#include <wireshark.h>
#include <time.h>
#include <wsutil/array.h>
#include <wsutil/buffer.h>
#include <wsutil/nstime.h>
#include <wsutil/inet_addr.h>
#include <wsutil/file_compressed.h>
#include "wtap_opttypes.h"

Classes
struct	eth_phdr

struct	dte_dce_phdr

struct	isdn_phdr

struct	atm_phdr

struct	ascend_phdr

struct	p2p_phdr

struct	ieee_802_11_fhss

struct	ieee_802_11b

struct	ieee_802_11a

struct	ieee_802_11g

struct	ieee_802_11n

struct	ieee_802_11ac

struct	ieee_802_11ad

struct	ieee_802_11ax

struct	ieee_802_11be_user_info

struct	ieee_802_11be

union	ieee_802_11_phy_info
	Union representing physical layer information for IEEE 802.11 variants. More...

struct	ieee_802_11_phdr

struct	cosine_phdr

struct	irda_phdr

struct	nettl_phdr

struct	mtp2_phdr

union	k12_input_info_t
	Pseudo-header metadata for packets in K12 capture files. More...

struct	k12_phdr

struct	lapd_phdr
	LAPD pseudo-header for packet metadata. More...

struct	catapult_dct2000_phdr
	Pseudo-header for Catapult DCT2000 captures. More...

struct	erf_phdr

struct	erf_ehdr

struct	wtap_erf_eth_hdr

struct	erf_mc_phdr
	Extended pseudo-header for ERF multi-channel (MC) packet records. More...

struct	sita_phdr

struct	bthci_phdr

struct	btmon_phdr

struct	l1event_phdr

struct	i2c_phdr

struct	gsm_um_phdr

struct	nstr_phdr

struct	nokia_phdr

struct	llcp_phdr

struct	logcat_phdr

struct	netmon_phdr
	Pseudo-header metadata for packets captured in NetMon (Network Monitor) files. More...

union	netmon_phdr::sub_wtap_pseudo_header
	Protocol-specific subheader union. More...

struct	procmon_phdr

struct	ber_phdr

struct	mmodule_phdr

union	wtap_pseudo_header

struct	wtap_packet_header

struct	wtap_ft_specific_header

struct	wtap_syscall_header

struct	wtap_systemd_journal_export_header

struct	wtap_custom_block_header

struct	wtap_rec

struct	hashipv4

struct	hashipv6

struct	addrinfo_lists

struct	wtap_dump_params

struct	wtap_wslua_file_info

struct	file_extension_info
	For registering extensions used for file formats. More...

struct	open_info
	Information about a given file type that applies to all subtypes of the file type. More...

struct	supported_option_type
	Entry describing support level for a specific option type. More...

struct	supported_block_type

struct	file_type_subtype_info

struct	wtap_plugin
	Plugin registration callback table. More...

Macros
#define	WTAP_ENCAP_NONE -2

#define	WTAP_ENCAP_PER_PACKET -1

#define	WTAP_ENCAP_UNKNOWN 0

#define	WTAP_ENCAP_ETHERNET 1

#define	WTAP_ENCAP_TOKEN_RING 2

#define	WTAP_ENCAP_SLIP 3

#define	WTAP_ENCAP_PPP 4

#define	WTAP_ENCAP_FDDI 5

#define	WTAP_ENCAP_FDDI_BITSWAPPED 6

#define	WTAP_ENCAP_RAW_IP 7

#define	WTAP_ENCAP_ARCNET 8

#define	WTAP_ENCAP_ARCNET_LINUX 9

#define	WTAP_ENCAP_ATM_RFC1483 10

#define	WTAP_ENCAP_LINUX_ATM_CLIP 11

#define	WTAP_ENCAP_LAPB 12

#define	WTAP_ENCAP_ATM_PDUS 13

#define	WTAP_ENCAP_ATM_PDUS_UNTRUNCATED 14

#define	WTAP_ENCAP_NULL 15

#define	WTAP_ENCAP_ASCEND 16

#define	WTAP_ENCAP_ISDN 17

#define	WTAP_ENCAP_IP_OVER_FC 18

#define	WTAP_ENCAP_PPP_WITH_PHDR 19

#define	WTAP_ENCAP_IEEE_802_11 20

#define	WTAP_ENCAP_IEEE_802_11_PRISM 21

#define	WTAP_ENCAP_IEEE_802_11_WITH_RADIO 22

#define	WTAP_ENCAP_IEEE_802_11_RADIOTAP 23

#define	WTAP_ENCAP_IEEE_802_11_AVS 24

#define	WTAP_ENCAP_SLL 25

#define	WTAP_ENCAP_FRELAY 26

#define	WTAP_ENCAP_FRELAY_WITH_PHDR 27

#define	WTAP_ENCAP_CHDLC 28

#define	WTAP_ENCAP_CISCO_IOS 29

#define	WTAP_ENCAP_LOCALTALK 30

#define	WTAP_ENCAP_OLD_PFLOG 31

#define	WTAP_ENCAP_HHDLC 32

#define	WTAP_ENCAP_DOCSIS 33

#define	WTAP_ENCAP_COSINE 34

#define	WTAP_ENCAP_WFLEET_HDLC 35

#define	WTAP_ENCAP_SDLC 36

#define	WTAP_ENCAP_TZSP 37

#define	WTAP_ENCAP_ENC 38

#define	WTAP_ENCAP_PFLOG 39

#define	WTAP_ENCAP_CHDLC_WITH_PHDR 40

#define	WTAP_ENCAP_BLUETOOTH_H4 41

#define	WTAP_ENCAP_MTP2 42

#define	WTAP_ENCAP_MTP3 43

#define	WTAP_ENCAP_IRDA 44

#define	WTAP_ENCAP_USER0 45

#define	WTAP_ENCAP_USER1 46

#define	WTAP_ENCAP_USER2 47

#define	WTAP_ENCAP_USER3 48

#define	WTAP_ENCAP_USER4 49

#define	WTAP_ENCAP_USER5 50

#define	WTAP_ENCAP_USER6 51

#define	WTAP_ENCAP_USER7 52

#define	WTAP_ENCAP_USER8 53

#define	WTAP_ENCAP_USER9 54

#define	WTAP_ENCAP_USER10 55

#define	WTAP_ENCAP_USER11 56

#define	WTAP_ENCAP_USER12 57

#define	WTAP_ENCAP_USER13 58

#define	WTAP_ENCAP_USER14 59

#define	WTAP_ENCAP_USER15 60

#define	WTAP_ENCAP_SYMANTEC 61

#define	WTAP_ENCAP_APPLE_IP_OVER_IEEE1394 62

#define	WTAP_ENCAP_BACNET_MS_TP 63

#define	WTAP_ENCAP_NETTL_RAW_ICMP 64

#define	WTAP_ENCAP_NETTL_RAW_ICMPV6 65

#define	WTAP_ENCAP_GPRS_LLC 66

#define	WTAP_ENCAP_JUNIPER_ATM1 67

#define	WTAP_ENCAP_JUNIPER_ATM2 68

#define	WTAP_ENCAP_REDBACK 69

#define	WTAP_ENCAP_NETTL_RAW_IP 70

#define	WTAP_ENCAP_NETTL_ETHERNET 71

#define	WTAP_ENCAP_NETTL_TOKEN_RING 72

#define	WTAP_ENCAP_NETTL_FDDI 73

#define	WTAP_ENCAP_NETTL_UNKNOWN 74

#define	WTAP_ENCAP_MTP2_WITH_PHDR 75

#define	WTAP_ENCAP_JUNIPER_PPPOE 76

#define	WTAP_ENCAP_GCOM_TIE1 77

#define	WTAP_ENCAP_GCOM_SERIAL 78

#define	WTAP_ENCAP_NETTL_X25 79

#define	WTAP_ENCAP_K12 80

#define	WTAP_ENCAP_JUNIPER_MLPPP 81

#define	WTAP_ENCAP_JUNIPER_MLFR 82

#define	WTAP_ENCAP_JUNIPER_ETHER 83

#define	WTAP_ENCAP_JUNIPER_PPP 84

#define	WTAP_ENCAP_JUNIPER_FRELAY 85

#define	WTAP_ENCAP_JUNIPER_CHDLC 86

#define	WTAP_ENCAP_JUNIPER_GGSN 87

#define	WTAP_ENCAP_LINUX_LAPD 88

#define	WTAP_ENCAP_CATAPULT_DCT2000 89

#define	WTAP_ENCAP_BER 90

#define	WTAP_ENCAP_JUNIPER_VP 91

#define	WTAP_ENCAP_USB_FREEBSD 92

#define	WTAP_ENCAP_IEEE802_16_MAC_CPS 93

#define	WTAP_ENCAP_NETTL_RAW_TELNET 94

#define	WTAP_ENCAP_USB_LINUX 95

#define	WTAP_ENCAP_MPEG 96

#define	WTAP_ENCAP_PPI 97

#define	WTAP_ENCAP_ERF 98

#define	WTAP_ENCAP_BLUETOOTH_H4_WITH_PHDR 99

#define	WTAP_ENCAP_SITA 100

#define	WTAP_ENCAP_SCCP 101

#define	WTAP_ENCAP_BLUETOOTH_HCI 102 /raw packets without a transport layer header e.g. H4/

