source3/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 3 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, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21
  22 extern int torture_numops;
  23
  24 static TDB_CONTEXT *tdb;
  25
  26 #define NAME_LENGTH 20
  27
  28 static unsigned total, collisions, failures;
  29
  30 static bool test_one(struct cli_state *cli, const char *name)
  31 {
  32         uint16_t fnum;
  33         fstring shortname;
  34         fstring name2;
  35         NTSTATUS status;
  36         TDB_DATA data;
  37
  38         total++;
  39
  40         if (!NT_STATUS_IS_OK(cli_open(cli, name, O_RDWR|O_CREAT|O_EXCL, DENY_NONE, &fnum))) {
  41                 printf("open of %s failed (%s)\n", name, cli_errstr(cli));
  42                 return False;
  43         }
  44
  45         if (!NT_STATUS_IS_OK(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 (!NT_STATUS_IS_OK(cli_unlink(cli, name2, aSYSTEM | aHIDDEN))) {
  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         if (!NT_STATUS_IS_OK(cli_open(cli, name2, O_RDWR|O_CREAT|O_EXCL, DENY_NONE, &fnum))) {
  66                 printf("open2 of %s failed (%s)\n", name2, cli_errstr(cli));
  67                 return False;
  68         }
  69         if (!NT_STATUS_IS_OK(cli_close(cli, fnum))) {
  70                 printf("close of %s failed (%s)\n", name, cli_errstr(cli));
  71                 return False;
  72         }
  73
  74         /* and unlink by long name */
  75         if (!NT_STATUS_IS_OK(cli_unlink(cli, name, aSYSTEM | aHIDDEN))) {
  76                 printf("unlink2 of %s  (%s) failed (%s)\n",
  77                        name, name2, cli_errstr(cli));
  78                 failures++;
  79                 cli_unlink(cli, name2, aSYSTEM | aHIDDEN);
  80                 return True;
  81         }
  82
  83         /* see if the short name is already in the tdb */
  84         data = tdb_fetch_bystring(tdb, shortname);
  85         if (data.dptr) {
  86                 /* maybe its a duplicate long name? */
  87                 if (!strequal(name, (const char *)data.dptr)) {
  88                         /* we have a collision */
  89                         collisions++;
  90                         printf("Collision between %s and %s   ->  %s "
  91                                 " (coll/tot: %u/%u)\n",
  92                                 name, data.dptr, shortname, collisions, total);
  93                 }
  94                 free(data.dptr);
  95         } else {
  96                 TDB_DATA namedata;
  97                 /* store it for later */
  98                 namedata.dptr = CONST_DISCARD(uint8 *, name);
  99                 namedata.dsize = strlen(name)+1;
 100                 tdb_store_bystring(tdb, shortname, namedata, TDB_REPLACE);
 101         }
 102
 103         return True;
 104 }
 105
 106
 107 static void gen_name(char *name)
 108 {
 109         const char *chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz._-$~... ";
 110         unsigned max_idx = strlen(chars);
 111         unsigned len;
 112         int i;
 113         char *p;
 114
 115         fstrcpy(name, "\\mangle_test\\");
 116         p = name + strlen(name);
 117
 118         len = 1 + random() % NAME_LENGTH;
 119
 120         for (i=0;i<len;i++) {
 121                 p[i] = chars[random() % max_idx];
 122         }
 123
 124         p[i] = 0;
 125
 126         if (strcmp(p, ".") == 0 || strcmp(p, "..") == 0) {
 127                 p[0] = '_';
 128         }
 129
 130         /* have a high probability of a common lead char */
 131         if (random() % 2 == 0) {
 132                 p[0] = 'A';
 133         }
 134
 135         /* and a medium probability of a common lead string */
 136         if (random() % 10 == 0) {
 137                 if (strlen(p) <= 5) {
 138                         fstrcpy(p, "ABCDE");
 139                 } else {
 140                         /* try not to kill off the null termination */
 141                         memcpy(p, "ABCDE", 5);
 142                 }
 143         }
 144
 145         /* and a high probability of a good extension length */
 146         if (random() % 2 == 0) {
 147                 char *s = strrchr(p, '.');
 148                 if (s) {
 149                         s[4] = 0;
 150                 }
 151         }
 152
 153         /* ..... and a 100% proability of a file not ending in "." */
 154         if (p[strlen(p)-1] == '.')
 155                 p[strlen(p)-1] = '_';
 156 }
 157
 158
 159 bool torture_mangle(int dummy)
 160 {
 161         static struct cli_state *cli;
 162         int i;
 163         bool ret = True;
 164
 165         printf("starting mangle test\n");
 166
 167         if (!torture_open_connection(&cli, 0)) {
 168                 return False;
 169         }
 170
 171         /* we will use an internal tdb to store the names we have used */
 172         tdb = tdb_open(NULL, 100000, TDB_INTERNAL, 0, 0);
 173         if (!tdb) {
 174                 printf("ERROR: Failed to open tdb\n");
 175                 return False;
 176         }
 177
 178         cli_unlink(cli, "\\mangle_test\\*", aSYSTEM | aHIDDEN);
 179         cli_rmdir(cli, "\\mangle_test");
 180
 181         if (!NT_STATUS_IS_OK(cli_mkdir(cli, "\\mangle_test"))) {
 182                 printf("ERROR: Failed to make directory\n");
 183                 return False;
 184         }
 185
 186         for (i=0;i<torture_numops;i++) {
 187                 fstring name;
 188                 ZERO_STRUCT(name);
 189
 190                 gen_name(name);
 191
 192                 if (!test_one(cli, name)) {
 193                         ret = False;
 194                         break;
 195                 }
 196                 if (total && total % 100 == 0) {
 197                         printf("collisions %u/%u  - %.2f%%   (%u failures)\r",
 198                                collisions, total, (100.0*collisions) / total, failures);
 199                 }
 200         }
 201
 202         cli_unlink(cli, "\\mangle_test\\*", aSYSTEM | aHIDDEN);
 203         if (!NT_STATUS_IS_OK(cli_rmdir(cli, "\\mangle_test"))) {
 204                 printf("ERROR: Failed to remove directory\n");
 205                 return False;
 206         }
 207
 208         printf("\nTotal collisions %u/%u  - %.2f%%   (%u failures)\n",
 209                collisions, total, (100.0*collisions) / total, failures);
 210
 211         torture_close_connection(cli);
 212
 213         printf("mangle test finished\n");
 214         return (ret && (failures == 0));
 215 }