/* packet-sctp.c
* Routines for Stream Control Transmission Protocol dissection
- * Copyright 2000, Michael Tüxen <Michael.Tuexen@icn.siemens.de>
+ * It should be compilant to
+ * - RFC 2960, for basic SCTP support
+ * - http://www.ietf.org/internet-drafts/draft-ietf-tsvwg-addip-sctp-06.txt for the add-IP extension
+ * - http://www.ietf.org/internet-drafts/draft-stewart-tsvwg-prsctp-01.txt for the 'Partial Reliability' extension
+ * - http://www.ietf.org/internet-drafts/draft-ietf-tsvwg-sctpcsum-07.txt
+ * Copyright 2000, 2001, 2002, Michael Tuexen <Michael.Tuexen@icn.siemens.de>
+ * Still to do (so stay tuned)
+ * - support for reassembly
+ * - code cleanup
*
- * $Id: packet-sctp.c,v 1.20 2001/08/28 08:28:14 guy Exp $
+ * $Id: packet-sctp.c,v 1.40 2002/07/10 21:01:57 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
# include "config.h"
#endif
-#include <stdio.h>
-#include <stdlib.h>
-
-
-#ifdef HAVE_SYS_TYPES_H
-# include <sys/types.h>
-#endif
-
-#ifdef HAVE_NETINET_IN_H
-# include <netinet/in.h>
-#endif
-
-#include <string.h>
-#include <glib.h>
-
-#ifdef NEED_SNPRINTF_H
-# include "snprintf.h"
-#endif
-
-#include "packet.h"
+#include "prefs.h"
+#include <epan/packet.h>
#include "ipproto.h"
/* Initialize the protocol and registered fields */
static int proto_sctp = -1;
+static int hf_sctp_port = -1;
static int hf_sctp_source_port = -1;
static int hf_sctp_destination_port = -1;
static int hf_sctp_verification_tag = -1;
static int hf_sctp_checksum = -1;
+static int hf_sctp_checksum_bad = -1;
static int hf_sctp_chunk_type = -1;
static int hf_sctp_chunk_flags = -1;
static int hf_sctp_cause_tsn = -1;
+static int hf_sctp_forward_tsn_chunk_tsn = -1;
+static int hf_sctp_forward_tsn_chunk_sid = -1;
+static int hf_sctp_forward_tsn_chunk_ssn = -1;
+
+static int hf_sctp_asconf_ack_serial = -1;
+static int hf_sctp_asconf_serial = -1;
+static int hf_sctp_correlation_id = -1;
+
+static int hf_sctp_adap_indication = -1;
+static int hf_sctp_abort_chunk_t_bit = -1;
static dissector_table_t sctp_port_dissector_table;
static dissector_table_t sctp_ppi_dissector_table;
+static module_t *sctp_module;
+
/* Initialize the subtree pointers */
static gint ett_sctp = -1;
static gint ett_sctp_chunk = -1;
static gint ett_sctp_chunk_parameter = -1;
static gint ett_sctp_chunk_cause = -1;
static gint ett_sctp_data_chunk_flags = -1;
+static gint ett_sctp_shutdown_complete_chunk_flags = -1;
+static gint ett_sctp_abort_chunk_flags = -1;
static gint ett_sctp_sack_chunk_gap_block = -1;
static gint ett_sctp_supported_address_types_parameter = -1;
static gint ett_sctp_unrecognized_parameter_parameter = -1;
+static dissector_handle_t data_handle;
+
#define SCTP_DATA_CHUNK_ID 0
#define SCTP_INIT_CHUNK_ID 1
#define SCTP_INIT_ACK_CHUNK_ID 2
#define SCTP_ECNE_CHUNK_ID 12
#define SCTP_CWR_CHUNK_ID 13
#define SCTP_SHUTDOWN_COMPLETE_CHUNK_ID 14
+#define SCTP_FORWARD_TSN_CHUNK_ID 192
+#define SCTP_ASCONF_ACK_CHUNK_ID 0x80
+#define SCTP_ASCONF_CHUNK_ID 0XC1
+
#define SCTP_IETF_EXT 255
static const value_string sctp_chunk_type_values[] = {
{ SCTP_ECNE_CHUNK_ID, "ECNE" },
{ SCTP_CWR_CHUNK_ID, "CWR" },
{ SCTP_SHUTDOWN_COMPLETE_CHUNK_ID, "SHUTDOWN_COMPLETE" },
+ { SCTP_FORWARD_TSN_CHUNK_ID, "FORWARD TSN" },
+ { SCTP_ASCONF_ACK_CHUNK_ID, "ASCONF_ACK" },
+ { SCTP_ASCONF_CHUNK_ID, "ASCONF" },
{ SCTP_IETF_EXT, "IETF_EXTENSION" },
{ 0, NULL } };
#define HOSTNAME_ADDRESS_PARAMETER_ID 0x000b
#define SUPPORTED_ADDRESS_TYPES_PARAMETER_ID 0x000c
#define ECN_PARAMETER_ID 0x8000
+#define FORWARD_TSN_SUPPORTED_PARAMETER_ID 0xC000
+#define ADD_IP_ADDRESS_PARAMETER_ID 0xC001
+#define DEL_IP_ADDRESS_PARAMETER_ID 0xC002
+#define ERROR_CAUSE_INDICATION_PARAMETER_ID 0xC003
+#define SET_PRIMARY_ADDRESS_PARAMETER_ID 0xC004
+#define SUCCESS_REPORT_PARAMETER_ID 0xC005
+#define ADAP_LAYER_INDICATION_PARAMETER_ID 0xC006
static const value_string sctp_parameter_identifier_values[] = {
{ HEARTBEAT_INFO_PARAMETER_ID, "Heartbeat info" },
{ HOSTNAME_ADDRESS_PARAMETER_ID, "Hostname address" },
{ SUPPORTED_ADDRESS_TYPES_PARAMETER_ID, "Supported address types" },
{ ECN_PARAMETER_ID, "ECN" },
+ { FORWARD_TSN_SUPPORTED_PARAMETER_ID, "Forward TSN supported" },
+ { ADD_IP_ADDRESS_PARAMETER_ID, "Add IP address" },
+ { DEL_IP_ADDRESS_PARAMETER_ID, "Delete IP address" },
+ { ERROR_CAUSE_INDICATION_PARAMETER_ID, "Error cause indication" },
+ { SET_PRIMARY_ADDRESS_PARAMETER_ID, "Set primary address" },
+ { SUCCESS_REPORT_PARAMETER_ID, "Success report" },
+ { ADAP_LAYER_INDICATION_PARAMETER_ID, "Adaptation Layer Indication" },
{ 0, NULL } };
#define PARAMETER_TYPE_LENGTH 2
#define CAUSE_TSN_LENGTH 4
#define CAUSE_TSN_OFFSET CAUSE_INFO_OFFSET
-#define INVALID_STREAM_IDENTIFIER 0x01
-#define MISSING_MANDATORY_PARAMETERS 0x02
-#define STALE_COOKIE_ERROR 0x03
-#define OUT_OF_RESOURCE 0x04
-#define UNRESOLVABLE_ADDRESS 0x05
-#define UNRECOGNIZED_CHUNK_TYPE 0x06
-#define INVALID_MANDATORY_PARAMETER 0x07
-#define UNRECOGNIZED_PARAMETERS 0x08
-#define NO_USER_DATA 0x09
-#define COOKIE_RECEIVED_WHILE_SHUTTING_DOWN 0x0a
+#define INVALID_STREAM_IDENTIFIER 0x01
+#define MISSING_MANDATORY_PARAMETERS 0x02
+#define STALE_COOKIE_ERROR 0x03
+#define OUT_OF_RESOURCE 0x04
+#define UNRESOLVABLE_ADDRESS 0x05
+#define UNRECOGNIZED_CHUNK_TYPE 0x06
+#define INVALID_MANDATORY_PARAMETER 0x07
+#define UNRECOGNIZED_PARAMETERS 0x08
+#define NO_USER_DATA 0x09
+#define COOKIE_RECEIVED_WHILE_SHUTTING_DOWN 0x0a
+#define RESTART_WITH_NEW_ADDRESSES 0x0b
+#define REQUEST_TO_DELETE_LAST_ADDRESS 0x0100
+#define OPERATION_REFUSED_DUE_TO_RESOURCE_SHORTAGE 0X0101
+#define REQUEST_TO_DELETE_SOURCE_ADDRESS 0x0102
+#define ABORT_DUE_TO_ILLEGAL_ASCONF 0x0103
static const value_string sctp_cause_code_values[] = {
- { INVALID_STREAM_IDENTIFIER, "Invalid stream identifier" },
- { MISSING_MANDATORY_PARAMETERS, "Missing mandator parameter" },
- { STALE_COOKIE_ERROR, "Stale cookie error" },
- { OUT_OF_RESOURCE, "Out of resource" },
- { UNRESOLVABLE_ADDRESS, "Unresolvable address" },
- { UNRECOGNIZED_CHUNK_TYPE, "Unrecognized chunk type " },
- { INVALID_MANDATORY_PARAMETER, "Invalid mandatory parameter" },
- { UNRECOGNIZED_PARAMETERS, "Unrecognized parameters" },
- { NO_USER_DATA, "No user data" },
- { COOKIE_RECEIVED_WHILE_SHUTTING_DOWN, "Cookie received while shutting down" },
- { 0, NULL } };
+ { INVALID_STREAM_IDENTIFIER, "Invalid stream identifier" },
+ { MISSING_MANDATORY_PARAMETERS, "Missing mandator parameter" },
+ { STALE_COOKIE_ERROR, "Stale cookie error" },
+ { OUT_OF_RESOURCE, "Out of resource" },
+ { UNRESOLVABLE_ADDRESS, "Unresolvable address" },
+ { UNRECOGNIZED_CHUNK_TYPE, "Unrecognized chunk type " },
+ { INVALID_MANDATORY_PARAMETER, "Invalid mandatory parameter" },
+ { UNRECOGNIZED_PARAMETERS, "Unrecognized parameters" },
+ { NO_USER_DATA, "No user data" },
+ { COOKIE_RECEIVED_WHILE_SHUTTING_DOWN, "Cookie received while shutting down" },
+ { RESTART_WITH_NEW_ADDRESSES, "Restart of an association with new addresses" },
+ { REQUEST_TO_DELETE_LAST_ADDRESS, "Request to delete last address" },
+ { OPERATION_REFUSED_DUE_TO_RESOURCE_SHORTAGE, "Operation refused due to resource shortage" },
+ { REQUEST_TO_DELETE_SOURCE_ADDRESS, "Request to delete source address" },
+ { ABORT_DUE_TO_ILLEGAL_ASCONF, "Association Aborted due to illegal ASCONF-ACK" },
+ { 0, NULL } };
#define NOT_SPECIFIED_PROTOCOL_ID 0
#define IUA_PAYLOAD_PROTOCOL_ID 1
"TCB destroyed"
};
+#define SCTP_CHECKSUM_NONE 0
+#define SCTP_CHECKSUM_ADLER32 1
+#define SCTP_CHECKSUM_CRC32C 2
+#define SCTP_CHECKSUM_AUTOMATIC 3
+
+static gint sctp_checksum = SCTP_CHECKSUM_ADLER32;
+
/* adler32.c -- compute the Adler-32 checksum of a data stream
* Copyright (C) 1995-1996 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
#define DO16(buf) DO8(buf,0); DO8(buf,8);
static unsigned int
-sctp_adler_32(const unsigned char* buf,
- unsigned int len)
+sctp_adler32(const unsigned char* buf, unsigned int len)
{
unsigned int s1 = 1L;
unsigned int s2 = 0L;
return (s2 << 16) | s1;
}
-static char
-*sctp_checksum_state(tvbuff_t *tvb, guint orig_checksum)
+/* The CRC32C code is taken from draft-ietf-tsvwg-sctpcsum-01.txt.
