1 /*- 2 * Copyright (C) 1996 3 * David L. Nugent. 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 DAVID L. NUGENT 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 DAVID L. NUGENT 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 #ifndef lint 28 static const char rcsid[] = 29 "$FreeBSD$"; 30 #endif /* not lint */ 31 32 #include <fcntl.h> 33 34 #include "pw.h" 35 36 static FILE *logfile = NULL; 37 38 void 39 pw_log(struct userconf * cnf, int mode, int which, char const * fmt,...) 40 { 41 if (cnf->logfile && *cnf->logfile) { 42 if (logfile == NULL) { /* With umask==0 we need to control file access modes on create */ 43 int fd = open(cnf->logfile, O_WRONLY | O_CREAT | O_APPEND, 0600); 44 45 if (fd != -1) 46 logfile = fdopen(fd, "a"); 47 } 48 if (logfile != NULL) { 49 va_list argp; 50 int l; 51 time_t now = time(NULL); 52 struct tm *t = localtime(&now); 53 char nfmt[256]; 54 char *name; 55 56 if ((name = getenv("LOGNAME")) == NULL && (name = getenv("USER")) == NULL) 57 name = "unknown"; 58 /* ISO 8601 International Standard Date format */ 59 strftime(nfmt, sizeof nfmt, "%Y-%m-%d %T ", t); 60 l = strlen(nfmt); 61 sprintf(nfmt + strlen(nfmt), "[%s:%s%s] %s\n", name, Which[which], Modes[mode], fmt); 62 va_start(argp, fmt); 63 vfprintf(logfile, nfmt, argp); 64 va_end(argp); 65 fflush(logfile); 66 } 67 } 68 } 69