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Changes In Branch status_x509 Through [87010ba1d9] Excluding Merge-Ins

This is equivalent to a diff from dbe759a0f2 to 87010ba1d9

2023-09-01
21:57
Merged status and X509 updates branch into master check-in: 3432ab03a3 user: bohagan tags: trunk
2023-08-01
22:42
Added Certificate purposes to X509 status output. Corrected certificate alias get text bug. Refactored code to reduce number of variables and use common buffers for SHA fingerprints. check-in: e94d9cae93 user: bohagan tags: status_x509
2023-07-31
02:17
Added verify depth and mode status to connection status, renamed signatureType and signatureType check-in: 87010ba1d9 user: bohagan tags: status_x509
2023-07-30
22:25
Replaced custom X509 ASN1_UTCTIME_tostr function with OpenSSL function ASN1_TIME_print. Added catch errors returned from get certificate functions. check-in: b50520df51 user: bohagan tags: status_x509
03:39
Merged master into branch check-in: 739742d3d4 user: bohagan tags: status_x509
03:21
Merged errors_and_callbacks branch into master check-in: dbe759a0f2 user: bohagan tags: trunk
02:53
Updated default callbacks in tls.tcl file Leaf check-in: cdb51c799e user: bohagan tags: errors_and_callbacks
2023-07-16
15:05
Merge status and X509 updates branch check-in: 1924dcd361 user: bohagan tags: trunk

Modified doc/tls.html from [3c88bc4018] to [9494c1c42e].

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	<dt><strong>protocol</strong> <em>version</em></dt>
	<dd>The protocol version used for the connection:
	    SSL2, SSL3, TLS1, TLS1.1, TLS1.2, TLS1.3, or unknown.</dd>
	<dt><strong>sbits</strong> <em>n</em></dt>
	<dd>The number of bits used for the session key.</dd>
	<dt><strong>signatureHashAlgorithm</strong> <em>algorithm</em></dt>
	<dd>The signature hash algorithm.</dd>
	<dt><strong>signature_type</strong> <em>type</em></dt>
	<dt><strong>signatureType</strong> <em>type</em></dt>
	<dd>The signature type value.</dd>
	<dt><strong>verifyDepth</strong> <em>n</em></dt>
	<dd>Maximum depth for the certificate chain verification.
	    Default is -1, to check all.</dd>
	<dt><strong>verifyMode</strong> <em>list</em></dt>
	<dd>List of certificate verification modes.</dd>
	<dt><strong>verification</strong> <em>result</em></dt>
	<dt><strong>verifyResult</strong> <em>result</em></dt>
	<dd>Certificate verification result.</dd>
	<dt><strong>ca_names</strong> <em>list</em></dt>
	<dd>List of the Certificate Authorities used to create the certificate.</dd>
    </dl>
</blockquote>
<blockquote>
	<b>Certificate Status</b>
︙

Modified generic/tls.c from [b314eff29c] to [876a0b1ced].

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    ciphers = (char*)SSL_get_cipher(statePtr->ssl);
    if ((ciphers != NULL) && (strcmp(ciphers, "(NONE)") != 0)) {
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("cipher", -1));
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(ciphers, -1));
    }

    /* Verify the X509 certificate presented by the peer */
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("verification", -1));
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("verifyResult", -1));
    Tcl_ListObjAppendElement(interp, objPtr,
	Tcl_NewStringObj(X509_verify_cert_error_string(SSL_get_verify_result(statePtr->ssl)), -1));

    /* Verify mode */
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("verifyMode", -1));
    /* SSL_CTX_get_verify_mode(ctx) */
    mode = SSL_get_verify_mode(statePtr->ssl);
    if (mode && SSL_VERIFY_NONE) {
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("none", -1));
    } else {
	Tcl_Obj *listObjPtr = Tcl_NewListObj(0, NULL);
	if (mode && SSL_VERIFY_PEER) {
	    Tcl_ListObjAppendElement(interp, listObjPtr, Tcl_NewStringObj("peer", -1));
	}
	if (mode && SSL_VERIFY_FAIL_IF_NO_PEER_CERT) {
	    Tcl_ListObjAppendElement(interp, listObjPtr, Tcl_NewStringObj("fail if no peer cert", -1));
	}
	if (mode && SSL_VERIFY_CLIENT_ONCE) {
	    Tcl_ListObjAppendElement(interp, listObjPtr, Tcl_NewStringObj("client once", -1));
	}
	if (mode && SSL_VERIFY_POST_HANDSHAKE) {
	    Tcl_ListObjAppendElement(interp, listObjPtr, Tcl_NewStringObj("post handshake", -1));
	}
	Tcl_ListObjAppendElement(interp, objPtr, listObjPtr);
    }

