--- /dev/null
+/* -*-c-*-
+ *
+ * $Id: catcrypt.c,v 1.1 2004/04/17 09:58:36 mdw Exp $
+ *
+ * Command-line encryption tool
+ *
+ * (c) 2004 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 ------------------------------------------------------*/
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <mLib/base64.h>
+#include <mLib/dstr.h>
+#include <mLib/mdwopt.h>
+#include <mLib/quis.h>
+#include <mLib/report.h>
+#include <mLib/sub.h>
+
+#include "buf.h"
+#include "rand.h"
+#include "noise.h"
+#include "mprand.h"
+#include "key.h"
+#include "cc.h"
+
+/*----- Utilities ---------------------------------------------------------*/
+
+/* --- @keyreport@ --- *
+ *
+ * Arguments: @const char *file@ = filename containing the error
+ * @int line@ = line number in file
+ * @const char *err@ = error text message
+ * @void *p@ = unimportant pointer
+ *
+ * Returns: ---
+ *
+ * Use: Reports errors during the opening of a key file.
+ */
+
+static void keyreport(const char *file, int line, const char *err, void *p)
+{
+ moan("error in keyring `%s' at line `%s': %s", file, line, err);
+}
+
+/*----- Static variables --------------------------------------------------*/
+
+static const char *keyring = "keyring";
+
+/*----- Data format -------------------------------------------------------*/
+
+/* --- Overview --- *
+ *
+ * The encrypted message is divided into chunks, each preceded by a two-octet
+ * length. The chunks don't need to be large -- the idea is that we can
+ * stream the chunks in and out.
+ *
+ * The first chunk is a header. It contains the decryption key-id, and maybe
+ * the verification key-id if the message is signed.
+ *
+ * Next comes the key-encapsulation chunk. This is decrypted in some
+ * KEM-specific way to yield a secret hash. This hash is what is signed if
+ * the message is signed. The hash is expanded using an MGF (or similar) to
+ * make a symmetric encryption and MAC key.
+ *
+ * If the message is signed, there comes a signature chunk. The signature is
+ * on the secret hash. This means that the recipient can modify the message
+ * and still have a valid signature, so it's not useful for proving things to
+ * other people; but it also means that the recipient knows that the message
+ * is from someone who knows the hash, which limits the possiblities to (a)
+ * whoever encrypted the message (good!) and (b) whoever knows the
+ * recipient's private key.
+ *
+ * Then come message chunks. Each one begins with a MAC over an implicit
+ * sequence number and the ciphertext. The final chunk's ciphertext is
+ * empty; no other chunk is empty. Thus can the correct end-of-file be
+ * discerned.
+ */
+
+/*----- Chunk I/O ---------------------------------------------------------*/
+
+static void chunk_write(enc *e, buf *b)
+{
+ octet l[2];
+ size_t n = BLEN(b);
+ assert(n <= MASK16);
+ STORE16(l, n);
+ if (e->ops->write(e, l, 2) ||
+ e->ops->write(e, BBASE(b), BLEN(b)))
+ die(EXIT_FAILURE, "error writing output: %s", strerror(errno));
