/builds/wireshark/wireshark/epan/dissectors/packet-tcpcl.c

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/* packet-tcpcl.c

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* References:

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* RFC 7242: https://tools.ietf.org/html/rfc7242

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* RFC 9174: https://www.rfc-editor.org/rfc/rfc9174.html

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*

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* Approved for Public Release; Distribution Unlimited.

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* Tracking Number 07-0090.

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*

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* The US Government will not be charged any license fee and/or royalties

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* related to this software. Neither name of The MITRE Corporation; nor the

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* names of its contributors may be used to endorse or promote products

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* derived from this software without specific prior written permission.

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*

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* Wireshark - Network traffic analyzer

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* By Gerald Combs <[email protected]>

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*

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

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*/

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/*

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* Modifications were made to this file under designation MFS-33289-1 and

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*

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* Released under the GNU GPL with NASA legal approval granted 2016-06-10.

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*

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* The subject software is provided "AS IS" WITHOUT ANY WARRANTY of any kind,

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* either expressed, implied or statutory and this agreement does not,

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* in any manner, constitute an endorsement by government agency of any

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* results, designs or products resulting from use of the subject software.

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* See the Agreement for the specific language governing permissions and

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* limitations.

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*/

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#include "config.h"

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#include <inttypes.h>

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#include <epan/packet.h>

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#include <epan/reassemble.h>

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#include <epan/expert.h>

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#include <epan/tfs.h>

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#include <epan/tvbuff-int.h>

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#include <epan/exceptions.h>

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#include <wsutil/array.h>

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#include "packet-tls-utils.h"

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#include "packet-tcp.h"

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#include "packet-ber.h"

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#include "packet-bpv6.h"

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#include "packet-tcpcl.h"

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void proto_register_tcpcl(void);

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void proto_reg_handoff_tcpcl(void);

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/// Contact header magic bytes

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static const uint8_t magic[] = {'d', 't', 'n', '!'};

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/// Minimum size of contact header for any version

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static const unsigned minimum_chdr_size = 6;

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/// Options for missing contact header handling

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enum AllowContactHeaderMissing {

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CHDRMSN_DISABLE,

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CHDRMSN_V3FIRST,

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CHDRMSN_V3ONLY,

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CHDRMSN_V4FIRST,

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CHDRMSN_V4ONLY,

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};

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static const enum_val_t chdr_missing_choices[] = {

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{"disabled", "Disabled", CHDRMSN_DISABLE},

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{"v4first", "Try TCPCLv4 first", CHDRMSN_V4FIRST},

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{"v4only", "Only TCPCLv4", CHDRMSN_V4ONLY},

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{"v3first", "Try TCPCLv3 first", CHDRMSN_V3FIRST},

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{"v3only", "Only TCPCLv3", CHDRMSN_V3ONLY},

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{NULL((void*)0), NULL((void*)0), 0},

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};

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static int proto_tcpcl;

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static int proto_tcpcl_exts;

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/// Protocol column name

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static const char *const proto_name_tcpcl = "TCPCL";

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static int tcpcl_chdr_missing = CHDRMSN_V4FIRST;

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static bool_Bool tcpcl_desegment_transfer = true1;

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static bool_Bool tcpcl_analyze_sequence = true1;

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static bool_Bool tcpcl_decode_bundle = true1;

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/* For Reassembling TCP Convergence Layer segments */

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static reassembly_table xfer_reassembly_table;

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/// Dissector handles

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static dissector_handle_t tcpcl_handle;

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static dissector_handle_t tls_handle;

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static dissector_handle_t bundle_handle;

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/// Extension sub-dissectors

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static dissector_table_t sess_ext_dissectors;

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static dissector_table_t xfer_ext_dissectors;

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static const value_string v3_message_type_vals[] = {

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{((TCPCLV3_DATA_SEGMENT>>4) & 0x0F), "DATA_SEGMENT"},

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{((TCPCLV3_ACK_SEGMENT>>4) & 0x0F), "ACK_SEGMENT"},

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{((TCPCLV3_REFUSE_BUNDLE>>4) & 0x0F), "REFUSE_BUNDLE"},

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{((TCPCLV3_KEEP_ALIVE>>4) & 0x0F), "KEEPALIVE"},

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{((TCPCLV3_SHUTDOWN>>4) & 0x0F), "SHUTDOWN"},

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{((TCPCLV3_LENGTH>>4) & 0x0F), "LENGTH"},

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{0, NULL((void*)0)}

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};

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/* Refuse-Bundle Reason-Code Flags as per RFC-7242: Section-5.4 */

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static const value_string v3_refuse_reason_code[] = {

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{TCPCLV3_REFUSE_REASON_UNKNOWN, "Reason for refusal is unknown"},

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{TCPCLV3_REFUSE_REASON_RX_COMPLETE, "Complete Bundle Received"},

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{TCPCLV3_REFUSE_REASON_RX_EXHAUSTED, "Receiver's resources exhausted"},

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{TCPCLV3_REFUSE_REASON_RX_RETRANSMIT, "Receiver expects re-transmission of bundle"},

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{0, NULL((void*)0)}

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};

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static const value_string v4_message_type_vals[]={

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{TCPCLV4_MSGTYPE_SESS_INIT, "SESS_INIT"},

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{TCPCLV4_MSGTYPE_SESS_TERM, "SESS_TERM"},

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{TCPCLV4_MSGTYPE_MSG_REJECT, "MSG_REJECT"},

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{TCPCLV4_MSGTYPE_KEEPALIVE, "KEEPALIVE"},

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{TCPCLV4_MSGTYPE_XFER_SEGMENT, "XFER_SEGMENT"},

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{TCPCLV4_MSGTYPE_XFER_ACK, "XFER_ACK"},

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{TCPCLV4_MSGTYPE_XFER_REFUSE, "XFER_REFUSE"},

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{0, NULL((void*)0)},

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};

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static const value_string v4_sess_term_reason_vals[]={

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{0x00, "Unknown"},

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{0x01, "Idle timeout"},

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{0x02, "Version mismatch"},

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{0x03, "Busy"},

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{0x04, "Contact Failure"},

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{0x05, "Resource Exhaustion"},

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{0, NULL((void*)0)},

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};

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static const value_string v4_xfer_refuse_reason_vals[]={

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{0x00, "Unknown"},

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{0x01, "Completed"},

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{0x02, "No Resources"},

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{0x03, "Retransmit"},

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{0x04, "Not Acceptable"},

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{0x05, "Extension Failure"},

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{0, NULL((void*)0)},

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};

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static const value_string v4_msg_reject_reason_vals[]={

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{0x00, "reserved"},

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{0x01, "Message Type Unknown"},

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{0x02, "Message Unsupported"},

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{0x03, "Message Unexpected"},

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{0, NULL((void*)0)},

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};

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static int hf_chdr_tree;

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static int hf_chdr_magic;

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static int hf_chdr_version;

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static int hf_chdr_related;

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/* TCP Convergence Header Variables */

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static int hf_tcpclv3_mhdr;

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static int hf_tcpclv3_pkt_type;

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/* Refuse-Bundle reason code */

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static int hf_tcpclv3_refuse_reason_code;

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static int hf_tcpclv3_chdr_flags;

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static int hf_tcpclv3_chdr_keep_alive;

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static int hf_tcpclv3_chdr_flags_ack_req;

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static int hf_tcpclv3_chdr_flags_frag_enable;

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static int hf_tcpclv3_chdr_flags_nak;

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static int hf_tcpclv3_chdr_local_eid_length;

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static int hf_tcpclv3_chdr_local_eid;

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/* TCP Convergence Data Header Variables */

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static int hf_tcpclv3_data_procflags;

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static int hf_tcpclv3_data_procflags_start;

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static int hf_tcpclv3_data_procflags_end;

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static int hf_tcpclv3_xfer_id;

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static int hf_tcpclv3_data_segment_length;

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static int hf_tcpclv3_data_segment_data;

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/* TCP Convergence Ack Variables */

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static int hf_tcpclv3_ack_length;

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/* TCP Convergence Shutdown Header Variables */

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static int hf_tcpclv3_shutdown_flags;

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static int hf_tcpclv3_shutdown_flags_reason;

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static int hf_tcpclv3_shutdown_flags_delay;

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static int hf_tcpclv3_shutdown_reason;

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static int hf_tcpclv3_shutdown_delay;

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static int hf_tcpclv4_chdr_flags;

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static int hf_tcpclv4_chdr_flags_cantls;

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static int hf_tcpclv4_negotiate_use_tls;

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static int hf_tcpclv4_mhdr_tree;

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static int hf_tcpclv4_mhdr_type;

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static int hf_tcpclv4_sess_init_keepalive;

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static int hf_tcpclv4_sess_init_seg_mru;

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static int hf_tcpclv4_sess_init_xfer_mru;

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static int hf_tcpclv4_sess_init_nodeid_len;

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static int hf_tcpclv4_sess_init_nodeid_data;

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static int hf_tcpclv4_sess_init_extlist_len;

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static int hf_tcpclv4_sess_init_related;

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static int hf_tcpclv4_negotiate_keepalive;

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static int hf_tcpclv4_sess_term_flags;

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static int hf_tcpclv4_sess_term_flags_reply;

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static int hf_tcpclv4_sess_term_reason;

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static int hf_tcpclv4_sess_term_related;

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static int hf_tcpclv4_sessext_tree;

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static int hf_tcpclv4_sessext_flags;

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static int hf_tcpclv4_sessext_flags_crit;

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static int hf_tcpclv4_sessext_type;

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static int hf_tcpclv4_sessext_len;

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static int hf_tcpclv4_sessext_data;

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static int hf_tcpclv4_xferext_tree;

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static int hf_tcpclv4_xferext_flags;

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static int hf_tcpclv4_xferext_flags_crit;

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static int hf_tcpclv4_xferext_type;

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static int hf_tcpclv4_xferext_len;

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static int hf_tcpclv4_xferext_data;

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static int hf_tcpclv4_xfer_flags;

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static int hf_tcpclv4_xfer_flags_start;

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static int hf_tcpclv4_xfer_flags_end;

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static int hf_tcpclv4_xfer_id;

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static int hf_tcpclv4_xfer_total_len;

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static int hf_tcpclv4_xfer_segment_extlist_len;

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static int hf_tcpclv4_xfer_segment_data_len;

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static int hf_tcpclv4_xfer_segment_data;

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static int hf_tcpclv4_xfer_segment_seen_len;

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static int hf_tcpclv4_xfer_segment_related_start;

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static int hf_tcpclv4_xfer_segment_time_start;

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static int hf_tcpclv4_xfer_segment_related_ack;

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static int hf_tcpclv4_xfer_segment_time_diff;

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static int hf_tcpclv4_xfer_ack_ack_len;

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static int hf_tcpclv4_xfer_ack_related_start;

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static int hf_tcpclv4_xfer_ack_time_start;

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static int hf_tcpclv4_xfer_ack_related_seg;

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static int hf_tcpclv4_xfer_ack_time_diff;

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static int hf_tcpclv4_xfer_refuse_reason;

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static int hf_tcpclv4_xfer_refuse_related_seg;

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static int hf_tcpclv4_msg_reject_reason;

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static int hf_tcpclv4_msg_reject_head;

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static int hf_tcpclv4_xferext_transferlen_total_len;

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static int hf_othername_bundleeid;

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/*TCP Convergence Layer Reassembly boilerplate*/

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static int hf_xfer_fragments;

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static int hf_xfer_fragment;

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static int hf_xfer_fragment_overlap;

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static int hf_xfer_fragment_overlap_conflicts;

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static int hf_xfer_fragment_multiple_tails;

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static int hf_xfer_fragment_too_long_fragment;

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static int hf_xfer_fragment_error;

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static int hf_xfer_fragment_count;

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static int hf_xfer_reassembled_in;

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static int hf_xfer_reassembled_length;

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static int hf_xfer_reassembled_data;

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static hf_register_info hf_tcpcl[] = {

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{&hf_chdr_tree, {"Contact Header", "tcpcl.contact_hdr", FT_NONE, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

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{&hf_chdr_magic, {"Protocol Magic", "tcpcl.contact_hdr.magic", FT_BYTES, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

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{&hf_chdr_version, {"Version", "tcpcl.contact_hdr.version", FT_UINT8, BASE_DEC, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

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{&hf_chdr_related, {"Related Header", "tcpcl.contact_hdr.related", FT_FRAMENUM, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

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{&hf_tcpclv3_mhdr,

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{"TCPCLv3 Message", "tcpcl.mhdr",

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FT_NONE, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_pkt_type,

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{"Message Type", "tcpcl.pkt_type",

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FT_UINT8, BASE_DEC, VALS(v3_message_type_vals)((0 ? (const struct _value_string*)0 : ((v3_message_type_vals
)))), 0xF0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_refuse_reason_code,

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{"Reason-Code", "tcpcl.refuse.reason_code",

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FT_UINT8, BASE_DEC, VALS(v3_refuse_reason_code)((0 ? (const struct _value_string*)0 : ((v3_refuse_reason_code
)))), 0x0F, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_data_procflags,

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{"Data Flags", "tcpcl.data.proc.flag",

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FT_UINT8, BASE_HEX, NULL((void*)0), TCPCLV3_DATA_FLAGS, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_data_procflags_start,

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{"Segment contains start of bundle", "tcpcl.data.proc.start",

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FT_BOOLEAN, 8, TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset
)))), TCPCLV3_DATA_START_FLAG, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_data_procflags_end,

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{"Segment contains end of Bundle", "tcpcl.data.proc.end",

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FT_BOOLEAN, 8, TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset
)))), TCPCLV3_DATA_END_FLAG, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_xfer_id, {"Implied Transfer ID", "tcpcl.xfer_id", FT_UINT64, BASE_HEX, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

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{&hf_tcpclv3_data_segment_length,

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{"Segment Length", "tcpcl.data.length",

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FT_UINT64, BASE_DEC, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_data_segment_data,

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{"Segment Data", "tcpcl.data",

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FT_BYTES, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_shutdown_flags,

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{"TCP Convergence Shutdown Flags", "tcpcl.shutdown.flags",

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FT_UINT8, BASE_HEX, NULL((void*)0), TCPCLV3_SHUTDOWN_FLAGS, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_shutdown_flags_reason,

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{"Shutdown includes Reason Code", "tcpcl.shutdown.reason.flag",

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FT_BOOLEAN, 8, TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset
)))), TCPCLV3_SHUTDOWN_REASON, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_shutdown_flags_delay,

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{"Shutdown includes Reconnection Delay", "tcpcl.shutdown.delay.flag",

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FT_BOOLEAN, 8, TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset
)))), TCPCLV3_SHUTDOWN_DELAY, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_shutdown_reason,

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{"Shutdown Reason Code", "tcpcl.shutdown.reason",

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FT_UINT8, BASE_DEC, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_shutdown_delay,

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{"Shutdown Reconnection Delay", "tcpcl.shutdown.delay",

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FT_UINT16, BASE_DEC, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_ack_length,

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{"Ack Length", "tcpcl.ack.length",

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FT_UINT64, BASE_DEC, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_chdr_flags,

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{"Flags", "tcpcl.contact_hdr.flags",

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FT_UINT8, BASE_HEX, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_chdr_flags_ack_req,

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{"Bundle Acks Requested", "tcpcl.contact_hdr.flags.ackreq",

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FT_BOOLEAN, 8, TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset
)))), TCPCLV3_BUNDLE_ACK_FLAG, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_chdr_flags_frag_enable,

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{"Reactive Fragmentation Enabled", "tcpcl.contact_hdr.flags.fragen",

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FT_BOOLEAN, 8, TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset
)))), TCPCLV3_REACTIVE_FRAG_FLAG, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_chdr_flags_nak,

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{"Support Negative Acknowledgements", "tcpcl.contact_hdr.flags.nak",

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FT_BOOLEAN, 8, TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset
)))), TCPCLV3_CONNECTOR_RCVR_FLAG, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_chdr_keep_alive,

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{"Keep Alive", "tcpcl.contact_hdr.keep_alive",

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FT_UINT16, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_seconds)((0 ? (const struct unit_name_string*)0 : ((&units_seconds
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_chdr_local_eid,

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{"Local EID", "tcpcl.contact_hdr.local_eid",

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FT_STRING, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv3_chdr_local_eid_length,

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{"Local EID Length", "tcpcl.contact_hdr.local_eid_length",

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FT_UINT64, BASE_DEC, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}

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},

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{&hf_tcpclv4_chdr_flags, {"Contact Flags", "tcpcl.v4.chdr.flags", FT_UINT8, BASE_HEX, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

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{&hf_tcpclv4_chdr_flags_cantls, {"CAN_TLS", "tcpcl.v4.chdr.flags.can_tls", FT_BOOLEAN, 8, TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset
)))), TCPCLV4_CONTACT_FLAG_CANTLS, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

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// Contact negotiation results

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{&hf_tcpclv4_negotiate_use_tls, {"Negotiated Use TLS", "tcpcl.v4.negotiated.use_tls", FT_BOOLEAN, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

