Adding upstream version 1.21.3.upstream/1.21.3upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 361 insertions, 0 deletions

diff --git a/lib/fnmatch.c b/lib/fnmatch.c
new file mode 100644
index 0000000..b33a127
--- /dev/null
+++ b/lib/fnmatch.c
@@ -0,0 +1,361 @@
+/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _LIBC
+# include <libc-config.h>
+#endif
+
+/* Enable GNU extensions in fnmatch.h.  */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE    1
+#endif
+
+#include <fnmatch.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <ctype.h>
+#include <string.h>
+#include <stdlib.h>
+#if defined _LIBC || HAVE_ALLOCA
+# include <alloca.h>
+#endif
+#include <wchar.h>
+#include <wctype.h>
+#include <stddef.h>
+#include <stdbool.h>
+
+/* We need some of the locale data (the collation sequence information)
+   but there is no interface to get this information in general.  Therefore
+   we support a correct implementation only in glibc.  */
+#ifdef _LIBC
+# include "../locale/localeinfo.h"
+# include "../locale/coll-lookup.h"
+# include <shlib-compat.h>
+
+# define CONCAT(a,b) __CONCAT(a,b)
+# define btowc __btowc
+# define iswctype __iswctype
+# define mbsrtowcs __mbsrtowcs
+# define mempcpy __mempcpy
+# define strnlen __strnlen
+# define towlower __towlower
+# define wcscat __wcscat
+# define wcslen __wcslen
+# define wctype __wctype
+# define wmemchr __wmemchr
+# define wmempcpy __wmempcpy
+# define fnmatch __fnmatch
+extern int fnmatch (const char *pattern, const char *string, int flags);
+#endif
+
+#ifdef _LIBC
+# if __GNUC__ >= 7
+#  define FALLTHROUGH __attribute__ ((__fallthrough__))
+# else
+#  define FALLTHROUGH ((void) 0)
+# endif
+#else
+# include "attribute.h"
+#endif
+
+#include <intprops.h>
+#include <flexmember.h>
+
+#ifdef _LIBC
+typedef ptrdiff_t idx_t;
+#else
+# include "idx.h"
+#endif
+
+/* We often have to test for FNM_FILE_NAME and FNM_PERIOD being both set.  */
+#define NO_LEADING_PERIOD(flags) \
+  ((flags & (FNM_FILE_NAME | FNM_PERIOD)) == (FNM_FILE_NAME | FNM_PERIOD))
+
+#ifndef _LIBC
+# if HAVE_ALLOCA
+/* The OS usually guarantees only one guard page at the bottom of the stack,
+   and a page size can be as small as 4096 bytes.  So we cannot safely
+   allocate anything larger than 4096 bytes.  Also care for the possibility
+   of a few compiler-allocated temporary stack slots.  */
+#  define __libc_use_alloca(n) ((n) < 4032)
+# else
+/* Just use malloc.  */
+#  define __libc_use_alloca(n) false
+#  undef alloca
+#  define alloca(n) malloc (n)
+# endif
+# define alloca_account(size, avar) ((avar) += (size), alloca (size))
+#endif
+
+/* Provide support for user-defined character classes, based on the functions
+   from ISO C 90 amendment 1.  */
+#ifdef CHARCLASS_NAME_MAX
+# define CHAR_CLASS_MAX_LENGTH CHARCLASS_NAME_MAX
+#else
+/* This shouldn't happen but some implementation might still have this
+   problem.  Use a reasonable default value.  */
+# define CHAR_CLASS_MAX_LENGTH 256
+#endif
+
+#define IS_CHAR_CLASS(string) wctype (string)
+
+/* Avoid depending on library functions or files
+   whose names are inconsistent.  */
+
+/* Global variable.  */
+static int posixly_correct;
+
+/* Note that this evaluates C many times.  */
+#define FOLD(c) ((flags & FNM_CASEFOLD) ? tolower (c) : (c))
+#define CHAR    char
+#define UCHAR   unsigned char
+#define INT     int
+#define FCT     internal_fnmatch
+#define EXT     ext_match
+#define END     end_pattern
+#define STRUCT  fnmatch_struct
+#define L_(CS)  CS
+#define BTOWC(C) btowc (C)
+#define STRLEN(S) strlen (S)
+#define STRCAT(D, S) strcat (D, S)
+#define MEMPCPY(D, S, N) mempcpy (D, S, N)
+#define MEMCHR(S, C, N) memchr (S, C, N)
+#define WIDE_CHAR_VERSION 0
+#ifdef _LIBC
+# include <locale/weight.h>
+# define FINDIDX findidx
+#endif
+#include "fnmatch_loop.c"
+
+
+#define FOLD(c) ((flags & FNM_CASEFOLD) ? towlower (c) : (c))
