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libgcrypt-1.9-base
src/g10lib.h
469 строк
16 KB
Werner Koch
api: New function gcry_get_config.
21 июн 2017, 10:39
Не верифицирован
21 июн 2017, 10:39
27148e6
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/* g10lib.h - Internal definitions for libgcrypt * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2005 * 2007, 2011 Free Software Foundation, Inc. * * This file is part of Libgcrypt. * * Libgcrypt is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser general Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * Libgcrypt is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see <http://www.gnu.org/licenses/>. */ /* This header is to be used inside of libgcrypt in place of gcrypt.h. This way we can better distinguish between internal and external usage of gcrypt.h. */ #ifndef G10LIB_H #define G10LIB_H 1 #ifdef _GCRYPT_H #error gcrypt.h already included #endif #ifndef _GCRYPT_IN_LIBGCRYPT #error something is wrong with config.h #endif #include <stdio.h> #include <stdarg.h> #include "visibility.h" #include "types.h" /* Attribute handling macros. */ #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5 ) #define JNLIB_GCC_M_FUNCTION 1 #define JNLIB_GCC_A_NR __attribute__ ((noreturn)) #define JNLIB_GCC_A_PRINTF( f, a ) __attribute__ ((format (printf,f,a))) #define JNLIB_GCC_A_NR_PRINTF( f, a ) \ __attribute__ ((noreturn, format (printf,f,a))) #define GCC_ATTR_NORETURN __attribute__ ((__noreturn__)) #else #define JNLIB_GCC_A_NR #define JNLIB_GCC_A_PRINTF( f, a ) #define JNLIB_GCC_A_NR_PRINTF( f, a ) #define GCC_ATTR_NORETURN #endif #if __GNUC__ >= 3 /* According to glibc this attribute is available since 2.8 however we better play safe and use it only with gcc 3 or newer. */ #define GCC_ATTR_FORMAT_ARG(a) __attribute__ ((format_arg (a))) #else #define GCC_ATTR_FORMAT_ARG(a) #endif /* I am not sure since when the unused attribute is really supported. In any case it it only needed for gcc versions which print a warning. Thus let us require gcc >= 3.5. */ #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 5 ) #define GCC_ATTR_UNUSED __attribute__ ((unused)) #else #define GCC_ATTR_UNUSED #endif #if __GNUC__ >= 3 #define LIKELY( expr ) __builtin_expect( !!(expr), 1 ) #define UNLIKELY( expr ) __builtin_expect( !!(expr), 0 ) #else #define LIKELY( expr ) (!!(expr)) #define UNLIKELY( expr ) (!!(expr)) #endif /* Gettext macros. */ #define _(a) _gcry_gettext(a) #define N_(a) (a) /* Some handy macros */ #ifndef STR #define STR(v) #v #endif #define STR2(v) STR(v) #define DIM(v) (sizeof(v)/sizeof((v)[0])) #define DIMof(type,member) DIM(((type *)0)->member) #define my_isascii(c) (!