Small Issues & Maintenance

-=-=-=-=-=-=-=-=-=-=-=-=-=

-Begin work on Navigation Meshes (simple pathfinding for now, will improve soon)
-More doc on theme overriding
-Upgraded OpenSSL to version without bugs
-Misc bugfixes

1 files changed, 450 insertions, 0 deletions

diff --git a/drivers/builtin_openssl2/crypto/ocsp/ocsp_vfy.c b/drivers/builtin_openssl2/crypto/ocsp/ocsp_vfy.c
new file mode 100644
index 0000000000..276718304d
--- /dev/null
+++ b/drivers/builtin_openssl2/crypto/ocsp/ocsp_vfy.c
@@ -0,0 +1,450 @@
+/* ocsp_vfy.c */
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000-2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <openssl/ocsp.h>
+#include <openssl/err.h>
+#include <string.h>
+
+static int ocsp_find_signer(X509 **psigner, OCSP_BASICRESP *bs, STACK_OF(X509) *certs,
+				X509_STORE *st, unsigned long flags);
+static X509 *ocsp_find_signer_sk(STACK_OF(X509) *certs, OCSP_RESPID *id);
+static int ocsp_check_issuer(OCSP_BASICRESP *bs, STACK_OF(X509) *chain, unsigned long flags);
+static int ocsp_check_ids(STACK_OF(OCSP_SINGLERESP) *sresp, OCSP_CERTID **ret);
+static int ocsp_match_issuerid(X509 *cert, OCSP_CERTID *cid, STACK_OF(OCSP_SINGLERESP) *sresp);
+static int ocsp_check_delegated(X509 *x, int flags);
+static int ocsp_req_find_signer(X509 **psigner, OCSP_REQUEST *req, X509_NAME *nm, STACK_OF(X509) *certs,
+				X509_STORE *st, unsigned long flags);
+
+/* Verify a basic response message */
+
+int OCSP_basic_verify(OCSP_BASICRESP *bs, STACK_OF(X509) *certs,
+				X509_STORE *st, unsigned long flags)
+	{
+	X509 *signer, *x;
+	STACK_OF(X509) *chain = NULL;
+	X509_STORE_CTX ctx;
+	int i, ret = 0;
+	ret = ocsp_find_signer(&signer, bs, certs, st, flags);
+	if (!ret)
+		{
+		OCSPerr(OCSP_F_OCSP_BASIC_VERIFY, OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND);
+		goto end;
+		}
+	if ((ret == 2) && (flags & OCSP_TRUSTOTHER))
+		flags |= OCSP_NOVERIFY;
+	if (!(flags & OCSP_NOSIGS))
+		{
+		EVP_PKEY *skey;
+		skey = X509_get_pubkey(signer);
+		if (skey)
+			{
+			ret = OCSP_BASICRESP_verify(bs, skey, 0);
+			EVP_PKEY_free(skey);
+			}
+		if(!skey || ret <= 0)
+			{
+			OCSPerr(OCSP_F_OCSP_BASIC_VERIFY, OCSP_R_SIGNATURE_FAILURE);
+			goto end;
+			}
+		}
+	if (!(flags & OCSP_NOVERIFY))
+		{
+		int init_res;
+		if(flags & OCSP_NOCHAIN)
+			init_res = X509_STORE_CTX_init(&ctx, st, signer, NULL);
+		else
+			init_res = X509_STORE_CTX_init(&ctx, st, signer, bs->certs);
+		if(!init_res)
+			{
+			ret = -1;
+			OCSPerr(OCSP_F_OCSP_BASIC_VERIFY,ERR_R_X509_LIB);
+			goto end;
+			}
+
+		X509_STORE_CTX_set_purpose(&ctx, X509_PURPOSE_OCSP_HELPER);
+		ret = X509_verify_cert(&ctx);
+		chain = X509_STORE_CTX_get1_chain(&ctx);
+		X509_STORE_CTX_cleanup(&ctx);
+                if (ret <= 0)
+			{
+			i = X509_STORE_CTX_get_error(&ctx);	
+			OCSPerr(OCSP_F_OCSP_BASIC_VERIFY,OCSP_R_CERTIFICATE_VERIFY_ERROR);
+			ERR_add_error_data(2, "Verify error:",
+					X509_verify_cert_error_string(i));
+                        goto end;
+                	}
+		if(flags & OCSP_NOCHECKS)
+			{
+			ret = 1;
+			goto end;
+			}
+		/* At this point we have a valid certificate chain
+		 * need to verify it against the OCSP issuer criteria.
