aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/archivetest.c
blob: e4a25e3c911dc1dfe2e69f87aaf96f449f3b1765 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
/*-
 * Copyright (c) 2019 Martin Matuska
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Archivetest verifies reading archives with libarchive
 *
 * It may be used to reproduce failures in testcases discovered by OSS-Fuzz
 * https://github.com/google/oss-fuzz/blob/master/projects/libarchive
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <ctype.h>
#include <archive.h>
#include <archive_entry.h>

#if defined __MINGW32__
#include <getopt.h>
#endif

static const char *errnostr(int e)
{
	char *estr;
	switch(e) {
		case ARCHIVE_EOF:
			estr = "ARCHIVE_EOF";
		break;
		case ARCHIVE_OK:
			estr = "ARCHIVE_OK";
		break;
		case ARCHIVE_WARN:
			estr = "ARCHIVE_WARN";
		break;
		case ARCHIVE_RETRY:
			estr = "ARCHIVE_RETRY";
		break;
		case ARCHIVE_FAILED:
			estr = "ARCHIVE_FAILED";
		break;
		case ARCHIVE_FATAL:
			estr = "ARCHIVE_FATAL";
		break;
		default:
			estr = "Unknown";
		break;
	}
	return (estr);
}

static void usage(const char *prog)
{
	fprintf(stderr, "Usage: %s [-f filename] [-h] [-q] [-s]\n", prog);
}

static void printhelp()
{
	fprintf(stdout, "archivetest: verify reading archives with "
	    "libarchive\n\n"
	    "Options:\n"
	    "  -f filename	Filename to verify\n"
	    "  -h		Show this help\n"
	    "  -q		Quiet mode\n"
	    "  -s		Verify only headers (skip data)\n\n"
	    "If no filename is specified, data is read from standard input.\n"
	    "\n%s\n", archive_version_details());
}

static int v_print(int verbose, const char *format, ...)
{
	int r = 0;

	if (verbose) {
		va_list args;

		va_start(args, format);
		r = vfprintf(stdout, format, args);
		va_end(args);
	}
	return (r);
}

int main(int argc, char *argv[])
{
	struct archive *a;
	struct archive_entry *entry;
	char *filename;
	const char *p;
	char buffer[4096];
	int c;
	int v, skip_data;
	int r = ARCHIVE_OK;
	int format_printed;

	filename = NULL;
	skip_data = 0;
	v = 1;

	while ((c = getopt (argc, argv, "f:hqs")) != -1) {
		switch (c) {
			case 'f':
				filename = optarg;
				break;
			case 'h':
				printhelp();
				exit(0);
			case 'q':
				v = 0;
				break;
			case 's':
				skip_data = 1;
				break;
			case '?':
				if (optopt == 'f')
					fprintf(stderr, "Option -%c requires "
					    "an argument.\n", optopt);
				else if (isprint(optopt))
					fprintf(stderr, "Unknown option '-%c'"
					    ".\n", optopt);
				else
					fprintf(stderr, "Unknown option "
					    "character '\\x%x'.\n", optopt);
				usage(argv[0]);
				exit(1);
				break;
			default:
				exit(1);
		}
	}

	a = archive_read_new();

	archive_read_support_filter_all(a);
	archive_read_support_format_all(a);

	v_print(v, "Data source: ");

	if (filename == NULL) {
		v_print(v, "standard input\n");
		r = archive_read_open_fd(a, STDIN_FILENO, 4096);
	} else {
		v_print(v, "filename: %s\n", filename);
		r = archive_read_open_filename(a, filename, 4096);
	}

	if (r != ARCHIVE_OK) {
		archive_read_free(a);
		fprintf(stderr, "Invalid or unsupported data source\n");
		exit(1);
	}

	format_printed = 0;
	c = 1;

	while (1) {
		r = archive_read_next_header(a, &entry);
		if (r == ARCHIVE_FATAL) {
			v_print(v, "Entry %d: fatal error reading "
			    "header\n", c);
			break;
		}
		if (!format_printed) {
			v_print(v, "Filter: %s\nFormat: %s\n",
			    archive_filter_name(a, 0), archive_format_name(a));
			format_printed = 1;
		}
		if (r == ARCHIVE_RETRY)
			continue;
		if (r == ARCHIVE_EOF)
			break;
		p = archive_entry_pathname(entry);
		v_print(v, "Entry %d: %s, pathname", c, errnostr(r));
		if (p == NULL || p[0] == '\0')
			v_print(v, " unreadable");
		else
			v_print(v, ": %s", p);
		v_print(v, ", data: ");
		if (skip_data) {
			v_print(v, "skipping");
		} else {
			while ((r = archive_read_data(a, buffer, 4096) > 0))
			;
			if (r == ARCHIVE_FATAL) {
				v_print(v, "ERROR\nError string: %s\n",
				    archive_error_string(a));
				break;
			}
			v_print(v, "OK");
		}
		v_print(v, "\n");
		c++;
	}

	v_print(v, "Last return code: %s (%d)\n", errnostr(r), r);
	if (r == ARCHIVE_EOF || r == ARCHIVE_OK) {
		archive_read_free(a);
		exit(0);
	}
	v_print(v, "Error string: %s\n", archive_error_string(a));
	archive_read_free(a);
	exit(2);
}