Remove internal mkdtemp and define feature test macro

mkdtemp():
   /* Since glibc 2.19: */ _DEFAULT_SOURCE
   || /* Glibc 2.19 and earlier: */ _BSD_SOURCE
   || /* Since glibc 2.10: */ _POSIX_C_SOURCE >= 200809L

_POSIX_C_SOURCE 200809L is enabled by _XOPEN_SOURCE >= 700.

Ref: http://man7.org/linux/man-pages/man7/feature_test_macros.7.html

5 files changed, 3 insertions, 253 deletions

diff --git a/src/Makefile.am b/src/Makefile.am
index f0cd3e7..1f125f8 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -6,12 +6,6 @@ bin_PROGRAMS = engrampa
 libexec_PROGRAMS = engrampa-server
 noinst_PROGRAMS = test-server
 
-if MKDTEMP_MISSING
-MKDTEMP_FILES=mkdtemp.c mkdtemp.h
-else
-MKDTEMP_FILES=
-endif
-
 if RUN_IN_PLACE
 privdatadir = $(top_srcdir)/data/
 privexecdir = $(abs_top_builddir)/src/commands/
@@ -157,7 +151,6 @@ COMMON_SOURCES = 			\
 	rar-utils.h			\
 	typedefs.h			\
 	ui.h				\
-	$(MKDTEMP_FILES)		\
 	$(BUILT_SOURCES)
 
 if ENABLE_JSON_GLIB
diff --git a/src/file-utils.c b/src/file-utils.c
index c8b1823..55d6bf4 100644
--- a/src/file-utils.c
+++ b/src/file-utils.c
@@ -20,6 +20,8 @@
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#define _XOPEN_SOURCE 700
+
 #include <config.h>
 #include <pwd.h>
 #include <stdio.h>
@@ -41,10 +43,6 @@
 #include "fr-init.h"
 
 
-#ifndef HAVE_MKDTEMP
-#include "mkdtemp.h"
-#endif
-
 #define BUF_SIZE 4096
 #define FILE_PREFIX    "file://"
 #define FILE_PREFIX_L  7
diff --git a/src/fr-command-tar.c b/src/fr-command-tar.c
index 61800ce..3c47399 100644
--- a/src/fr-command-tar.c
+++ b/src/fr-command-tar.c
@@ -20,7 +20,7 @@
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#define _XOPEN_SOURCE /* strptime */
+#define _XOPEN_SOURCE 700
 
