Forked from STM32F7 internet for nucleo F746ZG
Dependents: Nucleo_F746ZG_Ethernet_MQTT_Ultrasound
Fork of F7_Ethernet by
lwip/netif/ppp/lcp.c@2:b4727195c450, 2016-10-24 (annotated)
- Committer:
- EmbeddedSam
- Date:
- Mon Oct 24 12:59:21 2016 +0000
- Revision:
- 2:b4727195c450
- Parent:
- 0:d26c1b55cfca
working with 1 ultrasound sensor approx 10hz update rate on mqtt
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
DieterGraef | 0:d26c1b55cfca | 1 | /***************************************************************************** |
DieterGraef | 0:d26c1b55cfca | 2 | * lcp.c - Network Link Control Protocol program file. |
DieterGraef | 0:d26c1b55cfca | 3 | * |
DieterGraef | 0:d26c1b55cfca | 4 | * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc. |
DieterGraef | 0:d26c1b55cfca | 5 | * portions Copyright (c) 1997 by Global Election Systems Inc. |
DieterGraef | 0:d26c1b55cfca | 6 | * |
DieterGraef | 0:d26c1b55cfca | 7 | * The authors hereby grant permission to use, copy, modify, distribute, |
DieterGraef | 0:d26c1b55cfca | 8 | * and license this software and its documentation for any purpose, provided |
DieterGraef | 0:d26c1b55cfca | 9 | * that existing copyright notices are retained in all copies and that this |
DieterGraef | 0:d26c1b55cfca | 10 | * notice and the following disclaimer are included verbatim in any |
DieterGraef | 0:d26c1b55cfca | 11 | * distributions. No written agreement, license, or royalty fee is required |
DieterGraef | 0:d26c1b55cfca | 12 | * for any of the authorized uses. |
DieterGraef | 0:d26c1b55cfca | 13 | * |
DieterGraef | 0:d26c1b55cfca | 14 | * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR |
DieterGraef | 0:d26c1b55cfca | 15 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
DieterGraef | 0:d26c1b55cfca | 16 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
DieterGraef | 0:d26c1b55cfca | 17 | * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
DieterGraef | 0:d26c1b55cfca | 18 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
DieterGraef | 0:d26c1b55cfca | 19 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
DieterGraef | 0:d26c1b55cfca | 20 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
DieterGraef | 0:d26c1b55cfca | 21 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
DieterGraef | 0:d26c1b55cfca | 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
DieterGraef | 0:d26c1b55cfca | 23 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
DieterGraef | 0:d26c1b55cfca | 24 | * |
DieterGraef | 0:d26c1b55cfca | 25 | ****************************************************************************** |
DieterGraef | 0:d26c1b55cfca | 26 | * REVISION HISTORY |
DieterGraef | 0:d26c1b55cfca | 27 | * |
DieterGraef | 0:d26c1b55cfca | 28 | * 03-01-01 Marc Boucher <marc@mbsi.ca> |
DieterGraef | 0:d26c1b55cfca | 29 | * Ported to lwIP. |
DieterGraef | 0:d26c1b55cfca | 30 | * 97-12-01 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc. |
DieterGraef | 0:d26c1b55cfca | 31 | * Original. |
DieterGraef | 0:d26c1b55cfca | 32 | *****************************************************************************/ |
DieterGraef | 0:d26c1b55cfca | 33 | |
DieterGraef | 0:d26c1b55cfca | 34 | /* |
DieterGraef | 0:d26c1b55cfca | 35 | * lcp.c - PPP Link Control Protocol. |
DieterGraef | 0:d26c1b55cfca | 36 | * |
DieterGraef | 0:d26c1b55cfca | 37 | * Copyright (c) 1989 Carnegie Mellon University. |
DieterGraef | 0:d26c1b55cfca | 38 | * All rights reserved. |
DieterGraef | 0:d26c1b55cfca | 39 | * |
DieterGraef | 0:d26c1b55cfca | 40 | * Redistribution and use in source and binary forms are permitted |
DieterGraef | 0:d26c1b55cfca | 41 | * provided that the above copyright notice and this paragraph are |
DieterGraef | 0:d26c1b55cfca | 42 | * duplicated in all such forms and that any documentation, |
DieterGraef | 0:d26c1b55cfca | 43 | * advertising materials, and other materials related to such |
DieterGraef | 0:d26c1b55cfca | 44 | * distribution and use acknowledge that the software was developed |
DieterGraef | 0:d26c1b55cfca | 45 | * by Carnegie Mellon University. The name of the |
DieterGraef | 0:d26c1b55cfca | 46 | * University may not be used to endorse or promote products derived |
DieterGraef | 0:d26c1b55cfca | 47 | * from this software without specific prior written permission. |
DieterGraef | 0:d26c1b55cfca | 48 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
DieterGraef | 0:d26c1b55cfca | 49 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
DieterGraef | 0:d26c1b55cfca | 50 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
DieterGraef | 0:d26c1b55cfca | 51 | */ |
DieterGraef | 0:d26c1b55cfca | 52 | |
DieterGraef | 0:d26c1b55cfca | 53 | |
DieterGraef | 0:d26c1b55cfca | 54 | #include "lwip/opt.h" |
DieterGraef | 0:d26c1b55cfca | 55 | |
DieterGraef | 0:d26c1b55cfca | 56 | #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */ |
DieterGraef | 0:d26c1b55cfca | 57 | |
DieterGraef | 0:d26c1b55cfca | 58 | #include "ppp_impl.h" |
DieterGraef | 0:d26c1b55cfca | 59 | #include "pppdebug.h" |
DieterGraef | 0:d26c1b55cfca | 60 | |
DieterGraef | 0:d26c1b55cfca | 61 | #include "fsm.h" |
DieterGraef | 0:d26c1b55cfca | 62 | #include "chap.h" |
DieterGraef | 0:d26c1b55cfca | 63 | #include "magic.h" |
DieterGraef | 0:d26c1b55cfca | 64 | #include "auth.h" |
DieterGraef | 0:d26c1b55cfca | 65 | #include "lcp.h" |
DieterGraef | 0:d26c1b55cfca | 66 | |
DieterGraef | 0:d26c1b55cfca | 67 | #include <string.h> |
DieterGraef | 0:d26c1b55cfca | 68 | |
DieterGraef | 0:d26c1b55cfca | 69 | #if PPPOE_SUPPORT |
DieterGraef | 0:d26c1b55cfca | 70 | #include "netif/ppp_oe.h" |
DieterGraef | 0:d26c1b55cfca | 71 | #else |
DieterGraef | 0:d26c1b55cfca | 72 | #define PPPOE_MAXMTU PPP_MAXMRU |
DieterGraef | 0:d26c1b55cfca | 73 | #endif |
DieterGraef | 0:d26c1b55cfca | 74 | |
DieterGraef | 0:d26c1b55cfca | 75 | #if 0 /* UNUSED */ |
DieterGraef | 0:d26c1b55cfca | 76 | /* |
DieterGraef | 0:d26c1b55cfca | 77 | * LCP-related command-line options. |
DieterGraef | 0:d26c1b55cfca | 78 | */ |
DieterGraef | 0:d26c1b55cfca | 79 | int lcp_echo_interval = 0; /* Interval between LCP echo-requests */ |
DieterGraef | 0:d26c1b55cfca | 80 | int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */ |
DieterGraef | 0:d26c1b55cfca | 81 | bool lax_recv = 0; /* accept control chars in asyncmap */ |
DieterGraef | 0:d26c1b55cfca | 82 | |
DieterGraef | 0:d26c1b55cfca | 83 | static int setescape (char **); |
DieterGraef | 0:d26c1b55cfca | 84 | |
DieterGraef | 0:d26c1b55cfca | 85 | static option_t lcp_option_list[] = { |
DieterGraef | 0:d26c1b55cfca | 86 | /* LCP options */ |
DieterGraef | 0:d26c1b55cfca | 87 | /* list stripped for simplicity */ |
DieterGraef | 0:d26c1b55cfca | 88 | {NULL} |
DieterGraef | 0:d26c1b55cfca | 89 | }; |
DieterGraef | 0:d26c1b55cfca | 90 | #endif /* UNUSED */ |
DieterGraef | 0:d26c1b55cfca | 91 | |
DieterGraef | 0:d26c1b55cfca | 92 | /* options */ |
DieterGraef | 0:d26c1b55cfca | 93 | LinkPhase lcp_phase[NUM_PPP]; /* Phase of link session (RFC 1661) */ |
DieterGraef | 0:d26c1b55cfca | 94 | static u_int lcp_echo_interval = LCP_ECHOINTERVAL; /* Interval between LCP echo-requests */ |
DieterGraef | 0:d26c1b55cfca | 95 | static u_int lcp_echo_fails = LCP_MAXECHOFAILS; /* Tolerance to unanswered echo-requests */ |
DieterGraef | 0:d26c1b55cfca | 96 | |
DieterGraef | 0:d26c1b55cfca | 97 | /* global vars */ |
DieterGraef | 0:d26c1b55cfca | 98 | static fsm lcp_fsm[NUM_PPP]; /* LCP fsm structure (global)*/ |
DieterGraef | 0:d26c1b55cfca | 99 | lcp_options lcp_wantoptions[NUM_PPP]; /* Options that we want to request */ |
DieterGraef | 0:d26c1b55cfca | 100 | lcp_options lcp_gotoptions[NUM_PPP]; /* Options that peer ack'd */ |
