Bonjour - First step: AutoIP compiled in and working

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Darran Shepherd / Mbed 2 deprecated Bonjour

First step: AutoIP compiled in and working

lwip/netif/ppp/lcp.c@1:4218cacaf696, 2010-06-18 (annotated)

Committer:: darran
Date:: Fri Jun 18 15:54:21 2010 +0000
Revision:: 1:4218cacaf696
Parent:: 0:55a05330f8cc

Who changed what in which revision?

User	Revision	Line number	New contents of line
darran	0:55a05330f8cc	1	/*****************************************************************************
darran	0:55a05330f8cc	2	* lcp.c - Network Link Control Protocol program file.
darran	0:55a05330f8cc	3	*
darran	0:55a05330f8cc	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
darran	0:55a05330f8cc	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
darran	0:55a05330f8cc	6	*
darran	0:55a05330f8cc	7	* The authors hereby grant permission to use, copy, modify, distribute,
darran	0:55a05330f8cc	8	* and license this software and its documentation for any purpose, provided
darran	0:55a05330f8cc	9	* that existing copyright notices are retained in all copies and that this
darran	0:55a05330f8cc	10	* notice and the following disclaimer are included verbatim in any
darran	0:55a05330f8cc	11	* distributions. No written agreement, license, or royalty fee is required
darran	0:55a05330f8cc	12	* for any of the authorized uses.
darran	0:55a05330f8cc	13	*
darran	0:55a05330f8cc	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
darran	0:55a05330f8cc	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
darran	0:55a05330f8cc	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
darran	0:55a05330f8cc	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
darran	0:55a05330f8cc	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
darran	0:55a05330f8cc	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
darran	0:55a05330f8cc	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
darran	0:55a05330f8cc	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
darran	0:55a05330f8cc	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
darran	0:55a05330f8cc	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
darran	0:55a05330f8cc	24	*
darran	0:55a05330f8cc	25	******************************************************************************
darran	0:55a05330f8cc	26	* REVISION HISTORY
darran	0:55a05330f8cc	27	*
darran	0:55a05330f8cc	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
darran	0:55a05330f8cc	29	* Ported to lwIP.
darran	0:55a05330f8cc	30	* 97-12-01 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
darran	0:55a05330f8cc	31	* Original.
darran	0:55a05330f8cc	32	*****************************************************************************/
darran	0:55a05330f8cc	33
darran	0:55a05330f8cc	34	/*
darran	0:55a05330f8cc	35	* lcp.c - PPP Link Control Protocol.
darran	0:55a05330f8cc	36	*
darran	0:55a05330f8cc	37	* Copyright (c) 1989 Carnegie Mellon University.
darran	0:55a05330f8cc	38	* All rights reserved.
darran	0:55a05330f8cc	39	*
darran	0:55a05330f8cc	40	* Redistribution and use in source and binary forms are permitted
darran	0:55a05330f8cc	41	* provided that the above copyright notice and this paragraph are
darran	0:55a05330f8cc	42	* duplicated in all such forms and that any documentation,
darran	0:55a05330f8cc	43	* advertising materials, and other materials related to such
darran	0:55a05330f8cc	44	* distribution and use acknowledge that the software was developed
darran	0:55a05330f8cc	45	* by Carnegie Mellon University. The name of the
darran	0:55a05330f8cc	46	* University may not be used to endorse or promote products derived
darran	0:55a05330f8cc	47	* from this software without specific prior written permission.
darran	0:55a05330f8cc	48	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
darran	0:55a05330f8cc	49	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
darran	0:55a05330f8cc	50	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
darran	0:55a05330f8cc	51	*/
darran	0:55a05330f8cc	52
darran	0:55a05330f8cc	53
darran	0:55a05330f8cc	54	#include "lwip/opt.h"
darran	0:55a05330f8cc	55
darran	0:55a05330f8cc	56	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
darran	0:55a05330f8cc	57
darran	0:55a05330f8cc	58	#include "ppp.h"
darran	0:55a05330f8cc	59	#include "pppdebug.h"
darran	0:55a05330f8cc	60
darran	0:55a05330f8cc	61	#include "fsm.h"
darran	0:55a05330f8cc	62	#include "chap.h"
darran	0:55a05330f8cc	63	#include "magic.h"
darran	0:55a05330f8cc	64	#include "auth.h"
darran	0:55a05330f8cc	65	#include "lcp.h"
darran	0:55a05330f8cc	66
darran	0:55a05330f8cc	67	#include <string.h>
darran	0:55a05330f8cc	68
darran	0:55a05330f8cc	69	#if PPPOE_SUPPORT
darran	0:55a05330f8cc	70	#include "netif/ppp_oe.h"
darran	0:55a05330f8cc	71	#else
darran	0:55a05330f8cc	72	#define PPPOE_MAXMTU PPP_MAXMRU
darran	0:55a05330f8cc	73	#endif
darran	0:55a05330f8cc	74
darran	0:55a05330f8cc	75	#if 0 /* UNUSED */
darran	0:55a05330f8cc	76	/*
darran	0:55a05330f8cc	77	* LCP-related command-line options.
darran	0:55a05330f8cc	78	*/
darran	0:55a05330f8cc	79	int lcp_echo_interval = 0; /* Interval between LCP echo-requests */
darran	0:55a05330f8cc	80	int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */
darran	0:55a05330f8cc	81	bool lax_recv = 0; /* accept control chars in asyncmap */
darran	0:55a05330f8cc	82
darran	0:55a05330f8cc	83	static int setescape (char **);
darran	0:55a05330f8cc	84
darran	0:55a05330f8cc	85	static option_t lcp_option_list[] = {
darran	0:55a05330f8cc	86	/* LCP options */
darran	0:55a05330f8cc	87	/* list stripped for simplicity */
darran	0:55a05330f8cc	88	{NULL}
darran	0:55a05330f8cc	89	};
darran	0:55a05330f8cc	90	#endif /* UNUSED */
darran	0:55a05330f8cc	91
darran	0:55a05330f8cc	92	/* options */
darran	0:55a05330f8cc	93	LinkPhase lcp_phase[NUM_PPP]; /* Phase of link session (RFC 1661) */
darran	0:55a05330f8cc	94	static u_int lcp_echo_interval = LCP_ECHOINTERVAL; /* Interval between LCP echo-requests */
darran	0:55a05330f8cc	95	static u_int lcp_echo_fails = LCP_MAXECHOFAILS; /* Tolerance to unanswered echo-requests */
darran	0:55a05330f8cc	96
darran	0:55a05330f8cc	97	/* global vars */
darran	0:55a05330f8cc	98	static fsm lcp_fsm[NUM_PPP]; /* LCP fsm structure (global)*/
darran	0:55a05330f8cc	99	lcp_options lcp_wantoptions[NUM_PPP]; /* Options that we want to request */
darran	0:55a05330f8cc	100	lcp_options lcp_gotoptions[NUM_PPP]; /* Options that peer ack'd */
darran	0:55a05330f8cc	101	lcp_options lcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */
darran	0:55a05330f8cc	102	lcp_options lcp_hisoptions[NUM_PPP]; /* Options that we ack'd */
darran	0:55a05330f8cc	103	ext_accm xmit_accm[NUM_PPP]; /* extended transmit ACCM */
darran	0:55a05330f8cc	104
darran	0:55a05330f8cc	105	static u32_t lcp_echos_pending = 0; /* Number of outstanding echo msgs */
darran	0:55a05330f8cc	106	static u32_t lcp_echo_number = 0; /* ID number of next echo frame */
darran	0:55a05330f8cc	107	static u32_t lcp_echo_timer_running = 0; /* TRUE if a timer is running */
darran	0:55a05330f8cc	108
darran	0:55a05330f8cc	109	/* @todo: do we really need such a large buffer? The typical 1500 bytes seem too much. */
darran	0:55a05330f8cc	110	static u_char nak_buffer[PPP_MRU] MEM_POSITION; /* where we construct a nak packet */
darran	0:55a05330f8cc	111
darran	0:55a05330f8cc	112	/*
darran	0:55a05330f8cc	113	* Callbacks for fsm code. (CI = Configuration Information)
darran	0:55a05330f8cc	114	*/
darran	0:55a05330f8cc	115	static void lcp_resetci (fsm); / Reset our CI */
darran	0:55a05330f8cc	116	static int lcp_cilen (fsm); / Return length of our CI */
darran	0:55a05330f8cc	117	static void lcp_addci (fsm, u_char, int); / Add our CI to pkt */
darran	0:55a05330f8cc	118	static int lcp_ackci (fsm, u_char, int); /* Peer ack'd our CI */
darran	0:55a05330f8cc	119	static int lcp_nakci (fsm, u_char, int); /* Peer nak'd our CI */
darran	0:55a05330f8cc	120	static int lcp_rejci (fsm, u_char, int); /* Peer rej'd our CI */
darran	0:55a05330f8cc	121	static int lcp_reqci (fsm, u_char, int, int); / Rcv peer CI */
darran	0:55a05330f8cc	122	static void lcp_up (fsm); / We're UP */
darran	0:55a05330f8cc	123	static void lcp_down (fsm); / We're DOWN */
darran	0:55a05330f8cc	124	static void lcp_starting (fsm); / We need lower layer up */
darran	0:55a05330f8cc	125	static void lcp_finished (fsm); / We need lower layer down */
darran	0:55a05330f8cc	126	static int lcp_extcode (fsm, int, u_char, u_char, int);
darran	0:55a05330f8cc	127	static void lcp_rprotrej (fsm, u_char, int);
darran	0:55a05330f8cc	128
darran	0:55a05330f8cc	129	/*
darran	0:55a05330f8cc	130	* routines to send LCP echos to peer
darran	0:55a05330f8cc	131	*/
darran	0:55a05330f8cc	132
darran	0:55a05330f8cc	133	static void lcp_echo_lowerup (int);
darran	0:55a05330f8cc	134	static void lcp_echo_lowerdown (int);
darran	0:55a05330f8cc	135	static void LcpEchoTimeout (void*);
darran	0:55a05330f8cc	136	static void lcp_received_echo_reply (fsm, int, u_char, int);
darran	0:55a05330f8cc	137	static void LcpSendEchoRequest (fsm*);
darran	0:55a05330f8cc	138	static void LcpLinkFailure (fsm*);
darran	0:55a05330f8cc	139	static void LcpEchoCheck (fsm*);
darran	0:55a05330f8cc	140
darran	0:55a05330f8cc	141	static fsm_callbacks lcp_callbacks = { /* LCP callback routines */
darran	0:55a05330f8cc	142	lcp_resetci, /* Reset our Configuration Information */
darran	0:55a05330f8cc	143	lcp_cilen, /* Length of our Configuration Information */
darran	0:55a05330f8cc	144	lcp_addci, /* Add our Configuration Information */
darran	0:55a05330f8cc	145	lcp_ackci, /* ACK our Configuration Information */
darran	0:55a05330f8cc	146	lcp_nakci, /* NAK our Configuration Information */
darran	0:55a05330f8cc	147	lcp_rejci, /* Reject our Configuration Information */
darran	0:55a05330f8cc	148	lcp_reqci, /* Request peer's Configuration Information */
darran	0:55a05330f8cc	149	lcp_up, /* Called when fsm reaches LS_OPENED state */
darran	0:55a05330f8cc	150	lcp_down, /* Called when fsm leaves LS_OPENED state */
darran	0:55a05330f8cc	151	lcp_starting, /* Called when we want the lower layer up */
darran	0:55a05330f8cc	152	lcp_finished, /* Called when we want the lower layer down */
darran	0:55a05330f8cc	153	NULL, /* Called when Protocol-Reject received */
darran	0:55a05330f8cc	154	NULL, /* Retransmission is necessary */
darran	0:55a05330f8cc	155	lcp_extcode, /* Called to handle LCP-specific codes */
darran	0:55a05330f8cc	156	"LCP" /* String name of protocol */
darran	0:55a05330f8cc	157	};
darran	0:55a05330f8cc	158
darran	0:55a05330f8cc	159	/*
darran	0:55a05330f8cc	160	* Protocol entry points.
darran	0:55a05330f8cc	161	* Some of these are called directly.
darran	0:55a05330f8cc	162	*/
darran	0:55a05330f8cc	163
darran	0:55a05330f8cc	164	static void lcp_input (int, u_char *, int);
darran	0:55a05330f8cc	165	static void lcp_protrej (int);
darran	0:55a05330f8cc	166
darran	0:55a05330f8cc	167	struct protent lcp_protent = {
darran	0:55a05330f8cc	168	PPP_LCP,
darran	0:55a05330f8cc	169	lcp_init,
darran	0:55a05330f8cc	170	lcp_input,
darran	0:55a05330f8cc	171	lcp_protrej,
darran	0:55a05330f8cc	172	lcp_lowerup,
darran	0:55a05330f8cc	173	lcp_lowerdown,
darran	0:55a05330f8cc	174	lcp_open,
darran	0:55a05330f8cc	175	lcp_close,
darran	0:55a05330f8cc	176	#if PPP_ADDITIONAL_CALLBACKS
darran	0:55a05330f8cc	177	lcp_printpkt,
darran	0:55a05330f8cc	178	NULL,
darran	0:55a05330f8cc	179	#endif /* PPP_ADDITIONAL_CALLBACKS */
darran	0:55a05330f8cc	180	1,
darran	0:55a05330f8cc	181	"LCP",
darran	0:55a05330f8cc	182	#if PPP_ADDITIONAL_CALLBACKS
darran	0:55a05330f8cc	183	NULL,
darran	0:55a05330f8cc	184	NULL,
darran	0:55a05330f8cc	185	NULL
darran	0:55a05330f8cc	186	#endif /* PPP_ADDITIONAL_CALLBACKS */
darran	0:55a05330f8cc	187	};
darran	0:55a05330f8cc	188
darran	0:55a05330f8cc	189	int lcp_loopbackfail = DEFLOOPBACKFAIL;
darran	0:55a05330f8cc	190
darran	0:55a05330f8cc	191	/*
darran	0:55a05330f8cc	192	* Length of each type of configuration option (in octets)
darran	0:55a05330f8cc	193	*/
darran	0:55a05330f8cc	194	#define CILEN_VOID 2
darran	0:55a05330f8cc	195	#define CILEN_CHAR 3
darran	0:55a05330f8cc	196	#define CILEN_SHORT 4 /* CILEN_VOID + sizeof(short) */
darran	0:55a05330f8cc	197	#define CILEN_CHAP 5 /* CILEN_VOID + sizeof(short) + 1 */
darran	0:55a05330f8cc	198	#define CILEN_LONG 6 /* CILEN_VOID + sizeof(long) */
darran	0:55a05330f8cc	199	#define CILEN_LQR 8 /* CILEN_VOID + sizeof(short) + sizeof(long) */
darran	0:55a05330f8cc	200	#define CILEN_CBCP 3
darran	0:55a05330f8cc	201
darran	0:55a05330f8cc	202	#define CODENAME(x) ((x) == CONFACK ? "ACK" : (x) == CONFNAK ? "NAK" : "REJ")
darran	0:55a05330f8cc	203
darran	0:55a05330f8cc	204	#if 0 /* UNUSED */
darran	0:55a05330f8cc	205	/*
darran	0:55a05330f8cc	206	* setescape - add chars to the set we escape on transmission.
darran	0:55a05330f8cc	207	*/
darran	0:55a05330f8cc	208	static int
darran	0:55a05330f8cc	209	setescape(argv)
darran	0:55a05330f8cc	210	char **argv;
darran	0:55a05330f8cc	211	{
darran	0:55a05330f8cc	212	int n, ret;
darran	0:55a05330f8cc	213	char p, endp;
darran	0:55a05330f8cc	214
darran	0:55a05330f8cc	215	p = *argv;
darran	0:55a05330f8cc	216	ret = 1;
darran	0:55a05330f8cc	217	while (*p) {
darran	0:55a05330f8cc	218	n = strtol(p, &endp, 16);
darran	0:55a05330f8cc	219	if (p == endp) {
darran	0:55a05330f8cc	220	option_error("escape parameter contains invalid hex number '%s'", p);
darran	0:55a05330f8cc	221	return 0;
darran	0:55a05330f8cc	222	}
darran	0:55a05330f8cc	223	p = endp;
darran	0:55a05330f8cc	224	if (n < 0 \|\| n == 0x5E \|\| n > 0xFF) {
darran	0:55a05330f8cc	225	option_error("can't escape character 0x%x", n);
darran	0:55a05330f8cc	226	ret = 0;
darran	0:55a05330f8cc	227	} else
darran	0:55a05330f8cc	228	xmit_accm[0][n >> 5] \|= 1 << (n & 0x1F);
darran	0:55a05330f8cc	229	while (p == ',' \|\| p == ' ')
darran	0:55a05330f8cc	230	++p;
darran	0:55a05330f8cc	231	}
darran	0:55a05330f8cc	232	return ret;
darran	0:55a05330f8cc	233	}
darran	0:55a05330f8cc	234	#endif /* UNUSED */
darran	0:55a05330f8cc	235
darran	0:55a05330f8cc	236	/*
darran	0:55a05330f8cc	237	* lcp_init - Initialize LCP.
