Update OpenSSL to 1.0.1g and statically link OpenVPN with it

7 files changed, 488 insertions, 22 deletions

diff --git a/main/openssl/crypto/engine/eng_all.c b/main/openssl/crypto/engine/eng_all.c
index 22c12045..6093376d 100644
--- a/main/openssl/crypto/engine/eng_all.c
+++ b/main/openssl/crypto/engine/eng_all.c
@@ -61,6 +61,8 @@
 
 void ENGINE_load_builtin_engines(void)
 	{
+	/* Some ENGINEs need this */
+	OPENSSL_cpuid_setup();
 #if 0
 	/* There's no longer any need for an "openssl" ENGINE unless, one day,
 	 * it is the *only* way for standard builtin implementations to be be
@@ -71,6 +73,12 @@ void ENGINE_load_builtin_engines(void)
 #if !defined(OPENSSL_NO_HW) && (defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV))
 	ENGINE_load_cryptodev();
 #endif
+#ifndef OPENSSL_NO_RSAX
+	ENGINE_load_rsax();
+#endif
+#ifndef OPENSSL_NO_RDRAND
+	ENGINE_load_rdrand();
+#endif
 	ENGINE_load_dynamic();
 #ifndef OPENSSL_NO_STATIC_ENGINE
 #ifndef OPENSSL_NO_HW
@@ -112,6 +120,7 @@ void ENGINE_load_builtin_engines(void)
 	ENGINE_load_capi();
 #endif
 #endif
+	ENGINE_register_all_complete();
 	}
 
 #if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV)
diff --git a/main/openssl/crypto/engine/eng_cryptodev.c b/main/openssl/crypto/engine/eng_cryptodev.c
index 52f4ca39..5a715aca 100644
--- a/main/openssl/crypto/engine/eng_cryptodev.c
+++ b/main/openssl/crypto/engine/eng_cryptodev.c
@@ -79,8 +79,6 @@ struct dev_crypto_state {
 	unsigned char digest_res[HASH_MAX_LEN];
 	char *mac_data;
 	int mac_len;
-
-	int copy;
 #endif
 };
 
@@ -200,6 +198,7 @@ get_dev_crypto(void)
 
 	if ((fd = open_dev_crypto()) == -1)
 		return (-1);
+#ifndef CRIOGET_NOT_NEEDED
 	if (ioctl(fd, CRIOGET, &retfd) == -1)
 		return (-1);
 
@@ -208,9 +207,19 @@ get_dev_crypto(void)
 		close(retfd);
 		return (-1);
 	}
+#else
+        retfd = fd;
+#endif
 	return (retfd);
 }
 
+static void put_dev_crypto(int fd)
+{
+#ifndef CRIOGET_NOT_NEEDED
+	close(fd);
+#endif
+}
+
 /* Caching version for asym operations */
 static int
 get_asym_dev_crypto(void)
@@ -252,7 +261,7 @@ get_cryptodev_ciphers(const int **cnids)
 		    ioctl(fd, CIOCFSESSION, &sess.ses) != -1)
 			nids[count++] = ciphers[i].nid;
 	}
-	close(fd);
+	put_dev_crypto(fd);
 
 	if (count > 0)
 		*cnids = nids;
@@ -291,7 +300,7 @@ get_cryptodev_digests(const int **cnids)
 		    ioctl(fd, CIOCFSESSION, &sess.ses) != -1)
 			nids[count++] = digests[i].nid;
 	}
-	close(fd);
+	put_dev_crypto(fd);
 
 	if (count > 0)
 		*cnids = nids;
@@ -436,7 +445,7 @@ cryptodev_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 	sess->cipher = cipher;
 
 	if (ioctl(state->d_fd, CIOCGSESSION, sess) == -1) {
-		close(state->d_fd);
+		put_dev_crypto(state->d_fd);
 		state->d_fd = -1;
 		return (0);
 	}
@@ -473,7 +482,7 @@ cryptodev_cleanup(EVP_CIPHER_CTX *ctx)
 	} else {
 		ret = 1;
 	}
-	close(state->d_fd);
+	put_dev_crypto(state->d_fd);
 	state->d_fd = -1;
 
