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-rw-r--r--eBones/lib/libkrb/rd_req.c331
1 files changed, 0 insertions, 331 deletions
diff --git a/eBones/lib/libkrb/rd_req.c b/eBones/lib/libkrb/rd_req.c
deleted file mode 100644
index 60ee9483d30c..000000000000
--- a/eBones/lib/libkrb/rd_req.c
+++ /dev/null
@@ -1,331 +0,0 @@
-/*
- * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute
- * of Technology.
- * For copying and distribution information, please see the file
- * <Copyright.MIT>.
- *
- * from: der: rd_req.c,v 4.16 89/03/22 14:52:06 jtkohl Exp $
- * $Id: rd_req.c,v 1.3 1995/07/18 16:39:33 mark Exp $
- */
-
-#if 0
-#ifndef lint
-static char *rcsid =
-"$Id: rd_req.c,v 1.3 1995/07/18 16:39:33 mark Exp $";
-#endif /* lint */
-#endif
-
-#include <des.h>
-#include <krb.h>
-#include <prot.h>
-#include <sys/time.h>
-#include <strings.h>
-
-extern int krb_ap_req_debug;
-
-static struct timeval t_local = { 0, 0 };
-
-/*
- * Keep the following information around for subsequent calls
- * to this routine by the same server using the same key.
- */
-
-static Key_schedule serv_key; /* Key sched to decrypt ticket */
-static C_Block ky; /* Initialization vector */
-static int st_kvno; /* version number for this key */
-static char st_rlm[REALM_SZ]; /* server's realm */
-static char st_nam[ANAME_SZ]; /* service name */
-static char st_inst[INST_SZ]; /* server's instance */
-
-/*
- * This file contains two functions. krb_set_key() takes a DES
- * key or password string and returns a DES key (either the original
- * key, or the password converted into a DES key) and a key schedule
- * for it.
- *
- * krb_rd_req() reads an authentication request and returns information
- * about the identity of the requestor, or an indication that the
- * identity information was not authentic.
- */
-
-/*
- * krb_set_key() takes as its first argument either a DES key or a
- * password string. The "cvt" argument indicates how the first
- * argument "key" is to be interpreted: if "cvt" is null, "key" is
- * taken to be a DES key; if "cvt" is non-null, "key" is taken to
- * be a password string, and is converted into a DES key using
- * string_to_key(). In either case, the resulting key is returned
- * in the external static variable "ky". A key schedule is
- * generated for "ky" and returned in the external static variable
- * "serv_key".
- *
- * This routine returns the return value of des_key_sched.
- *
- * krb_set_key() needs to be in the same .o file as krb_rd_req() so that
- * the key set by krb_set_key() is available in private storage for
- * krb_rd_req().
- */
-
-int
-krb_set_key(key,cvt)
- char *key;
- int cvt;
-{
-#ifdef NOENCRYPTION
- bzero(ky, sizeof(ky));
- return KSUCCESS;
-#else
- if (cvt)
- string_to_key(key,(C_Block *)ky);
- else
- bcopy(key,(char *)ky,8);
- return(des_key_sched((C_Block *)ky,serv_key));
-#endif
-}
-
-
-/*
- * krb_rd_req() takes an AUTH_MSG_APPL_REQUEST or
- * AUTH_MSG_APPL_REQUEST_MUTUAL message created by krb_mk_req(),
- * checks its integrity and returns a judgement as to the requestor's
- * identity.
- *
- * The "authent" argument is a pointer to the received message.
- * The "service" and "instance" arguments name the receiving server,
- * and are used to get the service's ticket to decrypt the ticket
- * in the message, and to compare against the server name inside the
- * ticket. "from_addr" is the network address of the host from which
- * the message was received; this is checked against the network
- * address in the ticket. If "from_addr" is zero, the check is not
- * performed. "ad" is an AUTH_DAT structure which is
- * filled in with information about the sender's identity according
- * to the authenticator and ticket sent in the message. Finally,
- * "fn" contains the name of the file containing the server's key.
- * (If "fn" is NULL, the server's key is assumed to have been set
- * by krb_set_key(). If "fn" is the null string ("") the default
- * file KEYFILE, defined in "krb.h", is used.)
