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/*
* Copyright (C) 2015, 2016, 2017 "IoT.bzh"
* Author "Fulup Ar Foll"
* 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 <assert.h>
#include <stdlib.h>
#include <stdint.h>
#include "afb-session.h"
#include "afb-context.h"
static void init_context(struct afb_context *context, struct afb_session *session, const char *token)
{
assert(session != NULL);
/* reset the context for the session */
context->session = session;
context->flags = 0;
context->super = NULL;
context->api_key = NULL;
/* check the token */
if (token != NULL) {
if (afb_session_check_token(session, token))
context->validated = 1;
else
context->invalidated = 1;
}
}
void afb_context_init(struct afb_context *context, struct afb_session *session, const char *token)
{
init_context(context, afb_session_addref(session), token);
}
void afb_context_subinit(struct afb_context *context, struct afb_context *super)
{
context->session = super->session;
context->flags = 0;
context->super = super;
context->api_key = NULL;
context->validated = super->validated;
}
int afb_context_connect(struct afb_context *context, const char *uuid, const char *token)
{
int created;
struct afb_session *session;
session = afb_session_get (uuid, AFB_SESSION_TIMEOUT_DEFAULT, &created);
if (session == NULL)
return -1;
init_context(context, session, token);
if (created) {
context->created = 1;
/* context->refreshing = 1; */
}
return 0;
}
void afb_context_disconnect(struct afb_context *context)
{
if (context->session && !context->super) {
if (context->refreshing && !context->refreshed) {
afb_session_new_token (context->session);
context->refreshed = 1;
}
if (context->closing && !context->closed) {
afb_context_change_loa(context, 0);
afb_context_set(context, NULL, NULL);
context->closed = 1;
}
afb_session_unref(context->session);
context->session = NULL;
}
}
const char *afb_context_sent_token(struct afb_context *context)
{
if (context->session == NULL || context->closing || context->super)
return NULL;
if (!context->refreshing)
return NULL;
if (!context->refreshed) {
afb_session_new_token (context->session);
context->refreshed = 1;
}
return afb_session_token(context->session);
}
const char *afb_context_uuid(struct afb_context *context)
{
return context->session ? afb_session_uuid(context->session) : "";
}
const char *afb_context_sent_uuid(struct afb_context *context)
{
if (context->session == NULL || context->closing || context->super)
return NULL;
if (!context->created)
return NULL;
return afb_session_uuid(context->session);
}
void *afb_context_make(struct afb_context *context, int replace, void *(*make_value)(void *closure), void (*free_value)(void *item), void *closure)
{
assert(context->session != NULL);
return afb_session_cookie(context->session, context->api_key, make_value, free_value, closure, replace);
}
void *afb_context_get(struct afb_context *context)
{
assert(context->session != NULL);
return afb_session_get_cookie(context->session, context->api_key);
}
int afb_context_set(struct afb_context *context, void *value, void (*free_value)(void*))
{
assert(context->session != NULL);
return afb_session_set_cookie(context->session, context->api_key, value, free_value);
}
void afb_context_close(struct afb_context *context)
{
context->closing = 1;
}
void afb_context_refresh(struct afb_context *context)
{
if (context->super)
afb_context_refresh(context->super);
else {
assert(context->validated);
context->refreshing = 1;
if (!context->refreshed) {
afb_session_new_token (context->session);
context->refreshed = 1;
}
}
}
int afb_context_check(struct afb_context *context)
{
if (context->super)
return afb_context_check(context);
return context->validated;
}
int afb_context_check_loa(struct afb_context *context, unsigned loa)
{
return afb_context_get_loa(context) >= loa;
}
static inline const void *loa_key(struct afb_context *context)
{
return (const void*)(1+(intptr_t)(context->api_key));
}
static inline void *loa2ptr(unsigned loa)
{
return (void*)(intptr_t)loa;
}
static inline unsigned ptr2loa(void *ptr)
{
return (unsigned)(intptr_t)ptr;
}
int afb_context_change_loa(struct afb_context *context, unsigned loa)
{
if (!context->validated || loa > 7)
return 0;
return 0 <= afb_session_set_cookie(context->session, loa_key(context), loa2ptr(loa), NULL);
}
unsigned afb_context_get_loa(struct afb_context *context)
{
assert(context->session != NULL);
return ptr2loa(afb_session_get_cookie(context->session, loa_key(context)));
}
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