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- /*
- * 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 "iprule.h"
- #include "proto.h"
- #include "config.h"
- bool config_init = false;
- static struct uci_context *uci_ctx;
- static struct uci_package *uci_network;
- static struct blob_buf b;
- 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, bool alias)
- {
- 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);
- 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 = blob_memdup(b.head);
- if (!config)
- goto error;
- 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);
- }
- 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_parse_rule(struct uci_section *s, bool v6)
- {
- void *rule;
- blob_buf_init(&b, 0);
- rule = blobmsg_open_array(&b, "rule");
- uci_to_blob(&b, s, &rule_attr_list);
- blobmsg_close_array(&b, rule);
- iprule_add(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, devtype->config_params);
- device_create(name, devtype, b.head);
- }
- }
- 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;
- uci_foreach_element(&uci_network->sections, e) {
- struct uci_section *s = uci_to_section(e);
- if (!strcmp(s->type, "interface"))
- config_parse_interface(s, false);
- }
- 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);
- }
- }
- static void
- config_init_routes(void)
- {
- struct interface *iface;
- struct uci_element *e;
- vlist_for_each_element(&interfaces, iface, node)
- interface_ip_update_start(&iface->config_ip);
- uci_foreach_element(&uci_network->sections, e) {
- struct uci_section *s = uci_to_section(e);
- if (!strcmp(s->type, "route"))
- config_parse_route(s, false);
- else if (!strcmp(s->type, "route6"))
- config_parse_route(s, true);
- }
- vlist_for_each_element(&interfaces, iface, node)
- interface_ip_update_complete(&iface->config_ip);
- }
- static void
- config_init_rules(void)
- {
- struct uci_element *e;
- iprule_update_start();
- uci_foreach_element(&uci_network->sections, e) {
- struct uci_section *s = uci_to_section(e);
- if (!strcmp(s->type, "rule"))
- config_parse_rule(s, false);
- else if (!strcmp(s->type, "rule6"))
- config_parse_rule(s, true);
- }
- iprule_update_complete();
- }
- 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;
- }
- vlist_update(&interfaces);
- config_init = true;
- device_lock();
- device_reset_config();
- config_init_devices();
- config_init_interfaces();
- config_init_routes();
- config_init_rules();
- config_init_globals();
- config_init = false;
- device_unlock();
- device_reset_old();
- device_init_pending();
- vlist_flush(&interfaces);
- device_free_unused(NULL);
- interface_refresh_assignments(false);
- interface_start_pending();
- }
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