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/* Selectively compare two ar archives.
* Usage:
* ardiff [-ni] [-t name] ar1 ar2
* Options:
* -c compare member content. (This implies -s)
* -n compare member name.
* -i compare member mtime.
* -l compare archive length (member count).
* -s compare member size.
* -t specify the test name.
*
* By default, it compares nothing and consider the test "not ok"
* iff it encounters errors while reading archive.
*
* $Id: ardiff.c 3364 2016-01-24 21:23:17Z jkoshy $
*/
#include <archive.h>
#include <archive_entry.h>
#include <err.h>
#include <errno.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define COUNTER "/tmp/bsdar-test-total"
#define PASSED "/tmp/bsdar-test-passed"
static void usage(void);
static void filediff(const char *tc, const char *msg, const char *e);
static void filesame(const char *tc);
static void incct(const char *pathname);
int
main(int argc, char **argv)
{
struct archive *a1;
struct archive *a2;
struct archive_entry *e1;
struct archive_entry *e2;
const char *tc;
char *buf1;
char *buf2;
char checkcont;
char checklen;
char checkname;
char checksize;
char checktime;
char a1end;
size_t size1;
size_t size2;
int opt, r;
/*
* Parse command line options.
*/
checkcont = 0;
checklen = 0;
checkname = 0;
checksize = 0;
checktime = 0;
tc = NULL;
while ((opt = getopt(argc, argv, "cilnst:")) != -1) {
switch(opt) {
case 'c':
checkcont = 1;
break;
case 'i':
checktime = 1;
break;
case 'l':
checklen = 1;
break;
case 'n':
checkname = 1;
break;
case 's':
checksize = 1;
case 't':
tc = optarg;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc != 2)
usage();
/* Open file 1 */
a1 = archive_read_new();
archive_read_support_format_ar(a1);
if (archive_read_open_filename(a1, argv[0],
1024*10)) {
warnx("%s", archive_error_string(a1));
filediff(tc, "archive open failed", NULL);
}
/* Open file 2 */
a2 = archive_read_new();
archive_read_support_format_ar(a2);
if (archive_read_open_filename(a2, argv[1],
1024*10)) {
warnx("%s", archive_error_string(a2));
filediff(tc, "archive open failed", NULL);
}
/* Main loop */
a1end = 0;
size1 = 0;
size2 = 0;
for (;;) {
/*
* Read header from each archive, compare length.
*/
r = archive_read_next_header(a1, &e1);
if (r == ARCHIVE_EOF)
a1end = 1;
if (r == ARCHIVE_WARN || r == ARCHIVE_RETRY ||
r == ARCHIVE_FATAL) {
warnx("%s", archive_error_string(a1));
filediff(tc, "archive data error", NULL);
}
r = archive_read_next_header(a2, &e2);
if (r == ARCHIVE_EOF) {
if (a1end > 0)
break;
else {
if (checklen)
filediff(tc, "length differ", NULL);
break;
}
}
if (r == ARCHIVE_WARN || r == ARCHIVE_RETRY ||
r == ARCHIVE_FATAL) {
warnx("%s", archive_error_string(a2));
filediff(tc, "archive data error", NULL);
}
if (a1end > 0) {
if (checklen)
filediff(tc, "length differ", NULL);
break;
}
/*
* Check member name if required.
*/
if (checkname) {
if (strcmp(archive_entry_pathname(e1),
archive_entry_pathname(e2)) != 0)
filediff(tc, "member name differ",
archive_entry_pathname(e1));
}
/*
* Compare time if required.
*/
if (checktime) {
if (archive_entry_mtime(e1) !=
archive_entry_mtime(e2))
filediff(tc, "member mtime differ",
archive_entry_pathname(e1));
}
/*
* Compare member size if required.
*/
if (checksize || checkcont) {
size1 = (size_t) archive_entry_size(e1);
size2 = (size_t) archive_entry_size(e2);
if (size1 != size2)
filediff(tc, "member size differ",
archive_entry_pathname(e1));
}
/*
* Compare member content if required.
*/
if (checkcont) {
if ((buf1 = malloc(size1)) == NULL)
filediff(tc, "not enough memory", NULL);
if ((buf2 = malloc(size2)) == NULL)
filediff(tc, "not enough memory", NULL);
if ((size_t) archive_read_data(a1, buf1, size1) !=
size1)
filediff(tc, "archive_read_data failed",
archive_entry_pathname(e1));
if ((size_t) archive_read_data(a2, buf2, size2) !=
size2)
filediff(tc, "archive_read_data failed",
archive_entry_pathname(e1));
if (memcmp(buf1, buf2, size1) != 0)
filediff(tc, "member content differ",
archive_entry_pathname(e1));
free(buf1);
free(buf2);
}
/* Proceed to next header. */
}
/* Passed! */
filesame(tc);
exit(EXIT_SUCCESS);
}
static void
filediff(const char *tc, const char *msg, const char *e)
{
if (e != NULL)
fprintf(stdout, "%s - archive diff not ok (%s (entry: %s))\n",
tc, msg, e);
else
fprintf(stdout, "%s - archive diff not ok (%s)\n", tc, msg);
incct(COUNTER);
exit(EXIT_SUCCESS);
}
static void
filesame(const char *tc)
{
fprintf(stdout, "%s - archive diff ok\n", tc);
incct(COUNTER);
incct(PASSED);
}
static void
incct(const char *pathname)
{
FILE *fp;
char buf[10];
if ((fp = fopen(pathname, "r")) != NULL) {
if (fgets(buf, 10, fp) != buf)
perror("fgets");
snprintf(buf, 10, "%d\n", atoi(buf) + 1);
fclose(fp);
}
if ((fp = fopen(pathname, "w")) != NULL) {
fputs(buf, fp);
fclose(fp);
}
}
static void
usage(void)
{
fprintf(stderr, "usage: ardiff archive1 archive2\n");
exit(EXIT_FAILURE);
}
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