1  /* Test for ,ccs= handling in fopen.
       2     Copyright (C) 2001-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <errno.h>
      20  #include <fcntl.h>
      21  #include <locale.h>
      22  #include <mcheck.h>
      23  #include <stdio.h>
      24  #include <stdlib.h>
      25  #include <string.h>
      26  #include <wchar.h>
      27  #include <sys/resource.h>
      28  #include <support/check.h>
      29  #include <support/support.h>
      30  #include <support/xstdio.h>
      31  
      32  static const char inputfile[] = "../iconvdata/testdata/ISO-8859-1";
      33  
      34  static int
      35  do_bz17916 (void)
      36  {
      37    /* BZ #17916 -- check invalid large ccs= case.  */
      38    struct rlimit rl;
      39    getrlimit (RLIMIT_STACK, &rl);
      40    rl.rlim_cur = 1024 * 1024;
      41    setrlimit (RLIMIT_STACK, &rl);
      42  
      43    const size_t sz = 2 * 1024 * 1024;
      44    char *ccs = xmalloc (sz);
      45    strcpy (ccs, "r,ccs=");
      46    memset (ccs + 6, 'A', sz - 6 - 1);
      47    ccs[sz - 1] = '\0';
      48  
      49    FILE *fp = fopen (inputfile, ccs);
      50    if (fp != NULL)
      51      {
      52        printf ("unexpected success\n");
      53        free (ccs);
      54        fclose (fp);
      55        return 1;
      56      }
      57  
      58    free (ccs);
      59  
      60    return 0;
      61  }
      62  
      63  static int
      64  do_bz18906 (void)
      65  {
      66    /* BZ #18906 -- check processing of ,ccs= as flags case.  */
      67  
      68    const char *ccs = "r,ccs=+ISO-8859-1";
      69    size_t retval;
      70  
      71    FILE *fp = fopen (inputfile, ccs);
      72    int flags;
      73  
      74    TEST_VERIFY (fp != NULL);
      75  
      76    if (fp != NULL)
      77      {
      78        flags = fcntl (fileno (fp), F_GETFL);
      79        retval = ((flags & O_ACCMODE) == O_RDWR);
      80        retval |= ((flags & O_ACCMODE) == O_WRONLY);
      81        TEST_COMPARE (retval, false);
      82        fclose (fp);
      83      }
      84  
      85    return EXIT_SUCCESS;
      86  }
      87  
      88  static int
      89  do_test (void)
      90  {
      91    FILE *fp;
      92  
      93    mtrace ();
      94  
      95    xsetlocale (LC_ALL, "de_DE.UTF-8");
      96  
      97    fp = xfopen (inputfile, "r,ccs=ISO-8859-1");
      98  
      99    while (! feof_unlocked (fp))
     100      {
     101        wchar_t buf[200];
     102  
     103        if (fgetws_unlocked (buf, sizeof (buf) / sizeof (buf[0]), fp) == NULL)
     104  	break;
     105  
     106        fputws (buf, stdout);
     107      }
     108  
     109    xfclose (fp);
     110  
     111    TEST_COMPARE (do_bz17916 (), 0);
     112    TEST_COMPARE (do_bz18906 (), 0);
     113  
     114    return EXIT_SUCCESS;
     115  }
     116  
     117  #include <support/test-driver.c>