((c) & 0x80)) /*-- src/global.c -*/ int _gcry_global_is_operational (void); gcry_err_code_t _gcry_vcontrol (enum gcry_ctl_cmds cmd, va_list arg_ptr); void _gcry_check_heap (const void *a); void _gcry_pre_syscall (void); void _gcry_post_syscall (void); int _gcry_get_debug_flag (unsigned int mask); char *_gcry_get_config (int mode, const char *what); /* Malloc functions and common wrapper macros. */ void *_gcry_malloc (size_t n) _GCRY_GCC_ATTR_MALLOC; void *_gcry_calloc (size_t n, size_t m) _GCRY_GCC_ATTR_MALLOC; void *_gcry_malloc_secure (size_t n) _GCRY_GCC_ATTR_MALLOC; void *_gcry_calloc_secure (size_t n, size_t m) _GCRY_GCC_ATTR_MALLOC; void *_gcry_realloc (void *a, size_t n); char *_gcry_strdup (const char *string) _GCRY_GCC_ATTR_MALLOC; void *_gcry_xmalloc (size_t n) _GCRY_GCC_ATTR_MALLOC; void *_gcry_xcalloc (size_t n, size_t m) _GCRY_GCC_ATTR_MALLOC; void *_gcry_xmalloc_secure (size_t n) _GCRY_GCC_ATTR_MALLOC; void *_gcry_xcalloc_secure (size_t n, size_t m) _GCRY_GCC_ATTR_MALLOC; void *_gcry_xrealloc (void *a, size_t n); char *_gcry_xstrdup (const char * a) _GCRY_GCC_ATTR_MALLOC; void _gcry_free (void *a); int _gcry_is_secure (const void *a) _GCRY_GCC_ATTR_PURE; #define xtrymalloc(a) _gcry_malloc ((a)) #define xtrycalloc(a,b) _gcry_calloc ((a),(b)) #define xtrymalloc_secure(a) _gcry_malloc_secure ((a)) #define xtrycalloc_secure(a,b) _gcry_calloc_secure ((a),(b)) #define xtryrealloc(a,b) _gcry_realloc ((a),(b)) #define xtrystrdup(a) _gcry_strdup ((a)) #define xmalloc(a) _gcry_xmalloc ((a)) #define xcalloc(a,b) _gcry_xcalloc ((a),(b)) #define xmalloc_secure(a) _gcry_xmalloc_secure ((a)) #define xcalloc_secure(a,b) _gcry_xcalloc_secure ((a),(b)) #define xrealloc(a,b) _gcry_xrealloc ((a),(b)) #define xstrdup(a) _gcry_xstrdup ((a)) #define xfree(a) _gcry_free ((a)) /*-- src/misc.c --*/ #if defined(JNLIB_GCC_M_FUNCTION) || __STDC_VERSION__ >= 199901L void _gcry_bug (const char *file, int line, const char *func) GCC_ATTR_NORETURN; void _gcry_assert_failed (const char *expr, const char *file, int line, const char *func) GCC_ATTR_NORETURN; #else void _gcry_bug (const char *file, int line); void _gcry_assert_failed (const char *expr, const char *file, int line); #endif void _gcry_divide_by_zero (void) JNLIB_GCC_A_NR; const char *_gcry_gettext (const char *key) GCC_ATTR_FORMAT_ARG(1); void _gcry_fatal_error(int rc, const char *text ) JNLIB_GCC_A_NR; void _gcry_logv (int level, const char *fmt, va_list arg_ptr) JNLIB_GCC_A_PRINTF(2,0); void _gcry_log( int level, const char *fmt, ... ) JNLIB_GCC_A_PRINTF(2,3); void _gcry_log_bug( const char *fmt, ... ) JNLIB_GCC_A_NR_PRINTF(1,2); void _gcry_log_fatal( const char *fmt, ... ) JNLIB_GCC_A_NR_PRINTF(1,2); void _gcry_log_error( const char *fmt, ... ) JNLIB_GCC_A_PRINTF(1,2); void _gcry_log_info( const char *fmt, ... ) JNLIB_GCC_A_PRINTF(1,2); void _gcry_log_debug( const char *fmt, ... ) JNLIB_GCC_A_PRINTF(1,2); void _gcry_log_printf ( const char *fmt, ... ) JNLIB_GCC_A_PRINTF(1,2); void _gcry_log_printhex (const char *text, const void *buffer, size_t length); void _gcry_log_printmpi (const char *text, gcry_mpi_t mpi); void _gcry_log_printsxp (const char *text, gcry_sexp_t sexp); void _gcry_set_log_verbosity( int level ); int _gcry_log_verbosity( int level ); #ifdef JNLIB_GCC_M_FUNCTION #define BUG() _gcry_bug( __FILE__ , __LINE__, __FUNCTION__ ) #define gcry_assert(expr) (LIKELY(expr)? (void)0 \ : _gcry_assert_failed (STR(expr), __FILE__, __LINE__, __FUNCTION__)) #elif __STDC_VERSION__ >= 199901L #define BUG() _gcry_bug( __FILE__ , __LINE__, __func__ ) #define gcry_assert(expr) (LIKELY(expr)? (void)0 \ : _gcry_assert_failed (STR(expr), __FILE__, __LINE__, __func__)) #else #define BUG() _gcry_bug( __FILE__ , __LINE__ ) #define gcry_assert(expr) (LIKELY(expr)? (void)0 \ : _gcry_assert_failed (STR(expr), __FILE__, __LINE__)) #endif #define log_bug _gcry_log_bug #define log_fatal _gcry_log_fatal #define log_error _gcry_log_error #define log_info _gcry_log_info #define log_debug _gcry_log_debug #define log_printf _gcry_log_printf #define log_printhex _gcry_log_printhex #define log_printmpi _gcry_log_printmpi #define log_printsxp _gcry_log_printsxp /* Compatibility macro. */ #define log_mpidump _gcry_log_printmpi /* Tokeninze STRING and return a malloced array. */ char **_gcry_strtokenize (const char *string, const char *delim); /*-- src/hwfeatures.c --*/ #define HWF_PADLOCK_RNG (1 << 0) #define HWF_PADLOCK_AES (1 << 1) #define HWF_PADLOCK_SHA (1 << 2) #define HWF_PADLOCK_MMUL (1 << 3) #define HWF_INTEL_CPU (1 << 4) #define HWF_INTEL_FAST_SHLD (1 << 5) #define HWF_INTEL_BMI2 (1 << 6) #define HWF_INTEL_SSSE3 (1 << 7) #define HWF_INTEL_SSE4_1 (1 << 8) #define HWF_INTEL_PCLMUL (1 << 9) #define HWF_INTEL_AESNI (1 << 10) #define HWF_INTEL_RDRAND (1 << 11) #define HWF_INTEL_AVX (1 << 12) #define HWF_INTEL_AVX2 (1 << 13) #define HWF_INTEL_FAST_VPGATHER (1 << 14) #define HWF_ARM_NEON (1 << 15) #define HWF_ARM_AES (1 << 16) #define HWF_ARM_SHA1 (1 << 17) #define HWF_ARM_SHA2 (1 << 18) #define HWF_ARM_PMULL (1 << 19) #define HWF_INTEL_RDTSC (1 << 20) gpg_err_code_t _gcry_disable_hw_feature (const char *name); void _gcry_detect_hw_features (void); unsigned int _gcry_get_hw_features (void); const char *_gcry_enum_hw_features (int idx, unsigned int *r_feature); /*-- mpi/mpiutil.c --*/ const char *_gcry_mpi_get_hw_config (void); /*-- cipher/pubkey.c --*/ /* FIXME: shouldn't this go into mpi.h? */ #ifndef mpi_powm #define mpi_powm(w,b,e,m) gcry_mpi_powm( (w), (b), (e), (m) ) #endif /*-- primegen.c --*/ gcry_err_code_t _gcry_primegen_init (void); gcry_mpi_t _gcry_generate_secret_prime (unsigned int nbits, gcry_random_level_t random_level, int (*extra_check)(void*, gcry_mpi_t), void *extra_check_arg); gcry_mpi_t _gcry_generate_public_prime (unsigned int nbits, gcry_random_level_t random_level, int (*extra_check)(void*, gcry_mpi_t), void *extra_check_arg); gcry_err_code_t _gcry_generate_elg_prime (int mode, unsigned int pbits, unsigned int qbits, gcry_mpi_t g, gcry_mpi_t *r_prime, gcry_mpi_t **factors); gcry_mpi_t _gcry_derive_x931_prime (const gcry_mpi_t xp, const gcry_mpi_t xp1, const gcry_mpi_t xp2, const gcry_mpi_t e, gcry_mpi_t *r_p1, gcry_mpi_t *r_p2); gpg_err_code_t _gcry_generate_fips186_2_prime (unsigned int pbits, unsigned int qbits, const void *seed, size_t seedlen, gcry_mpi_t *r_q, gcry_mpi_t *r_p, int *r_counter, void **r_seed, size_t *r_seedlen); gpg_err_code_t _gcry_generate_fips186_3_prime (unsigned int pbits, unsigned int qbits, const void *seed, size_t seedlen, gcry_mpi_t *r_q, gcry_mpi_t *r_p, int *r_counter, void **r_seed, size_t *r_seedlen, int *r_hashalgo); gpg_err_code_t _gcry_fips186_4_prime_check (const gcry_mpi_t x, unsigned int bits); /* Replacements of missing functions (missing-string.c). */ #ifndef HAVE_STPCPY char *stpcpy (char *a, const char *b); #endif #ifndef HAVE_STRCASECMP int strcasecmp (const char *a, const char *b) _GCRY_GCC_ATTR_PURE; #endif #include "../compat/libcompat.h" /* Macros used to rename missing functions. */ #ifndef HAVE_STRTOUL #define strtoul(a,b,c) ((unsigned long)strtol((a),(b),(c))) #endif #ifndef HAVE_MEMMOVE #define memmove(d, s, n) bcopy((s), (d), (n)) #endif #ifndef HAVE_STRICMP #define stricmp(a,b) strcasecmp( (a), (b) ) #endif #ifndef HAVE_ATEXIT #define atexit(a) (on_exit((a),0)) #endif #ifndef HAVE_RAISE #define raise(a) kill(getpid(), (a)) #endif /* Stack burning. */ #ifdef HAVE_GCC_ASM_VOLATILE_MEMORY #define __gcry_burn_stack_dummy() asm volatile ("":::"memory") #else void __gcry_burn_stack_dummy (void); #endif void __gcry_burn_stack (unsigned int bytes); #define _gcry_burn_stack(bytes) \ do { __gcry_burn_stack (bytes); \ __gcry_burn_stack_dummy (); } while(0) /* To avoid that a compiler optimizes certain memset calls away, these macros may be used instead. */ #define wipememory2(_ptr,_set,_len) do { \ volatile char *_vptr=(volatile char *)(_ptr); \ size_t _vlen=(_len); \ unsigned char _vset=(_set); \ fast_wipememory2(_vptr,_vset,_vlen); \ while(_vlen) { *_vptr=(_vset); _vptr++; _vlen--; } \ } while(0) #define wipememory(_ptr,_len) wipememory2(_ptr,0,_len) #define FASTWIPE_T u64 #define FASTWIPE_MULT (U64_C(0x0101010101010101)) /* Following architectures can handle unaligned accesses fast. */ #if defined(HAVE_GCC_ATTRIBUTE_PACKED) && \ defined(HAVE_GCC_ATTRIBUTE_ALIGNED) && \ defined(HAVE_GCC_ATTRIBUTE_MAY_ALIAS) && \ (defined(__i386__) || defined(__x86_64__) || \ defined(__powerpc__) || defined(__powerpc64__) || \ (defined(__arm__) && defined(__ARM_FEATURE_UNALIGNED)) || \ defined(__aarch64__)) #define fast_wipememory2_unaligned_head(_ptr,_set,_len) /*do nothing*/ typedef struct fast_wipememory_s { FASTWIPE_T a; } __attribute__((packed, aligned(1), may_alias)) fast_wipememory_t; #else #define fast_wipememory2_unaligned_head(_vptr,_vset,_vlen) do { \ while(UNLIKELY((size_t)(_vptr)&(sizeof(FASTWIPE_T)-1)) && _vlen) \ { *_vptr=(_vset); _vptr++; _vlen--; } \ } while(0) typedef struct fast_wipememory_s { FASTWIPE_T a; } fast_wipememory_t; #endif /* fast_wipememory2 may leave tail bytes unhandled, in which case tail bytes are handled by wipememory2. */ #define fast_wipememory2(_vptr,_vset,_vlen) do { \ FASTWIPE_T _vset_long = _vset; \ fast_wipememory2_unaligned_head(_vptr,_vset,_vlen); \ if (_vlen < sizeof(FASTWIPE_T)) \ break; \ _vset_long *= FASTWIPE_MULT; \ do { \ volatile fast_wipememory_t *_vptr_long = \ (volatile void *)_vptr; \ _vptr_long->a = _vset_long; \ _vlen -= sizeof(FASTWIPE_T); \ _vptr += sizeof(FASTWIPE_T); \ } while (_vlen >= sizeof(FASTWIPE_T)); \ } while (0) /* Digit predicates. */ #define digitp(p) (*(p) >= '0' && *(p) <= '9') #define octdigitp(p) (*(p) >= '0' && *(p) <= '7') #define alphap(a) ( (*(a) >= 'A' && *(a) <= 'Z') \ || (*(a) >= 'a' && *(a) <= 'z')) #define hexdigitp(a) (digitp (a) \ || (*(a) >= 'A' && *(a) <= 'F') \ || (*(a) >= 'a' && *(a) <= 'f')) /* Init functions. */ gcry_err_code_t _gcry_cipher_init (void); gcry_err_code_t _gcry_md_init (void); gcry_err_code_t _gcry_mac_init (void); gcry_err_code_t _gcry_pk_init (void); gcry_err_code_t _gcry_secmem_module_init (void); gcry_err_code_t _gcry_mpi_init (void); /* Memory management. */ #define GCRY_ALLOC_FLAG_SECURE (1 << 0) #define GCRY_ALLOC_FLAG_XHINT (1 << 1) /* Called from xmalloc. */ /*-- sexp.c --*/ gcry_err_code_t _gcry_sexp_vbuild (gcry_sexp_t *retsexp, size_t *erroff, const char *format, va_list arg_ptr); char *_gcry_sexp_nth_string (const gcry_sexp_t list, int number); gpg_err_code_t _gcry_sexp_vextract_param (gcry_sexp_t sexp, const char *path, const char *list, va_list arg_ptr); /*-- fips.c --*/ void _gcry_initialize_fips_mode (int force); int _gcry_fips_mode (void); #define fips_mode() _gcry_fips_mode () int _gcry_enforced_fips_mode (void); void _gcry_set_enforced_fips_mode (void); void _gcry_inactivate_fips_mode (const char *text); int _gcry_is_fips_mode_inactive (void); void _gcry_fips_signal_error (const char *srcfile, int srcline, const char *srcfunc, int is_fatal, const char *description); #ifdef JNLIB_GCC_M_FUNCTION # define fips_signal_error(a) \ _gcry_fips_signal_error (__FILE__, __LINE__, __FUNCTION__, 0, (a)) # define fips_signal_fatal_error(a) \ _gcry_fips_signal_error (__FILE__, __LINE__, __FUNCTION__, 1, (a)) #else # define fips_signal_error(a) \ _gcry_fips_signal_error (__FILE__, __LINE__, NULL, 0, (a)) # define fips_signal_fatal_error(a) \ _gcry_fips_signal_error (__FILE__, __LINE__, NULL, 1, (a)) #endif int _gcry_fips_is_operational (void); #define fips_is_operational() (_gcry_global_is_operational ()) #define fips_not_operational() (GPG_ERR_NOT_OPERATIONAL) int _gcry_fips_test_operational (void); int _gcry_fips_test_error_or_operational (void); gpg_err_code_t _gcry_fips_run_selftests (int extended); void _gcry_fips_noreturn (void); #define fips_noreturn() (_gcry_fips_noreturn ()) #endif /* G10LIB_H */