X-Git-Url: https://git.archive.openwrt.org/?p=project%2Fnetifd.git;a=blobdiff_plain;f=config.c;h=556daf8f0efa91f3406175ee47ff5ca82554af2e;hp=1e465c5be0702f8d601d44c85c7747a056069124;hb=486aa750a164d41905beb61afec89268e3eb7f48;hpb=71016cda9739642fd49ffa949555e7240b7b1284

diff --git a/config.c b/config.c
index 1e465c5..556daf8 100644
--- a/config.c
+++ b/config.c
@@ -1,17 +1,35 @@
+/*
+ * 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.
+ */
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
 
+#include <uci.h>
+
 #include "netifd.h"
 #include "interface.h"
+#include "interface-ip.h"
+#include "proto.h"
+#include "config.h"
 
-struct uci_context *uci_ctx;
-static struct uci_package *uci_network;
 bool config_init = false;
-static struct blob_buf b;
 
+static struct uci_context *uci_ctx;
+static struct uci_package *uci_network;
+static struct blob_buf b;
 
-static void uci_attr_to_blob(struct blob_buf *b, const char *str,
+static bool uci_attr_to_blob(struct blob_buf *b, const char *str,
 			     const char *name, enum blobmsg_type type)
 {
 	char *err;
@@ -27,20 +45,21 @@ static void uci_attr_to_blob(struct blob_buf *b, const char *str,
 		else if (!strcmp(str, "false") || !strcmp(str, "0"))
 			intval = 0;
 		else
-			return;
+			return false;
 
 		blobmsg_add_u8(b, name, intval);
 		break;
 	case BLOBMSG_TYPE_INT32:
 		intval = strtol(str, &err, 0);
 		if (*err)
-			return;
+			return false;
 
 		blobmsg_add_u32(b, name, intval);
 		break;
 	default:
-		break;
+		return false;
 	}
+	return true;
 }
 
 static void uci_array_to_blob(struct blob_buf *b, struct uci_option *o,
@@ -69,14 +88,14 @@ static void uci_array_to_blob(struct blob_buf *b, struct uci_option *o,
 	free(str);
 }
 
-static void __uci_to_blob(struct blob_buf *b, struct uci_section *s,
-			  const struct config_param_list *p)
+static int __uci_to_blob(struct blob_buf *b, struct uci_section *s,
+			 const struct config_param_list *p)
 {
-	const struct blobmsg_policy *attr;
+	const struct blobmsg_policy *attr = NULL;
 	struct uci_element *e;
 	struct uci_option *o;
 	void *array;
-	int i;
+	int i, ret = 0;
 
 	uci_foreach_element(&s->options, e) {
 		for (i = 0; i < p->n_params; i++) {
@@ -97,86 +116,363 @@ static void __uci_to_blob(struct blob_buf *b, struct uci_section *s,
 			array = blobmsg_open_array(b, attr->name);
 			uci_array_to_blob(b, o, p->info[i].type);
 			blobmsg_close_array(b, array);
+			ret++;
 			continue;
 		}
 
 		if (o->type == UCI_TYPE_LIST)
 			continue;
 
-		uci_attr_to_blob(b, o->v.string, attr->name, attr->type);
+		ret += uci_attr_to_blob(b, o->v.string, attr->name, attr->type);
 	}
+
+	return ret;
 }
 
-static void uci_to_blob(struct blob_buf *b, struct uci_section *s,
-			const struct config_param_list *p)
+static int uci_to_blob(struct blob_buf *b, struct uci_section *s,
+		       const struct config_param_list *p)
 {
+	int ret = 0;
 	int i;
 
-	__uci_to_blob(b, s, p);
+	ret += __uci_to_blob(b, s, p);
 	for (i = 0; i < p->n_next; i++)
-		uci_to_blob(b, s, p->next[i]);
+		ret += uci_to_blob(b, s, p->next[i]);
+
+	return ret;
+}
+
+static int
+config_parse_bridge_interface(struct uci_section *s)
+{
+	char *name;
+
+	name = alloca(strlen(s->e.name) + 4);
+	sprintf(name, "br-%s", s->e.name);
+	blobmsg_add_string(&b, "name", name);
+
+	uci_to_blob(&b, s, bridge_device_type.config_params);
+	if (!device_create(name, &bridge_device_type, b.head)) {
+		D(INTERFACE, "Failed to create bridge for interface '%s'\n", s->e.name);
+		return -EINVAL;
+	}
+
+	blob_buf_init(&b, 0);
+	blobmsg_add_string(&b, "ifname", name);
+	return 0;
 }
 
