wip
Dependents: EthernetInterface_vz
Fork of lwip by
netif/ppp/lcp.c@30:cb9095482c25, 2015-04-07 (annotated)
- Committer:
- klauss
- Date:
- Tue Apr 07 14:27:01 2015 +0000
- Revision:
- 30:cb9095482c25
- Parent:
- 4:f71f5d9d5846
wip
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 0:51ac1d130fd4 | 1 | /***************************************************************************** |
mbed_official | 0:51ac1d130fd4 | 2 | * lcp.c - Network Link Control Protocol program file. |
mbed_official | 0:51ac1d130fd4 | 3 | * |
mbed_official | 0:51ac1d130fd4 | 4 | * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc. |
mbed_official | 0:51ac1d130fd4 | 5 | * portions Copyright (c) 1997 by Global Election Systems Inc. |
mbed_official | 0:51ac1d130fd4 | 6 | * |
mbed_official | 0:51ac1d130fd4 | 7 | * The authors hereby grant permission to use, copy, modify, distribute, |
mbed_official | 0:51ac1d130fd4 | 8 | * and license this software and its documentation for any purpose, provided |
mbed_official | 0:51ac1d130fd4 | 9 | * that existing copyright notices are retained in all copies and that this |
mbed_official | 0:51ac1d130fd4 | 10 | * notice and the following disclaimer are included verbatim in any |
mbed_official | 0:51ac1d130fd4 | 11 | * distributions. No written agreement, license, or royalty fee is required |
mbed_official | 0:51ac1d130fd4 | 12 | * for any of the authorized uses. |
mbed_official | 0:51ac1d130fd4 | 13 | * |
mbed_official | 0:51ac1d130fd4 | 14 | * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR |
mbed_official | 0:51ac1d130fd4 | 15 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
mbed_official | 0:51ac1d130fd4 | 16 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
mbed_official | 0:51ac1d130fd4 | 17 | * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
mbed_official | 0:51ac1d130fd4 | 18 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
mbed_official | 0:51ac1d130fd4 | 19 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
mbed_official | 0:51ac1d130fd4 | 20 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
mbed_official | 0:51ac1d130fd4 | 21 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
mbed_official | 0:51ac1d130fd4 | 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
mbed_official | 0:51ac1d130fd4 | 23 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 0:51ac1d130fd4 | 24 | * |
mbed_official | 0:51ac1d130fd4 | 25 | ****************************************************************************** |
mbed_official | 0:51ac1d130fd4 | 26 | * REVISION HISTORY |
mbed_official | 0:51ac1d130fd4 | 27 | * |
mbed_official | 0:51ac1d130fd4 | 28 | * 03-01-01 Marc Boucher <marc@mbsi.ca> |
mbed_official | 0:51ac1d130fd4 | 29 | * Ported to lwIP. |
mbed_official | 0:51ac1d130fd4 | 30 | * 97-12-01 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc. |
mbed_official | 0:51ac1d130fd4 | 31 | * Original. |
mbed_official | 0:51ac1d130fd4 | 32 | *****************************************************************************/ |
mbed_official | 0:51ac1d130fd4 | 33 | |
mbed_official | 0:51ac1d130fd4 | 34 | /* |
mbed_official | 0:51ac1d130fd4 | 35 | * lcp.c - PPP Link Control Protocol. |
mbed_official | 0:51ac1d130fd4 | 36 | * |
mbed_official | 0:51ac1d130fd4 | 37 | * Copyright (c) 1989 Carnegie Mellon University. |
mbed_official | 0:51ac1d130fd4 | 38 | * All rights reserved. |
mbed_official | 0:51ac1d130fd4 | 39 | * |
mbed_official | 0:51ac1d130fd4 | 40 | * Redistribution and use in source and binary forms are permitted |
mbed_official | 0:51ac1d130fd4 | 41 | * provided that the above copyright notice and this paragraph are |
mbed_official | 0:51ac1d130fd4 | 42 | * duplicated in all such forms and that any documentation, |
mbed_official | 0:51ac1d130fd4 | 43 | * advertising materials, and other materials related to such |
mbed_official | 0:51ac1d130fd4 | 44 | * distribution and use acknowledge that the software was developed |
mbed_official | 0:51ac1d130fd4 | 45 | * by Carnegie Mellon University. The name of the |
mbed_official | 0:51ac1d130fd4 | 46 | * University may not be used to endorse or promote products derived |
mbed_official | 0:51ac1d130fd4 | 47 | * from this software without specific prior written permission. |
mbed_official | 0:51ac1d130fd4 | 48 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
mbed_official | 0:51ac1d130fd4 | 49 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
mbed_official | 0:51ac1d130fd4 | 50 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
mbed_official | 0:51ac1d130fd4 | 51 | */ |
mbed_official | 0:51ac1d130fd4 | 52 | |
mbed_official | 0:51ac1d130fd4 | 53 | |
mbed_official | 0:51ac1d130fd4 | 54 | #include "lwip/opt.h" |
mbed_official | 0:51ac1d130fd4 | 55 | |
mbed_official | 0:51ac1d130fd4 | 56 | #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ |
mbed_official | 0:51ac1d130fd4 | 57 | |
mbed_official | 0:51ac1d130fd4 | 58 | #include "ppp.h" |
mbed_official | 0:51ac1d130fd4 | 59 | #include "pppdebug.h" |
mbed_official | 0:51ac1d130fd4 | 60 | |
mbed_official | 0:51ac1d130fd4 | 61 | #include "fsm.h" |
mbed_official | 0:51ac1d130fd4 | 62 | #include "chap.h" |
mbed_official | 0:51ac1d130fd4 | 63 | #include "magic.h" |
mbed_official | 0:51ac1d130fd4 | 64 | #include "auth.h" |
mbed_official | 0:51ac1d130fd4 | 65 | #include "lcp.h" |
mbed_official | 0:51ac1d130fd4 | 66 | |
mbed_official | 0:51ac1d130fd4 | 67 | #include <string.h> |
mbed_official | 0:51ac1d130fd4 | 68 | |
mbed_official | 0:51ac1d130fd4 | 69 | #if PPPOE_SUPPORT |
mbed_official | 0:51ac1d130fd4 | 70 | #include "netif/ppp_oe.h" |
mbed_official | 0:51ac1d130fd4 | 71 | #else |
mbed_official | 0:51ac1d130fd4 | 72 | #define PPPOE_MAXMTU PPP_MAXMRU |
mbed_official | 0:51ac1d130fd4 | 73 | #endif |
mbed_official | 0:51ac1d130fd4 | 74 | |
mbed_official | 0:51ac1d130fd4 | 75 | #if 0 /* UNUSED */ |
mbed_official | 0:51ac1d130fd4 | 76 | /* |
mbed_official | 0:51ac1d130fd4 | 77 | * LCP-related command-line options. |
mbed_official | 0:51ac1d130fd4 | 78 | */ |
mbed_official | 0:51ac1d130fd4 | 79 | int lcp_echo_interval = 0; /* Interval between LCP echo-requests */ |
mbed_official | 0:51ac1d130fd4 | 80 | int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */ |
mbed_official | 0:51ac1d130fd4 | 81 | bool lax_recv = 0; /* accept control chars in asyncmap */ |
mbed_official | 0:51ac1d130fd4 | 82 | |
mbed_official | 0:51ac1d130fd4 | 83 | static int setescape (char **); |
mbed_official | 0:51ac1d130fd4 | 84 | |
mbed_official | 0:51ac1d130fd4 | 85 | static option_t lcp_option_list[] = { |
mbed_official | 0:51ac1d130fd4 | 86 | /* LCP options */ |
mbed_official | 0:51ac1d130fd4 | 87 | /* list stripped for simplicity */ |
mbed_official | 0:51ac1d130fd4 | 88 | {NULL} |
mbed_official | 0:51ac1d130fd4 | 89 | }; |
mbed_official | 0:51ac1d130fd4 | 90 | #endif /* UNUSED */ |
mbed_official | 0:51ac1d130fd4 | 91 | |
mbed_official | 0:51ac1d130fd4 | 92 | /* options */ |
mbed_official | 0:51ac1d130fd4 | 93 | LinkPhase lcp_phase[NUM_PPP]; /* Phase of link session (RFC 1661) */ |
mbed_official | 0:51ac1d130fd4 | 94 | static u_int lcp_echo_interval = LCP_ECHOINTERVAL; /* Interval between LCP echo-requests */ |
mbed_official | 0:51ac1d130fd4 | 95 | static u_int lcp_echo_fails = LCP_MAXECHOFAILS; /* Tolerance to unanswered echo-requests */ |
mbed_official | 0:51ac1d130fd4 | 96 | |
mbed_official | 0:51ac1d130fd4 | 97 | /* global vars */ |
mbed_official | 0:51ac1d130fd4 | 98 | static fsm lcp_fsm[NUM_PPP]; /* LCP fsm structure (global)*/ |
mbed_official | 0:51ac1d130fd4 | 99 | lcp_options lcp_wantoptions[NUM_PPP]; /* Options that we want to request */ |
mbed_official | 0:51ac1d130fd4 | 100 | lcp_options lcp_gotoptions[NUM_PPP]; /* Options that peer ack'd */ |
mbed_official | 0:51ac1d130fd4 | 101 | lcp_options lcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */ |
mbed_official | 0:51ac1d130fd4 | 102 | lcp_options lcp_hisoptions[NUM_PPP]; /* Options that we ack'd */ |
mbed_official | 0:51ac1d130fd4 | 103 | ext_accm xmit_accm[NUM_PPP]; /* extended transmit ACCM */ |
mbed_official | 0:51ac1d130fd4 | 104 | |
mbed_official | 0:51ac1d130fd4 | 105 | static u32_t lcp_echos_pending = 0; /* Number of outstanding echo msgs */ |
mbed_official | 0:51ac1d130fd4 | 106 | static u32_t lcp_echo_number = 0; /* ID number of next echo frame */ |
mbed_official | 0:51ac1d130fd4 | 107 | static u32_t lcp_echo_timer_running = 0; /* TRUE if a timer is running */ |
mbed_official | 0:51ac1d130fd4 | 108 | |
mbed_official | 0:51ac1d130fd4 | 109 | /* @todo: do we really need such a large buffer? The typical 1500 bytes seem too much. */ |
donatien | 4:f71f5d9d5846 | 110 | static u_char nak_buffer[PPP_MRU] __attribute((section("AHBSRAM1"))); /* where we construct a nak packet */ |
mbed_official | 0:51ac1d130fd4 | 111 | |
mbed_official | 0:51ac1d130fd4 | 112 | /* |
mbed_official | 0:51ac1d130fd4 | 113 | * Callbacks for fsm code. (CI = Configuration Information) |
mbed_official | 0:51ac1d130fd4 | 114 | */ |
mbed_official | 0:51ac1d130fd4 | 115 | static void lcp_resetci (fsm*); /* Reset our CI */ |
mbed_official | 0:51ac1d130fd4 | 116 | static int lcp_cilen (fsm*); /* Return length of our CI */ |
mbed_official | 0:51ac1d130fd4 | 117 | static void lcp_addci (fsm*, u_char*, int*); /* Add our CI to pkt */ |
mbed_official | 0:51ac1d130fd4 | 118 | static int lcp_ackci (fsm*, u_char*, int); /* Peer ack'd our CI */ |
mbed_official | 0:51ac1d130fd4 | 119 | static int lcp_nakci (fsm*, u_char*, int); /* Peer nak'd our CI */ |
mbed_official | 0:51ac1d130fd4 | 120 | static int lcp_rejci (fsm*, u_char*, int); /* Peer rej'd our CI */ |
mbed_official | 0:51ac1d130fd4 | 121 | static int lcp_reqci (fsm*, u_char*, int*, int); /* Rcv peer CI */ |
mbed_official | 0:51ac1d130fd4 | 122 | static void lcp_up (fsm*); /* We're UP */ |
mbed_official | 0:51ac1d130fd4 | 123 | static void lcp_down (fsm*); /* We're DOWN */ |
mbed_official | 0:51ac1d130fd4 | 124 | static void lcp_starting (fsm*); /* We need lower layer up */ |
mbed_official | 0:51ac1d130fd4 | 125 | static void lcp_finished (fsm*); /* We need lower layer down */ |
mbed_official | 0:51ac1d130fd4 | 126 | static int lcp_extcode (fsm*, int, u_char, u_char*, int); |
mbed_official | 0:51ac1d130fd4 | 127 | static void lcp_rprotrej (fsm*, u_char*, int); |
mbed_official | 0:51ac1d130fd4 | 128 | |
mbed_official | 0:51ac1d130fd4 | 129 | /* |
mbed_official | 0:51ac1d130fd4 | 130 | * routines to send LCP echos to peer |
mbed_official | 0:51ac1d130fd4 | 131 | */ |
mbed_official | 0:51ac1d130fd4 | 132 | |
mbed_official | 0:51ac1d130fd4 | 133 | static void lcp_echo_lowerup (int); |
mbed_official | 0:51ac1d130fd4 | 134 | static void lcp_echo_lowerdown (int); |
mbed_official | 0:51ac1d130fd4 | 135 | static void LcpEchoTimeout (void*); |
mbed_official | 0:51ac1d130fd4 | 136 | static void lcp_received_echo_reply (fsm*, int, u_char*, int); |
mbed_official | 0:51ac1d130fd4 | 137 | static void LcpSendEchoRequest (fsm*); |
mbed_official | 0:51ac1d130fd4 | 138 | static void LcpLinkFailure (fsm*); |
mbed_official | 0:51ac1d130fd4 | 139 | static void LcpEchoCheck (fsm*); |
mbed_official | 0:51ac1d130fd4 | 140 | |
mbed_official | 0:51ac1d130fd4 | 141 | static fsm_callbacks lcp_callbacks = { /* LCP callback routines */ |
mbed_official | 0:51ac1d130fd4 | 142 | lcp_resetci, /* Reset our Configuration Information */ |
mbed_official | 0:51ac1d130fd4 | 143 | lcp_cilen, /* Length of our Configuration Information */ |
mbed_official | 0:51ac1d130fd4 | 144 | lcp_addci, /* Add our Configuration Information */ |
mbed_official | 0:51ac1d130fd4 | 145 | lcp_ackci, /* ACK our Configuration Information */ |
mbed_official | 0:51ac1d130fd4 | 146 | lcp_nakci, /* NAK our Configuration Information */ |
mbed_official | 0:51ac1d130fd4 | 147 | lcp_rejci, /* Reject our Configuration Information */ |
mbed_official | 0:51ac1d130fd4 | 148 | lcp_reqci, /* Request peer's Configuration Information */ |
mbed_official | 0:51ac1d130fd4 | 149 | lcp_up, /* Called when fsm reaches LS_OPENED state */ |
mbed_official | 0:51ac1d130fd4 | 150 | lcp_down, /* Called when fsm leaves LS_OPENED state */ |
mbed_official | 0:51ac1d130fd4 | 151 | lcp_starting, /* Called when we want the lower layer up */ |
mbed_official | 0:51ac1d130fd4 | 152 | lcp_finished, /* Called when we want the lower layer down */ |
mbed_official | 0:51ac1d130fd4 | 153 | NULL, /* Called when Protocol-Reject received */ |
mbed_official | 0:51ac1d130fd4 | 154 | NULL, /* Retransmission is necessary */ |
mbed_official | 0:51ac1d130fd4 | 155 | lcp_extcode, /* Called to handle LCP-specific codes */ |
mbed_official | 0:51ac1d130fd4 | 156 | "LCP" /* String name of protocol */ |
mbed_official | 0:51ac1d130fd4 | 157 | }; |
mbed_official | 0:51ac1d130fd4 | 158 | |
mbed_official | 0:51ac1d130fd4 | 159 | /* |
mbed_official | 0:51ac1d130fd4 | 160 | * Protocol entry points. |
mbed_official | 0:51ac1d130fd4 | 161 | * Some of these are called directly. |
mbed_official | 0:51ac1d130fd4 | 162 | */ |
mbed_official | 0:51ac1d130fd4 | 163 | |
mbed_official | 0:51ac1d130fd4 | 164 | static void lcp_input (int, u_char *, int); |
mbed_official | 0:51ac1d130fd4 | 165 | static void lcp_protrej (int); |
mbed_official | 0:51ac1d130fd4 | 166 | |
mbed_official | 0:51ac1d130fd4 | 167 | struct protent lcp_protent = { |
mbed_official | 0:51ac1d130fd4 | 168 | PPP_LCP, |
mbed_official | 0:51ac1d130fd4 | 169 | lcp_init, |
mbed_official | 0:51ac1d130fd4 | 170 | lcp_input, |
mbed_official | 0:51ac1d130fd4 | 171 | lcp_protrej, |
mbed_official | 0:51ac1d130fd4 | 172 | lcp_lowerup, |
mbed_official | 0:51ac1d130fd4 | 173 | lcp_lowerdown, |
mbed_official | 0:51ac1d130fd4 | 174 | lcp_open, |
mbed_official | 0:51ac1d130fd4 | 175 | lcp_close, |
mbed_official | 0:51ac1d130fd4 | 176 | #if PPP_ADDITIONAL_CALLBACKS |
mbed_official | 0:51ac1d130fd4 | 177 | lcp_printpkt, |
mbed_official | 0:51ac1d130fd4 | 178 | NULL, |
mbed_official | 0:51ac1d130fd4 | 179 | #endif /* PPP_ADDITIONAL_CALLBACKS */ |
mbed_official | 0:51ac1d130fd4 | 180 | 1, |
mbed_official | 0:51ac1d130fd4 | 181 | "LCP", |
mbed_official | 0:51ac1d130fd4 | 182 | #if PPP_ADDITIONAL_CALLBACKS |
mbed_official | 0:51ac1d130fd4 | 183 | NULL, |
mbed_official | 0:51ac1d130fd4 | 184 | NULL, |
mbed_official | 0:51ac1d130fd4 | 185 | NULL |
mbed_official | 0:51ac1d130fd4 | 186 | #endif /* PPP_ADDITIONAL_CALLBACKS */ |
mbed_official | 0:51ac1d130fd4 | 187 | }; |
mbed_official | 0:51ac1d130fd4 | 188 | |
mbed_official | 0:51ac1d130fd4 | 189 | int lcp_loopbackfail = DEFLOOPBACKFAIL; |
mbed_official | 0:51ac1d130fd4 | 190 | |
mbed_official | 0:51ac1d130fd4 | 191 | /* |
mbed_official | 0:51ac1d130fd4 | 192 | * Length of each type of configuration option (in octets) |
mbed_official | 0:51ac1d130fd4 | 193 | */ |
mbed_official | 0:51ac1d130fd4 | 194 | #define CILEN_VOID 2 |
mbed_official | 0:51ac1d130fd4 | 195 | #define CILEN_CHAR 3 |
mbed_official | 0:51ac1d130fd4 | 196 | #define CILEN_SHORT 4 /* CILEN_VOID + sizeof(short) */ |
mbed_official | 0:51ac1d130fd4 | 197 | #define CILEN_CHAP 5 /* CILEN_VOID + sizeof(short) + 1 */ |
mbed_official | 0:51ac1d130fd4 | 198 | #define CILEN_LONG 6 /* CILEN_VOID + sizeof(long) */ |
mbed_official | 0:51ac1d130fd4 | 199 | #define CILEN_LQR 8 /* CILEN_VOID + sizeof(short) + sizeof(long) */ |
mbed_official | 0:51ac1d130fd4 | 200 | #define CILEN_CBCP 3 |
mbed_official | 0:51ac1d130fd4 | 201 | |
mbed_official | 0:51ac1d130fd4 | 202 | #define CODENAME(x) ((x) == CONFACK ? "ACK" : (x) == CONFNAK ? "NAK" : "REJ") |
mbed_official | 0:51ac1d130fd4 | 203 | |
mbed_official | 0:51ac1d130fd4 | 204 | #if 0 /* UNUSED */ |
mbed_official | 0:51ac1d130fd4 | 205 | /* |
mbed_official | 0:51ac1d130fd4 | 206 | * setescape - add chars to the set we escape on transmission. |
mbed_official | 0:51ac1d130fd4 | 207 | */ |
mbed_official | 0:51ac1d130fd4 | 208 | static int |
mbed_official | 0:51ac1d130fd4 | 209 | setescape(argv) |
mbed_official | 0:51ac1d130fd4 | 210 | char **argv; |
mbed_official | 0:51ac1d130fd4 | 211 | { |
mbed_official | 0:51ac1d130fd4 | 212 | int n, ret; |
mbed_official | 0:51ac1d130fd4 | 213 | char *p, *endp; |
mbed_official | 0:51ac1d130fd4 | 214 | |
mbed_official | 0:51ac1d130fd4 | 215 | p = *argv; |
mbed_official | 0:51ac1d130fd4 | 216 | ret = 1; |
mbed_official | 0:51ac1d130fd4 | 217 | while (*p) { |
mbed_official | 0:51ac1d130fd4 | 218 | n = strtol(p, &endp, 16); |
mbed_official | 0:51ac1d130fd4 | 219 | if (p == endp) { |
mbed_official | 0:51ac1d130fd4 | 220 | option_error("escape parameter contains invalid hex number '%s'", p); |
mbed_official | 0:51ac1d130fd4 | 221 | return 0; |
mbed_official | 0:51ac1d130fd4 | 222 | } |
mbed_official | 0:51ac1d130fd4 | 223 | p = endp; |
mbed_official | 0:51ac1d130fd4 | 224 | if (n < 0 || n == 0x5E || n > 0xFF) { |
mbed_official | 0:51ac1d130fd4 | 225 | option_error("can't escape character 0x%x", n); |
