96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/*
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* Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute
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* of Technology.
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* For copying and distribution information, please see the file
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* <Copyright.MIT>.
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*
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* from: cr_err_reply.c,v 4.10 89/01/10 11:34:42 steiner Exp $
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* $Id: cr_err_reply.c,v 1.1.1.1 1994/09/30 14:49:57 csgr Exp $
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*/
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#ifndef lint
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static char rcsid[] =
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"$Id: cr_err_reply.c,v 1.1.1.1 1994/09/30 14:49:57 csgr Exp $";
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#endif /* lint */
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#include <sys/types.h>
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#include <krb.h>
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#include <prot.h>
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#include <strings.h>
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extern int req_act_vno; /* this is defined in the kerberos
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* server code */
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/*
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* This routine is used by the Kerberos authentication server to
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* create an error reply packet to send back to its client.
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*
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* It takes a pointer to the packet to be built, the name, instance,
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* and realm of the principal, the client's timestamp, an error code
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* and an error string as arguments. Its return value is undefined.
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*
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* The packet is built in the following format:
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*
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* type variable data
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* or constant
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* ---- ----------- ----
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*
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* unsigned char req_ack_vno protocol version number
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*
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* unsigned char AUTH_MSG_ERR_REPLY protocol message type
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*
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* [least significant HOST_BYTE_ORDER sender's (server's) byte
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* bit of above field] order
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*
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* string pname principal's name
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*
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* string pinst principal's instance
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*
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* string prealm principal's realm
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*
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* unsigned long time_ws client's timestamp
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*
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* unsigned long e error code
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*
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* string e_string error text
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*/
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void
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cr_err_reply(pkt,pname,pinst,prealm,time_ws,e,e_string)
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KTEXT pkt;
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char *pname; /* Principal's name */
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char *pinst; /* Principal's instance */
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char *prealm; /* Principal's authentication domain */
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u_long time_ws; /* Workstation time */
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u_long e; /* Error code */
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char *e_string; /* Text of error */
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{
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u_char *v = (u_char *) pkt->dat; /* Prot vers number */
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u_char *t = (u_char *)(pkt->dat+1); /* Prot message type */
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/* Create fixed part of packet */
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*v = (unsigned char) req_act_vno; /* KRB_PROT_VERSION; */
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*t = (unsigned char) AUTH_MSG_ERR_REPLY;
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*t |= HOST_BYTE_ORDER;
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/* Add the basic info */
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(void) strcpy((char *) (pkt->dat+2),pname);
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pkt->length = 3 + strlen(pname);
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(void) strcpy((char *)(pkt->dat+pkt->length),pinst);
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pkt->length += 1 + strlen(pinst);
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(void) strcpy((char *)(pkt->dat+pkt->length),prealm);
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pkt->length += 1 + strlen(prealm);
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/* ws timestamp */
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bcopy((char *) &time_ws,(char *)(pkt->dat+pkt->length),4);
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pkt->length += 4;
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/* err code */
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bcopy((char *) &e,(char *)(pkt->dat+pkt->length),4);
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pkt->length += 4;
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/* err text */
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(void) strcpy((char *)(pkt->dat+pkt->length),e_string);
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pkt->length += 1 + strlen(e_string);
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/* And return */
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return;
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}
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