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| 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 | |
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