diff options
Diffstat (limited to 'crypto/kerberosIV/lib/krb/cr_err_reply.c')
| -rw-r--r-- | crypto/kerberosIV/lib/krb/cr_err_reply.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/crypto/kerberosIV/lib/krb/cr_err_reply.c b/crypto/kerberosIV/lib/krb/cr_err_reply.c new file mode 100644 index 0000000..3308529 --- /dev/null +++ b/crypto/kerberosIV/lib/krb/cr_err_reply.c @@ -0,0 +1,122 @@ +/* + * Copyright (c) 1995, 1996, 1997, 1998 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 "krb_locl.h" + +RCSID("$Id: cr_err_reply.c,v 1.11 1999/12/02 16:58:41 joda Exp $"); + +/* + * This routine is used by the Kerberos authentication server to + * create an error reply packet to send back to its client. + * + * It takes a pointer to the packet to be built, the name, instance, + * and realm of the principal, the client's timestamp, an error code + * and an error string as arguments. Its return value is undefined. + * + * The packet is built in the following format: + * + * type variable data + * or constant + * ---- ----------- ---- + * + * unsigned char req_ack_vno protocol version number + * + * unsigned char AUTH_MSG_ERR_REPLY protocol message type + * + * [least significant HOST_BYTE_ORDER sender's (server's) byte + * bit of above field] order + * + * string pname principal's name + * + * string pinst principal's instance + * + * string prealm principal's realm + * + * unsigned long time_ws client's timestamp + * + * unsigned long e error code + * + * string e_string error text + */ + +int +cr_err_reply(KTEXT pkt, char *pname, char *pinst, char *prealm, + u_int32_t time_ws, u_int32_t e, char *e_string) +{ + unsigned char *p = pkt->dat; + int tmp; + size_t rem = sizeof(pkt->dat); + + tmp = krb_put_int(KRB_PROT_VERSION, p, rem, 1); + if (tmp < 0) + return -1; + p += tmp; + rem -= tmp; + + tmp = krb_put_int(AUTH_MSG_ERR_REPLY, p, rem, 1); + if (tmp < 0) + return -1; + p += tmp; + rem -= tmp; + + if (pname == NULL) pname = ""; + if (pinst == NULL) pinst = ""; + if (prealm == NULL) prealm = ""; + + tmp = krb_put_nir(pname, pinst, prealm, p, rem); + if (tmp < 0) + return -1; + p += tmp; + rem -= tmp; + + tmp = krb_put_int(time_ws, p, rem, 4); + if (tmp < 0) + return -1; + p += tmp; + rem -= tmp; + + tmp = krb_put_int(e, p, rem, 4); + if (tmp < 0) + return -1; + p += tmp; + rem -= tmp; + + tmp = krb_put_string(e_string, p, rem); + if (tmp < 0) + return -1; + p += tmp; + rem -= tmp; + + pkt->length = p - pkt->dat; + return 0; +} |
