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NetServices/lwip/netif/ppp/lcp.c@0:05ccbd4f84f1, 2013-12-02 (annotated)

Committer:
hendrikvincent
Date:
Mon Dec 02 09:01:23 2013 +0000
Revision:
0:05ccbd4f84f1
eerste programma;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hendrikvincent 0:05ccbd4f84f1 1 /*****************************************************************************
hendrikvincent 0:05ccbd4f84f1 2 * lcp.c - Network Link Control Protocol program file.
hendrikvincent 0:05ccbd4f84f1 3 *
hendrikvincent 0:05ccbd4f84f1 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
hendrikvincent 0:05ccbd4f84f1 5 * portions Copyright (c) 1997 by Global Election Systems Inc.
hendrikvincent 0:05ccbd4f84f1 6 *
hendrikvincent 0:05ccbd4f84f1 7 * The authors hereby grant permission to use, copy, modify, distribute,
hendrikvincent 0:05ccbd4f84f1 8 * and license this software and its documentation for any purpose, provided
hendrikvincent 0:05ccbd4f84f1 9 * that existing copyright notices are retained in all copies and that this
hendrikvincent 0:05ccbd4f84f1 10 * notice and the following disclaimer are included verbatim in any
hendrikvincent 0:05ccbd4f84f1 11 * distributions. No written agreement, license, or royalty fee is required
hendrikvincent 0:05ccbd4f84f1 12 * for any of the authorized uses.
hendrikvincent 0:05ccbd4f84f1 13 *
hendrikvincent 0:05ccbd4f84f1 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
hendrikvincent 0:05ccbd4f84f1 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
hendrikvincent 0:05ccbd4f84f1 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
hendrikvincent 0:05ccbd4f84f1 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
hendrikvincent 0:05ccbd4f84f1 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
hendrikvincent 0:05ccbd4f84f1 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
hendrikvincent 0:05ccbd4f84f1 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
hendrikvincent 0:05ccbd4f84f1 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
hendrikvincent 0:05ccbd4f84f1 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
hendrikvincent 0:05ccbd4f84f1 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
hendrikvincent 0:05ccbd4f84f1 24 *
hendrikvincent 0:05ccbd4f84f1 25 ******************************************************************************
hendrikvincent 0:05ccbd4f84f1 26 * REVISION HISTORY
hendrikvincent 0:05ccbd4f84f1 27 *
hendrikvincent 0:05ccbd4f84f1 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
hendrikvincent 0:05ccbd4f84f1 29 * Ported to lwIP.
hendrikvincent 0:05ccbd4f84f1 30 * 97-12-01 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
hendrikvincent 0:05ccbd4f84f1 31 * Original.
hendrikvincent 0:05ccbd4f84f1 32 *****************************************************************************/
hendrikvincent 0:05ccbd4f84f1 33
hendrikvincent 0:05ccbd4f84f1 34 /*
hendrikvincent 0:05ccbd4f84f1 35 * lcp.c - PPP Link Control Protocol.
hendrikvincent 0:05ccbd4f84f1 36 *
hendrikvincent 0:05ccbd4f84f1 37 * Copyright (c) 1989 Carnegie Mellon University.
hendrikvincent 0:05ccbd4f84f1 38 * All rights reserved.
hendrikvincent 0:05ccbd4f84f1 39 *
hendrikvincent 0:05ccbd4f84f1 40 * Redistribution and use in source and binary forms are permitted
hendrikvincent 0:05ccbd4f84f1 41 * provided that the above copyright notice and this paragraph are
hendrikvincent 0:05ccbd4f84f1 42 * duplicated in all such forms and that any documentation,
hendrikvincent 0:05ccbd4f84f1 43 * advertising materials, and other materials related to such
hendrikvincent 0:05ccbd4f84f1 44 * distribution and use acknowledge that the software was developed
hendrikvincent 0:05ccbd4f84f1 45 * by Carnegie Mellon University. The name of the
hendrikvincent 0:05ccbd4f84f1 46 * University may not be used to endorse or promote products derived
hendrikvincent 0:05ccbd4f84f1 47 * from this software without specific prior written permission.
hendrikvincent 0:05ccbd4f84f1 48 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
hendrikvincent 0:05ccbd4f84f1 49 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
hendrikvincent 0:05ccbd4f84f1 50 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
hendrikvincent 0:05ccbd4f84f1 51 */
hendrikvincent 0:05ccbd4f84f1 52
hendrikvincent 0:05ccbd4f84f1 53
hendrikvincent 0:05ccbd4f84f1 54 #include "lwip/opt.h"
hendrikvincent 0:05ccbd4f84f1 55
hendrikvincent 0:05ccbd4f84f1 56 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
hendrikvincent 0:05ccbd4f84f1 57
hendrikvincent 0:05ccbd4f84f1 58 #include "ppp.h"
hendrikvincent 0:05ccbd4f84f1 59 #include "pppdebug.h"
hendrikvincent 0:05ccbd4f84f1 60
hendrikvincent 0:05ccbd4f84f1 61 #include "fsm.h"
hendrikvincent 0:05ccbd4f84f1 62 #include "chap.h"
hendrikvincent 0:05ccbd4f84f1 63 #include "magic.h"
hendrikvincent 0:05ccbd4f84f1 64 #include "auth.h"
hendrikvincent 0:05ccbd4f84f1 65 #include "lcp.h"
hendrikvincent 0:05ccbd4f84f1 66
hendrikvincent 0:05ccbd4f84f1 67 #include <string.h>
hendrikvincent 0:05ccbd4f84f1 68
hendrikvincent 0:05ccbd4f84f1 69 #if PPPOE_SUPPORT
hendrikvincent 0:05ccbd4f84f1 70 #include "netif/ppp_oe.h"
hendrikvincent 0:05ccbd4f84f1 71 #else
hendrikvincent 0:05ccbd4f84f1 72 #define PPPOE_MAXMTU PPP_MAXMRU
hendrikvincent 0:05ccbd4f84f1 73 #endif
hendrikvincent 0:05ccbd4f84f1 74
hendrikvincent 0:05ccbd4f84f1 75 #if 0 /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 76 /*
hendrikvincent 0:05ccbd4f84f1 77 * LCP-related command-line options.
hendrikvincent 0:05ccbd4f84f1 78 */
hendrikvincent 0:05ccbd4f84f1 79 int lcp_echo_interval = 0; /* Interval between LCP echo-requests */
hendrikvincent 0:05ccbd4f84f1 80 int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */
hendrikvincent 0:05ccbd4f84f1 81 bool lax_recv = 0; /* accept control chars in asyncmap */
hendrikvincent 0:05ccbd4f84f1 82
hendrikvincent 0:05ccbd4f84f1 83 static int setescape (char **);
hendrikvincent 0:05ccbd4f84f1 84
hendrikvincent 0:05ccbd4f84f1 85 static option_t lcp_option_list[] = {
hendrikvincent 0:05ccbd4f84f1 86 /* LCP options */
hendrikvincent 0:05ccbd4f84f1 87 /* list stripped for simplicity */
hendrikvincent 0:05ccbd4f84f1 88 {NULL}
hendrikvincent 0:05ccbd4f84f1 89 };
hendrikvincent 0:05ccbd4f84f1 90 #endif /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 91
hendrikvincent 0:05ccbd4f84f1 92 /* options */
hendrikvincent 0:05ccbd4f84f1 93 LinkPhase lcp_phase[NUM_PPP]; /* Phase of link session (RFC 1661) */
hendrikvincent 0:05ccbd4f84f1 94 static u_int lcp_echo_interval = LCP_ECHOINTERVAL; /* Interval between LCP echo-requests */
hendrikvincent 0:05ccbd4f84f1 95 static u_int lcp_echo_fails = LCP_MAXECHOFAILS; /* Tolerance to unanswered echo-requests */
hendrikvincent 0:05ccbd4f84f1 96
hendrikvincent 0:05ccbd4f84f1 97 /* global vars */
hendrikvincent 0:05ccbd4f84f1 98 static fsm lcp_fsm[NUM_PPP]; /* LCP fsm structure (global)*/
hendrikvincent 0:05ccbd4f84f1 99 lcp_options lcp_wantoptions[NUM_PPP]; /* Options that we want to request */
hendrikvincent 0:05ccbd4f84f1 100 lcp_options lcp_gotoptions[NUM_PPP]; /* Options that peer ack'd */
hendrikvincent 0:05ccbd4f84f1 101 lcp_options lcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */
hendrikvincent 0:05ccbd4f84f1 102 lcp_options lcp_hisoptions[NUM_PPP]; /* Options that we ack'd */
hendrikvincent 0:05ccbd4f84f1 103 ext_accm xmit_accm[NUM_PPP]; /* extended transmit ACCM */
hendrikvincent 0:05ccbd4f84f1 104
hendrikvincent 0:05ccbd4f84f1 105 static u32_t lcp_echos_pending = 0; /* Number of outstanding echo msgs */
hendrikvincent 0:05ccbd4f84f1 106 static u32_t lcp_echo_number = 0; /* ID number of next echo frame */
hendrikvincent 0:05ccbd4f84f1 107 static u32_t lcp_echo_timer_running = 0; /* TRUE if a timer is running */
hendrikvincent 0:05ccbd4f84f1 108
hendrikvincent 0:05ccbd4f84f1 109 /* @todo: do we really need such a large buffer? The typical 1500 bytes seem too much. */
hendrikvincent 0:05ccbd4f84f1 110 static u_char nak_buffer[PPP_MRU]; /* where we construct a nak packet */
hendrikvincent 0:05ccbd4f84f1 111
hendrikvincent 0:05ccbd4f84f1 112 /*
hendrikvincent 0:05ccbd4f84f1 113 * Callbacks for fsm code. (CI = Configuration Information)
hendrikvincent 0:05ccbd4f84f1 114 */
hendrikvincent 0:05ccbd4f84f1 115 static void lcp_resetci (fsm*); /* Reset our CI */
hendrikvincent 0:05ccbd4f84f1 116 static int lcp_cilen (fsm*); /* Return length of our CI */
hendrikvincent 0:05ccbd4f84f1 117 static void lcp_addci (fsm*, u_char*, int*); /* Add our CI to pkt */
hendrikvincent 0:05ccbd4f84f1 118 static int lcp_ackci (fsm*, u_char*, int); /* Peer ack'd our CI */
hendrikvincent 0:05ccbd4f84f1 119 static int lcp_nakci (fsm*, u_char*, int); /* Peer nak'd our CI */
hendrikvincent 0:05ccbd4f84f1 120 static int lcp_rejci (fsm*, u_char*, int); /* Peer rej'd our CI */
hendrikvincent 0:05ccbd4f84f1 121 static int lcp_reqci (fsm*, u_char*, int*, int); /* Rcv peer CI */
hendrikvincent 0:05ccbd4f84f1 122 static void lcp_up (fsm*); /* We're UP */
hendrikvincent 0:05ccbd4f84f1 123 static void lcp_down (fsm*); /* We're DOWN */
hendrikvincent 0:05ccbd4f84f1 124 static void lcp_starting (fsm*); /* We need lower layer up */
hendrikvincent 0:05ccbd4f84f1 125 static void lcp_finished (fsm*); /* We need lower layer down */
hendrikvincent 0:05ccbd4f84f1 126 static int lcp_extcode (fsm*, int, u_char, u_char*, int);
hendrikvincent 0:05ccbd4f84f1 127 static void lcp_rprotrej (fsm*, u_char*, int);
hendrikvincent 0:05ccbd4f84f1 128
hendrikvincent 0:05ccbd4f84f1 129 /*
hendrikvincent 0:05ccbd4f84f1 130 * routines to send LCP echos to peer
hendrikvincent 0:05ccbd4f84f1 131 */
hendrikvincent 0:05ccbd4f84f1 132
hendrikvincent 0:05ccbd4f84f1 133 static void lcp_echo_lowerup (int);
hendrikvincent 0:05ccbd4f84f1 134 static void lcp_echo_lowerdown (int);
hendrikvincent 0:05ccbd4f84f1 135 static void LcpEchoTimeout (void*);
hendrikvincent 0:05ccbd4f84f1 136 static void lcp_received_echo_reply (fsm*, int, u_char*, int);
hendrikvincent 0:05ccbd4f84f1 137 static void LcpSendEchoRequest (fsm*);
hendrikvincent 0:05ccbd4f84f1 138 static void LcpLinkFailure (fsm*);
hendrikvincent 0:05ccbd4f84f1 139 static void LcpEchoCheck (fsm*);
hendrikvincent 0:05ccbd4f84f1 140
hendrikvincent 0:05ccbd4f84f1 141 static fsm_callbacks lcp_callbacks = { /* LCP callback routines */
hendrikvincent 0:05ccbd4f84f1 142 lcp_resetci, /* Reset our Configuration Information */
hendrikvincent 0:05ccbd4f84f1 143 lcp_cilen, /* Length of our Configuration Information */
hendrikvincent 0:05ccbd4f84f1 144 lcp_addci, /* Add our Configuration Information */
hendrikvincent 0:05ccbd4f84f1 145 lcp_ackci, /* ACK our Configuration Information */
hendrikvincent 0:05ccbd4f84f1 146 lcp_nakci, /* NAK our Configuration Information */
hendrikvincent 0:05ccbd4f84f1 147 lcp_rejci, /* Reject our Configuration Information */
hendrikvincent 0:05ccbd4f84f1 148 lcp_reqci, /* Request peer's Configuration Information */
hendrikvincent 0:05ccbd4f84f1 149 lcp_up, /* Called when fsm reaches LS_OPENED state */
hendrikvincent 0:05ccbd4f84f1 150 lcp_down, /* Called when fsm leaves LS_OPENED state */
hendrikvincent 0:05ccbd4f84f1 151 lcp_starting, /* Called when we want the lower layer up */
hendrikvincent 0:05ccbd4f84f1 152 lcp_finished, /* Called when we want the lower layer down */
hendrikvincent 0:05ccbd4f84f1 153 NULL, /* Called when Protocol-Reject received */
hendrikvincent 0:05ccbd4f84f1 154 NULL, /* Retransmission is necessary */
hendrikvincent 0:05ccbd4f84f1 155 lcp_extcode, /* Called to handle LCP-specific codes */
hendrikvincent 0:05ccbd4f84f1 156 "LCP" /* String name of protocol */
hendrikvincent 0:05ccbd4f84f1 157 };
hendrikvincent 0:05ccbd4f84f1 158
hendrikvincent 0:05ccbd4f84f1 159 /*
hendrikvincent 0:05ccbd4f84f1 160 * Protocol entry points.
hendrikvincent 0:05ccbd4f84f1 161 * Some of these are called directly.
hendrikvincent 0:05ccbd4f84f1 162 */
hendrikvincent 0:05ccbd4f84f1 163
hendrikvincent 0:05ccbd4f84f1 164 static void lcp_input (int, u_char *, int);
hendrikvincent 0:05ccbd4f84f1 165 static void lcp_protrej (int);
hendrikvincent 0:05ccbd4f84f1 166
hendrikvincent 0:05ccbd4f84f1 167 struct protent lcp_protent = {
hendrikvincent 0:05ccbd4f84f1 168 PPP_LCP,
hendrikvincent 0:05ccbd4f84f1 169 lcp_init,
hendrikvincent 0:05ccbd4f84f1 170 lcp_input,
hendrikvincent 0:05ccbd4f84f1 171 lcp_protrej,
hendrikvincent 0:05ccbd4f84f1 172 lcp_lowerup,
hendrikvincent 0:05ccbd4f84f1 173 lcp_lowerdown,
hendrikvincent 0:05ccbd4f84f1 174 lcp_open,
hendrikvincent 0:05ccbd4f84f1 175 lcp_close,
hendrikvincent 0:05ccbd4f84f1 176 #if PPP_ADDITIONAL_CALLBACKS
hendrikvincent 0:05ccbd4f84f1 177 lcp_printpkt,
hendrikvincent 0:05ccbd4f84f1 178 NULL,
hendrikvincent 0:05ccbd4f84f1 179 #endif /* PPP_ADDITIONAL_CALLBACKS */
hendrikvincent 0:05ccbd4f84f1 180 1,
hendrikvincent 0:05ccbd4f84f1 181 "LCP",
hendrikvincent 0:05ccbd4f84f1 182 #if PPP_ADDITIONAL_CALLBACKS
hendrikvincent 0:05ccbd4f84f1 183 NULL,
hendrikvincent 0:05ccbd4f84f1 184 NULL,
hendrikvincent 0:05ccbd4f84f1 185 NULL
hendrikvincent 0:05ccbd4f84f1 186 #endif /* PPP_ADDITIONAL_CALLBACKS */
hendrikvincent 0:05ccbd4f84f1 187 };
hendrikvincent 0:05ccbd4f84f1 188
hendrikvincent 0:05ccbd4f84f1 189 int lcp_loopbackfail = DEFLOOPBACKFAIL;
hendrikvincent 0:05ccbd4f84f1 190
hendrikvincent 0:05ccbd4f84f1 191 /*
hendrikvincent 0:05ccbd4f84f1 192 * Length of each type of configuration option (in octets)
hendrikvincent 0:05ccbd4f84f1 193 */
hendrikvincent 0:05ccbd4f84f1 194 #define CILEN_VOID 2
hendrikvincent 0:05ccbd4f84f1 195 #define CILEN_CHAR 3
hendrikvincent 0:05ccbd4f84f1 196 #define CILEN_SHORT 4 /* CILEN_VOID + sizeof(short) */
hendrikvincent 0:05ccbd4f84f1 197 #define CILEN_CHAP 5 /* CILEN_VOID + sizeof(short) + 1 */
hendrikvincent 0:05ccbd4f84f1 198 #define CILEN_LONG 6 /* CILEN_VOID + sizeof(long) */
hendrikvincent 0:05ccbd4f84f1 199 #define CILEN_LQR 8 /* CILEN_VOID + sizeof(short) + sizeof(long) */
hendrikvincent 0:05ccbd4f84f1 200 #define CILEN_CBCP 3
hendrikvincent 0:05ccbd4f84f1 201
hendrikvincent 0:05ccbd4f84f1 202 #define CODENAME(x) ((x) == CONFACK ? "ACK" : (x) == CONFNAK ? "NAK" : "REJ")
hendrikvincent 0:05ccbd4f84f1 203
hendrikvincent 0:05ccbd4f84f1 204 #if 0 /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 205 /*
hendrikvincent 0:05ccbd4f84f1 206 * setescape - add chars to the set we escape on transmission.
hendrikvincent 0:05ccbd4f84f1 207 */
hendrikvincent 0:05ccbd4f84f1 208 static int
hendrikvincent 0:05ccbd4f84f1 209 setescape(argv)
hendrikvincent 0:05ccbd4f84f1 210 char **argv;
hendrikvincent 0:05ccbd4f84f1 211 {
hendrikvincent 0:05ccbd4f84f1 212 int n, ret;
hendrikvincent 0:05ccbd4f84f1 213 char *p, *endp;
hendrikvincent 0:05ccbd4f84f1 214
hendrikvincent 0:05ccbd4f84f1 215 p = *argv;
hendrikvincent 0:05ccbd4f84f1 216 ret = 1;
hendrikvincent 0:05ccbd4f84f1 217 while (*p) {
hendrikvincent 0:05ccbd4f84f1 218 n = strtol(p, &endp, 16);
hendrikvincent 0:05ccbd4f84f1 219 if (p == endp) {
hendrikvincent 0:05ccbd4f84f1 220 option_error("escape parameter contains invalid hex number '%s'", p);
hendrikvincent 0:05ccbd4f84f1 221 return 0;
hendrikvincent 0:05ccbd4f84f1 222 }
hendrikvincent 0:05ccbd4f84f1 223 p = endp;
hendrikvincent 0:05ccbd4f84f1 224 if (n < 0 || n == 0x5E || n > 0xFF) {
hendrikvincent 0:05ccbd4f84f1 225 option_error("can't escape character 0x%x", n);
hendrikvincent 0:05ccbd4f84f1 226 ret = 0;
hendrikvincent 0:05ccbd4f84f1 227 } else
hendrikvincent 0:05ccbd4f84f1 228 xmit_accm[0][n >> 5] |= 1 << (n & 0x1F);
hendrikvincent 0:05ccbd4f84f1 229 while (*p == ',' || *p == ' ')
hendrikvincent 0:05ccbd4f84f1 230 ++p;
hendrikvincent 0:05ccbd4f84f1 231 }
hendrikvincent 0:05ccbd4f84f1 232 return ret;
hendrikvincent 0:05ccbd4f84f1 233 }
hendrikvincent 0:05ccbd4f84f1 234 #endif /* UNUSED */
hendrikvincent 0:05ccbd4f84f1 235
hendrikvincent 0:05ccbd4f84f1 236 /*
hendrikvincent 0:05ccbd4f84f1 237 * lcp_init - Initialize LCP.