+ * That code is copyrighted by D. Otis and has been modified.
+ */
+
+#define CRC32C(c,d) (c=(c>>8)^crc_c[(c^(d))&0xFF])
+static unsigned long crc_c[256] =
+{
+0x00000000L, 0xF26B8303L, 0xE13B70F7L, 0x1350F3F4L,
+0xC79A971FL, 0x35F1141CL, 0x26A1E7E8L, 0xD4CA64EBL,
+0x8AD958CFL, 0x78B2DBCCL, 0x6BE22838L, 0x9989AB3BL,
+0x4D43CFD0L, 0xBF284CD3L, 0xAC78BF27L, 0x5E133C24L,
+0x105EC76FL, 0xE235446CL, 0xF165B798L, 0x030E349BL,
+0xD7C45070L, 0x25AFD373L, 0x36FF2087L, 0xC494A384L,
+0x9A879FA0L, 0x68EC1CA3L, 0x7BBCEF57L, 0x89D76C54L,
+0x5D1D08BFL, 0xAF768BBCL, 0xBC267848L, 0x4E4DFB4BL,
+0x20BD8EDEL, 0xD2D60DDDL, 0xC186FE29L, 0x33ED7D2AL,
+0xE72719C1L, 0x154C9AC2L, 0x061C6936L, 0xF477EA35L,
+0xAA64D611L, 0x580F5512L, 0x4B5FA6E6L, 0xB93425E5L,
+0x6DFE410EL, 0x9F95C20DL, 0x8CC531F9L, 0x7EAEB2FAL,
+0x30E349B1L, 0xC288CAB2L, 0xD1D83946L, 0x23B3BA45L,
+0xF779DEAEL, 0x05125DADL, 0x1642AE59L, 0xE4292D5AL,
+0xBA3A117EL, 0x4851927DL, 0x5B016189L, 0xA96AE28AL,
+0x7DA08661L, 0x8FCB0562L, 0x9C9BF696L, 0x6EF07595L,
+0x417B1DBCL, 0xB3109EBFL, 0xA0406D4BL, 0x522BEE48L,
+0x86E18AA3L, 0x748A09A0L, 0x67DAFA54L, 0x95B17957L,
+0xCBA24573L, 0x39C9C670L, 0x2A993584L, 0xD8F2B687L,
+0x0C38D26CL, 0xFE53516FL, 0xED03A29BL, 0x1F682198L,
+0x5125DAD3L, 0xA34E59D0L, 0xB01EAA24L, 0x42752927L,
+0x96BF4DCCL, 0x64D4CECFL, 0x77843D3BL, 0x85EFBE38L,
+0xDBFC821CL, 0x2997011FL, 0x3AC7F2EBL, 0xC8AC71E8L,
+0x1C661503L, 0xEE0D9600L, 0xFD5D65F4L, 0x0F36E6F7L,
+0x61C69362L, 0x93AD1061L, 0x80FDE395L, 0x72966096L,
+0xA65C047DL, 0x5437877EL, 0x4767748AL, 0xB50CF789L,
+0xEB1FCBADL, 0x197448AEL, 0x0A24BB5AL, 0xF84F3859L,
+0x2C855CB2L, 0xDEEEDFB1L, 0xCDBE2C45L, 0x3FD5AF46L,
+0x7198540DL, 0x83F3D70EL, 0x90A324FAL, 0x62C8A7F9L,
+0xB602C312L, 0x44694011L, 0x5739B3E5L, 0xA55230E6L,
+0xFB410CC2L, 0x092A8FC1L, 0x1A7A7C35L, 0xE811FF36L,
+0x3CDB9BDDL, 0xCEB018DEL, 0xDDE0EB2AL, 0x2F8B6829L,
+0x82F63B78L, 0x709DB87BL, 0x63CD4B8FL, 0x91A6C88CL,
+0x456CAC67L, 0xB7072F64L, 0xA457DC90L, 0x563C5F93L,
+0x082F63B7L, 0xFA44E0B4L, 0xE9141340L, 0x1B7F9043L,
+0xCFB5F4A8L, 0x3DDE77ABL, 0x2E8E845FL, 0xDCE5075CL,
+0x92A8FC17L, 0x60C37F14L, 0x73938CE0L, 0x81F80FE3L,
+0x55326B08L, 0xA759E80BL, 0xB4091BFFL, 0x466298FCL,
+0x1871A4D8L, 0xEA1A27DBL, 0xF94AD42FL, 0x0B21572CL,
+0xDFEB33C7L, 0x2D80B0C4L, 0x3ED04330L, 0xCCBBC033L,
+0xA24BB5A6L, 0x502036A5L, 0x4370C551L, 0xB11B4652L,
+0x65D122B9L, 0x97BAA1BAL, 0x84EA524EL, 0x7681D14DL,
+0x2892ED69L, 0xDAF96E6AL, 0xC9A99D9EL, 0x3BC21E9DL,
+0xEF087A76L, 0x1D63F975L, 0x0E330A81L, 0xFC588982L,
+0xB21572C9L, 0x407EF1CAL, 0x532E023EL, 0xA145813DL,
+0x758FE5D6L, 0x87E466D5L, 0x94B49521L, 0x66DF1622L,
+0x38CC2A06L, 0xCAA7A905L, 0xD9F75AF1L, 0x2B9CD9F2L,
+0xFF56BD19L, 0x0D3D3E1AL, 0x1E6DCDEEL, 0xEC064EEDL,
+0xC38D26C4L, 0x31E6A5C7L, 0x22B65633L, 0xD0DDD530L,
+0x0417B1DBL, 0xF67C32D8L, 0xE52CC12CL, 0x1747422FL,
+0x49547E0BL, 0xBB3FFD08L, 0xA86F0EFCL, 0x5A048DFFL,
+0x8ECEE914L, 0x7CA56A17L, 0x6FF599E3L, 0x9D9E1AE0L,
+0xD3D3E1ABL, 0x21B862A8L, 0x32E8915CL, 0xC083125FL,
+0x144976B4L, 0xE622F5B7L, 0xF5720643L, 0x07198540L,
+0x590AB964L, 0xAB613A67L, 0xB831C993L, 0x4A5A4A90L,
+0x9E902E7BL, 0x6CFBAD78L, 0x7FAB5E8CL, 0x8DC0DD8FL,
+0xE330A81AL, 0x115B2B19L, 0x020BD8EDL, 0xF0605BEEL,
+0x24AA3F05L, 0xD6C1BC06L, 0xC5914FF2L, 0x37FACCF1L,
+0x69E9F0D5L, 0x9B8273D6L, 0x88D28022L, 0x7AB90321L,
+0xAE7367CAL, 0x5C18E4C9L, 0x4F48173DL, 0xBD23943EL,
+0xF36E6F75L, 0x0105EC76L, 0x12551F82L, 0xE03E9C81L,
+0x34F4F86AL, 0xC69F7B69L, 0xD5CF889DL, 0x27A40B9EL,
+0x79B737BAL, 0x8BDCB4B9L, 0x988C474DL, 0x6AE7C44EL,
+0xBE2DA0A5L, 0x4C4623A6L, 0x5F16D052L, 0xAD7D5351L,
+};
+
+static unsigned int
+sctp_crc32c(const unsigned char* buf, unsigned int len)
{
- guint length;
+ unsigned int i;
+ unsigned long crc32 = ~0L;
+ unsigned long result;
+ unsigned char byte0,byte1,byte2,byte3;
+
+ for (i = 0; i < SOURCE_PORT_LENGTH + DESTINATION_PORT_LENGTH + VERIFICATION_TAG_LENGTH; i++)
+ {
+ CRC32C(crc32, buf[i]);
+ }
+ CRC32C(crc32, 0);
+ CRC32C(crc32, 0);
+ CRC32C(crc32, 0);
+ CRC32C(crc32, 0);
+ for (i = COMMON_HEADER_LENGTH; i < len; i++)
+ {
+ CRC32C(crc32, buf[i]);
+ }
+ result = ~crc32;
- length = tvb_length(tvb);
- if (orig_checksum == sctp_adler_32(tvb_get_ptr(tvb, 0, length), length))
- return "correct";
- else
- return "incorrect";
+ byte0 = result & 0xff;
+ byte1 = (result>>8) & 0xff;
+ byte2 = (result>>16) & 0xff;
+ byte3 = (result>>24) & 0xff;
+ crc32 = ((byte0 << 24) | (byte1 << 16) | (byte2 << 8) | byte3);
+ return ( crc32 );
}
static guint
*/
static void
-dissect_parameter(tvbuff_t *, proto_tree *);
+dissect_parameter(tvbuff_t *, packet_info *, proto_tree *);
+
+static void
+dissect_error_cause(tvbuff_t *, packet_info *, proto_tree *);
static gboolean
dissect_sctp_chunk(tvbuff_t *, packet_info *, proto_tree *, proto_tree *);
static void
-dissect_tlv_parameter_list(tvbuff_t *parameter_list_tvb, proto_tree *tree)
+dissect_tlv_parameter_list(tvbuff_t *parameter_list_tvb, packet_info *pinfo, proto_tree *tree)
{
guint offset, length, padding_length, total_length;
tvbuff_t *parameter_tvb;
offset = 0;
- while(tvb_length_remaining(parameter_list_tvb, offset)) {
+ while(tvb_reported_length_remaining(parameter_list_tvb, offset)) {
length = tvb_get_ntohs(parameter_list_tvb, offset + PARAMETER_LENGTH_OFFSET);
padding_length = nr_of_padding_bytes(length);
total_length = length + padding_length;
/* create a tvb for the chunk including the padding bytes */
parameter_tvb = tvb_new_subset(parameter_list_tvb, offset, total_length, total_length);
- dissect_parameter(parameter_tvb, tree);
+ dissect_parameter(parameter_tvb, pinfo, tree);
/* get rid of the handled parameter */
offset += total_length;
}
}
static void
-dissect_unrecognized_parameters_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+dissect_unrecognized_parameters_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *parameter_tree, proto_item *parameter_item)
{
- guint16 length, padding_length, parameter_value_length;
+ guint16 length, padding_length, parameter_value_length, unrecognized_parameter_type;
tvbuff_t *unrecognized_parameters_tvb;
length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
unrecognized_parameters_tvb = tvb_new_subset(parameter_tvb, PARAMETER_VALUE_OFFSET,
parameter_value_length, parameter_value_length);
- dissect_tlv_parameter_list(unrecognized_parameters_tvb, parameter_tree);
+ unrecognized_parameter_type = tvb_get_ntohs(unrecognized_parameters_tvb, PARAMETER_TYPE_OFFSET);
+ dissect_tlv_parameter_list(unrecognized_parameters_tvb, pinfo, parameter_tree);
- proto_item_set_text(parameter_item, "Unrecognized parameter of type");
+ proto_item_set_text(parameter_item, "Unrecognized parameter of type %s (0x%x)",
+ val_to_str(unrecognized_parameter_type, sctp_parameter_identifier_values, "unknown"), unrecognized_parameter_type);
}
static void
address_type = tvb_get_ntohs(parameter_tvb, offset);
proto_tree_add_uint_format(address_list_tree, hf_sctp_supported_address_types_parameter,
parameter_tvb, offset, SUPPORTED_ADDRESS_TYPE_PARAMETER_ADDRESS_TYPE_LENGTH,
- address_type, "Supported address type: %u (%s)",
+ address_type, "Supported address type: 0x%04x (%s)",
address_type, val_to_str(address_type, sctp_parameter_identifier_values, "unknown"));
offset += SUPPORTED_ADDRESS_TYPE_PARAMETER_ADDRESS_TYPE_LENGTH;
};
}
static void
-dissect_ecn_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+dissect_ecn_parameter(proto_item *parameter_item)
{
proto_item_set_text(parameter_item, "ECN parameter");
}
+static void
+dissect_forward_tsn_supported_parameter(proto_item *parameter_item)
+{
+ proto_item_set_text(parameter_item, "Forward TSN supported parameter");
+}
+
+#define CORRELATION_ID_LENGTH 4
+#define CORRELATION_ID_OFFSET PARAMETER_VALUE_OFFSET
