Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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 | return(ret); |
| 24 | } |
| 25 | |
| 26 | void COMP_CTX_free(COMP_CTX *ctx) |
| 27 | { |
| 28 | if(ctx == NULL) |
| 29 | return; |
| 30 | |
| 31 | if (ctx->meth->finish != NULL) |
| 32 | ctx->meth->finish(ctx); |
| 33 | |
| 34 | OPENSSL_free(ctx); |
| 35 | } |
| 36 | |
| 37 | int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen, |
| 38 | unsigned char *in, int ilen) |
| 39 | { |
| 40 | int ret; |
| 41 | if (ctx->meth->compress == NULL) |
| 42 | { |
| 43 | /* ZZZZZZZZZZZZZZZZZ */ |
| 44 | return(-1); |
| 45 | } |
| 46 | ret=ctx->meth->compress(ctx,out,olen,in,ilen); |
| 47 | if (ret > 0) |
| 48 | { |
| 49 | ctx->compress_in+=ilen; |
| 50 | ctx->compress_out+=ret; |
| 51 | } |
| 52 | return(ret); |
| 53 | } |
| 54 | |
| 55 | int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen, |
| 56 | unsigned char *in, int ilen) |
| 57 | { |
| 58 | int ret; |
| 59 | |
| 60 | if (ctx->meth->expand == NULL) |
| 61 | { |
| 62 | /* ZZZZZZZZZZZZZZZZZ */ |
| 63 | return(-1); |
| 64 | } |
| 65 | ret=ctx->meth->expand(ctx,out,olen,in,ilen); |
| 66 | if (ret > 0) |
| 67 | { |
| 68 | ctx->expand_in+=ilen; |
| 69 | ctx->expand_out+=ret; |
| 70 | } |
| 71 | return(ret); |
| 72 | } |