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netif/ppp/lcp.c@0:51ac1d130fd4, 2012-06-22 (annotated)

Committer:: mbed_official
Date:: Fri Jun 22 09:25:39 2012 +0000
Revision:: 0:51ac1d130fd4
Child:: 4:f71f5d9d5846

Initial import from lwip-1.4.0: http://download.savannah.gnu.org/releases/lwip/lwip-1.4.0.zip

Who changed what in which revision?

User	Revision	Line number	New contents of line
mbed_official	0:51ac1d130fd4	1	/*****************************************************************************
mbed_official	0:51ac1d130fd4	2	* lcp.c - Network Link Control Protocol program file.
mbed_official	0:51ac1d130fd4	3	*
mbed_official	0:51ac1d130fd4	4	* Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
mbed_official	0:51ac1d130fd4	5	* portions Copyright (c) 1997 by Global Election Systems Inc.
mbed_official	0:51ac1d130fd4	6	*
mbed_official	0:51ac1d130fd4	7	* The authors hereby grant permission to use, copy, modify, distribute,
mbed_official	0:51ac1d130fd4	8	* and license this software and its documentation for any purpose, provided
mbed_official	0:51ac1d130fd4	9	* that existing copyright notices are retained in all copies and that this
mbed_official	0:51ac1d130fd4	10	* notice and the following disclaimer are included verbatim in any
mbed_official	0:51ac1d130fd4	11	* distributions. No written agreement, license, or royalty fee is required
mbed_official	0:51ac1d130fd4	12	* for any of the authorized uses.
mbed_official	0:51ac1d130fd4	13	*
mbed_official	0:51ac1d130fd4	14	* THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS AS IS AND ANY EXPRESS OR
mbed_official	0:51ac1d130fd4	15	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
mbed_official	0:51ac1d130fd4	16	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
mbed_official	0:51ac1d130fd4	17	* IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
mbed_official	0:51ac1d130fd4	18	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
mbed_official	0:51ac1d130fd4	19	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
mbed_official	0:51ac1d130fd4	20	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
mbed_official	0:51ac1d130fd4	21	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
mbed_official	0:51ac1d130fd4	22	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
mbed_official	0:51ac1d130fd4	23	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official	0:51ac1d130fd4	24	*
mbed_official	0:51ac1d130fd4	25	******************************************************************************
mbed_official	0:51ac1d130fd4	26	* REVISION HISTORY
mbed_official	0:51ac1d130fd4	27	*
mbed_official	0:51ac1d130fd4	28	* 03-01-01 Marc Boucher <marc@mbsi.ca>
mbed_official	0:51ac1d130fd4	29	* Ported to lwIP.
mbed_official	0:51ac1d130fd4	30	* 97-12-01 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
mbed_official	0:51ac1d130fd4	31	* Original.
mbed_official	0:51ac1d130fd4	32	*****************************************************************************/
mbed_official	0:51ac1d130fd4	33
mbed_official	0:51ac1d130fd4	34	/*
mbed_official	0:51ac1d130fd4	35	* lcp.c - PPP Link Control Protocol.
mbed_official	0:51ac1d130fd4	36	*
mbed_official	0:51ac1d130fd4	37	* Copyright (c) 1989 Carnegie Mellon University.
mbed_official	0:51ac1d130fd4	38	* All rights reserved.
mbed_official	0:51ac1d130fd4	39	*
mbed_official	0:51ac1d130fd4	40	* Redistribution and use in source and binary forms are permitted
mbed_official	0:51ac1d130fd4	41	* provided that the above copyright notice and this paragraph are
mbed_official	0:51ac1d130fd4	42	* duplicated in all such forms and that any documentation,
mbed_official	0:51ac1d130fd4	43	* advertising materials, and other materials related to such
mbed_official	0:51ac1d130fd4	44	* distribution and use acknowledge that the software was developed
mbed_official	0:51ac1d130fd4	45	* by Carnegie Mellon University. The name of the
mbed_official	0:51ac1d130fd4	46	* University may not be used to endorse or promote products derived
mbed_official	0:51ac1d130fd4	47	* from this software without specific prior written permission.
mbed_official	0:51ac1d130fd4	48	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
mbed_official	0:51ac1d130fd4	49	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
mbed_official	0:51ac1d130fd4	50	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
mbed_official	0:51ac1d130fd4	51	*/
mbed_official	0:51ac1d130fd4	52
mbed_official	0:51ac1d130fd4	53
mbed_official	0:51ac1d130fd4	54	#include "lwip/opt.h"
mbed_official	0:51ac1d130fd4	55
mbed_official	0:51ac1d130fd4	56	#if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
mbed_official	0:51ac1d130fd4	57
mbed_official	0:51ac1d130fd4	58	#include "ppp.h"
mbed_official	0:51ac1d130fd4	59	#include "pppdebug.h"
mbed_official	0:51ac1d130fd4	60
mbed_official	0:51ac1d130fd4	61	#include "fsm.h"
mbed_official	0:51ac1d130fd4	62	#include "chap.h"
mbed_official	0:51ac1d130fd4	63	#include "magic.h"
mbed_official	0:51ac1d130fd4	64	#include "auth.h"
mbed_official	0:51ac1d130fd4	65	#include "lcp.h"
mbed_official	0:51ac1d130fd4	66
mbed_official	0:51ac1d130fd4	67	#include <string.h>
mbed_official	0:51ac1d130fd4	68
mbed_official	0:51ac1d130fd4	69	#if PPPOE_SUPPORT
mbed_official	0:51ac1d130fd4	70	#include "netif/ppp_oe.h"
mbed_official	0:51ac1d130fd4	71	#else
mbed_official	0:51ac1d130fd4	72	#define PPPOE_MAXMTU PPP_MAXMRU
mbed_official	0:51ac1d130fd4	73	#endif
mbed_official	0:51ac1d130fd4	74
mbed_official	0:51ac1d130fd4	75	#if 0 /* UNUSED */
mbed_official	0:51ac1d130fd4	76	/*
mbed_official	0:51ac1d130fd4	77	* LCP-related command-line options.
mbed_official	0:51ac1d130fd4	78	*/
mbed_official	0:51ac1d130fd4	79	int lcp_echo_interval = 0; /* Interval between LCP echo-requests */
mbed_official	0:51ac1d130fd4	80	int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */
mbed_official	0:51ac1d130fd4	81	bool lax_recv = 0; /* accept control chars in asyncmap */
mbed_official	0:51ac1d130fd4	82
mbed_official	0:51ac1d130fd4	83	static int setescape (char **);
mbed_official	0:51ac1d130fd4	84
mbed_official	0:51ac1d130fd4	85	static option_t lcp_option_list[] = {
mbed_official	0:51ac1d130fd4	86	/* LCP options */
mbed_official	0:51ac1d130fd4	87	/* list stripped for simplicity */
mbed_official	0:51ac1d130fd4	88	{NULL}
mbed_official	0:51ac1d130fd4	89	};
mbed_official	0:51ac1d130fd4	90	#endif /* UNUSED */
mbed_official	0:51ac1d130fd4	91
mbed_official	0:51ac1d130fd4	92	/* options */
mbed_official	0:51ac1d130fd4	93	LinkPhase lcp_phase[NUM_PPP]; /* Phase of link session (RFC 1661) */
mbed_official	0:51ac1d130fd4	94	static u_int lcp_echo_interval = LCP_ECHOINTERVAL; /* Interval between LCP echo-requests */
mbed_official	0:51ac1d130fd4	95	static u_int lcp_echo_fails = LCP_MAXECHOFAILS; /* Tolerance to unanswered echo-requests */
mbed_official	0:51ac1d130fd4	96
mbed_official	0:51ac1d130fd4	97	/* global vars */
mbed_official	0:51ac1d130fd4	98	static fsm lcp_fsm[NUM_PPP]; /* LCP fsm structure (global)*/
mbed_official	0:51ac1d130fd4	99	lcp_options lcp_wantoptions[NUM_PPP]; /* Options that we want to request */
mbed_official	0:51ac1d130fd4	100	lcp_options lcp_gotoptions[NUM_PPP]; /* Options that peer ack'd */
mbed_official	0:51ac1d130fd4	101	lcp_options lcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */
mbed_official	0:51ac1d130fd4	102	lcp_options lcp_hisoptions[NUM_PPP]; /* Options that we ack'd */
mbed_official	0:51ac1d130fd4	103	ext_accm xmit_accm[NUM_PPP]; /* extended transmit ACCM */
mbed_official	0:51ac1d130fd4	104
mbed_official	0:51ac1d130fd4	105	static u32_t lcp_echos_pending = 0; /* Number of outstanding echo msgs */
mbed_official	0:51ac1d130fd4	106	static u32_t lcp_echo_number = 0; /* ID number of next echo frame */
mbed_official	0:51ac1d130fd4	107	static u32_t lcp_echo_timer_running = 0; /* TRUE if a timer is running */
mbed_official	0:51ac1d130fd4	108
mbed_official	0:51ac1d130fd4	109	/* @todo: do we really need such a large buffer? The typical 1500 bytes seem too much. */
mbed_official	0:51ac1d130fd4	110	static u_char nak_buffer[PPP_MRU]; /* where we construct a nak packet */
mbed_official	0:51ac1d130fd4	111
mbed_official	0:51ac1d130fd4	112	/*
mbed_official	0:51ac1d130fd4	113	* Callbacks for fsm code. (CI = Configuration Information)
mbed_official	0:51ac1d130fd4	114	*/
mbed_official	0:51ac1d130fd4	115	static void lcp_resetci (fsm); / Reset our CI */
mbed_official	0:51ac1d130fd4	116	static int lcp_cilen (fsm); / Return length of our CI */
mbed_official	0:51ac1d130fd4	117	static void lcp_addci (fsm, u_char, int); / Add our CI to pkt */
mbed_official	0:51ac1d130fd4	118	static int lcp_ackci (fsm, u_char, int); /* Peer ack'd our CI */
mbed_official	0:51ac1d130fd4	119	static int lcp_nakci (fsm, u_char, int); /* Peer nak'd our CI */
mbed_official	0:51ac1d130fd4	120	static int lcp_rejci (fsm, u_char, int); /* Peer rej'd our CI */
mbed_official	0:51ac1d130fd4	121	static int lcp_reqci (fsm, u_char, int, int); / Rcv peer CI */
mbed_official	0:51ac1d130fd4	122	static void lcp_up (fsm); / We're UP */
mbed_official	0:51ac1d130fd4	123	static void lcp_down (fsm); / We're DOWN */
mbed_official	0:51ac1d130fd4	124	static void lcp_starting (fsm); / We need lower layer up */
mbed_official	0:51ac1d130fd4	125	static void lcp_finished (fsm); / We need lower layer down */
mbed_official	0:51ac1d130fd4	126	static int lcp_extcode (fsm, int, u_char, u_char, int);
mbed_official	0:51ac1d130fd4	127	static void lcp_rprotrej (fsm, u_char, int);
mbed_official	0:51ac1d130fd4	128
mbed_official	0:51ac1d130fd4	129	/*
mbed_official	0:51ac1d130fd4	130	* routines to send LCP echos to peer
mbed_official	0:51ac1d130fd4	131	*/
mbed_official	0:51ac1d130fd4	132
mbed_official	0:51ac1d130fd4	133	static void lcp_echo_lowerup (int);
mbed_official	0:51ac1d130fd4	134	static void lcp_echo_lowerdown (int);
mbed_official	0:51ac1d130fd4	135	static void LcpEchoTimeout (void*);
mbed_official	0:51ac1d130fd4	136	static void lcp_received_echo_reply (fsm, int, u_char, int);
mbed_official	0:51ac1d130fd4	137	static void LcpSendEchoRequest (fsm*);
mbed_official	0:51ac1d130fd4	138	static void LcpLinkFailure (fsm*);
mbed_official	0:51ac1d130fd4	139	static void LcpEchoCheck (fsm*);
mbed_official	0:51ac1d130fd4	140
mbed_official	0:51ac1d130fd4	141	static fsm_callbacks lcp_callbacks = { /* LCP callback routines */
mbed_official	0:51ac1d130fd4	142	lcp_resetci, /* Reset our Configuration Information */
mbed_official	0:51ac1d130fd4	143	lcp_cilen, /* Length of our Configuration Information */
mbed_official	0:51ac1d130fd4	144	lcp_addci, /* Add our Configuration Information */
mbed_official	0:51ac1d130fd4	145	lcp_ackci, /* ACK our Configuration Information */
mbed_official	0:51ac1d130fd4	146	lcp_nakci, /* NAK our Configuration Information */
mbed_official	0:51ac1d130fd4	147	lcp_rejci, /* Reject our Configuration Information */
mbed_official	0:51ac1d130fd4	148	lcp_reqci, /* Request peer's Configuration Information */
mbed_official	0:51ac1d130fd4	149	lcp_up, /* Called when fsm reaches LS_OPENED state */
mbed_official	0:51ac1d130fd4	150	lcp_down, /* Called when fsm leaves LS_OPENED state */
mbed_official	0:51ac1d130fd4	151	lcp_starting, /* Called when we want the lower layer up */
mbed_official	0:51ac1d130fd4	152	lcp_finished, /* Called when we want the lower layer down */
mbed_official	0:51ac1d130fd4	153	NULL, /* Called when Protocol-Reject received */
mbed_official	0:51ac1d130fd4	154	NULL, /* Retransmission is necessary */
mbed_official	0:51ac1d130fd4	155	lcp_extcode, /* Called to handle LCP-specific codes */
mbed_official	0:51ac1d130fd4	156	"LCP" /* String name of protocol */
mbed_official	0:51ac1d130fd4	157	};
mbed_official	0:51ac1d130fd4	158
mbed_official	0:51ac1d130fd4	159	/*
mbed_official	0:51ac1d130fd4	160	* Protocol entry points.
mbed_official	0:51ac1d130fd4	161	* Some of these are called directly.
mbed_official	0:51ac1d130fd4	162	*/
mbed_official	0:51ac1d130fd4	163
mbed_official	0:51ac1d130fd4	164	static void lcp_input (int, u_char *, int);
mbed_official	0:51ac1d130fd4	165	static void lcp_protrej (int);
mbed_official	0:51ac1d130fd4	166
mbed_official	0:51ac1d130fd4	167	struct protent lcp_protent = {
mbed_official	0:51ac1d130fd4	168	PPP_LCP,
mbed_official	0:51ac1d130fd4	169	lcp_init,
mbed_official	0:51ac1d130fd4	170	lcp_input,
mbed_official	0:51ac1d130fd4	171	lcp_protrej,
mbed_official	0:51ac1d130fd4	172	lcp_lowerup,
mbed_official	0:51ac1d130fd4	173	lcp_lowerdown,
mbed_official	0:51ac1d130fd4	174	lcp_open,
mbed_official	0:51ac1d130fd4	175	lcp_close,
mbed_official	0:51ac1d130fd4	176	#if PPP_ADDITIONAL_CALLBACKS
mbed_official	0:51ac1d130fd4	177	lcp_printpkt,
mbed_official	0:51ac1d130fd4	178	NULL,
mbed_official	0:51ac1d130fd4	179	#endif /* PPP_ADDITIONAL_CALLBACKS */
mbed_official	0:51ac1d130fd4	180	1,
mbed_official	0:51ac1d130fd4	181	"LCP",
mbed_official	0:51ac1d130fd4	182	#if PPP_ADDITIONAL_CALLBACKS
mbed_official	0:51ac1d130fd4	183	NULL,
mbed_official	0:51ac1d130fd4	184	NULL,
mbed_official	0:51ac1d130fd4	185	NULL
mbed_official	0:51ac1d130fd4	186	#endif /* PPP_ADDITIONAL_CALLBACKS */
mbed_official	0:51ac1d130fd4	187	};
mbed_official	0:51ac1d130fd4	188
mbed_official	0:51ac1d130fd4	189	int lcp_loopbackfail = DEFLOOPBACKFAIL;
mbed_official	0:51ac1d130fd4	190
mbed_official	0:51ac1d130fd4	191	/*
mbed_official	0:51ac1d130fd4	192	* Length of each type of configuration option (in octets)
mbed_official	0:51ac1d130fd4	193	*/
mbed_official	0:51ac1d130fd4	194	#define CILEN_VOID 2
mbed_official	0:51ac1d130fd4	195	#define CILEN_CHAR 3
mbed_official	0:51ac1d130fd4	196	#define CILEN_SHORT 4 /* CILEN_VOID + sizeof(short) */
mbed_official	0:51ac1d130fd4	197	#define CILEN_CHAP 5 /* CILEN_VOID + sizeof(short) + 1 */
mbed_official	0:51ac1d130fd4	198	#define CILEN_LONG 6 /* CILEN_VOID + sizeof(long) */
mbed_official	0:51ac1d130fd4	199	#define CILEN_LQR 8 /* CILEN_VOID + sizeof(short) + sizeof(long) */
mbed_official	0:51ac1d130fd4	200	#define CILEN_CBCP 3
mbed_official	0:51ac1d130fd4	201
mbed_official	0:51ac1d130fd4	202	#define CODENAME(x) ((x) == CONFACK ? "ACK" : (x) == CONFNAK ? "NAK" : "REJ")
mbed_official	0:51ac1d130fd4	203
mbed_official	0:51ac1d130fd4	204	#if 0 /* UNUSED */
mbed_official	0:51ac1d130fd4	205	/*
mbed_official	0:51ac1d130fd4	206	* setescape - add chars to the set we escape on transmission.
mbed_official	0:51ac1d130fd4	207	*/
mbed_official	0:51ac1d130fd4	208	static int
mbed_official	0:51ac1d130fd4	209	setescape(argv)
mbed_official	0:51ac1d130fd4	210	char **argv;
mbed_official	0:51ac1d130fd4	211	{
mbed_official	0:51ac1d130fd4	212	int n, ret;
mbed_official	0:51ac1d130fd4	213	char p, endp;
mbed_official	0:51ac1d130fd4	214
mbed_official	0:51ac1d130fd4	215	p = *argv;
mbed_official	0:51ac1d130fd4	216	ret = 1;
mbed_official	0:51ac1d130fd4	217	while (*p) {
mbed_official	0:51ac1d130fd4	218	n = strtol(p, &endp, 16);
mbed_official	0:51ac1d130fd4	219	if (p == endp) {
mbed_official	0:51ac1d130fd4	220	option_error("escape parameter contains invalid hex number '%s'", p);
mbed_official	0:51ac1d130fd4	221	return 0;
mbed_official	0:51ac1d130fd4	222	}
mbed_official	0:51ac1d130fd4	223	p = endp;
mbed_official	0:51ac1d130fd4	224	if (n < 0 \|\| n == 0x5E \|\| n > 0xFF) {
mbed_official	0:51ac1d130fd4	225	option_error("can't escape character 0x%x", n);
mbed_official	0:51ac1d130fd4	226	ret = 0;
mbed_official	0:51ac1d130fd4	227	} else
mbed_official	0:51ac1d130fd4	228	xmit_accm[0][n >> 5] \|= 1 << (n & 0x1F);
mbed_official	0:51ac1d130fd4	229	while (p == ',' \|\| p == ' ')
mbed_official	0:51ac1d130fd4	230	++p;
mbed_official	0:51ac1d130fd4	231	}
mbed_official	0:51ac1d130fd4	232	return ret;
mbed_official	0:51ac1d130fd4	233	}
mbed_official	0:51ac1d130fd4	234	#endif /* UNUSED */
mbed_official	0:51ac1d130fd4	235
mbed_official	0:51ac1d130fd4	236	/*
mbed_official	0:51ac1d130fd4	237	* lcp_init - Initialize LCP.
