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Comment:Add support for ASN1 blobs for certificates and keys
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SHA3-256: 49278969f25b2e653fa8e1a266650d2276761f8bada32a273565c7953102a221
User & Date: mjanssen on 2019-06-17 12:05:26
Other Links: branch diff | manifest | tags
Context
2019-06-17
14:27
Do not expose implementation details in user interface check-in: ef0be0d731 user: mjanssen tags: mjanssen-asn1-certs
12:05
Add support for ASN1 blobs for certificates and keys check-in: 49278969f2 user: mjanssen tags: mjanssen-asn1-certs
2019-04-12
16:58
Better handling of shared/static naming issues check-in: 2c8d3629bc user: rkeene tags: trunk
Changes
Side-by-Side Diff Ignore Whitespace Patch
Modified tclOpts.h from [aff9aa3b9c] to [1a6cf1121d].
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#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 */
Modified tls.c from [c565bf20f1] to [8332b7761d].
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static int	MiscObjCmd(ClientData clientData,
			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]);

static int	UnimportObjCmd(ClientData clientData,
			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]);

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

static int	TlsLibInit(int uninitialize);

#define TLS_PROTO_SSL2		0x01
#define TLS_PROTO_SSL3		0x02
#define TLS_PROTO_TLS1		0x04
#define TLS_PROTO_TLS1_1	0x08
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    ClientData clientData;	/* Not used. */
    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;
    SSL_CTX *ctx	        = NULL;
    Tcl_Obj *script	        = NULL;
    Tcl_Obj *password	        = NULL;
    Tcl_DString upperChannelTranslation, upperChannelBlocking, upperChannelEncoding, upperChannelEOFChar;
    int idx, len;
    int flags		= TLS_TCL_INIT;
    int server		= 0;	/* is connection incoming or outgoing? */
    char *key		= NULL;
    char *cert		= NULL;
    char *ciphers	= NULL;
    char *CAfile	= NULL;
    char *CAdir		= NULL;
    char *DHparams	= NULL;
    char *model		= NULL;
    int flags		        = TLS_TCL_INIT;
    int server		        = 0;	/* is connection incoming or outgoing? */
    char *key		        = NULL;
    char *cert		        = NULL;
    unsigned char *key_asn1	= NULL;
    int key_asn1_len            = 0;
    unsigned char *cert_asn1	= NULL;
    int cert_asn1_len           = 0;
    char *ciphers	        = NULL;
    char *CAfile	        = NULL;
    char *CAdir		        = NULL;
    char *DHparams	        = NULL;
    char *model		        = NULL;
#ifndef OPENSSL_NO_TLSEXT
    char *servername	= NULL;	/* hostname for Server Name Indication */
    char *servername	        = NULL;	/* hostname for Server Name Indication */
#endif
    int ssl2 = 0, ssl3 = 0;
    int tls1 = 1, tls1_1 = 1, tls1_2 = 1, tls1_3 = 1;
    int proto = 0;
    int verify = 0, require = 0, request = 1;

    dprintf("Called");
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	OPTBOOL( "-ssl2", ssl2);
	OPTBOOL( "-ssl3", ssl3);
	OPTBOOL( "-tls1", tls1);
	OPTBOOL( "-tls1.1", tls1_1);
	OPTBOOL( "-tls1.2", tls1_2);
	OPTBOOL( "-tls1.3", tls1_3);

  OPTBYTE("-certasn1", cert_asn1, cert_asn1_len);
  OPTBYTE("-keyasn1", key_asn1, key_asn1_len);

	OPTBAD( "option", "-cadir, -cafile, -certfile, -cipher, -command, -dhparams, -keyfile, -model, -password, -require, -request, -server, -servername, -ssl2, -ssl3, -tls1, -tls1.1, -tls1.2, or tls1.3");
	OPTBAD( "option", "-cadir, -cafile, -certasn1, -certfile, -cipher, -command, -dhparams, -keyasn1, -keyfile, -model, -password, -require, -request, -server, -servername, -ssl2, -ssl3, -tls1, -tls1.1, -tls1.2, or tls1.3");

	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);
    proto |= (tls1_3 ? TLS_PROTO_TLS1_3 : 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;
    if (DHparams && !*DHparams)	DHparams = NULL;
    if (cert && !*cert)		        cert	        = NULL;
    if (key && !*key)		        key	        = NULL;
    if (cert_asn1 && !*cert_asn1)	cert_asn1	= NULL;
    if (key_asn1 && !*key_asn1)		key_asn1	= NULL;
    if (ciphers && !*ciphers)	        ciphers	        = NULL;
    if (CAfile && !*CAfile)	        CAfile	        = NULL;
    if (CAdir && !*CAdir)	        CAdir	        = NULL;
    if (DHparams && !*DHparams)	        DHparams        = NULL;

