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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"
#include "system/filesys.h"
#include "system/dir.h"
#include <tdb.h>
#include "../lib/util/util_tdb.h"
#include "libcli/libcli.h"
#include "torture/util.h"
static TDB_CONTEXT *tdb;
#define NAME_LENGTH 20
static unsigned int total, collisions, failures;
static bool test_one(struct torture_context *tctx ,struct smbcli_state *cli,
const char *name)
{
int fnum;
const char *shortname;
const char *name2;
NTSTATUS status;
TDB_DATA data;
total++;
fnum = smbcli_open(cli->tree, name, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
if (fnum == -1) {
printf("open of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
return false;
}
if (NT_STATUS_IS_ERR(smbcli_close(cli->tree, fnum))) {
printf("close of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
return false;
}
/* get the short name */
status = smbcli_qpathinfo_alt_name(cli->tree, name, &shortname);
if (!NT_STATUS_IS_OK(status)) {
printf("query altname of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
return false;
}
name2 = talloc_asprintf(tctx, "\\mangle_test\\%s", shortname);
if (NT_STATUS_IS_ERR(smbcli_unlink(cli->tree, name2))) {
printf("unlink of %s (%s) failed (%s)\n",
name2, name, smbcli_errstr(cli->tree));
return false;
}
/* recreate by short name */
fnum = smbcli_open(cli->tree, name2, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
if (fnum == -1) {
printf("open2 of %s failed (%s)\n", name2, smbcli_errstr(cli->tree));
return false;
}
if (NT_STATUS_IS_ERR(smbcli_close(cli->tree, fnum))) {
printf("close of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
return false;
}
/* and unlink by long name */
if (NT_STATUS_IS_ERR(smbcli_unlink(cli->tree, name))) {
printf("unlink2 of %s (%s) failed (%s)\n",
name, name2, smbcli_errstr(cli->tree));
failures++;
smbcli_unlink(cli->tree, 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 (strcasecmp(name, (const char *)data.dptr) != 0) {
/* 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 = discard_const_p(uint8_t, name);
namedata.dsize = strlen(name)+1;
tdb_store_bystring(tdb, shortname, namedata, TDB_REPLACE);
}
return true;
}
static char *gen_name(TALLOC_CTX *mem_ctx)
{
const char *chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz._-$~...";
unsigned int max_idx = strlen(chars);
unsigned int len;
int i;
char *p;
char *name;
name = talloc_strdup(mem_ctx, "\\mangle_test\\");
len = 1 + random() % NAME_LENGTH;
name = talloc_realloc(mem_ctx, name, char, strlen(name) + len + 6);
p = name + strlen(name);
for (i=0;i<len;i++) {
p[i] = chars[random() % max_idx];
}
p[i] = 0;
if (ISDOT(p) || ISDOTDOT(p)) {
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 ((len > 5) && (random() % 10 == 0)) {
strncpy(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;
}
}
return name;
}
bool torture_mangle(struct torture_context *torture,
struct smbcli_state *cli)
{
extern int torture_numops;
int i;
/* 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;
}
if (!torture_setup_dir(cli, "\\mangle_test")) {
return false;
}
for (i=0;i<torture_numops;i++) {
char *name;
name = gen_name(torture);
if (!test_one(torture, cli, name)) {
break;
}
if (total && total % 100 == 0) {
if (torture_setting_bool(torture, "progress", true)) {
printf("collisions %u/%u - %.2f%% (%u failures)\r",
collisions, total, (100.0*collisions) / total, failures);
}
}
}
smbcli_unlink(cli->tree, "\\mangle_test\\*");
if (NT_STATUS_IS_ERR(smbcli_rmdir(cli->tree, "\\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);
return (failures == 0);
}
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