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<!-- ==================== CLASS DESCRIPTION ==================== -->
<h1 class="epydoc">Class IS_IPV4</h1><span class="codelink"><a href="web2py.gluon.validators-pysrc.html#IS_IPV4">source&nbsp;code</a></span><br /><br />
<pre class="base-tree">
object --+    
         |    
 <a href="web2py.gluon.validators.Validator-class.html">Validator</a> --+
             |
            <strong class="uidshort">IS_IPV4</strong>
</pre>

<hr />
<pre class="literalblock">

Checks if field's value is an IP version 4 address in decimal form. Can
be set to force addresses from certain range.

IPv4 regex taken from: http://regexlib.com/REDetails.aspx?regexp_id=1411

Arguments:

minip: lowest allowed address; accepts:
       str, eg. 192.168.0.1
       list or tuple of octets, eg. [192, 168, 0, 1]
maxip: highest allowed address; same as above
invert: True to allow addresses only from outside of given range; note
        that range boundaries are not matched this way
is_localhost: localhost address treatment:
              None (default): indifferent
              True (enforce): query address must match localhost address
                              (127.0.0.1)
              False (forbid): query address must not match localhost
                              address
is_private: same as above, except that query address is checked against
            two address ranges: 172.16.0.0 - 172.31.255.255 and
            192.168.0.0 - 192.168.255.255
is_automatic: same as above, except that query address is checked against
              one address range: 169.254.0.0 - 169.254.255.255

Minip and maxip may also be lists or tuples of addresses in all above
forms (str, int, list / tuple), allowing setup of multiple address ranges:

    minip = (minip1, minip2, ... minipN)
               |       |           |
               |       |           |
    maxip = (maxip1, maxip2, ... maxipN)

Longer iterable will be truncated to match length of shorter one.

Examples::

    #Check for valid IPv4 address:
    INPUT(_type='text', _name='name', requires=IS_IPV4())

    #Check for valid IPv4 address belonging to specific range:
    INPUT(_type='text', _name='name',
        requires=IS_IPV4(minip='100.200.0.0', maxip='100.200.255.255'))

    #Check for valid IPv4 address belonging to either 100.110.0.0 -
    #100.110.255.255 or 200.50.0.0 - 200.50.0.255 address range:
    INPUT(_type='text', _name='name',
        requires=IS_IPV4(minip=('100.110.0.0', '200.50.0.0'),
                         maxip=('100.110.255.255', '200.50.0.255')))

    #Check for valid IPv4 address belonging to private address space:
    INPUT(_type='text', _name='name', requires=IS_IPV4(is_private=True))

    #Check for valid IPv4 address that is not a localhost address:
    INPUT(_type='text', _name='name', requires=IS_IPV4(is_localhost=False))

&gt;&gt;&gt; IS_IPV4()('1.2.3.4')
('1.2.3.4', None)
&gt;&gt;&gt; IS_IPV4()('255.255.255.255')
('255.255.255.255', None)
&gt;&gt;&gt; IS_IPV4()('1.2.3.4 ')
('1.2.3.4 ', 'enter valid IPv4 address')
&gt;&gt;&gt; IS_IPV4()('1.2.3.4.5')
('1.2.3.4.5', 'enter valid IPv4 address')
&gt;&gt;&gt; IS_IPV4()('123.123')
('123.123', 'enter valid IPv4 address')
&gt;&gt;&gt; IS_IPV4()('1111.2.3.4')
('1111.2.3.4', 'enter valid IPv4 address')
&gt;&gt;&gt; IS_IPV4()('0111.2.3.4')
('0111.2.3.4', 'enter valid IPv4 address')
&gt;&gt;&gt; IS_IPV4()('256.2.3.4')
('256.2.3.4', 'enter valid IPv4 address')
&gt;&gt;&gt; IS_IPV4()('300.2.3.4')
('300.2.3.4', 'enter valid IPv4 address')
&gt;&gt;&gt; IS_IPV4(minip='1.2.3.4', maxip='1.2.3.4')('1.2.3.4')
('1.2.3.4', None)
&gt;&gt;&gt; IS_IPV4(minip='1.2.3.5', maxip='1.2.3.9', error_message='bad ip')('1.2.3.4')
('1.2.3.4', 'bad ip')
&gt;&gt;&gt; IS_IPV4(maxip='1.2.3.4', invert=True)('127.0.0.1')
('127.0.0.1', None)
&gt;&gt;&gt; IS_IPV4(maxip='1.2.3.4', invert=True)('1.2.3.4')
('1.2.3.4', 'enter valid IPv4 address')
&gt;&gt;&gt; IS_IPV4(is_localhost=True)('127.0.0.1')
('127.0.0.1', None)
&gt;&gt;&gt; IS_IPV4(is_localhost=True)('1.2.3.4')
('1.2.3.4', 'enter valid IPv4 address')
&gt;&gt;&gt; IS_IPV4(is_localhost=False)('127.0.0.1')
('127.0.0.1', 'enter valid IPv4 address')
&gt;&gt;&gt; IS_IPV4(maxip='100.0.0.0', is_localhost=True)('127.0.0.1')
('127.0.0.1', 'enter valid IPv4 address')