hendrikvincent 0:05ccbd4f84f1 238 */
hendrikvincent 0:05ccbd4f84f1 239 void
hendrikvincent 0:05ccbd4f84f1 240 lcp_init(int unit)
hendrikvincent 0:05ccbd4f84f1 241 {
hendrikvincent 0:05ccbd4f84f1 242 fsm *f = &lcp_fsm[unit];
hendrikvincent 0:05ccbd4f84f1 243 lcp_options *wo = &lcp_wantoptions[unit];
hendrikvincent 0:05ccbd4f84f1 244 lcp_options *ao = &lcp_allowoptions[unit];
hendrikvincent 0:05ccbd4f84f1 245
hendrikvincent 0:05ccbd4f84f1 246 f->unit = unit;
hendrikvincent 0:05ccbd4f84f1 247 f->protocol = PPP_LCP;
hendrikvincent 0:05ccbd4f84f1 248 f->callbacks = &lcp_callbacks;
hendrikvincent 0:05ccbd4f84f1 249
hendrikvincent 0:05ccbd4f84f1 250 fsm_init(f);
hendrikvincent 0:05ccbd4f84f1 251
hendrikvincent 0:05ccbd4f84f1 252 wo->passive = 0;
hendrikvincent 0:05ccbd4f84f1 253 wo->silent = 0;
hendrikvincent 0:05ccbd4f84f1 254 wo->restart = 0; /* Set to 1 in kernels or multi-line implementations */
hendrikvincent 0:05ccbd4f84f1 255 wo->neg_mru = 1;
hendrikvincent 0:05ccbd4f84f1 256 wo->mru = PPP_DEFMRU;
hendrikvincent 0:05ccbd4f84f1 257 wo->neg_asyncmap = 1;
hendrikvincent 0:05ccbd4f84f1 258 wo->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */
hendrikvincent 0:05ccbd4f84f1 259 wo->neg_chap = 0; /* Set to 1 on server */
hendrikvincent 0:05ccbd4f84f1 260 wo->neg_upap = 0; /* Set to 1 on server */
hendrikvincent 0:05ccbd4f84f1 261 wo->chap_mdtype = CHAP_DIGEST_MD5;
hendrikvincent 0:05ccbd4f84f1 262 wo->neg_magicnumber = 1;
hendrikvincent 0:05ccbd4f84f1 263 wo->neg_pcompression = 1;
hendrikvincent 0:05ccbd4f84f1 264 wo->neg_accompression = 1;
hendrikvincent 0:05ccbd4f84f1 265 wo->neg_lqr = 0; /* no LQR implementation yet */
hendrikvincent 0:05ccbd4f84f1 266 wo->neg_cbcp = 0;
hendrikvincent 0:05ccbd4f84f1 267
hendrikvincent 0:05ccbd4f84f1 268 ao->neg_mru = 1;
hendrikvincent 0:05ccbd4f84f1 269 ao->mru = PPP_MAXMRU;
hendrikvincent 0:05ccbd4f84f1 270 ao->neg_asyncmap = 1;
hendrikvincent 0:05ccbd4f84f1 271 ao->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */
hendrikvincent 0:05ccbd4f84f1 272 ao->neg_chap = (CHAP_SUPPORT != 0);
hendrikvincent 0:05ccbd4f84f1 273 ao->chap_mdtype = CHAP_DIGEST_MD5;
hendrikvincent 0:05ccbd4f84f1 274 ao->neg_upap = (PAP_SUPPORT != 0);
hendrikvincent 0:05ccbd4f84f1 275 ao->neg_magicnumber = 1;
hendrikvincent 0:05ccbd4f84f1 276 ao->neg_pcompression = 1;
hendrikvincent 0:05ccbd4f84f1 277 ao->neg_accompression = 1;
hendrikvincent 0:05ccbd4f84f1 278 ao->neg_lqr = 0; /* no LQR implementation yet */
hendrikvincent 0:05ccbd4f84f1 279 ao->neg_cbcp = (CBCP_SUPPORT != 0);
hendrikvincent 0:05ccbd4f84f1 280
hendrikvincent 0:05ccbd4f84f1 281 /*
hendrikvincent 0:05ccbd4f84f1 282 * Set transmit escape for the flag and escape characters plus anything
hendrikvincent 0:05ccbd4f84f1 283 * set for the allowable options.
hendrikvincent 0:05ccbd4f84f1 284 */
hendrikvincent 0:05ccbd4f84f1 285 memset(xmit_accm[unit], 0, sizeof(xmit_accm[0]));
hendrikvincent 0:05ccbd4f84f1 286 xmit_accm[unit][15] = 0x60;
hendrikvincent 0:05ccbd4f84f1 287 xmit_accm[unit][0] = (u_char)((ao->asyncmap & 0xFF));
hendrikvincent 0:05ccbd4f84f1 288 xmit_accm[unit][1] = (u_char)((ao->asyncmap >> 8) & 0xFF);
hendrikvincent 0:05ccbd4f84f1 289 xmit_accm[unit][2] = (u_char)((ao->asyncmap >> 16) & 0xFF);
hendrikvincent 0:05ccbd4f84f1 290 xmit_accm[unit][3] = (u_char)((ao->asyncmap >> 24) & 0xFF);
hendrikvincent 0:05ccbd4f84f1 291 LCPDEBUG(LOG_INFO, ("lcp_init: xmit_accm=%X %X %X %X\n",
hendrikvincent 0:05ccbd4f84f1 292 xmit_accm[unit][0],
hendrikvincent 0:05ccbd4f84f1 293 xmit_accm[unit][1],
hendrikvincent 0:05ccbd4f84f1 294 xmit_accm[unit][2],
hendrikvincent 0:05ccbd4f84f1 295 xmit_accm[unit][3]));
hendrikvincent 0:05ccbd4f84f1 296
hendrikvincent 0:05ccbd4f84f1 297 lcp_phase[unit] = PHASE_INITIALIZE;
hendrikvincent 0:05ccbd4f84f1 298 }
hendrikvincent 0:05ccbd4f84f1 299
hendrikvincent 0:05ccbd4f84f1 300
hendrikvincent 0:05ccbd4f84f1 301 /*
hendrikvincent 0:05ccbd4f84f1 302 * lcp_open - LCP is allowed to come up.
hendrikvincent 0:05ccbd4f84f1 303 */
hendrikvincent 0:05ccbd4f84f1 304 void
hendrikvincent 0:05ccbd4f84f1 305 lcp_open(int unit)
hendrikvincent 0:05ccbd4f84f1 306 {
hendrikvincent 0:05ccbd4f84f1 307 fsm *f = &lcp_fsm[unit];
hendrikvincent 0:05ccbd4f84f1 308 lcp_options *wo = &lcp_wantoptions[unit];
hendrikvincent 0:05ccbd4f84f1 309
hendrikvincent 0:05ccbd4f84f1 310 f->flags = 0;
hendrikvincent 0:05ccbd4f84f1 311 if (wo->passive) {
hendrikvincent 0:05ccbd4f84f1 312 f->flags |= OPT_PASSIVE;
hendrikvincent 0:05ccbd4f84f1 313 }
hendrikvincent 0:05ccbd4f84f1 314 if (wo->silent) {
hendrikvincent 0:05ccbd4f84f1 315 f->flags |= OPT_SILENT;
hendrikvincent 0:05ccbd4f84f1 316 }
hendrikvincent 0:05ccbd4f84f1 317 fsm_open(f);
hendrikvincent 0:05ccbd4f84f1 318
hendrikvincent 0:05ccbd4f84f1 319 lcp_phase[unit] = PHASE_ESTABLISH;
hendrikvincent 0:05ccbd4f84f1 320 }
hendrikvincent 0:05ccbd4f84f1 321
hendrikvincent 0:05ccbd4f84f1 322
hendrikvincent 0:05ccbd4f84f1 323 /*
hendrikvincent 0:05ccbd4f84f1 324 * lcp_close - Take LCP down.
hendrikvincent 0:05ccbd4f84f1 325 */
hendrikvincent 0:05ccbd4f84f1 326 void
hendrikvincent 0:05ccbd4f84f1 327 lcp_close(int unit, char *reason)
hendrikvincent 0:05ccbd4f84f1 328 {
hendrikvincent 0:05ccbd4f84f1 329 fsm *f = &lcp_fsm[unit];
hendrikvincent 0:05ccbd4f84f1 330
hendrikvincent 0:05ccbd4f84f1 331 if (lcp_phase[unit] != PHASE_DEAD) {
hendrikvincent 0:05ccbd4f84f1 332 lcp_phase[unit] = PHASE_TERMINATE;
hendrikvincent 0:05ccbd4f84f1 333 }
hendrikvincent 0:05ccbd4f84f1 334 if (f->state == LS_STOPPED && f->flags & (OPT_PASSIVE|OPT_SILENT)) {
hendrikvincent 0:05ccbd4f84f1 335 /*
hendrikvincent 0:05ccbd4f84f1 336 * This action is not strictly according to the FSM in RFC1548,
hendrikvincent 0:05ccbd4f84f1 337 * but it does mean that the program terminates if you do an
hendrikvincent 0:05ccbd4f84f1 338 * lcp_close() in passive/silent mode when a connection hasn't
hendrikvincent 0:05ccbd4f84f1 339 * been established.
hendrikvincent 0:05ccbd4f84f1 340 */
hendrikvincent 0:05ccbd4f84f1 341 f->state = LS_CLOSED;
hendrikvincent 0:05ccbd4f84f1 342 lcp_finished(f);
hendrikvincent 0:05ccbd4f84f1 343 } else {
hendrikvincent 0:05ccbd4f84f1 344 fsm_close(f, reason);
hendrikvincent 0:05ccbd4f84f1 345 }
hendrikvincent 0:05ccbd4f84f1 346 }
hendrikvincent 0:05ccbd4f84f1 347
hendrikvincent 0:05ccbd4f84f1 348
hendrikvincent 0:05ccbd4f84f1 349 /*
hendrikvincent 0:05ccbd4f84f1 350 * lcp_lowerup - The lower layer is up.
hendrikvincent 0:05ccbd4f84f1 351 */
hendrikvincent 0:05ccbd4f84f1 352 void
hendrikvincent 0:05ccbd4f84f1 353 lcp_lowerup(int unit)
hendrikvincent 0:05ccbd4f84f1 354 {
hendrikvincent 0:05ccbd4f84f1 355 lcp_options *wo = &lcp_wantoptions[unit];
hendrikvincent 0:05ccbd4f84f1 356
hendrikvincent 0:05ccbd4f84f1 357 /*
hendrikvincent 0:05ccbd4f84f1 358 * Don't use A/C or protocol compression on transmission,
hendrikvincent 0:05ccbd4f84f1 359 * but accept A/C and protocol compressed packets
hendrikvincent 0:05ccbd4f84f1 360 * if we are going to ask for A/C and protocol compression.
hendrikvincent 0:05ccbd4f84f1 361 */
hendrikvincent 0:05ccbd4f84f1 362 ppp_set_xaccm(unit, &xmit_accm[unit]);
hendrikvincent 0:05ccbd4f84f1 363 ppp_send_config(unit, PPP_MRU, 0xffffffffl, 0, 0);
hendrikvincent 0:05ccbd4f84f1 364 ppp_recv_config(unit, PPP_MRU, 0x00000000l,
hendrikvincent 0:05ccbd4f84f1 365 wo->neg_pcompression, wo->neg_accompression);
hendrikvincent 0:05ccbd4f84f1 366 peer_mru[unit] = PPP_MRU;
hendrikvincent 0:05ccbd4f84f1 367 lcp_allowoptions[unit].asyncmap = (u_long)xmit_accm[unit][0]
hendrikvincent 0:05ccbd4f84f1 368 | ((u_long)xmit_accm[unit][1] << 8)
hendrikvincent 0:05ccbd4f84f1 369 | ((u_long)xmit_accm[unit][2] << 16)
hendrikvincent 0:05ccbd4f84f1 370 | ((u_long)xmit_accm[unit][3] << 24);
hendrikvincent 0:05ccbd4f84f1 371 LCPDEBUG(LOG_INFO, ("lcp_lowerup: asyncmap=%X %X %X %X\n",
hendrikvincent 0:05ccbd4f84f1 372 xmit_accm[unit][3],
hendrikvincent 0:05ccbd4f84f1 373 xmit_accm[unit][2],
hendrikvincent 0:05ccbd4f84f1 374 xmit_accm[unit][1],
hendrikvincent 0:05ccbd4f84f1 375 xmit_accm[unit][0]));
hendrikvincent 0:05ccbd4f84f1 376
hendrikvincent 0:05ccbd4f84f1 377 fsm_lowerup(&lcp_fsm[unit]);
hendrikvincent 0:05ccbd4f84f1 378 }
hendrikvincent 0:05ccbd4f84f1 379
hendrikvincent 0:05ccbd4f84f1 380
hendrikvincent 0:05ccbd4f84f1 381 /*
hendrikvincent 0:05ccbd4f84f1 382 * lcp_lowerdown - The lower layer is down.
hendrikvincent 0:05ccbd4f84f1 383 */
hendrikvincent 0:05ccbd4f84f1 384 void
hendrikvincent 0:05ccbd4f84f1 385 lcp_lowerdown(int unit)
hendrikvincent 0:05ccbd4f84f1 386 {
hendrikvincent 0:05ccbd4f84f1 387 fsm_lowerdown(&lcp_fsm[unit]);
hendrikvincent 0:05ccbd4f84f1 388 }
hendrikvincent 0:05ccbd4f84f1 389
hendrikvincent 0:05ccbd4f84f1 390
hendrikvincent 0:05ccbd4f84f1 391 /*
hendrikvincent 0:05ccbd4f84f1 392 * lcp_input - Input LCP packet.
hendrikvincent 0:05ccbd4f84f1 393 */
hendrikvincent 0:05ccbd4f84f1 394 static void
hendrikvincent 0:05ccbd4f84f1 395 lcp_input(int unit, u_char *p, int len)
hendrikvincent 0:05ccbd4f84f1 396 {
hendrikvincent 0:05ccbd4f84f1 397 fsm *f = &lcp_fsm[unit];
hendrikvincent 0:05ccbd4f84f1 398
hendrikvincent 0:05ccbd4f84f1 399 fsm_input(f, p, len);
hendrikvincent 0:05ccbd4f84f1 400 }
hendrikvincent 0:05ccbd4f84f1 401
hendrikvincent 0:05ccbd4f84f1 402
hendrikvincent 0:05ccbd4f84f1 403 /*
hendrikvincent 0:05ccbd4f84f1 404 * lcp_extcode - Handle a LCP-specific code.
hendrikvincent 0:05ccbd4f84f1 405 */
hendrikvincent 0:05ccbd4f84f1 406 static int
hendrikvincent 0:05ccbd4f84f1 407 lcp_extcode(fsm *f, int code, u_char id, u_char *inp, int len)
hendrikvincent 0:05ccbd4f84f1 408 {
hendrikvincent 0:05ccbd4f84f1 409 u_char *magp;
hendrikvincent 0:05ccbd4f84f1 410
hendrikvincent 0:05ccbd4f84f1 411 switch( code ){
hendrikvincent 0:05ccbd4f84f1 412 case PROTREJ:
hendrikvincent 0:05ccbd4f84f1 413 lcp_rprotrej(f, inp, len);
hendrikvincent 0:05ccbd4f84f1 414 break;
hendrikvincent 0:05ccbd4f84f1 415
hendrikvincent 0:05ccbd4f84f1 416 case ECHOREQ:
hendrikvincent 0:05ccbd4f84f1 417 if (f->state != LS_OPENED) {
hendrikvincent 0:05ccbd4f84f1 418 break;
hendrikvincent 0:05ccbd4f84f1 419 }
hendrikvincent 0:05ccbd4f84f1 420 LCPDEBUG(LOG_INFO, ("lcp: Echo-Request, Rcvd id %d\n", id));
hendrikvincent 0:05ccbd4f84f1 421 magp = inp;
hendrikvincent 0:05ccbd4f84f1 422 PUTLONG(lcp_gotoptions[f->unit].magicnumber, magp);
hendrikvincent 0:05ccbd4f84f1 423 fsm_sdata(f, ECHOREP, id, inp, len);
hendrikvincent 0:05ccbd4f84f1 424 break;
hendrikvincent 0:05ccbd4f84f1 425
hendrikvincent 0:05ccbd4f84f1 426 case ECHOREP:
hendrikvincent 0:05ccbd4f84f1 427 lcp_received_echo_reply(f, id, inp, len);
hendrikvincent 0:05ccbd4f84f1 428 break;
hendrikvincent 0:05ccbd4f84f1 429
hendrikvincent 0:05ccbd4f84f1 430 case DISCREQ:
hendrikvincent 0:05ccbd4f84f1 431 break;
hendrikvincent 0:05ccbd4f84f1 432
hendrikvincent 0:05ccbd4f84f1 433 default:
hendrikvincent 0:05ccbd4f84f1 434 return 0;
hendrikvincent 0:05ccbd4f84f1 435 }
hendrikvincent 0:05ccbd4f84f1 436 return 1;
hendrikvincent 0:05ccbd4f84f1 437 }
hendrikvincent 0:05ccbd4f84f1 438
hendrikvincent 0:05ccbd4f84f1 439
hendrikvincent 0:05ccbd4f84f1 440 /*
hendrikvincent 0:05ccbd4f84f1 441 * lcp_rprotrej - Receive an Protocol-Reject.
hendrikvincent 0:05ccbd4f84f1 442 *
hendrikvincent 0:05ccbd4f84f1 443 * Figure out which protocol is rejected and inform it.
hendrikvincent 0:05ccbd4f84f1 444 */
hendrikvincent 0:05ccbd4f84f1 445 static void
hendrikvincent 0:05ccbd4f84f1 446 lcp_rprotrej(fsm *f, u_char *inp, int len)
hendrikvincent 0:05ccbd4f84f1 447 {
hendrikvincent 0:05ccbd4f84f1 448 int i;
hendrikvincent 0:05ccbd4f84f1 449 struct protent *protp;
hendrikvincent 0:05ccbd4f84f1 450 u_short prot;
hendrikvincent 0:05ccbd4f84f1 451
hendrikvincent 0:05ccbd4f84f1 452 if (len < (int)sizeof (u_short)) {
hendrikvincent 0:05ccbd4f84f1 453 LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd short Protocol-Reject packet!\n"));
hendrikvincent 0:05ccbd4f84f1 454 return;
hendrikvincent 0:05ccbd4f84f1 455 }
hendrikvincent 0:05ccbd4f84f1 456
hendrikvincent 0:05ccbd4f84f1 457 GETSHORT(prot, inp);
hendrikvincent 0:05ccbd4f84f1 458
hendrikvincent 0:05ccbd4f84f1 459 LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd Protocol-Reject packet for %x!\n", prot));
hendrikvincent 0:05ccbd4f84f1 460
hendrikvincent 0:05ccbd4f84f1 461 /*
hendrikvincent 0:05ccbd4f84f1 462 * Protocol-Reject packets received in any state other than the LCP
hendrikvincent 0:05ccbd4f84f1 463 * LS_OPENED state SHOULD be silently discarded.
hendrikvincent 0:05ccbd4f84f1 464 */
hendrikvincent 0:05ccbd4f84f1 465 if( f->state != LS_OPENED ) {
hendrikvincent 0:05ccbd4f84f1 466 LCPDEBUG(LOG_INFO, ("Protocol-Reject discarded: LCP in state %d\n", f->state));
hendrikvincent 0:05ccbd4f84f1 467 return;
hendrikvincent 0:05ccbd4f84f1 468 }
hendrikvincent 0:05ccbd4f84f1 469
hendrikvincent 0:05ccbd4f84f1 470 /*
hendrikvincent 0:05ccbd4f84f1 471 * Upcall the proper Protocol-Reject routine.
hendrikvincent 0:05ccbd4f84f1 472 */
hendrikvincent 0:05ccbd4f84f1 473 for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) {
hendrikvincent 0:05ccbd4f84f1 474 if (protp->protocol == prot && protp->enabled_flag) {
hendrikvincent 0:05ccbd4f84f1 475 (*protp->protrej)(f->unit);
hendrikvincent 0:05ccbd4f84f1 476 return;
hendrikvincent 0:05ccbd4f84f1 477 }
hendrikvincent 0:05ccbd4f84f1 478 }
hendrikvincent 0:05ccbd4f84f1 479
hendrikvincent 0:05ccbd4f84f1 480 LCPDEBUG(LOG_WARNING, ("Protocol-Reject for unsupported protocol 0x%x\n", prot));
hendrikvincent 0:05ccbd4f84f1 481 }
hendrikvincent 0:05ccbd4f84f1 482
hendrikvincent 0:05ccbd4f84f1 483
hendrikvincent 0:05ccbd4f84f1 484 /*
hendrikvincent 0:05ccbd4f84f1 485 * lcp_protrej - A Protocol-Reject was received.
hendrikvincent 0:05ccbd4f84f1 486 */
hendrikvincent 0:05ccbd4f84f1 487 static void
hendrikvincent 0:05ccbd4f84f1 488 lcp_protrej(int unit)
hendrikvincent 0:05ccbd4f84f1 489 {
hendrikvincent 0:05ccbd4f84f1 490 LWIP_UNUSED_ARG(unit);
hendrikvincent 0:05ccbd4f84f1 491 /*
hendrikvincent 0:05ccbd4f84f1 492 * Can't reject LCP!
hendrikvincent 0:05ccbd4f84f1 493 */
hendrikvincent 0:05ccbd4f84f1 494 LCPDEBUG(LOG_WARNING, ("lcp_protrej: Received Protocol-Reject for LCP!\n"));
hendrikvincent 0:05ccbd4f84f1 495 fsm_protreject(&lcp_fsm[unit]);
hendrikvincent 0:05ccbd4f84f1 496 }
hendrikvincent 0:05ccbd4f84f1 497
hendrikvincent 0:05ccbd4f84f1 498
hendrikvincent 0:05ccbd4f84f1 499 /*
hendrikvincent 0:05ccbd4f84f1 500 * lcp_sprotrej - Send a Protocol-Reject for some protocol.
hendrikvincent 0:05ccbd4f84f1 501 */
hendrikvincent 0:05ccbd4f84f1 502 void
hendrikvincent 0:05ccbd4f84f1 503 lcp_sprotrej(int unit, u_char *p, int len)
hendrikvincent 0:05ccbd4f84f1 504 {
hendrikvincent 0:05ccbd4f84f1 505 /*
hendrikvincent 0:05ccbd4f84f1 506 * Send back the protocol and the information field of the
hendrikvincent 0:05ccbd4f84f1 507 * rejected packet. We only get here if LCP is in the LS_OPENED state.
hendrikvincent 0:05ccbd4f84f1 508 */
hendrikvincent 0:05ccbd4f84f1 509
hendrikvincent 0:05ccbd4f84f1 510 fsm_sdata(&lcp_fsm[unit], PROTREJ, ++lcp_fsm[unit].id, p, len);
hendrikvincent 0:05ccbd4f84f1 511 }
hendrikvincent 0:05ccbd4f84f1 512
hendrikvincent 0:05ccbd4f84f1 513
hendrikvincent 0:05ccbd4f84f1 514 /*
hendrikvincent 0:05ccbd4f84f1 515 * lcp_resetci - Reset our CI.
