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Diffstat (limited to 'epan/dissectors/packet-pcnfsd.c')
-rw-r--r-- | epan/dissectors/packet-pcnfsd.c | 442 |
1 files changed, 442 insertions, 0 deletions
diff --git a/epan/dissectors/packet-pcnfsd.c b/epan/dissectors/packet-pcnfsd.c new file mode 100644 index 0000000000..40578c1e49 --- /dev/null +++ b/epan/dissectors/packet-pcnfsd.c @@ -0,0 +1,442 @@ +/* packet-pcnfsd.c + * Routines for PCNFSD dissection + * + * $Id$ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * Copyright 1998 Gerald Combs + * + * Copied from packet-ypbind.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. + */ + + +/* +Protocol information comes from the book + "NFS Illustrated" by Brent Callaghan, ISBN 0-201-32570-5 +*/ + + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <string.h> + +#include "packet-rpc.h" +#include "packet-pcnfsd.h" + +static int proto_pcnfsd = -1; +static int hf_pcnfsd_procedure_v1 = -1; +static int hf_pcnfsd_procedure_v2 = -1; +static int hf_pcnfsd_auth_client = -1; +static int hf_pcnfsd_auth_ident_obscure = -1; +static int hf_pcnfsd_auth_ident_clear = -1; +static int hf_pcnfsd_auth_password_obscure = -1; +static int hf_pcnfsd_auth_password_clear = -1; +static int hf_pcnfsd_comment = -1; +static int hf_pcnfsd_status = -1; +static int hf_pcnfsd_uid = -1; +static int hf_pcnfsd_gid = -1; +static int hf_pcnfsd_gids_count = -1; +static int hf_pcnfsd_homedir = -1; +static int hf_pcnfsd_def_umask = -1; +static int hf_pcnfsd_username = -1; + + +static gint ett_pcnfsd = -1; +static gint ett_pcnfsd_auth_ident = -1; +static gint ett_pcnfsd_auth_password = -1; +static gint ett_pcnfsd_gids = -1; + +int +dissect_pcnfsd_username(tvbuff_t *tvb, int offset, proto_tree *tree) +{ + return dissect_rpc_string(tvb, tree, hf_pcnfsd_username, offset, NULL); +} + +#define MAP_REQ_UID 0 +#define MAP_REQ_GID 1 +#define MAP_REQ_UNAME 2 +#define MAP_REQ_GNAME 3 + +static const value_string names_mapreq[] = +{ + { MAP_REQ_UID, "MAP_REQ_UID" }, + { MAP_REQ_GID, "MAP_REQ_GID" }, + { MAP_REQ_UNAME, "MAP_REQ_UNAME" }, + { MAP_REQ_GNAME, "MAP_REQ_GNAME" }, + { 0, NULL } +}; + +int +dissect_pcnfsd_mapreq(tvbuff_t *tvb, int offset, proto_tree *tree) +{ + guint32 mapreq; + + mapreq = tvb_get_ntohl(tvb, offset + 0); + + if (tree) + proto_tree_add_text(tree, tvb, offset, 4, "Request: %s (%u)", + val_to_str(mapreq, names_mapreq, "%u"), mapreq); + + offset += 4; + + return offset; +} + +int +dissect_pcnfsd2_dissect_mapreq_arg_item(tvbuff_t *tvb, int offset, + packet_info *pinfo _U_, proto_tree *tree) +{ + offset = dissect_pcnfsd_mapreq(tvb, offset, tree); + + offset = dissect_rpc_uint32(tvb, tree, hf_pcnfsd_uid, offset); + + offset = dissect_pcnfsd_username(tvb, offset, tree); + + return offset; +} + +int +dissect_pcnfsd2_mapid_call(tvbuff_t *tvb, int offset, packet_info *pinfo, + proto_tree *tree) +{ + offset = dissect_rpc_string(tvb, tree, hf_pcnfsd_comment, offset, NULL); + + offset = dissect_rpc_list(tvb, pinfo, tree, offset, + dissect_pcnfsd2_dissect_mapreq_arg_item); + + return offset; +} + +#define MAP_RES_OK 0 +#define MAP_RES_UNKNOWN 1 +#define MAP_RES_DENIED 2 + +static const value_string names_maprstat[] = +{ + { MAP_RES_OK, "MAP_RES_OK" }, + { MAP_RES_UNKNOWN, "MAP_RES_UNKNOWN" }, + { MAP_RES_DENIED, "MAP_RES_DENIED" }, + { 0, NULL } +}; + +int +dissect_pcnfsd2_dissect_mapreq_res_item(tvbuff_t *tvb, int offset, + packet_info *pinfo _U_, proto_tree *tree) +{ + guint32 maprstat; + + offset = dissect_pcnfsd_mapreq(tvb, offset, tree); + + maprstat = tvb_get_ntohl(tvb, offset + 0); + + if (tree) + proto_tree_add_text(tree, tvb, offset, 4, "Status: %s (%u)", + val_to_str(maprstat, names_maprstat, "%u"), maprstat); + + offset += 4; + + offset = dissect_rpc_uint32(tvb, tree, hf_pcnfsd_uid, offset); + + offset = dissect_pcnfsd_username(tvb, offset, tree); + + return offset; +} + +int +dissect_pcnfsd2_mapid_reply(tvbuff_t *tvb, int offset, packet_info *pinfo, + proto_tree *tree) +{ + offset = dissect_rpc_string(tvb, tree, hf_pcnfsd_comment, offset, NULL); + + offset = dissect_rpc_list(tvb, pinfo, tree, offset, + dissect_pcnfsd2_dissect_mapreq_res_item); + + return offset; +} + +/* "NFS Illustrated 14.7.13 */ +static void +pcnfsd_decode_obscure(char* data, int len) +{ + for ( ; len>0 ; len--, data++) { + *data = (*data ^ 0x5b) & 0x7f; + } +} + + +/* "NFS Illustrated" 14.7.13 */ +static int +dissect_pcnfsd2_auth_call(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + int newoffset; + char *ident = NULL; + proto_item *ident_item = NULL; + proto_tree *ident_tree = NULL; + char *password = NULL; + proto_item *password_item = NULL; + proto_tree *password_tree = NULL; + + offset = dissect_rpc_string(tvb, tree, + hf_pcnfsd_auth_client, offset, NULL); + + if (tree) { + ident_item = proto_tree_add_text(tree, tvb, + offset, -1, "Authentication Ident"); + if (ident_item) + ident_tree = proto_item_add_subtree( + ident_item, ett_pcnfsd_auth_ident); + } + newoffset = dissect_rpc_string(tvb, ident_tree, + hf_pcnfsd_auth_ident_obscure, offset, &ident); + if (ident_item) { + proto_item_set_len(ident_item, newoffset-offset); + } + + if (ident) { + pcnfsd_decode_obscure(ident, strlen(ident)); + if (ident_tree) + proto_tree_add_string(ident_tree, + hf_pcnfsd_auth_ident_clear, + tvb, offset+4, strlen(ident), ident); + } + if (ident_item) { + proto_item_set_text(ident_item, "Authentication Ident: %s", + ident); + } + if (ident) { + g_free(ident); + ident = NULL; + } + + offset = newoffset; + + if (tree) { + password_item = proto_tree_add_text(tree, tvb, + offset, -1, "Authentication Password"); + if (password_item) + password_tree = proto_item_add_subtree( + password_item, ett_pcnfsd_auth_password); + } + newoffset = dissect_rpc_string(tvb, password_tree, + hf_pcnfsd_auth_password_obscure, offset, &password); + if (password_item) { + proto_item_set_len(password_item, newoffset-offset); + } + + if (password) { + pcnfsd_decode_obscure(password, strlen(password)); + if (password_tree) + proto_tree_add_string(password_tree, + hf_pcnfsd_auth_password_clear, + tvb, offset+4, strlen(password), password); + } + if (password_item) { + proto_item_set_text(password_item, "Authentication Password: %s", + password); + } + if (password) { + g_free(password); + password = NULL; + } + + offset = newoffset; + + offset = dissect_rpc_string(tvb, tree, + hf_pcnfsd_comment, offset, NULL); + + return offset; +} + + +/* "NFS Illustrated" 14.7.13 */ +static int +dissect_pcnfsd2_auth_reply(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + int gids_count; + proto_item *gitem = NULL; + proto_tree *gtree = NULL; + int gids_i; + + offset = dissect_rpc_uint32(tvb, tree, hf_pcnfsd_status, offset); + offset = dissect_rpc_uint32(tvb, tree, hf_pcnfsd_uid, offset); + offset = dissect_rpc_uint32(tvb, tree, hf_pcnfsd_gid, offset); + gids_count = tvb_get_ntohl(tvb,offset+0); + if (tree) { + gitem = proto_tree_add_text(tree, tvb, + offset, 4+gids_count*4, "Group IDs: %d", gids_count); + gtree = proto_item_add_subtree(gitem, ett_pcnfsd_gids); + } + if (gtree) { + proto_tree_add_item(gtree, hf_pcnfsd_gids_count, tvb, offset, 4, FALSE); + } + offset += 4; + for (gids_i = 0 ; gids_i < gids_count ; gids_i++) { + offset = dissect_rpc_uint32(tvb, gtree, + hf_pcnfsd_gid, offset); + } + offset = dissect_rpc_string(tvb, tree, + hf_pcnfsd_homedir, offset, NULL); + /* should be signed int32 */ + offset = dissect_rpc_uint32(tvb, tree, hf_pcnfsd_def_umask, offset); + offset = dissect_rpc_string(tvb, tree, + hf_pcnfsd_comment, offset, NULL); + + return offset; +} + + +/* "NFS Illustrated", 14.6 */ +/* proc number, "proc name", dissect_request, dissect_reply */ +/* NULL as function pointer means: type of arguments is "void". */ +static const vsff pcnfsd1_proc[] = { + { 0, "NULL", NULL, NULL }, + { 1, "AUTH", NULL, NULL }, + { 2, "PR_INIT", NULL, NULL }, + { 3, "PR_START", NULL, NULL }, + { 0, NULL, NULL, NULL } +}; +static const value_string pcnfsd1_proc_vals[] = { + { 0, "NULL" }, + { 1, "AUTH" }, + { 2, "PR_INIT" }, + { 3, "PR_START" }, + { 0, NULL } +}; +/* end of PCNFS version 1 */ + + +/* "NFS Illustrated", 14.7 */ +static const vsff pcnfsd2_proc[] = { + { 0, "NULL", NULL, NULL }, + { 1, "INFO", NULL, NULL }, + { 2, "PR_INIT", NULL, NULL }, + { 3, "PR_START", NULL, NULL }, + { 4, "PR_LIST", NULL, NULL }, + { 5, "PR_QUEUE", NULL, NULL }, + { 6, "PR_STATUS", NULL, NULL }, + { 7, "PR_CANCEL", NULL, NULL }, + { 8, "PR_ADMIN", NULL, NULL }, + { 9, "PR_REQUEUE", NULL, NULL }, + { 10, "PR_HOLD", NULL, NULL }, + { 11, "PR_RELEASE", NULL, NULL }, + { 12, "MAPID", + dissect_pcnfsd2_mapid_call, dissect_pcnfsd2_mapid_reply }, + { 13, "AUTH", + dissect_pcnfsd2_auth_call, dissect_pcnfsd2_auth_reply }, + { 14, "ALERT", NULL, NULL }, + { 0, NULL, NULL, NULL } +}; +static const value_string pcnfsd2_proc_vals[] = { + { 0, "NULL" }, + { 1, "INFO" }, + { 2, "PR_INIT" }, + { 3, "PR_START" }, + { 4, "PR_LIST" }, + { 