+}
+
+static void chunk_read(enc *e, dstr *d, buf *b)
+{
+ octet l[2];
+ size_t n;
+
+ dstr_reset(d);
+ errno = 0;
+ if (e->ops->read(e, l, 2) != 2)
+ goto err;
+ n = LOAD16(l);
+ dstr_ensure(d, n);
+ if (e->ops->read(e, d->buf, n) != n)
+ goto err;
+ d->len = n;
+ buf_init(b, d->buf, d->len);
+ return;
+
+err:
+ if (!errno) die(EXIT_FAILURE, "unexpected end-of-file on input");
+ else die(EXIT_FAILURE, "error reading input: %s", strerror(errno));
+}
+
+/*----- Encryption --------------------------------------------------------*/
+
+static int encrypt(int argc, char *argv[])
+{
+ const char *of = 0, *kn = "ccrypt";
+ FILE *ofp = 0;
+ FILE *fp = 0;
+ const char *ef = "binary";
+ const char *err;
+ int i;
+ size_t n;
+ dstr d = DSTR_INIT;
+ octet *tag, *ct;
+ buf b;
+ size_t seq;
+ char bb[16384];
+ unsigned f = 0;
+ key_file kf;
+ key *k;
+ kem *km;
+ gcipher *cx, *c;
+ gmac *m;
+ ghash *h;
+ const encops *eo;
+ enc *e;
+
+#define f_bogus 1u
+
+ for (;;) {
+ static const struct option opt[] = {
+ { "key", OPTF_ARGREQ, 0, 'k' },
+ { "armour", 0, 0, 'a' },
+ { "armor", 0, 0, 'a' },
+ { "format", OPTF_ARGREQ, 0, 'f' },
+ { "output", OPTF_ARGREQ, 0, 'o' },
+ { 0, 0, 0, 0 }
+ };
+ i = mdwopt(argc, argv, "k:af:o:", opt, 0, 0, 0);
+ if (i < 0) break;
+ switch (i) {
+ case 'k': kn = optarg; break;
+ case 'a': ef = "pem"; break;
+ case 'f': ef = optarg; break;
+ case 'o': of = optarg; break;
+ default: f |= f_bogus; break;
+ }
+ }
+ if (argc - optind > 1 || (f & f_bogus))
+ die(EXIT_FAILURE, "Usage: encrypt [-options] [file]");
+
+ if (key_open(&kf, keyring, KOPEN_READ, keyreport, 0))
+ die(EXIT_FAILURE, "can't open keyring `%s'", keyring);
+ if ((k = key_bytag(&kf, kn)) == 0)
+ die(EXIT_FAILURE, "key `%s' not found", kn);
+
+ if ((eo = getenc(ef)) == 0)
+ die(EXIT_FAILURE, "encoding `%s' not found", ef);
+
+ if (optind == argc)
+ fp = stdin;
+ else if (strcmp(argv[optind], "-") == 0) {
+ fp = stdin;
+ optind++;
+ } else if ((fp = fopen(argv[optind], "rb")) == 0) {
+ die(EXIT_FAILURE, "couldn't open file `%s': %s",
+ argv[optind], strerror(errno));
+ } else
+ optind++;
+
+ if (!of || strcmp(of, "-") == 0)
+ ofp = stdout;
+ else if ((ofp = fopen(of, eo->wmode)) == 0) {
+ die(EXIT_FAILURE, "couldn't open file `%s' for output: %s",
+ ofp, strerror(errno));
+ }
+
+ key_fulltag(k, &d);
+ e = initenc(eo, ofp, "CATCRYPT ENCRYPTED MESSAGE", 1);
+ km = getkem(k, "ccrypt", 0);
+ if ((err = km->ops->check(km)) != 0)
+ moan("key `%s' fails check: %s", d.buf, err);
+
+ /* --- Build the header chunk --- */
+
+ dstr_reset(&d);
+ dstr_ensure(&d, 256);
+ buf_init(&b, d.buf, 256);
+ buf_putu32(&b, k->id);
+ assert(BOK(&b));
+ chunk_write(e, &b);
+
+ /* --- Build the KEM chunk --- */
+
+ dstr_reset(&d);
+ if (setupkem(km, &d, &cx, &c, &m))
+ die(EXIT_FAILURE, "failed to encapsulate key");
+ buf_init(&b, d.buf, d.len);
+ BSTEP(&b, d.len);
+ chunk_write(e, &b);
+
+ /* --- Now do the main crypto --- */
+
+ assert(GC_CLASS(c)->blksz <= sizeof(bb));
