forked from osmocom/wireshark
15a0a63156
Change-Id: Ifea45514bdba8be5f62b9dc560027077297f631e Reviewed-on: https://code.wireshark.org/review/2456 Reviewed-by: Evan Huus <eapache@gmail.com>
208 lines
6.2 KiB
C
208 lines
6.2 KiB
C
/* packet-ess.c
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* Routines for RFC 2634 and RFC 5035 Extended Security Services packet
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* dissection
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* Ronnie Sahlberg 2004
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* Stig Bjorlykke 2010
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <glib.h>
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#include <string.h>
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#include <epan/packet.h>
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#include <epan/asn1.h>
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#include <epan/prefs.h>
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#include <epan/uat.h>
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#include "packet-ber.h"
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#include "packet-ess.h"
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#include "packet-cms.h"
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#include "packet-x509ce.h"
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#include "packet-x509af.h"
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#define PNAME "Extended Security Services"
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#define PSNAME "ESS"
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#define PFNAME "ess"
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void proto_register_ess(void);
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void proto_reg_handoff_ess(void);
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typedef struct _ess_category_attributes_t {
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char *oid;
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guint lacv;
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char *name;
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} ess_category_attributes_t;
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static ess_category_attributes_t *ess_category_attributes;
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static guint num_ess_category_attributes;
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/* Initialize the protocol and registered fields */
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static int proto_ess = -1;
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static int hf_ess_SecurityCategory_type_OID = -1;
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static int hf_ess_Category_attribute = -1;
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static gint ett_Category_attributes = -1;
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#include "packet-ess-hf.c"
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#include "packet-ess-val.h"
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/* Initialize the subtree pointers */
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#include "packet-ess-ett.c"
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static const char *object_identifier_id;
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UAT_CSTRING_CB_DEF(ess_category_attributes, oid, ess_category_attributes_t)
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UAT_DEC_CB_DEF(ess_category_attributes, lacv, ess_category_attributes_t)
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UAT_CSTRING_CB_DEF(ess_category_attributes, name, ess_category_attributes_t)
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static void *
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ess_copy_cb(void *dest, const void *orig, size_t len _U_)
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{
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ess_category_attributes_t *u = (ess_category_attributes_t *)dest;
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const ess_category_attributes_t *o = (const ess_category_attributes_t *)orig;
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u->oid = g_strdup(o->oid);
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u->lacv = o->lacv;
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u->name = g_strdup(o->name);
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return dest;
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}
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static void
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ess_free_cb(void *r)
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{
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ess_category_attributes_t *u = (ess_category_attributes_t *)r;
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g_free(u->oid);
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g_free(u->name);
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}
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static void
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ess_dissect_attribute (guint32 value, asn1_ctx_t *actx)
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{
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guint i;
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for (i = 0; i < num_ess_category_attributes; i++) {
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ess_category_attributes_t *u = &(ess_category_attributes[i]);
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if ((strcmp (u->oid, object_identifier_id) == 0) &&
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(u->lacv == value))
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{
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proto_item_append_text (actx->created_item, " (%s)", u->name);
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break;
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}
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}
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}
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static void
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ess_dissect_attribute_flags (tvbuff_t *tvb, asn1_ctx_t *actx)
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{
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proto_tree *tree;
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guint8 *value;
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guint i;
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tree = proto_item_add_subtree (actx->created_item, ett_Category_attributes);
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value = (guint8 *)tvb_memdup (wmem_packet_scope(), tvb, 0, tvb_captured_length (tvb));
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for (i = 0; i < num_ess_category_attributes; i++) {
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ess_category_attributes_t *u = &(ess_category_attributes[i]);
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if ((strcmp (u->oid, object_identifier_id) == 0) &&
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((u->lacv / 8) < tvb_captured_length (tvb)) &&
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(value[u->lacv / 8] & (1 << (7 - (u->lacv % 8)))))
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{
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proto_tree_add_string_format (tree, hf_ess_Category_attribute, tvb,
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u->lacv / 8, 1, u->name,
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"%s (%d)", u->name, u->lacv);
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}
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}
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}
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#include "packet-ess-fn.c"
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/*--- proto_register_ess ----------------------------------------------*/
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void proto_register_ess(void) {
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/* List of fields */
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static hf_register_info hf[] = {
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{ &hf_ess_SecurityCategory_type_OID,
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{ "type", "ess.type_OID", FT_STRING, BASE_NONE, NULL, 0,
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"Type of Security Category", HFILL }},
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{ &hf_ess_Category_attribute,
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{ "Attribute", "ess.attribute", FT_STRING, BASE_NONE, NULL, 0,
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NULL, HFILL }},
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#include "packet-ess-hfarr.c"
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};
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/* List of subtrees */
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static gint *ett[] = {
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&ett_Category_attributes,
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#include "packet-ess-ettarr.c"
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};
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static uat_field_t attributes_flds[] = {
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UAT_FLD_CSTRING(ess_category_attributes,oid, "Tag Set", "Category Tag Set (Object Identifier)"),
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UAT_FLD_DEC(ess_category_attributes,lacv, "Value", "Label And Cert Value"),
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UAT_FLD_CSTRING(ess_category_attributes,name, "Name", "Category Name"),
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UAT_END_FIELDS
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};
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uat_t *attributes_uat = uat_new("ESS Category Attributes",
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sizeof(ess_category_attributes_t),
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"ess_category_attributes",
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TRUE,
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&ess_category_attributes,
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&num_ess_category_attributes,
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UAT_AFFECTS_DISSECTION, /* affects dissection of packets, but not set of named fields */
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"ChEssCategoryAttributes",
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ess_copy_cb,
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NULL,
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ess_free_cb,
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NULL,
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attributes_flds);
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static module_t *ess_module;
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/* Register protocol */
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proto_ess = proto_register_protocol(PNAME, PSNAME, PFNAME);
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/* Register fields and subtrees */
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proto_register_field_array(proto_ess, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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ess_module = prefs_register_protocol(proto_ess, NULL);
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prefs_register_uat_preference(ess_module, "attributes_table",
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"ESS Category Attributes",
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"ESS category attributes translation table",
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attributes_uat);
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}
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/*--- proto_reg_handoff_ess -------------------------------------------*/
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void proto_reg_handoff_ess(void) {
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#include "packet-ess-dis-tab.c"
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}
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