#define	WTAP_ENCAP_IPMB_KONTRON 103

#define	WTAP_ENCAP_IEEE802_15_4 104

#define	WTAP_ENCAP_X2E_XORAYA 105

#define	WTAP_ENCAP_FLEXRAY 106

#define	WTAP_ENCAP_LIN 107

#define	WTAP_ENCAP_MOST 108

#define	WTAP_ENCAP_CAN20B 109

#define	WTAP_ENCAP_LAYER1_EVENT 110

#define	WTAP_ENCAP_X2E_SERIAL 111

#define	WTAP_ENCAP_I2C_LINUX 112

#define	WTAP_ENCAP_IEEE802_15_4_NONASK_PHY 113

#define	WTAP_ENCAP_TNEF 114

#define	WTAP_ENCAP_USB_LINUX_MMAPPED 115

#define	WTAP_ENCAP_GSM_UM 116

#define	WTAP_ENCAP_DPNSS 117

#define	WTAP_ENCAP_PACKETLOGGER 118

#define	WTAP_ENCAP_NSTRACE_1_0 119

#define	WTAP_ENCAP_NSTRACE_2_0 120

#define	WTAP_ENCAP_FIBRE_CHANNEL_FC2 121

#define	WTAP_ENCAP_FIBRE_CHANNEL_FC2_WITH_FRAME_DELIMS 122

#define	WTAP_ENCAP_JPEG_JFIF 123 /* obsoleted by WTAP_ENCAP_MIME*/

#define	WTAP_ENCAP_IPNET 124

#define	WTAP_ENCAP_SOCKETCAN 125

#define	WTAP_ENCAP_IEEE_802_11_NETMON 126

#define	WTAP_ENCAP_IEEE802_15_4_NOFCS 127

#define	WTAP_ENCAP_RAW_IPFIX 128

#define	WTAP_ENCAP_RAW_IP4 129

#define	WTAP_ENCAP_RAW_IP6 130

#define	WTAP_ENCAP_LAPD 131

#define	WTAP_ENCAP_DVBCI 132

#define	WTAP_ENCAP_MUX27010 133

#define	WTAP_ENCAP_MIME 134

#define	WTAP_ENCAP_NETANALYZER 135

#define	WTAP_ENCAP_NETANALYZER_TRANSPARENT 136

#define	WTAP_ENCAP_IP_OVER_IB_SNOOP 137

#define	WTAP_ENCAP_MPEG_2_TS 138

#define	WTAP_ENCAP_PPP_ETHER 139

#define	WTAP_ENCAP_NFC_LLCP 140

#define	WTAP_ENCAP_NFLOG 141

#define	WTAP_ENCAP_V5_EF 142

#define	WTAP_ENCAP_BACNET_MS_TP_WITH_PHDR 143

#define	WTAP_ENCAP_IXVERIWAVE 144

#define	WTAP_ENCAP_SDH 145

#define	WTAP_ENCAP_DBUS 146

#define	WTAP_ENCAP_AX25_KISS 147

#define	WTAP_ENCAP_AX25 148

#define	WTAP_ENCAP_SCTP 149

#define	WTAP_ENCAP_INFINIBAND 150

#define	WTAP_ENCAP_JUNIPER_SVCS 151

#define	WTAP_ENCAP_USBPCAP 152

#define	WTAP_ENCAP_RTAC_SERIAL 153

#define	WTAP_ENCAP_BLUETOOTH_LE_LL 154

#define	WTAP_ENCAP_WIRESHARK_UPPER_PDU 155

#define	WTAP_ENCAP_STANAG_4607 156

#define	WTAP_ENCAP_STANAG_5066_D_PDU 157

#define	WTAP_ENCAP_NETLINK 158

#define	WTAP_ENCAP_BLUETOOTH_LINUX_MONITOR 159

#define	WTAP_ENCAP_BLUETOOTH_BREDR_BB 160

#define	WTAP_ENCAP_BLUETOOTH_LE_LL_WITH_PHDR 161

#define	WTAP_ENCAP_NSTRACE_3_0 162

#define	WTAP_ENCAP_LOGCAT 163

#define	WTAP_ENCAP_LOGCAT_BRIEF 164

#define	WTAP_ENCAP_LOGCAT_PROCESS 165

#define	WTAP_ENCAP_LOGCAT_TAG 166

#define	WTAP_ENCAP_LOGCAT_THREAD 167

#define	WTAP_ENCAP_LOGCAT_TIME 168

#define	WTAP_ENCAP_LOGCAT_THREADTIME 169

#define	WTAP_ENCAP_LOGCAT_LONG 170

#define	WTAP_ENCAP_PKTAP 171

#define	WTAP_ENCAP_EPON 172

#define	WTAP_ENCAP_IPMI_TRACE 173

#define	WTAP_ENCAP_LOOP 174

#define	WTAP_ENCAP_JSON 175

#define	WTAP_ENCAP_NSTRACE_3_5 176

#define	WTAP_ENCAP_ISO14443 177

#define	WTAP_ENCAP_GFP_T 178

#define	WTAP_ENCAP_GFP_F 179

#define	WTAP_ENCAP_IP_OVER_IB_PCAP 180

#define	WTAP_ENCAP_JUNIPER_VN 181

#define	WTAP_ENCAP_USB_DARWIN 182

#define	WTAP_ENCAP_LORATAP 183

#define	WTAP_ENCAP_3MB_ETHERNET 184

#define	WTAP_ENCAP_VSOCK 185

#define	WTAP_ENCAP_NORDIC_BLE 186

#define	WTAP_ENCAP_NETMON_NET_NETEVENT 187

#define	WTAP_ENCAP_NETMON_HEADER 188

#define	WTAP_ENCAP_NETMON_NET_FILTER 189

#define	WTAP_ENCAP_NETMON_NETWORK_INFO_EX 190

#define	WTAP_ENCAP_MA_WFP_CAPTURE_V4 191

#define	WTAP_ENCAP_MA_WFP_CAPTURE_V6 192

#define	WTAP_ENCAP_MA_WFP_CAPTURE_2V4 193

#define	WTAP_ENCAP_MA_WFP_CAPTURE_2V6 194

#define	WTAP_ENCAP_MA_WFP_CAPTURE_AUTH_V4 195

#define	WTAP_ENCAP_MA_WFP_CAPTURE_AUTH_V6 196

#define	WTAP_ENCAP_JUNIPER_ST 197

#define	WTAP_ENCAP_ETHERNET_MPACKET 198

#define	WTAP_ENCAP_DOCSIS31_XRA31 199

#define	WTAP_ENCAP_DPAUXMON 200

#define	WTAP_ENCAP_RUBY_MARSHAL 201

#define	WTAP_ENCAP_RFC7468 202

#define	WTAP_ENCAP_SYSTEMD_JOURNAL 203 /* Event, not a packet */

#define	WTAP_ENCAP_EBHSCR 204

#define	WTAP_ENCAP_VPP 205

#define	WTAP_ENCAP_IEEE802_15_4_TAP 206

#define	WTAP_ENCAP_LOG_3GPP 207

#define	WTAP_ENCAP_USB_2_0 208

#define	WTAP_ENCAP_MP4 209

#define	WTAP_ENCAP_SLL2 210

#define	WTAP_ENCAP_ZWAVE_SERIAL 211

#define	WTAP_ENCAP_ETW 212

#define	WTAP_ENCAP_ERI_ENB_LOG 213

#define	WTAP_ENCAP_ZBNCP 214

#define	WTAP_ENCAP_USB_2_0_LOW_SPEED 215

#define	WTAP_ENCAP_USB_2_0_FULL_SPEED 216

#define	WTAP_ENCAP_USB_2_0_HIGH_SPEED 217

#define	WTAP_ENCAP_AUTOSAR_DLT 218

#define	WTAP_ENCAP_AUERSWALD_LOG 219

#define	WTAP_ENCAP_ATSC_ALP 220

#define	WTAP_ENCAP_FIRA_UCI 221

#define	WTAP_ENCAP_SILABS_DEBUG_CHANNEL 222

#define	WTAP_ENCAP_MDB 223

#define	WTAP_ENCAP_EMS 224

#define	WTAP_ENCAP_DECT_NR 225

#define	WTAP_ENCAP_MMODULE 226

#define	WTAP_ENCAP_PROCMON 227

#define	WTAP_NUM_ENCAP_TYPES wtap_get_num_encap_types()

#define	WTAP_FILE_TYPE_SUBTYPE_UNKNOWN -1

#define	WTAP_TSPREC_UNKNOWN -2

#define	WTAP_TSPREC_PER_PACKET -1 /* as a per-file value, means per-packet */

#define	WTAP_TSPREC_SEC 0

#define	WTAP_TSPREC_100_MSEC 1

#define	WTAP_TSPREC_DSEC 1 /* Backwards compatibility */

#define	WTAP_TSPREC_10_MSEC 2

#define	WTAP_TSPREC_CSEC 2 /* Backwards compatibility */

#define	WTAP_TSPREC_MSEC 3

#define	WTAP_TSPREC_100_USEC 4

#define	WTAP_TSPREC_10_USEC 5

#define	WTAP_TSPREC_USEC 6

#define	WTAP_TSPREC_100_NSEC 7

#define	WTAP_TSPREC_10_NSEC 8

#define	WTAP_TSPREC_NSEC 9

#define	WTAP_MAX_PACKET_SIZE_STANDARD 262144U

#define	WTAP_MAX_PACKET_SIZE_USBPCAP (128U1024U1024U)

#define	WTAP_MAX_PACKET_SIZE_EBHSCR (32U1024U1024U)

#define	WTAP_MAX_PACKET_SIZE_DBUS (128U1024U1024U)

#define	FROM_DCE 0x80

#define	ATM_RAW_CELL 0x01 /* true if the packet is a single cell */

#define	ATM_NO_HEC 0x02 /* true if the cell has HEC stripped out */

#define	ATM_AAL2_NOPHDR 0x04 /* true if the AAL2 PDU has no pseudo-header */

#define	ATM_REASSEMBLY_ERROR 0x08 /* true if this is an incompletely-reassembled PDU */

#define	AAL_UNKNOWN 0 /* AAL unknown */

#define	AAL_1 1 /* AAL1 */

#define	AAL_2 2 /* AAL2 */

#define	AAL_3_4 3 /* AAL3/4 */

#define	AAL_5 4 /* AAL5 */

#define	AAL_USER 5 /* User AAL */

#define	AAL_SIGNALLING 6 /* Signaling AAL */

#define	AAL_OAMCELL 7 /* OAM cell */

#define	TRAF_UNKNOWN 0 /* Unknown */

#define	TRAF_LLCMX 1 /* LLC multiplexed (RFC 1483) */

#define	TRAF_VCMX 2 /* VC multiplexed (RFC 1483) */

#define	TRAF_LANE 3 /* LAN Emulation */

#define	TRAF_ILMI 4 /* ILMI */

#define	TRAF_FR 5 /* Frame Relay */

#define	TRAF_SPANS 6 /* FORE SPANS */

#define	TRAF_IPSILON 7 /* Ipsilon */

#define	TRAF_UMTS_FP 8 /* UMTS Frame Protocol */

#define	TRAF_GPRS_NS 9 /* GPRS Network Services */

#define	TRAF_SSCOP 10 /* SSCOP */

#define	TRAF_ST_UNKNOWN 0 /* Unknown */

#define	TRAF_ST_VCMX_802_3_FCS 1 /* 802.3 with an FCS */

#define	TRAF_ST_VCMX_802_4_FCS 2 /* 802.4 with an FCS */

#define	TRAF_ST_VCMX_802_5_FCS 3 /* 802.5 with an FCS */

#define	TRAF_ST_VCMX_FDDI_FCS 4 /* FDDI with an FCS */

#define	TRAF_ST_VCMX_802_6_FCS 5 /* 802.6 with an FCS */

#define	TRAF_ST_VCMX_802_3 7 /* 802.3 without an FCS */

#define	TRAF_ST_VCMX_802_4 8 /* 802.4 without an FCS */

#define	TRAF_ST_VCMX_802_5 9 /* 802.5 without an FCS */

#define	TRAF_ST_VCMX_FDDI 10 /* FDDI without an FCS */

#define	TRAF_ST_VCMX_802_6 11 /* 802.6 without an FCS */

#define	TRAF_ST_VCMX_FRAGMENTS 12 /* Fragments */

#define	TRAF_ST_VCMX_BPDU 13 /* BPDU */

#define	TRAF_ST_LANE_LE_CTRL 1 /* LANE: LE Ctrl */

#define	TRAF_ST_LANE_802_3 2 /* LANE: 802.3 */

#define	TRAF_ST_LANE_802_5 3 /* LANE: 802.5 */

#define	TRAF_ST_LANE_802_3_MC 4 /* LANE: 802.3 multicast */

#define	TRAF_ST_LANE_802_5_MC 5 /* LANE: 802.5 multicast */

#define	TRAF_ST_IPSILON_FT0 1 /* Ipsilon: Flow Type 0 */

#define	TRAF_ST_IPSILON_FT1 2 /* Ipsilon: Flow Type 1 */

#define	TRAF_ST_IPSILON_FT2 3 /* Ipsilon: Flow Type 2 */

#define	ASCEND_MAX_STR_LEN 64

#define	ASCEND_PFX_WDS_X 1

#define	ASCEND_PFX_WDS_R 2

#define	ASCEND_PFX_WDD 3

#define	ASCEND_PFX_ISDN_X 4

#define	ASCEND_PFX_ISDN_R 5

#define	ASCEND_PFX_ETHER 6

#define	PHDR_802_11_PHY_UNKNOWN 0 /* PHY not known */

#define	PHDR_802_11_PHY_11_FHSS 1 /* 802.11 FHSS */

#define	PHDR_802_11_PHY_11_IR 2 /* 802.11 IR */

#define	PHDR_802_11_PHY_11_DSSS 3 /* 802.11 DSSS */

#define	PHDR_802_11_PHY_11B 4 /* 802.11b */

#define	PHDR_802_11_PHY_11A 5 /* 802.11a */

#define	PHDR_802_11_PHY_11G 6 /* 802.11g */

#define	PHDR_802_11_PHY_11N 7 /* 802.11n */

#define	PHDR_802_11_PHY_11AC 8 /* 802.11ac */

#define	PHDR_802_11_PHY_11AD 9 /* 802.11ad */

#define	PHDR_802_11_PHY_11AH 10 /* 802.11ah */

#define	PHDR_802_11_PHY_11AX 11 /* 802.11ax */

#define	PHDR_802_11_PHY_11BE 12 /* 802.11be - EHT */

#define	PHDR_802_11A_CHANNEL_TYPE_NORMAL 0

#define	PHDR_802_11A_CHANNEL_TYPE_HALF_CLOCKED 1

#define	PHDR_802_11A_CHANNEL_TYPE_QUARTER_CLOCKED 2

#define	PHDR_802_11A_TURBO_TYPE_NORMAL 0

#define	PHDR_802_11A_TURBO_TYPE_TURBO 1 /* If we don't know whether it's static or dynamic */

#define	PHDR_802_11A_TURBO_TYPE_DYNAMIC_TURBO 2

#define	PHDR_802_11A_TURBO_TYPE_STATIC_TURBO 3

#define	PHDR_802_11G_MODE_NORMAL 0

#define	PHDR_802_11G_MODE_SUPER_G 1 /* Atheros Super G */

#define	PHDR_802_11_BANDWIDTH_20_MHZ 0 /* 20 MHz */

#define	PHDR_802_11_BANDWIDTH_40_MHZ 1 /* 40 MHz */

#define	PHDR_802_11_BANDWIDTH_20_20L 2 /* 20 + 20L, 40 MHz */

#define	PHDR_802_11_BANDWIDTH_20_20U 3 /* 20 + 20U, 40 MHz */

#define	PHDR_802_11_BANDWIDTH_80_MHZ 4 /* 80 MHz */

#define	PHDR_802_11_BANDWIDTH_40_40L 5 /* 40 + 40L MHz, 80 MHz */

#define	PHDR_802_11_BANDWIDTH_40_40U 6 /* 40 + 40U MHz, 80 MHz */

#define	PHDR_802_11_BANDWIDTH_20LL 7 /* ???, 80 MHz */

#define	PHDR_802_11_BANDWIDTH_20LU 8 /* ???, 80 MHz */

#define	PHDR_802_11_BANDWIDTH_20UL 9 /* ???, 80 MHz */

#define	PHDR_802_11_BANDWIDTH_20UU 10 /* ???, 80 MHz */

#define	PHDR_802_11_BANDWIDTH_160_MHZ 11 /* 160 MHz */

#define	PHDR_802_11_BANDWIDTH_80_80L 12 /* 80 + 80L, 160 MHz */

#define	PHDR_802_11_BANDWIDTH_80_80U 13 /* 80 + 80U, 160 MHz */

#define	PHDR_802_11_BANDWIDTH_40LL 14 /* ???, 160 MHz */

#define	PHDR_802_11_BANDWIDTH_40LU 15 /* ???, 160 MHz */

#define	PHDR_802_11_BANDWIDTH_40UL 16 /* ???, 160 MHz */

#define	PHDR_802_11_BANDWIDTH_40UU 17 /* ???, 160 MHz */

#define	PHDR_802_11_BANDWIDTH_20LLL 18 /* ???, 160 MHz */

#define	PHDR_802_11_BANDWIDTH_20LLU 19 /* ???, 160 MHz */

#define	PHDR_802_11_BANDWIDTH_20LUL 20 /* ???, 160 MHz */

#define	PHDR_802_11_BANDWIDTH_20LUU 21 /* ???, 160 MHz */

#define	PHDR_802_11_BANDWIDTH_20ULL 22 /* ???, 160 MHz */

#define	PHDR_802_11_BANDWIDTH_20ULU 23 /* ???, 160 MHz */

#define	PHDR_802_11_BANDWIDTH_20UUL 24 /* ???, 160 MHz */

#define	PHDR_802_11_BANDWIDTH_20UUU 25 /* ???, 160 MHz */

#define	PHDR_802_11AD_MIN_FREQUENCY 57000

#define	PHDR_802_11AD_MAX_FREQUENCY 71000

#define	IS_80211AD(frequency)

#define	PHDR_802_11BE_MAX_USERS 4

#define	PHDR_802_11_LAST_PART_OF_A_MPDU 0x00000001 /* this is the last part of an A-MPDU */

#define	PHDR_802_11_A_MPDU_DELIM_CRC_ERROR 0x00000002 /* delimiter CRC error after this part */

#define	PHDR_802_11_SOUNDING_PSDU 0 /* sounding PPDU */

#define	PHDR_802_11_DATA_NOT_CAPTURED 1 /* data not captured, (e.g. multi-user PPDU) */

#define	PHDR_802_11_0_LENGTH_PSDU_VENDOR_SPECIFIC 0xff

#define	COSINE_MAX_IF_NAME_LEN 128

#define	COSINE_ENCAP_TEST 1

#define	COSINE_ENCAP_PPoATM 2

#define	COSINE_ENCAP_PPoFR 3

#define	COSINE_ENCAP_ATM 4

#define	COSINE_ENCAP_FR 5

#define	COSINE_ENCAP_HDLC 6

#define	COSINE_ENCAP_PPP 7

#define	COSINE_ENCAP_ETH 8

#define	COSINE_ENCAP_UNKNOWN 99

#define	COSINE_DIR_TX 1

#define	COSINE_DIR_RX 2

#define	IRDA_INCOMING 0x0000

#define	IRDA_OUTGOING 0x0004

#define	IRDA_LOG_MESSAGE 0x0100 /* log message */

#define	IRDA_MISSED_MSG 0x0101 /* missed log entry or frame */

#define	IRDA_CLASS_FRAME 0x0000

#define	IRDA_CLASS_LOG 0x0100

#define	IRDA_CLASS_MASK 0xFF00

#define	MTP2_ANNEX_A_NOT_USED 0

#define	MTP2_ANNEX_A_USED 1

#define	MTP2_ANNEX_A_USED_UNKNOWN 2

#define	K12_PORT_DS0S 0x00010008

#define	K12_PORT_DS1 0x00100008

#define	K12_PORT_ATMPVC 0x01020000

#define	MAX_ERF_EHDR 16

#define	SITA_FRAME_DIR_TXED (0x00) /* values of sita_phdr.flags */

#define	SITA_FRAME_DIR_RXED (0x01)

#define	SITA_FRAME_DIR (0x01) /* mask */

#define	SITA_ERROR_NO_BUFFER (0x80)

#define	SITA_SIG_DSR (0x01) /* values of sita_phdr.signals */

#define	SITA_SIG_DTR (0x02)

#define	SITA_SIG_CTS (0x04)

#define	SITA_SIG_RTS (0x08)

#define	SITA_SIG_DCD (0x10)

#define	SITA_SIG_UNDEF1 (0x20)

#define	SITA_SIG_UNDEF2 (0x40)

#define	SITA_SIG_UNDEF3 (0x80)

