/*
 * Copyright (c) 2000 Andre Lucas.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Markus Friedl.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */

/** 
 ** logintest.c:  simple test driver for platform-independent login recording
 **               and lastlog retrieval
 **/

#include "config.h"

#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <pwd.h>
#include <netdb.h>
#ifdef HAVE_TIME_H
#include <time.h>
#endif

#include "loginrec.h"

RCSID("$Id: logintest.c,v 1.3 2000/06/12 23:40:52 andre Exp $");


int nologtest = 0;
int compile_opts_only = 0;
int be_verbose = 0;


/* Dump a logininfo to stdout. Assumes a tab size of 8 chars. */
void dump_logininfo(struct logininfo *li, char *descname)
{
  /* yes I know how nasty this is */
  printf("struct logininfo %s = {\n\t"
	 "progname\t'%s'\n\ttype\t\t%d\n\t"
	 "pid\t\t%d\n\tuid\t\t%d\n\t"
	 "line\t\t'%s'\n\tusername\t'%s'\n\t"
	 "hostname\t'%s'\n\texit\t\t%d\n\ttermination\t%d\n\t"
	 "tv_sec\t%d\n\ttv_usec\t%d\n\t"
	 "struct login_netinfo hostaddr {\n\t\t"
	 "struct sockaddr sa {\n"
	 "\t\t\tfamily\t%d\n\t\t}\n"
	 "\t\t** !!! IP6 stuff not supported yet **\n"
	 "\t}\n"
	 "}\n",
	 descname, li->progname, li->type, 
	 li->pid, li->uid, li->line,
	 li->username, li->hostname, li->exit, 
	 li->termination, li->tv_sec, li->tv_usec, 
	 li->hostaddr.sa.sa_family);
}


int testAPI()
{
  struct logininfo *li1;
  struct passwd *pw;
  struct hostent *he;
  struct sockaddr_in sa_in4;
  char cmdstring[256], stripline[8];
  char username[32];
#ifdef HAVE_TIME_H
  time_t t0, t1, t2;
  char s_t0[64],s_t1[64],s_t2[64]; /* ctime() strings */
#endif

  printf("**\n** Testing the API...\n**\n");

  pw = getpwuid(getuid());
  strlcpy(username, pw->pw_name, sizeof(username));

  /* gethostname(hostname, sizeof(hostname)); */

  printf("login_alloc_entry test (no host info):\n");
  /* !!! fake tty more effectively */
  li1 = login_alloc_entry((int)getpid(), username, NULL, ttyname(0));
  strlcpy(li1->progname, "OpenSSH-logintest", sizeof(li1->progname));

  if (be_verbose)
    dump_logininfo(li1, "li1");

  printf("Setting host address info for 'localhost' (may call out):\n");
  if (! (he = gethostbyname("localhost"))) {
    printf("Couldn't set hostname(lookup failed)\n");
  } else {
    /* NOTE: this is messy, but typically a program wouldn't have to set
     *  any of this, a sockaddr_in* would be already prepared */
    memcpy((void *)&(sa_in4.sin_addr), (void *)&(he->h_addr_list[0][0]),
	   sizeof(struct in_addr));
    login_set_addr(li1, (struct sockaddr *) &sa_in4, sizeof(sa_in4));
    strlcpy(li1->hostname, "localhost", sizeof(li1->hostname));
  }
  if (be_verbose)
    dump_logininfo(li1, "li1");

  if ((int)geteuid() != 0) {
    printf("NOT RUNNING LOGIN TESTS - you are not root!\n");
    return 1; /* this isn't necessarily an error */
  }

  if (nologtest)
    return 1;
  
  line_stripname(stripline, li1->line, sizeof(stripline));

  printf("Performing an invalid login attempt (no type field)\n--\n");
  login_write(li1);
  printf("--\n(Should have written an error to stderr)\n");

