util-vserver-0.30.208

[util-vserver.git] / src / check-unixfile.c

diff --git a/src/check-unixfile.c b/src/check-unixfile.c
new file mode 100644 (file)
index 0000000..a8d94e9
--- /dev/null
+++ b/src/check-unixfile.c
@@ -0,0 +1,115 @@
+// $Id: check-unixfile.c,v 1.1 2005/01/27 19:13:04 ensc Exp $    --*- c -*--
+
+// Copyright (C) 2005 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
+//  
+// 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; version 2 of the License.
+//  
+// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include "util.h"
+
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <limits.h>
+
+#define ENSC_WRAPPERS_PREFIX   "check-unixfile: "
+#define ENSC_WRAPPERS_FCNTL    1
+#define ENSC_WRAPPERS_UNISTD   1
+#include <wrappers.h>
+
+int            wrapper_exit_code = 255;
+
+static void
+showHelp(int fd, char const *cmd)
+{
+  WRITE_MSG(fd, "Usage:  ");
+  WRITE_STR(fd, cmd);
+  WRITE_MSG(fd,
+           " [--] <file>+\n\n"
+           "Please report bugs to " PACKAGE_BUGREPORT "\n");
+  exit(0);
+}
+
+static void
+showVersion()
+{
+  WRITE_MSG(1,
+           "check-unixfile " VERSION " -- execute some basic fileformat checks\n"
+           "This program is part of " PACKAGE_STRING "\n\n"
+           "Copyright (C) 2005 Enrico Scholz\n"
+           VERSION_COPYRIGHT_DISCLAIMER);
+  exit(0);
+}
+
+static bool
+checkFile(char const *fname)
+{
+  int          fd   = Eopen(fname, O_RDONLY, 0);
+  off_t                l    = Elseek(fd, 0, SEEK_END);
+  char const * data = 0;
+  bool         res  = true;
+
+  if (l>100*1024*1024) {
+    WRITE_MSG(2, "WARNING: '");
+    WRITE_STR(2, fname);
+    WRITE_STR(2, "' is too large for a vserver configuration file\n");
+    res = false;
+  }
+  else if (l>0) {
+    data = mmap(0, l, PROT_READ, MAP_PRIVATE, fd, 0);
+    if (data==0) {
+      perror("mmap()");
+      exit(wrapper_exit_code);
+    }
+
+    if (data[l-1]!='\n') {
+      WRITE_MSG(2, "WARNING: '");
+      WRITE_STR(2, fname);
+      WRITE_MSG(2, "' does not end on newline\n");
+      res = false;
+    }
+    
+    munmap(const_cast(char *)(data), l);
+  }
+
+  Eclose(fd);
+
+  return res;
+}
+
+int main(int argc, char *argv[])
+{
+  int          idx    = 1;
+  bool         ok     = true;
+  bool         passed = false;
+
+  if (argc>=2) {
+    if (strcmp(argv[1], "--help")   ==0) showHelp(1, argv[0]);
+    if (strcmp(argv[1], "--version")==0) showVersion();
+    if (strcmp(argv[1], "--")       ==0) ++idx;
+  }
+
+  for (; idx<argc; ++idx)
+    if (checkFile(argv[idx])) passed = true;
+    else                      ok     = false;
+
+  if (ok)          return 0;
+  else if (passed) return 2;
+  else             return 1;
+}