1 bff58270 2022-09-19 op /*
 2 52afe358 2022-12-17 op  * Copyright (c) 2022 Omar Polo <op@openbsd.org>
 3 bff58270 2022-09-19 op  *
 4 bff58270 2022-09-19 op  * Permission to use, copy, modify, and distribute this software for any
 5 bff58270 2022-09-19 op  * purpose with or without fee is hereby granted, provided that the above
 6 bff58270 2022-09-19 op  * copyright notice and this permission notice appear in all copies.
 7 bff58270 2022-09-19 op  *
 8 bff58270 2022-09-19 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 bff58270 2022-09-19 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 bff58270 2022-09-19 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 bff58270 2022-09-19 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 bff58270 2022-09-19 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 bff58270 2022-09-19 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 bff58270 2022-09-19 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 bff58270 2022-09-19 op  */
16 bff58270 2022-09-19 op 
17 bff58270 2022-09-19 op #include <err.h>
18 bff58270 2022-09-19 op #include <stdio.h>
19 bff58270 2022-09-19 op #include <stdlib.h>
20 bff58270 2022-09-19 op #include <unistd.h>
21 bff58270 2022-09-19 op 
22 14c31a43 2022-11-25 op int	 parse(FILE *, const char *);
23 bff58270 2022-09-19 op 
24 14c31a43 2022-11-25 op int	 nodebug;
25 bff58270 2022-09-19 op 
26 bff58270 2022-09-19 op static void __dead
27 bff58270 2022-09-19 op usage(void)
28 bff58270 2022-09-19 op {
29 bff58270 2022-09-19 op 	fprintf(stderr, "usage: %s [file...]\n",
30 bff58270 2022-09-19 op 	    getprogname());
31 bff58270 2022-09-19 op 	exit(1);
32 bff58270 2022-09-19 op }
33 bff58270 2022-09-19 op 
34 bff58270 2022-09-19 op int
35 bff58270 2022-09-19 op main(int argc, char **argv)
36 bff58270 2022-09-19 op {
37 14c31a43 2022-11-25 op 	FILE		*fp = stdout;
38 14c31a43 2022-11-25 op 	const char	*out = NULL;
39 14c31a43 2022-11-25 op 	int		 ch, i;
40 bff58270 2022-09-19 op 
41 14c31a43 2022-11-25 op 	while ((ch = getopt(argc, argv, "Go:")) != -1) {
42 bff58270 2022-09-19 op 		switch (ch) {
43 bff58270 2022-09-19 op 		case 'G':
44 bff58270 2022-09-19 op 			nodebug = 1;
45 bff58270 2022-09-19 op 			break;
46 14c31a43 2022-11-25 op 		case 'o':
47 14c31a43 2022-11-25 op 			out = optarg;
48 14c31a43 2022-11-25 op 			break;
49 bff58270 2022-09-19 op 		default:
50 bff58270 2022-09-19 op 			usage();
51 bff58270 2022-09-19 op 		}
52 bff58270 2022-09-19 op 	}
53 bff58270 2022-09-19 op 	argc -= optind;
54 bff58270 2022-09-19 op 	argv += optind;
55 bff58270 2022-09-19 op 
56 14c31a43 2022-11-25 op 	if (out && (fp = fopen(out, "w")) == NULL)
57 14c31a43 2022-11-25 op 		err(1, "can't open %s", out);
58 14c31a43 2022-11-25 op 
59 14c31a43 2022-11-25 op 	if (out && unveil(out, "wc") == -1)
60 14c31a43 2022-11-25 op 		err(1, "unveil %s", out);
61 14c31a43 2022-11-25 op 	if (unveil("/", "r") == -1)
62 14c31a43 2022-11-25 op 		err(1, "unveil /");
63 14c31a43 2022-11-25 op 	if (pledge(out ? "stdio rpath cpath" : "stdio rpath", NULL) == -1)
64 14c31a43 2022-11-25 op 		err(1, "pledge");
65 14c31a43 2022-11-25 op 
66 bff58270 2022-09-19 op 	if (argc == 0) {
67 c11015c2 2022-11-25 op 		nodebug = 1;
68 14c31a43 2022-11-25 op 		if (parse(fp, "/dev/stdin") == -1)
69 14c31a43 2022-11-25 op 			goto err;
70 14c31a43 2022-11-25 op 	} else {
71 14c31a43 2022-11-25 op 		for (i = 0; i < argc; ++i)
72 14c31a43 2022-11-25 op 			if (parse(fp, argv[i]) == -1)
73 14c31a43 2022-11-25 op 				goto err;
74 bff58270 2022-09-19 op 	}
75 bff58270 2022-09-19 op 
76 14c31a43 2022-11-25 op 	if (ferror(fp))
77 14c31a43 2022-11-25 op 		goto err;
78 bff58270 2022-09-19 op 
79 14c31a43 2022-11-25 op 	if (fclose(fp) == -1) {
80 14c31a43 2022-11-25 op 		fp = NULL;
81 14c31a43 2022-11-25 op 		goto err;
82 14c31a43 2022-11-25 op 	}
83 14c31a43 2022-11-25 op 
84 bff58270 2022-09-19 op 	return (0);
85 14c31a43 2022-11-25 op 
86 14c31a43 2022-11-25 op err:
87 14c31a43 2022-11-25 op 	if (fp)
88 14c31a43 2022-11-25 op 		fclose(fp);
89 14c31a43 2022-11-25 op 	if (out && unlink(out) == -1)
90 14c31a43 2022-11-25 op 		err(1, "unlink %s", out);
91 14c31a43 2022-11-25 op 	return (1);
92 bff58270 2022-09-19 op }