release/src/router/openssl/crypto/comp/comp.h

   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