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NetTribute library with debug turned on in FShandler Donatien Garner -> Segundo Equipo -> this version

lwip/netif/ppp/lcp.c@0:281d6ff68967, 2010-11-19 (annotated)

Committer:: hexley
Date:: Fri Nov 19 01:54:45 2010 +0000
Revision:: 0:281d6ff68967

Who changed what in which revision?

User	Revision	Line number	New contents of line
hexley	0:281d6ff68967	1	/*****************************************************************************
hexley	0:281d6ff68967	2	* lcp.c - Network Link Control Protocol program file.
hexley	0:281d6ff68967	3	*
hexley	0:281d6ff68967	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
hexley	0:281d6ff68967	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
hexley	0:281d6ff68967	6	*
hexley	0:281d6ff68967	7	* The authors hereby grant permission to use, copy, modify, distribute,
hexley	0:281d6ff68967	8	* and license this software and its documentation for any purpose, provided
hexley	0:281d6ff68967	9	* that existing copyright notices are retained in all copies and that this
hexley	0:281d6ff68967	10	* notice and the following disclaimer are included verbatim in any
hexley	0:281d6ff68967	11	* distributions. No written agreement, license, or royalty fee is required
hexley	0:281d6ff68967	12	* for any of the authorized uses.
hexley	0:281d6ff68967	13	*
hexley	0:281d6ff68967	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
hexley	0:281d6ff68967	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
hexley	0:281d6ff68967	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
hexley	0:281d6ff68967	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
hexley	0:281d6ff68967	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
hexley	0:281d6ff68967	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
hexley	0:281d6ff68967	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
hexley	0:281d6ff68967	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
hexley	0:281d6ff68967	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
hexley	0:281d6ff68967	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
hexley	0:281d6ff68967	24	*
hexley	0:281d6ff68967	25	******************************************************************************
hexley	0:281d6ff68967	26	* REVISION HISTORY
hexley	0:281d6ff68967	27	*
hexley	0:281d6ff68967	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
hexley	0:281d6ff68967	29	* Ported to lwIP.
hexley	0:281d6ff68967	30	* 97-12-01 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
hexley	0:281d6ff68967	31	* Original.
hexley	0:281d6ff68967	32	*****************************************************************************/
hexley	0:281d6ff68967	33
hexley	0:281d6ff68967	34	/*
hexley	0:281d6ff68967	35	* lcp.c - PPP Link Control Protocol.
hexley	0:281d6ff68967	36	*
hexley	0:281d6ff68967	37	* Copyright (c) 1989 Carnegie Mellon University.
hexley	0:281d6ff68967	38	* All rights reserved.
hexley	0:281d6ff68967	39	*
hexley	0:281d6ff68967	40	* Redistribution and use in source and binary forms are permitted
hexley	0:281d6ff68967	41	* provided that the above copyright notice and this paragraph are
hexley	0:281d6ff68967	42	* duplicated in all such forms and that any documentation,
hexley	0:281d6ff68967	43	* advertising materials, and other materials related to such
hexley	0:281d6ff68967	44	* distribution and use acknowledge that the software was developed
hexley	0:281d6ff68967	45	* by Carnegie Mellon University. The name of the
hexley	0:281d6ff68967	46	* University may not be used to endorse or promote products derived
hexley	0:281d6ff68967	47	* from this software without specific prior written permission.
hexley	0:281d6ff68967	48	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
hexley	0:281d6ff68967	49	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
hexley	0:281d6ff68967	50	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
hexley	0:281d6ff68967	51	*/
hexley	0:281d6ff68967	52
hexley	0:281d6ff68967	53
hexley	0:281d6ff68967	54	#include "lwip/opt.h"
hexley	0:281d6ff68967	55
hexley	0:281d6ff68967	56	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
hexley	0:281d6ff68967	57
hexley	0:281d6ff68967	58	#include "ppp.h"
hexley	0:281d6ff68967	59	#include "pppdebug.h"
hexley	0:281d6ff68967	60
hexley	0:281d6ff68967	61	#include "fsm.h"
hexley	0:281d6ff68967	62	#include "chap.h"
hexley	0:281d6ff68967	63	#include "magic.h"
hexley	0:281d6ff68967	64	#include "auth.h"
hexley	0:281d6ff68967	65	#include "lcp.h"
hexley	0:281d6ff68967	66
hexley	0:281d6ff68967	67	#include <string.h>
hexley	0:281d6ff68967	68
hexley	0:281d6ff68967	69	#if PPPOE_SUPPORT
hexley	0:281d6ff68967	70	#include "netif/ppp_oe.h"
hexley	0:281d6ff68967	71	#else
hexley	0:281d6ff68967	72	#define PPPOE_MAXMTU PPP_MAXMRU
hexley	0:281d6ff68967	73	#endif
hexley	0:281d6ff68967	74
hexley	0:281d6ff68967	75	#if 0 /* UNUSED */
hexley	0:281d6ff68967	76	/*
hexley	0:281d6ff68967	77	* LCP-related command-line options.
hexley	0:281d6ff68967	78	*/
hexley	0:281d6ff68967	79	int lcp_echo_interval = 0; /* Interval between LCP echo-requests */
hexley	0:281d6ff68967	80	int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */
hexley	0:281d6ff68967	81	bool lax_recv = 0; /* accept control chars in asyncmap */
hexley	0:281d6ff68967	82
hexley	0:281d6ff68967	83	static int setescape (char **);
hexley	0:281d6ff68967	84
hexley	0:281d6ff68967	85	static option_t lcp_option_list[] = {
hexley	0:281d6ff68967	86	/* LCP options */
hexley	0:281d6ff68967	87	/* list stripped for simplicity */
hexley	0:281d6ff68967	88	{NULL}
hexley	0:281d6ff68967	89	};
hexley	0:281d6ff68967	90	#endif /* UNUSED */
hexley	0:281d6ff68967	91
hexley	0:281d6ff68967	92	/* options */
hexley	0:281d6ff68967	93	LinkPhase lcp_phase[NUM_PPP]; /* Phase of link session (RFC 1661) */
hexley	0:281d6ff68967	94	static u_int lcp_echo_interval = LCP_ECHOINTERVAL; /* Interval between LCP echo-requests */
hexley	0:281d6ff68967	95	static u_int lcp_echo_fails = LCP_MAXECHOFAILS; /* Tolerance to unanswered echo-requests */
hexley	0:281d6ff68967	96
hexley	0:281d6ff68967	97	/* global vars */
hexley	0:281d6ff68967	98	static fsm lcp_fsm[NUM_PPP]; /* LCP fsm structure (global)*/
hexley	0:281d6ff68967	99	lcp_options lcp_wantoptions[NUM_PPP]; /* Options that we want to request */
hexley	0:281d6ff68967	100	lcp_options lcp_gotoptions[NUM_PPP]; /* Options that peer ack'd */
hexley	0:281d6ff68967	101	lcp_options lcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */
hexley	0:281d6ff68967	102	lcp_options lcp_hisoptions[NUM_PPP]; /* Options that we ack'd */
hexley	0:281d6ff68967	103	ext_accm xmit_accm[NUM_PPP]; /* extended transmit ACCM */
hexley	0:281d6ff68967	104
hexley	0:281d6ff68967	105	static u32_t lcp_echos_pending = 0; /* Number of outstanding echo msgs */
hexley	0:281d6ff68967	106	static u32_t lcp_echo_number = 0; /* ID number of next echo frame */
hexley	0:281d6ff68967	107	static u32_t lcp_echo_timer_running = 0; /* TRUE if a timer is running */
hexley	0:281d6ff68967	108
hexley	0:281d6ff68967	109	/* @todo: do we really need such a large buffer? The typical 1500 bytes seem too much. */
hexley	0:281d6ff68967	110	static u_char nak_buffer[PPP_MRU]; /* where we construct a nak packet */
hexley	0:281d6ff68967	111
hexley	0:281d6ff68967	112	/*
hexley	0:281d6ff68967	113	* Callbacks for fsm code. (CI = Configuration Information)
hexley	0:281d6ff68967	114	*/
hexley	0:281d6ff68967	115	static void lcp_resetci (fsm); / Reset our CI */
hexley	0:281d6ff68967	116	static int lcp_cilen (fsm); / Return length of our CI */
hexley	0:281d6ff68967	117	static void lcp_addci (fsm, u_char, int); / Add our CI to pkt */
hexley	0:281d6ff68967	118	static int lcp_ackci (fsm, u_char, int); /* Peer ack'd our CI */
hexley	0:281d6ff68967	119	static int lcp_nakci (fsm, u_char, int); /* Peer nak'd our CI */
hexley	0:281d6ff68967	120	static int lcp_rejci (fsm, u_char, int); /* Peer rej'd our CI */
hexley	0:281d6ff68967	121	static int lcp_reqci (fsm, u_char, int, int); / Rcv peer CI */
hexley	0:281d6ff68967	122	static void lcp_up (fsm); / We're UP */
hexley	0:281d6ff68967	123	static void lcp_down (fsm); / We're DOWN */
hexley	0:281d6ff68967	124	static void lcp_starting (fsm); / We need lower layer up */
hexley	0:281d6ff68967	125	static void lcp_finished (fsm); / We need lower layer down */
hexley	0:281d6ff68967	126	static int lcp_extcode (fsm, int, u_char, u_char, int);
hexley	0:281d6ff68967	127	static void lcp_rprotrej (fsm, u_char, int);
hexley	0:281d6ff68967	128
hexley	0:281d6ff68967	129	/*
hexley	0:281d6ff68967	130	* routines to send LCP echos to peer
hexley	0:281d6ff68967	131	*/
hexley	0:281d6ff68967	132
hexley	0:281d6ff68967	133	static void lcp_echo_lowerup (int);
hexley	0:281d6ff68967	134	static void lcp_echo_lowerdown (int);
hexley	0:281d6ff68967	135	static void LcpEchoTimeout (void*);
hexley	0:281d6ff68967	136	static void lcp_received_echo_reply (fsm, int, u_char, int);
hexley	0:281d6ff68967	137	static void LcpSendEchoRequest (fsm*);
hexley	0:281d6ff68967	138	static void LcpLinkFailure (fsm*);
hexley	0:281d6ff68967	139	static void LcpEchoCheck (fsm*);
hexley	0:281d6ff68967	140
hexley	0:281d6ff68967	141	static fsm_callbacks lcp_callbacks = { /* LCP callback routines */
hexley	0:281d6ff68967	142	lcp_resetci, /* Reset our Configuration Information */
hexley	0:281d6ff68967	143	lcp_cilen, /* Length of our Configuration Information */
hexley	0:281d6ff68967	144	lcp_addci, /* Add our Configuration Information */
hexley	0:281d6ff68967	145	lcp_ackci, /* ACK our Configuration Information */
hexley	0:281d6ff68967	146	lcp_nakci, /* NAK our Configuration Information */
hexley	0:281d6ff68967	147	lcp_rejci, /* Reject our Configuration Information */
hexley	0:281d6ff68967	148	lcp_reqci, /* Request peer's Configuration Information */
hexley	0:281d6ff68967	149	lcp_up, /* Called when fsm reaches LS_OPENED state */
hexley	0:281d6ff68967	150	lcp_down, /* Called when fsm leaves LS_OPENED state */
hexley	0:281d6ff68967	151	lcp_starting, /* Called when we want the lower layer up */
hexley	0:281d6ff68967	152	lcp_finished, /* Called when we want the lower layer down */
hexley	0:281d6ff68967	153	NULL, /* Called when Protocol-Reject received */
hexley	0:281d6ff68967	154	NULL, /* Retransmission is necessary */
hexley	0:281d6ff68967	155	lcp_extcode, /* Called to handle LCP-specific codes */
hexley	0:281d6ff68967	156	"LCP" /* String name of protocol */
hexley	0:281d6ff68967	157	};
hexley	0:281d6ff68967	158
hexley	0:281d6ff68967	159	/*
hexley	0:281d6ff68967	160	* Protocol entry points.
hexley	0:281d6ff68967	161	* Some of these are called directly.
hexley	0:281d6ff68967	162	*/
hexley	0:281d6ff68967	163
hexley	0:281d6ff68967	164	static void lcp_input (int, u_char *, int);
hexley	0:281d6ff68967	165	static void lcp_protrej (int);
hexley	0:281d6ff68967	166
hexley	0:281d6ff68967	167	struct protent lcp_protent = {
hexley	0:281d6ff68967	168	PPP_LCP,
hexley	0:281d6ff68967	169	lcp_init,
hexley	0:281d6ff68967	170	lcp_input,
hexley	0:281d6ff68967	171	lcp_protrej,
hexley	0:281d6ff68967	172	lcp_lowerup,
hexley	0:281d6ff68967	173	lcp_lowerdown,
hexley	0:281d6ff68967	174	lcp_open,
hexley	0:281d6ff68967	175	lcp_close,
hexley	0:281d6ff68967	176	#if PPP_ADDITIONAL_CALLBACKS
hexley	0:281d6ff68967	177	lcp_printpkt,
hexley	0:281d6ff68967	178	NULL,
hexley	0:281d6ff68967	179	#endif /* PPP_ADDITIONAL_CALLBACKS */
hexley	0:281d6ff68967	180	1,
hexley	0:281d6ff68967	181	"LCP",
hexley	0:281d6ff68967	182	#if PPP_ADDITIONAL_CALLBACKS
hexley	0:281d6ff68967	183	NULL,
hexley	0:281d6ff68967	184	NULL,
hexley	0:281d6ff68967	185	NULL
hexley	0:281d6ff68967	186	#endif /* PPP_ADDITIONAL_CALLBACKS */
hexley	0:281d6ff68967	187	};
hexley	0:281d6ff68967	188
hexley	0:281d6ff68967	189	int lcp_loopbackfail = DEFLOOPBACKFAIL;
hexley	0:281d6ff68967	190
hexley	0:281d6ff68967	191	/*
hexley	0:281d6ff68967	192	* Length of each type of configuration option (in octets)
hexley	0:281d6ff68967	193	*/
hexley	0:281d6ff68967	194	#define CILEN_VOID 2
hexley	0:281d6ff68967	195	#define CILEN_CHAR 3
hexley	0:281d6ff68967	196	#define CILEN_SHORT 4 /* CILEN_VOID + sizeof(short) */
hexley	0:281d6ff68967	197	#define CILEN_CHAP 5 /* CILEN_VOID + sizeof(short) + 1 */
hexley	0:281d6ff68967	198	#define CILEN_LONG 6 /* CILEN_VOID + sizeof(long) */
hexley	0:281d6ff68967	199	#define CILEN_LQR 8 /* CILEN_VOID + sizeof(short) + sizeof(long) */
hexley	0:281d6ff68967	200	#define CILEN_CBCP 3
hexley	0:281d6ff68967	201
hexley	0:281d6ff68967	202	#define CODENAME(x) ((x) == CONFACK ? "ACK" : (x) == CONFNAK ? "NAK" : "REJ")
hexley	0:281d6ff68967	203
hexley	0:281d6ff68967	204	#if 0 /* UNUSED */
hexley	0:281d6ff68967	205	/*
hexley	0:281d6ff68967	206	* setescape - add chars to the set we escape on transmission.
hexley	0:281d6ff68967	207	*/
hexley	0:281d6ff68967	208	static int
hexley	0:281d6ff68967	209	setescape(argv)
hexley	0:281d6ff68967	210	char **argv;
hexley	0:281d6ff68967	211	{
hexley	0:281d6ff68967	212	int n, ret;
hexley	0:281d6ff68967	213	char p, endp;
hexley	0:281d6ff68967	214
hexley	0:281d6ff68967	215	p = *argv;
hexley	0:281d6ff68967	216	ret = 1;
hexley	0:281d6ff68967	217	while (*p) {
hexley	0:281d6ff68967	218	n = strtol(p, &endp, 16);
hexley	0:281d6ff68967	219	if (p == endp) {
hexley	0:281d6ff68967	220	option_error("escape parameter contains invalid hex number '%s'", p);
hexley	0:281d6ff68967	221	return 0;
hexley	0:281d6ff68967	222	}
hexley	0:281d6ff68967	223	p = endp;
hexley	0:281d6ff68967	224	if (n < 0 \|\| n == 0x5E \|\| n > 0xFF) {
hexley	0:281d6ff68967	225	option_error("can't escape character 0x%x", n);
hexley	0:281d6ff68967	226	ret = 0;
hexley	0:281d6ff68967	227	} else
hexley	0:281d6ff68967	228	xmit_accm[0][n >> 5] \|= 1 << (n & 0x1F);
hexley	0:281d6ff68967	229	while (p == ',' \|\| p == ' ')
hexley	0:281d6ff68967	230	++p;
hexley	0:281d6ff68967	231	}
hexley	0:281d6ff68967	232	return ret;
hexley	0:281d6ff68967	233	}
hexley	0:281d6ff68967	234	#endif /* UNUSED */
hexley	0:281d6ff68967	235
hexley	0:281d6ff68967	236	/*
hexley	0:281d6ff68967	237	* lcp_init - Initialize LCP.