 	return (ret);
@@ -686,7 +695,7 @@ static int cryptodev_digest_init(EVP_MD_CTX *ctx)
 	sess->mac = digest;
 
 	if (ioctl(state->d_fd, CIOCGSESSION, sess) < 0) {
-		close(state->d_fd);
+		put_dev_crypto(state->d_fd);
 		state->d_fd = -1;
 		printf("cryptodev_digest_init: Open session failed\n");
 		return (0);
@@ -758,14 +767,12 @@ static int cryptodev_digest_final(EVP_MD_CTX *ctx, unsigned char *md)
 	if (! (ctx->flags & EVP_MD_CTX_FLAG_ONESHOT) ) {
 		/* if application doesn't support one buffer */
 		memset(&cryp, 0, sizeof(cryp));
-
 		cryp.ses = sess->ses;
 		cryp.flags = 0;
 		cryp.len = state->mac_len;
 		cryp.src = state->mac_data;
 		cryp.dst = NULL;
 		cryp.mac = (caddr_t)md;
-
 		if (ioctl(state->d_fd, CIOCCRYPT, &cryp) < 0) {
 			printf("cryptodev_digest_final: digest failed\n");
 			return (0);
@@ -786,6 +793,9 @@ static int cryptodev_digest_cleanup(EVP_MD_CTX *ctx)
 	struct dev_crypto_state *state = ctx->md_data;
 	struct session_op *sess = &state->d_sess;
 
+	if (state == NULL)
+	  return 0;
+
 	if (state->d_fd < 0) {
 		printf("cryptodev_digest_cleanup: illegal input\n");
 		return (0);
@@ -797,16 +807,13 @@ static int cryptodev_digest_cleanup(EVP_MD_CTX *ctx)
 		state->mac_len = 0;
 	}
 
-	if (state->copy)
-		return 1;
-
 	if (ioctl(state->d_fd, CIOCFSESSION, &sess->ses) < 0) {
 		printf("cryptodev_digest_cleanup: failed to close session\n");
 		ret = 0;
 	} else {
 		ret = 1;
 	}
-	close(state->d_fd);	
+	put_dev_crypto(state->d_fd);	
 	state->d_fd = -1;
 
 	return (ret);
@@ -816,15 +823,39 @@ static int cryptodev_digest_copy(EVP_MD_CTX *to,const EVP_MD_CTX *from)
 {
 	struct dev_crypto_state *fstate = from->md_data;
 	struct dev_crypto_state *dstate = to->md_data;
+	struct session_op *sess;
+	int digest;
 
-	memcpy(dstate, fstate, sizeof(struct dev_crypto_state));
+	if (dstate == NULL || fstate == NULL)
+	  return 1;
 
-	if (fstate->mac_len != 0) {
-		dstate->mac_data = OPENSSL_malloc(fstate->mac_len);
-		memcpy(dstate->mac_data, fstate->mac_data, fstate->mac_len);
+       	memcpy(dstate, fstate, sizeof(struct dev_crypto_state));
+
+	sess = &dstate->d_sess;
+
+	digest = digest_nid_to_cryptodev(to->digest->type);
+
+	sess->mackey = dstate->dummy_mac_key;
+	sess->mackeylen = digest_key_length(to->digest->type);
+	sess->mac = digest;
+
+	dstate->d_fd = get_dev_crypto();
+
+	if (ioctl(dstate->d_fd, CIOCGSESSION, sess) < 0) {
+		put_dev_crypto(dstate->d_fd);
+		dstate->d_fd = -1;
+		printf("cryptodev_digest_init: Open session failed\n");
+		return (0);
 	}
 
