/*
* ipxcp.c - PPP IPX Control Protocol.
*
- * Copyright (c) 1989 Carnegie Mellon University.
- * All rights reserved.
+ * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
*
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by Carnegie Mellon University. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * 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. The name "Carnegie Mellon University" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For permission or any legal
+ * details, please contact
+ * Office of Technology Transfer
+ * Carnegie Mellon University
+ * 5000 Forbes Avenue
+ * Pittsburgh, PA 15213-3890
+ * (412) 268-4387, fax: (412) 268-7395
+ * tech-transfer@andrew.cmu.edu
+ *
+ * 4. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by Computing Services
+ * at Carnegie Mellon University (http://www.cmu.edu/computing/)."
+ *
+ * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
+ * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#ifdef IPX_CHANGE
-#ifndef lint
-static char rcsid[] = "$Id: ipxcp.c,v 1.2 1996/07/01 01:14:25 paulus Exp $";
+#ifdef HAVE_CONFIG_H
+#include "config.h"
#endif
+#ifdef IPX_CHANGE
+
/*
* TODO:
*/
#include <stdio.h>
#include <string.h>
-#include <syslog.h>
+#include <unistd.h>
+#include <ctype.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include "fsm.h"
#include "ipxcp.h"
#include "pathnames.h"
+#include "magic.h"
+
/* global vars */
ipxcp_options ipxcp_wantoptions[NUM_PPP]; /* Options that we want to request */
/*
* Callbacks for fsm code. (CI = Configuration Information)
*/
-static void ipxcp_resetci __P((fsm *)); /* Reset our CI */
-static int ipxcp_cilen __P((fsm *)); /* Return length of our CI */
-static void ipxcp_addci __P((fsm *, u_char *, int *)); /* Add our CI */
-static int ipxcp_ackci __P((fsm *, u_char *, int)); /* Peer ack'd our CI */
-static int ipxcp_nakci __P((fsm *, u_char *, int)); /* Peer nak'd our CI */
-static int ipxcp_rejci __P((fsm *, u_char *, int)); /* Peer rej'd our CI */
-static int ipxcp_reqci __P((fsm *, u_char *, int *, int)); /* Rcv CI */
-static void ipxcp_up __P((fsm *)); /* We're UP */
-static void ipxcp_down __P((fsm *)); /* We're DOWN */
-static void ipxcp_script __P((fsm *, char *)); /* Run an up/down script */
+static void ipxcp_resetci (fsm *); /* Reset our CI */
+static int ipxcp_cilen (fsm *); /* Return length of our CI */
+static void ipxcp_addci (fsm *, u_char *, int *); /* Add our CI */
+static int ipxcp_ackci (fsm *, u_char *, int); /* Peer ack'd our CI */
+static int ipxcp_nakci (fsm *, u_char *, int, int);/* Peer nak'd our CI */
+static int ipxcp_rejci (fsm *, u_char *, int); /* Peer rej'd our CI */
+static int ipxcp_reqci (fsm *, u_char *, int *, int); /* Rcv CI */
+static void ipxcp_up (fsm *); /* We're UP */
+static void ipxcp_down (fsm *); /* We're DOWN */
+static void ipxcp_finished (fsm *); /* Don't need lower layer */
+static void ipxcp_script (fsm *, char *); /* Run an up/down script */
fsm ipxcp_fsm[NUM_PPP]; /* IPXCP fsm structure */
ipxcp_up, /* Called when fsm reaches OPENED state */
ipxcp_down, /* Called when fsm leaves OPENED state */
NULL, /* Called when we want the lower layer up */
- NULL, /* Called when we want the lower layer down */
+ ipxcp_finished, /* Called when we want the lower layer down */
NULL, /* Called when Protocol-Reject received */
NULL, /* Retransmission is necessary */
NULL, /* Called to handle protocol-specific codes */
"IPXCP" /* String name of protocol */
};
+/*
+ * Command-line options.
+ */
+static int setipxnode (char **);
+static void printipxnode (option_t *,
+ void (*)(void *, char *, ...), void *);
+static int setipxname (char **);
+
+static option_t ipxcp_option_list[] = {
+ { "ipx", o_bool, &ipxcp_protent.enabled_flag,
+ "Enable IPXCP (and IPX)", OPT_PRIO | 1 },
+ { "+ipx", o_bool, &ipxcp_protent.enabled_flag,
+ "Enable IPXCP (and IPX)", OPT_PRIOSUB | OPT_ALIAS | 1 },
+ { "noipx", o_bool, &ipxcp_protent.enabled_flag,
+ "Disable IPXCP (and IPX)", OPT_PRIOSUB },
+ { "-ipx", o_bool, &ipxcp_protent.enabled_flag,
+ "Disable IPXCP (and IPX)", OPT_PRIOSUB | OPT_ALIAS },
+
+ { "ipx-network", o_uint32, &ipxcp_wantoptions[0].our_network,
+ "Set our IPX network number", OPT_PRIO, &ipxcp_wantoptions[0].neg_nn },
+
+ { "ipxcp-accept-network", o_bool, &ipxcp_wantoptions[0].accept_network,
+ "Accept peer IPX network number", 1,
+ &ipxcp_allowoptions[0].accept_network },
+
+ { "ipx-node", o_special, (void *)setipxnode,
+ "Set IPX node number", OPT_A2PRINTER, (void *)printipxnode },
+
+ { "ipxcp-accept-local", o_bool, &ipxcp_wantoptions[0].accept_local,
+ "Accept our IPX address", 1,
+ &ipxcp_allowoptions[0].accept_local },
+
+ { "ipxcp-accept-remote", o_bool, &ipxcp_wantoptions[0].accept_remote,
+ "Accept peer's IPX address", 1,
+ &ipxcp_allowoptions[0].accept_remote },
+
+ { "ipx-routing", o_int, &ipxcp_wantoptions[0].router,
+ "Set IPX routing proto number", OPT_PRIO,
+ &ipxcp_wantoptions[0].neg_router },
+
+ { "ipx-router-name", o_special, setipxname,
+ "Set IPX router name", OPT_PRIO | OPT_A2STRVAL | OPT_STATIC,
+ &ipxcp_wantoptions[0].name },
+
+ { "ipxcp-restart", o_int, &ipxcp_fsm[0].timeouttime,
+ "Set timeout for IPXCP", OPT_PRIO },
+ { "ipxcp-max-terminate", o_int, &ipxcp_fsm[0].maxtermtransmits,
+ "Set max #xmits for IPXCP term-reqs", OPT_PRIO },
+ { "ipxcp-max-configure", o_int, &ipxcp_fsm[0].maxconfreqtransmits,
+ "Set max #xmits for IPXCP conf-reqs", OPT_PRIO },
+ { "ipxcp-max-failure", o_int, &ipxcp_fsm[0].maxnakloops,
+ "Set max #conf-naks for IPXCP", OPT_PRIO },
+
+ { NULL }
+};
+
/*
* Protocol entry points.
