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- /*
- * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
- * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1
- * 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 <libubox/blobmsg_json.h>
- #include <libubox/avl-cmp.h>
- #include "procd.h"
- #include "service.h"
- #include "instance.h"
- #include "rcS.h"
- struct avl_tree services;
- static struct blob_buf b;
- static void
- service_instance_add(struct service *s, struct blob_attr *attr)
- {
- struct service_instance *in;
- if (blobmsg_type(attr) != BLOBMSG_TYPE_TABLE)
- return;
- in = calloc(1, sizeof(*in));
- if (!in)
- return;
- instance_init(in, s, attr);
- vlist_add(&s->instances, &in->node, (void *) in->name);
- }
- static void
- service_instance_update(struct vlist_tree *tree, struct vlist_node *node_new,
- struct vlist_node *node_old)
- {
- struct service_instance *in_o = NULL, *in_n = NULL;
- if (node_old)
- in_o = container_of(node_old, struct service_instance, node);
- if (node_new)
- in_n = container_of(node_new, struct service_instance, node);
- if (in_o && in_n) {
- DEBUG(1, "Update instance %s::%s\n", in_o->srv->name, in_o->name);
- instance_update(in_o, in_n);
- instance_free(in_n);
- } else if (in_o) {
- DEBUG(1, "Free instance %s::%s\n", in_o->srv->name, in_o->name);
- instance_stop(in_o);
- instance_free(in_o);
- } else if (in_n) {
- DEBUG(1, "Create instance %s::%s\n", in_n->srv->name, in_n->name);
- instance_start(in_n);
- }
- }
- static struct service *
- service_alloc(const char *name)
- {
- struct service *s;
- char *new_name;
- s = calloc_a(sizeof(*s), &new_name, strlen(name) + 1);
- strcpy(new_name, name);
- vlist_init(&s->instances, avl_strcmp, service_instance_update);
- s->instances.keep_old = true;
- s->name = new_name;
- s->avl.key = s->name;
- return s;
- }
- enum {
- SERVICE_SET_NAME,
- SERVICE_SET_SCRIPT,
- SERVICE_SET_INSTANCES,
- SERVICE_SET_TRIGGER,
- __SERVICE_SET_MAX
- };
- static const struct blobmsg_policy service_set_attrs[__SERVICE_SET_MAX] = {
- [SERVICE_SET_NAME] = { "name", BLOBMSG_TYPE_STRING },
- [SERVICE_SET_SCRIPT] = { "script", BLOBMSG_TYPE_STRING },
- [SERVICE_SET_INSTANCES] = { "instances", BLOBMSG_TYPE_TABLE },
- [SERVICE_SET_TRIGGER] = { "triggers", BLOBMSG_TYPE_ARRAY },
- };
- static int
- service_update(struct service *s, struct blob_attr *config, struct blob_attr **tb, bool add)
- {
- struct blob_attr *cur;
- int rem;
- if (s->trigger) {
- trigger_del(s);
- free(s->trigger);
- s->trigger = NULL;
- }
- if (tb[SERVICE_SET_TRIGGER] && blobmsg_data_len(tb[SERVICE_SET_TRIGGER])) {
- s->trigger = malloc(blob_pad_len(tb[SERVICE_SET_TRIGGER]));
- if (!s->trigger)
- return -1;
- memcpy(s->trigger, tb[SERVICE_SET_TRIGGER], blob_pad_len(tb[SERVICE_SET_TRIGGER]));
- trigger_add(s->trigger, s);
- }
- if (tb[SERVICE_SET_INSTANCES]) {
- if (!add)
- vlist_update(&s->instances);
- blobmsg_for_each_attr(cur, tb[SERVICE_SET_INSTANCES], rem) {
- service_instance_add(s, cur);
- }
- if (!add)
- vlist_flush(&s->instances);
- }
- rc(s->name, "running");
- return 0;
- }
- static void
