busybox/sysklogd/logger.c

/* vi: set sw=4 ts=4: */
/*
 * Mini logger implementation for busybox
 *
 * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

/*
 * Done in syslogd_and_logger.c:
#include "libbb.h"
#define SYSLOG_NAMES
#define SYSLOG_NAMES_CONST
#include <syslog.h>
*/

/* Decode a symbolic name to a numeric value
 * 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.
 */
static int decode(char *name, const CODE *codetab)
{
	const CODE *c;

	if (isdigit(*name))
		return atoi(name);
	for (c = codetab; c->c_name; c++) {
		if (!strcasecmp(name, c->c_name)) {
			return c->c_val;
		}
	}

	return -1;
}

/* Decode a symbolic name to a numeric value
 * 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.
 */
static int pencode(char *s)
{
	char *save;
	int lev, fac = LOG_USER;

	for (save = s; *s && *s != '.'; ++s)
		;
	if (*s) {
		*s = '\0';
		fac = decode(save, facilitynames);
		if (fac < 0)
			bb_error_msg_and_die("unknown %s name: %s", "facility", save);
		*s++ = '.';
	} else {
		s = save;
	}
	lev = decode(s, prioritynames);
	if (lev < 0)
		bb_error_msg_and_die("unknown %s name: %s", "priority", save);
	return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
}

#define strbuf bb_common_bufsiz1

int logger_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int logger_main(int argc UNUSED_PARAM, char **argv)
{
	char *str_p, *str_t;
	int opt;
	int i = 0;

	/* Fill out the name string early (may be overwritten later) */
	str_t = uid2uname_utoa(geteuid());

	/* Parse any options */
	opt = getopt32(argv, "p:st:", &str_p, &str_t);

	if (opt & 0x2) /* -s */
		i |= LOG_PERROR;
	//if (opt & 0x4) /* -t */
	openlog(str_t, i, 0);
	i = LOG_USER | LOG_NOTICE;
	if (opt & 0x1) /* -p */
		i = pencode(str_p);

	argv += optind;
	if (!argv[0]) {
		while (fgets(strbuf, COMMON_BUFSIZE, stdin)) {
			if (strbuf[0]
			 && NOT_LONE_CHAR(strbuf, '\n')
			) {
				/* Neither "" nor "\n" */
				syslog(i, "%s", strbuf);
			}
		}
	} else {
		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);
		syslog(i, "%s", message + 1); /* skip leading " " */
	}

	closelog();
	return EXIT_SUCCESS;
}

/* Clean up. Needed because we are included from syslogd_and_logger.c */
#undef strbuf

/*-
 * 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.
 */
1	/* vi: set sw=4 ts=4: */
2	/*
3	* Mini logger implementation for busybox
4	*
5	* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
6	*
7	* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8	*/
9
10	/*
11	* Done in syslogd_and_logger.c:
12	#include "libbb.h"
13	#define SYSLOG_NAMES
14	#define SYSLOG_NAMES_CONST
15	#include <syslog.h>
16	*/
17
18	/* Decode a symbolic name to a numeric value
19	* this function is based on code
20	* Copyright (c) 1983, 1993
21	* The Regents of the University of California. All rights reserved.
22	*
23	* Original copyright notice is retained at the end of this file.
24	*/
25	static int decode(char name, const CODE codetab)
26	{
27	const CODE *c;
28
29	if (isdigit(*name))
30	return atoi(name);
31	for (c = codetab; c->c_name; c++) {
32	if (!strcasecmp(name, c->c_name)) {
33	return c->c_val;
34	}
35	}
36
37	return -1;
38	}
39
40	/* Decode a symbolic name to a numeric value
41	* this function is based on code
42	* Copyright (c) 1983, 1993
43	* The Regents of the University of California. All rights reserved.
44	*
45	* Original copyright notice is retained at the end of this file.
46	*/
47	static int pencode(char *s)
48	{
49	char *save;
50	int lev, fac = LOG_USER;
51
52	for (save = s; s && s != '.'; ++s)
53	;
54	if (*s) {
55	*s = '\0';
56	fac = decode(save, facilitynames);
57	if (fac < 0)
58	bb_error_msg_and_die("unknown %s name: %s", "facility", save);
59	*s++ = '.';
60	} else {
61	s = save;
62	}
63	lev = decode(s, prioritynames);
64	if (lev < 0)
65	bb_error_msg_and_die("unknown %s name: %s", "priority", save);
66	return ((lev & LOG_PRIMASK) \| (fac & LOG_FACMASK));
67	}
68
69	#define strbuf bb_common_bufsiz1
70
71	int logger_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
72	int logger_main(int argc UNUSED_PARAM, char **argv)
73	{
74	char str_p, str_t;
75	int opt;
76	int i = 0;
77
78	/* Fill out the name string early (may be overwritten later) */
79	str_t = uid2uname_utoa(geteuid());
80
81	/* Parse any options */
82	opt = getopt32(argv, "p:st:", &str_p, &str_t);
83
84	if (opt & 0x2) /* -s */
85	i \|= LOG_PERROR;
86	//if (opt & 0x4) /* -t */
87	openlog(str_t, i, 0);
88	i = LOG_USER \| LOG_NOTICE;
89	if (opt & 0x1) /* -p */
90	i = pencode(str_p);
91
92	argv += optind;
93	if (!argv[0]) {
94	while (fgets(strbuf, COMMON_BUFSIZE, stdin)) {
95	if (strbuf[0]
96	&& NOT_LONE_CHAR(strbuf, '\n')
97	) {
98	/* Neither "" nor "\n" */
99	syslog(i, "%s", strbuf);
100	}
101	}
102	} else {
103	char *message = NULL;
104	int len = 0;
105	int pos = 0;
106	do {
107	len += strlen(*argv) + 1;
108	message = xrealloc(message, len + 1);
109	sprintf(message + pos, " %s", *argv),
110	pos = len;
111	} while (*++argv);
112	syslog(i, "%s", message + 1); /* skip leading " " */
113	}
114
115	closelog();
116	return EXIT_SUCCESS;
117	}
118
119	/* Clean up. Needed because we are included from syslogd_and_logger.c */
120	#undef strbuf
121
122	/*-
123	* Copyright (c) 1983, 1993
124	* The Regents of the University of California. All rights reserved.
125	*
126	* This is the original license statement for the decode and pencode functions.
127	*
128	* Redistribution and use in source and binary forms, with or without
129	* modification, are permitted provided that the following conditions
130	* are met:
131	* 1. Redistributions of source code must retain the above copyright
132	* notice, this list of conditions and the following disclaimer.
133	* 2. Redistributions in binary form must reproduce the above copyright
134	* notice, this list of conditions and the following disclaimer in the
135	* documentation and/or other materials provided with the distribution.
136	*
137	* 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
138	* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
139	*
140	* 4. Neither the name of the University nor the names of its contributors
141	* may be used to endorse or promote products derived from this software
142	* without specific prior written permission.
143	*
144	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
145	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
146	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
147	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
148	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
149	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
150	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
151	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
152	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
153	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
154	* SUCH DAMAGE.
155	*/