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<li class="toctree-l1 has-children"><a class="reference internal" href="../../../user/index.html">User information</a><input aria-label="Toggle navigation of User information" class="toctree-checkbox" id="toctree-checkbox-1" name="toctree-checkbox-1" role="switch" type="checkbox"/><label for="toctree-checkbox-1"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
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<li class="toctree-l2"><a class="reference internal" href="../../../user/search-syntax.html">Search syntax</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../user/configured_engines.html">Configured Engines</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../../own-instance.html">Why use a private instance?</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../../../admin/settings/settings.html"><code class="docutils literal notranslate"><span class="pre">settings.yml</span></code></a></li>
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<li class="toctree-l3"><a class="reference internal" href="../../../admin/settings/settings_engines.html"><code class="docutils literal notranslate"><span class="pre">engines:</span></code></a></li>
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<li class="toctree-l3"><a class="reference internal" href="../../../admin/settings/settings_outgoing.html"><code class="docutils literal notranslate"><span class="pre">outgoing:</span></code></a></li>
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<li class="toctree-l3"><a class="reference internal" href="../../../admin/settings/settings_plugins.html"><code class="docutils literal notranslate"><span class="pre">plugins:</span></code></a></li>
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</ul>
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<li class="toctree-l2"><a class="reference internal" href="../../../admin/installation.html">Installation</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../admin/installation-docker.html">Installation container</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../admin/installation-scripts.html">Installation Script</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../admin/installation-searxng.html">Step by step installation</a></li>
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||
<li class="toctree-l2"><a class="reference internal" href="../../../admin/installation-granian.html">Granian</a></li>
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||
<li class="toctree-l2"><a class="reference internal" href="../../../admin/installation-uwsgi.html">uWSGI</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../admin/installation-nginx.html">NGINX</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../admin/installation-apache.html">Apache</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../admin/update-searxng.html">SearXNG maintenance</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../admin/answer-captcha.html">Answer CAPTCHA from server’s IP</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../admin/searx.limiter.html">Limiter</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../admin/api.html">Administration API</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../admin/architecture.html">Architecture</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../admin/plugins.html">List of plugins</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../admin/buildhosts.html">Buildhosts</a></li>
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</ul>
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<li class="toctree-l1 has-children"><a class="reference internal" href="../../../dev/index.html">Developer documentation</a><input aria-label="Toggle navigation of Developer documentation" class="toctree-checkbox" id="toctree-checkbox-4" name="toctree-checkbox-4" role="switch" type="checkbox"/><label for="toctree-checkbox-4"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
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<li class="toctree-l2"><a class="reference internal" href="../../../dev/quickstart.html">Development Quickstart</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../dev/commits.html">Git Commits & Change Management</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../../../dev/extended_types.html">Extended Types</a></li>
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<li class="toctree-l2 has-children"><a class="reference internal" href="../../../dev/engines/index.html">Engine Implementations</a><input aria-label="Toggle navigation of Engine Implementations" class="toctree-checkbox" id="toctree-checkbox-5" name="toctree-checkbox-5" role="switch" type="checkbox"/><label for="toctree-checkbox-5"><span class="icon"><svg><use href="#svg-arrow-right"></use></svg></span></label><ul>
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<li class="toctree-l3"><a class="reference internal" href="../../../dev/engines/enginelib.html">Engine Library</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../../../dev/engines/engines.html">SearXNG’s engines loader</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../../../dev/engines/engine_overview.html">Engine Overview</a></li>
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<li class="toctree-l3"><a class="reference internal" href="../../../dev/engines/demo/demo_online.html">Demo Online Engine</a></li>
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<article role="main" id="furo-main-content">
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<h1>Source code for searx.engines.duckduckgo</h1><div class="highlight"><pre>
|
||
<span></span><span class="c1"># SPDX-License-Identifier: AGPL-3.0-or-later</span>
|
||
<span class="sd">"""</span>
|
||
<span class="sd">DuckDuckGo WEB</span>
|
||
<span class="sd">~~~~~~~~~~~~~~</span>
|
||
|
||
<span class="sd">DDG's WEB search:</span>
|
||
|
||
<span class="sd">- DuckDuckGo WEB : ``https://links.duckduckgo.com/d.js?q=..`` (HTTP GET)</span>
|
||
<span class="sd">- DuckDuckGo WEB no-AI: ``https://noai.duckduckgo.com/`` (HTTP GET)</span>
|
||
<span class="sd">- DuckDuckGo WEB html : ``https://html.duckduckgo.com/html`` (HTTP POST no-JS / form data)</span>
|
||
<span class="sd">- DuckDuckGo WEB lite : ``https://lite.duckduckgo.com/lite`` (HTTP POST no-JS / form data)</span>
|
||
|
||
<span class="sd">DDG's content search / see engine ``duckduckgo_extra.py``</span>
|
||
|
||
<span class="sd">- DuckDuckGo Images : ``https://duckduckgo.com/i.js??q=...&vqd=...``</span>
|
||
<span class="sd">- DuckDuckGo Videos : ``https://duckduckgo.com/v.js??q=...&vqd=...``</span>
|
||
<span class="sd">- DuckDuckGo News : ``https://duckduckgo.com/news.js??q=...&vqd=...``</span>
|
||
|
||
<span class="sd">.. hint::</span>
|
||
|
||
<span class="sd"> For WEB searches and to determine the ``vqd`` value, DDG-html (no-JS) is</span>
|
||
<span class="sd"> used.</span>
|
||
|
||
<span class="sd">Special features of the no-JS services (DDG-lite & DDG-html):</span>
|
||
|
||
<span class="sd">- The no-JS clients receive a form that contains all the controlling parameters.</span>
|
||
<span class="sd">- When the form data is submitted, a real WEB browser sets the HTTP *Sec-Fetch*</span>
|
||
<span class="sd"> headers.</span>
|
||
|
||
<span class="sd">HTML ``<form>``, HTTP-Headers & DDG's bot Blocker:</span>
|
||
|
||
<span class="sd"> The HTTP User-Agent_ (see below) is generated by the WEB-client and are</span>
|
||
<span class="sd"> checked by DDG's bot blocker.</span>
|
||
|
||
<span class="sd">To simulate the behavior of a real browser session, it might be necessary to</span>
|
||
<span class="sd">evaluate additional headers. For example, in the response from DDG, the</span>
|
||
<span class="sd">Referrer-Policy_ is always set to ``origin``. A real browser would then include</span>
|
||
<span class="sd">the following header in the next request::</span>
|
||
|
||
<span class="sd"> Referer: https://html.duckduckgo.com/</span>
|
||
|
||
<span class="sd">The fields of the html-form are reverse-engineered from DDG-html and may be</span>
|
||
<span class="sd">subject to additional bot detection mechanisms and breaking changes in the</span>
|
||
<span class="sd">future.</span>
