add mac address to device info
[project/netifd.git] / config.c
index 2442eff..8472d44 100644 (file)
--- a/config.c
+++ b/config.c
 #include <stdlib.h>
 #include <stdio.h>
 
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <net/ethernet.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;
 
-enum {
-       SIF_TYPE,
-       SIF_IFNAME,
-       __SIF_MAX,
-};
-
-static const struct uci_parse_option if_opts[__SIF_MAX] = {
-       [SIF_TYPE] = { "type", UCI_TYPE_STRING },
-       [SIF_IFNAME] = { "ifname", UCI_TYPE_STRING },
-};
+static struct uci_context *uci_ctx;
+static struct uci_package *uci_network;
+static struct blob_buf b;
 
-static void
-config_parse_interface(struct uci_section *s)
+static void uci_attr_to_blob(struct blob_buf *b, const char *str,
+                            const char *name, enum blobmsg_type type)
 {
-       struct uci_option *opts[__SIF_MAX];
-       struct interface *iface;
-       struct device *dev;
-       const char *type;
+       char *err;
+       int intval;
+
+       switch (type) {
+       case BLOBMSG_TYPE_STRING:
+               blobmsg_add_string(b, name, str);
+               break;
+       case BLOBMSG_TYPE_BOOL:
+               if (!strcmp(str, "true") || !strcmp(str, "1"))
+                       intval = 1;
+               else if (!strcmp(str, "false") || !strcmp(str, "0"))
+                       intval = 0;
+               else
+                       return;
 
-       DPRINTF("Create interface '%s'\n", s->e.name);
+               blobmsg_add_u8(b, name, intval);
+               break;
+       case BLOBMSG_TYPE_INT32:
+               intval = strtol(str, &err, 0);
+               if (*err)
+                       return;
 
-       iface = alloc_interface(s->e.name);
-       if (!iface)
+               blobmsg_add_u32(b, name, intval);
+               break;
+       default:
+               break;
+       }
+}
+
+static void uci_array_to_blob(struct blob_buf *b, struct uci_option *o,
+                             enum blobmsg_type type)
+{
+       struct uci_element *e;
+       char *str, *next, *word;
+
+       if (o->type == UCI_TYPE_LIST) {
+               uci_foreach_element(&o->v.list, e) {
+                       uci_attr_to_blob(b, e->name, NULL, type);
+               }
                return;
+       }
 
-       uci_parse_section(s, if_opts, __SIF_MAX, opts);
+       str = strdup(o->v.string);
+       next = str;
 
-       if (opts[SIF_TYPE]) {
-               type = opts[SIF_TYPE]->v.string;
+       while ((word = strsep(&next, " \t")) != NULL) {
+               if (!*word)
+                       continue;
 
-               if (!strcmp(type, "bridge")) {
-                       interface_attach_bridge(iface, s);
-                       return;
-               }
+               uci_attr_to_blob(b, word, NULL, type);
        }
 
-       if (opts[SIF_IFNAME]) {
-               dev = get_device(opts[SIF_IFNAME]->v.string, true);
-               if (!dev)
-                       return;
+       free(str);
+}
+
+static void __uci_to_blob(struct blob_buf *b, struct uci_section *s,
+                         const struct config_param_list *p)
+{
+       const struct blobmsg_policy *attr = NULL;
+       struct uci_element *e;
+       struct uci_option *o;
+       void *array;
+       int i;
+
+       uci_foreach_element(&s->options, e) {
+               for (i = 0; i < p->n_params; i++) {
+                       attr = &p->params[i];
+                       if (!strcmp(attr->name, e->name))
+                               break;
+               }
+
+               if (i == p->n_params)
+                       continue;
+
+               o = uci_to_option(e);
+
+               if (attr->type == BLOBMSG_TYPE_ARRAY) {
+                       if (!p->info)
+                               continue;
+
+                       array = blobmsg_open_array(b, attr->name);
+                       uci_array_to_blob(b, o, p->info[i].type);
+                       blobmsg_close_array(b, array);
+                       continue;
+               }
+
+               if (o->type == UCI_TYPE_LIST)
+                       continue;
 
-               add_device_user(&iface->main_dev, dev);
+               uci_attr_to_blob(b, o->v.string, attr->name, attr->type);
        }
 }
 
-enum {
-       SDEV_NAME,
-       SDEV_TYPE,
-       SDEV_MTU,
-       SDEV_MACADDR,
-       SDEV_TXQUEUELEN,
-       __SDEV_MAX,
-};
+static void uci_to_blob(struct blob_buf *b, struct uci_section *s,
+                       const struct config_param_list *p)
+{
+       int i;
 
-static const struct uci_parse_option dev_opts[__SDEV_MAX] = {
-       [SDEV_NAME] = { "name", UCI_TYPE_STRING },
-       [SDEV_TYPE] = { "type", UCI_TYPE_STRING },
-       [SDEV_MTU] = { "mtu", UCI_TYPE_STRING },
-       [SDEV_MACADDR] = { "macaddr", UCI_TYPE_STRING },
-       [SDEV_TXQUEUELEN] = { "txqueuelen", UCI_TYPE_STRING },
-};
+       __uci_to_blob(b, s, p);
+       for (i = 0; i < p->n_next; i++)
+               uci_to_blob(b, s, p->next[i]);
+}
 
