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ratatoskr-messenger/server/kstuff.c

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/* This file is part of the Project Athena Zephyr Notification System.
* It contains functions for dealing with Kerberos functions in the server.
*
* Created by: John T Kohl
*
* Copyright (c) 1988 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
/*
* $Source$
* $Header$
*/
#include "zserver.h"
#ifndef lint
#ifndef SABER
static const char rcsid_kstuff_c[] = "$Id$";
#endif
#endif
#if defined(HAVE_KRB4) && defined(HAVE_KRB5)
static Code_t ZCheckAuthentication4(ZNotice_t *notice, struct sockaddr_in *from);
#endif
#ifdef HAVE_KRB5
static ZChecksum_t compute_checksum(ZNotice_t *, unsigned char *);
static ZChecksum_t compute_rlm_checksum(ZNotice_t *, unsigned char *);
#endif
#ifdef HAVE_KRB4
/*
* GetKerberosData
*
* get ticket from file descriptor and decode it.
* Return KFAILURE if we barf on reading the ticket, else return
* the value of rd_ap_req() applied to the ticket.
*/
int
GetKerberosData(int fd, /* file descr. to read from */
struct in_addr haddr, /* address of foreign host on fd */
AUTH_DAT *kdata, /* kerberos data (returned) */
char *service, /* service principal desired */
char *srvtab) /* file to get keys from */
{
char p[20];
KTEXT_ST ticket; /* will get Kerberos ticket from client */
unsigned int i;
char instance[INST_SZ];
/*
* Get the Kerberos ticket. The first few characters, terminated
* by a blank, should give us a length; then get than many chars
* which will be the ticket proper.
*/
for (i=0; i<20; i++) {
if (read(fd, &p[i], 1) != 1) {
syslog(LOG_WARNING,"bad read tkt len");
return(KFAILURE);
}
if (p[i] == ' ') {
p[i] = '\0';
break;
}
}
ticket.length = atoi(p);
if ((i==20) || (ticket.length<=0) || (ticket.length>MAX_KTXT_LEN)) {
syslog(LOG_WARNING,"bad tkt len %d",ticket.length);
return(KFAILURE);
}
for (i=0; i<ticket.length; i++) {
if (read(fd, &ticket.dat[i], 1) != 1) {
syslog(LOG_WARNING,"bad tkt read");
return(KFAILURE);
}
}
/*
* now have the ticket. use it to get the authenticated
* data from Kerberos.
*/
(void) strcpy(instance,"*"); /* let Kerberos fill it in */
return(krb_rd_req(&ticket, service, instance, haddr.s_addr,
kdata, srvtab ? srvtab : ""));
}
/*
* SendKerberosData
*
* create and transmit a ticket over the file descriptor for service.host
* return failure codes if appropriate, or 0 if we
* get the ticket and write it to the file descriptor
*/
#if !defined(krb_err_base) && defined(ERROR_TABLE_BASE_krb)
#define krb_err_base ERROR_TABLE_BASE_krb
#endif
Code_t
SendKerberosData(int fd, /* file descriptor to write onto */
KTEXT ticket, /* where to put ticket (return) */
char *service, /* service name, foreign host */
char *host)
{
int rem;
char p[32];
size_t written;
size_t size_to_write;
rem = krb_mk_req(ticket, service, host, (char *)ZGetRealm(), (u_long) 0);
if (rem != KSUCCESS)
return rem + krb_err_base;
(void) sprintf(p,"%d ",ticket->length);
size_to_write = strlen (p);
if ((written = write(fd, p, size_to_write)) != size_to_write)
return ((ssize_t)written < 0) ? errno : ZSRV_PKSHORT;
if ((written = write(fd, ticket->dat, ticket->length))
!= ticket->length)
