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vsphere-automation-sdk-python/vsphere/6.0/_modules/vmware/vapi/provider/authentication.html
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<h1>Source code for vmware.vapi.provider.authentication</h1><div class="highlight"><pre>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd">Authentication API Provider filter</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="n">__author__</span> <span class="o">=</span> <span class="s">&#39;VMware, Inc.&#39;</span>
<span class="n">__copyright__</span> <span class="o">=</span> <span class="s">&#39;Copyright 2011-2014 VMware, Inc. All rights reserved. -- VMware Confidential&#39;</span>
<span class="kn">import</span> <span class="nn">logging</span>
<span class="kn">import</span> <span class="nn">six</span>
<span class="k">try</span><span class="p">:</span>
<span class="kn">import</span> <span class="nn">simplejson</span> <span class="kn">as</span> <span class="nn">json</span>
<span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span>
<span class="kn">import</span> <span class="nn">json</span>
<span class="kn">from</span> <span class="nn">vmware.vapi.core</span> <span class="kn">import</span> <span class="n">MethodResult</span>
<span class="kn">from</span> <span class="nn">vmware.vapi.lib.std</span> <span class="kn">import</span> <span class="p">(</span>
<span class="n">make_std_error_def</span><span class="p">,</span> <span class="n">make_error_value_from_msg_id</span><span class="p">)</span>
<span class="kn">from</span> <span class="nn">vmware.vapi.lib.constants</span> <span class="kn">import</span> <span class="n">SCHEME_ID</span>
<span class="kn">from</span> <span class="nn">vmware.vapi.provider.filter</span> <span class="kn">import</span> <span class="n">ApiProviderFilter</span>
<span class="c"># Configure logging</span>
<span class="n">logger</span> <span class="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">getLogger</span><span class="p">(</span><span class="n">__name__</span><span class="p">)</span>
<span class="n">NO_AUTH</span> <span class="o">=</span> <span class="s">&#39;com.vmware.vapi.std.security.no_authentication&#39;</span>
<div class="viewcode-block" id="load_metadata"><a class="viewcode-back" href="../../../../vmware.vapi.provider.html#vmware.vapi.provider.authentication.load_metadata">[docs]</a><span class="k">def</span> <span class="nf">load_metadata</span><span class="p">():</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Load the metadata from the json file</span>
<span class="sd"> :rtype: :class:`dict`</span>
<span class="sd"> :return: Authentication metadata</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="kn">from</span> <span class="nn">vmware.vapi.settings</span> <span class="kn">import</span> <span class="n">config</span>
<span class="n">cfg</span> <span class="o">=</span> <span class="n">config</span><span class="o">.</span><span class="n">cfg</span>
<span class="k">if</span> <span class="n">cfg</span> <span class="ow">and</span> <span class="n">cfg</span><span class="o">.</span><span class="n">has_section</span><span class="p">(</span><span class="n">__name__</span><span class="p">):</span>
<span class="n">metadata_file</span> <span class="o">=</span> <span class="n">cfg</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">__name__</span><span class="p">,</span> <span class="s">&#39;file&#39;</span><span class="p">)</span>
<span class="n">metadata</span> <span class="o">=</span> <span class="bp">None</span>
<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">metadata_file</span><span class="p">,</span> <span class="s">&#39;r&#39;</span><span class="p">)</span> <span class="k">as</span> <span class="n">fp</span><span class="p">:</span>
<span class="n">metadata</span> <span class="o">=</span> <span class="n">fp</span><span class="o">.</span><span class="n">read</span><span class="p">()</span>
<span class="n">authn_metadata</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">metadata</span><span class="p">)</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;authentication&#39;</span><span class="p">,</span> <span class="p">{})</span> <span class="c"># pylint: disable=E1103</span>
<span class="k">return</span> <span class="n">authn_metadata</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;product&#39;</span><span class="p">,</span> <span class="p">{})</span>
</div>
<div class="viewcode-block" id="AuthenticationFilter"><a class="viewcode-back" href="../../../../vmware.vapi.provider.html#vmware.vapi.provider.authentication.AuthenticationFilter">[docs]</a><span class="k">class</span> <span class="nc">AuthenticationFilter</span><span class="p">(</span><span class="n">ApiProviderFilter</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> AuthenticationFilter in API Provider chain enforces the authentication</span>
<span class="sd"> schemes specified in the authentication metadata file</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">next_provider</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Initialize AuthenticationFilter</span>
<span class="sd"> :type next_provider: :class:`vmware.vapi.core.ApiProvider` or ``None``</span>
