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1de7b4b805
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
121 lines
3.4 KiB
C
121 lines
3.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (C) 1996
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* David L. Nugent. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <ctype.h>
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#include <err.h>
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#include <fcntl.h>
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#include <string.h>
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#include <stdarg.h>
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#include "pw.h"
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static FILE *logfile = NULL;
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void
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pw_log(struct userconf * cnf, int mode, int which, char const * fmt,...)
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{
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va_list argp;
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time_t now;
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const char *cp, *name;
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struct tm *t;
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int fd, i, rlen;
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char nfmt[256], sname[32];
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if (cnf->logfile == NULL || cnf->logfile[0] == '\0') {
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return;
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}
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if (logfile == NULL) {
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/* With umask==0 we need to control file access modes on create */
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fd = open(cnf->logfile, O_WRONLY | O_CREAT | O_APPEND, 0600);
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if (fd == -1) {
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return;
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}
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logfile = fdopen(fd, "a");
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if (logfile == NULL) {
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return;
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}
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}
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if ((name = getenv("LOGNAME")) == NULL &&
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(name = getenv("USER")) == NULL) {
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strcpy(sname, "unknown");
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} else {
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/*
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* Since "name" will be embedded in a printf-like format,
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* we must sanitize it:
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*
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* Limit its length so other information in the message
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* is not truncated
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*
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* Squeeze out embedded whitespace for the benefit of
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* log file parsers
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*
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* Escape embedded % characters with another %
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*/
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for (i = 0, cp = name;
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*cp != '\0' && i < (int)sizeof(sname) - 1; cp++) {
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if (*cp == '%') {
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if (i < (int)sizeof(sname) - 2) {
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sname[i++] = '%';
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sname[i++] = '%';
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} else {
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break;
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}
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} else if (!isspace(*cp)) {
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sname[i++] = *cp;
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} /* else do nothing */
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}
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if (i == 0) {
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strcpy(sname, "unknown");
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} else {
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sname[i] = '\0';
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}
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}
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now = time(NULL);
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t = localtime(&now);
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/* ISO 8601 International Standard Date format */
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strftime(nfmt, sizeof nfmt, "%Y-%m-%d %T ", t);
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rlen = sizeof(nfmt) - strlen(nfmt);
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if (rlen <= 0 || snprintf(nfmt + strlen(nfmt), rlen,
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"[%s:%s%s] %s\n", sname, Which[which], Modes[mode],
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fmt) >= rlen) {
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warnx("log format overflow, user name=%s", sname);
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} else {
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va_start(argp, fmt);
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vfprintf(logfile, nfmt, argp);
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va_end(argp);
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fflush(logfile);
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}
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}
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