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/*
* Copyright (C) 2015, 2016 "IoT.bzh"
* Author "Fulup Ar Foll"
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <json-c/json.h>
#include <afb/afb-plugin.h>
#include "utils-jbus.h"
static const char _added_[] = "added";
static const char _auto_[] = "auto";
static const char _continue_[] = "continue";
static const char _changed_[] = "changed";
static const char _detail_[] = "detail";
static const char _id_[] = "id";
static const char _install_[] = "install";
static const char _local_[] = "local";
static const char _mode_[] = "mode";
static const char _remote_[] = "remote";
static const char _runid_[] = "runid";
static const char _runnables_[] = "runnables";
static const char _runners_[] = "runners";
static const char _start_[] = "start";
static const char _state_[] = "state";
static const char _stop_[] = "stop";
static const char _terminate_[] = "terminate";
static const char _uninstall_[] = "uninstall";
static const char _uri_[] = "uri";
static const struct AFB_interface *afb_interface;
static struct jbus *jbus;
struct memo
{
struct afb_req request;
const char *method;
};
static struct memo *make_memo(struct afb_req request, const char *method)
{
struct memo *memo = malloc(sizeof *memo);
if (memo != NULL) {
memo->request = request;
memo->method = method;
afb_req_addref(request);
}
return memo;
}
static void application_list_changed(const char *data, void *closure)
{
afb_daemon_broadcast_event(afb_interface->daemon, "application-list-changed", NULL);
}
static struct json_object *embed(const char *tag, struct json_object *obj)
{
struct json_object *result;
if (obj == NULL)
result = NULL;
else if (!tag)
result = obj;
else {
result = json_object_new_object();
if (result == NULL) {
/* can't embed */
result = obj;
}
else {
/* TODO why is json-c not returning a status? */
json_object_object_add(result, tag, obj);
}
}
return result;
}
static void embed_call_void_callback(int status, struct json_object *obj, struct memo *memo)
{
if (afb_interface->verbosity)
fprintf(stderr, "(afm-main-plugin) %s(true) -> %s\n", memo->method,
obj ? json_object_to_json_string(obj) : "NULL");
if (obj == NULL) {
afb_req_fail(memo->request, "failed", "framework daemon failure");
} else {
obj = json_object_get(obj);
obj = embed(memo->method, obj);
if (obj == NULL) {
afb_req_fail(memo->request, "failed", "framework daemon failure");
} else {
afb_req_success(memo->request, obj, NULL);
}
}
afb_req_unref(memo->request);
free(memo);
}
static void embed_call_void(struct afb_req request, const char *method)
{
struct memo *memo = make_memo(request, method);
if (memo == NULL)
afb_req_fail(request, "failed", "out of memory");
else if (jbus_call_sj(jbus, method, "true", (void*)embed_call_void_callback, memo) < 0) {
afb_req_fail(request, "failed", "dbus failure");
free(memo);
}
}
static void call_appid_callback(int status, struct json_object *obj, struct memo *memo)
{
if (afb_interface->verbosity)
fprintf(stderr, "(afm-main-plugin) %s -> %s\n", memo->method,
obj ? json_object_to_json_string(obj) : "NULL");
if (obj == NULL) {
afb_req_fail(memo->request, "failed", "framework daemon failure");
} else {
obj = json_object_get(obj);
afb_req_success(memo->request, obj, NULL);
}
afb_req_unref(memo->request);
free(memo);
}
static void call_appid(struct afb_req request, const char *method)
{
struct memo *memo;
char *sid;
const char *id = afb_req_value(request, _id_);
if (id == NULL) {
afb_req_fail(request, "bad-request", "missing 'id'");
return;
}
memo = make_memo(request, method);
if (asprintf(&sid, "\"%s\"", id) <= 0 || memo == NULL) {
afb_req_fail(request, "server-error", "out of memory");
free(memo);
return;
}
if (jbus_call_sj(jbus, method, sid, (void*)call_appid_callback, memo) < 0) {
afb_req_fail(request, "failed", "dbus failure");
free(memo);
}
free(sid);
}
static void call_runid(struct afb_req request, const char *method)
{
struct json_object *obj;
const char *id = afb_req_value(request, _runid_);
if (id == NULL) {
afb_req_fail(request, "bad-request", "missing 'runid'");
return;
}
obj = jbus_call_sj_sync(jbus, method, id);
if (afb_interface->verbosity)
fprintf(stderr, "(afm-main-plugin) %s(%s) -> %s\n", method, id,
obj ? json_object_to_json_string(obj) : "NULL");
if (obj == NULL) {
afb_req_fail(request, "failed", "framework daemon failure");
return;
}
obj = json_object_get(obj);
afb_req_success(request, obj, NULL);
}