mbed_official | 0:51ac1d130fd4 | 226 | ret = 0; |
mbed_official | 0:51ac1d130fd4 | 227 | } else |
mbed_official | 0:51ac1d130fd4 | 228 | xmit_accm[0][n >> 5] |= 1 << (n & 0x1F); |
mbed_official | 0:51ac1d130fd4 | 229 | while (*p == ',' || *p == ' ') |
mbed_official | 0:51ac1d130fd4 | 230 | ++p; |
mbed_official | 0:51ac1d130fd4 | 231 | } |
mbed_official | 0:51ac1d130fd4 | 232 | return ret; |
mbed_official | 0:51ac1d130fd4 | 233 | } |
mbed_official | 0:51ac1d130fd4 | 234 | #endif /* UNUSED */ |
mbed_official | 0:51ac1d130fd4 | 235 | |
mbed_official | 0:51ac1d130fd4 | 236 | /* |
mbed_official | 0:51ac1d130fd4 | 237 | * lcp_init - Initialize LCP. |
mbed_official | 0:51ac1d130fd4 | 238 | */ |
mbed_official | 0:51ac1d130fd4 | 239 | void |
mbed_official | 0:51ac1d130fd4 | 240 | lcp_init(int unit) |
mbed_official | 0:51ac1d130fd4 | 241 | { |
mbed_official | 0:51ac1d130fd4 | 242 | fsm *f = &lcp_fsm[unit]; |
mbed_official | 0:51ac1d130fd4 | 243 | lcp_options *wo = &lcp_wantoptions[unit]; |
mbed_official | 0:51ac1d130fd4 | 244 | lcp_options *ao = &lcp_allowoptions[unit]; |
mbed_official | 0:51ac1d130fd4 | 245 | |
mbed_official | 0:51ac1d130fd4 | 246 | f->unit = unit; |
mbed_official | 0:51ac1d130fd4 | 247 | f->protocol = PPP_LCP; |
mbed_official | 0:51ac1d130fd4 | 248 | f->callbacks = &lcp_callbacks; |
mbed_official | 0:51ac1d130fd4 | 249 | |
mbed_official | 0:51ac1d130fd4 | 250 | fsm_init(f); |
mbed_official | 0:51ac1d130fd4 | 251 | |
mbed_official | 0:51ac1d130fd4 | 252 | wo->passive = 0; |
mbed_official | 0:51ac1d130fd4 | 253 | wo->silent = 0; |
mbed_official | 0:51ac1d130fd4 | 254 | wo->restart = 0; /* Set to 1 in kernels or multi-line implementations */ |
mbed_official | 0:51ac1d130fd4 | 255 | wo->neg_mru = 1; |
mbed_official | 0:51ac1d130fd4 | 256 | wo->mru = PPP_DEFMRU; |
mbed_official | 0:51ac1d130fd4 | 257 | wo->neg_asyncmap = 1; |
mbed_official | 0:51ac1d130fd4 | 258 | wo->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */ |
mbed_official | 0:51ac1d130fd4 | 259 | wo->neg_chap = 0; /* Set to 1 on server */ |
mbed_official | 0:51ac1d130fd4 | 260 | wo->neg_upap = 0; /* Set to 1 on server */ |
mbed_official | 0:51ac1d130fd4 | 261 | wo->chap_mdtype = CHAP_DIGEST_MD5; |
mbed_official | 0:51ac1d130fd4 | 262 | wo->neg_magicnumber = 1; |
mbed_official | 0:51ac1d130fd4 | 263 | wo->neg_pcompression = 1; |
mbed_official | 0:51ac1d130fd4 | 264 | wo->neg_accompression = 1; |
mbed_official | 0:51ac1d130fd4 | 265 | wo->neg_lqr = 0; /* no LQR implementation yet */ |
mbed_official | 0:51ac1d130fd4 | 266 | wo->neg_cbcp = 0; |
mbed_official | 0:51ac1d130fd4 | 267 | |
mbed_official | 0:51ac1d130fd4 | 268 | ao->neg_mru = 1; |
mbed_official | 0:51ac1d130fd4 | 269 | ao->mru = PPP_MAXMRU; |
mbed_official | 0:51ac1d130fd4 | 270 | ao->neg_asyncmap = 1; |
mbed_official | 0:51ac1d130fd4 | 271 | ao->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */ |
mbed_official | 0:51ac1d130fd4 | 272 | ao->neg_chap = (CHAP_SUPPORT != 0); |
mbed_official | 0:51ac1d130fd4 | 273 | ao->chap_mdtype = CHAP_DIGEST_MD5; |
mbed_official | 0:51ac1d130fd4 | 274 | ao->neg_upap = (PAP_SUPPORT != 0); |
mbed_official | 0:51ac1d130fd4 | 275 | ao->neg_magicnumber = 1; |
mbed_official | 0:51ac1d130fd4 | 276 | ao->neg_pcompression = 1; |
mbed_official | 0:51ac1d130fd4 | 277 | ao->neg_accompression = 1; |
mbed_official | 0:51ac1d130fd4 | 278 | ao->neg_lqr = 0; /* no LQR implementation yet */ |
mbed_official | 0:51ac1d130fd4 | 279 | ao->neg_cbcp = (CBCP_SUPPORT != 0); |
mbed_official | 0:51ac1d130fd4 | 280 | |
mbed_official | 0:51ac1d130fd4 | 281 | /* |
mbed_official | 0:51ac1d130fd4 | 282 | * Set transmit escape for the flag and escape characters plus anything |
mbed_official | 0:51ac1d130fd4 | 283 | * set for the allowable options. |
mbed_official | 0:51ac1d130fd4 | 284 | */ |
mbed_official | 0:51ac1d130fd4 | 285 | memset(xmit_accm[unit], 0, sizeof(xmit_accm[0])); |
mbed_official | 0:51ac1d130fd4 | 286 | xmit_accm[unit][15] = 0x60; |
mbed_official | 0:51ac1d130fd4 | 287 | xmit_accm[unit][0] = (u_char)((ao->asyncmap & 0xFF)); |
mbed_official | 0:51ac1d130fd4 | 288 | xmit_accm[unit][1] = (u_char)((ao->asyncmap >> 8) & 0xFF); |
mbed_official | 0:51ac1d130fd4 | 289 | xmit_accm[unit][2] = (u_char)((ao->asyncmap >> 16) & 0xFF); |
mbed_official | 0:51ac1d130fd4 | 290 | xmit_accm[unit][3] = (u_char)((ao->asyncmap >> 24) & 0xFF); |
mbed_official | 0:51ac1d130fd4 | 291 | LCPDEBUG(LOG_INFO, ("lcp_init: xmit_accm=%X %X %X %X\n", |
mbed_official | 0:51ac1d130fd4 | 292 | xmit_accm[unit][0], |
mbed_official | 0:51ac1d130fd4 | 293 | xmit_accm[unit][1], |
mbed_official | 0:51ac1d130fd4 | 294 | xmit_accm[unit][2], |
mbed_official | 0:51ac1d130fd4 | 295 | xmit_accm[unit][3])); |
mbed_official | 0:51ac1d130fd4 | 296 | |
mbed_official | 0:51ac1d130fd4 | 297 | lcp_phase[unit] = PHASE_INITIALIZE; |
mbed_official | 0:51ac1d130fd4 | 298 | } |
mbed_official | 0:51ac1d130fd4 | 299 | |
mbed_official | 0:51ac1d130fd4 | 300 | |
mbed_official | 0:51ac1d130fd4 | 301 | /* |
mbed_official | 0:51ac1d130fd4 | 302 | * lcp_open - LCP is allowed to come up. |
mbed_official | 0:51ac1d130fd4 | 303 | */ |
mbed_official | 0:51ac1d130fd4 | 304 | void |
mbed_official | 0:51ac1d130fd4 | 305 | lcp_open(int unit) |
mbed_official | 0:51ac1d130fd4 | 306 | { |
mbed_official | 0:51ac1d130fd4 | 307 | fsm *f = &lcp_fsm[unit]; |
mbed_official | 0:51ac1d130fd4 | 308 | lcp_options *wo = &lcp_wantoptions[unit]; |
mbed_official | 0:51ac1d130fd4 | 309 | |
mbed_official | 0:51ac1d130fd4 | 310 | f->flags = 0; |
mbed_official | 0:51ac1d130fd4 | 311 | if (wo->passive) { |
mbed_official | 0:51ac1d130fd4 | 312 | f->flags |= OPT_PASSIVE; |
mbed_official | 0:51ac1d130fd4 | 313 | } |
mbed_official | 0:51ac1d130fd4 | 314 | if (wo->silent) { |
mbed_official | 0:51ac1d130fd4 | 315 | f->flags |= OPT_SILENT; |
mbed_official | 0:51ac1d130fd4 | 316 | } |
mbed_official | 0:51ac1d130fd4 | 317 | fsm_open(f); |
mbed_official | 0:51ac1d130fd4 | 318 | |
mbed_official | 0:51ac1d130fd4 | 319 | lcp_phase[unit] = PHASE_ESTABLISH; |
mbed_official | 0:51ac1d130fd4 | 320 | } |
mbed_official | 0:51ac1d130fd4 | 321 | |
mbed_official | 0:51ac1d130fd4 | 322 | |
mbed_official | 0:51ac1d130fd4 | 323 | /* |
mbed_official | 0:51ac1d130fd4 | 324 | * lcp_close - Take LCP down. |
mbed_official | 0:51ac1d130fd4 | 325 | */ |
mbed_official | 0:51ac1d130fd4 | 326 | void |
mbed_official | 0:51ac1d130fd4 | 327 | lcp_close(int unit, char *reason) |
mbed_official | 0:51ac1d130fd4 | 328 | { |
mbed_official | 0:51ac1d130fd4 | 329 | fsm *f = &lcp_fsm[unit]; |
mbed_official | 0:51ac1d130fd4 | 330 | |
mbed_official | 0:51ac1d130fd4 | 331 | if (lcp_phase[unit] != PHASE_DEAD) { |
mbed_official | 0:51ac1d130fd4 | 332 | lcp_phase[unit] = PHASE_TERMINATE; |
mbed_official | 0:51ac1d130fd4 | 333 | } |
mbed_official | 0:51ac1d130fd4 | 334 | if (f->state == LS_STOPPED && f->flags & (OPT_PASSIVE|OPT_SILENT)) { |
mbed_official | 0:51ac1d130fd4 | 335 | /* |
mbed_official | 0:51ac1d130fd4 | 336 | * This action is not strictly according to the FSM in RFC1548, |
mbed_official | 0:51ac1d130fd4 | 337 | * but it does mean that the program terminates if you do an |
mbed_official | 0:51ac1d130fd4 | 338 | * lcp_close() in passive/silent mode when a connection hasn't |
mbed_official | 0:51ac1d130fd4 | 339 | * been established. |
mbed_official | 0:51ac1d130fd4 | 340 | */ |
mbed_official | 0:51ac1d130fd4 | 341 | f->state = LS_CLOSED; |
mbed_official | 0:51ac1d130fd4 | 342 | lcp_finished(f); |
mbed_official | 0:51ac1d130fd4 | 343 | } else { |
mbed_official | 0:51ac1d130fd4 | 344 | fsm_close(f, reason); |
mbed_official | 0:51ac1d130fd4 | 345 | } |
mbed_official | 0:51ac1d130fd4 | 346 | } |
mbed_official | 0:51ac1d130fd4 | 347 | |
mbed_official | 0:51ac1d130fd4 | 348 | |
mbed_official | 0:51ac1d130fd4 | 349 | /* |
mbed_official | 0:51ac1d130fd4 | 350 | * lcp_lowerup - The lower layer is up. |
mbed_official | 0:51ac1d130fd4 | 351 | */ |
mbed_official | 0:51ac1d130fd4 | 352 | void |
mbed_official | 0:51ac1d130fd4 | 353 | lcp_lowerup(int unit) |
mbed_official | 0:51ac1d130fd4 | 354 | { |
mbed_official | 0:51ac1d130fd4 | 355 | lcp_options *wo = &lcp_wantoptions[unit]; |
mbed_official | 0:51ac1d130fd4 | 356 | |
mbed_official | 0:51ac1d130fd4 | 357 | /* |
mbed_official | 0:51ac1d130fd4 | 358 | * Don't use A/C or protocol compression on transmission, |
mbed_official | 0:51ac1d130fd4 | 359 | * but accept A/C and protocol compressed packets |
mbed_official | 0:51ac1d130fd4 | 360 | * if we are going to ask for A/C and protocol compression. |
mbed_official | 0:51ac1d130fd4 | 361 | */ |
mbed_official | 0:51ac1d130fd4 | 362 | ppp_set_xaccm(unit, &xmit_accm[unit]); |
mbed_official | 0:51ac1d130fd4 | 363 | ppp_send_config(unit, PPP_MRU, 0xffffffffl, 0, 0); |
mbed_official | 0:51ac1d130fd4 | 364 | ppp_recv_config(unit, PPP_MRU, 0x00000000l, |
mbed_official | 0:51ac1d130fd4 | 365 | wo->neg_pcompression, wo->neg_accompression); |
mbed_official | 0:51ac1d130fd4 | 366 | peer_mru[unit] = PPP_MRU; |
mbed_official | 0:51ac1d130fd4 | 367 | lcp_allowoptions[unit].asyncmap = (u_long)xmit_accm[unit][0] |
mbed_official | 0:51ac1d130fd4 | 368 | | ((u_long)xmit_accm[unit][1] << 8) |
mbed_official | 0:51ac1d130fd4 | 369 | | ((u_long)xmit_accm[unit][2] << 16) |
mbed_official | 0:51ac1d130fd4 | 370 | | ((u_long)xmit_accm[unit][3] << 24); |
mbed_official | 0:51ac1d130fd4 | 371 | LCPDEBUG(LOG_INFO, ("lcp_lowerup: asyncmap=%X %X %X %X\n", |
mbed_official | 0:51ac1d130fd4 | 372 | xmit_accm[unit][3], |
mbed_official | 0:51ac1d130fd4 | 373 | xmit_accm[unit][2], |
mbed_official | 0:51ac1d130fd4 | 374 | xmit_accm[unit][1], |
mbed_official | 0:51ac1d130fd4 | 375 | xmit_accm[unit][0])); |
mbed_official | 0:51ac1d130fd4 | 376 | |
mbed_official | 0:51ac1d130fd4 | 377 | fsm_lowerup(&lcp_fsm[unit]); |
mbed_official | 0:51ac1d130fd4 | 378 | } |
mbed_official | 0:51ac1d130fd4 | 379 | |
mbed_official | 0:51ac1d130fd4 | 380 | |
mbed_official | 0:51ac1d130fd4 | 381 | /* |
mbed_official | 0:51ac1d130fd4 | 382 | * lcp_lowerdown - The lower layer is down. |
mbed_official | 0:51ac1d130fd4 | 383 | */ |
mbed_official | 0:51ac1d130fd4 | 384 | void |
mbed_official | 0:51ac1d130fd4 | 385 | lcp_lowerdown(int unit) |
mbed_official | 0:51ac1d130fd4 | 386 | { |
mbed_official | 0:51ac1d130fd4 | 387 | fsm_lowerdown(&lcp_fsm[unit]); |
mbed_official | 0:51ac1d130fd4 | 388 | } |
mbed_official | 0:51ac1d130fd4 | 389 | |
mbed_official | 0:51ac1d130fd4 | 390 | |
mbed_official | 0:51ac1d130fd4 | 391 | /* |
mbed_official | 0:51ac1d130fd4 | 392 | * lcp_input - Input LCP packet. |
mbed_official | 0:51ac1d130fd4 | 393 | */ |
mbed_official | 0:51ac1d130fd4 | 394 | static void |
mbed_official | 0:51ac1d130fd4 | 395 | lcp_input(int unit, u_char *p, int len) |
mbed_official | 0:51ac1d130fd4 | 396 | { |
mbed_official | 0:51ac1d130fd4 | 397 | fsm *f = &lcp_fsm[unit]; |
mbed_official | 0:51ac1d130fd4 | 398 | |
mbed_official | 0:51ac1d130fd4 | 399 | fsm_input(f, p, len); |
mbed_official | 0:51ac1d130fd4 | 400 | } |
mbed_official | 0:51ac1d130fd4 | 401 | |
mbed_official | 0:51ac1d130fd4 | 402 | |
mbed_official | 0:51ac1d130fd4 | 403 | /* |
mbed_official | 0:51ac1d130fd4 | 404 | * lcp_extcode - Handle a LCP-specific code. |
mbed_official | 0:51ac1d130fd4 | 405 | */ |
mbed_official | 0:51ac1d130fd4 | 406 | static int |
mbed_official | 0:51ac1d130fd4 | 407 | lcp_extcode(fsm *f, int code, u_char id, u_char *inp, int len) |
mbed_official | 0:51ac1d130fd4 | 408 | { |
mbed_official | 0:51ac1d130fd4 | 409 | u_char *magp; |
mbed_official | 0:51ac1d130fd4 | 410 | |
mbed_official | 0:51ac1d130fd4 | 411 | switch( code ){ |
mbed_official | 0:51ac1d130fd4 | 412 | case PROTREJ: |
mbed_official | 0:51ac1d130fd4 | 413 | lcp_rprotrej(f, inp, len); |
mbed_official | 0:51ac1d130fd4 | 414 | break; |
mbed_official | 0:51ac1d130fd4 | 415 | |
mbed_official | 0:51ac1d130fd4 | 416 | case ECHOREQ: |
mbed_official | 0:51ac1d130fd4 | 417 | if (f->state != LS_OPENED) { |
mbed_official | 0:51ac1d130fd4 | 418 | break; |
mbed_official | 0:51ac1d130fd4 | 419 | } |
mbed_official | 0:51ac1d130fd4 | 420 | LCPDEBUG(LOG_INFO, ("lcp: Echo-Request, Rcvd id %d\n", id)); |
mbed_official | 0:51ac1d130fd4 | 421 | magp = inp; |
mbed_official | 0:51ac1d130fd4 | 422 | PUTLONG(lcp_gotoptions[f->unit].magicnumber, magp); |
mbed_official | 0:51ac1d130fd4 | 423 | fsm_sdata(f, ECHOREP, id, inp, len); |
mbed_official | 0:51ac1d130fd4 | 424 | break; |
mbed_official | 0:51ac1d130fd4 | 425 | |
mbed_official | 0:51ac1d130fd4 | 426 | case ECHOREP: |
mbed_official | 0:51ac1d130fd4 | 427 | lcp_received_echo_reply(f, id, inp, len); |
mbed_official | 0:51ac1d130fd4 | 428 | break; |
mbed_official | 0:51ac1d130fd4 | 429 | |
mbed_official | 0:51ac1d130fd4 | 430 | case DISCREQ: |
mbed_official | 0:51ac1d130fd4 | 431 | break; |
mbed_official | 0:51ac1d130fd4 | 432 | |
mbed_official | 0:51ac1d130fd4 | 433 | default: |
mbed_official | 0:51ac1d130fd4 | 434 | return 0; |
mbed_official | 0:51ac1d130fd4 | 435 | } |
mbed_official | 0:51ac1d130fd4 | 436 | return 1; |
mbed_official | 0:51ac1d130fd4 | 437 | } |
mbed_official | 0:51ac1d130fd4 | 438 | |
mbed_official | 0:51ac1d130fd4 | 439 | |
mbed_official | 0:51ac1d130fd4 | 440 | /* |
mbed_official | 0:51ac1d130fd4 | 441 | * lcp_rprotrej - Receive an Protocol-Reject. |
mbed_official | 0:51ac1d130fd4 | 442 | * |
mbed_official | 0:51ac1d130fd4 | 443 | * Figure out which protocol is rejected and inform it. |
mbed_official | 0:51ac1d130fd4 | 444 | */ |
mbed_official | 0:51ac1d130fd4 | 445 | static void |
mbed_official | 0:51ac1d130fd4 | 446 | lcp_rprotrej(fsm *f, u_char *inp, int len) |
mbed_official | 0:51ac1d130fd4 | 447 | { |
mbed_official | 0:51ac1d130fd4 | 448 | int i; |
mbed_official | 0:51ac1d130fd4 | 449 | struct protent *protp; |
mbed_official | 0:51ac1d130fd4 | 450 | u_short prot; |
mbed_official | 0:51ac1d130fd4 | 451 | |
mbed_official | 0:51ac1d130fd4 | 452 | if (len < (int)sizeof (u_short)) { |
mbed_official | 0:51ac1d130fd4 | 453 | LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd short Protocol-Reject packet!\n")); |
mbed_official | 0:51ac1d130fd4 | 454 | return; |
mbed_official | 0:51ac1d130fd4 | 455 | } |
mbed_official | 0:51ac1d130fd4 | 456 | |
mbed_official | 0:51ac1d130fd4 | 457 | GETSHORT(prot, inp); |
mbed_official | 0:51ac1d130fd4 | 458 | |
mbed_official | 0:51ac1d130fd4 | 459 | LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd Protocol-Reject packet for %x!\n", prot)); |
mbed_official | 0:51ac1d130fd4 | 460 | |
mbed_official | 0:51ac1d130fd4 | 461 | /* |
mbed_official | 0:51ac1d130fd4 | 462 | * Protocol-Reject packets received in any state other than the LCP |
mbed_official | 0:51ac1d130fd4 | 463 | * LS_OPENED state SHOULD be silently discarded. |
mbed_official | 0:51ac1d130fd4 | 464 | */ |
mbed_official | 0:51ac1d130fd4 | 465 | if( f->state != LS_OPENED ) { |
mbed_official | 0:51ac1d130fd4 | 466 | LCPDEBUG(LOG_INFO, ("Protocol-Reject discarded: LCP in state %d\n", f->state)); |
mbed_official | 0:51ac1d130fd4 | 467 | return; |
mbed_official | 0:51ac1d130fd4 | 468 | } |
mbed_official | 0:51ac1d130fd4 | 469 | |
mbed_official | 0:51ac1d130fd4 | 470 | /* |
mbed_official | 0:51ac1d130fd4 | 471 | * Upcall the proper Protocol-Reject routine. |
mbed_official | 0:51ac1d130fd4 | 472 | */ |
mbed_official | 0:51ac1d130fd4 | 473 | for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) { |
mbed_official | 0:51ac1d130fd4 | 474 | if (protp->protocol == prot && protp->enabled_flag) { |
mbed_official | 0:51ac1d130fd4 | 475 | (*protp->protrej)(f->unit); |
mbed_official | 0:51ac1d130fd4 | 476 | return; |
mbed_official | 0:51ac1d130fd4 | 477 | } |
mbed_official | 0:51ac1d130fd4 | 478 | } |
mbed_official | 0:51ac1d130fd4 | 479 | |
mbed_official | 0:51ac1d130fd4 | 480 | LCPDEBUG(LOG_WARNING, ("Protocol-Reject for unsupported protocol 0x%x\n", prot)); |
mbed_official | 0:51ac1d130fd4 | 481 | } |
mbed_official | 0:51ac1d130fd4 | 482 | |
mbed_official | 0:51ac1d130fd4 | 483 | |
mbed_official | 0:51ac1d130fd4 | 484 | /* |
mbed_official | 0:51ac1d130fd4 | 485 | * lcp_protrej - A Protocol-Reject was received. |
mbed_official | 0:51ac1d130fd4 | 486 | */ |
mbed_official | 0:51ac1d130fd4 | 487 | static void |
mbed_official | 0:51ac1d130fd4 | 488 | lcp_protrej(int unit) |
mbed_official | 0:51ac1d130fd4 | 489 | { |
mbed_official | 0:51ac1d130fd4 | 490 | LWIP_UNUSED_ARG(unit); |
mbed_official | 0:51ac1d130fd4 | 491 | /* |
mbed_official | 0:51ac1d130fd4 | 492 | * Can't reject LCP! |
mbed_official | 0:51ac1d130fd4 | 493 | */ |
mbed_official | 0:51ac1d130fd4 | 494 | LCPDEBUG(LOG_WARNING, ("lcp_protrej: Received Protocol-Reject for LCP!\n")); |
mbed_official | 0:51ac1d130fd4 | 495 | fsm_protreject(&lcp_fsm[unit]); |
mbed_official | 0:51ac1d130fd4 | 496 | } |
mbed_official | 0:51ac1d130fd4 | 497 | |
mbed_official | 0:51ac1d130fd4 | 498 | |
mbed_official | 0:51ac1d130fd4 | 499 | /* |