#define	SITA_ERROR_TX_UNDERRUN (0x01) /* values of sita_phdr.errors2 (if SITA_FRAME_DIR_TXED) */

#define	SITA_ERROR_TX_CTS_LOST (0x02)

#define	SITA_ERROR_TX_UART_ERROR (0x04)

#define	SITA_ERROR_TX_RETX_LIMIT (0x08)

#define	SITA_ERROR_TX_UNDEF1 (0x10)

#define	SITA_ERROR_TX_UNDEF2 (0x20)

#define	SITA_ERROR_TX_UNDEF3 (0x40)

#define	SITA_ERROR_TX_UNDEF4 (0x80)

#define	SITA_ERROR_RX_FRAMING (0x01) /* values of sita_phdr.errors1 (if SITA_FRAME_DIR_RXED) */

#define	SITA_ERROR_RX_PARITY (0x02)

#define	SITA_ERROR_RX_COLLISION (0x04)

#define	SITA_ERROR_RX_FRAME_LONG (0x08)

#define	SITA_ERROR_RX_FRAME_SHORT (0x10)

#define	SITA_ERROR_RX_UNDEF1 (0x20)

#define	SITA_ERROR_RX_UNDEF2 (0x40)

#define	SITA_ERROR_RX_UNDEF3 (0x80)

#define	SITA_ERROR_RX_NONOCTET_ALIGNED (0x01) /* values of sita_phdr.errors2 (if SITA_FRAME_DIR_RXED) */

#define	SITA_ERROR_RX_ABORT (0x02)

#define	SITA_ERROR_RX_CD_LOST (0x04)

#define	SITA_ERROR_RX_DPLL (0x08)

#define	SITA_ERROR_RX_OVERRUN (0x10)

#define	SITA_ERROR_RX_FRAME_LEN_VIOL (0x20)

#define	SITA_ERROR_RX_CRC (0x40)

#define	SITA_ERROR_RX_BREAK (0x80)

#define	SITA_PROTO_UNUSED (0x00) /* values of sita_phdr.proto */

#define	SITA_PROTO_BOP_LAPB (0x01)

#define	SITA_PROTO_ETHERNET (0x02)

#define	SITA_PROTO_ASYNC_INTIO (0x03)

#define	SITA_PROTO_ASYNC_BLKIO (0x04)

#define	SITA_PROTO_ALC (0x05)

#define	SITA_PROTO_UTS (0x06)

#define	SITA_PROTO_PPP_HDLC (0x07)

#define	SITA_PROTO_SDLC (0x08)

#define	SITA_PROTO_TOKENRING (0x09)

#define	SITA_PROTO_I2C (0x10)

#define	SITA_PROTO_DPM_LINK (0x11)

#define	SITA_PROTO_BOP_FRL (0x12)

#define	BTHCI_CHANNEL_COMMAND 1

#define	BTHCI_CHANNEL_ACL 2

#define	BTHCI_CHANNEL_SCO 3

#define	BTHCI_CHANNEL_EVENT 4

#define	BTHCI_CHANNEL_ISO 5

#define	GSM_UM_CHANNEL_UNKNOWN 0

#define	GSM_UM_CHANNEL_BCCH 1

#define	GSM_UM_CHANNEL_SDCCH 2

#define	GSM_UM_CHANNEL_SACCH 3

#define	GSM_UM_CHANNEL_FACCH 4

#define	GSM_UM_CHANNEL_CCCH 5

#define	GSM_UM_CHANNEL_RACH 6

#define	GSM_UM_CHANNEL_AGCH 7

#define	GSM_UM_CHANNEL_PCH 8

#define	LLCP_PHDR_FLAG_SENT 0

#define	REC_TYPE_PACKET 0

#define	REC_TYPE_FT_SPECIFIC_EVENT 1

#define	REC_TYPE_FT_SPECIFIC_REPORT 2

#define	REC_TYPE_SYSCALL 3

#define	REC_TYPE_SYSTEMD_JOURNAL_EXPORT 4

#define	REC_TYPE_CUSTOM_BLOCK 5

#define	PACK_FLAGS_DIRECTION_MASK 0x00000003 /* unshifted */

#define	PACK_FLAGS_DIRECTION_SHIFT 0

#define	PACK_FLAGS_DIRECTION(pack_flags) (((pack_flags) & PACK_FLAGS_DIRECTION_MASK) >> PACK_FLAGS_DIRECTION_SHIFT)

#define	PACK_FLAGS_DIRECTION_UNKNOWN 0

#define	PACK_FLAGS_DIRECTION_INBOUND 1

#define	PACK_FLAGS_DIRECTION_OUTBOUND 2

#define	PACK_FLAGS_RECEPTION_TYPE_MASK 0x0000001C /* unshifted */

#define	PACK_FLAGS_RECEPTION_TYPE_SHIFT 2

#define	PACK_FLAGS_RECEPTION_TYPE(pack_flags) (((pack_flags) & PACK_FLAGS_RECEPTION_TYPE_MASK) >> PACK_FLAGS_RECEPTION_TYPE_SHIFT)

#define	PACK_FLAGS_RECEPTION_TYPE_UNSPECIFIED 0

#define	PACK_FLAGS_RECEPTION_TYPE_UNICAST 1

#define	PACK_FLAGS_RECEPTION_TYPE_MULTICAST 2

#define	PACK_FLAGS_RECEPTION_TYPE_BROADCAST 3

#define	PACK_FLAGS_RECEPTION_TYPE_PROMISCUOUS 4

#define	PACK_FLAGS_FCS_LENGTH_MASK 0x000001E0 /* unshifted */

#define	PACK_FLAGS_FCS_LENGTH_SHIFT 5

#define	PACK_FLAGS_FCS_LENGTH(pack_flags) (((pack_flags) & PACK_FLAGS_FCS_LENGTH_MASK) >> PACK_FLAGS_FCS_LENGTH_SHIFT)

#define	PACK_FLAGS_RESERVED_MASK 0x0000FE00

#define	PACK_FLAGS_CRC_ERROR 0x01000000

#define	PACK_FLAGS_PACKET_TOO_LONG 0x02000000

#define	PACK_FLAGS_PACKET_TOO_SHORT 0x04000000

#define	PACK_FLAGS_WRONG_INTER_FRAME_GAP 0x08000000

#define	PACK_FLAGS_UNALIGNED_FRAME 0x10000000

#define	PACK_FLAGS_START_FRAME_DELIMITER_ERROR 0x20000000

#define	PACK_FLAGS_PREAMBLE_ERROR 0x40000000

#define	PACK_FLAGS_SYMBOL_ERROR 0x80000000

#define	PACK_FLAGS_VALUE(direction, reception_type, fcs_length, ll_dependent_errors)

#define	WTAP_NSTIME_32BIT_SECS_MAX ((time_t)(sizeof(time_t) > sizeof(int32_t) ? UINT32_MAX : INT32_MAX))

#define	WTAP_HAS_TS 0x00000001

#define	WTAP_HAS_CAP_LEN 0x00000002

#define	WTAP_HAS_INTERFACE_ID 0x00000004

#define	WTAP_HAS_SECTION_NUMBER 0x00000008

#define	MAXNAMELEN 64 /* max name length (most names: DNS labels, services, eth) */

#define	MAXDNSNAMELEN 256 /* max total length of a domain name in DNS */

#define	WTAP_DUMP_PARAMS_INIT {.snaplen=0}

#define	WTAP_COMMENT_PER_SECTION 0x00000001 /* per-file/per-file-section */
	Comment applies to the entire file or file section.

#define	WTAP_COMMENT_PER_INTERFACE 0x00000002 /* per-interface */
	Comment applies to a specific interface.

#define	WTAP_COMMENT_PER_PACKET 0x00000004 /* per-packet */
	Comment applies to an individual packet.

#define	OPTION_TYPES_SUPPORTED(option_type_array) array_length(option_type_array), option_type_array
	Declare supported option types for a block.

#define	NO_OPTIONS_SUPPORTED 0, NULL
	Declare that no option types are supported for a block.

#define	BLOCKS_SUPPORTED(block_type_array) array_length(block_type_array), block_type_array

#define	WTAP_TYPE_AUTO 0

#define	WTAP_ERR_NOT_REGULAR_FILE -1

#define	WTAP_ERR_RANDOM_OPEN_PIPE -2

#define	WTAP_ERR_FILE_UNKNOWN_FORMAT -3

#define	WTAP_ERR_UNSUPPORTED -4

#define	WTAP_ERR_CANT_WRITE_TO_PIPE -5

#define	WTAP_ERR_CANT_OPEN -6

#define	WTAP_ERR_UNWRITABLE_FILE_TYPE -7

#define	WTAP_ERR_UNWRITABLE_ENCAP -8

#define	WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED -9

#define	WTAP_ERR_CANT_WRITE -10

#define	WTAP_ERR_CANT_CLOSE -11

#define	WTAP_ERR_SHORT_READ -12

#define	WTAP_ERR_BAD_FILE -13

#define	WTAP_ERR_SHORT_WRITE -14

#define	WTAP_ERR_UNC_OVERFLOW -15

#define	WTAP_ERR_RANDOM_OPEN_STDIN -16

#define	WTAP_ERR_COMPRESSION_NOT_SUPPORTED -17

#define	WTAP_ERR_CANT_SEEK -18

#define	WTAP_ERR_CANT_SEEK_COMPRESSED -19

#define	WTAP_ERR_DECOMPRESS -20

#define	WTAP_ERR_INTERNAL -21

#define	WTAP_ERR_PACKET_TOO_LARGE -22

#define	WTAP_ERR_CHECK_WSLUA -23

#define	WTAP_ERR_UNWRITABLE_REC_TYPE -24

#define	WTAP_ERR_UNWRITABLE_REC_DATA -25

#define	WTAP_ERR_DECOMPRESSION_NOT_SUPPORTED -26

#define	WTAP_ERR_TIME_STAMP_NOT_SUPPORTED -27

#define	WTAP_ERR_REC_MALFORMED -28

Typedefs
typedef struct wtap_rec	wtap_rec

typedef struct hashipv4	hashipv4_t

typedef struct hashipv6	hashipv6_t

typedef struct addrinfo_lists	addrinfo_lists_t

typedef struct wtap_dump_params	wtap_dump_params

typedef struct wtap	wtap

typedef struct wtap_dumper	wtap_dumper

typedef struct wtap_reader *	FILE_T

typedef struct wtap_wslua_file_info	wtap_wslua_file_info_t

typedef wtap_open_return_val(*	wtap_open_routine_t) (struct wtap , int , char **)

typedef void(*	wtap_new_ipv4_callback_t) (const unsigned addr, const char *name, const bool static_entry)
	Callback type for registering new IPv4 hostnames.

typedef void(*	wtap_new_ipv6_callback_t) (const ws_in6_addr addrp, const char name, const bool static_entry)
	Callback type for registering new IPv6 hostnames.

typedef void(*	wtap_new_secrets_callback_t) (uint32_t secrets_type, const void *secrets, unsigned size)
	Callback type for receiving new decryption secrets.

Enumerations
enum	wtap_open_return_val { WTAP_OPEN_NOT_MINE = 0 , WTAP_OPEN_MINE = 1 , WTAP_OPEN_ERROR = -1 }
	For registering file types that we can open. More...

enum	wtap_open_type { OPEN_INFO_MAGIC = 0 , OPEN_INFO_HEURISTIC = 1 }
	Strategy used to identify a file format. More...

enum	option_support_t { OPTION_NOT_SUPPORTED , ONE_OPTION_SUPPORTED , MULTIPLE_OPTIONS_SUPPORTED }
	Indicates how a file format supports a given option type. More...

enum	block_support_t { BLOCK_NOT_SUPPORTED , ONE_BLOCK_SUPPORTED , MULTIPLE_BLOCKS_SUPPORTED }

enum	ft_sort_order { FT_SORT_BY_NAME , FT_SORT_BY_DESCRIPTION }

Functions
WS_DLL_PUBLIC void	init_open_routines (void)

void	cleanup_open_routines (void)
	Clean up registered file open routines.

WS_DLL_PUBLIC void	wtap_init (bool load_wiretap_plugins, const char app_env_var_prefix, const struct file_extension_info file_extensions, unsigned num_extensions)
	Initialize the Wiretap library.

WS_DLL_PUBLIC struct wtap *	wtap_open_offline (const char filename, unsigned int type, int err, char *err_info, bool do_random, const char app_env_var_prefix)
	Open a capture file for offline analysis.

WS_DLL_PUBLIC void	wtap_cleareof (wtap *wth)
	Clear EOF status for a wiretap file.

WS_DLL_PUBLIC void	wtap_set_cb_new_ipv4 (wtap *wth, wtap_new_ipv4_callback_t add_new_ipv4)
	Set the callback for adding new IPv4 hostnames.

WS_DLL_PUBLIC void	wtap_set_cb_new_ipv6 (wtap *wth, wtap_new_ipv6_callback_t add_new_ipv6)
	Set the callback for adding new IPv6 hostnames.

WS_DLL_PUBLIC void	wtap_set_cb_new_secrets (wtap *wth, wtap_new_secrets_callback_t add_new_secrets)
	Set the callback for receiving new decryption secrets.

WS_DLL_PUBLIC bool	wtap_read (wtap wth, wtap_rec rec, int err, char err_info, int64_t offset)
	Read the next record in the file, filling in phdr and buf.

WS_DLL_PUBLIC bool	wtap_seek_read (wtap wth, int64_t seek_off, wtap_rec rec, int err, char *err_info)
	Read the record at a specified offset in a capture file, filling in phdr and buf.

WS_DLL_PUBLIC void	wtap_rec_init (wtap_rec *rec, size_t space)
	Initialize a wtap_rec structure.

WS_DLL_PUBLIC void	wtap_rec_apply_snapshot (wtap_rec *rec, uint32_t snaplen)
	Apply a snapshot length to a wtap_rec.

WS_DLL_PUBLIC void	wtap_rec_reset (wtap_rec *rec)
	Re-initialize a wtap_rec structure.

WS_DLL_PUBLIC void	wtap_rec_cleanup (wtap_rec *rec)
	Clean up a wtap_rec structure.

WS_DLL_PUBLIC char *	wtap_unwritable_rec_type_err_string (const wtap_rec *rec)
	Return an error string for WTAP_ERR_UNWRITABLE_REC_TYPE.

WS_DLL_PUBLIC void	wtap_setup_packet_rec (wtap_rec *rec, int encap)
	Set up a wtap_rec for a packet (REC_TYPE_PACKET).

WS_DLL_PUBLIC void	wtap_setup_ft_specific_event_rec (wtap_rec *rec, int file_type_subtype, unsigned record_type)
	Set up a wtap_rec for a file-type specific event.

WS_DLL_PUBLIC void	wtap_setup_ft_specific_report_rec (wtap_rec *rec, int file_type_subtype, unsigned record_type)
	Set up a wtap_rec for a file-type specific report.

WS_DLL_PUBLIC void	wtap_setup_syscall_rec (wtap_rec *rec)
	Set up a wtap_rec for a system call.

