add DSA getters/setters for opaquing the struct (#2889)
* add DSA getters/setters for opaquing the struct
* these can live in functions
diff --git a/src/_cffi_src/openssl/dsa.py b/src/_cffi_src/openssl/dsa.py
index 69935c1..2844a9e 100644
--- a/src/_cffi_src/openssl/dsa.py
+++ b/src/_cffi_src/openssl/dsa.py
@@ -35,12 +35,85 @@
DSA *);
int DSA_verify(int, const unsigned char *, int, const unsigned char *, int,
DSA *);
+
+/* added in 1.1.0 to access the opaque struct */
+void DSA_get0_pqg(const DSA *, BIGNUM **, BIGNUM **, BIGNUM **);
+int DSA_set0_pqg(DSA *, BIGNUM *, BIGNUM *, BIGNUM *);
+void DSA_get0_key(const DSA *, BIGNUM **, BIGNUM **);
+int DSA_set0_key(DSA *, BIGNUM *, BIGNUM *);
"""
MACROS = """
+/* DSAparams_dup is a macro in 0.9.8 */
+DSA *DSAparams_dup(DSA *);
int DSA_generate_parameters_ex(DSA *, int, unsigned char *, int,
int *, unsigned long *, BN_GENCB *);
"""
CUSTOMIZATIONS = """
+/* These functions were added in OpenSSL 1.1.0-pre5 (beta2) */
+#if OPENSSL_VERSION_NUMBER < 0x10100005 || defined(LIBRESSL_VERSION_NUMBER)
+void DSA_get0_pqg(const DSA *d, BIGNUM **p, BIGNUM **q, BIGNUM **g)
+{
+ if (p != NULL)
+ *p = d->p;
+ if (q != NULL)
+ *q = d->q;
+ if (g != NULL)
+ *g = d->g;
+}
+int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g)
+{
+ /* If the fields in d are NULL, the corresponding input
+ * parameters MUST be non-NULL.
+ *
+ * It is an error to give the results from get0 on d
+ * as input parameters.
+ */
+ if (p == d->p || q == d->q || g == d->g)
+ return 0;
+ if (p != NULL) {
+ BN_free(d->p);
+ d->p = p;
+ }
+ if (q != NULL) {
+ BN_free(d->q);
+ d->q = q;
+ }
+ if (g != NULL) {
+ BN_free(d->g);
+ d->g = g;
+ }
+ return 1;
+}
+void DSA_get0_key(const DSA *d, BIGNUM **pub_key, BIGNUM **priv_key)
+{
+ if (pub_key != NULL)
+ *pub_key = d->pub_key;
+ if (priv_key != NULL)
+ *priv_key = d->priv_key;
+}
+int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key)
+{
+ /* If the pub_key in d 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 d
+ * as input parameters.
+ */
+ if (d->pub_key == pub_key
+ || (d->priv_key != NULL && priv_key != d->priv_key))
+ return 0;
+ if (pub_key != NULL) {
+ BN_free(d->pub_key);
+ d->pub_key = pub_key;
+ }
+ if (priv_key != NULL) {
+ BN_free(d->priv_key);
+ d->priv_key = priv_key;
+ }
+ return 1;
+}
+#endif
"""