darran	0:55a05330f8cc	238	*/
darran	0:55a05330f8cc	239	void
darran	0:55a05330f8cc	240	lcp_init(int unit)
darran	0:55a05330f8cc	241	{
darran	0:55a05330f8cc	242	fsm *f = &lcp_fsm[unit];
darran	0:55a05330f8cc	243	lcp_options *wo = &lcp_wantoptions[unit];
darran	0:55a05330f8cc	244	lcp_options *ao = &lcp_allowoptions[unit];
darran	0:55a05330f8cc	245
darran	0:55a05330f8cc	246	f->unit = unit;
darran	0:55a05330f8cc	247	f->protocol = PPP_LCP;
darran	0:55a05330f8cc	248	f->callbacks = &lcp_callbacks;
darran	0:55a05330f8cc	249
darran	0:55a05330f8cc	250	fsm_init(f);
darran	0:55a05330f8cc	251
darran	0:55a05330f8cc	252	wo->passive = 0;
darran	0:55a05330f8cc	253	wo->silent = 0;
darran	0:55a05330f8cc	254	wo->restart = 0; /* Set to 1 in kernels or multi-line implementations */
darran	0:55a05330f8cc	255	wo->neg_mru = 1;
darran	0:55a05330f8cc	256	wo->mru = PPP_DEFMRU;
darran	0:55a05330f8cc	257	wo->neg_asyncmap = 1;
darran	0:55a05330f8cc	258	wo->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */
darran	0:55a05330f8cc	259	wo->neg_chap = 0; /* Set to 1 on server */
darran	0:55a05330f8cc	260	wo->neg_upap = 0; /* Set to 1 on server */
darran	0:55a05330f8cc	261	wo->chap_mdtype = CHAP_DIGEST_MD5;
darran	0:55a05330f8cc	262	wo->neg_magicnumber = 1;
darran	0:55a05330f8cc	263	wo->neg_pcompression = 1;
darran	0:55a05330f8cc	264	wo->neg_accompression = 1;
darran	0:55a05330f8cc	265	wo->neg_lqr = 0; /* no LQR implementation yet */
darran	0:55a05330f8cc	266	wo->neg_cbcp = 0;
darran	0:55a05330f8cc	267
darran	0:55a05330f8cc	268	ao->neg_mru = 1;
darran	0:55a05330f8cc	269	ao->mru = PPP_MAXMRU;
darran	0:55a05330f8cc	270	ao->neg_asyncmap = 1;
darran	0:55a05330f8cc	271	ao->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */
darran	0:55a05330f8cc	272	ao->neg_chap = (CHAP_SUPPORT != 0);
darran	0:55a05330f8cc	273	ao->chap_mdtype = CHAP_DIGEST_MD5;
darran	0:55a05330f8cc	274	ao->neg_upap = (PAP_SUPPORT != 0);
darran	0:55a05330f8cc	275	ao->neg_magicnumber = 1;
darran	0:55a05330f8cc	276	ao->neg_pcompression = 1;
darran	0:55a05330f8cc	277	ao->neg_accompression = 1;
darran	0:55a05330f8cc	278	ao->neg_lqr = 0; /* no LQR implementation yet */
darran	0:55a05330f8cc	279	ao->neg_cbcp = (CBCP_SUPPORT != 0);
darran	0:55a05330f8cc	280
darran	0:55a05330f8cc	281	/*
darran	0:55a05330f8cc	282	* Set transmit escape for the flag and escape characters plus anything
darran	0:55a05330f8cc	283	* set for the allowable options.
darran	0:55a05330f8cc	284	*/
darran	0:55a05330f8cc	285	memset(xmit_accm[unit], 0, sizeof(xmit_accm[0]));
darran	0:55a05330f8cc	286	xmit_accm[unit][15] = 0x60;
darran	0:55a05330f8cc	287	xmit_accm[unit][0] = (u_char)((ao->asyncmap & 0xFF));
darran	0:55a05330f8cc	288	xmit_accm[unit][1] = (u_char)((ao->asyncmap >> 8) & 0xFF);
darran	0:55a05330f8cc	289	xmit_accm[unit][2] = (u_char)((ao->asyncmap >> 16) & 0xFF);
darran	0:55a05330f8cc	290	xmit_accm[unit][3] = (u_char)((ao->asyncmap >> 24) & 0xFF);
darran	0:55a05330f8cc	291	LCPDEBUG(LOG_INFO, ("lcp_init: xmit_accm=%X %X %X %X\n",
darran	0:55a05330f8cc	292	xmit_accm[unit][0],
darran	0:55a05330f8cc	293	xmit_accm[unit][1],
darran	0:55a05330f8cc	294	xmit_accm[unit][2],
darran	0:55a05330f8cc	295	xmit_accm[unit][3]));
darran	0:55a05330f8cc	296
darran	0:55a05330f8cc	297	lcp_phase[unit] = PHASE_INITIALIZE;
darran	0:55a05330f8cc	298	}
darran	0:55a05330f8cc	299
darran	0:55a05330f8cc	300
darran	0:55a05330f8cc	301	/*
darran	0:55a05330f8cc	302	* lcp_open - LCP is allowed to come up.
darran	0:55a05330f8cc	303	*/
darran	0:55a05330f8cc	304	void
darran	0:55a05330f8cc	305	lcp_open(int unit)
darran	0:55a05330f8cc	306	{
darran	0:55a05330f8cc	307	fsm *f = &lcp_fsm[unit];
darran	0:55a05330f8cc	308	lcp_options *wo = &lcp_wantoptions[unit];
darran	0:55a05330f8cc	309
darran	0:55a05330f8cc	310	f->flags = 0;
darran	0:55a05330f8cc	311	if (wo->passive) {
darran	0:55a05330f8cc	312	f->flags \|= OPT_PASSIVE;
darran	0:55a05330f8cc	313	}
darran	0:55a05330f8cc	314	if (wo->silent) {
darran	0:55a05330f8cc	315	f->flags \|= OPT_SILENT;
darran	0:55a05330f8cc	316	}
darran	0:55a05330f8cc	317	fsm_open(f);
darran	0:55a05330f8cc	318
darran	0:55a05330f8cc	319	lcp_phase[unit] = PHASE_ESTABLISH;
darran	0:55a05330f8cc	320	}
darran	0:55a05330f8cc	321
darran	0:55a05330f8cc	322
darran	0:55a05330f8cc	323	/*
darran	0:55a05330f8cc	324	* lcp_close - Take LCP down.
darran	0:55a05330f8cc	325	*/
darran	0:55a05330f8cc	326	void
darran	0:55a05330f8cc	327	lcp_close(int unit, char *reason)
darran	0:55a05330f8cc	328	{
darran	0:55a05330f8cc	329	fsm *f = &lcp_fsm[unit];
darran	0:55a05330f8cc	330
darran	0:55a05330f8cc	331	if (lcp_phase[unit] != PHASE_DEAD) {
darran	0:55a05330f8cc	332	lcp_phase[unit] = PHASE_TERMINATE;
darran	0:55a05330f8cc	333	}
darran	0:55a05330f8cc	334	if (f->state == LS_STOPPED && f->flags & (OPT_PASSIVE\|OPT_SILENT)) {
darran	0:55a05330f8cc	335	/*
darran	0:55a05330f8cc	336	* This action is not strictly according to the FSM in RFC1548,
darran	0:55a05330f8cc	337	* but it does mean that the program terminates if you do an
darran	0:55a05330f8cc	338	* lcp_close() in passive/silent mode when a connection hasn't
darran	0:55a05330f8cc	339	* been established.
darran	0:55a05330f8cc	340	*/
darran	0:55a05330f8cc	341	f->state = LS_CLOSED;
darran	0:55a05330f8cc	342	lcp_finished(f);
darran	0:55a05330f8cc	343	} else {
darran	0:55a05330f8cc	344	fsm_close(f, reason);
darran	0:55a05330f8cc	345	}
darran	0:55a05330f8cc	346	}
darran	0:55a05330f8cc	347
darran	0:55a05330f8cc	348
darran	0:55a05330f8cc	349	/*
darran	0:55a05330f8cc	350	* lcp_lowerup - The lower layer is up.
darran	0:55a05330f8cc	351	*/
darran	0:55a05330f8cc	352	void
darran	0:55a05330f8cc	353	lcp_lowerup(int unit)
darran	0:55a05330f8cc	354	{
darran	0:55a05330f8cc	355	lcp_options *wo = &lcp_wantoptions[unit];
darran	0:55a05330f8cc	356
darran	0:55a05330f8cc	357	/*
darran	0:55a05330f8cc	358	* Don't use A/C or protocol compression on transmission,
darran	0:55a05330f8cc	359	* but accept A/C and protocol compressed packets
darran	0:55a05330f8cc	360	* if we are going to ask for A/C and protocol compression.
darran	0:55a05330f8cc	361	*/
darran	0:55a05330f8cc	362	ppp_set_xaccm(unit, &xmit_accm[unit]);
darran	0:55a05330f8cc	363	ppp_send_config(unit, PPP_MRU, 0xffffffffl, 0, 0);
darran	0:55a05330f8cc	364	ppp_recv_config(unit, PPP_MRU, 0x00000000l,
darran	0:55a05330f8cc	365	wo->neg_pcompression, wo->neg_accompression);
darran	0:55a05330f8cc	366	peer_mru[unit] = PPP_MRU;
darran	0:55a05330f8cc	367	lcp_allowoptions[unit].asyncmap = (u_long)xmit_accm[unit][0]
darran	0:55a05330f8cc	368	\| ((u_long)xmit_accm[unit][1] << 8)
darran	0:55a05330f8cc	369	\| ((u_long)xmit_accm[unit][2] << 16)
darran	0:55a05330f8cc	370	\| ((u_long)xmit_accm[unit][3] << 24);
darran	0:55a05330f8cc	371	LCPDEBUG(LOG_INFO, ("lcp_lowerup: asyncmap=%X %X %X %X\n",
darran	0:55a05330f8cc	372	xmit_accm[unit][3],
darran	0:55a05330f8cc	373	xmit_accm[unit][2],
darran	0:55a05330f8cc	374	xmit_accm[unit][1],
darran	0:55a05330f8cc	375	xmit_accm[unit][0]));
darran	0:55a05330f8cc	376
darran	0:55a05330f8cc	377	fsm_lowerup(&lcp_fsm[unit]);
darran	0:55a05330f8cc	378	}
darran	0:55a05330f8cc	379
darran	0:55a05330f8cc	380
darran	0:55a05330f8cc	381	/*
darran	0:55a05330f8cc	382	* lcp_lowerdown - The lower layer is down.
darran	0:55a05330f8cc	383	*/
darran	0:55a05330f8cc	384	void
darran	0:55a05330f8cc	385	lcp_lowerdown(int unit)
darran	0:55a05330f8cc	386	{
darran	0:55a05330f8cc	387	fsm_lowerdown(&lcp_fsm[unit]);
darran	0:55a05330f8cc	388	}
darran	0:55a05330f8cc	389
darran	0:55a05330f8cc	390
darran	0:55a05330f8cc	391	/*
darran	0:55a05330f8cc	392	* lcp_input - Input LCP packet.
darran	0:55a05330f8cc	393	*/
darran	0:55a05330f8cc	394	static void
darran	0:55a05330f8cc	395	lcp_input(int unit, u_char *p, int len)
darran	0:55a05330f8cc	396	{
darran	0:55a05330f8cc	397	fsm *f = &lcp_fsm[unit];
darran	0:55a05330f8cc	398
darran	0:55a05330f8cc	399	fsm_input(f, p, len);
darran	0:55a05330f8cc	400	}
darran	0:55a05330f8cc	401
darran	0:55a05330f8cc	402
darran	0:55a05330f8cc	403	/*
darran	0:55a05330f8cc	404	* lcp_extcode - Handle a LCP-specific code.
darran	0:55a05330f8cc	405	*/
darran	0:55a05330f8cc	406	static int
darran	0:55a05330f8cc	407	lcp_extcode(fsm f, int code, u_char id, u_char inp, int len)
darran	0:55a05330f8cc	408	{
darran	0:55a05330f8cc	409	u_char *magp;
darran	0:55a05330f8cc	410
darran	0:55a05330f8cc	411	switch( code ){
darran	0:55a05330f8cc	412	case PROTREJ:
darran	0:55a05330f8cc	413	lcp_rprotrej(f, inp, len);
darran	0:55a05330f8cc	414	break;
darran	0:55a05330f8cc	415
darran	0:55a05330f8cc	416	case ECHOREQ:
darran	0:55a05330f8cc	417	if (f->state != LS_OPENED) {
darran	0:55a05330f8cc	418	break;
darran	0:55a05330f8cc	419	}
darran	0:55a05330f8cc	420	LCPDEBUG(LOG_INFO, ("lcp: Echo-Request, Rcvd id %d\n", id));
darran	0:55a05330f8cc	421	magp = inp;
darran	0:55a05330f8cc	422	PUTLONG(lcp_gotoptions[f->unit].magicnumber, magp);
darran	0:55a05330f8cc	423	fsm_sdata(f, ECHOREP, id, inp, len);
darran	0:55a05330f8cc	424	break;
darran	0:55a05330f8cc	425
darran	0:55a05330f8cc	426	case ECHOREP:
darran	0:55a05330f8cc	427	lcp_received_echo_reply(f, id, inp, len);
darran	0:55a05330f8cc	428	break;
darran	0:55a05330f8cc	429
darran	0:55a05330f8cc	430	case DISCREQ:
darran	0:55a05330f8cc	431	break;
darran	0:55a05330f8cc	432
darran	0:55a05330f8cc	433	default:
darran	0:55a05330f8cc	434	return 0;
darran	0:55a05330f8cc	435	}
darran	0:55a05330f8cc	436	return 1;
darran	0:55a05330f8cc	437	}
darran	0:55a05330f8cc	438
darran	0:55a05330f8cc	439
darran	0:55a05330f8cc	440	/*
darran	0:55a05330f8cc	441	* lcp_rprotrej - Receive an Protocol-Reject.
darran	0:55a05330f8cc	442	*
darran	0:55a05330f8cc	443	* Figure out which protocol is rejected and inform it.
darran	0:55a05330f8cc	444	*/
darran	0:55a05330f8cc	445	static void
darran	0:55a05330f8cc	446	lcp_rprotrej(fsm f, u_char inp, int len)
darran	0:55a05330f8cc	447	{
darran	0:55a05330f8cc	448	int i;
darran	0:55a05330f8cc	449	struct protent *protp;
darran	0:55a05330f8cc	450	u_short prot;
darran	0:55a05330f8cc	451
darran	0:55a05330f8cc	452	if (len < (int)sizeof (u_short)) {
darran	0:55a05330f8cc	453	LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd short Protocol-Reject packet!\n"));
darran	0:55a05330f8cc	454	return;
darran	0:55a05330f8cc	455	}
darran	0:55a05330f8cc	456
darran	0:55a05330f8cc	457	GETSHORT(prot, inp);
darran	0:55a05330f8cc	458
darran	0:55a05330f8cc	459	LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd Protocol-Reject packet for %x!\n", prot));
darran	0:55a05330f8cc	460
darran	0:55a05330f8cc	461	/*
darran	0:55a05330f8cc	462	* Protocol-Reject packets received in any state other than the LCP
darran	0:55a05330f8cc	463	* LS_OPENED state SHOULD be silently discarded.
darran	0:55a05330f8cc	464	*/
darran	0:55a05330f8cc	465	if( f->state != LS_OPENED ) {
darran	0:55a05330f8cc	466	LCPDEBUG(LOG_INFO, ("Protocol-Reject discarded: LCP in state %d\n", f->state));
darran	0:55a05330f8cc	467	return;
darran	0:55a05330f8cc	468	}
darran	0:55a05330f8cc	469
darran	0:55a05330f8cc	470	/*
darran	0:55a05330f8cc	471	* Upcall the proper Protocol-Reject routine.
darran	0:55a05330f8cc	472	*/
darran	0:55a05330f8cc	473	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
darran	0:55a05330f8cc	474	if (protp->protocol == prot && protp->enabled_flag) {
darran	0:55a05330f8cc	475	(*protp->protrej)(f->unit);
darran	0:55a05330f8cc	476	return;
darran	0:55a05330f8cc	477	}
darran	0:55a05330f8cc	478	}
darran	0:55a05330f8cc	479
darran	0:55a05330f8cc	480	LCPDEBUG(LOG_WARNING, ("Protocol-Reject for unsupported protocol 0x%x\n", prot));
darran	0:55a05330f8cc	481	}
darran	0:55a05330f8cc	482
darran	0:55a05330f8cc	483
darran	0:55a05330f8cc	484	/*
darran	0:55a05330f8cc	485	* lcp_protrej - A Protocol-Reject was received.
darran	0:55a05330f8cc	486	*/
darran	0:55a05330f8cc	487	static void
darran	0:55a05330f8cc	488	lcp_protrej(int unit)
darran	0:55a05330f8cc	489	{
darran	0:55a05330f8cc	490	LWIP_UNUSED_ARG(unit);
darran	0:55a05330f8cc	491	/*
darran	0:55a05330f8cc	492	* Can't reject LCP!
darran	0:55a05330f8cc	493	*/
darran	0:55a05330f8cc	494	LCPDEBUG(LOG_WARNING, ("lcp_protrej: Received Protocol-Reject for LCP!\n"));
darran	0:55a05330f8cc	495	fsm_protreject(&lcp_fsm[unit]);
darran	0:55a05330f8cc	496	}
darran	0:55a05330f8cc	497
darran	0:55a05330f8cc	498
darran	0:55a05330f8cc	499	/*
darran	0:55a05330f8cc	500	* lcp_sprotrej - Send a Protocol-Reject for some protocol.
darran	0:55a05330f8cc	501	*/
darran	0:55a05330f8cc	502	void
darran	0:55a05330f8cc	503	lcp_sprotrej(int unit, u_char *p, int len)
darran	0:55a05330f8cc	504	{
darran	0:55a05330f8cc	505	/*
darran	0:55a05330f8cc	506	* Send back the protocol and the information field of the
darran	0:55a05330f8cc	507	* rejected packet. We only get here if LCP is in the LS_OPENED state.
darran	0:55a05330f8cc	508	*/
darran	0:55a05330f8cc	509
darran	0:55a05330f8cc	510	fsm_sdata(&lcp_fsm[unit], PROTREJ, ++lcp_fsm[unit].id, p, len);
darran	0:55a05330f8cc	511	}
darran	0:55a05330f8cc	512
darran	0:55a05330f8cc	513
darran	0:55a05330f8cc	514	/*
darran	0:55a05330f8cc	515	* lcp_resetci - Reset our CI.
