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crypto: explicitly check for byte read/write functions

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Don't depend on hard-coded platform lists
This commit is contained in:
Cory Fields 2014-06-09 15:05:28 -04:00 committed by Pieter Wuille
parent 54372482a8
commit f2647cc0e9
2 changed files with 69 additions and 17 deletions
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7
configure.ac
View file

@ -368,7 +368,12 @@ if test x$TARGET_OS = xdarwin; then
AX_CHECK_LINK_FLAG([[-Wl,-dead_strip]], [LDFLAGS="$LDFLAGS -Wl,-dead_strip"])
fi
AC_CHECK_HEADERS([stdio.h stdlib.h unistd.h strings.h sys/types.h sys/stat.h sys/select.h])
AC_CHECK_HEADERS([endian.h stdio.h stdlib.h unistd.h strings.h sys/types.h sys/stat.h sys/select.h])
AC_CHECK_DECLS([le32toh, le64toh, htole32, htole64, be32toh, be64toh, htobe32, htobe64],,,
[#if HAVE_ENDIAN_H
#include <endian.h>
#endif])
dnl Check for MSG_NOSIGNAL
AC_MSG_CHECKING(for MSG_NOSIGNAL)

79
src/crypto/common.h
View file

@ -5,42 +5,89 @@
#ifndef BITCOIN_CRYPTO_COMMON_H
#define BITCOIN_CRYPTO_COMMON_H
#if defined(HAVE_CONFIG_H)
#include "bitcoin-config.h"
#endif
#include <stdint.h>
#if defined(HAVE_ENDIAN_H)
#include <endian.h>
#endif
#ifdef WIN32
uint32_t static inline ReadLE32(const unsigned char *ptr) { return *((uint32_t*)ptr); }
uint64_t static inline ReadLE64(const unsigned char *ptr) { return *((uint64_t*)ptr); }
uint32_t static inline ReadLE32(const unsigned char *ptr) {
#if HAVE_DECL_LE32TOH == 1
return le32toh(*((uint32_t*)ptr));
#elif !defined(WORDS_BIGENDIAN)
return *((uint32_t*)ptr);
#else
return ((uint32_t)ptr[3] << 24 | (uint32_t)ptr[2] << 16 | (uint32_t)ptr[1] << 8 | (uint32_t)ptr[0]);
#endif
}
void static inline WriteLE32(unsigned char *ptr, uint32_t x) { *((uint32_t*)ptr) = x; }
void static inline WriteLE64(unsigned char *ptr, uint64_t x) { *((uint64_t*)ptr) = x; }
uint64_t static inline ReadLE64(const unsigned char *ptr) {
#if HAVE_DECL_LE64TOH == 1
return le64toh(*((uint64_t*)ptr));
#elif !defined(WORDS_BIGENDIAN)
return *((uint64_t*)ptr);
#else
return ((uint64_t)ptr[7] << 56 | (uint64_t)ptr[6] << 48 | (uint64_t)ptr[5] << 40 | (uint64_t)ptr[4] << 32 |
(uint64_t)ptr[3] << 24 | (uint64_t)ptr[2] << 16 | (uint64_t)ptr[1] << 8 | (uint64_t)ptr[0]);
#endif
}
void static inline WriteLE32(unsigned char *ptr, uint32_t x) {
#if HAVE_DECL_HTOLE32 == 1
*((uint32_t*)ptr) = htole32(x);
#elif !defined(WORDS_BIGENDIAN)
*((uint32_t*)ptr) = x;
#else
ptr[3] = x >> 24; ptr[2] = x >> 16; ptr[1] = x >> 8; ptr[0] = x;
#endif
}
void static inline WriteLE64(unsigned char *ptr, uint64_t x) {
#if HAVE_DECL_HTOLE64 == 1
*((uint64_t*)ptr) = htole64(x);
#elif !defined(WORDS_BIGENDIAN)
*((uint64_t*)ptr) = x;
#else
ptr[7] = x >> 56; ptr[6] = x >> 48; ptr[5] = x >> 40; ptr[4] = x >> 32;
ptr[3] = x >> 24; ptr[2] = x >> 16; ptr[1] = x >> 8; ptr[0] = x;
#endif
}
uint32_t static inline ReadBE32(const unsigned char *ptr) {
#if HAVE_DECL_BE32TOH == 1
return be32toh(*((uint32_t*)ptr));
#else
return ((uint32_t)ptr[0] << 24 | (uint32_t)ptr[1] << 16 | (uint32_t)ptr[2] << 8 | (uint32_t)ptr[3]);
#endif
}
uint64_t static inline ReadBE64(const unsigned char *ptr) {
#if HAVE_DECL_BE64TOH == 1
return be64toh(*((uint64_t*)ptr));
#else
return ((uint64_t)ptr[0] << 56 | (uint64_t)ptr[1] << 48 | (uint64_t)ptr[2] << 40 | (uint64_t)ptr[3] << 32 |
(uint64_t)ptr[4] << 24 | (uint64_t)ptr[5] << 16 | (uint64_t)ptr[6] << 8 | (uint64_t)ptr[7]);
#endif
}
void static inline WriteBE32(unsigned char *ptr, uint32_t x) {
#if HAVE_DECL_HTOBE32 == 1
*((uint32_t*)ptr) = htobe32(x);
#else
ptr[0] = x >> 24; ptr[1] = x >> 16; ptr[2] = x >> 8; ptr[3] = x;
#endif
}
void static inline WriteBE64(unsigned char *ptr, uint64_t x) {
#if HAVE_DECL_HTOBE64 == 1
*((uint64_t*)ptr) = htobe64(x);
#else
ptr[0] = x >> 56; ptr[1] = x >> 48; ptr[2] = x >> 40; ptr[3] = x >> 32;
ptr[4] = x >> 24; ptr[5] = x >> 16; ptr[6] = x >> 8; ptr[7] = x;
#endif
}
#else
# include <endian.h>
uint32_t static inline ReadLE32(const unsigned char *ptr) { return le32toh(*((uint32_t*)ptr)); }
uint64_t static inline ReadLE64(const unsigned char *ptr) { return le64toh(*((uint64_t*)ptr)); }
void static inline WriteLE32(unsigned char *ptr, uint32_t x) { *((uint32_t*)ptr) = htole32(x); }
void static inline WriteLE64(unsigned char *ptr, uint64_t x) { *((uint64_t*)ptr) = htole64(x); }
uint32_t static inline ReadBE32(const unsigned char *ptr) { return be32toh(*((uint32_t*)ptr)); }
uint64_t static inline ReadBE64(const unsigned char *ptr) { return be64toh(*((uint64_t*)ptr)); }
void static inline WriteBE32(unsigned char *ptr, uint32_t x) { *((uint32_t*)ptr) = htobe32(x); }
void static inline WriteBE64(unsigned char *ptr, uint64_t x) { *((uint64_t*)ptr) = htobe64(x); }
#endif
#endif