Make structs in comp.h opaque

This moves COMP_CTX and COMP_METHOD to comp_local.h and provides
missing typedefs in ossl_typ.h.

ok inoguchi jsing

1 files changed, 27 insertions, 1 deletions

diff --git a/src/lib/libcrypto/comp/comp_local.h b/src/lib/libcrypto/comp/comp_local.h
index e1dfff1251..fc1888711b 100644
--- a/src/lib/libcrypto/comp/comp_local.h
+++ b/src/lib/libcrypto/comp/comp_local.h
@@ -1,10 +1,36 @@
-/* $OpenBSD: comp_local.h,v 1.1 2022/01/09 23:50:10 tb Exp $ */
+/* $OpenBSD: comp_local.h,v 1.2 2022/01/14 08:21:12 tb Exp $ */
 
 #ifndef HEADER_COMP_LOCAL_H
 #define HEADER_COMP_LOCAL_H
 
 __BEGIN_HIDDEN_DECLS
 
+struct CMP_CTX;
+
+struct comp_method_st {
+        int type;               /* NID for compression library */
+        const char *name;       /* A text string to identify the library */
+        int (*init)(COMP_CTX *ctx);
+        void (*finish)(COMP_CTX *ctx);
+        int (*compress)(COMP_CTX *ctx, unsigned char *out, unsigned int olen,
+            unsigned char *in, unsigned int ilen);
+        int (*expand)(COMP_CTX *ctx, unsigned char *out, unsigned int olen,
+            unsigned char *in, unsigned int ilen);
+        /* The following two do NOTHING, but are kept for backward compatibility */
+        long (*ctrl)(void);
+        long (*callback_ctrl)(void);
+} /* COMP_METHOD */;
+
+struct comp_ctx_st {
+        COMP_METHOD *meth;
+        unsigned long compress_in;
+        unsigned long compress_out;
+        unsigned long expand_in;
+        unsigned long expand_out;
+
+        CRYPTO_EX_DATA  ex_data;
+} /* COMP_CTX */;
+
 __END_HIDDEN_DECLS
 
 #endif /* !HEADER_COMP_LOCAL_H */