<span class="sd"> :param next_provider: API Provider to invoke the requests</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_metadata</span> <span class="o">=</span> <span class="n">load_metadata</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_internal_server_error_def</span> <span class="o">=</span> <span class="n">make_std_error_def</span><span class="p">(</span>
<span class="s">&#39;com.vmware.vapi.std.errors.internal_server_error&#39;</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_unauthenticated_error_def</span> <span class="o">=</span> <span class="n">make_std_error_def</span><span class="p">(</span>
<span class="s">&#39;com.vmware.vapi.std.errors.unauthenticated&#39;</span><span class="p">)</span>
<span class="n">ApiProviderFilter</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span>
<span class="bp">self</span><span class="p">,</span> <span class="n">next_provider</span><span class="p">,</span>
<span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">_internal_server_error_def</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unauthenticated_error_def</span><span class="p">])</span>
<span class="k">def</span> <span class="nf">_get_scheme</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scheme_rules</span><span class="p">,</span> <span class="n">key</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Extract the scheme identifier</span>
<span class="sd"> :type scheme_rules: :class:`dict`</span>
<span class="sd"> :param scheme_rules: Scheme rules</span>
<span class="sd"> :type key: :class:`str`</span>
<span class="sd"> :param key: Key to retrieve the scheme name from scheme rules</span>
<span class="sd"> :rtype: :class:`str`</span>
<span class="sd"> :return: Scheme identifier</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">scheme_ids</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">scheme_names</span> <span class="o">=</span> <span class="n">scheme_rules</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">scheme_names</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scheme_names</span><span class="p">,</span> <span class="nb">list</span><span class="p">):</span>
<span class="n">scheme_names</span> <span class="o">=</span> <span class="p">[</span><span class="n">scheme_names</span><span class="p">]</span>
<span class="k">if</span> <span class="n">scheme_names</span><span class="p">:</span>
<span class="c"># Scheme name is present, get the scheme id</span>
<span class="n">scheme_data</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metadata</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;schemes&#39;</span><span class="p">)</span>
<span class="k">for</span> <span class="n">scheme_name</span> <span class="ow">in</span> <span class="n">scheme_names</span><span class="p">:</span>
<span class="n">scheme_info</span> <span class="o">=</span> <span class="n">scheme_data</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">scheme_name</span><span class="p">)</span>
<span class="k">if</span> <span class="n">scheme_info</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="c"># Scheme info is not present</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="n">scheme_name</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">scheme_id</span> <span class="o">=</span> <span class="n">scheme_info</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;authenticationScheme&#39;</span><span class="p">)</span>
<span class="n">scheme_ids</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">scheme_id</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="c"># Scheme rule is present but there is no authn scheme</span>
<span class="n">scheme_ids</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">NO_AUTH</span><span class="p">)</span>
<span class="k">return</span> <span class="n">scheme_ids</span>
<span class="k">except</span> <span class="ne">KeyError</span><span class="p">:</span>
<span class="k">pass</span>
<span class="k">def</span> <span class="nf">_get_package_specific_scheme</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">service_id</span><span class="p">,</span> <span class="n">operation_id</span><span class="p">):</span> <span class="c"># pylint: disable=W0613</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Get the package specific scheme for the input operation</span>
<span class="sd"> :type service_id: :class:`str`</span>
<span class="sd"> :param service_id: Service identifier</span>
<span class="sd"> :type operation_id: :class:`str`</span>
<span class="sd"> :param operation_id: Operation identifier</span>
<span class="sd"> :rtype: :class:`str`</span>
<span class="sd"> :return: Authentication scheme identifier</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">package_name</span> <span class="o">=</span> <span class="s">&#39;.&#39;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">service_id</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">&#39;.&#39;</span><span class="p">)[:</span><span class="o">-</span><span class="mi">1</span><span class="p">])</span>
<span class="n">package_data</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metadata</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;packages&#39;</span><span class="p">)</span>