- service_delete(struct service *s)
- {
- vlist_flush_all(&s->instances);
- avl_delete(&services, &s->avl);
- trigger_del(s);
- s->trigger = NULL;
- free(s->trigger);
- free(s);
- }
- enum {
- SERVICE_ATTR_NAME,
- __SERVICE_ATTR_MAX,
- };
- static const struct blobmsg_policy service_attrs[__SERVICE_ATTR_MAX] = {
- [SERVICE_ATTR_NAME] = { "name", BLOBMSG_TYPE_STRING },
- };
- enum {
- SERVICE_DEL_ATTR_NAME,
- SERVICE_DEL_ATTR_INSTANCE,
- __SERVICE_DEL_ATTR_MAX,
- };
- static const struct blobmsg_policy service_del_attrs[__SERVICE_DEL_ATTR_MAX] = {
- [SERVICE_DEL_ATTR_NAME] = { "name", BLOBMSG_TYPE_STRING },
- [SERVICE_DEL_ATTR_INSTANCE] = { "instance", BLOBMSG_TYPE_STRING },
- };
- enum {
- SERVICE_LIST_ATTR_VERBOSE,
- __SERVICE_LIST_ATTR_MAX,
- };
- static const struct blobmsg_policy service_list_attrs[__SERVICE_LIST_ATTR_MAX] = {
- [SERVICE_LIST_ATTR_VERBOSE] = { "verbose", BLOBMSG_TYPE_BOOL },
- };
- enum {
- EVENT_TYPE,
- EVENT_DATA,
- __EVENT_MAX
- };
- static const struct blobmsg_policy event_policy[__EVENT_MAX] = {
- [EVENT_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING },
- [EVENT_DATA] = { .name = "data", .type = BLOBMSG_TYPE_TABLE },
- };
- static int
- service_handle_set(struct ubus_context *ctx, struct ubus_object *obj,
- struct ubus_request_data *req, const char *method,
- struct blob_attr *msg)
- {
- struct blob_attr *tb[__SERVICE_SET_MAX], *cur;
- struct service *s = NULL;
- const char *name;
- int ret = UBUS_STATUS_INVALID_ARGUMENT;
- bool add = !strcmp(method, "add");
- blobmsg_parse(service_set_attrs, __SERVICE_SET_MAX, tb, blob_data(msg), blob_len(msg));
- cur = tb[SERVICE_ATTR_NAME];
- if (!cur)
- goto free;
- name = blobmsg_data(cur);
- s = avl_find_element(&services, name, s, avl);
- if (s) {
- DEBUG(1, "Update service %s\n", name);
- return service_update(s, msg, tb, add);
- }
- DEBUG(1, "Create service %s\n", name);
- s = service_alloc(name);
- if (!s)
- return UBUS_STATUS_UNKNOWN_ERROR;
- ret = service_update(s, msg, tb, add);
- if (ret)
- goto free;
- avl_insert(&services, &s->avl);
- return 0;
- free:
- free(msg);
- return ret;
- }
- static void
- service_dump(struct service *s, int verbose)
- {
- struct service_instance *in;
- void *c, *i;
- c = blobmsg_open_table(&b, s->name);
- if (avl_is_empty(&s->instances.avl)) {
- blobmsg_close_table(&b, c);
- return;
- }
- i = blobmsg_open_table(&b, "instances");
- vlist_for_each_element(&s->instances, in, node)
- instance_dump(&b, in, verbose);
- blobmsg_close_table(&b, i);
- if (verbose && s->trigger)
- blobmsg_add_blob(&b, s->trigger);
- blobmsg_close_table(&b, c);
- }
- static int
- service_handle_list(struct ubus_context *ctx, struct ubus_object *obj,
- struct ubus_request_data *req, const char *method,
- struct blob_attr *msg)
- {
- struct blob_attr *tb[__SERVICE_LIST_ATTR_MAX];
- struct service *s;
- int verbose = 0;
- blobmsg_parse(service_list_attrs, __SERVICE_LIST_ATTR_MAX, tb, blob_data(msg), blob_len(msg));
- if (tb[SERVICE_LIST_ATTR_VERBOSE] && blobmsg_get_bool(tb[SERVICE_LIST_ATTR_VERBOSE]))
- verbose = 1;
- blob_buf_init(&b, 0);
- avl_for_each_element(&services, s, avl)
