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 extern int torture_numops;
  24
  25 static TDB_CONTEXT *tdb;
  26
  27 #define NAME_LENGTH 20
  28
  29 static unsigned total, collisions, failures;
  30
  31 static BOOL test_one(struct cli_state *cli, const char *name)
  32 {
  33         int fnum;
  34         fstring shortname;
  35         fstring name2;
  36         NTSTATUS status;
  37         TDB_DATA data;
  38
  39         total++;
  40
  41         fnum = cli_open(cli, name, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
  42         if (fnum == -1) {
  43                 printf("open of %s failed (%s)\n", name, cli_errstr(cli));
  44                 return False;
  45         }
  46
  47         if (!cli_close(cli, fnum)) {
  48                 printf("close of %s failed (%s)\n", name, cli_errstr(cli));
  49                 return False;
  50         }
  51
  52         /* get the short name */
  53         status = cli_qpathinfo_alt_name(cli, name, shortname);
  54         if (!NT_STATUS_IS_OK(status)) {
  55                 printf("query altname of %s failed (%s)\n", name, cli_errstr(cli));
  56                 return False;
  57         }
  58
  59         fstr_sprintf(name2, "\\mangle_test\\%s", shortname);
  60         if (!cli_unlink(cli, name2)) {
  61                 printf("unlink of %s  (%s) failed (%s)\n",
  62                        name2, name, cli_errstr(cli));
  63                 return False;
  64         }
  65
  66         /* recreate by short name */
  67         fnum = cli_open(cli, name2, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
  68         if (fnum == -1) {
  69                 printf("open2 of %s failed (%s)\n", name2, cli_errstr(cli));
  70                 return False;
  71         }
  72         if (!cli_close(cli, fnum)) {
  73                 printf("close of %s failed (%s)\n", name, cli_errstr(cli));
  74                 return False;
  75         }
  76
  77         /* and unlink by long name */
  78         if (!cli_unlink(cli, name)) {
  79                 printf("unlink2 of %s  (%s) failed (%s)\n",
  80                        name, name2, cli_errstr(cli));
  81                 failures++;
  82                 cli_unlink(cli, name2);
  83                 return True;
  84         }
  85
  86         /* see if the short name is already in the tdb */
  87         data = tdb_fetch_bystring(tdb, shortname);
  88         if (data.dptr) {
  89                 /* maybe its a duplicate long name? */
  90                 if (!strequal(name, data.dptr)) {
  91                         /* we have a collision */
  92                         collisions++;
  93                         printf("Collision between %s and %s   ->  %s "
  94                                 " (coll/tot: %u/%u)\n",
  95                                 name, data.dptr, shortname, collisions, total);
  96                 }
  97                 free(data.dptr);
  98         } else {
  99                 TDB_DATA namedata;
 100                 /* store it for later */
 101                 namedata.dptr = CONST_DISCARD(char *, name);
 102                 namedata.dsize = strlen(name)+1;
 103                 tdb_store_bystring(tdb, shortname, namedata, TDB_REPLACE);
 104         }
 105
 106         return True;
 107 }
 108
 109
 110 static void gen_name(char *name)
 111 {
 112         const char *chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz._-$~... ";
 113         unsigned max_idx = strlen(chars);
 114         unsigned len;
 115         int i;
 116         char *p;
 117
 118         fstrcpy(name, "\\mangle_test\\");
 119         p = name + strlen(name);
 120
 121         len = 1 + random() % NAME_LENGTH;
 122
 123         for (i=0;i<len;i++) {
 124                 p[i] = chars[random() % max_idx];
 125         }
 126
 127         p[i] = 0;
 128
 129         if (strcmp(p, ".") == 0 || strcmp(p, "..") == 0) {
 130                 p[0] = '_';
 131         }
 132
 133         /* have a high probability of a common lead char */
 134         if (random() % 2 == 0) {
 135                 p[0] = 'A';
 136         }
 137
 138         /* and a medium probability of a common lead string */
 139         if (random() % 10 == 0) {
 140                 if (strlen(p) <= 5) {
 141                         fstrcpy(p, "ABCDE");
 142                 } else {
 143                         /* try not to kill off the null termination */
 144                         memcpy(p, "ABCDE", 5);
 145                 }
 146         }
 147
 148         /* and a high probability of a good extension length */
 149         if (random() % 2 == 0) {
 150                 char *s = strrchr(p, '.');
 151                 if (s) {
 152                         s[4] = 0;
 153                 }
 154         }
 155
 156         /* ..... and a 100% proability of a file not ending in "." */
 157         if (p[strlen(p)-1] == '.')
 158                 p[strlen(p)-1] = '_';
 159 }
 160
 161
 162 BOOL torture_mangle(int dummy)
 163 {
 164         static struct cli_state *cli;
 165         int i;
 166         BOOL ret = True;
 167
 168         printf("starting mangle test\n");
 169
 170         if (!torture_open_connection(&cli, 0)) {
 171                 return False;
 172         }
 173
 174         /* we will use an internal tdb to store the names we have used */
 175         tdb = tdb_open(NULL, 100000, TDB_INTERNAL, 0, 0);
 176         if (!tdb) {
 177                 printf("ERROR: Failed to open tdb\n");
 178                 return False;
 179         }
 180
 181         cli_unlink(cli, "\\mangle_test\\*");
 182         cli_rmdir(cli, "\\mangle_test");
 183
 184         if (!cli_mkdir(cli, "\\mangle_test")) {
 185                 printf("ERROR: Failed to make directory\n");
 186                 return False;
 187         }
 188
 189         for (i=0;i<torture_numops;i++) {
 190                 fstring name;
 191                 ZERO_STRUCT(name);
 192
 193                 gen_name(name);
 194
 195                 if (!test_one(cli, name)) {
 196                         ret = False;
 197                         break;
 198                 }
 199                 if (total && total % 100 == 0) {
 200                         printf("collisions %u/%u  - %.2f%%   (%u failures)\r",
 201                                collisions, total, (100.0*collisions) / total, failures);
 202                 }
 203         }
 204
 205         cli_unlink(cli, "\\mangle_test\\*");
 206         if (!cli_rmdir(cli, "\\mangle_test")) {
 207                 printf("ERROR: Failed to remove directory\n");
 208                 return False;
 209         }
 210
 211         printf("\nTotal collisions %u/%u  - %.2f%%   (%u failures)\n",
 212                collisions, total, (100.0*collisions) / total, failures);
 213
 214         torture_close_connection(cli);
 215
 216         printf("mangle test finished\n");
 217         return (ret && (failures == 0));
 218 }