hexley	0:281d6ff68967	238	*/
hexley	0:281d6ff68967	239	void
hexley	0:281d6ff68967	240	lcp_init(int unit)
hexley	0:281d6ff68967	241	{
hexley	0:281d6ff68967	242	fsm *f = &lcp_fsm[unit];
hexley	0:281d6ff68967	243	lcp_options *wo = &lcp_wantoptions[unit];
hexley	0:281d6ff68967	244	lcp_options *ao = &lcp_allowoptions[unit];
hexley	0:281d6ff68967	245
hexley	0:281d6ff68967	246	f->unit = unit;
hexley	0:281d6ff68967	247	f->protocol = PPP_LCP;
hexley	0:281d6ff68967	248	f->callbacks = &lcp_callbacks;
hexley	0:281d6ff68967	249
hexley	0:281d6ff68967	250	fsm_init(f);
hexley	0:281d6ff68967	251
hexley	0:281d6ff68967	252	wo->passive = 0;
hexley	0:281d6ff68967	253	wo->silent = 0;
hexley	0:281d6ff68967	254	wo->restart = 0; /* Set to 1 in kernels or multi-line implementations */
hexley	0:281d6ff68967	255	wo->neg_mru = 1;
hexley	0:281d6ff68967	256	wo->mru = PPP_DEFMRU;
hexley	0:281d6ff68967	257	wo->neg_asyncmap = 1;
hexley	0:281d6ff68967	258	wo->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */
hexley	0:281d6ff68967	259	wo->neg_chap = 0; /* Set to 1 on server */
hexley	0:281d6ff68967	260	wo->neg_upap = 0; /* Set to 1 on server */
hexley	0:281d6ff68967	261	wo->chap_mdtype = CHAP_DIGEST_MD5;
hexley	0:281d6ff68967	262	wo->neg_magicnumber = 1;
hexley	0:281d6ff68967	263	wo->neg_pcompression = 1;
hexley	0:281d6ff68967	264	wo->neg_accompression = 1;
hexley	0:281d6ff68967	265	wo->neg_lqr = 0; /* no LQR implementation yet */
hexley	0:281d6ff68967	266	wo->neg_cbcp = 0;
hexley	0:281d6ff68967	267
hexley	0:281d6ff68967	268	ao->neg_mru = 1;
hexley	0:281d6ff68967	269	ao->mru = PPP_MAXMRU;
hexley	0:281d6ff68967	270	ao->neg_asyncmap = 1;
hexley	0:281d6ff68967	271	ao->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */
hexley	0:281d6ff68967	272	ao->neg_chap = (CHAP_SUPPORT != 0);
hexley	0:281d6ff68967	273	ao->chap_mdtype = CHAP_DIGEST_MD5;
hexley	0:281d6ff68967	274	ao->neg_upap = (PAP_SUPPORT != 0);
hexley	0:281d6ff68967	275	ao->neg_magicnumber = 1;
hexley	0:281d6ff68967	276	ao->neg_pcompression = 1;
hexley	0:281d6ff68967	277	ao->neg_accompression = 1;
hexley	0:281d6ff68967	278	ao->neg_lqr = 0; /* no LQR implementation yet */
hexley	0:281d6ff68967	279	ao->neg_cbcp = (CBCP_SUPPORT != 0);
hexley	0:281d6ff68967	280
hexley	0:281d6ff68967	281	/*
hexley	0:281d6ff68967	282	* Set transmit escape for the flag and escape characters plus anything
hexley	0:281d6ff68967	283	* set for the allowable options.
hexley	0:281d6ff68967	284	*/
hexley	0:281d6ff68967	285	memset(xmit_accm[unit], 0, sizeof(xmit_accm[0]));
hexley	0:281d6ff68967	286	xmit_accm[unit][15] = 0x60;
hexley	0:281d6ff68967	287	xmit_accm[unit][0] = (u_char)((ao->asyncmap & 0xFF));
hexley	0:281d6ff68967	288	xmit_accm[unit][1] = (u_char)((ao->asyncmap >> 8) & 0xFF);
hexley	0:281d6ff68967	289	xmit_accm[unit][2] = (u_char)((ao->asyncmap >> 16) & 0xFF);
hexley	0:281d6ff68967	290	xmit_accm[unit][3] = (u_char)((ao->asyncmap >> 24) & 0xFF);
hexley	0:281d6ff68967	291	LCPDEBUG(LOG_INFO, ("lcp_init: xmit_accm=%X %X %X %X\n",
hexley	0:281d6ff68967	292	xmit_accm[unit][0],
hexley	0:281d6ff68967	293	xmit_accm[unit][1],
hexley	0:281d6ff68967	294	xmit_accm[unit][2],
hexley	0:281d6ff68967	295	xmit_accm[unit][3]));
hexley	0:281d6ff68967	296
hexley	0:281d6ff68967	297	lcp_phase[unit] = PHASE_INITIALIZE;
hexley	0:281d6ff68967	298	}
hexley	0:281d6ff68967	299
hexley	0:281d6ff68967	300
hexley	0:281d6ff68967	301	/*
hexley	0:281d6ff68967	302	* lcp_open - LCP is allowed to come up.
hexley	0:281d6ff68967	303	*/
hexley	0:281d6ff68967	304	void
hexley	0:281d6ff68967	305	lcp_open(int unit)
hexley	0:281d6ff68967	306	{
hexley	0:281d6ff68967	307	fsm *f = &lcp_fsm[unit];
hexley	0:281d6ff68967	308	lcp_options *wo = &lcp_wantoptions[unit];
hexley	0:281d6ff68967	309
hexley	0:281d6ff68967	310	f->flags = 0;
hexley	0:281d6ff68967	311	if (wo->passive) {
hexley	0:281d6ff68967	312	f->flags \|= OPT_PASSIVE;
hexley	0:281d6ff68967	313	}
hexley	0:281d6ff68967	314	if (wo->silent) {
hexley	0:281d6ff68967	315	f->flags \|= OPT_SILENT;
hexley	0:281d6ff68967	316	}
hexley	0:281d6ff68967	317	fsm_open(f);
hexley	0:281d6ff68967	318
hexley	0:281d6ff68967	319	lcp_phase[unit] = PHASE_ESTABLISH;
hexley	0:281d6ff68967	320	}
hexley	0:281d6ff68967	321
hexley	0:281d6ff68967	322
hexley	0:281d6ff68967	323	/*
hexley	0:281d6ff68967	324	* lcp_close - Take LCP down.
hexley	0:281d6ff68967	325	*/
hexley	0:281d6ff68967	326	void
hexley	0:281d6ff68967	327	lcp_close(int unit, char *reason)
hexley	0:281d6ff68967	328	{
hexley	0:281d6ff68967	329	fsm *f = &lcp_fsm[unit];
hexley	0:281d6ff68967	330
hexley	0:281d6ff68967	331	if (lcp_phase[unit] != PHASE_DEAD) {
hexley	0:281d6ff68967	332	lcp_phase[unit] = PHASE_TERMINATE;
hexley	0:281d6ff68967	333	}
hexley	0:281d6ff68967	334	if (f->state == LS_STOPPED && f->flags & (OPT_PASSIVE\|OPT_SILENT)) {
hexley	0:281d6ff68967	335	/*
hexley	0:281d6ff68967	336	* This action is not strictly according to the FSM in RFC1548,
hexley	0:281d6ff68967	337	* but it does mean that the program terminates if you do an
hexley	0:281d6ff68967	338	* lcp_close() in passive/silent mode when a connection hasn't
hexley	0:281d6ff68967	339	* been established.
hexley	0:281d6ff68967	340	*/
hexley	0:281d6ff68967	341	f->state = LS_CLOSED;
hexley	0:281d6ff68967	342	lcp_finished(f);
hexley	0:281d6ff68967	343	} else {
hexley	0:281d6ff68967	344	fsm_close(f, reason);
hexley	0:281d6ff68967	345	}
hexley	0:281d6ff68967	346	}
hexley	0:281d6ff68967	347
hexley	0:281d6ff68967	348
hexley	0:281d6ff68967	349	/*
hexley	0:281d6ff68967	350	* lcp_lowerup - The lower layer is up.
hexley	0:281d6ff68967	351	*/
hexley	0:281d6ff68967	352	void
hexley	0:281d6ff68967	353	lcp_lowerup(int unit)
hexley	0:281d6ff68967	354	{
hexley	0:281d6ff68967	355	lcp_options *wo = &lcp_wantoptions[unit];
hexley	0:281d6ff68967	356
hexley	0:281d6ff68967	357	/*
hexley	0:281d6ff68967	358	* Don't use A/C or protocol compression on transmission,
hexley	0:281d6ff68967	359	* but accept A/C and protocol compressed packets
hexley	0:281d6ff68967	360	* if we are going to ask for A/C and protocol compression.
hexley	0:281d6ff68967	361	*/
hexley	0:281d6ff68967	362	ppp_set_xaccm(unit, &xmit_accm[unit]);
hexley	0:281d6ff68967	363	ppp_send_config(unit, PPP_MRU, 0xffffffffl, 0, 0);
hexley	0:281d6ff68967	364	ppp_recv_config(unit, PPP_MRU, 0x00000000l,
hexley	0:281d6ff68967	365	wo->neg_pcompression, wo->neg_accompression);
hexley	0:281d6ff68967	366	peer_mru[unit] = PPP_MRU;
hexley	0:281d6ff68967	367	lcp_allowoptions[unit].asyncmap = (u_long)xmit_accm[unit][0]
hexley	0:281d6ff68967	368	\| ((u_long)xmit_accm[unit][1] << 8)
hexley	0:281d6ff68967	369	\| ((u_long)xmit_accm[unit][2] << 16)
hexley	0:281d6ff68967	370	\| ((u_long)xmit_accm[unit][3] << 24);
hexley	0:281d6ff68967	371	LCPDEBUG(LOG_INFO, ("lcp_lowerup: asyncmap=%X %X %X %X\n",
hexley	0:281d6ff68967	372	xmit_accm[unit][3],
hexley	0:281d6ff68967	373	xmit_accm[unit][2],
hexley	0:281d6ff68967	374	xmit_accm[unit][1],
hexley	0:281d6ff68967	375	xmit_accm[unit][0]));
hexley	0:281d6ff68967	376
hexley	0:281d6ff68967	377	fsm_lowerup(&lcp_fsm[unit]);
hexley	0:281d6ff68967	378	}
hexley	0:281d6ff68967	379
hexley	0:281d6ff68967	380
hexley	0:281d6ff68967	381	/*
hexley	0:281d6ff68967	382	* lcp_lowerdown - The lower layer is down.
hexley	0:281d6ff68967	383	*/
hexley	0:281d6ff68967	384	void
hexley	0:281d6ff68967	385	lcp_lowerdown(int unit)
hexley	0:281d6ff68967	386	{
hexley	0:281d6ff68967	387	fsm_lowerdown(&lcp_fsm[unit]);
hexley	0:281d6ff68967	388	}
hexley	0:281d6ff68967	389
hexley	0:281d6ff68967	390
hexley	0:281d6ff68967	391	/*
hexley	0:281d6ff68967	392	* lcp_input - Input LCP packet.
hexley	0:281d6ff68967	393	*/
hexley	0:281d6ff68967	394	static void
hexley	0:281d6ff68967	395	lcp_input(int unit, u_char *p, int len)
hexley	0:281d6ff68967	396	{
hexley	0:281d6ff68967	397	fsm *f = &lcp_fsm[unit];
hexley	0:281d6ff68967	398
hexley	0:281d6ff68967	399	fsm_input(f, p, len);
hexley	0:281d6ff68967	400	}
hexley	0:281d6ff68967	401
hexley	0:281d6ff68967	402
hexley	0:281d6ff68967	403	/*
hexley	0:281d6ff68967	404	* lcp_extcode - Handle a LCP-specific code.
hexley	0:281d6ff68967	405	*/
hexley	0:281d6ff68967	406	static int
hexley	0:281d6ff68967	407	lcp_extcode(fsm f, int code, u_char id, u_char inp, int len)
hexley	0:281d6ff68967	408	{
hexley	0:281d6ff68967	409	u_char *magp;
hexley	0:281d6ff68967	410
hexley	0:281d6ff68967	411	switch( code ){
hexley	0:281d6ff68967	412	case PROTREJ:
hexley	0:281d6ff68967	413	lcp_rprotrej(f, inp, len);
hexley	0:281d6ff68967	414	break;
hexley	0:281d6ff68967	415
hexley	0:281d6ff68967	416	case ECHOREQ:
hexley	0:281d6ff68967	417	if (f->state != LS_OPENED) {
hexley	0:281d6ff68967	418	break;
hexley	0:281d6ff68967	419	}
hexley	0:281d6ff68967	420	LCPDEBUG(LOG_INFO, ("lcp: Echo-Request, Rcvd id %d\n", id));
hexley	0:281d6ff68967	421	magp = inp;
hexley	0:281d6ff68967	422	PUTLONG(lcp_gotoptions[f->unit].magicnumber, magp);
hexley	0:281d6ff68967	423	fsm_sdata(f, ECHOREP, id, inp, len);
hexley	0:281d6ff68967	424	break;
hexley	0:281d6ff68967	425
hexley	0:281d6ff68967	426	case ECHOREP:
hexley	0:281d6ff68967	427	lcp_received_echo_reply(f, id, inp, len);
hexley	0:281d6ff68967	428	break;
hexley	0:281d6ff68967	429
hexley	0:281d6ff68967	430	case DISCREQ:
hexley	0:281d6ff68967	431	break;
hexley	0:281d6ff68967	432
hexley	0:281d6ff68967	433	default:
hexley	0:281d6ff68967	434	return 0;
hexley	0:281d6ff68967	435	}
hexley	0:281d6ff68967	436	return 1;
hexley	0:281d6ff68967	437	}
hexley	0:281d6ff68967	438
hexley	0:281d6ff68967	439
hexley	0:281d6ff68967	440	/*
hexley	0:281d6ff68967	441	* lcp_rprotrej - Receive an Protocol-Reject.
hexley	0:281d6ff68967	442	*
hexley	0:281d6ff68967	443	* Figure out which protocol is rejected and inform it.
hexley	0:281d6ff68967	444	*/
hexley	0:281d6ff68967	445	static void
hexley	0:281d6ff68967	446	lcp_rprotrej(fsm f, u_char inp, int len)
hexley	0:281d6ff68967	447	{
hexley	0:281d6ff68967	448	int i;
hexley	0:281d6ff68967	449	struct protent *protp;
hexley	0:281d6ff68967	450	u_short prot;
hexley	0:281d6ff68967	451
hexley	0:281d6ff68967	452	if (len < (int)sizeof (u_short)) {
hexley	0:281d6ff68967	453	LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd short Protocol-Reject packet!\n"));
hexley	0:281d6ff68967	454	return;
hexley	0:281d6ff68967	455	}
hexley	0:281d6ff68967	456
hexley	0:281d6ff68967	457	GETSHORT(prot, inp);
hexley	0:281d6ff68967	458
hexley	0:281d6ff68967	459	LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd Protocol-Reject packet for %x!\n", prot));
hexley	0:281d6ff68967	460
hexley	0:281d6ff68967	461	/*
hexley	0:281d6ff68967	462	* Protocol-Reject packets received in any state other than the LCP
hexley	0:281d6ff68967	463	* LS_OPENED state SHOULD be silently discarded.
hexley	0:281d6ff68967	464	*/
hexley	0:281d6ff68967	465	if( f->state != LS_OPENED ) {
hexley	0:281d6ff68967	466	LCPDEBUG(LOG_INFO, ("Protocol-Reject discarded: LCP in state %d\n", f->state));
hexley	0:281d6ff68967	467	return;
hexley	0:281d6ff68967	468	}
hexley	0:281d6ff68967	469
hexley	0:281d6ff68967	470	/*
hexley	0:281d6ff68967	471	* Upcall the proper Protocol-Reject routine.
hexley	0:281d6ff68967	472	*/
hexley	0:281d6ff68967	473	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
hexley	0:281d6ff68967	474	if (protp->protocol == prot && protp->enabled_flag) {
hexley	0:281d6ff68967	475	(*protp->protrej)(f->unit);
hexley	0:281d6ff68967	476	return;
hexley	0:281d6ff68967	477	}
hexley	0:281d6ff68967	478	}
hexley	0:281d6ff68967	479
hexley	0:281d6ff68967	480	LCPDEBUG(LOG_WARNING, ("Protocol-Reject for unsupported protocol 0x%x\n", prot));
hexley	0:281d6ff68967	481	}
hexley	0:281d6ff68967	482
hexley	0:281d6ff68967	483
hexley	0:281d6ff68967	484	/*
hexley	0:281d6ff68967	485	* lcp_protrej - A Protocol-Reject was received.
hexley	0:281d6ff68967	486	*/
hexley	0:281d6ff68967	487	static void
hexley	0:281d6ff68967	488	lcp_protrej(int unit)
hexley	0:281d6ff68967	489	{
hexley	0:281d6ff68967	490	LWIP_UNUSED_ARG(unit);
hexley	0:281d6ff68967	491	/*
hexley	0:281d6ff68967	492	* Can't reject LCP!
hexley	0:281d6ff68967	493	*/
hexley	0:281d6ff68967	494	LCPDEBUG(LOG_WARNING, ("lcp_protrej: Received Protocol-Reject for LCP!\n"));
hexley	0:281d6ff68967	495	fsm_protreject(&lcp_fsm[unit]);
hexley	0:281d6ff68967	496	}
hexley	0:281d6ff68967	497
hexley	0:281d6ff68967	498
hexley	0:281d6ff68967	499	/*
hexley	0:281d6ff68967	500	* lcp_sprotrej - Send a Protocol-Reject for some protocol.
hexley	0:281d6ff68967	501	*/
hexley	0:281d6ff68967	502	void
hexley	0:281d6ff68967	503	lcp_sprotrej(int unit, u_char *p, int len)
hexley	0:281d6ff68967	504	{
hexley	0:281d6ff68967	505	/*
hexley	0:281d6ff68967	506	* Send back the protocol and the information field of the
hexley	0:281d6ff68967	507	* rejected packet. We only get here if LCP is in the LS_OPENED state.
hexley	0:281d6ff68967	508	*/
hexley	0:281d6ff68967	509
hexley	0:281d6ff68967	510	fsm_sdata(&lcp_fsm[unit], PROTREJ, ++lcp_fsm[unit].id, p, len);
hexley	0:281d6ff68967	511	}
hexley	0:281d6ff68967	512
hexley	0:281d6ff68967	513
hexley	0:281d6ff68967	514	/*
hexley	0:281d6ff68967	515	* lcp_resetci - Reset our CI.
