[catacomb] / progs / hashsum.c

/* -*-c-*-
 *
 * 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 = 0;
  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);
	fh->gch = hfp.gch;
	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 -------------------------------------------------*/
Commit	Line	Data
e375fe33	1	/* --c--
e375fe33	2	*
e375fe33	3	* Hash files using some secure hash function
	4	*
	5	* (c) 2000 Straylight/Edgeware
	6	*/
	7
45c0fd36	8	/----- Licensing notice --------------------------------------------------
e375fe33	9	*
	10	* This file is part of Catacomb.
	11	*
	12	* Catacomb is free software; you can redistribute it and/or modify
	13	* it under the terms of the GNU Library General Public License as
	14	* published by the Free Software Foundation; either version 2 of the
	15	* License, or (at your option) any later version.
45c0fd36	16	*
e375fe33	17	* Catacomb is distributed in the hope that it will be useful,
	18	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	20	* GNU Library General Public License for more details.
45c0fd36	21	*
e375fe33	22	* You should have received a copy of the GNU Library General Public
	23	* License along with Catacomb; if not, write to the Free
	24	* Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
	25	* MA 02111-1307, USA.
	26	*/
	27
e375fe33	28	/----- Header files ------------------------------------------------------/
e375fe33	29
43d1332f MW	30	#define _FILE_OFFSET_BITS 64
43d1332f MW	31
e375fe33	32	#include "config.h"
e375fe33	33
5685a696	34	#include <assert.h>
e375fe33	35	#include <errno.h>
	36	#include <stdio.h>
	37	#include <stdlib.h>
	38	#include <string.h>
	39
	40	#include <mLib/alloc.h>
	41	#include <mLib/dstr.h>
	42	#include <mLib/mdwopt.h>
	43	#include <mLib/quis.h>
	44	#include <mLib/report.h>
	45	#include <mLib/sub.h>
e375fe33	46
e375fe33	47	#include "ghash.h"
c65df279	48	#include "cc.h"
e375fe33	49
e375fe33	50	/----- Static variables --------------------------------------------------/
e375fe33	51
18b3351a MW	52	#define f_bogus 1u
	53	#define f_verbose 2u
	54	#define f_check 4u
	55	#define f_files 8u
	56	#define f_oddhash 16u
	57	#define f_escape 32u
	58	#define f_oddenc 64u
e375fe33	59
e375fe33	60	/----- Guts --------------------------------------------------------------/
e375fe33	61
f5e91c02 MW	62	static int checkjunk(const char path, const struct stat st, void *p)
	63	{
	64	const char *what;
	65	fhashstate *fh = p;
	66
	67	if (!st) {
	68	if (fh->f & f_verbose)
	69	fprintf(stderr, "JUNK (error %s) %s\n", strerror(errno), path);
	70	else
	71	moan("couldn't stat junk file `%s': %s", path, strerror(errno));
	72	} else {
	73	what = describefile(st);
	74	if (fh->f & f_verbose)
	75	fprintf(stderr, "JUNK %s %s\n", what, path);
	76	else
	77	moan("found junk %s `%s'", what, path);
	78	}
	79	return (0);
	80	}
	81
	82	static int warnjunk(const char path, const struct stat st, void *p)
	83	{
	84	if (st)
	85	moan("unexpected %s `%s'", describefile(st), path);
	86	else
	87	moan("couldn't stat unexpected file `%s': %s", path, strerror(errno));
	88	return (0);
	89	}
	90
07290a45	91	static int checkhash(fhashstate fh, const char file, const encodeops *e)
e375fe33	92	{
24e27402	93	int rc = 0;
