Diff
Bounty program for improvements to Tcl and certain Tcl packages.

Differences From Artifact [34519f36fc]:

To Artifact [343f6572a7]:


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/*
 * Copyright (C) 1997-1999 Matt Newman <[email protected]>
 * some modifications:
 *	Copyright (C) 2000 Ajuba Solutions
 *	Copyright (C) 2002 ActiveState Corporation
 *	Copyright (C) 2004 Starfish Systems 
 *
 * $Header: /home/rkeene/tmp/cvs2fossil/../tcltls/tls/tls/tls.c,v 1.34 2014/04/16 18:33:03 andreas_kupries Exp $
 *
 * TLS (aka SSL) Channel - can be layered on any bi-directional
 * Tcl_Channel (Note: Requires Trf Core Patch)
 *
 * This was built (almost) from scratch based upon observation of
 * OpenSSL 0.9.2B
 *






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/*
 * Copyright (C) 1997-1999 Matt Newman <[email protected]>
 * some modifications:
 *	Copyright (C) 2000 Ajuba Solutions
 *	Copyright (C) 2002 ActiveState Corporation
 *	Copyright (C) 2004 Starfish Systems 
 *
 * $Header: /home/rkeene/tmp/cvs2fossil/../tcltls/tls/tls/tls.c,v 1.35 2014/12/08 19:09:06 andreas_kupries Exp $
 *
 * TLS (aka SSL) Channel - can be layered on any bi-directional
 * Tcl_Channel (Note: Requires Trf Core Patch)
 *
 * This was built (almost) from scratch based upon observation of
 * OpenSSL 0.9.2B
 *
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			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));

static SSL_CTX *CTX_Init _ANSI_ARGS_((State *statePtr, int proto, char *key,
			char *cert, char *CAdir, char *CAfile, char *ciphers));

static int	TlsLibInit _ANSI_ARGS_ (()) ;

#define TLS_PROTO_SSL2	0x01
#define TLS_PROTO_SSL3	0x02
#define TLS_PROTO_TLS1	0x04


#define ENABLED(flag, mask)	(((flag) & (mask)) == (mask))

/*
 * Static data structures
 */

#ifndef NO_DH






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			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));

static SSL_CTX *CTX_Init _ANSI_ARGS_((State *statePtr, int proto, char *key,
			char *cert, char *CAdir, char *CAfile, char *ciphers));

static int	TlsLibInit _ANSI_ARGS_ (()) ;

#define TLS_PROTO_SSL2		0x01
#define TLS_PROTO_SSL3		0x02
#define TLS_PROTO_TLS1		0x04
#define TLS_PROTO_TLS1_1	0x08
#define TLS_PROTO_TLS1_2	0x10
#define ENABLED(flag, mask)	(((flag) & (mask)) == (mask))

/*
 * Static data structures
 */

#ifndef NO_DH
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CiphersObjCmd(clientData, interp, objc, objv)
    ClientData clientData;	/* Not used. */
    Tcl_Interp *interp;
    int objc;
    Tcl_Obj	*CONST objv[];
{
    static CONST84 char *protocols[] = {
	"ssl2",	"ssl3",	"tls1",	NULL
    };
    enum protocol {
	TLS_SSL2, TLS_SSL3, TLS_TLS1, TLS_NONE
    };
    Tcl_Obj *objPtr;
    SSL_CTX *ctx = NULL;
    SSL *ssl = NULL;
    STACK_OF(SSL_CIPHER) *sk;
    char *cp, buf[BUFSIZ];
    int index, verbose = 0;






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CiphersObjCmd(clientData, interp, objc, objv)
    ClientData clientData;	/* Not used. */
    Tcl_Interp *interp;
    int objc;
    Tcl_Obj	*CONST objv[];
{
    static CONST84 char *protocols[] = {
	"ssl2",	"ssl3",	"tls1",	"tls1.1", "tls1.2", NULL
    };
    enum protocol {
	TLS_SSL2, TLS_SSL3, TLS_TLS1, TLS_TLS1_1, TLS_TLS1_2, TLS_NONE
    };
    Tcl_Obj *objPtr;
    SSL_CTX *ctx = NULL;
    SSL *ssl = NULL;
    STACK_OF(SSL_CIPHER) *sk;
    char *cp, buf[BUFSIZ];
    int index, verbose = 0;
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    case TLS_TLS1:
#if defined(NO_TLS1)
		Tcl_AppendResult(interp, "protocol not supported", NULL);
		return TCL_ERROR;
#else
		ctx = SSL_CTX_new(TLSv1_method()); break;
#endif














