17ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen/* Simple binding of nanopb streams to TCP sockets.
27ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen */
37ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen
47ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen#include <sys/socket.h>
57ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen#include <sys/types.h>
67ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen#include <pb_encode.h>
77ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen#include <pb_decode.h>
87ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen
97ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen#include "common.h"
107ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen
117ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohenstatic bool write_callback(pb_ostream_t *stream, const uint8_t *buf, size_t count)
127ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen{
137ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen    int fd = (intptr_t)stream->state;
147ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen    return send(fd, buf, count, 0) == count;
157ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen}
167ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen
177ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohenstatic bool read_callback(pb_istream_t *stream, uint8_t *buf, size_t count)
187ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen{
197ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen    int fd = (intptr_t)stream->state;
207ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen    int result;
217ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen
227ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen    result = recv(fd, buf, count, MSG_WAITALL);
237ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen
247ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen    if (result == 0)
257ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen        stream->bytes_left = 0; /* EOF */
267ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen
277ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen    return result == count;
287ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen}
297ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen
307ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohenpb_ostream_t pb_ostream_from_socket(int fd)
317ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen{
327ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen    pb_ostream_t stream = {&write_callback, (void*)(intptr_t)fd, SIZE_MAX, 0};
337ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen    return stream;
347ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen}
357ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen
367ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohenpb_istream_t pb_istream_from_socket(int fd)
377ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen{
387ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen    pb_istream_t stream = {&read_callback, (void*)(intptr_t)fd, SIZE_MAX};
397ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen    return stream;
407ef855e462b9a18b7d330e4b40f350164a6ad9daEtan Cohen}
41