84 lines
2.0 KiB
C++
84 lines
2.0 KiB
C++
|
#pragma once
|
||
|
|
|
||
|
|
#include "common.hpp"
|
||
|
|
|
||
|
|
POLYBAR_NS
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Defines the binary message format for IPC communications over the IPC socket.
|
||
|
|
*
|
||
|
|
* This is an internal API, do not connect to the socket using 3rd party programs, always use `polybar-msg`.
|
||
|
|
*/
|
||
|
|
namespace ipc {
|
||
|
|
/**
|
||
|
|
* Magic string prefixed to every ipc message.
|
||
|
|
*
|
||
|
|
* THIS MUST NEVER CHANGE.
|
||
|
|
*/
|
||
|
|
static constexpr std::array<uint8_t, 7> MAGIC = {'p', 'o', 'l', 'y', 'i', 'p', 'c'};
|
||
|
|
static const string MAGIC_STR = string(reinterpret_cast<const char*>(MAGIC.data()), MAGIC.size());
|
||
|
|
|
||
|
|
static constexpr uint8_t VERSION = 0;
|
||
|
|
|
||
|
|
using type_t = uint8_t;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Message type indicating success.
|
||
|
|
*/
|
||
|
|
static constexpr type_t TYPE_OK = 0;
|
||
|
|
static constexpr type_t TYPE_ERR = 255;
|
||
|
|
|
||
|
|
union header {
|
||
|
|
struct header_data {
|
||
|
|
uint8_t magic[MAGIC.size()];
|
||
|
|
/**
|
||
|
|
* Version number of the message format.
|
||
|
|
*/
|
||
|
|
uint8_t version;
|
||
|
|
/**
|
||
|
|
* Size of the following message in bytes
|
||
|
|
*/
|
||
|
|
uint32_t size;
|
||
|
|
/**
|
||
|
|
* Type of the message that follows.
|
||
|
|
*
|
||
|
|
* Meaning of the values depend on version.
|
||
|
|
* Only TYPE_OK(0) indicate success and TYPE_ERR(255) always indicates an error, in which case the entire message
|
||
|
|
* is a string.
|
||
|
|
*/
|
||
|
|
type_t type;
|
||
|
|
} __attribute__((packed)) s;
|
||
|
|
uint8_t d[sizeof(header_data)];
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Size of the standard header shared by all versions.
|
||
|
|
*
|
||
|
|
* THIS MUST NEVER CHANGE.
|
||
|
|
*/
|
||
|
|
static constexpr size_t HEADER_SIZE = 13;
|
||
|
|
static_assert(sizeof(header) == HEADER_SIZE, "");
|
||
|
|
static_assert(sizeof(header::header_data) == HEADER_SIZE, "");
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Definitions for version 0 of the IPC message format.
|
||
|
|
*
|
||
|
|
* The format is very simple. The header defines the type (cmd or action) and the payload is the message for that type
|
||
|
|
* as a string.
|
||
|
|
*/
|
||
|
|
namespace v0 {
|
||
|
|
enum class ipc_type : type_t {
|
||
|
|
/**
|
||
|
|
* Message type for ipc commands
|
||
|
|
*/
|
||
|
|
CMD = 1,
|
||
|
|
/**
|
||
|
|
* Message type for ipc module actions
|
||
|
|
*/
|
||
|
|
ACTION = 2,
|
||
|
|
};
|
||
|
|
}
|
||
|
|
} // namespace ipc
|
||
|
|
|
||
|
|
POLYBAR_NS_END
|