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.h>
  24 #include "../lib/util/util_tdb.h"
  25 #include "libcli/libcli.h"
  26 #include "torture/util.h"
  27 #include "torture/basic/proto.h"
  28
  29 static TDB_CONTEXT *tdb;
  30
  31 #define NAME_LENGTH 20
  32
  33 static unsigned int total, collisions, failures;
  34
  35 static bool test_one(struct torture_context *tctx ,struct smbcli_state *cli,
  36                      const char *name)
  37 {
  38         int fnum;
  39         const char *shortname;
  40         const char *name2;
  41         NTSTATUS status;
  42         TDB_DATA data;
  43
  44         total++;
  45
  46         fnum = smbcli_open(cli->tree, name, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
  47         if (fnum == -1) {
  48                 printf("open of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
  49                 return false;
  50         }
  51
  52         if (NT_STATUS_IS_ERR(smbcli_close(cli->tree, fnum))) {
  53                 printf("close of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
  54                 return false;
  55         }
  56
  57         /* get the short name */
  58         status = smbcli_qpathinfo_alt_name(cli->tree, name, &shortname);
  59         if (!NT_STATUS_IS_OK(status)) {
  60                 printf("query altname of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
  61                 return false;
  62         }
  63
  64         name2 = talloc_asprintf(tctx, "\\mangle_test\\%s", shortname);
  65         if (NT_STATUS_IS_ERR(smbcli_unlink(cli->tree, name2))) {
  66                 printf("unlink of %s  (%s) failed (%s)\n",
  67                        name2, name, smbcli_errstr(cli->tree));
  68                 return false;
  69         }
  70
  71         /* recreate by short name */
  72         fnum = smbcli_open(cli->tree, name2, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
  73         if (fnum == -1) {
  74                 printf("open2 of %s failed (%s)\n", name2, smbcli_errstr(cli->tree));
  75                 return false;
  76         }
  77         if (NT_STATUS_IS_ERR(smbcli_close(cli->tree, fnum))) {
  78                 printf("close of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
  79                 return false;
  80         }
  81
  82         /* and unlink by long name */
  83         if (NT_STATUS_IS_ERR(smbcli_unlink(cli->tree, name))) {
  84                 printf("unlink2 of %s  (%s) failed (%s)\n",
  85                        name, name2, smbcli_errstr(cli->tree));
  86                 failures++;
  87                 smbcli_unlink(cli->tree, name2);
  88                 return true;
  89         }
  90
  91         /* see if the short name is already in the tdb */
  92         data = tdb_fetch_bystring(tdb, shortname);
  93         if (data.dptr) {
  94                 /* maybe its a duplicate long name? */
  95                 if (strcasecmp(name, (const char *)data.dptr) != 0) {
  96                         /* we have a collision */
  97                         collisions++;
  98                         printf("Collision between %s and %s   ->  %s "
  99                                 " (coll/tot: %u/%u)\n",
 100                                 name, data.dptr, shortname, collisions, total);
 101                 }
 102                 free(data.dptr);
 103         } else {
 104                 TDB_DATA namedata;
 105                 /* store it for later */
 106                 namedata.dptr = discard_const_p(uint8_t, name);
 107                 namedata.dsize = strlen(name)+1;
 108                 tdb_store_bystring(tdb, shortname, namedata, TDB_REPLACE);
 109         }
 110
 111         return true;
 112 }
 113
 114
 115 static char *gen_name(TALLOC_CTX *mem_ctx)
 116 {
 117         const char *chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz._-$~...";
 118         unsigned int max_idx = strlen(chars);
 119         unsigned int len;
 120         int i;
 121         char *p;
 122         char *name;
 123
 124         name = talloc_strdup(mem_ctx, "\\mangle_test\\");
 125
 126         len = 1 + random() % NAME_LENGTH;
 127
 128         name = talloc_realloc(mem_ctx, name, char, strlen(name) + len + 6);
 129         p = name + strlen(name);
 130
 131         for (i=0;i<len;i++) {
 132                 p[i] = chars[random() % max_idx];
 133         }
 134
 135         p[i] = 0;
 136
 137         if (ISDOT(p) || ISDOTDOT(p)) {
 138                 p[0] = '_';
 139         }
 140
 141         /* have a high probability of a common lead char */
 142         if (random() % 2 == 0) {
 143                 p[0] = 'A';
 144         }
 145
 146         /* and a medium probability of a common lead string */
 147         if ((len > 5) && (random() % 10 == 0)) {
 148                 strncpy(p, "ABCDE", 5);
 149         }
 150
 151         /* and a high probability of a good extension length */
 152         if (random() % 2 == 0) {
 153                 char *s = strrchr(p, '.');
 154                 if (s) {
 155                         s[4] = 0;
 156                 }
 157         }
 158
 159         return name;
 160 }
 161
 162
 163 bool torture_mangle(struct torture_context *torture,
 164                     struct smbcli_state *cli)
 165 {
 166         extern int torture_numops;
 167         int i;
 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         if (!torture_setup_dir(cli, "\\mangle_test")) {
 177                 return false;
 178         }
 179
 180         for (i=0;i<torture_numops;i++) {
 181                 char *name;
 182
 183                 name = gen_name(torture);
 184
 185                 if (!test_one(torture, cli, name)) {
 186                         break;
 187                 }
 188                 if (total && total % 100 == 0) {
 189                         if (torture_setting_bool(torture, "progress", true)) {
 190                                 printf("collisions %u/%u  - %.2f%%   (%u failures)\r",
 191                                        collisions, total, (100.0*collisions) / total, failures);
 192                         }
 193                 }
 194         }
 195
 196         smbcli_unlink(cli->tree, "\\mangle_test\\*");
 197         if (NT_STATUS_IS_ERR(smbcli_rmdir(cli->tree, "\\mangle_test"))) {
 198                 printf("ERROR: Failed to remove directory\n");
 199                 return false;
 200         }
 201
 202         printf("\nTotal collisions %u/%u  - %.2f%%   (%u failures)\n",
 203                collisions, total, (100.0*collisions) / total, failures);
 204
 205         return (failures == 0);
 206 }