-static bool
-add_int_option(struct uci_option *o, unsigned int *dest)
+static int
+config_parse_bridge_interface(struct uci_section *s)
 {
-       char *error = NULL;
-       int val;
+       char *name;
 
-       if (!o)
-               return false;
+       name = alloca(strlen(s->e.name) + 4);
+       sprintf(name, "br-%s", s->e.name);
+       blobmsg_add_string(&b, "name", name);
 
-       val = strtoul(o->v.string, &error, 0);
-       if (error && *error)
-               return false;
+       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;
+       }
 
-       *dest = val;
-       return true;
+       blob_buf_init(&b, 0);
+       blobmsg_add_string(&b, "ifname", name);
+       return 0;
 }
 
 static void
-config_init_device_settings(struct device *dev, struct uci_option **opts)
+config_parse_interface(struct uci_section *s)
 {
-       struct ether_addr *ea;
+       struct interface *iface;
+       const char *type;
+       struct blob_attr *config;
+       struct device *dev;
 
-       dev->flags = 0;
+       blob_buf_init(&b, 0);
 
-       if (add_int_option(opts[SDEV_MTU], &dev->mtu))
-               dev->flags |= DEV_OPT_MTU;
+       type = uci_lookup_option_string(uci_ctx, s, "type");
+       if (type && !strcmp(type, "bridge"))
+               if (config_parse_bridge_interface(s))
+                       return;
 
-       if (add_int_option(opts[SDEV_TXQUEUELEN], &dev->txqueuelen))
-               dev->flags |= DEV_OPT_TXQUEUELEN;
+       uci_to_blob(&b, s, &interface_attr_list);
+       iface = calloc(1, sizeof(*iface));
+       if (!iface)
+               return;
 
-       if (opts[SDEV_MACADDR]) {
-               ea = ether_aton(opts[SDEV_MACADDR]->v.string);
-               if (ea) {
-                       memcpy(dev->macaddr, ea, sizeof(dev->macaddr));
-                       dev->flags |= DEV_OPT_MACADDR;
-               }
+       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);
+
+       config = malloc(blob_pad_len(b.head));
+       if (!config) {
+               free(iface);
+               return;
        }
+
+       memcpy(config, b.head, blob_pad_len(b.head));
+       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);
 }
 
-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;
-       struct device *dev;
-       struct uci_option *opts[__SDEV_MAX];
 
        uci_foreach_element(&uci_network->sections, e) {
                struct uci_section *s = uci_to_section(e);
+               const struct device_type *devtype;
+               const char *type, *name;
 
                if (strcmp(s->type, "device") != 0)
                        continue;
 
-               uci_parse_section(s, dev_opts, __SDEV_MAX, opts);
-               if (!opts[SDEV_NAME])
+               name = uci_lookup_option_string(uci_ctx, s, "name");
+               if (!name)
                        continue;
 
-               dev = NULL;
-               if (opts[SDEV_TYPE]) {
-                       const char *type = opts[SDEV_TYPE]->v.string;
+               type = uci_lookup_option_string(uci_ctx, s, "type");
+               if (type && !strcmp(type, "bridge"))
+                       devtype = &bridge_device_type;
+               else
+                       devtype = &simple_device_type;
 
-                       if (!strcmp(type, "bridge"))
-                               dev = bridge_create(opts[SDEV_NAME]->v.string, s);
-               } else {
-                       dev = get_device(opts[SDEV_NAME]->v.string, true);
-               }
+               blob_buf_init(&b, 0);
+               uci_to_blob(&b, s, devtype->config_params);
+               device_create(name, devtype, b.head);
+       }
+}
+
+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;
 
-               if (!dev)
+       for (i = 0; i < config->n_params; i++) {
+               if (!tb1[i] && !tb2[i])
                        continue;
 
-               config_init_device_settings(dev, opts);
-               dev->config_hash = uci_hash_options(opts, __SDEV_MAX);
+               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;
 }
 
-void
-config_init_interfaces(const char *name)
+
+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 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;
+       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);
+       }
+}
+
+static void
+config_init_routes(void)
+{
+       struct interface *iface;
        struct uci_element *e;
 
-       ctx = uci_alloc_context();
-       uci_ctx = ctx;
+       vlist_for_each_element(&interfaces, iface, node)
+               interface_ip_update_start(&iface->config_ip);
 
-       uci_set_confdir(ctx, "./config");
+       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);
+}
 
-       if (uci_load(ctx, "network", &p)) {
+void
+config_init_all(void)
+{
+       uci_network = config_init_package("network");
+       if (!uci_network) {
                fprintf(stderr, "Failed to load network config\n");
                return;
        }
 
-       uci_network = p;
        config_init = true;
+       device_lock();
 
+       device_reset_config();
        config_init_devices();
+       config_init_interfaces();
+       config_init_routes();
 
-       uci_foreach_element(&p->sections, e) {
-               struct uci_section *s = uci_to_section(e);
-
-               if (name && strcmp(s->e.name, name) != 0)
-                       continue;
-
-               if (!strcmp(s->type, "interface"))
-                       config_parse_interface(s);
-       }
-       cleanup_devices();
        config_init = false;
+       device_unlock();
 
-       start_pending_interfaces();
+       device_reset_old();
+       device_init_pending();
+       device_free_unused(NULL);
+       interface_start_pending();
 }