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/*
* Copyright (C) 2016, 2017, 2018 "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.
*/
#pragma once
#include <cstddef>
#include <cstdlib>
#include <cstdarg>
#include <functional>
/* ensure version */
#ifndef AFB_BINDING_VERSION
# define AFB_BINDING_VERSION 3
#endif
/* check the version */
#if AFB_BINDING_VERSION < 3
# error "AFB_BINDING_VERSION must be at least 3"
#endif
/* get C definitions of bindings */
extern "C" {
#include <afb/afb-binding.h>
}
namespace afb {
/*************************************************************************/
/* pre-declaration of classes */
/*************************************************************************/
class arg;
class event;
class req;
/*************************************************************************/
/* declaration of functions */
/*************************************************************************/
int broadcast_event(const char *name, json_object *object = nullptr);
event make_event(const char *name);
void verbose(int level, const char *file, int line, const char * func, const char *fmt, va_list args);
void verbose(int level, const char *file, int line, const char * func, const char *fmt, ...);
int rootdir_get_fd();
int rootdir_open_locale_fd(const char *filename, int flags, const char *locale = nullptr);
int queue_job(void (*callback)(int signum, void *arg), void *argument, void *group, int timeout);
int require_api(const char *apiname, bool initialized = true);
int add_alias(const char *apiname, const char *aliasname);
int verbosity();
bool wants_errors();
bool wants_warnings();
bool wants_notices();
bool wants_infos();
bool wants_debugs();
void call(const char *api, const char *verb, struct json_object *args, void (*callback)(void*closure, int iserror, struct json_object *result, afb_api_t api), void *closure);
template <class T> void call(const char *api, const char *verb, struct json_object *args, void (*callback)(T*closure, int iserror, struct json_object *result, afb_api_t api), T *closure);
bool callsync(const char *api, const char *verb, struct json_object *args, struct json_object *&result);
/*************************************************************************/
/* effective declaration of classes */
/*************************************************************************/
/* events */
class event
{
afb_event_t event_;
public:
event() { invalidate(); }
event(afb_event_t e);
event(const event &other);
event &operator=(const event &other);
operator afb_event_t() const;
afb_event_t operator->() const;
operator bool() const;
bool is_valid() const;
void invalidate();
int broadcast(json_object *object) const;
int push(json_object *object) const;
void unref();
void addref();
const char *name() const;
};
/* args */
class arg
{
struct afb_arg arg_;
public:
arg() = delete;
arg(const struct afb_arg &a);
arg(const arg &other);
arg &operator=(const arg &other);
operator const struct afb_arg&() const;
bool has_name() const;
bool has_value() const;
bool has_path() const;
const char *name() const;
const char *value() const;
const char *path() const;
};
/* req(uest) */
class req
{
afb_req_t req_;
public:
req() = delete;
req(afb_req_t r);
req(const req &other);
req &operator=(const req &other);
operator afb_req_t() const;
afb_req_t operator->() const;
operator bool() const;
bool is_valid() const;
arg get(const char *name) const;
const char *value(const char *name) const;
const char *path(const char *name) const;
json_object *json() const;
void reply(json_object *obj = nullptr, const char *error = nullptr, const char *info = nullptr) const;
void replyf(json_object *obj, const char *error, const char *info, ...) const;
void replyv(json_object *obj, const char *error, const char *info, va_list args) const;
void success(json_object *obj = nullptr, const char *info = nullptr) const;
void successf(json_object *obj, const char *info, ...) const;
void successv(json_object *obj, const char *info, va_list args) const;
void fail(const char *error = "failed", const char *info = nullptr) const;
void failf(const char *error, const char *info, ...) const;
void failv(const char *error, const char *info, va_list args) const;
template < class T > T *context() const;
void addref() const;
void unref() const;
void session_close() const;
bool session_set_LOA(unsigned level) const;
bool subscribe(const event &event) const;
bool unsubscribe(const event &event) const;