mbed_official	0:51ac1d130fd4	238	*/
mbed_official	0:51ac1d130fd4	239	void
mbed_official	0:51ac1d130fd4	240	lcp_init(int unit)
mbed_official	0:51ac1d130fd4	241	{
mbed_official	0:51ac1d130fd4	242	fsm *f = &lcp_fsm[unit];
mbed_official	0:51ac1d130fd4	243	lcp_options *wo = &lcp_wantoptions[unit];
mbed_official	0:51ac1d130fd4	244	lcp_options *ao = &lcp_allowoptions[unit];
mbed_official	0:51ac1d130fd4	245
mbed_official	0:51ac1d130fd4	246	f->unit = unit;
mbed_official	0:51ac1d130fd4	247	f->protocol = PPP_LCP;
mbed_official	0:51ac1d130fd4	248	f->callbacks = &lcp_callbacks;
mbed_official	0:51ac1d130fd4	249
mbed_official	0:51ac1d130fd4	250	fsm_init(f);
mbed_official	0:51ac1d130fd4	251
mbed_official	0:51ac1d130fd4	252	wo->passive = 0;
mbed_official	0:51ac1d130fd4	253	wo->silent = 0;
mbed_official	0:51ac1d130fd4	254	wo->restart = 0; /* Set to 1 in kernels or multi-line implementations */
mbed_official	0:51ac1d130fd4	255	wo->neg_mru = 1;
mbed_official	0:51ac1d130fd4	256	wo->mru = PPP_DEFMRU;
mbed_official	0:51ac1d130fd4	257	wo->neg_asyncmap = 1;
mbed_official	0:51ac1d130fd4	258	wo->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */
mbed_official	0:51ac1d130fd4	259	wo->neg_chap = 0; /* Set to 1 on server */
mbed_official	0:51ac1d130fd4	260	wo->neg_upap = 0; /* Set to 1 on server */
mbed_official	0:51ac1d130fd4	261	wo->chap_mdtype = CHAP_DIGEST_MD5;
mbed_official	0:51ac1d130fd4	262	wo->neg_magicnumber = 1;
mbed_official	0:51ac1d130fd4	263	wo->neg_pcompression = 1;
mbed_official	0:51ac1d130fd4	264	wo->neg_accompression = 1;
mbed_official	0:51ac1d130fd4	265	wo->neg_lqr = 0; /* no LQR implementation yet */
mbed_official	0:51ac1d130fd4	266	wo->neg_cbcp = 0;
mbed_official	0:51ac1d130fd4	267
mbed_official	0:51ac1d130fd4	268	ao->neg_mru = 1;
mbed_official	0:51ac1d130fd4	269	ao->mru = PPP_MAXMRU;
mbed_official	0:51ac1d130fd4	270	ao->neg_asyncmap = 1;
mbed_official	0:51ac1d130fd4	271	ao->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */
mbed_official	0:51ac1d130fd4	272	ao->neg_chap = (CHAP_SUPPORT != 0);
mbed_official	0:51ac1d130fd4	273	ao->chap_mdtype = CHAP_DIGEST_MD5;
mbed_official	0:51ac1d130fd4	274	ao->neg_upap = (PAP_SUPPORT != 0);
mbed_official	0:51ac1d130fd4	275	ao->neg_magicnumber = 1;
mbed_official	0:51ac1d130fd4	276	ao->neg_pcompression = 1;
mbed_official	0:51ac1d130fd4	277	ao->neg_accompression = 1;
mbed_official	0:51ac1d130fd4	278	ao->neg_lqr = 0; /* no LQR implementation yet */
mbed_official	0:51ac1d130fd4	279	ao->neg_cbcp = (CBCP_SUPPORT != 0);
mbed_official	0:51ac1d130fd4	280
mbed_official	0:51ac1d130fd4	281	/*
mbed_official	0:51ac1d130fd4	282	* Set transmit escape for the flag and escape characters plus anything
mbed_official	0:51ac1d130fd4	283	* set for the allowable options.
mbed_official	0:51ac1d130fd4	284	*/
mbed_official	0:51ac1d130fd4	285	memset(xmit_accm[unit], 0, sizeof(xmit_accm[0]));
mbed_official	0:51ac1d130fd4	286	xmit_accm[unit][15] = 0x60;
mbed_official	0:51ac1d130fd4	287	xmit_accm[unit][0] = (u_char)((ao->asyncmap & 0xFF));
mbed_official	0:51ac1d130fd4	288	xmit_accm[unit][1] = (u_char)((ao->asyncmap >> 8) & 0xFF);
mbed_official	0:51ac1d130fd4	289	xmit_accm[unit][2] = (u_char)((ao->asyncmap >> 16) & 0xFF);
mbed_official	0:51ac1d130fd4	290	xmit_accm[unit][3] = (u_char)((ao->asyncmap >> 24) & 0xFF);
mbed_official	0:51ac1d130fd4	291	LCPDEBUG(LOG_INFO, ("lcp_init: xmit_accm=%X %X %X %X\n",
mbed_official	0:51ac1d130fd4	292	xmit_accm[unit][0],
mbed_official	0:51ac1d130fd4	293	xmit_accm[unit][1],
mbed_official	0:51ac1d130fd4	294	xmit_accm[unit][2],
mbed_official	0:51ac1d130fd4	295	xmit_accm[unit][3]));
mbed_official	0:51ac1d130fd4	296
mbed_official	0:51ac1d130fd4	297	lcp_phase[unit] = PHASE_INITIALIZE;
mbed_official	0:51ac1d130fd4	298	}
mbed_official	0:51ac1d130fd4	299
mbed_official	0:51ac1d130fd4	300
mbed_official	0:51ac1d130fd4	301	/*
mbed_official	0:51ac1d130fd4	302	* lcp_open - LCP is allowed to come up.
mbed_official	0:51ac1d130fd4	303	*/
mbed_official	0:51ac1d130fd4	304	void
mbed_official	0:51ac1d130fd4	305	lcp_open(int unit)
mbed_official	0:51ac1d130fd4	306	{
mbed_official	0:51ac1d130fd4	307	fsm *f = &lcp_fsm[unit];
mbed_official	0:51ac1d130fd4	308	lcp_options *wo = &lcp_wantoptions[unit];
mbed_official	0:51ac1d130fd4	309
mbed_official	0:51ac1d130fd4	310	f->flags = 0;
mbed_official	0:51ac1d130fd4	311	if (wo->passive) {
mbed_official	0:51ac1d130fd4	312	f->flags \|= OPT_PASSIVE;
mbed_official	0:51ac1d130fd4	313	}
mbed_official	0:51ac1d130fd4	314	if (wo->silent) {
mbed_official	0:51ac1d130fd4	315	f->flags \|= OPT_SILENT;
mbed_official	0:51ac1d130fd4	316	}
mbed_official	0:51ac1d130fd4	317	fsm_open(f);
mbed_official	0:51ac1d130fd4	318
mbed_official	0:51ac1d130fd4	319	lcp_phase[unit] = PHASE_ESTABLISH;
mbed_official	0:51ac1d130fd4	320	}
mbed_official	0:51ac1d130fd4	321
mbed_official	0:51ac1d130fd4	322
mbed_official	0:51ac1d130fd4	323	/*
mbed_official	0:51ac1d130fd4	324	* lcp_close - Take LCP down.
mbed_official	0:51ac1d130fd4	325	*/
mbed_official	0:51ac1d130fd4	326	void
mbed_official	0:51ac1d130fd4	327	lcp_close(int unit, char *reason)
mbed_official	0:51ac1d130fd4	328	{
mbed_official	0:51ac1d130fd4	329	fsm *f = &lcp_fsm[unit];
mbed_official	0:51ac1d130fd4	330
mbed_official	0:51ac1d130fd4	331	if (lcp_phase[unit] != PHASE_DEAD) {
mbed_official	0:51ac1d130fd4	332	lcp_phase[unit] = PHASE_TERMINATE;
mbed_official	0:51ac1d130fd4	333	}
mbed_official	0:51ac1d130fd4	334	if (f->state == LS_STOPPED && f->flags & (OPT_PASSIVE\|OPT_SILENT)) {
mbed_official	0:51ac1d130fd4	335	/*
mbed_official	0:51ac1d130fd4	336	* This action is not strictly according to the FSM in RFC1548,
mbed_official	0:51ac1d130fd4	337	* but it does mean that the program terminates if you do an
mbed_official	0:51ac1d130fd4	338	* lcp_close() in passive/silent mode when a connection hasn't
mbed_official	0:51ac1d130fd4	339	* been established.
mbed_official	0:51ac1d130fd4	340	*/
mbed_official	0:51ac1d130fd4	341	f->state = LS_CLOSED;
mbed_official	0:51ac1d130fd4	342	lcp_finished(f);
mbed_official	0:51ac1d130fd4	343	} else {
mbed_official	0:51ac1d130fd4	344	fsm_close(f, reason);
mbed_official	0:51ac1d130fd4	345	}
mbed_official	0:51ac1d130fd4	346	}
mbed_official	0:51ac1d130fd4	347
mbed_official	0:51ac1d130fd4	348
mbed_official	0:51ac1d130fd4	349	/*
mbed_official	0:51ac1d130fd4	350	* lcp_lowerup - The lower layer is up.
mbed_official	0:51ac1d130fd4	351	*/
mbed_official	0:51ac1d130fd4	352	void
mbed_official	0:51ac1d130fd4	353	lcp_lowerup(int unit)
mbed_official	0:51ac1d130fd4	354	{
mbed_official	0:51ac1d130fd4	355	lcp_options *wo = &lcp_wantoptions[unit];
mbed_official	0:51ac1d130fd4	356
mbed_official	0:51ac1d130fd4	357	/*
mbed_official	0:51ac1d130fd4	358	* Don't use A/C or protocol compression on transmission,
mbed_official	0:51ac1d130fd4	359	* but accept A/C and protocol compressed packets
mbed_official	0:51ac1d130fd4	360	* if we are going to ask for A/C and protocol compression.
mbed_official	0:51ac1d130fd4	361	*/
mbed_official	0:51ac1d130fd4	362	ppp_set_xaccm(unit, &xmit_accm[unit]);
mbed_official	0:51ac1d130fd4	363	ppp_send_config(unit, PPP_MRU, 0xffffffffl, 0, 0);
mbed_official	0:51ac1d130fd4	364	ppp_recv_config(unit, PPP_MRU, 0x00000000l,
mbed_official	0:51ac1d130fd4	365	wo->neg_pcompression, wo->neg_accompression);
mbed_official	0:51ac1d130fd4	366	peer_mru[unit] = PPP_MRU;
mbed_official	0:51ac1d130fd4	367	lcp_allowoptions[unit].asyncmap = (u_long)xmit_accm[unit][0]
mbed_official	0:51ac1d130fd4	368	\| ((u_long)xmit_accm[unit][1] << 8)
mbed_official	0:51ac1d130fd4	369	\| ((u_long)xmit_accm[unit][2] << 16)
mbed_official	0:51ac1d130fd4	370	\| ((u_long)xmit_accm[unit][3] << 24);
mbed_official	0:51ac1d130fd4	371	LCPDEBUG(LOG_INFO, ("lcp_lowerup: asyncmap=%X %X %X %X\n",
mbed_official	0:51ac1d130fd4	372	xmit_accm[unit][3],
mbed_official	0:51ac1d130fd4	373	xmit_accm[unit][2],
mbed_official	0:51ac1d130fd4	374	xmit_accm[unit][1],
mbed_official	0:51ac1d130fd4	375	xmit_accm[unit][0]));
mbed_official	0:51ac1d130fd4	376
mbed_official	0:51ac1d130fd4	377	fsm_lowerup(&lcp_fsm[unit]);
mbed_official	0:51ac1d130fd4	378	}
mbed_official	0:51ac1d130fd4	379
mbed_official	0:51ac1d130fd4	380
mbed_official	0:51ac1d130fd4	381	/*
mbed_official	0:51ac1d130fd4	382	* lcp_lowerdown - The lower layer is down.
mbed_official	0:51ac1d130fd4	383	*/
mbed_official	0:51ac1d130fd4	384	void
mbed_official	0:51ac1d130fd4	385	lcp_lowerdown(int unit)
mbed_official	0:51ac1d130fd4	386	{
mbed_official	0:51ac1d130fd4	387	fsm_lowerdown(&lcp_fsm[unit]);
mbed_official	0:51ac1d130fd4	388	}
mbed_official	0:51ac1d130fd4	389
mbed_official	0:51ac1d130fd4	390
mbed_official	0:51ac1d130fd4	391	/*
mbed_official	0:51ac1d130fd4	392	* lcp_input - Input LCP packet.
mbed_official	0:51ac1d130fd4	393	*/
mbed_official	0:51ac1d130fd4	394	static void
mbed_official	0:51ac1d130fd4	395	lcp_input(int unit, u_char *p, int len)
mbed_official	0:51ac1d130fd4	396	{
mbed_official	0:51ac1d130fd4	397	fsm *f = &lcp_fsm[unit];
mbed_official	0:51ac1d130fd4	398
mbed_official	0:51ac1d130fd4	399	fsm_input(f, p, len);
mbed_official	0:51ac1d130fd4	400	}
mbed_official	0:51ac1d130fd4	401
mbed_official	0:51ac1d130fd4	402
mbed_official	0:51ac1d130fd4	403	/*
mbed_official	0:51ac1d130fd4	404	* lcp_extcode - Handle a LCP-specific code.
mbed_official	0:51ac1d130fd4	405	*/
mbed_official	0:51ac1d130fd4	406	static int
mbed_official	0:51ac1d130fd4	407	lcp_extcode(fsm f, int code, u_char id, u_char inp, int len)
mbed_official	0:51ac1d130fd4	408	{
mbed_official	0:51ac1d130fd4	409	u_char *magp;
mbed_official	0:51ac1d130fd4	410
mbed_official	0:51ac1d130fd4	411	switch( code ){
mbed_official	0:51ac1d130fd4	412	case PROTREJ:
mbed_official	0:51ac1d130fd4	413	lcp_rprotrej(f, inp, len);
mbed_official	0:51ac1d130fd4	414	break;
mbed_official	0:51ac1d130fd4	415
mbed_official	0:51ac1d130fd4	416	case ECHOREQ:
mbed_official	0:51ac1d130fd4	417	if (f->state != LS_OPENED) {
mbed_official	0:51ac1d130fd4	418	break;
mbed_official	0:51ac1d130fd4	419	}
mbed_official	0:51ac1d130fd4	420	LCPDEBUG(LOG_INFO, ("lcp: Echo-Request, Rcvd id %d\n", id));
mbed_official	0:51ac1d130fd4	421	magp = inp;
mbed_official	0:51ac1d130fd4	422	PUTLONG(lcp_gotoptions[f->unit].magicnumber, magp);
mbed_official	0:51ac1d130fd4	423	fsm_sdata(f, ECHOREP, id, inp, len);
mbed_official	0:51ac1d130fd4	424	break;
mbed_official	0:51ac1d130fd4	425
mbed_official	0:51ac1d130fd4	426	case ECHOREP:
mbed_official	0:51ac1d130fd4	427	lcp_received_echo_reply(f, id, inp, len);
mbed_official	0:51ac1d130fd4	428	break;
mbed_official	0:51ac1d130fd4	429
mbed_official	0:51ac1d130fd4	430	case DISCREQ:
mbed_official	0:51ac1d130fd4	431	break;
mbed_official	0:51ac1d130fd4	432
mbed_official	0:51ac1d130fd4	433	default:
mbed_official	0:51ac1d130fd4	434	return 0;
mbed_official	0:51ac1d130fd4	435	}
mbed_official	0:51ac1d130fd4	436	return 1;
mbed_official	0:51ac1d130fd4	437	}
mbed_official	0:51ac1d130fd4	438
mbed_official	0:51ac1d130fd4	439
mbed_official	0:51ac1d130fd4	440	/*
mbed_official	0:51ac1d130fd4	441	* lcp_rprotrej - Receive an Protocol-Reject.
mbed_official	0:51ac1d130fd4	442	*
mbed_official	0:51ac1d130fd4	443	* Figure out which protocol is rejected and inform it.
mbed_official	0:51ac1d130fd4	444	*/
mbed_official	0:51ac1d130fd4	445	static void
mbed_official	0:51ac1d130fd4	446	lcp_rprotrej(fsm f, u_char inp, int len)
mbed_official	0:51ac1d130fd4	447	{
mbed_official	0:51ac1d130fd4	448	int i;
mbed_official	0:51ac1d130fd4	449	struct protent *protp;
mbed_official	0:51ac1d130fd4	450	u_short prot;
mbed_official	0:51ac1d130fd4	451
mbed_official	0:51ac1d130fd4	452	if (len < (int)sizeof (u_short)) {
mbed_official	0:51ac1d130fd4	453	LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd short Protocol-Reject packet!\n"));
mbed_official	0:51ac1d130fd4	454	return;
mbed_official	0:51ac1d130fd4	455	}
mbed_official	0:51ac1d130fd4	456
mbed_official	0:51ac1d130fd4	457	GETSHORT(prot, inp);
mbed_official	0:51ac1d130fd4	458
mbed_official	0:51ac1d130fd4	459	LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd Protocol-Reject packet for %x!\n", prot));
mbed_official	0:51ac1d130fd4	460
mbed_official	0:51ac1d130fd4	461	/*
mbed_official	0:51ac1d130fd4	462	* Protocol-Reject packets received in any state other than the LCP
mbed_official	0:51ac1d130fd4	463	* LS_OPENED state SHOULD be silently discarded.
mbed_official	0:51ac1d130fd4	464	*/
mbed_official	0:51ac1d130fd4	465	if( f->state != LS_OPENED ) {
mbed_official	0:51ac1d130fd4	466	LCPDEBUG(LOG_INFO, ("Protocol-Reject discarded: LCP in state %d\n", f->state));
mbed_official	0:51ac1d130fd4	467	return;
mbed_official	0:51ac1d130fd4	468	}
mbed_official	0:51ac1d130fd4	469
mbed_official	0:51ac1d130fd4	470	/*
mbed_official	0:51ac1d130fd4	471	* Upcall the proper Protocol-Reject routine.
mbed_official	0:51ac1d130fd4	472	*/
mbed_official	0:51ac1d130fd4	473	for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
mbed_official	0:51ac1d130fd4	474	if (protp->protocol == prot && protp->enabled_flag) {
mbed_official	0:51ac1d130fd4	475	(*protp->protrej)(f->unit);
mbed_official	0:51ac1d130fd4	476	return;
mbed_official	0:51ac1d130fd4	477	}
mbed_official	0:51ac1d130fd4	478	}
mbed_official	0:51ac1d130fd4	479
mbed_official	0:51ac1d130fd4	480	LCPDEBUG(LOG_WARNING, ("Protocol-Reject for unsupported protocol 0x%x\n", prot));
mbed_official	0:51ac1d130fd4	481	}
mbed_official	0:51ac1d130fd4	482
mbed_official	0:51ac1d130fd4	483
mbed_official	0:51ac1d130fd4	484	/*
mbed_official	0:51ac1d130fd4	485	* lcp_protrej - A Protocol-Reject was received.
mbed_official	0:51ac1d130fd4	486	*/
mbed_official	0:51ac1d130fd4	487	static void
mbed_official	0:51ac1d130fd4	488	lcp_protrej(int unit)
mbed_official	0:51ac1d130fd4	489	{
mbed_official	0:51ac1d130fd4	490	LWIP_UNUSED_ARG(unit);
mbed_official	0:51ac1d130fd4	491	/*
mbed_official	0:51ac1d130fd4	492	* Can't reject LCP!
mbed_official	0:51ac1d130fd4	493	*/
mbed_official	0:51ac1d130fd4	494	LCPDEBUG(LOG_WARNING, ("lcp_protrej: Received Protocol-Reject for LCP!\n"));
mbed_official	0:51ac1d130fd4	495	fsm_protreject(&lcp_fsm[unit]);
mbed_official	0:51ac1d130fd4	496	}
mbed_official	0:51ac1d130fd4	497
mbed_official	0:51ac1d130fd4	498
mbed_official	0:51ac1d130fd4	499	/*
mbed_official	0:51ac1d130fd4	500	* lcp_sprotrej - Send a Protocol-Reject for some protocol.
mbed_official	0:51ac1d130fd4	501	*/
mbed_official	0:51ac1d130fd4	502	void
mbed_official	0:51ac1d130fd4	503	lcp_sprotrej(int unit, u_char *p, int len)
mbed_official	0:51ac1d130fd4	504	{
mbed_official	0:51ac1d130fd4	505	/*
mbed_official	0:51ac1d130fd4	506	* Send back the protocol and the information field of the
mbed_official	0:51ac1d130fd4	507	* rejected packet. We only get here if LCP is in the LS_OPENED state.
mbed_official	0:51ac1d130fd4	508	*/
mbed_official	0:51ac1d130fd4	509
mbed_official	0:51ac1d130fd4	510	fsm_sdata(&lcp_fsm[unit], PROTREJ, ++lcp_fsm[unit].id, p, len);
mbed_official	0:51ac1d130fd4	511	}
mbed_official	0:51ac1d130fd4	512
mbed_official	0:51ac1d130fd4	513
mbed_official	0:51ac1d130fd4	514	/*
mbed_official	0:51ac1d130fd4	515	* lcp_resetci - Reset our CI.
