diff options
Diffstat (limited to 'epan/dissectors/packet-nfsacl.c')
| -rw-r--r-- | epan/dissectors/packet-nfsacl.c | 638 |
1 files changed, 638 insertions, 0 deletions
diff --git a/epan/dissectors/packet-nfsacl.c b/epan/dissectors/packet-nfsacl.c new file mode 100644 index 0000000000..5999ec45d2 --- /dev/null +++ b/epan/dissectors/packet-nfsacl.c @@ -0,0 +1,638 @@ +/* packet-nfsacl.c + * Stubs for Sun's NFS ACL RPC service (runs on port 2049, and is presumably + * handled by the same kernel server code that handles NFS) + * + * Guy Harris <guy@alum.mit.edu> + * + * $Id$ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * Copyright 1998 Gerald Combs + * + * 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 "packet-rpc.h" +#include "packet-nfs.h" + +static int proto_nfsacl = -1; +static int hf_nfsacl_procedure_v1 = -1; +static int hf_nfsacl_procedure_v2 = -1; +static int hf_nfsacl_procedure_v3 = -1; +static int hf_nfsacl_entry = -1; +static int hf_nfsacl_aclcnt = -1; +static int hf_nfsacl_dfaclcnt = -1; +static int hf_nfsacl2_status = -1; +static int hf_nfsacl3_status = -1; +static int hf_nfsacl_aclent = -1; +static int hf_nfsacl_aclent_type = -1; +static int hf_nfsacl_aclent_uid = -1; +static int hf_nfsacl_aclent_perm = -1; +static int hf_nfsacl_create = -1; + +static gint ett_nfsacl = -1; +static gint ett_nfsacl_mask = -1; +static gint ett_nfsacl_entry = -1; +static gint ett_nfsacl_aclent = -1; +static gint ett_nfsacl_aclent_perm = -1; +static gint ett_nfsacl_aclent_entries = -1; + +#define NFSACL_PROGRAM 100227 + +#define NFSACLPROC_NULL 0 + +#define NFSACLPROC2_GETACL 1 +#define NFSACLPROC2_SETACL 2 +#define NFSACLPROC2_GETATTR 3 +#define NFSACLPROC2_ACCESS 4 +#define NFSACLPROC2_GETXATTRDIR 5 + +#define NFSACLPROC3_GETACL 1 +#define NFSACLPROC3_SETACL 2 +#define NFSACLPROC3_GETXATTRDIR 3 + +#define ACL2_OK 0 +#define ACL3_OK 0 + +static int +dissect_nfsacl_mask(tvbuff_t *tvb, int offset, proto_tree *tree, + char *name) +{ + guint32 mask; + proto_item *mask_item = NULL; + proto_tree *mask_tree = NULL; + + mask = tvb_get_ntohl(tvb, offset + 0); + + if (tree) + { + mask_item = proto_tree_add_text(tree, tvb, offset, 4, "%s: 0x%02x", + name, mask); + + if (mask_item) + mask_tree = proto_item_add_subtree(mask_item, ett_nfsacl_mask); + } + + if (mask_tree) + { + proto_tree_add_text(mask_tree, tvb, offset, 4, "%s", + decode_boolean_bitfield(mask, 0x01, 8, "ACL entry", + "(no ACL entry)")); + proto_tree_add_text(mask_tree, tvb, offset, 4, "%s", + decode_boolean_bitfield(mask, 0x02, 8, "ACL count", + "(no ACL count)")); + proto_tree_add_text(mask_tree, tvb, offset, 4, "%s", + decode_boolean_bitfield(mask, 0x04, 8, "default ACL entry", + "(no default ACL entry)")); + proto_tree_add_text(mask_tree, tvb, offset, 4, "%s", + decode_boolean_bitfield(mask, 0x08, 8, "default ACL count", + "(no default ACL count)")); + } + + offset += 4; + return offset; +} + +#define NA_READ 0x4 +#define NA_WRITE 0x2 +#define NA_EXEC 0x1 + +static const value_string names_nfsacl_aclent_type[] = { +#define NA_USER_OBJ 0x1 + { NA_USER_OBJ, "NA_USER_OBJ" }, +#define NA_USER 0x2 + { NA_USER, "NA_USER" }, +#define NA_GROUP_OBJ 0x4 + { NA_GROUP_OBJ, "NA_GROUP_OBJ" }, +#define NA_GROUP 0x8 + { NA_GROUP, "NA_GROUP" }, +#define NA_CLASS_OBJ 0x10 + { NA_CLASS_OBJ, "NA_CLASS_OBJ" }, +#define NA_OTHER_OBJ 