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/* SPDX-License-Identifier: ISC */
#include <sys/types.h>
#include <sys/socket.h>
#include <stdint.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "initsock.h"
static int read_retry(int fd, void *buffer, size_t size)
{
ssize_t ret;
retry:
ret = read(fd, buffer, size);
if (ret < 0) {
if (errno == EINTR)
goto retry;
return -1;
}
if ((size_t)ret < size) {
errno = EPROTO;
return 0;
}
return 1;
}
static char *read_string(int fd)
{
uint8_t size_raw[2];
char *buffer;
size_t len;
int ret;
ret = read_retry(fd, size_raw, 2);
if (ret <= 0)
return NULL;
len = (((size_t)size_raw[0]) << 8) | (size_t)size_raw[1];
buffer = malloc(len + 1);
if (buffer == NULL)
return NULL;
if (len > 0) {
ret = read_retry(fd, buffer, len);
if (ret <= 0) {
ret = errno;
free(buffer);
errno = ret;
return NULL;
}
}
buffer[len] = '\0';
return buffer;
}
int init_socket_recv_status(int fd, init_status_response_t *resp)
{
uint8_t info[2];
memset(resp, 0, sizeof(*resp));
if (read_retry(fd, info, 2) <= 0)
return -1;
resp->state = info[0];
resp->exit_status = info[1];
if (resp->state == ESS_NONE)
return 0;
resp->filename = read_string(fd);
if (resp->filename == NULL)
return -1;
resp->service_name = read_string(fd);
if (resp->service_name == NULL)
return -1;
return 0;
}
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