1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2005-2008 Poul-Henning Kamp
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <stdio.h>
30#include <assert.h>
31#include <unistd.h>
32#include <err.h>
33#include <time.h>
34#include <string.h>
35#include <stdlib.h>
36#include <sysexits.h>
37#include <regex.h>
38
39#include "libfifolog.h"
40
41static time_t opt_B;
42static time_t opt_E;
43static const char *opt_T;
44static const char *opt_o;
45static const char *opt_R;
46static regex_t R;
47
48static FILE *fo;
49
50static void
51Render(void *priv __unused, time_t now, unsigned flag __unused, const unsigned char *p, unsigned l __unused)
52{
53	static struct tm utc;
54	char buf[128];
55	int i;
56
57	if (now < opt_B || now > opt_E)
58		return;
59
60	if (opt_R != NULL && regexec(&R, (const char *)p, 0, NULL, 0))
61		return;
62
63	if (opt_T != NULL && *opt_T == '\0') {
64		fprintf(fo, "%s\n", p);
65	} else if (opt_T != NULL) {
66		(void)gmtime_r(&now, &utc);
67		i = strftime(buf, sizeof buf, opt_T, &utc);
68		assert(i > 0);
69		fprintf(fo, "%s %s\n", buf, p);
70	} else {
71		fprintf(fo, "%12ld %s\n", (long)now, p);
72	}
73}
74
75/*--------------------------------------------------------------------*/
76
77static void
78Usage(void)
79{
80	fprintf(stderr,
81		"Usage: fiforead [options] fifofile\n"
82		"\t-b <start time integer>\n"
83		"\t-B <start time>\n"
84		"\t-e <end time integer>\n"
85		"\t-E <end time>\n"
86		"\t-o <output file>\n"
87		"\t-R <regexp> # match regexp\n"
88		"\t-t # format timestamps as %%Y%%m%%d%%H%%M%%S\n"
89		"\t-T <timestamp format>\n"
90	);
91	exit (EX_USAGE);
92}
93
94int
95main(int argc, char * const *argv)
96{
97	int ch, i;
98	off_t o;
99	struct fifolog_reader *fl;
100
101	time(&opt_E);
102	opt_o = "-";
103	while ((ch = getopt(argc, argv, "b:B:e:E:o:R:tT:")) != -1) {
104		switch (ch) {
105		case 'b':
106			opt_B = strtoul(optarg, NULL, 0);
107			break;
108		case 'B':
109			opt_B = get_date(optarg);
110			if (opt_B == -1)
111				errx(1, "Didn't understand \"%s\"", optarg);
112			break;
113		case 'e':
114			opt_E = strtoul(optarg, NULL, 0);
115			break;
116		case 'E':
117			opt_E = get_date(optarg);
118			if (opt_E == -1)
119				errx(1, "Didn't understand \"%s\"", optarg);
120			break;
121		case 'o':
122			opt_o = optarg;
123			break;
124		case 'R':
125			opt_R = optarg;
126			break;
127		case 't':
128			opt_T = "%Y%m%d%H%M%S";
129			break;
130		case 'T':
131			opt_T = optarg;
132			break;
133		default:
134			Usage();
135		}
136	}
137	argc -= optind;
138	argv += optind;
139
140	if (opt_R != NULL) {
141		i = regcomp(&R, opt_R, REG_NOSUB);
142		if (i != 0) {
143			char buf[BUFSIZ];
144			(void)regerror(i, &R, buf, sizeof buf);
145			fprintf(stderr, "-R argument: %s\n", buf);
146			exit (1);
147		}
148	}
149
150	if (argv[0] == NULL)
151		Usage();
152
153	fprintf(stderr, "From\t%jd %s", (intmax_t)opt_B, ctime(&opt_B));
154	fprintf(stderr, "To\t%jd %s", (intmax_t)opt_E, ctime(&opt_E));
155	if (opt_B >= opt_E)
156		errx(1, "Begin time not before End time");
157
158	fl = fifolog_reader_open(argv[0]);
159
160	if (!strcmp(opt_o, "-"))
161		fo = stdout;
162	else {
163		fo = fopen(opt_o, "w");
164		if (fo == NULL)
165			err(1, "Cannot open: %s", argv[1]);
166	}
167
168	o = fifolog_reader_seek(fl, opt_B);
169	fifolog_reader_process(fl, o, Render, NULL, opt_E);
170	return (0);
171}
172