X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fnetifd.git;a=blobdiff_plain;f=proto-shell.c;h=2317209b2442c8619adc7ed1a62f6eb87234a11f;hp=f0738a98b5191a6fb220f9eafb7866e08f41d942;hb=120cd39654a33401423f1b65bb19e12681a6e46f;hpb=f365db4c75b7e824eb785be487b0afc18a45ef7f

diff --git a/proto-shell.c b/proto-shell.c
index f0738a9..2317209 100644
--- a/proto-shell.c
+++ b/proto-shell.c
@@ -1,3 +1,16 @@
+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
 #define _GNU_SOURCE
 
 #include <string.h>
@@ -36,13 +49,21 @@ struct proto_shell_handler {
 	char script_name[];
 };
 
+struct proto_shell_dependency {
+	struct list_head list;
+
+	struct proto_shell_state *proto;
+	struct interface_user dep;
+
+	union if_addr host;
+	bool v6;
+};
+
 struct proto_shell_state {
 	struct interface_proto_state proto;
 	struct proto_shell_handler *handler;
 	struct blob_attr *config;
 
-	struct device_user l3_dev;
-
 	struct uloop_timeout teardown_timeout;
 
 	struct netifd_process script_task;
@@ -52,8 +73,66 @@ struct proto_shell_state {
 	bool proto_task_killed;
 
 	int last_error;
+
+	struct list_head deps;
 };
 
+static void
+proto_shell_check_dependencies(struct proto_shell_state *state)
+{
+	struct proto_shell_dependency *dep;
+	bool available = true;
+
+	list_for_each_entry(dep, &state->deps, list) {
+		if (dep->dep.iface)
+			continue;
+
+		available = false;
+		break;
+	}
+
+	interface_set_available(state->proto.iface, available);
+}
+
+static void
+proto_shell_if_up_cb(struct interface_user *dep, struct interface *iface,
+		     enum interface_event ev);
+static void
+proto_shell_if_down_cb(struct interface_user *dep, struct interface *iface,
+		       enum interface_event ev);
+
+static void
+proto_shell_update_host_dep(struct proto_shell_dependency *dep)
+{
+	struct interface *iface;
+
+	if (dep->dep.iface)
+		goto out;
+
+	iface = interface_ip_add_target_route(&dep->host, dep->v6);
+	if (!iface)
+		goto out;
+
+	interface_remove_user(&dep->dep);
+	dep->dep.cb = proto_shell_if_down_cb;
+	interface_add_user(&dep->dep, iface);
+
+out:
+	proto_shell_check_dependencies(dep->proto);
+}
+
+static void
+proto_shell_clear_host_dep(struct proto_shell_state *state)
+{
+	struct proto_shell_dependency *dep, *tmp;
+
+	list_for_each_entry_safe(dep, tmp, &state->deps, list) {
+		interface_remove_user(&dep->dep);
+		list_del(&dep->list);
+		free(dep);
+	}
+}
+
 static int
 proto_shell_handler(struct interface_proto_state *proto,
 		    enum interface_proto_cmd cmd, bool force)
@@ -75,6 +154,7 @@ proto_shell_handler(struct interface_proto_state *proto,
 	if (cmd == PROTO_CMD_SETUP) {
 		action = "setup";
 		state->last_error = -1;
+		proto_shell_clear_host_dep(state);
 	} else {
 		if (state->sm == S_TEARDOWN)
 			return 0;
@@ -120,6 +200,41 @@ proto_shell_handler(struct interface_proto_state *proto,
 }
 
 static void
+proto_shell_if_up_cb(struct interface_user *dep, struct interface *iface,
+		     enum interface_event ev)
+{
+	struct proto_shell_dependency *pdep;
+
+	if (ev != IFEV_UP)
+		return;
+
+	pdep = container_of(dep, struct proto_shell_dependency, dep);
+	proto_shell_update_host_dep(pdep);
+}
+
+static void
+proto_shell_if_down_cb(struct interface_user *dep, struct interface *iface,
+		       enum interface_event ev)
+{
+	struct proto_shell_dependency *pdep;
+	struct proto_shell_state *state;
+
+	if (ev == IFEV_UP)
+		return;
+
+	pdep = container_of(dep, struct proto_shell_dependency, dep);
+	interface_remove_user(dep);
+	dep->cb = proto_shell_if_up_cb;
+	interface_add_user(dep, NULL);
+
+	state = pdep->proto;
+	if (state->sm == S_IDLE) {
+		state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
+		proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
+	}
+}
+
+static void
 proto_shell_task_finish(struct proto_shell_state *state,
 			struct netifd_process *task)
 {
@@ -201,6 +316,9 @@ proto_shell_free(struct interface_proto_state *proto)
 	struct proto_shell_state *state;
 