hendrikvincent 0:05ccbd4f84f1 516 */
hendrikvincent 0:05ccbd4f84f1 517 static void
hendrikvincent 0:05ccbd4f84f1 518 lcp_resetci(fsm *f)
hendrikvincent 0:05ccbd4f84f1 519 {
hendrikvincent 0:05ccbd4f84f1 520 lcp_wantoptions[f->unit].magicnumber = magic();
hendrikvincent 0:05ccbd4f84f1 521 lcp_wantoptions[f->unit].numloops = 0;
hendrikvincent 0:05ccbd4f84f1 522 lcp_gotoptions[f->unit] = lcp_wantoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 523 peer_mru[f->unit] = PPP_MRU;
hendrikvincent 0:05ccbd4f84f1 524 auth_reset(f->unit);
hendrikvincent 0:05ccbd4f84f1 525 }
hendrikvincent 0:05ccbd4f84f1 526
hendrikvincent 0:05ccbd4f84f1 527
hendrikvincent 0:05ccbd4f84f1 528 /*
hendrikvincent 0:05ccbd4f84f1 529 * lcp_cilen - Return length of our CI.
hendrikvincent 0:05ccbd4f84f1 530 */
hendrikvincent 0:05ccbd4f84f1 531 static int
hendrikvincent 0:05ccbd4f84f1 532 lcp_cilen(fsm *f)
hendrikvincent 0:05ccbd4f84f1 533 {
hendrikvincent 0:05ccbd4f84f1 534 lcp_options *go = &lcp_gotoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 535
hendrikvincent 0:05ccbd4f84f1 536 #define LENCIVOID(neg) ((neg) ? CILEN_VOID : 0)
hendrikvincent 0:05ccbd4f84f1 537 #define LENCICHAP(neg) ((neg) ? CILEN_CHAP : 0)
hendrikvincent 0:05ccbd4f84f1 538 #define LENCISHORT(neg) ((neg) ? CILEN_SHORT : 0)
hendrikvincent 0:05ccbd4f84f1 539 #define LENCILONG(neg) ((neg) ? CILEN_LONG : 0)
hendrikvincent 0:05ccbd4f84f1 540 #define LENCILQR(neg) ((neg) ? CILEN_LQR: 0)
hendrikvincent 0:05ccbd4f84f1 541 #define LENCICBCP(neg) ((neg) ? CILEN_CBCP: 0)
hendrikvincent 0:05ccbd4f84f1 542 /*
hendrikvincent 0:05ccbd4f84f1 543 * NB: we only ask for one of CHAP and UPAP, even if we will
hendrikvincent 0:05ccbd4f84f1 544 * accept either.
hendrikvincent 0:05ccbd4f84f1 545 */
hendrikvincent 0:05ccbd4f84f1 546 return (LENCISHORT(go->neg_mru && go->mru != PPP_DEFMRU) +
hendrikvincent 0:05ccbd4f84f1 547 LENCILONG(go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) +
hendrikvincent 0:05ccbd4f84f1 548 LENCICHAP(go->neg_chap) +
hendrikvincent 0:05ccbd4f84f1 549 LENCISHORT(!go->neg_chap && go->neg_upap) +
hendrikvincent 0:05ccbd4f84f1 550 LENCILQR(go->neg_lqr) +
hendrikvincent 0:05ccbd4f84f1 551 LENCICBCP(go->neg_cbcp) +
hendrikvincent 0:05ccbd4f84f1 552 LENCILONG(go->neg_magicnumber) +
hendrikvincent 0:05ccbd4f84f1 553 LENCIVOID(go->neg_pcompression) +
hendrikvincent 0:05ccbd4f84f1 554 LENCIVOID(go->neg_accompression));
hendrikvincent 0:05ccbd4f84f1 555 }
hendrikvincent 0:05ccbd4f84f1 556
hendrikvincent 0:05ccbd4f84f1 557
hendrikvincent 0:05ccbd4f84f1 558 /*
hendrikvincent 0:05ccbd4f84f1 559 * lcp_addci - Add our desired CIs to a packet.
hendrikvincent 0:05ccbd4f84f1 560 */
hendrikvincent 0:05ccbd4f84f1 561 static void
hendrikvincent 0:05ccbd4f84f1 562 lcp_addci(fsm *f, u_char *ucp, int *lenp)
hendrikvincent 0:05ccbd4f84f1 563 {
hendrikvincent 0:05ccbd4f84f1 564 lcp_options *go = &lcp_gotoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 565 u_char *start_ucp = ucp;
hendrikvincent 0:05ccbd4f84f1 566
hendrikvincent 0:05ccbd4f84f1 567 #define ADDCIVOID(opt, neg) \
hendrikvincent 0:05ccbd4f84f1 568 if (neg) { \
hendrikvincent 0:05ccbd4f84f1 569 LCPDEBUG(LOG_INFO, ("lcp_addci: opt=%d\n", opt)); \
hendrikvincent 0:05ccbd4f84f1 570 PUTCHAR(opt, ucp); \
hendrikvincent 0:05ccbd4f84f1 571 PUTCHAR(CILEN_VOID, ucp); \
hendrikvincent 0:05ccbd4f84f1 572 }
hendrikvincent 0:05ccbd4f84f1 573 #define ADDCISHORT(opt, neg, val) \
hendrikvincent 0:05ccbd4f84f1 574 if (neg) { \
hendrikvincent 0:05ccbd4f84f1 575 LCPDEBUG(LOG_INFO, ("lcp_addci: INT opt=%d %X\n", opt, val)); \
hendrikvincent 0:05ccbd4f84f1 576 PUTCHAR(opt, ucp); \
hendrikvincent 0:05ccbd4f84f1 577 PUTCHAR(CILEN_SHORT, ucp); \
hendrikvincent 0:05ccbd4f84f1 578 PUTSHORT(val, ucp); \
hendrikvincent 0:05ccbd4f84f1 579 }
hendrikvincent 0:05ccbd4f84f1 580 #define ADDCICHAP(opt, neg, val, digest) \
hendrikvincent 0:05ccbd4f84f1 581 if (neg) { \
hendrikvincent 0:05ccbd4f84f1 582 LCPDEBUG(LOG_INFO, ("lcp_addci: CHAP opt=%d %X\n", opt, val)); \
hendrikvincent 0:05ccbd4f84f1 583 PUTCHAR(opt, ucp); \
hendrikvincent 0:05ccbd4f84f1 584 PUTCHAR(CILEN_CHAP, ucp); \
hendrikvincent 0:05ccbd4f84f1 585 PUTSHORT(val, ucp); \
hendrikvincent 0:05ccbd4f84f1 586 PUTCHAR(digest, ucp); \
hendrikvincent 0:05ccbd4f84f1 587 }
hendrikvincent 0:05ccbd4f84f1 588 #define ADDCILONG(opt, neg, val) \
hendrikvincent 0:05ccbd4f84f1 589 if (neg) { \
hendrikvincent 0:05ccbd4f84f1 590 LCPDEBUG(LOG_INFO, ("lcp_addci: L opt=%d %lX\n", opt, val)); \
hendrikvincent 0:05ccbd4f84f1 591 PUTCHAR(opt, ucp); \
hendrikvincent 0:05ccbd4f84f1 592 PUTCHAR(CILEN_LONG, ucp); \
hendrikvincent 0:05ccbd4f84f1 593 PUTLONG(val, ucp); \
hendrikvincent 0:05ccbd4f84f1 594 }
hendrikvincent 0:05ccbd4f84f1 595 #define ADDCILQR(opt, neg, val) \
hendrikvincent 0:05ccbd4f84f1 596 if (neg) { \
hendrikvincent 0:05ccbd4f84f1 597 LCPDEBUG(LOG_INFO, ("lcp_addci: LQR opt=%d %lX\n", opt, val)); \
hendrikvincent 0:05ccbd4f84f1 598 PUTCHAR(opt, ucp); \
hendrikvincent 0:05ccbd4f84f1 599 PUTCHAR(CILEN_LQR, ucp); \
hendrikvincent 0:05ccbd4f84f1 600 PUTSHORT(PPP_LQR, ucp); \
hendrikvincent 0:05ccbd4f84f1 601 PUTLONG(val, ucp); \
hendrikvincent 0:05ccbd4f84f1 602 }
hendrikvincent 0:05ccbd4f84f1 603 #define ADDCICHAR(opt, neg, val) \
hendrikvincent 0:05ccbd4f84f1 604 if (neg) { \
hendrikvincent 0:05ccbd4f84f1 605 LCPDEBUG(LOG_INFO, ("lcp_addci: CHAR opt=%d %X '%z'\n", opt, val, val)); \
hendrikvincent 0:05ccbd4f84f1 606 PUTCHAR(opt, ucp); \
hendrikvincent 0:05ccbd4f84f1 607 PUTCHAR(CILEN_CHAR, ucp); \
hendrikvincent 0:05ccbd4f84f1 608 PUTCHAR(val, ucp); \
hendrikvincent 0:05ccbd4f84f1 609 }
hendrikvincent 0:05ccbd4f84f1 610
hendrikvincent 0:05ccbd4f84f1 611 ADDCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru);
hendrikvincent 0:05ccbd4f84f1 612 ADDCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap);
hendrikvincent 0:05ccbd4f84f1 613 ADDCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype);
hendrikvincent 0:05ccbd4f84f1 614 ADDCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP);
hendrikvincent 0:05ccbd4f84f1 615 ADDCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period);
hendrikvincent 0:05ccbd4f84f1 616 ADDCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT);
hendrikvincent 0:05ccbd4f84f1 617 ADDCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber);
hendrikvincent 0:05ccbd4f84f1 618 ADDCIVOID(CI_PCOMPRESSION, go->neg_pcompression);
hendrikvincent 0:05ccbd4f84f1 619 ADDCIVOID(CI_ACCOMPRESSION, go->neg_accompression);
hendrikvincent 0:05ccbd4f84f1 620
hendrikvincent 0:05ccbd4f84f1 621 if (ucp - start_ucp != *lenp) {
hendrikvincent 0:05ccbd4f84f1 622 /* this should never happen, because peer_mtu should be 1500 */
hendrikvincent 0:05ccbd4f84f1 623 LCPDEBUG(LOG_ERR, ("Bug in lcp_addci: wrong length\n"));
hendrikvincent 0:05ccbd4f84f1 624 }
hendrikvincent 0:05ccbd4f84f1 625 }
hendrikvincent 0:05ccbd4f84f1 626
hendrikvincent 0:05ccbd4f84f1 627
hendrikvincent 0:05ccbd4f84f1 628 /*
hendrikvincent 0:05ccbd4f84f1 629 * lcp_ackci - Ack our CIs.
hendrikvincent 0:05ccbd4f84f1 630 * This should not modify any state if the Ack is bad.
hendrikvincent 0:05ccbd4f84f1 631 *
hendrikvincent 0:05ccbd4f84f1 632 * Returns:
hendrikvincent 0:05ccbd4f84f1 633 * 0 - Ack was bad.
hendrikvincent 0:05ccbd4f84f1 634 * 1 - Ack was good.
hendrikvincent 0:05ccbd4f84f1 635 */
hendrikvincent 0:05ccbd4f84f1 636 static int
hendrikvincent 0:05ccbd4f84f1 637 lcp_ackci(fsm *f, u_char *p, int len)
hendrikvincent 0:05ccbd4f84f1 638 {
hendrikvincent 0:05ccbd4f84f1 639 lcp_options *go = &lcp_gotoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 640 u_char cilen, citype, cichar;
hendrikvincent 0:05ccbd4f84f1 641 u_short cishort;
hendrikvincent 0:05ccbd4f84f1 642 u32_t cilong;
hendrikvincent 0:05ccbd4f84f1 643
hendrikvincent 0:05ccbd4f84f1 644 /*
hendrikvincent 0:05ccbd4f84f1 645 * CIs must be in exactly the same order that we sent.
hendrikvincent 0:05ccbd4f84f1 646 * Check packet length and CI length at each step.
hendrikvincent 0:05ccbd4f84f1 647 * If we find any deviations, then this packet is bad.
hendrikvincent 0:05ccbd4f84f1 648 */
hendrikvincent 0:05ccbd4f84f1 649 #define ACKCIVOID(opt, neg) \
hendrikvincent 0:05ccbd4f84f1 650 if (neg) { \
hendrikvincent 0:05ccbd4f84f1 651 if ((len -= CILEN_VOID) < 0) \
hendrikvincent 0:05ccbd4f84f1 652 goto bad; \
hendrikvincent 0:05ccbd4f84f1 653 GETCHAR(citype, p); \
hendrikvincent 0:05ccbd4f84f1 654 GETCHAR(cilen, p); \
hendrikvincent 0:05ccbd4f84f1 655 if (cilen != CILEN_VOID || citype != opt) \
hendrikvincent 0:05ccbd4f84f1 656 goto bad; \
hendrikvincent 0:05ccbd4f84f1 657 }
hendrikvincent 0:05ccbd4f84f1 658 #define ACKCISHORT(opt, neg, val) \
hendrikvincent 0:05ccbd4f84f1 659 if (neg) { \
hendrikvincent 0:05ccbd4f84f1 660 if ((len -= CILEN_SHORT) < 0) \
hendrikvincent 0:05ccbd4f84f1 661 goto bad; \
hendrikvincent 0:05ccbd4f84f1 662 GETCHAR(citype, p); \
hendrikvincent 0:05ccbd4f84f1 663 GETCHAR(cilen, p); \
hendrikvincent 0:05ccbd4f84f1 664 if (cilen != CILEN_SHORT || citype != opt) \
hendrikvincent 0:05ccbd4f84f1 665 goto bad; \
hendrikvincent 0:05ccbd4f84f1 666 GETSHORT(cishort, p); \
hendrikvincent 0:05ccbd4f84f1 667 if (cishort != val) \
hendrikvincent 0:05ccbd4f84f1 668 goto bad; \
hendrikvincent 0:05ccbd4f84f1 669 }
hendrikvincent 0:05ccbd4f84f1 670 #define ACKCICHAR(opt, neg, val) \
hendrikvincent 0:05ccbd4f84f1 671 if (neg) { \
hendrikvincent 0:05ccbd4f84f1 672 if ((len -= CILEN_CHAR) < 0) \
hendrikvincent 0:05ccbd4f84f1 673 goto bad; \
hendrikvincent 0:05ccbd4f84f1 674 GETCHAR(citype, p); \
hendrikvincent 0:05ccbd4f84f1 675 GETCHAR(cilen, p); \
hendrikvincent 0:05ccbd4f84f1 676 if (cilen != CILEN_CHAR || citype != opt) \
hendrikvincent 0:05ccbd4f84f1 677 goto bad; \
hendrikvincent 0:05ccbd4f84f1 678 GETCHAR(cichar, p); \
hendrikvincent 0:05ccbd4f84f1 679 if (cichar != val) \
hendrikvincent 0:05ccbd4f84f1 680 goto bad; \
hendrikvincent 0:05ccbd4f84f1 681 }
hendrikvincent 0:05ccbd4f84f1 682 #define ACKCICHAP(opt, neg, val, digest) \
hendrikvincent 0:05ccbd4f84f1 683 if (neg) { \
hendrikvincent 0:05ccbd4f84f1 684 if ((len -= CILEN_CHAP) < 0) \
hendrikvincent 0:05ccbd4f84f1 685 goto bad; \
hendrikvincent 0:05ccbd4f84f1 686 GETCHAR(citype, p); \
hendrikvincent 0:05ccbd4f84f1 687 GETCHAR(cilen, p); \
hendrikvincent 0:05ccbd4f84f1 688 if (cilen != CILEN_CHAP || citype != opt) \
hendrikvincent 0:05ccbd4f84f1 689 goto bad; \
hendrikvincent 0:05ccbd4f84f1 690 GETSHORT(cishort, p); \
hendrikvincent 0:05ccbd4f84f1 691 if (cishort != val) \
hendrikvincent 0:05ccbd4f84f1 692 goto bad; \
hendrikvincent 0:05ccbd4f84f1 693 GETCHAR(cichar, p); \
hendrikvincent 0:05ccbd4f84f1 694 if (cichar != digest) \
hendrikvincent 0:05ccbd4f84f1 695 goto bad; \
hendrikvincent 0:05ccbd4f84f1 696 }
hendrikvincent 0:05ccbd4f84f1 697 #define ACKCILONG(opt, neg, val) \
hendrikvincent 0:05ccbd4f84f1 698 if (neg) { \
hendrikvincent 0:05ccbd4f84f1 699 if ((len -= CILEN_LONG) < 0) \
hendrikvincent 0:05ccbd4f84f1 700 goto bad; \
hendrikvincent 0:05ccbd4f84f1 701 GETCHAR(citype, p); \
hendrikvincent 0:05ccbd4f84f1 702 GETCHAR(cilen, p); \
hendrikvincent 0:05ccbd4f84f1 703 if (cilen != CILEN_LONG || citype != opt) \
hendrikvincent 0:05ccbd4f84f1 704 goto bad; \
hendrikvincent 0:05ccbd4f84f1 705 GETLONG(cilong, p); \
hendrikvincent 0:05ccbd4f84f1 706 if (cilong != val) \
hendrikvincent 0:05ccbd4f84f1 707 goto bad; \
hendrikvincent 0:05ccbd4f84f1 708 }
hendrikvincent 0:05ccbd4f84f1 709 #define ACKCILQR(opt, neg, val) \
hendrikvincent 0:05ccbd4f84f1 710 if (neg) { \
hendrikvincent 0:05ccbd4f84f1 711 if ((len -= CILEN_LQR) < 0) \
hendrikvincent 0:05ccbd4f84f1 712 goto bad; \
hendrikvincent 0:05ccbd4f84f1 713 GETCHAR(citype, p); \
hendrikvincent 0:05ccbd4f84f1 714 GETCHAR(cilen, p); \
hendrikvincent 0:05ccbd4f84f1 715 if (cilen != CILEN_LQR || citype != opt) \
hendrikvincent 0:05ccbd4f84f1 716 goto bad; \
hendrikvincent 0:05ccbd4f84f1 717 GETSHORT(cishort, p); \
hendrikvincent 0:05ccbd4f84f1 718 if (cishort != PPP_LQR) \
hendrikvincent 0:05ccbd4f84f1 719 goto bad; \
hendrikvincent 0:05ccbd4f84f1 720 GETLONG(cilong, p); \
hendrikvincent 0:05ccbd4f84f1 721 if (cilong != val) \
hendrikvincent 0:05ccbd4f84f1 722 goto bad; \
hendrikvincent 0:05ccbd4f84f1 723 }
hendrikvincent 0:05ccbd4f84f1 724
hendrikvincent 0:05ccbd4f84f1 725 ACKCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru);
hendrikvincent 0:05ccbd4f84f1 726 ACKCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap);
hendrikvincent 0:05ccbd4f84f1 727 ACKCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype);
hendrikvincent 0:05ccbd4f84f1 728 ACKCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP);
hendrikvincent 0:05ccbd4f84f1 729 ACKCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period);
hendrikvincent 0:05ccbd4f84f1 730 ACKCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT);
hendrikvincent 0:05ccbd4f84f1 731 ACKCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber);
hendrikvincent 0:05ccbd4f84f1 732 ACKCIVOID(CI_PCOMPRESSION, go->neg_pcompression);
hendrikvincent 0:05ccbd4f84f1 733 ACKCIVOID(CI_ACCOMPRESSION, go->neg_accompression);
hendrikvincent 0:05ccbd4f84f1 734
hendrikvincent 0:05ccbd4f84f1 735 /*
hendrikvincent 0:05ccbd4f84f1 736 * If there are any remaining CIs, then this packet is bad.
hendrikvincent 0:05ccbd4f84f1 737 */
hendrikvincent 0:05ccbd4f84f1 738 if (len != 0) {
hendrikvincent 0:05ccbd4f84f1 739 goto bad;
hendrikvincent 0:05ccbd4f84f1 740 }
hendrikvincent 0:05ccbd4f84f1 741 LCPDEBUG(LOG_INFO, ("lcp_acki: Ack\n"));
hendrikvincent 0:05ccbd4f84f1 742 return (1);
hendrikvincent 0:05ccbd4f84f1 743 bad:
hendrikvincent 0:05ccbd4f84f1 744 LCPDEBUG(LOG_WARNING, ("lcp_acki: received bad Ack!\n"));
hendrikvincent 0:05ccbd4f84f1 745 return (0);
hendrikvincent 0:05ccbd4f84f1 746 }
hendrikvincent 0:05ccbd4f84f1 747
hendrikvincent 0:05ccbd4f84f1 748
hendrikvincent 0:05ccbd4f84f1 749 /*
hendrikvincent 0:05ccbd4f84f1 750 * lcp_nakci - Peer has sent a NAK for some of our CIs.
hendrikvincent 0:05ccbd4f84f1 751 * This should not modify any state if the Nak is bad
hendrikvincent 0:05ccbd4f84f1 752 * or if LCP is in the LS_OPENED state.
hendrikvincent 0:05ccbd4f84f1 753 *
hendrikvincent 0:05ccbd4f84f1 754 * Returns:
hendrikvincent 0:05ccbd4f84f1 755 * 0 - Nak was bad.
hendrikvincent 0:05ccbd4f84f1 756 * 1 - Nak was good.