 #include <config.h>
 
diff --git a/src/mkdtemp.c b/src/mkdtemp.c
deleted file mode 100644
index 27c49cc..0000000
--- a/src/mkdtemp.c
+++ /dev/null
@@ -1,201 +0,0 @@
-/* Copyright (C) 1999, 2001-2002 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 Library General Public License as
-   published by the Free Software Foundation; either version 2 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
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
-
-/* Extracted from misc/mkdtemp.c and sysdeps/posix/tempname.c.  */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-/* Specification.  */
-#include "mkdtemp.h"
-
-#include <errno.h>
-#ifndef __set_errno
-# define __set_errno(Val) errno = (Val)
-#endif
-
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <stdio.h>
-#ifndef TMP_MAX
-# define TMP_MAX 238328
-#endif
-
-#if HAVE_STDINT_H_WITH_UINTMAX || _LIBC
-# include <stdint.h>
-#endif
-
-#if HAVE_INTTYPES_H_WITH_UINTMAX || _LIBC
-# include <inttypes.h>
-#endif
-
-#if HAVE_UNISTD_H || _LIBC
-# include <unistd.h>
-#endif
-
-#if HAVE_GETTIMEOFDAY || _LIBC
-# if HAVE_SYS_TIME_H || _LIBC
-#  include <sys/time.h>
-# endif
-#else
-# if HAVE_TIME_H || _LIBC
-#  include <time.h>
-# endif
-#endif
-
-#include <sys/stat.h>
-#if STAT_MACROS_BROKEN
-# undef S_ISDIR
-#endif
-#if !defined S_ISDIR && defined S_IFDIR
-# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
-#endif
-#if !S_IRUSR && S_IREAD
-# define S_IRUSR S_IREAD
-#endif
-#if !S_IRUSR
-# define S_IRUSR 00400
-#endif
-#if !S_IWUSR && S_IWRITE
-# define S_IWUSR S_IWRITE
-#endif
-#if !S_IWUSR
-# define S_IWUSR 00200
-#endif
-#if !S_IXUSR && S_IEXEC
-# define S_IXUSR S_IEXEC
-#endif
-#if !S_IXUSR
-# define S_IXUSR 00100
-#endif
-
-#if !_LIBC
-# define __getpid getpid
-# define __gettimeofday gettimeofday
-# define __mkdir mkdir
-#endif
-
-/* Use the widest available unsigned type if uint64_t is not
-   available.  The algorithm below extracts a number less than 62**6
-   (approximately 2**35.725) from uint64_t, so ancient hosts where
-   uintmax_t is only 32 bits lose about 3.725 bits of randomness,
-   which is better than not having mkstemp at all.  */
-#if !defined UINT64_MAX && !defined uint64_t
-# define uint64_t uintmax_t
-#endif
-
-/* These are the characters used in temporary filenames.  */
-static const char letters[] =
-"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
-
-/* Generate a temporary file name based on TMPL.  TMPL must match the
-   rules for mk[s]temp (i.e. end in "XXXXXX").  The name constructed
-   does not exist at the time of the call to __gen_tempname.  TMPL is
-   overwritten with the result.
-
-   KIND is:
-   __GT_DIR:		create a directory, which will be mode 0700.
-
-   We use a clever algorithm to get hard-to-predict names. */
-static int
-gen_tempname (tmpl)
-     char *tmpl;
-{
-  int len;
-  char *XXXXXX;
-  static uint64_t value;
-  uint64_t random_time_bits;
-  int count, fd = -1;
-  int save_errno = errno;
-
-  len = strlen (tmpl);
-  if (len < 6 || strcmp (&tmpl[len - 6], "XXXXXX"))
-    {
-      __set_errno (EINVAL);
-      return -1;
-    }
-
-  /* This is where the Xs start.  */
-  XXXXXX = &tmpl[len - 6];
-
-  /* Get some more or less random data.  */
-#ifdef RANDOM_BITS
-  RANDOM_BITS (random_time_bits);
-#else
-# if HAVE_GETTIMEOFDAY || _LIBC
-  {
-    struct timeval tv;
-    __gettimeofday (&tv, NULL);
-    random_time_bits = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec;
-  }
-# else
-  random_time_bits = time (NULL);
-# endif
-#endif
-  value += random_time_bits ^ __getpid ();
-
-  for (count = 0; count < TMP_MAX; value += 7777, ++count)
-    {
-      uint64_t v = value;
-
-      /* Fill in the random bits.  */
-      XXXXXX[0] = letters[v % 62];
-      v /= 62;
-      XXXXXX[1] = letters[v % 62];
-      v /= 62;
-      XXXXXX[2] = letters[v % 62];
-      v /= 62;
-      XXXXXX[3] = letters[v % 62];
-      v /= 62;
-      XXXXXX[4] = letters[v % 62];
-      v /= 62;
-      XXXXXX[5] = letters[v % 62];
-
-      fd = __mkdir (tmpl, S_IRUSR | S_IWUSR | S_IXUSR);
-
-      if (fd >= 0)
-	{
-	  __set_errno (save_errno);
-	  return fd;
-	}
-      else if (errno != EEXIST)
-	return -1;
-    }
-
-  /* We got out of the loop because we ran out of combinations to try.  */
-  __set_errno (EEXIST);
-  return -1;
-}
-
-/* Generate a unique temporary directory from TEMPLATE.
-   The last six characters of TEMPLATE must be "XXXXXX";
-   they are replaced with a string that makes the filename unique.
-   The directory is created, mode 700, and its name is returned.
-   (This function comes from OpenBSD.) */
-char *
-mkdtemp (template)
-     char *template;
-{
-  if (gen_tempname (template))
-    return NULL;
-  else
-    return template;
-}
diff --git a/src/mkdtemp.h b/src/mkdtemp.h
deleted file mode 100644
index 542d177..0000000
--- a/src/mkdtemp.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/* Creating a private temporary directory.
-   Copyright (C) 2001 Free Software Foundation, Inc.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
-
-   This program 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 General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-#ifndef PARAMS
-# if __STDC__ || defined __GNUC__ || defined __SUNPRO_C || defined __cplusplus || __PROTOTYPES
-#  define PARAMS(Args) Args
-# else
-#  define PARAMS(Args) ()
-# endif
-#endif
-
-#if HAVE_MKDTEMP
-
-/* Get mkdtemp() declaration.  */
-#include <stdlib.h>
-
-#else
-
-/* Create a unique temporary directory from TEMPLATE.
-   The last six characters of TEMPLATE must be "XXXXXX";
-   they are replaced with a string that makes the directory name unique.
-   Returns TEMPLATE, or a null pointer if it cannot get a unique name.
-   The directory is created mode 700.  */
-extern char * mkdtemp PARAMS ((char *template));
-
-#endif