<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>stem.response.authchallenge — Stem 1.1.0 documentation</title> <link rel="stylesheet" href="../../../_static/haiku.css" type="text/css" /> <link rel="stylesheet" href="../../../_static/pygments.css" type="text/css" /> <link rel="stylesheet" href="../../../_static/print.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../../../', VERSION: '1.1.0', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="../../../_static/jquery.js"></script> <script type="text/javascript" src="../../../_static/underscore.js"></script> <script type="text/javascript" src="../../../_static/doctools.js"></script> <script type="text/javascript" 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href="../../../api/response.html#stem.response.authchallenge.AuthChallengeResponse">[docs]</a><span class="k">class</span> <span class="nc">AuthChallengeResponse</span><span class="p">(</span><span class="n">stem</span><span class="o">.</span><span class="n">response</span><span class="o">.</span><span class="n">ControlMessage</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> AUTHCHALLENGE query response.</span> <span class="sd"> :var str server_hash: server hash provided by tor</span> <span class="sd"> :var str server_nonce: server nonce provided by tor</span> <span class="sd"> """</span> <span class="k">def</span> <span class="nf">_parse_message</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="c"># Example:</span> <span class="c"># 250 AUTHCHALLENGE SERVERHASH=680A73C9836C4F557314EA1C4EDE54C285DB9DC89C83627401AEF9D7D27A95D5 SERVERNONCE=F8EA4B1F2C8B40EF1AF68860171605B910E3BBCABADF6FC3DB1FA064F4690E85</span> <span class="bp">self</span><span class="o">.</span><span class="n">server_hash</span> <span class="o">=</span> <span class="bp">None</span> <span class="bp">self</span><span class="o">.</span><span class="n">server_nonce</span> <span class="o">=</span> <span class="bp">None</span> <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_ok</span><span class="p">():</span> <span class="k">raise</span> <span class="n">stem</span><span class="o">.</span><span class="n">ProtocolError</span><span class="p">(</span><span class="s">"AUTHCHALLENGE response didn't have an OK status:</span><span class="se">\n</span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="bp">self</span><span class="p">)</span> <span class="k">elif</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">></span> <span class="mi">1</span><span class="p">:</span> <span class="k">raise</span> <span class="n">stem</span><span class="o">.</span><span class="n">ProtocolError</span><span class="p">(</span><span class="s">"Received multiline AUTHCHALLENGE response:</span><span class="se">\n</span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="bp">self</span><span class="p">)</span> <span class="n">line</span> <span class="o">=</span> <span class="bp">self</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="c"># sanity check that we're a AUTHCHALLENGE response</span> <span class="k">if</span> <span class="ow">not</span> <span class="n">line</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> <span class="o">==</span> <span class="s">"AUTHCHALLENGE"</span><span class="p">:</span> <span class="k">raise</span> <span class="n">stem</span><span class="o">.</span><span class="n">ProtocolError</span><span class="p">(</span><span class="s">"Message is not an AUTHCHALLENGE response (</span><span class="si">%s</span><span class="s">)"</span> <span class="o">%</span> <span class="bp">self</span><span class="p">)</span> <span class="k">if</span> <span class="n">line</span><span class="o">.</span><span class="n">is_next_mapping</span><span class="p">(</span><span class="s">"SERVERHASH"</span><span class="p">):</span> <span class="n">value</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">pop_mapping</span><span class="p">()[</span><span class="mi">1</span><span class="p">]</span> <span class="k">if</span> <span class="ow">not</span> <span class="n">stem</span><span class="o">.</span><span class="n">util</span><span class="o">.</span><span class="n">tor_tools</span><span class="o">.</span><span class="n">is_hex_digits</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="mi">64</span><span class="p">):</span> <span class="k">raise</span> <span class="n">stem</span><span class="o">.</span><span class="n">ProtocolError</span><span class="p">(</span><span class="s">"SERVERHASH has an invalid value: </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="n">value</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">server_hash</span> <span class="o">=</span> <span class="n">binascii</span><span class="o">.</span><span class="n">a2b_hex</span><span class="p">(</span><span class="n">stem</span><span class="o">.</span><span class="n">util</span><span class="o">.</span><span class="n">str_tools</span><span class="o">.</span><span class="n">_to_bytes</span><span class="p">(</span><span class="n">value</span><span class="p">))</span> <span class="k">else</span><span class="p">:</span> <span class="k">raise</span> <span class="n">stem</span><span class="o">.</span><span class="n">ProtocolError</span><span class="p">(</span><span class="s">"Missing SERVERHASH mapping: </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="n">line</span><span class="p">)</span> <span class="k">if</span> <span class="n">line</span><span class="o">.</span><span class="n">is_next_mapping</span><span class="p">(</span><span class="s">"SERVERNONCE"</span><span class="p">):</span> <span class="n">value</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">pop_mapping</span><span class="p">()[</span><span class="mi">1</span><span class="p">]</span> <span class="k">if</span> <span class="ow">not</span> <span class="n">stem</span><span class="o">.</span><span class="n">util</span><span class="o">.</span><span class="n">tor_tools</span><span class="o">.</span><span class="n">is_hex_digits</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="mi">64</span><span class="p">):</span> <span class="k">raise</span> <span class="n">stem</span><span class="o">.</span><span class="n">ProtocolError</span><span class="p">(</span><span class="s">"SERVERNONCE has an invalid value: </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="n">value</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">server_nonce</span> <span class="o">=</span> <span class="n">binascii</span><span class="o">.</span><span class="n">a2b_hex</span><span class="p">(</span><span class="n">stem</span><span class="o">.</span><span class="n">util</span><span class="o">.</span><span class="n">str_tools</span><span class="o">.</span><span class="n">_to_bytes</span><span class="p">(</span><span class="n">value</span><span class="p">))</span> <span class="k">else</span><span class="p">:</span> <span class="k">raise</span> <span class="n">stem</span><span class="o">.</span><span class="n">ProtocolError</span><span class="p">(</span><span class="s">"Missing SERVERNONCE mapping: </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="n">line</span><span class="p">)</span></div> </pre></div> </div> <div class="bottomnav"> </div> <div class="footer"> </div> </body> </html>