epan/dissectors/packet-app-pkix-cert.c

   1 /* packet-app-pkix-cert.c
   2  *
   3  * Routines for application/pkix-cert media dissection
   4  * Copyright 2004, Yaniv Kaul.
   5  *
   6  * Refer to the AUTHORS file or the AUTHORS section in the man page
   7  * for contacting the author(s) of this file.
   8  *
   9  * Wireshark - Network traffic analyzer
  10  * By Gerald Combs <gerald@wireshark.org>
  11  * Copyright 1998 Gerald Combs
  12  *
  13  * SPDX-License-Identifier: GPL-2.0-or-later
  14  */
  15
  16
  17 #include "config.h"
  18
  19 #include <epan/packet.h>
  20 #include <epan/asn1.h>
  21 #include "packet-x509af.h"
  22
  23
  24 void proto_register_cert(void);
  25 void proto_reg_handoff_cert(void);
  26
  27 static dissector_handle_t cert_handle;
  28
  29 /* Initialize the protocol and registered fields */
  30 static int proto_cert;
  31
  32 static int hf_cert;
  33
  34 /* Initialize the subtree pointers */
  35 static int ett_cert;
  36
  37
  38 static int
  39 dissect_cert(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
  40 {
  41         proto_tree *subtree = NULL;
  42         proto_item *ti;
  43         asn1_ctx_t asn1_ctx;
  44         asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, true, pinfo);
  45
  46         col_append_sep_str(pinfo->cinfo, COL_INFO, " ", "(application/pkix-cert)");
  47
  48         if (tree) {
  49                 ti = proto_tree_add_item(tree, proto_cert, tvb, 0, -1, ENC_NA);
  50                 subtree = proto_item_add_subtree(ti, ett_cert);
  51         }
  52
  53         dissect_x509af_Certificate(false, tvb, 0, &asn1_ctx, subtree, hf_cert);
  54         return tvb_captured_length(tvb);
  55 }
  56
  57
  58 /****************** Register the protocol with Wireshark ******************/
  59
  60
  61 /* This format is required because a script is used to build the C function
  62  * that calls the protocol registration. */
  63
  64 void
  65 proto_register_cert(void)
  66 {
  67         /*
  68          * Setup list of header fields.
  69          */
  70         static hf_register_info hf[] = {
  71                 { &hf_cert,
  72                 { "Certificate", "pkix-cert.cert", FT_NONE, BASE_NONE, NULL, 0x00, NULL, HFILL}},
  73         };
  74
  75         /* Setup protocol subtree array */
  76         static int *ett[] = {
  77                 &ett_cert,
  78         };
  79
  80         /* Register the protocol name and description */
  81         proto_cert = proto_register_protocol("PKIX CERT File Format", "PKIX Certificate", "pkix-cert");
  82
  83         /* Required function calls to register the header fields
  84          * and subtrees used */
  85         proto_register_field_array(proto_cert, hf, array_length(hf));
  86         proto_register_subtree_array(ett, array_length(ett));
  87
  88         cert_handle = register_dissector("pkix-cert", dissect_cert, proto_cert);
  89 }
  90
  91
  92 void
  93 proto_reg_handoff_cert(void)
  94 {
  95         /* Register the PKIX-CERT media type */
  96         dissector_add_string("media_type", "application/pkix-cert", cert_handle);
  97 }
  98
  99 /*
 100  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 101  *
 102  * Local variables:
 103  * c-basic-offset: 8
 104  * tab-width: 8
 105  * indent-tabs-mode: nil
 106  * End:
 107  *
 108  * vi: set shiftwidth=8 tabstop=8 expandtab:
 109  * :indentSize=8:tabSize=8:noTabs=true:
 110  */