
<h1>ssl.cpp</h1>
<div class="highlight"><pre><span></span><span class="cp">#include</span> <span class="cpf">&quot;options.hpp&quot;</span><span class="cp"></span>

<span class="cp">#include</span> <span class="cpf">&lt;proton/connection_options.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/connection.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/container.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/error_condition.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/listen_handler.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/listener.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/message.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/messaging_handler.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/ssl.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/tracker.hpp&gt;</span><span class="cp"></span>
<span class="cp">#include</span> <span class="cpf">&lt;proton/transport.hpp&gt;</span><span class="cp"></span>

<span class="cp">#include</span> <span class="cpf">&lt;iostream&gt;</span><span class="cp"></span>

<span class="cp">#include</span> <span class="cpf">&quot;fake_cpp11.hpp&quot;</span><span class="cp"></span>

<span class="k">using</span> <span class="n">proton</span><span class="o">::</span><span class="n">connection_options</span><span class="p">;</span>
<span class="k">using</span> <span class="n">proton</span><span class="o">::</span><span class="n">ssl_client_options</span><span class="p">;</span>
<span class="k">using</span> <span class="n">proton</span><span class="o">::</span><span class="n">ssl_server_options</span><span class="p">;</span>
<span class="k">using</span> <span class="n">proton</span><span class="o">::</span><span class="n">ssl_certificate</span><span class="p">;</span>

<span class="c1">// Helper functions defined below.</span>
<span class="kt">bool</span> <span class="nf">using_OpenSSL</span><span class="p">();</span>
<span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">platform_CA</span><span class="p">(</span><span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&amp;</span><span class="n">base_name</span><span class="p">);</span>
<span class="n">ssl_certificate</span> <span class="nf">platform_certificate</span><span class="p">(</span><span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&amp;</span><span class="n">base_name</span><span class="p">,</span> <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&amp;</span><span class="n">passwd</span><span class="p">);</span>
<span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">find_CN</span><span class="p">(</span><span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&amp;</span><span class="p">);</span>

<span class="k">namespace</span> <span class="p">{</span>
    <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">verify_full</span><span class="p">(</span><span class="s">&quot;full&quot;</span><span class="p">);</span>  <span class="c1">// Normal verification</span>
    <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">verify_noname</span><span class="p">(</span><span class="s">&quot;noname&quot;</span><span class="p">);</span> <span class="c1">// Skip matching host name against the certificate</span>
    <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">verify_fail</span><span class="p">(</span><span class="s">&quot;fail&quot;</span><span class="p">);</span>  <span class="c1">// Force name mismatch failure</span>
    <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">verify</span><span class="p">(</span><span class="n">verify_full</span><span class="p">);</span>  <span class="c1">// Default for example</span>
    <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">cert_directory</span><span class="p">;</span>
<span class="p">}</span>


<span class="k">struct</span> <span class="nl">server_handler</span> <span class="p">:</span> <span class="k">public</span> <span class="n">proton</span><span class="o">::</span><span class="n">messaging_handler</span> <span class="p">{</span>
    <span class="n">proton</span><span class="o">::</span><span class="n">listener</span> <span class="n">listener</span><span class="p">;</span>

    <span class="kt">void</span> <span class="nf">on_connection_open</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">connection</span> <span class="o">&amp;</span><span class="n">c</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
        <span class="n">std</span><span class="o">::</span><span class="n">cout</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Inbound server connection connected via SSL.  Protocol: &quot;</span> <span class="o">&lt;&lt;</span>
            <span class="n">c</span><span class="p">.</span><span class="n">transport</span><span class="p">().</span><span class="n">ssl</span><span class="p">().</span><span class="n">protocol</span><span class="p">()</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
        <span class="n">listener</span><span class="p">.</span><span class="n">stop</span><span class="p">();</span>  <span class="c1">// Just expecting the one connection.</span>

        <span class="c1">// Go and do default inbound open stuff too</span>
        <span class="n">messaging_handler</span><span class="o">::</span><span class="n">on_connection_open</span><span class="p">(</span><span class="n">c</span><span class="p">);</span>
    <span class="p">}</span>