DieterGraef | 0:d26c1b55cfca | 101 | lcp_options lcp_allowoptions[NUM_PPP]; /* Options we allow peer to request */ |
DieterGraef | 0:d26c1b55cfca | 102 | lcp_options lcp_hisoptions[NUM_PPP]; /* Options that we ack'd */ |
DieterGraef | 0:d26c1b55cfca | 103 | ext_accm xmit_accm[NUM_PPP]; /* extended transmit ACCM */ |
DieterGraef | 0:d26c1b55cfca | 104 | |
DieterGraef | 0:d26c1b55cfca | 105 | static u32_t lcp_echos_pending = 0; /* Number of outstanding echo msgs */ |
DieterGraef | 0:d26c1b55cfca | 106 | static u32_t lcp_echo_number = 0; /* ID number of next echo frame */ |
DieterGraef | 0:d26c1b55cfca | 107 | static u32_t lcp_echo_timer_running = 0; /* TRUE if a timer is running */ |
DieterGraef | 0:d26c1b55cfca | 108 | |
DieterGraef | 0:d26c1b55cfca | 109 | /* @todo: do we really need such a large buffer? The typical 1500 bytes seem too much. */ |
DieterGraef | 0:d26c1b55cfca | 110 | static u_char nak_buffer[PPP_MRU]; /* where we construct a nak packet */ |
DieterGraef | 0:d26c1b55cfca | 111 | |
DieterGraef | 0:d26c1b55cfca | 112 | /* |
DieterGraef | 0:d26c1b55cfca | 113 | * Callbacks for fsm code. (CI = Configuration Information) |
DieterGraef | 0:d26c1b55cfca | 114 | */ |
DieterGraef | 0:d26c1b55cfca | 115 | static void lcp_resetci (fsm*); /* Reset our CI */ |
DieterGraef | 0:d26c1b55cfca | 116 | static int lcp_cilen (fsm*); /* Return length of our CI */ |
DieterGraef | 0:d26c1b55cfca | 117 | static void lcp_addci (fsm*, u_char*, int*); /* Add our CI to pkt */ |
DieterGraef | 0:d26c1b55cfca | 118 | static int lcp_ackci (fsm*, u_char*, int); /* Peer ack'd our CI */ |
DieterGraef | 0:d26c1b55cfca | 119 | static int lcp_nakci (fsm*, u_char*, int); /* Peer nak'd our CI */ |
DieterGraef | 0:d26c1b55cfca | 120 | static int lcp_rejci (fsm*, u_char*, int); /* Peer rej'd our CI */ |
DieterGraef | 0:d26c1b55cfca | 121 | static int lcp_reqci (fsm*, u_char*, int*, int); /* Rcv peer CI */ |
DieterGraef | 0:d26c1b55cfca | 122 | static void lcp_up (fsm*); /* We're UP */ |
DieterGraef | 0:d26c1b55cfca | 123 | static void lcp_down (fsm*); /* We're DOWN */ |
DieterGraef | 0:d26c1b55cfca | 124 | static void lcp_starting (fsm*); /* We need lower layer up */ |
DieterGraef | 0:d26c1b55cfca | 125 | static void lcp_finished (fsm*); /* We need lower layer down */ |
DieterGraef | 0:d26c1b55cfca | 126 | static int lcp_extcode (fsm*, int, u_char, u_char*, int); |
DieterGraef | 0:d26c1b55cfca | 127 | static void lcp_rprotrej (fsm*, u_char*, int); |
DieterGraef | 0:d26c1b55cfca | 128 | |
DieterGraef | 0:d26c1b55cfca | 129 | /* |
DieterGraef | 0:d26c1b55cfca | 130 | * routines to send LCP echos to peer |
DieterGraef | 0:d26c1b55cfca | 131 | */ |
DieterGraef | 0:d26c1b55cfca | 132 | |
DieterGraef | 0:d26c1b55cfca | 133 | static void lcp_echo_lowerup (int); |
DieterGraef | 0:d26c1b55cfca | 134 | static void lcp_echo_lowerdown (int); |
DieterGraef | 0:d26c1b55cfca | 135 | static void LcpEchoTimeout (void*); |
DieterGraef | 0:d26c1b55cfca | 136 | static void lcp_received_echo_reply (fsm*, int, u_char*, int); |
DieterGraef | 0:d26c1b55cfca | 137 | static void LcpSendEchoRequest (fsm*); |
DieterGraef | 0:d26c1b55cfca | 138 | static void LcpLinkFailure (fsm*); |
DieterGraef | 0:d26c1b55cfca | 139 | static void LcpEchoCheck (fsm*); |
DieterGraef | 0:d26c1b55cfca | 140 | |
DieterGraef | 0:d26c1b55cfca | 141 | static fsm_callbacks lcp_callbacks = { /* LCP callback routines */ |
DieterGraef | 0:d26c1b55cfca | 142 | lcp_resetci, /* Reset our Configuration Information */ |
DieterGraef | 0:d26c1b55cfca | 143 | lcp_cilen, /* Length of our Configuration Information */ |
DieterGraef | 0:d26c1b55cfca | 144 | lcp_addci, /* Add our Configuration Information */ |
DieterGraef | 0:d26c1b55cfca | 145 | lcp_ackci, /* ACK our Configuration Information */ |
DieterGraef | 0:d26c1b55cfca | 146 | lcp_nakci, /* NAK our Configuration Information */ |
DieterGraef | 0:d26c1b55cfca | 147 | lcp_rejci, /* Reject our Configuration Information */ |
DieterGraef | 0:d26c1b55cfca | 148 | lcp_reqci, /* Request peer's Configuration Information */ |
DieterGraef | 0:d26c1b55cfca | 149 | lcp_up, /* Called when fsm reaches LS_OPENED state */ |
DieterGraef | 0:d26c1b55cfca | 150 | lcp_down, /* Called when fsm leaves LS_OPENED state */ |
DieterGraef | 0:d26c1b55cfca | 151 | lcp_starting, /* Called when we want the lower layer up */ |
DieterGraef | 0:d26c1b55cfca | 152 | lcp_finished, /* Called when we want the lower layer down */ |
DieterGraef | 0:d26c1b55cfca | 153 | NULL, /* Called when Protocol-Reject received */ |
DieterGraef | 0:d26c1b55cfca | 154 | NULL, /* Retransmission is necessary */ |
DieterGraef | 0:d26c1b55cfca | 155 | lcp_extcode, /* Called to handle LCP-specific codes */ |
DieterGraef | 0:d26c1b55cfca | 156 | "LCP" /* String name of protocol */ |
DieterGraef | 0:d26c1b55cfca | 157 | }; |
DieterGraef | 0:d26c1b55cfca | 158 | |
DieterGraef | 0:d26c1b55cfca | 159 | /* |
DieterGraef | 0:d26c1b55cfca | 160 | * Protocol entry points. |
DieterGraef | 0:d26c1b55cfca | 161 | * Some of these are called directly. |
DieterGraef | 0:d26c1b55cfca | 162 | */ |
DieterGraef | 0:d26c1b55cfca | 163 | |
DieterGraef | 0:d26c1b55cfca | 164 | static void lcp_input (int, u_char *, int); |
DieterGraef | 0:d26c1b55cfca | 165 | static void lcp_protrej (int); |
DieterGraef | 0:d26c1b55cfca | 166 | |
DieterGraef | 0:d26c1b55cfca | 167 | struct protent lcp_protent = { |
DieterGraef | 0:d26c1b55cfca | 168 | PPP_LCP, |
DieterGraef | 0:d26c1b55cfca | 169 | lcp_init, |
DieterGraef | 0:d26c1b55cfca | 170 | lcp_input, |
DieterGraef | 0:d26c1b55cfca | 171 | lcp_protrej, |
DieterGraef | 0:d26c1b55cfca | 172 | lcp_lowerup, |
DieterGraef | 0:d26c1b55cfca | 173 | lcp_lowerdown, |
DieterGraef | 0:d26c1b55cfca | 174 | lcp_open, |
DieterGraef | 0:d26c1b55cfca | 175 | lcp_close, |
DieterGraef | 0:d26c1b55cfca | 176 | #if PPP_ADDITIONAL_CALLBACKS |
DieterGraef | 0:d26c1b55cfca | 177 | lcp_printpkt, |
DieterGraef | 0:d26c1b55cfca | 178 | NULL, |
DieterGraef | 0:d26c1b55cfca | 179 | #endif /* PPP_ADDITIONAL_CALLBACKS */ |
DieterGraef | 0:d26c1b55cfca | 180 | 1, |
DieterGraef | 0:d26c1b55cfca | 181 | "LCP", |
DieterGraef | 0:d26c1b55cfca | 182 | #if PPP_ADDITIONAL_CALLBACKS |
DieterGraef | 0:d26c1b55cfca | 183 | NULL, |
DieterGraef | 0:d26c1b55cfca | 184 | NULL, |
DieterGraef | 0:d26c1b55cfca | 185 | NULL |
DieterGraef | 0:d26c1b55cfca | 186 | #endif /* PPP_ADDITIONAL_CALLBACKS */ |
DieterGraef | 0:d26c1b55cfca | 187 | }; |
DieterGraef | 0:d26c1b55cfca | 188 | |
DieterGraef | 0:d26c1b55cfca | 189 | int lcp_loopbackfail = DEFLOOPBACKFAIL; |
DieterGraef | 0:d26c1b55cfca | 190 | |
DieterGraef | 0:d26c1b55cfca | 191 | /* |
DieterGraef | 0:d26c1b55cfca | 192 | * Length of each type of configuration option (in octets) |
DieterGraef | 0:d26c1b55cfca | 193 | */ |
DieterGraef | 0:d26c1b55cfca | 194 | #define CILEN_VOID 2 |
DieterGraef | 0:d26c1b55cfca | 195 | #define CILEN_CHAR 3 |
DieterGraef | 0:d26c1b55cfca | 196 | #define CILEN_SHORT 4 /* CILEN_VOID + sizeof(short) */ |
DieterGraef | 0:d26c1b55cfca | 197 | #define CILEN_CHAP 5 /* CILEN_VOID + sizeof(short) + 1 */ |
DieterGraef | 0:d26c1b55cfca | 198 | #define CILEN_LONG 6 /* CILEN_VOID + sizeof(long) */ |
DieterGraef | 0:d26c1b55cfca | 199 | #define CILEN_LQR 8 /* CILEN_VOID + sizeof(short) + sizeof(long) */ |
DieterGraef | 0:d26c1b55cfca | 200 | #define CILEN_CBCP 3 |
DieterGraef | 0:d26c1b55cfca | 201 | |
DieterGraef | 0:d26c1b55cfca | 202 | #define CODENAME(x) ((x) == CONFACK ? "ACK" : (x) == CONFNAK ? "NAK" : "REJ") |
DieterGraef | 0:d26c1b55cfca | 203 | |
DieterGraef | 0:d26c1b55cfca | 204 | #if 0 /* UNUSED */ |
DieterGraef | 0:d26c1b55cfca | 205 | /* |
