def inspect(ctxt, oid):
'inspect an object'
ctxt.sess.suspend()
try:
oid = long(oid)
rtval = find_object(ctxt, oid)
if rtval is None:
andbug.screed.section('object <%s> not found' % oid)
else:
obj, thread = rtval
with andbug.screed.section(
'object <%s> %s in %s' %
(str(obj.oid), str(obj.jni), str(thread))):
log.debug(
"study", "In inspect obj.oid=" + str(obj.oid) + "\t jni=" +
str(obj.jni) + "\t thread=" + str(thread))
for k, v in obj.fields.items():
log.debug(
"study", "In inspect k=" + str(k) + "\t v=" + str(v) +
"\t type=" + type(v).__name__)
andbug.screed.item('%s=%s <%s>' % (k, v, type(v).__name__))
except ValueError:
print('!! error, invalid oid param. expecting <long> and got <%s>.' %
type(oid).__name__)
finally:
ctxt.sess.resume()
def adb(*args):
log.debug(adb, ' '.join(map(str, args)))
try:
return sh(seq("adb", *args))
except OSError as err:
raise ConfigError(
'could not find "adb" from the Android SDK in your PATH')
def find_object(ctxt, oid):
for t in ctxt.sess.threads():
for f in t.frames:
for k, v in f.values.items():
log.debug("study", "In inspect.find_object k=" + str(k) + "\t v=" + str(v))
if type(v) is andbug.vm.Object and v.oid == oid:
return (v, t) #v：变量的值， t：所在的线程信息
return None
def processResponse(self, ident, code, data):
'internal to the i/o thread w/ recv ctrl; processes incoming response'
log.debug("study", "In Connection.processResponse ident=" + str(ident) + "\t code=" + str(code) + "\t data=")
chan = self.qmap.pop(ident, None) #从字典中读取，并删除该数据
if not chan: return
buf = JdwpBuffer()
buf.config(*self.sizes)
buf.prepareUnpack(data)
return chan.put((code, buf))
def processRequest(self, ident, code, data):
'internal to the i/o thread w/ recv ctrl; processes incoming request'
log.debug("study", "In Connection.processRequest ident=" + str(ident) + "\t code=" + str(code) + "\t data=")
chan = self.rmap.get(code) #所有中断都由该chan队列处理，每次只是从rmap读出内容，而没有将rmap对应的chan清除
if not chan: return #TODO
buf = JdwpBuffer()
buf.config(*self.sizes)
buf.prepareUnpack(data)
return chan.put((ident, buf)) #将解析后的数据压入队列中
def processBind(self, qr, ident, chan):
'internal[内部的] to i/o thread; performs a query or request bind'
#根据qr值的不同，以ident为关键字，以chan为值，放入不同的字典中
log.debug("study", "In Connection(Thread).processBind qr=" + str(qr) + "\t ident=" + str(ident) + "\t chan=" + str(chan))
log.debug("study", "++bindqueue.get FOR q ++")
if qr == 'q':
self.qmap[ident] = chan
elif qr == 'r':
self.rmap[ident] = chan
def find_object(ctxt, oid):
for t in ctxt.sess.threads():
for f in t.frames:
for k, v in f.values.items():
log.debug(
"study",
"In inspect.find_object k=" + str(k) + "\t v=" + str(v))
if type(v) is andbug.vm.Object and v.oid == oid:
return (v, t) #v：变量的值， t：所在的线程信息
return None
def hook(self, code, chan):
'''
when code requests are received, they will be put in chan for
processing
'''
#使用锁
with self.xmitlock:
self.bindqueue.put(('r', code, chan)) #加入一个先进先出的队列
log.debug("study", "++ for hook function bindqueue.put FOR r ++ code=" + str(code))
def methods(ctxt, cpath, mquery=None):
'lists the methods of a class'
cpath, mname, mjni = andbug.options.parse_mquery(cpath, mquery) #cpath=Lcom/example/test/MainActivity; mname=onCreate [函数名] mjni=None［可能是参数信息不确定］
infor = "cpath="+ str(cpath) + "\t mname="+ str(mname) + "\t mjni=" + str(mjni);
log.debug("study", infor);
title = "Methods " + ((cpath + "->" + mquery) if mquery else (cpath))
with andbug.screed.section(title):
for m in ctxt.sess.classes(cpath).methods(filtername=mname, jni=mjni):
andbug.screed.item(str(m))
def methods(ctxt, cpath, mquery=None):
'lists the methods of a class'
cpath, mname, mjni = andbug.options.parse_mquery(
cpath, mquery
) #cpath=Lcom/example/test/MainActivity; mname=onCreate [函数名] mjni=None［可能是参数信息不确定］