    /* Verify mode depth */
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("verifyDepth", -1));
    /* SSL_CTX_get_verify_depth(ctx) */
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewIntObj(SSL_get_verify_depth(statePtr->ssl)));

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

    /* Valid for non-RSA signature and TLS 1.3 */
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("signatureHashAlgorithm", -1));
    if (objc == 2 ? SSL_get_peer_signature_nid(statePtr->ssl, &nid) : SSL_get_signature_nid(statePtr->ssl, &nid)) {
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(OBJ_nid2ln(nid), -1));
    } else {
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("", -1));
    }
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("signature_type", -1));
    Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("signatureType", -1));
    if (objc == 2 ? SSL_get_peer_signature_type_nid(statePtr->ssl, &nid) : SSL_get_signature_type_nid(statePtr->ssl, &nid)) {
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj(OBJ_nid2ln(nid), -1));
    } else {
	Tcl_ListObjAppendElement(interp, objPtr, Tcl_NewStringObj("", -1));
    }

    Tcl_SetObjResult(interp, objPtr);
︙

Modified generic/tlsX509.c from [4adcfb41ce] to [b50e8f8920].

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}

static int max(int a, int b)
{
    return (a > b) ? a : b;
}

/*
 * ASN1_UTCTIME_tostr --
 */
static char *
ASN1_UTCTIME_tostr(ASN1_UTCTIME *tm)
{
    static char bp[128];
    char *v;
    int gmt=0;
    static char *mon[12]={
        "Jan","Feb","Mar","Apr","May","Jun", "Jul","Aug","Sep","Oct","Nov","Dec"};
    int i;
    int y=0,M=0,d=0,h=0,m=0,s=0;

    i=tm->length;
    v=(char *)tm->data;

    if (i < 10) goto err;
    if (v[i-1] == 'Z') gmt=1;
    for (i=0; i<10; i++)
        if ((v[i] > '9') || (v[i] < '0')) goto err;
    y= (v[0]-'0')*10+(v[1]-'0');
    if (y < 70) y+=100;
    M= (v[2]-'0')*10+(v[3]-'0');
    if ((M > 12) || (M < 1)) goto err;
    d= (v[4]-'0')*10+(v[5]-'0');
    h= (v[6]-'0')*10+(v[7]-'0');
    m=  (v[8]-'0')*10+(v[9]-'0');
    if ((v[10] >= '0') && (v[10] <= '9') && (v[11] >= '0') && (v[11] <= '9'))
        s=  (v[10]-'0')*10+(v[11]-'0');

    sprintf(bp,"%s %2d %02d:%02d:%02d %d%s", mon[M-1],d,h,m,s,y+1900,(gmt)?" GMT":"");
    return bp;
 err:
    return "Bad time value";
}

/*
 * Binary string to hex string
 */
int String_to_Hex(char* input, int len, char *output, int max) {
    int count = 0;

    for (int i = 0; i < len && count < max - 1; i++, count += 2) {
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 *
 *	Tls_NewX509Obj --
 *
 *	------------------------------------------------*
 *	Converts a X509 certificate into a Tcl_Obj
 *	------------------------------------------------*
 *
 *	Sideeffects:
 *	Side effects:
 *		None
 *
 *	Result:
 *		A Tcl List Object representing the provided
 *		X509 certificate.
 *
 *------------------------------------------------------*
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    int certStr_len, toRead;
    unsigned char sha1_hash_binary[SHA_DIGEST_LENGTH];
    unsigned char sha256_hash_binary[SHA256_DIGEST_LENGTH];
    int nid, pknid, bits, num_of_exts, len;
    uint32_t xflags;
    STACK_OF(GENERAL_NAME) *san;

    certStr[0] = 0;
    certStr[0]   = 0;
    if ((bio = BIO_new(BIO_s_mem())) == NULL) {
	subject[0] = 0;
	issuer[0]  = 0;
	serial[0]  = 0;
    } else {
    subject[0]   = 0;
    issuer[0]    = 0;
    serial[0]    = 0;
    notBefore[0] = 0;
    notAfter[0]  = 0;
    if ((bio = BIO_new(BIO_s_mem())) != NULL) {
	flags = XN_FLAG_RFC2253 | ASN1_STRFLGS_UTF8_CONVERT;
	flags &= ~ASN1_STRFLGS_ESC_MSB;

	/* Get subject name */
	X509_NAME_print_ex(bio, X509_get_subject_name(cert), 0, flags);
	n = BIO_read(bio, subject, min(BIO_pending(bio), BUFSIZ - 1));
	if (X509_NAME_print_ex(bio, X509_get_subject_name(cert), 0, flags) > 0) {
	    n = BIO_read(bio, subject, min(BIO_pending(bio), BUFSIZ - 1));
	n = max(n, 0);
	subject[n] = 0;
	(void)BIO_flush(bio);

