F7_Ethernet_F746ZG - Forked from the DieterGraef Library

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Forked from the DieterGraef Library

lwip/netif/ppp/lcp.c@0:d26c1b55cfca, 2016-06-19 (annotated)

Committer:: DieterGraef
Date:: Sun Jun 19 16:23:40 2016 +0000
Revision:: 0:d26c1b55cfca

Ethernet Library for Nucleo stm32f746ZG and Disco stm32f746NG  works under arm and gcc environment

Who changed what in which revision?

User	Revision	Line number	New contents of line
DieterGraef	0:d26c1b55cfca	1	/*****************************************************************************
DieterGraef	0:d26c1b55cfca	2	* lcp.c - Network Link Control Protocol program file.
DieterGraef	0:d26c1b55cfca	3	*
DieterGraef	0:d26c1b55cfca	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
DieterGraef	0:d26c1b55cfca	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
DieterGraef	0:d26c1b55cfca	6	*
DieterGraef	0:d26c1b55cfca	7	* The authors hereby grant permission to use, copy, modify, distribute,
DieterGraef	0:d26c1b55cfca	8	* and license this software and its documentation for any purpose, provided
DieterGraef	0:d26c1b55cfca	9	* that existing copyright notices are retained in all copies and that this
DieterGraef	0:d26c1b55cfca	10	* notice and the following disclaimer are included verbatim in any
DieterGraef	0:d26c1b55cfca	11	* distributions. No written agreement, license, or royalty fee is required
DieterGraef	0:d26c1b55cfca	12	* for any of the authorized uses.
DieterGraef	0:d26c1b55cfca	13	*
DieterGraef	0:d26c1b55cfca	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
DieterGraef	0:d26c1b55cfca	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
DieterGraef	0:d26c1b55cfca	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
DieterGraef	0:d26c1b55cfca	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
DieterGraef	0:d26c1b55cfca	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
DieterGraef	0:d26c1b55cfca	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DieterGraef	0:d26c1b55cfca	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
DieterGraef	0:d26c1b55cfca	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
DieterGraef	0:d26c1b55cfca	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
DieterGraef	0:d26c1b55cfca	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
DieterGraef	0:d26c1b55cfca	24	*
DieterGraef	0:d26c1b55cfca	25	******************************************************************************
DieterGraef	0:d26c1b55cfca	26	* REVISION HISTORY
DieterGraef	0:d26c1b55cfca	27	*
DieterGraef	0:d26c1b55cfca	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
DieterGraef	0:d26c1b55cfca	29	* Ported to lwIP.
DieterGraef	0:d26c1b55cfca	30	* 97-12-01 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
DieterGraef	0:d26c1b55cfca	31	* Original.
DieterGraef	0:d26c1b55cfca	32	*****************************************************************************/
DieterGraef	0:d26c1b55cfca	33
DieterGraef	0:d26c1b55cfca	34	/*
DieterGraef	0:d26c1b55cfca	35	* lcp.c - PPP Link Control Protocol.
DieterGraef	0:d26c1b55cfca	36	*
DieterGraef	0:d26c1b55cfca	37	* Copyright (c) 1989 Carnegie Mellon University.
DieterGraef	0:d26c1b55cfca	38	* All rights reserved.
DieterGraef	0:d26c1b55cfca	39	*
DieterGraef	0:d26c1b55cfca	40	* Redistribution and use in source and binary forms are permitted
DieterGraef	0:d26c1b55cfca	41	* provided that the above copyright notice and this paragraph are
DieterGraef	0:d26c1b55cfca	42	* duplicated in all such forms and that any documentation,
DieterGraef	0:d26c1b55cfca	43	* advertising materials, and other materials related to such
DieterGraef	0:d26c1b55cfca	44	* distribution and use acknowledge that the software was developed
DieterGraef	0:d26c1b55cfca	45	* by Carnegie Mellon University. The name of the
DieterGraef	0:d26c1b55cfca	46	* University may not be used to endorse or promote products derived
DieterGraef	0:d26c1b55cfca	47	* from this software without specific prior written permission.
DieterGraef	0:d26c1b55cfca	48	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
DieterGraef	0:d26c1b55cfca	49	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
DieterGraef	0:d26c1b55cfca	50	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
DieterGraef	0:d26c1b55cfca	51	*/
DieterGraef	0:d26c1b55cfca	52
DieterGraef	0:d26c1b55cfca	53
DieterGraef	0:d26c1b55cfca	54	#include "lwip/opt.h"
DieterGraef	0:d26c1b55cfca	55
DieterGraef	0:d26c1b55cfca	56	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
DieterGraef	0:d26c1b55cfca	57
DieterGraef	0:d26c1b55cfca	58	#include "ppp_impl.h"
DieterGraef	0:d26c1b55cfca	59	#include "pppdebug.h"
DieterGraef	0:d26c1b55cfca	60
DieterGraef	0:d26c1b55cfca	61	#include "fsm.h"
DieterGraef	0:d26c1b55cfca	62	#include "chap.h"
DieterGraef	0:d26c1b55cfca	63	#include "magic.h"
DieterGraef	0:d26c1b55cfca	64	#include "auth.h"
DieterGraef	0:d26c1b55cfca	65	#include "lcp.h"
DieterGraef	0:d26c1b55cfca	66
DieterGraef	0:d26c1b55cfca	67	#include <string.h>
DieterGraef	0:d26c1b55cfca	68
DieterGraef	0:d26c1b55cfca	69	#if PPPOE_SUPPORT
DieterGraef	0:d26c1b55cfca	70	#include "netif/ppp_oe.h"
DieterGraef	0:d26c1b55cfca	71	#else
DieterGraef	0:d26c1b55cfca	72	#define PPPOE_MAXMTU PPP_MAXMRU
DieterGraef	0:d26c1b55cfca	73	#endif
DieterGraef	0:d26c1b55cfca	74
DieterGraef	0:d26c1b55cfca	75	#if 0 /* UNUSED */
DieterGraef	0:d26c1b55cfca	76	/*
DieterGraef	0:d26c1b55cfca	77	* LCP-related command-line options.
DieterGraef	0:d26c1b55cfca	78	*/
DieterGraef	0:d26c1b55cfca	79	int lcp_echo_interval = 0; /* Interval between LCP echo-requests */
DieterGraef	0:d26c1b55cfca	80	int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */
DieterGraef	0:d26c1b55cfca	81	bool lax_recv = 0; /* accept control chars in asyncmap */
DieterGraef	0:d26c1b55cfca	82
DieterGraef	0:d26c1b55cfca	83	static int setescape (char **);
DieterGraef	0:d26c1b55cfca	84
DieterGraef	0:d26c1b55cfca	85	static option_t lcp_option_list[] = {
DieterGraef	0:d26c1b55cfca	86	/* LCP options */
DieterGraef	0:d26c1b55cfca	87	/* list stripped for simplicity */
DieterGraef	0:d26c1b55cfca	88	{NULL}
DieterGraef	0:d26c1b55cfca	89	};
DieterGraef	0:d26c1b55cfca	90	#endif /* UNUSED */
DieterGraef	0:d26c1b55cfca	91
DieterGraef	0:d26c1b55cfca	92	/* options */
DieterGraef	0:d26c1b55cfca	93	LinkPhase lcp_phase[NUM_PPP]; /* Phase of link session (RFC 1661) */
DieterGraef	0:d26c1b55cfca	94	static u_int lcp_echo_interval = LCP_ECHOINTERVAL; /* Interval between LCP echo-requests */
DieterGraef	0:d26c1b55cfca	95	static u_int lcp_echo_fails = LCP_MAXECHOFAILS; /* Tolerance to unanswered echo-requests */
DieterGraef	0:d26c1b55cfca	96
DieterGraef	0:d26c1b55cfca	97	/* global vars */
DieterGraef	0:d26c1b55cfca	98	static fsm lcp_fsm[NUM_PPP]; /* LCP fsm structure (global)*/
DieterGraef	0:d26c1b55cfca	99	lcp_options lcp_wantoptions[NUM_PPP]; /* Options that we want to request */
DieterGraef	0:d26c1b55cfca	100	lcp_options lcp_gotoptions[NUM_PPP]; /* Options that peer ack'd */
DieterGraef	0:d26c1b55cfca	101	lcp_options lcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */
DieterGraef	0:d26c1b55cfca	102	lcp_options lcp_hisoptions[NUM_PPP]; /* Options that we ack'd */
DieterGraef	0:d26c1b55cfca	103	ext_accm xmit_accm[NUM_PPP]; /* extended transmit ACCM */
DieterGraef	0:d26c1b55cfca	104
DieterGraef	0:d26c1b55cfca	105	static u32_t lcp_echos_pending = 0; /* Number of outstanding echo msgs */
DieterGraef	0:d26c1b55cfca	106	static u32_t lcp_echo_number = 0; /* ID number of next echo frame */
DieterGraef	0:d26c1b55cfca	107	static u32_t lcp_echo_timer_running = 0; /* TRUE if a timer is running */
DieterGraef	0:d26c1b55cfca	108
DieterGraef	0:d26c1b55cfca	109	/* @todo: do we really need such a large buffer? The typical 1500 bytes seem too much. */
DieterGraef	0:d26c1b55cfca	110	static u_char nak_buffer[PPP_MRU]; /* where we construct a nak packet */
DieterGraef	0:d26c1b55cfca	111
DieterGraef	0:d26c1b55cfca	112	/*
DieterGraef	0:d26c1b55cfca	113	* Callbacks for fsm code. (CI = Configuration Information)
DieterGraef	0:d26c1b55cfca	114	*/
DieterGraef	0:d26c1b55cfca	115	static void lcp_resetci (fsm); / Reset our CI */
DieterGraef	0:d26c1b55cfca	116	static int lcp_cilen (fsm); / Return length of our CI */
DieterGraef	0:d26c1b55cfca	117	static void lcp_addci (fsm, u_char, int); / Add our CI to pkt */
DieterGraef	0:d26c1b55cfca	118	static int lcp_ackci (fsm, u_char, int); /* Peer ack'd our CI */
DieterGraef	0:d26c1b55cfca	119	static int lcp_nakci (fsm, u_char, int); /* Peer nak'd our CI */
DieterGraef	0:d26c1b55cfca	120	static int lcp_rejci (fsm, u_char, int); /* Peer rej'd our CI */
DieterGraef	0:d26c1b55cfca	121	static int lcp_reqci (fsm, u_char, int, int); / Rcv peer CI */
DieterGraef	0:d26c1b55cfca	122	static void lcp_up (fsm); / We're UP */
DieterGraef	0:d26c1b55cfca	123	static void lcp_down (fsm); / We're DOWN */
DieterGraef	0:d26c1b55cfca	124	static void lcp_starting (fsm); / We need lower layer up */
DieterGraef	0:d26c1b55cfca	125	static void lcp_finished (fsm); / We need lower layer down */
DieterGraef	0:d26c1b55cfca	126	static int lcp_extcode (fsm, int, u_char, u_char, int);
DieterGraef	0:d26c1b55cfca	127	static void lcp_rprotrej (fsm, u_char, int);
DieterGraef	0:d26c1b55cfca	128
DieterGraef	0:d26c1b55cfca	129	/*
DieterGraef	0:d26c1b55cfca	130	* routines to send LCP echos to peer
DieterGraef	0:d26c1b55cfca	131	*/
DieterGraef	0:d26c1b55cfca	132
DieterGraef	0:d26c1b55cfca	133	static void lcp_echo_lowerup (int);
DieterGraef	0:d26c1b55cfca	134	static void lcp_echo_lowerdown (int);
DieterGraef	0:d26c1b55cfca	135	static void LcpEchoTimeout (void*);
DieterGraef	0:d26c1b55cfca	136	static void lcp_received_echo_reply (fsm, int, u_char, int);
DieterGraef	0:d26c1b55cfca	137	static void LcpSendEchoRequest (fsm*);
DieterGraef	0:d26c1b55cfca	138	static void LcpLinkFailure (fsm*);
DieterGraef	0:d26c1b55cfca	139	static void LcpEchoCheck (fsm*);
DieterGraef	0:d26c1b55cfca	140
DieterGraef	0:d26c1b55cfca	141	static fsm_callbacks lcp_callbacks = { /* LCP callback routines */
DieterGraef	0:d26c1b55cfca	142	lcp_resetci, /* Reset our Configuration Information */
DieterGraef	0:d26c1b55cfca	143	lcp_cilen, /* Length of our Configuration Information */
DieterGraef	0:d26c1b55cfca	144	lcp_addci, /* Add our Configuration Information */
DieterGraef	0:d26c1b55cfca	145	lcp_ackci, /* ACK our Configuration Information */
DieterGraef	0:d26c1b55cfca	146	lcp_nakci, /* NAK our Configuration Information */
DieterGraef	0:d26c1b55cfca	147	lcp_rejci, /* Reject our Configuration Information */
DieterGraef	0:d26c1b55cfca	148	lcp_reqci, /* Request peer's Configuration Information */
DieterGraef	0:d26c1b55cfca	149	lcp_up, /* Called when fsm reaches LS_OPENED state */
DieterGraef	0:d26c1b55cfca	150	lcp_down, /* Called when fsm leaves LS_OPENED state */
DieterGraef	0:d26c1b55cfca	151	lcp_starting, /* Called when we want the lower layer up */
DieterGraef	0:d26c1b55cfca	152	lcp_finished, /* Called when we want the lower layer down */
DieterGraef	0:d26c1b55cfca	153	NULL, /* Called when Protocol-Reject received */
DieterGraef	0:d26c1b55cfca	154	NULL, /* Retransmission is necessary */
DieterGraef	0:d26c1b55cfca	155	lcp_extcode, /* Called to handle LCP-specific codes */
DieterGraef	0:d26c1b55cfca	156	"LCP" /* String name of protocol */
DieterGraef	0:d26c1b55cfca	157	};
DieterGraef	0:d26c1b55cfca	158
DieterGraef	0:d26c1b55cfca	159	/*
DieterGraef	0:d26c1b55cfca	160	* Protocol entry points.
DieterGraef	0:d26c1b55cfca	161	* Some of these are called directly.
DieterGraef	0:d26c1b55cfca	162	*/
DieterGraef	0:d26c1b55cfca	163
DieterGraef	0:d26c1b55cfca	164	static void lcp_input (int, u_char *, int);
DieterGraef	0:d26c1b55cfca	165	static void lcp_protrej (int);
DieterGraef	0:d26c1b55cfca	166
DieterGraef	0:d26c1b55cfca	167	struct protent lcp_protent = {
DieterGraef	0:d26c1b55cfca	168	PPP_LCP,
DieterGraef	0:d26c1b55cfca	169	lcp_init,
DieterGraef	0:d26c1b55cfca	170	lcp_input,
DieterGraef	0:d26c1b55cfca	171	lcp_protrej,
DieterGraef	0:d26c1b55cfca	172	lcp_lowerup,
DieterGraef	0:d26c1b55cfca	173	lcp_lowerdown,
DieterGraef	0:d26c1b55cfca	174	lcp_open,
DieterGraef	0:d26c1b55cfca	175	lcp_close,
DieterGraef	0:d26c1b55cfca	176	#if PPP_ADDITIONAL_CALLBACKS
DieterGraef	0:d26c1b55cfca	177	lcp_printpkt,
DieterGraef	0:d26c1b55cfca	178	NULL,
DieterGraef	0:d26c1b55cfca	179	#endif /* PPP_ADDITIONAL_CALLBACKS */
DieterGraef	0:d26c1b55cfca	180	1,
DieterGraef	0:d26c1b55cfca	181	"LCP",
DieterGraef	0:d26c1b55cfca	182	#if PPP_ADDITIONAL_CALLBACKS
DieterGraef	0:d26c1b55cfca	183	NULL,
DieterGraef	0:d26c1b55cfca	184	NULL,
DieterGraef	0:d26c1b55cfca	185	NULL
DieterGraef	0:d26c1b55cfca	186	#endif /* PPP_ADDITIONAL_CALLBACKS */
DieterGraef	0:d26c1b55cfca	187	};
DieterGraef	0:d26c1b55cfca	188
DieterGraef	0:d26c1b55cfca	189	int lcp_loopbackfail = DEFLOOPBACKFAIL;
DieterGraef	0:d26c1b55cfca	190
DieterGraef	0:d26c1b55cfca	191	/*
DieterGraef	0:d26c1b55cfca	192	* Length of each type of configuration option (in octets)
DieterGraef	0:d26c1b55cfca	193	*/
DieterGraef	0:d26c1b55cfca	194	#define CILEN_VOID 2
DieterGraef	0:d26c1b55cfca	195	#define CILEN_CHAR 3
DieterGraef	0:d26c1b55cfca	196	#define CILEN_SHORT 4 /* CILEN_VOID + sizeof(short) */
DieterGraef	0:d26c1b55cfca	197	#define CILEN_CHAP 5 /* CILEN_VOID + sizeof(short) + 1 */
DieterGraef	0:d26c1b55cfca	198	#define CILEN_LONG 6 /* CILEN_VOID + sizeof(long) */
DieterGraef	0:d26c1b55cfca	199	#define CILEN_LQR 8 /* CILEN_VOID + sizeof(short) + sizeof(long) */
DieterGraef	0:d26c1b55cfca	200	#define CILEN_CBCP 3
DieterGraef	0:d26c1b55cfca	201
DieterGraef	0:d26c1b55cfca	202	#define CODENAME(x) ((x) == CONFACK ? "ACK" : (x) == CONFNAK ? "NAK" : "REJ")
DieterGraef	0:d26c1b55cfca	203
DieterGraef	0:d26c1b55cfca	204	#if 0 /* UNUSED */
DieterGraef	0:d26c1b55cfca	205	/*
DieterGraef	0:d26c1b55cfca	206	* setescape - add chars to the set we escape on transmission.
DieterGraef	0:d26c1b55cfca	207	*/
DieterGraef	0:d26c1b55cfca	208	static int
DieterGraef	0:d26c1b55cfca	209	setescape(argv)
DieterGraef	0:d26c1b55cfca	210	char **argv;
DieterGraef	0:d26c1b55cfca	211	{
DieterGraef	0:d26c1b55cfca	212	int n, ret;
DieterGraef	0:d26c1b55cfca	213	char p, endp;
DieterGraef	0:d26c1b55cfca	214
DieterGraef	0:d26c1b55cfca	215	p = *argv;
DieterGraef	0:d26c1b55cfca	216	ret = 1;
DieterGraef	0:d26c1b55cfca	217	while (*p) {
DieterGraef	0:d26c1b55cfca	218	n = strtol(p, &endp, 16);
DieterGraef	0:d26c1b55cfca	219	if (p == endp) {
DieterGraef	0:d26c1b55cfca	220	option_error("escape parameter contains invalid hex number '%s'", p);
DieterGraef	0:d26c1b55cfca	221	return 0;
DieterGraef	0:d26c1b55cfca	222	}
DieterGraef	0:d26c1b55cfca	223	p = endp;
DieterGraef	0:d26c1b55cfca	224	if (n < 0 \|\| n == 0x5E \|\| n > 0xFF) {
DieterGraef	0:d26c1b55cfca	225	option_error("can't escape character 0x%x", n);
DieterGraef	0:d26c1b55cfca	226	ret = 0;
DieterGraef	0:d26c1b55cfca	227	} else
DieterGraef	0:d26c1b55cfca	228	xmit_accm[0][n >> 5] \|= 1 << (n & 0x1F);
DieterGraef	0:d26c1b55cfca	229	while (p == ',' \|\| p == ' ')
DieterGraef	0:d26c1b55cfca	230	++p;
DieterGraef	0:d26c1b55cfca	231	}
DieterGraef	0:d26c1b55cfca	232	return ret;
DieterGraef	0:d26c1b55cfca	233	}
DieterGraef	0:d26c1b55cfca	234	#endif /* UNUSED */
DieterGraef	0:d26c1b55cfca	235
DieterGraef	0:d26c1b55cfca	236	/*
DieterGraef	0:d26c1b55cfca	237	* lcp_init - Initialize LCP.