*/
-static void ipxcp_init __P((int));
-static void ipxcp_open __P((int));
-static void ipxcp_close __P((int, char *));
-static void ipxcp_lowerup __P((int));
-static void ipxcp_lowerdown __P((int));
-static void ipxcp_input __P((int, u_char *, int));
-static void ipxcp_protrej __P((int));
-static int ipxcp_printpkt __P((u_char *, int,
- void (*) __P((void *, char *, ...)), void *));
+static void ipxcp_init (int);
+static void ipxcp_open (int);
+static void ipxcp_close (int, char *);
+static void ipxcp_lowerup (int);
+static void ipxcp_lowerdown (int);
+static void ipxcp_input (int, u_char *, int);
+static void ipxcp_protrej (int);
+static int ipxcp_printpkt (u_char *, int,
+ void (*) (void *, char *, ...), void *);
struct protent ipxcp_protent = {
PPP_IPXCP,
NULL,
0,
"IPXCP",
+ "IPX",
+ ipxcp_option_list,
NULL,
NULL,
NULL
};
-
/*
* Lengths of configuration options.
*/
#define CODENAME(x) ((x) == CONFACK ? "ACK" : \
(x) == CONFNAK ? "NAK" : "REJ")
+static int ipxcp_is_up;
+
+static char *ipx_ntoa (u_int32_t);
+
/* Used in printing the node number */
#define NODE(base) base[0], base[1], base[2], base[3], base[4], base[5]
/* Used to generate the proper bit mask */
#define BIT(num) (1 << (num))
+/*
+ * Convert from internal to external notation
+ */
+
+static short int
+to_external(short int internal)
+{
+ short int external;
+
+ if (internal & BIT(IPX_NONE) )
+ external = IPX_NONE;
+ else
+ external = RIP_SAP;
+
+ return external;
+}
+
/*
* Make a string representation of a network IP address.
*/
-char *
-ipx_ntoa(ipxaddr)
-u_int32_t ipxaddr;
+static char *
+ipx_ntoa(u_int32_t ipxaddr)
{
static char b[64];
- sprintf(b, "%lx", ipxaddr);
+ slprintf(b, sizeof(b), "%x", ipxaddr);
return b;
}
+static u_char *
+setipxnodevalue(u_char *src, u_char *dst)
+{
+ int indx;
+ int item;
+
+ for (;;) {
+ if (!isxdigit (*src))
+ break;
+
+ for (indx = 0; indx < 5; ++indx) {
+ dst[indx] <<= 4;
+ dst[indx] |= (dst[indx + 1] >> 4) & 0x0F;
+ }
+
+ item = toupper (*src) - '0';
+ if (item > 9)
+ item -= 7;
+
+ dst[5] = (dst[5] << 4) | item;
+ ++src;
+ }
+ return src;
+}
+
+static int ipx_prio_our, ipx_prio_his;
+
+static int
+setipxnode(char **argv)
+{
+ u_char *end;
+ int have_his = 0;
+ u_char our_node[6];
+ u_char his_node[6];
+
+ memset (our_node, 0, 6);
+ memset (his_node, 0, 6);
+
+ end = setipxnodevalue ((u_char *)*argv, our_node);
+ if (*end == ':') {
+ have_his = 1;
+ end = setipxnodevalue (++end, his_node);
+ }
+
+ if (*end == '\0') {
+ ipxcp_wantoptions[0].neg_node = 1;
+ if (option_priority >= ipx_prio_our) {
+ memcpy(&ipxcp_wantoptions[0].our_node[0], our_node, 6);
+ ipx_prio_our = option_priority;
+ }
+ if (have_his && option_priority >= ipx_prio_his) {
+ memcpy(&ipxcp_wantoptions[0].his_node[0], his_node, 6);
+ ipx_prio_his = option_priority;
+ }
+ return 1;
+ }
+
+ option_error("invalid parameter '%s' for ipx-node option", *argv);
+ return 0;
+}
+
+static void
+printipxnode(option_t *opt, void (*printer) (void *, char *, ...), void *arg)
+{
+ unsigned char *p;
+
+ p = ipxcp_wantoptions[0].our_node;
+ if (ipx_prio_our)
+ printer(arg, "%.2x%.2x%.2x%.2x%.2x%.2x",
+ p[0], p[1], p[2], p[3], p[4], p[5]);
+ printer(arg, ":");
+ p = ipxcp_wantoptions[0].his_node;
+ if (ipx_prio_his)
+ printer(arg, "%.2x%.2x%.2x%.2x%.2x%.2x",
+ p[0], p[1], p[2], p[3], p[4], p[5]);
+}
+
+static int
+setipxname (char **argv)
+{
+ u_char *dest = ipxcp_wantoptions[0].name;
+ char *src = *argv;
+ int count;
+ char ch;
+
+ ipxcp_wantoptions[0].neg_name = 1;
+ ipxcp_allowoptions[0].neg_name = 1;
+ memset (dest, '\0', sizeof (ipxcp_wantoptions[0].name));
+
+ count = 0;
+ while (*src) {
+ ch = *src++;
+ if (! isalnum (ch) && ch != '_') {
+ option_error("IPX router name must be alphanumeric or _");
+ return 0;
+ }
+
+ if (count >= sizeof (ipxcp_wantoptions[0].name) - 1) {
+ option_error("IPX router name is limited to %d characters",
+ sizeof (ipxcp_wantoptions[0].name) - 1);
+ return 0;
+ }
+
+ dest[count++] = toupper (ch);
+ }
+ dest[count] = 0;
+
+ return 1;
+}
+
/*
* ipxcp_init - Initialize IPXCP.