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{&hf_tcpclv4_mhdr_tree, {"TCPCLv4 Message", "tcpcl.v4.mhdr", FT_NONE, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

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{&hf_tcpclv4_mhdr_type, {"Message Type", "tcpcl.v4.mhdr.type", FT_UINT8, BASE_HEX, VALS(v4_message_type_vals)((0 ? (const struct _value_string*)0 : ((v4_message_type_vals
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

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// Session extension fields

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{&hf_tcpclv4_sessext_tree, {"Session Extension Item", "tcpcl.v4.sessext", FT_PROTOCOL, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

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{&hf_tcpclv4_sessext_flags, {"Item Flags", "tcpcl.v4.sessext.flags", FT_UINT8, BASE_HEX, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

376

{&hf_tcpclv4_sessext_flags_crit, {"CRITICAL", "tcpcl.v4.sessext.flags.critical", FT_BOOLEAN, 8, TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset
)))), TCPCLV4_EXTENSION_FLAG_CRITICAL, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

377

{&hf_tcpclv4_sessext_type, {"Item Type", "tcpcl.v4.sessext.type", FT_UINT16, BASE_HEX, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

378

{&hf_tcpclv4_sessext_len, {"Item Length", "tcpcl.v4.sessext.len", FT_UINT32, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_octet_octets)((0 ? (const struct unit_name_string*)0 : ((&units_octet_octets
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

379

{&hf_tcpclv4_sessext_data, {"Type-Specific Data", "tcpcl.v4.sessext.data", FT_NONE, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

380

381

// Transfer extension fields

382

{&hf_tcpclv4_xferext_tree, {"Transfer Extension Item", "tcpcl.v4.xferext", FT_PROTOCOL, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

383

{&hf_tcpclv4_xferext_flags, {"Item Flags", "tcpcl.v4.xferext.flags", FT_UINT8, BASE_HEX, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

384

{&hf_tcpclv4_xferext_flags_crit, {"CRITICAL", "tcpcl.v4.xferext.flags.critical", FT_BOOLEAN, 8, TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset
)))), TCPCLV4_EXTENSION_FLAG_CRITICAL, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

385

{&hf_tcpclv4_xferext_type, {"Item Type", "tcpcl.v4.xferext.type", FT_UINT16, BASE_HEX, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

386

{&hf_tcpclv4_xferext_len, {"Item Length", "tcpcl.v4.xferext.len", FT_UINT32, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_octet_octets)((0 ? (const struct unit_name_string*)0 : ((&units_octet_octets
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

387

{&hf_tcpclv4_xferext_data, {"Type-Specific Data", "tcpcl.v4.xferext.data", FT_NONE, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

388

389

// SESS_INIT fields

390

{&hf_tcpclv4_sess_init_keepalive, {"Keepalive Interval", "tcpcl.v4.sess_init.keepalive", FT_UINT16, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_seconds)((0 ? (const struct unit_name_string*)0 : ((&units_seconds
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

391

{&hf_tcpclv4_sess_init_seg_mru, {"Segment MRU", "tcpcl.v4.sess_init.seg_mru", FT_UINT64, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_octet_octets)((0 ? (const struct unit_name_string*)0 : ((&units_octet_octets
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

392

{&hf_tcpclv4_sess_init_xfer_mru, {"Transfer MRU", "tcpcl.v4.sess_init.xfer_mru", FT_UINT64, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_octet_octets)((0 ? (const struct unit_name_string*)0 : ((&units_octet_octets
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

393

{&hf_tcpclv4_sess_init_nodeid_len, {"Node ID Length", "tcpcl.v4.sess_init.nodeid_len", FT_UINT16, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_octet_octets)((0 ? (const struct unit_name_string*)0 : ((&units_octet_octets
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

394

{&hf_tcpclv4_sess_init_nodeid_data, {"Node ID Data (UTF8)", "tcpcl.v4.sess_init.nodeid_data", FT_STRING, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

395

{&hf_tcpclv4_sess_init_extlist_len, {"Extension Items Length", "tcpcl.v4.sess_init.extlist_len", FT_UINT32, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_octet_octets)((0 ? (const struct unit_name_string*)0 : ((&units_octet_octets
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

396

{&hf_tcpclv4_sess_init_related, {"Related SESS_INIT", "tcpcl.v4.sess_init.related", FT_FRAMENUM, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

397

// Session negotiation results

398

{&hf_tcpclv4_negotiate_keepalive, {"Negotiated Keepalive Interval", "tcpcl.v4.negotiated.keepalive", FT_UINT16, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_seconds)((0 ? (const struct unit_name_string*)0 : ((&units_seconds
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

399

// SESS_TERM fields

400

{&hf_tcpclv4_sess_term_flags, {"Flags", "tcpcl.v4.sess_term.flags", FT_UINT8, BASE_HEX, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

401

{&hf_tcpclv4_sess_term_flags_reply, {"REPLY", "tcpcl.v4.sess_term.flags.reply", FT_BOOLEAN, 8, TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset
)))), TCPCLV4_SESS_TERM_FLAG_REPLY, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

402

{&hf_tcpclv4_sess_term_reason, {"Reason", "tcpcl.v4.ses_term.reason", FT_UINT8, BASE_DEC, VALS(v4_sess_term_reason_vals)((0 ? (const struct _value_string*)0 : ((v4_sess_term_reason_vals
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

403

{&hf_tcpclv4_sess_term_related, {"Related SESS_TERM", "tcpcl.v4.ses_term.related", FT_FRAMENUM, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

404

405

// Common transfer fields

406

{&hf_tcpclv4_xfer_flags, {"Transfer Flags", "tcpcl.v4.xfer_flags", FT_UINT8, BASE_HEX, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

407

{&hf_tcpclv4_xfer_flags_start, {"START", "tcpcl.v4.xfer_flags.start", FT_BOOLEAN, 8, TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset
)))), TCPCLV4_TRANSFER_FLAG_START, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

408

{&hf_tcpclv4_xfer_flags_end, {"END", "tcpcl.v4.xfer_flags.end", FT_BOOLEAN, 8, TFS(&tfs_set_notset)((0 ? (const struct true_false_string*)0 : ((&tfs_set_notset
)))), TCPCLV4_TRANSFER_FLAG_END, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

409

{&hf_tcpclv4_xfer_id, {"Transfer ID", "tcpcl.v4.xfer_id", FT_UINT64, BASE_HEX, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

410

{&hf_tcpclv4_xfer_total_len, {"Expected Total Length", "tcpcl.v4.xfer.total_len", FT_UINT64, BASE_DEC, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

411

// XFER_SEGMENT fields

412

{&hf_tcpclv4_xfer_segment_extlist_len, {"Extension Items Length", "tcpcl.v4.xfer_segment.extlist_len", FT_UINT32, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_octet_octets)((0 ? (const struct unit_name_string*)0 : ((&units_octet_octets
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

413

{&hf_tcpclv4_xfer_segment_data_len, {"Segment Length", "tcpcl.v4.xfer_segment.data_len", FT_UINT64, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_octet_octets)((0 ? (const struct unit_name_string*)0 : ((&units_octet_octets
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

414

{&hf_tcpclv4_xfer_segment_data, {"Segment Data", "tcpcl.v4.xfer_segment.data", FT_BYTES, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

415

{&hf_tcpclv4_xfer_segment_seen_len, {"Seen Length", "tcpcl.v4.xfer_segment.seen_len", FT_UINT64, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_octet_octets)((0 ? (const struct unit_name_string*)0 : ((&units_octet_octets
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

416

{&hf_tcpclv4_xfer_segment_related_start, {"Related XFER_SEGMENT start", "tcpcl.v4.xfer_segment.related_start", FT_FRAMENUM, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

417

{&hf_tcpclv4_xfer_segment_time_start, {"Time since transfer Start", "tcpcl.v4.xfer_segment.time_since_start", FT_RELATIVE_TIME, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

418

{&hf_tcpclv4_xfer_segment_related_ack, {"Related XFER_ACK", "tcpcl.v4.xfer_segment.related_ack", FT_FRAMENUM, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

419

{&hf_tcpclv4_xfer_segment_time_diff, {"Acknowledgment Time", "tcpcl.v4.xfer_segment.time_diff", FT_RELATIVE_TIME, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

420

// XFER_ACK fields

421

{&hf_tcpclv4_xfer_ack_ack_len, {"Acknowledged Length", "tcpcl.v4.xfer_ack.ack_len", FT_UINT64, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_octet_octets)((0 ? (const struct unit_name_string*)0 : ((&units_octet_octets
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

422

{&hf_tcpclv4_xfer_ack_related_start, {"Related XFER_SEGMENT start", "tcpcl.v4.xfer_ack.related_start", FT_FRAMENUM, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

423

{&hf_tcpclv4_xfer_ack_time_start, {"Time since transfer Start", "tcpcl.v4.xfer_ack.time_since_start", FT_RELATIVE_TIME, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

424

{&hf_tcpclv4_xfer_ack_related_seg, {"Related XFER_SEGMENT", "tcpcl.v4.xfer_ack.related_seg", FT_FRAMENUM, BASE_NONE, FRAMENUM_TYPE(FT_FRAMENUM_ACK)((gpointer) (glong) (FT_FRAMENUM_ACK)), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

425

{&hf_tcpclv4_xfer_ack_time_diff, {"Acknowledgment Time", "tcpcl.v4.xfer_ack.time_diff", FT_RELATIVE_TIME, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

426

// XFER_REFUSE fields

427

{&hf_tcpclv4_xfer_refuse_reason, {"Reason", "tcpcl.v4.xfer_refuse.reason", FT_UINT8, BASE_DEC, VALS(v4_xfer_refuse_reason_vals)((0 ? (const struct _value_string*)0 : ((v4_xfer_refuse_reason_vals
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

428

{&hf_tcpclv4_xfer_refuse_related_seg, {"Related XFER_SEGMENT", "tcpcl.v4.xfer_refuse.related_seg", FT_FRAMENUM, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

429

// MSG_REJECT fields

430

{&hf_tcpclv4_msg_reject_reason, {"Reason", "tcpcl.v4.msg_reject.reason", FT_UINT8, BASE_DEC, VALS(v4_msg_reject_reason_vals)((0 ? (const struct _value_string*)0 : ((v4_msg_reject_reason_vals
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

431

{&hf_tcpclv4_msg_reject_head, {"Rejected Type", "tcpcl.v4.msg_reject.head", FT_UINT8, BASE_HEX, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

432

433

// Specific extensions

434

{&hf_tcpclv4_xferext_transferlen_total_len, {"Total Length", "tcpcl.v4.xferext.transfer_length.total_len", FT_UINT64, BASE_DEC|BASE_UNIT_STRING0x00001000, UNS(&units_octet_octets)((0 ? (const struct unit_name_string*)0 : ((&units_octet_octets
)))), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

435

// PKIX other name form

436

{&hf_othername_bundleeid, {"BundleEID", "tcpcl.v4.BundleEID", FT_STRING, BASE_NONE, NULL((void*)0), 0x0, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0)}},

437

438

{&hf_xfer_fragments,

439

{"Transfer fragments", "tcpcl.xfer.fragments",

440

FT_NONE, BASE_NONE, NULL((void*)0), 0x00, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) } },

441

{&hf_xfer_fragment,

442

{"Transfer fragment", "tcpcl.xfer.fragment",

443

FT_FRAMENUM, BASE_NONE, NULL((void*)0), 0x00, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) } },

444

{&hf_xfer_fragment_overlap,

445

{"Transfer fragment overlap", "tcpcl.xfer.fragment.overlap",

446

FT_BOOLEAN, BASE_NONE, NULL((void*)0), 0x00, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) } },

447

{&hf_xfer_fragment_overlap_conflicts,

448

{"Transfer fragment overlapping with conflicting data",

449

"tcpcl.xfer.fragment.overlap.conflicts",

450

FT_BOOLEAN, BASE_NONE, NULL((void*)0), 0x00, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) } },

451

{&hf_xfer_fragment_multiple_tails,

452

{"Message has multiple tail fragments",

453

"tcpcl.xfer.fragment.multiple_tails",

454

FT_BOOLEAN, BASE_NONE, NULL((void*)0), 0x00, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) } },

455

{&hf_xfer_fragment_too_long_fragment,

456

{"Transfer fragment too long", "tcpcl.xfer.fragment.too_long_fragment",

457

FT_BOOLEAN, BASE_NONE, NULL((void*)0), 0x00, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) } },

458

{&hf_xfer_fragment_error,

459

{"Transfer defragmentation error", "tcpcl.xfer.fragment.error",

460

FT_FRAMENUM, BASE_NONE, NULL((void*)0), 0x00, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) } },

461

{&hf_xfer_fragment_count,

462

{"Transfer fragment count", "tcpcl.xfer.fragment.count",

463

FT_UINT32, BASE_DEC, NULL((void*)0), 0x00, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) } },

464

{&hf_xfer_reassembled_in,

465

{"Reassembled in", "tcpcl.xfer.reassembled.in",

466

FT_FRAMENUM, BASE_NONE, NULL((void*)0), 0x00, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) } },

467

{&hf_xfer_reassembled_length,

468

{"Reassembled length", "tcpcl.xfer.reassembled.length",

469

FT_UINT32, BASE_DEC, NULL((void*)0), 0x00, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) } },

470

{&hf_xfer_reassembled_data,

471

{"Reassembled data", "tcpcl.xfer.reassembled.data",

472

FT_BYTES, BASE_NONE, NULL((void*)0), 0x00, NULL((void*)0), HFILL-1, 0, HF_REF_TYPE_NONE, -1, ((void*)0) } },

473

474

};

475

476

static int *const v3_chdr_flags[] = {

477

&hf_tcpclv3_chdr_flags_ack_req,

478

&hf_tcpclv3_chdr_flags_frag_enable,

479

&hf_tcpclv3_chdr_flags_nak,

480

NULL((void*)0)

481

};

482

483

static int *const v3_data_procflags[] = {

484

&hf_tcpclv3_data_procflags_start,

485

&hf_tcpclv3_data_procflags_end,

486

NULL((void*)0)

487

};

488

static int *const v4_chdr_flags[] = {

489

&hf_tcpclv4_chdr_flags_cantls,

490

NULL((void*)0)

491

};

492

static int *const v4_sess_term_flags[] = {

493

&hf_tcpclv4_sess_term_flags_reply,

494

NULL((void*)0)

495

};

496

static int *const v4_xfer_flags[] = {

497

&hf_tcpclv4_xfer_flags_start,

498

&hf_tcpclv4_xfer_flags_end,

499

NULL((void*)0)

500

};

501

static int *const v4_sessext_flags[] = {

502

&hf_tcpclv4_sessext_flags_crit,

503

NULL((void*)0)

504

};

505

static int *const v4_xferext_flags[] = {

506

&hf_tcpclv4_xferext_flags_crit,

507

NULL((void*)0)

508

};

509

510

/* Tree Node Variables */

511

static int ett_proto_tcpcl;

512

static int ett_chdr;

513

static int ett_tcpclv3_chdr_flags;

514

static int ett_tcpclv3_mhdr;

515

static int ett_tcpclv3_data_procflags;

516

static int ett_tcpclv3_shutdown_flags;

517

static int ett_xfer_fragment;

518

static int ett_xfer_fragments;

519

static int ett_tcpclv4_chdr_flags;

520

static int ett_tcpclv4_mhdr;

521

static int ett_tcpclv4_sess_term_flags;

522

static int ett_tcpclv4_xfer_flags;

523

static int ett_tcpclv4_sessext;

524

static int ett_tcpclv4_sessext_flags;

525

static int ett_tcpclv4_sessext_data;

526

static int ett_tcpclv4_xferext;

527

static int ett_tcpclv4_xferext_flags;

528

static int ett_tcpclv4_xferext_data;

529

530

static int *ett[] = {

531

&ett_proto_tcpcl,

532

&ett_chdr,

533

&ett_tcpclv3_chdr_flags,

534

&ett_tcpclv3_mhdr,

535

&ett_tcpclv3_data_procflags,

536

&ett_tcpclv3_shutdown_flags,

537

&ett_tcpclv4_chdr_flags,

538

&ett_tcpclv4_mhdr,

539

&ett_tcpclv4_sess_term_flags,

540

&ett_tcpclv4_xfer_flags,

541

&ett_tcpclv4_sessext,

542

&ett_tcpclv4_sessext_flags,

543

&ett_tcpclv4_sessext_data,

544

&ett_tcpclv4_xferext,

545

&ett_tcpclv4_xferext_flags,

546

&ett_tcpclv4_xferext_data,

547

&ett_xfer_fragment,

548

&ett_xfer_fragments,

549

};

550

551

static expert_field ei_invalid_magic;

552

static expert_field ei_invalid_version;

553

static expert_field ei_mismatch_version;

554

static expert_field ei_chdr_duplicate;

555

static expert_field ei_length_clamped;

556

static expert_field ei_chdr_missing;

557

558

static expert_field ei_tcpclv3_eid_length;

