1 014c66b6 2023-06-25 op /*
 2 014c66b6 2023-06-25 op  * Copyright (c) 2022 Omar Polo <op@openbsd.org>
 3 014c66b6 2023-06-25 op  *
 4 014c66b6 2023-06-25 op  * Permission to use, copy, modify, and distribute this software for any
 5 014c66b6 2023-06-25 op  * purpose with or without fee is hereby granted, provided that the above
 6 014c66b6 2023-06-25 op  * copyright notice and this permission notice appear in all copies.
 7 014c66b6 2023-06-25 op  *
 8 014c66b6 2023-06-25 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 014c66b6 2023-06-25 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 014c66b6 2023-06-25 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 014c66b6 2023-06-25 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 014c66b6 2023-06-25 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 014c66b6 2023-06-25 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 014c66b6 2023-06-25 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 014c66b6 2023-06-25 op  */
16 014c66b6 2023-06-25 op 
17 014c66b6 2023-06-25 op #include <err.h>
18 014c66b6 2023-06-25 op #include <stdio.h>
19 014c66b6 2023-06-25 op #include <stdlib.h>
20 014c66b6 2023-06-25 op #include <unistd.h>
21 014c66b6 2023-06-25 op 
22 014c66b6 2023-06-25 op int	 parse(FILE *, const char *);
23 014c66b6 2023-06-25 op 
24 014c66b6 2023-06-25 op int	 nodebug;
25 014c66b6 2023-06-25 op 
26 014c66b6 2023-06-25 op static void __dead
27 014c66b6 2023-06-25 op usage(void)
28 014c66b6 2023-06-25 op {
29 014c66b6 2023-06-25 op 	fprintf(stderr, "usage: %s [file...]\n",
30 014c66b6 2023-06-25 op 	    getprogname());
31 014c66b6 2023-06-25 op 	exit(1);
32 014c66b6 2023-06-25 op }
33 014c66b6 2023-06-25 op 
34 014c66b6 2023-06-25 op int
35 014c66b6 2023-06-25 op main(int argc, char **argv)
36 014c66b6 2023-06-25 op {
37 014c66b6 2023-06-25 op 	FILE		*fp = stdout;
38 014c66b6 2023-06-25 op 	const char	*out = NULL;
39 014c66b6 2023-06-25 op 	int		 ch, i;
40 014c66b6 2023-06-25 op 
41 014c66b6 2023-06-25 op 	while ((ch = getopt(argc, argv, "Go:")) != -1) {
42 014c66b6 2023-06-25 op 		switch (ch) {
43 014c66b6 2023-06-25 op 		case 'G':
44 014c66b6 2023-06-25 op 			nodebug = 1;
45 014c66b6 2023-06-25 op 			break;
46 014c66b6 2023-06-25 op 		case 'o':
47 014c66b6 2023-06-25 op 			out = optarg;
48 014c66b6 2023-06-25 op 			break;
49 014c66b6 2023-06-25 op 		default:
50 014c66b6 2023-06-25 op 			usage();
51 014c66b6 2023-06-25 op 		}
52 014c66b6 2023-06-25 op 	}
53 014c66b6 2023-06-25 op 	argc -= optind;
54 014c66b6 2023-06-25 op 	argv += optind;
55 014c66b6 2023-06-25 op 
56 014c66b6 2023-06-25 op 	if (out && (fp = fopen(out, "w")) == NULL)
57 014c66b6 2023-06-25 op 		err(1, "can't open %s", out);
58 014c66b6 2023-06-25 op 
59 014c66b6 2023-06-25 op 	if (out && unveil(out, "wc") == -1)
60 014c66b6 2023-06-25 op 		err(1, "unveil %s", out);
61 014c66b6 2023-06-25 op 	if (unveil("/", "r") == -1)
62 014c66b6 2023-06-25 op 		err(1, "unveil /");
63 014c66b6 2023-06-25 op 	if (pledge(out ? "stdio rpath cpath" : "stdio rpath", NULL) == -1)
64 014c66b6 2023-06-25 op 		err(1, "pledge");
65 014c66b6 2023-06-25 op 
66 014c66b6 2023-06-25 op 	if (argc == 0) {
67 014c66b6 2023-06-25 op 		nodebug = 1;
68 014c66b6 2023-06-25 op 		if (parse(fp, "/dev/stdin") == -1)
69 014c66b6 2023-06-25 op 			goto err;
70 014c66b6 2023-06-25 op 	} else {
71 014c66b6 2023-06-25 op 		for (i = 0; i < argc; ++i)
72 014c66b6 2023-06-25 op 			if (parse(fp, argv[i]) == -1)
73 014c66b6 2023-06-25 op 				goto err;
74 014c66b6 2023-06-25 op 	}
75 014c66b6 2023-06-25 op 
76 014c66b6 2023-06-25 op 	if (ferror(fp))
77 014c66b6 2023-06-25 op 		goto err;
78 014c66b6 2023-06-25 op 
79 014c66b6 2023-06-25 op 	if (fclose(fp) == -1) {
80 014c66b6 2023-06-25 op 		fp = NULL;
81 014c66b6 2023-06-25 op 		goto err;
82 014c66b6 2023-06-25 op 	}
83 014c66b6 2023-06-25 op 
84 014c66b6 2023-06-25 op 	return (0);
85 014c66b6 2023-06-25 op 
86 014c66b6 2023-06-25 op err:
87 014c66b6 2023-06-25 op 	if (fp)
88 014c66b6 2023-06-25 op 		fclose(fp);
89 014c66b6 2023-06-25 op 	if (out && unlink(out) == -1)
90 014c66b6 2023-06-25 op 		err(1, "unlink %s", out);
91 014c66b6 2023-06-25 op 	return (1);
92 014c66b6 2023-06-25 op }