+		 */
+		ret = ocsp_check_issuer(bs, chain, flags);
+
+		/* If fatal error or valid match then finish */
+		if (ret != 0) goto end;
+
+		/* Easy case: explicitly trusted. Get root CA and
+		 * check for explicit trust
+		 */
+		if(flags & OCSP_NOEXPLICIT) goto end;
+
+		x = sk_X509_value(chain, sk_X509_num(chain) - 1);
+		if(X509_check_trust(x, NID_OCSP_sign, 0) != X509_TRUST_TRUSTED)
+			{
+			OCSPerr(OCSP_F_OCSP_BASIC_VERIFY,OCSP_R_ROOT_CA_NOT_TRUSTED);
+			goto end;
+			}
+		ret = 1;
+		}
+
+
+
+	end:
+	if(chain) sk_X509_pop_free(chain, X509_free);
+	return ret;
+	}
+
+
+static int ocsp_find_signer(X509 **psigner, OCSP_BASICRESP *bs, STACK_OF(X509) *certs,
+				X509_STORE *st, unsigned long flags)
+	{
+	X509 *signer;
+	OCSP_RESPID *rid = bs->tbsResponseData->responderId;
+	if ((signer = ocsp_find_signer_sk(certs, rid)))
+		{
+		*psigner = signer;
+		return 2;
+		}
+	if(!(flags & OCSP_NOINTERN) &&
+	    (signer = ocsp_find_signer_sk(bs->certs, rid)))
+		{
+		*psigner = signer;
+		return 1;
+		}
+	/* Maybe lookup from store if by subject name */
+
+	*psigner = NULL;
+	return 0;
+	}
+
+
+static X509 *ocsp_find_signer_sk(STACK_OF(X509) *certs, OCSP_RESPID *id)
+	{
+	int i;
+	unsigned char tmphash[SHA_DIGEST_LENGTH], *keyhash;
+	X509 *x;
+
+	/* Easy if lookup by name */
+	if (id->type == V_OCSP_RESPID_NAME)
+		return X509_find_by_subject(certs, id->value.byName);
+
+	/* Lookup by key hash */
+
+	/* If key hash isn't SHA1 length then forget it */
+	if (id->value.byKey->length != SHA_DIGEST_LENGTH) return NULL;
+	keyhash = id->value.byKey->data;
+	/* Calculate hash of each key and compare */
+	for (i = 0; i < sk_X509_num(certs); i++)
+		{
+		x = sk_X509_value(certs, i);
+		X509_pubkey_digest(x, EVP_sha1(), tmphash, NULL);
+		if(!memcmp(keyhash, tmphash, SHA_DIGEST_LENGTH))
+			return x;
+		}
+	return NULL;
+	}
+
+
+static int ocsp_check_issuer(OCSP_BASICRESP *bs, STACK_OF(X509) *chain, unsigned long flags)
+	{
+	STACK_OF(OCSP_SINGLERESP) *sresp;
+	X509 *signer, *sca;
+	OCSP_CERTID *caid = NULL;
+	int i;
+	sresp = bs->tbsResponseData->responses;
+
+	if (sk_X509_num(chain) <= 0)
+		{
+		OCSPerr(OCSP_F_OCSP_CHECK_ISSUER, OCSP_R_NO_CERTIFICATES_IN_CHAIN);
+		return -1;
+		}
+
+	/* See if the issuer IDs match. */
+	i = ocsp_check_ids(sresp, &caid);
+
+	/* If ID mismatch or other error then return */
+	if (i <= 0) return i;
+
+	signer = sk_X509_value(chain, 0);
+	/* Check to see if OCSP responder CA matches request CA */
+	if (sk_X509_num(chain) > 1)
+		{
+		sca = sk_X509_value(chain, 1);
+		i = ocsp_match_issuerid(sca, caid, sresp);
+		if (i < 0) return i;
+		if (i)
+			{
+			/* We have a match, if extensions OK then success */
+			if (ocsp_check_delegated(signer, flags)) return 1;
+			return 0;
+			}
+		}
+
+	/* Otherwise check if OCSP request signed directly by request CA */
+	return ocsp_match_issuerid(signer, caid, sresp);
+	}
+
+
+/* Check the issuer certificate IDs for equality. If there is a mismatch with the same
+ * algorithm then there's no point trying to match any certificates against the issuer.
