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/*
* $Source$
* $Author$
*
* Copyright 1990,1991 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
* krb_rd_req for krb425
*/
#if !defined(lint) && !defined(SABER)
static char rcsid_rd_req_c[] =
"$Id$";
#endif /* !lint & !SABER */
#include "krb425.h"
#include <sys/param.h>
static krb5_error_code
setkey_key_proc(DECLARG(krb5_pointer,arg),
DECLARG(krb5_principal,princ),
DECLARG(krb5_kvno,kvno),
DECLARG(krb5_keyblock **,retkey))
OLDDECLARG(krb5_pointer,arg)
OLDDECLARG(krb5_principal,princ)
OLDDECLARG(krb5_kvno,kvno)
OLDDECLARG(krb5_keyblock **,retkey)
{
return krb5_copy_keyblock(&_krb425_servkey, retkey);
}
int
krb_rd_req(authent, service, instance, from_addr, ad, fn)
KTEXT authent;
char *service;
char *instance;
u_long from_addr;
AUTH_DAT *ad;
char *fn;
{
krb5_address peer;
krb5_tkt_authent *authdat;
char addr[4];
krb5_principal server;
krb5_error_code r;
krb5_data authe;
extern int gethostname();
int use_set_key = 0;
char file_name[MAXPATHLEN];
if (from_addr) {
peer.addrtype = ADDRTYPE_INET;
peer.length = 4;
peer.contents = (krb5_octet *)addr;
memcpy(addr, (char *)&from_addr + (sizeof(from_addr) - 4), 4);
}
if (!_krb425_local_realm)
if (r = krb5_get_default_realm(&_krb425_local_realm))
return(krb425error(r));
if (!strcmp(instance, "*")) {
static char hostname[64] = { 0 };
if (!hostname[0]) {
struct hostent *h;
gethostname(hostname, sizeof(hostname));
if (h = gethostbyname(hostname)) {
char *p;
strncpy(hostname, h->h_name, sizeof(hostname));
hostname[sizeof(hostname)-1] = 0;
p = hostname;
do {
if (isupper(*p)) *p=tolower(*p);
} while (*p++);
}
}
instance = hostname;
}
if (r = krb5_build_principal(&server,
strlen(_krb425_local_realm),
_krb425_local_realm,
service,
instance,
0)) {
return(krb425error(r));
}
authe.length = authent->length;
authe.data = (char *)authent->dat;
if (!fn) {
use_set_key = 1;
fn = (char *)0;
} else if (!*fn) {
fn = (char *)0;
} else {
strcpy(file_name, "FILE:");
strncpy(file_name + 5, fn, MAXPATHLEN-5);
file_name[sizeof(file_name)-1] = '\0';
fn = file_name;
}
#ifdef EBUG
EPRINT "Calling krb5_rd_req with:\n");
EPRINT " Realm : "); show5(srvdata[0]); ENEWLINE
EPRINT " Service : "); show5(srvdata[1]); ENEWLINE
EPRINT " Instance: "); show5(srvdata[2]); ENEWLINE
EPRINT "Authenenticator : %d bytes\n", authe.length);
EPRINT "Filename : %s\n", fn ? fn : "none given");
if (from_addr) {
EPRINT "Address type : %s\n",
peer.addrtype == ADDRTYPE_INET ? "inet" :
peer.addrtype == ADDRTYPE_CHAOS ? "chaos" :
peer.addrtype == ADDRTYPE_XNS ? "xns" :
peer.addrtype == ADDRTYPE_ISO ? "iso" :
peer.addrtype == ADDRTYPE_DDP ? "ddp" : "unknown type");
EPRINT "Address length : %d\n", peer.length);
EPRINT "Address :");
{
int x;
for (x = 0; x < peer.length && x < 8; ++x)
fprintf(stderr, " %d", peer.contents[x]);
if (x < peer.length)
fprintf(stderr, " (%d)", peer.length);
fprintf(stderr, "\n");
}
}
#endif
/* ? : will break some compilers when dealing with function pointers */
if (use_set_key)
r = krb5_rd_req(&authe,
server,
from_addr ? &peer : 0,
fn, setkey_key_proc,
0, 0, &authdat);
else
r = krb5_rd_req(&authe,
server,
from_addr ? &peer : 0,
fn, 0,
0, 0, &authdat);
krb5_free_principal(server);
if (r) {
#ifdef EBUG
ERROR(r)
#endif
return(krb425error(r));
}
ad->k_flags = 0;
#ifdef EBUG
r = 0;
while (authdat->authenticator->client[r]) {
EPRINT "Client[%d]: ", r); show5((*authdat->authenticator->client[r])); ENEWLINE
++r;
}
r = 0;
while (authdat->ticket->server[r]) {
EPRINT "Server[%d]: ", r); show5((*authdat->ticket->server[r])); ENEWLINE
++r;
}
r = 0;
#endif
set_string(ad->pname, ANAME_SZ,
krb5_princ_component(authdat->authenticator->client, 0));
if (authdat->authenticator->client->length > 1) {
set_string(ad->pinst, INST_SZ,
krb5_princ_component(authdat->authenticator->client,
1));
}
else {
ad->pinst[0] = '\0';
}
set_string(ad->prealm, REALM_SZ,
krb5_princ_realm(authdat->authenticator->client));
ad->checksum = *(long *)authdat->authenticator->checksum->contents;
if (authdat->ticket->enc_part2->session->keytype != KEYTYPE_DES) {
r = KFAILURE;
goto out;
} else
memcpy((char*)ad->session,
(char*)authdat->ticket->enc_part2->session->contents,
sizeof(C_Block));
ad->life = authdat->ticket->enc_part2->times.endtime;
ad->time_sec = authdat->authenticator->ctime;
ad->address = 0;
if (authdat->ticket->enc_part2->caddrs[0]->addrtype != ADDRTYPE_INET) {
r = KFAILURE;
goto out;
} else
memcpy((char*)&ad->address + sizeof(ad->address) - 4,
(char*)authdat->ticket->enc_part2->caddrs[0]->contents, 4);
if (authdat->ticket->enc_part2->authorization_data &&
authdat->ticket->enc_part2->authorization_data[0]) {
ad->reply.length = authdat->ticket->enc_part2->authorization_data[0]->length;
memcpy((char*)ad->reply.dat,
(char*)authdat->ticket->enc_part2->authorization_data[0]->contents,
min(ad->reply.length, MAX_KTXT_LEN));
ad->reply.mbz = 0;
}
out:
krb5_free_tkt_authent(authdat);
return(r);
}
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