f377eee1 MW	94	hfpctx hfp;
	95	dstr dl = DSTR_INIT;
	96	dstr df = DSTR_INIT;
e375fe33	97	unsigned long n = 0, nfail = 0;
f377eee1	98	int hf;
e375fe33	99
d7e6bc66	100	if (!file \|\| strcmp(file, "-") == 0)
f377eee1	101	hfp.fp = stdin;
07290a45	102	else if ((hfp.fp = fopen(file, fh->f & GSF_RAW ? "r" : "rb")) == 0) {
e375fe33	103	moan("couldn't open `%s': %s", file, strerror(errno));
	104	return (EXIT_FAILURE);
	105	}
	106
f377eee1 MW	107	hfp.dline = &dl;
f377eee1 MW	108	hfp.dfile = &df;
07290a45 MW	109	hfp.hbuf = xmalloc(2 * fh->gch->hashsz);
07290a45 MW	110	hfp.gch = fh->gch;
f377eee1	111	hfp.ee = e;
07290a45	112	hfp.f = fh->f;
f377eee1 MW	113
	114	while ((hf = hfparse(&hfp)) != HF_EOF) {
	115	switch (hf) {
	116	case HF_HASH:
	117	xfree(hfp.hbuf);
	118	hfp.hbuf = xmalloc(2 * hfp.gch->hashsz);
24e27402	119	fh->gch = hfp.gch;
f377eee1 MW	120	break;
f377eee1 MW	121	case HF_FILE:
07290a45	122	if (fhash(fh, df.buf, hfp.hbuf + hfp.gch->hashsz)) {
f377eee1 MW	123	moan("couldn't read `%s': %s", df.buf, strerror(errno));
f377eee1 MW	124	rc = EXIT_FAILURE;
5685a696	125	continue;
f377eee1 MW	126	}
	127	if (memcmp(hfp.hbuf, hfp.hbuf + hfp.gch->hashsz,
	128	hfp.gch->hashsz) != 0) {
	129	if (hfp.f & f_verbose)
	130	fprintf(stderr, "FAIL %s\n", df.buf);
	131	else
	132	moan("%s check failed for `%s'", hfp.gch->name, df.buf);
	133	nfail++;
	134	rc = EXIT_FAILURE;
	135	} else {
	136	if (hfp.f & f_verbose)
	137	fprintf(stderr, "OK %s\n", df.buf);
	138	}
	139	n++;
e375fe33	140	}
e375fe33	141	}
e375fe33	142
95d92463 MW	143	if (ferror(hfp.fp)) {
	144	moan("error reading input `%s': %s",
	145	file ? file : "<stdin>", strerror(errno));
	146	rc = EXIT_FAILURE;
	147	}
f377eee1 MW	148	dstr_destroy(&dl);
	149	dstr_destroy(&df);
	150	xfree(hfp.hbuf);
07290a45	151	if ((fh->f & f_verbose) && nfail)
f377eee1	152	moan("%lu of %lu file(s) failed %s check", nfail, n, hfp.gch->name);
e375fe33	153	else if (!n)
e375fe33	154	moan("no files checked");
df8e52c7	155	return (rc);
e375fe33	156	}
e375fe33	157
07290a45	158	static int dohash(fhashstate fh, const char file, const encodeops *e)
e375fe33	159	{
e375fe33	160	int rc = 0;
07290a45	161	octet *p = xmalloc(fh->gch->hashsz);
e375fe33	162
07290a45	163	if (fhash(fh, file, p)) {
e375fe33	164	moan("couldn't read `%s': %s", file ? file : "<stdin>", strerror(errno));
	165	rc = EXIT_FAILURE;
	166	} else {
07290a45	167	e->put(p, fh->gch->hashsz, stdout);
e375fe33	168	if (file) {
e375fe33	169	fputc(' ', stdout);
07290a45 MW	170	fputc(fh->f & FHF_BINARY ? '*' : ' ', stdout);
07290a45 MW	171	if (fh->f & f_escape)
e375fe33	172	putstring(stdout, file, 0);
	173	else
	174	fputs(file, stdout);
	175	}
	176	fputc('\n', stdout);
	177	}
	178
	179	xfree(p);
	180	return (rc);
	181	}
	182
07290a45 MW	183	static int dofile(fhashstate fh, const char file, const encodeops *e)
07290a45 MW	184	{ return (fh->f & f_check ? checkhash : dohash)(fh, file, e); }
12902a5c	185
07290a45	186	static int hashfiles(fhashstate fh, const char file, const encodeops *e)
e375fe33	187	{
	188	FILE *fp;
	189	dstr d = DSTR_INIT;
	190	int rc = 0;
	191	int rrc;
	192
d7e6bc66	193	if (!file \|\| strcmp(file, "-") == 0)
e375fe33	194	fp = stdin;
07290a45	195	else if ((fp = fopen(file, fh->f & GSF_RAW ? "r" : "rb")) == 0) {