DieterGraef | 0:d26c1b55cfca | 206 | * setescape - add chars to the set we escape on transmission. |
DieterGraef | 0:d26c1b55cfca | 207 | */ |
DieterGraef | 0:d26c1b55cfca | 208 | static int |
DieterGraef | 0:d26c1b55cfca | 209 | setescape(argv) |
DieterGraef | 0:d26c1b55cfca | 210 | char **argv; |
DieterGraef | 0:d26c1b55cfca | 211 | { |
DieterGraef | 0:d26c1b55cfca | 212 | int n, ret; |
DieterGraef | 0:d26c1b55cfca | 213 | char *p, *endp; |
DieterGraef | 0:d26c1b55cfca | 214 | |
DieterGraef | 0:d26c1b55cfca | 215 | p = *argv; |
DieterGraef | 0:d26c1b55cfca | 216 | ret = 1; |
DieterGraef | 0:d26c1b55cfca | 217 | while (*p) { |
DieterGraef | 0:d26c1b55cfca | 218 | n = strtol(p, &endp, 16); |
DieterGraef | 0:d26c1b55cfca | 219 | if (p == endp) { |
DieterGraef | 0:d26c1b55cfca | 220 | option_error("escape parameter contains invalid hex number '%s'", p); |
DieterGraef | 0:d26c1b55cfca | 221 | return 0; |
DieterGraef | 0:d26c1b55cfca | 222 | } |
DieterGraef | 0:d26c1b55cfca | 223 | p = endp; |
DieterGraef | 0:d26c1b55cfca | 224 | if (n < 0 || n == 0x5E || n > 0xFF) { |
DieterGraef | 0:d26c1b55cfca | 225 | option_error("can't escape character 0x%x", n); |
DieterGraef | 0:d26c1b55cfca | 226 | ret = 0; |
DieterGraef | 0:d26c1b55cfca | 227 | } else |
DieterGraef | 0:d26c1b55cfca | 228 | xmit_accm[0][n >> 5] |= 1 << (n & 0x1F); |
DieterGraef | 0:d26c1b55cfca | 229 | while (*p == ',' || *p == ' ') |
DieterGraef | 0:d26c1b55cfca | 230 | ++p; |
DieterGraef | 0:d26c1b55cfca | 231 | } |
DieterGraef | 0:d26c1b55cfca | 232 | return ret; |
DieterGraef | 0:d26c1b55cfca | 233 | } |
DieterGraef | 0:d26c1b55cfca | 234 | #endif /* UNUSED */ |
DieterGraef | 0:d26c1b55cfca | 235 | |
DieterGraef | 0:d26c1b55cfca | 236 | /* |
DieterGraef | 0:d26c1b55cfca | 237 | * lcp_init - Initialize LCP. |
DieterGraef | 0:d26c1b55cfca | 238 | */ |
DieterGraef | 0:d26c1b55cfca | 239 | void |
DieterGraef | 0:d26c1b55cfca | 240 | lcp_init(int unit) |
DieterGraef | 0:d26c1b55cfca | 241 | { |
DieterGraef | 0:d26c1b55cfca | 242 | fsm *f = &lcp_fsm[unit]; |
DieterGraef | 0:d26c1b55cfca | 243 | lcp_options *wo = &lcp_wantoptions[unit]; |
DieterGraef | 0:d26c1b55cfca | 244 | lcp_options *ao = &lcp_allowoptions[unit]; |
DieterGraef | 0:d26c1b55cfca | 245 | |
DieterGraef | 0:d26c1b55cfca | 246 | f->unit = unit; |
DieterGraef | 0:d26c1b55cfca | 247 | f->protocol = PPP_LCP; |
DieterGraef | 0:d26c1b55cfca | 248 | f->callbacks = &lcp_callbacks; |
DieterGraef | 0:d26c1b55cfca | 249 | |
DieterGraef | 0:d26c1b55cfca | 250 | fsm_init(f); |
DieterGraef | 0:d26c1b55cfca | 251 | |
DieterGraef | 0:d26c1b55cfca | 252 | wo->passive = 0; |
DieterGraef | 0:d26c1b55cfca | 253 | wo->silent = 0; |
DieterGraef | 0:d26c1b55cfca | 254 | wo->restart = 0; /* Set to 1 in kernels or multi-line implementations */ |
DieterGraef | 0:d26c1b55cfca | 255 | wo->neg_mru = 1; |
DieterGraef | 0:d26c1b55cfca | 256 | wo->mru = PPP_DEFMRU; |
DieterGraef | 0:d26c1b55cfca | 257 | wo->neg_asyncmap = 1; |
DieterGraef | 0:d26c1b55cfca | 258 | wo->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */ |
DieterGraef | 0:d26c1b55cfca | 259 | wo->neg_chap = 0; /* Set to 1 on server */ |
DieterGraef | 0:d26c1b55cfca | 260 | wo->neg_upap = 0; /* Set to 1 on server */ |
DieterGraef | 0:d26c1b55cfca | 261 | wo->chap_mdtype = CHAP_DIGEST_MD5; |
DieterGraef | 0:d26c1b55cfca | 262 | wo->neg_magicnumber = 1; |
DieterGraef | 0:d26c1b55cfca | 263 | wo->neg_pcompression = 1; |
DieterGraef | 0:d26c1b55cfca | 264 | wo->neg_accompression = 1; |
DieterGraef | 0:d26c1b55cfca | 265 | wo->neg_lqr = 0; /* no LQR implementation yet */ |
DieterGraef | 0:d26c1b55cfca | 266 | wo->neg_cbcp = 0; |
DieterGraef | 0:d26c1b55cfca | 267 | |
DieterGraef | 0:d26c1b55cfca | 268 | ao->neg_mru = 1; |
DieterGraef | 0:d26c1b55cfca | 269 | ao->mru = PPP_MAXMRU; |
DieterGraef | 0:d26c1b55cfca | 270 | ao->neg_asyncmap = 1; |
DieterGraef | 0:d26c1b55cfca | 271 | ao->asyncmap = 0x00000000l; /* Assume don't need to escape any ctl chars. */ |
DieterGraef | 0:d26c1b55cfca | 272 | ao->neg_chap = (CHAP_SUPPORT != 0); |
DieterGraef | 0:d26c1b55cfca | 273 | ao->chap_mdtype = CHAP_DIGEST_MD5; |
DieterGraef | 0:d26c1b55cfca | 274 | ao->neg_upap = (PAP_SUPPORT != 0); |
DieterGraef | 0:d26c1b55cfca | 275 | ao->neg_magicnumber = 1; |
DieterGraef | 0:d26c1b55cfca | 276 | ao->neg_pcompression = 1; |
DieterGraef | 0:d26c1b55cfca | 277 | ao->neg_accompression = 1; |
DieterGraef | 0:d26c1b55cfca | 278 | ao->neg_lqr = 0; /* no LQR implementation yet */ |
DieterGraef | 0:d26c1b55cfca | 279 | ao->neg_cbcp = (CBCP_SUPPORT != 0); |
DieterGraef | 0:d26c1b55cfca | 280 | |
DieterGraef | 0:d26c1b55cfca | 281 | /* |
DieterGraef | 0:d26c1b55cfca | 282 | * Set transmit escape for the flag and escape characters plus anything |
DieterGraef | 0:d26c1b55cfca | 283 | * set for the allowable options. |
DieterGraef | 0:d26c1b55cfca | 284 | */ |
DieterGraef | 0:d26c1b55cfca | 285 | memset(xmit_accm[unit], 0, sizeof(xmit_accm[0])); |
DieterGraef | 0:d26c1b55cfca | 286 | xmit_accm[unit][15] = 0x60; |
DieterGraef | 0:d26c1b55cfca | 287 | xmit_accm[unit][0] = (u_char)((ao->asyncmap & 0xFF)); |
DieterGraef | 0:d26c1b55cfca | 288 | xmit_accm[unit][1] = (u_char)((ao->asyncmap >> 8) & 0xFF); |
DieterGraef | 0:d26c1b55cfca | 289 | xmit_accm[unit][2] = (u_char)((ao->asyncmap >> 16) & 0xFF); |
DieterGraef | 0:d26c1b55cfca | 290 | xmit_accm[unit][3] = (u_char)((ao->asyncmap >> 24) & 0xFF); |
DieterGraef | 0:d26c1b55cfca | 291 | LCPDEBUG(LOG_INFO, ("lcp_init: xmit_accm=%X %X %X %X\n", |
DieterGraef | 0:d26c1b55cfca | 292 | xmit_accm[unit][0], |
DieterGraef | 0:d26c1b55cfca | 293 | xmit_accm[unit][1], |
DieterGraef | 0:d26c1b55cfca | 294 | xmit_accm[unit][2], |
DieterGraef | 0:d26c1b55cfca | 295 | xmit_accm[unit][3])); |
DieterGraef | 0:d26c1b55cfca | 296 | |
DieterGraef | 0:d26c1b55cfca | 297 | lcp_phase[unit] = PHASE_INITIALIZE; |
DieterGraef | 0:d26c1b55cfca | 298 | } |
DieterGraef | 0:d26c1b55cfca | 299 | |
DieterGraef | 0:d26c1b55cfca | 300 | |
DieterGraef | 0:d26c1b55cfca | 301 | /* |
DieterGraef | 0:d26c1b55cfca | 302 | * lcp_open - LCP is allowed to come up. |
DieterGraef | 0:d26c1b55cfca | 303 | */ |
DieterGraef | 0:d26c1b55cfca | 304 | void |
DieterGraef | 0:d26c1b55cfca | 305 | lcp_open(int unit) |
DieterGraef | 0:d26c1b55cfca | 306 | { |
DieterGraef | 0:d26c1b55cfca | 307 | fsm *f = &lcp_fsm[unit]; |
DieterGraef | 0:d26c1b55cfca | 308 | lcp_options *wo = &lcp_wantoptions[unit]; |
DieterGraef | 0:d26c1b55cfca | 309 | |
DieterGraef | 0:d26c1b55cfca | 310 | f->flags = 0; |
DieterGraef | 0:d26c1b55cfca | 311 | if (wo->passive) { |
DieterGraef | 0:d26c1b55cfca | 312 | f->flags |= OPT_PASSIVE; |
DieterGraef | 0:d26c1b55cfca | 313 | } |
DieterGraef | 0:d26c1b55cfca | 314 | if (wo->silent) { |
DieterGraef | 0:d26c1b55cfca | 315 | f->flags |= OPT_SILENT; |
DieterGraef | 0:d26c1b55cfca | 316 | } |
DieterGraef | 0:d26c1b55cfca | 317 | fsm_open(f); |
DieterGraef | 0:d26c1b55cfca | 318 | |
DieterGraef | 0:d26c1b55cfca | 319 | lcp_phase[unit] = PHASE_ESTABLISH; |
DieterGraef | 0:d26c1b55cfca | 320 | } |
DieterGraef | 0:d26c1b55cfca | 321 | |
DieterGraef | 0:d26c1b55cfca | 322 | |
DieterGraef | 0:d26c1b55cfca | 323 | /* |
DieterGraef | 0:d26c1b55cfca | 324 | * lcp_close - Take LCP down. |
DieterGraef | 0:d26c1b55cfca | 325 | */ |
DieterGraef | 0:d26c1b55cfca | 326 | void |
DieterGraef | 0:d26c1b55cfca | 327 | lcp_close(int unit, char *reason) |
DieterGraef | 0:d26c1b55cfca | 328 | { |
DieterGraef | 0:d26c1b55cfca | 329 | fsm *f = &lcp_fsm[unit]; |
DieterGraef | 0:d26c1b55cfca | 330 | |
DieterGraef | 0:d26c1b55cfca | 331 | if (lcp_phase[unit] != PHASE_DEAD) { |
DieterGraef | 0:d26c1b55cfca | 332 | lcp_phase[unit] = PHASE_TERMINATE; |