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






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    case TLS_TLS1:
#if defined(NO_TLS1)
		Tcl_AppendResult(interp, "protocol not supported", NULL);
		return TCL_ERROR;
#else
		ctx = SSL_CTX_new(TLSv1_method()); break;
#endif
    case TLS_TLS1_1:
#if defined(NO_TLS1_1)
		Tcl_AppendResult(interp, "protocol not supported", NULL);
		return TCL_ERROR;
#else
		ctx = SSL_CTX_new(TLSv1_1_method()); break;
#endif
    case TLS_TLS1_2:
#if defined(NO_TLS1_2)
		Tcl_AppendResult(interp, "protocol not supported", NULL);
		return TCL_ERROR;
#else
		ctx = SSL_CTX_new(TLSv1_2_method()); break;
#endif
    default:
		break;
    }
    if (ctx == NULL) {
	Tcl_AppendResult(interp, REASON(), (char *) NULL);
	return TCL_ERROR;
    }
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    int server		= 0;	/* is connection incoming or outgoing? */
    char *key		= NULL;
    char *cert		= NULL;
    char *ciphers	= NULL;
    char *CAfile	= NULL;
    char *CAdir		= NULL;
    char *model		= NULL;



#if defined(NO_SSL2)
    int ssl2 = 0;
#else
    int ssl2 = 1;
#endif
#if defined(NO_SSL3)
    int ssl3 = 0;
#else
    int ssl3 = 1;
#endif
#if defined(NO_SSL2) && defined(NO_SSL3)
    int tls1 = 1;
#else
    int tls1 = 0;
#endif
    int proto = 0;
    int verify = 0, require = 0, request = 1;

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channel ?options?");
	return TCL_ERROR;
    }






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    int server		= 0;	/* is connection incoming or outgoing? */
    char *key		= NULL;
    char *cert		= NULL;
    char *ciphers	= NULL;
    char *CAfile	= NULL;
    char *CAdir		= NULL;
    char *model		= NULL;
#ifndef OPENSSL_NO_TLSEXT
    char *servername	= NULL;	/* hostname for Server Name Indication */
#endif
#if defined(NO_SSL2)
    int ssl2 = 0;
#else
    int ssl2 = 1;
#endif
#if defined(NO_SSL3)
    int ssl3 = 0;
#else
    int ssl3 = 1;
#endif

    int tls1 = 1;
    int tls1_1 = 1;
    int tls1_2 = 1;

    int proto = 0;
    int verify = 0, require = 0, request = 1;

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channel ?options?");
	return TCL_ERROR;
    }
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	OPTOBJ( "-command", script);
	OPTSTR( "-keyfile", key);
	OPTSTR( "-model", model);
	OPTOBJ( "-password", password);
	OPTBOOL( "-require", require);
	OPTBOOL( "-request", request);
	OPTBOOL( "-server", server);




	OPTBOOL( "-ssl2", ssl2);
	OPTBOOL( "-ssl3", ssl3);
	OPTBOOL( "-tls1", tls1);



	OPTBAD( "option", "-cadir, -cafile, -certfile, -cipher, -command, -keyfile, -model, -password, -require, -request, -server, -ssl2, -ssl3, or -tls1");

	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 (verify == 0)	verify = SSL_VERIFY_NONE;

    proto |= (ssl2 ? TLS_PROTO_SSL2 : 0);
    proto |= (ssl3 ? TLS_PROTO_SSL3 : 0);
    proto |= (tls1 ? TLS_PROTO_TLS1 : 0);



    /* reset to NULL if blank string provided */
    if (cert && !*cert)		cert	= NULL;
    if (key && !*key)		key	= NULL;
    if (ciphers && !*ciphers)	ciphers	= NULL;
    if (CAfile && !*CAfile)	CAfile	= NULL;
    if (CAdir && !*CAdir)	CAdir	= NULL;