*/
static void
-ipxcp_init(unit)
- int unit;
+ipxcp_init(int unit)
{
fsm *f = &ipxcp_fsm[unit];
ao->accept_local = 0;
ao->accept_remote = 0;
ao->accept_network = 0;
+
+ wo->tried_rip = 0;
+ wo->tried_nlsp = 0;
}
/*
*/
static void
-copy_node (src, dst)
-u_char *src, *dst;
+copy_node (u_char *src, u_char *dst)
{
memcpy (dst, src, sizeof (ipxcp_wantoptions[0].our_node));
}
*/
static int
-compare_node (src, dst)
-u_char *src, *dst;
+compare_node (u_char *src, u_char *dst)
{
return memcmp (dst, src, sizeof (ipxcp_wantoptions[0].our_node)) == 0;
}
*/
static int
-zero_node (node)
-u_char *node;
+zero_node (u_char *node)
{
int indx;
for (indx = 0; indx < sizeof (ipxcp_wantoptions[0].our_node); ++indx)
*/
static void
-inc_node (node)
-u_char *node;
+inc_node (u_char *node)
{
u_char *outp;
u_int32_t magic_num;
* ipxcp_open - IPXCP is allowed to come up.
*/
static void
-ipxcp_open(unit)
- int unit;
+ipxcp_open(int unit)
{
fsm_open(&ipxcp_fsm[unit]);
}
* ipxcp_close - Take IPXCP down.
*/
static void
-ipxcp_close(unit, reason)
- int unit;
- char *reason;
+ipxcp_close(int unit, char *reason)
{
fsm_close(&ipxcp_fsm[unit], reason);
}
* ipxcp_lowerup - The lower layer is up.
*/
static void
-ipxcp_lowerup(unit)
- int unit;
+ipxcp_lowerup(int unit)
{
fsm_lowerup(&ipxcp_fsm[unit]);
}
* ipxcp_lowerdown - The lower layer is down.
*/
static void
-ipxcp_lowerdown(unit)
- int unit;
+ipxcp_lowerdown(int unit)
{
fsm_lowerdown(&ipxcp_fsm[unit]);
}
* ipxcp_input - Input IPXCP packet.
*/
static void
-ipxcp_input(unit, p, len)
- int unit;
- u_char *p;
- int len;
+ipxcp_input(int unit, u_char *p, int len)
{
fsm_input(&ipxcp_fsm[unit], p, len);
}
* Pretend the lower layer went down, so we shut up.
*/
static void
-ipxcp_protrej(unit)
- int unit;
+ipxcp_protrej(int unit)
{
fsm_lowerdown(&ipxcp_fsm[unit]);
}
* ipxcp_resetci - Reset our CI.
*/
static void
-ipxcp_resetci(f)
- fsm *f;
+ipxcp_resetci(fsm *f)
{
- u_int32_t network;
- int unit = f->unit;
-
wo->req_node = wo->neg_node && ao->neg_node;
wo->req_nn = wo->neg_nn && ao->neg_nn;
ao->accept_remote = 1;
}
/*
- * Unless router protocol is suppressed then assume that we can do RIP.
+ * If no routing agent was specified then we do RIP/SAP according to the
+ * RFC documents. If you have specified something then OK. Otherwise, we
+ * do RIP/SAP.
*/
- if (! (wo->router & BIT(0)))
- wo->router |= BIT(2);
-/*
- * Router protocol is only negotiated if requested. Others force the
- * negotiation.
- */
- if (wo->router & (BIT(2) | BIT(4)))
- wo->neg_router = 1;
+ if (ao->router == 0) {
+ ao->router |= BIT(RIP_SAP);
+ wo->router |= BIT(RIP_SAP);
+ }
+
+ /* Always specify a routing protocol unless it was REJected. */
+ wo->neg_router = 1;
/*
* Start with these default values
*/
/*
* ipxcp_cilen - Return length of our CI.
*/
+
static int
-ipxcp_cilen(f)
- fsm *f;
+ipxcp_cilen(fsm *f)
{
- int unit = f->unit;
int len;
len = go->neg_nn ? CILEN_NETN : 0;
len += go->neg_node ? CILEN_NODEN : 0;
- len += go->neg_name ? CILEN_NAME + strlen (go->name) - 1 : 0;
- len += go->neg_complete ? CILEN_COMPLETE : 0;
-/*
- * Router protocol 0 is mutually exclusive with the others.
