/* Do not modify this file. Changes will be overwritten.                      */

/* Generated automatically by the ASN.1 to Wireshark dissector compiler       */

/* packet-pkcs10.c                                                            */

/* asn2wrs.py -b -q -L -p pkcs10 -c ./pkcs10.cnf -s ./packet-pkcs10-template -D . -O ../.. PKCS10.asn */

/* packet-pkcs10.c

 *

 * Routines for PKCS10 packet dissection

 *   Martin Peylo <wireshark@izac.de> 2018

 *

 * Wireshark - Network traffic analyzer

 * By Gerald Combs <gerald@wireshark.org>

 * Copyright 1998 Gerald Combs

 *

 * SPDX-License-Identifier: GPL-2.0-or-later

 */

#include "config.h"

#include <epan/packet.h>

#include <wsutil/array.h>

#include <epan/oids.h>

#include <epan/asn1.h>

#include "packet-ber.h"

#include "packet-pkcs10.h"

#include "packet-pkix1explicit.h"

#include "packet-pkix1implicit.h"

#include <epan/prefs.h>

void proto_reg_handoff_pkcs10(void);

void proto_register_pkcs10(void);

static dissector_handle_t csr_handle;

static dissector_handle_t cri_handle;

/* Initialize the protocol and registered fields */

static int proto_pkcs10;

static int hf_pkcs10_CertificationRequestInfo_PDU;  /* CertificationRequestInfo */

static int hf_pkcs10_Attributes_PDU;              /* Attributes */

static int hf_pkcs10_CertificationRequest_PDU;    /* CertificationRequest */

static int hf_pkcs10_version;                     /* T_version */

static int hf_pkcs10_subject;                     /* Name */

static int hf_pkcs10_subjectPKInfo;               /* SubjectPublicKeyInfo */

static int hf_pkcs10_attributes;                  /* Attributes */

static int hf_pkcs10_Attributes_item;             /* Attribute */

static int hf_pkcs10_type;                        /* T_type */

static int hf_pkcs10_values;                      /* T_values */

static int hf_pkcs10_values_item;                 /* T_values_item */

static int hf_pkcs10_certificationRequestInfo;    /* CertificationRequestInfo */

static int hf_pkcs10_signatureAlgorithm;          /* AlgorithmIdentifier */

static int hf_pkcs10_signature;                   /* BIT_STRING */

/* Initialize the subtree pointers */

static int ett_pkcs10_CertificationRequestInfo;

static int ett_pkcs10_Attributes;

static int ett_pkcs10_Attribute;

static int ett_pkcs10_T_values;

static int ett_pkcs10_CertificationRequest;

static const value_string pkcs10_T_version_vals[] = {

  {   0, "v1" },

  { 0, NULL }

};

static unsigned

dissect_pkcs10_T_version(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {

  offset = dissect_ber_constrained_integer(implicit_tag, actx, tree, tvb, offset,

                                                            0U, 0U, hf_index, NULL);

  return offset;

}

static unsigned

dissect_pkcs10_T_type(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {

  offset = dissect_ber_object_identifier_str(implicit_tag, actx, tree, tvb, offset, hf_pkcs10_type, &actx->external.direct_reference);

  return offset;

}

static unsigned

dissect_pkcs10_T_values_item(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {

    offset=call_ber_oid_callback(actx->external.direct_reference, tvb, offset, actx->pinfo, tree, NULL);

  return offset;

}

static const ber_sequence_t T_values_set_of[1] = {

  { &hf_pkcs10_values_item  , BER_CLASS_ANY, 0, BER_FLAGS_NOOWNTAG, dissect_pkcs10_T_values_item },

};

static unsigned

dissect_pkcs10_T_values(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {

  offset = dissect_ber_constrained_set_of(implicit_tag, actx, tree, tvb, offset,

                                             1, NO_BOUND, T_values_set_of, hf_index, ett_pkcs10_T_values);

  return offset;

}

static const ber_sequence_t Attribute_sequence[] = {

  { &hf_pkcs10_type         , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_pkcs10_T_type },

  { &hf_pkcs10_values       , BER_CLASS_UNI, BER_UNI_TAG_SET, BER_FLAGS_NOOWNTAG, dissect_pkcs10_T_values },

  { NULL, 0, 0, 0, NULL }

};

static unsigned

dissect_pkcs10_Attribute(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {

  offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,

                                   Attribute_sequence, hf_index, ett_pkcs10_Attribute);

  return offset;