+#define CHAR    wchar_t
+#define UCHAR   wint_t
+#define INT     wint_t
+#define FCT     internal_fnwmatch
+#define EXT     ext_wmatch
+#define END     end_wpattern
+#define L_(CS)  L##CS
+#define BTOWC(C) (C)
+#define STRLEN(S) wcslen (S)
+#define STRCAT(D, S) wcscat (D, S)
+#define MEMPCPY(D, S, N) wmempcpy (D, S, N)
+#define MEMCHR(S, C, N) wmemchr (S, C, N)
+#define WIDE_CHAR_VERSION 1
+#ifdef _LIBC
+/* Change the name the header defines so it doesn't conflict with
+   the <locale/weight.h> version included above.  */
+# define findidx findidxwc
+# include <locale/weightwc.h>
+# undef findidx
+# define FINDIDX findidxwc
+#endif
+
+#undef IS_CHAR_CLASS
+/* We have to convert the wide character string in a multibyte string.  But
+   we know that the character class names consist of alphanumeric characters
+   from the portable character set, and since the wide character encoding
+   for a member of the portable character set is the same code point as
+   its single-byte encoding, we can use a simplified method to convert the
+   string to a multibyte character string.  */
+static wctype_t
+is_char_class (const wchar_t *wcs)
+{
+  char s[CHAR_CLASS_MAX_LENGTH + 1];
+  char *cp = s;
+
+  do
+    {
+      /* Test for a printable character from the portable character set.  */
+#ifdef _LIBC
+      if (*wcs < 0x20 || *wcs > 0x7e
+          || *wcs == 0x24 || *wcs == 0x40 || *wcs == 0x60)
+        return (wctype_t) 0;
+#else
+      switch (*wcs)
+        {
+        case L' ': case L'!': case L'"': case L'#': case L'%':
+        case L'&': case L'\'': case L'(': case L')': case L'*':
+        case L'+': case L',': case L'-': case L'.': case L'/':
+        case L'0': case L'1': case L'2': case L'3': case L'4':
+        case L'5': case L'6': case L'7': case L'8': case L'9':
+        case L':': case L';': case L'<': case L'=': case L'>':
+        case L'?':
+        case L'A': case L'B': case L'C': case L'D': case L'E':
+        case L'F': case L'G': case L'H': case L'I': case L'J':
+        case L'K': case L'L': case L'M': case L'N': case L'O':
+        case L'P': case L'Q': case L'R': case L'S': case L'T':
+        case L'U': case L'V': case L'W': case L'X': case L'Y':
+        case L'Z':
+        case L'[': case L'\\': case L']': case L'^': case L'_':
+        case L'a': case L'b': case L'c': case L'd': case L'e':
+        case L'f': case L'g': case L'h': case L'i': case L'j':
+        case L'k': case L'l': case L'm': case L'n': case L'o':
+        case L'p': case L'q': case L'r': case L's': case L't':
+        case L'u': case L'v': case L'w': case L'x': case L'y':
+        case L'z': case L'{': case L'|': case L'}': case L'~':
+          break;
+        default:
+          return (wctype_t) 0;
+        }
+#endif
+
+      /* Avoid overrunning the buffer.  */
+      if (cp == s + CHAR_CLASS_MAX_LENGTH)
+        return (wctype_t) 0;
+
+      *cp++ = (char) *wcs++;
+    }
+  while (*wcs != L'\0');
+
+  *cp = '\0';
+
+  return wctype (s);
+}
+#define IS_CHAR_CLASS(string) is_char_class (string)
+
+#include "fnmatch_loop.c"
+
+
+int
+fnmatch (const char *pattern, const char *string, int flags)
+{
+  if (__glibc_unlikely (MB_CUR_MAX != 1))
+    {
+      mbstate_t ps;
+      size_t n;
+      const char *p;
+      wchar_t *wpattern_malloc = NULL;
+      wchar_t *wpattern;
+      wchar_t *wstring_malloc = NULL;
+      wchar_t *wstring;
+      size_t alloca_used = 0;
+
+      /* Convert the strings into wide characters.  */
+      memset (&ps, '\0', sizeof (ps));
+      p = pattern;
+      n = strnlen (pattern, 1024);
+      if (__glibc_likely (n < 1024))
+        {
+          wpattern = (wchar_t *) alloca_account ((n + 1) * sizeof (wchar_t),
+                                                 alloca_used);
+          n = mbsrtowcs (wpattern, &p, n + 1, &ps);
+          if (__glibc_unlikely (n == (size_t) -1))
+            /* Something wrong.