-	dstate->copy = 1;
+	if (fstate->mac_len != 0) {
+	        if (fstate->mac_data != NULL)
+	                {
+        		dstate->mac_data = OPENSSL_malloc(fstate->mac_len);
+	        	memcpy(dstate->mac_data, fstate->mac_data, fstate->mac_len);
+           		dstate->mac_len = fstate->mac_len;
+	        	}
+	}
 
 	return 1;
 }
@@ -1347,11 +1378,11 @@ ENGINE_load_cryptodev(void)
 	 * find out what asymmetric crypto algorithms we support
 	 */
 	if (ioctl(fd, CIOCASYMFEAT, &cryptodev_asymfeat) == -1) {
-		close(fd);
+		put_dev_crypto(fd);
 		ENGINE_free(engine);
 		return;
 	}
-	close(fd);
+	put_dev_crypto(fd);
 
 	if (!ENGINE_set_id(engine, "cryptodev") ||
 	    !ENGINE_set_name(engine, "BSD cryptodev engine") ||
diff --git a/main/openssl/crypto/engine/eng_dyn.c b/main/openssl/crypto/engine/eng_dyn.c
index 807da7a5..8fb8634e 100644
--- a/main/openssl/crypto/engine/eng_dyn.c
+++ b/main/openssl/crypto/engine/eng_dyn.c
@@ -408,7 +408,7 @@ static int int_load(dynamic_data_ctx *ctx)
 	int num, loop;
 	/* Unless told not to, try a direct load */
 	if((ctx->dir_load != 2) && (DSO_load(ctx->dynamic_dso,
-				ctx->DYNAMIC_LIBNAME, NULL, 0)) != NULL)
+				ctx->DYNAMIC_LIBNAME, NULL, 0) != NULL))
 		return 1;
 	/* If we're not allowed to use 'dirs' or we have none, fail */
 	if(!ctx->dir_load || (num = sk_OPENSSL_STRING_num(ctx->dirs)) < 1)
@@ -423,6 +423,9 @@ static int int_load(dynamic_data_ctx *ctx)
 			{
 			/* Found what we're looking for */
 			OPENSSL_free(merge);
+			/* Previous failed loop iterations, if any, will have resulted in
+			 * errors. Clear them out before returning success. */
+			ERR_clear_error();
 			return 1;
 			}
 		OPENSSL_free(merge);
diff --git a/main/openssl/crypto/engine/eng_fat.c b/main/openssl/crypto/engine/eng_fat.c
index db66e623..789b8d57 100644
--- a/main/openssl/crypto/engine/eng_fat.c
+++ b/main/openssl/crypto/engine/eng_fat.c
@@ -176,6 +176,7 @@ int ENGINE_register_all_complete(void)
 	ENGINE *e;
 
 	for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
-		ENGINE_register_complete(e);
+		if (!(e->flags & ENGINE_FLAGS_NO_REGISTER_ALL))
+			ENGINE_register_complete(e);
 	return 1;
 	}
diff --git a/main/openssl/crypto/engine/engine.h b/main/openssl/crypto/engine/engine.h
index 943aeae2..f8be4977 100644
--- a/main/openssl/crypto/engine/engine.h
+++ b/main/openssl/crypto/engine/engine.h
@@ -141,6 +141,13 @@ extern "C" {
  * the existing ENGINE's structural reference count. */
 #define ENGINE_FLAGS_BY_ID_COPY		(int)0x0004
 
+/* This flag if for an ENGINE that does not want its methods registered as 
+ * part of ENGINE_register_all_complete() for example if the methods are
+ * not usable as default methods.
+ */
+
+#define ENGINE_FLAGS_NO_REGISTER_ALL	(int)0x0008
+
 /* ENGINEs can support their own command types, and these flags are used in
  * ENGINE_CTRL_GET_CMD_FLAGS to indicate to the caller what kind of input each
  * command expects. Currently only numeric and string input is supported. If a
@@ -344,6 +351,8 @@ void ENGINE_load_gost(void);
 #endif
 #endif
 void ENGINE_load_cryptodev(void);
+void ENGINE_load_rsax(void);
+void ENGINE_load_rdrand(void);
 void ENGINE_load_builtin_engines(void);
 
