source/torture/mangle_test.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB torture tester - mangling test
   4    Copyright (C) Andrew Tridgell 2002
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "includes.h"
  22
  23 static TDB_CONTEXT *tdb;
  24
  25 #define NAME_LENGTH 20
  26
  27 static unsigned total, collisions, failures;
  28
  29 static BOOL test_one(struct cli_state *cli, const char *name)
  30 {
  31         int fnum;
  32         fstring shortname;
  33         fstring name2;
  34         NTSTATUS status;
  35         TDB_DATA data;
  36
  37         total++;
  38
  39         fnum = cli_open(cli, name, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
  40         if (fnum == -1) {
  41                 printf("open of %s failed (%s)\n", name, cli_errstr(cli));
  42                 return False;
  43         }
  44
  45         if (!cli_close(cli, fnum)) {
  46                 printf("close of %s failed (%s)\n", name, cli_errstr(cli));
  47                 return False;
  48         }
  49
  50         /* get the short name */
  51         status = cli_qpathinfo_alt_name(cli, name, shortname);
  52         if (!NT_STATUS_IS_OK(status)) {
  53                 printf("query altname of %s failed (%s)\n", name, cli_errstr(cli));
  54                 return False;
  55         }
  56
  57         fstr_sprintf(name2, "\\mangle_test\\%s", shortname);
  58         if (!cli_unlink(cli, name2)) {
  59                 printf("unlink of %s  (%s) failed (%s)\n",
  60                        name2, name, cli_errstr(cli));
  61                 return False;
  62         }
  63
  64         /* recreate by short name */
  65         fnum = cli_open(cli, name2, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
  66         if (fnum == -1) {
  67                 printf("open2 of %s failed (%s)\n", name2, cli_errstr(cli));
  68                 return False;
  69         }
  70         if (!cli_close(cli, fnum)) {
  71                 printf("close of %s failed (%s)\n", name, cli_errstr(cli));
  72                 return False;
  73         }
  74
  75         /* and unlink by long name */
  76         if (!cli_unlink(cli, name)) {
  77                 printf("unlink2 of %s  (%s) failed (%s)\n",
  78                        name, name2, cli_errstr(cli));
  79                 failures++;
  80                 cli_unlink(cli, name2);
  81                 return True;
  82         }
  83
  84         /* see if the short name is already in the tdb */
  85         data = tdb_fetch_bystring(tdb, shortname);
  86         if (data.dptr) {
  87                 /* maybe its a duplicate long name? */
  88                 if (!strequal(name, data.dptr)) {
  89                         /* we have a collision */
  90                         collisions++;
  91                         printf("Collision between %s and %s   ->  %s "
  92                                 " (coll/tot: %u/%u)\n",
  93                                 name, data.dptr, shortname, collisions, total);
  94                 }
  95                 free(data.dptr);
  96         } else {
  97                 TDB_DATA namedata;
  98                 /* store it for later */
  99                 namedata.dptr = name;
 100                 namedata.dsize = strlen(name)+1;
 101                 tdb_store_bystring(tdb, shortname, namedata, TDB_REPLACE);
 102         }
 103
 104         return True;
 105 }
 106
 107
 108 static void gen_name(char *name)
 109 {
 110         const char *chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz._-$~... ";
 111         unsigned max_idx = strlen(chars);
 112         unsigned len;
 113         int i;
 114         char *p;
 115
 116         fstrcpy(name, "\\mangle_test\\");
 117         p = name + strlen(name);
 118
 119         len = 1 + random() % NAME_LENGTH;
 120
 121         for (i=0;i<len;i++) {
 122                 p[i] = chars[random() % max_idx];
 123         }
 124
 125         p[i] = 0;
 126
 127         if (strcmp(p, ".") == 0 || strcmp(p, "..") == 0) {
 128                 p[0] = '_';
 129         }
 130
 131         /* have a high probability of a common lead char */
 132         if (random() % 2 == 0) {
 133                 p[0] = 'A';
 134         }
 135
 136         /* and a medium probability of a common lead string */
 137         if (random() % 10 == 0) {
 138                 if (strlen(p) <= 5) {
 139                         fstrcpy(p, "ABCDE");
 140                 } else {
 141                         /* try not to kill off the null termination */
 142                         memcpy(p, "ABCDE", 5);
 143                 }
 144         }
 145
 146         /* and a high probability of a good extension length */
 147         if (random() % 2 == 0) {
 148                 char *s = strrchr(p, '.');
 149                 if (s) {
 150                         s[4] = 0;
 151                 }
 152         }
 153 }
 154
 155
 156 BOOL torture_mangle(int dummy)
 157 {
 158         extern int torture_numops;
 159         static struct cli_state *cli;
 160         int i;
 161         BOOL ret = True;
 162
 163         printf("starting mangle test\n");
 164
 165         if (!torture_open_connection(&cli)) {
 166                 return False;
 167         }
 168
 169         /* we will use an internal tdb to store the names we have used */
 170         tdb = tdb_open(NULL, 100000, TDB_INTERNAL, 0, 0);
 171         if (!tdb) {
 172                 printf("ERROR: Failed to open tdb\n");
 173                 return False;
 174         }
 175
 176         cli_unlink(cli, "\\mangle_test\\*");
 177         cli_rmdir(cli, "\\mangle_test");
 178
 179         if (!cli_mkdir(cli, "\\mangle_test")) {
 180                 printf("ERROR: Failed to make directory\n");
 181                 return False;
 182         }
 183
 184         for (i=0;i<torture_numops;i++) {
 185                 fstring name;
 186                 ZERO_STRUCT(name);
 187
 188                 gen_name(name);
 189
 190                 if (!test_one(cli, name)) {
 191                         ret = False;
 192                         break;
 193                 }
 194                 if (total && total % 100 == 0) {
 195                         printf("collisions %u/%u  - %.2f%%   (%u failures)\r",
 196                                collisions, total, (100.0*collisions) / total, failures);
 197                 }
 198         }
 199
 200         cli_unlink(cli, "\\mangle_test\\*");
 201         if (!cli_rmdir(cli, "\\mangle_test")) {
 202                 printf("ERROR: Failed to remove directory\n");
 203                 return False;
 204         }
 205
 206         printf("\nTotal collisions %u/%u  - %.2f%%   (%u failures)\n",
 207                collisions, total, (100.0*collisions) / total, failures);
 208
 209         torture_close_connection(cli);
 210
 211         printf("mangle test finished\n");
 212         return (ret && (failures == 0));
 213 }