return ((ssize_t)written < 0) ? errno : ZSRV_PKSHORT;
return 0;
}
#endif /* HAVE_KRB4 */
#if defined(HAVE_KRB5) || defined(HAVE_KRB4)
Code_t
ReadKerberosData(int fd, int *size, char **data, int *proto) {
char p[20];
int i;
char *dst;
int len = 0;
for (i=0; i<20; i++) {
if (read(fd, &p[i], 1) != 1) {
p[i] = 0;
syslog(LOG_WARNING,"ReadKerberosData: bad read reply len @%d (got \"%s\"", i, p);
return ZSRV_LEN;
}
if (p[i] == ' ') {
p[i] = '\0';
break;
}
}
if (i == 20) {
syslog(LOG_WARNING, "ReadKerberosData: read reply len exceeds buffer");
return ZSRV_BUFSHORT;
}
if (!strncmp(p, "V5-", 3) && (len = atoi(p+3)) > 0)
*proto = 5;
else if ((len = atoi(p)) > 0)
*proto = 4;
if ((*proto < 4) | (*proto > 5)) {
syslog(LOG_WARNING, "ReadKerberosData: error parsing authenticator length (\"%s\")", p);
return ZSRV_LEN;
}
if (len <= 0) {
syslog(LOG_WARNING, "ReadKerberosData: read reply len = %d", len);
return ZSRV_LEN;
}
*data = malloc(len);
if (! *data) {
syslog(LOG_WARNING, "ReadKerberosData: failure allocating %d bytes: %m", len);
return errno;
}
dst=*data;
for (i=0; i < len; i++) {
if (read(fd, dst++, 1) != 1) {
free(*data);
*data = NULL;
*size = 0;
syslog(LOG_WARNING,"ReadKerberosData: bad read reply string");
return ZSRV_PKSHORT;
}
}
*size = len;
return 0;
}
#endif
#ifdef HAVE_KRB5
Code_t
GetKrb5Data(int fd, krb5_data *data) {
char p[20];
unsigned int i;
char *dst;
for (i=0; i<20; i++) {
if (read(fd, &p[i], 1) != 1) {
p[i] = 0;
syslog(LOG_WARNING,"bad read reply len @%d (got \"%s\")", i, p);
return ZSRV_LEN;
}
if (p[i] == ' ') {
p[i] = '\0';
break;
}
}
if (i == 20 || strncmp(p, "V5-", 3) || !atoi(p+3)) {
syslog(LOG_WARNING,"bad reply len");
return ZSRV_LEN;
}
data->length = atoi(p+3);
data->data = malloc(data->length);
if (! data->data) {
data->length = 0;
return errno;
}
dst=data->data;
for (i=0; i < data->length; i++) {
if (read(fd, dst++, 1) != 1) {
free(data->data);
memset((char *)data, 0, sizeof(krb5_data));
syslog(LOG_WARNING,"bad read reply string");
return ZSRV_PKSHORT;
}
}
return 0;
}
Code_t
SendKrb5Data(int fd, krb5_data *data) {
char p[32];
size_t written, size_to_write;
sprintf(p, "V5-%lu ", (unsigned long)data->length);
size_to_write = strlen (p);
if (size_to_write != (written = write(fd, p, size_to_write)) ||
data->length != (written = write(fd, data->data, data->length))) {
return ((ssize_t)written < 0) ? errno : ZSRV_PKSHORT;
}
return 0;
}
#endif
Code_t
ZCheckSrvAuthentication(ZNotice_t *notice,
struct sockaddr_in *from,
char *realm)
{
#ifdef HAVE_KRB5
unsigned char *authbuf;
krb5_principal princ;
krb5_data packet;
krb5_ticket *tkt;
char *name;
krb5_error_code result;
krb5_principal server;
krb5_keytab keytabid = 0;
krb5_auth_context authctx;
krb5_keyblock *keyblock;
krb5_enctype enctype;
krb5_cksumtype cksumtype;
krb5_data cksumbuf;
int valid;
char *cksum0_base, *cksum1_base = NULL, *cksum2_base;
char *x;
unsigned char *asn1_data, *key_data, *cksum_data;
int asn1_len, key_len, cksum0_len = 0, cksum1_len = 0, cksum2_len = 0;
KRB5_AUTH_CON_FLAGS_TYPE acflags;
#ifdef KRB5_AUTH_CON_GETAUTHENTICATOR_TAKES_DOUBLE_POINTER
krb5_authenticator *authenticator;
#define KRB5AUTHENT authenticator
#else
krb5_authenticator authenticator;
