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Diffstat (limited to 'netdissect.h')
| -rw-r--r-- | netdissect.h | 794 |
1 files changed, 794 insertions, 0 deletions
diff --git a/netdissect.h b/netdissect.h new file mode 100644 index 0000000..b1074ef --- /dev/null +++ b/netdissect.h @@ -0,0 +1,794 @@ +/* + * Copyright (c) 1988-1997 + * The Regents of the University of California. All rights reserved. + * + * Copyright (c) 1998-2012 Michael Richardson <mcr@tcpdump.org> + * The TCPDUMP project + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code distributions + * retain the above copyright notice and this paragraph in its entirety, (2) + * distributions including binary code include the above copyright notice and + * this paragraph in its entirety in the documentation or other materials + * provided with the distribution, and (3) all advertising materials mentioning + * features or use of this software display the following acknowledgement: + * ``This product includes software developed by the University of California, + * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of + * the University nor the names of its contributors may be used to endorse + * or promote products derived from this software without specific prior + * written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef netdissect_h +#define netdissect_h + +#ifdef HAVE_OS_PROTO_H +#include "os-proto.h" +#endif +#include <sys/types.h> +#include <setjmp.h> +#include "status-exit-codes.h" +#include "funcattrs.h" /* for PRINTFLIKE_FUNCPTR() */ +#include "diag-control.h" /* for ND_UNREACHABLE */ + +/* + * Data types corresponding to multi-byte integral values within data + * structures. These are defined as arrays of octets, so that they're + * not aligned on their "natural" boundaries, and so that you *must* + * use the EXTRACT_ macros to extract them (which you should be doing + * *anyway*, so as not to assume a particular byte order or alignment + * in your code). + * + * We even want EXTRACT_U_1 used for 8-bit integral values, so we + * define nd_uint8_t and nd_int8_t as arrays as well. + */ +typedef unsigned char nd_uint8_t[1]; +typedef unsigned char nd_uint16_t[2]; +typedef unsigned char nd_uint24_t[3]; +typedef unsigned char nd_uint32_t[4]; +typedef unsigned char nd_uint40_t[5]; +typedef unsigned char nd_uint48_t[6]; +typedef unsigned char nd_uint56_t[7]; +typedef unsigned char nd_uint64_t[8]; + +typedef signed char nd_int8_t[1]; + +/* + * "unsigned char" so that sign extension isn't done on the + * individual bytes while they're being assembled. + */ +typedef unsigned char nd_int32_t[4]; +typedef unsigned char nd_int64_t[8]; + +#define FMAXINT (4294967296.0) /* floating point rep. of MAXINT */ + +/* + * Use this for IPv4 addresses and netmasks. + * + * It's defined as an array of octets, so that it's not guaranteed to + * be aligned on its "natural" boundary (in some packet formats, it + * *isn't* so aligned). We have separate EXTRACT_ calls for them; + * sometimes you want the host-byte-order value, other times you want + * the network-byte-order value. + * + * Don't use EXTRACT_BE_U_4() on them, use EXTRACT_IPV4_TO_HOST_ORDER() + * if you want them in host byte order and EXTRACT_IPV4_TO_NETWORK_ORDER() + * if you want them in network byte order (which you want with system APIs + * that expect network-order IPv4 addresses, such as inet_ntop()). + * + * If, on your little-endian machine (e.g., an "IBM-compatible PC", no matter + * what the OS, or an Intel Mac, no matter what the OS), you get the wrong + * answer, and you've used EXTRACT_BE_U_4(), do *N*O*T* "fix" this by using + * EXTRACT_LE_U_4(), fix it by using EXTRACT_IPV4_TO_NETWORK_ORDER(), + * otherwise you're breaking the result on big-endian machines (e.g., + * most PowerPC/Power ISA machines, System/390 and z/Architecture, SPARC, + * etc.). + * + * Yes, people do this; that's why Wireshark has tvb_get_ipv4(), to extract + * an IPv4 address from a packet data buffer; it was introduced in reaction + * to somebody who *had* done that. + */ +typedef unsigned char nd_ipv4[4]; + +/* + * Use this for IPv6 addresses and netmasks. + */ +typedef unsigned char nd_ipv6[16]; + +/* + * Use this for MAC addresses. + */ +#define MAC_ADDR_LEN 6U /* length of MAC addresses */ +typedef unsigned char nd_mac_addr[MAC_ADDR_LEN]; + +/* + * Use this for blobs of bytes; make them arrays of nd_byte. + */ +typedef unsigned char nd_byte; + +/* + * Round up x to a multiple of y; y must be a power of 2. + */ +#ifndef roundup2 +#define roundup2(x, y) (((x)+((u_int)((y)-1)))&(~((u_int)((y)-1)))) +#endif + +#include <stdarg.h> +#include <pcap.h> + +#include "ip.h" /* struct ip for nextproto4_cksum() */ +#include "ip6.h" /* struct ip6 for nextproto6_cksum() */ + +#ifndef HAVE_STRLCAT +extern size_t strlcat (char *, const char *, size_t); +#endif +#ifndef HAVE_STRLCPY +extern size_t strlcpy (char *, const char *, size_t); +#endif + +#ifndef HAVE_STRDUP +extern char *strdup (const char *str); +#endif + +#ifndef HAVE_STRSEP +extern char *strsep(char **, const char *); +#endif + +struct tok { + u_int v; /* value */ + const char *s; /* string */ +}; + +/* tok2str is deprecated */ +extern const char *tok2str(const struct tok *, const char *, u_int); +extern char *bittok2str(const struct tok *, const char *, u_int); +extern char *bittok2str_nosep(const struct tok *, const char *, u_int); + +/* Initialize netdissect. */ +extern int nd_init(char *, size_t); +/* Clean up netdissect. */ +extern void nd_cleanup(void); + +/* Do we have libsmi support? */ +extern int nd_have_smi_support(void); +/* Load an SMI module. */ +extern int nd_load_smi_module(const char *, char *, size_t); +/* Flag indicating whether an SMI module has been loaded. */ +extern int nd_smi_module_loaded; +/* Version number of the SMI library, or NULL if we don't have libsmi support. */ +extern const char *nd_smi_version_string(void); + +typedef struct netdissect_options netdissect_options; + +#define IF_PRINTER_ARGS (netdissect_options *, const struct pcap_pkthdr *, const u_char *) + +typedef void (*if_printer) IF_PRINTER_ARGS; + +/* + * In case the data in a buffer needs to be processed by being decrypted, + * decompressed, etc. before it's dissected, we can't process it in place, + * we have to allocate a new buffer for the processed data. + * + * We keep a stack of those buffers; when we allocate a new buffer, we + * push the current one onto a stack, and when we're done with the new + * buffer, we free the current buffer and pop the previous one off the + * stack. + * + * A buffer has a beginning and end pointer, and a link to the previous + * buffer on the stack. + * + * In other cases, we temporarily adjust the snapshot end to reflect a + * packet-length field in the packet data and, when finished dissecting + * that part of the packet, restore the old snapshot end. We keep that + * on the stack with null buffer pointer, meaning there's nothing to + * free. + */ +struct netdissect_saved_packet_info { + u_char *ndspi_buffer; /* pointer to allocated buffer data */ + const u_char *ndspi_packetp; /* saved beginning of data */ + const u_char *ndspi_snapend; /* saved end of data */ + struct netdissect_saved_packet_info *ndspi_prev; /* previous buffer on the stack */ +}; + +/* 'val' value(s) for longjmp */ +#define ND_TRUNCATED 1 + +struct netdissect_options { + int ndo_bflag; /* print 4 byte ASes in ASDOT notation */ + int ndo_eflag; /* print ethernet header */ + int ndo_fflag; /* don't translate "foreign" IP address */ + int ndo_Kflag; /* don't check IP, TCP or UDP checksums */ + int ndo_nflag; /* leave addresses as numbers */ + int ndo_Nflag; /* remove domains from printed host names */ + int ndo_qflag; /* quick (shorter) output */ + int ndo_Sflag; /* print raw TCP sequence numbers */ + int ndo_tflag; /* print packet arrival time */ + int ndo_uflag; /* Print undecoded NFS handles */ + int ndo_vflag; /* verbosity level */ + int ndo_xflag; /* print packet in hex */ + int ndo_Xflag; /* print packet in hex/ASCII */ + int ndo_Aflag; /* print packet only in ASCII observing TAB, + * LF, CR and SPACE as graphical chars + */ + int ndo_Hflag; /* dissect 802.11s draft mesh standard */ + const char *ndo_protocol; /* protocol */ + jmp_buf ndo_early_end; /* jmp_buf for setjmp()/longjmp() */ + void *ndo_last_mem_p; /* pointer to the last allocated memory chunk */ + int ndo_packet_number; /* print a packet number in the beginning of line */ + int ndo_suppress_default_print; /* don't use default_print() for unknown packet types */ + int ndo_tstamp_precision; /* requested time stamp precision */ + const char *program_name; /* Name of the program using the library */ + + char *ndo_espsecret; + struct sa_list *ndo_sa_list_head; /* used by print-esp.c */ + struct sa_list *ndo_sa_default; + + char *ndo_sigsecret; /* Signature verification secret key */ + + int ndo_packettype; /* as specified by -T */ + + int ndo_snaplen; + int ndo_ll_hdr_len; /* link-layer header length */ + + /*global pointers to beginning and end of current packet (during printing) */ + const u_char *ndo_packetp; + const u_char *ndo_snapend; + + /* stack of saved packet boundary and buffer information */ + struct netdissect_saved_packet_info *ndo_packet_info_stack; + + /* pointer to the if_printer function */ + if_printer ndo_if_printer; + + /* pointer to void function to output stuff */ + void (*ndo_default_print)(netdissect_options *, + const u_char *bp, u_int length); + + /* pointer to function to do regular output */ + int (*ndo_printf)(netdissect_options *, + const char *fmt, ...) + PRINTFLIKE_FUNCPTR(2, 3); + /* pointer to function to output errors */ + void NORETURN_FUNCPTR (*ndo_error)(netdissect_options *, + status_exit_codes_t status, + const char *fmt, ...) + PRINTFLIKE_FUNCPTR(3, 4); + /* pointer to function to output warnings */ + void (*ndo_warning)(netdissect_options *, + const char *fmt, ...) + PRINTFLIKE_FUNCPTR(2, 3); +}; + +extern WARN_UNUSED_RESULT int nd_push_buffer(netdissect_options *, u_char *, const u_char *, const u_int); +extern WARN_UNUSED_RESULT int nd_push_snaplen(netdissect_options *, const u_char *, const u_int); +extern void nd_change_snaplen(netdissect_options *, const u_char *, const u_int); +extern void nd_pop_packet_info(netdissect_options *); +extern void nd_pop_all_packet_info(netdissect_options *); + +static inline NORETURN void +nd_trunc_longjmp(netdissect_options *ndo) +{ + longjmp(ndo->ndo_early_end, ND_TRUNCATED); +#ifdef _AIX + /* + * In AIX <setjmp.h> decorates longjmp() with "#pragma leaves", which tells + * XL C that the function is noreturn, but GCC remains unaware of that and + * yields a "'noreturn' function does return" warning. + */ + ND_UNREACHABLE +#endif /* _AIX */ +} + +#define PT_VAT 1 /* Visual Audio Tool */ +#define PT_WB 2 /* distributed White Board */ +#define PT_RPC 3 /* Remote Procedure Call */ +#define PT_RTP 4 /* Real-Time Applications protocol */ +#define PT_RTCP 5 /* Real-Time Applications control protocol */ +#define PT_SNMP 6 /* Simple Network Management Protocol */ +#define PT_CNFP 7 /* Cisco NetFlow protocol */ +#define PT_TFTP 8 /* trivial file transfer protocol */ +#define PT_AODV 9 /* Ad-hoc On-demand Distance Vector Protocol */ +#define PT_CARP 10 /* Common Address Redundancy Protocol */ +#define PT_RADIUS 11 /* RADIUS authentication Protocol */ +#define PT_ZMTP1 12 /* ZeroMQ Message Transport Protocol 1.0 */ +#define PT_VXLAN 13 /* Virtual eXtensible Local Area Network */ +#define PT_PGM 14 /* [UDP-encapsulated] Pragmatic General Multicast */ +#define PT_PGM_ZMTP1 15 /* ZMTP/1.0 inside PGM (native or UDP-encapsulated) */ +#define PT_LMP 16 /* Link Management Protocol */ +#define PT_RESP 17 /* RESP */ +#define PT_PTP 18 /* PTP */ +#define PT_SOMEIP 19 /* Autosar SOME/IP Protocol */ +#define PT_DOMAIN 20 /* Domain Name System (DNS) */ + +#define ND_MIN(a,b) ((a)>(b)?(b):(a)) +#define ND_MAX(a,b) ((b)>(a)?(b):(a)) + +/* For source or destination ports tests (UDP, TCP, ...) */ +#define IS_SRC_OR_DST_PORT(p) (sport == (p) || dport == (p)) + +/* + * Maximum snapshot length. This should be enough to capture the full + * packet on most network interfaces. + * + * + * Somewhat arbitrary, but chosen to be: + * + * 1) big enough for maximum-size Linux loopback packets (65549) + * and some USB packets captured with USBPcap: + * + * https://desowin.org/usbpcap/ + * + * (> 131072, < 262144) + * + * and + * + * 2) small enough not to cause attempts to allocate huge amounts of + * memory; some applications might use the snapshot length in a + * savefile header to control the size of the buffer they allocate, + * so a size of, say, 2^31-1 might not work well. + * + * XXX - does it need to be bigger still? Note that, for versions of + * libpcap with pcap_create()/pcap_activate(), if no -s flag is specified + * or -s 0 is specified, we won't set the snapshot length at all, and will + * let libpcap choose a snapshot length; newer versions may choose a bigger + * value than 262144 for D-Bus, for example. + */ +#define MAXIMUM_SNAPLEN 262144 + +/* + * True if "l" bytes from "p" were captured. + * + * The "ndo->ndo_snapend - (l) <= ndo->ndo_snapend" checks to make sure + * "l" isn't so large that "ndo->ndo_snapend - (l)" underflows. + * + * The check is for <= rather than < because "l" might be 0. + * + * We cast the pointers to uintptr_t to make sure that the compiler + * doesn't optimize away any of these tests (which it is allowed to + * do, as adding an integer to, or subtracting an integer from, a + * pointer assumes that the pointer is a pointer to an element of an + * array and that the result of the addition or subtraction yields a + * pointer to another member of the array, so that, for example, if + * you subtract a positive integer from a pointer, the result is + * guaranteed to be less than the original pointer value). See + * + * https://www.kb.cert.org/vuls/id/162289 + */ + +/* + * Test in two parts to avoid these warnings: + * comparison of unsigned expression >= 0 is always true [-Wtype-limits], + * comparison is always true due to limited range of data type [-Wtype-limits]. + */ +#define IS_NOT_NEGATIVE(x) (((x) > 0) || ((x) == 0)) + +#define ND_TTEST_LEN(p, l) \ + (IS_NOT_NEGATIVE(l) && \ + ((uintptr_t)ndo->ndo_snapend - (l) <= (uintptr_t)ndo->ndo_snapend && \ + (uintptr_t)(p) <= (uintptr_t)ndo->ndo_snapend - (l))) + +/* True if "*(p)" was captured */ +#define ND_TTEST_SIZE(p) ND_TTEST_LEN(p, sizeof(*(p))) + +/* Bail out if "l" bytes from "p" were not captured */ +#ifdef ND_LONGJMP_FROM_TCHECK +#define ND_TCHECK_LEN(p, l) if (!ND_TTEST_LEN(p, l)) nd_trunc_longjmp(ndo) +#else +#define ND_TCHECK_LEN(p, l) if (!ND_TTEST_LEN(p, l)) goto trunc +#endif + +/* Bail out if "*(p)" was not captured */ +#define ND_TCHECK_SIZE(p) ND_TCHECK_LEN(p, sizeof(*(p))) + +/* + * Number of bytes between two pointers. + */ +#define ND_BYTES_BETWEEN(p1, p2) ((u_int)(((const uint8_t *)(p1)) - (const uint8_t *)(p2))) + +/* + * Number of bytes remaining in the captured data, starting at the + * byte pointed to by the argument. + */ +#define ND_BYTES_AVAILABLE_AFTER(p) ND_BYTES_BETWEEN(ndo->ndo_snapend, (p)) + +/* Check length < minimum for invalid packet with a custom message, format %u */ +#define ND_LCHECKMSG_U(length, minimum, what) \ +if ((length) < (minimum)) { \ +ND_PRINT(" [%s %u < %u]", (what), (length), (minimum)); \ +goto invalid; \ +} + +/* Check length < minimum for invalid packet with #length message, format %u */ +#define ND_LCHECK_U(length, minimum) \ +ND_LCHECKMSG_U((length), (minimum), (#length)) + +/* Check length < minimum for invalid packet with a custom message, format %zu */ +#define ND_LCHECKMSG_ZU(length, minimum, what) \ +if ((length) < (minimum)) { \ +ND_PRINT(" [%s %u < %zu]", (what), (length), (minimum)); \ +goto invalid; \ +} + +/* Check length < minimum for invalid packet with #length message, format %zu */ +#define ND_LCHECK_ZU(length, minimum) \ +ND_LCHECKMSG_ZU((length), (minimum), (#length)) + +#define ND_PRINT(...) (ndo->ndo_printf)(ndo, __VA_ARGS__) +#define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length) + +extern void ts_print(netdissect_options *, const struct timeval *); +extern void signed_relts_print(netdissect_options *, int32_t); +extern void unsigned_relts_print(netdissect_options *, uint32_t); + +extern const char *nd_format_time(char *buf, size_t bufsize, + const char *format, const struct tm *timeptr); + +extern void fn_print_char(netdissect_options *, u_char); +extern void fn_print_str(netdissect_options *, const u_char *); +extern u_int nd_printztn(netdissect_options *, const u_char *, u_int, const u_char *); +extern int nd_printn(netdissect_options *, const u_char *, u_int, const u_char *); +extern void nd_printjnp(netdissect_options *, const u_char *, u_int); + +/* + * Flags for txtproto_print(). + */ +#define RESP_CODE_SECOND_TOKEN 0x00000001 /* response code is second token in response line */ + +extern void txtproto_print(netdissect_options *, const u_char *, u_int, + const char **, u_int); + +#if (defined(__i386__) || defined(_M_IX86) || defined(__X86__) || defined(__x86_64__) || defined(_M_X64)) || \ + (defined(__arm__) || defined(_M_ARM) || defined(__aarch64__)) || \ + (defined(__m68k__) && (!defined(__mc68000__) && !defined(__mc68010__))) || \ + (defined(__ppc__) || defined(__ppc64__) || defined(_M_PPC) || defined(_ARCH_PPC) || defined(_ARCH_PPC64)) || \ + (defined(__s390__) || defined(__s390x__) || defined(__zarch__)) || \ + defined(__vax__) +/* + * The processor natively handles unaligned loads, so just use memcpy() + * and memcmp(), to enable those optimizations. + * + * XXX - are those all the x86 tests we need? + * XXX - do we need to worry about ARMv1 through ARMv5, which didn't + * support unaligned loads, and, if so, do we need to worry about all + * of them, or just some of them, e.g. ARMv5? + * XXX - are those the only 68k tests we need not to generated + * unaligned accesses if the target is the 68000 or 68010? + * XXX - are there any tests we don't need, because some definitions are for + * compilers that also predefine the GCC symbols? + * XXX - do we need to test for both 32-bit and 64-bit versions of those + * architectures in all cases? + */ +#define UNALIGNED_MEMCPY(p, q, l) memcpy((p), (q), (l)) +#define UNALIGNED_MEMCMP(p, q, l) memcmp((p), (q), (l)) +#else +/* + * The processor doesn't natively handle unaligned loads, + * and the compiler might "helpfully" optimize memcpy() + * and memcmp(), when handed pointers that would normally + * be properly aligned, into sequences that assume proper + * alignment. + * + * Do copies and compares of possibly-unaligned data by + * calling routines that wrap memcpy() and memcmp(), to + * prevent that optimization. + */ +extern void unaligned_memcpy(void *, const void *, size_t); +extern int unaligned_memcmp(const