- */
- if (go->neg_router) {
- if (go->router & BIT(0))
- len += CILEN_PROTOCOL;
- else {
- if (go->router & BIT(2))
- len += CILEN_PROTOCOL;
- if (go->router & BIT(4))
- len += CILEN_PROTOCOL;
- }
- }
+ len += go->neg_name ? CILEN_NAME + strlen ((char *)go->name) - 1 : 0;
+
+ /* RFC says that defaults should not be included. */
+ if (go->neg_router && to_external(go->router) != RIP_SAP)
+ len += CILEN_PROTOCOL;
return (len);
}
* ipxcp_addci - Add our desired CIs to a packet.
*/
static void
-ipxcp_addci(f, ucp, lenp)
- fsm *f;
- u_char *ucp;
- int *lenp;
+ipxcp_addci(fsm *f, u_char *ucp, int *lenp)
{
- int len = *lenp;
- int unit = f->unit;
/*
* Add the options to the record.
*/
}
if (go->neg_name) {
- int cilen = strlen (go->name);
+ int cilen = strlen ((char *)go->name);
int indx;
PUTCHAR (IPX_ROUTER_NAME, ucp);
PUTCHAR (CILEN_NAME + cilen - 1, ucp);
PUTCHAR (go->name [indx], ucp);
}
- if (go->neg_router && (go->router & (BIT(0) | BIT(2) | BIT(4)))) {
- if (go->router & BIT(0)) {
+ if (go->neg_router) {
+ short external = to_external (go->router);
+ if (external != RIP_SAP) {
PUTCHAR (IPX_ROUTER_PROTOCOL, ucp);
- PUTCHAR (CILEN_PROTOCOL, ucp);
- PUTSHORT (0, ucp);
- } else {
- if (go->router & BIT(2)) {
- PUTCHAR (IPX_ROUTER_PROTOCOL, ucp);
- PUTCHAR (CILEN_PROTOCOL, ucp);
- PUTSHORT (2, ucp);
- }
-
- if (go->router & BIT(4)) {
- PUTCHAR (IPX_ROUTER_PROTOCOL, ucp);
- PUTCHAR (CILEN_PROTOCOL, ucp);
- PUTSHORT (4, ucp);
- }
+ PUTCHAR (CILEN_PROTOCOL, ucp);
+ PUTSHORT (external, ucp);
}
}
-
- if (go->neg_complete) {
- PUTCHAR (IPX_COMPLETE, ucp);
- PUTCHAR (CILEN_COMPLETE, ucp);
- }
}
/*
* 1 - Ack was good.
*/
static int
-ipxcp_ackci(f, p, len)
- fsm *f;
- u_char *p;
- int len;
+ipxcp_ackci(fsm *f, u_char *p, int len)
{
- int unit = f->unit;
u_short cilen, citype, cishort;
u_char cichar;
u_int32_t cilong;
}
#define ACKCINODE(opt,neg,val) ACKCICHARS(opt,neg,val,sizeof(val))
-#define ACKCINAME(opt,neg,val) ACKCICHARS(opt,neg,val,strlen(val))
+#define ACKCINAME(opt,neg,val) ACKCICHARS(opt,neg,val,strlen((char *)val))
#define ACKCINETWORK(opt, neg, val) \
if (neg) { \
break; \
}
-#define ACKCIPROTO(opt, neg, val, bit) \
- if (neg && (val & BIT(bit))) \
- { \
+#define ACKCIPROTO(opt, neg, val) \
+ if (neg) { \
if (len < 2) \
break; \
GETCHAR(citype, p); \
if (len < 0) \
break; \
GETSHORT(cishort, p); \
- if (cishort != (bit)) \
+ if (cishort != to_external (val) || cishort == RIP_SAP) \
break; \
}
/*
ACKCINETWORK (IPX_NETWORK_NUMBER, go->neg_nn, go->our_network);
ACKCINODE (IPX_NODE_NUMBER, go->neg_node, go->our_node);
ACKCINAME (IPX_ROUTER_NAME, go->neg_name, go->name);
- ACKCIPROTO (IPX_ROUTER_PROTOCOL, go->neg_router, go->router, 0);
- ACKCIPROTO (IPX_ROUTER_PROTOCOL, go->neg_router, go->router, 2);
- ACKCIPROTO (IPX_ROUTER_PROTOCOL, go->neg_router, go->router, 4);
- ACKCICOMPLETE (IPX_COMPLETE, go->neg_complete);
+ if (len > 0)
+ ACKCIPROTO (IPX_ROUTER_PROTOCOL, go->neg_router, go->router);
/*
* This is the end of the record.