mbed_official	0:51ac1d130fd4	516	*/
mbed_official	0:51ac1d130fd4	517	static void
mbed_official	0:51ac1d130fd4	518	lcp_resetci(fsm *f)
mbed_official	0:51ac1d130fd4	519	{
mbed_official	0:51ac1d130fd4	520	lcp_wantoptions[f->unit].magicnumber = magic();
mbed_official	0:51ac1d130fd4	521	lcp_wantoptions[f->unit].numloops = 0;
mbed_official	0:51ac1d130fd4	522	lcp_gotoptions[f->unit] = lcp_wantoptions[f->unit];
mbed_official	0:51ac1d130fd4	523	peer_mru[f->unit] = PPP_MRU;
mbed_official	0:51ac1d130fd4	524	auth_reset(f->unit);
mbed_official	0:51ac1d130fd4	525	}
mbed_official	0:51ac1d130fd4	526
mbed_official	0:51ac1d130fd4	527
mbed_official	0:51ac1d130fd4	528	/*
mbed_official	0:51ac1d130fd4	529	* lcp_cilen - Return length of our CI.
mbed_official	0:51ac1d130fd4	530	*/
mbed_official	0:51ac1d130fd4	531	static int
mbed_official	0:51ac1d130fd4	532	lcp_cilen(fsm *f)
mbed_official	0:51ac1d130fd4	533	{
mbed_official	0:51ac1d130fd4	534	lcp_options *go = &lcp_gotoptions[f->unit];
mbed_official	0:51ac1d130fd4	535
mbed_official	0:51ac1d130fd4	536	#define LENCIVOID(neg) ((neg) ? CILEN_VOID : 0)
mbed_official	0:51ac1d130fd4	537	#define LENCICHAP(neg) ((neg) ? CILEN_CHAP : 0)
mbed_official	0:51ac1d130fd4	538	#define LENCISHORT(neg) ((neg) ? CILEN_SHORT : 0)
mbed_official	0:51ac1d130fd4	539	#define LENCILONG(neg) ((neg) ? CILEN_LONG : 0)
mbed_official	0:51ac1d130fd4	540	#define LENCILQR(neg) ((neg) ? CILEN_LQR: 0)
mbed_official	0:51ac1d130fd4	541	#define LENCICBCP(neg) ((neg) ? CILEN_CBCP: 0)
mbed_official	0:51ac1d130fd4	542	/*
mbed_official	0:51ac1d130fd4	543	* NB: we only ask for one of CHAP and UPAP, even if we will
mbed_official	0:51ac1d130fd4	544	* accept either.
mbed_official	0:51ac1d130fd4	545	*/
mbed_official	0:51ac1d130fd4	546	return (LENCISHORT(go->neg_mru && go->mru != PPP_DEFMRU) +
mbed_official	0:51ac1d130fd4	547	LENCILONG(go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) +
mbed_official	0:51ac1d130fd4	548	LENCICHAP(go->neg_chap) +
mbed_official	0:51ac1d130fd4	549	LENCISHORT(!go->neg_chap && go->neg_upap) +
mbed_official	0:51ac1d130fd4	550	LENCILQR(go->neg_lqr) +
mbed_official	0:51ac1d130fd4	551	LENCICBCP(go->neg_cbcp) +
mbed_official	0:51ac1d130fd4	552	LENCILONG(go->neg_magicnumber) +
mbed_official	0:51ac1d130fd4	553	LENCIVOID(go->neg_pcompression) +
mbed_official	0:51ac1d130fd4	554	LENCIVOID(go->neg_accompression));
mbed_official	0:51ac1d130fd4	555	}
mbed_official	0:51ac1d130fd4	556
mbed_official	0:51ac1d130fd4	557
mbed_official	0:51ac1d130fd4	558	/*
mbed_official	0:51ac1d130fd4	559	* lcp_addci - Add our desired CIs to a packet.
mbed_official	0:51ac1d130fd4	560	*/
mbed_official	0:51ac1d130fd4	561	static void
mbed_official	0:51ac1d130fd4	562	lcp_addci(fsm f, u_char ucp, int *lenp)
mbed_official	0:51ac1d130fd4	563	{
mbed_official	0:51ac1d130fd4	564	lcp_options *go = &lcp_gotoptions[f->unit];
mbed_official	0:51ac1d130fd4	565	u_char *start_ucp = ucp;
mbed_official	0:51ac1d130fd4	566
mbed_official	0:51ac1d130fd4	567	#define ADDCIVOID(opt, neg) \
mbed_official	0:51ac1d130fd4	568	if (neg) { \
mbed_official	0:51ac1d130fd4	569	LCPDEBUG(LOG_INFO, ("lcp_addci: opt=%d\n", opt)); \
mbed_official	0:51ac1d130fd4	570	PUTCHAR(opt, ucp); \
mbed_official	0:51ac1d130fd4	571	PUTCHAR(CILEN_VOID, ucp); \
mbed_official	0:51ac1d130fd4	572	}
mbed_official	0:51ac1d130fd4	573	#define ADDCISHORT(opt, neg, val) \
mbed_official	0:51ac1d130fd4	574	if (neg) { \
mbed_official	0:51ac1d130fd4	575	LCPDEBUG(LOG_INFO, ("lcp_addci: INT opt=%d %X\n", opt, val)); \
mbed_official	0:51ac1d130fd4	576	PUTCHAR(opt, ucp); \
mbed_official	0:51ac1d130fd4	577	PUTCHAR(CILEN_SHORT, ucp); \
mbed_official	0:51ac1d130fd4	578	PUTSHORT(val, ucp); \
mbed_official	0:51ac1d130fd4	579	}
mbed_official	0:51ac1d130fd4	580	#define ADDCICHAP(opt, neg, val, digest) \
mbed_official	0:51ac1d130fd4	581	if (neg) { \
mbed_official	0:51ac1d130fd4	582	LCPDEBUG(LOG_INFO, ("lcp_addci: CHAP opt=%d %X\n", opt, val)); \
mbed_official	0:51ac1d130fd4	583	PUTCHAR(opt, ucp); \
mbed_official	0:51ac1d130fd4	584	PUTCHAR(CILEN_CHAP, ucp); \
mbed_official	0:51ac1d130fd4	585	PUTSHORT(val, ucp); \
mbed_official	0:51ac1d130fd4	586	PUTCHAR(digest, ucp); \
mbed_official	0:51ac1d130fd4	587	}
mbed_official	0:51ac1d130fd4	588	#define ADDCILONG(opt, neg, val) \
mbed_official	0:51ac1d130fd4	589	if (neg) { \
mbed_official	0:51ac1d130fd4	590	LCPDEBUG(LOG_INFO, ("lcp_addci: L opt=%d %lX\n", opt, val)); \
mbed_official	0:51ac1d130fd4	591	PUTCHAR(opt, ucp); \
mbed_official	0:51ac1d130fd4	592	PUTCHAR(CILEN_LONG, ucp); \
mbed_official	0:51ac1d130fd4	593	PUTLONG(val, ucp); \
mbed_official	0:51ac1d130fd4	594	}
mbed_official	0:51ac1d130fd4	595	#define ADDCILQR(opt, neg, val) \
mbed_official	0:51ac1d130fd4	596	if (neg) { \
mbed_official	0:51ac1d130fd4	597	LCPDEBUG(LOG_INFO, ("lcp_addci: LQR opt=%d %lX\n", opt, val)); \
mbed_official	0:51ac1d130fd4	598	PUTCHAR(opt, ucp); \
mbed_official	0:51ac1d130fd4	599	PUTCHAR(CILEN_LQR, ucp); \
mbed_official	0:51ac1d130fd4	600	PUTSHORT(PPP_LQR, ucp); \
mbed_official	0:51ac1d130fd4	601	PUTLONG(val, ucp); \
mbed_official	0:51ac1d130fd4	602	}
mbed_official	0:51ac1d130fd4	603	#define ADDCICHAR(opt, neg, val) \
mbed_official	0:51ac1d130fd4	604	if (neg) { \
mbed_official	0:51ac1d130fd4	605	LCPDEBUG(LOG_INFO, ("lcp_addci: CHAR opt=%d %X '%z'\n", opt, val, val)); \
mbed_official	0:51ac1d130fd4	606	PUTCHAR(opt, ucp); \
mbed_official	0:51ac1d130fd4	607	PUTCHAR(CILEN_CHAR, ucp); \
mbed_official	0:51ac1d130fd4	608	PUTCHAR(val, ucp); \
mbed_official	0:51ac1d130fd4	609	}
mbed_official	0:51ac1d130fd4	610
mbed_official	0:51ac1d130fd4	611	ADDCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru);
mbed_official	0:51ac1d130fd4	612	ADDCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap);
mbed_official	0:51ac1d130fd4	613	ADDCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype);
mbed_official	0:51ac1d130fd4	614	ADDCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP);
mbed_official	0:51ac1d130fd4	615	ADDCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period);
mbed_official	0:51ac1d130fd4	616	ADDCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT);
mbed_official	0:51ac1d130fd4	617	ADDCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber);
mbed_official	0:51ac1d130fd4	618	ADDCIVOID(CI_PCOMPRESSION, go->neg_pcompression);
mbed_official	0:51ac1d130fd4	619	ADDCIVOID(CI_ACCOMPRESSION, go->neg_accompression);
mbed_official	0:51ac1d130fd4	620
mbed_official	0:51ac1d130fd4	621	if (ucp - start_ucp != *lenp) {
mbed_official	0:51ac1d130fd4	622	/* this should never happen, because peer_mtu should be 1500 */
mbed_official	0:51ac1d130fd4	623	LCPDEBUG(LOG_ERR, ("Bug in lcp_addci: wrong length\n"));
mbed_official	0:51ac1d130fd4	624	}
mbed_official	0:51ac1d130fd4	625	}
mbed_official	0:51ac1d130fd4	626
mbed_official	0:51ac1d130fd4	627
mbed_official	0:51ac1d130fd4	628	/*
mbed_official	0:51ac1d130fd4	629	* lcp_ackci - Ack our CIs.
mbed_official	0:51ac1d130fd4	630	* This should not modify any state if the Ack is bad.
mbed_official	0:51ac1d130fd4	631	*
mbed_official	0:51ac1d130fd4	632	* Returns:
mbed_official	0:51ac1d130fd4	633	* 0 - Ack was bad.
mbed_official	0:51ac1d130fd4	634	* 1 - Ack was good.
mbed_official	0:51ac1d130fd4	635	*/
mbed_official	0:51ac1d130fd4	636	static int
mbed_official	0:51ac1d130fd4	637	lcp_ackci(fsm f, u_char p, int len)
mbed_official	0:51ac1d130fd4	638	{
mbed_official	0:51ac1d130fd4	639	lcp_options *go = &lcp_gotoptions[f->unit];
mbed_official	0:51ac1d130fd4	640	u_char cilen, citype, cichar;
mbed_official	0:51ac1d130fd4	641	u_short cishort;
mbed_official	0:51ac1d130fd4	642	u32_t cilong;
mbed_official	0:51ac1d130fd4	643
mbed_official	0:51ac1d130fd4	644	/*
mbed_official	0:51ac1d130fd4	645	* CIs must be in exactly the same order that we sent.
mbed_official	0:51ac1d130fd4	646	* Check packet length and CI length at each step.
mbed_official	0:51ac1d130fd4	647	* If we find any deviations, then this packet is bad.
mbed_official	0:51ac1d130fd4	648	*/
mbed_official	0:51ac1d130fd4	649	#define ACKCIVOID(opt, neg) \
mbed_official	0:51ac1d130fd4	650	if (neg) { \
mbed_official	0:51ac1d130fd4	651	if ((len -= CILEN_VOID) < 0) \
mbed_official	0:51ac1d130fd4	652	goto bad; \
mbed_official	0:51ac1d130fd4	653	GETCHAR(citype, p); \
mbed_official	0:51ac1d130fd4	654	GETCHAR(cilen, p); \
mbed_official	0:51ac1d130fd4	655	if (cilen != CILEN_VOID \|\| citype != opt) \
mbed_official	0:51ac1d130fd4	656	goto bad; \
mbed_official	0:51ac1d130fd4	657	}
mbed_official	0:51ac1d130fd4	658	#define ACKCISHORT(opt, neg, val) \
mbed_official	0:51ac1d130fd4	659	if (neg) { \
mbed_official	0:51ac1d130fd4	660	if ((len -= CILEN_SHORT) < 0) \
mbed_official	0:51ac1d130fd4	661	goto bad; \
mbed_official	0:51ac1d130fd4	662	GETCHAR(citype, p); \
mbed_official	0:51ac1d130fd4	663	GETCHAR(cilen, p); \
mbed_official	0:51ac1d130fd4	664	if (cilen != CILEN_SHORT \|\| citype != opt) \
mbed_official	0:51ac1d130fd4	665	goto bad; \
mbed_official	0:51ac1d130fd4	666	GETSHORT(cishort, p); \
mbed_official	0:51ac1d130fd4	667	if (cishort != val) \
mbed_official	0:51ac1d130fd4	668	goto bad; \
mbed_official	0:51ac1d130fd4	669	}
mbed_official	0:51ac1d130fd4	670	#define ACKCICHAR(opt, neg, val) \
mbed_official	0:51ac1d130fd4	671	if (neg) { \
mbed_official	0:51ac1d130fd4	672	if ((len -= CILEN_CHAR) < 0) \
mbed_official	0:51ac1d130fd4	673	goto bad; \
mbed_official	0:51ac1d130fd4	674	GETCHAR(citype, p); \
mbed_official	0:51ac1d130fd4	675	GETCHAR(cilen, p); \
mbed_official	0:51ac1d130fd4	676	if (cilen != CILEN_CHAR \|\| citype != opt) \
mbed_official	0:51ac1d130fd4	677	goto bad; \
mbed_official	0:51ac1d130fd4	678	GETCHAR(cichar, p); \
mbed_official	0:51ac1d130fd4	679	if (cichar != val) \
mbed_official	0:51ac1d130fd4	680	goto bad; \
mbed_official	0:51ac1d130fd4	681	}
mbed_official	0:51ac1d130fd4	682	#define ACKCICHAP(opt, neg, val, digest) \
mbed_official	0:51ac1d130fd4	683	if (neg) { \
mbed_official	0:51ac1d130fd4	684	if ((len -= CILEN_CHAP) < 0) \
mbed_official	0:51ac1d130fd4	685	goto bad; \
mbed_official	0:51ac1d130fd4	686	GETCHAR(citype, p); \
mbed_official	0:51ac1d130fd4	687	GETCHAR(cilen, p); \
mbed_official	0:51ac1d130fd4	688	if (cilen != CILEN_CHAP \|\| citype != opt) \
mbed_official	0:51ac1d130fd4	689	goto bad; \
mbed_official	0:51ac1d130fd4	690	GETSHORT(cishort, p); \
mbed_official	0:51ac1d130fd4	691	if (cishort != val) \
mbed_official	0:51ac1d130fd4	692	goto bad; \
mbed_official	0:51ac1d130fd4	693	GETCHAR(cichar, p); \
mbed_official	0:51ac1d130fd4	694	if (cichar != digest) \
mbed_official	0:51ac1d130fd4	695	goto bad; \
mbed_official	0:51ac1d130fd4	696	}
mbed_official	0:51ac1d130fd4	697	#define ACKCILONG(opt, neg, val) \
mbed_official	0:51ac1d130fd4	698	if (neg) { \
mbed_official	0:51ac1d130fd4	699	if ((len -= CILEN_LONG) < 0) \
mbed_official	0:51ac1d130fd4	700	goto bad; \
mbed_official	0:51ac1d130fd4	701	GETCHAR(citype, p); \
mbed_official	0:51ac1d130fd4	702	GETCHAR(cilen, p); \
mbed_official	0:51ac1d130fd4	703	if (cilen != CILEN_LONG \|\| citype != opt) \
mbed_official	0:51ac1d130fd4	704	goto bad; \
mbed_official	0:51ac1d130fd4	705	GETLONG(cilong, p); \
mbed_official	0:51ac1d130fd4	706	if (cilong != val) \
mbed_official	0:51ac1d130fd4	707	goto bad; \
mbed_official	0:51ac1d130fd4	708	}
mbed_official	0:51ac1d130fd4	709	#define ACKCILQR(opt, neg, val) \
mbed_official	0:51ac1d130fd4	710	if (neg) { \
mbed_official	0:51ac1d130fd4	711	if ((len -= CILEN_LQR) < 0) \
mbed_official	0:51ac1d130fd4	712	goto bad; \
mbed_official	0:51ac1d130fd4	713	GETCHAR(citype, p); \
mbed_official	0:51ac1d130fd4	714	GETCHAR(cilen, p); \
mbed_official	0:51ac1d130fd4	715	if (cilen != CILEN_LQR \|\| citype != opt) \
mbed_official	0:51ac1d130fd4	716	goto bad; \
mbed_official	0:51ac1d130fd4	717	GETSHORT(cishort, p); \
mbed_official	0:51ac1d130fd4	718	if (cishort != PPP_LQR) \
mbed_official	0:51ac1d130fd4	719	goto bad; \
mbed_official	0:51ac1d130fd4	720	GETLONG(cilong, p); \
mbed_official	0:51ac1d130fd4	721	if (cilong != val) \
mbed_official	0:51ac1d130fd4	722	goto bad; \
mbed_official	0:51ac1d130fd4	723	}
mbed_official	0:51ac1d130fd4	724
mbed_official	0:51ac1d130fd4	725	ACKCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru);
mbed_official	0:51ac1d130fd4	726	ACKCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap);
mbed_official	0:51ac1d130fd4	727	ACKCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype);
mbed_official	0:51ac1d130fd4	728	ACKCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP);
mbed_official	0:51ac1d130fd4	729	ACKCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period);
mbed_official	0:51ac1d130fd4	730	ACKCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT);
mbed_official	0:51ac1d130fd4	731	ACKCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber);
mbed_official	0:51ac1d130fd4	732	ACKCIVOID(CI_PCOMPRESSION, go->neg_pcompression);
mbed_official	0:51ac1d130fd4	733	ACKCIVOID(CI_ACCOMPRESSION, go->neg_accompression);
mbed_official	0:51ac1d130fd4	734
mbed_official	0:51ac1d130fd4	735	/*
mbed_official	0:51ac1d130fd4	736	* If there are any remaining CIs, then this packet is bad.
mbed_official	0:51ac1d130fd4	737	*/
mbed_official	0:51ac1d130fd4	738	if (len != 0) {
mbed_official	0:51ac1d130fd4	739	goto bad;
mbed_official	0:51ac1d130fd4	740	}
mbed_official	0:51ac1d130fd4	741	LCPDEBUG(LOG_INFO, ("lcp_acki: Ack\n"));
mbed_official	0:51ac1d130fd4	742	return (1);
mbed_official	0:51ac1d130fd4	743	bad:
mbed_official	0:51ac1d130fd4	744	LCPDEBUG(LOG_WARNING, ("lcp_acki: received bad Ack!\n"));
mbed_official	0:51ac1d130fd4	745	return (0);
mbed_official	0:51ac1d130fd4	746	}
mbed_official	0:51ac1d130fd4	747
mbed_official	0:51ac1d130fd4	748
mbed_official	0:51ac1d130fd4	749	/*
mbed_official	0:51ac1d130fd4	750	* lcp_nakci - Peer has sent a NAK for some of our CIs.
mbed_official	0:51ac1d130fd4	751	* This should not modify any state if the Nak is bad
mbed_official	0:51ac1d130fd4	752	* or if LCP is in the LS_OPENED state.
mbed_official	0:51ac1d130fd4	753	*
mbed_official	0:51ac1d130fd4	754	* Returns:
mbed_official	0:51ac1d130fd4	755	* 0 - Nak was bad.
mbed_official	0:51ac1d130fd4	756	* 1 - Nak was good.
