+++ /dev/null
-/* -*-c-*-
- *
- * $Id$
- *
- * Hash files using some secure hash function
- *
- * (c) 2000 Straylight/Edgeware
- */
-
-/*----- Licensing notice --------------------------------------------------*
- *
- * This file is part of Catacomb.
- *
- * Catacomb is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Library General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * Catacomb 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 Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with Catacomb; if not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- */
-
-/*----- Header files ------------------------------------------------------*/
-
-#define _FILE_OFFSET_BITS 64
-
-#include "config.h"
-
-#include <assert.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <mLib/alloc.h>
-#include <mLib/dstr.h>
-#include <mLib/mdwopt.h>
-#include <mLib/quis.h>
-#include <mLib/report.h>
-#include <mLib/sub.h>
-
-#include "ghash.h"
-#include "cc.h"
-
-/*----- Static variables --------------------------------------------------*/
-
-#define f_bogus 1u
-#define f_verbose 2u
-#define f_check 4u
-#define f_files 8u
-#define f_oddhash 16u
-#define f_escape 32u
-#define f_oddenc 64u
-
-/*----- Guts --------------------------------------------------------------*/
-
-static int checkjunk(const char *path, const struct stat *st, void *p)
-{
- const char *what;
- fhashstate *fh = p;
-
- if (!st) {
- if (fh->f & f_verbose)
- fprintf(stderr, "JUNK (error %s) %s\n", strerror(errno), path);
- else
- moan("couldn't stat junk file `%s': %s", path, strerror(errno));
- } else {
- what = describefile(st);
- if (fh->f & f_verbose)
- fprintf(stderr, "JUNK %s %s\n", what, path);
- else
- moan("found junk %s `%s'", what, path);
- }
- return (0);
-}
-
-static int warnjunk(const char *path, const struct stat *st, void *p)
-{
- if (st)
- moan("unexpected %s `%s'", describefile(st), path);
- else
- moan("couldn't stat unexpected file `%s': %s", path, strerror(errno));
- return (0);
-}
-
-static int checkhash(fhashstate *fh, const char *file, const encodeops *e)
-{
- int rc;
- hfpctx hfp;
- dstr dl = DSTR_INIT;
- dstr df = DSTR_INIT;
- unsigned long n = 0, nfail = 0;
- int hf;
-
- if (!file || strcmp(file, "-") == 0)
- hfp.fp = stdin;
- else if ((hfp.fp = fopen(file, fh->f & GSF_RAW ? "r" : "rb")) == 0) {
- moan("couldn't open `%s': %s", file, strerror(errno));
- return (EXIT_FAILURE);
- }
-
- hfp.dline = &dl;
- hfp.dfile = &df;
- hfp.hbuf = xmalloc(2 * fh->gch->hashsz);
- hfp.gch = fh->gch;
- hfp.ee = e;
- hfp.f = fh->f;
-
- while ((hf = hfparse(&hfp)) != HF_EOF) {
- switch (hf) {
- case HF_HASH:
- xfree(hfp.hbuf);
- hfp.hbuf = xmalloc(2 * hfp.gch->hashsz);
- break;
- case HF_FILE:
- if (fhash(fh, df.buf, hfp.hbuf + hfp.gch->hashsz)) {
- moan("couldn't read `%s': %s", df.buf, strerror(errno));
- rc = EXIT_FAILURE;
- continue;
- }
- if (memcmp(hfp.hbuf, hfp.hbuf + hfp.gch->hashsz,
- hfp.gch->hashsz) != 0) {
- if (hfp.f & f_verbose)
- fprintf(stderr, "FAIL %s\n", df.buf);
- else
- moan("%s check failed for `%s'", hfp.gch->name, df.buf);
- nfail++;
- rc = EXIT_FAILURE;
- } else {
- if (hfp.f & f_verbose)