 	state = container_of(proto, struct proto_shell_state, proto);
+	proto_shell_clear_host_dep(state);
+	netifd_kill_process(&state->script_task);
+	netifd_kill_process(&state->proto_task);
 	free(state->config);
 	free(state);
 }
@@ -222,6 +340,31 @@ proto_shell_parse_route_list(struct interface *iface, struct blob_attr *attr,
 	}
 }
 
+static void
+proto_shell_parse_data(struct interface *iface, struct blob_attr *attr)
+{
+	struct blob_attr *cur;
+	int rem;
+
+	blobmsg_for_each_attr(cur, attr, rem)
+		interface_add_data(iface, cur);
+}
+
+static struct device *
+proto_shell_create_tunnel(const char *name, struct blob_attr *attr)
+{
+	struct device *dev;
+	struct blob_buf b;
+
+	memset(&b, 0, sizeof(b));
+	blob_buf_init(&b, 0);
+	blob_put(&b, 0, blobmsg_data(attr), blobmsg_data_len(attr));
+	dev = device_create(name, &tunnel_device_type, blob_data(b.head));
+	blob_buf_free(&b);
+
+	return dev;
+}
+
 enum {
 	NOTIFY_ACTION,
 	NOTIFY_ERROR,
@@ -234,6 +377,11 @@ enum {
 	NOTIFY_ADDR_EXT,
 	NOTIFY_ROUTES,
 	NOTIFY_ROUTES6,
+	NOTIFY_TUNNEL,
+	NOTIFY_DATA,
+	NOTIFY_KEEP,
+	NOTIFY_HOST,
+	NOTIFY_DNS,
 	NOTIFY_DNS_SEARCH,
 	__NOTIFY_LAST
 };
@@ -250,17 +398,24 @@ static const struct blobmsg_policy notify_attr[__NOTIFY_LAST] = {
 	[NOTIFY_ADDR_EXT] = { .name = "address-external", .type = BLOBMSG_TYPE_BOOL },
 	[NOTIFY_ROUTES] = { .name = "routes", .type = BLOBMSG_TYPE_ARRAY },
 	[NOTIFY_ROUTES6] = { .name = "routes6", .type = BLOBMSG_TYPE_ARRAY },
+	[NOTIFY_TUNNEL] = { .name = "tunnel", .type = BLOBMSG_TYPE_TABLE },
+	[NOTIFY_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
+	[NOTIFY_KEEP] = { .name = "keep", .type = BLOBMSG_TYPE_BOOL },
+	[NOTIFY_HOST] = { .name = "host", .type = BLOBMSG_TYPE_STRING },
+	[NOTIFY_DNS] = { .name = "dns", .type = BLOBMSG_TYPE_ARRAY },
 	[NOTIFY_DNS_SEARCH] = { .name = "dns_search", .type = BLOBMSG_TYPE_ARRAY },
 };
 
 static int
 proto_shell_update_link(struct proto_shell_state *state, struct blob_attr *data, struct blob_attr **tb)
 {
-	struct interface_ip_settings *ip;
 	struct interface *iface = state->proto.iface;
 	struct blob_attr *cur;
+	struct device *dev;
+	const char *devname;
 	int dev_create = 1;
 	bool addr_ext = false;
+	bool keep = false;
 	bool up;
 
 	if (!tb[NOTIFY_LINK_UP])
@@ -272,6 +427,9 @@ proto_shell_update_link(struct proto_shell_state *state, struct blob_attr *data,
 		return 0;
 	}
 
+	if ((cur = tb[NOTIFY_KEEP]) != NULL)
+		keep = blobmsg_get_bool(cur);
+
 	if ((cur = tb[NOTIFY_ADDR_EXT]) != NULL) {
 		addr_ext = blobmsg_get_bool(cur);
 		if (addr_ext)
@@ -281,18 +439,27 @@ proto_shell_update_link(struct proto_shell_state *state, struct blob_attr *data,
 	if (!tb[NOTIFY_IFNAME]) {
 		if (!iface->main_dev.dev)
 			return UBUS_STATUS_INVALID_ARGUMENT;
-	} else {
-		if (state->l3_dev.dev)
-			device_remove_user(&state->l3_dev);
+	} else if (!keep || iface->state != IFS_UP) {
+		keep = false;
+		devname = blobmsg_data(tb[NOTIFY_IFNAME]);
+		if (tb[NOTIFY_TUNNEL]) {
+			dev = proto_shell_create_tunnel(devname,
+				tb[NOTIFY_TUNNEL]);
+			if (!dev)
+				return UBUS_STATUS_INVALID_ARGUMENT;
+		} else {
+			dev = device_get(devname, dev_create);
+			if (!dev)
+				return UBUS_STATUS_NOT_FOUND;
+		}
 