DieterGraef	0:d26c1b55cfca	238	*/
DieterGraef	0:d26c1b55cfca	239	void
DieterGraef	0:d26c1b55cfca	240	lcp_init(int unit)
DieterGraef	0:d26c1b55cfca	241	{
DieterGraef	0:d26c1b55cfca	242	fsm *f = &lcp_fsm[unit];
DieterGraef	0:d26c1b55cfca	243	lcp_options *wo = &lcp_wantoptions[unit];
DieterGraef	0:d26c1b55cfca	244	lcp_options *ao = &lcp_allowoptions[unit];
DieterGraef	0:d26c1b55cfca	245
DieterGraef	0:d26c1b55cfca	246	f->unit = unit;
DieterGraef	0:d26c1b55cfca	247	f->protocol = PPP_LCP;
DieterGraef	0:d26c1b55cfca	248	f->callbacks = &lcp_callbacks;
DieterGraef	0:d26c1b55cfca	249
DieterGraef	0:d26c1b55cfca	250	fsm_init(f);
DieterGraef	0:d26c1b55cfca	251
DieterGraef	0:d26c1b55cfca	252	wo->passive = 0;
DieterGraef	0:d26c1b55cfca	253	wo->silent = 0;
DieterGraef	0:d26c1b55cfca	254	wo->restart = 0; /* Set to 1 in kernels or multi-line implementations */
DieterGraef	0:d26c1b55cfca	255	wo->neg_mru = 1;
DieterGraef	0:d26c1b55cfca	256	wo->mru = PPP_DEFMRU;
DieterGraef	0:d26c1b55cfca	257	wo->neg_asyncmap = 1;
DieterGraef	0:d26c1b55cfca	258	wo->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */
DieterGraef	0:d26c1b55cfca	259	wo->neg_chap = 0; /* Set to 1 on server */
DieterGraef	0:d26c1b55cfca	260	wo->neg_upap = 0; /* Set to 1 on server */
DieterGraef	0:d26c1b55cfca	261	wo->chap_mdtype = CHAP_DIGEST_MD5;
DieterGraef	0:d26c1b55cfca	262	wo->neg_magicnumber = 1;
DieterGraef	0:d26c1b55cfca	263	wo->neg_pcompression = 1;
DieterGraef	0:d26c1b55cfca	264	wo->neg_accompression = 1;
DieterGraef	0:d26c1b55cfca	265	wo->neg_lqr = 0; /* no LQR implementation yet */
DieterGraef	0:d26c1b55cfca	266	wo->neg_cbcp = 0;
DieterGraef	0:d26c1b55cfca	267
DieterGraef	0:d26c1b55cfca	268	ao->neg_mru = 1;
DieterGraef	0:d26c1b55cfca	269	ao->mru = PPP_MAXMRU;
DieterGraef	0:d26c1b55cfca	270	ao->neg_asyncmap = 1;
DieterGraef	0:d26c1b55cfca	271	ao->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */
DieterGraef	0:d26c1b55cfca	272	ao->neg_chap = (CHAP_SUPPORT != 0);
DieterGraef	0:d26c1b55cfca	273	ao->chap_mdtype = CHAP_DIGEST_MD5;
DieterGraef	0:d26c1b55cfca	274	ao->neg_upap = (PAP_SUPPORT != 0);
DieterGraef	0:d26c1b55cfca	275	ao->neg_magicnumber = 1;
DieterGraef	0:d26c1b55cfca	276	ao->neg_pcompression = 1;
DieterGraef	0:d26c1b55cfca	277	ao->neg_accompression = 1;
DieterGraef	0:d26c1b55cfca	278	ao->neg_lqr = 0; /* no LQR implementation yet */
DieterGraef	0:d26c1b55cfca	279	ao->neg_cbcp = (CBCP_SUPPORT != 0);
DieterGraef	0:d26c1b55cfca	280
DieterGraef	0:d26c1b55cfca	281	/*
DieterGraef	0:d26c1b55cfca	282	* Set transmit escape for the flag and escape characters plus anything
DieterGraef	0:d26c1b55cfca	283	* set for the allowable options.
DieterGraef	0:d26c1b55cfca	284	*/
DieterGraef	0:d26c1b55cfca	285	memset(xmit_accm[unit], 0, sizeof(xmit_accm[0]));
DieterGraef	0:d26c1b55cfca	286	xmit_accm[unit][15] = 0x60;
DieterGraef	0:d26c1b55cfca	287	xmit_accm[unit][0] = (u_char)((ao->asyncmap & 0xFF));
DieterGraef	0:d26c1b55cfca	288	xmit_accm[unit][1] = (u_char)((ao->asyncmap >> 8) & 0xFF);
DieterGraef	0:d26c1b55cfca	289	xmit_accm[unit][2] = (u_char)((ao->asyncmap >> 16) & 0xFF);
DieterGraef	0:d26c1b55cfca	290	xmit_accm[unit][3] = (u_char)((ao->asyncmap >> 24) & 0xFF);
DieterGraef	0:d26c1b55cfca	291	LCPDEBUG(LOG_INFO, ("lcp_init: xmit_accm=%X %X %X %X\n",
DieterGraef	0:d26c1b55cfca	292	xmit_accm[unit][0],
DieterGraef	0:d26c1b55cfca	293	xmit_accm[unit][1],
DieterGraef	0:d26c1b55cfca	294	xmit_accm[unit][2],
DieterGraef	0:d26c1b55cfca	295	xmit_accm[unit][3]));
DieterGraef	0:d26c1b55cfca	296
DieterGraef	0:d26c1b55cfca	297	lcp_phase[unit] = PHASE_INITIALIZE;
DieterGraef	0:d26c1b55cfca	298	}
DieterGraef	0:d26c1b55cfca	299
DieterGraef	0:d26c1b55cfca	300
DieterGraef	0:d26c1b55cfca	301	/*
DieterGraef	0:d26c1b55cfca	302	* lcp_open - LCP is allowed to come up.
DieterGraef	0:d26c1b55cfca	303	*/
DieterGraef	0:d26c1b55cfca	304	void
DieterGraef	0:d26c1b55cfca	305	lcp_open(int unit)
DieterGraef	0:d26c1b55cfca	306	{
DieterGraef	0:d26c1b55cfca	307	fsm *f = &lcp_fsm[unit];
DieterGraef	0:d26c1b55cfca	308	lcp_options *wo = &lcp_wantoptions[unit];
DieterGraef	0:d26c1b55cfca	309
DieterGraef	0:d26c1b55cfca	310	f->flags = 0;
DieterGraef	0:d26c1b55cfca	311	if (wo->passive) {
DieterGraef	0:d26c1b55cfca	312	f->flags \|= OPT_PASSIVE;
DieterGraef	0:d26c1b55cfca	313	}
DieterGraef	0:d26c1b55cfca	314	if (wo->silent) {
DieterGraef	0:d26c1b55cfca	315	f->flags \|= OPT_SILENT;
DieterGraef	0:d26c1b55cfca	316	}
DieterGraef	0:d26c1b55cfca	317	fsm_open(f);
DieterGraef	0:d26c1b55cfca	318
DieterGraef	0:d26c1b55cfca	319	lcp_phase[unit] = PHASE_ESTABLISH;
DieterGraef	0:d26c1b55cfca	320	}
DieterGraef	0:d26c1b55cfca	321
DieterGraef	0:d26c1b55cfca	322
DieterGraef	0:d26c1b55cfca	323	/*
DieterGraef	0:d26c1b55cfca	324	* lcp_close - Take LCP down.
DieterGraef	0:d26c1b55cfca	325	*/
DieterGraef	0:d26c1b55cfca	326	void
DieterGraef	0:d26c1b55cfca	327	lcp_close(int unit, char *reason)
DieterGraef	0:d26c1b55cfca	328	{
DieterGraef	0:d26c1b55cfca	329	fsm *f = &lcp_fsm[unit];
DieterGraef	0:d26c1b55cfca	330
DieterGraef	0:d26c1b55cfca	331	if (lcp_phase[unit] != PHASE_DEAD) {
DieterGraef	0:d26c1b55cfca	332	lcp_phase[unit] = PHASE_TERMINATE;
DieterGraef	0:d26c1b55cfca	333	}
DieterGraef	0:d26c1b55cfca	334	if (f->state == LS_STOPPED && f->flags & (OPT_PASSIVE\|OPT_SILENT)) {
DieterGraef	0:d26c1b55cfca	335	/*
DieterGraef	0:d26c1b55cfca	336	* This action is not strictly according to the FSM in RFC1548,
DieterGraef	0:d26c1b55cfca	337	* but it does mean that the program terminates if you do an
DieterGraef	0:d26c1b55cfca	338	* lcp_close() in passive/silent mode when a connection hasn't
DieterGraef	0:d26c1b55cfca	339	* been established.
DieterGraef	0:d26c1b55cfca	340	*/
DieterGraef	0:d26c1b55cfca	341	f->state = LS_CLOSED;
DieterGraef	0:d26c1b55cfca	342	lcp_finished(f);
DieterGraef	0:d26c1b55cfca	343	} else {
DieterGraef	0:d26c1b55cfca	344	fsm_close(f, reason);
DieterGraef	0:d26c1b55cfca	345	}
DieterGraef	0:d26c1b55cfca	346	}
DieterGraef	0:d26c1b55cfca	347
DieterGraef	0:d26c1b55cfca	348
DieterGraef	0:d26c1b55cfca	349	/*
DieterGraef	0:d26c1b55cfca	350	* lcp_lowerup - The lower layer is up.
DieterGraef	0:d26c1b55cfca	351	*/
DieterGraef	0:d26c1b55cfca	352	void
DieterGraef	0:d26c1b55cfca	353	lcp_lowerup(int unit)
DieterGraef	0:d26c1b55cfca	354	{
DieterGraef	0:d26c1b55cfca	355	lcp_options *wo = &lcp_wantoptions[unit];
DieterGraef	0:d26c1b55cfca	356
DieterGraef	0:d26c1b55cfca	357	/*
DieterGraef	0:d26c1b55cfca	358	* Don't use A/C or protocol compression on transmission,
DieterGraef	0:d26c1b55cfca	359	* but accept A/C and protocol compressed packets
DieterGraef	0:d26c1b55cfca	360	* if we are going to ask for A/C and protocol compression.
DieterGraef	0:d26c1b55cfca	361	*/
DieterGraef	0:d26c1b55cfca	362	ppp_set_xaccm(unit, &xmit_accm[unit]);
DieterGraef	0:d26c1b55cfca	363	ppp_send_config(unit, PPP_MRU, 0xffffffffl, 0, 0);
DieterGraef	0:d26c1b55cfca	364	ppp_recv_config(unit, PPP_MRU, 0x00000000l,
DieterGraef	0:d26c1b55cfca	365	wo->neg_pcompression, wo->neg_accompression);
DieterGraef	0:d26c1b55cfca	366	peer_mru[unit] = PPP_MRU;
DieterGraef	0:d26c1b55cfca	367	lcp_allowoptions[unit].asyncmap = (u_long)xmit_accm[unit][0]
DieterGraef	0:d26c1b55cfca	368	\| ((u_long)xmit_accm[unit][1] << 8)
DieterGraef	0:d26c1b55cfca	369	\| ((u_long)xmit_accm[unit][2] << 16)
DieterGraef	0:d26c1b55cfca	370	\| ((u_long)xmit_accm[unit][3] << 24);
DieterGraef	0:d26c1b55cfca	371	LCPDEBUG(LOG_INFO, ("lcp_lowerup: asyncmap=%X %X %X %X\n",
DieterGraef	0:d26c1b55cfca	372	xmit_accm[unit][3],
DieterGraef	0:d26c1b55cfca	373	xmit_accm[unit][2],
DieterGraef	0:d26c1b55cfca	374	xmit_accm[unit][1],
DieterGraef	0:d26c1b55cfca	375	xmit_accm[unit][0]));
DieterGraef	0:d26c1b55cfca	376
DieterGraef	0:d26c1b55cfca	377	fsm_lowerup(&lcp_fsm[unit]);
DieterGraef	0:d26c1b55cfca	378	}
DieterGraef	0:d26c1b55cfca	379
DieterGraef	0:d26c1b55cfca	380
DieterGraef	0:d26c1b55cfca	381	/*
DieterGraef	0:d26c1b55cfca	382	* lcp_lowerdown - The lower layer is down.
DieterGraef	0:d26c1b55cfca	383	*/
DieterGraef	0:d26c1b55cfca	384	void
DieterGraef	0:d26c1b55cfca	385	lcp_lowerdown(int unit)
DieterGraef	0:d26c1b55cfca	386	{
DieterGraef	0:d26c1b55cfca	387	fsm_lowerdown(&lcp_fsm[unit]);
DieterGraef	0:d26c1b55cfca	388	}
DieterGraef	0:d26c1b55cfca	389
DieterGraef	0:d26c1b55cfca	390
DieterGraef	0:d26c1b55cfca	391	/*
DieterGraef	0:d26c1b55cfca	392	* lcp_input - Input LCP packet.
DieterGraef	0:d26c1b55cfca	393	*/
DieterGraef	0:d26c1b55cfca	394	static void
DieterGraef	0:d26c1b55cfca	395	lcp_input(int unit, u_char *p, int len)
DieterGraef	0:d26c1b55cfca	396	{
DieterGraef	0:d26c1b55cfca	397	fsm *f = &lcp_fsm[unit];
DieterGraef	0:d26c1b55cfca	398
DieterGraef	0:d26c1b55cfca	399	fsm_input(f, p, len);
DieterGraef	0:d26c1b55cfca	400	}
DieterGraef	0:d26c1b55cfca	401
DieterGraef	0:d26c1b55cfca	402
DieterGraef	0:d26c1b55cfca	403	/*
DieterGraef	0:d26c1b55cfca	404	* lcp_extcode - Handle a LCP-specific code.
DieterGraef	0:d26c1b55cfca	405	*/
DieterGraef	0:d26c1b55cfca	406	static int
DieterGraef	0:d26c1b55cfca	407	lcp_extcode(fsm f, int code, u_char id, u_char inp, int len)
DieterGraef	0:d26c1b55cfca	408	{
DieterGraef	0:d26c1b55cfca	409	u_char *magp;
DieterGraef	0:d26c1b55cfca	410
DieterGraef	0:d26c1b55cfca	411	switch( code ){
DieterGraef	0:d26c1b55cfca	412	case PROTREJ:
DieterGraef	0:d26c1b55cfca	413	lcp_rprotrej(f, inp, len);
DieterGraef	0:d26c1b55cfca	414	break;
DieterGraef	0:d26c1b55cfca	415
DieterGraef	0:d26c1b55cfca	416	case ECHOREQ:
DieterGraef	0:d26c1b55cfca	417	if (f->state != LS_OPENED) {
DieterGraef	0:d26c1b55cfca	418	break;
DieterGraef	0:d26c1b55cfca	419	}
DieterGraef	0:d26c1b55cfca	420	LCPDEBUG(LOG_INFO, ("lcp: Echo-Request, Rcvd id %d\n", id));
DieterGraef	0:d26c1b55cfca	421	magp = inp;
DieterGraef	0:d26c1b55cfca	422	PUTLONG(lcp_gotoptions[f->unit].magicnumber, magp);
DieterGraef	0:d26c1b55cfca	423	fsm_sdata(f, ECHOREP, id, inp, len);
DieterGraef	0:d26c1b55cfca	424	break;
DieterGraef	0:d26c1b55cfca	425
DieterGraef	0:d26c1b55cfca	426	case ECHOREP:
DieterGraef	0:d26c1b55cfca	427	lcp_received_echo_reply(f, id, inp, len);
DieterGraef	0:d26c1b55cfca	428	break;
DieterGraef	0:d26c1b55cfca	429
DieterGraef	0:d26c1b55cfca	430	case DISCREQ:
DieterGraef	0:d26c1b55cfca	431	break;
DieterGraef	0:d26c1b55cfca	432
DieterGraef	0:d26c1b55cfca	433	default:
DieterGraef	0:d26c1b55cfca	434	return 0;
DieterGraef	0:d26c1b55cfca	435	}
DieterGraef	0:d26c1b55cfca	436	return 1;
DieterGraef	0:d26c1b55cfca	437	}
DieterGraef	0:d26c1b55cfca	438
DieterGraef	0:d26c1b55cfca	439
DieterGraef	0:d26c1b55cfca	440	/*
DieterGraef	0:d26c1b55cfca	441	* lcp_rprotrej - Receive an Protocol-Reject.
DieterGraef	0:d26c1b55cfca	442	*
DieterGraef	0:d26c1b55cfca	443	* Figure out which protocol is rejected and inform it.
DieterGraef	0:d26c1b55cfca	444	*/
DieterGraef	0:d26c1b55cfca	445	static void
DieterGraef	0:d26c1b55cfca	446	lcp_rprotrej(fsm f, u_char inp, int len)
DieterGraef	0:d26c1b55cfca	447	{
DieterGraef	0:d26c1b55cfca	448	int i;
DieterGraef	0:d26c1b55cfca	449	struct protent *protp;
DieterGraef	0:d26c1b55cfca	450	u_short prot;
DieterGraef	0:d26c1b55cfca	451
DieterGraef	0:d26c1b55cfca	452	if (len < (int)sizeof (u_short)) {
DieterGraef	0:d26c1b55cfca	453	LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd short Protocol-Reject packet!\n"));
DieterGraef	0:d26c1b55cfca	454	return;
DieterGraef	0:d26c1b55cfca	455	}
DieterGraef	0:d26c1b55cfca	456
DieterGraef	0:d26c1b55cfca	457	GETSHORT(prot, inp);
DieterGraef	0:d26c1b55cfca	458
DieterGraef	0:d26c1b55cfca	459	LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd Protocol-Reject packet for %x!\n", prot));
DieterGraef	0:d26c1b55cfca	460
DieterGraef	0:d26c1b55cfca	461	/*
DieterGraef	0:d26c1b55cfca	462	* Protocol-Reject packets received in any state other than the LCP
DieterGraef	0:d26c1b55cfca	463	* LS_OPENED state SHOULD be silently discarded.
DieterGraef	0:d26c1b55cfca	464	*/
DieterGraef	0:d26c1b55cfca	465	if( f->state != LS_OPENED ) {
DieterGraef	0:d26c1b55cfca	466	LCPDEBUG(LOG_INFO, ("Protocol-Reject discarded: LCP in state %d\n", f->state));
DieterGraef	0:d26c1b55cfca	467	return;
DieterGraef	0:d26c1b55cfca	468	}
DieterGraef	0:d26c1b55cfca	469
DieterGraef	0:d26c1b55cfca	470	/*
DieterGraef	0:d26c1b55cfca	471	* Upcall the proper Protocol-Reject routine.
DieterGraef	0:d26c1b55cfca	472	*/
DieterGraef	0:d26c1b55cfca	473	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
DieterGraef	0:d26c1b55cfca	474	if (protp->protocol == prot && protp->enabled_flag) {
DieterGraef	0:d26c1b55cfca	475	(*protp->protrej)(f->unit);
DieterGraef	0:d26c1b55cfca	476	return;
DieterGraef	0:d26c1b55cfca	477	}
DieterGraef	0:d26c1b55cfca	478	}
DieterGraef	0:d26c1b55cfca	479
DieterGraef	0:d26c1b55cfca	480	LCPDEBUG(LOG_WARNING, ("Protocol-Reject for unsupported protocol 0x%x\n", prot));
DieterGraef	0:d26c1b55cfca	481	}
DieterGraef	0:d26c1b55cfca	482
DieterGraef	0:d26c1b55cfca	483
DieterGraef	0:d26c1b55cfca	484	/*
DieterGraef	0:d26c1b55cfca	485	* lcp_protrej - A Protocol-Reject was received.
DieterGraef	0:d26c1b55cfca	486	*/
DieterGraef	0:d26c1b55cfca	487	static void
DieterGraef	0:d26c1b55cfca	488	lcp_protrej(int unit)
DieterGraef	0:d26c1b55cfca	489	{
DieterGraef	0:d26c1b55cfca	490	LWIP_UNUSED_ARG(unit);
DieterGraef	0:d26c1b55cfca	491	/*
DieterGraef	0:d26c1b55cfca	492	* Can't reject LCP!
DieterGraef	0:d26c1b55cfca	493	*/
DieterGraef	0:d26c1b55cfca	494	LCPDEBUG(LOG_WARNING, ("lcp_protrej: Received Protocol-Reject for LCP!\n"));
DieterGraef	0:d26c1b55cfca	495	fsm_protreject(&lcp_fsm[unit]);
DieterGraef	0:d26c1b55cfca	496	}
DieterGraef	0:d26c1b55cfca	497
DieterGraef	0:d26c1b55cfca	498
DieterGraef	0:d26c1b55cfca	499	/*
DieterGraef	0:d26c1b55cfca	500	* lcp_sprotrej - Send a Protocol-Reject for some protocol.
DieterGraef	0:d26c1b55cfca	501	*/
DieterGraef	0:d26c1b55cfca	502	void
DieterGraef	0:d26c1b55cfca	503	lcp_sprotrej(int unit, u_char *p, int len)
DieterGraef	0:d26c1b55cfca	504	{
DieterGraef	0:d26c1b55cfca	505	/*
DieterGraef	0:d26c1b55cfca	506	* Send back the protocol and the information field of the
DieterGraef	0:d26c1b55cfca	507	* rejected packet. We only get here if LCP is in the LS_OPENED state.
DieterGraef	0:d26c1b55cfca	508	*/
DieterGraef	0:d26c1b55cfca	509
DieterGraef	0:d26c1b55cfca	510	fsm_sdata(&lcp_fsm[unit], PROTREJ, ++lcp_fsm[unit].id, p, len);
DieterGraef	0:d26c1b55cfca	511	}
DieterGraef	0:d26c1b55cfca	512
DieterGraef	0:d26c1b55cfca	513
DieterGraef	0:d26c1b55cfca	514	/*
DieterGraef	0:d26c1b55cfca	515	* lcp_resetci - Reset our CI.
