# 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 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 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])

/*
 *  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 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)				\
    var = Tcl_GetStringFromObj(objv[idx], (Tcl_Size *)NULL);\
    OPT_POSTLOG()


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

#define OPTBOOL(option, var)			\
    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/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

static void
MessageCallback(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg) {
    State *statePtr = (State*)arg;
    Tcl_Interp *interp	= statePtr->interp;
    Tcl_Obj *cmdPtr;
    char *ver, *type;
    BIO *bio;
    char buffer[15000];
    buffer[0] = 0;

    dprintf("Called");

    if (statePtr->callback == (Tcl_Obj*)NULL)
	return;

 *	  to a string describing the SSL negotiation failure reason
 *
 *-------------------------------------------------------------------
 */
static int
VerifyCallback(int ok, X509_STORE_CTX *ctx) {
    Tcl_Obj *cmdPtr;
    SSL   *ssl		= (SSL*)X509_STORE_CTX_get_ex_data(ctx, SSL_get_ex_data_X509_STORE_CTX_idx());
    X509  *cert		= X509_STORE_CTX_get_current_cert(ctx);
    State *statePtr	= (State*)SSL_get_app_data(ssl);
    Tcl_Interp *interp	= statePtr->interp;
    int depth		= X509_STORE_CTX_get_error_depth(ctx);
    int err		= X509_STORE_CTX_get_error(ctx);

    dprintf("Called");

/********************/
/* Commands         */
/********************/

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

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

    dprintf("Called");

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

    ERR_clear_error();

    switch ((enum protocol)index) {
	case TLS_SSL2:
#if OPENSSL_VERSION_NUMBER >= 0x10100000L || defined(NO_SSL2) || defined(OPENSSL_NO_SSL2)
	    Tcl_AppendResult(interp, protocols[index], ": protocol not supported", NULL);
	    return TCL_ERROR;
#else
	    method = SSLv2_method(); break;
#endif
	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
	    method = SSLv3_method(); 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
	    method = TLSv1_method(); 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
	    method = TLSv1_1_method(); 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
	    method = TLSv1_2_method(); 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
	    method = TLS_method();
	    SSL_CTX_set_min_proto_version(ctx, TLS1_3_VERSION);
	    SSL_CTX_set_max_proto_version(ctx, TLS1_3_VERSION);
	    break;
#endif
	default:
	    method = TLS_method();
	    break;
    }

    ctx = SSL_CTX_new(method);
    if (ctx == NULL) {
	Tcl_AppendResult(interp, GET_ERR_REASON(), NULL);
	return TCL_ERROR;
    }

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

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

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

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

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

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

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

    dprintf("Called");

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

    ERR_clear_error();

    objPtr = Tcl_NewListObj(0, NULL);

#if OPENSSL_VERSION_NUMBER < 0x10100000L && !defined(NO_SSL2) && !defined(OPENSSL_NO_SSL2)
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_SSL2], -1));
#endif
#if !defined(NO_SSL3) && !defined(OPENSSL_NO_SSL3) && !defined(OPENSSL_NO_SSL3_METHOD)
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_SSL3], -1));
#endif
#if !defined(NO_TLS1) && !defined(OPENSSL_NO_TLS1) && !defined(OPENSSL_NO_TLS1_METHOD)
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1], -1));
#endif
#if !defined(NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_1) && !defined(OPENSSL_NO_TLS1_1_METHOD)
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1_1], -1));
#endif
#if !defined(NO_TLS1_2) && !defined(OPENSSL_NO_TLS1_2) && !defined(OPENSSL_NO_TLS1_2_METHOD)
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1_2], -1));
#endif
#if !defined(NO_TLS1_3) && !defined(OPENSSL_NO_TLS1_3)
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(protocols[TLS_TLS1_3], -1));
#endif

    Tcl_SetObjResult(interp, objPtr);
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------
 *
 * HandshakeObjCmd --
 *
 *	This command is used to verify whether the handshake is complete
 *	or not.
 *
 * Results:
 *	A standard Tcl result. 1 means handshake complete, 0 means pending.

