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<h1>Source code for django.core.validators</h1><div class="highlight"><pre>
<span></span><span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">unicode_literals</span>
<span class="kn">import</span> <span class="nn">re</span>
<span class="kn">from</span> <span class="nn">django.core.exceptions</span> <span class="k">import</span> <span class="n">ValidationError</span>
<span class="kn">from</span> <span class="nn">django.utils</span> <span class="k">import</span> <span class="n">six</span>
<span class="kn">from</span> <span class="nn">django.utils.deconstruct</span> <span class="k">import</span> <span class="n">deconstructible</span>
<span class="kn">from</span> <span class="nn">django.utils.encoding</span> <span class="k">import</span> <span class="n">force_text</span>
<span class="kn">from</span> <span class="nn">django.utils.ipv6</span> <span class="k">import</span> <span class="n">is_valid_ipv6_address</span>
<span class="kn">from</span> <span class="nn">django.utils.six.moves.urllib.parse</span> <span class="k">import</span> <span class="n">urlsplit</span><span class="p">,</span> <span class="n">urlunsplit</span>
<span class="kn">from</span> <span class="nn">django.utils.translation</span> <span class="k">import</span> <span class="n">ugettext_lazy</span> <span class="k">as</span> <span class="n">_</span><span class="p">,</span> <span class="n">ungettext_lazy</span>
<span class="c1"># These values, if given to validate(), will trigger the self.required check.</span>
<span class="n">EMPTY_VALUES</span> <span class="o">=</span> <span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="s1">''</span><span class="p">,</span> <span class="p">[],</span> <span class="p">(),</span> <span class="p">{})</span>
<span class="nd">@deconstructible</span>
<div class="viewcode-block" id="RegexValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.RegexValidator">[docs]</a><span class="k">class</span> <span class="nc">RegexValidator</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="n">regex</span> <span class="o">=</span> <span class="s1">''</span>
<span class="n">message</span> <span class="o">=</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid value.'</span><span class="p">)</span>
<span class="n">code</span> <span class="o">=</span> <span class="s1">'invalid'</span>
<span class="n">inverse_match</span> <span class="o">=</span> <span class="kc">False</span>
<span class="n">flags</span> <span class="o">=</span> <span class="mi">0</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">regex</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">message</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">inverse_match</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">flags</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="k">if</span> <span class="n">regex</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">regex</span> <span class="o">=</span> <span class="n">regex</span>
<span class="k">if</span> <span class="n">message</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">=</span> <span class="n">message</span>
<span class="k">if</span> <span class="n">code</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">code</span> <span class="o">=</span> <span class="n">code</span>
<span class="k">if</span> <span class="n">inverse_match</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">inverse_match</span> <span class="o">=</span> <span class="n">inverse_match</span>
<span class="k">if</span> <span class="n">flags</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">flags</span> <span class="o">=</span> <span class="n">flags</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">flags</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">regex</span><span class="p">,</span> <span class="n">six</span><span class="o">.</span><span class="n">string_types</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s2">"If the flags are set, regex must be a regular expression string."</span><span class="p">)</span>
<span class="c1"># Compile the regex if it was not passed pre-compiled.</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">regex</span><span class="p">,</span> <span class="n">six</span><span class="o">.</span><span class="n">string_types</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">regex</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">regex</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">flags</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Validates that the input matches the regular expression</span>
<span class="sd"> if inverse_match is False, otherwise raises ValidationError.</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="ow">not</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">inverse_match</span> <span class="ow">is</span> <span class="ow">not</span> <span class="nb">bool</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">regex</span><span class="o">.</span><span class="n">search</span><span class="p">(</span>
<span class="n">force_text</span><span class="p">(</span><span class="n">value</span><span class="p">)))):</span>