 static void
-config_parse_interface(struct uci_section *s)
+config_parse_interface(struct uci_section *s, bool alias)
 {
-	DPRINTF("Create interface '%s'\n", s->e.name);
+	struct interface *iface;
+	const char *type = NULL;
+	struct blob_attr *config;
+	struct device *dev;
+	bool bridge = false;
 
 	blob_buf_init(&b, 0);
+
+	if (!alias)
+		type = uci_lookup_option_string(uci_ctx, s, "type");
+	if (type && !strcmp(type, "bridge")) {
+		if (config_parse_bridge_interface(s))
+			return;
+
+		bridge = true;
+	}
+
 	uci_to_blob(&b, s, &interface_attr_list);
-	interface_alloc(s->e.name, s, b.head);
+	iface = calloc(1, sizeof(*iface));
+	if (!iface)
+		return;
+
+	interface_init(iface, s->e.name, b.head);
+
+	if (iface->proto_handler && iface->proto_handler->config_params)
+		uci_to_blob(&b, s, iface->proto_handler->config_params);
+
+	if (!bridge && uci_to_blob(&b, s, simple_device_type.config_params))
+		iface->device_config = true;
+
+	config = malloc(blob_pad_len(b.head));
+	if (!config)
+		goto error;
+
+	memcpy(config, b.head, blob_pad_len(b.head));
+
+	if (alias) {
+		if (!interface_add_alias(iface, config))
+			goto error_free_config;
+	} else {
+		interface_add(iface, config);
+	}
+
+	/*
+	 * need to look up the interface name again, in case of config update,
+	 * the pointer will have changed
+	 */
+	iface = vlist_find(&interfaces, s->e.name, iface, node);
+	if (!iface)
+		return;
+
+	dev = iface->main_dev.dev;
+	if (!dev || !dev->default_config)
+		return;
+
+	blob_buf_init(&b, 0);
+	uci_to_blob(&b, s, dev->type->config_params);
+	if (blob_len(b.head) == 0)
+		return;
+
+	device_set_config(dev, dev->type, b.head);
+	return;
+error_free_config:
+	free(config);
+error:
+	free(iface);
 }
 
-void
+static void
+config_parse_route(struct uci_section *s, bool v6)
+{
+	void *route;
+
+	blob_buf_init(&b, 0);
+	route = blobmsg_open_array(&b, "route");
+	uci_to_blob(&b, s, &route_attr_list);
+	blobmsg_close_array(&b, route);
+	interface_ip_add_route(NULL, blob_data(b.head), v6);
+}
+
+static void
 config_init_devices(void)
 {
 	struct uci_element *e;
 
 	uci_foreach_element(&uci_network->sections, e) {
 		struct uci_section *s = uci_to_section(e);
+		const struct device_type *devtype = NULL;
+		const char *type, *name;
 
 		if (strcmp(s->type, "device") != 0)
 			continue;
 
+		name = uci_lookup_option_string(uci_ctx, s, "name");
+		if (!name)
+			continue;
+
+		type = uci_lookup_option_string(uci_ctx, s, "type");
+		if (type) {
+			if (!strcmp(type, "bridge"))
+				devtype = &bridge_device_type;
+			else if (!strcmp(type, "tunnel"))
+				devtype = &tunnel_device_type;
+		}
+
+		if (!devtype)
+			devtype = &simple_device_type;
+
 		blob_buf_init(&b, 0);
-		uci_to_blob(&b, s, &device_attr_list);
-		device_create(b.head, s);
+		uci_to_blob(&b, s, devtype->config_params);
+		device_create(name, devtype, b.head);
 	}
 }
 
