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- /*
- * $Source: /usr/src/kerberosIV/krb/RCS/cr_err_reply.c,v $
- * $Author: kfall $
- *
- * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute
- * of Technology.
- *
- * For copying and distribution information, please see the file
- * <mit-copyright.h>.
- */
-
- #ifndef lint
- static char *rcsid_cr_err_reply_c =
- "$Header: /usr/src/kerberosIV/krb/RCS/cr_err_reply.c,v 4.11 90/06/25 20:55:11 kfall Exp $";
- #endif /* lint */
-
- #include <mit-copyright.h>
- #include <sys/types.h>
- #include <des.h>
- #include <krb.h>
- #include <prot.h>
- #include <strings.h>
-
- extern int req_act_vno; /* this is defined in the kerberos
- * server code */
-
- /*
- * 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
- */
-
- void
- cr_err_reply(pkt,pname,pinst,prealm,time_ws,e,e_string)
- KTEXT pkt;
- char *pname; /* Principal's name */
- char *pinst; /* Principal's instance */
- char *prealm; /* Principal's authentication domain */
- u_long time_ws; /* Workstation time */
- u_long e; /* Error code */
- char *e_string; /* Text of error */
- {
- u_char *v = (u_char *) pkt->dat; /* Prot vers number */
- u_char *t = (u_char *)(pkt->dat+1); /* Prot message type */
-
- /* Create fixed part of packet */
- *v = (unsigned char) req_act_vno; /* KRB_PROT_VERSION; */
- *t = (unsigned char) AUTH_MSG_ERR_REPLY;
- *t |= HOST_BYTE_ORDER;
-
- /* Add the basic info */
- (void) strcpy((char *) (pkt->dat+2),pname);
- pkt->length = 3 + strlen(pname);
- (void) strcpy((char *)(pkt->dat+pkt->length),pinst);
- pkt->length += 1 + strlen(pinst);
- (void) strcpy((char *)(pkt->dat+pkt->length),prealm);
- pkt->length += 1 + strlen(prealm);
- /* ws timestamp */
- bcopy((char *) &time_ws,(char *)(pkt->dat+pkt->length),4);
- pkt->length += 4;
- /* err code */
- bcopy((char *) &e,(char *)(pkt->dat+pkt->length),4);
- pkt->length += 4;
- /* err text */
- (void) strcpy((char *)(pkt->dat+pkt->length),e_string);
- pkt->length += 1 + strlen(e_string);
-
- /* And return */
- return;
- }
-