hexley	0:281d6ff68967	516	*/
hexley	0:281d6ff68967	517	static void
hexley	0:281d6ff68967	518	lcp_resetci(fsm *f)
hexley	0:281d6ff68967	519	{
hexley	0:281d6ff68967	520	lcp_wantoptions[f->unit].magicnumber = magic();
hexley	0:281d6ff68967	521	lcp_wantoptions[f->unit].numloops = 0;
hexley	0:281d6ff68967	522	lcp_gotoptions[f->unit] = lcp_wantoptions[f->unit];
hexley	0:281d6ff68967	523	peer_mru[f->unit] = PPP_MRU;
hexley	0:281d6ff68967	524	auth_reset(f->unit);
hexley	0:281d6ff68967	525	}
hexley	0:281d6ff68967	526
hexley	0:281d6ff68967	527
hexley	0:281d6ff68967	528	/*
hexley	0:281d6ff68967	529	* lcp_cilen - Return length of our CI.
hexley	0:281d6ff68967	530	*/
hexley	0:281d6ff68967	531	static int
hexley	0:281d6ff68967	532	lcp_cilen(fsm *f)
hexley	0:281d6ff68967	533	{
hexley	0:281d6ff68967	534	lcp_options *go = &lcp_gotoptions[f->unit];
hexley	0:281d6ff68967	535
hexley	0:281d6ff68967	536	#define LENCIVOID(neg) ((neg) ? CILEN_VOID : 0)
hexley	0:281d6ff68967	537	#define LENCICHAP(neg) ((neg) ? CILEN_CHAP : 0)
hexley	0:281d6ff68967	538	#define LENCISHORT(neg) ((neg) ? CILEN_SHORT : 0)
hexley	0:281d6ff68967	539	#define LENCILONG(neg) ((neg) ? CILEN_LONG : 0)
hexley	0:281d6ff68967	540	#define LENCILQR(neg) ((neg) ? CILEN_LQR: 0)
hexley	0:281d6ff68967	541	#define LENCICBCP(neg) ((neg) ? CILEN_CBCP: 0)
hexley	0:281d6ff68967	542	/*
hexley	0:281d6ff68967	543	* NB: we only ask for one of CHAP and UPAP, even if we will
hexley	0:281d6ff68967	544	* accept either.
hexley	0:281d6ff68967	545	*/
hexley	0:281d6ff68967	546	return (LENCISHORT(go->neg_mru && go->mru != PPP_DEFMRU) +
hexley	0:281d6ff68967	547	LENCILONG(go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) +
hexley	0:281d6ff68967	548	LENCICHAP(go->neg_chap) +
hexley	0:281d6ff68967	549	LENCISHORT(!go->neg_chap && go->neg_upap) +
hexley	0:281d6ff68967	550	LENCILQR(go->neg_lqr) +
hexley	0:281d6ff68967	551	LENCICBCP(go->neg_cbcp) +
hexley	0:281d6ff68967	552	LENCILONG(go->neg_magicnumber) +
hexley	0:281d6ff68967	553	LENCIVOID(go->neg_pcompression) +
hexley	0:281d6ff68967	554	LENCIVOID(go->neg_accompression));
hexley	0:281d6ff68967	555	}
hexley	0:281d6ff68967	556
hexley	0:281d6ff68967	557
hexley	0:281d6ff68967	558	/*
hexley	0:281d6ff68967	559	* lcp_addci - Add our desired CIs to a packet.
hexley	0:281d6ff68967	560	*/
hexley	0:281d6ff68967	561	static void
hexley	0:281d6ff68967	562	lcp_addci(fsm f, u_char ucp, int *lenp)
hexley	0:281d6ff68967	563	{
hexley	0:281d6ff68967	564	lcp_options *go = &lcp_gotoptions[f->unit];
hexley	0:281d6ff68967	565	u_char *start_ucp = ucp;
hexley	0:281d6ff68967	566
hexley	0:281d6ff68967	567	#define ADDCIVOID(opt, neg) \
hexley	0:281d6ff68967	568	if (neg) { \
hexley	0:281d6ff68967	569	LCPDEBUG(LOG_INFO, ("lcp_addci: opt=%d\n", opt)); \
hexley	0:281d6ff68967	570	PUTCHAR(opt, ucp); \
hexley	0:281d6ff68967	571	PUTCHAR(CILEN_VOID, ucp); \
hexley	0:281d6ff68967	572	}
hexley	0:281d6ff68967	573	#define ADDCISHORT(opt, neg, val) \
hexley	0:281d6ff68967	574	if (neg) { \
hexley	0:281d6ff68967	575	LCPDEBUG(LOG_INFO, ("lcp_addci: INT opt=%d %X\n", opt, val)); \
hexley	0:281d6ff68967	576	PUTCHAR(opt, ucp); \
hexley	0:281d6ff68967	577	PUTCHAR(CILEN_SHORT, ucp); \
hexley	0:281d6ff68967	578	PUTSHORT(val, ucp); \
hexley	0:281d6ff68967	579	}
hexley	0:281d6ff68967	580	#define ADDCICHAP(opt, neg, val, digest) \
hexley	0:281d6ff68967	581	if (neg) { \
hexley	0:281d6ff68967	582	LCPDEBUG(LOG_INFO, ("lcp_addci: CHAP opt=%d %X\n", opt, val)); \
hexley	0:281d6ff68967	583	PUTCHAR(opt, ucp); \
hexley	0:281d6ff68967	584	PUTCHAR(CILEN_CHAP, ucp); \
hexley	0:281d6ff68967	585	PUTSHORT(val, ucp); \
hexley	0:281d6ff68967	586	PUTCHAR(digest, ucp); \
hexley	0:281d6ff68967	587	}
hexley	0:281d6ff68967	588	#define ADDCILONG(opt, neg, val) \
hexley	0:281d6ff68967	589	if (neg) { \
hexley	0:281d6ff68967	590	LCPDEBUG(LOG_INFO, ("lcp_addci: L opt=%d %lX\n", opt, val)); \
hexley	0:281d6ff68967	591	PUTCHAR(opt, ucp); \
hexley	0:281d6ff68967	592	PUTCHAR(CILEN_LONG, ucp); \
hexley	0:281d6ff68967	593	PUTLONG(val, ucp); \
hexley	0:281d6ff68967	594	}
hexley	0:281d6ff68967	595	#define ADDCILQR(opt, neg, val) \
hexley	0:281d6ff68967	596	if (neg) { \
hexley	0:281d6ff68967	597	LCPDEBUG(LOG_INFO, ("lcp_addci: LQR opt=%d %lX\n", opt, val)); \
hexley	0:281d6ff68967	598	PUTCHAR(opt, ucp); \
hexley	0:281d6ff68967	599	PUTCHAR(CILEN_LQR, ucp); \
hexley	0:281d6ff68967	600	PUTSHORT(PPP_LQR, ucp); \
hexley	0:281d6ff68967	601	PUTLONG(val, ucp); \
hexley	0:281d6ff68967	602	}
hexley	0:281d6ff68967	603	#define ADDCICHAR(opt, neg, val) \
hexley	0:281d6ff68967	604	if (neg) { \
hexley	0:281d6ff68967	605	LCPDEBUG(LOG_INFO, ("lcp_addci: CHAR opt=%d %X '%z'\n", opt, val, val)); \
hexley	0:281d6ff68967	606	PUTCHAR(opt, ucp); \
hexley	0:281d6ff68967	607	PUTCHAR(CILEN_CHAR, ucp); \
hexley	0:281d6ff68967	608	PUTCHAR(val, ucp); \
hexley	0:281d6ff68967	609	}
hexley	0:281d6ff68967	610
hexley	0:281d6ff68967	611	ADDCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru);
hexley	0:281d6ff68967	612	ADDCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap);
hexley	0:281d6ff68967	613	ADDCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype);
hexley	0:281d6ff68967	614	ADDCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP);
hexley	0:281d6ff68967	615	ADDCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period);
hexley	0:281d6ff68967	616	ADDCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT);
hexley	0:281d6ff68967	617	ADDCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber);
hexley	0:281d6ff68967	618	ADDCIVOID(CI_PCOMPRESSION, go->neg_pcompression);
hexley	0:281d6ff68967	619	ADDCIVOID(CI_ACCOMPRESSION, go->neg_accompression);
hexley	0:281d6ff68967	620
hexley	0:281d6ff68967	621	if (ucp - start_ucp != *lenp) {
hexley	0:281d6ff68967	622	/* this should never happen, because peer_mtu should be 1500 */
hexley	0:281d6ff68967	623	LCPDEBUG(LOG_ERR, ("Bug in lcp_addci: wrong length\n"));
hexley	0:281d6ff68967	624	}
hexley	0:281d6ff68967	625	}
hexley	0:281d6ff68967	626
hexley	0:281d6ff68967	627
hexley	0:281d6ff68967	628	/*
hexley	0:281d6ff68967	629	* lcp_ackci - Ack our CIs.
hexley	0:281d6ff68967	630	* This should not modify any state if the Ack is bad.
hexley	0:281d6ff68967	631	*
hexley	0:281d6ff68967	632	* Returns:
hexley	0:281d6ff68967	633	* 0 - Ack was bad.
hexley	0:281d6ff68967	634	* 1 - Ack was good.
hexley	0:281d6ff68967	635	*/
hexley	0:281d6ff68967	636	static int
hexley	0:281d6ff68967	637	lcp_ackci(fsm f, u_char p, int len)
hexley	0:281d6ff68967	638	{
hexley	0:281d6ff68967	639	lcp_options *go = &lcp_gotoptions[f->unit];
hexley	0:281d6ff68967	640	u_char cilen, citype, cichar;
hexley	0:281d6ff68967	641	u_short cishort;
hexley	0:281d6ff68967	642	u32_t cilong;
hexley	0:281d6ff68967	643
hexley	0:281d6ff68967	644	/*
hexley	0:281d6ff68967	645	* CIs must be in exactly the same order that we sent.
hexley	0:281d6ff68967	646	* Check packet length and CI length at each step.
hexley	0:281d6ff68967	647	* If we find any deviations, then this packet is bad.
hexley	0:281d6ff68967	648	*/
hexley	0:281d6ff68967	649	#define ACKCIVOID(opt, neg) \
hexley	0:281d6ff68967	650	if (neg) { \
hexley	0:281d6ff68967	651	if ((len -= CILEN_VOID) < 0) \
hexley	0:281d6ff68967	652	goto bad; \
hexley	0:281d6ff68967	653	GETCHAR(citype, p); \
hexley	0:281d6ff68967	654	GETCHAR(cilen, p); \
hexley	0:281d6ff68967	655	if (cilen != CILEN_VOID \|\| citype != opt) \
hexley	0:281d6ff68967	656	goto bad; \
hexley	0:281d6ff68967	657	}
hexley	0:281d6ff68967	658	#define ACKCISHORT(opt, neg, val) \
hexley	0:281d6ff68967	659	if (neg) { \
hexley	0:281d6ff68967	660	if ((len -= CILEN_SHORT) < 0) \
hexley	0:281d6ff68967	661	goto bad; \
hexley	0:281d6ff68967	662	GETCHAR(citype, p); \
hexley	0:281d6ff68967	663	GETCHAR(cilen, p); \
hexley	0:281d6ff68967	664	if (cilen != CILEN_SHORT \|\| citype != opt) \
hexley	0:281d6ff68967	665	goto bad; \
hexley	0:281d6ff68967	666	GETSHORT(cishort, p); \
hexley	0:281d6ff68967	667	if (cishort != val) \
hexley	0:281d6ff68967	668	goto bad; \
hexley	0:281d6ff68967	669	}
hexley	0:281d6ff68967	670	#define ACKCICHAR(opt, neg, val) \
hexley	0:281d6ff68967	671	if (neg) { \
hexley	0:281d6ff68967	672	if ((len -= CILEN_CHAR) < 0) \
hexley	0:281d6ff68967	673	goto bad; \
hexley	0:281d6ff68967	674	GETCHAR(citype, p); \
hexley	0:281d6ff68967	675	GETCHAR(cilen, p); \
hexley	0:281d6ff68967	676	if (cilen != CILEN_CHAR \|\| citype != opt) \
hexley	0:281d6ff68967	677	goto bad; \
hexley	0:281d6ff68967	678	GETCHAR(cichar, p); \
hexley	0:281d6ff68967	679	if (cichar != val) \
hexley	0:281d6ff68967	680	goto bad; \
hexley	0:281d6ff68967	681	}
hexley	0:281d6ff68967	682	#define ACKCICHAP(opt, neg, val, digest) \
hexley	0:281d6ff68967	683	if (neg) { \
hexley	0:281d6ff68967	684	if ((len -= CILEN_CHAP) < 0) \
hexley	0:281d6ff68967	685	goto bad; \
hexley	0:281d6ff68967	686	GETCHAR(citype, p); \
hexley	0:281d6ff68967	687	GETCHAR(cilen, p); \
hexley	0:281d6ff68967	688	if (cilen != CILEN_CHAP \|\| citype != opt) \
hexley	0:281d6ff68967	689	goto bad; \
hexley	0:281d6ff68967	690	GETSHORT(cishort, p); \
hexley	0:281d6ff68967	691	if (cishort != val) \
hexley	0:281d6ff68967	692	goto bad; \
hexley	0:281d6ff68967	693	GETCHAR(cichar, p); \
hexley	0:281d6ff68967	694	if (cichar != digest) \
hexley	0:281d6ff68967	695	goto bad; \
hexley	0:281d6ff68967	696	}
hexley	0:281d6ff68967	697	#define ACKCILONG(opt, neg, val) \
hexley	0:281d6ff68967	698	if (neg) { \
hexley	0:281d6ff68967	699	if ((len -= CILEN_LONG) < 0) \
hexley	0:281d6ff68967	700	goto bad; \
hexley	0:281d6ff68967	701	GETCHAR(citype, p); \
hexley	0:281d6ff68967	702	GETCHAR(cilen, p); \
hexley	0:281d6ff68967	703	if (cilen != CILEN_LONG \|\| citype != opt) \
hexley	0:281d6ff68967	704	goto bad; \
hexley	0:281d6ff68967	705	GETLONG(cilong, p); \
hexley	0:281d6ff68967	706	if (cilong != val) \
hexley	0:281d6ff68967	707	goto bad; \
hexley	0:281d6ff68967	708	}
hexley	0:281d6ff68967	709	#define ACKCILQR(opt, neg, val) \
hexley	0:281d6ff68967	710	if (neg) { \
hexley	0:281d6ff68967	711	if ((len -= CILEN_LQR) < 0) \
hexley	0:281d6ff68967	712	goto bad; \
hexley	0:281d6ff68967	713	GETCHAR(citype, p); \
hexley	0:281d6ff68967	714	GETCHAR(cilen, p); \
hexley	0:281d6ff68967	715	if (cilen != CILEN_LQR \|\| citype != opt) \
hexley	0:281d6ff68967	716	goto bad; \
hexley	0:281d6ff68967	717	GETSHORT(cishort, p); \
hexley	0:281d6ff68967	718	if (cishort != PPP_LQR) \
hexley	0:281d6ff68967	719	goto bad; \
hexley	0:281d6ff68967	720	GETLONG(cilong, p); \
hexley	0:281d6ff68967	721	if (cilong != val) \
hexley	0:281d6ff68967	722	goto bad; \
hexley	0:281d6ff68967	723	}
hexley	0:281d6ff68967	724
hexley	0:281d6ff68967	725	ACKCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru);
hexley	0:281d6ff68967	726	ACKCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap);
hexley	0:281d6ff68967	727	ACKCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype);
hexley	0:281d6ff68967	728	ACKCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP);
hexley	0:281d6ff68967	729	ACKCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period);
hexley	0:281d6ff68967	730	ACKCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT);
hexley	0:281d6ff68967	731	ACKCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber);
hexley	0:281d6ff68967	732	ACKCIVOID(CI_PCOMPRESSION, go->neg_pcompression);
hexley	0:281d6ff68967	733	ACKCIVOID(CI_ACCOMPRESSION, go->neg_accompression);
hexley	0:281d6ff68967	734
hexley	0:281d6ff68967	735	/*
hexley	0:281d6ff68967	736	* If there are any remaining CIs, then this packet is bad.
hexley	0:281d6ff68967	737	*/
hexley	0:281d6ff68967	738	if (len != 0) {
hexley	0:281d6ff68967	739	goto bad;
hexley	0:281d6ff68967	740	}
hexley	0:281d6ff68967	741	LCPDEBUG(LOG_INFO, ("lcp_acki: Ack\n"));
hexley	0:281d6ff68967	742	return (1);
hexley	0:281d6ff68967	743	bad:
hexley	0:281d6ff68967	744	LCPDEBUG(LOG_WARNING, ("lcp_acki: received bad Ack!\n"));
hexley	0:281d6ff68967	745	return (0);
hexley	0:281d6ff68967	746	}
hexley	0:281d6ff68967	747
hexley	0:281d6ff68967	748
hexley	0:281d6ff68967	749	/*
hexley	0:281d6ff68967	750	* lcp_nakci - Peer has sent a NAK for some of our CIs.
hexley	0:281d6ff68967	751	* This should not modify any state if the Nak is bad
hexley	0:281d6ff68967	752	* or if LCP is in the LS_OPENED state.
hexley	0:281d6ff68967	753	*
hexley	0:281d6ff68967	754	* Returns:
hexley	0:281d6ff68967	755	* 0 - Nak was bad.
hexley	0:281d6ff68967	756	* 1 - Nak was good.
hexley	0:281d6ff68967	757	*/
hexley	0:281d6ff68967	758	static int
hexley	0:281d6ff68967	759	lcp_nakci(fsm f, u_char p, int len)
hexley	0:281d6ff68967	760	{
hexley	0:281d6ff68967	761	lcp_options *go = &lcp_gotoptions[f->unit];
hexley	0:281d6ff68967	762	lcp_options *wo = &lcp_wantoptions[f->unit];
hexley	0:281d6ff68967	763	u_char citype, cichar, *next;
hexley	0:281d6ff68967	764	u_short cishort;
hexley	0:281d6ff68967	765	u32_t cilong;
hexley	0:281d6ff68967	766	lcp_options no; /* options we've seen Naks for */
hexley	0:281d6ff68967	767	lcp_options try; /* options to request next time */
hexley	0:281d6ff68967	768	int looped_back = 0;
hexley	0:281d6ff68967	769	int cilen;
hexley	0:281d6ff68967	770
hexley	0:281d6ff68967	771	BZERO(&no, sizeof(no));
hexley	0:281d6ff68967	772	try = *go;
hexley	0:281d6ff68967	773
hexley	0:281d6ff68967	774	/*
hexley	0:281d6ff68967	775	* Any Nak'd CIs must be in exactly the same order that we sent.