mbed_official | 0:51ac1d130fd4 | 500 | * lcp_sprotrej - Send a Protocol-Reject for some protocol. |
mbed_official | 0:51ac1d130fd4 | 501 | */ |
mbed_official | 0:51ac1d130fd4 | 502 | void |
mbed_official | 0:51ac1d130fd4 | 503 | lcp_sprotrej(int unit, u_char *p, int len) |
mbed_official | 0:51ac1d130fd4 | 504 | { |
mbed_official | 0:51ac1d130fd4 | 505 | /* |
mbed_official | 0:51ac1d130fd4 | 506 | * Send back the protocol and the information field of the |
mbed_official | 0:51ac1d130fd4 | 507 | * rejected packet. We only get here if LCP is in the LS_OPENED state. |
mbed_official | 0:51ac1d130fd4 | 508 | */ |
mbed_official | 0:51ac1d130fd4 | 509 | |
mbed_official | 0:51ac1d130fd4 | 510 | fsm_sdata(&lcp_fsm[unit], PROTREJ, ++lcp_fsm[unit].id, p, len); |
mbed_official | 0:51ac1d130fd4 | 511 | } |
mbed_official | 0:51ac1d130fd4 | 512 | |
mbed_official | 0:51ac1d130fd4 | 513 | |
mbed_official | 0:51ac1d130fd4 | 514 | /* |
mbed_official | 0:51ac1d130fd4 | 515 | * lcp_resetci - Reset our CI. |
mbed_official | 0:51ac1d130fd4 | 516 | */ |
mbed_official | 0:51ac1d130fd4 | 517 | static void |
mbed_official | 0:51ac1d130fd4 | 518 | lcp_resetci(fsm *f) |
mbed_official | 0:51ac1d130fd4 | 519 | { |
mbed_official | 0:51ac1d130fd4 | 520 | lcp_wantoptions[f->unit].magicnumber = magic(); |
mbed_official | 0:51ac1d130fd4 | 521 | lcp_wantoptions[f->unit].numloops = 0; |
mbed_official | 0:51ac1d130fd4 | 522 | lcp_gotoptions[f->unit] = lcp_wantoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 523 | peer_mru[f->unit] = PPP_MRU; |
mbed_official | 0:51ac1d130fd4 | 524 | auth_reset(f->unit); |
mbed_official | 0:51ac1d130fd4 | 525 | } |
mbed_official | 0:51ac1d130fd4 | 526 | |
mbed_official | 0:51ac1d130fd4 | 527 | |
mbed_official | 0:51ac1d130fd4 | 528 | /* |
mbed_official | 0:51ac1d130fd4 | 529 | * lcp_cilen - Return length of our CI. |
mbed_official | 0:51ac1d130fd4 | 530 | */ |
mbed_official | 0:51ac1d130fd4 | 531 | static int |
mbed_official | 0:51ac1d130fd4 | 532 | lcp_cilen(fsm *f) |
mbed_official | 0:51ac1d130fd4 | 533 | { |
mbed_official | 0:51ac1d130fd4 | 534 | lcp_options *go = &lcp_gotoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 535 | |
mbed_official | 0:51ac1d130fd4 | 536 | #define LENCIVOID(neg) ((neg) ? CILEN_VOID : 0) |
mbed_official | 0:51ac1d130fd4 | 537 | #define LENCICHAP(neg) ((neg) ? CILEN_CHAP : 0) |
mbed_official | 0:51ac1d130fd4 | 538 | #define LENCISHORT(neg) ((neg) ? CILEN_SHORT : 0) |
mbed_official | 0:51ac1d130fd4 | 539 | #define LENCILONG(neg) ((neg) ? CILEN_LONG : 0) |
mbed_official | 0:51ac1d130fd4 | 540 | #define LENCILQR(neg) ((neg) ? CILEN_LQR: 0) |
mbed_official | 0:51ac1d130fd4 | 541 | #define LENCICBCP(neg) ((neg) ? CILEN_CBCP: 0) |
mbed_official | 0:51ac1d130fd4 | 542 | /* |
mbed_official | 0:51ac1d130fd4 | 543 | * NB: we only ask for one of CHAP and UPAP, even if we will |
mbed_official | 0:51ac1d130fd4 | 544 | * accept either. |
mbed_official | 0:51ac1d130fd4 | 545 | */ |
mbed_official | 0:51ac1d130fd4 | 546 | return (LENCISHORT(go->neg_mru && go->mru != PPP_DEFMRU) + |
mbed_official | 0:51ac1d130fd4 | 547 | LENCILONG(go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) + |
mbed_official | 0:51ac1d130fd4 | 548 | LENCICHAP(go->neg_chap) + |
mbed_official | 0:51ac1d130fd4 | 549 | LENCISHORT(!go->neg_chap && go->neg_upap) + |
mbed_official | 0:51ac1d130fd4 | 550 | LENCILQR(go->neg_lqr) + |
mbed_official | 0:51ac1d130fd4 | 551 | LENCICBCP(go->neg_cbcp) + |
mbed_official | 0:51ac1d130fd4 | 552 | LENCILONG(go->neg_magicnumber) + |
mbed_official | 0:51ac1d130fd4 | 553 | LENCIVOID(go->neg_pcompression) + |
mbed_official | 0:51ac1d130fd4 | 554 | LENCIVOID(go->neg_accompression)); |
mbed_official | 0:51ac1d130fd4 | 555 | } |
mbed_official | 0:51ac1d130fd4 | 556 | |
mbed_official | 0:51ac1d130fd4 | 557 | |
mbed_official | 0:51ac1d130fd4 | 558 | /* |
mbed_official | 0:51ac1d130fd4 | 559 | * lcp_addci - Add our desired CIs to a packet. |
mbed_official | 0:51ac1d130fd4 | 560 | */ |
mbed_official | 0:51ac1d130fd4 | 561 | static void |
mbed_official | 0:51ac1d130fd4 | 562 | lcp_addci(fsm *f, u_char *ucp, int *lenp) |
mbed_official | 0:51ac1d130fd4 | 563 | { |
mbed_official | 0:51ac1d130fd4 | 564 | lcp_options *go = &lcp_gotoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 565 | u_char *start_ucp = ucp; |
mbed_official | 0:51ac1d130fd4 | 566 | |
mbed_official | 0:51ac1d130fd4 | 567 | #define ADDCIVOID(opt, neg) \ |
mbed_official | 0:51ac1d130fd4 | 568 | if (neg) { \ |
mbed_official | 0:51ac1d130fd4 | 569 | LCPDEBUG(LOG_INFO, ("lcp_addci: opt=%d\n", opt)); \ |
mbed_official | 0:51ac1d130fd4 | 570 | PUTCHAR(opt, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 571 | PUTCHAR(CILEN_VOID, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 572 | } |
mbed_official | 0:51ac1d130fd4 | 573 | #define ADDCISHORT(opt, neg, val) \ |
mbed_official | 0:51ac1d130fd4 | 574 | if (neg) { \ |
mbed_official | 0:51ac1d130fd4 | 575 | LCPDEBUG(LOG_INFO, ("lcp_addci: INT opt=%d %X\n", opt, val)); \ |
mbed_official | 0:51ac1d130fd4 | 576 | PUTCHAR(opt, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 577 | PUTCHAR(CILEN_SHORT, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 578 | PUTSHORT(val, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 579 | } |
mbed_official | 0:51ac1d130fd4 | 580 | #define ADDCICHAP(opt, neg, val, digest) \ |
mbed_official | 0:51ac1d130fd4 | 581 | if (neg) { \ |
mbed_official | 0:51ac1d130fd4 | 582 | LCPDEBUG(LOG_INFO, ("lcp_addci: CHAP opt=%d %X\n", opt, val)); \ |
mbed_official | 0:51ac1d130fd4 | 583 | PUTCHAR(opt, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 584 | PUTCHAR(CILEN_CHAP, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 585 | PUTSHORT(val, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 586 | PUTCHAR(digest, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 587 | } |
mbed_official | 0:51ac1d130fd4 | 588 | #define ADDCILONG(opt, neg, val) \ |
mbed_official | 0:51ac1d130fd4 | 589 | if (neg) { \ |
mbed_official | 0:51ac1d130fd4 | 590 | LCPDEBUG(LOG_INFO, ("lcp_addci: L opt=%d %lX\n", opt, val)); \ |
mbed_official | 0:51ac1d130fd4 | 591 | PUTCHAR(opt, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 592 | PUTCHAR(CILEN_LONG, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 593 | PUTLONG(val, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 594 | } |
mbed_official | 0:51ac1d130fd4 | 595 | #define ADDCILQR(opt, neg, val) \ |
mbed_official | 0:51ac1d130fd4 | 596 | if (neg) { \ |
mbed_official | 0:51ac1d130fd4 | 597 | LCPDEBUG(LOG_INFO, ("lcp_addci: LQR opt=%d %lX\n", opt, val)); \ |
mbed_official | 0:51ac1d130fd4 | 598 | PUTCHAR(opt, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 599 | PUTCHAR(CILEN_LQR, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 600 | PUTSHORT(PPP_LQR, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 601 | PUTLONG(val, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 602 | } |
mbed_official | 0:51ac1d130fd4 | 603 | #define ADDCICHAR(opt, neg, val) \ |
mbed_official | 0:51ac1d130fd4 | 604 | if (neg) { \ |
mbed_official | 0:51ac1d130fd4 | 605 | LCPDEBUG(LOG_INFO, ("lcp_addci: CHAR opt=%d %X '%z'\n", opt, val, val)); \ |
mbed_official | 0:51ac1d130fd4 | 606 | PUTCHAR(opt, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 607 | PUTCHAR(CILEN_CHAR, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 608 | PUTCHAR(val, ucp); \ |
mbed_official | 0:51ac1d130fd4 | 609 | } |
mbed_official | 0:51ac1d130fd4 | 610 | |
mbed_official | 0:51ac1d130fd4 | 611 | ADDCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru); |
mbed_official | 0:51ac1d130fd4 | 612 | ADDCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap); |
mbed_official | 0:51ac1d130fd4 | 613 | ADDCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype); |
mbed_official | 0:51ac1d130fd4 | 614 | ADDCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP); |
mbed_official | 0:51ac1d130fd4 | 615 | ADDCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period); |
mbed_official | 0:51ac1d130fd4 | 616 | ADDCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT); |
mbed_official | 0:51ac1d130fd4 | 617 | ADDCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber); |
mbed_official | 0:51ac1d130fd4 | 618 | ADDCIVOID(CI_PCOMPRESSION, go->neg_pcompression); |
mbed_official | 0:51ac1d130fd4 | 619 | ADDCIVOID(CI_ACCOMPRESSION, go->neg_accompression); |
mbed_official | 0:51ac1d130fd4 | 620 | |
mbed_official | 0:51ac1d130fd4 | 621 | if (ucp - start_ucp != *lenp) { |
mbed_official | 0:51ac1d130fd4 | 622 | /* this should never happen, because peer_mtu should be 1500 */ |
mbed_official | 0:51ac1d130fd4 | 623 | LCPDEBUG(LOG_ERR, ("Bug in lcp_addci: wrong length\n")); |
mbed_official | 0:51ac1d130fd4 | 624 | } |
mbed_official | 0:51ac1d130fd4 | 625 | } |
mbed_official | 0:51ac1d130fd4 | 626 | |
mbed_official | 0:51ac1d130fd4 | 627 | |
mbed_official | 0:51ac1d130fd4 | 628 | /* |
mbed_official | 0:51ac1d130fd4 | 629 | * lcp_ackci - Ack our CIs. |
mbed_official | 0:51ac1d130fd4 | 630 | * This should not modify any state if the Ack is bad. |
mbed_official | 0:51ac1d130fd4 | 631 | * |
mbed_official | 0:51ac1d130fd4 | 632 | * Returns: |
mbed_official | 0:51ac1d130fd4 | 633 | * 0 - Ack was bad. |
mbed_official | 0:51ac1d130fd4 | 634 | * 1 - Ack was good. |
mbed_official | 0:51ac1d130fd4 | 635 | */ |
mbed_official | 0:51ac1d130fd4 | 636 | static int |
mbed_official | 0:51ac1d130fd4 | 637 | lcp_ackci(fsm *f, u_char *p, int len) |
mbed_official | 0:51ac1d130fd4 | 638 | { |
mbed_official | 0:51ac1d130fd4 | 639 | lcp_options *go = &lcp_gotoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 640 | u_char cilen, citype, cichar; |
mbed_official | 0:51ac1d130fd4 | 641 | u_short cishort; |
mbed_official | 0:51ac1d130fd4 | 642 | u32_t cilong; |
mbed_official | 0:51ac1d130fd4 | 643 | |
mbed_official | 0:51ac1d130fd4 | 644 | /* |
mbed_official | 0:51ac1d130fd4 | 645 | * CIs must be in exactly the same order that we sent. |
mbed_official | 0:51ac1d130fd4 | 646 | * Check packet length and CI length at each step. |
mbed_official | 0:51ac1d130fd4 | 647 | * If we find any deviations, then this packet is bad. |
mbed_official | 0:51ac1d130fd4 | 648 | */ |
mbed_official | 0:51ac1d130fd4 | 649 | #define ACKCIVOID(opt, neg) \ |
mbed_official | 0:51ac1d130fd4 | 650 | if (neg) { \ |
mbed_official | 0:51ac1d130fd4 | 651 | if ((len -= CILEN_VOID) < 0) \ |
mbed_official | 0:51ac1d130fd4 | 652 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 653 | GETCHAR(citype, p); \ |
mbed_official | 0:51ac1d130fd4 | 654 | GETCHAR(cilen, p); \ |
mbed_official | 0:51ac1d130fd4 | 655 | if (cilen != CILEN_VOID || citype != opt) \ |
mbed_official | 0:51ac1d130fd4 | 656 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 657 | } |
mbed_official | 0:51ac1d130fd4 | 658 | #define ACKCISHORT(opt, neg, val) \ |
mbed_official | 0:51ac1d130fd4 | 659 | if (neg) { \ |
mbed_official | 0:51ac1d130fd4 | 660 | if ((len -= CILEN_SHORT) < 0) \ |
mbed_official | 0:51ac1d130fd4 | 661 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 662 | GETCHAR(citype, p); \ |
mbed_official | 0:51ac1d130fd4 | 663 | GETCHAR(cilen, p); \ |
mbed_official | 0:51ac1d130fd4 | 664 | if (cilen != CILEN_SHORT || citype != opt) \ |
mbed_official | 0:51ac1d130fd4 | 665 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 666 | GETSHORT(cishort, p); \ |
mbed_official | 0:51ac1d130fd4 | 667 | if (cishort != val) \ |
mbed_official | 0:51ac1d130fd4 | 668 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 669 | } |
mbed_official | 0:51ac1d130fd4 | 670 | #define ACKCICHAR(opt, neg, val) \ |
mbed_official | 0:51ac1d130fd4 | 671 | if (neg) { \ |
mbed_official | 0:51ac1d130fd4 | 672 | if ((len -= CILEN_CHAR) < 0) \ |
mbed_official | 0:51ac1d130fd4 | 673 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 674 | GETCHAR(citype, p); \ |
mbed_official | 0:51ac1d130fd4 | 675 | GETCHAR(cilen, p); \ |
mbed_official | 0:51ac1d130fd4 | 676 | if (cilen != CILEN_CHAR || citype != opt) \ |
mbed_official | 0:51ac1d130fd4 | 677 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 678 | GETCHAR(cichar, p); \ |
mbed_official | 0:51ac1d130fd4 | 679 | if (cichar != val) \ |
mbed_official | 0:51ac1d130fd4 | 680 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 681 | } |
mbed_official | 0:51ac1d130fd4 | 682 | #define ACKCICHAP(opt, neg, val, digest) \ |
mbed_official | 0:51ac1d130fd4 | 683 | if (neg) { \ |
mbed_official | 0:51ac1d130fd4 | 684 | if ((len -= CILEN_CHAP) < 0) \ |
mbed_official | 0:51ac1d130fd4 | 685 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 686 | GETCHAR(citype, p); \ |
mbed_official | 0:51ac1d130fd4 | 687 | GETCHAR(cilen, p); \ |
mbed_official | 0:51ac1d130fd4 | 688 | if (cilen != CILEN_CHAP || citype != opt) \ |
mbed_official | 0:51ac1d130fd4 | 689 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 690 | GETSHORT(cishort, p); \ |
mbed_official | 0:51ac1d130fd4 | 691 | if (cishort != val) \ |
mbed_official | 0:51ac1d130fd4 | 692 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 693 | GETCHAR(cichar, p); \ |
mbed_official | 0:51ac1d130fd4 | 694 | if (cichar != digest) \ |
mbed_official | 0:51ac1d130fd4 | 695 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 696 | } |
mbed_official | 0:51ac1d130fd4 | 697 | #define ACKCILONG(opt, neg, val) \ |
mbed_official | 0:51ac1d130fd4 | 698 | if (neg) { \ |
mbed_official | 0:51ac1d130fd4 | 699 | if ((len -= CILEN_LONG) < 0) \ |
mbed_official | 0:51ac1d130fd4 | 700 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 701 | GETCHAR(citype, p); \ |
mbed_official | 0:51ac1d130fd4 | 702 | GETCHAR(cilen, p); \ |
mbed_official | 0:51ac1d130fd4 | 703 | if (cilen != CILEN_LONG || citype != opt) \ |
mbed_official | 0:51ac1d130fd4 | 704 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 705 | GETLONG(cilong, p); \ |
mbed_official | 0:51ac1d130fd4 | 706 | if (cilong != val) \ |
mbed_official | 0:51ac1d130fd4 | 707 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 708 | } |
mbed_official | 0:51ac1d130fd4 | 709 | #define ACKCILQR(opt, neg, val) \ |
mbed_official | 0:51ac1d130fd4 | 710 | if (neg) { \ |
mbed_official | 0:51ac1d130fd4 | 711 | if ((len -= CILEN_LQR) < 0) \ |
mbed_official | 0:51ac1d130fd4 | 712 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 713 | GETCHAR(citype, p); \ |
mbed_official | 0:51ac1d130fd4 | 714 | GETCHAR(cilen, p); \ |
mbed_official | 0:51ac1d130fd4 | 715 | if (cilen != CILEN_LQR || citype != opt) \ |
mbed_official | 0:51ac1d130fd4 | 716 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 717 | GETSHORT(cishort, p); \ |
mbed_official | 0:51ac1d130fd4 | 718 | if (cishort != PPP_LQR) \ |
mbed_official | 0:51ac1d130fd4 | 719 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 720 | GETLONG(cilong, p); \ |
mbed_official | 0:51ac1d130fd4 | 721 | if (cilong != val) \ |
mbed_official | 0:51ac1d130fd4 | 722 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 723 | } |
mbed_official | 0:51ac1d130fd4 | 724 | |
mbed_official | 0:51ac1d130fd4 | 725 | ACKCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru); |
mbed_official | 0:51ac1d130fd4 | 726 | ACKCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap); |
mbed_official | 0:51ac1d130fd4 | 727 | ACKCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype); |
mbed_official | 0:51ac1d130fd4 | 728 | ACKCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP); |
mbed_official | 0:51ac1d130fd4 | 729 | ACKCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period); |
mbed_official | 0:51ac1d130fd4 | 730 | ACKCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT); |
mbed_official | 0:51ac1d130fd4 | 731 | ACKCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber); |
mbed_official | 0:51ac1d130fd4 | 732 | ACKCIVOID(CI_PCOMPRESSION, go->neg_pcompression); |
mbed_official | 0:51ac1d130fd4 | 733 | ACKCIVOID(CI_ACCOMPRESSION, go->neg_accompression); |
mbed_official | 0:51ac1d130fd4 | 734 | |
mbed_official | 0:51ac1d130fd4 | 735 | /* |
mbed_official | 0:51ac1d130fd4 | 736 | * If there are any remaining CIs, then this packet is bad. |
mbed_official | 0:51ac1d130fd4 | 737 | */ |
mbed_official | 0:51ac1d130fd4 | 738 | if (len != 0) { |
mbed_official | 0:51ac1d130fd4 | 739 | goto bad; |
mbed_official | 0:51ac1d130fd4 | 740 | } |
mbed_official | 0:51ac1d130fd4 | 741 | LCPDEBUG(LOG_INFO, ("lcp_acki: Ack\n")); |
mbed_official | 0:51ac1d130fd4 | 742 | return (1); |
mbed_official | 0:51ac1d130fd4 | 743 | bad: |
mbed_official | 0:51ac1d130fd4 | 744 | LCPDEBUG(LOG_WARNING, ("lcp_acki: received bad Ack!\n")); |
mbed_official | 0:51ac1d130fd4 | 745 | return (0); |
mbed_official | 0:51ac1d130fd4 | 746 | } |
mbed_official | 0:51ac1d130fd4 | 747 | |
mbed_official | 0:51ac1d130fd4 | 748 | |
mbed_official | 0:51ac1d130fd4 | 749 | /* |
mbed_official | 0:51ac1d130fd4 | 750 | * lcp_nakci - Peer has sent a NAK for some of our CIs. |