|
||
|
||
<span class="sd">Query field:</span>
|
||
|
||
<span class="sd">Intro page: https://html.duckduckgo.com/html/</span>
|
||
|
||
<span class="sd">- ``q`` (str): Search query string</span>
|
||
<span class="sd">- ``b`` (str): Beginning parameter - empty string for first page requests. If a</span>
|
||
<span class="sd"> second page is requested, this field is not set!</span>
|
||
|
||
<span class="sd">Search options:</span>
|
||
|
||
<span class="sd">- ``kl`` (str): Keyboard language/region code (e.g. 'en-us' default: 'wt-wt')</span>
|
||
<span class="sd">- ``df`` (str): Time filter, maps to values like 'd' (day), 'w' (week), 'm' (month), 'y' (year)</span>
|
||
|
||
<span class="sd">The key/value pairs ``df`` and ``kl`` are additional saved in the cookies,</span>
|
||
<span class="sd">example::</span>
|
||
|
||
<span class="sd"> Cookie: kl=en-us; df=m</span>
|
||
|
||
<span class="sd">*next page* form fields:</span>
|
||
|
||
<span class="sd">- ``nextParams`` (str): Continuation parameters from previous page response,</span>
|
||
<span class="sd"> typically empty string. Opposite of ``b``; this field is not set when</span>
|
||
<span class="sd"> requesting the first result page.</span>
|
||
|
||
<span class="sd">- ``api`` (str): API endpoint identifier, typically 'd.js'</span>
|
||
<span class="sd">- ``o`` (str): Output format, typically ``json``</span>
|
||
<span class="sd">- ``v`` (str): Typically ``l`` for subsequent pages</span>
|
||
|
||
|
||
<span class="sd">- ``dc`` (int): Display count - value equal to offset (s) + 1</span>
|
||
<span class="sd">- ``s`` (int): Search offset for pagination</span>
|
||
<span class="sd">- ``vqd`` (str): Validation query digest</span>
|
||
|
||
<span class="sd">General assumptions regarding DDG's bot blocker:</span>
|
||
|
||
<span class="sd">- Except ``Cookie: kl=..; df=..`` DDG does not use cookies in any of its</span>
|
||
<span class="sd"> services.</span>
|
||
|
||
<span class="sd">- DDG does not accept queries with more than 499 chars</span>
|
||
|
||
<span class="sd">- The ``vqd`` value ("Validation query digest") is needed to pass DDG's bot</span>
|
||
<span class="sd"> protection and is used by all request to DDG.</span>
|
||
|
||
<span class="sd">- The ``vqd`` value is generally not needed for the first query (intro); it is</span>
|
||
<span class="sd"> only required when additional pages are accessed (or when new content needs to</span>
|
||
<span class="sd"> be loaded for the query while scrolling).</span>
|
||
|
||
<span class="sd">- The second page (additional content) for a query cannot be requested without</span>
|
||
<span class="sd"> ``vqd``, as this would lead to an immediate blocking, since such a use-case</span>
|
||
<span class="sd"> does not exist in the process flows provided by DDG (and is a clear indication</span>
|
||
<span class="sd"> of a bot).</span>
|
||
|
||
<span class="sd">The following HTTP headers are being evaluated (and may possibly be responsible</span>
|
||
<span class="sd">for issues):</span>
|
||
|
||
<span class="sd">User-Agent_:</span>
|
||
<span class="sd"> The HTTP User-Agent is also involved in the formation of the vqd value, read</span>
|
||
<span class="sd"> `DuckDuckGo Bot Detection Research & Solution`_. However, it is not checked</span>
|
||
<span class="sd"> whether the UA is a known header. However, it is possible that certain UA</span>
|
||
<span class="sd"> headers (such as curl) are filtered.</span>
|
||
|
||
<span class="sd">Sec-Fetch-Mode_:</span>
|
||
<span class="sd"> In the past, Sec-Fetch-Mode had to be set to 'navigate', otherwise there were</span>
|
||
<span class="sd"> problems with the bot blocker.. I don't know if DDG still evaluates this</span>
|
||
<span class="sd"> header today</span>
|
||
|
||
<span class="sd">Accept-Language_:</span>
|
||
<span class="sd"> DDG-Lite and DDG-HTML TRY to guess user's preferred language from the HTTP</span>
|
||
<span class="sd"> ``Accept-Language``. Optional the user can select a region filter (but not a</span>
|
||
<span class="sd"> language).</span>
|
||
|
||
<span class="sd">In DDG's bot blocker, the IP will be blocked (DDG does not have a client session!)</span>
|
||
|
||
<span class="sd">- As far as is known, it is possible to remove a un-blocked an IP by executing a</span>
|
||
<span class="sd"> DDG query in a real web browser over the blocked IP (at least that's my</span>
|
||
<span class="sd"> assumption).</span>
|
||
|
||
<span class="sd"> How exactly the blocking mechanism currently works is not fully known, and</span>
|
||
<span class="sd"> there were also changes to the bot blocker in the period of Q3/Q4 2025: in the</span>
|
||
<span class="sd"> past, the IP blocking was implemented as a 'sliding window' (unblock after</span>
|
||
<span class="sd"> about 1 hour without requests from this IP)</span>
|
||
|
||
<span class="sd">Terms / phrases that you keep coming across:</span>
|
||
|
||
<span class="sd">- ``d.js``, ``i.js``, ``v.js``, ``news.js`` are the endpoints of the DDG's web</span>
|
||
<span class="sd"> API through which additional content for a query can be requested (vqd</span>
|
||
<span class="sd"> required)</span>
|
||
|
||
<span class="sd"> The ``*.js`` endpoints return a JSON response and can therefore only be</span>
|
||
<span class="sd"> executed on a JS-capable client.</span>
|
||
|
||
<span class="sd"> The service at https://lite.duckduckgo.com/lite offers general WEB searches</span>
|
||
<span class="sd"> (no news, videos etc). DDG-lite and DDG-html can be used by clients that do</span>
|
||
<span class="sd"> not support JS, aka *no-JS*.</span>
|
||
|
||
<span class="sd"> DDG-lite works a bit differently: here, ``d.js`` is not an endpoint but a</span>
|
||
<span class="sd"> field (``api=d.js``) in a form that is sent to DDG-lite.</span>
|
||
|
||
<span class="sd">- The request argument ``origin=funnel_home_website`` is often seen in the DDG</span>
|
||
<span class="sd"> services when the category is changed (e.g., from web search to news, images,</span>
|
||
<span class="sd"> or to the video category)</span>
|
||
|
||
<span class="sd">.. _DuckDuckGo Bot Detection Research & Solution:</span>
|
||
<span class="sd"> https://github.com/ggfevans/searxng/blob/mod-sidecar-harvester/docs/ddg-bot-detection-research.md</span>
|
||
|
||
<span class="sd">.. _Sec-Fetch-Mode:</span>
|
||
<span class="sd"> https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-Fetch-Mode></span>
|
||
|
||
<span class="sd">.. _Referrer-Policy:</span>
|
||
<span class="sd"> https://developer.mozilla.org/docs/Web/HTTP/Reference/Headers/Referrer-Policy#directives</span>
|
||
|
||
<span class="sd">.. _Referer:</span>
|
||
<span class="sd"> https://developer.mozilla.org/de/docs/Web/HTTP/Reference/Headers/Referer</span>
|
||
|
||
<span class="sd">.. _User-Agent:</span>
|
||
<span class="sd"> https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/User-Agent</span>
|
||
|
||
<span class="sd">.. _Accept-Language:</span>
|
||
<span class="sd"> https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Accept-Language</span>
|
||
|
||
<span class="sd">"""</span>
|
||
<span class="c1"># pylint: disable=global-statement</span>
|
||
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">json</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">re</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">typing</span><span class="w"> </span><span class="k">as</span><span class="w"> </span><span class="nn">t</span>
|
||
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">babel</span>
|
||
<span class="kn">import</span><span class="w"> </span><span class="nn">lxml.html</span>
|
||
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx</span><span class="w"> </span><span class="kn">import</span> <span class="n">locales</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx.enginelib</span><span class="w"> </span><span class="kn">import</span> <span class="n">EngineCache</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx.enginelib.traits</span><span class="w"> </span><span class="kn">import</span> <span class="n">EngineTraits</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx.exceptions</span><span class="w"> </span><span class="kn">import</span> <span class="n">SearxEngineCaptchaException</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx.external_bang</span><span class="w"> </span><span class="kn">import</span> <span class="n">EXTERNAL_BANGS</span><span class="p">,</span> <span class="n">get_node</span> <span class="c1"># type: ignore</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx.result_types</span><span class="w"> </span><span class="kn">import</span> <span class="n">EngineResults</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx.utils</span><span class="w"> </span><span class="kn">import</span> <span class="p">(</span>
