utils: add support for passings address family to network_get_endpoint()

Can be used to limit results to IPv4 addresses

Signed-off-by: Felix Fietkau <[email protected]>

Author: nbd168

cli.c

@@ -274,7 +274,7 @@ static int cmd_sync(const char *endpoint, int argc, char **argv)
 			return 1;
 	}
 
-	if (network_get_endpoint(&ep, endpoint, UNETD_GLOBAL_PEX_PORT, 0) < 0) {
+	if (network_get_endpoint(&ep, AF_UNSPEC, endpoint, UNETD_GLOBAL_PEX_PORT, 0) < 0) {
 		INFO("Invalid hostname/port %s\n", endpoint);
 		return 1;
 	}

host.c

@@ -383,7 +383,7 @@ network_hosts_connect_cb(struct uloop_timeout *t)
 
 		ep = &peer->state.next_endpoint;
 		if (peer->endpoint &&
-		    network_get_endpoint(ep, peer->endpoint, peer->port,
+		    network_get_endpoint(ep, AF_UNSPEC, peer->endpoint, peer->port,
 					 peer->state.connect_attempt++))
 			continue;
 

pex.c

@@ -715,7 +715,7 @@ network_pex_open_auth_connect(struct network *net)
 		if (!peer->endpoint || peer->dynamic)
 			continue;
 
-		if (network_get_endpoint(&ep, peer->endpoint,
+		if (network_get_endpoint(&ep, AF_UNSPEC, peer->endpoint,
 					 UNETD_GLOBAL_PEX_PORT, 0) < 0)
 			continue;
 
@@ -729,7 +729,7 @@ network_pex_open_auth_connect(struct network *net)
 	blobmsg_for_each_attr(cur, net->config.auth_connect, rem) {
 		union network_endpoint ep = {};
 
-		if (network_get_endpoint(&ep, blobmsg_get_string(cur),
+		if (network_get_endpoint(&ep, AF_UNSPEC, blobmsg_get_string(cur),
 					 UNETD_GLOBAL_PEX_PORT, 0) < 0)
 			continue;
 

ubus.c

@@ -234,7 +234,7 @@ ubus_network_connect(struct ubus_context *ctx, struct ubus_object *obj,
 		return UBUS_STATUS_INVALID_ARGUMENT;
 
 	if ((cur = tb[CONNECT_ATTR_ADDRESS]) == NULL ||
-	    network_get_endpoint(&ep, blobmsg_get_string(cur), UNETD_GLOBAL_PEX_PORT, 0) < 0 ||
+	    network_get_endpoint(&ep, AF_UNSPEC, blobmsg_get_string(cur), UNETD_GLOBAL_PEX_PORT, 0) < 0 ||
 	    !ep.in.sin_port)
 		return UBUS_STATUS_INVALID_ARGUMENT;
 

utils.c

@@ -17,12 +17,12 @@
 
 #include "unetd.h"
 
-int network_get_endpoint(union network_endpoint *dest, const char *str,
+int network_get_endpoint(union network_endpoint *dest, int af, const char *str,
 			 int default_port, int idx)
 {
 	struct addrinfo hints = {
 		.ai_flags = AI_ADDRCONFIG,
-		.ai_family = AF_UNSPEC,
+		.ai_family = af,
 	};
 	char *buf = strdup(str);
 	char *host = buf, *port;
@@ -33,6 +33,9 @@ int network_get_endpoint(union network_endpoint *dest, const char *str,
 	memset(dest, 0, sizeof(*dest));
 
 	if (*host == '[') {
+		if (af == AF_INET)
+			goto out;
+
 		host++;
 		port = strchr(host, ']');
 		if (!port)

utils.h

@@ -53,7 +53,7 @@ network_endpoint_addr_equal(union network_endpoint *ep1, union network_endpoint
 	return !memcmp(a1, a2, len);
 }
 
-int network_get_endpoint(union network_endpoint *dest, const char *str,
+int network_get_endpoint(union network_endpoint *dest, int af, const char *str,
 			 int default_port, int idx);
 int network_get_subnet(int af, union network_addr *addr, int *mask,
 		       const char *str);