diff options
Diffstat (limited to 'libs/libsodium/src/sodium/core.c')
-rw-r--r-- | libs/libsodium/src/sodium/core.c | 430 |
1 files changed, 214 insertions, 216 deletions
diff --git a/libs/libsodium/src/sodium/core.c b/libs/libsodium/src/sodium/core.c index 2241a2ea5b..bdd6a0f1ac 100644 --- a/libs/libsodium/src/sodium/core.c +++ b/libs/libsodium/src/sodium/core.c @@ -1,216 +1,214 @@ - -#include <assert.h> -#include <stdlib.h> -#include <string.h> -#include <time.h> -#ifdef _WIN32 -# include <windows.h> -#elif defined(HAVE_PTHREAD) -# include <pthread.h> -#endif - -#include "core.h" -#include "crypto_generichash.h" -#include "crypto_onetimeauth.h" -#include "crypto_scalarmult.h" -#include "crypto_stream_chacha20.h" -#include "crypto_stream_salsa20.h" -#include "randombytes.h" -#include "runtime.h" -#include "utils.h" -#include "private/implementations.h" -#include "private/mutex.h" - -static volatile int initialized; -static volatile int locked; - -int -sodium_init(void) -{ - if (sodium_crit_enter() != 0) { - return -1; /* LCOV_EXCL_LINE */ - } - if (initialized != 0) { - if (sodium_crit_leave() != 0) { - return -1; /* LCOV_EXCL_LINE */ - } - return 1; - } - _sodium_runtime_get_cpu_features(); - randombytes_stir(); - _sodium_alloc_init(); - _crypto_pwhash_argon2_pick_best_implementation(); - _crypto_generichash_blake2b_pick_best_implementation(); - _crypto_onetimeauth_poly1305_pick_best_implementation(); - _crypto_scalarmult_curve25519_pick_best_implementation(); - _crypto_stream_chacha20_pick_best_implementation(); - _crypto_stream_salsa20_pick_best_implementation(); - initialized = 1; - if (sodium_crit_leave() != 0) { - return -1; /* LCOV_EXCL_LINE */ - } - return 0; -} - -#ifdef _WIN32 - -static CRITICAL_SECTION _sodium_lock; -static volatile LONG _sodium_lock_initialized; - -int -_sodium_crit_init(void) -{ - LONG status = 0L; - - while ((status = InterlockedCompareExchange(&_sodium_lock_initialized, - 1L, 0L)) == 1L) { - Sleep(0); - } - - switch (status) { - case 0L: - InitializeCriticalSection(&_sodium_lock); - return InterlockedExchange(&_sodium_lock_initialized, 2L) == 1L ? 0 : -1; - case 2L: - return 0; - default: /* should never be reached */ - return -1; - } -} - -int -sodium_crit_enter(void) -{ - if (_sodium_crit_init() != 0) { - return -1; /* LCOV_EXCL_LINE */ - } - EnterCriticalSection(&_sodium_lock); - assert(locked == 0); - locked = 1; - - return 0; -} - -int -sodium_crit_leave(void) -{ - if (locked == 0) { -# ifdef EPERM - errno = EPERM; -# endif - return -1; - } - locked = 0; - LeaveCriticalSection(&_sodium_lock); - - return 0; -} - -#elif defined(HAVE_PTHREAD) && !defined(__EMSCRIPTEN__) - -static pthread_mutex_t _sodium_lock = PTHREAD_MUTEX_INITIALIZER; - -int -sodium_crit_enter(void) -{ - int ret; - - if ((ret = pthread_mutex_lock(&_sodium_lock)) == 0) { - assert(locked == 0); - locked = 1; - } - return ret; -} - -int -sodium_crit_leave(void) -{ - int ret; - - if (locked == 0) { -# ifdef EPERM - errno = EPERM; -# endif - return -1; - } - locked = 0; - - return pthread_mutex_unlock(&_sodium_lock); -} - -#elif defined(HAVE_ATOMIC_OPS) && !defined(__EMSCRIPTEN__) && !defined(__native_client__) - -static volatile int _sodium_lock; - -int -sodium_crit_enter(void) -{ -# ifdef HAVE_NANOSLEEP - struct timespec q; - memset(&q, 0, sizeof q); -# endif - while (__sync_lock_test_and_set(&_sodium_lock, 1) != 0) { -# ifdef HAVE_NANOSLEEP - (void) nanosleep(&q, NULL); -# elif defined(__x86_64__) || defined(__i386__) - __asm__ __volatile__ ("pause"); -# endif - } - return 0; -} - -int -sodium_crit_leave(void) -{ - __sync_lock_release(&_sodium_lock); - - return 0; -} - -#else - -int -sodium_crit_enter(void) -{ - return 0; -} - -int -sodium_crit_leave(void) -{ - return 0; -} - -#endif - -static void (*_misuse_handler)(void); - -void -sodium_misuse(void) -{ - void (*handler)(void); - - (void) sodium_crit_leave(); - if (sodium_crit_enter() == 0) { - handler = _misuse_handler; - if (handler != NULL) { - handler(); - } - } -/* LCOV_EXCL_START */ - abort(); -} -/* LCOV_EXCL_STOP */ - -int -sodium_set_misuse_handler(void (*handler)(void)) -{ - if (sodium_crit_enter() != 0) { - return -1; /* LCOV_EXCL_LINE */ - } - _misuse_handler = handler; - if (sodium_crit_leave() != 0) { - return -1; /* LCOV_EXCL_LINE */ - } - return 0; -} +