mbed_official | 0:51ac1d130fd4 | 751 | * This should not modify any state if the Nak is bad |
mbed_official | 0:51ac1d130fd4 | 752 | * or if LCP is in the LS_OPENED state. |
mbed_official | 0:51ac1d130fd4 | 753 | * |
mbed_official | 0:51ac1d130fd4 | 754 | * Returns: |
mbed_official | 0:51ac1d130fd4 | 755 | * 0 - Nak was bad. |
mbed_official | 0:51ac1d130fd4 | 756 | * 1 - Nak was good. |
mbed_official | 0:51ac1d130fd4 | 757 | */ |
mbed_official | 0:51ac1d130fd4 | 758 | static int |
mbed_official | 0:51ac1d130fd4 | 759 | lcp_nakci(fsm *f, u_char *p, int len) |
mbed_official | 0:51ac1d130fd4 | 760 | { |
mbed_official | 0:51ac1d130fd4 | 761 | lcp_options *go = &lcp_gotoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 762 | lcp_options *wo = &lcp_wantoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 763 | u_char citype, cichar, *next; |
mbed_official | 0:51ac1d130fd4 | 764 | u_short cishort; |
mbed_official | 0:51ac1d130fd4 | 765 | u32_t cilong; |
mbed_official | 0:51ac1d130fd4 | 766 | lcp_options no; /* options we've seen Naks for */ |
mbed_official | 0:51ac1d130fd4 | 767 | lcp_options try; /* options to request next time */ |
mbed_official | 0:51ac1d130fd4 | 768 | int looped_back = 0; |
mbed_official | 0:51ac1d130fd4 | 769 | int cilen; |
mbed_official | 0:51ac1d130fd4 | 770 | |
mbed_official | 0:51ac1d130fd4 | 771 | BZERO(&no, sizeof(no)); |
mbed_official | 0:51ac1d130fd4 | 772 | try = *go; |
mbed_official | 0:51ac1d130fd4 | 773 | |
mbed_official | 0:51ac1d130fd4 | 774 | /* |
mbed_official | 0:51ac1d130fd4 | 775 | * Any Nak'd CIs must be in exactly the same order that we sent. |
mbed_official | 0:51ac1d130fd4 | 776 | * Check packet length and CI length at each step. |
mbed_official | 0:51ac1d130fd4 | 777 | * If we find any deviations, then this packet is bad. |
mbed_official | 0:51ac1d130fd4 | 778 | */ |
mbed_official | 0:51ac1d130fd4 | 779 | #define NAKCIVOID(opt, neg, code) \ |
mbed_official | 0:51ac1d130fd4 | 780 | if (go->neg && \ |
mbed_official | 0:51ac1d130fd4 | 781 | len >= CILEN_VOID && \ |
mbed_official | 0:51ac1d130fd4 | 782 | p[1] == CILEN_VOID && \ |
mbed_official | 0:51ac1d130fd4 | 783 | p[0] == opt) { \ |
mbed_official | 0:51ac1d130fd4 | 784 | len -= CILEN_VOID; \ |
mbed_official | 0:51ac1d130fd4 | 785 | INCPTR(CILEN_VOID, p); \ |
mbed_official | 0:51ac1d130fd4 | 786 | no.neg = 1; \ |
mbed_official | 0:51ac1d130fd4 | 787 | code \ |
mbed_official | 0:51ac1d130fd4 | 788 | } |
mbed_official | 0:51ac1d130fd4 | 789 | #define NAKCICHAP(opt, neg, code) \ |
mbed_official | 0:51ac1d130fd4 | 790 | if (go->neg && \ |
mbed_official | 0:51ac1d130fd4 | 791 | len >= CILEN_CHAP && \ |
mbed_official | 0:51ac1d130fd4 | 792 | p[1] == CILEN_CHAP && \ |
mbed_official | 0:51ac1d130fd4 | 793 | p[0] == opt) { \ |
mbed_official | 0:51ac1d130fd4 | 794 | len -= CILEN_CHAP; \ |
mbed_official | 0:51ac1d130fd4 | 795 | INCPTR(2, p); \ |
mbed_official | 0:51ac1d130fd4 | 796 | GETSHORT(cishort, p); \ |
mbed_official | 0:51ac1d130fd4 | 797 | GETCHAR(cichar, p); \ |
mbed_official | 0:51ac1d130fd4 | 798 | no.neg = 1; \ |
mbed_official | 0:51ac1d130fd4 | 799 | code \ |
mbed_official | 0:51ac1d130fd4 | 800 | } |
mbed_official | 0:51ac1d130fd4 | 801 | #define NAKCICHAR(opt, neg, code) \ |
mbed_official | 0:51ac1d130fd4 | 802 | if (go->neg && \ |
mbed_official | 0:51ac1d130fd4 | 803 | len >= CILEN_CHAR && \ |
mbed_official | 0:51ac1d130fd4 | 804 | p[1] == CILEN_CHAR && \ |
mbed_official | 0:51ac1d130fd4 | 805 | p[0] == opt) { \ |
mbed_official | 0:51ac1d130fd4 | 806 | len -= CILEN_CHAR; \ |
mbed_official | 0:51ac1d130fd4 | 807 | INCPTR(2, p); \ |
mbed_official | 0:51ac1d130fd4 | 808 | GETCHAR(cichar, p); \ |
mbed_official | 0:51ac1d130fd4 | 809 | no.neg = 1; \ |
mbed_official | 0:51ac1d130fd4 | 810 | code \ |
mbed_official | 0:51ac1d130fd4 | 811 | } |
mbed_official | 0:51ac1d130fd4 | 812 | #define NAKCISHORT(opt, neg, code) \ |
mbed_official | 0:51ac1d130fd4 | 813 | if (go->neg && \ |
mbed_official | 0:51ac1d130fd4 | 814 | len >= CILEN_SHORT && \ |
mbed_official | 0:51ac1d130fd4 | 815 | p[1] == CILEN_SHORT && \ |
mbed_official | 0:51ac1d130fd4 | 816 | p[0] == opt) { \ |
mbed_official | 0:51ac1d130fd4 | 817 | len -= CILEN_SHORT; \ |
mbed_official | 0:51ac1d130fd4 | 818 | INCPTR(2, p); \ |
mbed_official | 0:51ac1d130fd4 | 819 | GETSHORT(cishort, p); \ |
mbed_official | 0:51ac1d130fd4 | 820 | no.neg = 1; \ |
mbed_official | 0:51ac1d130fd4 | 821 | code \ |
mbed_official | 0:51ac1d130fd4 | 822 | } |
mbed_official | 0:51ac1d130fd4 | 823 | #define NAKCILONG(opt, neg, code) \ |
mbed_official | 0:51ac1d130fd4 | 824 | if (go->neg && \ |
mbed_official | 0:51ac1d130fd4 | 825 | len >= CILEN_LONG && \ |
mbed_official | 0:51ac1d130fd4 | 826 | p[1] == CILEN_LONG && \ |
mbed_official | 0:51ac1d130fd4 | 827 | p[0] == opt) { \ |
mbed_official | 0:51ac1d130fd4 | 828 | len -= CILEN_LONG; \ |
mbed_official | 0:51ac1d130fd4 | 829 | INCPTR(2, p); \ |
mbed_official | 0:51ac1d130fd4 | 830 | GETLONG(cilong, p); \ |
mbed_official | 0:51ac1d130fd4 | 831 | no.neg = 1; \ |
mbed_official | 0:51ac1d130fd4 | 832 | code \ |
mbed_official | 0:51ac1d130fd4 | 833 | } |
mbed_official | 0:51ac1d130fd4 | 834 | #define NAKCILQR(opt, neg, code) \ |
mbed_official | 0:51ac1d130fd4 | 835 | if (go->neg && \ |
mbed_official | 0:51ac1d130fd4 | 836 | len >= CILEN_LQR && \ |
mbed_official | 0:51ac1d130fd4 | 837 | p[1] == CILEN_LQR && \ |
mbed_official | 0:51ac1d130fd4 | 838 | p[0] == opt) { \ |
mbed_official | 0:51ac1d130fd4 | 839 | len -= CILEN_LQR; \ |
mbed_official | 0:51ac1d130fd4 | 840 | INCPTR(2, p); \ |
mbed_official | 0:51ac1d130fd4 | 841 | GETSHORT(cishort, p); \ |
mbed_official | 0:51ac1d130fd4 | 842 | GETLONG(cilong, p); \ |
mbed_official | 0:51ac1d130fd4 | 843 | no.neg = 1; \ |
mbed_official | 0:51ac1d130fd4 | 844 | code \ |
mbed_official | 0:51ac1d130fd4 | 845 | } |
mbed_official | 0:51ac1d130fd4 | 846 | |
mbed_official | 0:51ac1d130fd4 | 847 | /* |
mbed_official | 0:51ac1d130fd4 | 848 | * We don't care if they want to send us smaller packets than |
mbed_official | 0:51ac1d130fd4 | 849 | * we want. Therefore, accept any MRU less than what we asked for, |
mbed_official | 0:51ac1d130fd4 | 850 | * but then ignore the new value when setting the MRU in the kernel. |
mbed_official | 0:51ac1d130fd4 | 851 | * If they send us a bigger MRU than what we asked, accept it, up to |
mbed_official | 0:51ac1d130fd4 | 852 | * the limit of the default MRU we'd get if we didn't negotiate. |
mbed_official | 0:51ac1d130fd4 | 853 | */ |
mbed_official | 0:51ac1d130fd4 | 854 | if (go->neg_mru && go->mru != PPP_DEFMRU) { |
mbed_official | 0:51ac1d130fd4 | 855 | NAKCISHORT(CI_MRU, neg_mru, |
mbed_official | 0:51ac1d130fd4 | 856 | if (cishort <= wo->mru || cishort < PPP_DEFMRU) { |
mbed_official | 0:51ac1d130fd4 | 857 | try.mru = cishort; |
mbed_official | 0:51ac1d130fd4 | 858 | } |
mbed_official | 0:51ac1d130fd4 | 859 | ); |
mbed_official | 0:51ac1d130fd4 | 860 | } |
mbed_official | 0:51ac1d130fd4 | 861 | |
mbed_official | 0:51ac1d130fd4 | 862 | /* |
mbed_official | 0:51ac1d130fd4 | 863 | * Add any characters they want to our (receive-side) asyncmap. |
mbed_official | 0:51ac1d130fd4 | 864 | */ |
mbed_official | 0:51ac1d130fd4 | 865 | if (go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) { |
mbed_official | 0:51ac1d130fd4 | 866 | NAKCILONG(CI_ASYNCMAP, neg_asyncmap, |
mbed_official | 0:51ac1d130fd4 | 867 | try.asyncmap = go->asyncmap | cilong; |
mbed_official | 0:51ac1d130fd4 | 868 | ); |
mbed_official | 0:51ac1d130fd4 | 869 | } |
mbed_official | 0:51ac1d130fd4 | 870 | |
mbed_official | 0:51ac1d130fd4 | 871 | /* |
mbed_official | 0:51ac1d130fd4 | 872 | * If they've nak'd our authentication-protocol, check whether |
mbed_official | 0:51ac1d130fd4 | 873 | * they are proposing a different protocol, or a different |
mbed_official | 0:51ac1d130fd4 | 874 | * hash algorithm for CHAP. |
mbed_official | 0:51ac1d130fd4 | 875 | */ |
mbed_official | 0:51ac1d130fd4 | 876 | if ((go->neg_chap || go->neg_upap) |
mbed_official | 0:51ac1d130fd4 | 877 | && len >= CILEN_SHORT |
mbed_official | 0:51ac1d130fd4 | 878 | && p[0] == CI_AUTHTYPE && p[1] >= CILEN_SHORT && p[1] <= len) { |
mbed_official | 0:51ac1d130fd4 | 879 | cilen = p[1]; |
mbed_official | 0:51ac1d130fd4 | 880 | len -= cilen; |
mbed_official | 0:51ac1d130fd4 | 881 | no.neg_chap = go->neg_chap; |
mbed_official | 0:51ac1d130fd4 | 882 | no.neg_upap = go->neg_upap; |
mbed_official | 0:51ac1d130fd4 | 883 | INCPTR(2, p); |
mbed_official | 0:51ac1d130fd4 | 884 | GETSHORT(cishort, p); |
mbed_official | 0:51ac1d130fd4 | 885 | if (cishort == PPP_PAP && cilen == CILEN_SHORT) { |
mbed_official | 0:51ac1d130fd4 | 886 | /* |
mbed_official | 0:51ac1d130fd4 | 887 | * If we were asking for CHAP, they obviously don't want to do it. |
mbed_official | 0:51ac1d130fd4 | 888 | * If we weren't asking for CHAP, then we were asking for PAP, |
mbed_official | 0:51ac1d130fd4 | 889 | * in which case this Nak is bad. |
mbed_official | 0:51ac1d130fd4 | 890 | */ |
mbed_official | 0:51ac1d130fd4 | 891 | if (!go->neg_chap) { |
mbed_official | 0:51ac1d130fd4 | 892 | goto bad; |
mbed_official | 0:51ac1d130fd4 | 893 | } |
mbed_official | 0:51ac1d130fd4 | 894 | try.neg_chap = 0; |
mbed_official | 0:51ac1d130fd4 | 895 | |
mbed_official | 0:51ac1d130fd4 | 896 | } else if (cishort == PPP_CHAP && cilen == CILEN_CHAP) { |
mbed_official | 0:51ac1d130fd4 | 897 | GETCHAR(cichar, p); |
mbed_official | 0:51ac1d130fd4 | 898 | if (go->neg_chap) { |
mbed_official | 0:51ac1d130fd4 | 899 | /* |
mbed_official | 0:51ac1d130fd4 | 900 | * We were asking for CHAP/MD5; they must want a different |
mbed_official | 0:51ac1d130fd4 | 901 | * algorithm. If they can't do MD5, we'll have to stop |
mbed_official | 0:51ac1d130fd4 | 902 | * asking for CHAP. |
mbed_official | 0:51ac1d130fd4 | 903 | */ |
mbed_official | 0:51ac1d130fd4 | 904 | if (cichar != go->chap_mdtype) { |
mbed_official | 0:51ac1d130fd4 | 905 | try.neg_chap = 0; |
mbed_official | 0:51ac1d130fd4 | 906 | } |
mbed_official | 0:51ac1d130fd4 | 907 | } else { |
mbed_official | 0:51ac1d130fd4 | 908 | /* |
mbed_official | 0:51ac1d130fd4 | 909 | * Stop asking for PAP if we were asking for it. |
mbed_official | 0:51ac1d130fd4 | 910 | */ |
mbed_official | 0:51ac1d130fd4 | 911 | try.neg_upap = 0; |
mbed_official | 0:51ac1d130fd4 | 912 | } |
mbed_official | 0:51ac1d130fd4 | 913 | |
mbed_official | 0:51ac1d130fd4 | 914 | } else { |
mbed_official | 0:51ac1d130fd4 | 915 | /* |
mbed_official | 0:51ac1d130fd4 | 916 | * We don't recognize what they're suggesting. |
mbed_official | 0:51ac1d130fd4 | 917 | * Stop asking for what we were asking for. |
mbed_official | 0:51ac1d130fd4 | 918 | */ |
mbed_official | 0:51ac1d130fd4 | 919 | if (go->neg_chap) { |
mbed_official | 0:51ac1d130fd4 | 920 | try.neg_chap = 0; |
mbed_official | 0:51ac1d130fd4 | 921 | } else { |
mbed_official | 0:51ac1d130fd4 | 922 | try.neg_upap = 0; |
mbed_official | 0:51ac1d130fd4 | 923 | } |
mbed_official | 0:51ac1d130fd4 | 924 | p += cilen - CILEN_SHORT; |
mbed_official | 0:51ac1d130fd4 | 925 | } |
mbed_official | 0:51ac1d130fd4 | 926 | } |
mbed_official | 0:51ac1d130fd4 | 927 | |
mbed_official | 0:51ac1d130fd4 | 928 | /* |
mbed_official | 0:51ac1d130fd4 | 929 | * If they can't cope with our link quality protocol, we'll have |
mbed_official | 0:51ac1d130fd4 | 930 | * to stop asking for LQR. We haven't got any other protocol. |
mbed_official | 0:51ac1d130fd4 | 931 | * If they Nak the reporting period, take their value XXX ? |
mbed_official | 0:51ac1d130fd4 | 932 | */ |
mbed_official | 0:51ac1d130fd4 | 933 | NAKCILQR(CI_QUALITY, neg_lqr, |
mbed_official | 0:51ac1d130fd4 | 934 | if (cishort != PPP_LQR) { |
mbed_official | 0:51ac1d130fd4 | 935 | try.neg_lqr = 0; |
mbed_official | 0:51ac1d130fd4 | 936 | } else { |
mbed_official | 0:51ac1d130fd4 | 937 | try.lqr_period = cilong; |
mbed_official | 0:51ac1d130fd4 | 938 | } |
mbed_official | 0:51ac1d130fd4 | 939 | ); |
mbed_official | 0:51ac1d130fd4 | 940 | |
mbed_official | 0:51ac1d130fd4 | 941 | /* |
mbed_official | 0:51ac1d130fd4 | 942 | * Only implementing CBCP...not the rest of the callback options |
mbed_official | 0:51ac1d130fd4 | 943 | */ |
mbed_official | 0:51ac1d130fd4 | 944 | NAKCICHAR(CI_CALLBACK, neg_cbcp, |
mbed_official | 0:51ac1d130fd4 | 945 | try.neg_cbcp = 0; |
mbed_official | 0:51ac1d130fd4 | 946 | ); |
mbed_official | 0:51ac1d130fd4 | 947 | |
mbed_official | 0:51ac1d130fd4 | 948 | /* |
mbed_official | 0:51ac1d130fd4 | 949 | * Check for a looped-back line. |
mbed_official | 0:51ac1d130fd4 | 950 | */ |
mbed_official | 0:51ac1d130fd4 | 951 | NAKCILONG(CI_MAGICNUMBER, neg_magicnumber, |
mbed_official | 0:51ac1d130fd4 | 952 | try.magicnumber = magic(); |
mbed_official | 0:51ac1d130fd4 | 953 | looped_back = 1; |
mbed_official | 0:51ac1d130fd4 | 954 | ); |
mbed_official | 0:51ac1d130fd4 | 955 | |
mbed_official | 0:51ac1d130fd4 | 956 | /* |
mbed_official | 0:51ac1d130fd4 | 957 | * Peer shouldn't send Nak for protocol compression or |
mbed_official | 0:51ac1d130fd4 | 958 | * address/control compression requests; they should send |
mbed_official | 0:51ac1d130fd4 | 959 | * a Reject instead. If they send a Nak, treat it as a Reject. |
mbed_official | 0:51ac1d130fd4 | 960 | */ |
mbed_official | 0:51ac1d130fd4 | 961 | NAKCIVOID(CI_PCOMPRESSION, neg_pcompression, |
mbed_official | 0:51ac1d130fd4 | 962 | try.neg_pcompression = 0; |
mbed_official | 0:51ac1d130fd4 | 963 | ); |
mbed_official | 0:51ac1d130fd4 | 964 | NAKCIVOID(CI_ACCOMPRESSION, neg_accompression, |
mbed_official | 0:51ac1d130fd4 | 965 | try.neg_accompression = 0; |
mbed_official | 0:51ac1d130fd4 | 966 | ); |
mbed_official | 0:51ac1d130fd4 | 967 | |
mbed_official | 0:51ac1d130fd4 | 968 | /* |
mbed_official | 0:51ac1d130fd4 | 969 | * There may be remaining CIs, if the peer is requesting negotiation |
mbed_official | 0:51ac1d130fd4 | 970 | * on an option that we didn't include in our request packet. |
mbed_official | 0:51ac1d130fd4 | 971 | * If we see an option that we requested, or one we've already seen |
mbed_official | 0:51ac1d130fd4 | 972 | * in this packet, then this packet is bad. |
mbed_official | 0:51ac1d130fd4 | 973 | * If we wanted to respond by starting to negotiate on the requested |
mbed_official | 0:51ac1d130fd4 | 974 | * option(s), we could, but we don't, because except for the |
mbed_official | 0:51ac1d130fd4 | 975 | * authentication type and quality protocol, if we are not negotiating |
mbed_official | 0:51ac1d130fd4 | 976 | * an option, it is because we were told not to. |
mbed_official | 0:51ac1d130fd4 | 977 | * For the authentication type, the Nak from the peer means |
mbed_official | 0:51ac1d130fd4 | 978 | * `let me authenticate myself with you' which is a bit pointless. |
mbed_official | 0:51ac1d130fd4 | 979 | * For the quality protocol, the Nak means `ask me to send you quality |
mbed_official | 0:51ac1d130fd4 | 980 | * reports', but if we didn't ask for them, we don't want them. |
mbed_official | 0:51ac1d130fd4 | 981 | * An option we don't recognize represents the peer asking to |
mbed_official | 0:51ac1d130fd4 | 982 | * negotiate some option we don't support, so ignore it. |
mbed_official | 0:51ac1d130fd4 | 983 | */ |
mbed_official | 0:51ac1d130fd4 | 984 | while (len > CILEN_VOID) { |
mbed_official | 0:51ac1d130fd4 | 985 | GETCHAR(citype, p); |
mbed_official | 0:51ac1d130fd4 | 986 | GETCHAR(cilen, p); |
mbed_official | 0:51ac1d130fd4 | 987 | if (cilen < CILEN_VOID || (len -= cilen) < 0) { |
mbed_official | 0:51ac1d130fd4 | 988 | goto bad; |
mbed_official | 0:51ac1d130fd4 | 989 | } |
mbed_official | 0:51ac1d130fd4 | 990 | next = p + cilen - 2; |
mbed_official | 0:51ac1d130fd4 | 991 | |
mbed_official | 0:51ac1d130fd4 | 992 | switch (citype) { |
mbed_official | 0:51ac1d130fd4 | 993 | case CI_MRU: |
mbed_official | 0:51ac1d130fd4 | 994 | if ((go->neg_mru && go->mru != PPP_DEFMRU) |
mbed_official | 0:51ac1d130fd4 | 995 | || no.neg_mru || cilen != CILEN_SHORT) { |
mbed_official | 0:51ac1d130fd4 | 996 | goto bad; |
mbed_official | 0:51ac1d130fd4 | 997 | } |
mbed_official | 0:51ac1d130fd4 | 998 | GETSHORT(cishort, p); |
mbed_official | 0:51ac1d130fd4 | 999 | if (cishort < PPP_DEFMRU) { |
mbed_official | 0:51ac1d130fd4 | 1000 | try.mru = cishort; |
mbed_official | 0:51ac1d130fd4 | 1001 | } |
mbed_official | 0:51ac1d130fd4 | 1002 | break; |
mbed_official | 0:51ac1d130fd4 | 1003 | case CI_ASYNCMAP: |
mbed_official | 0:51ac1d130fd4 | 1004 | if ((go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) |
mbed_official | 0:51ac1d130fd4 | 1005 | || no.neg_asyncmap || cilen != CILEN_LONG) { |
mbed_official | 0:51ac1d130fd4 | 1006 | goto bad; |
mbed_official | 0:51ac1d130fd4 | 1007 | } |
mbed_official | 0:51ac1d130fd4 | 1008 | break; |
mbed_official | 0:51ac1d130fd4 | 1009 | case CI_AUTHTYPE: |
