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3 * (Royal Institute of Technology, Stockholm, Sweden).
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36 RCSID("$Id: cr_err_reply.c,v 1.11 1999/12/02 16:58:41 joda Exp $");
39 * This routine is used by the Kerberos authentication server to
40 * create an error reply packet to send back to its client.
42 * It takes a pointer to the packet to be built, the name, instance,
43 * and realm of the principal, the client's timestamp, an error code
44 * and an error string as arguments. Its return value is undefined.
46 * The packet is built in the following format:
50 * ---- ----------- ----
52 * unsigned char req_ack_vno protocol version number
54 * unsigned char AUTH_MSG_ERR_REPLY protocol message type
56 * [least significant HOST_BYTE_ORDER sender's (server's) byte
57 * bit of above field] order
59 * string pname principal's name
61 * string pinst principal's instance
63 * string prealm principal's realm
65 * unsigned long time_ws client's timestamp
67 * unsigned long e error code
69 * string e_string error text
73 cr_err_reply(KTEXT pkt, char *pname, char *pinst, char *prealm,
74 u_int32_t time_ws, u_int32_t e, char *e_string)
76 unsigned char *p = pkt->dat;
78 size_t rem = sizeof(pkt->dat);
80 tmp = krb_put_int(KRB_PROT_VERSION, p, rem, 1);
86 tmp = krb_put_int(AUTH_MSG_ERR_REPLY, p, rem, 1);
92 if (pname == NULL) pname = "";
93 if (pinst == NULL) pinst = "";
94 if (prealm == NULL) prealm = "";
96 tmp = krb_put_nir(pname, pinst, prealm, p, rem);
102 tmp = krb_put_int(time_ws, p, rem, 4);
108 tmp = krb_put_int(e, p, rem, 4);
114 tmp = krb_put_string(e_string, p, rem);
120 pkt->length = p - pkt->dat;