559

static expert_field ei_tcpclv3_invalid_msg_type;

560

static expert_field ei_tcpclv3_data_flags;

561

static expert_field ei_tcpclv3_segment_length;

562

static expert_field ei_tcpclv3_ack_length;

563

564

static expert_field ei_tcpclv4_invalid_msg_type;

565

static expert_field ei_tcpclv4_invalid_sessext_type;

566

static expert_field ei_tcpclv4_invalid_xferext_type;

567

static expert_field ei_tcpclv4_extitem_critical;

568

static expert_field ei_tcpclv4_sess_init_missing;

569

static expert_field ei_tcpclv4_sess_init_duplicate;

570

static expert_field ei_tcpclv4_sess_term_duplicate;

571

static expert_field ei_tcpclv4_sess_term_reply_flag;

572

static expert_field ei_tcpclv4_xfer_seg_over_seg_mru;

573

static expert_field ei_tcpclv4_xfer_seg_missing_start;

574

static expert_field ei_tcpclv4_xfer_seg_duplicate_start;

575

static expert_field ei_tcpclv4_xfer_seg_missing_end;

576

static expert_field ei_tcpclv4_xfer_seg_duplicate_end;

577

static expert_field ei_tcpclv4_xfer_seg_no_relation;

578

static expert_field ei_xfer_seg_over_total_len;

579

static expert_field ei_xfer_mismatch_total_len;

580

static expert_field ei_xfer_ack_mismatch_flags;

581

static expert_field ei_xfer_ack_no_relation;

582

static expert_field ei_tcpclv4_xfer_refuse_no_transfer;

583

static expert_field ei_tcpclv4_xferload_over_xfer_mru;

584

585

static ei_register_info ei_tcpcl[] = {

586

{&ei_invalid_magic, { "tcpcl.invalid_contact_magic", PI_PROTOCOL0x09000000, PI_ERROR0x00800000, "Magic string is invalid", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

587

{&ei_invalid_version, { "tcpcl.invalid_contact_version", PI_PROTOCOL0x09000000, PI_ERROR0x00800000, "Protocol version not handled", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

588

{&ei_mismatch_version, { "tcpcl.mismatch_contact_version", PI_PROTOCOL0x09000000, PI_ERROR0x00800000, "Protocol version mismatch", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

589

{&ei_chdr_duplicate, { "tcpcl.contact_duplicate", PI_SEQUENCE0x02000000, PI_ERROR0x00800000, "Duplicate Contact Header", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

590

{&ei_length_clamped, { "tcpcl.length_clamped", PI_UNDECODED0x05000000, PI_ERROR0x00800000, "Length too large for Wireshark to handle", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

591

{&ei_chdr_missing, { "tcpcl.contact_missing", PI_ASSUMPTION0x0d000000, PI_NOTE0x00400000, "Contact Header is missing, TCPCL version is implied", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

592

593

{&ei_tcpclv3_eid_length, { "tcpcl.eid_length_invalid", PI_PROTOCOL0x09000000, PI_ERROR0x00800000, "Invalid EID Length", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}} }},

594

{&ei_tcpclv3_invalid_msg_type, { "tcpcl.unknown_message_type", PI_UNDECODED0x05000000, PI_ERROR0x00800000, "Message type is unknown", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

595

{&ei_tcpclv3_data_flags, { "tcpcl.data.flags.invalid", PI_PROTOCOL0x09000000, PI_WARN0x00600000, "Invalid TCP CL Data Segment Flags", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}} }},

596

{&ei_tcpclv3_segment_length, { "tcpcl.data.length.invalid", PI_PROTOCOL0x09000000, PI_ERROR0x00800000, "Invalid Data Length", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}} }},

597

{&ei_tcpclv3_ack_length, { "tcpcl.ack.length.error", PI_PROTOCOL0x09000000, PI_WARN0x00600000, "Ack Length: Error", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}} }},

598

599

{&ei_tcpclv4_invalid_msg_type, { "tcpcl.v4.unknown_message_type", PI_UNDECODED0x05000000, PI_ERROR0x00800000, "Message type is unknown", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

600

{&ei_tcpclv4_invalid_sessext_type, { "tcpcl.v4.unknown_sessext_type", PI_UNDECODED0x05000000, PI_WARN0x00600000, "Session Extension type is unknown", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

601

{&ei_tcpclv4_invalid_xferext_type, { "tcpcl.v4.unknown_xferext_type", PI_UNDECODED0x05000000, PI_WARN0x00600000, "Transfer Extension type is unknown", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

602

{&ei_tcpclv4_extitem_critical, { "tcpcl.v4.extitem_critical", PI_REQUEST_CODE0x04000000, PI_CHAT0x00200000, "Extension Item is critical", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

603

{&ei_tcpclv4_sess_init_missing, { "tcpcl.v4.sess_init_missing", PI_SEQUENCE0x02000000, PI_ERROR0x00800000, "Expected SESS_INIT message first", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

604

{&ei_tcpclv4_sess_init_duplicate, { "tcpcl.v4.sess_init_duplicate", PI_SEQUENCE0x02000000, PI_ERROR0x00800000, "Duplicate SESS_INIT message", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

605

{&ei_tcpclv4_sess_term_duplicate, { "tcpcl.v4.sess_term_duplicate", PI_SEQUENCE0x02000000, PI_ERROR0x00800000, "Duplicate SESS_TERM message", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

606

{&ei_tcpclv4_sess_term_reply_flag, { "tcpcl.v4.sess_term_reply_flag", PI_SEQUENCE0x02000000, PI_ERROR0x00800000, "Reply SESS_TERM missing flag", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

607

{&ei_tcpclv4_xfer_seg_over_seg_mru, { "tcpcl.v4.xfer_seg_over_seg_mru", PI_PROTOCOL0x09000000, PI_WARN0x00600000, "Segment data size larger than peer MRU", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

608

{&ei_tcpclv4_xfer_seg_missing_start, { "tcpcl.v4.xfer_seg_missing_start", PI_SEQUENCE0x02000000, PI_ERROR0x00800000, "First XFER_SEGMENT is missing START flag", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

609

{&ei_tcpclv4_xfer_seg_duplicate_start, { "tcpcl.v4.xfer_seg_duplicate_start", PI_SEQUENCE0x02000000, PI_ERROR0x00800000, "Non-first XFER_SEGMENT has START flag", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

610

{&ei_tcpclv4_xfer_seg_missing_end, { "tcpcl.v4.xfer_seg_missing_end", PI_SEQUENCE0x02000000, PI_ERROR0x00800000, "Last XFER_SEGMENT is missing END flag", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

611

{&ei_tcpclv4_xfer_seg_duplicate_end, { "tcpcl.v4.xfer_seg_duplicate_end", PI_SEQUENCE0x02000000, PI_ERROR0x00800000, "Non-last XFER_SEGMENT has END flag", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

612

{&ei_tcpclv4_xfer_seg_no_relation, { "tcpcl.v4.xfer_seg_no_relation", PI_SEQUENCE0x02000000, PI_NOTE0x00400000, "XFER_SEGMENT has no related XFER_ACK", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

613

{&ei_tcpclv4_xfer_refuse_no_transfer, { "tcpcl.v4.xfer_refuse_no_transfer", PI_SEQUENCE0x02000000, PI_NOTE0x00400000, "XFER_REFUSE has no related XFER_SEGMENT(s)", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

614

{&ei_tcpclv4_xferload_over_xfer_mru, { "tcpcl.v4.xferload_over_xfer_mru", PI_SEQUENCE0x02000000, PI_NOTE0x00400000, "Transfer larger than peer MRU", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

615

{&ei_xfer_seg_over_total_len, { "tcpcl.xfer_seg_over_total_len", PI_SEQUENCE0x02000000, PI_ERROR0x00800000, "XFER_SEGMENT has accumulated length beyond the Transfer Length extension", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

616

{&ei_xfer_mismatch_total_len, { "tcpcl.xfer_mismatch_total_len", PI_SEQUENCE0x02000000, PI_ERROR0x00800000, "Transfer has total length different than the Transfer Length extension", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

617

{&ei_xfer_ack_mismatch_flags, { "tcpcl.xfer_ack_mismatch_flags", PI_SEQUENCE0x02000000, PI_ERROR0x00800000, "XFER_ACK does not have flags matching XFER_SEGMENT", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

618

{&ei_xfer_ack_no_relation, { "tcpcl.xfer_ack_no_relation", PI_SEQUENCE0x02000000, PI_NOTE0x00400000, "XFER_ACK has no related XFER_SEGMENT", EXPFILL0, ((void*)0), 0, ((void*)0), {0, {((void*)0), ((void*)0), FT_NONE
, BASE_NONE, ((void*)0), 0, ((void*)0), -1, 0, HF_REF_TYPE_NONE
, -1, ((void*)0)}}}},

619

};

620

621

static const fragment_items xfer_frag_items = {

622

/*Fragment subtrees*/

623

&ett_xfer_fragment,

624

&ett_xfer_fragments,

625

/*Fragment Fields*/

626

&hf_xfer_fragments,

627

&hf_xfer_fragment,

628

&hf_xfer_fragment_overlap,

629

&hf_xfer_fragment_overlap_conflicts,

630

&hf_xfer_fragment_multiple_tails,

631

&hf_xfer_fragment_too_long_fragment,

632

&hf_xfer_fragment_error,

633

&hf_xfer_fragment_count,

634

/*Reassembled in field*/

635

&hf_xfer_reassembled_in,

636

/*Reassembled length field*/

637

&hf_xfer_reassembled_length,

638

/* Reassembled data field */

639

&hf_xfer_reassembled_data,

640

/*Tag*/

641

"Transfer fragments"

642

};

643

644

static unsigned tvb_get_sdnv(tvbuff_t *tvb, unsigned offset, uint64_t *value) {

645

return tvb_get_varint(tvb, offset, FT_VARINT_MAX_LEN10, value, ENC_VARINT_SDNV0x00000010);

646

}

647

648

static void tcpcl_frame_loc_init(tcpcl_frame_loc_t *loc, const packet_info *pinfo, tvbuff_t *tvb, const int offset) {

649

loc->frame_num = pinfo->num;

650

// This is a messy way to determine the index,

651

// but no other public functions allow determining how two TVB are related

652

loc->src_ix = -1;

653

for(GSList *srcit = pinfo->data_src; srcit != NULL((void*)0); srcit = g_slist_next(srcit)((srcit) ? (((GSList *)(srcit))->next) : ((void*)0))) {

654

++(loc->src_ix);

655

struct data_source *src = srcit->data;

656

if (get_data_source_tvb(src)->real_data == tvb->real_data) {

657

break;

658

}

659

}

660

loc->raw_offset = tvb_raw_offset(tvb) + offset;

661

}

662

663

/** Construct a new object on the file allocator.

664

*/

665

static tcpcl_frame_loc_t * tcpcl_frame_loc_new(wmem_allocator_t *alloc, const packet_info *pinfo, tvbuff_t *tvb, const int offset) {

666

tcpcl_frame_loc_t *obj = wmem_new(alloc, tcpcl_frame_loc_t)((tcpcl_frame_loc_t*)wmem_alloc((alloc), sizeof(tcpcl_frame_loc_t
)));

667

tcpcl_frame_loc_init(obj, pinfo, tvb, offset);

668

return obj;

669

}

670

671

/** Construct a new object on the file allocator.

672

*/

673

static tcpcl_frame_loc_t * tcpcl_frame_loc_clone(wmem_allocator_t *alloc, const tcpcl_frame_loc_t *loc) {

674

tcpcl_frame_loc_t *obj = wmem_new(alloc, tcpcl_frame_loc_t)((tcpcl_frame_loc_t*)wmem_alloc((alloc), sizeof(tcpcl_frame_loc_t
)));

675

*obj = *loc;

676

return obj;

677

}

678

679

#define tcpcl_frame_loc_freewmem_free wmem_free

680

681

/** Function to match the GCompareDataFunc signature.

682

*/

683

static int tcpcl_frame_loc_compare(const void *a, const void *b, void *user_data _U___attribute__((unused))) {

684

const tcpcl_frame_loc_t *aloc = a;

685

const tcpcl_frame_loc_t *bloc = b;

686

687

if (aloc->frame_num < bloc->frame_num) {

688

return -1;

689

}

690

else if (aloc->frame_num > bloc->frame_num) {

691

return 1;

692

}

693

694

if (aloc->raw_offset < bloc->raw_offset) {

695

return -1;

696

}

697

else if (aloc->raw_offset > bloc->raw_offset) {

698

return 1;

699

}

700

return 0;

701

}

702

703

/** Function to match the GCompareFunc signature.

704

*/

705

static gboolean tcpcl_frame_loc_equal(const void *a, const void *b) {

706

const tcpcl_frame_loc_t *aobj = a;

707

const tcpcl_frame_loc_t *bobj = b;

708

return (

709

(aobj->frame_num == bobj->frame_num)

710

&& (aobj->raw_offset == bobj->raw_offset)

711

);

712

}

713

714

/** Function to match the GHashFunc signature.

715

*/

716

static unsigned tcpcl_frame_loc_hash(const void *key) {

717

const tcpcl_frame_loc_t *obj = key;

718

return (

719

g_int_hash(&(obj->frame_num))

720

^ g_int_hash(&(obj->raw_offset))

721

);

722

}

723

724

struct tcpcl_ack_meta;

725

typedef struct tcpcl_ack_meta tcpcl_ack_meta_t;

726

struct tcpcl_seg_meta;

727

typedef struct tcpcl_seg_meta tcpcl_seg_meta_t;

728

729

struct tcpcl_seg_meta {

730

/// Location associated with this metadata

731

tcpcl_frame_loc_t frame_loc;

732

/// Timestamp on the frame (end time if reassembled)

733

nstime_t frame_time;

734

/// Copy of message flags

735

uint8_t flags;

736

/// Total transfer length including this segment

737

uint64_t seen_len;

738

739

/// Potential related start segment

740

tcpcl_seg_meta_t *related_start;

741

/// Potential related XFER_ACK

742

tcpcl_ack_meta_t *related_ack;

743

};

744

745

static tcpcl_seg_meta_t * tcpcl_seg_meta_new(const packet_info *pinfo, const tcpcl_frame_loc_t *loc) {

746

tcpcl_seg_meta_t *obj = wmem_new(wmem_file_scope(), tcpcl_seg_meta_t)((tcpcl_seg_meta_t*)wmem_alloc((wmem_file_scope()), sizeof(tcpcl_seg_meta_t
)));

747

obj->frame_loc = *loc;

748

obj->frame_time = pinfo->abs_ts;

749

obj->flags = 0;

750

obj->seen_len = 0;

751

obj->related_start = NULL((void*)0);

752

obj->related_ack = NULL((void*)0);

753

return obj;

754

}

755

756

static void tcpcl_seg_meta_free(tcpcl_seg_meta_t *obj) {

757

wmem_free(wmem_file_scope(), obj);

758

}

759

760

/** Function to match the GCompareFunc signature.

761

*/

762

static int tcpcl_seg_meta_compare_loc(const void *a, const void *b) {

763

return tcpcl_frame_loc_compare(

764

&(((tcpcl_seg_meta_t *)a)->frame_loc),

765

&(((tcpcl_seg_meta_t *)b)->frame_loc),

766

NULL((void*)0)

767

);

768

}

769

770

struct tcpcl_ack_meta {

771

/// Location associated with this metadata

772

tcpcl_frame_loc_t frame_loc;

773

/// Timestamp on the frame (end time if reassembled)

774

nstime_t frame_time;

775

/// Copy of message flags

776

uint8_t flags;

777

/// Total acknowledged length including this ack

778

uint64_t seen_len;

779

780

/// Potential related start segment

781

tcpcl_seg_meta_t *related_start;

782

/// Potential related XFER_SEGMENT

783

tcpcl_seg_meta_t *related_seg;

784

};

785

786

static tcpcl_ack_meta_t * tcpcl_ack_meta_new(const packet_info *pinfo, const tcpcl_frame_loc_t *loc) {

787

tcpcl_ack_meta_t *obj = wmem_new(wmem_file_scope(), tcpcl_ack_meta_t)((tcpcl_ack_meta_t*)wmem_alloc((wmem_file_scope()), sizeof(tcpcl_ack_meta_t
)));

788

obj->frame_loc = *loc;

789

obj->frame_time = pinfo->abs_ts;

790

obj->flags = 0;

791

obj->seen_len = 0;

792

obj->related_start = NULL((void*)0);

793

obj->related_seg = NULL((void*)0);

794

return obj;

795

}

796

797

static void tcpcl_ack_meta_free(tcpcl_ack_meta_t *obj) {

798

wmem_free(wmem_file_scope(), obj);

799

}

800

801

/** Function to match the GCompareFunc signature.