-void
-config_init_interfaces(const char *name)
+bool
+config_diff(struct blob_attr **tb1, struct blob_attr **tb2,
+	    const struct config_param_list *config, unsigned long *diff)
+{
+	bool ret = false;
+	int i;
+
+	for (i = 0; i < config->n_params; i++) {
+		if (!tb1[i] && !tb2[i])
+			continue;
+
+		if (!!tb1[i] != !!tb2[i])
+			goto mark;
+
+		if (blob_len(tb1[i]) != blob_len(tb2[i]))
+			goto mark;
+
+		if (memcmp(tb1[i], tb2[i], blob_raw_len(tb1[i])) != 0)
+			goto mark;
+
+		continue;
+
+mark:
+		ret = true;
+		if (diff)
+			set_bit(diff, i);
+		else
+			return ret;
+	}
+
+	return ret;
+}
+
+
+static bool
+__config_check_equal(struct blob_attr *c1, struct blob_attr *c2,
+		     const struct config_param_list *config)
+{
+	struct blob_attr **tb1, **tb2;
+
+	if (!!c1 ^ !!c2)
+		return false;
+
+	if (!c1 && !c2)
+		return true;
+
+	tb1 = alloca(config->n_params * sizeof(struct blob_attr *));
+	blobmsg_parse(config->params, config->n_params, tb1,
+		blob_data(c1), blob_len(c1));
+
+	tb2 = alloca(config->n_params * sizeof(struct blob_attr *));
+	blobmsg_parse(config->params, config->n_params, tb2,
+		blob_data(c2), blob_len(c2));
+
+	return !config_diff(tb1, tb2, config, NULL);
+}
+
+bool
+config_check_equal(struct blob_attr *c1, struct blob_attr *c2,
+		   const struct config_param_list *config)
+{
+	int i;
+
+	if (!__config_check_equal(c1, c2, config))
+		return false;
+
+	for (i = 0; i < config->n_next; i++) {
+		if (!__config_check_equal(c1, c2, config->next[i]))
+			return false;
+	}
+
+	return true;
+}
+
+struct blob_attr *
+config_memdup(struct blob_attr *attr)
 {
-	struct uci_context *ctx;
+	struct blob_attr *ret;
+	int size = blob_pad_len(attr);
+
+	ret = malloc(size);
+	if (!ret)
+		return NULL;
+
+	memcpy(ret, attr, size);
+	return ret;
+}
+
+static struct uci_package *
+config_init_package(const char *config)
+{
+	struct uci_context *ctx = uci_ctx;
 	struct uci_package *p = NULL;
+
+	if (!ctx) {
+		ctx = uci_alloc_context();
+		uci_ctx = ctx;
+
+#ifdef DUMMY_MODE
+		uci_set_confdir(ctx, "./config");
+		uci_set_savedir(ctx, "./tmp");
+#endif
+	} else {
+		p = uci_lookup_package(ctx, config);
+		if (p)
+			uci_unload(ctx, p);
+	}
+
+	if (uci_load(ctx, config, &p))
+		return NULL;
+
+	return p;
+}
+
+static void
+config_init_interfaces(void)
+{
 	struct uci_element *e;
 
-	ctx = uci_alloc_context();
-	uci_ctx = ctx;
+	uci_foreach_element(&uci_network->sections, e) {
+		struct uci_section *s = uci_to_section(e);
 
-	uci_set_confdir(ctx, "./config");
+		if (!strcmp(s->type, "interface"))
+			config_parse_interface(s, false);
+	}
 
-	if (uci_load(ctx, "network", &p)) {
-		fprintf(stderr, "Failed to load network config\n");
-		return;
+	uci_foreach_element(&uci_network->sections, e) {
+		struct uci_section *s = uci_to_section(e);
+
+		if (!strcmp(s->type, "alias"))
+			config_parse_interface(s, true);
 	}
+}
 
-	uci_network = p;
-	config_init = true;
+static void
+config_init_routes(void)
+{
+	struct interface *iface;
+	struct uci_element *e;
 
-	config_init_devices();
+	vlist_for_each_element(&interfaces, iface, node)
+		interface_ip_update_start(&iface->config_ip);
 
-	uci_foreach_element(&p->sections, e) {
+	uci_foreach_element(&uci_network->sections, e) {
 		struct uci_section *s = uci_to_section(e);
 
-		if (name && strcmp(s->e.name, name) != 0)
-			continue;
+		if (!strcmp(s->type, "route"))
+			config_parse_route(s, false);
+		else if (!strcmp(s->type, "route6"))
+			config_parse_route(s, true);
+	}
 
-		if (!strcmp(s->type, "interface"))
-			config_parse_interface(s);
+	vlist_for_each_element(&interfaces, iface, node)
+		interface_ip_update_complete(&iface->config_ip);
+}
+
+static void
+config_init_globals(void)
+{
+	struct uci_section *globals = uci_lookup_section(
+			uci_ctx, uci_network, "globals");
+	if (!globals)
+		return;
+
+	const char *ula_prefix = uci_lookup_option_string(
+			uci_ctx, globals, "ula_prefix");
+	interface_ip_set_ula_prefix(ula_prefix);
+}
+
+void
+config_init_all(void)
+{
+	uci_network = config_init_package("network");
+	if (!uci_network) {
+		fprintf(stderr, "Failed to load network config\n");
+		return;
 	}
-	device_free_all();
+
+	vlist_update(&interfaces);
+	config_init = true;
+	device_lock();
+
+	device_reset_config();
+	config_init_devices();
+	config_init_interfaces();
+	config_init_routes();
+	config_init_globals();
+
 	config_init = false;
+	device_unlock();
 
+	device_reset_old();
+	device_init_pending();
+	vlist_flush(&interfaces);
+	device_free_unused(NULL);
 	interface_start_pending();
 }