#define KRB5AUTHENT &authenticator
#endif
int len;
char *sender;
char rlmprincipal[MAX_PRINCIPAL_SIZE];
if (!notice->z_auth)
return ZAUTH_NO;
/* Check for bogus authentication data length. */
if (notice->z_authent_len <= 0) {
syslog(LOG_DEBUG, "ZCheckSrvAuthentication: bogus authenticator length");
return ZAUTH_FAILED;
}
#ifdef HAVE_KRB4
if (notice->z_ascii_authent[0] != 'Z' && realm == NULL)
return ZCheckAuthentication4(notice, from);
#endif
len = strlen(notice->z_ascii_authent)+1;
authbuf = malloc(len);
/* Read in the authentication data. */
if (ZReadZcode((unsigned char *)notice->z_ascii_authent,
authbuf,
len, &len) == ZERR_BADFIELD) {
syslog(LOG_DEBUG, "ZCheckSrvAuthentication: ZReadZcode: Improperly formatted field");
return ZAUTH_FAILED;
}
if (realm == NULL) {
sender = notice->z_sender;
} else {
(void) snprintf(rlmprincipal, MAX_PRINCIPAL_SIZE, "%s/%s@%s", SERVER_SERVICE,
SERVER_INSTANCE, realm);
sender = rlmprincipal;
}
packet.length = len;
packet.data = (char *)authbuf;
result = krb5_kt_resolve(Z_krb5_ctx,
keytab_file, &keytabid);
if (result) {
free(authbuf);
syslog(LOG_DEBUG, "ZCheckSrvAuthentication: krb5_kt_resolve: %s", error_message(result));
return ZAUTH_FAILED;
}
/* HOLDING: authbuf, keytabid */
/* Create the auth context */
result = krb5_auth_con_init(Z_krb5_ctx, &authctx);
if (result) {
krb5_kt_close(Z_krb5_ctx, keytabid);
free(authbuf);
syslog(LOG_DEBUG, "ZCheckSrvAuthentication: krb5_auth_con_init: %s", error_message(result));
return ZAUTH_FAILED;
}
/* HOLDING: authbuf, keytabid, authctx */
result = krb5_auth_con_getflags(Z_krb5_ctx, authctx, &acflags);
if (result) {
krb5_auth_con_free(Z_krb5_ctx, authctx);
krb5_kt_close(Z_krb5_ctx, keytabid);
free(authbuf);
syslog(LOG_DEBUG, "ZCheckSrvAuthentication: krb5_auth_con_getflags: %s", error_message(result));
return ZAUTH_FAILED;
}
acflags &= ~KRB5_AUTH_CONTEXT_DO_TIME;
result = krb5_auth_con_setflags(Z_krb5_ctx, authctx, acflags);
if (result) {
krb5_auth_con_free(Z_krb5_ctx, authctx);
krb5_kt_close(Z_krb5_ctx, keytabid);
free(authbuf);
syslog(LOG_DEBUG, "ZCheckSrvAuthentication: krb5_auth_con_setflags: %s", error_message(result));
return ZAUTH_FAILED;
}
result = krb5_build_principal(Z_krb5_ctx, &server, strlen(__Zephyr_realm),
__Zephyr_realm, SERVER_SERVICE,
SERVER_INSTANCE, NULL);
if (!result) {
result = krb5_rd_req(Z_krb5_ctx, &authctx, &packet, server,
keytabid, NULL, &tkt);
krb5_free_principal(Z_krb5_ctx, server);
}
krb5_kt_close(Z_krb5_ctx, keytabid);
/* HOLDING: authbuf, authctx */
if (result) {
if (result == KRB5KRB_AP_ERR_REPEAT)
syslog(LOG_DEBUG, "ZCheckSrvAuthentication: k5 auth failed: %s",
error_message(result));
else
syslog(LOG_WARNING,"ZCheckSrvAuthentication: k5 auth failed: %s",
error_message(result));
free(authbuf);
krb5_auth_con_free(Z_krb5_ctx, authctx);
return ZAUTH_FAILED;
}
/* HOLDING: authbuf, authctx, tkt */
if (tkt == 0 || !Z_tktprincp(tkt)) {
if (tkt)
krb5_free_ticket(Z_krb5_ctx, tkt);
free(authbuf);
krb5_auth_con_free(Z_krb5_ctx, authctx);
syslog(LOG_WARNING, "ZCheckSrvAuthentication: No Ticket");
return ZAUTH_FAILED;
}
princ = Z_tktprinc(tkt);
if (princ == 0) {
krb5_free_ticket(Z_krb5_ctx, tkt);
free(authbuf);
