TclTLS
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Changes In Branch status_x509 Through [05b2dd47be] Excluding Merge-Ins

This is equivalent to a diff from 6c02d4d029 to 05b2dd47be

2023-07-16
15:05
Merge status and X509 updates branch check-in: 1924dcd361 user: bohagan tags: trunk
2023-05-24
02:40
Added new option -ciphersuites to set ciphers suites for TLS 1.3. Addresses defect: https://core.tcl-lang.org/tcltls/tktview/d0518a5645 check-in: cd11c125e8 user: bohagan tags: status_x509
01:18
Updated ciphers command to use current APIs and added an option to return only ciphers as would be sent in ClientHello. Updated test suite to use OpenSSL executable to get ciphers comparison data. Added more test cases. Addresses defects: https://core.tcl-lang.org/tcltls/tktview/688788a45c and https://sourceforge.net/p/tls/bugs/36/ check-in: 05b2dd47be user: bohagan tags: status_x509
2023-05-22
19:25
Updated all.tcl test script to produce an exit code. This is needed for use by test automation suites. check-in: af2c6346c9 user: bohagan tags: status_x509
2023-05-19
23:17
Created status_x509 updates branch check-in: 8db793f55f user: bohagan tags: status_x509
2023-05-13
20:25
Merged TEA branch into master check-in: 6c02d4d029 user: bohagan tags: trunk
19:35
Updated README.txt file Closed-Leaf check-in: d34cd241be user: bohagan tags: TEA
2023-04-23
04:49
Starkit fix to add current library names to tls.tcl starkit load function. Source: https://sourceforge.net/p/tls/bugs/55/ and https://sourceforge.net/p/tls/bugs/44/ check-in: c9cb1a525d user: bohagan tags: trunk

Modified doc/tls.html from [a06ffeb7ad] to [d2eae2e68e].
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<title>TLS (SSL) Tcl Commands</title>
</head>

<body bgcolor="#FFFFFF">

<dl>
    <dd><a href="#NAME">NAME</a> <dl>
            <dd><strong>tls</strong> - binding to <strong>OpenSSL</strong>
                toolkit.</dd>
        </dl>
    </dd>
    <dd><a href="#SYNOPSIS">SYNOPSIS</a> </dd>
    <dd><dl>
            <dd><b>package require Tcl </b><em>?8.4?</em></dd>
            <dd><b>package require tls </b><em>?@@VERS@@?</em></dd>
            <dt>&nbsp;</dt>
            <dd><b>tls::init </b><i>?options?</i> </dd>
            <dd><b>tls::socket </b><em>?options? host port</em></dd>
            <dd><b>tls::socket</b><em> ?-server command?
                ?options? port</em></dd>
            <dd><b>tls::handshake</b><em> channel</em></dd>
            <dd><b>tls::status </b><em>?-local? channel</em></dd>

            <dd><b>tls::import</b><em> channel ?options?</em></dd>
            <dd><b>tls::unimport</b><em> channel</em></dd>

            <dd><b>tls::ciphers </b><em>protocol ?verbose?</em></dd>

            <dd><b>tls::version</b></dd>
        </dl>
    </dd>
    <dd><a href="#COMMANDS">COMMANDS</a></dd>
    <dd><a href="#CALLBACK OPTIONS">CALLBACK OPTIONS</a></dd>
    <dd><a href="#HTTPS EXAMPLE">HTTPS EXAMPLE</a></dd>
    <dd><a href="#SEE ALSO">SPECIAL CONSIDERATIONS</a></dd>
    <dd><a href="#SEE ALSO">SEE ALSO</a></dd>
</dl>

<hr>

<h3><a name="NAME">NAME</a></h3>

<p><strong>tls</strong> - binding to <strong>OpenSSL</strong>
toolkit.</p>

<h3><a name="SYNOPSIS">SYNOPSIS</a></h3>

<p><b>package require Tcl 8.4</b><br>
<b>package require tls @@VERS@@</b><br>
<br>
<a href="#tls::init"><b>tls::init </b><i>?options?</i><br>
</a><a href="#tls::socket"><b>tls::socket </b><em>?options? host
port</em><br>
<b>tls::socket</b><em> ?-server command? ?options? port</em><br>
</a><a href="#tls::status"><b>tls::status </b><em>?-local? channel</em><br>

</a><a href="#tls::handshake"><b>tls::handshake</b><em> channel</em></a><br>
<br>
<a href="#tls::import"><b>tls::import </b><i>channel ?options?</i></a><br>
<a href="#tls::unimport"><b>tls::unimport </b><i>channel</i></a><br>

<a href="#tls::ciphers protocol ?verbose?"><strong>tls::ciphers</strong>
<em>protocol ?verbose?</em></a><br>
<a href="#tls::version"><b>tls::version</b></a>
</p>

<h3><a name="DESCRIPTION">DESCRIPTION</a></h3>

<p>This extension provides a generic binding to <a
href="http://www.openssl.org/">OpenSSL</a>, utilizing the








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<title>TLS (SSL) Tcl Commands</title>
</head>

<body bgcolor="#FFFFFF">

<dl>
    <dd><a href="#NAME">NAME</a> <dl>

        <dd><b>tls</b> - binding to <b>OpenSSL</b> toolkit.</dd>
    </dl>
    </dd>
    <dd><a href="#SYNOPSIS">SYNOPSIS</a> </dd>
    <dd><dl>
            <dd><b>package require Tcl</b> <em>?8.4?</em></dd>
            <dd><b>package require tls</b></dd>
            <dt>&nbsp;</dt>
            <dd><b>tls::init</b> <em>?options?</em> </dd>
            <dd><b>tls::socket</b> <em>?options? host port</em></dd>

            <dd><b>tls::socket</b> <em> ?-server command? ?options? port</em></dd>
            <dd><b>tls::handshake</b> <em> channel</em></dd>
            <dd><b>tls::status </b> <em>?-local? channel</em></dd>
            <dd><b>tls::connection </b> <em>channel</em></dd>
            <dd><b>tls::import</b> <em>channel ?options?</em></dd>
            <dd><b>tls::unimport</b> <em>channel</em></dd>
            <dt>&nbsp;</dt>
            <dd><b>tls::ciphers </b> <em>protocol ?verbose? ?supported?</em></dd>
            <dd><b>tls::protocols</b></dd>
            <dd><b>tls::version</b></dd>
        </dl>
    </dd>
    <dd><a href="#COMMANDS">COMMANDS</a></dd>
    <dd><a href="#CALLBACK OPTIONS">CALLBACK OPTIONS</a></dd>
    <dd><a href="#HTTPS EXAMPLE">HTTPS EXAMPLE</a></dd>
    <dd><a href="#SEE ALSO">SPECIAL CONSIDERATIONS</a></dd>
    <dd><a href="#SEE ALSO">SEE ALSO</a></dd>
</dl>

<hr>

<h3><a name="NAME">NAME</a></h3>

<p><strong>tls</strong> - binding to <strong>OpenSSL</strong>
toolkit.</p>

<h3><a name="SYNOPSIS">SYNOPSIS</a></h3>

<p><b>package require Tcl 8.4</b><br>
<b>package require tls</b><br>
<br>
<a href="#tls::init"><b>tls::init</b> <i>?options?</i></a><br>
<a href="#tls::socket"><b>tls::socket</b> <i>?options? host port</i><br>

<a href="#tls::socket"><b>tls::socket</b> <i>?-server command? ?options? port</i></a><br>
<a href="#tls::status"><b>tls::status</b> <i>?-local? channel</i></a><br>
<a href="#tls::connection"><b>tls::connection</b> <i>channel</i></a><br>
<a href="#tls::handshake"><b>tls::handshake</b> <i>channel</i></a><br>

