def run(self): #执行监听
capture = pcapy.open_live(self.__device, 65536, 1, 0) #将网卡设置为混杂模式
if len(self.__filter) != 0: #有过滤条件
try: #设置过滤规则，并检测输入的过滤规则是否有误
capture.setfilter(self.__filter)
except:
self.__showErrorSignal.emit() #向主线程发送过滤规则有误信号
return
while self.__runTag: #循环直至runTag为0
(head, data) = capture.next() #捕获数据包
if head != None:
resolveObj = Resolve()
res = resolveObj.resolve(head, data) #交由解析对象解析数据包
if res != None:
res["originalHex"] = data.hex()
self.__resList.append(res)
self.__getDataSignal.emit() #通知主界面此时可以获取数据
def install_actions(self, arg, mode='recur', force=False, forceall=False):
"""
Create a list of actions which are required for installing, which
includes updating, a package (without actually doing anything).
The first argument may be any of:
* the KVS key, i.e. the egg filename
* a requirement object (enstaller.resolve.Req)
* the requirement as a string
"""
req = req_from_anything(arg)
# resolve the list of eggs that need to be installed
self._connect()
eggs = Resolve(self.remote, self.verbose).install_sequence(req, mode)
if eggs is None:
raise EnpkgError("No egg found for requirement '%s'." % req)
if not forceall:
# remove already installed eggs from egg list
rm = lambda eggs: [e for e in eggs if self.find(e) is None]
if force:
eggs = rm(eggs[:-1]) + [eggs[-1]]
else:
eggs = rm(eggs)
res = []
for egg in eggs:
res.append(('fetch_%d' % bool(forceall or force), egg))
if not self.hook:
# remove packages with the same name (from first egg collection
# only, in reverse install order)
for egg in reversed(eggs):
name = split_eggname(egg)[0].lower()
index = dict(self.ec.collections[0].query(name=name))
assert len(index) < 2
if len(index) == 1:
res.append(('remove', index.keys()[0]))
for egg in eggs:
res.append(('install', egg))
return res