krb5_auth_con_free(Z_krb5_ctx, authctx);
syslog(LOG_WARNING, "ZCheckSrvAuthentication: No... Ticket?");
return ZAUTH_FAILED;
}
/* HOLDING: authbuf, authctx, tkt */
result = krb5_unparse_name(Z_krb5_ctx, princ, &name);
if (result) {
syslog(LOG_WARNING, "ZCheckSrvAuthentication: krb5_unparse_name failed: %s",
error_message(result));
free(authbuf);
krb5_auth_con_free(Z_krb5_ctx, authctx);
krb5_free_ticket(Z_krb5_ctx, tkt);
return ZAUTH_FAILED;
}
krb5_free_ticket(Z_krb5_ctx, tkt);
/* HOLDING: authbuf, authctx, name */
if (strcmp(name, sender)) {
syslog(LOG_WARNING, "ZCheckSrvAuthentication: name mismatch: '%s' vs '%s'",
name, sender);
krb5_auth_con_free(Z_krb5_ctx, authctx);
#ifdef HAVE_KRB5_FREE_UNPARSED_NAME
krb5_free_unparsed_name(Z_krb5_ctx, name);
#else
free(name);
#endif
free(authbuf);
return ZAUTH_FAILED;
}
#ifdef HAVE_KRB5_FREE_UNPARSED_NAME
krb5_free_unparsed_name(Z_krb5_ctx, name);
#else
free(name);
#endif
free(authbuf);
/* HOLDING: authctx */
/* Get an authenticator so we can get the keyblock */
result = krb5_auth_con_getauthenticator (Z_krb5_ctx, authctx,
&authenticator);
if (result) {
krb5_auth_con_free(Z_krb5_ctx, authctx);
syslog(LOG_WARNING, "ZCheckSrvAuthentication: krb5_auth_con_getauthenticator failed: %s",
error_message(result));
return ZAUTH_FAILED;
}
/* HOLDING: authctx, authenticator */
result = krb5_auth_con_getkey(Z_krb5_ctx, authctx, &keyblock);
krb5_auth_con_free(Z_krb5_ctx, authctx);
krb5_free_authenticator(Z_krb5_ctx, KRB5AUTHENT);
if (result) {
syslog(LOG_WARNING, "ZCheckSrvAuthentication: krb5_auth_con_getkey failed: %s",
error_message(result));
return (ZAUTH_FAILED);
}
/* HOLDING: keyblock */
/* Figure out what checksum type to use */
key_data = Z_keydata(keyblock);
key_len = Z_keylen(keyblock);
result = Z_ExtractEncCksum(keyblock, &enctype, &cksumtype);
if (result) {
krb5_free_keyblock(Z_krb5_ctx, keyblock);
syslog(LOG_WARNING, "ZCheckSrvAuthentication: Z_ExtractEncCksum failed: %s",
error_message(result));
return (ZAUTH_FAILED);
}
/* HOLDING: keyblock */
if (realm == NULL)
ZSetSession(keyblock);
/* Assemble the things to be checksummed */
/* first part is from start of packet through z_default_format:
* - z_version
* - z_num_other_fields
* - z_kind
* - z_uid
* - z_port
* - z_auth
* - z_authent_len
* - z_ascii_authent
* - z_class
* - z_class_inst
* - z_opcode
* - z_sender
* - z_recipient
* - z_default_format
*/
cksum0_base = notice->z_packet;
x = notice->z_default_format;
cksum0_len = x + strlen(x) + 1 - cksum0_base;
/* second part is from z_multinotice through other fields:
* - z_multinotice
* - z_multiuid
* - z_sender_(sock)addr
* - z_charset
* - z_other_fields[]
*/
if (notice->z_num_hdr_fields > 15 ) {
cksum1_base = notice->z_multinotice;
if (notice->z_num_other_fields)
x = notice->z_other_fields[notice->z_num_other_fields - 1];
else {
/* see lib/ZCkZaut.c:ZCheckZcodeAuthentication */
/* XXXXXXXXXXXXXXXXXXXXXXX */
if (notice->z_num_hdr_fields > 16)
x = cksum1_base + strlen(cksum1_base) + 1; /* multinotice */
if (notice->z_num_hdr_fields > 17)
x = x + strlen(x) + 1; /* multiuid */
if (notice->z_num_hdr_fields > 18)
x = x + strlen(x) + 1; /* sender */
}
cksum1_len = x + strlen(x) + 1 - cksum1_base; /* charset / extra field */
