1 files changed, 84 insertions, 0 deletions
diff --git a/openssl-sys/src/openssl_shim.c b/openssl-sys/src/openssl_shim.c
new file mode 100644
index 00000000..7b4f9c74
--- /dev/null
+++ b/openssl-sys/src/openssl_shim.c
@@ -0,0 +1,84 @@
+#include <openssl/hmac.h>
+#include <openssl/ssl.h>
+
+#if OPENSSL_VERSION_NUMBER < 0x1000000L
+// Copied from openssl crypto/hmac/hmac.c
+int HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx)
+     {
+     if (!EVP_MD_CTX_copy(&dctx->i_ctx, &sctx->i_ctx))
+         goto err;
+     if (!EVP_MD_CTX_copy(&dctx->o_ctx, &sctx->o_ctx))
+         goto err;
+     if (!EVP_MD_CTX_copy(&dctx->md_ctx, &sctx->md_ctx))
+         goto err;
+     memcpy(dctx->key, sctx->key, HMAC_MAX_MD_CBLOCK);
+     dctx->key_length = sctx->key_length;
+     dctx->md = sctx->md;
+     return 1;
+     err:
+     return 0;
+     }
+
+int HMAC_Init_ex_shim(HMAC_CTX *ctx, const void *key, int key_len, const EVP_MD *md, ENGINE *impl) {
+    HMAC_Init_ex(ctx, key, key_len, md, impl);
+    return 1;
+}
+
+int HMAC_Update_shim(HMAC_CTX *ctx, const unsigned char *data, int len) {
+    HMAC_Update(ctx, data, len);
+    return 1;
+}
+
+int HMAC_Final_shim(HMAC_CTX *ctx, unsigned char *md, unsigned int *len) {
+    HMAC_Final(ctx, md, len);
+    return 1;
+}
+
+#else
+
+int HMAC_Init_ex_shim(HMAC_CTX *ctx, const void *key, int key_len, const EVP_MD *md, ENGINE *impl) {
+    return HMAC_Init_ex(ctx, key, key_len, md, impl);
+}
+
+int HMAC_Update_shim(HMAC_CTX *ctx, const unsigned char *data, int len) {
+    return HMAC_Update(ctx, data, len);
+}
+
+int HMAC_Final_shim(HMAC_CTX *ctx, unsigned char *md, unsigned int *len) {
+    return HMAC_Final(ctx, md, len);
+}
+#endif
+
+// shims for OpenSSL macros
+
+int BIO_eof_shim(BIO *b) {
+    return BIO_eof(b);
+}
+
+void BIO_set_mem_eof_return_shim(BIO *b, int v) {
+    BIO_set_mem_eof_return(b, v);
+}
+
+long SSL_CTX_set_options_shim(SSL_CTX *ctx, long options) {
+    return SSL_CTX_set_options(ctx, options);
+}
+
+long SSL_CTX_get_options_shim(SSL_CTX *ctx) {
+    return SSL_CTX_get_options(ctx);
+}
+
+long SSL_CTX_clear_options_shim(SSL_CTX *ctx, long options) {
+    return SSL_CTX_clear_options(ctx, options);
+}
+
+long SSL_CTX_add_extra_chain_cert_shim(SSL_CTX *ctx, X509 *x509) {
+    return SSL_CTX_add_extra_chain_cert(ctx, x509);
+}
+
+long SSL_CTX_set_read_ahead_shim(SSL_CTX *ctx, long m) {
+    return SSL_CTX_set_read_ahead(ctx, m);
+}
+
+long SSL_set_tlsext_host_name_shim(SSL *s, char *name) {
+    return SSL_set_tlsext_host_name(s, name);
+}