login/tst-utmp.c

   1 /* Tests for UTMP functions.
   2    Copyright (C) 1998-2019 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1998.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library 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 GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <errno.h>
  21 #include <error.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <sys/types.h>
  25 #include <time.h>
  26
  27 #ifdef UTMPX
  28 # include <utmpx.h>
  29 # define utmp utmpx
  30 # define utmpname utmpxname
  31 # define setutent setutxent
  32 # define getutent getutxent
  33 # define endutent endutxent
  34 # define getutline getutxline
  35 # define getutid getutxid
  36 # define pututline pututxline
  37 #else
  38 # include <utmp.h>
  39 #endif
  40
  41
  42 #if defined UTMPX || _HAVE_UT_TYPE
  43
  44 /* Prototype for our test function.  */
  45 static int do_test (int argc, char *argv[]);
  46
  47 /* We have a preparation function.  */
  48 static void do_prepare (int argc, char *argv[]);
  49 #define PREPARE do_prepare
  50
  51 /* This defines the `main' function and some more.  */
  52 #include <test-skeleton.c>
  53
  54
  55 /* These are for the temporary file we generate.  */
  56 char *name;
  57 int fd;
  58
  59 static void
  60 do_prepare (int argc, char *argv[])
  61 {
  62   size_t name_len;
  63
  64   name_len = strlen (test_dir);
  65   name = xmalloc (name_len + sizeof ("/utmpXXXXXX"));
  66   mempcpy (mempcpy (name, test_dir, name_len),
  67            "/utmpXXXXXX", sizeof ("/utmpXXXXXX"));
  68
  69   /* Open our test file.  */
  70   fd = mkstemp (name);
  71   if (fd == -1)
  72     error (EXIT_FAILURE, errno, "cannot open test file `%s'", name);
  73   add_temp_file (name);
  74 }
  75
  76 struct utmp entry[] =
  77 {
  78 #if defined UTMPX || _HAVE_UT_TV
  79 #define UT(a)  .ut_tv = { .tv_sec = (a)}
  80 #else
  81 #define UT(a)  .ut_time = (a)
  82 #endif
  83
  84   { .ut_type = BOOT_TIME, .ut_pid = 1, UT(1000) },
  85   { .ut_type = RUN_LVL, .ut_pid = 1, UT(2000) },
  86   { .ut_type = INIT_PROCESS, .ut_pid = 5, .ut_id = "si", UT(3000) },
  87   { .ut_type = LOGIN_PROCESS, .ut_pid = 23, .ut_line = "tty1", .ut_id = "1",
  88     .ut_user = "LOGIN", UT(4000) },
  89   { .ut_type = USER_PROCESS, .ut_pid = 24, .ut_line = "tty2", .ut_id = "2",
  90     .ut_user = "albert", UT(8000) },
  91   { .ut_type = USER_PROCESS, .ut_pid = 196, .ut_line = "ttyp0", .ut_id = "p0",
  92     .ut_user = "niels", UT(10000) },
  93   { .ut_type = DEAD_PROCESS, .ut_line = "ttyp1", .ut_id = "p1", UT(16000) },
  94   { .ut_type = EMPTY },
  95   { .ut_type = EMPTY }
  96 };
  97 int num_entries = sizeof entry / sizeof (struct utmp);
  98
  99 time_t entry_time = 20000;
 100 pid_t entry_pid = 234;
 101
 102 static int
 103 do_init (void)
 104 {
 105   int n;
 106
 107   setutent ();
 108
 109   for (n = 0; n < num_entries; n++)
 110     {
 111       if (pututline (&entry[n]) == NULL)
 112         {
 113           error (0, errno, "cannot write UTMP entry");
 114           return 1;
 115         }
 116     }
 117
 118   endutent ();
 119
 120   return 0;
 121 }
 122
 123
 124 static int
 125 do_check (void)
 126 {
 127   struct utmp *ut;
 128   int n;
 129
 130   setutent ();
 131
 132   n = 0;
 133   while ((ut = getutent ()))
 134     {
 135       if (n < num_entries
 136           && memcmp (ut, &entry[n], sizeof (struct utmp)))
 137         {
 138           error (0, 0, "UTMP entry does not match");
 139           return 1;
 140         }
 141
 142       n++;
 143     }
 144
 145   if (n != num_entries)
 146     {
 147       error (0, 0, "number of UTMP entries is incorrect");
 148       return 1;
 149     }
 150
 151   endutent ();
 152
 153   return 0;
 154 }
 155
 156 static int
 157 simulate_login (const char *line, const char *user)
 158 {
 159   int n;
 160
 161   for (n = 0; n < num_entries; n++)
 162     {
 163       if (strcmp (line, entry[n].ut_line) == 0
 164           || entry[n].ut_type == DEAD_PROCESS)
 165         {
 166           if (entry[n].ut_pid == DEAD_PROCESS)
 167             entry[n].ut_pid = (entry_pid += 27);
 168           entry[n].ut_type = USER_PROCESS;
 169           strncpy (entry[n].ut_user, user, sizeof (entry[n].ut_user));
 170 #if defined UTMPX || _HAVE_UT_TV - 0
 171           entry[n].ut_tv.tv_sec = (entry_time += 1000);
 172 #else
 173           entry[n].ut_time = (entry_time += 1000);
 174 #endif
 175           setutent ();
 176
 177           if (pututline (&entry[n]) == NULL)
 178             {
 179               error (0, errno, "cannot write UTMP entry");
 180               return 1;
 181             }
 182
 183           endutent ();
 184
 185           return 0;
 186         }
 187     }
 188
 189   error (0, 0, "no entries available");
