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src/apps/fido_u2f: add async write

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This commit is contained in:
Jan Pochyla 2018-02-26 16:49:12 +01:00
parent d323aa88f7
commit c568071177
1 changed files with 10 additions and 7 deletions
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17
src/apps/fido_u2f/__init__.py
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@ -229,7 +229,7 @@ class Cmd:
async def read_cmd(iface: io.HID) -> Cmd:
desc_init = frame_init()
desc_cont = frame_cont()
read = loop.select(iface.iface_num())
read = loop.select(iface.iface_num() | io.POLL_READ)
buf = await read
# log.debug(__name__, 'read init %s', buf)
@ -267,14 +267,14 @@ async def read_cmd(iface: io.HID) -> Cmd:
if cfrm.cid != ifrm.cid:
# cont frame for a different channel, reply with BUSY and skip
log.warning(__name__, '_ERR_CHANNEL_BUSY')
send_cmd(cmd_error(cfrm.cid, _ERR_CHANNEL_BUSY), iface)
await send_cmd(cmd_error(cfrm.cid, _ERR_CHANNEL_BUSY), iface)
continue
if cfrm.seq != seq:
# cont frame for this channel, but incorrect seq number, abort
# current msg
log.warning(__name__, '_ERR_INVALID_SEQ')
send_cmd(cmd_error(cfrm.cid, _ERR_INVALID_SEQ), iface)
await send_cmd(cmd_error(cfrm.cid, _ERR_INVALID_SEQ), iface)
return None
datalen += utils.memcpy(data, datalen, cfrm.data, 0, bcnt - datalen)
@ -283,7 +283,7 @@ async def read_cmd(iface: io.HID) -> Cmd:
return Cmd(ifrm.cid, ifrm.cmd, data)
def send_cmd(cmd: Cmd, iface: io.HID) -> None:
async def send_cmd(cmd: Cmd, iface: io.HID) -> None:
init_desc = frame_init()
cont_desc = frame_cont()
offset = 0
@ -302,11 +302,14 @@ def send_cmd(cmd: Cmd, iface: io.HID) -> None:
if offset < datalen:
frm = overlay_struct(buf, cont_desc)
write = loop.select(iface.iface_num() | io.POLL_WRITE)
while offset < datalen:
frm.seq = seq
offset += utils.memcpy(frm.data, 0, cmd.data, offset, datalen)
utime.sleep_ms(1) # FIXME: async write
iface.write(buf)
while True:
await write
if iface.write(buf) > 0:
break
# log.debug(__name__, 'send cont %s', buf)
seq += 1
@ -322,7 +325,7 @@ async def handle_reports(iface: io.HID):
if req is None:
continue
resp = dispatch_cmd(req)
send_cmd(resp, iface)
await send_cmd(resp, iface)
except Exception as e:
log.exception(__name__, e)