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/*-
* 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);
}
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