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import struct
import socket
from ppadb.protocol import Protocol
from ppadb.utils.logger import AdbLogging
logger = AdbLogging.get_logger(__name__)
class Connection:
def __init__(self, host='localhost', port=5037, timeout=None):
self.host = host
self.port = port
self.timeout = timeout
self.socket = None
def __enter__(self):
return self
def __exit__(self, type, value, traceback):
self.close()
def connect(self):
logger.debug("Connect to adb server - {}:{}".format(self.host, self.port))
self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
l_onoff = 1
l_linger = 0
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_LINGER, struct.pack('ii', l_onoff, l_linger))
if self.timeout:
self.socket.settimeout(self.timeout)
try:
self.socket.connect((self.host, self.port))
except socket.error as e:
self.close()
raise RuntimeError("ERROR: connecting to {}:{} {}.\nIs adb running on your computer?".format(
self.host,
self.port,
e
))
return self.socket
def close(self):
if not self.socket:
return
logger.debug("Connection closed...")
try:
self.socket.close()
except OSError:
pass
##############################################################################################################
#
# Send command & Receive command result
#
##############################################################################################################
def _recv(self, length):
return self.socket.recv(length)
def _recv_into(self, length):
recv = bytearray(length)
view = memoryview(recv)
self.socket.recv_into(view)
return recv
def _send(self, data):
self.socket.send(data)
def receive(self):
nob = int(self._recv(4).decode('utf-8'), 16)
recv = self._recv_into(nob)
return recv.decode('utf-8')
def send(self, msg):
msg = Protocol.encode_data(msg)
logger.debug(msg)
self._send(msg)
return self._check_status()
def _check_status(self):
recv = self._recv(4).decode('utf-8')
if recv != Protocol.OKAY:
error = self._recv(1024).decode('utf-8')
raise RuntimeError("ERROR: {} {}".format(repr(recv), error))
return True
def check_status(self):
return self._check_status()
##############################################################################################################
#
# Socket read/write
#
##############################################################################################################
def read_all(self):
data = bytearray()
while True:
recv = self._recv(4096)
if not recv:
break
data += recv
return data
def read(self, length=0):
data = self._recv(length)
return data
def write(self, data):
self._send(data)
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