static int
check_name_real (const grub_uint8_t *name_at, const grub_uint8_t *head,
const grub_uint8_t *tail, const char *check_with,
int *length, char *set)
{
const char *readable_ptr = check_with;
const grub_uint8_t *ptr;
char *optr = set;
int bytes_processed = 0;
if (length)
*length = 0;
for (ptr = name_at; ptr < tail && bytes_processed < tail - head + 2; )
{
/* End marker. */
if (!*ptr)
{
if (length && *length)
(*length)--;
if (optr && optr != set)
optr--;
if (optr)
*optr = 0;
return !readable_ptr || (*readable_ptr == 0);
}
if (*ptr & 0xc0)
{
bytes_processed += 2;
if (ptr + 1 >= tail)
return 0;
ptr = head + (((ptr[0] & 0x3f) << 8) | ptr[1]);
continue;
}
if (readable_ptr && grub_memcmp (ptr + 1, readable_ptr, *ptr) != 0)
return 0;
if (grub_memchr (ptr + 1, 0, *ptr)
|| grub_memchr (ptr + 1, '.', *ptr))
return 0;
if (readable_ptr)
readable_ptr += *ptr;
if (readable_ptr && *readable_ptr != '.' && *readable_ptr != 0)
return 0;
bytes_processed += *ptr + 1;
if (length)
*length += *ptr + 1;
if (optr)
{
grub_memcpy (optr, ptr + 1, *ptr);
optr += *ptr;
}
if (optr)
*optr++ = '.';
if (readable_ptr && *readable_ptr)
readable_ptr++;
ptr += *ptr + 1;
}
return 0;
}
static grub_err_t
http_receive (grub_net_tcp_socket_t sock __attribute__ ((unused)),
struct grub_net_buff *nb,
void *f)
{
grub_file_t file = f;
http_data_t data = file->data;
grub_err_t err;
while (1)
{
char *ptr = (char *) nb->data;
if ((!data->headers_recv || data->in_chunk_len) && data->current_line)
{
int have_line = 1;
char *t;
ptr = grub_memchr (nb->data, '\n', nb->tail - nb->data);
if (ptr)
ptr++;
else
{
have_line = 0;
ptr = (char *) nb->tail;
}
t = grub_realloc (data->current_line,
data->current_line_len + (ptr - (char *) nb->data));
if (!t)
{
grub_netbuff_free (nb);
grub_net_tcp_close (data->sock, GRUB_NET_TCP_ABORT);
return grub_errno;
}
data->current_line = t;
grub_memcpy (data->current_line + data->current_line_len,
nb->data, ptr - (char *) nb->data);
data->current_line_len += ptr - (char *) nb->data;
if (!have_line)
{
grub_netbuff_free (nb);
return GRUB_ERR_NONE;
}
err = parse_line (file, data, data->current_line,
data->current_line_len);
grub_free (data->current_line);
data->current_line = 0;
data->current_line_len = 0;
if (err)
{
grub_net_tcp_close (data->sock, GRUB_NET_TCP_ABORT);
grub_netbuff_free (nb);
return err;
}
}
while (ptr < (char *) nb->tail && (!data->headers_recv
|| data->in_chunk_len))
{
char *ptr2;
ptr2 = grub_memchr (ptr, '\n', (char *) nb->tail - ptr);
if (!ptr2)
{
data->current_line = grub_malloc ((char *) nb->tail - ptr);
if (!data->current_line)
{
grub_netbuff_free (nb);
grub_net_tcp_close (data->sock, GRUB_NET_TCP_ABORT);
return grub_errno;
}
data->current_line_len = (char *) nb->tail - ptr;
grub_memcpy (data->current_line, ptr, data->current_line_len);
grub_netbuff_free (nb);
return GRUB_ERR_NONE;
}
err = parse_line (file, data, ptr, ptr2 - ptr);
if (err)
{
grub_net_tcp_close (data->sock, GRUB_NET_TCP_ABORT);
grub_netbuff_free (nb);
return err;
}
ptr = ptr2 + 1;
}
if (((char *) nb->tail - ptr) <= 0)
{
grub_netbuff_free (nb);
return GRUB_ERR_NONE;
}
err = grub_netbuff_pull (nb, ptr - (char *) nb->data);
if (err)
{
grub_net_tcp_close (data->sock, GRUB_NET_TCP_ABORT);
grub_netbuff_free (nb);
return err;
}
if (!(data->chunked && (grub_ssize_t) data->chunk_rem
< nb->tail - nb->data))
{
grub_net_put_packet (&file->device->net->packs, nb);
if (file->device->net->packs.count >= 20)
file->device->net->stall = 1;
if (file->device->net->packs.count >= 100)
grub_net_tcp_stall (data->sock);
if (data->chunked)
data->chunk_rem -= nb->tail - nb->data;
return GRUB_ERR_NONE;
}
if (data->chunk_rem)
{
struct grub_net_buff *nb2;
nb2 = grub_netbuff_alloc (data->chunk_rem);
if (!nb2)
return grub_errno;
grub_netbuff_put (nb2, data->chunk_rem);
grub_memcpy (nb2->data, nb->data, data->chunk_rem);
if (file->device->net->packs.count >= 20)
{
file->device->net->stall = 1;
grub_net_tcp_stall (data->sock);
}
grub_net_put_packet (&file->device->net->packs, nb2);
grub_netbuff_pull (nb, data->chunk_rem);
}
data->in_chunk_len = 1;
}
}
