MINOR: standard: Add str2mask6 function
This new function mirrors the str2mask() function for IPv4 addresses.
This commit is in preparation to support ARGT_MSK6.
diff --git a/src/standard.c b/src/standard.c
index 495bae5..707e2c7 100644
--- a/src/standard.c
+++ b/src/standard.c
@@ -1028,6 +1028,28 @@
return 1;
}
+/* converts <str> to a struct in6_addr containing a network mask. It can be
+ * passed in quadruplet form (ffff::ffff::) or in CIDR form (64). It returns 1
+ * if the conversion succeeds otherwise zero.
+ */
+int str2mask6(const char *str, struct in6_addr *mask)
+{
+ if (strchr(str, ':') != NULL) { /* quadruplet notation */
+ if (!inet_pton(AF_INET6, str, mask))
+ return 0;
+ }
+ else { /* mask length */
+ char *err;
+ unsigned long len = strtol(str, &err, 10);
+
+ if (!*str || (err && *err) || (unsigned)len > 128)
+ return 0;
+
+ len2mask6(len, mask);
+ }
+ return 1;
+}
+
/* convert <cidr> to struct in_addr <mask>. It returns 1 if the conversion
* succeeds otherwise zero.
*/