hexley	0:281d6ff68967	776	* Check packet length and CI length at each step.
hexley	0:281d6ff68967	777	* If we find any deviations, then this packet is bad.
hexley	0:281d6ff68967	778	*/
hexley	0:281d6ff68967	779	#define NAKCIVOID(opt, neg, code) \
hexley	0:281d6ff68967	780	if (go->neg && \
hexley	0:281d6ff68967	781	len >= CILEN_VOID && \
hexley	0:281d6ff68967	782	p[1] == CILEN_VOID && \
hexley	0:281d6ff68967	783	p[0] == opt) { \
hexley	0:281d6ff68967	784	len -= CILEN_VOID; \
hexley	0:281d6ff68967	785	INCPTR(CILEN_VOID, p); \
hexley	0:281d6ff68967	786	no.neg = 1; \
hexley	0:281d6ff68967	787	code \
hexley	0:281d6ff68967	788	}
hexley	0:281d6ff68967	789	#define NAKCICHAP(opt, neg, code) \
hexley	0:281d6ff68967	790	if (go->neg && \
hexley	0:281d6ff68967	791	len >= CILEN_CHAP && \
hexley	0:281d6ff68967	792	p[1] == CILEN_CHAP && \
hexley	0:281d6ff68967	793	p[0] == opt) { \
hexley	0:281d6ff68967	794	len -= CILEN_CHAP; \
hexley	0:281d6ff68967	795	INCPTR(2, p); \
hexley	0:281d6ff68967	796	GETSHORT(cishort, p); \
hexley	0:281d6ff68967	797	GETCHAR(cichar, p); \
hexley	0:281d6ff68967	798	no.neg = 1; \
hexley	0:281d6ff68967	799	code \
hexley	0:281d6ff68967	800	}
hexley	0:281d6ff68967	801	#define NAKCICHAR(opt, neg, code) \
hexley	0:281d6ff68967	802	if (go->neg && \
hexley	0:281d6ff68967	803	len >= CILEN_CHAR && \
hexley	0:281d6ff68967	804	p[1] == CILEN_CHAR && \
hexley	0:281d6ff68967	805	p[0] == opt) { \
hexley	0:281d6ff68967	806	len -= CILEN_CHAR; \
hexley	0:281d6ff68967	807	INCPTR(2, p); \
hexley	0:281d6ff68967	808	GETCHAR(cichar, p); \
hexley	0:281d6ff68967	809	no.neg = 1; \
hexley	0:281d6ff68967	810	code \
hexley	0:281d6ff68967	811	}
hexley	0:281d6ff68967	812	#define NAKCISHORT(opt, neg, code) \
hexley	0:281d6ff68967	813	if (go->neg && \
hexley	0:281d6ff68967	814	len >= CILEN_SHORT && \
hexley	0:281d6ff68967	815	p[1] == CILEN_SHORT && \
hexley	0:281d6ff68967	816	p[0] == opt) { \
hexley	0:281d6ff68967	817	len -= CILEN_SHORT; \
hexley	0:281d6ff68967	818	INCPTR(2, p); \
hexley	0:281d6ff68967	819	GETSHORT(cishort, p); \
hexley	0:281d6ff68967	820	no.neg = 1; \
hexley	0:281d6ff68967	821	code \
hexley	0:281d6ff68967	822	}
hexley	0:281d6ff68967	823	#define NAKCILONG(opt, neg, code) \
hexley	0:281d6ff68967	824	if (go->neg && \
hexley	0:281d6ff68967	825	len >= CILEN_LONG && \
hexley	0:281d6ff68967	826	p[1] == CILEN_LONG && \
hexley	0:281d6ff68967	827	p[0] == opt) { \
hexley	0:281d6ff68967	828	len -= CILEN_LONG; \
hexley	0:281d6ff68967	829	INCPTR(2, p); \
hexley	0:281d6ff68967	830	GETLONG(cilong, p); \
hexley	0:281d6ff68967	831	no.neg = 1; \
hexley	0:281d6ff68967	832	code \
hexley	0:281d6ff68967	833	}
hexley	0:281d6ff68967	834	#define NAKCILQR(opt, neg, code) \
hexley	0:281d6ff68967	835	if (go->neg && \
hexley	0:281d6ff68967	836	len >= CILEN_LQR && \
hexley	0:281d6ff68967	837	p[1] == CILEN_LQR && \
hexley	0:281d6ff68967	838	p[0] == opt) { \
hexley	0:281d6ff68967	839	len -= CILEN_LQR; \
hexley	0:281d6ff68967	840	INCPTR(2, p); \
hexley	0:281d6ff68967	841	GETSHORT(cishort, p); \
hexley	0:281d6ff68967	842	GETLONG(cilong, p); \
hexley	0:281d6ff68967	843	no.neg = 1; \
hexley	0:281d6ff68967	844	code \
hexley	0:281d6ff68967	845	}
hexley	0:281d6ff68967	846
hexley	0:281d6ff68967	847	/*
hexley	0:281d6ff68967	848	* We don't care if they want to send us smaller packets than
hexley	0:281d6ff68967	849	* we want. Therefore, accept any MRU less than what we asked for,
hexley	0:281d6ff68967	850	* but then ignore the new value when setting the MRU in the kernel.
hexley	0:281d6ff68967	851	* If they send us a bigger MRU than what we asked, accept it, up to
hexley	0:281d6ff68967	852	* the limit of the default MRU we'd get if we didn't negotiate.
hexley	0:281d6ff68967	853	*/
hexley	0:281d6ff68967	854	if (go->neg_mru && go->mru != PPP_DEFMRU) {
hexley	0:281d6ff68967	855	NAKCISHORT(CI_MRU, neg_mru,
hexley	0:281d6ff68967	856	if (cishort <= wo->mru \|\| cishort < PPP_DEFMRU) {
hexley	0:281d6ff68967	857	try.mru = cishort;
hexley	0:281d6ff68967	858	}
hexley	0:281d6ff68967	859	);
hexley	0:281d6ff68967	860	}
hexley	0:281d6ff68967	861
hexley	0:281d6ff68967	862	/*
hexley	0:281d6ff68967	863	* Add any characters they want to our (receive-side) asyncmap.
hexley	0:281d6ff68967	864	*/
hexley	0:281d6ff68967	865	if (go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) {
hexley	0:281d6ff68967	866	NAKCILONG(CI_ASYNCMAP, neg_asyncmap,
hexley	0:281d6ff68967	867	try.asyncmap = go->asyncmap \| cilong;
hexley	0:281d6ff68967	868	);
hexley	0:281d6ff68967	869	}
hexley	0:281d6ff68967	870
hexley	0:281d6ff68967	871	/*
hexley	0:281d6ff68967	872	* If they've nak'd our authentication-protocol, check whether
hexley	0:281d6ff68967	873	* they are proposing a different protocol, or a different
hexley	0:281d6ff68967	874	* hash algorithm for CHAP.
hexley	0:281d6ff68967	875	*/
hexley	0:281d6ff68967	876	if ((go->neg_chap \|\| go->neg_upap)
hexley	0:281d6ff68967	877	&& len >= CILEN_SHORT
hexley	0:281d6ff68967	878	&& p[0] == CI_AUTHTYPE && p[1] >= CILEN_SHORT && p[1] <= len) {
hexley	0:281d6ff68967	879	cilen = p[1];
hexley	0:281d6ff68967	880	len -= cilen;
hexley	0:281d6ff68967	881	no.neg_chap = go->neg_chap;
hexley	0:281d6ff68967	882	no.neg_upap = go->neg_upap;
hexley	0:281d6ff68967	883	INCPTR(2, p);
hexley	0:281d6ff68967	884	GETSHORT(cishort, p);
hexley	0:281d6ff68967	885	if (cishort == PPP_PAP && cilen == CILEN_SHORT) {
hexley	0:281d6ff68967	886	/*
hexley	0:281d6ff68967	887	* If we were asking for CHAP, they obviously don't want to do it.
hexley	0:281d6ff68967	888	* If we weren't asking for CHAP, then we were asking for PAP,
hexley	0:281d6ff68967	889	* in which case this Nak is bad.
hexley	0:281d6ff68967	890	*/
hexley	0:281d6ff68967	891	if (!go->neg_chap) {
hexley	0:281d6ff68967	892	goto bad;
hexley	0:281d6ff68967	893	}
hexley	0:281d6ff68967	894	try.neg_chap = 0;
hexley	0:281d6ff68967	895
hexley	0:281d6ff68967	896	} else if (cishort == PPP_CHAP && cilen == CILEN_CHAP) {
hexley	0:281d6ff68967	897	GETCHAR(cichar, p);
hexley	0:281d6ff68967	898	if (go->neg_chap) {
hexley	0:281d6ff68967	899	/*
hexley	0:281d6ff68967	900	* We were asking for CHAP/MD5; they must want a different
hexley	0:281d6ff68967	901	* algorithm. If they can't do MD5, we'll have to stop
hexley	0:281d6ff68967	902	* asking for CHAP.
hexley	0:281d6ff68967	903	*/
hexley	0:281d6ff68967	904	if (cichar != go->chap_mdtype) {
hexley	0:281d6ff68967	905	try.neg_chap = 0;
hexley	0:281d6ff68967	906	}
hexley	0:281d6ff68967	907	} else {
hexley	0:281d6ff68967	908	/*
hexley	0:281d6ff68967	909	* Stop asking for PAP if we were asking for it.
hexley	0:281d6ff68967	910	*/
hexley	0:281d6ff68967	911	try.neg_upap = 0;
hexley	0:281d6ff68967	912	}
hexley	0:281d6ff68967	913
hexley	0:281d6ff68967	914	} else {
hexley	0:281d6ff68967	915	/*
hexley	0:281d6ff68967	916	* We don't recognize what they're suggesting.
hexley	0:281d6ff68967	917	* Stop asking for what we were asking for.
hexley	0:281d6ff68967	918	*/
hexley	0:281d6ff68967	919	if (go->neg_chap) {
hexley	0:281d6ff68967	920	try.neg_chap = 0;
hexley	0:281d6ff68967	921	} else {
hexley	0:281d6ff68967	922	try.neg_upap = 0;
hexley	0:281d6ff68967	923	}
hexley	0:281d6ff68967	924	p += cilen - CILEN_SHORT;
hexley	0:281d6ff68967	925	}
hexley	0:281d6ff68967	926	}
hexley	0:281d6ff68967	927
hexley	0:281d6ff68967	928	/*
hexley	0:281d6ff68967	929	* If they can't cope with our link quality protocol, we'll have
hexley	0:281d6ff68967	930	* to stop asking for LQR. We haven't got any other protocol.
hexley	0:281d6ff68967	931	* If they Nak the reporting period, take their value XXX ?
hexley	0:281d6ff68967	932	*/
hexley	0:281d6ff68967	933	NAKCILQR(CI_QUALITY, neg_lqr,
hexley	0:281d6ff68967	934	if (cishort != PPP_LQR) {
hexley	0:281d6ff68967	935	try.neg_lqr = 0;
hexley	0:281d6ff68967	936	} else {
hexley	0:281d6ff68967	937	try.lqr_period = cilong;
hexley	0:281d6ff68967	938	}
hexley	0:281d6ff68967	939	);
hexley	0:281d6ff68967	940
hexley	0:281d6ff68967	941	/*
hexley	0:281d6ff68967	942	* Only implementing CBCP...not the rest of the callback options
hexley	0:281d6ff68967	943	*/
hexley	0:281d6ff68967	944	NAKCICHAR(CI_CALLBACK, neg_cbcp,
hexley	0:281d6ff68967	945	try.neg_cbcp = 0;
hexley	0:281d6ff68967	946	);
hexley	0:281d6ff68967	947
hexley	0:281d6ff68967	948	/*
hexley	0:281d6ff68967	949	* Check for a looped-back line.
hexley	0:281d6ff68967	950	*/
hexley	0:281d6ff68967	951	NAKCILONG(CI_MAGICNUMBER, neg_magicnumber,
hexley	0:281d6ff68967	952	try.magicnumber = magic();
hexley	0:281d6ff68967	953	looped_back = 1;
hexley	0:281d6ff68967	954	);
hexley	0:281d6ff68967	955
hexley	0:281d6ff68967	956	/*
hexley	0:281d6ff68967	957	* Peer shouldn't send Nak for protocol compression or
hexley	0:281d6ff68967	958	* address/control compression requests; they should send
hexley	0:281d6ff68967	959	* a Reject instead. If they send a Nak, treat it as a Reject.
hexley	0:281d6ff68967	960	*/
hexley	0:281d6ff68967	961	NAKCIVOID(CI_PCOMPRESSION, neg_pcompression,
hexley	0:281d6ff68967	962	try.neg_pcompression = 0;
hexley	0:281d6ff68967	963	);
hexley	0:281d6ff68967	964	NAKCIVOID(CI_ACCOMPRESSION, neg_accompression,
hexley	0:281d6ff68967	965	try.neg_accompression = 0;
hexley	0:281d6ff68967	966	);
hexley	0:281d6ff68967	967
hexley	0:281d6ff68967	968	/*
hexley	0:281d6ff68967	969	* There may be remaining CIs, if the peer is requesting negotiation
hexley	0:281d6ff68967	970	* on an option that we didn't include in our request packet.
hexley	0:281d6ff68967	971	* If we see an option that we requested, or one we've already seen
hexley	0:281d6ff68967	972	* in this packet, then this packet is bad.
hexley	0:281d6ff68967	973	* If we wanted to respond by starting to negotiate on the requested
hexley	0:281d6ff68967	974	* option(s), we could, but we don't, because except for the
hexley	0:281d6ff68967	975	* authentication type and quality protocol, if we are not negotiating
hexley	0:281d6ff68967	976	* an option, it is because we were told not to.
hexley	0:281d6ff68967	977	* For the authentication type, the Nak from the peer means
hexley	0:281d6ff68967	978	* `let me authenticate myself with you' which is a bit pointless.
hexley	0:281d6ff68967	979	* For the quality protocol, the Nak means `ask me to send you quality
hexley	0:281d6ff68967	980	* reports', but if we didn't ask for them, we don't want them.
hexley	0:281d6ff68967	981	* An option we don't recognize represents the peer asking to
hexley	0:281d6ff68967	982	* negotiate some option we don't support, so ignore it.
hexley	0:281d6ff68967	983	*/
hexley	0:281d6ff68967	984	while (len > CILEN_VOID) {
hexley	0:281d6ff68967	985	GETCHAR(citype, p);
hexley	0:281d6ff68967	986	GETCHAR(cilen, p);
hexley	0:281d6ff68967	987	if (cilen < CILEN_VOID \|\| (len -= cilen) < 0) {
hexley	0:281d6ff68967	988	goto bad;
hexley	0:281d6ff68967	989	}
hexley	0:281d6ff68967	990	next = p + cilen - 2;
hexley	0:281d6ff68967	991
hexley	0:281d6ff68967	992	switch (citype) {
hexley	0:281d6ff68967	993	case CI_MRU:
hexley	0:281d6ff68967	994	if ((go->neg_mru && go->mru != PPP_DEFMRU)
hexley	0:281d6ff68967	995	\|\| no.neg_mru \|\| cilen != CILEN_SHORT) {
hexley	0:281d6ff68967	996	goto bad;
hexley	0:281d6ff68967	997	}
hexley	0:281d6ff68967	998	GETSHORT(cishort, p);
hexley	0:281d6ff68967	999	if (cishort < PPP_DEFMRU) {
hexley	0:281d6ff68967	1000	try.mru = cishort;
hexley	0:281d6ff68967	1001	}
hexley	0:281d6ff68967	1002	break;
hexley	0:281d6ff68967	1003	case CI_ASYNCMAP:
hexley	0:281d6ff68967	1004	if ((go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl)
hexley	0:281d6ff68967	1005	\|\| no.neg_asyncmap \|\| cilen != CILEN_LONG) {
hexley	0:281d6ff68967	1006	goto bad;
hexley	0:281d6ff68967	1007	}
hexley	0:281d6ff68967	1008	break;
hexley	0:281d6ff68967	1009	case CI_AUTHTYPE:
hexley	0:281d6ff68967	1010	if (go->neg_chap \|\| no.neg_chap \|\| go->neg_upap \|\| no.neg_upap) {
hexley	0:281d6ff68967	1011	goto bad;
hexley	0:281d6ff68967	1012	}
hexley	0:281d6ff68967	1013	break;
hexley	0:281d6ff68967	1014	case CI_MAGICNUMBER:
hexley	0:281d6ff68967	1015	if (go->neg_magicnumber \|\| no.neg_magicnumber \|\|
hexley	0:281d6ff68967	1016	cilen != CILEN_LONG) {
hexley	0:281d6ff68967	1017	goto bad;
hexley	0:281d6ff68967	1018	}
hexley	0:281d6ff68967	1019	break;
hexley	0:281d6ff68967	1020	case CI_PCOMPRESSION:
hexley	0:281d6ff68967	1021	if (go->neg_pcompression \|\| no.neg_pcompression
hexley	0:281d6ff68967	1022	\|\| cilen != CILEN_VOID) {
hexley	0:281d6ff68967	1023	goto bad;
hexley	0:281d6ff68967	1024	}
hexley	0:281d6ff68967	1025	break;
hexley	0:281d6ff68967	1026	case CI_ACCOMPRESSION:
hexley	0:281d6ff68967	1027	if (go->neg_accompression \|\| no.neg_accompression
hexley	0:281d6ff68967	1028	\|\| cilen != CILEN_VOID) {
hexley	0:281d6ff68967	1029	goto bad;
hexley	0:281d6ff68967	1030	}
hexley	0:281d6ff68967	1031	break;
hexley	0:281d6ff68967	1032	case CI_QUALITY:
hexley	0:281d6ff68967	1033	if (go->neg_lqr \|\| no.neg_lqr \|\| cilen != CILEN_LQR) {
hexley	0:281d6ff68967	1034	goto bad;
hexley	0:281d6ff68967	1035	}
hexley	0:281d6ff68967	1036	break;
hexley	0:281d6ff68967	1037	}
hexley	0:281d6ff68967	1038	p = next;
hexley	0:281d6ff68967	1039	}
hexley	0:281d6ff68967	1040
hexley	0:281d6ff68967	1041	/* If there is still anything left, this packet is bad. */
hexley	0:281d6ff68967	1042	if (len != 0) {
hexley	0:281d6ff68967	1043	goto bad;
hexley	0:281d6ff68967	1044	}
hexley	0:281d6ff68967	1045
hexley	0:281d6ff68967	1046	/*
hexley	0:281d6ff68967	1047	* OK, the Nak is good. Now we can update state.
