1 files changed, 91 insertions, 0 deletions
diff --git a/include/internal/bio.h b/include/internal/bio.h
new file mode 100644
index 00000000..2d36a7b9
--- /dev/null
+++ b/include/internal/bio.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef OSSL_INTERNAL_BIO_H
+# define OSSL_INTERNAL_BIO_H
+# pragma once
+
+# include <openssl/core.h>
+# include <openssl/bio.h>
+
+struct bio_method_st {
+    int type;
+    char *name;
+    int (*bwrite) (BIO *, const char *, size_t, size_t *);
+    int (*bwrite_old) (BIO *, const char *, int);
+    int (*bread) (BIO *, char *, size_t, size_t *);
+    int (*bread_old) (BIO *, char *, int);
+    int (*bputs) (BIO *, const char *);
+    int (*bgets) (BIO *, char *, int);
+    long (*ctrl) (BIO *, int, long, void *);
+    int (*create) (BIO *);
+    int (*destroy) (BIO *);
+    long (*callback_ctrl) (BIO *, int, BIO_info_cb *);
+};
+
+void bio_free_ex_data(BIO *bio);
+void bio_cleanup(void);
+
+
+/* Old style to new style BIO_METHOD conversion functions */
+int bwrite_conv(BIO *bio, const char *data, size_t datal, size_t *written);
+int bread_conv(BIO *bio, char *data, size_t datal, size_t *read);
+
+/* Changes to these internal BIOs must also update include/openssl/bio.h */
+# define BIO_CTRL_SET_KTLS                      72
+# define BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG     74
+# define BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG        75
+
+/*
+ * This is used with socket BIOs:
+ * BIO_FLAGS_KTLS_TX means we are using ktls with this BIO for sending.
+ * BIO_FLAGS_KTLS_TX_CTRL_MSG means we are about to send a ctrl message next.
+ * BIO_FLAGS_KTLS_RX means we are using ktls with this BIO for receiving.
+ */
+# define BIO_FLAGS_KTLS_TX          0x800
+# define BIO_FLAGS_KTLS_TX_CTRL_MSG 0x1000
+# define BIO_FLAGS_KTLS_RX          0x2000
+
+/* KTLS related controls and flags */
+# define BIO_set_ktls_flag(b, is_tx) \
+    BIO_set_flags(b, (is_tx) ? BIO_FLAGS_KTLS_TX : BIO_FLAGS_KTLS_RX)
+# define BIO_should_ktls_flag(b, is_tx) \
+    BIO_test_flags(b, (is_tx) ? BIO_FLAGS_KTLS_TX : BIO_FLAGS_KTLS_RX)
+# define BIO_set_ktls_ctrl_msg_flag(b) \
+    BIO_set_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
+# define BIO_should_ktls_ctrl_msg_flag(b) \
+    BIO_test_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
+# define BIO_clear_ktls_ctrl_msg_flag(b) \
+    BIO_clear_flags(b, BIO_FLAGS_KTLS_TX_CTRL_MSG)
+
+# define BIO_set_ktls(b, keyblob, is_tx)   \
+     BIO_ctrl(b, BIO_CTRL_SET_KTLS, is_tx, keyblob)
+# define BIO_set_ktls_ctrl_msg(b, record_type)   \
+     BIO_ctrl(b, BIO_CTRL_SET_KTLS_TX_SEND_CTRL_MSG, record_type, NULL)
+# define BIO_clear_ktls_ctrl_msg(b) \
+     BIO_ctrl(b, BIO_CTRL_CLEAR_KTLS_TX_CTRL_MSG, 0, NULL)
+
+/* Functions to allow the core to offer the CORE_BIO type to providers */
+OSSL_CORE_BIO *ossl_core_bio_new_from_bio(BIO *bio);
+OSSL_CORE_BIO *ossl_core_bio_new_file(const char *filename, const char *mode);
+OSSL_CORE_BIO *ossl_core_bio_new_mem_buf(const void *buf, int len);
+int ossl_core_bio_read_ex(OSSL_CORE_BIO *cb, void *data, size_t dlen,
+                          size_t *readbytes);
+int ossl_core_bio_write_ex(OSSL_CORE_BIO *cb, const void *data, size_t dlen,
+                           size_t *written);
+int ossl_core_bio_gets(OSSL_CORE_BIO *cb, char *buf, int size);
+int ossl_core_bio_puts(OSSL_CORE_BIO *cb, const char *buf);
+long ossl_core_bio_ctrl(OSSL_CORE_BIO *cb, int cmd, long larg, void *parg);
+int ossl_core_bio_up_ref(OSSL_CORE_BIO *cb);
+int ossl_core_bio_free(OSSL_CORE_BIO *cb);
+int ossl_core_bio_vprintf(OSSL_CORE_BIO *cb, const char *format, va_list args);
+
+int ossl_bio_init_core(OSSL_LIB_CTX *libctx, const OSSL_DISPATCH *fns);
+
+#endif