+ dstr_ensure(&d, sizeof(bb) + GM_CLASS(m)->hashsz);
+ seq = 0;
+ for (;;) {
+ h = GM_INIT(m);
+ STORE32(bb, seq);
+ GH_HASH(h, bb, 4);
+ seq++;
+ if (GC_CLASS(c)->blksz) {
+ GC_ENCRYPT(cx, 0, bb, GC_CLASS(c)->blksz);
+ GC_SETIV(c, bb);
+ }
+ n = fread(bb, 1, sizeof(bb), fp);
+ if (!n) break;
+ buf_init(&b, d.buf, d.sz);
+ tag = buf_get(&b, GM_CLASS(m)->hashsz);
+ ct = buf_get(&b, n);
+ assert(tag); assert(ct);
+ GC_ENCRYPT(c, bb, ct, n);
+ GH_HASH(h, ct, n);
+ GH_DONE(h, tag);
+ GH_DESTROY(h);
+ chunk_write(e, &b);
+ }
+
+ /* --- Final terminator packet --- */
+
+ buf_init(&b, d.buf, d.sz);
+ tag = buf_get(&b, GM_CLASS(m)->hashsz);
+ assert(tag);
+ GH_DONE(h, tag);
+ GH_DESTROY(h);
+ chunk_write(e, &b);
+
+ /* --- All done --- */
+
+ e->ops->encdone(e);
+ GM_DESTROY(m);
+ GC_DESTROY(c);
+ GC_DESTROY(cx);
+ freeenc(e);
+ freekem(km);
+ if (of) fclose(ofp);
+ key_close(&kf);
+ dstr_destroy(&d);
+ return (0);
+
+#undef f_bogus
+}
+
+/*---- Decryption ---------------------------------------------------------*/
+
+static int decrypt(int argc, char *argv[])
+{
+ const char *of = 0;
+ FILE *ofp = 0;
+ FILE *fp = 0;
+ const char *ef = "binary";
+ int i;
+ dstr d = DSTR_INIT;
+ buf b;
+ key_file kf;
+ size_t seq;
+ uint32 id;
+ key *k;
+ kem *km;
+ gcipher *cx;
+ gcipher *c;
+ ghash *h;
+ gmac *m;
+ octet *tag;
+ unsigned f = 0;
+ const encops *eo;
+ enc *e;
+
+#define f_bogus 1u
+
+ for (;;) {
+ static const struct option opt[] = {
+ { "armour", 0, 0, 'a' },
+ { "armor", 0, 0, 'a' },
+ { "format", OPTF_ARGREQ, 0, 'f' },
+ { "output", OPTF_ARGREQ, 0, 'o' },
+ { 0, 0, 0, 0 }
+ };
+ i = mdwopt(argc, argv, "af:o:", opt, 0, 0, 0);
+ if (i < 0) break;
+ switch (i) {
+ case 'a': ef = "pem"; break;
+ case 'f': ef = optarg; break;
+ case 'o': of = optarg; break;
+ default: f |= f_bogus; break;
+ }
+ }
+ if (argc - optind > 1 || (f & f_bogus))
+ die(EXIT_FAILURE, "Usage: decrypt [-options] [file]");
+
+ if ((eo = getenc(ef)) == 0)
+ die(EXIT_FAILURE, "encoding `%s' not found", ef);
+
+ if (optind == argc)
+ fp = stdin;
+ else if (strcmp(argv[optind], "-") == 0) {
+ fp = stdin;
+ optind++;
+ } else if ((fp = fopen(argv[optind], eo->rmode)) == 0) {
+ die(EXIT_FAILURE, "couldn't open file `%s': %s",
+ argv[optind], strerror(errno));
+ } else
+ optind++;
+
+ if (key_open(&kf, keyring, KOPEN_READ, keyreport, 0))
+ die(EXIT_FAILURE, "can't open keyring `%s'", keyring);
+
+ e = initenc(eo, fp, "CATCRYPT ENCRYPTED MESSAGE", 0);
+
+ /* --- Read the header chunk --- */
+
+ chunk_read(e, &d, &b);
+ if (buf_getu32(&b, &id))
+ die(EXIT_FAILURE, "malformed header: missing keyid");
+ if (BLEFT(&b))
+ die(EXIT_FAILURE, "malformed header: junk at end");
+
+ /* --- Find the key --- */
+
+ if ((k = key_byid(&kf, id)) == 0)
+ die(EXIT_FAILURE, "key id %08lx not found", (unsigned long)id);
+ km = getkem(k, "ccrypt", 1);
+
+ /* --- Read the KEM chunk --- */
+
+ chunk_read(e, &d, &b);
+ if (setupkem(km, &d, &cx, &c, &m))
+ die(EXIT_FAILURE, "failed to decapsulate key");
+
