comp_lib.c revision 68651 
1#include <stdio.h>
2#include <stdlib.h>
3#include <string.h>
4#include <openssl/objects.h>
5#include <openssl/comp.h>
6
7COMP_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
30void 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
43int 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
61int 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