+               XXX Do we have to set 'errno' to something which mbsrtows hasn't
+               already done?  */
+            return -1;
+          if (p)
+            {
+              memset (&ps, '\0', sizeof (ps));
+              goto prepare_wpattern;
+            }
+        }
+      else
+        {
+        prepare_wpattern:
+          n = mbsrtowcs (NULL, &pattern, 0, &ps);
+          if (__glibc_unlikely (n == (size_t) -1))
+            /* Something wrong.
+               XXX Do we have to set 'errno' to something which mbsrtows hasn't
+               already done?  */
+            return -1;
+          if (__glibc_unlikely (n >= (size_t) -1 / sizeof (wchar_t)))
+            {
+              __set_errno (ENOMEM);
+              return -2;
+            }
+          wpattern_malloc = wpattern
+            = (wchar_t *) malloc ((n + 1) * sizeof (wchar_t));
+          assert (mbsinit (&ps));
+          if (wpattern == NULL)
+            return -2;
+          (void) mbsrtowcs (wpattern, &pattern, n + 1, &ps);
+        }
+
+      assert (mbsinit (&ps));
+      n = strnlen (string, 1024);
+      p = string;
+      if (__glibc_likely (n < 1024))
+        {
+          wstring = (wchar_t *) alloca_account ((n + 1) * sizeof (wchar_t),
+                                                alloca_used);
+          n = mbsrtowcs (wstring, &p, n + 1, &ps);
+          if (__glibc_unlikely (n == (size_t) -1))
+            {
+              /* Something wrong.
+                 XXX Do we have to set 'errno' to something which
+                 mbsrtows hasn't already done?  */
+            free_return:
+              free (wpattern_malloc);
+              return -1;
+            }
+          if (p)
+            {
+              memset (&ps, '\0', sizeof (ps));
+              goto prepare_wstring;
+            }
+        }
+      else
+        {
+        prepare_wstring:
+          n = mbsrtowcs (NULL, &string, 0, &ps);
+          if (__glibc_unlikely (n == (size_t) -1))
+            /* Something wrong.
+               XXX Do we have to set 'errno' to something which mbsrtows hasn't
+               already done?  */
+            goto free_return;
+          if (__glibc_unlikely (n >= (size_t) -1 / sizeof (wchar_t)))
+            {
+              free (wpattern_malloc);
+              __set_errno (ENOMEM);
+              return -2;
+            }
+
+          wstring_malloc = wstring
+            = (wchar_t *) malloc ((n + 1) * sizeof (wchar_t));
+          if (wstring == NULL)
+            {
+              free (wpattern_malloc);
+              return -2;
+            }
+          assert (mbsinit (&ps));
+          (void) mbsrtowcs (wstring, &string, n + 1, &ps);
+        }
+
+      int res = internal_fnwmatch (wpattern, wstring, wstring + n,
+                                   flags & FNM_PERIOD, flags, NULL,
+                                   alloca_used);
+
+      free (wstring_malloc);
+      free (wpattern_malloc);
+
+      return res;
+    }
+
+  return internal_fnmatch (pattern, string, string + strlen (string),
+                           flags & FNM_PERIOD, flags, NULL, 0);
+}
+
+#undef fnmatch
+versioned_symbol (libc, __fnmatch, fnmatch, GLIBC_2_2_3);
+#if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_2_3)
+strong_alias (__fnmatch, __fnmatch_old)
+compat_symbol (libc, __fnmatch_old, fnmatch, GLIBC_2_0);
+#endif
+libc_hidden_ver (__fnmatch, fnmatch)