NetServicesMod - Modified version of NetServices. Fixes an issue w…

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Modified version of NetServices. Fixes an issue where connections failed should the HTTP response status line be received in a packet on its own prior to any further headers. Changes are made to the HTTPClient.cpp file's readHeaders method.

lwip/netif/ppp/lcp.c@0:ec559500a63f, 2011-04-08 (annotated)

Committer:: andrewbonney
Date:: Fri Apr 08 14:39:41 2011 +0000
Revision:: 0:ec559500a63f

Who changed what in which revision?

User	Revision	Line number	New contents of line
andrewbonney	0:ec559500a63f	1	/*****************************************************************************
andrewbonney	0:ec559500a63f	2	* lcp.c - Network Link Control Protocol program file.
andrewbonney	0:ec559500a63f	3	*
andrewbonney	0:ec559500a63f	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
andrewbonney	0:ec559500a63f	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
andrewbonney	0:ec559500a63f	6	*
andrewbonney	0:ec559500a63f	7	* The authors hereby grant permission to use, copy, modify, distribute,
andrewbonney	0:ec559500a63f	8	* and license this software and its documentation for any purpose, provided
andrewbonney	0:ec559500a63f	9	* that existing copyright notices are retained in all copies and that this
andrewbonney	0:ec559500a63f	10	* notice and the following disclaimer are included verbatim in any
andrewbonney	0:ec559500a63f	11	* distributions. No written agreement, license, or royalty fee is required
andrewbonney	0:ec559500a63f	12	* for any of the authorized uses.
andrewbonney	0:ec559500a63f	13	*
andrewbonney	0:ec559500a63f	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
andrewbonney	0:ec559500a63f	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
andrewbonney	0:ec559500a63f	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
andrewbonney	0:ec559500a63f	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
andrewbonney	0:ec559500a63f	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
andrewbonney	0:ec559500a63f	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
andrewbonney	0:ec559500a63f	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
andrewbonney	0:ec559500a63f	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
andrewbonney	0:ec559500a63f	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
andrewbonney	0:ec559500a63f	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
andrewbonney	0:ec559500a63f	24	*
andrewbonney	0:ec559500a63f	25	******************************************************************************
andrewbonney	0:ec559500a63f	26	* REVISION HISTORY
andrewbonney	0:ec559500a63f	27	*
andrewbonney	0:ec559500a63f	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
andrewbonney	0:ec559500a63f	29	* Ported to lwIP.
andrewbonney	0:ec559500a63f	30	* 97-12-01 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
andrewbonney	0:ec559500a63f	31	* Original.
andrewbonney	0:ec559500a63f	32	*****************************************************************************/
andrewbonney	0:ec559500a63f	33
andrewbonney	0:ec559500a63f	34	/*
andrewbonney	0:ec559500a63f	35	* lcp.c - PPP Link Control Protocol.
andrewbonney	0:ec559500a63f	36	*
andrewbonney	0:ec559500a63f	37	* Copyright (c) 1989 Carnegie Mellon University.
andrewbonney	0:ec559500a63f	38	* All rights reserved.
andrewbonney	0:ec559500a63f	39	*
andrewbonney	0:ec559500a63f	40	* Redistribution and use in source and binary forms are permitted
andrewbonney	0:ec559500a63f	41	* provided that the above copyright notice and this paragraph are
andrewbonney	0:ec559500a63f	42	* duplicated in all such forms and that any documentation,
andrewbonney	0:ec559500a63f	43	* advertising materials, and other materials related to such
andrewbonney	0:ec559500a63f	44	* distribution and use acknowledge that the software was developed
andrewbonney	0:ec559500a63f	45	* by Carnegie Mellon University. The name of the
andrewbonney	0:ec559500a63f	46	* University may not be used to endorse or promote products derived
andrewbonney	0:ec559500a63f	47	* from this software without specific prior written permission.
andrewbonney	0:ec559500a63f	48	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
andrewbonney	0:ec559500a63f	49	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
andrewbonney	0:ec559500a63f	50	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
andrewbonney	0:ec559500a63f	51	*/
andrewbonney	0:ec559500a63f	52
andrewbonney	0:ec559500a63f	53
andrewbonney	0:ec559500a63f	54	#include "lwip/opt.h"
andrewbonney	0:ec559500a63f	55
andrewbonney	0:ec559500a63f	56	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
andrewbonney	0:ec559500a63f	57
andrewbonney	0:ec559500a63f	58	#include "ppp.h"
andrewbonney	0:ec559500a63f	59	#include "pppdebug.h"
andrewbonney	0:ec559500a63f	60
andrewbonney	0:ec559500a63f	61	#include "fsm.h"
andrewbonney	0:ec559500a63f	62	#include "chap.h"
andrewbonney	0:ec559500a63f	63	#include "magic.h"
andrewbonney	0:ec559500a63f	64	#include "auth.h"
andrewbonney	0:ec559500a63f	65	#include "lcp.h"
andrewbonney	0:ec559500a63f	66
andrewbonney	0:ec559500a63f	67	#include <string.h>
andrewbonney	0:ec559500a63f	68
andrewbonney	0:ec559500a63f	69	#if PPPOE_SUPPORT
andrewbonney	0:ec559500a63f	70	#include "netif/ppp_oe.h"
andrewbonney	0:ec559500a63f	71	#else
andrewbonney	0:ec559500a63f	72	#define PPPOE_MAXMTU PPP_MAXMRU
andrewbonney	0:ec559500a63f	73	#endif
andrewbonney	0:ec559500a63f	74
andrewbonney	0:ec559500a63f	75	#if 0 /* UNUSED */
andrewbonney	0:ec559500a63f	76	/*
andrewbonney	0:ec559500a63f	77	* LCP-related command-line options.
andrewbonney	0:ec559500a63f	78	*/
andrewbonney	0:ec559500a63f	79	int lcp_echo_interval = 0; /* Interval between LCP echo-requests */
andrewbonney	0:ec559500a63f	80	int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */
andrewbonney	0:ec559500a63f	81	bool lax_recv = 0; /* accept control chars in asyncmap */
andrewbonney	0:ec559500a63f	82
andrewbonney	0:ec559500a63f	83	static int setescape (char **);
andrewbonney	0:ec559500a63f	84
andrewbonney	0:ec559500a63f	85	static option_t lcp_option_list[] = {
andrewbonney	0:ec559500a63f	86	/* LCP options */
andrewbonney	0:ec559500a63f	87	/* list stripped for simplicity */
andrewbonney	0:ec559500a63f	88	{NULL}
andrewbonney	0:ec559500a63f	89	};
andrewbonney	0:ec559500a63f	90	#endif /* UNUSED */
andrewbonney	0:ec559500a63f	91
andrewbonney	0:ec559500a63f	92	/* options */
andrewbonney	0:ec559500a63f	93	LinkPhase lcp_phase[NUM_PPP]; /* Phase of link session (RFC 1661) */
andrewbonney	0:ec559500a63f	94	static u_int lcp_echo_interval = LCP_ECHOINTERVAL; /* Interval between LCP echo-requests */
andrewbonney	0:ec559500a63f	95	static u_int lcp_echo_fails = LCP_MAXECHOFAILS; /* Tolerance to unanswered echo-requests */
andrewbonney	0:ec559500a63f	96
andrewbonney	0:ec559500a63f	97	/* global vars */
andrewbonney	0:ec559500a63f	98	static fsm lcp_fsm[NUM_PPP]; /* LCP fsm structure (global)*/
andrewbonney	0:ec559500a63f	99	lcp_options lcp_wantoptions[NUM_PPP]; /* Options that we want to request */
andrewbonney	0:ec559500a63f	100	lcp_options lcp_gotoptions[NUM_PPP]; /* Options that peer ack'd */
andrewbonney	0:ec559500a63f	101	lcp_options lcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */
andrewbonney	0:ec559500a63f	102	lcp_options lcp_hisoptions[NUM_PPP]; /* Options that we ack'd */
andrewbonney	0:ec559500a63f	103	ext_accm xmit_accm[NUM_PPP]; /* extended transmit ACCM */
andrewbonney	0:ec559500a63f	104
andrewbonney	0:ec559500a63f	105	static u32_t lcp_echos_pending = 0; /* Number of outstanding echo msgs */
andrewbonney	0:ec559500a63f	106	static u32_t lcp_echo_number = 0; /* ID number of next echo frame */
andrewbonney	0:ec559500a63f	107	static u32_t lcp_echo_timer_running = 0; /* TRUE if a timer is running */
andrewbonney	0:ec559500a63f	108
andrewbonney	0:ec559500a63f	109	/* @todo: do we really need such a large buffer? The typical 1500 bytes seem too much. */
andrewbonney	0:ec559500a63f	110	static u_char nak_buffer[PPP_MRU]; /* where we construct a nak packet */
andrewbonney	0:ec559500a63f	111
andrewbonney	0:ec559500a63f	112	/*
andrewbonney	0:ec559500a63f	113	* Callbacks for fsm code. (CI = Configuration Information)
andrewbonney	0:ec559500a63f	114	*/
andrewbonney	0:ec559500a63f	115	static void lcp_resetci (fsm); / Reset our CI */
andrewbonney	0:ec559500a63f	116	static int lcp_cilen (fsm); / Return length of our CI */
andrewbonney	0:ec559500a63f	117	static void lcp_addci (fsm, u_char, int); / Add our CI to pkt */
andrewbonney	0:ec559500a63f	118	static int lcp_ackci (fsm, u_char, int); /* Peer ack'd our CI */
andrewbonney	0:ec559500a63f	119	static int lcp_nakci (fsm, u_char, int); /* Peer nak'd our CI */
andrewbonney	0:ec559500a63f	120	static int lcp_rejci (fsm, u_char, int); /* Peer rej'd our CI */
andrewbonney	0:ec559500a63f	121	static int lcp_reqci (fsm, u_char, int, int); / Rcv peer CI */
andrewbonney	0:ec559500a63f	122	static void lcp_up (fsm); / We're UP */
andrewbonney	0:ec559500a63f	123	static void lcp_down (fsm); / We're DOWN */
andrewbonney	0:ec559500a63f	124	static void lcp_starting (fsm); / We need lower layer up */
andrewbonney	0:ec559500a63f	125	static void lcp_finished (fsm); / We need lower layer down */
andrewbonney	0:ec559500a63f	126	static int lcp_extcode (fsm, int, u_char, u_char, int);
andrewbonney	0:ec559500a63f	127	static void lcp_rprotrej (fsm, u_char, int);
andrewbonney	0:ec559500a63f	128
andrewbonney	0:ec559500a63f	129	/*
andrewbonney	0:ec559500a63f	130	* routines to send LCP echos to peer
andrewbonney	0:ec559500a63f	131	*/
andrewbonney	0:ec559500a63f	132
andrewbonney	0:ec559500a63f	133	static void lcp_echo_lowerup (int);
andrewbonney	0:ec559500a63f	134	static void lcp_echo_lowerdown (int);
andrewbonney	0:ec559500a63f	135	static void LcpEchoTimeout (void*);
andrewbonney	0:ec559500a63f	136	static void lcp_received_echo_reply (fsm, int, u_char, int);
andrewbonney	0:ec559500a63f	137	static void LcpSendEchoRequest (fsm*);
andrewbonney	0:ec559500a63f	138	static void LcpLinkFailure (fsm*);
andrewbonney	0:ec559500a63f	139	static void LcpEchoCheck (fsm*);
andrewbonney	0:ec559500a63f	140
andrewbonney	0:ec559500a63f	141	static fsm_callbacks lcp_callbacks = { /* LCP callback routines */
andrewbonney	0:ec559500a63f	142	lcp_resetci, /* Reset our Configuration Information */
andrewbonney	0:ec559500a63f	143	lcp_cilen, /* Length of our Configuration Information */
andrewbonney	0:ec559500a63f	144	lcp_addci, /* Add our Configuration Information */
andrewbonney	0:ec559500a63f	145	lcp_ackci, /* ACK our Configuration Information */
andrewbonney	0:ec559500a63f	146	lcp_nakci, /* NAK our Configuration Information */
andrewbonney	0:ec559500a63f	147	lcp_rejci, /* Reject our Configuration Information */
andrewbonney	0:ec559500a63f	148	lcp_reqci, /* Request peer's Configuration Information */
andrewbonney	0:ec559500a63f	149	lcp_up, /* Called when fsm reaches LS_OPENED state */
andrewbonney	0:ec559500a63f	150	lcp_down, /* Called when fsm leaves LS_OPENED state */
andrewbonney	0:ec559500a63f	151	lcp_starting, /* Called when we want the lower layer up */
andrewbonney	0:ec559500a63f	152	lcp_finished, /* Called when we want the lower layer down */
andrewbonney	0:ec559500a63f	153	NULL, /* Called when Protocol-Reject received */
andrewbonney	0:ec559500a63f	154	NULL, /* Retransmission is necessary */
andrewbonney	0:ec559500a63f	155	lcp_extcode, /* Called to handle LCP-specific codes */
andrewbonney	0:ec559500a63f	156	"LCP" /* String name of protocol */
andrewbonney	0:ec559500a63f	157	};
andrewbonney	0:ec559500a63f	158
andrewbonney	0:ec559500a63f	159	/*
andrewbonney	0:ec559500a63f	160	* Protocol entry points.
andrewbonney	0:ec559500a63f	161	* Some of these are called directly.
andrewbonney	0:ec559500a63f	162	*/
andrewbonney	0:ec559500a63f	163
andrewbonney	0:ec559500a63f	164	static void lcp_input (int, u_char *, int);
andrewbonney	0:ec559500a63f	165	static void lcp_protrej (int);
andrewbonney	0:ec559500a63f	166
andrewbonney	0:ec559500a63f	167	struct protent lcp_protent = {
andrewbonney	0:ec559500a63f	168	PPP_LCP,
andrewbonney	0:ec559500a63f	169	lcp_init,
andrewbonney	0:ec559500a63f	170	lcp_input,
andrewbonney	0:ec559500a63f	171	lcp_protrej,
andrewbonney	0:ec559500a63f	172	lcp_lowerup,
andrewbonney	0:ec559500a63f	173	lcp_lowerdown,
andrewbonney	0:ec559500a63f	174	lcp_open,
andrewbonney	0:ec559500a63f	175	lcp_close,
andrewbonney	0:ec559500a63f	176	#if PPP_ADDITIONAL_CALLBACKS
andrewbonney	0:ec559500a63f	177	lcp_printpkt,
andrewbonney	0:ec559500a63f	178	NULL,
andrewbonney	0:ec559500a63f	179	#endif /* PPP_ADDITIONAL_CALLBACKS */
andrewbonney	0:ec559500a63f	180	1,
andrewbonney	0:ec559500a63f	181	"LCP",
andrewbonney	0:ec559500a63f	182	#if PPP_ADDITIONAL_CALLBACKS
andrewbonney	0:ec559500a63f	183	NULL,
andrewbonney	0:ec559500a63f	184	NULL,
andrewbonney	0:ec559500a63f	185	NULL
andrewbonney	0:ec559500a63f	186	#endif /* PPP_ADDITIONAL_CALLBACKS */
andrewbonney	0:ec559500a63f	187	};
andrewbonney	0:ec559500a63f	188
andrewbonney	0:ec559500a63f	189	int lcp_loopbackfail = DEFLOOPBACKFAIL;
andrewbonney	0:ec559500a63f	190
andrewbonney	0:ec559500a63f	191	/*
andrewbonney	0:ec559500a63f	192	* Length of each type of configuration option (in octets)
andrewbonney	0:ec559500a63f	193	*/
andrewbonney	0:ec559500a63f	194	#define CILEN_VOID 2
andrewbonney	0:ec559500a63f	195	#define CILEN_CHAR 3
andrewbonney	0:ec559500a63f	196	#define CILEN_SHORT 4 /* CILEN_VOID + sizeof(short) */
andrewbonney	0:ec559500a63f	197	#define CILEN_CHAP 5 /* CILEN_VOID + sizeof(short) + 1 */
andrewbonney	0:ec559500a63f	198	#define CILEN_LONG 6 /* CILEN_VOID + sizeof(long) */
andrewbonney	0:ec559500a63f	199	#define CILEN_LQR 8 /* CILEN_VOID + sizeof(short) + sizeof(long) */
andrewbonney	0:ec559500a63f	200	#define CILEN_CBCP 3
andrewbonney	0:ec559500a63f	201
andrewbonney	0:ec559500a63f	202	#define CODENAME(x) ((x) == CONFACK ? "ACK" : (x) == CONFNAK ? "NAK" : "REJ")
andrewbonney	0:ec559500a63f	203
andrewbonney	0:ec559500a63f	204	#if 0 /* UNUSED */
andrewbonney	0:ec559500a63f	205	/*
andrewbonney	0:ec559500a63f	206	* setescape - add chars to the set we escape on transmission.
andrewbonney	0:ec559500a63f	207	*/
andrewbonney	0:ec559500a63f	208	static int
andrewbonney	0:ec559500a63f	209	setescape(argv)
andrewbonney	0:ec559500a63f	210	char **argv;
andrewbonney	0:ec559500a63f	211	{
andrewbonney	0:ec559500a63f	212	int n, ret;
andrewbonney	0:ec559500a63f	213	char p, endp;
andrewbonney	0:ec559500a63f	214
andrewbonney	0:ec559500a63f	215	p = *argv;
andrewbonney	0:ec559500a63f	216	ret = 1;
andrewbonney	0:ec559500a63f	217	while (*p) {
andrewbonney	0:ec559500a63f	218	n = strtol(p, &endp, 16);
andrewbonney	0:ec559500a63f	219	if (p == endp) {
andrewbonney	0:ec559500a63f	220	option_error("escape parameter contains invalid hex number '%s'", p);
andrewbonney	0:ec559500a63f	221	return 0;
andrewbonney	0:ec559500a63f	222	}
andrewbonney	0:ec559500a63f	223	p = endp;
andrewbonney	0:ec559500a63f	224	if (n < 0 \|\| n == 0x5E \|\| n > 0xFF) {
andrewbonney	0:ec559500a63f	225	option_error("can't escape character 0x%x", n);
andrewbonney	0:ec559500a63f	226	ret = 0;
andrewbonney	0:ec559500a63f	227	} else
andrewbonney	0:ec559500a63f	228	xmit_accm[0][n >> 5] \|= 1 << (n & 0x1F);
andrewbonney	0:ec559500a63f	229	while (p == ',' \|\| p == ' ')
andrewbonney	0:ec559500a63f	230	++p;
andrewbonney	0:ec559500a63f	231	}
andrewbonney	0:ec559500a63f	232	return ret;
andrewbonney	0:ec559500a63f	233	}
andrewbonney	0:ec559500a63f	234	#endif /* UNUSED */
andrewbonney	0:ec559500a63f	235
andrewbonney	0:ec559500a63f	236	/*
andrewbonney	0:ec559500a63f	237	* lcp_init - Initialize LCP.