    }

    dprintf("Returning TCL_OK with data \"%i\"", ret);
    Tcl_SetObjResult(interp, Tcl_NewIntObj(ret));
    return(TCL_OK);
}















/*
 *-------------------------------------------------------------------
 *
 * ImportObjCmd --
 *
 *	This procedure is invoked to process the "ssl" command
 *

 *-------------------------------------------------------------------
 */
static int
ImportObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Channel chan;		/* The channel to set a mode on. */
    State *statePtr;		/* client state for ssl socket */
    SSL_CTX *ctx		= NULL;
    Tcl_Obj *script		= NULL;
    Tcl_Obj *password		= NULL;
    Tcl_Obj *vcmd		= NULL;
    Tcl_DString upperChannelTranslation, upperChannelBlocking, upperChannelEncoding, upperChannelEOFChar;
    int idx;
    Tcl_Size len;
    int flags			= TLS_TCL_INIT;
    int server			= 0;	/* is connection incoming or outgoing? */
    char *keyfile		= NULL;
    char *certfile		= NULL;
    unsigned char *key		= NULL;
    Tcl_Size key_len		= 0;
    unsigned char *cert		= NULL;
    Tcl_Size cert_len		= 0;
    char *ciphers		= NULL;
    char *ciphersuites		= NULL;
    char *CAfile		= NULL;
    char *CApath		= NULL;
    char *DHparams		= NULL;
    char *model			= NULL;
    char *servername		= NULL;	/* hostname for Server Name Indication */
    const unsigned char *session_id = NULL;

    Tcl_Obj *alpn		= NULL;
    int ssl2 = 0, ssl3 = 0;
    int tls1 = 1, tls1_1 = 1, tls1_2 = 1, tls1_3 = 1;
    int proto = 0, level = -1;
    int verify = 0, require = 0, request = 1, post_handshake = 0;
    (void) clientData;

    dprintf("Called");

	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], (Tcl_Size *)NULL);





	if (opt[0] != '-')



















































































	    break;

	OPTOBJ("-alpn", alpn);
	OPTSTR("-cadir", CApath);
	OPTSTR("-cafile", CAfile);
	OPTBYTE("-cert", cert, cert_len);
	OPTSTR("-certfile", certfile);
	OPTSTR("-cipher", ciphers);
	OPTSTR("-ciphers", ciphers);
	OPTSTR("-ciphersuites", ciphersuites);
	OPTOBJ("-command", script);
	OPTSTR("-dhparams", DHparams);
	OPTBYTE("-key", key, key_len);
	OPTSTR("-keyfile", keyfile);
	OPTSTR("-model", model);
	OPTOBJ("-password", password);
	OPTBOOL("-post_handshake", post_handshake);
	OPTBOOL("-request", request);
	OPTBOOL("-require", require);
	OPTINT("-security_level", level);
	OPTBOOL("-server", server);
	OPTSTR("-servername", servername);
	OPTSTR("-session_id", session_id);
	OPTBOOL("-ssl2", ssl2);
	OPTBOOL("-ssl3", ssl3);
	OPTBOOL("-tls1", tls1);
	OPTBOOL("-tls1.1", tls1_1);
	OPTBOOL("-tls1.2", tls1_2);
	OPTBOOL("-tls1.3", tls1_3);
	OPTOBJ("-validatecommand", vcmd);
	OPTOBJ("-vcmd", vcmd);

	OPTBAD("option", "-alpn, -cadir, -cafile, -cert, -certfile, -cipher, -ciphersuites, -command, -dhparams, -key, -keyfile, -model, -password, -post_handshake, -request, -require, -security_level, -server, -servername, -session_id, -ssl2, -ssl3, -tls1, -tls1.1, -tls1.2, -tls1.3, or -validatecommand");

	return TCL_ERROR;
    }
    if (request)		verify |= SSL_VERIFY_CLIENT_ONCE | SSL_VERIFY_PEER;
    if (request && require)	verify |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT;
    if (request && post_handshake)	verify |= SSL_VERIFY_POST_HANDSHAKE;
    if (verify == 0)		verify = SSL_VERIFY_NONE;

    proto |= (ssl2 ? TLS_PROTO_SSL2 : 0);
    proto |= (ssl3 ? TLS_PROTO_SSL3 : 0);

    statePtr->flags	= flags;
    statePtr->interp	= interp;
    statePtr->vflags	= verify;
    statePtr->err	= "";