<span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span>
<span class="k">return</span> <span class="p">(</span>
<span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="n">RegexValidator</span><span class="p">)</span> <span class="ow">and</span>
<span class="bp">self</span><span class="o">.</span><span class="n">regex</span><span class="o">.</span><span class="n">pattern</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">regex</span><span class="o">.</span><span class="n">pattern</span> <span class="ow">and</span>
<span class="bp">self</span><span class="o">.</span><span class="n">regex</span><span class="o">.</span><span class="n">flags</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">regex</span><span class="o">.</span><span class="n">flags</span> <span class="ow">and</span>
<span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">message</span><span class="p">)</span> <span class="ow">and</span>
<span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">code</span><span class="p">)</span> <span class="ow">and</span>
<span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">inverse_match</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">inverse_match</span><span class="p">)</span>
<span class="p">)</span>
<span class="k">def</span> <span class="nf">__ne__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span>
<span class="k">return</span> <span class="ow">not</span> <span class="p">(</span><span class="bp">self</span> <span class="o">==</span> <span class="n">other</span><span class="p">)</span></div>
<span class="nd">@deconstructible</span>
<div class="viewcode-block" id="URLValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.URLValidator">[docs]</a><span class="k">class</span> <span class="nc">URLValidator</span><span class="p">(</span><span class="n">RegexValidator</span><span class="p">):</span>
<span class="n">ul</span> <span class="o">=</span> <span class="s1">'</span><span class="se">\u00a1</span><span class="s1">-</span><span class="se">\uffff</span><span class="s1">'</span> <span class="c1"># unicode letters range (must be a unicode string, not a raw string)</span>
<span class="c1"># IP patterns</span>
<span class="n">ipv4_re</span> <span class="o">=</span> <span class="s1">r'(?:25[0-5]|2[0-4]\d|[0-1]?\d?\d)(?:\.(?:25[0-5]|2[0-4]\d|[0-1]?\d?\d))</span><span class="si">{3}</span><span class="s1">'</span>
<span class="n">ipv6_re</span> <span class="o">=</span> <span class="s1">r'\[[0-9a-f:\.]+\]'</span> <span class="c1"># (simple regex, validated later)</span>
<span class="c1"># Host patterns</span>
<span class="n">hostname_re</span> <span class="o">=</span> <span class="s1">r'[a-z'</span> <span class="o">+</span> <span class="n">ul</span> <span class="o">+</span> <span class="s1">r'0-9](?:[a-z'</span> <span class="o">+</span> <span class="n">ul</span> <span class="o">+</span> <span class="s1">r'0-9-]*[a-z'</span> <span class="o">+</span> <span class="n">ul</span> <span class="o">+</span> <span class="s1">r'0-9])?'</span>
<span class="n">domain_re</span> <span class="o">=</span> <span class="s1">r'(?:\.(?!-)[a-z'</span> <span class="o">+</span> <span class="n">ul</span> <span class="o">+</span> <span class="s1">r'0-9-]+(?<!-))*'</span>
<span class="n">tld_re</span> <span class="o">=</span> <span class="p">(</span>
<span class="s1">'\.'</span> <span class="c1"># dot</span>
<span class="s1">'(?!-)'</span> <span class="c1"># can't start with a dash</span>
<span class="s1">'(?:[a-z'</span> <span class="o">+</span> <span class="n">ul</span> <span class="o">+</span> <span class="s1">'-]{2,}'</span> <span class="c1"># domain label</span>
<span class="s1">'|xn--[a-z0-9]+)'</span> <span class="c1"># or punycode label</span>
<span class="s1">'(?<!-)'</span> <span class="c1"># can't end with a dash</span>
<span class="s1">'\.?'</span> <span class="c1"># may have a trailing dot</span>
<span class="p">)</span>
<span class="n">host_re</span> <span class="o">=</span> <span class="s1">'('</span> <span class="o">+</span> <span class="n">hostname_re</span> <span class="o">+</span> <span class="n">domain_re</span> <span class="o">+</span> <span class="n">tld_re</span> <span class="o">+</span> <span class="s1">'|localhost)'</span>
<span class="n">regex</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span>
<span class="s1">r'^(?:[a-z0-9\.\-]*)://'</span> <span class="c1"># scheme is validated separately</span>
<span class="s1">r'(?:\S+(?::\S*)?@)?'</span> <span class="c1"># user:pass authentication</span>
<span class="s1">r'(?:'</span> <span class="o">+</span> <span class="n">ipv4_re</span> <span class="o">+</span> <span class="s1">'|'</span> <span class="o">+</span> <span class="n">ipv6_re</span> <span class="o">+</span> <span class="s1">'|'</span> <span class="o">+</span> <span class="n">host_re</span> <span class="o">+</span> <span class="s1">')'</span>
<span class="s1">r'(?::\d{2,5})?'</span> <span class="c1"># port</span>
<span class="s1">r'(?:[/?#][^\s]*)?'</span> <span class="c1"># resource path</span>
<span class="s1">r'\Z'</span><span class="p">,</span> <span class="n">re</span><span class="o">.</span><span class="n">IGNORECASE</span><span class="p">)</span>
