diff --git a/searx/engines/baidu.py b/searx/engines/baidu.py new file mode 100644 index 000000000..cf0eabf85 --- /dev/null +++ b/searx/engines/baidu.py @@ -0,0 +1,169 @@ +# SPDX-License-Identifier: AGPL-3.0-or-later +"""Bing (Web) + +- https://github.com/searx/searx/issues/2019#issuecomment-648227442 +""" + +import re +from urllib.parse import urlencode +from lxml import html +from searx.utils import eval_xpath, extract_text, eval_xpath_list, eval_xpath_getindex +from searx.network import raise_for_httperror, multi_requests, get, Request +from searx.exceptions import SearxEngineCaptchaException + +about = { + "website": 'https://www.baidu.com', + "wikidata_id": 'Q14772', + "official_api_documentation": 'https://apis.baidu.com/', + "use_official_api": False, + "require_api_key": False, + "results": 'HTML', + "language": 'zn', +} + +# engine dependent config +categories = ['general', 'web'] +paging = False +time_range_support = False +safesearch = False + +base_url = 'https://www.baidu.com/' +search_string = 's?{query}' + +skip_tpls = ('img_normal', 'short_video', 'yl_music_song', 'dict3', 'recommend_list') + +desc_xpath_per_tpl = { + 'se_com_default': './/span[contains(@class, "content-right_8Zs40")]', + 'kaifa_pc_open_source_software': './/p[contains(@class, "c-color-text")]', + 'bk_polysemy': './/div/@aria-label', + 'se_st_single_video_zhanzhang': './/span[contains(@class, "c-span-last")]//p[2]', +} + + +def get_initial_parameters(params): + resp_index = get(base_url, headers=params['headers'], raise_for_httperror=True) + dom = html.fromstring(resp_index.text) + query_params = {} + for ielement in eval_xpath_list(dom, '//form[@id="form"]//input[@name]'): + name = ielement.attrib.get('name') + value = ielement.attrib.get('value') + query_params[name] = value + return query_params, resp_index.cookies + + +def request(query, params): + params['headers'].update( + { + 'Accept-Language': 'en-US,en;q=0.5', + 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8', + 'Sec-Fetch-Dest': 'document', + 'Sec-Fetch-Mode': 'navigate', + 'Sec-Fetch-Site': 'same-origin', + 'Sec-Fetch-User': '?1', + 'Sec-GPC': '1', + 'Upgrade-Insecure-Requests': '1', + 'TE': 'trailers', + } + ) + + query_params, cookies = get_initial_parameters(params) + query_params['wd'] = query + + params['url'] = base_url + search_string.format(query=urlencode(query_params)) + params['cookies'] = cookies + params['raise_for_httperror'] = False + return params + + +def response(resp): + results = [] + + if resp.url.host == 'wappass.baidu.com' or resp.url.path.startswith('/static/captcha'): + raise SearxEngineCaptchaException() + raise_for_httperror(resp) + + dom = html.fromstring(resp.text) + + # follow redirect but don't use the result page to reduce the CAPTCHA issue + redirect_element = eval_xpath_getindex(dom, '//noscript/meta[@http-equiv="refresh"]/@content', 0, default=None) + if redirect_element and redirect_element.startswith('0; url='): + get( + base_url + redirect_element[8:], + headers=resp.search_params['headers'], + cookies=resp.search_params['cookies'], + ) + + for result in eval_xpath_list(dom, '//div[contains(@id,"content_left")]/div[contains(@class, "c-container")]'): + tpl = result.attrib.get('tpl') + if tpl in skip_tpls: + continue + + if tpl == 'kaifa_pc_blog_weak': + # skip the result to kaifa.baidu.com (search engine for IT) + # but includes results from kaifa + for r2 in eval_xpath_list(result, './/div[contains(@class, "c-gap-bottom-small")]'): + title = extract_text(eval_xpath(r2, './/div[@class="c-row"]//a')) + url = extract_text(eval_xpath(r2, './/div[@class="c-row"]//a/@href')) + content = extract_text(eval_xpath(r2, '//span[@class="c-line-clamp2"]')) + results.append( + { + 'url': url, + 'title': title, + 'content': content, + } + ) + continue + + # normal results + title = extract_text(eval_xpath(result, './/h3/a')) + url = extract_text(eval_xpath(result, './/h3/a/@href')) + + if not title or not url: + continue + + content = None + if tpl in desc_xpath_per_tpl: + # try the XPath for the Baidu template + content = extract_text(eval_xpath(result, desc_xpath_per_tpl[tpl])) + if not content: + # no content was found: try all the XPath from the Baidu templates + for xp in desc_xpath_per_tpl.values(): + content = extract_text(eval_xpath(result, xp)) + if content: + break + results.append( + { + 'url': url, + 'title': title, + 'content': content, + } + ) + + # resolve the Baidu redirections + # note: Baidu does not support HTTP/2 + request_list = [ + Request.get( + u['url'].replace('http://www.baidu.com/link?url=', 'https://www.baidu.com/link?url='), + allow_redirects=False, + headers=resp.search_params['headers'], + ) + for u in results + ] + response_list = multi_requests(request_list) + for i, redirect_response in enumerate(response_list): + if not isinstance(redirect_response, Exception): + results[i]['url'] = redirect_response.headers['location'] + + return results + + +def debug_write_content_to_file(text): + RE_STYLE_ELEMENT = re.compile(r']*>[^<]+') + RE_SCRIPT_ELEMENT = re.compile(r']*>[^<]+') + RE_COMMENT_ELEMENT = re.compile(r'\<\!\-\-[^-]+\-\-\>') + with open('baidu.html', 'wt', encoding='utf-8') as f: + text = RE_STYLE_ELEMENT.sub("", text) + text = RE_SCRIPT_ELEMENT.sub("", text) + text = RE_COMMENT_ELEMENT.sub("", text) + text = "\n".join([ll.rstrip() for ll in text.splitlines() if ll.strip()]) + f.write(text) diff --git a/searx/settings.yml b/searx/settings.yml index 60d04bb0e..da126c29f 100644 --- a/searx/settings.yml +++ b/searx/settings.yml @@ -422,6 +422,12 @@ engines: shortcut: bi disabled: true + - name: baidu + engine: baidu + shortcut: ba + timeout: 15 + disabled: true + - name: bing images engine: bing_images shortcut: bii