1 files changed, 133 insertions, 0 deletions
diff --git a/include/openssl/decoder.h b/include/openssl/decoder.h
new file mode 100644
index 0000000000..d4ee2cf413
--- /dev/null
+++ b/include/openssl/decoder.h
@@ -0,0 +1,133 @@
+/*
+ * Copyright 2020-2021 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 OPENSSL_DECODER_H
+# define OPENSSL_DECODER_H
+# pragma once
+
+# include <openssl/opensslconf.h>
+
+# ifndef OPENSSL_NO_STDIO
+#  include <stdio.h>
+# endif
+# include <stdarg.h>
+# include <stddef.h>
+# include <openssl/decodererr.h>
+# include <openssl/types.h>
+# include <openssl/core.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+OSSL_DECODER *OSSL_DECODER_fetch(OSSL_LIB_CTX *libctx, const char *name,
+                                 const char *properties);
+int OSSL_DECODER_up_ref(OSSL_DECODER *encoder);
+void OSSL_DECODER_free(OSSL_DECODER *encoder);
+
+const OSSL_PROVIDER *OSSL_DECODER_get0_provider(const OSSL_DECODER *encoder);
+const char *OSSL_DECODER_get0_properties(const OSSL_DECODER *encoder);
+const char *OSSL_DECODER_get0_name(const OSSL_DECODER *decoder);
+const char *OSSL_DECODER_get0_description(const OSSL_DECODER *decoder);
+int OSSL_DECODER_is_a(const OSSL_DECODER *encoder, const char *name);
+
+void OSSL_DECODER_do_all_provided(OSSL_LIB_CTX *libctx,
+                                  void (*fn)(OSSL_DECODER *encoder, void *arg),
+                                  void *arg);
+int OSSL_DECODER_names_do_all(const OSSL_DECODER *encoder,
+                              void (*fn)(const char *name, void *data),
+                              void *data);
+const OSSL_PARAM *OSSL_DECODER_gettable_params(OSSL_DECODER *decoder);
+int OSSL_DECODER_get_params(OSSL_DECODER *decoder, OSSL_PARAM params[]);
+
+const OSSL_PARAM *OSSL_DECODER_settable_ctx_params(OSSL_DECODER *encoder);
+OSSL_DECODER_CTX *OSSL_DECODER_CTX_new(void);
+int OSSL_DECODER_CTX_set_params(OSSL_DECODER_CTX *ctx,
+                                const OSSL_PARAM params[]);
+void OSSL_DECODER_CTX_free(OSSL_DECODER_CTX *ctx);
+
+/* Utilities that help set specific parameters */
+int OSSL_DECODER_CTX_set_passphrase(OSSL_DECODER_CTX *ctx,
+                                    const unsigned char *kstr, size_t klen);
+int OSSL_DECODER_CTX_set_pem_password_cb(OSSL_DECODER_CTX *ctx,
+                                         pem_password_cb *cb, void *cbarg);
+int OSSL_DECODER_CTX_set_passphrase_cb(OSSL_DECODER_CTX *ctx,
+                                       OSSL_PASSPHRASE_CALLBACK *cb,
+                                       void *cbarg);
+int OSSL_DECODER_CTX_set_passphrase_ui(OSSL_DECODER_CTX *ctx,
+                                       const UI_METHOD *ui_method,
+                                       void *ui_data);
+
+/*
+ * Utilities to read the object to decode, with the result sent to cb.
+ * These will discover all provided methods
+ */
+
+int OSSL_DECODER_CTX_set_selection(OSSL_DECODER_CTX *ctx, int selection);
+int OSSL_DECODER_CTX_set_input_type(OSSL_DECODER_CTX *ctx,
+                                    const char *input_type);
+int OSSL_DECODER_CTX_set_input_structure(OSSL_DECODER_CTX *ctx,
+                                         const char *input_structure);
+int OSSL_DECODER_CTX_add_decoder(OSSL_DECODER_CTX *ctx, OSSL_DECODER *decoder);
+int OSSL_DECODER_CTX_add_extra(OSSL_DECODER_CTX *ctx,
+                               OSSL_LIB_CTX *libctx, const char *propq);
+int OSSL_DECODER_CTX_get_num_decoders(OSSL_DECODER_CTX *ctx);
+
+typedef struct ossl_decoder_instance_st OSSL_DECODER_INSTANCE;
+OSSL_DECODER *
+OSSL_DECODER_INSTANCE_get_decoder(OSSL_DECODER_INSTANCE *decoder_inst);
+void *
+OSSL_DECODER_INSTANCE_get_decoder_ctx(OSSL_DECODER_INSTANCE *decoder_inst);
+const char *
+OSSL_DECODER_INSTANCE_get_input_type(OSSL_DECODER_INSTANCE *decoder_inst);
+const char *
+OSSL_DECODER_INSTANCE_get_input_structure(OSSL_DECODER_INSTANCE *decoder_inst,
+                                          int *was_set);
+
+typedef int OSSL_DECODER_CONSTRUCT(OSSL_DECODER_INSTANCE *decoder_inst,
+                                   const OSSL_PARAM *params,
+                                   void *construct_data);
+typedef void OSSL_DECODER_CLEANUP(void *construct_data);
+
+int OSSL_DECODER_CTX_set_construct(OSSL_DECODER_CTX *ctx,
+                                   OSSL_DECODER_CONSTRUCT *construct);
+int OSSL_DECODER_CTX_set_construct_data(OSSL_DECODER_CTX *ctx,
+                                        void *construct_data);
+int OSSL_DECODER_CTX_set_cleanup(OSSL_DECODER_CTX *ctx,
+                                 OSSL_DECODER_CLEANUP *cleanup);
+OSSL_DECODER_CONSTRUCT *OSSL_DECODER_CTX_get_construct(OSSL_DECODER_CTX *ctx);
+void *OSSL_DECODER_CTX_get_construct_data(OSSL_DECODER_CTX *ctx);
+OSSL_DECODER_CLEANUP *OSSL_DECODER_CTX_get_cleanup(OSSL_DECODER_CTX *ctx);
+
+int OSSL_DECODER_export(OSSL_DECODER_INSTANCE *decoder_inst,
+                        void *reference, size_t reference_sz,
+                        OSSL_CALLBACK *export_cb, void *export_cbarg);
+
+int OSSL_DECODER_from_bio(OSSL_DECODER_CTX *ctx, BIO *in);
+#ifndef OPENSSL_NO_STDIO
+int OSSL_DECODER_from_fp(OSSL_DECODER_CTX *ctx, FILE *in);
+#endif
+int OSSL_DECODER_from_data(OSSL_DECODER_CTX *ctx, const unsigned char **pdata,
+                           size_t *pdata_len);
+
+/*
+ * Create the OSSL_DECODER_CTX with an associated type.  This will perform
+ * an implicit OSSL_DECODER_fetch(), suitable for the object of that type.
+ */
+OSSL_DECODER_CTX *
+OSSL_DECODER_CTX_new_for_pkey(EVP_PKEY **pkey,
+                              const char *input_type,
+                              const char *input_struct,
+                              const char *keytype, int selection,
+                              OSSL_LIB_CTX *libctx, const char *propquery);
+
+# ifdef __cplusplus
+}
+# endif
+#endif