andrewbonney	0:ec559500a63f	238	*/
andrewbonney	0:ec559500a63f	239	void
andrewbonney	0:ec559500a63f	240	lcp_init(int unit)
andrewbonney	0:ec559500a63f	241	{
andrewbonney	0:ec559500a63f	242	fsm *f = &lcp_fsm[unit];
andrewbonney	0:ec559500a63f	243	lcp_options *wo = &lcp_wantoptions[unit];
andrewbonney	0:ec559500a63f	244	lcp_options *ao = &lcp_allowoptions[unit];
andrewbonney	0:ec559500a63f	245
andrewbonney	0:ec559500a63f	246	f->unit = unit;
andrewbonney	0:ec559500a63f	247	f->protocol = PPP_LCP;
andrewbonney	0:ec559500a63f	248	f->callbacks = &lcp_callbacks;
andrewbonney	0:ec559500a63f	249
andrewbonney	0:ec559500a63f	250	fsm_init(f);
andrewbonney	0:ec559500a63f	251
andrewbonney	0:ec559500a63f	252	wo->passive = 0;
andrewbonney	0:ec559500a63f	253	wo->silent = 0;
andrewbonney	0:ec559500a63f	254	wo->restart = 0; /* Set to 1 in kernels or multi-line implementations */
andrewbonney	0:ec559500a63f	255	wo->neg_mru = 1;
andrewbonney	0:ec559500a63f	256	wo->mru = PPP_DEFMRU;
andrewbonney	0:ec559500a63f	257	wo->neg_asyncmap = 1;
andrewbonney	0:ec559500a63f	258	wo->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */
andrewbonney	0:ec559500a63f	259	wo->neg_chap = 0; /* Set to 1 on server */
andrewbonney	0:ec559500a63f	260	wo->neg_upap = 0; /* Set to 1 on server */
andrewbonney	0:ec559500a63f	261	wo->chap_mdtype = CHAP_DIGEST_MD5;
andrewbonney	0:ec559500a63f	262	wo->neg_magicnumber = 1;
andrewbonney	0:ec559500a63f	263	wo->neg_pcompression = 1;
andrewbonney	0:ec559500a63f	264	wo->neg_accompression = 1;
andrewbonney	0:ec559500a63f	265	wo->neg_lqr = 0; /* no LQR implementation yet */
andrewbonney	0:ec559500a63f	266	wo->neg_cbcp = 0;
andrewbonney	0:ec559500a63f	267
andrewbonney	0:ec559500a63f	268	ao->neg_mru = 1;
andrewbonney	0:ec559500a63f	269	ao->mru = PPP_MAXMRU;
andrewbonney	0:ec559500a63f	270	ao->neg_asyncmap = 1;
andrewbonney	0:ec559500a63f	271	ao->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */
andrewbonney	0:ec559500a63f	272	ao->neg_chap = (CHAP_SUPPORT != 0);
andrewbonney	0:ec559500a63f	273	ao->chap_mdtype = CHAP_DIGEST_MD5;
andrewbonney	0:ec559500a63f	274	ao->neg_upap = (PAP_SUPPORT != 0);
andrewbonney	0:ec559500a63f	275	ao->neg_magicnumber = 1;
andrewbonney	0:ec559500a63f	276	ao->neg_pcompression = 1;
andrewbonney	0:ec559500a63f	277	ao->neg_accompression = 1;
andrewbonney	0:ec559500a63f	278	ao->neg_lqr = 0; /* no LQR implementation yet */
andrewbonney	0:ec559500a63f	279	ao->neg_cbcp = (CBCP_SUPPORT != 0);
andrewbonney	0:ec559500a63f	280
andrewbonney	0:ec559500a63f	281	/*
andrewbonney	0:ec559500a63f	282	* Set transmit escape for the flag and escape characters plus anything
andrewbonney	0:ec559500a63f	283	* set for the allowable options.
andrewbonney	0:ec559500a63f	284	*/
andrewbonney	0:ec559500a63f	285	memset(xmit_accm[unit], 0, sizeof(xmit_accm[0]));
andrewbonney	0:ec559500a63f	286	xmit_accm[unit][15] = 0x60;
andrewbonney	0:ec559500a63f	287	xmit_accm[unit][0] = (u_char)((ao->asyncmap & 0xFF));
andrewbonney	0:ec559500a63f	288	xmit_accm[unit][1] = (u_char)((ao->asyncmap >> 8) & 0xFF);
andrewbonney	0:ec559500a63f	289	xmit_accm[unit][2] = (u_char)((ao->asyncmap >> 16) & 0xFF);
andrewbonney	0:ec559500a63f	290	xmit_accm[unit][3] = (u_char)((ao->asyncmap >> 24) & 0xFF);
andrewbonney	0:ec559500a63f	291	LCPDEBUG(LOG_INFO, ("lcp_init: xmit_accm=%X %X %X %X\n",
andrewbonney	0:ec559500a63f	292	xmit_accm[unit][0],
andrewbonney	0:ec559500a63f	293	xmit_accm[unit][1],
andrewbonney	0:ec559500a63f	294	xmit_accm[unit][2],
andrewbonney	0:ec559500a63f	295	xmit_accm[unit][3]));
andrewbonney	0:ec559500a63f	296
andrewbonney	0:ec559500a63f	297	lcp_phase[unit] = PHASE_INITIALIZE;
andrewbonney	0:ec559500a63f	298	}
andrewbonney	0:ec559500a63f	299
andrewbonney	0:ec559500a63f	300
andrewbonney	0:ec559500a63f	301	/*
andrewbonney	0:ec559500a63f	302	* lcp_open - LCP is allowed to come up.
andrewbonney	0:ec559500a63f	303	*/
andrewbonney	0:ec559500a63f	304	void
andrewbonney	0:ec559500a63f	305	lcp_open(int unit)
andrewbonney	0:ec559500a63f	306	{
andrewbonney	0:ec559500a63f	307	fsm *f = &lcp_fsm[unit];
andrewbonney	0:ec559500a63f	308	lcp_options *wo = &lcp_wantoptions[unit];
andrewbonney	0:ec559500a63f	309
andrewbonney	0:ec559500a63f	310	f->flags = 0;
andrewbonney	0:ec559500a63f	311	if (wo->passive) {
andrewbonney	0:ec559500a63f	312	f->flags \|= OPT_PASSIVE;
andrewbonney	0:ec559500a63f	313	}
andrewbonney	0:ec559500a63f	314	if (wo->silent) {
andrewbonney	0:ec559500a63f	315	f->flags \|= OPT_SILENT;
andrewbonney	0:ec559500a63f	316	}
andrewbonney	0:ec559500a63f	317	fsm_open(f);
andrewbonney	0:ec559500a63f	318
andrewbonney	0:ec559500a63f	319	lcp_phase[unit] = PHASE_ESTABLISH;
andrewbonney	0:ec559500a63f	320	}
andrewbonney	0:ec559500a63f	321
andrewbonney	0:ec559500a63f	322
andrewbonney	0:ec559500a63f	323	/*
andrewbonney	0:ec559500a63f	324	* lcp_close - Take LCP down.
andrewbonney	0:ec559500a63f	325	*/
andrewbonney	0:ec559500a63f	326	void
andrewbonney	0:ec559500a63f	327	lcp_close(int unit, char *reason)
andrewbonney	0:ec559500a63f	328	{
andrewbonney	0:ec559500a63f	329	fsm *f = &lcp_fsm[unit];
andrewbonney	0:ec559500a63f	330
andrewbonney	0:ec559500a63f	331	if (lcp_phase[unit] != PHASE_DEAD) {
andrewbonney	0:ec559500a63f	332	lcp_phase[unit] = PHASE_TERMINATE;
andrewbonney	0:ec559500a63f	333	}
andrewbonney	0:ec559500a63f	334	if (f->state == LS_STOPPED && f->flags & (OPT_PASSIVE\|OPT_SILENT)) {
andrewbonney	0:ec559500a63f	335	/*
andrewbonney	0:ec559500a63f	336	* This action is not strictly according to the FSM in RFC1548,
andrewbonney	0:ec559500a63f	337	* but it does mean that the program terminates if you do an
andrewbonney	0:ec559500a63f	338	* lcp_close() in passive/silent mode when a connection hasn't
andrewbonney	0:ec559500a63f	339	* been established.
andrewbonney	0:ec559500a63f	340	*/
andrewbonney	0:ec559500a63f	341	f->state = LS_CLOSED;
andrewbonney	0:ec559500a63f	342	lcp_finished(f);
andrewbonney	0:ec559500a63f	343	} else {
andrewbonney	0:ec559500a63f	344	fsm_close(f, reason);
andrewbonney	0:ec559500a63f	345	}
andrewbonney	0:ec559500a63f	346	}
andrewbonney	0:ec559500a63f	347
andrewbonney	0:ec559500a63f	348
andrewbonney	0:ec559500a63f	349	/*
andrewbonney	0:ec559500a63f	350	* lcp_lowerup - The lower layer is up.
andrewbonney	0:ec559500a63f	351	*/
andrewbonney	0:ec559500a63f	352	void
andrewbonney	0:ec559500a63f	353	lcp_lowerup(int unit)
andrewbonney	0:ec559500a63f	354	{
andrewbonney	0:ec559500a63f	355	lcp_options *wo = &lcp_wantoptions[unit];
andrewbonney	0:ec559500a63f	356
andrewbonney	0:ec559500a63f	357	/*
andrewbonney	0:ec559500a63f	358	* Don't use A/C or protocol compression on transmission,
andrewbonney	0:ec559500a63f	359	* but accept A/C and protocol compressed packets
andrewbonney	0:ec559500a63f	360	* if we are going to ask for A/C and protocol compression.
andrewbonney	0:ec559500a63f	361	*/
andrewbonney	0:ec559500a63f	362	ppp_set_xaccm(unit, &xmit_accm[unit]);
andrewbonney	0:ec559500a63f	363	ppp_send_config(unit, PPP_MRU, 0xffffffffl, 0, 0);
andrewbonney	0:ec559500a63f	364	ppp_recv_config(unit, PPP_MRU, 0x00000000l,
andrewbonney	0:ec559500a63f	365	wo->neg_pcompression, wo->neg_accompression);
andrewbonney	0:ec559500a63f	366	peer_mru[unit] = PPP_MRU;
andrewbonney	0:ec559500a63f	367	lcp_allowoptions[unit].asyncmap = (u_long)xmit_accm[unit][0]
andrewbonney	0:ec559500a63f	368	\| ((u_long)xmit_accm[unit][1] << 8)
andrewbonney	0:ec559500a63f	369	\| ((u_long)xmit_accm[unit][2] << 16)
andrewbonney	0:ec559500a63f	370	\| ((u_long)xmit_accm[unit][3] << 24);
andrewbonney	0:ec559500a63f	371	LCPDEBUG(LOG_INFO, ("lcp_lowerup: asyncmap=%X %X %X %X\n",
andrewbonney	0:ec559500a63f	372	xmit_accm[unit][3],
andrewbonney	0:ec559500a63f	373	xmit_accm[unit][2],
andrewbonney	0:ec559500a63f	374	xmit_accm[unit][1],
andrewbonney	0:ec559500a63f	375	xmit_accm[unit][0]));
andrewbonney	0:ec559500a63f	376
andrewbonney	0:ec559500a63f	377	fsm_lowerup(&lcp_fsm[unit]);
andrewbonney	0:ec559500a63f	378	}
andrewbonney	0:ec559500a63f	379
andrewbonney	0:ec559500a63f	380
andrewbonney	0:ec559500a63f	381	/*
andrewbonney	0:ec559500a63f	382	* lcp_lowerdown - The lower layer is down.
andrewbonney	0:ec559500a63f	383	*/
andrewbonney	0:ec559500a63f	384	void
andrewbonney	0:ec559500a63f	385	lcp_lowerdown(int unit)
andrewbonney	0:ec559500a63f	386	{
andrewbonney	0:ec559500a63f	387	fsm_lowerdown(&lcp_fsm[unit]);
andrewbonney	0:ec559500a63f	388	}
andrewbonney	0:ec559500a63f	389
andrewbonney	0:ec559500a63f	390
andrewbonney	0:ec559500a63f	391	/*
andrewbonney	0:ec559500a63f	392	* lcp_input - Input LCP packet.
andrewbonney	0:ec559500a63f	393	*/
andrewbonney	0:ec559500a63f	394	static void
andrewbonney	0:ec559500a63f	395	lcp_input(int unit, u_char *p, int len)
andrewbonney	0:ec559500a63f	396	{
andrewbonney	0:ec559500a63f	397	fsm *f = &lcp_fsm[unit];
andrewbonney	0:ec559500a63f	398
andrewbonney	0:ec559500a63f	399	fsm_input(f, p, len);
andrewbonney	0:ec559500a63f	400	}
andrewbonney	0:ec559500a63f	401
andrewbonney	0:ec559500a63f	402
andrewbonney	0:ec559500a63f	403	/*
andrewbonney	0:ec559500a63f	404	* lcp_extcode - Handle a LCP-specific code.
andrewbonney	0:ec559500a63f	405	*/
andrewbonney	0:ec559500a63f	406	static int
andrewbonney	0:ec559500a63f	407	lcp_extcode(fsm f, int code, u_char id, u_char inp, int len)
andrewbonney	0:ec559500a63f	408	{
andrewbonney	0:ec559500a63f	409	u_char *magp;
andrewbonney	0:ec559500a63f	410
andrewbonney	0:ec559500a63f	411	switch( code ){
andrewbonney	0:ec559500a63f	412	case PROTREJ:
andrewbonney	0:ec559500a63f	413	lcp_rprotrej(f, inp, len);
andrewbonney	0:ec559500a63f	414	break;
andrewbonney	0:ec559500a63f	415
andrewbonney	0:ec559500a63f	416	case ECHOREQ:
andrewbonney	0:ec559500a63f	417	if (f->state != LS_OPENED) {
andrewbonney	0:ec559500a63f	418	break;
andrewbonney	0:ec559500a63f	419	}
andrewbonney	0:ec559500a63f	420	LCPDEBUG(LOG_INFO, ("lcp: Echo-Request, Rcvd id %d\n", id));
andrewbonney	0:ec559500a63f	421	magp = inp;
andrewbonney	0:ec559500a63f	422	PUTLONG(lcp_gotoptions[f->unit].magicnumber, magp);
andrewbonney	0:ec559500a63f	423	fsm_sdata(f, ECHOREP, id, inp, len);
andrewbonney	0:ec559500a63f	424	break;
andrewbonney	0:ec559500a63f	425
andrewbonney	0:ec559500a63f	426	case ECHOREP:
andrewbonney	0:ec559500a63f	427	lcp_received_echo_reply(f, id, inp, len);
andrewbonney	0:ec559500a63f	428	break;
andrewbonney	0:ec559500a63f	429
andrewbonney	0:ec559500a63f	430	case DISCREQ:
andrewbonney	0:ec559500a63f	431	break;
andrewbonney	0:ec559500a63f	432
andrewbonney	0:ec559500a63f	433	default:
andrewbonney	0:ec559500a63f	434	return 0;
andrewbonney	0:ec559500a63f	435	}
andrewbonney	0:ec559500a63f	436	return 1;
andrewbonney	0:ec559500a63f	437	}
andrewbonney	0:ec559500a63f	438
andrewbonney	0:ec559500a63f	439
andrewbonney	0:ec559500a63f	440	/*
andrewbonney	0:ec559500a63f	441	* lcp_rprotrej - Receive an Protocol-Reject.
andrewbonney	0:ec559500a63f	442	*
andrewbonney	0:ec559500a63f	443	* Figure out which protocol is rejected and inform it.
andrewbonney	0:ec559500a63f	444	*/
andrewbonney	0:ec559500a63f	445	static void
andrewbonney	0:ec559500a63f	446	lcp_rprotrej(fsm f, u_char inp, int len)
andrewbonney	0:ec559500a63f	447	{
andrewbonney	0:ec559500a63f	448	int i;
andrewbonney	0:ec559500a63f	449	struct protent *protp;
andrewbonney	0:ec559500a63f	450	u_short prot;
andrewbonney	0:ec559500a63f	451
andrewbonney	0:ec559500a63f	452	if (len < (int)sizeof (u_short)) {
andrewbonney	0:ec559500a63f	453	LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd short Protocol-Reject packet!\n"));
andrewbonney	0:ec559500a63f	454	return;
andrewbonney	0:ec559500a63f	455	}
andrewbonney	0:ec559500a63f	456
andrewbonney	0:ec559500a63f	457	GETSHORT(prot, inp);
andrewbonney	0:ec559500a63f	458
andrewbonney	0:ec559500a63f	459	LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd Protocol-Reject packet for %x!\n", prot));
andrewbonney	0:ec559500a63f	460
andrewbonney	0:ec559500a63f	461	/*
andrewbonney	0:ec559500a63f	462	* Protocol-Reject packets received in any state other than the LCP
andrewbonney	0:ec559500a63f	463	* LS_OPENED state SHOULD be silently discarded.
andrewbonney	0:ec559500a63f	464	*/
andrewbonney	0:ec559500a63f	465	if( f->state != LS_OPENED ) {
andrewbonney	0:ec559500a63f	466	LCPDEBUG(LOG_INFO, ("Protocol-Reject discarded: LCP in state %d\n", f->state));
andrewbonney	0:ec559500a63f	467	return;
andrewbonney	0:ec559500a63f	468	}
andrewbonney	0:ec559500a63f	469
andrewbonney	0:ec559500a63f	470	/*
andrewbonney	0:ec559500a63f	471	* Upcall the proper Protocol-Reject routine.
andrewbonney	0:ec559500a63f	472	*/
andrewbonney	0:ec559500a63f	473	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
andrewbonney	0:ec559500a63f	474	if (protp->protocol == prot && protp->enabled_flag) {
andrewbonney	0:ec559500a63f	475	(*protp->protrej)(f->unit);
andrewbonney	0:ec559500a63f	476	return;
andrewbonney	0:ec559500a63f	477	}
andrewbonney	0:ec559500a63f	478	}
andrewbonney	0:ec559500a63f	479
andrewbonney	0:ec559500a63f	480	LCPDEBUG(LOG_WARNING, ("Protocol-Reject for unsupported protocol 0x%x\n", prot));
andrewbonney	0:ec559500a63f	481	}
andrewbonney	0:ec559500a63f	482
andrewbonney	0:ec559500a63f	483
andrewbonney	0:ec559500a63f	484	/*
andrewbonney	0:ec559500a63f	485	* lcp_protrej - A Protocol-Reject was received.
andrewbonney	0:ec559500a63f	486	*/
andrewbonney	0:ec559500a63f	487	static void
andrewbonney	0:ec559500a63f	488	lcp_protrej(int unit)
andrewbonney	0:ec559500a63f	489	{
andrewbonney	0:ec559500a63f	490	LWIP_UNUSED_ARG(unit);
andrewbonney	0:ec559500a63f	491	/*
andrewbonney	0:ec559500a63f	492	* Can't reject LCP!
andrewbonney	0:ec559500a63f	493	*/
andrewbonney	0:ec559500a63f	494	LCPDEBUG(LOG_WARNING, ("lcp_protrej: Received Protocol-Reject for LCP!\n"));
andrewbonney	0:ec559500a63f	495	fsm_protreject(&lcp_fsm[unit]);
andrewbonney	0:ec559500a63f	496	}
andrewbonney	0:ec559500a63f	497
andrewbonney	0:ec559500a63f	498
andrewbonney	0:ec559500a63f	499	/*
andrewbonney	0:ec559500a63f	500	* lcp_sprotrej - Send a Protocol-Reject for some protocol.
andrewbonney	0:ec559500a63f	501	*/
andrewbonney	0:ec559500a63f	502	void
andrewbonney	0:ec559500a63f	503	lcp_sprotrej(int unit, u_char *p, int len)
andrewbonney	0:ec559500a63f	504	{
andrewbonney	0:ec559500a63f	505	/*
andrewbonney	0:ec559500a63f	506	* Send back the protocol and the information field of the
andrewbonney	0:ec559500a63f	507	* rejected packet. We only get here if LCP is in the LS_OPENED state.
andrewbonney	0:ec559500a63f	508	*/
andrewbonney	0:ec559500a63f	509
andrewbonney	0:ec559500a63f	510	fsm_sdata(&lcp_fsm[unit], PROTREJ, ++lcp_fsm[unit].id, p, len);
andrewbonney	0:ec559500a63f	511	}
andrewbonney	0:ec559500a63f	512
andrewbonney	0:ec559500a63f	513
andrewbonney	0:ec559500a63f	514	/*
andrewbonney	0:ec559500a63f	515	* lcp_resetci - Reset our CI.