+ /* --- Now decrypt the main body --- */
+
+ if (!of || strcmp(of, "-") == 0)
+ ofp = stdout;
+ else if ((ofp = fopen(of, "wb")) == 0) {
+ die(EXIT_FAILURE, "couldn't open file `%s' for output: %s",
+ ofp, strerror(errno));
+ }
+
+ seq = 0;
+ dstr_ensure(&d, GC_CLASS(c)->blksz);
+ dstr_ensure(&d, 4);
+ for (;;) {
+ if (GC_CLASS(c)->blksz) {
+ GC_ENCRYPT(cx, 0, d.buf, GC_CLASS(c)->blksz);
+ GC_SETIV(c, d.buf);
+ }
+ h = GM_INIT(m);
+ STORE32(d.buf, seq);
+ GH_HASH(h, d.buf, 4);
+ seq++;
+ chunk_read(e, &d, &b);
+ if ((tag = buf_get(&b, GM_CLASS(m)->hashsz)) == 0)
+ die(EXIT_FAILURE, "bad ciphertext chunk: no tag");
+ GH_HASH(h, BCUR(&b), BLEFT(&b));
+ if (memcmp(tag, GH_DONE(h, 0), GM_CLASS(m)->hashsz) != 0)
+ die(EXIT_FAILURE, "bad ciphertext chunk: authentication failure");
+ if (!BLEFT(&b))
+ break;
+ GC_DECRYPT(c, BCUR(&b), BCUR(&b), BLEFT(&b));
+ if (fwrite(BCUR(&b), 1, BLEFT(&b), ofp) != BLEFT(&b))
+ die(EXIT_FAILURE, "error writing output: %s", strerror(errno));
+ }
+
+ if (fflush(ofp) || ferror(ofp))
+ die(EXIT_FAILURE, "error writing output: %s", strerror(errno));
+
+ e->ops->decdone(e);
+ freeenc(e);
+ GC_DESTROY(c);
+ GC_DESTROY(cx);
+ GM_DESTROY(m);
+ freekem(km);
+ if (of) fclose(ofp);
+ key_close(&kf);
+ dstr_destroy(&d);
+ return (0);
+
+#undef f_bogus
+}
+
+/*----- Test code ---------------------------------------------------------*/
+
+static int encode(int argc, char *argv[])
+{
+ const char *of = 0;
+ FILE *ofp = 0;
+ FILE *fp = 0;
+ const char *ef = "binary";
+ const char *bd = "MESSAGE";
+ int i;
+ size_t n;
+ char buf[4096];
+ unsigned f = 0;
+ const encops *eo;
+ enc *e;
+
+#define f_bogus 1u
+
+ for (;;) {
+ static const struct option opt[] = {
+ { "format", OPTF_ARGREQ, 0, 'f' },
+ { "boundary", OPTF_ARGREQ, 0, 'b' },
+ { "output", OPTF_ARGREQ, 0, 'o' },
+ { 0, 0, 0, 0 }
+ };
+ i = mdwopt(argc, argv, "f:b:o:", opt, 0, 0, 0);
+ if (i < 0) break;
+ switch (i) {
+ case 'f': ef = optarg; break;
+ case 'b': bd = optarg; break;
+ case 'o': of = optarg; break;
+ default: f |= f_bogus; break;
+ }
+ }
+ if (argc - optind > 1 || (f & f_bogus))
+ die(EXIT_FAILURE, "Usage: encode [-options] [file]");
+
+ if ((eo = getenc(ef)) == 0)
+ die(EXIT_FAILURE, "encoding `%s' not found", ef);
+
+ if (optind == argc)
+ fp = stdin;
+ else if (strcmp(argv[optind], "-") == 0) {
+ fp = stdin;
+ optind++;
+ } else if ((fp = fopen(argv[optind], "rb")) == 0) {
+ die(EXIT_FAILURE, "couldn't open file `%s': %s",
+ argv[optind], strerror(errno));
+ } else
+ optind++;
+
+ if (!of || strcmp(of, "-") == 0)
+ ofp = stdout;
+ else if ((ofp = fopen(of, eo->wmode)) == 0) {
+ die(EXIT_FAILURE, "couldn't open file `%s' for output: %s",
+ ofp, strerror(errno));
+ }
+
+ e = initenc(eo, ofp, bd, 1);
+
+ do {
+ n = fread(buf, 1, sizeof(buf), fp);
+ if (e->ops->write(e, buf, n))
+ die(EXIT_FAILURE, "error writing output: %s", strerror(errno));
+ } while (n == sizeof(buf));
+ e->ops->encdone(e);
+ freeenc(e);
+ return (0);
+
+#undef f_bogus
+}
+
