+/** Convert a CIDR mask to printable ASCII form.
+ * This is generally deprecated in favor of ircd_ntoa_masked_r().
+ * @param[in] in Address to convert.
+ * @param[in] bits Mask bits.
+ * @return Pointer to a static buffer containing the readable form.
+ */
+const char* ircd_ntoa_masked(const struct irc_in_addr* in, unsigned char bits)
+{
+ static char buf[CIDRLEN];
+ return ircd_ntoa_masked_r(buf, in, bits);
+}
+
+/** Convert a CIDR mask to printable ASCII form.
+ * @param[out] buf Output buffer to write to.
+ * @param[in] in Address to format.
+ * @param[in] bits Mask bits.
+ * @return Pointer to the output buffer \a buf.
+ */
+const char* ircd_ntoa_masked_r(char* buf, const struct irc_in_addr* in, unsigned char bits)
+{
+ char inname[SOCKIPLEN];
+ struct irc_in_addr intemp;
+ int i;
+
+ for(i=0;i<8;i++) {
+ int curbits = bits - i * 16;
+
+ if (curbits<0)
+ curbits = 0;
+ else if (curbits>16)
+ curbits = 16;
+
+ uint16_t mask = 0xffff & ~((1 << (16 - curbits)) - 1);
+ intemp.in6_16[i] = htons(ntohs(in->in6_16[i]) & mask);
+ }
+
+ ircd_ntoa_r(inname, &intemp);
+ sprintf(buf, "%s/%u", inname, irc_bitlen(in, bits));
+
+ return buf;
+}
+