source4/torture/basic/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 "system/dir.h"
  23 #include "../tdb/include/tdb.h"
  24 #include "../lib/util/util_tdb.h"
  25 #include "libcli/libcli.h"
  26 #include "torture/util.h"
  27
  28 static TDB_CONTEXT *tdb;
  29
  30 #define NAME_LENGTH 20
  31
  32 static uint_t total, collisions, failures;
  33
  34 static bool test_one(struct torture_context *tctx ,struct smbcli_state *cli,
  35                      const char *name)
  36 {
  37         int fnum;
  38         const char *shortname;
  39         const char *name2;
  40         NTSTATUS status;
  41         TDB_DATA data;
  42
  43         total++;
  44
  45         fnum = smbcli_open(cli->tree, name, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
  46         if (fnum == -1) {
  47                 printf("open of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
  48                 return false;
  49         }
  50
  51         if (NT_STATUS_IS_ERR(smbcli_close(cli->tree, fnum))) {
  52                 printf("close of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
  53                 return false;
  54         }
  55
  56         /* get the short name */
  57         status = smbcli_qpathinfo_alt_name(cli->tree, name, &shortname);
  58         if (!NT_STATUS_IS_OK(status)) {
  59                 printf("query altname of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
  60                 return false;
  61         }
  62
  63         name2 = talloc_asprintf(tctx, "\\mangle_test\\%s", shortname);
  64         if (NT_STATUS_IS_ERR(smbcli_unlink(cli->tree, name2))) {
  65                 printf("unlink of %s  (%s) failed (%s)\n",
  66                        name2, name, smbcli_errstr(cli->tree));
  67                 return false;
  68         }
  69
  70         /* recreate by short name */
  71         fnum = smbcli_open(cli->tree, name2, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
  72         if (fnum == -1) {
  73                 printf("open2 of %s failed (%s)\n", name2, smbcli_errstr(cli->tree));
  74                 return false;
  75         }
  76         if (NT_STATUS_IS_ERR(smbcli_close(cli->tree, fnum))) {
  77                 printf("close of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
  78                 return false;
  79         }
  80
  81         /* and unlink by long name */
  82         if (NT_STATUS_IS_ERR(smbcli_unlink(cli->tree, name))) {
  83                 printf("unlink2 of %s  (%s) failed (%s)\n",
  84                        name, name2, smbcli_errstr(cli->tree));
  85                 failures++;
  86                 smbcli_unlink(cli->tree, name2);
  87                 return true;
  88         }
  89
  90         /* see if the short name is already in the tdb */
  91         data = tdb_fetch_bystring(tdb, shortname);
  92         if (data.dptr) {
  93                 /* maybe its a duplicate long name? */
  94                 if (strcasecmp(name, (const char *)data.dptr) != 0) {
  95                         /* we have a collision */
  96                         collisions++;
  97                         printf("Collision between %s and %s   ->  %s "
  98                                 " (coll/tot: %u/%u)\n",
  99                                 name, data.dptr, shortname, collisions, total);
 100                 }
 101                 free(data.dptr);
 102         } else {
 103                 TDB_DATA namedata;
 104                 /* store it for later */
 105                 namedata.dptr = discard_const_p(uint8_t, name);
 106                 namedata.dsize = strlen(name)+1;
 107                 tdb_store_bystring(tdb, shortname, namedata, TDB_REPLACE);
 108         }
 109
 110         return true;
 111 }
 112
 113
 114 static char *gen_name(TALLOC_CTX *mem_ctx)
 115 {
 116         const char *chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz._-$~...";
 117         uint_t max_idx = strlen(chars);
 118         uint_t len;
 119         int i;
 120         char *p;
 121         char *name;
 122
 123         name = talloc_strdup(mem_ctx, "\\mangle_test\\");
 124
 125         len = 1 + random() % NAME_LENGTH;
 126
 127         name = talloc_realloc(mem_ctx, name, char, strlen(name) + len + 6);
 128         p = name + strlen(name);
 129
 130         for (i=0;i<len;i++) {
 131                 p[i] = chars[random() % max_idx];
 132         }
 133
 134         p[i] = 0;
 135
 136         if (ISDOT(p) || ISDOTDOT(p)) {
 137                 p[0] = '_';
 138         }
 139
 140         /* have a high probability of a common lead char */
 141         if (random() % 2 == 0) {
 142                 p[0] = 'A';
 143         }
 144
 145         /* and a medium probability of a common lead string */
 146         if ((len > 5) && (random() % 10 == 0)) {
 147                 strncpy(p, "ABCDE", 5);
 148         }
 149
 150         /* and a high probability of a good extension length */
 151         if (random() % 2 == 0) {
 152                 char *s = strrchr(p, '.');
 153                 if (s) {
 154                         s[4] = 0;
 155                 }
 156         }
 157
 158         return name;
 159 }
 160
 161
 162 bool torture_mangle(struct torture_context *torture,
 163                     struct smbcli_state *cli)
 164 {
 165         extern int torture_numops;
 166         int i;
 167
 168         /* we will use an internal tdb to store the names we have used */
 169         tdb = tdb_open(NULL, 100000, TDB_INTERNAL, 0, 0);
 170         if (!tdb) {
 171                 printf("ERROR: Failed to open tdb\n");
 172                 return false;
 173         }
 174
 175         if (!torture_setup_dir(cli, "\\mangle_test")) {
 176                 return false;
 177         }
 178
 179         for (i=0;i<torture_numops;i++) {
 180                 char *name;
 181
 182                 name = gen_name(torture);
 183
 184                 if (!test_one(torture, cli, name)) {
 185                         break;
 186                 }
 187                 if (total && total % 100 == 0) {
 188                         if (torture_setting_bool(torture, "progress", true)) {
 189                                 printf("collisions %u/%u  - %.2f%%   (%u failures)\r",
 190                                        collisions, total, (100.0*collisions) / total, failures);
 191                         }
 192                 }
 193         }
 194
 195         smbcli_unlink(cli->tree, "\\mangle_test\\*");
 196         if (NT_STATUS_IS_ERR(smbcli_rmdir(cli->tree, "\\mangle_test"))) {
 197                 printf("ERROR: Failed to remove directory\n");
 198                 return false;
 199         }
 200
 201         printf("\nTotal collisions %u/%u  - %.2f%%   (%u failures)\n",
 202                collisions, total, (100.0*collisions) / total, failures);
 203
 204         return (failures == 0);
 205 }