DieterGraef | 0:d26c1b55cfca | 333 | } |
DieterGraef | 0:d26c1b55cfca | 334 | if (f->state == LS_STOPPED && f->flags & (OPT_PASSIVE|OPT_SILENT)) { |
DieterGraef | 0:d26c1b55cfca | 335 | /* |
DieterGraef | 0:d26c1b55cfca | 336 | * This action is not strictly according to the FSM in RFC1548, |
DieterGraef | 0:d26c1b55cfca | 337 | * but it does mean that the program terminates if you do an |
DieterGraef | 0:d26c1b55cfca | 338 | * lcp_close() in passive/silent mode when a connection hasn't |
DieterGraef | 0:d26c1b55cfca | 339 | * been established. |
DieterGraef | 0:d26c1b55cfca | 340 | */ |
DieterGraef | 0:d26c1b55cfca | 341 | f->state = LS_CLOSED; |
DieterGraef | 0:d26c1b55cfca | 342 | lcp_finished(f); |
DieterGraef | 0:d26c1b55cfca | 343 | } else { |
DieterGraef | 0:d26c1b55cfca | 344 | fsm_close(f, reason); |
DieterGraef | 0:d26c1b55cfca | 345 | } |
DieterGraef | 0:d26c1b55cfca | 346 | } |
DieterGraef | 0:d26c1b55cfca | 347 | |
DieterGraef | 0:d26c1b55cfca | 348 | |
DieterGraef | 0:d26c1b55cfca | 349 | /* |
DieterGraef | 0:d26c1b55cfca | 350 | * lcp_lowerup - The lower layer is up. |
DieterGraef | 0:d26c1b55cfca | 351 | */ |
DieterGraef | 0:d26c1b55cfca | 352 | void |
DieterGraef | 0:d26c1b55cfca | 353 | lcp_lowerup(int unit) |
DieterGraef | 0:d26c1b55cfca | 354 | { |
DieterGraef | 0:d26c1b55cfca | 355 | lcp_options *wo = &lcp_wantoptions[unit]; |
DieterGraef | 0:d26c1b55cfca | 356 | |
DieterGraef | 0:d26c1b55cfca | 357 | /* |
DieterGraef | 0:d26c1b55cfca | 358 | * Don't use A/C or protocol compression on transmission, |
DieterGraef | 0:d26c1b55cfca | 359 | * but accept A/C and protocol compressed packets |
DieterGraef | 0:d26c1b55cfca | 360 | * if we are going to ask for A/C and protocol compression. |
DieterGraef | 0:d26c1b55cfca | 361 | */ |
DieterGraef | 0:d26c1b55cfca | 362 | ppp_set_xaccm(unit, &xmit_accm[unit]); |
DieterGraef | 0:d26c1b55cfca | 363 | ppp_send_config(unit, PPP_MRU, 0xffffffffl, 0, 0); |
DieterGraef | 0:d26c1b55cfca | 364 | ppp_recv_config(unit, PPP_MRU, 0x00000000l, |
DieterGraef | 0:d26c1b55cfca | 365 | wo->neg_pcompression, wo->neg_accompression); |
DieterGraef | 0:d26c1b55cfca | 366 | peer_mru[unit] = PPP_MRU; |
DieterGraef | 0:d26c1b55cfca | 367 | lcp_allowoptions[unit].asyncmap = (u_long)xmit_accm[unit][0] |
DieterGraef | 0:d26c1b55cfca | 368 | | ((u_long)xmit_accm[unit][1] << 8) |
DieterGraef | 0:d26c1b55cfca | 369 | | ((u_long)xmit_accm[unit][2] << 16) |
DieterGraef | 0:d26c1b55cfca | 370 | | ((u_long)xmit_accm[unit][3] << 24); |
DieterGraef | 0:d26c1b55cfca | 371 | LCPDEBUG(LOG_INFO, ("lcp_lowerup: asyncmap=%X %X %X %X\n", |
DieterGraef | 0:d26c1b55cfca | 372 | xmit_accm[unit][3], |
DieterGraef | 0:d26c1b55cfca | 373 | xmit_accm[unit][2], |
DieterGraef | 0:d26c1b55cfca | 374 | xmit_accm[unit][1], |
DieterGraef | 0:d26c1b55cfca | 375 | xmit_accm[unit][0])); |
DieterGraef | 0:d26c1b55cfca | 376 | |
DieterGraef | 0:d26c1b55cfca | 377 | fsm_lowerup(&lcp_fsm[unit]); |
DieterGraef | 0:d26c1b55cfca | 378 | } |
DieterGraef | 0:d26c1b55cfca | 379 | |
DieterGraef | 0:d26c1b55cfca | 380 | |
DieterGraef | 0:d26c1b55cfca | 381 | /* |
DieterGraef | 0:d26c1b55cfca | 382 | * lcp_lowerdown - The lower layer is down. |
DieterGraef | 0:d26c1b55cfca | 383 | */ |
DieterGraef | 0:d26c1b55cfca | 384 | void |
DieterGraef | 0:d26c1b55cfca | 385 | lcp_lowerdown(int unit) |
DieterGraef | 0:d26c1b55cfca | 386 | { |
DieterGraef | 0:d26c1b55cfca | 387 | fsm_lowerdown(&lcp_fsm[unit]); |
DieterGraef | 0:d26c1b55cfca | 388 | } |
DieterGraef | 0:d26c1b55cfca | 389 | |
DieterGraef | 0:d26c1b55cfca | 390 | |
DieterGraef | 0:d26c1b55cfca | 391 | /* |
DieterGraef | 0:d26c1b55cfca | 392 | * lcp_input - Input LCP packet. |
DieterGraef | 0:d26c1b55cfca | 393 | */ |
DieterGraef | 0:d26c1b55cfca | 394 | static void |
DieterGraef | 0:d26c1b55cfca | 395 | lcp_input(int unit, u_char *p, int len) |
DieterGraef | 0:d26c1b55cfca | 396 | { |
DieterGraef | 0:d26c1b55cfca | 397 | fsm *f = &lcp_fsm[unit]; |
DieterGraef | 0:d26c1b55cfca | 398 | |
DieterGraef | 0:d26c1b55cfca | 399 | fsm_input(f, p, len); |
DieterGraef | 0:d26c1b55cfca | 400 | } |
DieterGraef | 0:d26c1b55cfca | 401 | |
DieterGraef | 0:d26c1b55cfca | 402 | |
DieterGraef | 0:d26c1b55cfca | 403 | /* |
DieterGraef | 0:d26c1b55cfca | 404 | * lcp_extcode - Handle a LCP-specific code. |
DieterGraef | 0:d26c1b55cfca | 405 | */ |
DieterGraef | 0:d26c1b55cfca | 406 | static int |
DieterGraef | 0:d26c1b55cfca | 407 | lcp_extcode(fsm *f, int code, u_char id, u_char *inp, int len) |
DieterGraef | 0:d26c1b55cfca | 408 | { |
DieterGraef | 0:d26c1b55cfca | 409 | u_char *magp; |
DieterGraef | 0:d26c1b55cfca | 410 | |
DieterGraef | 0:d26c1b55cfca | 411 | switch( code ){ |
DieterGraef | 0:d26c1b55cfca | 412 | case PROTREJ: |
DieterGraef | 0:d26c1b55cfca | 413 | lcp_rprotrej(f, inp, len); |
DieterGraef | 0:d26c1b55cfca | 414 | break; |
DieterGraef | 0:d26c1b55cfca | 415 | |
DieterGraef | 0:d26c1b55cfca | 416 | case ECHOREQ: |
DieterGraef | 0:d26c1b55cfca | 417 | if (f->state != LS_OPENED) { |
DieterGraef | 0:d26c1b55cfca | 418 | break; |
DieterGraef | 0:d26c1b55cfca | 419 | } |
DieterGraef | 0:d26c1b55cfca | 420 | LCPDEBUG(LOG_INFO, ("lcp: Echo-Request, Rcvd id %d\n", id)); |
DieterGraef | 0:d26c1b55cfca | 421 | magp = inp; |
DieterGraef | 0:d26c1b55cfca | 422 | PUTLONG(lcp_gotoptions[f->unit].magicnumber, magp); |
DieterGraef | 0:d26c1b55cfca | 423 | fsm_sdata(f, ECHOREP, id, inp, len); |
DieterGraef | 0:d26c1b55cfca | 424 | break; |
DieterGraef | 0:d26c1b55cfca | 425 | |
DieterGraef | 0:d26c1b55cfca | 426 | case ECHOREP: |
DieterGraef | 0:d26c1b55cfca | 427 | lcp_received_echo_reply(f, id, inp, len); |
DieterGraef | 0:d26c1b55cfca | 428 | break; |
DieterGraef | 0:d26c1b55cfca | 429 | |
DieterGraef | 0:d26c1b55cfca | 430 | case DISCREQ: |
DieterGraef | 0:d26c1b55cfca | 431 | break; |
DieterGraef | 0:d26c1b55cfca | 432 | |
DieterGraef | 0:d26c1b55cfca | 433 | default: |
DieterGraef | 0:d26c1b55cfca | 434 | return 0; |
DieterGraef | 0:d26c1b55cfca | 435 | } |
DieterGraef | 0:d26c1b55cfca | 436 | return 1; |
DieterGraef | 0:d26c1b55cfca | 437 | } |
DieterGraef | 0:d26c1b55cfca | 438 | |
DieterGraef | 0:d26c1b55cfca | 439 | |
DieterGraef | 0:d26c1b55cfca | 440 | /* |
DieterGraef | 0:d26c1b55cfca | 441 | * lcp_rprotrej - Receive an Protocol-Reject. |
DieterGraef | 0:d26c1b55cfca | 442 | * |
DieterGraef | 0:d26c1b55cfca | 443 | * Figure out which protocol is rejected and inform it. |
DieterGraef | 0:d26c1b55cfca | 444 | */ |
DieterGraef | 0:d26c1b55cfca | 445 | static void |
DieterGraef | 0:d26c1b55cfca | 446 | lcp_rprotrej(fsm *f, u_char *inp, int len) |
DieterGraef | 0:d26c1b55cfca | 447 | { |
DieterGraef | 0:d26c1b55cfca | 448 | int i; |
DieterGraef | 0:d26c1b55cfca | 449 | struct protent *protp; |
DieterGraef | 0:d26c1b55cfca | 450 | u_short prot; |
DieterGraef | 0:d26c1b55cfca | 451 | |
DieterGraef | 0:d26c1b55cfca | 452 | if (len < (int)sizeof (u_short)) { |
DieterGraef | 0:d26c1b55cfca | 453 | LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd short Protocol-Reject packet!\n")); |
DieterGraef | 0:d26c1b55cfca | 454 | return; |
DieterGraef | 0:d26c1b55cfca | 455 | } |
DieterGraef | 0:d26c1b55cfca | 456 | |
DieterGraef | 0:d26c1b55cfca | 457 | GETSHORT(prot, inp); |
DieterGraef | 0:d26c1b55cfca | 458 | |
DieterGraef | 0:d26c1b55cfca | 459 | LCPDEBUG(LOG_INFO, ("lcp_rprotrej: Rcvd Protocol-Reject packet for %x!\n", prot)); |
DieterGraef | 0:d26c1b55cfca | 460 | |
DieterGraef | 0:d26c1b55cfca | 461 | /* |
DieterGraef | 0:d26c1b55cfca | 462 | * Protocol-Reject packets received in any state other than the LCP |
DieterGraef | 0:d26c1b55cfca | 463 | * LS_OPENED state SHOULD be silently discarded. |