WS_DLL_PUBLIC void	wtap_setup_systemd_journal_export_rec (wtap_rec *rec)
	Set up a wtap_rec for a systemd journal export entry.

WS_DLL_PUBLIC void	wtap_setup_custom_block_rec (wtap_rec *rec, uint32_t pen, uint32_t payload_length, bool copy_allowed)
	Set up a wtap_rec for a custom block.

WS_DLL_PUBLIC ws_compression_type	wtap_get_compression_type (wtap *wth)
	Get the compression type used for the capture file.

WS_DLL_PUBLIC int64_t	wtap_read_so_far (wtap *wth)
	Return an approximation of the amount of data read sequentially.

WS_DLL_PUBLIC int64_t	wtap_file_size (wtap wth, int err)
	Get the size of the capture file.

WS_DLL_PUBLIC unsigned	wtap_snapshot_length (wtap *wth)
	Get the snapshot length for the capture file.

WS_DLL_PUBLIC int	wtap_file_type_subtype (wtap *wth)
	Get the file type subtype.

WS_DLL_PUBLIC int	wtap_file_encap (wtap *wth)
	Get the encapsulation type for the capture file.

WS_DLL_PUBLIC int	wtap_file_tsprec (wtap *wth)
	Get the timestamp precision for the capture file.

WS_DLL_PUBLIC const nstime_t *	wtap_file_start_ts (wtap *wth)
	Get the start timestamp of the capture file.

WS_DLL_PUBLIC const nstime_t *	wtap_file_end_ts (wtap *wth)
	Get the end timestamp of the capture file.

WS_DLL_PUBLIC unsigned	wtap_file_get_num_shbs (wtap *wth)
	Gets number of section header blocks.

WS_DLL_PUBLIC wtap_block_t	wtap_file_get_shb (wtap *wth, unsigned shb_num)
	Gets existing section header block, not for new file.

WS_DLL_PUBLIC void	wtap_write_shb_comment (wtap wth, char comment)
	Sets or replaces the section header comment.

WS_DLL_PUBLIC unsigned	wtap_file_get_shb_global_interface_id (wtap *wth, unsigned shb_num, uint32_t interface_id)
	Gets the unique interface id for a SHB's interface.

WS_DLL_PUBLIC wtapng_iface_descriptions_t *	wtap_file_get_idb_info (wtap *wth)
	Gets existing interface descriptions.

WS_DLL_PUBLIC wtapng_dpib_lookup_info_t *	wtap_file_get_dpib_lookup_info (wtap *wth)

WS_DLL_PUBLIC wtap_block_t	wtap_get_next_interface_description (wtap *wth)
	Gets next interface description.

WS_DLL_PUBLIC void	wtap_free_idb_info (wtapng_iface_descriptions_t *idb_info)
	Free's a interface description block and all of its members.

WS_DLL_PUBLIC char *	wtap_get_debug_if_descr (const wtap_block_t if_descr, const int indent, const char *line_end)
	Gets a debug string of an interface description.

WS_DLL_PUBLIC wtap_block_t	wtap_file_get_nrb (wtap *wth)
	Gets existing name resolution block, not for new file.

WS_DLL_PUBLIC unsigned	wtap_file_get_num_dsbs (wtap *wth)
	Gets number of decryption secrets blocks.

WS_DLL_PUBLIC wtap_block_t	wtap_file_get_dsb (wtap *wth, unsigned dsb_num)
	Gets existing decryption secrets block, not for new file.

WS_DLL_PUBLIC void	wtap_file_add_decryption_secrets (wtap *wth, const wtap_block_t dsb)
	Adds a Decryption Secrets Block to the open wiretap session.

WS_DLL_PUBLIC bool	wtap_file_discard_decryption_secrets (wtap *wth)
	Remove any decryption secret information from the per-file information; used if we're stripping decryption secrets while the file is open.

WS_DLL_PUBLIC void	wtap_fdclose (wtap *wth)
	Close all file descriptors for the current wiretap file.

WS_DLL_PUBLIC bool	wtap_fdreopen (wtap wth, const char filename, int *err)
	Reopen the random-access file descriptor for the current file.

WS_DLL_PUBLIC void	wtap_sequential_close (wtap *wth)
	Close the sequential-access side of the file.

WS_DLL_PUBLIC void	wtap_close (wtap *wth)
	Fully close the wiretap file and release all resources.

WS_DLL_PUBLIC bool	wtap_dump_can_open (int filetype)
	Check if a file type can be opened for dumping.

WS_DLL_PUBLIC int	wtap_dump_required_file_encap_type (const GArray *file_encaps)
	Determine the required per-file encapsulation type.

WS_DLL_PUBLIC bool	wtap_dump_can_write_encap (int file_type_subtype, int encap)
	Check if a file type/subtype supports writing a given encapsulation.

WS_DLL_PUBLIC bool	wtap_dump_can_compress (int file_type_subtype)
	Check if a file type/subtype supports compression.

WS_DLL_PUBLIC void	wtap_dump_params_init (wtap_dump_params params, wtap wth)
	Initialize the per-file information based on an existing file.

WS_DLL_PUBLIC void	wtap_dump_params_init_no_idbs (wtap_dump_params params, wtap wth)
	Initialize the per-file information based on an existing file, but don't copy over the interface information.

WS_DLL_PUBLIC void	wtap_dump_params_discard_name_resolution (wtap_dump_params *params)
	Remove any name resolution information from the per-file information; used if we're stripping name resolution as we write the file.

WS_DLL_PUBLIC void	wtap_dump_params_discard_decryption_secrets (wtap_dump_params *params)
	Remove any decryption secret information from the per-file information; used if we're stripping decryption secrets as we write the file.

WS_DLL_PUBLIC void	wtap_dump_params_cleanup (wtap_dump_params *params)
	Free memory associated with the wtap_dump_params when it is no longer in use by wtap_dumper.

WS_DLL_PUBLIC wtap_dumper *	wtap_dump_open (const char filename, int file_type_subtype, ws_compression_type compression_type, const wtap_dump_params params, int err, char *err_info)
	Opens a new capture file for writing.

WS_DLL_PUBLIC wtap_dumper *	wtap_dump_open_tempfile (const char tmpdir, char filenamep, const char pfx, int file_type_subtype, ws_compression_type compression_type, const wtap_dump_params params, int err, char **err_info)
	Creates a dumper for a temporary file.

WS_DLL_PUBLIC wtap_dumper *	wtap_dump_fdopen (int fd, int file_type_subtype, ws_compression_type compression_type, const wtap_dump_params params, int err, char **err_info)
	Creates a dumper for an existing file descriptor.

WS_DLL_PUBLIC wtap_dumper *	wtap_dump_open_stdout (int file_type_subtype, ws_compression_type compression_type, const wtap_dump_params params, int err, char **err_info)
	Creates a dumper for the standard output.

WS_DLL_PUBLIC bool	wtap_dump_add_idb (wtap_dumper wdh, wtap_block_t idb, int err, char **err_info)
	Add an IDB to the list of IDBs for a file we're writing. Makes a copy of the IDB, so it can be freed after this call is made.

WS_DLL_PUBLIC bool	wtap_dump (wtap_dumper , const wtap_rec , int err, char *err_info)

WS_DLL_PUBLIC bool	wtap_dump_flush (wtap_dumper , int )

WS_DLL_PUBLIC int	wtap_dump_file_type_subtype (const wtap_dumper *wdh)

WS_DLL_PUBLIC int64_t	wtap_get_bytes_dumped (const wtap_dumper *)

WS_DLL_PUBLIC void	wtap_set_bytes_dumped (wtap_dumper *wdh, int64_t bytes_dumped)

WS_DLL_PUBLIC bool	wtap_addrinfo_list_empty (const addrinfo_lists_t *addrinfo_lists)

WS_DLL_PUBLIC bool	wtap_dump_set_addrinfo_list (wtap_dumper wdh, addrinfo_lists_t addrinfo_lists)

WS_DLL_PUBLIC void	wtap_dump_discard_name_resolution (wtap_dumper *wdh)

WS_DLL_PUBLIC void	wtap_dump_discard_decryption_secrets (wtap_dumper *wdh)

WS_DLL_PUBLIC bool	wtap_dump_close (wtap_dumper wdh, bool needs_reload, int err, char *err_info)

WS_DLL_PUBLIC bool	wtap_dump_can_write (const GArray *file_encaps, uint32_t required_comment_types)
	Determine whether a capture file can be written with the specified options.

WS_DLL_PUBLIC void	wtap_buffer_append_epdu_tag (Buffer buf, uint16_t epdu_tag, const uint8_t data, uint16_t data_len)
	Generates arbitrary packet data in "exported PDU" format and appends it to buf.

WS_DLL_PUBLIC void	wtap_buffer_append_epdu_uint (Buffer *buf, uint16_t epdu_tag, uint32_t val)
	Generates packet data for an unsigned integer in "exported PDU" format. For filetype readers to transform non-packetized data.

WS_DLL_PUBLIC void	wtap_buffer_append_epdu_string (Buffer buf, uint16_t epdu_tag, const char val)
	Generates packet data for a string in "exported PDU" format. For filetype readers to transform non-packetized data.

WS_DLL_PUBLIC int	wtap_buffer_append_epdu_end (Buffer *buf)
	Close off a set of "exported PDUs" added to the buffer. For filetype readers to transform non-packetized data.

WS_DLL_PUBLIC GArray *	wtap_get_savable_file_types_subtypes_for_file (int file_type_subtype, const GArray *file_encaps, uint32_t required_comment_types, ft_sort_order sort_order)
	Get savable file type/subtype candidates for saving a capture file.

WS_DLL_PUBLIC GArray *	wtap_get_writable_file_types_subtypes (ft_sort_order sort_order)
	Get a list of all writable file type/subtype values.

WS_DLL_PUBLIC const char *	wtap_file_type_subtype_description (int file_type_subtype)
	Get a human-readable description for a file type/subtype.

WS_DLL_PUBLIC const char *	wtap_file_type_subtype_name (int file_type_subtype)
	Get a short name for a file type/subtype.

WS_DLL_PUBLIC int	wtap_name_to_file_type_subtype (const char *name)
	Convert a file type/subtype name to its identifier.

WS_DLL_PUBLIC int	wtap_pcap_file_type_subtype (void)
	Get the file type/subtype identifier for classic pcap (microsecond timestamps).

WS_DLL_PUBLIC int	wtap_pcap_nsec_file_type_subtype (void)
	Get the file type/subtype identifier for pcap with nanosecond timestamps.

WS_DLL_PUBLIC int	wtap_pcapng_file_type_subtype (void)
	Get the file type/subtype identifier for pcapng.

WS_DLL_PUBLIC block_support_t	wtap_file_type_subtype_supports_block (int file_type_subtype, wtap_block_type_t type)
	Determine whether a capture file format supports a given block type.

WS_DLL_PUBLIC option_support_t	wtap_file_type_subtype_supports_option (int file_type_subtype, wtap_block_type_t type, unsigned opttype)
	Determine whether a capture file format supports a specific option for a block.

WS_DLL_PUBLIC GSList *	wtap_get_all_capture_file_extensions_list (void)
	Return a list of all extensions that are used by all capture file types, including compressed extensions, e.g. not just "pcap" but also "pcap.gz" if we can read gzipped files.

WS_DLL_PUBLIC GSList *	wtap_get_all_file_extensions_list (void)
	Return a list of all extensions that are used by all file types that we can read, including compressed extensions, e.g. not just "pcap" but also "pcap.gz" if we can read gzipped files.

WS_DLL_PUBLIC void	wtap_free_extensions_list (GSList *extensions)
	Free a list of file extension strings returned by extension helpers.

WS_DLL_PUBLIC const char *	wtap_default_file_extension (int file_type_subtype)
	Get the default file extension for a file type/subtype.

WS_DLL_PUBLIC GSList *	wtap_get_file_extensions_list (int file_type_subtype, bool include_compressed)
	Return a list of file extensions that are used by the specified file type and subtype.

WS_DLL_PUBLIC const char *	wtap_encap_name (int encap)
	Get a short name for an encapsulation type.

WS_DLL_PUBLIC const char *	wtap_encap_description (int encap)
	Get a human-readable description for an encapsulation type.

WS_DLL_PUBLIC int	wtap_name_to_encap (const char *short_name)
	Convert a short encapsulation name to its WTAP_ENCAP_ value.

WS_DLL_PUBLIC const char *	wtap_tsprec_string (int tsprec)
	Convert a timestamp precision constant to a string.

WS_DLL_PUBLIC const char *	wtap_strerror (int err)
	Return a human-readable error string for a WTAP error code.

WS_DLL_PUBLIC int	wtap_get_num_file_type_extensions (void)
	Return the number of registered file type extension groups.

WS_DLL_PUBLIC int	wtap_get_num_encap_types (void)
	Return the number of known encapsulation types.

WS_DLL_PUBLIC const char *	wtap_get_file_extension_type_name (int extension_type)
	Get the short name for a file extension type.

WS_DLL_PUBLIC GSList *	wtap_get_file_extension_type_extensions (unsigned extension_type)
	Get the list of extensions for a file extension type.

WS_DLL_PUBLIC void	wtap_register_file_type_extension (const struct file_extension_info *ei)
	Register file extension information for a file type.

WS_DLL_PUBLIC void	wtap_register_plugin (const wtap_plugin *plug)
	Register a wiretap plugin.

WS_DLL_PUBLIC int	wtap_plugins_supported (void)
	Query whether libwiretap plugin loading is available.

WS_DLL_PUBLIC void	wtap_register_open_info (struct open_info *oi, const bool first_routine)
	Register an open_info probe/open handler.

WS_DLL_PUBLIC bool	wtap_has_open_info (const char *name)
	Check if an open_info handler with the given name is registered.

WS_DLL_PUBLIC bool	wtap_uses_lua_filehandler (const wtap *wth)
	Check whether a wtap handle uses a Lua-based file handler.

WS_DLL_PUBLIC void	wtap_deregister_open_info (const char *name)
	Deregister an open_info handler by name.

WS_DLL_PUBLIC unsigned int	open_info_name_to_type (const char *name)
	Convert an open_info short name to its numeric type.

WS_DLL_PUBLIC int	wtap_register_file_type_subtype (const struct file_type_subtype_info *fi)
	Register a file type/subtype.

WS_DLL_PUBLIC void	wtap_deregister_file_type_subtype (const int file_type_subtype)
	Deregister a previously registered file type/subtype.

WS_DLL_PUBLIC int	wtap_register_encap_type (const char description, const char name)
	Register a new packet encapsulation type.

WS_DLL_PUBLIC void	wtap_cleanup (void)
	Clean up libwiretap internal registrations and plugin state.

Variables
WS_DLL_PUBLIC struct open_info *	open_routines
	Table of registered wiretap file open handlers.

Detailed Description

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

Macro Definition Documentation

◆ IS_80211AD

#define IS_80211AD ( frequency )

Value:

(((frequency) >= PHDR_802_11AD_MIN_FREQUENCY) &&\

((frequency) <= PHDR_802_11AD_MAX_FREQUENCY))

◆ NO_OPTIONS_SUPPORTED

#define NO_OPTIONS_SUPPORTED 0, NULL

Declare that no option types are supported for a block.