+ * If the issuer IDs all match then we just need to check equality against one of them.
+ */
+	
+static int ocsp_check_ids(STACK_OF(OCSP_SINGLERESP) *sresp, OCSP_CERTID **ret)
+	{
+	OCSP_CERTID *tmpid, *cid;
+	int i, idcount;
+
+	idcount = sk_OCSP_SINGLERESP_num(sresp);
+	if (idcount <= 0)
+		{
+		OCSPerr(OCSP_F_OCSP_CHECK_IDS, OCSP_R_RESPONSE_CONTAINS_NO_REVOCATION_DATA);
+		return -1;
+		}
+
+	cid = sk_OCSP_SINGLERESP_value(sresp, 0)->certId;
+
+	*ret = NULL;
+
+	for (i = 1; i < idcount; i++)
+		{
+		tmpid = sk_OCSP_SINGLERESP_value(sresp, i)->certId;
+		/* Check to see if IDs match */
+		if (OCSP_id_issuer_cmp(cid, tmpid))
+			{
+			/* If algoritm mismatch let caller deal with it */
+			if (OBJ_cmp(tmpid->hashAlgorithm->algorithm,
+					cid->hashAlgorithm->algorithm))
+					return 2;
+			/* Else mismatch */
+			return 0;
+			}
+		}
+
+	/* All IDs match: only need to check one ID */
+	*ret = cid;
+	return 1;
+	}
+
+
+static int ocsp_match_issuerid(X509 *cert, OCSP_CERTID *cid,
+			STACK_OF(OCSP_SINGLERESP) *sresp)
+	{
+	/* If only one ID to match then do it */
+	if(cid)
+		{
+		const EVP_MD *dgst;
+		X509_NAME *iname;
+		int mdlen;
+		unsigned char md[EVP_MAX_MD_SIZE];
+		if (!(dgst = EVP_get_digestbyobj(cid->hashAlgorithm->algorithm)))
+			{
+			OCSPerr(OCSP_F_OCSP_MATCH_ISSUERID, OCSP_R_UNKNOWN_MESSAGE_DIGEST);
+			return -1;
+			}
+
+		mdlen = EVP_MD_size(dgst);
+		if (mdlen < 0)
+		    return -1;
+		if ((cid->issuerNameHash->length != mdlen) ||
+		   (cid->issuerKeyHash->length != mdlen))
+			return 0;
+		iname = X509_get_subject_name(cert);
+		if (!X509_NAME_digest(iname, dgst, md, NULL))
+			return -1;
+		if (memcmp(md, cid->issuerNameHash->data, mdlen))
+			return 0;
+		X509_pubkey_digest(cert, dgst, md, NULL);
+		if (memcmp(md, cid->issuerKeyHash->data, mdlen))
+			return 0;
+
+		return 1;
+
+		}
+	else
+		{
+		/* We have to match the whole lot */
+		int i, ret;
+		OCSP_CERTID *tmpid;
+		for (i = 0; i < sk_OCSP_SINGLERESP_num(sresp); i++)
+			{
+			tmpid = sk_OCSP_SINGLERESP_value(sresp, i)->certId;
+			ret = ocsp_match_issuerid(cert, tmpid, NULL);
+			if (ret <= 0) return ret;
+			}
+		return 1;
+		}
+			
+	}
+
+static int ocsp_check_delegated(X509 *x, int flags)
+	{
+	X509_check_purpose(x, -1, 0);
+	if ((x->ex_flags & EXFLAG_XKUSAGE) &&
+	    (x->ex_xkusage & XKU_OCSP_SIGN))
+		return 1;
+	OCSPerr(OCSP_F_OCSP_CHECK_DELEGATED, OCSP_R_MISSING_OCSPSIGNING_USAGE);
+	return 0;
+	}
+
+/* Verify an OCSP request. This is fortunately much easier than OCSP
+ * response verify. Just find the signers certificate and verify it
+ * against a given trust value.