+#define ADDRESS_PARAMETER_OFFSET (CORRELATION_ID_OFFSET + CORRELATION_ID_LENGTH)
+
+static void
+dissect_add_ip_address_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint32 correlation_id;
+ guint16 length, parameter_value_length;
+ tvbuff_t *address_tvb;
+
+ length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+ parameter_value_length = length - PARAMETER_HEADER_LENGTH - CORRELATION_ID_LENGTH;
+ correlation_id = tvb_get_ntohs(parameter_tvb, CORRELATION_ID_OFFSET);
+ proto_tree_add_uint(parameter_tree, hf_sctp_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, correlation_id);
+ address_tvb = tvb_new_subset(parameter_tvb, ADDRESS_PARAMETER_OFFSET, parameter_value_length, parameter_value_length);
+ dissect_parameter(address_tvb, pinfo, parameter_tree);
+
+ proto_item_set_text(parameter_item, "Add IP address parameter");
+}
+
+static void
+dissect_del_ip_address_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint32 correlation_id;
+ guint16 length, parameter_value_length;
+ tvbuff_t *address_tvb;
+
+ length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+ parameter_value_length = length - PARAMETER_HEADER_LENGTH - CORRELATION_ID_LENGTH;
+ correlation_id = tvb_get_ntohs(parameter_tvb, CORRELATION_ID_OFFSET);
+ proto_tree_add_uint(parameter_tree, hf_sctp_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, correlation_id);
+ address_tvb = tvb_new_subset(parameter_tvb, ADDRESS_PARAMETER_OFFSET, parameter_value_length, parameter_value_length);
+ dissect_parameter(address_tvb, pinfo, parameter_tree);
+
+ proto_item_set_text(parameter_item, "Delete IP address parameter");
+}
+
+static void
+dissect_error_cause_indication_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint32 correlation_id;
+ guint16 length, padding_length, total_length;
+ gint offset;
+ tvbuff_t *error_cause_tvb;
+
+ correlation_id = tvb_get_ntohs(parameter_tvb, CORRELATION_ID_OFFSET);
+ proto_tree_add_uint(parameter_tree, hf_sctp_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, correlation_id);
+
+ offset = PARAMETER_VALUE_OFFSET + CORRELATION_ID_LENGTH;
+ while(tvb_reported_length_remaining(parameter_tvb, offset)) {
+ length = tvb_get_ntohs(parameter_tvb, offset + CAUSE_LENGTH_OFFSET);
+ padding_length = nr_of_padding_bytes(length);
+ total_length = length + padding_length;
+ /* create a tvb for the chunk including the padding bytes */
+ error_cause_tvb = tvb_new_subset(parameter_tvb, offset , total_length, total_length);
+ dissect_error_cause(error_cause_tvb, pinfo, parameter_tree);
+ /* get rid of the handled parameter */
+ offset += total_length;
+ }
+ proto_item_set_text(parameter_item, "Error cause indication");
+}
+
+static void
+dissect_set_primary_address_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint32 correlation_id;
+ guint16 length, parameter_value_length;
+ tvbuff_t *address_tvb;
+
+ length = tvb_get_ntohs(parameter_tvb, PARAMETER_LENGTH_OFFSET);
+ parameter_value_length = length - PARAMETER_HEADER_LENGTH - CORRELATION_ID_LENGTH;
+
+ correlation_id = tvb_get_ntohs(parameter_tvb, CORRELATION_ID_OFFSET);
+ proto_tree_add_uint(parameter_tree, hf_sctp_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, correlation_id);
+ address_tvb = tvb_new_subset(parameter_tvb, ADDRESS_PARAMETER_OFFSET, parameter_value_length, parameter_value_length);
+ dissect_parameter(address_tvb, pinfo, parameter_tree);
+
+ proto_item_set_text(parameter_item, "Set primary address parameter");
+}
+
+static void
+dissect_success_report_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint32 correlation_id;
+
+ correlation_id = tvb_get_ntohs(parameter_tvb, CORRELATION_ID_OFFSET);
+ proto_tree_add_uint(parameter_tree, hf_sctp_correlation_id, parameter_tvb, CORRELATION_ID_OFFSET, CORRELATION_ID_LENGTH, correlation_id);
+
+ proto_item_set_text(parameter_item, "Success report parameter");
+}
+
+#define ADAP_INDICATION_LENGTH 4
+#define ADAP_INDICATION_OFFSET PARAMETER_VALUE_OFFSET
+
+static void
+dissect_adap_indication_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
+{
+ guint32 indication;
+
+ indication = tvb_get_ntohl(parameter_tvb, ADAP_INDICATION_OFFSET);
+ proto_tree_add_uint(parameter_tree, hf_sctp_adap_indication, parameter_tvb, ADAP_INDICATION_OFFSET, ADAP_INDICATION_LENGTH, indication);
+ proto_item_set_text(parameter_item, "Adaptation layer indication");
+}
+
static void
dissect_unknown_parameter(tvbuff_t *parameter_tvb, proto_tree *parameter_tree, proto_item *parameter_item)
{
}
static void
-dissect_parameter(tvbuff_t *parameter_tvb, proto_tree *chunk_tree)
+dissect_parameter(tvbuff_t *parameter_tvb, packet_info *pinfo, proto_tree *chunk_tree)
{
guint16 type, length, padding_length, total_length;
proto_item *parameter_item;
val_to_str(type, sctp_parameter_identifier_values, "Unknown"));
parameter_tree = proto_item_add_subtree(parameter_item, ett_sctp_chunk_parameter);
- proto_tree_add_uint_format(parameter_tree, hf_sctp_chunk_parameter_type,
- parameter_tvb, PARAMETER_TYPE_OFFSET, PARAMETER_TYPE_LENGTH,
- type, "Parameter type: %u (%s)",
- type, val_to_str(type, sctp_parameter_identifier_values, "unknown"));
+ proto_tree_add_uint(parameter_tree, hf_sctp_chunk_parameter_type,
+ parameter_tvb, PARAMETER_TYPE_OFFSET, PARAMETER_TYPE_LENGTH,
+ type);
proto_tree_add_uint(parameter_tree, hf_sctp_chunk_parameter_length,
parameter_tvb, PARAMETER_LENGTH_OFFSET, PARAMETER_LENGTH_LENGTH,
length);
dissect_state_cookie_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case UNREC_PARA_PARAMETER_ID:
- dissect_unrecognized_parameters_parameter(parameter_tvb, parameter_tree, parameter_item);
+ dissect_unrecognized_parameters_parameter(parameter_tvb, pinfo, parameter_tree, parameter_item);
break;
case COOKIE_PRESERVATIVE_PARAMETER_ID:
dissect_cookie_preservative_parameter(parameter_tvb, parameter_tree, parameter_item);
dissect_supported_address_types_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
case ECN_PARAMETER_ID:
- dissect_ecn_parameter(parameter_tvb, parameter_tree, parameter_item);
+ dissect_ecn_parameter(parameter_item);
+ break;
+ case FORWARD_TSN_SUPPORTED_PARAMETER_ID:
+ dissect_forward_tsn_supported_parameter(parameter_item);
+ break;
+ case ADD_IP_ADDRESS_PARAMETER_ID:
+ dissect_add_ip_address_parameter(parameter_tvb, pinfo, parameter_tree, parameter_item);
break;
+ case DEL_IP_ADDRESS_PARAMETER_ID:
+ dissect_del_ip_address_parameter(parameter_tvb, pinfo, parameter_tree, parameter_item);
+ break;
+ case ERROR_CAUSE_INDICATION_PARAMETER_ID:
+ dissect_error_cause_indication_parameter(parameter_tvb, pinfo, parameter_tree, parameter_item);
+ break;
+ case SET_PRIMARY_ADDRESS_PARAMETER_ID:
+ dissect_set_primary_address_parameter(parameter_tvb, pinfo, parameter_tree, parameter_item);
+ break;
+ case SUCCESS_REPORT_PARAMETER_ID:
+ dissect_success_report_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
+ case ADAP_LAYER_INDICATION_PARAMETER_ID:
+ dissect_adap_indication_parameter(parameter_tvb, parameter_tree, parameter_item);
+ break;
default:
dissect_unknown_parameter(parameter_tvb, parameter_tree, parameter_item);
break;
offset = CAUSE_FIRST_MISSING_PARAMETER_TYPE_OFFSET;
for(missing_parameter_number = 1; missing_parameter_number <= number_of_missing_parameters; missing_parameter_number++) {
parameter_type = tvb_get_ntohs(cause_tvb, offset);
- proto_tree_add_uint_format(cause_tree, hf_sctp_cause_missing_parameter_type,
- cause_tvb, offset, CAUSE_MISSING_PARAMETER_TYPE_LENGTH,
- parameter_type, "Missing parameter type: %u (%s)",
- parameter_type,
- val_to_str(parameter_type, sctp_parameter_identifier_values, "unknown"));
+ proto_tree_add_uint(cause_tree, hf_sctp_cause_missing_parameter_type,
+ cause_tvb, offset, CAUSE_MISSING_PARAMETER_TYPE_LENGTH,