+static int decode(int argc, char *argv[])
+{
+ const char *of = 0;
+ FILE *ofp = 0;
+ FILE *fp = 0;
+ const char *ef = "binary";
+ const char *bd = 0;
+ int i;
+ char buf[4096];
+ unsigned f = 0;
+ const encops *eo;
+ enc *e;
+
+#define f_bogus 1u
+
+ for (;;) {
+ static const struct option opt[] = {
+ { "format", OPTF_ARGREQ, 0, 'f' },
+ { "boundary", OPTF_ARGREQ, 0, 'b' },
+ { "output", OPTF_ARGREQ, 0, 'o' },
+ { 0, 0, 0, 0 }
+ };
+ i = mdwopt(argc, argv, "f:b:o:", opt, 0, 0, 0);
+ if (i < 0) break;
+ switch (i) {
+ case 'f': ef = optarg; break;
+ case 'b': bd = optarg; break;
+ case 'o': of = optarg; break;
+ default: f |= f_bogus; break;
+ }
+ }
+ if (argc - optind > 1 || (f & f_bogus))
+ die(EXIT_FAILURE, "Usage: decode [-options] [file]");
+
+ if ((eo = getenc(ef)) == 0)
+ die(EXIT_FAILURE, "encoding `%s' not found", ef);
+
+ if (optind == argc)
+ fp = stdin;
+ else if (strcmp(argv[optind], "-") == 0) {
+ fp = stdin;
+ optind++;
+ } else if ((fp = fopen(argv[optind], eo->rmode)) == 0) {
+ die(EXIT_FAILURE, "couldn't open file `%s': %s",
+ argv[optind], strerror(errno));
+ } else
+ optind++;
+
+ if (!of || strcmp(of, "-") == 0)
+ ofp = stdout;
+ else if ((ofp = fopen(of, "wb")) == 0) {
+ die(EXIT_FAILURE, "couldn't open file `%s' for output: %s",
+ ofp, strerror(errno));
+ }
+
+ e = initenc(eo, fp, bd, 0);
+
+ do {
+ if ((i = e->ops->read(e, buf, sizeof(buf))) < 0)
+ die(EXIT_FAILURE, "error reading input: %s", strerror(errno));
+ if (fwrite(buf, 1, i, ofp) < i)
+ die(EXIT_FAILURE, "error writing output: %s", strerror(errno));
+ } while (i == sizeof(buf));
+ e->ops->decdone(e);
+ freeenc(e);
+ return (0);
+
+#undef f_bogus
+}
+
+/*----- Main code ---------------------------------------------------------*/
+
+typedef struct cmd {
+ const char *name;
+ int (*func)(int /*argc*/, char */*argv*/[]);
+ const char *usage;
+ const char *help;
+} cmd;
+
+static cmd cmdtab[] = {
+ { "encode", encode,
+ "encode [-f format] [-b label] [-o output] [file]",
+ "\
+Options:\n\
+\n\
+-f, --format=FORMAT Encode to FORMAT.\n\
+-b, --boundary=LABEL PEM boundary is LABEL.\n\
+-o, --output=FILE Write output to FILE.\n\
+" },
+ { "decode", decode,
+ "decode [-f format] [-b label] [-o output] [file]",
+ "\
+Options:\n\
+\n\
+-f, --format=FORMAT Decode from FORMAT.\n\
+-b, --boundary=LABEL PEM boundary is LABEL.\n\
+-o, --output=FILE Write output to FILE.\n\
+" },
+ { "encrypt", encrypt,
+ "encrypt [-a] [-k tag] [f format]] [-o output] [file]",
+ "\
+Options:\n\
+\n\
+-a, --armour Same as `-f pem'.\n\
+-f, --format=FORMAT Encode as FORMAT.\n\
+-k, --key=TAG Use public key named by TAG.\n\
+-o, --output=FILE Write output to FILE.\n\
+" },
+ { "decrypt", decrypt,
+ "decrypt [-t] [-o output] [file]", "\
+Options:\n\
+\n\
+-t, --text Read PEM-encoded input.\n\
+-o, --output=FILE Write output to FILE.\n\
+" },
+ { 0, 0, 0 }
+};
+
+/* --- @findcmd@ --- *
+ *
+ * Arguments: @const char *name@ = a command name
+ *
+ * Returns: Pointer to the command structure.
