1 /* 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)logwtmp.c 8.1 (Berkeley) 6/4/93"; 37 #endif 38 #endif /* not lint */ 39 40 #include <sys/cdefs.h> 41 __FBSDID("$FreeBSD$"); 42 43 #include <sys/types.h> 44 #include <sys/stat.h> 45 #include <netinet/in.h> 46 #include <arpa/inet.h> 47 #include <sys/socket.h> 48 49 #include <fcntl.h> 50 #include <time.h> 51 #include <timeconv.h> 52 #include <netdb.h> 53 #include <utmp.h> 54 #include <unistd.h> 55 #include <stdio.h> 56 #include <string.h> 57 #include <libutil.h> 58 #include "extern.h" 59 60 static int fd = -1; 61 62 /* 63 * Modified version of logwtmp that holds wtmp file open 64 * after first call, for use with ftp (which may chroot 65 * after login, but before logout). 66 */ 67 void 68 ftpd_logwtmp(line, name, addr) 69 char *line, *name; 70 struct sockaddr *addr; 71 { 72 struct utmp ut; 73 struct stat buf; 74 char host[UT_HOSTSIZE]; 75 76 if (addr == NULL) 77 host[0] = '\0'; 78 else 79 realhostname_sa(host, sizeof(host), addr, addr->sa_len); 80 81 if (fd < 0 && (fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) < 0) 82 return; 83 if (fstat(fd, &buf) == 0) { 84 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line)); 85 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name)); 86 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host)); 87 ut.ut_time = _time_to_time32(time(NULL)); 88 if (write(fd, &ut, sizeof(struct utmp)) != 89 sizeof(struct utmp)) 90 (void)ftruncate(fd, buf.st_size); 91 } 92 } 93