*/
/*
* The frame is invalid
*/
- IPXCPDEBUG((LOG_INFO, "ipxcp_ackci: received bad Ack!"));
+ IPXCPDEBUG(("ipxcp_ackci: received bad Ack!"));
return (0);
}
*/
static int
-ipxcp_nakci(f, p, len)
- fsm *f;
- u_char *p;
- int len;
+ipxcp_nakci(fsm *f, u_char *p, int len, int treat_as_reject)
{
- int unit = f->unit;
u_char citype, cilen, *next;
u_short s;
u_int32_t l;
BZERO(&no, sizeof(no));
try = *go;
- while (len > CILEN_VOID) {
+ while (len >= CILEN_VOID) {
GETCHAR (citype, p);
GETCHAR (cilen, p);
len -= cilen;
- if (len < 0)
+ if (cilen < CILEN_VOID || len < 0)
goto bad;
next = &p [cilen - CILEN_VOID];
no.neg_nn = 1;
GETLONG(l, p);
- IPXCPDEBUG((LOG_INFO, "local IP address %d", l));
- if (l && ao->accept_network)
+ if (treat_as_reject)
+ try.neg_nn = 0;
+ else if (l && ao->accept_network)
try.our_network = l;
break;
goto bad;
no.neg_node = 1;
- IPXCPDEBUG((LOG_INFO,
- "local node number %02X%02X%02X%02X%02X%02X",
- NODE(p)));
-
- if (!zero_node (p) && ao->accept_local &&
- ! compare_node (p, ho->his_node))
+ if (treat_as_reject)
+ try.neg_node = 0;
+ else if (!zero_node (p) && ao->accept_local &&
+ ! compare_node (p, ho->his_node))
copy_node (p, try.our_node);
break;
- /* These have never been sent. Ignore the NAK frame */
+ /* This has never been sent. Ignore the NAK frame */
case IPX_COMPRESSION_PROTOCOL:
goto bad;
goto bad;
GETSHORT (s, p);
- if ((s != 0) && (s != 2) && (s != 4))
- goto bad;
+ if (s > 15) /* This is just bad, but ignore for now. */
+ break;
- if (no.router & BIT(s))
+ s = BIT(s);
+ if (no.router & s) /* duplicate NAKs are always bad */
goto bad;
if (no.router == 0) /* Reset on first NAK only */
try.router = 0;
- no.router |= BIT(s);
- try.router |= BIT(s);
- try.neg_router = 1;
- IPXCPDEBUG((LOG_INFO, "Router protocol number %d", s));
+ no.router |= s;
+ try.router |= s;
+ try.neg_router = 1;
break;
/* These, according to the RFC, must never be NAKed. */
p = next;
}
- /* If there is still anything left, this packet is bad. */
- if (len != 0)
- goto bad;
-
/*
* Do not permit the peer to force a router protocol which we do not
- * support.
+ * support. However, default to the condition that will accept "NONE".
*/
- try.router &= go->router;
- if (try.router == 0 && go->router != 0) {
+ try.router &= (ao->router | BIT(IPX_NONE));
+ if (try.router == 0 && ao->router != 0)
+ try.router = BIT(IPX_NONE);
+
+ if (try.router != 0)
try.neg_router = 1;
- try.router = BIT(0);
- }
/*
* OK, the Nak is good. Now we can update state.
+ * If there are any options left, we ignore them.
*/
if (f->state != OPENED)
*go = try;
return 1;
bad:
- IPXCPDEBUG((LOG_INFO, "ipxcp_nakci: received bad Nak!"));
+ IPXCPDEBUG(("ipxcp_nakci: received bad Nak!"));
return 0;
}
* ipxcp_rejci - Reject some of our CIs.
*/
static int
-ipxcp_rejci(f, p, len)
- fsm *f;
- u_char *p;
- int len;
+ipxcp_rejci(fsm *f, u_char *p, int len)
{
- int unit = f->unit;
u_short cilen, citype, cishort;
u_char cichar;
u_int32_t cilong;
ipxcp_options try; /* options to request next time */
#define REJCINETWORK(opt, neg, val) \
- if (neg) { \
- neg = 0; \
+ if (neg && p[0] == opt) { \
if ((len -= CILEN_NETN) < 0) \
break; \
GETCHAR(citype, p); \
GETLONG(cilong, p); \
if (cilong != val) \
break; \
- IPXCPDEBUG((LOG_INFO,"ipxcp_rejci rejected long opt %d", opt)); \
+ neg = 0; \
}
#define REJCICHARS(opt, neg, val, cnt) \
- if (neg) { \
+ if (neg && p[0] == opt) { \
int indx, count = cnt; \
- neg = 0; \
len -= (count + 2); \
if (len < 0) \
break; \
}\
if (indx != count) \
break; \
- IPXCPDEBUG((LOG_INFO,"ipxcp_rejci rejected opt %d", opt)); \
+ neg = 0; \
}
#define REJCINODE(opt,neg,val) REJCICHARS(opt,neg,val,sizeof(val))
-#define REJCINAME(opt,neg,val) REJCICHARS(opt,neg,val,strlen(val))
+#define REJCINAME(opt,neg,val) REJCICHARS(opt,neg,val,strlen((char *)val))
#define REJCIVOID(opt, neg) \
- if (neg) { \
- neg = 0; \
+ if (neg && p[0] == opt) { \
if ((len -= CILEN_VOID) < 0) \
break; \
GETCHAR(citype, p); \
GETCHAR(cilen, p); \
if (cilen != CILEN_VOID || citype != opt) \
break; \
- IPXCPDEBUG((LOG_INFO, "ipxcp_rejci rejected void opt %d", opt)); \
+ neg = 0; \
}
+/* a reject for RIP/SAP is invalid since we don't send it and you can't
+ reject something which is not sent. (You can NAK, but you can't REJ.) */
#define REJCIPROTO(opt, neg, val, bit) \
- if (neg && (val & BIT(bit))) \
- { \
- if (len < 2) \
+ if (neg && p[0] == opt) { \
+ if ((len -= CILEN_PROTOCOL) < 0) \
break; \
GETCHAR(citype, p); \
GETCHAR(cilen, p); \
- if (cilen != CILEN_PROTOCOL || citype != opt) \
- break; \
- len -= cilen; \
- if (len < 0) \
+ if (cilen != CILEN_PROTOCOL) \
break; \
GETSHORT(cishort, p); \
- if (cishort != (bit)) \
+ if (cishort != to_external (val) || cishort == RIP_SAP) \
break; \
- IPXCPDEBUG((LOG_INFO, "ipxcp_rejci rejected router proto %d", bit)); \
- val &= ~BIT(bit); \
- if (val == 0) \
- neg = 0; \
- }
-
+ neg = 0; \
+ }
/*
* Any Rejected CIs must be in exactly the same order that we sent.
