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packet-afs.c
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/* packet-rx.c
* Routines for RX packet dissection
* Copyright 1999, Nathan Neulinger <nneul@umr.edu>
* Based on routines from tcpdump patches by
* Ken Hornstein <kenh@cmf.nrl.navy.mil>
* Portions based on information retrieved from the RX definitions
* in Arla, the free AFS client at http://www.stacken.kth.se/project/arla/
*
* $Id: packet-afs.c,v 1.7 1999/11/17 21:58:31 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@unicom.net>
* Copyright 1998 Gerald Combs
*
* Copied from packet-tftp.c
*
* This program 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
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#include <string.h>
#include <glib.h>
#include "packet.h"
#include "conversation.h"
#include "packet-rx.h"
#include "packet-afs.h"
#include "resolv.h"
static const value_string 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" },
{ 0, NULL },
};
static const value_string cb_req[] = {
{ 204, "callback" },
{ 205, "initcb" },
{ 206, "probe" },
{ 207, "getlock" },
{ 208, "getce" },
{ 209, "xstatver" },
{ 210, "getxstat" },
{ 211, "initcb2" },
{ 212, "whoareyou" },
{ 213, "initcb3" },
{ 214, "probeuuid" },
{ 0, NULL },
};
static const value_string prot_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" },
{ 0, NULL },
};
static const value_string 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" },
{ 0, NULL },
};
static const value_string 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 value_string 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" },
{ 0, NULL },
};
static const value_string 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" },
{ 0, NULL },
};
static const value_string ubik_req[] = {
{ 10000, "vote-beacon" },
{ 10001, "vote-debug-old" },
{ 10002, "vote-sdebug-old" },
{ 10003, "vote-getsyncsite" },
{ 10004, "vote-debug" },
{ 10005, "vote-sdebug" },
{ 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 },
};
static const value_string cb_types[] = {
{ CB_TYPE_EXCLUSIVE, "exclusive" },
{ CB_TYPE_SHARED, "shared" },
{ CB_TYPE_DROPPED, "dropped" },
{ 0, NULL },
};
static const value_string afs_errors[] = {
/* VOL Errors */
{ 363520, "ID Exists"},
{ 363521, "IO Error"},
{ 363522, "Name Exists"},
{ 363523, "Create Failed"},
{ 363524, "Entry Not Found"},
{ 363525, "Empty"},
{ 363526, "Entry Deleted"},
{ 363527, "Bad Name"},
{ 363528, "Bad Index"},
{ 363529, "Bad Volume Type"},
{ 363530, "Bad Partition"},
{ 363531, "Bad Server"},
{ 363532, "Bad Replicate Server"},
{ 363533, "No Replicate Server"},
{ 363534, "Duplicate Replicate Server"},
{ 363535, "ReadWrite Volume Not Found"},
{ 363536, "Bad Reference Count"},
{ 363537, "Size Exceeded"},
{ 363538, "Bad Entry"},
{ 363539, "Bad Volume ID Bump"},
{ 363540, "Already has edit"},
{ 363541, "Entry Locked"},
{ 363542, "Bad Volume Operation"},
{ 363543, "Bad Rel Lock Type"},
{ 363544, "Rerelease"},
{ 363545, "Bad Server"},
{ 363546, "Permission Denied"},
{ 363547, "Out of Memory"},
/* KAUTH Errors */
{ 180480, "Database Inconsistent"},
{ 180481, "Exists"},
{ 180482, "IO"},
{ 180483, "Create Failed"},
{ 180484, "noent"},
{ 180485, "Empty"},
{ 180486, "Bad Name"},
{ 180487, "Bad Index"},
{ 180488, "No auth"},
{ 180489, "Answer too long"},
{ 180490, "Bad Request"},
{ 180491, "Old Interface"},
{ 180492, "Bad Argument"},
{ 180493, "Bad Command"},
{ 180494, "No keys"},
{ 180495, "Read PW"},
{ 180496, "Bad key"},
{ 180497, "Ubik Init"},
{ 180498, "Ubik Call"},
{ 180499, "Bad Protocol"},
{ 180500, "No cells"},
{ 180501, "No cell"},
{ 180502, "Too many ubiks"},