    <span class="kt">void</span> <span class="nf">on_transport_error</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">transport</span> <span class="o">&amp;</span><span class="n">t</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
        <span class="n">listener</span><span class="p">.</span><span class="n">stop</span><span class="p">();</span>
    <span class="p">}</span>

    <span class="kt">void</span> <span class="nf">on_message</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">delivery</span> <span class="o">&amp;</span><span class="p">,</span> <span class="n">proton</span><span class="o">::</span><span class="n">message</span> <span class="o">&amp;</span><span class="n">m</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
        <span class="n">std</span><span class="o">::</span><span class="n">cout</span> <span class="o">&lt;&lt;</span> <span class="n">m</span><span class="p">.</span><span class="n">body</span><span class="p">()</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
    <span class="p">}</span>
<span class="p">};</span>


<span class="k">class</span> <span class="nc">hello_world_direct</span> <span class="o">:</span> <span class="k">public</span> <span class="n">proton</span><span class="o">::</span><span class="n">messaging_handler</span> <span class="p">{</span>
  <span class="k">private</span><span class="o">:</span>
    <span class="k">class</span> <span class="nc">listener_open_handler</span> <span class="o">:</span> <span class="k">public</span> <span class="n">proton</span><span class="o">::</span><span class="n">listen_handler</span> <span class="p">{</span>
        <span class="kt">void</span> <span class="n">on_open</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">listener</span><span class="o">&amp;</span> <span class="n">l</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
            <span class="n">std</span><span class="o">::</span><span class="n">ostringstream</span> <span class="n">url</span><span class="p">;</span>
            <span class="n">url</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;//:&quot;</span> <span class="o">&lt;&lt;</span> <span class="n">l</span><span class="p">.</span><span class="n">port</span><span class="p">()</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;/example&quot;</span><span class="p">;</span> <span class="c1">// Connect to the actual port</span>
            <span class="n">l</span><span class="p">.</span><span class="n">container</span><span class="p">().</span><span class="n">open_sender</span><span class="p">(</span><span class="n">url</span><span class="p">.</span><span class="n">str</span><span class="p">());</span>
        <span class="p">}</span>
    <span class="p">};</span>

    <span class="n">listener_open_handler</span> <span class="n">listen_handler</span><span class="p">;</span>
    <span class="n">server_handler</span> <span class="n">s_handler</span><span class="p">;</span>

  <span class="k">public</span><span class="o">:</span>
    <span class="kt">void</span> <span class="n">on_container_start</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">container</span> <span class="o">&amp;</span><span class="n">c</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
        <span class="c1">// Configure listener.  Details vary by platform.</span>
        <span class="n">ssl_certificate</span> <span class="n">server_cert</span> <span class="o">=</span> <span class="n">platform_certificate</span><span class="p">(</span><span class="s">&quot;tserver&quot;</span><span class="p">,</span> <span class="s">&quot;tserverpw&quot;</span><span class="p">);</span>
        <span class="n">ssl_server_options</span> <span class="nf">ssl_srv</span><span class="p">(</span><span class="n">server_cert</span><span class="p">);</span>
        <span class="n">connection_options</span> <span class="n">server_opts</span><span class="p">;</span>
        <span class="n">server_opts</span><span class="p">.</span><span class="n">ssl_server_options</span><span class="p">(</span><span class="n">ssl_srv</span><span class="p">).</span><span class="n">handler</span><span class="p">(</span><span class="n">s_handler</span><span class="p">);</span>
        <span class="n">c</span><span class="p">.</span><span class="n">server_connection_options</span><span class="p">(</span><span class="n">server_opts</span><span class="p">);</span>