<span class="n">packages_match</span> <span class="o">=</span> <span class="p">[</span><span class="n">package</span> <span class="k">for</span> <span class="n">package</span> <span class="ow">in</span> <span class="n">six</span><span class="o">.</span><span class="n">iterkeys</span><span class="p">(</span><span class="n">package_data</span><span class="p">)</span>
<span class="k">if</span> <span class="n">package</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="n">package_name</span><span class="p">)]</span>
<span class="k">if</span> <span class="n">packages_match</span><span class="p">:</span>
<span class="n">closest_package</span> <span class="o">=</span> <span class="nb">max</span><span class="p">(</span><span class="n">packages_match</span><span class="p">,</span> <span class="n">key</span><span class="o">=</span><span class="nb">len</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_scheme</span><span class="p">(</span><span class="n">package_data</span><span class="p">,</span> <span class="n">closest_package</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">_get_service_specific_scheme</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">service_id</span><span class="p">,</span> <span class="n">operation_id</span><span class="p">):</span> <span class="c"># pylint: disable=W0613</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Get the service specific scheme for the input operation</span>
<span class="sd"> :type service_id: :class:`str`</span>
<span class="sd"> :param service_id: Service identifier</span>
<span class="sd"> :type operation_id: :class:`str`</span>
<span class="sd"> :param operation_id: Operation identifier</span>
<span class="sd"> :rtype: :class:`str`</span>
<span class="sd"> :return: Authentication scheme identifier</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">service_data</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metadata</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;services&#39;</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_scheme</span><span class="p">(</span><span class="n">service_data</span><span class="p">,</span>
<span class="s">&#39;</span><span class="si">%s</span><span class="s">&#39;</span> <span class="o">%</span> <span class="n">service_id</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">_get_operation_specific_scheme</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">service_id</span><span class="p">,</span> <span class="n">operation_id</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Get the operation specific scheme for the input operation</span>
<span class="sd"> :type service_id: :class:`str`</span>
<span class="sd"> :param service_id: Service identifier</span>
<span class="sd"> :type operation_id: :class:`str`</span>
<span class="sd"> :param operation_id: Operation identifier</span>
<span class="sd"> :rtype: :class:`str`</span>
<span class="sd"> :return: Authentication scheme identifier</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">operation_data</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_metadata</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&#39;operations&#39;</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_scheme</span><span class="p">(</span><span class="n">operation_data</span><span class="p">,</span>
<span class="s">&#39;</span><span class="si">%s</span><span class="s">.</span><span class="si">%s</span><span class="s">&#39;</span> <span class="o">%</span> <span class="p">(</span><span class="n">service_id</span><span class="p">,</span> <span class="n">operation_id</span><span class="p">))</span>
<span class="k">def</span> <span class="nf">_validate_scheme</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">ctx</span><span class="p">,</span> <span class="n">service_id</span><span class="p">,</span> <span class="n">operation_id</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Validate the authentication scheme present in</span>
<span class="sd"> the security context</span>
<span class="sd"> :type ctx: :class:`vmware.vapi.core.ExecutionContext`</span>
<span class="sd"> :param ctx: Execution context for this method</span>
<span class="sd"> :type service_id: :class:`str`</span>
<span class="sd"> :param service_id: Service identifier</span>
<span class="sd"> :type operation_id: :class:`str`</span>
<span class="sd"> :param operation_id: Operation identifier</span>
<span class="sd"> :rtype: :class:`vmware.vapi.core.MethodResult`</span>
<span class="sd"> :return: MethodResult object with unauthenticated error</span>
<span class="sd"> in case of a scheme mismatch, else None</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">request_scheme</span> <span class="o">=</span> <span class="n">ctx</span><span class="o">.</span><span class="n">security_context</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">SCHEME_ID</span><span class="p">)</span>
<span class="k">for</span> <span class="n">scheme_fn</span> <span class="ow">in</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">_get_operation_specific_scheme</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_get_service_specific_scheme</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_get_package_specific_scheme</span><span class="p">]:</span>
