示例#1
0
/* Copies the quoted string to p and returns the incremented p.
   There must be room for shell_quote_length (string) + 1 bytes at p.  */
char *
shell_quote_copy (char *p, const char *string)
{
  if (sh_quoting_options == NULL)
    init_sh_quoting_options ();
  return p + quotearg_buffer (p, (size_t)(-1), string, strlen (string),
                              sh_quoting_options);
}
示例#2
0
/* Returns the number of bytes needed for the quoted string.  */
size_t
shell_quote_length (const char *string)
{
  if (sh_quoting_options == NULL)
    init_sh_quoting_options ();
  return quotearg_buffer (NULL, 0, string, strlen (string),
                           sh_quoting_options);
}
示例#3
0
static char *
use_quotearg_buffer (const char *str, size_t *len)
{
  static char buf[100];
  size_t size;
  memset (buf, 0xa5, 100);
  size = quotearg_buffer (buf, 100, str, *len, NULL);
  *len = size;
  ASSERT ((unsigned char) buf[size + 1] == 0xa5);
  return buf;
}
示例#4
0
文件: printquoted.c 项目: DonCN/haiku
/*
 * Print S according to the format FORMAT, but if the destination is a tty, 
 * convert any potentially-dangerous characters.  The logic in this function 
 * was taken from ls.c in coreutils (at Sun Jun  5 20:42:51 2005 UTC).
 */
void
print_quoted (FILE *fp,
	      const struct quoting_options *qopts,
	      bool dest_is_tty,
	      const char *format,
	      const char *s)
{
  if (dest_is_tty)
    {
      char smallbuf[BUFSIZ];
      size_t len = quotearg_buffer (smallbuf, sizeof smallbuf, s, -1, qopts);
      char *buf;
      if (len < sizeof smallbuf)
	buf = smallbuf;
      else
	{
	  /* The original coreutils code uses alloca(), but I don't
	   * want to take on the anguish of introducing alloca() to
	   * 'find'.
	   */
	  buf = xmalloc (len + 1);
	  quotearg_buffer (buf, len + 1, s, -1, qopts);
	}

      /* Replace any remaining funny characters with '?'. */
      len = qmark_chars(buf, len);
      
      fprintf(fp, format, buf);	/* Print the quoted version */
      if (buf != smallbuf)
	{
	  free(buf);
	  buf = NULL;
	}
    }
  else
    {
      /* no need to quote things. */
      fprintf(fp, format, s);
    }
  
}
示例#5
0
int
main (int argc _GL_UNUSED, char *argv[])
{
  int i;
  bool ascii_only = MB_CUR_MAX == 1 && !isprint ((unsigned char) LQ[0]);

  set_program_name (argv[0]);

  /* This part of the program is hard-wired to the C locale since it
     does not call setlocale.  However, according to POSIX, the use of
     8-bit bytes in a character context in the C locale gives
     unspecified results (that is, the C locale charset is allowed to
     be unibyte with 8-bit bytes rejected [ASCII], unibyte with 8-bit
     bytes being characters [often ISO-8859-1], or multibyte [often
     UTF-8]).  We assume that the latter two cases will be
     indistinguishable in this test - that is, the LQ and RQ sequences
     will pass through unchanged in either type of charset.  So when
     testing for quoting of str7, use the ascii_only flag to decide
     what to expect for the 8-bit data being quoted.  */
  ASSERT (!isprint ('\033'));
  for (i = literal_quoting_style; i <= clocale_quoting_style; i++)
    {
      set_quoting_style (NULL, (enum quoting_style) i);
      if (!(i == locale_quoting_style || i == clocale_quoting_style)
          || (strcmp (locale_charset (), "ASCII") == 0
              || strcmp (locale_charset (), "ANSI_X3.4-1968") == 0))
        {
          compare_strings (use_quotearg_buffer, &results_g[i].group1,
                           ascii_only);
          compare_strings (use_quotearg, &results_g[i].group2,
                           ascii_only);
          if (i == c_quoting_style)
            compare_strings (use_quote_double_quotes, &results_g[i].group2,
                             ascii_only);
          compare_strings (use_quotearg_colon, &results_g[i].group3,
                           ascii_only);
        }
    }

  set_quoting_style (NULL, literal_quoting_style);
  ASSERT (set_quoting_flags (NULL, QA_ELIDE_NULL_BYTES) == 0);
  compare_strings (use_quotearg_buffer, &flag_results[0].group1, ascii_only);
  compare_strings (use_quotearg, &flag_results[0].group2, ascii_only);
  compare_strings (use_quotearg_colon, &flag_results[0].group3, ascii_only);

  set_quoting_style (NULL, c_quoting_style);
  ASSERT (set_quoting_flags (NULL, QA_ELIDE_OUTER_QUOTES)
          == QA_ELIDE_NULL_BYTES);
  compare_strings (use_quotearg_buffer, &flag_results[1].group1, ascii_only);
  compare_strings (use_quotearg, &flag_results[1].group2, ascii_only);
  compare_strings (use_quote_double_quotes, &flag_results[1].group2,
                   ascii_only);
  compare_strings (use_quotearg_colon, &flag_results[1].group3, ascii_only);

  ASSERT (set_quoting_flags (NULL, QA_SPLIT_TRIGRAPHS)
          == QA_ELIDE_OUTER_QUOTES);
  compare_strings (use_quotearg_buffer, &flag_results[2].group1, ascii_only);
  compare_strings (use_quotearg, &flag_results[2].group2, ascii_only);
  compare_strings (use_quote_double_quotes, &flag_results[2].group2,
                   ascii_only);
  compare_strings (use_quotearg_colon, &flag_results[2].group3, ascii_only);

  ASSERT (set_quoting_flags (NULL, 0) == QA_SPLIT_TRIGRAPHS);

  for (i = 0; i < sizeof custom_quotes / sizeof *custom_quotes; ++i)
    {
      set_custom_quoting (NULL,
                          custom_quotes[i][0], custom_quotes[i][1]);
      compare_strings (use_quotearg_buffer, &custom_results[i].group1,
                       ascii_only);
      compare_strings (use_quotearg, &custom_results[i].group2, ascii_only);
      compare_strings (use_quotearg_colon, &custom_results[i].group3,
                       ascii_only);
    }

  {
    /* Trigger the bug whereby quotearg_buffer would read beyond the NUL
       that defines the end of the string being quoted.  Use an input
       string whose NUL is the last byte before an unreadable page.  */
    char *z = zerosize_ptr ();

    if (z)
      {
        size_t q_len = 1024;
        char *q = malloc (q_len + 1);
        char buf[10];
        memset (q, 'Q', q_len);
        q[q_len] = 0;

        /* Z points to the boundary between a readable/writable page
           and one that is neither readable nor writable.  Position
           our string so its NUL is at the end of the writable one.  */
        char const *str = "____";
        size_t s_len = strlen (str);
        z -= s_len + 1;
        memcpy (z, str, s_len + 1);

        set_custom_quoting (NULL, q, q);
        /* Whether this actually triggers a SEGV depends on the
           implementation of memcmp: whether it compares only byte-at-
           a-time, and from left to right (no SEGV) or some other way.  */
        size_t n = quotearg_buffer (buf, sizeof buf, z, SIZE_MAX, NULL);
        ASSERT (n == s_len + 2 * q_len);
        ASSERT (memcmp (buf, q, sizeof buf) == 0);
        free (q);
      }
  }

  quotearg_free ();

  return 0;
}