802

*/

803

static int tcpcl_ack_meta_compare_loc(const void *a, const void *b) {

804

return tcpcl_frame_loc_compare(

805

&(((tcpcl_seg_meta_t *)a)->frame_loc),

806

&(((tcpcl_seg_meta_t *)b)->frame_loc),

807

NULL((void*)0)

808

);

809

}

810

811

static tcpcl_transfer_t * tcpcl_transfer_new(void) {

812

tcpcl_transfer_t *obj = wmem_new(wmem_file_scope(), tcpcl_transfer_t)((tcpcl_transfer_t*)wmem_alloc((wmem_file_scope()), sizeof(tcpcl_transfer_t
)));

813

obj->seg_list = wmem_list_new(wmem_file_scope());

814

obj->ack_list = wmem_list_new(wmem_file_scope());

815

obj->total_length = NULL((void*)0);

816

return obj;

817

}

818

819

static tcpcl_transfer_t * get_or_create_transfer_t(wmem_map_t *table, const uint64_t xfer_id) {

820

tcpcl_transfer_t *xfer = wmem_map_lookup(table, &xfer_id);

821

if (!xfer) {

822

uint64_t *key = wmem_new(wmem_file_scope(), uint64_t)((uint64_t*)wmem_alloc((wmem_file_scope()), sizeof(uint64_t))
);

823

*key = xfer_id;

824

xfer = tcpcl_transfer_new();

825

wmem_map_insert(table, key, xfer);

826

}

827

return xfer;

828

}

829

830

static tcpcl_peer_t * tcpcl_peer_new(void) {

831

tcpcl_peer_t *obj = wmem_new0(wmem_file_scope(), tcpcl_peer_t)((tcpcl_peer_t*)wmem_alloc0((wmem_file_scope()), sizeof(tcpcl_peer_t
)));

832

clear_address(&(obj->addr));

833

obj->frame_loc_to_transfer = wmem_map_new(wmem_file_scope(), tcpcl_frame_loc_hash, tcpcl_frame_loc_equal);

834

obj->transfers = wmem_map_new(wmem_file_scope(), g_int64_hash, g_int64_equal);

835

return obj;

836

}

837

838

static void tcpcl_peer_associate_transfer(tcpcl_peer_t *peer, const tcpcl_frame_loc_t *loc, const uint64_t xfer_id) {

839

void * *xfer = wmem_map_lookup(peer->frame_loc_to_transfer, loc);

840

if (!xfer) {

841

tcpcl_frame_loc_t *key = tcpcl_frame_loc_clone(wmem_file_scope(), loc);

842

uint64_t *val = wmem_new(wmem_file_scope(), uint64_t)((uint64_t*)wmem_alloc((wmem_file_scope()), sizeof(uint64_t))
);

843

*val = xfer_id;

844

wmem_map_insert(peer->frame_loc_to_transfer, key, val);

845

}

846

}

847

848

static tcpcl_conversation_t * tcpcl_conversation_new(void) {

849

tcpcl_conversation_t *obj = wmem_new0(wmem_file_scope(), tcpcl_conversation_t)((tcpcl_conversation_t*)wmem_alloc0((wmem_file_scope()), sizeof
(tcpcl_conversation_t)));

850

obj->active = tcpcl_peer_new();

851

obj->passive = tcpcl_peer_new();

852

return obj;

853

}

854

855

tcpcl_dissect_ctx_t * tcpcl_dissect_ctx_get(tvbuff_t *tvb, packet_info *pinfo, const int offset) {

856

conversation_t *convo = find_or_create_conversation(pinfo);

857

tcpcl_conversation_t *tcpcl_convo = (tcpcl_conversation_t *)conversation_get_proto_data(convo, proto_tcpcl);

858

if (!tcpcl_convo) {

859

return NULL((void*)0);

860

}

861

tcpcl_dissect_ctx_t *ctx = wmem_new0(pinfo->pool, tcpcl_dissect_ctx_t)((tcpcl_dissect_ctx_t*)wmem_alloc0((pinfo->pool), sizeof(tcpcl_dissect_ctx_t
)));

862

ctx->convo = tcpcl_convo;

863

ctx->cur_loc = tcpcl_frame_loc_new(pinfo->pool, pinfo, tvb, offset);

864

865

const bool_Bool src_is_active = (

866

addresses_equal(&(ctx->convo->active->addr), &(pinfo->src))

867

&& (ctx->convo->active->port == pinfo->srcport)

868

);

869

if (src_is_active) {

870

ctx->tx_peer = ctx->convo->active;

871

ctx->rx_peer = ctx->convo->passive;

872

}

873

else {

874

ctx->tx_peer = ctx->convo->passive;

875

ctx->rx_peer = ctx->convo->active;

876

}

877

878

ctx->is_contact = (

879

!(ctx->tx_peer->chdr_missing)

880

&& (

881

!(ctx->tx_peer->chdr_seen)

882

|| tcpcl_frame_loc_equal(ctx->tx_peer->chdr_seen, ctx->cur_loc)

883

)

884

);

885

886

return ctx;

887

}

888

889

static void set_chdr_missing(tcpcl_peer_t *peer, uint8_t version) {

890

peer->chdr_missing = true1;

891

peer->version = version;

892

// assumed parameters

893

peer->segment_mru = UINT64_MAX(18446744073709551615UL);

894

peer->transfer_mru = UINT64_MAX(18446744073709551615UL);

895

}

896

897

898

static void try_negotiate(tcpcl_dissect_ctx_t *ctx, packet_info *pinfo) {

899

if (!(ctx->convo->contact_negotiated)

900

&& (ctx->convo->active->chdr_seen)

901

&& (ctx->convo->passive->chdr_seen)) {

902

ctx->convo->session_use_tls = (

903

ctx->convo->active->can_tls & ctx->convo->passive->can_tls

904

);

905

ctx->convo->contact_negotiated = true1;

906

907

if (ctx->convo->session_use_tls

908

&& (!(ctx->convo->session_tls_start))) {

909

col_append_str(pinfo->cinfo, COL_INFO, " [STARTTLS]");

910

ctx->convo->session_tls_start = tcpcl_frame_loc_clone(wmem_file_scope(), ctx->cur_loc);

911

ssl_starttls_ack(tls_handle, pinfo, tcpcl_handle);

912

}

913

}

914

915

if (!(ctx->convo->sess_negotiated)

916

&& (ctx->convo->active->sess_init_seen)

917

&& (ctx->convo->passive->sess_init_seen)) {

918

ctx->convo->sess_keepalive = MIN((((ctx->convo->active->keepalive) < (ctx->convo
->passive->keepalive)) ? (ctx->convo->active->
keepalive) : (ctx->convo->passive->keepalive))

919

ctx->convo->active->keepalive,(((ctx->convo->active->keepalive) < (ctx->convo
->passive->keepalive)) ? (ctx->convo->active->
keepalive) : (ctx->convo->passive->keepalive))

920

ctx->convo->passive->keepalive(((ctx->convo->active->keepalive) < (ctx->convo
->passive->keepalive)) ? (ctx->convo->active->
keepalive) : (ctx->convo->passive->keepalive))

921

)(((ctx->convo->active->keepalive) < (ctx->convo
->passive->keepalive)) ? (ctx->convo->active->
keepalive) : (ctx->convo->passive->keepalive));

922

ctx->convo->sess_negotiated = true1;

923

924

}

925

}

926

927

typedef struct {

928

// key type for addresses_ports_reassembly_table_functions

929

void *addr_port;

930

// TCPCL ID

931

uint64_t xfer_id;

932

} tcpcl_fragment_key_t;

933

934

static unsigned fragment_key_hash(const void *ptr) {

935

const tcpcl_fragment_key_t *obj = (const tcpcl_fragment_key_t *)ptr;

936

return (

937

addresses_ports_reassembly_table_functions.hash_func(obj->addr_port)

938

^ g_int64_hash(&(obj->xfer_id))

939

);

940

}

941

942

static gboolean fragment_key_equal(const void *ptrA, const void *ptrB) {

943

const tcpcl_fragment_key_t *objA = (const tcpcl_fragment_key_t *)ptrA;

944

const tcpcl_fragment_key_t *objB = (const tcpcl_fragment_key_t *)ptrB;

945

return (

946

addresses_ports_reassembly_table_functions.equal_func(objA->addr_port, objB->addr_port)

947

&& (objA->xfer_id == objB->xfer_id)

948

);

949

}

950

951

static void *fragment_key_temporary(const packet_info *pinfo, const uint32_t id, const void *data) {

952

tcpcl_fragment_key_t *obj = g_slice_new(tcpcl_fragment_key_t)((tcpcl_fragment_key_t*) g_slice_alloc (sizeof (tcpcl_fragment_key_t
)));

953

obj->addr_port = addresses_ports_reassembly_table_functions.temporary_key_func(pinfo, id, NULL((void*)0));

954

obj->xfer_id = *((const uint64_t *)data);

955

return (void *)obj;

956

}

957

958

static void *fragment_key_persistent(const packet_info *pinfo, const uint32_t id, const void *data) {

959

tcpcl_fragment_key_t *obj = g_slice_new(tcpcl_fragment_key_t)((tcpcl_fragment_key_t*) g_slice_alloc (sizeof (tcpcl_fragment_key_t
)));

960

obj->addr_port = addresses_ports_reassembly_table_functions.persistent_key_func(pinfo, id, NULL((void*)0));

961

obj->xfer_id = *((const uint64_t *)data);

962

return (void *)obj;

963

}

964

965

static void fragment_key_free_temporary(void *ptr) {

966

tcpcl_fragment_key_t *obj = (tcpcl_fragment_key_t *)ptr;

967

if (obj) {

968

addresses_ports_reassembly_table_functions.free_temporary_key_func(obj->addr_port);

969

g_slice_free(tcpcl_fragment_key_t, obj)do { if (1) g_slice_free1 (sizeof (tcpcl_fragment_key_t), (obj
)); else (void) ((tcpcl_fragment_key_t*) 0 == (obj)); } while
(0);

970

}

971

}

972

973

static void fragment_key_free_persistent(void *ptr) {

974

tcpcl_fragment_key_t *obj = (tcpcl_fragment_key_t *)ptr;

975

if (obj) {

976

addresses_ports_reassembly_table_functions.free_persistent_key_func(obj->addr_port);

977

g_slice_free(tcpcl_fragment_key_t, obj)do { if (1) g_slice_free1 (sizeof (tcpcl_fragment_key_t), (obj
)); else (void) ((tcpcl_fragment_key_t*) 0 == (obj)); } while
(0);

978

}

979

}

980

981

static reassembly_table_functions xfer_reassembly_table_functions = {

982

fragment_key_hash,

983

fragment_key_equal,

984

fragment_key_temporary,

985

fragment_key_persistent,

986

fragment_key_free_temporary,

987

fragment_key_free_persistent

988

};

989

990

/** Record metadata about one segment in a transfer.

991

*/

992

static void transfer_add_segment(tcpcl_dissect_ctx_t *ctx, uint64_t xfer_id, uint8_t flags,

993

uint64_t data_len,

994

packet_info *pinfo, tvbuff_t *tvb, proto_tree *tree_msg,

995

proto_item *item_msg, proto_item *item_flags) {

996

tcpcl_transfer_t *xfer = get_or_create_transfer_t(ctx->tx_peer->transfers, xfer_id);

997

998

uint8_t flag_start, flag_end;

999

if (ctx->tx_peer->version == 3) {

1000

flag_start = TCPCLV3_DATA_START_FLAG;

1001

flag_end = TCPCLV3_DATA_END_FLAG;

1002

}

1003

else {

1004

flag_start = TCPCLV4_TRANSFER_FLAG_START;

1005

flag_end = TCPCLV4_TRANSFER_FLAG_END;

1006

}

1007

1008

// Add or get the segment metadata

1009

tcpcl_seg_meta_t *seg_meta = tcpcl_seg_meta_new(pinfo, ctx->cur_loc);

1010

wmem_list_frame_t *frm = wmem_list_find_custom(xfer->seg_list, seg_meta, tcpcl_seg_meta_compare_loc);

1011

if (frm) {

1012

tcpcl_seg_meta_free(seg_meta);

1013

seg_meta = wmem_list_frame_data(frm);

1014

}

1015

else {

1016

frm = wmem_list_insert_sorted(xfer->seg_list, seg_meta, tcpcl_seg_meta_compare_loc);

1017

// Set for new item

1018

seg_meta->flags = flags;

1019

}

1020

1021

// mark start-of-transfer

1022

if (!(seg_meta->related_start)) {

1023

wmem_list_frame_t *frm_front = wmem_list_head(xfer->seg_list);

1024

tcpcl_seg_meta_t *seg_front = frm_front ? wmem_list_frame_data(frm_front) : NULL((void*)0);

1025

if (seg_front && (seg_front->flags & flag_start)) {

1026

seg_meta->related_start = seg_front;

1027

}

1028

}

1029

1030

// accumulate segment sizes

1031

uint64_t prev_seen_len;

1032

wmem_list_frame_t *frm_prev = wmem_list_frame_prev(frm);

1033

if (!frm_prev) {

1034

if (!(flags & flag_start)) {

1035

expert_add_info(pinfo, item_flags, &ei_tcpclv4_xfer_seg_missing_start);

1036

}

1037

prev_seen_len = 0;

1038

}

1039

else {

1040

const tcpcl_seg_meta_t *seg_prev = wmem_list_frame_data(frm_prev);

1041

if (flags & flag_start) {

1042

expert_add_info(pinfo, item_flags, &ei_tcpclv4_xfer_seg_duplicate_start);

1043

}

1044

prev_seen_len = seg_prev->seen_len;

1045

}

1046

wmem_list_frame_t *frm_next = wmem_list_frame_next(frm);

1047

if (!frm_next) {

1048

if (!(flags & flag_end)) {

1049

expert_add_info(pinfo, item_flags, &ei_tcpclv4_xfer_seg_missing_end);

1050

}

1051

}

1052

else {

1053

if (flags & flag_end) {

1054

expert_add_info(pinfo, item_flags, &ei_tcpclv4_xfer_seg_duplicate_end);

1055

}

1056

}

1057

seg_meta->seen_len = prev_seen_len + data_len;

1058

1059

proto_item *item_seen = proto_tree_add_uint64(tree_msg, hf_tcpclv4_xfer_segment_seen_len, tvb, 0, 0, seg_meta->seen_len);

1060

proto_item_set_generated(item_seen);

1061

if (seg_meta->seen_len > ctx->rx_peer->transfer_mru) {

1062

expert_add_info(pinfo, item_seen, &ei_tcpclv4_xferload_over_xfer_mru);

1063

}

1064

if (xfer->total_length) {

1065

if (seg_meta->seen_len > *(xfer->total_length)) {

1066

expert_add_info(pinfo, item_seen, &ei_xfer_seg_over_total_len);

1067

}

1068

else if ((flags & flag_end)

1069

&& (seg_meta->seen_len != *(xfer->total_length))) {

1070

expert_add_info(pinfo, item_seen, &ei_xfer_mismatch_total_len);

1071

}

1072

proto_item *item_total = proto_tree_add_uint64(tree_msg, hf_tcpclv4_xfer_total_len, tvb, 0, 0, *(xfer->total_length));

1073

proto_item_set_generated(item_total);

1074

}

1075

1076

if (seg_meta->related_ack) {

1077

proto_item *item_rel = proto_tree_add_uint(tree_msg, hf_tcpclv4_xfer_segment_related_ack, tvb, 0, 0, seg_meta->related_ack->frame_loc.frame_num);

1078

proto_item_set_generated(item_rel);

1079

1080

nstime_t td;

1081

nstime_delta(&td, &(seg_meta->related_ack->frame_time), &(seg_meta->frame_time));

1082

proto_item *item_td = proto_tree_add_time(tree_msg, hf_tcpclv4_xfer_segment_time_diff, tvb, 0, 0, &td);

1083

proto_item_set_generated(item_td);

1084

1085

}

1086

else {

1087

expert_add_info(pinfo, item_msg, &ei_tcpclv4_xfer_seg_no_relation);

1088

}

1089

if (seg_meta->related_start && (seg_meta->related_start != seg_meta)) {

1090

proto_item *item_rel = proto_tree_add_uint(tree_msg, hf_tcpclv4_xfer_segment_related_start, tvb, 0, 0, seg_meta->related_start->frame_loc.frame_num);

1091

proto_item_set_generated(item_rel);

1092

1093

nstime_t td;

1094

nstime_delta(&td, &(seg_meta->frame_time), &(seg_meta->related_start->frame_time));

1095

proto_item *item_td = proto_tree_add_time(tree_msg, hf_tcpclv4_xfer_segment_time_start, tvb, 0, 0, &td);

1096

proto_item_set_generated(item_td);

1097

}

1098

}

1099

1100

static void transfer_add_ack(tcpcl_dissect_ctx_t *ctx, uint64_t xfer_id, uint8_t flags,

1101

uint64_t ack_len,

1102

packet_info *pinfo, tvbuff_t *tvb, proto_tree *tree_msg,

1103

proto_item *item_msg, proto_item *item_flags) {

1104

tcpcl_transfer_t *xfer = get_or_create_transfer_t(ctx->rx_peer->transfers, xfer_id);

