diff options
Diffstat (limited to 'smtpd/compress_gzip.c')
| -rw-r--r-- | smtpd/compress_gzip.c | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/smtpd/compress_gzip.c b/smtpd/compress_gzip.c deleted file mode 100644 index dd60aeec..00000000 --- a/smtpd/compress_gzip.c +++ /dev/null @@ -1,186 +0,0 @@ -/* $OpenBSD: compress_gzip.c,v 1.10 2015/12/28 22:08:30 jung Exp $ */ - -/* - * Copyright (c) 2012 Gilles Chehade <gilles@poolp.org> - * Copyright (c) 2012 Charles Longeau <chl@openbsd.org> - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "includes.h" - -#include <sys/types.h> -#include <sys/queue.h> -#include <sys/tree.h> -#include <sys/socket.h> -#include <sys/stat.h> - -#include <ctype.h> -#include <err.h> -#include <fcntl.h> -#include <imsg.h> -#include <pwd.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <limits.h> - -#include <zlib.h> - -#include "smtpd.h" -#include "log.h" - - -#define GZIP_BUFFER_SIZE 16384 - - -static size_t compress_gzip_chunk(void *, size_t, void *, size_t); -static size_t uncompress_gzip_chunk(void *, size_t, void *, size_t); -static int compress_gzip_file(FILE *, FILE *); -static int uncompress_gzip_file(FILE *, FILE *); - - -struct compress_backend compress_gzip = { - compress_gzip_chunk, - uncompress_gzip_chunk, - - compress_gzip_file, - uncompress_gzip_file, -}; - -static size_t -compress_gzip_chunk(void *ib, size_t ibsz, void *ob, size_t obsz) -{ - z_stream *strm; - size_t ret = 0; - - if ((strm = calloc(1, sizeof *strm)) == NULL) - return 0; - - strm->zalloc = Z_NULL; - strm->zfree = Z_NULL; - strm->opaque = Z_NULL; - if (deflateInit2(strm, Z_DEFAULT_COMPRESSION, Z_DEFLATED, - (15+16), 8, Z_DEFAULT_STRATEGY) != Z_OK) - goto end; - - strm->avail_in = ibsz; - strm->next_in = (unsigned char *)ib; - strm->avail_out = obsz; - strm->next_out = (unsigned char *)ob; - if (deflate(strm, Z_FINISH) != Z_STREAM_END) - goto end; - - ret = strm->total_out; - -end: - deflateEnd(strm); - free(strm); - return ret; -} - - -static size_t -uncompress_gzip_chunk(void *ib, size_t ibsz, void *ob, size_t obsz) -{ - z_stream *strm; - size_t ret = 0; - - if ((strm = calloc(1, sizeof *strm)) == NULL) - return 0; - - strm->zalloc = Z_NULL; - strm->zfree = Z_NULL; - strm->opaque = Z_NULL; - strm->avail_in = 0; - strm->next_in = Z_NULL; - - if (inflateInit2(strm, (15+16)) != Z_OK) - goto end; - - strm->avail_in = ibsz; - strm->next_in = (unsigned char *)ib; - strm->avail_out = obsz; - strm->next_out = (unsigned char *)ob; - - if (inflate(strm, Z_FINISH) != Z_STREAM_END) - goto end; - - ret = strm->total_out; - -end: - deflateEnd(strm); - free(strm); - return ret; -} - - -static int -compress_gzip_file(FILE *in, FILE *out) -{ - gzFile gzf; - char ibuf[GZIP_BUFFER_SIZE]; - int r, w; - int ret = 0; - - if (in == NULL || out == NULL) - return (0); - - gzf = gzdopen(fileno(out), "wb"); - if (gzf == NULL) - return (0); - - while ((r = fread(ibuf, 1, GZIP_BUFFER_SIZE, in)) != 0) { - if ((w = gzwrite(gzf, ibuf, r)) != r) - goto end; - } - if (!feof(in)) - goto end; - - ret = 1; - -end: - gzclose(gzf); - return (ret); -} - - -static int -uncompress_gzip_file(FILE *in, FILE *out) -{ - gzFile gzf; - char obuf[GZIP_BUFFER_SIZE]; - int r, w; - int ret = 0; - - if (in == NULL || out == NULL) - return (0); - - gzf = gzdopen(fileno(in), "r"); - if (gzf == NULL) - return (0); - - while ((r = gzread(gzf, obuf, sizeof(obuf))) > 0) { - if ((w = fwrite(obuf, r, 1, out)) != 1) - goto end; - } - if (!gzeof(gzf)) - goto end; - - ret = 1; - -end: - gzclose(gzf); - return (ret); -} |