- fprintf(stderr, "OK %s\n", df.buf);
- }
- n++;
- }
- }
-
- if (ferror(hfp.fp)) {
- moan("error reading input `%s': %s",
- file ? file : "<stdin>", strerror(errno));
- rc = EXIT_FAILURE;
- }
- dstr_destroy(&dl);
- dstr_destroy(&df);
- xfree(hfp.hbuf);
- if ((fh->f & f_verbose) && nfail)
- moan("%lu of %lu file(s) failed %s check", nfail, n, hfp.gch->name);
- else if (!n)
- moan("no files checked");
- return (rc);
-}
-
-static int dohash(fhashstate *fh, const char *file, const encodeops *e)
-{
- int rc = 0;
- octet *p = xmalloc(fh->gch->hashsz);
-
- if (fhash(fh, file, p)) {
- moan("couldn't read `%s': %s", file ? file : "<stdin>", strerror(errno));
- rc = EXIT_FAILURE;
- } else {
- e->put(p, fh->gch->hashsz, stdout);
- if (file) {
- fputc(' ', stdout);
- fputc(fh->f & FHF_BINARY ? '*' : ' ', stdout);
- if (fh->f & f_escape)
- putstring(stdout, file, 0);
- else
- fputs(file, stdout);
- }
- fputc('\n', stdout);
- }
-
- xfree(p);
- return (rc);
-}
-
-static int dofile(fhashstate *fh, const char *file, const encodeops *e)
- { return (fh->f & f_check ? checkhash : dohash)(fh, file, e); }
-
-static int hashfiles(fhashstate *fh, const char *file, const encodeops *e)
-{
- FILE *fp;
- dstr d = DSTR_INIT;
- int rc = 0;
- int rrc;
-
- if (!file || strcmp(file, "-") == 0)
- fp = stdin;
- else if ((fp = fopen(file, fh->f & GSF_RAW ? "r" : "rb")) == 0) {
- moan("couldn't open `%s': %s", file, strerror(errno));
- return (EXIT_FAILURE);
- }
-
- for (;;) {
- DRESET(&d);
- if (getstring(fp, &d, GSF_FILE | fh->f))
- break;
- if ((rrc = dofile(fh, d.buf, e)) != 0)
- rc = rrc;
- }
-
- return (rc);
-}
-
-static int hashsum(fhashstate *fh, const char *file, const encodeops *e)
- { return (fh->f & f_files ? hashfiles : dofile)(fh, file, e); }
-
-/*----- Main driver -------------------------------------------------------*/
-
-void version(FILE *fp)
-{
- pquis(fp, "$, Catacomb version " VERSION "\n");
-}
-
-static void usage(FILE *fp)
-{
- pquis(fp, "Usage: $ [-f0ebcv] [-a ALGORITHM] [-E ENC] [FILES...]\n");
-}
-
-static void help(FILE *fp, const gchash *gch)
-{
- version(fp);
- fputc('\n', fp);
- usage(fp);
- pquis(fp, "\n\
-Generates or checks message digests on files. Options available:\n\
-\n\
--h, --help Display this help message.\n\
--V, --version Display program's version number.\n\
--u, --usage Display a terse usage message.\n\
--l, --list [ITEM...] Show known hash functions and/or encodings.\n\
-\n\
--a, --algorithm=ALG Use the message digest algorithm ALG.\n\
--E, --encoding=ENC Represent hashes using encoding ENC.\n\
-\n\
--f, --files Read a list of file names from standard input.\n\
--0, --null File names are null terminated, not plain text.\n\
-\n\
--e, --escape Escape funny characters in filenames.\n\
--c, --check Check message digests rather than emitting them.\n\
--b, --binary When reading files, treat them as binary.\n\
--p, --progress Show a progress indicator for large files.\n\
--v, --verbose Be verbose when checking digests.\n\
-\n\
-For a list of hashing algorithms and encodings, type `$ --list'.\n\
-");
- if (gch)
- fprintf(fp, "The default message digest algorithm is %s.\n", gch->name);
