_MEMCPY(&sip, &ip->ip_src, sizeof(uint32_t)); /* Start the search where we last left off */ i = rx_cache_hint; do { rxent = &rx_cache[i]; if (rxent->callnum == rxh->callNumber && rxent->client.s_addr == clip && rxent->server.s_addr == sip && rxent->serviceId == rxh->serviceId && rxent->dport == sport) { /* We got a match! */ rx_cache_hint = i; *opcode = rxent->opcode; return(1); } if (++i >= RX_CACHE_SIZE) i = 0; } while (i != rx_cache_hint); /* Our search failed */ return(0); } /* * These extrememly grody macros handle the printing of various AFS stuff. */ #define FIDOUT() { unsigned long n1, n2, n3; \ ND_TCHECK2(bp[0], sizeof(int32_t) * 3); \ n1 = EXTRACT_32BITS(bp); \ bp += sizeof(int32_t); \ n2 = EXTRACT_32BITS(bp); \ bp += sizeof(int32_t); \ n3 = EXTRACT_32BITS(bp); \ bp += sizeof(int32_t); \ ND_PRINT((ndo, " fid %d/%d/%d", (int) n1, (int) n2, (int) n3)); \ } #define STROUT(MAX) { unsigned int _i; \ ND_TCHECK2(bp[0], sizeof(int32_t)); \ _i = EXTRACT_32BITS(bp); \ if (_i > (MAX)) \ goto trunc; \ bp += sizeof(int32_t); \ ND_PRINT((ndo, " \"")); \ if (fn_printn(ndo, bp, _i, ndo->ndo_snapend)) \ goto trunc; \ ND_PRINT((ndo, "\"")); \ bp += ((_i + sizeof(int32_t) - 1) / sizeof(int32_t)) * sizeof(int32_t); \ } #define INTOUT() { int _i; \ ND_TCHECK2(bp[0], sizeof(int32_t)); \ _i = (int) EXTRACT_32BITS(bp); \ bp += sizeof(int32_t); \ ND_PRINT((ndo, " %d", _i)); \ } #define UINTOUT() { unsigned long _i; \ ND_TCHECK2(bp[0], sizeof(int32_t)); \ _i = EXTRACT_32BITS(bp); \ bp += sizeof(int32_t); \ ND_PRINT((ndo, " %lu", _i)); \ } #define UINT64OUT() { uint64_t _i; \ ND_TCHECK2(bp[0], sizeof(uint64_t)); \ _i = EXTRACT_64BITS(bp); \ bp += sizeof(uint64_t); \ ND_PRINT((ndo, " %" PRIu64, _i)); \ } #define DATEOUT() { time_t _t; struct tm *tm; char str[256]; \ ND_TCHECK2(bp[0], sizeof(int32_t)); \ _t = (time_t) EXTRACT_32BITS(bp); \ bp += sizeof(int32_t); \ tm = localtime(&_t); \ strftime(str, 256, "%Y/%m/%d %H:%M:%S", tm); \ ND_PRINT((ndo, " %s", str)); \ } #define STOREATTROUT() { unsigned long mask, _i; \ ND_TCHECK2(bp[0], (sizeof(int32_t)*6)); \ mask = EXTRACT_32BITS(bp); bp += sizeof(int32_t); \ if (mask) ND_PRINT((ndo, " StoreStatus")); \ if (mask & 1) { ND_PRINT((ndo, " date")); DATEOUT(); } \ else bp += sizeof(int32_t); \ _i = EXTRACT_32BITS(bp); bp += sizeof(int32_t); \ if (mask & 2) ND_PRINT((ndo, " owner %lu", _i)); \ _i = EXTRACT_32BITS(bp); bp += sizeof(int32_t); \ if (mask & 4) ND_PRINT((ndo, " group %lu", _i)); \ _i = EXTRACT_32BITS(bp); bp += sizeof(int32_t); \ if (mask & 8) ND_PRINT((ndo, " mode %lo", _i & 07777)); \ _i = EXTRACT_32BITS(bp); bp += sizeof(int32_t); \ if (mask & 16) ND_PRINT((ndo, " segsize %lu", _i)); \ /* undocumented in 3.3 docu */ \ if (mask & 1024) ND_PRINT((ndo, " fsync")); \ } #define UBIK_VERSIONOUT() {int32_t epoch; int32_t counter; \ ND_TCHECK2(bp[0], sizeof(int32_t) * 2); \ epoch = EXTRACT_32BITS(bp); \ bp += sizeof(int32_t); \ counter = EXTRACT_32BITS(bp); \ bp += sizeof(int32_t); \ ND_PRINT((ndo, " %d.%d", epoch, counter)); \ } #define AFSUUIDOUT() {uint32_t temp; int _i; \ ND_TCHECK2(bp[0], 11*sizeof(uint32_t)); \ temp = EXTRACT_32BITS(bp); \ bp += sizeof(uint32_t); \ ND_PRINT((ndo, " %08x", temp)); \ temp = EXTRACT_32BITS(bp); \ bp += sizeof(uint32_t); \ ND_PRINT((ndo, "%04x", temp)); \ temp = EXTRACT_32BITS(bp); \ bp += sizeof(uint32_t); \ ND_PRINT((ndo, "%04x", temp)); \ for (_i = 0; _i < 8; _i++) { \ temp = EXTRACT_32BITS(bp); \ bp += sizeof(uint32_t); \ ND_PRINT((ndo, "%02x", (unsigned char) temp)); \ } \ } /* * This is the sickest one of all */ #define VECOUT(MAX) { u_char *sp; \ u_char s[AFSNAMEMAX]; \ int k; \ if ((MAX) + 1 > sizeof(s)) \ goto trunc; \ ND_TCHECK2(bp[0], (MAX) * sizeof(int32_t)); \ sp = s; \ for (k = 0; k < (MAX); k++) { \ *sp++ = (u_char) EXTRACT_32BITS(bp); \ bp += sizeof(int32_t); \ } \ s[(MAX)] = '\0'; \ ND_PRINT((ndo, " \"")); \ fn_print(ndo, s, NULL); \ ND_PRINT((ndo, "\"")); \ } #define DESTSERVEROUT() { unsigned long n1, n2, n3; \ ND_TCHECK2(bp[0], sizeof(int32_t) * 3); \ n1 = EXTRACT_32BITS(bp); \ bp += sizeof(int32_t); \ n2 = EXTRACT_32BITS(bp); \ bp += sizeof(int32_t); \ n3 = EXTRACT_32BITS(bp); \ bp += sizeof(int32_t); \ ND_PRINT((ndo, " server %d:%d:%d", (int) n1, (int) n2, (int) n3)); \ } /* * Handle calls to the AFS file service (fs) */ static void fs_print(netdissect_options *ndo, register const u_char *bp, int length) { int fs_op; unsigned long i; if (length <= (int)sizeof(struct rx_header)) return; if (ndo->ndo_snapend - bp + 1 <= (int)(sizeof(struct rx_header) + sizeof(int32_t))) { goto trunc; } /* * Print out the afs call we're invoking. The table used here was * gleaned from fsint/afsint.xg */ fs_op = EXTRACT_32BITS(bp + sizeof(struct rx_header)); ND_PRINT((ndo, " fs call %s", tok2str(fs_req, "op#%d", fs_op))); /* * Print out arguments to some of the AFS calls. This stuff is * all from afsint.xg */ bp += sizeof(struct rx_header) + 4; /* * Sigh. This is gross. Ritchie forgive me. */ switch (fs_op) { case 130: /* Fetch data */ FIDOUT(); ND_PRINT((ndo, " offset")); UINTOUT(); ND_PRINT((ndo, " length")); UINTOUT(); break; case 131: /* Fetch ACL */ case 132: /* Fetch Status */ case 143: /* Old set lock */ case 144: /* Old extend lock */ case 145: /* Old release lock */ case 156: /* Set lock */ case 157: /* Extend lock */ case 158: /* Release lock */ FIDOUT(); break; case 135: /* Store status */ FIDOUT(); STOREATTROUT(); break; case 133: /* Store data */ FIDOUT(); STOREATTROUT(); ND_PRINT((ndo, " offset")); UINTOUT(); ND_PRINT((ndo, " length")); UINTOUT(); ND_PRINT((ndo, " flen")); UINTOUT(); break; case 134: /* Store ACL */ { char a[AFSOPAQUEMAX+1]; FIDOUT(); ND_TCHECK2(bp[0], 4); i = EXTRACT_32BITS(bp); bp += sizeof(int32_t); ND_TCHECK2(bp[0], i); i = min(AFSOPAQUEMAX, i); strncpy(a, (const char *) bp, i); a[i] = '\0'; acl_print(ndo, (u_char *) a, sizeof(a), (u_char *) a + i); break; } case 137: /* Create file */ case 141: /* MakeDir */ FIDOUT(); STROUT(AFSNAMEMAX); STOREATTROUT(); break; case 136: /* Remove file */ case 142: /* Remove directory */ FIDOUT(); STROUT(AFSNAMEMAX); break; case 138: /* Rename file */ ND_PRINT((ndo, " old")); FIDOUT(); STROUT(AFSNAMEMAX); ND_PRINT((ndo, " new")); FIDOUT(); STROUT(AFSNAMEMAX); break; case 139: /* Symlink */ FIDOUT(); STROUT(AFSNAMEMAX); ND_PRINT((ndo, " link to")); STROUT(AFSNAMEMAX); break; case 140: /* Link */ FIDOUT(); STROUT(AFSNAMEMAX); ND_PRINT((ndo, " link to")); FIDOUT(); break; case 148: /* Get volume info */ STROUT(AFSNAMEMAX); break; case 149: /* Get volume stats */ case 150: /* Set volume stats */ ND_PRINT((ndo, " volid")); UINTOUT(); break; case 154: /* New get volume info */ ND_PRINT((ndo, " volname")); STROUT(AFSNAMEMAX); break; case 155: /* Bulk stat */ case 65536: /* Inline bulk stat */ { unsigned long j; ND_TCHECK2(bp[0], 4); j = EXTRACT_32BITS(bp); bp += sizeof(int32_t); for (i = 0; i < j; i++) { FIDOUT(); if (i != j - 1) ND_PRINT((ndo, ",")); } if (j == 0) ND_PRINT((ndo, " ")); } case 65537: /* Fetch data 64 */ FIDOUT(); ND_PRINT((ndo, " offset")); UINT64OUT(); ND_PRINT((ndo, " length")); UINT64OUT(); break; case 65538: /* Store data 64 */ FIDOUT(); STOREATTROUT(); ND_PRINT((ndo, " offset")); UINT64OUT(); ND_PRINT((ndo, " length")); UINT64OUT(); ND_PRINT((ndo, " flen")); UINT64OUT(); break; case 65541: /* CallBack rx conn address */ ND_PRINT((ndo, " addr")); UINTOUT(); default: ; } return; trunc: ND_PRINT((ndo, " [|fs]")); } /* * Handle replies to the AFS file service */ static void fs_reply_print(netdissect_options *ndo, register const u_char *bp, int length, int32_t opcode) { unsigned long i; const struct rx_header *rxh; if (length <= (int)sizeof(struct rx_header)) return; rxh = (const struct rx_header *) bp; /* * Print out the afs call we're invoking. The table used here was * gleaned from fsint/afsint.xg */ ND_PRINT((ndo, " fs reply %s", tok2str(fs_req, "op#%d", opcode))); bp += sizeof(struct rx_header); /* * If it was a data packet, interpret the response */ if (rxh->type == RX_PACKET_TYPE_DATA) { switch (opcode) { case 131: /* Fetch ACL */ { char a[AFSOPAQUEMAX+1]; ND_TCHECK2(bp[0], 4); i = EXTRACT_32BITS(bp); bp += sizeof(int32_t); ND_TCHECK2(bp[0], i); i = min(AFSOPAQUEMAX, i); strncpy(a, (const char *) bp, i); a[i] = '\0'; acl_print(ndo, (u_char *) a, sizeof(a), (u_char *) a + i); break; } case 137: /* Create file */ case 141: /* MakeDir */ ND_PRINT((ndo, " new")); FIDOUT(); break; case 151: /* Get root volume */ ND_PRINT((ndo, " root volume")); STROUT(AFSNAMEMAX); break; case 153: /* Get time */ DATEOUT(); break; default: ; } } else if (rxh->type == RX_PACKET_TYPE_ABORT) { /* * Otherwise, just print out the return code */ ND_TCHECK2(bp[0], sizeof(int32_t)); i = (int) EXTRACT_32BITS(bp); bp += sizeof(int32_t); ND_PRINT((ndo, " error %s", tok2str(afs_fs_errors, "#%d", i))); } else { ND_PRINT((ndo, " strange fs reply of type %d", rxh->type)); } return; trunc: ND_PRINT((ndo, " [|fs]")); } /* * Print out an AFS ACL string. An AFS ACL is a string that has the * following format: * * * * .... * * "positive" and "negative" are integers which contain the number of * positive and negative ACL's in the string. The uid/aclbits pair are * ASCII strings containing the UID/PTS record and an ASCII number * representing a logical OR of all the ACL permission bits */ static void acl_print(netdissect_options *ndo, u_char *s, int maxsize, u_char *end) { int pos, neg, acl; int n, i; char *user; char fmt[1024]; if ((user = (char *)malloc(maxsize)) == NULL) return; if (sscanf((char *) s, "%d %d\n%n", &pos, &neg, &n) != 2) goto finish; s += n; if (s > end) goto finish; /* * This wacky order preserves the order used by the "fs" command */ #define ACLOUT(acl) \ ND_PRINT((ndo, "%s%s%s%s%s%s%s", \ acl & PRSFS_READ ? "r" : "", \ acl & PRSFS_LOOKUP ? "l" : "", \ acl & PRSFS_INSERT ? "i" : "", \ acl & PRSFS_DELETE ? "d" : "", \ acl & PRSFS_WRITE ? "w" : "", \ acl & PRSFS_LOCK ? "k" : "", \ acl & PRSFS_ADMINISTER ? "a" : "")); for (i = 0; i < pos; i++) { snprintf(fmt, sizeof(fmt), "%%%ds %%d\n%%n", maxsize - 1); if (sscanf((char *) s, fmt, user, &acl, &n) != 2) goto finish; s += n; ND_PRINT((ndo, " +{")); fn_print(ndo, (u_char *)user, NULL); ND_PRINT((ndo, " ")); ACLOUT(acl); ND_PRINT((ndo, "}")); if (s > end) goto finish; } for (i = 0; i < neg; i++) { snprintf(fmt, sizeof(fmt), "%%%ds %%d\n%%n", maxsize - 1); if (sscanf((char *) s, fmt, user, &acl, &n) != 2) goto finish; s += n; ND_PRINT((ndo, " -{")); fn_print(ndo, (u_char *)user, NULL); ND_PRINT((ndo, " ")); ACLOUT(acl); ND_PRINT((ndo, "}")); if (s > end) goto finish; } finish: free(user); return; } #undef ACLOUT /* * Handle calls to the AFS callback service */ static void cb_print(netdissect_options *ndo, register const u_char *bp, int length) { int cb_op; unsigned long i; if (length <= (int)sizeof(struct rx_header)) return; if (ndo->ndo_snapend - bp + 1 <= (int)(sizeof(struct rx_header) + sizeof(int32_t))) { goto trunc; } /* * Print out the afs call we're invoking. The table used here was * gleaned from fsint/afscbint.xg */ cb_op = EXTRACT_32BITS(bp + sizeof(struct rx_header)); ND_PRINT((ndo, " cb call %s", tok2str(cb_req, "op#%d", cb_op))); bp += sizeof(struct rx_header) + 4; /* * Print out the afs call we're invoking. The table used here was * gleaned from fsint/afscbint.xg */ switch (cb_op) { case 204: /* Callback */ { unsigned long j, t; ND_TCHECK2(bp[0], 4); j = EXTRACT_32BITS(bp); bp += sizeof(int32_t); for (i = 0; i < j; i++) { FIDOUT(); if (i != j - 1) ND_PRINT((ndo, ",")); } if (j == 0) ND_PRINT((ndo, " ")); j = EXTRACT_32BITS(bp); bp += sizeof(int32_t); if (j != 0) ND_PRINT((ndo, ";")); for (i = 0; i < j; i++) { ND_PRINT((ndo, " ver")); INTOUT(); ND_PRINT((ndo, " expires")); DATEOUT(); ND_TCHECK2(bp[0], 4); t = EXTRACT_32BITS(bp); bp += sizeof(int32_t); tok2str(cb_types, "type %d", t); } } case 214: { ND_PRINT((ndo, " afsuuid")); AFSUUIDOUT(); break; } default: ; } return; trunc: ND_PRINT((ndo, " [|cb]")); } /* * Handle replies to the AFS Callback Service */ static void cb_reply_print(netdissect_options *ndo, register const u_char *bp, int length, int32_t opcode) { const struct rx_header *rxh; if (length <= (int)sizeof(struct rx_header)) return; rxh = (const struct rx_header *) bp; /* * Print out the afs call we're invoking. The table used here was * gleaned from fsint/afscbint.xg */ ND_PRINT((ndo, " cb reply %s", tok2str(cb_req, "op#%d", opcode))); bp += sizeof(struct rx_header); /* * If it was a data packet, interpret the response. */ if (rxh->type == RX_PACKET_TYPE_DATA) switch (opcode) { case 213: /* InitCallBackState3 */ AFSUUIDOUT(); break; default: ; } else { /* * Otherwise, just print out the return code */ ND_PRINT((ndo, " errcode")); INTOUT(); } return; trunc: ND_PRINT((ndo, " [|cb]")); } /* * Handle calls to the AFS protection database server */ static void prot_print(netdissect_options *ndo, register const u_char *bp, int length) { unsigned long i; int pt_op; if (length <= (int)sizeof(struct rx_header)) return; if (ndo->ndo_snapend - bp + 1 <= (int)(sizeof(struct rx_header) + sizeof(int32_t))) { goto trunc; } /* * Print out the afs call we're invoking. The table used here was * gleaned from ptserver/ptint.xg */ pt_op = EXTRACT_32BITS(bp + sizeof(struct rx_header)); ND_PRINT((ndo, " pt")); if (is_ubik(pt_op)) { ubik_print(ndo, bp); return; } ND_PRINT((ndo, " call %s", tok2str(pt_req, "op#%d", pt_op))); /* * Decode some of the arguments to the PT calls */ bp += sizeof(struct rx_header) + 4; switch (pt_op) { case 500: /* I New User */ STROUT(PRNAMEMAX); ND_PRINT((ndo, " id")); INTOUT(); ND_PRINT((ndo, " oldid")); INTOUT(); break; case 501: /* Where is it */ case 506: /* Delete */ case 508: /* Get CPS */ case 512: /* List entry */ case 514: /* List elements */ case 517: /* List owned */ case 518: /* Get CPS2 */ case 519: /* Get host CPS */ case 530: /* List super groups */ ND_PRINT((ndo, " id")); INTOUT(); break; case 502: /* Dump entry */ ND_PRINT((ndo, " pos")); INTOUT(); break; case 503: /* Add to group */ case 507: /* Remove from group */ case 515: /* Is a member of? */ ND_PRINT((ndo, " uid")); INTOUT(); ND_PRINT((ndo, " gid")); INTOUT(); break; case 504: /* Name to ID */ { unsigned long j; ND_TCHECK2(bp[0], 4); j = EXTRACT_32BITS(bp); bp += sizeof(int32_t); /* * Who designed this chicken-shit protocol? * * Each character is stored as a 32-bit * integer! */ for (i = 0; i < j; i++) { VECOUT(PRNAMEMAX); } if (j == 0) ND_PRINT((ndo, " ")); } break; case 505: /* Id to name */ { unsigned long j; ND_PRINT((ndo, " ids:")); ND_TCHECK2(bp[0], 4); i = EXTRACT_32BITS(bp); bp += sizeof(int32_t); for (j = 0; j < i; j++) INTOUT(); if (j == 0) ND_PRINT((ndo, " ")); } break; case 509: /* New entry */ STROUT(PRNAMEMAX); ND_PRINT((ndo, " flag")); INTOUT(); ND_PRINT((ndo, " oid")); INTOUT(); break; case 511: /* Set max */ ND_PRINT((ndo, " id")); INTOUT(); ND_PRINT((ndo, " gflag")); INTOUT(); break; case 513: /* Change entry */ ND_PRINT((ndo, " id")); INTOUT(); STROUT(PRNAMEMAX); ND_PRINT((ndo, " oldid")); INTOUT(); ND_PRINT((ndo, " newid")); INTOUT(); break; case 520: /* Update entry */ ND_PRINT((ndo, " id")); INTOUT(); STROUT(PRNAMEMAX); break; default: ; } return; trunc: ND_PRINT((ndo, " [|pt]")); } /* * Handle replies to the AFS protection service */ static void prot_reply_print(netdissect_options *ndo, register const u_char *bp, int length, int32_t opcode) { const struct rx_header *rxh; unsigned long i; if (length < (int)sizeof(struct rx_header)) return; rxh = (const struct rx_header *) bp; /* * Print out the afs call we're invoking. The table used here was * gleaned from ptserver/ptint.xg. Check to see if it's a * Ubik call, however. */ ND_PRINT((ndo, " pt")); if (is_ubik(opcode)) { ubik_reply_print(ndo, bp, length, opcode); return; } ND_PRINT((ndo, " reply %s", tok2str(pt_req, "op#%d", opcode))); bp += sizeof(struct rx_header); /* * If it was a data packet, interpret the response */ if (rxh->type == RX_PACKET_TYPE_DATA) switch (opcode) { case 504: /* Name to ID */ { unsigned long j; ND_PRINT((ndo, " ids:")); ND_TCHECK2(bp[0], 