1105

1106

// Add or get the ack metadata

1107

tcpcl_ack_meta_t *ack_meta = tcpcl_ack_meta_new(pinfo, ctx->cur_loc);

1108

wmem_list_frame_t *frm = wmem_list_find_custom(xfer->ack_list, ack_meta, tcpcl_ack_meta_compare_loc);

1109

if (frm) {

1110

tcpcl_ack_meta_free(ack_meta);

1111

ack_meta = wmem_list_frame_data(frm);

1112

}

1113

else {

1114

frm = wmem_list_insert_sorted(xfer->ack_list, ack_meta, tcpcl_ack_meta_compare_loc);

1115

// Set for new item

1116

ack_meta->flags = flags;

1117

ack_meta->seen_len = ack_len;

1118

}

1119

1120

// mark start-of-transfer

1121

if (!(ack_meta->related_start)) {

1122

wmem_list_frame_t *frm_front = wmem_list_head(xfer->seg_list);

1123

tcpcl_seg_meta_t *seg_front = frm_front ? wmem_list_frame_data(frm_front) : NULL((void*)0);

1124

if (seg_front && (seg_front->flags & TCPCLV4_TRANSFER_FLAG_START)) {

1125

ack_meta->related_start = seg_front;

1126

}

1127

}

1128

1129

// Assemble both of the links here, as ACK will always follow segment

1130

if (!(ack_meta->related_seg)) {

1131

wmem_list_frame_t *seg_iter = wmem_list_head(xfer->seg_list);

1132

for (; seg_iter; seg_iter = wmem_list_frame_next(seg_iter)) {

1133

tcpcl_seg_meta_t *seg_meta = wmem_list_frame_data(seg_iter);

1134

if (seg_meta->seen_len == ack_meta->seen_len) {

1135

seg_meta->related_ack = ack_meta;

1136

ack_meta->related_seg = seg_meta;

1137

}

1138

}

1139

}

1140

1141

if (xfer->total_length) {

1142

proto_item *item_total = proto_tree_add_uint64(tree_msg, hf_tcpclv4_xfer_total_len, tvb, 0, 0, *(xfer->total_length));

1143

proto_item_set_generated(item_total);

1144

}

1145

if (ack_meta->related_seg) {

1146

proto_item *item_rel = proto_tree_add_uint(tree_msg, hf_tcpclv4_xfer_ack_related_seg, tvb, 0, 0, ack_meta->related_seg->frame_loc.frame_num);

1147

proto_item_set_generated(item_rel);

1148

1149

nstime_t td;

1150

nstime_delta(&td, &(ack_meta->frame_time), &(ack_meta->related_seg->frame_time));

1151

proto_item *item_td = proto_tree_add_time(tree_msg, hf_tcpclv4_xfer_ack_time_diff, tvb, 0, 0, &td);

1152

proto_item_set_generated(item_td);

1153

1154

if (item_flags && (ack_meta->flags != ack_meta->related_seg->flags)) {

1155

expert_add_info(pinfo, item_flags, &ei_xfer_ack_mismatch_flags);

1156

}

1157

}

1158

else {

1159

expert_add_info(pinfo, item_msg, &ei_xfer_ack_no_relation);

1160

}

1161

if (ack_meta->related_start) {

1162

proto_item *item_rel = proto_tree_add_uint(tree_msg, hf_tcpclv4_xfer_ack_related_start, tvb, 0, 0, ack_meta->related_start->frame_loc.frame_num);

1163

proto_item_set_generated(item_rel);

1164

1165

nstime_t td;

1166

nstime_delta(&td, &(ack_meta->frame_time), &(ack_meta->related_start->frame_time));

1167

proto_item *item_td = proto_tree_add_time(tree_msg, hf_tcpclv4_xfer_ack_time_start, tvb, 0, 0, &td);

1168

proto_item_set_generated(item_td);

1169

}

1170

}

1171

1172

static void transfer_add_refuse(tcpcl_dissect_ctx_t *ctx, uint64_t xfer_id,

1173

packet_info *pinfo, tvbuff_t *tvb, proto_tree *tree_msg,

1174

proto_item *item_msg) {

1175

const tcpcl_transfer_t *xfer = wmem_map_lookup(ctx->rx_peer->transfers, &xfer_id);

1176

const tcpcl_seg_meta_t *seg_last = NULL((void*)0);

1177

if (xfer) {

1178

wmem_list_frame_t *seg_iter = wmem_list_tail(xfer->seg_list);

1179

seg_iter = seg_iter ? wmem_list_frame_prev(seg_iter) : NULL((void*)0);

1180

seg_last = seg_iter ? wmem_list_frame_data(seg_iter) : NULL((void*)0);

1181

}

1182

1183

if (seg_last) {

1184

proto_item *item_rel = proto_tree_add_uint(tree_msg, hf_tcpclv4_xfer_refuse_related_seg, tvb, 0, 0, seg_last->frame_loc.frame_num);

1185

proto_item_set_generated(item_rel);

1186

}

1187

else {

1188

expert_add_info(pinfo, item_msg, &ei_tcpclv4_xfer_refuse_no_transfer);

1189

}

1190

}

1191

1192

static int get_clamped_length(uint64_t orig, packet_info *pinfo, proto_item *item) {

1193

int clamped;

1194

if (orig > INT_MAX2147483647) {

1195

clamped = INT_MAX2147483647;

1196

if (pinfo && item) {

1197

expert_add_info(pinfo, item, &ei_length_clamped);

1198

}

1199

}

1200

else {

1201

clamped = (int) orig;

1202

}

1203

return clamped;

1204

}

1205

1206

static unsigned

1207

get_v3_msg_len(packet_info *pinfo _U___attribute__((unused)), tvbuff_t *tvb, int offset,

1208

tcpcl_dissect_ctx_t *ctx _U___attribute__((unused)))

1209

{

1210

uint64_t len;

1211

unsigned bytecount;

1212

uint8_t conv_hdr = tvb_get_uint8(tvb, offset);

1213

offset += 1;

1214

unsigned msg_len = 1;

1215

1216

switch (conv_hdr & TCPCLV3_TYPE_MASK)

1217

{

1218

case TCPCLV3_DATA_SEGMENT: {

1219

/* get length from sdnv */

1220

bytecount = tvb_get_sdnv(tvb, offset, &len);

1221

if (bytecount == 0) {

1222

return 0;

1223

}

1224

const int len_clamp = get_clamped_length(len, NULL((void*)0), NULL((void*)0));

1225

msg_len += bytecount + (unsigned)len_clamp;

1226

break;

1227

}

1228

case TCPCLV3_ACK_SEGMENT:

1229

/* get length from sdnv */

1230

bytecount = tvb_get_sdnv(tvb, offset, &len);

1231

if (bytecount == 0) {

1232

return 0;

1233

}

1234

msg_len += bytecount;

1235

break;

1236

1237

case TCPCLV3_KEEP_ALIVE:

1238

case TCPCLV3_REFUSE_BUNDLE:

1239

/* always 1 byte */

1240

break;

1241

case TCPCLV3_SHUTDOWN:

1242

if (conv_hdr & TCPCLV3_SHUTDOWN_REASON) {

1243

msg_len += 1;

1244

}

1245

if (conv_hdr & TCPCLV3_SHUTDOWN_DELAY) {

1246

msg_len += 2;

1247

}

1248

break;

1249

1250

case TCPCLV3_LENGTH:

1251

/* get length from sdnv */

1252

bytecount = tvb_get_sdnv(tvb, offset, &len);

1253

if (bytecount == 0) {

1254

return 0;

1255

}

1256

msg_len += bytecount;

1257

break;

1258

1259

default:

1260

// no known message

1261

return 0;

1262

}

1263

1264

return msg_len;

1265

}

1266

1267

static int

1268

dissect_v3_msg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,

1269

tcpcl_dissect_ctx_t *ctx)

1270

{

1271

uint8_t conv_hdr;

1272

const char *msgtype_name;

1273

uint8_t refuse_bundle_hdr;

1274

int offset = 0;

1275

int sdnv_length;

1276

uint64_t segment_length;

1277

proto_item *conv_item, *sub_item;

1278

proto_tree *conv_tree, *sub_tree;

1279

uint64_t *xfer_id = NULL((void*)0);

1280

proto_item *item_xfer_id = NULL((void*)0);

1281

1282

conv_item = proto_tree_add_item(tree, hf_tcpclv3_mhdr, tvb, 0, -1, ENC_NA0x00000000);

1283

conv_tree = proto_item_add_subtree(conv_item, ett_tcpclv3_mhdr);

1284

1285

conv_hdr = tvb_get_uint8(tvb, offset);

1286

proto_tree_add_item(conv_tree, hf_tcpclv3_pkt_type, tvb, offset, 1, ENC_BIG_ENDIAN0x00000000);

1287

1288

msgtype_name = val_to_str_const((conv_hdr>>4)&0xF, v3_message_type_vals, "Unknown");

1289

col_append_sep_str(pinfo->cinfo, COL_INFO, NULL((void*)0), msgtype_name);

1290

proto_item_append_text(proto_tree_get_parent(conv_tree), ": %s", msgtype_name);

1291

1292

switch (conv_hdr & TCPCLV3_TYPE_MASK) {

1293

case TCPCLV3_DATA_SEGMENT: {

1294

proto_item *item_flags;

1295

1296

item_flags = proto_tree_add_bitmask(

1297

conv_tree, tvb,

1298

offset, hf_tcpclv3_data_procflags,

1299

ett_tcpclv3_data_procflags, v3_data_procflags,

1300

ENC_BIG_ENDIAN0x00000000

1301

);

1302

offset += 1;

1303

1304

/* Only Start and End flags (bits 0 & 1) are valid in Data Segment */

1305

if ((conv_hdr & ~((uint8_t)TCPCLV3_TYPE_MASK | (uint8_t)TCPCLV3_DATA_FLAGS)) != 0) {

1306

expert_add_info(pinfo, item_flags, &ei_tcpclv3_data_flags);

1307

}

1308

1309

sub_item = proto_tree_add_item_ret_varint(conv_tree, hf_tcpclv3_data_segment_length, tvb, offset, -1, ENC_VARINT_SDNV0x00000010, &segment_length, &sdnv_length);

1310

if (sdnv_length == 0) {

1311

expert_add_info(pinfo, sub_item, &ei_tcpclv3_segment_length);

1312

return 0;

1313

}

1314

offset += sdnv_length;

1315

const int data_len_clamp = get_clamped_length(segment_length, pinfo, sub_item);

1316

1317

// implied transfer ID

1318

xfer_id = wmem_map_lookup(ctx->tx_peer->frame_loc_to_transfer, ctx->cur_loc);

1319

if (!xfer_id) {

1320

xfer_id = wmem_new(pinfo->pool, uint64_t)((uint64_t*)wmem_alloc((pinfo->pool), sizeof(uint64_t)));

1321

*xfer_id = wmem_map_size(ctx->tx_peer->transfers);

1322

1323

if (conv_hdr & TCPCLV3_DATA_START_FLAG) {

1324

*xfer_id += 1;

1325

get_or_create_transfer_t(ctx->tx_peer->transfers, *xfer_id);

1326

}

1327

tcpcl_peer_associate_transfer(ctx->tx_peer, ctx->cur_loc, *xfer_id);

1328

}

1329

item_xfer_id = proto_tree_add_uint64(conv_tree, hf_tcpclv3_xfer_id, tvb, 0, 0, *xfer_id);

1330

proto_item_set_generated(item_xfer_id);

1331

1332

proto_tree_add_item(conv_tree, hf_tcpclv3_data_segment_data, tvb, offset, data_len_clamp, ENC_NA0x00000000);

1333

1334

if (tcpcl_analyze_sequence) {

1335

transfer_add_segment(ctx, *xfer_id, (conv_hdr & TCPCLV3_DATA_FLAGS), segment_length, pinfo, tvb, conv_tree, conv_item, item_flags);

1336

}

1337

1338

if (tcpcl_desegment_transfer) {

1339

// Reassemble the segments

1340

fragment_head *frag_msg;

1341

frag_msg = fragment_add_seq_next(

1342

&xfer_reassembly_table,

1343

tvb, offset,

1344

pinfo, 0, xfer_id,

1345

data_len_clamp,

1346

!(conv_hdr & TCPCLV3_DATA_END_FLAG)

1347

);

1348

ctx->xferload = process_reassembled_data(

1349

tvb, offset, pinfo,

1350

"Reassembled Transfer",

1351

frag_msg,

1352

&xfer_frag_items,

1353

NULL((void*)0),

1354

proto_tree_get_parent_tree(tree)

1355

);

1356

}

1357

offset += data_len_clamp;

1358

1359

break;

1360

}

1361

case TCPCLV3_ACK_SEGMENT: {

1362

/*No valid flags*/

1363

offset += 1;

1364

1365

sub_item = proto_tree_add_item_ret_varint(conv_tree, hf_tcpclv3_ack_length, tvb, offset, -1, ENC_VARINT_SDNV0x00000010, &segment_length, &sdnv_length);

1366

if (sdnv_length == 0) {

1367

expert_add_info(pinfo, sub_item, &ei_tcpclv3_ack_length);

1368

} else {

1369

offset += sdnv_length;

1370

}

1371

1372

// implied transfer ID

1373

xfer_id = wmem_map_lookup(ctx->rx_peer->frame_loc_to_transfer, ctx->cur_loc);

1374

if (!xfer_id) {

1375

xfer_id = wmem_new(pinfo->pool, uint64_t)((uint64_t*)wmem_alloc((pinfo->pool), sizeof(uint64_t)));

1376

*xfer_id = wmem_map_size(ctx->rx_peer->transfers);

1377

1378

tcpcl_peer_associate_transfer(ctx->rx_peer, ctx->cur_loc, *xfer_id);

1379

}

1380

item_xfer_id = proto_tree_add_uint64(conv_tree, hf_tcpclv3_xfer_id, tvb, 0, 0, *xfer_id);

1381

proto_item_set_generated(item_xfer_id);

1382

1383

if (tcpcl_analyze_sequence) {

1384

transfer_add_ack(ctx, *xfer_id, 0, segment_length, pinfo, tvb, conv_tree, conv_item, NULL((void*)0));

1385

}

1386

1387

break;

1388

}

1389

case TCPCLV3_KEEP_ALIVE:

1390

/*No valid flags in Keep Alive*/

1391

offset += 1;

1392

break;

1393

1394

case TCPCLV3_SHUTDOWN:

1395

/* Add tree for Shutdown Flags */

1396

sub_item = proto_tree_add_item(conv_tree, hf_tcpclv3_shutdown_flags, tvb,

1397

offset, 1, ENC_BIG_ENDIAN0x00000000);

1398

sub_tree = proto_item_add_subtree(sub_item, ett_tcpclv3_shutdown_flags);

1399

1400

proto_tree_add_item(sub_tree, hf_tcpclv3_shutdown_flags_reason,

1401

tvb, offset, 1, ENC_BIG_ENDIAN0x00000000);

1402

proto_tree_add_item(sub_tree, hf_tcpclv3_shutdown_flags_delay,

1403

tvb, offset, 1, ENC_BIG_ENDIAN0x00000000);

1404

1405

offset += 1;

1406

if (conv_hdr & TCPCLV3_SHUTDOWN_REASON) {

1407

proto_tree_add_item(conv_tree,

1408

hf_tcpclv3_shutdown_reason, tvb,

1409

offset, 1, ENC_BIG_ENDIAN0x00000000);

1410

offset += 1;

1411

}

1412

if (conv_hdr & TCPCLV3_SHUTDOWN_DELAY) {

1413

proto_tree_add_item(conv_tree,

1414

hf_tcpclv3_shutdown_delay, tvb,

1415

offset, 2, ENC_BIG_ENDIAN0x00000000);

1416

offset += 1;

1417

}

1418

break;

1419

case TCPCLV3_REFUSE_BUNDLE:

1420

/*No valid flags*/

1421

offset += 1;

1422

1423

refuse_bundle_hdr = tvb_get_uint8(tvb, offset);

1424

proto_tree_add_item(conv_tree, hf_tcpclv3_refuse_reason_code, tvb, offset, 1, ENC_BIG_ENDIAN0x00000000);

1425

offset += 1;

1426

col_set_str(pinfo->cinfo, COL_INFO, val_to_str_const((refuse_bundle_hdr>>4)&0xF, v3_refuse_reason_code, "Unknown"));

1427

1428

// implied transfer ID

1429

xfer_id = wmem_map_lookup(ctx->rx_peer->frame_loc_to_transfer, ctx->cur_loc);

1430

if (!xfer_id) {

1431

xfer_id = wmem_new(pinfo->pool, uint64_t)((uint64_t*)wmem_alloc((pinfo->pool), sizeof(uint64_t)));

1432

*xfer_id = wmem_map_size(ctx->rx_peer->transfers);

1433

1434

tcpcl_peer_associate_transfer(ctx->rx_peer, ctx->cur_loc, *xfer_id);

1435

}

1436

item_xfer_id = proto_tree_add_uint64(conv_tree, hf_tcpclv3_xfer_id, tvb, 0, 0, *xfer_id);

