source: heimdal/trunk/admin/ktutil.c@ 3

/*
 * Copyright (c) 1997-2004 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "ktutil_locl.h"
#include <err.h>

RCSID("$Id$");

static int help_flag;
static int version_flag;
int verbose_flag;
char *keytab_string;
static char keytab_buf[256];

static struct getargs args[] = {
    {
        "version",
        0,
        arg_flag,
        &version_flag,
        NULL,
        NULL
    },
    {
        "help",
        'h',
        arg_flag,
        &help_flag,
        NULL,
        NULL
    },
    {
        "keytab",
        'k',
        arg_string,
        &keytab_string,
        "keytab",
        "keytab to operate on"
    },
    {
        "verbose",
        'v',
        arg_flag,
        &verbose_flag,
        "verbose",
        "run verbosely"
    }
};

static int num_args = sizeof(args) / sizeof(args[0]);

krb5_context context;

krb5_keytab
ktutil_open_keytab(void)
{
    krb5_error_code ret;
    krb5_keytab keytab;
    if (keytab_string == NULL) {
        ret = krb5_kt_default_name (context, keytab_buf, sizeof(keytab_buf));
        if (ret) {
            krb5_warn(context, ret, "krb5_kt_default_name");
            return NULL;
        }
        keytab_string = keytab_buf;
    }
    ret = krb5_kt_resolve(context, keytab_string, &keytab);
    if (ret) {
        krb5_warn(context, ret, "resolving keytab %s", keytab_string);
        return NULL;
    }
    if (verbose_flag)
        fprintf (stderr, "Using keytab %s\n", keytab_string);

    return keytab;
}

int
help(void *opt, int argc, char **argv)
{
    if(argc == 0) {
        sl_help(commands, 1, argv - 1 /* XXX */);
    } else {
        SL_cmd *c = sl_match (commands, argv[0], 0);
        if(c == NULL) {
            fprintf (stderr, "No such command: %s. "
                     "Try \"help\" for a list of commands\n",
                     argv[0]);
        } else {
            if(c->func) {
                char shelp[] = "--help";
                char *fake[3];
                fake[0] = argv[0];
                fake[1] = shelp;
                fake[2] = NULL;
                (*c->func)(2, fake);
                fprintf(stderr, "\n");
            }
            if(c->help && *c->help)
                fprintf (stderr, "%s\n", c->help);
            if((++c)->name && c->func == NULL) {
                int f = 0;
                fprintf (stderr, "Synonyms:");
                while (c->name && c->func == NULL) {
                    fprintf (stderr, "%s%s", f ? ", " : " ", (c++)->name);
                    f = 1;
                }
                fprintf (stderr, "\n");
            }
        }
    }
    return 0;
}

static void
usage(int status)
{
    arg_printusage(args, num_args, NULL, "command");
    exit(status);
}

int
main(int argc, char **argv)
{
    int optidx = 0;
    krb5_error_code ret;
    setprogname(argv[0]);
    ret = krb5_init_context(&context);
    if (ret)
        errx (1, "krb5_init_context failed: %d", ret);
    if(getarg(args, num_args, argc, argv, &optidx))
        usage(1);
    if(help_flag)
        usage(0);
    if(version_flag) {
        print_version(NULL);
        exit(0);
    }
    argc -= optidx;
    argv += optidx;
    if(argc == 0)
        usage(1);
    ret = sl_command(commands, argc, argv);
    if(ret == -1)
        krb5_warnx (context, "unrecognized command: %s", argv[0]);
    return ret;
}