DieterGraef	0:d26c1b55cfca	516	*/
DieterGraef	0:d26c1b55cfca	517	static void
DieterGraef	0:d26c1b55cfca	518	lcp_resetci(fsm *f)
DieterGraef	0:d26c1b55cfca	519	{
DieterGraef	0:d26c1b55cfca	520	lcp_wantoptions[f->unit].magicnumber = magic();
DieterGraef	0:d26c1b55cfca	521	lcp_wantoptions[f->unit].numloops = 0;
DieterGraef	0:d26c1b55cfca	522	lcp_gotoptions[f->unit] = lcp_wantoptions[f->unit];
DieterGraef	0:d26c1b55cfca	523	peer_mru[f->unit] = PPP_MRU;
DieterGraef	0:d26c1b55cfca	524	auth_reset(f->unit);
DieterGraef	0:d26c1b55cfca	525	}
DieterGraef	0:d26c1b55cfca	526
DieterGraef	0:d26c1b55cfca	527
DieterGraef	0:d26c1b55cfca	528	/*
DieterGraef	0:d26c1b55cfca	529	* lcp_cilen - Return length of our CI.
DieterGraef	0:d26c1b55cfca	530	*/
DieterGraef	0:d26c1b55cfca	531	static int
DieterGraef	0:d26c1b55cfca	532	lcp_cilen(fsm *f)
DieterGraef	0:d26c1b55cfca	533	{
DieterGraef	0:d26c1b55cfca	534	lcp_options *go = &lcp_gotoptions[f->unit];
DieterGraef	0:d26c1b55cfca	535
DieterGraef	0:d26c1b55cfca	536	#define LENCIVOID(neg) ((neg) ? CILEN_VOID : 0)
DieterGraef	0:d26c1b55cfca	537	#define LENCICHAP(neg) ((neg) ? CILEN_CHAP : 0)
DieterGraef	0:d26c1b55cfca	538	#define LENCISHORT(neg) ((neg) ? CILEN_SHORT : 0)
DieterGraef	0:d26c1b55cfca	539	#define LENCILONG(neg) ((neg) ? CILEN_LONG : 0)
DieterGraef	0:d26c1b55cfca	540	#define LENCILQR(neg) ((neg) ? CILEN_LQR: 0)
DieterGraef	0:d26c1b55cfca	541	#define LENCICBCP(neg) ((neg) ? CILEN_CBCP: 0)
DieterGraef	0:d26c1b55cfca	542	/*
DieterGraef	0:d26c1b55cfca	543	* NB: we only ask for one of CHAP and UPAP, even if we will
DieterGraef	0:d26c1b55cfca	544	* accept either.
DieterGraef	0:d26c1b55cfca	545	*/
DieterGraef	0:d26c1b55cfca	546	return (LENCISHORT(go->neg_mru && go->mru != PPP_DEFMRU) +
DieterGraef	0:d26c1b55cfca	547	LENCILONG(go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) +
DieterGraef	0:d26c1b55cfca	548	LENCICHAP(go->neg_chap) +
DieterGraef	0:d26c1b55cfca	549	LENCISHORT(!go->neg_chap && go->neg_upap) +
DieterGraef	0:d26c1b55cfca	550	LENCILQR(go->neg_lqr) +
DieterGraef	0:d26c1b55cfca	551	LENCICBCP(go->neg_cbcp) +
DieterGraef	0:d26c1b55cfca	552	LENCILONG(go->neg_magicnumber) +
DieterGraef	0:d26c1b55cfca	553	LENCIVOID(go->neg_pcompression) +
DieterGraef	0:d26c1b55cfca	554	LENCIVOID(go->neg_accompression));
DieterGraef	0:d26c1b55cfca	555	}
DieterGraef	0:d26c1b55cfca	556
DieterGraef	0:d26c1b55cfca	557
DieterGraef	0:d26c1b55cfca	558	/*
DieterGraef	0:d26c1b55cfca	559	* lcp_addci - Add our desired CIs to a packet.
DieterGraef	0:d26c1b55cfca	560	*/
DieterGraef	0:d26c1b55cfca	561	static void
DieterGraef	0:d26c1b55cfca	562	lcp_addci(fsm f, u_char ucp, int *lenp)
DieterGraef	0:d26c1b55cfca	563	{
DieterGraef	0:d26c1b55cfca	564	lcp_options *go = &lcp_gotoptions[f->unit];
DieterGraef	0:d26c1b55cfca	565	u_char *start_ucp = ucp;
DieterGraef	0:d26c1b55cfca	566
DieterGraef	0:d26c1b55cfca	567	#define ADDCIVOID(opt, neg) \
DieterGraef	0:d26c1b55cfca	568	if (neg) { \
DieterGraef	0:d26c1b55cfca	569	LCPDEBUG(LOG_INFO, ("lcp_addci: opt=%d\n", opt)); \
DieterGraef	0:d26c1b55cfca	570	PUTCHAR(opt, ucp); \
DieterGraef	0:d26c1b55cfca	571	PUTCHAR(CILEN_VOID, ucp); \
DieterGraef	0:d26c1b55cfca	572	}
DieterGraef	0:d26c1b55cfca	573	#define ADDCISHORT(opt, neg, val) \
DieterGraef	0:d26c1b55cfca	574	if (neg) { \
DieterGraef	0:d26c1b55cfca	575	LCPDEBUG(LOG_INFO, ("lcp_addci: INT opt=%d %X\n", opt, val)); \
DieterGraef	0:d26c1b55cfca	576	PUTCHAR(opt, ucp); \
DieterGraef	0:d26c1b55cfca	577	PUTCHAR(CILEN_SHORT, ucp); \
DieterGraef	0:d26c1b55cfca	578	PUTSHORT(val, ucp); \
DieterGraef	0:d26c1b55cfca	579	}
DieterGraef	0:d26c1b55cfca	580	#define ADDCICHAP(opt, neg, val, digest) \
DieterGraef	0:d26c1b55cfca	581	if (neg) { \
DieterGraef	0:d26c1b55cfca	582	LCPDEBUG(LOG_INFO, ("lcp_addci: CHAP opt=%d %X\n", opt, val)); \
DieterGraef	0:d26c1b55cfca	583	PUTCHAR(opt, ucp); \
DieterGraef	0:d26c1b55cfca	584	PUTCHAR(CILEN_CHAP, ucp); \
DieterGraef	0:d26c1b55cfca	585	PUTSHORT(val, ucp); \
DieterGraef	0:d26c1b55cfca	586	PUTCHAR(digest, ucp); \
DieterGraef	0:d26c1b55cfca	587	}
DieterGraef	0:d26c1b55cfca	588	#define ADDCILONG(opt, neg, val) \
DieterGraef	0:d26c1b55cfca	589	if (neg) { \
DieterGraef	0:d26c1b55cfca	590	LCPDEBUG(LOG_INFO, ("lcp_addci: L opt=%d %lX\n", opt, val)); \
DieterGraef	0:d26c1b55cfca	591	PUTCHAR(opt, ucp); \
DieterGraef	0:d26c1b55cfca	592	PUTCHAR(CILEN_LONG, ucp); \
DieterGraef	0:d26c1b55cfca	593	PUTLONG(val, ucp); \
DieterGraef	0:d26c1b55cfca	594	}
DieterGraef	0:d26c1b55cfca	595	#define ADDCILQR(opt, neg, val) \
DieterGraef	0:d26c1b55cfca	596	if (neg) { \
DieterGraef	0:d26c1b55cfca	597	LCPDEBUG(LOG_INFO, ("lcp_addci: LQR opt=%d %lX\n", opt, val)); \
DieterGraef	0:d26c1b55cfca	598	PUTCHAR(opt, ucp); \
DieterGraef	0:d26c1b55cfca	599	PUTCHAR(CILEN_LQR, ucp); \
DieterGraef	0:d26c1b55cfca	600	PUTSHORT(PPP_LQR, ucp); \
DieterGraef	0:d26c1b55cfca	601	PUTLONG(val, ucp); \
DieterGraef	0:d26c1b55cfca	602	}
DieterGraef	0:d26c1b55cfca	603	#define ADDCICHAR(opt, neg, val) \
DieterGraef	0:d26c1b55cfca	604	if (neg) { \
DieterGraef	0:d26c1b55cfca	605	LCPDEBUG(LOG_INFO, ("lcp_addci: CHAR opt=%d %X '%z'\n", opt, val, val)); \
DieterGraef	0:d26c1b55cfca	606	PUTCHAR(opt, ucp); \
DieterGraef	0:d26c1b55cfca	607	PUTCHAR(CILEN_CHAR, ucp); \
DieterGraef	0:d26c1b55cfca	608	PUTCHAR(val, ucp); \
DieterGraef	0:d26c1b55cfca	609	}
DieterGraef	0:d26c1b55cfca	610
DieterGraef	0:d26c1b55cfca	611	ADDCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru);
DieterGraef	0:d26c1b55cfca	612	ADDCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap);
DieterGraef	0:d26c1b55cfca	613	ADDCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype);
DieterGraef	0:d26c1b55cfca	614	ADDCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP);
DieterGraef	0:d26c1b55cfca	615	ADDCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period);
DieterGraef	0:d26c1b55cfca	616	ADDCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT);
DieterGraef	0:d26c1b55cfca	617	ADDCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber);
DieterGraef	0:d26c1b55cfca	618	ADDCIVOID(CI_PCOMPRESSION, go->neg_pcompression);
DieterGraef	0:d26c1b55cfca	619	ADDCIVOID(CI_ACCOMPRESSION, go->neg_accompression);
DieterGraef	0:d26c1b55cfca	620
DieterGraef	0:d26c1b55cfca	621	if (ucp - start_ucp != *lenp) {
DieterGraef	0:d26c1b55cfca	622	/* this should never happen, because peer_mtu should be 1500 */
DieterGraef	0:d26c1b55cfca	623	LCPDEBUG(LOG_ERR, ("Bug in lcp_addci: wrong length\n"));
DieterGraef	0:d26c1b55cfca	624	}
DieterGraef	0:d26c1b55cfca	625	}
DieterGraef	0:d26c1b55cfca	626
DieterGraef	0:d26c1b55cfca	627
DieterGraef	0:d26c1b55cfca	628	/*
DieterGraef	0:d26c1b55cfca	629	* lcp_ackci - Ack our CIs.
DieterGraef	0:d26c1b55cfca	630	* This should not modify any state if the Ack is bad.
DieterGraef	0:d26c1b55cfca	631	*
DieterGraef	0:d26c1b55cfca	632	* Returns:
DieterGraef	0:d26c1b55cfca	633	* 0 - Ack was bad.
DieterGraef	0:d26c1b55cfca	634	* 1 - Ack was good.
DieterGraef	0:d26c1b55cfca	635	*/
DieterGraef	0:d26c1b55cfca	636	static int
DieterGraef	0:d26c1b55cfca	637	lcp_ackci(fsm f, u_char p, int len)
DieterGraef	0:d26c1b55cfca	638	{
DieterGraef	0:d26c1b55cfca	639	lcp_options *go = &lcp_gotoptions[f->unit];
DieterGraef	0:d26c1b55cfca	640	u_char cilen, citype, cichar;
DieterGraef	0:d26c1b55cfca	641	u_short cishort;
DieterGraef	0:d26c1b55cfca	642	u32_t cilong;
DieterGraef	0:d26c1b55cfca	643
DieterGraef	0:d26c1b55cfca	644	/*
DieterGraef	0:d26c1b55cfca	645	* CIs must be in exactly the same order that we sent.
DieterGraef	0:d26c1b55cfca	646	* Check packet length and CI length at each step.
DieterGraef	0:d26c1b55cfca	647	* If we find any deviations, then this packet is bad.
DieterGraef	0:d26c1b55cfca	648	*/
DieterGraef	0:d26c1b55cfca	649	#define ACKCIVOID(opt, neg) \
DieterGraef	0:d26c1b55cfca	650	if (neg) { \
DieterGraef	0:d26c1b55cfca	651	if ((len -= CILEN_VOID) < 0) \
DieterGraef	0:d26c1b55cfca	652	goto bad; \
DieterGraef	0:d26c1b55cfca	653	GETCHAR(citype, p); \
DieterGraef	0:d26c1b55cfca	654	GETCHAR(cilen, p); \
DieterGraef	0:d26c1b55cfca	655	if (cilen != CILEN_VOID \|\| citype != opt) \
DieterGraef	0:d26c1b55cfca	656	goto bad; \
DieterGraef	0:d26c1b55cfca	657	}
DieterGraef	0:d26c1b55cfca	658	#define ACKCISHORT(opt, neg, val) \
DieterGraef	0:d26c1b55cfca	659	if (neg) { \
DieterGraef	0:d26c1b55cfca	660	if ((len -= CILEN_SHORT) < 0) \
DieterGraef	0:d26c1b55cfca	661	goto bad; \
DieterGraef	0:d26c1b55cfca	662	GETCHAR(citype, p); \
DieterGraef	0:d26c1b55cfca	663	GETCHAR(cilen, p); \
DieterGraef	0:d26c1b55cfca	664	if (cilen != CILEN_SHORT \|\| citype != opt) \
DieterGraef	0:d26c1b55cfca	665	goto bad; \
DieterGraef	0:d26c1b55cfca	666	GETSHORT(cishort, p); \
DieterGraef	0:d26c1b55cfca	667	if (cishort != val) \
DieterGraef	0:d26c1b55cfca	668	goto bad; \
DieterGraef	0:d26c1b55cfca	669	}
DieterGraef	0:d26c1b55cfca	670	#define ACKCICHAR(opt, neg, val) \
DieterGraef	0:d26c1b55cfca	671	if (neg) { \
DieterGraef	0:d26c1b55cfca	672	if ((len -= CILEN_CHAR) < 0) \
DieterGraef	0:d26c1b55cfca	673	goto bad; \
DieterGraef	0:d26c1b55cfca	674	GETCHAR(citype, p); \
DieterGraef	0:d26c1b55cfca	675	GETCHAR(cilen, p); \
DieterGraef	0:d26c1b55cfca	676	if (cilen != CILEN_CHAR \|\| citype != opt) \
DieterGraef	0:d26c1b55cfca	677	goto bad; \
DieterGraef	0:d26c1b55cfca	678	GETCHAR(cichar, p); \
DieterGraef	0:d26c1b55cfca	679	if (cichar != val) \
DieterGraef	0:d26c1b55cfca	680	goto bad; \
DieterGraef	0:d26c1b55cfca	681	}
DieterGraef	0:d26c1b55cfca	682	#define ACKCICHAP(opt, neg, val, digest) \
DieterGraef	0:d26c1b55cfca	683	if (neg) { \
DieterGraef	0:d26c1b55cfca	684	if ((len -= CILEN_CHAP) < 0) \
DieterGraef	0:d26c1b55cfca	685	goto bad; \
DieterGraef	0:d26c1b55cfca	686	GETCHAR(citype, p); \
DieterGraef	0:d26c1b55cfca	687	GETCHAR(cilen, p); \
DieterGraef	0:d26c1b55cfca	688	if (cilen != CILEN_CHAP \|\| citype != opt) \
DieterGraef	0:d26c1b55cfca	689	goto bad; \
DieterGraef	0:d26c1b55cfca	690	GETSHORT(cishort, p); \
DieterGraef	0:d26c1b55cfca	691	if (cishort != val) \
DieterGraef	0:d26c1b55cfca	692	goto bad; \
DieterGraef	0:d26c1b55cfca	693	GETCHAR(cichar, p); \
DieterGraef	0:d26c1b55cfca	694	if (cichar != digest) \
DieterGraef	0:d26c1b55cfca	695	goto bad; \
DieterGraef	0:d26c1b55cfca	696	}
DieterGraef	0:d26c1b55cfca	697	#define ACKCILONG(opt, neg, val) \
DieterGraef	0:d26c1b55cfca	698	if (neg) { \
DieterGraef	0:d26c1b55cfca	699	if ((len -= CILEN_LONG) < 0) \
DieterGraef	0:d26c1b55cfca	700	goto bad; \
DieterGraef	0:d26c1b55cfca	701	GETCHAR(citype, p); \
DieterGraef	0:d26c1b55cfca	702	GETCHAR(cilen, p); \
DieterGraef	0:d26c1b55cfca	703	if (cilen != CILEN_LONG \|\| citype != opt) \
DieterGraef	0:d26c1b55cfca	704	goto bad; \
DieterGraef	0:d26c1b55cfca	705	GETLONG(cilong, p); \
DieterGraef	0:d26c1b55cfca	706	if (cilong != val) \
DieterGraef	0:d26c1b55cfca	707	goto bad; \
DieterGraef	0:d26c1b55cfca	708	}
DieterGraef	0:d26c1b55cfca	709	#define ACKCILQR(opt, neg, val) \
DieterGraef	0:d26c1b55cfca	710	if (neg) { \
DieterGraef	0:d26c1b55cfca	711	if ((len -= CILEN_LQR) < 0) \
DieterGraef	0:d26c1b55cfca	712	goto bad; \
DieterGraef	0:d26c1b55cfca	713	GETCHAR(citype, p); \
DieterGraef	0:d26c1b55cfca	714	GETCHAR(cilen, p); \
DieterGraef	0:d26c1b55cfca	715	if (cilen != CILEN_LQR \|\| citype != opt) \
DieterGraef	0:d26c1b55cfca	716	goto bad; \
DieterGraef	0:d26c1b55cfca	717	GETSHORT(cishort, p); \
DieterGraef	0:d26c1b55cfca	718	if (cishort != PPP_LQR) \
DieterGraef	0:d26c1b55cfca	719	goto bad; \
DieterGraef	0:d26c1b55cfca	720	GETLONG(cilong, p); \
DieterGraef	0:d26c1b55cfca	721	if (cilong != val) \
DieterGraef	0:d26c1b55cfca	722	goto bad; \
DieterGraef	0:d26c1b55cfca	723	}
DieterGraef	0:d26c1b55cfca	724
DieterGraef	0:d26c1b55cfca	725	ACKCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru);
DieterGraef	0:d26c1b55cfca	726	ACKCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap);
DieterGraef	0:d26c1b55cfca	727	ACKCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype);
DieterGraef	0:d26c1b55cfca	728	ACKCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP);
DieterGraef	0:d26c1b55cfca	729	ACKCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period);
DieterGraef	0:d26c1b55cfca	730	ACKCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT);
DieterGraef	0:d26c1b55cfca	731	ACKCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber);
DieterGraef	0:d26c1b55cfca	732	ACKCIVOID(CI_PCOMPRESSION, go->neg_pcompression);
DieterGraef	0:d26c1b55cfca	733	ACKCIVOID(CI_ACCOMPRESSION, go->neg_accompression);
DieterGraef	0:d26c1b55cfca	734
DieterGraef	0:d26c1b55cfca	735	/*
DieterGraef	0:d26c1b55cfca	736	* If there are any remaining CIs, then this packet is bad.
DieterGraef	0:d26c1b55cfca	737	*/
DieterGraef	0:d26c1b55cfca	738	if (len != 0) {
DieterGraef	0:d26c1b55cfca	739	goto bad;
DieterGraef	0:d26c1b55cfca	740	}
DieterGraef	0:d26c1b55cfca	741	LCPDEBUG(LOG_INFO, ("lcp_acki: Ack\n"));
DieterGraef	0:d26c1b55cfca	742	return (1);
DieterGraef	0:d26c1b55cfca	743	bad:
DieterGraef	0:d26c1b55cfca	744	LCPDEBUG(LOG_WARNING, ("lcp_acki: received bad Ack!\n"));
DieterGraef	0:d26c1b55cfca	745	return (0);
DieterGraef	0:d26c1b55cfca	746	}
DieterGraef	0:d26c1b55cfca	747
DieterGraef	0:d26c1b55cfca	748
DieterGraef	0:d26c1b55cfca	749	/*
DieterGraef	0:d26c1b55cfca	750	* lcp_nakci - Peer has sent a NAK for some of our CIs.
DieterGraef	0:d26c1b55cfca	751	* This should not modify any state if the Nak is bad
DieterGraef	0:d26c1b55cfca	752	* or if LCP is in the LS_OPENED state.
DieterGraef	0:d26c1b55cfca	753	*
DieterGraef	0:d26c1b55cfca	754	* Returns:
DieterGraef	0:d26c1b55cfca	755	* 0 - Nak was bad.
DieterGraef	0:d26c1b55cfca	756	* 1 - Nak was good.