mbed_official | 0:51ac1d130fd4 | 1010 | if (go->neg_chap || no.neg_chap || go->neg_upap || no.neg_upap) { |
mbed_official | 0:51ac1d130fd4 | 1011 | goto bad; |
mbed_official | 0:51ac1d130fd4 | 1012 | } |
mbed_official | 0:51ac1d130fd4 | 1013 | break; |
mbed_official | 0:51ac1d130fd4 | 1014 | case CI_MAGICNUMBER: |
mbed_official | 0:51ac1d130fd4 | 1015 | if (go->neg_magicnumber || no.neg_magicnumber || |
mbed_official | 0:51ac1d130fd4 | 1016 | cilen != CILEN_LONG) { |
mbed_official | 0:51ac1d130fd4 | 1017 | goto bad; |
mbed_official | 0:51ac1d130fd4 | 1018 | } |
mbed_official | 0:51ac1d130fd4 | 1019 | break; |
mbed_official | 0:51ac1d130fd4 | 1020 | case CI_PCOMPRESSION: |
mbed_official | 0:51ac1d130fd4 | 1021 | if (go->neg_pcompression || no.neg_pcompression |
mbed_official | 0:51ac1d130fd4 | 1022 | || cilen != CILEN_VOID) { |
mbed_official | 0:51ac1d130fd4 | 1023 | goto bad; |
mbed_official | 0:51ac1d130fd4 | 1024 | } |
mbed_official | 0:51ac1d130fd4 | 1025 | break; |
mbed_official | 0:51ac1d130fd4 | 1026 | case CI_ACCOMPRESSION: |
mbed_official | 0:51ac1d130fd4 | 1027 | if (go->neg_accompression || no.neg_accompression |
mbed_official | 0:51ac1d130fd4 | 1028 | || cilen != CILEN_VOID) { |
mbed_official | 0:51ac1d130fd4 | 1029 | goto bad; |
mbed_official | 0:51ac1d130fd4 | 1030 | } |
mbed_official | 0:51ac1d130fd4 | 1031 | break; |
mbed_official | 0:51ac1d130fd4 | 1032 | case CI_QUALITY: |
mbed_official | 0:51ac1d130fd4 | 1033 | if (go->neg_lqr || no.neg_lqr || cilen != CILEN_LQR) { |
mbed_official | 0:51ac1d130fd4 | 1034 | goto bad; |
mbed_official | 0:51ac1d130fd4 | 1035 | } |
mbed_official | 0:51ac1d130fd4 | 1036 | break; |
mbed_official | 0:51ac1d130fd4 | 1037 | } |
mbed_official | 0:51ac1d130fd4 | 1038 | p = next; |
mbed_official | 0:51ac1d130fd4 | 1039 | } |
mbed_official | 0:51ac1d130fd4 | 1040 | |
mbed_official | 0:51ac1d130fd4 | 1041 | /* If there is still anything left, this packet is bad. */ |
mbed_official | 0:51ac1d130fd4 | 1042 | if (len != 0) { |
mbed_official | 0:51ac1d130fd4 | 1043 | goto bad; |
mbed_official | 0:51ac1d130fd4 | 1044 | } |
mbed_official | 0:51ac1d130fd4 | 1045 | |
mbed_official | 0:51ac1d130fd4 | 1046 | /* |
mbed_official | 0:51ac1d130fd4 | 1047 | * OK, the Nak is good. Now we can update state. |
mbed_official | 0:51ac1d130fd4 | 1048 | */ |
mbed_official | 0:51ac1d130fd4 | 1049 | if (f->state != LS_OPENED) { |
mbed_official | 0:51ac1d130fd4 | 1050 | if (looped_back) { |
mbed_official | 0:51ac1d130fd4 | 1051 | if (++try.numloops >= lcp_loopbackfail) { |
mbed_official | 0:51ac1d130fd4 | 1052 | LCPDEBUG(LOG_NOTICE, ("Serial line is looped back.\n")); |
mbed_official | 0:51ac1d130fd4 | 1053 | lcp_close(f->unit, "Loopback detected"); |
mbed_official | 0:51ac1d130fd4 | 1054 | } |
mbed_official | 0:51ac1d130fd4 | 1055 | } else { |
mbed_official | 0:51ac1d130fd4 | 1056 | try.numloops = 0; |
mbed_official | 0:51ac1d130fd4 | 1057 | } |
mbed_official | 0:51ac1d130fd4 | 1058 | *go = try; |
mbed_official | 0:51ac1d130fd4 | 1059 | } |
mbed_official | 0:51ac1d130fd4 | 1060 | |
mbed_official | 0:51ac1d130fd4 | 1061 | return 1; |
mbed_official | 0:51ac1d130fd4 | 1062 | |
mbed_official | 0:51ac1d130fd4 | 1063 | bad: |
mbed_official | 0:51ac1d130fd4 | 1064 | LCPDEBUG(LOG_WARNING, ("lcp_nakci: received bad Nak!\n")); |
mbed_official | 0:51ac1d130fd4 | 1065 | return 0; |
mbed_official | 0:51ac1d130fd4 | 1066 | } |
mbed_official | 0:51ac1d130fd4 | 1067 | |
mbed_official | 0:51ac1d130fd4 | 1068 | |
mbed_official | 0:51ac1d130fd4 | 1069 | /* |
mbed_official | 0:51ac1d130fd4 | 1070 | * lcp_rejci - Peer has Rejected some of our CIs. |
mbed_official | 0:51ac1d130fd4 | 1071 | * This should not modify any state if the Reject is bad |
mbed_official | 0:51ac1d130fd4 | 1072 | * or if LCP is in the LS_OPENED state. |
mbed_official | 0:51ac1d130fd4 | 1073 | * |
mbed_official | 0:51ac1d130fd4 | 1074 | * Returns: |
mbed_official | 0:51ac1d130fd4 | 1075 | * 0 - Reject was bad. |
mbed_official | 0:51ac1d130fd4 | 1076 | * 1 - Reject was good. |
mbed_official | 0:51ac1d130fd4 | 1077 | */ |
mbed_official | 0:51ac1d130fd4 | 1078 | static int |
mbed_official | 0:51ac1d130fd4 | 1079 | lcp_rejci(fsm *f, u_char *p, int len) |
mbed_official | 0:51ac1d130fd4 | 1080 | { |
mbed_official | 0:51ac1d130fd4 | 1081 | lcp_options *go = &lcp_gotoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 1082 | u_char cichar; |
mbed_official | 0:51ac1d130fd4 | 1083 | u_short cishort; |
mbed_official | 0:51ac1d130fd4 | 1084 | u32_t cilong; |
mbed_official | 0:51ac1d130fd4 | 1085 | lcp_options try; /* options to request next time */ |
mbed_official | 0:51ac1d130fd4 | 1086 | |
mbed_official | 0:51ac1d130fd4 | 1087 | try = *go; |
mbed_official | 0:51ac1d130fd4 | 1088 | |
mbed_official | 0:51ac1d130fd4 | 1089 | /* |
mbed_official | 0:51ac1d130fd4 | 1090 | * Any Rejected CIs must be in exactly the same order that we sent. |
mbed_official | 0:51ac1d130fd4 | 1091 | * Check packet length and CI length at each step. |
mbed_official | 0:51ac1d130fd4 | 1092 | * If we find any deviations, then this packet is bad. |
mbed_official | 0:51ac1d130fd4 | 1093 | */ |
mbed_official | 0:51ac1d130fd4 | 1094 | #define REJCIVOID(opt, neg) \ |
mbed_official | 0:51ac1d130fd4 | 1095 | if (go->neg && \ |
mbed_official | 0:51ac1d130fd4 | 1096 | len >= CILEN_VOID && \ |
mbed_official | 0:51ac1d130fd4 | 1097 | p[1] == CILEN_VOID && \ |
mbed_official | 0:51ac1d130fd4 | 1098 | p[0] == opt) { \ |
mbed_official | 0:51ac1d130fd4 | 1099 | len -= CILEN_VOID; \ |
mbed_official | 0:51ac1d130fd4 | 1100 | INCPTR(CILEN_VOID, p); \ |
mbed_official | 0:51ac1d130fd4 | 1101 | try.neg = 0; \ |
mbed_official | 0:51ac1d130fd4 | 1102 | LCPDEBUG(LOG_INFO, ("lcp_rejci: void opt %d rejected\n", opt)); \ |
mbed_official | 0:51ac1d130fd4 | 1103 | } |
mbed_official | 0:51ac1d130fd4 | 1104 | #define REJCISHORT(opt, neg, val) \ |
mbed_official | 0:51ac1d130fd4 | 1105 | if (go->neg && \ |
mbed_official | 0:51ac1d130fd4 | 1106 | len >= CILEN_SHORT && \ |
mbed_official | 0:51ac1d130fd4 | 1107 | p[1] == CILEN_SHORT && \ |
mbed_official | 0:51ac1d130fd4 | 1108 | p[0] == opt) { \ |
mbed_official | 0:51ac1d130fd4 | 1109 | len -= CILEN_SHORT; \ |
mbed_official | 0:51ac1d130fd4 | 1110 | INCPTR(2, p); \ |
mbed_official | 0:51ac1d130fd4 | 1111 | GETSHORT(cishort, p); \ |
mbed_official | 0:51ac1d130fd4 | 1112 | /* Check rejected value. */ \ |
mbed_official | 0:51ac1d130fd4 | 1113 | if (cishort != val) { \ |
mbed_official | 0:51ac1d130fd4 | 1114 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 1115 | } \ |
mbed_official | 0:51ac1d130fd4 | 1116 | try.neg = 0; \ |
mbed_official | 0:51ac1d130fd4 | 1117 | LCPDEBUG(LOG_INFO, ("lcp_rejci: short opt %d rejected\n", opt)); \ |
mbed_official | 0:51ac1d130fd4 | 1118 | } |
mbed_official | 0:51ac1d130fd4 | 1119 | #define REJCICHAP(opt, neg, val, digest) \ |
mbed_official | 0:51ac1d130fd4 | 1120 | if (go->neg && \ |
mbed_official | 0:51ac1d130fd4 | 1121 | len >= CILEN_CHAP && \ |
mbed_official | 0:51ac1d130fd4 | 1122 | p[1] == CILEN_CHAP && \ |
mbed_official | 0:51ac1d130fd4 | 1123 | p[0] == opt) { \ |
mbed_official | 0:51ac1d130fd4 | 1124 | len -= CILEN_CHAP; \ |
mbed_official | 0:51ac1d130fd4 | 1125 | INCPTR(2, p); \ |
mbed_official | 0:51ac1d130fd4 | 1126 | GETSHORT(cishort, p); \ |
mbed_official | 0:51ac1d130fd4 | 1127 | GETCHAR(cichar, p); \ |
mbed_official | 0:51ac1d130fd4 | 1128 | /* Check rejected value. */ \ |
mbed_official | 0:51ac1d130fd4 | 1129 | if (cishort != val || cichar != digest) { \ |
mbed_official | 0:51ac1d130fd4 | 1130 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 1131 | } \ |
mbed_official | 0:51ac1d130fd4 | 1132 | try.neg = 0; \ |
mbed_official | 0:51ac1d130fd4 | 1133 | try.neg_upap = 0; \ |
mbed_official | 0:51ac1d130fd4 | 1134 | LCPDEBUG(LOG_INFO, ("lcp_rejci: chap opt %d rejected\n", opt)); \ |
mbed_official | 0:51ac1d130fd4 | 1135 | } |
mbed_official | 0:51ac1d130fd4 | 1136 | #define REJCILONG(opt, neg, val) \ |
mbed_official | 0:51ac1d130fd4 | 1137 | if (go->neg && \ |
mbed_official | 0:51ac1d130fd4 | 1138 | len >= CILEN_LONG && \ |
mbed_official | 0:51ac1d130fd4 | 1139 | p[1] == CILEN_LONG && \ |
mbed_official | 0:51ac1d130fd4 | 1140 | p[0] == opt) { \ |
mbed_official | 0:51ac1d130fd4 | 1141 | len -= CILEN_LONG; \ |
mbed_official | 0:51ac1d130fd4 | 1142 | INCPTR(2, p); \ |
mbed_official | 0:51ac1d130fd4 | 1143 | GETLONG(cilong, p); \ |
mbed_official | 0:51ac1d130fd4 | 1144 | /* Check rejected value. */ \ |
mbed_official | 0:51ac1d130fd4 | 1145 | if (cilong != val) { \ |
mbed_official | 0:51ac1d130fd4 | 1146 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 1147 | } \ |
mbed_official | 0:51ac1d130fd4 | 1148 | try.neg = 0; \ |
mbed_official | 0:51ac1d130fd4 | 1149 | LCPDEBUG(LOG_INFO, ("lcp_rejci: long opt %d rejected\n", opt)); \ |
mbed_official | 0:51ac1d130fd4 | 1150 | } |
mbed_official | 0:51ac1d130fd4 | 1151 | #define REJCILQR(opt, neg, val) \ |
mbed_official | 0:51ac1d130fd4 | 1152 | if (go->neg && \ |
mbed_official | 0:51ac1d130fd4 | 1153 | len >= CILEN_LQR && \ |
mbed_official | 0:51ac1d130fd4 | 1154 | p[1] == CILEN_LQR && \ |
mbed_official | 0:51ac1d130fd4 | 1155 | p[0] == opt) { \ |
mbed_official | 0:51ac1d130fd4 | 1156 | len -= CILEN_LQR; \ |
mbed_official | 0:51ac1d130fd4 | 1157 | INCPTR(2, p); \ |
mbed_official | 0:51ac1d130fd4 | 1158 | GETSHORT(cishort, p); \ |
mbed_official | 0:51ac1d130fd4 | 1159 | GETLONG(cilong, p); \ |
mbed_official | 0:51ac1d130fd4 | 1160 | /* Check rejected value. */ \ |
mbed_official | 0:51ac1d130fd4 | 1161 | if (cishort != PPP_LQR || cilong != val) { \ |
mbed_official | 0:51ac1d130fd4 | 1162 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 1163 | } \ |
mbed_official | 0:51ac1d130fd4 | 1164 | try.neg = 0; \ |
mbed_official | 0:51ac1d130fd4 | 1165 | LCPDEBUG(LOG_INFO, ("lcp_rejci: LQR opt %d rejected\n", opt)); \ |
mbed_official | 0:51ac1d130fd4 | 1166 | } |
mbed_official | 0:51ac1d130fd4 | 1167 | #define REJCICBCP(opt, neg, val) \ |
mbed_official | 0:51ac1d130fd4 | 1168 | if (go->neg && \ |
mbed_official | 0:51ac1d130fd4 | 1169 | len >= CILEN_CBCP && \ |
mbed_official | 0:51ac1d130fd4 | 1170 | p[1] == CILEN_CBCP && \ |
mbed_official | 0:51ac1d130fd4 | 1171 | p[0] == opt) { \ |
mbed_official | 0:51ac1d130fd4 | 1172 | len -= CILEN_CBCP; \ |
mbed_official | 0:51ac1d130fd4 | 1173 | INCPTR(2, p); \ |
mbed_official | 0:51ac1d130fd4 | 1174 | GETCHAR(cichar, p); \ |
mbed_official | 0:51ac1d130fd4 | 1175 | /* Check rejected value. */ \ |
mbed_official | 0:51ac1d130fd4 | 1176 | if (cichar != val) { \ |
mbed_official | 0:51ac1d130fd4 | 1177 | goto bad; \ |
mbed_official | 0:51ac1d130fd4 | 1178 | } \ |
mbed_official | 0:51ac1d130fd4 | 1179 | try.neg = 0; \ |
mbed_official | 0:51ac1d130fd4 | 1180 | LCPDEBUG(LOG_INFO, ("lcp_rejci: Callback opt %d rejected\n", opt)); \ |
mbed_official | 0:51ac1d130fd4 | 1181 | } |
mbed_official | 0:51ac1d130fd4 | 1182 | |
mbed_official | 0:51ac1d130fd4 | 1183 | REJCISHORT(CI_MRU, neg_mru, go->mru); |
mbed_official | 0:51ac1d130fd4 | 1184 | REJCILONG(CI_ASYNCMAP, neg_asyncmap, go->asyncmap); |
mbed_official | 0:51ac1d130fd4 | 1185 | REJCICHAP(CI_AUTHTYPE, neg_chap, PPP_CHAP, go->chap_mdtype); |
mbed_official | 0:51ac1d130fd4 | 1186 | if (!go->neg_chap) { |
mbed_official | 0:51ac1d130fd4 | 1187 | REJCISHORT(CI_AUTHTYPE, neg_upap, PPP_PAP); |
mbed_official | 0:51ac1d130fd4 | 1188 | } |
mbed_official | 0:51ac1d130fd4 | 1189 | REJCILQR(CI_QUALITY, neg_lqr, go->lqr_period); |
mbed_official | 0:51ac1d130fd4 | 1190 | REJCICBCP(CI_CALLBACK, neg_cbcp, CBCP_OPT); |
mbed_official | 0:51ac1d130fd4 | 1191 | REJCILONG(CI_MAGICNUMBER, neg_magicnumber, go->magicnumber); |
mbed_official | 0:51ac1d130fd4 | 1192 | REJCIVOID(CI_PCOMPRESSION, neg_pcompression); |
mbed_official | 0:51ac1d130fd4 | 1193 | REJCIVOID(CI_ACCOMPRESSION, neg_accompression); |
mbed_official | 0:51ac1d130fd4 | 1194 | |
mbed_official | 0:51ac1d130fd4 | 1195 | /* |
mbed_official | 0:51ac1d130fd4 | 1196 | * If there are any remaining CIs, then this packet is bad. |
mbed_official | 0:51ac1d130fd4 | 1197 | */ |
mbed_official | 0:51ac1d130fd4 | 1198 | if (len != 0) { |
mbed_official | 0:51ac1d130fd4 | 1199 | goto bad; |
mbed_official | 0:51ac1d130fd4 | 1200 | } |
mbed_official | 0:51ac1d130fd4 | 1201 | /* |
mbed_official | 0:51ac1d130fd4 | 1202 | * Now we can update state. |
mbed_official | 0:51ac1d130fd4 | 1203 | */ |
mbed_official | 0:51ac1d130fd4 | 1204 | if (f->state != LS_OPENED) { |
mbed_official | 0:51ac1d130fd4 | 1205 | *go = try; |
mbed_official | 0:51ac1d130fd4 | 1206 | } |
mbed_official | 0:51ac1d130fd4 | 1207 | return 1; |
mbed_official | 0:51ac1d130fd4 | 1208 | |
mbed_official | 0:51ac1d130fd4 | 1209 | bad: |
mbed_official | 0:51ac1d130fd4 | 1210 | LCPDEBUG(LOG_WARNING, ("lcp_rejci: received bad Reject!\n")); |
mbed_official | 0:51ac1d130fd4 | 1211 | return 0; |
mbed_official | 0:51ac1d130fd4 | 1212 | } |
mbed_official | 0:51ac1d130fd4 | 1213 | |
mbed_official | 0:51ac1d130fd4 | 1214 | |
mbed_official | 0:51ac1d130fd4 | 1215 | /* |
mbed_official | 0:51ac1d130fd4 | 1216 | * lcp_reqci - Check the peer's requested CIs and send appropriate response. |
mbed_official | 0:51ac1d130fd4 | 1217 | * |
mbed_official | 0:51ac1d130fd4 | 1218 | * Returns: CONFACK, CONFNAK or CONFREJ and input packet modified |
mbed_official | 0:51ac1d130fd4 | 1219 | * appropriately. If reject_if_disagree is non-zero, doesn't return |
mbed_official | 0:51ac1d130fd4 | 1220 | * CONFNAK; returns CONFREJ if it can't return CONFACK. |
mbed_official | 0:51ac1d130fd4 | 1221 | */ |
mbed_official | 0:51ac1d130fd4 | 1222 | static int |
mbed_official | 0:51ac1d130fd4 | 1223 | lcp_reqci(fsm *f, |
mbed_official | 0:51ac1d130fd4 | 1224 | u_char *inp, /* Requested CIs */ |
mbed_official | 0:51ac1d130fd4 | 1225 | int *lenp, /* Length of requested CIs */ |
mbed_official | 0:51ac1d130fd4 | 1226 | int reject_if_disagree) |
mbed_official | 0:51ac1d130fd4 | 1227 | { |
mbed_official | 0:51ac1d130fd4 | 1228 | lcp_options *go = &lcp_gotoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 1229 | lcp_options *ho = &lcp_hisoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 1230 | lcp_options *ao = &lcp_allowoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 1231 | u_char *cip, *next; /* Pointer to current and next CIs */ |
mbed_official | 0:51ac1d130fd4 | 1232 | int cilen, citype; /* Parsed len, type */ |
mbed_official | 0:51ac1d130fd4 | 1233 | u_char cichar; /* Parsed char value */ |
mbed_official | 0:51ac1d130fd4 | 1234 | u_short cishort; /* Parsed short value */ |
mbed_official | 0:51ac1d130fd4 | 1235 | u32_t cilong; /* Parse long value */ |
mbed_official | 0:51ac1d130fd4 | 1236 | int rc = CONFACK; /* Final packet return code */ |
mbed_official | 0:51ac1d130fd4 | 1237 | int orc; /* Individual option return code */ |
mbed_official | 0:51ac1d130fd4 | 1238 | u_char *p; /* Pointer to next char to parse */ |
mbed_official | 0:51ac1d130fd4 | 1239 | u_char *rejp; /* Pointer to next char in reject frame */ |
mbed_official | 0:51ac1d130fd4 | 1240 | u_char *nakp; /* Pointer to next char in Nak frame */ |
mbed_official | 0:51ac1d130fd4 | 1241 | int l = *lenp; /* Length left */ |
mbed_official | 0:51ac1d130fd4 | 1242 | #if TRACELCP > 0 |
mbed_official | 0:51ac1d130fd4 | 1243 | char traceBuf[80]; |
mbed_official | 0:51ac1d130fd4 | 1244 | size_t traceNdx = 0; |
mbed_official | 0:51ac1d130fd4 | 1245 | #endif |
mbed_official | 0:51ac1d130fd4 | 1246 | |
mbed_official | 0:51ac1d130fd4 | 1247 | /* |
mbed_official | 0:51ac1d130fd4 | 1248 | * Reset all his options. |
mbed_official | 0:51ac1d130fd4 | 1249 | */ |
mbed_official | 0:51ac1d130fd4 | 1250 | BZERO(ho, sizeof(*ho)); |
mbed_official | 0:51ac1d130fd4 | 1251 | |
mbed_official | 0:51ac1d130fd4 | 1252 | /* |
mbed_official | 0:51ac1d130fd4 | 1253 | * Process all his options. |
mbed_official | 0:51ac1d130fd4 | 1254 | */ |
mbed_official | 0:51ac1d130fd4 | 1255 | next = inp; |
mbed_official | 0:51ac1d130fd4 | 1256 | nakp = nak_buffer; |
mbed_official | 0:51ac1d130fd4 | 1257 | rejp = inp; |
mbed_official | 0:51ac1d130fd4 | 1258 | while (l) { |
mbed_official | 0:51ac1d130fd4 | 1259 | orc = CONFACK; /* Assume success */ |
mbed_official | 0:51ac1d130fd4 | 1260 | cip = p = next; /* Remember begining of CI */ |
mbed_official | 0:51ac1d130fd4 | 1261 | if (l < 2 || /* Not enough data for CI header or */ |
mbed_official | 0:51ac1d130fd4 | 1262 | p[1] < 2 || /* CI length too small or */ |
mbed_official | 0:51ac1d130fd4 | 1263 | p[1] > l) { /* CI length too big? */ |
mbed_official | 0:51ac1d130fd4 | 1264 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: bad CI length!\n")); |
mbed_official | 0:51ac1d130fd4 | 1265 | orc = CONFREJ; /* Reject bad CI */ |
mbed_official | 0:51ac1d130fd4 | 1266 | cilen = l; /* Reject till end of packet */ |
mbed_official | 0:51ac1d130fd4 | 1267 | l = 0; /* Don't loop again */ |