{ 180503, "Too many keys"},
{ 180504, "Bad ticket"},
{ 180505, "Unknown Key"},
{ 180506, "Key Cache Invalid"},
{ 180507, "Bad Server"},
{ 180508, "Bad User"},
{ 180509, "Bad CPW"},
{ 180510, "Bad Create"},
{ 180511, "No ticket"},
{ 180512, "Assoc user"},
{ 180513, "Not special"},
{ 180514, "Clock skew too great"},
{ 180515, "No recursion"},
{ 180516, "RX failed"},
{ 180517, "Null password"},
{ 180518, "Internal error"},
{ 180519, "Password expired"},
{ 180520, "Reused"},
{ 180521, "Too soon"},
{ 180522, "Locked"},
/* PT Errors */
{ 267264, "Exists"},
{ 267265, "ID Exists"},
{ 267266, "No IDs"},
{ 267267, "DB Failed"},
{ 267268, "No such entry"},
{ 267269, "Permission denied"},
{ 267270, "Not group"},
{ 267271, "Not user"},
{ 267272, "Bad name"},
{ 267273, "Bad argument"},
{ 267274, "No more"},
{ 267275, "Bad DB"},
{ 267276, "Group empty"},
{ 267277, "Inconsistent"},
{ 267278, "DB Address"},
{ 267279, "Too many"},
{ 267280, "No memory"},
/* Volume server errors */
{ 1492325120, "Release error"},
{ 1492325121, "No op"},
{ 1492325122, "Read dump error"},
{ 1492325123, "Dump error"},
{ 1492325124, "Attach error"},
{ 1492325125, "Illegal partition"},
{ 1492325126, "Detach error"},
{ 1492325127, "Bad access"},
{ 1492325128, "VLDB error"},
{ 1492325129, "Bad Name"},
{ 1492325130, "Volume moved"},
{ 1492325131, "Bad operation"},
{ 1492325132, "Bad release"},
{ 1492325133, "Volume busy"},
{ 1492325134, "No memory"},
{ 1492325135, "No volume"},
{ 1492325136, "Multiple RW volumes"},
{ 1492325137, "Failed operation"},
/* add more of these errors to decode the errcode responses */
{ 0, NULL },
};
static const value_string port_types[] = {
{ AFS_PORT_FS, "File Server" },
{ AFS_PORT_CB, "Callback Server" },
{ AFS_PORT_BOS, "BOS Server" },
{ AFS_PORT_PROT, "Protection Server" },
{ AFS_PORT_VLDB, "Volume Location Database Server" },
{ AFS_PORT_KAUTH, "Kerberos Authentication Server" },
{ AFS_PORT_ERROR, "Error Server" },
{ AFS_PORT_VOL, "Volume Server" },
{ AFS_PORT_RMTSYS, "Rmtsys? Server" },
{ AFS_PORT_UPDATE, "Update? Server" },
{ AFS_PORT_BACKUP, "Backup Server" },
{ 0, NULL }
};
static const value_string port_types_short[] = {
{ AFS_PORT_FS, "FS" },
{ AFS_PORT_CB, "CB" },
{ AFS_PORT_BOS, "BOS" },
{ AFS_PORT_PROT, "PROT" },
{ AFS_PORT_VLDB, "VLDB" },
{ AFS_PORT_KAUTH, "KAUTH" },
{ AFS_PORT_ERROR, "ERR" },
{ AFS_PORT_VOL, "VOL" },
{ AFS_PORT_RMTSYS, "RMT" },
{ AFS_PORT_UPDATE, "UPD" },
{ AFS_PORT_BACKUP, "BKUP" },
{ 0, NULL }
};
static const value_string ubik_lock_types[] = {
{ 1, "read" },
{ 2, "write" },
{ 3, "wait" },
{ 0, NULL },
};
static const value_string volume_types[] = {
{ 0, "read-write" },
{ 1, "read-only" },
{ 2, "backup" },
{ 0, NULL },
};
int afs_packet_init_count = 100;
struct afs_request_key {
guint32 conversation, callnumber;
guint16 service;
};
struct afs_request_val {
guint32 opcode;
};
GHashTable *afs_request_hash = NULL;
GMemChunk *afs_request_keys = NULL;
GMemChunk *afs_request_vals = NULL;
static int proto_afs = -1;
static int hf_afs_fs = -1;
static int hf_afs_cb = -1;
static int hf_afs_prot = -1;
static int hf_afs_vldb = -1;
static int hf_afs_kauth = -1;
static int hf_afs_vol = -1;
static int hf_afs_error = -1;
static int hf_afs_bos = -1;
static int hf_afs_update = -1;
static int hf_afs_rmtsys = -1;
static int hf_afs_ubik = -1;
static int hf_afs_backup = -1;
static int hf_afs_fs_opcode = -1;
static int hf_afs_cb_opcode = -1;
static int hf_afs_prot_opcode = -1;
static int hf_afs_vldb_opcode = -1;
static int hf_afs_kauth_opcode = -1;
static int hf_afs_vol_opcode = -1;
static int hf_afs_error_opcode = -1;
static int hf_afs_bos_opcode = -1;
static int hf_afs_update_opcode = -1;