void *, const void *, size_t); +#define UNALIGNED_MEMCPY(p, q, l) unaligned_memcpy((p), (q), (l)) +#define UNALIGNED_MEMCMP(p, q, l) unaligned_memcmp((p), (q), (l)) +#endif + +#define PLURAL_SUFFIX(n) \ + (((n) != 1) ? "s" : "") + +extern const char *tok2strary_internal(const char **, int, const char *, int); +#define tok2strary(a,f,i) tok2strary_internal(a, sizeof(a)/sizeof(a[0]),f,i) + +struct uint_tokary +{ + u_int uintval; + const struct tok *tokary; +}; + +extern const struct tok *uint2tokary_internal(const struct uint_tokary[], const size_t, const u_int); +#define uint2tokary(a, i) uint2tokary_internal(a, sizeof(a)/sizeof(a[0]), i) + +extern if_printer lookup_printer(int); + +#define ND_DEBUG {printf(" [%s:%d %s] ", __FILE__, __LINE__, __func__); fflush(stdout);} + +/* The DLT printer routines */ + +extern void ap1394_if_print IF_PRINTER_ARGS; +extern void arcnet_if_print IF_PRINTER_ARGS; +extern void arcnet_linux_if_print IF_PRINTER_ARGS; +extern void atm_if_print IF_PRINTER_ARGS; +extern void brcm_tag_if_print IF_PRINTER_ARGS; +extern void brcm_tag_prepend_if_print IF_PRINTER_ARGS; +extern void bt_if_print IF_PRINTER_ARGS; +extern void chdlc_if_print IF_PRINTER_ARGS; +extern void cip_if_print IF_PRINTER_ARGS; +extern void dsa_if_print IF_PRINTER_ARGS; +extern void edsa_if_print IF_PRINTER_ARGS; +extern void enc_if_print IF_PRINTER_ARGS; +extern void ether_if_print IF_PRINTER_ARGS; +extern void fddi_if_print IF_PRINTER_ARGS; +extern void fr_if_print IF_PRINTER_ARGS; +extern void ieee802_11_if_print IF_PRINTER_ARGS; +extern void ieee802_11_radio_avs_if_print IF_PRINTER_ARGS; +extern void ieee802_11_radio_if_print IF_PRINTER_ARGS; +extern void ieee802_15_4_if_print IF_PRINTER_ARGS; +extern void ieee802_15_4_tap_if_print IF_PRINTER_ARGS; +extern void ipfc_if_print IF_PRINTER_ARGS; +extern void ipnet_if_print IF_PRINTER_ARGS; +extern void ipoib_if_print IF_PRINTER_ARGS; +extern void juniper_atm1_if_print IF_PRINTER_ARGS; +extern void juniper_atm2_if_print IF_PRINTER_ARGS; +extern void juniper_chdlc_if_print IF_PRINTER_ARGS; +extern void juniper_es_if_print IF_PRINTER_ARGS; +extern void juniper_ether_if_print IF_PRINTER_ARGS; +extern void juniper_frelay_if_print IF_PRINTER_ARGS; +extern void juniper_ggsn_if_print IF_PRINTER_ARGS; +extern void juniper_mfr_if_print IF_PRINTER_ARGS; +extern void juniper_mlfr_if_print IF_PRINTER_ARGS; +extern void juniper_mlppp_if_print IF_PRINTER_ARGS; +extern void juniper_monitor_if_print IF_PRINTER_ARGS; +extern void juniper_ppp_if_print IF_PRINTER_ARGS; +extern void juniper_pppoe_atm_if_print IF_PRINTER_ARGS; +extern void juniper_pppoe_if_print IF_PRINTER_ARGS; +extern void juniper_services_if_print IF_PRINTER_ARGS; +extern void ltalk_if_print IF_PRINTER_ARGS; +extern void mfr_if_print IF_PRINTER_ARGS; +extern void netanalyzer_if_print IF_PRINTER_ARGS; +extern void netanalyzer_transparent_if_print IF_PRINTER_ARGS; +extern void nflog_if_print IF_PRINTER_ARGS; +extern void null_if_print IF_PRINTER_ARGS; +extern void pflog_if_print IF_PRINTER_ARGS; +extern void pktap_if_print IF_PRINTER_ARGS; +extern void ppi_if_print IF_PRINTER_ARGS; +extern void ppp_bsdos_if_print IF_PRINTER_ARGS; +extern void ppp_hdlc_if_print IF_PRINTER_ARGS; +extern void ppp_if_print IF_PRINTER_ARGS; +extern void pppoe_if_print IF_PRINTER_ARGS; +extern void prism_if_print IF_PRINTER_ARGS; +extern void raw_if_print IF_PRINTER_ARGS; +extern void sl_bsdos_if_print IF_PRINTER_ARGS; +extern void sl_if_print IF_PRINTER_ARGS; +extern void sll2_if_print IF_PRINTER_ARGS; +extern void sll_if_print IF_PRINTER_ARGS; +extern void sunatm_if_print IF_PRINTER_ARGS; +extern void symantec_if_print IF_PRINTER_ARGS; +extern void token_if_print IF_PRINTER_ARGS; +extern void unsupported_if_print IF_PRINTER_ARGS; +extern void usb_linux_48_byte_if_print IF_PRINTER_ARGS; +extern void usb_linux_64_byte_if_print IF_PRINTER_ARGS; +extern void vsock_if_print IF_PRINTER_ARGS; + +/* + * Structure passed to some printers to allow them to print + * link-layer address information if ndo_eflag isn't set + * (because they are for protocols that don't have their + * own addresses, so that we'd want to report link-layer + * address information). + * + * This contains a pointer to an address and a pointer to a routine + * to which we pass that pointer in order to get a string. + */ +struct lladdr_info { + const char *(*addr_string)(netdissect_options *, const u_char *); + const u_char *addr; +}; + +/* The printer routines. */ + +extern void aarp_print(netdissect_options *, const u_char *, u_int); +extern int ah_print(netdissect_options *, const u_char *); +extern void ahcp_print(netdissect_options *, const u_char *, u_int); +extern void