 /* Get and set global flags (ENGINE_TABLE_FLAG_***) for the implementation
diff --git a/main/openssl/crypto/engine/tb_asnmth.c b/main/openssl/crypto/engine/tb_asnmth.c
new file mode 100644
index 00000000..75090339
--- /dev/null
+++ b/main/openssl/crypto/engine/tb_asnmth.c
@@ -0,0 +1,246 @@
+/* ====================================================================
+ * Copyright (c) 2006 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 "eng_int.h"
+#include "asn1_locl.h"
+#include <openssl/evp.h>
+
+/* If this symbol is defined then ENGINE_get_pkey_asn1_meth_engine(), the
+ * function that is used by EVP to hook in pkey_asn1_meth code and cache
+ * defaults (etc), will display brief debugging summaries to stderr with the
+ * 'nid'. */
+/* #define ENGINE_PKEY_ASN1_METH_DEBUG */
+
+static ENGINE_TABLE *pkey_asn1_meth_table = NULL;
+
+void ENGINE_unregister_pkey_asn1_meths(ENGINE *e)
+	{
+	engine_table_unregister(&pkey_asn1_meth_table, e);
+	}
+
+static void engine_unregister_all_pkey_asn1_meths(void)
+	{
+	engine_table_cleanup(&pkey_asn1_meth_table);
+	}
+
+int ENGINE_register_pkey_asn1_meths(ENGINE *e)
+	{
+	if(e->pkey_asn1_meths)
+		{
+		const int *nids;
+		int num_nids = e->pkey_asn1_meths(e, NULL, &nids, 0);
+		if(num_nids > 0)
+			return engine_table_register(&pkey_asn1_meth_table,
+				engine_unregister_all_pkey_asn1_meths, e, nids,
+					num_nids, 0);
+		}
+	return 1;
+	}
+
+void ENGINE_register_all_pkey_asn1_meths(void)
+	{
+	ENGINE *e;
+
+	for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
+		ENGINE_register_pkey_asn1_meths(e);
+	}
+
+int ENGINE_set_default_pkey_asn1_meths(ENGINE *e)
+	{
+	if(e->pkey_asn1_meths)
+		{
+		const int *nids;
+		int num_nids = e->pkey_asn1_meths(e, NULL, &nids, 0);
+		if(num_nids > 0)
+			return engine_table_register(&pkey_asn1_meth_table,
+				engine_unregister_all_pkey_asn1_meths, e, nids,
+					num_nids, 1);
+		}
+	return 1;
+	}
+
+/* Exposed API function to get a functional reference from the implementation
+ * table (ie. try to get a functional reference from the tabled structural
+ * references) for a given pkey_asn1_meth 'nid' */
+ENGINE *ENGINE_get_pkey_asn1_meth_engine(int nid)
+	{
+	return engine_table_select(&pkey_asn1_meth_table, nid);
+	}
+
+/* Obtains a pkey_asn1_meth implementation from an ENGINE functional reference */
+const EVP_PKEY_ASN1_METHOD *ENGINE_get_pkey_asn1_meth(ENGINE *e, int nid)
+	{
+	EVP_PKEY_ASN1_METHOD *ret;
+	ENGINE_PKEY_ASN1_METHS_PTR fn = ENGINE_get_pkey_asn1_meths(e);
+	if(!fn || !fn(e, &ret, NULL, nid))
+		{
+		ENGINEerr(ENGINE_F_ENGINE_GET_PKEY_ASN1_METH,
+				ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD);
+		return NULL;
+		}
+	return ret;
+	}
+
+/* Gets the pkey_asn1_meth callback from an ENGINE structure */
+ENGINE_PKEY_ASN1_METHS_PTR ENGINE_get_pkey_asn1_meths(const ENGINE *e)
+	{
+	return e->pkey_asn1_meths;
+	}
+
+/* Sets the pkey_asn1_meth callback in an ENGINE structure */