|
||
<span class="n">ElementType</span><span class="p">,</span>
|
||
<span class="n">eval_xpath</span><span class="p">,</span>
|
||
<span class="n">eval_xpath_getindex</span><span class="p">,</span>
|
||
<span class="n">extr</span><span class="p">,</span>
|
||
<span class="n">extract_text</span><span class="p">,</span>
|
||
<span class="n">gen_useragent</span><span class="p">,</span>
|
||
<span class="p">)</span>
|
||
|
||
<span class="k">if</span> <span class="n">t</span><span class="o">.</span><span class="n">TYPE_CHECKING</span><span class="p">:</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx.extended_types</span><span class="w"> </span><span class="kn">import</span> <span class="n">SXNG_Response</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx.search.processors</span><span class="w"> </span><span class="kn">import</span> <span class="n">OnlineParams</span>
|
||
|
||
<span class="n">about</span><span class="p">:</span> <span class="nb">dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span> <span class="o">|</span> <span class="nb">bool</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span>
|
||
<span class="s2">"website"</span><span class="p">:</span> <span class="s2">"https://lite.duckduckgo.com/lite/"</span><span class="p">,</span>
|
||
<span class="s2">"wikidata_id"</span><span class="p">:</span> <span class="s2">"Q12805"</span><span class="p">,</span>
|
||
<span class="s2">"use_official_api"</span><span class="p">:</span> <span class="kc">False</span><span class="p">,</span>
|
||
<span class="s2">"require_api_key"</span><span class="p">:</span> <span class="kc">False</span><span class="p">,</span>
|
||
<span class="s2">"results"</span><span class="p">:</span> <span class="s2">"HTML"</span><span class="p">,</span>
|
||
<span class="p">}</span>
|
||
|
||
<span class="n">categories</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">[</span><span class="s2">"general"</span><span class="p">,</span> <span class="s2">"web"</span><span class="p">]</span>
|
||
<span class="n">paging</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span>
|
||
<span class="n">time_range_support</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span>
|
||
<span class="n">safesearch</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span>
|
||
<span class="sd">"""DDG-lite: user can't select but the results are filtered."""</span>
|
||
|
||
<span class="n">ddg_url</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">"https://html.duckduckgo.com/html/"</span>
|
||
<span class="sd">"""The process flow for determining the ``vqd`` values was implemented for the</span>
|
||
<span class="sd">no-JS variant (DDG-html)"""</span>
|
||
|
||
<span class="n">time_range_dict</span><span class="p">:</span> <span class="nb">dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span><span class="s2">"day"</span><span class="p">:</span> <span class="s2">"d"</span><span class="p">,</span> <span class="s2">"week"</span><span class="p">:</span> <span class="s2">"w"</span><span class="p">,</span> <span class="s2">"month"</span><span class="p">:</span> <span class="s2">"m"</span><span class="p">,</span> <span class="s2">"year"</span><span class="p">:</span> <span class="s2">"y"</span><span class="p">}</span>
|
||
|
||
<span class="n">_CACHE</span><span class="p">:</span> <span class="n">EngineCache</span> <span class="o">=</span> <span class="kc">None</span> <span class="c1"># pyright: ignore[reportAssignmentType]</span>
|
||
<span class="sd">"""Persistent (SQLite) key/value cache that deletes its values after ``expire``</span>
|
||
<span class="sd">seconds."""</span>
|
||
|
||
<span class="n">_HTTP_User_Agent</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="n">gen_useragent</span><span class="p">()</span>
|
||
|
||
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">get_cache</span><span class="p">()</span> <span class="o">-></span> <span class="n">EngineCache</span><span class="p">:</span>
|
||
<span class="k">global</span> <span class="n">_CACHE</span>
|
||
<span class="k">if</span> <span class="n">_CACHE</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> <span class="c1"># pyright: ignore[reportUnnecessaryComparison]</span>
|
||
<span class="n">_CACHE</span> <span class="o">=</span> <span class="n">EngineCache</span><span class="p">(</span><span class="s2">"duckduckgo"</span><span class="p">)</span> <span class="c1"># pyright: ignore[reportUnreachable]</span>
|
||
<span class="k">return</span> <span class="n">_CACHE</span>
|
||
|
||
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">set_vqd</span><span class="p">(</span><span class="n">query</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="nb">int</span><span class="p">,</span> <span class="n">value</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">params</span><span class="p">:</span> <span class="s2">"OnlineParams"</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
|
||
<span class="n">cache</span> <span class="o">=</span> <span class="n">get_cache</span><span class="p">()</span>
|
||
<span class="n">key</span> <span class="o">=</span> <span class="n">cache</span><span class="o">.</span><span class="n">secret_hash</span><span class="p">(</span><span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="n">query</span><span class="si">}</span><span class="s2">//</span><span class="si">{</span><span class="n">params</span><span class="p">[</span><span class="s1">'headers'</span><span class="p">][</span><span class="s1">'User-Agent'</span><span class="p">]</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
|
||
<span class="n">cache</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">key</span><span class="o">=</span><span class="n">key</span><span class="p">,</span> <span class="n">value</span><span class="o">=</span><span class="n">value</span><span class="p">,</span> <span class="n">expire</span><span class="o">=</span><span class="mi">3600</span><span class="p">)</span>
|
||
|
||
|
||
<div class="viewcode-block" id="get_vqd">
|
||
<a class="viewcode-back" href="../../../dev/engines/online/duckduckgo.html#searx.engines.duckduckgo.get_vqd">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">get_vqd</span><span class="p">(</span>
|
||
<span class="n">query</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span>
|
||
<span class="n">params</span><span class="p">:</span> <span class="s2">"OnlineParams"</span><span class="p">,</span>
|
||
<span class="p">)</span> <span class="o">-></span> <span class="nb">str</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Returns the ``vqd`` value that fits to the *query* (and HTTP User-Agent_</span>
|
||
<span class="sd"> header).</span>
|
||
|
||
<span class="sd"> :param query: the query term</span>
|
||
<span class="sd"> :param params: request parameters</span>
|
||
<span class="sd"> """</span>
|
||
<span class="n">cache</span> <span class="o">=</span> <span class="n">get_cache</span><span class="p">()</span>
|
||
<span class="n">key</span> <span class="o">=</span> <span class="n">cache</span><span class="o">.</span><span class="n">secret_hash</span><span class="p">(</span><span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="n">query</span><span class="si">}</span><span class="s2">//</span><span class="si">{</span><span class="n">params</span><span class="p">[</span><span class="s1">'headers'</span><span class="p">][</span><span class="s1">'User-Agent'</span><span class="p">]</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
|
||
<span class="n">value</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="n">cache</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">key</span><span class="o">=</span><span class="n">key</span><span class="p">)</span> <span class="ow">or</span> <span class="s2">""</span>