void subcall(const char *api, const char *verb, json_object *args, void (*callback)(void *closure, int iserror, json_object *result, afb_req_t req), void *closure) const;
template <class T> void subcall(const char *api, const char *verb, json_object *args, void (*callback)(T *closure, int iserror, json_object *result, afb_req_t req), T *closure) const;
bool subcallsync(const char *api, const char *verb, json_object *args, struct json_object *&result) const;
void subcall(const char *api, const char *verb, json_object *args, int flags, void (*callback)(void *closure, json_object *object, const char *error, const char *info, afb_req_t req), void *closure) const;
template <class T> void subcall(const char *api, const char *verb, json_object *args, int flags, void (*callback)(T *closure, json_object *object, const char *error, const char *info, afb_req_t req), T *closure) const;
bool subcallsync(const char *api, const char *verb, json_object *args, int flags, struct json_object *&object, char *&error, char *&info) const;
void verbose(int level, const char *file, int line, const char * func, const char *fmt, va_list args) const;
void verbose(int level, const char *file, int line, const char * func, const char *fmt, ...) const;
bool has_permission(const char *permission) const;
char *get_application_id() const;
int get_uid() const;
json_object *get_client_info() const;
};
/*************************************************************************/
/* effective declaration of classes */
/*************************************************************************/
/////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////////////////
/*************************************************************************/
/* effective declaration of classes */
/*************************************************************************/
/* events */
inline event::event(afb_event_t e) : event_(e) { }
inline event::event(const event &other) : event_(other.event_) { }
inline event &event::operator=(const event &other) { event_ = other.event_; return *this; }
inline event::operator afb_event_t() const { return event_; }
inline afb_event_t event::operator->() const { return event_; }
inline event::operator bool() const { return is_valid(); }
inline bool event::is_valid() const { return afb_event_is_valid(event_); }
inline void event::invalidate() { event_ = nullptr; }
inline int event::broadcast(json_object *object) const { return afb_event_broadcast(event_, object); }
inline int event::push(json_object *object) const { return afb_event_push(event_, object); }
inline void event::unref() { afb_event_unref(event_); invalidate(); }
inline void event::addref() { afb_event_addref(event_); }
inline const char *event::name() const { return afb_event_name(event_); }
/* args */
inline arg::arg(const struct afb_arg &a) : arg_(a) {}
inline arg::arg(const arg &other) : arg_(other.arg_) {}
inline arg &arg::operator=(const arg &other) { arg_ = other.arg_; return *this; }
inline arg::operator const struct afb_arg&() const { return arg_; }
inline bool arg::has_name() const { return !!arg_.name; }
inline bool arg::has_value() const { return !!arg_.value; }
inline bool arg::has_path() const { return !!arg_.path; }
inline const char *arg::name() const { return arg_.name; }
inline const char *arg::value() const { return arg_.value; }
inline const char *arg::path() const { return arg_.path; }
/* req(uests)s */
inline req::req(afb_req_t r) : req_(r) {}
inline req::req(const req &other) : req_(other.req_) {}
inline req &req::operator=(const req &other) { req_ = other.req_; return *this; }
inline req::operator afb_req_t() const { return req_; }
inline afb_req_t req::operator->() const { return req_; }
inline req::operator bool() const { return is_valid(); }
inline bool req::is_valid() const { return afb_req_is_valid(req_); }
inline arg req::get(const char *name) const { return arg(afb_req_get(req_, name)); }
inline const char *req::value(const char *name) const { return afb_req_value(req_, name); }
inline const char *req::path(const char *name) const { return afb_req_path(req_, name); }
inline json_object *req::json() const { return afb_req_json(req_); }
inline void req::reply(json_object *obj, const char *error, const char *info) const { afb_req_reply(req_, obj, error, info); }
inline void req::replyv(json_object *obj, const char *error, const char *info, va_list args) const { afb_req_reply_v(req_, obj, error, info, args); }
inline void req::replyf(json_object *obj, const char *error, const char *info, ...) const
{
va_list args;
va_start(args, info);