    /* allocate script */
    if (script) {
	(void) Tcl_GetStringFromObj(script, &len);
	if (len) {
	    statePtr->callback = script;
	    Tcl_IncrRefCount(statePtr->callback);
	}
    }

    /* allocate password */
    if (password) {
	(void) Tcl_GetStringFromObj(password, &len);
	if (len) {
	    statePtr->password = password;
	    Tcl_IncrRefCount(statePtr->password);
	}
    }

    /* allocate validate command */
    if (vcmd) {
	(void) Tcl_GetStringFromObj(vcmd, &len);

	    Tcl_SetErrorCode(interp, "TLS", "IMPORT", "HOSTNAME", "FAILED", (char *) NULL);
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
    }

    /* Resume session id */
    if (session_id && strlen(session_id) <= SSL_MAX_SID_CTX_LENGTH) {
	/* SSL_set_session() */
	if (!SSL_SESSION_set1_id_context(SSL_get_session(statePtr->ssl), session_id, (unsigned int) strlen(session_id))) {
	    Tcl_AppendResult(interp, "Resume session failed: ", GET_ERR_REASON(), (char *) NULL);
	    Tcl_SetErrorCode(interp, "TLS", "IMPORT", "SESSION", "FAILED", (char *) NULL);
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
    }

    /* 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;
	Tcl_Size cnt, i;
	int j;
	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);

	statePtr->protos_len = 0;
    }

    /*
     * SSL Callbacks
     */
    SSL_set_app_data(statePtr->ssl, (void *)statePtr);	/* point back to us */

    SSL_set_verify(statePtr->ssl, verify, VerifyCallback);
    SSL_set_info_callback(statePtr->ssl, InfoCallback);

    /* Callback for observing protocol messages */
#ifndef OPENSSL_NO_SSL_TRACE
    /* void SSL_CTX_set_msg_callback_arg(statePtr->ctx, (void *)statePtr);
    void SSL_CTX_set_msg_callback(statePtr->ctx, MessageCallback); */

static SSL_CTX *
CTX_Init(State *statePtr, int isServer, int proto, char *keyfile, char *certfile,
    unsigned char *key, unsigned char *cert, int key_len, int cert_len, char *CApath,
    char *CAfile, char *ciphers, char *ciphersuites, int level, char *DHparams) {
    Tcl_Interp *interp = statePtr->interp;
    SSL_CTX *ctx = NULL;
    Tcl_DString ds;
    Tcl_DString ds1;
    int off = 0, abort = 0;
    int load_private_key;
    const SSL_METHOD *method;

    dprintf("Called");

    if (!proto) {

	load_private_key = 1;
	if (SSL_CTX_use_certificate_ASN1(ctx, cert_len, cert) <= 0) {
	    Tcl_AppendResult(interp, "unable to set certificate: ",
		GET_ERR_REASON(), (char *) NULL);
	    SSL_CTX_free(ctx);
	    return NULL;
	}

    } else {
	certfile = (char*)X509_get_default_cert_file();

	if (SSL_CTX_use_certificate_file(ctx, certfile, SSL_FILETYPE_PEM) <= 0) {
#if 0
	    Tcl_AppendResult(interp, "unable to use default certificate file ", certfile, ": ",
		GET_ERR_REASON(), (char *) NULL);

    /* Get certificate for peer or self */
    if (objc == 2) {
	peer = SSL_get_peer_certificate(statePtr->ssl);
    } else {
	peer = SSL_get_certificate(statePtr->ssl);
    }

    /* Get X509 certificate info */
    if (peer) {
	objPtr = Tls_NewX509Obj(interp, peer);
	if (objc == 2) {
	    X509_free(peer);
	    peer = NULL;
	}