</pre><br /><br />

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          <td><span class="summary-sig"><a href="web2py.gluon.validators.IS_IPV4-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">self</span>,
        <span class="summary-sig-arg">minip</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string">0.0.0.0</code><code class="variable-quote">'</code></span>,
        <span class="summary-sig-arg">maxip</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string">255.255.255.255</code><code class="variable-quote">'</code></span>,
        <span class="summary-sig-arg">invert</span>=<span class="summary-sig-default">True</span>,
        <span class="summary-sig-arg">is_localhost</span>=<span class="summary-sig-default">1</span>,
        <span class="summary-sig-arg">is_private</span>=<span class="summary-sig-default">1</span>,
        <span class="summary-sig-arg">is_automatic</span>=<span class="summary-sig-default">1</span>,
        <span class="summary-sig-arg">error_message</span>=<span class="summary-sig-default"><code class="variable-quote">'</code><code class="variable-string">enter valid IPv4 address</code><code class="variable-quote">'</code></span>)</span><br />
      x.__init__(...) initializes x; see x.__class__.__doc__ for 
      signature</td>
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            <span class="codelink"><a href="web2py.gluon.validators-pysrc.html#IS_IPV4.__call__">source&nbsp;code</a></span>
            
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      <span class="summary-type">&nbsp;</span>
    </td><td class="summary">
        <a href="web2py.gluon.validators.IS_IPV4-class.html#regex" class="summary-name">regex</a> = <code title="re.compile(r'^(([1-9]?\d|1\d\d|2[0-4]\d|25[0-5])\.){3}([1-9]?\d|1\d\d|\
2[0-4]\d|25[0-5])$')">re.compile(r'^<code class="re-group">(</code><code class="re-group">(</code><code class="re-group">[</code>1<code class="re-op">-</code>9<code class="re-group">]</code><code class="re-op">?</code>\d<code class="re-op">|</code>1\d\d<code class="re-op">|</code>2<code class="re-group">[</code>0<code class="re-op">-</code>4<code class="re-group">]</code>\d<code class="re-op">|</code>25<code class="re-group">[</code>0<code class="re-op">-</code>5<code class="re-group">]</code><code class="re-group">)</code>\.<code class="re-group">)</code><code class="re-op">{3}</code><code class="variable-ellipsis">...</code></code>
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      <span class="summary-type">&nbsp;</span>
    </td><td class="summary">
        <a name="numbers"></a><span class="summary-name">numbers</span> = <code title="(16777216, 65536, 256, 1)"><code class="variable-group">(</code>16777216<code class="variable-op">, </code>65536<code class="variable-op">, </code>256<code class="variable-op">, </code>1<code class="variable-group">)</code></code>
    </td>
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      <span class="summary-type">&nbsp;</span>
    </td><td class="summary">
        <a name="localhost"></a><span class="summary-name">localhost</span> = <code title="2130706433">2130706433</code>
    </td>
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    <td width="15%" align="right" valign="top" class="summary">
      <span class="summary-type">&nbsp;</span>
    </td><td class="summary">
        <a name="private"></a><span class="summary-name">private</span> = <code title="((2886729728, 2886795263), (3232235520, 3232301055))"><code class="variable-group">(</code><code class="variable-group">(</code>2886729728<code class="variable-op">, </code>2886795263<code class="variable-group">)</code><code class="variable-op">, </code><code class="variable-group">(</code>3232235520<code class="variable-op">, </code>3232301055<code class="variable-group">)</code><code class="variable-group">)</code></code>
    </td>
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    <td width="15%" align="right" valign="top" class="summary">
      <span class="summary-type">&nbsp;</span>
    </td><td class="summary">
        <a name="automatic"></a><span class="summary-name">automatic</span> = <code title="(2851995648, 2852061183)"><code class="variable-group">(</code>2851995648<code class="variable-op">, </code>2852061183<code class="variable-group">)</code></code>
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  <tr valign="top"><td>
  <h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">self</span>,
        <span class="sig-arg">minip</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string">0.0.0.0</code><code class="variable-quote">'</code></span>,
        <span class="sig-arg">maxip</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string">255.255.255.255</code><code class="variable-quote">'</code></span>,
        <span class="sig-arg">invert</span>=<span class="sig-default">True</span>,
        <span class="sig-arg">is_localhost</span>=<span class="sig-default">1</span>,
        <span class="sig-arg">is_private</span>=<span class="sig-default">1</span>,
        <span class="sig-arg">is_automatic</span>=<span class="sig-default">1</span>,
        <span class="sig-arg">error_message</span>=<span class="sig-default"><code class="variable-quote">'</code><code class="variable-string">enter valid IPv4 address</code><code class="variable-quote">'</code></span>)</span>
    <br /><em class="fname">(Constructor)</em>
  </h3>
  </td><td align="right" valign="top"
    ><span class="codelink"><a href="web2py.gluon.validators-pysrc.html#IS_IPV4.__init__">source&nbsp;code</a></span>&nbsp;
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  <h3 class="epydoc">regex</h3>
  
  <dl class="fields">
  </dl>
  <dl class="fields">
    <dt>Value:</dt>
      <dd><table><tr><td><pre class="variable">
re.compile(r'^<code class="re-group">(</code><code class="re-group">(</code><code class="re-group">[</code>1<code class="re-op">-</code>9<code class="re-group">]</code><code class="re-op">?</code>\d<code class="re-op">|</code>1\d\d<code class="re-op">|</code>2<code class="re-group">[</code>0<code class="re-op">-</code>4<code class="re-group">]</code>\d<code class="re-op">|</code>25<code class="re-group">[</code>0<code class="re-op">-</code>5<code class="re-group">]</code><code class="re-group">)</code>\.<code class="re-group">)</code><code class="re-op">{3}</code><code class="re-group">(</code><code class="re-group">[</code>1<code class="re-op">-</code>9<code class="re-group">]</code><code class="re-op">?</code>\d<code class="re-op">|</code>1\d\d<code class="re-op">|</code><span class="variable-linewrap"><img src="crarr.png" alt="\" /></span>
2<code class="re-group">[</code>0<code class="re-op">-</code>4<code class="re-group">]</code>\d<code class="re-op">|</code>25<code class="re-group">[</code>0<code class="re-op">-</code>5<code class="re-group">]</code><code class="re-group">)</code>$')
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