#ifdef HAVE_TIME_H
  (void)time(&t0);
  strlcpy(s_t0, ctime(&t0), sizeof(s_t0));
  t1 = login_get_lastlog_time(getuid());
  strlcpy(s_t1, ctime(&t1), sizeof(s_t1));
  printf("Before logging in:\n\tcurrent time is %d - %s\t"
	 "lastlog time is %d - %s\n",
	 (int)t0, s_t0, (int)t1, s_t1);
#endif

  printf("Performing a login on line %s...\n--\n", stripline);
  login_login(li1);
  
  snprintf(cmdstring, sizeof(cmdstring), "who | grep '%s '",
	   stripline);
  system(cmdstring);
  
  printf("--\nWaiting for a few seconds...\n");
  sleep(2);

  printf("Performing a logout (the root login "
	 "shown above should be gone)\n"
	 "If the root login hasn't gone, but another user on the same\n"
	 "pty has, this is OK - we're hacking it here, and there\n"
	 "shouldn't be two users on one pty in reality...\n"
	 "-- ('who' output follows)\n");
  login_logout(li1);

  system(cmdstring);
  printf("-- ('who' output ends)\n");

#ifdef HAVE_TIME_H
  t2 = login_get_lastlog_time(getuid());
  strlcpy(s_t2, ctime(&t2), sizeof(s_t2));
  printf("After logging in, lastlog time is %d - %s\n", (int)t2, s_t2);
  if (t1 == t2)
    printf("The lastlog times before and after logging in are the "
	   "same.\nThis indicates that lastlog is ** NOT WORKING "
	   "CORRECTLY **\n");
  else if ( abs(t2-t0) >2 )  /* allow a small tolerance for slow systems */
    printf("** The login time and the lastlog time differ.\n"
	   "** This indicates that lastlog is either recording the "
	   "wrong time,\n** or retrieving the wrong entry.\n");
  else
    printf("lastlog seems to agree with the login time. This is a good thing.\n");

#endif

  printf("--\nThe output of 'last' shown next should have "
	 "an entry for root \n  on %s for the time shown above:\n--\n", 
	 stripline);
  snprintf(cmdstring, sizeof(cmdstring), "last | grep '%s ' | head -3",
	   stripline);
  system(cmdstring);
	     
  printf("--\nEnd of login test.\n");

  login_free_entry(li1);

  return 1;
} /* testAPI() */


void testLineName(char *line)
{
  /* have to null-terminate - these functions are designed for
   * structures with fixed-length char arrays, and don't null-term.*/
  char full[17], strip[9], abbrev[5];

  memset(full, '\0', sizeof(full));
  memset(strip, '\0', sizeof(strip));
  memset(abbrev, '\0', sizeof(abbrev));

  line_fullname(full, line, sizeof(full)-1);
  line_stripname(strip, full, sizeof(strip)-1);
  line_abbrevname(abbrev, full, sizeof(abbrev)-1);
  printf("%s: %s, %s, %s\n", line, full, strip, abbrev);

} /* testLineName() */


int testOutput() {
  printf("**\n** Testing linename functions\n**\n");
  testLineName("/dev/pts/1");
  testLineName("pts/1");
  testLineName("pts/999");
  testLineName("/dev/ttyp00");
  testLineName("ttyp00");

  return 1;
} /* testOutput() */


/* show which options got compiled in */
void showOptions(void)
{  
  printf("**\n** Compile-time options\n**\n");
  
  printf("login recording methods selected:\n");
#ifdef USE_LOGIN
  printf("\tUSE_LOGIN\n");
#endif
#ifdef USE_UTMP
  printf("\tUSE_UTMP (UTMP_FILE=%s)\n", UTMP_FILE);
#endif
#ifdef USE_UTMPX
  printf("\tUSE_UTMPX (UTMPX_FILE=%s)\n", UTMPX_FILE);
#endif
#ifdef USE_WTMP
  printf("\tUSE_WTMP (WTMP_FILE=%s)\n", WTMP_FILE);
#endif
#ifdef USE_WTMPX
  printf("\tUSE_WTMPX (WTMPX_FILE=%s)\n", WTMPX_FILE);
#endif
#ifdef USE_LASTLOG
  printf("\tUSE_LASTLOG (LASTLOG_FILE=%s)\n", LASTLOG_FILE);
#endif
  printf("\n");

} /* showOptions() */


int main(int argc, char *argv[])
{
  printf("Platform-independent login recording test driver\n");

  if (argc == 2) {
    if (strncmp(argv[1], "-i", 3) == 0)
      compile_opts_only = 1;
    else if (strncmp(argv[1], "-v", 3) == 0)
      be_verbose=1;
  }
      
  if (!compile_opts_only) {
    if (be_verbose && !testOutput())
      return 1;
    
    if (!testAPI())
      return 1;
  }

  showOptions();
  
  return 0;
} /* main() */