1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <string.h> 4 #include <openssl/objects.h> 5 #include <openssl/comp.h> 6 7 COMP_CTX *COMP_CTX_new(COMP_METHOD *meth) 8 { 9 COMP_CTX *ret; 10 11 if ((ret=(COMP_CTX *)OPENSSL_malloc(sizeof(COMP_CTX))) == NULL) 12 { 13 /* ZZZZZZZZZZZZZZZZ */ 14 return(NULL); 15 } 16 memset(ret,0,sizeof(COMP_CTX)); 17 ret->meth=meth; 18 if ((ret->meth->init != NULL) && !ret->meth->init(ret)) 19 { 20 OPENSSL_free(ret); 21 ret=NULL; 22 } 23 #if 0 24 else 25 CRYPTO_new_ex_data(rsa_meth,(char *)ret,&ret->ex_data); 26 #endif 27 return(ret); 28 } 29 30 void COMP_CTX_free(COMP_CTX *ctx) 31 { 32 /* CRYPTO_free_ex_data(rsa_meth,(char *)ctx,&ctx->ex_data); */ 33 34 if(ctx == NULL) 35 return; 36 37 if (ctx->meth->finish != NULL) 38 ctx->meth->finish(ctx); 39 40 OPENSSL_free(ctx); 41 } 42 43 int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen, 44 unsigned char *in, int ilen) 45 { 46 int ret; 47 if (ctx->meth->compress == NULL) 48 { 49 /* ZZZZZZZZZZZZZZZZZ */ 50 return(-1); 51 } 52 ret=ctx->meth->compress(ctx,out,olen,in,ilen); 53 if (ret > 0) 54 { 55 ctx->compress_in+=ilen; 56 ctx->compress_out+=ret; 57 } 58 return(ret); 59 } 60 61 int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen, 62 unsigned char *in, int ilen) 63 { 64 int ret; 65 66 if (ctx->meth->expand == NULL) 67 { 68 /* ZZZZZZZZZZZZZZZZZ */ 69 return(-1); 70 } 71 ret=ctx->meth->expand(ctx,out,olen,in,ilen); 72 if (ret > 0) 73 { 74 ctx->expand_in+=ilen; 75 ctx->expand_out+=ret; 76 } 77 return(ret); 78 } 79