Make the RSA_METHOD structure opaque

Move rsa_meth_st away from public headers.
Add RSA_METHOD creator/destructor functions.
Add RSA_METHOD accessor/writer functions.
Adapt all other source to use the creator, destructor, accessors and writers.

Reviewed-by: Matt Caswell <matt@openssl.org>

1 files changed, 257 insertions, 0 deletions

diff --git a/crypto/rsa/rsa_meth.c b/crypto/rsa/rsa_meth.c
new file mode 100644
index 0000000000..6c7679dc1a
--- /dev/null
+++ b/crypto/rsa/rsa_meth.c
@@ -0,0 +1,257 @@
+/*
+ * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL licenses, (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * https://www.openssl.org/source/license.html
+ * or in the file LICENSE in the source distribution.
+ */
+
+#include <string.h>
+#include "rsa_locl.h"
+
+RSA_METHOD *RSA_meth_new(const char *name, int flags)
+{
+    RSA_METHOD *meth = OPENSSL_zalloc(sizeof(RSA_METHOD));
+
+    if (meth != NULL) {
+        meth->name = OPENSSL_strdup(name);
+        meth->flags = flags;
+    }
+
+    return meth;
+}
+
+void RSA_meth_free(RSA_METHOD *meth)
+{
+    if (meth != NULL) {
+        if (meth->name != NULL)
+            OPENSSL_free(meth->name);
+        OPENSSL_free(meth);
+    }
+}
+
+RSA_METHOD *RSA_meth_dup(const RSA_METHOD *meth)
+{
+    RSA_METHOD *ret;
+
+    ret = OPENSSL_malloc(sizeof(RSA_METHOD));
+
+    if (ret != NULL) {
+        memcpy(ret, meth, sizeof(*meth));
+        ret->name = OPENSSL_strdup(meth->name);
+    }
+
+    return ret;
+}
+
+const char *RSA_meth_get0_name(const RSA_METHOD *meth)
+{
+    return meth->name;
+}
+
+int RSA_meth_set1_name(RSA_METHOD *meth, const char *name)
+{
+    OPENSSL_free(meth->name);
+    meth->name = OPENSSL_strdup(name);
+
+    return meth->name != NULL;
+}
+
+int RSA_meth_get_flags(RSA_METHOD *meth)
+{
+    return meth->flags;
+}
+
+int RSA_meth_set_flags(RSA_METHOD *meth, int flags)
+{
+    meth->flags = flags;
+    return 1;
+}
+
+void *RSA_meth_get0_app_data(const RSA_METHOD *meth)
+{
+    return meth->app_data;
+}
+
+int RSA_meth_set0_app_data(RSA_METHOD *meth, void *app_data)
+{
+    meth->app_data = app_data;
+    return 1;
+}
+
+int (*RSA_meth_get_pub_enc(const RSA_METHOD *meth))
+    (int flen, const unsigned char *from,
+     unsigned char *to, RSA *rsa, int padding)
+{
+    return meth->rsa_pub_enc;
+}
+
+int RSA_meth_set_pub_enc(RSA_METHOD *meth,
+                         int (*pub_enc) (int flen, const unsigned char *from,
+                                         unsigned char *to, RSA *rsa,
+                                         int padding))
+{
+    meth->rsa_pub_enc = pub_enc;
+    return 1;
+}
+
+int (*RSA_meth_get_pub_dec(const RSA_METHOD *meth))
+    (int flen, const unsigned char *from,
+     unsigned char *to, RSA *rsa, int padding)
+{
+    return meth->rsa_pub_dec;
+}
+
+int RSA_meth_set_pub_dec(RSA_METHOD *meth,
+                         int (*pub_dec) (int flen, const unsigned char *from,
+                                         unsigned char *to, RSA *rsa,
+                                         int padding))
+{
+    meth->rsa_pub_dec = pub_dec;
+    return 1;
+}
+
+int (*RSA_meth_get_priv_enc(const RSA_METHOD *meth))
+    (int flen, const unsigned char *from,
+     unsigned char *to, RSA *rsa, int padding)
+{
+    return meth->rsa_priv_enc;
+}
+
+int RSA_meth_set_priv_enc(RSA_METHOD *meth,
+                          int (*priv_enc) (int flen, const unsigned char *from,
+                                           unsigned char *to, RSA *rsa,
+                                           int padding))
+{
+    meth->rsa_priv_enc = priv_enc;
+    return 1;
+}
+
+int (*RSA_meth_get_priv_dec(const RSA_METHOD *meth))
