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.
 */

#include "busybox.h"

#if !defined CONFIG_SYSLOGD

#define SYSLOG_NAMES
#include <sys/syslog.h>

#else
#include <sys/syslog.h>
#  ifndef __dietlibc__
	/* We have to do this since the header file defines static
	 * structures.  Argh.... bad libc, bad, bad...
	 */
	typedef struct _code {
		char *c_name;
		int c_val;
	} CODE;
	extern CODE prioritynames[];
	extern CODE facilitynames[];
#  endif
#endif

/* 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, CODE * codetab)
{
	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));
}


int logger_main(int argc, char **argv)
{
	char *str_p, *str_t;
	int i = 0;
	char name[80];

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

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

	if (option_mask32 & 0x2) /* -s */
		i |= LOG_PERROR;
	//if (option_mask32 & 0x4) /* -t */
	openlog(str_t, i, 0);
	i = LOG_USER | LOG_NOTICE;
	if (option_mask32 & 0x1) /* -p */
		i = pencode(str_p);

	argc -= optind;
	argv += optind;
	if (!argc) {
		while (fgets(bb_common_bufsiz1, BUFSIZ, stdin)) {
			if (bb_common_bufsiz1[0]
			 && NOT_LONE_CHAR(bb_common_bufsiz1, '\n')
			) {
				/* Neither "" nor "\n" */
				syslog(i, "%s", bb_common_bufsiz1);
			}
		}
	} else {
		char *message = NULL;
		int len = 1; /* for NUL */
		int pos = 0;
		do {
			len += strlen(*argv) + 1;
			message = xrealloc(message, len);
			sprintf(message + pos, " %s", *argv),
			pos = len;
		} while (*++argv);
		syslog(i, "%s", message + 1); /* skip leading " " */
	}

	closelog();
	return EXIT_SUCCESS;
}


/*-
 * 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	#include "busybox.h"
11
12	#if !defined CONFIG_SYSLOGD
13
14	#define SYSLOG_NAMES
15	#include <sys/syslog.h>
16
17	#else
18	#include <sys/syslog.h>
19	# ifndef __dietlibc__
20	/* We have to do this since the header file defines static
21	* structures. Argh.... bad libc, bad, bad...
22	*/
23	typedef struct _code {
24	char *c_name;
25	int c_val;
26	} CODE;
27	extern CODE prioritynames[];
28	extern CODE facilitynames[];
29	# endif
30	#endif
31
32	/* Decode a symbolic name to a numeric value
33	* this function is based on code
34	* Copyright (c) 1983, 1993
35	* The Regents of the University of California. All rights reserved.
36	*
37	* Original copyright notice is retained at the end of this file.
38	*/
39	static int decode(char name, CODE codetab)
40	{
41	CODE *c;
42
43	if (isdigit(*name))
44	return atoi(name);
45	for (c = codetab; c->c_name; c++) {
46	if (!strcasecmp(name, c->c_name)) {
47	return c->c_val;
48	}
49	}
50
51	return -1;
52	}
53
54	/* Decode a symbolic name to a numeric value
55	* this function is based on code
56	* Copyright (c) 1983, 1993
57	* The Regents of the University of California. All rights reserved.
58	*
59	* Original copyright notice is retained at the end of this file.
60	*/
61	static int pencode(char *s)
62	{
63	char *save;
64	int lev, fac = LOG_USER;
65
66	for (save = s; s && s != '.'; ++s)
67	;
68	if (*s) {
69	*s = '\0';
70	fac = decode(save, facilitynames);
71	if (fac < 0)
72	bb_error_msg_and_die("unknown %s name: %s", "facility", save);
73	*s++ = '.';
74	} else {
75	s = save;
76	}
77	lev = decode(s, prioritynames);
78	if (lev < 0)
79	bb_error_msg_and_die("unknown %s name: %s", "priority", save);
80	return ((lev & LOG_PRIMASK) \| (fac & LOG_FACMASK));
81	}
82
83
84	int logger_main(int argc, char **argv)
85	{
86	char str_p, str_t;
87	int i = 0;
88	char name[80];
89
90	/* Fill out the name string early (may be overwritten later) */
91	bb_getpwuid(name, geteuid(), sizeof(name));
92	str_t = name;
93
94	/* Parse any options */
95	getopt32(argc, argv, "p:st:", &str_p, &str_t);
96
97	if (option_mask32 & 0x2) /* -s */
98	i \|= LOG_PERROR;
99	//if (option_mask32 & 0x4) /* -t */
100	openlog(str_t, i, 0);
101	i = LOG_USER \| LOG_NOTICE;
102	if (option_mask32 & 0x1) /* -p */
103	i = pencode(str_p);
104
105	argc -= optind;
106	argv += optind;
107	if (!argc) {
108	while (fgets(bb_common_bufsiz1, BUFSIZ, stdin)) {
109	if (bb_common_bufsiz1[0]
110	&& NOT_LONE_CHAR(bb_common_bufsiz1, '\n')
111	) {
112	/* Neither "" nor "\n" */
113	syslog(i, "%s", bb_common_bufsiz1);
114	}
115	}
116	} else {
117	char *message = NULL;
118	int len = 1; /* for NUL */
119	int pos = 0;
120	do {
121	len += strlen(*argv) + 1;
122	message = xrealloc(message, len);
123	sprintf(message + pos, " %s", *argv),
124	pos = len;
125	} while (*++argv);
126	syslog(i, "%s", message + 1); /* skip leading " " */
127	}
128
129	closelog();
130	return EXIT_SUCCESS;
131	}
132
133
134	/*-
135	* Copyright (c) 1983, 1993
136	* The Regents of the University of California. All rights reserved.
137	*
138	* This is the original license statement for the decode and pencode functions.
139	*
140	* Redistribution and use in source and binary forms, with or without
141	* modification, are permitted provided that the following conditions
142	* are met:
143	* 1. Redistributions of source code must retain the above copyright
144	* notice, this list of conditions and the following disclaimer.
145	* 2. Redistributions in binary form must reproduce the above copyright
146	* notice, this list of conditions and the following disclaimer in the
147	* documentation and/or other materials provided with the distribution.
148	*
149	* 3. <BSD Advertising Clause omitted per the July 22, 1999 licensing change
150	* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change>
151	*
152	* 4. Neither the name of the University nor the names of its contributors
153	* may be used to endorse or promote products derived from this software
154	* without specific prior written permission.
155	*
156	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
157	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
158	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
159	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
160	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
161	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
162	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
163	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
164	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
165	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
166	* SUCH DAMAGE.
167	*/