andrewbonney	0:ec559500a63f	516	*/
andrewbonney	0:ec559500a63f	517	static void
andrewbonney	0:ec559500a63f	518	lcp_resetci(fsm *f)
andrewbonney	0:ec559500a63f	519	{
andrewbonney	0:ec559500a63f	520	lcp_wantoptions[f->unit].magicnumber = magic();
andrewbonney	0:ec559500a63f	521	lcp_wantoptions[f->unit].numloops = 0;
andrewbonney	0:ec559500a63f	522	lcp_gotoptions[f->unit] = lcp_wantoptions[f->unit];
andrewbonney	0:ec559500a63f	523	peer_mru[f->unit] = PPP_MRU;
andrewbonney	0:ec559500a63f	524	auth_reset(f->unit);
andrewbonney	0:ec559500a63f	525	}
andrewbonney	0:ec559500a63f	526
andrewbonney	0:ec559500a63f	527
andrewbonney	0:ec559500a63f	528	/*
andrewbonney	0:ec559500a63f	529	* lcp_cilen - Return length of our CI.
andrewbonney	0:ec559500a63f	530	*/
andrewbonney	0:ec559500a63f	531	static int
andrewbonney	0:ec559500a63f	532	lcp_cilen(fsm *f)
andrewbonney	0:ec559500a63f	533	{
andrewbonney	0:ec559500a63f	534	lcp_options *go = &lcp_gotoptions[f->unit];
andrewbonney	0:ec559500a63f	535
andrewbonney	0:ec559500a63f	536	#define LENCIVOID(neg) ((neg) ? CILEN_VOID : 0)
andrewbonney	0:ec559500a63f	537	#define LENCICHAP(neg) ((neg) ? CILEN_CHAP : 0)
andrewbonney	0:ec559500a63f	538	#define LENCISHORT(neg) ((neg) ? CILEN_SHORT : 0)
andrewbonney	0:ec559500a63f	539	#define LENCILONG(neg) ((neg) ? CILEN_LONG : 0)
andrewbonney	0:ec559500a63f	540	#define LENCILQR(neg) ((neg) ? CILEN_LQR: 0)
andrewbonney	0:ec559500a63f	541	#define LENCICBCP(neg) ((neg) ? CILEN_CBCP: 0)
andrewbonney	0:ec559500a63f	542	/*
andrewbonney	0:ec559500a63f	543	* NB: we only ask for one of CHAP and UPAP, even if we will
andrewbonney	0:ec559500a63f	544	* accept either.
andrewbonney	0:ec559500a63f	545	*/
andrewbonney	0:ec559500a63f	546	return (LENCISHORT(go->neg_mru && go->mru != PPP_DEFMRU) +
andrewbonney	0:ec559500a63f	547	LENCILONG(go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) +
andrewbonney	0:ec559500a63f	548	LENCICHAP(go->neg_chap) +
andrewbonney	0:ec559500a63f	549	LENCISHORT(!go->neg_chap && go->neg_upap) +
andrewbonney	0:ec559500a63f	550	LENCILQR(go->neg_lqr) +
andrewbonney	0:ec559500a63f	551	LENCICBCP(go->neg_cbcp) +
andrewbonney	0:ec559500a63f	552	LENCILONG(go->neg_magicnumber) +
andrewbonney	0:ec559500a63f	553	LENCIVOID(go->neg_pcompression) +
andrewbonney	0:ec559500a63f	554	LENCIVOID(go->neg_accompression));
andrewbonney	0:ec559500a63f	555	}
andrewbonney	0:ec559500a63f	556
andrewbonney	0:ec559500a63f	557
andrewbonney	0:ec559500a63f	558	/*
andrewbonney	0:ec559500a63f	559	* lcp_addci - Add our desired CIs to a packet.
andrewbonney	0:ec559500a63f	560	*/
andrewbonney	0:ec559500a63f	561	static void
andrewbonney	0:ec559500a63f	562	lcp_addci(fsm f, u_char ucp, int *lenp)
andrewbonney	0:ec559500a63f	563	{
andrewbonney	0:ec559500a63f	564	lcp_options *go = &lcp_gotoptions[f->unit];
andrewbonney	0:ec559500a63f	565	u_char *start_ucp = ucp;
andrewbonney	0:ec559500a63f	566
andrewbonney	0:ec559500a63f	567	#define ADDCIVOID(opt, neg) \
andrewbonney	0:ec559500a63f	568	if (neg) { \
andrewbonney	0:ec559500a63f	569	LCPDEBUG(LOG_INFO, ("lcp_addci: opt=%d\n", opt)); \
andrewbonney	0:ec559500a63f	570	PUTCHAR(opt, ucp); \
andrewbonney	0:ec559500a63f	571	PUTCHAR(CILEN_VOID, ucp); \
andrewbonney	0:ec559500a63f	572	}
andrewbonney	0:ec559500a63f	573	#define ADDCISHORT(opt, neg, val) \
andrewbonney	0:ec559500a63f	574	if (neg) { \
andrewbonney	0:ec559500a63f	575	LCPDEBUG(LOG_INFO, ("lcp_addci: INT opt=%d %X\n", opt, val)); \
andrewbonney	0:ec559500a63f	576	PUTCHAR(opt, ucp); \
andrewbonney	0:ec559500a63f	577	PUTCHAR(CILEN_SHORT, ucp); \
andrewbonney	0:ec559500a63f	578	PUTSHORT(val, ucp); \
andrewbonney	0:ec559500a63f	579	}
andrewbonney	0:ec559500a63f	580	#define ADDCICHAP(opt, neg, val, digest) \
andrewbonney	0:ec559500a63f	581	if (neg) { \
andrewbonney	0:ec559500a63f	582	LCPDEBUG(LOG_INFO, ("lcp_addci: CHAP opt=%d %X\n", opt, val)); \
andrewbonney	0:ec559500a63f	583	PUTCHAR(opt, ucp); \
andrewbonney	0:ec559500a63f	584	PUTCHAR(CILEN_CHAP, ucp); \
andrewbonney	0:ec559500a63f	585	PUTSHORT(val, ucp); \
andrewbonney	0:ec559500a63f	586	PUTCHAR(digest, ucp); \
andrewbonney	0:ec559500a63f	587	}
andrewbonney	0:ec559500a63f	588	#define ADDCILONG(opt, neg, val) \
andrewbonney	0:ec559500a63f	589	if (neg) { \
andrewbonney	0:ec559500a63f	590	LCPDEBUG(LOG_INFO, ("lcp_addci: L opt=%d %lX\n", opt, val)); \
andrewbonney	0:ec559500a63f	591	PUTCHAR(opt, ucp); \
andrewbonney	0:ec559500a63f	592	PUTCHAR(CILEN_LONG, ucp); \
andrewbonney	0:ec559500a63f	593	PUTLONG(val, ucp); \
andrewbonney	0:ec559500a63f	594	}
andrewbonney	0:ec559500a63f	595	#define ADDCILQR(opt, neg, val) \
andrewbonney	0:ec559500a63f	596	if (neg) { \
andrewbonney	0:ec559500a63f	597	LCPDEBUG(LOG_INFO, ("lcp_addci: LQR opt=%d %lX\n", opt, val)); \
andrewbonney	0:ec559500a63f	598	PUTCHAR(opt, ucp); \
andrewbonney	0:ec559500a63f	599	PUTCHAR(CILEN_LQR, ucp); \
andrewbonney	0:ec559500a63f	600	PUTSHORT(PPP_LQR, ucp); \
andrewbonney	0:ec559500a63f	601	PUTLONG(val, ucp); \
andrewbonney	0:ec559500a63f	602	}
andrewbonney	0:ec559500a63f	603	#define ADDCICHAR(opt, neg, val) \
andrewbonney	0:ec559500a63f	604	if (neg) { \
andrewbonney	0:ec559500a63f	605	LCPDEBUG(LOG_INFO, ("lcp_addci: CHAR opt=%d %X '%z'\n", opt, val, val)); \
andrewbonney	0:ec559500a63f	606	PUTCHAR(opt, ucp); \
andrewbonney	0:ec559500a63f	607	PUTCHAR(CILEN_CHAR, ucp); \
andrewbonney	0:ec559500a63f	608	PUTCHAR(val, ucp); \
andrewbonney	0:ec559500a63f	609	}
andrewbonney	0:ec559500a63f	610
andrewbonney	0:ec559500a63f	611	ADDCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru);
andrewbonney	0:ec559500a63f	612	ADDCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap);
andrewbonney	0:ec559500a63f	613	ADDCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype);
andrewbonney	0:ec559500a63f	614	ADDCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP);
andrewbonney	0:ec559500a63f	615	ADDCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period);
andrewbonney	0:ec559500a63f	616	ADDCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT);
andrewbonney	0:ec559500a63f	617	ADDCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber);
andrewbonney	0:ec559500a63f	618	ADDCIVOID(CI_PCOMPRESSION, go->neg_pcompression);
andrewbonney	0:ec559500a63f	619	ADDCIVOID(CI_ACCOMPRESSION, go->neg_accompression);
andrewbonney	0:ec559500a63f	620
andrewbonney	0:ec559500a63f	621	if (ucp - start_ucp != *lenp) {
andrewbonney	0:ec559500a63f	622	/* this should never happen, because peer_mtu should be 1500 */
andrewbonney	0:ec559500a63f	623	LCPDEBUG(LOG_ERR, ("Bug in lcp_addci: wrong length\n"));
andrewbonney	0:ec559500a63f	624	}
andrewbonney	0:ec559500a63f	625	}
andrewbonney	0:ec559500a63f	626
andrewbonney	0:ec559500a63f	627
andrewbonney	0:ec559500a63f	628	/*
andrewbonney	0:ec559500a63f	629	* lcp_ackci - Ack our CIs.
andrewbonney	0:ec559500a63f	630	* This should not modify any state if the Ack is bad.
andrewbonney	0:ec559500a63f	631	*
andrewbonney	0:ec559500a63f	632	* Returns:
andrewbonney	0:ec559500a63f	633	* 0 - Ack was bad.
andrewbonney	0:ec559500a63f	634	* 1 - Ack was good.
andrewbonney	0:ec559500a63f	635	*/
andrewbonney	0:ec559500a63f	636	static int
andrewbonney	0:ec559500a63f	637	lcp_ackci(fsm f, u_char p, int len)
andrewbonney	0:ec559500a63f	638	{
andrewbonney	0:ec559500a63f	639	lcp_options *go = &lcp_gotoptions[f->unit];
andrewbonney	0:ec559500a63f	640	u_char cilen, citype, cichar;
andrewbonney	0:ec559500a63f	641	u_short cishort;
andrewbonney	0:ec559500a63f	642	u32_t cilong;
andrewbonney	0:ec559500a63f	643
andrewbonney	0:ec559500a63f	644	/*
andrewbonney	0:ec559500a63f	645	* CIs must be in exactly the same order that we sent.
andrewbonney	0:ec559500a63f	646	* Check packet length and CI length at each step.
andrewbonney	0:ec559500a63f	647	* If we find any deviations, then this packet is bad.
andrewbonney	0:ec559500a63f	648	*/
andrewbonney	0:ec559500a63f	649	#define ACKCIVOID(opt, neg) \
andrewbonney	0:ec559500a63f	650	if (neg) { \
andrewbonney	0:ec559500a63f	651	if ((len -= CILEN_VOID) < 0) \
andrewbonney	0:ec559500a63f	652	goto bad; \
andrewbonney	0:ec559500a63f	653	GETCHAR(citype, p); \
andrewbonney	0:ec559500a63f	654	GETCHAR(cilen, p); \
andrewbonney	0:ec559500a63f	655	if (cilen != CILEN_VOID \|\| citype != opt) \
andrewbonney	0:ec559500a63f	656	goto bad; \
andrewbonney	0:ec559500a63f	657	}
andrewbonney	0:ec559500a63f	658	#define ACKCISHORT(opt, neg, val) \
andrewbonney	0:ec559500a63f	659	if (neg) { \
andrewbonney	0:ec559500a63f	660	if ((len -= CILEN_SHORT) < 0) \
andrewbonney	0:ec559500a63f	661	goto bad; \
andrewbonney	0:ec559500a63f	662	GETCHAR(citype, p); \
andrewbonney	0:ec559500a63f	663	GETCHAR(cilen, p); \
andrewbonney	0:ec559500a63f	664	if (cilen != CILEN_SHORT \|\| citype != opt) \
andrewbonney	0:ec559500a63f	665	goto bad; \
andrewbonney	0:ec559500a63f	666	GETSHORT(cishort, p); \
andrewbonney	0:ec559500a63f	667	if (cishort != val) \
andrewbonney	0:ec559500a63f	668	goto bad; \
andrewbonney	0:ec559500a63f	669	}
andrewbonney	0:ec559500a63f	670	#define ACKCICHAR(opt, neg, val) \
andrewbonney	0:ec559500a63f	671	if (neg) { \
andrewbonney	0:ec559500a63f	672	if ((len -= CILEN_CHAR) < 0) \
andrewbonney	0:ec559500a63f	673	goto bad; \
andrewbonney	0:ec559500a63f	674	GETCHAR(citype, p); \
andrewbonney	0:ec559500a63f	675	GETCHAR(cilen, p); \
andrewbonney	0:ec559500a63f	676	if (cilen != CILEN_CHAR \|\| citype != opt) \
andrewbonney	0:ec559500a63f	677	goto bad; \
andrewbonney	0:ec559500a63f	678	GETCHAR(cichar, p); \
andrewbonney	0:ec559500a63f	679	if (cichar != val) \
andrewbonney	0:ec559500a63f	680	goto bad; \
andrewbonney	0:ec559500a63f	681	}
andrewbonney	0:ec559500a63f	682	#define ACKCICHAP(opt, neg, val, digest) \
andrewbonney	0:ec559500a63f	683	if (neg) { \
andrewbonney	0:ec559500a63f	684	if ((len -= CILEN_CHAP) < 0) \
andrewbonney	0:ec559500a63f	685	goto bad; \
andrewbonney	0:ec559500a63f	686	GETCHAR(citype, p); \
andrewbonney	0:ec559500a63f	687	GETCHAR(cilen, p); \
andrewbonney	0:ec559500a63f	688	if (cilen != CILEN_CHAP \|\| citype != opt) \
andrewbonney	0:ec559500a63f	689	goto bad; \
andrewbonney	0:ec559500a63f	690	GETSHORT(cishort, p); \
andrewbonney	0:ec559500a63f	691	if (cishort != val) \
andrewbonney	0:ec559500a63f	692	goto bad; \
andrewbonney	0:ec559500a63f	693	GETCHAR(cichar, p); \
andrewbonney	0:ec559500a63f	694	if (cichar != digest) \
andrewbonney	0:ec559500a63f	695	goto bad; \
andrewbonney	0:ec559500a63f	696	}
andrewbonney	0:ec559500a63f	697	#define ACKCILONG(opt, neg, val) \
andrewbonney	0:ec559500a63f	698	if (neg) { \
andrewbonney	0:ec559500a63f	699	if ((len -= CILEN_LONG) < 0) \
andrewbonney	0:ec559500a63f	700	goto bad; \
andrewbonney	0:ec559500a63f	701	GETCHAR(citype, p); \
andrewbonney	0:ec559500a63f	702	GETCHAR(cilen, p); \
andrewbonney	0:ec559500a63f	703	if (cilen != CILEN_LONG \|\| citype != opt) \
andrewbonney	0:ec559500a63f	704	goto bad; \
andrewbonney	0:ec559500a63f	705	GETLONG(cilong, p); \
andrewbonney	0:ec559500a63f	706	if (cilong != val) \
andrewbonney	0:ec559500a63f	707	goto bad; \
andrewbonney	0:ec559500a63f	708	}
andrewbonney	0:ec559500a63f	709	#define ACKCILQR(opt, neg, val) \
andrewbonney	0:ec559500a63f	710	if (neg) { \
andrewbonney	0:ec559500a63f	711	if ((len -= CILEN_LQR) < 0) \
andrewbonney	0:ec559500a63f	712	goto bad; \
andrewbonney	0:ec559500a63f	713	GETCHAR(citype, p); \
andrewbonney	0:ec559500a63f	714	GETCHAR(cilen, p); \
andrewbonney	0:ec559500a63f	715	if (cilen != CILEN_LQR \|\| citype != opt) \
andrewbonney	0:ec559500a63f	716	goto bad; \
andrewbonney	0:ec559500a63f	717	GETSHORT(cishort, p); \
andrewbonney	0:ec559500a63f	718	if (cishort != PPP_LQR) \
andrewbonney	0:ec559500a63f	719	goto bad; \
andrewbonney	0:ec559500a63f	720	GETLONG(cilong, p); \
andrewbonney	0:ec559500a63f	721	if (cilong != val) \
andrewbonney	0:ec559500a63f	722	goto bad; \
andrewbonney	0:ec559500a63f	723	}
andrewbonney	0:ec559500a63f	724
andrewbonney	0:ec559500a63f	725	ACKCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru);
andrewbonney	0:ec559500a63f	726	ACKCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap);
andrewbonney	0:ec559500a63f	727	ACKCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype);
andrewbonney	0:ec559500a63f	728	ACKCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP);
andrewbonney	0:ec559500a63f	729	ACKCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period);
andrewbonney	0:ec559500a63f	730	ACKCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT);
andrewbonney	0:ec559500a63f	731	ACKCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber);
andrewbonney	0:ec559500a63f	732	ACKCIVOID(CI_PCOMPRESSION, go->neg_pcompression);
andrewbonney	0:ec559500a63f	733	ACKCIVOID(CI_ACCOMPRESSION, go->neg_accompression);
andrewbonney	0:ec559500a63f	734
andrewbonney	0:ec559500a63f	735	/*
andrewbonney	0:ec559500a63f	736	* If there are any remaining CIs, then this packet is bad.
andrewbonney	0:ec559500a63f	737	*/
andrewbonney	0:ec559500a63f	738	if (len != 0) {
andrewbonney	0:ec559500a63f	739	goto bad;
andrewbonney	0:ec559500a63f	740	}
andrewbonney	0:ec559500a63f	741	LCPDEBUG(LOG_INFO, ("lcp_acki: Ack\n"));
andrewbonney	0:ec559500a63f	742	return (1);
andrewbonney	0:ec559500a63f	743	bad:
andrewbonney	0:ec559500a63f	744	LCPDEBUG(LOG_WARNING, ("lcp_acki: received bad Ack!\n"));
andrewbonney	0:ec559500a63f	745	return (0);
andrewbonney	0:ec559500a63f	746	}
andrewbonney	0:ec559500a63f	747
andrewbonney	0:ec559500a63f	748
andrewbonney	0:ec559500a63f	749	/*
andrewbonney	0:ec559500a63f	750	* lcp_nakci - Peer has sent a NAK for some of our CIs.
andrewbonney	0:ec559500a63f	751	* This should not modify any state if the Nak is bad
andrewbonney	0:ec559500a63f	752	* or if LCP is in the LS_OPENED state.
andrewbonney	0:ec559500a63f	753	*
andrewbonney	0:ec559500a63f	754	* Returns:
andrewbonney	0:ec559500a63f	755	* 0 - Nak was bad.
andrewbonney	0:ec559500a63f	756	* 1 - Nak was good.
