/* * Copyright (c) 1988, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint #if 0 static char sccsid[] = "@(#)logwtmp.c 8.1 (Berkeley) 6/4/93"; #endif static const char rcsid[] = "$FreeBSD: src/libexec/ftpd/logwtmp.c,v 1.9 2000/01/27 09:28:21 shin Exp $"; #endif /* not lint */ #include <sys/types.h> #include <sys/stat.h> #include <netinet/in.h> #include <arpa/inet.h> #include <sys/socket.h> #include <fcntl.h> #include <time.h> #include <netdb.h> #include <utmp.h> #include <unistd.h> #include <stdio.h> #include <string.h> #include "extern.h" static int fd = -1; /* * Modified version of logwtmp that holds wtmp file open * after first call, for use with ftp (which may chroot * after login, but before logout). */ void ftpd_logwtmp(line, name, host) char *line, *name, *host; { struct utmp ut; struct stat buf; #if defined(HAVE_GETNAMEINFO) if (strlen(host) > UT_HOSTSIZE) { struct addrinfo hints, *res; int error; static char hostbuf[BUFSIZ]; memset(&hints, 0, sizeof(hints)); hints.ai_family = PF_UNSPEC; error = getaddrinfo(host, NULL, &hints, &res); if (error) host = "invalid hostname"; else { getnameinfo(res->ai_addr, res->ai_addrlen, hostbuf, sizeof(hostbuf), NULL, 0, NI_NUMERICHOST); host = hostbuf; if (strlen(host) > UT_HOSTSIZE) host[UT_HOSTSIZE] = '\0'; } } #else if (strlen(host) > UT_HOSTSIZE) { struct hostent *hp = gethostbyname(host); if (hp != NULL) { struct in_addr in; memmove(&in, hp->h_addr, sizeof(in)); host = inet_ntoa(in); } else host = "invalid hostname"; } #endif if (fd < 0 && (fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0) return; if (fstat(fd, &buf) == 0) { (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line)); (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name)); (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host)); (void)time(&ut.ut_time); if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp)) (void)ftruncate(fd, buf.st_size); } }