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Current File : //usr/src/crypto/heimdal/appl/ftp/ftpd/klist.c

/*
 * Copyright (c) 1995 - 2005 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 "ftpd_locl.h"

#ifdef KRB5

static int
print_cred(krb5_context context, krb5_creds *cred)
{
    char t1[128], t2[128], *str;
    krb5_error_code ret;
    krb5_timestamp sec;

    krb5_timeofday (context, &sec);

    if(cred->times.starttime)
	krb5_format_time(context, cred->times.starttime, t1, sizeof(t1), 1);
    else
	krb5_format_time(context, cred->times.authtime, t1, sizeof(t1), 1);
    
    if(cred->times.endtime > sec)
	krb5_format_time(context, cred->times.endtime, t2, sizeof(t2), 1);
    else
	strlcpy(t2, ">>>Expired<<<", sizeof(t2));

    ret = krb5_unparse_name (context, cred->server, &str);
    if (ret) {
	lreply(500, "krb5_unparse_name: %d", ret);
	return 1;
    }

    lreply(200, "%-20s %-20s %s", t1, t2, str);
    free(str);
    return 0;
}

static int
print_tickets (krb5_context context,
	       krb5_ccache ccache,
	       krb5_principal principal)
{
    krb5_error_code ret;
    krb5_cc_cursor cursor;
    krb5_creds cred;
    char *str;

    ret = krb5_unparse_name (context, principal, &str);
    if (ret) {
	lreply(500, "krb5_unparse_name: %d", ret);
	return 500;
    }

    lreply(200, "%17s: %s:%s", 
	   "Credentials cache",
	   krb5_cc_get_type(context, ccache),
	   krb5_cc_get_name(context, ccache));
    lreply(200, "%17s: %s", "Principal", str);
    free (str);

    ret = krb5_cc_start_seq_get (context, ccache, &cursor);
    if (ret) {
	lreply(500, "krb5_cc_start_seq_get: %d", ret);
	return 500;
    }

    lreply(200, "  Issued               Expires              Principal");

    while ((ret = krb5_cc_next_cred (context,
				     ccache,
				     &cursor,
				     &cred)) == 0) {
	if (print_cred(context, &cred))
	    return 500;		
	krb5_free_cred_contents (context, &cred);
    }
    if (ret != KRB5_CC_END) {
	lreply(500, "krb5_cc_get_next: %d", ret);
	return 500;
    }
    ret = krb5_cc_end_seq_get (context, ccache, &cursor);
    if (ret) {
	lreply(500, "krb5_cc_end_seq_get: %d", ret);
	return 500;
    }

    return 200;
}

static int
klist5(void)
{
    krb5_error_code ret;
    krb5_context context;
    krb5_ccache ccache;
    krb5_principal principal;
    int exit_status = 200;

    ret = krb5_init_context (&context);
    if (ret) {
	lreply(500, "krb5_init_context failed: %d", ret);
	return 500;
    }

    if (k5ccname)
	ret = krb5_cc_resolve(context, k5ccname, &ccache);
    else
	ret = krb5_cc_default (context, &ccache);
    if (ret) {
	lreply(500, "krb5_cc_default: %d", ret);	    
	return 500;
    }

    ret = krb5_cc_get_principal (context, ccache, &principal);
    if (ret) {
	if(ret == ENOENT)
	    lreply(500, "No ticket file: %s",
		   krb5_cc_get_name(context, ccache));
	else
	    lreply(500, "krb5_cc_get_principal: %d", ret);

	return 500;
    }
    exit_status = print_tickets (context, ccache, principal);

    ret = krb5_cc_close (context, ccache);
    if (ret) {
	lreply(500, "krb5_cc_close: %d", ret);	    
	exit_status = 500;
    }

    krb5_free_principal (context, principal);
    krb5_free_context (context);
    return exit_status;
}
#endif

void
klist(void)
{
#if KRB5
    int res = klist5();
    reply(res, " ");
#else
    reply(500, "Command not implemented.");
#endif
}


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