andrewbonney	0:ec559500a63f	757	*/
andrewbonney	0:ec559500a63f	758	static int
andrewbonney	0:ec559500a63f	759	lcp_nakci(fsm f, u_char p, int len)
andrewbonney	0:ec559500a63f	760	{
andrewbonney	0:ec559500a63f	761	lcp_options *go = &lcp_gotoptions[f->unit];
andrewbonney	0:ec559500a63f	762	lcp_options *wo = &lcp_wantoptions[f->unit];
andrewbonney	0:ec559500a63f	763	u_char citype, cichar, *next;
andrewbonney	0:ec559500a63f	764	u_short cishort;
andrewbonney	0:ec559500a63f	765	u32_t cilong;
andrewbonney	0:ec559500a63f	766	lcp_options no; /* options we've seen Naks for */
andrewbonney	0:ec559500a63f	767	lcp_options try; /* options to request next time */
andrewbonney	0:ec559500a63f	768	int looped_back = 0;
andrewbonney	0:ec559500a63f	769	int cilen;
andrewbonney	0:ec559500a63f	770
andrewbonney	0:ec559500a63f	771	BZERO(&no, sizeof(no));
andrewbonney	0:ec559500a63f	772	try = *go;
andrewbonney	0:ec559500a63f	773
andrewbonney	0:ec559500a63f	774	/*
andrewbonney	0:ec559500a63f	775	* Any Nak'd CIs must be in exactly the same order that we sent.
andrewbonney	0:ec559500a63f	776	* Check packet length and CI length at each step.
andrewbonney	0:ec559500a63f	777	* If we find any deviations, then this packet is bad.
andrewbonney	0:ec559500a63f	778	*/
andrewbonney	0:ec559500a63f	779	#define NAKCIVOID(opt, neg, code) \
andrewbonney	0:ec559500a63f	780	if (go->neg && \
andrewbonney	0:ec559500a63f	781	len >= CILEN_VOID && \
andrewbonney	0:ec559500a63f	782	p[1] == CILEN_VOID && \
andrewbonney	0:ec559500a63f	783	p[0] == opt) { \
andrewbonney	0:ec559500a63f	784	len -= CILEN_VOID; \
andrewbonney	0:ec559500a63f	785	INCPTR(CILEN_VOID, p); \
andrewbonney	0:ec559500a63f	786	no.neg = 1; \
andrewbonney	0:ec559500a63f	787	code \
andrewbonney	0:ec559500a63f	788	}
andrewbonney	0:ec559500a63f	789	#define NAKCICHAP(opt, neg, code) \
andrewbonney	0:ec559500a63f	790	if (go->neg && \
andrewbonney	0:ec559500a63f	791	len >= CILEN_CHAP && \
andrewbonney	0:ec559500a63f	792	p[1] == CILEN_CHAP && \
andrewbonney	0:ec559500a63f	793	p[0] == opt) { \
andrewbonney	0:ec559500a63f	794	len -= CILEN_CHAP; \
andrewbonney	0:ec559500a63f	795	INCPTR(2, p); \
andrewbonney	0:ec559500a63f	796	GETSHORT(cishort, p); \
andrewbonney	0:ec559500a63f	797	GETCHAR(cichar, p); \
andrewbonney	0:ec559500a63f	798	no.neg = 1; \
andrewbonney	0:ec559500a63f	799	code \
andrewbonney	0:ec559500a63f	800	}
andrewbonney	0:ec559500a63f	801	#define NAKCICHAR(opt, neg, code) \
andrewbonney	0:ec559500a63f	802	if (go->neg && \
andrewbonney	0:ec559500a63f	803	len >= CILEN_CHAR && \
andrewbonney	0:ec559500a63f	804	p[1] == CILEN_CHAR && \
andrewbonney	0:ec559500a63f	805	p[0] == opt) { \
andrewbonney	0:ec559500a63f	806	len -= CILEN_CHAR; \
andrewbonney	0:ec559500a63f	807	INCPTR(2, p); \
andrewbonney	0:ec559500a63f	808	GETCHAR(cichar, p); \
andrewbonney	0:ec559500a63f	809	no.neg = 1; \
andrewbonney	0:ec559500a63f	810	code \
andrewbonney	0:ec559500a63f	811	}
andrewbonney	0:ec559500a63f	812	#define NAKCISHORT(opt, neg, code) \
andrewbonney	0:ec559500a63f	813	if (go->neg && \
andrewbonney	0:ec559500a63f	814	len >= CILEN_SHORT && \
andrewbonney	0:ec559500a63f	815	p[1] == CILEN_SHORT && \
andrewbonney	0:ec559500a63f	816	p[0] == opt) { \
andrewbonney	0:ec559500a63f	817	len -= CILEN_SHORT; \
andrewbonney	0:ec559500a63f	818	INCPTR(2, p); \
andrewbonney	0:ec559500a63f	819	GETSHORT(cishort, p); \
andrewbonney	0:ec559500a63f	820	no.neg = 1; \
andrewbonney	0:ec559500a63f	821	code \
andrewbonney	0:ec559500a63f	822	}
andrewbonney	0:ec559500a63f	823	#define NAKCILONG(opt, neg, code) \
andrewbonney	0:ec559500a63f	824	if (go->neg && \
andrewbonney	0:ec559500a63f	825	len >= CILEN_LONG && \
andrewbonney	0:ec559500a63f	826	p[1] == CILEN_LONG && \
andrewbonney	0:ec559500a63f	827	p[0] == opt) { \
andrewbonney	0:ec559500a63f	828	len -= CILEN_LONG; \
andrewbonney	0:ec559500a63f	829	INCPTR(2, p); \
andrewbonney	0:ec559500a63f	830	GETLONG(cilong, p); \
andrewbonney	0:ec559500a63f	831	no.neg = 1; \
andrewbonney	0:ec559500a63f	832	code \
andrewbonney	0:ec559500a63f	833	}
andrewbonney	0:ec559500a63f	834	#define NAKCILQR(opt, neg, code) \
andrewbonney	0:ec559500a63f	835	if (go->neg && \
andrewbonney	0:ec559500a63f	836	len >= CILEN_LQR && \
andrewbonney	0:ec559500a63f	837	p[1] == CILEN_LQR && \
andrewbonney	0:ec559500a63f	838	p[0] == opt) { \
andrewbonney	0:ec559500a63f	839	len -= CILEN_LQR; \
andrewbonney	0:ec559500a63f	840	INCPTR(2, p); \
andrewbonney	0:ec559500a63f	841	GETSHORT(cishort, p); \
andrewbonney	0:ec559500a63f	842	GETLONG(cilong, p); \
andrewbonney	0:ec559500a63f	843	no.neg = 1; \
andrewbonney	0:ec559500a63f	844	code \
andrewbonney	0:ec559500a63f	845	}
andrewbonney	0:ec559500a63f	846
andrewbonney	0:ec559500a63f	847	/*
andrewbonney	0:ec559500a63f	848	* We don't care if they want to send us smaller packets than
andrewbonney	0:ec559500a63f	849	* we want. Therefore, accept any MRU less than what we asked for,
andrewbonney	0:ec559500a63f	850	* but then ignore the new value when setting the MRU in the kernel.
andrewbonney	0:ec559500a63f	851	* If they send us a bigger MRU than what we asked, accept it, up to
andrewbonney	0:ec559500a63f	852	* the limit of the default MRU we'd get if we didn't negotiate.
andrewbonney	0:ec559500a63f	853	*/
andrewbonney	0:ec559500a63f	854	if (go->neg_mru && go->mru != PPP_DEFMRU) {
andrewbonney	0:ec559500a63f	855	NAKCISHORT(CI_MRU, neg_mru,
andrewbonney	0:ec559500a63f	856	if (cishort <= wo->mru \|\| cishort < PPP_DEFMRU) {
andrewbonney	0:ec559500a63f	857	try.mru = cishort;
andrewbonney	0:ec559500a63f	858	}
andrewbonney	0:ec559500a63f	859	);
andrewbonney	0:ec559500a63f	860	}
andrewbonney	0:ec559500a63f	861
andrewbonney	0:ec559500a63f	862	/*
andrewbonney	0:ec559500a63f	863	* Add any characters they want to our (receive-side) asyncmap.
andrewbonney	0:ec559500a63f	864	*/
andrewbonney	0:ec559500a63f	865	if (go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) {
andrewbonney	0:ec559500a63f	866	NAKCILONG(CI_ASYNCMAP, neg_asyncmap,
andrewbonney	0:ec559500a63f	867	try.asyncmap = go->asyncmap \| cilong;
andrewbonney	0:ec559500a63f	868	);
andrewbonney	0:ec559500a63f	869	}
andrewbonney	0:ec559500a63f	870
andrewbonney	0:ec559500a63f	871	/*
andrewbonney	0:ec559500a63f	872	* If they've nak'd our authentication-protocol, check whether
andrewbonney	0:ec559500a63f	873	* they are proposing a different protocol, or a different
andrewbonney	0:ec559500a63f	874	* hash algorithm for CHAP.
andrewbonney	0:ec559500a63f	875	*/
andrewbonney	0:ec559500a63f	876	if ((go->neg_chap \|\| go->neg_upap)
andrewbonney	0:ec559500a63f	877	&& len >= CILEN_SHORT
andrewbonney	0:ec559500a63f	878	&& p[0] == CI_AUTHTYPE && p[1] >= CILEN_SHORT && p[1] <= len) {
andrewbonney	0:ec559500a63f	879	cilen = p[1];
andrewbonney	0:ec559500a63f	880	len -= cilen;
andrewbonney	0:ec559500a63f	881	no.neg_chap = go->neg_chap;
andrewbonney	0:ec559500a63f	882	no.neg_upap = go->neg_upap;
andrewbonney	0:ec559500a63f	883	INCPTR(2, p);
andrewbonney	0:ec559500a63f	884	GETSHORT(cishort, p);
andrewbonney	0:ec559500a63f	885	if (cishort == PPP_PAP && cilen == CILEN_SHORT) {
andrewbonney	0:ec559500a63f	886	/*
andrewbonney	0:ec559500a63f	887	* If we were asking for CHAP, they obviously don't want to do it.
andrewbonney	0:ec559500a63f	888	* If we weren't asking for CHAP, then we were asking for PAP,
andrewbonney	0:ec559500a63f	889	* in which case this Nak is bad.
andrewbonney	0:ec559500a63f	890	*/
andrewbonney	0:ec559500a63f	891	if (!go->neg_chap) {
andrewbonney	0:ec559500a63f	892	goto bad;
andrewbonney	0:ec559500a63f	893	}
andrewbonney	0:ec559500a63f	894	try.neg_chap = 0;
andrewbonney	0:ec559500a63f	895
andrewbonney	0:ec559500a63f	896	} else if (cishort == PPP_CHAP && cilen == CILEN_CHAP) {
andrewbonney	0:ec559500a63f	897	GETCHAR(cichar, p);
andrewbonney	0:ec559500a63f	898	if (go->neg_chap) {
andrewbonney	0:ec559500a63f	899	/*
andrewbonney	0:ec559500a63f	900	* We were asking for CHAP/MD5; they must want a different
andrewbonney	0:ec559500a63f	901	* algorithm. If they can't do MD5, we'll have to stop
andrewbonney	0:ec559500a63f	902	* asking for CHAP.
andrewbonney	0:ec559500a63f	903	*/
andrewbonney	0:ec559500a63f	904	if (cichar != go->chap_mdtype) {
andrewbonney	0:ec559500a63f	905	try.neg_chap = 0;
andrewbonney	0:ec559500a63f	906	}
andrewbonney	0:ec559500a63f	907	} else {
andrewbonney	0:ec559500a63f	908	/*
andrewbonney	0:ec559500a63f	909	* Stop asking for PAP if we were asking for it.
andrewbonney	0:ec559500a63f	910	*/
andrewbonney	0:ec559500a63f	911	try.neg_upap = 0;
andrewbonney	0:ec559500a63f	912	}
andrewbonney	0:ec559500a63f	913
andrewbonney	0:ec559500a63f	914	} else {
andrewbonney	0:ec559500a63f	915	/*
andrewbonney	0:ec559500a63f	916	* We don't recognize what they're suggesting.
andrewbonney	0:ec559500a63f	917	* Stop asking for what we were asking for.
andrewbonney	0:ec559500a63f	918	*/
andrewbonney	0:ec559500a63f	919	if (go->neg_chap) {
andrewbonney	0:ec559500a63f	920	try.neg_chap = 0;
andrewbonney	0:ec559500a63f	921	} else {
andrewbonney	0:ec559500a63f	922	try.neg_upap = 0;
andrewbonney	0:ec559500a63f	923	}
andrewbonney	0:ec559500a63f	924	p += cilen - CILEN_SHORT;
andrewbonney	0:ec559500a63f	925	}
andrewbonney	0:ec559500a63f	926	}
andrewbonney	0:ec559500a63f	927
andrewbonney	0:ec559500a63f	928	/*
andrewbonney	0:ec559500a63f	929	* If they can't cope with our link quality protocol, we'll have
andrewbonney	0:ec559500a63f	930	* to stop asking for LQR. We haven't got any other protocol.
andrewbonney	0:ec559500a63f	931	* If they Nak the reporting period, take their value XXX ?
andrewbonney	0:ec559500a63f	932	*/
andrewbonney	0:ec559500a63f	933	NAKCILQR(CI_QUALITY, neg_lqr,
andrewbonney	0:ec559500a63f	934	if (cishort != PPP_LQR) {
andrewbonney	0:ec559500a63f	935	try.neg_lqr = 0;
andrewbonney	0:ec559500a63f	936	} else {
andrewbonney	0:ec559500a63f	937	try.lqr_period = cilong;
andrewbonney	0:ec559500a63f	938	}
andrewbonney	0:ec559500a63f	939	);
andrewbonney	0:ec559500a63f	940
andrewbonney	0:ec559500a63f	941	/*
andrewbonney	0:ec559500a63f	942	* Only implementing CBCP...not the rest of the callback options
andrewbonney	0:ec559500a63f	943	*/
andrewbonney	0:ec559500a63f	944	NAKCICHAR(CI_CALLBACK, neg_cbcp,
andrewbonney	0:ec559500a63f	945	try.neg_cbcp = 0;
andrewbonney	0:ec559500a63f	946	);
andrewbonney	0:ec559500a63f	947
andrewbonney	0:ec559500a63f	948	/*
andrewbonney	0:ec559500a63f	949	* Check for a looped-back line.
andrewbonney	0:ec559500a63f	950	*/
andrewbonney	0:ec559500a63f	951	NAKCILONG(CI_MAGICNUMBER, neg_magicnumber,
andrewbonney	0:ec559500a63f	952	try.magicnumber = magic();
andrewbonney	0:ec559500a63f	953	looped_back = 1;
andrewbonney	0:ec559500a63f	954	);
andrewbonney	0:ec559500a63f	955
andrewbonney	0:ec559500a63f	956	/*
andrewbonney	0:ec559500a63f	957	* Peer shouldn't send Nak for protocol compression or
andrewbonney	0:ec559500a63f	958	* address/control compression requests; they should send
andrewbonney	0:ec559500a63f	959	* a Reject instead. If they send a Nak, treat it as a Reject.
andrewbonney	0:ec559500a63f	960	*/
andrewbonney	0:ec559500a63f	961	NAKCIVOID(CI_PCOMPRESSION, neg_pcompression,
andrewbonney	0:ec559500a63f	962	try.neg_pcompression = 0;
andrewbonney	0:ec559500a63f	963	);
andrewbonney	0:ec559500a63f	964	NAKCIVOID(CI_ACCOMPRESSION, neg_accompression,
andrewbonney	0:ec559500a63f	965	try.neg_accompression = 0;
andrewbonney	0:ec559500a63f	966	);
andrewbonney	0:ec559500a63f	967
andrewbonney	0:ec559500a63f	968	/*
andrewbonney	0:ec559500a63f	969	* There may be remaining CIs, if the peer is requesting negotiation
andrewbonney	0:ec559500a63f	970	* on an option that we didn't include in our request packet.
andrewbonney	0:ec559500a63f	971	* If we see an option that we requested, or one we've already seen
andrewbonney	0:ec559500a63f	972	* in this packet, then this packet is bad.
andrewbonney	0:ec559500a63f	973	* If we wanted to respond by starting to negotiate on the requested
andrewbonney	0:ec559500a63f	974	* option(s), we could, but we don't, because except for the
andrewbonney	0:ec559500a63f	975	* authentication type and quality protocol, if we are not negotiating
andrewbonney	0:ec559500a63f	976	* an option, it is because we were told not to.
andrewbonney	0:ec559500a63f	977	* For the authentication type, the Nak from the peer means
andrewbonney	0:ec559500a63f	978	* `let me authenticate myself with you' which is a bit pointless.
andrewbonney	0:ec559500a63f	979	* For the quality protocol, the Nak means `ask me to send you quality
andrewbonney	0:ec559500a63f	980	* reports', but if we didn't ask for them, we don't want them.
andrewbonney	0:ec559500a63f	981	* An option we don't recognize represents the peer asking to
andrewbonney	0:ec559500a63f	982	* negotiate some option we don't support, so ignore it.
andrewbonney	0:ec559500a63f	983	*/
andrewbonney	0:ec559500a63f	984	while (len > CILEN_VOID) {
andrewbonney	0:ec559500a63f	985	GETCHAR(citype, p);
andrewbonney	0:ec559500a63f	986	GETCHAR(cilen, p);
andrewbonney	0:ec559500a63f	987	if (cilen < CILEN_VOID \|\| (len -= cilen) < 0) {
andrewbonney	0:ec559500a63f	988	goto bad;
andrewbonney	0:ec559500a63f	989	}
andrewbonney	0:ec559500a63f	990	next = p + cilen - 2;
andrewbonney	0:ec559500a63f	991
andrewbonney	0:ec559500a63f	992	switch (citype) {
andrewbonney	0:ec559500a63f	993	case CI_MRU:
andrewbonney	0:ec559500a63f	994	if ((go->neg_mru && go->mru != PPP_DEFMRU)
andrewbonney	0:ec559500a63f	995	\|\| no.neg_mru \|\| cilen != CILEN_SHORT) {
andrewbonney	0:ec559500a63f	996	goto bad;
andrewbonney	0:ec559500a63f	997	}
andrewbonney	0:ec559500a63f	998	GETSHORT(cishort, p);
andrewbonney	0:ec559500a63f	999	if (cishort < PPP_DEFMRU) {
andrewbonney	0:ec559500a63f	1000	try.mru = cishort;
andrewbonney	0:ec559500a63f	1001	}
andrewbonney	0:ec559500a63f	1002	break;
andrewbonney	0:ec559500a63f	1003	case CI_ASYNCMAP:
andrewbonney	0:ec559500a63f	1004	if ((go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl)
andrewbonney	0:ec559500a63f	1005	\|\| no.neg_asyncmap \|\| cilen != CILEN_LONG) {
andrewbonney	0:ec559500a63f	1006	goto bad;
andrewbonney	0:ec559500a63f	1007	}
andrewbonney	0:ec559500a63f	1008	break;
andrewbonney	0:ec559500a63f	1009	case CI_AUTHTYPE:
andrewbonney	0:ec559500a63f	1010	if (go->neg_chap \|\| no.neg_chap \|\| go->neg_upap \|\| no.neg_upap) {
andrewbonney	0:ec559500a63f	1011	goto bad;
andrewbonney	0:ec559500a63f	1012	}
andrewbonney	0:ec559500a63f	1013	break;
andrewbonney	0:ec559500a63f	1014	case CI_MAGICNUMBER:
andrewbonney	0:ec559500a63f	1015	if (go->neg_magicnumber \|\| no.neg_magicnumber \|\|
andrewbonney	0:ec559500a63f	1016	cilen != CILEN_LONG) {
andrewbonney	0:ec559500a63f	1017	goto bad;
andrewbonney	0:ec559500a63f	1018	}
andrewbonney	0:ec559500a63f	1019	break;
andrewbonney	0:ec559500a63f	1020	case CI_PCOMPRESSION:
andrewbonney	0:ec559500a63f	1021	if (go->neg_pcompression \|\| no.neg_pcompression
andrewbonney	0:ec559500a63f	1022	\|\| cilen != CILEN_VOID) {
andrewbonney	0:ec559500a63f	1023	goto bad;
andrewbonney	0:ec559500a63f	1024	}
andrewbonney	0:ec559500a63f	1025	break;
andrewbonney	0:ec559500a63f	1026	case CI_ACCOMPRESSION:
andrewbonney	0:ec559500a63f	1027	if (go->neg_accompression \|\| no.neg_accompression
andrewbonney	0:ec559500a63f	1028	\|\| cilen != CILEN_VOID) {
andrewbonney	0:ec559500a63f	1029	goto bad;
andrewbonney	0:ec559500a63f	1030	}
andrewbonney	0:ec559500a63f	1031	break;
andrewbonney	0:ec559500a63f	1032	case CI_QUALITY:
andrewbonney	0:ec559500a63f	1033	if (go->neg_lqr \|\| no.neg_lqr \|\| cilen != CILEN_LQR) {
andrewbonney	0:ec559500a63f	1034	goto bad;
andrewbonney	0:ec559500a63f	1035	}
andrewbonney	0:ec559500a63f	1036	break;
andrewbonney	0:ec559500a63f	1037	}
andrewbonney	0:ec559500a63f	1038	p = next;
andrewbonney	0:ec559500a63f	1039	}
andrewbonney	0:ec559500a63f	1040
andrewbonney	0:ec559500a63f	1041	/* If there is still anything left, this packet is bad. */
andrewbonney	0:ec559500a63f	1042	if (len != 0) {
andrewbonney	0:ec559500a63f	1043	goto bad;
andrewbonney	0:ec559500a63f	1044	}
andrewbonney	0:ec559500a63f	1045
andrewbonney	0:ec559500a63f	1046	/*
andrewbonney	0:ec559500a63f	1047	* OK, the Nak is good. Now we can update state.
