Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/ocsp/ocsp_vfy.c

Index: openssl/crypto/ocsp/ocsp_vfy.c
diff --git a/openssl/crypto/ocsp/ocsp_vfy.c b/openssl/crypto/ocsp/ocsp_vfy.c
deleted file mode 100644
index 276718304dd211d4be989fb750d8c95ff792feff..0000000000000000000000000000000000000000
--- a/openssl/crypto/ocsp/ocsp_vfy.c
+++ /dev/null
@@ -1,450 +0,0 @@
-/* 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;
-	}