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/*
** ident-tester.c A small daemon that can be used to test Ident
** servers
**
** Author: Peter Eriksson <pen@lysator.liu.se>, 10 Aug 1992
*/
#ifdef NeXT3
# include <libc.h>
#endif
#include <stdio.h>
#include <netdb.h>
#include <errno.h>
#include <syslog.h>
#ifdef HAVE_ANSIHEADERS
# include <stdlib.h>
# include <unistd.h>
#endif
#include <sys/types.h>
#include <sys/socket.h>
#define IN_LIBIDENT_SRC
#include "ident.h"
#include <arpa/inet.h>
/*
** Return the name of the connecting host, or the IP number as a string.
*/
#ifdef INET6
char *gethost __P1(struct in6_addr *, addr)
{
static char str[512];
struct hostent *hp;
#ifndef linux
int h_error;
#endif
#ifdef linux
hp = gethostbyaddr((char *) addr, sizeof(struct in6_addr), AF_INET6);
#else
hp = getipnodebyaddr((char *) addr, sizeof(struct in6_addr), AF_INET6,
&h_error);
#endif
if (hp)
return (char *) hp->h_name;
else
return inet_ntop(AF_INET6, addr, str, sizeof str);
#else
char *gethost __P1(struct in_addr *, addr)
{
struct hostent *hp;
hp = gethostbyaddr((char *) addr, sizeof(struct in_addr), AF_INET);
if (hp)
return (char *) hp->h_name;
else
return inet_ntoa(*addr);
#endif
}
int
main __P2(int, argc,
char **, argv)
{
#ifdef INET6
char str[512];
struct sockaddr_in6 laddr, faddr;
#else
struct sockaddr_in laddr, faddr;
#endif
int len, res, lport, fport;
ident_t *id;
char *identifier, *opsys, *charset;
puts("Welcome to the IDENT server tester, version 1.9\r\n");
printf("(Linked with %s)\r\n\n", _id_version);
fflush(stdout);
len = sizeof(faddr);
getpeername(0, (struct sockaddr *) &faddr, &len);
len = sizeof(laddr);
getsockname(0, (struct sockaddr *) &laddr, &len);
#ifdef INET6
printf("Connecting to Ident server at %s...\r\n",
inet_ntop(AF_INET6, &faddr.sin6_addr, str, sizeof str));
#else
printf("Connecting to Ident server at %s...\r\n", inet_ntoa(faddr.sin_addr));
#endif
fflush(stdout);
#ifdef LOG_LOCAL3
openlog("tidentd", 0, LOG_LOCAL3);
#else
openlog("tidentd", 0);
#endif
#ifdef INET6
id = id_open(&laddr.sin6_addr, &faddr.sin6_addr, NULL);
#else
id = id_open(&laddr.sin_addr, &faddr.sin_addr, NULL);
#endif
if (!id)
{
if (errno)
{
int saved_errno = errno;
char *hs;
perror("Connection denied");
fflush(stderr);
#ifdef INET6
hs = gethost(&faddr.sin6_addr);
#else
hs = gethost(&faddr.sin_addr);
#endif
errno = saved_errno;
syslog(LOG_DEBUG, "Error: id_open(): host=%s, error=%m", hs);
}
else
puts("Connection denied.");
return 0;
}
printf("Querying for lport %d, fport %d....\r\n",
#ifdef INET6
(int) ntohs(faddr.sin6_port),
(int) ntohs(laddr.sin6_port));
#else
(int) ntohs(faddr.sin_port),
(int) ntohs(laddr.sin_port));
#endif
fflush(stdout);
errno = 0;
#ifdef INET6
if (id_query(id, ntohs(faddr.sin6_port), ntohs(laddr.sin6_port), 0) < 0)
#else
if (id_query(id, ntohs(faddr.sin_port), ntohs(laddr.sin_port), 0) < 0)
#endif
{
if (errno)
{
int saved_errno = errno;
char *hs;
perror("id_query()");
fflush(stderr);
#ifdef INET6
hs = gethost(&faddr.sin6_addr);
#else
hs = gethost(&faddr.sin_addr);
#endif
errno = saved_errno;
