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 */ 25static 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 */ 47static 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 71int logger_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; 72int logger_main(int argc UNUSED_PARAM, char **argv) 73{ 74 char *str_p, *str_t; 75 int opt; 76 int i = 0; 77 FILE *f = NULL; 78 79 /* Fill out the name string early (may be overwritten later) */ 80 str_t = uid2uname_utoa(geteuid()); 81 82 /* Parse any options */ 83 opt = getopt32(argv, "p:st:c", &str_p, &str_t); 84 85 if (opt & 0x2) /* -s */ 86 i |= LOG_PERROR; 87 if (opt & 0x8) { /* -c */ 88 f = fopen_for_write(DEV_CONSOLE); 89 if (!f) 90 bb_error_msg("can't open console: %d %s\n", errno, strerror(errno)); 91 } 92 //if (opt & 0x4) /* -t */ 93 openlog(str_t, i, 0); 94 i = LOG_USER | LOG_WARNING; 95 if (opt & 0x1) /* -p */ 96 i = pencode(str_p); 97 98 argv += optind; 99 if (!argv[0]) { 100 while (fgets(strbuf, COMMON_BUFSIZE, stdin)) { 101 if (strbuf[0] 102 && NOT_LONE_CHAR(strbuf, '\n') 103 ) { 104 /* Neither "" nor "\n" */ 105 syslog(i, "%s", strbuf); 106 if (f) 107 fprintf(f, "%s", strbuf); 108 } 109 } 110 } else { 111 char *message = NULL; 112 int len = 0; 113 int pos = 0; 114 do { 115 len += strlen(*argv) + 1; 116 message = xrealloc(message, len + 1); 117 sprintf(message + pos, " %s", *argv), 118 pos = len; 119 } while (*++argv); 120 syslog(i, "%s", message + 1); /* skip leading " " */ 121 if (f) 122 fprintf(f, "%s", message + 1); 123 } 124 125 closelog(); 126 if (f) 127 fclose(f); 128 return EXIT_SUCCESS; 129} 130 131/* Clean up. Needed because we are included from syslogd_and_logger.c */ 132#undef strbuf 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 */ 168