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/*
Unix SMB/CIFS implementation.
SMB torture tester - mangling test
Copyright (C) Andrew Tridgell 2002
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
extern int torture_numops;
static TDB_CONTEXT *tdb;
#define NAME_LENGTH 20
static unsigned total, collisions, failures;
static bool test_one(struct cli_state *cli, const char *name)
{
int fnum;
fstring shortname;
fstring name2;
NTSTATUS status;
TDB_DATA data;
total++;
fnum = cli_open(cli, name, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
if (fnum == -1) {
printf("open of %s failed (%s)\n", name, cli_errstr(cli));
return False;
}
if (!cli_close(cli, fnum)) {
printf("close of %s failed (%s)\n", name, cli_errstr(cli));
return False;
}
/* get the short name */
status = cli_qpathinfo_alt_name(cli, name, shortname);
if (!NT_STATUS_IS_OK(status)) {
printf("query altname of %s failed (%s)\n", name, cli_errstr(cli));
return False;
}
fstr_sprintf(name2, "\\mangle_test\\%s", shortname);
if (!cli_unlink(cli, name2)) {
printf("unlink of %s (%s) failed (%s)\n",
name2, name, cli_errstr(cli));
return False;
}
/* recreate by short name */
fnum = cli_open(cli, name2, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
if (fnum == -1) {
printf("open2 of %s failed (%s)\n", name2, cli_errstr(cli));
return False;
}
if (!cli_close(cli, fnum)) {
printf("close of %s failed (%s)\n", name, cli_errstr(cli));
return False;
}
/* and unlink by long name */
if (!cli_unlink(cli, name)) {
printf("unlink2 of %s (%s) failed (%s)\n",
name, name2, cli_errstr(cli));
failures++;
cli_unlink(cli, name2);
return True;
}
/* see if the short name is already in the tdb */
data = tdb_fetch_bystring(tdb, shortname);
if (data.dptr) {
/* maybe its a duplicate long name? */
if (!strequal(name, (const char *)data.dptr)) {
/* we have a collision */
collisions++;
printf("Collision between %s and %s -> %s "
" (coll/tot: %u/%u)\n",
name, data.dptr, shortname, collisions, total);
}
free(data.dptr);
} else {
TDB_DATA namedata;
/* store it for later */
namedata.dptr = CONST_DISCARD(uint8 *, name);
namedata.dsize = strlen(name)+1;
tdb_store_bystring(tdb, shortname, namedata, TDB_REPLACE);
}
return True;
}
static void gen_name(char *name)
{
const char *chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz._-$~... ";
unsigned max_idx = strlen(chars);
unsigned len;
int i;
char *p;
fstrcpy(name, "\\mangle_test\\");
p = name + strlen(name);
len = 1 + random() % NAME_LENGTH;
for (i=0;i<len;i++) {
p[i] = chars[random() % max_idx];
}
p[i] = 0;
if (strcmp(p, ".") == 0 || strcmp(p, "..") == 0) {
p[0] = '_';
}
/* have a high probability of a common lead char */
if (random() % 2 == 0) {
p[0] = 'A';
}
/* and a medium probability of a common lead string */
if (random() % 10 == 0) {
if (strlen(p) <= 5) {
fstrcpy(p, "ABCDE");
} else {
/* try not to kill off the null termination */
memcpy(p, "ABCDE", 5);
}
}
/* and a high probability of a good extension length */
if (random() % 2 == 0) {
char *s = strrchr(p, '.');
if (s) {
s[4] = 0;
}
}
/* ..... and a 100% proability of a file not ending in "." */
if (p[strlen(p)-1] == '.')
p[strlen(p)-1] = '_';
}
bool torture_mangle(int dummy)
{
static struct cli_state *cli;
int i;
bool ret = True;
printf("starting mangle test\n");
if (!torture_open_connection(&cli, 0)) {
return False;
}
/* we will use an internal tdb to store the names we have used */
tdb = tdb_open(NULL, 100000, TDB_INTERNAL, 0, 0);
if (!tdb) {
printf("ERROR: Failed to open tdb\n");
return False;
}
cli_unlink(cli, "\\mangle_test\\*");
cli_rmdir(cli, "\\mangle_test");
if (!NT_STATUS_IS_OK(cli_mkdir(cli, "\\mangle_test"))) {
printf("ERROR: Failed to make directory\n");
return False;
}
for (i=0;i<torture_numops;i++) {
fstring name;
ZERO_STRUCT(name);
gen_name(name);
if (!test_one(cli, name)) {
ret = False;
break;
}
if (total && total % 100 == 0) {
printf("collisions %u/%u - %.2f%% (%u failures)\r",
collisions, total, (100.0*collisions) / total, failures);
}
}
cli_unlink(cli, "\\mangle_test\\*");
if (!NT_STATUS_IS_OK(cli_rmdir(cli, "\\mangle_test"))) {
printf("ERROR: Failed to remove directory\n");
return False;
}
printf("\nTotal collisions %u/%u - %.2f%% (%u failures)\n",
collisions, total, (100.0*collisions) / total, failures);
torture_close_connection(cli);
printf("mangle test finished\n");
return (ret && (failures == 0));
}
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