1 /* 2 * Copyright (c) 1995, 1996, 1997, 1999 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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 #include "login_locl.h" 35 36 RCSID("$Id: utmp_login.c,v 1.17 1999/12/02 17:04:56 joda Exp $"); 37 38 void 39 prepare_utmp (struct utmp *utmp, char *tty, 40 const char *username, const char *hostname) 41 { 42 char *ttyx = clean_ttyname (tty); 43 44 memset(utmp, 0, sizeof(*utmp)); 45 utmp->ut_time = time(NULL); 46 strncpy(utmp->ut_line, ttyx, sizeof(utmp->ut_line)); 47 strncpy(utmp->ut_name, username, sizeof(utmp->ut_name)); 48 49 # ifdef HAVE_STRUCT_UTMP_UT_USER 50 strncpy(utmp->ut_user, username, sizeof(utmp->ut_user)); 51 # endif 52 53 # ifdef HAVE_STRUCT_UTMP_UT_ADDR 54 if (hostname[0]) { 55 struct hostent *he; 56 if ((he = gethostbyname(hostname))) 57 memcpy(&utmp->ut_addr, he->h_addr_list[0], 58 sizeof(utmp->ut_addr)); 59 } 60 # endif 61 62 # ifdef HAVE_STRUCT_UTMP_UT_HOST 63 strncpy(utmp->ut_host, hostname, sizeof(utmp->ut_host)); 64 # endif 65 66 # ifdef HAVE_STRUCT_UTMP_UT_TYPE 67 utmp->ut_type = USER_PROCESS; 68 # endif 69 70 # ifdef HAVE_STRUCT_UTMP_UT_PID 71 utmp->ut_pid = getpid(); 72 # endif 73 74 # ifdef HAVE_STRUCT_UTMP_UT_ID 75 strncpy(utmp->ut_id, make_id(ttyx), sizeof(utmp->ut_id)); 76 # endif 77 } 78 79 #ifdef HAVE_UTMPX_H 80 void utmp_login(char *tty, const char *username, const char *hostname) 81 { 82 return; 83 } 84 #else 85 86 /* update utmp and wtmp - the BSD way */ 87 88 void utmp_login(char *tty, const char *username, const char *hostname) 89 { 90 struct utmp utmp; 91 int fd; 92 93 prepare_utmp (&utmp, tty, username, hostname); 94 95 #ifdef HAVE_SETUTENT 96 utmpname(_PATH_UTMP); 97 setutent(); 98 pututline(&utmp); 99 endutent(); 100 #else 101 102 #ifdef HAVE_TTYSLOT 103 { 104 int ttyno; 105 ttyno = ttyslot(); 106 if (ttyno > 0 && (fd = open(_PATH_UTMP, O_WRONLY, 0)) >= 0) { 107 lseek(fd, (long)(ttyno * sizeof(struct utmp)), SEEK_SET); 108 write(fd, &utmp, sizeof(struct utmp)); 109 close(fd); 110 } 111 } 112 #endif /* HAVE_TTYSLOT */ 113 #endif /* HAVE_SETUTENT */ 114 115 if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) >= 0) { 116 write(fd, &utmp, sizeof(struct utmp)); 117 close(fd); 118 } 119 } 120 #endif /* !HAVE_UTMPX_H */ 121