xdasd_cmdline.c

Go to the documentation of this file.

/*----------------------------------------------------------------------------
 * Copyright (c) 2006, Novell, Inc.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are 
 * met:
 * 
 *     * Redistributions of source code must retain the above copyright 
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright 
 *       notice, this list of conditions and the following disclaimer in the 
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Novell nor the names of its contributors 
 *       may be used to endorse or promote products derived from this 
 *       software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *--------------------------------------------------------------------------*/

#include "xdasd_cmdline.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#ifndef PACKAGE_VERSION
# error PACKAGE_VERSION not defined
#endif

#ifndef SVNREV
# define SVNREV "0"
#endif

#define XDASD_VERSION      PACKAGE_VERSION "." SVNREV

#ifdef _WIN32
# define XDASD_CFGPATH     "%SystemRoot%"
# define XDASD_FLTPATH     "%SystemRoot%"
# define XDASD_LOGPATH     "%SystemRoot%"
# define XDASD_MCFPATH     "%SystemRoot%"
# define XDASD_RUNPATH     "%SystemRoot%"
#else
# define XDASD_CFGPATH     ETCDIR
# define XDASD_FLTPATH     ETCDIR
# define XDASD_LOGPATH     LSTDIR "/log"
# define XDASD_MCFPATH     LSTDIR "/log"
# define XDASD_RUNPATH     LSTDIR "/run/xdasd"
#endif

#define XDASD_CFGFNAME     "xdasd.conf"
#define XDASD_FLTFNAME     "xdasd.filter"
#define XDASD_LOGFNAME     "xdasd.log"
#define XDASD_MDIRNAME     "xdasd.mcache"

/* default cfg, log, msg, run paths */
#define XDASD_DEF_CFGFILE  XDASD_CFGPATH "/" XDASD_CFGFNAME
#define XDASD_DEF_FLTFILE  XDASD_FLTPATH "/" XDASD_FLTFNAME
#define XDASD_DEF_LOGFILE  XDASD_LOGPATH "/" XDASD_LOGFNAME
#define XDASD_DEF_MSGFDIR  XDASD_MCFPATH "/" XDASD_MDIRNAME
#define XDASD_DEF_RUNPATH  XDASD_RUNPATH

/* expand environment strings or copy them, zero terminate, return d */
#ifdef _WIN32
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# define strnenv(d,s,n) (ExpandEnvironmentStringsA((LPCSTR)(s),(LPSTR)(d),(n)-1),(d))
#else
# define strnenv(d,s,n) ((strncpy((d),(s),(n)-1)[(n)-1] = 0),(d))
#endif

#ifdef _WIN32
# define XDASD_USAGE_STRING \
  "[-cefhklmpv] [[-irsx] | [-d]]\n" \
  "  Common options:\n" \
  "    -c <file>  use <file> as the configuration file.\n" \
  "    -e <level> set the logging level to <level>.\n" \
  "    -f <file>  use <file> as the filter specification file.\n" \
  "    -h         display this help screen and terminate.\n" \
  "    -k <file>  write dynamic listen socket number to <file>.\n" \
  "    -l <file>  use <file> as the log file.\n" \
  "    -m <dir>   use <dir> as the message cache directory.\n" \
  "    -p <dir>   use <dir> as the run path (for ipc files).\n" \
  "    -v         display version information and terminate.\n" \
  "\n" \
  "  Windows-specific options:\n" \
  "    -i [auto]  install as a Windows service (auto: start on boot).\n" \
  "    -r         remove the previously installed Windows service.\n" \
  "    -s         start the previously installed Windows service.\n" \
  "    -x         stop the previously installed Windows service."
#else
# define XDASD_USAGE_STRING \
  "[-cfhklmpv] [-d]\n" \
  "  Common options:\n" \
  "    -c <file>  use <file> as the configuration file.\n" \
  "    -e <level> set the logging level to <level>.\n" \
  "    -f <file>  use <file> as the filter specification file.\n" \
  "    -h         display this help screen and terminate.\n" \
  "    -k <file>  write dynamic listen socket number to <file>.\n" \
  "    -l <file>  use <file> as the log file.\n" \
  "    -m <dir>   use <dir> as the message cache directory.\n" \
  "    -p <dir>   use <dir> as the run path (for pid and socket files).\n" \
  "    -v         display version information and terminate.\n" \
  "\n" \
  "  Unix-specific options:\n" \
  "    -d         detach process from console (daemonize).\n"
#endif

static void xdasd_print_usage(void)
{
   fprintf(stderr, "USAGE: xdasd " XDASD_USAGE_STRING "\n");
}