mbed_official	0:51ac1d130fd4	757	*/
mbed_official	0:51ac1d130fd4	758	static int
mbed_official	0:51ac1d130fd4	759	lcp_nakci(fsm f, u_char p, int len)
mbed_official	0:51ac1d130fd4	760	{
mbed_official	0:51ac1d130fd4	761	lcp_options *go = &lcp_gotoptions[f->unit];
mbed_official	0:51ac1d130fd4	762	lcp_options *wo = &lcp_wantoptions[f->unit];
mbed_official	0:51ac1d130fd4	763	u_char citype, cichar, *next;
mbed_official	0:51ac1d130fd4	764	u_short cishort;
mbed_official	0:51ac1d130fd4	765	u32_t cilong;
mbed_official	0:51ac1d130fd4	766	lcp_options no; /* options we've seen Naks for */
mbed_official	0:51ac1d130fd4	767	lcp_options try; /* options to request next time */
mbed_official	0:51ac1d130fd4	768	int looped_back = 0;
mbed_official	0:51ac1d130fd4	769	int cilen;
mbed_official	0:51ac1d130fd4	770
mbed_official	0:51ac1d130fd4	771	BZERO(&no, sizeof(no));
mbed_official	0:51ac1d130fd4	772	try = *go;
mbed_official	0:51ac1d130fd4	773
mbed_official	0:51ac1d130fd4	774	/*
mbed_official	0:51ac1d130fd4	775	* Any Nak'd CIs must be in exactly the same order that we sent.
mbed_official	0:51ac1d130fd4	776	* Check packet length and CI length at each step.
mbed_official	0:51ac1d130fd4	777	* If we find any deviations, then this packet is bad.
mbed_official	0:51ac1d130fd4	778	*/
mbed_official	0:51ac1d130fd4	779	#define NAKCIVOID(opt, neg, code) \
mbed_official	0:51ac1d130fd4	780	if (go->neg && \
mbed_official	0:51ac1d130fd4	781	len >= CILEN_VOID && \
mbed_official	0:51ac1d130fd4	782	p[1] == CILEN_VOID && \
mbed_official	0:51ac1d130fd4	783	p[0] == opt) { \
mbed_official	0:51ac1d130fd4	784	len -= CILEN_VOID; \
mbed_official	0:51ac1d130fd4	785	INCPTR(CILEN_VOID, p); \
mbed_official	0:51ac1d130fd4	786	no.neg = 1; \
mbed_official	0:51ac1d130fd4	787	code \
mbed_official	0:51ac1d130fd4	788	}
mbed_official	0:51ac1d130fd4	789	#define NAKCICHAP(opt, neg, code) \
mbed_official	0:51ac1d130fd4	790	if (go->neg && \
mbed_official	0:51ac1d130fd4	791	len >= CILEN_CHAP && \
mbed_official	0:51ac1d130fd4	792	p[1] == CILEN_CHAP && \
mbed_official	0:51ac1d130fd4	793	p[0] == opt) { \
mbed_official	0:51ac1d130fd4	794	len -= CILEN_CHAP; \
mbed_official	0:51ac1d130fd4	795	INCPTR(2, p); \
mbed_official	0:51ac1d130fd4	796	GETSHORT(cishort, p); \
mbed_official	0:51ac1d130fd4	797	GETCHAR(cichar, p); \
mbed_official	0:51ac1d130fd4	798	no.neg = 1; \
mbed_official	0:51ac1d130fd4	799	code \
mbed_official	0:51ac1d130fd4	800	}
mbed_official	0:51ac1d130fd4	801	#define NAKCICHAR(opt, neg, code) \
mbed_official	0:51ac1d130fd4	802	if (go->neg && \
mbed_official	0:51ac1d130fd4	803	len >= CILEN_CHAR && \
mbed_official	0:51ac1d130fd4	804	p[1] == CILEN_CHAR && \
mbed_official	0:51ac1d130fd4	805	p[0] == opt) { \
mbed_official	0:51ac1d130fd4	806	len -= CILEN_CHAR; \
mbed_official	0:51ac1d130fd4	807	INCPTR(2, p); \
mbed_official	0:51ac1d130fd4	808	GETCHAR(cichar, p); \
mbed_official	0:51ac1d130fd4	809	no.neg = 1; \
mbed_official	0:51ac1d130fd4	810	code \
mbed_official	0:51ac1d130fd4	811	}
mbed_official	0:51ac1d130fd4	812	#define NAKCISHORT(opt, neg, code) \
mbed_official	0:51ac1d130fd4	813	if (go->neg && \
mbed_official	0:51ac1d130fd4	814	len >= CILEN_SHORT && \
mbed_official	0:51ac1d130fd4	815	p[1] == CILEN_SHORT && \
mbed_official	0:51ac1d130fd4	816	p[0] == opt) { \
mbed_official	0:51ac1d130fd4	817	len -= CILEN_SHORT; \
mbed_official	0:51ac1d130fd4	818	INCPTR(2, p); \
mbed_official	0:51ac1d130fd4	819	GETSHORT(cishort, p); \
mbed_official	0:51ac1d130fd4	820	no.neg = 1; \
mbed_official	0:51ac1d130fd4	821	code \
mbed_official	0:51ac1d130fd4	822	}
mbed_official	0:51ac1d130fd4	823	#define NAKCILONG(opt, neg, code) \
mbed_official	0:51ac1d130fd4	824	if (go->neg && \
mbed_official	0:51ac1d130fd4	825	len >= CILEN_LONG && \
mbed_official	0:51ac1d130fd4	826	p[1] == CILEN_LONG && \
mbed_official	0:51ac1d130fd4	827	p[0] == opt) { \
mbed_official	0:51ac1d130fd4	828	len -= CILEN_LONG; \
mbed_official	0:51ac1d130fd4	829	INCPTR(2, p); \
mbed_official	0:51ac1d130fd4	830	GETLONG(cilong, p); \
mbed_official	0:51ac1d130fd4	831	no.neg = 1; \
mbed_official	0:51ac1d130fd4	832	code \
mbed_official	0:51ac1d130fd4	833	}
mbed_official	0:51ac1d130fd4	834	#define NAKCILQR(opt, neg, code) \
mbed_official	0:51ac1d130fd4	835	if (go->neg && \
mbed_official	0:51ac1d130fd4	836	len >= CILEN_LQR && \
mbed_official	0:51ac1d130fd4	837	p[1] == CILEN_LQR && \
mbed_official	0:51ac1d130fd4	838	p[0] == opt) { \
mbed_official	0:51ac1d130fd4	839	len -= CILEN_LQR; \
mbed_official	0:51ac1d130fd4	840	INCPTR(2, p); \
mbed_official	0:51ac1d130fd4	841	GETSHORT(cishort, p); \
mbed_official	0:51ac1d130fd4	842	GETLONG(cilong, p); \
mbed_official	0:51ac1d130fd4	843	no.neg = 1; \
mbed_official	0:51ac1d130fd4	844	code \
mbed_official	0:51ac1d130fd4	845	}
mbed_official	0:51ac1d130fd4	846
mbed_official	0:51ac1d130fd4	847	/*
mbed_official	0:51ac1d130fd4	848	* We don't care if they want to send us smaller packets than
mbed_official	0:51ac1d130fd4	849	* we want. Therefore, accept any MRU less than what we asked for,
mbed_official	0:51ac1d130fd4	850	* but then ignore the new value when setting the MRU in the kernel.
mbed_official	0:51ac1d130fd4	851	* If they send us a bigger MRU than what we asked, accept it, up to
mbed_official	0:51ac1d130fd4	852	* the limit of the default MRU we'd get if we didn't negotiate.
mbed_official	0:51ac1d130fd4	853	*/
mbed_official	0:51ac1d130fd4	854	if (go->neg_mru && go->mru != PPP_DEFMRU) {
mbed_official	0:51ac1d130fd4	855	NAKCISHORT(CI_MRU, neg_mru,
mbed_official	0:51ac1d130fd4	856	if (cishort <= wo->mru \|\| cishort < PPP_DEFMRU) {
mbed_official	0:51ac1d130fd4	857	try.mru = cishort;
mbed_official	0:51ac1d130fd4	858	}
mbed_official	0:51ac1d130fd4	859	);
mbed_official	0:51ac1d130fd4	860	}
mbed_official	0:51ac1d130fd4	861
mbed_official	0:51ac1d130fd4	862	/*
mbed_official	0:51ac1d130fd4	863	* Add any characters they want to our (receive-side) asyncmap.
mbed_official	0:51ac1d130fd4	864	*/
mbed_official	0:51ac1d130fd4	865	if (go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) {
mbed_official	0:51ac1d130fd4	866	NAKCILONG(CI_ASYNCMAP, neg_asyncmap,
mbed_official	0:51ac1d130fd4	867	try.asyncmap = go->asyncmap \| cilong;
mbed_official	0:51ac1d130fd4	868	);
mbed_official	0:51ac1d130fd4	869	}
mbed_official	0:51ac1d130fd4	870
mbed_official	0:51ac1d130fd4	871	/*
mbed_official	0:51ac1d130fd4	872	* If they've nak'd our authentication-protocol, check whether
mbed_official	0:51ac1d130fd4	873	* they are proposing a different protocol, or a different
mbed_official	0:51ac1d130fd4	874	* hash algorithm for CHAP.
mbed_official	0:51ac1d130fd4	875	*/
mbed_official	0:51ac1d130fd4	876	if ((go->neg_chap \|\| go->neg_upap)
mbed_official	0:51ac1d130fd4	877	&& len >= CILEN_SHORT
mbed_official	0:51ac1d130fd4	878	&& p[0] == CI_AUTHTYPE && p[1] >= CILEN_SHORT && p[1] <= len) {
mbed_official	0:51ac1d130fd4	879	cilen = p[1];
mbed_official	0:51ac1d130fd4	880	len -= cilen;
mbed_official	0:51ac1d130fd4	881	no.neg_chap = go->neg_chap;
mbed_official	0:51ac1d130fd4	882	no.neg_upap = go->neg_upap;
mbed_official	0:51ac1d130fd4	883	INCPTR(2, p);
mbed_official	0:51ac1d130fd4	884	GETSHORT(cishort, p);
mbed_official	0:51ac1d130fd4	885	if (cishort == PPP_PAP && cilen == CILEN_SHORT) {
mbed_official	0:51ac1d130fd4	886	/*
mbed_official	0:51ac1d130fd4	887	* If we were asking for CHAP, they obviously don't want to do it.
mbed_official	0:51ac1d130fd4	888	* If we weren't asking for CHAP, then we were asking for PAP,
mbed_official	0:51ac1d130fd4	889	* in which case this Nak is bad.
mbed_official	0:51ac1d130fd4	890	*/
mbed_official	0:51ac1d130fd4	891	if (!go->neg_chap) {
mbed_official	0:51ac1d130fd4	892	goto bad;
mbed_official	0:51ac1d130fd4	893	}
mbed_official	0:51ac1d130fd4	894	try.neg_chap = 0;
mbed_official	0:51ac1d130fd4	895
mbed_official	0:51ac1d130fd4	896	} else if (cishort == PPP_CHAP && cilen == CILEN_CHAP) {
mbed_official	0:51ac1d130fd4	897	GETCHAR(cichar, p);
mbed_official	0:51ac1d130fd4	898	if (go->neg_chap) {
mbed_official	0:51ac1d130fd4	899	/*
mbed_official	0:51ac1d130fd4	900	* We were asking for CHAP/MD5; they must want a different
mbed_official	0:51ac1d130fd4	901	* algorithm. If they can't do MD5, we'll have to stop
mbed_official	0:51ac1d130fd4	902	* asking for CHAP.
mbed_official	0:51ac1d130fd4	903	*/
mbed_official	0:51ac1d130fd4	904	if (cichar != go->chap_mdtype) {
mbed_official	0:51ac1d130fd4	905	try.neg_chap = 0;
mbed_official	0:51ac1d130fd4	906	}
mbed_official	0:51ac1d130fd4	907	} else {
mbed_official	0:51ac1d130fd4	908	/*
mbed_official	0:51ac1d130fd4	909	* Stop asking for PAP if we were asking for it.
mbed_official	0:51ac1d130fd4	910	*/
mbed_official	0:51ac1d130fd4	911	try.neg_upap = 0;
mbed_official	0:51ac1d130fd4	912	}
mbed_official	0:51ac1d130fd4	913
mbed_official	0:51ac1d130fd4	914	} else {
mbed_official	0:51ac1d130fd4	915	/*
mbed_official	0:51ac1d130fd4	916	* We don't recognize what they're suggesting.
mbed_official	0:51ac1d130fd4	917	* Stop asking for what we were asking for.
mbed_official	0:51ac1d130fd4	918	*/
mbed_official	0:51ac1d130fd4	919	if (go->neg_chap) {
mbed_official	0:51ac1d130fd4	920	try.neg_chap = 0;
mbed_official	0:51ac1d130fd4	921	} else {
mbed_official	0:51ac1d130fd4	922	try.neg_upap = 0;
mbed_official	0:51ac1d130fd4	923	}
mbed_official	0:51ac1d130fd4	924	p += cilen - CILEN_SHORT;
mbed_official	0:51ac1d130fd4	925	}
mbed_official	0:51ac1d130fd4	926	}
mbed_official	0:51ac1d130fd4	927
mbed_official	0:51ac1d130fd4	928	/*
mbed_official	0:51ac1d130fd4	929	* If they can't cope with our link quality protocol, we'll have
mbed_official	0:51ac1d130fd4	930	* to stop asking for LQR. We haven't got any other protocol.
mbed_official	0:51ac1d130fd4	931	* If they Nak the reporting period, take their value XXX ?
mbed_official	0:51ac1d130fd4	932	*/
mbed_official	0:51ac1d130fd4	933	NAKCILQR(CI_QUALITY, neg_lqr,
mbed_official	0:51ac1d130fd4	934	if (cishort != PPP_LQR) {
mbed_official	0:51ac1d130fd4	935	try.neg_lqr = 0;
mbed_official	0:51ac1d130fd4	936	} else {
mbed_official	0:51ac1d130fd4	937	try.lqr_period = cilong;
mbed_official	0:51ac1d130fd4	938	}
mbed_official	0:51ac1d130fd4	939	);
mbed_official	0:51ac1d130fd4	940
mbed_official	0:51ac1d130fd4	941	/*
mbed_official	0:51ac1d130fd4	942	* Only implementing CBCP...not the rest of the callback options
mbed_official	0:51ac1d130fd4	943	*/
mbed_official	0:51ac1d130fd4	944	NAKCICHAR(CI_CALLBACK, neg_cbcp,
mbed_official	0:51ac1d130fd4	945	try.neg_cbcp = 0;
mbed_official	0:51ac1d130fd4	946	);
mbed_official	0:51ac1d130fd4	947
mbed_official	0:51ac1d130fd4	948	/*
mbed_official	0:51ac1d130fd4	949	* Check for a looped-back line.
mbed_official	0:51ac1d130fd4	950	*/
mbed_official	0:51ac1d130fd4	951	NAKCILONG(CI_MAGICNUMBER, neg_magicnumber,
mbed_official	0:51ac1d130fd4	952	try.magicnumber = magic();
mbed_official	0:51ac1d130fd4	953	looped_back = 1;
mbed_official	0:51ac1d130fd4	954	);
mbed_official	0:51ac1d130fd4	955
mbed_official	0:51ac1d130fd4	956	/*
mbed_official	0:51ac1d130fd4	957	* Peer shouldn't send Nak for protocol compression or
mbed_official	0:51ac1d130fd4	958	* address/control compression requests; they should send
mbed_official	0:51ac1d130fd4	959	* a Reject instead. If they send a Nak, treat it as a Reject.
mbed_official	0:51ac1d130fd4	960	*/
mbed_official	0:51ac1d130fd4	961	NAKCIVOID(CI_PCOMPRESSION, neg_pcompression,
mbed_official	0:51ac1d130fd4	962	try.neg_pcompression = 0;
mbed_official	0:51ac1d130fd4	963	);
mbed_official	0:51ac1d130fd4	964	NAKCIVOID(CI_ACCOMPRESSION, neg_accompression,
mbed_official	0:51ac1d130fd4	965	try.neg_accompression = 0;
mbed_official	0:51ac1d130fd4	966	);
mbed_official	0:51ac1d130fd4	967
mbed_official	0:51ac1d130fd4	968	/*
mbed_official	0:51ac1d130fd4	969	* There may be remaining CIs, if the peer is requesting negotiation
mbed_official	0:51ac1d130fd4	970	* on an option that we didn't include in our request packet.
mbed_official	0:51ac1d130fd4	971	* If we see an option that we requested, or one we've already seen
mbed_official	0:51ac1d130fd4	972	* in this packet, then this packet is bad.
mbed_official	0:51ac1d130fd4	973	* If we wanted to respond by starting to negotiate on the requested
mbed_official	0:51ac1d130fd4	974	* option(s), we could, but we don't, because except for the
mbed_official	0:51ac1d130fd4	975	* authentication type and quality protocol, if we are not negotiating
mbed_official	0:51ac1d130fd4	976	* an option, it is because we were told not to.
mbed_official	0:51ac1d130fd4	977	* For the authentication type, the Nak from the peer means
mbed_official	0:51ac1d130fd4	978	* `let me authenticate myself with you' which is a bit pointless.
mbed_official	0:51ac1d130fd4	979	* For the quality protocol, the Nak means `ask me to send you quality
mbed_official	0:51ac1d130fd4	980	* reports', but if we didn't ask for them, we don't want them.
mbed_official	0:51ac1d130fd4	981	* An option we don't recognize represents the peer asking to
mbed_official	0:51ac1d130fd4	982	* negotiate some option we don't support, so ignore it.
mbed_official	0:51ac1d130fd4	983	*/
mbed_official	0:51ac1d130fd4	984	while (len > CILEN_VOID) {
mbed_official	0:51ac1d130fd4	985	GETCHAR(citype, p);
mbed_official	0:51ac1d130fd4	986	GETCHAR(cilen, p);
mbed_official	0:51ac1d130fd4	987	if (cilen < CILEN_VOID \|\| (len -= cilen) < 0) {
mbed_official	0:51ac1d130fd4	988	goto bad;
mbed_official	0:51ac1d130fd4	989	}
mbed_official	0:51ac1d130fd4	990	next = p + cilen - 2;
mbed_official	0:51ac1d130fd4	991
mbed_official	0:51ac1d130fd4	992	switch (citype) {
mbed_official	0:51ac1d130fd4	993	case CI_MRU:
mbed_official	0:51ac1d130fd4	994	if ((go->neg_mru && go->mru != PPP_DEFMRU)
mbed_official	0:51ac1d130fd4	995	\|\| no.neg_mru \|\| cilen != CILEN_SHORT) {
mbed_official	0:51ac1d130fd4	996	goto bad;
mbed_official	0:51ac1d130fd4	997	}
mbed_official	0:51ac1d130fd4	998	GETSHORT(cishort, p);
mbed_official	0:51ac1d130fd4	999	if (cishort < PPP_DEFMRU) {
mbed_official	0:51ac1d130fd4	1000	try.mru = cishort;
mbed_official	0:51ac1d130fd4	1001	}
mbed_official	0:51ac1d130fd4	1002	break;
mbed_official	0:51ac1d130fd4	1003	case CI_ASYNCMAP:
mbed_official	0:51ac1d130fd4	1004	if ((go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl)
mbed_official	0:51ac1d130fd4	1005	\|\| no.neg_asyncmap \|\| cilen != CILEN_LONG) {
mbed_official	0:51ac1d130fd4	1006	goto bad;
mbed_official	0:51ac1d130fd4	1007	}
mbed_official	0:51ac1d130fd4	1008	break;
mbed_official	0:51ac1d130fd4	1009	case CI_AUTHTYPE:
mbed_official	0:51ac1d130fd4	1010	if (go->neg_chap \|\| no.neg_chap \|\| go->neg_upap \|\| no.neg_upap) {
mbed_official	0:51ac1d130fd4	1011	goto bad;
mbed_official	0:51ac1d130fd4	1012	}
mbed_official	0:51ac1d130fd4	1013	break;
mbed_official	0:51ac1d130fd4	1014	case CI_MAGICNUMBER:
mbed_official	0:51ac1d130fd4	1015	if (go->neg_magicnumber \|\| no.neg_magicnumber \|\|
mbed_official	0:51ac1d130fd4	1016	cilen != CILEN_LONG) {
mbed_official	0:51ac1d130fd4	1017	goto bad;
mbed_official	0:51ac1d130fd4	1018	}
mbed_official	0:51ac1d130fd4	1019	break;
mbed_official	0:51ac1d130fd4	1020	case CI_PCOMPRESSION:
mbed_official	0:51ac1d130fd4	1021	if (go->neg_pcompression \|\| no.neg_pcompression
mbed_official	0:51ac1d130fd4	1022	\|\| cilen != CILEN_VOID) {
mbed_official	0:51ac1d130fd4	1023	goto bad;
mbed_official	0:51ac1d130fd4	1024	}
mbed_official	0:51ac1d130fd4	1025	break;
mbed_official	0:51ac1d130fd4	1026	case CI_ACCOMPRESSION:
mbed_official	0:51ac1d130fd4	1027	if (go->neg_accompression \|\| no.neg_accompression
mbed_official	0:51ac1d130fd4	1028	\|\| cilen != CILEN_VOID) {
mbed_official	0:51ac1d130fd4	1029	goto bad;
mbed_official	0:51ac1d130fd4	1030	}
mbed_official	0:51ac1d130fd4	1031	break;
mbed_official	0:51ac1d130fd4	1032	case CI_QUALITY:
mbed_official	0:51ac1d130fd4	1033	if (go->neg_lqr \|\| no.neg_lqr \|\| cilen != CILEN_LQR) {
mbed_official	0:51ac1d130fd4	1034	goto bad;
mbed_official	0:51ac1d130fd4	1035	}
mbed_official	0:51ac1d130fd4	1036	break;
mbed_official	0:51ac1d130fd4	1037	}
mbed_official	0:51ac1d130fd4	1038	p = next;
mbed_official	0:51ac1d130fd4	1039	}
mbed_official	0:51ac1d130fd4	1040
mbed_official	0:51ac1d130fd4	1041	/* If there is still anything left, this packet is bad. */
mbed_official	0:51ac1d130fd4	1042	if (len != 0) {
mbed_official	0:51ac1d130fd4	1043	goto bad;
mbed_official	0:51ac1d130fd4	1044	}
mbed_official	0:51ac1d130fd4	1045
mbed_official	0:51ac1d130fd4	1046	/*
mbed_official	0:51ac1d130fd4	1047	* OK, the Nak is good. Now we can update state.
