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/* id_query.c,v 1.7 2004/06/17 01:27:40 eagle Exp
**
** Low-level call to transmit a query to an ident server.
**
** Written by Peter Eriksson <pen@lysator.liu.se>
*/
#include "config.h"
#include <errno.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#ifdef HAVE_SYS_SELECT_H
# include <sys/select.h>
#endif
#include "sident.h"
/*
** Sends off a query to a remote ident server. resp_port and req_port are
** sent to the server to identify the connection for which identification is
** needed. timeout is given as for id_open. auth_data specifies the
** authentication protocol to use.
**
** Returns the number of bytes sent to the remote server on success, -1 onq
** failure. On failure, errno is set.
*/
int
id_query(ident_t *id, int resp_port, int req_port, struct timeval *timeout,
struct ident_auth_client_data *auth_data)
{
RETSIGTYPE (*old_sig)(int);
int res;
char buf[IDENT_BUFFER_SIZE];
fd_set ws;
if (auth_data != NULL) {
char *start_data;
auth_data->requester_port = req_port;
auth_data->responder_port = resp_port;
auth_data->fd = id->fd;
auth_data->timeout = timeout;
start_data = (*auth_data->auth_struct->start)(auth_data);
if (start_data == NULL) {
errno = EINVAL; /* Arbitrary */
return -1;
}
sprintf(buf, "%d , %d : AUTHENTICATE : %s\r\n", resp_port, req_port,
start_data);
} else
sprintf(buf, "%d , %d\r\n", resp_port, req_port);
#ifdef DEBUG
printf("Sending.. \n%s",buf) ;
#endif
if (timeout) {
FD_ZERO(&ws);
FD_SET(id->fd, &ws);
res = select(FD_SETSIZE, NULL, &ws, NULL, timeout);
if (res < 0)
return -1;
else if (res == 0) {
errno = ETIMEDOUT;
return -1;
}
}
old_sig = signal(SIGPIPE, SIG_IGN);
res = write(id->fd, buf, strlen(buf));
signal(SIGPIPE, old_sig);
return res;
}
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