diff options
Diffstat (limited to 'libexec/rbootd/rmpproto.c')
| -rw-r--r-- | libexec/rbootd/rmpproto.c | 593 |
1 files changed, 0 insertions, 593 deletions
diff --git a/libexec/rbootd/rmpproto.c b/libexec/rbootd/rmpproto.c deleted file mode 100644 index d0a8d4a8086f..000000000000 --- a/libexec/rbootd/rmpproto.c +++ /dev/null @@ -1,593 +0,0 @@ -/* - * 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. - * - * @(#)rmpproto.c 8.1 (Berkeley) 6/4/93 - * - * Utah $Hdr: rmpproto.c 3.1 92/07/06$ - * Author: Jeff Forys, University of Utah CSS - */ - -#ifndef lint -static char sccsid[] = "@(#)rmpproto.c 8.1 (Berkeley) 6/4/93"; -#endif /* not lint */ - -#include <sys/param.h> -#include <sys/time.h> - -#include <errno.h> -#include <fcntl.h> -#include <stdio.h> -#include <string.h> -#include <syslog.h> -#include <unistd.h> -#include "defs.h" - -/* -** ProcessPacket -- determine packet type and do what's required. -** -** 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: -** rconn - the new connection -** client - list of files available to this host -** -** Returns: -** Nothing. -** -** Side Effects: -** - If this is a valid boot request, it will be added to -** the linked list of outstanding requests (RmpConns). -** - If this is a valid boot complete, its associated -** entry in RmpConns will be deleted. -** - Also, unless we run out of memory, a reply will be -** sent to the host that sent the packet. -*/ -void -ProcessPacket(rconn, client) - RMPCONN *rconn; - CLIENT *client; -{ - struct rmp_packet *rmp; - RMPCONN *rconnout; - - rmp = &rconn->rmp; /* cache pointer to RMP packet */ - - switch(rmp->r_type) { /* do what we came here to do */ - case RMP_BOOT_REQ: /* boot request */ - if ((rconnout = NewConn(rconn)) == NULL) - return; - - /* - * If the Session ID is 0xffff, this is a "probe" - * packet and we do not want to add the connection - * to the linked list of active connections. There - * are two types of probe packets, if the Sequence - * Number is 0 they want to know our host name, o/w - * they want the name of the file associated with - * the number spec'd by the Sequence Number. - * - * If this is an actual boot request, open the file - * and send a reply. If SendBootRepl() does not - * return 0, add the connection to the linked list - * of active connections, otherwise delete it since - * an error was encountered. - */ - if (rmp->r_brq.rmp_session == RMP_PROBESID) { - if (WORDZE(rmp->r_brq.rmp_seqno)) - (void) SendServerID(rconnout); - else - (void) SendFileNo(rmp, rconnout, - client? client->files: - BootFiles); - FreeConn(rconnout); - } else { - if (SendBootRepl(rmp, rconnout, - client? client->files: BootFiles)) - AddConn(rconnout); - else - FreeConn(rconnout); - } - break; - - case RMP_BOOT_REPL: /* boot reply (not valid) */ - syslog(LOG_WARNING, "%s: sent a boot reply", - EnetStr(rconn)); - break; - - case RMP_READ_REQ: /* read request */ - /* - * Send a portion of the boot file. - */ - (void) SendReadRepl(rconn); - break; - - case RMP_READ_REPL: /* read reply (not valid) */ - syslog(LOG_WARNING, "%s: sent a read reply", - EnetStr(rconn)); - break; - - case RMP_BOOT_DONE: /* boot complete */ - /* - * Remove the entry from the linked list of active - * connections. - */ - (void) BootDone(rconn); - break; - - default: /* unknown RMP packet type */ - syslog(LOG_WARNING, "%s: unknown packet type (%u)", - EnetStr(rconn), rmp->r_type); - } -} - -/* -** SendServerID -- send our host name to who ever requested it. -** -** Parameters: -** rconn - the reply packet to be formatted. -** -** Returns: -** 1 on success, 0 on failure. -** -** Side Effects: -** none. -*/ -int -SendServerID(rconn) - RMPCONN *rconn; -{ - register struct rmp_packet *rpl; - register char *src, *dst; - register u_char *size; - - rpl = &rconn->rmp; /* cache ptr to RMP packet */ - - /* - * Set up assorted fields in reply packet. - */ - rpl->r_brpl.rmp_type = RMP_BOOT_REPL; - rpl->r_brpl.rmp_retcode = RMP_E_OKAY; - ZEROWORD(rpl->r_brpl.rmp_seqno); - rpl->r_brpl.rmp_session = 0; - rpl->r_brpl.rmp_version = RMP_VERSION; - - size = &rpl->r_brpl.rmp_flnmsize; /* ptr to length of host name */ - - /* - * Copy our host name into the reply packet incrementing the - * length as we go. Stop at RMP_HOSTLEN or the first dot. - */ - src = MyHost; - dst = (char *) &rpl->r_brpl.rmp_flnm; - for (*size = 0; *size < RMP_HOSTLEN; (*size)++) { - if (*src == '.' || *src == '\0') - break; - *dst++ = *src++; - } - - rconn->rmplen = RMPBOOTSIZE(*size); /* set packet length */ - - return(SendPacket(rconn)); /* send packet */ -} - -/* -** SendFileNo -- send the name of a bootable file to the requester. -** -** Parameters: -** req - RMP BOOT packet containing the request. -** rconn - the reply packet to be formatted. -** filelist - list of files available to the requester. -** -** Returns: -** 1 on success, 0 on failure. -** -** Side Effects: -** none. -*/ -int -SendFileNo(req, rconn, filelist) - struct rmp_packet *req; - RMPCONN *rconn; - char *filelist[]; -{ - register struct rmp_packet *rpl; - register char *src, *dst; - register u_char *size, i; - - GETWORD(req->r_brpl.rmp_seqno, i); /* SeqNo is really FileNo */ - rpl = &rconn->rmp; /* cache ptr to RMP packet */ - - /* - * Set up assorted fields in reply packet. - */ - rpl->r_brpl.rmp_type = RMP_BOOT_REPL; - PUTWORD(i, rpl->r_brpl.rmp_seqno); - i--; - rpl->r_brpl.rmp_session = 0; - rpl->r_brpl.rmp_version = RMP_VERSION; - - size = &rpl->r_brpl.rmp_flnmsize; /* ptr to length of filename */ - *size = 0; /* init length to zero */ - - /* - * Copy the file name into the reply packet incrementing the - * length as we go. Stop at end of string or when RMPBOOTDATA - * characters have been copied. Also, set return code to - * indicate success or "no more files". - */ - if (i < C_MAXFILE && filelist[i] != NULL) { - src = filelist[i]; - dst = (char *)&rpl->r_brpl.rmp_flnm; - for (; *src && *size < RMPBOOTDATA; (*size)++) { - if (*src == '\0') - break; - *dst++ = *src++; - } - rpl->r_brpl.rmp_retcode = RMP_E_OKAY; - } else - rpl->r_brpl.rmp_retcode = RMP_E_NODFLT; - - rconn->rmplen = RMPBOOTSIZE(*size); /* set packet length */ - - return(SendPacket(rconn)); /* send packet */ -} - -/* -** SendBootRepl -- open boot file and respond to boot request. -** -** Parameters: -** req - RMP BOOT packet containing the request. -** rconn - the reply packet to be formatted. -** filelist - list of files available to the requester. -** -** Returns: -** 1 on success, 0 on failure. -** -** Side Effects: -** none. -*/ -int -SendBootRepl(req, rconn, filelist) - struct rmp_packet *req; - RMPCONN *rconn; - char *filelist[]; -{ - int retval; - char *filename, filepath[RMPBOOTDATA+1]; - RMPCONN *oldconn; - register struct rmp_packet *rpl; - register char *src, *dst1, *dst2; - register u_char i; - - /* - * If another connection already exists, delete it since we - * are obviously starting again. - */ - if ((oldconn = FindConn(rconn)) != NULL) { - syslog(LOG_WARNING, "%s: dropping existing