138 lines
4.2 KiB
C
138 lines
4.2 KiB
C
/*-
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* Copyright (c) 2003-2007 Tim Kientzle
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* All rights reserved.
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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 AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "archive_platform.h"
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__FBSDID("$FreeBSD: src/lib/libarchive/archive_read_extract.c,v 1.61 2008/05/26 17:00:22 kientzle Exp $");
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#include "archive.h"
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#include "archive_entry.h"
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#include "archive_private.h"
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#include "archive_read_private.h"
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static int copy_data(struct archive *ar, struct archive *aw);
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/* Retrieve an extract object without initialising the associated
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* archive_write_disk object.
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*/
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struct archive_read_extract *
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__archive_read_get_extract(struct archive_read *a)
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{
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if (a->extract == NULL) {
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a->extract = (struct archive_read_extract *)malloc(sizeof(*a->extract));
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if (a->extract == NULL) {
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archive_set_error(&a->archive, ENOMEM, "Can't extract");
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return (NULL);
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}
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memset(a->extract, 0, sizeof(*a->extract));
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}
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return (a->extract);
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}
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int
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archive_read_extract2(struct archive *_a, struct archive_entry *entry,
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struct archive *ad)
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{
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struct archive_read *a = (struct archive_read *)_a;
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int r, r2;
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/* Set up for this particular entry. */
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if (a->skip_file_set)
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archive_write_disk_set_skip_file(ad,
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a->skip_file_dev, a->skip_file_ino);
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r = archive_write_header(ad, entry);
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if (r < ARCHIVE_WARN)
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r = ARCHIVE_WARN;
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if (r != ARCHIVE_OK)
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/* If _write_header failed, copy the error. */
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archive_copy_error(&a->archive, ad);
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else if (!archive_entry_size_is_set(entry) || archive_entry_size(entry) > 0)
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/* Otherwise, pour data into the entry. */
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r = copy_data(_a, ad);
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r2 = archive_write_finish_entry(ad);
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if (r2 < ARCHIVE_WARN)
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r2 = ARCHIVE_WARN;
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/* Use the first message. */
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if (r2 != ARCHIVE_OK && r == ARCHIVE_OK)
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archive_copy_error(&a->archive, ad);
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/* Use the worst error return. */
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if (r2 < r)
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r = r2;
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return (r);
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}
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void
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archive_read_extract_set_progress_callback(struct archive *_a,
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void (*progress_func)(void *), void *user_data)
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{
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struct archive_read *a = (struct archive_read *)_a;
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struct archive_read_extract *extract = __archive_read_get_extract(a);
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if (extract != NULL) {
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extract->extract_progress = progress_func;
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extract->extract_progress_user_data = user_data;
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}
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}
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static int
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copy_data(struct archive *ar, struct archive *aw)
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{
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int64_t offset;
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const void *buff;
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struct archive_read_extract *extract;
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size_t size;
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int r;
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extract = __archive_read_get_extract((struct archive_read *)ar);
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if (extract == NULL)
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return (ARCHIVE_FATAL);
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for (;;) {
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r = archive_read_data_block(ar, &buff, &size, &offset);
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if (r == ARCHIVE_EOF)
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return (ARCHIVE_OK);
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if (r != ARCHIVE_OK)
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return (r);
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r = (int)archive_write_data_block(aw, buff, size, offset);
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if (r < ARCHIVE_WARN)
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r = ARCHIVE_WARN;
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if (r != ARCHIVE_OK) {
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archive_set_error(ar, archive_errno(aw),
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"%s", archive_error_string(aw));
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return (r);
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}
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if (extract->extract_progress)
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(extract->extract_progress)
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(extract->extract_progress_user_data);
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}
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}
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