Merge TinyOS 2.1.1 into master.

[tinyos-2.x.git] / support / sdk / c / blip / driver / radvd-1.0 / util.c

diff --git a/support/sdk/c/blip/driver/radvd-1.0/util.c b/support/sdk/c/blip/driver/radvd-1.0/util.c
new file mode 100644 (file)
index 0000000..70029df
--- /dev/null
+++ b/support/sdk/c/blip/driver/radvd-1.0/util.c
@@ -0,0 +1,65 @@
+/*
+ *   $Id$
+ *
+ *   Authors:
+ *    Lars Fenneberg           <lf@elemental.net>       
+ *
+ *   This software is Copyright 1996,1997 by the above mentioned author(s), 
+ *   All Rights Reserved.
+ *
+ *   The license which is distributed with this software in the file COPYRIGHT
+ *   applies to this software. If your distribution is missing this file, you
+ *   may request it from <pekkas@netcore.fi>.
+ *
+ */
+
+#include "config.h"
+#include "includes.h"
+#include "radvd.h"
+               
+void
+mdelay(double msecs)
+{
+       struct timeval tv;
+                
+       tv.tv_sec = (time_t)(msecs / 1000.0);
+       tv.tv_usec = (suseconds_t)((msecs - tv.tv_sec * 1000.0) * 1000.0);
+
+       select(0,(fd_set *)NULL,(fd_set *)NULL,(fd_set *)NULL, &tv);
+}
+
+double
+rand_between(double lower, double upper)
+{
+       return ((upper - lower) / (RAND_MAX + 1.0) * rand() + lower);
+}
+
+void
+print_addr(struct in6_addr *addr, char *str)
+{
+       const char *res;
+
+       /* XXX: overflows 'str' if it isn't big enough */
+       res = inet_ntop(AF_INET6, (void *)addr, str, INET6_ADDRSTRLEN);
+       
+       if (res == NULL) 
+       {
+               flog(LOG_ERR, "print_addr: inet_ntop: %s", strerror(errno));            
+               strcpy(str, "[invalid address]");       
+       }
+}
+
+/* Check if an in6_addr exists in the rdnss list */
+int
+check_rdnss_presence(struct AdvRDNSS *rdnss, struct in6_addr *addr)
+{
+       while (rdnss) {
+               if (    !memcmp(&rdnss->AdvRDNSSAddr1, addr, sizeof(struct in6_addr)) 
+                    || !memcmp(&rdnss->AdvRDNSSAddr2, addr, sizeof(struct in6_addr))
+                    || !memcmp(&rdnss->AdvRDNSSAddr3, addr, sizeof(struct in6_addr)) )
+                       break; /* rdnss address found in the list */
+               else
+                       rdnss = rdnss->next; /* no match */
+       }
+       return (rdnss != NULL);
+}