[u/mdw/catacomb] / hashsum.c

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