replyv(obj, error, info, args);
va_end(args);
}
inline void req::success(json_object *obj, const char *info) const { reply(obj, nullptr, info); }
inline void req::successv(json_object *obj, const char *info, va_list args) const { replyv(obj, nullptr, info, args); }
inline void req::successf(json_object *obj, const char *info, ...) const
{
va_list args;
va_start(args, info);
successv(obj, info, args);
va_end(args);
}
inline void req::fail(const char *error, const char *info) const { reply(nullptr, error, info); }
inline void req::failv(const char *error, const char *info, va_list args) const { replyv(nullptr, error, info, args); }
inline void req::failf(const char *error, const char *info, ...) const
{
va_list args;
va_start(args, info);
failv(error, info, args);
va_end(args);
}
template < class T >
inline T *req::context() const
{
T* (*creater)(void*) = [](){return new T();};
void (*freer)(T*) = [](T*t){delete t;};
return reinterpret_cast<T*>(afb_req_context(req_, 0,
reinterpret_cast<void *(*)(void*)>(creater),
reinterpret_cast<void (*)(void*)>(freer), nullptr));
}
inline void req::addref() const { afb_req_addref(req_); }
inline void req::unref() const { afb_req_unref(req_); }
inline void req::session_close() const { afb_req_session_close(req_); }
inline bool req::session_set_LOA(unsigned level) const { return !afb_req_session_set_LOA(req_, level); }
inline bool req::subscribe(const event &event) const { return !afb_req_subscribe(req_, event); }
inline bool req::unsubscribe(const event &event) const { return !afb_req_unsubscribe(req_, event); }
inline void req::subcall(const char *api, const char *verb, json_object *args, int flags, void (*callback)(void *closure, json_object *result, const char *error, const char *info, afb_req_t req), void *closure) const
{
afb_req_subcall(req_, api, verb, args, flags, callback, closure);
}
template <class T>
inline void req::subcall(const char *api, const char *verb, json_object *args, int flags, void (*callback)(T *closure, json_object *result, const char *error, const char *info, afb_req_t req), T *closure) const
{
subcall(api, verb, args, flags, reinterpret_cast<void(*)(void*,json_object*,const char*,const char*,afb_req_t)>(callback), reinterpret_cast<void*>(closure));
}
inline bool req::subcallsync(const char *api, const char *verb, json_object *args, int flags, struct json_object *&object, char *&error, char *&info) const
{
return !afb_req_subcall_sync(req_, api, verb, args, flags, &object, &error, &info);
}
inline void req::subcall(const char *api, const char *verb, json_object *args, void (*callback)(void *closure, int iserror, json_object *result, afb_req_t req), void *closure) const
{
afb_req_subcall_legacy(req_, api, verb, args, callback, closure);
}
template <class T>
inline void req::subcall(const char *api, const char *verb, json_object *args, void (*callback)(T *closure, int iserror, json_object *result, afb_req_t req), T *closure) const
{
subcall(api, verb, args, reinterpret_cast<void(*)(void*,int,json_object*,afb_req_t)>(callback), reinterpret_cast<void*>(closure));
}
inline bool req::subcallsync(const char *api, const char *verb, json_object *args, struct json_object *&result) const
{
return !afb_req_subcall_sync_legacy(req_, api, verb, args, &result);
}
inline void req::verbose(int level, const char *file, int line, const char * func, const char *fmt, va_list args) const
{
afb_req_verbose(req_, level, file, line, func, fmt, args);
}
inline void req::verbose(int level, const char *file, int line, const char * func, const char *fmt, ...) const
{
va_list args;
va_start(args, fmt);
afb_req_verbose(req_, level, file, line, func, fmt, args);
va_end(args);
}
inline bool req::has_permission(const char *permission) const
{
return bool(afb_req_has_permission(req_, permission));
}
inline char *req::get_application_id() const
{
return afb_req_get_application_id(req_);
}
inline int req::get_uid() const
{
return afb_req_get_uid(req_);
}
inline json_object *req::get_client_info() const
{
return afb_req_get_client_info(req_);
}
/* commons */
inline int broadcast_event(const char *name, json_object *object)
{ return afb_daemon_broadcast_event(name, object); }
inline event make_event(const char *name)
{ return afb_daemon_make_event(name); }
inline void verbose(int level, const char *file, int line, const char * func, const char *fmt, va_list args)
{ afb_daemon_verbose(level, file, line, func, fmt, args); }
inline void verbose(int level, const char *file, int line, const char * func, const char *fmt, ...)