1437

proto_item_set_generated(item_xfer_id);

1438

1439

if (tcpcl_analyze_sequence) {

1440

transfer_add_refuse(ctx, *xfer_id, pinfo, tvb, conv_tree, conv_item);

1441

}

1442

1443

break;

1444

1445

default:

1446

expert_add_info(pinfo, proto_tree_get_parent(conv_tree), &ei_tcpclv3_invalid_msg_type);

1447

break;

1448

}

1449

1450

return offset;

1451

}

1452

1453

static unsigned get_v4_msg_len(packet_info *pinfo _U___attribute__((unused)), tvbuff_t *tvb, int offset,

1454

tcpcl_dissect_ctx_t *ctx _U___attribute__((unused))) {

1455

const int init_offset = offset;

1456

uint8_t msgtype = tvb_get_uint8(tvb, offset);

1457

offset += 1;

1458

switch(msgtype) {

1459

case TCPCLV4_MSGTYPE_SESS_INIT: {

1460

if (tvb_reported_length_remaining(tvb, offset) < 2 + 8 + 8 + 2) {

1461

return 0;

1462

}

1463

offset += 2 + 8 + 8;

1464

uint16_t nodeid_len = tvb_get_uint16(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1465

offset += 2;

1466

if (tvb_reported_length_remaining(tvb, offset) < nodeid_len + 4U) {

1467

return 0;

1468

}

1469

offset += nodeid_len;

1470

uint32_t extlist_len = tvb_get_uint32(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1471

offset += 4;

1472

if (ckd_add(&offset, offset, extlist_len)__builtin_add_overflow((offset), (extlist_len), (&offset)
)) {

1473

THROW(ReportedBoundsError)except_throw(1, (3), ((void*)0));

1474

}

1475

break;

1476

}

1477

case TCPCLV4_MSGTYPE_SESS_TERM: {

1478

offset += 1 + 1;

1479

break;

1480

}

1481

case TCPCLV4_MSGTYPE_XFER_SEGMENT: {

1482

if (tvb_reported_length_remaining(tvb, offset) < 1) {

1483

return 0;

1484

}

1485

uint8_t flags = tvb_get_uint8(tvb, offset);

1486

offset += 1;

1487

offset += 8;

1488

if (flags & TCPCLV4_TRANSFER_FLAG_START) {

1489

if (tvb_reported_length_remaining(tvb, offset) < 4) {

1490

return 0;

1491

}

1492

uint32_t extlist_len = tvb_get_uint32(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1493

offset += 4;

1494

if ((unsigned)tvb_reported_length_remaining(tvb, offset) < extlist_len) {

1495

return 0;

1496

}

1497

offset += extlist_len;

1498

}

1499

if (tvb_reported_length_remaining(tvb, offset) < 8) {

1500

return 0;

1501

}

1502

uint64_t data_len = tvb_get_uint64(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1503

offset += 8;

1504

const int data_len_clamp = get_clamped_length(data_len, NULL((void*)0), NULL((void*)0));

1505

if (ckd_add(&offset, offset, data_len_clamp)__builtin_add_overflow((offset), (data_len_clamp), (&offset
))) {

1506

THROW(ReportedBoundsError)except_throw(1, (3), ((void*)0));

1507

}

1508

break;

1509

}

1510

case TCPCLV4_MSGTYPE_XFER_ACK: {

1511

offset += 1 + 8 + 8;

1512

break;

1513

}

1514

case TCPCLV4_MSGTYPE_XFER_REFUSE: {

1515

offset += 1 + 8;

1516

break;

1517

}

1518

case TCPCLV4_MSGTYPE_KEEPALIVE: {

1519

break;

1520

}

1521

case TCPCLV4_MSGTYPE_MSG_REJECT: {

1522

offset += 1 + 1;

1523

break;

1524

}

1525

default:

1526

// no known message

1527

return 0;

1528

}

1529

return offset - init_offset;

1530

}

1531

1532

static int

1533

dissect_v4_msg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,

1534

tcpcl_dissect_ctx_t *ctx _U___attribute__((unused))) {

1535

int offset = 0;

1536

// Length of non-protocol 'payload' data in this message

1537

int payload_len = 0;

1538

1539

uint8_t msgtype = 0;

1540

const char *msgtype_name = NULL((void*)0);

1541

1542

proto_item *item_msg = proto_tree_add_item(tree, hf_tcpclv4_mhdr_tree, tvb, offset, 0, ENC_NA0x00000000);

1543

proto_tree *tree_msg = proto_item_add_subtree(item_msg, ett_tcpclv4_mhdr);

1544

1545

msgtype = tvb_get_uint8(tvb, offset);

1546

proto_tree_add_uint(tree_msg, hf_tcpclv4_mhdr_type, tvb, offset, 1, msgtype);

1547

offset += 1;

1548

msgtype_name = val_to_str(pinfo->pool, msgtype, v4_message_type_vals, "type 0x%02" PRIx32"x");

1549

wmem_strbuf_t *suffix_text = wmem_strbuf_new(pinfo->pool, NULL((void*)0));

1550

1551

switch(msgtype) {

1552

case TCPCLV4_MSGTYPE_SESS_INIT: {

1553

uint16_t keepalive = tvb_get_uint16(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1554

proto_tree_add_uint(tree_msg, hf_tcpclv4_sess_init_keepalive, tvb, offset, 2, keepalive);

1555

offset += 2;

1556

1557

uint64_t seg_mru = tvb_get_uint64(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1558

proto_tree_add_uint64(tree_msg, hf_tcpclv4_sess_init_seg_mru, tvb, offset, 8, seg_mru);

1559

offset += 8;

1560

1561

uint64_t xfer_mru = tvb_get_uint64(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1562

proto_tree_add_uint64(tree_msg, hf_tcpclv4_sess_init_xfer_mru, tvb, offset, 8, xfer_mru);

1563

offset += 8;

1564

1565

uint16_t nodeid_len = tvb_get_uint16(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1566

proto_tree_add_uint(tree_msg, hf_tcpclv4_sess_init_nodeid_len, tvb, offset, 2, nodeid_len);

1567

offset += 2;

1568

1569

{

1570

uint8_t *nodeid_data = tvb_get_string_enc(pinfo->pool, tvb, offset, nodeid_len, ENC_UTF_80x00000002);

1571

proto_tree_add_string(tree_msg, hf_tcpclv4_sess_init_nodeid_data, tvb, offset, nodeid_len, (const char *)nodeid_data);

1572

}

1573

offset += nodeid_len;

1574

1575

uint32_t extlist_len = tvb_get_uint32(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1576

proto_tree_add_uint(tree_msg, hf_tcpclv4_sess_init_extlist_len, tvb, offset, 4, extlist_len);

1577

offset += 4;

1578

1579

int extlist_offset = 0;

1580

while (extlist_offset < (int)extlist_len) {

1581

int extitem_offset = 0;

1582

proto_item *item_ext = proto_tree_add_item(tree_msg, hf_tcpclv4_sessext_tree, tvb, offset + extlist_offset, 0, ENC_NA0x00000000);

1583

proto_tree *tree_ext = proto_item_add_subtree(item_ext, ett_tcpclv4_sessext);

1584

1585

uint8_t extitem_flags = tvb_get_uint8(tvb, offset + extlist_offset + extitem_offset);

1586

proto_tree_add_bitmask(tree_ext, tvb, offset + extlist_offset + extitem_offset, hf_tcpclv4_sessext_flags, ett_tcpclv4_sessext_flags, v4_sessext_flags, ENC_BIG_ENDIAN0x00000000);

1587

extitem_offset += 1;

1588

const bool_Bool is_critical = (extitem_flags & TCPCLV4_EXTENSION_FLAG_CRITICAL);

1589

if (is_critical) {

1590

expert_add_info(pinfo, item_ext, &ei_tcpclv4_extitem_critical);

1591

}

1592

1593

uint16_t extitem_type = tvb_get_uint16(tvb, offset + extlist_offset + extitem_offset, ENC_BIG_ENDIAN0x00000000);

1594

proto_item *item_type = proto_tree_add_uint(tree_ext, hf_tcpclv4_sessext_type, tvb, offset + extlist_offset + extitem_offset, 2, extitem_type);

1595

extitem_offset += 2;

1596

1597

dissector_handle_t subdis = dissector_get_uint_handle(xfer_ext_dissectors, extitem_type);

1598

const char *subname = dissector_handle_get_description(subdis);

1599

if (subdis) {

1600

proto_item_set_text(item_type, "Item Type: %s (0x%04" PRIx16"x" ")", subname, extitem_type);

1601

}

1602

1603

uint16_t extitem_len = tvb_get_uint16(tvb, offset + extlist_offset + extitem_offset, ENC_BIG_ENDIAN0x00000000);

1604

proto_tree_add_uint(tree_ext, hf_tcpclv4_sessext_len, tvb, offset + extlist_offset + extitem_offset, 2, extitem_len);

1605

extitem_offset += 2;

1606

1607

tvbuff_t *extitem_tvb = tvb_new_subset_length(tvb, offset + extlist_offset + extitem_offset, extitem_len);

1608

proto_item *item_extdata = proto_tree_add_item(tree_ext, hf_tcpclv4_sessext_data, extitem_tvb, 0, tvb_captured_length(extitem_tvb), ENC_NA0x00000000);

1609

proto_tree *tree_extdata = proto_item_add_subtree(item_extdata, ett_tcpclv4_sessext_data);

1610

1611

int sublen = 0;

1612

if (subdis) {

1613

sublen = call_dissector_only(subdis, extitem_tvb, pinfo, tree_extdata, NULL((void*)0));

1614

}

1615

if (sublen == 0) {

1616

expert_add_info(pinfo, item_type, &ei_tcpclv4_invalid_sessext_type);

1617

}

1618

extitem_offset += extitem_len;

1619

1620

proto_item_set_len(item_ext, extitem_offset);

1621

extlist_offset += extitem_offset;

1622

1623

if (subname) {

1624

proto_item_append_text(item_ext, ": %s", subname);

1625

}

1626

else {

1627

proto_item_append_text(item_ext, ": Type 0x%04" PRIx16"x", extitem_type);

1628

}

1629

if (is_critical) {

1630

proto_item_append_text(item_ext, ", CRITICAL");

1631

}

1632

}

1633

// advance regardless of any internal offset processing

1634

offset += extlist_len;

1635

1636

if (ctx->tx_peer->sess_init_seen) {

1637

if (tcpcl_analyze_sequence) {

1638

if (!tcpcl_frame_loc_equal(ctx->tx_peer->sess_init_seen, ctx->cur_loc)) {

1639

expert_add_info(pinfo, item_msg, &ei_tcpclv4_sess_init_duplicate);

1640

}

1641

}

1642

}

1643

else {

1644

ctx->tx_peer->sess_init_seen = tcpcl_frame_loc_clone(wmem_file_scope(), ctx->cur_loc);

1645

ctx->tx_peer->keepalive = keepalive;

1646

ctx->tx_peer->segment_mru = seg_mru;

1647

ctx->tx_peer->transfer_mru = xfer_mru;

1648

}

1649

1650

break;

1651

}

1652

case TCPCLV4_MSGTYPE_SESS_TERM: {

1653

uint8_t flags = tvb_get_uint8(tvb, offset);

1654

proto_tree_add_bitmask(tree_msg, tvb, offset, hf_tcpclv4_sess_term_flags, ett_tcpclv4_sess_term_flags, v4_sess_term_flags, ENC_BIG_ENDIAN0x00000000);

1655

offset += 1;

1656

1657

uint8_t reason = tvb_get_uint8(tvb, offset);

1658

proto_tree_add_uint(tree_msg, hf_tcpclv4_sess_term_reason, tvb, offset, 1, reason);

1659

offset += 1;

1660

1661

if (ctx->tx_peer->sess_term_seen) {

1662

if (tcpcl_analyze_sequence) {

1663

if (!tcpcl_frame_loc_equal(ctx->tx_peer->sess_term_seen, ctx->cur_loc)) {

1664

expert_add_info(pinfo, item_msg, &ei_tcpclv4_sess_term_duplicate);

1665

}

1666

}

1667

}

1668

else {

1669

ctx->tx_peer->sess_term_seen = tcpcl_frame_loc_clone(wmem_file_scope(), ctx->cur_loc);

1670

ctx->tx_peer->sess_term_reason = reason;

1671

}

1672

1673

if (tcpcl_analyze_sequence) {

1674

if (ctx->rx_peer->sess_term_seen) {

1675

proto_item *item_rel = proto_tree_add_uint(tree_msg, hf_tcpclv4_sess_term_related, tvb, 0, 0, ctx->rx_peer->sess_term_seen->frame_num);

1676

proto_item_set_generated(item_rel);

1677

1678

// Is this message after the other SESS_TERM?

1679

if (tcpcl_frame_loc_compare(ctx->tx_peer->sess_term_seen, ctx->rx_peer->sess_term_seen, NULL((void*)0)) > 0) {

1680

if (!(flags & TCPCLV4_SESS_TERM_FLAG_REPLY)) {

1681

expert_add_info(pinfo, item_msg, &ei_tcpclv4_sess_term_reply_flag);

1682

}

1683

}

1684

}

1685

}

1686

1687

break;

1688

}

1689

case TCPCLV4_MSGTYPE_XFER_SEGMENT:{

1690

uint8_t flags = tvb_get_uint8(tvb, offset);

1691

proto_item *item_flags = proto_tree_add_bitmask(tree_msg, tvb, offset, hf_tcpclv4_xfer_flags, ett_tcpclv4_xfer_flags, v4_xfer_flags, ENC_BIG_ENDIAN0x00000000);

1692

offset += 1;

1693

1694

uint64_t xfer_id = tvb_get_uint64(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1695

proto_tree_add_uint64(tree_msg, hf_tcpclv4_xfer_id, tvb, offset, 8, xfer_id);

1696

offset += 8;

1697

1698

if (flags & TCPCLV4_TRANSFER_FLAG_START) {

1699

uint32_t extlist_len = tvb_get_uint32(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1700

proto_tree_add_uint(tree_msg, hf_tcpclv4_xfer_segment_extlist_len, tvb, offset, 4, extlist_len);

1701

offset += 4;

1702

1703

int extlist_offset = 0;

1704

while (extlist_offset < (int)extlist_len) {

1705

int extitem_offset = 0;

1706

proto_item *item_ext = proto_tree_add_item(tree_msg, hf_tcpclv4_xferext_tree, tvb, offset + extlist_offset, 0, ENC_NA0x00000000);

1707

proto_tree *tree_ext = proto_item_add_subtree(item_ext, ett_tcpclv4_xferext);

1708

1709

uint8_t extitem_flags = tvb_get_uint8(tvb, offset + extlist_offset + extitem_offset);

1710

proto_tree_add_bitmask(tree_ext, tvb, offset + extlist_offset + extitem_offset, hf_tcpclv4_xferext_flags, ett_tcpclv4_xferext_flags, v4_xferext_flags, ENC_BIG_ENDIAN0x00000000);

1711

extitem_offset += 1;

1712

const bool_Bool is_critical = (extitem_flags & TCPCLV4_EXTENSION_FLAG_CRITICAL);

1713

if (is_critical) {

1714

expert_add_info(pinfo, item_ext, &ei_tcpclv4_extitem_critical);

1715

}

1716

1717

uint16_t extitem_type = tvb_get_uint16(tvb, offset + extlist_offset + extitem_offset, ENC_BIG_ENDIAN0x00000000);

1718

proto_item *item_type = proto_tree_add_uint(tree_ext, hf_tcpclv4_xferext_type, tvb, offset + extlist_offset + extitem_offset, 2, extitem_type);

1719

extitem_offset += 2;

1720

1721

dissector_handle_t subdis = dissector_get_uint_handle(xfer_ext_dissectors, extitem_type);

1722

const char *subname = dissector_handle_get_description(subdis);

1723

if (subdis) {

1724

proto_item_set_text(item_type, "Item Type: %s (0x%04" PRIx16"x" ")", subname, extitem_type);

1725

}

1726

1727

uint16_t extitem_len = tvb_get_uint16(tvb, offset + extlist_offset + extitem_offset, ENC_BIG_ENDIAN0x00000000);

1728

proto_tree_add_uint(tree_ext, hf_tcpclv4_xferext_len, tvb, offset + extlist_offset + extitem_offset, 2, extitem_len);

1729

extitem_offset += 2;

1730

1731

tvbuff_t *extitem_tvb = tvb_new_subset_length(tvb, offset + extlist_offset + extitem_offset, extitem_len);

1732

proto_item *item_extdata = proto_tree_add_item(tree_ext, hf_tcpclv4_xferext_data, extitem_tvb, 0, tvb_captured_length(extitem_tvb), ENC_NA0x00000000);

1733

proto_tree *tree_extdata = proto_item_add_subtree(item_extdata, ett_tcpclv4_xferext_data);

1734

1735

tcpcl_frame_loc_t *extitem_loc = tcpcl_frame_loc_new(pinfo->pool, pinfo, extitem_tvb, 0);