darran	0:55a05330f8cc	516	*/
darran	0:55a05330f8cc	517	static void
darran	0:55a05330f8cc	518	lcp_resetci(fsm *f)
darran	0:55a05330f8cc	519	{
darran	0:55a05330f8cc	520	lcp_wantoptions[f->unit].magicnumber = magic();
darran	0:55a05330f8cc	521	lcp_wantoptions[f->unit].numloops = 0;
darran	0:55a05330f8cc	522	lcp_gotoptions[f->unit] = lcp_wantoptions[f->unit];
darran	0:55a05330f8cc	523	peer_mru[f->unit] = PPP_MRU;
darran	0:55a05330f8cc	524	auth_reset(f->unit);
darran	0:55a05330f8cc	525	}
darran	0:55a05330f8cc	526
darran	0:55a05330f8cc	527
darran	0:55a05330f8cc	528	/*
darran	0:55a05330f8cc	529	* lcp_cilen - Return length of our CI.
darran	0:55a05330f8cc	530	*/
darran	0:55a05330f8cc	531	static int
darran	0:55a05330f8cc	532	lcp_cilen(fsm *f)
darran	0:55a05330f8cc	533	{
darran	0:55a05330f8cc	534	lcp_options *go = &lcp_gotoptions[f->unit];
darran	0:55a05330f8cc	535
darran	0:55a05330f8cc	536	#define LENCIVOID(neg) ((neg) ? CILEN_VOID : 0)
darran	0:55a05330f8cc	537	#define LENCICHAP(neg) ((neg) ? CILEN_CHAP : 0)
darran	0:55a05330f8cc	538	#define LENCISHORT(neg) ((neg) ? CILEN_SHORT : 0)
darran	0:55a05330f8cc	539	#define LENCILONG(neg) ((neg) ? CILEN_LONG : 0)
darran	0:55a05330f8cc	540	#define LENCILQR(neg) ((neg) ? CILEN_LQR: 0)
darran	0:55a05330f8cc	541	#define LENCICBCP(neg) ((neg) ? CILEN_CBCP: 0)
darran	0:55a05330f8cc	542	/*
darran	0:55a05330f8cc	543	* NB: we only ask for one of CHAP and UPAP, even if we will
darran	0:55a05330f8cc	544	* accept either.
darran	0:55a05330f8cc	545	*/
darran	0:55a05330f8cc	546	return (LENCISHORT(go->neg_mru && go->mru != PPP_DEFMRU) +
darran	0:55a05330f8cc	547	LENCILONG(go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) +
darran	0:55a05330f8cc	548	LENCICHAP(go->neg_chap) +
darran	0:55a05330f8cc	549	LENCISHORT(!go->neg_chap && go->neg_upap) +
darran	0:55a05330f8cc	550	LENCILQR(go->neg_lqr) +
darran	0:55a05330f8cc	551	LENCICBCP(go->neg_cbcp) +
darran	0:55a05330f8cc	552	LENCILONG(go->neg_magicnumber) +
darran	0:55a05330f8cc	553	LENCIVOID(go->neg_pcompression) +
darran	0:55a05330f8cc	554	LENCIVOID(go->neg_accompression));
darran	0:55a05330f8cc	555	}
darran	0:55a05330f8cc	556
darran	0:55a05330f8cc	557
darran	0:55a05330f8cc	558	/*
darran	0:55a05330f8cc	559	* lcp_addci - Add our desired CIs to a packet.
darran	0:55a05330f8cc	560	*/
darran	0:55a05330f8cc	561	static void
darran	0:55a05330f8cc	562	lcp_addci(fsm f, u_char ucp, int *lenp)
darran	0:55a05330f8cc	563	{
darran	0:55a05330f8cc	564	lcp_options *go = &lcp_gotoptions[f->unit];
darran	0:55a05330f8cc	565	u_char *start_ucp = ucp;
darran	0:55a05330f8cc	566
darran	0:55a05330f8cc	567	#define ADDCIVOID(opt, neg) \
darran	0:55a05330f8cc	568	if (neg) { \
darran	0:55a05330f8cc	569	LCPDEBUG(LOG_INFO, ("lcp_addci: opt=%d\n", opt)); \
darran	0:55a05330f8cc	570	PUTCHAR(opt, ucp); \
darran	0:55a05330f8cc	571	PUTCHAR(CILEN_VOID, ucp); \
darran	0:55a05330f8cc	572	}
darran	0:55a05330f8cc	573	#define ADDCISHORT(opt, neg, val) \
darran	0:55a05330f8cc	574	if (neg) { \
darran	0:55a05330f8cc	575	LCPDEBUG(LOG_INFO, ("lcp_addci: INT opt=%d %X\n", opt, val)); \
darran	0:55a05330f8cc	576	PUTCHAR(opt, ucp); \
darran	0:55a05330f8cc	577	PUTCHAR(CILEN_SHORT, ucp); \
darran	0:55a05330f8cc	578	PUTSHORT(val, ucp); \
darran	0:55a05330f8cc	579	}
darran	0:55a05330f8cc	580	#define ADDCICHAP(opt, neg, val, digest) \
darran	0:55a05330f8cc	581	if (neg) { \
darran	0:55a05330f8cc	582	LCPDEBUG(LOG_INFO, ("lcp_addci: CHAP opt=%d %X\n", opt, val)); \
darran	0:55a05330f8cc	583	PUTCHAR(opt, ucp); \
darran	0:55a05330f8cc	584	PUTCHAR(CILEN_CHAP, ucp); \
darran	0:55a05330f8cc	585	PUTSHORT(val, ucp); \
darran	0:55a05330f8cc	586	PUTCHAR(digest, ucp); \
darran	0:55a05330f8cc	587	}
darran	0:55a05330f8cc	588	#define ADDCILONG(opt, neg, val) \
darran	0:55a05330f8cc	589	if (neg) { \
darran	0:55a05330f8cc	590	LCPDEBUG(LOG_INFO, ("lcp_addci: L opt=%d %lX\n", opt, val)); \
darran	0:55a05330f8cc	591	PUTCHAR(opt, ucp); \
darran	0:55a05330f8cc	592	PUTCHAR(CILEN_LONG, ucp); \
darran	0:55a05330f8cc	593	PUTLONG(val, ucp); \
darran	0:55a05330f8cc	594	}
darran	0:55a05330f8cc	595	#define ADDCILQR(opt, neg, val) \
darran	0:55a05330f8cc	596	if (neg) { \
darran	0:55a05330f8cc	597	LCPDEBUG(LOG_INFO, ("lcp_addci: LQR opt=%d %lX\n", opt, val)); \
darran	0:55a05330f8cc	598	PUTCHAR(opt, ucp); \
darran	0:55a05330f8cc	599	PUTCHAR(CILEN_LQR, ucp); \
darran	0:55a05330f8cc	600	PUTSHORT(PPP_LQR, ucp); \
darran	0:55a05330f8cc	601	PUTLONG(val, ucp); \
darran	0:55a05330f8cc	602	}
darran	0:55a05330f8cc	603	#define ADDCICHAR(opt, neg, val) \
darran	0:55a05330f8cc	604	if (neg) { \
darran	0:55a05330f8cc	605	LCPDEBUG(LOG_INFO, ("lcp_addci: CHAR opt=%d %X '%z'\n", opt, val, val)); \
darran	0:55a05330f8cc	606	PUTCHAR(opt, ucp); \
darran	0:55a05330f8cc	607	PUTCHAR(CILEN_CHAR, ucp); \
darran	0:55a05330f8cc	608	PUTCHAR(val, ucp); \
darran	0:55a05330f8cc	609	}
darran	0:55a05330f8cc	610
darran	0:55a05330f8cc	611	ADDCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru);
darran	0:55a05330f8cc	612	ADDCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap);
darran	0:55a05330f8cc	613	ADDCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype);
darran	0:55a05330f8cc	614	ADDCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP);
darran	0:55a05330f8cc	615	ADDCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period);
darran	0:55a05330f8cc	616	ADDCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT);
darran	0:55a05330f8cc	617	ADDCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber);
darran	0:55a05330f8cc	618	ADDCIVOID(CI_PCOMPRESSION, go->neg_pcompression);
darran	0:55a05330f8cc	619	ADDCIVOID(CI_ACCOMPRESSION, go->neg_accompression);
darran	0:55a05330f8cc	620
darran	0:55a05330f8cc	621	if (ucp - start_ucp != *lenp) {
darran	0:55a05330f8cc	622	/* this should never happen, because peer_mtu should be 1500 */
darran	0:55a05330f8cc	623	LCPDEBUG(LOG_ERR, ("Bug in lcp_addci: wrong length\n"));
darran	0:55a05330f8cc	624	}
darran	0:55a05330f8cc	625	}
darran	0:55a05330f8cc	626
darran	0:55a05330f8cc	627
darran	0:55a05330f8cc	628	/*
darran	0:55a05330f8cc	629	* lcp_ackci - Ack our CIs.
darran	0:55a05330f8cc	630	* This should not modify any state if the Ack is bad.
darran	0:55a05330f8cc	631	*
darran	0:55a05330f8cc	632	* Returns:
darran	0:55a05330f8cc	633	* 0 - Ack was bad.
darran	0:55a05330f8cc	634	* 1 - Ack was good.
darran	0:55a05330f8cc	635	*/
darran	0:55a05330f8cc	636	static int
darran	0:55a05330f8cc	637	lcp_ackci(fsm f, u_char p, int len)
darran	0:55a05330f8cc	638	{
darran	0:55a05330f8cc	639	lcp_options *go = &lcp_gotoptions[f->unit];
darran	0:55a05330f8cc	640	u_char cilen, citype, cichar;
darran	0:55a05330f8cc	641	u_short cishort;
darran	0:55a05330f8cc	642	u32_t cilong;
darran	0:55a05330f8cc	643
darran	0:55a05330f8cc	644	/*
darran	0:55a05330f8cc	645	* CIs must be in exactly the same order that we sent.
darran	0:55a05330f8cc	646	* Check packet length and CI length at each step.
darran	0:55a05330f8cc	647	* If we find any deviations, then this packet is bad.
darran	0:55a05330f8cc	648	*/
darran	0:55a05330f8cc	649	#define ACKCIVOID(opt, neg) \
darran	0:55a05330f8cc	650	if (neg) { \
darran	0:55a05330f8cc	651	if ((len -= CILEN_VOID) < 0) \
darran	0:55a05330f8cc	652	goto bad; \
darran	0:55a05330f8cc	653	GETCHAR(citype, p); \
darran	0:55a05330f8cc	654	GETCHAR(cilen, p); \
darran	0:55a05330f8cc	655	if (cilen != CILEN_VOID \|\| citype != opt) \
darran	0:55a05330f8cc	656	goto bad; \
darran	0:55a05330f8cc	657	}
darran	0:55a05330f8cc	658	#define ACKCISHORT(opt, neg, val) \
darran	0:55a05330f8cc	659	if (neg) { \
darran	0:55a05330f8cc	660	if ((len -= CILEN_SHORT) < 0) \
darran	0:55a05330f8cc	661	goto bad; \
darran	0:55a05330f8cc	662	GETCHAR(citype, p); \
darran	0:55a05330f8cc	663	GETCHAR(cilen, p); \
darran	0:55a05330f8cc	664	if (cilen != CILEN_SHORT \|\| citype != opt) \
darran	0:55a05330f8cc	665	goto bad; \
darran	0:55a05330f8cc	666	GETSHORT(cishort, p); \
darran	0:55a05330f8cc	667	if (cishort != val) \
darran	0:55a05330f8cc	668	goto bad; \
darran	0:55a05330f8cc	669	}
darran	0:55a05330f8cc	670	#define ACKCICHAR(opt, neg, val) \
darran	0:55a05330f8cc	671	if (neg) { \
darran	0:55a05330f8cc	672	if ((len -= CILEN_CHAR) < 0) \
darran	0:55a05330f8cc	673	goto bad; \
darran	0:55a05330f8cc	674	GETCHAR(citype, p); \
darran	0:55a05330f8cc	675	GETCHAR(cilen, p); \
darran	0:55a05330f8cc	676	if (cilen != CILEN_CHAR \|\| citype != opt) \
darran	0:55a05330f8cc	677	goto bad; \
darran	0:55a05330f8cc	678	GETCHAR(cichar, p); \
darran	0:55a05330f8cc	679	if (cichar != val) \
darran	0:55a05330f8cc	680	goto bad; \
darran	0:55a05330f8cc	681	}
darran	0:55a05330f8cc	682	#define ACKCICHAP(opt, neg, val, digest) \
darran	0:55a05330f8cc	683	if (neg) { \
darran	0:55a05330f8cc	684	if ((len -= CILEN_CHAP) < 0) \
darran	0:55a05330f8cc	685	goto bad; \
darran	0:55a05330f8cc	686	GETCHAR(citype, p); \
darran	0:55a05330f8cc	687	GETCHAR(cilen, p); \
darran	0:55a05330f8cc	688	if (cilen != CILEN_CHAP \|\| citype != opt) \
darran	0:55a05330f8cc	689	goto bad; \
darran	0:55a05330f8cc	690	GETSHORT(cishort, p); \
darran	0:55a05330f8cc	691	if (cishort != val) \
darran	0:55a05330f8cc	692	goto bad; \
darran	0:55a05330f8cc	693	GETCHAR(cichar, p); \
darran	0:55a05330f8cc	694	if (cichar != digest) \
darran	0:55a05330f8cc	695	goto bad; \
darran	0:55a05330f8cc	696	}
darran	0:55a05330f8cc	697	#define ACKCILONG(opt, neg, val) \
darran	0:55a05330f8cc	698	if (neg) { \
darran	0:55a05330f8cc	699	if ((len -= CILEN_LONG) < 0) \
darran	0:55a05330f8cc	700	goto bad; \
darran	0:55a05330f8cc	701	GETCHAR(citype, p); \
darran	0:55a05330f8cc	702	GETCHAR(cilen, p); \
darran	0:55a05330f8cc	703	if (cilen != CILEN_LONG \|\| citype != opt) \
darran	0:55a05330f8cc	704	goto bad; \
darran	0:55a05330f8cc	705	GETLONG(cilong, p); \
darran	0:55a05330f8cc	706	if (cilong != val) \
darran	0:55a05330f8cc	707	goto bad; \
darran	0:55a05330f8cc	708	}
darran	0:55a05330f8cc	709	#define ACKCILQR(opt, neg, val) \
darran	0:55a05330f8cc	710	if (neg) { \
darran	0:55a05330f8cc	711	if ((len -= CILEN_LQR) < 0) \
darran	0:55a05330f8cc	712	goto bad; \
darran	0:55a05330f8cc	713	GETCHAR(citype, p); \
darran	0:55a05330f8cc	714	GETCHAR(cilen, p); \
darran	0:55a05330f8cc	715	if (cilen != CILEN_LQR \|\| citype != opt) \
darran	0:55a05330f8cc	716	goto bad; \
darran	0:55a05330f8cc	717	GETSHORT(cishort, p); \
darran	0:55a05330f8cc	718	if (cishort != PPP_LQR) \
darran	0:55a05330f8cc	719	goto bad; \
darran	0:55a05330f8cc	720	GETLONG(cilong, p); \
darran	0:55a05330f8cc	721	if (cilong != val) \
darran	0:55a05330f8cc	722	goto bad; \
darran	0:55a05330f8cc	723	}
darran	0:55a05330f8cc	724
darran	0:55a05330f8cc	725	ACKCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru);
darran	0:55a05330f8cc	726	ACKCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap);
darran	0:55a05330f8cc	727	ACKCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype);
darran	0:55a05330f8cc	728	ACKCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP);
darran	0:55a05330f8cc	729	ACKCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period);
darran	0:55a05330f8cc	730	ACKCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT);
darran	0:55a05330f8cc	731	ACKCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber);
darran	0:55a05330f8cc	732	ACKCIVOID(CI_PCOMPRESSION, go->neg_pcompression);
darran	0:55a05330f8cc	733	ACKCIVOID(CI_ACCOMPRESSION, go->neg_accompression);
darran	0:55a05330f8cc	734
darran	0:55a05330f8cc	735	/*
darran	0:55a05330f8cc	736	* If there are any remaining CIs, then this packet is bad.
darran	0:55a05330f8cc	737	*/
darran	0:55a05330f8cc	738	if (len != 0) {
darran	0:55a05330f8cc	739	goto bad;
darran	0:55a05330f8cc	740	}
darran	0:55a05330f8cc	741	LCPDEBUG(LOG_INFO, ("lcp_acki: Ack\n"));
darran	0:55a05330f8cc	742	return (1);
darran	0:55a05330f8cc	743	bad:
darran	0:55a05330f8cc	744	LCPDEBUG(LOG_WARNING, ("lcp_acki: received bad Ack!\n"));
darran	0:55a05330f8cc	745	return (0);
darran	0:55a05330f8cc	746	}
darran	0:55a05330f8cc	747
darran	0:55a05330f8cc	748
darran	0:55a05330f8cc	749	/*
darran	0:55a05330f8cc	750	* lcp_nakci - Peer has sent a NAK for some of our CIs.
darran	0:55a05330f8cc	751	* This should not modify any state if the Nak is bad
darran	0:55a05330f8cc	752	* or if LCP is in the LS_OPENED state.
darran	0:55a05330f8cc	753	*
darran	0:55a05330f8cc	754	* Returns:
darran	0:55a05330f8cc	755	* 0 - Nak was bad.
darran	0:55a05330f8cc	756	* 1 - Nak was good.
darran	0:55a05330f8cc	757	*/
darran	0:55a05330f8cc	758	static int
darran	0:55a05330f8cc	759	lcp_nakci(fsm f, u_char p, int len)
darran	0:55a05330f8cc	760	{
darran	0:55a05330f8cc	761	lcp_options *go = &lcp_gotoptions[f->unit];
darran	0:55a05330f8cc	762	lcp_options *wo = &lcp_wantoptions[f->unit];
darran	0:55a05330f8cc	763	u_char citype, cichar, *next;
darran	0:55a05330f8cc	764	u_short cishort;
darran	0:55a05330f8cc	765	u32_t cilong;
darran	0:55a05330f8cc	766	lcp_options no; /* options we've seen Naks for */
darran	0:55a05330f8cc	767	lcp_options try; /* options to request next time */
darran	0:55a05330f8cc	768	int looped_back = 0;
darran	0:55a05330f8cc	769	int cilen;
darran	0:55a05330f8cc	770
darran	0:55a05330f8cc	771	BZERO(&no, sizeof(no));
darran	0:55a05330f8cc	772	try = *go;
darran	0:55a05330f8cc	773
darran	0:55a05330f8cc	774	/*
darran	0:55a05330f8cc	775	* Any Nak'd CIs must be in exactly the same order that we sent.