+ parameter_type);
offset += CAUSE_MISSING_PARAMETER_TYPE_LENGTH;
};
}
static void
-dissect_out_of_resource_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
+dissect_out_of_resource_cause(proto_item *cause_item)
{
proto_item_set_text(cause_item, "Error cause reporting lack of resources");
}
static void
-dissect_unresolvable_address_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
+dissect_unresolvable_address_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree, proto_item *cause_item)
{
guint16 code, length, parameter_length, parameter_type;
tvbuff_t *parameter_tvb;
parameter_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET,
parameter_length, parameter_length);
- dissect_parameter(parameter_tvb, cause_tree);
+ dissect_parameter(parameter_tvb, pinfo, cause_tree);
parameter_type = tvb_get_ntohs(parameter_tvb, PARAMETER_TYPE_OFFSET);
- proto_item_set_text(cause_item, "Error cause reporting unresolvable address of type %u (%s)",
+ proto_item_set_text(cause_item, "Error cause reporting unresolvable address of type 0x%04x (%s)",
parameter_type, val_to_str(parameter_type, sctp_parameter_identifier_values, "unknown") );
}
chunk_length = length - CAUSE_HEADER_LENGTH;
- unrecognized_chunk_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET,
- chunk_length, chunk_length);
+ unrecognized_chunk_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, chunk_length, chunk_length);
dissect_sctp_chunk(unrecognized_chunk_tvb, pinfo, cause_tree,cause_tree);
unrecognized_type = tvb_get_guint8(unrecognized_chunk_tvb, CHUNK_TYPE_OFFSET);
}
static void
-dissect_invalid_mandatory_parameter_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
+dissect_invalid_mandatory_parameter_cause(proto_item *cause_item)
{
proto_item_set_text(cause_item, "Error cause reporting an invalid mandatory parameter");
}
static void
-dissect_unrecognized_parameters_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
+dissect_unrecognized_parameters_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree, proto_item *cause_item)
{
guint16 length, padding_length, cause_info_length;
tvbuff_t *unrecognized_parameters_tvb;
- length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
- padding_length = nr_of_padding_bytes(length);
-
+ length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
+ padding_length = nr_of_padding_bytes(length);
cause_info_length = length - CAUSE_HEADER_LENGTH + padding_length;
- unrecognized_parameters_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET,
- cause_info_length, cause_info_length);
- dissect_tlv_parameter_list(unrecognized_parameters_tvb, cause_tree);
+ unrecognized_parameters_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, cause_info_length);
+ dissect_tlv_parameter_list(unrecognized_parameters_tvb, pinfo, cause_tree);
proto_item_set_text(cause_item, "Error cause reporting unrecognized parameters");
}
}
static void
-dissect_cookie_received_while_shutting_down_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
+dissect_cookie_received_while_shutting_down_cause(proto_item *cause_item)
{
proto_item_set_text(cause_item, "Error cause reporting cookie reception while shutting down");
}
+static void
+dissect_delete_last_address_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree, proto_item *cause_item)
+{
+ guint16 length, cause_info_length;
+ tvbuff_t *parameter_tvb;
+
+ length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
+ cause_info_length = length - CAUSE_HEADER_LENGTH;
+ parameter_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, cause_info_length);
+ dissect_parameter(parameter_tvb, pinfo, cause_tree);
+ proto_item_set_text(cause_item, "Delete last address cause");
+}
+
+static void
+dissect_resource_outage_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree, proto_item *cause_item)
+{
+ guint16 length, cause_info_length;
+ tvbuff_t *parameter_tvb;
+
+ length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
+ cause_info_length = length - CAUSE_HEADER_LENGTH;
+ parameter_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, cause_info_length);
+ dissect_parameter(parameter_tvb, pinfo, cause_tree);
+ proto_item_set_text(cause_item, "Operation refused due to resource shortage");
+}
+
+static void
+dissect_delete_source_address_cause(tvbuff_t *cause_tvb, packet_info *pinfo, proto_tree *cause_tree, proto_item *cause_item)
+{
+ guint16 length, cause_info_length;
+ tvbuff_t *parameter_tvb;
+
+ length = tvb_get_ntohs(cause_tvb, CAUSE_LENGTH_OFFSET);
+ cause_info_length = length - CAUSE_HEADER_LENGTH;
+ parameter_tvb = tvb_new_subset(cause_tvb, CAUSE_INFO_OFFSET, cause_info_length, cause_info_length);
+ dissect_parameter(parameter_tvb, pinfo, cause_tree);
+ proto_item_set_text(cause_item, "Delete source address cause");
+}
+
static void
dissect_unknown_cause(tvbuff_t *cause_tvb, proto_tree *cause_tree, proto_item *cause_item)
{
"BAD ERROR CAUSE");
cause_tree = proto_item_add_subtree(cause_item, ett_sctp_chunk_cause);
- proto_tree_add_uint_format(cause_tree, hf_sctp_cause_code,
- cause_tvb, CAUSE_CODE_OFFSET, CAUSE_CODE_LENGTH,
- code, "Cause code: %u (%s)",
- code, val_to_str(code, sctp_cause_code_values, "unknown"));
+ proto_tree_add_uint(cause_tree, hf_sctp_cause_code,
+ cause_tvb, CAUSE_CODE_OFFSET, CAUSE_CODE_LENGTH,
+ code);
proto_tree_add_uint(cause_tree, hf_sctp_cause_length,
cause_tvb, CAUSE_LENGTH_OFFSET, CAUSE_LENGTH_LENGTH,
length);
dissect_stale_cookie_error_cause(cause_tvb, cause_tree, cause_item);
break;
case OUT_OF_RESOURCE:
- dissect_out_of_resource_cause(cause_tvb, cause_tree, cause_item);
+ dissect_out_of_resource_cause(cause_item);
break;
case UNRESOLVABLE_ADDRESS:
- dissect_unresolvable_address_cause(cause_tvb, cause_tree, cause_item);
+ dissect_unresolvable_address_cause(cause_tvb, pinfo, cause_tree, cause_item);
break;
case UNRECOGNIZED_CHUNK_TYPE:
dissect_unrecognized_chunk_type_cause(cause_tvb, pinfo, cause_tree, cause_item);
break;
case INVALID_MANDATORY_PARAMETER:
- dissect_invalid_mandatory_parameter_cause(cause_tvb, cause_tree, cause_item);
+ dissect_invalid_mandatory_parameter_cause(cause_item);
break;
case UNRECOGNIZED_PARAMETERS:
- dissect_unrecognized_parameters_cause(cause_tvb, cause_tree, cause_item);
+ dissect_unrecognized_parameters_cause(cause_tvb, pinfo, cause_tree, cause_item);
break;
case NO_USER_DATA:
dissect_no_user_data_cause(cause_tvb, cause_tree, cause_item);
break;
case COOKIE_RECEIVED_WHILE_SHUTTING_DOWN:
- dissect_cookie_received_while_shutting_down_cause(cause_tvb, cause_tree, cause_item);
+ dissect_cookie_received_while_shutting_down_cause(cause_item);
+ break;
+ case REQUEST_TO_DELETE_LAST_ADDRESS:
+ dissect_delete_last_address_cause(cause_tvb, pinfo, cause_tree, cause_item);
+ break;
+ case OPERATION_REFUSED_DUE_TO_RESOURCE_SHORTAGE:
+ dissect_resource_outage_cause(cause_tvb, pinfo, cause_tree, cause_item);
+ break;
+ case REQUEST_TO_DELETE_SOURCE_ADDRESS:
+ dissect_delete_source_address_cause(cause_tvb, pinfo, cause_tree, cause_item);
break;
default:
dissect_unknown_cause(cause_tvb, cause_tree, cause_item);
*/
static gboolean
-dissect_payload(tvbuff_t *payload_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, guint32 ppi, guint16 payload_length, guint16 padding_length)
+dissect_payload(tvbuff_t *payload_tvb, packet_info *pinfo, proto_tree *tree, guint32 ppi)
{
- /* do lookup with the subdissector table */
- if (dissector_try_port (sctp_ppi_dissector_table, ppi, payload_tvb, pinfo, tree) ||
- dissector_try_port(sctp_port_dissector_table, pinfo->srcport, payload_tvb, pinfo, tree) ||
- dissector_try_port(sctp_port_dissector_table, pinfo->destport, payload_tvb, pinfo, tree)){
+ guint32 low_port, high_port;
+
+ /* Do lookups with the subdissector table.
