Add visibility rules.
This change marks public symbols as dynamically exported. This means
that it becomes viable to build a shared library of libcrypto and libssl
with -fvisibility=hidden.
On Windows, one not only needs to mark functions for export in a
component, but also for import when using them from a different
component. Because of this we have to build with
|BORINGSSL_IMPLEMENTATION| defined when building the code. Other
components, when including our headers, won't have that defined and then
the |OPENSSL_EXPORT| tag becomes an import tag instead. See the #defines
in base.h
In the asm code, symbols are now hidden by default and those that need
to be exported are wrapped by a C function.
In order to support Chromium, a couple of libssl functions were moved to
ssl.h from ssl_locl.h: ssl_get_new_session and ssl_update_cache.
Change-Id: Ib4b76e2f1983ee066e7806c24721e8626d08a261
Reviewed-on: https://boringssl-review.googlesource.com/1350
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/include/openssl/hmac.h b/include/openssl/hmac.h
index 33c9061..34c4497 100644
--- a/include/openssl/hmac.h
+++ b/include/openssl/hmac.h
@@ -76,9 +76,10 @@
* and hash function, and writes the result to |out|. On entry, |out| must
* contain |EVP_MAX_MD_SIZE| bytes of space. The actual length of the result is
* written to |*out_len|. It returns |out| or NULL on error. */
-uint8_t *HMAC(const EVP_MD *evp_md, const void *key, size_t key_len,
- const uint8_t *data, size_t data_len, uint8_t *out,
- unsigned int *out_len);
+OPENSSL_EXPORT uint8_t *HMAC(const EVP_MD *evp_md, const void *key,
+ size_t key_len, const uint8_t *data,
+ size_t data_len, uint8_t *out,
+ unsigned int *out_len);
/* Incremental operation. */
@@ -87,51 +88,54 @@
* that HMAC_CTX objects will be allocated on the stack thus no allocation
* function is provided. If needed, allocate |sizeof(HMAC_CTX)| and call
* |HMAC_CTX_init| on it. */
-void HMAC_CTX_init(HMAC_CTX *ctx);
+OPENSSL_EXPORT void HMAC_CTX_init(HMAC_CTX *ctx);
/* HMAC_CTX_cleanup frees data owned by |ctx|. */
-void HMAC_CTX_cleanup(HMAC_CTX *ctx);
+OPENSSL_EXPORT void HMAC_CTX_cleanup(HMAC_CTX *ctx);
/* HMAC_Init_ex sets up an initialised |HMAC_CTX| to use |md| as the hash
* function and |key| as the key. Any of |md| or |key| can be NULL, in which
* case the previous value will be used. It returns one on success or zero
* otherwise. */
-int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, size_t key_len,
- const EVP_MD *md, ENGINE *impl);
+OPENSSL_EXPORT int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, size_t key_len,
+ const EVP_MD *md, ENGINE *impl);
/* HMAC_Update hashes |data_len| bytes from |data| into the current HMAC
* operation in |ctx|. It returns one on success and zero on error. */
-int HMAC_Update(HMAC_CTX *ctx, const uint8_t *data, size_t data_len);
+OPENSSL_EXPORT int HMAC_Update(HMAC_CTX *ctx, const uint8_t *data,
+ size_t data_len);
/* HMAC_Final completes the HMAC operation in |ctx| and writes the result to
* |out| and the sets |*out_len| to the length of the result. On entry, |out|
* must contain at least |EVP_MAX_MD_SIZE| bytes of space. It returns one on
* success or zero on error. */
-int HMAC_Final(HMAC_CTX *ctx, uint8_t *out, unsigned int *out_len);
+OPENSSL_EXPORT int HMAC_Final(HMAC_CTX *ctx, uint8_t *out,
+ unsigned int *out_len);
/* Utility functions. */
/* HMAC_size returns the size, in bytes, of the HMAC that will be produced by
* |ctx|. On entry, |ctx| must have been setup with |HMAC_Init_ex|. */
-size_t HMAC_size(const HMAC_CTX *ctx);
+OPENSSL_EXPORT size_t HMAC_size(const HMAC_CTX *ctx);
/* HMAC_CTX_copy sets |dest| equal to |src|. On entry, |dest| must have been
* initialised by calling |HMAC_CTX_init|. It returns one on success and zero
* on error. */
-int HMAC_CTX_copy(HMAC_CTX *dest, const HMAC_CTX *src);
+OPENSSL_EXPORT int HMAC_CTX_copy(HMAC_CTX *dest, const HMAC_CTX *src);
/* HMAC_CTX_set_flags ORs |flags| into the flags of the underlying digests of
* |ctx|, which must have been setup by a call to |HMAC_Init_ex|. See
* |EVP_MD_CTX_set_flags|.
*
* TODO(fork): remove? */
-void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags);
+OPENSSL_EXPORT void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags);
/* Deprecated functions. */
-int HMAC_Init(HMAC_CTX *ctx, const void *key, int key_len, const EVP_MD *md);
+OPENSSL_EXPORT int HMAC_Init(HMAC_CTX *ctx, const void *key, int key_len,
+ const EVP_MD *md);
/* Private functions */