mbed_official	0:51ac1d130fd4	1048	*/
mbed_official	0:51ac1d130fd4	1049	if (f->state != LS_OPENED) {
mbed_official	0:51ac1d130fd4	1050	if (looped_back) {
mbed_official	0:51ac1d130fd4	1051	if (++try.numloops >= lcp_loopbackfail) {
mbed_official	0:51ac1d130fd4	1052	LCPDEBUG(LOG_NOTICE, ("Serial line is looped back.\n"));
mbed_official	0:51ac1d130fd4	1053	lcp_close(f->unit, "Loopback detected");
mbed_official	0:51ac1d130fd4	1054	}
mbed_official	0:51ac1d130fd4	1055	} else {
mbed_official	0:51ac1d130fd4	1056	try.numloops = 0;
mbed_official	0:51ac1d130fd4	1057	}
mbed_official	0:51ac1d130fd4	1058	*go = try;
mbed_official	0:51ac1d130fd4	1059	}
mbed_official	0:51ac1d130fd4	1060
mbed_official	0:51ac1d130fd4	1061	return 1;
mbed_official	0:51ac1d130fd4	1062
mbed_official	0:51ac1d130fd4	1063	bad:
mbed_official	0:51ac1d130fd4	1064	LCPDEBUG(LOG_WARNING, ("lcp_nakci: received bad Nak!\n"));
mbed_official	0:51ac1d130fd4	1065	return 0;
mbed_official	0:51ac1d130fd4	1066	}
mbed_official	0:51ac1d130fd4	1067
mbed_official	0:51ac1d130fd4	1068
mbed_official	0:51ac1d130fd4	1069	/*
mbed_official	0:51ac1d130fd4	1070	* lcp_rejci - Peer has Rejected some of our CIs.
mbed_official	0:51ac1d130fd4	1071	* This should not modify any state if the Reject is bad
mbed_official	0:51ac1d130fd4	1072	* or if LCP is in the LS_OPENED state.
mbed_official	0:51ac1d130fd4	1073	*
mbed_official	0:51ac1d130fd4	1074	* Returns:
mbed_official	0:51ac1d130fd4	1075	* 0 - Reject was bad.
mbed_official	0:51ac1d130fd4	1076	* 1 - Reject was good.
mbed_official	0:51ac1d130fd4	1077	*/
mbed_official	0:51ac1d130fd4	1078	static int
mbed_official	0:51ac1d130fd4	1079	lcp_rejci(fsm f, u_char p, int len)
mbed_official	0:51ac1d130fd4	1080	{
mbed_official	0:51ac1d130fd4	1081	lcp_options *go = &lcp_gotoptions[f->unit];
mbed_official	0:51ac1d130fd4	1082	u_char cichar;
mbed_official	0:51ac1d130fd4	1083	u_short cishort;
mbed_official	0:51ac1d130fd4	1084	u32_t cilong;
mbed_official	0:51ac1d130fd4	1085	lcp_options try; /* options to request next time */
mbed_official	0:51ac1d130fd4	1086
mbed_official	0:51ac1d130fd4	1087	try = *go;
mbed_official	0:51ac1d130fd4	1088
mbed_official	0:51ac1d130fd4	1089	/*
mbed_official	0:51ac1d130fd4	1090	* Any Rejected CIs must be in exactly the same order that we sent.
mbed_official	0:51ac1d130fd4	1091	* Check packet length and CI length at each step.
mbed_official	0:51ac1d130fd4	1092	* If we find any deviations, then this packet is bad.
mbed_official	0:51ac1d130fd4	1093	*/
mbed_official	0:51ac1d130fd4	1094	#define REJCIVOID(opt, neg) \
mbed_official	0:51ac1d130fd4	1095	if (go->neg && \
mbed_official	0:51ac1d130fd4	1096	len >= CILEN_VOID && \
mbed_official	0:51ac1d130fd4	1097	p[1] == CILEN_VOID && \
mbed_official	0:51ac1d130fd4	1098	p[0] == opt) { \
mbed_official	0:51ac1d130fd4	1099	len -= CILEN_VOID; \
mbed_official	0:51ac1d130fd4	1100	INCPTR(CILEN_VOID, p); \
mbed_official	0:51ac1d130fd4	1101	try.neg = 0; \
mbed_official	0:51ac1d130fd4	1102	LCPDEBUG(LOG_INFO, ("lcp_rejci: void opt %d rejected\n", opt)); \
mbed_official	0:51ac1d130fd4	1103	}
mbed_official	0:51ac1d130fd4	1104	#define REJCISHORT(opt, neg, val) \
mbed_official	0:51ac1d130fd4	1105	if (go->neg && \
mbed_official	0:51ac1d130fd4	1106	len >= CILEN_SHORT && \
mbed_official	0:51ac1d130fd4	1107	p[1] == CILEN_SHORT && \
mbed_official	0:51ac1d130fd4	1108	p[0] == opt) { \
mbed_official	0:51ac1d130fd4	1109	len -= CILEN_SHORT; \
mbed_official	0:51ac1d130fd4	1110	INCPTR(2, p); \
mbed_official	0:51ac1d130fd4	1111	GETSHORT(cishort, p); \
mbed_official	0:51ac1d130fd4	1112	/* Check rejected value. */ \
mbed_official	0:51ac1d130fd4	1113	if (cishort != val) { \
mbed_official	0:51ac1d130fd4	1114	goto bad; \
mbed_official	0:51ac1d130fd4	1115	} \
mbed_official	0:51ac1d130fd4	1116	try.neg = 0; \
mbed_official	0:51ac1d130fd4	1117	LCPDEBUG(LOG_INFO, ("lcp_rejci: short opt %d rejected\n", opt)); \
mbed_official	0:51ac1d130fd4	1118	}
mbed_official	0:51ac1d130fd4	1119	#define REJCICHAP(opt, neg, val, digest) \
mbed_official	0:51ac1d130fd4	1120	if (go->neg && \
mbed_official	0:51ac1d130fd4	1121	len >= CILEN_CHAP && \
mbed_official	0:51ac1d130fd4	1122	p[1] == CILEN_CHAP && \
mbed_official	0:51ac1d130fd4	1123	p[0] == opt) { \
mbed_official	0:51ac1d130fd4	1124	len -= CILEN_CHAP; \
mbed_official	0:51ac1d130fd4	1125	INCPTR(2, p); \
mbed_official	0:51ac1d130fd4	1126	GETSHORT(cishort, p); \
mbed_official	0:51ac1d130fd4	1127	GETCHAR(cichar, p); \
mbed_official	0:51ac1d130fd4	1128	/* Check rejected value. */ \
mbed_official	0:51ac1d130fd4	1129	if (cishort != val \|\| cichar != digest) { \
mbed_official	0:51ac1d130fd4	1130	goto bad; \
mbed_official	0:51ac1d130fd4	1131	} \
mbed_official	0:51ac1d130fd4	1132	try.neg = 0; \
mbed_official	0:51ac1d130fd4	1133	try.neg_upap = 0; \
mbed_official	0:51ac1d130fd4	1134	LCPDEBUG(LOG_INFO, ("lcp_rejci: chap opt %d rejected\n", opt)); \
mbed_official	0:51ac1d130fd4	1135	}
mbed_official	0:51ac1d130fd4	1136	#define REJCILONG(opt, neg, val) \
mbed_official	0:51ac1d130fd4	1137	if (go->neg && \
mbed_official	0:51ac1d130fd4	1138	len >= CILEN_LONG && \
mbed_official	0:51ac1d130fd4	1139	p[1] == CILEN_LONG && \
mbed_official	0:51ac1d130fd4	1140	p[0] == opt) { \
mbed_official	0:51ac1d130fd4	1141	len -= CILEN_LONG; \
mbed_official	0:51ac1d130fd4	1142	INCPTR(2, p); \
mbed_official	0:51ac1d130fd4	1143	GETLONG(cilong, p); \
mbed_official	0:51ac1d130fd4	1144	/* Check rejected value. */ \
mbed_official	0:51ac1d130fd4	1145	if (cilong != val) { \
mbed_official	0:51ac1d130fd4	1146	goto bad; \
mbed_official	0:51ac1d130fd4	1147	} \
mbed_official	0:51ac1d130fd4	1148	try.neg = 0; \
mbed_official	0:51ac1d130fd4	1149	LCPDEBUG(LOG_INFO, ("lcp_rejci: long opt %d rejected\n", opt)); \
mbed_official	0:51ac1d130fd4	1150	}
mbed_official	0:51ac1d130fd4	1151	#define REJCILQR(opt, neg, val) \
mbed_official	0:51ac1d130fd4	1152	if (go->neg && \
mbed_official	0:51ac1d130fd4	1153	len >= CILEN_LQR && \
mbed_official	0:51ac1d130fd4	1154	p[1] == CILEN_LQR && \
mbed_official	0:51ac1d130fd4	1155	p[0] == opt) { \
mbed_official	0:51ac1d130fd4	1156	len -= CILEN_LQR; \
mbed_official	0:51ac1d130fd4	1157	INCPTR(2, p); \
mbed_official	0:51ac1d130fd4	1158	GETSHORT(cishort, p); \
mbed_official	0:51ac1d130fd4	1159	GETLONG(cilong, p); \
mbed_official	0:51ac1d130fd4	1160	/* Check rejected value. */ \
mbed_official	0:51ac1d130fd4	1161	if (cishort != PPP_LQR \|\| cilong != val) { \
mbed_official	0:51ac1d130fd4	1162	goto bad; \
mbed_official	0:51ac1d130fd4	1163	} \
mbed_official	0:51ac1d130fd4	1164	try.neg = 0; \
mbed_official	0:51ac1d130fd4	1165	LCPDEBUG(LOG_INFO, ("lcp_rejci: LQR opt %d rejected\n", opt)); \
mbed_official	0:51ac1d130fd4	1166	}
mbed_official	0:51ac1d130fd4	1167	#define REJCICBCP(opt, neg, val) \
mbed_official	0:51ac1d130fd4	1168	if (go->neg && \
mbed_official	0:51ac1d130fd4	1169	len >= CILEN_CBCP && \
mbed_official	0:51ac1d130fd4	1170	p[1] == CILEN_CBCP && \
mbed_official	0:51ac1d130fd4	1171	p[0] == opt) { \
mbed_official	0:51ac1d130fd4	1172	len -= CILEN_CBCP; \
mbed_official	0:51ac1d130fd4	1173	INCPTR(2, p); \
mbed_official	0:51ac1d130fd4	1174	GETCHAR(cichar, p); \
mbed_official	0:51ac1d130fd4	1175	/* Check rejected value. */ \
mbed_official	0:51ac1d130fd4	1176	if (cichar != val) { \
mbed_official	0:51ac1d130fd4	1177	goto bad; \
mbed_official	0:51ac1d130fd4	1178	} \
mbed_official	0:51ac1d130fd4	1179	try.neg = 0; \
mbed_official	0:51ac1d130fd4	1180	LCPDEBUG(LOG_INFO, ("lcp_rejci: Callback opt %d rejected\n", opt)); \
mbed_official	0:51ac1d130fd4	1181	}
mbed_official	0:51ac1d130fd4	1182
mbed_official	0:51ac1d130fd4	1183	REJCISHORT(CI_MRU, neg_mru, go->mru);
mbed_official	0:51ac1d130fd4	1184	REJCILONG(CI_ASYNCMAP, neg_asyncmap, go->asyncmap);
mbed_official	0:51ac1d130fd4	1185	REJCICHAP(CI_AUTHTYPE, neg_chap, PPP_CHAP, go->chap_mdtype);
mbed_official	0:51ac1d130fd4	1186	if (!go->neg_chap) {
mbed_official	0:51ac1d130fd4	1187	REJCISHORT(CI_AUTHTYPE, neg_upap, PPP_PAP);
mbed_official	0:51ac1d130fd4	1188	}
mbed_official	0:51ac1d130fd4	1189	REJCILQR(CI_QUALITY, neg_lqr, go->lqr_period);
mbed_official	0:51ac1d130fd4	1190	REJCICBCP(CI_CALLBACK, neg_cbcp, CBCP_OPT);
mbed_official	0:51ac1d130fd4	1191	REJCILONG(CI_MAGICNUMBER, neg_magicnumber, go->magicnumber);
mbed_official	0:51ac1d130fd4	1192	REJCIVOID(CI_PCOMPRESSION, neg_pcompression);
mbed_official	0:51ac1d130fd4	1193	REJCIVOID(CI_ACCOMPRESSION, neg_accompression);
mbed_official	0:51ac1d130fd4	1194
mbed_official	0:51ac1d130fd4	1195	/*
mbed_official	0:51ac1d130fd4	1196	* If there are any remaining CIs, then this packet is bad.
mbed_official	0:51ac1d130fd4	1197	*/
mbed_official	0:51ac1d130fd4	1198	if (len != 0) {
mbed_official	0:51ac1d130fd4	1199	goto bad;
mbed_official	0:51ac1d130fd4	1200	}
mbed_official	0:51ac1d130fd4	1201	/*
mbed_official	0:51ac1d130fd4	1202	* Now we can update state.
mbed_official	0:51ac1d130fd4	1203	*/
mbed_official	0:51ac1d130fd4	1204	if (f->state != LS_OPENED) {
mbed_official	0:51ac1d130fd4	1205	*go = try;
mbed_official	0:51ac1d130fd4	1206	}
mbed_official	0:51ac1d130fd4	1207	return 1;
mbed_official	0:51ac1d130fd4	1208
mbed_official	0:51ac1d130fd4	1209	bad:
mbed_official	0:51ac1d130fd4	1210	LCPDEBUG(LOG_WARNING, ("lcp_rejci: received bad Reject!\n"));
mbed_official	0:51ac1d130fd4	1211	return 0;
mbed_official	0:51ac1d130fd4	1212	}
mbed_official	0:51ac1d130fd4	1213
mbed_official	0:51ac1d130fd4	1214
mbed_official	0:51ac1d130fd4	1215	/*
mbed_official	0:51ac1d130fd4	1216	* lcp_reqci - Check the peer's requested CIs and send appropriate response.
mbed_official	0:51ac1d130fd4	1217	*
mbed_official	0:51ac1d130fd4	1218	* Returns: CONFACK, CONFNAK or CONFREJ and input packet modified
mbed_official	0:51ac1d130fd4	1219	* appropriately. If reject_if_disagree is non-zero, doesn't return
mbed_official	0:51ac1d130fd4	1220	* CONFNAK; returns CONFREJ if it can't return CONFACK.
mbed_official	0:51ac1d130fd4	1221	*/
mbed_official	0:51ac1d130fd4	1222	static int
mbed_official	0:51ac1d130fd4	1223	lcp_reqci(fsm *f,
mbed_official	0:51ac1d130fd4	1224	u_char inp, / Requested CIs */
mbed_official	0:51ac1d130fd4	1225	int lenp, / Length of requested CIs */
mbed_official	0:51ac1d130fd4	1226	int reject_if_disagree)
mbed_official	0:51ac1d130fd4	1227	{
mbed_official	0:51ac1d130fd4	1228	lcp_options *go = &lcp_gotoptions[f->unit];
mbed_official	0:51ac1d130fd4	1229	lcp_options *ho = &lcp_hisoptions[f->unit];
mbed_official	0:51ac1d130fd4	1230	lcp_options *ao = &lcp_allowoptions[f->unit];
mbed_official	0:51ac1d130fd4	1231	u_char cip, next; /* Pointer to current and next CIs */
mbed_official	0:51ac1d130fd4	1232	int cilen, citype; /* Parsed len, type */
mbed_official	0:51ac1d130fd4	1233	u_char cichar; /* Parsed char value */
mbed_official	0:51ac1d130fd4	1234	u_short cishort; /* Parsed short value */
mbed_official	0:51ac1d130fd4	1235	u32_t cilong; /* Parse long value */
mbed_official	0:51ac1d130fd4	1236	int rc = CONFACK; /* Final packet return code */
mbed_official	0:51ac1d130fd4	1237	int orc; /* Individual option return code */
mbed_official	0:51ac1d130fd4	1238	u_char p; / Pointer to next char to parse */
mbed_official	0:51ac1d130fd4	1239	u_char rejp; / Pointer to next char in reject frame */
mbed_official	0:51ac1d130fd4	1240	u_char nakp; / Pointer to next char in Nak frame */
mbed_official	0:51ac1d130fd4	1241	int l = lenp; / Length left */
mbed_official	0:51ac1d130fd4	1242	#if TRACELCP > 0
mbed_official	0:51ac1d130fd4	1243	char traceBuf[80];
mbed_official	0:51ac1d130fd4	1244	size_t traceNdx = 0;
mbed_official	0:51ac1d130fd4	1245	#endif
mbed_official	0:51ac1d130fd4	1246
mbed_official	0:51ac1d130fd4	1247	/*
mbed_official	0:51ac1d130fd4	1248	* Reset all his options.
mbed_official	0:51ac1d130fd4	1249	*/
mbed_official	0:51ac1d130fd4	1250	BZERO(ho, sizeof(*ho));
mbed_official	0:51ac1d130fd4	1251
mbed_official	0:51ac1d130fd4	1252	/*
mbed_official	0:51ac1d130fd4	1253	* Process all his options.
