Changes In Branch errors_and_callbacks Through [e85a439068] Excluding Merge-Ins
This is equivalent to a diff from 1924dcd361 to e85a439068
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2023-07-30
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| 03:21 | Merged errors_and_callbacks branch into master check-in: dbe759a0f2 user: bohagan tags: trunk | |
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2023-07-28
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| 17:01 | Disabled skip channel IO during verify callback processing. Call Tcl_Error for connect/handshake errors. check-in: 6866efe8ea user: bohagan tags: errors_and_callbacks | |
| 16:07 | Refactored Tls_Error handler to not set errorCode. Use error message, return result, or if none, fall-back to OpenSSL error queue. Added clear OpenSSL errors to start of each command function to remove old error messages. check-in: e85a439068 user: bohagan tags: errors_and_callbacks | |
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2023-07-24
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| 23:12 | Comment and documentation updates. Added more checks for supported protocol versions. check-in: a4c50c7c74 user: bohagan tags: errors_and_callbacks | |
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2023-07-16
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| 15:21 | Created error handler and callback updates branch check-in: 0d1d711916 user: bohagan tags: errors_and_callbacks | |
| 15:05 | Merge status and X509 updates branch check-in: 1924dcd361 user: bohagan tags: trunk | |
| 03:33 | X509 status optimizations to reduce number of buffers and reordered parameters to match certificate order. check-in: 335b04b2fe user: bohagan tags: status_x509 | |
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2023-05-13
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| 20:25 | Merged TEA branch into master check-in: 6c02d4d029 user: bohagan tags: trunk | |
Modified doc/tls.html from [a1837c5221] to [4574ab0243].
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</head>
<body bgcolor="#FFFFFF">
<dl>
<dd><a href="#NAME">NAME</a>
<dl>
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</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> </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> </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>
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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>
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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> </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>Set the CA certificates path. 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>Set the certificate authority (CA) certificates file. The default
is the cert.pem file in the OpsnSSL directory. This can also be
overridden via the <b>SSL_CERT_FILE</b> environment variable.</dd>
<dt><strong>-certfile</strong> <em>filename</em></dt>
<dd>Specify the filename with the certificate to use.</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>-ciphersuites</strong> <em>string</em></dt>
<dd>List of cipher suites to use. String is a colon (":")
separated list of cipher suite names. (TLS 1.3 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>-post_handshake</strong> <em>bool</em></dt>
<dd>Allow post-handshake ticket updates.</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>-securitylevel</strong> <em>integer</em></dt>
<dd>Set security level. Must be 0 to 5. The security level affects
cipher suite encryption algorithms, supported ECC curves,
supported signature algorithms, DH parameter sizes, certificate
key sizes and signature algorithms. The default is 1.
Level 3 and higher disable support for session tickets and only
accept cipher suites that provide forward secrecy.</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>-session_id</strong> <em>string</em></dt>
<dd>Session id to resume session.</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>
<dt><strong>-validatecommand</strong> <em>callback</em></dt>
<dd>Callback to invoke to verify or validate protocol config
parameters during the protocol negotiation phase. See
<a href="#CALLBACK OPTIONS">CALLBACK OPTIONS</a>
for further discussion.</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> </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> </dt>
<dt><a name="tls::status"><strong>tls::status</strong>
<em>?-local? channel</em></a></dt>
<dd>Returns the current status of the certificate for an SSL
channel. The result is a list of key-value pairs describing
the certificate. If the result is an empty list then the
SSL handshake has not yet completed. If <em>-local</em> is
specified, then the local certificate is used.</dd>
<blockquote>
<b>SSL Status</b>
<dl>
<dt><strong>alpn</strong> <em>protocol</em></dt>
<dd>The protocol selected after Application-Layer Protocol
Negotiation (ALPN).</dd>
<dt><strong>cipher</strong> <em>cipher</em></dt>
<dd>The current cipher in use between the client and
server channels.</dd>
<dt><strong>peername</strong> <em>name</em></dt>
<dd>The peername from the certificate.</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>sbits</strong> <em>n</em></dt>
<dd>The number of bits used for the session key.</dd>
<dt><strong>signatureHashAlgorithm</strong> <em>algorithm</em></dt>
<dd>The signature hash algorithm.</dd>
<dt><strong>signature_type</strong> <em>type</em></dt>
<dd>The signature type value.</dd>
<dt><strong>verification</strong> <em>result</em></dt>
<dd>Certificate verification result.</dd>
<dt><strong>ca_names</strong> <em>list</em></dt>
<dd>List of the Certificate Authorities used to create the certificate.</dd>
</dl>
</blockquote>
<blockquote>
<b>Certificate Status</b>
<dl>
<dt><strong>all</strong> <em>string</em></dt>
<dd>Dump of all certificate info.</dd>
<dt><strong>version</strong> <em>value</em></dt>
<dd>The certificate version.</dd>
<dt><strong>serialNumber</strong> <em>n</em></dt>
<dd>The serial number of the certificate as hex string.</dd>
<dt><strong>signature</strong> <em>algorithm</em></dt>
<dd>Cipher algorithm used for certificate signature.</dd>
<dt><strong>issuer</strong> <em>dn</em></dt>
<dd>The distinguished name (DN) of the certificate issuer.</dd>
<dt><strong>notBefore</strong> <em>date</em></dt>
<dd>The begin date for the validity of the certificate.</dd>
<dt><strong>notAfter</strong> <em>date</em></dt>
<dd>The expiration date for the certificate.</dd>
<dt><strong>subject</strong> <em>dn</em></dt>
<dd>The distinguished name (DN) of the certificate subject.
Fields include: Common Name (CN), Organization (O), Locality
or City (L), State or Province (S), and Country Name (C).</dd>
<dt><strong>issuerUniqueID</strong> <em>string</em></dt>
<dd>The issuer unique id.</dd>
<dt><strong>subjectUniqueID</strong> <em>string</em></dt>
<dd>The subject unique id.</dd>
<dt><strong>num_extensions</strong> <em>n</em></dt>
<dd>Number of certificate extensions.</dd>
<dt><strong>extensions</strong> <em>list</em></dt>
<dd>List of certificate extension names.</dd>
<dt><strong>authorityKeyIdentifier</strong> <em>string</em></dt>
<dd>(AKI) Key identifier of the Issuing CA certificate that signed
the SSL certificate as hex string. This value matches the SKI
value of the Intermediate CA certificate.</dd>
<dt><strong>subjectKeyIdentifier</strong> <em>string</em></dt>
<dd>(SKI) Hash of the public key inside the certificate as hex
string. Used to identify certificates that contain a particular
public key.</dd>
<dt><strong>subjectAltName</strong> <em>list</em></dt>
<dd>List of all of the alternative domain names, sub domains,
and IP addresses that are secured by the certificate.</dd>
<dt><strong>ocsp</strong> <em>list</em></dt>
<dd>List of all Online Certificate Status Protocol (OCSP) URLs.</dd>
<dt><strong>certificate</strong> <em>cert</em></dt>
<dd>The PEM encoded certificate.</dd>
<dt><strong>signatureAlgorithm</strong> <em>algorithm</em></dt>
<dd>Cipher algorithm used for certificate signature.</dd>
<dt><strong>signatureValue</strong> <em>string</em></dt>
<dd>Certificate signature as hex string.</dd>
<dt><strong>signatureDigest</strong> <em>version</em></dt>
<dd>Certificate signing digest.</dd>
<dt><strong>publicKeyAlgorithm</strong> <em>algorithm</em></dt>
<dd>Certificate signature public key algorithm.</dd>
<dt><strong>publicKey</strong> <em>string</em></dt>
<dd>Certificate signature public key as hex string.</dd>
<dt><strong>bits</strong> <em>n</em></dt>
<dd>Number of bits used for certificate signature key</dd>
<dt><strong>self_signed</strong> <em>boolean</em></dt>
<dd>Is certificate signature self signed.</dd>
<dt><strong>sha1_hash</strong> <em>hash</em></dt>
<dd>The SHA1 hash of the certificate as hex string.</dd>
<dt><strong>sha256_hash</strong> <em>hash</em></dt>
<dd>The SHA256 hash of the certificate as hex string.</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>
<b>SSL Status</b>
<dl>
<dt><strong>state</strong> <em>state</em></dt>
<dd>State of the connection.</dd>
<dt><strong>servername</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>renegotiation</strong> <em>boolean</em></dt>
<dd>Whether protocol renegotiation is supported or not.</dd>
<dt><strong>securitylevel</strong> <em>level</em></dt>
<dd>The security level used for selection of ciphers, key size, etc.</dd>
<dt><strong>session_reused</strong> <em>boolean</em></dt>
<dd>Whether the session has been reused or not.</dd>
<dt><strong>is_server</strong> <em>boolean</em></dt>
<dd>Whether the connection is configured as a server (1) or client (0).</dd>
<dt><strong>compression</strong> <em>mode</em></dt>
<dd>Compression method.</dd>
<dt><strong>expansion</strong> <em>mode</em></dt>
<dd>Expansion method.</dd>
</dl>
</blockquote>
<blockquote>
<b>Cipher Info</b>
<dl>
<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>id</strong> <em>id</em></dt>
<dd>The OpenSSL cipher id.</dd>
<dt><strong>description</strong> <em>string</em></dt>
<dd>A text description of the cipher.</dd>
</dl>
</blockquote>
<blockquote>
<b>Session Info</b>
<dl>
<dt><strong>alpn</strong> <em>protocol</em></dt>
<dd>The protocol selected after Application-Layer Protocol
Negotiation (ALPN).</dd>
<dt><strong>resumable</strong> <em>boolean</em></dt>
<dd>Can the session be resumed or not.</dd>
<dt><strong>start_time</strong> <em>seconds</em></dt>
<dd>Time since session started in seconds since epoch.</dd>
<dt><strong>timeout</strong> <em>seconds</em></dt>
<dd>Max duration of session in seconds before time-out.</dd>
<dt><strong>lifetime</strong> <em>seconds</em></dt>
<dd>Session ticket lifetime hint in seconds.</dd>
<dt><strong>session_id</strong> <em>binary_string</em></dt>
<dd>Unique session id for use in resuming the session.</dd>
<dt><strong>session_ticket</strong> <em>binary_string</em></dt>
<dd>Unique session ticket for use in resuming the session.</dd>
<dt><strong>ticket_app_data</strong> <em>binary_string</em></dt>
<dd>Unique session ticket application data.</dd>
<dt><strong>master_key</strong> <em>binary_string</em></dt>
<dd>Unique session master key.</dd>
<dt><strong>session_cache_mode</strong> <em>mode</em></dt>
<dd>Server cache mode (client, server, or both).</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>
|
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424 425 426 427 428 429 430 | </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 | > | < | < < < < < < < < < < < < < < | < < < < < < < < < < < < | | | | | | < | < | | < > > > < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < < | < > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | > > | | | | | | | | | | | | | > > | | | | < < < < < < < | | 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 |
</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
<strong>-command</strong>, <strong>-password</strong>, and
<strong>-validate_command</strong> options passed to either of
<strong>tls::socket</strong> or <strong>tls::import</strong>.
</p>
<blockquote>
<dl>
<dt><strong>-command</strong> <em>callback</em></dt>
<dd>
Invokes the specified <em>callback</em> script at
several points during the OpenSSL handshake.
Values returned from the callback are ignored.
Arguments appended to the script upon callback take one of the
following forms:
<br>
<br>
<dl>
<dt>
<strong>error</strong> <em>channel message</em>
</dt>
<dd>
The <em>message</em> argument contains an error message generated
by the OpenSSL function <code>ERR_reason_error_string()</code>.
</dd>
<br>
<dt>
<strong>info</strong> <em>channel major minor message type</em>
</dt>
<dd>
This form of callback is invoked by the OpenSSL function
<code>SSL_CTX_set_info_callback()</code>.
<br>
The <em>major</em> and <em>minor</em> arguments are used to
represent the state information bitmask.
<ul>
<li>Possible values for <em>major</em> are:
<code>handshake, alert, connect, accept</code>.</li>
<li>Possible values for <em>minor</em> are:
<code>start, done, read, write, loop, exit</code>.</li>
<li>The <em>message</em> argument is a descriptive string which may
be generated either by <code>SSL_state_string_long()</code> or by
<code>SSL_alert_desc_string_long()</code>, depending on context.</li>
<li>For alerts, the possible values for <em>type</em> are:
<code>warning, fatal, and unknown</code>.</li>
</ul>
</dd>
<dt>
<strong>session</strong> <em>session_id ticket lifetime</em>
</dt>
<dd>
This form of callback is invoked by the OpenSSL function
<code>SSL_CTX_sess_set_new_cb()</code>.
Where <em>session_id</em> is the current session identifier,
<em>ticket</em> is the session ticket info, and <em>lifetime</em>
is the the ticket lifetime in seconds.
</dd>
<br>
</dl>
</dd>
<br>
<dt><strong>-password</strong> <em>callback</em></dt>
<dd>
Invokes the specified <em>callback</em> script when OpenSSL needs to
obtain a password. The callback should return the password as a string.
No arguments are appended to the script upon callback.
</dd>
<br>
<dt><strong>-validatecommand</strong> <em>callback</em></dt>
<dd>
Invokes the specified <em>callback</em> script during handshake in
order to validate the provided value(s).
To reject the value and abort connection, the callback should return 0.
To accept the value, it should return 1. To reject the value, but
continue the connection, it should return 2.
<br>
<br>
<dl>
<dt>
<strong>alpn</strong> <em>protocol</em>
</dt>
<dd>
For servers, this form of callback is invoked when the client ALPN
extension is received and the first <b>-alpn</b> specified protocol common
to the both the client and server is selected. If none, the first
client specified protocol is used.
</dd>
<br>
<dt>
<strong>hello</strong> <em>servername</em>
</dt>
<dd>
For servers, this form of callback is invoked during client hello
message processing. It is used to select an appropriate certificate to
present, and make other configuration adjustments relevant to that
server name and its configuration. Called before SNI and ALPN callbacks.
</dd>
<br>
<dt>
<strong>sni</strong> <em>servername</em>
</dt>
<dd>
For servers, this form of callback is invoked when the SNI extension
from the client is received. This is used when a server supports multiple
names, so the right certificate can be used. Called after hello
callback but before ALPN callback.
</dd>
<br>
<dt>
<strong>verify</strong> <em>channel depth cert status error</em>
</dt>
<dd>
This form of callback is invoked by OpenSSL when a new certificate
is received from the peer. It allows the client to check the
certificate chain verification results and choose whether to continue or not.
<ul>
<li>The <em>depth</em> argument is an integer representing the
current depth on the certificate chain, with
<code>0</code> as the peer certificate and higher values going
up to the Certificate Authority (CA).</li>
<li>The <em>cert</em> argument is a list of key-value pairs similar
to those returned by
<a href="#tls::status"><strong>tls::status</strong></a>.</li>
<li>The <em>status</em> argument is an boolean representing the
validity of the current certificate.
A value of <code>0</code> means the certificate is deemed invalid.
A value of <code>1</code> means the certificate is deemed valid.</li>
<li>The <em>error</em> argument supplies the message, if any, generated
by <code>X509_STORE_CTX_get_error()</code>.</li>
</ul>
</dd>
<br>
</dl>
</dd>
</dl>
</blockquote>
<p>
Reference implementations of these callbacks are provided in the
distribution as <strong>tls::callback</strong>, <strong>tls::password</strong>,
and <strong>tls::validate_command</strong> respectively. Note that these are
<em>sample</em> implementations only. In a more realistic deployment
you would specify your own callback scripts on each TLS channel using the
<strong>-command</strong>, <strong>-password</strong>, and <strong>-validate_command</strong> options.
</p>
<p>
The default behavior when the <strong>-command</strong> and <strong>-validate_command</strong>
options are not specified is for TLS to process the associated library callbacks
internally. The default behavior when the <strong>-password</strong> option is not
specified is for TLS to process the associated library callbacks by attempting
to call <strong>tls::password</strong>.
The difference between these two behaviors is a consequence of maintaining
compatibility with earlier implementations.
</p>
<p>
The <strong>tls::debug</strong> variable provides some additional
control over these reference callbacks. Its value is zero by default.
Higher values produce more diagnostic output, and will also force the
verify method in <strong>tls::callback</strong> to accept the
certificate, even when it is invalid.
</p>
<p>
<em>
The use of the reference callbacks <strong>tls::callback</strong>,
<strong>tls::password</strong>, and <strong>tls::validate_command</strong>
is not recommended. They may be removed from future releases.
</em>
</p>
<p>
<em>
The use of the variable <strong>tls::debug</strong> is not recommended.
It may be removed from future releases.
</em>
</p>
<h3><a name="DEBUG">DEBUG</a></h3>
TLS key logging can be enabled by setting the environment variable
<b>SSLKEYLOGFILE</b> to the name of the file to log to. Then whenever TLS
key material is generated or received it will be logged to the file. This
is useful for logging key data for network logging tools to use to
decrypt the data.
<h3><a name="HTTPS EXAMPLE">HTTPS EXAMPLE</a></h3>
<p>This example uses a sample server.pem provided with the TLS release,
courtesy of the <strong>OpenSSL</strong> project.</p>
<pre><code>
package require http
package require tls
http::register https 443 [list ::tls::socket -autoservername true -require true -cadir /etc/ssl/certs]
set tok [http::geturl https://www.tcl.tk/]
</code></pre>
<h3><a name="SPECIAL CONSIDERATIONS">SPECIAL CONSIDERATIONS</a></h3>
<p>The capabilities of this package can vary enormously based upon how your
OpenSSL library was configured and built. New versions may obsolete older
protocol versions, add or remove ciphers, change default values, etc. Use the
<strong>tls::ciphers</strong> and <strong>tls::protocols</strong> commands to
obtain the supported versions.</p>
<h3><a name="SEE ALSO">SEE ALSO</a></h3>
<p><strong>socket</strong>, <strong>fileevent, </strong><a
href="http://www.openssl.org/"><strong>OpenSSL</strong></a></p>
<hr>
|
| ︙ | ︙ |
Modified generic/tls.c from [55d19f65b6] to [477116b5a6].
| ︙ | ︙ | |||
91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 |
static Tcl_Mutex *locks = NULL;
static int locksCount = 0;
static Tcl_Mutex init_mx;
#endif /* OPENSSL_THREADS */
#endif /* TCL_THREADS */
/********************/
/* Callbacks */
/********************/
/*
*-------------------------------------------------------------------
*
* InfoCallback --
*
* monitors SSL connection process
*
* Results:
* None
*
* Side effects:
* Calls callback (if defined)
*-------------------------------------------------------------------
*/
static void
InfoCallback(const SSL *ssl, int where, int ret) {
State *statePtr = (State*)SSL_get_app_data((SSL *)ssl);
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
char *major; char *minor;
dprintf("Called");
if (statePtr->callback == (Tcl_Obj*)NULL)
return;
| > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > < < < < < < < < < < < > > | < < | < | > > < < > | < < < | > | > | > > > > > > > > > > | > | > | < < < | > | < < < > < < < < < < | < < < < < < < < < < < < < < < < < < < < < | | < > | | > < < < < < < < | < < < < < < < < < | > < > | > < < > > < < < < < | > > | > | > > | | | > > | 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 |
static Tcl_Mutex *locks = NULL;
static int locksCount = 0;
static Tcl_Mutex init_mx;
#endif /* OPENSSL_THREADS */
#endif /* TCL_THREADS */
/********************/
/* Callbacks */
/********************/
/*
*-------------------------------------------------------------------
*
* Eval Callback Command --
*
* Eval callback command and catch any errors
*
* Results:
* 0 = Command returned fail or eval returned TCL_ERROR
* 1 = Command returned success or eval returned TCL_OK
*
* Side effects:
* Evaluates callback command
*
*-------------------------------------------------------------------
*/
static int
EvalCallback(Tcl_Interp *interp, State *statePtr, Tcl_Obj *cmdPtr) {
int code, ok;
Tcl_Preserve((ClientData) interp);
Tcl_Preserve((ClientData) statePtr);
/* Eval callback with success for ok or return value 1, fail for error or return value 0 */
code = Tcl_EvalObjEx(interp, cmdPtr, TCL_EVAL_GLOBAL);
if (code == TCL_OK) {
/* Check result for return value */
Tcl_Obj *result = Tcl_GetObjResult(interp);
if (result == NULL || Tcl_GetIntFromObj(interp, result, &ok) != TCL_OK) {
ok = 1;
}
} else {
/* Error - reject the certificate */
ok = 0;
#if (TCL_MAJOR_VERSION == 8) && (TCL_MINOR_VERSION < 6)
Tcl_BackgroundError(interp);
#else
Tcl_BackgroundException(interp, code);
#endif
}
Tcl_Release((ClientData) statePtr);
Tcl_Release((ClientData) interp);
return ok;
}
/*
*-------------------------------------------------------------------
*
* InfoCallback --
*
* monitors SSL connection process
*
* Results:
* None
*
* Side effects:
* Calls callback (if defined)
*
*-------------------------------------------------------------------
*/
static void
InfoCallback(const SSL *ssl, int where, int ret) {
State *statePtr = (State*)SSL_get_app_data((SSL *)ssl);
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
char *major; char *minor;
dprintf("Called");
if (statePtr->callback == (Tcl_Obj*)NULL)
return;
if (where & SSL_CB_HANDSHAKE_START) {
major = "handshake";
minor = "start";
} else if (where & SSL_CB_HANDSHAKE_DONE) {
major = "handshake";
minor = "done";
} else {
if (where & SSL_CB_ALERT) major = "alert";
else if (where & SSL_ST_CONNECT) major = "connect";
else if (where & SSL_ST_ACCEPT) major = "accept";
else major = "unknown";
if (where & SSL_CB_READ) minor = "read";
else if (where & SSL_CB_WRITE) minor = "write";
else if (where & SSL_CB_LOOP) minor = "loop";
else if (where & SSL_CB_EXIT) minor = "exit";
else minor = "unknown";
}
/* Create command to eval */
cmdPtr = Tcl_DuplicateObj(statePtr->callback);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("info", -1));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(major, -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(minor, -1));
if (where & SSL_CB_ALERT) {
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(SSL_alert_desc_string_long(ret), -1));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(SSL_alert_type_string_long(ret), -1));
} else {
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(SSL_state_string_long(ssl), -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("info", -1));
}
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
EvalCallback(interp, statePtr, cmdPtr);
Tcl_DecrRefCount(cmdPtr);
}
/*
*-------------------------------------------------------------------
*
* VerifyCallback --
*
* Monitors SSL certificate validation process. Used to control the
* behavior when the SSL_VERIFY_PEER flag is set. This is called
* whenever a certificate is inspected or decided invalid.
*
* Checks:
* certificate chain is checked starting with the deepest nesting level
* (the root CA certificate) and worked upward to the peer's certificate.
* All signatures are valid, current time is within first and last validity time.
* Check that the certificate is issued by the issuer certificate issuer.
* Check the revocation status for each certificate.
* Check the validity of the given CRL and the cert revocation status.
* Check the policies of all the certificates
*
* Args
* preverify_ok indicates whether the certificate verification passed (1) or not (0)
*
* Results:
* A callback bound to the socket may return one of:
* 0 - the certificate is deemed invalid, send verification
* failure alert to peer, and terminate handshake.
* 1 - the certificate is deemed valid, continue with handshake.
* empty string - no change to certificate validation
*
* Side effects:
* The err field of the currently operative State is set
* to a string describing the SSL negotiation failure reason
*
*-------------------------------------------------------------------
*/
static int
VerifyCallback(int ok, X509_STORE_CTX *ctx) {
Tcl_Obj *cmdPtr;
SSL *ssl = (SSL*)X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx());
X509 *cert = X509_STORE_CTX_get_current_cert(ctx);
State *statePtr = (State*)SSL_get_app_data(ssl);
Tcl_Interp *interp = statePtr->interp;
int depth = X509_STORE_CTX_get_error_depth(ctx);
int err = X509_STORE_CTX_get_error(ctx);
dprintf("Verify: %d", ok);
if (statePtr->vcmd == (Tcl_Obj*)NULL) {
if (statePtr->vflags & SSL_VERIFY_FAIL_IF_NO_PEER_CERT) {
return ok;
} else {
return 1;
}
}
/* Create command to eval */
cmdPtr = Tcl_DuplicateObj(statePtr->vcmd);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("verify", -1));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewIntObj(depth));
Tcl_ListObjAppendElement(interp, cmdPtr, Tls_NewX509Obj(interp, cert));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewIntObj(ok));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj((char*)X509_verify_cert_error_string(err), -1));
statePtr->flags |= TLS_TCL_CALLBACK;
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
ok = EvalCallback(interp, statePtr, cmdPtr);
Tcl_DecrRefCount(cmdPtr);
statePtr->flags &= ~(TLS_TCL_CALLBACK);
return(ok); /* By default, leave verification unchanged. */
}
/*
*-------------------------------------------------------------------
*
* Tls_Error --
*
* Calls callback with list of errors.
*
* Side effects:
* The err field of the currently operative State is set
* to a string describing the SSL negotiation failure reason
*
*-------------------------------------------------------------------
*/
void
Tls_Error(State *statePtr, char *msg) {
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr, listPtr;
unsigned long err;
statePtr->err = msg;
dprintf("Called");
if (statePtr->callback == (Tcl_Obj*)NULL)
return;
/* Create command to eval */
cmdPtr = Tcl_DuplicateObj(statePtr->callback);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("error", -1));
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -1));
if (msg != NULL) {
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(msg, -1));
/* Tcl_SetErrorCode(interp, "SSL", msg, (char *)NULL); */
} else if ((msg = Tcl_GetStringFromObj(Tcl_GetObjResult(interp), NULL)) != NULL) {
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(msg, -1));
} else {
listPtr = Tcl_NewListObj(0, NULL);
while ((err = ERR_get_error()) != 0) {
Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj(ERR_reason_error_string(err, -1));
}
Tcl_ListObjAppendElement(interp, cmdPtr, listPtr);
}
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
EvalCallback(interp, statePtr, cmdPtr);
Tcl_DecrRefCount(cmdPtr);
}
/*
*-------------------------------------------------------------------
*
* KeyLogCallback --
*
* Write received key data to log file.
*
* Side effects:
* none
*
*-------------------------------------------------------------------
*/
void KeyLogCallback(const SSL *ssl, const char *line) {
char *str = getenv(SSLKEYLOGFILE);
FILE *fd;
if (str) {
fd = fopen(str, "a");
fprintf(fd, "%s\n",line);
fclose(fd);
}
}
/*
*-------------------------------------------------------------------
*
* Password Callback --
*
* Called when a password is needed to unpack RSA and PEM keys.
* Evals any bound password script and returns the result as
* the password string.
*
*-------------------------------------------------------------------
*/
static int
PasswordCallback(char *buf, int size, int verify, void *udata) {
State *statePtr = (State *) udata;
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
|
| ︙ | ︙ | |||
387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 |
strncpy(buf, ret, (size_t) size);
return (int)strlen(ret);
} else {
return -1;
}
}
cmdPtr = Tcl_DuplicateObj(statePtr->password);
Tcl_Preserve((ClientData) interp);
Tcl_Preserve((ClientData) statePtr);
Tcl_IncrRefCount(cmdPtr);
code = Tcl_EvalObjEx(interp, cmdPtr, TCL_EVAL_GLOBAL);
if (code != TCL_OK) {
#if (TCL_MAJOR_VERSION == 8) && (TCL_MINOR_VERSION < 6)
Tcl_BackgroundError(interp);
#else
Tcl_BackgroundException(interp, code);
| > > | 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 |
strncpy(buf, ret, (size_t) size);
return (int)strlen(ret);
} else {
return -1;
}
}
/* Create command to eval */
cmdPtr = Tcl_DuplicateObj(statePtr->password);
Tcl_Preserve((ClientData) interp);
Tcl_Preserve((ClientData) statePtr);
/* Eval callback and success for ok, abort for error, continue for continue */
Tcl_IncrRefCount(cmdPtr);
code = Tcl_EvalObjEx(interp, cmdPtr, TCL_EVAL_GLOBAL);
if (code != TCL_OK) {
#if (TCL_MAJOR_VERSION == 8) && (TCL_MINOR_VERSION < 6)
Tcl_BackgroundError(interp);
#else
Tcl_BackgroundException(interp, code);
|
| ︙ | ︙ | |||
447 448 449 450 451 452 453 |
static int
SessionCallback(const SSL *ssl, SSL_SESSION *session) {
State *statePtr = (State*)SSL_get_app_data((SSL *)ssl);
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
const unsigned char *ticket;
const unsigned char *session_id;
| < > < < | < < < < < | < < | < < | | | > | 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 |
static int
SessionCallback(const SSL *ssl, SSL_SESSION *session) {
State *statePtr = (State*)SSL_get_app_data((SSL *)ssl);
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
const unsigned char *ticket;
const unsigned char *session_id;
size_t len2;
unsigned int ulen;
dprintf("Called");
if (statePtr->callback == (Tcl_Obj*)NULL) {
return SSL_TLSEXT_ERR_OK;
} else if (ssl == NULL) {
return SSL_TLSEXT_ERR_NOACK;
}
/* Create command to eval */
cmdPtr = Tcl_DuplicateObj(statePtr->callback);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("session", -1));
/* Session id */
session_id = SSL_SESSION_get_id(session, &ulen);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewByteArrayObj(session_id, (int) ulen));
/* Session ticket */
SSL_SESSION_get0_ticket(session, &ticket, &len2);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewByteArrayObj(ticket, (int) len2));
/* Lifetime - number of seconds */
Tcl_ListObjAppendElement(interp, cmdPtr,
Tcl_NewLongObj((long) SSL_SESSION_get_ticket_lifetime_hint(session)));
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
EvalCallback(interp, statePtr, cmdPtr);
Tcl_DecrRefCount(cmdPtr);
return 0;
}
/*
*-------------------------------------------------------------------
*
* ALPN Callback for Servers and NPN Callback for Clients --
*
* Perform protocol (http/1.1, h2, h3, etc.) selection for the
* incoming connection. Called after Hello and server callbacks.
* Where 'out' is selected protocol and 'in' is the peer advertised list.
*
* Results:
* None
*
* Side effects:
* Calls callback (if defined)
*
|
| ︙ | ︙ | |||
525 526 527 528 529 530 531 |
State *statePtr = (State*)arg;
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
int code, res;
dprintf("Called");
| < < | > | > > > > > | < < | | > | < < > | < < > < < < > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | | | | | | > | > > > < | | > | < < | | > > | | < | > | < < < < | | > | | | | | | > | > | > | > | > | > | < < | | > > | | < | > | < < < < | | 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 |
State *statePtr = (State*)arg;
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
int code, res;
dprintf("Called");
if (ssl == NULL || arg == NULL) {
return SSL_TLSEXT_ERR_NOACK;
}
/* Select protocol */
if (SSL_select_next_proto(out, outlen, statePtr->protos, statePtr->protos_len,
in, inlen) == OPENSSL_NPN_NEGOTIATED) {
/* Match found */
res = SSL_TLSEXT_ERR_OK;
} else {
/* OPENSSL_NPN_NO_OVERLAP = No overlap, so use first item from client protocol list */
res = SSL_TLSEXT_ERR_NOACK;
}
if (statePtr->vcmd == (Tcl_Obj*)NULL) {
return res;
}
/* Create command to eval */
cmdPtr = Tcl_DuplicateObj(statePtr->vcmd);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("alpn", -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(*out, -1));
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
if ((code = EvalCallback(interp, statePtr, cmdPtr)) > 1) {
res = SSL_TLSEXT_ERR_NOACK;
} else if (code == 1) {
res = SSL_TLSEXT_ERR_OK;
} else {
res = SSL_TLSEXT_ERR_ALERT_FATAL;
}
Tcl_DecrRefCount(cmdPtr);
return res;
}
/*
*-------------------------------------------------------------------
*
* Advertise Protocols Callback for Next Protocol Negotiation (NPN) in ServerHello --
*
* called when a TLS server needs a list of supported protocols for Next
* Protocol Negotiation.
*
* Results:
* None
*
* Side effects:
*
* Return codes:
* SSL_TLSEXT_ERR_OK: NPN protocol selected. The connection continues.
* SSL_TLSEXT_ERR_NOACK: NPN protocol not selected. The connection continues.
*
*-------------------------------------------------------------------
*/
#ifdef USE_NPN
static int
NPNCallback(const SSL *ssl, const unsigned char **out, unsigned int *outlen, void *arg) {
State *statePtr = (State*)arg;
dprintf("Called");
if (ssl == NULL || arg == NULL) {
return SSL_TLSEXT_ERR_NOACK;
}
/* Set protocols list */
if (statePtr->protos != NULL) {
*out = statePtr->protos;
*outlen = statePtr->protos_len;
} else {
*out = NULL;
*outlen = 0;
return SSL_TLSEXT_ERR_NOACK;
}
return SSL_TLSEXT_ERR_OK;
}
#endif
/*
*-------------------------------------------------------------------
*
* SNI Callback for Servers --
*
* Perform server-side SNI hostname selection after receiving SNI extension
* in Client Hello. Called after hello callback but before ALPN callback.
*
* Results:
* None
*
* Side effects:
* Calls callback (if defined)
*
* Return codes:
* SSL_TLSEXT_ERR_OK: SNI hostname is accepted. The connection continues.
* SSL_TLSEXT_ERR_ALERT_FATAL: SNI hostname is not accepted. The connection
* is aborted. Default for alert is SSL_AD_UNRECOGNIZED_NAME.
* SSL_TLSEXT_ERR_ALERT_WARNING: SNI hostname is not accepted, warning alert
* sent (not supported in TLSv1.3). The connection continues.
* SSL_TLSEXT_ERR_NOACK: SNI hostname is not accepted and not acknowledged,
* e.g. if SNI has not been configured. The connection continues.
*
*-------------------------------------------------------------------
*/
static int
SNICallback(const SSL *ssl, int *alert, void *arg) {
State *statePtr = (State*)arg;
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
int code, res;
char *servername = NULL;
dprintf("Called");
if (ssl == NULL || arg == NULL) {
return SSL_TLSEXT_ERR_NOACK;
}
/* Only works for TLS 1.2 and earlier */
servername = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name);
if (!servername || servername[0] == '\0') {
return SSL_TLSEXT_ERR_NOACK;
}
if (statePtr->vcmd == (Tcl_Obj*)NULL) {
return SSL_TLSEXT_ERR_OK;
}
/* Create command to eval */
cmdPtr = Tcl_DuplicateObj(statePtr->vcmd);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("sni", -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(servername , -1));
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
if ((code = EvalCallback(interp, statePtr, cmdPtr)) > 1) {
res = SSL_TLSEXT_ERR_ALERT_WARNING;
*alert = SSL_AD_UNRECOGNIZED_NAME; /* Not supported by TLS 1.3 */
} else if (code == 1) {
res = SSL_TLSEXT_ERR_OK;
} else {
res = SSL_TLSEXT_ERR_ALERT_FATAL;
*alert = SSL_AD_UNRECOGNIZED_NAME; /* Not supported by TLS 1.3 */
}
Tcl_DecrRefCount(cmdPtr);
return res;
}
/*
*-------------------------------------------------------------------
*
* ClientHello Handshake Callback for Servers --
*
* Used by server to examine the server name indication (SNI) extension
* provided by the client in order to select an appropriate certificate to
* present, and make other configuration adjustments relevant to that server
* name and its configuration. This includes swapping out the associated
* SSL_CTX pointer, modifying the server's list of permitted TLS versions,
* changing the server's cipher list in response to the client's cipher list, etc.
* Called before SNI and ALPN callbacks.
*
* Results:
* None
*
* Side effects:
* Calls callback (if defined)
*
* Return codes:
* SSL_CLIENT_HELLO_RETRY: suspend the handshake, and the handshake function will return immediately
* SSL_CLIENT_HELLO_ERROR: failure, terminate connection. Set alert to error code.
* SSL_CLIENT_HELLO_SUCCESS: success
*
*-------------------------------------------------------------------
*/
static int
HelloCallback(const SSL *ssl, int *alert, void *arg) {
State *statePtr = (State*)arg;
Tcl_Interp *interp = statePtr->interp;
Tcl_Obj *cmdPtr;
int code, res;
const char *servername;
const unsigned char *p;
size_t len, remaining;
dprintf("Called");
if (statePtr->vcmd == (Tcl_Obj*)NULL) {
return SSL_CLIENT_HELLO_SUCCESS;
} else if (ssl == NULL || arg == NULL) {
return SSL_CLIENT_HELLO_ERROR;
}
/* Get names */
if (!SSL_client_hello_get0_ext(ssl, TLSEXT_TYPE_server_name, &p, &remaining) || remaining <= 2) {
*alert = SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER;
return SSL_CLIENT_HELLO_ERROR;
}
/* Extract the length of the supplied list of names. */
len = (*(p++) << 8);
len += *(p++);
if (len + 2 != remaining) {
*alert = SSL_R_SSLV3_ALERT_ILLEGAL_PARAMETER;
return SSL_CLIENT_HELLO_ERROR;
}
remaining = len;
/* The list in practice only has a single element, so we only consider the first one. */
if (remaining == 0 || *p++ != TLSEXT_NAMETYPE_host_name) {
*alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
return SSL_CLIENT_HELLO_ERROR;
}
remaining--;
/* Now we can finally pull out the byte array with the actual hostname. */
if (remaining <= 2) {
*alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
return SSL_CLIENT_HELLO_ERROR;
}
len = (*(p++) << 8);
len += *(p++);
if (len + 2 > remaining) {
*alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
return SSL_CLIENT_HELLO_ERROR;
}
remaining = len;
servername = (const char *)p;
/* Create command to eval */
cmdPtr = Tcl_DuplicateObj(statePtr->vcmd);
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("hello", -1));
Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj(servername, (int) len));
/* Eval callback command */
Tcl_IncrRefCount(cmdPtr);
if ((code = EvalCallback(interp, statePtr, cmdPtr)) > 1) {
res = SSL_CLIENT_HELLO_RETRY;
*alert = SSL_R_TLSV1_ALERT_USER_CANCELLED;
} else if (code == 1) {
res = SSL_CLIENT_HELLO_SUCCESS;
} else {
res = SSL_CLIENT_HELLO_ERROR;
*alert = SSL_R_TLSV1_ALERT_INTERNAL_ERROR;
}
Tcl_DecrRefCount(cmdPtr);
return res;
}
/********************/
/* Commands */
/********************/
/*
|
| ︙ | ︙ | |||
825 826 827 828 829 830 831 | #endif case TLS_TLS1_3: #if defined(NO_TLS1_3) || defined(OPENSSL_NO_TLS1_3) Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL); return TCL_ERROR; #else ctx = SSL_CTX_new(TLS_method()); | | | 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 |
#endif
case TLS_TLS1_3:
#if defined(NO_TLS1_3) || defined(OPENSSL_NO_TLS1_3)
Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
return TCL_ERROR;
#else
ctx = SSL_CTX_new(TLS_method());
SSL_CTX_set_min_proto_version(ctx, TLS1_3_VERSION);
SSL_CTX_set_max_proto_version(ctx, TLS1_3_VERSION);
break;
#endif
default:
break;
}
if (ctx == NULL) {
|
| ︙ | ︙ | |||
916 917 918 919 920 921 922 923 924 925 926 927 928 |
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
| > > | | | | | 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 |
dprintf("Called");
if (objc != 1) {
Tcl_WrongNumArgs(interp, 1, objv, "");
return TCL_ERROR;
}
ERR_clear_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) && !defined(OPENSSL_NO_SSL3_METHOD)
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_SSL3], -1));
#endif
#if !defined(NO_TLS1) && !defined(OPENSSL_NO_TLS1) && !defined(OPENSSL_NO_TLS1_METHOD)
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1], -1));
#endif
#if !defined(NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_1_METHOD)
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1_1], -1));
#endif
#if !defined(NO_TLS1_2) && !defined(OPENSSL_NO_TLS1_2) && !defined(OPENSSL_NO_TLS1_2_METHOD)
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);
|
| ︙ | ︙ | |||
972 973 974 975 976 977 978 979 980 981 982 983 984 985 |
dprintf("Called");
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 */
| > > | 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 |
dprintf("Called");
if (objc != 2) {
Tcl_WrongNumArgs(interp, 1, objv, "channel");
return(TCL_ERROR);
}
ERR_clear_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 */
|
| ︙ | ︙ | |||
1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 |
static int
ImportObjCmd(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 */
SSL_CTX *ctx = NULL;
Tcl_Obj *script = NULL;
Tcl_Obj *password = NULL;
Tcl_DString upperChannelTranslation, upperChannelBlocking, upperChannelEncoding, upperChannelEOFChar;
int idx, len;
int flags = TLS_TCL_INIT;
int server = 0; /* is connection incoming or outgoing? */
char *keyfile = NULL;
char *certfile = NULL;
unsigned char *key = NULL;
| > | 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 |
static int
ImportObjCmd(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 */
SSL_CTX *ctx = NULL;
Tcl_Obj *script = NULL;
Tcl_Obj *password = NULL;
Tcl_Obj *vcmd = NULL;
Tcl_DString upperChannelTranslation, upperChannelBlocking, upperChannelEncoding, upperChannelEOFChar;
int idx, len;
int flags = TLS_TCL_INIT;
int server = 0; /* is connection incoming or outgoing? */
char *keyfile = NULL;
char *certfile = NULL;
unsigned char *key = NULL;
|
| ︙ | ︙ | |||
1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 |
tls1_3 = 0;
#endif
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "channel ?options?");
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);
for (idx = 2; idx < objc; idx++) {
char *opt = Tcl_GetStringFromObj(objv[idx], NULL);
if (opt[0] != '-')
break;
OPTSTR("-cadir", CAdir);
OPTSTR("-cafile", CAfile);
OPTSTR("-certfile", certfile);
OPTSTR("-cipher", ciphers);
OPTSTR("-ciphers", ciphers);
OPTSTR("-ciphersuites", ciphersuites);
OPTOBJ("-command", script);
OPTSTR("-dhparams", DHparams);
OPTSTR("-keyfile", keyfile);
OPTSTR("-model", model);
OPTOBJ("-password", password);
OPTBOOL("-post_handshake", post_handshake);
| > > > > > < > < | | | | | | | | 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 |
tls1_3 = 0;
#endif
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "channel ?options?");
return TCL_ERROR;
}
ERR_clear_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);
for (idx = 2; idx < objc; idx++) {
char *opt = Tcl_GetStringFromObj(objv[idx], NULL);
if (opt[0] != '-')
break;
OPTOBJ("-alpn", alpn);
OPTSTR("-cadir", CAdir);
OPTSTR("-cafile", CAfile);
OPTBYTE("-cert", cert, cert_len);
OPTSTR("-certfile", certfile);
OPTSTR("-cipher", ciphers);
OPTSTR("-ciphers", ciphers);
OPTSTR("-ciphersuites", ciphersuites);
OPTOBJ("-command", script);
OPTSTR("-dhparams", DHparams);
OPTBYTE("-key", key, key_len);
OPTSTR("-keyfile", keyfile);
OPTSTR("-model", model);
OPTOBJ("-password", password);
OPTBOOL("-post_handshake", post_handshake);
OPTBOOL("-request", request);
OPTBOOL("-require", require);
OPTINT("-securitylevel", level);
OPTBOOL("-server", server);
OPTSTR("-servername", servername);
OPTSTR("-session_id", session_id);
OPTBOOL("-ssl2", ssl2);
OPTBOOL("-ssl3", ssl3);
OPTBOOL("-tls1", tls1);
OPTBOOL("-tls1.1", tls1_1);
OPTBOOL("-tls1.2", tls1_2);
OPTBOOL("-tls1.3", tls1_3);
OPTOBJ("-validatecommand", vcmd);
OPTOBJ("-vcmd", vcmd);
OPTBAD("option", "-alpn, -cadir, -cafile, -cert, -certfile, -cipher, -ciphersuites, -command, -dhparams, -key, -keyfile, -model, -password, -post_handshake, -request, -require, -securitylevel, -server, -servername, -session_id, -ssl2, -ssl3, -tls1, -tls1.1, -tls1.2, -tls1.3, or -validatecommand");
return TCL_ERROR;
}
if (request) verify |= SSL_VERIFY_CLIENT_ONCE | SSL_VERIFY_PEER;
if (request && require) verify |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
if (request && post_handshake) verify |= SSL_VERIFY_POST_HANDSHAKE;
if (verify == 0) verify = SSL_VERIFY_NONE;
proto |= (ssl2 ? TLS_PROTO_SSL2 : 0);
proto |= (ssl3 ? TLS_PROTO_SSL3 : 0);
proto |= (tls1 ? TLS_PROTO_TLS1 : 0);
proto |= (tls1_1 ? TLS_PROTO_TLS1_1 : 0);
proto |= (tls1_2 ? TLS_PROTO_TLS1_2 : 0);
proto |= (tls1_3 ? TLS_PROTO_TLS1_3 : 0);
|
| ︙ | ︙ | |||
1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 |
if (password) {
(void) Tcl_GetStringFromObj(password, &len);
if (len) {
statePtr->password = password;
Tcl_IncrRefCount(statePtr->password);
}
}
if (model != NULL) {
int mode;
/* Get the "model" context */
chan = Tcl_GetChannel(interp, model, &mode);
if (chan == (Tcl_Channel) NULL) {
Tls_Free((char *) statePtr);
| > > > > > > > > > | 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 |
if (password) {
(void) Tcl_GetStringFromObj(password, &len);
if (len) {
statePtr->password = password;
Tcl_IncrRefCount(statePtr->password);
}
}
/* allocate validate command */
if (vcmd) {
(void) Tcl_GetStringFromObj(vcmd, &len);
if (len) {
statePtr->vcmd = vcmd;
Tcl_IncrRefCount(statePtr->vcmd);
}
}
if (model != NULL) {
int mode;
/* Get the "model" context */
chan = Tcl_GetChannel(interp, model, &mode);
if (chan == (Tcl_Channel) NULL) {
Tls_Free((char *) statePtr);
|
| ︙ | ︙ | |||
1263 1264 1265 1266 1267 1268 1269 |
Tcl_AppendResult(interp, "couldn't construct ssl session: ", REASON(), (char *) NULL);
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
/* Set host server name */
if (servername) {
| | > | | | | | | | 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 |
Tcl_AppendResult(interp, "couldn't construct ssl session: ", REASON(), (char *) NULL);
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
/* Set host server name */
if (servername) {
/* Sets the server name indication (SNI) in ClientHello extension */
/* Per RFC 6066, hostname is a ASCII encoded string. */
if (!SSL_set_tlsext_host_name(statePtr->ssl, servername) && require) {
Tcl_AppendResult(interp, "setting TLS host name extension failed", (char *) NULL);
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
/* Configure server host name checks in the SSL client. Set DNS hostname to
name for peer certificate checks. SSL_set1_host has limitations. */
if (!SSL_add1_host(statePtr->ssl, servername)) {
Tcl_AppendResult(interp, "setting DNS host name failed", (char *) NULL);
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
}
/* Resume session id */
if (session_id && strlen(session_id) <= SSL_MAX_SID_CTX_LENGTH) {
/* SSL_set_session() */
if (!SSL_SESSION_set1_id_context(SSL_get_session(statePtr->ssl), session_id, (unsigned int) strlen(session_id))) {
Tcl_AppendResult(interp, "Resume session id ", session_id, " failed", (char *) NULL);
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);
|
| ︙ | ︙ | |||
1344 1345 1346 1347 1348 1349 1350 |
}
/*
* SSL Callbacks
*/
SSL_set_app_data(statePtr->ssl, (void *)statePtr); /* point back to us */
SSL_set_verify(statePtr->ssl, verify, VerifyCallback);
| | < > > > > > | > > > > > > > > > > > > > > | 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 |
}
/*
* SSL Callbacks
*/
SSL_set_app_data(statePtr->ssl, (void *)statePtr); /* point back to us */
SSL_set_verify(statePtr->ssl, verify, VerifyCallback);
SSL_set_info_callback(statePtr->ssl, InfoCallback);
/* Create Tcl_Channel BIO Handler */
statePtr->p_bio = BIO_new_tcl(statePtr, BIO_NOCLOSE);
statePtr->bio = BIO_new(BIO_f_ssl());
if (server) {
/* Server callbacks */
SSL_CTX_set_tlsext_servername_arg(statePtr->ctx, (void *)statePtr);
SSL_CTX_set_tlsext_servername_callback(statePtr->ctx, SNICallback);
SSL_CTX_set_client_hello_cb(statePtr->ctx, HelloCallback, (void *)statePtr);
if (statePtr->protos != NULL) {
SSL_CTX_set_alpn_select_cb(statePtr->ctx, ALPNCallback, (void *)statePtr);
#ifdef USE_NPN
if (tls1_2 == 0 && tls1_3 == 0) {
SSL_CTX_set_next_protos_advertised_cb(statePtr->ctx, NPNCallback, (void *)statePtr);
}
#endif
}
/* Enable server to send cert request after handshake (TLS 1.3 only) */
/* A write operation must take place for the Certificate Request to be
sent to the client, this can be done with SSL_do_handshake(). */
if (request && post_handshake) {
SSL_verify_client_post_handshake(statePtr->ssl);
}
/* Set server mode */
statePtr->flags |= TLS_TCL_SERVER;
SSL_set_accept_state(statePtr->ssl);
} else {
/* Client callbacks */
#ifdef USE_NPN
if (statePtr->protos != NULL && tls1_2 == 0 && tls1_3 == 0) {
SSL_CTX_set_next_proto_select_cb(statePtr->ctx, ALPNCallback, (void *)statePtr);
}
#endif
/* Session caching */
SSL_CTX_set_session_cache_mode(statePtr->ctx, SSL_SESS_CACHE_CLIENT | SSL_SESS_CACHE_NO_INTERNAL_STORE);
SSL_CTX_sess_set_new_cb(statePtr->ctx, SessionCallback);
/* Enable post handshake Authentication extension. TLS 1.3 only, not http/2. */
if (request && post_handshake) {
SSL_set_post_handshake_auth(statePtr->ssl, 1);
}
/* Set client mode */
SSL_set_connect_state(statePtr->ssl);
}
SSL_set_bio(statePtr->ssl, statePtr->p_bio, statePtr->p_bio);
BIO_set_ssl(statePtr->bio, statePtr->ssl, BIO_NOCLOSE);
/*
* End of SSL Init
|
| ︙ | ︙ | |||
1564 1565 1566 1567 1568 1569 1570 |
#if !defined(NO_TLS1_3) && !defined(OPENSSL_NO_TLS1_3)
off |= (ENABLED(proto, TLS_PROTO_TLS1_3) ? 0 : SSL_OP_NO_TLSv1_3);
#endif
break;
}
ERR_clear_error();
| < > | 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 |
#if !defined(NO_TLS1_3) && !defined(OPENSSL_NO_TLS1_3)
off |= (ENABLED(proto, TLS_PROTO_TLS1_3) ? 0 : SSL_OP_NO_TLSv1_3);
#endif
break;
}
ERR_clear_error();
ctx = SSL_CTX_new(method);
if (!ctx) {
return(NULL);
}
if (getenv(SSLKEYLOGFILE)) {
SSL_CTX_set_keylog_callback(ctx, KeyLogCallback);
}
|
| ︙ | ︙ | |||
1590 1591 1592 1593 1594 1595 1596 |
SSL_CTX_set_options(ctx, SSL_OP_CIPHER_SERVER_PREFERENCE);
}
SSL_CTX_set_app_data(ctx, (void*)interp); /* remember the interpreter */
SSL_CTX_set_options(ctx, SSL_OP_ALL); /* all SSL bug workarounds */
SSL_CTX_set_options(ctx, off); /* disable protocol versions */
#if OPENSSL_VERSION_NUMBER < 0x10101000L
| | | | | | | | | 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 |
SSL_CTX_set_options(ctx, SSL_OP_CIPHER_SERVER_PREFERENCE);
}
SSL_CTX_set_app_data(ctx, (void*)interp); /* remember the interpreter */
SSL_CTX_set_options(ctx, SSL_OP_ALL); /* all SSL bug workarounds */
SSL_CTX_set_options(ctx, off); /* disable protocol versions */
#if OPENSSL_VERSION_NUMBER < 0x10101000L
SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY); /* handle new handshakes in background. On by default in OpenSSL 1.1.1. */
#endif
SSL_CTX_sess_set_cache_size(ctx, 128);
/* Set user defined ciphers, cipher suites, and security level */
if ((ciphers != NULL) && !SSL_CTX_set_cipher_list(ctx, ciphers)) {
Tcl_AppendResult(interp, "Set ciphers failed: No valid ciphers", (char *) NULL);
SSL_CTX_free(ctx);
return NULL;
}
if ((ciphersuites != NULL) && !SSL_CTX_set_ciphersuites(ctx, ciphersuites)) {
Tcl_AppendResult(interp, "Set cipher suites failed: No valid ciphers", (char *) NULL);
SSL_CTX_free(ctx);
return NULL;
}
/* Set security level */
if (level > -1 && level < 6) {
/* SSL_set_security_level */
SSL_CTX_set_security_level(ctx, level);
}
|
| ︙ | ︙ | |||
1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 |
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;
}
statePtr = (State *) Tcl_GetChannelInstanceData(chan);
if (objc == 2) {
peer = SSL_get_peer_certificate(statePtr->ssl);
} else {
peer = SSL_get_certificate(statePtr->ssl);
}
if (peer) {
objPtr = Tls_NewX509Obj(interp, peer);
| > > | 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 |
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;
}
statePtr = (State *) Tcl_GetChannelInstanceData(chan);
/* Get certificate for peer or self */
if (objc == 2) {
peer = SSL_get_peer_certificate(statePtr->ssl);
} else {
peer = SSL_get_certificate(statePtr->ssl);
}
if (peer) {
objPtr = Tls_NewX509Obj(interp, peer);
|
| ︙ | ︙ | |||
1848 1849 1850 1851 1852 1853 1854 |
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("sbits", -1));
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewIntObj(SSL_get_cipher_bits(statePtr->ssl, NULL)));
ciphers = (char*)SSL_get_cipher(statePtr->ssl);
if ((ciphers != NULL) && (strcmp(ciphers, "(NONE)") != 0)) {
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("cipher", -1));
| | | 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 |
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("sbits", -1));
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewIntObj(SSL_get_cipher_bits(statePtr->ssl, NULL)));
ciphers = (char*)SSL_get_cipher(statePtr->ssl);
if ((ciphers != NULL) && (strcmp(ciphers, "(NONE)") != 0)) {
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("cipher", -1));
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(ciphers, -1));
}
/* Verify the X509 certificate presented by the peer */
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("verification", -1));
Tcl_ListObjAppendElement(interp, objPtr,
Tcl_NewStringObj(X509_verify_cert_error_string(SSL_get_verify_result(statePtr->ssl)), -1));
|
| ︙ | ︙ | |||
1973 1974 1975 1976 1977 1978 1979 |
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,
| | | 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 |
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));
/* Get OpenSSL-specific ID, not IANA ID */
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("id", -1));
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewIntObj((int) SSL_CIPHER_get_id(cipher)));
|
| ︙ | ︙ | |||
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 |
const unsigned char *session_id;
char buffer[SSL_MAX_MASTER_KEY_LENGTH];
/* Report the selected protocol as a result of the ALPN negotiation */
SSL_SESSION_get0_alpn_selected(session, &proto, &len2);
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("alpn", -1));
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj((char *)proto, (int) len2));
/* Resumable session */
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("resumable", -1));
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewIntObj(SSL_SESSION_is_resumable(session)));
/* Session start time (seconds since epoch) */
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("start_time", -1));
| > > > > > > > | 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 |
const unsigned char *session_id;
char buffer[SSL_MAX_MASTER_KEY_LENGTH];
/* Report the selected protocol as a result of the ALPN negotiation */
SSL_SESSION_get0_alpn_selected(session, &proto, &len2);
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("alpn", -1));
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj((char *)proto, (int) len2));
/* Report the selected protocol as a result of the NPN negotiation */
#ifdef USE_NPN
SSL_get0_next_proto_negotiated(ssl, &proto, &ulen);
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("npn", -1));
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj((char *)proto, (int) ulen));
#endif
/* Resumable session */
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("resumable", -1));
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewIntObj(SSL_SESSION_is_resumable(session)));
/* Session start time (seconds since epoch) */
Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("start_time", -1));
|
| ︙ | ︙ | |||
2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 |
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "subcommand ?args?");
return TCL_ERROR;
}
if (Tcl_GetIndexFromObj(interp, objv[1], commands, "command", 0,&cmd) != TCL_OK) {
return TCL_ERROR;
}
isStr = (cmd == C_STRREQ);
switch ((enum command) cmd) {
case C_REQ:
case C_STRREQ: {
EVP_PKEY *pkey=NULL;
X509 *cert=NULL;
| > > | 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 |
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "subcommand ?args?");
return TCL_ERROR;
}
if (Tcl_GetIndexFromObj(interp, objv[1], commands, "command", 0,&cmd) != TCL_OK) {
return TCL_ERROR;
}
ERR_clear_error();
isStr = (cmd == C_STRREQ);
switch ((enum command) cmd) {
case C_REQ:
case C_STRREQ: {
EVP_PKEY *pkey=NULL;
X509 *cert=NULL;
|
| ︙ | ︙ | |||
2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 |
Tcl_DecrRefCount(statePtr->callback);
statePtr->callback = NULL;
}
if (statePtr->password) {
Tcl_DecrRefCount(statePtr->password);
statePtr->password = NULL;
}
dprintf("Returning");
}
/*
*-------------------------------------------------------------------
*
| > > > > | 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 |
Tcl_DecrRefCount(statePtr->callback);
statePtr->callback = NULL;
}
if (statePtr->password) {
Tcl_DecrRefCount(statePtr->password);
statePtr->password = NULL;
}
if (statePtr->vcmd) {
Tcl_DecrRefCount(statePtr->vcmd);
statePtr->vcmd = NULL;
}
dprintf("Returning");
}
/*
*-------------------------------------------------------------------
*
|
| ︙ | ︙ | |||
2514 2515 2516 2517 2518 2519 2520 |
static int initialized = 0;
int status = TCL_OK;
#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
size_t num_locks;
#endif
if (uninitialize) {
| | | | | | | | | | | | | | | | | | 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 |
static int initialized = 0;
int status = TCL_OK;
#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
size_t num_locks;
#endif
if (uninitialize) {
if (!initialized) {
dprintf("Asked to uninitialize, but we are not initialized");
return(TCL_OK);
}
dprintf("Asked to uninitialize");
#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
Tcl_MutexLock(&init_mx);
if (locks) {
free(locks);
locks = NULL;
locksCount = 0;
}
#endif
initialized = 0;
#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
Tcl_MutexUnlock(&init_mx);
#endif
return(TCL_OK);
}
if (initialized) {
dprintf("Called, but using cached value");
return(status);
}
dprintf("Called");
#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
Tcl_MutexLock(&init_mx);
#endif
|
| ︙ | ︙ |
Modified generic/tlsInt.h from [c6bd77ee65] to [bb784703e5].
| ︙ | ︙ | |||
110 111 112 113 114 115 116 |
/*
* This structure describes the per-instance state of an SSL channel.
*
* The SSL processing context is maintained here, in the ClientData
*/
typedef struct State {
| | | | | | | | > | | | | | | 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 |
/*
* This structure describes the per-instance state of an SSL channel.
*
* The SSL processing context is maintained here, in the ClientData
*/
typedef struct State {
Tcl_Channel self; /* this socket channel */
Tcl_TimerToken timer;
int flags; /* see State.flags above */
int watchMask; /* current WatchProc mask */
int mode; /* current mode of parent channel */
Tcl_Interp *interp; /* interpreter in which this resides */
Tcl_Obj *callback; /* script called for tracing, info, and errors */
Tcl_Obj *password; /* script called for certificate password */
Tcl_Obj *vcmd; /* script called to verify or validate protocol config */
int vflags; /* verify flags */
SSL *ssl; /* Struct for SSL processing */
SSL_CTX *ctx; /* SSL Context */
BIO *bio; /* Struct for SSL processing */
BIO *p_bio; /* Parent BIO (that is layered on Tcl_Channel) */
char *protos; /* List of supported protocols in protocol format */
unsigned int protos_len; /* Length of protos */
char *err;
} State;
|
| ︙ | ︙ |
Modified library/tls.tcl from [cfce68af71] to [91a83164bf].
| ︙ | ︙ | |||
28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 |
#### iopts: [tls::import] option
### How many arguments the following the option to consume
variable socketOptionRules {
{0 -async sopts 0}
{* -myaddr sopts 1}
{0 -myport sopts 1}
{* -type sopts 1}
{* -cadir iopts 1}
{* -cafile iopts 1}
{* -cert iopts 1}
{* -certfile iopts 1}
{* -cipher iopts 1}
{* -ciphersuites iopts 1}
{* -command iopts 1}
{* -dhparams iopts 1}
{* -key iopts 1}
{* -keyfile iopts 1}
{* -password iopts 1}
{* -request iopts 1}
{* -require iopts 1}
{* -securitylevel iopts 1}
{* -autoservername discardOpts 1}
{* -servername iopts 1}
{* -session_id iopts 1}
| > > > < > > | 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 |
#### iopts: [tls::import] option
### How many arguments the following the option to consume
variable socketOptionRules {
{0 -async sopts 0}
{* -myaddr sopts 1}
{0 -myport sopts 1}
{* -type sopts 1}
{* -alpn iopts 1}
{* -cadir iopts 1}
{* -cafile iopts 1}
{* -cert iopts 1}
{* -certfile iopts 1}
{* -cipher iopts 1}
{* -ciphersuites iopts 1}
{* -command iopts 1}
{* -dhparams iopts 1}
{* -key iopts 1}
{* -keyfile iopts 1}
{* -password iopts 1}
{* -post_handshake iopts 1}
{* -request iopts 1}
{* -require iopts 1}
{* -securitylevel iopts 1}
{* -autoservername discardOpts 1}
{* -server iopts 1}
{* -servername iopts 1}
{* -session_id iopts 1}
{* -ssl2 iopts 1}
{* -ssl3 iopts 1}
{* -tls1 iopts 1}
{* -tls1.1 iopts 1}
{* -tls1.2 iopts 1}
{* -tls1.3 iopts 1}
{* -validatecommand iopts 1}
{* -vcmd iopts 1}
}
# tls::socket and tls::init options as a humane readable string
variable socketOptionsNoServer
variable socketOptionsServer
# Internal [switch] body to validate options
|
| ︙ | ︙ | |||
305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 |
log 1 "tls::_accept error: ${::errorInfo}"
close $chan
error $err $::errorInfo $::errorCode
} else {
log 2 "tls::_accept - called \"$callback\" succeeded"
}
}
#
# Sample callback for hooking: -
#
# error
# verify
# info
#
proc tls::callback {option args} {
variable debug
#log 2 [concat $option $args]
switch -- $option {
| > | > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | < < < < < < < < < < < < < | > | 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 |
log 1 "tls::_accept error: ${::errorInfo}"
close $chan
error $err $::errorInfo $::errorCode
} else {
log 2 "tls::_accept - called \"$callback\" succeeded"
}
}
#
# Sample callback for hooking: -
#
# error
# verify
# info
#
proc tls::callback {option args} {
variable debug
#log 2 [concat $option $args]
switch -- $option {
"error" {
foreach {chan msg} $args break
log 0 "TLS/$chan: error: $msg"
}
"info" {
# poor man's lassign
foreach {chan major minor state msg type} $args break
if {$msg != ""} {
append state ": $msg"
}
# For tracing
upvar #0 tls::$chan cb
set cb($major) $minor
log 2 "TLS/$chan: $major/$minor: $state"
}
"session" {
foreach {session_id ticket lifetime} $args break
log 0 "TLS/$chan: error: $msg"
}
default {
return -code error "bad option \"$option\":\
must be one of error, info, or session"
}
}
}
#
# Sample callback when return value is needed
#
proc tls::validate_command {option args} {
variable debug
#log 2 [concat $option $args]
switch -- $option {
"alpn" {
foreach {protocol} $args break
log 0 "TLS/$chan: alpn: $protocol"
}
"hello" {
foreach {servername} $args break
log 0 "TLS/$chan: hello: $servername"
}
"sni" {
foreach {servername} $args break
log 0 "TLS/$chan: sni: $servername"
}
"verify" {
# poor man's lassign
foreach {chan depth cert rc err} $args break
array set c $cert
if {$rc != "1"} {
log 1 "TLS/$chan: verify/$depth: Bad Cert: $err (rc = $rc)"
} else {
log 2 "TLS/$chan: verify/$depth: $c(subject)"
}
if {$debug > 0} {
return 1; # FORCE OK
} else {
return $rc
}
}
default {
return -code error "bad option \"$option\":\
must be one of alpn, info, or verify"
}
}
return 1
}
proc tls::xhandshake {chan} {
upvar #0 tls::$chan cb
if {[info exists cb(handshake)] && \
$cb(handshake) == "done"} {
|
| ︙ | ︙ |