1 2 #ifndef HEADER_COMP_H 3 #define HEADER_COMP_H 4 5 #include <openssl/crypto.h> 6 7 #ifdef __cplusplus 8 extern "C" { 9 #endif 10 11 typedef struct comp_ctx_st COMP_CTX; 12 13 typedef struct comp_method_st 14 { 15 int type; /* NID for compression library */ 16 const char *name; /* A text string to identify the library */ 17 int (*init)(COMP_CTX *ctx); 18 void (*finish)(COMP_CTX *ctx); 19 int (*compress)(COMP_CTX *ctx, 20 unsigned char *out, unsigned int olen, 21 unsigned char *in, unsigned int ilen); 22 int (*expand)(COMP_CTX *ctx, 23 unsigned char *out, unsigned int olen, 24 unsigned char *in, unsigned int ilen); 25 /* The following two do NOTHING, but are kept for backward compatibility */ 26 long (*ctrl)(void); 27 long (*callback_ctrl)(void); 28 } COMP_METHOD; 29 30 struct comp_ctx_st 31 { 32 COMP_METHOD *meth; 33 unsigned long compress_in; 34 unsigned long compress_out; 35 unsigned long expand_in; 36 unsigned long expand_out; 37 38 CRYPTO_EX_DATA ex_data; 39 }; 40 41 42 COMP_CTX *COMP_CTX_new(COMP_METHOD *meth); 43 void COMP_CTX_free(COMP_CTX *ctx); 44 int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen, 45 unsigned char *in, int ilen); 46 int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen, 47 unsigned char *in, int ilen); 48 COMP_METHOD *COMP_rle(void ); 49 COMP_METHOD *COMP_zlib(void ); 50 void COMP_zlib_cleanup(void); 51 52 #ifdef HEADER_BIO_H 53 #ifdef ZLIB 54 BIO_METHOD *BIO_f_zlib(void); 55 #endif 56 #endif 57 58 /* BEGIN ERROR CODES */ 59 /* The following lines are auto generated by the script mkerr.pl. Any changes 60 * made after this point may be overwritten when the script is next run. 61 */ 62 void ERR_load_COMP_strings(void); 63 64 /* Error codes for the COMP functions. */ 65 66 /* Function codes. */ 67 #define COMP_F_BIO_ZLIB_FLUSH 99 68 #define COMP_F_BIO_ZLIB_NEW 100 69 #define COMP_F_BIO_ZLIB_READ 101 70 #define COMP_F_BIO_ZLIB_WRITE 102 71 72 /* Reason codes. */ 73 #define COMP_R_ZLIB_DEFLATE_ERROR 99 74 #define COMP_R_ZLIB_INFLATE_ERROR 100 75 #define COMP_R_ZLIB_NOT_SUPPORTED 101 76 77 #ifdef __cplusplus 78 } 79 #endif 80 #endif 81