Open Source Projects Europe

/* Copyright (C) 2004 J.F.Dockes
 *   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 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.
 */
#ifndef TEST_ECRONTAB
#include "autoconfig.h"

#include "ecrontab.h"
#include "execmd.h"
#include "smallut.h"

bool editCrontab(const string& marker, const string& id, 
		      const string& sched, const string& cmd, string& reason)
{
    string crontab;
    ExecCmd croncmd;
    list<string> args; 
    int status;

    // Retrieve current crontab contents. An error here means that no
    // crontab exists, and is not fatal (just use empty string)
    args.push_back("-l");
    if ((status = croncmd.doexec("crontab", args, 0, &crontab))) {
	// Special case: cmd is empty, no crontab, don't create one
	if (cmd.empty())
	    return true;
    }

    // Split crontab into lines
    vector<string> lines;
    stringToTokens(crontab, lines, "\n");

    // Remove old copy if any
    for (vector<string>::iterator it = lines.begin();
	 it != lines.end(); it++) {
	if (it->find(marker) != string::npos && 
	    it->find(id) != string::npos) {
	    lines.erase(it);
	    break;
	}
    }

    if (!cmd.empty()) {
	string nline = sched + " " + marker + " " + id + " " + cmd;
	lines.push_back(nline);
    }
    
    // Rebuild new crontab and install it
    crontab.clear();
    for (vector<string>::iterator it = lines.begin();
	 it != lines.end(); it++) {
	crontab += *it + "\n";
    }

    args.clear();
    args.push_back("-");
    if ((status = croncmd.doexec("crontab", args, &crontab, 0))) {
	char nbuf[30]; 
	sprintf(nbuf, "0x%x", status);
	reason = string("Exec crontab -l failed: status: ") + nbuf;
    }

    return true;
}

bool checkCrontabUnmanaged(const string& marker, const string& data)
{
    string crontab;
    ExecCmd croncmd;
    list<string> args; 
    int status;

    // Retrieve current crontab contents. An error here means that no
    // crontab exists.
    args.push_back("-l");
    if ((status = croncmd.doexec("crontab", args, 0, &crontab))) {
	return false;
    }

    // Split crontab into lines
    vector<string> lines;
    stringToTokens(crontab, lines, "\n");

    // Scan crontab
    for (vector<string>::iterator it = lines.begin();
	 it != lines.end(); it++) {
	if (it->find(marker) == string::npos && 
	    it->find(data) != string::npos) {
	    return true;
	}
    }
    return false;
}

#else // TEST ->

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

#include <string>
#include <iostream>

using namespace std;

#include "ecrontab.h"


static char *thisprog;

static char usage [] =
" -a add or replace crontab line \n"
" -a delete crontab line \n"
" -c <string> check for unmanaged lines for string\n"
;
static void
Usage(void)
{
    fprintf(stderr, "%s: usage:\n%s", thisprog, usage);
    exit(1);
}

static int     op_flags;
#define OPT_MOINS 0x1
#define OPT_a	  0x2 
#define OPT_d	  0x4 
#define OPT_w     0x8
#define OPT_c     0x10

const string& marker("RCLCRON_RCLINDEX=");
// Note of course the -w does not make sense for a cron entry
const string& cmd0("recollindex -w ");
const string& id("RECOLL_CONFDIR=/home/dockes/.recoll");
const string& sched("30 8 * * *");

int main(int argc, char **argv)
{
  thisprog = argv[0];
  argc--; argv++;

  string wt = "10";
  string cmd;

  while (argc > 0 && **argv == '-') {
    (*argv)++;
    if (!(**argv))
      /* Cas du "adb - core" */
      Usage();
    while (**argv)
      switch (*(*argv)++) {
      case 'a':	op_flags |= OPT_a; break;
      case 'c':	op_flags |= OPT_c; if (argc < 2)  Usage();
	  cmd = *(++argv); argc--; 
	  goto b1;
      case 'd':	op_flags |= OPT_d; break;
      case 'w':	op_flags |= OPT_w; if (argc < 2)  Usage();
	  wt = *(++argv); argc--; 
	  goto b1;
	  
      default: Usage();	break;
      }
  b1: argc--; argv++;
  }

  if (argc != 0)
    Usage();

  string reason;
  bool status = false;
  
  if (op_flags & OPT_a) {
      cmd = cmd0 + wt;
      status = editCrontab(marker, id, sched, cmd, reason);
  } else if (op_flags & OPT_d) {
      status = editCrontab(marker, id, sched, "", reason);
  } else if (op_flags & OPT_c) {
      if ((status = checkCrontabUnmanaged(marker, cmd))) {
	  cerr << "crontab has unmanaged lines for " << cmd << endl;
	  exit(1);
      }
      exit(0);
  } else {
      Usage();
  }
  if (!status) {
      cerr << "editCrontab failed: " << reason << endl;
      exit(1);
  }
  exit(0);
}
#endif // TEST