}
/* last part is the message body */
cksum2_base = notice->z_message;
cksum2_len = notice->z_message_len;
/*XXX we may wish to ditch this code someday?*/
if ((!notice->z_ascii_checksum || *notice->z_ascii_checksum != 'Z') &&
key_len == 8 &&
(enctype == (krb5_enctype)ENCTYPE_DES_CBC_CRC ||
enctype == (krb5_enctype)ENCTYPE_DES_CBC_MD4 ||
enctype == (krb5_enctype)ENCTYPE_DES_CBC_MD5)) {
/* try old-format checksum (covers cksum0 only) */
ZChecksum_t our_checksum;
if (realm == NULL)
our_checksum = compute_checksum(notice, key_data);
else
our_checksum = compute_rlm_checksum(notice, key_data);
krb5_free_keyblock(Z_krb5_ctx, keyblock);
if (our_checksum == notice->z_checksum) {
return ZAUTH_YES;
} else {
syslog(LOG_DEBUG, "ZCheckSrvAuthentication: des quad checksum mismatch");
return ZAUTH_FAILED;
}
}
/* HOLDING: keyblock */
cksumbuf.length = cksum0_len + cksum1_len + cksum2_len;
cksumbuf.data = malloc(cksumbuf.length);
if (!cksumbuf.data) {
krb5_free_keyblock(Z_krb5_ctx, keyblock);
syslog(LOG_ERR, "ZCheckSrvAuthentication: malloc(cksumbuf.data): %m");
return ZAUTH_FAILED;
}
/* HOLDING: keyblock, cksumbuf.data */
cksum_data = (unsigned char *)cksumbuf.data;
memcpy(cksum_data, cksum0_base, cksum0_len);
if (cksum1_len)
memcpy(cksum_data + cksum0_len, cksum1_base, cksum1_len);
memcpy(cksum_data + cksum0_len + cksum1_len,
cksum2_base, cksum2_len);
/* decode zcoded checksum */
/* The encoded form is always longer than the original */
asn1_len = strlen(notice->z_ascii_checksum) + 1;
asn1_data = malloc(asn1_len);
if (!asn1_data) {
krb5_free_keyblock(Z_krb5_ctx, keyblock);
free(cksumbuf.data);
syslog(LOG_ERR, "ZCheckSrvAuthentication: malloc(asn1_data): %m");
return ZAUTH_FAILED;
}
/* HOLDING: keyblock, cksumbuf.data, asn1_data */
result = ZReadZcode((unsigned char *)notice->z_ascii_checksum,
asn1_data, asn1_len, &asn1_len);
if (result != ZERR_NONE) {
krb5_free_keyblock(Z_krb5_ctx, keyblock);
free(asn1_data);
free(cksumbuf.data);
syslog(LOG_WARNING, "ZCheckSrvAuthentication: ZReadZcode: %s",
error_message(result));
return ZAUTH_FAILED;
}
/* HOLDING: asn1_data, cksumbuf.data */
valid = Z_krb5_verify_cksum(keyblock, &cksumbuf, cksumtype,
Z_KEYUSAGE_CLT_CKSUM,
asn1_data, asn1_len);
/* XXX compatibility with unreleased interrealm krb5; drop in 3.1 */
if (!valid && realm)
valid = Z_krb5_verify_cksum(keyblock, &cksumbuf, cksumtype,
Z_KEYUSAGE_SRV_CKSUM,
asn1_data, asn1_len);
free(asn1_data);
krb5_free_keyblock(Z_krb5_ctx, keyblock);
free(cksumbuf.data);
if (valid) {
return ZAUTH_YES;
} else {
syslog(LOG_DEBUG, "ZCheckSrvAuthentication: Z_krb5_verify_cksum: failed");
return ZAUTH_FAILED;
}
#else
return (notice->z_auth) ? ZAUTH_YES : ZAUTH_NO;
#endif
}
#undef KRB5AUTHENT
#if defined(HAVE_KRB4) && defined(HAVE_KRB5)
static Code_t
ZCheckAuthentication4(ZNotice_t *notice,
struct sockaddr_in *from)
{
int result;
char srcprincipal[ANAME_SZ+INST_SZ+REALM_SZ+4];
KTEXT_ST authent;
AUTH_DAT dat;
ZChecksum_t checksum;
char instance[INST_SZ+1];
if (!notice->z_auth)
return ZAUTH_NO;
/* Check for bogus authentication data length. */
if (notice->z_authent_len <= 0)
return ZAUTH_FAILED;
/* Read in the authentication data. */
if (ZReadAscii(notice->z_ascii_authent,