mbed_official | 0:51ac1d130fd4 | 1268 | citype = 0; |
mbed_official | 0:51ac1d130fd4 | 1269 | goto endswitch; |
mbed_official | 0:51ac1d130fd4 | 1270 | } |
mbed_official | 0:51ac1d130fd4 | 1271 | GETCHAR(citype, p); /* Parse CI type */ |
mbed_official | 0:51ac1d130fd4 | 1272 | GETCHAR(cilen, p); /* Parse CI length */ |
mbed_official | 0:51ac1d130fd4 | 1273 | l -= cilen; /* Adjust remaining length */ |
mbed_official | 0:51ac1d130fd4 | 1274 | next += cilen; /* Step to next CI */ |
mbed_official | 0:51ac1d130fd4 | 1275 | |
mbed_official | 0:51ac1d130fd4 | 1276 | switch (citype) { /* Check CI type */ |
mbed_official | 0:51ac1d130fd4 | 1277 | case CI_MRU: |
mbed_official | 0:51ac1d130fd4 | 1278 | if (!ao->neg_mru) { /* Allow option? */ |
mbed_official | 0:51ac1d130fd4 | 1279 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - not allowed\n")); |
mbed_official | 0:51ac1d130fd4 | 1280 | orc = CONFREJ; /* Reject CI */ |
mbed_official | 0:51ac1d130fd4 | 1281 | break; |
mbed_official | 0:51ac1d130fd4 | 1282 | } else if (cilen != CILEN_SHORT) { /* Check CI length */ |
mbed_official | 0:51ac1d130fd4 | 1283 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - bad length\n")); |
mbed_official | 0:51ac1d130fd4 | 1284 | orc = CONFREJ; /* Reject CI */ |
mbed_official | 0:51ac1d130fd4 | 1285 | break; |
mbed_official | 0:51ac1d130fd4 | 1286 | } |
mbed_official | 0:51ac1d130fd4 | 1287 | GETSHORT(cishort, p); /* Parse MRU */ |
mbed_official | 0:51ac1d130fd4 | 1288 | |
mbed_official | 0:51ac1d130fd4 | 1289 | /* |
mbed_official | 0:51ac1d130fd4 | 1290 | * He must be able to receive at least our minimum. |
mbed_official | 0:51ac1d130fd4 | 1291 | * No need to check a maximum. If he sends a large number, |
mbed_official | 0:51ac1d130fd4 | 1292 | * we'll just ignore it. |
mbed_official | 0:51ac1d130fd4 | 1293 | */ |
mbed_official | 0:51ac1d130fd4 | 1294 | if (cishort < PPP_MINMRU) { |
mbed_official | 0:51ac1d130fd4 | 1295 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak - MRU too small\n")); |
mbed_official | 0:51ac1d130fd4 | 1296 | orc = CONFNAK; /* Nak CI */ |
mbed_official | 0:51ac1d130fd4 | 1297 | PUTCHAR(CI_MRU, nakp); |
mbed_official | 0:51ac1d130fd4 | 1298 | PUTCHAR(CILEN_SHORT, nakp); |
mbed_official | 0:51ac1d130fd4 | 1299 | PUTSHORT(PPP_MINMRU, nakp); /* Give him a hint */ |
mbed_official | 0:51ac1d130fd4 | 1300 | break; |
mbed_official | 0:51ac1d130fd4 | 1301 | } |
mbed_official | 0:51ac1d130fd4 | 1302 | ho->neg_mru = 1; /* Remember he sent MRU */ |
mbed_official | 0:51ac1d130fd4 | 1303 | ho->mru = cishort; /* And remember value */ |
mbed_official | 0:51ac1d130fd4 | 1304 | #if TRACELCP > 0 |
mbed_official | 0:51ac1d130fd4 | 1305 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MRU %d", cishort); |
mbed_official | 0:51ac1d130fd4 | 1306 | traceNdx = strlen(traceBuf); |
mbed_official | 0:51ac1d130fd4 | 1307 | #endif |
mbed_official | 0:51ac1d130fd4 | 1308 | break; |
mbed_official | 0:51ac1d130fd4 | 1309 | |
mbed_official | 0:51ac1d130fd4 | 1310 | case CI_ASYNCMAP: |
mbed_official | 0:51ac1d130fd4 | 1311 | if (!ao->neg_asyncmap) { |
mbed_official | 0:51ac1d130fd4 | 1312 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP not allowed\n")); |
mbed_official | 0:51ac1d130fd4 | 1313 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1314 | break; |
mbed_official | 0:51ac1d130fd4 | 1315 | } else if (cilen != CILEN_LONG) { |
mbed_official | 0:51ac1d130fd4 | 1316 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP bad length\n")); |
mbed_official | 0:51ac1d130fd4 | 1317 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1318 | break; |
mbed_official | 0:51ac1d130fd4 | 1319 | } |
mbed_official | 0:51ac1d130fd4 | 1320 | GETLONG(cilong, p); |
mbed_official | 0:51ac1d130fd4 | 1321 | |
mbed_official | 0:51ac1d130fd4 | 1322 | /* |
mbed_official | 0:51ac1d130fd4 | 1323 | * Asyncmap must have set at least the bits |
mbed_official | 0:51ac1d130fd4 | 1324 | * which are set in lcp_allowoptions[unit].asyncmap. |
mbed_official | 0:51ac1d130fd4 | 1325 | */ |
mbed_official | 0:51ac1d130fd4 | 1326 | if ((ao->asyncmap & ~cilong) != 0) { |
mbed_official | 0:51ac1d130fd4 | 1327 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak ASYNCMAP %lX missing %lX\n", |
mbed_official | 0:51ac1d130fd4 | 1328 | cilong, ao->asyncmap)); |
mbed_official | 0:51ac1d130fd4 | 1329 | orc = CONFNAK; |
mbed_official | 0:51ac1d130fd4 | 1330 | PUTCHAR(CI_ASYNCMAP, nakp); |
mbed_official | 0:51ac1d130fd4 | 1331 | PUTCHAR(CILEN_LONG, nakp); |
mbed_official | 0:51ac1d130fd4 | 1332 | PUTLONG(ao->asyncmap | cilong, nakp); |
mbed_official | 0:51ac1d130fd4 | 1333 | break; |
mbed_official | 0:51ac1d130fd4 | 1334 | } |
mbed_official | 0:51ac1d130fd4 | 1335 | ho->neg_asyncmap = 1; |
mbed_official | 0:51ac1d130fd4 | 1336 | ho->asyncmap = cilong; |
mbed_official | 0:51ac1d130fd4 | 1337 | #if TRACELCP > 0 |
mbed_official | 0:51ac1d130fd4 | 1338 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ASYNCMAP=%lX", cilong); |
mbed_official | 0:51ac1d130fd4 | 1339 | traceNdx = strlen(traceBuf); |
mbed_official | 0:51ac1d130fd4 | 1340 | #endif |
mbed_official | 0:51ac1d130fd4 | 1341 | break; |
mbed_official | 0:51ac1d130fd4 | 1342 | |
mbed_official | 0:51ac1d130fd4 | 1343 | case CI_AUTHTYPE: |
mbed_official | 0:51ac1d130fd4 | 1344 | if (cilen < CILEN_SHORT) { |
mbed_official | 0:51ac1d130fd4 | 1345 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE missing arg\n")); |
mbed_official | 0:51ac1d130fd4 | 1346 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1347 | break; |
mbed_official | 0:51ac1d130fd4 | 1348 | } else if (!(ao->neg_upap || ao->neg_chap)) { |
mbed_official | 0:51ac1d130fd4 | 1349 | /* |
mbed_official | 0:51ac1d130fd4 | 1350 | * Reject the option if we're not willing to authenticate. |
mbed_official | 0:51ac1d130fd4 | 1351 | */ |
mbed_official | 0:51ac1d130fd4 | 1352 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE not allowed\n")); |
mbed_official | 0:51ac1d130fd4 | 1353 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1354 | break; |
mbed_official | 0:51ac1d130fd4 | 1355 | } |
mbed_official | 0:51ac1d130fd4 | 1356 | GETSHORT(cishort, p); |
mbed_official | 0:51ac1d130fd4 | 1357 | |
mbed_official | 0:51ac1d130fd4 | 1358 | /* |
mbed_official | 0:51ac1d130fd4 | 1359 | * Authtype must be UPAP or CHAP. |
mbed_official | 0:51ac1d130fd4 | 1360 | * |
mbed_official | 0:51ac1d130fd4 | 1361 | * Note: if both ao->neg_upap and ao->neg_chap are set, |
mbed_official | 0:51ac1d130fd4 | 1362 | * and the peer sends a Configure-Request with two |
mbed_official | 0:51ac1d130fd4 | 1363 | * authenticate-protocol requests, one for CHAP and one |
mbed_official | 0:51ac1d130fd4 | 1364 | * for UPAP, then we will reject the second request. |
mbed_official | 0:51ac1d130fd4 | 1365 | * Whether we end up doing CHAP or UPAP depends then on |
mbed_official | 0:51ac1d130fd4 | 1366 | * the ordering of the CIs in the peer's Configure-Request. |
mbed_official | 0:51ac1d130fd4 | 1367 | */ |
mbed_official | 0:51ac1d130fd4 | 1368 | |
mbed_official | 0:51ac1d130fd4 | 1369 | if (cishort == PPP_PAP) { |
mbed_official | 0:51ac1d130fd4 | 1370 | if (ho->neg_chap) { /* we've already accepted CHAP */ |
mbed_official | 0:51ac1d130fd4 | 1371 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP already accepted\n")); |
mbed_official | 0:51ac1d130fd4 | 1372 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1373 | break; |
mbed_official | 0:51ac1d130fd4 | 1374 | } else if (cilen != CILEN_SHORT) { |
mbed_official | 0:51ac1d130fd4 | 1375 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP bad len\n")); |
mbed_official | 0:51ac1d130fd4 | 1376 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1377 | break; |
mbed_official | 0:51ac1d130fd4 | 1378 | } |
mbed_official | 0:51ac1d130fd4 | 1379 | if (!ao->neg_upap) { /* we don't want to do PAP */ |
mbed_official | 0:51ac1d130fd4 | 1380 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE PAP not allowed\n")); |
mbed_official | 0:51ac1d130fd4 | 1381 | orc = CONFNAK; /* NAK it and suggest CHAP */ |
mbed_official | 0:51ac1d130fd4 | 1382 | PUTCHAR(CI_AUTHTYPE, nakp); |
mbed_official | 0:51ac1d130fd4 | 1383 | PUTCHAR(CILEN_CHAP, nakp); |
mbed_official | 0:51ac1d130fd4 | 1384 | PUTSHORT(PPP_CHAP, nakp); |
mbed_official | 0:51ac1d130fd4 | 1385 | PUTCHAR(ao->chap_mdtype, nakp); |
mbed_official | 0:51ac1d130fd4 | 1386 | break; |
mbed_official | 0:51ac1d130fd4 | 1387 | } |
mbed_official | 0:51ac1d130fd4 | 1388 | ho->neg_upap = 1; |
mbed_official | 0:51ac1d130fd4 | 1389 | #if TRACELCP > 0 |
mbed_official | 0:51ac1d130fd4 | 1390 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PAP (%X)", cishort); |
mbed_official | 0:51ac1d130fd4 | 1391 | traceNdx = strlen(traceBuf); |
mbed_official | 0:51ac1d130fd4 | 1392 | #endif |
mbed_official | 0:51ac1d130fd4 | 1393 | break; |
mbed_official | 0:51ac1d130fd4 | 1394 | } |
mbed_official | 0:51ac1d130fd4 | 1395 | if (cishort == PPP_CHAP) { |
mbed_official | 0:51ac1d130fd4 | 1396 | if (ho->neg_upap) { /* we've already accepted PAP */ |
mbed_official | 0:51ac1d130fd4 | 1397 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP accepted PAP\n")); |
mbed_official | 0:51ac1d130fd4 | 1398 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1399 | break; |
mbed_official | 0:51ac1d130fd4 | 1400 | } else if (cilen != CILEN_CHAP) { |
mbed_official | 0:51ac1d130fd4 | 1401 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP bad len\n")); |
mbed_official | 0:51ac1d130fd4 | 1402 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1403 | break; |
mbed_official | 0:51ac1d130fd4 | 1404 | } |
mbed_official | 0:51ac1d130fd4 | 1405 | if (!ao->neg_chap) { /* we don't want to do CHAP */ |
mbed_official | 0:51ac1d130fd4 | 1406 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP not allowed\n")); |
mbed_official | 0:51ac1d130fd4 | 1407 | orc = CONFNAK; /* NAK it and suggest PAP */ |
mbed_official | 0:51ac1d130fd4 | 1408 | PUTCHAR(CI_AUTHTYPE, nakp); |
mbed_official | 0:51ac1d130fd4 | 1409 | PUTCHAR(CILEN_SHORT, nakp); |
mbed_official | 0:51ac1d130fd4 | 1410 | PUTSHORT(PPP_PAP, nakp); |
mbed_official | 0:51ac1d130fd4 | 1411 | break; |
mbed_official | 0:51ac1d130fd4 | 1412 | } |
mbed_official | 0:51ac1d130fd4 | 1413 | GETCHAR(cichar, p); /* get digest type*/ |
mbed_official | 0:51ac1d130fd4 | 1414 | if (cichar != CHAP_DIGEST_MD5 |
mbed_official | 0:51ac1d130fd4 | 1415 | #if MSCHAP_SUPPORT |
mbed_official | 0:51ac1d130fd4 | 1416 | && cichar != CHAP_MICROSOFT |
mbed_official | 0:51ac1d130fd4 | 1417 | #endif |
mbed_official | 0:51ac1d130fd4 | 1418 | ) { |
mbed_official | 0:51ac1d130fd4 | 1419 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP digest=%d\n", (int)cichar)); |
mbed_official | 0:51ac1d130fd4 | 1420 | orc = CONFNAK; |
mbed_official | 0:51ac1d130fd4 | 1421 | PUTCHAR(CI_AUTHTYPE, nakp); |
mbed_official | 0:51ac1d130fd4 | 1422 | PUTCHAR(CILEN_CHAP, nakp); |
mbed_official | 0:51ac1d130fd4 | 1423 | PUTSHORT(PPP_CHAP, nakp); |
mbed_official | 0:51ac1d130fd4 | 1424 | PUTCHAR(ao->chap_mdtype, nakp); |
mbed_official | 0:51ac1d130fd4 | 1425 | break; |
mbed_official | 0:51ac1d130fd4 | 1426 | } |
mbed_official | 0:51ac1d130fd4 | 1427 | #if TRACELCP > 0 |
mbed_official | 0:51ac1d130fd4 | 1428 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CHAP %X,%d", cishort, (int)cichar); |
mbed_official | 0:51ac1d130fd4 | 1429 | traceNdx = strlen(traceBuf); |
mbed_official | 0:51ac1d130fd4 | 1430 | #endif |
mbed_official | 0:51ac1d130fd4 | 1431 | ho->chap_mdtype = cichar; /* save md type */ |
mbed_official | 0:51ac1d130fd4 | 1432 | ho->neg_chap = 1; |
mbed_official | 0:51ac1d130fd4 | 1433 | break; |
mbed_official | 0:51ac1d130fd4 | 1434 | } |
mbed_official | 0:51ac1d130fd4 | 1435 | |
mbed_official | 0:51ac1d130fd4 | 1436 | /* |
mbed_official | 0:51ac1d130fd4 | 1437 | * We don't recognize the protocol they're asking for. |
mbed_official | 0:51ac1d130fd4 | 1438 | * Nak it with something we're willing to do. |
mbed_official | 0:51ac1d130fd4 | 1439 | * (At this point we know ao->neg_upap || ao->neg_chap.) |
mbed_official | 0:51ac1d130fd4 | 1440 | */ |
mbed_official | 0:51ac1d130fd4 | 1441 | orc = CONFNAK; |
mbed_official | 0:51ac1d130fd4 | 1442 | PUTCHAR(CI_AUTHTYPE, nakp); |
mbed_official | 0:51ac1d130fd4 | 1443 | if (ao->neg_chap) { |
mbed_official | 0:51ac1d130fd4 | 1444 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req CHAP\n", cishort)); |
mbed_official | 0:51ac1d130fd4 | 1445 | PUTCHAR(CILEN_CHAP, nakp); |
mbed_official | 0:51ac1d130fd4 | 1446 | PUTSHORT(PPP_CHAP, nakp); |
mbed_official | 0:51ac1d130fd4 | 1447 | PUTCHAR(ao->chap_mdtype, nakp); |
mbed_official | 0:51ac1d130fd4 | 1448 | } else { |
mbed_official | 0:51ac1d130fd4 | 1449 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req PAP\n", cishort)); |
mbed_official | 0:51ac1d130fd4 | 1450 | PUTCHAR(CILEN_SHORT, nakp); |
mbed_official | 0:51ac1d130fd4 | 1451 | PUTSHORT(PPP_PAP, nakp); |
mbed_official | 0:51ac1d130fd4 | 1452 | } |
mbed_official | 0:51ac1d130fd4 | 1453 | break; |
mbed_official | 0:51ac1d130fd4 | 1454 | |
mbed_official | 0:51ac1d130fd4 | 1455 | case CI_QUALITY: |
mbed_official | 0:51ac1d130fd4 | 1456 | GETSHORT(cishort, p); |
mbed_official | 0:51ac1d130fd4 | 1457 | GETLONG(cilong, p); |
mbed_official | 0:51ac1d130fd4 | 1458 | #if TRACELCP > 0 |
mbed_official | 0:51ac1d130fd4 | 1459 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " QUALITY (%x %x)", cishort, (unsigned int) cilong); |
mbed_official | 0:51ac1d130fd4 | 1460 | traceNdx = strlen(traceBuf); |
mbed_official | 0:51ac1d130fd4 | 1461 | #endif |
mbed_official | 0:51ac1d130fd4 | 1462 | |
mbed_official | 0:51ac1d130fd4 | 1463 | if (!ao->neg_lqr || |
mbed_official | 0:51ac1d130fd4 | 1464 | cilen != CILEN_LQR) { |
mbed_official | 0:51ac1d130fd4 | 1465 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1466 | break; |
mbed_official | 0:51ac1d130fd4 | 1467 | } |
mbed_official | 0:51ac1d130fd4 | 1468 | |
mbed_official | 0:51ac1d130fd4 | 1469 | /* |
mbed_official | 0:51ac1d130fd4 | 1470 | * Check the protocol and the reporting period. |
mbed_official | 0:51ac1d130fd4 | 1471 | * XXX When should we Nak this, and what with? |
mbed_official | 0:51ac1d130fd4 | 1472 | */ |
mbed_official | 0:51ac1d130fd4 | 1473 | if (cishort != PPP_LQR) { |
mbed_official | 0:51ac1d130fd4 | 1474 | orc = CONFNAK; |
mbed_official | 0:51ac1d130fd4 | 1475 | PUTCHAR(CI_QUALITY, nakp); |
mbed_official | 0:51ac1d130fd4 | 1476 | PUTCHAR(CILEN_LQR, nakp); |
mbed_official | 0:51ac1d130fd4 | 1477 | PUTSHORT(PPP_LQR, nakp); |
mbed_official | 0:51ac1d130fd4 | 1478 | PUTLONG(ao->lqr_period, nakp); |
mbed_official | 0:51ac1d130fd4 | 1479 | break; |
mbed_official | 0:51ac1d130fd4 | 1480 | } |
mbed_official | 0:51ac1d130fd4 | 1481 | break; |
mbed_official | 0:51ac1d130fd4 | 1482 | |
mbed_official | 0:51ac1d130fd4 | 1483 | case CI_MAGICNUMBER: |
mbed_official | 0:51ac1d130fd4 | 1484 | if (!(ao->neg_magicnumber || go->neg_magicnumber) || |
mbed_official | 0:51ac1d130fd4 | 1485 | cilen != CILEN_LONG) { |
mbed_official | 0:51ac1d130fd4 | 1486 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1487 | break; |
mbed_official | 0:51ac1d130fd4 | 1488 | } |
mbed_official | 0:51ac1d130fd4 | 1489 | GETLONG(cilong, p); |
mbed_official | 0:51ac1d130fd4 | 1490 | #if TRACELCP > 0 |
mbed_official | 0:51ac1d130fd4 | 1491 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MAGICNUMBER (%lX)", cilong); |
mbed_official | 0:51ac1d130fd4 | 1492 | traceNdx = strlen(traceBuf); |
mbed_official | 0:51ac1d130fd4 | 1493 | #endif |
mbed_official | 0:51ac1d130fd4 | 1494 | |
mbed_official | 0:51ac1d130fd4 | 1495 | /* |
mbed_official | 0:51ac1d130fd4 | 1496 | * He must have a different magic number. |
mbed_official | 0:51ac1d130fd4 | 1497 | */ |
mbed_official | 0:51ac1d130fd4 | 1498 | if (go->neg_magicnumber && |
mbed_official | 0:51ac1d130fd4 | 1499 | cilong == go->magicnumber) { |
mbed_official | 0:51ac1d130fd4 | 1500 | cilong = magic(); /* Don't put magic() inside macro! */ |
mbed_official | 0:51ac1d130fd4 | 1501 | orc = CONFNAK; |
mbed_official | 0:51ac1d130fd4 | 1502 | PUTCHAR(CI_MAGICNUMBER, nakp); |
mbed_official | 0:51ac1d130fd4 | 1503 | PUTCHAR(CILEN_LONG, nakp); |
mbed_official | 0:51ac1d130fd4 | 1504 | PUTLONG(cilong, nakp); |
mbed_official | 0:51ac1d130fd4 | 1505 | break; |
mbed_official | 0:51ac1d130fd4 | 1506 | } |
mbed_official | 0:51ac1d130fd4 | 1507 | ho->neg_magicnumber = 1; |
mbed_official | 0:51ac1d130fd4 | 1508 | ho->magicnumber = cilong; |
mbed_official | 0:51ac1d130fd4 | 1509 | break; |
mbed_official | 0:51ac1d130fd4 | 1510 | |
mbed_official | 0:51ac1d130fd4 | 1511 | |
mbed_official | 0:51ac1d130fd4 | 1512 | case CI_PCOMPRESSION: |
mbed_official | 0:51ac1d130fd4 | 1513 | #if TRACELCP > 0 |
mbed_official | 0:51ac1d130fd4 | 1514 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PCOMPRESSION"); |