Expands to zero and NULL, indicating absence of supported options.

◆ OPTION_TYPES_SUPPORTED

#define OPTION_TYPES_SUPPORTED ( option_type_array ) array_length(option_type_array), option_type_array

Declare supported option types for a block.

Expands to the length of the option type array and the array itself.

◆ PACK_FLAGS_VALUE

#define PACK_FLAGS_VALUE	(	direction,
		reception_type,
		fcs_length,
		ll_dependent_errors
	)

Value:

    (((direction) << 30) | \
    ((reception_type) << 27) | \
    ((fcs_length) << 23) | \
    (ll_dependent_errors))

◆ REC_TYPE_CUSTOM_BLOCK

#define REC_TYPE_CUSTOM_BLOCK 5

pcapng custom block

◆ REC_TYPE_FT_SPECIFIC_EVENT

#define REC_TYPE_FT_SPECIFIC_EVENT 1

file-type-specific event

◆ REC_TYPE_FT_SPECIFIC_REPORT

#define REC_TYPE_FT_SPECIFIC_REPORT 2

file-type-specific report

◆ REC_TYPE_PACKET

#define REC_TYPE_PACKET 0

packet

◆ REC_TYPE_SYSCALL

#define REC_TYPE_SYSCALL 3

system call

◆ REC_TYPE_SYSTEMD_JOURNAL_EXPORT

#define REC_TYPE_SYSTEMD_JOURNAL_EXPORT 4

systemd journal entry

◆ WTAP_COMMENT_PER_INTERFACE

#define WTAP_COMMENT_PER_INTERFACE 0x00000002 /* per-interface */

Comment applies to a specific interface.

Useful for describing interface-specific settings or observations.

◆ WTAP_COMMENT_PER_PACKET

#define WTAP_COMMENT_PER_PACKET 0x00000004 /* per-packet */

Comment applies to an individual packet.

Enables fine-grained annotations such as decoding notes or anomalies.

◆ WTAP_COMMENT_PER_SECTION

#define WTAP_COMMENT_PER_SECTION 0x00000001 /* per-file/per-file-section */

Comment applies to the entire file or file section.

Used for global annotations such as capture metadata or session notes.

◆ WTAP_ERR_BAD_FILE

#define WTAP_ERR_BAD_FILE -13

The file appears to be damaged or corrupted or otherwise bogus

◆ WTAP_ERR_CANT_CLOSE

#define WTAP_ERR_CANT_CLOSE -11

The file couldn't be closed, reason unknown

◆ WTAP_ERR_CANT_OPEN

#define WTAP_ERR_CANT_OPEN -6

The file couldn't be opened, reason unknown

◆ WTAP_ERR_CANT_SEEK

#define WTAP_ERR_CANT_SEEK -18

An attempt to seek failed, reason unknown

◆ WTAP_ERR_CANT_SEEK_COMPRESSED

#define WTAP_ERR_CANT_SEEK_COMPRESSED -19

An attempt to seek on a compressed stream

◆ WTAP_ERR_CANT_WRITE

#define WTAP_ERR_CANT_WRITE -10

An attempt to read failed, reason unknown

◆ WTAP_ERR_CANT_WRITE_TO_PIPE

#define WTAP_ERR_CANT_WRITE_TO_PIPE -5

Wiretap can't save to a pipe in the specified format

◆ WTAP_ERR_CHECK_WSLUA

#define WTAP_ERR_CHECK_WSLUA -23

Not really an error: the file type being checked is from a Lua plugin, so that the code will call wslua_can_write_encap() instead if it gets this

◆ WTAP_ERR_COMPRESSION_NOT_SUPPORTED

#define WTAP_ERR_COMPRESSION_NOT_SUPPORTED -17

The filetype doesn't support output compression

◆ WTAP_ERR_DECOMPRESS

#define WTAP_ERR_DECOMPRESS -20

Error decompressing

◆ WTAP_ERR_DECOMPRESSION_NOT_SUPPORTED

#define WTAP_ERR_DECOMPRESSION_NOT_SUPPORTED -26

We don't support decompressing that type of compressed file

◆ WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED

#define WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED -9

The specified format doesn't support per-packet encapsulations

◆ WTAP_ERR_FILE_UNKNOWN_FORMAT

#define WTAP_ERR_FILE_UNKNOWN_FORMAT -3

The file being opened is not a capture file in a known format

◆ WTAP_ERR_INTERNAL

#define WTAP_ERR_INTERNAL -21

"Shouldn't happen" internal errors

◆ WTAP_ERR_NOT_REGULAR_FILE

#define WTAP_ERR_NOT_REGULAR_FILE -1

Wiretap error codes. The file being opened for reading isn't a plain file (or pipe)

◆ WTAP_ERR_PACKET_TOO_LARGE

#define WTAP_ERR_PACKET_TOO_LARGE -22

Packet being written is larger than we support; do not use when reading, use WTAP_ERR_BAD_FILE instead

◆ WTAP_ERR_RANDOM_OPEN_PIPE

#define WTAP_ERR_RANDOM_OPEN_PIPE -2

The file is being opened for random access and it's a pipe

◆ WTAP_ERR_RANDOM_OPEN_STDIN

#define WTAP_ERR_RANDOM_OPEN_STDIN -16

We're trying to open the standard input for random access

◆ WTAP_ERR_REC_MALFORMED

#define WTAP_ERR_REC_MALFORMED -28

Packet being read is of a known type, but is malformed so it will be skipped. This can be used instead of WTAP_ERR_BAD_FILE to not stop reading of a file

◆ WTAP_ERR_SHORT_READ

#define WTAP_ERR_SHORT_READ -12

An attempt to read less data than it should have

◆ WTAP_ERR_SHORT_WRITE

#define WTAP_ERR_SHORT_WRITE -14

An attempt to write wrote less data than it should have

◆ WTAP_ERR_TIME_STAMP_NOT_SUPPORTED

#define WTAP_ERR_TIME_STAMP_NOT_SUPPORTED -27

We don't support writing that record's time stamp to that file type

◆ WTAP_ERR_UNC_OVERFLOW

#define WTAP_ERR_UNC_OVERFLOW -15

Uncompressing Sniffer data would overflow buffer

◆ WTAP_ERR_UNSUPPORTED

#define WTAP_ERR_UNSUPPORTED -4

Supported file type, but there's something in the file we're reading that we can't support

◆ WTAP_ERR_UNWRITABLE_ENCAP

#define WTAP_ERR_UNWRITABLE_ENCAP -8

Wiretap can't read or save files in the specified format with the specified encapsulation

◆ WTAP_ERR_UNWRITABLE_FILE_TYPE

#define WTAP_ERR_UNWRITABLE_FILE_TYPE -7

Wiretap can't save files in the specified format

◆ WTAP_ERR_UNWRITABLE_REC_DATA

#define WTAP_ERR_UNWRITABLE_REC_DATA -25

Something in the record data can't be written to that file type

◆ WTAP_ERR_UNWRITABLE_REC_TYPE

#define WTAP_ERR_UNWRITABLE_REC_TYPE -24

Specified record type can't be written to that file type

◆ WTAP_HAS_CAP_LEN

#define WTAP_HAS_CAP_LEN 0x00000002

captured length separate from on-the-network length

◆ WTAP_HAS_INTERFACE_ID

#define WTAP_HAS_INTERFACE_ID 0x00000004

interface ID

◆ WTAP_HAS_SECTION_NUMBER

#define WTAP_HAS_SECTION_NUMBER 0x00000008

section number

◆ WTAP_HAS_TS

#define WTAP_HAS_TS 0x00000001

time stamp

Typedef Documentation

◆ addrinfo_lists_t

typedef struct addrinfo_lists addrinfo_lists_t

A struct with lists of resolved addresses. Used when writing name resolutions blocks (NRB)

◆ wtap_dump_params

typedef struct wtap_dump_params wtap_dump_params

Parameters for various wtap_dump_* functions, specifying per-file information. The structure itself is no longer used after returning from wtap_dump_*, but its pointer fields must remain valid until wtap_dump_close is called.

Note: The shb_hdr and idb_inf arguments will be used until wtap_dump_close() is called, but will not be free'd by the dumper. If you created them, you must free them yourself after wtap_dump_close(). dsbs_initial will be unreferenced by wtap_dump_close(), so to reuse them for another dump file, call wtap_block_array_ref() before closing. dsbs_growing typically refers to another wth->dsbs. nrbs_growing typically refers to another wth->nrbs.

See also: wtap_dump_params_init, wtap_dump_params_cleanup.

◆ wtap_new_ipv4_callback_t

typedef void(* wtap_new_ipv4_callback_t) (const unsigned addr, const char *name, const bool static_entry)

Callback type for registering new IPv4 hostnames.

Used to associate an IPv4 address with a hostname during file parsing. Must match the signature of add_ipv4_name in addr_resolv.c.

Parameters

addr	IPv4 address in host byte order.
name	Hostname to associate.
static_entry	True if the entry is static; false if dynamic.

◆ wtap_new_ipv6_callback_t

typedef void(* wtap_new_ipv6_callback_t) (const ws_in6_addr *addrp, const char *name, const bool static_entry)

Callback type for registering new IPv6 hostnames.

Used to associate an IPv6 address with a hostname during file parsing. Must match the signature of add_ipv6_name in addr_resolv.c.

Parameters

addrp	Pointer to IPv6 address.
name	Hostname to associate.
static_entry	True if the entry is static; false if dynamic.

◆ wtap_new_secrets_callback_t

typedef void(* wtap_new_secrets_callback_t) (uint32_t secrets_type, const void *secrets, unsigned size)

Callback type for receiving new decryption secrets.

Used to register secrets (e.g., TLS keys) discovered during file parsing. The secrets type is defined in secrets-types.h. Currently used only for pcapng.

Parameters

secrets_type	Type identifier for the secrets.
secrets	Pointer to the secrets data.
size	Size of the secrets data in bytes.

Enumeration Type Documentation

◆ option_support_t

enum option_support_t

Indicates how a file format supports a given option type.

Used to describe whether a block type can include zero, one, or multiple instances of a specific option type.

For a given option type in a certain block type, does a file format not support it, support only one such option, or support multiple such options?

Enumerator
OPTION_NOT_SUPPORTED	The option type is not supported in this block.
ONE_OPTION_SUPPORTED	Only one instance of the option type is supported.
MULTIPLE_OPTIONS_SUPPORTED	Multiple instances of the option type are supported.

◆ wtap_open_return_val

enum wtap_open_return_val

For registering file types that we can open.

Each file type has an open routine.

The open routine should return:

 WTAP_OPEN_ERROR on an I/O error;

 WTAP_OPEN_MINE if the file it's reading is one of the types
 it handles;

 WTAP_OPEN_NOT_MINE if the file it's reading isn't one of the
 types it handles.

If the routine handles this type of file, it should set the "file_type_subtype" field in the "struct wtap" to the type of the file.

Note that the routine does not have to free the private data pointer on error. The caller takes care of that by calling wtap_close on error. (See https://gitlab.com/wireshark/wireshark/-/issues/8518)

However, the caller does have to free the private data pointer when returning WTAP_OPEN_NOT_MINE, since the next file type will be called and will likely just overwrite the pointer.

Enumerator
WTAP_OPEN_NOT_MINE	File isn't handled by this module.
WTAP_OPEN_MINE	File is handled by this module.
WTAP_OPEN_ERROR	I/O error occurred while opening the file.

◆ wtap_open_type

enum wtap_open_type

Strategy used to identify a file format.

Some file formats have defined magic numbers at fixed offsets from the beginning of the file; those routines should return 1 if and only if the file has the magic number at that offset. (pcapng is a bit of a special case, as it has both the Section Header Block type field and its byte-order magic field; it checks for both.) Those file formats do not require a file name extension in order to recognize them or to avoid recognizing other file types as that type, and have no extensions specified for them.

Other file formats don't have defined magic numbers at fixed offsets, so a heuristic is required. If that file format has any file name extensions used for it, a list of those extensions should be specified, so that, if the name of the file being opened has an extension, the file formats that use that extension are tried before the ones that don't, to handle the case where a file of one type might be recognized by the heuristics for a different file type.

Enumerator
OPEN_INFO_MAGIC	Format identified by a fixed magic number at a known offset.
OPEN_INFO_HEURISTIC	Format identified by heuristic inspection of file contents.

Function Documentation

◆ cleanup_open_routines()

void cleanup_open_routines ( void )

Clean up registered file open routines.

Frees any resources or state associated with wiretap module open handlers. Typically called during shutdown or module unloading.

◆ open_info_name_to_type()

WS_DLL_PUBLIC unsigned int open_info_name_to_type ( const char * name )

Convert an open_info short name to its numeric type.

Parameters

name	Short name.

Returns: Unsigned type identifier (implementation-defined sentinel if not found).

◆ wtap_buffer_append_epdu_end()

WS_DLL_PUBLIC int wtap_buffer_append_epdu_end ( Buffer * buf )

Close off a set of "exported PDUs" added to the buffer. For filetype readers to transform non-packetized data.

Parameters

[in,out] buf Buffer into which to write field

Returns: Total length of buf populated to date

◆ wtap_buffer_append_epdu_string()

WS_DLL_PUBLIC void wtap_buffer_append_epdu_string	(	Buffer *	buf,
		uint16_t	epdu_tag,
		const char *	val
	)

Generates packet data for a string in "exported PDU" format. For filetype readers to transform non-packetized data.

Parameters

[in,out]	buf	Buffer into which to write field
	epdu_tag	tag ID of field to create
	val	string value to write to buf

◆ wtap_buffer_append_epdu_tag()

WS_DLL_PUBLIC void wtap_buffer_append_epdu_tag	(	Buffer *	buf,
		uint16_t	epdu_tag,
		const uint8_t *	data,
		uint16_t	data_len
	)

Generates arbitrary packet data in "exported PDU" format and appends it to buf.

For filetype readers to transform non-packetized data. Calls ws_buffer_asssure_space() for you and handles padding to 4-byte boundary.

Parameters

[in,out]	buf	Buffer into which to write field
	epdu_tag	tag ID of field to create
	data	data to be written
	data_len	length of data

◆ wtap_buffer_append_epdu_uint()

WS_DLL_PUBLIC void wtap_buffer_append_epdu_uint	(	Buffer *	buf,
		uint16_t	epdu_tag,
		uint32_t	val
	)

Generates packet data for an unsigned integer in "exported PDU" format. For filetype readers to transform non-packetized data.

Parameters

[in,out]	buf	Buffer into which to write field
	epdu_tag	tag ID of field to create
	val	integer value to write to buf

◆ wtap_cleareof()

WS_DLL_PUBLIC void wtap_cleareof ( wtap * wth )

Clear EOF status for a wiretap file.

If compiled with zlib and the file is at EOF, this resets the EOF flag to allow continued reading. Useful when tailing a file that may grow.

Parameters

wth	Wiretap file handle.

◆ wtap_close()

WS_DLL_PUBLIC void wtap_close ( wtap * wth )

Fully close the wiretap file and release all resources.

Closes any open file handles and frees memory associated with the wiretap handle.