andrewbonney	0:ec559500a63f	1048	*/
andrewbonney	0:ec559500a63f	1049	if (f->state != LS_OPENED) {
andrewbonney	0:ec559500a63f	1050	if (looped_back) {
andrewbonney	0:ec559500a63f	1051	if (++try.numloops >= lcp_loopbackfail) {
andrewbonney	0:ec559500a63f	1052	LCPDEBUG(LOG_NOTICE, ("Serial line is looped back.\n"));
andrewbonney	0:ec559500a63f	1053	lcp_close(f->unit, "Loopback detected");
andrewbonney	0:ec559500a63f	1054	}
andrewbonney	0:ec559500a63f	1055	} else {
andrewbonney	0:ec559500a63f	1056	try.numloops = 0;
andrewbonney	0:ec559500a63f	1057	}
andrewbonney	0:ec559500a63f	1058	*go = try;
andrewbonney	0:ec559500a63f	1059	}
andrewbonney	0:ec559500a63f	1060
andrewbonney	0:ec559500a63f	1061	return 1;
andrewbonney	0:ec559500a63f	1062
andrewbonney	0:ec559500a63f	1063	bad:
andrewbonney	0:ec559500a63f	1064	LCPDEBUG(LOG_WARNING, ("lcp_nakci: received bad Nak!\n"));
andrewbonney	0:ec559500a63f	1065	return 0;
andrewbonney	0:ec559500a63f	1066	}
andrewbonney	0:ec559500a63f	1067
andrewbonney	0:ec559500a63f	1068
andrewbonney	0:ec559500a63f	1069	/*
andrewbonney	0:ec559500a63f	1070	* lcp_rejci - Peer has Rejected some of our CIs.
andrewbonney	0:ec559500a63f	1071	* This should not modify any state if the Reject is bad
andrewbonney	0:ec559500a63f	1072	* or if LCP is in the LS_OPENED state.
andrewbonney	0:ec559500a63f	1073	*
andrewbonney	0:ec559500a63f	1074	* Returns:
andrewbonney	0:ec559500a63f	1075	* 0 - Reject was bad.
andrewbonney	0:ec559500a63f	1076	* 1 - Reject was good.
andrewbonney	0:ec559500a63f	1077	*/
andrewbonney	0:ec559500a63f	1078	static int
andrewbonney	0:ec559500a63f	1079	lcp_rejci(fsm f, u_char p, int len)
andrewbonney	0:ec559500a63f	1080	{
andrewbonney	0:ec559500a63f	1081	lcp_options *go = &lcp_gotoptions[f->unit];
andrewbonney	0:ec559500a63f	1082	u_char cichar;
andrewbonney	0:ec559500a63f	1083	u_short cishort;
andrewbonney	0:ec559500a63f	1084	u32_t cilong;
andrewbonney	0:ec559500a63f	1085	lcp_options try; /* options to request next time */
andrewbonney	0:ec559500a63f	1086
andrewbonney	0:ec559500a63f	1087	try = *go;
andrewbonney	0:ec559500a63f	1088
andrewbonney	0:ec559500a63f	1089	/*
andrewbonney	0:ec559500a63f	1090	* Any Rejected CIs must be in exactly the same order that we sent.
andrewbonney	0:ec559500a63f	1091	* Check packet length and CI length at each step.
andrewbonney	0:ec559500a63f	1092	* If we find any deviations, then this packet is bad.
andrewbonney	0:ec559500a63f	1093	*/
andrewbonney	0:ec559500a63f	1094	#define REJCIVOID(opt, neg) \
andrewbonney	0:ec559500a63f	1095	if (go->neg && \
andrewbonney	0:ec559500a63f	1096	len >= CILEN_VOID && \
andrewbonney	0:ec559500a63f	1097	p[1] == CILEN_VOID && \
andrewbonney	0:ec559500a63f	1098	p[0] == opt) { \
andrewbonney	0:ec559500a63f	1099	len -= CILEN_VOID; \
andrewbonney	0:ec559500a63f	1100	INCPTR(CILEN_VOID, p); \
andrewbonney	0:ec559500a63f	1101	try.neg = 0; \
andrewbonney	0:ec559500a63f	1102	LCPDEBUG(LOG_INFO, ("lcp_rejci: void opt %d rejected\n", opt)); \
andrewbonney	0:ec559500a63f	1103	}
andrewbonney	0:ec559500a63f	1104	#define REJCISHORT(opt, neg, val) \
andrewbonney	0:ec559500a63f	1105	if (go->neg && \
andrewbonney	0:ec559500a63f	1106	len >= CILEN_SHORT && \
andrewbonney	0:ec559500a63f	1107	p[1] == CILEN_SHORT && \
andrewbonney	0:ec559500a63f	1108	p[0] == opt) { \
andrewbonney	0:ec559500a63f	1109	len -= CILEN_SHORT; \
andrewbonney	0:ec559500a63f	1110	INCPTR(2, p); \
andrewbonney	0:ec559500a63f	1111	GETSHORT(cishort, p); \
andrewbonney	0:ec559500a63f	1112	/* Check rejected value. */ \
andrewbonney	0:ec559500a63f	1113	if (cishort != val) { \
andrewbonney	0:ec559500a63f	1114	goto bad; \
andrewbonney	0:ec559500a63f	1115	} \
andrewbonney	0:ec559500a63f	1116	try.neg = 0; \
andrewbonney	0:ec559500a63f	1117	LCPDEBUG(LOG_INFO, ("lcp_rejci: short opt %d rejected\n", opt)); \
andrewbonney	0:ec559500a63f	1118	}
andrewbonney	0:ec559500a63f	1119	#define REJCICHAP(opt, neg, val, digest) \
andrewbonney	0:ec559500a63f	1120	if (go->neg && \
andrewbonney	0:ec559500a63f	1121	len >= CILEN_CHAP && \
andrewbonney	0:ec559500a63f	1122	p[1] == CILEN_CHAP && \
andrewbonney	0:ec559500a63f	1123	p[0] == opt) { \
andrewbonney	0:ec559500a63f	1124	len -= CILEN_CHAP; \
andrewbonney	0:ec559500a63f	1125	INCPTR(2, p); \
andrewbonney	0:ec559500a63f	1126	GETSHORT(cishort, p); \
andrewbonney	0:ec559500a63f	1127	GETCHAR(cichar, p); \
andrewbonney	0:ec559500a63f	1128	/* Check rejected value. */ \
andrewbonney	0:ec559500a63f	1129	if (cishort != val \|\| cichar != digest) { \
andrewbonney	0:ec559500a63f	1130	goto bad; \
andrewbonney	0:ec559500a63f	1131	} \
andrewbonney	0:ec559500a63f	1132	try.neg = 0; \
andrewbonney	0:ec559500a63f	1133	try.neg_upap = 0; \
andrewbonney	0:ec559500a63f	1134	LCPDEBUG(LOG_INFO, ("lcp_rejci: chap opt %d rejected\n", opt)); \
andrewbonney	0:ec559500a63f	1135	}
andrewbonney	0:ec559500a63f	1136	#define REJCILONG(opt, neg, val) \
andrewbonney	0:ec559500a63f	1137	if (go->neg && \
andrewbonney	0:ec559500a63f	1138	len >= CILEN_LONG && \
andrewbonney	0:ec559500a63f	1139	p[1] == CILEN_LONG && \
andrewbonney	0:ec559500a63f	1140	p[0] == opt) { \
andrewbonney	0:ec559500a63f	1141	len -= CILEN_LONG; \
andrewbonney	0:ec559500a63f	1142	INCPTR(2, p); \
andrewbonney	0:ec559500a63f	1143	GETLONG(cilong, p); \
andrewbonney	0:ec559500a63f	1144	/* Check rejected value. */ \
andrewbonney	0:ec559500a63f	1145	if (cilong != val) { \
andrewbonney	0:ec559500a63f	1146	goto bad; \
andrewbonney	0:ec559500a63f	1147	} \
andrewbonney	0:ec559500a63f	1148	try.neg = 0; \
andrewbonney	0:ec559500a63f	1149	LCPDEBUG(LOG_INFO, ("lcp_rejci: long opt %d rejected\n", opt)); \
andrewbonney	0:ec559500a63f	1150	}
andrewbonney	0:ec559500a63f	1151	#define REJCILQR(opt, neg, val) \
andrewbonney	0:ec559500a63f	1152	if (go->neg && \
andrewbonney	0:ec559500a63f	1153	len >= CILEN_LQR && \
andrewbonney	0:ec559500a63f	1154	p[1] == CILEN_LQR && \
andrewbonney	0:ec559500a63f	1155	p[0] == opt) { \
andrewbonney	0:ec559500a63f	1156	len -= CILEN_LQR; \
andrewbonney	0:ec559500a63f	1157	INCPTR(2, p); \
andrewbonney	0:ec559500a63f	1158	GETSHORT(cishort, p); \
andrewbonney	0:ec559500a63f	1159	GETLONG(cilong, p); \
andrewbonney	0:ec559500a63f	1160	/* Check rejected value. */ \
andrewbonney	0:ec559500a63f	1161	if (cishort != PPP_LQR \|\| cilong != val) { \
andrewbonney	0:ec559500a63f	1162	goto bad; \
andrewbonney	0:ec559500a63f	1163	} \
andrewbonney	0:ec559500a63f	1164	try.neg = 0; \
andrewbonney	0:ec559500a63f	1165	LCPDEBUG(LOG_INFO, ("lcp_rejci: LQR opt %d rejected\n", opt)); \
andrewbonney	0:ec559500a63f	1166	}
andrewbonney	0:ec559500a63f	1167	#define REJCICBCP(opt, neg, val) \
andrewbonney	0:ec559500a63f	1168	if (go->neg && \
andrewbonney	0:ec559500a63f	1169	len >= CILEN_CBCP && \
andrewbonney	0:ec559500a63f	1170	p[1] == CILEN_CBCP && \
andrewbonney	0:ec559500a63f	1171	p[0] == opt) { \
andrewbonney	0:ec559500a63f	1172	len -= CILEN_CBCP; \
andrewbonney	0:ec559500a63f	1173	INCPTR(2, p); \
andrewbonney	0:ec559500a63f	1174	GETCHAR(cichar, p); \
andrewbonney	0:ec559500a63f	1175	/* Check rejected value. */ \
andrewbonney	0:ec559500a63f	1176	if (cichar != val) { \
andrewbonney	0:ec559500a63f	1177	goto bad; \
andrewbonney	0:ec559500a63f	1178	} \
andrewbonney	0:ec559500a63f	1179	try.neg = 0; \
andrewbonney	0:ec559500a63f	1180	LCPDEBUG(LOG_INFO, ("lcp_rejci: Callback opt %d rejected\n", opt)); \
andrewbonney	0:ec559500a63f	1181	}
andrewbonney	0:ec559500a63f	1182
andrewbonney	0:ec559500a63f	1183	REJCISHORT(CI_MRU, neg_mru, go->mru);
andrewbonney	0:ec559500a63f	1184	REJCILONG(CI_ASYNCMAP, neg_asyncmap, go->asyncmap);
andrewbonney	0:ec559500a63f	1185	REJCICHAP(CI_AUTHTYPE, neg_chap, PPP_CHAP, go->chap_mdtype);
andrewbonney	0:ec559500a63f	1186	if (!go->neg_chap) {
andrewbonney	0:ec559500a63f	1187	REJCISHORT(CI_AUTHTYPE, neg_upap, PPP_PAP);
andrewbonney	0:ec559500a63f	1188	}
andrewbonney	0:ec559500a63f	1189	REJCILQR(CI_QUALITY, neg_lqr, go->lqr_period);
andrewbonney	0:ec559500a63f	1190	REJCICBCP(CI_CALLBACK, neg_cbcp, CBCP_OPT);
andrewbonney	0:ec559500a63f	1191	REJCILONG(CI_MAGICNUMBER, neg_magicnumber, go->magicnumber);
andrewbonney	0:ec559500a63f	1192	REJCIVOID(CI_PCOMPRESSION, neg_pcompression);
andrewbonney	0:ec559500a63f	1193	REJCIVOID(CI_ACCOMPRESSION, neg_accompression);
andrewbonney	0:ec559500a63f	1194
andrewbonney	0:ec559500a63f	1195	/*
andrewbonney	0:ec559500a63f	1196	* If there are any remaining CIs, then this packet is bad.
andrewbonney	0:ec559500a63f	1197	*/
andrewbonney	0:ec559500a63f	1198	if (len != 0) {
andrewbonney	0:ec559500a63f	1199	goto bad;
andrewbonney	0:ec559500a63f	1200	}
andrewbonney	0:ec559500a63f	1201	/*
andrewbonney	0:ec559500a63f	1202	* Now we can update state.
andrewbonney	0:ec559500a63f	1203	*/
andrewbonney	0:ec559500a63f	1204	if (f->state != LS_OPENED) {
andrewbonney	0:ec559500a63f	1205	*go = try;
andrewbonney	0:ec559500a63f	1206	}
andrewbonney	0:ec559500a63f	1207	return 1;
andrewbonney	0:ec559500a63f	1208
andrewbonney	0:ec559500a63f	1209	bad:
andrewbonney	0:ec559500a63f	1210	LCPDEBUG(LOG_WARNING, ("lcp_rejci: received bad Reject!\n"));
andrewbonney	0:ec559500a63f	1211	return 0;
andrewbonney	0:ec559500a63f	1212	}
andrewbonney	0:ec559500a63f	1213
andrewbonney	0:ec559500a63f	1214
andrewbonney	0:ec559500a63f	1215	/*
andrewbonney	0:ec559500a63f	1216	* lcp_reqci - Check the peer's requested CIs and send appropriate response.
andrewbonney	0:ec559500a63f	1217	*
andrewbonney	0:ec559500a63f	1218	* Returns: CONFACK, CONFNAK or CONFREJ and input packet modified
andrewbonney	0:ec559500a63f	1219	* appropriately. If reject_if_disagree is non-zero, doesn't return
andrewbonney	0:ec559500a63f	1220	* CONFNAK; returns CONFREJ if it can't return CONFACK.
andrewbonney	0:ec559500a63f	1221	*/
andrewbonney	0:ec559500a63f	1222	static int
andrewbonney	0:ec559500a63f	1223	lcp_reqci(fsm *f,
andrewbonney	0:ec559500a63f	1224	u_char inp, / Requested CIs */
andrewbonney	0:ec559500a63f	1225	int lenp, / Length of requested CIs */
andrewbonney	0:ec559500a63f	1226	int reject_if_disagree)
andrewbonney	0:ec559500a63f	1227	{
andrewbonney	0:ec559500a63f	1228	lcp_options *go = &lcp_gotoptions[f->unit];
andrewbonney	0:ec559500a63f	1229	lcp_options *ho = &lcp_hisoptions[f->unit];
andrewbonney	0:ec559500a63f	1230	lcp_options *ao = &lcp_allowoptions[f->unit];
andrewbonney	0:ec559500a63f	1231	u_char cip, next; /* Pointer to current and next CIs */
andrewbonney	0:ec559500a63f	1232	int cilen, citype; /* Parsed len, type */
andrewbonney	0:ec559500a63f	1233	u_char cichar; /* Parsed char value */
andrewbonney	0:ec559500a63f	1234	u_short cishort; /* Parsed short value */
andrewbonney	0:ec559500a63f	1235	u32_t cilong; /* Parse long value */
andrewbonney	0:ec559500a63f	1236	int rc = CONFACK; /* Final packet return code */
andrewbonney	0:ec559500a63f	1237	int orc; /* Individual option return code */
andrewbonney	0:ec559500a63f	1238	u_char p; / Pointer to next char to parse */
andrewbonney	0:ec559500a63f	1239	u_char rejp; / Pointer to next char in reject frame */
andrewbonney	0:ec559500a63f	1240	u_char nakp; / Pointer to next char in Nak frame */
andrewbonney	0:ec559500a63f	1241	int l = lenp; / Length left */
andrewbonney	0:ec559500a63f	1242	#if TRACELCP > 0
andrewbonney	0:ec559500a63f	1243	char traceBuf[80];
andrewbonney	0:ec559500a63f	1244	size_t traceNdx = 0;
andrewbonney	0:ec559500a63f	1245	#endif
andrewbonney	0:ec559500a63f	1246
andrewbonney	0:ec559500a63f	1247	/*
andrewbonney	0:ec559500a63f	1248	* Reset all his options.
andrewbonney	0:ec559500a63f	1249	*/
andrewbonney	0:ec559500a63f	1250	BZERO(ho, sizeof(*ho));
andrewbonney	0:ec559500a63f	1251
andrewbonney	0:ec559500a63f	1252	/*
andrewbonney	0:ec559500a63f	1253	* Process all his options.