DieterGraef	0:d26c1b55cfca	757	*/
DieterGraef	0:d26c1b55cfca	758	static int
DieterGraef	0:d26c1b55cfca	759	lcp_nakci(fsm f, u_char p, int len)
DieterGraef	0:d26c1b55cfca	760	{
DieterGraef	0:d26c1b55cfca	761	lcp_options *go = &lcp_gotoptions[f->unit];
DieterGraef	0:d26c1b55cfca	762	lcp_options *wo = &lcp_wantoptions[f->unit];
DieterGraef	0:d26c1b55cfca	763	u_char citype, cichar, *next;
DieterGraef	0:d26c1b55cfca	764	u_short cishort;
DieterGraef	0:d26c1b55cfca	765	u32_t cilong;
DieterGraef	0:d26c1b55cfca	766	lcp_options no; /* options we've seen Naks for */
DieterGraef	0:d26c1b55cfca	767	lcp_options try; /* options to request next time */
DieterGraef	0:d26c1b55cfca	768	int looped_back = 0;
DieterGraef	0:d26c1b55cfca	769	int cilen;
DieterGraef	0:d26c1b55cfca	770
DieterGraef	0:d26c1b55cfca	771	BZERO(&no, sizeof(no));
DieterGraef	0:d26c1b55cfca	772	try = *go;
DieterGraef	0:d26c1b55cfca	773
DieterGraef	0:d26c1b55cfca	774	/*
DieterGraef	0:d26c1b55cfca	775	* Any Nak'd CIs must be in exactly the same order that we sent.
DieterGraef	0:d26c1b55cfca	776	* Check packet length and CI length at each step.
DieterGraef	0:d26c1b55cfca	777	* If we find any deviations, then this packet is bad.
DieterGraef	0:d26c1b55cfca	778	*/
DieterGraef	0:d26c1b55cfca	779	#define NAKCIVOID(opt, neg, code) \
DieterGraef	0:d26c1b55cfca	780	if (go->neg && \
DieterGraef	0:d26c1b55cfca	781	len >= CILEN_VOID && \
DieterGraef	0:d26c1b55cfca	782	p[1] == CILEN_VOID && \
DieterGraef	0:d26c1b55cfca	783	p[0] == opt) { \
DieterGraef	0:d26c1b55cfca	784	len -= CILEN_VOID; \
DieterGraef	0:d26c1b55cfca	785	INCPTR(CILEN_VOID, p); \
DieterGraef	0:d26c1b55cfca	786	no.neg = 1; \
DieterGraef	0:d26c1b55cfca	787	code \
DieterGraef	0:d26c1b55cfca	788	}
DieterGraef	0:d26c1b55cfca	789	#define NAKCICHAP(opt, neg, code) \
DieterGraef	0:d26c1b55cfca	790	if (go->neg && \
DieterGraef	0:d26c1b55cfca	791	len >= CILEN_CHAP && \
DieterGraef	0:d26c1b55cfca	792	p[1] == CILEN_CHAP && \
DieterGraef	0:d26c1b55cfca	793	p[0] == opt) { \
DieterGraef	0:d26c1b55cfca	794	len -= CILEN_CHAP; \
DieterGraef	0:d26c1b55cfca	795	INCPTR(2, p); \
DieterGraef	0:d26c1b55cfca	796	GETSHORT(cishort, p); \
DieterGraef	0:d26c1b55cfca	797	GETCHAR(cichar, p); \
DieterGraef	0:d26c1b55cfca	798	no.neg = 1; \
DieterGraef	0:d26c1b55cfca	799	code \
DieterGraef	0:d26c1b55cfca	800	}
DieterGraef	0:d26c1b55cfca	801	#define NAKCICHAR(opt, neg, code) \
DieterGraef	0:d26c1b55cfca	802	if (go->neg && \
DieterGraef	0:d26c1b55cfca	803	len >= CILEN_CHAR && \
DieterGraef	0:d26c1b55cfca	804	p[1] == CILEN_CHAR && \
DieterGraef	0:d26c1b55cfca	805	p[0] == opt) { \
DieterGraef	0:d26c1b55cfca	806	len -= CILEN_CHAR; \
DieterGraef	0:d26c1b55cfca	807	INCPTR(2, p); \
DieterGraef	0:d26c1b55cfca	808	GETCHAR(cichar, p); \
DieterGraef	0:d26c1b55cfca	809	no.neg = 1; \
DieterGraef	0:d26c1b55cfca	810	code \
DieterGraef	0:d26c1b55cfca	811	}
DieterGraef	0:d26c1b55cfca	812	#define NAKCISHORT(opt, neg, code) \
DieterGraef	0:d26c1b55cfca	813	if (go->neg && \
DieterGraef	0:d26c1b55cfca	814	len >= CILEN_SHORT && \
DieterGraef	0:d26c1b55cfca	815	p[1] == CILEN_SHORT && \
DieterGraef	0:d26c1b55cfca	816	p[0] == opt) { \
DieterGraef	0:d26c1b55cfca	817	len -= CILEN_SHORT; \
DieterGraef	0:d26c1b55cfca	818	INCPTR(2, p); \
DieterGraef	0:d26c1b55cfca	819	GETSHORT(cishort, p); \
DieterGraef	0:d26c1b55cfca	820	no.neg = 1; \
DieterGraef	0:d26c1b55cfca	821	code \
DieterGraef	0:d26c1b55cfca	822	}
DieterGraef	0:d26c1b55cfca	823	#define NAKCILONG(opt, neg, code) \
DieterGraef	0:d26c1b55cfca	824	if (go->neg && \
DieterGraef	0:d26c1b55cfca	825	len >= CILEN_LONG && \
DieterGraef	0:d26c1b55cfca	826	p[1] == CILEN_LONG && \
DieterGraef	0:d26c1b55cfca	827	p[0] == opt) { \
DieterGraef	0:d26c1b55cfca	828	len -= CILEN_LONG; \
DieterGraef	0:d26c1b55cfca	829	INCPTR(2, p); \
DieterGraef	0:d26c1b55cfca	830	GETLONG(cilong, p); \
DieterGraef	0:d26c1b55cfca	831	no.neg = 1; \
DieterGraef	0:d26c1b55cfca	832	code \
DieterGraef	0:d26c1b55cfca	833	}
DieterGraef	0:d26c1b55cfca	834	#define NAKCILQR(opt, neg, code) \
DieterGraef	0:d26c1b55cfca	835	if (go->neg && \
DieterGraef	0:d26c1b55cfca	836	len >= CILEN_LQR && \
DieterGraef	0:d26c1b55cfca	837	p[1] == CILEN_LQR && \
DieterGraef	0:d26c1b55cfca	838	p[0] == opt) { \
DieterGraef	0:d26c1b55cfca	839	len -= CILEN_LQR; \
DieterGraef	0:d26c1b55cfca	840	INCPTR(2, p); \
DieterGraef	0:d26c1b55cfca	841	GETSHORT(cishort, p); \
DieterGraef	0:d26c1b55cfca	842	GETLONG(cilong, p); \
DieterGraef	0:d26c1b55cfca	843	no.neg = 1; \
DieterGraef	0:d26c1b55cfca	844	code \
DieterGraef	0:d26c1b55cfca	845	}
DieterGraef	0:d26c1b55cfca	846
DieterGraef	0:d26c1b55cfca	847	/*
DieterGraef	0:d26c1b55cfca	848	* We don't care if they want to send us smaller packets than
DieterGraef	0:d26c1b55cfca	849	* we want. Therefore, accept any MRU less than what we asked for,
DieterGraef	0:d26c1b55cfca	850	* but then ignore the new value when setting the MRU in the kernel.
DieterGraef	0:d26c1b55cfca	851	* If they send us a bigger MRU than what we asked, accept it, up to
DieterGraef	0:d26c1b55cfca	852	* the limit of the default MRU we'd get if we didn't negotiate.
DieterGraef	0:d26c1b55cfca	853	*/
DieterGraef	0:d26c1b55cfca	854	if (go->neg_mru && go->mru != PPP_DEFMRU) {
DieterGraef	0:d26c1b55cfca	855	NAKCISHORT(CI_MRU, neg_mru,
DieterGraef	0:d26c1b55cfca	856	if (cishort <= wo->mru \|\| cishort < PPP_DEFMRU) {
DieterGraef	0:d26c1b55cfca	857	try.mru = cishort;
DieterGraef	0:d26c1b55cfca	858	}
DieterGraef	0:d26c1b55cfca	859	);
DieterGraef	0:d26c1b55cfca	860	}
DieterGraef	0:d26c1b55cfca	861
DieterGraef	0:d26c1b55cfca	862	/*
DieterGraef	0:d26c1b55cfca	863	* Add any characters they want to our (receive-side) asyncmap.
DieterGraef	0:d26c1b55cfca	864	*/
DieterGraef	0:d26c1b55cfca	865	if (go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) {
DieterGraef	0:d26c1b55cfca	866	NAKCILONG(CI_ASYNCMAP, neg_asyncmap,
DieterGraef	0:d26c1b55cfca	867	try.asyncmap = go->asyncmap \| cilong;
DieterGraef	0:d26c1b55cfca	868	);
DieterGraef	0:d26c1b55cfca	869	}
DieterGraef	0:d26c1b55cfca	870
DieterGraef	0:d26c1b55cfca	871	/*
DieterGraef	0:d26c1b55cfca	872	* If they've nak'd our authentication-protocol, check whether
DieterGraef	0:d26c1b55cfca	873	* they are proposing a different protocol, or a different
DieterGraef	0:d26c1b55cfca	874	* hash algorithm for CHAP.
DieterGraef	0:d26c1b55cfca	875	*/
DieterGraef	0:d26c1b55cfca	876	if ((go->neg_chap \|\| go->neg_upap)
DieterGraef	0:d26c1b55cfca	877	&& len >= CILEN_SHORT
DieterGraef	0:d26c1b55cfca	878	&& p[0] == CI_AUTHTYPE && p[1] >= CILEN_SHORT && p[1] <= len) {
DieterGraef	0:d26c1b55cfca	879	cilen = p[1];
DieterGraef	0:d26c1b55cfca	880	len -= cilen;
DieterGraef	0:d26c1b55cfca	881	no.neg_chap = go->neg_chap;
DieterGraef	0:d26c1b55cfca	882	no.neg_upap = go->neg_upap;
DieterGraef	0:d26c1b55cfca	883	INCPTR(2, p);
DieterGraef	0:d26c1b55cfca	884	GETSHORT(cishort, p);
DieterGraef	0:d26c1b55cfca	885	if (cishort == PPP_PAP && cilen == CILEN_SHORT) {
DieterGraef	0:d26c1b55cfca	886	/*
DieterGraef	0:d26c1b55cfca	887	* If we were asking for CHAP, they obviously don't want to do it.
DieterGraef	0:d26c1b55cfca	888	* If we weren't asking for CHAP, then we were asking for PAP,
DieterGraef	0:d26c1b55cfca	889	* in which case this Nak is bad.
DieterGraef	0:d26c1b55cfca	890	*/
DieterGraef	0:d26c1b55cfca	891	if (!go->neg_chap) {
DieterGraef	0:d26c1b55cfca	892	goto bad;
DieterGraef	0:d26c1b55cfca	893	}
DieterGraef	0:d26c1b55cfca	894	try.neg_chap = 0;
DieterGraef	0:d26c1b55cfca	895
DieterGraef	0:d26c1b55cfca	896	} else if (cishort == PPP_CHAP && cilen == CILEN_CHAP) {
DieterGraef	0:d26c1b55cfca	897	GETCHAR(cichar, p);
DieterGraef	0:d26c1b55cfca	898	if (go->neg_chap) {
DieterGraef	0:d26c1b55cfca	899	/*
DieterGraef	0:d26c1b55cfca	900	* We were asking for CHAP/MD5; they must want a different
DieterGraef	0:d26c1b55cfca	901	* algorithm. If they can't do MD5, we'll have to stop
DieterGraef	0:d26c1b55cfca	902	* asking for CHAP.
DieterGraef	0:d26c1b55cfca	903	*/
DieterGraef	0:d26c1b55cfca	904	if (cichar != go->chap_mdtype) {
DieterGraef	0:d26c1b55cfca	905	try.neg_chap = 0;
DieterGraef	0:d26c1b55cfca	906	}
DieterGraef	0:d26c1b55cfca	907	} else {
DieterGraef	0:d26c1b55cfca	908	/*
DieterGraef	0:d26c1b55cfca	909	* Stop asking for PAP if we were asking for it.
DieterGraef	0:d26c1b55cfca	910	*/
DieterGraef	0:d26c1b55cfca	911	try.neg_upap = 0;
DieterGraef	0:d26c1b55cfca	912	}
DieterGraef	0:d26c1b55cfca	913
DieterGraef	0:d26c1b55cfca	914	} else {
DieterGraef	0:d26c1b55cfca	915	/*
DieterGraef	0:d26c1b55cfca	916	* We don't recognize what they're suggesting.
DieterGraef	0:d26c1b55cfca	917	* Stop asking for what we were asking for.
DieterGraef	0:d26c1b55cfca	918	*/
DieterGraef	0:d26c1b55cfca	919	if (go->neg_chap) {
DieterGraef	0:d26c1b55cfca	920	try.neg_chap = 0;
DieterGraef	0:d26c1b55cfca	921	} else {
DieterGraef	0:d26c1b55cfca	922	try.neg_upap = 0;
DieterGraef	0:d26c1b55cfca	923	}
DieterGraef	0:d26c1b55cfca	924	p += cilen - CILEN_SHORT;
DieterGraef	0:d26c1b55cfca	925	}
DieterGraef	0:d26c1b55cfca	926	}
DieterGraef	0:d26c1b55cfca	927
DieterGraef	0:d26c1b55cfca	928	/*
DieterGraef	0:d26c1b55cfca	929	* If they can't cope with our link quality protocol, we'll have
DieterGraef	0:d26c1b55cfca	930	* to stop asking for LQR. We haven't got any other protocol.
DieterGraef	0:d26c1b55cfca	931	* If they Nak the reporting period, take their value XXX ?
DieterGraef	0:d26c1b55cfca	932	*/
DieterGraef	0:d26c1b55cfca	933	NAKCILQR(CI_QUALITY, neg_lqr,
DieterGraef	0:d26c1b55cfca	934	if (cishort != PPP_LQR) {
DieterGraef	0:d26c1b55cfca	935	try.neg_lqr = 0;
DieterGraef	0:d26c1b55cfca	936	} else {
DieterGraef	0:d26c1b55cfca	937	try.lqr_period = cilong;
DieterGraef	0:d26c1b55cfca	938	}
DieterGraef	0:d26c1b55cfca	939	);
DieterGraef	0:d26c1b55cfca	940
DieterGraef	0:d26c1b55cfca	941	/*
DieterGraef	0:d26c1b55cfca	942	* Only implementing CBCP...not the rest of the callback options
DieterGraef	0:d26c1b55cfca	943	*/
DieterGraef	0:d26c1b55cfca	944	NAKCICHAR(CI_CALLBACK, neg_cbcp,
DieterGraef	0:d26c1b55cfca	945	try.neg_cbcp = 0;
DieterGraef	0:d26c1b55cfca	946	);
DieterGraef	0:d26c1b55cfca	947
DieterGraef	0:d26c1b55cfca	948	/*
DieterGraef	0:d26c1b55cfca	949	* Check for a looped-back line.
DieterGraef	0:d26c1b55cfca	950	*/
DieterGraef	0:d26c1b55cfca	951	NAKCILONG(CI_MAGICNUMBER, neg_magicnumber,
DieterGraef	0:d26c1b55cfca	952	try.magicnumber = magic();
DieterGraef	0:d26c1b55cfca	953	looped_back = 1;
DieterGraef	0:d26c1b55cfca	954	);
DieterGraef	0:d26c1b55cfca	955
DieterGraef	0:d26c1b55cfca	956	/*
DieterGraef	0:d26c1b55cfca	957	* Peer shouldn't send Nak for protocol compression or
DieterGraef	0:d26c1b55cfca	958	* address/control compression requests; they should send
DieterGraef	0:d26c1b55cfca	959	* a Reject instead. If they send a Nak, treat it as a Reject.
DieterGraef	0:d26c1b55cfca	960	*/
DieterGraef	0:d26c1b55cfca	961	NAKCIVOID(CI_PCOMPRESSION, neg_pcompression,
DieterGraef	0:d26c1b55cfca	962	try.neg_pcompression = 0;
DieterGraef	0:d26c1b55cfca	963	);
DieterGraef	0:d26c1b55cfca	964	NAKCIVOID(CI_ACCOMPRESSION, neg_accompression,
DieterGraef	0:d26c1b55cfca	965	try.neg_accompression = 0;
DieterGraef	0:d26c1b55cfca	966	);
DieterGraef	0:d26c1b55cfca	967
DieterGraef	0:d26c1b55cfca	968	/*
DieterGraef	0:d26c1b55cfca	969	* There may be remaining CIs, if the peer is requesting negotiation
DieterGraef	0:d26c1b55cfca	970	* on an option that we didn't include in our request packet.
DieterGraef	0:d26c1b55cfca	971	* If we see an option that we requested, or one we've already seen
DieterGraef	0:d26c1b55cfca	972	* in this packet, then this packet is bad.
DieterGraef	0:d26c1b55cfca	973	* If we wanted to respond by starting to negotiate on the requested
DieterGraef	0:d26c1b55cfca	974	* option(s), we could, but we don't, because except for the
DieterGraef	0:d26c1b55cfca	975	* authentication type and quality protocol, if we are not negotiating
DieterGraef	0:d26c1b55cfca	976	* an option, it is because we were told not to.
DieterGraef	0:d26c1b55cfca	977	* For the authentication type, the Nak from the peer means
DieterGraef	0:d26c1b55cfca	978	* `let me authenticate myself with you' which is a bit pointless.
DieterGraef	0:d26c1b55cfca	979	* For the quality protocol, the Nak means `ask me to send you quality
DieterGraef	0:d26c1b55cfca	980	* reports', but if we didn't ask for them, we don't want them.
DieterGraef	0:d26c1b55cfca	981	* An option we don't recognize represents the peer asking to
DieterGraef	0:d26c1b55cfca	982	* negotiate some option we don't support, so ignore it.
DieterGraef	0:d26c1b55cfca	983	*/
DieterGraef	0:d26c1b55cfca	984	while (len > CILEN_VOID) {
DieterGraef	0:d26c1b55cfca	985	GETCHAR(citype, p);
DieterGraef	0:d26c1b55cfca	986	GETCHAR(cilen, p);
DieterGraef	0:d26c1b55cfca	987	if (cilen < CILEN_VOID \|\| (len -= cilen) < 0) {
DieterGraef	0:d26c1b55cfca	988	goto bad;
DieterGraef	0:d26c1b55cfca	989	}
DieterGraef	0:d26c1b55cfca	990	next = p + cilen - 2;
DieterGraef	0:d26c1b55cfca	991
DieterGraef	0:d26c1b55cfca	992	switch (citype) {
DieterGraef	0:d26c1b55cfca	993	case CI_MRU:
DieterGraef	0:d26c1b55cfca	994	if ((go->neg_mru && go->mru != PPP_DEFMRU)
DieterGraef	0:d26c1b55cfca	995	\|\| no.neg_mru \|\| cilen != CILEN_SHORT) {
DieterGraef	0:d26c1b55cfca	996	goto bad;
DieterGraef	0:d26c1b55cfca	997	}
DieterGraef	0:d26c1b55cfca	998	GETSHORT(cishort, p);
DieterGraef	0:d26c1b55cfca	999	if (cishort < PPP_DEFMRU) {
DieterGraef	0:d26c1b55cfca	1000	try.mru = cishort;
DieterGraef	0:d26c1b55cfca	1001	}
DieterGraef	0:d26c1b55cfca	1002	break;
DieterGraef	0:d26c1b55cfca	1003	case CI_ASYNCMAP:
DieterGraef	0:d26c1b55cfca	1004	if ((go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl)
DieterGraef	0:d26c1b55cfca	1005	\|\| no.neg_asyncmap \|\| cilen != CILEN_LONG) {
DieterGraef	0:d26c1b55cfca	1006	goto bad;
DieterGraef	0:d26c1b55cfca	1007	}
DieterGraef	0:d26c1b55cfca	1008	break;
DieterGraef	0:d26c1b55cfca	1009	case CI_AUTHTYPE:
DieterGraef	0:d26c1b55cfca	1010	if (go->neg_chap \|\| no.neg_chap \|\| go->neg_upap \|\| no.neg_upap) {
DieterGraef	0:d26c1b55cfca	1011	goto bad;
DieterGraef	0:d26c1b55cfca	1012	}
DieterGraef	0:d26c1b55cfca	1013	break;
DieterGraef	0:d26c1b55cfca	1014	case CI_MAGICNUMBER:
DieterGraef	0:d26c1b55cfca	1015	if (go->neg_magicnumber \|\| no.neg_magicnumber \|\|
DieterGraef	0:d26c1b55cfca	1016	cilen != CILEN_LONG) {
DieterGraef	0:d26c1b55cfca	1017	goto bad;
DieterGraef	0:d26c1b55cfca	1018	}
DieterGraef	0:d26c1b55cfca	1019	break;
DieterGraef	0:d26c1b55cfca	1020	case CI_PCOMPRESSION:
DieterGraef	0:d26c1b55cfca	1021	if (go->neg_pcompression \|\| no.neg_pcompression
DieterGraef	0:d26c1b55cfca	1022	\|\| cilen != CILEN_VOID) {
DieterGraef	0:d26c1b55cfca	1023	goto bad;
DieterGraef	0:d26c1b55cfca	1024	}
DieterGraef	0:d26c1b55cfca	1025	break;
DieterGraef	0:d26c1b55cfca	1026	case CI_ACCOMPRESSION:
DieterGraef	0:d26c1b55cfca	1027	if (go->neg_accompression \|\| no.neg_accompression
DieterGraef	0:d26c1b55cfca	1028	\|\| cilen != CILEN_VOID) {
DieterGraef	0:d26c1b55cfca	1029	goto bad;
DieterGraef	0:d26c1b55cfca	1030	}
DieterGraef	0:d26c1b55cfca	1031	break;
DieterGraef	0:d26c1b55cfca	1032	case CI_QUALITY:
DieterGraef	0:d26c1b55cfca	1033	if (go->neg_lqr \|\| no.neg_lqr \|\| cilen != CILEN_LQR) {
DieterGraef	0:d26c1b55cfca	1034	goto bad;
DieterGraef	0:d26c1b55cfca	1035	}
DieterGraef	0:d26c1b55cfca	1036	break;
DieterGraef	0:d26c1b55cfca	1037	}
DieterGraef	0:d26c1b55cfca	1038	p = next;
DieterGraef	0:d26c1b55cfca	1039	}
DieterGraef	0:d26c1b55cfca	1040
DieterGraef	0:d26c1b55cfca	1041	/* If there is still anything left, this packet is bad. */
DieterGraef	0:d26c1b55cfca	1042	if (len != 0) {
DieterGraef	0:d26c1b55cfca	1043	goto bad;
DieterGraef	0:d26c1b55cfca	1044	}
DieterGraef	0:d26c1b55cfca	1045
DieterGraef	0:d26c1b55cfca	1046	/*
DieterGraef	0:d26c1b55cfca	1047	* OK, the Nak is good. Now we can update state.
