1 /*-
2 * Copyright (c) 2013 Marek Kubica
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
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.
24 */
25
26 #include "archive_platform.h"
27
28 #ifdef HAVE_ERRNO_H
29 #include <errno.h>
30 #endif
31
32 #include "archive_entry.h"
33 #include "archive_write_private.h"
34
35 static ssize_t archive_write_raw_data(struct archive_write *,
36 const void *buff, size_t s);
37 static int archive_write_raw_free(struct archive_write *);
38 static int archive_write_raw_header(struct archive_write *,
39 struct archive_entry *);
40
41 struct raw {
42 int entries_written;
43 };
44
45 /*
46 * Set output format to 'raw' format.
47 */
48 int
archive_write_set_format_raw(struct archive * _a)49 archive_write_set_format_raw(struct archive *_a)
50 {
51 struct archive_write *a = (struct archive_write *)_a;
52 struct raw *raw;
53
54 archive_check_magic(_a, ARCHIVE_WRITE_MAGIC,
55 ARCHIVE_STATE_NEW, "archive_write_set_format_raw");
56
57 /* If someone else was already registered, unregister them. */
58 (void)__archive_write_unregister_format(a);
59
60 raw = calloc(1, sizeof(*raw));
61 if (raw == NULL) {
62 archive_set_error(&a->archive, ENOMEM, "Can't allocate raw data");
63 return (ARCHIVE_FATAL);
64 }
65 raw->entries_written = 0;
66 a->format_data = raw;
67 a->format_name = "raw";
68 /* no options exist for this format */
69 a->format_options = NULL;
70 a->format_write_header = archive_write_raw_header;
71 a->format_write_data = archive_write_raw_data;
72 a->format_finish_entry = NULL;
73 /* nothing needs to be done on closing */
74 a->format_close = NULL;
75 a->format_free = archive_write_raw_free;
76 a->archive.archive_format = ARCHIVE_FORMAT_RAW;
77 a->archive.archive_format_name = "RAW";
78 return (ARCHIVE_OK);
79 }
80
81 static int
archive_write_raw_header(struct archive_write * a,struct archive_entry * entry)82 archive_write_raw_header(struct archive_write *a, struct archive_entry *entry)
83 {
84 struct raw *raw = a->format_data;
85
86 if (archive_entry_filetype(entry) != AE_IFREG) {
87 archive_set_error(&a->archive, ERANGE,
88 "Raw format only supports filetype AE_IFREG");
89 return (ARCHIVE_FATAL);
90 }
91
92
93 if (raw->entries_written > 0) {
94 archive_set_error(&a->archive, ERANGE,
95 "Raw format only supports one entry per archive");
96 return (ARCHIVE_FATAL);
97 }
98 raw->entries_written++;
99
100 return (ARCHIVE_OK);
101 }
102
103 static ssize_t
archive_write_raw_data(struct archive_write * a,const void * buff,size_t s)104 archive_write_raw_data(struct archive_write *a, const void *buff, size_t s)
105 {
106 int ret;
107
108 ret = __archive_write_output(a, buff, s);
109 if (ret >= 0)
110 return (s);
111 else
112 return (ret);
113 }
114
115 static int
archive_write_raw_free(struct archive_write * a)116 archive_write_raw_free(struct archive_write *a)
117 {
118 struct raw *raw = a->format_data;
119
120 free(raw);
121 a->format_data = NULL;
122 return (ARCHIVE_OK);
123 }
124