5, "PR_QUEUE" }, + { 6, "PR_STATUS" }, + { 7, "PR_CANCEL" }, + { 8, "PR_ADMIN" }, + { 9, "PR_REQUEUE" }, + { 10, "PR_HOLD" }, + { 11, "PR_RELEASE" }, + { 12, "MAPID" }, + { 13, "AUTH" }, + { 14, "ALERT" }, + { 0, NULL } +}; +/* end of PCNFS version 2 */ + + +void +proto_register_pcnfsd(void) +{ + static hf_register_info hf[] = { + { &hf_pcnfsd_procedure_v1, { + "V1 Procedure", "pcnfsd.procedure_v1", FT_UINT32, BASE_DEC, + VALS(pcnfsd1_proc_vals), 0, "V1 Procedure", HFILL }}, + { &hf_pcnfsd_procedure_v2, { + "V2 Procedure", "pcnfsd.procedure_v2", FT_UINT32, BASE_DEC, + VALS(pcnfsd2_proc_vals), 0, "V2 Procedure", HFILL }}, + { &hf_pcnfsd_auth_client, { + "Authentication Client", "pcnfsd.auth.client", FT_STRING, BASE_DEC, + NULL, 0, "Authentication Client", HFILL }}, + { &hf_pcnfsd_auth_ident_obscure, { + "Obscure Ident", "pcnfsd.auth.ident.obscure", FT_STRING, BASE_DEC, + NULL, 0, "Athentication Obscure Ident", HFILL }}, + { &hf_pcnfsd_auth_ident_clear, { + "Clear Ident", "pcnfsd.auth.ident.clear", FT_STRING, BASE_DEC, + NULL, 0, "Authentication Clear Ident", HFILL }}, + { &hf_pcnfsd_auth_password_obscure, { + "Obscure Password", "pcnfsd.auth.password.obscure", FT_STRING, BASE_DEC, + NULL, 0, "Athentication Obscure Password", HFILL }}, + { &hf_pcnfsd_auth_password_clear, { + "Clear Password", "pcnfsd.auth.password.clear", FT_STRING, BASE_DEC, + NULL, 0, "Authentication Clear Password", HFILL }}, + { &hf_pcnfsd_comment, { + "Comment", "pcnfsd.comment", FT_STRING, BASE_DEC, + NULL, 0, "Comment", HFILL }}, + { &hf_pcnfsd_status, { + "Reply Status", "pcnfsd.status", FT_UINT32, BASE_DEC, + NULL, 0, "Status", HFILL }}, + { &hf_pcnfsd_uid, { + "User ID", "pcnfsd.uid", FT_UINT32, BASE_DEC, + NULL, 0, "User ID", HFILL }}, + { &hf_pcnfsd_gid, { + "Group ID", "pcnfsd.gid", FT_UINT32, BASE_DEC, + NULL, 0, "Group ID", HFILL }}, + { &hf_pcnfsd_gids_count, { + "Group ID Count", "pcnfsd.gids.count", FT_UINT32, BASE_DEC, + NULL, 0, "Group ID Count", HFILL }}, + { &hf_pcnfsd_homedir, { + "Home Directory", "pcnfsd.homedir", FT_STRING, BASE_DEC, + NULL, 0, "Home Directory", HFILL }}, + { &hf_pcnfsd_def_umask, { + "def_umask", "pcnfsd.def_umask", FT_INT32, BASE_OCT, + NULL, 0, "def_umask", HFILL }}, + { &hf_pcnfsd_username, { + "User name", "pcnfsd.username", FT_STRING, BASE_DEC, + NULL, 0, "pcnfsd.username", HFILL }}, + }; + + static gint *ett[] = { + &ett_pcnfsd, + &ett_pcnfsd_auth_ident, + &ett_pcnfsd_auth_password, + &ett_pcnfsd_gids + }; + + proto_pcnfsd = proto_register_protocol("PC NFS", + "PCNFSD", "pcnfsd"); + proto_register_field_array(proto_pcnfsd, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); +} + +void +proto_reg_handoff_pcnfsd(void) +{ + /* Register the protocol as RPC */ + rpc_init_prog(proto_pcnfsd, PCNFSD_PROGRAM, ett_pcnfsd); + /* Register the procedure tables */ + rpc_init_proc_table(PCNFSD_PROGRAM, 1, pcnfsd1_proc, hf_pcnfsd_procedure_v1); + rpc_init_proc_table(PCNFSD_PROGRAM, 2, pcnfsd2_proc, hf_pcnfsd_procedure_v2); +} + |