DieterGraef	0:d26c1b55cfca	1048	*/
DieterGraef	0:d26c1b55cfca	1049	if (f->state != LS_OPENED) {
DieterGraef	0:d26c1b55cfca	1050	if (looped_back) {
DieterGraef	0:d26c1b55cfca	1051	if (++try.numloops >= lcp_loopbackfail) {
DieterGraef	0:d26c1b55cfca	1052	LCPDEBUG(LOG_NOTICE, ("Serial line is looped back.\n"));
DieterGraef	0:d26c1b55cfca	1053	lcp_close(f->unit, "Loopback detected");
DieterGraef	0:d26c1b55cfca	1054	}
DieterGraef	0:d26c1b55cfca	1055	} else {
DieterGraef	0:d26c1b55cfca	1056	try.numloops = 0;
DieterGraef	0:d26c1b55cfca	1057	}
DieterGraef	0:d26c1b55cfca	1058	*go = try;
DieterGraef	0:d26c1b55cfca	1059	}
DieterGraef	0:d26c1b55cfca	1060
DieterGraef	0:d26c1b55cfca	1061	return 1;
DieterGraef	0:d26c1b55cfca	1062
DieterGraef	0:d26c1b55cfca	1063	bad:
DieterGraef	0:d26c1b55cfca	1064	LCPDEBUG(LOG_WARNING, ("lcp_nakci: received bad Nak!\n"));
DieterGraef	0:d26c1b55cfca	1065	return 0;
DieterGraef	0:d26c1b55cfca	1066	}
DieterGraef	0:d26c1b55cfca	1067
DieterGraef	0:d26c1b55cfca	1068
DieterGraef	0:d26c1b55cfca	1069	/*
DieterGraef	0:d26c1b55cfca	1070	* lcp_rejci - Peer has Rejected some of our CIs.
DieterGraef	0:d26c1b55cfca	1071	* This should not modify any state if the Reject is bad
DieterGraef	0:d26c1b55cfca	1072	* or if LCP is in the LS_OPENED state.
DieterGraef	0:d26c1b55cfca	1073	*
DieterGraef	0:d26c1b55cfca	1074	* Returns:
DieterGraef	0:d26c1b55cfca	1075	* 0 - Reject was bad.
DieterGraef	0:d26c1b55cfca	1076	* 1 - Reject was good.
DieterGraef	0:d26c1b55cfca	1077	*/
DieterGraef	0:d26c1b55cfca	1078	static int
DieterGraef	0:d26c1b55cfca	1079	lcp_rejci(fsm f, u_char p, int len)
DieterGraef	0:d26c1b55cfca	1080	{
DieterGraef	0:d26c1b55cfca	1081	lcp_options *go = &lcp_gotoptions[f->unit];
DieterGraef	0:d26c1b55cfca	1082	u_char cichar;
DieterGraef	0:d26c1b55cfca	1083	u_short cishort;
DieterGraef	0:d26c1b55cfca	1084	u32_t cilong;
DieterGraef	0:d26c1b55cfca	1085	lcp_options try; /* options to request next time */
DieterGraef	0:d26c1b55cfca	1086
DieterGraef	0:d26c1b55cfca	1087	try = *go;
DieterGraef	0:d26c1b55cfca	1088
DieterGraef	0:d26c1b55cfca	1089	/*
DieterGraef	0:d26c1b55cfca	1090	* Any Rejected CIs must be in exactly the same order that we sent.
DieterGraef	0:d26c1b55cfca	1091	* Check packet length and CI length at each step.
DieterGraef	0:d26c1b55cfca	1092	* If we find any deviations, then this packet is bad.
DieterGraef	0:d26c1b55cfca	1093	*/
DieterGraef	0:d26c1b55cfca	1094	#define REJCIVOID(opt, neg) \
DieterGraef	0:d26c1b55cfca	1095	if (go->neg && \
DieterGraef	0:d26c1b55cfca	1096	len >= CILEN_VOID && \
DieterGraef	0:d26c1b55cfca	1097	p[1] == CILEN_VOID && \
DieterGraef	0:d26c1b55cfca	1098	p[0] == opt) { \
DieterGraef	0:d26c1b55cfca	1099	len -= CILEN_VOID; \
DieterGraef	0:d26c1b55cfca	1100	INCPTR(CILEN_VOID, p); \
DieterGraef	0:d26c1b55cfca	1101	try.neg = 0; \
DieterGraef	0:d26c1b55cfca	1102	LCPDEBUG(LOG_INFO, ("lcp_rejci: void opt %d rejected\n", opt)); \
DieterGraef	0:d26c1b55cfca	1103	}
DieterGraef	0:d26c1b55cfca	1104	#define REJCISHORT(opt, neg, val) \
DieterGraef	0:d26c1b55cfca	1105	if (go->neg && \
DieterGraef	0:d26c1b55cfca	1106	len >= CILEN_SHORT && \
DieterGraef	0:d26c1b55cfca	1107	p[1] == CILEN_SHORT && \
DieterGraef	0:d26c1b55cfca	1108	p[0] == opt) { \
DieterGraef	0:d26c1b55cfca	1109	len -= CILEN_SHORT; \
DieterGraef	0:d26c1b55cfca	1110	INCPTR(2, p); \
DieterGraef	0:d26c1b55cfca	1111	GETSHORT(cishort, p); \
DieterGraef	0:d26c1b55cfca	1112	/* Check rejected value. */ \
DieterGraef	0:d26c1b55cfca	1113	if (cishort != val) { \
DieterGraef	0:d26c1b55cfca	1114	goto bad; \
DieterGraef	0:d26c1b55cfca	1115	} \
DieterGraef	0:d26c1b55cfca	1116	try.neg = 0; \
DieterGraef	0:d26c1b55cfca	1117	LCPDEBUG(LOG_INFO, ("lcp_rejci: short opt %d rejected\n", opt)); \
DieterGraef	0:d26c1b55cfca	1118	}
DieterGraef	0:d26c1b55cfca	1119	#define REJCICHAP(opt, neg, val, digest) \
DieterGraef	0:d26c1b55cfca	1120	if (go->neg && \
DieterGraef	0:d26c1b55cfca	1121	len >= CILEN_CHAP && \
DieterGraef	0:d26c1b55cfca	1122	p[1] == CILEN_CHAP && \
DieterGraef	0:d26c1b55cfca	1123	p[0] == opt) { \
DieterGraef	0:d26c1b55cfca	1124	len -= CILEN_CHAP; \
DieterGraef	0:d26c1b55cfca	1125	INCPTR(2, p); \
DieterGraef	0:d26c1b55cfca	1126	GETSHORT(cishort, p); \
DieterGraef	0:d26c1b55cfca	1127	GETCHAR(cichar, p); \
DieterGraef	0:d26c1b55cfca	1128	/* Check rejected value. */ \
DieterGraef	0:d26c1b55cfca	1129	if (cishort != val \|\| cichar != digest) { \
DieterGraef	0:d26c1b55cfca	1130	goto bad; \
DieterGraef	0:d26c1b55cfca	1131	} \
DieterGraef	0:d26c1b55cfca	1132	try.neg = 0; \
DieterGraef	0:d26c1b55cfca	1133	try.neg_upap = 0; \
DieterGraef	0:d26c1b55cfca	1134	LCPDEBUG(LOG_INFO, ("lcp_rejci: chap opt %d rejected\n", opt)); \
DieterGraef	0:d26c1b55cfca	1135	}
DieterGraef	0:d26c1b55cfca	1136	#define REJCILONG(opt, neg, val) \
DieterGraef	0:d26c1b55cfca	1137	if (go->neg && \
DieterGraef	0:d26c1b55cfca	1138	len >= CILEN_LONG && \
DieterGraef	0:d26c1b55cfca	1139	p[1] == CILEN_LONG && \
DieterGraef	0:d26c1b55cfca	1140	p[0] == opt) { \
DieterGraef	0:d26c1b55cfca	1141	len -= CILEN_LONG; \
DieterGraef	0:d26c1b55cfca	1142	INCPTR(2, p); \
DieterGraef	0:d26c1b55cfca	1143	GETLONG(cilong, p); \
DieterGraef	0:d26c1b55cfca	1144	/* Check rejected value. */ \
DieterGraef	0:d26c1b55cfca	1145	if (cilong != val) { \
DieterGraef	0:d26c1b55cfca	1146	goto bad; \
DieterGraef	0:d26c1b55cfca	1147	} \
DieterGraef	0:d26c1b55cfca	1148	try.neg = 0; \
DieterGraef	0:d26c1b55cfca	1149	LCPDEBUG(LOG_INFO, ("lcp_rejci: long opt %d rejected\n", opt)); \
DieterGraef	0:d26c1b55cfca	1150	}
DieterGraef	0:d26c1b55cfca	1151	#define REJCILQR(opt, neg, val) \
DieterGraef	0:d26c1b55cfca	1152	if (go->neg && \
DieterGraef	0:d26c1b55cfca	1153	len >= CILEN_LQR && \
DieterGraef	0:d26c1b55cfca	1154	p[1] == CILEN_LQR && \
DieterGraef	0:d26c1b55cfca	1155	p[0] == opt) { \
DieterGraef	0:d26c1b55cfca	1156	len -= CILEN_LQR; \
DieterGraef	0:d26c1b55cfca	1157	INCPTR(2, p); \
DieterGraef	0:d26c1b55cfca	1158	GETSHORT(cishort, p); \
DieterGraef	0:d26c1b55cfca	1159	GETLONG(cilong, p); \
DieterGraef	0:d26c1b55cfca	1160	/* Check rejected value. */ \
DieterGraef	0:d26c1b55cfca	1161	if (cishort != PPP_LQR \|\| cilong != val) { \
DieterGraef	0:d26c1b55cfca	1162	goto bad; \
DieterGraef	0:d26c1b55cfca	1163	} \
DieterGraef	0:d26c1b55cfca	1164	try.neg = 0; \
DieterGraef	0:d26c1b55cfca	1165	LCPDEBUG(LOG_INFO, ("lcp_rejci: LQR opt %d rejected\n", opt)); \
DieterGraef	0:d26c1b55cfca	1166	}
DieterGraef	0:d26c1b55cfca	1167	#define REJCICBCP(opt, neg, val) \
DieterGraef	0:d26c1b55cfca	1168	if (go->neg && \
DieterGraef	0:d26c1b55cfca	1169	len >= CILEN_CBCP && \
DieterGraef	0:d26c1b55cfca	1170	p[1] == CILEN_CBCP && \
DieterGraef	0:d26c1b55cfca	1171	p[0] == opt) { \
DieterGraef	0:d26c1b55cfca	1172	len -= CILEN_CBCP; \
DieterGraef	0:d26c1b55cfca	1173	INCPTR(2, p); \
DieterGraef	0:d26c1b55cfca	1174	GETCHAR(cichar, p); \
DieterGraef	0:d26c1b55cfca	1175	/* Check rejected value. */ \
DieterGraef	0:d26c1b55cfca	1176	if (cichar != val) { \
DieterGraef	0:d26c1b55cfca	1177	goto bad; \
DieterGraef	0:d26c1b55cfca	1178	} \
DieterGraef	0:d26c1b55cfca	1179	try.neg = 0; \
DieterGraef	0:d26c1b55cfca	1180	LCPDEBUG(LOG_INFO, ("lcp_rejci: Callback opt %d rejected\n", opt)); \
DieterGraef	0:d26c1b55cfca	1181	}
DieterGraef	0:d26c1b55cfca	1182
DieterGraef	0:d26c1b55cfca	1183	REJCISHORT(CI_MRU, neg_mru, go->mru);
DieterGraef	0:d26c1b55cfca	1184	REJCILONG(CI_ASYNCMAP, neg_asyncmap, go->asyncmap);
DieterGraef	0:d26c1b55cfca	1185	REJCICHAP(CI_AUTHTYPE, neg_chap, PPP_CHAP, go->chap_mdtype);
DieterGraef	0:d26c1b55cfca	1186	if (!go->neg_chap) {
DieterGraef	0:d26c1b55cfca	1187	REJCISHORT(CI_AUTHTYPE, neg_upap, PPP_PAP);
DieterGraef	0:d26c1b55cfca	1188	}
DieterGraef	0:d26c1b55cfca	1189	REJCILQR(CI_QUALITY, neg_lqr, go->lqr_period);
DieterGraef	0:d26c1b55cfca	1190	REJCICBCP(CI_CALLBACK, neg_cbcp, CBCP_OPT);
DieterGraef	0:d26c1b55cfca	1191	REJCILONG(CI_MAGICNUMBER, neg_magicnumber, go->magicnumber);
DieterGraef	0:d26c1b55cfca	1192	REJCIVOID(CI_PCOMPRESSION, neg_pcompression);
DieterGraef	0:d26c1b55cfca	1193	REJCIVOID(CI_ACCOMPRESSION, neg_accompression);
DieterGraef	0:d26c1b55cfca	1194
DieterGraef	0:d26c1b55cfca	1195	/*
DieterGraef	0:d26c1b55cfca	1196	* If there are any remaining CIs, then this packet is bad.
DieterGraef	0:d26c1b55cfca	1197	*/
DieterGraef	0:d26c1b55cfca	1198	if (len != 0) {
DieterGraef	0:d26c1b55cfca	1199	goto bad;
DieterGraef	0:d26c1b55cfca	1200	}
DieterGraef	0:d26c1b55cfca	1201	/*
DieterGraef	0:d26c1b55cfca	1202	* Now we can update state.
DieterGraef	0:d26c1b55cfca	1203	*/
DieterGraef	0:d26c1b55cfca	1204	if (f->state != LS_OPENED) {
DieterGraef	0:d26c1b55cfca	1205	*go = try;
DieterGraef	0:d26c1b55cfca	1206	}
DieterGraef	0:d26c1b55cfca	1207	return 1;
DieterGraef	0:d26c1b55cfca	1208
DieterGraef	0:d26c1b55cfca	1209	bad:
DieterGraef	0:d26c1b55cfca	1210	LCPDEBUG(LOG_WARNING, ("lcp_rejci: received bad Reject!\n"));
DieterGraef	0:d26c1b55cfca	1211	return 0;
DieterGraef	0:d26c1b55cfca	1212	}
DieterGraef	0:d26c1b55cfca	1213
DieterGraef	0:d26c1b55cfca	1214
DieterGraef	0:d26c1b55cfca	1215	/*
DieterGraef	0:d26c1b55cfca	1216	* lcp_reqci - Check the peer's requested CIs and send appropriate response.
DieterGraef	0:d26c1b55cfca	1217	*
DieterGraef	0:d26c1b55cfca	1218	* Returns: CONFACK, CONFNAK or CONFREJ and input packet modified
DieterGraef	0:d26c1b55cfca	1219	* appropriately. If reject_if_disagree is non-zero, doesn't return
DieterGraef	0:d26c1b55cfca	1220	* CONFNAK; returns CONFREJ if it can't return CONFACK.
DieterGraef	0:d26c1b55cfca	1221	*/
DieterGraef	0:d26c1b55cfca	1222	static int
DieterGraef	0:d26c1b55cfca	1223	lcp_reqci(fsm *f,
DieterGraef	0:d26c1b55cfca	1224	u_char inp, / Requested CIs */
DieterGraef	0:d26c1b55cfca	1225	int lenp, / Length of requested CIs */
DieterGraef	0:d26c1b55cfca	1226	int reject_if_disagree)
DieterGraef	0:d26c1b55cfca	1227	{
DieterGraef	0:d26c1b55cfca	1228	lcp_options *go = &lcp_gotoptions[f->unit];
DieterGraef	0:d26c1b55cfca	1229	lcp_options *ho = &lcp_hisoptions[f->unit];
DieterGraef	0:d26c1b55cfca	1230	lcp_options *ao = &lcp_allowoptions[f->unit];
DieterGraef	0:d26c1b55cfca	1231	u_char cip, next; /* Pointer to current and next CIs */
DieterGraef	0:d26c1b55cfca	1232	int cilen, citype; /* Parsed len, type */
DieterGraef	0:d26c1b55cfca	1233	u_char cichar; /* Parsed char value */
DieterGraef	0:d26c1b55cfca	1234	u_short cishort; /* Parsed short value */
DieterGraef	0:d26c1b55cfca	1235	u32_t cilong; /* Parse long value */
DieterGraef	0:d26c1b55cfca	1236	int rc = CONFACK; /* Final packet return code */
DieterGraef	0:d26c1b55cfca	1237	int orc; /* Individual option return code */
DieterGraef	0:d26c1b55cfca	1238	u_char p; / Pointer to next char to parse */
DieterGraef	0:d26c1b55cfca	1239	u_char rejp; / Pointer to next char in reject frame */
DieterGraef	0:d26c1b55cfca	1240	u_char nakp; / Pointer to next char in Nak frame */
DieterGraef	0:d26c1b55cfca	1241	int l = lenp; / Length left */
DieterGraef	0:d26c1b55cfca	1242	#if TRACELCP > 0
DieterGraef	0:d26c1b55cfca	1243	char traceBuf[80];
DieterGraef	0:d26c1b55cfca	1244	size_t traceNdx = 0;
DieterGraef	0:d26c1b55cfca	1245	#endif
DieterGraef	0:d26c1b55cfca	1246
DieterGraef	0:d26c1b55cfca	1247	/*
DieterGraef	0:d26c1b55cfca	1248	* Reset all his options.
DieterGraef	0:d26c1b55cfca	1249	*/
DieterGraef	0:d26c1b55cfca	1250	BZERO(ho, sizeof(*ho));
DieterGraef	0:d26c1b55cfca	1251
DieterGraef	0:d26c1b55cfca	1252	/*
DieterGraef	0:d26c1b55cfca	1253	* Process all his options.
DieterGraef	0:d26c1b55cfca	1254	*/
DieterGraef	0:d26c1b55cfca	1255	next = inp;
DieterGraef	0:d26c1b55cfca	1256	nakp = nak_buffer;
DieterGraef	0:d26c1b55cfca	1257	rejp = inp;
DieterGraef	0:d26c1b55cfca	1258	while (l) {
DieterGraef	0:d26c1b55cfca	1259	orc = CONFACK; /* Assume success */
DieterGraef	0:d26c1b55cfca	1260	cip = p = next; /* Remember begining of CI */
DieterGraef	0:d26c1b55cfca	1261	if (l < 2 \|\| /* Not enough data for CI header or */
DieterGraef	0:d26c1b55cfca	1262	p[1] < 2 \|\| /* CI length too small or */
DieterGraef	0:d26c1b55cfca	1263	p[1] > l) { /* CI length too big? */
DieterGraef	0:d26c1b55cfca	1264	LCPDEBUG(LOG_WARNING, ("lcp_reqci: bad CI length!\n"));
DieterGraef	0:d26c1b55cfca	1265	orc = CONFREJ; /* Reject bad CI */
DieterGraef	0:d26c1b55cfca	1266	cilen = l; /* Reject till end of packet */
DieterGraef	0:d26c1b55cfca	1267	l = 0; /* Don't loop again */
DieterGraef	0:d26c1b55cfca	1268	citype = 0;
DieterGraef	0:d26c1b55cfca	1269	goto endswitch;
DieterGraef	0:d26c1b55cfca	1270	}
DieterGraef	0:d26c1b55cfca	1271	GETCHAR(citype, p); /* Parse CI type */
DieterGraef	0:d26c1b55cfca	1272	GETCHAR(cilen, p); /* Parse CI length */
DieterGraef	0:d26c1b55cfca	1273	l -= cilen; /* Adjust remaining length */
DieterGraef	0:d26c1b55cfca	1274	next += cilen; /* Step to next CI */
DieterGraef	0:d26c1b55cfca	1275
DieterGraef	0:d26c1b55cfca	1276	switch (citype) { /* Check CI type */
DieterGraef	0:d26c1b55cfca	1277	case CI_MRU:
DieterGraef	0:d26c1b55cfca	1278	if (!ao->neg_mru) { /* Allow option? */
DieterGraef	0:d26c1b55cfca	1279	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - not allowed\n"));
DieterGraef	0:d26c1b55cfca	1280	orc = CONFREJ; /* Reject CI */
DieterGraef	0:d26c1b55cfca	1281	break;
DieterGraef	0:d26c1b55cfca	1282	} else if (cilen != CILEN_SHORT) { /* Check CI length */
DieterGraef	0:d26c1b55cfca	1283	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - bad length\n"));
DieterGraef	0:d26c1b55cfca	1284	orc = CONFREJ; /* Reject CI */
DieterGraef	0:d26c1b55cfca	1285	break;
DieterGraef	0:d26c1b55cfca	1286	}
DieterGraef	0:d26c1b55cfca	1287	GETSHORT(cishort, p); /* Parse MRU */
DieterGraef	0:d26c1b55cfca	1288
DieterGraef	0:d26c1b55cfca	1289	/*
DieterGraef	0:d26c1b55cfca	1290	* He must be able to receive at least our minimum.
