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/* simple identd server for HexChat under Win32 */
#include "inet.h"
#include "hexchat.h"
#include "hexchatc.h"
#include "text.h"
static int identd_is_running = FALSE;
#ifdef USE_IPV6
static int identd_ipv6_is_running = FALSE;
#endif
static int
identd (char *username)
{
int sok, read_sok, len;
char *p;
char buf[256];
char outbuf[256];
struct sockaddr_in addr;
sok = socket (AF_INET, SOCK_STREAM, 0);
if (sok == INVALID_SOCKET)
{
free (username);
return 0;
}
len = 1;
setsockopt (sok, SOL_SOCKET, SO_REUSEADDR, (char *) &len, sizeof (len));
memset (&addr, 0, sizeof (addr));
addr.sin_family = AF_INET;
addr.sin_port = htons (113);
if (bind (sok, (struct sockaddr *) &addr, sizeof (addr)) == SOCKET_ERROR)
{
closesocket (sok);
free (username);
return 0;
}
if (listen (sok, 1) == SOCKET_ERROR)
{
closesocket (sok);
free (username);
return 0;
}
len = sizeof (addr);
read_sok = accept (sok, (struct sockaddr *) &addr, &len);
closesocket (sok);
if (read_sok == INVALID_SOCKET)
{
free (username);
return 0;
}
identd_is_running = FALSE;
#if 0 /* causes random crashes, probably due to CreateThread */
EMIT_SIGNAL (XP_TE_IDENTD, current_sess, inet_ntoa (addr.sin_addr), username, NULL, NULL, 0);
#endif
snprintf (outbuf, sizeof (outbuf), "*\tServicing ident request from %s as %s\n", inet_ntoa (addr.sin_addr), username);
PrintText (current_sess, outbuf);
recv (read_sok, buf, sizeof (buf) - 1, 0);
buf[sizeof (buf) - 1] = 0; /* ensure null termination */
p = strchr (buf, ',');
if (p)
{
snprintf (outbuf, sizeof (outbuf) - 1, "%d, %d : USERID : UNIX : %s\r\n",
atoi (buf), atoi (p + 1), username);
outbuf[sizeof (outbuf) - 1] = 0; /* ensure null termination */
send (read_sok, outbuf, strlen (outbuf), 0);
}
sleep (1);
closesocket (read_sok);
free (username);
return 0;
}
#ifdef USE_IPV6
#define IPV6BUFLEN 60
static int
identd_ipv6 (char *username)
{
int sok, read_sok, len;
char *p;
char buf[256];
char outbuf[256];
LPSTR ipv6buf = (LPSTR) malloc (IPV6BUFLEN);
struct sockaddr_in6 addr;
sok = socket (AF_INET6, SOCK_STREAM, 0);
if (sok == INVALID_SOCKET)
{
free (username);
free (ipv6buf);
return 0;
}
len = 1;
setsockopt (sok, SOL_SOCKET, SO_REUSEADDR, (char *) &len, sizeof (len));
memset (&addr, 0, sizeof (addr));
addr.sin6_family = AF_INET6;
addr.sin6_port = htons (113);
if (bind (sok, (struct sockaddr *) &addr, sizeof (addr)) == SOCKET_ERROR)
{
closesocket (sok);
free (username);
free (ipv6buf);
return 0;
}
if (listen (sok, 1) == SOCKET_ERROR)
{
closesocket (sok);
free (username);
free (ipv6buf);
return 0;
}
len = sizeof (addr);
read_sok = accept (sok, (struct sockaddr *) &addr, &len);
closesocket (sok);
if (read_sok == INVALID_SOCKET)
{
free (username);
free (ipv6buf);
return 0;
}
identd_ipv6_is_running = FALSE;
if (WSAAddressToString ((struct sockaddr *) &addr, sizeof (addr), NULL, ipv6buf, (LPDWORD) IPV6BUFLEN) == SOCKET_ERROR)
{
snprintf (ipv6buf, sizeof (ipv6buf) - 1, "[SOCKET ERROR: 0x%X]", WSAGetLastError ());
}
#if 0 /* causes random crashes, probably due to CreateThread */
EMIT_SIGNAL (XP_TE_IDENTD, current_sess, ipv6buf, username, NULL, NULL, 0);
#endif
snprintf (outbuf, sizeof (outbuf), "*\tServicing ident request from %s as %s\n", ipv6buf, username);
PrintText (current_sess, outbuf);
recv (read_sok, buf, sizeof (buf) - 1, 0);
buf[sizeof (buf) - 1] = 0; /* ensure null termination */
p = strchr (buf, ',');
if (p)
{
snprintf (outbuf, sizeof (outbuf) - 1, "%d, %d : USERID : UNIX : %s\r\n", atoi (buf), atoi (p + 1), username);
outbuf[sizeof (outbuf) - 1] = 0; /* ensure null termination */
send (read_sok, outbuf, strlen (outbuf), 0);
}
sleep (1);
closesocket (read_sok);
free (username);
free (ipv6buf);
return 0;
}
#endif
void
identd_start (char *username)
{
DWORD tid;
#ifdef USE_IPV6
DWORD tidv6;
if (identd_ipv6_is_running == FALSE)
{
identd_ipv6_is_running = TRUE;
CloseHandle (CreateThread (NULL, 0, (LPTHREAD_START_ROUTINE) identd_ipv6,
strdup (username), 0, &tidv6));
}
#endif
if (identd_is_running == FALSE)
{
identd_is_running = TRUE;
CloseHandle (CreateThread (NULL, 0, (LPTHREAD_START_ROUTINE) identd,
strdup (username), 0, &tid));
}
}
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