darran	0:55a05330f8cc	776	* Check packet length and CI length at each step.
darran	0:55a05330f8cc	777	* If we find any deviations, then this packet is bad.
darran	0:55a05330f8cc	778	*/
darran	0:55a05330f8cc	779	#define NAKCIVOID(opt, neg, code) \
darran	0:55a05330f8cc	780	if (go->neg && \
darran	0:55a05330f8cc	781	len >= CILEN_VOID && \
darran	0:55a05330f8cc	782	p[1] == CILEN_VOID && \
darran	0:55a05330f8cc	783	p[0] == opt) { \
darran	0:55a05330f8cc	784	len -= CILEN_VOID; \
darran	0:55a05330f8cc	785	INCPTR(CILEN_VOID, p); \
darran	0:55a05330f8cc	786	no.neg = 1; \
darran	0:55a05330f8cc	787	code \
darran	0:55a05330f8cc	788	}
darran	0:55a05330f8cc	789	#define NAKCICHAP(opt, neg, code) \
darran	0:55a05330f8cc	790	if (go->neg && \
darran	0:55a05330f8cc	791	len >= CILEN_CHAP && \
darran	0:55a05330f8cc	792	p[1] == CILEN_CHAP && \
darran	0:55a05330f8cc	793	p[0] == opt) { \
darran	0:55a05330f8cc	794	len -= CILEN_CHAP; \
darran	0:55a05330f8cc	795	INCPTR(2, p); \
darran	0:55a05330f8cc	796	GETSHORT(cishort, p); \
darran	0:55a05330f8cc	797	GETCHAR(cichar, p); \
darran	0:55a05330f8cc	798	no.neg = 1; \
darran	0:55a05330f8cc	799	code \
darran	0:55a05330f8cc	800	}
darran	0:55a05330f8cc	801	#define NAKCICHAR(opt, neg, code) \
darran	0:55a05330f8cc	802	if (go->neg && \
darran	0:55a05330f8cc	803	len >= CILEN_CHAR && \
darran	0:55a05330f8cc	804	p[1] == CILEN_CHAR && \
darran	0:55a05330f8cc	805	p[0] == opt) { \
darran	0:55a05330f8cc	806	len -= CILEN_CHAR; \
darran	0:55a05330f8cc	807	INCPTR(2, p); \
darran	0:55a05330f8cc	808	GETCHAR(cichar, p); \
darran	0:55a05330f8cc	809	no.neg = 1; \
darran	0:55a05330f8cc	810	code \
darran	0:55a05330f8cc	811	}
darran	0:55a05330f8cc	812	#define NAKCISHORT(opt, neg, code) \
darran	0:55a05330f8cc	813	if (go->neg && \
darran	0:55a05330f8cc	814	len >= CILEN_SHORT && \
darran	0:55a05330f8cc	815	p[1] == CILEN_SHORT && \
darran	0:55a05330f8cc	816	p[0] == opt) { \
darran	0:55a05330f8cc	817	len -= CILEN_SHORT; \
darran	0:55a05330f8cc	818	INCPTR(2, p); \
darran	0:55a05330f8cc	819	GETSHORT(cishort, p); \
darran	0:55a05330f8cc	820	no.neg = 1; \
darran	0:55a05330f8cc	821	code \
darran	0:55a05330f8cc	822	}
darran	0:55a05330f8cc	823	#define NAKCILONG(opt, neg, code) \
darran	0:55a05330f8cc	824	if (go->neg && \
darran	0:55a05330f8cc	825	len >= CILEN_LONG && \
darran	0:55a05330f8cc	826	p[1] == CILEN_LONG && \
darran	0:55a05330f8cc	827	p[0] == opt) { \
darran	0:55a05330f8cc	828	len -= CILEN_LONG; \
darran	0:55a05330f8cc	829	INCPTR(2, p); \
darran	0:55a05330f8cc	830	GETLONG(cilong, p); \
darran	0:55a05330f8cc	831	no.neg = 1; \
darran	0:55a05330f8cc	832	code \
darran	0:55a05330f8cc	833	}
darran	0:55a05330f8cc	834	#define NAKCILQR(opt, neg, code) \
darran	0:55a05330f8cc	835	if (go->neg && \
darran	0:55a05330f8cc	836	len >= CILEN_LQR && \
darran	0:55a05330f8cc	837	p[1] == CILEN_LQR && \
darran	0:55a05330f8cc	838	p[0] == opt) { \
darran	0:55a05330f8cc	839	len -= CILEN_LQR; \
darran	0:55a05330f8cc	840	INCPTR(2, p); \
darran	0:55a05330f8cc	841	GETSHORT(cishort, p); \
darran	0:55a05330f8cc	842	GETLONG(cilong, p); \
darran	0:55a05330f8cc	843	no.neg = 1; \
darran	0:55a05330f8cc	844	code \
darran	0:55a05330f8cc	845	}
darran	0:55a05330f8cc	846
darran	0:55a05330f8cc	847	/*
darran	0:55a05330f8cc	848	* We don't care if they want to send us smaller packets than
darran	0:55a05330f8cc	849	* we want. Therefore, accept any MRU less than what we asked for,
darran	0:55a05330f8cc	850	* but then ignore the new value when setting the MRU in the kernel.
darran	0:55a05330f8cc	851	* If they send us a bigger MRU than what we asked, accept it, up to
darran	0:55a05330f8cc	852	* the limit of the default MRU we'd get if we didn't negotiate.
darran	0:55a05330f8cc	853	*/
darran	0:55a05330f8cc	854	if (go->neg_mru && go->mru != PPP_DEFMRU) {
darran	0:55a05330f8cc	855	NAKCISHORT(CI_MRU, neg_mru,
darran	0:55a05330f8cc	856	if (cishort <= wo->mru \|\| cishort < PPP_DEFMRU) {
darran	0:55a05330f8cc	857	try.mru = cishort;
darran	0:55a05330f8cc	858	}
darran	0:55a05330f8cc	859	);
darran	0:55a05330f8cc	860	}
darran	0:55a05330f8cc	861
darran	0:55a05330f8cc	862	/*
darran	0:55a05330f8cc	863	* Add any characters they want to our (receive-side) asyncmap.
darran	0:55a05330f8cc	864	*/
darran	0:55a05330f8cc	865	if (go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) {
darran	0:55a05330f8cc	866	NAKCILONG(CI_ASYNCMAP, neg_asyncmap,
darran	0:55a05330f8cc	867	try.asyncmap = go->asyncmap \| cilong;
darran	0:55a05330f8cc	868	);
darran	0:55a05330f8cc	869	}
darran	0:55a05330f8cc	870
darran	0:55a05330f8cc	871	/*
darran	0:55a05330f8cc	872	* If they've nak'd our authentication-protocol, check whether
darran	0:55a05330f8cc	873	* they are proposing a different protocol, or a different
darran	0:55a05330f8cc	874	* hash algorithm for CHAP.
darran	0:55a05330f8cc	875	*/
darran	0:55a05330f8cc	876	if ((go->neg_chap \|\| go->neg_upap)
darran	0:55a05330f8cc	877	&& len >= CILEN_SHORT
darran	0:55a05330f8cc	878	&& p[0] == CI_AUTHTYPE && p[1] >= CILEN_SHORT && p[1] <= len) {
darran	0:55a05330f8cc	879	cilen = p[1];
darran	0:55a05330f8cc	880	len -= cilen;
darran	0:55a05330f8cc	881	no.neg_chap = go->neg_chap;
darran	0:55a05330f8cc	882	no.neg_upap = go->neg_upap;
darran	0:55a05330f8cc	883	INCPTR(2, p);
darran	0:55a05330f8cc	884	GETSHORT(cishort, p);
darran	0:55a05330f8cc	885	if (cishort == PPP_PAP && cilen == CILEN_SHORT) {
darran	0:55a05330f8cc	886	/*
darran	0:55a05330f8cc	887	* If we were asking for CHAP, they obviously don't want to do it.
darran	0:55a05330f8cc	888	* If we weren't asking for CHAP, then we were asking for PAP,
darran	0:55a05330f8cc	889	* in which case this Nak is bad.
darran	0:55a05330f8cc	890	*/
darran	0:55a05330f8cc	891	if (!go->neg_chap) {
darran	0:55a05330f8cc	892	goto bad;
darran	0:55a05330f8cc	893	}
darran	0:55a05330f8cc	894	try.neg_chap = 0;
darran	0:55a05330f8cc	895
darran	0:55a05330f8cc	896	} else if (cishort == PPP_CHAP && cilen == CILEN_CHAP) {
darran	0:55a05330f8cc	897	GETCHAR(cichar, p);
darran	0:55a05330f8cc	898	if (go->neg_chap) {
darran	0:55a05330f8cc	899	/*
darran	0:55a05330f8cc	900	* We were asking for CHAP/MD5; they must want a different
darran	0:55a05330f8cc	901	* algorithm. If they can't do MD5, we'll have to stop
darran	0:55a05330f8cc	902	* asking for CHAP.
darran	0:55a05330f8cc	903	*/
darran	0:55a05330f8cc	904	if (cichar != go->chap_mdtype) {
darran	0:55a05330f8cc	905	try.neg_chap = 0;
darran	0:55a05330f8cc	906	}
darran	0:55a05330f8cc	907	} else {
darran	0:55a05330f8cc	908	/*
darran	0:55a05330f8cc	909	* Stop asking for PAP if we were asking for it.
darran	0:55a05330f8cc	910	*/
darran	0:55a05330f8cc	911	try.neg_upap = 0;
darran	0:55a05330f8cc	912	}
darran	0:55a05330f8cc	913
darran	0:55a05330f8cc	914	} else {
darran	0:55a05330f8cc	915	/*
darran	0:55a05330f8cc	916	* We don't recognize what they're suggesting.
darran	0:55a05330f8cc	917	* Stop asking for what we were asking for.
darran	0:55a05330f8cc	918	*/
darran	0:55a05330f8cc	919	if (go->neg_chap) {
darran	0:55a05330f8cc	920	try.neg_chap = 0;
darran	0:55a05330f8cc	921	} else {
darran	0:55a05330f8cc	922	try.neg_upap = 0;
darran	0:55a05330f8cc	923	}
darran	0:55a05330f8cc	924	p += cilen - CILEN_SHORT;
darran	0:55a05330f8cc	925	}
darran	0:55a05330f8cc	926	}
darran	0:55a05330f8cc	927
darran	0:55a05330f8cc	928	/*
darran	0:55a05330f8cc	929	* If they can't cope with our link quality protocol, we'll have
darran	0:55a05330f8cc	930	* to stop asking for LQR. We haven't got any other protocol.
darran	0:55a05330f8cc	931	* If they Nak the reporting period, take their value XXX ?
darran	0:55a05330f8cc	932	*/
darran	0:55a05330f8cc	933	NAKCILQR(CI_QUALITY, neg_lqr,
darran	0:55a05330f8cc	934	if (cishort != PPP_LQR) {
darran	0:55a05330f8cc	935	try.neg_lqr = 0;
darran	0:55a05330f8cc	936	} else {
darran	0:55a05330f8cc	937	try.lqr_period = cilong;
darran	0:55a05330f8cc	938	}
darran	0:55a05330f8cc	939	);
darran	0:55a05330f8cc	940
darran	0:55a05330f8cc	941	/*
darran	0:55a05330f8cc	942	* Only implementing CBCP...not the rest of the callback options
darran	0:55a05330f8cc	943	*/
darran	0:55a05330f8cc	944	NAKCICHAR(CI_CALLBACK, neg_cbcp,
darran	0:55a05330f8cc	945	try.neg_cbcp = 0;
darran	0:55a05330f8cc	946	);
darran	0:55a05330f8cc	947
darran	0:55a05330f8cc	948	/*
darran	0:55a05330f8cc	949	* Check for a looped-back line.
darran	0:55a05330f8cc	950	*/
darran	0:55a05330f8cc	951	NAKCILONG(CI_MAGICNUMBER, neg_magicnumber,
darran	0:55a05330f8cc	952	try.magicnumber = magic();
darran	0:55a05330f8cc	953	looped_back = 1;
darran	0:55a05330f8cc	954	);
darran	0:55a05330f8cc	955
darran	0:55a05330f8cc	956	/*
darran	0:55a05330f8cc	957	* Peer shouldn't send Nak for protocol compression or
darran	0:55a05330f8cc	958	* address/control compression requests; they should send
darran	0:55a05330f8cc	959	* a Reject instead. If they send a Nak, treat it as a Reject.
darran	0:55a05330f8cc	960	*/
darran	0:55a05330f8cc	961	NAKCIVOID(CI_PCOMPRESSION, neg_pcompression,
darran	0:55a05330f8cc	962	try.neg_pcompression = 0;
darran	0:55a05330f8cc	963	);
darran	0:55a05330f8cc	964	NAKCIVOID(CI_ACCOMPRESSION, neg_accompression,
darran	0:55a05330f8cc	965	try.neg_accompression = 0;
darran	0:55a05330f8cc	966	);
darran	0:55a05330f8cc	967
darran	0:55a05330f8cc	968	/*
darran	0:55a05330f8cc	969	* There may be remaining CIs, if the peer is requesting negotiation
darran	0:55a05330f8cc	970	* on an option that we didn't include in our request packet.
darran	0:55a05330f8cc	971	* If we see an option that we requested, or one we've already seen
darran	0:55a05330f8cc	972	* in this packet, then this packet is bad.
darran	0:55a05330f8cc	973	* If we wanted to respond by starting to negotiate on the requested
darran	0:55a05330f8cc	974	* option(s), we could, but we don't, because except for the
darran	0:55a05330f8cc	975	* authentication type and quality protocol, if we are not negotiating
darran	0:55a05330f8cc	976	* an option, it is because we were told not to.
darran	0:55a05330f8cc	977	* For the authentication type, the Nak from the peer means
darran	0:55a05330f8cc	978	* `let me authenticate myself with you' which is a bit pointless.
darran	0:55a05330f8cc	979	* For the quality protocol, the Nak means `ask me to send you quality
darran	0:55a05330f8cc	980	* reports', but if we didn't ask for them, we don't want them.
darran	0:55a05330f8cc	981	* An option we don't recognize represents the peer asking to
darran	0:55a05330f8cc	982	* negotiate some option we don't support, so ignore it.
darran	0:55a05330f8cc	983	*/
darran	0:55a05330f8cc	984	while (len > CILEN_VOID) {
darran	0:55a05330f8cc	985	GETCHAR(citype, p);
darran	0:55a05330f8cc	986	GETCHAR(cilen, p);
darran	0:55a05330f8cc	987	if (cilen < CILEN_VOID \|\| (len -= cilen) < 0) {
darran	0:55a05330f8cc	988	goto bad;
darran	0:55a05330f8cc	989	}
darran	0:55a05330f8cc	990	next = p + cilen - 2;
darran	0:55a05330f8cc	991
darran	0:55a05330f8cc	992	switch (citype) {
darran	0:55a05330f8cc	993	case CI_MRU:
darran	0:55a05330f8cc	994	if ((go->neg_mru && go->mru != PPP_DEFMRU)
darran	0:55a05330f8cc	995	\|\| no.neg_mru \|\| cilen != CILEN_SHORT) {
darran	0:55a05330f8cc	996	goto bad;
darran	0:55a05330f8cc	997	}
darran	0:55a05330f8cc	998	GETSHORT(cishort, p);
darran	0:55a05330f8cc	999	if (cishort < PPP_DEFMRU) {
darran	0:55a05330f8cc	1000	try.mru = cishort;
darran	0:55a05330f8cc	1001	}
darran	0:55a05330f8cc	1002	break;
darran	0:55a05330f8cc	1003	case CI_ASYNCMAP:
darran	0:55a05330f8cc	1004	if ((go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl)
darran	0:55a05330f8cc	1005	\|\| no.neg_asyncmap \|\| cilen != CILEN_LONG) {
darran	0:55a05330f8cc	1006	goto bad;
darran	0:55a05330f8cc	1007	}
darran	0:55a05330f8cc	1008	break;
darran	0:55a05330f8cc	1009	case CI_AUTHTYPE:
darran	0:55a05330f8cc	1010	if (go->neg_chap \|\| no.neg_chap \|\| go->neg_upap \|\| no.neg_upap) {
darran	0:55a05330f8cc	1011	goto bad;
darran	0:55a05330f8cc	1012	}
darran	0:55a05330f8cc	1013	break;
darran	0:55a05330f8cc	1014	case CI_MAGICNUMBER:
darran	0:55a05330f8cc	1015	if (go->neg_magicnumber \|\| no.neg_magicnumber \|\|
darran	0:55a05330f8cc	1016	cilen != CILEN_LONG) {
darran	0:55a05330f8cc	1017	goto bad;
darran	0:55a05330f8cc	1018	}
darran	0:55a05330f8cc	1019	break;
darran	0:55a05330f8cc	1020	case CI_PCOMPRESSION:
darran	0:55a05330f8cc	1021	if (go->neg_pcompression \|\| no.neg_pcompression
darran	0:55a05330f8cc	1022	\|\| cilen != CILEN_VOID) {
darran	0:55a05330f8cc	1023	goto bad;
darran	0:55a05330f8cc	1024	}
darran	0:55a05330f8cc	1025	break;
darran	0:55a05330f8cc	1026	case CI_ACCOMPRESSION:
darran	0:55a05330f8cc	1027	if (go->neg_accompression \|\| no.neg_accompression
darran	0:55a05330f8cc	1028	\|\| cilen != CILEN_VOID) {
darran	0:55a05330f8cc	1029	goto bad;
darran	0:55a05330f8cc	1030	}
darran	0:55a05330f8cc	1031	break;
darran	0:55a05330f8cc	1032	case CI_QUALITY:
darran	0:55a05330f8cc	1033	if (go->neg_lqr \|\| no.neg_lqr \|\| cilen != CILEN_LQR) {
darran	0:55a05330f8cc	1034	goto bad;
darran	0:55a05330f8cc	1035	}
darran	0:55a05330f8cc	1036	break;
darran	0:55a05330f8cc	1037	}
darran	0:55a05330f8cc	1038	p = next;
darran	0:55a05330f8cc	1039	}
darran	0:55a05330f8cc	1040
darran	0:55a05330f8cc	1041	/* If there is still anything left, this packet is bad. */
darran	0:55a05330f8cc	1042	if (len != 0) {
darran	0:55a05330f8cc	1043	goto bad;
darran	0:55a05330f8cc	1044	}
darran	0:55a05330f8cc	1045
darran	0:55a05330f8cc	1046	/*
darran	0:55a05330f8cc	1047	* OK, the Nak is good. Now we can update state.
