archive_read_set_options.c revision 232153 
1/*-
2 * Copyright (c) 2011 Tim Kientzle
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__FBSDID("$FreeBSD$");
28
29#include "archive_read_private.h"
30#include "archive_options_private.h"
31
32static int	archive_set_format_option(struct archive *a,
33		    const char *m, const char *o, const char *v);
34static int	archive_set_filter_option(struct archive *a,
35		    const char *m, const char *o, const char *v);
36static int	archive_set_option(struct archive *a,
37		    const char *m, const char *o, const char *v);
38
39int
40archive_read_set_format_option(struct archive *a, const char *m, const char *o,
41    const char *v)
42{
43	return _archive_set_option(a, m, o, v,
44	    ARCHIVE_READ_MAGIC, "archive_read_set_format_option",
45	    archive_set_format_option);
46}
47
48int
49archive_read_set_filter_option(struct archive *a, const char *m, const char *o,
50    const char *v)
51{
52	return _archive_set_option(a, m, o, v,
53	    ARCHIVE_READ_MAGIC, "archive_read_set_filter_option",
54	    archive_set_filter_option);
55}
56
57int
58archive_read_set_option(struct archive *a, const char *m, const char *o,
59    const char *v)
60{
61	return _archive_set_option(a, m, o, v,
62	    ARCHIVE_READ_MAGIC, "archive_read_set_option",
63	    archive_set_option);
64}
65
66int
67archive_read_set_options(struct archive *a, const char *options)
68{
69	return _archive_set_options(a, options,
70	    ARCHIVE_READ_MAGIC, "archive_read_set_options",
71	    archive_set_option);
72}
73
74static int
75archive_set_format_option(struct archive *_a, const char *m, const char *o,
76    const char *v)
77{
78	struct archive_read *a = (struct archive_read *)_a;
79	struct archive_format_descriptor *format;
80	size_t i;
81	int r, rv = ARCHIVE_WARN;
82
83	for (i = 0; i < sizeof(a->formats)/sizeof(a->formats[0]); i++) {
84		format = &a->formats[i];
85		if (format == NULL || format->options == NULL ||
86		    format->name == NULL)
87			/* This format does not support option. */
88			continue;
89		if (m != NULL && strcmp(format->name, m) != 0)
90			continue;
91
92		a->format = format;
93		r = format->options(a, o, v);
94		a->format = NULL;
95
96		if (r == ARCHIVE_FATAL)
97			return (ARCHIVE_FATAL);
98
99		if (m != NULL)
100			return (r);
101
102		if (r == ARCHIVE_OK)
103			rv = ARCHIVE_OK;
104	}
105	/* If the format name didn't match, return a special code for
106	 * _archive_set_option[s]. */
107	if (rv == ARCHIVE_WARN && m != NULL)
108		rv = ARCHIVE_WARN - 1;
109	return (rv);
110}
111
112static int
113archive_set_filter_option(struct archive *_a, const char *m, const char *o,
114    const char *v)
115{
116	struct archive_read *a = (struct archive_read *)_a;
117	struct archive_read_filter *filter;
118	struct archive_read_filter_bidder *bidder;
119	int r, rv = ARCHIVE_WARN;
120
121	for (filter = a->filter; filter != NULL; filter = filter->upstream) {
122		bidder = filter->bidder;
123		if (bidder == NULL)
124			continue;
125		if (bidder->options == NULL)
126			/* This bidder does not support option */
127			continue;
128		if (m != NULL && strcmp(filter->name, m) != 0)
129			continue;
130
131		r = bidder->options(bidder, o, v);
132
133		if (r == ARCHIVE_FATAL)
134			return (ARCHIVE_FATAL);
135
136		if (m != NULL)
137			return (r);
138
139		if (r == ARCHIVE_OK)
140			rv = ARCHIVE_OK;
141	}
142	/* If the filter name didn't match, return a special code for
143	 * _archive_set_option[s]. */
144	if (rv == ARCHIVE_WARN && m != NULL)
145		rv = ARCHIVE_WARN - 1;
146	return (rv);
147}
148
149static int
150archive_set_option(struct archive *a, const char *m, const char *o,
151    const char *v)
152{
153	return _archive_set_either_option(a, m, o, v,
154	    archive_set_format_option,
155	    archive_set_filter_option);
156}
157