e375fe33	196	moan("couldn't open `%s': %s", file, strerror(errno));
	197	return (EXIT_FAILURE);
	198	}
	199
	200	for (;;) {
	201	DRESET(&d);
07290a45	202	if (getstring(fp, &d, GSF_FILE \| fh->f))
e375fe33	203	break;
07290a45	204	if ((rrc = dofile(fh, d.buf, e)) != 0)
e375fe33	205	rc = rrc;
	206	}
	207
	208	return (rc);
	209	}
	210
07290a45 MW	211	static int hashsum(fhashstate fh, const char file, const encodeops *e)
07290a45 MW	212	{ return (fh->f & f_files ? hashfiles : dofile)(fh, file, e); }
e375fe33	213
	214	/----- Main driver -------------------------------------------------------/
	215
c65df279	216	void version(FILE *fp)
e375fe33	217	{
	218	pquis(fp, "$, Catacomb version " VERSION "\n");
	219	}
	220
	221	static void usage(FILE *fp)
	222	{
c65df279	223	pquis(fp, "Usage: $ [-f0ebcv] [-a ALGORITHM] [-E ENC] [FILES...]\n");
e375fe33	224	}
	225
	226	static void help(FILE fp, const gchash gch)
	227	{
	228	version(fp);
	229	fputc('\n', fp);
	230	usage(fp);
	231	pquis(fp, "\n\
	232	Generates or checks message digests on files. Options available:\n\
	233	\n\
	234	-h, --help Display this help message.\n\
	235	-V, --version Display program's version number.\n\
	236	-u, --usage Display a terse usage message.\n\
c65df279	237	-l, --list [ITEM...] Show known hash functions and/or encodings.\n\
e375fe33	238	\n\
e375fe33	239	-a, --algorithm=ALG Use the message digest algorithm ALG.\n\
92c494ce	240	-E, --encoding=ENC Represent hashes using encoding ENC.\n\
e375fe33	241	\n\
	242	-f, --files Read a list of file names from standard input.\n\
	243	-0, --null File names are null terminated, not plain text.\n\
	244	\n\
	245	-e, --escape Escape funny characters in filenames.\n\
	246	-c, --check Check message digests rather than emitting them.\n\
	247	-b, --binary When reading files, treat them as binary.\n\
b2776fdf	248	-p, --progress Show a progress indicator for large files.\n\
e375fe33	249	-v, --verbose Be verbose when checking digests.\n\
e375fe33	250	\n\
92c494ce	251	For a list of hashing algorithms and encodings, type `$ --list'.\n\
e375fe33	252	");
	253	if (gch)
	254	fprintf(fp, "The default message digest algorithm is %s.\n", gch->name);
	255	}
	256
c65df279	257	#define LISTS(LI) \
	258	LI("Lists", list, listtab[i].name, listtab[i].name) \
	259	LI("Hash functions", hash, ghashtab[i], ghashtab[i]->name) \
	260	LI("Encodings", enc, encodingtab[i].name, encodingtab[i].name)
	261
	262	MAKELISTTAB(listtab, LISTS)
	263
e375fe33	264	int main(int argc, char *argv[])
e375fe33	265	{
07290a45	266	fhashstate fh;
95d92463	267	const encodeops *e = &encodingtab[ENC_HEX];
e375fe33	268	int rc;
	269
	270	/* --- Initialization --- */
	271
	272	ego(argv[0]);
	273	sub_init();
07290a45	274	fhash_init(&fh, 0, 0);
e375fe33	275
	276	/* --- Choose a hash function from the name --- */
	277
	278	{
	279	char *q = xstrdup(QUIS);
	280	size_t len = strlen(q);
	281	if (len > 3 && strcmp(q + len - 3, "sum") == 0) {
	282	q[len - 3] = 0;
07290a45	283	fh.gch = gethash(q);
e375fe33	284	}
07290a45 MW	285	if (!fh.gch)
07290a45 MW	286	fh.gch = gethash("md5");
e375fe33	287	xfree(q);
	288	}
	289
	290	/* --- Read options --- */
	291
	292	for (;;) {
	293	static struct option opts[] = {