hendrikvincent 0:05ccbd4f84f1 757 */
hendrikvincent 0:05ccbd4f84f1 758 static int
hendrikvincent 0:05ccbd4f84f1 759 lcp_nakci(fsm *f, u_char *p, int len)
hendrikvincent 0:05ccbd4f84f1 760 {
hendrikvincent 0:05ccbd4f84f1 761 lcp_options *go = &lcp_gotoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 762 lcp_options *wo = &lcp_wantoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 763 u_char citype, cichar, *next;
hendrikvincent 0:05ccbd4f84f1 764 u_short cishort;
hendrikvincent 0:05ccbd4f84f1 765 u32_t cilong;
hendrikvincent 0:05ccbd4f84f1 766 lcp_options no; /* options we've seen Naks for */
hendrikvincent 0:05ccbd4f84f1 767 lcp_options try; /* options to request next time */
hendrikvincent 0:05ccbd4f84f1 768 int looped_back = 0;
hendrikvincent 0:05ccbd4f84f1 769 int cilen;
hendrikvincent 0:05ccbd4f84f1 770
hendrikvincent 0:05ccbd4f84f1 771 BZERO(&no, sizeof(no));
hendrikvincent 0:05ccbd4f84f1 772 try = *go;
hendrikvincent 0:05ccbd4f84f1 773
hendrikvincent 0:05ccbd4f84f1 774 /*
hendrikvincent 0:05ccbd4f84f1 775 * Any Nak'd CIs must be in exactly the same order that we sent.
hendrikvincent 0:05ccbd4f84f1 776 * Check packet length and CI length at each step.
hendrikvincent 0:05ccbd4f84f1 777 * If we find any deviations, then this packet is bad.
hendrikvincent 0:05ccbd4f84f1 778 */
hendrikvincent 0:05ccbd4f84f1 779 #define NAKCIVOID(opt, neg, code) \
hendrikvincent 0:05ccbd4f84f1 780 if (go->neg && \
hendrikvincent 0:05ccbd4f84f1 781 len >= CILEN_VOID && \
hendrikvincent 0:05ccbd4f84f1 782 p[1] == CILEN_VOID && \
hendrikvincent 0:05ccbd4f84f1 783 p[0] == opt) { \
hendrikvincent 0:05ccbd4f84f1 784 len -= CILEN_VOID; \
hendrikvincent 0:05ccbd4f84f1 785 INCPTR(CILEN_VOID, p); \
hendrikvincent 0:05ccbd4f84f1 786 no.neg = 1; \
hendrikvincent 0:05ccbd4f84f1 787 code \
hendrikvincent 0:05ccbd4f84f1 788 }
hendrikvincent 0:05ccbd4f84f1 789 #define NAKCICHAP(opt, neg, code) \
hendrikvincent 0:05ccbd4f84f1 790 if (go->neg && \
hendrikvincent 0:05ccbd4f84f1 791 len >= CILEN_CHAP && \
hendrikvincent 0:05ccbd4f84f1 792 p[1] == CILEN_CHAP && \
hendrikvincent 0:05ccbd4f84f1 793 p[0] == opt) { \
hendrikvincent 0:05ccbd4f84f1 794 len -= CILEN_CHAP; \
hendrikvincent 0:05ccbd4f84f1 795 INCPTR(2, p); \
hendrikvincent 0:05ccbd4f84f1 796 GETSHORT(cishort, p); \
hendrikvincent 0:05ccbd4f84f1 797 GETCHAR(cichar, p); \
hendrikvincent 0:05ccbd4f84f1 798 no.neg = 1; \
hendrikvincent 0:05ccbd4f84f1 799 code \
hendrikvincent 0:05ccbd4f84f1 800 }
hendrikvincent 0:05ccbd4f84f1 801 #define NAKCICHAR(opt, neg, code) \
hendrikvincent 0:05ccbd4f84f1 802 if (go->neg && \
hendrikvincent 0:05ccbd4f84f1 803 len >= CILEN_CHAR && \
hendrikvincent 0:05ccbd4f84f1 804 p[1] == CILEN_CHAR && \
hendrikvincent 0:05ccbd4f84f1 805 p[0] == opt) { \
hendrikvincent 0:05ccbd4f84f1 806 len -= CILEN_CHAR; \
hendrikvincent 0:05ccbd4f84f1 807 INCPTR(2, p); \
hendrikvincent 0:05ccbd4f84f1 808 GETCHAR(cichar, p); \
hendrikvincent 0:05ccbd4f84f1 809 no.neg = 1; \
hendrikvincent 0:05ccbd4f84f1 810 code \
hendrikvincent 0:05ccbd4f84f1 811 }
hendrikvincent 0:05ccbd4f84f1 812 #define NAKCISHORT(opt, neg, code) \
hendrikvincent 0:05ccbd4f84f1 813 if (go->neg && \
hendrikvincent 0:05ccbd4f84f1 814 len >= CILEN_SHORT && \
hendrikvincent 0:05ccbd4f84f1 815 p[1] == CILEN_SHORT && \
hendrikvincent 0:05ccbd4f84f1 816 p[0] == opt) { \
hendrikvincent 0:05ccbd4f84f1 817 len -= CILEN_SHORT; \
hendrikvincent 0:05ccbd4f84f1 818 INCPTR(2, p); \
hendrikvincent 0:05ccbd4f84f1 819 GETSHORT(cishort, p); \
hendrikvincent 0:05ccbd4f84f1 820 no.neg = 1; \
hendrikvincent 0:05ccbd4f84f1 821 code \
hendrikvincent 0:05ccbd4f84f1 822 }
hendrikvincent 0:05ccbd4f84f1 823 #define NAKCILONG(opt, neg, code) \
hendrikvincent 0:05ccbd4f84f1 824 if (go->neg && \
hendrikvincent 0:05ccbd4f84f1 825 len >= CILEN_LONG && \
hendrikvincent 0:05ccbd4f84f1 826 p[1] == CILEN_LONG && \
hendrikvincent 0:05ccbd4f84f1 827 p[0] == opt) { \
hendrikvincent 0:05ccbd4f84f1 828 len -= CILEN_LONG; \
hendrikvincent 0:05ccbd4f84f1 829 INCPTR(2, p); \
hendrikvincent 0:05ccbd4f84f1 830 GETLONG(cilong, p); \
hendrikvincent 0:05ccbd4f84f1 831 no.neg = 1; \
hendrikvincent 0:05ccbd4f84f1 832 code \
hendrikvincent 0:05ccbd4f84f1 833 }
hendrikvincent 0:05ccbd4f84f1 834 #define NAKCILQR(opt, neg, code) \
hendrikvincent 0:05ccbd4f84f1 835 if (go->neg && \
hendrikvincent 0:05ccbd4f84f1 836 len >= CILEN_LQR && \
hendrikvincent 0:05ccbd4f84f1 837 p[1] == CILEN_LQR && \
hendrikvincent 0:05ccbd4f84f1 838 p[0] == opt) { \
hendrikvincent 0:05ccbd4f84f1 839 len -= CILEN_LQR; \
hendrikvincent 0:05ccbd4f84f1 840 INCPTR(2, p); \
hendrikvincent 0:05ccbd4f84f1 841 GETSHORT(cishort, p); \
hendrikvincent 0:05ccbd4f84f1 842 GETLONG(cilong, p); \
hendrikvincent 0:05ccbd4f84f1 843 no.neg = 1; \
hendrikvincent 0:05ccbd4f84f1 844 code \
hendrikvincent 0:05ccbd4f84f1 845 }
hendrikvincent 0:05ccbd4f84f1 846
hendrikvincent 0:05ccbd4f84f1 847 /*
hendrikvincent 0:05ccbd4f84f1 848 * We don't care if they want to send us smaller packets than
hendrikvincent 0:05ccbd4f84f1 849 * we want. Therefore, accept any MRU less than what we asked for,
hendrikvincent 0:05ccbd4f84f1 850 * but then ignore the new value when setting the MRU in the kernel.
hendrikvincent 0:05ccbd4f84f1 851 * If they send us a bigger MRU than what we asked, accept it, up to
hendrikvincent 0:05ccbd4f84f1 852 * the limit of the default MRU we'd get if we didn't negotiate.
hendrikvincent 0:05ccbd4f84f1 853 */
hendrikvincent 0:05ccbd4f84f1 854 if (go->neg_mru && go->mru != PPP_DEFMRU) {
hendrikvincent 0:05ccbd4f84f1 855 NAKCISHORT(CI_MRU, neg_mru,
hendrikvincent 0:05ccbd4f84f1 856 if (cishort <= wo->mru || cishort < PPP_DEFMRU) {
hendrikvincent 0:05ccbd4f84f1 857 try.mru = cishort;
hendrikvincent 0:05ccbd4f84f1 858 }
hendrikvincent 0:05ccbd4f84f1 859 );
hendrikvincent 0:05ccbd4f84f1 860 }
hendrikvincent 0:05ccbd4f84f1 861
hendrikvincent 0:05ccbd4f84f1 862 /*
hendrikvincent 0:05ccbd4f84f1 863 * Add any characters they want to our (receive-side) asyncmap.
hendrikvincent 0:05ccbd4f84f1 864 */
hendrikvincent 0:05ccbd4f84f1 865 if (go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) {
hendrikvincent 0:05ccbd4f84f1 866 NAKCILONG(CI_ASYNCMAP, neg_asyncmap,
hendrikvincent 0:05ccbd4f84f1 867 try.asyncmap = go->asyncmap | cilong;
hendrikvincent 0:05ccbd4f84f1 868 );
hendrikvincent 0:05ccbd4f84f1 869 }
hendrikvincent 0:05ccbd4f84f1 870
hendrikvincent 0:05ccbd4f84f1 871 /*
hendrikvincent 0:05ccbd4f84f1 872 * If they've nak'd our authentication-protocol, check whether
hendrikvincent 0:05ccbd4f84f1 873 * they are proposing a different protocol, or a different
hendrikvincent 0:05ccbd4f84f1 874 * hash algorithm for CHAP.
hendrikvincent 0:05ccbd4f84f1 875 */
hendrikvincent 0:05ccbd4f84f1 876 if ((go->neg_chap || go->neg_upap)
hendrikvincent 0:05ccbd4f84f1 877 && len >= CILEN_SHORT
hendrikvincent 0:05ccbd4f84f1 878 && p[0] == CI_AUTHTYPE && p[1] >= CILEN_SHORT && p[1] <= len) {
hendrikvincent 0:05ccbd4f84f1 879 cilen = p[1];
hendrikvincent 0:05ccbd4f84f1 880 len -= cilen;
hendrikvincent 0:05ccbd4f84f1 881 no.neg_chap = go->neg_chap;
hendrikvincent 0:05ccbd4f84f1 882 no.neg_upap = go->neg_upap;
hendrikvincent 0:05ccbd4f84f1 883 INCPTR(2, p);
hendrikvincent 0:05ccbd4f84f1 884 GETSHORT(cishort, p);
hendrikvincent 0:05ccbd4f84f1 885 if (cishort == PPP_PAP && cilen == CILEN_SHORT) {
hendrikvincent 0:05ccbd4f84f1 886 /*
hendrikvincent 0:05ccbd4f84f1 887 * If we were asking for CHAP, they obviously don't want to do it.
hendrikvincent 0:05ccbd4f84f1 888 * If we weren't asking for CHAP, then we were asking for PAP,
hendrikvincent 0:05ccbd4f84f1 889 * in which case this Nak is bad.
hendrikvincent 0:05ccbd4f84f1 890 */
hendrikvincent 0:05ccbd4f84f1 891 if (!go->neg_chap) {
hendrikvincent 0:05ccbd4f84f1 892 goto bad;
hendrikvincent 0:05ccbd4f84f1 893 }
hendrikvincent 0:05ccbd4f84f1 894 try.neg_chap = 0;
hendrikvincent 0:05ccbd4f84f1 895
hendrikvincent 0:05ccbd4f84f1 896 } else if (cishort == PPP_CHAP && cilen == CILEN_CHAP) {
hendrikvincent 0:05ccbd4f84f1 897 GETCHAR(cichar, p);
hendrikvincent 0:05ccbd4f84f1 898 if (go->neg_chap) {
hendrikvincent 0:05ccbd4f84f1 899 /*
hendrikvincent 0:05ccbd4f84f1 900 * We were asking for CHAP/MD5; they must want a different
hendrikvincent 0:05ccbd4f84f1 901 * algorithm. If they can't do MD5, we'll have to stop
hendrikvincent 0:05ccbd4f84f1 902 * asking for CHAP.
hendrikvincent 0:05ccbd4f84f1 903 */
hendrikvincent 0:05ccbd4f84f1 904 if (cichar != go->chap_mdtype) {
hendrikvincent 0:05ccbd4f84f1 905 try.neg_chap = 0;
hendrikvincent 0:05ccbd4f84f1 906 }
hendrikvincent 0:05ccbd4f84f1 907 } else {
hendrikvincent 0:05ccbd4f84f1 908 /*
hendrikvincent 0:05ccbd4f84f1 909 * Stop asking for PAP if we were asking for it.
hendrikvincent 0:05ccbd4f84f1 910 */
hendrikvincent 0:05ccbd4f84f1 911 try.neg_upap = 0;
hendrikvincent 0:05ccbd4f84f1 912 }
hendrikvincent 0:05ccbd4f84f1 913
hendrikvincent 0:05ccbd4f84f1 914 } else {
hendrikvincent 0:05ccbd4f84f1 915 /*
hendrikvincent 0:05ccbd4f84f1 916 * We don't recognize what they're suggesting.
hendrikvincent 0:05ccbd4f84f1 917 * Stop asking for what we were asking for.
hendrikvincent 0:05ccbd4f84f1 918 */
hendrikvincent 0:05ccbd4f84f1 919 if (go->neg_chap) {
hendrikvincent 0:05ccbd4f84f1 920 try.neg_chap = 0;
hendrikvincent 0:05ccbd4f84f1 921 } else {
hendrikvincent 0:05ccbd4f84f1 922 try.neg_upap = 0;
hendrikvincent 0:05ccbd4f84f1 923 }
hendrikvincent 0:05ccbd4f84f1 924 p += cilen - CILEN_SHORT;
hendrikvincent 0:05ccbd4f84f1 925 }
hendrikvincent 0:05ccbd4f84f1 926 }
hendrikvincent 0:05ccbd4f84f1 927
hendrikvincent 0:05ccbd4f84f1 928 /*
hendrikvincent 0:05ccbd4f84f1 929 * If they can't cope with our link quality protocol, we'll have
hendrikvincent 0:05ccbd4f84f1 930 * to stop asking for LQR. We haven't got any other protocol.
hendrikvincent 0:05ccbd4f84f1 931 * If they Nak the reporting period, take their value XXX ?
hendrikvincent 0:05ccbd4f84f1 932 */
hendrikvincent 0:05ccbd4f84f1 933 NAKCILQR(CI_QUALITY, neg_lqr,
hendrikvincent 0:05ccbd4f84f1 934 if (cishort != PPP_LQR) {
hendrikvincent 0:05ccbd4f84f1 935 try.neg_lqr = 0;
hendrikvincent 0:05ccbd4f84f1 936 } else {
hendrikvincent 0:05ccbd4f84f1 937 try.lqr_period = cilong;
hendrikvincent 0:05ccbd4f84f1 938 }
hendrikvincent 0:05ccbd4f84f1 939 );
hendrikvincent 0:05ccbd4f84f1 940
hendrikvincent 0:05ccbd4f84f1 941 /*
hendrikvincent 0:05ccbd4f84f1 942 * Only implementing CBCP...not the rest of the callback options
hendrikvincent 0:05ccbd4f84f1 943 */
hendrikvincent 0:05ccbd4f84f1 944 NAKCICHAR(CI_CALLBACK, neg_cbcp,
hendrikvincent 0:05ccbd4f84f1 945 try.neg_cbcp = 0;
hendrikvincent 0:05ccbd4f84f1 946 );
hendrikvincent 0:05ccbd4f84f1 947
hendrikvincent 0:05ccbd4f84f1 948 /*
hendrikvincent 0:05ccbd4f84f1 949 * Check for a looped-back line.
hendrikvincent 0:05ccbd4f84f1 950 */
hendrikvincent 0:05ccbd4f84f1 951 NAKCILONG(CI_MAGICNUMBER, neg_magicnumber,
hendrikvincent 0:05ccbd4f84f1 952 try.magicnumber = magic();
hendrikvincent 0:05ccbd4f84f1 953 looped_back = 1;
hendrikvincent 0:05ccbd4f84f1 954 );
hendrikvincent 0:05ccbd4f84f1 955
hendrikvincent 0:05ccbd4f84f1 956 /*
hendrikvincent 0:05ccbd4f84f1 957 * Peer shouldn't send Nak for protocol compression or
hendrikvincent 0:05ccbd4f84f1 958 * address/control compression requests; they should send
hendrikvincent 0:05ccbd4f84f1 959 * a Reject instead. If they send a Nak, treat it as a Reject.
hendrikvincent 0:05ccbd4f84f1 960 */
hendrikvincent 0:05ccbd4f84f1 961 NAKCIVOID(CI_PCOMPRESSION, neg_pcompression,
hendrikvincent 0:05ccbd4f84f1 962 try.neg_pcompression = 0;
hendrikvincent 0:05ccbd4f84f1 963 );
hendrikvincent 0:05ccbd4f84f1 964 NAKCIVOID(CI_ACCOMPRESSION, neg_accompression,
hendrikvincent 0:05ccbd4f84f1 965 try.neg_accompression = 0;
hendrikvincent 0:05ccbd4f84f1 966 );
hendrikvincent 0:05ccbd4f84f1 967
hendrikvincent 0:05ccbd4f84f1 968 /*
hendrikvincent 0:05ccbd4f84f1 969 * There may be remaining CIs, if the peer is requesting negotiation
hendrikvincent 0:05ccbd4f84f1 970 * on an option that we didn't include in our request packet.
hendrikvincent 0:05ccbd4f84f1 971 * If we see an option that we requested, or one we've already seen
hendrikvincent 0:05ccbd4f84f1 972 * in this packet, then this packet is bad.
hendrikvincent 0:05ccbd4f84f1 973 * If we wanted to respond by starting to negotiate on the requested
hendrikvincent 0:05ccbd4f84f1 974 * option(s), we could, but we don't, because except for the
hendrikvincent 0:05ccbd4f84f1 975 * authentication type and quality protocol, if we are not negotiating
hendrikvincent 0:05ccbd4f84f1 976 * an option, it is because we were told not to.
hendrikvincent 0:05ccbd4f84f1 977 * For the authentication type, the Nak from the peer means
hendrikvincent 0:05ccbd4f84f1 978 * `let me authenticate myself with you' which is a bit pointless.
hendrikvincent 0:05ccbd4f84f1 979 * For the quality protocol, the Nak means `ask me to send you quality
hendrikvincent 0:05ccbd4f84f1 980 * reports', but if we didn't ask for them, we don't want them.
hendrikvincent 0:05ccbd4f84f1 981 * An option we don't recognize represents the peer asking to
hendrikvincent 0:05ccbd4f84f1 982 * negotiate some option we don't support, so ignore it.
hendrikvincent 0:05ccbd4f84f1 983 */
hendrikvincent 0:05ccbd4f84f1 984 while (len > CILEN_VOID) {
hendrikvincent 0:05ccbd4f84f1 985 GETCHAR(citype, p);
hendrikvincent 0:05ccbd4f84f1 986 GETCHAR(cilen, p);
hendrikvincent 0:05ccbd4f84f1 987 if (cilen < CILEN_VOID || (len -= cilen) < 0) {
hendrikvincent 0:05ccbd4f84f1 988 goto bad;
hendrikvincent 0:05ccbd4f84f1 989 }
hendrikvincent 0:05ccbd4f84f1 990 next = p + cilen - 2;
hendrikvincent 0:05ccbd4f84f1 991
hendrikvincent 0:05ccbd4f84f1 992 switch (citype) {
hendrikvincent 0:05ccbd4f84f1 993 case CI_MRU:
hendrikvincent 0:05ccbd4f84f1 994 if ((go->neg_mru && go->mru != PPP_DEFMRU)
hendrikvincent 0:05ccbd4f84f1 995 || no.neg_mru || cilen != CILEN_SHORT) {
hendrikvincent 0:05ccbd4f84f1 996 goto bad;
hendrikvincent 0:05ccbd4f84f1 997 }
hendrikvincent 0:05ccbd4f84f1 998 GETSHORT(cishort, p);
hendrikvincent 0:05ccbd4f84f1 999 if (cishort < PPP_DEFMRU) {
hendrikvincent 0:05ccbd4f84f1 1000 try.mru = cishort;
hendrikvincent 0:05ccbd4f84f1 1001 }
hendrikvincent 0:05ccbd4f84f1 1002 break;
hendrikvincent 0:05ccbd4f84f1 1003 case CI_ASYNCMAP:
hendrikvincent 0:05ccbd4f84f1 1004 if ((go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl)
hendrikvincent 0:05ccbd4f84f1 1005 || no.neg_asyncmap || cilen != CILEN_LONG) {
hendrikvincent 0:05ccbd4f84f1 1006 goto bad;
hendrikvincent 0:05ccbd4f84f1 1007 }
hendrikvincent 0:05ccbd4f84f1 1008 break;
hendrikvincent 0:05ccbd4f84f1 1009 case CI_AUTHTYPE:
hendrikvincent 0:05ccbd4f84f1 1010 if (go->neg_chap || no.neg_chap || go->neg_upap || no.neg_upap) {
hendrikvincent 0:05ccbd4f84f1 1011 goto bad;
hendrikvincent 0:05ccbd4f84f1 1012 }
hendrikvincent 0:05ccbd4f84f1 1013 break;
hendrikvincent 0:05ccbd4f84f1 1014 case CI_MAGICNUMBER:
hendrikvincent 0:05ccbd4f84f1 1015 if (go->neg_magicnumber || no.neg_magicnumber ||
hendrikvincent 0:05ccbd4f84f1 1016 cilen != CILEN_LONG) {
hendrikvincent 0:05ccbd4f84f1 1017 goto bad;
hendrikvincent 0:05ccbd4f84f1 1018 }
hendrikvincent 0:05ccbd4f84f1 1019 break;
hendrikvincent 0:05ccbd4f84f1 1020 case CI_PCOMPRESSION:
hendrikvincent 0:05ccbd4f84f1 1021 if (go->neg_pcompression || no.neg_pcompression
hendrikvincent 0:05ccbd4f84f1 1022 || cilen != CILEN_VOID) {
hendrikvincent 0:05ccbd4f84f1 1023 goto bad;
hendrikvincent 0:05ccbd4f84f1 1024 }
hendrikvincent 0:05ccbd4f84f1 1025 break;
hendrikvincent 0:05ccbd4f84f1 1026 case CI_ACCOMPRESSION:
hendrikvincent 0:05ccbd4f84f1 1027 if (go->neg_accompression || no.neg_accompression
hendrikvincent 0:05ccbd4f84f1 1028 || cilen != CILEN_VOID) {
hendrikvincent 0:05ccbd4f84f1 1029 goto bad;
hendrikvincent 0:05ccbd4f84f1 1030 }
hendrikvincent 0:05ccbd4f84f1 1031 break;
hendrikvincent 0:05ccbd4f84f1 1032 case CI_QUALITY:
hendrikvincent 0:05ccbd4f84f1 1033 if (go->neg_lqr || no.neg_lqr || cilen != CILEN_LQR) {
hendrikvincent 0:05ccbd4f84f1 1034 goto bad;
hendrikvincent 0:05ccbd4f84f1 1035 }
hendrikvincent 0:05ccbd4f84f1 1036 break;
hendrikvincent 0:05ccbd4f84f1 1037 }
hendrikvincent 0:05ccbd4f84f1 1038 p = next;
hendrikvincent 0:05ccbd4f84f1 1039 }
hendrikvincent 0:05ccbd4f84f1 1040
hendrikvincent 0:05ccbd4f84f1 1041 /* If there is still anything left, this packet is bad. */
hendrikvincent 0:05ccbd4f84f1 1042 if (len != 0) {
hendrikvincent 0:05ccbd4f84f1 1043 goto bad;
hendrikvincent 0:05ccbd4f84f1 1044 }
hendrikvincent 0:05ccbd4f84f1 1045
hendrikvincent 0:05ccbd4f84f1 1046 /*
hendrikvincent 0:05ccbd4f84f1 1047 * OK, the Nak is good. Now we can update state.