1736

tcpcl_peer_associate_transfer(ctx->tx_peer, extitem_loc, xfer_id);

1737

1738

int sublen = 0;

1739

if (subdis) {

1740

sublen = call_dissector_only(subdis, extitem_tvb, pinfo, tree_extdata, NULL((void*)0));

1741

}

1742

if (sublen == 0) {

1743

expert_add_info(pinfo, item_type, &ei_tcpclv4_invalid_xferext_type);

1744

}

1745

extitem_offset += extitem_len;

1746

1747

proto_item_set_len(item_ext, extitem_offset);

1748

extlist_offset += extitem_offset;

1749

1750

if (subname) {

1751

proto_item_append_text(item_ext, ": %s", subname);

1752

}

1753

else {

1754

proto_item_append_text(item_ext, ": Type 0x%04" PRIx16"x", extitem_type);

1755

}

1756

if (is_critical) {

1757

proto_item_append_text(item_ext, ", CRITICAL");

1758

}

1759

}

1760

// advance regardless of any internal offset processing

1761

offset += extlist_len;

1762

}

1763

1764

uint64_t data_len = tvb_get_uint64(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1765

proto_item *item_len = proto_tree_add_uint64(tree_msg, hf_tcpclv4_xfer_segment_data_len, tvb, offset, 8, data_len);

1766

offset += 8;

1767

1768

if (data_len > ctx->rx_peer->segment_mru) {

1769

expert_add_info(pinfo, item_len, &ei_tcpclv4_xfer_seg_over_seg_mru);

1770

}

1771

const int data_len_clamp = get_clamped_length(data_len, pinfo, item_len);

1772

1773

// Treat data as payload layer

1774

const int data_offset = offset;

1775

proto_tree_add_item(tree_msg, hf_tcpclv4_xfer_segment_data, tvb, offset, data_len_clamp, ENC_NA0x00000000);

1776

offset += data_len_clamp;

1777

payload_len = data_len_clamp;

1778

1779

wmem_strbuf_append_printf(suffix_text, ", Xfer ID: %" PRIi64"l" "i", xfer_id);

1780

1781

if (flags) {

1782

wmem_strbuf_append(suffix_text, ", Flags: ");

1783

bool_Bool sep = false0;

1784

if (flags & TCPCLV4_TRANSFER_FLAG_START) {

1785

wmem_strbuf_append(suffix_text, "START");

1786

sep = true1;

1787

}

1788

if (flags & TCPCLV4_TRANSFER_FLAG_END) {

1789

if (sep) {

1790

wmem_strbuf_append(suffix_text, "|");

1791

}

1792

wmem_strbuf_append(suffix_text, "END");

1793

}

1794

}

1795

1796

if (tcpcl_analyze_sequence) {

1797

transfer_add_segment(ctx, xfer_id, flags, data_len, pinfo, tvb, tree_msg, item_msg, item_flags);

1798

}

1799

1800

if (tcpcl_desegment_transfer) {

1801

// Reassemble the segments

1802

fragment_head *xferload_frag_msg = fragment_add_seq_next(

1803

&xfer_reassembly_table,

1804

tvb, data_offset,

1805

pinfo, 0, &xfer_id,

1806

data_len_clamp,

1807

!(flags & TCPCLV4_TRANSFER_FLAG_END)

1808

);

1809

ctx->xferload = process_reassembled_data(

1810

tvb, data_offset, pinfo,

1811

"Reassembled Transfer",

1812

xferload_frag_msg,

1813

&xfer_frag_items,

1814

NULL((void*)0),

1815

proto_tree_get_parent_tree(tree)

1816

);

1817

}

1818

1819

break;

1820

}

1821

case TCPCLV4_MSGTYPE_XFER_ACK:{

1822

uint8_t flags = tvb_get_uint8(tvb, offset);

1823

proto_item *item_flags = proto_tree_add_bitmask(tree_msg, tvb, offset, hf_tcpclv4_xfer_flags, ett_tcpclv4_xfer_flags, v4_xfer_flags, ENC_BIG_ENDIAN0x00000000);

1824

offset += 1;

1825

1826

uint64_t xfer_id = tvb_get_uint64(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1827

proto_tree_add_uint64(tree_msg, hf_tcpclv4_xfer_id, tvb, offset, 8, xfer_id);

1828

offset += 8;

1829

1830

uint64_t ack_len = tvb_get_uint64(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1831

proto_tree_add_uint64(tree_msg, hf_tcpclv4_xfer_ack_ack_len, tvb, offset, 8, ack_len);

1832

offset += 8;

1833

1834

wmem_strbuf_append_printf(suffix_text, ", Xfer ID: %" PRIi64"l" "i", xfer_id);

1835

1836

if (flags) {

1837

wmem_strbuf_append(suffix_text, ", Flags: ");

1838

bool_Bool sep = false0;

1839

if (flags & TCPCLV4_TRANSFER_FLAG_START) {

1840

wmem_strbuf_append(suffix_text, "START");

1841

sep = true1;

1842

}

1843

if (flags & TCPCLV4_TRANSFER_FLAG_END) {

1844

if (sep) {

1845

wmem_strbuf_append(suffix_text, "|");

1846

}

1847

wmem_strbuf_append(suffix_text, "END");

1848

}

1849

}

1850

1851

if (tcpcl_analyze_sequence) {

1852

transfer_add_ack(ctx, xfer_id, flags, ack_len, pinfo, tvb, tree_msg, item_msg, item_flags);

1853

}

1854

1855

break;

1856

}

1857

case TCPCLV4_MSGTYPE_XFER_REFUSE: {

1858

uint8_t reason = tvb_get_uint8(tvb, offset);

1859

proto_tree_add_uint(tree_msg, hf_tcpclv4_xfer_refuse_reason, tvb, offset, 1, reason);

1860

offset += 1;

1861

1862

uint64_t xfer_id = tvb_get_uint64(tvb, offset, ENC_BIG_ENDIAN0x00000000);

1863

proto_tree_add_uint64(tree_msg, hf_tcpclv4_xfer_id, tvb, offset, 8, xfer_id);

1864

offset += 8;

1865

1866

wmem_strbuf_append_printf(suffix_text, ", Xfer ID: %" PRIi64"l" "i", xfer_id);

1867

1868

if (tcpcl_analyze_sequence) {

1869

transfer_add_refuse(ctx, xfer_id, pinfo, tvb, tree_msg, item_msg);

1870

}

1871

1872

break;

1873

}

1874

case TCPCLV4_MSGTYPE_KEEPALIVE: {

1875

break;

1876

}

1877

case TCPCLV4_MSGTYPE_MSG_REJECT: {

1878

uint8_t reason = tvb_get_uint8(tvb, offset);

1879

proto_tree_add_uint(tree_msg, hf_tcpclv4_msg_reject_reason, tvb, offset, 1, reason);

1880

offset += 1;

1881

1882

uint8_t rej_head = tvb_get_uint8(tvb, offset);

1883

proto_tree_add_uint(tree_msg, hf_tcpclv4_msg_reject_head, tvb, offset, 1, rej_head);

1884

offset += 1;

1885

1886

break;

1887

}

1888

default:

1889

expert_add_info(pinfo, item_msg, &ei_tcpclv4_invalid_msg_type);

1890

break;

1891

}

1892

1893

proto_item_set_len(item_msg, offset - payload_len);

1894

proto_item_append_text(item_msg, ": %s%s", msgtype_name, wmem_strbuf_get_str(suffix_text));

1895

wmem_strbuf_finalize(suffix_text);

1896

1897

if (tcpcl_analyze_sequence) {

1898

if (!(ctx->tx_peer->chdr_missing)) {

1899

// assume the capture is somewhere in the middle

1900

if (!(ctx->tx_peer->sess_init_seen)) {

1901

expert_add_info(pinfo, item_msg, &ei_tcpclv4_sess_init_missing);

1902

}

1903

else {

1904

// This message is before SESS_INIT (but is not the SESS_INIT)

1905

const int cmp_sess_init = tcpcl_frame_loc_compare(ctx->cur_loc, ctx->tx_peer->sess_init_seen, NULL((void*)0));

1906

if (((msgtype == TCPCLV4_MSGTYPE_SESS_INIT) && (cmp_sess_init < 0))

1907

|| ((msgtype != TCPCLV4_MSGTYPE_SESS_INIT) && (cmp_sess_init <= 0))) {

1908

expert_add_info(pinfo, item_msg, &ei_tcpclv4_sess_init_missing);

1909

}

1910

}

1911

}

1912

}

1913

1914

if (msgtype_name) {

1915

col_append_sep_str(pinfo->cinfo, COL_INFO, NULL((void*)0), msgtype_name);

1916

}

1917

1918

try_negotiate(ctx, pinfo);

1919

// Show negotiation results

1920

if (msgtype == TCPCLV4_MSGTYPE_SESS_INIT) {

1921

if (ctx->convo->sess_negotiated) {

1922

if (ctx->rx_peer->sess_init_seen){

1923

proto_item *item_nego = proto_tree_add_uint(tree_msg, hf_tcpclv4_sess_init_related, tvb, 0, 0, ctx->rx_peer->sess_init_seen->frame_num);

1924

proto_item_set_generated(item_nego);

1925

}

1926

{

1927

proto_item *item_nego = proto_tree_add_uint(tree_msg, hf_tcpclv4_negotiate_keepalive, tvb, 0, 0, ctx->convo->sess_keepalive);

1928

proto_item_set_generated(item_nego);

1929

}

1930

}

1931

}

1932

1933

return offset;

1934

}

1935

1936

/** Function to extract a message length, or zero if not valid.

1937

* This will call set_chdr_missing() if valid.

1938

*/

1939

typedef unsigned (*chdr_missing_check)(packet_info *, tvbuff_t *, int offset, tcpcl_dissect_ctx_t *);

1940

1941

/** Inspect a single segment to determine if this looks like a TLS record set.

1942

*/

1943

static unsigned chdr_missing_tls(packet_info *pinfo, tvbuff_t *tvb, int offset,

1944

tcpcl_dissect_ctx_t *ctx) {

1945

if (ctx->convo->session_tls_start) {

1946

// already in a TLS context

1947

return 0;

1948

}

1949

1950

// similar heuristics to is_sslv3_or_tls() from packet-tls.c

1951

if (tvb_captured_length(tvb) < 5) {

1952

return 0;

1953

}

1954

uint8_t rectype = tvb_get_uint8(tvb, offset);

1955

uint16_t recvers = tvb_get_uint16(tvb, offset+1, ENC_BIG_ENDIAN0x00000000);

1956

uint16_t reclen = tvb_get_uint16(tvb, offset+1+2, ENC_BIG_ENDIAN0x00000000);

1957

1958

switch(rectype) {

1959

// These overlap with TCPCLV3_DATA_SEGMENT but have invalid flags

1960

// They are valid but unallocated v4 message type codes

1961

case SSL_ID_ALERT:

1962

case SSL_ID_HANDSHAKE:

1963

case SSL_ID_APP_DATA:

1964

case SSL_ID_HEARTBEAT:

1965

break;

1966

default:

1967

return 0;

1968

}

1969

if ((recvers & 0xFF00) != 0x0300) {

1970

return 0;

1971

}

1972

if (reclen == 0 || reclen >= TLS_MAX_RECORD_LENGTH0x4000 + 2048) {

1973

return 0;

1974

}

1975

1976

// post-STARTTLS

1977

ctx->convo->session_use_tls = true1;

1978

ctx->convo->session_tls_start = tcpcl_frame_loc_clone(wmem_file_scope(), ctx->cur_loc);

1979

ssl_starttls_post_ack(tls_handle, pinfo, tcpcl_handle);

1980

1981

return tvb_reported_length(tvb);

1982

1983

}

1984

1985

static unsigned chdr_missing_v3(packet_info *pinfo, tvbuff_t *tvb, int offset,

1986

tcpcl_dissect_ctx_t *ctx) {

1987

unsigned sublen = get_v3_msg_len(pinfo, tvb, offset, ctx);

1988

if (sublen > 0) {

1989

set_chdr_missing(ctx->tx_peer, 3);

1990

}

1991

return sublen;

1992

}

1993

1994

static unsigned chdr_missing_v4(packet_info *pinfo, tvbuff_t *tvb, int offset,

1995

tcpcl_dissect_ctx_t *ctx) {

1996

unsigned sublen = get_v4_msg_len(pinfo, tvb, offset, ctx);

1997

if (sublen > 0) {

1998

set_chdr_missing(ctx->tx_peer, 4);

1999

}

2000

return sublen;

2001

}

2002

2003

static const chdr_missing_check chdr_missing_v3first[] = {

2004

&chdr_missing_tls,

2005

&chdr_missing_v3,

2006

&chdr_missing_v4,

2007

NULL((void*)0)

2008

};

2009

static const chdr_missing_check chdr_missing_v3only[] = {

2010

&chdr_missing_v3,

2011

NULL((void*)0)

2012

};

2013

static const chdr_missing_check chdr_missing_v4first[] = {

2014

&chdr_missing_tls,

2015

&chdr_missing_v4,

2016

&chdr_missing_v3,

2017

NULL((void*)0)

2018

};

2019

static const chdr_missing_check chdr_missing_v4only[] = {

2020

&chdr_missing_v4,

2021

NULL((void*)0)

2022

};

2023

2024

static unsigned get_message_len(packet_info *pinfo, tvbuff_t *tvb, int ext_offset, void *data _U___attribute__((unused))) {

2025

tcpcl_dissect_ctx_t *ctx = tcpcl_dissect_ctx_get(tvb, pinfo, ext_offset);

2026

if (!ctx) {

2027

return 0;

2028

}

2029

const unsigned init_offset = ext_offset;

2030

unsigned offset = ext_offset;

2031

2032

if (ctx->is_contact) {

2033

if (tvb_memeql(tvb, offset, magic, sizeof(magic)) != 0) {

2034

// Optional heuristic dissection of a message

2035

const chdr_missing_check *checks = NULL((void*)0);

2036

switch (tcpcl_chdr_missing) {

2037

case CHDRMSN_V3FIRST:

2038

checks = chdr_missing_v3first;

2039

break;

2040

case CHDRMSN_V3ONLY:

2041

checks = chdr_missing_v3only;

2042

break;

2043

case CHDRMSN_V4FIRST:

2044

checks = chdr_missing_v4first;

2045

break;

2046

case CHDRMSN_V4ONLY:

2047

checks = chdr_missing_v4only;

2048

break;

2049

}

2050

if (checks) {

2051

for (const chdr_missing_check *chk = checks; *chk; ++chk) {

2052

unsigned sublen = (**chk)(pinfo, tvb, offset, ctx);

2053

if (sublen > 0) {

2054

return sublen;

2055

}

2056

}

2057

// no match

2058

return 0;

2059

}

2060

else {

2061

// require the contact header

2062

const unsigned available = tvb_captured_length(tvb) - offset;

2063

if (available < sizeof(magic) + 1) {

2064

return DESEGMENT_ONE_MORE_SEGMENT0x0fffffff;

2065

}

2066

// sufficient size available but no match

2067

return 0;

2068

}

2069

}

2070

offset += sizeof(magic);

2071

2072

uint8_t version = tvb_get_uint8(tvb, offset);

2073

offset += 1;

2074

if (version == 3) {

2075

offset += 3; // flags + keepalive

2076

uint64_t eid_len;

2077

const unsigned bytecount = tvb_get_sdnv(tvb, offset, &eid_len);

2078

const int len_clamp = get_clamped_length(eid_len, NULL((void*)0), NULL((void*)0));

2079

offset += bytecount + len_clamp;

2080

}

2081

else if (version == 4) {

2082

offset += 1; // flags

2083

}

2084

else {

2085

return 0;

2086

}

2087

}

2088

else {

2089

if (ctx->tx_peer->version == 3) {

2090

unsigned sublen = get_v3_msg_len(pinfo, tvb, offset, ctx);

2091

if (sublen == 0) {

2092

return 0;

2093

}

2094

offset += sublen;

2095

}

2096

else if (ctx->tx_peer->version == 4) {

2097

unsigned sublen = get_v4_msg_len(pinfo, tvb, offset, ctx);

2098

if (sublen == 0) {

2099

return 0;

2100

}

2101

offset += sublen;

2102

}

2103

else {

2104

return 0;

2105

}

2106

}

2107

const int needlen = offset - init_offset;

2108

return needlen;

2109

}

2110

2111

static int dissect_message(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U___attribute__((unused))) {

2112

bool_Bool is_new_item_tcpcl = false0;

2113

int offset = 0;

2114

tcpcl_dissect_ctx_t *ctx = tcpcl_dissect_ctx_get(tvb, pinfo, offset);

2115

if (!ctx) {

2116

return 0;

2117

}

2118

2119

{

2120

const char *proto_name = col_get_text(pinfo->cinfo, COL_PROTOCOL);

2121

if (g_strcmp0(proto_name, proto_name_tcpcl) != 0) {

2122

col_set_str(pinfo->cinfo, COL_PROTOCOL, proto_name_tcpcl);

