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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="vala-lookup-example"></a>Vala example: Lookup a password</h2></div></div></div>
<p>Here's how to lookup a password in the running secret service,
			like gnome-keyring or ksecretservice.</p>
<p>Each stored password has a set of attributes which are
			used to lookup the password. If multiple passwords match the
			lookup attributes, then the one stored most recently is returned.</p>
<p>These examples use <a class="link" href="vala-examples.html#vala-schema-example" title="Vala example: Define a password schema">the example
			schema</a>.</p>
<p>This first example looks up a password asynchronously, and is
			appropriate for GUI applications so that the UI does not block.</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
2
3
4
5
6
7
8</pre></td>
        <td class="listing_code"><pre class="programlisting"><span class="n">var</span> <span class="n">attributes</span> <span class="o">=</span> <span class="n">new</span> <span class="n">GLib</span><span class="p">.</span><span class="n">HashTable</span><span class="o">&lt;</span><span class="n">string</span><span class="p">,</span><span class="n">string</span><span class="o">&gt;</span> <span class="p">();</span>
<span class="n">attributes</span><span class="p">[</span><span class="s">&quot;number&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="s">&quot;8&quot;</span><span class="p">;</span>
<span class="n">attributes</span><span class="p">[</span><span class="s">&quot;string&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="s">&quot;eight&quot;</span><span class="p">;</span>
<span class="n">attributes</span><span class="p">[</span><span class="s">&quot;even&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="s">&quot;true&quot;</span><span class="p">;</span>

<span class="n">Secret</span><span class="p">.</span><span class="n">password_lookupv</span><span class="p">.</span><span class="n">begin</span> <span class="p">(</span><span class="n">example_schema</span><span class="p">,</span> <span class="n">attributes</span><span class="p">,</span> <span class="n">null</span><span class="p">,</span> <span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="n">async_res</span><span class="p">)</span> <span class="o">=&gt;</span> <span class="p">{</span>
	<span class="n">string</span> <span class="n">password</span> <span class="o">=</span> <span class="n">Secret</span><span class="p">.</span><span class="n">password_lookup</span><span class="p">.</span><span class="n">end</span> <span class="p">(</span><span class="n">async_res</span><span class="p">);</span>
<span class="p">});</span></pre></td>
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<p>This next example looks up a password synchronously. The function
			call will block until the lookup completes. So this is appropriate for
			non GUI applications.</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
2
3</pre></td>
        <td class="listing_code"><pre class="programlisting"><span class="n">string</span> <span class="n">password</span> <span class="o">=</span> <span class="n">Secret</span><span class="p">.</span><span class="n">password_lookup_sync</span> <span class="p">(</span><span class="n">example_schema</span><span class="p">,</span> <span class="n">attributes</span><span class="p">,</span> <span class="n">null</span><span class="p">,</span>
                                               <span class="s">&quot;number&quot;</span><span class="p">,</span> <span class="mi">9</span><span class="p">,</span> <span class="s">&quot;string&quot;</span><span class="p">,</span> <span class="s">&quot;nine&quot;</span><span class="p">,</span> <span class="s">&quot;even&quot;</span><span class="p">,</span> <span class="nb">false</span><span class="p">);</span>
<span class="cm">/* password will be null, if no matching password found */</span></pre></td>
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