+int ENGINE_set_pkey_asn1_meths(ENGINE *e, ENGINE_PKEY_ASN1_METHS_PTR f)
+	{
+	e->pkey_asn1_meths = f;
+	return 1;
+	}
+
+/* Internal function to free up EVP_PKEY_ASN1_METHOD structures before an
+ * ENGINE is destroyed
+ */
+
+void engine_pkey_asn1_meths_free(ENGINE *e)
+	{
+	int i;
+	EVP_PKEY_ASN1_METHOD *pkm;
+	if (e->pkey_asn1_meths)
+		{
+		const int *pknids;
+		int npknids;
+		npknids = e->pkey_asn1_meths(e, NULL, &pknids, 0);
+		for (i = 0; i < npknids; i++)
+			{
+			if (e->pkey_asn1_meths(e, &pkm, NULL, pknids[i]))
+				{
+				EVP_PKEY_asn1_free(pkm);
+				}
+			}
+		}
+	}
+
+/* Find a method based on a string. This does a linear search through
+ * all implemented algorithms. This is OK in practice because only
+ * a small number of algorithms are likely to be implemented in an engine
+ * and it is not used for speed critical operations.
+ */
+
+const EVP_PKEY_ASN1_METHOD *ENGINE_get_pkey_asn1_meth_str(ENGINE *e,
+					const char *str, int len)
+	{
+	int i, nidcount;
+	const int *nids;
+	EVP_PKEY_ASN1_METHOD *ameth;
+	if (!e->pkey_asn1_meths)
+		return NULL;
+	if (len == -1)
+		len = strlen(str);
+	nidcount = e->pkey_asn1_meths(e, NULL, &nids, 0);
+	for (i = 0; i < nidcount; i++)
+		{
+		e->pkey_asn1_meths(e, &ameth, NULL, nids[i]);
+		if (((int)strlen(ameth->pem_str) == len) && 
+					!strncasecmp(ameth->pem_str, str, len))
+			return ameth;
+		}
+	return NULL;
+	}
+
+typedef struct 
+	{
+	ENGINE *e;
+	const EVP_PKEY_ASN1_METHOD *ameth;
+	const char *str;
+	int len;
+	} ENGINE_FIND_STR;
+
+static void look_str_cb(int nid, STACK_OF(ENGINE) *sk, ENGINE *def, void *arg)
+	{
+	ENGINE_FIND_STR *lk = arg;
+	int i;
+	if (lk->ameth)
+		return;
+	for (i = 0; i < sk_ENGINE_num(sk); i++)
+		{
+		ENGINE *e = sk_ENGINE_value(sk, i);
+		EVP_PKEY_ASN1_METHOD *ameth;
+		e->pkey_asn1_meths(e, &ameth, NULL, nid);
+		if (((int)strlen(ameth->pem_str) == lk->len) && 
+				!strncasecmp(ameth->pem_str, lk->str, lk->len))
+			{
+			lk->e = e;
+			lk->ameth = ameth;
+			return;
+			}
+		}
+	}
+
+const EVP_PKEY_ASN1_METHOD *ENGINE_pkey_asn1_find_str(ENGINE **pe,
+					const char *str, int len)
+	{
+	ENGINE_FIND_STR fstr;
+	fstr.e = NULL;
+	fstr.ameth = NULL;
+	fstr.str = str;
+	fstr.len = len;
+	CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);
+	engine_table_doall(pkey_asn1_meth_table, look_str_cb, &fstr);
+	/* If found obtain a structural reference to engine */
+	if (fstr.e)
+		{
+		fstr.e->struct_ref++;
+		engine_ref_debug(fstr.e, 0, 1)
+		}
+	*pe = fstr.e;
+	CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);
+	return fstr.ameth;
+	}
diff --git a/main/openssl/crypto/engine/tb_pkmeth.c b/main/openssl/crypto/engine/tb_pkmeth.c
new file mode 100644
index 00000000..1cdb967f
--- /dev/null
+++ b/main/openssl/crypto/engine/tb_pkmeth.c
@@ -0,0 +1,167 @@
+/* ====================================================================
