| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <openssl/objects.h> |
| #include <openssl/comp.h> |
| |
| COMP_CTX *COMP_CTX_new(COMP_METHOD *meth) |
| { |
| COMP_CTX *ret; |
| |
| if ((ret = (COMP_CTX *)OPENSSL_malloc(sizeof(COMP_CTX))) == NULL) { |
| /* ZZZZZZZZZZZZZZZZ */ |
| return (NULL); |
| } |
| memset(ret, 0, sizeof(COMP_CTX)); |
| ret->meth = meth; |
| if ((ret->meth->init != NULL) && !ret->meth->init(ret)) { |
| OPENSSL_free(ret); |
| ret = NULL; |
| } |
| return (ret); |
| } |
| |
| void COMP_CTX_free(COMP_CTX *ctx) |
| { |
| if (ctx == NULL) |
| return; |
| |
| if (ctx->meth->finish != NULL) |
| ctx->meth->finish(ctx); |
| |
| OPENSSL_free(ctx); |
| } |
| |
| int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen, |
| unsigned char *in, int ilen) |
| { |
| int ret; |
| if (ctx->meth->compress == NULL) { |
| /* ZZZZZZZZZZZZZZZZZ */ |
| return (-1); |
| } |
| ret = ctx->meth->compress(ctx, out, olen, in, ilen); |
| if (ret > 0) { |
| ctx->compress_in += ilen; |
| ctx->compress_out += ret; |
| } |
| return (ret); |
| } |
| |
| int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen, |
| unsigned char *in, int ilen) |
| { |
| int ret; |
| |
| if (ctx->meth->expand == NULL) { |
| /* ZZZZZZZZZZZZZZZZZ */ |
| return (-1); |
| } |
| ret = ctx->meth->expand(ctx, out, olen, in, ilen); |
| if (ret > 0) { |
| ctx->expand_in += ilen; |
| ctx->expand_out += ret; |
| } |
| return (ret); |
| } |