darran	0:55a05330f8cc	1048	*/
darran	0:55a05330f8cc	1049	if (f->state != LS_OPENED) {
darran	0:55a05330f8cc	1050	if (looped_back) {
darran	0:55a05330f8cc	1051	if (++try.numloops >= lcp_loopbackfail) {
darran	0:55a05330f8cc	1052	LCPDEBUG(LOG_NOTICE, ("Serial line is looped back.\n"));
darran	0:55a05330f8cc	1053	lcp_close(f->unit, "Loopback detected");
darran	0:55a05330f8cc	1054	}
darran	0:55a05330f8cc	1055	} else {
darran	0:55a05330f8cc	1056	try.numloops = 0;
darran	0:55a05330f8cc	1057	}
darran	0:55a05330f8cc	1058	*go = try;
darran	0:55a05330f8cc	1059	}
darran	0:55a05330f8cc	1060
darran	0:55a05330f8cc	1061	return 1;
darran	0:55a05330f8cc	1062
darran	0:55a05330f8cc	1063	bad:
darran	0:55a05330f8cc	1064	LCPDEBUG(LOG_WARNING, ("lcp_nakci: received bad Nak!\n"));
darran	0:55a05330f8cc	1065	return 0;
darran	0:55a05330f8cc	1066	}
darran	0:55a05330f8cc	1067
darran	0:55a05330f8cc	1068
darran	0:55a05330f8cc	1069	/*
darran	0:55a05330f8cc	1070	* lcp_rejci - Peer has Rejected some of our CIs.
darran	0:55a05330f8cc	1071	* This should not modify any state if the Reject is bad
darran	0:55a05330f8cc	1072	* or if LCP is in the LS_OPENED state.
darran	0:55a05330f8cc	1073	*
darran	0:55a05330f8cc	1074	* Returns:
darran	0:55a05330f8cc	1075	* 0 - Reject was bad.
darran	0:55a05330f8cc	1076	* 1 - Reject was good.
darran	0:55a05330f8cc	1077	*/
darran	0:55a05330f8cc	1078	static int
darran	0:55a05330f8cc	1079	lcp_rejci(fsm f, u_char p, int len)
darran	0:55a05330f8cc	1080	{
darran	0:55a05330f8cc	1081	lcp_options *go = &lcp_gotoptions[f->unit];
darran	0:55a05330f8cc	1082	u_char cichar;
darran	0:55a05330f8cc	1083	u_short cishort;
darran	0:55a05330f8cc	1084	u32_t cilong;
darran	0:55a05330f8cc	1085	lcp_options try; /* options to request next time */
darran	0:55a05330f8cc	1086
darran	0:55a05330f8cc	1087	try = *go;
darran	0:55a05330f8cc	1088
darran	0:55a05330f8cc	1089	/*
darran	0:55a05330f8cc	1090	* Any Rejected CIs must be in exactly the same order that we sent.
darran	0:55a05330f8cc	1091	* Check packet length and CI length at each step.
darran	0:55a05330f8cc	1092	* If we find any deviations, then this packet is bad.
darran	0:55a05330f8cc	1093	*/
darran	0:55a05330f8cc	1094	#define REJCIVOID(opt, neg) \
darran	0:55a05330f8cc	1095	if (go->neg && \
darran	0:55a05330f8cc	1096	len >= CILEN_VOID && \
darran	0:55a05330f8cc	1097	p[1] == CILEN_VOID && \
darran	0:55a05330f8cc	1098	p[0] == opt) { \
darran	0:55a05330f8cc	1099	len -= CILEN_VOID; \
darran	0:55a05330f8cc	1100	INCPTR(CILEN_VOID, p); \
darran	0:55a05330f8cc	1101	try.neg = 0; \
darran	0:55a05330f8cc	1102	LCPDEBUG(LOG_INFO, ("lcp_rejci: void opt %d rejected\n", opt)); \
darran	0:55a05330f8cc	1103	}
darran	0:55a05330f8cc	1104	#define REJCISHORT(opt, neg, val) \
darran	0:55a05330f8cc	1105	if (go->neg && \
darran	0:55a05330f8cc	1106	len >= CILEN_SHORT && \
darran	0:55a05330f8cc	1107	p[1] == CILEN_SHORT && \
darran	0:55a05330f8cc	1108	p[0] == opt) { \
darran	0:55a05330f8cc	1109	len -= CILEN_SHORT; \
darran	0:55a05330f8cc	1110	INCPTR(2, p); \
darran	0:55a05330f8cc	1111	GETSHORT(cishort, p); \
darran	0:55a05330f8cc	1112	/* Check rejected value. */ \
darran	0:55a05330f8cc	1113	if (cishort != val) { \
darran	0:55a05330f8cc	1114	goto bad; \
darran	0:55a05330f8cc	1115	} \
darran	0:55a05330f8cc	1116	try.neg = 0; \
darran	0:55a05330f8cc	1117	LCPDEBUG(LOG_INFO, ("lcp_rejci: short opt %d rejected\n", opt)); \
darran	0:55a05330f8cc	1118	}
darran	0:55a05330f8cc	1119	#define REJCICHAP(opt, neg, val, digest) \
darran	0:55a05330f8cc	1120	if (go->neg && \
darran	0:55a05330f8cc	1121	len >= CILEN_CHAP && \
darran	0:55a05330f8cc	1122	p[1] == CILEN_CHAP && \
darran	0:55a05330f8cc	1123	p[0] == opt) { \
darran	0:55a05330f8cc	1124	len -= CILEN_CHAP; \
darran	0:55a05330f8cc	1125	INCPTR(2, p); \
darran	0:55a05330f8cc	1126	GETSHORT(cishort, p); \
darran	0:55a05330f8cc	1127	GETCHAR(cichar, p); \
darran	0:55a05330f8cc	1128	/* Check rejected value. */ \
darran	0:55a05330f8cc	1129	if (cishort != val \|\| cichar != digest) { \
darran	0:55a05330f8cc	1130	goto bad; \
darran	0:55a05330f8cc	1131	} \
darran	0:55a05330f8cc	1132	try.neg = 0; \
darran	0:55a05330f8cc	1133	try.neg_upap = 0; \
darran	0:55a05330f8cc	1134	LCPDEBUG(LOG_INFO, ("lcp_rejci: chap opt %d rejected\n", opt)); \
darran	0:55a05330f8cc	1135	}
darran	0:55a05330f8cc	1136	#define REJCILONG(opt, neg, val) \
darran	0:55a05330f8cc	1137	if (go->neg && \
darran	0:55a05330f8cc	1138	len >= CILEN_LONG && \
darran	0:55a05330f8cc	1139	p[1] == CILEN_LONG && \
darran	0:55a05330f8cc	1140	p[0] == opt) { \
darran	0:55a05330f8cc	1141	len -= CILEN_LONG; \
darran	0:55a05330f8cc	1142	INCPTR(2, p); \
darran	0:55a05330f8cc	1143	GETLONG(cilong, p); \
darran	0:55a05330f8cc	1144	/* Check rejected value. */ \
darran	0:55a05330f8cc	1145	if (cilong != val) { \
darran	0:55a05330f8cc	1146	goto bad; \
darran	0:55a05330f8cc	1147	} \
darran	0:55a05330f8cc	1148	try.neg = 0; \
darran	0:55a05330f8cc	1149	LCPDEBUG(LOG_INFO, ("lcp_rejci: long opt %d rejected\n", opt)); \
darran	0:55a05330f8cc	1150	}
darran	0:55a05330f8cc	1151	#define REJCILQR(opt, neg, val) \
darran	0:55a05330f8cc	1152	if (go->neg && \
darran	0:55a05330f8cc	1153	len >= CILEN_LQR && \
darran	0:55a05330f8cc	1154	p[1] == CILEN_LQR && \
darran	0:55a05330f8cc	1155	p[0] == opt) { \
darran	0:55a05330f8cc	1156	len -= CILEN_LQR; \
darran	0:55a05330f8cc	1157	INCPTR(2, p); \
darran	0:55a05330f8cc	1158	GETSHORT(cishort, p); \
darran	0:55a05330f8cc	1159	GETLONG(cilong, p); \
darran	0:55a05330f8cc	1160	/* Check rejected value. */ \
darran	0:55a05330f8cc	1161	if (cishort != PPP_LQR \|\| cilong != val) { \
darran	0:55a05330f8cc	1162	goto bad; \
darran	0:55a05330f8cc	1163	} \
darran	0:55a05330f8cc	1164	try.neg = 0; \
darran	0:55a05330f8cc	1165	LCPDEBUG(LOG_INFO, ("lcp_rejci: LQR opt %d rejected\n", opt)); \
darran	0:55a05330f8cc	1166	}
darran	0:55a05330f8cc	1167	#define REJCICBCP(opt, neg, val) \
darran	0:55a05330f8cc	1168	if (go->neg && \
darran	0:55a05330f8cc	1169	len >= CILEN_CBCP && \
darran	0:55a05330f8cc	1170	p[1] == CILEN_CBCP && \
darran	0:55a05330f8cc	1171	p[0] == opt) { \
darran	0:55a05330f8cc	1172	len -= CILEN_CBCP; \
darran	0:55a05330f8cc	1173	INCPTR(2, p); \
darran	0:55a05330f8cc	1174	GETCHAR(cichar, p); \
darran	0:55a05330f8cc	1175	/* Check rejected value. */ \
darran	0:55a05330f8cc	1176	if (cichar != val) { \
darran	0:55a05330f8cc	1177	goto bad; \
darran	0:55a05330f8cc	1178	} \
darran	0:55a05330f8cc	1179	try.neg = 0; \
darran	0:55a05330f8cc	1180	LCPDEBUG(LOG_INFO, ("lcp_rejci: Callback opt %d rejected\n", opt)); \
darran	0:55a05330f8cc	1181	}
darran	0:55a05330f8cc	1182
darran	0:55a05330f8cc	1183	REJCISHORT(CI_MRU, neg_mru, go->mru);
darran	0:55a05330f8cc	1184	REJCILONG(CI_ASYNCMAP, neg_asyncmap, go->asyncmap);
darran	0:55a05330f8cc	1185	REJCICHAP(CI_AUTHTYPE, neg_chap, PPP_CHAP, go->chap_mdtype);
darran	0:55a05330f8cc	1186	if (!go->neg_chap) {
darran	0:55a05330f8cc	1187	REJCISHORT(CI_AUTHTYPE, neg_upap, PPP_PAP);
darran	0:55a05330f8cc	1188	}
darran	0:55a05330f8cc	1189	REJCILQR(CI_QUALITY, neg_lqr, go->lqr_period);
darran	0:55a05330f8cc	1190	REJCICBCP(CI_CALLBACK, neg_cbcp, CBCP_OPT);
darran	0:55a05330f8cc	1191	REJCILONG(CI_MAGICNUMBER, neg_magicnumber, go->magicnumber);
darran	0:55a05330f8cc	1192	REJCIVOID(CI_PCOMPRESSION, neg_pcompression);
darran	0:55a05330f8cc	1193	REJCIVOID(CI_ACCOMPRESSION, neg_accompression);
darran	0:55a05330f8cc	1194
darran	0:55a05330f8cc	1195	/*
darran	0:55a05330f8cc	1196	* If there are any remaining CIs, then this packet is bad.
darran	0:55a05330f8cc	1197	*/
darran	0:55a05330f8cc	1198	if (len != 0) {
darran	0:55a05330f8cc	1199	goto bad;
darran	0:55a05330f8cc	1200	}
darran	0:55a05330f8cc	1201	/*
darran	0:55a05330f8cc	1202	* Now we can update state.
darran	0:55a05330f8cc	1203	*/
darran	0:55a05330f8cc	1204	if (f->state != LS_OPENED) {
darran	0:55a05330f8cc	1205	*go = try;
darran	0:55a05330f8cc	1206	}
darran	0:55a05330f8cc	1207	return 1;
darran	0:55a05330f8cc	1208
darran	0:55a05330f8cc	1209	bad:
darran	0:55a05330f8cc	1210	LCPDEBUG(LOG_WARNING, ("lcp_rejci: received bad Reject!\n"));
darran	0:55a05330f8cc	1211	return 0;
darran	0:55a05330f8cc	1212	}
darran	0:55a05330f8cc	1213
darran	0:55a05330f8cc	1214
darran	0:55a05330f8cc	1215	/*
darran	0:55a05330f8cc	1216	* lcp_reqci - Check the peer's requested CIs and send appropriate response.
darran	0:55a05330f8cc	1217	*
darran	0:55a05330f8cc	1218	* Returns: CONFACK, CONFNAK or CONFREJ and input packet modified
darran	0:55a05330f8cc	1219	* appropriately. If reject_if_disagree is non-zero, doesn't return
darran	0:55a05330f8cc	1220	* CONFNAK; returns CONFREJ if it can't return CONFACK.
darran	0:55a05330f8cc	1221	*/
darran	0:55a05330f8cc	1222	static int
darran	0:55a05330f8cc	1223	lcp_reqci(fsm *f,
darran	0:55a05330f8cc	1224	u_char inp, / Requested CIs */
darran	0:55a05330f8cc	1225	int lenp, / Length of requested CIs */
darran	0:55a05330f8cc	1226	int reject_if_disagree)
darran	0:55a05330f8cc	1227	{
darran	0:55a05330f8cc	1228	lcp_options *go = &lcp_gotoptions[f->unit];
darran	0:55a05330f8cc	1229	lcp_options *ho = &lcp_hisoptions[f->unit];
darran	0:55a05330f8cc	1230	lcp_options *ao = &lcp_allowoptions[f->unit];
darran	0:55a05330f8cc	1231	u_char cip, next; /* Pointer to current and next CIs */
darran	0:55a05330f8cc	1232	int cilen, citype; /* Parsed len, type */
darran	0:55a05330f8cc	1233	u_char cichar; /* Parsed char value */
darran	0:55a05330f8cc	1234	u_short cishort; /* Parsed short value */
darran	0:55a05330f8cc	1235	u32_t cilong; /* Parse long value */
darran	0:55a05330f8cc	1236	int rc = CONFACK; /* Final packet return code */
darran	0:55a05330f8cc	1237	int orc; /* Individual option return code */
darran	0:55a05330f8cc	1238	u_char p; / Pointer to next char to parse */
darran	0:55a05330f8cc	1239	u_char rejp; / Pointer to next char in reject frame */
darran	0:55a05330f8cc	1240	u_char nakp; / Pointer to next char in Nak frame */
darran	0:55a05330f8cc	1241	int l = lenp; / Length left */
darran	0:55a05330f8cc	1242	#if TRACELCP > 0
darran	0:55a05330f8cc	1243	char traceBuf[80];
darran	0:55a05330f8cc	1244	size_t traceNdx = 0;
darran	0:55a05330f8cc	1245	#endif
darran	0:55a05330f8cc	1246
darran	0:55a05330f8cc	1247	/*
darran	0:55a05330f8cc	1248	* Reset all his options.
darran	0:55a05330f8cc	1249	*/
darran	0:55a05330f8cc	1250	BZERO(ho, sizeof(*ho));
darran	0:55a05330f8cc	1251
darran	0:55a05330f8cc	1252	/*
darran	0:55a05330f8cc	1253	* Process all his options.
darran	0:55a05330f8cc	1254	*/
darran	0:55a05330f8cc	1255	next = inp;
darran	0:55a05330f8cc	1256	nakp = nak_buffer;
darran	0:55a05330f8cc	1257	rejp = inp;
darran	0:55a05330f8cc	1258	while (l) {
darran	0:55a05330f8cc	1259	orc = CONFACK; /* Assume success */
darran	0:55a05330f8cc	1260	cip = p = next; /* Remember begining of CI */
darran	0:55a05330f8cc	1261	if (l < 2 \|\| /* Not enough data for CI header or */
darran	0:55a05330f8cc	1262	p[1] < 2 \|\| /* CI length too small or */
darran	0:55a05330f8cc	1263	p[1] > l) { /* CI length too big? */
darran	0:55a05330f8cc	1264	LCPDEBUG(LOG_WARNING, ("lcp_reqci: bad CI length!\n"));
darran	0:55a05330f8cc	1265	orc = CONFREJ; /* Reject bad CI */
darran	0:55a05330f8cc	1266	cilen = l; /* Reject till end of packet */
darran	0:55a05330f8cc	1267	l = 0; /* Don't loop again */
darran	0:55a05330f8cc	1268	citype = 0;
darran	0:55a05330f8cc	1269	goto endswitch;
darran	0:55a05330f8cc	1270	}
darran	0:55a05330f8cc	1271	GETCHAR(citype, p); /* Parse CI type */
darran	0:55a05330f8cc	1272	GETCHAR(cilen, p); /* Parse CI length */
darran	0:55a05330f8cc	1273	l -= cilen; /* Adjust remaining length */
darran	0:55a05330f8cc	1274	next += cilen; /* Step to next CI */
darran	0:55a05330f8cc	1275
darran	0:55a05330f8cc	1276	switch (citype) { /* Check CI type */
darran	0:55a05330f8cc	1277	case CI_MRU:
darran	0:55a05330f8cc	1278	if (!ao->neg_mru) { /* Allow option? */
darran	0:55a05330f8cc	1279	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - not allowed\n"));
darran	0:55a05330f8cc	1280	orc = CONFREJ; /* Reject CI */
darran	0:55a05330f8cc	1281	break;
darran	0:55a05330f8cc	1282	} else if (cilen != CILEN_SHORT) { /* Check CI length */
darran	0:55a05330f8cc	1283	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - bad length\n"));
darran	0:55a05330f8cc	1284	orc = CONFREJ; /* Reject CI */
darran	0:55a05330f8cc	1285	break;
darran	0:55a05330f8cc	1286	}
darran	0:55a05330f8cc	1287	GETSHORT(cishort, p); /* Parse MRU */
darran	0:55a05330f8cc	1288
darran	0:55a05330f8cc	1289	/*
darran	0:55a05330f8cc	1290	* He must be able to receive at least our minimum.