hexley	0:281d6ff68967	1048	*/
hexley	0:281d6ff68967	1049	if (f->state != LS_OPENED) {
hexley	0:281d6ff68967	1050	if (looped_back) {
hexley	0:281d6ff68967	1051	if (++try.numloops >= lcp_loopbackfail) {
hexley	0:281d6ff68967	1052	LCPDEBUG(LOG_NOTICE, ("Serial line is looped back.\n"));
hexley	0:281d6ff68967	1053	lcp_close(f->unit, "Loopback detected");
hexley	0:281d6ff68967	1054	}
hexley	0:281d6ff68967	1055	} else {
hexley	0:281d6ff68967	1056	try.numloops = 0;
hexley	0:281d6ff68967	1057	}
hexley	0:281d6ff68967	1058	*go = try;
hexley	0:281d6ff68967	1059	}
hexley	0:281d6ff68967	1060
hexley	0:281d6ff68967	1061	return 1;
hexley	0:281d6ff68967	1062
hexley	0:281d6ff68967	1063	bad:
hexley	0:281d6ff68967	1064	LCPDEBUG(LOG_WARNING, ("lcp_nakci: received bad Nak!\n"));
hexley	0:281d6ff68967	1065	return 0;
hexley	0:281d6ff68967	1066	}
hexley	0:281d6ff68967	1067
hexley	0:281d6ff68967	1068
hexley	0:281d6ff68967	1069	/*
hexley	0:281d6ff68967	1070	* lcp_rejci - Peer has Rejected some of our CIs.
hexley	0:281d6ff68967	1071	* This should not modify any state if the Reject is bad
hexley	0:281d6ff68967	1072	* or if LCP is in the LS_OPENED state.
hexley	0:281d6ff68967	1073	*
hexley	0:281d6ff68967	1074	* Returns:
hexley	0:281d6ff68967	1075	* 0 - Reject was bad.
hexley	0:281d6ff68967	1076	* 1 - Reject was good.
hexley	0:281d6ff68967	1077	*/
hexley	0:281d6ff68967	1078	static int
hexley	0:281d6ff68967	1079	lcp_rejci(fsm f, u_char p, int len)
hexley	0:281d6ff68967	1080	{
hexley	0:281d6ff68967	1081	lcp_options *go = &lcp_gotoptions[f->unit];
hexley	0:281d6ff68967	1082	u_char cichar;
hexley	0:281d6ff68967	1083	u_short cishort;
hexley	0:281d6ff68967	1084	u32_t cilong;
hexley	0:281d6ff68967	1085	lcp_options try; /* options to request next time */
hexley	0:281d6ff68967	1086
hexley	0:281d6ff68967	1087	try = *go;
hexley	0:281d6ff68967	1088
hexley	0:281d6ff68967	1089	/*
hexley	0:281d6ff68967	1090	* Any Rejected CIs must be in exactly the same order that we sent.
hexley	0:281d6ff68967	1091	* Check packet length and CI length at each step.
hexley	0:281d6ff68967	1092	* If we find any deviations, then this packet is bad.
hexley	0:281d6ff68967	1093	*/
hexley	0:281d6ff68967	1094	#define REJCIVOID(opt, neg) \
hexley	0:281d6ff68967	1095	if (go->neg && \
hexley	0:281d6ff68967	1096	len >= CILEN_VOID && \
hexley	0:281d6ff68967	1097	p[1] == CILEN_VOID && \
hexley	0:281d6ff68967	1098	p[0] == opt) { \
hexley	0:281d6ff68967	1099	len -= CILEN_VOID; \
hexley	0:281d6ff68967	1100	INCPTR(CILEN_VOID, p); \
hexley	0:281d6ff68967	1101	try.neg = 0; \
hexley	0:281d6ff68967	1102	LCPDEBUG(LOG_INFO, ("lcp_rejci: void opt %d rejected\n", opt)); \
hexley	0:281d6ff68967	1103	}
hexley	0:281d6ff68967	1104	#define REJCISHORT(opt, neg, val) \
hexley	0:281d6ff68967	1105	if (go->neg && \
hexley	0:281d6ff68967	1106	len >= CILEN_SHORT && \
hexley	0:281d6ff68967	1107	p[1] == CILEN_SHORT && \
hexley	0:281d6ff68967	1108	p[0] == opt) { \
hexley	0:281d6ff68967	1109	len -= CILEN_SHORT; \
hexley	0:281d6ff68967	1110	INCPTR(2, p); \
hexley	0:281d6ff68967	1111	GETSHORT(cishort, p); \
hexley	0:281d6ff68967	1112	/* Check rejected value. */ \
hexley	0:281d6ff68967	1113	if (cishort != val) { \
hexley	0:281d6ff68967	1114	goto bad; \
hexley	0:281d6ff68967	1115	} \
hexley	0:281d6ff68967	1116	try.neg = 0; \
hexley	0:281d6ff68967	1117	LCPDEBUG(LOG_INFO, ("lcp_rejci: short opt %d rejected\n", opt)); \
hexley	0:281d6ff68967	1118	}
hexley	0:281d6ff68967	1119	#define REJCICHAP(opt, neg, val, digest) \
hexley	0:281d6ff68967	1120	if (go->neg && \
hexley	0:281d6ff68967	1121	len >= CILEN_CHAP && \
hexley	0:281d6ff68967	1122	p[1] == CILEN_CHAP && \
hexley	0:281d6ff68967	1123	p[0] == opt) { \
hexley	0:281d6ff68967	1124	len -= CILEN_CHAP; \
hexley	0:281d6ff68967	1125	INCPTR(2, p); \
hexley	0:281d6ff68967	1126	GETSHORT(cishort, p); \
hexley	0:281d6ff68967	1127	GETCHAR(cichar, p); \
hexley	0:281d6ff68967	1128	/* Check rejected value. */ \
hexley	0:281d6ff68967	1129	if (cishort != val \|\| cichar != digest) { \
hexley	0:281d6ff68967	1130	goto bad; \
hexley	0:281d6ff68967	1131	} \
hexley	0:281d6ff68967	1132	try.neg = 0; \
hexley	0:281d6ff68967	1133	try.neg_upap = 0; \
hexley	0:281d6ff68967	1134	LCPDEBUG(LOG_INFO, ("lcp_rejci: chap opt %d rejected\n", opt)); \
hexley	0:281d6ff68967	1135	}
hexley	0:281d6ff68967	1136	#define REJCILONG(opt, neg, val) \
hexley	0:281d6ff68967	1137	if (go->neg && \
hexley	0:281d6ff68967	1138	len >= CILEN_LONG && \
hexley	0:281d6ff68967	1139	p[1] == CILEN_LONG && \
hexley	0:281d6ff68967	1140	p[0] == opt) { \
hexley	0:281d6ff68967	1141	len -= CILEN_LONG; \
hexley	0:281d6ff68967	1142	INCPTR(2, p); \
hexley	0:281d6ff68967	1143	GETLONG(cilong, p); \
hexley	0:281d6ff68967	1144	/* Check rejected value. */ \
hexley	0:281d6ff68967	1145	if (cilong != val) { \
hexley	0:281d6ff68967	1146	goto bad; \
hexley	0:281d6ff68967	1147	} \
hexley	0:281d6ff68967	1148	try.neg = 0; \
hexley	0:281d6ff68967	1149	LCPDEBUG(LOG_INFO, ("lcp_rejci: long opt %d rejected\n", opt)); \
hexley	0:281d6ff68967	1150	}
hexley	0:281d6ff68967	1151	#define REJCILQR(opt, neg, val) \
hexley	0:281d6ff68967	1152	if (go->neg && \
hexley	0:281d6ff68967	1153	len >= CILEN_LQR && \
hexley	0:281d6ff68967	1154	p[1] == CILEN_LQR && \
hexley	0:281d6ff68967	1155	p[0] == opt) { \
hexley	0:281d6ff68967	1156	len -= CILEN_LQR; \
hexley	0:281d6ff68967	1157	INCPTR(2, p); \
hexley	0:281d6ff68967	1158	GETSHORT(cishort, p); \
hexley	0:281d6ff68967	1159	GETLONG(cilong, p); \
hexley	0:281d6ff68967	1160	/* Check rejected value. */ \
hexley	0:281d6ff68967	1161	if (cishort != PPP_LQR \|\| cilong != val) { \
hexley	0:281d6ff68967	1162	goto bad; \
hexley	0:281d6ff68967	1163	} \
hexley	0:281d6ff68967	1164	try.neg = 0; \
hexley	0:281d6ff68967	1165	LCPDEBUG(LOG_INFO, ("lcp_rejci: LQR opt %d rejected\n", opt)); \
hexley	0:281d6ff68967	1166	}
hexley	0:281d6ff68967	1167	#define REJCICBCP(opt, neg, val) \
hexley	0:281d6ff68967	1168	if (go->neg && \
hexley	0:281d6ff68967	1169	len >= CILEN_CBCP && \
hexley	0:281d6ff68967	1170	p[1] == CILEN_CBCP && \
hexley	0:281d6ff68967	1171	p[0] == opt) { \
hexley	0:281d6ff68967	1172	len -= CILEN_CBCP; \
hexley	0:281d6ff68967	1173	INCPTR(2, p); \
hexley	0:281d6ff68967	1174	GETCHAR(cichar, p); \
hexley	0:281d6ff68967	1175	/* Check rejected value. */ \
hexley	0:281d6ff68967	1176	if (cichar != val) { \
hexley	0:281d6ff68967	1177	goto bad; \
hexley	0:281d6ff68967	1178	} \
hexley	0:281d6ff68967	1179	try.neg = 0; \
hexley	0:281d6ff68967	1180	LCPDEBUG(LOG_INFO, ("lcp_rejci: Callback opt %d rejected\n", opt)); \
hexley	0:281d6ff68967	1181	}
hexley	0:281d6ff68967	1182
hexley	0:281d6ff68967	1183	REJCISHORT(CI_MRU, neg_mru, go->mru);
hexley	0:281d6ff68967	1184	REJCILONG(CI_ASYNCMAP, neg_asyncmap, go->asyncmap);
hexley	0:281d6ff68967	1185	REJCICHAP(CI_AUTHTYPE, neg_chap, PPP_CHAP, go->chap_mdtype);
hexley	0:281d6ff68967	1186	if (!go->neg_chap) {
hexley	0:281d6ff68967	1187	REJCISHORT(CI_AUTHTYPE, neg_upap, PPP_PAP);
hexley	0:281d6ff68967	1188	}
hexley	0:281d6ff68967	1189	REJCILQR(CI_QUALITY, neg_lqr, go->lqr_period);
hexley	0:281d6ff68967	1190	REJCICBCP(CI_CALLBACK, neg_cbcp, CBCP_OPT);
hexley	0:281d6ff68967	1191	REJCILONG(CI_MAGICNUMBER, neg_magicnumber, go->magicnumber);
hexley	0:281d6ff68967	1192	REJCIVOID(CI_PCOMPRESSION, neg_pcompression);
hexley	0:281d6ff68967	1193	REJCIVOID(CI_ACCOMPRESSION, neg_accompression);
hexley	0:281d6ff68967	1194
hexley	0:281d6ff68967	1195	/*
hexley	0:281d6ff68967	1196	* If there are any remaining CIs, then this packet is bad.
hexley	0:281d6ff68967	1197	*/
hexley	0:281d6ff68967	1198	if (len != 0) {
hexley	0:281d6ff68967	1199	goto bad;
hexley	0:281d6ff68967	1200	}
hexley	0:281d6ff68967	1201	/*
hexley	0:281d6ff68967	1202	* Now we can update state.
hexley	0:281d6ff68967	1203	*/
hexley	0:281d6ff68967	1204	if (f->state != LS_OPENED) {
hexley	0:281d6ff68967	1205	*go = try;
hexley	0:281d6ff68967	1206	}
hexley	0:281d6ff68967	1207	return 1;
hexley	0:281d6ff68967	1208
hexley	0:281d6ff68967	1209	bad:
hexley	0:281d6ff68967	1210	LCPDEBUG(LOG_WARNING, ("lcp_rejci: received bad Reject!\n"));
hexley	0:281d6ff68967	1211	return 0;
hexley	0:281d6ff68967	1212	}
hexley	0:281d6ff68967	1213
hexley	0:281d6ff68967	1214
hexley	0:281d6ff68967	1215	/*
hexley	0:281d6ff68967	1216	* lcp_reqci - Check the peer's requested CIs and send appropriate response.
hexley	0:281d6ff68967	1217	*
hexley	0:281d6ff68967	1218	* Returns: CONFACK, CONFNAK or CONFREJ and input packet modified
hexley	0:281d6ff68967	1219	* appropriately. If reject_if_disagree is non-zero, doesn't return
hexley	0:281d6ff68967	1220	* CONFNAK; returns CONFREJ if it can't return CONFACK.
hexley	0:281d6ff68967	1221	*/
hexley	0:281d6ff68967	1222	static int
hexley	0:281d6ff68967	1223	lcp_reqci(fsm *f,
hexley	0:281d6ff68967	1224	u_char inp, / Requested CIs */
hexley	0:281d6ff68967	1225	int lenp, / Length of requested CIs */
hexley	0:281d6ff68967	1226	int reject_if_disagree)
hexley	0:281d6ff68967	1227	{
hexley	0:281d6ff68967	1228	lcp_options *go = &lcp_gotoptions[f->unit];
hexley	0:281d6ff68967	1229	lcp_options *ho = &lcp_hisoptions[f->unit];
hexley	0:281d6ff68967	1230	lcp_options *ao = &lcp_allowoptions[f->unit];
hexley	0:281d6ff68967	1231	u_char cip, next; /* Pointer to current and next CIs */
hexley	0:281d6ff68967	1232	int cilen, citype; /* Parsed len, type */
hexley	0:281d6ff68967	1233	u_char cichar; /* Parsed char value */
hexley	0:281d6ff68967	1234	u_short cishort; /* Parsed short value */
hexley	0:281d6ff68967	1235	u32_t cilong; /* Parse long value */
hexley	0:281d6ff68967	1236	int rc = CONFACK; /* Final packet return code */
hexley	0:281d6ff68967	1237	int orc; /* Individual option return code */
hexley	0:281d6ff68967	1238	u_char p; / Pointer to next char to parse */
hexley	0:281d6ff68967	1239	u_char rejp; / Pointer to next char in reject frame */
hexley	0:281d6ff68967	1240	u_char nakp; / Pointer to next char in Nak frame */
hexley	0:281d6ff68967	1241	int l = lenp; / Length left */
hexley	0:281d6ff68967	1242	#if TRACELCP > 0
hexley	0:281d6ff68967	1243	char traceBuf[80];
hexley	0:281d6ff68967	1244	size_t traceNdx = 0;
hexley	0:281d6ff68967	1245	#endif
hexley	0:281d6ff68967	1246
hexley	0:281d6ff68967	1247	/*
hexley	0:281d6ff68967	1248	* Reset all his options.
hexley	0:281d6ff68967	1249	*/
hexley	0:281d6ff68967	1250	BZERO(ho, sizeof(*ho));
hexley	0:281d6ff68967	1251
hexley	0:281d6ff68967	1252	/*
hexley	0:281d6ff68967	1253	* Process all his options.
hexley	0:281d6ff68967	1254	*/
hexley	0:281d6ff68967	1255	next = inp;
hexley	0:281d6ff68967	1256	nakp = nak_buffer;
hexley	0:281d6ff68967	1257	rejp = inp;
hexley	0:281d6ff68967	1258	while (l) {
hexley	0:281d6ff68967	1259	orc = CONFACK; /* Assume success */
hexley	0:281d6ff68967	1260	cip = p = next; /* Remember begining of CI */
hexley	0:281d6ff68967	1261	if (l < 2 \|\| /* Not enough data for CI header or */
hexley	0:281d6ff68967	1262	p[1] < 2 \|\| /* CI length too small or */
hexley	0:281d6ff68967	1263	p[1] > l) { /* CI length too big? */
hexley	0:281d6ff68967	1264	LCPDEBUG(LOG_WARNING, ("lcp_reqci: bad CI length!\n"));
hexley	0:281d6ff68967	1265	orc = CONFREJ; /* Reject bad CI */
hexley	0:281d6ff68967	1266	cilen = l; /* Reject till end of packet */
hexley	0:281d6ff68967	1267	l = 0; /* Don't loop again */
hexley	0:281d6ff68967	1268	citype = 0;
hexley	0:281d6ff68967	1269	goto endswitch;
hexley	0:281d6ff68967	1270	}
hexley	0:281d6ff68967	1271	GETCHAR(citype, p); /* Parse CI type */
hexley	0:281d6ff68967	1272	GETCHAR(cilen, p); /* Parse CI length */
hexley	0:281d6ff68967	1273	l -= cilen; /* Adjust remaining length */
hexley	0:281d6ff68967	1274	next += cilen; /* Step to next CI */
hexley	0:281d6ff68967	1275
hexley	0:281d6ff68967	1276	switch (citype) { /* Check CI type */
hexley	0:281d6ff68967	1277	case CI_MRU:
hexley	0:281d6ff68967	1278	if (!ao->neg_mru) { /* Allow option? */
hexley	0:281d6ff68967	1279	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - not allowed\n"));
hexley	0:281d6ff68967	1280	orc = CONFREJ; /* Reject CI */
hexley	0:281d6ff68967	1281	break;
hexley	0:281d6ff68967	1282	} else if (cilen != CILEN_SHORT) { /* Check CI length */
hexley	0:281d6ff68967	1283	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - bad length\n"));
hexley	0:281d6ff68967	1284	orc = CONFREJ; /* Reject CI */
hexley	0:281d6ff68967	1285	break;
hexley	0:281d6ff68967	1286	}
hexley	0:281d6ff68967	1287	GETSHORT(cishort, p); /* Parse MRU */
hexley	0:281d6ff68967	1288
hexley	0:281d6ff68967	1289	/*
hexley	0:281d6ff68967	1290	* He must be able to receive at least our minimum.
