diff options
Diffstat (limited to 'netdissect.h')
| -rw-r--r-- | netdissect.h | 75 |
1 files changed, 43 insertions, 32 deletions
diff --git a/netdissect.h b/netdissect.h index b1074ef..36efe18 100644 --- a/netdissect.h +++ b/netdissect.h @@ -30,6 +30,7 @@ #endif #include <sys/types.h> #include <setjmp.h> +#include <time.h> #include "status-exit-codes.h" #include "funcattrs.h" /* for PRINTFLIKE_FUNCPTR() */ #include "diag-control.h" /* for ND_UNREACHABLE */ @@ -58,9 +59,16 @@ 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. + * individual bytes while they're being assembled. Use + * GET_S_BE_n() and GET_S_LE_n() macros to extract the value + * as a signed integer. */ +typedef unsigned char nd_int16_t[2]; +typedef unsigned char nd_int24_t[3]; typedef unsigned char nd_int32_t[4]; +typedef unsigned char nd_int40_t[5]; +typedef unsigned char nd_int48_t[6]; +typedef unsigned char nd_int56_t[7]; typedef unsigned char nd_int64_t[8]; #define FMAXINT (4294967296.0) /* floating point rep. of MAXINT */ @@ -268,19 +276,10 @@ 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 */ -} +/* + * Report a packet truncation with a longjmp(). + */ +NORETURN void nd_trunc_longjmp(netdissect_options *ndo); #define PT_VAT 1 /* Visual Audio Tool */ #define PT_WB 2 /* distributed White Board */ @@ -386,35 +385,47 @@ nd_trunc_longjmp(netdissect_options *ndo) /* * Number of bytes between two pointers. */ -#define ND_BYTES_BETWEEN(p1, p2) ((u_int)(((const uint8_t *)(p1)) - (const uint8_t *)(p2))) +#define ND_BYTES_BETWEEN(p1, p2) ((const u_char *)(p1) >= (const u_char *)(p2) ? 0 : ((u_int)(((const u_char *)(p2)) - (const u_char *)(p1)))) /* * 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)) +#define ND_BYTES_AVAILABLE_AFTER(p) ((const u_char *)(p) < ndo->ndo_packetp ? 0 : ND_BYTES_BETWEEN((p), ndo->ndo_snapend)) -/* 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)); \ +/* + * Check (expression_1 operator expression_2) for invalid packet with + * a custom message, format %u + */ +#define ND_ICHECKMSG_U(message, expression_1, operator, expression_2) \ +if ((expression_1) operator (expression_2)) { \ +ND_PRINT(" [%s %u %s %u]", (message), (expression_1), (#operator), (expression_2)); \ 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 (expression_1 operator expression_2) for invalid packet with + * "expression_1" message, format %u + */ +#define ND_ICHECK_U(expression_1, operator, expression_2) \ +ND_ICHECKMSG_U((#expression_1), (expression_1), operator, (expression_2)) -/* 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)); \ +/* + * Check (expression_1 operator expression_2) for invalid packet with + * a custom message, format %zu + */ +#define ND_ICHECKMSG_ZU(message, expression_1, operator, expression_2) \ +if ((expression_1) operator (expression_2)) { \ +ND_PRINT(" [%s %u %s %zu]", (message), (expression_1), (#operator), (expression_2)); \ 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)) +/* + * Check (expression_1 operator expression_2) for invalid packet with + * "expression_1" message, format %zu + */ +#define ND_ICHECK_ZU(expression_1, operator, expression_2) \ +ND_ICHECKMSG_ZU((#expression_1), (expression_1), operator, (expression_2)) #define ND_PRINT(...) (ndo->ndo_printf)(ndo, __VA_ARGS__) #define ND_DEFAULTPRINT(ap, length) (*ndo->ndo_default_print)(ndo, ap, length) @@ -430,6 +441,7 @@ 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_printjn(netdissect_options *, const u_char *, u_int); extern void nd_printjnp(netdissect_options *, const u_char *, u_int); /* @@ -645,7 +657,7 @@ 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 ip_print(netdissect_options *, const u_char *, const 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); @@ -752,7 +764,6 @@ extern void zmtp1_datagram_print(netdissect_options *, const u_char *, const u_i 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); |