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	logger.c - sbase - suckless unix tools
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	---
	logger.c (1692B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <stdio.h>
	3 #include <stdlib.h>
	4 #include <string.h>
	5 #include <strings.h>
	6 #define SYSLOG_NAMES
	7 #include <syslog.h>
	8 #include <unistd.h>
	9
	10 #include "util.h"
	11
	12 static int
	13 decodetable(CODE table, char name)
	14 {
	15 CODE *c;
	16
	17 for (c = table; c->c_name; c++)
	18 if (!strcasecmp(name, c->c_name))
	19 return c->c_val;
	20 eprintf("invalid priority name: %s\n", name);
	21
	22 return -1; /* not reached */
	23 }
	24
	25 static int
	26 decodepri(char *pri)
	27 {
	28 char lev, fac = pri;
	29
	30 if (!(lev = strchr(pri, '.')))
	31 eprintf("invalid priority name: %s\n", pri);
	32 *lev++ = '\0';
	33 if (!*lev)
	34 eprintf("invalid priority name: %s\n", pri);
	35
	36 return (decodetable(facilitynames, fac) & LOG_FACMASK) \|
	37 (decodetable(prioritynames, lev) & LOG_PRIMASK);
	38 }
	39
	40 static void
	41 usage(void)
	42 {
	43 eprintf("usage: %s [-is] [-p priority] [-t tag] [message ...]\n"…
	44 }
	45
	46 int
	47 main(int argc, char *argv[])
	48 {
	49 size_t sz;
	50 int logflags = 0, priority = LOG_NOTICE, i;
	51 char buf = NULL, tag = NULL;
	52
	53 ARGBEGIN {
	54 case 'i':
	55 logflags \|= LOG_PID;
	56 break;
	57 case 'p':
	58 priority = decodepri(EARGF(usage()));
	59 break;
	60 case 's':
	61 logflags \|= LOG_PERROR;
	62 break;
	63 case 't':
	64 tag = EARGF(usage());
	65 break;
	66 default:
	67 usage();
	68 } ARGEND
	69
	70 openlog(tag ? tag : getlogin(), logflags, 0);
	71
	72 if (!argc) {
	73 while (getline(&buf, &sz, stdin) > 0)
	74 syslog(priority, "%s", buf);
	75 } else {
	76 for (i = 0, sz = 0; i < argc; i++)
	77 sz += strlen(argv[i]);
	78 sz += argc;
	79 buf = ecalloc(1, sz);
	80 for (i = 0; i < argc; i++) {
	81 estrlcat(buf, argv[i], sz);
	82 if (i + 1 < argc)
	83 estrlcat(buf, " ", sz);
	84 }
	85 syslog(priority, "%s", buf);
	86 }
	87
	88 closelog();
	89
	90 return fshut(stdin, "<stdin>");
	91 }