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-rw-r--r--libexec/rbootd/utils.c557
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diff --git a/libexec/rbootd/utils.c b/libexec/rbootd/utils.c
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-/*
- * Copyright (c) 1988, 1992 The University of Utah and the Center
- * for Software Science (CSS).
- * Copyright (c) 1992, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * the Center for Software Science of the University of Utah Computer
- * Science Department. CSS requests users of this software to return
- * to css-dist@cs.utah.edu any improvements that they make and grant
- * CSS redistribution rights.
- *
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
- *
- * @(#)utils.c 8.2 (Berkeley) 2/22/94
- *
- * Utah $Hdr: utils.c 3.1 92/07/06$
- * Author: Jeff Forys, University of Utah CSS
- */
-
-#ifndef lint
-static char sccsid[] = "@(#)utils.c 8.2 (Berkeley) 2/22/94";
-#endif /* not lint */
-
-#include <sys/param.h>
-#include <sys/time.h>
-
-#include <fcntl.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <syslog.h>
-#include <time.h>
-#include <unistd.h>
-#include "defs.h"
-
-/*
-** DispPkt -- Display the contents of an RMPCONN packet.
-**
-** Parameters:
-** rconn - packet to be displayed.
-** direct - direction packet is going (DIR_*).
-**
-** Returns:
-** Nothing.
-**
-** Side Effects:
-** None.
-*/
-void
-DispPkt(rconn, direct)
- RMPCONN *rconn;
- int direct;
-{
- static char BootFmt[] = "\t\tRetCode:%u SeqNo:%lx SessID:%x Vers:%u";
- static char ReadFmt[] = "\t\tRetCode:%u Offset:%lx SessID:%x\n";
-
- struct tm *tmp;
- register struct rmp_packet *rmp;
- int i, omask;
- u_int t;
-
- /*
- * Since we will be working with RmpConns as well as DbgFp, we
- * must block signals that can affect either.
- */
- omask = sigblock(sigmask(SIGHUP)|sigmask(SIGUSR1)|sigmask(SIGUSR2));
-
- if (DbgFp == NULL) { /* sanity */
- (void) sigsetmask(omask);
- return;
- }
-
- /* display direction packet is going using '>>>' or '<<<' */
- fputs((direct==DIR_RCVD)?"<<< ":(direct==DIR_SENT)?">>> ":"", DbgFp);
-
- /* display packet timestamp */
- tmp = localtime((time_t *)&rconn->tstamp.tv_sec);
- fprintf(DbgFp, "%02d:%02d:%02d.%06ld ", tmp->tm_hour, tmp->tm_min,
- tmp->tm_sec, rconn->tstamp.tv_usec);
-
- /* display src or dst addr and information about network interface */
- fprintf(DbgFp, "Addr: %s Intf: %s\n", EnetStr(rconn), IntfName);
-
- rmp = &rconn->rmp;
-
- /* display IEEE 802.2 Logical Link Control header */
- (void) fprintf(DbgFp, "\t802.2 LLC: DSAP:%x SSAP:%x CTRL:%x\n",
- rmp->hp_llc.dsap, rmp->hp_llc.ssap, rmp->hp_llc.cntrl);
-
- /* display HP extensions to 802.2 Logical Link Control header */
- (void) fprintf(DbgFp, "\tHP Ext: DXSAP:%x SXSAP:%x\n",
- rmp->hp_llc.dxsap, rmp->hp_llc.sxsap);
-
- /*
- * Display information about RMP packet using type field to
- * determine what kind of packet this is.
