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/*
* Copyright (C) 2015, 2016, 2017 "IoT.bzh"
* Author: José Bollo <jose.bollo@iot.bzh>
*
* 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
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <json-c/json.h>
#define AFB_BINDING_VERSION 2
#include <afb/afb-binding.h>
#include "agl-forgerock.h"
static struct afb_event event;
static struct json_object *current_identity;
static const char default_vin[] = "4T1BF1FK5GU260429";
static char *vin;
/***** configuration ********************************************/
static struct json_object *readjson(int fd)
{
char *buffer;
struct stat s;
struct json_object *result = NULL;
int rc;
rc = fstat(fd, &s);
if (rc == 0 && S_ISREG(s.st_mode)) {
buffer = alloca((size_t)(s.st_size)+1);
if (read(fd, buffer, (size_t)s.st_size) == (ssize_t)s.st_size) {
buffer[s.st_size] = 0;
result = json_tokener_parse(buffer);
}
}
close(fd);
return result;
}
static struct json_object *get_global_config(const char *name, const char *locale)
{
int fd = afb_daemon_rootdir_open_locale(name, O_RDONLY, locale);
return fd < 0 ? NULL : readjson(fd);
}
static struct json_object *get_local_config(const char *name)
{
int fd = openat(AT_FDCWD, name, O_RDONLY, 0);
return fd < 0 ? NULL : readjson(fd);
}
static void confsetstr(struct json_object *conf, const char *name, char **value, const char *def)
{
struct json_object *v;
const char *s;
char *p;
s = conf && json_object_object_get_ex(conf, name, &v) ? json_object_get_string(v) : def;
p = *value;
if (s && p != s) {
*value = strdup(s);
free(p);
}
}
static void setconfig(struct json_object *conf)
{
if (conf) {
confsetstr(conf, "vin", &vin, vin ? : default_vin);
agl_forgerock_setconfig(conf);
}
}
static void readconfig()
{
setconfig(get_global_config("config.json", NULL));
setconfig(get_local_config("/etc/agl/identity-agent-config.json"));
setconfig(get_local_config("config.json"));
}
/****************************************************************/
static struct json_object *make_event_object(const char *name, const char *id, const char *nick)
{
struct json_object *object = json_object_new_object();
/* TODO: errors */
json_object_object_add(object, "eventName", json_object_new_string(name));
json_object_object_add(object, "accountid", json_object_new_string(id));
if (nick)
json_object_object_add(object, "nickname", json_object_new_string(nick));
return object;
}
static int send_event_object(const char *name, const char *id, const char *nick)
{
return afb_event_push(event, make_event_object(name, id, nick));
}
static void do_login(struct json_object *desc)
{
struct json_object *object;
/* switching the user */
AFB_INFO("Switching to user %s", desc ? json_object_to_json_string(desc) : "null");
object = current_identity;
current_identity = json_object_get(desc);
json_object_put(object);
if (!json_object_object_get_ex(desc, "name", &object))
object = 0;
send_event_object("login", !object ? "null" : json_object_get_string(object)? : "?", 0);
}
static void do_logout()
{
struct json_object *object;
AFB_INFO("Switching to no user");
object = current_identity;
current_identity = 0;
json_object_put(object);
send_event_object("logout", "null", 0);
}
static void on_forgerock_data(struct json_object *data, const char *error)
{
if (error) {
} else {
}
}
/****************************************************************/
static void subscribe (struct afb_req request)
{
int rc;
rc = afb_req_subscribe(request, event);
if (rc < 0)
afb_req_fail(request, "failed", "subscribtion failed");
else
afb_req_success(request, NULL, NULL);
}
static void unsubscribe (struct afb_req request)
{
afb_req_unsubscribe(request, event);
afb_req_success(request, NULL, NULL);
}
static void login (struct afb_req request)
{
afb_req_fail(request, "not-implemented-yet", NULL);
}
static void logout (struct afb_req request)
{
do_logout();
afb_req_success(request, NULL, NULL);
}
static void get (struct afb_req request)
{
afb_req_success(request, json_object_get(current_identity), NULL);
}
static void success (struct afb_req request)
{
afb_req_success(request, NULL, NULL);
}
static int service_init()
{
int rc;
agl_forgerock_setcb(on_forgerock_data);
event = afb_daemon_make_event("event");
if (!afb_event_is_valid(event))
return -1;
readconfig();
return 0;
}
// NOTE: this sample does not use session to keep test a basic as possible
// in real application most APIs should be protected with AFB_SESSION_CHECK
static const struct afb_verb_v2 verbs[]=
{
{"subscribe" , subscribe , NULL, "subscribe to events" , AFB_SESSION_NONE },
{"unsubscribe", unsubscribe , NULL, "unsubscribe to events" , AFB_SESSION_NONE },
{"login" , login , NULL, "log a user in" , AFB_SESSION_NONE },
{"logout" , logout , NULL, "log the current user out", AFB_SESSION_NONE },
{"get" , get , NULL, "get data" , AFB_SESSION_NONE },
{NULL}
};
const struct afb_binding_v2 afbBindingV2 =
{
.api = "identity",
.specification = NULL,
.info = "AGL identity service",
.verbs = verbs,
.preinit = NULL,
.init = service_init,
.onevent = NULL,
.noconcurrency = 0
};
/* vim: set colorcolumn=80: */
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