diff options
author | João Valverde <joao.valverde@tecnico.ulisboa.pt> | 2016-03-09 03:17:51 +0000 |
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committer | João Valverde <j@v6e.pt> | 2016-03-13 21:30:24 +0000 |
commit | 54a520d4a1151c68d0b4e5f09a8d82466fa499f3 (patch) | |
tree | 7aacae160382098ce651ac862a5dfd5de4beff94 /epan/dissectors/asn1/p1/packet-p1-template.c | |
parent | c1f3c935bdd33090c87f0d2f84842ce9729b747a (diff) |
Move /asn1 to /epan/dissectors
Change-Id: I1208fe3c2ba428995526f561e8f792b8d871e9a9
Reviewed-on: https://code.wireshark.org/review/14388
Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
Petri-Dish: Pascal Quantin <pascal.quantin@gmail.com>
Reviewed-by: João Valverde <j@v6e.pt>
Diffstat (limited to 'epan/dissectors/asn1/p1/packet-p1-template.c')
-rw-r--r-- | epan/dissectors/asn1/p1/packet-p1-template.c | 473 |
1 files changed, 473 insertions, 0 deletions
diff --git a/epan/dissectors/asn1/p1/packet-p1-template.c b/epan/dissectors/asn1/p1/packet-p1-template.c new file mode 100644 index 0000000000..1d1714fe75 --- /dev/null +++ b/epan/dissectors/asn1/p1/packet-p1-template.c @@ -0,0 +1,473 @@ +/* packet-p1.c + * Routines for X.411 (X.400 Message Transfer) packet dissection + * Graeme Lunt 2005 + * + * 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/prefs.h> +#include <epan/oids.h> +#include <epan/asn1.h> +#include <epan/expert.h> +#include <epan/strutil.h> + +#include "packet-ber.h" +#include "packet-acse.h" +#include "packet-ros.h" +#include "packet-rtse.h" + +#include "packet-x509af.h" +#include "packet-x509ce.h" +#include "packet-x509if.h" +#include "packet-x509sat.h" + +#include "packet-p1.h" + +#define PNAME "X.411 Message Transfer Service" +#define PSNAME "P1" +#define PFNAME "p1" + +static guint global_p1_tcp_port = 102; +static dissector_handle_t tpkt_handle; +static void prefs_register_p1(void); /* forward declaration for use in preferences registration */ + +/* Initialize the protocol and registered fields */ +static int proto_p1 = -1; +static int proto_p3 = -1; + +static int hf_p1_MTS_APDU_PDU = -1; +static int hf_p1_MTABindArgument_PDU = -1; +static int hf_p1_MTABindResult_PDU = -1; +static int hf_p1_MTABindError_PDU = -1; + +#include "packet-p1-hf.c" + +/* Initialize the subtree pointers */ +static gint ett_p1 = -1; +static gint ett_p3 = -1; +static gint ett_p1_content_unknown = -1; +static gint ett_p1_bilateral_information = -1; +static gint ett_p1_additional_information = -1; +static gint ett_p1_unknown_standard_extension = -1; +static gint ett_p1_unknown_extension_attribute_type = -1; +static gint ett_p1_unknown_tokendata_type = -1; +#include "packet-p1-ett.c" + +static expert_field ei_p1_unknown_extension_attribute_type = EI_INIT; +static expert_field ei_p1_unknown_standard_extension = EI_INIT; +static expert_field ei_p1_unknown_built_in_content_type = EI_INIT; +static expert_field ei_p1_unknown_tokendata_type = EI_INIT; +static expert_field ei_p1_unsupported_pdu = EI_INIT; +static expert_field ei_p1_zero_pdu = EI_INIT; + +/* Dissector tables */ +static dissector_table_t p1_extension_dissector_table; +static dissector_table_t p1_extension_attribute_dissector_table; +static dissector_table_t