/*

  *  Copyright (C) 2007-2009 Sourcefire, Inc.
  *
  *  Authors: Tomasz Kojm

  *
  *  This program is free software; you can redistribute it and/or modify

  *  it under the terms of the GNU General Public License version 2 as
  *  published by the Free Software Foundation.

  *
  *  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.

  *
  */
 

 #if HAVE_CONFIG_H
 #include "clamav-config.h"
 #endif
 

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

 #include <string.h>

 #include <ctype.h>

 #ifdef HAVE_UNISTD_H

 #include <unistd.h>

 #endif

 #include <errno.h>

 #ifdef HAVE_PWD_H

 #include <pwd.h>

 #endif

 #include <sys/types.h>
 #include <sys/stat.h>

 #ifndef _WIN32

 #include <sys/wait.h>
 #include <sys/time.h>

 #endif

 #include <time.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <target.h>
 

 #include "shared/output.h"

 #include "others.h"

 
 int fileinfo(const char *filename, short i)
 {
 	struct stat infostruct;
 
     if(stat(filename, &infostruct) == -1)
 	return(-1);
 
     switch(i) {
 
 	case 1: /* size */
 	    return infostruct.st_size;
 	case 2: /* permissions */
 	    return (mode_t)infostruct.st_mode;
 	case 3: /* modification time */
 	    return infostruct.st_mtime;
 	case 4: /* UID */
 	    return infostruct.st_uid;
 	case 5: /* GID */
 	    return infostruct.st_gid;
 	default:

 	    logg("!fileinfo(): Unknown option.\n");

 	    exit(1);
     }
 }
 

 #ifdef _WIN32

 /* FIXME: Handle users correctly */
 int checkaccess(const char *path, const char *username, int mode)
 {

     return !_access(path, mode);

 }
 #else

 int checkaccess(const char *path, const char *username, int mode)

 {
 	struct passwd *user;

 	int ret = 0, status;

     if(!geteuid()) {

 
 	if((user = getpwnam(username)) == NULL) {
 	    return -1;
 	}
 

 	switch(fork()) {
 	    case -1:
 		return -2;
 
 	    case 0:

 		if(setgid(user->pw_gid)) {
 		    fprintf(stderr, "ERROR: setgid(%d) failed.\n", (int) user->pw_gid);
 		    exit(0);
 		}
 
 		if(setuid(user->pw_uid)) {
 		    fprintf(stderr, "ERROR: setuid(%d) failed.\n", (int) user->pw_uid);
 		    exit(0);
 		}
 

 		if(access(path, mode))
 		    exit(0);
 		else
 		    exit(1);
 
 	    default:
 		wait(&status);
 		if(WIFEXITED(status) && WEXITSTATUS(status) == 1)
 		    ret = 1;

 	}
 

     } else {
 	if(!access(path, mode))
 	    ret = 1;

     }
 

     return ret;

 }

 #endif