/************************** entries ******************************/
static void runnables(struct afb_req request)
{
embed_call_void(request, _runnables_);
}
static void detail(struct afb_req request)
{
call_appid(request, _detail_);
}
static void start(struct afb_req request)
{
struct json_object *obj;
const char *id, *mode;
char *query;
int rc;
/* get the id */
id = afb_req_value(request, _id_);
if (id == NULL) {
afb_req_fail(request, "bad-request", "missing 'id'");
return;
}
/* get the mode */
mode = afb_req_value(request, _mode_);
if (mode == NULL || !strcmp(mode, _auto_)) {
mode = afb_interface->mode == AFB_MODE_REMOTE ? _remote_ : _local_;
}
/* create the query */
rc = asprintf(&query, "{\"id\":\"%s\",\"mode\":\"%s\"}", id, mode);
if (rc < 0) {
afb_req_fail(request, "server-error", "out of memory");
return;
}
/* calls the service */
obj = jbus_call_sj_sync(jbus, _start_, query);
if (afb_interface->verbosity)
fprintf(stderr, "(afm-main-plugin) start(%s) -> %s\n", query,
obj ? json_object_to_json_string(obj) : "NULL");
free(query);
/* check status */
obj = json_object_get(obj);
if (obj == NULL) {
afb_req_fail(request, "failed", "framework daemon failure");
return;
}
/* embed if needed */
if (json_object_get_type(obj) == json_type_int)
obj = embed(_runid_, obj);
afb_req_success(request, obj, NULL);
}
static void terminate(struct afb_req request)
{
call_runid(request, _terminate_);
}
static void stop(struct afb_req request)
{
call_runid(request, _stop_);
}
static void continue_(struct afb_req request)
{
call_runid(request, _continue_);
}
static void runners(struct afb_req request)
{
embed_call_void(request, _runners_);
}
static void state(struct afb_req request)
{
call_runid(request, _state_);
}
static void install(struct afb_req request)
{
struct json_object *obj, *added;
char *query;
const char *filename;
struct afb_arg arg;
/* get the argument */
arg = afb_req_get(request, "widget");
filename = arg.path;
if (filename == NULL) {
afb_req_fail(request, "bad-request", "missing 'widget' file");
return;
}
/* makes the query */
if (0 >= asprintf(&query, "\"%s\"", filename)) {
afb_req_fail(request, "server-error", "out of memory");
return;
}
obj = jbus_call_sj_sync(jbus, _install_, query);
if (afb_interface->verbosity)
fprintf(stderr, "(afm-main-plugin) install(%s) -> %s\n", query,
obj ? json_object_to_json_string(obj) : "NULL");
free(query);
/* check status */
if (obj == NULL) {
afb_req_fail(request, "failed", "framework daemon failure");
return;
}
/* embed if needed */
if (json_object_object_get_ex(obj, _added_, &added))
obj = added;
obj = json_object_get(obj);
obj = embed(_id_, obj);
afb_req_success(request, obj, NULL);
}
static void uninstall(struct afb_req request)
{
call_appid(request, _uninstall_);
}
static const struct AFB_verb_desc_v1 verbs[] =
{
{_runnables_, AFB_SESSION_CHECK, runnables, "Get list of runnable applications"},
{_detail_ , AFB_SESSION_CHECK, detail, "Get the details for one application"},
{_start_ , AFB_SESSION_CHECK, start, "Start an application"},
{_terminate_, AFB_SESSION_CHECK, terminate, "Terminate a running application"},
{_stop_ , AFB_SESSION_CHECK, stop, "Stop (pause) a running application"},
{_continue_ , AFB_SESSION_CHECK, continue_, "Continue (resume) a stopped application"},
{_runners_ , AFB_SESSION_CHECK, runners, "Get the list of running applications"},
{_state_ , AFB_SESSION_CHECK, state, "Get the state of a running application"},
{_install_ , AFB_SESSION_CHECK, install, "Install an application using a widget file"},
{_uninstall_, AFB_SESSION_CHECK, uninstall, "Uninstall an application"},
{ NULL, 0, NULL, NULL }
};
static const struct AFB_plugin plug_desc = {
.type = AFB_PLUGIN_VERSION_1,
.v1 = {
.info = "Application Framework Master Service",
.prefix = "afm-main",
.verbs = verbs
}
};
const struct AFB_plugin *pluginAfbV1Register(const struct AFB_interface *itf)
{
int rc;
struct sd_bus *sbus;
/* records the interface */
assert (afb_interface == NULL);
afb_interface = itf;
/* creates the jbus for accessing afm-user-daemon */
sbus = afb_daemon_get_user_bus(itf->daemon);
if (sbus == NULL)
return NULL;
jbus = create_jbus(sbus, "/org/AGL/afm/user");
if (jbus == NULL)
return NULL;
/* records the signal handler */
rc = jbus_on_signal_s(jbus, _changed_, application_list_changed, NULL);
if (rc < 0) {
jbus_unref(jbus);
return NULL;
}
return &plug_desc;
}
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