darran	0:55a05330f8cc	1291	* No need to check a maximum. If he sends a large number,
darran	0:55a05330f8cc	1292	* we'll just ignore it.
darran	0:55a05330f8cc	1293	*/
darran	0:55a05330f8cc	1294	if (cishort < PPP_MINMRU) {
darran	0:55a05330f8cc	1295	LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak - MRU too small\n"));
darran	0:55a05330f8cc	1296	orc = CONFNAK; /* Nak CI */
darran	0:55a05330f8cc	1297	PUTCHAR(CI_MRU, nakp);
darran	0:55a05330f8cc	1298	PUTCHAR(CILEN_SHORT, nakp);
darran	0:55a05330f8cc	1299	PUTSHORT(PPP_MINMRU, nakp); /* Give him a hint */
darran	0:55a05330f8cc	1300	break;
darran	0:55a05330f8cc	1301	}
darran	0:55a05330f8cc	1302	ho->neg_mru = 1; /* Remember he sent MRU */
darran	0:55a05330f8cc	1303	ho->mru = cishort; /* And remember value */
darran	0:55a05330f8cc	1304	#if TRACELCP > 0
darran	0:55a05330f8cc	1305	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MRU %d", cishort);
darran	0:55a05330f8cc	1306	traceNdx = strlen(traceBuf);
darran	0:55a05330f8cc	1307	#endif
darran	0:55a05330f8cc	1308	break;
darran	0:55a05330f8cc	1309
darran	0:55a05330f8cc	1310	case CI_ASYNCMAP:
darran	0:55a05330f8cc	1311	if (!ao->neg_asyncmap) {
darran	0:55a05330f8cc	1312	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP not allowed\n"));
darran	0:55a05330f8cc	1313	orc = CONFREJ;
darran	0:55a05330f8cc	1314	break;
darran	0:55a05330f8cc	1315	} else if (cilen != CILEN_LONG) {
darran	0:55a05330f8cc	1316	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP bad length\n"));
darran	0:55a05330f8cc	1317	orc = CONFREJ;
darran	0:55a05330f8cc	1318	break;
darran	0:55a05330f8cc	1319	}
darran	0:55a05330f8cc	1320	GETLONG(cilong, p);
darran	0:55a05330f8cc	1321
darran	0:55a05330f8cc	1322	/*
darran	0:55a05330f8cc	1323	* Asyncmap must have set at least the bits
darran	0:55a05330f8cc	1324	* which are set in lcp_allowoptions[unit].asyncmap.
darran	0:55a05330f8cc	1325	*/
darran	0:55a05330f8cc	1326	if ((ao->asyncmap & ~cilong) != 0) {
darran	0:55a05330f8cc	1327	LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak ASYNCMAP %lX missing %lX\n",
darran	0:55a05330f8cc	1328	cilong, ao->asyncmap));
darran	0:55a05330f8cc	1329	orc = CONFNAK;
darran	0:55a05330f8cc	1330	PUTCHAR(CI_ASYNCMAP, nakp);
darran	0:55a05330f8cc	1331	PUTCHAR(CILEN_LONG, nakp);
darran	0:55a05330f8cc	1332	PUTLONG(ao->asyncmap \| cilong, nakp);
darran	0:55a05330f8cc	1333	break;
darran	0:55a05330f8cc	1334	}
darran	0:55a05330f8cc	1335	ho->neg_asyncmap = 1;
darran	0:55a05330f8cc	1336	ho->asyncmap = cilong;
darran	0:55a05330f8cc	1337	#if TRACELCP > 0
darran	0:55a05330f8cc	1338	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ASYNCMAP=%lX", cilong);
darran	0:55a05330f8cc	1339	traceNdx = strlen(traceBuf);
darran	0:55a05330f8cc	1340	#endif
darran	0:55a05330f8cc	1341	break;
darran	0:55a05330f8cc	1342
darran	0:55a05330f8cc	1343	case CI_AUTHTYPE:
darran	0:55a05330f8cc	1344	if (cilen < CILEN_SHORT) {
darran	0:55a05330f8cc	1345	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE missing arg\n"));
darran	0:55a05330f8cc	1346	orc = CONFREJ;
darran	0:55a05330f8cc	1347	break;
darran	0:55a05330f8cc	1348	} else if (!(ao->neg_upap \|\| ao->neg_chap)) {
darran	0:55a05330f8cc	1349	/*
darran	0:55a05330f8cc	1350	* Reject the option if we're not willing to authenticate.
darran	0:55a05330f8cc	1351	*/
darran	0:55a05330f8cc	1352	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE not allowed\n"));
darran	0:55a05330f8cc	1353	orc = CONFREJ;
darran	0:55a05330f8cc	1354	break;
darran	0:55a05330f8cc	1355	}
darran	0:55a05330f8cc	1356	GETSHORT(cishort, p);
darran	0:55a05330f8cc	1357
darran	0:55a05330f8cc	1358	/*
darran	0:55a05330f8cc	1359	* Authtype must be UPAP or CHAP.
darran	0:55a05330f8cc	1360	*
darran	0:55a05330f8cc	1361	* Note: if both ao->neg_upap and ao->neg_chap are set,
darran	0:55a05330f8cc	1362	* and the peer sends a Configure-Request with two
darran	0:55a05330f8cc	1363	* authenticate-protocol requests, one for CHAP and one
darran	0:55a05330f8cc	1364	* for UPAP, then we will reject the second request.
darran	0:55a05330f8cc	1365	* Whether we end up doing CHAP or UPAP depends then on
darran	0:55a05330f8cc	1366	* the ordering of the CIs in the peer's Configure-Request.
darran	0:55a05330f8cc	1367	*/
darran	0:55a05330f8cc	1368
darran	0:55a05330f8cc	1369	if (cishort == PPP_PAP) {
darran	0:55a05330f8cc	1370	if (ho->neg_chap) { /* we've already accepted CHAP */
darran	0:55a05330f8cc	1371	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP already accepted\n"));
darran	0:55a05330f8cc	1372	orc = CONFREJ;
darran	0:55a05330f8cc	1373	break;
darran	0:55a05330f8cc	1374	} else if (cilen != CILEN_SHORT) {
darran	0:55a05330f8cc	1375	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP bad len\n"));
darran	0:55a05330f8cc	1376	orc = CONFREJ;
darran	0:55a05330f8cc	1377	break;
darran	0:55a05330f8cc	1378	}
darran	0:55a05330f8cc	1379	if (!ao->neg_upap) { /* we don't want to do PAP */
darran	0:55a05330f8cc	1380	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE PAP not allowed\n"));
darran	0:55a05330f8cc	1381	orc = CONFNAK; /* NAK it and suggest CHAP */
darran	0:55a05330f8cc	1382	PUTCHAR(CI_AUTHTYPE, nakp);
darran	0:55a05330f8cc	1383	PUTCHAR(CILEN_CHAP, nakp);
darran	0:55a05330f8cc	1384	PUTSHORT(PPP_CHAP, nakp);
darran	0:55a05330f8cc	1385	PUTCHAR(ao->chap_mdtype, nakp);
darran	0:55a05330f8cc	1386	break;
darran	0:55a05330f8cc	1387	}
darran	0:55a05330f8cc	1388	ho->neg_upap = 1;
darran	0:55a05330f8cc	1389	#if TRACELCP > 0
darran	0:55a05330f8cc	1390	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PAP (%X)", cishort);
darran	0:55a05330f8cc	1391	traceNdx = strlen(traceBuf);
darran	0:55a05330f8cc	1392	#endif
darran	0:55a05330f8cc	1393	break;
darran	0:55a05330f8cc	1394	}
darran	0:55a05330f8cc	1395	if (cishort == PPP_CHAP) {
darran	0:55a05330f8cc	1396	if (ho->neg_upap) { /* we've already accepted PAP */
darran	0:55a05330f8cc	1397	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP accepted PAP\n"));
darran	0:55a05330f8cc	1398	orc = CONFREJ;
darran	0:55a05330f8cc	1399	break;
darran	0:55a05330f8cc	1400	} else if (cilen != CILEN_CHAP) {
darran	0:55a05330f8cc	1401	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP bad len\n"));
darran	0:55a05330f8cc	1402	orc = CONFREJ;
darran	0:55a05330f8cc	1403	break;
darran	0:55a05330f8cc	1404	}
darran	0:55a05330f8cc	1405	if (!ao->neg_chap) { /* we don't want to do CHAP */
darran	0:55a05330f8cc	1406	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP not allowed\n"));
darran	0:55a05330f8cc	1407	orc = CONFNAK; /* NAK it and suggest PAP */
darran	0:55a05330f8cc	1408	PUTCHAR(CI_AUTHTYPE, nakp);
darran	0:55a05330f8cc	1409	PUTCHAR(CILEN_SHORT, nakp);
darran	0:55a05330f8cc	1410	PUTSHORT(PPP_PAP, nakp);
darran	0:55a05330f8cc	1411	break;
darran	0:55a05330f8cc	1412	}
darran	0:55a05330f8cc	1413	GETCHAR(cichar, p); /* get digest type*/
darran	0:55a05330f8cc	1414	if (cichar != CHAP_DIGEST_MD5
darran	0:55a05330f8cc	1415	#if MSCHAP_SUPPORT
darran	0:55a05330f8cc	1416	&& cichar != CHAP_MICROSOFT
darran	0:55a05330f8cc	1417	#endif
darran	0:55a05330f8cc	1418	) {
darran	0:55a05330f8cc	1419	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP digest=%d\n", (int)cichar));
darran	0:55a05330f8cc	1420	orc = CONFNAK;
darran	0:55a05330f8cc	1421	PUTCHAR(CI_AUTHTYPE, nakp);
darran	0:55a05330f8cc	1422	PUTCHAR(CILEN_CHAP, nakp);
darran	0:55a05330f8cc	1423	PUTSHORT(PPP_CHAP, nakp);
darran	0:55a05330f8cc	1424	PUTCHAR(ao->chap_mdtype, nakp);
darran	0:55a05330f8cc	1425	break;
darran	0:55a05330f8cc	1426	}
darran	0:55a05330f8cc	1427	#if TRACELCP > 0
darran	0:55a05330f8cc	1428	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CHAP %X,%d", cishort, (int)cichar);
darran	0:55a05330f8cc	1429	traceNdx = strlen(traceBuf);
darran	0:55a05330f8cc	1430	#endif
darran	0:55a05330f8cc	1431	ho->chap_mdtype = cichar; /* save md type */
darran	0:55a05330f8cc	1432	ho->neg_chap = 1;
darran	0:55a05330f8cc	1433	break;
darran	0:55a05330f8cc	1434	}
darran	0:55a05330f8cc	1435
darran	0:55a05330f8cc	1436	/*
darran	0:55a05330f8cc	1437	* We don't recognize the protocol they're asking for.
darran	0:55a05330f8cc	1438	* Nak it with something we're willing to do.
darran	0:55a05330f8cc	1439	* (At this point we know ao->neg_upap \|\| ao->neg_chap.)
darran	0:55a05330f8cc	1440	*/
darran	0:55a05330f8cc	1441	orc = CONFNAK;
darran	0:55a05330f8cc	1442	PUTCHAR(CI_AUTHTYPE, nakp);
darran	0:55a05330f8cc	1443	if (ao->neg_chap) {
darran	0:55a05330f8cc	1444	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req CHAP\n", cishort));
darran	0:55a05330f8cc	1445	PUTCHAR(CILEN_CHAP, nakp);
darran	0:55a05330f8cc	1446	PUTSHORT(PPP_CHAP, nakp);
darran	0:55a05330f8cc	1447	PUTCHAR(ao->chap_mdtype, nakp);
darran	0:55a05330f8cc	1448	} else {
darran	0:55a05330f8cc	1449	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req PAP\n", cishort));
darran	0:55a05330f8cc	1450	PUTCHAR(CILEN_SHORT, nakp);
darran	0:55a05330f8cc	1451	PUTSHORT(PPP_PAP, nakp);
darran	0:55a05330f8cc	1452	}
darran	0:55a05330f8cc	1453	break;
darran	0:55a05330f8cc	1454
darran	0:55a05330f8cc	1455	case CI_QUALITY:
darran	0:55a05330f8cc	1456	GETSHORT(cishort, p);
darran	0:55a05330f8cc	1457	GETLONG(cilong, p);
darran	0:55a05330f8cc	1458	#if TRACELCP > 0
darran	0:55a05330f8cc	1459	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " QUALITY (%x %x)", cishort, (unsigned int) cilong);
darran	0:55a05330f8cc	1460	traceNdx = strlen(traceBuf);
darran	0:55a05330f8cc	1461	#endif
darran	0:55a05330f8cc	1462
darran	0:55a05330f8cc	1463	if (!ao->neg_lqr \|\|
darran	0:55a05330f8cc	1464	cilen != CILEN_LQR) {
darran	0:55a05330f8cc	1465	orc = CONFREJ;
darran	0:55a05330f8cc	1466	break;
darran	0:55a05330f8cc	1467	}
darran	0:55a05330f8cc	1468
darran	0:55a05330f8cc	1469	/*
darran	0:55a05330f8cc	1470	* Check the protocol and the reporting period.
darran	0:55a05330f8cc	1471	* XXX When should we Nak this, and what with?
darran	0:55a05330f8cc	1472	*/
darran	0:55a05330f8cc	1473	if (cishort != PPP_LQR) {
darran	0:55a05330f8cc	1474	orc = CONFNAK;
darran	0:55a05330f8cc	1475	PUTCHAR(CI_QUALITY, nakp);
darran	0:55a05330f8cc	1476	PUTCHAR(CILEN_LQR, nakp);
darran	0:55a05330f8cc	1477	PUTSHORT(PPP_LQR, nakp);
darran	0:55a05330f8cc	1478	PUTLONG(ao->lqr_period, nakp);
darran	0:55a05330f8cc	1479	break;
darran	0:55a05330f8cc	1480	}
darran	0:55a05330f8cc	1481	break;
darran	0:55a05330f8cc	1482
darran	0:55a05330f8cc	1483	case CI_MAGICNUMBER:
darran	0:55a05330f8cc	1484	if (!(ao->neg_magicnumber \|\| go->neg_magicnumber) \|\|
darran	0:55a05330f8cc	1485	cilen != CILEN_LONG) {
darran	0:55a05330f8cc	1486	orc = CONFREJ;
darran	0:55a05330f8cc	1487	break;
darran	0:55a05330f8cc	1488	}
darran	0:55a05330f8cc	1489	GETLONG(cilong, p);
darran	0:55a05330f8cc	1490	#if TRACELCP > 0
darran	0:55a05330f8cc	1491	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MAGICNUMBER (%lX)", cilong);
darran	0:55a05330f8cc	1492	traceNdx = strlen(traceBuf);
darran	0:55a05330f8cc	1493	#endif
darran	0:55a05330f8cc	1494
darran	0:55a05330f8cc	1495	/*
darran	0:55a05330f8cc	1496	* He must have a different magic number.