    (void) clientData;

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

    chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], (Tcl_Size *)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()) {

	LAPPEND_INT(interp, objPtr, "algorithm_bits", alg_bits);
	/* alg_bits is actual key secret bits. If use bits and secret (algorithm) bits differ,
	   the rest of the bits are fixed, i.e. for limited export ciphers (bits < 56) */

	/* Indicates which SSL/TLS protocol version first defined the cipher */
	LAPPEND_STR(interp, objPtr, "min_version", SSL_CIPHER_get_version(cipher), -1);

	/* Cipher NID */
	LAPPEND_STR(interp, objPtr, "cipherNID", (char *)OBJ_nid2ln(SSL_CIPHER_get_cipher_nid(cipher)), -1);
	LAPPEND_STR(interp, objPtr, "digestNID", (char *)OBJ_nid2ln(SSL_CIPHER_get_digest_nid(cipher)), -1);
	LAPPEND_STR(interp, objPtr, "keyExchangeNID", (char *)OBJ_nid2ln(SSL_CIPHER_get_kx_nid(cipher)), -1);
	LAPPEND_STR(interp, objPtr, "authenticationNID", (char *)OBJ_nid2ln(SSL_CIPHER_get_auth_nid(cipher)), -1);

	/* message authentication code - Cipher is AEAD (e.g. GCM or ChaCha20/Poly1305) or not */
	/* Authenticated Encryption with associated data (AEAD) check */
	LAPPEND_BOOL(interp, objPtr, "cipher_is_aead", SSL_CIPHER_is_aead(cipher));

	/* Digest used during the SSL/TLS handshake when using the cipher. */
	md = SSL_CIPHER_get_handshake_digest(cipher);
	LAPPEND_STR(interp, objPtr, "handshake_digest", (char *)EVP_MD_name(md), -1);

	/* Get OpenSSL-specific ID, not IANA ID */
	LAPPEND_INT(interp, objPtr, "cipher_id", (int) SSL_CIPHER_get_id(cipher));

	/* Two-byte ID used in the TLS protocol of the given cipher */
	LAPPEND_INT(interp, objPtr, "protocol_id", (int) SSL_CIPHER_get_protocol_id(cipher));

	/* Textual description of the cipher */

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




    }

    /* Session info */
    session = SSL_get_session(ssl);
    if (session != NULL) {
	const unsigned char *ticket;
	size_t len2;

    /* CA List */
    /* IF not a server, same as SSL_get0_peer_CA_list. If server same as SSL_CTX_get_client_CA_list */
    listPtr = Tcl_NewListObj(0, NULL);
    STACK_OF(X509_NAME) *ca_list;
    if ((ca_list = SSL_get_client_CA_list(ssl)) != NULL) {
	char buffer[BUFSIZ];

	for (int i = 0; i < sk_X509_NAME_num(ca_list); i++) {
	    X509_NAME *name = sk_X509_NAME_value(ca_list, i);
	    if (name) {
		X509_NAME_oneline(name, buffer, BUFSIZ);
		Tcl_ListObjAppendElement(interp, listPtr, Tcl_NewStringObj(buffer, -1));
	    }
	}
    }
    LAPPEND_OBJ(interp, objPtr, "caList", listPtr);
    LAPPEND_INT(interp, objPtr, "caListCount", sk_X509_NAME_num(ca_list));

    Tcl_SetObjResult(interp, objPtr);
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------
 *
 * VersionObjCmd -- return version string from OpenSSL.
 *
 * 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;
    (void) clientData;
    (void) objc;
    (void) objv;

    dprintf("Called");

    objPtr = Tcl_NewStringObj(OPENSSL_VERSION_TEXT, -1);
    Tcl_SetObjResult(interp, objPtr);

    return TCL_OK;
}

/*
 *-------------------------------------------------------------------
 *
 * MiscObjCmd -- misc commands

    }

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

    Tcl_CreateObjCommand(interp, "tls::ciphers", CiphersObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::connection", ConnectionInfoObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::handshake", HandshakeObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::import", ImportObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);