syslog(LOG_DEBUG, "Error: id_query(): host=%s, error=%m", hs);
}
else
{
puts("Query failed.\n");
}
return 0;
}
printf("Reading response data...\r\n");
fflush(stdout);
res = id_parse(id, NULL,
&lport, &fport,
&identifier,
&opsys,
&charset);
switch (res)
{
default:
if (errno)
{
int saved_errno = errno;
char *hs;
perror("id_parse()");
#ifdef INET6
hs = gethost(&faddr.sin6_addr);
#else
hs = gethost(&faddr.sin_addr);
#endif
errno = saved_errno;
syslog(LOG_DEBUG, "Error: id_parse(): host=%s, error=%m", hs);
}
else
puts("Error: Invalid response (empty response?).\n");
break;
case -2:
{
int saved_errno = errno;
#ifdef INET6
char *hs = gethost(&faddr.sin6_addr);
#else
char *hs = gethost(&faddr.sin_addr);
#endif
errno = saved_errno;
syslog(LOG_DEBUG, "Error: id_parse(): host=%s, Parse Error: %s",
hs,
identifier ? identifier : "<no information available>");
if (identifier)
printf("Parse error on reply:\n \"%s\"\n", identifier);
else
printf("Unidentifiable parse error on reply.\n");
}
break;
case -3:
{
int saved_errno = errno;
#ifdef INET6
char *hs = gethost(&faddr.sin6_addr);
#else
char *hs = gethost(&faddr.sin_addr);
#endif
errno = saved_errno;
syslog(LOG_DEBUG,
"Error: id_parse(): host=%s, Illegal reply type: %s",
hs,
identifier);
printf("Parse error in reply: Illegal reply type: %s\n",
identifier);
}
break;
case 0:
{
int saved_errno = errno;
#ifdef INET6
char *hs = gethost(&faddr.sin6_addr);
#else
char *hs = gethost(&faddr.sin_addr);
#endif
errno = saved_errno;
syslog(LOG_DEBUG, "Error: id_parse(): host=%s, NotReady",
hs);
puts("Not ready. This should not happen...\r");
}
break;
case 2:
{
int saved_errno = errno;
#ifdef INET6
char *hs = gethost(&faddr.sin6_addr);
#else
char *hs = gethost(&faddr.sin_addr);
#endif
errno = saved_errno;
syslog(LOG_DEBUG, "Reply: Error: host=%s, error=%s",
hs, identifier);
}
printf("Error response is:\r\n");
printf(" Lport........ %d\r\n", lport);
printf(" Fport........ %d\r\n", fport);
printf(" Error........ %s\r\n", identifier);
break;
case 1:
if (charset)
syslog(LOG_INFO,
"Reply: Userid: host=%s, opsys=%s, charset=%s, userid=%s",
#ifdef INET6
gethost(&faddr.sin6_addr), opsys, charset, identifier);
#else
gethost(&faddr.sin_addr), opsys, charset, identifier);
#endif
else
syslog(LOG_INFO, "Reply: Userid: host=%s, opsys=%s, userid=%s",
#ifdef INET6
gethost(&faddr.sin6_addr), opsys, identifier);
#else
gethost(&faddr.sin_addr), opsys, identifier);
#endif
printf("Userid response is:\r\n");
printf(" Lport........ %d\r\n", lport);
printf(" Fport........ %d\r\n", fport);
printf(" Opsys........ %s\r\n", opsys);
printf(" Charset...... %s\r\n", charset ? charset : "<not specified>");
printf(" Identifier... %s\r\n", identifier);
#ifdef INET6
if (id_query(id, ntohs(faddr.sin6_port), ntohs(laddr.sin6_port), 0) >= 0)
#else
if (id_query(id, ntohs(faddr.sin_port), ntohs(laddr.sin_port), 0) >= 0)
#endif
{
if (id_parse(id, NULL,
&lport, &fport,
&identifier,
&opsys,
&charset) == 1)
printf(" Multiquery... Enabled\r\n");
}
}
fflush(stdout);
sleep(1);
return 0;
}
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