diff options
Diffstat (limited to 'epan/dissectors/asn1/ess/packet-ess-template.c')
| -rw-r--r-- | epan/dissectors/asn1/ess/packet-ess-template.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/epan/dissectors/asn1/ess/packet-ess-template.c b/epan/dissectors/asn1/ess/packet-ess-template.c new file mode 100644 index 0000000000..b9c20eb7c1 --- /dev/null +++ b/epan/dissectors/asn1/ess/packet-ess-template.c @@ -0,0 +1,204 @@ +/* packet-ess.c + * Routines for RFC 2634 and RFC 5035 Extended Security Services packet + * dissection + * Ronnie Sahlberg 2004 + * Stig Bjorlykke 2010 + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" + +#include <epan/packet.h> +#include <epan/asn1.h> +#include <epan/prefs.h> +#include <epan/uat.h> + +#include "packet-ber.h" +#include "packet-ess.h" +#include "packet-cms.h" +#include "packet-x509ce.h" +#include "packet-x509af.h" + +#define PNAME "Extended Security Services" +#define PSNAME "ESS" +#define PFNAME "ess" + +void proto_register_ess(void); +void proto_reg_handoff_ess(void); + +typedef struct _ess_category_attributes_t { + char *oid; + guint lacv; + char *name; +} ess_category_attributes_t; + +static ess_category_attributes_t *ess_category_attributes; +static guint num_ess_category_attributes; + +/* Initialize the protocol and registered fields */ +static int proto_ess = -1; +static int hf_ess_SecurityCategory_type_OID = -1; +static int hf_ess_Category_attribute = -1; + +static gint ett_Category_attributes = -1; + +#include "packet-ess-hf.c" + +#include "packet-ess-val.h" + +/* Initialize the subtree pointers */ +#include "packet-ess-ett.c" + +static const char *object_identifier_id; + +UAT_CSTRING_CB_DEF(ess_category_attributes, oid, ess_category_attributes_t) +UAT_DEC_CB_DEF(ess_category_attributes, lacv, ess_category_attributes_t) +UAT_CSTRING_CB_DEF(ess_category_attributes, name, ess_category_attributes_t) + +static void * +ess_copy_cb(void *dest, const void *orig, size_t len _U_) +{ + ess_category_attributes_t *u = (ess_category_attributes_t *)dest; + const ess_category_attributes_t *o = (const ess_category_attributes_t *)orig; + + u->oid = g_strdup(o->oid); + u->lacv = o->lacv; + u->name = g_strdup(o->name); + + return dest; +} + +static void +ess_free_cb(void *r) +{ + ess_category_attributes_t *u = (ess_category_attributes_t *)r; + + g_free(u->oid); + g_free(u->name); +} + +static void +ess_dissect_attribute (guint32 value, asn1_ctx_t *actx) +{ + guint i; + + for (i = 0; i < num_ess_category_attributes; i++) { + ess_category_attributes_t *u = &(ess_category_attributes[i]); + + if ((strcmp (u->oid, object_identifier_id) == 0) && + (u->lacv == value)) + { + proto_item_append_text (actx->created_item, " (%s)", u->name); + break; + } + } +} + +static void +ess_dissect_attribute_flags (tvbuff_t *tvb, asn1_ctx_t *actx) +{ + proto_tree *tree; + guint8 *value; + guint i; + + tree = proto_item_add_subtree (actx->created_item, ett_Category_attributes); + value = (guint8 *)tvb_memdup (wmem_packet_scope(), tvb, 0, tvb_captured_length (tvb)); + + for (i = 0; i < num_ess_category_attributes; i++) { + ess_category_attributes_t *u = &(ess_category_attributes[i]); + + if ((strcmp (u->oid, object_identifier_id) == 0) && + ((u->lacv / 8) < tvb_captured_length (tvb)) && + (value[u->lacv / 8] & (1U << (7 - (u->lacv % 8))))) + { + proto_tree_add_string_format (tree, hf_ess_Category_attribute, tvb, + u->lacv / 8, 1, u->name, + "%s (%d)", u->name, u->lacv); + } + } +} + +#include "packet-ess-fn.c" + +/*--- proto_register_ess ----------------------------------------------*/ +void proto_register_ess(void) { + + /* List of fields */ + static hf_register_info hf[] = { + { &hf_ess_SecurityCategory_type_OID, + { "type", "ess.type_OID", FT_STRING, BASE_NONE, NULL, 0, + "Type of Security Category", HFILL }}, + { &hf_ess_Category_attribute, + { "Attribute", "ess.attribute", FT_STRING, BASE_NONE, NULL, 0, + NULL, HFILL }}, +#include "packet-ess-hfarr.c" + }; + + /* List of subtrees */ + static gint *ett[] = { + &ett_Category_attributes, +#include "packet-ess-ettarr.c" + }; + + static uat_field_t attributes_flds[] = { + UAT_FLD_CSTRING(ess_category_attributes,oid, "Tag Set", "Category Tag Set (Object Identifier)"), + UAT_FLD_DEC(ess_category_attributes,lacv, "Value", "Label And Cert Value"), + UAT_FLD_CSTRING(ess_category_attributes,name, "Name", "Category Name"), + UAT_END_FIELDS + }; + + uat_t *attributes_uat = uat_new("ESS Category Attributes", + sizeof(ess_category_attributes_t), + "ess_category_attributes", + TRUE, + &ess_category_attributes, + &num_ess_category_attributes, + UAT_AFFECTS_DISSECTION, /* affects dissection of packets, but not set of named fields */ + "ChEssCategoryAttributes", + ess_copy_cb, + NULL, + ess_free_cb, + NULL, + attributes_flds); + + static module_t *ess_module; + + /* Register protocol */ + proto_ess = proto_register_protocol(PNAME, PSNAME, PFNAME); + + /* Register fields and subtrees */ + proto_register_field_array(proto_ess, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + ess_module = prefs_register_protocol(proto_ess, NULL); + + prefs_register_uat_preference(ess_module, "attributes_table", + "ESS Category Attributes", + "ESS category attributes translation table", + attributes_uat); + +} + + +/*--- proto_reg_handoff_ess -------------------------------------------*/ +void proto_reg_handoff_ess(void) { +#include "packet-ess-dis-tab.c" +} + |