diff options
Diffstat (limited to 'crypto/heimdal/lib/45/mk_req.c')
| -rw-r--r-- | crypto/heimdal/lib/45/mk_req.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/45/mk_req.c b/crypto/heimdal/lib/45/mk_req.c new file mode 100644 index 0000000..7074ebf --- /dev/null +++ b/crypto/heimdal/lib/45/mk_req.c @@ -0,0 +1,130 @@ +/* + * Copyright (c) 1997 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. + */ + +/* implementation of krb_mk_req that uses 524 protocol */ + +#include "45_locl.h" + +RCSID("$Id: mk_req.c,v 1.2 1999/12/02 17:05:01 joda Exp $"); + +static int lifetime = 255; + +static void +build_request(KTEXT req, char *name, char *inst, char *realm, + u_int32_t checksum) +{ + struct timeval tv; + krb5_storage *sp; + krb5_data data; + sp = krb5_storage_emem(); + krb5_store_stringz(sp, name); + krb5_store_stringz(sp, inst); + krb5_store_stringz(sp, realm); + krb5_store_int32(sp, checksum); + gettimeofday(&tv, NULL); + krb5_store_int8(sp, tv.tv_usec / 5000); + krb5_store_int32(sp, tv.tv_sec); + krb5_storage_to_data(sp, &data); + krb5_storage_free(sp); + memcpy(req->dat, data.data, data.length); + req->length = (data.length + 7) & ~7; + krb5_data_free(&data); +} + +int +krb_mk_req(KTEXT authent, char *service, char *instance, char *realm, + int32_t checksum) +{ + CREDENTIALS cr; + KTEXT_ST req; + krb5_storage *sp; + int code; + char *myrealm; + krb5_data a; + + code = krb_get_cred(service, instance, realm, &cr); + if(code || time(NULL) > krb_life_to_time(cr.issue_date, cr.lifetime)){ + code = get_ad_tkt(service, instance, realm, lifetime); + if(code == KSUCCESS) + code = krb_get_cred(service, instance, realm, &cr); + } + + if(code) + return code; + + /* XXX get user realm */ + myrealm = realm; + + sp = krb5_storage_emem(); + + krb5_store_int8(sp, KRB_PROT_VERSION); + krb5_store_int8(sp, AUTH_MSG_APPL_REQUEST); + + krb5_store_int8(sp, cr.kvno); + krb5_store_stringz(sp, realm); + krb5_store_int8(sp, cr.ticket_st.length); + + build_request(&req, cr.pname, cr.pinst, myrealm, checksum); + encrypt_ktext(&req, &cr.session, DES_ENCRYPT); + + krb5_store_int8(sp, req.length); + + sp->store(sp, cr.ticket_st.dat, cr.ticket_st.length); + sp->store(sp, req.dat, req.length); + krb5_storage_to_data(sp, &a); + krb5_storage_free(sp); + memcpy(authent->dat, a.data, a.length); + authent->length = a.length; + krb5_data_free(&a); + + memset(&cr, 0, sizeof(cr)); + memset(&req, 0, sizeof(req)); + + return KSUCCESS; +} + +/* + * krb_set_lifetime sets the default lifetime for additional tickets + * obtained via krb_mk_req(). + * + * It returns the previous value of the default lifetime. + */ + +int +krb_set_lifetime(int newval) +{ + int olife = lifetime; + + lifetime = newval; + return(olife); +} |