{ va_list args; va_start(args, fmt); verbose(level, file, line, func, fmt, args); va_end(args); }
inline int rootdir_get_fd()
{ return afb_daemon_rootdir_get_fd(); }
inline int rootdir_open_locale_fd(const char *filename, int flags, const char *locale)
{ return afb_daemon_rootdir_open_locale(filename, flags, locale); }
inline int queue_job(void (*callback)(int signum, void *arg), void *argument, void *group, int timeout)
{ return afb_daemon_queue_job(callback, argument, group, timeout); }
inline int require_api(const char *apiname, bool initialized)
{ return afb_daemon_require_api(apiname, int(initialized)); }
inline int add_alias(const char *apiname, const char *aliasname)
{ return afb_daemon_add_alias(apiname, aliasname); }
inline int logmask()
{ return afb_get_logmask(); }
inline bool wants_errors()
{ return AFB_SYSLOG_MASK_WANT_ERROR(logmask()); }
inline bool wants_warnings()
{ return AFB_SYSLOG_MASK_WANT_WARNING(logmask()); }
inline bool wants_notices()
{ return AFB_SYSLOG_MASK_WANT_NOTICE(logmask()); }
inline bool wants_infos()
{ return AFB_SYSLOG_MASK_WANT_INFO(logmask()); }
inline bool wants_debugs()
{ return AFB_SYSLOG_MASK_WANT_DEBUG(logmask()); }
inline void call(const char *api, const char *verb, struct json_object *args, void (*callback)(void*closure, struct json_object *result, const char *error, const char *info, afb_api_t api), void *closure)
{
afb_service_call(api, verb, args, callback, closure);
}
template <class T>
inline void call(const char *api, const char *verb, struct json_object *args, void (*callback)(T*closure, struct json_object *result, const char *error, const char *info, afb_api_t api), T *closure)
{
afb_service_call(api, verb, args, reinterpret_cast<void(*)(void*,int,json_object*,afb_api_t)>(callback), reinterpret_cast<void*>(closure));
}
inline bool callsync(const char *api, const char *verb, struct json_object *args, struct json_object *&result, char *&error, char *&info)
{
return !!afb_service_call_sync(api, verb, args, &result, &error, &info);
}
/*************************************************************************/
/* declaration of the binding's authorization s */
/*************************************************************************/
constexpr afb_auth auth_no()
{
afb_auth r = { afb_auth_No, 0, 0};
r.type = afb_auth_No;
return r;
}
constexpr afb_auth auth_yes()
{
afb_auth r = { afb_auth_No, 0, 0};
r.type = afb_auth_Yes;
return r;
}
constexpr afb_auth auth_token()
{
afb_auth r = { afb_auth_No, 0, 0};
r.type = afb_auth_Token;
return r;
}
constexpr afb_auth auth_LOA(unsigned loa)
{
afb_auth r = { afb_auth_No, 0, 0};
r.type = afb_auth_LOA;
r.loa = loa;
return r;
}
constexpr afb_auth auth_permission(const char *permission)
{
afb_auth r = { afb_auth_No, 0, 0};
r.type = afb_auth_Permission;
r.text = permission;
return r;
}
constexpr afb_auth auth_not(const afb_auth *other)
{
afb_auth r = { afb_auth_No, 0, 0};
r.type = afb_auth_Not;
r.first = other;
return r;
}
constexpr afb_auth auth_not(const afb_auth &other)
{
return auth_not(&other);
}
constexpr afb_auth auth_or(const afb_auth *first, const afb_auth *next)
{
afb_auth r = { afb_auth_No, 0, 0};
r.type = afb_auth_Or;
r.first = first;
r.next = next;
return r;
}
constexpr afb_auth auth_or(const afb_auth &first, const afb_auth &next)
{
return auth_or(&first, &next);
}
constexpr afb_auth auth_and(const afb_auth *first, const afb_auth *next)
{
afb_auth r = { afb_auth_No, 0, 0};
r.type = afb_auth_And;
r.first = first;
r.next = next;
return r;
}
constexpr afb_auth auth_and(const afb_auth &first, const afb_auth &next)
{
return auth_and(&first, &next);
}
constexpr afb_verb_t verb(
const char *name,
void (*callback)(afb_req_t),
const char *info = nullptr,
uint16_t session = 0,
const afb_auth *auth = nullptr,
bool glob = false,
void *vcbdata = nullptr
)
{
afb_verb_t r = { 0, 0, 0, 0, 0, 0, 0 };
r.verb = name;
r.callback = callback;
r.info = info;
r.session = session;
r.auth = auth;
r.glob = (unsigned)glob;
r.vcbdata = vcbdata;
return r;
}
constexpr afb_verb_t verbend()
{
afb_verb_t r = verb(nullptr, nullptr);
return r;
}
constexpr afb_binding_t binding(
const char *name,
const afb_verb_t *verbs,
const char *info = nullptr,
int (*init)(afb_api_t) = nullptr,
const char *specification = nullptr,
void (*onevent)(afb_api_t, const char*, struct json_object*) = nullptr,
bool noconcurrency = false,
int (*preinit)(afb_api_t) = nullptr,
void *userdata = nullptr
)
{
afb_binding_t r = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
r.api = name;
r.specification = specification;
r.info = info;
r.verbs = verbs;
r.preinit = preinit;
r.init = init;
r.onevent = onevent;
r.noconcurrency = noconcurrency ? 1 : 0;
r.userdata = userdata;
return r;
};
/*************************************************************************/
/*** E N D ***/
/*************************************************************************/
}
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