        <span class="c1">// Configure client with a Certificate Authority database</span>
        <span class="c1">// populated with the server&#39;s self signed certificate.</span>
        <span class="n">connection_options</span> <span class="n">client_opts</span><span class="p">;</span>
        <span class="k">if</span> <span class="p">(</span><span class="n">verify</span> <span class="o">==</span> <span class="n">verify_full</span><span class="p">)</span> <span class="p">{</span>
            <span class="n">ssl_client_options</span> <span class="n">ssl_cli</span><span class="p">(</span><span class="n">platform_CA</span><span class="p">(</span><span class="s">&quot;tserver&quot;</span><span class="p">));</span>
            <span class="n">client_opts</span><span class="p">.</span><span class="n">ssl_client_options</span><span class="p">(</span><span class="n">ssl_cli</span><span class="p">);</span>
            <span class="c1">// The next line is optional in normal use.  Since the</span>
            <span class="c1">// example uses IP addresses in the connection string, use</span>
            <span class="c1">// the virtual_host option to set the server host name</span>
            <span class="c1">// used for certificate verification:</span>
            <span class="n">client_opts</span><span class="p">.</span><span class="n">virtual_host</span><span class="p">(</span><span class="s">&quot;test_server&quot;</span><span class="p">);</span>
        <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="n">verify</span> <span class="o">==</span> <span class="n">verify_noname</span><span class="p">)</span> <span class="p">{</span>
            <span class="c1">// Downgrade the verification from VERIFY_PEER_NAME to VERIFY_PEER.</span>
            <span class="n">ssl_client_options</span> <span class="n">ssl_cli</span><span class="p">(</span><span class="n">platform_CA</span><span class="p">(</span><span class="s">&quot;tserver&quot;</span><span class="p">),</span> <span class="n">proton</span><span class="o">::</span><span class="n">ssl</span><span class="o">::</span><span class="n">VERIFY_PEER</span><span class="p">);</span>
            <span class="n">client_opts</span><span class="p">.</span><span class="n">ssl_client_options</span><span class="p">(</span><span class="n">ssl_cli</span><span class="p">);</span>
        <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="n">verify</span> <span class="o">==</span> <span class="n">verify_fail</span><span class="p">)</span> <span class="p">{</span>
            <span class="n">ssl_client_options</span> <span class="n">ssl_cli</span><span class="p">(</span><span class="n">platform_CA</span><span class="p">(</span><span class="s">&quot;tserver&quot;</span><span class="p">));</span>
            <span class="n">client_opts</span><span class="p">.</span><span class="n">ssl_client_options</span><span class="p">(</span><span class="n">ssl_cli</span><span class="p">);</span>
            <span class="n">client_opts</span><span class="p">.</span><span class="n">virtual_host</span><span class="p">(</span><span class="s">&quot;wrong_name_for_server&quot;</span><span class="p">);</span> <span class="c1">// Pick any name that doesn&#39;t match.</span>
        <span class="p">}</span> <span class="k">else</span> <span class="k">throw</span> <span class="n">std</span><span class="o">::</span><span class="n">logic_error</span><span class="p">(</span><span class="s">&quot;bad verify mode: &quot;</span> <span class="o">+</span> <span class="n">verify</span><span class="p">);</span>

        <span class="n">c</span><span class="p">.</span><span class="n">client_connection_options</span><span class="p">(</span><span class="n">client_opts</span><span class="p">);</span>
        <span class="n">s_handler</span><span class="p">.</span><span class="n">listener</span> <span class="o">=</span> <span class="n">c</span><span class="p">.</span><span class="n">listen</span><span class="p">(</span><span class="s">&quot;//:0&quot;</span><span class="p">,</span> <span class="n">listen_handler</span><span class="p">);</span> <span class="c1">// Listen on port 0 for a dynamic port</span>
    <span class="p">}</span>

    <span class="kt">void</span> <span class="n">on_connection_open</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">connection</span> <span class="o">&amp;</span><span class="n">c</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
        <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">subject</span> <span class="o">=</span> <span class="n">c</span><span class="p">.</span><span class="n">transport</span><span class="p">().</span><span class="n">ssl</span><span class="p">().</span><span class="n">remote_subject</span><span class="p">();</span>
        <span class="n">std</span><span class="o">::</span><span class="n">cout</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Outgoing client connection connected via SSL.  Server certificate identity &quot;</span> <span class="o">&lt;&lt;</span>
            <span class="n">find_CN</span><span class="p">(</span><span class="n">subject</span><span class="p">)</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
    <span class="p">}</span>

