forked from osmocom/wireshark
a9dd765d47
svn path=/trunk/; revision=53569
189 lines
7.8 KiB
C
189 lines
7.8 KiB
C
/* packet_info.h
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* Definitions for packet info structures and routines
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __PACKET_INFO_H__
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#define __PACKET_INFO_H__
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#include "frame_data.h"
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#include "tvbuff.h"
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#include "address.h"
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/** @file
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* Dissected packet data and metadata.
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*/
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/** @defgroup packetinfo Packet Data and Metadata
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*
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* @{
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*/
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/* Also defined in wiretap/wtap.h */
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#define P2P_DIR_UNKNOWN -1
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#define P2P_DIR_SENT 0
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#define P2P_DIR_RECV 1
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/* Link direction */
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#define LINK_DIR_UNKNOWN -1
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#define P2P_DIR_UL 0
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#define P2P_DIR_DL 1
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typedef struct _packet_info {
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const char *current_proto; /**< name of protocol currently being dissected */
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column_info *cinfo; /**< Column formatting information */
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frame_data *fd;
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union wtap_pseudo_header *pseudo_header;
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struct wtap_pkthdr *phdr;
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GSList *data_src; /**< Frame data sources */
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address dl_src; /**< link-layer source address */
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address dl_dst; /**< link-layer destination address */
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address net_src; /**< network-layer source address */
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address net_dst; /**< network-layer destination address */
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address src; /**< source address (net if present, DL otherwise )*/
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address dst; /**< destination address (net if present, DL otherwise )*/
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guint32 ipproto; /**< IP protocol, if this is an IP packet */
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circuit_type ctype; /**< type of circuit, for protocols with a VC identifier */
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guint32 circuit_id; /**< circuit ID, for protocols with a VC identifier */
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const char *noreassembly_reason; /**< reason why reassembly wasn't done, if any */
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gboolean fragmented; /**< TRUE if the protocol is only a fragment */
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struct {
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guint32 in_error_pkt:1; /**< TRUE if we're inside an {ICMP,CLNP,...} error packet */
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guint32 in_gre_pkt:1; /**< TRUE if we're encapsulated inside a GRE packet */
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} flags;
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port_type ptype; /**< type of the following two port numbers */
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guint32 srcport; /**< source port */
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guint32 destport; /**< destination port */
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guint32 match_uint; /**< matched uint for calling subdissector from table */
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const char *match_string; /**< matched string for calling subdissector from table */
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guint16 can_desegment; /**< >0 if this segment could be desegmented.
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A dissector that can offer this API (e.g.
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TCP) sets can_desegment=2, then
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can_desegment is decremented by 1 each time
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we pass to the next subdissector. Thus only
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the dissector immediately above the
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protocol which sets the flag can use it*/
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guint16 saved_can_desegment; /**< Value of can_desegment before current
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dissector was called. Supplied so that
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dissectors for proxy protocols such as
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SOCKS can restore it, allowing the
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dissectors that they call to use the
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TCP dissector's desegmentation (SOCKS
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just retransmits TCP segments once it's
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finished setting things up, so the TCP
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desegmentor can desegment its payload). */
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int desegment_offset; /**< offset to stuff needing desegmentation */
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#define DESEGMENT_ONE_MORE_SEGMENT 0x0fffffff
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#define DESEGMENT_UNTIL_FIN 0x0ffffffe
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guint32 desegment_len; /**< requested desegmentation additional length
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or
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DESEGMENT_ONE_MORE_SEGMENT:
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Desegment one more full segment
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(warning! only partially implemented)
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DESEGMENT_UNTIL_FIN:
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Desgment all data for this tcp session
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until the FIN segment.
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*/
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guint16 want_pdu_tracking; /**< >0 if the subdissector has specified
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a value in 'bytes_until_next_pdu'.
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When a dissector detects that the next PDU
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will start beyond the start of the next
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segment, it can set this value to 2
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and 'bytes_until_next_pdu' to the number of
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bytes beyond the next segment where the
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next PDU starts.
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If the protocol dissector below this
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one is capable of PDU tracking it can
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use this hint to detect PDUs that starts
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unaligned to the segment boundaries.
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The TCP dissector is using this hint from
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(some) protocols to detect when a new PDU
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starts in the middle of a tcp segment.
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There is intelligence in the glue between
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dissector layers to make sure that this
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request is only passed down to the protocol
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immediately below the current one and not
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any further.
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*/
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guint32 bytes_until_next_pdu;
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int p2p_dir; /**< Packet was captured as an
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outbound (P2P_DIR_SENT)
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inbound (P2P_DIR_RECV)
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unknown (P2P_DIR_UNKNOWN) */
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/**< Extra data for handling of decryption of GSSAPI wrapped tvbuffs.
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Caller sets decrypt_gssapi_tvb if this service is requested.
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If gssapi_encrypted_tvb is NULL, then the rest of the tvb data following
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the gssapi blob itself is decrypted othervise the gssapi_encrypted_tvb
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tvb will be decrypted (DCERPC has the data before the gssapi blob)
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If, on return, gssapi_data_encrypted is FALSE, the wrapped tvbuff
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was signed (i.e., an encrypted signature was present, to check
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whether the data was modified by a man in the middle) but not sealed
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(i.e., the data itself wasn't encrypted).
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*/
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#define DECRYPT_GSSAPI_NORMAL 1
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#define DECRYPT_GSSAPI_DCE 2
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guint16 decrypt_gssapi_tvb;
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tvbuff_t *gssapi_wrap_tvb;
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tvbuff_t *gssapi_encrypted_tvb;
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tvbuff_t *gssapi_decrypted_tvb;
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gboolean gssapi_data_encrypted;
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void *private_data; /**< pointer to data passed from one dissector to another */
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GHashTable *private_table; /**< a hash table passed from one dissector to another */
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wmem_list_t *layers; /**< layers of each protocol */
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guint8 curr_layer_num; /**< The current "depth" or layer number in the current frame */
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guint16 link_number;
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guint8 annex_a_used; /**< used in packet-mtp2.c
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* defined in wtap.h
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* MTP2_ANNEX_A_NOT_USED 0
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* MTP2_ANNEX_A_USED 1
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* MTP2_ANNEX_A_USED_UNKNOWN 2
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*/
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guint16 profinet_type; /**< the type of PROFINET packet (0: not a PROFINET packet) */
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struct _sccp_msg_info_t* sccp_info;
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guint16 clnp_srcref; /**< clnp/cotp source reference (can't use srcport, this would confuse tpkt) */
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guint16 clnp_dstref; /**< clnp/cotp destination reference (can't use dstport, this would confuse tpkt) */
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int link_dir; /**< 3GPP messages are sometime different UP link(UL) or Downlink(DL) */
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GSList* proto_data; /**< Per packet proto data */
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GSList* dependent_frames; /**< A list of frames which this one depends on */
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GSList* frame_end_routines;
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wmem_allocator_t *pool; /**< Memory pool scoped to the pinfo struct */
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struct epan_session *epan;
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nstime_t rel_ts; /**< Relative timestamp (yes, it can be negative) */
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const gchar *pkt_comment; /**< NULL if not available */
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} packet_info;
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/** @} */
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#endif /* __PACKET_INFO_H__ */
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