* Check packet length and CI length at each step.
do {
REJCINETWORK (IPX_NETWORK_NUMBER, try.neg_nn, try.our_network);
REJCINODE (IPX_NODE_NUMBER, try.neg_node, try.our_node);
- REJCIPROTO (IPX_ROUTER_PROTOCOL, try.neg_router, try.router, 0);
- REJCIPROTO (IPX_ROUTER_PROTOCOL, try.neg_router, try.router, 2);
- REJCIPROTO (IPX_ROUTER_PROTOCOL, try.neg_router, try.router, 4);
REJCINAME (IPX_ROUTER_NAME, try.neg_name, try.name);
- REJCIVOID (IPX_COMPLETE, try.neg_complete);
+ REJCIPROTO (IPX_ROUTER_PROTOCOL, try.neg_router, try.router, 0);
/*
* This is the end of the record.
*/
/*
* The frame is invalid at this point.
*/
- IPXCPDEBUG((LOG_INFO, "ipxcp_rejci: received bad Reject!"));
+ IPXCPDEBUG(("ipxcp_rejci: received bad Reject!"));
return 0;
}
* CONFNAK; returns CONFREJ if it can't return CONFACK.
*/
static int
-ipxcp_reqci(f, inp, len, reject_if_disagree)
- fsm *f;
- u_char *inp; /* Requested CIs */
- int *len; /* Length of requested CIs */
- int reject_if_disagree;
+ipxcp_reqci(fsm *f, u_char *inp, int *len, int reject_if_disagree)
{
- int unit = f->unit;
u_char *cip, *next; /* Pointer to current and next CIs */
u_short cilen, citype; /* Parsed len, type */
- u_short cishort, ts; /* Parsed short value */
- u_int32_t tl, cinetwork, outnet;/* Parsed address values */
+ u_short cishort; /* Parsed short value */
+ u_int32_t cinetwork; /* Parsed address values */
int rc = CONFACK; /* Final packet return code */
int orc; /* Individual option return code */
u_char *p; /* Pointer to next char to parse */
u_char *ucp = inp; /* Pointer to current output char */
int l = *len; /* Length left */
- u_char maxslotindex, cflag;
/*
* Reset all his options.
if (l < 2 || /* Not enough data for CI header or */
p[1] < 2 || /* CI length too small or */
p[1] > l) { /* CI length too big? */
- IPXCPDEBUG((LOG_INFO, "ipxcp_reqci: bad CI length!"));
+ IPXCPDEBUG(("ipxcp_reqci: bad CI length!"));
orc = CONFREJ; /* Reject bad CI */
cilen = l; /* Reject till end of packet */
l = 0; /* Don't loop again */
* The network number must match. Choose the larger of the two.
*/
case IPX_NETWORK_NUMBER:
- IPXCPDEBUG((LOG_INFO, "ipxcp: received Network Number request"));
-
/* if we wont negotiate the network number or the length is wrong
then reject the option */
if ( !ao->neg_nn || cilen != CILEN_NETN ) {
break;
}
GETLONG(cinetwork, p);
- IPXCPDEBUG((LOG_INFO,"Remote proposed IPX network number is %8Lx",tl));
/* If the network numbers match then acknowledge them. */
if (cinetwork != 0) {
* The node number is required
*/
case IPX_NODE_NUMBER:
- IPXCPDEBUG((LOG_INFO, "ipxcp: received Node Number request"));
-
/* if we wont negotiate the node number or the length is wrong
then reject the option */
if ( cilen != CILEN_NODEN ) {
* Compression is not desired at this time. It is always rejected.
*/
case IPX_COMPRESSION_PROTOCOL:
- IPXCPDEBUG((LOG_INFO, "ipxcp: received Compression Protocol request "));
orc = CONFREJ;
break;
/*
* The routing protocol is a bitmask of various types. Any combination
- * of the values 2 and 4 are permissible. '0' for no routing protocol must
- * be specified only once.
+ * of the values RIP_SAP and NLSP are permissible. 'IPX_NONE' for no
+ * routing protocol must be specified only once.
*/
case IPX_ROUTER_PROTOCOL:
if ( !ao->neg_router || cilen < CILEN_PROTOCOL ) {
}
GETSHORT (cishort, p);
- IPXCPDEBUG((LOG_INFO,
- "Remote router protocol number %d",
- cishort));
- if ((cishort == 0 && ho->router != 0) || (ho->router & BIT(0))) {
- orc = CONFREJ;
- break;
+ if (wo->neg_router == 0) {
+ wo->neg_router = 1;
+ wo->router = BIT(IPX_NONE);
}
- if (cishort != 0 && cishort != 2 && cishort != 4) {
+ if ((cishort == IPX_NONE && ho->router != 0) ||
+ (ho->router & BIT(IPX_NONE))) {
orc = CONFREJ;
break;
}
- if (ho->router & BIT (cishort)) {
+ cishort = BIT(cishort);
+ if (ho->router & cishort) {
orc = CONFREJ;
break;
}
- ho->router |= BIT (cishort);
+ ho->router |= cishort;
ho->neg_router = 1;
+
+ /* Finally do not allow a router protocol which we do not
+ support. */
+
+ if ((cishort & (ao->router | BIT(IPX_NONE))) == 0) {
+ int protocol;
+
+ if (cishort == BIT(NLSP) &&
+ (ao->router & BIT(RIP_SAP)) &&
+ !wo->tried_rip) {
+ protocol = RIP_SAP;
+ wo->tried_rip = 1;
+ } else
+ protocol = IPX_NONE;
+
+ DECPTR (sizeof (u_int16_t), p);
+ PUTSHORT (protocol, p);
+ orc = CONFNAK;
+ }
break;
/*
* The router name is advisorary. Just accept it if it is not too large.
