diff --git a/src/scrut.c b/src/scrut.c deleted file mode 100644 index 2d3c2bf..0000000 --- a/src/scrut.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - * Copyright (c) 2023–2024 DTB - * Copyright (c) 2024 Emma Tebibyte - * SPDX-License-Identifier: AGPL-3.0-or-later - * - * This program is free software: you can redistribute it and/or modify it under - * the terms of the GNU Affero General Public License as published by the Free - * Software Foundation, either version 3 of the License, or (at your option) any - * later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS - * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more - * details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see https://www.gnu.org/licenses/. - */ - -#include /* assert(3) */ -#include /* fprintf(3), stderr, NULL */ -#include /* EXIT_FAILURE, EXIT_SUCCESS */ -#include /* memset(3), strchr(3) */ -#include /* EX_OSERR, EX_USAGE */ -#include /* access(3), getopt(3), pledge(2), unveil(2), F_OK, R_OK, - * W_OK, X_OK */ -#include /* lstat(3), stat struct, S_ISBLK, S_ISCHR, S_ISDIR, - * S_ISFIFO, S_ISGID, S_ISREG, S_ISLNK, S_ISSOCK, - * S_ISUID, S_ISVTX */ - -char *program_name = "scrut"; -#define OPTS "bcdefgkprsuwxLS" -/* this is an array so main:sel's size can be known at compile time */ -static char opts[] = OPTS; - -static int -usage(char *argv0) { - (void)fprintf(stderr, "Usage: %s [-" OPTS "] file...\n", argv0); - - return EX_USAGE; -} - -int main(int argc, char *argv[]) { - char sel[(sizeof opts) / (sizeof *opts)]; - - program_name = argv[0] == NULL ? program_name : argv[0]; - -#ifdef __OpenBSD__ - if (pledge("rpath stdio unveil", "") == -1) { - perror(program_name); - return EX_OSERR; - } -#endif - - if (argc < 2) { return usage(program_name); } - - { /* option parsing */ - char *p; - - memset(sel, '\0', sizeof sel); - for (int c; (c = getopt(argc, argv, opts)) != -1;) { - if ((p = strchr(opts, c)) == NULL) { return usage(argv[0]); } - else { - assert(p - opts < sizeof sel / sizeof *sel); /* bounds check */ - sel[p - opts] = c; - } - } - - /* straighten out selections; permute out nulls */ - p = sel; - for (size_t i = 0; i < (sizeof sel) / (sizeof *sel); ++i) { - if (sel[i] != '\0') { - *p = sel[i]; - if (&sel[i] != p++) { sel[i] = '\0'; } - } - } - } - - if (optind == argc) { return usage(argv[0]); } - - for (argv += optind ; *argv != NULL; argv = &argv[1]) { - struct stat buf; - -#ifdef __OpenBSD__ - if (unveil(*argv, "rw") == -1) { - perror(program_name); - return EX_OSERR; - } -#endif - - if(access(*argv, F_OK) != 0 || lstat(*argv, &buf) == -1) { - return EXIT_FAILURE; /* doesn't exist or isn't stattable */ - } - - for (size_t i = 0; sel[i] != '\0'; ++i) { - if ( - (sel[i] == 'b' && !S_ISBLK(buf.st_mode)) - || (sel[i] == 'c' && !S_ISCHR(buf.st_mode)) - || (sel[i] == 'd' && !S_ISDIR(buf.st_mode)) - || (sel[i] == 'e' && 0) - || (sel[i] == 'f' && !S_ISREG(buf.st_mode)) - || (sel[i] == 'g' && !(buf.st_mode & S_ISGID)) - || (sel[i] == 'k' && !(buf.st_mode & S_ISVTX)) - || (sel[i] == 'p' && !S_ISFIFO(buf.st_mode)) - || (sel[i] == 'r' && access(*argv, R_OK) != 0) - || (sel[i] == 'u' && !(buf.st_mode & S_ISUID)) - || (sel[i] == 'w' && access(*argv, W_OK) != 0) - || (sel[i] == 'x' && access(*argv, X_OK) != 0) - || (sel[i] == 'L' && !S_ISLNK(buf.st_mode)) - || (sel[i] == 'S' && !S_ISSOCK(buf.st_mode)) - ) { return EXIT_FAILURE; } - } - } - - return EXIT_SUCCESS; -}