<span class="n">message</span> <span class="o">=</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid URL.'</span><span class="p">)</span>
<span class="n">schemes</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'http'</span><span class="p">,</span> <span class="s1">'https'</span><span class="p">,</span> <span class="s1">'ftp'</span><span class="p">,</span> <span class="s1">'ftps'</span><span class="p">]</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">schemes</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="nb">super</span><span class="p">(</span><span class="n">URLValidator</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="k">if</span> <span class="n">schemes</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">schemes</span> <span class="o">=</span> <span class="n">schemes</span>
<span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="n">value</span> <span class="o">=</span> <span class="n">force_text</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="c1"># Check first if the scheme is valid</span>
<span class="n">scheme</span> <span class="o">=</span> <span class="n">value</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">'://'</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
<span class="k">if</span> <span class="n">scheme</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">schemes</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span>
<span class="c1"># Then check full URL</span>
<span class="k">try</span><span class="p">:</span>
<span class="nb">super</span><span class="p">(</span><span class="n">URLValidator</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__call__</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="k">except</span> <span class="n">ValidationError</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
<span class="c1"># Trivial case failed. Try for possible IDN domain</span>
<span class="k">if</span> <span class="n">value</span><span class="p">:</span>
<span class="n">scheme</span><span class="p">,</span> <span class="n">netloc</span><span class="p">,</span> <span class="n">path</span><span class="p">,</span> <span class="n">query</span><span class="p">,</span> <span class="n">fragment</span> <span class="o">=</span> <span class="n">urlsplit</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">netloc</span> <span class="o">=</span> <span class="n">netloc</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s1">'idna'</span><span class="p">)</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s1">'ascii'</span><span class="p">)</span> <span class="c1"># IDN -> ACE</span>
<span class="k">except</span> <span class="ne">UnicodeError</span><span class="p">:</span> <span class="c1"># invalid domain part</span>
<span class="k">raise</span> <span class="n">e</span>
<span class="n">url</span> <span class="o">=</span> <span class="n">urlunsplit</span><span class="p">((</span><span class="n">scheme</span><span class="p">,</span> <span class="n">netloc</span><span class="p">,</span> <span class="n">path</span><span class="p">,</span> <span class="n">query</span><span class="p">,</span> <span class="n">fragment</span><span class="p">))</span>
<span class="nb">super</span><span class="p">(</span><span class="n">URLValidator</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__call__</span><span class="p">(</span><span class="n">url</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span>
<span class="k">else</span><span class="p">:</span>
<span class="c1"># Now verify IPv6 in the netloc part</span>
<span class="n">host_match</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">search</span><span class="p">(</span><span class="s1">r'^\[(.+)\](?::\d{2,5})?$'</span><span class="p">,</span> <span class="n">urlsplit</span><span class="p">(</span><span class="n">value</span><span class="p">)</span><span class="o">.</span><span class="n">netloc</span><span class="p">)</span>
<span class="k">if</span> <span class="n">host_match</span><span class="p">:</span>
<span class="n">potential_ip</span> <span class="o">=</span> <span class="n">host_match</span><span class="o">.</span><span class="n">groups</span><span class="p">()[</span><span class="mi">0</span><span class="p">]</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">validate_ipv6_address</span><span class="p">(</span><span class="n">potential_ip</span><span class="p">)</span>
<span class="k">except</span> <span class="n">ValidationError</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span>
<span class="n">url</span> <span class="o">=</span> <span class="n">value</span></div>
<span class="n">integer_validator</span> <span class="o">=</span> <span class="n">RegexValidator</span><span class="p">(</span>
<span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="s1">'^-?\d+\Z'</span><span class="p">),</span>
<span class="n">message</span><span class="o">=</span><span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid integer.'</span><span class="p">),</span>
<span class="n">code</span><span class="o">=</span><span class="s1">'invalid'</span><span class="p">,</span>
<span class="p">)</span>