strlen(notice->z_ascii_authent)+1,
(unsigned char *)authent.dat,
notice->z_authent_len) == ZERR_BADFIELD) {
return ZAUTH_FAILED;
}
authent.length = notice->z_authent_len;
strcpy(instance, SERVER_INSTANCE);
/* We don't have the session key cached; do it the long way. */
result = krb_rd_req(&authent, SERVER_SERVICE, instance,
from->sin_addr.s_addr, &dat, srvtab_file);
if (result == RD_AP_OK) {
ZSetSessionDES(&dat.session);
sprintf(srcprincipal, "%s%s%s@%s", dat.pname, dat.pinst[0] ? "." : "",
dat.pinst, dat.prealm);
if (strcmp(srcprincipal, notice->z_sender))
return ZAUTH_FAILED;
} else {
return ZAUTH_FAILED; /* didn't decode correctly */
}
/* Check the cryptographic checksum. */
checksum = compute_checksum(notice, dat.session);
if (checksum != notice->z_checksum)
return ZAUTH_FAILED;
return ZAUTH_YES;
}
#endif
#ifdef HAVE_KRB5
static ZChecksum_t
compute_checksum(ZNotice_t *notice,
unsigned char *session_key)
{
ZChecksum_t checksum;
char *cstart, *cend, *hstart = notice->z_packet, *hend = notice->z_message;
cstart = notice->z_default_format + strlen(notice->z_default_format) + 1;
cend = cstart + strlen(cstart) + 1;
checksum = z_quad_cksum((unsigned char *)hstart, NULL, cstart - hstart, 0, session_key);
checksum ^= z_quad_cksum((unsigned char *)cend, NULL, hend - cend, 0, session_key);
checksum ^= z_quad_cksum((unsigned char *)notice->z_message, NULL, notice->z_message_len,
0, session_key);
return checksum;
}
static ZChecksum_t compute_rlm_checksum(ZNotice_t *notice,
unsigned char *session_key)
{
ZChecksum_t checksum;
char *cstart, *hstart = notice->z_packet;
cstart = notice->z_default_format + strlen(notice->z_default_format) + 1;
checksum = z_quad_cksum((unsigned char *)hstart, NULL,
cstart - hstart, 0, session_key);
return checksum;
}
#endif
#ifdef HAVE_KRB5
krb5_error_code
Z_krb5_init_keyblock(krb5_context context,
krb5_enctype type,
size_t size,
krb5_keyblock **key)
{
#ifdef HAVE_KRB5_CREDS_KEYBLOCK_ENCTYPE
return krb5_init_keyblock(context, type, size, key);
#else
krb5_error_code ret;
krb5_keyblock *tmp, tmp_ss;
tmp = &tmp_ss;
*key = NULL;
Z_enctype(tmp) = type;
Z_keylen(tmp) = size;
Z_keydata(tmp) = malloc(size);
if (!Z_keydata(tmp))
return ENOMEM;
ret = krb5_copy_keyblock(context, tmp, key);
free(Z_keydata(tmp));
return ret;
#endif
}
void
ZSetSession(krb5_keyblock *keyblock) {
krb5_error_code result;
if (__Zephyr_keyblock) {
krb5_free_keyblock_contents(Z_krb5_ctx, __Zephyr_keyblock);
result = krb5_copy_keyblock_contents(Z_krb5_ctx, keyblock, __Zephyr_keyblock);
} else {
result = krb5_copy_keyblock(Z_krb5_ctx, keyblock, &__Zephyr_keyblock);
}
if (result) /*XXX we're out of memory? */
return;
}
#endif
#ifdef HAVE_KRB4
void
ZSetSessionDES(C_Block *key) {
#ifdef HAVE_KRB5
Code_t result;
if (__Zephyr_keyblock) {
krb5_free_keyblock(Z_krb5_ctx, __Zephyr_keyblock);
__Zephyr_keyblock=NULL;
}
result = Z_krb5_init_keyblock(Z_krb5_ctx, ENCTYPE_DES_CBC_CRC,
sizeof(C_Block),
&__Zephyr_keyblock);
if (result) /*XXX we're out of memory? */
return;
memcpy(Z_keydata(__Zephyr_keyblock), key, sizeof(C_Block));
#else
memcpy(__Zephyr_session, key, sizeof(C_Block));
#endif
}
#endif
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