+    (int flen, const unsigned char *from,
+     unsigned char *to, RSA *rsa, int padding)
+{
+    return meth->rsa_priv_dec;
+}
+
+int RSA_meth_set_priv_dec(RSA_METHOD *meth,
+                          int (*priv_dec) (int flen, const unsigned char *from,
+                                           unsigned char *to, RSA *rsa,
+                                           int padding))
+{
+    meth->rsa_priv_dec = priv_dec;
+    return 1;
+}
+
+    /* Can be null */
+int (*RSA_meth_get_mod_exp(const RSA_METHOD *meth))
+    (BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx)
+{
+    return meth->rsa_mod_exp;
+}
+
+int RSA_meth_set_mod_exp(RSA_METHOD *meth,
+                         int (*mod_exp) (BIGNUM *r0, const BIGNUM *I, RSA *rsa,
+                                         BN_CTX *ctx))
+{
+    meth->rsa_mod_exp = mod_exp;
+    return 1;
+}
+
+    /* Can be null */
+int (*RSA_meth_get_bn_mod_exp(const RSA_METHOD *meth))
+    (BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
+     const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx)
+{
+    return meth->bn_mod_exp;
+}
+
+int RSA_meth_set_bn_mod_exp(RSA_METHOD *meth,
+                            int (*bn_mod_exp) (BIGNUM *r,
+                                               const BIGNUM *a,
+                                               const BIGNUM *p,
+                                               const BIGNUM *m,
+                                               BN_CTX *ctx,
+                                               BN_MONT_CTX *m_ctx))
+{
+    meth->bn_mod_exp = bn_mod_exp;
+    return 1;
+}
+
+    /* called at new */
+int (*RSA_meth_get_init(const RSA_METHOD *meth)) (RSA *rsa)
+{
+    return meth->init;
+}
+
+int RSA_meth_set_init(RSA_METHOD *meth, int (*init) (RSA *rsa))
+{
+    meth->init = init;
+    return 1;
+}
+
+    /* called at free */
+int (*RSA_meth_get_finish(const RSA_METHOD *meth)) (RSA *rsa)
+{
+    return meth->finish;
+}
+
+int RSA_meth_set_finish(RSA_METHOD *meth, int (*finish) (RSA *rsa))
+{
+    meth->finish = finish;
+    return 1;
+}
+
+int (*RSA_meth_get_sign(const RSA_METHOD *meth))
+    (int type,
+     const unsigned char *m, unsigned int m_length,
+     unsigned char *sigret, unsigned int *siglen,
+     const RSA *rsa)
+{
+    return meth->rsa_sign;
+}
+
+int RSA_meth_set_sign(RSA_METHOD *meth,
+                      int (*sign) (int type, const unsigned char *m,
+                                   unsigned int m_length,
+                                   unsigned char *sigret, unsigned int *siglen,
+                                   const RSA *rsa))
+{
+    meth->rsa_sign = sign;
+    return 1;
+}
+
+int (*RSA_meth_get_verify(const RSA_METHOD *meth))
+    (int dtype, const unsigned char *m,
+     unsigned int m_length, const unsigned char *sigbuf,
+     unsigned int siglen, const RSA *rsa)
+{
+    return meth->rsa_verify;
+}
+
+int RSA_meth_set_verify(RSA_METHOD *meth,
+                        int (*verify) (int dtype, const unsigned char *m,
+                                       unsigned int m_length,
+                                       const unsigned char *sigbuf,
+                                       unsigned int siglen, const RSA *rsa))
+{
+    meth->rsa_verify = verify;
+    return 1;
+}
+
+int (*RSA_meth_get_keygen(const RSA_METHOD *meth))
+    (RSA *rsa, int bits, BIGNUM *e, BN_GENCB *cb)
+{
+    return meth->rsa_keygen;
+}
+
+int RSA_meth_set_keygen(RSA_METHOD *meth,
+                        int (*keygen) (RSA *rsa, int bits, BIGNUM *e,
+                                       BN_GENCB *cb))
+{
+    meth->rsa_keygen = keygen;
+    return 1;
+}
+