1 /* $OpenBSD: compress_backend.c,v 1.10 2021/06/14 17:58:15 eric Exp $ */
2
3 /*
4 * Copyright (c) 2012 Charles Longeau <chl@openbsd.org>
5 * Copyright (c) 2012 Gilles Chehade <gilles@poolp.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 #include <string.h>
21
22 #include "smtpd.h"
23
24 #define BUFFER_SIZE 16364
25
26 extern struct compress_backend compress_gzip;
27
28 struct compress_backend *
compress_backend_lookup(const char * name)29 compress_backend_lookup(const char *name)
30 {
31 if (!strcmp(name, "gzip"))
32 return &compress_gzip;
33
34 return NULL;
35 }
36
37 size_t
compress_chunk(void * ib,size_t ibsz,void * ob,size_t obsz)38 compress_chunk(void *ib, size_t ibsz, void *ob, size_t obsz)
39 {
40 return (env->sc_comp->compress_chunk(ib, ibsz, ob, obsz));
41 }
42
43 size_t
uncompress_chunk(void * ib,size_t ibsz,void * ob,size_t obsz)44 uncompress_chunk(void *ib, size_t ibsz, void *ob, size_t obsz)
45 {
46 return (env->sc_comp->uncompress_chunk(ib, ibsz, ob, obsz));
47 }
48
49 int
compress_file(FILE * ifile,FILE * ofile)50 compress_file(FILE *ifile, FILE *ofile)
51 {
52 return (env->sc_comp->compress_file(ifile, ofile));
53 }
54
55 int
uncompress_file(FILE * ifile,FILE * ofile)56 uncompress_file(FILE *ifile, FILE *ofile)
57 {
58 return (env->sc_comp->uncompress_file(ifile, ofile));
59 }
60