2123

col_clear(pinfo->cinfo, COL_INFO);

2124

}

2125

}

2126

2127

// Don't add more than one TCPCL tree item

2128

proto_item *item_tcpcl;

2129

proto_tree *tree_tcpcl;

2130

if (tree && (tree->last_child)

2131

&& (PITEM_HFINFO(tree->last_child)((tree->last_child)->hfinfo)->id == proto_tcpcl)) {

2132

item_tcpcl = tree->last_child;

2133

tree_tcpcl = proto_item_get_subtree(item_tcpcl);

2134

}

2135

else {

2136

item_tcpcl = proto_tree_add_item(tree, proto_tcpcl, tvb, 0, -1, ENC_NA0x00000000);

2137

tree_tcpcl = proto_item_add_subtree(item_tcpcl, ett_proto_tcpcl);

2138

is_new_item_tcpcl = true1;

2139

}

2140

2141

if (ctx->tx_peer->chdr_missing) {

2142

expert_add_info(pinfo, item_tcpcl, &ei_chdr_missing);

2143

}

2144

if (ctx->is_contact) {

2145

col_append_sep_str(pinfo->cinfo, COL_INFO, NULL((void*)0), "Contact Header");

2146

2147

proto_item *item_chdr = proto_tree_add_item(tree_tcpcl, hf_chdr_tree, tvb, offset, -1, ENC_NA0x00000000);

2148

proto_tree *tree_chdr = proto_item_add_subtree(item_chdr, ett_chdr);

2149

2150

proto_item *item_magic = proto_tree_add_item(tree_chdr, hf_chdr_magic, tvb, offset, sizeof(magic), ENC_NA0x00000000);

2151

if (tvb_memeql(tvb, offset, magic, sizeof(magic)) != 0) {

2152

expert_add_info(pinfo, item_magic, &ei_invalid_magic);

2153

return 0;

2154

}

2155

offset += sizeof(magic);

2156

2157

ctx->tx_peer->version = tvb_get_uint8(tvb, offset);

2158

proto_item *item_version = proto_tree_add_uint(tree_chdr, hf_chdr_version, tvb, offset, 1, ctx->tx_peer->version);

2159

offset += 1;

2160

2161

// Mark or check version match

2162

if (!ctx->convo->version) {

2163

ctx->convo->version = wmem_new(wmem_file_scope(), uint8_t)((uint8_t*)wmem_alloc((wmem_file_scope()), sizeof(uint8_t)));

2164

*(ctx->convo->version) = ctx->tx_peer->version;

2165

}

2166

else if (*(ctx->convo->version) != ctx->tx_peer->version) {

2167

expert_add_info(pinfo, item_version, &ei_mismatch_version);

2168

}

2169

2170

if ((ctx->tx_peer->version < 3) || (ctx->tx_peer->version > 4)) {

2171

expert_add_info(pinfo, item_version, &ei_invalid_version);

2172

return offset;

2173

}

2174

2175

if (ctx->tx_peer->version == 3) {

2176

/* Subtree to expand the bits in the Contact Header Flags */

2177

proto_tree_add_bitmask(tree_chdr, tvb, offset, hf_tcpclv3_chdr_flags, ett_tcpclv3_chdr_flags, v3_chdr_flags, ENC_BIG_ENDIAN0x00000000);

2178

offset++;

2179

2180

proto_tree_add_item(tree_chdr, hf_tcpclv3_chdr_keep_alive, tvb, offset, 2, ENC_BIG_ENDIAN0x00000000);

2181

offset += 2;

2182

2183

/*

2184

* New format Contact header has length field followed by EID.

2185

*/

2186

uint64_t eid_length;

2187

int sdnv_length;

2188

proto_item *sub_item = proto_tree_add_item_ret_varint(tree_chdr, hf_tcpclv3_chdr_local_eid_length, tvb, offset, -1, ENC_VARINT_SDNV0x00000010, &eid_length, &sdnv_length);

2189

if (sdnv_length == 0) {

2190

expert_add_info(pinfo, sub_item, &ei_tcpclv3_eid_length);

2191

return 0;

2192

}

2193

offset += sdnv_length;

2194

const int eid_len_clamp = get_clamped_length(eid_length, pinfo, sub_item);

2195

2196

proto_tree_add_item(tree_chdr, hf_tcpclv3_chdr_local_eid, tvb, offset, eid_len_clamp, ENC_ASCII0x00000000);

2197

offset += eid_len_clamp;

2198

2199

// assumed parameters

2200

ctx->tx_peer->segment_mru = UINT64_MAX(18446744073709551615UL);

2201

ctx->tx_peer->transfer_mru = UINT64_MAX(18446744073709551615UL);

2202

}

2203

else if (ctx->tx_peer->version == 4) {

2204

uint8_t flags = tvb_get_uint8(tvb, offset);

2205

proto_tree_add_bitmask(tree_chdr, tvb, offset, hf_tcpclv4_chdr_flags, ett_tcpclv4_chdr_flags, v4_chdr_flags, ENC_BIG_ENDIAN0x00000000);

2206

offset += 1;

2207

2208

ctx->tx_peer->can_tls = (flags & TCPCLV4_CONTACT_FLAG_CANTLS);

2209

}

2210

2211

proto_item_set_len(item_chdr, offset);

2212

2213

if (ctx->tx_peer->chdr_seen) {

2214

if (tcpcl_analyze_sequence) {

2215

if (!tcpcl_frame_loc_equal(ctx->tx_peer->chdr_seen, ctx->cur_loc)) {

2216

expert_add_info(pinfo, item_chdr, &ei_chdr_duplicate);

2217

}

2218

}

2219

}

2220

else {

2221

ctx->tx_peer->chdr_seen = tcpcl_frame_loc_clone(wmem_file_scope(), ctx->cur_loc);

2222

}

2223

2224

try_negotiate(ctx, pinfo);

2225

// Show negotiation results

2226

if (ctx->convo->contact_negotiated) {

2227

if (ctx->rx_peer->chdr_seen) {

2228

proto_item *item_nego = proto_tree_add_uint(tree_chdr, hf_chdr_related, tvb, 0, 0, ctx->rx_peer->chdr_seen->frame_num);

2229

proto_item_set_generated(item_nego);

2230

}

2231

if (ctx->tx_peer->version == 4) {

2232

proto_item *item_nego = proto_tree_add_boolean(tree_chdr, hf_tcpclv4_negotiate_use_tls, tvb, 0, 0, ctx->convo->session_use_tls);

2233

proto_item_set_generated(item_nego);

2234

}

2235

}

2236

}

2237

else {

2238

if (ctx->tx_peer->version == 3) {

2239

offset += dissect_v3_msg(tvb, pinfo, tree_tcpcl, ctx);

2240

}

2241

else if (ctx->tx_peer->version == 4) {

2242

offset += dissect_v4_msg(tvb, pinfo, tree_tcpcl, ctx);

2243

}

2244

}

2245

2246

if (is_new_item_tcpcl) {

2247

proto_item_set_len(item_tcpcl, offset);

2248

proto_item_append_text(item_tcpcl, " Version %d", ctx->tx_peer->version);

2249

}

2250

else {

2251

const int item_len = proto_item_get_len(item_tcpcl);

2252

proto_item_set_len(item_tcpcl, item_len + offset);

2253

}

2254

2255

if (ctx->xferload) {

2256

col_append_str(pinfo->cinfo, COL_INFO, " [Bundle]");

2257

2258

if (tcpcl_decode_bundle) {

2259

if (bundle_handle) {

2260

call_dissector(

2261

bundle_handle,

2262

ctx->xferload,

2263

pinfo,

2264

tree

2265

);

2266

}

2267

}

2268

}

2269

2270

return offset;

2271

}

2272

2273

static int

2274

dissect_tcpcl(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U___attribute__((unused)))

2275

{

2276

/* Retrieve information from conversation, or add it if it isn't

2277

* there yet */

2278

conversation_t *convo = find_or_create_conversation(pinfo);

2279

tcpcl_conversation_t *tcpcl_convo = (tcpcl_conversation_t *)conversation_get_proto_data(convo, proto_tcpcl);

2280

if (!tcpcl_convo) {

2281

tcpcl_convo = tcpcl_conversation_new();

2282

conversation_add_proto_data(convo, proto_tcpcl, tcpcl_convo);

2283

// Assume the first source (i.e. TCP initiator) is the active node

2284

copy_address_wmem(wmem_file_scope(), &(tcpcl_convo->active->addr), &(pinfo->src));

2285

tcpcl_convo->active->port = pinfo->srcport;

2286

copy_address_wmem(wmem_file_scope(), &(tcpcl_convo->passive->addr), &(pinfo->dst));

2287

tcpcl_convo->passive->port = pinfo->destport;

2288

}

2289

2290

tcp_dissect_pdus(tvb, pinfo, tree, true1, 1, get_message_len, dissect_message, NULL((void*)0));

2291

2292

const unsigned buflen = tvb_captured_length(tvb);

2293

return buflen;

2294

}

2295

2296

static bool_Bool

2297

dissect_tcpcl_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)

2298

{

2299

if (tvb_reported_length(tvb) < minimum_chdr_size) {

2300

return false0;

2301

}

2302

if (tvb_memeql(tvb, 0, magic, sizeof(magic)) != 0) {

2303

return false0;

2304

}

2305

2306

// treat the rest of the connection as TCPCL

2307

conversation_t *convo = find_or_create_conversation(pinfo);

2308

conversation_set_dissector(convo, tcpcl_handle);

2309

2310

dissect_tcpcl(tvb, pinfo, tree, data);

2311

return true1;

2312

}

2313

2314

static int dissect_xferext_transferlen(tvbuff_t *tvb, packet_info *pinfo _U___attribute__((unused)), proto_tree *tree, void *data _U___attribute__((unused))) {

2315

int offset = 0;

2316

tcpcl_dissect_ctx_t *ctx = tcpcl_dissect_ctx_get(tvb, pinfo, offset);

2317

if (!ctx) {

2318

return 0;

2319

}

2320

2321

uint64_t total_len = tvb_get_uint64(tvb, offset, ENC_BIG_ENDIAN0x00000000);

2322

proto_item *item_len = proto_tree_add_uint64(tree, hf_tcpclv4_xferext_transferlen_total_len, tvb, offset, 8, total_len);

2323

offset += 8;

2324

if (total_len > ctx->rx_peer->transfer_mru) {

2325

expert_add_info(pinfo, item_len, &ei_tcpclv4_xferload_over_xfer_mru);

2326

}

2327

2328

if (tcpcl_analyze_sequence) {

2329

uint64_t *xfer_id = wmem_map_lookup(ctx->tx_peer->frame_loc_to_transfer, ctx->cur_loc);

2330

if (xfer_id) {

2331

tcpcl_transfer_t *xfer = get_or_create_transfer_t(ctx->tx_peer->transfers, *xfer_id);

2332

xfer->total_length = wmem_new(wmem_file_scope(), uint64_t)((uint64_t*)wmem_alloc((wmem_file_scope()), sizeof(uint64_t))
);

2333

*(xfer->total_length) = total_len;

2334

}

2335

}

2336

2337

return offset;

2338

}

2339

2340

static int dissect_othername_bundleeid(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U___attribute__((unused))) {

2341

int offset = 0;

2342

asn1_ctx_t actx;

2343

asn1_ctx_init(&actx, ASN1_ENC_BER, true1, pinfo);

2344

offset += dissect_ber_restricted_string(

2345

false0, BER_UNI_TAG_IA5String22,

2346

&actx, tree, tvb, offset, hf_othername_bundleeid, NULL((void*)0)

2347

);

2348

return offset;

2349

}

2350

2351

/// Re-initialize after a configuration change

2352

static void reinit_tcpcl(void) {

2353

}

2354

2355

void

2356

proto_register_tcpcl(void)

2357

{

2358

expert_module_t *expert_tcpcl;

2359

2360

proto_tcpcl = proto_register_protocol("DTN TCP Convergence Layer Protocol", "TCPCL", "tcpcl");

2361

2362

proto_tcpcl_exts = proto_register_protocol_in_name_only(

2363

"TCPCL Extension Subdissectors",

2364

"TCPCL Extension Subdissectors",

2365

"tcpcl_exts",

2366

proto_tcpcl,

2367

FT_PROTOCOL

2368

);

2369

2370

proto_register_field_array(proto_tcpcl, hf_tcpcl, array_length(hf_tcpcl)(sizeof (hf_tcpcl) / sizeof (hf_tcpcl)[0]));

2371

proto_register_subtree_array(ett, array_length(ett)(sizeof (ett) / sizeof (ett)[0]));

2372

expert_tcpcl = expert_register_protocol(proto_tcpcl);

2373

expert_register_field_array(expert_tcpcl, ei_tcpcl, array_length(ei_tcpcl)(sizeof (ei_tcpcl) / sizeof (ei_tcpcl)[0]));

2374

2375

tcpcl_handle = register_dissector("tcpcl", dissect_tcpcl, proto_tcpcl);

2376

sess_ext_dissectors = register_dissector_table("tcpcl.v4.sess_ext", "TCPCLv4 Session Extension", proto_tcpcl, FT_UINT16, BASE_HEX);

2377

xfer_ext_dissectors = register_dissector_table("tcpcl.v4.xfer_ext", "TCPCLv4 Transfer Extension", proto_tcpcl, FT_UINT16, BASE_HEX);

2378

2379

module_t *module_tcpcl = prefs_register_protocol(proto_tcpcl, reinit_tcpcl);

2380

prefs_register_enum_preference(

2381

module_tcpcl,

2382

"allow_chdr_missing",

2383

"Allow missing Contact Header",

2384

"Whether the TCPCL dissector should use heuristic "

2385

"dissection of messages in the absence of a Contact Header "

2386

"(if the capture misses the start of session).",

2387

&tcpcl_chdr_missing,

2388

chdr_missing_choices,

2389

false0

2390

);

2391

prefs_register_bool_preference(

2392

module_tcpcl,

2393

"analyze_sequence",

2394

"Analyze message sequences",

2395

"Whether the TCPCL dissector should analyze the sequencing of "

2396

"the messages within each session.",

2397

&tcpcl_analyze_sequence

2398

);

2399

prefs_register_bool_preference(

2400

module_tcpcl,

2401

"desegment_transfer",

2402

"Reassemble the segments of each transfer",

2403

"Whether the TCPCL dissector should combine the sequential segments "

2404

"of a transfer into the full bundle being transferred."

2405

"To use this option, you must also enable "

2406

"\"Allow subdissectors to reassemble TCP streams\" "

2407

"in the TCP protocol settings.",

2408

&tcpcl_desegment_transfer

2409

);

2410

prefs_register_bool_preference(

2411

module_tcpcl,

2412

"decode_bundle",

2413

"Decode bundle data",

2414

"If enabled, the transfer bundle will be decoded.",

2415

&tcpcl_decode_bundle

2416

);

2417

2418

reassembly_table_register(

2419

&xfer_reassembly_table,

2420

&xfer_reassembly_table_functions

2421

);

2422

2423

}

2424

2425

void

2426

proto_reg_handoff_tcpcl(void)

2427

{

2428

tls_handle = find_dissector_add_dependency("tls", proto_tcpcl);

2429

bundle_handle = find_dissector("bundle");

2430

2431

dissector_add_uint_with_preference("tcp.port", BUNDLE_PORT4556, tcpcl_handle);

2432

heur_dissector_add("tcp", dissect_tcpcl_heur, "TCPCL over TCP", "tcpcl_tcp", proto_tcpcl, HEURISTIC_ENABLE);

2433

2434

/* Packaged extensions */

2435

{

2436

dissector_handle_t dis_h = create_dissector_handle_with_name_and_description(dissect_xferext_transferlen, proto_tcpcl_exts, NULL((void*)0), "Transfer Length");

2437

dissector_add_uint("tcpcl.v4.xfer_ext", TCPCLV4_XFEREXT_TRANSFER_LEN, dis_h);

2438

}

2439

2440

register_ber_oid_dissector("1.3.6.1.5.5.7.3.35", NULL((void*)0), proto_tcpcl_exts, "id-kp-bundleSecurity");

2441

register_ber_oid_dissector("1.3.6.1.5.5.7.8.11", dissect_othername_bundleeid, proto_tcpcl_exts, "id-on-bundleEID");

2442

2443

reinit_tcpcl();

2444

}

2445

2446

/*

2447

* Editor modelines - https://www.wireshark.org/tools/modelines.html

2448

*

2449

* Local variables:

2450

* c-basic-offset: 4

2451

* tab-width: 8

2452

* indent-tabs-mode: nil

2453

* End:

2454

*

2455

* vi: set shiftwidth=4 tabstop=8 expandtab:

2456

* :indentSize=4:tabSize=8:noTabs=true:

2457

*/

File:	builds/wireshark/wireshark/epan/dissectors/packet-tcpcl.c
Warning:	line 1114, column 9 Value stored to 'frm' is never read

Bug Summary

Annotated Source Code