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 #include "system/filesys.h"
  22 #include "torture/proto.h"
  23 #include "libsmb/libsmb.h"
  24 #include "libsmb/clirap.h"
  25 #include "util_tdb.h"
  26 #include "lib/util/string_wrappers.h"
  27
  28 extern int torture_numops;
  29
  30 static TDB_CONTEXT *tdb;
  31
  32 #define NAME_LENGTH 20
  33
  34 static unsigned total, collisions, failures;
  35
  36 static bool test_one(struct cli_state *cli, const char *name)
  37 {
  38         uint16_t fnum;
  39         fstring shortname;
  40         fstring name2;
  41         NTSTATUS status;
  42         TDB_DATA data;
  43
  44         total++;
  45
  46         status = cli_openx(cli, name, O_RDWR|O_CREAT|O_EXCL, DENY_NONE, &fnum);
  47         if (!NT_STATUS_IS_OK(status)) {
  48                 printf("open of %s failed (%s)\n", name, nt_errstr(status));
  49                 return False;
  50         }
  51
  52         status = cli_close(cli, fnum);
  53         if (!NT_STATUS_IS_OK(status)) {
  54                 printf("close of %s failed (%s)\n", name, nt_errstr(status));
  55                 return False;
  56         }
  57
  58         /* get the short name */
  59         status = cli_qpathinfo_alt_name(cli, name, shortname);
  60         if (!NT_STATUS_IS_OK(status)) {
  61                 printf("query altname of %s failed (%s)\n", name, nt_errstr(status));
  62                 return False;
  63         }
  64
  65         fstr_sprintf(name2, "\\mangle_test\\%s", shortname);
  66         status = cli_unlink(cli, name2, FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_HIDDEN);
  67         if (!NT_STATUS_IS_OK(status)) {
  68                 printf("unlink of %s  (%s) failed (%s)\n",
  69                        name2, name, nt_errstr(status));
  70                 return False;
  71         }
  72
  73         /* recreate by short name */
  74         status = cli_openx(cli, name2, O_RDWR|O_CREAT|O_EXCL, DENY_NONE, &fnum);
  75         if (!NT_STATUS_IS_OK(status)) {
  76                 printf("open2 of %s failed (%s)\n", name2, nt_errstr(status));
  77                 return False;
  78         }
  79
  80         status = cli_close(cli, fnum);
  81         if (!NT_STATUS_IS_OK(status)) {
  82                 printf("close of %s failed (%s)\n", name, nt_errstr(status));
  83                 return False;
  84         }
  85
  86         /* and unlink by long name */
  87         status = cli_unlink(cli, name, FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_HIDDEN);
  88         if (!NT_STATUS_IS_OK(status)) {
  89                 printf("unlink2 of %s  (%s) failed (%s)\n",
  90                        name, name2, nt_errstr(status));
  91                 failures++;
  92                 cli_unlink(cli, name2, FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_HIDDEN);
  93                 return True;
  94         }
  95
  96         /* see if the short name is already in the tdb */
  97         data = tdb_fetch_bystring(tdb, shortname);
  98         if (data.dptr) {
  99                 /* maybe its a duplicate long name? */
 100                 if (!strequal(name, (const char *)data.dptr)) {
 101                         /* we have a collision */
 102                         collisions++;
 103                         printf("Collision between %s and %s   ->  %s "
 104                                 " (coll/tot: %u/%u)\n",
 105                                 name, data.dptr, shortname, collisions, total);
 106                 }
 107                 free(data.dptr);
 108         } else {
 109                 TDB_DATA namedata;
 110                 /* store it for later */
 111                 namedata.dptr = discard_const_p(uint8_t, name);
 112                 namedata.dsize = strlen(name)+1;
 113                 tdb_store_bystring(tdb, shortname, namedata, TDB_REPLACE);
 114         }
 115
 116         return True;
 117 }
 118
 119
 120 static void gen_name(char *name)
 121 {
 122         const char *chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz._-$~... ";
 123         unsigned max_idx = strlen(chars);
 124         unsigned len;
 125         int i;
 126         char *p;
 127
 128         fstrcpy(name, "\\mangle_test\\");
 129         p = name + strlen(name);
 130
 131         len = 1 + random() % NAME_LENGTH;
 132
 133         for (i=0;i<len;i++) {
 134                 p[i] = chars[random() % max_idx];
 135         }
 136
 137         p[i] = 0;
 138
 139         if (strcmp(p, ".") == 0 || strcmp(p, "..") == 0) {
 140                 p[0] = '_';
 141         }
 142
 143         /* have a high probability of a common lead char */
 144         if (random() % 2 == 0) {
 145                 p[0] = 'A';
 146         }
 147
 148         /* and a medium probability of a common lead string */
 149         if (random() % 10 == 0) {
 150                 if (strlen(p) <= 5) {
 151                         fstrcpy(p, "ABCDE");
 152                 } else {
 153                         /* try not to kill off the null termination */
 154                         memcpy(p, "ABCDE", 5);
 155                 }
 156         }
 157
 158         /* and a high probability of a good extension length */
 159         if (random() % 2 == 0) {
 160                 char *s = strrchr(p, '.');
 161                 if (s) {
 162                         s[4] = 0;
 163                 }
 164         }
 165
 166         /* ..... and a 100% proability of a file not ending in "." */
 167         if (p[strlen(p)-1] == '.')
 168                 p[strlen(p)-1] = '_';
 169 }
 170
 171
 172 bool torture_mangle(int dummy)
 173 {
 174         static struct cli_state *cli;
 175         int i;
 176         bool ret = True;
 177
 178         printf("starting mangle test\n");
 179
 180         if (!torture_open_connection(&cli, 0)) {
 181                 return False;
 182         }
 183
 184         /* we will use an internal tdb to store the names we have used */
 185         tdb = tdb_open(NULL, 100000, TDB_INTERNAL, 0, 0);
 186         if (!tdb) {
 187                 printf("ERROR: Failed to open tdb\n");
 188                 return False;
 189         }
 190
 191         torture_deltree(cli, "\\mangle_test");
 192
 193         if (!NT_STATUS_IS_OK(cli_mkdir(cli, "\\mangle_test"))) {
 194                 printf("ERROR: Failed to make directory\n");
 195                 return False;
 196         }
 197
 198         for (i=0;i<torture_numops;i++) {
 199                 fstring name;
 200                 ZERO_STRUCT(name);
 201
 202                 gen_name(name);
 203
 204                 if (!test_one(cli, name)) {
 205                         ret = False;
 206                         break;
 207                 }
 208                 if (total && total % 100 == 0) {
 209                         printf("collisions %u/%u  - %.2f%%   (%u failures)\r",
 210                                collisions, total, (100.0*collisions) / total, failures);
 211                 }
 212         }
 213
 214         torture_deltree(cli, "\\mangle_test");
 215
 216         printf("\nTotal collisions %u/%u  - %.2f%%   (%u failures)\n",
 217                collisions, total, (100.0*collisions) / total, failures);
 218
 219         torture_close_connection(cli);
 220
 221         printf("mangle test finished\n");
 222         return (ret && (failures == 0));
 223 }