    <span class="kt">void</span> <span class="n">on_transport_error</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">transport</span> <span class="o">&amp;</span><span class="n">t</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
        <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">err</span> <span class="o">=</span> <span class="n">t</span><span class="p">.</span><span class="n">error</span><span class="p">().</span><span class="n">what</span><span class="p">();</span>
        <span class="k">if</span> <span class="p">(</span><span class="n">verify</span> <span class="o">==</span> <span class="n">verify_fail</span> <span class="o">&amp;&amp;</span> <span class="n">err</span><span class="p">.</span><span class="n">find</span><span class="p">(</span><span class="s">&quot;certificate&quot;</span><span class="p">)</span> <span class="o">!=</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span><span class="o">::</span><span class="n">npos</span><span class="p">)</span> <span class="p">{</span>
            <span class="n">std</span><span class="o">::</span><span class="n">cout</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Expected failure of connection with wrong peer name: &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">err</span>
                      <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
        <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
            <span class="n">std</span><span class="o">::</span><span class="n">cout</span> <span class="o">&lt;&lt;</span> <span class="s">&quot;Unexpected transport error: &quot;</span> <span class="o">&lt;&lt;</span> <span class="n">err</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
        <span class="p">}</span>
    <span class="p">}</span>

    <span class="kt">void</span> <span class="n">on_sendable</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">sender</span> <span class="o">&amp;</span><span class="n">s</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
        <span class="n">proton</span><span class="o">::</span><span class="n">message</span> <span class="n">m</span><span class="p">;</span>
        <span class="n">m</span><span class="p">.</span><span class="n">body</span><span class="p">(</span><span class="s">&quot;Hello World!&quot;</span><span class="p">);</span>
        <span class="n">s</span><span class="p">.</span><span class="n">send</span><span class="p">(</span><span class="n">m</span><span class="p">);</span>
        <span class="n">s</span><span class="p">.</span><span class="n">close</span><span class="p">();</span>
    <span class="p">}</span>

    <span class="kt">void</span> <span class="n">on_tracker_accept</span><span class="p">(</span><span class="n">proton</span><span class="o">::</span><span class="n">tracker</span> <span class="o">&amp;</span><span class="n">t</span><span class="p">)</span> <span class="n">OVERRIDE</span> <span class="p">{</span>
        <span class="c1">// All done.</span>
        <span class="n">t</span><span class="p">.</span><span class="n">connection</span><span class="p">().</span><span class="n">close</span><span class="p">();</span>
    <span class="p">}</span>
<span class="p">};</span>

<span class="kt">int</span> <span class="nf">main</span><span class="p">(</span><span class="kt">int</span> <span class="n">argc</span><span class="p">,</span> <span class="kt">char</span> <span class="o">**</span><span class="n">argv</span><span class="p">)</span> <span class="p">{</span>
    <span class="n">example</span><span class="o">::</span><span class="n">options</span> <span class="n">opts</span><span class="p">(</span><span class="n">argc</span><span class="p">,</span> <span class="n">argv</span><span class="p">);</span>
    <span class="n">opts</span><span class="p">.</span><span class="n">add_value</span><span class="p">(</span><span class="n">cert_directory</span><span class="p">,</span> <span class="sc">&#39;c&#39;</span><span class="p">,</span> <span class="s">&quot;cert_directory&quot;</span><span class="p">,</span>
                   <span class="s">&quot;directory containing SSL certificates and private key information&quot;</span><span class="p">,</span> <span class="s">&quot;CERTDIR&quot;</span><span class="p">);</span>
    <span class="n">opts</span><span class="p">.</span><span class="n">add_value</span><span class="p">(</span><span class="n">verify</span><span class="p">,</span> <span class="sc">&#39;v&#39;</span><span class="p">,</span> <span class="s">&quot;verify&quot;</span><span class="p">,</span> <span class="s">&quot;verify type: </span><span class="se">\&quot;</span><span class="s">minimum</span><span class="se">\&quot;</span><span class="s">, </span><span class="se">\&quot;</span><span class="s">full</span><span class="se">\&quot;</span><span class="s">, </span><span class="se">\&quot;</span><span class="s">fail</span><span class="se">\&quot;</span><span class="s">&quot;</span><span class="p">,</span> <span class="s">&quot;VERIFY&quot;</span><span class="p">);</span>

