lexer: Reimplement for better testability and internationalization.

[pspp-builds.git] / src / language / utilities / permissions.c

diff --git a/src/language/utilities/permissions.c b/src/language/utilities/permissions.c
index bce2194a83dcd603ffc12ccc7ec5064579ea24b1..8b0e3f0c31926862e1135464460a30fccee3ca50 100644 (file)
--- a/src/language/utilities/permissions.c
+++ b/src/language/utilities/permissions.c
@@ -1,36 +1,34 @@
-/* PSPP - computes sample statistics.
-   Copyright (C) 2004 Free Software Foundation, Inc.
-   Author: John Darrington
+/* PSPP - a program for statistical analysis.
+   Copyright (C) 2004, 2010, 2011 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 of the
-   License, or (at your option) any later version.
+   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 3 of the License, 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.
+   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 Street, Fifth Floor, Boston, MA
-   02110-1301, USA. */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>. */
 
 #include <config.h>
-#include <libpspp/message.h>
+
+#include <errno.h>
 #include <stdlib.h>
-#include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/types.h>
 #include <unistd.h>
-#include <errno.h>
-#include <data/settings.h>
-#include <language/command.h>
-#include <libpspp/message.h>
-#include <language/lexer/lexer.h>
-#include <libpspp/misc.h>
-#include "stat-macros.h"
-#include <libpspp/str.h>
+
+#include "data/settings.h"
+#include "language/command.h"
+#include "language/lexer/lexer.h"
+#include "libpspp/i18n.h"
+#include "libpspp/message.h"
+#include "libpspp/misc.h"
+#include "libpspp/str.h"
 
 #include "gettext.h"
 #define _(msgid) gettext (msgid)
@@ -46,30 +44,33 @@ cmd_permissions (struct lexer *lexer, struct dataset *ds UNUSED)
 {
   char  *fn = 0;
 
-  lex_match (lexer, '/');
+  lex_match (lexer, T_SLASH);
 
   if (lex_match_id (lexer, "FILE"))
-    lex_match (lexer, '=');
+    lex_match (lexer, T_EQUALS);
+
+  if (!lex_force_string (lexer))
+    return CMD_FAILURE;
 
-  fn = ds_xstrdup (lex_tokstr (lexer));
+  fn = ss_xstrdup (lex_tokss (lexer));
   lex_force_match (lexer, T_STRING);
 
 
-  lex_match (lexer, '/');
-  
+  lex_match (lexer, T_SLASH);
+
   if ( ! lex_match_id (lexer, "PERMISSIONS"))
     goto error;
 
-  lex_match (lexer, '=');
+  lex_match (lexer, T_EQUALS);
 
   if ( lex_match_id (lexer, "READONLY"))
     {
-      if ( ! change_permissions(fn, PER_RO ) ) 
+      if ( ! change_permissions(fn, PER_RO ) )
        goto error;
     }
   else if ( lex_match_id (lexer, "WRITEABLE"))
     {
-      if ( ! change_permissions(fn, PER_RW ) ) 
+      if ( ! change_permissions(fn, PER_RW ) )
        goto error;
     }
   else
@@ -92,37 +93,43 @@ cmd_permissions (struct lexer *lexer, struct dataset *ds UNUSED)
 
 
 int
-change_permissions(const char *file_name, enum PER per)
+change_permissions (const char *file_name, enum PER per)
 {
+  char *locale_file_name;
   struct stat buf;
   mode_t mode;
 
-  if (get_safer_mode ())
+  if (settings_get_safer_mode ())
     {
       msg (SE, _("This command not allowed when the SAFER option is set."));
-      return CMD_FAILURE;
+      return 0;
     }
 
 
-  if ( -1 == stat(file_name, &buf) ) 
+  locale_file_name = utf8_to_filename (file_name);
+  if ( -1 == stat(locale_file_name, &buf) )
     {
       const int errnum = errno;
       msg (SE, _("Cannot stat %s: %s"), file_name, strerror(errnum));
+      free (locale_file_name);
       return 0;
     }
 
   if ( per == PER_RW )
-    mode = buf.st_mode | S_IWUSR ;
+    mode = buf.st_mode | 0200;
   else
-    mode = buf.st_mode & ~( S_IWOTH | S_IWUSR | S_IWGRP );
+    mode = buf.st_mode & ~0222;
 
-  if ( -1 == chmod(file_name, mode))
+  if ( -1 == chmod(locale_file_name, mode))
 
     {
       const int errnum = errno;
       msg (SE, _("Cannot change mode of %s: %s"), file_name, strerror(errnum));
+      free (locale_file_name);
       return 0;
     }
 
+  free (locale_file_name);
+
   return 1;
 }