mbed_official | 0:51ac1d130fd4 | 1515 | traceNdx = strlen(traceBuf); |
mbed_official | 0:51ac1d130fd4 | 1516 | #endif |
mbed_official | 0:51ac1d130fd4 | 1517 | if (!ao->neg_pcompression || |
mbed_official | 0:51ac1d130fd4 | 1518 | cilen != CILEN_VOID) { |
mbed_official | 0:51ac1d130fd4 | 1519 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1520 | break; |
mbed_official | 0:51ac1d130fd4 | 1521 | } |
mbed_official | 0:51ac1d130fd4 | 1522 | ho->neg_pcompression = 1; |
mbed_official | 0:51ac1d130fd4 | 1523 | break; |
mbed_official | 0:51ac1d130fd4 | 1524 | |
mbed_official | 0:51ac1d130fd4 | 1525 | case CI_ACCOMPRESSION: |
mbed_official | 0:51ac1d130fd4 | 1526 | #if TRACELCP > 0 |
mbed_official | 0:51ac1d130fd4 | 1527 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ACCOMPRESSION"); |
mbed_official | 0:51ac1d130fd4 | 1528 | traceNdx = strlen(traceBuf); |
mbed_official | 0:51ac1d130fd4 | 1529 | #endif |
mbed_official | 0:51ac1d130fd4 | 1530 | if (!ao->neg_accompression || |
mbed_official | 0:51ac1d130fd4 | 1531 | cilen != CILEN_VOID) { |
mbed_official | 0:51ac1d130fd4 | 1532 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1533 | break; |
mbed_official | 0:51ac1d130fd4 | 1534 | } |
mbed_official | 0:51ac1d130fd4 | 1535 | ho->neg_accompression = 1; |
mbed_official | 0:51ac1d130fd4 | 1536 | break; |
mbed_official | 0:51ac1d130fd4 | 1537 | |
mbed_official | 0:51ac1d130fd4 | 1538 | case CI_MRRU: |
mbed_official | 0:51ac1d130fd4 | 1539 | #if TRACELCP > 0 |
mbed_official | 0:51ac1d130fd4 | 1540 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_MRRU"); |
mbed_official | 0:51ac1d130fd4 | 1541 | traceNdx = strlen(traceBuf); |
mbed_official | 0:51ac1d130fd4 | 1542 | #endif |
mbed_official | 0:51ac1d130fd4 | 1543 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1544 | break; |
mbed_official | 0:51ac1d130fd4 | 1545 | |
mbed_official | 0:51ac1d130fd4 | 1546 | case CI_SSNHF: |
mbed_official | 0:51ac1d130fd4 | 1547 | #if TRACELCP > 0 |
mbed_official | 0:51ac1d130fd4 | 1548 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_SSNHF"); |
mbed_official | 0:51ac1d130fd4 | 1549 | traceNdx = strlen(traceBuf); |
mbed_official | 0:51ac1d130fd4 | 1550 | #endif |
mbed_official | 0:51ac1d130fd4 | 1551 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1552 | break; |
mbed_official | 0:51ac1d130fd4 | 1553 | |
mbed_official | 0:51ac1d130fd4 | 1554 | case CI_EPDISC: |
mbed_official | 0:51ac1d130fd4 | 1555 | #if TRACELCP > 0 |
mbed_official | 0:51ac1d130fd4 | 1556 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_EPDISC"); |
mbed_official | 0:51ac1d130fd4 | 1557 | traceNdx = strlen(traceBuf); |
mbed_official | 0:51ac1d130fd4 | 1558 | #endif |
mbed_official | 0:51ac1d130fd4 | 1559 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1560 | break; |
mbed_official | 0:51ac1d130fd4 | 1561 | |
mbed_official | 0:51ac1d130fd4 | 1562 | default: |
mbed_official | 0:51ac1d130fd4 | 1563 | #if TRACELCP |
mbed_official | 0:51ac1d130fd4 | 1564 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " unknown %d", citype); |
mbed_official | 0:51ac1d130fd4 | 1565 | traceNdx = strlen(traceBuf); |
mbed_official | 0:51ac1d130fd4 | 1566 | #endif |
mbed_official | 0:51ac1d130fd4 | 1567 | orc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1568 | break; |
mbed_official | 0:51ac1d130fd4 | 1569 | } |
mbed_official | 0:51ac1d130fd4 | 1570 | |
mbed_official | 0:51ac1d130fd4 | 1571 | endswitch: |
mbed_official | 0:51ac1d130fd4 | 1572 | #if TRACELCP |
mbed_official | 0:51ac1d130fd4 | 1573 | if (traceNdx >= 80 - 32) { |
mbed_official | 0:51ac1d130fd4 | 1574 | LCPDEBUG(LOG_INFO, ("lcp_reqci: rcvd%s\n", traceBuf)); |
mbed_official | 0:51ac1d130fd4 | 1575 | traceNdx = 0; |
mbed_official | 0:51ac1d130fd4 | 1576 | } |
mbed_official | 0:51ac1d130fd4 | 1577 | #endif |
mbed_official | 0:51ac1d130fd4 | 1578 | if (orc == CONFACK && /* Good CI */ |
mbed_official | 0:51ac1d130fd4 | 1579 | rc != CONFACK) { /* but prior CI wasnt? */ |
mbed_official | 0:51ac1d130fd4 | 1580 | continue; /* Don't send this one */ |
mbed_official | 0:51ac1d130fd4 | 1581 | } |
mbed_official | 0:51ac1d130fd4 | 1582 | |
mbed_official | 0:51ac1d130fd4 | 1583 | if (orc == CONFNAK) { /* Nak this CI? */ |
mbed_official | 0:51ac1d130fd4 | 1584 | if (reject_if_disagree /* Getting fed up with sending NAKs? */ |
mbed_official | 0:51ac1d130fd4 | 1585 | && citype != CI_MAGICNUMBER) { |
mbed_official | 0:51ac1d130fd4 | 1586 | orc = CONFREJ; /* Get tough if so */ |
mbed_official | 0:51ac1d130fd4 | 1587 | } else { |
mbed_official | 0:51ac1d130fd4 | 1588 | if (rc == CONFREJ) { /* Rejecting prior CI? */ |
mbed_official | 0:51ac1d130fd4 | 1589 | continue; /* Don't send this one */ |
mbed_official | 0:51ac1d130fd4 | 1590 | } |
mbed_official | 0:51ac1d130fd4 | 1591 | rc = CONFNAK; |
mbed_official | 0:51ac1d130fd4 | 1592 | } |
mbed_official | 0:51ac1d130fd4 | 1593 | } |
mbed_official | 0:51ac1d130fd4 | 1594 | if (orc == CONFREJ) { /* Reject this CI */ |
mbed_official | 0:51ac1d130fd4 | 1595 | rc = CONFREJ; |
mbed_official | 0:51ac1d130fd4 | 1596 | if (cip != rejp) { /* Need to move rejected CI? */ |
mbed_official | 0:51ac1d130fd4 | 1597 | BCOPY(cip, rejp, cilen); /* Move it */ |
mbed_official | 0:51ac1d130fd4 | 1598 | } |
mbed_official | 0:51ac1d130fd4 | 1599 | INCPTR(cilen, rejp); /* Update output pointer */ |
mbed_official | 0:51ac1d130fd4 | 1600 | } |
mbed_official | 0:51ac1d130fd4 | 1601 | } |
mbed_official | 0:51ac1d130fd4 | 1602 | |
mbed_official | 0:51ac1d130fd4 | 1603 | /* |
mbed_official | 0:51ac1d130fd4 | 1604 | * If we wanted to send additional NAKs (for unsent CIs), the |
mbed_official | 0:51ac1d130fd4 | 1605 | * code would go here. The extra NAKs would go at *nakp. |
mbed_official | 0:51ac1d130fd4 | 1606 | * At present there are no cases where we want to ask the |
mbed_official | 0:51ac1d130fd4 | 1607 | * peer to negotiate an option. |
mbed_official | 0:51ac1d130fd4 | 1608 | */ |
mbed_official | 0:51ac1d130fd4 | 1609 | |
mbed_official | 0:51ac1d130fd4 | 1610 | switch (rc) { |
mbed_official | 0:51ac1d130fd4 | 1611 | case CONFACK: |
mbed_official | 0:51ac1d130fd4 | 1612 | *lenp = (int)(next - inp); |
mbed_official | 0:51ac1d130fd4 | 1613 | break; |
mbed_official | 0:51ac1d130fd4 | 1614 | case CONFNAK: |
mbed_official | 0:51ac1d130fd4 | 1615 | /* |
mbed_official | 0:51ac1d130fd4 | 1616 | * Copy the Nak'd options from the nak_buffer to the caller's buffer. |
mbed_official | 0:51ac1d130fd4 | 1617 | */ |
mbed_official | 0:51ac1d130fd4 | 1618 | *lenp = (int)(nakp - nak_buffer); |
mbed_official | 0:51ac1d130fd4 | 1619 | BCOPY(nak_buffer, inp, *lenp); |
mbed_official | 0:51ac1d130fd4 | 1620 | break; |
mbed_official | 0:51ac1d130fd4 | 1621 | case CONFREJ: |
mbed_official | 0:51ac1d130fd4 | 1622 | *lenp = (int)(rejp - inp); |
mbed_official | 0:51ac1d130fd4 | 1623 | break; |
mbed_official | 0:51ac1d130fd4 | 1624 | } |
mbed_official | 0:51ac1d130fd4 | 1625 | |
mbed_official | 0:51ac1d130fd4 | 1626 | #if TRACELCP > 0 |
mbed_official | 0:51ac1d130fd4 | 1627 | if (traceNdx > 0) { |
mbed_official | 0:51ac1d130fd4 | 1628 | LCPDEBUG(LOG_INFO, ("lcp_reqci: %s\n", traceBuf)); |
mbed_official | 0:51ac1d130fd4 | 1629 | } |
mbed_official | 0:51ac1d130fd4 | 1630 | #endif |
mbed_official | 0:51ac1d130fd4 | 1631 | LCPDEBUG(LOG_INFO, ("lcp_reqci: returning CONF%s.\n", CODENAME(rc))); |
mbed_official | 0:51ac1d130fd4 | 1632 | return (rc); /* Return final code */ |
mbed_official | 0:51ac1d130fd4 | 1633 | } |
mbed_official | 0:51ac1d130fd4 | 1634 | |
mbed_official | 0:51ac1d130fd4 | 1635 | |
mbed_official | 0:51ac1d130fd4 | 1636 | /* |
mbed_official | 0:51ac1d130fd4 | 1637 | * lcp_up - LCP has come UP. |
mbed_official | 0:51ac1d130fd4 | 1638 | */ |
mbed_official | 0:51ac1d130fd4 | 1639 | static void |
mbed_official | 0:51ac1d130fd4 | 1640 | lcp_up(fsm *f) |
mbed_official | 0:51ac1d130fd4 | 1641 | { |
mbed_official | 0:51ac1d130fd4 | 1642 | lcp_options *wo = &lcp_wantoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 1643 | lcp_options *ho = &lcp_hisoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 1644 | lcp_options *go = &lcp_gotoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 1645 | lcp_options *ao = &lcp_allowoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 1646 | |
mbed_official | 0:51ac1d130fd4 | 1647 | if (!go->neg_magicnumber) { |
mbed_official | 0:51ac1d130fd4 | 1648 | go->magicnumber = 0; |
mbed_official | 0:51ac1d130fd4 | 1649 | } |
mbed_official | 0:51ac1d130fd4 | 1650 | if (!ho->neg_magicnumber) { |
mbed_official | 0:51ac1d130fd4 | 1651 | ho->magicnumber = 0; |
mbed_official | 0:51ac1d130fd4 | 1652 | } |
mbed_official | 0:51ac1d130fd4 | 1653 | |
mbed_official | 0:51ac1d130fd4 | 1654 | /* |
mbed_official | 0:51ac1d130fd4 | 1655 | * Set our MTU to the smaller of the MTU we wanted and |
mbed_official | 0:51ac1d130fd4 | 1656 | * the MRU our peer wanted. If we negotiated an MRU, |
mbed_official | 0:51ac1d130fd4 | 1657 | * set our MRU to the larger of value we wanted and |
mbed_official | 0:51ac1d130fd4 | 1658 | * the value we got in the negotiation. |
mbed_official | 0:51ac1d130fd4 | 1659 | */ |
mbed_official | 0:51ac1d130fd4 | 1660 | ppp_send_config(f->unit, LWIP_MIN(ao->mru, (ho->neg_mru? ho->mru: PPP_MRU)), |
mbed_official | 0:51ac1d130fd4 | 1661 | (ho->neg_asyncmap? ho->asyncmap: 0xffffffffl), |
mbed_official | 0:51ac1d130fd4 | 1662 | ho->neg_pcompression, ho->neg_accompression); |
mbed_official | 0:51ac1d130fd4 | 1663 | /* |
mbed_official | 0:51ac1d130fd4 | 1664 | * If the asyncmap hasn't been negotiated, we really should |
mbed_official | 0:51ac1d130fd4 | 1665 | * set the receive asyncmap to ffffffff, but we set it to 0 |
mbed_official | 0:51ac1d130fd4 | 1666 | * for backwards contemptibility. |
mbed_official | 0:51ac1d130fd4 | 1667 | */ |
mbed_official | 0:51ac1d130fd4 | 1668 | ppp_recv_config(f->unit, (go->neg_mru? LWIP_MAX(wo->mru, go->mru): PPP_MRU), |
mbed_official | 0:51ac1d130fd4 | 1669 | (go->neg_asyncmap? go->asyncmap: 0x00000000), |
mbed_official | 0:51ac1d130fd4 | 1670 | go->neg_pcompression, go->neg_accompression); |
mbed_official | 0:51ac1d130fd4 | 1671 | |
mbed_official | 0:51ac1d130fd4 | 1672 | if (ho->neg_mru) { |
mbed_official | 0:51ac1d130fd4 | 1673 | peer_mru[f->unit] = ho->mru; |
mbed_official | 0:51ac1d130fd4 | 1674 | } |
mbed_official | 0:51ac1d130fd4 | 1675 | |
mbed_official | 0:51ac1d130fd4 | 1676 | lcp_echo_lowerup(f->unit); /* Enable echo messages */ |
mbed_official | 0:51ac1d130fd4 | 1677 | |
mbed_official | 0:51ac1d130fd4 | 1678 | link_established(f->unit); /* The link is up; authenticate now */ |
mbed_official | 0:51ac1d130fd4 | 1679 | } |
mbed_official | 0:51ac1d130fd4 | 1680 | |
mbed_official | 0:51ac1d130fd4 | 1681 | |
mbed_official | 0:51ac1d130fd4 | 1682 | /* |
mbed_official | 0:51ac1d130fd4 | 1683 | * lcp_down - LCP has gone DOWN. |
mbed_official | 0:51ac1d130fd4 | 1684 | * |
mbed_official | 0:51ac1d130fd4 | 1685 | * Alert other protocols. |
mbed_official | 0:51ac1d130fd4 | 1686 | */ |
mbed_official | 0:51ac1d130fd4 | 1687 | static void |
mbed_official | 0:51ac1d130fd4 | 1688 | lcp_down(fsm *f) |
mbed_official | 0:51ac1d130fd4 | 1689 | { |
mbed_official | 0:51ac1d130fd4 | 1690 | lcp_options *go = &lcp_gotoptions[f->unit]; |
mbed_official | 0:51ac1d130fd4 | 1691 | |
mbed_official | 0:51ac1d130fd4 | 1692 | lcp_echo_lowerdown(f->unit); |
mbed_official | 0:51ac1d130fd4 | 1693 | |
mbed_official | 0:51ac1d130fd4 | 1694 | link_down(f->unit); |
mbed_official | 0:51ac1d130fd4 | 1695 | |
mbed_official | 0:51ac1d130fd4 | 1696 | ppp_send_config(f->unit, PPP_MRU, 0xffffffffl, 0, 0); |
mbed_official | 0:51ac1d130fd4 | 1697 | ppp_recv_config(f->unit, PPP_MRU, |
mbed_official | 0:51ac1d130fd4 | 1698 | (go->neg_asyncmap? go->asyncmap: 0x00000000), |
mbed_official | 0:51ac1d130fd4 | 1699 | go->neg_pcompression, go->neg_accompression); |
mbed_official | 0:51ac1d130fd4 | 1700 | peer_mru[f->unit] = PPP_MRU; |
mbed_official | 0:51ac1d130fd4 | 1701 | } |
mbed_official | 0:51ac1d130fd4 | 1702 | |
mbed_official | 0:51ac1d130fd4 | 1703 | |
mbed_official | 0:51ac1d130fd4 | 1704 | /* |
mbed_official | 0:51ac1d130fd4 | 1705 | * lcp_starting - LCP needs the lower layer up. |
mbed_official | 0:51ac1d130fd4 | 1706 | */ |
mbed_official | 0:51ac1d130fd4 | 1707 | static void |
mbed_official | 0:51ac1d130fd4 | 1708 | lcp_starting(fsm *f) |
mbed_official | 0:51ac1d130fd4 | 1709 | { |
mbed_official | 0:51ac1d130fd4 | 1710 | link_required(f->unit); /* lwip: currently does nothing */ |
mbed_official | 0:51ac1d130fd4 | 1711 | } |
mbed_official | 0:51ac1d130fd4 | 1712 | |
mbed_official | 0:51ac1d130fd4 | 1713 | |
mbed_official | 0:51ac1d130fd4 | 1714 | /* |
mbed_official | 0:51ac1d130fd4 | 1715 | * lcp_finished - LCP has finished with the lower layer. |
mbed_official | 0:51ac1d130fd4 | 1716 | */ |
mbed_official | 0:51ac1d130fd4 | 1717 | static void |
mbed_official | 0:51ac1d130fd4 | 1718 | lcp_finished(fsm *f) |
mbed_official | 0:51ac1d130fd4 | 1719 | { |
mbed_official | 0:51ac1d130fd4 | 1720 | link_terminated(f->unit); /* we are finished with the link */ |
mbed_official | 0:51ac1d130fd4 | 1721 | } |
mbed_official | 0:51ac1d130fd4 | 1722 | |
mbed_official | 0:51ac1d130fd4 | 1723 | |
mbed_official | 0:51ac1d130fd4 | 1724 | #if PPP_ADDITIONAL_CALLBACKS |
mbed_official | 0:51ac1d130fd4 | 1725 | /* |
mbed_official | 0:51ac1d130fd4 | 1726 | * print_string - print a readable representation of a string using |
mbed_official | 0:51ac1d130fd4 | 1727 | * printer. |
mbed_official | 0:51ac1d130fd4 | 1728 | */ |
mbed_official | 0:51ac1d130fd4 | 1729 | static void |
mbed_official | 0:51ac1d130fd4 | 1730 | print_string( char *p, int len, void (*printer) (void *, char *, ...), void *arg) |
mbed_official | 0:51ac1d130fd4 | 1731 | { |
mbed_official | 0:51ac1d130fd4 | 1732 | int c; |
mbed_official | 0:51ac1d130fd4 | 1733 | |
mbed_official | 0:51ac1d130fd4 | 1734 | printer(arg, "\""); |
mbed_official | 0:51ac1d130fd4 | 1735 | for (; len > 0; --len) { |
mbed_official | 0:51ac1d130fd4 | 1736 | c = *p++; |
mbed_official | 0:51ac1d130fd4 | 1737 | if (' ' <= c && c <= '~') { |
mbed_official | 0:51ac1d130fd4 | 1738 | if (c == '\\' || c == '"') { |
mbed_official | 0:51ac1d130fd4 | 1739 | printer(arg, "\\"); |
mbed_official | 0:51ac1d130fd4 | 1740 | } |
mbed_official | 0:51ac1d130fd4 | 1741 | printer(arg, "%c", c); |
mbed_official | 0:51ac1d130fd4 | 1742 | } else { |
mbed_official | 0:51ac1d130fd4 | 1743 | switch (c) { |
mbed_official | 0:51ac1d130fd4 | 1744 | case '\n': |
mbed_official | 0:51ac1d130fd4 | 1745 | printer(arg, "\\n"); |
mbed_official | 0:51ac1d130fd4 | 1746 | break; |
mbed_official | 0:51ac1d130fd4 | 1747 | case '\r': |
mbed_official | 0:51ac1d130fd4 | 1748 | printer(arg, "\\r"); |
mbed_official | 0:51ac1d130fd4 | 1749 | break; |
mbed_official | 0:51ac1d130fd4 | 1750 | case '\t': |
mbed_official | 0:51ac1d130fd4 | 1751 | printer(arg, "\\t"); |
mbed_official | 0:51ac1d130fd4 | 1752 | break; |
mbed_official | 0:51ac1d130fd4 | 1753 | default: |
mbed_official | 0:51ac1d130fd4 | 1754 | printer(arg, "\\%.3o", c); |
mbed_official | 0:51ac1d130fd4 | 1755 | } |
mbed_official | 0:51ac1d130fd4 | 1756 | } |
mbed_official | 0:51ac1d130fd4 | 1757 | } |
mbed_official | 0:51ac1d130fd4 | 1758 | printer(arg, "\""); |
mbed_official | 0:51ac1d130fd4 | 1759 | } |
mbed_official | 0:51ac1d130fd4 | 1760 | |
mbed_official | 0:51ac1d130fd4 | 1761 | |
mbed_official | 0:51ac1d130fd4 | 1762 | /* |
mbed_official | 0:51ac1d130fd4 | 1763 | * lcp_printpkt - print the contents of an LCP packet. |
mbed_official | 0:51ac1d130fd4 | 1764 | */ |
mbed_official | 0:51ac1d130fd4 | 1765 | static char *lcp_codenames[] = { |
mbed_official | 0:51ac1d130fd4 | 1766 | "ConfReq", "ConfAck", "ConfNak", "ConfRej", |
mbed_official | 0:51ac1d130fd4 | 1767 | "TermReq", "TermAck", "CodeRej", "ProtRej", |
mbed_official | 0:51ac1d130fd4 | 1768 | "EchoReq", "EchoRep", "DiscReq" |
mbed_official | 0:51ac1d130fd4 | 1769 | }; |
mbed_official | 0:51ac1d130fd4 | 1770 | |
mbed_official | 0:51ac1d130fd4 | 1771 | static int |
mbed_official | 0:51ac1d130fd4 | 1772 | lcp_printpkt( u_char *p, int plen, void (*printer) (void *, char *, ...), void *arg) |
mbed_official | 0:51ac1d130fd4 | 1773 | { |
mbed_official | 0:51ac1d130fd4 | 1774 | int code, id, len, olen; |
mbed_official | 0:51ac1d130fd4 | 1775 | u_char *pstart, *optend; |
mbed_official | 0:51ac1d130fd4 | 1776 | u_short cishort; |
mbed_official | 0:51ac1d130fd4 | 1777 | u32_t cilong; |
mbed_official | 0:51ac1d130fd4 | 1778 | |
mbed_official | 0:51ac1d130fd4 | 1779 | if (plen < HEADERLEN) { |
mbed_official | 0:51ac1d130fd4 | 1780 | return 0; |
mbed_official | 0:51ac1d130fd4 | 1781 | } |
mbed_official | 0:51ac1d130fd4 | 1782 | pstart = p; |
mbed_official | 0:51ac1d130fd4 | 1783 | GETCHAR(code, p); |
mbed_official | 0:51ac1d130fd4 | 1784 | GETCHAR(id, p); |
mbed_official | 0:51ac1d130fd4 | 1785 | GETSHORT(len, p); |