infor = "cpath=" + str(cpath) + "\t mname=" + str(
mname) + "\t mjni=" + str(mjni)
log.debug("study", infor)
title = "Methods " + ((cpath + "->" + mquery) if mquery else (cpath))
with andbug.screed.section(title):
for m in ctxt.sess.classes(cpath).methods(filtername=mname, jni=mjni):
andbug.screed.item(str(m))
def report_hit(t):
'''
处理METHOD_ENTRY事件回调函数，
t有两个参数，分别 t[0] thread
t[1] Location
'''
t = t[0] #t是一个Thread类型的变量
with andbug.screed.section("Breakpoint hit in %s, process suspended." % t):
t.sess.suspend() #暂停当前线程
for f in t.frames: #t.frames是返回当前的堆栈信息
name = str(f.loc)
if f.native: #判断堆栈中函数的类型，是否是内部函数。如dalvik.system.NativeStart.main([Ljava/lang/String;)V <native>
name += ' <native>'
with andbug.screed.refer(name):
log.debug("study", "function name:" + str(name) )
parse_frame_detail(f)
def report_hit(t):
'''
处理METHOD_ENTRY事件回调函数，
t有两个参数，分别 t[0] thread
t[1] Location
'''
t = t[0] #t是一个Thread类型的变量
with andbug.screed.section("Breakpoint hit in %s, process suspended." % t):
t.sess.suspend() #暂停当前线程
for f in t.frames: #t.frames是返回当前的堆栈信息
name = str(f.loc)
if f.native: #判断堆栈中函数的类型，是否是内部函数。如dalvik.system.NativeStart.main([Ljava/lang/String;)V <native>
name += ' <native>'
with andbug.screed.refer(name):
log.debug("study", "function name:" + str(name))
parse_frame_detail(f)
def process(self):
'invoked repeatedly by the processing thread'
size, ident, flags, code = self.readHeader() #TODO: HANDLE CLOSE #读取数据头，包含一下元素size、ident、flags、code
log.debug("study", "In Connection(Thread).process size=" + str(size) + "\t ident="+ str(ident) + "\t flags=" +str(flags) + "\t code=" + str(code))
data = self.read(size) #TODO: HANDLE CLOSE #根据Header中的长度信息，读取具体数据。
try: # We process binds[绑定] after receiving messages to prevent a race
while True:
self.processBind(*self.bindqueue.get(False)) #bindqueue.get(False)参数为False，队列将引发Empty异常
except EmptyQueue:
log.debug("study", "Except for Empty Queue")
pass
#TODO: update binds with all from bindqueue
#对于来自虚拟机的事件消息，self.processBind(*self.bindqueue.get(False))不起作用，直接触发EmptyQueue异常，后续调用processRequest函数
if flags == 0x80:
self.processResponse(ident, code, data) #答复数据包的flag是0x80
else:
self.processRequest(ident, code, data) #请求数据包的flag是0x00
def inspect(ctxt, oid):
'inspect an object'
ctxt.sess.suspend()
try:
oid = long(oid)
rtval = find_object(ctxt, oid)
if rtval is None:
andbug.screed.section('object <%s> not found' % oid)
else:
obj, thread = rtval
with andbug.screed.section('object <%s> %s in %s'
% (str(obj.oid), str(obj.jni), str(thread))):
log.debug("study", "In inspect obj.oid=" + str(obj.oid) + "\t jni=" + str(obj.jni) + "\t thread=" + str(thread))
for k, v in obj.fields.items():
log.debug("study", "In inspect k=" + str(k) + "\t v=" + str(v) + "\t type=" + type(v).__name__)
andbug.screed.item('%s=%s <%s>' % (k, v, type(v).__name__))
except ValueError:
print('!! error, invalid oid param. expecting <long> and got <%s>.'
% type(oid).__name__)
finally:
ctxt.sess.resume()
def request(self, code, data='', timeout=None):
'send a request, then waits for a response; returns response'
queue = Queue()
log.debug("study", "In Connection.request code=" + str(code) + "\t data=" + str(data))
with self.xmitlock:
ident = self.acquireIdent()
self.bindqueue.put(('q', ident, queue)) #每发送一个请求向bindqueue中压入一个数据
log.debug("study", "++bindqueue.put FOR q ++")
self.writeContent(ident, 0x0, code, data)
try:
log.debug("study", "wait_code:" + str(code))
return queue.get(1, timeout) #向虚拟机发出指令后一直处于等待状态，知道queue队列中出现返回信息，接下来处理
except EmptyQueue:
return None, None
def adb(*args):
log.debug(adb, ' '.join(map(str, args)))
try:
return sh(seq("adb", *args))
except OSError as err:
raise ConfigError('could not find "adb" from the Android SDK in your PATH')
