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