static int hf_afs_rmtsys_opcode = -1;
static int hf_afs_ubik_opcode = -1;
static int hf_afs_backup_opcode = -1;
static int hf_afs_fs_fid_volume = -1;
static int hf_afs_fs_fid_vnode = -1;
static int hf_afs_fs_fid_uniqifier = -1;
static int hf_afs_fs_offset = -1;
static int hf_afs_fs_length = -1;
static int hf_afs_fs_flength = -1;
static int hf_afs_fs_errcode = -1;
static int hf_afs_fs_data = -1;
static int hf_afs_fs_name = -1;
static int hf_afs_fs_oldname = -1;
static int hf_afs_fs_newname = -1;
static int hf_afs_fs_symlink_name = -1;
static int hf_afs_fs_symlink_content = -1;
static int hf_afs_fs_volid = -1;
static int hf_afs_fs_volname = -1;
static int hf_afs_fs_timestamp = -1;
static int hf_afs_fs_acl_datasize = -1;
static int hf_afs_fs_acl_count_negative = -1;
static int hf_afs_fs_acl_count_positive = -1;
static int hf_afs_fs_acl_entity = -1;
static int hf_afs_fs_acl_r = -1;
static int hf_afs_fs_acl_l = -1;
static int hf_afs_fs_acl_i = -1;
static int hf_afs_fs_acl_d = -1;
static int hf_afs_fs_acl_w = -1;
static int hf_afs_fs_acl_k = -1;
static int hf_afs_fs_acl_a = -1;
static int hf_afs_fs_callback_version = -1;
static int hf_afs_fs_callback_expires = -1;
static int hf_afs_fs_callback_type = -1;
static int hf_afs_bos_errcode = -1;
static int hf_afs_bos_type = -1;
static int hf_afs_bos_instance = -1;
static int hf_afs_bos_status = -1;
static int hf_afs_bos_num = -1;
static int hf_afs_bos_size = -1;
static int hf_afs_bos_flags = -1;
static int hf_afs_bos_date = -1;
static int hf_afs_bos_content = -1;
static int hf_afs_vldb_errcode = -1;
static int hf_afs_vldb_name = -1;
static int hf_afs_vldb_id = -1;
static int hf_afs_vldb_type = -1;
static int hf_afs_vldb_bump = -1;
static int hf_afs_vldb_index = -1;
static int hf_afs_vldb_nextindex = -1;
static int hf_afs_vldb_count = -1;
static int hf_afs_vldb_numservers = -1;
static int hf_afs_vldb_server = -1;
static int hf_afs_vldb_serveruuid = -1;
static int hf_afs_vldb_partition = -1;
static int hf_afs_vldb_rovol = -1;
static int hf_afs_vldb_rwvol = -1;
static int hf_afs_vldb_bkvol = -1;
static int hf_afs_kauth_errcode = -1;
static int hf_afs_kauth_princ = -1;
static int hf_afs_kauth_realm = -1;
static int hf_afs_kauth_domain = -1;
static int hf_afs_kauth_kvno = -1;
static int hf_afs_kauth_name = -1;
static int hf_afs_kauth_data = -1;
static int hf_afs_vol_errcode = -1;
static int hf_afs_vol_count = -1;
static int hf_afs_vol_id = -1;
static int hf_afs_vol_name = -1;
static int hf_afs_cb_errcode = -1;
static int hf_afs_cb_callback_version = -1;
static int hf_afs_cb_callback_type = -1;
static int hf_afs_cb_callback_expires = -1;
static int hf_afs_cb_fid_volume = -1;
static int hf_afs_cb_fid_vnode = -1;
static int hf_afs_cb_fid_uniqifier = -1;
static int hf_afs_prot_errcode = -1;
static int hf_afs_prot_name = -1;
static int hf_afs_prot_id = -1;
static int hf_afs_prot_count = -1;
static int hf_afs_prot_oldid = -1;
static int hf_afs_prot_newid = -1;
static int hf_afs_prot_pos = -1;
static int hf_afs_prot_flag = -1;
static int hf_afs_prot_uid = -1;
static int hf_afs_prot_gid = -1;
static int hf_afs_prot_maxuid = -1;
static int hf_afs_prot_maxgid = -1;
static int hf_afs_backup_errcode = -1;
static int hf_afs_ubik_errcode = -1;
static int hf_afs_ubik_version_epoch = -1;
static int hf_afs_ubik_version_counter = -1;
static int hf_afs_ubik_votestart = -1;
static int hf_afs_ubik_syncsite = -1;
static int hf_afs_ubik_site = -1;
static int hf_afs_ubik_file = -1;
static int hf_afs_ubik_pos = -1;
static int hf_afs_ubik_length = -1;
static int hf_afs_ubik_locktype = -1;
static int hf_afs_ubik_voteend = -1;