- */
- switch(rmp->r_type) {
- case RMP_BOOT_REQ: /* boot request */
- (void) fprintf(DbgFp, "\tBoot Request:");
- GETWORD(rmp->r_brq.rmp_seqno, t);
- if (rmp->r_brq.rmp_session == RMP_PROBESID) {
- if (WORDZE(rmp->r_brq.rmp_seqno))
- fputs(" (Send Server ID)", DbgFp);
- else
- fprintf(DbgFp," (Send Filename #%u)",t);
- }
- (void) fputc('\n', DbgFp);
- (void) fprintf(DbgFp, BootFmt, rmp->r_brq.rmp_retcode,
- t, rmp->r_brq.rmp_session,
- rmp->r_brq.rmp_version);
- (void) fprintf(DbgFp, "\n\t\tMachine Type: ");
- for (i = 0; i < RMP_MACHLEN; i++)
- (void) fputc(rmp->r_brq.rmp_machtype[i], DbgFp);
- DspFlnm(rmp->r_brq.rmp_flnmsize, &rmp->r_brq.rmp_flnm);
- break;
- case RMP_BOOT_REPL: /* boot reply */
- fprintf(DbgFp, "\tBoot Reply:\n");
- GETWORD(rmp->r_brpl.rmp_seqno, t);
- (void) fprintf(DbgFp, BootFmt, rmp->r_brpl.rmp_retcode,
- t, rmp->r_brpl.rmp_session,
- rmp->r_brpl.rmp_version);
- DspFlnm(rmp->r_brpl.rmp_flnmsize,&rmp->r_brpl.rmp_flnm);
- break;
- case RMP_READ_REQ: /* read request */
- (void) fprintf(DbgFp, "\tRead Request:\n");
- GETWORD(rmp->r_rrq.rmp_offset, t);
- (void) fprintf(DbgFp, ReadFmt, rmp->r_rrq.rmp_retcode,
- t, rmp->r_rrq.rmp_session);
- (void) fprintf(DbgFp, "\t\tNoOfBytes: %u\n",
- rmp->r_rrq.rmp_size);
- break;
- case RMP_READ_REPL: /* read reply */
- (void) fprintf(DbgFp, "\tRead Reply:\n");
- GETWORD(rmp->r_rrpl.rmp_offset, t);
- (void) fprintf(DbgFp, ReadFmt, rmp->r_rrpl.rmp_retcode,
- t, rmp->r_rrpl.rmp_session);
- (void) fprintf(DbgFp, "\t\tNoOfBytesSent: %d\n",
- rconn->rmplen - RMPREADSIZE(0));
- break;
- case RMP_BOOT_DONE: /* boot complete */
- (void) fprintf(DbgFp, "\tBoot Complete:\n");
- (void) fprintf(DbgFp, "\t\tRetCode:%u SessID:%x\n",
- rmp->r_done.rmp_retcode,
- rmp->r_done.rmp_session);
- break;
- default: /* ??? */
- (void) fprintf(DbgFp, "\tUnknown Type:(%d)\n",
- rmp->r_type);
- }
- (void) fputc('\n', DbgFp);
- (void) fflush(DbgFp);
-
- (void) sigsetmask(omask); /* reset old signal mask */
-}
-
-
-/*
-** GetEtherAddr -- convert an RMP (Ethernet) address into a string.
-**
-** An RMP BOOT packet has been received. Look at the type field
-** and process Boot Requests, Read Requests, and Boot Complete
-** packets. Any other type will be dropped with a warning msg.
-**
-** Parameters:
-** addr - array of RMP_ADDRLEN bytes.
-**
-** Returns:
-** Pointer to static string representation of `addr'.
-**
-** Side Effects:
-** None.
-**
-** Warnings:
-** - The return value points to a static buffer; it must
-** be copied if it's to be saved.
-** - For speed, we assume a u_char consists of 8 bits.
-*/
-char *
-GetEtherAddr(addr)
- u_char *addr;
-{
- static char Hex[] = "0123456789abcdef";
- static char etherstr[RMP_ADDRLEN*3];
- register int i;
- register char *cp1, *cp2;
-
- /*
- * For each byte in `addr', convert it to "<hexchar><hexchar>:".
- * The last byte does not get a trailing `:' appended.
- */
- i = 0;
- cp1 = (char *)addr;
- cp2 = etherstr;
- for(;;) {
- *cp2++ = Hex[*cp1 >> 4 & 0xf];
- *cp2++ = Hex[*cp1++ & 0xf];
- if (++i == RMP_ADDRLEN)
- break;
- *cp2++ = ':';
- }
- *cp2 = '\0';
-
- return(etherstr);
-}
-
-
-/*
-** DispFlnm -- Print a string of bytes to DbgFp (often, a file name).
-**
-** Parameters:
-** size - number of bytes to print.
-** flnm - address of first byte.
-**
-** Returns:
-** Nothing.
