def firefox_ver(self, value):
# 如果格式不符合，保持原来的值，不做任何修改
if not helper.match_expect_type(value, 'dict'):
return
if 'min' in value and helper.match_expect_type(value['min'], 'int'):
self._firefox_ver['min'] = value['min']
# 使用range进行list生成时，会会忽略最大值，所以需要+1
# [range(74, 75)] => [74]
if 'max' in value and helper.match_expect_type(value['max'], 'int'):
self._firefox_ver['max'] = value['max'] + 1
def storage_type(self, value):
r = gbh_helper.enum_set_check(value=value,
enum_type=gfp_self_enum.StorageType)
if r is None:
return
else:
self._storage_type = r
def proxy_type(self, value):
r = gbh_helper.enum_set_check(value=value,
enum_type=gfp_self_enum.ProxyType)
if r is None:
return
else:
self._proxy_type = r
def country(self, value):
r = gbh_helper.enum_set_check(value=value,
enum_type=gfp_self_enum.Country,
replace=False)
if r is None:
return
else:
self._country = r
def get_chrome_ver(setting, url, if_need_proxy, proxies):
'''
:param setting: setting的实例
:param url: 获取chrome版本的url
:param if_need_proxy:连接到https://www.chromedownloads.net是否需要代理
:param proxies: 如果需要使用代理，可用的代理
:return: set
'''
chrome_ver = set({})
current_year = datetime.date.today().year
# print(current_year)
# print(if_need_proxy)
# valid_proxies = None
# if if_need_proxy:
# if setting.proxies is None:
# raise Exception("setting没有设置任何代理，无法连接到https://www.chromedownloads\
# .net获得chrome版本")
# # print(setting.proxies)
#
# for single_proxies in setting.proxies:
# tmp = helper.detect_if_proxy_usable(proxies=single_proxies, url=url)
# # print(tmp)
# if tmp:
# # print(single_proxies)
# valid_proxies = single_proxies
# break
#
# if valid_proxies is None:
# raise Exception('尝试了所有代理，都无法连接https://www.chromedownloads.net')
# print(valid_proxies)
r = helper.send_request_get_response(url=url,
if_use_proxy=if_need_proxy,
proxies=proxies,
header=self_constant.HEADER)
# print(r.html)
records = r.html.find(
'div.download_content>ul.fix>'
'li[class!=divide-line]', first=False)
# print(records)
for single_record in records:
# print(single_record.text)
version_element_list = single_record.find('span.version_title>a')
release_data_element_list = single_record.find('span.release_date')
# 第一个li是标题，需要忽略
if len(version_element_list) == 0:
continue
# 判断版本时间
version_release_year = \
int(release_data_element_list[0].text.split('-')[0])
if current_year - version_release_year + 1 > \
setting.chrome_max_release_year:
continue
chrome_ver.add(version_element_list[0].text.split('_')[3])
return chrome_ver
def raw_site(self, value):
r = gbh_helper.enum_set_check(value=value,
enum_type=gfp_self_enum.SupportedWeb)
if r is None:
return
else:
self._raw_site = r
self._site = self._generate_site(
enumset_site=self._raw_site,
enumset_protocol=self._protocol,
int_site_max_page_no=self._site_max_page_no)
def chrome_max_release_year(self, value):
# 是否为整数
if not helper.match_expect_type(value, 'int'):
return
# 是否大于0
if value < 0:
return
# 是否小于当前年-2008
if CHROME_MAX_RELEASE_YEAR < value:
return
self._chrome_max_release_year = value
def site_max_page_no(self, value):
if not gbh_helper.match_expect_type(value, 'int'):
raise ValueError('site_max_page_no的值必须是整数')
if value < 1 or value > 10:
raise ValueError('site_max_page_no的值必须在1到9之间')
# 实际使用列表表达式生成url，因此site_max_page_no要+1，符合感受
self._site_max_page_no = value + 1
self._site = self._generate_site(
enumset_site=self._raw_site,
enumset_protocol=self._protocol,
int_site_max_page_no=self._site_max_page_no)
def time_interval_in_seconds(self, old_date_time, new_date_time):
'''
计算old_date_time和new_date_time之间时间间隔，单位秒
:param old_date_time:
:param new_date_time:
:return: int
'''
if not helper.match_expect_type(old_date_time, 'datetime.datetime'):
if helper.match_expect_type(old_date_time, 'str'):
old_date_time = datetime.datetime.strptime(
old_date_time, '%Y-%m-%d %H:%M:%S')
else:
raise ValueError('old_date_time的格式不正确')
if not helper.match_expect_type(new_date_time, 'datetime.datetime'):
if helper.match_expect_type(new_date_time, 'str'):
new_date_time = datetime.datetime.strptime(
new_date_time, '%Y-%m-%d %H:%M:%S')
else:
raise ValueError('new_date_time的格式不正确')
# datetime.datetime.now()+datetime.timedelta(days=1)
return int((new_date_time - old_date_time).total_seconds())
def getPrefilterFunction(webenum):
'''
根据enum SupportedWeb的名字，返回对应的prefilter函数，如果没有出错，返回None
:param webenum:
:return: function
'''
if not gbh_helper.match_expect_type(webenum, 'SupportedWeb'):
return
if webenum.name == gfp_self_enum.SupportedWeb.Xici.name:
return prefilter.pre_filter_xicidaili
if webenum.name == gfp_self_enum.SupportedWeb.Kuai.name:
return prefilter.pre_filter_kuaidaili
if webenum.name == gfp_self_enum.SupportedWeb.Proxylist.name:
return prefilter.pre_filter_proxy_list
if webenum.name == gfp_self_enum.SupportedWeb.Hidemy.name:
return prefilter.pre_filter_hidemy
return
def getExtractDataFunction(webenum):
'''
根据enum SupportedWeb的名字，返回对应的prefilter函数，如果没有出错，返回None
:param webenum:
:return: function
'''
if not gbh_helper.match_expect_type(webenum, 'SupportedWeb'):
return
if webenum.name == gfp_self_enum.SupportedWeb.Xici.name:
return gen_proxy_from_page.extra_data_from_page_xicidaili
if webenum.name == gfp_self_enum.SupportedWeb.Kuai.name:
return gen_proxy_from_page.extra_data_from_page_kuaidaili
if webenum.name == gfp_self_enum.SupportedWeb.Proxylist.name:
return gen_proxy_from_page.extra_data_from_page_proxylist
if webenum.name == gfp_self_enum.SupportedWeb.Hidemy.name:
return gen_proxy_from_page.extra_data_from_page_hidemy
return
def validate_single_proxy(self, single_proxy, url, final_result):
'''
:param single_proxy:dict。 gen_proxy获得的结果中，单个记录。{ip,port,type,protocol}
:param url: 代理对此url是否有效
:param final_result:list。为了在协程中直接将valid的proxy提取，直接传入此参数
:return: boolean。实际上，使用协程时，无法使用此返回值，而是直接将结果放入final_result
'''
ip = single_proxy['ip']
port = single_proxy['port']
proxy = {'http': '%s:%s' % (ip, port), 'https': '%s:%s' % (ip, port)}
print('开始检测代理%s:%s对网站%s是否有效' %
(single_proxy['ip'], single_proxy['port'], url))
# print(proxy)
if gbh_helper.detect_if_proxy_usable(proxies=proxy, url=url):
print('代理 %s 有效' % proxy['http'])
final_result.append(single_proxy)
return True
else:
print('代理 %s 无效' % proxy['http'])
# final_result.append(single_result)
return False
def check_if_site_need_proxy(self):
# print(self._site)
for single_site in self._site:
single_site['need_proxy'] = gbh_helper.detect_if_need_proxy(
single_site['urls'][0])
def gen_header(setting, url, num=None):
'''
:param setting:
:param url: 根据url生成host
:param num:
:return:
'''
ua = []
if num is not None:
# 如果只需要一个header，优选返回firefox的ua
if num == 1:
# print(setting.browser_type)
if self_enum.BrowserType.FireFox in setting.browser_type:
# print('num =1 browse=ff')
ua += gen_ua.generate_firefox_ua(setting=setting, num=1)
elif self_enum.BrowserType.Chrome in setting.browser_type:
# print('num =1 browse=ch')
ua += gen_ua.generate_chrome_ua(setting=setting, num=1)
# 如果需要多个header
else:
# 如果可以产生ff的ua，先产生
if self_enum.BrowserType.FireFox in setting.browser_type:
ua += gen_ua.generate_firefox_ua(setting=setting, num=num)
# 如果生成的ff的ua数量不满足，再尝试生成chrome的ua
if len(ua) < num:
