C++ (Cpp) dissect_decrypt_kink_encrypt Exemples

Exemple #1

Fichier : packet-kink.c Projet : RazZziel/wireshark-dplay

static void
dissect_payload_kink_encrypt(packet_info *pinfo, tvbuff_t *tvb, int offset, proto_tree *tree){
  proto_tree *payload_kink_encrypt_tree;
  proto_item *ti;
  guint8 next_payload;
  guint8 reserved;
  guint payload_length;
  gint encrypt_length;
  guint8 inner_next_pload;
  guint32 reserved2;
  guint16 inner_payload_length;
  int start_payload_offset = 0;    /* Keep the begining of the payload offset */

  payload_length = tvb_get_ntohs(tvb,offset + TO_PAYLOAD_LENGTH);
  start_payload_offset = offset;

  encrypt_length = payload_length - FROM_NP_TO_PL;

  /* Make the subtree */
  ti = proto_tree_add_text(tree, tvb, offset, payload_length,"KINK_ENCRYPT");
  payload_kink_encrypt_tree = proto_item_add_subtree(ti, ett_payload_kink_encrypt);

  next_payload = tvb_get_guint8(tvb, offset);
  proto_tree_add_uint(payload_kink_encrypt_tree, hf_kink_next_payload, tvb, offset, 1, next_payload);
  offset ++;

  reserved = tvb_get_guint8(tvb, offset);
  proto_tree_add_text(payload_kink_encrypt_tree, tvb, offset, 1, "RESERVED: %u", reserved);
  offset ++;

  if(payload_length <= PAYLOAD_HEADER){
    proto_tree_add_text(payload_kink_encrypt_tree, tvb, offset, 2, "This Payload Length is too small.: %u", payload_length);
  }
  else{
    proto_tree_add_text(payload_kink_encrypt_tree, tvb, offset, 2, "Payload Length: %u", payload_length);
  }
  offset += 2;

  /* decrypt kink encrypt */

  if(keytype != 0){
#ifdef HAVE_KERBEROS
    tvbuff_t *next_tvb;
    guint8 *plaintext=NULL;

    next_tvb=tvb_new_subset(tvb, offset, MIN(tvb_length_remaining(tvb, offset), encrypt_length), encrypt_length);
    plaintext=decrypt_krb5_data(tree, pinfo, 0, next_tvb, keytype, NULL);    
    if(plaintext){
      next_tvb=tvb_new_child_real_data(tvb, plaintext, encrypt_length, encrypt_length);
      add_new_data_source(pinfo, next_tvb, "decrypted kink encrypt");
      dissect_decrypt_kink_encrypt(pinfo, next_tvb, tree, encrypt_length);
    }
#endif
  }
  else{
    inner_next_pload = tvb_get_guint8(tvb, offset);
    proto_tree_add_text(payload_kink_encrypt_tree, tvb, offset, 1, "InnerNextPload: %u", inner_next_pload);
    offset += 1;
    
    reserved2 = 65536*tvb_get_guint8(tvb, offset) + 256*tvb_get_guint8(tvb, offset+1) + tvb_get_guint8(tvb, offset+2);
    proto_tree_add_text(payload_kink_encrypt_tree, tvb, offset, 3, "RESERVED: %u", reserved2);
    offset += 3;
  
    if(payload_length > PAYLOAD_HEADER){
      inner_payload_length = payload_length - PAYLOAD_HEADER;
      proto_tree_add_text(payload_kink_encrypt_tree, tvb, offset, inner_payload_length, "Payload");
      offset += inner_payload_length;
    }
  }
  /* This part consider the padding. Payload_length don't contain the padding. */
  if(payload_length % PADDING !=0){
    payload_length += (PADDING - (payload_length % PADDING));
  }
  offset = start_payload_offset + payload_length;

  if(payload_length > 0) {
    control_payload(pinfo, tvb, offset, next_payload, tree);  /* Recur control_payload() */
  }
}

Exemple #2

Fichier : packet-kink.c Projet : SayCV/wireshark

static void
dissect_payload_kink_encrypt(packet_info *pinfo, tvbuff_t *tvb, int offset, proto_tree *tree){
  proto_tree *payload_kink_encrypt_tree;
  proto_item *ti;
  guint8 next_payload;
  guint payload_length;
#ifdef HAVE_KERBEROS
  gint encrypt_length;
#endif
  guint8 inner_next_pload;
  guint16 inner_payload_length;
  int start_payload_offset = 0;    /* Keep the beginning of the payload offset */

  payload_length = tvb_get_ntohs(tvb,offset + TO_PAYLOAD_LENGTH);
  start_payload_offset = offset;

#ifdef HAVE_KERBEROS
  encrypt_length = payload_length - FROM_NP_TO_PL;
#endif
  /* Make the subtree */
  ti = proto_tree_add_text(tree, tvb, offset, payload_length,"KINK_ENCRYPT");
  payload_kink_encrypt_tree = proto_item_add_subtree(ti, ett_payload_kink_encrypt);

  next_payload = tvb_get_guint8(tvb, offset);
  proto_tree_add_uint(payload_kink_encrypt_tree, hf_kink_next_payload, tvb, offset, 1, next_payload);
  offset ++;

  proto_tree_add_item(payload_kink_encrypt_tree, hf_kink_reserved8, tvb, offset, 1, ENC_BIG_ENDIAN);
  offset ++;

  ti = proto_tree_add_uint(payload_kink_encrypt_tree, hf_kink_payload_length, tvb, offset, 2, payload_length);
  if(payload_length <= PAYLOAD_HEADER){
    expert_add_info_format(pinfo, ti, PI_PROTOCOL, PI_WARN, "This Payload Length is too small");
  }
  offset += 2;

  /* decrypt kink encrypt */

  if(keytype != 0){
#ifdef HAVE_KERBEROS
    tvbuff_t *next_tvb;
    guint8 *plaintext=NULL;

    next_tvb=tvb_new_subset(tvb, offset, MIN(tvb_length_remaining(tvb, offset), encrypt_length), encrypt_length);
    plaintext=decrypt_krb5_data(tree, pinfo, 0, next_tvb, keytype, NULL);
    if(plaintext){
      next_tvb=tvb_new_child_real_data(tvb, plaintext, encrypt_length, encrypt_length);
      tvb_set_free_cb(next_tvb, g_free);
      add_new_data_source(pinfo, next_tvb, "decrypted kink encrypt");
      dissect_decrypt_kink_encrypt(pinfo, next_tvb, tree, encrypt_length);
    }
#endif
  }
  else{
    inner_next_pload = tvb_get_guint8(tvb, offset);
    proto_tree_add_uint(payload_kink_encrypt_tree, hf_kink_inner_next_pload, tvb, offset, 1, inner_next_pload);
    offset += 1;

    proto_tree_add_item(payload_kink_encrypt_tree, hf_kink_reserved24, tvb, offset, 3, ENC_BIG_ENDIAN);
    offset += 3;

    if(payload_length > PAYLOAD_HEADER){
      inner_payload_length = payload_length - PAYLOAD_HEADER;
      proto_tree_add_text(payload_kink_encrypt_tree, tvb, offset, inner_payload_length, "Payload");
      offset += inner_payload_length;
    }
  }
  /* This part consider the padding. Payload_length don't contain the padding. */
  if(payload_length % PADDING !=0){
    payload_length += (PADDING - (payload_length % PADDING));
  }
  offset = start_payload_offset + payload_length;

  if(payload_length > 0) {
    control_payload(pinfo, tvb, offset, next_payload, tree);  /* Recur control_payload() */
  }
}