DieterGraef | 0:d26c1b55cfca | 464 | */ |
DieterGraef | 0:d26c1b55cfca | 465 | if( f->state != LS_OPENED ) { |
DieterGraef | 0:d26c1b55cfca | 466 | LCPDEBUG(LOG_INFO, ("Protocol-Reject discarded: LCP in state %d\n", f->state)); |
DieterGraef | 0:d26c1b55cfca | 467 | return; |
DieterGraef | 0:d26c1b55cfca | 468 | } |
DieterGraef | 0:d26c1b55cfca | 469 | |
DieterGraef | 0:d26c1b55cfca | 470 | /* |
DieterGraef | 0:d26c1b55cfca | 471 | * Upcall the proper Protocol-Reject routine. |
DieterGraef | 0:d26c1b55cfca | 472 | */ |
DieterGraef | 0:d26c1b55cfca | 473 | for (i = 0; (protp = ppp_protocols[i]) != NULL; ++i) { |
DieterGraef | 0:d26c1b55cfca | 474 | if (protp->protocol == prot && protp->enabled_flag) { |
DieterGraef | 0:d26c1b55cfca | 475 | (*protp->protrej)(f->unit); |
DieterGraef | 0:d26c1b55cfca | 476 | return; |
DieterGraef | 0:d26c1b55cfca | 477 | } |
DieterGraef | 0:d26c1b55cfca | 478 | } |
DieterGraef | 0:d26c1b55cfca | 479 | |
DieterGraef | 0:d26c1b55cfca | 480 | LCPDEBUG(LOG_WARNING, ("Protocol-Reject for unsupported protocol 0x%x\n", prot)); |
DieterGraef | 0:d26c1b55cfca | 481 | } |
DieterGraef | 0:d26c1b55cfca | 482 | |
DieterGraef | 0:d26c1b55cfca | 483 | |
DieterGraef | 0:d26c1b55cfca | 484 | /* |
DieterGraef | 0:d26c1b55cfca | 485 | * lcp_protrej - A Protocol-Reject was received. |
DieterGraef | 0:d26c1b55cfca | 486 | */ |
DieterGraef | 0:d26c1b55cfca | 487 | static void |
DieterGraef | 0:d26c1b55cfca | 488 | lcp_protrej(int unit) |
DieterGraef | 0:d26c1b55cfca | 489 | { |
DieterGraef | 0:d26c1b55cfca | 490 | LWIP_UNUSED_ARG(unit); |
DieterGraef | 0:d26c1b55cfca | 491 | /* |
DieterGraef | 0:d26c1b55cfca | 492 | * Can't reject LCP! |
DieterGraef | 0:d26c1b55cfca | 493 | */ |
DieterGraef | 0:d26c1b55cfca | 494 | LCPDEBUG(LOG_WARNING, ("lcp_protrej: Received Protocol-Reject for LCP!\n")); |
DieterGraef | 0:d26c1b55cfca | 495 | fsm_protreject(&lcp_fsm[unit]); |
DieterGraef | 0:d26c1b55cfca | 496 | } |
DieterGraef | 0:d26c1b55cfca | 497 | |
DieterGraef | 0:d26c1b55cfca | 498 | |
DieterGraef | 0:d26c1b55cfca | 499 | /* |
DieterGraef | 0:d26c1b55cfca | 500 | * lcp_sprotrej - Send a Protocol-Reject for some protocol. |
DieterGraef | 0:d26c1b55cfca | 501 | */ |
DieterGraef | 0:d26c1b55cfca | 502 | void |
DieterGraef | 0:d26c1b55cfca | 503 | lcp_sprotrej(int unit, u_char *p, int len) |
DieterGraef | 0:d26c1b55cfca | 504 | { |
DieterGraef | 0:d26c1b55cfca | 505 | /* |
DieterGraef | 0:d26c1b55cfca | 506 | * Send back the protocol and the information field of the |
DieterGraef | 0:d26c1b55cfca | 507 | * rejected packet. We only get here if LCP is in the LS_OPENED state. |
DieterGraef | 0:d26c1b55cfca | 508 | */ |
DieterGraef | 0:d26c1b55cfca | 509 | |
DieterGraef | 0:d26c1b55cfca | 510 | fsm_sdata(&lcp_fsm[unit], PROTREJ, ++lcp_fsm[unit].id, p, len); |
DieterGraef | 0:d26c1b55cfca | 511 | } |
DieterGraef | 0:d26c1b55cfca | 512 | |
DieterGraef | 0:d26c1b55cfca | 513 | |
DieterGraef | 0:d26c1b55cfca | 514 | /* |
DieterGraef | 0:d26c1b55cfca | 515 | * lcp_resetci - Reset our CI. |
DieterGraef | 0:d26c1b55cfca | 516 | */ |
DieterGraef | 0:d26c1b55cfca | 517 | static void |
DieterGraef | 0:d26c1b55cfca | 518 | lcp_resetci(fsm *f) |
DieterGraef | 0:d26c1b55cfca | 519 | { |
DieterGraef | 0:d26c1b55cfca | 520 | lcp_wantoptions[f->unit].magicnumber = magic(); |
DieterGraef | 0:d26c1b55cfca | 521 | lcp_wantoptions[f->unit].numloops = 0; |
DieterGraef | 0:d26c1b55cfca | 522 | lcp_gotoptions[f->unit] = lcp_wantoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 523 | peer_mru[f->unit] = PPP_MRU; |
DieterGraef | 0:d26c1b55cfca | 524 | auth_reset(f->unit); |
DieterGraef | 0:d26c1b55cfca | 525 | } |
DieterGraef | 0:d26c1b55cfca | 526 | |
DieterGraef | 0:d26c1b55cfca | 527 | |
DieterGraef | 0:d26c1b55cfca | 528 | /* |
DieterGraef | 0:d26c1b55cfca | 529 | * lcp_cilen - Return length of our CI. |
DieterGraef | 0:d26c1b55cfca | 530 | */ |
DieterGraef | 0:d26c1b55cfca | 531 | static int |
DieterGraef | 0:d26c1b55cfca | 532 | lcp_cilen(fsm *f) |
DieterGraef | 0:d26c1b55cfca | 533 | { |
DieterGraef | 0:d26c1b55cfca | 534 | lcp_options *go = &lcp_gotoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 535 | |
DieterGraef | 0:d26c1b55cfca | 536 | #define LENCIVOID(neg) ((neg) ? CILEN_VOID : 0) |
DieterGraef | 0:d26c1b55cfca | 537 | #define LENCICHAP(neg) ((neg) ? CILEN_CHAP : 0) |
DieterGraef | 0:d26c1b55cfca | 538 | #define LENCISHORT(neg) ((neg) ? CILEN_SHORT : 0) |
DieterGraef | 0:d26c1b55cfca | 539 | #define LENCILONG(neg) ((neg) ? CILEN_LONG : 0) |
DieterGraef | 0:d26c1b55cfca | 540 | #define LENCILQR(neg) ((neg) ? CILEN_LQR: 0) |
DieterGraef | 0:d26c1b55cfca | 541 | #define LENCICBCP(neg) ((neg) ? CILEN_CBCP: 0) |
DieterGraef | 0:d26c1b55cfca | 542 | /* |
DieterGraef | 0:d26c1b55cfca | 543 | * NB: we only ask for one of CHAP and UPAP, even if we will |
DieterGraef | 0:d26c1b55cfca | 544 | * accept either. |
DieterGraef | 0:d26c1b55cfca | 545 | */ |
DieterGraef | 0:d26c1b55cfca | 546 | return (LENCISHORT(go->neg_mru && go->mru != PPP_DEFMRU) + |
DieterGraef | 0:d26c1b55cfca | 547 | LENCILONG(go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) + |
DieterGraef | 0:d26c1b55cfca | 548 | LENCICHAP(go->neg_chap) + |
DieterGraef | 0:d26c1b55cfca | 549 | LENCISHORT(!go->neg_chap && go->neg_upap) + |
DieterGraef | 0:d26c1b55cfca | 550 | LENCILQR(go->neg_lqr) + |
DieterGraef | 0:d26c1b55cfca | 551 | LENCICBCP(go->neg_cbcp) + |
DieterGraef | 0:d26c1b55cfca | 552 | LENCILONG(go->neg_magicnumber) + |
DieterGraef | 0:d26c1b55cfca | 553 | LENCIVOID(go->neg_pcompression) + |
DieterGraef | 0:d26c1b55cfca | 554 | LENCIVOID(go->neg_accompression)); |
DieterGraef | 0:d26c1b55cfca | 555 | } |
DieterGraef | 0:d26c1b55cfca | 556 | |
DieterGraef | 0:d26c1b55cfca | 557 | |
DieterGraef | 0:d26c1b55cfca | 558 | /* |
DieterGraef | 0:d26c1b55cfca | 559 | * lcp_addci - Add our desired CIs to a packet. |
DieterGraef | 0:d26c1b55cfca | 560 | */ |
DieterGraef | 0:d26c1b55cfca | 561 | static void |
DieterGraef | 0:d26c1b55cfca | 562 | lcp_addci(fsm *f, u_char *ucp, int *lenp) |
DieterGraef | 0:d26c1b55cfca | 563 | { |
DieterGraef | 0:d26c1b55cfca | 564 | lcp_options *go = &lcp_gotoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 565 | u_char *start_ucp = ucp; |
DieterGraef | 0:d26c1b55cfca | 566 | |
DieterGraef | 0:d26c1b55cfca | 567 | #define ADDCIVOID(opt, neg) \ |
DieterGraef | 0:d26c1b55cfca | 568 | if (neg) { \ |
DieterGraef | 0:d26c1b55cfca | 569 | LCPDEBUG(LOG_INFO, ("lcp_addci: opt=%d\n", opt)); \ |
DieterGraef | 0:d26c1b55cfca | 570 | PUTCHAR(opt, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 571 | PUTCHAR(CILEN_VOID, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 572 | } |
DieterGraef | 0:d26c1b55cfca | 573 | #define ADDCISHORT(opt, neg, val) \ |
DieterGraef | 0:d26c1b55cfca | 574 | if (neg) { \ |
DieterGraef | 0:d26c1b55cfca | 575 | LCPDEBUG(LOG_INFO, ("lcp_addci: INT opt=%d %X\n", opt, val)); \ |
DieterGraef | 0:d26c1b55cfca | 576 | PUTCHAR(opt, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 577 | PUTCHAR(CILEN_SHORT, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 578 | PUTSHORT(val, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 579 | } |
DieterGraef | 0:d26c1b55cfca | 580 | #define ADDCICHAP(opt, neg, val, digest) \ |
DieterGraef | 0:d26c1b55cfca | 581 | if (neg) { \ |
DieterGraef | 0:d26c1b55cfca | 582 | LCPDEBUG(LOG_INFO, ("lcp_addci: CHAP opt=%d %X\n", opt, val)); \ |
DieterGraef | 0:d26c1b55cfca | 583 | PUTCHAR(opt, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 584 | PUTCHAR(CILEN_CHAP, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 585 | PUTSHORT(val, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 586 | PUTCHAR(digest, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 587 | } |
