2 * Copyright (c) 2003-2007 Tim Kientzle
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 #include "archive_platform.h"
27 __FBSDID("$FreeBSD$");
29 #ifdef HAVE_SYS_TYPES_H
30 #include <sys/types.h>
43 #include "archive_entry.h"
44 #include "archive_private.h"
45 #include "archive_read_private.h"
46 #include "archive_write_disk_private.h"
49 struct archive *ad; /* archive_write_disk object */
51 /* Progress function invoked during extract. */
52 void (*extract_progress)(void *);
53 void *extract_progress_user_data;
56 static int archive_read_extract_cleanup(struct archive_read *);
57 static int copy_data(struct archive *ar, struct archive *aw);
58 static struct extract *get_extract(struct archive_read *);
60 static struct extract *
61 get_extract(struct archive_read *a)
63 /* If we haven't initialized, do it now. */
64 /* This also sets up a lot of global state. */
65 if (a->extract == NULL) {
66 a->extract = (struct extract *)malloc(sizeof(*a->extract));
67 if (a->extract == NULL) {
68 archive_set_error(&a->archive, ENOMEM, "Can't extract");
71 memset(a->extract, 0, sizeof(*a->extract));
72 a->extract->ad = archive_write_disk_new();
73 if (a->extract->ad == NULL) {
74 archive_set_error(&a->archive, ENOMEM, "Can't extract");
77 archive_write_disk_set_standard_lookup(a->extract->ad);
78 a->cleanup_archive_extract = archive_read_extract_cleanup;
84 archive_read_extract(struct archive *_a, struct archive_entry *entry, int flags)
86 struct extract *extract;
88 extract = get_extract((struct archive_read *)_a);
90 return (ARCHIVE_FATAL);
91 archive_write_disk_set_options(extract->ad, flags);
92 return (archive_read_extract2(_a, entry, extract->ad));
96 archive_read_extract2(struct archive *_a, struct archive_entry *entry,
99 struct archive_read *a = (struct archive_read *)_a;
102 /* Set up for this particular entry. */
103 archive_write_disk_set_skip_file(ad,
104 a->skip_file_dev, a->skip_file_ino);
105 r = archive_write_header(ad, entry);
106 if (r < ARCHIVE_WARN)
109 /* If _write_header failed, copy the error. */
110 archive_copy_error(&a->archive, ad);
111 else if (archive_entry_size(entry) > 0)
112 /* Otherwise, pour data into the entry. */
113 r = copy_data(_a, ad);
114 r2 = archive_write_finish_entry(ad);
115 if (r2 < ARCHIVE_WARN)
117 /* Use the first message. */
118 if (r2 != ARCHIVE_OK && r == ARCHIVE_OK)
119 archive_copy_error(&a->archive, ad);
120 /* Use the worst error return. */
127 archive_read_extract_set_progress_callback(struct archive *_a,
128 void (*progress_func)(void *), void *user_data)
130 struct archive_read *a = (struct archive_read *)_a;
131 struct extract *extract = get_extract(a);
132 if (extract != NULL) {
133 extract->extract_progress = progress_func;
134 extract->extract_progress_user_data = user_data;
139 copy_data(struct archive *ar, struct archive *aw)
143 struct extract *extract;
147 extract = get_extract((struct archive_read *)ar);
149 r = archive_read_data_block(ar, &buff, &size, &offset);
150 if (r == ARCHIVE_EOF)
154 r = archive_write_data_block(aw, buff, size, offset);
155 if (r < ARCHIVE_WARN)
157 if (r != ARCHIVE_OK) {
158 archive_set_error(ar, archive_errno(aw),
159 "%s", archive_error_string(aw));
162 if (extract->extract_progress)
163 (extract->extract_progress)
164 (extract->extract_progress_user_data);
169 * Cleanup function for archive_extract.
172 archive_read_extract_cleanup(struct archive_read *a)
174 int ret = ARCHIVE_OK;
176 ret = archive_write_free(a->extract->ad);