|
||
<span class="k">if</span> <span class="n">value</span><span class="p">:</span>
|
||
<span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"get_vqd: re-use cached value: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span>
|
||
<span class="k">return</span> <span class="n">value</span></div>
|
||
|
||
|
||
|
||
<div class="viewcode-block" id="get_ddg_lang">
|
||
<a class="viewcode-back" href="../../../dev/engines/online/duckduckgo.html#searx.engines.duckduckgo.get_ddg_lang">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">get_ddg_lang</span><span class="p">(</span>
|
||
<span class="n">eng_traits</span><span class="p">:</span> <span class="n">EngineTraits</span><span class="p">,</span>
|
||
<span class="n">sxng_locale</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span>
|
||
<span class="n">default</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">"en_US"</span><span class="p">,</span>
|
||
<span class="p">)</span> <span class="o">-></span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""Get DuckDuckGo's language identifier from SearXNG's locale.</span>
|
||
|
||
<span class="sd"> .. hint::</span>
|
||
|
||
<span class="sd"> `DDG-lite <https://lite.duckduckgo.com/lite>`__ and the *no Javascript*</span>
|
||
<span class="sd"> page https://html.duckduckgo.com/html do not offer a language selection</span>
|
||
<span class="sd"> to the user.</span>
|
||
|
||
<span class="sd"> DDG defines its languages by a region code (:py:obj:`fetch_traits`). To</span>
|
||
<span class="sd"> get region and language of a DDG service use:</span>
|
||
|
||
<span class="sd"> .. code: python</span>
|
||
|
||
<span class="sd"> eng_region = traits.get_region(params["searxng_locale"], traits.all_locale)</span>
|
||
<span class="sd"> eng_lang = get_ddg_lang(traits, params["searxng_locale"])</span>
|
||
|
||
<span class="sd"> It might confuse, but the ``l`` value of the cookie is what SearXNG calls</span>
|
||
<span class="sd"> the *region*:</span>
|
||
|
||
<span class="sd"> .. code:: python</span>
|
||
|
||
<span class="sd"> # !ddi paris :es-AR --> {'ad': 'es_AR', 'ah': 'ar-es', 'l': 'ar-es'}</span>
|
||
<span class="sd"> params['cookies']['ad'] = eng_lang</span>
|
||
<span class="sd"> params['cookies']['ah'] = eng_region</span>
|
||
<span class="sd"> params['cookies']['l'] = eng_region</span>
|
||
|
||
<span class="sd"> """</span>
|
||
<span class="n">lang</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="n">eng_traits</span><span class="o">.</span><span class="n">get_language</span><span class="p">(</span><span class="n">sxng_locale</span><span class="p">,</span> <span class="n">default</span><span class="p">)</span>
|
||
|
||
<span class="k">return</span> <span class="n">eng_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s2">"lang_region"</span><span class="p">]</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">sxng_locale</span><span class="p">,</span> <span class="n">lang</span><span class="p">)</span> <span class="ow">or</span> <span class="kc">None</span></div>
|
||
|
||
|
||
|
||
<span class="n">ddg_reg_map</span><span class="p">:</span> <span class="nb">dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span>
|
||
<span class="s2">"tw-tzh"</span><span class="p">:</span> <span class="s2">"zh_TW"</span><span class="p">,</span>
|
||
<span class="s2">"hk-tzh"</span><span class="p">:</span> <span class="s2">"zh_HK"</span><span class="p">,</span>
|
||
<span class="s2">"ct-ca"</span><span class="p">:</span> <span class="s2">"skip"</span><span class="p">,</span> <span class="c1"># ct-ca and es-ca both map to ca_ES</span>
|
||
<span class="s2">"es-ca"</span><span class="p">:</span> <span class="s2">"ca_ES"</span><span class="p">,</span>
|
||
<span class="s2">"id-en"</span><span class="p">:</span> <span class="s2">"id_ID"</span><span class="p">,</span>
|
||
<span class="s2">"no-no"</span><span class="p">:</span> <span class="s2">"nb_NO"</span><span class="p">,</span>
|
||
<span class="s2">"jp-jp"</span><span class="p">:</span> <span class="s2">"ja_JP"</span><span class="p">,</span>
|
||
<span class="s2">"kr-kr"</span><span class="p">:</span> <span class="s2">"ko_KR"</span><span class="p">,</span>
|
||
<span class="s2">"xa-ar"</span><span class="p">:</span> <span class="s2">"ar_SA"</span><span class="p">,</span>
|
||
<span class="s2">"sl-sl"</span><span class="p">:</span> <span class="s2">"sl_SI"</span><span class="p">,</span>
|
||
<span class="s2">"th-en"</span><span class="p">:</span> <span class="s2">"th_TH"</span><span class="p">,</span>
|
||
<span class="s2">"vn-en"</span><span class="p">:</span> <span class="s2">"vi_VN"</span><span class="p">,</span>
|
||
<span class="p">}</span>
|
||
|
||
<span class="n">ddg_lang_map</span><span class="p">:</span> <span class="nb">dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span>
|
||
<span class="c1"># use ar --> ar_EG (Egypt's arabic)</span>
|
||
<span class="s2">"ar_DZ"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"ar_JO"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"ar_SA"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="c1"># use bn --> bn_BD</span>
|
||
<span class="s2">"bn_IN"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="c1"># use de --> de_DE</span>
|
||
<span class="s2">"de_CH"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="c1"># use en --> en_US,</span>
|
||
<span class="s2">"en_AU"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"en_CA"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"en_GB"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="c1"># Esperanto</span>
|
||
<span class="s2">"eo_XX"</span><span class="p">:</span> <span class="s2">"eo"</span><span class="p">,</span>
|
||
<span class="c1"># use es --> es_ES,</span>
|
||
<span class="s2">"es_AR"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"es_CL"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"es_CO"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"es_CR"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"es_EC"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"es_MX"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"es_PE"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"es_UY"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"es_VE"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="c1"># use fr --> rf_FR</span>
|
||
<span class="s2">"fr_CA"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"fr_CH"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="s2">"fr_BE"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="c1"># use nl --> nl_NL</span>
|
||
<span class="s2">"nl_BE"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="c1"># use pt --> pt_PT</span>
|
||
<span class="s2">"pt_BR"</span><span class="p">:</span> <span class="s2">"lang_region"</span><span class="p">,</span>
|
||
<span class="c1"># skip these languages</span>
|
||
<span class="s2">"od_IN"</span><span class="p">:</span> <span class="s2">"skip"</span><span class="p">,</span>
|
||
<span class="s2">"io_XX"</span><span class="p">:</span> <span class="s2">"skip"</span><span class="p">,</span>
|
||
<span class="s2">"tokipona_XX"</span><span class="p">:</span> <span class="s2">"skip"</span><span class="p">,</span>
|
||
<span class="p">}</span>
|
||
|
||
|
||
<div class="viewcode-block" id="quote_ddg_bangs">
|
||
<a class="viewcode-back" href="../../../dev/engines/online/duckduckgo.html#searx.engines.duckduckgo.quote_ddg_bangs">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">quote_ddg_bangs</span><span class="p">(</span><span class="n">query</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="nb">str</span><span class="p">:</span>
|
||
<span class="w"> </span><span class="sd">"""To avoid a redirect, the !bang directives in the query string are</span>
|
||
<span class="sd"> quoted."""</span>
|
||
|
||
<span class="n">_q</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
|
||
|
||
<span class="k">for</span> <span class="n">val</span> <span class="ow">in</span> <span class="n">re</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="sa">r</span><span class="s2">"(\s+)"</span><span class="p">,</span> <span class="n">query</span><span class="p">):</span>