0x20 + { NA_OTHER_OBJ, "NA_OTHER_OBJ" }, +#define NA_ACL_DEFAULT 0x1000 + { NA_ACL_DEFAULT, "NA_ACL_DEFAULT" }, + { NA_ACL_DEFAULT | NA_USER_OBJ, "Default NA_USER_OBJ" }, + { NA_ACL_DEFAULT | NA_USER, "Default NA_USER" }, + { NA_ACL_DEFAULT | NA_GROUP_OBJ, "Default NA_GROUP_OBJ" }, + { NA_ACL_DEFAULT | NA_GROUP, "Default NA_GROUP" }, + { NA_ACL_DEFAULT | NA_CLASS_OBJ, "Default NA_CLASS_OBJ" }, + { NA_ACL_DEFAULT | NA_OTHER_OBJ, "Default NA_OTHER_OBJ" }, + { 0, NULL }, +}; + +static int +dissect_nfsacl_aclent(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree* tree) +{ + proto_item *entry_item = NULL; + proto_tree *entry_tree = NULL; + guint32 perm; + proto_item *perm_item = NULL; + proto_tree *perm_tree = NULL; + + if (tree) + { + entry_item = proto_tree_add_item(tree, hf_nfsacl_aclent, tvb, + offset + 0, -1, FALSE); + entry_tree = proto_item_add_subtree(entry_item, ett_nfsacl_aclent); + } + + offset = dissect_rpc_uint32(tvb, entry_tree, hf_nfsacl_aclent_type, offset); + offset = dissect_rpc_uint32(tvb, entry_tree, hf_nfsacl_aclent_uid, offset); + + perm = tvb_get_ntohl(tvb, offset); + + perm_item = proto_tree_add_uint(entry_tree, hf_nfsacl_aclent_perm, + tvb, offset, 4, perm); + + if (perm_item) + perm_tree = proto_item_add_subtree(perm_item, ett_nfsacl_aclent_perm); + + if (perm_tree) + { + proto_tree_add_text(perm_tree, tvb, offset, 4, "%s", + decode_boolean_bitfield(perm, NA_READ, 4, "READ", "no READ")); + + proto_tree_add_text(perm_tree, tvb, offset, 4, "%s", + decode_boolean_bitfield(perm, NA_WRITE, 4, "WRITE", "no WRITE")); + + proto_tree_add_text(perm_tree, tvb, offset, 4, "%s", + decode_boolean_bitfield(perm, NA_EXEC, 4, "EXEC", "no EXEC")); + } + + offset += 4; + + return offset; +} + + +static int +dissect_nfsacl_secattr(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + guint32 aclcnt, dfaclcnt; + guint32 i; + proto_item *entry_item = NULL; + proto_tree *entry_tree = NULL; + + offset = dissect_nfsacl_mask(tvb, offset, tree, "mask"); + offset = dissect_rpc_uint32(tvb, tree, hf_nfsacl_aclcnt, offset); + + aclcnt = tvb_get_ntohl(tvb, offset); + + entry_item = proto_tree_add_text(tree, tvb, offset, 4, + "Total ACL entries: %d", aclcnt); + + if (entry_item) + entry_tree = proto_item_add_subtree(entry_item, + ett_nfsacl_aclent_entries); + + offset += 4; + + if (aclcnt > 0) + { + for (i = 0; i < aclcnt; i++) + offset = dissect_nfsacl_aclent(tvb, offset, pinfo, entry_tree); + } + + /* */ + + offset = dissect_rpc_uint32(tvb, tree, hf_nfsacl_dfaclcnt, offset); + + dfaclcnt = tvb_get_ntohl(tvb, offset); + + entry_item = proto_tree_add_text(tree, tvb, offset, 4, + "Total default ACL entries: %d", dfaclcnt); + + if (entry_item) + entry_tree = proto_item_add_subtree(entry_item, + ett_nfsacl_aclent_entries); + + offset += 4; + + if (dfaclcnt > 0) + { + for (i = 0; i < dfaclcnt; i++) + offset = dissect_nfsacl_aclent(tvb, offset, pinfo, entry_tree); + } + + return offset; +} + +/* proc number, "proc name", dissect_request, dissect_reply */ +/* NULL as function pointer means: type of arguments is "void". */ +static const vsff nfsacl1_proc[] = { + { NFSACLPROC_NULL, "NULL", + NULL, NULL }, + { 0, NULL, NULL, NULL } +}; +static const value_string nfsacl1_proc_vals[] = { + { NFSACLPROC_NULL, "NULL" }, + { 0, NULL } +}; + +static int +dissect_nfsacl2_getacl_call(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + offset = dissect_fhandle(tvb, offset, pinfo, tree, "fhandle", NULL); + offset = dissect_nfsacl_mask(tvb, offset, tree, "mask"); + return offset; +} + +static int +dissect_nfsacl2_getacl_reply(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + guint32 status; + + status = tvb_get_ntohl(tvb, offset + 0); + + proto_tree_add_uint(tree, hf_nfsacl2_status, tvb, offset + 0, 4, status); + + offset += 4; + + if (status == ACL2_OK) + { + offset = dissect_fattr(tvb, offset, tree, "attr"); + offset = dissect_nfsacl_secattr(tvb, offset, pinfo, tree); + } + + return offset; +} + +static int +dissect_nfsacl2_setacl_call(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + offset = dissect_fhandle(tvb, offset, pinfo, tree, "fhandle", NULL); + offset = dissect_nfsacl_secattr(tvb, offset, pinfo, tree); + + return offset; +} + +static int +dissect_nfsacl2_setacl_reply(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + guint32 status; + + status = tvb_get_ntohl(tvb, offset + 0); + + proto_tree_add_uint(tree, hf_nfsacl2_status, tvb, offset + 0, 4, status); + + offset += 4; + + if (status == ACL2_OK) + offset = dissect_fattr(tvb, offset, tree, "attr"); + + return offset; +} + +static int +dissect_nfsacl2_getattr_call(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + offset = dissect_fhandle(tvb, offset, pinfo, tree, "fhandle", NULL); + + return offset; +} + +static int +dissect_nfsacl2_getattr_reply(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + offset = dissect_fattr(tvb, offset, tree, "attr"); + + return offset; +} + +static int +dissect_nfsacl2_access_call(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + offset = dissect_fhandle(tvb, offset, pinfo, tree, "fhandle", NULL); + offset = dissect_access(tvb, offset, tree, "access"); + + return offset; +} + +static int +dissect_nfsacl2_access_reply(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + guint32 status; + + status = tvb_get_ntohl(tvb, offset + 0); + + proto_tree_add_uint(tree, hf_nfsacl2_status, tvb, offset + 0, 4, status); + + offset += 4; + + if (status == ACL2_OK) + { + offset = dissect_fattr(tvb, offset, tree, "attr"); + offset = dissect_access(tvb, offset, tree, "access"); + } + + return offset; +} + +static int +dissect_nfsacl2_getxattrdir_call(tvbuff_t *tvb, int offset, + packet_info *pinfo _U_, proto_tree *tree) +{ + offset = dissect_fhandle(tvb, offset, pinfo, tree, "fhandle", NULL); + offset = dissect_rpc_bool(tvb, tree, hf_nfsacl_create, offset); + + return offset; +} + +static int +dissect_nfsacl2_getxattrdir_reply(tvbuff_t *tvb, int offset, + packet_info *pinfo _U_, proto_tree *tree) +{ + guint32 status; + + status = tvb_get_ntohl(tvb, offset + 0); + + proto_tree_add_uint(tree, hf_nfsacl2_status, tvb, offset + 0, 4, status); + + offset += 4; + + if (status == ACL2_OK) + { + offset = dissect_fhandle(tvb, offset, pinfo, tree, "fhandle", NULL); + offset = dissect_fattr(tvb, offset, tree, "attr"); + } + + return offset; +} + +static const vsff nfsacl2_proc[] = { + { NFSACLPROC_NULL, "NULL", + NULL, NULL }, + { NFSACLPROC2_GETACL, "GETACL", + dissect_nfsacl2_getacl_call, dissect_nfsacl2_getacl_reply }, + { NFSACLPROC2_SETACL, "SETACL", + dissect_nfsacl2_setacl_call, dissect_nfsacl2_setacl_reply }, + { NFSACLPROC2_GETATTR, "GETATTR", + dissect_nfsacl2_getattr_call, dissect_nfsacl2_getattr_reply }, + { NFSACLPROC2_ACCESS, "ACCESS", + dissect_nfsacl2_access_call, dissect_nfsacl2_access_reply }, + { NFSACLPROC2_GETXATTRDIR, "GETXATTRDIR", + dissect_nfsacl2_getxattrdir_call, dissect_nfsacl2_getxattrdir_reply }, + { 0, NULL, NULL, NULL } +}; +static const value_string nfsacl2_proc_vals[] = { + { NFSACLPROC_NULL, "NULL" }, + { NFSACLPROC2_GETACL, "GETACL" }, + { NFSACLPROC2_SETACL, "SETACL" }, + { NFSACLPROC2_GETATTR, "GETATTR" }, + { NFSACLPROC2_ACCESS, "ACCESS" }, + { NFSACLPROC2_GETXATTRDIR, "GETXATTRDIR" }, + { 0, NULL } +}; + +static int +dissect_nfsacl3_getacl_call(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + offset = dissect_nfs_fh3(tvb, offset, pinfo, tree, "fhandle", NULL); + offset = dissect_nfsacl_mask(tvb, offset, tree, "mask"); + + return offset; +} + +static int +dissect_nfsacl3_getacl_reply(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + guint32 status; + proto_item *entry_item = NULL; + proto_tree *entry_tree = NULL; + + status = tvb_get_ntohl(tvb, offset + 0); + + if (tree) + proto_tree_add_uint(tree, hf_nfsacl3_status, tvb, offset + 0, 4, + status); + + offset += 4; + + if (tree) + { + entry_item = proto_tree_add_item(tree, hf_nfsacl_entry, tvb, + offset + 0, -1, FALSE); + if (entry_item) + entry_tree = proto_item_add_subtree(entry_item, ett_nfsacl_entry); + } + + if (entry_tree) + offset = dissect_nfs_post_op_attr(tvb, offset, entry_tree, "attr"); + + if (status != ACL3_OK) + return offset; + + if (entry_tree) + offset = dissect_nfsacl_secattr(tvb, offset, pinfo, entry_tree); + + return offset; +} + +static int +dissect_nfsacl3_setacl_call(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) + +{ + proto_item *acl_item = NULL; + proto_tree *acl_tree = NULL; + + offset = dissect_nfs_fh3(tvb, offset, pinfo, tree, "fhandle", NULL); + + if (tree) + { + acl_item = proto_tree_add_item(tree, hf_nfsacl_entry, tvb, offset + 0, + -1, FALSE); + + if (acl_item) + acl_tree = proto_item_add_subtree(acl_item, ett_nfsacl_entry); + } + + if (acl_tree) + offset = dissect_nfsacl_secattr(tvb, offset, pinfo, acl_tree); + + return offset; +} + +static int +dissect_nfsacl3_setacl_reply(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, + proto_tree *tree) +{ + guint32 status = tvb_get_ntohl(tvb, offset + 0); + + if (tree) + proto_tree_add_uint(tree, hf_nfsacl3_status, tvb, offset + 0, 4, + status); + + offset += 4; + + offset = dissect_nfs_post_op_attr(tvb, offset, tree, "attr"); + + return offset; +} + +static int +dissect_nfsacl3_getxattrdir_call(tvbuff_t *tvb, int offset, + packet_info *pinfo _U_, proto_tree *tree) + +{ + offset = dissect_nfs_fh3(tvb, offset, pinfo, tree, "fhandle", NULL); + offset = dissect_rpc_bool(tvb, tree, hf_nfsacl_create, offset); + + return offset; +} + +static int +dissect_nfsacl3_getxattrdir_reply(tvbuff_t *tvb, int offset, + packet_info *pinfo _U_, proto_tree *tree) +{ + guint32 status; + + status = tvb_get_ntohl(tvb, offset + 0); + + if (tree) + proto_tree_add_uint(tree, hf_nfsacl3_status, tvb, offset + 0, 4, + status); + + offset += 4; + + if (status == ACL3_OK) + { + offset = dissect_nfs_fh3(tvb, offset, pinfo, tree, "fhandle", NULL); + offset = dissect_nfs_post_op_attr(tvb, offset, tree, "attr"); + } + + return offset; +} + +static const vsff