<a href="#tls::import"><b>tls::import</b> <i>channel ?options?</i></a><br>
<a href="#tls::unimport"><b>tls::unimport</b> <i>channel</i></a><br>
<br>
<a href="#tls::ciphers"><b>tls::ciphers</b> <i>protocol ?verbose? ?supported?</i></a><br>
<a href="#tls::protocols"><b>tls::protocols</b></a>
<a href="#tls::version"><b>tls::version</b></a>
</p>

<h3><a name="DESCRIPTION">DESCRIPTION</a></h3>

<p>This extension provides a generic binding to <a
href="http://www.openssl.org/">OpenSSL</a>, utilizing the
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<p>Typically one would use the <strong>tls::socket </strong>command
which provides compatibility with the native Tcl <strong>socket</strong>
command. In such cases <strong>tls::import</strong> should not be
used directly.</p>

<dl>
    <dt><a name="tls::init"><b>tls::init </b><i>?options?</i></a></dt>
    <dd>This routine sets the default options used by <strong>tls::socket</strong>
        and is <em>optional</em>. If you call <strong>tls::import</strong>
        directly this routine has no effect. Any of the options
        that <strong>tls::socket</strong> accepts can be set
        using this command, though you should limit your options
        to only TLS related ones.</dd>
    <dt>&nbsp;</dt>
    <dt><a name="tls::socket"><b>tls::socket </b><em>?options?
        host port</em></a></dt>
    <dt><b>tls::socket</b><em> ?-server command? ?options? port</em></dt>
    <dd>This is a helper function that utilizes the underlying
        commands (<strong>tls::import</strong>). It behaves
        exactly the same as the native Tcl <strong>socket</strong>
        command except that the options can include any of the
        applicable <a href="#tls::import"><strong>tls:import</strong></a>
        options with one additional option:
<blockquote>
    <dl>
        <dt><strong>-autoservername</strong> <em>bool</em></dt>
        <dd>Automatically send the -servername as the <em>host</em> argument
            (<strong>default</strong>: <em>false</em>)</dd>
    </dl>
</blockquote>






























































































    <dt>&nbsp;</dt>
    <dt><a name="tls::handshake"><strong>tls::handshake</strong> <em>channel</em></a></dt>
    <dd>Forces handshake to take place, and returns 0 if
        handshake is still in progress (non-blocking), or 1 if
        the handshake was successful. If the handshake failed
        this routine will throw an error.</dd>
    <dt>&nbsp;</dt>
    <dt><a name="tls::status"><strong>tls::status</strong>
    <em>?-local? channel</em></a></dt>
    <dd>Returns the current security status of an SSL channel. The
        result is a list of key-value pairs describing the
        connected peer. If the result is an empty list then the
        SSL handshake has not yet completed.
        If <em>-local</em> is given, then the certificate information
        is the one used locally.</dd>
</dl>

<blockquote>
    <dl>
        <dt><strong>issuer</strong> <em>dn</em></dt>
        <dd>The distinguished name (DN) of the certificate
            issuer.</dd>
        <dt><strong>subject</strong> <em>dn</em></dt>








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<p>Typically one would use the <strong>tls::socket </strong>command
which provides compatibility with the native Tcl <strong>socket</strong>
command. In such cases <strong>tls::import</strong> should not be
used directly.</p>

<dl>
    <dt><a name="tls::init"><b>tls::init </b><i>?options?</i></a></dt>
    <dd>Optional function to set the default options used by
	<strong>tls::socket</strong>. If you call <strong>tls::import</strong>
        directly this routine has no effect. Any of the options
        that <strong>tls::socket</strong> accepts can be set
        using this command, though you should limit your options
        to only TLS related ones.</dd>
    <dt>&nbsp;</dt>
    <dt><a name="tls::socket"><b>tls::socket </b><em>?options?
        host port</em></a></dt>
    <dt><b>tls::socket</b><em> ?-server command? ?options? port</em></dt>
    <dd>This is a helper function that utilizes the underlying
        commands (<strong>tls::import</strong>). It behaves
        exactly the same as the native Tcl <strong>socket</strong>
        command except that the options can include any of the
        applicable <a href="#tls::import"><strong>tls:import</strong></a>
        options with one additional option:
<blockquote>
    <dl>
        <dt><strong>-autoservername</strong> <em>bool</em></dt>
        <dd>Automatically send the -servername as the <em>host</em> argument
            (default is <em>false</em>)</dd>
    </dl>
</blockquote>

    <dt><a name="tls::import"><b>tls::import </b><i>channel
        ?options?</i></a></dt>
    <dd>SSL-enable a regular Tcl channel - it need not be a
        socket, but must provide bi-directional flow. Also
        setting session parameters for SSL handshake.</dd>

<blockquote>
    <dl>
        <dt><strong>-alpn</strong> <em>list</em></dt>
        <dd>List of protocols to offer during Application-Layer
	    Protocol Negotiation (ALPN). For example: h2, http/1.1, etc.</dd>
        <dt><strong>-cadir</strong> <em>dir</em></dt>
        <dd>Specify the directory containing the CA certificates. The
	    default directory is platform specific and can be set at
	    compile time. This can be overridden via the <b>SSL_CERT_DIR</b>
	    environment variable.</dd>
        <dt><strong>-cafile </strong><em>filename</em></dt>
        <dd>Specify the certificate authority (CA) file to use.</dd>
        <dt><strong>-certfile</strong> <em>filename</em></dt>
        <dd>Specify the filename containing the certificate to use. The
	    default name is <b>cert.pem</b>. This can be overridden via
	    the <b>SSL_CERT_FILE</b> environment variable.</dd>
        <dt><strong>-cert</strong> <em>filename</em></dt>
        <dd>Specify the contents of a certificate to use, as a DER
	    encoded binary value (X.509 DER).</dd>
        <dt><strong>-cipher</strong> <em>string</em></dt>
        <dd>List of ciphers to use. String is a colon (":") separated list
	    of ciphers or cipher suites. Cipher suites can be combined
	    using the <b>+</b> character. Prefixes can be used to permanently
	    remove ("!"), delete ("-"), or move a cypher to the end of
	    the list ("+"). Keywords <b>@STRENGTH</b> (sort by algorithm
	    key length), <b>@SECLEVEL=</b><i>n</i> (set security level to
	    n), and <b>DEFAULT</b> (use default cipher list, at start only)
	    can also be specified. See OpenSSL documentation for the full
	    list of valid values. (TLS 1.2 and earlier only)</dd>
        <dt><strong>-command</strong> <em>callback</em></dt>
        <dd>Callback to invoke at several points during the handshake.
	    This is used to pass errors and tracing information, and
	    it can allow Tcl scripts to perform their own certificate
	    validation in place of the default validation provided by
	    OpenSSL. See <a href="#CALLBACK OPTIONS">CALLBACK OPTIONS</a>
	    for further discussion.</dd>
        <dt><strong>-dhparams </strong><em>filename</em></dt>
        <dd>Specify the Diffie-Hellman parameters file.</dd>
        <dt><strong>-keyfile</strong> <em>filename</em></dt>
        <dd>Specify the private key file. (default is
            value of -certfile)</dd>
        <dt><strong>-key</strong> <em>filename</em></dt>
        <dd>Specify the private key to use as a DER encoded value (PKCS#1 DER)</dd>
        <dt><strong>-model</strong> <em>channel</em></dt>
        <dd>Force this channel to share the same <em><strong>SSL_CTX</strong></em>
            structure as the specified <em>channel</em>, and
            therefore share callbacks etc.</dd>
        <dt><strong>-password</strong> <em>callback</em></dt>
        <dd>Callback to invoke when OpenSSL needs to obtain a password,
	    typically to unlock the private key of a certificate. The
            callback should return a string which represents the password
            to be used. See <a href="#CALLBACK OPTIONS">CALLBACK OPTIONS</a>
	    for further discussion.</dd>
        <dt><strong>-request </strong><em>bool</em></dt>
        <dd>Request a certificate from peer during SSL handshake.
            (default is <em>true</em>)</dd>
        <dt><strong>-require</strong> <em>bool</em></dt>
        <dd>Require a valid certificate from peer during SSL handshake.
	    If this is set to true, then <strong>-request</strong> must
            also be set to true. (default is <em>false</em>)</dd>
        <dt><strong>-server</strong> <em>bool</em></dt>
        <dd>Handshake as server if true, else handshake as
            client. (default is <em>false</em>)</dd>
        <dt><strong>-servername</strong> <em>host</em></dt>
        <dd>Specify server hostname. Only available if the OpenSSL library
	    the package is linked against supports the TLS hostname extension
	    for 'Server Name Indication' (SNI). Use to name the logical host
	    we are talking to and expecting a certificate for.</dd>
        <dt><strong>-ssl2</strong> <em>bool</em></dt>
        <dd>Enable use of SSL v2. (default is <em>false</em>)</dd>
        <dt><strong>-ssl3 </strong><em>bool</em></dt>
        <dd>Enable use of SSL v3. (default is <em>false</em>)</dd>
        <dt>-<strong>tls1</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1. (default is <em>true</em>)</dd>
        <dt>-<strong>tls1.1</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1.1 (default is <em>true</em>)</dd>
        <dt>-<strong>tls1.2</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1.2 (default is <em>true</em>)</dd>
        <dt>-<strong>tls1.3</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1.3 (default is <em>true</em>)</dd>
    </dl>
</blockquote>