mbed_official | 0:51ac1d130fd4 | 1786 | if (len < HEADERLEN || len > plen) { |
mbed_official | 0:51ac1d130fd4 | 1787 | return 0; |
mbed_official | 0:51ac1d130fd4 | 1788 | } |
mbed_official | 0:51ac1d130fd4 | 1789 | |
mbed_official | 0:51ac1d130fd4 | 1790 | if (code >= 1 && code <= sizeof(lcp_codenames) / sizeof(char *)) { |
mbed_official | 0:51ac1d130fd4 | 1791 | printer(arg, " %s", lcp_codenames[code-1]); |
mbed_official | 0:51ac1d130fd4 | 1792 | } else { |
mbed_official | 0:51ac1d130fd4 | 1793 | printer(arg, " code=0x%x", code); |
mbed_official | 0:51ac1d130fd4 | 1794 | } |
mbed_official | 0:51ac1d130fd4 | 1795 | printer(arg, " id=0x%x", id); |
mbed_official | 0:51ac1d130fd4 | 1796 | len -= HEADERLEN; |
mbed_official | 0:51ac1d130fd4 | 1797 | switch (code) { |
mbed_official | 0:51ac1d130fd4 | 1798 | case CONFREQ: |
mbed_official | 0:51ac1d130fd4 | 1799 | case CONFACK: |
mbed_official | 0:51ac1d130fd4 | 1800 | case CONFNAK: |
mbed_official | 0:51ac1d130fd4 | 1801 | case CONFREJ: |
mbed_official | 0:51ac1d130fd4 | 1802 | /* print option list */ |
mbed_official | 0:51ac1d130fd4 | 1803 | while (len >= 2) { |
mbed_official | 0:51ac1d130fd4 | 1804 | GETCHAR(code, p); |
mbed_official | 0:51ac1d130fd4 | 1805 | GETCHAR(olen, p); |
mbed_official | 0:51ac1d130fd4 | 1806 | p -= 2; |
mbed_official | 0:51ac1d130fd4 | 1807 | if (olen < 2 || olen > len) { |
mbed_official | 0:51ac1d130fd4 | 1808 | break; |
mbed_official | 0:51ac1d130fd4 | 1809 | } |
mbed_official | 0:51ac1d130fd4 | 1810 | printer(arg, " <"); |
mbed_official | 0:51ac1d130fd4 | 1811 | len -= olen; |
mbed_official | 0:51ac1d130fd4 | 1812 | optend = p + olen; |
mbed_official | 0:51ac1d130fd4 | 1813 | switch (code) { |
mbed_official | 0:51ac1d130fd4 | 1814 | case CI_MRU: |
mbed_official | 0:51ac1d130fd4 | 1815 | if (olen == CILEN_SHORT) { |
mbed_official | 0:51ac1d130fd4 | 1816 | p += 2; |
mbed_official | 0:51ac1d130fd4 | 1817 | GETSHORT(cishort, p); |
mbed_official | 0:51ac1d130fd4 | 1818 | printer(arg, "mru %d", cishort); |
mbed_official | 0:51ac1d130fd4 | 1819 | } |
mbed_official | 0:51ac1d130fd4 | 1820 | break; |
mbed_official | 0:51ac1d130fd4 | 1821 | case CI_ASYNCMAP: |
mbed_official | 0:51ac1d130fd4 | 1822 | if (olen == CILEN_LONG) { |
mbed_official | 0:51ac1d130fd4 | 1823 | p += 2; |
mbed_official | 0:51ac1d130fd4 | 1824 | GETLONG(cilong, p); |
mbed_official | 0:51ac1d130fd4 | 1825 | printer(arg, "asyncmap 0x%lx", cilong); |
mbed_official | 0:51ac1d130fd4 | 1826 | } |
mbed_official | 0:51ac1d130fd4 | 1827 | break; |
mbed_official | 0:51ac1d130fd4 | 1828 | case CI_AUTHTYPE: |
mbed_official | 0:51ac1d130fd4 | 1829 | if (olen >= CILEN_SHORT) { |
mbed_official | 0:51ac1d130fd4 | 1830 | p += 2; |
mbed_official | 0:51ac1d130fd4 | 1831 | printer(arg, "auth "); |
mbed_official | 0:51ac1d130fd4 | 1832 | GETSHORT(cishort, p); |
mbed_official | 0:51ac1d130fd4 | 1833 | switch (cishort) { |
mbed_official | 0:51ac1d130fd4 | 1834 | case PPP_PAP: |
mbed_official | 0:51ac1d130fd4 | 1835 | printer(arg, "pap"); |
mbed_official | 0:51ac1d130fd4 | 1836 | break; |
mbed_official | 0:51ac1d130fd4 | 1837 | case PPP_CHAP: |
mbed_official | 0:51ac1d130fd4 | 1838 | printer(arg, "chap"); |
mbed_official | 0:51ac1d130fd4 | 1839 | break; |
mbed_official | 0:51ac1d130fd4 | 1840 | default: |
mbed_official | 0:51ac1d130fd4 | 1841 | printer(arg, "0x%x", cishort); |
mbed_official | 0:51ac1d130fd4 | 1842 | } |
mbed_official | 0:51ac1d130fd4 | 1843 | } |
mbed_official | 0:51ac1d130fd4 | 1844 | break; |
mbed_official | 0:51ac1d130fd4 | 1845 | case CI_QUALITY: |
mbed_official | 0:51ac1d130fd4 | 1846 | if (olen >= CILEN_SHORT) { |
mbed_official | 0:51ac1d130fd4 | 1847 | p += 2; |
mbed_official | 0:51ac1d130fd4 | 1848 | printer(arg, "quality "); |
mbed_official | 0:51ac1d130fd4 | 1849 | GETSHORT(cishort, p); |
mbed_official | 0:51ac1d130fd4 | 1850 | switch (cishort) { |
mbed_official | 0:51ac1d130fd4 | 1851 | case PPP_LQR: |
mbed_official | 0:51ac1d130fd4 | 1852 | printer(arg, "lqr"); |
mbed_official | 0:51ac1d130fd4 | 1853 | break; |
mbed_official | 0:51ac1d130fd4 | 1854 | default: |
mbed_official | 0:51ac1d130fd4 | 1855 | printer(arg, "0x%x", cishort); |
mbed_official | 0:51ac1d130fd4 | 1856 | } |
mbed_official | 0:51ac1d130fd4 | 1857 | } |
mbed_official | 0:51ac1d130fd4 | 1858 | break; |
mbed_official | 0:51ac1d130fd4 | 1859 | case CI_CALLBACK: |
mbed_official | 0:51ac1d130fd4 | 1860 | if (olen >= CILEN_CHAR) { |
mbed_official | 0:51ac1d130fd4 | 1861 | p += 2; |
mbed_official | 0:51ac1d130fd4 | 1862 | printer(arg, "callback "); |
mbed_official | 0:51ac1d130fd4 | 1863 | GETSHORT(cishort, p); |
mbed_official | 0:51ac1d130fd4 | 1864 | switch (cishort) { |
mbed_official | 0:51ac1d130fd4 | 1865 | case CBCP_OPT: |
mbed_official | 0:51ac1d130fd4 | 1866 | printer(arg, "CBCP"); |
mbed_official | 0:51ac1d130fd4 | 1867 | break; |
mbed_official | 0:51ac1d130fd4 | 1868 | default: |
mbed_official | 0:51ac1d130fd4 | 1869 | printer(arg, "0x%x", cishort); |
mbed_official | 0:51ac1d130fd4 | 1870 | } |
mbed_official | 0:51ac1d130fd4 | 1871 | } |
mbed_official | 0:51ac1d130fd4 | 1872 | break; |
mbed_official | 0:51ac1d130fd4 | 1873 | case CI_MAGICNUMBER: |
mbed_official | 0:51ac1d130fd4 | 1874 | if (olen == CILEN_LONG) { |
mbed_official | 0:51ac1d130fd4 | 1875 | p += 2; |
mbed_official | 0:51ac1d130fd4 | 1876 | GETLONG(cilong, p); |
mbed_official | 0:51ac1d130fd4 | 1877 | printer(arg, "magic 0x%x", cilong); |
mbed_official | 0:51ac1d130fd4 | 1878 | } |
mbed_official | 0:51ac1d130fd4 | 1879 | break; |
mbed_official | 0:51ac1d130fd4 | 1880 | case CI_PCOMPRESSION: |
mbed_official | 0:51ac1d130fd4 | 1881 | if (olen == CILEN_VOID) { |
mbed_official | 0:51ac1d130fd4 | 1882 | p += 2; |
mbed_official | 0:51ac1d130fd4 | 1883 | printer(arg, "pcomp"); |
mbed_official | 0:51ac1d130fd4 | 1884 | } |
mbed_official | 0:51ac1d130fd4 | 1885 | break; |
mbed_official | 0:51ac1d130fd4 | 1886 | case CI_ACCOMPRESSION: |
mbed_official | 0:51ac1d130fd4 | 1887 | if (olen == CILEN_VOID) { |
mbed_official | 0:51ac1d130fd4 | 1888 | p += 2; |
mbed_official | 0:51ac1d130fd4 | 1889 | printer(arg, "accomp"); |
mbed_official | 0:51ac1d130fd4 | 1890 | } |
mbed_official | 0:51ac1d130fd4 | 1891 | break; |
mbed_official | 0:51ac1d130fd4 | 1892 | } |
mbed_official | 0:51ac1d130fd4 | 1893 | while (p < optend) { |
mbed_official | 0:51ac1d130fd4 | 1894 | GETCHAR(code, p); |
mbed_official | 0:51ac1d130fd4 | 1895 | printer(arg, " %.2x", code); |
mbed_official | 0:51ac1d130fd4 | 1896 | } |
mbed_official | 0:51ac1d130fd4 | 1897 | printer(arg, ">"); |
mbed_official | 0:51ac1d130fd4 | 1898 | } |
mbed_official | 0:51ac1d130fd4 | 1899 | break; |
mbed_official | 0:51ac1d130fd4 | 1900 | |
mbed_official | 0:51ac1d130fd4 | 1901 | case TERMACK: |
mbed_official | 0:51ac1d130fd4 | 1902 | case TERMREQ: |
mbed_official | 0:51ac1d130fd4 | 1903 | if (len > 0 && *p >= ' ' && *p < 0x7f) { |
mbed_official | 0:51ac1d130fd4 | 1904 | printer(arg, " "); |
mbed_official | 0:51ac1d130fd4 | 1905 | print_string((char*)p, len, printer, arg); |
mbed_official | 0:51ac1d130fd4 | 1906 | p += len; |
mbed_official | 0:51ac1d130fd4 | 1907 | len = 0; |
mbed_official | 0:51ac1d130fd4 | 1908 | } |
mbed_official | 0:51ac1d130fd4 | 1909 | break; |
mbed_official | 0:51ac1d130fd4 | 1910 | |
mbed_official | 0:51ac1d130fd4 | 1911 | case ECHOREQ: |
mbed_official | 0:51ac1d130fd4 | 1912 | case ECHOREP: |
mbed_official | 0:51ac1d130fd4 | 1913 | case DISCREQ: |
mbed_official | 0:51ac1d130fd4 | 1914 | if (len >= 4) { |
mbed_official | 0:51ac1d130fd4 | 1915 | GETLONG(cilong, p); |
mbed_official | 0:51ac1d130fd4 | 1916 | printer(arg, " magic=0x%x", cilong); |
mbed_official | 0:51ac1d130fd4 | 1917 | p += 4; |
mbed_official | 0:51ac1d130fd4 | 1918 | len -= 4; |
mbed_official | 0:51ac1d130fd4 | 1919 | } |
mbed_official | 0:51ac1d130fd4 | 1920 | break; |
mbed_official | 0:51ac1d130fd4 | 1921 | } |
mbed_official | 0:51ac1d130fd4 | 1922 | |
mbed_official | 0:51ac1d130fd4 | 1923 | /* print the rest of the bytes in the packet */ |
mbed_official | 0:51ac1d130fd4 | 1924 | for (; len > 0; --len) { |
mbed_official | 0:51ac1d130fd4 | 1925 | GETCHAR(code, p); |
mbed_official | 0:51ac1d130fd4 | 1926 | printer(arg, " %.2x", code); |
mbed_official | 0:51ac1d130fd4 | 1927 | } |
mbed_official | 0:51ac1d130fd4 | 1928 | |
mbed_official | 0:51ac1d130fd4 | 1929 | return (int)(p - pstart); |
mbed_official | 0:51ac1d130fd4 | 1930 | } |
mbed_official | 0:51ac1d130fd4 | 1931 | #endif /* PPP_ADDITIONAL_CALLBACKS */ |
mbed_official | 0:51ac1d130fd4 | 1932 | |
mbed_official | 0:51ac1d130fd4 | 1933 | /* |
mbed_official | 0:51ac1d130fd4 | 1934 | * Time to shut down the link because there is nothing out there. |
mbed_official | 0:51ac1d130fd4 | 1935 | */ |
mbed_official | 0:51ac1d130fd4 | 1936 | static void |
mbed_official | 0:51ac1d130fd4 | 1937 | LcpLinkFailure (fsm *f) |
mbed_official | 0:51ac1d130fd4 | 1938 | { |
mbed_official | 0:51ac1d130fd4 | 1939 | if (f->state == LS_OPENED) { |
mbed_official | 0:51ac1d130fd4 | 1940 | LCPDEBUG(LOG_INFO, ("No response to %d echo-requests\n", lcp_echos_pending)); |
mbed_official | 0:51ac1d130fd4 | 1941 | LCPDEBUG(LOG_NOTICE, ("Serial link appears to be disconnected.\n")); |
mbed_official | 0:51ac1d130fd4 | 1942 | lcp_close(f->unit, "Peer not responding"); |
mbed_official | 0:51ac1d130fd4 | 1943 | } |
mbed_official | 0:51ac1d130fd4 | 1944 | } |
mbed_official | 0:51ac1d130fd4 | 1945 | |
mbed_official | 0:51ac1d130fd4 | 1946 | /* |
mbed_official | 0:51ac1d130fd4 | 1947 | * Timer expired for the LCP echo requests from this process. |
mbed_official | 0:51ac1d130fd4 | 1948 | */ |
mbed_official | 0:51ac1d130fd4 | 1949 | static void |
mbed_official | 0:51ac1d130fd4 | 1950 | LcpEchoCheck (fsm *f) |
mbed_official | 0:51ac1d130fd4 | 1951 | { |
mbed_official | 0:51ac1d130fd4 | 1952 | LcpSendEchoRequest (f); |
mbed_official | 0:51ac1d130fd4 | 1953 | |
mbed_official | 0:51ac1d130fd4 | 1954 | /* |
mbed_official | 0:51ac1d130fd4 | 1955 | * Start the timer for the next interval. |
mbed_official | 0:51ac1d130fd4 | 1956 | */ |
mbed_official | 0:51ac1d130fd4 | 1957 | LWIP_ASSERT("lcp_echo_timer_running == 0", lcp_echo_timer_running == 0); |
mbed_official | 0:51ac1d130fd4 | 1958 | |
mbed_official | 0:51ac1d130fd4 | 1959 | TIMEOUT (LcpEchoTimeout, f, lcp_echo_interval); |
mbed_official | 0:51ac1d130fd4 | 1960 | lcp_echo_timer_running = 1; |
mbed_official | 0:51ac1d130fd4 | 1961 | } |
mbed_official | 0:51ac1d130fd4 | 1962 | |
mbed_official | 0:51ac1d130fd4 | 1963 | /* |
mbed_official | 0:51ac1d130fd4 | 1964 | * LcpEchoTimeout - Timer expired on the LCP echo |
mbed_official | 0:51ac1d130fd4 | 1965 | */ |
mbed_official | 0:51ac1d130fd4 | 1966 | static void |
mbed_official | 0:51ac1d130fd4 | 1967 | LcpEchoTimeout (void *arg) |
mbed_official | 0:51ac1d130fd4 | 1968 | { |
mbed_official | 0:51ac1d130fd4 | 1969 | if (lcp_echo_timer_running != 0) { |
mbed_official | 0:51ac1d130fd4 | 1970 | lcp_echo_timer_running = 0; |
mbed_official | 0:51ac1d130fd4 | 1971 | LcpEchoCheck ((fsm *) arg); |
mbed_official | 0:51ac1d130fd4 | 1972 | } |
mbed_official | 0:51ac1d130fd4 | 1973 | } |
mbed_official | 0:51ac1d130fd4 | 1974 | |
mbed_official | 0:51ac1d130fd4 | 1975 | /* |
mbed_official | 0:51ac1d130fd4 | 1976 | * LcpEchoReply - LCP has received a reply to the echo |
mbed_official | 0:51ac1d130fd4 | 1977 | */ |
mbed_official | 0:51ac1d130fd4 | 1978 | static void |
mbed_official | 0:51ac1d130fd4 | 1979 | lcp_received_echo_reply (fsm *f, int id, u_char *inp, int len) |
mbed_official | 0:51ac1d130fd4 | 1980 | { |
mbed_official | 0:51ac1d130fd4 | 1981 | u32_t magic; |
mbed_official | 0:51ac1d130fd4 | 1982 | |
mbed_official | 0:51ac1d130fd4 | 1983 | LWIP_UNUSED_ARG(id); |
mbed_official | 0:51ac1d130fd4 | 1984 | |
mbed_official | 0:51ac1d130fd4 | 1985 | /* Check the magic number - don't count replies from ourselves. */ |
mbed_official | 0:51ac1d130fd4 | 1986 | if (len < 4) { |
mbed_official | 0:51ac1d130fd4 | 1987 | LCPDEBUG(LOG_WARNING, ("lcp: received short Echo-Reply, length %d\n", len)); |
mbed_official | 0:51ac1d130fd4 | 1988 | return; |
mbed_official | 0:51ac1d130fd4 | 1989 | } |
mbed_official | 0:51ac1d130fd4 | 1990 | GETLONG(magic, inp); |
mbed_official | 0:51ac1d130fd4 | 1991 | if (lcp_gotoptions[f->unit].neg_magicnumber && magic == lcp_gotoptions[f->unit].magicnumber) { |
mbed_official | 0:51ac1d130fd4 | 1992 | LCPDEBUG(LOG_WARNING, ("appear to have received our own echo-reply!\n")); |
mbed_official | 0:51ac1d130fd4 | 1993 | return; |
mbed_official | 0:51ac1d130fd4 | 1994 | } |
mbed_official | 0:51ac1d130fd4 | 1995 | |
mbed_official | 0:51ac1d130fd4 | 1996 | /* Reset the number of outstanding echo frames */ |
mbed_official | 0:51ac1d130fd4 | 1997 | lcp_echos_pending = 0; |
mbed_official | 0:51ac1d130fd4 | 1998 | } |
mbed_official | 0:51ac1d130fd4 | 1999 | |
mbed_official | 0:51ac1d130fd4 | 2000 | /* |
mbed_official | 0:51ac1d130fd4 | 2001 | * LcpSendEchoRequest - Send an echo request frame to the peer |
mbed_official | 0:51ac1d130fd4 | 2002 | */ |
mbed_official | 0:51ac1d130fd4 | 2003 | static void |
mbed_official | 0:51ac1d130fd4 | 2004 | LcpSendEchoRequest (fsm *f) |
mbed_official | 0:51ac1d130fd4 | 2005 | { |
mbed_official | 0:51ac1d130fd4 | 2006 | u32_t lcp_magic; |
mbed_official | 0:51ac1d130fd4 | 2007 | u_char pkt[4], *pktp; |
mbed_official | 0:51ac1d130fd4 | 2008 | |
mbed_official | 0:51ac1d130fd4 | 2009 | /* |
mbed_official | 0:51ac1d130fd4 | 2010 | * Detect the failure of the peer at this point. |
mbed_official | 0:51ac1d130fd4 | 2011 | */ |
mbed_official | 0:51ac1d130fd4 | 2012 | if (lcp_echo_fails != 0) { |
mbed_official | 0:51ac1d130fd4 | 2013 | if (lcp_echos_pending >= lcp_echo_fails) { |
mbed_official | 0:51ac1d130fd4 | 2014 | LcpLinkFailure(f); |
mbed_official | 0:51ac1d130fd4 | 2015 | lcp_echos_pending = 0; |
mbed_official | 0:51ac1d130fd4 | 2016 | } |
mbed_official | 0:51ac1d130fd4 | 2017 | } |
mbed_official | 0:51ac1d130fd4 | 2018 | |
mbed_official | 0:51ac1d130fd4 | 2019 | /* |
mbed_official | 0:51ac1d130fd4 | 2020 | * Make and send the echo request frame. |
mbed_official | 0:51ac1d130fd4 | 2021 | */ |
mbed_official | 0:51ac1d130fd4 | 2022 | if (f->state == LS_OPENED) { |
mbed_official | 0:51ac1d130fd4 | 2023 | lcp_magic = lcp_gotoptions[f->unit].magicnumber; |
mbed_official | 0:51ac1d130fd4 | 2024 | pktp = pkt; |
mbed_official | 0:51ac1d130fd4 | 2025 | PUTLONG(lcp_magic, pktp); |
mbed_official | 0:51ac1d130fd4 | 2026 | fsm_sdata(f, ECHOREQ, (u_char)(lcp_echo_number++ & 0xFF), pkt, (int)(pktp - pkt)); |
mbed_official | 0:51ac1d130fd4 | 2027 | ++lcp_echos_pending; |
mbed_official | 0:51ac1d130fd4 | 2028 | } |
mbed_official | 0:51ac1d130fd4 | 2029 | } |
mbed_official | 0:51ac1d130fd4 | 2030 | |
mbed_official | 0:51ac1d130fd4 | 2031 | /* |
mbed_official | 0:51ac1d130fd4 | 2032 | * lcp_echo_lowerup - Start the timer for the LCP frame |
mbed_official | 0:51ac1d130fd4 | 2033 | */ |
mbed_official | 0:51ac1d130fd4 | 2034 | |
mbed_official | 0:51ac1d130fd4 | 2035 | static void |
mbed_official | 0:51ac1d130fd4 | 2036 | lcp_echo_lowerup (int unit) |
mbed_official | 0:51ac1d130fd4 | 2037 | { |
mbed_official | 0:51ac1d130fd4 | 2038 | fsm *f = &lcp_fsm[unit]; |
mbed_official | 0:51ac1d130fd4 | 2039 | |
mbed_official | 0:51ac1d130fd4 | 2040 | /* Clear the parameters for generating echo frames */ |
mbed_official | 0:51ac1d130fd4 | 2041 | lcp_echos_pending = 0; |
mbed_official | 0:51ac1d130fd4 | 2042 | lcp_echo_number = 0; |
mbed_official | 0:51ac1d130fd4 | 2043 | lcp_echo_timer_running = 0; |
mbed_official | 0:51ac1d130fd4 | 2044 | |
mbed_official | 0:51ac1d130fd4 | 2045 | /* If a timeout interval is specified then start the timer */ |
mbed_official | 0:51ac1d130fd4 | 2046 | if (lcp_echo_interval != 0) { |
mbed_official | 0:51ac1d130fd4 | 2047 | LcpEchoCheck (f); |
mbed_official | 0:51ac1d130fd4 | 2048 | } |
mbed_official | 0:51ac1d130fd4 | 2049 | } |
mbed_official | 0:51ac1d130fd4 | 2050 | |
mbed_official | 0:51ac1d130fd4 | 2051 | /* |
mbed_official | 0:51ac1d130fd4 | 2052 | * lcp_echo_lowerdown - Stop the timer for the LCP frame |
mbed_official | 0:51ac1d130fd4 | 2053 | */ |
mbed_official | 0:51ac1d130fd4 | 2054 | |
mbed_official | 0:51ac1d130fd4 | 2055 | static void |
mbed_official | 0:51ac1d130fd4 | 2056 | lcp_echo_lowerdown (int unit) |
mbed_official | 0:51ac1d130fd4 | 2057 | { |
mbed_official | 0:51ac1d130fd4 | 2058 | fsm *f = &lcp_fsm[unit]; |
mbed_official | 0:51ac1d130fd4 | 2059 | |
mbed_official | 0:51ac1d130fd4 | 2060 | if (lcp_echo_timer_running != 0) { |
mbed_official | 0:51ac1d130fd4 | 2061 | UNTIMEOUT (LcpEchoTimeout, f); |
mbed_official | 0:51ac1d130fd4 | 2062 | lcp_echo_timer_running = 0; |
mbed_official | 0:51ac1d130fd4 | 2063 | } |
mbed_official | 0:51ac1d130fd4 | 2064 | } |
mbed_official | 0:51ac1d130fd4 | 2065 | |
mbed_official | 0:51ac1d130fd4 | 2066 | #endif /* PPP_SUPPORT */ |