static int hf_afs_ubik_votetype = -1;
static gint ett_afs = -1;
static gint ett_afs_op = -1;
static gint ett_afs_acl = -1;
static gint ett_afs_fid = -1;
static gint ett_afs_callback = -1;
static gint ett_afs_ubikver = -1;
/*
* Dissector prototypes
*/
static void dissect_fs_request(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_fs_reply(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_cb_request(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_cb_reply(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_bos_request(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_bos_reply(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_vol_request(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_vol_reply(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_ubik_request(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_ubik_reply(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_kauth_request(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_kauth_reply(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_prot_request(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_prot_reply(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_vldb_request(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_vldb_reply(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_backup_request(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
static void dissect_backup_reply(const u_char *pd,
int offset, frame_data *fd, proto_tree *tree, int opcode);
/*
* Hash Functions - copied from packet-afs.c
*/
gint
afs_equal(gconstpointer v, gconstpointer w)
{
struct afs_request_key *v1 = (struct afs_request_key *)v;
struct afs_request_key *v2 = (struct afs_request_key *)w;
if (v1 -> conversation == v2 -> conversation &&
v1 -> service == v2 -> service &&
v1 -> callnumber == v2 -> callnumber ) {
return 1;
}
return 0;
}
guint
afs_hash (gconstpointer v)
{
struct afs_request_key *key = (struct afs_request_key *)v;
guint val;
val = key -> conversation + key -> service + key -> callnumber;
return val;
}
/*
* Protocol initialization
*/
static void
afs_init_protocol(void)
{
if (afs_request_hash)
g_hash_table_destroy(afs_request_hash);
if (afs_request_keys)
g_mem_chunk_destroy(afs_request_keys);
if (afs_request_vals)
g_mem_chunk_destroy(afs_request_vals);
afs_request_hash = g_hash_table_new(afs_hash, afs_equal);
afs_request_keys = g_mem_chunk_new("afs_request_keys",
sizeof(struct afs_request_key),
afs_packet_init_count * sizeof(struct afs_request_key),
G_ALLOC_AND_FREE);
afs_request_vals = g_mem_chunk_new("afs_request_vals",
sizeof(struct afs_request_val),
afs_packet_init_count * sizeof(struct afs_request_val),
G_ALLOC_AND_FREE);
}
/*
* Dissection routines
*/
void
dissect_afs(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
{
proto_tree *afs_tree, *afs_op_tree, *ti;
struct rx_header *rxh;
struct afs_header *afsh;
int port, node, typenode, opcode;
value_string const *vals;
int reply = 0;
int doffset = 0;
conversation_t *conversation;
struct afs_request_key request_key, *new_request_key;
struct afs_request_val *request_val;
void (*dissector)(const u_char *pd, int offset,
frame_data *fd, proto_tree *tree, int opcode);
rxh = (struct rx_header *) &pd[offset];
doffset = offset + sizeof(struct rx_header);
afsh = (struct afs_header *) &pd[doffset];
/* get at least a full packet structure */
if ( !BYTES_ARE_IN_FRAME(offset, sizeof(struct rx_header)) )
return;
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "AFS (RX)");
reply = (rxh->flags & RX_CLIENT_INITIATED) == 0;
port = ((reply == 0) ? pi.destport : pi.srcport );
/*
* Find out what conversation this packet is part of.