    Tcl_CreateObjCommand(interp, "tls::unimport", UnimportObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::status", StatusObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::version", VersionObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::misc", MiscObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::protocols", ProtocolsObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);




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

    return Tcl_PkgProvide(interp, PACKAGE_NAME, PACKAGE_VERSION);
}

	    rnd_seed[i] = 1 + (char) (255.0 * rand()/(RAND_MAX+1.0));
	}
	RAND_seed(rnd_seed, sizeof(rnd_seed));
    } while (RAND_status() != 1);
#endif

#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
	Tcl_MutexUnlock(&init_mx);
#endif

    return(status);
}

	} else {
	    dprintf("Calling SSL_connect()");
	    err = SSL_connect(statePtr->ssl);
	}

	if (err > 0) {
	    dprintf("Accept or connect was successful");

	    err = BIO_flush(statePtr->bio);
	    if (err <= 0) {
		dprintf("Flushing the lower layers failed, this will probably terminate this session");
	    }
	} else {
	    dprintf("Accept or connect failed");
	}

	    *errorCodePtr = EINVAL;
	    Tls_Error(statePtr, "Peer has closed the connection for writing by sending the close_notify alert");
	    return(-1);

	case SSL_ERROR_SYSCALL:
	    /* Some non-recoverable, fatal I/O error occurred */
	    dprintf("SSL_ERROR_SYSCALL");

	    if (backingError == 0 && err == 0) {
		dprintf("EOF reached")
		*errorCodePtr = ECONNRESET;
		Tls_Error(statePtr, "(unexpected) EOF reached");

	    } else if (backingError == 0 && err == -1) {
		dprintf("I/O error occurred (errno = %lu)", (unsigned long) Tcl_GetErrno());

		Tls_Error(statePtr, "EOF reached");
	    }    
#endif
	    break;

	case SSL_ERROR_SYSCALL:
	    /* Some non-recoverable, fatal I/O error occurred */

	    if (backingError == 0 && bytesRead == 0) {
		/* Unexpected EOF from the peer for OpenSSL 1.1 */
		dprintf("(Unexpected) EOF reached")
		*errorCodePtr = 0;
		bytesRead = 0;
		Tls_Error(statePtr, "EOF reached");

	    written = 0;
	    *errorCodePtr = 0;
	    Tls_Error(statePtr, "Peer has closed the connection for writing by sending the close_notify alert");
	    break;

	case SSL_ERROR_SYSCALL:
	    /* Some non-recoverable, fatal I/O error occurred */

	    if (backingError == 0 && written == 0) {
		dprintf("EOF reached")
		*errorCodePtr = 0;
		written = 0;
		Tls_Error(statePtr, "EOF reached");

	    } else if (backingError == 0 && written == -1) {

#ifndef CONST86
#   if TCL_MAJOR_VERSION > 8
#	define CONST86 const
#   else
#	define CONST86
#   endif
#endif

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



    #ifndef Tcl_Size
        typedef int Tcl_Size;
    #endif

    #define TCL_SIZE_MODIFIER ""



#endif

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

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);






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











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

#endif /* _TLSINT_H */

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

    if (astring != NULL) {
	len = String_to_Hex((unsigned char *)ASN1_STRING_get0_data(astring),
	    ASN1_STRING_length(astring), buffer, 1024);
    }
    resultPtr = Tcl_NewStringObj((char *) &buffer[0], (Tcl_Size) len);
    return resultPtr;
}

/*

    /* 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, (Tcl_Size) len);

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

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

    /* 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;

    LAPPEND_STR(interp, certPtr, "purpose", Tls_x509Purpose(cert), -1);
    LAPPEND_OBJ(interp, certPtr, "certificatePurpose", Tls_x509Purposes(interp, cert));

    /* Get extensions flags */
    xflags = X509_get_extension_flags(cert);
    LAPPEND_INT(interp, certPtr, "extFlags", xflags);

