Python手机开发调用DLL实现部分ADB功能-乾颐堂
近期学了一点Python，然后正好有一个手机同步工具方面的预研工作要完成。
要实现PC与手机的通信，首先要找到他们的通信协议，还好的是Android有完善的协议：ADB
ADB的代码是开源的，而且支持Windows平台，有现成的DLL可以调用：AdbWinApi.dll，AdbWinUsbApi.dll
好了，可以用VC搞定，但我想用Python试一下，于是开始了苦逼的查资料+实验的过程。
实验过程就不多说了，由于上面的两个DLL都是用C实现的，提供的头文件也是C语言的，所以有了下面这个python测试程序（Python2.7）：
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import ctypes
#自定义的GUID结构，有兴趣的可以自己研究用uuid模块 class GUID(ctypes.Structure):
_fields_ = [("Data1", ctypes.c_ulong),
("Data2", ctypes.c_ushort),
("Data3", ctypes.c_ushort),
("Data4", ctypes.c_ubyte*8)]
#自己定义的一个结构体，便于使用DLL接口 class AdbInterfaceInfo(ctypes.Structure):
_fields_ = [("class_id", GUID),
("flags", ctypes.c_ulong),
("device_name", ctypes.c_wchar*800)]
def strGUID(GUID):
string = \'\'
string = string + \'%x\' % buff.class_id.Data1 + \'-%x\' % buff.class_id.Data2 + \'-%x\' % buff.class_id.Data3
string = string + \'-%x\' % buff.class_id.Data4[0]
string = string + \'%x\' % buff.class_id.Data4[1]
string = string + \'%x\' % buff.class_id.Data4[2]
string = string + \'%x\' % buff.class_id.Data4[3]
string = string + \'%x\' % buff.class_id.Data4[4]
string = string + \'%x\' % buff.class_id.Data4[5]
string = string + \'%x\' % buff.class_id.Data4[6]
string = string + \'%x\' % buff.class_id.Data4[7]
return string
dll = ctypes.cdll.LoadLibrary(\'AdbWinApi.dll\')
usb_class_id = GUID(0xF72FE0D4, 0xCBCB, 0x407d, (0x88, 0x14, 0x9e, 0xd6, 0x73, 0xd0, 0xdd, 0x6b))
enum_handle = dll.AdbEnumInterfaces(usb_class_id, ctypes.c_bool(\'true\'), ctypes.c_bool(\'true\'), ctypes.c_bool(\'true\'))
while(1):
buff = AdbInterfaceInfo()
size = ctypes.c_ulong(ctypes.sizeof(buff))
status = dll.AdbNextInterface(enum_handle, ctypes.byref(buff), ctypes.byref(size))
if status==1:
#print "GUID = " + strGUID(buff.class_id)
#print "status = " + str(status)
#print "Name = " + str(buff.device_name)
hAdbApi = dll.AdbCreateInterfaceByName(buff.device_name);
if hAdbApi == 0:
print \'AdbCreateInterfaceByName Fail\'
else:
serial = \' \'*128
pserial = ctypes.c_char_p()
pserial.value = serial
serial_len = ctypes.c_ulong(len(serial))
ret = dll.AdbGetSerialNumber(hAdbApi, pserial, ctypes.byref(serial_len), ctypes.c_bool(\'false\'));
if ret == 1:
print \'Device Name: \' + \'%s\'% serial
else:
print \'Get Device Name Fail\'
else:
print \'Finished\'
break
import ctypes
#自定义的GUID结构，有兴趣的可以自己研究用uuid模块 class GUID(ctypes.Structure):
_fields_ = [("Data1", ctypes.c_ulong),
("Data2", ctypes.c_ushort),
("Data3", ctypes.c_ushort),
("Data4", ctypes.c_ubyte*8)]
#自己定义的一个结构体，便于使用DLL接口 class AdbInterfaceInfo(ctypes.Structure):
_fields_ = [("class_id", GUID),
("flags", ctypes.c_ulong),
("device_name", ctypes.c_wchar*800)]
def strGUID(GUID):
string = \'\'
string = string + \'%x\' % buff.class_id.Data1 + \'-%x\' % buff.class_id.Data2 + \'-%x\' % buff.class_id.Data3
string = string + \'-%x\' % buff.class_id.Data4[0]
string = string + \'%x\' % buff.class_id.Data4[1]
string = string + \'%x\' % buff.class_id.Data4[2]
string = string + \'%x\' % buff.class_id.Data4[3]
string = string + \'%x\' % buff.class_id.Data4[4]
string = string + \'%x\' % buff.class_id.Data4[5]
string = string + \'%x\' % buff.class_id.Data4[6]
string = string + \'%x\' % buff.class_id.Data4[7]
return string
dll = ctypes.cdll.LoadLibrary(\'AdbWinApi.dll\')
usb_class_id = GUID(0xF72FE0D4, 0xCBCB, 0x407d, (0x88, 0x14, 0x9e, 0xd6, 0x73, 0xd0, 0xdd, 0x6b))
enum_handle = dll.AdbEnumInterfaces(usb_class_id, ctypes.c_bool(\'true\'), ctypes.c_bool(\'true\'), ctypes.c_bool(\'true\'))
while(1):
buff = AdbInterfaceInfo()
size = ctypes.c_ulong(ctypes.sizeof(buff))
status = dll.AdbNextInterface(enum_handle, ctypes.byref(buff), ctypes.byref(size))
if status==1:
#print "GUID = " + strGUID(buff.class_id)
#print "status = " + str(status)
#print "Name = " + str(buff.device_name)
hAdbApi = dll.AdbCreateInterfaceByName(buff.device_name);
if hAdbApi == 0:
print \'AdbCreateInterfaceByName Fail\'
else:
serial = \' \'*128
pserial = ctypes.c_char_p()
pserial.value = serial
serial_len = ctypes.c_ulong(len(serial))
ret = dll.AdbGetSerialNumber(hAdbApi, pserial, ctypes.byref(serial_len), ctypes.c_bool(\'false\'));
if ret == 1:
print \'Device Name: \' + \'%s\'% serial
else:
print \'Get Device Name Fail\'
else:
print \'Finished\'
break
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上面这个简单的Python代码，可以通过AdbWinApi.dll和AdbWinUsbApi.dll这两个DLL来找到你PC上正连接着的Android设备。
只调用了3个DLL接口，但目的已经达到，可以得出下面的结论：
使用Python调用DLL的方式来实现ADB工具是可行的，当然麻烦是不会少的了。
写在最后，Python调用C写的DLL还是比较麻烦的，特别是参数传递，尤其是指针的处理，这方面还得依靠ctypes模块。。。
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