Function separate_address_and_port

common/wireaddr.c:303–337

Valid forms: * * [anything]: * anything-without-colons-or-left-brace: * anything-without-colons * string-with-multiple-colons * * Returns false if it wasn't one of these forms. If it returns true, * it only overwrites *port if it was specified by above. */

 * it only overwrites *port if it was specified by <number> above.
 */
bool separate_address_and_port(const tal_t *ctx, const char *arg,
			       char **addr, u16 *port)
{
	const char *portcolon;

	if (strstarts(arg, "[")) {
		const char *end = strchr(arg, ']');
		if (!end)
			return false;
		/* Copy inside [] */
		*addr = tal_strndup(ctx, arg + 1, end - arg - 1);
		portcolon = strchr(end+1, ':');
	} else {
		portcolon = strchr(arg, ':');
		if (portcolon) {
			/* Disregard if there's more than one : or if it's at
			   the end */
			if (portcolon != strrchr(arg, ':')
			    || portcolon[1] == '\0')
				portcolon = NULL;
		}
		if (portcolon)
			*addr = tal_strndup(ctx, arg, portcolon - arg);
		else
			*addr = tal_strdup(ctx, arg);
	}

	if (portcolon) {
		char *endp;
		*port = strtol(portcolon + 1, &endp, 10);
		return *port != 0 && *endp == '\0';
	}

	return true;
}

bool is_ipaddr(const char *arg)
{