- service_dump(s, verbose);
- ubus_send_reply(ctx, req, b.head);
- return 0;
- }
- static int
- service_handle_delete(struct ubus_context *ctx, struct ubus_object *obj,
- struct ubus_request_data *req, const char *method,
- struct blob_attr *msg)
- {
- struct blob_attr *tb[__SERVICE_DEL_ATTR_MAX], *cur;
- struct service *s;
- struct service_instance *in;
- blobmsg_parse(service_del_attrs, __SERVICE_DEL_ATTR_MAX, tb, blob_data(msg), blob_len(msg));
- cur = tb[SERVICE_DEL_ATTR_NAME];
- if (!cur)
- return UBUS_STATUS_NOT_FOUND;
- s = avl_find_element(&services, blobmsg_data(cur), s, avl);
- if (!s)
- return UBUS_STATUS_NOT_FOUND;
- cur = tb[SERVICE_DEL_ATTR_INSTANCE];
- if (!cur) {
- service_delete(s);
- return 0;
- }
- in = vlist_find(&s->instances, blobmsg_data(cur), in, node);
- if (!in) {
- ERROR("instance %s not found\n", (char *) blobmsg_data(cur));
- return UBUS_STATUS_NOT_FOUND;
- }
- vlist_delete(&s->instances, &in->node);
- return 0;
- }
- static int
- service_handle_update(struct ubus_context *ctx, struct ubus_object *obj,
- struct ubus_request_data *req, const char *method,
- struct blob_attr *msg)
- {
- struct blob_attr *tb[__SERVICE_ATTR_MAX], *cur;
- struct service *s;
- blobmsg_parse(service_attrs, __SERVICE_ATTR_MAX, tb, blob_data(msg), blob_len(msg));
- cur = tb[SERVICE_ATTR_NAME];
- if (!cur)
- return UBUS_STATUS_INVALID_ARGUMENT;
- s = avl_find_element(&services, blobmsg_data(cur), s, avl);
- if (!s)
- return UBUS_STATUS_NOT_FOUND;
- if (!strcmp(method, "update_start"))
- vlist_update(&s->instances);
- else
- vlist_flush(&s->instances);
- return 0;
- }
- static int
- service_handle_event(struct ubus_context *ctx, struct ubus_object *obj,
- struct ubus_request_data *req, const char *method,
- struct blob_attr *msg)
- {
- struct blob_attr *tb[__EVENT_MAX];
- if (!msg)
- return UBUS_STATUS_INVALID_ARGUMENT;
- blobmsg_parse(event_policy, __EVENT_MAX, tb, blob_data(msg), blob_len(msg));
- if (!tb[EVENT_TYPE] || !tb[EVENT_DATA])
- return UBUS_STATUS_INVALID_ARGUMENT;
- trigger_event(blobmsg_get_string(tb[EVENT_TYPE]), tb[EVENT_DATA]);
- return 0;
- }
- static struct ubus_method main_object_methods[] = {
- UBUS_METHOD("set", service_handle_set, service_set_attrs),
- UBUS_METHOD("add", service_handle_set, service_set_attrs),
- UBUS_METHOD("list", service_handle_list, service_attrs),
- UBUS_METHOD("delete", service_handle_delete, service_del_attrs),
- UBUS_METHOD("update_start", service_handle_update, service_attrs),
- UBUS_METHOD("update_complete", service_handle_update, service_attrs),
- UBUS_METHOD("event", service_handle_event, event_policy),
- };
- static struct ubus_object_type main_object_type =
- UBUS_OBJECT_TYPE("service", main_object_methods);
- static struct ubus_object main_object = {
- .name = "service",
- .type = &main_object_type,
- .methods = main_object_methods,
- .n_methods = ARRAY_SIZE(main_object_methods),
- };
- void ubus_init_service(struct ubus_context *ctx)
- {
- avl_init(&services, avl_strcmp, false, NULL);
- ubus_add_object(ctx, &main_object);
- }
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