andrewbonney	0:ec559500a63f	1254	*/
andrewbonney	0:ec559500a63f	1255	next = inp;
andrewbonney	0:ec559500a63f	1256	nakp = nak_buffer;
andrewbonney	0:ec559500a63f	1257	rejp = inp;
andrewbonney	0:ec559500a63f	1258	while (l) {
andrewbonney	0:ec559500a63f	1259	orc = CONFACK; /* Assume success */
andrewbonney	0:ec559500a63f	1260	cip = p = next; /* Remember begining of CI */
andrewbonney	0:ec559500a63f	1261	if (l < 2 \|\| /* Not enough data for CI header or */
andrewbonney	0:ec559500a63f	1262	p[1] < 2 \|\| /* CI length too small or */
andrewbonney	0:ec559500a63f	1263	p[1] > l) { /* CI length too big? */
andrewbonney	0:ec559500a63f	1264	LCPDEBUG(LOG_WARNING, ("lcp_reqci: bad CI length!\n"));
andrewbonney	0:ec559500a63f	1265	orc = CONFREJ; /* Reject bad CI */
andrewbonney	0:ec559500a63f	1266	cilen = l; /* Reject till end of packet */
andrewbonney	0:ec559500a63f	1267	l = 0; /* Don't loop again */
andrewbonney	0:ec559500a63f	1268	citype = 0;
andrewbonney	0:ec559500a63f	1269	goto endswitch;
andrewbonney	0:ec559500a63f	1270	}
andrewbonney	0:ec559500a63f	1271	GETCHAR(citype, p); /* Parse CI type */
andrewbonney	0:ec559500a63f	1272	GETCHAR(cilen, p); /* Parse CI length */
andrewbonney	0:ec559500a63f	1273	l -= cilen; /* Adjust remaining length */
andrewbonney	0:ec559500a63f	1274	next += cilen; /* Step to next CI */
andrewbonney	0:ec559500a63f	1275
andrewbonney	0:ec559500a63f	1276	switch (citype) { /* Check CI type */
andrewbonney	0:ec559500a63f	1277	case CI_MRU:
andrewbonney	0:ec559500a63f	1278	if (!ao->neg_mru) { /* Allow option? */
andrewbonney	0:ec559500a63f	1279	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - not allowed\n"));
andrewbonney	0:ec559500a63f	1280	orc = CONFREJ; /* Reject CI */
andrewbonney	0:ec559500a63f	1281	break;
andrewbonney	0:ec559500a63f	1282	} else if (cilen != CILEN_SHORT) { /* Check CI length */
andrewbonney	0:ec559500a63f	1283	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - bad length\n"));
andrewbonney	0:ec559500a63f	1284	orc = CONFREJ; /* Reject CI */
andrewbonney	0:ec559500a63f	1285	break;
andrewbonney	0:ec559500a63f	1286	}
andrewbonney	0:ec559500a63f	1287	GETSHORT(cishort, p); /* Parse MRU */
andrewbonney	0:ec559500a63f	1288
andrewbonney	0:ec559500a63f	1289	/*
andrewbonney	0:ec559500a63f	1290	* He must be able to receive at least our minimum.
andrewbonney	0:ec559500a63f	1291	* No need to check a maximum. If he sends a large number,
andrewbonney	0:ec559500a63f	1292	* we'll just ignore it.
andrewbonney	0:ec559500a63f	1293	*/
andrewbonney	0:ec559500a63f	1294	if (cishort < PPP_MINMRU) {
andrewbonney	0:ec559500a63f	1295	LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak - MRU too small\n"));
andrewbonney	0:ec559500a63f	1296	orc = CONFNAK; /* Nak CI */
andrewbonney	0:ec559500a63f	1297	PUTCHAR(CI_MRU, nakp);
andrewbonney	0:ec559500a63f	1298	PUTCHAR(CILEN_SHORT, nakp);
andrewbonney	0:ec559500a63f	1299	PUTSHORT(PPP_MINMRU, nakp); /* Give him a hint */
andrewbonney	0:ec559500a63f	1300	break;
andrewbonney	0:ec559500a63f	1301	}
andrewbonney	0:ec559500a63f	1302	ho->neg_mru = 1; /* Remember he sent MRU */
andrewbonney	0:ec559500a63f	1303	ho->mru = cishort; /* And remember value */
andrewbonney	0:ec559500a63f	1304	#if TRACELCP > 0
andrewbonney	0:ec559500a63f	1305	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MRU %d", cishort);
andrewbonney	0:ec559500a63f	1306	traceNdx = strlen(traceBuf);
andrewbonney	0:ec559500a63f	1307	#endif
andrewbonney	0:ec559500a63f	1308	break;
andrewbonney	0:ec559500a63f	1309
andrewbonney	0:ec559500a63f	1310	case CI_ASYNCMAP:
andrewbonney	0:ec559500a63f	1311	if (!ao->neg_asyncmap) {
andrewbonney	0:ec559500a63f	1312	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP not allowed\n"));
andrewbonney	0:ec559500a63f	1313	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1314	break;
andrewbonney	0:ec559500a63f	1315	} else if (cilen != CILEN_LONG) {
andrewbonney	0:ec559500a63f	1316	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP bad length\n"));
andrewbonney	0:ec559500a63f	1317	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1318	break;
andrewbonney	0:ec559500a63f	1319	}
andrewbonney	0:ec559500a63f	1320	GETLONG(cilong, p);
andrewbonney	0:ec559500a63f	1321
andrewbonney	0:ec559500a63f	1322	/*
andrewbonney	0:ec559500a63f	1323	* Asyncmap must have set at least the bits
andrewbonney	0:ec559500a63f	1324	* which are set in lcp_allowoptions[unit].asyncmap.
andrewbonney	0:ec559500a63f	1325	*/
andrewbonney	0:ec559500a63f	1326	if ((ao->asyncmap & ~cilong) != 0) {
andrewbonney	0:ec559500a63f	1327	LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak ASYNCMAP %lX missing %lX\n",
andrewbonney	0:ec559500a63f	1328	cilong, ao->asyncmap));
andrewbonney	0:ec559500a63f	1329	orc = CONFNAK;
andrewbonney	0:ec559500a63f	1330	PUTCHAR(CI_ASYNCMAP, nakp);
andrewbonney	0:ec559500a63f	1331	PUTCHAR(CILEN_LONG, nakp);
andrewbonney	0:ec559500a63f	1332	PUTLONG(ao->asyncmap \| cilong, nakp);
andrewbonney	0:ec559500a63f	1333	break;
andrewbonney	0:ec559500a63f	1334	}
andrewbonney	0:ec559500a63f	1335	ho->neg_asyncmap = 1;
andrewbonney	0:ec559500a63f	1336	ho->asyncmap = cilong;
andrewbonney	0:ec559500a63f	1337	#if TRACELCP > 0
andrewbonney	0:ec559500a63f	1338	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ASYNCMAP=%lX", cilong);
andrewbonney	0:ec559500a63f	1339	traceNdx = strlen(traceBuf);
andrewbonney	0:ec559500a63f	1340	#endif
andrewbonney	0:ec559500a63f	1341	break;
andrewbonney	0:ec559500a63f	1342
andrewbonney	0:ec559500a63f	1343	case CI_AUTHTYPE:
andrewbonney	0:ec559500a63f	1344	if (cilen < CILEN_SHORT) {
andrewbonney	0:ec559500a63f	1345	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE missing arg\n"));
andrewbonney	0:ec559500a63f	1346	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1347	break;
andrewbonney	0:ec559500a63f	1348	} else if (!(ao->neg_upap \|\| ao->neg_chap)) {
andrewbonney	0:ec559500a63f	1349	/*
andrewbonney	0:ec559500a63f	1350	* Reject the option if we're not willing to authenticate.
andrewbonney	0:ec559500a63f	1351	*/
andrewbonney	0:ec559500a63f	1352	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE not allowed\n"));
andrewbonney	0:ec559500a63f	1353	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1354	break;
andrewbonney	0:ec559500a63f	1355	}
andrewbonney	0:ec559500a63f	1356	GETSHORT(cishort, p);
andrewbonney	0:ec559500a63f	1357
andrewbonney	0:ec559500a63f	1358	/*
andrewbonney	0:ec559500a63f	1359	* Authtype must be UPAP or CHAP.
andrewbonney	0:ec559500a63f	1360	*
andrewbonney	0:ec559500a63f	1361	* Note: if both ao->neg_upap and ao->neg_chap are set,
andrewbonney	0:ec559500a63f	1362	* and the peer sends a Configure-Request with two
andrewbonney	0:ec559500a63f	1363	* authenticate-protocol requests, one for CHAP and one
andrewbonney	0:ec559500a63f	1364	* for UPAP, then we will reject the second request.
andrewbonney	0:ec559500a63f	1365	* Whether we end up doing CHAP or UPAP depends then on
andrewbonney	0:ec559500a63f	1366	* the ordering of the CIs in the peer's Configure-Request.
andrewbonney	0:ec559500a63f	1367	*/
andrewbonney	0:ec559500a63f	1368
andrewbonney	0:ec559500a63f	1369	if (cishort == PPP_PAP) {
andrewbonney	0:ec559500a63f	1370	if (ho->neg_chap) { /* we've already accepted CHAP */
andrewbonney	0:ec559500a63f	1371	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP already accepted\n"));
andrewbonney	0:ec559500a63f	1372	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1373	break;
andrewbonney	0:ec559500a63f	1374	} else if (cilen != CILEN_SHORT) {
andrewbonney	0:ec559500a63f	1375	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP bad len\n"));
andrewbonney	0:ec559500a63f	1376	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1377	break;
andrewbonney	0:ec559500a63f	1378	}
andrewbonney	0:ec559500a63f	1379	if (!ao->neg_upap) { /* we don't want to do PAP */
andrewbonney	0:ec559500a63f	1380	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE PAP not allowed\n"));
andrewbonney	0:ec559500a63f	1381	orc = CONFNAK; /* NAK it and suggest CHAP */
andrewbonney	0:ec559500a63f	1382	PUTCHAR(CI_AUTHTYPE, nakp);
andrewbonney	0:ec559500a63f	1383	PUTCHAR(CILEN_CHAP, nakp);
andrewbonney	0:ec559500a63f	1384	PUTSHORT(PPP_CHAP, nakp);
andrewbonney	0:ec559500a63f	1385	PUTCHAR(ao->chap_mdtype, nakp);
andrewbonney	0:ec559500a63f	1386	break;
andrewbonney	0:ec559500a63f	1387	}
andrewbonney	0:ec559500a63f	1388	ho->neg_upap = 1;
andrewbonney	0:ec559500a63f	1389	#if TRACELCP > 0
andrewbonney	0:ec559500a63f	1390	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PAP (%X)", cishort);
andrewbonney	0:ec559500a63f	1391	traceNdx = strlen(traceBuf);
andrewbonney	0:ec559500a63f	1392	#endif
andrewbonney	0:ec559500a63f	1393	break;
andrewbonney	0:ec559500a63f	1394	}
andrewbonney	0:ec559500a63f	1395	if (cishort == PPP_CHAP) {
andrewbonney	0:ec559500a63f	1396	if (ho->neg_upap) { /* we've already accepted PAP */
andrewbonney	0:ec559500a63f	1397	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP accepted PAP\n"));
andrewbonney	0:ec559500a63f	1398	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1399	break;
andrewbonney	0:ec559500a63f	1400	} else if (cilen != CILEN_CHAP) {
andrewbonney	0:ec559500a63f	1401	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP bad len\n"));
andrewbonney	0:ec559500a63f	1402	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1403	break;
andrewbonney	0:ec559500a63f	1404	}
andrewbonney	0:ec559500a63f	1405	if (!ao->neg_chap) { /* we don't want to do CHAP */
andrewbonney	0:ec559500a63f	1406	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP not allowed\n"));
andrewbonney	0:ec559500a63f	1407	orc = CONFNAK; /* NAK it and suggest PAP */
andrewbonney	0:ec559500a63f	1408	PUTCHAR(CI_AUTHTYPE, nakp);
andrewbonney	0:ec559500a63f	1409	PUTCHAR(CILEN_SHORT, nakp);
andrewbonney	0:ec559500a63f	1410	PUTSHORT(PPP_PAP, nakp);
andrewbonney	0:ec559500a63f	1411	break;
andrewbonney	0:ec559500a63f	1412	}
andrewbonney	0:ec559500a63f	1413	GETCHAR(cichar, p); /* get digest type*/
andrewbonney	0:ec559500a63f	1414	if (cichar != CHAP_DIGEST_MD5
andrewbonney	0:ec559500a63f	1415	#if MSCHAP_SUPPORT
andrewbonney	0:ec559500a63f	1416	&& cichar != CHAP_MICROSOFT
andrewbonney	0:ec559500a63f	1417	#endif
andrewbonney	0:ec559500a63f	1418	) {
andrewbonney	0:ec559500a63f	1419	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP digest=%d\n", (int)cichar));
andrewbonney	0:ec559500a63f	1420	orc = CONFNAK;
andrewbonney	0:ec559500a63f	1421	PUTCHAR(CI_AUTHTYPE, nakp);
andrewbonney	0:ec559500a63f	1422	PUTCHAR(CILEN_CHAP, nakp);
andrewbonney	0:ec559500a63f	1423	PUTSHORT(PPP_CHAP, nakp);
andrewbonney	0:ec559500a63f	1424	PUTCHAR(ao->chap_mdtype, nakp);
andrewbonney	0:ec559500a63f	1425	break;
andrewbonney	0:ec559500a63f	1426	}
andrewbonney	0:ec559500a63f	1427	#if TRACELCP > 0
andrewbonney	0:ec559500a63f	1428	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CHAP %X,%d", cishort, (int)cichar);
andrewbonney	0:ec559500a63f	1429	traceNdx = strlen(traceBuf);
andrewbonney	0:ec559500a63f	1430	#endif
andrewbonney	0:ec559500a63f	1431	ho->chap_mdtype = cichar; /* save md type */
andrewbonney	0:ec559500a63f	1432	ho->neg_chap = 1;
andrewbonney	0:ec559500a63f	1433	break;
andrewbonney	0:ec559500a63f	1434	}
andrewbonney	0:ec559500a63f	1435
andrewbonney	0:ec559500a63f	1436	/*
andrewbonney	0:ec559500a63f	1437	* We don't recognize the protocol they're asking for.
andrewbonney	0:ec559500a63f	1438	* Nak it with something we're willing to do.
andrewbonney	0:ec559500a63f	1439	* (At this point we know ao->neg_upap \|\| ao->neg_chap.)
andrewbonney	0:ec559500a63f	1440	*/
andrewbonney	0:ec559500a63f	1441	orc = CONFNAK;
andrewbonney	0:ec559500a63f	1442	PUTCHAR(CI_AUTHTYPE, nakp);
andrewbonney	0:ec559500a63f	1443	if (ao->neg_chap) {
andrewbonney	0:ec559500a63f	1444	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req CHAP\n", cishort));
andrewbonney	0:ec559500a63f	1445	PUTCHAR(CILEN_CHAP, nakp);
andrewbonney	0:ec559500a63f	1446	PUTSHORT(PPP_CHAP, nakp);
andrewbonney	0:ec559500a63f	1447	PUTCHAR(ao->chap_mdtype, nakp);
andrewbonney	0:ec559500a63f	1448	} else {
andrewbonney	0:ec559500a63f	1449	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req PAP\n", cishort));
andrewbonney	0:ec559500a63f	1450	PUTCHAR(CILEN_SHORT, nakp);
andrewbonney	0:ec559500a63f	1451	PUTSHORT(PPP_PAP, nakp);
andrewbonney	0:ec559500a63f	1452	}
andrewbonney	0:ec559500a63f	1453	break;
andrewbonney	0:ec559500a63f	1454
andrewbonney	0:ec559500a63f	1455	case CI_QUALITY:
andrewbonney	0:ec559500a63f	1456	GETSHORT(cishort, p);
andrewbonney	0:ec559500a63f	1457	GETLONG(cilong, p);
andrewbonney	0:ec559500a63f	1458	#if TRACELCP > 0
andrewbonney	0:ec559500a63f	1459	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " QUALITY (%x %x)", cishort, (unsigned int) cilong);
andrewbonney	0:ec559500a63f	1460	traceNdx = strlen(traceBuf);
andrewbonney	0:ec559500a63f	1461	#endif
andrewbonney	0:ec559500a63f	1462
andrewbonney	0:ec559500a63f	1463	if (!ao->neg_lqr \|\|
andrewbonney	0:ec559500a63f	1464	cilen != CILEN_LQR) {
andrewbonney	0:ec559500a63f	1465	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1466	break;
andrewbonney	0:ec559500a63f	1467	}
andrewbonney	0:ec559500a63f	1468
andrewbonney	0:ec559500a63f	1469	/*
andrewbonney	0:ec559500a63f	1470	* Check the protocol and the reporting period.
andrewbonney	0:ec559500a63f	1471	* XXX When should we Nak this, and what with?
andrewbonney	0:ec559500a63f	1472	*/
andrewbonney	0:ec559500a63f	1473	if (cishort != PPP_LQR) {
andrewbonney	0:ec559500a63f	1474	orc = CONFNAK;
andrewbonney	0:ec559500a63f	1475	PUTCHAR(CI_QUALITY, nakp);
andrewbonney	0:ec559500a63f	1476	PUTCHAR(CILEN_LQR, nakp);
andrewbonney	0:ec559500a63f	1477	PUTSHORT(PPP_LQR, nakp);
andrewbonney	0:ec559500a63f	1478	PUTLONG(ao->lqr_period, nakp);
andrewbonney	0:ec559500a63f	1479	break;
andrewbonney	0:ec559500a63f	1480	}
andrewbonney	0:ec559500a63f	1481	break;
andrewbonney	0:ec559500a63f	1482
andrewbonney	0:ec559500a63f	1483	case CI_MAGICNUMBER:
andrewbonney	0:ec559500a63f	1484	if (!(ao->neg_magicnumber \|\| go->neg_magicnumber) \|\|
andrewbonney	0:ec559500a63f	1485	cilen != CILEN_LONG) {
andrewbonney	0:ec559500a63f	1486	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1487	break;
andrewbonney	0:ec559500a63f	1488	}
andrewbonney	0:ec559500a63f	1489	GETLONG(cilong, p);
andrewbonney	0:ec559500a63f	1490	#if TRACELCP > 0
andrewbonney	0:ec559500a63f	1491	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MAGICNUMBER (%lX)", cilong);
andrewbonney	0:ec559500a63f	1492	traceNdx = strlen(traceBuf);
andrewbonney	0:ec559500a63f	1493	#endif
andrewbonney	0:ec559500a63f	1494
andrewbonney	0:ec559500a63f	1495	/*
andrewbonney	0:ec559500a63f	1496	* He must have a different magic number.
