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/*
* Copyright (C) 2015-2020 "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 <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <limits.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "verbose.h"
#include "afb-api-ws.h"
#include "afb-api-so.h"
#include "afb-apiset.h"
#include "afb-autoset.h"
static void cleanup(void *closure)
{
struct afb_apiset *call_set = closure;
afb_apiset_unref(call_set);
}
static int onlack(void *closure, struct afb_apiset *set, const char *name, int (*create)(const char *path, struct afb_apiset *declare_set, struct afb_apiset *call_set))
{
struct afb_apiset *call_set = closure;
char *path;
const char *base;
size_t lbase, lname;
base = afb_apiset_name(set);
lbase = strlen(base);
lname = strlen(name);
path = alloca(2 + lbase + lname);
memcpy(path, base, lbase);
path[lbase] = '/';
memcpy(&path[lbase + 1], name, lname + 1);
return create(path, set, call_set);
}
static int add(const char *path, struct afb_apiset *declare_set, struct afb_apiset *call_set, int (*callback)(void *, struct afb_apiset *, const char*))
{
struct afb_apiset *ownset;
/* create a sub-apiset */
ownset = afb_apiset_create_subset_last(declare_set, path, 3600);
if (!ownset) {
ERROR("Can't create apiset autoset-ws %s", path);
return -1;
}
/* set the onlack behaviour on this set */
afb_apiset_onlack_set(ownset, callback, afb_apiset_addref(call_set), cleanup);
return 0;
}
/*******************************************************************/
static int create_ws(const char *path, struct afb_apiset *declare_set, struct afb_apiset *call_set)
{
return afb_api_ws_add_client(path, declare_set, call_set, 0) >= 0;
}
static int onlack_ws(void *closure, struct afb_apiset *set, const char *name)
{
return onlack(closure, set, name, create_ws);
}
int afb_autoset_add_ws(const char *path, struct afb_apiset *declare_set, struct afb_apiset *call_set)
{
return add(path, declare_set, call_set, onlack_ws);
}
/*******************************************************************/
#if WITH_DYNAMIC_BINDING
static int create_so(const char *path, struct afb_apiset *declare_set, struct afb_apiset *call_set)
{
return afb_api_so_add_binding(path, declare_set, call_set) >= 0;
}
static int onlack_so(void *closure, struct afb_apiset *set, const char *name)
{
return onlack(closure, set, name, create_so);
}
int afb_autoset_add_so(const char *path, struct afb_apiset *declare_set, struct afb_apiset *call_set)
{
return add(path, declare_set, call_set, onlack_so);
}
#endif
/*******************************************************************/
static int create_any(const char *path, struct afb_apiset *declare_set, struct afb_apiset *call_set)
{
int rc;
struct stat st;
char sockname[PATH_MAX + 7];
rc = stat(path, &st);
if (!rc) {
switch(st.st_mode & S_IFMT) {
#if WITH_DYNAMIC_BINDING
case S_IFREG:
rc = afb_api_so_add_binding(path, declare_set, call_set);
break;
#endif
case S_IFSOCK:
snprintf(sockname, sizeof sockname, "unix:%s", path);
rc = afb_api_ws_add_client(sockname, declare_set, call_set, 0);
break;
default:
NOTICE("Unexpected autoset entry: %s", path);
rc = -1;
break;
}
}
return rc >= 0;
}
static int onlack_any(void *closure, struct afb_apiset *set, const char *name)
{
return onlack(closure, set, name, create_any);
}
int afb_autoset_add_any(const char *path, struct afb_apiset *declare_set, struct afb_apiset *call_set)
{
return add(path, declare_set, call_set, onlack_any);
}
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