hexley	0:281d6ff68967	1291	* No need to check a maximum. If he sends a large number,
hexley	0:281d6ff68967	1292	* we'll just ignore it.
hexley	0:281d6ff68967	1293	*/
hexley	0:281d6ff68967	1294	if (cishort < PPP_MINMRU) {
hexley	0:281d6ff68967	1295	LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak - MRU too small\n"));
hexley	0:281d6ff68967	1296	orc = CONFNAK; /* Nak CI */
hexley	0:281d6ff68967	1297	PUTCHAR(CI_MRU, nakp);
hexley	0:281d6ff68967	1298	PUTCHAR(CILEN_SHORT, nakp);
hexley	0:281d6ff68967	1299	PUTSHORT(PPP_MINMRU, nakp); /* Give him a hint */
hexley	0:281d6ff68967	1300	break;
hexley	0:281d6ff68967	1301	}
hexley	0:281d6ff68967	1302	ho->neg_mru = 1; /* Remember he sent MRU */
hexley	0:281d6ff68967	1303	ho->mru = cishort; /* And remember value */
hexley	0:281d6ff68967	1304	#if TRACELCP > 0
hexley	0:281d6ff68967	1305	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MRU %d", cishort);
hexley	0:281d6ff68967	1306	traceNdx = strlen(traceBuf);
hexley	0:281d6ff68967	1307	#endif
hexley	0:281d6ff68967	1308	break;
hexley	0:281d6ff68967	1309
hexley	0:281d6ff68967	1310	case CI_ASYNCMAP:
hexley	0:281d6ff68967	1311	if (!ao->neg_asyncmap) {
hexley	0:281d6ff68967	1312	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP not allowed\n"));
hexley	0:281d6ff68967	1313	orc = CONFREJ;
hexley	0:281d6ff68967	1314	break;
hexley	0:281d6ff68967	1315	} else if (cilen != CILEN_LONG) {
hexley	0:281d6ff68967	1316	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP bad length\n"));
hexley	0:281d6ff68967	1317	orc = CONFREJ;
hexley	0:281d6ff68967	1318	break;
hexley	0:281d6ff68967	1319	}
hexley	0:281d6ff68967	1320	GETLONG(cilong, p);
hexley	0:281d6ff68967	1321
hexley	0:281d6ff68967	1322	/*
hexley	0:281d6ff68967	1323	* Asyncmap must have set at least the bits
hexley	0:281d6ff68967	1324	* which are set in lcp_allowoptions[unit].asyncmap.
hexley	0:281d6ff68967	1325	*/
hexley	0:281d6ff68967	1326	if ((ao->asyncmap & ~cilong) != 0) {
hexley	0:281d6ff68967	1327	LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak ASYNCMAP %lX missing %lX\n",
hexley	0:281d6ff68967	1328	cilong, ao->asyncmap));
hexley	0:281d6ff68967	1329	orc = CONFNAK;
hexley	0:281d6ff68967	1330	PUTCHAR(CI_ASYNCMAP, nakp);
hexley	0:281d6ff68967	1331	PUTCHAR(CILEN_LONG, nakp);
hexley	0:281d6ff68967	1332	PUTLONG(ao->asyncmap \| cilong, nakp);
hexley	0:281d6ff68967	1333	break;
hexley	0:281d6ff68967	1334	}
hexley	0:281d6ff68967	1335	ho->neg_asyncmap = 1;
hexley	0:281d6ff68967	1336	ho->asyncmap = cilong;
hexley	0:281d6ff68967	1337	#if TRACELCP > 0
hexley	0:281d6ff68967	1338	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ASYNCMAP=%lX", cilong);
hexley	0:281d6ff68967	1339	traceNdx = strlen(traceBuf);
hexley	0:281d6ff68967	1340	#endif
hexley	0:281d6ff68967	1341	break;
hexley	0:281d6ff68967	1342
hexley	0:281d6ff68967	1343	case CI_AUTHTYPE:
hexley	0:281d6ff68967	1344	if (cilen < CILEN_SHORT) {
hexley	0:281d6ff68967	1345	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE missing arg\n"));
hexley	0:281d6ff68967	1346	orc = CONFREJ;
hexley	0:281d6ff68967	1347	break;
hexley	0:281d6ff68967	1348	} else if (!(ao->neg_upap \|\| ao->neg_chap)) {
hexley	0:281d6ff68967	1349	/*
hexley	0:281d6ff68967	1350	* Reject the option if we're not willing to authenticate.
hexley	0:281d6ff68967	1351	*/
hexley	0:281d6ff68967	1352	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE not allowed\n"));
hexley	0:281d6ff68967	1353	orc = CONFREJ;
hexley	0:281d6ff68967	1354	break;
hexley	0:281d6ff68967	1355	}
hexley	0:281d6ff68967	1356	GETSHORT(cishort, p);
hexley	0:281d6ff68967	1357
hexley	0:281d6ff68967	1358	/*
hexley	0:281d6ff68967	1359	* Authtype must be UPAP or CHAP.
hexley	0:281d6ff68967	1360	*
hexley	0:281d6ff68967	1361	* Note: if both ao->neg_upap and ao->neg_chap are set,
hexley	0:281d6ff68967	1362	* and the peer sends a Configure-Request with two
hexley	0:281d6ff68967	1363	* authenticate-protocol requests, one for CHAP and one
hexley	0:281d6ff68967	1364	* for UPAP, then we will reject the second request.
hexley	0:281d6ff68967	1365	* Whether we end up doing CHAP or UPAP depends then on
hexley	0:281d6ff68967	1366	* the ordering of the CIs in the peer's Configure-Request.
hexley	0:281d6ff68967	1367	*/
hexley	0:281d6ff68967	1368
hexley	0:281d6ff68967	1369	if (cishort == PPP_PAP) {
hexley	0:281d6ff68967	1370	if (ho->neg_chap) { /* we've already accepted CHAP */
hexley	0:281d6ff68967	1371	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP already accepted\n"));
hexley	0:281d6ff68967	1372	orc = CONFREJ;
hexley	0:281d6ff68967	1373	break;
hexley	0:281d6ff68967	1374	} else if (cilen != CILEN_SHORT) {
hexley	0:281d6ff68967	1375	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP bad len\n"));
hexley	0:281d6ff68967	1376	orc = CONFREJ;
hexley	0:281d6ff68967	1377	break;
hexley	0:281d6ff68967	1378	}
hexley	0:281d6ff68967	1379	if (!ao->neg_upap) { /* we don't want to do PAP */
hexley	0:281d6ff68967	1380	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE PAP not allowed\n"));
hexley	0:281d6ff68967	1381	orc = CONFNAK; /* NAK it and suggest CHAP */
hexley	0:281d6ff68967	1382	PUTCHAR(CI_AUTHTYPE, nakp);
hexley	0:281d6ff68967	1383	PUTCHAR(CILEN_CHAP, nakp);
hexley	0:281d6ff68967	1384	PUTSHORT(PPP_CHAP, nakp);
hexley	0:281d6ff68967	1385	PUTCHAR(ao->chap_mdtype, nakp);
hexley	0:281d6ff68967	1386	break;
hexley	0:281d6ff68967	1387	}
hexley	0:281d6ff68967	1388	ho->neg_upap = 1;
hexley	0:281d6ff68967	1389	#if TRACELCP > 0
hexley	0:281d6ff68967	1390	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PAP (%X)", cishort);
hexley	0:281d6ff68967	1391	traceNdx = strlen(traceBuf);
hexley	0:281d6ff68967	1392	#endif
hexley	0:281d6ff68967	1393	break;
hexley	0:281d6ff68967	1394	}
hexley	0:281d6ff68967	1395	if (cishort == PPP_CHAP) {
hexley	0:281d6ff68967	1396	if (ho->neg_upap) { /* we've already accepted PAP */
hexley	0:281d6ff68967	1397	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP accepted PAP\n"));
hexley	0:281d6ff68967	1398	orc = CONFREJ;
hexley	0:281d6ff68967	1399	break;
hexley	0:281d6ff68967	1400	} else if (cilen != CILEN_CHAP) {
hexley	0:281d6ff68967	1401	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP bad len\n"));
hexley	0:281d6ff68967	1402	orc = CONFREJ;
hexley	0:281d6ff68967	1403	break;
hexley	0:281d6ff68967	1404	}
hexley	0:281d6ff68967	1405	if (!ao->neg_chap) { /* we don't want to do CHAP */
hexley	0:281d6ff68967	1406	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP not allowed\n"));
hexley	0:281d6ff68967	1407	orc = CONFNAK; /* NAK it and suggest PAP */
hexley	0:281d6ff68967	1408	PUTCHAR(CI_AUTHTYPE, nakp);
hexley	0:281d6ff68967	1409	PUTCHAR(CILEN_SHORT, nakp);
hexley	0:281d6ff68967	1410	PUTSHORT(PPP_PAP, nakp);
hexley	0:281d6ff68967	1411	break;
hexley	0:281d6ff68967	1412	}
hexley	0:281d6ff68967	1413	GETCHAR(cichar, p); /* get digest type*/
hexley	0:281d6ff68967	1414	if (cichar != CHAP_DIGEST_MD5
hexley	0:281d6ff68967	1415	#if MSCHAP_SUPPORT
hexley	0:281d6ff68967	1416	&& cichar != CHAP_MICROSOFT
hexley	0:281d6ff68967	1417	#endif
hexley	0:281d6ff68967	1418	) {
hexley	0:281d6ff68967	1419	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP digest=%d\n", (int)cichar));
hexley	0:281d6ff68967	1420	orc = CONFNAK;
hexley	0:281d6ff68967	1421	PUTCHAR(CI_AUTHTYPE, nakp);
hexley	0:281d6ff68967	1422	PUTCHAR(CILEN_CHAP, nakp);
hexley	0:281d6ff68967	1423	PUTSHORT(PPP_CHAP, nakp);
hexley	0:281d6ff68967	1424	PUTCHAR(ao->chap_mdtype, nakp);
hexley	0:281d6ff68967	1425	break;
hexley	0:281d6ff68967	1426	}
hexley	0:281d6ff68967	1427	#if TRACELCP > 0
hexley	0:281d6ff68967	1428	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CHAP %X,%d", cishort, (int)cichar);
hexley	0:281d6ff68967	1429	traceNdx = strlen(traceBuf);
hexley	0:281d6ff68967	1430	#endif
hexley	0:281d6ff68967	1431	ho->chap_mdtype = cichar; /* save md type */
hexley	0:281d6ff68967	1432	ho->neg_chap = 1;
hexley	0:281d6ff68967	1433	break;
hexley	0:281d6ff68967	1434	}
hexley	0:281d6ff68967	1435
hexley	0:281d6ff68967	1436	/*
hexley	0:281d6ff68967	1437	* We don't recognize the protocol they're asking for.
hexley	0:281d6ff68967	1438	* Nak it with something we're willing to do.
hexley	0:281d6ff68967	1439	* (At this point we know ao->neg_upap \|\| ao->neg_chap.)
hexley	0:281d6ff68967	1440	*/
hexley	0:281d6ff68967	1441	orc = CONFNAK;
hexley	0:281d6ff68967	1442	PUTCHAR(CI_AUTHTYPE, nakp);
hexley	0:281d6ff68967	1443	if (ao->neg_chap) {
hexley	0:281d6ff68967	1444	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req CHAP\n", cishort));
hexley	0:281d6ff68967	1445	PUTCHAR(CILEN_CHAP, nakp);
hexley	0:281d6ff68967	1446	PUTSHORT(PPP_CHAP, nakp);
hexley	0:281d6ff68967	1447	PUTCHAR(ao->chap_mdtype, nakp);
hexley	0:281d6ff68967	1448	} else {
hexley	0:281d6ff68967	1449	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req PAP\n", cishort));
hexley	0:281d6ff68967	1450	PUTCHAR(CILEN_SHORT, nakp);
hexley	0:281d6ff68967	1451	PUTSHORT(PPP_PAP, nakp);
hexley	0:281d6ff68967	1452	}
hexley	0:281d6ff68967	1453	break;
hexley	0:281d6ff68967	1454
hexley	0:281d6ff68967	1455	case CI_QUALITY:
hexley	0:281d6ff68967	1456	GETSHORT(cishort, p);
hexley	0:281d6ff68967	1457	GETLONG(cilong, p);
hexley	0:281d6ff68967	1458	#if TRACELCP > 0
hexley	0:281d6ff68967	1459	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " QUALITY (%x %x)", cishort, (unsigned int) cilong);
hexley	0:281d6ff68967	1460	traceNdx = strlen(traceBuf);
hexley	0:281d6ff68967	1461	#endif
hexley	0:281d6ff68967	1462
hexley	0:281d6ff68967	1463	if (!ao->neg_lqr \|\|
hexley	0:281d6ff68967	1464	cilen != CILEN_LQR) {
hexley	0:281d6ff68967	1465	orc = CONFREJ;
hexley	0:281d6ff68967	1466	break;
hexley	0:281d6ff68967	1467	}
hexley	0:281d6ff68967	1468
hexley	0:281d6ff68967	1469	/*
hexley	0:281d6ff68967	1470	* Check the protocol and the reporting period.
hexley	0:281d6ff68967	1471	* XXX When should we Nak this, and what with?
hexley	0:281d6ff68967	1472	*/
hexley	0:281d6ff68967	1473	if (cishort != PPP_LQR) {
hexley	0:281d6ff68967	1474	orc = CONFNAK;
hexley	0:281d6ff68967	1475	PUTCHAR(CI_QUALITY, nakp);
hexley	0:281d6ff68967	1476	PUTCHAR(CILEN_LQR, nakp);
hexley	0:281d6ff68967	1477	PUTSHORT(PPP_LQR, nakp);
hexley	0:281d6ff68967	1478	PUTLONG(ao->lqr_period, nakp);
hexley	0:281d6ff68967	1479	break;
hexley	0:281d6ff68967	1480	}
hexley	0:281d6ff68967	1481	break;
hexley	0:281d6ff68967	1482
hexley	0:281d6ff68967	1483	case CI_MAGICNUMBER:
hexley	0:281d6ff68967	1484	if (!(ao->neg_magicnumber \|\| go->neg_magicnumber) \|\|
hexley	0:281d6ff68967	1485	cilen != CILEN_LONG) {
hexley	0:281d6ff68967	1486	orc = CONFREJ;
hexley	0:281d6ff68967	1487	break;
hexley	0:281d6ff68967	1488	}
hexley	0:281d6ff68967	1489	GETLONG(cilong, p);
hexley	0:281d6ff68967	1490	#if TRACELCP > 0
hexley	0:281d6ff68967	1491	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MAGICNUMBER (%lX)", cilong);
hexley	0:281d6ff68967	1492	traceNdx = strlen(traceBuf);
hexley	0:281d6ff68967	1493	#endif
hexley	0:281d6ff68967	1494
hexley	0:281d6ff68967	1495	/*
hexley	0:281d6ff68967	1496	* He must have a different magic number.