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">val</span><span class="o">.</span><span class="n">strip</span><span class="p">():</span>
|
||
<span class="k">continue</span>
|
||
|
||
<span class="k">if</span> <span class="n">val</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="s2">"!"</span><span class="p">)</span> <span class="ow">and</span> <span class="n">get_node</span><span class="p">(</span><span class="n">EXTERNAL_BANGS</span><span class="p">,</span> <span class="n">val</span><span class="p">[</span><span class="mi">1</span><span class="p">:]):</span>
|
||
<span class="n">val</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">"'</span><span class="si">{</span><span class="n">val</span><span class="si">}</span><span class="s2">'"</span>
|
||
<span class="n">_q</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">val</span><span class="p">)</span>
|
||
<span class="k">return</span> <span class="s2">" "</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">_q</span><span class="p">)</span></div>
|
||
|
||
|
||
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">request</span><span class="p">(</span><span class="n">query</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">params</span><span class="p">:</span> <span class="s2">"OnlineParams"</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span>
|
||
|
||
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">query</span><span class="p">)</span> <span class="o">>=</span> <span class="mi">500</span><span class="p">:</span>
|
||
<span class="c1"># DDG does not accept queries with more than 499 chars</span>
|
||
<span class="n">params</span><span class="p">[</span><span class="s2">"url"</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>
|
||
<span class="k">return</span>
|
||
|
||
<span class="n">query</span> <span class="o">=</span> <span class="n">quote_ddg_bangs</span><span class="p">(</span><span class="n">query</span><span class="p">)</span>
|
||
<span class="n">eng_region</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="n">traits</span><span class="o">.</span><span class="n">get_region</span><span class="p">(</span>
|
||
<span class="n">params</span><span class="p">[</span><span class="s2">"searxng_locale"</span><span class="p">],</span>
|
||
<span class="n">traits</span><span class="o">.</span><span class="n">all_locale</span><span class="p">,</span>
|
||
<span class="p">)</span> <span class="c1"># pyright: ignore[reportAssignmentType]</span>
|
||
|
||
<span class="c1"># HTTP headers</span>
|
||
<span class="c1"># ============</span>
|
||
|
||
<span class="n">headers</span> <span class="o">=</span> <span class="n">params</span><span class="p">[</span><span class="s2">"headers"</span><span class="p">]</span>
|
||
|
||
<span class="c1"># The vqd value is generated from the query and the UA header. To be able to</span>
|
||
<span class="c1"># reuse the vqd value, the UA header must be static.</span>
|
||
<span class="n">headers</span><span class="p">[</span><span class="s2">"User-Agent"</span><span class="p">]</span> <span class="o">=</span> <span class="n">_HTTP_User_Agent</span>
|
||
|
||
<span class="n">headers</span><span class="p">[</span><span class="s2">"Sec-Fetch-Dest"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"document"</span>
|
||
<span class="n">headers</span><span class="p">[</span><span class="s2">"Sec-Fetch-Mode"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"navigate"</span>
|
||
<span class="n">headers</span><span class="p">[</span><span class="s2">"Sec-Fetch-Site"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"same-origin"</span>
|
||
<span class="n">headers</span><span class="p">[</span><span class="s2">"Sec-Fetch-User"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"?1"</span>
|
||
|
||
<span class="n">headers</span><span class="p">[</span><span class="s2">"Referer"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"https://html.duckduckgo.com/"</span>
|
||
|
||
<span class="n">ui_lang</span> <span class="o">=</span> <span class="n">params</span><span class="p">[</span><span class="s2">"searxng_locale"</span><span class="p">]</span>
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">headers</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"Accept-Language"</span><span class="p">):</span>
|
||
<span class="n">headers</span><span class="p">[</span><span class="s2">"Accept-Language"</span><span class="p">]</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="n">ui_lang</span><span class="si">}</span><span class="s2">,</span><span class="si">{</span><span class="n">ui_lang</span><span class="si">}</span><span class="s2">-</span><span class="si">{</span><span class="n">ui_lang</span><span class="o">.</span><span class="n">upper</span><span class="p">()</span><span class="si">}</span><span class="s2">;q=0.7"</span>
|
||
|
||
<span class="c1"># DDG search form (POST data)</span>
|
||
<span class="c1"># ===========================</span>
|
||
|
||
<span class="c1"># form_data: dict[str,str] = {"v": "l", "api": "d.js", "o": "json"}</span>
|
||
<span class="c1"># """The WEB-API "endpoint" is ``api``."""</span>
|
||
|
||
<span class="n">data</span> <span class="o">=</span> <span class="n">params</span><span class="p">[</span><span class="s2">"data"</span><span class="p">]</span>
|
||
<span class="n">data</span><span class="p">[</span><span class="s2">"q"</span><span class="p">]</span> <span class="o">=</span> <span class="n">query</span>
|
||
<span class="n">params</span><span class="p">[</span><span class="s2">"url"</span><span class="p">]</span> <span class="o">=</span> <span class="n">ddg_url</span>
|
||
<span class="n">params</span><span class="p">[</span><span class="s2">"method"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"POST"</span>
|
||
|
||
<span class="k">if</span> <span class="n">params</span><span class="p">[</span><span class="s2">"pageno"</span><span class="p">]</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
|
||
<span class="n">data</span><span class="p">[</span><span class="s2">"b"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">""</span>
|
||
<span class="k">else</span><span class="p">:</span>
|
||
<span class="c1"># vqd is required to request other pages after the first one</span>
|
||
<span class="n">vqd</span> <span class="o">=</span> <span class="n">get_vqd</span><span class="p">(</span><span class="n">query</span><span class="o">=</span><span class="n">query</span><span class="p">,</span> <span class="n">params</span><span class="o">=</span><span class="n">params</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="n">vqd</span><span class="p">:</span>
|
||
<span class="n">data</span><span class="p">[</span><span class="s2">"vqd"</span><span class="p">]</span> <span class="o">=</span> <span class="n">vqd</span>
|
||
<span class="k">else</span><span class="p">:</span>
|
||
<span class="c1"># Don"t try to call follow up pages without a vqd value.</span>
|
||
<span class="c1"># DDG recognizes this as a request from a bot. This lowers the</span>
|
||
<span class="c1"># reputation of the SearXNG IP and DDG starts to activate CAPTCHAs.</span>
|
||
<span class="c1"># set suspend time to zero is OK --> ddg does not block the IP</span>
|
||
<span class="k">raise</span> <span class="n">SearxEngineCaptchaException</span><span class="p">(</span>
|
||
<span class="n">suspended_time</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span>
|
||
<span class="n">message</span><span class="o">=</span><span class="sa">f</span><span class="s2">"VQD missed (page: </span><span class="si">{</span><span class="n">params</span><span class="p">[</span><span class="s1">'pageno'</span><span class="p">]</span><span class="si">}</span><span class="s2">, locale: </span><span class="si">{</span><span class="n">params</span><span class="p">[</span><span class="s1">'searxng_locale'</span><span class="p">]</span><span class="si">}</span><span class="s2">)"</span><span class="p">,</span>
|
||
<span class="p">)</span>
|
||
|
||
<span class="k">if</span> <span class="n">params</span><span class="p">[</span><span class="s2">"searxng_locale"</span><span class="p">]</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="s2">"zh"</span><span class="p">):</span>