* XXX - this should really be done by the transport-layer protocol,
* although for connectionless transports, we may not want to do that
* unless we know some higher-level protocol will want it - or we
* may want to do it, so you can say e.g. "show only the packets in
* this UDP 'connection'".
*
* Note that we don't have to worry about the direction this packet
* was going - the conversation code handles that for us, treating
* packets from A:X to B:Y as being part of the same conversation as
* packets from B:Y to A:X.
*/
conversation = find_conversation(&pi.src, &pi.dst, pi.ptype,
pi.srcport, pi.destport);
if (conversation == NULL) {
/* It's not part of any conversation - create a new one. */
conversation = conversation_new(&pi.src, &pi.dst, pi.ptype,
pi.srcport, pi.destport, NULL);
}
request_key.conversation = conversation->index;
request_key.service = ntohs(rxh->serviceId);
request_key.callnumber = ntohl(rxh->callNumber);
request_val = (struct afs_request_val *) g_hash_table_lookup(
afs_request_hash, &request_key);
/* only allocate a new hash element when it's a request */
opcode = 0;
if ( !request_val && !reply)
{
new_request_key = g_mem_chunk_alloc(afs_request_keys);
*new_request_key = request_key;
request_val = g_mem_chunk_alloc(afs_request_vals);
request_val -> opcode = ntohl(afsh->opcode);
opcode = request_val->opcode;
g_hash_table_insert(afs_request_hash, new_request_key,
request_val);
}
if ( request_val )
{
opcode = request_val->opcode;
}
node = 0;
typenode = 0;
vals = NULL;
dissector = NULL;
switch (port)
{
case AFS_PORT_FS:
typenode = hf_afs_fs;
node = hf_afs_fs_opcode;
vals = fs_req;
dissector = reply ? dissect_fs_reply : dissect_fs_request;
break;
case AFS_PORT_CB:
typenode = hf_afs_cb;
node = hf_afs_cb_opcode;
vals = cb_req;
dissector = reply ? dissect_cb_reply : dissect_cb_request;
break;
case AFS_PORT_PROT:
typenode = hf_afs_prot;
node = hf_afs_prot_opcode;
vals = prot_req;
dissector = reply ? dissect_prot_reply : dissect_prot_request;
break;
case AFS_PORT_VLDB:
typenode = hf_afs_vldb;
node = hf_afs_vldb_opcode;
vals = vldb_req;
dissector = reply ? dissect_vldb_reply : dissect_vldb_request;
break;
case AFS_PORT_KAUTH:
typenode = hf_afs_kauth;
node = hf_afs_kauth_opcode;
vals = kauth_req;
dissector = reply ? dissect_kauth_reply : dissect_kauth_request;
break;
case AFS_PORT_VOL:
typenode = hf_afs_vol;
node = hf_afs_vol_opcode;
vals = vol_req;
dissector = reply ? dissect_vol_reply : dissect_vol_request;
break;
case AFS_PORT_ERROR:
typenode = hf_afs_error;
node = hf_afs_error_opcode;
/* dissector = reply ? dissect_error_reply : dissect_error_request; */
break;
case AFS_PORT_BOS:
typenode = hf_afs_bos;
node = hf_afs_bos_opcode;
vals = bos_req;
dissector = reply ? dissect_bos_reply : dissect_bos_request;
break;
case AFS_PORT_UPDATE:
typenode = hf_afs_update;
node = hf_afs_update_opcode;
/* dissector = reply ? dissect_update_reply : dissect_update_request; */
break;
case AFS_PORT_RMTSYS:
typenode = hf_afs_rmtsys;
node = hf_afs_rmtsys_opcode;
/* dissector = reply ? dissect_rmtsys_reply : dissect_rmtsys_request; */
break;
case AFS_PORT_BACKUP:
typenode = hf_afs_backup;
node = hf_afs_backup_opcode;
dissector = reply ? dissect_backup_reply : dissect_backup_request;
break;
}
if ( (opcode >= VOTE_LOW && opcode <= VOTE_HIGH) ||
(opcode >= DISK_LOW && opcode <= DISK_HIGH) )
{
typenode = hf_afs_ubik;
node = hf_afs_ubik_opcode;
vals = ubik_req;
dissector = reply ? dissect_ubik_reply : dissect_ubik_request;