    <dt><a name="tls::unimport"><b>tls::unimport </b><i>channel</i></a></dt>
    <dd>Provided for symmetry to <strong>tls::import</strong>, this
      unstacks the SSL-enabling of a regular Tcl channel.  An error
      is thrown if TLS is not the top stacked channel type.</dd>
    <dt>&nbsp;</dt>
    <dt><a name="tls::handshake"><strong>tls::handshake</strong> <em>channel</em></a></dt>
    <dd>Forces handshake to take place, and returns 0 if
        handshake is still in progress (non-blocking), or 1 if
        the handshake was successful. If the handshake failed
        this routine will throw an error.</dd>
    <dt>&nbsp;</dt>
    <dt><a name="tls::status"><strong>tls::status</strong>
    <em>?-local? channel</em></a></dt>
    <dd>Returns the current certificate status of an SSL channel. The
        result is a list of key-value pairs describing the
        connected peer. If the result is an empty list then the
        SSL handshake has not yet completed.
        If <em>-local</em> is given, then the certificate information
        is the one used locally.</dd>


<blockquote>
    <dl>
        <dt><strong>issuer</strong> <em>dn</em></dt>
        <dd>The distinguished name (DN) of the certificate
            issuer.</dd>
        <dt><strong>subject</strong> <em>dn</em></dt>
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        <dt><strong>sha256_hash</strong> <em>hash</em></dt>
        <dd>The SHA256 hash of the certificate.</dd>
        <dt><strong>alpn</strong> <em>protocol</em></dt>
        <dd>The protocol selected after Application-Layer Protocol
	    Negotiation (ALPN).</dd>
        <dt><strong>version</strong> <em>value</em></dt>
        <dd>The protocol version used for the connection:
	  SSLv2, SSLv3, TLSv1, TLSv1.1, TLSv1.2, TLSv1.3, unknown</dd>
    </dl>
</blockquote>

<dl>
    <dt><a name="tls::import"><b>tls::import </b><i>channel
        ?options?</i></a></dt>
    <dd>SSL-enable a regular Tcl channel - it need not be a
        socket, but must provide bi-directional flow. Also
        setting session parameters for SSL handshake.</dd>


</dl>

<blockquote>
    <dl>
        <dt><strong>-alpn</strong> <em>list</em></dt>
        <dd>List of protocols to offer during Application-Layer
	    Protocol Negotiation (ALPN). For example: h2, http/1.1, etc.</dd>
        <dt><strong>-cadir</strong> <em>dir</em></dt>
        <dd>Provide the directory containing the CA certificates. The
	default directory is platform specific and can be set at
	compile time. This can be overridden via the <b>SSL_CERT_DIR</b>
	environment variable.</dd>
        <dt><strong>-cafile </strong><em>filename</em></dt>
        <dd>Provide the CA file.</dd>
        <dt><strong>-certfile</strong> <em>filename</em></dt>
        <dd>Provide the name of a file containing certificate to use.
	The default name is cert.pem. This can be overridden via the
	<b>SSL_CERT_FILE</b> environment variable.</dd>
        <dt><strong>-cert</strong> <em>filename</em></dt>
        <dd>Provide the contents of a certificate to use, as a DER encoded binary value (X.509 DER).</dd>
        <dt><strong>-cipher </strong><em>string</em></dt>
        <dd>Provide the cipher suites to use. Syntax is as per
            OpenSSL.</dd>
        <dt><strong>-command</strong> <em>callback</em></dt>
        <dd>If specified, this callback will be invoked at several points
            during the OpenSSL handshake.  It can pass errors and tracing
            information, and it can allow Tcl scripts to perform
            their own validation of the certificate in place of the
            default validation provided by OpenSSL.
            <br>
            See <a href="#CALLBACK OPTIONS">CALLBACK OPTIONS</a> for
            further discussion.</dd>
        <dt><strong>-dhparams </strong><em>filename</em></dt>
        <dd>Provide a Diffie-Hellman parameters file.</dd>
        <dt><strong>-keyfile</strong> <em>filename</em></dt>
        <dd>Provide the private key file. (<strong>default</strong>:
            value of -certfile)</dd>
        <dt><strong>-key</strong> <em>filename</em></dt>
        <dd>Provide the private key to use as a DER encoded value (PKCS#1 DER)</dd>
        <dt><strong>-model</strong> <em>channel</em></dt>
        <dd>This will force this channel to share the same <em><strong>SSL_CTX</strong></em>
            structure as the specified <em>channel</em>, and
            therefore share callbacks etc.</dd>
        <dt><strong>-password</strong> <em>callback</em></dt>
        <dd>If supplied, this callback will be invoked when OpenSSL needs
            to obtain a password, typically to unlock the private key of
	    a certificate.
            The callback should return a string which represents the
            password to be used.
            <br>
            See <a href="#CALLBACK OPTIONS">CALLBACK OPTIONS</a> for
            further discussion.</dd>
        <dt><strong>-request </strong><em>bool</em></dt>
        <dd>Request a certificate from peer during SSL handshake.
            (<strong>default</strong>: <em>true</em>)</dd>
        <dt><strong>-require</strong> <em>bool</em></dt>
        <dd>Require a valid certificate from peer during SSL
            handshake. If this is set to true then <strong>-request</strong>
            must also be set to true. (<strong>default</strong>: <em>false</em>)</dd>
        <dt><strong>-server</strong> <em>bool</em></dt>
        <dd>Handshake as server if true, else handshake as
            client.(<strong>default</strong>: <em>false</em>)</dd>
        <dt><strong>-servername</strong> <em>host</em></dt>
        <dd>Only available if the OpenSSL library the package is linked
	    against supports the TLS hostname extension for 'Server Name
	    Indication' (SNI). Use to name the logical host we are talking
	    to and expecting a certificate for</dd>
        <dt><strong>-ssl2</strong> <em>bool</em></dt>
        <dd>Enable use of SSL v2. (<strong>default</strong>: <em>false</em>)</dd>
        <dt><strong>-ssl3 </strong><em>bool</em></dt>
        <dd>Enable use of SSL v3. (<strong>default</strong>: <em>false</em>)</dd>

        <dt>-<strong>tls1</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1. (<strong>default</strong>: <em>true</em>)</dd>

        <dt>-<strong>tls1.1</strong> <em>bool</em></dt>

        <dd>Enable use of TLS v1.1 (<strong>default</strong>: <em>true</em>)</dd>
        <dt>-<strong>tls1.2</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1.2 (<strong>default</strong>: <em>true</em>)</dd>
        <dt>-<strong>tls1.3</strong> <em>bool</em></dt>
        <dd>Enable use of TLS v1.3 (<strong>default</strong>: <em>true</em>)</dd>

    </dl>
</blockquote>

<dl>
    <dt><a name="tls::unimport"><b>tls::unimport </b><i>channel</i></a></dt>
    <dd>Provided for symmetry to <strong>tls::import</strong>, this
      unstacks the SSL-enabling of a regular Tcl channel.  An error
      is thrown if TLS is not the top stacked channel type.</dd>
</dl>

<dl>
    <dt><a name="tls::ciphers protocol ?verbose?"><strong>tls::ciphers</strong>
        <em>protocol ?verbose?</em></a></dt>
    <dd>Returns list of supported ciphers based on the <em>protocol</em>
        you supply, which must be one of <em>ssl2, ssl3, or tls1</em>.
        If <em>verbose</em> is specified as true then a verbose,
        semi-human readable list is returned providing additional
        information on the nature of the cipher support. In each
        case the result is a Tcl list.</dd>

</dl>





<dl>
    <dt><a name="tls::version"><strong>tls::version</strong></a></dt>
    <dd>Returns the version string defined by OpenSSL.</dd>
</dl>

<h3><a name="CALLBACK OPTIONS">CALLBACK OPTIONS</a></h3>

<p>
As indicated above, individual channels can be given their own callbacks
to handle intermediate processing by the OpenSSL library, using the








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        <dt><strong>sha256_hash</strong> <em>hash</em></dt>
        <dd>The SHA256 hash of the certificate.</dd>
        <dt><strong>alpn</strong> <em>protocol</em></dt>
        <dd>The protocol selected after Application-Layer Protocol
	    Negotiation (ALPN).</dd>
        <dt><strong>version</strong> <em>value</em></dt>
        <dd>The protocol version used for the connection:
	  SSLv2, SSLv3, TLSv1, TLSv1.1, TLSv1.2, TLSv1.3, or unknown</dd>
    </dl>
</blockquote>


    <dt><a name="tls::connection"><strong>tls::connection</strong>

    <em>channel</em></a></dt>


    <dd>Returns the current connection status of an SSL channel. The
        result is a list of key-value pairs describing the
        connected peer.</dd>

<blockquote>
    <dl>
        <dt><strong>state</strong> <em>state</em></dt>
        <dd>State of the connection: initializing, handshake, established</dd>

        <dt><strong>server</strong> <em>name</em></dt>



        <dd>The name of the connected to server.</dd>
        <dt><strong>protocol</strong> <em>version</em></dt>
        <dd>The protocol version used for the connection:



	    SSL2, SSL3, TLS1, TLS1.1, TLS1.2, TLS1.3, or unknown</dd>
        <dt><strong>cipher</strong> <em>cipher</em></dt>



        <dd>The current cipher in use for the connection.</dd>
        <dt><strong>standard_name</strong> <em>name</em></dt>







        <dd>The standard RFC name of cipher.</dd>
        <dt><strong>bits</strong> <em>n</em></dt>
        <dd>The number of processed bits used for cipher.</dd>









        <dt><strong>secret_bits</strong> <em>n</em></dt>







        <dd>The number of secret bits used for cipher.</dd>



        <dt><strong>min_version</strong> <em>version</em></dt>








        <dd>The minimum protocol version for cipher.</dd>


        <dt><strong>description</strong> <em>string</em></dt>



        <dd>A text description of the cipher.</dd>
        <dt><strong>renegotiation</strong> <em>state</em></dt>

        <dd>Whether protocol renegotiation is allowed or disallowed.</dd>
        <dt><strong>alpn</strong> <em>protocol</em></dt>
        <dd>The protocol selected after Application-Layer Protocol
	    Negotiation (ALPN).</dd>
        <dt><strong>session_reused</strong> <em>boolean</em></dt>



        <dd>Whether the session has been reused or not.</dd>
    </dl>
</blockquote>









    <dt><a name="tls::ciphers"><strong>tls::ciphers</strong> 
    <em>protocol ?verbose? ?supported?</em></a></dt>
    <dd>Returns a list of supported ciphers available for <em>protocol</em>,
        where protocol must be one of <b>ssl2, ssl3, tls1, tls1.1,
	tls1.2,</b> or <b>tls1.3</b>. If <em>verbose</em> is specified as
	true then a verbose, human readable list is returned with
	additional information on the cipher. If <em>supported</em>

	is specified as true, then only the ciphers supported for protocol
	will be listed.</dd>

    <dt><a name="tls::protocols"><strong>tls::protocols</strong></a></dt>
    <dd>Returns a list of supported protocols. Valid values are:
	<b>ssl2</b>, <b>ssl3</b>, <b>tls1</b>, <b>tls1.1</b>, <b>tls1.2</b>,
	and <b>tls1.3</b>.</dd>

    <dt><a name="tls::version"><strong>tls::version</strong></a></dt>
    <dd>Returns the OpenSSL version string.</dd>
</dl>

<h3><a name="CALLBACK OPTIONS">CALLBACK OPTIONS</a></h3>

<p>
As indicated above, individual channels can be given their own callbacks
to handle intermediate processing by the OpenSSL library, using the
︙︙
Modified generic/tls.c from [e3d417c077] to [f33536e873]. 
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/*
 * Copyright (C) 1997-1999 Matt Newman <matt@novadigm.com>
 * some modifications:
 *	Copyright (C) 2000 Ajuba Solutions
 *	Copyright (C) 2002 ActiveState Corporation
 *	Copyright (C) 2004 Starfish Systems

 *
 * TLS (aka SSL) Channel - can be layered on any bi-directional
 * Tcl_Channel (Note: Requires Trf Core Patch)
 *
 * This was built (almost) from scratch based upon observation of
 * OpenSSL 0.9.2B
 *







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/*
 * Copyright (C) 1997-1999 Matt Newman <matt@novadigm.com>
 * some modifications:
 *	Copyright (C) 2000 Ajuba Solutions
 *	Copyright (C) 2002 ActiveState Corporation
 *	Copyright (C) 2004 Starfish Systems
 *	Copyright (C) 2023 Brian O'Hagan
 *
 * TLS (aka SSL) Channel - can be layered on any bi-directional
 * Tcl_Channel (Note: Requires Trf Core Patch)
 *
 * This was built (almost) from scratch based upon observation of
 * OpenSSL 0.9.2B
 *
︙︙
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 *	A standard Tcl result list.
 *
 * Side effects:
 *	constructs and destroys SSL context (CTX)
 *
 *-------------------------------------------------------------------
 */
static int
CiphersObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    static const char *protocols[] = {
	"ssl2",	"ssl3",	"tls1",	"tls1.1", "tls1.2", "tls1.3", NULL
    };
    enum protocol {
	TLS_SSL2, TLS_SSL3, TLS_TLS1, TLS_TLS1_1, TLS_TLS1_2, TLS_TLS1_3, TLS_NONE
    };



    Tcl_Obj *objPtr;
    SSL_CTX *ctx = NULL;
    SSL *ssl = NULL;
    STACK_OF(SSL_CIPHER) *sk;
    char *cp, buf[BUFSIZ];
    int index, verbose = 0;

    dprintf("Called");

    if ((objc < 2) || (objc > 3)) {
	Tcl_WrongNumArgs(interp, 1, objv, "protocol ?verbose?");
	return TCL_ERROR;
    }
    if (Tcl_GetIndexFromObj(interp, objv[1], protocols, "protocol", 0, &index) != TCL_OK) {
	return TCL_ERROR;
    }
    if ((objc > 2) && Tcl_GetBooleanFromObj(interp, objv[2], &verbose) != TCL_OK) {
	return TCL_ERROR;
    }




    switch ((enum protocol)index) {
	case TLS_SSL2:
#if OPENSSL_VERSION_NUMBER >= 0x10101000L || defined(NO_SSL2) || defined(OPENSSL_NO_SSL2)
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
#else
	    ctx = SSL_CTX_new(SSLv2_method()); break;
#endif
	case TLS_SSL3:
#if defined(NO_SSL3) || defined(OPENSSL_NO_SSL3)








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 *	A standard Tcl result list.
 *
 * Side effects:
 *	constructs and destroys SSL context (CTX)
 *
 *-------------------------------------------------------------------
 */


static const char *protocols[] = {
	"ssl2", "ssl3", "tls1", "tls1.1", "tls1.2", "tls1.3", NULL
};
enum protocol {
    TLS_SSL2, TLS_SSL3, TLS_TLS1, TLS_TLS1_1, TLS_TLS1_2, TLS_TLS1_3, TLS_NONE
};

static int
CiphersObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Obj *objPtr = NULL;
    SSL_CTX *ctx = NULL;
    SSL *ssl = NULL;
    STACK_OF(SSL_CIPHER) *sk;
    char *cp, buf[BUFSIZ];
    int index, verbose = 0, use_supported = 0;

    dprintf("Called");

    if ((objc < 2) || (objc > 4)) {
	Tcl_WrongNumArgs(interp, 1, objv, "protocol ?verbose? ?supported?");
	return TCL_ERROR;
    }
    if (Tcl_GetIndexFromObj(interp, objv[1], protocols, "protocol", 0, &index) != TCL_OK) {
	return TCL_ERROR;
    }
    if ((objc > 2) && Tcl_GetBooleanFromObj(interp, objv[2], &verbose) != TCL_OK) {
	return TCL_ERROR;
    }
    if ((objc > 3) && Tcl_GetBooleanFromObj(interp, objv[3], &use_supported) != TCL_OK) {
	return TCL_ERROR;
    }

    switch ((enum protocol)index) {
	case TLS_SSL2:
#if OPENSSL_VERSION_NUMBER >= 0x10100000L || defined(NO_SSL2) || defined(OPENSSL_NO_SSL2)
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
#else
	    ctx = SSL_CTX_new(SSLv2_method()); break;
#endif
	case TLS_SSL3:
#if defined(NO_SSL3) || defined(OPENSSL_NO_SSL3)
︙︙
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	default:
	    break;
    }
    if (ctx == NULL) {
	Tcl_AppendResult(interp, REASON(), NULL);
	return TCL_ERROR;
    }

    ssl = SSL_new(ctx);
    if (ssl == NULL) {
	Tcl_AppendResult(interp, REASON(), NULL);
	SSL_CTX_free(ctx);
	return TCL_ERROR;
    }
    objPtr = Tcl_NewListObj(0, NULL);








    if (!verbose) {

	for (index = 0; ; index++) {


	    cp = (char*)SSL_get_cipher_list(ssl, index);


	    if (cp == NULL) break;
	    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(cp, -1));
	}

    } else {


	sk = SSL_get_ciphers(ssl);


	for (index = 0; index < sk_SSL_CIPHER_num(sk); index++) {
	    register size_t i;

	    SSL_CIPHER_description(sk_SSL_CIPHER_value(sk, index), buf, sizeof(buf));
	    for (i = strlen(buf) - 1; i ; i--) {
		if ((buf[i] == ' ') || (buf[i] == '\n') || (buf[i] == '\r') || (buf[i] == '\t')) {
		    buf[i] = '\0';
		} else {
		    break;

		}
	    }
	    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(buf, -1));



	}
    }
    SSL_free(ssl);
    SSL_CTX_free(ctx);






















































    Tcl_SetObjResult(interp, objPtr);
    return TCL_OK;
	clientData = clientData;
}

/*








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	default:
	    break;
    }
    if (ctx == NULL) {
	Tcl_AppendResult(interp, REASON(), NULL);
	return TCL_ERROR;
    }

    ssl = SSL_new(ctx);
    if (ssl == NULL) {
	Tcl_AppendResult(interp, REASON(), NULL);
	SSL_CTX_free(ctx);
	return TCL_ERROR;
    }

    /* Use list and order as would be sent in a ClientHello or all available ciphers */
    if (use_supported) {
	sk = SSL_get1_supported_ciphers(ssl);
    } else {
	sk = SSL_get_ciphers(ssl);
    }

    if (sk != NULL) {
	if (!verbose) {
	    objPtr = Tcl_NewListObj(0, NULL);
	    for (int i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
		const SSL_CIPHER *c = sk_SSL_CIPHER_value(sk, i);
		if (c == NULL) continue;

		/* cipher name or (NONE) */
		cp = SSL_CIPHER_get_name(c);
		if (cp == NULL) break;
		Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(cp, -1));
	    }

	} else {
	    objPtr = Tcl_NewStringObj("",0);
	    for (int i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
		const SSL_CIPHER *c = sk_SSL_CIPHER_value(sk, i);
		if (c == NULL) continue;



		/* textual description of the cipher */
		if (SSL_CIPHER_description(c, buf, sizeof(buf)) != NULL) {
		    Tcl_AppendToObj(objPtr, buf, strlen(buf));


		} else {

		    Tcl_AppendToObj(objPtr, "UNKNOWN\n", 8);
		}
	    }

	}
	if (use_supported) {
	    sk_SSL_CIPHER_free(sk);
	}
    }
    SSL_free(ssl);
    SSL_CTX_free(ctx);

    Tcl_SetObjResult(interp, objPtr);
    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * ProtocolsObjCmd -- list available protocols
 *
 *	This procedure is invoked to process the "tls::protocols" command
 *	to list available protocols.
 *
 * Results:
 *	A standard Tcl result list.
 *
 * Side effects:
 *	none
 *
 *-------------------------------------------------------------------
 */
static int
ProtocolsObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Obj *objPtr;

    dprintf("Called");

    if (objc != 1) {
	Tcl_WrongNumArgs(interp, 1, objv, "");
	return TCL_ERROR;
    }

    objPtr = Tcl_NewListObj(0, NULL);

#if OPENSSL_VERSION_NUMBER < 0x10100000L && !defined(NO_SSL2) && !defined(OPENSSL_NO_SSL2)
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_SSL2], -1));
#endif
#if !defined(NO_SSL3) && !defined(OPENSSL_NO_SSL3)
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_SSL3], -1));
#endif
#if !defined(NO_TLS1) && !defined(OPENSSL_NO_TLS1)
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1], -1));
#endif
#if !defined(NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_1)
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1_1], -1));
#endif
#if !defined(NO_TLS1_2) && !defined(OPENSSL_NO_TLS1_2)
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1_2], -1));
#endif
#if !defined(NO_TLS1_3) && !defined(OPENSSL_NO_TLS1_3)
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1_3], -1));
#endif

    Tcl_SetObjResult(interp, objPtr);
    return TCL_OK;
	clientData = clientData;
}

/*
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            Tls_Free((char *) statePtr);
            return TCL_ERROR;
        }
    }
    if (alpn) {
	/* Convert a Tcl list into a protocol-list in wire-format */
	unsigned char *protos, *p;
	unsigned int protoslen = 0;
	int i, len, cnt;
	Tcl_Obj **list;
	if (Tcl_ListObjGetElements(interp, alpn, &cnt, &list) != TCL_OK) {
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
	/* Determine the memory required for the protocol-list */
	for (i = 0; i < cnt; i++) {
	    Tcl_GetStringFromObj(list[i], &len);
	    if (len > 255) {
		Tcl_AppendResult(interp, "alpn protocol name too long", (char *) NULL);
		Tls_Free((char *) statePtr);
		return TCL_ERROR;
	    }
	    protoslen += 1 + len;
	}
	/* Build the complete protocol-list */
	protos = ckalloc(protoslen);
	/* protocol-lists consist of 8-bit length-prefixed, byte strings */
	for (i = 0, p = protos; i < cnt; i++) {
	    char *str = Tcl_GetStringFromObj(list[i], &len);
	    *p++ = len;
	    memcpy(p, str, len);
	    p += len;
	}
	/* Note: This functions reverses the return value convention */
	if (SSL_set_alpn_protos(statePtr->ssl, protos, protoslen)) {
	    Tcl_AppendResult(interp, "failed to set alpn protocols", (char *) NULL);
	    Tls_Free((char *) statePtr);
	    ckfree(protos);
	    return TCL_ERROR;
	}
	/* SSL_set_alpn_protos makes a copy of the protocol-list */
	ckfree(protos);








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            Tls_Free((char *) statePtr);
            return TCL_ERROR;
        }
    }
    if (alpn) {
	/* Convert a Tcl list into a protocol-list in wire-format */
	unsigned char *protos, *p;
	unsigned int protos_len = 0;
	int i, len, cnt;
	Tcl_Obj **list;
	if (Tcl_ListObjGetElements(interp, alpn, &cnt, &list) != TCL_OK) {
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
	/* Determine the memory required for the protocol-list */
	for (i = 0; i < cnt; i++) {
	    Tcl_GetStringFromObj(list[i], &len);
	    if (len > 255) {
		Tcl_AppendResult(interp, "alpn protocol name too long", (char *) NULL);
		Tls_Free((char *) statePtr);
		return TCL_ERROR;
	    }
	    protos_len += 1 + len;
	}
	/* Build the complete protocol-list */
	protos = ckalloc(protos_len);
	/* protocol-lists consist of 8-bit length-prefixed, byte strings */
	for (i = 0, p = protos; i < cnt; i++) {
	    char *str = Tcl_GetStringFromObj(list[i], &len);
	    *p++ = len;
	    memcpy(p, str, len);
	    p += len;
	}
	/* Note: This functions reverses the return value convention */
	if (SSL_set_alpn_protos(statePtr->ssl, protos, protos_len)) {
	    Tcl_AppendResult(interp, "failed to set alpn protocols", (char *) NULL);
	    Tls_Free((char *) statePtr);
	    ckfree(protos);
	    return TCL_ERROR;
	}
	/* SSL_set_alpn_protos makes a copy of the protocol-list */
	ckfree(protos);
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    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *






























































































































 * VersionObjCmd -- return version string from OpenSSL.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.








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    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * ConnectionInfoObjCmd -- return connection info from OpenSSL.
 *
 * Results:
 *	A list of connection info
  *
 *-------------------------------------------------------------------
 */

static int ConnectionInfoObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Channel chan;		/* The channel to set a mode on. */
    State *statePtr;		/* client state for ssl socket */
    Tcl_Obj *objPtr;
    const SSL *ssl;
    const SSL_CIPHER *cipher;

#if !defined(OPENSSL_NO_TLSEXT) && OPENSSL_VERSION_NUMBER >= 0x10002000L
    const unsigned char *proto;
    unsigned int len;
#endif
#if defined(HAVE_SSL_COMPRESSION) && OPENSSL_VERSION_NUMBER >= 0x10002000L
    const COMP_METHOD *comp;
#endif

    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channel");
	return(TCL_ERROR);
    }

    chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], NULL), NULL);
    if (chan == (Tcl_Channel) NULL) {
	return(TCL_ERROR);
    }

    /*
     * Make sure to operate on the topmost channel
     */
    chan = Tcl_GetTopChannel(chan);
    if (Tcl_GetChannelType(chan) != Tls_ChannelType()) {
	Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan), "\": not a TLS channel", NULL);
	return(TCL_ERROR);
    }

    objPtr = Tcl_NewListObj(0, NULL);

    /* Get connection state */
    statePtr = (State *)Tcl_GetChannelInstanceData(chan);
    ssl = statePtr->ssl;
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("state", -1));
    if (SSL_is_init_finished(ssl)) {
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("established", -1));
    } else if (SSL_in_init(ssl)) {
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("handshake", -1));
    } else {
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("initializing", -1));
    }

    /* Get server name */
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("server", -1));
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name), -1));

    /* Get protocol */
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("protocol", -1));
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(SSL_get_version(ssl), -1));

    /* Get cipher */
    cipher = SSL_get_current_cipher(ssl);
    if (cipher != NULL) {
	char buf[BUFSIZ] = {0};
	int bits, alg_bits;

	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("cipher", -1));
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(SSL_CIPHER_get_name(cipher), -1));
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("standard_name", -1));
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(SSL_CIPHER_standard_name(cipher), -1));

	bits = SSL_CIPHER_get_bits(cipher, &alg_bits);
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("bits", -1));
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewIntObj(bits));
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("secret_bits", -1));
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewIntObj(alg_bits));
	/* alg_bits is actual key secret bits. If use bits and secret (algorithm) bits differ,
           the rest of the bits are fixed, i.e. for limited export ciphers (bits < 56) */
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("min_version", -1));
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(SSL_CIPHER_get_version(cipher), -1));

	if (SSL_CIPHER_description(cipher, buf, sizeof(buf)) != NULL) {
	    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("description", -1));
	    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(buf, -1));
	}
    }

    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("renegotiation", -1));
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(
	SSL_get_secure_renegotiation_support(ssl) ? "allowed" : "disallowed", -1));

#if !defined(OPENSSL_NO_TLSEXT) && OPENSSL_VERSION_NUMBER >= 0x10002000L
    /* Report the selected protocol as a result of the negotiation */
    SSL_get0_alpn_selected(ssl, &proto, &len);
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("alpn", -1));
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj((char *)proto, (int)len));
#endif

    /* Session info */
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("session_reused", -1));
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewIntObj(SSL_session_reused(ssl)));

#if defined(HAVE_SSL_COMPRESSION) && OPENSSL_VERSION_NUMBER >= 0x10002000L
    /* Compression info */
    comp = SSL_get_current_compression(ssl);
    if (comp != NULL) {
	expansion = SSL_get_current_expansion(ssl);
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("compression", -1));
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(SSL_COMP_get_name(comp), -1));
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("expansion", -1));
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(SSL_COMP_get_name(expansion), -1));
    }
#endif

    Tcl_SetObjResult(interp, objPtr);
    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * VersionObjCmd -- return version string from OpenSSL.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.
︙︙
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    if (TlsLibInit(0) != TCL_OK) {
	Tcl_AppendResult(interp, "could not initialize SSL library", NULL);
	return TCL_ERROR;
    }

    Tcl_CreateObjCommand(interp, "tls::ciphers", CiphersObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);

    Tcl_CreateObjCommand(interp, "tls::handshake", HandshakeObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::import", ImportObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::unimport", UnimportObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::status", StatusObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::version", VersionObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::misc", MiscObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);


    if (interp) {
	Tcl_Eval(interp, tlsTclInitScript);
    }

    return(Tcl_PkgProvide(interp, "tls", PACKAGE_VERSION));
}








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    if (TlsLibInit(0) != TCL_OK) {
	Tcl_AppendResult(interp, "could not initialize SSL library", NULL);
	return TCL_ERROR;
    }

    Tcl_CreateObjCommand(interp, "tls::ciphers", CiphersObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::connection", ConnectionInfoObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::handshake", HandshakeObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::import", ImportObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::unimport", UnimportObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::status", StatusObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::version", VersionObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::misc", MiscObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::protocols", ProtocolsObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);

    if (interp) {
	Tcl_Eval(interp, tlsTclInitScript);
    }

    return(Tcl_PkgProvide(interp, "tls", PACKAGE_VERSION));
}
︙︙
Added tests/README.txt version [673cb36188].
Modified tests/all.tcl from [b44ef18ced] to [b91d386182]. 
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# all.tcl --
#
# This file contains a top-level script to run all of the Tcl
# tests.  Execute it by invoking "source all.test" when running tcltest
# in this directory.
#
# Copyright (c) 1998-2000 by Ajuba Solutions.
# All rights reserved.
#
# RCS: @(#) $Id: all.tcl,v 1.5 2000/08/15 18:45:01 hobbs Exp $


#set auto_path [linsert $auto_path 0 [file normalize [file join [file dirname [info script]] ..]]]
set auto_path [linsert $auto_path 0 [file normalize [pwd]]]

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}






set ::tcltest::testSingleFile false
set ::tcltest::testsDirectory [file dir [info script]]

# We should ensure that the testsDirectory is absolute.
# This was introduced in Tcl 8.3+'s tcltest, so we need a catch.
catch {::tcltest::normalizePath ::tcltest::testsDirectory}

puts stdout "Tests running in interp:  [info nameofexecutable]"

puts stdout "Tests running in working dir:  $::tcltest::testsDirectory"
if {[llength $::tcltest::skip] > 0} {
    puts stdout "Skipping tests that match:  $::tcltest::skip"
}
if {[llength $::tcltest::match] > 0} {
    puts stdout "Only running tests that match:  $::tcltest::match"
}


if {[llength $::tcltest::skipFiles] > 0} {
    puts stdout "Skipping test files that match:  $::tcltest::skipFiles"

}
if {[llength $::tcltest::matchFiles] > 0} {
    puts stdout "Only sourcing test files that match:  $::tcltest::matchFiles"
}

set timeCmd {clock format [clock seconds]}



puts stdout "Tests began at [eval $timeCmd]"


# source each of the specified tests
foreach file [lsort [::tcltest::getMatchingFiles]] {
    set tail [file tail $file]
    puts stdout $tail
    if {[catch {source $file} msg]} {
	puts stdout $msg
    }
}

# cleanup
puts stdout "\nTests ended at [eval $timeCmd]"
::tcltest::cleanupTests 1
return













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# all.tcl --
#
# This file contains a top-level script to run all of the Tcl
# tests.  Execute it by invoking "source all.test" when running tcltest
# in this directory.
#
# Copyright (c) 1998-2000 by Ajuba Solutions.
# All rights reserved.
#
# RCS: @(#) $Id: all.tcl,v 1.5 2000/08/15 18:45:01 hobbs Exp $

set path [file normalize [file dirname [file join [pwd] [info script]]]]
#set auto_path [linsert $auto_path 0 [file normalize [file join [file dirname [info script]] ..]]]
set auto_path [linsert $auto_path 0 [file dirname $path] [file normalize [pwd]]]

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}

# Get common functions
if {[file exists [file join $path common.tcl]]} {
    source [file join $path common.tcl]
}

set ::tcltest::testSingleFile false
set ::tcltest::testsDirectory [file dir [info script]]

# We should ensure that the testsDirectory is absolute.
# This was introduced in Tcl 8.3+'s tcltest, so we need a catch.
catch {::tcltest::normalizePath ::tcltest::testsDirectory}


#
# Run all tests in current and any sub directories with an all.tcl file.






#
set exitCode 0
if {[package vsatisfies [package require tcltest] 2.5-]} {
    if {[::tcltest::runAllTests] == 1} {
	set exitCode 1
    }



} else {

    # Hook to determine if any of the tests failed. Then we can exit with the
    # proper exit code: 0=all passed, 1=one or more failed
    proc tcltest::cleanupTestsHook {} {
	variable numTests
	set exitCode [expr {$numTests(Total) == 0 || $numTests(Failed) > 0}]
    }

    ::tcltest::runAllTests




}

#  Exit code: 0=all passed, 1=one or more failed




exit $exitCode
Added tests/ciphers.csv version [f4aff3652a].
Modified tests/ciphers.test from [9bef3a5541] to [212c1bf055]. 
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# Commands covered:  tls::ciphers
#
# This file contains a collection of tests for one or more of the Tcl
# built-in commands.  Sourcing this file into Tcl runs the tests and
# generates output for errors.  No output means no errors were found.
#

# All rights reserved.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import ::tcltest::*
}


# The build dir is added as the first element of $PATH
package require tls

# One of these should == 1, depending on what type of ssl library
# tls was compiled against. (RSA BSAFE SSL-C or OpenSSL).

#


set ::tcltest::testConstraints(rsabsafe) 0

set ::tcltest::testConstraints(openssl) [string match "OpenSSL*" [tls::version]]





set ::EXPECTEDCIPHERS(rsabsafe) {
    EDH-DSS-RC4-SHA
    EDH-RSA-DES-CBC3-SHA
    EDH-DSS-DES-CBC3-SHA
    DES-CBC3-SHA
    RC4-SHA
    RC4-MD5
    EDH-RSA-DES-CBC-SHA
    EDH-DSS-DES-CBC-SHA
    DES-CBC-SHA

    EXP-EDH-DSS-DES-56-SHA

    EXP-EDH-DSS-RC4-56-SHA
    EXP-DES-56-SHA
    EXP-RC4-56-SHA
    EXP-EDH-RSA-DES-CBC-SHA
    EXP-EDH-DSS-DES-CBC-SHA
    EXP-DES-CBC-SHA
    EXP-RC2-CBC-MD5
    EXP-RC4-MD5
}




set ::EXPECTEDCIPHERS(openssl) {
    AES128-SHA
    AES256-SHA
    DES-CBC-SHA
    DES-CBC3-SHA
    DHE-DSS-AES128-SHA



    DHE-DSS-AES256-SHA
    DHE-DSS-RC4-SHA
    DHE-RSA-AES128-SHA
    DHE-RSA-AES256-SHA
    EDH-DSS-DES-CBC-SHA
    EDH-DSS-DES-CBC3-SHA
    EDH-RSA-DES-CBC-SHA
    EDH-RSA-DES-CBC3-SHA
    EXP-DES-CBC-SHA
    EXP-EDH-DSS-DES-CBC-SHA
    EXP-EDH-RSA-DES-CBC-SHA
    EXP-RC2-CBC-MD5
    EXP-RC4-MD5
    EXP1024-DES-CBC-SHA
    EXP1024-DHE-DSS-DES-CBC-SHA
    EXP1024-DHE-DSS-RC4-SHA

    EXP1024-RC2-CBC-MD5
    EXP1024-RC4-MD5
    EXP1024-RC4-SHA
    IDEA-CBC-SHA
    RC4-MD5
    RC4-SHA
}





set ::EXPECTEDCIPHERS(openssl0.9.8) {
    DHE-RSA-AES256-SHA
    DHE-DSS-AES256-SHA
    AES256-SHA
    EDH-RSA-DES-CBC3-SHA
    EDH-DSS-DES-CBC3-SHA
    DES-CBC3-SHA
    DHE-RSA-AES128-SHA
    DHE-DSS-AES128-SHA
    AES128-SHA
    IDEA-CBC-SHA
    RC4-SHA
    RC4-MD5
    EDH-RSA-DES-CBC-SHA
    EDH-DSS-DES-CBC-SHA
    DES-CBC-SHA
    EXP-EDH-RSA-DES-CBC-SHA
    EXP-EDH-DSS-DES-CBC-SHA
    EXP-DES-CBC-SHA
    EXP-RC2-CBC-MD5
    EXP-RC4-MD5
}




set version ""

if {[string match "OpenSSL*" [tls::version]]} {
   regexp {OpenSSL ([\d\.]+)} [tls::version] -> version

}
if {![info exists ::EXPECTEDCIPHERS(openssl$version)]} {
    set version ""



}





proc listcompare {wants haves} {
    array set want {}
    array set have {}
    foreach item $wants { set want($item) 1 }
    foreach item $haves { set have($item) 1 }
    foreach item [lsort -dictionary [array names have]] {
	if {[info exists want($item)]} {
	    unset want($item) have($item)
	}



    }
    if {[array size want] || [array size have]} {
	return [list MISSING [array names want] UNEXPECTED [array names have]]



    }



}

test ciphers-1.1 {Tls::ciphers for ssl3} {rsabsafe} {
    # This will fail if you compiled against OpenSSL.
    # Change the constraint setting above.
    listcompare $::EXPECTEDCIPHERS(rsabsafe) [tls::ciphers ssl3]
} {}

test ciphers-1.2 {Tls::ciphers for tls1} {rsabsafe} {
    # This will fail if you compiled against OpenSSL.
    # Change the constraint setting above.
    listcompare $::EXPECTEDCIPHERS(rsabsafe) [tls::ciphers tls1]
} {}

test ciphers-1.3 {Tls::ciphers for ssl3} {openssl} {
    # This will fail if you compiled against RSA bsafe or with a
    # different set of defines than the default.
    # Change the constraint setting above.
    listcompare $::EXPECTEDCIPHERS(openssl$version) [tls::ciphers ssl3]

} {}

# This version of the test is correct for OpenSSL only.
# An equivalent test for the RSA BSAFE SSL-C is earlier in this file.

test ciphers-1.4 {Tls::ciphers for tls1} {openssl} {
    # This will fail if you compiled against RSA bsafe or with a
    # different set of defines than the default.
    # Change the constraint setting in all.tcl
    listcompare $::EXPECTEDCIPHERS(openssl$version) [tls::ciphers tls1]
} {}





# cleanup
::tcltest::cleanupTests
return

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# Auto generated test cases for ciphers_and_protocols.csv





# Load Tcl Test package
if {[lsearch [namespace children] ::tcltest] == -1} {
	package require tcltest
	namespace import ::tcltest::*
}

set auto_path [concat [list [file dirname [file dirname [info script]]]] $auto_path]

package require tls


# Make sure path includes location of OpenSSL executable
if {[info exists ::env(OPENSSL)]} {set ::env(path) [string cat [file join $::env(OPENSSL) bin] ";" $::env(path)}

# Constraints
set protocols [list ssl2 ssl3 tls1 tls1.1 tls1.2 tls1.3]
foreach protocol $protocols {::tcltest::testConstraint $protocol 0}
foreach protocol [::tls::protocols] {::tcltest::testConstraint $protocol 1}
::tcltest::testConstraint OpenSSL [string match "OpenSSL*" [::tls::version]]
# Helper functions
proc lcompare {list1 list2} {set m "";set u "";foreach i $list1 {if {$i ni $list2} {lappend m $i}};foreach i $list2 {if {$i ni $list1} {lappend u $i}};return [list "missing" $m "unexpected" $u]}
proc exec_get {delim args} {return [split [exec openssl {*}$args] $delim]}
# Test protocols









test Protocols-1.1 {All} -body {

	lcompare $protocols [::tls::protocols]
    } -result {missing {ssl2 ssl3} unexpected {}}
# Test ciphers









test CiphersAll-2.1 {SSL2} -constraints {ssl2} -body {
	lcompare [exec_get ":" ciphers -ssl2] [::tls::ciphers ssl2]
    } -result {missing {} unexpected {}}







test CiphersAll-2.2 {SSL3} -constraints {ssl3} -body {
	lcompare [exec_get ":" ciphers -ssl3] [::tls::ciphers ssl3]
    } -result {missing {} unexpected {}}

test CiphersAll-2.3 {TLS1} -constraints {tls1} -body {
	lcompare [exec_get ":" ciphers -tls1] [::tls::ciphers tls1]
    } -result {missing {} unexpected {}}

test CiphersAll-2.4 {TLS1.1} -constraints {tls1.1} -body {
	lcompare [exec_get ":" ciphers -tls1_1] [::tls::ciphers tls1.1]
    } -result {missing {} unexpected {}}

test CiphersAll-2.5 {TLS1.2} -constraints {tls1.2} -body {
	lcompare [exec_get ":" ciphers -tls1_2] [::tls::ciphers tls1.2]
    } -result {missing {} unexpected {}}

test CiphersAll-2.6 {TLS1.3} -constraints {tls1.3} -body {
	lcompare [exec_get ":" ciphers -tls1_3] [::tls::ciphers tls1.3]
    } -result {missing {} unexpected {}}
# Test cipher descriptions







test CiphersDesc-3.1 {SSL2} -constraints {ssl2} -body {
	lcompare [exec_get "\r\n" ciphers -ssl2 -v] [split [string trim [::tls::ciphers ssl2 1]] \n]
    } -result {missing {} unexpected {}}

test CiphersDesc-3.2 {SSL3} -constraints {ssl3} -body {
	lcompare [exec_get "\r\n" ciphers -ssl3 -v] [split [string trim [::tls::ciphers ssl3 1]] \n]
    } -result {missing {} unexpected {}}




















test CiphersDesc-3.3 {TLS1} -constraints {tls1} -body {
	lcompare [exec_get "\r\n" ciphers -tls1 -v] [split [string trim [::tls::ciphers tls1 1]] \n]
    } -result {missing {} unexpected {}}


test CiphersDesc-3.4 {TLS1.1} -constraints {tls1.1} -body {
	lcompare [exec_get "\r\n" ciphers -tls1_1 -v] [split [string trim [::tls::ciphers tls1.1 1]] \n]

    } -result {missing {} unexpected {}}



test CiphersDesc-3.5 {TLS1.2} -constraints {tls1.2} -body {
	lcompare [exec_get "\r\n" ciphers -tls1_2 -v] [split [string trim [::tls::ciphers tls1.2 1]] \n]
    } -result {missing {} unexpected {}}

test CiphersDesc-3.6 {TLS1.3} -constraints {tls1.3} -body {
	lcompare [exec_get "\r\n" ciphers -tls1_3 -v] [split [string trim [::tls::ciphers tls1.3 1]] \n]
    } -result {missing {} unexpected {}}
# Test protocol specific ciphers










test CiphersSpecific-4.1 {SSL2} -constraints {ssl2} -body {
	lcompare [exec_get ":" ciphers -ssl2 -s] [::tls::ciphers ssl2 0 1]
    } -result {missing {} unexpected {}}



test CiphersSpecific-4.2 {SSL3} -constraints {ssl3} -body {
	lcompare [exec_get ":" ciphers -ssl3 -s] [::tls::ciphers ssl3 0 1]
    } -result {missing {} unexpected {}}

test CiphersSpecific-4.3 {TLS1} -constraints {tls1} -body {
	lcompare [exec_get ":" ciphers -tls1 -s] [::tls::ciphers tls1 0 1]
    } -result {missing {} unexpected {}}

test CiphersSpecific-4.4 {TLS1.1} -constraints {tls1.1} -body {



	lcompare [exec_get ":" ciphers -tls1_1 -s] [::tls::ciphers tls1.1 0 1]
    } -result {missing {} unexpected {}}



test CiphersSpecific-4.5 {TLS1.2} -constraints {tls1.2} -body {
	lcompare [exec_get ":" ciphers -tls1_2 -s] [::tls::ciphers tls1.2 0 1]
    } -result {missing {} unexpected {}}




test CiphersSpecific-4.6 {TLS1.3} -constraints {tls1.3} -body {
	lcompare [exec_get ":" ciphers -tls1_3 -s] [::tls::ciphers tls1.3 0 1]
    } -result {missing {} unexpected {}}
# Test version




test Version-5.1 {All} -body {



	::tls::version
    } -match {glob} -result {*}

test Version-5.2 {OpenSSL} -constraints {OpenSSL} -body {
	::tls::version
    } -match {glob} -result {OpenSSL*}

# Cleanup
::tcltest::cleanupTests
return
Added tests/make_test_files.tcl version [c31b96320d].
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