}
}
- /*
- * Trim off a colon suffix if it's there.
- */
- host[strcspn(host, ":")] = '\0';
+ /*
+ * Trim a colon suffix off the hostname if it's there. In
+ * order to protect IPv6 address literals against this
+ * treatment, we do not do this if there's _more_ than one
+ * colon.
+ */
+ {
+ char *c = strchr(host, ':');
+
+ if (c) {
+ char *d = strchr(c+1, ':');
+ if (!d)
+ *c = '\0';
+ }
+ }
/*
* Remove any remaining whitespace.