hush/sysklogd/logger.c

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/* vi: set sw=4 ts=4: */
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/*
* Mini logger implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
#include "libbb.h"
#ifndef CONFIG_SYSLOGD
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#define SYSLOG_NAMES
#define SYSLOG_NAMES_CONST
#include <syslog.h>
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#else
/* brokenness alert. Everybody except dietlibc get's this wrong by neither
* providing a typedef nor an extern for facilitynames and prioritynames
* in syslog.h.
*/
# include <syslog.h>
# ifndef __dietlibc__
/* We have to do this since the header file does neither provide a sane type
* for this structure nor extern definitions. Argh.... bad libc, bad, bad...
*/
typedef struct _code {
char *c_name; /* FIXME: this should be const char *const c_name ! */
int c_val;
} CODE;
# ifdef __UCLIBC__
extern const CODE prioritynames[];
extern const CODE facilitynames[];
# else
extern CODE prioritynames[];
extern CODE facilitynames[];
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# endif
# endif
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#endif
/* Decode a symbolic name to a numeric value
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* this function is based on code
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Original copyright notice is retained at the end of this file.
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*/
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static int decode(char *name, const CODE *codetab)
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{
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const CODE *c;
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if (isdigit(*name))
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return atoi(name);
for (c = codetab; c->c_name; c++) {
if (!strcasecmp(name, c->c_name)) {
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return c->c_val;
}
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}
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return -1;
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}
/* Decode a symbolic name to a numeric value
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* this function is based on code
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* Original copyright notice is retained at the end of this file.
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*/
static int pencode(char *s)
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{
char *save;
int lev, fac = LOG_USER;
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for (save = s; *s && *s != '.'; ++s)
;
if (*s) {
*s = '\0';
fac = decode(save, facilitynames);
if (fac < 0)
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bb_error_msg_and_die("unknown %s name: %s", "facility", save);
*s++ = '.';
} else {
s = save;
}
lev = decode(s, prioritynames);
if (lev < 0)
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bb_error_msg_and_die("unknown %s name: %s", "priority", save);
return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
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}
int logger_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int logger_main(int argc, char **argv)
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{
char *str_p, *str_t;
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int i = 0;
char name[80];
/* Fill out the name string early (may be overwritten later) */
bb_getpwuid(name, sizeof(name), geteuid());
str_t = name;
/* Parse any options */
getopt32(argv, "p:st:", &str_p, &str_t);
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if (option_mask32 & 0x2) /* -s */
i |= LOG_PERROR;
//if (option_mask32 & 0x4) /* -t */
openlog(str_t, i, 0);
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i = LOG_USER | LOG_NOTICE;
if (option_mask32 & 0x1) /* -p */
i = pencode(str_p);
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argc -= optind;
argv += optind;
if (!argc) {
#define strbuf bb_common_bufsiz1
while (fgets(strbuf, COMMON_BUFSIZE, stdin)) {
if (strbuf[0]
&& NOT_LONE_CHAR(strbuf, '\n')
) {
/* Neither "" nor "\n" */
syslog(i, "%s", strbuf);
}
}
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} else {
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char *message = NULL;
int len = 0;
int pos = 0;
do {
len += strlen(*argv) + 1;
message = xrealloc(message, len + 1);
sprintf(message + pos, " %s", *argv),
pos = len;
} while (*++argv);
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syslog(i, "%s", message + 1); /* skip leading " " */
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}
closelog();
return EXIT_SUCCESS;
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}
/*-
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*
* This is the original license statement for the decode and pencode functions.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
*
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/