p1_tokendata_dissector_table; + +#include "packet-p1-table.c" /* operation and error codes */ + +#define P1_ADDRESS_CTX "p1-address-ctx" +typedef struct p1_address_ctx { + gboolean do_address; + const char *content_type_id; + gboolean report_unknown_content_type; + wmem_strbuf_t* oraddress; +} p1_address_ctx_t; + +static void set_do_address(asn1_ctx_t* actx, gboolean do_address) +{ + p1_address_ctx_t* ctx; + + if (actx->subtree.tree_ctx == NULL) { + actx->subtree.tree_ctx = wmem_new0(wmem_packet_scope(), p1_address_ctx_t); + } + + ctx = (p1_address_ctx_t*)actx->subtree.tree_ctx; + ctx->do_address = do_address; +} + +static p1_address_ctx_t *get_do_address_ctx(asn1_ctx_t* actx) +{ + p1_address_ctx_t* ctx = NULL; + + if (actx->pinfo->private_table) { + /* First check if called from an extension attribute */ + ctx = (p1_address_ctx_t *)g_hash_table_lookup(actx->pinfo->private_table, P1_ADDRESS_CTX); + } + + if (!ctx) { + ctx = (p1_address_ctx_t*)actx->subtree.tree_ctx; + } + + return ctx; +} + +static void do_address(const char* addr, tvbuff_t* tvb_string, asn1_ctx_t* actx) +{ + p1_address_ctx_t* ctx = get_do_address_ctx(actx); + + if (ctx && ctx->do_address) { + if (addr) { + wmem_strbuf_append(ctx->oraddress, addr); + } + if (tvb_string) { + wmem_strbuf_append(ctx->oraddress, tvb_format_text(tvb_string, 0, tvb_captured_length(tvb_string))); + } + } +} + +static void do_address_str(const char* addr, tvbuff_t* tvb_string, asn1_ctx_t* actx) +{ + wmem_strbuf_t *ddatype = (wmem_strbuf_t *)actx->value_ptr; + p1_address_ctx_t* ctx = get_do_address_ctx(actx); + + do_address(addr, tvb_string, actx); + + if (ctx && ctx->do_address && ddatype && tvb_string) + wmem_strbuf_append(ddatype, tvb_format_text(tvb_string, 0, tvb_captured_length(tvb_string))); +} + +static void do_address_str_tree(const char* addr, tvbuff_t* tvb_string, asn1_ctx_t* actx, proto_tree* tree) +{ + wmem_strbuf_t *ddatype = (wmem_strbuf_t *)actx->value_ptr; + p1_address_ctx_t* ctx = get_do_address_ctx(actx); + + do_address(addr, tvb_string, actx); + + if (ctx && ctx->do_address && tvb_string && ddatype) { + if (wmem_strbuf_get_len(ddatype) > 0) { + proto_item_append_text (tree, " (%s=%s)", wmem_strbuf_get_str(ddatype), tvb_format_text(tvb_string, 0, tvb_captured_length(tvb_string))); + } + } +} + +#include "packet-p1-fn.c" + +#include "packet-p1-table11.c" /* operation argument/result dissectors */ +#include "packet-p1-table21.c" /* error dissector */ + +static const ros_info_t p3_ros_info = { + "P3", + &proto_p3, + &ett_p3, + p3_opr_code_string_vals, + p3_opr_tab, + p3_err_code_string_vals, + p3_err_tab +}; + +void p1_initialize_content_globals (asn1_ctx_t* actx, proto_tree *tree, gboolean report_unknown_cont_type) +{ + p1_address_ctx_t* ctx; + + if (actx->subtree.tree_ctx == NULL) { + actx->subtree.tree_ctx = wmem_new0(wmem_packet_scope(), p1_address_ctx_t); + } + + ctx = (p1_address_ctx_t*)actx->subtree.tree_ctx; + + actx->subtree.top_tree = tree; + actx->external.direct_reference = NULL; + ctx->content_type_id = NULL; + ctx->report_unknown_content_type = report_unknown_cont_type; +} + +const char* p1_get_last_oraddress (asn1_ctx_t* actx) +{ + p1_address_ctx_t* ctx; + + if ((actx == NULL) || (actx->subtree.tree_ctx == NULL)) + return ""; + + ctx = (p1_address_ctx_t*)actx->subtree.tree_ctx; + if (wmem_strbuf_get_len(ctx->oraddress) <= 0) + return ""; + + return wmem_strbuf_get_str(ctx->oraddress); +} + +/* + * Dissect P1 MTS APDU + */ +int +dissect_p1_mts_apdu (tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data _U_) +{ + proto_item *item=NULL; + proto_tree *tree=NULL; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + + /* save parent_tree so subdissectors can create new top nodes */ + p1_initialize_content_globals (&asn1_ctx, parent_tree, TRUE); + + if (parent_tree) { + item = proto_tree_add_item(parent_tree, proto_p1, tvb, 0, -1, ENC_NA); + tree = proto_item_add_subtree(item, ett_p1); + } + + col_set_str(pinfo->cinfo, COL_PROTOCOL, "P1"); + col_set_str(pinfo->cinfo, COL_INFO, "Transfer"); + + dissect_p1_MTS_APDU (FALSE, tvb, 0, &asn1_ctx, tree, hf_p1_MTS_APDU_PDU); + p1_initialize_content_globals (&asn1_ctx, NULL, FALSE); + return tvb_captured_length(tvb); +} + +/* +* Dissect P1 PDUs inside a PPDU. +*/ +static int +dissect_p1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data) +{ + int offset = 0; + int old_offset; + proto_item *item; + proto_tree *tree; + struct SESSION_DATA_STRUCTURE* session; + int (*p1_dissector)(gboolean implicit_tag _U_, tvbuff_t *tvb, int offset, asn1_ctx_t *actx _U_, proto_tree *tree, int hf_index _U_) = NULL; + const char *p1_op_name; + int hf_p1_index = -1; + asn1_ctx_t asn1_ctx; + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + + /* do we have operation information from the ROS dissector? */ + if (data == NULL) + return 0; + session = (struct SESSION_DATA_STRUCTURE*)data; + + /* save parent_tree so subdissectors can create new top nodes */ + p1_initialize_content_globals (&asn1_ctx, parent_tree, TRUE); + + asn1_ctx.private_data = session; + + item = proto_tree_add_item(parent_tree, proto_p1, tvb, 0, -1, ENC_NA); + tree = proto_item_add_subtree(item, ett_p1); + + col_set_str(pinfo->cinfo, COL_PROTOCOL, "P1"); + col_clear(pinfo->cinfo, COL_INFO); + + switch(session->ros_op & ROS_OP_MASK) { + case (ROS_OP_BIND | ROS_OP_ARGUMENT): /* BindInvoke */ + p1_dissector = dissect_p1_MTABindArgument; + p1_op_name = "Bind-Argument"; + hf_p1_index = hf_p1_MTABindArgument_PDU; + break; + case (ROS_OP_BIND | ROS_OP_RESULT): /* BindResult */ + p1_dissector = dissect_p1_MTABindResult; + p1_op_name = "Bind-Result"; + hf_p1_index = hf_p1_MTABindResult_PDU; + break; + case (ROS_OP_BIND | ROS_OP_ERROR): /* BindError */ + p1_dissector = dissect_p1_MTABindError; + p1_op_name = "Bind-Error"; + hf_p1_index = hf_p1_MTABindError_PDU; + break; + case (ROS_OP_INVOKE | ROS_OP_ARGUMENT): /* Invoke Argument */ + p1_dissector = dissect_p1_MTS_APDU; + p1_op_name = "Transfer"; + hf_p1_index = hf_p1_MTS_APDU_PDU; + break; + default: + proto_tree_add_expert(tree, pinfo, &ei_p1_unsupported_pdu, tvb, offset, -1); + return tvb_captured_length(tvb); + } + + col_set_str(pinfo->cinfo, COL_INFO, p1_op_name); + + while (tvb_reported_length_remaining(tvb, offset) > 0) { + old_offset=offset; + offset=(*p1_dissector)(FALSE, tvb, offset, &asn1_ctx , tree, hf_p1_index); + if (offset == old_offset) { + proto_tree_add_expert(tree, pinfo, &ei_p1_zero_pdu, tvb, offset, -1); + break; + } + } + p1_initialize_content_globals (&asn1_ctx, NULL, FALSE); + return tvb_captured_length(tvb); +} + + + + +/*--- proto_register_p1 -------------------------------------------*/ +void proto_register_p1(void) { + + /* List of fields */ + static hf_register_info hf[] = + { + /* "Created by defining PDU in .cnf */ + { &hf_p1_MTABindArgument_PDU, + { "MTABindArgument", "p1.MTABindArgument", + FT_UINT32, BASE_DEC, VALS(p1_MTABindArgument_vals), 0, + "p1.MTABindArgument", HFILL }}, + { &hf_p1_MTABindResult_PDU, + { "MTABindResult", "p1.MTABindResult", + FT_UINT32, BASE_DEC, VALS(p1_MTABindResult_vals), 0, + "p1.MTABindResult", HFILL }}, + { &hf_p1_MTABindError_PDU, + { "MTABindError", "p1.MTABindError", + FT_UINT32, BASE_DEC, VALS(p1_MTABindError_vals), 0, + "p1.MTABindError", HFILL }}, + { &hf_p1_MTS_APDU_PDU, + { "MTS-APDU", "p1.MTS_APDU", + FT_UINT32, BASE_DEC, VALS(p1_MTS_APDU_vals), 0, + "p1.MTS_APDU", HFILL }}, + +#include "packet-p1-hfarr.c" + }; + + /* List of subtrees */ + static gint *ett[] = { + &ett_p1, + &ett_p3, + &ett_p1_content_unknown, + &ett_p1_bilateral_information, + &ett_p1_additional_information, + &ett_p1_unknown_standard_extension, + &ett_p1_unknown_extension_attribute_type, + &ett_p1_unknown_tokendata_type, +#include "packet-p1-ettarr.c" + }; + + static ei_register_info ei[] = { + { &ei_p1_unknown_extension_attribute_type, { "p1.unknown.extension_attribute_type", PI_UNDECODED, PI_WARN, "Unknown extension-attribute-type", EXPFILL }}, + { &ei_p1_unknown_standard_extension, { "p1.unknown.standard_extension", PI_UNDECODED, PI_WARN, "Unknown standard-extension", EXPFILL }}, + { &ei_p1_unknown_built_in_content_type, { "p1.unknown.built_in_content_type", PI_UNDECODED, PI_WARN, "P1 Unknown Content (unknown built-in content-type)", EXPFILL }}, + { &ei_p1_unknown_tokendata_type, { "p1.unknown.tokendata_type", PI_UNDECODED, PI_WARN, "Unknown tokendata-type", EXPFILL }}, + { &ei_p1_unsupported_pdu, { "p1.unsupported_pdu", PI_UNDECODED, PI_WARN, "Unsupported P1 PDU", EXPFILL }}, + { &ei_p1_zero_pdu, { "p1.zero_pdu", PI_PROTOCOL, PI_ERROR, "Internal error, zero-byte P1 PDU", EXPFILL }}, + }; + + expert_module_t* expert_p1; + module_t *p1_module; + + /* Register protocol */ + proto_p1 = proto_register_protocol(PNAME, PSNAME, PFNAME); + register_dissector("p1", dissect_p1, proto_p1); + + proto_p3 = proto_register_protocol("X.411 Message Access Service", "P3", "p3"); + + /* Register fields and subtrees */ + proto_register_field_array(proto_p1, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + expert_p1 = expert_register_protocol(proto_p1); + expert_register_field_array(expert_p1, ei, array_length(ei)); + + p1_extension_dissector_table = register_dissector_table("p1.extension", "P1-EXTENSION", FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE); + p1_extension_attribute_dissector_table = register_dissector_table("p1.extension-attribute", "P1-EXTENSION-ATTRIBUTE", FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE); + p1_tokendata_dissector_table = register_dissector_table("p1.tokendata", "P1-TOKENDATA", FT_UINT32, BASE_DEC, DISSECTOR_TABLE_ALLOW_DUPLICATE); + + /* Register