Moved get_random to own file

Makefile

@@ -71,6 +71,7 @@ LIB_SOURCES =	src/libhttp.c						\
 		src/httplib_get_cookie.c				\
 		src/httplib_get_first_ssl_listener_index.c		\
 		src/httplib_get_mime_type.c				\
+		src/httplib_get_random.c				\
 		src/httplib_get_rel_url_at_current_server.c		\
 		src/httplib_get_remote_ip.c				\
 		src/httplib_get_request_handler.c			\

src/httplib_get_random.c

@@ -0,0 +1,61 @@
+/* 
+ * Copyright (c) 2016 Lammert Bies
+ * Copyright (c) 2013-2016 the Civetweb developers
+ * Copyright (c) 2004-2013 Sergey Lyubka
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+
+#include "libhttp-private.h"
+
+
+
+/* Get a random number (independent of C rand function) */
+uint64_t XX_httplib_get_random( void ) {
+
+	static uint64_t lfsr = 0; /* Linear feedback shift register */
+	static uint64_t lcg = 0;  /* Linear congruential generator */
+	struct timespec now;
+
+	memset(&now, 0, sizeof(now));
+	clock_gettime(CLOCK_MONOTONIC, &now);
+
+	if (lfsr == 0) {
+		/* lfsr will be only 0 if has not been initialized,
+		 * so this code is called only once. */
+		lfsr = (((uint64_t)now.tv_sec) << 21) ^ ((uint64_t)now.tv_nsec)
+		       ^ ((uint64_t)(ptrdiff_t)&now) ^ (((uint64_t)time(NULL)) << 33);
+		lcg = (((uint64_t)now.tv_sec) << 25) + (uint64_t)now.tv_nsec
+		      + (uint64_t)(ptrdiff_t)&now;
+	} else {
+		/* Get the next step of both random number generators. */
+		lfsr = (lfsr >> 1)
+		       | ((((lfsr >> 0) ^ (lfsr >> 1) ^ (lfsr >> 3) ^ (lfsr >> 4)) & 1)
+		          << 63);
+		lcg = lcg * 6364136223846793005 + 1442695040888963407;
+	}
+
+	/* Combining two pseudo-random number generators and a high resolution part
+	 * of the current server time will make it hard (impossible?) to guess the
+	 * next number. */
+	return (lfsr ^ lcg ^ (uint64_t)now.tv_nsec);
+
+}  /* XX_httplib_get_random */

src/libhttp.c

@@ -2551,37 +2551,3 @@ int XX_httplib_set_non_blocking_mode( SOCKET sock ) {
 }  /* XX_httplib_set_non_blocking_mode */
 
 #endif /* _WIN32 */
-/* End of initial operating system specific define block. */
-
-
-/* Get a random number (independent of C rand function) */
-uint64_t XX_httplib_get_random( void ) {
-
-	static uint64_t lfsr = 0; /* Linear feedback shift register */
-	static uint64_t lcg = 0;  /* Linear congruential generator */
-	struct timespec now;
-
-	memset(&now, 0, sizeof(now));
-	clock_gettime(CLOCK_MONOTONIC, &now);
-
-	if (lfsr == 0) {
-		/* lfsr will be only 0 if has not been initialized,
-		 * so this code is called only once. */
-		lfsr = (((uint64_t)now.tv_sec) << 21) ^ ((uint64_t)now.tv_nsec)
-		       ^ ((uint64_t)(ptrdiff_t)&now) ^ (((uint64_t)time(NULL)) << 33);
-		lcg = (((uint64_t)now.tv_sec) << 25) + (uint64_t)now.tv_nsec
-		      + (uint64_t)(ptrdiff_t)&now;
-	} else {
-		/* Get the next step of both random number generators. */
-		lfsr = (lfsr >> 1)
-		       | ((((lfsr >> 0) ^ (lfsr >> 1) ^ (lfsr >> 3) ^ (lfsr >> 4)) & 1)
-		          << 63);
-		lcg = lcg * 6364136223846793005 + 1442695040888963407;
-	}
-
-	/* Combining two pseudo-random number generators and a high resolution part
-	 * of the current server time will make it hard (impossible?) to guess the
-	 * next number. */
-	return (lfsr ^ lcg ^ (uint64_t)now.tv_nsec);
-
-}  /* XX_httplib_get_random */