|
||
<span class="c1"># Some locales (at least China) do not have a "next page" button and DDG</span>
|
||
<span class="c1"># will return a HTTP/2 403 Forbidden for a request of such a page.</span>
|
||
<span class="n">params</span><span class="p">[</span><span class="s2">"url"</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>
|
||
<span class="k">return</span>
|
||
|
||
<span class="n">data</span><span class="p">[</span><span class="s2">"nextParams"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">""</span>
|
||
<span class="n">data</span><span class="p">[</span><span class="s2">"api"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"d.js"</span>
|
||
<span class="n">data</span><span class="p">[</span><span class="s2">"o"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"json"</span>
|
||
<span class="n">data</span><span class="p">[</span><span class="s2">"v"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"l"</span>
|
||
|
||
<span class="n">offset</span> <span class="o">=</span> <span class="mi">10</span> <span class="o">+</span> <span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="s2">"pageno"</span><span class="p">]</span> <span class="o">-</span> <span class="mi">2</span><span class="p">)</span> <span class="o">*</span> <span class="mi">15</span> <span class="c1"># Page 2 = 10, Page 2+n = 10 + n*15</span>
|
||
<span class="n">data</span><span class="p">[</span><span class="s2">"dc"</span><span class="p">]</span> <span class="o">=</span> <span class="n">offset</span> <span class="o">+</span> <span class="mi">1</span>
|
||
<span class="n">data</span><span class="p">[</span><span class="s2">"s"</span><span class="p">]</span> <span class="o">=</span> <span class="n">offset</span>
|
||
|
||
<span class="k">if</span> <span class="n">eng_region</span> <span class="o">==</span> <span class="s2">"wt-wt"</span><span class="p">:</span>
|
||
<span class="c1"># Put empty kl in form data if language/region set to all</span>
|
||
<span class="c1"># data["kl"] = ""</span>
|
||
<span class="n">data</span><span class="p">[</span><span class="s2">"kl"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"wt-wt"</span>
|
||
<span class="k">else</span><span class="p">:</span>
|
||
<span class="n">data</span><span class="p">[</span><span class="s2">"kl"</span><span class="p">]</span> <span class="o">=</span> <span class="n">eng_region</span>
|
||
<span class="n">params</span><span class="p">[</span><span class="s2">"cookies"</span><span class="p">][</span><span class="s2">"kl"</span><span class="p">]</span> <span class="o">=</span> <span class="n">eng_region</span>
|
||
|
||
<span class="n">t_range</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="n">time_range_dict</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="s2">"time_range"</span><span class="p">]),</span> <span class="s2">""</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="n">t_range</span><span class="p">:</span>
|
||
<span class="n">data</span><span class="p">[</span><span class="s2">"df"</span><span class="p">]</span> <span class="o">=</span> <span class="n">t_range</span>
|
||
<span class="n">params</span><span class="p">[</span><span class="s2">"cookies"</span><span class="p">][</span><span class="s2">"df"</span><span class="p">]</span> <span class="o">=</span> <span class="n">t_range</span>
|
||
|
||
<span class="n">params</span><span class="p">[</span><span class="s2">"headers"</span><span class="p">][</span><span class="s2">"Content-Type"</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"application/x-www-form-urlencoded"</span>
|
||
<span class="n">params</span><span class="p">[</span><span class="s2">"headers"</span><span class="p">][</span><span class="s2">"Referer"</span><span class="p">]</span> <span class="o">=</span> <span class="n">ddg_url</span>
|
||
|
||
<span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"param headers: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">params</span><span class="p">[</span><span class="s2">"headers"</span><span class="p">])</span>
|
||
<span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"param data: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">params</span><span class="p">[</span><span class="s2">"data"</span><span class="p">])</span>
|
||
<span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">"param cookies: </span><span class="si">%s</span><span class="s2">"</span><span class="p">,</span> <span class="n">params</span><span class="p">[</span><span class="s2">"cookies"</span><span class="p">])</span>
|
||
|
||
|
||
<div class="viewcode-block" id="is_ddg_captcha">
|
||
<a class="viewcode-back" href="../../../dev/engines/online/duckduckgo.html#searx.engines.duckduckgo.is_ddg_captcha">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">is_ddg_captcha</span><span class="p">(</span><span class="n">dom</span><span class="p">:</span> <span class="n">ElementType</span><span class="p">):</span>
|
||
<span class="w"> </span><span class="sd">"""In case of CAPTCHA ddg response its own *not a Robot* dialog and is not</span>
|
||
<span class="sd"> redirected to a CAPTCHA page."""</span>
|
||
|
||
<span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">dom</span><span class="p">,</span> <span class="s2">"//form[@id='challenge-form']"</span><span class="p">))</span></div>
|
||
|
||
|
||
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">response</span><span class="p">(</span><span class="n">resp</span><span class="p">:</span> <span class="s2">"SXNG_Response"</span><span class="p">)</span> <span class="o">-></span> <span class="n">EngineResults</span><span class="p">:</span>
|
||
<span class="n">res</span> <span class="o">=</span> <span class="n">EngineResults</span><span class="p">()</span>
|
||
|
||
<span class="k">if</span> <span class="n">resp</span><span class="o">.</span><span class="n">status_code</span> <span class="o">==</span> <span class="mi">303</span><span class="p">:</span>
|
||
<span class="k">return</span> <span class="n">res</span>
|
||
|
||
<span class="n">doc</span> <span class="o">=</span> <span class="n">lxml</span><span class="o">.</span><span class="n">html</span><span class="o">.</span><span class="n">fromstring</span><span class="p">(</span><span class="n">resp</span><span class="o">.</span><span class="n">text</span><span class="p">)</span>
|
||
<span class="n">params</span> <span class="o">=</span> <span class="n">resp</span><span class="o">.</span><span class="n">search_params</span>
|
||
|
||
<span class="k">if</span> <span class="n">is_ddg_captcha</span><span class="p">(</span><span class="n">doc</span><span class="p">):</span>
|
||
<span class="c1"># set suspend time to zero is OK --> ddg does not block the IP</span>
|
||
<span class="k">raise</span> <span class="n">SearxEngineCaptchaException</span><span class="p">(</span><span class="n">suspended_time</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> <span class="n">message</span><span class="o">=</span><span class="sa">f</span><span class="s2">"CAPTCHA (</span><span class="si">{</span><span class="n">params</span><span class="p">[</span><span class="s1">'data'</span><span class="p">]</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'kl'</span><span class="p">)</span><span class="si">}</span><span class="s2">)"</span><span class="p">)</span>
|
||
|
||
<span class="n">form</span> <span class="o">=</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">doc</span><span class="p">,</span> <span class="s1">'//input[@name="vqd"]/..'</span><span class="p">)</span>
|
||
|
||
<span class="c1"># Some locales (at least China) do not have a "next page" button and DDG</span>
|
||
<span class="c1"># will return a HTTP/2 403 Forbidden for a request of such a page.</span>
|
||
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">form</span><span class="p">):</span>
|
||
<span class="n">form</span> <span class="o">=</span> <span class="n">form</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
|
||
<span class="n">form_vqd</span> <span class="o">=</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">form</span><span class="p">,</span> <span class="s1">'//input[@name="vqd"]/@value'</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span>