DieterGraef | 0:d26c1b55cfca | 588 | #define ADDCILONG(opt, neg, val) \ |
DieterGraef | 0:d26c1b55cfca | 589 | if (neg) { \ |
DieterGraef | 0:d26c1b55cfca | 590 | LCPDEBUG(LOG_INFO, ("lcp_addci: L opt=%d %lX\n", opt, val)); \ |
DieterGraef | 0:d26c1b55cfca | 591 | PUTCHAR(opt, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 592 | PUTCHAR(CILEN_LONG, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 593 | PUTLONG(val, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 594 | } |
DieterGraef | 0:d26c1b55cfca | 595 | #define ADDCILQR(opt, neg, val) \ |
DieterGraef | 0:d26c1b55cfca | 596 | if (neg) { \ |
DieterGraef | 0:d26c1b55cfca | 597 | LCPDEBUG(LOG_INFO, ("lcp_addci: LQR opt=%d %lX\n", opt, val)); \ |
DieterGraef | 0:d26c1b55cfca | 598 | PUTCHAR(opt, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 599 | PUTCHAR(CILEN_LQR, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 600 | PUTSHORT(PPP_LQR, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 601 | PUTLONG(val, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 602 | } |
DieterGraef | 0:d26c1b55cfca | 603 | #define ADDCICHAR(opt, neg, val) \ |
DieterGraef | 0:d26c1b55cfca | 604 | if (neg) { \ |
DieterGraef | 0:d26c1b55cfca | 605 | LCPDEBUG(LOG_INFO, ("lcp_addci: CHAR opt=%d %X '%z'\n", opt, val, val)); \ |
DieterGraef | 0:d26c1b55cfca | 606 | PUTCHAR(opt, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 607 | PUTCHAR(CILEN_CHAR, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 608 | PUTCHAR(val, ucp); \ |
DieterGraef | 0:d26c1b55cfca | 609 | } |
DieterGraef | 0:d26c1b55cfca | 610 | |
DieterGraef | 0:d26c1b55cfca | 611 | ADDCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru); |
DieterGraef | 0:d26c1b55cfca | 612 | ADDCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap); |
DieterGraef | 0:d26c1b55cfca | 613 | ADDCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype); |
DieterGraef | 0:d26c1b55cfca | 614 | ADDCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP); |
DieterGraef | 0:d26c1b55cfca | 615 | ADDCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period); |
DieterGraef | 0:d26c1b55cfca | 616 | ADDCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT); |
DieterGraef | 0:d26c1b55cfca | 617 | ADDCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber); |
DieterGraef | 0:d26c1b55cfca | 618 | ADDCIVOID(CI_PCOMPRESSION, go->neg_pcompression); |
DieterGraef | 0:d26c1b55cfca | 619 | ADDCIVOID(CI_ACCOMPRESSION, go->neg_accompression); |
DieterGraef | 0:d26c1b55cfca | 620 | |
DieterGraef | 0:d26c1b55cfca | 621 | if (ucp - start_ucp != *lenp) { |
DieterGraef | 0:d26c1b55cfca | 622 | /* this should never happen, because peer_mtu should be 1500 */ |
DieterGraef | 0:d26c1b55cfca | 623 | LCPDEBUG(LOG_ERR, ("Bug in lcp_addci: wrong length\n")); |
DieterGraef | 0:d26c1b55cfca | 624 | } |
DieterGraef | 0:d26c1b55cfca | 625 | } |
DieterGraef | 0:d26c1b55cfca | 626 | |
DieterGraef | 0:d26c1b55cfca | 627 | |
DieterGraef | 0:d26c1b55cfca | 628 | /* |
DieterGraef | 0:d26c1b55cfca | 629 | * lcp_ackci - Ack our CIs. |
DieterGraef | 0:d26c1b55cfca | 630 | * This should not modify any state if the Ack is bad. |
DieterGraef | 0:d26c1b55cfca | 631 | * |
DieterGraef | 0:d26c1b55cfca | 632 | * Returns: |
DieterGraef | 0:d26c1b55cfca | 633 | * 0 - Ack was bad. |
DieterGraef | 0:d26c1b55cfca | 634 | * 1 - Ack was good. |
DieterGraef | 0:d26c1b55cfca | 635 | */ |
DieterGraef | 0:d26c1b55cfca | 636 | static int |
DieterGraef | 0:d26c1b55cfca | 637 | lcp_ackci(fsm *f, u_char *p, int len) |
DieterGraef | 0:d26c1b55cfca | 638 | { |
DieterGraef | 0:d26c1b55cfca | 639 | lcp_options *go = &lcp_gotoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 640 | u_char cilen, citype, cichar; |
DieterGraef | 0:d26c1b55cfca | 641 | u_short cishort; |
DieterGraef | 0:d26c1b55cfca | 642 | u32_t cilong; |
DieterGraef | 0:d26c1b55cfca | 643 | |
DieterGraef | 0:d26c1b55cfca | 644 | /* |
DieterGraef | 0:d26c1b55cfca | 645 | * CIs must be in exactly the same order that we sent. |
DieterGraef | 0:d26c1b55cfca | 646 | * Check packet length and CI length at each step. |
DieterGraef | 0:d26c1b55cfca | 647 | * If we find any deviations, then this packet is bad. |
DieterGraef | 0:d26c1b55cfca | 648 | */ |
DieterGraef | 0:d26c1b55cfca | 649 | #define ACKCIVOID(opt, neg) \ |
DieterGraef | 0:d26c1b55cfca | 650 | if (neg) { \ |
DieterGraef | 0:d26c1b55cfca | 651 | if ((len -= CILEN_VOID) < 0) \ |
DieterGraef | 0:d26c1b55cfca | 652 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 653 | GETCHAR(citype, p); \ |
DieterGraef | 0:d26c1b55cfca | 654 | GETCHAR(cilen, p); \ |
DieterGraef | 0:d26c1b55cfca | 655 | if (cilen != CILEN_VOID || citype != opt) \ |
DieterGraef | 0:d26c1b55cfca | 656 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 657 | } |
DieterGraef | 0:d26c1b55cfca | 658 | #define ACKCISHORT(opt, neg, val) \ |
DieterGraef | 0:d26c1b55cfca | 659 | if (neg) { \ |
DieterGraef | 0:d26c1b55cfca | 660 | if ((len -= CILEN_SHORT) < 0) \ |
DieterGraef | 0:d26c1b55cfca | 661 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 662 | GETCHAR(citype, p); \ |
DieterGraef | 0:d26c1b55cfca | 663 | GETCHAR(cilen, p); \ |
DieterGraef | 0:d26c1b55cfca | 664 | if (cilen != CILEN_SHORT || citype != opt) \ |
DieterGraef | 0:d26c1b55cfca | 665 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 666 | GETSHORT(cishort, p); \ |
DieterGraef | 0:d26c1b55cfca | 667 | if (cishort != val) \ |
DieterGraef | 0:d26c1b55cfca | 668 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 669 | } |
DieterGraef | 0:d26c1b55cfca | 670 | #define ACKCICHAR(opt, neg, val) \ |
DieterGraef | 0:d26c1b55cfca | 671 | if (neg) { \ |
DieterGraef | 0:d26c1b55cfca | 672 | if ((len -= CILEN_CHAR) < 0) \ |
DieterGraef | 0:d26c1b55cfca | 673 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 674 | GETCHAR(citype, p); \ |
DieterGraef | 0:d26c1b55cfca | 675 | GETCHAR(cilen, p); \ |
DieterGraef | 0:d26c1b55cfca | 676 | if (cilen != CILEN_CHAR || citype != opt) \ |
DieterGraef | 0:d26c1b55cfca | 677 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 678 | GETCHAR(cichar, p); \ |
DieterGraef | 0:d26c1b55cfca | 679 | if (cichar != val) \ |
DieterGraef | 0:d26c1b55cfca | 680 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 681 | } |
DieterGraef | 0:d26c1b55cfca | 682 | #define ACKCICHAP(opt, neg, val, digest) \ |
DieterGraef | 0:d26c1b55cfca | 683 | if (neg) { \ |
DieterGraef | 0:d26c1b55cfca | 684 | if ((len -= CILEN_CHAP) < 0) \ |
DieterGraef | 0:d26c1b55cfca | 685 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 686 | GETCHAR(citype, p); \ |
DieterGraef | 0:d26c1b55cfca | 687 | GETCHAR(cilen, p); \ |
DieterGraef | 0:d26c1b55cfca | 688 | if (cilen != CILEN_CHAP || citype != opt) \ |
DieterGraef | 0:d26c1b55cfca | 689 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 690 | GETSHORT(cishort, p); \ |
DieterGraef | 0:d26c1b55cfca | 691 | if (cishort != val) \ |
DieterGraef | 0:d26c1b55cfca | 692 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 693 | GETCHAR(cichar, p); \ |
DieterGraef | 0:d26c1b55cfca | 694 | if (cichar != digest) \ |
DieterGraef | 0:d26c1b55cfca | 695 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 696 | } |
DieterGraef | 0:d26c1b55cfca | 697 | #define ACKCILONG(opt, neg, val) \ |
DieterGraef | 0:d26c1b55cfca | 698 | if (neg) { \ |
DieterGraef | 0:d26c1b55cfca | 699 | if ((len -= CILEN_LONG) < 0) \ |
DieterGraef | 0:d26c1b55cfca | 700 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 701 | GETCHAR(citype, p); \ |
DieterGraef | 0:d26c1b55cfca | 702 | GETCHAR(cilen, p); \ |