<span class="k">def</span> <span class="nf">validate_integer</span><span class="p">(</span><span class="n">value</span><span class="p">):</span>
<span class="k">return</span> <span class="n">integer_validator</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="nd">@deconstructible</span>
<div class="viewcode-block" id="EmailValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.EmailValidator">[docs]</a><span class="k">class</span> <span class="nc">EmailValidator</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="n">message</span> <span class="o">=</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid email address.'</span><span class="p">)</span>
<span class="n">code</span> <span class="o">=</span> <span class="s1">'invalid'</span>
<span class="n">user_regex</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span>
<span class="s2">r"(^[-!#$%&'*+/=?^_`</span><span class="si">{}</span><span class="s2">|~0-9A-Z]+(\.[-!#$%&'*+/=?^_`</span><span class="si">{}</span><span class="s2">|~0-9A-Z]+)*\Z"</span> <span class="c1"># dot-atom</span>
<span class="s1">r'|^"([\001-\010\013\014\016-\037!#-\[\]-\177]|</span><span class="se">\\</span><span class="s1">[\001-\011\013\014\016-\177])*"\Z)'</span><span class="p">,</span> <span class="c1"># quoted-string</span>
<span class="n">re</span><span class="o">.</span><span class="n">IGNORECASE</span><span class="p">)</span>
<span class="n">domain_regex</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span>
<span class="c1"># max length of the domain is 249: 254 (max email length) minus one</span>
<span class="c1"># period, two characters for the TLD, @ sign, & one character before @.</span>
<span class="s1">r'(?:[A-Z0-9](?:[A-Z0-9-]{0,247}[A-Z0-9])?\.)+(?:[A-Z]{2,6}|[A-Z0-9-]{2,}(?<!-))\Z'</span><span class="p">,</span>
<span class="n">re</span><span class="o">.</span><span class="n">IGNORECASE</span><span class="p">)</span>
<span class="n">literal_regex</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span>
<span class="c1"># literal form, ipv4 or ipv6 address (SMTP 4.1.3)</span>
<span class="s1">r'\[([A-f0-9:\.]+)\]\Z'</span><span class="p">,</span>
<span class="n">re</span><span class="o">.</span><span class="n">IGNORECASE</span><span class="p">)</span>
<span class="n">domain_whitelist</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'localhost'</span><span class="p">]</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">message</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">whitelist</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="k">if</span> <span class="n">message</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">=</span> <span class="n">message</span>
<span class="k">if</span> <span class="n">code</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">code</span> <span class="o">=</span> <span class="n">code</span>
<span class="k">if</span> <span class="n">whitelist</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">domain_whitelist</span> <span class="o">=</span> <span class="n">whitelist</span>
<span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="n">value</span> <span class="o">=</span> <span class="n">force_text</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">value</span> <span class="ow">or</span> <span class="s1">'@'</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">value</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span>
<span class="n">user_part</span><span class="p">,</span> <span class="n">domain_part</span> <span class="o">=</span> <span class="n">value</span><span class="o">.</span><span class="n">rsplit</span><span class="p">(</span><span class="s1">'@'</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="bp">self</span><span class="o">.</span><span class="n">user_regex</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="n">user_part</span><span class="p">):</span>
<span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span>
<span class="k">if</span> <span class="p">(</span><span class="n">domain_part</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">domain_whitelist</span> <span class="ow">and</span>
<span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">validate_domain_part</span><span class="p">(</span><span class="n">domain_part</span><span class="p">)):</span>
<span class="c1"># Try for possible IDN domain-part</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">domain_part</span> <span class="o">=</span> <span class="n">domain_part</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s1">'idna'</span><span class="p">)</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s1">'ascii'</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">validate_domain_part</span><span class="p">(</span><span class="n">domain_part</span><span class="p">):</span>
<span class="k">return</span>
<span class="k">except</span> <span class="ne">UnicodeError</span><span class="p">:</span>
<span class="k">pass</span>
<span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">validate_domain_part</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">domain_part</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">domain_regex</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="n">domain_part</span><span class="p">):</span>
