Mercurial > dropbear
view libtomcrypt/src/headers/tomcrypt_argchk.h @ 1861:2b3a8026a6ce
Add re-exec for server
This allows ASLR to re-randomize the address
space for every connection, preventing some
vulnerabilities from being exploitable by
repeated probing.
Overhead (memory and time) is yet to be confirmed.
At present this is only enabled on Linux. Other BSD platforms
with fexecve() would probably also work though have not been tested.
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Sun, 30 Jan 2022 10:14:56 +0800 |
parents | 1ff2a1034c52 |
children |
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis * * LibTomCrypt is a library that provides various cryptographic * algorithms in a highly modular and flexible manner. * * The library is free for all purposes without any express * guarantee it works. */ /* Defines the LTC_ARGCHK macro used within the library */ /* ARGTYPE is defined in tomcrypt_cfg.h */ #if ARGTYPE == 0 #include <signal.h> /* portability macros for compiler-specific code attributes */ #ifdef __GNUC__ #define ATTRIB_NORETURN __attribute__((noreturn)) #else #define ATTRIB_NORETURN #endif /* this is the default LibTomCrypt macro */ #if defined(__clang__) || defined(__GNUC_MINOR__) #define NORETURN __attribute__ ((noreturn)) #else #define NORETURN #endif void crypt_argchk(const char *v, const char *s, int d) NORETURN; #define LTC_ARGCHK(x) do { if (!(x)) { crypt_argchk(#x, __FILE__, __LINE__); } }while(0) #define LTC_ARGCHKVD(x) do { if (!(x)) { crypt_argchk(#x, __FILE__, __LINE__); } }while(0) #elif ARGTYPE == 1 /* fatal type of error */ #define LTC_ARGCHK(x) assert((x)) #define LTC_ARGCHKVD(x) LTC_ARGCHK(x) #elif ARGTYPE == 2 #define LTC_ARGCHK(x) if (!(x)) { fprintf(stderr, "\nwarning: ARGCHK failed at %s:%d\n", __FILE__, __LINE__); } #define LTC_ARGCHKVD(x) LTC_ARGCHK(x) #elif ARGTYPE == 3 #define LTC_ARGCHK(x) #define LTC_ARGCHKVD(x) LTC_ARGCHK(x) #elif ARGTYPE == 4 #define LTC_ARGCHK(x) if (!(x)) return CRYPT_INVALID_ARG; #define LTC_ARGCHKVD(x) if (!(x)) return; #endif /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */