# stub library C source files to compile in TEA_ADD_STUB_SOURCES,
# and runtime Tcl library files in TEA_ADD_TCL_SOURCES.
# This defines PKG(_STUB)_SOURCES, PKG(_STUB)_OBJECTS, PKG_HEADERS
# and PKG_TCL_SOURCES.
#-----------------------------------------------------------------------


    vars="tls.c tlsBIO.c tlsDigest.c tlsInfo.c tlsIO.c tlsX509.c"
    for i in $vars; do
	case $i in
	    \$*)
		# allow $-var names
		PKG_SOURCES="$PKG_SOURCES $i"
		PKG_OBJECTS="$PKG_OBJECTS $i"
		;;

# public headers that need to be installed in TEA_ADD_HEADERS,
# stub library C source files to compile in TEA_ADD_STUB_SOURCES,
# and runtime Tcl library files in TEA_ADD_TCL_SOURCES.
# This defines PKG(_STUB)_SOURCES, PKG(_STUB)_OBJECTS, PKG_HEADERS
# and PKG_TCL_SOURCES.
#-----------------------------------------------------------------------

TEA_ADD_SOURCES([tls.c tlsBIO.c tlsDigest.c tlsInfo.c tlsIO.c tlsX509.c])
TEA_ADD_HEADERS([generic/tls.h])
TEA_ADD_INCLUDES([])
TEA_ADD_LIBS([])
TEA_ADD_CFLAGS([])
TEA_ADD_STUB_SOURCES([])
TEA_ADD_TCL_SOURCES([library/tls.tcl])

	    <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::digests</b></dd>
	    <dd><b>tls::macs</b></dd>
	    <dd><b>tls::protocols</b></dd>
	    <dd><b>tls::version</b></dd>
	    <dt>&nbsp;</dt>
	    <dd><b>tls::digest</b> <em>type ?options?</em></dd>
	    <dd><b>tls::cmac</b> <em>type</em> <b>-cipher</b> <em>name ?options?</em></dd>
	    <dd><b>tls::hmac</b> <em>type</em> <b>-key</b> <em>key ?options?</em></dd>
	    <dd><b>tls::md4</b> <em>data</em></dd>
	    <dd><b>tls::md5</b> <em>data</em></dd>
	    <dd><b>tls::sha1</b> <em>data</em></dd>
	    <dd><b>tls::sha256</b> <em>data</em></dd>
	    <dd><b>tls::sha512</b> <em>data</em></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 8.5</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::digests"><b>tls::digests</b></a><br>
<a href="#tls::macs"><b>tls::macs</b></a><br>
<a href="#tls::protocols"><b>tls::protocols</b></a><br>
<a href="#tls::version"><b>tls::version</b></a><br>
<br>
<a href="#tls::digest"><b>tls::digest</b> <i>type ?options?</i></a><br>
<a href="#tls::cmac"><b>tls::cmac</b> <i>type</i> <b>-cipher</b> <i>name ?options?</i></a><br>
<a href="#tls::hmac"><b>tls::hmac</b> <i>type</i> <b>-key</b> <i>key ?options?</i></a><br>
<a href="#tls::md4"><b>tls::md4</b> <i>data</i></a><br>
<a href="#tls::md5"><b>tls::md5</b> <i>data</i></a><br>
<a href="#tls::sha1"><b>tls::sha1</b> <i>data</i></a><br>
<a href="#tls::sha256"><b>tls::sha256</b> <i>data</i></a><br>
<a href="#tls::sha512"><b>tls::sha512</b> <i>data</i></a><br>
</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
<strong>Tcl_StackChannel</strong>

	<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>Without any args, returns a list of all ciphers. With
	<em>protocol</em>, only the ciphers supported for that protocol
	are returned where <em>protocol</em> 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::digests"><strong>tls::digests</strong></a></dt>
    <dd>Returns a list of the hash algorithms for <b>tls::digest</b> command.</dd>

    <dt><a name="tls::macs"><strong>tls::macs</strong></a></dt>
    <dd>Returns a list of the available Message Authentication Codes (MAC) for
	the <b>tls::digest</b> command.</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>. Exact list depends on OpenSSL version and
	compile time flags.</dd>

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

    <br>
    <dt><a name="tls::digest"><strong>tls::digest</strong> <em>digest ?-bin|-hex?
	[-file filename | -command cmdName | -chan channelId | ?-data? data]</em></a></dt>
    <dd>Calculate the message digest for data using <em>digest</em> hash
	function. Returns value as a hex string (default) or as a binary value
	with <b>-bin</b> option. Argument <em>digest</em> can be any OpenSSL
	supported hash function including: <b>md4</b>, <b>md5</b>, <b>sha1</b>,
	<b>sha256</b>, <b>sha512</b>, <b>sha3-256</b>, etc. See
	<b>tls::digests</b> command for a full list.
	<br>
	Using the <b>-data</b> option will immediately return the message
	digest for <em>data</em> in the specified format.
	<br>
	Using the <b>-file</b> option will open file <em>filename</em>, read
	the file data, close the file, and return the message digest in the
	specified format. This uses the TCL APIs, so VFS files are supported.
	<br>
	Using the <b>-chan</b> option, a stacked channel is created for
	<em>channelId</em> and data read from the channel is used to calculate
	a message digest with the result returned with the last read operation
	before EOF. Channel is automatically set to binary mode.
	<br>
	Using the <b>-command</b> option, a new command <em>cmdName</em> is
	created and returned. To add data to the hash function, call
	&quot;<em>cmdName</em> <b>update</b> <em>data</em>&quot;, where data is
	the data to add. When done, call &quot;<em>cmdName</em> <b>finalize</b>&quot;
	to return the message digest.
	</dd>

    <dt><a name="tls::cmac"><strong>tls::cmac</strong> <em>digest</em>
	<strong>-cipher</strong> <em>name</em> ?-bin|-hex? [-file filename |
	-command cmdName | -chan channelId | ?-data? data]</em></a></dt>
    <dd>Calculate the Cipher-based Message Authentication Code (CMAC). Same arguments
	as <b>tls::digest</b> with additional option <b>-cipher</b> to specify the
	cipher to use and for certain ciphers, <b>-key</b> to specify the key.</dd>

    <dt><a name="tls::hmac"><strong>tls::hmac</strong> <em>digest</em>
	<strong>-key</strong> <em>key</em> ?-bin|-hex? [-file filename |
	-command cmdName | -chan channelId | ?-data? data]</em></a></dt>
    <dd>Calculate the Hashed Message Authentication Code (HMAC). Same arguments
	as <b>tls::digest</b> with additional option <b>-key</b> to specify the
	key to use. To salt a password, append or prepend the salt
	data to the password. </dd>

    <dt><a name="tls::md4"><strong>tls::md4</strong> <em>data</em></a></dt>
    <dd>Returns the MD4 message-digest for <em>data</em> as a hex string.</dd>

    <dt><a name="tls::md5"><strong>tls::md5</strong> <em>data</em></a></dt>
    <dd>Returns the MD5 message-digest for <em>data</em> as a hex string.</dd>

    <dt><a name="tls::sha1"><strong>tls::sha1</strong> <em>data</em></a></dt>
    <dd>Returns the SHA1 secure hash algorithm digest for <em>data</em> as a hex string.</dd>

    <dt><a name="tls::sha256"><strong>tls::sha256</strong> <em>data</em></a></dt>
    <dd>Returns the SHA-2 SHA256 secure hash algorithm digest for <em>data</em> as a hex string.</dd>

    <dt><a name="tls::sha512"><strong>tls::sha512</strong> <em>data</em></a></dt>
    <dd>Returns the SHA-2 SHA512 secure hash algorithm digest for <em>data</em> as a hex 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

/*
 *  Copyright (C) 1997-2000 Matt Newman <[email protected]>
 *
 * Stylized option processing - requires consistent
 * external vars: opt, idx, objc, objv
 */

#ifndef _TCL_OPTS_H
#define _TCL_OPTS_H

#define OPTFLAG(option, var, val)		\
    if (strcmp(opt, (option)) == 0) {		\
	var = val;				\
	continue;				\
    }

#define OPT_PROLOG(option)			\
    if (strcmp(opt, (option)) == 0) {		\
	if (++idx >= objc) {			\
	    Tcl_AppendResult(interp,		\
		"no argument given for ",	\
		(option), " option",		\
		(char *) NULL);			\
	    return TCL_ERROR;			\
	}

#define OPT_POSTLOG()				\
	continue;				\
    }

#define OPTOBJ(option, var)			\
    OPT_PROLOG(option)				\
    var = objv[idx];				\
    OPT_POSTLOG()

#define OPTSTR(option, var)			\
    OPT_PROLOG(option)				\

    OPT_PROLOG(option)				\
    if (Tcl_GetBooleanFromObj(interp, objv[idx],\
	    &(var)) != TCL_OK) {		\
	    return TCL_ERROR;			\
    }						\
    OPT_POSTLOG()

#define OPTBYTE(option, var, lvar)		\
    OPT_PROLOG(option)				\
    var = Tcl_GetByteArrayFromObj(objv[idx], &(lvar));\
    OPT_POSTLOG()

#define OPTBAD(type, list)			\
    Tcl_AppendResult(interp, "bad ", (type),	\
		" \"", opt, "\": must be ",	\
		(list), (char *) NULL)

#endif /* _TCL_OPTS_H */

 *
 */

#include "tlsInt.h"
#include "tclOpts.h"
#include <stdio.h>
#include <stdlib.h>
#include <openssl/crypto.h>
#include <openssl/ssl.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/rsa.h>
#include <openssl/safestack.h>

/* Min OpenSSL version */
#if OPENSSL_VERSION_NUMBER < 0x10101000L
#error "Only OpenSSL v1.1.1 or later is supported"
#endif

/*
 * External functions
 */

/*
 * Forward declarations
 */

#define F2N(key, dsp) \
	(((key) == NULL) ? (char *) NULL : \
		Tcl_TranslateFileName(interp, (key), (dsp)))


static SSL_CTX *CTX_Init(State *statePtr, int isServer, int proto, char *key,
		char *certfile, unsigned char *key_asn1, unsigned char *cert_asn1,
		int key_asn1_len, int cert_asn1_len, char *CAdir, char *CAfile,
		char *ciphers, char *ciphersuites, int level, char *DHparams);

static int	TlsLibInit(int uninitialize);

    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));

    } 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_DecrRefCount(cmdPtr);

    Tcl_Release((ClientData) statePtr);

    /* If successful, pass back password string and truncate if too long */
    if (code == TCL_OK) {
	int len;
	char *ret = (char *) Tcl_GetStringFromObj(Tcl_GetObjResult(interp), &len);
	if (len > size-1) {
	    len = size-1;
	}
	strncpy(buf, ret, (size_t) len);
	buf[len] = '\0';
	Tcl_Release((ClientData) interp);
	return(len);
    }
    Tcl_Release((ClientData) interp);
    return -1;
}

/*
 *-------------------------------------------------------------------

    cmdPtr = Tcl_DuplicateObj(statePtr->callback);
    Tcl_ListObjAppendElement(interp, cmdPtr, Tcl_NewStringObj("session", -1));
    Tcl_ListObjAppendElement(interp, cmdPtr,
	    Tcl_NewStringObj(Tcl_GetChannelName(statePtr->self), -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);

    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(Tcl_GetChannelName(statePtr->self), -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         */
/********************/

























































































































































































































/*
 *-------------------------------------------------------------------
 *
 * HandshakeObjCmd --
 *
 *	This command is used to verify whether the handshake is complete
 *	or not.

    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 */
    chan = Tcl_GetTopChannel(chan);
    if (Tcl_GetChannelType(chan) != Tls_ChannelType()) {

    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;
    int key_len                 = 0;
    unsigned char *cert         = NULL;
    int cert_len                = 0;
    char *ciphers	        = NULL;
    char *ciphersuites	        = NULL;
    char *CAfile	        = NULL;
    char *CAdir		        = NULL;
    char *DHparams	        = NULL;
    char *model		        = NULL;
    char *servername	        = NULL;	/* hostname for Server Name Indication */

    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);

		"\": not a TLS channel", NULL);
	    Tcl_SetErrorCode(interp, "TLS", "IMPORT", "CHANNEL", "INVALID", (char *) NULL);
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
	ctx = ((State *)Tcl_GetChannelInstanceData(chan))->ctx;
    } else {
	if ((ctx = CTX_Init(statePtr, server, proto, keyfile, certfile, key, cert, key_len,
	    cert_len, CAdir, CAfile, ciphers, ciphersuites, level, DHparams)) == NULL) {
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
    }

    statePtr->ctx = ctx;

    /* Enable Application-Layer Protocol Negotiation. Examples are: http/1.0,
	http/1.1, h2, h3, ftp, imap, pop3, xmpp-client, xmpp-server, mqtt, irc, etc. */
    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);
		Tcl_SetErrorCode(interp, "TLS", "IMPORT", "ALPN", "FAILED", (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;
	}

	/* SSL_set_alpn_protos makes a copy of the protocol-list */
	/* 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);

    int off = 0;
    int load_private_key;
    const SSL_METHOD *method;

    dprintf("Called");

    if (!proto) {
	Tcl_AppendResult(interp, "no valid protocol selected", NULL);
	return NULL;
    }

    /* create SSL context */
#if OPENSSL_VERSION_NUMBER >= 0x10100000L || defined(NO_SSL2) || defined(OPENSSL_NO_SSL2)
    if (ENABLED(proto, TLS_PROTO_SSL2)) {
	Tcl_AppendResult(interp, "SSL2 protocol not supported", NULL);
	return NULL;
    }
#endif
#if defined(NO_SSL3) || defined(OPENSSL_NO_SSL3)
    if (ENABLED(proto, TLS_PROTO_SSL3)) {
	Tcl_AppendResult(interp, "SSL3 protocol not supported", NULL);
	return NULL;
    }
#endif
#if defined(NO_TLS1) || defined(OPENSSL_NO_TLS1)
    if (ENABLED(proto, TLS_PROTO_TLS1)) {
	Tcl_AppendResult(interp, "TLS 1.0 protocol not supported", NULL);
	return NULL;
    }
#endif
#if defined(NO_TLS1_1) || defined(OPENSSL_NO_TLS1_1)
    if (ENABLED(proto, TLS_PROTO_TLS1_1)) {
	Tcl_AppendResult(interp, "TLS 1.1 protocol not supported", NULL);
	return NULL;
    }
#endif
#if defined(NO_TLS1_2) || defined(OPENSSL_NO_TLS1_2)
    if (ENABLED(proto, TLS_PROTO_TLS1_2)) {
	Tcl_AppendResult(interp, "TLS 1.2 protocol not supported", NULL);
	return NULL;
    }
#endif
#if defined(NO_TLS1_3) || defined(OPENSSL_NO_TLS1_3)
    if (ENABLED(proto, TLS_PROTO_TLS1_3)) {
	Tcl_AppendResult(interp, "TLS 1.3 protocol not supported", NULL);
	return NULL;
    }
#endif
    if (proto == 0) {
	/* Use full range */
	SSL_CTX_set_min_proto_version(ctx, 0);
	SSL_CTX_set_max_proto_version(ctx, 0);

    }
#endif

    /* Force cipher selection order by server */
    if (!isServer) {
	SSL_CTX_set_options(ctx, SSL_OP_CIPHER_SERVER_PREFERENCE);
    }

#if OPENSSL_VERSION_NUMBER < 0x10100000L
    OpenSSL_add_all_algorithms(); /* Load ciphers and digests */
#endif

    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, SSL_OP_NO_COMPRESSION);	/* disable compression even if supported */
    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. */

    if (objc < 2 || objc > 3 || (objc == 3 && !strcmp(Tcl_GetString(objv[1]), "-local"))) {
	Tcl_WrongNumArgs(interp, 1, objv, "?-local? channel");
	return TCL_ERROR;
    }

    /* Get channel Id */
    channelName = Tcl_GetStringFromObj(objv[(objc == 2 ? 1 : 2)], NULL);
    chan = Tcl_GetChannel(interp, channelName, &mode);
    if (chan == (Tcl_Channel) NULL) {
	return TCL_ERROR;
    }

    /* Make sure to operate on the topmost channel */
    chan = Tcl_GetTopChannel(chan);

    }

    /* Verify mode depth */
    LAPPEND_INT(interp, objPtr, "verifyDepth", SSL_get_verify_depth(statePtr->ssl));

    /* Report the selected protocol as a result of the negotiation */
    SSL_get0_alpn_selected(statePtr->ssl, &proto, &len);
    LAPPEND_STR(interp, objPtr, "alpn", (char *)proto, (int) len);
    LAPPEND_STR(interp, objPtr, "protocol", SSL_get_version(statePtr->ssl), -1);

    /* Valid for non-RSA signature and TLS 1.3 */
    if (objc == 2) {
	res = SSL_get_peer_signature_nid(statePtr->ssl, &nid);
    } else {
	res = SSL_get_signature_nid(statePtr->ssl, &nid);

    const EVP_MD *md;

    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()) {

	size_t len2;
	unsigned int ulen;
	const unsigned char *session_id, *proto;
	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);
	LAPPEND_STR(interp, objPtr, "alpn", (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);
	LAPPEND_STR(interp, objPtr, "npn", (char *) proto, (int) ulen);
#endif

	/* Resumable session */
	LAPPEND_BOOL(interp, objPtr, "resumable", SSL_SESSION_is_resumable(session));

	/* Session start time (seconds since epoch) */
	LAPPEND_LONG(interp, objPtr, "start_time", SSL_SESSION_get_time(session));

	/* Timeout value - SSL_CTX_get_timeout (in seconds) */
	LAPPEND_LONG(interp, objPtr, "timeout", SSL_SESSION_get_timeout(session));

	/* Session id - TLSv1.2 and below only */
	session_id = SSL_SESSION_get_id(session, &ulen);
	LAPPEND_BARRAY(interp, objPtr, "session_id", session_id, (int) ulen);

	/* Session context */
	session_id = SSL_SESSION_get0_id_context(session, &ulen);
	LAPPEND_BARRAY(interp, objPtr, "session_context", session_id, (int) ulen);

	/* Session ticket - client only */
	SSL_SESSION_get0_ticket(session, &ticket, &len2);
	LAPPEND_BARRAY(interp, objPtr, "session_ticket", ticket, (int) len2);

	/* Session ticket lifetime hint (in seconds) */
	LAPPEND_LONG(interp, objPtr, "lifetime", SSL_SESSION_get_ticket_lifetime_hint(session));

	/* Ticket app data */
	SSL_SESSION_get0_ticket_appdata(session, &ticket, &len2);
	LAPPEND_BARRAY(interp, objPtr, "ticket_app_data", ticket, (int) len2);

	/* Get master key */
	len2 = SSL_SESSION_get_master_key(session, buffer, SSL_MAX_MASTER_KEY_LENGTH);
	LAPPEND_BARRAY(interp, objPtr, "master_key", buffer, (int) len2);

	/* Compression id */
	unsigned int id = SSL_SESSION_get_compress_id(session);
	LAPPEND_STR(interp, objPtr, "compression_id", id == 1 ? "zlib" : "none", -1);
    }

    /* Compression info */

    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *




























 * MiscObjCmd -- misc commands
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------
 */
static int
MiscObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    static const char *commands [] = { "req", "strreq", NULL };
    enum command { C_REQ, C_STRREQ, C_DUMMY };

    int cmd, isStr;
    char buffer[16384];

    dprintf("Called");

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "subcommand ?args?");
	return TCL_ERROR;

    switch ((enum command) cmd) {
	case C_REQ:
	case C_STRREQ: {
	    EVP_PKEY *pkey=NULL;
	    X509 *cert=NULL;
	    X509_NAME *name=NULL;
	    Tcl_Obj **listv;
	    int listc,i;


	    BIO *out=NULL;

	    char *k_C="",*k_ST="",*k_L="",*k_O="",*k_OU="",*k_CN="",*k_Email="";
	    char *keyout,*pemout,*str;
	    int keysize,serial=0,days=365;

	    pemout=Tcl_GetString(objv[4]);
	    if (isStr) {
		Tcl_SetVar(interp,keyout,"",0);
		Tcl_SetVar(interp,pemout,"",0);
	    }

	    if (objc>=6) {
		if (Tcl_ListObjGetElements(interp, objv[5],
			&listc, &listv) != TCL_OK) {
		    return TCL_ERROR;
		}

		if ((listc%2) != 0) {
		    Tcl_SetResult(interp,"Information list must have even number of arguments",NULL);
		    return TCL_ERROR;
		}

#endif
    if (Tcl_PkgRequire(interp, "Tcl", "8.5-", 0) == NULL) {
	return TCL_ERROR;
    }
#endif

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


    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::misc", MiscObjCmd, (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);

    Tls_DigestCommands(interp);
    Tls_InfoCommands(interp);

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

    return Tcl_PkgProvide(interp, PACKAGE_NAME, PACKAGE_VERSION);
}

/*
 * Copyright (C) 1997-2000 Matt Newman <[email protected]>
 *
 * Provides BIO layer to interface openssl to Tcl.
 */

#include "tlsInt.h"

static int BioWrite(BIO *bio, const char *buf, int bufLen) {
    Tcl_Channel chan;
    int ret;
    int tclEofChan, tclErrno;

    chan = Tls_GetParent((State *) BIO_get_data(bio), 0);

    dprintf("[chan=%p] BioWrite(%p, <buf>, %d)", (void *)chan, (void *) bio, bufLen);

    ret = (int) Tcl_WriteRaw(chan, buf, bufLen);

    tclEofChan = Tcl_Eof(chan);
    tclErrno = Tcl_GetErrno();


    dprintf("[chan=%p] BioWrite(%d) -> %d [tclEof=%d; tclErrno=%d]", (void *) chan, bufLen, ret, tclEofChan, Tcl_GetErrno());

    BIO_clear_flags(bio, BIO_FLAGS_WRITE | BIO_FLAGS_SHOULD_RETRY);

    if (tclEofChan && ret <= 0) {
	dprintf("Got EOF while reading, returning a Connection Reset error which maps to Soft EOF");
	Tcl_SetErrno(ECONNRESET);
	ret = 0;

    if (ret != -1 || (ret == -1 && tclErrno == EAGAIN)) {
	if (BIO_should_read(bio)) {
	    dprintf("Setting should retry read flag");

	    BIO_set_retry_read(bio);
	}
    }
    return(ret);
}

static int BioRead(BIO *bio, char *buf, int bufLen) {
    Tcl_Channel chan;
    Tcl_Size ret = 0;
    int tclEofChan, tclErrno;

    chan = Tls_GetParent((State *) BIO_get_data(bio), 0);

    dprintf("[chan=%p] BioRead(%p, <buf>, %d)", (void *) chan, (void *) bio, bufLen);

    if (buf == NULL) {
	return 0;
    }

    ret = Tcl_ReadRaw(chan, buf, bufLen);

    tclEofChan = Tcl_Eof(chan);
    tclErrno = Tcl_GetErrno();


    dprintf("[chan=%p] BioRead(%d) -> %d [tclEof=%d; tclErrno=%d]", (void *) chan, bufLen, ret, tclEofChan, tclErrno);

    BIO_clear_flags(bio, BIO_FLAGS_READ | BIO_FLAGS_SHOULD_RETRY);

    if (tclEofChan && ret <= 0) {
	dprintf("Got EOF while reading, returning a Connection Reset error which maps to Soft EOF");
	Tcl_SetErrno(ECONNRESET);
	ret = 0;

	if (BIO_should_write(bio)) {
	    dprintf("Setting should retry write flag");

	    BIO_set_retry_write(bio);
	}
    }

    dprintf("BioRead(%p, <buf>, %d) [%p] returning %i", (void *) bio, bufLen, (void *) chan, ret);


    return(ret);
}

static int BioPuts(BIO *bio, const char *str) {
    dprintf("BioPuts(%p, <string:%p>) called", bio, str);

    return BioWrite(bio, str, (int) strlen(str));
}

/*
 * Message Digests Module
 *
 * Provides commands to calculate a message digest using a specified hash function.
 *
 * Copyright (C) 2023 Brian O'Hagan
 *
 */

#include "tlsInt.h"
#include "tclOpts.h"
#include <tcl.h>
#include <stdio.h>
#include <string.h>
#include <openssl/evp.h>
#include <openssl/cmac.h>
#include <openssl/hmac.h>

/* Constants */
const char *hex = "0123456789ABCDEF";

/* Macros */
#define BUFFER_SIZE 65536
#define CHAN_EOF 0x10

/* Digest format and operation */
#define BIN_FORMAT 0x01
#define HEX_FORMAT 0x02
#define TYPE_MD    0x10
#define TYPE_HMAC  0x20
#define TYPE_CMAC  0x40

/*
 * This structure defines the per-instance state of a digest operation.
 */
typedef struct DigestState {
	Tcl_Channel self;	/* This socket channel */
	Tcl_TimerToken timer;	/* Timer for read events */

	int flags;		/* Chan config flags */
	int watchMask;		/* Current WatchProc mask */
	int mode;		/* Current mode of parent channel */
	int format;		/* Digest format and operation */

	Tcl_Interp *interp;	/* Current interpreter */
	EVP_MD_CTX *ctx;	/* MD Context */
	HMAC_CTX *hctx;		/* HMAC Context */
	CMAC_CTX *cctx;		/* CMAC Context */
	Tcl_Command token;	/* Command token */
} DigestState;

/*
 *-------------------------------------------------------------------
 *
 * Tls_DigestNew --
 *
 *	This function creates a digest state structure
 *
 * Returns:
 *	Digest structure pointer
 *
 * Side effects:
 *	Creates structure
 *
 *-------------------------------------------------------------------
 */
DigestState *Tls_DigestNew(Tcl_Interp *interp, int format) {
    DigestState *statePtr;

    statePtr = (DigestState *) ckalloc((unsigned) sizeof(DigestState));
    if (statePtr != NULL) {
	memset(statePtr, 0, sizeof(DigestState));
	statePtr->self	= NULL;		/* This socket channel */
	statePtr->timer = NULL;		/* Timer to flush data */
	statePtr->flags = 0;		/* Chan config flags */
	statePtr->watchMask = 0;	/* Current WatchProc mask */
	statePtr->mode	= 0;		/* Current mode of parent channel */
	statePtr->format = format;	/* Digest format and operation */
	statePtr->interp = interp;	/* Current interpreter */
	statePtr->ctx = NULL;		/* MD Context */
	statePtr->hctx = NULL;		/* HMAC Context */
	statePtr->cctx = NULL;		/* CMAC Context */
	statePtr->token = NULL;		/* Command token */
    }
    return statePtr;
}

/*
 *-------------------------------------------------------------------
 *
 * Tls_DigestFree --
 *
 *	This function removes a digest state structure
 *
 * Returns:
 *	Nothing
 *
 * Side effects:
 *	Removes structure
 *
 *-------------------------------------------------------------------
 */
void Tls_DigestFree(DigestState *statePtr) {
    if (statePtr == (DigestState *) NULL) {
	return;
    }

    if (statePtr->ctx != (EVP_MD_CTX *) NULL) {
	EVP_MD_CTX_free(statePtr->ctx);
    }
    if (statePtr->hctx != (HMAC_CTX *) NULL) {
	HMAC_CTX_free(statePtr->hctx);
    }
    if (statePtr->cctx != (CMAC_CTX *) NULL) {
	CMAC_CTX_free(statePtr->cctx);
    }
    ckfree(statePtr);
}

/*******************************************************************/

/*
 *-------------------------------------------------------------------
 *
 * Tls_DigestInit --
 *
 *	Initialize a hash function
 *
 * Returns:
 *	TCL_OK if successful or TCL_ERROR for failure with result set
 *	to error message.
 *
 * Side effects:
 *	No result or error message
 *
 *-------------------------------------------------------------------
 */
int Tls_DigestInit(Tcl_Interp *interp, DigestState *statePtr, const EVP_MD *md,
	const EVP_CIPHER *cipher, Tcl_Obj *keyObj) {
    int key_len, res = 0;
    const unsigned char *key;

    /* Create message digest context */
    if (statePtr->format & TYPE_MD) {
	statePtr->ctx = EVP_MD_CTX_new();
	res = (statePtr->ctx != NULL);
    } else if (statePtr->format & TYPE_HMAC) {
	statePtr->hctx = HMAC_CTX_new();
	res = (statePtr->hctx != NULL);
    } else if (statePtr->format & TYPE_CMAC) {
	statePtr->cctx = CMAC_CTX_new();
	res = (statePtr->cctx != NULL);
    }
    if (!res) {
	Tcl_AppendResult(interp, "Create digest context failed: ", REASON(), NULL);
	return TCL_ERROR;
    }

    /* Initialize hash function */
    if (statePtr->format & TYPE_MD) {
	res = EVP_DigestInit_ex(statePtr->ctx, md, NULL);
    } else if (statePtr->format & TYPE_HMAC) {
	key = Tcl_GetByteArrayFromObj(keyObj, &key_len);
	res = HMAC_Init_ex(statePtr->hctx, (const void *) key, key_len, md, NULL);
    } else if (statePtr->format & TYPE_CMAC) {
	key = Tcl_GetByteArrayFromObj(keyObj, &key_len);
	res = CMAC_Init(statePtr->cctx, (const void *) key, key_len, cipher, NULL);
    }
    if (!res) {
	Tcl_AppendResult(interp, "Initialize digest failed: ", REASON(), NULL);
	return TCL_ERROR;
    }
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------
 *
 * Tls_DigestUpdate --
 *
 *	Update a hash function
 *
 * Returns:
 *	1 if successful or 0 for failure
 *
 * Side effects:
 *	Adds buf to hash function
 *
 *-------------------------------------------------------------------
 */
int Tls_DigestUpdate(DigestState *statePtr, char *buf, size_t read) {
    int res = 0;

    if (statePtr->format & TYPE_MD) {
	res = EVP_DigestUpdate(statePtr->ctx, buf, read);
    } else if (statePtr->format & TYPE_HMAC) {
	res = HMAC_Update(statePtr->hctx, buf, read);
    } else if (statePtr->format & TYPE_CMAC) {
	res = CMAC_Update(statePtr->cctx, buf, read);
    }
    return res;
}

/*
 *-------------------------------------------------------------------
 *
 * Tls_DigestFinialize --
 *
 *	Finalize a hash function and generate a message digest
 *
 * Returns:
 *	TCL_OK if successful or TCL_ERROR for failure with result set
 *	to error message.
 *
 * Side effects:
 *	Sets result to message digest for hash function or an error message.
 *
 *-------------------------------------------------------------------
 */

int Tls_DigestFinialize(Tcl_Interp *interp, DigestState *statePtr) {
    unsigned char md_buf[EVP_MAX_MD_SIZE];
    unsigned int md_len;
    int res = 0;

    /* Finalize hash function and calculate message digest */
    if (statePtr->format & TYPE_MD) {
	res = EVP_DigestFinal_ex(statePtr->ctx, md_buf, &md_len);
    } else if (statePtr->format & TYPE_HMAC) {
	res = HMAC_Final(statePtr->hctx, md_buf, &md_len);
    } else if (statePtr->format & TYPE_CMAC) {
	size_t len;
	res = CMAC_Final(statePtr->cctx, md_buf, &len);
	md_len = (unsigned int) len;
    }
    if (!res) {
	Tcl_AppendResult(interp, "Finalize digest failed: ", REASON(), NULL);
	return TCL_ERROR;
    }

    /* Return message digest as either a binary or hex string */
    if (statePtr->format & BIN_FORMAT) {
	Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(md_buf, md_len));

    } else {
	Tcl_Obj *resultObj = Tcl_NewObj();
	unsigned char *ptr = Tcl_SetByteArrayLength(resultObj, md_len*2);

	for (unsigned int i = 0; i < md_len; i++) {
	    *ptr++ = hex[(md_buf[i] >> 4) & 0x0F];
	    *ptr++ = hex[md_buf[i] & 0x0F];
	}
	Tcl_SetObjResult(interp, resultObj);
    }
    return TCL_OK;
}

/*******************************************************************/

/*
 *-------------------------------------------------------------------
 *
 * Tls_DigestFile --
 *
 *	Return message digest for file using user specified hash function.
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Result is message digest or error message
 *
 *-------------------------------------------------------------------
 */
int Tls_DigestFile(Tcl_Interp *interp, Tcl_Obj *filename, const EVP_MD *md,
	const EVP_CIPHER *cipher, int format, Tcl_Obj *keyObj) {
    DigestState *statePtr;
    Tcl_Channel chan = NULL;
    unsigned char buf[BUFFER_SIZE];
    int res = TCL_OK, len;

    /* Open file channel */
    chan = Tcl_FSOpenFileChannel(interp, filename, "rb", 0444);
    if (chan == (Tcl_Channel) NULL) {
	return TCL_ERROR;
    }

    /* Configure channel */
    if ((res = Tcl_SetChannelOption(interp, chan, "-translation", "binary")) == TCL_ERROR) {
	goto done;
    }
    Tcl_SetChannelBufferSize(chan, BUFFER_SIZE);

    /* Create state data struct */
    if ((statePtr = Tls_DigestNew(interp, format)) == NULL) {
	res = TCL_ERROR;
	goto done;
    }

    /* Initialize hash function */
    if ((res = Tls_DigestInit(interp, statePtr, md, cipher, keyObj)) != TCL_OK) {
	goto done;
    }

    /* Read file data and update hash function */
    while (!Tcl_Eof(chan)) {
	len = Tcl_ReadRaw(chan, (char *) buf, BUFFER_SIZE);
	if (len > 0) {
	    if (!Tls_DigestUpdate(statePtr, &buf[0], (size_t) len)) {
		Tcl_AppendResult(interp, "Update digest failed: ", REASON(), NULL);
		res = TCL_ERROR;
		goto done;
	    }
	}
    }

    /* Finalize hash function and calculate message digest */
    res = Tls_DigestFinialize(interp, statePtr);

done:
    /* Close channel */
    if (Tcl_Close(interp, chan) == TCL_ERROR) {
	res = TCL_ERROR;
    }

    /* Clean-up */
    Tls_DigestFree(statePtr);
    return res;
}

/*******************************************************************/

/*
 *-------------------------------------------------------------------
 *
 * DigestBlockModeProc --
 *
 *	This function is invoked by the generic IO level
 *       to set blocking and nonblocking modes.
 *
 * Returns:
 *	0 if successful or POSIX error code if failed.
 *
 * Side effects:
 *	Sets the device into blocking or nonblocking mode.
 *	Can call Tcl_SetChannelError.
 *
 *-------------------------------------------------------------------
 */
static int DigestBlockModeProc(ClientData clientData, int mode) {
    DigestState *statePtr = (DigestState *) clientData;

    if (mode == TCL_MODE_NONBLOCKING) {
	statePtr->flags |= TLS_TCL_ASYNC;
    } else {
	statePtr->flags &= ~(TLS_TCL_ASYNC);
    }
    return 0;
}

/*
 *-------------------------------------------------------------------
 *
 * DigestCloseProc --
 *
 *	This function is invoked by the generic IO level to perform
 *	channel-type-specific cleanup when channel is closed. All
 *	queued output is flushed prior to calling this function.
 *
 * Returns:
 *	0 if successful or POSIX error code if failed.
 *
 * Side effects:
 *	Writes digest to output and closes the channel. Stores error
 *	messages in interp result using Tcl_GetChannelErrorInterp.
 *
 *-------------------------------------------------------------------
 */
int DigestCloseProc(ClientData clientData, Tcl_Interp *interp) {
    DigestState *statePtr = (DigestState *) clientData;

    /* Cancel active timer, if any */
    if (statePtr->timer != (Tcl_TimerToken) NULL) {
	Tcl_DeleteTimerHandler(statePtr->timer);
	statePtr->timer = (Tcl_TimerToken) NULL;
    }

    /* Clean-up */
    Tls_DigestFree(statePtr);
    return 0;
}

/*
 * Same as DigestCloseProc but with individual read and write close control
 */
static int DigestClose2Proc(ClientData instanceData, Tcl_Interp *interp, int flags) {

    if ((flags & (TCL_CLOSE_READ | TCL_CLOSE_WRITE)) == 0) {
	return DigestCloseProc(instanceData, interp);
    }
    return EINVAL;
}

/*
 *----------------------------------------------------------------------
 *
 * DigestInputProc --
 *
 *	Called by the generic IO system to read data from transform and
 *	place in buf.
 *
 * Returns:
 *	Total bytes read or -1 for an error along with a POSIX error
 *	code in errorCodePtr. Use EAGAIN for nonblocking and no data.
 *
 * Side effects:
 *	Read data from transform and write to buf
 *
 *----------------------------------------------------------------------
 */
int DigestInputProc(ClientData clientData, char *buf, int toRead, int *errorCodePtr) {
    DigestState *statePtr = (DigestState *) clientData;
    Tcl_Channel parent;
    int read, res = 0;
    *errorCodePtr = 0;

    /* Abort if nothing to process */
    if (toRead <= 0 || statePtr->self == (Tcl_Channel) NULL) {
	return 0;
    }

    /* Get bytes from underlying channel */
    parent = Tcl_GetStackedChannel(statePtr->self);
    read = Tcl_ReadRaw(parent, buf, toRead);

    /* Update hash function */
    if (read > 0) {
	if (!Tls_DigestUpdate(statePtr, buf, (size_t) read)) {
	    Tcl_SetChannelError(statePtr->self, Tcl_ObjPrintf("Digest update failed: %s", REASON()));
	    *errorCodePtr = EINVAL;
	    return -1;
	}
	/* This is correct */
	read = -1;
	*errorCodePtr = EAGAIN;
	    
    } else if (read < 0) {
	/* Error */
	*errorCodePtr = Tcl_GetErrno();

    } else if (!(statePtr->flags & CHAN_EOF)) {
	/* EOF */
	unsigned char md_buf[EVP_MAX_MD_SIZE];
	unsigned int md_len = 0;

	/* Finalize hash function and calculate message digest */
	if (statePtr->format & TYPE_MD) {
	    res = EVP_DigestFinal_ex(statePtr->ctx, md_buf, &md_len);
	} else if (statePtr->format & TYPE_HMAC) {
	    res = HMAC_Final(statePtr->hctx, md_buf, &md_len);
	} else if (statePtr->format & TYPE_CMAC) {
	    size_t len;
	    res = CMAC_Final(statePtr->cctx, md_buf, &len);
	    md_len = (unsigned int) len;
	}
	if (!res) {
	    Tcl_SetChannelError(statePtr->self, Tcl_ObjPrintf("Digest finalize failed: %s", REASON()));
	    *errorCodePtr = EINVAL;

	/* Write message digest to output channel as byte array or hex string */
	} else if (md_len > 0) {
	    if ((statePtr->format & BIN_FORMAT) && toRead >= (int) md_len) {
		read = md_len;
		memcpy(buf, md_buf, read);

	    } else if((statePtr->format & HEX_FORMAT) && toRead >= (int) (md_len*2)) {
		unsigned char hex_buf[EVP_MAX_MD_SIZE*2];
		unsigned char *ptr = hex_buf;

		for (unsigned int i = 0; i < md_len; i++) {
		    *ptr++ = hex[(md_buf[i] >> 4) & 0x0F];
		    *ptr++ = hex[md_buf[i] & 0x0F];
		}
		read = md_len*2;
		memcpy(buf, hex_buf, read);
	    }
	}
	statePtr->flags |= CHAN_EOF;
    }
    return read;
}

/*
 *----------------------------------------------------------------------
 *
 * DigestOutputProc --
 *
 *	Called by the generic IO system to write data in buf to transform.
 *
 * Returns:
 *	Total bytes written or -1 for an error along with a POSIX error
 *	code in errorCodePtr. Use EAGAIN for nonblocking and can't write data.
 *
 * Side effects:
 *	Get data from buf and update digest
 *
 *----------------------------------------------------------------------
 */
 int DigestOutputProc(ClientData clientData, const char *buf, int toWrite, int *errorCodePtr) {
    DigestState *statePtr = (DigestState *) clientData;
    *errorCodePtr = 0;

    /* Abort if nothing to process */
    if (toWrite <= 0 || statePtr->self == (Tcl_Channel) NULL) {
	return 0;
    }

    /* Update hash function */
    if (toWrite > 0 && !Tls_DigestUpdate(statePtr, buf, (size_t) toWrite)) {
	Tcl_SetChannelError(statePtr->self, Tcl_ObjPrintf("Digest update failed: %s", REASON()));
	*errorCodePtr = EINVAL;
	return -1;
    }
    return toWrite;
}

/*
 *----------------------------------------------------------------------
 *
 * DigestSetOptionProc --
 *
 *	Called by the generic IO system to set channel option name to value.
 *
 * Returns:
 *	TCL_OK if successful or TCL_ERROR if failed along with an error
 *	message in interp and Tcl_SetErrno.
 *
 * Side effects:
 *	Updates channel option to new value.
 *
 *----------------------------------------------------------------------
 */
static int DigestSetOptionProc(ClientData clientData, Tcl_Interp *interp, const char *optionName,
	const char *optionValue) {
    DigestState *statePtr = (DigestState *) clientData;
    Tcl_Channel parent;
    Tcl_DriverSetOptionProc *setOptionProc;

    /* Abort if no channel */
    if (statePtr->self == (Tcl_Channel) NULL) {
	return TCL_ERROR;
    }

    /* Delegate options downstream */
    parent = Tcl_GetStackedChannel(statePtr->self);
    setOptionProc = Tcl_ChannelSetOptionProc(Tcl_GetChannelType(parent));
    if (setOptionProc != NULL) {
	return (*setOptionProc)(Tcl_GetChannelInstanceData(parent), interp, optionName, optionValue);
    } else {
	Tcl_SetErrno(EINVAL);
	return Tcl_BadChannelOption(interp, optionName, NULL);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * DigestGetOptionProc --
 *
 *	Called by the generic IO system to get channel option name's value.
 *
 * Returns:
 *	TCL_OK if successful or TCL_ERROR if failed along with an error
 *	message in interp and Tcl_SetErrno.
 *
 * Side effects:
 *	Sets result to option's value
 *
 *----------------------------------------------------------------------
 */
static int DigestGetOptionProc(ClientData clientData, Tcl_Interp *interp, const char *optionName,
	Tcl_DString *optionValue) {
    DigestState *statePtr = (DigestState *) clientData;
    Tcl_Channel parent;
    Tcl_DriverGetOptionProc *getOptionProc;

    /* Abort if no channel */
    if (statePtr->self == (Tcl_Channel) NULL) {
	return TCL_ERROR;
    }

    /* Delegate options downstream */
    parent = Tcl_GetStackedChannel(statePtr->self);
    getOptionProc = Tcl_ChannelGetOptionProc(Tcl_GetChannelType(parent));
    if (getOptionProc != NULL) {
	return (*getOptionProc)(Tcl_GetChannelInstanceData(parent), interp, optionName, optionValue);
    } else if (optionName == (char*) NULL) {
	/* Request is query for all options, this is ok. */
	return TCL_OK;
    } else {
	Tcl_SetErrno(EINVAL);
	return Tcl_BadChannelOption(interp, optionName, NULL);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * DigestTimerHandler --
 *
 *	Called by the notifier via timer to flush out pending input data.
 *
 * Returns:
 *	Nothing
 *
 * Side effects:
 *	May call Tcl_NotifyChannel
 *
 *----------------------------------------------------------------------
 */
static void DigestTimerHandler(ClientData clientData) {
    DigestState *statePtr = (DigestState *) clientData;

    /* Abort if no channel */
    if (statePtr->self == (Tcl_Channel) NULL) {
	return;
    }

    /* Clear timer token */
    statePtr->timer = (Tcl_TimerToken) NULL;

    /* Fire event if there is pending data, skip otherwise */
    if ((statePtr->watchMask & TCL_READABLE) && (Tcl_InputBuffered(statePtr->self) > 0)) {
	Tcl_NotifyChannel(statePtr->self, TCL_READABLE);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * DigestWatchProc --
 *
 *	Initialize the notifier to watch for events from this channel.
 *
 * Returns:
 *	Nothing (can't return error messages)
 *
 * Side effects:
 *	Configure notifier so future events on the channel will be seen by Tcl.
 *
 *----------------------------------------------------------------------
 */
#define READ_DELAY	5
void DigestWatchProc(ClientData clientData, int mask) {
    DigestState *statePtr = (DigestState *) clientData;
    Tcl_Channel parent;
    Tcl_DriverWatchProc *watchProc;

    /* Abort if no channel */
    if (statePtr->self == (Tcl_Channel) NULL) {
	return;
    }

    /* Store OR-ed combination of TCL_READABLE, TCL_WRITABLE and TCL_EXCEPTION */
    statePtr->watchMask = mask;

    /* Propagate mask info to parent channel */
    parent = Tcl_GetStackedChannel(statePtr->self);
    watchProc = Tcl_ChannelWatchProc(Tcl_GetChannelType(parent));
    watchProc(Tcl_GetChannelInstanceData(parent), mask);

    /* Remove pending timer */
    if (statePtr->timer != (Tcl_TimerToken) NULL) {
	Tcl_DeleteTimerHandler(statePtr->timer);
	statePtr->timer = (Tcl_TimerToken) NULL;
    }

    /* If there is data pending, set new timer to call Tcl_NotifyChannel */
    if ((mask & TCL_READABLE) && (Tcl_InputBuffered(statePtr->self) > 0)) {
	statePtr->timer = Tcl_CreateTimerHandler(READ_DELAY, DigestTimerHandler, (ClientData) statePtr);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * DigestGetHandleProc --
 *
 *	Called from Tcl_GetChannelHandle to retrieve OS specific file handle
 *	from inside this channel. Not used for transformations?
 *
 * Returns:
 *	TCL_OK for success or TCL_ERROR for error or if not supported. If
 *	direction is TCL_READABLE, sets handlePtr to the handle used for
 *	input, or if TCL_WRITABLE sets to the handle used for output.
 *
 * Side effects:
 *	None
 *
 *----------------------------------------------------------------------
 */
int DigestGetHandleProc(ClientData clientData, int direction, ClientData *handlePtr) {
    DigestState *statePtr = (DigestState *) clientData;
    Tcl_Channel parent;

    /* Abort if no channel */
    if (statePtr->self == (Tcl_Channel) NULL) {
	return TCL_ERROR;
    }

    parent = Tcl_GetStackedChannel(statePtr->self);
    return Tcl_GetChannelHandle(parent, direction, handlePtr);
}

/*
 *----------------------------------------------------------------------
 *
 * DigestNotifyProc --
 *
 *	Called by Tcl to inform us of activity on the underlying channel.
 *
 * Returns:
 *	Unchanged interestMask which is an OR-ed combination of TCL_READABLE or TCL_WRITABLE
 *
 * Side effects:
 *	Cancels any pending timer.
 *
 *----------------------------------------------------------------------
 */
int DigestNotifyProc(ClientData clientData, int interestMask) {
    DigestState *statePtr = (DigestState *) clientData;

    /* Skip timer event as redundant */
    if (statePtr->timer != (Tcl_TimerToken) NULL) {
	Tcl_DeleteTimerHandler(statePtr->timer);
	statePtr->timer = (Tcl_TimerToken) NULL;
    }
    return interestMask;
}

/*
 *
 * Channel type structure definition for digest transformations.
 *
 */
static const Tcl_ChannelType digestChannelType = {
    "digest",			/* Type name */
    TCL_CHANNEL_VERSION_5,	/* v5 channel */
    DigestCloseProc,		/* Close proc */
    DigestInputProc,		/* Input proc */
    DigestOutputProc,		/* Output proc */
    NULL,			/* Seek proc */
    DigestSetOptionProc,	/* Set option proc */
    DigestGetOptionProc,	/* Get option proc */
    DigestWatchProc,		/* Initialize notifier */
    DigestGetHandleProc,	/* Get OS handles out of channel */
    DigestClose2Proc,		/* close2proc */
    DigestBlockModeProc,	/* Set blocking/nonblocking mode*/
    NULL,			/* Flush proc */
    DigestNotifyProc,		/* Handling of events bubbling up */
    NULL,			/* Wide seek proc */
    NULL,			/* Thread action */
    NULL			/* Truncate */
};

/*
 *----------------------------------------------------------------------
 *
 * Tls_DigestChannel --
 *
 *	Create a stacked channel for a message digest transformation.
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Adds transform to channel and sets result to channel id or error message.
 *
 *----------------------------------------------------------------------
 */
static int
Tls_DigestChannel(Tcl_Interp *interp, const char *channel, const EVP_MD *md,
	const EVP_CIPHER *cipher, int format, Tcl_Obj *keyObj) {
    int mode; /* OR-ed combination of TCL_READABLE and TCL_WRITABLE */
    Tcl_Channel chan;
    DigestState *statePtr;

    /* Validate args */
    if (channel == (const char *) NULL) {
	return TCL_ERROR;
    }

    /* Get channel Id */
    chan = Tcl_GetChannel(interp, channel, &mode);
    if (chan == (Tcl_Channel) NULL) {
	return TCL_ERROR;
    }

    /* Make sure to operate on the topmost channel */
    chan = Tcl_GetTopChannel(chan);

    /* Create state data struct */
    if ((statePtr = Tls_DigestNew(interp, format)) == NULL) {
	Tcl_AppendResult(interp, "Initialize digest error: memory allocation failure", (char *) NULL);
	return TCL_ERROR;
    }
    statePtr->self = chan;
    statePtr->mode = mode;

    /* Initialize hash function */
    if (Tls_DigestInit(interp, statePtr, md, cipher, keyObj) != TCL_OK) {
	return TCL_ERROR;
    }

    /* Configure channel */
    Tcl_SetChannelOption(interp, chan, "-translation", "binary");
    if (Tcl_GetChannelBufferSize(chan) < EVP_MAX_MD_SIZE * 2) {
	Tcl_SetChannelBufferSize(chan, EVP_MAX_MD_SIZE * 2);
    }

    /* Stack channel */
    statePtr->self = Tcl_StackChannel(interp, &digestChannelType, (ClientData) statePtr, mode, chan);
    if (statePtr->self == (Tcl_Channel) NULL) {
	Tls_DigestFree(statePtr);
	return TCL_ERROR;
    }

    /* Set result to channel Id */
    Tcl_SetResult(interp, (char *) Tcl_GetChannelName(chan), TCL_VOLATILE);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * Unstack Channel --
 *
 *	This function removes the stacked channel from the top of the
 *	channel stack if it is a digest channel.
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Removes transform from channel or sets result to error message.
 *
 *----------------------------------------------------------------------
 */
static int
UnstackObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Channel chan;
    int mode; /* OR-ed combination of TCL_READABLE and TCL_WRITABLE  */

    /* Validate arg count */
    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channel");
	return TCL_ERROR;
    }

    /* Get channel */
    chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], NULL), &mode);
    if (chan == (Tcl_Channel) NULL) {
	return TCL_ERROR;
    }

    /* Make sure to operate on the topmost channel */
    chan = Tcl_GetTopChannel(chan);

    /* Check if digest channel */
    if (Tcl_GetChannelType(chan) != &digestChannelType) {
	Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan),
	    "\": not a digest channel", NULL);
	Tcl_SetErrorCode(interp, "TLS", "UNSTACK", "CHANNEL", "INVALID", (char *) NULL);
	return TCL_ERROR;
    }

    /* Pop transform from channel */
    return Tcl_UnstackChannel(interp, chan);
    	clientData = clientData;
}

/*******************************************************************/

static const char *instance_fns [] = { "finalize", "update", NULL };

/*
 *-------------------------------------------------------------------
 *
 * InstanceObjCmd --
 *
 *	Handler for digest command instances. Used to add data to hash
 *	function or retrieve message digest.
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Adds data to hash or returns message digest
 *
 *-------------------------------------------------------------------
 */
int InstanceObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    DigestState *statePtr = (DigestState *) clientData;
    int fn, len = 0;
    char *buf = NULL;

    /* Validate arg count */
    if (objc < 2 || objc > 3) {
	Tcl_WrongNumArgs(interp, 1, objv, "function ?data?");
	return TCL_ERROR;
    }

    /* Get function */
    if (Tcl_GetIndexFromObj(interp, objv[1], instance_fns, "function", 0, &fn) != TCL_OK) {
	return TCL_ERROR;
    }

    /* Do function */
    if (fn) {
	/* Get data or return error if none */
	if (objc == 3) {
	    buf = Tcl_GetByteArrayFromObj(objv[2], &len);
	} else {
	    Tcl_WrongNumArgs(interp, 1, objv, "update data");
	    return TCL_ERROR;
	}

	/* Update hash function */
	if (!Tls_DigestUpdate(statePtr, buf, (size_t) len)) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf("Digest update failed: %s", REASON()));
	    return TCL_ERROR;
	}

    } else {
	/* Finalize hash function and calculate message digest */
	if (Tls_DigestFinialize(interp, statePtr) != TCL_OK) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf("Digest finalize failed: %s", REASON()));
	    return TCL_ERROR;
	}

	Tcl_DeleteCommandFromToken(interp, statePtr->token);
    }
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------
 *
 * InstanceDelCallback --
 *
 *	 Callback to clean-up when digest instance command is deleted.
 *
 * Returns:
 *	Nothing
 *
 * Side effects:
 *	Destroys struct
 *
 *-------------------------------------------------------------------
 */
void InstanceDelCallback(ClientData clientData) {
    DigestState *statePtr = (DigestState *) clientData;

    /* Clean-up */
    Tls_DigestFree(statePtr);
}

/*
 *-------------------------------------------------------------------
 *
 * Tls_DigestInstance --
 *
 *	 Create command to allow user to add data to hash function.
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Creates command or error message
 *
 *-------------------------------------------------------------------
 */
int Tls_DigestInstance(Tcl_Interp *interp, Tcl_Obj *cmdObj, const EVP_MD *md,
	const EVP_CIPHER *cipher, int format, Tcl_Obj *keyObj) {
    DigestState *statePtr;
    char *cmdName = Tcl_GetStringFromObj(cmdObj, NULL);

    /* Create state data struct */
    if ((statePtr = Tls_DigestNew(interp, format)) == NULL) {
	Tcl_AppendResult(interp, "Initialize digest error: memory allocation failure", (char *) NULL);
	return TCL_ERROR;
    }

    /* Initialize hash function */
    if (Tls_DigestInit(interp, statePtr, md, cipher, keyObj) != TCL_OK) {
	return TCL_ERROR;
    }

    /* Create instance command */
    statePtr->token = Tcl_CreateObjCommand(interp, cmdName, InstanceObjCmd,
	(ClientData) statePtr, InstanceDelCallback);

    /* Return command name */
    Tcl_SetObjResult(interp, cmdObj);
    return TCL_OK;
}


/*******************************************************************/

/*
 *-------------------------------------------------------------------
 *
 * Tls_DigestData --
 *
 *	Return message digest for data using user specified hash function.
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Sets result to message digest or error message
 *
 *-------------------------------------------------------------------
 */
int
Tls_DigestData(Tcl_Interp *interp, int objc, Tcl_Obj *const objv[],
	const EVP_MD *md, const EVP_CIPHER *cipher, int format, Tcl_Obj *keyObj) {
    char *data;
    int len, res;
    unsigned int md_len;
    unsigned char md_buf[EVP_MAX_MD_SIZE];

    /* Validate arg count */
    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "data");
	return TCL_ERROR;
    }

    /* Get data */
    data = Tcl_GetByteArrayFromObj(objv[1], &len);
    if (data == NULL || len == 0) {
	Tcl_SetResult(interp, "No data", NULL);
	return TCL_ERROR;
    }

    /* Calculate digest based on hash function */
    if (format & TYPE_MD) {
	res = EVP_Digest(data, (size_t) len, md_buf, &md_len, md, NULL);

    } else if (format & TYPE_HMAC) {
	unsigned char *key, *hmac = NULL;
	int key_len;

	key = Tcl_GetByteArrayFromObj(keyObj, &key_len);
	hmac = HMAC(md, (const void *) key, key_len, (const unsigned char *) data,
	    (size_t) len, md_buf, &md_len);
	res = (hmac != NULL);

    } else if (format & TYPE_CMAC) {
	DigestState *statePtr;

	if ((statePtr = Tls_DigestNew(interp, format)) == NULL) {
	    Tcl_AppendResult(interp, "Memory allocation error", (char *) NULL);
	    return TCL_ERROR;
	}
	if (Tls_DigestInit(interp, statePtr, md, cipher, keyObj) != TCL_OK ||
	    Tls_DigestUpdate(statePtr, data, (size_t) len) == 0 ||
	    Tls_DigestFinialize(interp, statePtr) != TCL_OK) {
	    Tls_DigestFree(statePtr);
	    return TCL_ERROR;
	}
	Tls_DigestFree(statePtr);
	return TCL_OK;
    }

    /* Output digest to result per format (bin or hex) */
    if (res) {
	if (format & BIN_FORMAT) {
	    Tcl_SetObjResult(interp, Tcl_NewByteArrayObj(md_buf, md_len));

	} else {
	    Tcl_Obj *resultObj = Tcl_NewObj();
	    unsigned char *ptr = Tcl_SetByteArrayLength(resultObj, md_len*2);

	    for (unsigned int i = 0; i < md_len; i++) {
		*ptr++ = hex[(md_buf[i] >> 4) & 0x0F];
		*ptr++ = hex[md_buf[i] & 0x0F];
	    }
	Tcl_SetObjResult(interp, resultObj);
	}

    } else {
	Tcl_AppendResult(interp, "Hash calculation error:", REASON(), (char *) NULL);
	return TCL_ERROR;
    }
    return TCL_OK;
}


/*******************************************************************/

/*
 *-------------------------------------------------------------------
 *
 * DigestObjCmd --
 *
 *	Return message digest using user specified hash function.
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Sets result to message digest or error message
 *
 *-------------------------------------------------------------------
 */
static int DigestMain(int type, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    int idx, len, format = HEX_FORMAT, res = TCL_OK, flags = 0;
    const char *digestName, *channel = NULL;
    Tcl_Obj *cmdObj = NULL, *dataObj = NULL, *fileObj = NULL, *keyObj = NULL;
    unsigned char *cipherName = NULL;
    const EVP_MD *md;
    const EVP_CIPHER *cipher = NULL;

    /* Clear interp result */
    Tcl_ResetResult(interp);

    /* Validate arg count */
    if (objc < 3 || objc > 9) {
	Tcl_WrongNumArgs(interp, 1, objv, "digest ?-bin|-hex? ?-cipher name? ?-key hmac_key? [-channel chan | -command cmdName | -file filename | ?-data? data]");
	return TCL_ERROR;
    }

    /* Get digest */
    digestName = Tcl_GetStringFromObj(objv[1], &len);
    if (digestName == NULL || (md = EVP_get_digestbyname(digestName)) == NULL) {
	Tcl_AppendResult(interp, "Invalid digest \"", digestName, "\"", NULL);
	return TCL_ERROR;
    }

    /* Optimal case for blob of data */
    if (objc == 3 && type == TYPE_MD) {
	return Tls_DigestData(interp, --objc, ++objv, md, NULL, HEX_FORMAT | TYPE_MD, NULL);
    }

    /* Get options */
    for (idx = 2; idx < objc-1; idx++) {
	char *opt = Tcl_GetStringFromObj(objv[idx], NULL);

	if (opt[0] != '-') {
	    break;
	}

	OPTFLAG("-bin", format, BIN_FORMAT);
	OPTFLAG("-binary", format, BIN_FORMAT);
	OPTFLAG("-hex", format, HEX_FORMAT);
	OPTFLAG("-hexadecimal", format, HEX_FORMAT);
	OPTSTR("-chan", channel);
	OPTSTR("-channel", channel);
	OPTSTR("-cipher", cipherName);
	OPTOBJ("-command", cmdObj);
	OPTOBJ("-data", dataObj);
	OPTOBJ("-file", fileObj);
	OPTOBJ("-filename", fileObj);
	OPTOBJ("-key", keyObj);

	OPTBAD("option", "-bin, -channel, -cipher, -command, -data, -file, -filename, -hex, or -key");
	return TCL_ERROR;
    }

    /* If no option for last arg, then its the data */
    if (idx < objc) {
	dataObj = objv[idx];
    }

    /* Get cipher */
    if (cipherName != NULL) {
	cipher = EVP_get_cipherbyname(cipherName);
	type = TYPE_CMAC;
	if (cipher == NULL) {
	    Tcl_AppendResult(interp, "Invalid cipher \"", cipherName, "\"", NULL);
	    return TCL_ERROR;
	}

    } else if (type == TYPE_CMAC) {
	Tcl_AppendResult(interp, "No cipher specified", NULL);
	return TCL_ERROR;
    }

    /* Get key */
    if (keyObj != NULL) {
	if (type == TYPE_MD) {
	    type = TYPE_HMAC;
	}
    } else if (type != TYPE_MD) {
	Tcl_AppendResult(interp, "No key specified", NULL);
	return TCL_ERROR;
    }

    /* Calc digest on file, stacked channel, using instance command, or data blob */
    if (fileObj != NULL) {
	res = Tls_DigestFile(interp, fileObj, md, cipher, format | type, keyObj);
    } else if (channel != NULL) {
	res = Tls_DigestChannel(interp, channel, md, cipher, format | type, keyObj);
    } else if (cmdObj != NULL) {
	res = Tls_DigestInstance(interp, cmdObj, md, cipher, format | type, keyObj);
    } else if (dataObj != NULL) {
	Tcl_Obj *objs[2];
	objs[0] = NULL;
	objs[1] = dataObj;
	res = Tls_DigestData(interp, 2, objs, md, cipher, format | type, keyObj);
    }
    return res;
}

/*
 *-------------------------------------------------------------------
 *
 * Message Digest and Message Authentication Code Commands --
 *
 *	Return Message Digest (MD) or Message Authentication Code (MAC).
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Sets result to message digest or error message
 *
 *-------------------------------------------------------------------
 */
static int DigestObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    return DigestMain(TYPE_MD, interp, objc, objv);
}

static int CMACObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    return DigestMain(TYPE_CMAC, interp, objc, objv);
}

static int HMACObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    return DigestMain(TYPE_HMAC, interp, objc, objv);
}

/*
 *-------------------------------------------------------------------
 *
 * Message Digest Convenience Commands --
 *
 *	Convenience commands for select message digests.
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Sets result to message digest or error message
 *
 *-------------------------------------------------------------------
 */
int DigestMD4Cmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    return Tls_DigestData(interp, objc, objv, EVP_md4(), NULL, HEX_FORMAT | TYPE_MD, NULL);
}

int DigestMD5Cmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    return Tls_DigestData(interp, objc, objv, EVP_md5(), NULL, HEX_FORMAT | TYPE_MD, NULL);
}

int DigestSHA1Cmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    return Tls_DigestData(interp, objc, objv, EVP_sha1(), NULL, HEX_FORMAT | TYPE_MD, NULL);
}

int DigestSHA256Cmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    return Tls_DigestData(interp, objc, objv, EVP_sha256(), NULL, HEX_FORMAT | TYPE_MD, NULL);
}

int DigestSHA512Cmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    return Tls_DigestData(interp, objc, objv, EVP_sha512(), NULL, HEX_FORMAT | TYPE_MD, NULL);
}

/*
 *-------------------------------------------------------------------
 *
 * Tls_DigestCommands --
 *
 *	Create digest commands
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Creates commands
 *
 *-------------------------------------------------------------------
 */
int Tls_DigestCommands(Tcl_Interp *interp) {
    Tcl_CreateObjCommand(interp, "tls::digest", DigestObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::cmac", CMACObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::hmac", HMACObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::md4", DigestMD4Cmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::md5", DigestMD5Cmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::sha1", DigestSHA1Cmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::sha256", DigestSHA256Cmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::sha512", DigestSHA512Cmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::unstack", UnstackObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    return TCL_OK;
}

		dprintf("Flushing the lower layers failed, this will probably terminate this session");
	    }
	}

	rc = SSL_get_error(statePtr->ssl, err);

	dprintf("Got error: %i (rc = %i)", err, rc);
	dprintf("Got error: %s", REASON());

	bioShouldRetry = 0;
	if (err <= 0) {
	    if (rc == SSL_ERROR_WANT_CONNECT || rc == SSL_ERROR_WANT_ACCEPT || rc == SSL_ERROR_WANT_READ || rc == SSL_ERROR_WANT_WRITE) {
		bioShouldRetry = 1;
	    } else if (BIO_should_retry(statePtr->bio)) {
		bioShouldRetry = 1;

	    }

	    statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
	    return(-1);

	case SSL_ERROR_SSL:
	    dprintf("Got permanent fatal SSL error, aborting immediately");
	    Tls_Error(statePtr, (char *)REASON());
	    statePtr->flags |= TLS_TCL_HANDSHAKE_FAILED;
	    *errorCodePtr = ECONNABORTED;
	    return(-1);

	case SSL_ERROR_WANT_CONNECT:
	case SSL_ERROR_WANT_ACCEPT:
	case SSL_ERROR_WANT_X509_LOOKUP:

/*
 * Information Commands Module
 *
 * Provides commands that return info related to the OpenSSL config and data.
 *
 * Copyright (C) 2023 Brian O'Hagan
 *
 */

#include "tlsInt.h"
#include "tclOpts.h"
#include <openssl/crypto.h>
#include <openssl/ssl.h>
#include <openssl/safestack.h>

/*
 * Valid SSL and TLS Protocol Versions
 */
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
};


/*
 *-------------------------------------------------------------------
 *
 * NamesCallback --
 *
 *	Callback to add algorithm or method names to a TCL list object.
 *
 * Results:
 *	Append name to TCL list object.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------
 */
void NamesCallback(const OBJ_NAME *obj, void *arg) {
    Tcl_Obj *objPtr = (Tcl_Obj *) arg;

    /* Fields: (int) type and alias, (const char*) name and data */
    if (1 || !obj->alias) {
	/* Filter out signed digests (a.k.a signature algorithms) */
	if (strstr(obj->name, "rsa") == NULL && strstr(obj->name, "RSA") == NULL) {
	    Tcl_ListObjAppendElement(NULL, objPtr, Tcl_NewStringObj(obj->name,-1));
	}
    }
}

/*
 *-------------------------------------------------------------------
 *
 * CiphersObjCmd --
 *
 *	This procedure is invoked to process the "tls::ciphers" command
 *	to list available ciphers, based upon protocol selected.
 *
 * Results:
 *	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[]) {
    SSL_CTX *ctx = NULL;
    SSL *ssl = NULL;
    STACK_OF(SSL_CIPHER) *sk = NULL;
    int index, verbose = 0, use_supported = 0;
    int min_version, max_version;

    dprintf("Called");

#if OPENSSL_VERSION_NUMBER < 0x10100000L
    OpenSSL_add_all_ciphers(); /* Make sure they're loaded */
#endif

    /* Clear errors */
    Tcl_ResetResult(interp);
    ERR_clear_error();

    /* Validate arg count */
    if (objc > 4) {
	Tcl_WrongNumArgs(interp, 1, objv, "?protocol? ?verbose? ?supported?");
	return TCL_ERROR;
    }

    /* List all ciphers */
    if (objc == 1) {
	Tcl_Obj *objPtr = Tcl_NewListObj(0, NULL);

	OBJ_NAME_do_all(OBJ_NAME_TYPE_CIPHER_METH, NamesCallback, (void *) objPtr);
	Tcl_SetObjResult(interp, objPtr);
	return TCL_OK;

    }

    /* Get options */
    if (Tcl_GetIndexFromObj(interp, objv[1], protocols, "protocol", 0, &index) != TCL_OK ||
	(objc > 2 && Tcl_GetBooleanFromObj(interp, objv[2], &verbose) != TCL_OK) ||
	(objc > 3 && Tcl_GetBooleanFromObj(interp, objv[3], &use_supported) != TCL_OK)) {
	return TCL_ERROR;
    }

    switch ((enum protocol)index) {
	case TLS_SSL2:
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
	case TLS_SSL3:
#if defined(NO_SSL3) || defined(OPENSSL_NO_SSL3) || defined(OPENSSL_NO_SSL3_METHOD)
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
#else
            min_version = SSL3_VERSION;
            max_version = SSL3_VERSION;
	    break;
#endif
	case TLS_TLS1:
#if defined(NO_TLS1) || defined(OPENSSL_NO_TLS1) || defined(OPENSSL_NO_TLS1_METHOD)
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
#else
            min_version = TLS1_VERSION;
            max_version = TLS1_VERSION;
	    break;
#endif
	case TLS_TLS1_1:
#if defined(NO_TLS1_1) || defined(OPENSSL_NO_TLS1_1) || defined(OPENSSL_NO_TLS1_1_METHOD)
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
#else
            min_version = TLS1_1_VERSION;
            max_version = TLS1_1_VERSION;
	    break;
#endif
	case TLS_TLS1_2:
#if defined(NO_TLS1_2) || defined(OPENSSL_NO_TLS1_2) || defined(OPENSSL_NO_TLS1_2_METHOD)
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
#else
            min_version = TLS1_2_VERSION;
            max_version = TLS1_2_VERSION;
	    break;
#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
            min_version = TLS1_3_VERSION;
            max_version = TLS1_3_VERSION;
	    break;
#endif
	default:
            min_version = SSL3_VERSION;
            max_version = TLS1_3_VERSION;
	    break;
    }

    /* Create context */
    if ((ctx = SSL_CTX_new(TLS_server_method())) == NULL) {
	Tcl_AppendResult(interp, REASON(), NULL);
	return TCL_ERROR;
    }

    /* Set protocol versions */
    if (SSL_CTX_set_min_proto_version(ctx, min_version) == 0 ||
	SSL_CTX_set_max_proto_version(ctx, max_version) == 0) {
	SSL_CTX_free(ctx);
	return TCL_ERROR;
    }

    /* Create SSL context */
    if ((ssl = SSL_new(ctx)) == 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);
	/*sk = SSL_CTX_get_ciphers(ctx);*/
    }

    if (sk != NULL) {
	Tcl_Obj *objPtr = NULL;

	if (!verbose) {
	    char *cp;
	    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 {
	    char buf[BUFSIZ];
	    objPtr = Tcl_NewStringObj("",0);

	    for (int i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
		/* uint32_t id;*/
		const SSL_CIPHER *c = sk_SSL_CIPHER_value(sk, i);
		if (c == NULL) continue;

		/* Get OpenSSL-specific ID, not IANA ID */
		/*id = SSL_CIPHER_get_id(c);*/

		/* TLS protocol two-byte id */
		/*id = SSL_CIPHER_get_protocol_id(c);*/

		/* Standard RFC name of cipher or (NONE) */
		/*const char *nm = SSL_CIPHER_standard_name(c);
		if (nm == NULL) {nm = "UNKNOWN";}*/

		/* textual description of the cipher */
		if (SSL_CIPHER_description(c, buf, sizeof(buf)) != NULL) {
		    Tcl_AppendToObj(objPtr, buf, (Tcl_Size) strlen(buf));
		} else {
		    Tcl_AppendToObj(objPtr, "UNKNOWN\n", 8);
		}
	    }
	}

	/* Clean up */
	if (use_supported) {
	    sk_SSL_CIPHER_free(sk);
	}
	Tcl_SetObjResult(interp, objPtr);
    }

    SSL_free(ssl);
    SSL_CTX_free(ctx);
    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * DigestsObjCmd --
 *
 *	Return a list of all valid hash algorithms or message digests.
 *
 * Results:
 *	A standard Tcl list.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------
 */
int DigestsObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Obj *objPtr;

    dprintf("Called");

#if OPENSSL_VERSION_NUMBER < 0x10100000L
    OpenSSL_add_all_digests(); /* Make sure they're loaded */
#endif

    /* Validate arg count */
    if (objc != 1) {
	Tcl_WrongNumArgs(interp, 1, objv, NULL);
	return TCL_ERROR;
    }

    /* List all digests */
    objPtr = Tcl_NewListObj(0, NULL);
    OBJ_NAME_do_all(OBJ_NAME_TYPE_MD_METH, NamesCallback, (void *) objPtr);
    Tcl_SetObjResult(interp, objPtr);
    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * MacsObjCmd --
 *
 *	Return a list of all valid message authentication codes (MAC).
 *
 * Results:
 *	A standard Tcl list.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------
 */
int MacsObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Obj *objPtr;

    dprintf("Called");

    /* Validate arg count */
    if (objc != 1) {
	Tcl_WrongNumArgs(interp, 1, objv, NULL);
	return TCL_ERROR;
    }

    /* List all MACs */
    objPtr = Tcl_NewListObj(0, NULL);
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("cmac", -1));
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("hmac", -1));
    Tcl_SetObjResult(interp, objPtr);
    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * ProtocolsObjCmd --
 *
 *	Return a list of the available or supported SSL/TLS protocols.
 *
 * Results:
 *	A standard Tcl list.
 *
 * Side effects:
 *	none
 *
 *-------------------------------------------------------------------
 */
static int
ProtocolsObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Obj *objPtr;

    dprintf("Called");

    /* Validate arg count */
    if (objc != 1) {
	Tcl_WrongNumArgs(interp, 1, objv, NULL);
	return TCL_ERROR;
    }

    /* List all MACs */
    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);
    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * VersionObjCmd --
 *
 *	Return a string with the OpenSSL version info.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------
 */
static int
VersionObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Obj *objPtr;

    dprintf("Called");

    /* Validate arg count */
    if (objc != 1) {
	Tcl_WrongNumArgs(interp, 1, objv, NULL);
	return TCL_ERROR;
    }

    objPtr = Tcl_NewStringObj(OPENSSL_VERSION_TEXT, -1);
    Tcl_SetObjResult(interp, objPtr);
    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * Tls_InfoCommands --
 *
 *	Create info commands
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Creates commands
 *
 *-------------------------------------------------------------------
 */
int Tls_InfoCommands(Tcl_Interp *interp) {
    Tcl_CreateObjCommand(interp, "tls::ciphers", CiphersObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::digests", DigestsObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::macs", MacsObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::protocols", ProtocolsObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::version", VersionObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    return TCL_OK;
}

#   endif
#endif

/*
 * Backwards compatibility for size type change
 */
#if TCL_MAJOR_VERSION < 9 && TCL_MINOR_VERSION < 7
#   define Tcl_Size int




#endif

#include <openssl/ssl.h>
#include <openssl/err.h>
#include <openssl/rand.h>
#include <openssl/opensslv.h>

#else
#define dprintf(...) if (0) { fprintf(stderr, __VA_ARGS__); }
#define dprintBuffer(bufferName, bufferLength) /**/
#define dprintFlags(statePtr) /**/
#endif

#define TCLTLS_SSL_ERROR(ssl,err) ((char*)ERR_reason_error_string((unsigned long)SSL_get_error((ssl),(err))))
#define REASON()	ERR_reason_error_string(ERR_get_error())

/* Common list append macros */
#define LAPPEND_BARRAY(interp, obj, text, value, size) {\
    if (text != NULL) Tcl_ListObjAppendElement(interp, obj, Tcl_NewStringObj(text, -1)); \
    Tcl_ListObjAppendElement(interp, obj, Tcl_NewByteArrayObj(value, size)); \
}
#define LAPPEND_STR(interp, obj, text, value, size) {\

Tcl_Obj         *Tls_NewX509Obj(Tcl_Interp *interp, X509 *cert);
Tcl_Obj		*Tls_NewCAObj(Tcl_Interp *interp, const SSL *ssl, int peer);
void            Tls_Error(State *statePtr, char *msg);
void            Tls_Free(char *blockPtr);
void            Tls_Clean(State *statePtr);
int             Tls_WaitForConnect(State *statePtr, int *errorCodePtr, int handshakeFailureIsPermanent);
int             Tls_DigestCommands(Tcl_Interp *interp);
int             Tls_InfoCommands(Tcl_Interp *interp);

BIO             *BIO_new_tcl(State* statePtr, int flags);

#define PTR2INT(x) ((int) ((intptr_t) (x)))

#endif /* _TLSINT_H */

/* Define maximum certificate size. Max PEM size 100kB and DER size is 24kB. */
#define CERT_STR_SIZE 32768


/*
 * Binary string to hex string
 */
int String_to_Hex(unsigned char* input, int ilen, unsigned char *output, int olen) {
    int count = 0;
    unsigned char *iptr = input;
    unsigned char *optr = &output[0];
    const char *hex = "0123456789ABCDEF";

    for (int i = 0; i < ilen && count < olen - 1; i++, count += 2) {

        *optr++ = hex[(*iptr>>4)&0xF];
        *optr++ = hex[(*iptr++)&0xF];
    }
    *optr = 0;
    return count;
}

/*
 * BIO to Buffer
 */
int BIO_to_Buffer(int result, BIO *bio, void *buffer, int size) {

 */
Tcl_Obj *Tls_x509Identifier(ASN1_OCTET_STRING *astring) {
    Tcl_Obj *resultPtr = NULL;
    int len = 0;
    char buffer[1024];

    if (astring != NULL) {
	len = String_to_Hex(ASN1_STRING_get0_data(astring),
	    ASN1_STRING_length(astring), buffer, 1024);
    }
    resultPtr = Tcl_NewStringObj(buffer, len);
    return resultPtr;
}

/*
 * Get Key Usage
 */
Tcl_Obj *Tls_x509KeyUsage(Tcl_Interp *interp, X509 *cert, uint32_t xflags) {

    }

    if (names = X509_get_ext_d2i(cert, nid, NULL, NULL)) {
	for (int i=0; i < sk_GENERAL_NAME_num(names); i++) {
	    const GENERAL_NAME *name = sk_GENERAL_NAME_value(names, i);

	    len = BIO_to_Buffer(name && GENERAL_NAME_print(bio, name), bio, buffer, 1024);
	    LAPPEND_STR(interp, listPtr, NULL, buffer, len);
	}
	sk_GENERAL_NAME_pop_free(names, GENERAL_NAME_free);
    }
    return listPtr;
}

/*

	    if (distpoint->type == 0) {
		/* full-name GENERALIZEDNAME */
		for (int j = 0; j < sk_GENERAL_NAME_num(distpoint->name.fullname); j++) {
		    GENERAL_NAME *gen = sk_GENERAL_NAME_value(distpoint->name.fullname, j);
		    int type;
		    ASN1_STRING *uri = GENERAL_NAME_get0_value(gen, &type);
		    if (type == GEN_URI) {
			LAPPEND_STR(interp, listPtr, NULL, ASN1_STRING_get0_data(uri), ASN1_STRING_length(uri));
		    }
		}
	    } else if (distpoint->type == 1) {
		/* relative-name X509NAME */
		STACK_OF(X509_NAME_ENTRY) *sk_relname = distpoint->name.relativename;
		for (int j = 0; j < sk_X509_NAME_ENTRY_num(sk_relname); j++) {
		    X509_NAME_ENTRY *e = sk_X509_NAME_ENTRY_value(sk_relname, j);
		    ASN1_STRING *d = X509_NAME_ENTRY_get_data(e);
		    LAPPEND_STR(interp, listPtr, NULL, ASN1_STRING_data(d), ASN1_STRING_length(d));
		}
	    }
	}
	CRL_DIST_POINTS_free(crl);
    }
    return listPtr;
}

    if (ads = X509_get_ext_d2i(cert, NID_info_access, NULL, NULL)) {
	for (int i = 0; i < sk_ACCESS_DESCRIPTION_num(ads); i++) {
	    ad = sk_ACCESS_DESCRIPTION_value(ads, i);
	    if (OBJ_obj2nid(ad->method) == NID_ad_ca_issuers && ad->location) {
		if (ad->location->type == GEN_URI) {
		    len = ASN1_STRING_to_UTF8(&buf, ad->location->d.uniformResourceIdentifier);
		    Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj(buf, len));
		    OPENSSL_free(buf);
		    break;
		}
	    }
	}
	/* sk_ACCESS_DESCRIPTION_pop_free(ads, ACCESS_DESCRIPTION_free); */
	AUTHORITY_INFO_ACCESS_free(ads);

	int sig_nid;

	X509_get0_signature(&sig, &sig_alg, cert);
	/* sig_nid = X509_get_signature_nid(cert) */
	sig_nid = OBJ_obj2nid(sig_alg->algorithm);
	LAPPEND_STR(interp, certPtr, "signatureAlgorithm", OBJ_nid2ln(sig_nid), -1);
	len = (sig_nid != NID_undef) ? String_to_Hex(sig->data, sig->length, buffer, BUFSIZ) : 0;
	LAPPEND_STR(interp, certPtr, "signatureValue", buffer, len);
    }

    /* Version of the encoded certificate - RFC 5280 section 4.1.2.1 */
    LAPPEND_LONG(interp, certPtr, "version", X509_get_version(cert)+1);

    /* Unique number assigned by CA to certificate - RFC 5280 section 4.1.2.2 */
    len = BIO_to_Buffer(i2a_ASN1_INTEGER(bio, X509_get0_serialNumber(cert)), bio, buffer, BUFSIZ);
    LAPPEND_STR(interp, certPtr, "serialNumber", buffer, len);

    /* Signature algorithm used by the CA to sign the certificate. Must match
	signatureAlgorithm. RFC 5280 section 4.1.2.3 */
    LAPPEND_STR(interp, certPtr, "signature", OBJ_nid2ln(X509_get_signature_nid(cert)), -1);

    /* Issuer identifies the entity that signed and issued the cert. RFC 5280 section 4.1.2.4 */
    len = BIO_to_Buffer(X509_NAME_print_ex(bio, X509_get_issuer_name(cert), 0, flags), bio, buffer, BUFSIZ);
    LAPPEND_STR(interp, certPtr, "issuer", buffer, len);

    /* Certificate validity period is the interval the CA warrants that it will
	maintain info on the status of the certificate. RFC 5280 section 4.1.2.5 */
    /* Get Validity - Not Before */
    len = BIO_to_Buffer(ASN1_TIME_print(bio, X509_get0_notBefore(cert)), bio, buffer, BUFSIZ);
    LAPPEND_STR(interp, certPtr, "notBefore", buffer, len);

    /* Get Validity - Not After */
    len = BIO_to_Buffer(ASN1_TIME_print(bio, X509_get0_notAfter(cert)), bio, buffer, BUFSIZ);
    LAPPEND_STR(interp, certPtr, "notAfter", buffer, len);

    /* Subject identifies the entity associated with the public key stored in
	the subject public key field. RFC 5280 section 4.1.2.6 */
    len = BIO_to_Buffer(X509_NAME_print_ex(bio, X509_get_subject_name(cert), 0, flags), bio, buffer, BUFSIZ);
    LAPPEND_STR(interp, certPtr, "subject", buffer, len);

    /* SHA1 Digest (Fingerprint) of cert - DER representation */
    if (X509_digest(cert, EVP_sha1(), md, &len)) {
    len = String_to_Hex(md, len, buffer, BUFSIZ);
	LAPPEND_STR(interp, certPtr, "sha1_hash", buffer, len);
    }

    /* SHA256 Digest (Fingerprint) of cert - DER representation */
    if (X509_digest(cert, EVP_sha256(), md, &len)) {
    len = String_to_Hex(md, len, buffer, BUFSIZ);
	LAPPEND_STR(interp, certPtr, "sha256_hash", buffer, len);
    }

    /* Subject Public Key Info specifies the public key and identifies the
	algorithm with which the key is used. RFC 5280 section 4.1.2.7 */
    if (X509_get_signature_info(cert, &mdnid, &pknid, &bits, &xflags)) {
	ASN1_BIT_STRING *key;
	unsigned int n;

	LAPPEND_STR(interp, certPtr, "signingDigest", OBJ_nid2ln(mdnid), -1);
	LAPPEND_STR(interp, certPtr, "publicKeyAlgorithm", OBJ_nid2ln(pknid), -1);
	LAPPEND_INT(interp, certPtr, "bits", bits); /* Effective security bits */

	key = X509_get0_pubkey_bitstr(cert);
	len = String_to_Hex(key->data, key->length, buffer, BUFSIZ);
	LAPPEND_STR(interp, certPtr, "publicKey", buffer, len);

	len = 0;
	if (X509_pubkey_digest(cert, EVP_get_digestbynid(pknid), md, &n)) {
	    len = String_to_Hex(md, (int)n, buffer, BUFSIZ);
	}
	LAPPEND_STR(interp, certPtr, "publicKeyHash", buffer, len);

	/* digest of the DER representation of the certificate */
	len = 0;
	if (X509_digest(cert, EVP_get_digestbynid(mdnid), md, &n)) {
	    len = String_to_Hex(md, (int)n, buffer, BUFSIZ);
	}
	LAPPEND_STR(interp, certPtr, "signatureHash", buffer, len);
    }

    /* Certificate Purpose. Call before checking for extensions. */
    LAPPEND_STR(interp, certPtr, "purpose", Tls_x509Purpose(cert), -1);
    LAPPEND_OBJ(interp, certPtr, "certificatePurpose", Tls_x509Purposes(interp, cert));

    /* Get extensions flags */

	and/or issuer names over time. RFC 5280 section 4.1.2.8 */
    {
	const ASN1_BIT_STRING *iuid, *suid;
        X509_get0_uids(cert, &iuid, &suid);

	Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("issuerUniqueId", -1));
	if (iuid != NULL) {
	    Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewByteArrayObj((char *)iuid->data, iuid->length));
	} else {
	    Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("", -1));
	}

	Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("subjectUniqueId", -1));
	if (suid != NULL) {
	    Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewByteArrayObj((char *)suid->data, suid->length));
	} else {
	    Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("", -1));
	}
    }

    /* X509 v3 Extensions - RFC 5280 section 4.1.2.9 */
    LAPPEND_INT(interp, certPtr, "extCount", X509_get_ext_count(cert));

    /* Subject Information Access - RFC 5280 section 4.2.2.2, NID_sinfo_access */

    /* Certificate Alias. If uses a PKCS#12 structure, alias will reflect the
	friendlyName attribute (RFC 2985). */
    {
	len = 0;
        char *string = X509_alias_get0(cert, &len);
	LAPPEND_STR(interp, certPtr, "alias", string, len);
    }

    /* Certificate and dump all data */
    {
	char certStr[CERT_STR_SIZE];

	/* Get certificate */
	len = BIO_to_Buffer(PEM_write_bio_X509(bio, cert), bio, certStr, CERT_STR_SIZE);
	LAPPEND_STR(interp, certPtr, "certificate", certStr, len);

	/* Get all cert info */
	len = BIO_to_Buffer(X509_print_ex(bio, cert, flags, 0), bio, certStr, CERT_STR_SIZE);
	LAPPEND_STR(interp, certPtr, "all", certStr, len);
    }

    BIO_free(bio);
    return certPtr;
}

# Group,Name,Constraints,Setup,Body,Cleanup,Match,Result,Output,Error Output,Return Codes
command,package require tls,,,,,,,,,
command,,,,,,,,,,
command,# Make sure path includes location of OpenSSL executable,,,,,,,,,
command,"if {[info exists ::env(OPENSSL)]} {set ::env(path) [string cat [file join $::env(OPENSSL) bin] "";"" $::env(path)]}",,,,,,,,,
command,,,,,,,,,,
command,# Constraints,,,,,,,,,
command,set protocols [list ssl2 ssl3 tls1 tls1.1 tls1.2 tls1.3],,,,,,,,,
command,foreach protocol $protocols {::tcltest::testConstraint $protocol 0},,,,,,,,,
command,foreach protocol [::tls::protocols] {::tcltest::testConstraint $protocol 1},,,,,,,,,
command,"::tcltest::testConstraint OpenSSL [string match ""OpenSSL*"" [::tls::version]]",,,,,,,,,
,,,,,,,,,,
command,# Helper functions,,,,,,,,,
command,"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"" $u]}",,,,,,,,,
command,proc exec_get {delim args} {return [split [exec openssl {*}$args] $delim]},,,,,,,,,
command,"proc exec_get_ciphers {} {set list [list];set data [exec openssl list -cipher-algorithms];foreach line [split $data ""\n""] {foreach {cipher null alias} [split [string trim $line]] {lappend list [string tolower $cipher]}};return [lsort -unique $list]}",,,,,,,,,
command,"proc exec_get_digests {} {set list [list];set data [exec openssl dgst -list];foreach line [split $data ""\n""] {foreach digest $line {if {[string match ""-*"" $digest]} {lappend list [string trimleft $digest ""-""]}}};return [lsort $list]}",,,,,,,,,
command,proc exec_get_macs {} {return [list cmac hmac]},,,,,,,,,
command,proc list_tolower {list} {set result [list];foreach element $list {lappend result [string tolower $element]};return $result},,,,,,,,,
command,proc read_chan {md filename args} {set ch [open $filename rb];fconfigure $ch -translation binary;set bsize [fconfigure $ch -buffersize];set new [tls::digest $md {*}$args -chan $ch];while {![eof $new]} {set result [read $new $bsize]};close $new;return $result},,,,,,,,,
command,proc accumulate {md string args} {set cmd [tls::digest $md {*}$args -command dcmd];$cmd update [string range $string 0 20];$cmd update [string range $string 21 end];return [$cmd finalize]},,,,,,,,,
,,,,,,,,,,
command,# Test list ciphers,,,,,,,,,
Ciphers List,All,,,lcompare [lsort [exec_get_ciphers]] [list_tolower [lsort [::tls::ciphers]]],,,missing {rc5 rc5-cbc rc5-cfb rc5-ecb rc5-ofb} unexpected {aes-128-ccm aes-128-gcm aes-192-ccm aes-192-gcm aes-256-ccm aes-256-gcm},,,
,,,,,,,,,,
command,# Test list ciphers for protocols,,,,,,,,,
Ciphers By Protocol,SSL2,ssl2,,"lcompare [exec_get "":"" ciphers -ssl2] [::tls::ciphers ssl2]",,,missing {} unexpected {},,,
Ciphers By Protocol,SSL3,ssl3,,"lcompare [exec_get "":"" ciphers -ssl3] [::tls::ciphers ssl3]",,,missing {} unexpected {},,,
Ciphers By Protocol,TLS1,tls1,,"lcompare [exec_get "":"" ciphers -tls1] [::tls::ciphers tls1]",,,missing {} unexpected {},,,
Ciphers By Protocol,TLS1.1,tls1.1,,"lcompare [exec_get "":"" ciphers -tls1_1] [::tls::ciphers tls1.1]",,,missing {} unexpected {},,,
Ciphers By Protocol,TLS1.2,tls1.2,,"lcompare [exec_get "":"" ciphers -tls1_2] [::tls::ciphers tls1.2]",,,missing {} unexpected {},,,
Ciphers By Protocol,TLS1.3,tls1.3,,"lcompare [exec_get "":"" ciphers -tls1_3] [::tls::ciphers tls1.3]",,,missing {} unexpected {},,,
,,,,,,,,,,
command,# Test cipher descriptions,,,,,,,,,
Ciphers With Descriptions,SSL2,ssl2,,"lcompare [exec_get ""\r\n"" ciphers -ssl2 -v] [split [string trim [::tls::ciphers ssl2 1]] \n]",,,missing {} unexpected {},,,
Ciphers With Descriptions,SSL3,ssl3,,"lcompare [exec_get ""\r\n"" ciphers -ssl3 -v] [split [string trim [::tls::ciphers ssl3 1]] \n]",,,missing {} unexpected {},,,
Ciphers With Descriptions,TLS1,tls1,,"lcompare [exec_get ""\r\n"" ciphers -tls1 -v] [split [string trim [::tls::ciphers tls1 1]] \n]",,,missing {} unexpected {},,,
Ciphers With Descriptions,TLS1.1,tls1.1,,"lcompare [exec_get ""\r\n"" ciphers -tls1_1 -v] [split [string trim [::tls::ciphers tls1.1 1]] \n]",,,missing {} unexpected {},,,
Ciphers With Descriptions,TLS1.2,tls1.2,,"lcompare [exec_get ""\r\n"" ciphers -tls1_2 -v] [split [string trim [::tls::ciphers tls1.2 1]] \n]",,,missing {} unexpected {},,,
Ciphers With Descriptions,TLS1.3,tls1.3,,"lcompare [exec_get ""\r\n"" ciphers -tls1_3 -v] [split [string trim [::tls::ciphers tls1.3 1]] \n]",,,missing {} unexpected {},,,
,,,,,,,,,,
command,# Test protocol specific ciphers,,,,,,,,,
Ciphers Protocol Specific,SSL2,ssl2,,"lcompare [exec_get "":"" ciphers -ssl2 -s] [::tls::ciphers ssl2 0 1]",,,missing {} unexpected {},,,
Ciphers Protocol Specific,SSL3,ssl3,,"lcompare [exec_get "":"" ciphers -ssl3 -s] [::tls::ciphers ssl3 0 1]",,,missing {} unexpected {},,,
Ciphers Protocol Specific,TLS1,tls1,,"lcompare [exec_get "":"" ciphers -tls1 -s] [::tls::ciphers tls1 0 1]",,,missing {} unexpected {},,,
Ciphers Protocol Specific,TLS1.1,tls1.1,,"lcompare [exec_get "":"" ciphers -tls1_1 -s] [::tls::ciphers tls1.1 0 1]",,,missing {} unexpected {},,,
Ciphers Protocol Specific,TLS1.2,tls1.2,,"lcompare [exec_get "":"" ciphers -tls1_2 -s] [::tls::ciphers tls1.2 0 1]",,,missing {} unexpected {},,,
Ciphers Protocol Specific,TLS1.3,tls1.3,,"lcompare [concat [exec_get "":"" ciphers -tls1_3 -s] [exec_get "":"" ciphers -tls1_2 -s]] [::tls::ciphers tls1.3 0 1]",,,missing {} unexpected {},,,
,,,,,,,,,,
command,# Ciphers Error Cases,,,,,,,,,
Ciphers Errors,Too many args,,,::tls::ciphers too many args to pass,,,"wrong # args: should be ""tls::ciphers ?protocol? ?verbose? ?supported?""",,,1
Ciphers Errors,Invalid protocol,,,::tls::ciphers bogus,,,"bad protocol ""bogus"": must be ssl2, ssl3, tls1, tls1.1, tls1.2, or tls1.3",,,1
Ciphers Errors,Invalid verbose,,,::tls::ciphers tls1.3 bogus,,,"expected boolean value but got ""bogus""",,,1
Ciphers Errors,Invalid supported,,,::tls::ciphers tls1_3 1 bogus,,,"expected boolean value but got ""bogus""",,,1
Ciphers Errors,SSL2,!ssl2,,::tls::ciphers ssl2,,,ssl2: protocol not supported,,,1
Ciphers Errors,SSL3,!ssl3,,::tls::ciphers ssl3,,,ssl3: protocol not supported,,,1
,,,,,,,,,,
command,# Test list digests,,,,,,,,,
Digests List,All,,,lcompare [lsort [exec_get_digests]] [lsort [tls::digests]],,,missing {} unexpected {},,,
,,,,,,,,,,
command,# Test digest commands,,,,,,,,,
Digest Cmds,md4 cmd,,,"tls::md4 ""Example string for message digest tests.""",,,181CDCF9DB9B6FA8FC0A3BF9C34E29D9,,,
Digest Cmds,md5 cmd,,,"tls::md5 ""Example string for message digest tests.""",,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
Digest Cmds,sha1 cmd,,,"tls::sha1 ""Example string for message digest tests.""",,,3AEFE840CA492C387E903F15ED6019E7AD833B47,,,
Digest Cmds,sha256 cmd,,,"tls::sha256 ""Example string for message digest tests.""",,,B7DFDDEB0314A74FF56A8AC1E3DC57DF09BB52A96DA50F6549EB62CA61A0A491,,,
Digest Cmds,sha512 cmd,,,"tls::sha512 ""Example string for message digest tests.""",,,B56EC55E33193E17B61D669FB7B04AD2483DE93FE847C411BBEAE6440ECEA6C7CFDD2E6F35A06CB189FC62D799E785CDB7A23178323789D001BC8E44A0B5907F,,,
,,,,,,,,,,
command,# Test digest command for data,,,,,,,,,
Digest Data,md4,,,"tls::digest md4 ""Example string for message digest tests.""",,,181CDCF9DB9B6FA8FC0A3BF9C34E29D9,,,
Digest Data,md5,,,"tls::digest md5 ""Example string for message digest tests.""",,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
Digest Data,sha1,,,"tls::digest sha1 ""Example string for message digest tests.""",,,3AEFE840CA492C387E903F15ED6019E7AD833B47,,,
Digest Data,sha256,,,"tls::digest sha256 ""Example string for message digest tests.""",,,B7DFDDEB0314A74FF56A8AC1E3DC57DF09BB52A96DA50F6549EB62CA61A0A491,,,
Digest Data,sha512,,,"tls::digest sha512 ""Example string for message digest tests.""",,,B56EC55E33193E17B61D669FB7B04AD2483DE93FE847C411BBEAE6440ECEA6C7CFDD2E6F35A06CB189FC62D799E785CDB7A23178323789D001BC8E44A0B5907F,,,
Digest Data,md5 bin,,,"string toupper [binary encode hex [tls::digest md5 -bin ""Example string for message digest tests.""]]",,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
Digest Data,md5 hex,,,"tls::digest md5 -hex ""Example string for message digest tests.""",,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
Digest Data,md5 with arg,,,"tls::digest md5 -data ""Example string for message digest tests.""",,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
,,,,,,,,,,
command,# Test digest command for files,,,,,,,,,
Digest File,md4,,,tls::digest md4 -file md_data.dat,,,181CDCF9DB9B6FA8FC0A3BF9C34E29D9,,,
Digest File,md5,,,tls::digest md5 -file md_data.dat,,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
Digest File,sha1,,,tls::digest sha1 -file md_data.dat,,,3AEFE840CA492C387E903F15ED6019E7AD833B47,,,
Digest File,sha256,,,tls::digest sha256 -file md_data.dat,,,B7DFDDEB0314A74FF56A8AC1E3DC57DF09BB52A96DA50F6549EB62CA61A0A491,,,
Digest File,sha512,,,tls::digest sha512 -file md_data.dat,,,B56EC55E33193E17B61D669FB7B04AD2483DE93FE847C411BBEAE6440ECEA6C7CFDD2E6F35A06CB189FC62D799E785CDB7A23178323789D001BC8E44A0B5907F,,,
Digest File,md5 bin,,,string toupper [binary encode hex [tls::digest md5 -bin -file md_data.dat]],,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
Digest File,md5 hex,,,tls::digest md5 -hex -file md_data.dat,,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
,,,,,,,,,,
command,# Test digest command for channel,,,,,,,,,
Digest Chan,md4,,,read_chan md4 md_data.dat,,,181CDCF9DB9B6FA8FC0A3BF9C34E29D9,,,
Digest Chan,md5,,,read_chan md5 md_data.dat,,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
Digest Chan,sha1,,,read_chan sha1 md_data.dat,,,3AEFE840CA492C387E903F15ED6019E7AD833B47,,,
Digest Chan,sha256,,,read_chan sha256 md_data.dat,,,B7DFDDEB0314A74FF56A8AC1E3DC57DF09BB52A96DA50F6549EB62CA61A0A491,,,
Digest Chan,sha512,,,read_chan sha512 md_data.dat,,,B56EC55E33193E17B61D669FB7B04AD2483DE93FE847C411BBEAE6440ECEA6C7CFDD2E6F35A06CB189FC62D799E785CDB7A23178323789D001BC8E44A0B5907F,,,
Digest Chan,md5 bin,,,string toupper [binary encode hex [read_chan md5 md_data.dat -bin]],,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
Digest Chan,md5 hex,,,read_chan md5 md_data.dat -hex,,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
,,,,,,,,,,
command,# Test digest command for accumulator command,,,,,,,,,
Digest Command,md4,,,"accumulate md4 ""Example string for message digest tests.""",,,181CDCF9DB9B6FA8FC0A3BF9C34E29D9,,,
Digest Command,md5,,,"accumulate md5 ""Example string for message digest tests.""",,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
Digest Command,sha1,,,"accumulate sha1 ""Example string for message digest tests.""",,,3AEFE840CA492C387E903F15ED6019E7AD833B47,,,
Digest Command,sha256,,,"accumulate sha256 ""Example string for message digest tests.""",,,B7DFDDEB0314A74FF56A8AC1E3DC57DF09BB52A96DA50F6549EB62CA61A0A491,,,
Digest Command,sha512,,,"accumulate sha512 ""Example string for message digest tests.""",,,B56EC55E33193E17B61D669FB7B04AD2483DE93FE847C411BBEAE6440ECEA6C7CFDD2E6F35A06CB189FC62D799E785CDB7A23178323789D001BC8E44A0B5907F,,,
Digest Command,md5 bin,,,"string toupper [binary encode hex [accumulate md5 ""Example string for message digest tests."" -bin]]",,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
Digest Command,md5 hex,,,"accumulate md5 ""Example string for message digest tests."" -hex",,,CCB1BE2E11D8183E843FF73DA8C6D206,,,
,,,,,,,,,,
command,# Test HMAC,,,,,,,,,
Digest HMAC,data,,,"tls::digest md5 -key ""Example key"" -data ""Example string for message digest tests.""",,,901DA6E6976A71650C77443C37FF9C7F,,,
Digest HMAC,file,,,"tls::digest md5 -key ""Example key"" -file md_data.dat",,,901DA6E6976A71650C77443C37FF9C7F,,,
Digest HMAC,channel,,,"read_chan md5 md_data.dat -key ""Example key""",,,901DA6E6976A71650C77443C37FF9C7F,,,
Digest HMAC,data bin,,,"string toupper [binary encode hex [tls::digest md5 -bin -key ""Example key"" -data ""Example string for message digest tests.""]]",,,901DA6E6976A71650C77443C37FF9C7F,,,
,,,,,,,,,,
command,# Digest Error Cases,,,,,,,,,
Digest Errors,Too few args,,,::tls::digest,,,"wrong # args: should be ""::tls::digest type ?-bin|-hex? ?-key hmac_key? [-channel chan | -file filename | ?-data? data]""",,,1
Digest Errors,Too many args,,,::tls::digest too many args to pass the test without an error,,,"wrong # args: should be ""::tls::digest type ?-bin|-hex? ?-key hmac_key? [-channel chan | -file filename | ?-data? data]""",,,1
Digest Errors,Invalid digest,,,::tls::digest bogus data,,,"Invalid digest type ""bogus""",,,1
Digest Errors,Invalid option,,,::tls::digest sha256 -bogus value,,,"bad option ""-bogus"": must be -bin, -data, -file, -filename, -hex, or -key",,,1
Digest Errors,Invalid file,,,::tls::digest sha256 -file bogus,,,"couldn't open ""bogus"": no such file or directory",,,1
Digest Errors,Invalid channel,,,::tls::digest sha256 -channel bogus,,,"can not find channel named ""bogus""",,,1
,,,,,,,,,,
command,# Test list MACs,,,,,,,,,
MAC List,All,,,lcompare [exec_get_macs] [tls::macs],,,missing {} unexpected {},,,
,,,,,,,,,,
command,# Test list protocols,,,,,,,,,
Protocols,All,,,lcompare $protocols [::tls::protocols],,,missing {ssl2 ssl3} unexpected {},,,
,,,,,,,,,,
command,# Test show version,,,,,,,,,
Version,All,,,::tls::version,,glob,*,,,
Version,OpenSSL,OpenSSL,,::tls::version,,glob,OpenSSL*,,,
,,,,,,,,,,
command,# Error Cases,,,,,,,,,
Error Cases,Digests Too many args,,,::tls::digests too many args,,,"wrong # args: should be ""::tls::digests""",,,1
Error Cases,MACs Too many args,,,::tls::macs too many args,,,"wrong # args: should be ""::tls::macs""",,,1
Error Cases,Protocols Too many args,,,::tls::protocols too many args,,,"wrong # args: should be ""::tls::protocols""",,,1
Error Cases,Version Too many args,,,::tls::version too many args,,,"wrong # args: should be ""::tls::version""",,,1

# Auto generated test cases for ciphers.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]}
proc exec_get_ciphers {} {set list [list];set data [exec openssl list -cipher-algorithms];foreach line [split $data "\n"] {foreach {cipher null alias} [split [string trim $line]] {lappend list [string tolower $cipher]}};return [lsort -unique $list]}
proc exec_get_digests {} {set list [list];set data [exec openssl dgst -list];foreach line [split $data "\n"] {foreach digest $line {if {[string match "-*" $digest]} {lappend list [string trimleft $digest "-"]}}};return [lsort $list]}
command,proc exec_get_macs {} {return [list cmac hmac]},,,,,,,,,
proc read_chan {md filename args} {set ch [open $filename rb];fconfigure $ch -translation binary;set bsize [fconfigure $ch -buffersize];set new [tls::digest $md {*}$args -chan $ch];while {![eof $new]} {set result [read $new $bsize]};close $new;return $result}
proc accumulate {md string args} {set cmd [tls::digest $md {*}$args -command dcmd];$cmd update [string range $string 0 20];$cmd update [string range $string 21 end];return [$cmd finalize]}
# Test list ciphers


test Ciphers_List-1.1 {All} -body {
	lcompare [lsort [exec_get_ciphers]] [list_tolower [lsort [::tls::ciphers]]]
    } -result {missing {rc5 rc5-cbc rc5-cfb rc5-ecb rc5-ofb} unexpected {aes-128-ccm aes-128-gcm aes-192-ccm aes-192-gcm aes-256-ccm aes-256-gcm}}
# Test list ciphers for protocols


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

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

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

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

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

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

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

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

test Ciphers_Protocol_Specific-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 Ciphers_Protocol_Specific-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 Ciphers_Protocol_Specific-4.6 {TLS1.3} -constraints {tls1.3} -body {
	lcompare [concat [exec_get ":" ciphers -tls1_3 -s] [exec_get ":" ciphers -tls1_2 -s]] [::tls::ciphers tls1.3 0 1]
    } -result {missing {} unexpected {}}
# Ciphers Error Cases


test Ciphers_Errors-5.1 {Too many args} -body {
	::tls::ciphers too many args to pass
    } -result {wrong # args: should be "tls::ciphers ?protocol? ?verbose? ?supported?"} -returnCodes {1}

test Ciphers_Errors-5.2 {Invalid protocol} -body {
	::tls::ciphers bogus
    } -result {bad protocol "bogus": must be ssl2, ssl3, tls1, tls1.1, tls1.2, or tls1.3} -returnCodes {1}

test Ciphers_Errors-5.3 {Invalid verbose} -body {
	::tls::ciphers tls1.3 bogus
    } -result {expected boolean value but got "bogus"} -returnCodes {1}

test Ciphers_Errors-5.4 {Invalid supported} -body {
	::tls::ciphers tls1_3 1 bogus
    } -result {expected boolean value but got "bogus"} -returnCodes {1}

test Ciphers_Errors-5.5 {SSL2} -constraints {!ssl2} -body {
	::tls::ciphers ssl2
    } -result {ssl2: protocol not supported} -returnCodes {1}

test Ciphers_Errors-5.6 {SSL3} -constraints {!ssl3} -body {
	::tls::ciphers ssl3
    } -result {ssl3: protocol not supported} -returnCodes {1}
# Test list digests


test Digests_List-6.1 {All} -body {
	lcompare [lsort [exec_get_digests]] [lsort [tls::digests]]
    } -result {missing {} unexpected {}}
# Test digest commands


test Digest_Cmds-7.1 {md4 cmd} -body {
	tls::md4 "Example string for message digest tests."
    } -result {181CDCF9DB9B6FA8FC0A3BF9C34E29D9}

test Digest_Cmds-7.2 {md5 cmd} -body {
	tls::md5 "Example string for message digest tests."
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}

test Digest_Cmds-7.3 {sha1 cmd} -body {
	tls::sha1 "Example string for message digest tests."
    } -result {3AEFE840CA492C387E903F15ED6019E7AD833B47}

test Digest_Cmds-7.4 {sha256 cmd} -body {
	tls::sha256 "Example string for message digest tests."
    } -result {B7DFDDEB0314A74FF56A8AC1E3DC57DF09BB52A96DA50F6549EB62CA61A0A491}

test Digest_Cmds-7.5 {sha512 cmd} -body {
	tls::sha512 "Example string for message digest tests."
    } -result {B56EC55E33193E17B61D669FB7B04AD2483DE93FE847C411BBEAE6440ECEA6C7CFDD2E6F35A06CB189FC62D799E785CDB7A23178323789D001BC8E44A0B5907F}
# Test digest command for data


test Digest_Data-8.1 {md4} -body {
	tls::digest md4 "Example string for message digest tests."
    } -result {181CDCF9DB9B6FA8FC0A3BF9C34E29D9}

test Digest_Data-8.2 {md5} -body {
	tls::digest md5 "Example string for message digest tests."
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}

test Digest_Data-8.3 {sha1} -body {
	tls::digest sha1 "Example string for message digest tests."
    } -result {3AEFE840CA492C387E903F15ED6019E7AD833B47}

test Digest_Data-8.4 {sha256} -body {
	tls::digest sha256 "Example string for message digest tests."
    } -result {B7DFDDEB0314A74FF56A8AC1E3DC57DF09BB52A96DA50F6549EB62CA61A0A491}

test Digest_Data-8.5 {sha512} -body {
	tls::digest sha512 "Example string for message digest tests."
    } -result {B56EC55E33193E17B61D669FB7B04AD2483DE93FE847C411BBEAE6440ECEA6C7CFDD2E6F35A06CB189FC62D799E785CDB7A23178323789D001BC8E44A0B5907F}

test Digest_Data-8.6 {md5 bin} -body {
	string toupper [binary encode hex [tls::digest md5 -bin "Example string for message digest tests."]]
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}

test Digest_Data-8.7 {md5 hex} -body {
	tls::digest md5 -hex "Example string for message digest tests."
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}

test Digest_Data-8.8 {md5 with arg} -body {
	tls::digest md5 -data "Example string for message digest tests."
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}
# Test digest command for files


test Digest_File-9.1 {md4} -body {
	tls::digest md4 -file md_data.dat
    } -result {181CDCF9DB9B6FA8FC0A3BF9C34E29D9}

test Digest_File-9.2 {md5} -body {
	tls::digest md5 -file md_data.dat
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}

test Digest_File-9.3 {sha1} -body {
	tls::digest sha1 -file md_data.dat
    } -result {3AEFE840CA492C387E903F15ED6019E7AD833B47}

test Digest_File-9.4 {sha256} -body {
	tls::digest sha256 -file md_data.dat
    } -result {B7DFDDEB0314A74FF56A8AC1E3DC57DF09BB52A96DA50F6549EB62CA61A0A491}

test Digest_File-9.5 {sha512} -body {
	tls::digest sha512 -file md_data.dat
    } -result {B56EC55E33193E17B61D669FB7B04AD2483DE93FE847C411BBEAE6440ECEA6C7CFDD2E6F35A06CB189FC62D799E785CDB7A23178323789D001BC8E44A0B5907F}

test Digest_File-9.6 {md5 bin} -body {
	string toupper [binary encode hex [tls::digest md5 -bin -file md_data.dat]]
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}

test Digest_File-9.7 {md5 hex} -body {
	tls::digest md5 -hex -file md_data.dat
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}
# Test digest command for channel


test Digest_Chan-10.1 {md4} -body {
	read_chan md4 md_data.dat
    } -result {181CDCF9DB9B6FA8FC0A3BF9C34E29D9}

test Digest_Chan-10.2 {md5} -body {
	read_chan md5 md_data.dat
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}

test Digest_Chan-10.3 {sha1} -body {
	read_chan sha1 md_data.dat
    } -result {3AEFE840CA492C387E903F15ED6019E7AD833B47}

test Digest_Chan-10.4 {sha256} -body {
	read_chan sha256 md_data.dat
    } -result {B7DFDDEB0314A74FF56A8AC1E3DC57DF09BB52A96DA50F6549EB62CA61A0A491}

test Digest_Chan-10.5 {sha512} -body {
	read_chan sha512 md_data.dat
    } -result {B56EC55E33193E17B61D669FB7B04AD2483DE93FE847C411BBEAE6440ECEA6C7CFDD2E6F35A06CB189FC62D799E785CDB7A23178323789D001BC8E44A0B5907F}

test Digest_Chan-10.6 {md5 bin} -body {
	string toupper [binary encode hex [read_chan md5 md_data.dat -bin]]
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}

test Digest_Chan-10.7 {md5 hex} -body {
	read_chan md5 md_data.dat -hex
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}
# Test digest command for accumulator command


test Digest_Command-11.1 {md4} -body {
	accumulate md4 "Example string for message digest tests."
    } -result {181CDCF9DB9B6FA8FC0A3BF9C34E29D9}

test Digest_Command-11.2 {md5} -body {
	accumulate md5 "Example string for message digest tests."
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}

test Digest_Command-11.3 {sha1} -body {
	accumulate sha1 "Example string for message digest tests."
    } -result {3AEFE840CA492C387E903F15ED6019E7AD833B47}

test Digest_Command-11.4 {sha256} -body {
	accumulate sha256 "Example string for message digest tests."
    } -result {B7DFDDEB0314A74FF56A8AC1E3DC57DF09BB52A96DA50F6549EB62CA61A0A491}

test Digest_Command-11.5 {sha512} -body {
	accumulate sha512 "Example string for message digest tests."
    } -result {B56EC55E33193E17B61D669FB7B04AD2483DE93FE847C411BBEAE6440ECEA6C7CFDD2E6F35A06CB189FC62D799E785CDB7A23178323789D001BC8E44A0B5907F}

test Digest_Command-11.6 {md5 bin} -body {
	string toupper [binary encode hex [accumulate md5 "Example string for message digest tests." -bin]]
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}

test Digest_Command-11.7 {md5 hex} -body {
	accumulate md5 "Example string for message digest tests." -hex
    } -result {CCB1BE2E11D8183E843FF73DA8C6D206}
# Test HMAC


test Digest_HMAC-12.1 {data} -body {
	tls::digest md5 -key "Example key" -data "Example string for message digest tests."
    } -result {901DA6E6976A71650C77443C37FF9C7F}

test Digest_HMAC-12.2 {file} -body {
	tls::digest md5 -key "Example key" -file md_data.dat
    } -result {901DA6E6976A71650C77443C37FF9C7F}

test Digest_HMAC-12.3 {channel} -body {
	read_chan md5 md_data.dat -key "Example key"
    } -result {901DA6E6976A71650C77443C37FF9C7F}

test Digest_HMAC-12.4 {data bin} -body {
	string toupper [binary encode hex [tls::digest md5 -bin -key "Example key" -data "Example string for message digest tests."]]
    } -result {901DA6E6976A71650C77443C37FF9C7F}
# Digest Error Cases


test Digest_Errors-13.1 {Too few args} -body {
	::tls::digest
    } -result {wrong # args: should be "::tls::digest type ?-bin|-hex? ?-key hmac_key? [-channel chan | -file filename | ?-data? data]"} -returnCodes {1}

test Digest_Errors-13.2 {Too many args} -body {
	::tls::digest too many args to pass the test without an error
    } -result {wrong # args: should be "::tls::digest type ?-bin|-hex? ?-key hmac_key? [-channel chan | -file filename | ?-data? data]"} -returnCodes {1}

test Digest_Errors-13.3 {Invalid digest} -body {
	::tls::digest bogus data
    } -result {Invalid digest type "bogus"} -returnCodes {1}

test Digest_Errors-13.4 {Invalid option} -body {
	::tls::digest sha256 -bogus value
    } -result {bad option "-bogus": must be -bin, -data, -file, -filename, -hex, or -key} -returnCodes {1}

test Digest_Errors-13.5 {Invalid file} -body {
	::tls::digest sha256 -file bogus
    } -result {couldn't open "bogus": no such file or directory} -returnCodes {1}

test Digest_Errors-13.6 {Invalid channel} -body {
	::tls::digest sha256 -channel bogus
    } -result {can not find channel named "bogus"} -returnCodes {1}
# Test list MACs


test MAC_List-14.1 {All} -body {
	lcompare [exec_get_macs] [tls::macs]
    } -result {missing {} unexpected {}}
# Test list protocols


test Protocols-15.1 {All} -body {
	lcompare $protocols [::tls::protocols]
    } -result {missing {ssl2 ssl3} unexpected {}}
# Test show version


test Version-16.1 {All} -body {
	::tls::version
    } -match {glob} -result {*}

test Version-16.2 {OpenSSL} -constraints {OpenSSL} -body {
	::tls::version
    } -match {glob} -result {OpenSSL*}
# Error Cases


test Error_Cases-17.1 {Digests Too many args} -body {
	::tls::digests too many args
    } -result {wrong # args: should be "::tls::digests"} -returnCodes {1}

test Error_Cases-17.2 {MACs Too many args} -body {
	::tls::macs too many args
    } -result {wrong # args: should be "::tls::macs"} -returnCodes {1}

test Error_Cases-17.3 {Protocols Too many args} -body {
	::tls::protocols too many args
    } -result {wrong # args: should be "::tls::protocols"} -returnCodes {1}

test Error_Cases-17.4 {Version Too many args} -body {
	::tls::version too many args
    } -result {wrong # args: should be "::tls::version"} -returnCodes {1}

# Cleanup
::tcltest::cleanupTests
return

Example string for message digest tests.

# Define the object files and resource file that make up the extension.
# Note the resource file does not makes sense if doing a static library build
# hence it is under that condition. TMP_DIR is the output directory
# defined by rules for object files.
PRJ_OBJS = $(TMP_DIR)\tls.obj \
	$(TMP_DIR)\tlsBIO.obj \
	$(TMP_DIR)\tlsDigest.obj \
	$(TMP_DIR)\tlsInfo.obj \
	$(TMP_DIR)\tlsIO.obj \
	$(TMP_DIR)\tlsX509.obj

# Define any additional project include flags
# SSL_INSTALL_FOLDER = with the OpenSSL installation folder following.
PRJ_INCLUDES = -I"$(SSL_INSTALL_FOLDER)\include" -I"$(OPENSSL_INSTALL_DIR)\include"

# Define any additional compiler flags that might be required for the project
PRJ_DEFINES = -D NO_SSL2 -D NO_SSL3 -D _CRT_SECURE_NO_WARNINGS

#
# SSL Libs:
#    1. ${LIBCRYPTO}.dll
#    2. ${LIBSSL}.dll
# Where LIBCRYPTO (#1.) and LIBSSL (#2.) are defined as follows:
#    v1.1: libcrypto-1.1-x64.dll and libssl-1.1-x64.dll
#    v3: libcrypto-3-x64.dll and libssl-3-x64.dll
# On *nix libcrypto.so.* and libssl.so.* (where suffix is a version indicator).
#
PRJ_LIBS = \
	"$(SSL_INSTALL_FOLDER)\lib\libssl.lib" \
	"$(SSL_INSTALL_FOLDER)\lib\libcrypto.lib" \
	WS2_32.LIB GDI32.LIB ADVAPI32.LIB CRYPT32.LIB USER32.LIB

# Define the standard targets
!include "targets.vc"

# Project specific targets

all:

clean: default-clean

# We must define a pkgindex target that will create a pkgIndex.tcl
# file in the $(OUT_DIR) directory. We can just redirect to the
# default-pkgindex target for our sample extension.
pkgindex: default-pkgindex

# The default install target only installs binaries and scripts so add
# an additional target for our documentation. Note this *adds* a target
# since no commands are listed after it. The original targets for
# install (from targets.vc) will remain.
install: default-pkgindex-tea default-install default-install-docs-html

# Test package
test: default-test