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#ifdef _WIN32
+# include <windows.h>
+#elif defined(HAVE_PTHREAD)
+# include <pthread.h>
+#endif
+
+#include "core.h"
+#include "crypto_generichash.h"
+#include "crypto_onetimeauth.h"
+#include "crypto_scalarmult.h"
+#include "crypto_stream_chacha20.h"
+#include "crypto_stream_salsa20.h"
+#include "randombytes.h"
+#include "runtime.h"
+#include "utils.h"
+#include "private/implementations.h"
+#include "private/mutex.h"
+
+static volatile int initialized;
+static volatile int locked;
+
+int
+sodium_init(void)
+{
+ if (sodium_crit_enter() != 0) {
+ return -1; /* LCOV_EXCL_LINE */
+ }
+ if (initialized != 0) {
+ if (sodium_crit_leave() != 0) {
+ return -1; /* LCOV_EXCL_LINE */
+ }
+ return 1;
+ }
+ _sodium_runtime_get_cpu_features();
+ randombytes_stir();
+ _sodium_alloc_init();
+ _crypto_pwhash_argon2_pick_best_implementation();
+ _crypto_generichash_blake2b_pick_best_implementation();
+ _crypto_onetimeauth_poly1305_pick_best_implementation();
+ _crypto_scalarmult_curve25519_pick_best_implementation();
+ _crypto_stream_chacha20_pick_best_implementation();
+ _crypto_stream_salsa20_pick_best_implementation();
+ initialized = 1;
+ if (sodium_crit_leave() != 0) {
+ return -1; /* LCOV_EXCL_LINE */
+ }
+ return 0;
+}
+
+#ifdef _WIN32
+
+static CRITICAL_SECTION _sodium_lock;
+static volatile LONG _sodium_lock_initialized;
+
+int
+_sodium_crit_init(void)
+{
+ LONG status = 0L;
+
+ while ((status = InterlockedCompareExchange(&_sodium_lock_initialized,
+ 1L, 0L)) == 1L) {
+ Sleep(0);
+ }
+
+ switch (status) {
+ case 0L:
+ InitializeCriticalSection(&_sodium_lock);
+ return InterlockedExchange(&_sodium_lock_initialized, 2L) == 1L ? 0 : -1;
+ case 2L:
+ return 0;
+ default: /* should never be reached */
+ return -1;
+ }
+}
+
+int
+sodium_crit_enter(void)
+{
+ if (_sodium_crit_init() != 0) {
+ return -1; /* LCOV_EXCL_LINE */
+ }
+ EnterCriticalSection(&_sodium_lock);
+ assert(locked == 0);
+ locked = 1;
+
+ return 0;
+}
+
+int
+sodium_crit_leave(void)
+{
+ if (locked == 0) {
+# ifdef EPERM
+ errno = EPERM;
+# endif
+ return -1;
+ }
+ locked = 0;
+ LeaveCriticalSection(&_sodium_lock);
+
+ return 0;
+}
+
+#elif defined(HAVE_PTHREAD) && !defined(__EMSCRIPTEN__)
+
+static pthread_mutex_t _sodium_lock = PTHREAD_MUTEX_INITIALIZER;
+
+int
+sodium_crit_enter(void)
+{
+ int ret;
+
+ if ((ret = pthread_mutex_lock(&_sodium_lock)) == 0) {
+ assert(locked == 0);
+ locked = 1;
+ }
+ return ret;
+}
+
+int
+sodium_crit_leave(void)
+{
+ if (locked == 0) {
+# ifdef EPERM
+ errno = EPERM;
+# endif
+ return -1;
+ }
+ locked = 0;
+
+ return pthread_mutex_unlock(&_sodium_lock);
+}
+
+#elif defined(HAVE_ATOMIC_OPS) && !defined(__EMSCRIPTEN__) && !defined(__native_client__)
+
+static volatile int _sodium_lock;
+
+int
+sodium_crit_enter(void)
+{
+# ifdef HAVE_NANOSLEEP
+ struct timespec q;
+ memset(&q, 0, sizeof q);
+# endif
+ while (__sync_lock_test_and_set(&_sodium_lock, 1) != 0) {
+# ifdef HAVE_NANOSLEEP
+ (void) nanosleep(&q, NULL);
+# elif defined(__x86_64__) || defined(__i386__)
+ __asm__ __volatile__ ("pause");
+# endif
+ }
+ return 0;
+}
+
+int
+sodium_crit_leave(void)
+{
+ __sync_lock_release(&_sodium_lock);
+
+ return 0;
+}
+
+#else
+
+int
+sodium_crit_enter(void)
+{
+ return 0;
+}
+
+int
+sodium_crit_leave(void)
+{
+ return 0;
+}
+
+#endif
+
+static void (*_misuse_handler)(void);
+
+void
+sodium_misuse(void)
+{
+ void (*handler)(void);
+
+ (void) sodium_crit_leave();
+ if (sodium_crit_enter() == 0) {
+ handler = _misuse_handler;
+ if (handler != NULL) {
+ handler();
+ }
+ }
+/* LCOV_EXCL_START */
+ abort();
+}
+/* LCOV_EXCL_STOP */
+
+int
+sodium_set_misuse_handler(void (*handler)(void))
+{
+ if (sodium_crit_enter() != 0) {
+ return -1; /* LCOV_EXCL_LINE */
+ }
+ _misuse_handler = handler;
+ if (sodium_crit_leave() != 0) {
+ return -1; /* LCOV_EXCL_LINE */
+ }
+ return 0;
+}
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