mbed_official	0:51ac1d130fd4	1254	*/
mbed_official	0:51ac1d130fd4	1255	next = inp;
mbed_official	0:51ac1d130fd4	1256	nakp = nak_buffer;
mbed_official	0:51ac1d130fd4	1257	rejp = inp;
mbed_official	0:51ac1d130fd4	1258	while (l) {
mbed_official	0:51ac1d130fd4	1259	orc = CONFACK; /* Assume success */
mbed_official	0:51ac1d130fd4	1260	cip = p = next; /* Remember begining of CI */
mbed_official	0:51ac1d130fd4	1261	if (l < 2 \|\| /* Not enough data for CI header or */
mbed_official	0:51ac1d130fd4	1262	p[1] < 2 \|\| /* CI length too small or */
mbed_official	0:51ac1d130fd4	1263	p[1] > l) { /* CI length too big? */
mbed_official	0:51ac1d130fd4	1264	LCPDEBUG(LOG_WARNING, ("lcp_reqci: bad CI length!\n"));
mbed_official	0:51ac1d130fd4	1265	orc = CONFREJ; /* Reject bad CI */
mbed_official	0:51ac1d130fd4	1266	cilen = l; /* Reject till end of packet */
mbed_official	0:51ac1d130fd4	1267	l = 0; /* Don't loop again */
mbed_official	0:51ac1d130fd4	1268	citype = 0;
mbed_official	0:51ac1d130fd4	1269	goto endswitch;
mbed_official	0:51ac1d130fd4	1270	}
mbed_official	0:51ac1d130fd4	1271	GETCHAR(citype, p); /* Parse CI type */
mbed_official	0:51ac1d130fd4	1272	GETCHAR(cilen, p); /* Parse CI length */
mbed_official	0:51ac1d130fd4	1273	l -= cilen; /* Adjust remaining length */
mbed_official	0:51ac1d130fd4	1274	next += cilen; /* Step to next CI */
mbed_official	0:51ac1d130fd4	1275
mbed_official	0:51ac1d130fd4	1276	switch (citype) { /* Check CI type */
mbed_official	0:51ac1d130fd4	1277	case CI_MRU:
mbed_official	0:51ac1d130fd4	1278	if (!ao->neg_mru) { /* Allow option? */
mbed_official	0:51ac1d130fd4	1279	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - not allowed\n"));
mbed_official	0:51ac1d130fd4	1280	orc = CONFREJ; /* Reject CI */
mbed_official	0:51ac1d130fd4	1281	break;
mbed_official	0:51ac1d130fd4	1282	} else if (cilen != CILEN_SHORT) { /* Check CI length */
mbed_official	0:51ac1d130fd4	1283	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - bad length\n"));
mbed_official	0:51ac1d130fd4	1284	orc = CONFREJ; /* Reject CI */
mbed_official	0:51ac1d130fd4	1285	break;
mbed_official	0:51ac1d130fd4	1286	}
mbed_official	0:51ac1d130fd4	1287	GETSHORT(cishort, p); /* Parse MRU */
mbed_official	0:51ac1d130fd4	1288
mbed_official	0:51ac1d130fd4	1289	/*
mbed_official	0:51ac1d130fd4	1290	* He must be able to receive at least our minimum.
mbed_official	0:51ac1d130fd4	1291	* No need to check a maximum. If he sends a large number,
mbed_official	0:51ac1d130fd4	1292	* we'll just ignore it.
mbed_official	0:51ac1d130fd4	1293	*/
mbed_official	0:51ac1d130fd4	1294	if (cishort < PPP_MINMRU) {
mbed_official	0:51ac1d130fd4	1295	LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak - MRU too small\n"));
mbed_official	0:51ac1d130fd4	1296	orc = CONFNAK; /* Nak CI */
mbed_official	0:51ac1d130fd4	1297	PUTCHAR(CI_MRU, nakp);
mbed_official	0:51ac1d130fd4	1298	PUTCHAR(CILEN_SHORT, nakp);
mbed_official	0:51ac1d130fd4	1299	PUTSHORT(PPP_MINMRU, nakp); /* Give him a hint */
mbed_official	0:51ac1d130fd4	1300	break;
mbed_official	0:51ac1d130fd4	1301	}
mbed_official	0:51ac1d130fd4	1302	ho->neg_mru = 1; /* Remember he sent MRU */
mbed_official	0:51ac1d130fd4	1303	ho->mru = cishort; /* And remember value */
mbed_official	0:51ac1d130fd4	1304	#if TRACELCP > 0
mbed_official	0:51ac1d130fd4	1305	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MRU %d", cishort);
mbed_official	0:51ac1d130fd4	1306	traceNdx = strlen(traceBuf);
mbed_official	0:51ac1d130fd4	1307	#endif
mbed_official	0:51ac1d130fd4	1308	break;
mbed_official	0:51ac1d130fd4	1309
mbed_official	0:51ac1d130fd4	1310	case CI_ASYNCMAP:
mbed_official	0:51ac1d130fd4	1311	if (!ao->neg_asyncmap) {
mbed_official	0:51ac1d130fd4	1312	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP not allowed\n"));
mbed_official	0:51ac1d130fd4	1313	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1314	break;
mbed_official	0:51ac1d130fd4	1315	} else if (cilen != CILEN_LONG) {
mbed_official	0:51ac1d130fd4	1316	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP bad length\n"));
mbed_official	0:51ac1d130fd4	1317	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1318	break;
mbed_official	0:51ac1d130fd4	1319	}
mbed_official	0:51ac1d130fd4	1320	GETLONG(cilong, p);
mbed_official	0:51ac1d130fd4	1321
mbed_official	0:51ac1d130fd4	1322	/*
mbed_official	0:51ac1d130fd4	1323	* Asyncmap must have set at least the bits
mbed_official	0:51ac1d130fd4	1324	* which are set in lcp_allowoptions[unit].asyncmap.
mbed_official	0:51ac1d130fd4	1325	*/
mbed_official	0:51ac1d130fd4	1326	if ((ao->asyncmap & ~cilong) != 0) {
mbed_official	0:51ac1d130fd4	1327	LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak ASYNCMAP %lX missing %lX\n",
mbed_official	0:51ac1d130fd4	1328	cilong, ao->asyncmap));
mbed_official	0:51ac1d130fd4	1329	orc = CONFNAK;
mbed_official	0:51ac1d130fd4	1330	PUTCHAR(CI_ASYNCMAP, nakp);
mbed_official	0:51ac1d130fd4	1331	PUTCHAR(CILEN_LONG, nakp);
mbed_official	0:51ac1d130fd4	1332	PUTLONG(ao->asyncmap \| cilong, nakp);
mbed_official	0:51ac1d130fd4	1333	break;
mbed_official	0:51ac1d130fd4	1334	}
mbed_official	0:51ac1d130fd4	1335	ho->neg_asyncmap = 1;
mbed_official	0:51ac1d130fd4	1336	ho->asyncmap = cilong;
mbed_official	0:51ac1d130fd4	1337	#if TRACELCP > 0
mbed_official	0:51ac1d130fd4	1338	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ASYNCMAP=%lX", cilong);
mbed_official	0:51ac1d130fd4	1339	traceNdx = strlen(traceBuf);
mbed_official	0:51ac1d130fd4	1340	#endif
mbed_official	0:51ac1d130fd4	1341	break;
mbed_official	0:51ac1d130fd4	1342
mbed_official	0:51ac1d130fd4	1343	case CI_AUTHTYPE:
mbed_official	0:51ac1d130fd4	1344	if (cilen < CILEN_SHORT) {
mbed_official	0:51ac1d130fd4	1345	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE missing arg\n"));
mbed_official	0:51ac1d130fd4	1346	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1347	break;
mbed_official	0:51ac1d130fd4	1348	} else if (!(ao->neg_upap \|\| ao->neg_chap)) {
mbed_official	0:51ac1d130fd4	1349	/*
mbed_official	0:51ac1d130fd4	1350	* Reject the option if we're not willing to authenticate.
mbed_official	0:51ac1d130fd4	1351	*/
mbed_official	0:51ac1d130fd4	1352	LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE not allowed\n"));
mbed_official	0:51ac1d130fd4	1353	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1354	break;
mbed_official	0:51ac1d130fd4	1355	}
mbed_official	0:51ac1d130fd4	1356	GETSHORT(cishort, p);
mbed_official	0:51ac1d130fd4	1357
mbed_official	0:51ac1d130fd4	1358	/*
mbed_official	0:51ac1d130fd4	1359	* Authtype must be UPAP or CHAP.
mbed_official	0:51ac1d130fd4	1360	*
mbed_official	0:51ac1d130fd4	1361	* Note: if both ao->neg_upap and ao->neg_chap are set,
mbed_official	0:51ac1d130fd4	1362	* and the peer sends a Configure-Request with two
mbed_official	0:51ac1d130fd4	1363	* authenticate-protocol requests, one for CHAP and one
mbed_official	0:51ac1d130fd4	1364	* for UPAP, then we will reject the second request.
mbed_official	0:51ac1d130fd4	1365	* Whether we end up doing CHAP or UPAP depends then on
mbed_official	0:51ac1d130fd4	1366	* the ordering of the CIs in the peer's Configure-Request.
mbed_official	0:51ac1d130fd4	1367	*/
mbed_official	0:51ac1d130fd4	1368
mbed_official	0:51ac1d130fd4	1369	if (cishort == PPP_PAP) {
mbed_official	0:51ac1d130fd4	1370	if (ho->neg_chap) { /* we've already accepted CHAP */
mbed_official	0:51ac1d130fd4	1371	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP already accepted\n"));
mbed_official	0:51ac1d130fd4	1372	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1373	break;
mbed_official	0:51ac1d130fd4	1374	} else if (cilen != CILEN_SHORT) {
mbed_official	0:51ac1d130fd4	1375	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP bad len\n"));
mbed_official	0:51ac1d130fd4	1376	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1377	break;
mbed_official	0:51ac1d130fd4	1378	}
mbed_official	0:51ac1d130fd4	1379	if (!ao->neg_upap) { /* we don't want to do PAP */
mbed_official	0:51ac1d130fd4	1380	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE PAP not allowed\n"));
mbed_official	0:51ac1d130fd4	1381	orc = CONFNAK; /* NAK it and suggest CHAP */
mbed_official	0:51ac1d130fd4	1382	PUTCHAR(CI_AUTHTYPE, nakp);
mbed_official	0:51ac1d130fd4	1383	PUTCHAR(CILEN_CHAP, nakp);
mbed_official	0:51ac1d130fd4	1384	PUTSHORT(PPP_CHAP, nakp);
mbed_official	0:51ac1d130fd4	1385	PUTCHAR(ao->chap_mdtype, nakp);
mbed_official	0:51ac1d130fd4	1386	break;
mbed_official	0:51ac1d130fd4	1387	}
mbed_official	0:51ac1d130fd4	1388	ho->neg_upap = 1;
mbed_official	0:51ac1d130fd4	1389	#if TRACELCP > 0
mbed_official	0:51ac1d130fd4	1390	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PAP (%X)", cishort);
mbed_official	0:51ac1d130fd4	1391	traceNdx = strlen(traceBuf);
mbed_official	0:51ac1d130fd4	1392	#endif
mbed_official	0:51ac1d130fd4	1393	break;
mbed_official	0:51ac1d130fd4	1394	}
mbed_official	0:51ac1d130fd4	1395	if (cishort == PPP_CHAP) {
mbed_official	0:51ac1d130fd4	1396	if (ho->neg_upap) { /* we've already accepted PAP */
mbed_official	0:51ac1d130fd4	1397	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP accepted PAP\n"));
mbed_official	0:51ac1d130fd4	1398	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1399	break;
mbed_official	0:51ac1d130fd4	1400	} else if (cilen != CILEN_CHAP) {
mbed_official	0:51ac1d130fd4	1401	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP bad len\n"));
mbed_official	0:51ac1d130fd4	1402	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1403	break;
mbed_official	0:51ac1d130fd4	1404	}
mbed_official	0:51ac1d130fd4	1405	if (!ao->neg_chap) { /* we don't want to do CHAP */
mbed_official	0:51ac1d130fd4	1406	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP not allowed\n"));
mbed_official	0:51ac1d130fd4	1407	orc = CONFNAK; /* NAK it and suggest PAP */
mbed_official	0:51ac1d130fd4	1408	PUTCHAR(CI_AUTHTYPE, nakp);
mbed_official	0:51ac1d130fd4	1409	PUTCHAR(CILEN_SHORT, nakp);
mbed_official	0:51ac1d130fd4	1410	PUTSHORT(PPP_PAP, nakp);
mbed_official	0:51ac1d130fd4	1411	break;
mbed_official	0:51ac1d130fd4	1412	}
mbed_official	0:51ac1d130fd4	1413	GETCHAR(cichar, p); /* get digest type*/
mbed_official	0:51ac1d130fd4	1414	if (cichar != CHAP_DIGEST_MD5
mbed_official	0:51ac1d130fd4	1415	#if MSCHAP_SUPPORT
mbed_official	0:51ac1d130fd4	1416	&& cichar != CHAP_MICROSOFT
mbed_official	0:51ac1d130fd4	1417	#endif
mbed_official	0:51ac1d130fd4	1418	) {
mbed_official	0:51ac1d130fd4	1419	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP digest=%d\n", (int)cichar));
mbed_official	0:51ac1d130fd4	1420	orc = CONFNAK;
mbed_official	0:51ac1d130fd4	1421	PUTCHAR(CI_AUTHTYPE, nakp);
mbed_official	0:51ac1d130fd4	1422	PUTCHAR(CILEN_CHAP, nakp);
mbed_official	0:51ac1d130fd4	1423	PUTSHORT(PPP_CHAP, nakp);
mbed_official	0:51ac1d130fd4	1424	PUTCHAR(ao->chap_mdtype, nakp);
mbed_official	0:51ac1d130fd4	1425	break;
mbed_official	0:51ac1d130fd4	1426	}
mbed_official	0:51ac1d130fd4	1427	#if TRACELCP > 0
mbed_official	0:51ac1d130fd4	1428	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CHAP %X,%d", cishort, (int)cichar);
mbed_official	0:51ac1d130fd4	1429	traceNdx = strlen(traceBuf);
mbed_official	0:51ac1d130fd4	1430	#endif
mbed_official	0:51ac1d130fd4	1431	ho->chap_mdtype = cichar; /* save md type */
mbed_official	0:51ac1d130fd4	1432	ho->neg_chap = 1;
mbed_official	0:51ac1d130fd4	1433	break;
mbed_official	0:51ac1d130fd4	1434	}
mbed_official	0:51ac1d130fd4	1435
mbed_official	0:51ac1d130fd4	1436	/*
mbed_official	0:51ac1d130fd4	1437	* We don't recognize the protocol they're asking for.
mbed_official	0:51ac1d130fd4	1438	* Nak it with something we're willing to do.
mbed_official	0:51ac1d130fd4	1439	* (At this point we know ao->neg_upap \|\| ao->neg_chap.)
mbed_official	0:51ac1d130fd4	1440	*/
mbed_official	0:51ac1d130fd4	1441	orc = CONFNAK;
mbed_official	0:51ac1d130fd4	1442	PUTCHAR(CI_AUTHTYPE, nakp);
mbed_official	0:51ac1d130fd4	1443	if (ao->neg_chap) {
mbed_official	0:51ac1d130fd4	1444	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req CHAP\n", cishort));
mbed_official	0:51ac1d130fd4	1445	PUTCHAR(CILEN_CHAP, nakp);
mbed_official	0:51ac1d130fd4	1446	PUTSHORT(PPP_CHAP, nakp);
mbed_official	0:51ac1d130fd4	1447	PUTCHAR(ao->chap_mdtype, nakp);
mbed_official	0:51ac1d130fd4	1448	} else {
mbed_official	0:51ac1d130fd4	1449	LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req PAP\n", cishort));
mbed_official	0:51ac1d130fd4	1450	PUTCHAR(CILEN_SHORT, nakp);
mbed_official	0:51ac1d130fd4	1451	PUTSHORT(PPP_PAP, nakp);
mbed_official	0:51ac1d130fd4	1452	}
mbed_official	0:51ac1d130fd4	1453	break;
mbed_official	0:51ac1d130fd4	1454
mbed_official	0:51ac1d130fd4	1455	case CI_QUALITY:
mbed_official	0:51ac1d130fd4	1456	GETSHORT(cishort, p);
mbed_official	0:51ac1d130fd4	1457	GETLONG(cilong, p);
mbed_official	0:51ac1d130fd4	1458	#if TRACELCP > 0
mbed_official	0:51ac1d130fd4	1459	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " QUALITY (%x %x)", cishort, (unsigned int) cilong);
mbed_official	0:51ac1d130fd4	1460	traceNdx = strlen(traceBuf);
mbed_official	0:51ac1d130fd4	1461	#endif
mbed_official	0:51ac1d130fd4	1462
mbed_official	0:51ac1d130fd4	1463	if (!ao->neg_lqr \|\|
mbed_official	0:51ac1d130fd4	1464	cilen != CILEN_LQR) {
mbed_official	0:51ac1d130fd4	1465	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1466	break;
mbed_official	0:51ac1d130fd4	1467	}
mbed_official	0:51ac1d130fd4	1468
mbed_official	0:51ac1d130fd4	1469	/*
mbed_official	0:51ac1d130fd4	1470	* Check the protocol and the reporting period.
mbed_official	0:51ac1d130fd4	1471	* XXX When should we Nak this, and what with?
mbed_official	0:51ac1d130fd4	1472	*/
mbed_official	0:51ac1d130fd4	1473	if (cishort != PPP_LQR) {
mbed_official	0:51ac1d130fd4	1474	orc = CONFNAK;
mbed_official	0:51ac1d130fd4	1475	PUTCHAR(CI_QUALITY, nakp);
mbed_official	0:51ac1d130fd4	1476	PUTCHAR(CILEN_LQR, nakp);
mbed_official	0:51ac1d130fd4	1477	PUTSHORT(PPP_LQR, nakp);
mbed_official	0:51ac1d130fd4	1478	PUTLONG(ao->lqr_period, nakp);
mbed_official	0:51ac1d130fd4	1479	break;
mbed_official	0:51ac1d130fd4	1480	}
mbed_official	0:51ac1d130fd4	1481	break;
mbed_official	0:51ac1d130fd4	1482
mbed_official	0:51ac1d130fd4	1483	case CI_MAGICNUMBER:
mbed_official	0:51ac1d130fd4	1484	if (!(ao->neg_magicnumber \|\| go->neg_magicnumber) \|\|
mbed_official	0:51ac1d130fd4	1485	cilen != CILEN_LONG) {
mbed_official	0:51ac1d130fd4	1486	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1487	break;
mbed_official	0:51ac1d130fd4	1488	}
mbed_official	0:51ac1d130fd4	1489	GETLONG(cilong, p);
mbed_official	0:51ac1d130fd4	1490	#if TRACELCP > 0
mbed_official	0:51ac1d130fd4	1491	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MAGICNUMBER (%lX)", cilong);
mbed_official	0:51ac1d130fd4	1492	traceNdx = strlen(traceBuf);
mbed_official	0:51ac1d130fd4	1493	#endif
mbed_official	0:51ac1d130fd4	1494
mbed_official	0:51ac1d130fd4	1495	/*
mbed_official	0:51ac1d130fd4	1496	* He must have a different magic number.
