1de7b4b805
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
146 lines
4.1 KiB
C
146 lines
4.1 KiB
C
/* $NetBSD: unbzip2.c,v 1.14 2017/08/04 07:27:08 mrg Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-NetBSD
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*
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* Copyright (c) 2006 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Simon Burge.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/* This file is #included by gzip.c */
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static off_t
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unbzip2(int in, int out, char *pre, size_t prelen, off_t *bytes_in)
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{
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int ret, end_of_file, cold = 0;
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off_t bytes_out = 0;
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bz_stream bzs;
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static char *inbuf, *outbuf;
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if (inbuf == NULL)
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inbuf = malloc(BUFLEN);
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if (outbuf == NULL)
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outbuf = malloc(BUFLEN);
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if (inbuf == NULL || outbuf == NULL)
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maybe_err("malloc");
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bzs.bzalloc = NULL;
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bzs.bzfree = NULL;
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bzs.opaque = NULL;
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end_of_file = 0;
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ret = BZ2_bzDecompressInit(&bzs, 0, 0);
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if (ret != BZ_OK)
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maybe_errx("bzip2 init");
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/* Prepend. */
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bzs.avail_in = prelen;
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bzs.next_in = pre;
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if (bytes_in)
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*bytes_in = prelen;
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while (ret == BZ_OK) {
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check_siginfo();
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if (bzs.avail_in == 0 && !end_of_file) {
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ssize_t n;
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n = read(in, inbuf, BUFLEN);
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if (n < 0)
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maybe_err("read");
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if (n == 0)
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end_of_file = 1;
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infile_newdata(n);
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bzs.next_in = inbuf;
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bzs.avail_in = n;
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if (bytes_in)
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*bytes_in += n;
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}
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bzs.next_out = outbuf;
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bzs.avail_out = BUFLEN;
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ret = BZ2_bzDecompress(&bzs);
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switch (ret) {
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case BZ_STREAM_END:
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case BZ_OK:
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if (ret == BZ_OK && end_of_file) {
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/*
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* If we hit this after a stream end, consider
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* it as the end of the whole file and don't
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* bail out.
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*/
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if (cold == 1)
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ret = BZ_STREAM_END;
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else
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maybe_errx("truncated file");
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}
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cold = 0;
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if (!tflag && bzs.avail_out != BUFLEN) {
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ssize_t n;
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n = write(out, outbuf, BUFLEN - bzs.avail_out);
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if (n < 0)
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maybe_err("write");
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bytes_out += n;
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}
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if (ret == BZ_STREAM_END && !end_of_file) {
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if (BZ2_bzDecompressEnd(&bzs) != BZ_OK ||
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BZ2_bzDecompressInit(&bzs, 0, 0) != BZ_OK)
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maybe_errx("bzip2 re-init");
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cold = 1;
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ret = BZ_OK;
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}
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break;
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case BZ_DATA_ERROR:
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maybe_warnx("bzip2 data integrity error");
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break;
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case BZ_DATA_ERROR_MAGIC:
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maybe_warnx("bzip2 magic number error");
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break;
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case BZ_MEM_ERROR:
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maybe_warnx("bzip2 out of memory");
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break;
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default:
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maybe_warnx("unknown bzip2 error: %d", ret);
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break;
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}
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}
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if (ret != BZ_STREAM_END || BZ2_bzDecompressEnd(&bzs) != BZ_OK)
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return (-1);
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return (bytes_out);
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}
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