}

static const ber_sequence_t Attributes_set_of[1] = {

  { &hf_pkcs10_Attributes_item, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_pkcs10_Attribute },

};

static unsigned

dissect_pkcs10_Attributes(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {

  offset = dissect_ber_set_of(implicit_tag, actx, tree, tvb, offset,

                                 Attributes_set_of, hf_index, ett_pkcs10_Attributes);

  return offset;

}

static const ber_sequence_t CertificationRequestInfo_sequence[] = {

  { &hf_pkcs10_version      , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_pkcs10_T_version },

  { &hf_pkcs10_subject      , BER_CLASS_ANY, -1, BER_FLAGS_NOOWNTAG, dissect_pkix1explicit_Name },

  { &hf_pkcs10_subjectPKInfo, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_pkix1explicit_SubjectPublicKeyInfo },

  { &hf_pkcs10_attributes   , BER_CLASS_CON, 0, BER_FLAGS_IMPLTAG, dissect_pkcs10_Attributes },

  { NULL, 0, 0, 0, NULL }

};

unsigned

dissect_pkcs10_CertificationRequestInfo(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {

  offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,

                                   CertificationRequestInfo_sequence, hf_index, ett_pkcs10_CertificationRequestInfo);

  return offset;

}

static unsigned

dissect_pkcs10_BIT_STRING(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {

  offset = dissect_ber_bitstring(implicit_tag, actx, tree, tvb, offset,

                                    NULL, 0, hf_index, -1,

                                    NULL);

  return offset;

}

static const ber_sequence_t CertificationRequest_sequence[] = {

  { &hf_pkcs10_certificationRequestInfo, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_pkcs10_CertificationRequestInfo },

  { &hf_pkcs10_signatureAlgorithm, BER_CLASS_UNI, BER_UNI_TAG_SEQUENCE, BER_FLAGS_NOOWNTAG, dissect_pkix1explicit_AlgorithmIdentifier },

  { &hf_pkcs10_signature    , BER_CLASS_UNI, BER_UNI_TAG_BITSTRING, BER_FLAGS_NOOWNTAG, dissect_pkcs10_BIT_STRING },

  { NULL, 0, 0, 0, NULL }

};

unsigned

dissect_pkcs10_CertificationRequest(bool implicit_tag _U_, tvbuff_t *tvb _U_, unsigned offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) {

  offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset,

                                   CertificationRequest_sequence, hf_index, ett_pkcs10_CertificationRequest);

  return offset;

}

/*--- PDUs ---*/

static int dissect_CertificationRequestInfo_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) {

  unsigned offset = 0;

  asn1_ctx_t asn1_ctx;

  asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true, pinfo);

  offset = dissect_pkcs10_CertificationRequestInfo(false, tvb, offset, &asn1_ctx, tree, hf_pkcs10_CertificationRequestInfo_PDU);

  return offset;

}

static int dissect_Attributes_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) {

  unsigned offset = 0;

  asn1_ctx_t asn1_ctx;

  asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true, pinfo);

  offset = dissect_pkcs10_Attributes(false, tvb, offset, &asn1_ctx, tree, hf_pkcs10_Attributes_PDU);

  return offset;

}

static int dissect_CertificationRequest_PDU(tvbuff_t *tvb _U_, packet_info *pinfo _U_, proto_tree *tree _U_, void *data _U_) {

  unsigned offset = 0;

  asn1_ctx_t asn1_ctx;

  asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true, pinfo);

  offset = dissect_pkcs10_CertificationRequest(false, tvb, offset, &asn1_ctx, tree, hf_pkcs10_CertificationRequest_PDU);

  return offset;