DieterGraef | 0:d26c1b55cfca | 703 | if (cilen != CILEN_LONG || citype != opt) \ |
DieterGraef | 0:d26c1b55cfca | 704 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 705 | GETLONG(cilong, p); \ |
DieterGraef | 0:d26c1b55cfca | 706 | if (cilong != val) \ |
DieterGraef | 0:d26c1b55cfca | 707 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 708 | } |
DieterGraef | 0:d26c1b55cfca | 709 | #define ACKCILQR(opt, neg, val) \ |
DieterGraef | 0:d26c1b55cfca | 710 | if (neg) { \ |
DieterGraef | 0:d26c1b55cfca | 711 | if ((len -= CILEN_LQR) < 0) \ |
DieterGraef | 0:d26c1b55cfca | 712 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 713 | GETCHAR(citype, p); \ |
DieterGraef | 0:d26c1b55cfca | 714 | GETCHAR(cilen, p); \ |
DieterGraef | 0:d26c1b55cfca | 715 | if (cilen != CILEN_LQR || citype != opt) \ |
DieterGraef | 0:d26c1b55cfca | 716 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 717 | GETSHORT(cishort, p); \ |
DieterGraef | 0:d26c1b55cfca | 718 | if (cishort != PPP_LQR) \ |
DieterGraef | 0:d26c1b55cfca | 719 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 720 | GETLONG(cilong, p); \ |
DieterGraef | 0:d26c1b55cfca | 721 | if (cilong != val) \ |
DieterGraef | 0:d26c1b55cfca | 722 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 723 | } |
DieterGraef | 0:d26c1b55cfca | 724 | |
DieterGraef | 0:d26c1b55cfca | 725 | ACKCISHORT(CI_MRU, go->neg_mru && go->mru != PPP_DEFMRU, go->mru); |
DieterGraef | 0:d26c1b55cfca | 726 | ACKCILONG(CI_ASYNCMAP, go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl, go->asyncmap); |
DieterGraef | 0:d26c1b55cfca | 727 | ACKCICHAP(CI_AUTHTYPE, go->neg_chap, PPP_CHAP, go->chap_mdtype); |
DieterGraef | 0:d26c1b55cfca | 728 | ACKCISHORT(CI_AUTHTYPE, !go->neg_chap && go->neg_upap, PPP_PAP); |
DieterGraef | 0:d26c1b55cfca | 729 | ACKCILQR(CI_QUALITY, go->neg_lqr, go->lqr_period); |
DieterGraef | 0:d26c1b55cfca | 730 | ACKCICHAR(CI_CALLBACK, go->neg_cbcp, CBCP_OPT); |
DieterGraef | 0:d26c1b55cfca | 731 | ACKCILONG(CI_MAGICNUMBER, go->neg_magicnumber, go->magicnumber); |
DieterGraef | 0:d26c1b55cfca | 732 | ACKCIVOID(CI_PCOMPRESSION, go->neg_pcompression); |
DieterGraef | 0:d26c1b55cfca | 733 | ACKCIVOID(CI_ACCOMPRESSION, go->neg_accompression); |
DieterGraef | 0:d26c1b55cfca | 734 | |
DieterGraef | 0:d26c1b55cfca | 735 | /* |
DieterGraef | 0:d26c1b55cfca | 736 | * If there are any remaining CIs, then this packet is bad. |
DieterGraef | 0:d26c1b55cfca | 737 | */ |
DieterGraef | 0:d26c1b55cfca | 738 | if (len != 0) { |
DieterGraef | 0:d26c1b55cfca | 739 | goto bad; |
DieterGraef | 0:d26c1b55cfca | 740 | } |
DieterGraef | 0:d26c1b55cfca | 741 | LCPDEBUG(LOG_INFO, ("lcp_acki: Ack\n")); |
DieterGraef | 0:d26c1b55cfca | 742 | return (1); |
DieterGraef | 0:d26c1b55cfca | 743 | bad: |
DieterGraef | 0:d26c1b55cfca | 744 | LCPDEBUG(LOG_WARNING, ("lcp_acki: received bad Ack!\n")); |
DieterGraef | 0:d26c1b55cfca | 745 | return (0); |
DieterGraef | 0:d26c1b55cfca | 746 | } |
DieterGraef | 0:d26c1b55cfca | 747 | |
DieterGraef | 0:d26c1b55cfca | 748 | |
DieterGraef | 0:d26c1b55cfca | 749 | /* |
DieterGraef | 0:d26c1b55cfca | 750 | * lcp_nakci - Peer has sent a NAK for some of our CIs. |
DieterGraef | 0:d26c1b55cfca | 751 | * This should not modify any state if the Nak is bad |
DieterGraef | 0:d26c1b55cfca | 752 | * or if LCP is in the LS_OPENED state. |
DieterGraef | 0:d26c1b55cfca | 753 | * |
DieterGraef | 0:d26c1b55cfca | 754 | * Returns: |
DieterGraef | 0:d26c1b55cfca | 755 | * 0 - Nak was bad. |
DieterGraef | 0:d26c1b55cfca | 756 | * 1 - Nak was good. |
DieterGraef | 0:d26c1b55cfca | 757 | */ |
DieterGraef | 0:d26c1b55cfca | 758 | static int |
DieterGraef | 0:d26c1b55cfca | 759 | lcp_nakci(fsm *f, u_char *p, int len) |
DieterGraef | 0:d26c1b55cfca | 760 | { |
DieterGraef | 0:d26c1b55cfca | 761 | lcp_options *go = &lcp_gotoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 762 | lcp_options *wo = &lcp_wantoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 763 | u_char citype, cichar, *next; |
DieterGraef | 0:d26c1b55cfca | 764 | u_short cishort; |
DieterGraef | 0:d26c1b55cfca | 765 | u32_t cilong; |
DieterGraef | 0:d26c1b55cfca | 766 | lcp_options no; /* options we've seen Naks for */ |
DieterGraef | 0:d26c1b55cfca | 767 | lcp_options try; /* options to request next time */ |
DieterGraef | 0:d26c1b55cfca | 768 | int looped_back = 0; |
DieterGraef | 0:d26c1b55cfca | 769 | int cilen; |
DieterGraef | 0:d26c1b55cfca | 770 | |
DieterGraef | 0:d26c1b55cfca | 771 | BZERO(&no, sizeof(no)); |
DieterGraef | 0:d26c1b55cfca | 772 | try = *go; |
DieterGraef | 0:d26c1b55cfca | 773 | |
DieterGraef | 0:d26c1b55cfca | 774 | /* |
DieterGraef | 0:d26c1b55cfca | 775 | * Any Nak'd CIs must be in exactly the same order that we sent. |
DieterGraef | 0:d26c1b55cfca | 776 | * Check packet length and CI length at each step. |
DieterGraef | 0:d26c1b55cfca | 777 | * If we find any deviations, then this packet is bad. |
DieterGraef | 0:d26c1b55cfca | 778 | */ |
DieterGraef | 0:d26c1b55cfca | 779 | #define NAKCIVOID(opt, neg, code) \ |
DieterGraef | 0:d26c1b55cfca | 780 | if (go->neg && \ |
DieterGraef | 0:d26c1b55cfca | 781 | len >= CILEN_VOID && \ |
DieterGraef | 0:d26c1b55cfca | 782 | p[1] == CILEN_VOID && \ |
DieterGraef | 0:d26c1b55cfca | 783 | p[0] == opt) { \ |
DieterGraef | 0:d26c1b55cfca | 784 | len -= CILEN_VOID; \ |
DieterGraef | 0:d26c1b55cfca | 785 | INCPTR(CILEN_VOID, p); \ |
DieterGraef | 0:d26c1b55cfca | 786 | no.neg = 1; \ |
DieterGraef | 0:d26c1b55cfca | 787 | code \ |
DieterGraef | 0:d26c1b55cfca | 788 | } |
DieterGraef | 0:d26c1b55cfca | 789 | #define NAKCICHAP(opt, neg, code) \ |
DieterGraef | 0:d26c1b55cfca | 790 | if (go->neg && \ |
DieterGraef | 0:d26c1b55cfca | 791 | len >= CILEN_CHAP && \ |
DieterGraef | 0:d26c1b55cfca | 792 | p[1] == CILEN_CHAP && \ |
DieterGraef | 0:d26c1b55cfca | 793 | p[0] == opt) { \ |
DieterGraef | 0:d26c1b55cfca | 794 | len -= CILEN_CHAP; \ |
DieterGraef | 0:d26c1b55cfca | 795 | INCPTR(2, p); \ |
DieterGraef | 0:d26c1b55cfca | 796 | GETSHORT(cishort, p); \ |
DieterGraef | 0:d26c1b55cfca | 797 | GETCHAR(cichar, p); \ |
DieterGraef | 0:d26c1b55cfca | 798 | no.neg = 1; \ |
DieterGraef | 0:d26c1b55cfca | 799 | code \ |
DieterGraef | 0:d26c1b55cfca | 800 | } |
DieterGraef | 0:d26c1b55cfca | 801 | #define NAKCICHAR(opt, neg, code) \ |
DieterGraef | 0:d26c1b55cfca | 802 | if (go->neg && \ |
DieterGraef | 0:d26c1b55cfca | 803 | len >= CILEN_CHAR && \ |
DieterGraef | 0:d26c1b55cfca | 804 | p[1] == CILEN_CHAR && \ |
DieterGraef | 0:d26c1b55cfca | 805 | p[0] == opt) { \ |
DieterGraef | 0:d26c1b55cfca | 806 | len -= CILEN_CHAR; \ |
DieterGraef | 0:d26c1b55cfca | 807 | INCPTR(2, p); \ |
DieterGraef | 0:d26c1b55cfca | 808 | GETCHAR(cichar, p); \ |
DieterGraef | 0:d26c1b55cfca | 809 | no.neg = 1; \ |
DieterGraef | 0:d26c1b55cfca | 810 | code \ |
DieterGraef | 0:d26c1b55cfca | 811 | } |
DieterGraef | 0:d26c1b55cfca | 812 | #define NAKCISHORT(opt, neg, code) \ |
DieterGraef | 0:d26c1b55cfca | 813 | if (go->neg && \ |
DieterGraef | 0:d26c1b55cfca | 814 | len >= CILEN_SHORT && \ |
DieterGraef | 0:d26c1b55cfca | 815 | p[1] == CILEN_SHORT && \ |
DieterGraef | 0:d26c1b55cfca | 816 | p[0] == opt) { \ |
DieterGraef | 0:d26c1b55cfca | 817 | len -= CILEN_SHORT; \ |
DieterGraef | 0:d26c1b55cfca | 818 | INCPTR(2, p); \ |
DieterGraef | 0:d26c1b55cfca | 819 | GETSHORT(cishort, p); \ |
DieterGraef | 0:d26c1b55cfca | 820 | no.neg = 1; \ |
DieterGraef | 0:d26c1b55cfca | 821 | code \ |
DieterGraef | 0:d26c1b55cfca | 822 | } |
DieterGraef | 0:d26c1b55cfca | 823 | #define NAKCILONG(opt, neg, code) \ |
DieterGraef | 0:d26c1b55cfca | 824 | if (go->neg && \ |
DieterGraef | 0:d26c1b55cfca | 825 | len >= CILEN_LONG && \ |
