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 #undef strcasecmp
  30
  31 static TDB_CONTEXT *tdb;
  32
  33 #define NAME_LENGTH 20
  34
  35 static unsigned int total, collisions, failures;
  36
  37 static bool test_one(struct torture_context *tctx ,struct smbcli_state *cli,
  38                      const char *name)
  39 {
  40         int fnum;
  41         const char *shortname;
  42         const char *name2;
  43         NTSTATUS status;
  44         TDB_DATA data;
  45
  46         total++;
  47
  48         fnum = smbcli_open(cli->tree, name, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
  49         if (fnum == -1) {
  50                 printf("open of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
  51                 return false;
  52         }
  53
  54         if (NT_STATUS_IS_ERR(smbcli_close(cli->tree, fnum))) {
  55                 printf("close of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
  56                 return false;
  57         }
  58
  59         /* get the short name */
  60         status = smbcli_qpathinfo_alt_name(cli->tree, name, &shortname);
  61         if (!NT_STATUS_IS_OK(status)) {
  62                 printf("query altname of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
  63                 return false;
  64         }
  65
  66         name2 = talloc_asprintf(tctx, "\\mangle_test\\%s", shortname);
  67         if (NT_STATUS_IS_ERR(smbcli_unlink(cli->tree, name2))) {
  68                 printf("unlink of %s  (%s) failed (%s)\n",
  69                        name2, name, smbcli_errstr(cli->tree));
  70                 return false;
  71         }
  72
  73         /* recreate by short name */
  74         fnum = smbcli_open(cli->tree, name2, O_RDWR|O_CREAT|O_EXCL, DENY_NONE);
  75         if (fnum == -1) {
  76                 printf("open2 of %s failed (%s)\n", name2, smbcli_errstr(cli->tree));
  77                 return false;
  78         }
  79         if (NT_STATUS_IS_ERR(smbcli_close(cli->tree, fnum))) {
  80                 printf("close of %s failed (%s)\n", name, smbcli_errstr(cli->tree));
  81                 return false;
  82         }
  83
  84         /* and unlink by long name */
  85         if (NT_STATUS_IS_ERR(smbcli_unlink(cli->tree, name))) {
  86                 printf("unlink2 of %s  (%s) failed (%s)\n",
  87                        name, name2, smbcli_errstr(cli->tree));
  88                 failures++;
  89                 smbcli_unlink(cli->tree, name2);
  90                 return true;
  91         }
  92
  93         /* see if the short name is already in the tdb */
  94         data = tdb_fetch_bystring(tdb, shortname);
  95         if (data.dptr) {
  96                 /* maybe its a duplicate long name? */
  97                 if (strcasecmp(name, (const char *)data.dptr) != 0) {
  98                         /* we have a collision */
  99                         collisions++;
 100                         printf("Collision between %s and %s   ->  %s "
 101                                 " (coll/tot: %u/%u)\n",
 102                                 name, data.dptr, shortname, collisions, total);
 103                 }
 104                 free(data.dptr);
 105         } else {
 106                 TDB_DATA namedata;
 107                 /* store it for later */
 108                 namedata.dptr = discard_const_p(uint8_t, name);
 109                 namedata.dsize = strlen(name)+1;
 110                 tdb_store_bystring(tdb, shortname, namedata, TDB_REPLACE);
 111         }
 112
 113         return true;
 114 }
 115
 116
 117 static char *gen_name(TALLOC_CTX *mem_ctx)
 118 {
 119         const char *chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz._-$~...";
 120         unsigned int max_idx = strlen(chars);
 121         unsigned int len;
 122         int i;
 123         char *p;
 124         char *name;
 125
 126         name = talloc_strdup(mem_ctx, "\\mangle_test\\");
 127
 128         len = 1 + random() % NAME_LENGTH;
 129
 130         name = talloc_realloc(mem_ctx, name, char, strlen(name) + len + 6);
 131         p = name + strlen(name);
 132
 133         for (i=0;i<len;i++) {
 134                 p[i] = chars[random() % max_idx];
 135         }
 136
 137         p[i] = 0;
 138
 139         if (ISDOT(p) || ISDOTDOT(p)) {
 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 ((len > 5) && (random() % 10 == 0)) {
 150                 strlcpy(p, "ABCDE", 6);
 151         }
 152
 153         /* and a high probability of a good extension length */
 154         if (random() % 2 == 0) {
 155                 char *s = strrchr(p, '.');
 156                 if (s) {
 157                         s[4] = 0;
 158                 }
 159         }
 160
 161         return name;
 162 }
 163
 164
 165 bool torture_mangle(struct torture_context *torture,
 166                     struct smbcli_state *cli)
 167 {
 168         extern int torture_numops;
 169         int i;
 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         if (!torture_setup_dir(cli, "\\mangle_test")) {
 179                 return false;
 180         }
 181
 182         for (i=0;i<torture_numops;i++) {
 183                 char *name;
 184
 185                 name = gen_name(torture);
 186
 187                 if (!test_one(torture, cli, name)) {
 188                         break;
 189                 }
 190                 if (total && total % 100 == 0) {
 191                         if (torture_setting_bool(torture, "progress", true)) {
 192                                 printf("collisions %u/%u  - %.2f%%   (%u failures)\r",
 193                                        collisions, total, (100.0*collisions) / total, failures);
 194                         }
 195                 }
 196         }
 197
 198         smbcli_unlink(cli->tree, "\\mangle_test\\*");
 199         if (NT_STATUS_IS_ERR(smbcli_rmdir(cli->tree, "\\mangle_test"))) {
 200                 printf("ERROR: Failed to remove directory\n");
 201                 return false;
 202         }
 203
 204         printf("\nTotal collisions %u/%u  - %.2f%%   (%u failures)\n",
 205                collisions, total, (100.0*collisions) / total, failures);
 206
 207         return (failures == 0);
 208 }