connection", - EnetStr(oldconn)); - RemoveConn(oldconn); - } - - rpl = &rconn->rmp; /* cache ptr to RMP packet */ - - /* - * Set up assorted fields in reply packet. - */ - rpl->r_brpl.rmp_type = RMP_BOOT_REPL; - COPYWORD(req->r_brq.rmp_seqno, rpl->r_brpl.rmp_seqno); - rpl->r_brpl.rmp_session = GenSessID(); - rpl->r_brpl.rmp_version = RMP_VERSION; - rpl->r_brpl.rmp_flnmsize = req->r_brq.rmp_flnmsize; - - /* - * Copy file name to `filepath' string, and into reply packet. - */ - src = &req->r_brq.rmp_flnm; - dst1 = filepath; - dst2 = &rpl->r_brpl.rmp_flnm; - for (i = 0; i < req->r_brq.rmp_flnmsize; i++) - *dst1++ = *dst2++ = *src++; - *dst1 = '\0'; - - /* - * If we are booting HP-UX machines, their secondary loader will - * ask for files like "/hp-ux". As a security measure, we do not - * allow boot files to lay outside the boot directory (unless they - * are purposely link'd out. So, make `filename' become the path- - * stripped file name and spoof the client into thinking that it - * really got what it wanted. - */ - filename = (filename = rindex(filepath,'/'))? ++filename: filepath; - - /* - * Check that this is a valid boot file name. - */ - for (i = 0; i < C_MAXFILE && filelist[i] != NULL; i++) - if (STREQN(filename, filelist[i])) - goto match; - - /* - * Invalid boot file name, set error and send reply packet. - */ - rpl->r_brpl.rmp_retcode = RMP_E_NOFILE; - retval = 0; - goto sendpkt; - -match: - /* - * This is a valid boot file. Open the file and save the file - * descriptor associated with this connection and set success - * indication. If the file couldnt be opened, set error: - * "no such file or dir" - RMP_E_NOFILE - * "file table overflow" - RMP_E_BUSY - * "too many open files" - RMP_E_BUSY - * anything else - RMP_E_OPENFILE - */ - if ((rconn->bootfd = open(filename, O_RDONLY, 0600)) < 0) { - rpl->r_brpl.rmp_retcode = (errno == ENOENT)? RMP_E_NOFILE: - (errno == EMFILE || errno == ENFILE)? RMP_E_BUSY: - RMP_E_OPENFILE; - retval = 0; - } else { - rpl->r_brpl.rmp_retcode = RMP_E_OKAY; - retval = 1; - } - -sendpkt: - syslog(LOG_INFO, "%s: request to boot %s (%s)", - EnetStr(rconn), filename, retval? "granted": "denied"); - - rconn->rmplen = RMPBOOTSIZE(rpl->r_brpl.rmp_flnmsize); - - return (retval & SendPacket(rconn)); -} - -/* -** SendReadRepl -- send a portion of the boot file to the requester. -** -** Parameters: -** rconn - the reply packet to be formatted. -** -** Returns: -** 1 on success, 0 on failure. -** -** Side Effects: -** none. -*/ -int -SendReadRepl(rconn) - RMPCONN *rconn; -{ - int retval; - RMPCONN *oldconn; - register struct rmp_packet *rpl, *req; - register int size = 0; - int madeconn = 0; - - /* - * Find the old connection. If one doesnt exist, create one only - * to return the error code. - */ - if ((oldconn = FindConn(rconn)) == NULL) { - if ((oldconn = NewConn(rconn)) == NULL) - return(0); - syslog(LOG_ERR, "SendReadRepl: no active connection (%s)", - EnetStr(rconn)); - madeconn++; - } - - req = &rconn->rmp; /* cache ptr to request packet */ - rpl = &oldconn->rmp; /* cache ptr to reply packet */ - - if (madeconn) { /* no active connection above; abort */ - rpl->r_rrpl.rmp_retcode = RMP_E_ABORT; - retval = 1; - goto sendpkt; - } - - /* - * Make sure Session ID's match. - */ - if (req->r_rrq.rmp_session != - ((rpl->r_type == RMP_BOOT_REPL)? rpl->r_brpl.rmp_session: - rpl->r_rrpl.rmp_session)) { - syslog(LOG_ERR, "SendReadRepl: bad session id (%s)", - EnetStr(rconn)); - rpl->r_rrpl.rmp_retcode = RMP_E_BADSID; - retval = 