DieterGraef	0:d26c1b55cfca	1291	* No need to check a maximum. If he sends a large number,
DieterGraef	0:d26c1b55cfca	1292	* we'll just ignore it.
DieterGraef	0:d26c1b55cfca	1293	*/
DieterGraef	0:d26c1b55cfca	1294	if (cishort < PPP_MINMRU) {
DieterGraef	0:d26c1b55cfca	1295	LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak - MRU too small\n"));
DieterGraef	0:d26c1b55cfca	1296	orc = CONFNAK; /* Nak CI */
DieterGraef	0:d26c1b55cfca	1297	PUTCHAR(CI_MRU, nakp);
DieterGraef	0:d26c1b55cfca	1298	PUTCHAR(CILEN_SHORT, nakp);
DieterGraef	0:d26c1b55cfca	1299	PUTSHORT(PPP_MINMRU, nakp); /* Give him a hint */
DieterGraef	0:d26c1b55cfca	1300	break;
DieterGraef	0:d26c1b55cfca	1301	}
DieterGraef	0:d26c1b55cfca	1302	ho->neg_mru = 1; /* Remember he sent MRU */
DieterGraef	0:d26c1b55cfca	1303	ho->mru = cishort; /* And remember value */
DieterGraef	0:d26c1b55cfca	1304	#if TRACELCP > 0
DieterGraef	0:d26c1b55cfca	1305	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MRU %d", cishort);
DieterGraef	0:d26c1b55cfca	1306	traceNdx = strlen(traceBuf);
DieterGraef	0:d26c1b55cfca	1307	#endif
DieterGraef	0:d26c1b55cfca	1308	break;
DieterGraef	0:d26c1b55cfca	1309
DieterGraef	0:d26c1b55cfca	1310	case CI_ASYNCMAP:
DieterGraef	0:d26c1b55cfca	1311	if (!ao->neg_asyncmap) {
DieterGraef	0:d26c1b55cfca	1312	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP not allowed\n"));
DieterGraef	0:d26c1b55cfca	1313	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1314	break;
DieterGraef	0:d26c1b55cfca	1315	} else if (cilen != CILEN_LONG) {
DieterGraef	0:d26c1b55cfca	1316	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP bad length\n"));
DieterGraef	0:d26c1b55cfca	1317	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1318	break;
DieterGraef	0:d26c1b55cfca	1319	}
DieterGraef	0:d26c1b55cfca	1320	GETLONG(cilong, p);
DieterGraef	0:d26c1b55cfca	1321
DieterGraef	0:d26c1b55cfca	1322	/*
DieterGraef	0:d26c1b55cfca	1323	* Asyncmap must have set at least the bits
DieterGraef	0:d26c1b55cfca	1324	* which are set in lcp_allowoptions[unit].asyncmap.
DieterGraef	0:d26c1b55cfca	1325	*/
DieterGraef	0:d26c1b55cfca	1326	if ((ao->asyncmap & ~cilong) != 0) {
DieterGraef	0:d26c1b55cfca	1327	LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak ASYNCMAP %lX missing %lX\n",
DieterGraef	0:d26c1b55cfca	1328	cilong, ao->asyncmap));
DieterGraef	0:d26c1b55cfca	1329	orc = CONFNAK;
DieterGraef	0:d26c1b55cfca	1330	PUTCHAR(CI_ASYNCMAP, nakp);
DieterGraef	0:d26c1b55cfca	1331	PUTCHAR(CILEN_LONG, nakp);
DieterGraef	0:d26c1b55cfca	1332	PUTLONG(ao->asyncmap \| cilong, nakp);
DieterGraef	0:d26c1b55cfca	1333	break;
DieterGraef	0:d26c1b55cfca	1334	}
DieterGraef	0:d26c1b55cfca	1335	ho->neg_asyncmap = 1;
DieterGraef	0:d26c1b55cfca	1336	ho->asyncmap = cilong;
DieterGraef	0:d26c1b55cfca	1337	#if TRACELCP > 0
DieterGraef	0:d26c1b55cfca	1338	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ASYNCMAP=%lX", cilong);
DieterGraef	0:d26c1b55cfca	1339	traceNdx = strlen(traceBuf);
DieterGraef	0:d26c1b55cfca	1340	#endif
DieterGraef	0:d26c1b55cfca	1341	break;
DieterGraef	0:d26c1b55cfca	1342
DieterGraef	0:d26c1b55cfca	1343	case CI_AUTHTYPE:
DieterGraef	0:d26c1b55cfca	1344	if (cilen < CILEN_SHORT) {
DieterGraef	0:d26c1b55cfca	1345	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE missing arg\n"));
DieterGraef	0:d26c1b55cfca	1346	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1347	break;
DieterGraef	0:d26c1b55cfca	1348	} else if (!(ao->neg_upap \|\| ao->neg_chap)) {
DieterGraef	0:d26c1b55cfca	1349	/*
DieterGraef	0:d26c1b55cfca	1350	* Reject the option if we're not willing to authenticate.
DieterGraef	0:d26c1b55cfca	1351	*/
DieterGraef	0:d26c1b55cfca	1352	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE not allowed\n"));
DieterGraef	0:d26c1b55cfca	1353	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1354	break;
DieterGraef	0:d26c1b55cfca	1355	}
DieterGraef	0:d26c1b55cfca	1356	GETSHORT(cishort, p);
DieterGraef	0:d26c1b55cfca	1357
DieterGraef	0:d26c1b55cfca	1358	/*
DieterGraef	0:d26c1b55cfca	1359	* Authtype must be UPAP or CHAP.
DieterGraef	0:d26c1b55cfca	1360	*
DieterGraef	0:d26c1b55cfca	1361	* Note: if both ao->neg_upap and ao->neg_chap are set,
DieterGraef	0:d26c1b55cfca	1362	* and the peer sends a Configure-Request with two
DieterGraef	0:d26c1b55cfca	1363	* authenticate-protocol requests, one for CHAP and one
DieterGraef	0:d26c1b55cfca	1364	* for UPAP, then we will reject the second request.
DieterGraef	0:d26c1b55cfca	1365	* Whether we end up doing CHAP or UPAP depends then on
DieterGraef	0:d26c1b55cfca	1366	* the ordering of the CIs in the peer's Configure-Request.
DieterGraef	0:d26c1b55cfca	1367	*/
DieterGraef	0:d26c1b55cfca	1368
DieterGraef	0:d26c1b55cfca	1369	if (cishort == PPP_PAP) {
DieterGraef	0:d26c1b55cfca	1370	if (ho->neg_chap) { /* we've already accepted CHAP */
DieterGraef	0:d26c1b55cfca	1371	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP already accepted\n"));
DieterGraef	0:d26c1b55cfca	1372	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1373	break;
DieterGraef	0:d26c1b55cfca	1374	} else if (cilen != CILEN_SHORT) {
DieterGraef	0:d26c1b55cfca	1375	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP bad len\n"));
DieterGraef	0:d26c1b55cfca	1376	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1377	break;
DieterGraef	0:d26c1b55cfca	1378	}
DieterGraef	0:d26c1b55cfca	1379	if (!ao->neg_upap) { /* we don't want to do PAP */
DieterGraef	0:d26c1b55cfca	1380	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE PAP not allowed\n"));
DieterGraef	0:d26c1b55cfca	1381	orc = CONFNAK; /* NAK it and suggest CHAP */
DieterGraef	0:d26c1b55cfca	1382	PUTCHAR(CI_AUTHTYPE, nakp);
DieterGraef	0:d26c1b55cfca	1383	PUTCHAR(CILEN_CHAP, nakp);
DieterGraef	0:d26c1b55cfca	1384	PUTSHORT(PPP_CHAP, nakp);
DieterGraef	0:d26c1b55cfca	1385	PUTCHAR(ao->chap_mdtype, nakp);
DieterGraef	0:d26c1b55cfca	1386	break;
DieterGraef	0:d26c1b55cfca	1387	}
DieterGraef	0:d26c1b55cfca	1388	ho->neg_upap = 1;
DieterGraef	0:d26c1b55cfca	1389	#if TRACELCP > 0
DieterGraef	0:d26c1b55cfca	1390	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PAP (%X)", cishort);
DieterGraef	0:d26c1b55cfca	1391	traceNdx = strlen(traceBuf);
DieterGraef	0:d26c1b55cfca	1392	#endif
DieterGraef	0:d26c1b55cfca	1393	break;
DieterGraef	0:d26c1b55cfca	1394	}
DieterGraef	0:d26c1b55cfca	1395	if (cishort == PPP_CHAP) {
DieterGraef	0:d26c1b55cfca	1396	if (ho->neg_upap) { /* we've already accepted PAP */
DieterGraef	0:d26c1b55cfca	1397	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP accepted PAP\n"));
DieterGraef	0:d26c1b55cfca	1398	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1399	break;
DieterGraef	0:d26c1b55cfca	1400	} else if (cilen != CILEN_CHAP) {
DieterGraef	0:d26c1b55cfca	1401	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP bad len\n"));
DieterGraef	0:d26c1b55cfca	1402	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1403	break;
DieterGraef	0:d26c1b55cfca	1404	}
DieterGraef	0:d26c1b55cfca	1405	if (!ao->neg_chap) { /* we don't want to do CHAP */
DieterGraef	0:d26c1b55cfca	1406	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP not allowed\n"));
DieterGraef	0:d26c1b55cfca	1407	orc = CONFNAK; /* NAK it and suggest PAP */
DieterGraef	0:d26c1b55cfca	1408	PUTCHAR(CI_AUTHTYPE, nakp);
DieterGraef	0:d26c1b55cfca	1409	PUTCHAR(CILEN_SHORT, nakp);
DieterGraef	0:d26c1b55cfca	1410	PUTSHORT(PPP_PAP, nakp);
DieterGraef	0:d26c1b55cfca	1411	break;
DieterGraef	0:d26c1b55cfca	1412	}
DieterGraef	0:d26c1b55cfca	1413	GETCHAR(cichar, p); /* get digest type*/
DieterGraef	0:d26c1b55cfca	1414	if (cichar != CHAP_DIGEST_MD5
DieterGraef	0:d26c1b55cfca	1415	#if MSCHAP_SUPPORT
DieterGraef	0:d26c1b55cfca	1416	&& cichar != CHAP_MICROSOFT
DieterGraef	0:d26c1b55cfca	1417	#endif
DieterGraef	0:d26c1b55cfca	1418	) {
DieterGraef	0:d26c1b55cfca	1419	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP digest=%d\n", (int)cichar));
DieterGraef	0:d26c1b55cfca	1420	orc = CONFNAK;
DieterGraef	0:d26c1b55cfca	1421	PUTCHAR(CI_AUTHTYPE, nakp);
DieterGraef	0:d26c1b55cfca	1422	PUTCHAR(CILEN_CHAP, nakp);
DieterGraef	0:d26c1b55cfca	1423	PUTSHORT(PPP_CHAP, nakp);
DieterGraef	0:d26c1b55cfca	1424	PUTCHAR(ao->chap_mdtype, nakp);
DieterGraef	0:d26c1b55cfca	1425	break;
DieterGraef	0:d26c1b55cfca	1426	}
DieterGraef	0:d26c1b55cfca	1427	#if TRACELCP > 0
DieterGraef	0:d26c1b55cfca	1428	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CHAP %X,%d", cishort, (int)cichar);
DieterGraef	0:d26c1b55cfca	1429	traceNdx = strlen(traceBuf);
DieterGraef	0:d26c1b55cfca	1430	#endif
DieterGraef	0:d26c1b55cfca	1431	ho->chap_mdtype = cichar; /* save md type */
DieterGraef	0:d26c1b55cfca	1432	ho->neg_chap = 1;
DieterGraef	0:d26c1b55cfca	1433	break;
DieterGraef	0:d26c1b55cfca	1434	}
DieterGraef	0:d26c1b55cfca	1435
DieterGraef	0:d26c1b55cfca	1436	/*
DieterGraef	0:d26c1b55cfca	1437	* We don't recognize the protocol they're asking for.
DieterGraef	0:d26c1b55cfca	1438	* Nak it with something we're willing to do.
DieterGraef	0:d26c1b55cfca	1439	* (At this point we know ao->neg_upap \|\| ao->neg_chap.)
DieterGraef	0:d26c1b55cfca	1440	*/
DieterGraef	0:d26c1b55cfca	1441	orc = CONFNAK;
DieterGraef	0:d26c1b55cfca	1442	PUTCHAR(CI_AUTHTYPE, nakp);
DieterGraef	0:d26c1b55cfca	1443	if (ao->neg_chap) {
DieterGraef	0:d26c1b55cfca	1444	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req CHAP\n", cishort));
DieterGraef	0:d26c1b55cfca	1445	PUTCHAR(CILEN_CHAP, nakp);
DieterGraef	0:d26c1b55cfca	1446	PUTSHORT(PPP_CHAP, nakp);
DieterGraef	0:d26c1b55cfca	1447	PUTCHAR(ao->chap_mdtype, nakp);
DieterGraef	0:d26c1b55cfca	1448	} else {
DieterGraef	0:d26c1b55cfca	1449	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req PAP\n", cishort));
DieterGraef	0:d26c1b55cfca	1450	PUTCHAR(CILEN_SHORT, nakp);
DieterGraef	0:d26c1b55cfca	1451	PUTSHORT(PPP_PAP, nakp);
DieterGraef	0:d26c1b55cfca	1452	}
DieterGraef	0:d26c1b55cfca	1453	break;
DieterGraef	0:d26c1b55cfca	1454
DieterGraef	0:d26c1b55cfca	1455	case CI_QUALITY:
DieterGraef	0:d26c1b55cfca	1456	GETSHORT(cishort, p);
DieterGraef	0:d26c1b55cfca	1457	GETLONG(cilong, p);
DieterGraef	0:d26c1b55cfca	1458	#if TRACELCP > 0
DieterGraef	0:d26c1b55cfca	1459	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " QUALITY (%x %x)", cishort, (unsigned int) cilong);
DieterGraef	0:d26c1b55cfca	1460	traceNdx = strlen(traceBuf);
DieterGraef	0:d26c1b55cfca	1461	#endif
DieterGraef	0:d26c1b55cfca	1462
DieterGraef	0:d26c1b55cfca	1463	if (!ao->neg_lqr \|\|
DieterGraef	0:d26c1b55cfca	1464	cilen != CILEN_LQR) {
DieterGraef	0:d26c1b55cfca	1465	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1466	break;
DieterGraef	0:d26c1b55cfca	1467	}
DieterGraef	0:d26c1b55cfca	1468
DieterGraef	0:d26c1b55cfca	1469	/*
DieterGraef	0:d26c1b55cfca	1470	* Check the protocol and the reporting period.
DieterGraef	0:d26c1b55cfca	1471	* XXX When should we Nak this, and what with?
DieterGraef	0:d26c1b55cfca	1472	*/
DieterGraef	0:d26c1b55cfca	1473	if (cishort != PPP_LQR) {
DieterGraef	0:d26c1b55cfca	1474	orc = CONFNAK;
DieterGraef	0:d26c1b55cfca	1475	PUTCHAR(CI_QUALITY, nakp);
DieterGraef	0:d26c1b55cfca	1476	PUTCHAR(CILEN_LQR, nakp);
DieterGraef	0:d26c1b55cfca	1477	PUTSHORT(PPP_LQR, nakp);
DieterGraef	0:d26c1b55cfca	1478	PUTLONG(ao->lqr_period, nakp);
DieterGraef	0:d26c1b55cfca	1479	break;
DieterGraef	0:d26c1b55cfca	1480	}
DieterGraef	0:d26c1b55cfca	1481	break;
DieterGraef	0:d26c1b55cfca	1482
DieterGraef	0:d26c1b55cfca	1483	case CI_MAGICNUMBER:
DieterGraef	0:d26c1b55cfca	1484	if (!(ao->neg_magicnumber \|\| go->neg_magicnumber) \|\|
DieterGraef	0:d26c1b55cfca	1485	cilen != CILEN_LONG) {
DieterGraef	0:d26c1b55cfca	1486	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1487	break;
DieterGraef	0:d26c1b55cfca	1488	}
DieterGraef	0:d26c1b55cfca	1489	GETLONG(cilong, p);
DieterGraef	0:d26c1b55cfca	1490	#if TRACELCP > 0
DieterGraef	0:d26c1b55cfca	1491	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MAGICNUMBER (%lX)", cilong);
DieterGraef	0:d26c1b55cfca	1492	traceNdx = strlen(traceBuf);
DieterGraef	0:d26c1b55cfca	1493	#endif
DieterGraef	0:d26c1b55cfca	1494
DieterGraef	0:d26c1b55cfca	1495	/*
DieterGraef	0:d26c1b55cfca	1496	* He must have a different magic number.
