1 /*- 2 * Copyright (c) 2009 Ed Schouten <ed@FreeBSD.org> 3 * 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include <sys/param.h> 31 #include <sys/time.h> 32 #include <paths.h> 33 #include <sha.h> 34 #include <string.h> 35 #include <unistd.h> 36 #include <utmpx.h> 37 #include "ulog.h" 38 39 static void 40 ulog_fill(struct utmpx *utx, const char *line) 41 { 42 SHA_CTX c; 43 char id[SHA_DIGEST_LENGTH]; 44 45 /* Remove /dev/ component. */ 46 if (strncmp(line, _PATH_DEV, sizeof _PATH_DEV - 1) == 0) 47 line += sizeof _PATH_DEV - 1; 48 49 memset(utx, 0, sizeof *utx); 50 51 utx->ut_pid = getpid(); 52 gettimeofday(&utx->ut_tv, NULL); 53 strncpy(utx->ut_line, line, sizeof utx->ut_line); 54 55 SHA1_Init(&c); 56 SHA1_Update(&c, "libulog", 7); 57 SHA1_Update(&c, utx->ut_line, sizeof utx->ut_line); 58 SHA_Final(id, &c); 59 60 memcpy(utx->ut_id, id, MIN(sizeof utx->ut_id, sizeof id)); 61 } 62 63 void 64 ulog_login(const char *line, const char *user, const char *host) 65 { 66 struct utmpx utx; 67 68 ulog_fill(&utx, line); 69 utx.ut_type = USER_PROCESS; 70 strncpy(utx.ut_user, user, sizeof utx.ut_user); 71 if (host != NULL) 72 strncpy(utx.ut_host, host, sizeof utx.ut_host); 73 pututxline(&utx); 74 } 75 76 void 77 ulog_logout(const char *line) 78 { 79 struct utmpx utx; 80 81 ulog_fill(&utx, line); 82 utx.ut_type = DEAD_PROCESS; 83 pututxline(&utx); 84 } 85