+
+ When trying port numbers, we try the port number with the lower value
+ first, followed by the port number with the higher value. This means
+ that, for packets where a dissector is registered for *both* port
+ numbers, and where there's no match on the PPI:
+
+ 1) we pick the same dissector for traffic going in both directions;
+
+ 2) we prefer the port number that's more likely to be the right
+ one (as that prefers well-known ports to reserved ports);
+
+ although there is, of course, no guarantee that any such strategy
+ will always pick the right port number.
+
+ XXX - we ignore port numbers of 0, as some dissectors use a port
+ number of 0 to disable the port. */
+ if (dissector_try_port(sctp_ppi_dissector_table, ppi, payload_tvb, pinfo, tree))
return TRUE;
+ if (pinfo->srcport > pinfo->destport) {
+ low_port = pinfo->destport;
+ high_port = pinfo->srcport;
+ } else {
+ low_port = pinfo->srcport;
+ high_port = pinfo->destport;
}
- else {
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "DATA ");
- proto_tree_add_text(chunk_tree, payload_tvb, 0, payload_length,
- "Payload (%u byte%s)",
- payload_length, plurality(payload_length, "", "s"));
- if (padding_length > 0)
- proto_tree_add_text(chunk_tree, payload_tvb, payload_length, padding_length,
- "Padding: %u byte%s",
- padding_length, plurality(padding_length, "", "s"));
- return FALSE;
- }
+ if (low_port != 0 &&
+ dissector_try_port(sctp_port_dissector_table, low_port, payload_tvb, pinfo, tree))
+ return TRUE;
+ if (high_port != 0 &&
+ dissector_try_port(sctp_port_dissector_table, high_port, payload_tvb, pinfo, tree))
+ return TRUE;
+
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "DATA ");
+ call_dissector(data_handle, payload_tvb, pinfo, tree);
+ return TRUE;
}
static gboolean
padding_length = nr_of_padding_bytes(length);
total_payload_length = payload_length + padding_length;
payload_tvb = tvb_new_subset(chunk_tvb, DATA_CHUNK_PAYLOAD_OFFSET,
- total_payload_length, total_payload_length);
+ payload_length, payload_length);
payload_proto_id = tvb_get_ntohl(chunk_tvb, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET);
if (chunk_tree) {
chunk_tvb,
DATA_CHUNK_STREAM_SEQ_NUMBER_OFFSET, DATA_CHUNK_STREAM_SEQ_NUMBER_LENGTH,
stream_seq_number);
- proto_tree_add_uint_format(chunk_tree, hf_sctp_data_chunk_payload_proto_id,
- chunk_tvb, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH,
- payload_proto_id, "Payload protocol identifier: %u (%s)",
- payload_proto_id, val_to_str(payload_proto_id, sctp_payload_proto_id_values, "unknown"));
+ proto_tree_add_uint(chunk_tree, hf_sctp_data_chunk_payload_proto_id,
+ chunk_tvb, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_OFFSET, DATA_CHUNK_PAYLOAD_PROTOCOL_ID_LENGTH,
+ payload_proto_id);
+ if (padding_length > 0)
+ proto_tree_add_text(chunk_tree, chunk_tvb, DATA_CHUNK_PAYLOAD_OFFSET + payload_length, padding_length,
+ "Padding: %u byte%s",
+ padding_length, plurality(padding_length, "", "s"));
+
proto_item_set_text(chunk_item, "DATA chunk with TSN %u (%u:%u) containing %u byte%s of payload",
tsn, stream_id, stream_seq_number,
payload_length, plurality(payload_length, "", "s"));
+ proto_item_set_len(chunk_item, DATA_CHUNK_HEADER_LENGTH);
+
};
- return dissect_payload(payload_tvb, pinfo, tree, chunk_tree, payload_proto_id, payload_length, padding_length);
+ return dissect_payload(payload_tvb, pinfo, tree, payload_proto_id);
}
static void
-dissect_init_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_init_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
+ proto_tree *chunk_tree, proto_item *chunk_item)
{
guint32 initiate_tag, adv_rec_window_credit, initial_tsn;
guint16 number_of_inbound_streams, number_of_outbound_streams;
type = tvb_get_guint8(chunk_tvb, CHUNK_TYPE_OFFSET);
- if (check_col(pinfo->fd, COL_INFO)) {
+ if (check_col(pinfo->cinfo, COL_INFO)) {
if (type == SCTP_INIT_CHUNK_ID) {
- col_append_str(pinfo->fd, COL_INFO, "INIT ");
+ col_append_str(pinfo->cinfo, COL_INFO, "INIT ");
} else {
- col_append_str(pinfo->fd, COL_INFO, "INIT_ACK ");
+ col_append_str(pinfo->cinfo, COL_INFO, "INIT_ACK ");
};
};
/* handle variable paramters */
parameter_list_tvb = tvb_new_subset(chunk_tvb, INIT_CHUNK_VARIABLE_LENGTH_PARAMETER_OFFSET, -1, -1);
- dissect_tlv_parameter_list(parameter_list_tvb, chunk_tree);
+ dissect_tlv_parameter_list(parameter_list_tvb, pinfo, chunk_tree);
proto_item_set_text(chunk_item,
"%s chunk requesting for %u outbound stream%s and accepting up to %u inbound stream%s",
}
static void
-dissect_init_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_init_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
+ proto_tree *chunk_tree, proto_item *chunk_item)
{
- dissect_init_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_init_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
}
static void
-dissect_sack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_sack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
+ proto_tree *chunk_tree, proto_item *chunk_item)
{
guint32 cumulative_tsn_ack, adv_rec_window_credit, dup_tsn;
guint16 number_of_gap_blocks, number_of_dup_tsns;
proto_item *block_item;
proto_tree *block_tree;
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "SACK ");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "SACK ");
if (chunk_tree) {
cumulative_tsn_ack = tvb_get_ntohl(chunk_tvb, SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET);
}
static void
-dissect_heartbeat_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_heartbeat_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
+ proto_tree *chunk_tree, proto_item *chunk_item)
{
tvbuff_t *parameter_tvb;
guint chunk_length, info_length, padding_length, total_length;
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "HEARTBEAT ");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "HEARTBEAT ");
if (chunk_tree) {
chunk_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
total_length = info_length + padding_length;
parameter_tvb = tvb_new_subset(chunk_tvb, HEARTBEAT_CHUNK_INFO_OFFSET, total_length, total_length);
- dissect_parameter(parameter_tvb, chunk_tree);
+ dissect_parameter(parameter_tvb, pinfo, chunk_tree);
proto_item_set_text(chunk_item, "HEARTBEAT chunk");
}
}
static void
-dissect_heartbeat_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_heartbeat_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
+ proto_tree *chunk_tree, proto_item *chunk_item)
{
tvbuff_t *parameter_tvb;
guint chunk_length, info_length, padding_length, total_length;
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "HEARTBEAT_ACK ");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "HEARTBEAT_ACK ");
if (chunk_tree) {
chunk_length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
parameter_tvb = tvb_new_subset(chunk_tvb, HEARTBEAT_CHUNK_INFO_OFFSET, total_length, total_length);
- dissect_parameter(parameter_tvb, chunk_tree);
+ dissect_parameter(parameter_tvb, pinfo, chunk_tree);
proto_item_set_text(chunk_item, "HEARTBEAT ACK chunk");
}
}
static void
-dissect_abort_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_abort_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
+ guint8 flags;
guint offset, number_of_causes;
guint16 length, padding_length, total_length;
tvbuff_t *cause_tvb;
-
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "ABORT ");
+ proto_tree *flag_tree;
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "ABORT ");
if (chunk_tree) {
+ flags = tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET);
+ flag_tree = proto_item_add_subtree(flags_item, ett_sctp_abort_chunk_flags);
+ proto_tree_add_boolean(flag_tree, hf_sctp_abort_chunk_t_bit, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, flags);
+
number_of_causes = 0;
offset = ABORT_CHUNK_FIRST_ERROR_CAUSE_OFFSET;
- while(tvb_length_remaining(chunk_tvb, offset)) {
- length = tvb_get_ntohs(chunk_tvb, offset + CAUSE_LENGTH_OFFSET);
- padding_length = nr_of_padding_bytes(length);
- total_length = length + padding_length;
- /* create a tvb for the chunk including the padding bytes */
- cause_tvb = tvb_new_subset(chunk_tvb, offset, total_length, total_length);
- dissect_error_cause(cause_tvb, pinfo, chunk_tree);
- /* get rid of the handled parameter */
- offset += total_length;
- number_of_causes++;
+ while(tvb_reported_length_remaining(chunk_tvb, offset)) {
+ length = tvb_get_ntohs(chunk_tvb, offset + CAUSE_LENGTH_OFFSET);
+ padding_length = nr_of_padding_bytes(length);
+ total_length = length + padding_length;
+ /* create a tvb for the chunk including the padding bytes */