4); i = EXTRACT_32BITS(bp); bp += sizeof(int32_t); for (j = 0; j < i; j++) INTOUT(); if (j == 0) ND_PRINT((ndo, " ")); } break; case 505: /* ID to name */ { unsigned long j; ND_TCHECK2(bp[0], 4); j = EXTRACT_32BITS(bp); bp += sizeof(int32_t); /* * Who designed this chicken-shit protocol? * * Each character is stored as a 32-bit * integer! */ for (i = 0; i < j; i++) { VECOUT(PRNAMEMAX); } if (j == 0) ND_PRINT((ndo, " ")); } break; case 508: /* Get CPS */ case 514: /* List elements */ case 517: /* List owned */ case 518: /* Get CPS2 */ case 519: /* Get host CPS */ { unsigned long j; ND_TCHECK2(bp[0], 4); j = EXTRACT_32BITS(bp); bp += sizeof(int32_t); for (i = 0; i < j; i++) { INTOUT(); } if (j == 0) ND_PRINT((ndo, " ")); } break; case 510: /* List max */ ND_PRINT((ndo, " maxuid")); INTOUT(); ND_PRINT((ndo, " maxgid")); INTOUT(); break; default: ; } else { /* * Otherwise, just print out the return code */ ND_PRINT((ndo, " errcode")); INTOUT(); } return; trunc: ND_PRINT((ndo, " [|pt]")); } /* * Handle calls to the AFS volume location database service */ static void vldb_print(netdissect_options *ndo, register const u_char *bp, int length) { int vldb_op; unsigned long i; if (length <= (int)sizeof(struct rx_header)) return; if (ndo->ndo_snapend - bp + 1 <= (int)(sizeof(struct rx_header) + sizeof(int32_t))) { goto trunc; } /* * Print out the afs call we're invoking. The table used here was * gleaned from vlserver/vldbint.xg */ vldb_op = EXTRACT_32BITS(bp + sizeof(struct rx_header)); ND_PRINT((ndo, " vldb")); if (is_ubik(vldb_op)) { ubik_print(ndo, bp); return; } ND_PRINT((ndo, " call %s", tok2str(vldb_req, "op#%d", vldb_op))); /* * Decode some of the arguments to the VLDB calls */ bp += sizeof(struct rx_header) + 4; switch (vldb_op) { case 501: /* Create new volume */ case 517: /* Create entry N */ VECOUT(VLNAMEMAX); break; case 502: /* Delete entry */ case 503: /* Get entry by ID */ case 507: /* Update entry */ case 508: /* Set lock */ case 509: /* Release lock */ case 518: /* Get entry by ID N */ ND_PRINT((ndo, " volid")); INTOUT(); ND_TCHECK2(bp[0], sizeof(int32_t)); i = EXTRACT_32BITS(bp); bp += sizeof(int32_t); if (i <= 2) ND_PRINT((ndo, " type %s", voltype[i])); break; case 504: /* Get entry by name */ case 519: /* Get entry by name N */ case 524: /* Update entry by name */ case 527: /* Get entry by name U */ STROUT(VLNAMEMAX); break; case 505: /* Get new vol id */ ND_PRINT((ndo, " bump")); INTOUT(); break; case 506: /* Replace entry */ case 520: /* Replace entry N */ ND_PRINT((ndo, " volid")); INTOUT(); ND_TCHECK2(bp[0], sizeof(int32_t)); i = EXTRACT_32BITS(bp); bp += sizeof(int32_t); if (i <= 2) ND_PRINT((ndo, " type %s", voltype[i])); VECOUT(VLNAMEMAX); break; case 510: /* List entry */ case 521: /* List entry N */ ND_PRINT((ndo, " index")); INTOUT(); break; default: ; } return; trunc: ND_PRINT((ndo, " [|vldb]")); } /* * Handle replies to the AFS volume location database service */ static void vldb_reply_print(netdissect_options *ndo, register const u_char *bp, int length, int32_t opcode) { const struct rx_header *rxh; unsigned long i; if (length < (int)sizeof(struct rx_header)) return; rxh = (const struct rx_header *) bp; /* * Print out the afs call we're invoking. The table used here was * gleaned from vlserver/vldbint.xg. Check to see if it's a * Ubik call, however. */ ND_PRINT((ndo, " vldb")); if (is_ubik(opcode)) { ubik_reply_print(ndo, bp, length, opcode); return; } ND_PRINT((ndo, " reply %s", tok2str(vldb_req, "op#%d", opcode))); bp += sizeof(struct rx_header); /* * If it was a data packet, interpret the response */ if (rxh->type == RX_PACKET_TYPE_DATA) switch (opcode) { case 510: /* List entry */ ND_PRINT((ndo, " count")); INTOUT(); ND_PRINT((ndo, " nextindex")); INTOUT(); case 503: /* Get entry by id */ case 504: /* Get entry by name */ { unsigned long nservers, j; VECOUT(VLNAMEMAX); ND_TCHECK2(bp[0], sizeof(int32_t)); bp += sizeof(int32_t); ND_PRINT((ndo, " numservers")); ND_TCHECK2(bp[0], sizeof(int32_t)); nservers = EXTRACT_32BITS(bp); bp += sizeof(int32_t); ND_PRINT((ndo, " %lu", nservers)); ND_PRINT((ndo, " servers")); for (i = 0; i < 8; i++) { ND_TCHECK2(bp[0], sizeof(int32_t)); if (i < nservers) ND_PRINT((ndo, " %s", intoa(((const struct in_addr *) bp)->s_addr))); bp += sizeof(int32_t); } ND_PRINT((ndo, " partitions")); for (i = 0; i < 8; i++) { ND_TCHECK2(bp[0], sizeof(int32_t)); j = EXTRACT_32BITS(bp); if (i < nservers && j <= 26) ND_PRINT((ndo, " %c", 'a' + (int)j)); else if (i < nservers) ND_PRINT((ndo, " %lu", j)); bp += sizeof(int32_t); } ND_TCHECK2(bp[0], 8 * sizeof(int32_t)); bp += 8 * sizeof(int32_t); ND_PRINT((ndo, " rwvol")); UINTOUT(); ND_PRINT((ndo, " rovol")); UINTOUT(); ND_PRINT((ndo, " backup")); UINTOUT(); } break; case 505: /* Get new volume ID */ ND_PRINT((ndo, " newvol")); UINTOUT(); break; case 521: /* List entry */ case 529: /* List entry U */ ND_PRINT((ndo, " count")); INTOUT(); ND_PRINT((ndo, " nextindex")); INTOUT(); case 518: /* Get entry by ID N */ case 519: /* Get entry by name N */ { unsigned long nservers, j; VECOUT(VLNAMEMAX); ND_PRINT((ndo, " numservers")); ND_TCHECK2(bp[0], sizeof(int32_t)); nservers = EXTRACT_32BITS(bp); bp += sizeof(int32_t); ND_PRINT((ndo, " %lu", nservers)); ND_PRINT((ndo, " servers")); for (i = 0; i < 13; i++) { ND_TCHECK2(bp[0], sizeof(int32_t)); if (i < nservers) ND_PRINT((ndo, " %s", intoa(((const struct in_addr *) bp)->s_addr))); bp += sizeof(int32_t); } ND_PRINT((ndo, " partitions")); for (i = 0; i < 13; i++) { ND_TCHECK2(bp[0], sizeof(int32_t)); j = EXTRACT_32BITS(bp); if (i < nservers && j <= 26) ND_PRINT((ndo, " %c", 'a' + (int)j)); else if (i < nservers) ND_PRINT((ndo, " %lu", j)); bp += sizeof(int32_t); } ND_TCHECK2(bp[0], 13 * sizeof(int32_t)); bp += 13 * sizeof(int32_t); ND_PRINT((ndo, " rwvol")); UINTOUT(); ND_PRINT((ndo, " rovol")); UINTOUT(); ND_PRINT((ndo, " backup")); UINTOUT(); } break; case 526: /* Get entry by ID U */ case 527: /* Get entry by name U */ { unsigned long nservers, j; VECOUT(VLNAMEMAX); ND_PRINT((ndo, " numservers")); ND_TCHECK2(bp[0], sizeof(int32_t)); nservers = EXTRACT_32BITS(bp); bp += sizeof(int32_t); ND_PRINT((ndo, " %lu", nservers)); ND_PRINT((ndo, " servers")); for (i = 0; i < 13; i++) { if (i < nservers) { ND_PRINT((ndo, " afsuuid")); AFSUUIDOUT(); } else { ND_TCHECK2(bp[0], 44); bp += 44; } } ND_TCHECK2(bp[0], 4 * 13); bp += 4 * 13; ND_PRINT((ndo, " partitions")); for (i = 0; i < 13; i++) { ND_TCHECK2(bp[0], sizeof(int32_t)); j = EXTRACT_32BITS(bp); if (i < nservers && j <= 26) ND_PRINT((ndo, " %c", 'a' + (int)j)); else if (i < nservers) ND_PRINT((ndo, " %lu", j)); bp += sizeof(int32_t); } ND_TCHECK2(bp[0], 13 * sizeof(int32_t)); bp += 13 * sizeof(int32_t); ND_PRINT((ndo, " rwvol")); UINTOUT(); ND_PRINT((ndo, " rovol")); UINTOUT(); ND_PRINT((ndo, " backup")); UINTOUT(); } default: ; } else { /* * Otherwise, just print out the return code */ ND_PRINT((ndo, " errcode")); INTOUT(); } return; trunc: ND_PRINT((ndo, " [|vldb]")); } /* * Handle calls to the AFS Kerberos Authentication service */ static void kauth_print(netdissect_options *ndo, register const u_char *bp, int length) { int kauth_op; if (length <= (int)sizeof(struct rx_header)) return; if (ndo->ndo_snapend - bp + 1 <= (int)(sizeof(struct rx_header) + sizeof(int32_t))) { goto trunc; } /* * Print out the afs call we're invoking. The table used here was * gleaned from kauth/kauth.rg */ kauth_op = EXTRACT_32BITS(bp + sizeof(struct rx_header)); ND_PRINT((ndo, " kauth")); if (is_ubik(kauth_op)) { ubik_print(ndo, bp); return; } ND_PRINT((ndo, " call %s", tok2str(kauth_req, "op#%d", kauth_op))); /* * Decode some of the arguments to the KA calls */ bp += sizeof(struct rx_header) + 4; switch (kauth_op) { case 1: /* Authenticate old */ case 21: /* Authenticate */ case 22: /* Authenticate-V2 */ case 2: /* Change PW */ case 5: /* Set fields */ case 6: /* Create user */ case 7: /* Delete user */ case 8: /* Get entry */ case 14: /* Unlock */ case 15: /* Lock status */ ND_PRINT((ndo, " principal")); STROUT(KANAMEMAX); STROUT(KANAMEMAX); break; case 3: /* GetTicket-old */ case 23: /* GetTicket */ { int i; ND_PRINT((ndo, " kvno")); INTOUT(); ND_PRINT((ndo, " domain")); STROUT(KANAMEMAX); ND_TCHECK2(bp[0], sizeof(int32_t)); i = (int) EXTRACT_32BITS(bp); bp += sizeof(int32_t); ND_TCHECK2(bp[0], i); bp += i; ND_PRINT((ndo, " principal")); STROUT(KANAMEMAX); STROUT(KANAMEMAX); break; } case 4: /* Set Password */ ND_PRINT((ndo, " principal")); STROUT(KANAMEMAX); STROUT(KANAMEMAX); ND_PRINT((ndo, " kvno")); INTOUT(); break; case 12: /* Get password */ ND_PRINT((ndo, " name")); STROUT(KANAMEMAX); break; default: ; } return; trunc: ND_PRINT((ndo, " [|kauth]")); } /* * Handle replies to the AFS Kerberos Authentication Service */ static void kauth_reply_print(netdissect_options *ndo, register const u_char *bp, int length, int32_t opcode) { const struct rx_header *rxh; if (length <= (int)sizeof(struct rx_header)) return; rxh = (const struct rx_header *) bp; /* * Print out the afs call we're invoking. The table used here was * gleaned from kauth/kauth.rg */ ND_PRINT((ndo, " kauth")); if (is_ubik(opcode)) { ubik_reply_print(ndo, bp, length, opcode); return; } ND_PRINT((ndo, " reply %s", tok2str(kauth_req, "op#%d", opcode))); bp += sizeof(struct rx_header); /* * If it was a data packet, interpret the response. */ if (rxh->type == RX_PACKET_TYPE_DATA) /* Well, no, not really. Leave this for later */ ; else { /* * Otherwise, just print out the return code */ ND_PRINT((ndo, " errcode")); INTOUT(); } return; trunc: ND_PRINT((ndo, " [|kauth]")); } /* * Handle calls to the AFS Volume location service */ static void vol_print(netdissect_options *ndo, register const u_char *bp, int length) { int vol_op; if (length <= (int)sizeof(struct rx_header)) return; if (ndo->ndo_snapend - bp + 1 <= (int)(sizeof(struct rx_header) + sizeof(int32_t))) { goto trunc; } /* * Print out the afs call we're invoking. The table used here was * gleaned from volser/volint.xg */ vol_op = EXTRACT_32BITS(bp + sizeof(struct rx_header)); ND_PRINT((ndo, " vol call %s", tok2str(vol_req, "op#%d", vol_op))); bp += sizeof(struct rx_header) + 4; switch (vol_op) { case 100: /* Create volume */ ND_PRINT((ndo, " partition")); UINTOUT(); ND_PRINT((ndo, " name")); STROUT(AFSNAMEMAX); ND_PRINT((ndo, " type")); UINTOUT(); ND_PRINT((ndo, " parent")); UINTOUT(); break; case 101: /* Delete volume */ case 107: /* Get flags */ ND_PRINT((ndo, " trans")); UINTOUT(); break; case 102: /* Restore */ ND_PRINT((ndo, " totrans")); UINTOUT(); ND_PRINT((ndo, " flags")); UINTOUT(); break; case 103: /* Forward */ ND_PRINT((ndo, " fromtrans")); UINTOUT(); ND_PRINT((ndo, " fromdate")); DATEOUT(); DESTSERVEROUT(); ND_PRINT((ndo, " desttrans")); INTOUT(); break; case 104: /* End trans */ ND_PRINT((ndo, " trans")); UINTOUT(); break; case 105: /* Clone */ ND_PRINT((ndo, " trans")); UINTOUT(); ND_PRINT((ndo, " purgevol")); UINTOUT(); ND_PRINT((ndo, " newtype")); UINTOUT(); ND_PRINT((ndo, " newname")); STROUT(AFSNAMEMAX); break; case 106: /* Set flags */ ND_PRINT((ndo, " trans")); UINTOUT(); ND_PRINT((ndo, " flags")); UINTOUT(); break; case 108: /* Trans create */ ND_PRINT((ndo, " vol")); UINTOUT(); ND_PRINT((ndo, " partition")); UINTOUT(); ND_PRINT((ndo, " flags")); UINTOUT(); break; case 109: /* Dump */ case 655537: /* Get size */ ND_PRINT((ndo, " fromtrans")); UINTOUT(); ND_PRINT((ndo, " fromdate")); DATEOUT(); break; case 110: /* Get n-th volume */ ND_PRINT((ndo, " index")); UINTOUT(); break; case 111: /* Set forwarding */ ND_PRINT((ndo, " tid")); UINTOUT(); ND_PRINT((ndo, " newsite")); UINTOUT(); break; case 112: /* Get name */ case 113: /* Get status */ ND_PRINT((ndo, " tid")); break; case 114: /* Signal restore */ ND_PRINT((ndo, " name")); STROUT(AFSNAMEMAX); ND_PRINT((ndo, " type")); UINTOUT(); ND_PRINT((ndo, " pid")); UINTOUT(); ND_PRINT((ndo, " cloneid")); UINTOUT(); break; case 116: /* List volumes */ ND_PRINT((ndo, " partition")); UINTOUT(); ND_PRINT((ndo, " flags")); UINTOUT(); break; case 117: /* Set id types */ ND_PRINT((ndo, " tid")); UINTOUT(); ND_PRINT((ndo, " name")); STROUT(AFSNAMEMAX); ND_PRINT((ndo, " type")); UINTOUT(); ND_PRINT((ndo, " pid")); UINTOUT(); ND_PRINT((ndo, " clone")); UINTOUT(); ND_PRINT((ndo, " backup")); UINTOUT(); break; case 119: /* Partition info */ ND_PRINT((ndo, " name")); STROUT(AFSNAMEMAX); break; case 120: /* Reclone */ ND_PRINT((ndo, " tid")); UINTOUT(); break; case 121: /* List one volume */ case 122: /* Nuke volume */ case 124: /* Extended List volumes */ case 125: /* Extended List one volume */ case 65536: /* Convert RO to RW volume */ ND_PRINT((ndo, " partid")); UINTOUT(); ND_PRINT((ndo, " volid")); UINTOUT(); break; case 123: /* Set date */ ND_PRINT((ndo, " tid")); UINTOUT(); ND_PRINT((ndo, " date")); DATEOUT(); break; case 126: /* Set info */ ND_PRINT((ndo, " tid")); UINTOUT(); break; case 128: /* Forward multiple */ ND_PRINT((ndo, " fromtrans")); UINTOUT(); ND_PRINT((ndo, " fromdate")); DATEOUT(); { unsigned long i, j; ND_TCHECK2(bp[0], 4); j = EXTRACT_32BITS(bp); bp += sizeof(int32_t); for (i = 0; i < j; i++) { DESTSERVEROUT(); if (i != j - 1) ND_PRINT((ndo, ",")); } if (j == 0) ND_PRINT((ndo, " ")); } break; case 65538: /* Dump version 2 */ ND_PRINT((ndo, " fromtrans")); UINTOUT(); ND_PRINT((ndo, " fromdate")); DATEOUT(); ND_PRINT((ndo, " flags")); UINTOUT(); break; default: ; } return; trunc: ND_PRINT((ndo, " [|vol]")); } /* * Handle replies to the AFS Volume Service */ static void vol_reply_print(netdissect_options *ndo, register const u_char *bp, int length, int32_t opcode) { const struct rx_header *rxh; if (length <= (int)sizeof(struct rx_header)) return; rxh = (const struct rx_header *) bp; /* * Print out the afs call we're invoking. The table used here was * gleaned from volser/volint.xg */ ND_PRINT((ndo, " vol reply %s", tok2str(vol_req, "op#%d", opcode))); bp += sizeof(struct rx_header); /* * If it was a data packet, interpret the response. */ if (rxh->type == RX_PACKET_TYPE_DATA) { switch (opcode) { case 100: /* Create volume */ ND_PRINT((ndo, " volid")); UINTOUT(); ND_PRINT((ndo, " trans")); UINTOUT(); break; case 104: /* End transaction */ UINTOUT(); break; case 105: /* Clone */ ND_PRINT((ndo, " newvol")); UINTOUT(); break; case 107: /* Get flags */ UINTOUT(); break; case 108: /* Transaction create */ ND_PRINT((ndo, " trans")); UINTOUT(); break; case 110: /* Get n-th volume */ ND_PRINT((ndo, " volume")); UINTOUT(); ND_PRINT((ndo, " partition")); UINTOUT(); break; case 112: /* Get name */ STROUT(AFSNAMEMAX); break; case 113: /* Get status */ ND_PRINT((ndo, " volid")); UINTOUT(); ND_PRINT((ndo, " nextuniq")); UINTOUT(); ND_PRINT((ndo, " type")); UINTOUT(); ND_PRINT((ndo, " parentid")); UINTOUT(); ND_PRINT((ndo, " clone")); UINTOUT(); ND_PRINT((ndo, " backup")); UINTOUT(); ND_PRINT((ndo, " restore")); UINTOUT(); ND_PRINT((ndo, " maxquota")); UINTOUT(); ND_PRINT((ndo, " minquota")); UINTOUT(); ND_PRINT((ndo, " owner")); UINTOUT(); ND_PRINT((ndo, " create")); DATEOUT(); ND_PRINT((ndo, " access")); DATEOUT(); ND_PRINT((ndo, " update")); DATEOUT(); ND_PRINT((ndo, " expire")); DATEOUT(); ND_PRINT((ndo, " backup")); DATEOUT(); ND_PRINT((ndo, " copy")); DATEOUT(); break; case 115: /* Old list partitions */ break; case 116: /* List volumes */ case 121: /* List one volume */ { unsigned long i, j; ND_TCHECK2(bp[0], 4); j = EXTRACT_32BITS(bp); bp += sizeof(int32_t); for (i = 0; i < j; i++) { ND_PRINT((ndo, " name")); VECOUT(32); ND_PRINT((ndo, " volid")); UINTOUT(); ND_PRINT((ndo, " type")); bp += sizeof(int32_t) * 21; if (i != j - 1) ND_PRINT((ndo, ",")); } if (j == 0) ND_PRINT((ndo, " ")); } break; default: ; } } else { /* * Otherwise, just print out the return code */ ND_PRINT((ndo, " errcode")); INTOUT(); } return; trunc: ND_PRINT((ndo, " [|vol]")); } /* * Handle calls to the AFS BOS service */ static void bos_print(netdissect_options *ndo, register const u_char *bp, int length) { int bos_op; if (length <= (int)sizeof(struct rx_header)) return; if (ndo->ndo_snapend - bp + 1 <= (int)(sizeof(struct rx_header) + sizeof(int32_t))) { goto trunc; } /* * Print out the afs call we're invoking. The table used here was * gleaned from bozo/bosint.xg */ bos_op = EXTRACT_32BITS(bp + sizeof(struct rx_header)); ND_PRINT((ndo, " bos call %s", tok2str(bos_req, "op#%d", bos_op))); /* * Decode some of the arguments to the BOS calls */ bp += sizeof(struct rx_header) + 4; switch (bos_op) { case 80: /* Create B node */ ND_PRINT((ndo, " type")); STROUT(BOSNAMEMAX); ND_PRINT((ndo, " instance")); STROUT(BOSNAMEMAX); break; case 81: /* Delete B node */ case 83: /* Get status */ case 85: /* Get instance info */ case 87: /* Add super user */ case 88: /* Delete super user */ case 93: /* Set cell name */ case 96: /* Add cell host */ case 97: /* Delete cell host */ case 104: /* Restart */ case 106: /* Uninstall */ case 108: /* Exec */ case 112: /* Getlog */ case 114: /* Get instance strings */ STROUT(BOSNAMEMAX); break; case 82: /* Set status */ case 98: /* Set T status */ STROUT(BOSNAMEMAX); ND_PRINT((ndo, " status")); INTOUT(); break; case 86: /* Get instance parm */ STROUT(BOSNAMEMAX); ND_PRINT((ndo, " num")); INTOUT(); break; case 84: /* Enumerate instance */ case 89: /* List super users */ case 90: /* List keys */ case 91: /* Add key */ case 92: /* Delete key */ case 95: /* Get cell host */ INTOUT(); break; case 105: /* Install */ STROUT(BOSNAMEMAX); ND_PRINT((ndo, " size")); INTOUT(); ND_PRINT((ndo, " flags")); INTOUT(); ND_PRINT((ndo, " date")); INTOUT(); break; default: ; } return; trunc: ND_PRINT((ndo, " [|bos]")); } /* * Handle replies to the AFS BOS Service */ static void bos_reply_print(netdissect_options *ndo, register const u_char *bp, int length, int32_t opcode) { const struct rx_header *rxh; if (length <= (int)sizeof(struct rx_header)) return; rxh = (const struct rx_header *) bp; /* * Print out the afs call we're invoking. The table used here was * gleaned from volser/volint.xg */ ND_PRINT((ndo, " bos reply %s", tok2str(bos_req, "op#%d", opcode))); bp += sizeof(struct rx_header); /* * If it was a data packet, interpret the response. */ if (rxh->type == RX_PACKET_TYPE_DATA) /* Well, no, not really. Leave this for later */ ; else { /* * Otherwise, just print out the return code */ ND_PRINT((ndo, " errcode")); INTOUT(); } return; trunc: ND_PRINT((ndo, " [|bos]")); } /* * Check to see if this is a Ubik opcode. */ static int is_ubik(uint32_t opcode) { if ((opcode >= VOTE_LOW && opcode <= VOTE_HIGH) || (opcode >= DISK_LOW && opcode <= DISK_HIGH)) return(1); else return(0); } /* * Handle Ubik opcodes to any one of the replicated database services */ static void ubik_print(netdissect_options *ndo, register const u_char *bp) { int ubik_op; int32_t temp; /* * Print out the afs call we're invoking. The table used here was * gleaned from ubik/ubik_int.xg */ ubik_op = EXTRACT_32BITS(bp + sizeof(struct rx_header)); ND_PRINT((ndo, " ubik call %s", tok2str(ubik_req, "op#%d", ubik_op))); /* * Decode some of the arguments to the Ubik calls */ bp += sizeof(struct rx_header) + 4; switch (ubik_op) { case 10000: /* Beacon */ ND_TCHECK2(bp[0], 4); temp = EXTRACT_32BITS(bp); bp += sizeof(int32_t); ND_PRINT((ndo, " syncsite %s", temp ? "yes" : "no")); ND_PRINT((ndo, " votestart")); DATEOUT(); ND_PRINT((ndo, " dbversion")); UBIK_VERSIONOUT(); ND_PRINT((ndo, " tid")); UBIK_VERSIONOUT(); break; case 10003: /* Get sync site */ ND_PRINT((ndo, " site")); UINTOUT(); break; case 20000: /* Begin */ case 20001: /* Commit */ case 20007: /* Abort */ case 20008: /* Release locks */ case 20010: /* Writev */ ND_PRINT((ndo, " tid")); UBIK_VERSIONOUT(); break; case 20002: /* Lock */ ND_PRINT((ndo, " tid")); UBIK_VERSIONOUT(); ND_PRINT((ndo, " file")); INTOUT(); ND_PRINT((ndo, " pos")); INTOUT(); ND_PRINT((ndo, " length")); INTOUT(); temp = EXTRACT_32BITS(bp); bp += sizeof(int32_t); tok2str(ubik_lock_types, "type %d", temp); break; case 20003: /* Write */ ND_PRINT((ndo, " tid")); UBIK_VERSIONOUT(); ND_PRINT((ndo, " file")); INTOUT(); ND_PRINT((ndo, " pos")); INTOUT(); break; case 20005: /* Get file */ ND_PRINT((ndo, " file")); INTOUT(); break; case 20006: /* Send file */ ND_PRINT((ndo, " file")); INTOUT(); ND_PRINT((ndo, " length")); INTOUT(); ND_PRINT((ndo, " dbversion")); UBIK_VERSIONOUT(); break; case 20009: /* Truncate */ ND_PRINT((ndo, " tid")); UBIK_VERSIONOUT(); ND_PRINT((ndo, " file")); INTOUT(); ND_PRINT((ndo, " length")); INTOUT(); break; case 20012: /* Set version */ ND_PRINT((ndo, " tid")); UBIK_VERSIONOUT(); ND_PRINT((ndo, " oldversion")); UBIK_VERSIONOUT(); ND_PRINT((ndo, " newversion")); UBIK_VERSIONOUT(); break; default: ; } return; trunc: ND_PRINT((ndo, " [|ubik]")); } /* * Handle Ubik replies to any one of the replicated database services */ static void ubik_reply_print(netdissect_options *ndo, register const u_char *bp, int length, int32_t opcode) { const struct rx_header *rxh; if (length < (int)sizeof(struct rx_header)) return; rxh = (const struct rx_header *) bp; /* * Print out the ubik call we're invoking. This table was gleaned * from ubik/ubik_int.xg */ ND_PRINT((ndo, " ubik reply %s", tok2str(ubik_req, "op#%d", opcode))); bp += sizeof(struct rx_header); /* * If it was a data packet, print out the arguments to the Ubik calls */ if (rxh->type == RX_PACKET_TYPE_DATA) switch (opcode) { case 10000: /* Beacon */ ND_PRINT((ndo, " vote no")); break; case 20004: /* Get version */ ND_PRINT((ndo, " dbversion")); UBIK_VERSIONOUT(); break; default: ; } /* * Otherwise, print out "yes" it it was a beacon packet (because * that's how yes votes are returned, go figure), otherwise * just print out the error code. */ else switch (opcode) { case 10000: /* Beacon */ ND_PRINT((ndo, " vote yes until")); DATEOUT(); break; default: ND_PRINT((ndo, " errcode")); INTOUT(); } return; trunc: ND_PRINT((ndo, " [|ubik]")); } /* * Handle RX ACK packets. */ static void rx_ack_print(netdissect_options *ndo, register const u_char *bp, int length) { const struct rx_ackPacket *rxa; int i, start, last; uint32_t firstPacket; if (length < (int)sizeof(struct rx_header)) return; bp += sizeof(struct rx_header); /* * This may seem a little odd .... the rx_ackPacket structure * contains an array of individual packet acknowledgements * (used for selective ack/nack), but since it's variable in size, * we don't want to truncate based on the size of the whole * rx_ackPacket structure. */ ND_TCHECK2(bp[0], sizeof(struct rx_ackPacket) - RX_MAXACKS); rxa = (const struct rx_ackPacket *) bp; bp += (sizeof(struct rx_ackPacket) - RX_MAXACKS); /* * Print out a few useful things from the ack packet structure */ if (ndo->ndo_vflag > 2) ND_PRINT((ndo, " bufspace %d maxskew %d", (int) EXTRACT_16BITS(&rxa->bufferSpace), (int) EXTRACT_16BITS(&rxa->maxSkew))); firstPacket = EXTRACT_32BITS(&rxa->firstPacket); ND_PRINT((ndo, " first %d serial %d reason %s", firstPacket, EXTRACT_32BITS(&rxa->serial), tok2str(rx_ack_reasons, "#%d", (int) rxa->reason))); /* * Okay, now we print out the ack array. The way _this_ works * is that we start at "first", and step through the ack array. * If we have a contiguous range of acks/nacks, try to * collapse them into a range. * * If you're really clever, you might have noticed that this * doesn't seem quite correct. Specifically, due to structure * padding, sizeof(struct rx_ackPacket) - RX_MAXACKS won't actually * yield the start of the ack array (because RX_MAXACKS is 255 * and the structure will likely get padded to a 2 or 4 byte * boundary). However, this is the way it's implemented inside * of AFS - the start of the extra fields are at * sizeof(struct rx_ackPacket) - RX_MAXACKS + nAcks, which _isn't_ * the exact start of the ack array. Sigh. That's why we aren't * using bp, but instead use rxa->acks[]. But nAcks gets added * to bp after this, so bp ends up at the right spot. Go figure. */ if (rxa->nAcks != 0) { ND_TCHECK2(bp[0], rxa->nAcks); /* * Sigh, this is gross, but it seems to work to collapse * ranges correctly. */ for (i = 0, start = last = -2; i < rxa->nAcks; i++) if (rxa->acks[i] == RX_ACK_TYPE_ACK) { /* * I figured this deserved _some_ explanation. * First, print "acked" and the packet seq * number if this is the first time we've * seen an acked packet. */ if (last == -2) { ND_PRINT((ndo, " acked %d", firstPacket + i)); start = i; } /* * Otherwise, if there is a skip in * the range (such as an nacked packet in * the middle of some acked packets), * then print the current packet number * seperated from the last number by * a comma. */ else if (last != i - 1) { ND_PRINT((ndo, ",%d", firstPacket + i)); start = i; } /* * We always set last to the value of * the last ack we saw. Conversely, start * is set to the value of the first ack * we saw in a range. */ last = i; /* * Okay, this bit a code gets executed when * we hit a nack ... in _this_ case we * want to print out the range of packets * that were acked, so we need to print * the _previous_ packet number seperated * from the first by a dash (-). Since we * already printed the first packet above, * just print the final packet. Don't * do this if there will be a single-length * range. */ } else if (last == i - 1 && start != last) ND_PRINT((ndo, "-%d", firstPacket + i - 1)); /* * So, what's going on here? We ran off the end of the * ack list, and if we got a range we need to finish it up. * So we need to determine if the last packet in the list * was an ack (if so, then last will be set to it) and * we need to see if the last range didn't start with the * last packet (because if it _did_, then that would mean * that the packet number has already been printed and * we don't need to print it again). */ if (last == i - 1 && start != last) ND_PRINT((ndo, "-%d", firstPacket + i - 1)); /* * Same as above, just without comments */ for (i = 0, start = last = -2; i < rxa->nAcks; i++) if (rxa->acks[i] == RX_ACK_TYPE_NACK) { if (last == -2) { ND_PRINT((ndo, " nacked %d", firstPacket + i)); start = i; } else if (last != i - 1) { ND_PRINT((ndo, ",%d", firstPacket + i)); start = i; } last = i; } else if (last == i - 1 && start != last) ND_PRINT((ndo, "-%d", firstPacket + i - 1)); if (last == i - 1 && start != last) ND_PRINT((ndo, "-%d", firstPacket + i - 1)); bp += rxa->nAcks; } /* * These are optional fields; depending on your version of AFS, * you may or may not see them */ #define TRUNCRET(n) if (ndo->ndo_snapend - bp + 1 <= n) return; if (ndo->ndo_vflag > 1) { TRUNCRET(4); ND_PRINT((ndo, " ifmtu")); INTOUT(); TRUNCRET(4); ND_PRINT((ndo, " maxmtu")); INTOUT(); TRUNCRET(4); ND_PRINT((ndo, " rwind")); INTOUT(); TRUNCRET(4); ND_PRINT((ndo, " maxpackets")); INTOUT(); } return; trunc: ND_PRINT((ndo, " [|ack]")); } #undef TRUNCRET