hendrikvincent 0:05ccbd4f84f1 1048 */
hendrikvincent 0:05ccbd4f84f1 1049 if (f->state != LS_OPENED) {
hendrikvincent 0:05ccbd4f84f1 1050 if (looped_back) {
hendrikvincent 0:05ccbd4f84f1 1051 if (++try.numloops >= lcp_loopbackfail) {
hendrikvincent 0:05ccbd4f84f1 1052 LCPDEBUG(LOG_NOTICE, ("Serial line is looped back.\n"));
hendrikvincent 0:05ccbd4f84f1 1053 lcp_close(f->unit, "Loopback detected");
hendrikvincent 0:05ccbd4f84f1 1054 }
hendrikvincent 0:05ccbd4f84f1 1055 } else {
hendrikvincent 0:05ccbd4f84f1 1056 try.numloops = 0;
hendrikvincent 0:05ccbd4f84f1 1057 }
hendrikvincent 0:05ccbd4f84f1 1058 *go = try;
hendrikvincent 0:05ccbd4f84f1 1059 }
hendrikvincent 0:05ccbd4f84f1 1060
hendrikvincent 0:05ccbd4f84f1 1061 return 1;
hendrikvincent 0:05ccbd4f84f1 1062
hendrikvincent 0:05ccbd4f84f1 1063 bad:
hendrikvincent 0:05ccbd4f84f1 1064 LCPDEBUG(LOG_WARNING, ("lcp_nakci: received bad Nak!\n"));
hendrikvincent 0:05ccbd4f84f1 1065 return 0;
hendrikvincent 0:05ccbd4f84f1 1066 }
hendrikvincent 0:05ccbd4f84f1 1067
hendrikvincent 0:05ccbd4f84f1 1068
hendrikvincent 0:05ccbd4f84f1 1069 /*
hendrikvincent 0:05ccbd4f84f1 1070 * lcp_rejci - Peer has Rejected some of our CIs.
hendrikvincent 0:05ccbd4f84f1 1071 * This should not modify any state if the Reject is bad
hendrikvincent 0:05ccbd4f84f1 1072 * or if LCP is in the LS_OPENED state.
hendrikvincent 0:05ccbd4f84f1 1073 *
hendrikvincent 0:05ccbd4f84f1 1074 * Returns:
hendrikvincent 0:05ccbd4f84f1 1075 * 0 - Reject was bad.
hendrikvincent 0:05ccbd4f84f1 1076 * 1 - Reject was good.
hendrikvincent 0:05ccbd4f84f1 1077 */
hendrikvincent 0:05ccbd4f84f1 1078 static int
hendrikvincent 0:05ccbd4f84f1 1079 lcp_rejci(fsm *f, u_char *p, int len)
hendrikvincent 0:05ccbd4f84f1 1080 {
hendrikvincent 0:05ccbd4f84f1 1081 lcp_options *go = &lcp_gotoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 1082 u_char cichar;
hendrikvincent 0:05ccbd4f84f1 1083 u_short cishort;
hendrikvincent 0:05ccbd4f84f1 1084 u32_t cilong;
hendrikvincent 0:05ccbd4f84f1 1085 lcp_options try; /* options to request next time */
hendrikvincent 0:05ccbd4f84f1 1086
hendrikvincent 0:05ccbd4f84f1 1087 try = *go;
hendrikvincent 0:05ccbd4f84f1 1088
hendrikvincent 0:05ccbd4f84f1 1089 /*
hendrikvincent 0:05ccbd4f84f1 1090 * Any Rejected CIs must be in exactly the same order that we sent.
hendrikvincent 0:05ccbd4f84f1 1091 * Check packet length and CI length at each step.
hendrikvincent 0:05ccbd4f84f1 1092 * If we find any deviations, then this packet is bad.
hendrikvincent 0:05ccbd4f84f1 1093 */
hendrikvincent 0:05ccbd4f84f1 1094 #define REJCIVOID(opt, neg) \
hendrikvincent 0:05ccbd4f84f1 1095 if (go->neg && \
hendrikvincent 0:05ccbd4f84f1 1096 len >= CILEN_VOID && \
hendrikvincent 0:05ccbd4f84f1 1097 p[1] == CILEN_VOID && \
hendrikvincent 0:05ccbd4f84f1 1098 p[0] == opt) { \
hendrikvincent 0:05ccbd4f84f1 1099 len -= CILEN_VOID; \
hendrikvincent 0:05ccbd4f84f1 1100 INCPTR(CILEN_VOID, p); \
hendrikvincent 0:05ccbd4f84f1 1101 try.neg = 0; \
hendrikvincent 0:05ccbd4f84f1 1102 LCPDEBUG(LOG_INFO, ("lcp_rejci: void opt %d rejected\n", opt)); \
hendrikvincent 0:05ccbd4f84f1 1103 }
hendrikvincent 0:05ccbd4f84f1 1104 #define REJCISHORT(opt, neg, val) \
hendrikvincent 0:05ccbd4f84f1 1105 if (go->neg && \
hendrikvincent 0:05ccbd4f84f1 1106 len >= CILEN_SHORT && \
hendrikvincent 0:05ccbd4f84f1 1107 p[1] == CILEN_SHORT && \
hendrikvincent 0:05ccbd4f84f1 1108 p[0] == opt) { \
hendrikvincent 0:05ccbd4f84f1 1109 len -= CILEN_SHORT; \
hendrikvincent 0:05ccbd4f84f1 1110 INCPTR(2, p); \
hendrikvincent 0:05ccbd4f84f1 1111 GETSHORT(cishort, p); \
hendrikvincent 0:05ccbd4f84f1 1112 /* Check rejected value. */ \
hendrikvincent 0:05ccbd4f84f1 1113 if (cishort != val) { \
hendrikvincent 0:05ccbd4f84f1 1114 goto bad; \
hendrikvincent 0:05ccbd4f84f1 1115 } \
hendrikvincent 0:05ccbd4f84f1 1116 try.neg = 0; \
hendrikvincent 0:05ccbd4f84f1 1117 LCPDEBUG(LOG_INFO, ("lcp_rejci: short opt %d rejected\n", opt)); \
hendrikvincent 0:05ccbd4f84f1 1118 }
hendrikvincent 0:05ccbd4f84f1 1119 #define REJCICHAP(opt, neg, val, digest) \
hendrikvincent 0:05ccbd4f84f1 1120 if (go->neg && \
hendrikvincent 0:05ccbd4f84f1 1121 len >= CILEN_CHAP && \
hendrikvincent 0:05ccbd4f84f1 1122 p[1] == CILEN_CHAP && \
hendrikvincent 0:05ccbd4f84f1 1123 p[0] == opt) { \
hendrikvincent 0:05ccbd4f84f1 1124 len -= CILEN_CHAP; \
hendrikvincent 0:05ccbd4f84f1 1125 INCPTR(2, p); \
hendrikvincent 0:05ccbd4f84f1 1126 GETSHORT(cishort, p); \
hendrikvincent 0:05ccbd4f84f1 1127 GETCHAR(cichar, p); \
hendrikvincent 0:05ccbd4f84f1 1128 /* Check rejected value. */ \
hendrikvincent 0:05ccbd4f84f1 1129 if (cishort != val || cichar != digest) { \
hendrikvincent 0:05ccbd4f84f1 1130 goto bad; \
hendrikvincent 0:05ccbd4f84f1 1131 } \
hendrikvincent 0:05ccbd4f84f1 1132 try.neg = 0; \
hendrikvincent 0:05ccbd4f84f1 1133 try.neg_upap = 0; \
hendrikvincent 0:05ccbd4f84f1 1134 LCPDEBUG(LOG_INFO, ("lcp_rejci: chap opt %d rejected\n", opt)); \
hendrikvincent 0:05ccbd4f84f1 1135 }
hendrikvincent 0:05ccbd4f84f1 1136 #define REJCILONG(opt, neg, val) \
hendrikvincent 0:05ccbd4f84f1 1137 if (go->neg && \
hendrikvincent 0:05ccbd4f84f1 1138 len >= CILEN_LONG && \
hendrikvincent 0:05ccbd4f84f1 1139 p[1] == CILEN_LONG && \
hendrikvincent 0:05ccbd4f84f1 1140 p[0] == opt) { \
hendrikvincent 0:05ccbd4f84f1 1141 len -= CILEN_LONG; \
hendrikvincent 0:05ccbd4f84f1 1142 INCPTR(2, p); \
hendrikvincent 0:05ccbd4f84f1 1143 GETLONG(cilong, p); \
hendrikvincent 0:05ccbd4f84f1 1144 /* Check rejected value. */ \
hendrikvincent 0:05ccbd4f84f1 1145 if (cilong != val) { \
hendrikvincent 0:05ccbd4f84f1 1146 goto bad; \
hendrikvincent 0:05ccbd4f84f1 1147 } \
hendrikvincent 0:05ccbd4f84f1 1148 try.neg = 0; \
hendrikvincent 0:05ccbd4f84f1 1149 LCPDEBUG(LOG_INFO, ("lcp_rejci: long opt %d rejected\n", opt)); \
hendrikvincent 0:05ccbd4f84f1 1150 }
hendrikvincent 0:05ccbd4f84f1 1151 #define REJCILQR(opt, neg, val) \
hendrikvincent 0:05ccbd4f84f1 1152 if (go->neg && \
hendrikvincent 0:05ccbd4f84f1 1153 len >= CILEN_LQR && \
hendrikvincent 0:05ccbd4f84f1 1154 p[1] == CILEN_LQR && \
hendrikvincent 0:05ccbd4f84f1 1155 p[0] == opt) { \
hendrikvincent 0:05ccbd4f84f1 1156 len -= CILEN_LQR; \
hendrikvincent 0:05ccbd4f84f1 1157 INCPTR(2, p); \
hendrikvincent 0:05ccbd4f84f1 1158 GETSHORT(cishort, p); \
hendrikvincent 0:05ccbd4f84f1 1159 GETLONG(cilong, p); \
hendrikvincent 0:05ccbd4f84f1 1160 /* Check rejected value. */ \
hendrikvincent 0:05ccbd4f84f1 1161 if (cishort != PPP_LQR || cilong != val) { \
hendrikvincent 0:05ccbd4f84f1 1162 goto bad; \
hendrikvincent 0:05ccbd4f84f1 1163 } \
hendrikvincent 0:05ccbd4f84f1 1164 try.neg = 0; \
hendrikvincent 0:05ccbd4f84f1 1165 LCPDEBUG(LOG_INFO, ("lcp_rejci: LQR opt %d rejected\n", opt)); \
hendrikvincent 0:05ccbd4f84f1 1166 }
hendrikvincent 0:05ccbd4f84f1 1167 #define REJCICBCP(opt, neg, val) \
hendrikvincent 0:05ccbd4f84f1 1168 if (go->neg && \
hendrikvincent 0:05ccbd4f84f1 1169 len >= CILEN_CBCP && \
hendrikvincent 0:05ccbd4f84f1 1170 p[1] == CILEN_CBCP && \
hendrikvincent 0:05ccbd4f84f1 1171 p[0] == opt) { \
hendrikvincent 0:05ccbd4f84f1 1172 len -= CILEN_CBCP; \
hendrikvincent 0:05ccbd4f84f1 1173 INCPTR(2, p); \
hendrikvincent 0:05ccbd4f84f1 1174 GETCHAR(cichar, p); \
hendrikvincent 0:05ccbd4f84f1 1175 /* Check rejected value. */ \
hendrikvincent 0:05ccbd4f84f1 1176 if (cichar != val) { \
hendrikvincent 0:05ccbd4f84f1 1177 goto bad; \
hendrikvincent 0:05ccbd4f84f1 1178 } \
hendrikvincent 0:05ccbd4f84f1 1179 try.neg = 0; \
hendrikvincent 0:05ccbd4f84f1 1180 LCPDEBUG(LOG_INFO, ("lcp_rejci: Callback opt %d rejected\n", opt)); \
hendrikvincent 0:05ccbd4f84f1 1181 }
hendrikvincent 0:05ccbd4f84f1 1182
hendrikvincent 0:05ccbd4f84f1 1183 REJCISHORT(CI_MRU, neg_mru, go->mru);
hendrikvincent 0:05ccbd4f84f1 1184 REJCILONG(CI_ASYNCMAP, neg_asyncmap, go->asyncmap);
hendrikvincent 0:05ccbd4f84f1 1185 REJCICHAP(CI_AUTHTYPE, neg_chap, PPP_CHAP, go->chap_mdtype);
hendrikvincent 0:05ccbd4f84f1 1186 if (!go->neg_chap) {
hendrikvincent 0:05ccbd4f84f1 1187 REJCISHORT(CI_AUTHTYPE, neg_upap, PPP_PAP);
hendrikvincent 0:05ccbd4f84f1 1188 }
hendrikvincent 0:05ccbd4f84f1 1189 REJCILQR(CI_QUALITY, neg_lqr, go->lqr_period);
hendrikvincent 0:05ccbd4f84f1 1190 REJCICBCP(CI_CALLBACK, neg_cbcp, CBCP_OPT);
hendrikvincent 0:05ccbd4f84f1 1191 REJCILONG(CI_MAGICNUMBER, neg_magicnumber, go->magicnumber);
hendrikvincent 0:05ccbd4f84f1 1192 REJCIVOID(CI_PCOMPRESSION, neg_pcompression);
hendrikvincent 0:05ccbd4f84f1 1193 REJCIVOID(CI_ACCOMPRESSION, neg_accompression);
hendrikvincent 0:05ccbd4f84f1 1194
hendrikvincent 0:05ccbd4f84f1 1195 /*
hendrikvincent 0:05ccbd4f84f1 1196 * If there are any remaining CIs, then this packet is bad.
hendrikvincent 0:05ccbd4f84f1 1197 */
hendrikvincent 0:05ccbd4f84f1 1198 if (len != 0) {
hendrikvincent 0:05ccbd4f84f1 1199 goto bad;
hendrikvincent 0:05ccbd4f84f1 1200 }
hendrikvincent 0:05ccbd4f84f1 1201 /*
hendrikvincent 0:05ccbd4f84f1 1202 * Now we can update state.
hendrikvincent 0:05ccbd4f84f1 1203 */
hendrikvincent 0:05ccbd4f84f1 1204 if (f->state != LS_OPENED) {
hendrikvincent 0:05ccbd4f84f1 1205 *go = try;
hendrikvincent 0:05ccbd4f84f1 1206 }
hendrikvincent 0:05ccbd4f84f1 1207 return 1;
hendrikvincent 0:05ccbd4f84f1 1208
hendrikvincent 0:05ccbd4f84f1 1209 bad:
hendrikvincent 0:05ccbd4f84f1 1210 LCPDEBUG(LOG_WARNING, ("lcp_rejci: received bad Reject!\n"));
hendrikvincent 0:05ccbd4f84f1 1211 return 0;
hendrikvincent 0:05ccbd4f84f1 1212 }
hendrikvincent 0:05ccbd4f84f1 1213
hendrikvincent 0:05ccbd4f84f1 1214
hendrikvincent 0:05ccbd4f84f1 1215 /*
hendrikvincent 0:05ccbd4f84f1 1216 * lcp_reqci - Check the peer's requested CIs and send appropriate response.
hendrikvincent 0:05ccbd4f84f1 1217 *
hendrikvincent 0:05ccbd4f84f1 1218 * Returns: CONFACK, CONFNAK or CONFREJ and input packet modified
hendrikvincent 0:05ccbd4f84f1 1219 * appropriately. If reject_if_disagree is non-zero, doesn't return
hendrikvincent 0:05ccbd4f84f1 1220 * CONFNAK; returns CONFREJ if it can't return CONFACK.
hendrikvincent 0:05ccbd4f84f1 1221 */
hendrikvincent 0:05ccbd4f84f1 1222 static int
hendrikvincent 0:05ccbd4f84f1 1223 lcp_reqci(fsm *f,
hendrikvincent 0:05ccbd4f84f1 1224 u_char *inp, /* Requested CIs */
hendrikvincent 0:05ccbd4f84f1 1225 int *lenp, /* Length of requested CIs */
hendrikvincent 0:05ccbd4f84f1 1226 int reject_if_disagree)
hendrikvincent 0:05ccbd4f84f1 1227 {
hendrikvincent 0:05ccbd4f84f1 1228 lcp_options *go = &lcp_gotoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 1229 lcp_options *ho = &lcp_hisoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 1230 lcp_options *ao = &lcp_allowoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 1231 u_char *cip, *next; /* Pointer to current and next CIs */
hendrikvincent 0:05ccbd4f84f1 1232 int cilen, citype; /* Parsed len, type */
hendrikvincent 0:05ccbd4f84f1 1233 u_char cichar; /* Parsed char value */
hendrikvincent 0:05ccbd4f84f1 1234 u_short cishort; /* Parsed short value */
hendrikvincent 0:05ccbd4f84f1 1235 u32_t cilong; /* Parse long value */
hendrikvincent 0:05ccbd4f84f1 1236 int rc = CONFACK; /* Final packet return code */
hendrikvincent 0:05ccbd4f84f1 1237 int orc; /* Individual option return code */
hendrikvincent 0:05ccbd4f84f1 1238 u_char *p; /* Pointer to next char to parse */
hendrikvincent 0:05ccbd4f84f1 1239 u_char *rejp; /* Pointer to next char in reject frame */
hendrikvincent 0:05ccbd4f84f1 1240 u_char *nakp; /* Pointer to next char in Nak frame */
hendrikvincent 0:05ccbd4f84f1 1241 int l = *lenp; /* Length left */
hendrikvincent 0:05ccbd4f84f1 1242 #if TRACELCP > 0
hendrikvincent 0:05ccbd4f84f1 1243 char traceBuf[80];
hendrikvincent 0:05ccbd4f84f1 1244 size_t traceNdx = 0;
hendrikvincent 0:05ccbd4f84f1 1245 #endif
hendrikvincent 0:05ccbd4f84f1 1246
hendrikvincent 0:05ccbd4f84f1 1247 /*
hendrikvincent 0:05ccbd4f84f1 1248 * Reset all his options.
hendrikvincent 0:05ccbd4f84f1 1249 */
hendrikvincent 0:05ccbd4f84f1 1250 BZERO(ho, sizeof(*ho));
hendrikvincent 0:05ccbd4f84f1 1251
hendrikvincent 0:05ccbd4f84f1 1252 /*
hendrikvincent 0:05ccbd4f84f1 1253 * Process all his options.
hendrikvincent 0:05ccbd4f84f1 1254 */
hendrikvincent 0:05ccbd4f84f1 1255 next = inp;
hendrikvincent 0:05ccbd4f84f1 1256 nakp = nak_buffer;
hendrikvincent 0:05ccbd4f84f1 1257 rejp = inp;
hendrikvincent 0:05ccbd4f84f1 1258 while (l) {
hendrikvincent 0:05ccbd4f84f1 1259 orc = CONFACK; /* Assume success */
hendrikvincent 0:05ccbd4f84f1 1260 cip = p = next; /* Remember begining of CI */
hendrikvincent 0:05ccbd4f84f1 1261 if (l < 2 || /* Not enough data for CI header or */
hendrikvincent 0:05ccbd4f84f1 1262 p[1] < 2 || /* CI length too small or */
hendrikvincent 0:05ccbd4f84f1 1263 p[1] > l) { /* CI length too big? */
hendrikvincent 0:05ccbd4f84f1 1264 LCPDEBUG(LOG_WARNING, ("lcp_reqci: bad CI length!\n"));
hendrikvincent 0:05ccbd4f84f1 1265 orc = CONFREJ; /* Reject bad CI */
hendrikvincent 0:05ccbd4f84f1 1266 cilen = l; /* Reject till end of packet */
hendrikvincent 0:05ccbd4f84f1 1267 l = 0; /* Don't loop again */
hendrikvincent 0:05ccbd4f84f1 1268 citype = 0;
hendrikvincent 0:05ccbd4f84f1 1269 goto endswitch;
hendrikvincent 0:05ccbd4f84f1 1270 }
hendrikvincent 0:05ccbd4f84f1 1271 GETCHAR(citype, p); /* Parse CI type */
hendrikvincent 0:05ccbd4f84f1 1272 GETCHAR(cilen, p); /* Parse CI length */
hendrikvincent 0:05ccbd4f84f1 1273 l -= cilen; /* Adjust remaining length */
hendrikvincent 0:05ccbd4f84f1 1274 next += cilen; /* Step to next CI */
hendrikvincent 0:05ccbd4f84f1 1275
hendrikvincent 0:05ccbd4f84f1 1276 switch (citype) { /* Check CI type */
hendrikvincent 0:05ccbd4f84f1 1277 case CI_MRU:
hendrikvincent 0:05ccbd4f84f1 1278 if (!ao->neg_mru) { /* Allow option? */
hendrikvincent 0:05ccbd4f84f1 1279 LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - not allowed\n"));
hendrikvincent 0:05ccbd4f84f1 1280 orc = CONFREJ; /* Reject CI */
hendrikvincent 0:05ccbd4f84f1 1281 break;
hendrikvincent 0:05ccbd4f84f1 1282 } else if (cilen != CILEN_SHORT) { /* Check CI length */
hendrikvincent 0:05ccbd4f84f1 1283 LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - bad length\n"));
hendrikvincent 0:05ccbd4f84f1 1284 orc = CONFREJ; /* Reject CI */
hendrikvincent 0:05ccbd4f84f1 1285 break;
hendrikvincent 0:05ccbd4f84f1 1286 }
hendrikvincent 0:05ccbd4f84f1 1287 GETSHORT(cishort, p); /* Parse MRU */
hendrikvincent 0:05ccbd4f84f1 1288
hendrikvincent 0:05ccbd4f84f1 1289 /*
hendrikvincent 0:05ccbd4f84f1 1290 * He must be able to receive at least our minimum.