<span class="k">return</span> <span class="kc">True</span>
<span class="n">literal_match</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">literal_regex</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="n">domain_part</span><span class="p">)</span>
<span class="k">if</span> <span class="n">literal_match</span><span class="p">:</span>
<span class="n">ip_address</span> <span class="o">=</span> <span class="n">literal_match</span><span class="o">.</span><span class="n">group</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">validate_ipv46_address</span><span class="p">(</span><span class="n">ip_address</span><span class="p">)</span>
<span class="k">return</span> <span class="kc">True</span>
<span class="k">except</span> <span class="n">ValidationError</span><span class="p">:</span>
<span class="k">pass</span>
<span class="k">return</span> <span class="kc">False</span>
<span class="k">def</span> <span class="nf">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span>
<span class="k">return</span> <span class="p">(</span>
<span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="n">EmailValidator</span><span class="p">)</span> <span class="ow">and</span>
<span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">domain_whitelist</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">domain_whitelist</span><span class="p">)</span> <span class="ow">and</span>
<span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">message</span><span class="p">)</span> <span class="ow">and</span>
<span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">code</span><span class="p">)</span>
<span class="p">)</span></div>
<span class="n">validate_email</span> <span class="o">=</span> <span class="n">EmailValidator</span><span class="p">()</span>
<span class="n">slug_re</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="s1">r'^[-a-zA-Z0-9_]+\Z'</span><span class="p">)</span>
<span class="n">validate_slug</span> <span class="o">=</span> <span class="n">RegexValidator</span><span class="p">(</span>
<span class="n">slug_re</span><span class="p">,</span>
<span class="n">_</span><span class="p">(</span><span class="s2">"Enter a valid 'slug' consisting of letters, numbers, underscores or hyphens."</span><span class="p">),</span>
<span class="s1">'invalid'</span>
<span class="p">)</span>
<span class="n">ipv4_re</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="s1">r'^(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d))</span><span class="si">{3}</span><span class="s1">\Z'</span><span class="p">)</span>
<span class="n">validate_ipv4_address</span> <span class="o">=</span> <span class="n">RegexValidator</span><span class="p">(</span><span class="n">ipv4_re</span><span class="p">,</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid IPv4 address.'</span><span class="p">),</span> <span class="s1">'invalid'</span><span class="p">)</span>
<div class="viewcode-block" id="validate_ipv6_address"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.validate_ipv6_address">[docs]</a><span class="k">def</span> <span class="nf">validate_ipv6_address</span><span class="p">(</span><span class="n">value</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">is_valid_ipv6_address</span><span class="p">(</span><span class="n">value</span><span class="p">):</span>
<span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid IPv6 address.'</span><span class="p">),</span> <span class="n">code</span><span class="o">=</span><span class="s1">'invalid'</span><span class="p">)</span></div>
<div class="viewcode-block" id="validate_ipv46_address"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.validate_ipv46_address">[docs]</a><span class="k">def</span> <span class="nf">validate_ipv46_address</span><span class="p">(</span><span class="n">value</span><span class="p">):</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">validate_ipv4_address</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="k">except</span> <span class="n">ValidationError</span><span class="p">:</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">validate_ipv6_address</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="k">except</span> <span class="n">ValidationError</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid IPv4 or IPv6 address.'</span><span class="p">),</span> <span class="n">code</span><span class="o">=</span><span class="s1">'invalid'</span><span class="p">)</span></div>
<span class="n">ip_address_validator_map</span> <span class="o">=</span> <span class="p">{</span>
<span class="s1">'both'</span><span class="p">:</span> <span class="p">([</span><span class="n">validate_ipv46_address</span><span class="p">],</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid IPv4 or IPv6 address.'</span><span class="p">)),</span>
<span class="s1">'ipv4'</span><span class="p">:</span> <span class="p">([</span><span class="n">validate_ipv4_address</span><span class="p">],</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid IPv4 address.'</span><span class="p">)),</span>