nfsacl3_proc[] = { + { NFSACLPROC_NULL, "NULL", + NULL, NULL }, + { NFSACLPROC3_GETACL, "GETACL", + dissect_nfsacl3_getacl_call, dissect_nfsacl3_getacl_reply }, + { NFSACLPROC3_SETACL, "SETACL", + dissect_nfsacl3_setacl_call, dissect_nfsacl3_setacl_reply }, + { NFSACLPROC3_GETXATTRDIR, "GETXATTRDIR", + dissect_nfsacl3_getxattrdir_call, dissect_nfsacl3_getxattrdir_reply }, + { 0, NULL, NULL, NULL } +}; +static const value_string nfsacl3_proc_vals[] = { + { NFSACLPROC_NULL, "NULL" }, + { NFSACLPROC3_GETACL, "GETACL" }, + { NFSACLPROC3_SETACL, "SETACL" }, + { 0, NULL } +}; + +static const value_string names_nfsacl2_status[] = { + { ACL2_OK, "ACL2_OK" }, + { 0, NULL } +}; + +static const value_string names_nfsacl3_status[] = { + { ACL3_OK, "ACL3_OK" }, + { 0, NULL } +}; + +static struct true_false_string yesno = { "Yes", "No" }; + +void +proto_register_nfsacl(void) +{ + static hf_register_info hf[] = { + { &hf_nfsacl_procedure_v1, { + "V1 Procedure", "nfsacl.procedure_v1", FT_UINT32, BASE_DEC, + VALS(nfsacl1_proc_vals), 0, "V1 Procedure", HFILL }}, + { &hf_nfsacl_procedure_v2, { + "V2 Procedure", "nfsacl.procedure_v2", FT_UINT32, BASE_DEC, + VALS(nfsacl2_proc_vals), 0, "V2 Procedure", HFILL }}, + { &hf_nfsacl_procedure_v3, { + "V3 Procedure", "nfsacl.procedure_v3", FT_UINT32, BASE_DEC, + VALS(nfsacl3_proc_vals), 0, "V3 Procedure", HFILL }}, + /* generic */ + { &hf_nfsacl_entry, { + "ACL", "nfsacl.acl", FT_NONE, 0, + NULL, 0, "ACL", HFILL }}, + { &hf_nfsacl_aclcnt, { + "ACL count", "nfsacl.aclcnt", FT_UINT32, BASE_DEC, + NULL, 0, "ACL count", HFILL }}, + { &hf_nfsacl_dfaclcnt, { + "Default ACL count", "nfsacl.dfaclcnt", FT_UINT32, BASE_DEC, + NULL, 0, "Default ACL count", HFILL }}, + { &hf_nfsacl_aclent, { + "ACL Entry", "nfsacl.aclent", FT_NONE, 0, + NULL, 0, "ACL", HFILL }}, + { &hf_nfsacl_aclent_type, { + "Type", "nfsacl.aclent.type", FT_UINT32, BASE_DEC, + VALS(names_nfsacl_aclent_type), 0, "Type", HFILL }}, + { &hf_nfsacl_aclent_uid, { + "UID", "nfsacl.aclent.uid", FT_UINT32, BASE_DEC, + NULL, 0, "UID", HFILL }}, + { &hf_nfsacl_aclent_perm, { + "Permissions", "nfsacl.aclent.perm", FT_UINT32, BASE_DEC, + NULL, 0, "Permissions", HFILL }}, + /* V2 */ + { &hf_nfsacl2_status, { + "Status", "nfsacl.status2", FT_UINT32, BASE_DEC, + VALS(names_nfsacl2_status), 0, "Status", HFILL }}, + /* V3 */ + { &hf_nfsacl3_status, { + "Status", "nfsacl.status3", FT_UINT32, BASE_DEC, + VALS(names_nfsacl3_status), 0, "Status", HFILL }}, + { &hf_nfsacl_create, { + "create", "nfsacl.create", FT_BOOLEAN, BASE_NONE, + &yesno, 0, "Create?", HFILL }}, + }; + + static gint *ett[] = { + &ett_nfsacl, + &ett_nfsacl_mask, + &ett_nfsacl_entry, + &ett_nfsacl_aclent, + &ett_nfsacl_aclent_perm, + &ett_nfsacl_aclent_entries + }; + + proto_nfsacl = proto_register_protocol("NFSACL", "NFSACL", "nfsacl"); + proto_register_field_array(proto_nfsacl, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); +} + +void +proto_reg_handoff_nfsacl(void) +{ + /* Register the protocol as RPC */ + rpc_init_prog(proto_nfsacl, NFSACL_PROGRAM, ett_nfsacl); + /* Register the procedure tables */ + rpc_init_proc_table(NFSACL_PROGRAM, 1, nfsacl1_proc, hf_nfsacl_procedure_v1); + rpc_init_proc_table(NFSACL_PROGRAM, 2, nfsacl2_proc, hf_nfsacl_procedure_v2); + rpc_init_proc_table(NFSACL_PROGRAM, 3, nfsacl3_proc, hf_nfsacl_procedure_v3); +} |