Parameters

wth	Wiretap file handle.

◆ wtap_default_file_extension()

WS_DLL_PUBLIC const char * wtap_default_file_extension ( int file_type_subtype )

Get the default file extension for a file type/subtype.

Returns the canonical, unprefixed extension (without a leading ".") to use when saving files of the specified file type/subtype.

The returned string is owned by the library and must not be freed by the caller.

Parameters

file_type_subtype File type/subtype identifier.

Returns: Pointer to a static string containing the default extension, or NULL if unknown.

◆ wtap_deregister_file_type_subtype()

WS_DLL_PUBLIC void wtap_deregister_file_type_subtype ( const int file_type_subtype )

Deregister a previously registered file type/subtype.

Parameters

file_type_subtype Identifier returned by registration.

◆ wtap_deregister_open_info()

WS_DLL_PUBLIC void wtap_deregister_open_info ( const char * name )

Deregister an open_info handler by name.

Parameters

name	Short name of the handler to remove.

◆ wtap_dump_add_idb()

WS_DLL_PUBLIC bool wtap_dump_add_idb	(	wtap_dumper *	wdh,
		wtap_block_t	idb,
		int *	err,
		char **	err_info
	)

Add an IDB to the list of IDBs for a file we're writing. Makes a copy of the IDB, so it can be freed after this call is made.

Parameters

	wdh	handle for the file we're writing.
	idb	the IDB to add
[out]	err	Will be set to an error code on failure.
[out]	err_info	for some errors, a string giving more details of the error.

Returns: true on success, false on failure.

◆ wtap_dump_can_compress()

WS_DLL_PUBLIC bool wtap_dump_can_compress ( int file_type_subtype )

Check if a file type/subtype supports compression.

Returns true if the specified file format can be written in compressed form.

Parameters

file_type_subtype File type/subtype identifier.

Returns: True if compression is supported; false otherwise.

◆ wtap_dump_can_open()

WS_DLL_PUBLIC bool wtap_dump_can_open ( int filetype )

Check if a file type can be opened for dumping.

Determines whether the specified file type supports writing packet data.

Parameters

filetype File type identifier.

Returns: True if dumping is supported; false otherwise.

◆ wtap_dump_can_write()

WS_DLL_PUBLIC bool wtap_dump_can_write	(	const GArray *	file_encaps,
		uint32_t	required_comment_types
	)

Determine whether a capture file can be written with the specified options.

Returns true if a capture file can be created that supports all encapsulation types listed in file_encaps and supports all comment types indicated by the required_comment_types bitmask.

The encapsulation list is a GArray of WTAP_ENCAP_ values. The comment types bitmask uses WTAP_COMMENT_TYPE_ flags that indicate which comment features (per-packet, per-file, per-block, etc.) must be supported by the output format.

Parameters

file_encaps	GArray of WTAP_ENCAP_ values representing packet encapsulations required.
required_comment_types	Bitmask of required comment type flags.

Returns: True if at least one file format/subtype can be written that satisfies both the encapsulation requirements and the comment type requirements; false otherwise.

◆ wtap_dump_can_write_encap()

WS_DLL_PUBLIC bool wtap_dump_can_write_encap	(	int	file_type_subtype,
		int	encap
	)

Check if a file type/subtype supports writing a given encapsulation.

Returns true if the specified encapsulation type can be written in the given file format; false otherwise.

Parameters

file_type_subtype	File type/subtype identifier.
encap	Encapsulation type (WTAP_ENCAP_...).

Returns: True if supported; false if not.

◆ wtap_dump_close()

WS_DLL_PUBLIC bool wtap_dump_close	(	wtap_dumper *	wdh,
		bool *	needs_reload,
		int *	err,
		char **	err_info
	)

Closes open file handles and frees memory associated with wdh. Note that shb_hdr and idb_inf are not freed by this routine.

Parameters

	wdh	handle for the file we're closing.
[out]	needs_reload	if not null, points to a bool that will be set to true if a full reload of the file would be required if this was done as part of a "Save" or "Save As" operation, false if no full reload would be required.
[out]	err	points to an int that will be set to an error code on failure.
[out]	err_info	for some errors, points to a char * that will be set to a string giving more details of the error.

Returns: true on success, false on failure.

◆ wtap_dump_fdopen()

WS_DLL_PUBLIC wtap_dumper * wtap_dump_fdopen	(	int	fd,
		int	file_type_subtype,
		ws_compression_type	compression_type,
		const wtap_dump_params *	params,
		int *	err,
		char **	err_info
	)

Creates a dumper for an existing file descriptor.

Parameters

	fd	The file descriptor for which the dumper should be created.
	file_type_subtype	The WTAP_FILE_TYPE_SUBTYPE_XXX file type.
	compression_type	Type of compression to use when writing, if any
	params	The per-file information for this file.
[out]	err	Will be set to an error code on failure.
[out]	err_info	for some errors, a string giving more details of the error

Returns: The newly created dumper object, or NULL on failure.

◆ wtap_dump_open()

WS_DLL_PUBLIC wtap_dumper * wtap_dump_open	(	const char *	filename,
		int	file_type_subtype,
		ws_compression_type	compression_type,
		const wtap_dump_params *	params,
		int *	err,
		char **	err_info
	)

Opens a new capture file for writing.

Parameters

	filename	The new file's name.
	file_type_subtype	The WTAP_FILE_TYPE_SUBTYPE_XXX file type.
	compression_type	Type of compression to use when writing, if any
	params	The per-file information for this file.
[out]	err	Will be set to an error code on failure.
[out]	err_info	for some errors, a string giving more details of the error

Returns: The newly created dumper object, or NULL on failure.

◆ wtap_dump_open_stdout()

WS_DLL_PUBLIC wtap_dumper * wtap_dump_open_stdout	(	int	file_type_subtype,
		ws_compression_type	compression_type,
		const wtap_dump_params *	params,
		int *	err,
		char **	err_info
	)

Creates a dumper for the standard output.

Parameters

	file_type_subtype	The WTAP_FILE_TYPE_SUBTYPE_XXX file type.
	compression_type	Type of compression to use when writing, if any
	params	The per-file information for this file.
[out]	err	Will be set to an error code on failure.
[out]	err_info	for some errors, a string giving more details of the error

Returns: The newly created dumper object, or NULL on failure.

◆ wtap_dump_open_tempfile()

WS_DLL_PUBLIC wtap_dumper * wtap_dump_open_tempfile	(	const char *	tmpdir,
		char **	filenamep,
		const char *	pfx,
		int	file_type_subtype,
		ws_compression_type	compression_type,
		const wtap_dump_params *	params,
		int *	err,
		char **	err_info
	)

Creates a dumper for a temporary file.

Parameters

	tmpdir	Directory in which to create the temporary file.
	filenamep	Points to a pointer that's set to point to the pathname of the temporary file; it's allocated with g_malloc()
	pfx	A string to be used as the prefix for the temporary file name
	file_type_subtype	The WTAP_FILE_TYPE_SUBTYPE_XXX file type.
	compression_type	Type of compression to use when writing, if any
	params	The per-file information for this file.
[out]	err	Will be set to an error code on failure.
[out]	err_info	for some errors, a string giving more details of the error

Returns: The newly created dumper object, or NULL on failure.

◆ wtap_dump_params_cleanup()

WS_DLL_PUBLIC void wtap_dump_params_cleanup ( wtap_dump_params * params )

Free memory associated with the wtap_dump_params when it is no longer in use by wtap_dumper.

Parameters

params The parameters as initialized by wtap_dump_params_init.

◆ wtap_dump_params_discard_decryption_secrets()

WS_DLL_PUBLIC void wtap_dump_params_discard_decryption_secrets ( wtap_dump_params * params )

Remove any decryption secret information from the per-file information; used if we're stripping decryption secrets as we write the file.

Parameters

params The parameters for wtap_dump_* from which to remove the decryption secrets..

◆ wtap_dump_params_discard_name_resolution()

WS_DLL_PUBLIC void wtap_dump_params_discard_name_resolution ( wtap_dump_params * params )

Remove any name resolution information from the per-file information; used if we're stripping name resolution as we write the file.

Parameters

params The parameters for wtap_dump_* from which to remove the name resolution..

◆ wtap_dump_params_init()

WS_DLL_PUBLIC void wtap_dump_params_init	(	wtap_dump_params *	params,
		wtap *	wth
	)

Initialize the per-file information based on an existing file.

Its contents must be freed according to the requirements of wtap_dump_params. If wth does not remain valid for the duration of the session, dsbs_growing MUST be cleared after this function.

Parameters

params	The parameters for wtap_dump_* to initialize.
wth	The wiretap session.

◆ wtap_dump_params_init_no_idbs()

WS_DLL_PUBLIC void wtap_dump_params_init_no_idbs	(	wtap_dump_params *	params,
		wtap *	wth
	)

Initialize the per-file information based on an existing file, but don't copy over the interface information.

Its contents must be freed according to the requirements of wtap_dump_params. If wth does not remain valid for the duration of the session, dsbs_growing MUST be cleared after this function.

XXX - this should eventually become wtap_dump_params_init(), with all programs writing capture files copying IDBs over by hand, so that they handle IDBs in the middle of the file.

Parameters

params	The parameters for wtap_dump_* to initialize.
wth	The wiretap session.

◆ wtap_dump_required_file_encap_type()

WS_DLL_PUBLIC int wtap_dump_required_file_encap_type ( const GArray * file_encaps )

Determine the required per-file encapsulation type.

Given an array of WTAP_ENCAP_ types, returns the appropriate per-file encapsulation type needed to write a file containing all of them. May return WTAP_ENCAP_PER_PACKET if multiple types are present and the format supports it.

Parameters

file_encaps GArray of WTAP_ENCAP_ values.

Returns: Required per-file encapsulation type.

◆ wtap_encap_description()

WS_DLL_PUBLIC const char * wtap_encap_description ( int encap )

Get a human-readable description for an encapsulation type.

Returns a descriptive string suitable for UI display or logs describing the encapsulation.

Parameters

encap Encapsulation type (WTAP_ENCAP_...).

Returns: Pointer to a static string containing the description, or NULL if unknown.

◆ wtap_encap_name()

WS_DLL_PUBLIC const char * wtap_encap_name ( int encap )

Get a short name for an encapsulation type.

Returns a short, programmer-friendly name for the given WTAP_ENCAP_ value.

Parameters

encap Encapsulation type (WTAP_ENCAP_...).

Returns: Pointer to a static string containing the short name, or NULL if unknown.

◆ wtap_fdclose()

WS_DLL_PUBLIC void wtap_fdclose ( wtap * wth )

Close all file descriptors for the current wiretap file.

Releases both sequential and random-access file handles.

Parameters

wth	Wiretap file handle.

◆ wtap_fdreopen()

WS_DLL_PUBLIC bool wtap_fdreopen	(	wtap *	wth,
		const char *	filename,
		int *	err
	)

Reopen the random-access file descriptor for the current file.

Useful when switching access modes or recovering from descriptor loss.

Parameters

wth	Wiretap file handle.
filename	Path to the file to reopen.
err	Pointer to an error code variable.

Returns: True on success; false on failure.

◆ wtap_file_add_decryption_secrets()

WS_DLL_PUBLIC void wtap_file_add_decryption_secrets	(	wtap *	wth,
		const wtap_block_t	dsb
	)

Adds a Decryption Secrets Block to the open wiretap session.

The passed-in DSB is added to the DSBs for the current session.

Parameters

wth	The wiretap session.
dsb	The Decryption Secrets Block to add

◆ wtap_file_discard_decryption_secrets()

WS_DLL_PUBLIC bool wtap_file_discard_decryption_secrets ( wtap * wth )

Remove any decryption secret information from the per-file information; used if we're stripping decryption secrets while the file is open.

Parameters

wth	The wiretap session from which to remove the decryption secrets.

Returns: true if any DSBs were removed

◆ wtap_file_encap()

WS_DLL_PUBLIC int wtap_file_encap ( wtap * wth )

Get the encapsulation type for the capture file.

Returns the WTAP_ENCAP_... value used for packet encapsulation.

Parameters

wth	Wiretap file handle.

Returns: Encapsulation type.

◆ wtap_file_end_ts()

WS_DLL_PUBLIC const nstime_t * wtap_file_end_ts ( wtap * wth )

Get the end timestamp of the capture file.

Returns a pointer to the last packet's timestamp, if available.

Parameters

wth	Wiretap file handle.

Returns: Pointer to end timestamp, or NULL if unavailable.

◆ wtap_file_get_dsb()

WS_DLL_PUBLIC wtap_block_t wtap_file_get_dsb	(	wtap *	wth,
		unsigned	dsb_num
	)

Gets existing decryption secrets block, not for new file.

Returns the pointer to an existing DSB, without creating a new one. This should only be used for accessing info.

Parameters

wth	The wiretap session.
dsb_num	The ordinal number (0-based) of the decryption secrets block in the file

Returns: The specified existing decryption secrets block, which must NOT be g_free'd.

◆ wtap_file_get_idb_info()

WS_DLL_PUBLIC wtapng_iface_descriptions_t * wtap_file_get_idb_info ( wtap * wth )

Gets existing interface descriptions.

Returns a new struct containing a pointer to the existing description, without creating new descriptions internally.

Note: The returned pointer must be g_free'd, but its internal interface_data must not.

Parameters

wth	The wiretap session.

Returns: A new struct of the existing section descriptions, which must be g_free'd.

◆ wtap_file_get_nrb()

WS_DLL_PUBLIC wtap_block_t wtap_file_get_nrb ( wtap * wth )

Gets existing name resolution block, not for new file.

Returns the pointer to the existing NRB, without creating a new one. This should only be used for accessing info, not for creating a new file based on existing NRB info. Use wtap_file_get_nrb_for_new_file() for that.

Parameters

wth	The wiretap session.

Returns: The existing section header, which must NOT be g_free'd.

XXX - need to be updated to handle multiple NRBs.

◆ wtap_file_get_num_dsbs()

WS_DLL_PUBLIC unsigned wtap_file_get_num_dsbs ( wtap * wth )

Gets number of decryption secrets blocks.

Returns the number of existing DSBs.

Parameters

wth	The wiretap session.

Returns: The number of existing decryption secrets blocks.

◆ wtap_file_get_num_shbs()

WS_DLL_PUBLIC unsigned wtap_file_get_num_shbs ( wtap * wth )

Gets number of section header blocks.

Returns the number of existing SHBs.

Parameters

wth	The wiretap session.

Returns: The number of existing section headers.

◆ wtap_file_get_shb()

WS_DLL_PUBLIC wtap_block_t wtap_file_get_shb	(	wtap *	wth,
		unsigned	shb_num
	)

Gets existing section header block, not for new file.

Returns the pointer to an existing SHB, without creating a new one. This should only be used for accessing info, not for creating a new file based on existing SHB info. Use wtap_file_get_shb_for_new_file() for that.

Parameters

wth	The wiretap session.
shb_num	The ordinal number (0-based) of the section header in the file

Returns: The specified existing section header, which must NOT be g_free'd.