+ */
+
+int OCSP_request_verify(OCSP_REQUEST *req, STACK_OF(X509) *certs, X509_STORE *store, unsigned long flags)
+        {
+	X509 *signer;
+	X509_NAME *nm;
+	GENERAL_NAME *gen;
+	int ret;
+	X509_STORE_CTX ctx;
+	if (!req->optionalSignature) 
+		{
+		OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, OCSP_R_REQUEST_NOT_SIGNED);
+		return 0;
+		}
+	gen = req->tbsRequest->requestorName;
+	if (!gen || gen->type != GEN_DIRNAME)
+		{
+		OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, OCSP_R_UNSUPPORTED_REQUESTORNAME_TYPE);
+		return 0;
+		}
+	nm = gen->d.directoryName;
+	ret = ocsp_req_find_signer(&signer, req, nm, certs, store, flags);
+	if (ret <= 0)
+		{
+		OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND);
+		return 0;
+		}
+	if ((ret == 2) && (flags & OCSP_TRUSTOTHER))
+		flags |= OCSP_NOVERIFY;
+	if (!(flags & OCSP_NOSIGS))
+		{
+		EVP_PKEY *skey;
+		skey = X509_get_pubkey(signer);
+		ret = OCSP_REQUEST_verify(req, skey);
+		EVP_PKEY_free(skey);
+		if(ret <= 0)
+			{
+			OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY, OCSP_R_SIGNATURE_FAILURE);
+			return 0;
+			}
+		}
+	if (!(flags & OCSP_NOVERIFY))
+		{
+		int init_res;
+		if(flags & OCSP_NOCHAIN)
+			init_res = X509_STORE_CTX_init(&ctx, store, signer, NULL);
+		else
+			init_res = X509_STORE_CTX_init(&ctx, store, signer,
+					req->optionalSignature->certs);
+		if(!init_res)
+			{
+			OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY,ERR_R_X509_LIB);
+			return 0;
+			}
+
+		X509_STORE_CTX_set_purpose(&ctx, X509_PURPOSE_OCSP_HELPER);
+		X509_STORE_CTX_set_trust(&ctx, X509_TRUST_OCSP_REQUEST);
+		ret = X509_verify_cert(&ctx);
+		X509_STORE_CTX_cleanup(&ctx);
+                if (ret <= 0)
+			{
+			ret = X509_STORE_CTX_get_error(&ctx);	
+			OCSPerr(OCSP_F_OCSP_REQUEST_VERIFY,OCSP_R_CERTIFICATE_VERIFY_ERROR);
+			ERR_add_error_data(2, "Verify error:",
+					X509_verify_cert_error_string(ret));
+                        return 0;
+                	}
+		}
+	return 1;
+        }
+
+static int ocsp_req_find_signer(X509 **psigner, OCSP_REQUEST *req, X509_NAME *nm, STACK_OF(X509) *certs,
+				X509_STORE *st, unsigned long flags)
+	{
+	X509 *signer;
+	if(!(flags & OCSP_NOINTERN))
+		{
+		signer = X509_find_by_subject(req->optionalSignature->certs, nm);
+		*psigner = signer;
+		return 1;
+		}
+
+	signer = X509_find_by_subject(certs, nm);
+	if (signer)
+		{
+		*psigner = signer;
+		return 2;
+		}
+	return 0;
+	}