several new kerberos related libraries and applications to FreeBSD: o kgetcred(1) allows one to manually get a ticket for a particular service. o kf(1) securily forwards ticket to another host through an authenticated and encrypted stream. o kcc(1) is an umbrella program around klist(1), kswitch(1), kgetcred(1) and other user kerberos operations. klist and kswitch are just symlinks to kcc(1) now. o kswitch(1) allows you to easily switch between kerberos credentials if you're running KCM. o hxtool(1) is a certificate management tool to use with PKINIT. o string2key(1) maps a password into key. o kdigest(8) is a userland tool to access the KDC's digest interface. o kimpersonate(8) creates a "fake" ticket for a service. We also now install manpages for some lirbaries that were not installed before, libheimntlm and libhx509. - The new HEIMDAL version no longer supports Kerberos 4. All users are recommended to switch to Kerberos 5. - Weak ciphers are now disabled by default. To enable DES support (used by telnet(8)), use "allow_weak_crypto" option in krb5.conf. - libtelnet, pam_ksu and pam_krb5 are now compiled with error on warnings disabled due to the function they use (krb5_get_err_text(3)) being deprecated. I plan to work on this next. - Heimdal's KDC now require sqlite to operate. We use the bundled version and install it as libheimsqlite. If some other FreeBSD components will require it in the future we can rename it to libbsdsqlite and use for these components as well. - This is not a latest Heimdal version, the new one was released while I was working on the update. I will update it to 1.5.2 soon, as it fixes some important bugs and security issues.
294 lines
7.7 KiB
C
294 lines
7.7 KiB
C
/*
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* Copyright (c) 1999-2005 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of KTH nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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#include "hdb_locl.h"
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#include <hex.h>
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#include <ctype.h>
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/*
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This is the present contents of a dump line. This might change at
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any time. Fields are separated by white space.
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principal
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keyblock
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kvno
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keys...
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mkvno
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enctype
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keyvalue
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salt (- means use normal salt)
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creation date and principal
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modification date and principal
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principal valid from date (not used)
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principal valid end date (not used)
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principal key expires (not used)
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max ticket life
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max renewable life
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flags
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generation number
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*/
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static krb5_error_code
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append_string(krb5_context context, krb5_storage *sp, const char *fmt, ...)
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{
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krb5_error_code ret;
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char *s;
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va_list ap;
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va_start(ap, fmt);
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vasprintf(&s, fmt, ap);
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va_end(ap);
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if(s == NULL) {
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krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
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return ENOMEM;
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}
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ret = krb5_storage_write(sp, s, strlen(s));
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free(s);
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return ret;
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}
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static krb5_error_code
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append_hex(krb5_context context, krb5_storage *sp, krb5_data *data)
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{
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int printable = 1;
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size_t i;
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char *p;
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p = data->data;
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for(i = 0; i < data->length; i++)
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if(!isalnum((unsigned char)p[i]) && p[i] != '.'){
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printable = 0;
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break;
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}
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if(printable)
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return append_string(context, sp, "\"%.*s\"",
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data->length, data->data);
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hex_encode(data->data, data->length, &p);
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append_string(context, sp, "%s", p);
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free(p);
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return 0;
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}
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static char *
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time2str(time_t t)
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{
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static char buf[128];
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strftime(buf, sizeof(buf), "%Y%m%d%H%M%S", gmtime(&t));
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return buf;
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}
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static krb5_error_code
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append_event(krb5_context context, krb5_storage *sp, Event *ev)
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{
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char *pr = NULL;
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krb5_error_code ret;
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if(ev == NULL)
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return append_string(context, sp, "- ");
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if (ev->principal != NULL) {
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ret = krb5_unparse_name(context, ev->principal, &pr);
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if(ret)
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return ret;
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}
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ret = append_string(context, sp, "%s:%s ",
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time2str(ev->time), pr ? pr : "UNKNOWN");
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free(pr);
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return ret;
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}
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static krb5_error_code
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entry2string_int (krb5_context context, krb5_storage *sp, hdb_entry *ent)
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{
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char *p;
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size_t i;
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krb5_error_code ret;
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/* --- principal */
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ret = krb5_unparse_name(context, ent->principal, &p);
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if(ret)
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return ret;
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append_string(context, sp, "%s ", p);
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free(p);
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/* --- kvno */
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append_string(context, sp, "%d", ent->kvno);
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/* --- keys */
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for(i = 0; i < ent->keys.len; i++){
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/* --- mkvno, keytype */
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if(ent->keys.val[i].mkvno)
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append_string(context, sp, ":%d:%d:",
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*ent->keys.val[i].mkvno,