darran	0:55a05330f8cc	1497	*/
darran	0:55a05330f8cc	1498	if (go->neg_magicnumber &&
darran	0:55a05330f8cc	1499	cilong == go->magicnumber) {
darran	0:55a05330f8cc	1500	cilong = magic(); /* Don't put magic() inside macro! */
darran	0:55a05330f8cc	1501	orc = CONFNAK;
darran	0:55a05330f8cc	1502	PUTCHAR(CI_MAGICNUMBER, nakp);
darran	0:55a05330f8cc	1503	PUTCHAR(CILEN_LONG, nakp);
darran	0:55a05330f8cc	1504	PUTLONG(cilong, nakp);
darran	0:55a05330f8cc	1505	break;
darran	0:55a05330f8cc	1506	}
darran	0:55a05330f8cc	1507	ho->neg_magicnumber = 1;
darran	0:55a05330f8cc	1508	ho->magicnumber = cilong;
darran	0:55a05330f8cc	1509	break;
darran	0:55a05330f8cc	1510
darran	0:55a05330f8cc	1511
darran	0:55a05330f8cc	1512	case CI_PCOMPRESSION:
darran	0:55a05330f8cc	1513	#if TRACELCP > 0
darran	0:55a05330f8cc	1514	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PCOMPRESSION");
darran	0:55a05330f8cc	1515	traceNdx = strlen(traceBuf);
darran	0:55a05330f8cc	1516	#endif
darran	0:55a05330f8cc	1517	if (!ao->neg_pcompression \|\|
darran	0:55a05330f8cc	1518	cilen != CILEN_VOID) {
darran	0:55a05330f8cc	1519	orc = CONFREJ;
darran	0:55a05330f8cc	1520	break;
darran	0:55a05330f8cc	1521	}
darran	0:55a05330f8cc	1522	ho->neg_pcompression = 1;
darran	0:55a05330f8cc	1523	break;
darran	0:55a05330f8cc	1524
darran	0:55a05330f8cc	1525	case CI_ACCOMPRESSION:
darran	0:55a05330f8cc	1526	#if TRACELCP > 0
darran	0:55a05330f8cc	1527	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ACCOMPRESSION");
darran	0:55a05330f8cc	1528	traceNdx = strlen(traceBuf);
darran	0:55a05330f8cc	1529	#endif
darran	0:55a05330f8cc	1530	if (!ao->neg_accompression \|\|
darran	0:55a05330f8cc	1531	cilen != CILEN_VOID) {
darran	0:55a05330f8cc	1532	orc = CONFREJ;
darran	0:55a05330f8cc	1533	break;
darran	0:55a05330f8cc	1534	}
darran	0:55a05330f8cc	1535	ho->neg_accompression = 1;
darran	0:55a05330f8cc	1536	break;
darran	0:55a05330f8cc	1537
darran	0:55a05330f8cc	1538	case CI_MRRU:
darran	0:55a05330f8cc	1539	#if TRACELCP > 0
darran	0:55a05330f8cc	1540	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_MRRU");
darran	0:55a05330f8cc	1541	traceNdx = strlen(traceBuf);
darran	0:55a05330f8cc	1542	#endif
darran	0:55a05330f8cc	1543	orc = CONFREJ;
darran	0:55a05330f8cc	1544	break;
darran	0:55a05330f8cc	1545
darran	0:55a05330f8cc	1546	case CI_SSNHF:
darran	0:55a05330f8cc	1547	#if TRACELCP > 0
darran	0:55a05330f8cc	1548	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_SSNHF");
darran	0:55a05330f8cc	1549	traceNdx = strlen(traceBuf);
darran	0:55a05330f8cc	1550	#endif
darran	0:55a05330f8cc	1551	orc = CONFREJ;
darran	0:55a05330f8cc	1552	break;
darran	0:55a05330f8cc	1553
darran	0:55a05330f8cc	1554	case CI_EPDISC:
darran	0:55a05330f8cc	1555	#if TRACELCP > 0
darran	0:55a05330f8cc	1556	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_EPDISC");
darran	0:55a05330f8cc	1557	traceNdx = strlen(traceBuf);
darran	0:55a05330f8cc	1558	#endif
darran	0:55a05330f8cc	1559	orc = CONFREJ;
darran	0:55a05330f8cc	1560	break;
darran	0:55a05330f8cc	1561
darran	0:55a05330f8cc	1562	default:
darran	0:55a05330f8cc	1563	#if TRACELCP
darran	0:55a05330f8cc	1564	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " unknown %d", citype);
darran	0:55a05330f8cc	1565	traceNdx = strlen(traceBuf);
darran	0:55a05330f8cc	1566	#endif
darran	0:55a05330f8cc	1567	orc = CONFREJ;
darran	0:55a05330f8cc	1568	break;
darran	0:55a05330f8cc	1569	}
darran	0:55a05330f8cc	1570
darran	0:55a05330f8cc	1571	endswitch:
darran	0:55a05330f8cc	1572	#if TRACELCP
darran	0:55a05330f8cc	1573	if (traceNdx >= 80 - 32) {
darran	0:55a05330f8cc	1574	LCPDEBUG(LOG_INFO, ("lcp_reqci: rcvd%s\n", traceBuf));
darran	0:55a05330f8cc	1575	traceNdx = 0;
darran	0:55a05330f8cc	1576	}
darran	0:55a05330f8cc	1577	#endif
darran	0:55a05330f8cc	1578	if (orc == CONFACK && /* Good CI */
darran	0:55a05330f8cc	1579	rc != CONFACK) { /* but prior CI wasnt? */
darran	0:55a05330f8cc	1580	continue; /* Don't send this one */
darran	0:55a05330f8cc	1581	}
darran	0:55a05330f8cc	1582
darran	0:55a05330f8cc	1583	if (orc == CONFNAK) { /* Nak this CI? */
darran	0:55a05330f8cc	1584	if (reject_if_disagree /* Getting fed up with sending NAKs? */
darran	0:55a05330f8cc	1585	&& citype != CI_MAGICNUMBER) {
darran	0:55a05330f8cc	1586	orc = CONFREJ; /* Get tough if so */
darran	0:55a05330f8cc	1587	} else {
darran	0:55a05330f8cc	1588	if (rc == CONFREJ) { /* Rejecting prior CI? */
darran	0:55a05330f8cc	1589	continue; /* Don't send this one */
darran	0:55a05330f8cc	1590	}
darran	0:55a05330f8cc	1591	rc = CONFNAK;
darran	0:55a05330f8cc	1592	}
darran	0:55a05330f8cc	1593	}
darran	0:55a05330f8cc	1594	if (orc == CONFREJ) { /* Reject this CI */
darran	0:55a05330f8cc	1595	rc = CONFREJ;
darran	0:55a05330f8cc	1596	if (cip != rejp) { /* Need to move rejected CI? */
darran	0:55a05330f8cc	1597	BCOPY(cip, rejp, cilen); /* Move it */
darran	0:55a05330f8cc	1598	}
darran	0:55a05330f8cc	1599	INCPTR(cilen, rejp); /* Update output pointer */
darran	0:55a05330f8cc	1600	}
darran	0:55a05330f8cc	1601	}
darran	0:55a05330f8cc	1602
darran	0:55a05330f8cc	1603	/*
darran	0:55a05330f8cc	1604	* If we wanted to send additional NAKs (for unsent CIs), the
darran	0:55a05330f8cc	1605	* code would go here. The extra NAKs would go at *nakp.
darran	0:55a05330f8cc	1606	* At present there are no cases where we want to ask the
darran	0:55a05330f8cc	1607	* peer to negotiate an option.
darran	0:55a05330f8cc	1608	*/
darran	0:55a05330f8cc	1609
darran	0:55a05330f8cc	1610	switch (rc) {
darran	0:55a05330f8cc	1611	case CONFACK:
darran	0:55a05330f8cc	1612	*lenp = (int)(next - inp);
darran	0:55a05330f8cc	1613	break;
darran	0:55a05330f8cc	1614	case CONFNAK:
darran	0:55a05330f8cc	1615	/*
darran	0:55a05330f8cc	1616	* Copy the Nak'd options from the nak_buffer to the caller's buffer.
darran	0:55a05330f8cc	1617	*/
darran	0:55a05330f8cc	1618	*lenp = (int)(nakp - nak_buffer);
darran	0:55a05330f8cc	1619	BCOPY(nak_buffer, inp, *lenp);
darran	0:55a05330f8cc	1620	break;
darran	0:55a05330f8cc	1621	case CONFREJ:
darran	0:55a05330f8cc	1622	*lenp = (int)(rejp - inp);
darran	0:55a05330f8cc	1623	break;
darran	0:55a05330f8cc	1624	}
darran	0:55a05330f8cc	1625
darran	0:55a05330f8cc	1626	#if TRACELCP > 0
darran	0:55a05330f8cc	1627	if (traceNdx > 0) {
darran	0:55a05330f8cc	1628	LCPDEBUG(LOG_INFO, ("lcp_reqci: %s\n", traceBuf));
darran	0:55a05330f8cc	1629	}
darran	0:55a05330f8cc	1630	#endif
darran	0:55a05330f8cc	1631	LCPDEBUG(LOG_INFO, ("lcp_reqci: returning CONF%s.\n", CODENAME(rc)));
darran	0:55a05330f8cc	1632	return (rc); /* Return final code */
darran	0:55a05330f8cc	1633	}
darran	0:55a05330f8cc	1634
darran	0:55a05330f8cc	1635
darran	0:55a05330f8cc	1636	/*
darran	0:55a05330f8cc	1637	* lcp_up - LCP has come UP.
darran	0:55a05330f8cc	1638	*/
darran	0:55a05330f8cc	1639	static void
darran	0:55a05330f8cc	1640	lcp_up(fsm *f)
darran	0:55a05330f8cc	1641	{
darran	0:55a05330f8cc	1642	lcp_options *wo = &lcp_wantoptions[f->unit];
darran	0:55a05330f8cc	1643	lcp_options *ho = &lcp_hisoptions[f->unit];
darran	0:55a05330f8cc	1644	lcp_options *go = &lcp_gotoptions[f->unit];
darran	0:55a05330f8cc	1645	lcp_options *ao = &lcp_allowoptions[f->unit];
darran	0:55a05330f8cc	1646
darran	0:55a05330f8cc	1647	if (!go->neg_magicnumber) {
darran	0:55a05330f8cc	1648	go->magicnumber = 0;
darran	0:55a05330f8cc	1649	}
darran	0:55a05330f8cc	1650	if (!ho->neg_magicnumber) {
darran	0:55a05330f8cc	1651	ho->magicnumber = 0;
darran	0:55a05330f8cc	1652	}
darran	0:55a05330f8cc	1653
darran	0:55a05330f8cc	1654	/*
darran	0:55a05330f8cc	1655	* Set our MTU to the smaller of the MTU we wanted and
darran	0:55a05330f8cc	1656	* the MRU our peer wanted. If we negotiated an MRU,
darran	0:55a05330f8cc	1657	* set our MRU to the larger of value we wanted and
darran	0:55a05330f8cc	1658	* the value we got in the negotiation.
darran	0:55a05330f8cc	1659	*/
darran	0:55a05330f8cc	1660	ppp_send_config(f->unit, LWIP_MIN(ao->mru, (ho->neg_mru? ho->mru: PPP_MRU)),
darran	0:55a05330f8cc	1661	(ho->neg_asyncmap? ho->asyncmap: 0xffffffffl),
darran	0:55a05330f8cc	1662	ho->neg_pcompression, ho->neg_accompression);
darran	0:55a05330f8cc	1663	/*
darran	0:55a05330f8cc	1664	* If the asyncmap hasn't been negotiated, we really should
darran	0:55a05330f8cc	1665	* set the receive asyncmap to ffffffff, but we set it to 0
darran	0:55a05330f8cc	1666	* for backwards contemptibility.
darran	0:55a05330f8cc	1667	*/
darran	0:55a05330f8cc	1668	ppp_recv_config(f->unit, (go->neg_mru? LWIP_MAX(wo->mru, go->mru): PPP_MRU),
darran	0:55a05330f8cc	1669	(go->neg_asyncmap? go->asyncmap: 0x00000000),
darran	0:55a05330f8cc	1670	go->neg_pcompression, go->neg_accompression);
darran	0:55a05330f8cc	1671
darran	0:55a05330f8cc	1672	if (ho->neg_mru) {
darran	0:55a05330f8cc	1673	peer_mru[f->unit] = ho->mru;
darran	0:55a05330f8cc	1674	}
darran	0:55a05330f8cc	1675
darran	0:55a05330f8cc	1676	lcp_echo_lowerup(f->unit); /* Enable echo messages */
darran	0:55a05330f8cc	1677
darran	0:55a05330f8cc	1678	link_established(f->unit); /* The link is up; authenticate now */
darran	0:55a05330f8cc	1679	}
darran	0:55a05330f8cc	1680
darran	0:55a05330f8cc	1681
darran	0:55a05330f8cc	1682	/*
darran	0:55a05330f8cc	1683	* lcp_down - LCP has gone DOWN.
darran	0:55a05330f8cc	1684	*
darran	0:55a05330f8cc	1685	* Alert other protocols.
darran	0:55a05330f8cc	1686	*/
darran	0:55a05330f8cc	1687	static void
darran	0:55a05330f8cc	1688	lcp_down(fsm *f)
darran	0:55a05330f8cc	1689	{
darran	0:55a05330f8cc	1690	lcp_options *go = &lcp_gotoptions[f->unit];
darran	0:55a05330f8cc	1691
darran	0:55a05330f8cc	1692	lcp_echo_lowerdown(f->unit);
darran	0:55a05330f8cc	1693
darran	0:55a05330f8cc	1694	link_down(f->unit);
darran	0:55a05330f8cc	1695
darran	0:55a05330f8cc	1696	ppp_send_config(f->unit, PPP_MRU, 0xffffffffl, 0, 0);
darran	0:55a05330f8cc	1697	ppp_recv_config(f->unit, PPP_MRU,
darran	0:55a05330f8cc	1698	(go->neg_asyncmap? go->asyncmap: 0x00000000),
darran	0:55a05330f8cc	1699	go->neg_pcompression, go->neg_accompression);
darran	0:55a05330f8cc	1700	peer_mru[f->unit] = PPP_MRU;
darran	0:55a05330f8cc	1701	}
darran	0:55a05330f8cc	1702
darran	0:55a05330f8cc	1703
darran	0:55a05330f8cc	1704	/*
darran	0:55a05330f8cc	1705	* lcp_starting - LCP needs the lower layer up.
darran	0:55a05330f8cc	1706	*/
darran	0:55a05330f8cc	1707	static void
darran	0:55a05330f8cc	1708	lcp_starting(fsm *f)
darran	0:55a05330f8cc	1709	{
darran	0:55a05330f8cc	1710	link_required(f->unit); /* lwip: currently does nothing */
darran	0:55a05330f8cc	1711	}
darran	0:55a05330f8cc	1712
darran	0:55a05330f8cc	1713
darran	0:55a05330f8cc	1714	/*
darran	0:55a05330f8cc	1715	* lcp_finished - LCP has finished with the lower layer.
darran	0:55a05330f8cc	1716	*/
darran	0:55a05330f8cc	1717	static void
darran	0:55a05330f8cc	1718	lcp_finished(fsm *f)
darran	0:55a05330f8cc	1719	{
darran	0:55a05330f8cc	1720	link_terminated(f->unit); /* we are finished with the link */
darran	0:55a05330f8cc	1721	}
darran	0:55a05330f8cc	1722
darran	0:55a05330f8cc	1723
darran	0:55a05330f8cc	1724	#if PPP_ADDITIONAL_CALLBACKS
darran	0:55a05330f8cc	1725	/*
darran	0:55a05330f8cc	1726	* print_string - print a readable representation of a string using
darran	0:55a05330f8cc	1727	* printer.
darran	0:55a05330f8cc	1728	*/
darran	0:55a05330f8cc	1729	static void
darran	0:55a05330f8cc	1730	print_string( char p, int len, void (printer) (void , char , ...), void *arg)
darran	0:55a05330f8cc	1731	{
darran	0:55a05330f8cc	1732	int c;
darran	0:55a05330f8cc	1733
darran	0:55a05330f8cc	1734	printer(arg, "\"");
darran	0:55a05330f8cc	1735	for (; len > 0; --len) {
darran	0:55a05330f8cc	1736	c = *p++;
darran	0:55a05330f8cc	1737	if (' ' <= c && c <= '~') {
darran	0:55a05330f8cc	1738	if (c == '\\' \|\| c == '"') {
darran	0:55a05330f8cc	1739	printer(arg, "\\");
darran	0:55a05330f8cc	1740	}
darran	0:55a05330f8cc	1741	printer(arg, "%c", c);
darran	0:55a05330f8cc	1742	} else {
darran	0:55a05330f8cc	1743	switch (c) {
darran	0:55a05330f8cc	1744	case '\n':
darran	0:55a05330f8cc	1745	printer(arg, "\\n");
darran	0:55a05330f8cc	1746	break;
darran	0:55a05330f8cc	1747	case '\r':
darran	0:55a05330f8cc	1748	printer(arg, "\\r");
darran	0:55a05330f8cc	1749	break;
darran	0:55a05330f8cc	1750	case '\t':
darran	0:55a05330f8cc	1751	printer(arg, "\\t");
darran	0:55a05330f8cc	1752	break;
darran	0:55a05330f8cc	1753	default:
darran	0:55a05330f8cc	1754	printer(arg, "\\%.3o", c);
darran	0:55a05330f8cc	1755	}
darran	0:55a05330f8cc	1756	}
darran	0:55a05330f8cc	1757	}
darran	0:55a05330f8cc	1758	printer(arg, "\"");
darran	0:55a05330f8cc	1759	}
darran	0:55a05330f8cc	1760
darran	0:55a05330f8cc	1761
darran	0:55a05330f8cc	1762	/*
darran	0:55a05330f8cc	1763	* lcp_printpkt - print the contents of an LCP packet.