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	OPTOBJ( "-command", script);
	OPTSTR( "-keyfile", key);
	OPTSTR( "-model", model);
	OPTOBJ( "-password", password);
	OPTBOOL( "-require", require);
	OPTBOOL( "-request", request);
	OPTBOOL( "-server", server);
#ifndef OPENSSL_NO_TLSEXT
        OPTSTR( "-servername", servername);
#endif

	OPTBOOL( "-ssl2", ssl2);
	OPTBOOL( "-ssl3", ssl3);
	OPTBOOL( "-tls1", tls1);
	OPTBOOL( "-tls1.1", tls1_1);
	OPTBOOL( "-tls1.2", tls1_2);

	OPTBAD( "option", "-cadir, -cafile, -certfile, -cipher, -command, -keyfile, -model, -password, -require, -request, -server, -servername, -ssl2, -ssl3, -tls1, -tls1.1 or -tls1.2");

	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 (verify == 0)	verify = SSL_VERIFY_NONE;

    proto |= (ssl2 ? TLS_PROTO_SSL2 : 0);
    proto |= (ssl3 ? TLS_PROTO_SSL3 : 0);
    proto |= (tls1 ? TLS_PROTO_TLS1 : 0);
    proto |= (tls1_1 ? TLS_PROTO_TLS1_1 : 0);
    proto |= (tls1_2 ? TLS_PROTO_TLS1_2 : 0);

    /* reset to NULL if blank string provided */
    if (cert && !*cert)		cert	= NULL;
    if (key && !*key)		key	= NULL;
    if (ciphers && !*ciphers)	ciphers	= NULL;
    if (CAfile && !*CAfile)	CAfile	= NULL;
    if (CAdir && !*CAdir)	CAdir	= NULL;
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    if (!statePtr->ssl) {
	/* SSL library error */
	Tcl_AppendResult(interp, "couldn't construct ssl session: ", REASON(),
		(char *) NULL);
	Tls_Free((char *) statePtr);
	return TCL_ERROR;
    }












    /*
     * SSL Callbacks
     */

    SSL_set_app_data(statePtr->ssl, (VOID *)statePtr);	/* point back to us */







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    if (!statePtr->ssl) {
	/* SSL library error */
	Tcl_AppendResult(interp, "couldn't construct ssl session: ", REASON(),
		(char *) NULL);
	Tls_Free((char *) statePtr);
	return TCL_ERROR;
    }

#ifndef OPENSSL_NO_TLSEXT
    if (servername) {
        if (!SSL_set_tlsext_host_name(statePtr->ssl, servername) && require) {
            Tcl_AppendResult(interp, "setting TLS host name extension failed",
                (char *) NULL);
            Tls_Free((char *) statePtr);
            return TCL_ERROR;
        }
    }
#endif

    /*
     * SSL Callbacks
     */

    SSL_set_app_data(statePtr->ssl, (VOID *)statePtr);	/* point back to us */

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    char *ciphers;
{
    Tcl_Interp *interp = statePtr->interp;
    SSL_CTX *ctx = NULL;
    Tcl_DString ds;
    Tcl_DString ds1;
    int off = 0;


    /* create SSL context */
#if !defined(NO_SSL2) && !defined(NO_SSL3)
    if (ENABLED(proto, TLS_PROTO_SSL2) &&
	ENABLED(proto, TLS_PROTO_SSL3)) {
	ctx = SSL_CTX_new(SSLv23_method());
    } else
#endif
    if (ENABLED(proto, TLS_PROTO_SSL2)) {
#if defined(NO_SSL2)
	Tcl_AppendResult(interp, "protocol not supported", NULL);
	return (SSL_CTX *)0;
#else
	ctx = SSL_CTX_new(SSLv2_method());
#endif
    } else if (ENABLED(proto, TLS_PROTO_TLS1)) {
	ctx = SSL_CTX_new(TLSv1_method());
    } else if (ENABLED(proto, TLS_PROTO_SSL3)) {
#if defined(NO_SSL3)
	Tcl_AppendResult(interp, "protocol not supported", NULL);
	return (SSL_CTX *)0;
#else
	ctx = SSL_CTX_new(SSLv3_method());
#endif
    } else {
	Tcl_AppendResult(interp, "no valid protocol selected", NULL);
	return (SSL_CTX *)0;
    }
    off |= (ENABLED(proto, TLS_PROTO_TLS1) ? 0 : SSL_OP_NO_TLSv1);
    off |= (ENABLED(proto, TLS_PROTO_SSL2) ? 0 : SSL_OP_NO_SSLv2);
    off |= (ENABLED(proto, TLS_PROTO_SSL3) ? 0 : SSL_OP_NO_SSLv3);

















































































