44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
#ifndef __IPC_MSG_H__
|
|
#define __IPC_MSG_H__
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <stdint.h>
|
|
|
|
// the underlying communication must always correctly handled by the system
|
|
// (currently: unix sockets)
|
|
|
|
enum msg_types {
|
|
MSG_TYPE_SERVER_CLOSE = 0
|
|
, MSG_TYPE_ERR
|
|
, MSG_TYPE_DATA
|
|
} message_types;
|
|
|
|
struct ipc_message {
|
|
char type;
|
|
uint32_t length;
|
|
char *payload;
|
|
};
|
|
|
|
// used to create msg structure from buffer
|
|
int32_t ipc_message_format_read (struct ipc_message *m, const char *buf, ssize_t msize);
|
|
// used to create buffer from msg structure
|
|
int32_t ipc_message_format_write (const struct ipc_message *m, char **buf, ssize_t *msize);
|
|
|
|
// read a structure msg from fd
|
|
// 1 on a recipient socket close
|
|
int32_t ipc_message_read (int32_t fd, struct ipc_message *m);
|
|
// write a structure msg to fd
|
|
int32_t ipc_message_write (int32_t fd, const struct ipc_message *m);
|
|
|
|
int32_t ipc_message_format (struct ipc_message *m, char type, const char *payload, ssize_t length);
|
|
int32_t ipc_message_format_data (struct ipc_message *m, const char *payload, ssize_t length);
|
|
int32_t ipc_message_format_server_close (struct ipc_message *m);
|
|
|
|
int32_t ipc_message_empty (struct ipc_message *m);
|
|
void ipc_message_print (const struct ipc_message *m);
|
|
|
|
#endif
|