|
||
<span class="n">q</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="s2">"data"</span><span class="p">][</span><span class="s2">"q"</span><span class="p">])</span>
|
||
<span class="n">set_vqd</span><span class="p">(</span>
|
||
<span class="n">query</span><span class="o">=</span><span class="n">q</span><span class="p">,</span>
|
||
<span class="n">value</span><span class="o">=</span><span class="nb">str</span><span class="p">(</span><span class="n">form_vqd</span><span class="p">),</span>
|
||
<span class="n">params</span><span class="o">=</span><span class="n">resp</span><span class="o">.</span><span class="n">search_params</span><span class="p">,</span>
|
||
<span class="p">)</span>
|
||
|
||
<span class="c1"># just select "web-result" and ignore results of class "result--ad result--ad--small"</span>
|
||
<span class="k">for</span> <span class="n">div_result</span> <span class="ow">in</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">doc</span><span class="p">,</span> <span class="s1">'//div[@id="links"]/div[contains(@class, "web-result")]'</span><span class="p">):</span>
|
||
<span class="n">_title</span> <span class="o">=</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">div_result</span><span class="p">,</span> <span class="s2">".//h2/a"</span><span class="p">)</span>
|
||
<span class="n">_content</span> <span class="o">=</span> <span class="n">eval_xpath_getindex</span><span class="p">(</span><span class="n">div_result</span><span class="p">,</span> <span class="s1">'.//a[contains(@class, "result__snippet")]'</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="p">[])</span>
|
||
<span class="n">res</span><span class="o">.</span><span class="n">add</span><span class="p">(</span>
|
||
<span class="n">res</span><span class="o">.</span><span class="n">types</span><span class="o">.</span><span class="n">MainResult</span><span class="p">(</span>
|
||
<span class="n">title</span><span class="o">=</span><span class="n">extract_text</span><span class="p">(</span><span class="n">_title</span><span class="p">)</span> <span class="ow">or</span> <span class="s2">""</span><span class="p">,</span>
|
||
<span class="n">url</span><span class="o">=</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">div_result</span><span class="p">,</span> <span class="s2">".//h2/a/@href"</span><span class="p">)[</span><span class="mi">0</span><span class="p">],</span>
|
||
<span class="n">content</span><span class="o">=</span><span class="n">extract_text</span><span class="p">(</span><span class="n">_content</span><span class="p">)</span> <span class="ow">or</span> <span class="s2">""</span><span class="p">,</span>
|
||
<span class="p">)</span>
|
||
<span class="p">)</span>
|
||
|
||
<span class="n">zero_click_info_xpath</span> <span class="o">=</span> <span class="s1">'//div[@id="zero_click_abstract"]'</span>
|
||
<span class="n">zero_click</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">doc</span><span class="p">,</span> <span class="n">zero_click_info_xpath</span><span class="p">))</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span> <span class="c1"># type: ignore</span>
|
||
|
||
<span class="k">if</span> <span class="n">zero_click</span> <span class="ow">and</span> <span class="p">(</span>
|
||
<span class="s2">"Your IP address is"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">zero_click</span>
|
||
<span class="ow">and</span> <span class="s2">"Your user agent:"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">zero_click</span>
|
||
<span class="ow">and</span> <span class="s2">"URL Decoded:"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">zero_click</span>
|
||
<span class="p">):</span>
|
||
<span class="n">res</span><span class="o">.</span><span class="n">add</span><span class="p">(</span>
|
||
<span class="n">res</span><span class="o">.</span><span class="n">types</span><span class="o">.</span><span class="n">Answer</span><span class="p">(</span>
|
||
<span class="n">answer</span><span class="o">=</span><span class="n">zero_click</span><span class="p">,</span>
|
||
<span class="n">url</span><span class="o">=</span><span class="n">eval_xpath_getindex</span><span class="p">(</span><span class="n">doc</span><span class="p">,</span> <span class="s1">'//div[@id="zero_click_abstract"]/a/@href'</span><span class="p">,</span> <span class="mi">0</span><span class="p">),</span>
|
||
<span class="p">)</span>
|
||
<span class="p">)</span>
|
||
<span class="k">return</span> <span class="n">res</span>
|
||
|
||
|
||
<div class="viewcode-block" id="fetch_traits">
|
||
<a class="viewcode-back" href="../../../dev/engines/online/duckduckgo.html#searx.engines.duckduckgo.fetch_traits">[docs]</a>
|
||
<span class="k">def</span><span class="w"> </span><span class="nf">fetch_traits</span><span class="p">(</span><span class="n">engine_traits</span><span class="p">:</span> <span class="n">EngineTraits</span><span class="p">):</span>
|
||
<span class="w"> </span><span class="sd">"""Fetch languages & regions from DuckDuckGo.</span>
|
||
|
||
<span class="sd"> SearXNG's ``all`` locale maps DuckDuckGo's "All regions" (``wt-wt``).</span>
|
||
<span class="sd"> DuckDuckGo's language "Browsers preferred language" (``wt_WT``) makes no</span>
|
||
<span class="sd"> sense in a SearXNG request since SearXNG's ``all`` will not add a</span>
|
||
<span class="sd"> ``Accept-Language`` HTTP header. The value in ``engine_traits.all_locale``</span>
|
||
<span class="sd"> is ``wt-wt`` (the region).</span>
|
||
|
||
<span class="sd"> Beside regions DuckDuckGo also defines its languages by region codes. By</span>
|
||
<span class="sd"> example these are the english languages in DuckDuckGo:</span>
|
||
|
||
<span class="sd"> - en_US</span>
|
||
<span class="sd"> - en_AU</span>
|
||
<span class="sd"> - en_CA</span>
|
||
<span class="sd"> - en_GB</span>
|
||
|
||
<span class="sd"> The function :py:obj:`get_ddg_lang` evaluates DuckDuckGo's language from</span>
|
||
<span class="sd"> SearXNG's locale.</span>
|
||
|
||
<span class="sd"> """</span>
|
||
<span class="c1"># pylint: disable=too-many-branches, too-many-statements, disable=import-outside-toplevel</span>
|
||
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx.network</span><span class="w"> </span><span class="kn">import</span> <span class="n">get</span> <span class="c1"># see https://github.com/searxng/searxng/issues/762</span>
|
||
<span class="kn">from</span><span class="w"> </span><span class="nn">searx.utils</span><span class="w"> </span><span class="kn">import</span> <span class="n">js_obj_str_to_python</span>
|
||
|
||
<span class="c1"># fetch regions</span>
|
||
|
||
<span class="n">engine_traits</span><span class="o">.</span><span class="n">all_locale</span> <span class="o">=</span> <span class="s2">"wt-wt"</span>
|
||
|
||
<span class="c1"># updated from u661.js to u.7669f071a13a7daa57cb / should be updated automatically?</span>
|
||
<span class="n">resp</span> <span class="o">=</span> <span class="n">get</span><span class="p">(</span><span class="s2">"https://duckduckgo.com/dist/util/u.7669f071a13a7daa57cb.js"</span><span class="p">,</span> <span class="n">timeout</span><span class="o">=</span><span class="mi">5</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">resp</span><span class="o">.</span><span class="n">ok</span><span class="p">:</span>
|
||
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s2">"Response from DuckDuckGo regions is not OK."</span><span class="p">)</span>
|
||
|
||
<span class="n">js_code</span> <span class="o">=</span> <span class="n">extr</span><span class="p">(</span><span class="n">resp</span><span class="o">.</span><span class="n">text</span><span class="p">,</span> <span class="s2">"regions:"</span><span class="p">,</span> <span class="s2">",snippetLengths"</span><span class="p">)</span>
|
||
|
||
<span class="n">regions</span> <span class="o">=</span> <span class="n">json</span><span class="o">.</span><span class="n">loads</span><span class="p">(</span><span class="n">js_code</span><span class="p">)</span>
|
||
<span class="k">for</span> <span class="n">eng_tag</span><span class="p">,</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">regions</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