	294	{ "help", 0, 0, 'h' },
	295	{ "verbose", 0, 0, 'V' },
	296	{ "usage", 0, 0, 'u' },
	297
	298	{ "algorithm", OPTF_ARGREQ, 0, 'a' },
	299	{ "hash", OPTF_ARGREQ, 0, 'a' },
5685a696	300	{ "encoding", OPTF_ARGREQ, 0, 'E' },
e375fe33	301	{ "list", 0, 0, 'l' },
	302
	303	{ "files", 0, 0, 'f' },
	304	{ "find", 0, 0, 'f' },
	305	{ "null", 0, 0, '0' },
	306
	307	{ "escape", 0, 0, 'e' },
	308	{ "check", 0, 0, 'c' },
f5e91c02	309	{ "junk", 0, 0, 'j' },
e375fe33	310	{ "binary", 0, 0, 'b' },
e375fe33	311	{ "verbose", 0, 0, 'v' },
43d1332f	312	{ "progress", 0, 0, 'p' },
e375fe33	313
	314	{ 0, 0, 0, 0 }
	315	};
f5e91c02	316	int i = mdwopt(argc, argv, "hVu a:E:l f0 ecjbvp", opts, 0, 0, 0);
e375fe33	317	if (i < 0)
	318	break;
	319
	320	switch (i) {
	321	case 'h':
07290a45	322	help(stdout, fh.gch);
e375fe33	323	exit(0);
	324	case 'V':
	325	version(stdout);
	326	exit(0);
	327	case 'u':
	328	usage(stdout);
	329	exit(0);
c65df279	330	case 'l':
c65df279	331	exit(displaylists(listtab, argv + optind));
e375fe33	332	case 'a':
07290a45	333	if ((fh.gch = gethash(optarg)) == 0)
e375fe33	334	die(EXIT_FAILURE, "unknown hash algorithm `%s'", optarg);
07290a45	335	fh.f \|= f_oddhash;
e375fe33	336	break;
5685a696	337	case 'E':
c65df279	338	if ((e = getencoding(optarg)) == 0)
5685a696	339	die(EXIT_FAILURE, "unknown encoding `%s'", optarg);
07290a45	340	fh.f \|= f_oddenc;
5685a696	341	break;
e375fe33	342	case 'f':
07290a45	343	fh.f \|= f_files;
e375fe33	344	break;
e375fe33	345	case '0':
07290a45	346	fh.f \|= GSF_RAW;
e375fe33	347	break;
e375fe33	348	case 'e':
07290a45	349	fh.f \|= f_escape;
e375fe33	350	break;
e375fe33	351	case 'c':
07290a45	352	fh.f \|= f_check;
e375fe33	353	break;
f5e91c02 MW	354	case 'j':
	355	fh.f \|= FHF_JUNK;
	356	break;
e375fe33	357	case 'b':
07290a45	358	fh.f \|= FHF_BINARY;
e375fe33	359	break;
e375fe33	360	case 'v':
07290a45	361	fh.f \|= f_verbose;
e375fe33	362	break;
43d1332f	363	case 'p':
07290a45	364	fh.f \|= FHF_PROGRESS;
43d1332f	365	break;
e375fe33	366	default:
07290a45	367	fh.f \|= f_bogus;
e375fe33	368	break;
	369	}
	370	}
	371
07290a45	372	if (fh.f & f_bogus) {
e375fe33	373	usage(stderr);
	374	exit(EXIT_FAILURE);
	375	}
	376	argv += optind;
	377	argc -= optind;
	378
	379	/* --- Generate output --- */
	380
07290a45 MW	381	if (!(fh.f & f_check) && (argc \|\| (fh.f & f_files))) {
	382	if (fh.f & f_oddhash) printf("#hash %s\n", fh.gch->name);
	383	if (fh.f & f_oddenc) printf("#encoding %s\n", e->name);
	384	if (fh.f & f_escape) fputs("#escape\n", stdout);
db2d393e	385	}
92c494ce	386	if (!argc)
07290a45	387	rc = hashsum(&fh, 0, e);
92c494ce	388	else {
e375fe33	389	int i;
e375fe33	390	int rrc;
92c494ce	391
e375fe33	392	rc = 0;
e375fe33	393	for (i = 0; i < argc; i++) {
07290a45	394	if ((rrc = hashsum(&fh, argv[i], e)) != 0)
e375fe33	395	rc = rrc;
e375fe33	396	}
92c494ce	397	}
e375fe33	398
f5e91c02 MW	399	if (fh.f & FHF_JUNK) {
	400	if (fh.f & f_check) {
	401	if (fhash_junk(&fh, checkjunk, &fh)) rc = EXIT_FAILURE;
	402	} else {
	403	if (fhash_junk(&fh, warnjunk, 0) < 0) rc = EXIT_FAILURE;
	404	}
	405	}
	406	fhash_free(&fh);
	407
e375fe33	408	return (rc);
	409	}
	410
	411	/----- That's all, folks -------------------------------------------------/