	/* Check if cert was issued by CA cert issuer or self signed */
    LAPPEND_BOOL(interp, certPtr, "selfIssued", xflags & EXFLAG_SI);
    LAPPEND_BOOL(interp, certPtr, "selfSigned", xflags & EXFLAG_SS);
    LAPPEND_BOOL(interp, certPtr, "isProxyCert", xflags & EXFLAG_PROXY);
    LAPPEND_BOOL(interp, certPtr, "extInvalid", xflags & EXFLAG_INVALID);
    LAPPEND_BOOL(interp, certPtr, "isCACert", X509_check_ca(cert));

    /* The Unique Ids are used to handle the possibility of reuse of subject
	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((const unsigned char *)iuid->data, (Tcl_Size) iuid->length));
	} else {
	    Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("", -1));
	}

    LAPPEND_INT(interp, certPtr, "extCount", X509_get_ext_count(cert));
    LAPPEND_OBJ(interp, certPtr, "extensions", Tls_x509Extensions(interp, cert));

    /* Authority Key Identifier (AKI) is the Subject Key Identifier (SKI) of
	its signer (the CA). RFC 5280 section 4.2.1.1, NID_authority_key_identifier */
    LAPPEND_OBJ(interp, certPtr, "authorityKeyIdentifier",
	Tls_x509Identifier(X509_get0_authority_key_id(cert)));

    /* Subject Key Identifier (SKI) is used to identify certificates that contain
	a particular public key. RFC 5280 section 4.2.1.2, NID_subject_key_identifier */
    LAPPEND_OBJ(interp, certPtr, "subjectKeyIdentifier",
	Tls_x509Identifier(X509_get0_subject_key_id(cert)));

    /* Key usage extension defines the purpose (e.g., encipherment, signature, certificate
	signing) of the key in the certificate. RFC 5280 section 4.2.1.3, NID_key_usage */

    /* Certificate Alias. If uses a PKCS#12 structure, alias will reflect the
	friendlyName attribute (RFC 2985). */
    {
	len = 0;
        unsigned char *string = X509_alias_get0(cert, &len);
	LAPPEND_STR(interp, certPtr, "alias", (char *) string, (Tcl_Size) len);
        string = X509_keyid_get0(cert, &len);
	LAPPEND_STR(interp, certPtr, "keyId", (char *) string, (Tcl_Size) len);
    }

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

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

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

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

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

#
# Run all tests in current and any sub directories with an all.tcl file.
#
set exitCode 0
if {[package vsatisfies [package require tcltest] 2.5-]} {
    if {[::tcltest::runAllTests] == 1} {
	set exitCode 1
    }

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

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

		if {$group ne $prev} {
		    incr test
		    set prev $group
		    puts $out ""
		}

		# Test case

		set buffer [format "\ntest %s-%d.%d {%s}" $group $test [incr cases($group)] $name]



		foreach opt [list -constraints -setup -body -cleanup -match -result -output -errorOutput -returnCodes] {
		    set cmd [string trim [set [string trimleft $opt "-"]]]
		    if {$cmd ne ""} {
			if {$opt in [list -setup -body -cleanup]} {
			    append buffer " " $opt " \{\n"
			    foreach line [split $cmd ";"] {
				append buffer \t [string trim $line] \n
			    }
			    append buffer "    \}"
			} elseif {$opt in [list -output -errorOutput]} {
			    append buffer " " $opt " {" $cmd \n "}"
			} elseif {$opt in [list -result]} {
			    if {[string index $cmd 0] in [list \[ \" \{]} {
				append buffer " " $opt " " $cmd
			    } elseif {[string match {*[\\$]*} $cmd]} {
				append buffer " " $opt " \"" [string map [list \\\\\" \\\"] [string map [list \" \\\" ] $cmd]] "\""
			    } else {
				append buffer " " $opt " {" $cmd "}"
			    }
			} else {
			    append buffer " " $opt " {" $cmd "}"
			}
		    }
		}
		puts $out $buffer

	    } else {
		# Empty line

	    }
	    break
	}
    }

    # Output clean-up commands
    puts $out "\n# Cleanup\n::tcltest::cleanupTests\nreturn"

# 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)\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





# 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