    /* new SSL state */
    statePtr		= (State *) ckalloc((unsigned) sizeof(State));
    memset(statePtr, 0, sizeof(State));

    statePtr->flags	= flags;
    statePtr->interp	= interp;
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	    Tcl_AppendResult(interp, "bad channel \"",
		    Tcl_GetChannelName(chan), "\": not a TLS channel", NULL);
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
	ctx = ((State *)Tcl_GetChannelInstanceData(chan))->ctx;
    } else {
	if ((ctx = CTX_Init(statePtr, server, proto, key, cert, CAdir, CAfile, ciphers,
		DHparams)) == (SSL_CTX*)0) {
	if ((ctx = CTX_Init(statePtr, server, proto, key, cert, key_asn1,
    cert_asn1, key_asn1_len, cert_asn1_len, CAdir, CAfile, ciphers,
    DHparams)) == (SSL_CTX*)0) {
	    Tls_Free((char *) statePtr);
	    return TCL_ERROR;
	}
    }

    statePtr->ctx = ctx;
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 * Side effects:
 *	constructs SSL context (CTX)
 *
 *-------------------------------------------------------------------
 */

static SSL_CTX *
CTX_Init(statePtr, isServer, proto, key, cert, CAdir, CAfile, ciphers, DHparams)
CTX_Init(statePtr, isServer, proto, key, cert, key_asn1, cert_asn1,
         key_asn1_len, cert_asn1_len, CAdir, CAfile, ciphers, DHparams)
    State *statePtr;
    int isServer;
    int proto;
    char *key;
    char *cert;
    unsigned char *key_asn1;
    unsigned char *cert_asn1;
    int key_asn1_len;
    int cert_asn1_len;
    char *CAdir;
    char *CAfile;
    char *ciphers;
    char *DHparams;
{
    Tcl_Interp *interp = statePtr->interp;
    SSL_CTX *ctx = NULL;
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	 * the SSL context */
	if (!SSL_CTX_check_private_key(ctx)) {
	    Tcl_AppendResult(interp,
			     "private key does not match the certificate public key",
			     (char *) NULL);
	    SSL_CTX_free(ctx);
	    return (SSL_CTX *)0;
	}
    } else if (cert_asn1 != NULL) {
	if (SSL_CTX_use_certificate_ASN1(ctx, cert_asn1_len, cert_asn1) <= 0) {
	    Tcl_DStringFree(&ds);
	    Tcl_AppendResult(interp,
			     "unable to set certificate from ASN1: ",
			     REASON(), (char *) NULL);
	    SSL_CTX_free(ctx);
	    return (SSL_CTX *)0;
	}
	if (key_asn1 == NULL) {
    key_asn1=cert_asn1;
    key_asn1_len = cert_asn1_len;
  }
	if (SSL_CTX_use_PrivateKey_ASN1(EVP_PKEY_RSA, ctx, key_asn1,key_asn1_len) <= 0) {
	    Tcl_DStringFree(&ds);
	    /* flush the passphrase which might be left in the result */
	    Tcl_SetResult(interp, NULL, TCL_STATIC);
	    Tcl_AppendResult(interp,
			     "unable to set public key from ASN1: ",
			     REASON(), (char *) NULL);
	    SSL_CTX_free(ctx);
	    return (SSL_CTX *)0;
	}
    } else {
	cert = (char*)X509_get_default_cert_file();

	if (SSL_CTX_use_certificate_file(ctx, cert,
					SSL_FILETYPE_PEM) <= 0) {
#if 0
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Modified tls.tcl from [75c0c2a68a] to [bc6c1405ca].
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    variable socketOptionRules {
        {0 -async sopts 0}
        {* -myaddr sopts 1}
        {0 -myport sopts 1}
        {* -type sopts 1}
        {* -cadir iopts 1}
        {* -cafile iopts 1}
        {* -certasn1 iopts 1}
        {* -certfile iopts 1}
        {* -cipher iopts 1}
        {* -command iopts 1}
        {* -dhparams iopts 1}
        {* -keyasn1 iopts 1}
        {* -keyfile iopts 1}
        {* -password iopts 1}
        {* -request iopts 1}
        {* -require iopts 1}
        {* -autoservername discardOpts 1}
        {* -servername iopts 1}
        {* -ssl2 iopts 1}
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