+ cause_tvb = tvb_new_subset(chunk_tvb, offset, total_length, total_length);
+ dissect_error_cause(cause_tvb, pinfo, chunk_tree);
+ /* get rid of the handled parameter */
+ offset += total_length;
+ number_of_causes++;
};
- proto_item_set_text(chunk_item, "Abort chunk with %u cause%s",
- number_of_causes, plurality(number_of_causes, "", "s"));
+ proto_item_set_text(chunk_item, "Abort chunk with %u cause%s", number_of_causes, plurality(number_of_causes, "", "s"));
}
}
static void
-dissect_shutdown_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_shutdown_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
+ proto_tree *chunk_tree, proto_item *chunk_item)
{
guint32 cumulative_tsn_ack;
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "SHUTDOWN ");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "SHUTDOWN ");
if (chunk_tree) {
cumulative_tsn_ack = tvb_get_ntohl(chunk_tvb, SHUTDOWN_CHUNK_CUMULATIVE_TSN_ACK_OFFSET);
}
static void
-dissect_shutdown_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_shutdown_ack_chunk(packet_info *pinfo,
+ proto_tree *chunk_tree, proto_item *chunk_item)
{
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "SHUTDOWN_ACK ");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "SHUTDOWN_ACK ");
if (chunk_tree) {
proto_item_set_text(chunk_item, "SHUTDOWN ACK chunk");
}
static void
-dissect_error_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_error_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
+ proto_tree *chunk_tree, proto_item *chunk_item)
{
guint offset, number_of_causes;
guint16 length, padding_length, total_length;
tvbuff_t *cause_tvb;
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "ERROR ");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "ERROR ");
if (chunk_tree) {
number_of_causes = 0;
/* get rid of the handled parameter */
offset += total_length;
number_of_causes++;
- } while(tvb_length_remaining(chunk_tvb, offset));
+ } while(tvb_reported_length_remaining(chunk_tvb, offset));
proto_item_set_text(chunk_item, "Error chunk with %u cause%s",
number_of_causes, plurality(number_of_causes, "", "s"));
}
static void
-dissect_cookie_echo_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_cookie_echo_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
+ proto_tree *chunk_tree, proto_item *chunk_item)
{
guint length, cookie_length, padding_length;
padding_length = nr_of_padding_bytes(length);
cookie_length = length - CHUNK_HEADER_LENGTH;
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "COOKIE_ECHO ");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "COOKIE_ECHO ");
if (chunk_tree) {
proto_tree_add_text(chunk_tree, chunk_tvb, COOKIE_ECHO_CHUNK_COOKIE_OFFSET, cookie_length,
}
static void
-dissect_cookie_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_cookie_ack_chunk(packet_info *pinfo,
+ proto_tree *chunk_tree, proto_item *chunk_item)
{
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "COOKIE_ACK ");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "COOKIE_ACK ");
if (chunk_tree) {
proto_item_set_text(chunk_item, "COOKIE ACK chunk");
}
static void
-dissect_ecne_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_ecne_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
+ proto_tree *chunk_tree, proto_item *chunk_item)
{
guint32 lowest_tsn;
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "ECNE ");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "ECNE ");
if (chunk_tree) {
lowest_tsn = tvb_get_ntohl(chunk_tvb, ECNE_CHUNK_LOWEST_TSN_OFFSET);
}
static void
-dissect_cwr_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_cwr_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
+ proto_tree *chunk_tree, proto_item *chunk_item)
{
guint32 lowest_tsn;
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "CWR ");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "CWR ");
if (chunk_tree) {
lowest_tsn = tvb_get_ntohl(chunk_tvb, CWR_CHUNK_LOWEST_TSN_OFFSET);
}
static void
-dissect_shutdown_complete_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
+dissect_shutdown_complete_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
{
guint8 flags;
guint16 length;
proto_tree *flag_tree;
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "SHUTDOWN_COMPLETE ");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "SHUTDOWN_COMPLETE ");
if (chunk_tree) {
flags = tvb_get_guint8(chunk_tvb, CHUNK_FLAGS_OFFSET);
length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
- flag_tree = proto_item_add_subtree(flags_item, ett_sctp_data_chunk_flags);
+ flag_tree = proto_item_add_subtree(flags_item, ett_sctp_shutdown_complete_chunk_flags);
proto_tree_add_boolean(flag_tree, hf_sctp_shutdown_complete_chunk_t_bit, chunk_tvb,
CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, flags);
}
}
+#define FORWARD_TSN_CHUNK_TSN_LENGTH 4
+#define FORWARD_TSN_CHUNK_SID_LENGTH 2
+#define FORWARD_TSN_CHUNK_SSN_LENGTH 2
+#define FORWARD_TSN_CHUNK_TSN_OFFSET CHUNK_VALUE_OFFSET
+#define FORWARD_TSN_CHUNK_SID_OFFSET 0
+#define FORWARD_TSN_CHUNK_SSN_OFFSET (FORWARD_TSN_CHUNK_SID_OFFSET + FORWARD_TSN_CHUNK_SID_LENGTH)
+
+static void
+dissect_forward_tsn_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *chunk_item)
+{
+ guint32 tsn;
+ guint offset;
+ guint16 number_of_affected_streams, affected_stream, length, sid, ssn;
+
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "FORWARD TSN ");
+
+ if (chunk_tree) {
+ tsn = tvb_get_ntohl(chunk_tvb, FORWARD_TSN_CHUNK_TSN_OFFSET);
+ proto_tree_add_uint(chunk_tree, hf_sctp_forward_tsn_chunk_tsn, chunk_tvb, FORWARD_TSN_CHUNK_TSN_OFFSET, FORWARD_TSN_CHUNK_TSN_LENGTH, tsn);
+ length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
+ number_of_affected_streams = (length - CHUNK_HEADER_LENGTH - FORWARD_TSN_CHUNK_TSN_LENGTH) /
+ (FORWARD_TSN_CHUNK_SID_LENGTH + FORWARD_TSN_CHUNK_SSN_LENGTH);
+ offset = CHUNK_VALUE_OFFSET + FORWARD_TSN_CHUNK_TSN_LENGTH;
+
+ for(affected_stream = 0; affected_stream < number_of_affected_streams; affected_stream++) {
+ sid = tvb_get_ntohs(chunk_tvb, offset + FORWARD_TSN_CHUNK_SID_OFFSET);
+ ssn = tvb_get_ntohs(chunk_tvb, offset + FORWARD_TSN_CHUNK_SSN_OFFSET);
+ proto_tree_add_uint(chunk_tree, hf_sctp_forward_tsn_chunk_sid,
+ chunk_tvb, offset + FORWARD_TSN_CHUNK_SID_OFFSET, FORWARD_TSN_CHUNK_SID_LENGTH, sid);
+ proto_tree_add_uint(chunk_tree, hf_sctp_forward_tsn_chunk_ssn,
+ chunk_tvb, offset + FORWARD_TSN_CHUNK_SSN_OFFSET, FORWARD_TSN_CHUNK_SSN_LENGTH, ssn);
+ offset = offset + (FORWARD_TSN_CHUNK_SID_LENGTH + FORWARD_TSN_CHUNK_SSN_LENGTH);
+ }
+ proto_item_set_text(chunk_item, "FORWARD TSN chunk (new cumulative TSN %u)", tsn);
+ }
+}
+
+#define SERIAL_NUMBER_LENGTH 4
+#define SERIAL_NUMBER_OFFSET PARAMETER_VALUE_OFFSET
+
+static void
+dissect_asconf_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *chunk_item)
+{
+ guint32 serial_number;
+ guint offset, length, padding_length, total_length;
+ tvbuff_t *parameter_tvb;
+
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "ASCONF ");
+
+ if (chunk_tree) {
+ offset = SERIAL_NUMBER_OFFSET;
+ serial_number = tvb_get_ntohl(chunk_tvb, offset);
+ proto_tree_add_uint(chunk_tree, hf_sctp_asconf_serial, chunk_tvb, offset, SERIAL_NUMBER_LENGTH, serial_number);
+ offset += SERIAL_NUMBER_LENGTH;
+ proto_item_set_text(chunk_item, "ASCONF chunk");
+
+ while(tvb_reported_length_remaining(chunk_tvb, offset)) {
+ length = tvb_get_ntohs(chunk_tvb, offset + PARAMETER_LENGTH_OFFSET);
+ padding_length = nr_of_padding_bytes(length);
+ total_length = length + padding_length;
+ /* create a tvb for the chunk including the padding bytes */
+ parameter_tvb = tvb_new_subset(chunk_tvb, offset, total_length, total_length);
+ dissect_parameter(parameter_tvb, pinfo, chunk_tree);
+ /* get rid of the handled parameter */
+ offset += total_length;
+ }
+ }
+}
+
+static void
+dissect_asconf_ack_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *chunk_tree, proto_item *chunk_item)
+{
+ guint32 serial_number;
+ guint offset, length, padding_length, total_length;
+ tvbuff_t *parameter_tvb;
+
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "ASCONF-ACK ");
+
+ if (chunk_tree) {
+ serial_number = tvb_get_ntohl(chunk_tvb, SERIAL_NUMBER_OFFSET);
+ proto_tree_add_uint(chunk_tree, hf_sctp_asconf_ack_serial, chunk_tvb, SERIAL_NUMBER_OFFSET, SERIAL_NUMBER_LENGTH, serial_number);
+ proto_item_set_text(chunk_item, "ASCONF-ACK chunk");
+
+ offset = SERIAL_NUMBER_OFFSET + SERIAL_NUMBER_LENGTH;
+ while(tvb_reported_length_remaining(chunk_tvb, offset)) {
+ length = tvb_get_ntohs(chunk_tvb, offset + PARAMETER_LENGTH_OFFSET);
+ padding_length = nr_of_padding_bytes(length);