hendrikvincent 0:05ccbd4f84f1 1291 * No need to check a maximum. If he sends a large number,
hendrikvincent 0:05ccbd4f84f1 1292 * we'll just ignore it.
hendrikvincent 0:05ccbd4f84f1 1293 */
hendrikvincent 0:05ccbd4f84f1 1294 if (cishort < PPP_MINMRU) {
hendrikvincent 0:05ccbd4f84f1 1295 LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak - MRU too small\n"));
hendrikvincent 0:05ccbd4f84f1 1296 orc = CONFNAK; /* Nak CI */
hendrikvincent 0:05ccbd4f84f1 1297 PUTCHAR(CI_MRU, nakp);
hendrikvincent 0:05ccbd4f84f1 1298 PUTCHAR(CILEN_SHORT, nakp);
hendrikvincent 0:05ccbd4f84f1 1299 PUTSHORT(PPP_MINMRU, nakp); /* Give him a hint */
hendrikvincent 0:05ccbd4f84f1 1300 break;
hendrikvincent 0:05ccbd4f84f1 1301 }
hendrikvincent 0:05ccbd4f84f1 1302 ho->neg_mru = 1; /* Remember he sent MRU */
hendrikvincent 0:05ccbd4f84f1 1303 ho->mru = cishort; /* And remember value */
hendrikvincent 0:05ccbd4f84f1 1304 #if TRACELCP > 0
hendrikvincent 0:05ccbd4f84f1 1305 snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MRU %d", cishort);
hendrikvincent 0:05ccbd4f84f1 1306 traceNdx = strlen(traceBuf);
hendrikvincent 0:05ccbd4f84f1 1307 #endif
hendrikvincent 0:05ccbd4f84f1 1308 break;
hendrikvincent 0:05ccbd4f84f1 1309
hendrikvincent 0:05ccbd4f84f1 1310 case CI_ASYNCMAP:
hendrikvincent 0:05ccbd4f84f1 1311 if (!ao->neg_asyncmap) {
hendrikvincent 0:05ccbd4f84f1 1312 LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP not allowed\n"));
hendrikvincent 0:05ccbd4f84f1 1313 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1314 break;
hendrikvincent 0:05ccbd4f84f1 1315 } else if (cilen != CILEN_LONG) {
hendrikvincent 0:05ccbd4f84f1 1316 LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP bad length\n"));
hendrikvincent 0:05ccbd4f84f1 1317 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1318 break;
hendrikvincent 0:05ccbd4f84f1 1319 }
hendrikvincent 0:05ccbd4f84f1 1320 GETLONG(cilong, p);
hendrikvincent 0:05ccbd4f84f1 1321
hendrikvincent 0:05ccbd4f84f1 1322 /*
hendrikvincent 0:05ccbd4f84f1 1323 * Asyncmap must have set at least the bits
hendrikvincent 0:05ccbd4f84f1 1324 * which are set in lcp_allowoptions[unit].asyncmap.
hendrikvincent 0:05ccbd4f84f1 1325 */
hendrikvincent 0:05ccbd4f84f1 1326 if ((ao->asyncmap & ~cilong) != 0) {
hendrikvincent 0:05ccbd4f84f1 1327 LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak ASYNCMAP %lX missing %lX\n",
hendrikvincent 0:05ccbd4f84f1 1328 cilong, ao->asyncmap));
hendrikvincent 0:05ccbd4f84f1 1329 orc = CONFNAK;
hendrikvincent 0:05ccbd4f84f1 1330 PUTCHAR(CI_ASYNCMAP, nakp);
hendrikvincent 0:05ccbd4f84f1 1331 PUTCHAR(CILEN_LONG, nakp);
hendrikvincent 0:05ccbd4f84f1 1332 PUTLONG(ao->asyncmap | cilong, nakp);
hendrikvincent 0:05ccbd4f84f1 1333 break;
hendrikvincent 0:05ccbd4f84f1 1334 }
hendrikvincent 0:05ccbd4f84f1 1335 ho->neg_asyncmap = 1;
hendrikvincent 0:05ccbd4f84f1 1336 ho->asyncmap = cilong;
hendrikvincent 0:05ccbd4f84f1 1337 #if TRACELCP > 0
hendrikvincent 0:05ccbd4f84f1 1338 snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ASYNCMAP=%lX", cilong);
hendrikvincent 0:05ccbd4f84f1 1339 traceNdx = strlen(traceBuf);
hendrikvincent 0:05ccbd4f84f1 1340 #endif
hendrikvincent 0:05ccbd4f84f1 1341 break;
hendrikvincent 0:05ccbd4f84f1 1342
hendrikvincent 0:05ccbd4f84f1 1343 case CI_AUTHTYPE:
hendrikvincent 0:05ccbd4f84f1 1344 if (cilen < CILEN_SHORT) {
hendrikvincent 0:05ccbd4f84f1 1345 LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE missing arg\n"));
hendrikvincent 0:05ccbd4f84f1 1346 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1347 break;
hendrikvincent 0:05ccbd4f84f1 1348 } else if (!(ao->neg_upap || ao->neg_chap)) {
hendrikvincent 0:05ccbd4f84f1 1349 /*
hendrikvincent 0:05ccbd4f84f1 1350 * Reject the option if we're not willing to authenticate.
hendrikvincent 0:05ccbd4f84f1 1351 */
hendrikvincent 0:05ccbd4f84f1 1352 LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE not allowed\n"));
hendrikvincent 0:05ccbd4f84f1 1353 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1354 break;
hendrikvincent 0:05ccbd4f84f1 1355 }
hendrikvincent 0:05ccbd4f84f1 1356 GETSHORT(cishort, p);
hendrikvincent 0:05ccbd4f84f1 1357
hendrikvincent 0:05ccbd4f84f1 1358 /*
hendrikvincent 0:05ccbd4f84f1 1359 * Authtype must be UPAP or CHAP.
hendrikvincent 0:05ccbd4f84f1 1360 *
hendrikvincent 0:05ccbd4f84f1 1361 * Note: if both ao->neg_upap and ao->neg_chap are set,
hendrikvincent 0:05ccbd4f84f1 1362 * and the peer sends a Configure-Request with two
hendrikvincent 0:05ccbd4f84f1 1363 * authenticate-protocol requests, one for CHAP and one
hendrikvincent 0:05ccbd4f84f1 1364 * for UPAP, then we will reject the second request.
hendrikvincent 0:05ccbd4f84f1 1365 * Whether we end up doing CHAP or UPAP depends then on
hendrikvincent 0:05ccbd4f84f1 1366 * the ordering of the CIs in the peer's Configure-Request.
hendrikvincent 0:05ccbd4f84f1 1367 */
hendrikvincent 0:05ccbd4f84f1 1368
hendrikvincent 0:05ccbd4f84f1 1369 if (cishort == PPP_PAP) {
hendrikvincent 0:05ccbd4f84f1 1370 if (ho->neg_chap) { /* we've already accepted CHAP */
hendrikvincent 0:05ccbd4f84f1 1371 LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP already accepted\n"));
hendrikvincent 0:05ccbd4f84f1 1372 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1373 break;
hendrikvincent 0:05ccbd4f84f1 1374 } else if (cilen != CILEN_SHORT) {
hendrikvincent 0:05ccbd4f84f1 1375 LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP bad len\n"));
hendrikvincent 0:05ccbd4f84f1 1376 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1377 break;
hendrikvincent 0:05ccbd4f84f1 1378 }
hendrikvincent 0:05ccbd4f84f1 1379 if (!ao->neg_upap) { /* we don't want to do PAP */
hendrikvincent 0:05ccbd4f84f1 1380 LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE PAP not allowed\n"));
hendrikvincent 0:05ccbd4f84f1 1381 orc = CONFNAK; /* NAK it and suggest CHAP */
hendrikvincent 0:05ccbd4f84f1 1382 PUTCHAR(CI_AUTHTYPE, nakp);
hendrikvincent 0:05ccbd4f84f1 1383 PUTCHAR(CILEN_CHAP, nakp);
hendrikvincent 0:05ccbd4f84f1 1384 PUTSHORT(PPP_CHAP, nakp);
hendrikvincent 0:05ccbd4f84f1 1385 PUTCHAR(ao->chap_mdtype, nakp);
hendrikvincent 0:05ccbd4f84f1 1386 break;
hendrikvincent 0:05ccbd4f84f1 1387 }
hendrikvincent 0:05ccbd4f84f1 1388 ho->neg_upap = 1;
hendrikvincent 0:05ccbd4f84f1 1389 #if TRACELCP > 0
hendrikvincent 0:05ccbd4f84f1 1390 snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PAP (%X)", cishort);
hendrikvincent 0:05ccbd4f84f1 1391 traceNdx = strlen(traceBuf);
hendrikvincent 0:05ccbd4f84f1 1392 #endif
hendrikvincent 0:05ccbd4f84f1 1393 break;
hendrikvincent 0:05ccbd4f84f1 1394 }
hendrikvincent 0:05ccbd4f84f1 1395 if (cishort == PPP_CHAP) {
hendrikvincent 0:05ccbd4f84f1 1396 if (ho->neg_upap) { /* we've already accepted PAP */
hendrikvincent 0:05ccbd4f84f1 1397 LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP accepted PAP\n"));
hendrikvincent 0:05ccbd4f84f1 1398 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1399 break;
hendrikvincent 0:05ccbd4f84f1 1400 } else if (cilen != CILEN_CHAP) {
hendrikvincent 0:05ccbd4f84f1 1401 LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP bad len\n"));
hendrikvincent 0:05ccbd4f84f1 1402 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1403 break;
hendrikvincent 0:05ccbd4f84f1 1404 }
hendrikvincent 0:05ccbd4f84f1 1405 if (!ao->neg_chap) { /* we don't want to do CHAP */
hendrikvincent 0:05ccbd4f84f1 1406 LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP not allowed\n"));
hendrikvincent 0:05ccbd4f84f1 1407 orc = CONFNAK; /* NAK it and suggest PAP */
hendrikvincent 0:05ccbd4f84f1 1408 PUTCHAR(CI_AUTHTYPE, nakp);
hendrikvincent 0:05ccbd4f84f1 1409 PUTCHAR(CILEN_SHORT, nakp);
hendrikvincent 0:05ccbd4f84f1 1410 PUTSHORT(PPP_PAP, nakp);
hendrikvincent 0:05ccbd4f84f1 1411 break;
hendrikvincent 0:05ccbd4f84f1 1412 }
hendrikvincent 0:05ccbd4f84f1 1413 GETCHAR(cichar, p); /* get digest type*/
hendrikvincent 0:05ccbd4f84f1 1414 if (cichar != CHAP_DIGEST_MD5
hendrikvincent 0:05ccbd4f84f1 1415 #if MSCHAP_SUPPORT
hendrikvincent 0:05ccbd4f84f1 1416 && cichar != CHAP_MICROSOFT
hendrikvincent 0:05ccbd4f84f1 1417 #endif
hendrikvincent 0:05ccbd4f84f1 1418 ) {
hendrikvincent 0:05ccbd4f84f1 1419 LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP digest=%d\n", (int)cichar));
hendrikvincent 0:05ccbd4f84f1 1420 orc = CONFNAK;
hendrikvincent 0:05ccbd4f84f1 1421 PUTCHAR(CI_AUTHTYPE, nakp);
hendrikvincent 0:05ccbd4f84f1 1422 PUTCHAR(CILEN_CHAP, nakp);
hendrikvincent 0:05ccbd4f84f1 1423 PUTSHORT(PPP_CHAP, nakp);
hendrikvincent 0:05ccbd4f84f1 1424 PUTCHAR(ao->chap_mdtype, nakp);
hendrikvincent 0:05ccbd4f84f1 1425 break;
hendrikvincent 0:05ccbd4f84f1 1426 }
hendrikvincent 0:05ccbd4f84f1 1427 #if TRACELCP > 0
hendrikvincent 0:05ccbd4f84f1 1428 snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CHAP %X,%d", cishort, (int)cichar);
hendrikvincent 0:05ccbd4f84f1 1429 traceNdx = strlen(traceBuf);
hendrikvincent 0:05ccbd4f84f1 1430 #endif
hendrikvincent 0:05ccbd4f84f1 1431 ho->chap_mdtype = cichar; /* save md type */
hendrikvincent 0:05ccbd4f84f1 1432 ho->neg_chap = 1;
hendrikvincent 0:05ccbd4f84f1 1433 break;
hendrikvincent 0:05ccbd4f84f1 1434 }
hendrikvincent 0:05ccbd4f84f1 1435
hendrikvincent 0:05ccbd4f84f1 1436 /*
hendrikvincent 0:05ccbd4f84f1 1437 * We don't recognize the protocol they're asking for.
hendrikvincent 0:05ccbd4f84f1 1438 * Nak it with something we're willing to do.
hendrikvincent 0:05ccbd4f84f1 1439 * (At this point we know ao->neg_upap || ao->neg_chap.)
hendrikvincent 0:05ccbd4f84f1 1440 */
hendrikvincent 0:05ccbd4f84f1 1441 orc = CONFNAK;
hendrikvincent 0:05ccbd4f84f1 1442 PUTCHAR(CI_AUTHTYPE, nakp);
hendrikvincent 0:05ccbd4f84f1 1443 if (ao->neg_chap) {
hendrikvincent 0:05ccbd4f84f1 1444 LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req CHAP\n", cishort));
hendrikvincent 0:05ccbd4f84f1 1445 PUTCHAR(CILEN_CHAP, nakp);
hendrikvincent 0:05ccbd4f84f1 1446 PUTSHORT(PPP_CHAP, nakp);
hendrikvincent 0:05ccbd4f84f1 1447 PUTCHAR(ao->chap_mdtype, nakp);
hendrikvincent 0:05ccbd4f84f1 1448 } else {
hendrikvincent 0:05ccbd4f84f1 1449 LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req PAP\n", cishort));
hendrikvincent 0:05ccbd4f84f1 1450 PUTCHAR(CILEN_SHORT, nakp);
hendrikvincent 0:05ccbd4f84f1 1451 PUTSHORT(PPP_PAP, nakp);
hendrikvincent 0:05ccbd4f84f1 1452 }
hendrikvincent 0:05ccbd4f84f1 1453 break;
hendrikvincent 0:05ccbd4f84f1 1454
hendrikvincent 0:05ccbd4f84f1 1455 case CI_QUALITY:
hendrikvincent 0:05ccbd4f84f1 1456 GETSHORT(cishort, p);
hendrikvincent 0:05ccbd4f84f1 1457 GETLONG(cilong, p);
hendrikvincent 0:05ccbd4f84f1 1458 #if TRACELCP > 0
hendrikvincent 0:05ccbd4f84f1 1459 snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " QUALITY (%x %x)", cishort, (unsigned int) cilong);
hendrikvincent 0:05ccbd4f84f1 1460 traceNdx = strlen(traceBuf);
hendrikvincent 0:05ccbd4f84f1 1461 #endif
hendrikvincent 0:05ccbd4f84f1 1462
hendrikvincent 0:05ccbd4f84f1 1463 if (!ao->neg_lqr ||
hendrikvincent 0:05ccbd4f84f1 1464 cilen != CILEN_LQR) {
hendrikvincent 0:05ccbd4f84f1 1465 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1466 break;
hendrikvincent 0:05ccbd4f84f1 1467 }
hendrikvincent 0:05ccbd4f84f1 1468
hendrikvincent 0:05ccbd4f84f1 1469 /*
hendrikvincent 0:05ccbd4f84f1 1470 * Check the protocol and the reporting period.
hendrikvincent 0:05ccbd4f84f1 1471 * XXX When should we Nak this, and what with?
hendrikvincent 0:05ccbd4f84f1 1472 */
hendrikvincent 0:05ccbd4f84f1 1473 if (cishort != PPP_LQR) {
hendrikvincent 0:05ccbd4f84f1 1474 orc = CONFNAK;
hendrikvincent 0:05ccbd4f84f1 1475 PUTCHAR(CI_QUALITY, nakp);
hendrikvincent 0:05ccbd4f84f1 1476 PUTCHAR(CILEN_LQR, nakp);
hendrikvincent 0:05ccbd4f84f1 1477 PUTSHORT(PPP_LQR, nakp);
hendrikvincent 0:05ccbd4f84f1 1478 PUTLONG(ao->lqr_period, nakp);
hendrikvincent 0:05ccbd4f84f1 1479 break;
hendrikvincent 0:05ccbd4f84f1 1480 }
hendrikvincent 0:05ccbd4f84f1 1481 break;
hendrikvincent 0:05ccbd4f84f1 1482
hendrikvincent 0:05ccbd4f84f1 1483 case CI_MAGICNUMBER:
hendrikvincent 0:05ccbd4f84f1 1484 if (!(ao->neg_magicnumber || go->neg_magicnumber) ||
hendrikvincent 0:05ccbd4f84f1 1485 cilen != CILEN_LONG) {
hendrikvincent 0:05ccbd4f84f1 1486 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1487 break;
hendrikvincent 0:05ccbd4f84f1 1488 }
hendrikvincent 0:05ccbd4f84f1 1489 GETLONG(cilong, p);
hendrikvincent 0:05ccbd4f84f1 1490 #if TRACELCP > 0
hendrikvincent 0:05ccbd4f84f1 1491 snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MAGICNUMBER (%lX)", cilong);
hendrikvincent 0:05ccbd4f84f1 1492 traceNdx = strlen(traceBuf);
hendrikvincent 0:05ccbd4f84f1 1493 #endif
hendrikvincent 0:05ccbd4f84f1 1494
hendrikvincent 0:05ccbd4f84f1 1495 /*
hendrikvincent 0:05ccbd4f84f1 1496 * He must have a different magic number.