<span class="s1">'ipv6'</span><span class="p">:</span> <span class="p">([</span><span class="n">validate_ipv6_address</span><span class="p">],</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Enter a valid IPv6 address.'</span><span class="p">)),</span>
<span class="p">}</span>
<span class="k">def</span> <span class="nf">ip_address_validators</span><span class="p">(</span><span class="n">protocol</span><span class="p">,</span> <span class="n">unpack_ipv4</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Depending on the given parameters returns the appropriate validators for</span>
<span class="sd"> the GenericIPAddressField.</span>
<span class="sd"> This code is here, because it is exactly the same for the model and the form field.</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="n">protocol</span> <span class="o">!=</span> <span class="s1">'both'</span> <span class="ow">and</span> <span class="n">unpack_ipv4</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span>
<span class="s2">"You can only use `unpack_ipv4` if `protocol` is set to 'both'"</span><span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="k">return</span> <span class="n">ip_address_validator_map</span><span class="p">[</span><span class="n">protocol</span><span class="o">.</span><span class="n">lower</span><span class="p">()]</span>
<span class="k">except</span> <span class="ne">KeyError</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">"The protocol '</span><span class="si">%s</span><span class="s2">' is unknown. Supported: </span><span class="si">%s</span><span class="s2">"</span>
<span class="o">%</span> <span class="p">(</span><span class="n">protocol</span><span class="p">,</span> <span class="nb">list</span><span class="p">(</span><span class="n">ip_address_validator_map</span><span class="p">)))</span>
<span class="n">comma_separated_int_list_re</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="s1">'^[\d,]+\Z'</span><span class="p">)</span>
<span class="n">validate_comma_separated_integer_list</span> <span class="o">=</span> <span class="n">RegexValidator</span><span class="p">(</span>
<span class="n">comma_separated_int_list_re</span><span class="p">,</span>
<span class="n">_</span><span class="p">(</span><span class="s1">'Enter only digits separated by commas.'</span><span class="p">),</span>
<span class="s1">'invalid'</span>
<span class="p">)</span>
<span class="nd">@deconstructible</span>
<span class="k">class</span> <span class="nc">BaseValidator</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="n">compare</span> <span class="o">=</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">:</span> <span class="n">a</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">b</span>
<span class="n">clean</span> <span class="o">=</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">x</span><span class="p">:</span> <span class="n">x</span>
<span class="n">message</span> <span class="o">=</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Ensure this value is </span><span class="si">%(limit_value)s</span><span class="s1"> (it is </span><span class="si">%(show_value)s</span><span class="s1">).'</span><span class="p">)</span>
<span class="n">code</span> <span class="o">=</span> <span class="s1">'limit_value'</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">limit_value</span><span class="p">,</span> <span class="n">message</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">limit_value</span> <span class="o">=</span> <span class="n">limit_value</span>
<span class="k">if</span> <span class="n">message</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">=</span> <span class="n">message</span>
<span class="k">def</span> <span class="nf">__call__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="n">cleaned</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">clean</span><span class="p">(</span><span class="n">value</span><span class="p">)</span>
<span class="n">params</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'limit_value'</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">limit_value</span><span class="p">,</span> <span class="s1">'show_value'</span><span class="p">:</span> <span class="n">cleaned</span><span class="p">,</span> <span class="s1">'value'</span><span class="p">:</span> <span class="n">value</span><span class="p">}</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">compare</span><span class="p">(</span><span class="n">cleaned</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">limit_value</span><span class="p">):</span>
<span class="k">raise</span> <span class="n">ValidationError</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span><span class="p">,</span> <span class="n">code</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">code</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">def</span> <span class="nf">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span>
<span class="k">return</span> <span class="p">(</span>
<span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">__class__</span><span class="p">)</span> <span class="ow">and</span>
<span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">limit_value</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">limit_value</span><span class="p">)</span>