aodv_print(netdissect_options *, const u_char *, u_int, int); +extern void aoe_print(netdissect_options *, const u_char *, const u_int); +extern int arista_ethertype_print(netdissect_options *,const u_char *, u_int); +extern void arp_print(netdissect_options *, const u_char *, u_int, u_int); +extern void ascii_print(netdissect_options *, const u_char *, u_int); +extern void atalk_print(netdissect_options *, const u_char *, u_int); +extern void atm_print(netdissect_options *, u_int, u_int, u_int, const u_char *, u_int, u_int); +extern void babel_print(netdissect_options *, const u_char *, u_int); +extern void bcm_li_print(netdissect_options *, const u_char *, u_int); +extern void beep_print(netdissect_options *, const u_char *, u_int); +extern void bfd_print(netdissect_options *, const u_char *, u_int, u_int); +extern void bgp_print(netdissect_options *, const u_char *, u_int); +extern const char *bgp_vpn_rd_print(netdissect_options *, const u_char *); +extern void bootp_print(netdissect_options *, const u_char *, u_int); +extern void calm_fast_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *); +extern void carp_print(netdissect_options *, const u_char *, u_int, u_int); +extern void cdp_print(netdissect_options *, const u_char *, u_int); +extern void cfm_print(netdissect_options *, const u_char *, u_int); +extern u_int chdlc_print(netdissect_options *, const u_char *, u_int); +extern void cisco_autorp_print(netdissect_options *, const u_char *, u_int); +extern void cnfp_print(netdissect_options *, const u_char *); +extern void dccp_print(netdissect_options *, const u_char *, const u_char *, u_int); +extern void decnet_print(netdissect_options *, const u_char *, u_int, u_int); +extern void dhcp6_print(netdissect_options *, const u_char *, u_int); +extern int dstopt_process(netdissect_options *, const u_char *); +extern void dtp_print(netdissect_options *, const u_char *, u_int); +extern void dvmrp_print(netdissect_options *, const u_char *, u_int); +extern void eap_print(netdissect_options *, const u_char *, u_int); +extern void eapol_print(netdissect_options *, const u_char *); +extern void egp_print(netdissect_options *, const u_char *, u_int); +extern void eigrp_print(netdissect_options *, const u_char *, u_int); +extern void esp_print(netdissect_options *, const u_char *, u_int, const u_char *, u_int, int, u_int); +extern u_int ether_print(netdissect_options *, const u_char *, u_int, u_int, void (*)(netdissect_options *, const u_char *), const u_char *); +extern u_int ether_switch_tag_print(netdissect_options *, const u_char *, u_int, u_int, void (*)(netdissect_options *, const u_char *), u_int); +extern int ethertype_print(netdissect_options *, u_short, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *); +extern u_int fddi_print(netdissect_options *, const u_char *, u_int, u_int); +extern void forces_print(netdissect_options *, const u_char *, u_int); +extern u_int fr_print(netdissect_options *, const u_char *, u_int); +extern int frag6_print(netdissect_options *, const u_char *, const u_char *); +extern void ftp_print(netdissect_options *, const u_char *, u_int); +extern void geneve_print(netdissect_options *, const u_char *, u_int); +extern void geonet_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *); +extern void gre_print(netdissect_options *, const u_char *, u_int); +extern int hbhopt_process(netdissect_options *, const u_char *, int *, uint32_t *); +extern void hex_and_ascii_print(netdissect_options *, const char *, const u_char *, u_int); +extern void hex_print(netdissect_options *, const char *ident, const u_char *cp, u_int); +extern void hex_print_with_offset(netdissect_options *, const char *ident, const u_char *cp, u_int, u_int); +extern void hncp_print(netdissect_options *, const u_char *, u_int); +extern void hsrp_print(netdissect_options *, const u_char *, u_int); +extern void http_print(netdissect_options *, const u_char *, u_int); +extern void icmp6_print(netdissect_options *, const u_char *, u_int, const u_char *, int); +extern void icmp_print(netdissect_options *, const u_char *, u_int, const u_char *, int); +extern u_int ieee802_15_4_print(netdissect_options *, const u_char *, u_int); +extern u_int ieee802_11_radio_print(netdissect_options *, const u_char *, u_int, u_int); +extern void igmp_print(netdissect_options *, const u_char *, u_int); +extern void igrp_print(netdissect_options *, const u_char *, u_int); +extern void ip6_print(netdissect_options *, const u_char *, u_int); +extern void ipN_print(netdissect_options *, const u_char *, u_int); +extern void ip_print(netdissect_options *, const u_char *, u_int); +extern void ipcomp_print(netdissect_options *, const u_char *); +extern void