hendrikvincent 0:05ccbd4f84f1 1497 */
hendrikvincent 0:05ccbd4f84f1 1498 if (go->neg_magicnumber &&
hendrikvincent 0:05ccbd4f84f1 1499 cilong == go->magicnumber) {
hendrikvincent 0:05ccbd4f84f1 1500 cilong = magic(); /* Don't put magic() inside macro! */
hendrikvincent 0:05ccbd4f84f1 1501 orc = CONFNAK;
hendrikvincent 0:05ccbd4f84f1 1502 PUTCHAR(CI_MAGICNUMBER, nakp);
hendrikvincent 0:05ccbd4f84f1 1503 PUTCHAR(CILEN_LONG, nakp);
hendrikvincent 0:05ccbd4f84f1 1504 PUTLONG(cilong, nakp);
hendrikvincent 0:05ccbd4f84f1 1505 break;
hendrikvincent 0:05ccbd4f84f1 1506 }
hendrikvincent 0:05ccbd4f84f1 1507 ho->neg_magicnumber = 1;
hendrikvincent 0:05ccbd4f84f1 1508 ho->magicnumber = cilong;
hendrikvincent 0:05ccbd4f84f1 1509 break;
hendrikvincent 0:05ccbd4f84f1 1510
hendrikvincent 0:05ccbd4f84f1 1511
hendrikvincent 0:05ccbd4f84f1 1512 case CI_PCOMPRESSION:
hendrikvincent 0:05ccbd4f84f1 1513 #if TRACELCP > 0
hendrikvincent 0:05ccbd4f84f1 1514 snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PCOMPRESSION");
hendrikvincent 0:05ccbd4f84f1 1515 traceNdx = strlen(traceBuf);
hendrikvincent 0:05ccbd4f84f1 1516 #endif
hendrikvincent 0:05ccbd4f84f1 1517 if (!ao->neg_pcompression ||
hendrikvincent 0:05ccbd4f84f1 1518 cilen != CILEN_VOID) {
hendrikvincent 0:05ccbd4f84f1 1519 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1520 break;
hendrikvincent 0:05ccbd4f84f1 1521 }
hendrikvincent 0:05ccbd4f84f1 1522 ho->neg_pcompression = 1;
hendrikvincent 0:05ccbd4f84f1 1523 break;
hendrikvincent 0:05ccbd4f84f1 1524
hendrikvincent 0:05ccbd4f84f1 1525 case CI_ACCOMPRESSION:
hendrikvincent 0:05ccbd4f84f1 1526 #if TRACELCP > 0
hendrikvincent 0:05ccbd4f84f1 1527 snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ACCOMPRESSION");
hendrikvincent 0:05ccbd4f84f1 1528 traceNdx = strlen(traceBuf);
hendrikvincent 0:05ccbd4f84f1 1529 #endif
hendrikvincent 0:05ccbd4f84f1 1530 if (!ao->neg_accompression ||
hendrikvincent 0:05ccbd4f84f1 1531 cilen != CILEN_VOID) {
hendrikvincent 0:05ccbd4f84f1 1532 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1533 break;
hendrikvincent 0:05ccbd4f84f1 1534 }
hendrikvincent 0:05ccbd4f84f1 1535 ho->neg_accompression = 1;
hendrikvincent 0:05ccbd4f84f1 1536 break;
hendrikvincent 0:05ccbd4f84f1 1537
hendrikvincent 0:05ccbd4f84f1 1538 case CI_MRRU:
hendrikvincent 0:05ccbd4f84f1 1539 #if TRACELCP > 0
hendrikvincent 0:05ccbd4f84f1 1540 snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_MRRU");
hendrikvincent 0:05ccbd4f84f1 1541 traceNdx = strlen(traceBuf);
hendrikvincent 0:05ccbd4f84f1 1542 #endif
hendrikvincent 0:05ccbd4f84f1 1543 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1544 break;
hendrikvincent 0:05ccbd4f84f1 1545
hendrikvincent 0:05ccbd4f84f1 1546 case CI_SSNHF:
hendrikvincent 0:05ccbd4f84f1 1547 #if TRACELCP > 0
hendrikvincent 0:05ccbd4f84f1 1548 snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_SSNHF");
hendrikvincent 0:05ccbd4f84f1 1549 traceNdx = strlen(traceBuf);
hendrikvincent 0:05ccbd4f84f1 1550 #endif
hendrikvincent 0:05ccbd4f84f1 1551 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1552 break;
hendrikvincent 0:05ccbd4f84f1 1553
hendrikvincent 0:05ccbd4f84f1 1554 case CI_EPDISC:
hendrikvincent 0:05ccbd4f84f1 1555 #if TRACELCP > 0
hendrikvincent 0:05ccbd4f84f1 1556 snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_EPDISC");
hendrikvincent 0:05ccbd4f84f1 1557 traceNdx = strlen(traceBuf);
hendrikvincent 0:05ccbd4f84f1 1558 #endif
hendrikvincent 0:05ccbd4f84f1 1559 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1560 break;
hendrikvincent 0:05ccbd4f84f1 1561
hendrikvincent 0:05ccbd4f84f1 1562 default:
hendrikvincent 0:05ccbd4f84f1 1563 #if TRACELCP
hendrikvincent 0:05ccbd4f84f1 1564 snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " unknown %d", citype);
hendrikvincent 0:05ccbd4f84f1 1565 traceNdx = strlen(traceBuf);
hendrikvincent 0:05ccbd4f84f1 1566 #endif
hendrikvincent 0:05ccbd4f84f1 1567 orc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1568 break;
hendrikvincent 0:05ccbd4f84f1 1569 }
hendrikvincent 0:05ccbd4f84f1 1570
hendrikvincent 0:05ccbd4f84f1 1571 endswitch:
hendrikvincent 0:05ccbd4f84f1 1572 #if TRACELCP
hendrikvincent 0:05ccbd4f84f1 1573 if (traceNdx >= 80 - 32) {
hendrikvincent 0:05ccbd4f84f1 1574 LCPDEBUG(LOG_INFO, ("lcp_reqci: rcvd%s\n", traceBuf));
hendrikvincent 0:05ccbd4f84f1 1575 traceNdx = 0;
hendrikvincent 0:05ccbd4f84f1 1576 }
hendrikvincent 0:05ccbd4f84f1 1577 #endif
hendrikvincent 0:05ccbd4f84f1 1578 if (orc == CONFACK && /* Good CI */
hendrikvincent 0:05ccbd4f84f1 1579 rc != CONFACK) { /* but prior CI wasnt? */
hendrikvincent 0:05ccbd4f84f1 1580 continue; /* Don't send this one */
hendrikvincent 0:05ccbd4f84f1 1581 }
hendrikvincent 0:05ccbd4f84f1 1582
hendrikvincent 0:05ccbd4f84f1 1583 if (orc == CONFNAK) { /* Nak this CI? */
hendrikvincent 0:05ccbd4f84f1 1584 if (reject_if_disagree /* Getting fed up with sending NAKs? */
hendrikvincent 0:05ccbd4f84f1 1585 && citype != CI_MAGICNUMBER) {
hendrikvincent 0:05ccbd4f84f1 1586 orc = CONFREJ; /* Get tough if so */
hendrikvincent 0:05ccbd4f84f1 1587 } else {
hendrikvincent 0:05ccbd4f84f1 1588 if (rc == CONFREJ) { /* Rejecting prior CI? */
hendrikvincent 0:05ccbd4f84f1 1589 continue; /* Don't send this one */
hendrikvincent 0:05ccbd4f84f1 1590 }
hendrikvincent 0:05ccbd4f84f1 1591 rc = CONFNAK;
hendrikvincent 0:05ccbd4f84f1 1592 }
hendrikvincent 0:05ccbd4f84f1 1593 }
hendrikvincent 0:05ccbd4f84f1 1594 if (orc == CONFREJ) { /* Reject this CI */
hendrikvincent 0:05ccbd4f84f1 1595 rc = CONFREJ;
hendrikvincent 0:05ccbd4f84f1 1596 if (cip != rejp) { /* Need to move rejected CI? */
hendrikvincent 0:05ccbd4f84f1 1597 BCOPY(cip, rejp, cilen); /* Move it */
hendrikvincent 0:05ccbd4f84f1 1598 }
hendrikvincent 0:05ccbd4f84f1 1599 INCPTR(cilen, rejp); /* Update output pointer */
hendrikvincent 0:05ccbd4f84f1 1600 }
hendrikvincent 0:05ccbd4f84f1 1601 }
hendrikvincent 0:05ccbd4f84f1 1602
hendrikvincent 0:05ccbd4f84f1 1603 /*
hendrikvincent 0:05ccbd4f84f1 1604 * If we wanted to send additional NAKs (for unsent CIs), the
hendrikvincent 0:05ccbd4f84f1 1605 * code would go here. The extra NAKs would go at *nakp.
hendrikvincent 0:05ccbd4f84f1 1606 * At present there are no cases where we want to ask the
hendrikvincent 0:05ccbd4f84f1 1607 * peer to negotiate an option.
hendrikvincent 0:05ccbd4f84f1 1608 */
hendrikvincent 0:05ccbd4f84f1 1609
hendrikvincent 0:05ccbd4f84f1 1610 switch (rc) {
hendrikvincent 0:05ccbd4f84f1 1611 case CONFACK:
hendrikvincent 0:05ccbd4f84f1 1612 *lenp = (int)(next - inp);
hendrikvincent 0:05ccbd4f84f1 1613 break;
hendrikvincent 0:05ccbd4f84f1 1614 case CONFNAK:
hendrikvincent 0:05ccbd4f84f1 1615 /*
hendrikvincent 0:05ccbd4f84f1 1616 * Copy the Nak'd options from the nak_buffer to the caller's buffer.
hendrikvincent 0:05ccbd4f84f1 1617 */
hendrikvincent 0:05ccbd4f84f1 1618 *lenp = (int)(nakp - nak_buffer);
hendrikvincent 0:05ccbd4f84f1 1619 BCOPY(nak_buffer, inp, *lenp);
hendrikvincent 0:05ccbd4f84f1 1620 break;
hendrikvincent 0:05ccbd4f84f1 1621 case CONFREJ:
hendrikvincent 0:05ccbd4f84f1 1622 *lenp = (int)(rejp - inp);
hendrikvincent 0:05ccbd4f84f1 1623 break;
hendrikvincent 0:05ccbd4f84f1 1624 }
hendrikvincent 0:05ccbd4f84f1 1625
hendrikvincent 0:05ccbd4f84f1 1626 #if TRACELCP > 0
hendrikvincent 0:05ccbd4f84f1 1627 if (traceNdx > 0) {
hendrikvincent 0:05ccbd4f84f1 1628 LCPDEBUG(LOG_INFO, ("lcp_reqci: %s\n", traceBuf));
hendrikvincent 0:05ccbd4f84f1 1629 }
hendrikvincent 0:05ccbd4f84f1 1630 #endif
hendrikvincent 0:05ccbd4f84f1 1631 LCPDEBUG(LOG_INFO, ("lcp_reqci: returning CONF%s.\n", CODENAME(rc)));
hendrikvincent 0:05ccbd4f84f1 1632 return (rc); /* Return final code */
hendrikvincent 0:05ccbd4f84f1 1633 }
hendrikvincent 0:05ccbd4f84f1 1634
hendrikvincent 0:05ccbd4f84f1 1635
hendrikvincent 0:05ccbd4f84f1 1636 /*
hendrikvincent 0:05ccbd4f84f1 1637 * lcp_up - LCP has come UP.
hendrikvincent 0:05ccbd4f84f1 1638 */
hendrikvincent 0:05ccbd4f84f1 1639 static void
hendrikvincent 0:05ccbd4f84f1 1640 lcp_up(fsm *f)
hendrikvincent 0:05ccbd4f84f1 1641 {
hendrikvincent 0:05ccbd4f84f1 1642 lcp_options *wo = &lcp_wantoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 1643 lcp_options *ho = &lcp_hisoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 1644 lcp_options *go = &lcp_gotoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 1645 lcp_options *ao = &lcp_allowoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 1646
hendrikvincent 0:05ccbd4f84f1 1647 if (!go->neg_magicnumber) {
hendrikvincent 0:05ccbd4f84f1 1648 go->magicnumber = 0;
hendrikvincent 0:05ccbd4f84f1 1649 }
hendrikvincent 0:05ccbd4f84f1 1650 if (!ho->neg_magicnumber) {
hendrikvincent 0:05ccbd4f84f1 1651 ho->magicnumber = 0;
hendrikvincent 0:05ccbd4f84f1 1652 }
hendrikvincent 0:05ccbd4f84f1 1653
hendrikvincent 0:05ccbd4f84f1 1654 /*
hendrikvincent 0:05ccbd4f84f1 1655 * Set our MTU to the smaller of the MTU we wanted and
hendrikvincent 0:05ccbd4f84f1 1656 * the MRU our peer wanted. If we negotiated an MRU,
hendrikvincent 0:05ccbd4f84f1 1657 * set our MRU to the larger of value we wanted and
hendrikvincent 0:05ccbd4f84f1 1658 * the value we got in the negotiation.
hendrikvincent 0:05ccbd4f84f1 1659 */
hendrikvincent 0:05ccbd4f84f1 1660 ppp_send_config(f->unit, LWIP_MIN(ao->mru, (ho->neg_mru? ho->mru: PPP_MRU)),
hendrikvincent 0:05ccbd4f84f1 1661 (ho->neg_asyncmap? ho->asyncmap: 0xffffffffl),
hendrikvincent 0:05ccbd4f84f1 1662 ho->neg_pcompression, ho->neg_accompression);
hendrikvincent 0:05ccbd4f84f1 1663 /*
hendrikvincent 0:05ccbd4f84f1 1664 * If the asyncmap hasn't been negotiated, we really should
hendrikvincent 0:05ccbd4f84f1 1665 * set the receive asyncmap to ffffffff, but we set it to 0
hendrikvincent 0:05ccbd4f84f1 1666 * for backwards contemptibility.
hendrikvincent 0:05ccbd4f84f1 1667 */
hendrikvincent 0:05ccbd4f84f1 1668 ppp_recv_config(f->unit, (go->neg_mru? LWIP_MAX(wo->mru, go->mru): PPP_MRU),
hendrikvincent 0:05ccbd4f84f1 1669 (go->neg_asyncmap? go->asyncmap: 0x00000000),
hendrikvincent 0:05ccbd4f84f1 1670 go->neg_pcompression, go->neg_accompression);
hendrikvincent 0:05ccbd4f84f1 1671
hendrikvincent 0:05ccbd4f84f1 1672 if (ho->neg_mru) {
hendrikvincent 0:05ccbd4f84f1 1673 peer_mru[f->unit] = ho->mru;
hendrikvincent 0:05ccbd4f84f1 1674 }
hendrikvincent 0:05ccbd4f84f1 1675
hendrikvincent 0:05ccbd4f84f1 1676 lcp_echo_lowerup(f->unit); /* Enable echo messages */
hendrikvincent 0:05ccbd4f84f1 1677
hendrikvincent 0:05ccbd4f84f1 1678 link_established(f->unit); /* The link is up; authenticate now */
hendrikvincent 0:05ccbd4f84f1 1679 }
hendrikvincent 0:05ccbd4f84f1 1680
hendrikvincent 0:05ccbd4f84f1 1681
hendrikvincent 0:05ccbd4f84f1 1682 /*
hendrikvincent 0:05ccbd4f84f1 1683 * lcp_down - LCP has gone DOWN.
hendrikvincent 0:05ccbd4f84f1 1684 *
hendrikvincent 0:05ccbd4f84f1 1685 * Alert other protocols.
hendrikvincent 0:05ccbd4f84f1 1686 */
hendrikvincent 0:05ccbd4f84f1 1687 static void
hendrikvincent 0:05ccbd4f84f1 1688 lcp_down(fsm *f)
hendrikvincent 0:05ccbd4f84f1 1689 {
hendrikvincent 0:05ccbd4f84f1 1690 lcp_options *go = &lcp_gotoptions[f->unit];
hendrikvincent 0:05ccbd4f84f1 1691
hendrikvincent 0:05ccbd4f84f1 1692 lcp_echo_lowerdown(f->unit);
hendrikvincent 0:05ccbd4f84f1 1693
hendrikvincent 0:05ccbd4f84f1 1694 link_down(f->unit);
hendrikvincent 0:05ccbd4f84f1 1695
hendrikvincent 0:05ccbd4f84f1 1696 ppp_send_config(f->unit, PPP_MRU, 0xffffffffl, 0, 0);
hendrikvincent 0:05ccbd4f84f1 1697 ppp_recv_config(f->unit, PPP_MRU,
hendrikvincent 0:05ccbd4f84f1 1698 (go->neg_asyncmap? go->asyncmap: 0x00000000),
hendrikvincent 0:05ccbd4f84f1 1699 go->neg_pcompression, go->neg_accompression);
hendrikvincent 0:05ccbd4f84f1 1700 peer_mru[f->unit] = PPP_MRU;
hendrikvincent 0:05ccbd4f84f1 1701 }
hendrikvincent 0:05ccbd4f84f1 1702
hendrikvincent 0:05ccbd4f84f1 1703
hendrikvincent 0:05ccbd4f84f1 1704 /*
hendrikvincent 0:05ccbd4f84f1 1705 * lcp_starting - LCP needs the lower layer up.
hendrikvincent 0:05ccbd4f84f1 1706 */
hendrikvincent 0:05ccbd4f84f1 1707 static void
hendrikvincent 0:05ccbd4f84f1 1708 lcp_starting(fsm *f)
hendrikvincent 0:05ccbd4f84f1 1709 {
hendrikvincent 0:05ccbd4f84f1 1710 link_required(f->unit); /* lwip: currently does nothing */
hendrikvincent 0:05ccbd4f84f1 1711 }
hendrikvincent 0:05ccbd4f84f1 1712
hendrikvincent 0:05ccbd4f84f1 1713
hendrikvincent 0:05ccbd4f84f1 1714 /*
hendrikvincent 0:05ccbd4f84f1 1715 * lcp_finished - LCP has finished with the lower layer.
hendrikvincent 0:05ccbd4f84f1 1716 */
hendrikvincent 0:05ccbd4f84f1 1717 static void
hendrikvincent 0:05ccbd4f84f1 1718 lcp_finished(fsm *f)
hendrikvincent 0:05ccbd4f84f1 1719 {
hendrikvincent 0:05ccbd4f84f1 1720 link_terminated(f->unit); /* we are finished with the link */
hendrikvincent 0:05ccbd4f84f1 1721 }
hendrikvincent 0:05ccbd4f84f1 1722
hendrikvincent 0:05ccbd4f84f1 1723
hendrikvincent 0:05ccbd4f84f1 1724 #if PPP_ADDITIONAL_CALLBACKS
hendrikvincent 0:05ccbd4f84f1 1725 /*
hendrikvincent 0:05ccbd4f84f1 1726 * print_string - print a readable representation of a string using
hendrikvincent 0:05ccbd4f84f1 1727 * printer.
hendrikvincent 0:05ccbd4f84f1 1728 */
hendrikvincent 0:05ccbd4f84f1 1729 static void
hendrikvincent 0:05ccbd4f84f1 1730 print_string( char *p, int len, void (*printer) (void *, char *, ...), void *arg)
hendrikvincent 0:05ccbd4f84f1 1731 {
hendrikvincent 0:05ccbd4f84f1 1732 int c;
hendrikvincent 0:05ccbd4f84f1 1733
hendrikvincent 0:05ccbd4f84f1 1734 printer(arg, "\"");
hendrikvincent 0:05ccbd4f84f1 1735 for (; len > 0; --len) {
hendrikvincent 0:05ccbd4f84f1 1736 c = *p++;
hendrikvincent 0:05ccbd4f84f1 1737 if (' ' <= c && c <= '~') {
hendrikvincent 0:05ccbd4f84f1 1738 if (c == '\\' || c == '"') {
hendrikvincent 0:05ccbd4f84f1 1739 printer(arg, "\\");
hendrikvincent 0:05ccbd4f84f1 1740 }
hendrikvincent 0:05ccbd4f84f1 1741 printer(arg, "%c", c);
hendrikvincent 0:05ccbd4f84f1 1742 } else {
hendrikvincent 0:05ccbd4f84f1 1743 switch (c) {
hendrikvincent 0:05ccbd4f84f1 1744 case '\n':
hendrikvincent 0:05ccbd4f84f1 1745 printer(arg, "\\n");
hendrikvincent 0:05ccbd4f84f1 1746 break;
hendrikvincent 0:05ccbd4f84f1 1747 case '\r':
hendrikvincent 0:05ccbd4f84f1 1748 printer(arg, "\\r");
hendrikvincent 0:05ccbd4f84f1 1749 break;
hendrikvincent 0:05ccbd4f84f1 1750 case '\t':
hendrikvincent 0:05ccbd4f84f1 1751 printer(arg, "\\t");
hendrikvincent 0:05ccbd4f84f1 1752 break;
hendrikvincent 0:05ccbd4f84f1 1753 default:
hendrikvincent 0:05ccbd4f84f1 1754 printer(arg, "\\%.3o", c);
hendrikvincent 0:05ccbd4f84f1 1755 }
hendrikvincent 0:05ccbd4f84f1 1756 }
hendrikvincent 0:05ccbd4f84f1 1757 }
hendrikvincent 0:05ccbd4f84f1 1758 printer(arg, "\"");
hendrikvincent 0:05ccbd4f84f1 1759 }
hendrikvincent 0:05ccbd4f84f1 1760
hendrikvincent 0:05ccbd4f84f1 1761
hendrikvincent 0:05ccbd4f84f1 1762 /*
hendrikvincent 0:05ccbd4f84f1 1763 * lcp_printpkt - print the contents of an LCP packet.