our configuration options for P1, particularly our port */ + + p1_module = prefs_register_protocol_subtree("OSI/X.400", proto_p1, prefs_register_p1); + + prefs_register_uint_preference(p1_module, "tcp.port", "P1 TCP Port", + "Set the port for P1 operations (if other" + " than the default of 102)", + 10, &global_p1_tcp_port); + + register_ber_syntax_dissector("P1 Message", proto_p1, dissect_p1_mts_apdu); +#include "packet-p1-syn-reg.c" +} + + +/*--- proto_reg_handoff_p1 --- */ +void proto_reg_handoff_p1(void) { + dissector_handle_t p1_handle; + +#include "packet-p1-dis-tab.c" + + /* APPLICATION CONTEXT */ + + oid_add_from_string("id-ac-mts-transfer","2.6.0.1.6"); + + /* ABSTRACT SYNTAXES */ + + p1_handle = find_dissector("p1"); + register_rtse_oid_dissector_handle("2.6.0.2.12", p1_handle, 0, "id-as-mta-rtse", TRUE); + register_rtse_oid_dissector_handle("2.6.0.2.7", p1_handle, 0, "id-as-mtse", FALSE); + + + register_rtse_oid_dissector_handle("applicationProtocol.1", p1_handle, 0, "mts-transfer-protocol-1984", FALSE); + register_rtse_oid_dissector_handle("applicationProtocol.12", p1_handle, 0, "mta-transfer-protocol", FALSE); + + /* the ROS dissector will use the registered P3 ros info */ + register_rtse_oid_dissector_handle(id_as_mts_rtse, NULL, 0, "id-as-mts-rtse", TRUE); + register_rtse_oid_dissector_handle(id_as_msse, NULL, 0, "id-as-msse", TRUE); + + /* remember the tpkt handler for change in preferences */ + tpkt_handle = find_dissector("tpkt"); + + /* APPLICATION CONTEXT */ + + oid_add_from_string("id-ac-mts-access-88", id_ac_mts_access_88); + oid_add_from_string("id-ac-mts-forced-access-88", id_ac_mts_forced_access_88); + oid_add_from_string("id-ac-mts-access-94", id_ac_mts_access_94); + oid_add_from_string("id-ac-mts-forced-access-94", id_ac_mts_forced_access_94); + + + /* Register P3 with ROS */ + + register_ros_protocol_info(id_as_msse, &p3_ros_info, 0, "id-as-msse", FALSE); + + register_ros_protocol_info(id_as_mdse_88, &p3_ros_info, 0, "id-as-mdse-88", FALSE); + register_ros_protocol_info(id_as_mdse_94, &p3_ros_info, 0, "id-as-mdse-94", FALSE); + + register_ros_protocol_info(id_as_mase_88, &p3_ros_info, 0, "id-as-mase-88", FALSE); + register_ros_protocol_info(id_as_mase_94, &p3_ros_info, 0, "id-as-mase-94", FALSE); + + register_ros_protocol_info(id_as_mts, &p3_ros_info, 0, "id-as-mts", FALSE); + register_ros_protocol_info(id_as_mts_rtse, &p3_ros_info, 0, "id-as-mts-rtse", TRUE); + +} + +static void +prefs_register_p1(void) +{ + static guint tcp_port = 0; + + /* de-register the old port */ + /* port 102 is registered by TPKT - don't undo this! */ + if ((tcp_port > 0) && (tcp_port != 102) && tpkt_handle) + dissector_delete_uint("tcp.port", tcp_port, tpkt_handle); + + /* Set our port number for future use */ + tcp_port = global_p1_tcp_port; + + if ((tcp_port > 0) && (tcp_port != 102) && tpkt_handle) + dissector_add_uint("tcp.port", tcp_port, tpkt_handle); + +} + +/* + * Editor modelines - http://www.wireshark.org/tools/modelines.html + * + * Local variables: + * c-basic-offset: 4 + * tab-width: 8 + * indent-tabs-mode: nil + * End: + * + * vi: set shiftwidth=4 tabstop=8 expandtab: + * :indentSize=4:tabSize=8:noTabs=true: + */ |