89 lines
1.9 KiB
C
89 lines
1.9 KiB
C
/*-
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* Licensed under the SPDX BSD-2-Clause identifier.
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* Use is subject to license terms, as specified in the LICENSE file.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <errno.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <xbps.h>
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static void __attribute__((noreturn))
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usage(bool fail)
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{
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fprintf(stdout,
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"Usage: xbps-digest [options] [file] [file+N]\n"
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"\n"
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"OPTIONS\n"
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" -h, --help Show usage\n"
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" -m, --mode <sha256> Selects the digest mode, sha256 (default)\n"
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" -V, --version Show XBPS version\n"
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"\nNOTES\n"
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" If [file] not set, reads from stdin\n");
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exit(fail ? EXIT_FAILURE : EXIT_SUCCESS);
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}
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int
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main(int argc, char **argv)
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{
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int c;
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char sha256[XBPS_SHA256_SIZE];
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const char *mode = NULL, *progname = argv[0];
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const struct option longopts[] = {
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{ "mode", required_argument, NULL, 'm' },
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{ "help", no_argument, NULL, 'h' },
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{ "version", no_argument, NULL, 'V' },
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{ NULL, 0, NULL, 0 }
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};
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while ((c = getopt_long(argc, argv, "m:hV", longopts, NULL)) != -1) {
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switch (c) {
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case 'h':
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usage(false);
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/* NOTREACHED */
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case 'm':
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mode = optarg;
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break;
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case 'V':
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printf("%s\n", XBPS_RELVER);
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exit(EXIT_SUCCESS);
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case '?':
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default:
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usage(true);
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/* NOTREACHED */
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}
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}
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argc -= optind;
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argv += optind;
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if (mode && strcmp(mode, "sha256")) {
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/* sha256 is the only supported mode currently */
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fprintf(stderr, "%s: unsupported digest mode\n", progname);
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exit(EXIT_FAILURE);
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}
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if (argc < 1) {
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if (!xbps_file_sha256(sha256, sizeof sha256, "/dev/stdin"))
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exit(EXIT_FAILURE);
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printf("%s\n", sha256);
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} else {
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for (int i = 0; i < argc; i++) {
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if (!xbps_file_sha256(sha256, sizeof sha256, argv[i])) {
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fprintf(stderr,
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"%s: couldn't get hash for %s (%s)\n",
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progname, argv[i], strerror(errno));
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exit(EXIT_FAILURE);
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}
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printf("%s\n", sha256);
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}
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}
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exit(EXIT_SUCCESS);
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}
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