+ *
+ * Use: Looks up a command by name. If the command isn't found, an
+ * error is reported and the program is terminated.
+ */
+
+static cmd *findcmd(const char *name)
+{
+ cmd *c, *chosen = 0;
+ size_t sz = strlen(name);
+
+ for (c = cmdtab; c->name; c++) {
+ if (strncmp(name, c->name, sz) == 0) {
+ if (c->name[sz] == 0) {
+ chosen = c;
+ break;
+ } else if (chosen)
+ die(EXIT_FAILURE, "ambiguous command name `%s'", name);
+ else
+ chosen = c;
+ }
+ }
+ if (!chosen)
+ die(EXIT_FAILURE, "unknown command name `%s'", name);
+ return (chosen);
+}
+
+static void version(FILE *fp)
+{
+ pquis(fp, "$, Catacomb version " VERSION "\n");
+}
+
+static void usage(FILE *fp)
+{
+ pquis(fp, "Usage: $ [-k keyring] command [args]\n");
+}
+
+static void help(FILE *fp, char **argv)
+{
+ cmd *c;
+
+ if (*argv) {
+ c = findcmd(*argv);
+ fprintf(fp, "Usage: %s [-k keyring] %s\n", QUIS, c->usage);
+ if (c->help) {
+ fputc('\n', fp);
+ fputs(c->help, fp);
+ }
+ } else {
+ version(fp);
+ fputc('\n', fp);
+ usage(fp);
+ fputs("\n\
+Create and verify signatures on lists of files.\n\
+\n", fp);
+ for (c = cmdtab; c->name; c++)
+ fprintf(fp, "%s\n", c->usage);
+ }
+}
+
+/* --- @main@ --- *
+ *
+ * Arguments: @int argc@ = number of command line arguments
+ * @char *argv[]@ = vector of command line arguments
+ *
+ * Returns: Zero if successful, nonzero otherwise.
+ *
+ * Use: Signs or verifies signatures on lists of files. Useful for
+ * ensuring that a distribution is unmolested.
+ */
+
+int main(int argc, char *argv[])
+{
+ unsigned f = 0;
+
+#define f_bogus 1u
+
+ /* --- Initialize the library --- */
+
+ ego(argv[0]);
+ sub_init();
+ rand_noisesrc(RAND_GLOBAL, &noise_source);
+ rand_seed(RAND_GLOBAL, 160);
+
+ /* --- Parse options --- */
+
+ for (;;) {
+ static struct option opts[] = {
+ { "help", 0, 0, 'h' },
+ { "version", 0, 0, 'v' },
+ { "usage", 0, 0, 'u' },
+ { "keyring", OPTF_ARGREQ, 0, 'k' },
+ { 0, 0, 0, 0 }
+ };
+ int i = mdwopt(argc, argv, "+hvu k:", opts, 0, 0, 0);
+ if (i < 0)
+ break;
+ switch (i) {
+ case 'h':
+ help(stdout, argv + optind);
+ exit(0);
+ break;
+ case 'v':
+ version(stdout);
+ exit(0);
+ break;
+ case 'u':
+ usage(stdout);
+ exit(0);
+ case 'k':
+ keyring = optarg;
+ break;
+ default:
+ f |= f_bogus;
+ break;
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+ optind = 0;
+ if (f & f_bogus || argc < 1) {
+ usage(stderr);
+ exit(EXIT_FAILURE);
+ }
+
+ /* --- Dispatch to the correct subcommand handler --- */
+
+ return (findcmd(argv[0])->func(argc, argv));
+
+#undef f_bogus
+}
+
+/*----- That's all, folks -------------------------------------------------*/
projects / u / mdw / catacomb / blobdiff