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: src/lib/libarchive/archive_read_extract.c,v 1.54 2007/03/11 10:29:52 kientzle Exp $");
29 #ifdef HAVE_SYS_TYPES_H
30 #include <sys/types.h>
43 #include "archive_private.h"
44 #include "archive_read_private.h"
45 #include "archive_write_disk_private.h"
48 struct archive
*ad
; /* archive_write_disk object */
50 /* Progress function invoked during extract. */
51 void (*extract_progress
)(void *);
52 void *extract_progress_user_data
;
55 static int archive_read_extract_cleanup(struct archive_read
*);
56 static int copy_data(struct archive
*ar
, struct archive
*aw
);
57 static struct extract
*get_extract(struct archive_read
*);
59 static struct extract
*
60 get_extract(struct archive_read
*a
)
62 /* If we haven't initialized, do it now. */
63 /* This also sets up a lot of global state. */
64 if (a
->extract
== NULL
) {
65 a
->extract
= (struct extract
*)malloc(sizeof(*a
->extract
));
66 if (a
->extract
== NULL
) {
67 archive_set_error(&a
->archive
, ENOMEM
, "Can't extract");
70 a
->extract
->ad
= archive_write_disk_new();
71 if (a
->extract
->ad
== NULL
) {
72 archive_set_error(&a
->archive
, ENOMEM
, "Can't extract");
75 archive_write_disk_set_standard_lookup(a
->extract
->ad
);
76 a
->cleanup_archive_extract
= archive_read_extract_cleanup
;
82 archive_read_extract(struct archive
*_a
, struct archive_entry
*entry
, int flags
)
84 struct archive_read
*a
= (struct archive_read
*)_a
;
85 struct extract
*extract
;
88 extract
= get_extract(a
);
90 return (ARCHIVE_FATAL
);
92 /* Set up for this particular entry. */
94 archive_write_disk_set_options(a
->extract
->ad
, flags
);
95 archive_write_disk_set_skip_file(a
->extract
->ad
,
96 a
->skip_file_dev
, a
->skip_file_ino
);
97 r
= archive_write_header(a
->extract
->ad
, entry
);
99 /* If there's an FD, pour data into it. */
100 r
= copy_data(_a
, a
->extract
->ad
);
102 archive_set_error(&a
->archive
,
103 archive_errno(extract
->ad
),
104 "%s", archive_error_string(extract
->ad
));
105 r2
= archive_write_finish_entry(a
->extract
->ad
);
106 /* Use the first message. */
107 if (r2
!= ARCHIVE_OK
&& r
== ARCHIVE_OK
)
108 archive_set_error(&a
->archive
,
109 archive_errno(extract
->ad
),
110 "%s", archive_error_string(extract
->ad
));
111 /* Use the worst error return. */
118 archive_read_extract_set_progress_callback(struct archive
*_a
,
119 void (*progress_func
)(void *), void *user_data
)
121 struct archive_read
*a
= (struct archive_read
*)_a
;
122 struct extract
*extract
= get_extract(a
);
123 if (extract
!= NULL
) {
124 extract
->extract_progress
= progress_func
;
125 extract
->extract_progress_user_data
= user_data
;
130 copy_data(struct archive
*ar
, struct archive
*aw
)
138 r
= archive_read_data_block(ar
, &buff
, &size
, &offset
);
139 if (r
== ARCHIVE_EOF
)
143 r
= archive_write_data_block(aw
, buff
, size
, offset
);
150 * Cleanup function for archive_extract.
153 archive_read_extract_cleanup(struct archive_read
*a
)
155 int ret
= ARCHIVE_OK
;
157 #if ARCHIVE_API_VERSION > 1
160 archive_write_finish(a
->extract
->ad
);