ipx_netbios_print(netdissect_options *, const u_char *, u_int); +extern void ipx_print(netdissect_options *, const u_char *, u_int); +extern void isakmp_print(netdissect_options *, const u_char *, u_int, const u_char *); +extern void isakmp_rfc3948_print(netdissect_options *, const u_char *, u_int, const u_char *, int, int, u_int); +extern void isoclns_print(netdissect_options *, const u_char *, u_int); +extern void krb_print(netdissect_options *, const u_char *); +extern void l2tp_print(netdissect_options *, const u_char *, u_int); +extern void lane_print(netdissect_options *, const u_char *, u_int, u_int); +extern void ldp_print(netdissect_options *, const u_char *, u_int); +extern void lisp_print(netdissect_options *, const u_char *, u_int); +extern u_int llap_print(netdissect_options *, const u_char *, u_int); +extern int llc_print(netdissect_options *, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *); +extern void lldp_print(netdissect_options *, const u_char *, u_int); +extern void lmp_print(netdissect_options *, const u_char *, u_int); +extern void loopback_print(netdissect_options *, const u_char *, u_int); +extern void lspping_print(netdissect_options *, const u_char *, u_int); +extern void lwapp_control_print(netdissect_options *, const u_char *, u_int, int); +extern void lwapp_data_print(netdissect_options *, const u_char *, u_int); +extern void lwres_print(netdissect_options *, const u_char *, u_int); +extern void m3ua_print(netdissect_options *, const u_char *, const u_int); +extern int macsec_print(netdissect_options *, const u_char **, + u_int *, u_int *, u_int *, const struct lladdr_info *, + const struct lladdr_info *); +extern u_int mfr_print(netdissect_options *, const u_char *, u_int); +extern void mobile_print(netdissect_options *, const u_char *, u_int); +extern int mobility_print(netdissect_options *, const u_char *, const u_char *); +extern void mpcp_print(netdissect_options *, const u_char *, u_int); +extern void mpls_print(netdissect_options *, const u_char *, u_int); +extern int mptcp_print(netdissect_options *, const u_char *, u_int, u_char); +extern void msdp_print(netdissect_options *, const u_char *, u_int); +extern void msnlb_print(netdissect_options *, const u_char *); +extern void nbt_tcp_print(netdissect_options *, const u_char *, u_int); +extern void nbt_udp137_print(netdissect_options *, const u_char *, u_int); +extern void nbt_udp138_print(netdissect_options *, const u_char *, u_int); +extern void netbeui_print(netdissect_options *, u_short, const u_char *, u_int); +extern void nfsreply_print(netdissect_options *, const u_char *, u_int, const u_char *); +extern void nfsreply_noaddr_print(netdissect_options *, const u_char *, u_int, const u_char *); +extern void nfsreq_noaddr_print(netdissect_options *, const u_char *, u_int, const u_char *); +extern const u_char *fqdn_print(netdissect_options *, const u_char *, const u_char *); +extern void domain_print(netdissect_options *, const u_char *, u_int, int, int); +extern void nsh_print(netdissect_options *, const u_char *, u_int); +extern void ntp_print(netdissect_options *, const u_char *, u_int); +extern void oam_print(netdissect_options *, const u_char *, u_int, u_int); +extern void olsr_print(netdissect_options *, const u_char *, u_int, int); +extern void openflow_print(netdissect_options *, const u_char *, u_int); +extern void ospf6_print(netdissect_options *, const u_char *, u_int); +extern void ospf_print(netdissect_options *, const u_char *, u_int, const u_char *); +extern int ospf_grace_lsa_print(netdissect_options *, const u_char *, u_int); +extern int ospf_te_lsa_print(netdissect_options *, const u_char *, u_int); +extern void otv_print(netdissect_options *, const u_char *, u_int); +extern void pgm_print(netdissect_options *, const u_char *, u_int, const u_char *); +extern void pim_print(netdissect_options *, const u_char *, u_int, const u_char *); +extern void pimv1_print(netdissect_options *, const u_char *, u_int); +extern u_int ppp_print(netdissect_options *, const u_char *, u_int); +extern u_int pppoe_print(netdissect_options *, const u_char *, u_int); +extern void pptp_print(netdissect_options *, const u_char *); +extern void ptp_print(netdissect_options *, const u_char *, u_int); +extern int print_unknown_data(netdissect_options *, const u_char *, const char *, u_int); +extern const char *q922_string(netdissect_options *, const u_char *, u_int); +extern void q933_print(netdissect_options *, const u_char *, u_int); +extern void radius_print(netdissect_options *, const u_char *, u_int); +extern void resp_print(netdissect_options *, const u_char *, u_int); +extern void rip_print(netdissect_options *, const u_char *, u_int); +extern