1/*
2 * Copyright (c) 2007 Rob Braun
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 * 3. Neither the name of Rob Braun nor the names of his contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29/*
30 * 03-Apr-2005
31 * DRI: Rob Braun <bbraun@synack.net>
32 */
33/*
34 * Portions Copyright 2006, Apple Computer, Inc.
35 * Christopher Ryan <ryanc@apple.com>
36 */
37
38#include "arcmod.h"
39#include "archive.h"
40#include "stat.h"
41#include "data.h"
42#include "linuxattr.h"
43#include "fbsdattr.h"
44#include "darwinattr.h"
45#include "ext2.h"
46#include "xar.h"
47#include <string.h>
48
49struct arcmod xar_arcmods[] = {
50	{ xar_stat_archive, xar_stat_extract },      /* must be first */
51	{ xar_linuxattr_archive, xar_linuxattr_extract },
52	{ xar_fbsdattr_archive, xar_fbsdattr_extract },
53	{ xar_darwinattr_archive, xar_darwinattr_extract },
54	{ xar_ext2attr_archive, xar_ext2attr_extract },
55	{ xar_data_archive, xar_data_extract },
56	/* Add new modules here */
57	{ NULL, xar_set_perm },
58	{ NULL, xar_flags_extract }
59};
60
61/* xar_arcmod_archive
62 * x: archive to add the file to
63 * f: node representing the file
64 * file: the filesystem path to the file
65 * Returns: 0 on success
66 * Summary: This is the entry point to actual file archival.
67 */
68int32_t xar_arcmod_archive(xar_t x, xar_file_t f, const char *file, const char *buffer, size_t len) {
69	int i;
70	int32_t ret;
71	for(i = 0; i < (sizeof(xar_arcmods)/sizeof(struct arcmod)); i++) {
72		if( xar_arcmods[i].archive ) {
73			ret = xar_arcmods[i].archive(x, f, file, buffer, len);
74			if( ret < 0 ) {
75				return ret;
76			}
77			if( ret > 0 ) {
78				return 0;
79			}
80		}
81	}
82	return 0;
83}
84
85/* xar_arcmod_extract
86 * x: archive to extract the file from
87 * f: node representing the file
88 * file: the filesystem path to the target file
89 * Returns: 0 on success
90 * Summary: This is the entry point to actual file archival.
91 */
92int32_t xar_arcmod_extract(xar_t x, xar_file_t f, const char *file, char *buffer, size_t len) {
93	int i;
94	int32_t ret;
95	for(i = 0; i < (sizeof(xar_arcmods)/sizeof(struct arcmod)); i++) {
96		if( xar_arcmods[i].extract ) {
97			ret = xar_arcmods[i].extract(x, f, file, buffer, len);
98			if( ret < 0 ) {
99				return ret;
100			}
101			if( ret > 0 ) {
102				return 0;
103			}
104		}
105	}
106	return 0;
107}
108
109
110int32_t xar_arcmod_verify(xar_t x, xar_file_t f){
111	return xar_data_verify(x,f);
112}
113
114/* xar_check_prop
115 * x: xar archive
116 * name: name of property to check
117 * Description: If XAR_OPT_PROPINCLUDE is set at all, only properties
118 * specified for inclusion will be added.
119 * If XAR_OPT_PROPINCLUDE is not set, and XAR_OPT_PROPEXCLUDE is set,
120 * properies specified by XAR_OPT_PROPEXCLUDE will be omitted.
121 * Returns: 0 for not to include, 1 for include.
122 */
123int32_t xar_check_prop(xar_t x, const char *name) {
124	xar_attr_t i;
125	char includeset = 0;
126
127	for(i = XAR(x)->attrs; i; i = XAR_ATTR(i)->next) {
128		if( strcmp(XAR_ATTR(i)->key, XAR_OPT_PROPINCLUDE) == 0 ) {
129			if( strcmp(XAR_ATTR(i)->value, name) == 0 )
130				return 1;
131			includeset = 1;
132		}
133	}
134
135	if( includeset )
136		return 0;
137
138	for(i = XAR(x)->attrs; i; i = XAR_ATTR(i)->next) {
139		if( strcmp(XAR_ATTR(i)->key, XAR_OPT_PROPEXCLUDE) == 0 ) {
140			if( strcmp(XAR_ATTR(i)->value, name) == 0 )
141				return 0;
142		}
143	}
144
145	return 1;
146}
147