    <span class="k">try</span> <span class="p">{</span>
        <span class="n">opts</span><span class="p">.</span><span class="n">parse</span><span class="p">();</span>

        <span class="kt">size_t</span> <span class="n">sz</span> <span class="o">=</span> <span class="n">cert_directory</span><span class="p">.</span><span class="n">size</span><span class="p">();</span>
        <span class="k">if</span> <span class="p">(</span><span class="n">sz</span> <span class="o">&amp;&amp;</span> <span class="n">cert_directory</span><span class="p">[</span><span class="n">sz</span> <span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="o">!=</span> <span class="sc">&#39;/&#39;</span><span class="p">)</span>
            <span class="n">cert_directory</span><span class="p">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;/&quot;</span><span class="p">);</span>
        <span class="k">else</span> <span class="n">cert_directory</span> <span class="o">=</span> <span class="s">&quot;ssl_certs/&quot;</span><span class="p">;</span>

        <span class="k">if</span> <span class="p">(</span><span class="n">verify</span> <span class="o">!=</span> <span class="n">verify_noname</span> <span class="o">&amp;&amp;</span> <span class="n">verify</span> <span class="o">!=</span> <span class="n">verify_full</span> <span class="o">&amp;&amp;</span> <span class="n">verify</span> <span class="o">!=</span> <span class="n">verify_fail</span><span class="p">)</span>
            <span class="k">throw</span> <span class="n">std</span><span class="o">::</span><span class="n">runtime_error</span><span class="p">(</span><span class="s">&quot;bad verify argument: &quot;</span> <span class="o">+</span> <span class="n">verify</span><span class="p">);</span>

        <span class="n">hello_world_direct</span> <span class="n">hwd</span><span class="p">;</span>
        <span class="n">proton</span><span class="o">::</span><span class="n">container</span><span class="p">(</span><span class="n">hwd</span><span class="p">).</span><span class="n">run</span><span class="p">();</span>
        <span class="k">return</span> <span class="mi">0</span><span class="p">;</span>
    <span class="p">}</span> <span class="k">catch</span> <span class="p">(</span><span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">exception</span><span class="o">&amp;</span> <span class="n">e</span><span class="p">)</span> <span class="p">{</span>
        <span class="n">std</span><span class="o">::</span><span class="n">cerr</span> <span class="o">&lt;&lt;</span> <span class="n">e</span><span class="p">.</span><span class="n">what</span><span class="p">()</span> <span class="o">&lt;&lt;</span> <span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span>
    <span class="p">}</span>
    <span class="k">return</span> <span class="mi">1</span><span class="p">;</span>
<span class="p">}</span>


<span class="kt">bool</span> <span class="nf">using_OpenSSL</span><span class="p">()</span> <span class="p">{</span>
    <span class="c1">// Current defaults.</span>
<span class="cp">#if defined(WIN32)</span>
    <span class="k">return</span> <span class="nb">false</span><span class="p">;</span>
<span class="cp">#else</span>
    <span class="k">return</span> <span class="nb">true</span><span class="p">;</span>
<span class="cp">#endif</span>
<span class="p">}</span>

<span class="n">ssl_certificate</span> <span class="nf">platform_certificate</span><span class="p">(</span><span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&amp;</span><span class="n">base_name</span><span class="p">,</span> <span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&amp;</span><span class="n">passwd</span><span class="p">)</span> <span class="p">{</span>
    <span class="k">if</span> <span class="p">(</span><span class="n">using_OpenSSL</span><span class="p">())</span> <span class="p">{</span>
        <span class="c1">// The first argument will be the name of the file containing the public certificate, the</span>
        <span class="c1">// second argument will be the name of the file containing the private key.</span>
        <span class="k">return</span> <span class="n">ssl_certificate</span><span class="p">(</span><span class="n">cert_directory</span> <span class="o">+</span> <span class="n">base_name</span> <span class="o">+</span> <span class="s">&quot;-certificate.pem&quot;</span><span class="p">,</span>
                               <span class="n">cert_directory</span> <span class="o">+</span> <span class="n">base_name</span> <span class="o">+</span> <span class="s">&quot;-private-key.pem&quot;</span><span class="p">,</span> <span class="n">passwd</span><span class="p">);</span>
    <span class="p">}</span>
    <span class="k">else</span> <span class="p">{</span>
        <span class="c1">// Windows SChannel</span>
        <span class="c1">// The first argument will be the database or store that contains one or more complete certificates</span>
        <span class="c1">// (public and private data).  The second will be an optional name of the certificate in the store</span>
        <span class="c1">// (not used in this example with one certificate per store).</span>
        <span class="k">return</span> <span class="n">ssl_certificate</span><span class="p">(</span><span class="n">cert_directory</span> <span class="o">+</span> <span class="n">base_name</span> <span class="o">+</span> <span class="s">&quot;-full.p12&quot;</span><span class="p">,</span> <span class="s">&quot;&quot;</span><span class="p">,</span> <span class="n">passwd</span><span class="p">);</span>
    <span class="p">}</span>
<span class="p">}</span>

