[WIP] Support OpenSSL 3.0

.github/workflows/test.yml

@@ -94,3 +94,40 @@ jobs:
 
       - name: test
         run:  rake test TESTOPTS="-v --no-show-detail-immediately" OSSL_MDEBUG=1
+
+  test-openssl-master:
+    name: OpenSSL master
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ ubuntu-latest ]
+        ruby: [ 2.7 ]
+    steps:
+      - name: repo checkout
+        uses: actions/checkout@v2
+
+      - name: prepare openssl
+        run: |
+          mkdir -p tmp/build-openssl && cd tmp/build-openssl
+          git clone https://github.com/openssl/openssl.git --depth=1
+          cd openssl
+          ./Configure --prefix=$HOME/.openssl/master --libdir=lib \
+              linux-x86_64
+          make depend
+          make -j4
+          make install_sw
+
+      - name: load ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+
+      - name: depends
+        run:  bundle install
+
+      - name: compile
+        run:  rake compile -- --enable-debug --with-openssl-dir=$HOME/.openssl/master
+
+      - name: test
+        run:  rake test TESTOPTS="-v --no-show-detail-immediately"

ext/openssl/extconf.rb

@@ -181,6 +181,7 @@ def find_openssl_library
 have_func("EVP_MD_CTX_get_pkey_ctx")
 have_func("EVP_PKEY_eq")
 have_func("EVP_PKEY_dup")
+have_func("EVP_PKEY_todata")
 
 Logging::message "=== Checking done. ===\n"
 

ext/openssl/ossl_bn.c

@@ -74,6 +74,23 @@ ossl_bn_new(const BIGNUM *bn)
     return obj;
 }
 
+#ifdef HAVE_EVP_PKEY_TODATA
+VALUE
+ossl_bn_new_from_native(const void *data, size_t data_size)
+{
+    BIGNUM *bn;
+    VALUE obj;
+
+    obj = NewBN(cBN);
+    bn = BN_native2bn(data, data_size, NULL);
+    if (!bn)
+        ossl_raise(eBNError, "BN_native2bn");
+    SetBN(obj, bn);
+
+    return obj;
+}
+#endif
+
 static BIGNUM *
 integer_to_bnptr(VALUE obj, BIGNUM *orig)
 {

ext/openssl/ossl_bn.h

@@ -19,6 +19,9 @@ BN_CTX *ossl_bn_ctx_get(void);
 #define GetBNPtr(obj) ossl_bn_value_ptr(&(obj))
 
 VALUE ossl_bn_new(const BIGNUM *);
+#ifdef HAVE_EVP_PKEY_TODATA
+VALUE ossl_bn_new_from_native(const void *data, size_t data_size);
+#endif
 BIGNUM *ossl_bn_value_ptr(volatile VALUE *);
 void Init_ossl_bn(void);