Move libnet/ content to top of git repo

1. Moved scripts into libnet/scripts/, moved debian/ into libnet/,
and other top-level content into libnet/.
2. Moved libnet/* up to ./

1 files changed, 104 insertions, 0 deletions

diff --git a/src/libnet_prand.c b/src/libnet_prand.c
new file mode 100644
index 0000000..d62a24c
--- /dev/null
+++ b/src/libnet_prand.c
@@ -0,0 +1,104 @@
+/*
+ *  $Id: libnet_prand.c,v 1.7 2004/01/28 19:45:00 mike Exp $
+ *
+ *  libnet
+ *  libnet_prand.c - pseudo-random number generation
+ *
+ *  Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
+ *  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+ 
+#include "common.h"
+
+int
+libnet_seed_prand(libnet_t *l)
+{
+	#if !(__WIN32__)
+    struct timeval seed;
+	#endif
+
+    if (l == NULL)
+    { 
+        return (-1);
+    } 
+
+	#if __WIN32__
+    srand((unsigned)time(NULL));
+	#else
+    if (gettimeofday(&seed, NULL) == -1)
+    {
+        snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
+                "%s(): cannot gettimeofday", __func__);
+        return (-1);
+    }
+
+    /*
+     *  More entropy then just seeding with time(2).
+     */
+    srandom((unsigned)(seed.tv_sec ^ seed.tv_usec));
+	#endif
+    return (1);
+}
+
+/* FIXME this code makes no sense. On unix we use random(), which
+ * is intended to have no security, and under win32 we use cryptographically
+ * strong entropy source? If necessary, why aren't we using /dev/random
+ * on unix? What's going on here?
+ */
+uint32_t
+libnet_get_prand(int mod)
+{
+    uint32_t n;  /* 0 to 4,294,967,295 */
+#ifndef _WIN32
+    n = random();
+#else
+	HCRYPTPROV hProv = 0;
+	CryptAcquireContext(&hProv, 
+		0, 0, PROV_RSA_FULL, 
+		CRYPT_VERIFYCONTEXT);
+	
+	CryptGenRandom(hProv, 
+		sizeof(n), (BYTE*)&n);
+	CryptReleaseContext(hProv, 0); 
+#endif
+    switch (mod)
+    {
+        case LIBNET_PR2:
+            return (n & 0x1);           /* 0 - 1 */
+        case LIBNET_PR8:
+            return (n & 0xff);          /* 0 - 255 */
+        case LIBNET_PR16:
+            return (n & 0x7fff);        /* 0 - 32767 */
+        case LIBNET_PRu16:
+            return (n & 0xffff);        /* 0 - 65535 */
+        case LIBNET_PR32:
+            return (n & 0x7fffffff);    /* 0 - 2147483647 */
+        case LIBNET_PRu32:
+            return (n);                 /* 0 - 4294967295 */
+    }
+    return (0);                         /* NOTTREACHED */
+}
+
+/* EOF */