darran	0:55a05330f8cc	1764	*/
darran	0:55a05330f8cc	1765	static char *lcp_codenames[] = {
darran	0:55a05330f8cc	1766	"ConfReq", "ConfAck", "ConfNak", "ConfRej",
darran	0:55a05330f8cc	1767	"TermReq", "TermAck", "CodeRej", "ProtRej",
darran	0:55a05330f8cc	1768	"EchoReq", "EchoRep", "DiscReq"
darran	0:55a05330f8cc	1769	};
darran	0:55a05330f8cc	1770
darran	0:55a05330f8cc	1771	static int
darran	0:55a05330f8cc	1772	lcp_printpkt( u_char p, int plen, void (printer) (void , char , ...), void *arg)
darran	0:55a05330f8cc	1773	{
darran	0:55a05330f8cc	1774	int code, id, len, olen;
darran	0:55a05330f8cc	1775	u_char pstart, optend;
darran	0:55a05330f8cc	1776	u_short cishort;
darran	0:55a05330f8cc	1777	u32_t cilong;
darran	0:55a05330f8cc	1778
darran	0:55a05330f8cc	1779	if (plen < HEADERLEN) {
darran	0:55a05330f8cc	1780	return 0;
darran	0:55a05330f8cc	1781	}
darran	0:55a05330f8cc	1782	pstart = p;
darran	0:55a05330f8cc	1783	GETCHAR(code, p);
darran	0:55a05330f8cc	1784	GETCHAR(id, p);
darran	0:55a05330f8cc	1785	GETSHORT(len, p);
darran	0:55a05330f8cc	1786	if (len < HEADERLEN \|\| len > plen) {
darran	0:55a05330f8cc	1787	return 0;
darran	0:55a05330f8cc	1788	}
darran	0:55a05330f8cc	1789
darran	0:55a05330f8cc	1790	if (code >= 1 && code <= sizeof(lcp_codenames) / sizeof(char *)) {
darran	0:55a05330f8cc	1791	printer(arg, " %s", lcp_codenames[code-1]);
darran	0:55a05330f8cc	1792	} else {
darran	0:55a05330f8cc	1793	printer(arg, " code=0x%x", code);
darran	0:55a05330f8cc	1794	}
darran	0:55a05330f8cc	1795	printer(arg, " id=0x%x", id);
darran	0:55a05330f8cc	1796	len -= HEADERLEN;
darran	0:55a05330f8cc	1797	switch (code) {
darran	0:55a05330f8cc	1798	case CONFREQ:
darran	0:55a05330f8cc	1799	case CONFACK:
darran	0:55a05330f8cc	1800	case CONFNAK:
darran	0:55a05330f8cc	1801	case CONFREJ:
darran	0:55a05330f8cc	1802	/* print option list */
darran	0:55a05330f8cc	1803	while (len >= 2) {
darran	0:55a05330f8cc	1804	GETCHAR(code, p);
darran	0:55a05330f8cc	1805	GETCHAR(olen, p);
darran	0:55a05330f8cc	1806	p -= 2;
darran	0:55a05330f8cc	1807	if (olen < 2 \|\| olen > len) {
darran	0:55a05330f8cc	1808	break;
darran	0:55a05330f8cc	1809	}
darran	0:55a05330f8cc	1810	printer(arg, " <");
darran	0:55a05330f8cc	1811	len -= olen;
darran	0:55a05330f8cc	1812	optend = p + olen;
darran	0:55a05330f8cc	1813	switch (code) {
darran	0:55a05330f8cc	1814	case CI_MRU:
darran	0:55a05330f8cc	1815	if (olen == CILEN_SHORT) {
darran	0:55a05330f8cc	1816	p += 2;
darran	0:55a05330f8cc	1817	GETSHORT(cishort, p);
darran	0:55a05330f8cc	1818	printer(arg, "mru %d", cishort);
darran	0:55a05330f8cc	1819	}
darran	0:55a05330f8cc	1820	break;
darran	0:55a05330f8cc	1821	case CI_ASYNCMAP:
darran	0:55a05330f8cc	1822	if (olen == CILEN_LONG) {
darran	0:55a05330f8cc	1823	p += 2;
darran	0:55a05330f8cc	1824	GETLONG(cilong, p);
darran	0:55a05330f8cc	1825	printer(arg, "asyncmap 0x%lx", cilong);
darran	0:55a05330f8cc	1826	}
darran	0:55a05330f8cc	1827	break;
darran	0:55a05330f8cc	1828	case CI_AUTHTYPE:
darran	0:55a05330f8cc	1829	if (olen >= CILEN_SHORT) {
darran	0:55a05330f8cc	1830	p += 2;
darran	0:55a05330f8cc	1831	printer(arg, "auth ");
darran	0:55a05330f8cc	1832	GETSHORT(cishort, p);
darran	0:55a05330f8cc	1833	switch (cishort) {
darran	0:55a05330f8cc	1834	case PPP_PAP:
darran	0:55a05330f8cc	1835	printer(arg, "pap");
darran	0:55a05330f8cc	1836	break;
darran	0:55a05330f8cc	1837	case PPP_CHAP:
darran	0:55a05330f8cc	1838	printer(arg, "chap");
darran	0:55a05330f8cc	1839	break;
darran	0:55a05330f8cc	1840	default:
darran	0:55a05330f8cc	1841	printer(arg, "0x%x", cishort);
darran	0:55a05330f8cc	1842	}
darran	0:55a05330f8cc	1843	}
darran	0:55a05330f8cc	1844	break;
darran	0:55a05330f8cc	1845	case CI_QUALITY:
darran	0:55a05330f8cc	1846	if (olen >= CILEN_SHORT) {
darran	0:55a05330f8cc	1847	p += 2;
darran	0:55a05330f8cc	1848	printer(arg, "quality ");
darran	0:55a05330f8cc	1849	GETSHORT(cishort, p);
darran	0:55a05330f8cc	1850	switch (cishort) {
darran	0:55a05330f8cc	1851	case PPP_LQR:
darran	0:55a05330f8cc	1852	printer(arg, "lqr");
darran	0:55a05330f8cc	1853	break;
darran	0:55a05330f8cc	1854	default:
darran	0:55a05330f8cc	1855	printer(arg, "0x%x", cishort);
darran	0:55a05330f8cc	1856	}
darran	0:55a05330f8cc	1857	}
darran	0:55a05330f8cc	1858	break;
darran	0:55a05330f8cc	1859	case CI_CALLBACK:
darran	0:55a05330f8cc	1860	if (olen >= CILEN_CHAR) {
darran	0:55a05330f8cc	1861	p += 2;
darran	0:55a05330f8cc	1862	printer(arg, "callback ");
darran	0:55a05330f8cc	1863	GETSHORT(cishort, p);
darran	0:55a05330f8cc	1864	switch (cishort) {
darran	0:55a05330f8cc	1865	case CBCP_OPT:
darran	0:55a05330f8cc	1866	printer(arg, "CBCP");
darran	0:55a05330f8cc	1867	break;
darran	0:55a05330f8cc	1868	default:
darran	0:55a05330f8cc	1869	printer(arg, "0x%x", cishort);
darran	0:55a05330f8cc	1870	}
darran	0:55a05330f8cc	1871	}
darran	0:55a05330f8cc	1872	break;
darran	0:55a05330f8cc	1873	case CI_MAGICNUMBER:
darran	0:55a05330f8cc	1874	if (olen == CILEN_LONG) {
darran	0:55a05330f8cc	1875	p += 2;
darran	0:55a05330f8cc	1876	GETLONG(cilong, p);
darran	0:55a05330f8cc	1877	printer(arg, "magic 0x%x", cilong);
darran	0:55a05330f8cc	1878	}
darran	0:55a05330f8cc	1879	break;
darran	0:55a05330f8cc	1880	case CI_PCOMPRESSION:
darran	0:55a05330f8cc	1881	if (olen == CILEN_VOID) {
darran	0:55a05330f8cc	1882	p += 2;
darran	0:55a05330f8cc	1883	printer(arg, "pcomp");
darran	0:55a05330f8cc	1884	}
darran	0:55a05330f8cc	1885	break;
darran	0:55a05330f8cc	1886	case CI_ACCOMPRESSION:
darran	0:55a05330f8cc	1887	if (olen == CILEN_VOID) {
darran	0:55a05330f8cc	1888	p += 2;
darran	0:55a05330f8cc	1889	printer(arg, "accomp");
darran	0:55a05330f8cc	1890	}
darran	0:55a05330f8cc	1891	break;
darran	0:55a05330f8cc	1892	}
darran	0:55a05330f8cc	1893	while (p < optend) {
darran	0:55a05330f8cc	1894	GETCHAR(code, p);
darran	0:55a05330f8cc	1895	printer(arg, " %.2x", code);
darran	0:55a05330f8cc	1896	}
darran	0:55a05330f8cc	1897	printer(arg, ">");
darran	0:55a05330f8cc	1898	}
darran	0:55a05330f8cc	1899	break;
darran	0:55a05330f8cc	1900
darran	0:55a05330f8cc	1901	case TERMACK:
darran	0:55a05330f8cc	1902	case TERMREQ:
darran	0:55a05330f8cc	1903	if (len > 0 && p >= ' ' && p < 0x7f) {
darran	0:55a05330f8cc	1904	printer(arg, " ");
darran	0:55a05330f8cc	1905	print_string((char*)p, len, printer, arg);
darran	0:55a05330f8cc	1906	p += len;
darran	0:55a05330f8cc	1907	len = 0;
darran	0:55a05330f8cc	1908	}
darran	0:55a05330f8cc	1909	break;
darran	0:55a05330f8cc	1910
darran	0:55a05330f8cc	1911	case ECHOREQ:
darran	0:55a05330f8cc	1912	case ECHOREP:
darran	0:55a05330f8cc	1913	case DISCREQ:
darran	0:55a05330f8cc	1914	if (len >= 4) {
darran	0:55a05330f8cc	1915	GETLONG(cilong, p);
darran	0:55a05330f8cc	1916	printer(arg, " magic=0x%x", cilong);
darran	0:55a05330f8cc	1917	p += 4;
darran	0:55a05330f8cc	1918	len -= 4;
darran	0:55a05330f8cc	1919	}
darran	0:55a05330f8cc	1920	break;
darran	0:55a05330f8cc	1921	}
darran	0:55a05330f8cc	1922
darran	0:55a05330f8cc	1923	/* print the rest of the bytes in the packet */
darran	0:55a05330f8cc	1924	for (; len > 0; --len) {
darran	0:55a05330f8cc	1925	GETCHAR(code, p);
darran	0:55a05330f8cc	1926	printer(arg, " %.2x", code);
darran	0:55a05330f8cc	1927	}
darran	0:55a05330f8cc	1928
darran	0:55a05330f8cc	1929	return (int)(p - pstart);
darran	0:55a05330f8cc	1930	}
darran	0:55a05330f8cc	1931	#endif /* PPP_ADDITIONAL_CALLBACKS */
darran	0:55a05330f8cc	1932
darran	0:55a05330f8cc	1933	/*
darran	0:55a05330f8cc	1934	* Time to shut down the link because there is nothing out there.
darran	0:55a05330f8cc	1935	*/
darran	0:55a05330f8cc	1936	static void
darran	0:55a05330f8cc	1937	LcpLinkFailure (fsm *f)
darran	0:55a05330f8cc	1938	{
darran	0:55a05330f8cc	1939	if (f->state == LS_OPENED) {
darran	0:55a05330f8cc	1940	LCPDEBUG(LOG_INFO, ("No response to %d echo-requests\n", lcp_echos_pending));
darran	0:55a05330f8cc	1941	LCPDEBUG(LOG_NOTICE, ("Serial link appears to be disconnected.\n"));
darran	0:55a05330f8cc	1942	lcp_close(f->unit, "Peer not responding");
darran	0:55a05330f8cc	1943	}
darran	0:55a05330f8cc	1944	}
darran	0:55a05330f8cc	1945
darran	0:55a05330f8cc	1946	/*
darran	0:55a05330f8cc	1947	* Timer expired for the LCP echo requests from this process.
darran	0:55a05330f8cc	1948	*/
darran	0:55a05330f8cc	1949	static void
darran	0:55a05330f8cc	1950	LcpEchoCheck (fsm *f)
darran	0:55a05330f8cc	1951	{
darran	0:55a05330f8cc	1952	LcpSendEchoRequest (f);
darran	0:55a05330f8cc	1953
darran	0:55a05330f8cc	1954	/*
darran	0:55a05330f8cc	1955	* Start the timer for the next interval.
darran	0:55a05330f8cc	1956	*/
darran	0:55a05330f8cc	1957	LWIP_ASSERT("lcp_echo_timer_running == 0", lcp_echo_timer_running == 0);
darran	0:55a05330f8cc	1958
darran	0:55a05330f8cc	1959	TIMEOUT (LcpEchoTimeout, f, lcp_echo_interval);
darran	0:55a05330f8cc	1960	lcp_echo_timer_running = 1;
darran	0:55a05330f8cc	1961	}
darran	0:55a05330f8cc	1962
darran	0:55a05330f8cc	1963	/*
darran	0:55a05330f8cc	1964	* LcpEchoTimeout - Timer expired on the LCP echo
darran	0:55a05330f8cc	1965	*/
darran	0:55a05330f8cc	1966	static void
darran	0:55a05330f8cc	1967	LcpEchoTimeout (void *arg)
darran	0:55a05330f8cc	1968	{
darran	0:55a05330f8cc	1969	if (lcp_echo_timer_running != 0) {
darran	0:55a05330f8cc	1970	lcp_echo_timer_running = 0;
darran	0:55a05330f8cc	1971	LcpEchoCheck ((fsm *) arg);
darran	0:55a05330f8cc	1972	}
darran	0:55a05330f8cc	1973	}
darran	0:55a05330f8cc	1974
darran	0:55a05330f8cc	1975	/*
darran	0:55a05330f8cc	1976	* LcpEchoReply - LCP has received a reply to the echo
darran	0:55a05330f8cc	1977	*/
darran	0:55a05330f8cc	1978	static void
darran	0:55a05330f8cc	1979	lcp_received_echo_reply (fsm f, int id, u_char inp, int len)
darran	0:55a05330f8cc	1980	{
darran	0:55a05330f8cc	1981	u32_t magic;
darran	0:55a05330f8cc	1982
darran	0:55a05330f8cc	1983	LWIP_UNUSED_ARG(id);
darran	0:55a05330f8cc	1984
darran	0:55a05330f8cc	1985	/* Check the magic number - don't count replies from ourselves. */
darran	0:55a05330f8cc	1986	if (len < 4) {
darran	0:55a05330f8cc	1987	LCPDEBUG(LOG_WARNING, ("lcp: received short Echo-Reply, length %d\n", len));
darran	0:55a05330f8cc	1988	return;
darran	0:55a05330f8cc	1989	}
darran	0:55a05330f8cc	1990	GETLONG(magic, inp);
darran	0:55a05330f8cc	1991	if (lcp_gotoptions[f->unit].neg_magicnumber && magic == lcp_gotoptions[f->unit].magicnumber) {
darran	0:55a05330f8cc	1992	LCPDEBUG(LOG_WARNING, ("appear to have received our own echo-reply!\n"));
darran	0:55a05330f8cc	1993	return;
darran	0:55a05330f8cc	1994	}
darran	0:55a05330f8cc	1995
darran	0:55a05330f8cc	1996	/* Reset the number of outstanding echo frames */
darran	0:55a05330f8cc	1997	lcp_echos_pending = 0;
darran	0:55a05330f8cc	1998	}
darran	0:55a05330f8cc	1999
darran	0:55a05330f8cc	2000	/*
darran	0:55a05330f8cc	2001	* LcpSendEchoRequest - Send an echo request frame to the peer
darran	0:55a05330f8cc	2002	*/
darran	0:55a05330f8cc	2003	static void
darran	0:55a05330f8cc	2004	LcpSendEchoRequest (fsm *f)
darran	0:55a05330f8cc	2005	{
darran	0:55a05330f8cc	2006	u32_t lcp_magic;
darran	0:55a05330f8cc	2007	u_char pkt[4], *pktp;
darran	0:55a05330f8cc	2008
darran	0:55a05330f8cc	2009	/*
darran	0:55a05330f8cc	2010	* Detect the failure of the peer at this point.
darran	0:55a05330f8cc	2011	*/
darran	0:55a05330f8cc	2012	if (lcp_echo_fails != 0) {
darran	0:55a05330f8cc	2013	if (lcp_echos_pending++ >= lcp_echo_fails) {
darran	0:55a05330f8cc	2014	LcpLinkFailure(f);
darran	0:55a05330f8cc	2015	lcp_echos_pending = 0;
darran	0:55a05330f8cc	2016	}
darran	0:55a05330f8cc	2017	}
darran	0:55a05330f8cc	2018
darran	0:55a05330f8cc	2019	/*
darran	0:55a05330f8cc	2020	* Make and send the echo request frame.
darran	0:55a05330f8cc	2021	*/
darran	0:55a05330f8cc	2022	if (f->state == LS_OPENED) {
darran	0:55a05330f8cc	2023	lcp_magic = lcp_gotoptions[f->unit].magicnumber;
darran	0:55a05330f8cc	2024	pktp = pkt;
darran	0:55a05330f8cc	2025	PUTLONG(lcp_magic, pktp);
darran	0:55a05330f8cc	2026	fsm_sdata(f, ECHOREQ, (u_char)(lcp_echo_number++ & 0xFF), pkt, (int)(pktp - pkt));
darran	0:55a05330f8cc	2027	}
darran	0:55a05330f8cc	2028	}
darran	0:55a05330f8cc	2029
darran	0:55a05330f8cc	2030	/*
darran	0:55a05330f8cc	2031	* lcp_echo_lowerup - Start the timer for the LCP frame
darran	0:55a05330f8cc	2032	*/
darran	0:55a05330f8cc	2033
darran	0:55a05330f8cc	2034	static void
darran	0:55a05330f8cc	2035	lcp_echo_lowerup (int unit)
darran	0:55a05330f8cc	2036	{
darran	0:55a05330f8cc	2037	fsm *f = &lcp_fsm[unit];
darran	0:55a05330f8cc	2038
darran	0:55a05330f8cc	2039	/* Clear the parameters for generating echo frames */
darran	0:55a05330f8cc	2040	lcp_echos_pending = 0;
darran	0:55a05330f8cc	2041	lcp_echo_number = 0;
darran	0:55a05330f8cc	2042	lcp_echo_timer_running = 0;
darran	0:55a05330f8cc	2043
darran	0:55a05330f8cc	2044	/* If a timeout interval is specified then start the timer */
darran	0:55a05330f8cc	2045	if (lcp_echo_interval != 0) {
darran	0:55a05330f8cc	2046	LcpEchoCheck (f);
darran	0:55a05330f8cc	2047	}
darran	0:55a05330f8cc	2048	}
darran	0:55a05330f8cc	2049
darran	0:55a05330f8cc	2050	/*
darran	0:55a05330f8cc	2051	* lcp_echo_lowerdown - Stop the timer for the LCP frame
darran	0:55a05330f8cc	2052	*/
darran	0:55a05330f8cc	2053
darran	0:55a05330f8cc	2054	static void
darran	0:55a05330f8cc	2055	lcp_echo_lowerdown (int unit)
darran	0:55a05330f8cc	2056	{
darran	0:55a05330f8cc	2057	fsm *f = &lcp_fsm[unit];
darran	0:55a05330f8cc	2058
darran	0:55a05330f8cc	2059	if (lcp_echo_timer_running != 0) {
darran	0:55a05330f8cc	2060	UNTIMEOUT (LcpEchoTimeout, f);
darran	0:55a05330f8cc	2061	lcp_echo_timer_running = 0;
darran	0:55a05330f8cc	2062	}
darran	0:55a05330f8cc	2063	}
darran	0:55a05330f8cc	2064
darran	0:55a05330f8cc	2065	#endif /* PPP_SUPPORT */

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	18 Jun 2010
Imports:	7
Forks:	0
Commits:	2
Dependents:	0
Dependencies:	1
Followers:	1

lwip/netif/ppp/lcp.c@1:4218cacaf696, 2010-06-18 (annotated)

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