static ssize_t _read_pktbuf ( timeshift_file_t *tsf, int fd, pktbuf_t **pktbuf )
{
ssize_t r, cnt = 0;
size_t sz;
/* Size */
r = _read_buf(tsf, fd, &sz, sizeof(sz));
if (r < 0) return -1;
if (r != sizeof(sz)) return 0;
cnt += r;
/* Empty And Sanity Check */
if (!sz || sz > 1024 * 1024) {
*pktbuf = NULL;
return cnt;
}
/* Data */
*pktbuf = pktbuf_alloc(NULL, sz);
r = _read_buf(tsf, fd, (*pktbuf)->pb_data, sz);
if (r != sz) {
free((*pktbuf)->pb_data);
free(*pktbuf);
return r < 0 ? -1 : 0;
}
cnt += r;
return cnt;
}
void keyboard_isr(void)
{
uint8_t scancode;
bool make;
scancode = _read_buf();
// is this keystroke a make or a break?
make = !(0x80 & scancode);
// clear the break bit
scancode &= 0x7f;
switch (scancode) {
case LCTRL:
_.ctrl = make;
goto keyboard_isr_end;
case LSHIFT:
_.lshift = make;
goto keyboard_isr_end;
case RSHIFT:
_.rshift = make;
goto keyboard_isr_end;
}
if (!make)
goto keyboard_isr_end;
{
char c;
// map control characters
switch (c = _keymap[scancode][!!_.shift]) {
case 'u':
if (_.ctrl)
c = '\r'; // line kill
break;
case 'l':
if (_.ctrl)
c = 127;
break;
case 127: // DEL -> backspace
c = '\b'; // erase
break;
}
if (c)
console_put_ibuf(c);
}
keyboard_isr_end:
_.shift = _.lshift || _.rshift;
pic_send_eoi(KEYBOARD_IRQ_NUM);
return;
}
int
read_buf(const char *fusepath,
fuse_bufvec **bufp,
size_t size,
off_t offset,
fuse_file_info *ffi)
{
FileInfo *fi = reinterpret_cast<FileInfo*>(ffi->fh);
return _read_buf(fi->fd,
bufp,
size,
offset);
}
static ssize_t _read_msg ( timeshift_file_t *tsf, int fd, streaming_message_t **sm )
{
ssize_t r, cnt = 0;
size_t sz;
streaming_message_type_t type;
int64_t time;
void *data;
int code;
/* Clear */
*sm = NULL;
/* Size */
r = _read_buf(tsf, fd, &sz, sizeof(sz));
if (r < 0) return -1;
if (r != sizeof(sz)) return 0;
cnt += r;
/* EOF */
if (sz == 0) return cnt;
/* Wrong data size */
if (sz > 1024 * 1024) return -1;
/* Type */
r = _read_buf(tsf, fd, &type, sizeof(type));
if (r < 0) return -1;
if (r != sizeof(type)) return 0;
cnt += r;
/* Time */
r = _read_buf(tsf, fd, &time, sizeof(time));
if (r < 0) return -1;
if (r != sizeof(time)) return 0;
cnt += r;
/* Adjust size */
sz -= sizeof(type) + sizeof(time);
cnt += sz;
/* Standard messages */
switch (type) {
/* Unhandled */
case SMT_START:
case SMT_NOSTART:
case SMT_NOSTART_WARN:
case SMT_SERVICE_STATUS:
case SMT_DESCRAMBLE_INFO:
return -1;
break;
/* Code */
case SMT_STOP:
case SMT_EXIT:
case SMT_SPEED:
if (sz != sizeof(code)) return -1;
r = _read_buf(tsf, fd, &code, sz);
if (r != sz) {
if (r < 0) return -1;
return 0;
}
*sm = streaming_msg_create_code(type, code);
break;
/* Data */
case SMT_SKIP:
case SMT_SIGNAL_STATUS:
case SMT_MPEGTS:
case SMT_PACKET:
data = malloc(sz);
r = _read_buf(tsf, fd, data, sz);
if (r != sz) {
free(data);
if (r < 0) return -1;
return 0;
}
if (type == SMT_PACKET) {
th_pkt_t *pkt = data;
pkt->pkt_payload = pkt->pkt_meta = NULL;
pkt->pkt_refcount = 0;
*sm = streaming_msg_create_pkt(pkt);
r = _read_pktbuf(tsf, fd, &pkt->pkt_meta);
if (r < 0) {
streaming_msg_free(*sm);
return r;
}
cnt += r;
r = _read_pktbuf(tsf, fd, &pkt->pkt_payload);
if (r < 0) {
streaming_msg_free(*sm);
return r;
}
cnt += r;
} else {
*sm = streaming_msg_create_data(type, data);
}
(*sm)->sm_time = time;
break;
default:
return -1;
}
/* OK */
return cnt;
}