◆ wtap_file_get_shb_global_interface_id()

WS_DLL_PUBLIC unsigned wtap_file_get_shb_global_interface_id	(	wtap *	wth,
		unsigned	shb_num,
		uint32_t	interface_id
	)

Gets the unique interface id for a SHB's interface.

Given an existing SHB number and an interface ID within that section, returns the unique ordinal number (0-based) of that interface over the entire wiretap session.

Parameters

wth	The wiretap session.
shb_num	The ordinal number (0-based) of a section header
interface_id	An interface id within the section

Returns: The unique wtap session-wide interface id for that interface

◆ wtap_file_size()

WS_DLL_PUBLIC int64_t wtap_file_size	(	wtap *	wth,
		int *	err
	)

Get the size of the capture file.

Returns the total file size in bytes. On failure, sets an error code.

Parameters

wth	Wiretap file handle.
err	Pointer to an error code variable.

Returns: File size in bytes, or -1 on error.

◆ wtap_file_start_ts()

WS_DLL_PUBLIC const nstime_t * wtap_file_start_ts ( wtap * wth )

Get the start timestamp of the capture file.

Returns a pointer to the first packet's timestamp, if available.

Parameters

wth	Wiretap file handle.

Returns: Pointer to start timestamp, or NULL if unavailable.

◆ wtap_file_tsprec()

WS_DLL_PUBLIC int wtap_file_tsprec ( wtap * wth )

Get the timestamp precision for the capture file.

Returns the WTAP_TSPREC_... value indicating timestamp resolution.

Parameters

wth	Wiretap file handle.

Returns: Timestamp precision.

◆ wtap_file_type_subtype()

WS_DLL_PUBLIC int wtap_file_type_subtype ( wtap * wth )

Get the file type subtype.

Returns the format-specific subtype identifier for the capture file.

Parameters

wth	Wiretap file handle.

Returns: File type subtype.

◆ wtap_file_type_subtype_description()

WS_DLL_PUBLIC const char * wtap_file_type_subtype_description ( int file_type_subtype )

Get a human-readable description for a file type/subtype.

Returns a descriptive string suitable for UI display or logs that describes the given file type/subtype.

Parameters

file_type_subtype File type/subtype identifier.

Returns: Pointer to a static string describing the file type/subtype, or NULL if unknown.

◆ wtap_file_type_subtype_name()

WS_DLL_PUBLIC const char * wtap_file_type_subtype_name ( int file_type_subtype )

Get a short name for a file type/subtype.

Returns a concise, programmer-friendly name for the given file type/subtype.

Parameters

file_type_subtype File type/subtype identifier.

Returns: Pointer to a static string containing the short name, or NULL if unknown.

◆ wtap_file_type_subtype_supports_block()

WS_DLL_PUBLIC block_support_t wtap_file_type_subtype_supports_block	(	int	file_type_subtype,
		wtap_block_type_t	type
	)

Determine whether a capture file format supports a given block type.

Returns how the specified file type/subtype handles the supplied block type, indicating whether the block is supported, optional, required, or not supported.

Parameters

file_type_subtype	File type/subtype identifier.
type	Block type to query (wtap_block_type_t).

Returns: block_support_t value describing support level for the block in the format.

◆ wtap_file_type_subtype_supports_option()

WS_DLL_PUBLIC option_support_t wtap_file_type_subtype_supports_option	(	int	file_type_subtype,
		wtap_block_type_t	type,
		unsigned	opttype
	)

Determine whether a capture file format supports a specific option for a block.

Queries the support level for the given option type within the specified block for a particular file type/subtype.

The returned value indicates whether the option is supported, optional, required, or not supported in that file format/subtype.

Parameters

file_type_subtype	File type/subtype identifier.
type	Block type to query (wtap_block_type_t).
opttype	Option type identifier (option type number).

Returns: option_support_t value describing the support level for the option.

◆ wtap_free_extensions_list()

WS_DLL_PUBLIC void wtap_free_extensions_list ( GSList * extensions )

Free a list of file extension strings returned by extension helpers.

Frees the GSList and each string it contains. The list must have been returned by one of:

Each string in the list is freed with g_free() before the list itself is freed.

Parameters

extensions GSList of char* strings to free; may be NULL.

◆ wtap_free_idb_info()

WS_DLL_PUBLIC void wtap_free_idb_info ( wtapng_iface_descriptions_t * idb_info )

Free's a interface description block and all of its members.

This free's all of the interface descriptions inside the passed-in struct, including their members (e.g., comments); and then free's the passed-in struct as well.

Warning: Do not use this for the struct returned by wtap_file_get_idb_info(), as that one did not create the internal interface descriptions; for that case you can simply g_free() the new struct.

◆ wtap_get_all_capture_file_extensions_list()

WS_DLL_PUBLIC GSList * wtap_get_all_capture_file_extensions_list ( void )

Return a list of all extensions that are used by all capture file types, including compressed extensions, e.g. not just "pcap" but also "pcap.gz" if we can read gzipped files.

"Capture files" means "include file types that correspond to collections of network packets, but not file types that store data that just happens to be transported over protocols such as HTTP but that aren't collections of network packets", so that it could be used for "All Capture Files" without picking up JPEG files or files such as that - those aren't capture files, and we do have them listed in the long list of individual file types, so omitting them from "All Capture Files" is the right thing to do.

All strings in the list are allocated with g_malloc() and must be freed with g_free().

This is used to generate a list of extensions to look for if the user chooses "All Capture Files" in a file open dialog.

Returns: GSList* of char* strings containing file extensions; NULL if none are known.

◆ wtap_get_all_file_extensions_list()

WS_DLL_PUBLIC GSList * wtap_get_all_file_extensions_list ( void )

Return a list of all extensions that are used by all file types that we can read, including compressed extensions, e.g. not just "pcap" but also "pcap.gz" if we can read gzipped files.

"File type" means "include file types that correspond to collections of network packets, as well as file types that store data that just happens to be transported over protocols such as HTTP but that aren't collections of network packets, and plain text files".

All strings in the list are allocated with g_malloc() and must be freed with g_free().

Returns: GSList* of char* strings containing file extensions; NULL if none are known.

◆ wtap_get_compression_type()

WS_DLL_PUBLIC ws_compression_type wtap_get_compression_type ( wtap * wth )

Get the compression type used for the capture file.

Returns the compression method applied to the file, if any.

Parameters

wth	Wiretap file handle.

Returns: Compression type (e.g., none, gzip).

◆ wtap_get_debug_if_descr()

WS_DLL_PUBLIC char * wtap_get_debug_if_descr	(	const wtap_block_t	if_descr,
		const int	indent,
		const char *	line_end
	)

Gets a debug string of an interface description.

Returns a newly allocated string of debug information about the given interface description, useful for debugging.

Note: The returned pointer must be g_free'd.

Parameters

if_descr	The interface description.
indent	Number of spaces to indent each line by.
line_end	A string to append to each line (e.g., "\n" or ", ").

Returns: A newly allocated gcahr array string, which must be g_free'd.

◆ wtap_get_file_extension_type_extensions()

WS_DLL_PUBLIC GSList * wtap_get_file_extension_type_extensions ( unsigned extension_type )

Get the list of extensions for a file extension type.

Returns a GSList of strings containing the file extensions associated with the specified extension type. Each string is allocated with g_malloc() and must be freed with g_free() by the caller. The list itself should be freed with wtap_free_extensions_list().

Parameters

extension_type File extension type identifier.

Returns: GSList* of char* strings containing extensions (without leading '.'), or NULL if none are known.

◆ wtap_get_file_extension_type_name()

WS_DLL_PUBLIC const char * wtap_get_file_extension_type_name ( int extension_type )

Get the short name for a file extension type.

Returns a short, programmer-friendly name for the given file extension type identifier (for example, a canonical key used in UI lists).

The returned string is owned by the library and must not be freed by the caller.

Parameters

extension_type File extension type identifier.

Returns: Pointer to a static string containing the short name, or NULL if unknown.

◆ wtap_get_file_extensions_list()

WS_DLL_PUBLIC GSList * wtap_get_file_extensions_list	(	int	file_type_subtype,
		bool	include_compressed
	)

Return a list of file extensions that are used by the specified file type and subtype.

If include_compressed is true, the list will include compressed extensions, e.g. not just "pcap" but also "pcap.gz" if we can read gzipped files.

All strings in the list are allocated with g_malloc() and must be freed with g_free().

Parameters

file_type_subtype	File type/subtype identifier.
include_compressed	True to include compressed extensions; false to include only uncompressed ones.

Returns: GSList* of char* strings containing file extensions; NULL if none are known.

◆ wtap_get_next_interface_description()

WS_DLL_PUBLIC wtap_block_t wtap_get_next_interface_description ( wtap * wth )

Gets next interface description.

This returns the first unfetched wtap_block_t from the set of interface descriptions. Returns NULL if there are no more unfetched interface descriptions; a subsequent call after wtap_read() returns, either with a new record or an EOF, may return another interface description.

◆ wtap_get_num_encap_types()

WS_DLL_PUBLIC int wtap_get_num_encap_types ( void )

Return the number of known encapsulation types.

Returns the count of WTAP_ENCAP_ values the library recognizes.

Returns: Number of encapsulation types.

◆ wtap_get_num_file_type_extensions()

WS_DLL_PUBLIC int wtap_get_num_file_type_extensions ( void )

Return the number of registered file type extension groups.

Returns the count of known file type extension entries (the number of different file type / extension groups the library knows about).

Returns: Number of file type extension entries.

◆ wtap_get_savable_file_types_subtypes_for_file()

WS_DLL_PUBLIC GArray * wtap_get_savable_file_types_subtypes_for_file	(	int	file_type_subtype,
		const GArray *	file_encaps,
		uint32_t	required_comment_types,
		ft_sort_order	sort_order
	)

Get savable file type/subtype candidates for saving a capture file.

Get a GArray of file type/subtype values for file types/subtypes that can be used to save a file of a given type with a given GArray of WTAP_ENCAP_ types and the given bitmask of comment types.

The returned GArray contains int values (file type/subtype identifiers) and must be freed with g_array_unref() by the caller.

Parameters

file_type_subtype	File type/subtype identifier of the source file.
file_encaps	GArray of WTAP_ENCAP_ values representing required encapsulations.
required_comment_types	Bitmask of required comment type flags.
sort_order	Ordering to apply to the returned list (ft_sort_order).

Returns: GArray* of int file type/subtype values, or NULL if none are available.

◆ wtap_get_writable_file_types_subtypes()

WS_DLL_PUBLIC GArray * wtap_get_writable_file_types_subtypes ( ft_sort_order sort_order )

Get a list of all writable file type/subtype values.

Returns a GArray containing all registered file type/subtype identifiers that support writing (dumping) capture files. The array elements are int values representing file type/subtype identifiers and must be freed with g_array_unref() by the caller.

Parameters

sort_order Ordering to apply to the returned list (ft_sort_order).

Returns: GArray* of int file type/subtype values, or NULL if none are available.

◆ wtap_has_open_info()

WS_DLL_PUBLIC bool wtap_has_open_info ( const char * name )

Check if an open_info handler with the given name is registered.

Parameters

name	Short name of the handler.

Returns: true if registered, false otherwise.

◆ wtap_init()

WS_DLL_PUBLIC void wtap_init	(	bool	load_wiretap_plugins,
		const char *	app_env_var_prefix,
		const struct file_extension_info *	file_extensions,
		unsigned	num_extensions
	)

Initialize the Wiretap library.

Parameters

load_wiretap_plugins	Load Wiretap plugins when initializing library.
app_env_var_prefix	The prefix for the application environment variable used to get the personal config directory.
file_extensions	Array of file extensions supported by the application
num_extensions	Number of file extensions supported by the application

◆ wtap_name_to_encap()

WS_DLL_PUBLIC int wtap_name_to_encap ( const char * short_name )

Convert a short encapsulation name to its WTAP_ENCAP_ value.

Parses a short encap name (as returned by wtap_encap_name) and returns the corresponding encapsulation constant.

Parameters

short_name Short encap name string.

Returns: WTAP_ENCAP_ value on success, or -1 if the name is not recognized.

◆ wtap_name_to_file_type_subtype()

WS_DLL_PUBLIC int wtap_name_to_file_type_subtype ( const char * name )

Convert a file type/subtype name to its identifier.

Parses a short name (as returned by wtap_file_type_subtype_name) and returns the corresponding file type/subtype identifier.

Parameters

name	Short name string for the file type/subtype.

Returns: File type/subtype identifier on success, or -1 if the name is not recognized.

◆ wtap_open_offline()

WS_DLL_PUBLIC struct wtap * wtap_open_offline	(	const char *	filename,
		unsigned int	type,
		int *	err,
		char **	err_info,
		bool	do_random,
		const char *	app_env_var_prefix
	)

Open a capture file for offline analysis.

Attempts to open the specified file using either automatic format detection or an explicitly chosen format. On failure, returns NULL and stores error details into the "int" pointed to by its second argument:

Parameters

	filename	Name of the file to open
	type	WTAP_TYPE_AUTO for automatic recognize file format or explicit choose format type
[out]	err	a positive "errno" value if the capture file can't be opened; a negative number, indicating the type of error, on other failures.
[out]	err_info	for some errors, a string giving more details of the error
	do_random	true if random access to the file will be done,
	app_env_var_prefix	The prefix for the application environment variable used to get the personal config directory. false if not

◆ wtap_pcap_file_type_subtype()

WS_DLL_PUBLIC int wtap_pcap_file_type_subtype ( void )

Get the file type/subtype identifier for classic pcap (microsecond timestamps).

Returns: File type/subtype identifier for pcap.

◆ wtap_pcap_nsec_file_type_subtype()

WS_DLL_PUBLIC int wtap_pcap_nsec_file_type_subtype ( void )

Get the file type/subtype identifier for pcap with nanosecond timestamps.

Returns: File type/subtype identifier for pcap with nanosecond precision.

◆ wtap_pcapng_file_type_subtype()

WS_DLL_PUBLIC int wtap_pcapng_file_type_subtype ( void )

Get the file type/subtype identifier for pcapng.

Returns: File type/subtype identifier for pcapng.

◆ wtap_plugins_supported()

WS_DLL_PUBLIC int wtap_plugins_supported ( void )

Query whether libwiretap plugin loading is available.

Returns a status code indicating whether libwiretap can load plugins on the current platform and build configuration.

Return values: 0 Plugins can be loaded for libwiretap (file type). 1 Plugins are not supported by the platform. -1 Plugins were disabled in the build configuration.

Returns: int status code as described above.

◆ wtap_read()

WS_DLL_PUBLIC bool wtap_read	(	wtap *	wth,
		wtap_rec *	rec,
		int *	err,
		char **	err_info,
		int64_t *	offset
	)

Read the next record in the file, filling in *phdr and *buf.

Parameters

wth	a wtap * returned by a call that opened a file for reading.
rec	a pointer to a wtap_rec, filled in with information about the record and the data from the record.
err	a positive "errno" value, or a negative number indicating the type of error, if the read failed.
err_info	for some errors, a string giving more details of the error
offset	a pointer to a int64_t, set to the offset in the file that should be used on calls to wtap_seek_read() to reread that record, if the read succeeded.