-**
-** Side Effects:
-** - Characters are sent to `DbgFp'.
-*/
-void
-DspFlnm(size, flnm)
- register u_int size;
- register char *flnm;
-{
- register int i;
-
- (void) fprintf(DbgFp, "\n\t\tFile Name (%d): <", size);
- for (i = 0; i < size; i++)
- (void) fputc(*flnm++, DbgFp);
- (void) fputs(">\n", DbgFp);
-}
-
-
-/*
-** NewClient -- allocate memory for a new CLIENT.
-**
-** Parameters:
-** addr - RMP (Ethernet) address of new client.
-**
-** Returns:
-** Ptr to new CLIENT or NULL if we ran out of memory.
-**
-** Side Effects:
-** - Memory will be malloc'd for the new CLIENT.
-** - If malloc() fails, a log message will be generated.
-*/
-CLIENT *
-NewClient(addr)
- u_char *addr;
-{
- CLIENT *ctmp;
-
- if ((ctmp = (CLIENT *) malloc(sizeof(CLIENT))) == NULL) {
- syslog(LOG_ERR, "NewClient: out of memory (%s)",
- GetEtherAddr(addr));
- return(NULL);
- }
-
- bzero(ctmp, sizeof(CLIENT));
- bcopy(addr, &ctmp->addr[0], RMP_ADDRLEN);
- return(ctmp);
-}
-
-/*
-** FreeClient -- free linked list of Clients.
-**
-** Parameters:
-** None.
-**
-** Returns:
-** Nothing.
-**
-** Side Effects:
-** - All malloc'd memory associated with the linked list of
-** CLIENTS will be free'd; `Clients' will be set to NULL.
-**
-** Warnings:
-** - This routine must be called with SIGHUP blocked.
-*/
-void
-FreeClients()
-{
- register CLIENT *ctmp;
-
- while (Clients != NULL) {
- ctmp = Clients;
- Clients = Clients->next;
- FreeClient(ctmp);
- }
-}
-
-/*
-** NewStr -- allocate memory for a character array.
-**
-** Parameters:
-** str - null terminated character array.
-**
-** Returns:
-** Ptr to new character array or NULL if we ran out of memory.
-**
-** Side Effects:
-** - Memory will be malloc'd for the new character array.
-** - If malloc() fails, a log message will be generated.
-*/
-char *
-NewStr(str)
- char *str;
-{
- char *stmp;
-
- if ((stmp = (char *)malloc((unsigned) (strlen(str)+1))) == NULL) {
- syslog(LOG_ERR, "NewStr: out of memory (%s)", str);
- return(NULL);
- }
-
- (void) strcpy(stmp, str);
- return(stmp);
-}
-
-/*
-** To save time, NewConn and FreeConn maintain a cache of one RMPCONN
-** in `LastFree' (defined below).
-*/
-
-static RMPCONN *LastFree = NULL;
-
-/*
-** NewConn -- allocate memory for a new RMPCONN connection.
-**
-** Parameters:
-** rconn - initialization template for new connection.
-**
-** Returns:
-** Ptr to new RMPCONN or NULL if we ran out of memory.
-**
-** Side Effects:
-** - Memory may be malloc'd for the new RMPCONN (if not cached).
-** - If malloc() fails, a log message will be generated.
-*/
-RMPCONN *
-NewConn(rconn)
- RMPCONN *rconn;
-{
- RMPCONN *rtmp;
-
- if (LastFree == NULL) { /* nothing cached; make a new one */
- if ((rtmp = (RMPCONN *) malloc(sizeof(RMPCONN))) == NULL) {
- syslog(LOG_ERR, "NewConn: out of memory (%s)",
- EnetStr(rconn));
- return(NULL);
- }
- } else { /* use the cached RMPCONN */
- rtmp = LastFree;
- LastFree = NULL;
- }
-
- /*
- * Copy template into `rtmp', init file descriptor to `-1' and
- * set ptr to next elem NULL.
- */
- bcopy((char *)rconn, (char *)rtmp, sizeof(RMPCONN));
- rtmp->bootfd = -1;
- rtmp->next = NULL;
-
- return(rtmp);
-}
-
-/*
-** FreeConn -- Free memory associated with an RMPCONN connection.