+ total_length = length + padding_length;
+ /* create a tvb for the chunk including the padding bytes */
+ parameter_tvb = tvb_new_subset(chunk_tvb, offset, total_length, total_length);
+ dissect_parameter(parameter_tvb, pinfo, chunk_tree);
+ /* get rid of the handled parameter */
+ offset += total_length;
+ }
+ }
+}
+
static void
-dissect_unknown_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo, proto_tree *tree,
- proto_tree *chunk_tree, proto_item *chunk_item, proto_item *flags_item)
+dissect_unknown_chunk(tvbuff_t *chunk_tvb, packet_info *pinfo,
+ proto_tree *chunk_tree, proto_item *chunk_item)
{
guint length, chunk_value_length, padding_length;
guint8 type;
- if (check_col(pinfo->fd, COL_INFO))
- col_append_str(pinfo->fd, COL_INFO, "UNKNOWN ");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_append_str(pinfo->cinfo, COL_INFO, "UNKNOWN ");
if (chunk_tree) {
length = tvb_get_ntohs(chunk_tvb, CHUNK_LENGTH_OFFSET);
if (tree) {
/* create proto_tree stuff */
- chunk_item = proto_tree_add_text(sctp_tree, chunk_tvb,
- CHUNK_HEADER_OFFSET, tvb_length(chunk_tvb), "Incomplete chunk");
+ chunk_item = proto_tree_add_text(sctp_tree, chunk_tvb, CHUNK_HEADER_OFFSET, -1, "Incomplete chunk");
chunk_tree = proto_item_add_subtree(chunk_item, ett_sctp_chunk);
/* then insert the chunk header components into the protocol tree */
- proto_tree_add_uint_format(chunk_tree, hf_sctp_chunk_type,
- chunk_tvb, CHUNK_TYPE_OFFSET, CHUNK_TYPE_LENGTH,
- type, "Identifier: %u (%s)",
- type, val_to_str(type, sctp_chunk_type_values, "unknown"));
- flags_item = proto_tree_add_uint(chunk_tree, hf_sctp_chunk_flags,
- chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH,
- flags);
- proto_tree_add_uint(chunk_tree, hf_sctp_chunk_length,
- chunk_tvb, CHUNK_LENGTH_OFFSET, CHUNK_LENGTH_LENGTH,
- length);
+ proto_tree_add_uint(chunk_tree, hf_sctp_chunk_type, chunk_tvb, CHUNK_TYPE_OFFSET, CHUNK_TYPE_LENGTH, type);
+ flags_item = proto_tree_add_uint(chunk_tree, hf_sctp_chunk_flags, chunk_tvb, CHUNK_FLAGS_OFFSET, CHUNK_FLAGS_LENGTH, flags);
+ proto_tree_add_uint(chunk_tree, hf_sctp_chunk_length, chunk_tvb, CHUNK_LENGTH_OFFSET, CHUNK_LENGTH_LENGTH, length);
} else {
chunk_tree = NULL;
chunk_item = NULL;
result = dissect_data_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
break;
case SCTP_INIT_CHUNK_ID:
- dissect_init_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_init_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
break;
case SCTP_INIT_ACK_CHUNK_ID:
- dissect_init_ack_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_init_ack_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
break;
case SCTP_SACK_CHUNK_ID:
- dissect_sack_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_sack_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
break;
case SCTP_HEARTBEAT_CHUNK_ID:
- dissect_heartbeat_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_heartbeat_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
break;
case SCTP_HEARTBEAT_ACK_CHUNK_ID:
- dissect_heartbeat_ack_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_heartbeat_ack_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
break;
case SCTP_ABORT_CHUNK_ID:
- dissect_abort_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_abort_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item, flags_item);
break;
case SCTP_SHUTDOWN_CHUNK_ID:
- dissect_shutdown_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_shutdown_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
break;
case SCTP_SHUTDOWN_ACK_CHUNK_ID:
- dissect_shutdown_ack_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_shutdown_ack_chunk(pinfo, chunk_tree, chunk_item);
break;
case SCTP_ERROR_CHUNK_ID:
- dissect_error_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_error_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
break;
case SCTP_COOKIE_ECHO_CHUNK_ID:
- dissect_cookie_echo_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_cookie_echo_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
break;
case SCTP_COOKIE_ACK_CHUNK_ID:
- dissect_cookie_ack_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_cookie_ack_chunk(pinfo, chunk_tree, chunk_item);
break;
case SCTP_ECNE_CHUNK_ID:
- dissect_ecne_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_ecne_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
break;
case SCTP_CWR_CHUNK_ID:
- dissect_cwr_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_cwr_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
break;
case SCTP_SHUTDOWN_COMPLETE_CHUNK_ID:
- dissect_shutdown_complete_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
- break;
+ dissect_shutdown_complete_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item, flags_item);
+ break;
+ case SCTP_FORWARD_TSN_CHUNK_ID:
+ dissect_forward_tsn_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ break;
+ case SCTP_ASCONF_ACK_CHUNK_ID:
+ dissect_asconf_ack_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ break;
+ case SCTP_ASCONF_CHUNK_ID:
+ dissect_asconf_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
+ break;
default:
- dissect_unknown_chunk(chunk_tvb, pinfo, tree, chunk_tree, chunk_item, flags_item);
+ dissect_unknown_chunk(chunk_tvb, pinfo, chunk_tree, chunk_item);
break;
};
return result;
}
static void
-dissect_sctp_chunks(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
- proto_item *sctp_item, proto_tree *sctp_tree)
+dissect_sctp_chunks(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_item *sctp_item, proto_tree *sctp_tree)
{
tvbuff_t *chunk_tvb;
guint16 length, padding_length, total_length;
offset = COMMON_HEADER_LENGTH;
sctp_item_length_set = FALSE;
- while(tvb_length_remaining(tvb, offset) > 0) {
+ while(tvb_reported_length_remaining(tvb, offset) > 0) {
/* extract the chunk length and compute number of padding bytes */
length = tvb_get_ntohs(tvb, offset + CHUNK_LENGTH_OFFSET);
padding_length = nr_of_padding_bytes(length);
sctp_item_length_set = TRUE;
offset += total_length;
last_offset = offset;
- if (tvb_length_remaining(tvb, offset) > 0) {
- sctp_item = proto_tree_add_item(tree, proto_sctp, tvb, offset, 0, FALSE);
+ if (tvb_reported_length_remaining(tvb, offset) > 0) {
+ sctp_item = proto_tree_add_item(tree, proto_sctp, tvb, offset, -1, FALSE);
sctp_tree = proto_item_add_subtree(sctp_item, ett_sctp);
sctp_item_length_set = FALSE;
}
dissect_sctp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint16 source_port, destination_port;
- guint32 verification_tag, checksum;
+ guint32 verification_tag, checksum, calculated_crc32c, calculated_adler32;
+ guint length;
+ gboolean crc32c_correct, adler32_correct;
proto_item *sctp_item;
proto_tree *sctp_tree;
pinfo->destport = destination_port;
/* make entry in the Protocol column on summary display */
- if (check_col(pinfo->fd, COL_PROTOCOL))
- col_set_str(pinfo->fd, COL_PROTOCOL, "SCTP");
+ if (check_col(pinfo->cinfo, COL_PROTOCOL))
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "SCTP");
/* Clear entries in Info column on summary display */
- if (check_col(pinfo->fd, COL_INFO))
- col_add_str(pinfo->fd, COL_INFO, "");
+ if (check_col(pinfo->cinfo, COL_INFO))
+ col_add_str(pinfo->cinfo, COL_INFO, "");
/* In the interest of speed, if "tree" is NULL, don't do any work not
necessary to generate protocol tree items. */
if (tree) {
/* create the sctp protocol tree */
- sctp_item = proto_tree_add_item(tree, proto_sctp, tvb, 0, 0, FALSE);
+ sctp_item = proto_tree_add_item(tree, proto_sctp, tvb, 0, -1, FALSE);
sctp_tree = proto_item_add_subtree(sctp_item, ett_sctp);
-
+
/* add the components of the common header to the protocol tree */
- proto_tree_add_uint(sctp_tree, hf_sctp_source_port,
- tvb, SOURCE_PORT_OFFSET, SOURCE_PORT_LENGTH,
- source_port);
- proto_tree_add_uint(sctp_tree, hf_sctp_destination_port,
- tvb, DESTINATION_PORT_OFFSET, DESTINATION_PORT_LENGTH,
- destination_port);
- proto_tree_add_uint(sctp_tree, hf_sctp_verification_tag,
- tvb, VERIFICATION_TAG_OFFSET, VERIFICATION_TAG_LENGTH,
- verification_tag);
- proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum,
- tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, checksum,
- "Adler-32 checksum: 0x%08x (%s)",
- checksum, sctp_checksum_state(tvb, checksum));
+ proto_tree_add_uint(sctp_tree, hf_sctp_source_port, tvb, SOURCE_PORT_OFFSET, SOURCE_PORT_LENGTH, source_port);
+ proto_tree_add_uint(sctp_tree, hf_sctp_destination_port, tvb, DESTINATION_PORT_OFFSET, DESTINATION_PORT_LENGTH, destination_port);
+ proto_tree_add_uint(sctp_tree, hf_sctp_verification_tag, tvb, VERIFICATION_TAG_OFFSET, VERIFICATION_TAG_LENGTH, verification_tag);