+ * Copyright (c) 2006 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 "eng_int.h"
+#include <openssl/evp.h>
+
+/* If this symbol is defined then ENGINE_get_pkey_meth_engine(), the function
+ * that is used by EVP to hook in pkey_meth code and cache defaults (etc), will
+ * display brief debugging summaries to stderr with the 'nid'. */
+/* #define ENGINE_PKEY_METH_DEBUG */
+
+static ENGINE_TABLE *pkey_meth_table = NULL;
+
+void ENGINE_unregister_pkey_meths(ENGINE *e)
+	{
+	engine_table_unregister(&pkey_meth_table, e);
+	}
+
+static void engine_unregister_all_pkey_meths(void)
+	{
+	engine_table_cleanup(&pkey_meth_table);
+	}
+
+int ENGINE_register_pkey_meths(ENGINE *e)
+	{
+	if(e->pkey_meths)
+		{
+		const int *nids;
+		int num_nids = e->pkey_meths(e, NULL, &nids, 0);
+		if(num_nids > 0)
+			return engine_table_register(&pkey_meth_table,
+				engine_unregister_all_pkey_meths, e, nids,
+					num_nids, 0);
+		}
+	return 1;
+	}
+
+void ENGINE_register_all_pkey_meths()
+	{
+	ENGINE *e;
+
+	for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
+		ENGINE_register_pkey_meths(e);
+	}
+
+int ENGINE_set_default_pkey_meths(ENGINE *e)
+	{
+	if(e->pkey_meths)
+		{
+		const int *nids;
+		int num_nids = e->pkey_meths(e, NULL, &nids, 0);
+		if(num_nids > 0)
+			return engine_table_register(&pkey_meth_table,
+				engine_unregister_all_pkey_meths, e, nids,
+					num_nids, 1);
+		}
+	return 1;
+	}
+
+/* Exposed API function to get a functional reference from the implementation
+ * table (ie. try to get a functional reference from the tabled structural
+ * references) for a given pkey_meth 'nid' */
+ENGINE *ENGINE_get_pkey_meth_engine(int nid)
+	{
+	return engine_table_select(&pkey_meth_table, nid);
+	}
+
+/* Obtains a pkey_meth implementation from an ENGINE functional reference */
+const EVP_PKEY_METHOD *ENGINE_get_pkey_meth(ENGINE *e, int nid)
+	{
+	EVP_PKEY_METHOD *ret;
+	ENGINE_PKEY_METHS_PTR fn = ENGINE_get_pkey_meths(e);
+	if(!fn || !fn(e, &ret, NULL, nid))
+		{
+		ENGINEerr(ENGINE_F_ENGINE_GET_PKEY_METH,
+				ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD);
+		return NULL;
+		}
+	return ret;
+	}
+
+/* Gets the pkey_meth callback from an ENGINE structure */
+ENGINE_PKEY_METHS_PTR ENGINE_get_pkey_meths(const ENGINE *e)
+	{
+	return e->pkey_meths;
+	}
+
+/* Sets the pkey_meth callback in an ENGINE structure */
+int ENGINE_set_pkey_meths(ENGINE *e, ENGINE_PKEY_METHS_PTR f)
+	{
+	e->pkey_meths = f;
+	return 1;
+	}
+
+/* Internal function to free up EVP_PKEY_METHOD structures before an
+ * ENGINE is destroyed
+ */
+
+void engine_pkey_meths_free(ENGINE *e)
+	{
+	int i;
+	EVP_PKEY_METHOD *pkm;
+	if (e->pkey_meths)
+		{
+		const int *pknids;
+		int npknids;
+		npknids = e->pkey_meths(e, NULL, &pknids, 0);
+		for (i = 0; i < npknids; i++)
+			{
+			if (e->pkey_meths(e, &pkm, NULL, pknids[i]))
+				{
+				EVP_PKEY_meth_free(pkm);
+				}
+			}
+		}
+	}