 190   return 1;
 191 }
 192
 193 static int
 194 simulate_logout (const char *line)
 195 {
 196   int n;
 197
 198   for (n = 0; n < num_entries; n++)
 199     {
 200       if (strcmp (line, entry[n].ut_line) == 0)
 201         {
 202           entry[n].ut_type = DEAD_PROCESS;
 203           strncpy (entry[n].ut_user, "", sizeof (entry[n].ut_user));
 204 #if defined UTMPX || _HAVE_UT_TV - 0
 205           entry[n].ut_tv.tv_sec = (entry_time += 1000);
 206 #else
 207           entry[n].ut_time = (entry_time += 1000);
 208 #endif
 209           setutent ();
 210
 211           if (pututline (&entry[n]) == NULL)
 212             {
 213               error (0, errno, "cannot write UTMP entry");
 214               return 1;
 215             }
 216
 217           endutent ();
 218
 219           return 0;
 220         }
 221     }
 222
 223   error (0, 0, "no entry found for `%s'", line);
 224   return 1;
 225 }
 226
 227 static int
 228 check_login (const char *line)
 229 {
 230   struct utmp *up;
 231   struct utmp ut;
 232   int n;
 233
 234   setutent ();
 235
 236   strcpy (ut.ut_line, line);
 237   up = getutline (&ut);
 238   if (up == NULL)
 239     {
 240       error (0, errno, "cannot get entry for line `%s'", line);
 241       return 1;
 242     }
 243
 244   endutent ();
 245
 246   for (n = 0; n < num_entries; n++)
 247     {
 248       if (strcmp (line, entry[n].ut_line) == 0)
 249         {
 250           if (memcmp (up, &entry[n], sizeof (struct utmp)))
 251             {
 252               error (0, 0, "UTMP entry does not match");
 253               return 1;
 254             }
 255
 256           return 0;
 257         }
 258     }
 259
 260   error (0, 0, "bogus entry for line `%s'", line);
 261   return 1;
 262 }
 263
 264 static int
 265 check_logout (const char *line)
 266 {
 267   struct utmp ut;
 268
 269   setutent ();
 270
 271   strcpy (ut.ut_line, line);
 272   if (getutline (&ut) != NULL)
 273     {
 274       error (0, 0, "bogus login entry for `%s'", line);
 275       return 1;
 276     }
 277
 278   endutent ();
 279
 280   return 0;
 281 }
 282
 283 static int
 284 check_id (const char *id)
 285 {
 286   struct utmp *up;
 287   struct utmp ut;
 288   int n;
 289
 290   setutent ();
 291
 292   ut.ut_type = USER_PROCESS;
 293   strcpy (ut.ut_id, id);
 294   up = getutid (&ut);
 295   if (up == NULL)
 296     {
 297       error (0, errno, "cannot get entry for ID `%s'", id);
 298       return 1;
 299     }
 300
 301   endutent ();
 302
 303   for (n = 0; n < num_entries; n++)
 304     {
 305       if (strcmp (id, entry[n].ut_id) == 0)
 306         {
 307           if (memcmp (up, &entry[n], sizeof (struct utmp)))
 308             {
 309               error (0, 0, "UTMP entry does not match");
 310               return 1;
 311             }
 312
 313           return 0;
 314         }
 315     }
 316
 317   error (0, 0, "bogus entry for ID `%s'", id);
 318   return 1;
 319 }
 320
 321 static int
 322 check_type (int type)
 323 {
 324   struct utmp *up;
 325   struct utmp ut;
 326   int n;
 327
 328   setutent ();
 329
 330   ut.ut_type = type;
 331   up = getutid (&ut);
 332   if (up == NULL)
 333     {
 334       error (0, errno, "cannot get entry for type `%d'", type);
 335       return 1;
 336     }
 337
 338   endutent ();
 339
 340   for (n = 0; n < num_entries; n++)
 341     {
 342       if (type == entry[n].ut_type)
 343         {
 344           if (memcmp (up, &entry[n], sizeof (struct utmp)))
 345             {
 346               error (0, 0, "UTMP entry does not match");
 347               return 1;
 348             }
 349
 350           return 0;
 351         }
 352     }
 353
 354   error (0, 0, "bogus entry for type `%d'", type);
 355   return 1;
 356 }
 357
 358 static int
 359 do_test (int argc, char *argv[])
 360 {
 361   int result = 0;
 362
 363   utmpname (name);
 364
 365   result |= do_init ();
 366   result |= do_check ();
 367
 368   result |= simulate_login ("tty1", "erwin");
 369   result |= do_check ();
 370
 371   result |= simulate_login ("ttyp1", "paul");
 372   result |= do_check ();
 373
 374   result |= simulate_logout ("tty2");
 375   result |= do_check ();
 376
 377   result |= simulate_logout ("ttyp0");
 378   result |= do_check ();
 379
 380   result |= simulate_login ("ttyp2", "richard");
 381   result |= do_check ();
 382
 383   result |= check_login ("tty1");
 384   result |= check_logout ("ttyp0");
 385   result |= check_id ("p1");
 386   result |= check_id ("2");
 387   result |= check_id ("si");
 388   result |= check_type (BOOT_TIME);
 389   result |= check_type (RUN_LVL);
 390
 391   return result;
 392 }
 393
 394 #else
 395
 396 /* No field 'ut_type' in struct utmp.  */
 397 int
 398 main (void)
 399 {
 400   return 0;
 401 }
 402
 403 #endif