-		device_add_user(&state->l3_dev,
-			device_get(blobmsg_data(tb[NOTIFY_IFNAME]), dev_create));
-		iface->l3_dev = &state->l3_dev;
-		device_claim(&state->l3_dev);
+		interface_set_l3_dev(iface, dev);
+		device_claim(&iface->l3_dev);
 	}
 
-	ip = &iface->proto_ip;
-	interface_update_start(iface);
+	if (!keep)
+		interface_update_start(iface);
+
 	proto_apply_ip_settings(iface, data, addr_ext);
 
 	if ((cur = tb[NOTIFY_ROUTES]) != NULL)
@@ -301,12 +468,20 @@ proto_shell_update_link(struct proto_shell_state *state, struct blob_attr *data,
 	if ((cur = tb[NOTIFY_ROUTES6]) != NULL)
 		proto_shell_parse_route_list(state->proto.iface, cur, true);
 
-	if ((cur = tb[NOTIFY_DNS_SEARCH]) != NULL)
-		interface_add_dns_search_list(ip, cur);
+	if ((cur = tb[NOTIFY_DNS]))
+		interface_add_dns_server_list(&iface->proto_ip, cur);
+
+	if ((cur = tb[NOTIFY_DNS_SEARCH]))
+		interface_add_dns_search_list(&iface->proto_ip, cur);
 
 	interface_update_complete(state->proto.iface);
 
-	state->proto.proto_event(&state->proto, IFPEV_UP);
+	if (!keep)
+		state->proto.proto_event(&state->proto, IFPEV_UP);
+	state->sm = S_IDLE;
+
+	if ((cur = tb[NOTIFY_DATA]))
+		proto_shell_parse_data(state->proto.iface, cur);
 
 	return 0;
 }
@@ -434,6 +609,48 @@ proto_shell_set_available(struct proto_shell_state *state, struct blob_attr **tb
 }
 
 static int
+proto_shell_add_host_dependency(struct proto_shell_state *state, struct blob_attr **tb)
+{
+	struct proto_shell_dependency *dep;
+	struct blob_attr *host = tb[NOTIFY_HOST];
+
+	if (!host)
+		return UBUS_STATUS_INVALID_ARGUMENT;
+
+	dep = calloc(1, sizeof(*dep));
+	if (!inet_pton(AF_INET, blobmsg_data(host), &dep->host)) {
+		free(dep);
+		return UBUS_STATUS_INVALID_ARGUMENT;
+	}
+
+	dep->proto = state;
+	dep->dep.cb = proto_shell_if_up_cb;
+	interface_add_user(&dep->dep, NULL);
+	list_add(&dep->list, &state->deps);
+	proto_shell_update_host_dep(dep);
+	if (!dep->dep.iface)
+		return UBUS_STATUS_NOT_FOUND;
+
+	return 0;
+}
+
+static int
+proto_shell_setup_failed(struct proto_shell_state *state)
+{
+	switch (state->sm) {
+	case S_IDLE:
+		state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
+		/* fall through */
+	case S_SETUP:
+		proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
+
+static int
 proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
 {
 	struct proto_shell_state *state;
@@ -458,6 +675,10 @@ proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
 		return proto_shell_block_restart(state, tb);
 	case 5:
 		return proto_shell_set_available(state, tb);
+	case 6:
+		return proto_shell_add_host_dependency(state, tb);
+	case 7:
+		return proto_shell_setup_failed(state);
 	default:
 		return UBUS_STATUS_INVALID_ARGUMENT;
 	}
@@ -470,6 +691,8 @@ proto_shell_attach(const struct proto_handler *h, struct interface *iface,
 	struct proto_shell_state *state;
 
 	state = calloc(1, sizeof(*state));
+	INIT_LIST_HEAD(&state->deps);
+
 	state->config = malloc(blob_pad_len(attr));
 	if (!state->config)
 		goto error;