mbed_official	0:51ac1d130fd4	1497	*/
mbed_official	0:51ac1d130fd4	1498	if (go->neg_magicnumber &&
mbed_official	0:51ac1d130fd4	1499	cilong == go->magicnumber) {
mbed_official	0:51ac1d130fd4	1500	cilong = magic(); /* Don't put magic() inside macro! */
mbed_official	0:51ac1d130fd4	1501	orc = CONFNAK;
mbed_official	0:51ac1d130fd4	1502	PUTCHAR(CI_MAGICNUMBER, nakp);
mbed_official	0:51ac1d130fd4	1503	PUTCHAR(CILEN_LONG, nakp);
mbed_official	0:51ac1d130fd4	1504	PUTLONG(cilong, nakp);
mbed_official	0:51ac1d130fd4	1505	break;
mbed_official	0:51ac1d130fd4	1506	}
mbed_official	0:51ac1d130fd4	1507	ho->neg_magicnumber = 1;
mbed_official	0:51ac1d130fd4	1508	ho->magicnumber = cilong;
mbed_official	0:51ac1d130fd4	1509	break;
mbed_official	0:51ac1d130fd4	1510
mbed_official	0:51ac1d130fd4	1511
mbed_official	0:51ac1d130fd4	1512	case CI_PCOMPRESSION:
mbed_official	0:51ac1d130fd4	1513	#if TRACELCP > 0
mbed_official	0:51ac1d130fd4	1514	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PCOMPRESSION");
mbed_official	0:51ac1d130fd4	1515	traceNdx = strlen(traceBuf);
mbed_official	0:51ac1d130fd4	1516	#endif
mbed_official	0:51ac1d130fd4	1517	if (!ao->neg_pcompression \|\|
mbed_official	0:51ac1d130fd4	1518	cilen != CILEN_VOID) {
mbed_official	0:51ac1d130fd4	1519	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1520	break;
mbed_official	0:51ac1d130fd4	1521	}
mbed_official	0:51ac1d130fd4	1522	ho->neg_pcompression = 1;
mbed_official	0:51ac1d130fd4	1523	break;
mbed_official	0:51ac1d130fd4	1524
mbed_official	0:51ac1d130fd4	1525	case CI_ACCOMPRESSION:
mbed_official	0:51ac1d130fd4	1526	#if TRACELCP > 0
mbed_official	0:51ac1d130fd4	1527	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ACCOMPRESSION");
mbed_official	0:51ac1d130fd4	1528	traceNdx = strlen(traceBuf);
mbed_official	0:51ac1d130fd4	1529	#endif
mbed_official	0:51ac1d130fd4	1530	if (!ao->neg_accompression \|\|
mbed_official	0:51ac1d130fd4	1531	cilen != CILEN_VOID) {
mbed_official	0:51ac1d130fd4	1532	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1533	break;
mbed_official	0:51ac1d130fd4	1534	}
mbed_official	0:51ac1d130fd4	1535	ho->neg_accompression = 1;
mbed_official	0:51ac1d130fd4	1536	break;
mbed_official	0:51ac1d130fd4	1537
mbed_official	0:51ac1d130fd4	1538	case CI_MRRU:
mbed_official	0:51ac1d130fd4	1539	#if TRACELCP > 0
mbed_official	0:51ac1d130fd4	1540	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_MRRU");
mbed_official	0:51ac1d130fd4	1541	traceNdx = strlen(traceBuf);
mbed_official	0:51ac1d130fd4	1542	#endif
mbed_official	0:51ac1d130fd4	1543	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1544	break;
mbed_official	0:51ac1d130fd4	1545
mbed_official	0:51ac1d130fd4	1546	case CI_SSNHF:
mbed_official	0:51ac1d130fd4	1547	#if TRACELCP > 0
mbed_official	0:51ac1d130fd4	1548	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_SSNHF");
mbed_official	0:51ac1d130fd4	1549	traceNdx = strlen(traceBuf);
mbed_official	0:51ac1d130fd4	1550	#endif
mbed_official	0:51ac1d130fd4	1551	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1552	break;
mbed_official	0:51ac1d130fd4	1553
mbed_official	0:51ac1d130fd4	1554	case CI_EPDISC:
mbed_official	0:51ac1d130fd4	1555	#if TRACELCP > 0
mbed_official	0:51ac1d130fd4	1556	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_EPDISC");
mbed_official	0:51ac1d130fd4	1557	traceNdx = strlen(traceBuf);
mbed_official	0:51ac1d130fd4	1558	#endif
mbed_official	0:51ac1d130fd4	1559	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1560	break;
mbed_official	0:51ac1d130fd4	1561
mbed_official	0:51ac1d130fd4	1562	default:
mbed_official	0:51ac1d130fd4	1563	#if TRACELCP
mbed_official	0:51ac1d130fd4	1564	snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " unknown %d", citype);
mbed_official	0:51ac1d130fd4	1565	traceNdx = strlen(traceBuf);
mbed_official	0:51ac1d130fd4	1566	#endif
mbed_official	0:51ac1d130fd4	1567	orc = CONFREJ;
mbed_official	0:51ac1d130fd4	1568	break;
mbed_official	0:51ac1d130fd4	1569	}
mbed_official	0:51ac1d130fd4	1570
mbed_official	0:51ac1d130fd4	1571	endswitch:
mbed_official	0:51ac1d130fd4	1572	#if TRACELCP
mbed_official	0:51ac1d130fd4	1573	if (traceNdx >= 80 - 32) {
mbed_official	0:51ac1d130fd4	1574	LCPDEBUG(LOG_INFO, ("lcp_reqci: rcvd%s\n", traceBuf));
mbed_official	0:51ac1d130fd4	1575	traceNdx = 0;
mbed_official	0:51ac1d130fd4	1576	}
mbed_official	0:51ac1d130fd4	1577	#endif
mbed_official	0:51ac1d130fd4	1578	if (orc == CONFACK && /* Good CI */
mbed_official	0:51ac1d130fd4	1579	rc != CONFACK) { /* but prior CI wasnt? */
mbed_official	0:51ac1d130fd4	1580	continue; /* Don't send this one */
mbed_official	0:51ac1d130fd4	1581	}
mbed_official	0:51ac1d130fd4	1582
mbed_official	0:51ac1d130fd4	1583	if (orc == CONFNAK) { /* Nak this CI? */
mbed_official	0:51ac1d130fd4	1584	if (reject_if_disagree /* Getting fed up with sending NAKs? */
mbed_official	0:51ac1d130fd4	1585	&& citype != CI_MAGICNUMBER) {
mbed_official	0:51ac1d130fd4	1586	orc = CONFREJ; /* Get tough if so */
mbed_official	0:51ac1d130fd4	1587	} else {
mbed_official	0:51ac1d130fd4	1588	if (rc == CONFREJ) { /* Rejecting prior CI? */
mbed_official	0:51ac1d130fd4	1589	continue; /* Don't send this one */
mbed_official	0:51ac1d130fd4	1590	}
mbed_official	0:51ac1d130fd4	1591	rc = CONFNAK;
mbed_official	0:51ac1d130fd4	1592	}
mbed_official	0:51ac1d130fd4	1593	}
mbed_official	0:51ac1d130fd4	1594	if (orc == CONFREJ) { /* Reject this CI */
mbed_official	0:51ac1d130fd4	1595	rc = CONFREJ;
mbed_official	0:51ac1d130fd4	1596	if (cip != rejp) { /* Need to move rejected CI? */
mbed_official	0:51ac1d130fd4	1597	BCOPY(cip, rejp, cilen); /* Move it */
mbed_official	0:51ac1d130fd4	1598	}
mbed_official	0:51ac1d130fd4	1599	INCPTR(cilen, rejp); /* Update output pointer */
mbed_official	0:51ac1d130fd4	1600	}
mbed_official	0:51ac1d130fd4	1601	}
mbed_official	0:51ac1d130fd4	1602
mbed_official	0:51ac1d130fd4	1603	/*
mbed_official	0:51ac1d130fd4	1604	* If we wanted to send additional NAKs (for unsent CIs), the
mbed_official	0:51ac1d130fd4	1605	* code would go here. The extra NAKs would go at *nakp.
mbed_official	0:51ac1d130fd4	1606	* At present there are no cases where we want to ask the
mbed_official	0:51ac1d130fd4	1607	* peer to negotiate an option.
mbed_official	0:51ac1d130fd4	1608	*/
mbed_official	0:51ac1d130fd4	1609
mbed_official	0:51ac1d130fd4	1610	switch (rc) {
mbed_official	0:51ac1d130fd4	1611	case CONFACK:
mbed_official	0:51ac1d130fd4	1612	*lenp = (int)(next - inp);
mbed_official	0:51ac1d130fd4	1613	break;
mbed_official	0:51ac1d130fd4	1614	case CONFNAK:
mbed_official	0:51ac1d130fd4	1615	/*
mbed_official	0:51ac1d130fd4	1616	* Copy the Nak'd options from the nak_buffer to the caller's buffer.
mbed_official	0:51ac1d130fd4	1617	*/
mbed_official	0:51ac1d130fd4	1618	*lenp = (int)(nakp - nak_buffer);
mbed_official	0:51ac1d130fd4	1619	BCOPY(nak_buffer, inp, *lenp);
mbed_official	0:51ac1d130fd4	1620	break;
mbed_official	0:51ac1d130fd4	1621	case CONFREJ:
mbed_official	0:51ac1d130fd4	1622	*lenp = (int)(rejp - inp);
mbed_official	0:51ac1d130fd4	1623	break;
mbed_official	0:51ac1d130fd4	1624	}
mbed_official	0:51ac1d130fd4	1625
mbed_official	0:51ac1d130fd4	1626	#if TRACELCP > 0
mbed_official	0:51ac1d130fd4	1627	if (traceNdx > 0) {
mbed_official	0:51ac1d130fd4	1628	LCPDEBUG(LOG_INFO, ("lcp_reqci: %s\n", traceBuf));
mbed_official	0:51ac1d130fd4	1629	}
mbed_official	0:51ac1d130fd4	1630	#endif
mbed_official	0:51ac1d130fd4	1631	LCPDEBUG(LOG_INFO, ("lcp_reqci: returning CONF%s.\n", CODENAME(rc)));
mbed_official	0:51ac1d130fd4	1632	return (rc); /* Return final code */
mbed_official	0:51ac1d130fd4	1633	}
mbed_official	0:51ac1d130fd4	1634
mbed_official	0:51ac1d130fd4	1635
mbed_official	0:51ac1d130fd4	1636	/*
mbed_official	0:51ac1d130fd4	1637	* lcp_up - LCP has come UP.
mbed_official	0:51ac1d130fd4	1638	*/
mbed_official	0:51ac1d130fd4	1639	static void
mbed_official	0:51ac1d130fd4	1640	lcp_up(fsm *f)
mbed_official	0:51ac1d130fd4	1641	{
mbed_official	0:51ac1d130fd4	1642	lcp_options *wo = &lcp_wantoptions[f->unit];
mbed_official	0:51ac1d130fd4	1643	lcp_options *ho = &lcp_hisoptions[f->unit];
mbed_official	0:51ac1d130fd4	1644	lcp_options *go = &lcp_gotoptions[f->unit];
mbed_official	0:51ac1d130fd4	1645	lcp_options *ao = &lcp_allowoptions[f->unit];
mbed_official	0:51ac1d130fd4	1646
mbed_official	0:51ac1d130fd4	1647	if (!go->neg_magicnumber) {
mbed_official	0:51ac1d130fd4	1648	go->magicnumber = 0;
mbed_official	0:51ac1d130fd4	1649	}
mbed_official	0:51ac1d130fd4	1650	if (!ho->neg_magicnumber) {
mbed_official	0:51ac1d130fd4	1651	ho->magicnumber = 0;
mbed_official	0:51ac1d130fd4	1652	}
mbed_official	0:51ac1d130fd4	1653
mbed_official	0:51ac1d130fd4	1654	/*
mbed_official	0:51ac1d130fd4	1655	* Set our MTU to the smaller of the MTU we wanted and
mbed_official	0:51ac1d130fd4	1656	* the MRU our peer wanted. If we negotiated an MRU,
mbed_official	0:51ac1d130fd4	1657	* set our MRU to the larger of value we wanted and
mbed_official	0:51ac1d130fd4	1658	* the value we got in the negotiation.
mbed_official	0:51ac1d130fd4	1659	*/
mbed_official	0:51ac1d130fd4	1660	ppp_send_config(f->unit, LWIP_MIN(ao->mru, (ho->neg_mru? ho->mru: PPP_MRU)),
mbed_official	0:51ac1d130fd4	1661	(ho->neg_asyncmap? ho->asyncmap: 0xffffffffl),
mbed_official	0:51ac1d130fd4	1662	ho->neg_pcompression, ho->neg_accompression);
mbed_official	0:51ac1d130fd4	1663	/*
mbed_official	0:51ac1d130fd4	1664	* If the asyncmap hasn't been negotiated, we really should
mbed_official	0:51ac1d130fd4	1665	* set the receive asyncmap to ffffffff, but we set it to 0
mbed_official	0:51ac1d130fd4	1666	* for backwards contemptibility.
mbed_official	0:51ac1d130fd4	1667	*/
mbed_official	0:51ac1d130fd4	1668	ppp_recv_config(f->unit, (go->neg_mru? LWIP_MAX(wo->mru, go->mru): PPP_MRU),
mbed_official	0:51ac1d130fd4	1669	(go->neg_asyncmap? go->asyncmap: 0x00000000),
mbed_official	0:51ac1d130fd4	1670	go->neg_pcompression, go->neg_accompression);
mbed_official	0:51ac1d130fd4	1671
mbed_official	0:51ac1d130fd4	1672	if (ho->neg_mru) {
mbed_official	0:51ac1d130fd4	1673	peer_mru[f->unit] = ho->mru;
mbed_official	0:51ac1d130fd4	1674	}
mbed_official	0:51ac1d130fd4	1675
mbed_official	0:51ac1d130fd4	1676	lcp_echo_lowerup(f->unit); /* Enable echo messages */
mbed_official	0:51ac1d130fd4	1677
mbed_official	0:51ac1d130fd4	1678	link_established(f->unit); /* The link is up; authenticate now */
mbed_official	0:51ac1d130fd4	1679	}
mbed_official	0:51ac1d130fd4	1680
mbed_official	0:51ac1d130fd4	1681
mbed_official	0:51ac1d130fd4	1682	/*
mbed_official	0:51ac1d130fd4	1683	* lcp_down - LCP has gone DOWN.
mbed_official	0:51ac1d130fd4	1684	*
mbed_official	0:51ac1d130fd4	1685	* Alert other protocols.
mbed_official	0:51ac1d130fd4	1686	*/
mbed_official	0:51ac1d130fd4	1687	static void
mbed_official	0:51ac1d130fd4	1688	lcp_down(fsm *f)
mbed_official	0:51ac1d130fd4	1689	{
mbed_official	0:51ac1d130fd4	1690	lcp_options *go = &lcp_gotoptions[f->unit];
mbed_official	0:51ac1d130fd4	1691
mbed_official	0:51ac1d130fd4	1692	lcp_echo_lowerdown(f->unit);
mbed_official	0:51ac1d130fd4	1693
mbed_official	0:51ac1d130fd4	1694	link_down(f->unit);
mbed_official	0:51ac1d130fd4	1695
mbed_official	0:51ac1d130fd4	1696	ppp_send_config(f->unit, PPP_MRU, 0xffffffffl, 0, 0);
mbed_official	0:51ac1d130fd4	1697	ppp_recv_config(f->unit, PPP_MRU,
mbed_official	0:51ac1d130fd4	1698	(go->neg_asyncmap? go->asyncmap: 0x00000000),
mbed_official	0:51ac1d130fd4	1699	go->neg_pcompression, go->neg_accompression);
mbed_official	0:51ac1d130fd4	1700	peer_mru[f->unit] = PPP_MRU;
mbed_official	0:51ac1d130fd4	1701	}
mbed_official	0:51ac1d130fd4	1702
mbed_official	0:51ac1d130fd4	1703
mbed_official	0:51ac1d130fd4	1704	/*
mbed_official	0:51ac1d130fd4	1705	* lcp_starting - LCP needs the lower layer up.
mbed_official	0:51ac1d130fd4	1706	*/
mbed_official	0:51ac1d130fd4	1707	static void
mbed_official	0:51ac1d130fd4	1708	lcp_starting(fsm *f)
mbed_official	0:51ac1d130fd4	1709	{
mbed_official	0:51ac1d130fd4	1710	link_required(f->unit); /* lwip: currently does nothing */
mbed_official	0:51ac1d130fd4	1711	}
mbed_official	0:51ac1d130fd4	1712
mbed_official	0:51ac1d130fd4	1713
mbed_official	0:51ac1d130fd4	1714	/*
mbed_official	0:51ac1d130fd4	1715	* lcp_finished - LCP has finished with the lower layer.
mbed_official	0:51ac1d130fd4	1716	*/
mbed_official	0:51ac1d130fd4	1717	static void
mbed_official	0:51ac1d130fd4	1718	lcp_finished(fsm *f)
mbed_official	0:51ac1d130fd4	1719	{
mbed_official	0:51ac1d130fd4	1720	link_terminated(f->unit); /* we are finished with the link */
mbed_official	0:51ac1d130fd4	1721	}
mbed_official	0:51ac1d130fd4	1722
mbed_official	0:51ac1d130fd4	1723
mbed_official	0:51ac1d130fd4	1724	#if PPP_ADDITIONAL_CALLBACKS
mbed_official	0:51ac1d130fd4	1725	/*
mbed_official	0:51ac1d130fd4	1726	* print_string - print a readable representation of a string using
mbed_official	0:51ac1d130fd4	1727	* printer.
mbed_official	0:51ac1d130fd4	1728	*/
mbed_official	0:51ac1d130fd4	1729	static void
mbed_official	0:51ac1d130fd4	1730	print_string( char p, int len, void (printer) (void , char , ...), void *arg)
mbed_official	0:51ac1d130fd4	1731	{
mbed_official	0:51ac1d130fd4	1732	int c;
mbed_official	0:51ac1d130fd4	1733
mbed_official	0:51ac1d130fd4	1734	printer(arg, "\"");
mbed_official	0:51ac1d130fd4	1735	for (; len > 0; --len) {
mbed_official	0:51ac1d130fd4	1736	c = *p++;
mbed_official	0:51ac1d130fd4	1737	if (' ' <= c && c <= '~') {
mbed_official	0:51ac1d130fd4	1738	if (c == '\\' \|\| c == '"') {
mbed_official	0:51ac1d130fd4	1739	printer(arg, "\\");
mbed_official	0:51ac1d130fd4	1740	}
mbed_official	0:51ac1d130fd4	1741	printer(arg, "%c", c);
mbed_official	0:51ac1d130fd4	1742	} else {
mbed_official	0:51ac1d130fd4	1743	switch (c) {
mbed_official	0:51ac1d130fd4	1744	case '\n':
mbed_official	0:51ac1d130fd4	1745	printer(arg, "\\n");
mbed_official	0:51ac1d130fd4	1746	break;
mbed_official	0:51ac1d130fd4	1747	case '\r':
mbed_official	0:51ac1d130fd4	1748	printer(arg, "\\r");
mbed_official	0:51ac1d130fd4	1749	break;
mbed_official	0:51ac1d130fd4	1750	case '\t':
mbed_official	0:51ac1d130fd4	1751	printer(arg, "\\t");
mbed_official	0:51ac1d130fd4	1752	break;
mbed_official	0:51ac1d130fd4	1753	default:
mbed_official	0:51ac1d130fd4	1754	printer(arg, "\\%.3o", c);
mbed_official	0:51ac1d130fd4	1755	}
mbed_official	0:51ac1d130fd4	1756	}
mbed_official	0:51ac1d130fd4	1757	}
mbed_official	0:51ac1d130fd4	1758	printer(arg, "\"");
mbed_official	0:51ac1d130fd4	1759	}
mbed_official	0:51ac1d130fd4	1760
mbed_official	0:51ac1d130fd4	1761
mbed_official	0:51ac1d130fd4	1762	/*
mbed_official	0:51ac1d130fd4	1763	* lcp_printpkt - print the contents of an LCP packet.