hexley	0:281d6ff68967	1497	*/
hexley	0:281d6ff68967	1498	if (go->neg_magicnumber &&
hexley	0:281d6ff68967	1499	cilong == go->magicnumber) {
hexley	0:281d6ff68967	1500	cilong = magic(); /* Don't put magic() inside macro! */
hexley	0:281d6ff68967	1501	orc = CONFNAK;
hexley	0:281d6ff68967	1502	PUTCHAR(CI_MAGICNUMBER, nakp);
hexley	0:281d6ff68967	1503	PUTCHAR(CILEN_LONG, nakp);
hexley	0:281d6ff68967	1504	PUTLONG(cilong, nakp);
hexley	0:281d6ff68967	1505	break;
hexley	0:281d6ff68967	1506	}
hexley	0:281d6ff68967	1507	ho->neg_magicnumber = 1;
hexley	0:281d6ff68967	1508	ho->magicnumber = cilong;
hexley	0:281d6ff68967	1509	break;
hexley	0:281d6ff68967	1510
hexley	0:281d6ff68967	1511
hexley	0:281d6ff68967	1512	case CI_PCOMPRESSION:
hexley	0:281d6ff68967	1513	#if TRACELCP > 0
hexley	0:281d6ff68967	1514	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PCOMPRESSION");
hexley	0:281d6ff68967	1515	traceNdx = strlen(traceBuf);
hexley	0:281d6ff68967	1516	#endif
hexley	0:281d6ff68967	1517	if (!ao->neg_pcompression \|\|
hexley	0:281d6ff68967	1518	cilen != CILEN_VOID) {
hexley	0:281d6ff68967	1519	orc = CONFREJ;
hexley	0:281d6ff68967	1520	break;
hexley	0:281d6ff68967	1521	}
hexley	0:281d6ff68967	1522	ho->neg_pcompression = 1;
hexley	0:281d6ff68967	1523	break;
hexley	0:281d6ff68967	1524
hexley	0:281d6ff68967	1525	case CI_ACCOMPRESSION:
hexley	0:281d6ff68967	1526	#if TRACELCP > 0
hexley	0:281d6ff68967	1527	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ACCOMPRESSION");
hexley	0:281d6ff68967	1528	traceNdx = strlen(traceBuf);
hexley	0:281d6ff68967	1529	#endif
hexley	0:281d6ff68967	1530	if (!ao->neg_accompression \|\|
hexley	0:281d6ff68967	1531	cilen != CILEN_VOID) {
hexley	0:281d6ff68967	1532	orc = CONFREJ;
hexley	0:281d6ff68967	1533	break;
hexley	0:281d6ff68967	1534	}
hexley	0:281d6ff68967	1535	ho->neg_accompression = 1;
hexley	0:281d6ff68967	1536	break;
hexley	0:281d6ff68967	1537
hexley	0:281d6ff68967	1538	case CI_MRRU:
hexley	0:281d6ff68967	1539	#if TRACELCP > 0
hexley	0:281d6ff68967	1540	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_MRRU");
hexley	0:281d6ff68967	1541	traceNdx = strlen(traceBuf);
hexley	0:281d6ff68967	1542	#endif
hexley	0:281d6ff68967	1543	orc = CONFREJ;
hexley	0:281d6ff68967	1544	break;
hexley	0:281d6ff68967	1545
hexley	0:281d6ff68967	1546	case CI_SSNHF:
hexley	0:281d6ff68967	1547	#if TRACELCP > 0
hexley	0:281d6ff68967	1548	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_SSNHF");
hexley	0:281d6ff68967	1549	traceNdx = strlen(traceBuf);
hexley	0:281d6ff68967	1550	#endif
hexley	0:281d6ff68967	1551	orc = CONFREJ;
hexley	0:281d6ff68967	1552	break;
hexley	0:281d6ff68967	1553
hexley	0:281d6ff68967	1554	case CI_EPDISC:
hexley	0:281d6ff68967	1555	#if TRACELCP > 0
hexley	0:281d6ff68967	1556	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_EPDISC");
hexley	0:281d6ff68967	1557	traceNdx = strlen(traceBuf);
hexley	0:281d6ff68967	1558	#endif
hexley	0:281d6ff68967	1559	orc = CONFREJ;
hexley	0:281d6ff68967	1560	break;
hexley	0:281d6ff68967	1561
hexley	0:281d6ff68967	1562	default:
hexley	0:281d6ff68967	1563	#if TRACELCP
hexley	0:281d6ff68967	1564	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " unknown %d", citype);
hexley	0:281d6ff68967	1565	traceNdx = strlen(traceBuf);
hexley	0:281d6ff68967	1566	#endif
hexley	0:281d6ff68967	1567	orc = CONFREJ;
hexley	0:281d6ff68967	1568	break;
hexley	0:281d6ff68967	1569	}
hexley	0:281d6ff68967	1570
hexley	0:281d6ff68967	1571	endswitch:
hexley	0:281d6ff68967	1572	#if TRACELCP
hexley	0:281d6ff68967	1573	if (traceNdx >= 80 - 32) {
hexley	0:281d6ff68967	1574	LCPDEBUG(LOG_INFO, ("lcp_reqci: rcvd%s\n", traceBuf));
hexley	0:281d6ff68967	1575	traceNdx = 0;
hexley	0:281d6ff68967	1576	}
hexley	0:281d6ff68967	1577	#endif
hexley	0:281d6ff68967	1578	if (orc == CONFACK && /* Good CI */
hexley	0:281d6ff68967	1579	rc != CONFACK) { /* but prior CI wasnt? */
hexley	0:281d6ff68967	1580	continue; /* Don't send this one */
hexley	0:281d6ff68967	1581	}
hexley	0:281d6ff68967	1582
hexley	0:281d6ff68967	1583	if (orc == CONFNAK) { /* Nak this CI? */
hexley	0:281d6ff68967	1584	if (reject_if_disagree /* Getting fed up with sending NAKs? */
hexley	0:281d6ff68967	1585	&& citype != CI_MAGICNUMBER) {
hexley	0:281d6ff68967	1586	orc = CONFREJ; /* Get tough if so */
hexley	0:281d6ff68967	1587	} else {
hexley	0:281d6ff68967	1588	if (rc == CONFREJ) { /* Rejecting prior CI? */
hexley	0:281d6ff68967	1589	continue; /* Don't send this one */
hexley	0:281d6ff68967	1590	}
hexley	0:281d6ff68967	1591	rc = CONFNAK;
hexley	0:281d6ff68967	1592	}
hexley	0:281d6ff68967	1593	}
hexley	0:281d6ff68967	1594	if (orc == CONFREJ) { /* Reject this CI */
hexley	0:281d6ff68967	1595	rc = CONFREJ;
hexley	0:281d6ff68967	1596	if (cip != rejp) { /* Need to move rejected CI? */
hexley	0:281d6ff68967	1597	BCOPY(cip, rejp, cilen); /* Move it */
hexley	0:281d6ff68967	1598	}
hexley	0:281d6ff68967	1599	INCPTR(cilen, rejp); /* Update output pointer */
hexley	0:281d6ff68967	1600	}
hexley	0:281d6ff68967	1601	}
hexley	0:281d6ff68967	1602
hexley	0:281d6ff68967	1603	/*
hexley	0:281d6ff68967	1604	* If we wanted to send additional NAKs (for unsent CIs), the
hexley	0:281d6ff68967	1605	* code would go here. The extra NAKs would go at *nakp.
hexley	0:281d6ff68967	1606	* At present there are no cases where we want to ask the
hexley	0:281d6ff68967	1607	* peer to negotiate an option.
hexley	0:281d6ff68967	1608	*/
hexley	0:281d6ff68967	1609
hexley	0:281d6ff68967	1610	switch (rc) {
hexley	0:281d6ff68967	1611	case CONFACK:
hexley	0:281d6ff68967	1612	*lenp = (int)(next - inp);
hexley	0:281d6ff68967	1613	break;
hexley	0:281d6ff68967	1614	case CONFNAK:
hexley	0:281d6ff68967	1615	/*
hexley	0:281d6ff68967	1616	* Copy the Nak'd options from the nak_buffer to the caller's buffer.
hexley	0:281d6ff68967	1617	*/
hexley	0:281d6ff68967	1618	*lenp = (int)(nakp - nak_buffer);
hexley	0:281d6ff68967	1619	BCOPY(nak_buffer, inp, *lenp);
hexley	0:281d6ff68967	1620	break;
hexley	0:281d6ff68967	1621	case CONFREJ:
hexley	0:281d6ff68967	1622	*lenp = (int)(rejp - inp);
hexley	0:281d6ff68967	1623	break;
hexley	0:281d6ff68967	1624	}
hexley	0:281d6ff68967	1625
hexley	0:281d6ff68967	1626	#if TRACELCP > 0
hexley	0:281d6ff68967	1627	if (traceNdx > 0) {
hexley	0:281d6ff68967	1628	LCPDEBUG(LOG_INFO, ("lcp_reqci: %s\n", traceBuf));
hexley	0:281d6ff68967	1629	}
hexley	0:281d6ff68967	1630	#endif
hexley	0:281d6ff68967	1631	LCPDEBUG(LOG_INFO, ("lcp_reqci: returning CONF%s.\n", CODENAME(rc)));
hexley	0:281d6ff68967	1632	return (rc); /* Return final code */
hexley	0:281d6ff68967	1633	}
hexley	0:281d6ff68967	1634
hexley	0:281d6ff68967	1635
hexley	0:281d6ff68967	1636	/*
hexley	0:281d6ff68967	1637	* lcp_up - LCP has come UP.
hexley	0:281d6ff68967	1638	*/
hexley	0:281d6ff68967	1639	static void
hexley	0:281d6ff68967	1640	lcp_up(fsm *f)
hexley	0:281d6ff68967	1641	{
hexley	0:281d6ff68967	1642	lcp_options *wo = &lcp_wantoptions[f->unit];
hexley	0:281d6ff68967	1643	lcp_options *ho = &lcp_hisoptions[f->unit];
hexley	0:281d6ff68967	1644	lcp_options *go = &lcp_gotoptions[f->unit];
hexley	0:281d6ff68967	1645	lcp_options *ao = &lcp_allowoptions[f->unit];
hexley	0:281d6ff68967	1646
hexley	0:281d6ff68967	1647	if (!go->neg_magicnumber) {
hexley	0:281d6ff68967	1648	go->magicnumber = 0;
hexley	0:281d6ff68967	1649	}
hexley	0:281d6ff68967	1650	if (!ho->neg_magicnumber) {
hexley	0:281d6ff68967	1651	ho->magicnumber = 0;
hexley	0:281d6ff68967	1652	}
hexley	0:281d6ff68967	1653
hexley	0:281d6ff68967	1654	/*
hexley	0:281d6ff68967	1655	* Set our MTU to the smaller of the MTU we wanted and
hexley	0:281d6ff68967	1656	* the MRU our peer wanted. If we negotiated an MRU,
hexley	0:281d6ff68967	1657	* set our MRU to the larger of value we wanted and
hexley	0:281d6ff68967	1658	* the value we got in the negotiation.
hexley	0:281d6ff68967	1659	*/
hexley	0:281d6ff68967	1660	ppp_send_config(f->unit, LWIP_MIN(ao->mru, (ho->neg_mru? ho->mru: PPP_MRU)),
hexley	0:281d6ff68967	1661	(ho->neg_asyncmap? ho->asyncmap: 0xffffffffl),
hexley	0:281d6ff68967	1662	ho->neg_pcompression, ho->neg_accompression);
hexley	0:281d6ff68967	1663	/*
hexley	0:281d6ff68967	1664	* If the asyncmap hasn't been negotiated, we really should
hexley	0:281d6ff68967	1665	* set the receive asyncmap to ffffffff, but we set it to 0
hexley	0:281d6ff68967	1666	* for backwards contemptibility.
hexley	0:281d6ff68967	1667	*/
hexley	0:281d6ff68967	1668	ppp_recv_config(f->unit, (go->neg_mru? LWIP_MAX(wo->mru, go->mru): PPP_MRU),
hexley	0:281d6ff68967	1669	(go->neg_asyncmap? go->asyncmap: 0x00000000),
hexley	0:281d6ff68967	1670	go->neg_pcompression, go->neg_accompression);
hexley	0:281d6ff68967	1671
hexley	0:281d6ff68967	1672	if (ho->neg_mru) {
hexley	0:281d6ff68967	1673	peer_mru[f->unit] = ho->mru;
hexley	0:281d6ff68967	1674	}
hexley	0:281d6ff68967	1675
hexley	0:281d6ff68967	1676	lcp_echo_lowerup(f->unit); /* Enable echo messages */
hexley	0:281d6ff68967	1677
hexley	0:281d6ff68967	1678	link_established(f->unit); /* The link is up; authenticate now */
hexley	0:281d6ff68967	1679	}
hexley	0:281d6ff68967	1680
hexley	0:281d6ff68967	1681
hexley	0:281d6ff68967	1682	/*
hexley	0:281d6ff68967	1683	* lcp_down - LCP has gone DOWN.
hexley	0:281d6ff68967	1684	*
hexley	0:281d6ff68967	1685	* Alert other protocols.
hexley	0:281d6ff68967	1686	*/
hexley	0:281d6ff68967	1687	static void
hexley	0:281d6ff68967	1688	lcp_down(fsm *f)
hexley	0:281d6ff68967	1689	{
hexley	0:281d6ff68967	1690	lcp_options *go = &lcp_gotoptions[f->unit];
hexley	0:281d6ff68967	1691
hexley	0:281d6ff68967	1692	lcp_echo_lowerdown(f->unit);
hexley	0:281d6ff68967	1693
hexley	0:281d6ff68967	1694	link_down(f->unit);
hexley	0:281d6ff68967	1695
hexley	0:281d6ff68967	1696	ppp_send_config(f->unit, PPP_MRU, 0xffffffffl, 0, 0);
hexley	0:281d6ff68967	1697	ppp_recv_config(f->unit, PPP_MRU,
hexley	0:281d6ff68967	1698	(go->neg_asyncmap? go->asyncmap: 0x00000000),
hexley	0:281d6ff68967	1699	go->neg_pcompression, go->neg_accompression);
hexley	0:281d6ff68967	1700	peer_mru[f->unit] = PPP_MRU;
hexley	0:281d6ff68967	1701	}
hexley	0:281d6ff68967	1702
hexley	0:281d6ff68967	1703
hexley	0:281d6ff68967	1704	/*
hexley	0:281d6ff68967	1705	* lcp_starting - LCP needs the lower layer up.
hexley	0:281d6ff68967	1706	*/
hexley	0:281d6ff68967	1707	static void
hexley	0:281d6ff68967	1708	lcp_starting(fsm *f)
hexley	0:281d6ff68967	1709	{
hexley	0:281d6ff68967	1710	link_required(f->unit); /* lwip: currently does nothing */
hexley	0:281d6ff68967	1711	}
hexley	0:281d6ff68967	1712
hexley	0:281d6ff68967	1713
hexley	0:281d6ff68967	1714	/*
hexley	0:281d6ff68967	1715	* lcp_finished - LCP has finished with the lower layer.
hexley	0:281d6ff68967	1716	*/
hexley	0:281d6ff68967	1717	static void
hexley	0:281d6ff68967	1718	lcp_finished(fsm *f)
hexley	0:281d6ff68967	1719	{
hexley	0:281d6ff68967	1720	link_terminated(f->unit); /* we are finished with the link */
hexley	0:281d6ff68967	1721	}
hexley	0:281d6ff68967	1722
hexley	0:281d6ff68967	1723
hexley	0:281d6ff68967	1724	#if PPP_ADDITIONAL_CALLBACKS
hexley	0:281d6ff68967	1725	/*
hexley	0:281d6ff68967	1726	* print_string - print a readable representation of a string using
hexley	0:281d6ff68967	1727	* printer.
hexley	0:281d6ff68967	1728	*/
hexley	0:281d6ff68967	1729	static void
hexley	0:281d6ff68967	1730	print_string( char p, int len, void (printer) (void , char , ...), void *arg)
hexley	0:281d6ff68967	1731	{
hexley	0:281d6ff68967	1732	int c;
hexley	0:281d6ff68967	1733
hexley	0:281d6ff68967	1734	printer(arg, "\"");
hexley	0:281d6ff68967	1735	for (; len > 0; --len) {
hexley	0:281d6ff68967	1736	c = *p++;
hexley	0:281d6ff68967	1737	if (' ' <= c && c <= '~') {
hexley	0:281d6ff68967	1738	if (c == '\\' \|\| c == '"') {
hexley	0:281d6ff68967	1739	printer(arg, "\\");
hexley	0:281d6ff68967	1740	}
hexley	0:281d6ff68967	1741	printer(arg, "%c", c);
hexley	0:281d6ff68967	1742	} else {
hexley	0:281d6ff68967	1743	switch (c) {
hexley	0:281d6ff68967	1744	case '\n':
hexley	0:281d6ff68967	1745	printer(arg, "\\n");
hexley	0:281d6ff68967	1746	break;
hexley	0:281d6ff68967	1747	case '\r':
hexley	0:281d6ff68967	1748	printer(arg, "\\r");
hexley	0:281d6ff68967	1749	break;
hexley	0:281d6ff68967	1750	case '\t':
hexley	0:281d6ff68967	1751	printer(arg, "\\t");
hexley	0:281d6ff68967	1752	break;
hexley	0:281d6ff68967	1753	default:
hexley	0:281d6ff68967	1754	printer(arg, "\\%.3o", c);
hexley	0:281d6ff68967	1755	}
hexley	0:281d6ff68967	1756	}
hexley	0:281d6ff68967	1757	}
hexley	0:281d6ff68967	1758	printer(arg, "\"");
hexley	0:281d6ff68967	1759	}
hexley	0:281d6ff68967	1760
hexley	0:281d6ff68967	1761
hexley	0:281d6ff68967	1762	/*
hexley	0:281d6ff68967	1763	* lcp_printpkt - print the contents of an LCP packet.