1; - goto sendpkt; - } - - /* - * If the requester asks for more data than we can fit, - * silently clamp the request size down to RMPREADDATA. - * - * N.B. I do not know if this is "legal", however it seems - * to work. This is necessary for bpfwrite() on machines - * with MCLBYTES less than 1514. - */ - if (req->r_rrq.rmp_size > RMPREADDATA) - req->r_rrq.rmp_size = RMPREADDATA; - - /* - * Position read head on file according to info in request packet. - */ - GETWORD(req->r_rrq.rmp_offset, size); - if (lseek(oldconn->bootfd, (off_t)size, L_SET) < 0) { - syslog(LOG_ERR, "SendReadRepl: lseek: %m (%s)", - EnetStr(rconn)); - rpl->r_rrpl.rmp_retcode = RMP_E_ABORT; - retval = 1; - goto sendpkt; - } - - /* - * Read data directly into reply packet. - */ - if ((size = read(oldconn->bootfd, &rpl->r_rrpl.rmp_data, - (int) req->r_rrq.rmp_size)) <= 0) { - if (size < 0) { - syslog(LOG_ERR, "SendReadRepl: read: %m (%s)", - EnetStr(rconn)); - rpl->r_rrpl.rmp_retcode = RMP_E_ABORT; - } else { - rpl->r_rrpl.rmp_retcode = RMP_E_EOF; - } - retval = 1; - goto sendpkt; - } - - /* - * Set success indication. - */ - rpl->r_rrpl.rmp_retcode = RMP_E_OKAY; - -sendpkt: - /* - * Set up assorted fields in reply packet. - */ - rpl->r_rrpl.rmp_type = RMP_READ_REPL; - COPYWORD(req->r_rrq.rmp_offset, rpl->r_rrpl.rmp_offset); - rpl->r_rrpl.rmp_session = req->r_rrq.rmp_session; - - oldconn->rmplen = RMPREADSIZE(size); /* set size of packet */ - - retval &= SendPacket(oldconn); /* send packet */ - - if (madeconn) /* clean up after ourself */ - FreeConn(oldconn); - - return (retval); -} - -/* -** BootDone -- free up memory allocated for a connection. -** -** Parameters: -** rconn - incoming boot complete packet. -** -** Returns: -** 1 on success, 0 on failure. -** -** Side Effects: -** none. -*/ -int -BootDone(rconn) - RMPCONN *rconn; -{ - RMPCONN *oldconn; - struct rmp_packet *rpl; - - /* - * If we cant find the connection, ignore the request. - */ - if ((oldconn = FindConn(rconn)) == NULL) { - syslog(LOG_ERR, "BootDone: no existing connection (%s)", - EnetStr(rconn)); - return(0); - } - - rpl = &oldconn->rmp; /* cache ptr to RMP packet */ - - /* - * Make sure Session ID's match. - */ - if (rconn->rmp.r_rrq.rmp_session != - ((rpl->r_type == RMP_BOOT_REPL)? rpl->r_brpl.rmp_session: - rpl->r_rrpl.rmp_session)) { - syslog(LOG_ERR, "BootDone: bad session id (%s)", - EnetStr(rconn)); - return(0); - } - - RemoveConn(oldconn); /* remove connection */ - - syslog(LOG_INFO, "%s: boot complete", EnetStr(rconn)); - - return(1); -} - -/* -** SendPacket -- send an RMP packet to a remote host. -** -** Parameters: -** rconn - packet to be sent. -** -** Returns: -** 1 on success, 0 on failure. -** -** Side Effects: -** none. -*/ -int -SendPacket(rconn) - register RMPCONN *rconn; -{ - /* - * Set Ethernet Destination address to Source (BPF and the enet - * driver will take care of getting our source address set). - */ - bcopy((char *)&rconn->rmp.hp_hdr.saddr[0], - (char *)&rconn->rmp.hp_hdr.daddr[0], RMP_ADDRLEN); - rconn->rmp.hp_hdr.len = rconn->rmplen - sizeof(struct hp_hdr); - - /* - * Reverse 802.2/HP Extended Source & Destination Access Pts. - */ - rconn->rmp.hp_llc.dxsap = HPEXT_SXSAP; - rconn->rmp.hp_llc.sxsap = HPEXT_DXSAP; - - /* - * Last time this connection was active. - */ - (void) gettimeofday(&rconn->tstamp, (struct timezone *)0); - - if (DbgFp != NULL) /* display packet */ - DispPkt(rconn,DIR_SENT); - - /* - * Send RMP packet to remote host. - */ - return(BpfWrite(rconn)); -} |