andrewbonney	0:ec559500a63f	1497	*/
andrewbonney	0:ec559500a63f	1498	if (go->neg_magicnumber &&
andrewbonney	0:ec559500a63f	1499	cilong == go->magicnumber) {
andrewbonney	0:ec559500a63f	1500	cilong = magic(); /* Don't put magic() inside macro! */
andrewbonney	0:ec559500a63f	1501	orc = CONFNAK;
andrewbonney	0:ec559500a63f	1502	PUTCHAR(CI_MAGICNUMBER, nakp);
andrewbonney	0:ec559500a63f	1503	PUTCHAR(CILEN_LONG, nakp);
andrewbonney	0:ec559500a63f	1504	PUTLONG(cilong, nakp);
andrewbonney	0:ec559500a63f	1505	break;
andrewbonney	0:ec559500a63f	1506	}
andrewbonney	0:ec559500a63f	1507	ho->neg_magicnumber = 1;
andrewbonney	0:ec559500a63f	1508	ho->magicnumber = cilong;
andrewbonney	0:ec559500a63f	1509	break;
andrewbonney	0:ec559500a63f	1510
andrewbonney	0:ec559500a63f	1511
andrewbonney	0:ec559500a63f	1512	case CI_PCOMPRESSION:
andrewbonney	0:ec559500a63f	1513	#if TRACELCP > 0
andrewbonney	0:ec559500a63f	1514	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PCOMPRESSION");
andrewbonney	0:ec559500a63f	1515	traceNdx = strlen(traceBuf);
andrewbonney	0:ec559500a63f	1516	#endif
andrewbonney	0:ec559500a63f	1517	if (!ao->neg_pcompression \|\|
andrewbonney	0:ec559500a63f	1518	cilen != CILEN_VOID) {
andrewbonney	0:ec559500a63f	1519	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1520	break;
andrewbonney	0:ec559500a63f	1521	}
andrewbonney	0:ec559500a63f	1522	ho->neg_pcompression = 1;
andrewbonney	0:ec559500a63f	1523	break;
andrewbonney	0:ec559500a63f	1524
andrewbonney	0:ec559500a63f	1525	case CI_ACCOMPRESSION:
andrewbonney	0:ec559500a63f	1526	#if TRACELCP > 0
andrewbonney	0:ec559500a63f	1527	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ACCOMPRESSION");
andrewbonney	0:ec559500a63f	1528	traceNdx = strlen(traceBuf);
andrewbonney	0:ec559500a63f	1529	#endif
andrewbonney	0:ec559500a63f	1530	if (!ao->neg_accompression \|\|
andrewbonney	0:ec559500a63f	1531	cilen != CILEN_VOID) {
andrewbonney	0:ec559500a63f	1532	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1533	break;
andrewbonney	0:ec559500a63f	1534	}
andrewbonney	0:ec559500a63f	1535	ho->neg_accompression = 1;
andrewbonney	0:ec559500a63f	1536	break;
andrewbonney	0:ec559500a63f	1537
andrewbonney	0:ec559500a63f	1538	case CI_MRRU:
andrewbonney	0:ec559500a63f	1539	#if TRACELCP > 0
andrewbonney	0:ec559500a63f	1540	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_MRRU");
andrewbonney	0:ec559500a63f	1541	traceNdx = strlen(traceBuf);
andrewbonney	0:ec559500a63f	1542	#endif
andrewbonney	0:ec559500a63f	1543	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1544	break;
andrewbonney	0:ec559500a63f	1545
andrewbonney	0:ec559500a63f	1546	case CI_SSNHF:
andrewbonney	0:ec559500a63f	1547	#if TRACELCP > 0
andrewbonney	0:ec559500a63f	1548	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_SSNHF");
andrewbonney	0:ec559500a63f	1549	traceNdx = strlen(traceBuf);
andrewbonney	0:ec559500a63f	1550	#endif
andrewbonney	0:ec559500a63f	1551	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1552	break;
andrewbonney	0:ec559500a63f	1553
andrewbonney	0:ec559500a63f	1554	case CI_EPDISC:
andrewbonney	0:ec559500a63f	1555	#if TRACELCP > 0
andrewbonney	0:ec559500a63f	1556	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_EPDISC");
andrewbonney	0:ec559500a63f	1557	traceNdx = strlen(traceBuf);
andrewbonney	0:ec559500a63f	1558	#endif
andrewbonney	0:ec559500a63f	1559	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1560	break;
andrewbonney	0:ec559500a63f	1561
andrewbonney	0:ec559500a63f	1562	default:
andrewbonney	0:ec559500a63f	1563	#if TRACELCP
andrewbonney	0:ec559500a63f	1564	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " unknown %d", citype);
andrewbonney	0:ec559500a63f	1565	traceNdx = strlen(traceBuf);
andrewbonney	0:ec559500a63f	1566	#endif
andrewbonney	0:ec559500a63f	1567	orc = CONFREJ;
andrewbonney	0:ec559500a63f	1568	break;
andrewbonney	0:ec559500a63f	1569	}
andrewbonney	0:ec559500a63f	1570
andrewbonney	0:ec559500a63f	1571	endswitch:
andrewbonney	0:ec559500a63f	1572	#if TRACELCP
andrewbonney	0:ec559500a63f	1573	if (traceNdx >= 80 - 32) {
andrewbonney	0:ec559500a63f	1574	LCPDEBUG(LOG_INFO, ("lcp_reqci: rcvd%s\n", traceBuf));
andrewbonney	0:ec559500a63f	1575	traceNdx = 0;
andrewbonney	0:ec559500a63f	1576	}
andrewbonney	0:ec559500a63f	1577	#endif
andrewbonney	0:ec559500a63f	1578	if (orc == CONFACK && /* Good CI */
andrewbonney	0:ec559500a63f	1579	rc != CONFACK) { /* but prior CI wasnt? */
andrewbonney	0:ec559500a63f	1580	continue; /* Don't send this one */
andrewbonney	0:ec559500a63f	1581	}
andrewbonney	0:ec559500a63f	1582
andrewbonney	0:ec559500a63f	1583	if (orc == CONFNAK) { /* Nak this CI? */
andrewbonney	0:ec559500a63f	1584	if (reject_if_disagree /* Getting fed up with sending NAKs? */
andrewbonney	0:ec559500a63f	1585	&& citype != CI_MAGICNUMBER) {
andrewbonney	0:ec559500a63f	1586	orc = CONFREJ; /* Get tough if so */
andrewbonney	0:ec559500a63f	1587	} else {
andrewbonney	0:ec559500a63f	1588	if (rc == CONFREJ) { /* Rejecting prior CI? */
andrewbonney	0:ec559500a63f	1589	continue; /* Don't send this one */
andrewbonney	0:ec559500a63f	1590	}
andrewbonney	0:ec559500a63f	1591	rc = CONFNAK;
andrewbonney	0:ec559500a63f	1592	}
andrewbonney	0:ec559500a63f	1593	}
andrewbonney	0:ec559500a63f	1594	if (orc == CONFREJ) { /* Reject this CI */
andrewbonney	0:ec559500a63f	1595	rc = CONFREJ;
andrewbonney	0:ec559500a63f	1596	if (cip != rejp) { /* Need to move rejected CI? */
andrewbonney	0:ec559500a63f	1597	BCOPY(cip, rejp, cilen); /* Move it */
andrewbonney	0:ec559500a63f	1598	}
andrewbonney	0:ec559500a63f	1599	INCPTR(cilen, rejp); /* Update output pointer */
andrewbonney	0:ec559500a63f	1600	}
andrewbonney	0:ec559500a63f	1601	}
andrewbonney	0:ec559500a63f	1602
andrewbonney	0:ec559500a63f	1603	/*
andrewbonney	0:ec559500a63f	1604	* If we wanted to send additional NAKs (for unsent CIs), the
andrewbonney	0:ec559500a63f	1605	* code would go here. The extra NAKs would go at *nakp.
andrewbonney	0:ec559500a63f	1606	* At present there are no cases where we want to ask the
andrewbonney	0:ec559500a63f	1607	* peer to negotiate an option.
andrewbonney	0:ec559500a63f	1608	*/
andrewbonney	0:ec559500a63f	1609
andrewbonney	0:ec559500a63f	1610	switch (rc) {
andrewbonney	0:ec559500a63f	1611	case CONFACK:
andrewbonney	0:ec559500a63f	1612	*lenp = (int)(next - inp);
andrewbonney	0:ec559500a63f	1613	break;
andrewbonney	0:ec559500a63f	1614	case CONFNAK:
andrewbonney	0:ec559500a63f	1615	/*
andrewbonney	0:ec559500a63f	1616	* Copy the Nak'd options from the nak_buffer to the caller's buffer.
andrewbonney	0:ec559500a63f	1617	*/
andrewbonney	0:ec559500a63f	1618	*lenp = (int)(nakp - nak_buffer);
andrewbonney	0:ec559500a63f	1619	BCOPY(nak_buffer, inp, *lenp);
andrewbonney	0:ec559500a63f	1620	break;
andrewbonney	0:ec559500a63f	1621	case CONFREJ:
andrewbonney	0:ec559500a63f	1622	*lenp = (int)(rejp - inp);
andrewbonney	0:ec559500a63f	1623	break;
andrewbonney	0:ec559500a63f	1624	}
andrewbonney	0:ec559500a63f	1625
andrewbonney	0:ec559500a63f	1626	#if TRACELCP > 0
andrewbonney	0:ec559500a63f	1627	if (traceNdx > 0) {
andrewbonney	0:ec559500a63f	1628	LCPDEBUG(LOG_INFO, ("lcp_reqci: %s\n", traceBuf));
andrewbonney	0:ec559500a63f	1629	}
andrewbonney	0:ec559500a63f	1630	#endif
andrewbonney	0:ec559500a63f	1631	LCPDEBUG(LOG_INFO, ("lcp_reqci: returning CONF%s.\n", CODENAME(rc)));
andrewbonney	0:ec559500a63f	1632	return (rc); /* Return final code */
andrewbonney	0:ec559500a63f	1633	}
andrewbonney	0:ec559500a63f	1634
andrewbonney	0:ec559500a63f	1635
andrewbonney	0:ec559500a63f	1636	/*
andrewbonney	0:ec559500a63f	1637	* lcp_up - LCP has come UP.
andrewbonney	0:ec559500a63f	1638	*/
andrewbonney	0:ec559500a63f	1639	static void
andrewbonney	0:ec559500a63f	1640	lcp_up(fsm *f)
andrewbonney	0:ec559500a63f	1641	{
andrewbonney	0:ec559500a63f	1642	lcp_options *wo = &lcp_wantoptions[f->unit];
andrewbonney	0:ec559500a63f	1643	lcp_options *ho = &lcp_hisoptions[f->unit];
andrewbonney	0:ec559500a63f	1644	lcp_options *go = &lcp_gotoptions[f->unit];
andrewbonney	0:ec559500a63f	1645	lcp_options *ao = &lcp_allowoptions[f->unit];
andrewbonney	0:ec559500a63f	1646
andrewbonney	0:ec559500a63f	1647	if (!go->neg_magicnumber) {
andrewbonney	0:ec559500a63f	1648	go->magicnumber = 0;
andrewbonney	0:ec559500a63f	1649	}
andrewbonney	0:ec559500a63f	1650	if (!ho->neg_magicnumber) {
andrewbonney	0:ec559500a63f	1651	ho->magicnumber = 0;
andrewbonney	0:ec559500a63f	1652	}
andrewbonney	0:ec559500a63f	1653
andrewbonney	0:ec559500a63f	1654	/*
andrewbonney	0:ec559500a63f	1655	* Set our MTU to the smaller of the MTU we wanted and
andrewbonney	0:ec559500a63f	1656	* the MRU our peer wanted. If we negotiated an MRU,
andrewbonney	0:ec559500a63f	1657	* set our MRU to the larger of value we wanted and
andrewbonney	0:ec559500a63f	1658	* the value we got in the negotiation.
andrewbonney	0:ec559500a63f	1659	*/
andrewbonney	0:ec559500a63f	1660	ppp_send_config(f->unit, LWIP_MIN(ao->mru, (ho->neg_mru? ho->mru: PPP_MRU)),
andrewbonney	0:ec559500a63f	1661	(ho->neg_asyncmap? ho->asyncmap: 0xffffffffl),
andrewbonney	0:ec559500a63f	1662	ho->neg_pcompression, ho->neg_accompression);
andrewbonney	0:ec559500a63f	1663	/*
andrewbonney	0:ec559500a63f	1664	* If the asyncmap hasn't been negotiated, we really should
andrewbonney	0:ec559500a63f	1665	* set the receive asyncmap to ffffffff, but we set it to 0
andrewbonney	0:ec559500a63f	1666	* for backwards contemptibility.
andrewbonney	0:ec559500a63f	1667	*/
andrewbonney	0:ec559500a63f	1668	ppp_recv_config(f->unit, (go->neg_mru? LWIP_MAX(wo->mru, go->mru): PPP_MRU),
andrewbonney	0:ec559500a63f	1669	(go->neg_asyncmap? go->asyncmap: 0x00000000),
andrewbonney	0:ec559500a63f	1670	go->neg_pcompression, go->neg_accompression);
andrewbonney	0:ec559500a63f	1671
andrewbonney	0:ec559500a63f	1672	if (ho->neg_mru) {
andrewbonney	0:ec559500a63f	1673	peer_mru[f->unit] = ho->mru;
andrewbonney	0:ec559500a63f	1674	}
andrewbonney	0:ec559500a63f	1675
andrewbonney	0:ec559500a63f	1676	lcp_echo_lowerup(f->unit); /* Enable echo messages */
andrewbonney	0:ec559500a63f	1677
andrewbonney	0:ec559500a63f	1678	link_established(f->unit); /* The link is up; authenticate now */
andrewbonney	0:ec559500a63f	1679	}
andrewbonney	0:ec559500a63f	1680
andrewbonney	0:ec559500a63f	1681
andrewbonney	0:ec559500a63f	1682	/*
andrewbonney	0:ec559500a63f	1683	* lcp_down - LCP has gone DOWN.
andrewbonney	0:ec559500a63f	1684	*
andrewbonney	0:ec559500a63f	1685	* Alert other protocols.
andrewbonney	0:ec559500a63f	1686	*/
andrewbonney	0:ec559500a63f	1687	static void
andrewbonney	0:ec559500a63f	1688	lcp_down(fsm *f)
andrewbonney	0:ec559500a63f	1689	{
andrewbonney	0:ec559500a63f	1690	lcp_options *go = &lcp_gotoptions[f->unit];
andrewbonney	0:ec559500a63f	1691
andrewbonney	0:ec559500a63f	1692	lcp_echo_lowerdown(f->unit);
andrewbonney	0:ec559500a63f	1693
andrewbonney	0:ec559500a63f	1694	link_down(f->unit);
andrewbonney	0:ec559500a63f	1695
andrewbonney	0:ec559500a63f	1696	ppp_send_config(f->unit, PPP_MRU, 0xffffffffl, 0, 0);
andrewbonney	0:ec559500a63f	1697	ppp_recv_config(f->unit, PPP_MRU,
andrewbonney	0:ec559500a63f	1698	(go->neg_asyncmap? go->asyncmap: 0x00000000),
andrewbonney	0:ec559500a63f	1699	go->neg_pcompression, go->neg_accompression);
andrewbonney	0:ec559500a63f	1700	peer_mru[f->unit] = PPP_MRU;
andrewbonney	0:ec559500a63f	1701	}
andrewbonney	0:ec559500a63f	1702
andrewbonney	0:ec559500a63f	1703
andrewbonney	0:ec559500a63f	1704	/*
andrewbonney	0:ec559500a63f	1705	* lcp_starting - LCP needs the lower layer up.
andrewbonney	0:ec559500a63f	1706	*/
andrewbonney	0:ec559500a63f	1707	static void
andrewbonney	0:ec559500a63f	1708	lcp_starting(fsm *f)
andrewbonney	0:ec559500a63f	1709	{
andrewbonney	0:ec559500a63f	1710	link_required(f->unit); /* lwip: currently does nothing */
andrewbonney	0:ec559500a63f	1711	}
andrewbonney	0:ec559500a63f	1712
andrewbonney	0:ec559500a63f	1713
andrewbonney	0:ec559500a63f	1714	/*
andrewbonney	0:ec559500a63f	1715	* lcp_finished - LCP has finished with the lower layer.
andrewbonney	0:ec559500a63f	1716	*/
andrewbonney	0:ec559500a63f	1717	static void
andrewbonney	0:ec559500a63f	1718	lcp_finished(fsm *f)
andrewbonney	0:ec559500a63f	1719	{
andrewbonney	0:ec559500a63f	1720	link_terminated(f->unit); /* we are finished with the link */
andrewbonney	0:ec559500a63f	1721	}
andrewbonney	0:ec559500a63f	1722
andrewbonney	0:ec559500a63f	1723
andrewbonney	0:ec559500a63f	1724	#if PPP_ADDITIONAL_CALLBACKS
andrewbonney	0:ec559500a63f	1725	/*
andrewbonney	0:ec559500a63f	1726	* print_string - print a readable representation of a string using
andrewbonney	0:ec559500a63f	1727	* printer.
andrewbonney	0:ec559500a63f	1728	*/
andrewbonney	0:ec559500a63f	1729	static void
andrewbonney	0:ec559500a63f	1730	print_string( char p, int len, void (printer) (void , char , ...), void *arg)
andrewbonney	0:ec559500a63f	1731	{
andrewbonney	0:ec559500a63f	1732	int c;
andrewbonney	0:ec559500a63f	1733
andrewbonney	0:ec559500a63f	1734	printer(arg, "\"");
andrewbonney	0:ec559500a63f	1735	for (; len > 0; --len) {
andrewbonney	0:ec559500a63f	1736	c = *p++;
andrewbonney	0:ec559500a63f	1737	if (' ' <= c && c <= '~') {
andrewbonney	0:ec559500a63f	1738	if (c == '\\' \|\| c == '"') {
andrewbonney	0:ec559500a63f	1739	printer(arg, "\\");
andrewbonney	0:ec559500a63f	1740	}
andrewbonney	0:ec559500a63f	1741	printer(arg, "%c", c);
andrewbonney	0:ec559500a63f	1742	} else {
andrewbonney	0:ec559500a63f	1743	switch (c) {
andrewbonney	0:ec559500a63f	1744	case '\n':
andrewbonney	0:ec559500a63f	1745	printer(arg, "\\n");
andrewbonney	0:ec559500a63f	1746	break;
andrewbonney	0:ec559500a63f	1747	case '\r':
andrewbonney	0:ec559500a63f	1748	printer(arg, "\\r");
andrewbonney	0:ec559500a63f	1749	break;
andrewbonney	0:ec559500a63f	1750	case '\t':
andrewbonney	0:ec559500a63f	1751	printer(arg, "\\t");
andrewbonney	0:ec559500a63f	1752	break;
andrewbonney	0:ec559500a63f	1753	default:
andrewbonney	0:ec559500a63f	1754	printer(arg, "\\%.3o", c);
andrewbonney	0:ec559500a63f	1755	}
andrewbonney	0:ec559500a63f	1756	}
andrewbonney	0:ec559500a63f	1757	}
andrewbonney	0:ec559500a63f	1758	printer(arg, "\"");
andrewbonney	0:ec559500a63f	1759	}
andrewbonney	0:ec559500a63f	1760
andrewbonney	0:ec559500a63f	1761
andrewbonney	0:ec559500a63f	1762	/*
andrewbonney	0:ec559500a63f	1763	* lcp_printpkt - print the contents of an LCP packet.
