diff options
Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/libsodium/src/libsodium/randombytes/sysrandom/randombytes_sysrandom.c')
| -rw-r--r-- | external_libs/python/pyzmq-14.7.0/bundled/libsodium/src/libsodium/randombytes/sysrandom/randombytes_sysrandom.c | 266 |
1 files changed, 0 insertions, 266 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/libsodium/src/libsodium/randombytes/sysrandom/randombytes_sysrandom.c b/external_libs/python/pyzmq-14.7.0/bundled/libsodium/src/libsodium/randombytes/sysrandom/randombytes_sysrandom.c deleted file mode 100644 index 15b223b4..00000000 --- a/external_libs/python/pyzmq-14.7.0/bundled/libsodium/src/libsodium/randombytes/sysrandom/randombytes_sysrandom.c +++ /dev/null @@ -1,266 +0,0 @@ - -#include <sys/types.h> -#ifndef _WIN32 -# include <sys/stat.h> -# include <sys/time.h> -#endif - -#include <assert.h> -#include <errno.h> -#include <fcntl.h> -#include <limits.h> -#include <stdint.h> -#include <stdlib.h> -#include <string.h> -#ifndef _WIN32 -# include <unistd.h> -#endif - -#include "randombytes.h" -#include "randombytes_sysrandom.h" -#include "utils.h" - -#ifdef _WIN32 -# include <windows.h> -# define RtlGenRandom SystemFunction036 -# if defined(__cplusplus) -extern "C" -# endif -BOOLEAN NTAPI RtlGenRandom(PVOID RandomBuffer, ULONG RandomBufferLength); -# pragma comment(lib, "advapi32.lib") -#endif - -#ifdef __OpenBSD__ - -uint32_t -randombytes_sysrandom(void) -{ - return arc4random(); -} - -void -randombytes_sysrandom_stir(void) -{ -} - -uint32_t -randombytes_sysrandom_uniform(const uint32_t upper_bound) -{ - return arc4random_uniform(upper_bound); -} - -void -randombytes_sysrandom_buf(void * const buf, const size_t size) -{ - return arc4random_buf(buf, size); -} - -int -randombytes_sysrandom_close(void) -{ - return 0; -} - -#else /* __OpenBSD__ */ - -typedef struct SysRandom_ { - int random_data_source_fd; - int initialized; -} SysRandom; - -static SysRandom stream = { - SODIUM_C99(.random_data_source_fd =) -1, - SODIUM_C99(.initialized =) 0 -}; - -#ifndef _WIN32 -static ssize_t -safe_read(const int fd, void * const buf_, size_t count) -{ - unsigned char *buf = (unsigned char *) buf_; - ssize_t readnb; - - assert(count > (size_t) 0U); - do { - while ((readnb = read(fd, buf, count)) < (ssize_t) 0 && - (errno == EINTR || errno == EAGAIN)); /* LCOV_EXCL_LINE */ - if (readnb < (ssize_t) 0) { - return readnb; /* LCOV_EXCL_LINE */ - } - if (readnb == (ssize_t) 0) { - break; /* LCOV_EXCL_LINE */ - } - count -= (size_t) readnb; - buf += readnb; - } while (count > (ssize_t) 0); - - return (ssize_t) (buf - (unsigned char *) buf_); -} -#endif - -#ifndef _WIN32 -static int -randombytes_sysrandom_random_dev_open(void) -{ -/* LCOV_EXCL_START */ - struct stat st; - static const char *devices[] = { -# ifndef USE_BLOCKING_RANDOM - "/dev/urandom", -# endif - "/dev/random", NULL - }; - const char ** device = devices; - int fd; - - do { - fd = open(*device, O_RDONLY); - if (fd != -1) { - if (fstat(fd, &st) == 0 && S_ISCHR(st.st_mode)) { -# if defined(F_SETFD) && defined(FD_CLOEXEC) - (void) fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); -# endif - return fd; - } - (void) close(fd); - } else if (errno == EINTR) { - continue; - } - device++; - } while (*device != NULL); - - errno = EIO; - return -1; -/* LCOV_EXCL_STOP */ -} - -static void -randombytes_sysrandom_init(void) -{ - const int errno_save = errno; - - if ((stream.random_data_source_fd = - randombytes_sysrandom_random_dev_open()) == -1) { - abort(); /* LCOV_EXCL_LINE */ - } - errno = errno_save; -} - -#else /* _WIN32 */ - -static void -randombytes_sysrandom_init(void) -{ -} -#endif - -void -randombytes_sysrandom_stir(void) -{ - if (stream.initialized == 0) { - randombytes_sysrandom_init(); - stream.initialized = 1; - } -} - -static void -randombytes_sysrandom_stir_if_needed(void) -{ - if (stream.initialized == 0) { - randombytes_sysrandom_stir(); - } -} - -int -randombytes_sysrandom_close(void) -{ - int ret = -1; - -#ifndef _WIN32 - if (stream.random_data_source_fd != -1 && - close(stream.random_data_source_fd) == 0) { - stream.random_data_source_fd = -1; - stream.initialized = 0; - ret = 0; - } -#else /* _WIN32 */ - if (stream.initialized != 0) { - stream.initialized = 0; - ret = 0; - } -#endif - return ret; -} - -uint32_t -randombytes_sysrandom(void) -{ - uint32_t r; - - randombytes_sysrandom_buf(&r, sizeof r); - - return r; -} - -void -randombytes_sysrandom_buf(void * const buf, const size_t size) -{ - randombytes_sysrandom_stir_if_needed(); -#ifdef ULONG_LONG_MAX - /* coverity[result_independent_of_operands] */ - assert(size <= ULONG_LONG_MAX); -#endif -#ifndef _WIN32 - if (safe_read(stream.random_data_source_fd, buf, size) != (ssize_t) size) { - abort(); /* LCOV_EXCL_LINE */ - } -#else - if (size > (size_t) 0xffffffff) { - abort(); /* LCOV_EXCL_LINE */ - } - if (! RtlGenRandom((PVOID) buf, (ULONG) size)) { - abort(); /* LCOV_EXCL_LINE */ - } -#endif -} - -/* - * randombytes_sysrandom_uniform() derives from OpenBSD's arc4random_uniform() - * Copyright (c) 2008, Damien Miller <djm@openbsd.org> - */ - -uint32_t -randombytes_sysrandom_uniform(const uint32_t upper_bound) -{ - uint32_t min; - uint32_t r; - - if (upper_bound < 2) { - return 0; - } - min = (uint32_t) (-upper_bound % upper_bound); - for (;;) { - r = randombytes_sysrandom(); - if (r >= min) { - break; - } - } /* LCOV_EXCL_LINE */ - return r % upper_bound; -} - -#endif - -const char * -randombytes_sysrandom_implementation_name(void) -{ - return "sysrandom"; -} - -struct randombytes_implementation randombytes_sysrandom_implementation = { - SODIUM_C99(.implementation_name =) randombytes_sysrandom_implementation_name, - SODIUM_C99(.random =) randombytes_sysrandom, - SODIUM_C99(.stir =) randombytes_sysrandom_stir, - SODIUM_C99(.uniform =) randombytes_sysrandom_uniform, - SODIUM_C99(.buf =) randombytes_sysrandom_buf, - SODIUM_C99(.close =) randombytes_sysrandom_close -}; |