mbed_official	0:51ac1d130fd4	1764	*/
mbed_official	0:51ac1d130fd4	1765	static char *lcp_codenames[] = {
mbed_official	0:51ac1d130fd4	1766	"ConfReq", "ConfAck", "ConfNak", "ConfRej",
mbed_official	0:51ac1d130fd4	1767	"TermReq", "TermAck", "CodeRej", "ProtRej",
mbed_official	0:51ac1d130fd4	1768	"EchoReq", "EchoRep", "DiscReq"
mbed_official	0:51ac1d130fd4	1769	};
mbed_official	0:51ac1d130fd4	1770
mbed_official	0:51ac1d130fd4	1771	static int
mbed_official	0:51ac1d130fd4	1772	lcp_printpkt( u_char p, int plen, void (printer) (void , char , ...), void *arg)
mbed_official	0:51ac1d130fd4	1773	{
mbed_official	0:51ac1d130fd4	1774	int code, id, len, olen;
mbed_official	0:51ac1d130fd4	1775	u_char pstart, optend;
mbed_official	0:51ac1d130fd4	1776	u_short cishort;
mbed_official	0:51ac1d130fd4	1777	u32_t cilong;
mbed_official	0:51ac1d130fd4	1778
mbed_official	0:51ac1d130fd4	1779	if (plen < HEADERLEN) {
mbed_official	0:51ac1d130fd4	1780	return 0;
mbed_official	0:51ac1d130fd4	1781	}
mbed_official	0:51ac1d130fd4	1782	pstart = p;
mbed_official	0:51ac1d130fd4	1783	GETCHAR(code, p);
mbed_official	0:51ac1d130fd4	1784	GETCHAR(id, p);
mbed_official	0:51ac1d130fd4	1785	GETSHORT(len, p);
mbed_official	0:51ac1d130fd4	1786	if (len < HEADERLEN \|\| len > plen) {
mbed_official	0:51ac1d130fd4	1787	return 0;
mbed_official	0:51ac1d130fd4	1788	}
mbed_official	0:51ac1d130fd4	1789
mbed_official	0:51ac1d130fd4	1790	if (code >= 1 && code <= sizeof(lcp_codenames) / sizeof(char *)) {
mbed_official	0:51ac1d130fd4	1791	printer(arg, " %s", lcp_codenames[code-1]);
mbed_official	0:51ac1d130fd4	1792	} else {
mbed_official	0:51ac1d130fd4	1793	printer(arg, " code=0x%x", code);
mbed_official	0:51ac1d130fd4	1794	}
mbed_official	0:51ac1d130fd4	1795	printer(arg, " id=0x%x", id);
mbed_official	0:51ac1d130fd4	1796	len -= HEADERLEN;
mbed_official	0:51ac1d130fd4	1797	switch (code) {
mbed_official	0:51ac1d130fd4	1798	case CONFREQ:
mbed_official	0:51ac1d130fd4	1799	case CONFACK:
mbed_official	0:51ac1d130fd4	1800	case CONFNAK:
mbed_official	0:51ac1d130fd4	1801	case CONFREJ:
mbed_official	0:51ac1d130fd4	1802	/* print option list */
mbed_official	0:51ac1d130fd4	1803	while (len >= 2) {
mbed_official	0:51ac1d130fd4	1804	GETCHAR(code, p);
mbed_official	0:51ac1d130fd4	1805	GETCHAR(olen, p);
mbed_official	0:51ac1d130fd4	1806	p -= 2;
mbed_official	0:51ac1d130fd4	1807	if (olen < 2 \|\| olen > len) {
mbed_official	0:51ac1d130fd4	1808	break;
mbed_official	0:51ac1d130fd4	1809	}
mbed_official	0:51ac1d130fd4	1810	printer(arg, " <");
mbed_official	0:51ac1d130fd4	1811	len -= olen;
mbed_official	0:51ac1d130fd4	1812	optend = p + olen;
mbed_official	0:51ac1d130fd4	1813	switch (code) {
mbed_official	0:51ac1d130fd4	1814	case CI_MRU:
mbed_official	0:51ac1d130fd4	1815	if (olen == CILEN_SHORT) {
mbed_official	0:51ac1d130fd4	1816	p += 2;
mbed_official	0:51ac1d130fd4	1817	GETSHORT(cishort, p);
mbed_official	0:51ac1d130fd4	1818	printer(arg, "mru %d", cishort);
mbed_official	0:51ac1d130fd4	1819	}
mbed_official	0:51ac1d130fd4	1820	break;
mbed_official	0:51ac1d130fd4	1821	case CI_ASYNCMAP:
mbed_official	0:51ac1d130fd4	1822	if (olen == CILEN_LONG) {
mbed_official	0:51ac1d130fd4	1823	p += 2;
mbed_official	0:51ac1d130fd4	1824	GETLONG(cilong, p);
mbed_official	0:51ac1d130fd4	1825	printer(arg, "asyncmap 0x%lx", cilong);
mbed_official	0:51ac1d130fd4	1826	}
mbed_official	0:51ac1d130fd4	1827	break;
mbed_official	0:51ac1d130fd4	1828	case CI_AUTHTYPE:
mbed_official	0:51ac1d130fd4	1829	if (olen >= CILEN_SHORT) {
mbed_official	0:51ac1d130fd4	1830	p += 2;
mbed_official	0:51ac1d130fd4	1831	printer(arg, "auth ");
mbed_official	0:51ac1d130fd4	1832	GETSHORT(cishort, p);
mbed_official	0:51ac1d130fd4	1833	switch (cishort) {
mbed_official	0:51ac1d130fd4	1834	case PPP_PAP:
mbed_official	0:51ac1d130fd4	1835	printer(arg, "pap");
mbed_official	0:51ac1d130fd4	1836	break;
mbed_official	0:51ac1d130fd4	1837	case PPP_CHAP:
mbed_official	0:51ac1d130fd4	1838	printer(arg, "chap");
mbed_official	0:51ac1d130fd4	1839	break;
mbed_official	0:51ac1d130fd4	1840	default:
mbed_official	0:51ac1d130fd4	1841	printer(arg, "0x%x", cishort);
mbed_official	0:51ac1d130fd4	1842	}
mbed_official	0:51ac1d130fd4	1843	}
mbed_official	0:51ac1d130fd4	1844	break;
mbed_official	0:51ac1d130fd4	1845	case CI_QUALITY:
mbed_official	0:51ac1d130fd4	1846	if (olen >= CILEN_SHORT) {
mbed_official	0:51ac1d130fd4	1847	p += 2;
mbed_official	0:51ac1d130fd4	1848	printer(arg, "quality ");
mbed_official	0:51ac1d130fd4	1849	GETSHORT(cishort, p);
mbed_official	0:51ac1d130fd4	1850	switch (cishort) {
mbed_official	0:51ac1d130fd4	1851	case PPP_LQR:
mbed_official	0:51ac1d130fd4	1852	printer(arg, "lqr");
mbed_official	0:51ac1d130fd4	1853	break;
mbed_official	0:51ac1d130fd4	1854	default:
mbed_official	0:51ac1d130fd4	1855	printer(arg, "0x%x", cishort);
mbed_official	0:51ac1d130fd4	1856	}
mbed_official	0:51ac1d130fd4	1857	}
mbed_official	0:51ac1d130fd4	1858	break;
mbed_official	0:51ac1d130fd4	1859	case CI_CALLBACK:
mbed_official	0:51ac1d130fd4	1860	if (olen >= CILEN_CHAR) {
mbed_official	0:51ac1d130fd4	1861	p += 2;
mbed_official	0:51ac1d130fd4	1862	printer(arg, "callback ");
mbed_official	0:51ac1d130fd4	1863	GETSHORT(cishort, p);
mbed_official	0:51ac1d130fd4	1864	switch (cishort) {
mbed_official	0:51ac1d130fd4	1865	case CBCP_OPT:
mbed_official	0:51ac1d130fd4	1866	printer(arg, "CBCP");
mbed_official	0:51ac1d130fd4	1867	break;
mbed_official	0:51ac1d130fd4	1868	default:
mbed_official	0:51ac1d130fd4	1869	printer(arg, "0x%x", cishort);
mbed_official	0:51ac1d130fd4	1870	}
mbed_official	0:51ac1d130fd4	1871	}
mbed_official	0:51ac1d130fd4	1872	break;
mbed_official	0:51ac1d130fd4	1873	case CI_MAGICNUMBER:
mbed_official	0:51ac1d130fd4	1874	if (olen == CILEN_LONG) {
mbed_official	0:51ac1d130fd4	1875	p += 2;
mbed_official	0:51ac1d130fd4	1876	GETLONG(cilong, p);
mbed_official	0:51ac1d130fd4	1877	printer(arg, "magic 0x%x", cilong);
mbed_official	0:51ac1d130fd4	1878	}
mbed_official	0:51ac1d130fd4	1879	break;
mbed_official	0:51ac1d130fd4	1880	case CI_PCOMPRESSION:
mbed_official	0:51ac1d130fd4	1881	if (olen == CILEN_VOID) {
mbed_official	0:51ac1d130fd4	1882	p += 2;
mbed_official	0:51ac1d130fd4	1883	printer(arg, "pcomp");
mbed_official	0:51ac1d130fd4	1884	}
mbed_official	0:51ac1d130fd4	1885	break;
mbed_official	0:51ac1d130fd4	1886	case CI_ACCOMPRESSION:
mbed_official	0:51ac1d130fd4	1887	if (olen == CILEN_VOID) {
mbed_official	0:51ac1d130fd4	1888	p += 2;
mbed_official	0:51ac1d130fd4	1889	printer(arg, "accomp");
mbed_official	0:51ac1d130fd4	1890	}
mbed_official	0:51ac1d130fd4	1891	break;
mbed_official	0:51ac1d130fd4	1892	}
mbed_official	0:51ac1d130fd4	1893	while (p < optend) {
mbed_official	0:51ac1d130fd4	1894	GETCHAR(code, p);
mbed_official	0:51ac1d130fd4	1895	printer(arg, " %.2x", code);
mbed_official	0:51ac1d130fd4	1896	}
mbed_official	0:51ac1d130fd4	1897	printer(arg, ">");
mbed_official	0:51ac1d130fd4	1898	}
mbed_official	0:51ac1d130fd4	1899	break;
mbed_official	0:51ac1d130fd4	1900
mbed_official	0:51ac1d130fd4	1901	case TERMACK:
mbed_official	0:51ac1d130fd4	1902	case TERMREQ:
mbed_official	0:51ac1d130fd4	1903	if (len > 0 && p >= ' ' && p < 0x7f) {
mbed_official	0:51ac1d130fd4	1904	printer(arg, " ");
mbed_official	0:51ac1d130fd4	1905	print_string((char*)p, len, printer, arg);
mbed_official	0:51ac1d130fd4	1906	p += len;
mbed_official	0:51ac1d130fd4	1907	len = 0;
mbed_official	0:51ac1d130fd4	1908	}
mbed_official	0:51ac1d130fd4	1909	break;
mbed_official	0:51ac1d130fd4	1910
mbed_official	0:51ac1d130fd4	1911	case ECHOREQ:
mbed_official	0:51ac1d130fd4	1912	case ECHOREP:
mbed_official	0:51ac1d130fd4	1913	case DISCREQ:
mbed_official	0:51ac1d130fd4	1914	if (len >= 4) {
mbed_official	0:51ac1d130fd4	1915	GETLONG(cilong, p);
mbed_official	0:51ac1d130fd4	1916	printer(arg, " magic=0x%x", cilong);
mbed_official	0:51ac1d130fd4	1917	p += 4;
mbed_official	0:51ac1d130fd4	1918	len -= 4;
mbed_official	0:51ac1d130fd4	1919	}
mbed_official	0:51ac1d130fd4	1920	break;
mbed_official	0:51ac1d130fd4	1921	}
mbed_official	0:51ac1d130fd4	1922
mbed_official	0:51ac1d130fd4	1923	/* print the rest of the bytes in the packet */
mbed_official	0:51ac1d130fd4	1924	for (; len > 0; --len) {
mbed_official	0:51ac1d130fd4	1925	GETCHAR(code, p);
mbed_official	0:51ac1d130fd4	1926	printer(arg, " %.2x", code);
mbed_official	0:51ac1d130fd4	1927	}
mbed_official	0:51ac1d130fd4	1928
mbed_official	0:51ac1d130fd4	1929	return (int)(p - pstart);
mbed_official	0:51ac1d130fd4	1930	}
mbed_official	0:51ac1d130fd4	1931	#endif /* PPP_ADDITIONAL_CALLBACKS */
mbed_official	0:51ac1d130fd4	1932
mbed_official	0:51ac1d130fd4	1933	/*
mbed_official	0:51ac1d130fd4	1934	* Time to shut down the link because there is nothing out there.
mbed_official	0:51ac1d130fd4	1935	*/
mbed_official	0:51ac1d130fd4	1936	static void
mbed_official	0:51ac1d130fd4	1937	LcpLinkFailure (fsm *f)
mbed_official	0:51ac1d130fd4	1938	{
mbed_official	0:51ac1d130fd4	1939	if (f->state == LS_OPENED) {
mbed_official	0:51ac1d130fd4	1940	LCPDEBUG(LOG_INFO, ("No response to %d echo-requests\n", lcp_echos_pending));
mbed_official	0:51ac1d130fd4	1941	LCPDEBUG(LOG_NOTICE, ("Serial link appears to be disconnected.\n"));
mbed_official	0:51ac1d130fd4	1942	lcp_close(f->unit, "Peer not responding");
mbed_official	0:51ac1d130fd4	1943	}
mbed_official	0:51ac1d130fd4	1944	}
mbed_official	0:51ac1d130fd4	1945
mbed_official	0:51ac1d130fd4	1946	/*
mbed_official	0:51ac1d130fd4	1947	* Timer expired for the LCP echo requests from this process.
mbed_official	0:51ac1d130fd4	1948	*/
mbed_official	0:51ac1d130fd4	1949	static void
mbed_official	0:51ac1d130fd4	1950	LcpEchoCheck (fsm *f)
mbed_official	0:51ac1d130fd4	1951	{
mbed_official	0:51ac1d130fd4	1952	LcpSendEchoRequest (f);
mbed_official	0:51ac1d130fd4	1953
mbed_official	0:51ac1d130fd4	1954	/*
mbed_official	0:51ac1d130fd4	1955	* Start the timer for the next interval.
mbed_official	0:51ac1d130fd4	1956	*/
mbed_official	0:51ac1d130fd4	1957	LWIP_ASSERT("lcp_echo_timer_running == 0", lcp_echo_timer_running == 0);
mbed_official	0:51ac1d130fd4	1958
mbed_official	0:51ac1d130fd4	1959	TIMEOUT (LcpEchoTimeout, f, lcp_echo_interval);
mbed_official	0:51ac1d130fd4	1960	lcp_echo_timer_running = 1;
mbed_official	0:51ac1d130fd4	1961	}
mbed_official	0:51ac1d130fd4	1962
mbed_official	0:51ac1d130fd4	1963	/*
mbed_official	0:51ac1d130fd4	1964	* LcpEchoTimeout - Timer expired on the LCP echo
mbed_official	0:51ac1d130fd4	1965	*/
mbed_official	0:51ac1d130fd4	1966	static void
mbed_official	0:51ac1d130fd4	1967	LcpEchoTimeout (void *arg)
mbed_official	0:51ac1d130fd4	1968	{
mbed_official	0:51ac1d130fd4	1969	if (lcp_echo_timer_running != 0) {
mbed_official	0:51ac1d130fd4	1970	lcp_echo_timer_running = 0;
mbed_official	0:51ac1d130fd4	1971	LcpEchoCheck ((fsm *) arg);
mbed_official	0:51ac1d130fd4	1972	}
mbed_official	0:51ac1d130fd4	1973	}
mbed_official	0:51ac1d130fd4	1974
mbed_official	0:51ac1d130fd4	1975	/*
mbed_official	0:51ac1d130fd4	1976	* LcpEchoReply - LCP has received a reply to the echo
mbed_official	0:51ac1d130fd4	1977	*/
mbed_official	0:51ac1d130fd4	1978	static void
mbed_official	0:51ac1d130fd4	1979	lcp_received_echo_reply (fsm f, int id, u_char inp, int len)
mbed_official	0:51ac1d130fd4	1980	{
mbed_official	0:51ac1d130fd4	1981	u32_t magic;
mbed_official	0:51ac1d130fd4	1982
mbed_official	0:51ac1d130fd4	1983	LWIP_UNUSED_ARG(id);
mbed_official	0:51ac1d130fd4	1984
mbed_official	0:51ac1d130fd4	1985	/* Check the magic number - don't count replies from ourselves. */
mbed_official	0:51ac1d130fd4	1986	if (len < 4) {
mbed_official	0:51ac1d130fd4	1987	LCPDEBUG(LOG_WARNING, ("lcp: received short Echo-Reply, length %d\n", len));
mbed_official	0:51ac1d130fd4	1988	return;
mbed_official	0:51ac1d130fd4	1989	}
mbed_official	0:51ac1d130fd4	1990	GETLONG(magic, inp);
mbed_official	0:51ac1d130fd4	1991	if (lcp_gotoptions[f->unit].neg_magicnumber && magic == lcp_gotoptions[f->unit].magicnumber) {
mbed_official	0:51ac1d130fd4	1992	LCPDEBUG(LOG_WARNING, ("appear to have received our own echo-reply!\n"));
mbed_official	0:51ac1d130fd4	1993	return;
mbed_official	0:51ac1d130fd4	1994	}
mbed_official	0:51ac1d130fd4	1995
mbed_official	0:51ac1d130fd4	1996	/* Reset the number of outstanding echo frames */
mbed_official	0:51ac1d130fd4	1997	lcp_echos_pending = 0;
mbed_official	0:51ac1d130fd4	1998	}
mbed_official	0:51ac1d130fd4	1999
mbed_official	0:51ac1d130fd4	2000	/*
mbed_official	0:51ac1d130fd4	2001	* LcpSendEchoRequest - Send an echo request frame to the peer
mbed_official	0:51ac1d130fd4	2002	*/
mbed_official	0:51ac1d130fd4	2003	static void
mbed_official	0:51ac1d130fd4	2004	LcpSendEchoRequest (fsm *f)
mbed_official	0:51ac1d130fd4	2005	{
mbed_official	0:51ac1d130fd4	2006	u32_t lcp_magic;
mbed_official	0:51ac1d130fd4	2007	u_char pkt[4], *pktp;
mbed_official	0:51ac1d130fd4	2008
mbed_official	0:51ac1d130fd4	2009	/*
mbed_official	0:51ac1d130fd4	2010	* Detect the failure of the peer at this point.
mbed_official	0:51ac1d130fd4	2011	*/
mbed_official	0:51ac1d130fd4	2012	if (lcp_echo_fails != 0) {
mbed_official	0:51ac1d130fd4	2013	if (lcp_echos_pending >= lcp_echo_fails) {
mbed_official	0:51ac1d130fd4	2014	LcpLinkFailure(f);
mbed_official	0:51ac1d130fd4	2015	lcp_echos_pending = 0;
mbed_official	0:51ac1d130fd4	2016	}
mbed_official	0:51ac1d130fd4	2017	}
mbed_official	0:51ac1d130fd4	2018
mbed_official	0:51ac1d130fd4	2019	/*
mbed_official	0:51ac1d130fd4	2020	* Make and send the echo request frame.
mbed_official	0:51ac1d130fd4	2021	*/
mbed_official	0:51ac1d130fd4	2022	if (f->state == LS_OPENED) {
mbed_official	0:51ac1d130fd4	2023	lcp_magic = lcp_gotoptions[f->unit].magicnumber;
mbed_official	0:51ac1d130fd4	2024	pktp = pkt;
mbed_official	0:51ac1d130fd4	2025	PUTLONG(lcp_magic, pktp);
mbed_official	0:51ac1d130fd4	2026	fsm_sdata(f, ECHOREQ, (u_char)(lcp_echo_number++ & 0xFF), pkt, (int)(pktp - pkt));
mbed_official	0:51ac1d130fd4	2027	++lcp_echos_pending;
mbed_official	0:51ac1d130fd4	2028	}
mbed_official	0:51ac1d130fd4	2029	}
mbed_official	0:51ac1d130fd4	2030
mbed_official	0:51ac1d130fd4	2031	/*
mbed_official	0:51ac1d130fd4	2032	* lcp_echo_lowerup - Start the timer for the LCP frame
mbed_official	0:51ac1d130fd4	2033	*/
mbed_official	0:51ac1d130fd4	2034
mbed_official	0:51ac1d130fd4	2035	static void
mbed_official	0:51ac1d130fd4	2036	lcp_echo_lowerup (int unit)
mbed_official	0:51ac1d130fd4	2037	{
mbed_official	0:51ac1d130fd4	2038	fsm *f = &lcp_fsm[unit];
mbed_official	0:51ac1d130fd4	2039
mbed_official	0:51ac1d130fd4	2040	/* Clear the parameters for generating echo frames */
mbed_official	0:51ac1d130fd4	2041	lcp_echos_pending = 0;
mbed_official	0:51ac1d130fd4	2042	lcp_echo_number = 0;
mbed_official	0:51ac1d130fd4	2043	lcp_echo_timer_running = 0;
mbed_official	0:51ac1d130fd4	2044
mbed_official	0:51ac1d130fd4	2045	/* If a timeout interval is specified then start the timer */
mbed_official	0:51ac1d130fd4	2046	if (lcp_echo_interval != 0) {
mbed_official	0:51ac1d130fd4	2047	LcpEchoCheck (f);
mbed_official	0:51ac1d130fd4	2048	}
mbed_official	0:51ac1d130fd4	2049	}
mbed_official	0:51ac1d130fd4	2050
mbed_official	0:51ac1d130fd4	2051	/*
mbed_official	0:51ac1d130fd4	2052	* lcp_echo_lowerdown - Stop the timer for the LCP frame
mbed_official	0:51ac1d130fd4	2053	*/
mbed_official	0:51ac1d130fd4	2054
mbed_official	0:51ac1d130fd4	2055	static void
mbed_official	0:51ac1d130fd4	2056	lcp_echo_lowerdown (int unit)
mbed_official	0:51ac1d130fd4	2057	{
mbed_official	0:51ac1d130fd4	2058	fsm *f = &lcp_fsm[unit];
mbed_official	0:51ac1d130fd4	2059
mbed_official	0:51ac1d130fd4	2060	if (lcp_echo_timer_running != 0) {
mbed_official	0:51ac1d130fd4	2061	UNTIMEOUT (LcpEchoTimeout, f);
mbed_official	0:51ac1d130fd4	2062	lcp_echo_timer_running = 0;
mbed_official	0:51ac1d130fd4	2063	}
mbed_official	0:51ac1d130fd4	2064	}
mbed_official	0:51ac1d130fd4	2065
mbed_official	0:51ac1d130fd4	2066	#endif /* PPP_SUPPORT */

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Type:	Library
Created:	07 Apr 2015
Imports:	1
Forks:	0
Commits:	31
Dependents:	1
Dependencies:	0
Followers:	6

netif/ppp/lcp.c@0:51ac1d130fd4, 2012-06-22 (annotated)

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