*/
case IPX_ROUTER_NAME:
- IPXCPDEBUG((LOG_INFO, "ipxcp: received Router Name request"));
if (cilen >= CILEN_NAME) {
int name_size = cilen - CILEN_NAME;
- if (name_size > sizeof (ho->name))
+ if (name_size >= sizeof (ho->name))
name_size = sizeof (ho->name) - 1;
memset (ho->name, 0, sizeof (ho->name));
memcpy (ho->name, p, name_size);
* This is advisorary.
*/
case IPX_COMPLETE:
- IPXCPDEBUG((LOG_INFO, "ipxcp: received Complete request"));
if (cilen != CILEN_COMPLETE)
orc = CONFREJ;
else {
* All other entries are not known at this time.
*/
default:
- IPXCPDEBUG((LOG_INFO, "ipxcp: received Complete request"));
orc = CONFREJ;
break;
}
-
endswitch:
- IPXCPDEBUG((LOG_INFO, " (%s)\n", CODENAME(orc)));
-
if (orc == CONFACK && /* Good CI */
rc != CONFACK) /* but prior CI wasnt? */
continue; /* Don't send this one */
if (rc != CONFREJ && !ho->neg_node &&
wo->req_nn && !reject_if_disagree) {
- u_char *ps;
if (rc == CONFACK) {
rc = CONFNAK;
wo->req_nn = 0; /* don't ask again */
}
*len = ucp - inp; /* Compute output length */
- IPXCPDEBUG((LOG_INFO, "ipxcp: returning Configure-%s", CODENAME(rc)));
+ IPXCPDEBUG(("ipxcp: returning Configure-%s", CODENAME(rc)));
return (rc); /* Return final code */
}
*/
static void
-ipxcp_up(f)
- fsm *f;
+ipxcp_up(fsm *f)
{
int unit = f->unit;
- IPXCPDEBUG((LOG_INFO, "ipxcp: up"));
+ IPXCPDEBUG(("ipxcp: up"));
+ /* The default router protocol is RIP/SAP. */
+ if (ho->router == 0)
+ ho->router = BIT(RIP_SAP);
+
+ if (go->router == 0)
+ go->router = BIT(RIP_SAP);
+
+ /* Fetch the network number */
if (!ho->neg_nn)
ho->his_network = wo->his_network;
copy_node (wo->our_node, go->our_node);
if (zero_node (go->our_node)) {
- IPXCPDEBUG((LOG_ERR, "Could not determine local IPX node address"));
- ipxcp_close(f->unit, "Could not determine local IPX node address");
+ static char errmsg[] = "Could not determine local IPX node address";
+ if (debug)
+ error(errmsg);
+ ipxcp_close(f->unit, errmsg);
return;
}
go->network = ho->his_network;
if (go->network == 0) {
- IPXCPDEBUG((LOG_ERR, "Could not determine network number"));
- ipxcp_close (unit, "Could not determine network number");
+ static char errmsg[] = "Can not determine network number";
+ if (debug)
+ error(errmsg);
+ ipxcp_close (unit, errmsg);
return;
}
/* bring the interface up */
if (!sifup(unit)) {
- IPXCPDEBUG((LOG_WARNING, "sifup failed"));
+ if (debug)
+ warn("sifup failed (IPX)");
ipxcp_close(unit, "Interface configuration failed");
return;
}
+ ipxcp_is_up = 1;
/* set the network number for IPX */
if (!sipxfaddr(unit, go->network, go->our_node)) {
- IPXCPDEBUG((LOG_WARNING, "sipxfaddr failed"));
+ if (debug)
+ warn("sipxfaddr failed");
ipxcp_close(unit, "Interface configuration failed");
return;
}
+ np_up(f->unit, PPP_IPX);
+
/*
* Execute the ipx-up script, like this:
* /etc/ppp/ipx-up interface tty speed local-IPX remote-IPX
*/
- ipxcp_script (f, "/etc/ppp/ipx-up");
+ ipxcp_script (f, _PATH_IPXUP);
}
/*
*/
static void
-ipxcp_down(f)
- fsm *f;
+ipxcp_down(fsm *f)
{
- u_int32_t ournn, network;
-
- IPXCPDEBUG((LOG_INFO, "ipxcp: down"));
+ IPXCPDEBUG(("ipxcp: down"));
- cipxfaddr (f->unit);
+ if (!ipxcp_is_up)
+ return;
+ ipxcp_is_up = 0;
+ np_down(f->unit, PPP_IPX);
+ cipxfaddr(f->unit);
+ sifnpmode(f->unit, PPP_IPX, NPMODE_DROP);
sifdown(f->unit);
- ipxcp_script (f, "/etc/ppp/ipx-down");
+ ipxcp_script (f, _PATH_IPXDOWN);
+}
+
+
+/*
+ * ipxcp_finished - possibly shut down the lower layers.
+ */
+static void
+ipxcp_finished(fsm *f)
+{
+ np_finished(f->unit, PPP_IPX);
}
* interface-name tty-name speed local-IPX remote-IPX networks.
