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-rw-r--r--lib/crypto/c_src/info.c107
1 files changed, 107 insertions, 0 deletions
diff --git a/lib/crypto/c_src/info.c b/lib/crypto/c_src/info.c
new file mode 100644
index 0000000000..42f477fead
--- /dev/null
+++ b/lib/crypto/c_src/info.c
@@ -0,0 +1,107 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "info.h"
+
+#ifdef HAVE_DYNAMIC_CRYPTO_LIB
+
+# if defined(DEBUG)
+char *crypto_callback_name = "crypto_callback.debug";
+# elif defined(VALGRIND)
+char *crypto_callback_name = "crypto_callback.valgrind";
+# else
+char *crypto_callback_name = "crypto_callback";
+# endif
+
+int change_basename(ErlNifBinary* bin, char* buf, size_t bufsz, const char* newfile)
+{
+ size_t i;
+ size_t newlen;
+
+ for (i = bin->size; i > 0; i--) {
+ if (bin->data[i-1] == '/')
+ break;
+ }
+
+ newlen = strlen(newfile);
+ if (i > SIZE_MAX - newlen)
+ goto err;
+
+ if (i + newlen >= bufsz)
+ goto err;
+
+ memcpy(buf, bin->data, i);
+ strcpy(buf+i, newfile);
+
+ return 1;
+
+ err:
+ return 0;
+}
+
+void error_handler(void* null, const char* errstr)
+{
+ PRINTF_ERR1("CRYPTO LOADING ERROR: '%s'", errstr);
+}
+#endif /* HAVE_DYNAMIC_CRYPTO_LIB */
+
+ERL_NIF_TERM info_lib(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
+{/* () */
+ /* [{<<"OpenSSL">>,9470143,<<"OpenSSL 0.9.8k 25 Mar 2009">>}] */
+
+ ERL_NIF_TERM name_term, ver_term;
+ static const char libname[] = "OpenSSL";
+ size_t name_sz;
+ const char* ver;
+ size_t ver_sz;
+ int ver_num;
+ unsigned char *out_name, *out_ver;
+
+ ASSERT(argc == 0);
+
+ name_sz = strlen(libname);
+ ver = SSLeay_version(SSLEAY_VERSION);
+ ver_sz = strlen(ver);
+ ver_num = OPENSSL_VERSION_NUMBER;
+
+ /* R16:
+ * Ignore library version number from SSLeay() and instead show header
+ * version. Otherwise user might try to call a function that is implemented
+ * by a newer library but not supported by the headers used at compile time.
+ * Example: DES_ede3_cfb_encrypt in 0.9.7i but not in 0.9.7d.
+ *
+ * Version string is still from library though.
+ */
+
+ if ((out_name = enif_make_new_binary(env, name_sz, &name_term)) == NULL)
+ goto err;
+ if ((out_ver = enif_make_new_binary(env, ver_sz, &ver_term)) == NULL)
+ goto err;
+
+ memcpy(out_name, libname, name_sz);
+ memcpy(out_ver, ver, ver_sz);
+
+ return enif_make_list1(env, enif_make_tuple3(env, name_term,
+ enif_make_int(env, ver_num),
+ ver_term));
+
+ err:
+ return enif_make_badarg(env);
+}