1 files changed, 80 insertions, 0 deletions
diff --git a/include/openssl/comp.h b/include/openssl/comp.h
new file mode 100644
index 0000000000..15ad4f24c7
--- /dev/null
+++ b/include/openssl/comp.h
@@ -0,0 +1,80 @@
+
+#ifndef HEADER_COMP_H
+#define HEADER_COMP_H
+
+#include <openssl/crypto.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+typedef struct comp_ctx_st COMP_CTX;
+
+typedef 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 *COMP_CTX_new(COMP_METHOD *meth);
+void COMP_CTX_free(COMP_CTX *ctx);
+int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen,
+	unsigned char *in, int ilen);
+int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,
+	unsigned char *in, int ilen);
+COMP_METHOD *COMP_rle(void );
+COMP_METHOD *COMP_zlib(void );
+void COMP_zlib_cleanup(void);
+
+#ifdef HEADER_BIO_H
+#ifdef ZLIB
+BIO_METHOD *BIO_f_zlib(void);
+#endif
+#endif
+
+/* BEGIN ERROR CODES */
+/* The following lines are auto generated by the script mkerr.pl. Any changes
+ * made after this point may be overwritten when the script is next run.
+ */
+void ERR_load_COMP_strings(void);
+
+/* Error codes for the COMP functions. */
+
+/* Function codes. */
+#define COMP_F_BIO_ZLIB_FLUSH				 99
+#define COMP_F_BIO_ZLIB_NEW				 100
+#define COMP_F_BIO_ZLIB_READ				 101
+#define COMP_F_BIO_ZLIB_WRITE				 102
+
+/* Reason codes. */
+#define COMP_R_ZLIB_DEFLATE_ERROR			 99
+#define COMP_R_ZLIB_INFLATE_ERROR			 100
+#define COMP_R_ZLIB_NOT_SUPPORTED			 101
+
+#ifdef  __cplusplus
+}
+#endif
+#endif