-}
-
-#define LISTS(LI) \
- LI("Lists", list, listtab[i].name, listtab[i].name) \
- LI("Hash functions", hash, ghashtab[i], ghashtab[i]->name) \
- LI("Encodings", enc, encodingtab[i].name, encodingtab[i].name)
-
-MAKELISTTAB(listtab, LISTS)
-
-int main(int argc, char *argv[])
-{
- fhashstate fh;
- const encodeops *e = &encodingtab[ENC_HEX];
- int rc;
-
- /* --- Initialization --- */
-
- ego(argv[0]);
- sub_init();
- fhash_init(&fh, 0, 0);
-
- /* --- Choose a hash function from the name --- */
-
- {
- char *q = xstrdup(QUIS);
- size_t len = strlen(q);
- if (len > 3 && strcmp(q + len - 3, "sum") == 0) {
- q[len - 3] = 0;
- fh.gch = gethash(q);
- }
- if (!fh.gch)
- fh.gch = gethash("md5");
- xfree(q);
- }
-
- /* --- Read options --- */
-
- for (;;) {
- static struct option opts[] = {
- { "help", 0, 0, 'h' },
- { "verbose", 0, 0, 'V' },
- { "usage", 0, 0, 'u' },
-
- { "algorithm", OPTF_ARGREQ, 0, 'a' },
- { "hash", OPTF_ARGREQ, 0, 'a' },
- { "encoding", OPTF_ARGREQ, 0, 'E' },
- { "list", 0, 0, 'l' },
-
- { "files", 0, 0, 'f' },
- { "find", 0, 0, 'f' },
- { "null", 0, 0, '0' },
-
- { "escape", 0, 0, 'e' },
- { "check", 0, 0, 'c' },
- { "junk", 0, 0, 'j' },
- { "binary", 0, 0, 'b' },
- { "verbose", 0, 0, 'v' },
- { "progress", 0, 0, 'p' },
-
- { 0, 0, 0, 0 }
- };
- int i = mdwopt(argc, argv, "hVu a:E:l f0 ecjbvp", opts, 0, 0, 0);
- if (i < 0)
- break;
-
- switch (i) {
- case 'h':
- help(stdout, fh.gch);
- exit(0);
- case 'V':
- version(stdout);
- exit(0);
- case 'u':
- usage(stdout);
- exit(0);
- case 'l':
- exit(displaylists(listtab, argv + optind));
- case 'a':
- if ((fh.gch = gethash(optarg)) == 0)
- die(EXIT_FAILURE, "unknown hash algorithm `%s'", optarg);
- fh.f |= f_oddhash;
- break;
- case 'E':
- if ((e = getencoding(optarg)) == 0)
- die(EXIT_FAILURE, "unknown encoding `%s'", optarg);
- fh.f |= f_oddenc;
- break;
- case 'f':
- fh.f |= f_files;
- break;
- case '0':
- fh.f |= GSF_RAW;
- break;
- case 'e':
- fh.f |= f_escape;
- break;
- case 'c':
- fh.f |= f_check;
- break;
- case 'j':
- fh.f |= FHF_JUNK;
- break;
- case 'b':
- fh.f |= FHF_BINARY;
- break;
- case 'v':
- fh.f |= f_verbose;
- break;
- case 'p':
- fh.f |= FHF_PROGRESS;
- break;
- default:
- fh.f |= f_bogus;
- break;
- }
- }
-
- if (fh.f & f_bogus) {
- usage(stderr);
- exit(EXIT_FAILURE);
- }
- argv += optind;
- argc -= optind;
-
- /* --- Generate output --- */
-
- if (!(fh.f & f_check) && (argc || (fh.f & f_files))) {
- if (fh.f & f_oddhash) printf("#hash %s\n", fh.gch->name);
- if (fh.f & f_oddenc) printf("#encoding %s\n", e->name);
- if (fh.f & f_escape) fputs("#escape\n", stdout);
- }
- if (!argc)
- rc = hashsum(&fh, 0, e);
- else {
- int i;
- int rrc;
-
- rc = 0;
- for (i = 0; i < argc; i++) {
- if ((rrc = hashsum(&fh, argv[i], e)) != 0)
- rc = rrc;
- }
- }
-
- if (fh.f & FHF_JUNK) {
- if (fh.f & f_check) {
- if (fhash_junk(&fh, checkjunk, &fh)) rc = EXIT_FAILURE;
- } else {
- if (fhash_junk(&fh, warnjunk, 0) < 0) rc = EXIT_FAILURE;
- }
- }
- fhash_free(&fh);
-
- return (rc);
-}
-
-/*----- That's all, folks -------------------------------------------------*/
projects / u / mdw / catacomb / blobdiff