DieterGraef	0:d26c1b55cfca	1497	*/
DieterGraef	0:d26c1b55cfca	1498	if (go->neg_magicnumber &&
DieterGraef	0:d26c1b55cfca	1499	cilong == go->magicnumber) {
DieterGraef	0:d26c1b55cfca	1500	cilong = magic(); /* Don't put magic() inside macro! */
DieterGraef	0:d26c1b55cfca	1501	orc = CONFNAK;
DieterGraef	0:d26c1b55cfca	1502	PUTCHAR(CI_MAGICNUMBER, nakp);
DieterGraef	0:d26c1b55cfca	1503	PUTCHAR(CILEN_LONG, nakp);
DieterGraef	0:d26c1b55cfca	1504	PUTLONG(cilong, nakp);
DieterGraef	0:d26c1b55cfca	1505	break;
DieterGraef	0:d26c1b55cfca	1506	}
DieterGraef	0:d26c1b55cfca	1507	ho->neg_magicnumber = 1;
DieterGraef	0:d26c1b55cfca	1508	ho->magicnumber = cilong;
DieterGraef	0:d26c1b55cfca	1509	break;
DieterGraef	0:d26c1b55cfca	1510
DieterGraef	0:d26c1b55cfca	1511
DieterGraef	0:d26c1b55cfca	1512	case CI_PCOMPRESSION:
DieterGraef	0:d26c1b55cfca	1513	#if TRACELCP > 0
DieterGraef	0:d26c1b55cfca	1514	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PCOMPRESSION");
DieterGraef	0:d26c1b55cfca	1515	traceNdx = strlen(traceBuf);
DieterGraef	0:d26c1b55cfca	1516	#endif
DieterGraef	0:d26c1b55cfca	1517	if (!ao->neg_pcompression \|\|
DieterGraef	0:d26c1b55cfca	1518	cilen != CILEN_VOID) {
DieterGraef	0:d26c1b55cfca	1519	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1520	break;
DieterGraef	0:d26c1b55cfca	1521	}
DieterGraef	0:d26c1b55cfca	1522	ho->neg_pcompression = 1;
DieterGraef	0:d26c1b55cfca	1523	break;
DieterGraef	0:d26c1b55cfca	1524
DieterGraef	0:d26c1b55cfca	1525	case CI_ACCOMPRESSION:
DieterGraef	0:d26c1b55cfca	1526	#if TRACELCP > 0
DieterGraef	0:d26c1b55cfca	1527	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ACCOMPRESSION");
DieterGraef	0:d26c1b55cfca	1528	traceNdx = strlen(traceBuf);
DieterGraef	0:d26c1b55cfca	1529	#endif
DieterGraef	0:d26c1b55cfca	1530	if (!ao->neg_accompression \|\|
DieterGraef	0:d26c1b55cfca	1531	cilen != CILEN_VOID) {
DieterGraef	0:d26c1b55cfca	1532	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1533	break;
DieterGraef	0:d26c1b55cfca	1534	}
DieterGraef	0:d26c1b55cfca	1535	ho->neg_accompression = 1;
DieterGraef	0:d26c1b55cfca	1536	break;
DieterGraef	0:d26c1b55cfca	1537
DieterGraef	0:d26c1b55cfca	1538	case CI_MRRU:
DieterGraef	0:d26c1b55cfca	1539	#if TRACELCP > 0
DieterGraef	0:d26c1b55cfca	1540	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_MRRU");
DieterGraef	0:d26c1b55cfca	1541	traceNdx = strlen(traceBuf);
DieterGraef	0:d26c1b55cfca	1542	#endif
DieterGraef	0:d26c1b55cfca	1543	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1544	break;
DieterGraef	0:d26c1b55cfca	1545
DieterGraef	0:d26c1b55cfca	1546	case CI_SSNHF:
DieterGraef	0:d26c1b55cfca	1547	#if TRACELCP > 0
DieterGraef	0:d26c1b55cfca	1548	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_SSNHF");
DieterGraef	0:d26c1b55cfca	1549	traceNdx = strlen(traceBuf);
DieterGraef	0:d26c1b55cfca	1550	#endif
DieterGraef	0:d26c1b55cfca	1551	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1552	break;
DieterGraef	0:d26c1b55cfca	1553
DieterGraef	0:d26c1b55cfca	1554	case CI_EPDISC:
DieterGraef	0:d26c1b55cfca	1555	#if TRACELCP > 0
DieterGraef	0:d26c1b55cfca	1556	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_EPDISC");
DieterGraef	0:d26c1b55cfca	1557	traceNdx = strlen(traceBuf);
DieterGraef	0:d26c1b55cfca	1558	#endif
DieterGraef	0:d26c1b55cfca	1559	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1560	break;
DieterGraef	0:d26c1b55cfca	1561
DieterGraef	0:d26c1b55cfca	1562	default:
DieterGraef	0:d26c1b55cfca	1563	#if TRACELCP
DieterGraef	0:d26c1b55cfca	1564	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " unknown %d", citype);
DieterGraef	0:d26c1b55cfca	1565	traceNdx = strlen(traceBuf);
DieterGraef	0:d26c1b55cfca	1566	#endif
DieterGraef	0:d26c1b55cfca	1567	orc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1568	break;
DieterGraef	0:d26c1b55cfca	1569	}
DieterGraef	0:d26c1b55cfca	1570
DieterGraef	0:d26c1b55cfca	1571	endswitch:
DieterGraef	0:d26c1b55cfca	1572	#if TRACELCP
DieterGraef	0:d26c1b55cfca	1573	if (traceNdx >= 80 - 32) {
DieterGraef	0:d26c1b55cfca	1574	LCPDEBUG(LOG_INFO, ("lcp_reqci: rcvd%s\n", traceBuf));
DieterGraef	0:d26c1b55cfca	1575	traceNdx = 0;
DieterGraef	0:d26c1b55cfca	1576	}
DieterGraef	0:d26c1b55cfca	1577	#endif
DieterGraef	0:d26c1b55cfca	1578	if (orc == CONFACK && /* Good CI */
DieterGraef	0:d26c1b55cfca	1579	rc != CONFACK) { /* but prior CI wasnt? */
DieterGraef	0:d26c1b55cfca	1580	continue; /* Don't send this one */
DieterGraef	0:d26c1b55cfca	1581	}
DieterGraef	0:d26c1b55cfca	1582
DieterGraef	0:d26c1b55cfca	1583	if (orc == CONFNAK) { /* Nak this CI? */
DieterGraef	0:d26c1b55cfca	1584	if (reject_if_disagree /* Getting fed up with sending NAKs? */
DieterGraef	0:d26c1b55cfca	1585	&& citype != CI_MAGICNUMBER) {
DieterGraef	0:d26c1b55cfca	1586	orc = CONFREJ; /* Get tough if so */
DieterGraef	0:d26c1b55cfca	1587	} else {
DieterGraef	0:d26c1b55cfca	1588	if (rc == CONFREJ) { /* Rejecting prior CI? */
DieterGraef	0:d26c1b55cfca	1589	continue; /* Don't send this one */
DieterGraef	0:d26c1b55cfca	1590	}
DieterGraef	0:d26c1b55cfca	1591	rc = CONFNAK;
DieterGraef	0:d26c1b55cfca	1592	}
DieterGraef	0:d26c1b55cfca	1593	}
DieterGraef	0:d26c1b55cfca	1594	if (orc == CONFREJ) { /* Reject this CI */
DieterGraef	0:d26c1b55cfca	1595	rc = CONFREJ;
DieterGraef	0:d26c1b55cfca	1596	if (cip != rejp) { /* Need to move rejected CI? */
DieterGraef	0:d26c1b55cfca	1597	BCOPY(cip, rejp, cilen); /* Move it */
DieterGraef	0:d26c1b55cfca	1598	}
DieterGraef	0:d26c1b55cfca	1599	INCPTR(cilen, rejp); /* Update output pointer */
DieterGraef	0:d26c1b55cfca	1600	}
DieterGraef	0:d26c1b55cfca	1601	}
DieterGraef	0:d26c1b55cfca	1602
DieterGraef	0:d26c1b55cfca	1603	/*
DieterGraef	0:d26c1b55cfca	1604	* If we wanted to send additional NAKs (for unsent CIs), the
DieterGraef	0:d26c1b55cfca	1605	* code would go here. The extra NAKs would go at *nakp.
DieterGraef	0:d26c1b55cfca	1606	* At present there are no cases where we want to ask the
DieterGraef	0:d26c1b55cfca	1607	* peer to negotiate an option.
DieterGraef	0:d26c1b55cfca	1608	*/
DieterGraef	0:d26c1b55cfca	1609
DieterGraef	0:d26c1b55cfca	1610	switch (rc) {
DieterGraef	0:d26c1b55cfca	1611	case CONFACK:
DieterGraef	0:d26c1b55cfca	1612	*lenp = (int)(next - inp);
DieterGraef	0:d26c1b55cfca	1613	break;
DieterGraef	0:d26c1b55cfca	1614	case CONFNAK:
DieterGraef	0:d26c1b55cfca	1615	/*
DieterGraef	0:d26c1b55cfca	1616	* Copy the Nak'd options from the nak_buffer to the caller's buffer.
DieterGraef	0:d26c1b55cfca	1617	*/
DieterGraef	0:d26c1b55cfca	1618	*lenp = (int)(nakp - nak_buffer);
DieterGraef	0:d26c1b55cfca	1619	BCOPY(nak_buffer, inp, *lenp);
DieterGraef	0:d26c1b55cfca	1620	break;
DieterGraef	0:d26c1b55cfca	1621	case CONFREJ:
DieterGraef	0:d26c1b55cfca	1622	*lenp = (int)(rejp - inp);
DieterGraef	0:d26c1b55cfca	1623	break;
DieterGraef	0:d26c1b55cfca	1624	}
DieterGraef	0:d26c1b55cfca	1625
DieterGraef	0:d26c1b55cfca	1626	#if TRACELCP > 0
DieterGraef	0:d26c1b55cfca	1627	if (traceNdx > 0) {
DieterGraef	0:d26c1b55cfca	1628	LCPDEBUG(LOG_INFO, ("lcp_reqci: %s\n", traceBuf));
DieterGraef	0:d26c1b55cfca	1629	}
DieterGraef	0:d26c1b55cfca	1630	#endif
DieterGraef	0:d26c1b55cfca	1631	LCPDEBUG(LOG_INFO, ("lcp_reqci: returning CONF%s.\n", CODENAME(rc)));
DieterGraef	0:d26c1b55cfca	1632	return (rc); /* Return final code */
DieterGraef	0:d26c1b55cfca	1633	}
DieterGraef	0:d26c1b55cfca	1634
DieterGraef	0:d26c1b55cfca	1635
DieterGraef	0:d26c1b55cfca	1636	/*
DieterGraef	0:d26c1b55cfca	1637	* lcp_up - LCP has come UP.
DieterGraef	0:d26c1b55cfca	1638	*/
DieterGraef	0:d26c1b55cfca	1639	static void
DieterGraef	0:d26c1b55cfca	1640	lcp_up(fsm *f)
DieterGraef	0:d26c1b55cfca	1641	{
DieterGraef	0:d26c1b55cfca	1642	lcp_options *wo = &lcp_wantoptions[f->unit];
DieterGraef	0:d26c1b55cfca	1643	lcp_options *ho = &lcp_hisoptions[f->unit];
DieterGraef	0:d26c1b55cfca	1644	lcp_options *go = &lcp_gotoptions[f->unit];
DieterGraef	0:d26c1b55cfca	1645	lcp_options *ao = &lcp_allowoptions[f->unit];
DieterGraef	0:d26c1b55cfca	1646
DieterGraef	0:d26c1b55cfca	1647	if (!go->neg_magicnumber) {
DieterGraef	0:d26c1b55cfca	1648	go->magicnumber = 0;
DieterGraef	0:d26c1b55cfca	1649	}
DieterGraef	0:d26c1b55cfca	1650	if (!ho->neg_magicnumber) {
DieterGraef	0:d26c1b55cfca	1651	ho->magicnumber = 0;
DieterGraef	0:d26c1b55cfca	1652	}
DieterGraef	0:d26c1b55cfca	1653
DieterGraef	0:d26c1b55cfca	1654	/*
DieterGraef	0:d26c1b55cfca	1655	* Set our MTU to the smaller of the MTU we wanted and
DieterGraef	0:d26c1b55cfca	1656	* the MRU our peer wanted. If we negotiated an MRU,
DieterGraef	0:d26c1b55cfca	1657	* set our MRU to the larger of value we wanted and
DieterGraef	0:d26c1b55cfca	1658	* the value we got in the negotiation.
DieterGraef	0:d26c1b55cfca	1659	*/
DieterGraef	0:d26c1b55cfca	1660	ppp_send_config(f->unit, LWIP_MIN(ao->mru, (ho->neg_mru? ho->mru: PPP_MRU)),
DieterGraef	0:d26c1b55cfca	1661	(ho->neg_asyncmap? ho->asyncmap: 0xffffffffl),
DieterGraef	0:d26c1b55cfca	1662	ho->neg_pcompression, ho->neg_accompression);
DieterGraef	0:d26c1b55cfca	1663	/*
DieterGraef	0:d26c1b55cfca	1664	* If the asyncmap hasn't been negotiated, we really should
DieterGraef	0:d26c1b55cfca	1665	* set the receive asyncmap to ffffffff, but we set it to 0
DieterGraef	0:d26c1b55cfca	1666	* for backwards contemptibility.
DieterGraef	0:d26c1b55cfca	1667	*/
DieterGraef	0:d26c1b55cfca	1668	ppp_recv_config(f->unit, (go->neg_mru? LWIP_MAX(wo->mru, go->mru): PPP_MRU),
DieterGraef	0:d26c1b55cfca	1669	(go->neg_asyncmap? go->asyncmap: 0x00000000),
DieterGraef	0:d26c1b55cfca	1670	go->neg_pcompression, go->neg_accompression);
DieterGraef	0:d26c1b55cfca	1671
DieterGraef	0:d26c1b55cfca	1672	if (ho->neg_mru) {
DieterGraef	0:d26c1b55cfca	1673	peer_mru[f->unit] = ho->mru;
DieterGraef	0:d26c1b55cfca	1674	}
DieterGraef	0:d26c1b55cfca	1675
DieterGraef	0:d26c1b55cfca	1676	lcp_echo_lowerup(f->unit); /* Enable echo messages */
DieterGraef	0:d26c1b55cfca	1677
DieterGraef	0:d26c1b55cfca	1678	link_established(f->unit); /* The link is up; authenticate now */
DieterGraef	0:d26c1b55cfca	1679	}
DieterGraef	0:d26c1b55cfca	1680
DieterGraef	0:d26c1b55cfca	1681
DieterGraef	0:d26c1b55cfca	1682	/*
DieterGraef	0:d26c1b55cfca	1683	* lcp_down - LCP has gone DOWN.
DieterGraef	0:d26c1b55cfca	1684	*
DieterGraef	0:d26c1b55cfca	1685	* Alert other protocols.
DieterGraef	0:d26c1b55cfca	1686	*/
DieterGraef	0:d26c1b55cfca	1687	static void
DieterGraef	0:d26c1b55cfca	1688	lcp_down(fsm *f)
DieterGraef	0:d26c1b55cfca	1689	{
DieterGraef	0:d26c1b55cfca	1690	lcp_options *go = &lcp_gotoptions[f->unit];
DieterGraef	0:d26c1b55cfca	1691
DieterGraef	0:d26c1b55cfca	1692	lcp_echo_lowerdown(f->unit);
DieterGraef	0:d26c1b55cfca	1693
DieterGraef	0:d26c1b55cfca	1694	link_down(f->unit);
DieterGraef	0:d26c1b55cfca	1695
DieterGraef	0:d26c1b55cfca	1696	ppp_send_config(f->unit, PPP_MRU, 0xffffffffl, 0, 0);
DieterGraef	0:d26c1b55cfca	1697	ppp_recv_config(f->unit, PPP_MRU,
DieterGraef	0:d26c1b55cfca	1698	(go->neg_asyncmap? go->asyncmap: 0x00000000),
DieterGraef	0:d26c1b55cfca	1699	go->neg_pcompression, go->neg_accompression);
DieterGraef	0:d26c1b55cfca	1700	peer_mru[f->unit] = PPP_MRU;
DieterGraef	0:d26c1b55cfca	1701	}
DieterGraef	0:d26c1b55cfca	1702
DieterGraef	0:d26c1b55cfca	1703
DieterGraef	0:d26c1b55cfca	1704	/*
DieterGraef	0:d26c1b55cfca	1705	* lcp_starting - LCP needs the lower layer up.
DieterGraef	0:d26c1b55cfca	1706	*/
DieterGraef	0:d26c1b55cfca	1707	static void
DieterGraef	0:d26c1b55cfca	1708	lcp_starting(fsm *f)
DieterGraef	0:d26c1b55cfca	1709	{
DieterGraef	0:d26c1b55cfca	1710	link_required(f->unit); /* lwip: currently does nothing */
DieterGraef	0:d26c1b55cfca	1711	}
DieterGraef	0:d26c1b55cfca	1712
DieterGraef	0:d26c1b55cfca	1713
DieterGraef	0:d26c1b55cfca	1714	/*
DieterGraef	0:d26c1b55cfca	1715	* lcp_finished - LCP has finished with the lower layer.
DieterGraef	0:d26c1b55cfca	1716	*/
DieterGraef	0:d26c1b55cfca	1717	static void
DieterGraef	0:d26c1b55cfca	1718	lcp_finished(fsm *f)
DieterGraef	0:d26c1b55cfca	1719	{
DieterGraef	0:d26c1b55cfca	1720	link_terminated(f->unit); /* we are finished with the link */
DieterGraef	0:d26c1b55cfca	1721	}
DieterGraef	0:d26c1b55cfca	1722
DieterGraef	0:d26c1b55cfca	1723
DieterGraef	0:d26c1b55cfca	1724	#if PPP_ADDITIONAL_CALLBACKS
DieterGraef	0:d26c1b55cfca	1725	/*
DieterGraef	0:d26c1b55cfca	1726	* print_string - print a readable representation of a string using
DieterGraef	0:d26c1b55cfca	1727	* printer.
DieterGraef	0:d26c1b55cfca	1728	*/
DieterGraef	0:d26c1b55cfca	1729	static void
DieterGraef	0:d26c1b55cfca	1730	print_string( char p, int len, void (printer) (void , char , ...), void *arg)
DieterGraef	0:d26c1b55cfca	1731	{
DieterGraef	0:d26c1b55cfca	1732	int c;
DieterGraef	0:d26c1b55cfca	1733
DieterGraef	0:d26c1b55cfca	1734	printer(arg, "\"");
DieterGraef	0:d26c1b55cfca	1735	for (; len > 0; --len) {
DieterGraef	0:d26c1b55cfca	1736	c = *p++;
DieterGraef	0:d26c1b55cfca	1737	if (' ' <= c && c <= '~') {
DieterGraef	0:d26c1b55cfca	1738	if (c == '\\' \|\| c == '"') {
DieterGraef	0:d26c1b55cfca	1739	printer(arg, "\\");
DieterGraef	0:d26c1b55cfca	1740	}
DieterGraef	0:d26c1b55cfca	1741	printer(arg, "%c", c);
DieterGraef	0:d26c1b55cfca	1742	} else {
DieterGraef	0:d26c1b55cfca	1743	switch (c) {
DieterGraef	0:d26c1b55cfca	1744	case '\n':
DieterGraef	0:d26c1b55cfca	1745	printer(arg, "\\n");
DieterGraef	0:d26c1b55cfca	1746	break;
DieterGraef	0:d26c1b55cfca	1747	case '\r':
DieterGraef	0:d26c1b55cfca	1748	printer(arg, "\\r");
DieterGraef	0:d26c1b55cfca	1749	break;
DieterGraef	0:d26c1b55cfca	1750	case '\t':
DieterGraef	0:d26c1b55cfca	1751	printer(arg, "\\t");
DieterGraef	0:d26c1b55cfca	1752	break;
DieterGraef	0:d26c1b55cfca	1753	default:
DieterGraef	0:d26c1b55cfca	1754	printer(arg, "\\%.3o", c);
DieterGraef	0:d26c1b55cfca	1755	}
DieterGraef	0:d26c1b55cfca	1756	}
DieterGraef	0:d26c1b55cfca	1757	}
DieterGraef	0:d26c1b55cfca	1758	printer(arg, "\"");
DieterGraef	0:d26c1b55cfca	1759	}
DieterGraef	0:d26c1b55cfca	1760
DieterGraef	0:d26c1b55cfca	1761
DieterGraef	0:d26c1b55cfca	1762	/*
DieterGraef	0:d26c1b55cfca	1763	* lcp_printpkt - print the contents of an LCP packet.