}

/*--- proto_register_pkcs10 ----------------------------------------------*/

void proto_register_pkcs10(void) {

  /* List of fields */

  static hf_register_info hf[] = {

    { &hf_pkcs10_CertificationRequestInfo_PDU,

      { "CertificationRequestInfo", "pkcs10.CertificationRequestInfo_element",

        FT_NONE, BASE_NONE, NULL, 0,

        NULL, HFILL }},

    { &hf_pkcs10_Attributes_PDU,

      { "Attributes", "pkcs10.Attributes",

        FT_UINT32, BASE_DEC, NULL, 0,

        NULL, HFILL }},

    { &hf_pkcs10_CertificationRequest_PDU,

      { "CertificationRequest", "pkcs10.CertificationRequest_element",

        FT_NONE, BASE_NONE, NULL, 0,

        NULL, HFILL }},

    { &hf_pkcs10_version,

      { "version", "pkcs10.version",

        FT_UINT32, BASE_DEC, VALS(pkcs10_T_version_vals), 0,

        NULL, HFILL }},

    { &hf_pkcs10_subject,

      { "subject", "pkcs10.subject",

        FT_UINT32, BASE_DEC, NULL, 0,

        "Name", HFILL }},

    { &hf_pkcs10_subjectPKInfo,

      { "subjectPKInfo", "pkcs10.subjectPKInfo_element",

        FT_NONE, BASE_NONE, NULL, 0,

        "SubjectPublicKeyInfo", HFILL }},

    { &hf_pkcs10_attributes,

      { "attributes", "pkcs10.attributes",

        FT_UINT32, BASE_DEC, NULL, 0,

        NULL, HFILL }},

    { &hf_pkcs10_Attributes_item,

      { "Attribute", "pkcs10.Attribute_element",

        FT_NONE, BASE_NONE, NULL, 0,

        NULL, HFILL }},

    { &hf_pkcs10_type,

      { "type", "pkcs10.type",

        FT_OID, BASE_NONE, NULL, 0,

        NULL, HFILL }},

    { &hf_pkcs10_values,

      { "values", "pkcs10.values",

        FT_UINT32, BASE_DEC, NULL, 0,

        NULL, HFILL }},

    { &hf_pkcs10_values_item,

      { "values item", "pkcs10.values_item_element",

        FT_NONE, BASE_NONE, NULL, 0,

        NULL, HFILL }},

    { &hf_pkcs10_certificationRequestInfo,

      { "certificationRequestInfo", "pkcs10.certificationRequestInfo_element",

        FT_NONE, BASE_NONE, NULL, 0,

        NULL, HFILL }},

    { &hf_pkcs10_signatureAlgorithm,

      { "signatureAlgorithm", "pkcs10.signatureAlgorithm_element",

        FT_NONE, BASE_NONE, NULL, 0,

        "AlgorithmIdentifier", HFILL }},

    { &hf_pkcs10_signature,

      { "signature", "pkcs10.signature",

        FT_BYTES, BASE_NONE, NULL, 0,

        "BIT_STRING", HFILL }},

  };

  /* List of subtrees */

  static int *ett[] = {

    &ett_pkcs10_CertificationRequestInfo,

    &ett_pkcs10_Attributes,

    &ett_pkcs10_Attribute,

    &ett_pkcs10_T_values,

    &ett_pkcs10_CertificationRequest,

  };

  /* Register protocol */

  proto_pkcs10 = proto_register_protocol("PKCS10 Certification Request", "PKCS10", "pkcs10");

  /* Register fields and subtrees */

  proto_register_field_array(proto_pkcs10, hf, array_length(hf));

  proto_register_subtree_array(ett, array_length(ett));

  csr_handle = register_dissector("pkcs10", dissect_CertificationRequest_PDU, proto_pkcs10);

  cri_handle = register_dissector("pkcs10.cri", dissect_CertificationRequestInfo_PDU, proto_pkcs10);

  register_ber_syntax_dissector("CertificationRequest", proto_pkcs10, dissect_CertificationRequest_PDU);

  register_ber_syntax_dissector("CertificationRequestInfo", proto_pkcs10, dissect_CertificationRequestInfo_PDU);

  register_ber_oid_syntax(".p10", NULL, "CertificationRequest");

  register_ber_oid_syntax(".csr", NULL, "CertificationRequest");

}

/*--- proto_reg_handoff_pkcs10 -------------------------------------------*/

void proto_reg_handoff_pkcs10(void) {

  register_ber_oid_dissector("1.2.840.113549.1.9.9", dissect_Attributes_PDU, proto_pkcs10, "pkcs-9-at-extendedCertificateAttributes");

  dissector_add_string("media_type", "application/pkcs10", csr_handle); /* RFC 5967 */

  dissector_add_string("rfc7468.preeb_label", "CERTIFICATE REQUEST", csr_handle); /* RFC 7468 */

  dissector_add_string("rfc7468.preeb_label", "NEW CERTIFICATE REQUEST", csr_handle); /* RFC 7468 Appendix A. Non-conforming example*/

}