<span class="ow">and</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">message</span><span class="p">)</span>
<span class="ow">and</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">code</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">code</span><span class="p">)</span>
<span class="p">)</span>
<span class="nd">@deconstructible</span>
<div class="viewcode-block" id="MaxValueValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.MaxValueValidator">[docs]</a><span class="k">class</span> <span class="nc">MaxValueValidator</span><span class="p">(</span><span class="n">BaseValidator</span><span class="p">):</span>
<span class="n">compare</span> <span class="o">=</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">:</span> <span class="n">a</span> <span class="o">></span> <span class="n">b</span>
<span class="n">message</span> <span class="o">=</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Ensure this value is less than or equal to </span><span class="si">%(limit_value)s</span><span class="s1">.'</span><span class="p">)</span>
<span class="n">code</span> <span class="o">=</span> <span class="s1">'max_value'</span></div>
<span class="nd">@deconstructible</span>
<div class="viewcode-block" id="MinValueValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.MinValueValidator">[docs]</a><span class="k">class</span> <span class="nc">MinValueValidator</span><span class="p">(</span><span class="n">BaseValidator</span><span class="p">):</span>
<span class="n">compare</span> <span class="o">=</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">:</span> <span class="n">a</span> <span class="o"><</span> <span class="n">b</span>
<span class="n">message</span> <span class="o">=</span> <span class="n">_</span><span class="p">(</span><span class="s1">'Ensure this value is greater than or equal to </span><span class="si">%(limit_value)s</span><span class="s1">.'</span><span class="p">)</span>
<span class="n">code</span> <span class="o">=</span> <span class="s1">'min_value'</span></div>
<span class="nd">@deconstructible</span>
<div class="viewcode-block" id="MinLengthValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.MinLengthValidator">[docs]</a><span class="k">class</span> <span class="nc">MinLengthValidator</span><span class="p">(</span><span class="n">BaseValidator</span><span class="p">):</span>
<span class="n">compare</span> <span class="o">=</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">:</span> <span class="n">a</span> <span class="o"><</span> <span class="n">b</span>
<span class="n">clean</span> <span class="o">=</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">x</span><span class="p">:</span> <span class="nb">len</span><span class="p">(</span><span class="n">x</span><span class="p">)</span>
<span class="n">message</span> <span class="o">=</span> <span class="n">ungettext_lazy</span><span class="p">(</span>
<span class="s1">'Ensure this value has at least </span><span class="si">%(limit_value)d</span><span class="s1"> character (it has </span><span class="si">%(show_value)d</span><span class="s1">).'</span><span class="p">,</span>
<span class="s1">'Ensure this value has at least </span><span class="si">%(limit_value)d</span><span class="s1"> characters (it has </span><span class="si">%(show_value)d</span><span class="s1">).'</span><span class="p">,</span>
<span class="s1">'limit_value'</span><span class="p">)</span>
<span class="n">code</span> <span class="o">=</span> <span class="s1">'min_length'</span></div>
<span class="nd">@deconstructible</span>
<div class="viewcode-block" id="MaxLengthValidator"><a class="viewcode-back" href="../../../ref/validators.html#django.core.validators.MaxLengthValidator">[docs]</a><span class="k">class</span> <span class="nc">MaxLengthValidator</span><span class="p">(</span><span class="n">BaseValidator</span><span class="p">):</span>
<span class="n">compare</span> <span class="o">=</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">:</span> <span class="n">a</span> <span class="o">></span> <span class="n">b</span>
<span class="n">clean</span> <span class="o">=</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">x</span><span class="p">:</span> <span class="nb">len</span><span class="p">(</span><span class="n">x</span><span class="p">)</span>
<span class="n">message</span> <span class="o">=</span> <span class="n">ungettext_lazy</span><span class="p">(</span>
<span class="s1">'Ensure this value has at most </span><span class="si">%(limit_value)d</span><span class="s1"> character (it has </span><span class="si">%(show_value)d</span><span class="s1">).'</span><span class="p">,</span>
<span class="s1">'Ensure this value has at most </span><span class="si">%(limit_value)d</span><span class="s1"> characters (it has </span><span class="si">%(show_value)d</span><span class="s1">).'</span><span class="p">,</span>
<span class="s1">'limit_value'</span><span class="p">)</span>
<span class="n">code</span> <span class="o">=</span> <span class="s1">'max_length'</span></div>
</pre></div>
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