andrewbonney	0:ec559500a63f	1764	*/
andrewbonney	0:ec559500a63f	1765	static char *lcp_codenames[] = {
andrewbonney	0:ec559500a63f	1766	"ConfReq", "ConfAck", "ConfNak", "ConfRej",
andrewbonney	0:ec559500a63f	1767	"TermReq", "TermAck", "CodeRej", "ProtRej",
andrewbonney	0:ec559500a63f	1768	"EchoReq", "EchoRep", "DiscReq"
andrewbonney	0:ec559500a63f	1769	};
andrewbonney	0:ec559500a63f	1770
andrewbonney	0:ec559500a63f	1771	static int
andrewbonney	0:ec559500a63f	1772	lcp_printpkt( u_char p, int plen, void (printer) (void , char , ...), void *arg)
andrewbonney	0:ec559500a63f	1773	{
andrewbonney	0:ec559500a63f	1774	int code, id, len, olen;
andrewbonney	0:ec559500a63f	1775	u_char pstart, optend;
andrewbonney	0:ec559500a63f	1776	u_short cishort;
andrewbonney	0:ec559500a63f	1777	u32_t cilong;
andrewbonney	0:ec559500a63f	1778
andrewbonney	0:ec559500a63f	1779	if (plen < HEADERLEN) {
andrewbonney	0:ec559500a63f	1780	return 0;
andrewbonney	0:ec559500a63f	1781	}
andrewbonney	0:ec559500a63f	1782	pstart = p;
andrewbonney	0:ec559500a63f	1783	GETCHAR(code, p);
andrewbonney	0:ec559500a63f	1784	GETCHAR(id, p);
andrewbonney	0:ec559500a63f	1785	GETSHORT(len, p);
andrewbonney	0:ec559500a63f	1786	if (len < HEADERLEN \|\| len > plen) {
andrewbonney	0:ec559500a63f	1787	return 0;
andrewbonney	0:ec559500a63f	1788	}
andrewbonney	0:ec559500a63f	1789
andrewbonney	0:ec559500a63f	1790	if (code >= 1 && code <= sizeof(lcp_codenames) / sizeof(char *)) {
andrewbonney	0:ec559500a63f	1791	printer(arg, " %s", lcp_codenames[code-1]);
andrewbonney	0:ec559500a63f	1792	} else {
andrewbonney	0:ec559500a63f	1793	printer(arg, " code=0x%x", code);
andrewbonney	0:ec559500a63f	1794	}
andrewbonney	0:ec559500a63f	1795	printer(arg, " id=0x%x", id);
andrewbonney	0:ec559500a63f	1796	len -= HEADERLEN;
andrewbonney	0:ec559500a63f	1797	switch (code) {
andrewbonney	0:ec559500a63f	1798	case CONFREQ:
andrewbonney	0:ec559500a63f	1799	case CONFACK:
andrewbonney	0:ec559500a63f	1800	case CONFNAK:
andrewbonney	0:ec559500a63f	1801	case CONFREJ:
andrewbonney	0:ec559500a63f	1802	/* print option list */
andrewbonney	0:ec559500a63f	1803	while (len >= 2) {
andrewbonney	0:ec559500a63f	1804	GETCHAR(code, p);
andrewbonney	0:ec559500a63f	1805	GETCHAR(olen, p);
andrewbonney	0:ec559500a63f	1806	p -= 2;
andrewbonney	0:ec559500a63f	1807	if (olen < 2 \|\| olen > len) {
andrewbonney	0:ec559500a63f	1808	break;
andrewbonney	0:ec559500a63f	1809	}
andrewbonney	0:ec559500a63f	1810	printer(arg, " <");
andrewbonney	0:ec559500a63f	1811	len -= olen;
andrewbonney	0:ec559500a63f	1812	optend = p + olen;
andrewbonney	0:ec559500a63f	1813	switch (code) {
andrewbonney	0:ec559500a63f	1814	case CI_MRU:
andrewbonney	0:ec559500a63f	1815	if (olen == CILEN_SHORT) {
andrewbonney	0:ec559500a63f	1816	p += 2;
andrewbonney	0:ec559500a63f	1817	GETSHORT(cishort, p);
andrewbonney	0:ec559500a63f	1818	printer(arg, "mru %d", cishort);
andrewbonney	0:ec559500a63f	1819	}
andrewbonney	0:ec559500a63f	1820	break;
andrewbonney	0:ec559500a63f	1821	case CI_ASYNCMAP:
andrewbonney	0:ec559500a63f	1822	if (olen == CILEN_LONG) {
andrewbonney	0:ec559500a63f	1823	p += 2;
andrewbonney	0:ec559500a63f	1824	GETLONG(cilong, p);
andrewbonney	0:ec559500a63f	1825	printer(arg, "asyncmap 0x%lx", cilong);
andrewbonney	0:ec559500a63f	1826	}
andrewbonney	0:ec559500a63f	1827	break;
andrewbonney	0:ec559500a63f	1828	case CI_AUTHTYPE:
andrewbonney	0:ec559500a63f	1829	if (olen >= CILEN_SHORT) {
andrewbonney	0:ec559500a63f	1830	p += 2;
andrewbonney	0:ec559500a63f	1831	printer(arg, "auth ");
andrewbonney	0:ec559500a63f	1832	GETSHORT(cishort, p);
andrewbonney	0:ec559500a63f	1833	switch (cishort) {
andrewbonney	0:ec559500a63f	1834	case PPP_PAP:
andrewbonney	0:ec559500a63f	1835	printer(arg, "pap");
andrewbonney	0:ec559500a63f	1836	break;
andrewbonney	0:ec559500a63f	1837	case PPP_CHAP:
andrewbonney	0:ec559500a63f	1838	printer(arg, "chap");
andrewbonney	0:ec559500a63f	1839	break;
andrewbonney	0:ec559500a63f	1840	default:
andrewbonney	0:ec559500a63f	1841	printer(arg, "0x%x", cishort);
andrewbonney	0:ec559500a63f	1842	}
andrewbonney	0:ec559500a63f	1843	}
andrewbonney	0:ec559500a63f	1844	break;
andrewbonney	0:ec559500a63f	1845	case CI_QUALITY:
andrewbonney	0:ec559500a63f	1846	if (olen >= CILEN_SHORT) {
andrewbonney	0:ec559500a63f	1847	p += 2;
andrewbonney	0:ec559500a63f	1848	printer(arg, "quality ");
andrewbonney	0:ec559500a63f	1849	GETSHORT(cishort, p);
andrewbonney	0:ec559500a63f	1850	switch (cishort) {
andrewbonney	0:ec559500a63f	1851	case PPP_LQR:
andrewbonney	0:ec559500a63f	1852	printer(arg, "lqr");
andrewbonney	0:ec559500a63f	1853	break;
andrewbonney	0:ec559500a63f	1854	default:
andrewbonney	0:ec559500a63f	1855	printer(arg, "0x%x", cishort);
andrewbonney	0:ec559500a63f	1856	}
andrewbonney	0:ec559500a63f	1857	}
andrewbonney	0:ec559500a63f	1858	break;
andrewbonney	0:ec559500a63f	1859	case CI_CALLBACK:
andrewbonney	0:ec559500a63f	1860	if (olen >= CILEN_CHAR) {
andrewbonney	0:ec559500a63f	1861	p += 2;
andrewbonney	0:ec559500a63f	1862	printer(arg, "callback ");
andrewbonney	0:ec559500a63f	1863	GETSHORT(cishort, p);
andrewbonney	0:ec559500a63f	1864	switch (cishort) {
andrewbonney	0:ec559500a63f	1865	case CBCP_OPT:
andrewbonney	0:ec559500a63f	1866	printer(arg, "CBCP");
andrewbonney	0:ec559500a63f	1867	break;
andrewbonney	0:ec559500a63f	1868	default:
andrewbonney	0:ec559500a63f	1869	printer(arg, "0x%x", cishort);
andrewbonney	0:ec559500a63f	1870	}
andrewbonney	0:ec559500a63f	1871	}
andrewbonney	0:ec559500a63f	1872	break;
andrewbonney	0:ec559500a63f	1873	case CI_MAGICNUMBER:
andrewbonney	0:ec559500a63f	1874	if (olen == CILEN_LONG) {
andrewbonney	0:ec559500a63f	1875	p += 2;
andrewbonney	0:ec559500a63f	1876	GETLONG(cilong, p);
andrewbonney	0:ec559500a63f	1877	printer(arg, "magic 0x%x", cilong);
andrewbonney	0:ec559500a63f	1878	}
andrewbonney	0:ec559500a63f	1879	break;
andrewbonney	0:ec559500a63f	1880	case CI_PCOMPRESSION:
andrewbonney	0:ec559500a63f	1881	if (olen == CILEN_VOID) {
andrewbonney	0:ec559500a63f	1882	p += 2;
andrewbonney	0:ec559500a63f	1883	printer(arg, "pcomp");
andrewbonney	0:ec559500a63f	1884	}
andrewbonney	0:ec559500a63f	1885	break;
andrewbonney	0:ec559500a63f	1886	case CI_ACCOMPRESSION:
andrewbonney	0:ec559500a63f	1887	if (olen == CILEN_VOID) {
andrewbonney	0:ec559500a63f	1888	p += 2;
andrewbonney	0:ec559500a63f	1889	printer(arg, "accomp");
andrewbonney	0:ec559500a63f	1890	}
andrewbonney	0:ec559500a63f	1891	break;
andrewbonney	0:ec559500a63f	1892	}
andrewbonney	0:ec559500a63f	1893	while (p < optend) {
andrewbonney	0:ec559500a63f	1894	GETCHAR(code, p);
andrewbonney	0:ec559500a63f	1895	printer(arg, " %.2x", code);
andrewbonney	0:ec559500a63f	1896	}
andrewbonney	0:ec559500a63f	1897	printer(arg, ">");
andrewbonney	0:ec559500a63f	1898	}
andrewbonney	0:ec559500a63f	1899	break;
andrewbonney	0:ec559500a63f	1900
andrewbonney	0:ec559500a63f	1901	case TERMACK:
andrewbonney	0:ec559500a63f	1902	case TERMREQ:
andrewbonney	0:ec559500a63f	1903	if (len > 0 && p >= ' ' && p < 0x7f) {
andrewbonney	0:ec559500a63f	1904	printer(arg, " ");
andrewbonney	0:ec559500a63f	1905	print_string((char*)p, len, printer, arg);
andrewbonney	0:ec559500a63f	1906	p += len;
andrewbonney	0:ec559500a63f	1907	len = 0;
andrewbonney	0:ec559500a63f	1908	}
andrewbonney	0:ec559500a63f	1909	break;
andrewbonney	0:ec559500a63f	1910
andrewbonney	0:ec559500a63f	1911	case ECHOREQ:
andrewbonney	0:ec559500a63f	1912	case ECHOREP:
andrewbonney	0:ec559500a63f	1913	case DISCREQ:
andrewbonney	0:ec559500a63f	1914	if (len >= 4) {
andrewbonney	0:ec559500a63f	1915	GETLONG(cilong, p);
andrewbonney	0:ec559500a63f	1916	printer(arg, " magic=0x%x", cilong);
andrewbonney	0:ec559500a63f	1917	p += 4;
andrewbonney	0:ec559500a63f	1918	len -= 4;
andrewbonney	0:ec559500a63f	1919	}
andrewbonney	0:ec559500a63f	1920	break;
andrewbonney	0:ec559500a63f	1921	}
andrewbonney	0:ec559500a63f	1922
andrewbonney	0:ec559500a63f	1923	/* print the rest of the bytes in the packet */
andrewbonney	0:ec559500a63f	1924	for (; len > 0; --len) {
andrewbonney	0:ec559500a63f	1925	GETCHAR(code, p);
andrewbonney	0:ec559500a63f	1926	printer(arg, " %.2x", code);
andrewbonney	0:ec559500a63f	1927	}
andrewbonney	0:ec559500a63f	1928
andrewbonney	0:ec559500a63f	1929	return (int)(p - pstart);
andrewbonney	0:ec559500a63f	1930	}
andrewbonney	0:ec559500a63f	1931	#endif /* PPP_ADDITIONAL_CALLBACKS */
andrewbonney	0:ec559500a63f	1932
andrewbonney	0:ec559500a63f	1933	/*
andrewbonney	0:ec559500a63f	1934	* Time to shut down the link because there is nothing out there.
andrewbonney	0:ec559500a63f	1935	*/
andrewbonney	0:ec559500a63f	1936	static void
andrewbonney	0:ec559500a63f	1937	LcpLinkFailure (fsm *f)
andrewbonney	0:ec559500a63f	1938	{
andrewbonney	0:ec559500a63f	1939	if (f->state == LS_OPENED) {
andrewbonney	0:ec559500a63f	1940	LCPDEBUG(LOG_INFO, ("No response to %d echo-requests\n", lcp_echos_pending));
andrewbonney	0:ec559500a63f	1941	LCPDEBUG(LOG_NOTICE, ("Serial link appears to be disconnected.\n"));
andrewbonney	0:ec559500a63f	1942	lcp_close(f->unit, "Peer not responding");
andrewbonney	0:ec559500a63f	1943	}
andrewbonney	0:ec559500a63f	1944	}
andrewbonney	0:ec559500a63f	1945
andrewbonney	0:ec559500a63f	1946	/*
andrewbonney	0:ec559500a63f	1947	* Timer expired for the LCP echo requests from this process.
andrewbonney	0:ec559500a63f	1948	*/
andrewbonney	0:ec559500a63f	1949	static void
andrewbonney	0:ec559500a63f	1950	LcpEchoCheck (fsm *f)
andrewbonney	0:ec559500a63f	1951	{
andrewbonney	0:ec559500a63f	1952	LcpSendEchoRequest (f);
andrewbonney	0:ec559500a63f	1953
andrewbonney	0:ec559500a63f	1954	/*
andrewbonney	0:ec559500a63f	1955	* Start the timer for the next interval.
andrewbonney	0:ec559500a63f	1956	*/
andrewbonney	0:ec559500a63f	1957	LWIP_ASSERT("lcp_echo_timer_running == 0", lcp_echo_timer_running == 0);
andrewbonney	0:ec559500a63f	1958
andrewbonney	0:ec559500a63f	1959	TIMEOUT (LcpEchoTimeout, f, lcp_echo_interval);
andrewbonney	0:ec559500a63f	1960	lcp_echo_timer_running = 1;
andrewbonney	0:ec559500a63f	1961	}
andrewbonney	0:ec559500a63f	1962
andrewbonney	0:ec559500a63f	1963	/*
andrewbonney	0:ec559500a63f	1964	* LcpEchoTimeout - Timer expired on the LCP echo
andrewbonney	0:ec559500a63f	1965	*/
andrewbonney	0:ec559500a63f	1966	static void
andrewbonney	0:ec559500a63f	1967	LcpEchoTimeout (void *arg)
andrewbonney	0:ec559500a63f	1968	{
andrewbonney	0:ec559500a63f	1969	if (lcp_echo_timer_running != 0) {
andrewbonney	0:ec559500a63f	1970	lcp_echo_timer_running = 0;
andrewbonney	0:ec559500a63f	1971	LcpEchoCheck ((fsm *) arg);
andrewbonney	0:ec559500a63f	1972	}
andrewbonney	0:ec559500a63f	1973	}
andrewbonney	0:ec559500a63f	1974
andrewbonney	0:ec559500a63f	1975	/*
andrewbonney	0:ec559500a63f	1976	* LcpEchoReply - LCP has received a reply to the echo
andrewbonney	0:ec559500a63f	1977	*/
andrewbonney	0:ec559500a63f	1978	static void
andrewbonney	0:ec559500a63f	1979	lcp_received_echo_reply (fsm f, int id, u_char inp, int len)
andrewbonney	0:ec559500a63f	1980	{
andrewbonney	0:ec559500a63f	1981	u32_t magic;
andrewbonney	0:ec559500a63f	1982
andrewbonney	0:ec559500a63f	1983	LWIP_UNUSED_ARG(id);
andrewbonney	0:ec559500a63f	1984
andrewbonney	0:ec559500a63f	1985	/* Check the magic number - don't count replies from ourselves. */
andrewbonney	0:ec559500a63f	1986	if (len < 4) {
andrewbonney	0:ec559500a63f	1987	LCPDEBUG(LOG_WARNING, ("lcp: received short Echo-Reply, length %d\n", len));
andrewbonney	0:ec559500a63f	1988	return;
andrewbonney	0:ec559500a63f	1989	}
andrewbonney	0:ec559500a63f	1990	GETLONG(magic, inp);
andrewbonney	0:ec559500a63f	1991	if (lcp_gotoptions[f->unit].neg_magicnumber && magic == lcp_gotoptions[f->unit].magicnumber) {
andrewbonney	0:ec559500a63f	1992	LCPDEBUG(LOG_WARNING, ("appear to have received our own echo-reply!\n"));
andrewbonney	0:ec559500a63f	1993	return;
andrewbonney	0:ec559500a63f	1994	}
andrewbonney	0:ec559500a63f	1995
andrewbonney	0:ec559500a63f	1996	/* Reset the number of outstanding echo frames */
andrewbonney	0:ec559500a63f	1997	lcp_echos_pending = 0;
andrewbonney	0:ec559500a63f	1998	}
andrewbonney	0:ec559500a63f	1999
andrewbonney	0:ec559500a63f	2000	/*
andrewbonney	0:ec559500a63f	2001	* LcpSendEchoRequest - Send an echo request frame to the peer
andrewbonney	0:ec559500a63f	2002	*/
andrewbonney	0:ec559500a63f	2003	static void
andrewbonney	0:ec559500a63f	2004	LcpSendEchoRequest (fsm *f)
andrewbonney	0:ec559500a63f	2005	{
andrewbonney	0:ec559500a63f	2006	u32_t lcp_magic;
andrewbonney	0:ec559500a63f	2007	u_char pkt[4], *pktp;
andrewbonney	0:ec559500a63f	2008
andrewbonney	0:ec559500a63f	2009	/*
andrewbonney	0:ec559500a63f	2010	* Detect the failure of the peer at this point.
andrewbonney	0:ec559500a63f	2011	*/
andrewbonney	0:ec559500a63f	2012	if (lcp_echo_fails != 0) {
andrewbonney	0:ec559500a63f	2013	if (lcp_echos_pending >= lcp_echo_fails) {
andrewbonney	0:ec559500a63f	2014	LcpLinkFailure(f);
andrewbonney	0:ec559500a63f	2015	lcp_echos_pending = 0;
andrewbonney	0:ec559500a63f	2016	}
andrewbonney	0:ec559500a63f	2017	}
andrewbonney	0:ec559500a63f	2018
andrewbonney	0:ec559500a63f	2019	/*
andrewbonney	0:ec559500a63f	2020	* Make and send the echo request frame.
andrewbonney	0:ec559500a63f	2021	*/
andrewbonney	0:ec559500a63f	2022	if (f->state == LS_OPENED) {
andrewbonney	0:ec559500a63f	2023	lcp_magic = lcp_gotoptions[f->unit].magicnumber;
andrewbonney	0:ec559500a63f	2024	pktp = pkt;
andrewbonney	0:ec559500a63f	2025	PUTLONG(lcp_magic, pktp);
andrewbonney	0:ec559500a63f	2026	fsm_sdata(f, ECHOREQ, (u_char)(lcp_echo_number++ & 0xFF), pkt, (int)(pktp - pkt));
andrewbonney	0:ec559500a63f	2027	++lcp_echos_pending;
andrewbonney	0:ec559500a63f	2028	}
andrewbonney	0:ec559500a63f	2029	}
andrewbonney	0:ec559500a63f	2030
andrewbonney	0:ec559500a63f	2031	/*
andrewbonney	0:ec559500a63f	2032	* lcp_echo_lowerup - Start the timer for the LCP frame
andrewbonney	0:ec559500a63f	2033	*/
andrewbonney	0:ec559500a63f	2034
andrewbonney	0:ec559500a63f	2035	static void
andrewbonney	0:ec559500a63f	2036	lcp_echo_lowerup (int unit)
andrewbonney	0:ec559500a63f	2037	{
andrewbonney	0:ec559500a63f	2038	fsm *f = &lcp_fsm[unit];
andrewbonney	0:ec559500a63f	2039
andrewbonney	0:ec559500a63f	2040	/* Clear the parameters for generating echo frames */
andrewbonney	0:ec559500a63f	2041	lcp_echos_pending = 0;
andrewbonney	0:ec559500a63f	2042	lcp_echo_number = 0;
andrewbonney	0:ec559500a63f	2043	lcp_echo_timer_running = 0;
andrewbonney	0:ec559500a63f	2044
andrewbonney	0:ec559500a63f	2045	/* If a timeout interval is specified then start the timer */
andrewbonney	0:ec559500a63f	2046	if (lcp_echo_interval != 0) {
andrewbonney	0:ec559500a63f	2047	LcpEchoCheck (f);
andrewbonney	0:ec559500a63f	2048	}
andrewbonney	0:ec559500a63f	2049	}
andrewbonney	0:ec559500a63f	2050
andrewbonney	0:ec559500a63f	2051	/*
andrewbonney	0:ec559500a63f	2052	* lcp_echo_lowerdown - Stop the timer for the LCP frame
andrewbonney	0:ec559500a63f	2053	*/
andrewbonney	0:ec559500a63f	2054
andrewbonney	0:ec559500a63f	2055	static void
andrewbonney	0:ec559500a63f	2056	lcp_echo_lowerdown (int unit)
andrewbonney	0:ec559500a63f	2057	{
andrewbonney	0:ec559500a63f	2058	fsm *f = &lcp_fsm[unit];
andrewbonney	0:ec559500a63f	2059
andrewbonney	0:ec559500a63f	2060	if (lcp_echo_timer_running != 0) {
andrewbonney	0:ec559500a63f	2061	UNTIMEOUT (LcpEchoTimeout, f);
andrewbonney	0:ec559500a63f	2062	lcp_echo_timer_running = 0;
andrewbonney	0:ec559500a63f	2063	}
andrewbonney	0:ec559500a63f	2064	}
andrewbonney	0:ec559500a63f	2065
andrewbonney	0:ec559500a63f	2066	#endif /* PPP_SUPPORT */

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Type:	Library
Created:	08 Apr 2011
Imports:	86
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	3

lwip/netif/ppp/lcp.c@0:ec559500a63f, 2011-04-08 (annotated)

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