hexley	0:281d6ff68967	1764	*/
hexley	0:281d6ff68967	1765	static char *lcp_codenames[] = {
hexley	0:281d6ff68967	1766	"ConfReq", "ConfAck", "ConfNak", "ConfRej",
hexley	0:281d6ff68967	1767	"TermReq", "TermAck", "CodeRej", "ProtRej",
hexley	0:281d6ff68967	1768	"EchoReq", "EchoRep", "DiscReq"
hexley	0:281d6ff68967	1769	};
hexley	0:281d6ff68967	1770
hexley	0:281d6ff68967	1771	static int
hexley	0:281d6ff68967	1772	lcp_printpkt( u_char p, int plen, void (printer) (void , char , ...), void *arg)
hexley	0:281d6ff68967	1773	{
hexley	0:281d6ff68967	1774	int code, id, len, olen;
hexley	0:281d6ff68967	1775	u_char pstart, optend;
hexley	0:281d6ff68967	1776	u_short cishort;
hexley	0:281d6ff68967	1777	u32_t cilong;
hexley	0:281d6ff68967	1778
hexley	0:281d6ff68967	1779	if (plen < HEADERLEN) {
hexley	0:281d6ff68967	1780	return 0;
hexley	0:281d6ff68967	1781	}
hexley	0:281d6ff68967	1782	pstart = p;
hexley	0:281d6ff68967	1783	GETCHAR(code, p);
hexley	0:281d6ff68967	1784	GETCHAR(id, p);
hexley	0:281d6ff68967	1785	GETSHORT(len, p);
hexley	0:281d6ff68967	1786	if (len < HEADERLEN \|\| len > plen) {
hexley	0:281d6ff68967	1787	return 0;
hexley	0:281d6ff68967	1788	}
hexley	0:281d6ff68967	1789
hexley	0:281d6ff68967	1790	if (code >= 1 && code <= sizeof(lcp_codenames) / sizeof(char *)) {
hexley	0:281d6ff68967	1791	printer(arg, " %s", lcp_codenames[code-1]);
hexley	0:281d6ff68967	1792	} else {
hexley	0:281d6ff68967	1793	printer(arg, " code=0x%x", code);
hexley	0:281d6ff68967	1794	}
hexley	0:281d6ff68967	1795	printer(arg, " id=0x%x", id);
hexley	0:281d6ff68967	1796	len -= HEADERLEN;
hexley	0:281d6ff68967	1797	switch (code) {
hexley	0:281d6ff68967	1798	case CONFREQ:
hexley	0:281d6ff68967	1799	case CONFACK:
hexley	0:281d6ff68967	1800	case CONFNAK:
hexley	0:281d6ff68967	1801	case CONFREJ:
hexley	0:281d6ff68967	1802	/* print option list */
hexley	0:281d6ff68967	1803	while (len >= 2) {
hexley	0:281d6ff68967	1804	GETCHAR(code, p);
hexley	0:281d6ff68967	1805	GETCHAR(olen, p);
hexley	0:281d6ff68967	1806	p -= 2;
hexley	0:281d6ff68967	1807	if (olen < 2 \|\| olen > len) {
hexley	0:281d6ff68967	1808	break;
hexley	0:281d6ff68967	1809	}
hexley	0:281d6ff68967	1810	printer(arg, " <");
hexley	0:281d6ff68967	1811	len -= olen;
hexley	0:281d6ff68967	1812	optend = p + olen;
hexley	0:281d6ff68967	1813	switch (code) {
hexley	0:281d6ff68967	1814	case CI_MRU:
hexley	0:281d6ff68967	1815	if (olen == CILEN_SHORT) {
hexley	0:281d6ff68967	1816	p += 2;
hexley	0:281d6ff68967	1817	GETSHORT(cishort, p);
hexley	0:281d6ff68967	1818	printer(arg, "mru %d", cishort);
hexley	0:281d6ff68967	1819	}
hexley	0:281d6ff68967	1820	break;
hexley	0:281d6ff68967	1821	case CI_ASYNCMAP:
hexley	0:281d6ff68967	1822	if (olen == CILEN_LONG) {
hexley	0:281d6ff68967	1823	p += 2;
hexley	0:281d6ff68967	1824	GETLONG(cilong, p);
hexley	0:281d6ff68967	1825	printer(arg, "asyncmap 0x%lx", cilong);
hexley	0:281d6ff68967	1826	}
hexley	0:281d6ff68967	1827	break;
hexley	0:281d6ff68967	1828	case CI_AUTHTYPE:
hexley	0:281d6ff68967	1829	if (olen >= CILEN_SHORT) {
hexley	0:281d6ff68967	1830	p += 2;
hexley	0:281d6ff68967	1831	printer(arg, "auth ");
hexley	0:281d6ff68967	1832	GETSHORT(cishort, p);
hexley	0:281d6ff68967	1833	switch (cishort) {
hexley	0:281d6ff68967	1834	case PPP_PAP:
hexley	0:281d6ff68967	1835	printer(arg, "pap");
hexley	0:281d6ff68967	1836	break;
hexley	0:281d6ff68967	1837	case PPP_CHAP:
hexley	0:281d6ff68967	1838	printer(arg, "chap");
hexley	0:281d6ff68967	1839	break;
hexley	0:281d6ff68967	1840	default:
hexley	0:281d6ff68967	1841	printer(arg, "0x%x", cishort);
hexley	0:281d6ff68967	1842	}
hexley	0:281d6ff68967	1843	}
hexley	0:281d6ff68967	1844	break;
hexley	0:281d6ff68967	1845	case CI_QUALITY:
hexley	0:281d6ff68967	1846	if (olen >= CILEN_SHORT) {
hexley	0:281d6ff68967	1847	p += 2;
hexley	0:281d6ff68967	1848	printer(arg, "quality ");
hexley	0:281d6ff68967	1849	GETSHORT(cishort, p);
hexley	0:281d6ff68967	1850	switch (cishort) {
hexley	0:281d6ff68967	1851	case PPP_LQR:
hexley	0:281d6ff68967	1852	printer(arg, "lqr");
hexley	0:281d6ff68967	1853	break;
hexley	0:281d6ff68967	1854	default:
hexley	0:281d6ff68967	1855	printer(arg, "0x%x", cishort);
hexley	0:281d6ff68967	1856	}
hexley	0:281d6ff68967	1857	}
hexley	0:281d6ff68967	1858	break;
hexley	0:281d6ff68967	1859	case CI_CALLBACK:
hexley	0:281d6ff68967	1860	if (olen >= CILEN_CHAR) {
hexley	0:281d6ff68967	1861	p += 2;
hexley	0:281d6ff68967	1862	printer(arg, "callback ");
hexley	0:281d6ff68967	1863	GETSHORT(cishort, p);
hexley	0:281d6ff68967	1864	switch (cishort) {
hexley	0:281d6ff68967	1865	case CBCP_OPT:
hexley	0:281d6ff68967	1866	printer(arg, "CBCP");
hexley	0:281d6ff68967	1867	break;
hexley	0:281d6ff68967	1868	default:
hexley	0:281d6ff68967	1869	printer(arg, "0x%x", cishort);
hexley	0:281d6ff68967	1870	}
hexley	0:281d6ff68967	1871	}
hexley	0:281d6ff68967	1872	break;
hexley	0:281d6ff68967	1873	case CI_MAGICNUMBER:
hexley	0:281d6ff68967	1874	if (olen == CILEN_LONG) {
hexley	0:281d6ff68967	1875	p += 2;
hexley	0:281d6ff68967	1876	GETLONG(cilong, p);
hexley	0:281d6ff68967	1877	printer(arg, "magic 0x%x", cilong);
hexley	0:281d6ff68967	1878	}
hexley	0:281d6ff68967	1879	break;
hexley	0:281d6ff68967	1880	case CI_PCOMPRESSION:
hexley	0:281d6ff68967	1881	if (olen == CILEN_VOID) {
hexley	0:281d6ff68967	1882	p += 2;
hexley	0:281d6ff68967	1883	printer(arg, "pcomp");
hexley	0:281d6ff68967	1884	}
hexley	0:281d6ff68967	1885	break;
hexley	0:281d6ff68967	1886	case CI_ACCOMPRESSION:
hexley	0:281d6ff68967	1887	if (olen == CILEN_VOID) {
hexley	0:281d6ff68967	1888	p += 2;
hexley	0:281d6ff68967	1889	printer(arg, "accomp");
hexley	0:281d6ff68967	1890	}
hexley	0:281d6ff68967	1891	break;
hexley	0:281d6ff68967	1892	}
hexley	0:281d6ff68967	1893	while (p < optend) {
hexley	0:281d6ff68967	1894	GETCHAR(code, p);
hexley	0:281d6ff68967	1895	printer(arg, " %.2x", code);
hexley	0:281d6ff68967	1896	}
hexley	0:281d6ff68967	1897	printer(arg, ">");
hexley	0:281d6ff68967	1898	}
hexley	0:281d6ff68967	1899	break;
hexley	0:281d6ff68967	1900
hexley	0:281d6ff68967	1901	case TERMACK:
hexley	0:281d6ff68967	1902	case TERMREQ:
hexley	0:281d6ff68967	1903	if (len > 0 && p >= ' ' && p < 0x7f) {
hexley	0:281d6ff68967	1904	printer(arg, " ");
hexley	0:281d6ff68967	1905	print_string((char*)p, len, printer, arg);
hexley	0:281d6ff68967	1906	p += len;
hexley	0:281d6ff68967	1907	len = 0;
hexley	0:281d6ff68967	1908	}
hexley	0:281d6ff68967	1909	break;
hexley	0:281d6ff68967	1910
hexley	0:281d6ff68967	1911	case ECHOREQ:
hexley	0:281d6ff68967	1912	case ECHOREP:
hexley	0:281d6ff68967	1913	case DISCREQ:
hexley	0:281d6ff68967	1914	if (len >= 4) {
hexley	0:281d6ff68967	1915	GETLONG(cilong, p);
hexley	0:281d6ff68967	1916	printer(arg, " magic=0x%x", cilong);
hexley	0:281d6ff68967	1917	p += 4;
hexley	0:281d6ff68967	1918	len -= 4;
hexley	0:281d6ff68967	1919	}
hexley	0:281d6ff68967	1920	break;
hexley	0:281d6ff68967	1921	}
hexley	0:281d6ff68967	1922
hexley	0:281d6ff68967	1923	/* print the rest of the bytes in the packet */
hexley	0:281d6ff68967	1924	for (; len > 0; --len) {
hexley	0:281d6ff68967	1925	GETCHAR(code, p);
hexley	0:281d6ff68967	1926	printer(arg, " %.2x", code);
hexley	0:281d6ff68967	1927	}
hexley	0:281d6ff68967	1928
hexley	0:281d6ff68967	1929	return (int)(p - pstart);
hexley	0:281d6ff68967	1930	}
hexley	0:281d6ff68967	1931	#endif /* PPP_ADDITIONAL_CALLBACKS */
hexley	0:281d6ff68967	1932
hexley	0:281d6ff68967	1933	/*
hexley	0:281d6ff68967	1934	* Time to shut down the link because there is nothing out there.
hexley	0:281d6ff68967	1935	*/
hexley	0:281d6ff68967	1936	static void
hexley	0:281d6ff68967	1937	LcpLinkFailure (fsm *f)
hexley	0:281d6ff68967	1938	{
hexley	0:281d6ff68967	1939	if (f->state == LS_OPENED) {
hexley	0:281d6ff68967	1940	LCPDEBUG(LOG_INFO, ("No response to %d echo-requests\n", lcp_echos_pending));
hexley	0:281d6ff68967	1941	LCPDEBUG(LOG_NOTICE, ("Serial link appears to be disconnected.\n"));
hexley	0:281d6ff68967	1942	lcp_close(f->unit, "Peer not responding");
hexley	0:281d6ff68967	1943	}
hexley	0:281d6ff68967	1944	}
hexley	0:281d6ff68967	1945
hexley	0:281d6ff68967	1946	/*
hexley	0:281d6ff68967	1947	* Timer expired for the LCP echo requests from this process.
hexley	0:281d6ff68967	1948	*/
hexley	0:281d6ff68967	1949	static void
hexley	0:281d6ff68967	1950	LcpEchoCheck (fsm *f)
hexley	0:281d6ff68967	1951	{
hexley	0:281d6ff68967	1952	LcpSendEchoRequest (f);
hexley	0:281d6ff68967	1953
hexley	0:281d6ff68967	1954	/*
hexley	0:281d6ff68967	1955	* Start the timer for the next interval.
hexley	0:281d6ff68967	1956	*/
hexley	0:281d6ff68967	1957	LWIP_ASSERT("lcp_echo_timer_running == 0", lcp_echo_timer_running == 0);
hexley	0:281d6ff68967	1958
hexley	0:281d6ff68967	1959	TIMEOUT (LcpEchoTimeout, f, lcp_echo_interval);
hexley	0:281d6ff68967	1960	lcp_echo_timer_running = 1;
hexley	0:281d6ff68967	1961	}
hexley	0:281d6ff68967	1962
hexley	0:281d6ff68967	1963	/*
hexley	0:281d6ff68967	1964	* LcpEchoTimeout - Timer expired on the LCP echo
hexley	0:281d6ff68967	1965	*/
hexley	0:281d6ff68967	1966	static void
hexley	0:281d6ff68967	1967	LcpEchoTimeout (void *arg)
hexley	0:281d6ff68967	1968	{
hexley	0:281d6ff68967	1969	if (lcp_echo_timer_running != 0) {
hexley	0:281d6ff68967	1970	lcp_echo_timer_running = 0;
hexley	0:281d6ff68967	1971	LcpEchoCheck ((fsm *) arg);
hexley	0:281d6ff68967	1972	}
hexley	0:281d6ff68967	1973	}
hexley	0:281d6ff68967	1974
hexley	0:281d6ff68967	1975	/*
hexley	0:281d6ff68967	1976	* LcpEchoReply - LCP has received a reply to the echo
hexley	0:281d6ff68967	1977	*/
hexley	0:281d6ff68967	1978	static void
hexley	0:281d6ff68967	1979	lcp_received_echo_reply (fsm f, int id, u_char inp, int len)
hexley	0:281d6ff68967	1980	{
hexley	0:281d6ff68967	1981	u32_t magic;
hexley	0:281d6ff68967	1982
hexley	0:281d6ff68967	1983	LWIP_UNUSED_ARG(id);
hexley	0:281d6ff68967	1984
hexley	0:281d6ff68967	1985	/* Check the magic number - don't count replies from ourselves. */
hexley	0:281d6ff68967	1986	if (len < 4) {
hexley	0:281d6ff68967	1987	LCPDEBUG(LOG_WARNING, ("lcp: received short Echo-Reply, length %d\n", len));
hexley	0:281d6ff68967	1988	return;
hexley	0:281d6ff68967	1989	}
hexley	0:281d6ff68967	1990	GETLONG(magic, inp);
hexley	0:281d6ff68967	1991	if (lcp_gotoptions[f->unit].neg_magicnumber && magic == lcp_gotoptions[f->unit].magicnumber) {
hexley	0:281d6ff68967	1992	LCPDEBUG(LOG_WARNING, ("appear to have received our own echo-reply!\n"));
hexley	0:281d6ff68967	1993	return;
hexley	0:281d6ff68967	1994	}
hexley	0:281d6ff68967	1995
hexley	0:281d6ff68967	1996	/* Reset the number of outstanding echo frames */
hexley	0:281d6ff68967	1997	lcp_echos_pending = 0;
hexley	0:281d6ff68967	1998	}
hexley	0:281d6ff68967	1999
hexley	0:281d6ff68967	2000	/*
hexley	0:281d6ff68967	2001	* LcpSendEchoRequest - Send an echo request frame to the peer
hexley	0:281d6ff68967	2002	*/
hexley	0:281d6ff68967	2003	static void
hexley	0:281d6ff68967	2004	LcpSendEchoRequest (fsm *f)
hexley	0:281d6ff68967	2005	{
hexley	0:281d6ff68967	2006	u32_t lcp_magic;
hexley	0:281d6ff68967	2007	u_char pkt[4], *pktp;
hexley	0:281d6ff68967	2008
hexley	0:281d6ff68967	2009	/*
hexley	0:281d6ff68967	2010	* Detect the failure of the peer at this point.
hexley	0:281d6ff68967	2011	*/
hexley	0:281d6ff68967	2012	if (lcp_echo_fails != 0) {
hexley	0:281d6ff68967	2013	if (lcp_echos_pending >= lcp_echo_fails) {
hexley	0:281d6ff68967	2014	LcpLinkFailure(f);
hexley	0:281d6ff68967	2015	lcp_echos_pending = 0;
hexley	0:281d6ff68967	2016	}
hexley	0:281d6ff68967	2017	}
hexley	0:281d6ff68967	2018
hexley	0:281d6ff68967	2019	/*
hexley	0:281d6ff68967	2020	* Make and send the echo request frame.
hexley	0:281d6ff68967	2021	*/
hexley	0:281d6ff68967	2022	if (f->state == LS_OPENED) {
hexley	0:281d6ff68967	2023	lcp_magic = lcp_gotoptions[f->unit].magicnumber;
hexley	0:281d6ff68967	2024	pktp = pkt;
hexley	0:281d6ff68967	2025	PUTLONG(lcp_magic, pktp);
hexley	0:281d6ff68967	2026	fsm_sdata(f, ECHOREQ, (u_char)(lcp_echo_number++ & 0xFF), pkt, (int)(pktp - pkt));
hexley	0:281d6ff68967	2027	++lcp_echos_pending;
hexley	0:281d6ff68967	2028	}
hexley	0:281d6ff68967	2029	}
hexley	0:281d6ff68967	2030
hexley	0:281d6ff68967	2031	/*
hexley	0:281d6ff68967	2032	* lcp_echo_lowerup - Start the timer for the LCP frame
hexley	0:281d6ff68967	2033	*/
hexley	0:281d6ff68967	2034
hexley	0:281d6ff68967	2035	static void
hexley	0:281d6ff68967	2036	lcp_echo_lowerup (int unit)
hexley	0:281d6ff68967	2037	{
hexley	0:281d6ff68967	2038	fsm *f = &lcp_fsm[unit];
hexley	0:281d6ff68967	2039
hexley	0:281d6ff68967	2040	/* Clear the parameters for generating echo frames */
hexley	0:281d6ff68967	2041	lcp_echos_pending = 0;
hexley	0:281d6ff68967	2042	lcp_echo_number = 0;
hexley	0:281d6ff68967	2043	lcp_echo_timer_running = 0;
hexley	0:281d6ff68967	2044
hexley	0:281d6ff68967	2045	/* If a timeout interval is specified then start the timer */
hexley	0:281d6ff68967	2046	if (lcp_echo_interval != 0) {
hexley	0:281d6ff68967	2047	LcpEchoCheck (f);
hexley	0:281d6ff68967	2048	}
hexley	0:281d6ff68967	2049	}
hexley	0:281d6ff68967	2050
hexley	0:281d6ff68967	2051	/*
hexley	0:281d6ff68967	2052	* lcp_echo_lowerdown - Stop the timer for the LCP frame
hexley	0:281d6ff68967	2053	*/
hexley	0:281d6ff68967	2054
hexley	0:281d6ff68967	2055	static void
hexley	0:281d6ff68967	2056	lcp_echo_lowerdown (int unit)
hexley	0:281d6ff68967	2057	{
hexley	0:281d6ff68967	2058	fsm *f = &lcp_fsm[unit];
hexley	0:281d6ff68967	2059
hexley	0:281d6ff68967	2060	if (lcp_echo_timer_running != 0) {
hexley	0:281d6ff68967	2061	UNTIMEOUT (LcpEchoTimeout, f);
hexley	0:281d6ff68967	2062	lcp_echo_timer_running = 0;
hexley	0:281d6ff68967	2063	}
hexley	0:281d6ff68967	2064	}
hexley	0:281d6ff68967	2065
hexley	0:281d6ff68967	2066	#endif /* PPP_SUPPORT */

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Type:	Library
Created:	19 Nov 2010
Imports:	44
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	1

lwip/netif/ppp/lcp.c@0:281d6ff68967, 2010-11-19 (annotated)

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