if self_enum.BrowserType.Chrome in setting.browser_type:
ua += gen_ua.generate_chrome_ua(setting=setting, num=num)
# num = None，生成最大数量的ua
else:
if self_enum.BrowserType.FireFox in setting.browser_type:
ua += gen_ua.generate_firefox_ua(setting=setting)
if self_enum.BrowserType.Chrome in setting.browser_type:
ua += gen_ua.generate_chrome_ua(setting=setting)
header = []
host = gbh_helper.extract_host_from_url(url)
for single_ua in ua:
# setting.header_no_ua['User-Agent'] = single_ua
# tmp_header = setting.header_no_ua
# tmp_header['User-Agent'] = single_ua
if 'Firefox' in single_ua:
header.append({
**setting.firefox_header_no_ua,
**{
'User-Agent': single_ua
},
**{
'Host': host
}
})
elif 'Chrome' in single_ua:
header.append({
**setting.chrome_header_no_ua,
**{
'User-Agent': single_ua
},
**{
'Host': host
}
})
return header
def generate_chrome_ua(setting, num=None):
'''
:param setting: setting的实例
:param num: 期望生成chrome_ua的个数
:return: list，包含需要获取版本的UA
'''
if num is not None:
# 如果只需要返回一个，直接生成
if num == 1:
return [
'Mozilla/5.0 (Windows NT 6.0; Win64; x64) AppleWebKit/537.36 \
(KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36'
]
try:
version_url = generate_chrome_url_base_on_type(setting)
except ValueError as e:
# print('generate_chrome_header调用generate_chrome_url_base_on_type'
# '，传入的参数必须是set')
print(e)
return
# 检测是否需要代理，如果需要，设置代理
# if_use_proxy = helper.detect_if_need_proxy(version_url[0])
# print(version_url)
if_need_proxy = helper.detect_if_need_proxy(self_constant.CHROME_BASE_URL)
valid_proxies = None
if if_need_proxy:
if setting.proxies is None:
raise Exception("setting没有设置任何代理，无法连接到https://www.chromedownloads\
.net获得chrome版本")
# print(setting.proxies)
for single_proxies in setting.proxies:
tmp = helper.detect_if_proxy_usable(
proxies=single_proxies, url=self_constant.CHROME_BASE_URL)
# print(tmp)
if tmp:
# print(single_proxies)
valid_proxies = single_proxies
break
if valid_proxies is None:
raise Exception('尝试了所有代理，都无法连接https://www.chromedownloads.net')
chrome_ver = set({})
for single_url in version_url:
tmp_chrome_ver = get_chrome_ver(url=single_url,
setting=setting,
if_need_proxy=if_need_proxy,
proxies=valid_proxies)
# logging.debug(tmp_chrome_ver)
# 获得的version加入chrome_ver
chrome_ver = chrome_ver | tmp_chrome_ver
# logging.debug(chrome_ver)
os_bit = set([])
if self_enum.OsType.All in setting.os_type:
os_bit = {'Win32; x32', 'Win64; x64'}
else:
if self_enum.OsType.Win32 in setting.os_type:
os_bit.add('Win32; x32')
if self_enum.OsType.Win64 in setting.os_type:
os_bit.add('Win64; x64')
chrome_ua = [
'Mozilla/5.0 (%s; %s) AppleWebKit/537.36 (KHTML, \
like Gecko) Chrome/%s Safari/537.36' % (winver, osbit, chromever)
for osbit in os_bit for winver in setting.WIN_VER
for chromever in chrome_ver
]
# else:
# raise Exception('当前不支持产生非Windows的user-agent')
if num is not None:
if len(chrome_ua) > num:
return random.sample(chrome_ua, num)
return chrome_ua
def chrome_type(self, value):
r = helper.enum_set_check(value, self_enum.ChromeType)
if r is None:
return
else:
self._chrome_type = r
def os_type(self, value):
r = helper.enum_set_check(value, self_enum.OsType)
if r is None:
return
else:
self._os_type = r
def browser_type(self, value):
r = helper.enum_set_check(value, self_enum.BrowserType)
if r is None:
return
else:
self._browser_type = r
def valid_time_in_db(self, value):
if not gbh_helper.match_expect_type(value, 'int'):
raise ValueError('valid_time_in_db的值必须是整数')
if value < 300 or value > 86400 * 5:
raise ValueError('valid_time_in_db的值必须在300到86400×5之间')
self._valid_time_in_db = value