	X509_NAME_print_ex(bio, X509_get_issuer_name(cert), 0, flags);
	n = BIO_read(bio, issuer, min(BIO_pending(bio), BUFSIZ - 1));
	n = max(n, 0);
	    subject[max(n, 0)] = 0;
	    (void)BIO_flush(bio);
	}

	/* Get issuer name */
	if (X509_NAME_print_ex(bio, X509_get_issuer_name(cert), 0, flags) > 0) {
	    n = BIO_read(bio, issuer, min(BIO_pending(bio), BUFSIZ - 1));
	    issuer[max(n, 0)] = 0;
	issuer[n] = 0;
	(void)BIO_flush(bio);

	i2a_ASN1_INTEGER(bio, X509_get0_serialNumber(cert));
	n = BIO_read(bio, serial, min(BIO_pending(bio), BUFSIZ - 1));
	n = max(n, 0);
	    (void)BIO_flush(bio);
	}

	/* Get serial number */
	if (i2a_ASN1_INTEGER(bio, X509_get0_serialNumber(cert)) > 0) {
	    n = BIO_read(bio, serial, min(BIO_pending(bio), BUFSIZ - 1));
	    serial[max(n, 0)] = 0;
	serial[n] = 0;
	(void)BIO_flush(bio);
	    (void)BIO_flush(bio);
	}

        /* Get certificate */
        if (PEM_write_bio_X509(bio, cert)) {
            certStr_p = certStr;
            certStr_len = 0;
            while (1) {
                toRead = min(BIO_pending(bio), CERT_STR_SIZE - certStr_len - 1);
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                certStr_len += n;
                certStr_p   += n;
            }
            *certStr_p = '\0';
            (void)BIO_flush(bio);
        }

	/* All */
	/* Get all cert info */
	if (X509_print_ex(bio, cert, flags, 0)) {
	    char all[65536];
	    n = BIO_read(bio, all, min(BIO_pending(bio), 65535));
	    n = max(n, 0);
	    all[max(n, 0)] = 0;
	    all[n] = 0;
	    (void)BIO_flush(bio);
	    Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("all", -1));
	    Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj(all, n));
	}

	/* Get Validity - Not Before */
	if (ASN1_TIME_print(bio, X509_get_notBefore(cert))) {
	    n = BIO_read(bio, notBefore, min(BIO_pending(bio), BUFSIZ - 1));
	    notBefore[max(n, 0)] = 0;
	    (void)BIO_flush(bio);
	}

	/* Get Validity - Not After */
	if (ASN1_TIME_print(bio, X509_get_notAfter(cert))) {
	    n = BIO_read(bio, notAfter, min(BIO_pending(bio), BUFSIZ - 1));
	    notAfter[max(n, 0)] = 0;
	    (void)BIO_flush(bio);
	}

	BIO_free(bio);
    }

    strcpy(notBefore, ASN1_UTCTIME_tostr(X509_get0_notBefore(cert)));
    strcpy(notAfter, ASN1_UTCTIME_tostr(X509_get0_notAfter(cert)));

    /* Version */
    Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("version", -1));
    Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewLongObj(X509_get_version(cert)+1));

    /* Signature algorithm */
    Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("signature", -1));
    Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj(OBJ_nid2ln(X509_get_signature_nid(cert)),-1));
 

    /* SHA1 Fingerprint of cert - DER representation */
    X509_digest(cert, EVP_sha1(), sha1_hash_binary, &len);
    len = String_to_Hex(sha1_hash_binary, len, buffer, BUFSIZ);
    Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("sha1_hash", -1));
    Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj(buffer, len));

    /* SHA256 Fingerprint of cert - DER representation */
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	Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj(OBJ_nid2ln(nid),-1));
	Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("publicKeyAlgorithm", -1));
	Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj(OBJ_nid2ln(pknid),-1));
	Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("bits", -1));
	Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewIntObj(bits));
	Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("extension_flags", -1));
	Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewIntObj(xflags));
	

	/* Public key - X509_get0_pubkey */
	key = X509_get0_pubkey_bitstr(cert);
	len = String_to_Hex(key->data, key->length, buffer, BUFSIZ);
	Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("publicKey", -1));
	Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj(buffer, len));
	

	/* Check if cert was issued by CA cert issuer or self signed */
	Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewStringObj("self_signed", -1));
	Tcl_ListObjAppendElement(interp, certPtr, Tcl_NewBooleanObj(X509_check_issued(cert, cert) == X509_V_OK));
    }

    /* Unique Ids */
    {
︙

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