}
if ( vals )
{
if (check_col(fd, COL_INFO))
col_add_fstr(fd, COL_INFO, "%s %s: %s (%d)",
val_to_str(port, port_types_short, "Unknown(%d)"),
reply ? "Reply" : "Request",
val_to_str(opcode, vals, "Unknown(%d)"), opcode);
}
else
{
if (check_col(fd, COL_INFO))
col_add_fstr(fd, COL_INFO, "%s %s: Unknown(%d)",
val_to_str(port, port_types_short, "Unknown(%d)"),
reply ? "Reply" : "Request",
opcode);
}
if (tree) {
ti = proto_tree_add_item(tree, proto_afs, doffset, END_OF_FRAME);
afs_tree = proto_item_add_subtree(ti, ett_afs);
if ( !BYTES_ARE_IN_FRAME(offset, sizeof(struct rx_header) +
sizeof(struct afs_header)) )
{
proto_tree_add_text(afs_tree, doffset, END_OF_FRAME,
"Service: %s %s (Truncated)",
val_to_str(port, port_types, "Unknown(%d)"),
reply ? "Reply" : "Request");
return;
}
else
{
proto_tree_add_text(afs_tree, doffset, END_OF_FRAME,
"Service: %s %s",
val_to_str(port, port_types, "Unknown(%d)"),
reply ? "Reply" : "Request");
}
/* until we do cache, can't handle replies */
ti = NULL;
if ( !reply && node != 0 )
{
ti = proto_tree_add_item(afs_tree,
node, doffset, 4, opcode);
}
else if ( reply && node != 0 )
{
/* the opcode isn't in this packet */
ti = proto_tree_add_item(afs_tree,
node, doffset, 0, opcode);
}
else
{
ti = proto_tree_add_text(afs_tree,
doffset, 0, "Operation: Unknown");
}
/* Add the subtree for this particular service */
afs_op_tree = proto_item_add_subtree(ti, ett_afs_op);
if ( typenode != 0 )
{
/* indicate the type of request */
proto_tree_add_item_hidden(afs_tree, typenode, doffset, 0, 1);
}
/* Process the packet according to what service it is */
if ( dissector )
{
(*dissector)(pd,offset,fd,afs_op_tree,opcode);
}
}
/* if it's the last packet, and it's a reply, remove opcode
from hash */
/* ignoring for now, I'm not sure how the chunk deallocation works */
if ( rxh->flags & RX_LAST_PACKET && reply )
{
}
}
/*
* Macros for helper dissection routines
*
* The macros are here to save on coding. They assume that
* the current offset is in 'curoffset', and that the offset
* should be incremented after performing the macro's operation.
*/
/* Get the next available integer, be sure and call TRUNC beforehand */
#define GETINT() (ntohl( *((int*)&pd[curoffset]) ))
/* Check if enough bytes are present, if not, return to caller
after adding a 'Truncated' message to tree */
#define TRUNC(bytes) \
if(!BYTES_ARE_IN_FRAME(curoffset,(bytes))) \
{ proto_tree_add_text(tree,curoffset,END_OF_FRAME,"Truncated"); \
return; }
/* Output a unsigned integer, stored into field 'field'
Assumes it is in network byte order, converts to host before using */
#define UINTOUT(field) \
TRUNC(sizeof(guint32)) \
proto_tree_add_item(tree,field,curoffset,sizeof(guint32), GETINT()); \
curoffset += 4;
/* Output a unsigned integer, stored into field 'field'
Assumes it is in network byte order, converts to host before using */
#define IPOUT(field) \
TRUNC(sizeof(gint32)) \
proto_tree_add_item(tree,field,curoffset,sizeof(gint32),\
*((int*)&pd[curoffset]));\
curoffset += 4;
/* Output a unix timestamp, after converting to a timeval */
#define BIGDATEOUT(field) \
{ struct timeval tv; \
TRUNC(2*sizeof(guint32)); \
tv.tv_sec = GETINT(); \
tv.tv_usec = GETINT(); \
proto_tree_add_item(tree,field,curoffset,2*sizeof(guint32),&tv); \
curoffset += 8; \
}
/* Output a unix timestamp, after converting to a timeval */
#define DATEOUT(field) \
{ struct timeval tv; \
TRUNC(sizeof(guint32)); \
tv.tv_sec = GETINT(); \