hendrikvincent 0:05ccbd4f84f1 1764 */
hendrikvincent 0:05ccbd4f84f1 1765 static char *lcp_codenames[] = {
hendrikvincent 0:05ccbd4f84f1 1766 "ConfReq", "ConfAck", "ConfNak", "ConfRej",
hendrikvincent 0:05ccbd4f84f1 1767 "TermReq", "TermAck", "CodeRej", "ProtRej",
hendrikvincent 0:05ccbd4f84f1 1768 "EchoReq", "EchoRep", "DiscReq"
hendrikvincent 0:05ccbd4f84f1 1769 };
hendrikvincent 0:05ccbd4f84f1 1770
hendrikvincent 0:05ccbd4f84f1 1771 static int
hendrikvincent 0:05ccbd4f84f1 1772 lcp_printpkt( u_char *p, int plen, void (*printer) (void *, char *, ...), void *arg)
hendrikvincent 0:05ccbd4f84f1 1773 {
hendrikvincent 0:05ccbd4f84f1 1774 int code, id, len, olen;
hendrikvincent 0:05ccbd4f84f1 1775 u_char *pstart, *optend;
hendrikvincent 0:05ccbd4f84f1 1776 u_short cishort;
hendrikvincent 0:05ccbd4f84f1 1777 u32_t cilong;
hendrikvincent 0:05ccbd4f84f1 1778
hendrikvincent 0:05ccbd4f84f1 1779 if (plen < HEADERLEN) {
hendrikvincent 0:05ccbd4f84f1 1780 return 0;
hendrikvincent 0:05ccbd4f84f1 1781 }
hendrikvincent 0:05ccbd4f84f1 1782 pstart = p;
hendrikvincent 0:05ccbd4f84f1 1783 GETCHAR(code, p);
hendrikvincent 0:05ccbd4f84f1 1784 GETCHAR(id, p);
hendrikvincent 0:05ccbd4f84f1 1785 GETSHORT(len, p);
hendrikvincent 0:05ccbd4f84f1 1786 if (len < HEADERLEN || len > plen) {
hendrikvincent 0:05ccbd4f84f1 1787 return 0;
hendrikvincent 0:05ccbd4f84f1 1788 }
hendrikvincent 0:05ccbd4f84f1 1789
hendrikvincent 0:05ccbd4f84f1 1790 if (code >= 1 && code <= sizeof(lcp_codenames) / sizeof(char *)) {
hendrikvincent 0:05ccbd4f84f1 1791 printer(arg, " %s", lcp_codenames[code-1]);
hendrikvincent 0:05ccbd4f84f1 1792 } else {
hendrikvincent 0:05ccbd4f84f1 1793 printer(arg, " code=0x%x", code);
hendrikvincent 0:05ccbd4f84f1 1794 }
hendrikvincent 0:05ccbd4f84f1 1795 printer(arg, " id=0x%x", id);
hendrikvincent 0:05ccbd4f84f1 1796 len -= HEADERLEN;
hendrikvincent 0:05ccbd4f84f1 1797 switch (code) {
hendrikvincent 0:05ccbd4f84f1 1798 case CONFREQ:
hendrikvincent 0:05ccbd4f84f1 1799 case CONFACK:
hendrikvincent 0:05ccbd4f84f1 1800 case CONFNAK:
hendrikvincent 0:05ccbd4f84f1 1801 case CONFREJ:
hendrikvincent 0:05ccbd4f84f1 1802 /* print option list */
hendrikvincent 0:05ccbd4f84f1 1803 while (len >= 2) {
hendrikvincent 0:05ccbd4f84f1 1804 GETCHAR(code, p);
hendrikvincent 0:05ccbd4f84f1 1805 GETCHAR(olen, p);
hendrikvincent 0:05ccbd4f84f1 1806 p -= 2;
hendrikvincent 0:05ccbd4f84f1 1807 if (olen < 2 || olen > len) {
hendrikvincent 0:05ccbd4f84f1 1808 break;
hendrikvincent 0:05ccbd4f84f1 1809 }
hendrikvincent 0:05ccbd4f84f1 1810 printer(arg, " <");
hendrikvincent 0:05ccbd4f84f1 1811 len -= olen;
hendrikvincent 0:05ccbd4f84f1 1812 optend = p + olen;
hendrikvincent 0:05ccbd4f84f1 1813 switch (code) {
hendrikvincent 0:05ccbd4f84f1 1814 case CI_MRU:
hendrikvincent 0:05ccbd4f84f1 1815 if (olen == CILEN_SHORT) {
hendrikvincent 0:05ccbd4f84f1 1816 p += 2;
hendrikvincent 0:05ccbd4f84f1 1817 GETSHORT(cishort, p);
hendrikvincent 0:05ccbd4f84f1 1818 printer(arg, "mru %d", cishort);
hendrikvincent 0:05ccbd4f84f1 1819 }
hendrikvincent 0:05ccbd4f84f1 1820 break;
hendrikvincent 0:05ccbd4f84f1 1821 case CI_ASYNCMAP:
hendrikvincent 0:05ccbd4f84f1 1822 if (olen == CILEN_LONG) {
hendrikvincent 0:05ccbd4f84f1 1823 p += 2;
hendrikvincent 0:05ccbd4f84f1 1824 GETLONG(cilong, p);
hendrikvincent 0:05ccbd4f84f1 1825 printer(arg, "asyncmap 0x%lx", cilong);
hendrikvincent 0:05ccbd4f84f1 1826 }
hendrikvincent 0:05ccbd4f84f1 1827 break;
hendrikvincent 0:05ccbd4f84f1 1828 case CI_AUTHTYPE:
hendrikvincent 0:05ccbd4f84f1 1829 if (olen >= CILEN_SHORT) {
hendrikvincent 0:05ccbd4f84f1 1830 p += 2;
hendrikvincent 0:05ccbd4f84f1 1831 printer(arg, "auth ");
hendrikvincent 0:05ccbd4f84f1 1832 GETSHORT(cishort, p);
hendrikvincent 0:05ccbd4f84f1 1833 switch (cishort) {
hendrikvincent 0:05ccbd4f84f1 1834 case PPP_PAP:
hendrikvincent 0:05ccbd4f84f1 1835 printer(arg, "pap");
hendrikvincent 0:05ccbd4f84f1 1836 break;
hendrikvincent 0:05ccbd4f84f1 1837 case PPP_CHAP:
hendrikvincent 0:05ccbd4f84f1 1838 printer(arg, "chap");
hendrikvincent 0:05ccbd4f84f1 1839 break;
hendrikvincent 0:05ccbd4f84f1 1840 default:
hendrikvincent 0:05ccbd4f84f1 1841 printer(arg, "0x%x", cishort);
hendrikvincent 0:05ccbd4f84f1 1842 }
hendrikvincent 0:05ccbd4f84f1 1843 }
hendrikvincent 0:05ccbd4f84f1 1844 break;
hendrikvincent 0:05ccbd4f84f1 1845 case CI_QUALITY:
hendrikvincent 0:05ccbd4f84f1 1846 if (olen >= CILEN_SHORT) {
hendrikvincent 0:05ccbd4f84f1 1847 p += 2;
hendrikvincent 0:05ccbd4f84f1 1848 printer(arg, "quality ");
hendrikvincent 0:05ccbd4f84f1 1849 GETSHORT(cishort, p);
hendrikvincent 0:05ccbd4f84f1 1850 switch (cishort) {
hendrikvincent 0:05ccbd4f84f1 1851 case PPP_LQR:
hendrikvincent 0:05ccbd4f84f1 1852 printer(arg, "lqr");
hendrikvincent 0:05ccbd4f84f1 1853 break;
hendrikvincent 0:05ccbd4f84f1 1854 default:
hendrikvincent 0:05ccbd4f84f1 1855 printer(arg, "0x%x", cishort);
hendrikvincent 0:05ccbd4f84f1 1856 }
hendrikvincent 0:05ccbd4f84f1 1857 }
hendrikvincent 0:05ccbd4f84f1 1858 break;
hendrikvincent 0:05ccbd4f84f1 1859 case CI_CALLBACK:
hendrikvincent 0:05ccbd4f84f1 1860 if (olen >= CILEN_CHAR) {
hendrikvincent 0:05ccbd4f84f1 1861 p += 2;
hendrikvincent 0:05ccbd4f84f1 1862 printer(arg, "callback ");
hendrikvincent 0:05ccbd4f84f1 1863 GETSHORT(cishort, p);
hendrikvincent 0:05ccbd4f84f1 1864 switch (cishort) {
hendrikvincent 0:05ccbd4f84f1 1865 case CBCP_OPT:
hendrikvincent 0:05ccbd4f84f1 1866 printer(arg, "CBCP");
hendrikvincent 0:05ccbd4f84f1 1867 break;
hendrikvincent 0:05ccbd4f84f1 1868 default:
hendrikvincent 0:05ccbd4f84f1 1869 printer(arg, "0x%x", cishort);
hendrikvincent 0:05ccbd4f84f1 1870 }
hendrikvincent 0:05ccbd4f84f1 1871 }
hendrikvincent 0:05ccbd4f84f1 1872 break;
hendrikvincent 0:05ccbd4f84f1 1873 case CI_MAGICNUMBER:
hendrikvincent 0:05ccbd4f84f1 1874 if (olen == CILEN_LONG) {
hendrikvincent 0:05ccbd4f84f1 1875 p += 2;
hendrikvincent 0:05ccbd4f84f1 1876 GETLONG(cilong, p);
hendrikvincent 0:05ccbd4f84f1 1877 printer(arg, "magic 0x%x", cilong);
hendrikvincent 0:05ccbd4f84f1 1878 }
hendrikvincent 0:05ccbd4f84f1 1879 break;
hendrikvincent 0:05ccbd4f84f1 1880 case CI_PCOMPRESSION:
hendrikvincent 0:05ccbd4f84f1 1881 if (olen == CILEN_VOID) {
hendrikvincent 0:05ccbd4f84f1 1882 p += 2;
hendrikvincent 0:05ccbd4f84f1 1883 printer(arg, "pcomp");
hendrikvincent 0:05ccbd4f84f1 1884 }
hendrikvincent 0:05ccbd4f84f1 1885 break;
hendrikvincent 0:05ccbd4f84f1 1886 case CI_ACCOMPRESSION:
hendrikvincent 0:05ccbd4f84f1 1887 if (olen == CILEN_VOID) {
hendrikvincent 0:05ccbd4f84f1 1888 p += 2;
hendrikvincent 0:05ccbd4f84f1 1889 printer(arg, "accomp");
hendrikvincent 0:05ccbd4f84f1 1890 }
hendrikvincent 0:05ccbd4f84f1 1891 break;
hendrikvincent 0:05ccbd4f84f1 1892 }
hendrikvincent 0:05ccbd4f84f1 1893 while (p < optend) {
hendrikvincent 0:05ccbd4f84f1 1894 GETCHAR(code, p);
hendrikvincent 0:05ccbd4f84f1 1895 printer(arg, " %.2x", code);
hendrikvincent 0:05ccbd4f84f1 1896 }
hendrikvincent 0:05ccbd4f84f1 1897 printer(arg, ">");
hendrikvincent 0:05ccbd4f84f1 1898 }
hendrikvincent 0:05ccbd4f84f1 1899 break;
hendrikvincent 0:05ccbd4f84f1 1900
hendrikvincent 0:05ccbd4f84f1 1901 case TERMACK:
hendrikvincent 0:05ccbd4f84f1 1902 case TERMREQ:
hendrikvincent 0:05ccbd4f84f1 1903 if (len > 0 && *p >= ' ' && *p < 0x7f) {
hendrikvincent 0:05ccbd4f84f1 1904 printer(arg, " ");
hendrikvincent 0:05ccbd4f84f1 1905 print_string((char*)p, len, printer, arg);
hendrikvincent 0:05ccbd4f84f1 1906 p += len;
hendrikvincent 0:05ccbd4f84f1 1907 len = 0;
hendrikvincent 0:05ccbd4f84f1 1908 }
hendrikvincent 0:05ccbd4f84f1 1909 break;
hendrikvincent 0:05ccbd4f84f1 1910
hendrikvincent 0:05ccbd4f84f1 1911 case ECHOREQ:
hendrikvincent 0:05ccbd4f84f1 1912 case ECHOREP:
hendrikvincent 0:05ccbd4f84f1 1913 case DISCREQ:
hendrikvincent 0:05ccbd4f84f1 1914 if (len >= 4) {
hendrikvincent 0:05ccbd4f84f1 1915 GETLONG(cilong, p);
hendrikvincent 0:05ccbd4f84f1 1916 printer(arg, " magic=0x%x", cilong);
hendrikvincent 0:05ccbd4f84f1 1917 p += 4;
hendrikvincent 0:05ccbd4f84f1 1918 len -= 4;
hendrikvincent 0:05ccbd4f84f1 1919 }
hendrikvincent 0:05ccbd4f84f1 1920 break;
hendrikvincent 0:05ccbd4f84f1 1921 }
hendrikvincent 0:05ccbd4f84f1 1922
hendrikvincent 0:05ccbd4f84f1 1923 /* print the rest of the bytes in the packet */
hendrikvincent 0:05ccbd4f84f1 1924 for (; len > 0; --len) {
hendrikvincent 0:05ccbd4f84f1 1925 GETCHAR(code, p);
hendrikvincent 0:05ccbd4f84f1 1926 printer(arg, " %.2x", code);
hendrikvincent 0:05ccbd4f84f1 1927 }
hendrikvincent 0:05ccbd4f84f1 1928
hendrikvincent 0:05ccbd4f84f1 1929 return (int)(p - pstart);
hendrikvincent 0:05ccbd4f84f1 1930 }
hendrikvincent 0:05ccbd4f84f1 1931 #endif /* PPP_ADDITIONAL_CALLBACKS */
hendrikvincent 0:05ccbd4f84f1 1932
hendrikvincent 0:05ccbd4f84f1 1933 /*
hendrikvincent 0:05ccbd4f84f1 1934 * Time to shut down the link because there is nothing out there.
hendrikvincent 0:05ccbd4f84f1 1935 */
hendrikvincent 0:05ccbd4f84f1 1936 static void
hendrikvincent 0:05ccbd4f84f1 1937 LcpLinkFailure (fsm *f)
hendrikvincent 0:05ccbd4f84f1 1938 {
hendrikvincent 0:05ccbd4f84f1 1939 if (f->state == LS_OPENED) {
hendrikvincent 0:05ccbd4f84f1 1940 LCPDEBUG(LOG_INFO, ("No response to %d echo-requests\n", lcp_echos_pending));
hendrikvincent 0:05ccbd4f84f1 1941 LCPDEBUG(LOG_NOTICE, ("Serial link appears to be disconnected.\n"));
hendrikvincent 0:05ccbd4f84f1 1942 lcp_close(f->unit, "Peer not responding");
hendrikvincent 0:05ccbd4f84f1 1943 }
hendrikvincent 0:05ccbd4f84f1 1944 }
hendrikvincent 0:05ccbd4f84f1 1945
hendrikvincent 0:05ccbd4f84f1 1946 /*
hendrikvincent 0:05ccbd4f84f1 1947 * Timer expired for the LCP echo requests from this process.
hendrikvincent 0:05ccbd4f84f1 1948 */
hendrikvincent 0:05ccbd4f84f1 1949 static void
hendrikvincent 0:05ccbd4f84f1 1950 LcpEchoCheck (fsm *f)
hendrikvincent 0:05ccbd4f84f1 1951 {
hendrikvincent 0:05ccbd4f84f1 1952 LcpSendEchoRequest (f);
hendrikvincent 0:05ccbd4f84f1 1953
hendrikvincent 0:05ccbd4f84f1 1954 /*
hendrikvincent 0:05ccbd4f84f1 1955 * Start the timer for the next interval.
hendrikvincent 0:05ccbd4f84f1 1956 */
hendrikvincent 0:05ccbd4f84f1 1957 LWIP_ASSERT("lcp_echo_timer_running == 0", lcp_echo_timer_running == 0);
hendrikvincent 0:05ccbd4f84f1 1958
hendrikvincent 0:05ccbd4f84f1 1959 TIMEOUT (LcpEchoTimeout, f, lcp_echo_interval);
hendrikvincent 0:05ccbd4f84f1 1960 lcp_echo_timer_running = 1;
hendrikvincent 0:05ccbd4f84f1 1961 }
hendrikvincent 0:05ccbd4f84f1 1962
hendrikvincent 0:05ccbd4f84f1 1963 /*
hendrikvincent 0:05ccbd4f84f1 1964 * LcpEchoTimeout - Timer expired on the LCP echo
hendrikvincent 0:05ccbd4f84f1 1965 */
hendrikvincent 0:05ccbd4f84f1 1966 static void
hendrikvincent 0:05ccbd4f84f1 1967 LcpEchoTimeout (void *arg)
hendrikvincent 0:05ccbd4f84f1 1968 {
hendrikvincent 0:05ccbd4f84f1 1969 if (lcp_echo_timer_running != 0) {
hendrikvincent 0:05ccbd4f84f1 1970 lcp_echo_timer_running = 0;
hendrikvincent 0:05ccbd4f84f1 1971 LcpEchoCheck ((fsm *) arg);
hendrikvincent 0:05ccbd4f84f1 1972 }
hendrikvincent 0:05ccbd4f84f1 1973 }
hendrikvincent 0:05ccbd4f84f1 1974
hendrikvincent 0:05ccbd4f84f1 1975 /*
hendrikvincent 0:05ccbd4f84f1 1976 * LcpEchoReply - LCP has received a reply to the echo
hendrikvincent 0:05ccbd4f84f1 1977 */
hendrikvincent 0:05ccbd4f84f1 1978 static void
hendrikvincent 0:05ccbd4f84f1 1979 lcp_received_echo_reply (fsm *f, int id, u_char *inp, int len)
hendrikvincent 0:05ccbd4f84f1 1980 {
hendrikvincent 0:05ccbd4f84f1 1981 u32_t magic;
hendrikvincent 0:05ccbd4f84f1 1982
hendrikvincent 0:05ccbd4f84f1 1983 LWIP_UNUSED_ARG(id);
hendrikvincent 0:05ccbd4f84f1 1984
hendrikvincent 0:05ccbd4f84f1 1985 /* Check the magic number - don't count replies from ourselves. */
hendrikvincent 0:05ccbd4f84f1 1986 if (len < 4) {
hendrikvincent 0:05ccbd4f84f1 1987 LCPDEBUG(LOG_WARNING, ("lcp: received short Echo-Reply, length %d\n", len));
hendrikvincent 0:05ccbd4f84f1 1988 return;
hendrikvincent 0:05ccbd4f84f1 1989 }
hendrikvincent 0:05ccbd4f84f1 1990 GETLONG(magic, inp);
hendrikvincent 0:05ccbd4f84f1 1991 if (lcp_gotoptions[f->unit].neg_magicnumber && magic == lcp_gotoptions[f->unit].magicnumber) {
hendrikvincent 0:05ccbd4f84f1 1992 LCPDEBUG(LOG_WARNING, ("appear to have received our own echo-reply!\n"));
hendrikvincent 0:05ccbd4f84f1 1993 return;
hendrikvincent 0:05ccbd4f84f1 1994 }
hendrikvincent 0:05ccbd4f84f1 1995
hendrikvincent 0:05ccbd4f84f1 1996 /* Reset the number of outstanding echo frames */
hendrikvincent 0:05ccbd4f84f1 1997 lcp_echos_pending = 0;
hendrikvincent 0:05ccbd4f84f1 1998 }
hendrikvincent 0:05ccbd4f84f1 1999
hendrikvincent 0:05ccbd4f84f1 2000 /*
hendrikvincent 0:05ccbd4f84f1 2001 * LcpSendEchoRequest - Send an echo request frame to the peer
hendrikvincent 0:05ccbd4f84f1 2002 */
hendrikvincent 0:05ccbd4f84f1 2003 static void
hendrikvincent 0:05ccbd4f84f1 2004 LcpSendEchoRequest (fsm *f)
hendrikvincent 0:05ccbd4f84f1 2005 {
hendrikvincent 0:05ccbd4f84f1 2006 u32_t lcp_magic;
hendrikvincent 0:05ccbd4f84f1 2007 u_char pkt[4], *pktp;
hendrikvincent 0:05ccbd4f84f1 2008
hendrikvincent 0:05ccbd4f84f1 2009 /*
hendrikvincent 0:05ccbd4f84f1 2010 * Detect the failure of the peer at this point.
hendrikvincent 0:05ccbd4f84f1 2011 */
hendrikvincent 0:05ccbd4f84f1 2012 if (lcp_echo_fails != 0) {
hendrikvincent 0:05ccbd4f84f1 2013 if (lcp_echos_pending >= lcp_echo_fails) {
hendrikvincent 0:05ccbd4f84f1 2014 LcpLinkFailure(f);
hendrikvincent 0:05ccbd4f84f1 2015 lcp_echos_pending = 0;
hendrikvincent 0:05ccbd4f84f1 2016 }
hendrikvincent 0:05ccbd4f84f1 2017 }
hendrikvincent 0:05ccbd4f84f1 2018
hendrikvincent 0:05ccbd4f84f1 2019 /*
hendrikvincent 0:05ccbd4f84f1 2020 * Make and send the echo request frame.
hendrikvincent 0:05ccbd4f84f1 2021 */
hendrikvincent 0:05ccbd4f84f1 2022 if (f->state == LS_OPENED) {
hendrikvincent 0:05ccbd4f84f1 2023 lcp_magic = lcp_gotoptions[f->unit].magicnumber;
hendrikvincent 0:05ccbd4f84f1 2024 pktp = pkt;
hendrikvincent 0:05ccbd4f84f1 2025 PUTLONG(lcp_magic, pktp);
hendrikvincent 0:05ccbd4f84f1 2026 fsm_sdata(f, ECHOREQ, (u_char)(lcp_echo_number++ & 0xFF), pkt, (int)(pktp - pkt));
hendrikvincent 0:05ccbd4f84f1 2027 ++lcp_echos_pending;
hendrikvincent 0:05ccbd4f84f1 2028 }
hendrikvincent 0:05ccbd4f84f1 2029 }
hendrikvincent 0:05ccbd4f84f1 2030
hendrikvincent 0:05ccbd4f84f1 2031 /*
hendrikvincent 0:05ccbd4f84f1 2032 * lcp_echo_lowerup - Start the timer for the LCP frame
hendrikvincent 0:05ccbd4f84f1 2033 */
hendrikvincent 0:05ccbd4f84f1 2034
hendrikvincent 0:05ccbd4f84f1 2035 static void
hendrikvincent 0:05ccbd4f84f1 2036 lcp_echo_lowerup (int unit)
hendrikvincent 0:05ccbd4f84f1 2037 {
hendrikvincent 0:05ccbd4f84f1 2038 fsm *f = &lcp_fsm[unit];
hendrikvincent 0:05ccbd4f84f1 2039
hendrikvincent 0:05ccbd4f84f1 2040 /* Clear the parameters for generating echo frames */
hendrikvincent 0:05ccbd4f84f1 2041 lcp_echos_pending = 0;
hendrikvincent 0:05ccbd4f84f1 2042 lcp_echo_number = 0;
hendrikvincent 0:05ccbd4f84f1 2043 lcp_echo_timer_running = 0;
hendrikvincent 0:05ccbd4f84f1 2044
hendrikvincent 0:05ccbd4f84f1 2045 /* If a timeout interval is specified then start the timer */
hendrikvincent 0:05ccbd4f84f1 2046 if (lcp_echo_interval != 0) {
hendrikvincent 0:05ccbd4f84f1 2047 LcpEchoCheck (f);
hendrikvincent 0:05ccbd4f84f1 2048 }
hendrikvincent 0:05ccbd4f84f1 2049 }
hendrikvincent 0:05ccbd4f84f1 2050
hendrikvincent 0:05ccbd4f84f1 2051 /*
hendrikvincent 0:05ccbd4f84f1 2052 * lcp_echo_lowerdown - Stop the timer for the LCP frame
hendrikvincent 0:05ccbd4f84f1 2053 */
hendrikvincent 0:05ccbd4f84f1 2054
hendrikvincent 0:05ccbd4f84f1 2055 static void
hendrikvincent 0:05ccbd4f84f1 2056 lcp_echo_lowerdown (int unit)
hendrikvincent 0:05ccbd4f84f1 2057 {
hendrikvincent 0:05ccbd4f84f1 2058 fsm *f = &lcp_fsm[unit];
hendrikvincent 0:05ccbd4f84f1 2059
hendrikvincent 0:05ccbd4f84f1 2060 if (lcp_echo_timer_running != 0) {
hendrikvincent 0:05ccbd4f84f1 2061 UNTIMEOUT (LcpEchoTimeout, f);
hendrikvincent 0:05ccbd4f84f1 2062 lcp_echo_timer_running = 0;
hendrikvincent 0:05ccbd4f84f1 2063 }
hendrikvincent 0:05ccbd4f84f1 2064 }
hendrikvincent 0:05ccbd4f84f1 2065
hendrikvincent 0:05ccbd4f84f1 2066 #endif /* PPP_SUPPORT */