-**
-** Parameters:
-** rtmp - ptr to RMPCONN to be free'd.
-**
-** Returns:
-** Nothing.
-**
-** Side Effects:
-** - Memory associated with `rtmp' may be free'd (or cached).
-** - File desc associated with `rtmp->bootfd' will be closed.
-*/
-void
-FreeConn(rtmp)
- register RMPCONN *rtmp;
-{
- /*
- * If the file descriptor is in use, close the file.
- */
- if (rtmp->bootfd >= 0) {
- (void) close(rtmp->bootfd);
- rtmp->bootfd = -1;
- }
-
- if (LastFree == NULL) /* cache for next time */
- rtmp = LastFree;
- else /* already one cached; free this one */
- free((char *)rtmp);
-}
-
-/*
-** FreeConns -- free linked list of RMPCONN connections.
-**
-** Parameters:
-** None.
-**
-** Returns:
-** Nothing.
-**
-** Side Effects:
-** - All malloc'd memory associated with the linked list of
-** connections will be free'd; `RmpConns' will be set to NULL.
-** - If LastFree is != NULL, it too will be free'd & NULL'd.
-**
-** Warnings:
-** - This routine must be called with SIGHUP blocked.
-*/
-void
-FreeConns()
-{
- register RMPCONN *rtmp;
-
- while (RmpConns != NULL) {
- rtmp = RmpConns;
- RmpConns = RmpConns->next;
- FreeConn(rtmp);
- }
-
- if (LastFree != NULL) {
- free((char *)LastFree);
- LastFree = NULL;
- }
-}
-
-/*
-** AddConn -- Add a connection to the linked list of connections.
-**
-** Parameters:
-** rconn - connection to be added.
-**
-** Returns:
-** Nothing.
-**
-** Side Effects:
-** - RmpConn will point to new connection.
-**
-** Warnings:
-** - This routine must be called with SIGHUP blocked.
-*/
-void
-AddConn(rconn)
- register RMPCONN *rconn;
-{
- if (RmpConns != NULL)
- rconn->next = RmpConns;
- RmpConns = rconn;
-}
-
-/*
-** FindConn -- Find a connection in the linked list of connections.
-**
-** We use the RMP (Ethernet) address as the basis for determining
-** if this is the same connection. According to the Remote Maint
-** Protocol, we can only have one connection with any machine.
-**
-** Parameters:
-** rconn - connection to be found.
-**
-** Returns:
-** Matching connection from linked list or NULL if not found.
-**
-** Side Effects:
-** None.
-**
-** Warnings:
-** - This routine must be called with SIGHUP blocked.
-*/
-RMPCONN *
-FindConn(rconn)
- register RMPCONN *rconn;
-{
- register RMPCONN *rtmp;
-
- for (rtmp = RmpConns; rtmp != NULL; rtmp = rtmp->next)
- if (bcmp((char *)&rconn->rmp.hp_hdr.saddr[0],
- (char *)&rtmp->rmp.hp_hdr.saddr[0], RMP_ADDRLEN) == 0)
- break;
-
- return(rtmp);
-}
-
-/*
-** RemoveConn -- Remove a connection from the linked list of connections.
-**
-** Parameters:
-** rconn - connection to be removed.
-**
-** Returns:
-** Nothing.
-**
-** Side Effects:
-** - If found, an RMPCONN will cease to exist and it will
-** be removed from the linked list.
-**
-** Warnings:
-** - This routine must be called with SIGHUP blocked.
-*/
-void
-RemoveConn(rconn)
- register RMPCONN *rconn;
-{
- register RMPCONN *thisrconn, *lastrconn;
-
- if (RmpConns == rconn) { /* easy case */
- RmpConns = RmpConns->next;
- FreeConn(rconn);
- } else { /* must traverse linked list */
- lastrconn = RmpConns; /* set back ptr */
- thisrconn = lastrconn->next; /* set current ptr */
- while (thisrconn != NULL) {
- if (rconn == thisrconn) { /* found it */
- lastrconn->next = thisrconn->next;
- FreeConn(thisrconn);
- break;
- }
- lastrconn = thisrconn;
- thisrconn = thisrconn->next;
- }
- }
-}
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