void ripng_print(netdissect_options *, const u_char *, unsigned int); +extern void rpki_rtr_print(netdissect_options *, const u_char *, u_int); +extern void rsvp_print(netdissect_options *, const u_char *, u_int); +extern int rt6_print(netdissect_options *, const u_char *, const u_char *); +extern void rtl_print(netdissect_options *, const u_char *, u_int, const struct lladdr_info *, const struct lladdr_info *); +extern void rtsp_print(netdissect_options *, const u_char *, u_int); +extern void rx_print(netdissect_options *, const u_char *, u_int, uint16_t, uint16_t, const u_char *); +extern void sctp_print(netdissect_options *, const u_char *, const u_char *, u_int); +extern void sflow_print(netdissect_options *, const u_char *, u_int); +extern void ssh_print(netdissect_options *, const u_char *, u_int); +extern void sip_print(netdissect_options *, const u_char *, u_int); +extern void slow_print(netdissect_options *, const u_char *, u_int); +extern void smb_tcp_print(netdissect_options *, const u_char *, u_int); +extern void smtp_print(netdissect_options *, const u_char *, u_int); +extern int snap_print(netdissect_options *, const u_char *, u_int, u_int, const struct lladdr_info *, const struct lladdr_info *, u_int); +extern void snmp_print(netdissect_options *, const u_char *, u_int); +extern void stp_print(netdissect_options *, const u_char *, u_int); +extern void sunrpc_print(netdissect_options *, const u_char *, u_int, const u_char *); +extern void syslog_print(netdissect_options *, const u_char *, u_int); +extern void tcp_print(netdissect_options *, const u_char *, u_int, const u_char *, int); +extern void telnet_print(netdissect_options *, const u_char *, u_int); +extern void tftp_print(netdissect_options *, const u_char *, u_int); +extern void timed_print(netdissect_options *, const u_char *); +extern void tipc_print(netdissect_options *, const u_char *, u_int, u_int); +extern u_int token_print(netdissect_options *, const u_char *, u_int, u_int); +extern void udld_print(netdissect_options *, const u_char *, u_int); +extern void udp_print(netdissect_options *, const u_char *, u_int, const u_char *, int, u_int); +extern int vjc_print(netdissect_options *, const u_char *, u_short); +extern void vqp_print(netdissect_options *, const u_char *, u_int); +extern void vrrp_print(netdissect_options *, const u_char *, u_int, const u_char *, int, int); +extern void vtp_print(netdissect_options *, const u_char *, const u_int); +extern void vxlan_gpe_print(netdissect_options *, const u_char *, u_int); +extern void vxlan_print(netdissect_options *, const u_char *, u_int); +extern void wb_print(netdissect_options *, const u_char *, u_int); +extern void whois_print(netdissect_options *, const u_char *, u_int); +extern void zep_print(netdissect_options *, const u_char *, u_int); +extern void zephyr_print(netdissect_options *, const u_char *, u_int); +extern void zmtp1_print(netdissect_options *, const u_char *, u_int); +extern void zmtp1_datagram_print(netdissect_options *, const u_char *, const u_int); +extern void someip_print(netdissect_options *, const u_char *, const u_int); + +/* checksum routines */ +extern void init_checksum(void); +extern uint16_t verify_crc10_cksum(uint16_t, const u_char *, int); +extern uint16_t create_osi_cksum(const uint8_t *, int, int); + +struct cksum_vec { + const uint8_t *ptr; + int len; +}; +extern uint16_t in_cksum(const struct cksum_vec *, int); +extern uint16_t in_cksum_shouldbe(uint16_t, uint16_t); + +/* IP protocol demuxing routines */ +extern void ip_demux_print(netdissect_options *, const u_char *, u_int, u_int, int, u_int, uint8_t, const u_char *); + +extern uint16_t nextproto4_cksum(netdissect_options *, const struct ip *, const uint8_t *, u_int, u_int, uint8_t); + +/* in print-ip6.c */ +extern uint16_t nextproto6_cksum(netdissect_options *, const struct ip6_hdr *, const uint8_t *, u_int, u_int, uint8_t); + +/* Utilities */ +extern void nd_print_trunc(netdissect_options *); +extern void nd_print_protocol(netdissect_options *); +extern void nd_print_protocol_caps(netdissect_options *); +extern void nd_print_invalid(netdissect_options *); + +extern int mask2plen(uint32_t); +extern int mask62plen(const u_char *); + +extern const char *dnnum_string(netdissect_options *, u_short); + +extern int decode_prefix4(netdissect_options *, const u_char *, u_int, char *, size_t); +extern int decode_prefix6(netdissect_options *, const u_char *, u_int, char *, size_t); + +extern void esp_decodesecret_print(netdissect_options *); +extern int esp_decrypt_buffer_by_ikev2_print(netdissect_options *, int, + const u_char spii[8], + const u_char spir[8], + const u_char *, const u_char *); + +#endif /* netdissect_h */ |