    SSL_CTX_set_app_data( ctx, (VOID*)interp);	/* remember the interpreter */
    SSL_CTX_set_options( ctx, SSL_OP_ALL);	/* all SSL bug workarounds */
    SSL_CTX_set_options( ctx, off);	/* all SSL bug workarounds */
    SSL_CTX_sess_set_cache_size( ctx, 128);

    if (ciphers != NULL)
	SSL_CTX_set_cipher_list(ctx, ciphers);






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    char *ciphers;
{
    Tcl_Interp *interp = statePtr->interp;
    SSL_CTX *ctx = NULL;
    Tcl_DString ds;
    Tcl_DString ds1;
    int off = 0;
    const SSL_METHOD *method;







    if (!proto) {

















	Tcl_AppendResult(interp, "no valid protocol selected", NULL);
	return (SSL_CTX *)0;
    }




    /* create SSL context */
#if defined(NO_SSL2)
    if (ENABLED(proto, TLS_PROTO_SSL2)) {
	Tcl_AppendResult(interp, "protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif
#if defined(NO_SSL3)
    if (ENABLED(proto, TLS_PROTO_SSL3)) {
	Tcl_AppendResult(interp, "protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif
#if defined(NO_TLS1)
    if (ENABLED(proto, TLS_PROTO_TLS1)) {
	Tcl_AppendResult(interp, "protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif
#if defined(NO_TLS1_1)
    if (ENABLED(proto, TLS_PROTO_TLS1_1)) {
	Tcl_AppendResult(interp, "protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif
#if defined(NO_TLS1_2)
    if (ENABLED(proto, TLS_PROTO_TLS1_2)) {
	Tcl_AppendResult(interp, "protocol not supported", NULL);
	return (SSL_CTX *)0;
    }
#endif

    switch (proto) {
#if !defined(NO_SSL2)
    case TLS_PROTO_SSL2:
	method = SSLv2_method ();
	break;
#endif
#if !defined(NO_SSL3)
    case TLS_PROTO_SSL3:
	method = SSLv3_method ();
	break;
#endif
#if !defined(NO_TLS1)
    case TLS_PROTO_TLS1:
	method = TLSv1_method ();
	break;
#endif
#if !defined(NO_TLS1_1)
    case TLS_PROTO_TLS1_1:
	method = TLSv1_1_method ();
	break;
#endif
#if !defined(NO_TLS1_2)
    case TLS_PROTO_TLS1_2:
	method = TLSv1_2_method ();
	break;
#endif
    default:
        method = SSLv23_method ();
#if !defined(NO_SSL2)
	off |= (ENABLED(proto, TLS_PROTO_SSL2)   ? 0 : SSL_OP_NO_SSLv2);
#endif
#if !defined(NO_SSL3)
	off |= (ENABLED(proto, TLS_PROTO_SSL3)   ? 0 : SSL_OP_NO_SSLv3);
#endif
#if !defined(NO_TLS1)
	off |= (ENABLED(proto, TLS_PROTO_TLS1)   ? 0 : SSL_OP_NO_TLSv1);
#endif
#if !defined(NO_TLS1_1)
	off |= (ENABLED(proto, TLS_PROTO_TLS1_1) ? 0 : SSL_OP_NO_TLSv1_1);
#endif
#if !defined(NO_TLS1_2)
	off |= (ENABLED(proto, TLS_PROTO_TLS1_2) ? 0 : SSL_OP_NO_TLSv1_2);
#endif
	break;
    }

    ctx = SSL_CTX_new (method);
    
    SSL_CTX_set_app_data( ctx, (VOID*)interp);	/* remember the interpreter */
    SSL_CTX_set_options( ctx, SSL_OP_ALL);	/* all SSL bug workarounds */
    SSL_CTX_set_options( ctx, off);	/* all SSL bug workarounds */
    SSL_CTX_sess_set_cache_size( ctx, 128);

    if (ciphers != NULL)
	SSL_CTX_set_cipher_list(ctx, ciphers);