Update copyright year

[openssl.git] / crypto / dh / dh_lib.c

diff --git a/crypto/dh/dh_lib.c b/crypto/dh/dh_lib.c
index 8645b6728e779020e0b03a181afd97ae46c03d38..e4252251922f18d4eac7cc2f379763cf19c01fb1 100644 (file)
--- a/crypto/dh/dh_lib.c
+++ b/crypto/dh/dh_lib.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -9,24 +9,11 @@
 
 #include <stdio.h>
 #include "internal/cryptlib.h"
+#include "internal/refcount.h"
 #include <openssl/bn.h>
 #include "dh_locl.h"
 #include <openssl/engine.h>
 
-static const DH_METHOD *default_DH_method = NULL;
-
-void DH_set_default_method(const DH_METHOD *meth)
-{
-    default_DH_method = meth;
-}
-
-const DH_METHOD *DH_get_default_method(void)
-{
-    if (!default_DH_method)
-        default_DH_method = DH_OpenSSL();
-    return default_DH_method;
-}
-
 int DH_set_method(DH *dh, const DH_METHOD *meth)
 {
     /*
@@ -64,6 +51,7 @@ DH *DH_new_method(ENGINE *engine)
     ret->references = 1;
     ret->lock = CRYPTO_THREAD_lock_new();
     if (ret->lock == NULL) {
+        DHerr(DH_F_DH_NEW_METHOD, ERR_R_MALLOC_FAILURE);
         OPENSSL_free(ret);
         return NULL;
     }
@@ -110,7 +98,7 @@ void DH_free(DH *r)
     if (r == NULL)
         return;
 
-    CRYPTO_atomic_add(&r->references, -1, &i, r->lock);
+    CRYPTO_DOWN_REF(&r->references, &i, r->lock);
     REF_PRINT_COUNT("DH", r);
     if (i > 0)
         return;
@@ -141,7 +129,7 @@ int DH_up_ref(DH *r)
 {
     int i;
 
-    if (CRYPTO_atomic_add(&r->references, 1, &i, r->lock) <= 0)
+    if (CRYPTO_UP_REF(&r->references, &i, r->lock) <= 0)
         return 0;
 
     REF_PRINT_COUNT("DH", r);
@@ -151,12 +139,12 @@ int DH_up_ref(DH *r)
 
 int DH_set_ex_data(DH *d, int idx, void *arg)
 {
-    return (CRYPTO_set_ex_data(&d->ex_data, idx, arg));
+    return CRYPTO_set_ex_data(&d->ex_data, idx, arg);
 }
 
 void *DH_get_ex_data(DH *d, int idx)
 {
-    return (CRYPTO_get_ex_data(&d->ex_data, idx));
+    return CRYPTO_get_ex_data(&d->ex_data, idx);
 }
 
 int DH_bits(const DH *dh)
@@ -166,7 +154,7 @@ int DH_bits(const DH *dh)
 
 int DH_size(const DH *dh)
 {
-    return (BN_num_bytes(dh->p));
+    return BN_num_bytes(dh->p);
 }
 
 int DH_security_bits(const DH *dh)
@@ -182,7 +170,8 @@ int DH_security_bits(const DH *dh)
 }
 
 
-void DH_get0_pqg(const DH *dh, BIGNUM **p, BIGNUM **q, BIGNUM **g)
+void DH_get0_pqg(const DH *dh,
+                 const BIGNUM **p, const BIGNUM **q, const BIGNUM **g)
 {
     if (p != NULL)
         *p = dh->p;
@@ -196,11 +185,9 @@ int DH_set0_pqg(DH *dh, BIGNUM *p, BIGNUM *q, BIGNUM *g)
 {
     /* If the fields p and g in d are NULL, the corresponding input
      * parameters MUST be non-NULL.  q may remain NULL.
-     *
-     * It is an error to give the results from get0 on d
-     * as input parameters.
      */
-    if (p == dh->p || (dh->q != NULL && q == dh->q) || g == dh->g)
+    if ((dh->p == NULL && p == NULL)
+        || (dh->g == NULL && g == NULL))
         return 0;
 
     if (p != NULL) {
@@ -234,7 +221,7 @@ int DH_set_length(DH *dh, long length)
     return 1;
 }
 
-void DH_get0_key(const DH *dh, BIGNUM **pub_key, BIGNUM **priv_key)
+void DH_get0_key(const DH *dh, const BIGNUM **pub_key, const BIGNUM **priv_key)
 {
     if (pub_key != NULL)
         *pub_key = dh->pub_key;
@@ -244,17 +231,6 @@ void DH_get0_key(const DH *dh, BIGNUM **pub_key, BIGNUM **priv_key)
 
 int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key)
 {
-    /* If the pub_key in dh is NULL, the corresponding input
-     * parameters MUST be non-NULL.  The priv_key field may
-     * be left NULL.
-     *
-     * It is an error to give the results from get0 on dh
-     * as input parameters.
-     */
-    if (dh->pub_key == pub_key
-        || (dh->priv_key != NULL && priv_key == dh->priv_key))
-        return 0;
-
     if (pub_key != NULL) {
         BN_free(dh->pub_key);
         dh->pub_key = pub_key;
@@ -267,6 +243,31 @@ int DH_set0_key(DH *dh, BIGNUM *pub_key, BIGNUM *priv_key)
     return 1;
 }
 
+const BIGNUM *DH_get0_p(const DH *dh)
+{
+    return dh->p;
+}
+
+const BIGNUM *DH_get0_q(const DH *dh)
+{
+    return dh->q;
+}
+
+const BIGNUM *DH_get0_g(const DH *dh)
+{
+    return dh->g;
+}
+
+const BIGNUM *DH_get0_priv_key(const DH *dh)
+{
+    return dh->priv_key;
+}
+
+const BIGNUM *DH_get0_pub_key(const DH *dh)
+{
+    return dh->pub_key;
+}
+
 void DH_clear_flags(DH *dh, int flags)
 {
     dh->flags &= ~flags;