logwtmp.c revision 107030
11590Srgrimes/* 21590Srgrimes * Copyright (c) 1988, 1993 31590Srgrimes * The Regents of the University of California. All rights reserved. 41590Srgrimes * 51590Srgrimes * Redistribution and use in source and binary forms, with or without 61590Srgrimes * modification, are permitted provided that the following conditions 71590Srgrimes * are met: 81590Srgrimes * 1. Redistributions of source code must retain the above copyright 91590Srgrimes * notice, this list of conditions and the following disclaimer. 101590Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111590Srgrimes * notice, this list of conditions and the following disclaimer in the 121590Srgrimes * documentation and/or other materials provided with the distribution. 131590Srgrimes * 3. All advertising materials mentioning features or use of this software 141590Srgrimes * must display the following acknowledgement: 151590Srgrimes * This product includes software developed by the University of 161590Srgrimes * California, Berkeley and its contributors. 171590Srgrimes * 4. Neither the name of the University nor the names of its contributors 181590Srgrimes * may be used to endorse or promote products derived from this software 191590Srgrimes * without specific prior written permission. 201590Srgrimes * 211590Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221590Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231590Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241590Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251590Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261590Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271590Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281590Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291590Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301590Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311590Srgrimes * SUCH DAMAGE. 321590Srgrimes */ 331590Srgrimes 341590Srgrimes#ifndef lint 351590Srgrimes#if 0 361590Srgrimesstatic char sccsid[] = "@(#)logwtmp.c 8.1 (Berkeley) 6/4/93"; 371590Srgrimes#endif 381590Srgrimesstatic const char rcsid[] = 391590Srgrimes "$FreeBSD: head/libexec/ftpd/logwtmp.c 107030 2002-11-17 23:46:45Z peter $"; 401590Srgrimes#endif /* not lint */ 411590Srgrimes 421590Srgrimes#include <sys/types.h> 431590Srgrimes#include <sys/stat.h> 441590Srgrimes#include <netinet/in.h> 451590Srgrimes#include <arpa/inet.h> 461590Srgrimes#include <sys/socket.h> 471590Srgrimes 481590Srgrimes#include <fcntl.h> 491590Srgrimes#include <time.h> 501590Srgrimes#include <timeconv.h> 511590Srgrimes#include <netdb.h> 521590Srgrimes#include <utmp.h> 531590Srgrimes#include <unistd.h> 541590Srgrimes#include <stdio.h> 551590Srgrimes#include <string.h> 561590Srgrimes#include <libutil.h> 571590Srgrimes#include "extern.h" 581590Srgrimes 591590Srgrimesstatic int fd = -1; 601590Srgrimes 611590Srgrimes/* 621590Srgrimes * Modified version of logwtmp that holds wtmp file open 631590Srgrimes * after first call, for use with ftp (which may chroot 641590Srgrimes * after login, but before logout). 651590Srgrimes */ 661590Srgrimesvoid 671590Srgrimesftpd_logwtmp(line, name, addr) 681590Srgrimes char *line, *name; 691590Srgrimes struct sockaddr *addr; 701590Srgrimes{ 711590Srgrimes struct utmp ut; 721590Srgrimes struct stat buf; 731590Srgrimes char host[UT_HOSTSIZE]; 741590Srgrimes 751590Srgrimes if (addr == NULL) 761590Srgrimes host[0] = '\0'; 771590Srgrimes else 781590Srgrimes realhostname_sa(host, sizeof(host), addr, addr->sa_len); 791590Srgrimes 801590Srgrimes if (fd < 0 && (fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0) 811590Srgrimes return; 821590Srgrimes if (fstat(fd, &buf) == 0) { 831590Srgrimes (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line)); 841590Srgrimes (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name)); 851590Srgrimes (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host)); 861590Srgrimes ut.ut_time = _time_to_time32(time(NULL)); 871590Srgrimes if (write(fd, &ut, sizeof(struct utmp)) != 881590Srgrimes sizeof(struct utmp)) 891590Srgrimes (void)ftruncate(fd, buf.st_size); 901590Srgrimes } 911590Srgrimes} 921590Srgrimes