<span class="n">schemes</span> <span class="o">=</span> <span class="n">scheme_fn</span><span class="p">(</span><span class="n">service_id</span><span class="p">,</span> <span class="n">operation_id</span><span class="p">)</span>
<span class="k">if</span> <span class="n">schemes</span><span class="p">:</span>
<span class="k">if</span> <span class="n">request_scheme</span> <span class="ow">in</span> <span class="n">schemes</span><span class="p">:</span>
<span class="k">break</span>
<span class="k">elif</span> <span class="n">NO_AUTH</span> <span class="ow">in</span> <span class="n">schemes</span><span class="p">:</span>
<span class="k">break</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">error_value</span> <span class="o">=</span> <span class="n">make_error_value_from_msg_id</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_unauthenticated_error_def</span><span class="p">,</span>
<span class="s">&#39;vapi.security.authentication.scheme&#39;</span><span class="p">,</span>
<span class="nb">str</span><span class="p">(</span><span class="n">schemes</span><span class="p">),</span> <span class="n">request_scheme</span><span class="p">)</span>
<span class="k">return</span> <span class="n">MethodResult</span><span class="p">(</span><span class="n">error</span><span class="o">=</span><span class="n">error_value</span><span class="p">)</span>
<div class="viewcode-block" id="AuthenticationFilter.invoke"><a class="viewcode-back" href="../../../../vmware.vapi.provider.html#vmware.vapi.provider.authentication.AuthenticationFilter.invoke">[docs]</a> <span class="k">def</span> <span class="nf">invoke</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">service_id</span><span class="p">,</span> <span class="n">operation_id</span><span class="p">,</span> <span class="n">input_value</span><span class="p">,</span> <span class="n">ctx</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Invoke an API request</span>
<span class="sd"> :type service_id: :class:`str`</span>
<span class="sd"> :param service_id: Service identifier</span>
<span class="sd"> :type operation_id: :class:`str`</span>
<span class="sd"> :param operation_id: Operation identifier</span>
<span class="sd"> :type input_value: :class:`vmware.vapi.data.value.StructValue`</span>
<span class="sd"> :param input_value: Method input parameters</span>
<span class="sd"> :type ctx: :class:`vmware.vapi.core.ExecutionContext`</span>
<span class="sd"> :param ctx: Execution context for this method</span>
<span class="sd"> :rtype: :class:`vmware.vapi.core.MethodResult`</span>
<span class="sd"> :return: Result of the method invocation</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">method_result</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_validate_scheme</span><span class="p">(</span><span class="n">ctx</span><span class="p">,</span> <span class="n">service_id</span><span class="p">,</span> <span class="n">operation_id</span><span class="p">)</span>
<span class="k">except</span> <span class="ne">ValueError</span> <span class="k">as</span> <span class="n">err</span><span class="p">:</span>
<span class="n">scheme_rule_key</span> <span class="o">=</span> <span class="n">err</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="n">error_value</span> <span class="o">=</span> <span class="n">make_error_value_from_msg_id</span><span class="p">(</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_internal_server_error_def</span><span class="p">,</span>
<span class="s">&#39;vapi.security.authentication.scheme.invalid&#39;</span><span class="p">,</span>
<span class="n">scheme_rule_key</span><span class="p">)</span>
<span class="n">method_result</span> <span class="o">=</span> <span class="n">MethodResult</span><span class="p">(</span><span class="n">error</span><span class="o">=</span><span class="n">error_value</span><span class="p">)</span>
<span class="k">if</span> <span class="n">method_result</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
<span class="k">return</span> <span class="n">method_result</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="n">ApiProviderFilter</span><span class="o">.</span><span class="n">invoke</span><span class="p">(</span>
<span class="bp">self</span><span class="p">,</span> <span class="n">service_id</span><span class="p">,</span> <span class="n">operation_id</span><span class="p">,</span> <span class="n">input_value</span><span class="p">,</span> <span class="n">ctx</span><span class="p">)</span>
<span class="c"># Single AuthenticationFilter instance</span></div></div>
<span class="n">_authn_filter</span> <span class="o">=</span> <span class="n">AuthenticationFilter</span><span class="p">()</span>
<div class="viewcode-block" id="get_provider"><a class="viewcode-back" href="../../../../vmware.vapi.provider.html#vmware.vapi.provider.authentication.get_provider">[docs]</a><span class="k">def</span> <span class="nf">get_provider</span><span class="p">():</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd"> Returns the singleton AuthenticationFilter instance</span>
<span class="sd"> :rtype: :class:`vmware.vapi.provider.authentication.AuthenticationFilter`</span>
<span class="sd"> :return: AuthenticationFilter instance</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">return</span> <span class="n">_authn_filter</span></div>
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