|
||
<span class="k">if</span> <span class="n">eng_tag</span> <span class="o">==</span> <span class="s2">"wt-wt"</span><span class="p">:</span>
|
||
<span class="n">engine_traits</span><span class="o">.</span><span class="n">all_locale</span> <span class="o">=</span> <span class="s2">"wt-wt"</span>
|
||
<span class="k">continue</span>
|
||
|
||
<span class="n">region</span> <span class="o">=</span> <span class="n">ddg_reg_map</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">eng_tag</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="n">region</span> <span class="o">==</span> <span class="s2">"skip"</span><span class="p">:</span>
|
||
<span class="k">continue</span>
|
||
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">region</span><span class="p">:</span>
|
||
<span class="n">eng_territory</span><span class="p">,</span> <span class="n">eng_lang</span> <span class="o">=</span> <span class="n">eng_tag</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s2">"-"</span><span class="p">)</span>
|
||
<span class="n">region</span> <span class="o">=</span> <span class="n">eng_lang</span> <span class="o">+</span> <span class="s2">"_"</span> <span class="o">+</span> <span class="n">eng_territory</span><span class="o">.</span><span class="n">upper</span><span class="p">()</span>
|
||
|
||
<span class="k">try</span><span class="p">:</span>
|
||
<span class="n">sxng_tag</span> <span class="o">=</span> <span class="n">locales</span><span class="o">.</span><span class="n">region_tag</span><span class="p">(</span><span class="n">babel</span><span class="o">.</span><span class="n">Locale</span><span class="o">.</span><span class="n">parse</span><span class="p">(</span><span class="n">region</span><span class="p">))</span>
|
||
<span class="k">except</span> <span class="n">babel</span><span class="o">.</span><span class="n">UnknownLocaleError</span><span class="p">:</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="s2">"ERROR: </span><span class="si">%s</span><span class="s2"> (</span><span class="si">%s</span><span class="s2">) -> </span><span class="si">%s</span><span class="s2"> is unknown by babel"</span> <span class="o">%</span> <span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">eng_tag</span><span class="p">,</span> <span class="n">region</span><span class="p">))</span>
|
||
<span class="k">continue</span>
|
||
|
||
<span class="n">conflict</span> <span class="o">=</span> <span class="n">engine_traits</span><span class="o">.</span><span class="n">regions</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">sxng_tag</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="n">conflict</span><span class="p">:</span>
|
||
<span class="k">if</span> <span class="n">conflict</span> <span class="o">!=</span> <span class="n">eng_tag</span><span class="p">:</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="s2">"CONFLICT: babel </span><span class="si">%s</span><span class="s2"> --> </span><span class="si">%s</span><span class="s2">, </span><span class="si">%s</span><span class="s2">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">sxng_tag</span><span class="p">,</span> <span class="n">conflict</span><span class="p">,</span> <span class="n">eng_tag</span><span class="p">))</span>
|
||
<span class="k">continue</span>
|
||
<span class="n">engine_traits</span><span class="o">.</span><span class="n">regions</span><span class="p">[</span><span class="n">sxng_tag</span><span class="p">]</span> <span class="o">=</span> <span class="n">eng_tag</span>
|
||
|
||
<span class="c1"># fetch languages</span>
|
||
|
||
<span class="n">engine_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s2">"lang_region"</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span>
|
||
|
||
<span class="n">js_code</span> <span class="o">=</span> <span class="n">extr</span><span class="p">(</span><span class="n">resp</span><span class="o">.</span><span class="n">text</span><span class="p">,</span> <span class="s2">"languages:"</span><span class="p">,</span> <span class="s2">",regions"</span><span class="p">)</span>
|
||
|
||
<span class="n">languages</span><span class="p">:</span> <span class="nb">dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="n">js_obj_str_to_python</span><span class="p">(</span><span class="n">js_code</span><span class="p">)</span>
|
||
<span class="k">for</span> <span class="n">eng_lang</span><span class="p">,</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">languages</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
|
||
<span class="k">if</span> <span class="n">eng_lang</span> <span class="o">==</span> <span class="s2">"wt_WT"</span><span class="p">:</span>
|
||
<span class="k">continue</span>
|
||
|
||
<span class="n">babel_tag</span> <span class="o">=</span> <span class="n">ddg_lang_map</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">eng_lang</span><span class="p">,</span> <span class="n">eng_lang</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="n">babel_tag</span> <span class="o">==</span> <span class="s2">"skip"</span><span class="p">:</span>
|
||
<span class="k">continue</span>
|
||
|
||
<span class="k">try</span><span class="p">:</span>
|
||
<span class="k">if</span> <span class="n">babel_tag</span> <span class="o">==</span> <span class="s2">"lang_region"</span><span class="p">:</span>
|
||
<span class="n">sxng_tag</span> <span class="o">=</span> <span class="n">locales</span><span class="o">.</span><span class="n">region_tag</span><span class="p">(</span><span class="n">babel</span><span class="o">.</span><span class="n">Locale</span><span class="o">.</span><span class="n">parse</span><span class="p">(</span><span class="n">eng_lang</span><span class="p">))</span>
|
||
<span class="n">engine_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s2">"lang_region"</span><span class="p">][</span><span class="n">sxng_tag</span><span class="p">]</span> <span class="o">=</span> <span class="n">eng_lang</span>
|
||
<span class="k">continue</span>
|
||
|
||
<span class="n">sxng_tag</span> <span class="o">=</span> <span class="n">locales</span><span class="o">.</span><span class="n">language_tag</span><span class="p">(</span><span class="n">babel</span><span class="o">.</span><span class="n">Locale</span><span class="o">.</span><span class="n">parse</span><span class="p">(</span><span class="n">babel_tag</span><span class="p">))</span>
|
||
|
||
<span class="k">except</span> <span class="n">babel</span><span class="o">.</span><span class="n">UnknownLocaleError</span><span class="p">:</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="s2">"ERROR: language </span><span class="si">%s</span><span class="s2"> (</span><span class="si">%s</span><span class="s2">) is unknown by babel"</span> <span class="o">%</span> <span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">eng_lang</span><span class="p">))</span>
|
||
<span class="k">continue</span>
|
||
|
||
<span class="n">conflict</span> <span class="o">=</span> <span class="n">engine_traits</span><span class="o">.</span><span class="n">languages</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">sxng_tag</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="n">conflict</span><span class="p">:</span>
|
||
<span class="k">if</span> <span class="n">conflict</span> <span class="o">!=</span> <span class="n">eng_lang</span><span class="p">:</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="s2">"CONFLICT: babel </span><span class="si">%s</span><span class="s2"> --> </span><span class="si">%s</span><span class="s2">, </span><span class="si">%s</span><span class="s2">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">sxng_tag</span><span class="p">,</span> <span class="n">conflict</span><span class="p">,</span> <span class="n">eng_lang</span><span class="p">))</span>
|
||
<span class="k">continue</span>
|
||
<span class="n">engine_traits</span><span class="o">.</span><span class="n">languages</span><span class="p">[</span><span class="n">sxng_tag</span><span class="p">]</span> <span class="o">=</span> <span class="n">eng_lang</span></div>
|
||
|
||
</pre></div>
|
||
</article>
|
||
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|
||
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