/*--------------------------------------------------------------------------*/

int xdasd_parse_cmdline(int argc, char ** argv, XDASDCmdLine * cmdline)
{
   int i;

   /* Set defaults */
   memset(cmdline, 0, sizeof(*cmdline));
   (void)strnenv(cmdline->confile, XDASD_DEF_CFGFILE, sizeof(cmdline->confile));
   (void)strnenv(cmdline->fltfile, XDASD_DEF_FLTFILE, sizeof(cmdline->fltfile));
   (void)strnenv(cmdline->logfile, XDASD_DEF_LOGFILE, sizeof(cmdline->logfile));
   (void)strnenv(cmdline->msgfdir, XDASD_DEF_MSGFDIR, sizeof(cmdline->msgfdir));
   (void)strnenv(cmdline->runpath, XDASD_DEF_RUNPATH, sizeof(cmdline->runpath));

   strcpy(cmdline->verstr, XDASD_VERSION);

   for (i = 1; i < argc; i++)
   {
      if (strcmp(argv[i], "-c") == 0)
      {
         i++;
         if (i >= argc) goto USAGE;
         strncpy(cmdline->confile, argv[i], sizeof(cmdline->confile) - 1);
      }
      else if (strcmp(argv[i], "-e") == 0)
      {
         i++;
         if (i > argc) goto USAGE;
         cmdline->loglevel = atoi(argv[i]);
      }
      else if (strcmp(argv[i], "-f") == 0)
      {
         i++;
         if (i >= argc) goto USAGE;
         strncpy(cmdline->fltfile, argv[i], sizeof(cmdline->fltfile) - 1);
      }
      else if (strcmp(argv[i], "-l") == 0)
      {
         i++;
         if (i >= argc) goto USAGE;
         strncpy(cmdline->logfile, argv[i], sizeof(cmdline->logfile) - 1);
      }
      else if (strcmp(argv[i], "-m") == 0)
      {
         int lastch;
         i++;
         if (i >= argc) goto USAGE;
         strncpy(cmdline->msgfdir, argv[i], sizeof(cmdline->msgfdir) - 1);

         /* remove any trailing slashes in order to normalize the path */
         lastch = (int)(strlen(cmdline->msgfdir) - 1);
         if (cmdline->msgfdir[lastch] == '/' 
               || cmdline->msgfdir[lastch] == '\\')
            cmdline->msgfdir[lastch] = 0;
      }
      else if (strcmp(argv[i], "-k") == 0)
      {
         i++;
         if (i >= argc) goto USAGE;
         strncpy(cmdline->sktfile, argv[i], sizeof(cmdline->sktfile) - 1);
      }
#ifndef _WIN32
      else if (strcmp(argv[i], "-p") == 0)
      {
         i++;
         if (i >= argc) goto USAGE;
         strncpy(cmdline->runpath, argv[i], sizeof(cmdline->runpath) - 1);
      }
      else if (strcmp(argv[i], "-d") == 0)
         cmdline->detach = 1;
#else
      else if (strcmp(argv[i], "-i") == 0)
      {
         cmdline->action = XDASD_INSTALL;
         if (i + 1 < argc && strcmp(argv[i + 1], "auto") == 0)
         {
            i++;
            cmdline->autostart = 1;
         }
      }
      else if (strcmp(argv[i], "-r") == 0 
            || strcmp(argv[i], "-u") == 0)
         cmdline->action = XDASD_REMOVE;
      else if (strcmp(argv[i], "-s") == 0)
         cmdline->action = XDASD_START;
      else if (strcmp(argv[i], "-x") == 0
            || strcmp(argv[i], "--kill") == 0)
         cmdline->action = XDASD_STOP;
#endif
      else if (strcmp(argv[i], "-v") == 0
            || strcmp(argv[i], "-V") == 0
            || strcmp(argv[i], "-ver") == 0
            || strcmp(argv[i], "--ver") == 0
            || strcmp(argv[i], "--version") == 0
            || strcmp(argv[i], "--Version") == 0)
      {
         fprintf(stderr, "OpenXDAS xdasd version: %s\n", cmdline->verstr);
         exit(1);
      }
      else if (strcmp(argv[i], "-h") == 0 
            || strcmp(argv[i], "-H") == 0
            || strcmp(argv[i], "-?") == 0 
            || strcmp(argv[i], "--help") == 0
            || strcmp(argv[i], "--Help") == 0)
      {
         xdasd_print_usage();
         exit(1);
      }
      else 
         goto USAGE;
   }
   return 0;

USAGE:

   xdasd_print_usage();
   return -1;
}