1 files changed, 88 insertions, 0 deletions
diff --git a/src/_cffi_src/openssl/src/osrandom_engine.h b/src/_cffi_src/openssl/src/osrandom_engine.h
new file mode 100644
index 00000000..d28ebf39
--- /dev/null
+++ b/src/_cffi_src/openssl/src/osrandom_engine.h
@@ -0,0 +1,88 @@
+#ifdef _WIN32
+  #include <Wincrypt.h>
+#else
+  #include <fcntl.h>
+  #include <unistd.h>
+   /* for defined(BSD) */
+  #include <sys/param.h>
+
+  #ifdef BSD
+    /* for SYS_getentropy */
+    #include <sys/syscall.h>
+  #endif
+
+  #ifdef __APPLE__
+    #include <sys/random.h>
+  #endif
+
+  #ifdef __linux__
+    /* for SYS_getrandom */
+    #include <sys/syscall.h>
+    #ifndef GRND_NONBLOCK
+      #define GRND_NONBLOCK 0x0001
+    #endif /* GRND_NONBLOCK */
+  #endif /* __linux__ */
+#endif /* _WIN32 */
+
+#define CRYPTOGRAPHY_OSRANDOM_ENGINE_CRYPTGENRANDOM 1
+#define CRYPTOGRAPHY_OSRANDOM_ENGINE_GETENTROPY 2
+#define CRYPTOGRAPHY_OSRANDOM_ENGINE_GETRANDOM 3
+#define CRYPTOGRAPHY_OSRANDOM_ENGINE_DEV_URANDOM 4
+
+#ifndef CRYPTOGRAPHY_OSRANDOM_ENGINE
+  #if defined(_WIN32)
+    /* Windows */
+    #define CRYPTOGRAPHY_OSRANDOM_ENGINE CRYPTOGRAPHY_OSRANDOM_ENGINE_CRYPTGENRANDOM
+  #elif defined(BSD) && defined(SYS_getentropy)
+    /* OpenBSD 5.6+ or macOS 10.12+ */
+    #define CRYPTOGRAPHY_OSRANDOM_ENGINE CRYPTOGRAPHY_OSRANDOM_ENGINE_GETENTROPY
+  #elif defined(__linux__) && defined(SYS_getrandom)
+    /* Linux 3.4.17+ */
+    #define CRYPTOGRAPHY_OSRANDOM_ENGINE CRYPTOGRAPHY_OSRANDOM_ENGINE_GETRANDOM
+  #else
+    /* Keep this as last entry, fall back to /dev/urandom */
+    #define CRYPTOGRAPHY_OSRANDOM_ENGINE CRYPTOGRAPHY_OSRANDOM_ENGINE_DEV_URANDOM
+  #endif
+#endif /* CRYPTOGRAPHY_OSRANDOM_ENGINE */
+
+/* Fallbacks need /dev/urandom helper functions. */
+#if CRYPTOGRAPHY_OSRANDOM_ENGINE == CRYPTOGRAPHY_OSRANDOM_ENGINE_GETRANDOM || \
+     CRYPTOGRAPHY_OSRANDOM_ENGINE == CRYPTOGRAPHY_OSRANDOM_ENGINE_DEV_URANDOM
+  #define CRYPTOGRAPHY_OSRANDOM_NEEDS_DEV_URANDOM 1
+#endif
+
+enum {
+    CRYPTOGRAPHY_OSRANDOM_GETRANDOM_INIT_FAILED = -2,
+    CRYPTOGRAPHY_OSRANDOM_GETRANDOM_NOT_INIT,
+    CRYPTOGRAPHY_OSRANDOM_GETRANDOM_FALLBACK,
+    CRYPTOGRAPHY_OSRANDOM_GETRANDOM_WORKS
+};
+
+/* engine ctrl */
+#define CRYPTOGRAPHY_OSRANDOM_GET_IMPLEMENTATION ENGINE_CMD_BASE
+
+/* error reporting */
+static void ERR_load_Cryptography_OSRandom_strings(void);
+static void ERR_Cryptography_OSRandom_error(int function, int reason,
+                                            char *file, int line);
+
+#define CRYPTOGRAPHY_OSRANDOM_F_INIT 100
+#define CRYPTOGRAPHY_OSRANDOM_F_RAND_BYTES 101
+#define CRYPTOGRAPHY_OSRANDOM_F_FINISH 102
+#define CRYPTOGRAPHY_OSRANDOM_F_DEV_URANDOM_FD 300
+#define CRYPTOGRAPHY_OSRANDOM_F_DEV_URANDOM_READ 301
+
+#define CRYPTOGRAPHY_OSRANDOM_R_CRYPTACQUIRECONTEXT 100
+#define CRYPTOGRAPHY_OSRANDOM_R_CRYPTGENRANDOM 101
+#define CRYPTOGRAPHY_OSRANDOM_R_CRYPTRELEASECONTEXT 102
+
+#define CRYPTOGRAPHY_OSRANDOM_R_GETENTROPY_FAILED 200
+
+#define CRYPTOGRAPHY_OSRANDOM_R_DEV_URANDOM_OPEN_FAILED 300
+#define CRYPTOGRAPHY_OSRANDOM_R_DEV_URANDOM_READ_FAILED 301
+
+#define CRYPTOGRAPHY_OSRANDOM_R_GETRANDOM_INIT_FAILED 400
+#define CRYPTOGRAPHY_OSRANDOM_R_GETRANDOM_INIT_FAILED_EAGAIN 401
+#define CRYPTOGRAPHY_OSRANDOM_R_GETRANDOM_INIT_FAILED_UNEXPECTED 402
+#define CRYPTOGRAPHY_OSRANDOM_R_GETRANDOM_FAILED 403
+#define CRYPTOGRAPHY_OSRANDOM_R_GETRANDOM_NOT_INIT 404