*/
static void
-ipxcp_script(f, script)
- fsm *f;
- char *script;
+ipxcp_script(fsm *f, char *script)
{
- int unit = f->unit;
char strspeed[32], strlocal[32], strremote[32];
char strnetwork[32], strpid[32];
char *argv[14], strproto_lcl[32], strproto_rmt[32];
- sprintf (strpid, "%d", getpid());
- sprintf (strspeed, "%d", baud_rate);
+ slprintf(strpid, sizeof(strpid), "%d", getpid());
+ slprintf(strspeed, sizeof(strspeed),"%d", baud_rate);
strproto_lcl[0] = '\0';
- if (go->neg_router) {
- if (go->router & BIT(2))
- strcpy (strproto_lcl, "RIP ");
- if (go->router & BIT(4))
- strcpy (strproto_lcl, "NLSP ");
+ if (go->neg_router && ((go->router & BIT(IPX_NONE)) == 0)) {
+ if (go->router & BIT(RIP_SAP))
+ strlcpy (strproto_lcl, "RIP ", sizeof(strproto_lcl));
+ if (go->router & BIT(NLSP))
+ strlcat (strproto_lcl, "NLSP ", sizeof(strproto_lcl));
}
if (strproto_lcl[0] == '\0')
- strcpy (strproto_lcl, "NONE ");
+ strlcpy (strproto_lcl, "NONE ", sizeof(strproto_lcl));
strproto_lcl[strlen (strproto_lcl)-1] = '\0';
strproto_rmt[0] = '\0';
- if (ho->neg_router) {
- if (ho->router & BIT(2))
- strcpy (strproto_rmt, "RIP ");
- if (ho->router & BIT(4))
- strcpy (strproto_rmt, "NLSP ");
+ if (ho->neg_router && ((ho->router & BIT(IPX_NONE)) == 0)) {
+ if (ho->router & BIT(RIP_SAP))
+ strlcpy (strproto_rmt, "RIP ", sizeof(strproto_rmt));
+ if (ho->router & BIT(NLSP))
+ strlcat (strproto_rmt, "NLSP ", sizeof(strproto_rmt));
}
if (strproto_rmt[0] == '\0')
- strcpy (strproto_rmt, "NONE ");
+ strlcpy (strproto_rmt, "NONE ", sizeof(strproto_rmt));
strproto_rmt[strlen (strproto_rmt)-1] = '\0';
- strcpy (strnetwork, ipx_ntoa (go->network));
+ strlcpy (strnetwork, ipx_ntoa (go->network), sizeof(strnetwork));
- sprintf (strlocal,
- "%02X%02X%02X%02X%02X%02X",
- NODE(go->our_node));
+ slprintf (strlocal, sizeof(strlocal), "%0.6B", go->our_node);
- sprintf (strremote,
- "%02X%02X%02X%02X%02X%02X",
- NODE(ho->his_node));
+ slprintf (strremote, sizeof(strremote), "%0.6B", ho->his_node);
argv[0] = script;
argv[1] = ifname;
argv[6] = strremote;
argv[7] = strproto_lcl;
argv[8] = strproto_rmt;
- argv[9] = go->name;
- argv[10] = ho->name;
+ argv[9] = (char *)go->name;
+ argv[10] = (char *)ho->name;
argv[11] = ipparam;
argv[12] = strpid;
argv[13] = NULL;
- run_program(script, argv, 0);
+ run_program(script, argv, 0, NULL, NULL, 0);
}
/*
};
static int
-ipxcp_printpkt(p, plen, printer, arg)
- u_char *p;
- int plen;
- void (*printer)();
- void *arg;
+ipxcp_printpkt(u_char *p, int plen,
+ void (*printer) (void *, char *, ...), void *arg)
{
int code, id, len, olen;
u_char *pstart, *optend;
switch (code) {
case IPX_NETWORK_NUMBER:
if (olen == CILEN_NETN) {
- p += CILEN_VOID;
+ p += 2;
GETLONG(cilong, p);
printer (arg, "network %s", ipx_ntoa (cilong));
}
break;
case IPX_NODE_NUMBER:
if (olen == CILEN_NODEN) {
- p += CILEN_VOID;
+ p += 2;
printer (arg, "node ");
while (p < optend) {
GETCHAR(code, p);
- printer(arg, "%.2x", code);
+ printer(arg, "%.2x", (int) (unsigned int) (unsigned char) code);
}
}
break;
case IPX_COMPRESSION_PROTOCOL:
if (olen == CILEN_COMPRESS) {
- p += CILEN_VOID;
+ p += 2;
GETSHORT (cishort, p);
- printer (arg, "compression %d", cishort);
+ printer (arg, "compression %d", (int) cishort);
}
break;
case IPX_ROUTER_PROTOCOL:
if (olen == CILEN_PROTOCOL) {
- p += CILEN_VOID;
+ p += 2;
GETSHORT (cishort, p);
- printer (arg, "router proto %d", cishort);
+ printer (arg, "router proto %d", (int) cishort);
}
break;
case IPX_ROUTER_NAME:
if (olen >= CILEN_NAME) {
- p += CILEN_VOID;
+ p += 2;
printer (arg, "router name \"");
while (p < optend) {
GETCHAR(code, p);
- if (code >= 0x20 && code < 0x7E)
- printer (arg, "%c", code);
+ if (code >= 0x20 && code <= 0x7E)
+ printer (arg, "%c", (int) (unsigned int) (unsigned char) code);
else
- printer (arg, " \\%.2x", code);
+ printer (arg, " \\%.2x", (int) (unsigned int) (unsigned char) code);
}
printer (arg, "\"");
}
break;
case IPX_COMPLETE:
if (olen == CILEN_COMPLETE) {
- p += CILEN_VOID;
+ p += 2;
printer (arg, "complete");
}
break;
while (p < optend) {
GETCHAR(code, p);
- printer(arg, " %.2x", code);
+ printer(arg, " %.2x", (int) (unsigned int) (unsigned char) code);
}
printer(arg, ">");
}
case TERMREQ:
if (len > 0 && *p >= ' ' && *p < 0x7f) {
printer(arg, " ");
- print_string(p, len, printer, arg);
+ print_string((char *)p, len, printer, arg);
p += len;
len = 0;
}
/* print the rest of the bytes in the packet */
for (; len > 0; --len) {
GETCHAR(code, p);
- printer(arg, " %.2x", code);
+ printer(arg, " %.2x", (int) (unsigned int) (unsigned char) code);
}
return p - pstart;
projects / ppp.git / blobdiff