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ent->keys.val[i].key.keytype);
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else
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append_string(context, sp, "::%d:",
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ent->keys.val[i].key.keytype);
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/* --- keydata */
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append_hex(context, sp, &ent->keys.val[i].key.keyvalue);
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append_string(context, sp, ":");
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/* --- salt */
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if(ent->keys.val[i].salt){
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append_string(context, sp, "%u/", ent->keys.val[i].salt->type);
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append_hex(context, sp, &ent->keys.val[i].salt->salt);
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}else
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append_string(context, sp, "-");
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}
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append_string(context, sp, " ");
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/* --- created by */
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append_event(context, sp, &ent->created_by);
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/* --- modified by */
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append_event(context, sp, ent->modified_by);
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/* --- valid start */
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if(ent->valid_start)
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append_string(context, sp, "%s ", time2str(*ent->valid_start));
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else
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append_string(context, sp, "- ");
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/* --- valid end */
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if(ent->valid_end)
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append_string(context, sp, "%s ", time2str(*ent->valid_end));
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else
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append_string(context, sp, "- ");
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/* --- password ends */
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if(ent->pw_end)
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append_string(context, sp, "%s ", time2str(*ent->pw_end));
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else
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append_string(context, sp, "- ");
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/* --- max life */
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if(ent->max_life)
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append_string(context, sp, "%d ", *ent->max_life);
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else
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append_string(context, sp, "- ");
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/* --- max renewable life */
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if(ent->max_renew)
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append_string(context, sp, "%d ", *ent->max_renew);
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else
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append_string(context, sp, "- ");
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/* --- flags */
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append_string(context, sp, "%d ", HDBFlags2int(ent->flags));
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/* --- generation number */
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if(ent->generation) {
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append_string(context, sp, "%s:%d:%d ", time2str(ent->generation->time),
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ent->generation->usec,
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ent->generation->gen);
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} else
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append_string(context, sp, "- ");
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/* --- extensions */
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if(ent->extensions && ent->extensions->len > 0) {
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for(i = 0; i < ent->extensions->len; i++) {
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void *d;
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size_t size, sz = 0;
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ASN1_MALLOC_ENCODE(HDB_extension, d, size,
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&ent->extensions->val[i], &sz, ret);
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if (ret) {
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krb5_clear_error_message(context);
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return ret;
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}
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if(size != sz)
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krb5_abortx(context, "internal asn.1 encoder error");
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if (hex_encode(d, size, &p) < 0) {
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free(d);
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krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
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return ENOMEM;
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}
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free(d);
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append_string(context, sp, "%s%s", p,
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ent->extensions->len - 1 != i ? ":" : "");
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free(p);
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}
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} else
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append_string(context, sp, "-");
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return 0;
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}
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krb5_error_code
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hdb_entry2string (krb5_context context, hdb_entry *ent, char **str)
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{
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krb5_error_code ret;
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krb5_data data;
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krb5_storage *sp;
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sp = krb5_storage_emem();
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if(sp == NULL) {
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krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
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return ENOMEM;
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}
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ret = entry2string_int(context, sp, ent);
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if(ret) {
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krb5_storage_free(sp);
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return ret;
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}
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krb5_storage_write(sp, "\0", 1);
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krb5_storage_to_data(sp, &data);
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krb5_storage_free(sp);
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*str = data.data;
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return 0;
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}
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/* print a hdb_entry to (FILE*)data; suitable for hdb_foreach */
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krb5_error_code
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hdb_print_entry(krb5_context context, HDB *db, hdb_entry_ex *entry, void *data)
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{
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krb5_error_code ret;
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krb5_storage *sp;
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FILE *f = data;
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fflush(f);
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sp = krb5_storage_from_fd(fileno(f));
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if(sp == NULL) {
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krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
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return ENOMEM;
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}
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ret = entry2string_int(context, sp, &entry->entry);
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if(ret) {
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krb5_storage_free(sp);
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return ret;
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}
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krb5_storage_write(sp, "\n", 1);
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krb5_storage_free(sp);
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return 0;
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}
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