1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <string.h>
4 #include <openssl/objects.h>
5 #include <openssl/comp.h>
6
COMP_CTX_new(COMP_METHOD * meth)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
COMP_CTX_free(COMP_CTX * ctx)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
COMP_compress_block(COMP_CTX * ctx,unsigned char * out,int olen,unsigned char * in,int ilen)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
COMP_expand_block(COMP_CTX * ctx,unsigned char * out,int olen,unsigned char * in,int ilen)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 }
73