<span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">platform_CA</span><span class="p">(</span><span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&amp;</span><span class="n">base_name</span><span class="p">)</span> <span class="p">{</span>
    <span class="k">if</span> <span class="p">(</span><span class="n">using_OpenSSL</span><span class="p">())</span> <span class="p">{</span>
        <span class="c1">// In this simple example with self-signed certificates, the peer&#39;s certificate is the CA database.</span>
        <span class="k">return</span> <span class="n">cert_directory</span> <span class="o">+</span> <span class="n">base_name</span> <span class="o">+</span> <span class="s">&quot;-certificate.pem&quot;</span><span class="p">;</span>
    <span class="p">}</span>
    <span class="k">else</span> <span class="p">{</span>
        <span class="c1">// Windows SChannel.  Use a pkcs#12 file with just the peer&#39;s public certificate information.</span>
        <span class="k">return</span> <span class="n">cert_directory</span> <span class="o">+</span> <span class="n">base_name</span> <span class="o">+</span> <span class="s">&quot;-certificate.p12&quot;</span><span class="p">;</span>
    <span class="p">}</span>
<span class="p">}</span>

<span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">find_CN</span><span class="p">(</span><span class="k">const</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="o">&amp;</span><span class="n">subject</span><span class="p">)</span> <span class="p">{</span>
    <span class="c1">// The subject string is returned with different whitespace and component ordering between platforms.</span>
    <span class="c1">// Here we just return the common name by searching for &quot;CN=....&quot; in the subject, knowing that</span>
    <span class="c1">// the test certificates do not contain any escaped characters.</span>
    <span class="kt">size_t</span> <span class="n">pos</span> <span class="o">=</span> <span class="n">subject</span><span class="p">.</span><span class="n">find</span><span class="p">(</span><span class="s">&quot;CN=&quot;</span><span class="p">);</span>
    <span class="k">if</span> <span class="p">(</span><span class="n">pos</span> <span class="o">==</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span><span class="o">::</span><span class="n">npos</span><span class="p">)</span> <span class="k">throw</span> <span class="n">std</span><span class="o">::</span><span class="n">runtime_error</span><span class="p">(</span><span class="s">&quot;No common name in certificate subject&quot;</span><span class="p">);</span>
    <span class="n">std</span><span class="o">::</span><span class="n">string</span> <span class="n">cn</span> <span class="o">=</span> <span class="n">subject</span><span class="p">.</span><span class="n">substr</span><span class="p">(</span><span class="n">pos</span><span class="p">);</span>
    <span class="n">pos</span> <span class="o">=</span> <span class="n">cn</span><span class="p">.</span><span class="n">find</span><span class="p">(</span><span class="sc">&#39;,&#39;</span><span class="p">);</span>
    <span class="k">return</span> <span class="n">pos</span> <span class="o">==</span> <span class="n">std</span><span class="o">::</span><span class="n">string</span><span class="o">::</span><span class="n">npos</span> <span class="o">?</span> <span class="nl">cn</span> <span class="p">:</span> <span class="n">cn</span><span class="p">.</span><span class="n">substr</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">pos</span><span class="p">);</span>
<span class="p">}</span>
</pre></div>

<p><a href="ssl.cpp">Download this file</a></p>