diff options
Diffstat (limited to 'src/random.cpp')
-rw-r--r-- | src/random.cpp | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/src/random.cpp b/src/random.cpp index b308e8f4a1..7e0e94439e 100644 --- a/src/random.cpp +++ b/src/random.cpp @@ -27,9 +27,12 @@ #include <sys/syscall.h> #include <linux/random.h> #endif -#ifdef HAVE_GETENTROPY +#if defined(HAVE_GETENTROPY) || (defined(HAVE_GETENTROPY_RAND) && defined(MAC_OSX)) #include <unistd.h> #endif +#if defined(HAVE_GETENTROPY_RAND) && defined(MAC_OSX) +#include <sys/random.h> +#endif #ifdef HAVE_SYSCTL_ARND #include <sys/sysctl.h> #endif @@ -43,10 +46,10 @@ #include <openssl/err.h> #include <openssl/rand.h> -static void RandFailure() +[[noreturn]] static void RandFailure() { LogPrintf("Failed to read randomness, aborting\n"); - abort(); + std::abort(); } static inline int64_t GetPerformanceCounter() @@ -152,7 +155,7 @@ static void RandAddSeedPerfmon() const size_t nMaxSize = 10000000; // Bail out at more than 10MB of performance data while (true) { nSize = vData.size(); - ret = RegQueryValueExA(HKEY_PERFORMANCE_DATA, "Global", NULL, NULL, vData.data(), &nSize); + ret = RegQueryValueExA(HKEY_PERFORMANCE_DATA, "Global", nullptr, nullptr, vData.data(), &nSize); if (ret != ERROR_MORE_DATA || vData.size() >= nMaxSize) break; vData.resize(std::max((vData.size() * 3) / 2, nMaxSize)); // Grow size of buffer exponentially @@ -200,7 +203,7 @@ void GetOSRand(unsigned char *ent32) { #if defined(WIN32) HCRYPTPROV hProvider; - int ret = CryptAcquireContextW(&hProvider, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT); + int ret = CryptAcquireContextW(&hProvider, nullptr, nullptr, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT); if (!ret) { RandFailure(); } @@ -237,6 +240,15 @@ void GetOSRand(unsigned char *ent32) if (getentropy(ent32, NUM_OS_RANDOM_BYTES) != 0) { RandFailure(); } +#elif defined(HAVE_GETENTROPY_RAND) && defined(MAC_OSX) + // We need a fallback for OSX < 10.12 + if (&getentropy != nullptr) { + if (getentropy(ent32, NUM_OS_RANDOM_BYTES) != 0) { + RandFailure(); + } + } else { + GetDevURandom(ent32); + } #elif defined(HAVE_SYSCTL_ARND) /* FreeBSD and similar. It is possible for the call to return less * bytes than requested, so need to read in a loop. @@ -245,7 +257,7 @@ void GetOSRand(unsigned char *ent32) int have = 0; do { size_t len = NUM_OS_RANDOM_BYTES - have; - if (sysctl(name, ARRAYLEN(name), ent32 + have, &len, NULL, 0) != 0) { + if (sysctl(name, ARRAYLEN(name), ent32 + have, &len, nullptr, 0) != 0) { RandFailure(); } have += len; |