DieterGraef	0:d26c1b55cfca	1764	*/
DieterGraef	0:d26c1b55cfca	1765	static char *lcp_codenames[] = {
DieterGraef	0:d26c1b55cfca	1766	"ConfReq", "ConfAck", "ConfNak", "ConfRej",
DieterGraef	0:d26c1b55cfca	1767	"TermReq", "TermAck", "CodeRej", "ProtRej",
DieterGraef	0:d26c1b55cfca	1768	"EchoReq", "EchoRep", "DiscReq"
DieterGraef	0:d26c1b55cfca	1769	};
DieterGraef	0:d26c1b55cfca	1770
DieterGraef	0:d26c1b55cfca	1771	static int
DieterGraef	0:d26c1b55cfca	1772	lcp_printpkt( u_char p, int plen, void (printer) (void , char , ...), void *arg)
DieterGraef	0:d26c1b55cfca	1773	{
DieterGraef	0:d26c1b55cfca	1774	int code, id, len, olen;
DieterGraef	0:d26c1b55cfca	1775	u_char pstart, optend;
DieterGraef	0:d26c1b55cfca	1776	u_short cishort;
DieterGraef	0:d26c1b55cfca	1777	u32_t cilong;
DieterGraef	0:d26c1b55cfca	1778
DieterGraef	0:d26c1b55cfca	1779	if (plen < HEADERLEN) {
DieterGraef	0:d26c1b55cfca	1780	return 0;
DieterGraef	0:d26c1b55cfca	1781	}
DieterGraef	0:d26c1b55cfca	1782	pstart = p;
DieterGraef	0:d26c1b55cfca	1783	GETCHAR(code, p);
DieterGraef	0:d26c1b55cfca	1784	GETCHAR(id, p);
DieterGraef	0:d26c1b55cfca	1785	GETSHORT(len, p);
DieterGraef	0:d26c1b55cfca	1786	if (len < HEADERLEN \|\| len > plen) {
DieterGraef	0:d26c1b55cfca	1787	return 0;
DieterGraef	0:d26c1b55cfca	1788	}
DieterGraef	0:d26c1b55cfca	1789
DieterGraef	0:d26c1b55cfca	1790	if (code >= 1 && code <= sizeof(lcp_codenames) / sizeof(char *)) {
DieterGraef	0:d26c1b55cfca	1791	printer(arg, " %s", lcp_codenames[code-1]);
DieterGraef	0:d26c1b55cfca	1792	} else {
DieterGraef	0:d26c1b55cfca	1793	printer(arg, " code=0x%x", code);
DieterGraef	0:d26c1b55cfca	1794	}
DieterGraef	0:d26c1b55cfca	1795	printer(arg, " id=0x%x", id);
DieterGraef	0:d26c1b55cfca	1796	len -= HEADERLEN;
DieterGraef	0:d26c1b55cfca	1797	switch (code) {
DieterGraef	0:d26c1b55cfca	1798	case CONFREQ:
DieterGraef	0:d26c1b55cfca	1799	case CONFACK:
DieterGraef	0:d26c1b55cfca	1800	case CONFNAK:
DieterGraef	0:d26c1b55cfca	1801	case CONFREJ:
DieterGraef	0:d26c1b55cfca	1802	/* print option list */
DieterGraef	0:d26c1b55cfca	1803	while (len >= 2) {
DieterGraef	0:d26c1b55cfca	1804	GETCHAR(code, p);
DieterGraef	0:d26c1b55cfca	1805	GETCHAR(olen, p);
DieterGraef	0:d26c1b55cfca	1806	p -= 2;
DieterGraef	0:d26c1b55cfca	1807	if (olen < 2 \|\| olen > len) {
DieterGraef	0:d26c1b55cfca	1808	break;
DieterGraef	0:d26c1b55cfca	1809	}
DieterGraef	0:d26c1b55cfca	1810	printer(arg, " <");
DieterGraef	0:d26c1b55cfca	1811	len -= olen;
DieterGraef	0:d26c1b55cfca	1812	optend = p + olen;
DieterGraef	0:d26c1b55cfca	1813	switch (code) {
DieterGraef	0:d26c1b55cfca	1814	case CI_MRU:
DieterGraef	0:d26c1b55cfca	1815	if (olen == CILEN_SHORT) {
DieterGraef	0:d26c1b55cfca	1816	p += 2;
DieterGraef	0:d26c1b55cfca	1817	GETSHORT(cishort, p);
DieterGraef	0:d26c1b55cfca	1818	printer(arg, "mru %d", cishort);
DieterGraef	0:d26c1b55cfca	1819	}
DieterGraef	0:d26c1b55cfca	1820	break;
DieterGraef	0:d26c1b55cfca	1821	case CI_ASYNCMAP:
DieterGraef	0:d26c1b55cfca	1822	if (olen == CILEN_LONG) {
DieterGraef	0:d26c1b55cfca	1823	p += 2;
DieterGraef	0:d26c1b55cfca	1824	GETLONG(cilong, p);
DieterGraef	0:d26c1b55cfca	1825	printer(arg, "asyncmap 0x%lx", cilong);
DieterGraef	0:d26c1b55cfca	1826	}
DieterGraef	0:d26c1b55cfca	1827	break;
DieterGraef	0:d26c1b55cfca	1828	case CI_AUTHTYPE:
DieterGraef	0:d26c1b55cfca	1829	if (olen >= CILEN_SHORT) {
DieterGraef	0:d26c1b55cfca	1830	p += 2;
DieterGraef	0:d26c1b55cfca	1831	printer(arg, "auth ");
DieterGraef	0:d26c1b55cfca	1832	GETSHORT(cishort, p);
DieterGraef	0:d26c1b55cfca	1833	switch (cishort) {
DieterGraef	0:d26c1b55cfca	1834	case PPP_PAP:
DieterGraef	0:d26c1b55cfca	1835	printer(arg, "pap");
DieterGraef	0:d26c1b55cfca	1836	break;
DieterGraef	0:d26c1b55cfca	1837	case PPP_CHAP:
DieterGraef	0:d26c1b55cfca	1838	printer(arg, "chap");
DieterGraef	0:d26c1b55cfca	1839	break;
DieterGraef	0:d26c1b55cfca	1840	default:
DieterGraef	0:d26c1b55cfca	1841	printer(arg, "0x%x", cishort);
DieterGraef	0:d26c1b55cfca	1842	}
DieterGraef	0:d26c1b55cfca	1843	}
DieterGraef	0:d26c1b55cfca	1844	break;
DieterGraef	0:d26c1b55cfca	1845	case CI_QUALITY:
DieterGraef	0:d26c1b55cfca	1846	if (olen >= CILEN_SHORT) {
DieterGraef	0:d26c1b55cfca	1847	p += 2;
DieterGraef	0:d26c1b55cfca	1848	printer(arg, "quality ");
DieterGraef	0:d26c1b55cfca	1849	GETSHORT(cishort, p);
DieterGraef	0:d26c1b55cfca	1850	switch (cishort) {
DieterGraef	0:d26c1b55cfca	1851	case PPP_LQR:
DieterGraef	0:d26c1b55cfca	1852	printer(arg, "lqr");
DieterGraef	0:d26c1b55cfca	1853	break;
DieterGraef	0:d26c1b55cfca	1854	default:
DieterGraef	0:d26c1b55cfca	1855	printer(arg, "0x%x", cishort);
DieterGraef	0:d26c1b55cfca	1856	}
DieterGraef	0:d26c1b55cfca	1857	}
DieterGraef	0:d26c1b55cfca	1858	break;
DieterGraef	0:d26c1b55cfca	1859	case CI_CALLBACK:
DieterGraef	0:d26c1b55cfca	1860	if (olen >= CILEN_CHAR) {
DieterGraef	0:d26c1b55cfca	1861	p += 2;
DieterGraef	0:d26c1b55cfca	1862	printer(arg, "callback ");
DieterGraef	0:d26c1b55cfca	1863	GETSHORT(cishort, p);
DieterGraef	0:d26c1b55cfca	1864	switch (cishort) {
DieterGraef	0:d26c1b55cfca	1865	case CBCP_OPT:
DieterGraef	0:d26c1b55cfca	1866	printer(arg, "CBCP");
DieterGraef	0:d26c1b55cfca	1867	break;
DieterGraef	0:d26c1b55cfca	1868	default:
DieterGraef	0:d26c1b55cfca	1869	printer(arg, "0x%x", cishort);
DieterGraef	0:d26c1b55cfca	1870	}
DieterGraef	0:d26c1b55cfca	1871	}
DieterGraef	0:d26c1b55cfca	1872	break;
DieterGraef	0:d26c1b55cfca	1873	case CI_MAGICNUMBER:
DieterGraef	0:d26c1b55cfca	1874	if (olen == CILEN_LONG) {
DieterGraef	0:d26c1b55cfca	1875	p += 2;
DieterGraef	0:d26c1b55cfca	1876	GETLONG(cilong, p);
DieterGraef	0:d26c1b55cfca	1877	printer(arg, "magic 0x%x", cilong);
DieterGraef	0:d26c1b55cfca	1878	}
DieterGraef	0:d26c1b55cfca	1879	break;
DieterGraef	0:d26c1b55cfca	1880	case CI_PCOMPRESSION:
DieterGraef	0:d26c1b55cfca	1881	if (olen == CILEN_VOID) {
DieterGraef	0:d26c1b55cfca	1882	p += 2;
DieterGraef	0:d26c1b55cfca	1883	printer(arg, "pcomp");
DieterGraef	0:d26c1b55cfca	1884	}
DieterGraef	0:d26c1b55cfca	1885	break;
DieterGraef	0:d26c1b55cfca	1886	case CI_ACCOMPRESSION:
DieterGraef	0:d26c1b55cfca	1887	if (olen == CILEN_VOID) {
DieterGraef	0:d26c1b55cfca	1888	p += 2;
DieterGraef	0:d26c1b55cfca	1889	printer(arg, "accomp");
DieterGraef	0:d26c1b55cfca	1890	}
DieterGraef	0:d26c1b55cfca	1891	break;
DieterGraef	0:d26c1b55cfca	1892	}
DieterGraef	0:d26c1b55cfca	1893	while (p < optend) {
DieterGraef	0:d26c1b55cfca	1894	GETCHAR(code, p);
DieterGraef	0:d26c1b55cfca	1895	printer(arg, " %.2x", code);
DieterGraef	0:d26c1b55cfca	1896	}
DieterGraef	0:d26c1b55cfca	1897	printer(arg, ">");
DieterGraef	0:d26c1b55cfca	1898	}
DieterGraef	0:d26c1b55cfca	1899	break;
DieterGraef	0:d26c1b55cfca	1900
DieterGraef	0:d26c1b55cfca	1901	case TERMACK:
DieterGraef	0:d26c1b55cfca	1902	case TERMREQ:
DieterGraef	0:d26c1b55cfca	1903	if (len > 0 && p >= ' ' && p < 0x7f) {
DieterGraef	0:d26c1b55cfca	1904	printer(arg, " ");
DieterGraef	0:d26c1b55cfca	1905	print_string((char*)p, len, printer, arg);
DieterGraef	0:d26c1b55cfca	1906	p += len;
DieterGraef	0:d26c1b55cfca	1907	len = 0;
DieterGraef	0:d26c1b55cfca	1908	}
DieterGraef	0:d26c1b55cfca	1909	break;
DieterGraef	0:d26c1b55cfca	1910
DieterGraef	0:d26c1b55cfca	1911	case ECHOREQ:
DieterGraef	0:d26c1b55cfca	1912	case ECHOREP:
DieterGraef	0:d26c1b55cfca	1913	case DISCREQ:
DieterGraef	0:d26c1b55cfca	1914	if (len >= 4) {
DieterGraef	0:d26c1b55cfca	1915	GETLONG(cilong, p);
DieterGraef	0:d26c1b55cfca	1916	printer(arg, " magic=0x%x", cilong);
DieterGraef	0:d26c1b55cfca	1917	p += 4;
DieterGraef	0:d26c1b55cfca	1918	len -= 4;
DieterGraef	0:d26c1b55cfca	1919	}
DieterGraef	0:d26c1b55cfca	1920	break;
DieterGraef	0:d26c1b55cfca	1921	}
DieterGraef	0:d26c1b55cfca	1922
DieterGraef	0:d26c1b55cfca	1923	/* print the rest of the bytes in the packet */
DieterGraef	0:d26c1b55cfca	1924	for (; len > 0; --len) {
DieterGraef	0:d26c1b55cfca	1925	GETCHAR(code, p);
DieterGraef	0:d26c1b55cfca	1926	printer(arg, " %.2x", code);
DieterGraef	0:d26c1b55cfca	1927	}
DieterGraef	0:d26c1b55cfca	1928
DieterGraef	0:d26c1b55cfca	1929	return (int)(p - pstart);
DieterGraef	0:d26c1b55cfca	1930	}
DieterGraef	0:d26c1b55cfca	1931	#endif /* PPP_ADDITIONAL_CALLBACKS */
DieterGraef	0:d26c1b55cfca	1932
DieterGraef	0:d26c1b55cfca	1933	/*
DieterGraef	0:d26c1b55cfca	1934	* Time to shut down the link because there is nothing out there.
DieterGraef	0:d26c1b55cfca	1935	*/
DieterGraef	0:d26c1b55cfca	1936	static void
DieterGraef	0:d26c1b55cfca	1937	LcpLinkFailure (fsm *f)
DieterGraef	0:d26c1b55cfca	1938	{
DieterGraef	0:d26c1b55cfca	1939	if (f->state == LS_OPENED) {
DieterGraef	0:d26c1b55cfca	1940	LCPDEBUG(LOG_INFO, ("No response to %d echo-requests\n", lcp_echos_pending));
DieterGraef	0:d26c1b55cfca	1941	LCPDEBUG(LOG_NOTICE, ("Serial link appears to be disconnected.\n"));
DieterGraef	0:d26c1b55cfca	1942	lcp_close(f->unit, "Peer not responding");
DieterGraef	0:d26c1b55cfca	1943	}
DieterGraef	0:d26c1b55cfca	1944	}
DieterGraef	0:d26c1b55cfca	1945
DieterGraef	0:d26c1b55cfca	1946	/*
DieterGraef	0:d26c1b55cfca	1947	* Timer expired for the LCP echo requests from this process.
DieterGraef	0:d26c1b55cfca	1948	*/
DieterGraef	0:d26c1b55cfca	1949	static void
DieterGraef	0:d26c1b55cfca	1950	LcpEchoCheck (fsm *f)
DieterGraef	0:d26c1b55cfca	1951	{
DieterGraef	0:d26c1b55cfca	1952	LcpSendEchoRequest (f);
DieterGraef	0:d26c1b55cfca	1953
DieterGraef	0:d26c1b55cfca	1954	/*
DieterGraef	0:d26c1b55cfca	1955	* Start the timer for the next interval.
DieterGraef	0:d26c1b55cfca	1956	*/
DieterGraef	0:d26c1b55cfca	1957	LWIP_ASSERT("lcp_echo_timer_running == 0", lcp_echo_timer_running == 0);
DieterGraef	0:d26c1b55cfca	1958
DieterGraef	0:d26c1b55cfca	1959	TIMEOUT (LcpEchoTimeout, f, lcp_echo_interval);
DieterGraef	0:d26c1b55cfca	1960	lcp_echo_timer_running = 1;
DieterGraef	0:d26c1b55cfca	1961	}
DieterGraef	0:d26c1b55cfca	1962
DieterGraef	0:d26c1b55cfca	1963	/*
DieterGraef	0:d26c1b55cfca	1964	* LcpEchoTimeout - Timer expired on the LCP echo
DieterGraef	0:d26c1b55cfca	1965	*/
DieterGraef	0:d26c1b55cfca	1966	static void
DieterGraef	0:d26c1b55cfca	1967	LcpEchoTimeout (void *arg)
DieterGraef	0:d26c1b55cfca	1968	{
DieterGraef	0:d26c1b55cfca	1969	if (lcp_echo_timer_running != 0) {
DieterGraef	0:d26c1b55cfca	1970	lcp_echo_timer_running = 0;
DieterGraef	0:d26c1b55cfca	1971	LcpEchoCheck ((fsm *) arg);
DieterGraef	0:d26c1b55cfca	1972	}
DieterGraef	0:d26c1b55cfca	1973	}
DieterGraef	0:d26c1b55cfca	1974
DieterGraef	0:d26c1b55cfca	1975	/*
DieterGraef	0:d26c1b55cfca	1976	* LcpEchoReply - LCP has received a reply to the echo
DieterGraef	0:d26c1b55cfca	1977	*/
DieterGraef	0:d26c1b55cfca	1978	static void
DieterGraef	0:d26c1b55cfca	1979	lcp_received_echo_reply (fsm f, int id, u_char inp, int len)
DieterGraef	0:d26c1b55cfca	1980	{
DieterGraef	0:d26c1b55cfca	1981	u32_t magic;
DieterGraef	0:d26c1b55cfca	1982
DieterGraef	0:d26c1b55cfca	1983	LWIP_UNUSED_ARG(id);
DieterGraef	0:d26c1b55cfca	1984
DieterGraef	0:d26c1b55cfca	1985	/* Check the magic number - don't count replies from ourselves. */
DieterGraef	0:d26c1b55cfca	1986	if (len < 4) {
DieterGraef	0:d26c1b55cfca	1987	LCPDEBUG(LOG_WARNING, ("lcp: received short Echo-Reply, length %d\n", len));
DieterGraef	0:d26c1b55cfca	1988	return;
DieterGraef	0:d26c1b55cfca	1989	}
DieterGraef	0:d26c1b55cfca	1990	GETLONG(magic, inp);
DieterGraef	0:d26c1b55cfca	1991	if (lcp_gotoptions[f->unit].neg_magicnumber && magic == lcp_gotoptions[f->unit].magicnumber) {
DieterGraef	0:d26c1b55cfca	1992	LCPDEBUG(LOG_WARNING, ("appear to have received our own echo-reply!\n"));
DieterGraef	0:d26c1b55cfca	1993	return;
DieterGraef	0:d26c1b55cfca	1994	}
DieterGraef	0:d26c1b55cfca	1995
DieterGraef	0:d26c1b55cfca	1996	/* Reset the number of outstanding echo frames */
DieterGraef	0:d26c1b55cfca	1997	lcp_echos_pending = 0;
DieterGraef	0:d26c1b55cfca	1998	}
DieterGraef	0:d26c1b55cfca	1999
DieterGraef	0:d26c1b55cfca	2000	/*
DieterGraef	0:d26c1b55cfca	2001	* LcpSendEchoRequest - Send an echo request frame to the peer
DieterGraef	0:d26c1b55cfca	2002	*/
DieterGraef	0:d26c1b55cfca	2003	static void
DieterGraef	0:d26c1b55cfca	2004	LcpSendEchoRequest (fsm *f)
DieterGraef	0:d26c1b55cfca	2005	{
DieterGraef	0:d26c1b55cfca	2006	u32_t lcp_magic;
DieterGraef	0:d26c1b55cfca	2007	u_char pkt[4], *pktp;
DieterGraef	0:d26c1b55cfca	2008
DieterGraef	0:d26c1b55cfca	2009	/*
DieterGraef	0:d26c1b55cfca	2010	* Detect the failure of the peer at this point.
DieterGraef	0:d26c1b55cfca	2011	*/
DieterGraef	0:d26c1b55cfca	2012	if (lcp_echo_fails != 0) {
DieterGraef	0:d26c1b55cfca	2013	if (lcp_echos_pending >= lcp_echo_fails) {
DieterGraef	0:d26c1b55cfca	2014	LcpLinkFailure(f);
DieterGraef	0:d26c1b55cfca	2015	lcp_echos_pending = 0;
DieterGraef	0:d26c1b55cfca	2016	}
DieterGraef	0:d26c1b55cfca	2017	}
DieterGraef	0:d26c1b55cfca	2018
DieterGraef	0:d26c1b55cfca	2019	/*
DieterGraef	0:d26c1b55cfca	2020	* Make and send the echo request frame.
DieterGraef	0:d26c1b55cfca	2021	*/
DieterGraef	0:d26c1b55cfca	2022	if (f->state == LS_OPENED) {
DieterGraef	0:d26c1b55cfca	2023	lcp_magic = lcp_gotoptions[f->unit].magicnumber;
DieterGraef	0:d26c1b55cfca	2024	pktp = pkt;
DieterGraef	0:d26c1b55cfca	2025	PUTLONG(lcp_magic, pktp);
DieterGraef	0:d26c1b55cfca	2026	fsm_sdata(f, ECHOREQ, (u_char)(lcp_echo_number++ & 0xFF), pkt, (int)(pktp - pkt));
DieterGraef	0:d26c1b55cfca	2027	++lcp_echos_pending;
DieterGraef	0:d26c1b55cfca	2028	}
DieterGraef	0:d26c1b55cfca	2029	}
DieterGraef	0:d26c1b55cfca	2030
DieterGraef	0:d26c1b55cfca	2031	/*
DieterGraef	0:d26c1b55cfca	2032	* lcp_echo_lowerup - Start the timer for the LCP frame
DieterGraef	0:d26c1b55cfca	2033	*/
DieterGraef	0:d26c1b55cfca	2034
DieterGraef	0:d26c1b55cfca	2035	static void
DieterGraef	0:d26c1b55cfca	2036	lcp_echo_lowerup (int unit)
DieterGraef	0:d26c1b55cfca	2037	{
DieterGraef	0:d26c1b55cfca	2038	fsm *f = &lcp_fsm[unit];
DieterGraef	0:d26c1b55cfca	2039
DieterGraef	0:d26c1b55cfca	2040	/* Clear the parameters for generating echo frames */
DieterGraef	0:d26c1b55cfca	2041	lcp_echos_pending = 0;
DieterGraef	0:d26c1b55cfca	2042	lcp_echo_number = 0;
DieterGraef	0:d26c1b55cfca	2043	lcp_echo_timer_running = 0;
DieterGraef	0:d26c1b55cfca	2044
DieterGraef	0:d26c1b55cfca	2045	/* If a timeout interval is specified then start the timer */
DieterGraef	0:d26c1b55cfca	2046	if (lcp_echo_interval != 0) {
DieterGraef	0:d26c1b55cfca	2047	LcpEchoCheck (f);
DieterGraef	0:d26c1b55cfca	2048	}
DieterGraef	0:d26c1b55cfca	2049	}
DieterGraef	0:d26c1b55cfca	2050
DieterGraef	0:d26c1b55cfca	2051	/*
DieterGraef	0:d26c1b55cfca	2052	* lcp_echo_lowerdown - Stop the timer for the LCP frame
DieterGraef	0:d26c1b55cfca	2053	*/
DieterGraef	0:d26c1b55cfca	2054
DieterGraef	0:d26c1b55cfca	2055	static void
DieterGraef	0:d26c1b55cfca	2056	lcp_echo_lowerdown (int unit)
DieterGraef	0:d26c1b55cfca	2057	{
DieterGraef	0:d26c1b55cfca	2058	fsm *f = &lcp_fsm[unit];
DieterGraef	0:d26c1b55cfca	2059
DieterGraef	0:d26c1b55cfca	2060	if (lcp_echo_timer_running != 0) {
DieterGraef	0:d26c1b55cfca	2061	UNTIMEOUT (LcpEchoTimeout, f);
DieterGraef	0:d26c1b55cfca	2062	lcp_echo_timer_running = 0;
DieterGraef	0:d26c1b55cfca	2063	}
DieterGraef	0:d26c1b55cfca	2064	}
DieterGraef	0:d26c1b55cfca	2065
DieterGraef	0:d26c1b55cfca	2066	#endif /* PPP_SUPPORT */

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Type:	Library
Created:	18 Nov 2016
Imports:	3
Forks:	0
Commits:	3
Dependents:	0
Dependencies:	0
Followers:	1

The code in this repository is Apache licensed.

lwip/netif/ppp/lcp.c@0:d26c1b55cfca, 2016-06-19 (annotated)

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