/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sal.hxx"

#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <pthread.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#ifndef NETBSD
#include <shadow.h>
#endif

/* exercises some reentrant libc-fucntions */

extern "C"
{
	struct tm *localtime_r(const time_t *timep, struct tm *buffer);
	struct passwd* getpwnam_r(char*, struct passwd*, char *, int); 
	struct spwd* getspnam_r(char*, struct spwd*, char *, int);
	struct hostent *gethostbyname_r(const char *name, struct hostent *result,
									char *buffer, int buflen, int *h_errnop);
}

static int go;


extern "C" void *workfunc1(void*)
{
	char buffer[256];
	struct tm		sttm;
	time_t			nepoch;
	struct passwd 	stpwd;
	struct hostent	sthostent;
	int 			nerr;

	printf("starting thread 1 ...\n");
	while (go) {
		getpwnam_r("hr", &stpwd, buffer, sizeof(buffer));
		gethostbyname_r("blauwal", &sthostent, buffer, sizeof(buffer), &nerr);
		time(&nepoch);
		localtime_r(&nepoch, &sttm);
	}
	return 0;
}
	
extern "C" void *workfunc2(void*)
{
	char buffer[256];
	struct tm		sttm;
	time_t			nepoch;
	struct passwd 	stpwd;
	struct hostent	sthostent;
	int 			nerr;

	printf("starting thread 2 ...\n");
	while(go) {
		getpwnam_r("mh", &stpwd, buffer, sizeof(buffer));
		gethostbyname_r("hr-1242", &sthostent, buffer, sizeof(buffer), &nerr);
		time(&nepoch);
		localtime_r(&nepoch, &sttm);
	}
	return 0;
}


extern int h_errno;

int main(int argc, char *argv[])
{
	char buffer[256];
	struct tm		*ptm;
	time_t			nepoch;
	struct passwd 	*pwd, *pres1;
#ifndef NETBSD	
	struct spwd 	*spwd, *pres2;
#endif
	struct hostent	*phostent, *pres3;
	char **p;

	pthread_t 		tid1,tid2;
	int 			res1,res2;
	
	go = 1;

	pthread_create(&tid1, NULL, workfunc1, &res1);
	pthread_create(&tid2, NULL, workfunc2, &res2);

	pwd = (struct passwd*)malloc(sizeof(struct passwd));

	pres1 = getpwnam_r("hr", pwd, buffer, sizeof(buffer));

	sleep(3);

	if (pres1) {
		printf("Name: %s\n", pwd->pw_name);
		printf("Passwd: %s\n", pwd->pw_passwd);
		printf("Uid: %d\n", pwd->pw_uid);
		printf("Gid: %d\n", pwd->pw_gid);
#ifdef NETBSD
		printf("Change: %s", ctime(&pwd->pw_change));
		printf("Class: %s\n", pwd->pw_class);
#else
		printf("Age: %s\n", pwd->pw_age);
		printf("Comment: %s\n", pwd->pw_comment);
#endif
		printf("Gecos: %s\n", pwd->pw_gecos);
		printf("Dir: %s\n", pwd->pw_dir);
		printf("Shell: %s\n", pwd->pw_shell);
	}
	else
		printf("getpwnam_r() failed!\n");

	free(pwd);

#ifndef NETBSD
	spwd = (struct spwd*)malloc(sizeof(struct spwd));
	
	pres2 = getspnam_r("hr", spwd, buffer, sizeof(buffer));

	if (pres2) {
		printf("Name: %s\n", spwd->sp_namp);
		printf("Passwd: %s\n", spwd->sp_pwdp);
		printf("Last Change: %ld\n", spwd->sp_lstchg);
		printf("Min: %ld\n", spwd->sp_min);
		printf("Max: %ld\n", spwd->sp_max);
	}
	else
		printf("getspnam_r() failed!\n");

	free(spwd);
#endif

	ptm = (struct tm*)malloc(sizeof(struct tm));

	time(&nepoch);
	localtime_r(&nepoch, ptm);

	printf("Seconds: %d\n", ptm->tm_sec); 
	printf("Minutes: %d\n", ptm->tm_min); 
	printf("Hour: %d\n", ptm->tm_hour); 
	printf("Day of Month: %d\n", ptm->tm_mday); 
	printf("Month: %d\n", ptm->tm_mon); 
	printf("Year: %d\n", ptm->tm_year); 
	printf("Day of week: %d\n", ptm->tm_wday); 
	printf("Day in the year: %d\n", ptm->tm_yday); 
	printf("Daylight saving time: %d\n", ptm->tm_isdst);
#ifdef NETBSD	
	printf("Timezone: %s\n", ptm->tm_zone);
#else
	printf("Timezone: %s\n", ptm->tm_name);
#endif

	free(ptm);

	phostent = (struct hostent*)malloc(sizeof(struct hostent));

	pres3 = gethostbyname_r("blauwal", phostent, buffer, sizeof(buffer), h_errno);

	if (pres3) {
		printf("Official Hostname: %s\n", phostent->h_name);
		for ( p = phostent->h_aliases; *p != NULL; p++ )
			printf("Alias: %s\n", *p);
		printf("Addresstype: %d\n", phostent->h_addrtype);
		printf("Address length: %d\n", phostent->h_length);
		if ( phostent->h_addrtype == AF_INET ) {
			for ( p = phostent->h_addr_list; *p != NULL; *p++ )
				printf("Address: %s\n", inet_ntoa(**((in_addr**)p)));
		}
	}
	

	/* test boundary conditions */
	char smallbuf[23]; /* buffer to small */
	pres3 = gethostbyname_r("blauwal", phostent, smallbuf, sizeof(smallbuf), h_errno);
	if (!pres3) {
		perror("Expect ERANGE");
	}
	else
	{
		printf("ERROR: Check for buffersize went wrong\n");
	}

#ifdef NETBSD
	char exactbuf[35];
#else
	char exactbuf[24]; /* should be exact the necessary size */
#endif
	pres3 = gethostbyname_r("blauwal", phostent, exactbuf, sizeof(exactbuf), &h_errno);
	if (!pres3) {
		perror("Check with exact buffersize");
	}
	else
	{
		printf("Boundary check ok\n");
	}

	/* test error conditions */
	pres3 = gethostbyname_r("nohost", phostent, buffer, sizeof(buffer), &h_errno);
	if (!pres3) {
		herror("Expect HOST_NOT_FOUND");
	}
	else 
	{
		printf("failed to detect non existant host\n");
	} 

	free(phostent);
	go = 0; /* atomic enough for our purposes */

	pthread_join(tid1, NULL);
	pthread_join(tid2, NULL);

	exit(0);
}