1/* Simple binding of nanopb streams to TCP sockets.
2 */
3
4#include <sys/socket.h>
5#include <sys/types.h>
6#include <pb_encode.h>
7#include <pb_decode.h>
8
9#include "common.h"
10
11static bool write_callback(pb_ostream_t *stream, const uint8_t *buf, size_t count)
12{
13    int fd = (intptr_t)stream->state;
14    return send(fd, buf, count, 0) == count;
15}
16
17static bool read_callback(pb_istream_t *stream, uint8_t *buf, size_t count)
18{
19    int fd = (intptr_t)stream->state;
20    int result;
21
22    result = recv(fd, buf, count, MSG_WAITALL);
23
24    if (result == 0)
25        stream->bytes_left = 0; /* EOF */
26
27    return result == count;
28}
29
30pb_ostream_t pb_ostream_from_socket(int fd)
31{
32    pb_ostream_t stream = {&write_callback, (void*)(intptr_t)fd, SIZE_MAX, 0};
33    return stream;
34}
35
36pb_istream_t pb_istream_from_socket(int fd)
37{
38    pb_istream_t stream = {&read_callback, (void*)(intptr_t)fd, SIZE_MAX};
39    return stream;
40}
41