- *
- * krb_rd_req() returns RD_AP_OK if the authentication information
- * was genuine, or one of the following error codes (defined in
- * "krb.h"):
- *
- * RD_AP_VERSION - wrong protocol version number
- * RD_AP_MSG_TYPE - wrong message type
- * RD_AP_UNDEC - couldn't decipher the message
- * RD_AP_INCON - inconsistencies found
- * RD_AP_BADD - wrong network address
- * RD_AP_TIME - client time (in authenticator)
- * too far off server time
- * RD_AP_NYV - Kerberos time (in ticket) too
- * far off server time
- * RD_AP_EXP - ticket expired
- *
- * For the message format, see krb_mk_req().
- *
- * Mutual authentication is not implemented.
- */
-
-int
-krb_rd_req(authent,service,instance,from_addr,ad,fn)
- register KTEXT authent; /* The received message */
- char *service; /* Service name */
- char *instance; /* Service instance */
- long from_addr; /* Net address of originating host */
- AUTH_DAT *ad; /* Structure to be filled in */
- char *fn; /* Filename to get keys from */
-{
- static KTEXT_ST ticket; /* Temp storage for ticket */
- static KTEXT tkt = &ticket;
- static KTEXT_ST req_id_st; /* Temp storage for authenticator */
- register KTEXT req_id = &req_id_st;
-
- char realm[REALM_SZ]; /* Realm of issuing kerberos */
- static Key_schedule seskey_sched; /* Key sched for session key */
- unsigned char skey[KKEY_SZ]; /* Session key from ticket */
- char sname[SNAME_SZ]; /* Service name from ticket */
- char iname[INST_SZ]; /* Instance name from ticket */
- char r_aname[ANAME_SZ]; /* Client name from authenticator */
- char r_inst[INST_SZ]; /* Client instance from authenticator */
- char r_realm[REALM_SZ]; /* Client realm from authenticator */
- unsigned int r_time_ms; /* Fine time from authenticator */
- unsigned long r_time_sec; /* Coarse time from authenticator */
- register char *ptr; /* For stepping through */
- unsigned long delta_t; /* Time in authenticator - local time */
- long tkt_age; /* Age of ticket */
- static int swap_bytes; /* Need to swap bytes? */
- static int mutual; /* Mutual authentication requested? */
- static unsigned char s_kvno;/* Version number of the server's key
- * Kerberos used to encrypt ticket */
- int status;
-
- if (authent->length <= 0)
- return(RD_AP_MODIFIED);
-
- ptr = (char *) authent->dat;
-
- /* get msg version, type and byte order, and server key version */
-
- /* check version */
- if (KRB_PROT_VERSION != (unsigned int) *ptr++)
- return(RD_AP_VERSION);
-
- /* byte order */
- swap_bytes = 0;
- if ((*ptr & 1) != HOST_BYTE_ORDER)
- swap_bytes++;
-
- /* check msg type */
- mutual = 0;
- switch (*ptr++ & ~1) {
- case AUTH_MSG_APPL_REQUEST:
- break;
- case AUTH_MSG_APPL_REQUEST_MUTUAL:
- mutual++;
- break;
- default:
- return(RD_AP_MSG_TYPE);
- }
-
-#ifdef lint
- /* XXX mutual is set but not used; why??? */
- /* this is a crock to get lint to shut up */
- if (mutual)
- mutual = 0;
-#endif /* lint */
- s_kvno = *ptr++; /* get server key version */
- (void) strcpy(realm,ptr); /* And the realm of the issuing KDC */
- ptr += strlen(ptr) + 1; /* skip the realm "hint" */
-
- /*
- * If "fn" is NULL, key info should already be set; don't
- * bother with ticket file. Otherwise, check to see if we
- * already have key info for the given server and key version
- * (saved in the static st_* variables). If not, go get it
- * from the ticket file. If "fn" is the null string, use the
- * default ticket file.