Returns: true on success, false on failure.

◆ wtap_read_so_far()

WS_DLL_PUBLIC int64_t wtap_read_so_far ( wtap * wth )

Return an approximation of the amount of data read sequentially.

Provides a rough estimate of how many bytes have been read from the file so far, useful for progress tracking or tailing scenarios.

Parameters

wth	Wiretap file handle.

Returns: Number of bytes read sequentially.

◆ wtap_rec_apply_snapshot()

WS_DLL_PUBLIC void wtap_rec_apply_snapshot	(	wtap_rec *	rec,
		uint32_t	snaplen
	)

Apply a snapshot length to a wtap_rec.

Sets the maximum captured packet length for the record.

Parameters

rec	Pointer to the wtap_rec structure.
snaplen	Snapshot length in bytes.

◆ wtap_rec_cleanup()

WS_DLL_PUBLIC void wtap_rec_cleanup ( wtap_rec * rec )

Clean up a wtap_rec structure.

Frees any memory allocated by wtap_rec_init().

Parameters

rec	Pointer to the wtap_rec structure.

◆ wtap_rec_init()

WS_DLL_PUBLIC void wtap_rec_init	(	wtap_rec *	rec,
		size_t	space
	)

Initialize a wtap_rec structure.

Allocates internal space and prepares the record for use.

Parameters

rec	Pointer to the wtap_rec structure.
space	Size of internal allocation.

◆ wtap_rec_reset()

WS_DLL_PUBLIC void wtap_rec_reset ( wtap_rec * rec )

Re-initialize a wtap_rec structure.

Clears existing content and resets the record for reuse.

Parameters

rec	Pointer to the wtap_rec structure.

◆ wtap_register_encap_type()

WS_DLL_PUBLIC int wtap_register_encap_type	(	const char *	description,
		const char *	name
	)

Register a new packet encapsulation type.

Parameters

description	Human-readable description.
name	Short canonical name.

Returns: Encapsulation id on success, negative on failure.

◆ wtap_register_file_type_extension()

WS_DLL_PUBLIC void wtap_register_file_type_extension ( const struct file_extension_info * ei )

Register file extension information for a file type.

Dynamically registers a new file type's extension metadata so the library can recognize and present the extensions in UI lists and file dialogs.

The caller retains ownership of ei; the function will copy or reference the data as needed according to the library's registration semantics.

Parameters

ei	Pointer to a file_extension_info structure describing the file type's extensions.

◆ wtap_register_file_type_subtype()

WS_DLL_PUBLIC int wtap_register_file_type_subtype ( const struct file_type_subtype_info * fi )

Register a file type/subtype.

Parameters

fi	Pointer to file_type_subtype_info.

Returns: non-negative file_type_subtype id on success, negative on failure.

◆ wtap_register_open_info()

WS_DLL_PUBLIC void wtap_register_open_info	(	struct open_info *	oi,
		const bool	first_routine
	)

Register an open_info probe/open handler.

Parameters

oi	Pointer to open_info descriptor.
first_routine	If true, insert at front of probe list.

◆ wtap_register_plugin()

WS_DLL_PUBLIC void wtap_register_plugin ( const wtap_plugin * plug )

Register a wiretap plugin.

Registers a plugin with the library. If the plugin provides a register_wtap_module callback, that callback will be invoked to perform module-specific registrations (file formats, encapsulations, extensions, etc.).

The caller retains ownership of plug.

Parameters

plug	Pointer to a wtap_plugin describing the plugin's registration callback(s).

◆ wtap_seek_read()

WS_DLL_PUBLIC bool wtap_seek_read	(	wtap *	wth,
		int64_t	seek_off,
		wtap_rec *	rec,
		int *	err,
		char **	err_info
	)

Read the record at a specified offset in a capture file, filling in *phdr and *buf.

Parameters

wth	a wtap * returned by a call that opened a file for random-access reading.
seek_off	a int64_t giving an offset value returned by a previous wtap_read() call.
rec	a pointer to a struct wtap_rec, filled in with information about the record and the data from the record.
err	a positive "errno" value, or a negative number indicating the type of error, if the read failed.
err_info	for some errors, a string giving more details of the error

Returns: true on success, false on failure.

◆ wtap_sequential_close()

WS_DLL_PUBLIC void wtap_sequential_close ( wtap * wth )

Close the sequential-access side of the file.

Frees memory associated with buffered reads while retaining random-access capability.

Parameters

wth	Wiretap file handle.

◆ wtap_set_cb_new_ipv4()

WS_DLL_PUBLIC void wtap_set_cb_new_ipv4	(	wtap *	wth,
		wtap_new_ipv4_callback_t	add_new_ipv4
	)

Set the callback for adding new IPv4 hostnames.

Registers a function to be called when new IPv4 addresses are discovered. Currently used only for pcapng files.

Parameters

wth	Wiretap file handle.
add_new_ipv4	Callback function to register.

◆ wtap_set_cb_new_ipv6()

WS_DLL_PUBLIC void wtap_set_cb_new_ipv6	(	wtap *	wth,
		wtap_new_ipv6_callback_t	add_new_ipv6
	)

Set the callback for adding new IPv6 hostnames.

Registers a function to be called when new IPv6 addresses are discovered. Currently used only for pcapng files.

Parameters

wth	Wiretap file handle.
add_new_ipv6	Callback function to register.

◆ wtap_set_cb_new_secrets()

WS_DLL_PUBLIC void wtap_set_cb_new_secrets	(	wtap *	wth,
		wtap_new_secrets_callback_t	add_new_secrets
	)

Set the callback for receiving new decryption secrets.

Registers a function to be called when decryption secrets are discovered. Currently used only for pcapng files.

Parameters

wth	Wiretap file handle.
add_new_secrets	Callback function to register.

◆ wtap_setup_custom_block_rec()

WS_DLL_PUBLIC void wtap_setup_custom_block_rec	(	wtap_rec *	rec,
		uint32_t	pen,
		uint32_t	payload_length,
		bool	copy_allowed
	)

Set up a wtap_rec for a custom block.

Initializes the record as REC_TYPE_CUSTOM_BLOCK with the given Private Enterprise Number (PEN), payload length, and copy permission flag.

Parameters

rec	Pointer to the wtap_rec structure.
pen	Private Enterprise Number identifying the block owner.
payload_length	Length of the custom block payload in bytes.
copy_allowed	True if copying the block is permitted; false otherwise.

Set up a wtap_rec for a custom block (REC_TYPE_CUSTOM_BLOCK).

◆ wtap_setup_ft_specific_event_rec()

WS_DLL_PUBLIC void wtap_setup_ft_specific_event_rec	(	wtap_rec *	rec,
		int	file_type_subtype,
		unsigned	record_type
	)

Set up a wtap_rec for a file-type specific event.

Initializes the record as REC_TYPE_FT_SPECIFIC_EVENT with the given subtype and record type.

Parameters

rec	Pointer to the wtap_rec structure.
file_type_subtype	Format-specific subtype identifier.
record_type	Format-specific record type identifier.

Set up a wtap_rec for a file-type specific event (REC_TYPE_FT_SPECIFIC_EVENT);

◆ wtap_setup_ft_specific_report_rec()

WS_DLL_PUBLIC void wtap_setup_ft_specific_report_rec	(	wtap_rec *	rec,
		int	file_type_subtype,
		unsigned	record_type
	)

Set up a wtap_rec for a file-type specific report.

Initializes the record as REC_TYPE_FT_SPECIFIC_REPORT with the given subtype and record type.

Parameters

rec	Pointer to the wtap_rec structure.
file_type_subtype	Format-specific subtype identifier.
record_type	Format-specific record type identifier.

Set up a wtap_rec for a file-type specific report (REC_TYPE_FT_SPECIFIC_REPORT);

◆ wtap_setup_packet_rec()

WS_DLL_PUBLIC void wtap_setup_packet_rec	(	wtap_rec *	rec,
		int	encap
	)

Set up a wtap_rec for a packet (REC_TYPE_PACKET).

Initializes the record type and encapsulation for a packet record.

Parameters

rec	Pointer to the wtap_rec structure.
encap	Encapsulation type (WTAP_ENCAP_...).

Set up a wtap_rec for a packet (REC_TYPE_PACKET).

◆ wtap_setup_syscall_rec()

WS_DLL_PUBLIC void wtap_setup_syscall_rec ( wtap_rec * rec )

Set up a wtap_rec for a system call.

Initializes the record as REC_TYPE_SYSCALL for syscall trace data.

Parameters

rec	Pointer to the wtap_rec structure.

Set up a wtap_rec for a system call (REC_TYPE_SYSCALL).

◆ wtap_setup_systemd_journal_export_rec()

WS_DLL_PUBLIC void wtap_setup_systemd_journal_export_rec ( wtap_rec * rec )

Set up a wtap_rec for a systemd journal export entry.

Initializes the record as REC_TYPE_SYSTEMD_JOURNAL_EXPORT for journal export data.

Parameters

rec	Pointer to the wtap_rec structure.

Set up a wtap_rec for a systemd journal export entry (REC_TYPE_SYSTEMD_JOURNAL_EXPORT).

◆ wtap_snapshot_length()

WS_DLL_PUBLIC unsigned wtap_snapshot_length ( wtap * wth )

Get the snapshot length for the capture file.

Returns the maximum number of bytes captured per packet.

Parameters

wth	Wiretap file handle.

Returns: Snapshot length in bytes.

◆ wtap_strerror()

WS_DLL_PUBLIC const char * wtap_strerror ( int err )

Return a human-readable error string for a WTAP error code.

Maps wiretap error codes to descriptive strings for logging and diagnostics.

Parameters

err	WTAP error code.

Returns: Pointer to a static string describing the error, or a generic message if unknown.

◆ wtap_tsprec_string()

WS_DLL_PUBLIC const char * wtap_tsprec_string ( int tsprec )

Convert a timestamp precision constant to a string.

Returns a short string describing the timestamp precision (e.g., "microsecond", "nanosecond").

Parameters

tsprec Timestamp precision constant (WTAP_TSPREC_...).

Returns: Pointer to a static string describing the precision, or NULL if unknown.

◆ wtap_unwritable_rec_type_err_string()

WS_DLL_PUBLIC char * wtap_unwritable_rec_type_err_string ( const wtap_rec * rec )

Return an error string for WTAP_ERR_UNWRITABLE_REC_TYPE.

Provides a human-readable explanation for why a given record type cannot be written to a file.

Parameters

rec	Pointer to the wtap_rec structure.

Returns: Error string describing the issue.

Return an error string for WTAP_ERR_UNWRITABLE_REC_TYPE.

◆ wtap_uses_lua_filehandler()

WS_DLL_PUBLIC bool wtap_uses_lua_filehandler ( const wtap * wth )

Check whether a wtap handle uses a Lua-based file handler.

Parameters

wth	Pointer to wtap handle.

Returns: true if backed by a Lua filehandler, false otherwise.

◆ wtap_write_shb_comment()

WS_DLL_PUBLIC void wtap_write_shb_comment	(	wtap *	wth,
		char *	comment
	)

Sets or replaces the section header comment.

The passed-in comment string is set to be the comment for the section header block. The passed-in string's ownership will be owned by the block, so it should be duplicated before passing into this function.

Parameters

wth	The wiretap session.
comment	The comment string.

Variable Documentation

◆ open_routines

WS_DLL_PUBLIC struct open_info* open_routines

Table of registered wiretap file open handlers.

Each entry describes how to recognize and open a supported file format. Populated during wiretap module initialization.

Classes

Macros

Typedefs

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ IS_80211AD

◆ NO_OPTIONS_SUPPORTED

◆ OPTION_TYPES_SUPPORTED

◆ PACK_FLAGS_VALUE

◆ REC_TYPE_CUSTOM_BLOCK

◆ REC_TYPE_FT_SPECIFIC_EVENT

◆ REC_TYPE_FT_SPECIFIC_REPORT

◆ REC_TYPE_PACKET

◆ REC_TYPE_SYSCALL

◆ REC_TYPE_SYSTEMD_JOURNAL_EXPORT

◆ WTAP_COMMENT_PER_INTERFACE

◆ WTAP_COMMENT_PER_PACKET

◆ WTAP_COMMENT_PER_SECTION

◆ WTAP_ERR_BAD_FILE

◆ WTAP_ERR_CANT_CLOSE

◆ WTAP_ERR_CANT_OPEN

◆ WTAP_ERR_CANT_SEEK

◆ WTAP_ERR_CANT_SEEK_COMPRESSED

◆ WTAP_ERR_CANT_WRITE

◆ WTAP_ERR_CANT_WRITE_TO_PIPE

◆ WTAP_ERR_CHECK_WSLUA

◆ WTAP_ERR_COMPRESSION_NOT_SUPPORTED

◆ WTAP_ERR_DECOMPRESS

◆ WTAP_ERR_DECOMPRESSION_NOT_SUPPORTED

◆ WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED

◆ WTAP_ERR_FILE_UNKNOWN_FORMAT

◆ WTAP_ERR_INTERNAL

◆ WTAP_ERR_NOT_REGULAR_FILE

◆ WTAP_ERR_PACKET_TOO_LARGE

◆ WTAP_ERR_RANDOM_OPEN_PIPE

◆ WTAP_ERR_RANDOM_OPEN_STDIN

◆ WTAP_ERR_REC_MALFORMED

◆ WTAP_ERR_SHORT_READ

◆ WTAP_ERR_SHORT_WRITE

◆ WTAP_ERR_TIME_STAMP_NOT_SUPPORTED

◆ WTAP_ERR_UNC_OVERFLOW

◆ WTAP_ERR_UNSUPPORTED

◆ WTAP_ERR_UNWRITABLE_ENCAP

◆ WTAP_ERR_UNWRITABLE_FILE_TYPE

◆ WTAP_ERR_UNWRITABLE_REC_DATA

◆ WTAP_ERR_UNWRITABLE_REC_TYPE

◆ WTAP_HAS_CAP_LEN

◆ WTAP_HAS_INTERFACE_ID

◆ WTAP_HAS_SECTION_NUMBER

◆ WTAP_HAS_TS

Typedef Documentation

◆ addrinfo_lists_t

◆ wtap_dump_params

◆ wtap_new_ipv4_callback_t

◆ wtap_new_ipv6_callback_t

◆ wtap_new_secrets_callback_t

Enumeration Type Documentation

◆ option_support_t

◆ wtap_open_return_val

◆ wtap_open_type

Function Documentation

◆ cleanup_open_routines()

◆ open_info_name_to_type()

◆ wtap_buffer_append_epdu_end()

◆ wtap_buffer_append_epdu_string()

◆ wtap_buffer_append_epdu_tag()

◆ wtap_buffer_append_epdu_uint()

◆ wtap_cleareof()

◆ wtap_close()

◆ wtap_default_file_extension()

◆ wtap_deregister_file_type_subtype()

◆ wtap_deregister_open_info()

◆ wtap_dump_add_idb()

◆ wtap_dump_can_compress()

◆ wtap_dump_can_open()

◆ wtap_dump_can_write()

◆ wtap_dump_can_write_encap()