+ proto_tree_add_uint_hidden(sctp_tree, hf_sctp_port, tvb, SOURCE_PORT_OFFSET, SOURCE_PORT_LENGTH, source_port);
+ proto_tree_add_uint_hidden(sctp_tree, hf_sctp_port, tvb, DESTINATION_PORT_OFFSET, DESTINATION_PORT_LENGTH, destination_port);
+
+ length = tvb_length(tvb);
+ switch(sctp_checksum) {
+ case SCTP_CHECKSUM_NONE:
+ proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, checksum, "Checksum: 0x%08x (not verified)", checksum);
+ break;
+ case SCTP_CHECKSUM_ADLER32:
+ calculated_adler32 = sctp_adler32(tvb_get_ptr(tvb, 0, length), length);
+ adler32_correct = (checksum == calculated_adler32);
+ if (adler32_correct)
+ proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ checksum, "Checksum: 0x%08x (correct Adler32)", checksum);
+ else
+ proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ checksum, "Checksum: 0x%08x (incorrect Adler32, should be 0x%08x)", checksum, calculated_adler32);
+ proto_tree_add_boolean_hidden(sctp_tree, hf_sctp_checksum_bad, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, !(adler32_correct));
+ break;
+ case SCTP_CHECKSUM_CRC32C:
+ calculated_crc32c = sctp_crc32c(tvb_get_ptr(tvb, 0, length), length);
+ crc32c_correct = (checksum == calculated_crc32c);
+ if (crc32c_correct)
+ proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ checksum, "Checksum: 0x%08x (correct CRC32C)", checksum);
+ else
+ proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ checksum, "Checksum: 0x%08x (incorrect CRC32C, should be 0x%08x)", checksum, calculated_crc32c);
+ proto_tree_add_boolean_hidden(sctp_tree, hf_sctp_checksum_bad, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, !(crc32c_correct));
+ break;
+ case SCTP_CHECKSUM_AUTOMATIC:
+ calculated_adler32 = sctp_adler32(tvb_get_ptr(tvb, 0, length), length);
+ adler32_correct = (checksum == calculated_adler32);
+ calculated_crc32c = sctp_crc32c(tvb_get_ptr(tvb, 0, length), length);
+ crc32c_correct = (checksum == calculated_crc32c);
+ if ((adler32_correct) && !(crc32c_correct))
+ proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ checksum, "Checksum: 0x%08x (correct Adler32)", checksum);
+ else if (!(adler32_correct) && (crc32c_correct))
+ proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ checksum, "Checksum: 0x%08x (correct CRC32C)", checksum);
+ else if ((adler32_correct) && (crc32c_correct))
+ proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ checksum, "Checksum: 0x%08x (correct Adler32 and CRC32C)", checksum);
+ else
+ proto_tree_add_uint_format(sctp_tree, hf_sctp_checksum, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH,
+ checksum, "Checksum: 0x%08x (incorrect, should be 0x%08x (Adler32) or 0x%08x (CRC32C))",
+ checksum, calculated_adler32, calculated_crc32c);
+ proto_tree_add_boolean_hidden(sctp_tree, hf_sctp_checksum_bad, tvb, CHECKSUM_OFFSET, CHECKSUM_LENGTH, !(crc32c_correct || adler32_correct));
+ break;
+ }
} else {
sctp_tree = NULL;
sctp_item = NULL;
static hf_register_info hf[] = {
{ &hf_sctp_source_port,
{ "Source port", "sctp.srcport",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ "", HFILL }
},
{ &hf_sctp_destination_port,
{ "Destination port", "sctp.dstport",
- FT_UINT16, BASE_DEC, NULL, 0x0,
- "", HFILL }
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ "", HFILL }
+ },
+ { &hf_sctp_port,
+ { "Port", "sctp.port",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ "", HFILL }
},
{ &hf_sctp_verification_tag,
{ "Verification tag", "sctp.verfication_tag",
- FT_UINT32, BASE_HEX, NULL, 0x0,
- "", HFILL }
+ FT_UINT32, BASE_HEX, NULL, 0x0,
+ "", HFILL }
},
{ &hf_sctp_checksum,
- { "Adler-32 checksum", "sctp.checksum",
- FT_UINT32, BASE_HEX, NULL, 0x0,
- "", HFILL }
+ { "Checksum", "sctp.checksum",
+ FT_UINT32, BASE_HEX, NULL, 0x0,
+ "", HFILL }
+ },
+ { &hf_sctp_checksum_bad,
+ { "Bad checksum", "sctp.checksum_bad",
+ FT_BOOLEAN, BASE_NONE, NULL, 0x0,
+ "", HFILL }
},
{ &hf_sctp_chunk_type,
{ "Identifier", "sctp.chunk_type",
- FT_UINT8, BASE_DEC, NULL, 0x0,
+ FT_UINT8, BASE_DEC, VALS(sctp_chunk_type_values), 0x0,
"", HFILL }
},
{ &hf_sctp_chunk_flags,
"", HFILL }
},
{&hf_sctp_data_chunk_payload_proto_id,
- { "Payload Protocol identifier", "sctp.payload_proto_id",
- FT_UINT32, BASE_HEX, NULL, 0x0,
+ { "Payload protocol identifier", "sctp.payload_proto_id",
+ FT_UINT32, BASE_DEC, VALS(sctp_payload_proto_id_values), 0x0,
"", HFILL }
},
{&hf_sctp_data_chunk_e_bit,
"", HFILL }
},
{&hf_sctp_shutdown_complete_chunk_t_bit,
- { "E-Bit", "sctp.shutdown_complete.t_bit",
+ { "T-Bit", "sctp.shutdown_complete.t_bit",
+ FT_BOOLEAN, 8, TFS(&sctp_shutdown_complete_chunk_t_bit_value), SCTP_SHUTDOWN_COMPLETE_CHUNK_T_BIT,
+ "", HFILL }
+ },
+ {&hf_sctp_abort_chunk_t_bit,
+ { "T-Bit", "sctp.abort.t_bit",
FT_BOOLEAN, 8, TFS(&sctp_shutdown_complete_chunk_t_bit_value), SCTP_SHUTDOWN_COMPLETE_CHUNK_T_BIT,
"", HFILL }
},
+ {&hf_sctp_forward_tsn_chunk_tsn,
+ { "New cumulative TSN", "sctp.forward_tsn.tsn",
+ FT_UINT32, BASE_DEC, NULL, 0x0,
+ "", HFILL }
+ },
+ {&hf_sctp_forward_tsn_chunk_sid,
+ { "Stream identifier", "sctp.forward_tsn.sid",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ "", HFILL }
+ },
+ {&hf_sctp_forward_tsn_chunk_ssn,
+ { "Stream sequence number", "sctp.forward_tsn.ssn",
+ FT_UINT16, BASE_DEC, NULL, 0x0,
+ "", HFILL }
+ },
{&hf_sctp_chunk_parameter_type,
{ "Parameter type", "sctp.parameter.type",
- FT_UINT16, BASE_HEX, NULL, 0x0,
+ FT_UINT16, BASE_HEX, VALS(sctp_parameter_identifier_values), 0x0,
"", HFILL }
},
{&hf_sctp_chunk_parameter_length,
FT_UINT16, BASE_DEC, NULL, 0x0,
"", HFILL }
},
+ {&hf_sctp_asconf_serial,
+ { "Serial Number", "sctp.asconf.serial_number",
+ FT_UINT32, BASE_HEX, NULL, 0x0,
+ "", HFILL }
+ },
+ {&hf_sctp_asconf_ack_serial,
+ { "Serial Number", "sctp.asconf_ack.serial_number",
+ FT_UINT32, BASE_HEX, NULL, 0x0,
+ "", HFILL }
+ },
+ {&hf_sctp_correlation_id,
+ { "Correlation_id", "sctp.correlation_id",
+ FT_UINT32, BASE_HEX, NULL, 0x0,
+ "", HFILL }
+ },
+ {&hf_sctp_adap_indication,
+ { "Indication", "sctp.adapation_layer_indication.indication",
+ FT_UINT32, BASE_HEX, NULL, 0x0,
+ "", HFILL }
+ },
{&hf_sctp_cause_code,
{ "Cause code", "sctp.cause.code",
- FT_UINT16, BASE_DEC, NULL, 0x0,
+ FT_UINT16, BASE_HEX, VALS(sctp_cause_code_values), 0x0,
"", HFILL }
},
{&hf_sctp_cause_length,
"", HFILL }
},
{&hf_sctp_cause_missing_parameter_type,
- { "Missing parameters type", "sctp.cause.missing_parameter_type",
- FT_UINT16, BASE_DEC, NULL, 0x0,
+ { "Missing parameter type", "sctp.cause.missing_parameter_type",
+ FT_UINT16, BASE_HEX, VALS(sctp_parameter_identifier_values), 0x0,
"", HFILL }
},
{&hf_sctp_cause_measure_of_staleness,
&ett_sctp_chunk_parameter,
&ett_sctp_chunk_cause,
&ett_sctp_data_chunk_flags,
+ &ett_sctp_shutdown_complete_chunk_flags,
+ &ett_sctp_abort_chunk_flags,
&ett_sctp_sack_chunk_gap_block,
&ett_sctp_supported_address_types_parameter,
- &ett_sctp_unrecognized_parameter_parameter
+ &ett_sctp_unrecognized_parameter_parameter,
};
+ static enum_val_t sctp_checksum_options[] = {
+ { "None", SCTP_CHECKSUM_NONE },
+ { "Adler 32", SCTP_CHECKSUM_ADLER32 },
+ { "CRC 32c", SCTP_CHECKSUM_CRC32C },
+ { "Automatic", SCTP_CHECKSUM_AUTOMATIC},
+ { NULL, 0 }
+ };
+
/* Register the protocol name and description */
- proto_sctp = proto_register_protocol("Stream Control Transmission Protocol",
- "SCTP", "sctp");
-
+ proto_sctp = proto_register_protocol("Stream Control Transmission Protocol", "SCTP", "sctp");
+ sctp_module = prefs_register_protocol(proto_sctp, NULL);
+ prefs_register_enum_preference(sctp_module, "checksum",
+ "Checksum type",
+ "The type of checksum used in SCTP packets",
+ &sctp_checksum, sctp_checksum_options, FALSE);
+
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_sctp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
/* subdissector code */
- sctp_port_dissector_table = register_dissector_table("sctp.port");
- sctp_ppi_dissector_table = register_dissector_table("sctp.ppi");
+ sctp_port_dissector_table = register_dissector_table("sctp.port", "SCTP port", FT_UINT16, BASE_DEC);
+ sctp_ppi_dissector_table = register_dissector_table("sctp.ppi", "SCTP payload protocol identifier", FT_UINT32, BASE_HEX);
-};
+}
void
proto_reg_handoff_sctp(void)
{
- dissector_add("ip.proto", IP_PROTO_SCTP, dissect_sctp, proto_sctp);
+ dissector_handle_t sctp_handle;
+
+ data_handle = find_dissector("data");
+ sctp_handle = create_dissector_handle(dissect_sctp, proto_sctp);
+ dissector_add("ip.proto", IP_PROTO_SCTP, sctp_handle);
}
git.samba.org / obnox / wireshark / wip.git / blobdiff