- */
- if (fn && (strcmp(st_nam,service) || strcmp(st_inst,instance) ||
- strcmp(st_rlm,realm) || (st_kvno != s_kvno))) {
- if (*fn == 0) fn = KEYFILE;
- st_kvno = s_kvno;
-#ifndef NOENCRYPTION
- if (read_service_key(service,instance,realm,s_kvno,fn,(char *)skey))
- return(RD_AP_UNDEC);
- if ((status=krb_set_key((char *)skey,0))) return(status);
-#endif
- (void) strcpy(st_rlm,realm);
- (void) strcpy(st_nam,service);
- (void) strcpy(st_inst,instance);
- }
-
- /* Get ticket from authenticator */
- tkt->length = (int) *ptr++;
- if ((tkt->length + (ptr+1 - (char *) authent->dat)) > authent->length)
- return(RD_AP_MODIFIED);
- bcopy(ptr+1,(char *)(tkt->dat),tkt->length);
-
- if (krb_ap_req_debug)
- log("ticket->length: %d",tkt->length);
-
-#ifndef NOENCRYPTION
- /* Decrypt and take apart ticket */
-#endif
-
- if (decomp_ticket(tkt,&ad->k_flags,ad->pname,ad->pinst,ad->prealm,
- &(ad->address),ad->session, &(ad->life),
- &(ad->time_sec),sname,iname,ky,serv_key))
- return(RD_AP_UNDEC);
-
- if (krb_ap_req_debug) {
- log("Ticket Contents.");
- log(" Aname: %s.%s",ad->pname,
- ((int)*(ad->prealm) ? ad->prealm : "Athena"));
- log(" Service: %s%s%s",sname,((int)*iname ? "." : ""),iname);
- }
-
- /* Extract the authenticator */
- req_id->length = (int) *(ptr++);
- if ((req_id->length + (ptr + tkt->length - (char *) authent->dat)) >
- authent->length)
- return(RD_AP_MODIFIED);
- bcopy(ptr + tkt->length, (char *)(req_id->dat),req_id->length);
-
-#ifndef NOENCRYPTION
- key_sched((C_Block *)ad->session,seskey_sched);
- pcbc_encrypt((C_Block *)req_id->dat,(C_Block *)req_id->dat,
- (long)req_id->length,seskey_sched,(C_Block *)ad->session,DES_DECRYPT);
-#endif /* NOENCRYPTION */
-
-#define check_ptr() if ((ptr - (char *) req_id->dat) > req_id->length) return(RD_AP_MODIFIED);
-
- ptr = (char *) req_id->dat;
- (void) strcpy(r_aname,ptr); /* Authentication name */
- ptr += strlen(r_aname)+1;
- check_ptr();
- (void) strcpy(r_inst,ptr); /* Authentication instance */
- ptr += strlen(r_inst)+1;
- check_ptr();
- (void) strcpy(r_realm,ptr); /* Authentication name */
- ptr += strlen(r_realm)+1;
- check_ptr();
- bcopy(ptr,(char *)&ad->checksum,4); /* Checksum */
- ptr += 4;
- check_ptr();
- if (swap_bytes) swap_u_long(ad->checksum);
- r_time_ms = *(ptr++); /* Time (fine) */
-#ifdef lint
- /* XXX r_time_ms is set but not used. why??? */
- /* this is a crock to get lint to shut up */
- if (r_time_ms)
- r_time_ms = 0;
-#endif /* lint */
- check_ptr();
- /* assume sizeof(r_time_sec) == 4 ?? */
- bcopy(ptr,(char *)&r_time_sec,4); /* Time (coarse) */
- if (swap_bytes) swap_u_long(r_time_sec);
-
- /* Check for authenticity of the request */
- if (krb_ap_req_debug)
- log("Pname: %s %s",ad->pname,r_aname);
- if (strcmp(ad->pname,r_aname) != 0)
- return(RD_AP_INCON);
- if (strcmp(ad->pinst,r_inst) != 0)
- return(RD_AP_INCON);
- if (krb_ap_req_debug)
- log("Realm: %s %s",ad->prealm,r_realm);
- if ((strcmp(ad->prealm,r_realm) != 0))
- return(RD_AP_INCON);
-
- if (krb_ap_req_debug)
- log("Address: %d %d",ad->address,from_addr);
- if (from_addr && (ad->address != from_addr))
- return(RD_AP_BADD);
-
- (void) gettimeofday(&t_local,(struct timezone *) 0);
- delta_t = abs((int)(t_local.tv_sec - r_time_sec));
- if (delta_t > CLOCK_SKEW) {
- if (krb_ap_req_debug)
- log("Time out of range: %d - %d = %d",
- t_local.tv_sec,r_time_sec,delta_t);
- return(RD_AP_TIME);
- }
-
- /* Now check for expiration of ticket */
-
- tkt_age = t_local.tv_sec - ad->time_sec;
- if (krb_ap_req_debug)
- log("Time: %d Issue Date: %d Diff: %d Life %x",
- t_local.tv_sec,ad->time_sec,tkt_age,ad->life);
-
- if (t_local.tv_sec < ad->time_sec) {
- if ((ad->time_sec - t_local.tv_sec) > CLOCK_SKEW)
- return(RD_AP_NYV);
- }
- else if ((t_local.tv_sec - ad->time_sec) > 5 * 60 * ad->life)
- return(RD_AP_EXP);
-
- /* All seems OK */
- ad->reply.length = 0;
-
- return(RD_AP_OK);
-}
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