DieterGraef | 0:d26c1b55cfca | 826 | p[1] == CILEN_LONG && \ |
DieterGraef | 0:d26c1b55cfca | 827 | p[0] == opt) { \ |
DieterGraef | 0:d26c1b55cfca | 828 | len -= CILEN_LONG; \ |
DieterGraef | 0:d26c1b55cfca | 829 | INCPTR(2, p); \ |
DieterGraef | 0:d26c1b55cfca | 830 | GETLONG(cilong, p); \ |
DieterGraef | 0:d26c1b55cfca | 831 | no.neg = 1; \ |
DieterGraef | 0:d26c1b55cfca | 832 | code \ |
DieterGraef | 0:d26c1b55cfca | 833 | } |
DieterGraef | 0:d26c1b55cfca | 834 | #define NAKCILQR(opt, neg, code) \ |
DieterGraef | 0:d26c1b55cfca | 835 | if (go->neg && \ |
DieterGraef | 0:d26c1b55cfca | 836 | len >= CILEN_LQR && \ |
DieterGraef | 0:d26c1b55cfca | 837 | p[1] == CILEN_LQR && \ |
DieterGraef | 0:d26c1b55cfca | 838 | p[0] == opt) { \ |
DieterGraef | 0:d26c1b55cfca | 839 | len -= CILEN_LQR; \ |
DieterGraef | 0:d26c1b55cfca | 840 | INCPTR(2, p); \ |
DieterGraef | 0:d26c1b55cfca | 841 | GETSHORT(cishort, p); \ |
DieterGraef | 0:d26c1b55cfca | 842 | GETLONG(cilong, p); \ |
DieterGraef | 0:d26c1b55cfca | 843 | no.neg = 1; \ |
DieterGraef | 0:d26c1b55cfca | 844 | code \ |
DieterGraef | 0:d26c1b55cfca | 845 | } |
DieterGraef | 0:d26c1b55cfca | 846 | |
DieterGraef | 0:d26c1b55cfca | 847 | /* |
DieterGraef | 0:d26c1b55cfca | 848 | * We don't care if they want to send us smaller packets than |
DieterGraef | 0:d26c1b55cfca | 849 | * we want. Therefore, accept any MRU less than what we asked for, |
DieterGraef | 0:d26c1b55cfca | 850 | * but then ignore the new value when setting the MRU in the kernel. |
DieterGraef | 0:d26c1b55cfca | 851 | * If they send us a bigger MRU than what we asked, accept it, up to |
DieterGraef | 0:d26c1b55cfca | 852 | * the limit of the default MRU we'd get if we didn't negotiate. |
DieterGraef | 0:d26c1b55cfca | 853 | */ |
DieterGraef | 0:d26c1b55cfca | 854 | if (go->neg_mru && go->mru != PPP_DEFMRU) { |
DieterGraef | 0:d26c1b55cfca | 855 | NAKCISHORT(CI_MRU, neg_mru, |
DieterGraef | 0:d26c1b55cfca | 856 | if (cishort <= wo->mru || cishort < PPP_DEFMRU) { |
DieterGraef | 0:d26c1b55cfca | 857 | try.mru = cishort; |
DieterGraef | 0:d26c1b55cfca | 858 | } |
DieterGraef | 0:d26c1b55cfca | 859 | ); |
DieterGraef | 0:d26c1b55cfca | 860 | } |
DieterGraef | 0:d26c1b55cfca | 861 | |
DieterGraef | 0:d26c1b55cfca | 862 | /* |
DieterGraef | 0:d26c1b55cfca | 863 | * Add any characters they want to our (receive-side) asyncmap. |
DieterGraef | 0:d26c1b55cfca | 864 | */ |
DieterGraef | 0:d26c1b55cfca | 865 | if (go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) { |
DieterGraef | 0:d26c1b55cfca | 866 | NAKCILONG(CI_ASYNCMAP, neg_asyncmap, |
DieterGraef | 0:d26c1b55cfca | 867 | try.asyncmap = go->asyncmap | cilong; |
DieterGraef | 0:d26c1b55cfca | 868 | ); |
DieterGraef | 0:d26c1b55cfca | 869 | } |
DieterGraef | 0:d26c1b55cfca | 870 | |
DieterGraef | 0:d26c1b55cfca | 871 | /* |
DieterGraef | 0:d26c1b55cfca | 872 | * If they've nak'd our authentication-protocol, check whether |
DieterGraef | 0:d26c1b55cfca | 873 | * they are proposing a different protocol, or a different |
DieterGraef | 0:d26c1b55cfca | 874 | * hash algorithm for CHAP. |
DieterGraef | 0:d26c1b55cfca | 875 | */ |
DieterGraef | 0:d26c1b55cfca | 876 | if ((go->neg_chap || go->neg_upap) |
DieterGraef | 0:d26c1b55cfca | 877 | && len >= CILEN_SHORT |
DieterGraef | 0:d26c1b55cfca | 878 | && p[0] == CI_AUTHTYPE && p[1] >= CILEN_SHORT && p[1] <= len) { |
DieterGraef | 0:d26c1b55cfca | 879 | cilen = p[1]; |
DieterGraef | 0:d26c1b55cfca | 880 | len -= cilen; |
DieterGraef | 0:d26c1b55cfca | 881 | no.neg_chap = go->neg_chap; |
DieterGraef | 0:d26c1b55cfca | 882 | no.neg_upap = go->neg_upap; |
DieterGraef | 0:d26c1b55cfca | 883 | INCPTR(2, p); |
DieterGraef | 0:d26c1b55cfca | 884 | GETSHORT(cishort, p); |
DieterGraef | 0:d26c1b55cfca | 885 | if (cishort == PPP_PAP && cilen == CILEN_SHORT) { |
DieterGraef | 0:d26c1b55cfca | 886 | /* |
DieterGraef | 0:d26c1b55cfca | 887 | * If we were asking for CHAP, they obviously don't want to do it. |
DieterGraef | 0:d26c1b55cfca | 888 | * If we weren't asking for CHAP, then we were asking for PAP, |
DieterGraef | 0:d26c1b55cfca | 889 | * in which case this Nak is bad. |
DieterGraef | 0:d26c1b55cfca | 890 | */ |
DieterGraef | 0:d26c1b55cfca | 891 | if (!go->neg_chap) { |
DieterGraef | 0:d26c1b55cfca | 892 | goto bad; |
DieterGraef | 0:d26c1b55cfca | 893 | } |
DieterGraef | 0:d26c1b55cfca | 894 | try.neg_chap = 0; |
DieterGraef | 0:d26c1b55cfca | 895 | |
DieterGraef | 0:d26c1b55cfca | 896 | } else if (cishort == PPP_CHAP && cilen == CILEN_CHAP) { |
DieterGraef | 0:d26c1b55cfca | 897 | GETCHAR(cichar, p); |
DieterGraef | 0:d26c1b55cfca | 898 | if (go->neg_chap) { |
DieterGraef | 0:d26c1b55cfca | 899 | /* |
DieterGraef | 0:d26c1b55cfca | 900 | * We were asking for CHAP/MD5; they must want a different |
DieterGraef | 0:d26c1b55cfca | 901 | * algorithm. If they can't do MD5, we'll have to stop |
DieterGraef | 0:d26c1b55cfca | 902 | * asking for CHAP. |
DieterGraef | 0:d26c1b55cfca | 903 | */ |
DieterGraef | 0:d26c1b55cfca | 904 | if (cichar != go->chap_mdtype) { |
DieterGraef | 0:d26c1b55cfca | 905 | try.neg_chap = 0; |
DieterGraef | 0:d26c1b55cfca | 906 | } |
DieterGraef | 0:d26c1b55cfca | 907 | } else { |
DieterGraef | 0:d26c1b55cfca | 908 | /* |
DieterGraef | 0:d26c1b55cfca | 909 | * Stop asking for PAP if we were asking for it. |
DieterGraef | 0:d26c1b55cfca | 910 | */ |
DieterGraef | 0:d26c1b55cfca | 911 | try.neg_upap = 0; |
DieterGraef | 0:d26c1b55cfca | 912 | } |
DieterGraef | 0:d26c1b55cfca | 913 | |
DieterGraef | 0:d26c1b55cfca | 914 | } else { |
DieterGraef | 0:d26c1b55cfca | 915 | /* |
DieterGraef | 0:d26c1b55cfca | 916 | * We don't recognize what they're suggesting. |
DieterGraef | 0:d26c1b55cfca | 917 | * Stop asking for what we were asking for. |
DieterGraef | 0:d26c1b55cfca | 918 | */ |
DieterGraef | 0:d26c1b55cfca | 919 | if (go->neg_chap) { |
DieterGraef | 0:d26c1b55cfca | 920 | try.neg_chap = 0; |
DieterGraef | 0:d26c1b55cfca | 921 | } else { |
DieterGraef | 0:d26c1b55cfca | 922 | try.neg_upap = 0; |
DieterGraef | 0:d26c1b55cfca | 923 | } |
DieterGraef | 0:d26c1b55cfca | 924 | p += cilen - CILEN_SHORT; |
DieterGraef | 0:d26c1b55cfca | 925 | } |
DieterGraef | 0:d26c1b55cfca | 926 | } |
DieterGraef | 0:d26c1b55cfca | 927 | |
DieterGraef | 0:d26c1b55cfca | 928 | /* |
DieterGraef | 0:d26c1b55cfca | 929 | * If they can't cope with our link quality protocol, we'll have |
DieterGraef | 0:d26c1b55cfca | 930 | * to stop asking for LQR. We haven't got any other protocol. |
DieterGraef | 0:d26c1b55cfca | 931 | * If they Nak the reporting period, take their value XXX ? |
DieterGraef | 0:d26c1b55cfca | 932 | */ |
DieterGraef | 0:d26c1b55cfca | 933 | NAKCILQR(CI_QUALITY, neg_lqr, |
DieterGraef | 0:d26c1b55cfca | 934 | if (cishort != PPP_LQR) { |
DieterGraef | 0:d26c1b55cfca | 935 | try.neg_lqr = 0; |
DieterGraef | 0:d26c1b55cfca | 936 | } else { |
DieterGraef | 0:d26c1b55cfca | 937 | try.lqr_period = cilong; |
DieterGraef | 0:d26c1b55cfca | 938 | } |
DieterGraef | 0:d26c1b55cfca | 939 | ); |
DieterGraef | 0:d26c1b55cfca | 940 | |
DieterGraef | 0:d26c1b55cfca | 941 | /* |
DieterGraef | 0:d26c1b55cfca | 942 | * Only implementing CBCP...not the rest of the callback options |
DieterGraef | 0:d26c1b55cfca | 943 | */ |
DieterGraef | 0:d26c1b55cfca | 944 | NAKCICHAR(CI_CALLBACK, neg_cbcp, |
DieterGraef | 0:d26c1b55cfca | 945 | try.neg_cbcp = 0; |
DieterGraef | 0:d26c1b55cfca | 946 | ); |
DieterGraef | 0:d26c1b55cfca | 947 | |
DieterGraef | 0:d26c1b55cfca | 948 | /* |
DieterGraef | 0:d26c1b55cfca | 949 | * Check for a looped-back line. |
DieterGraef | 0:d26c1b55cfca | 950 | */ |
DieterGraef | 0:d26c1b55cfca | 951 | NAKCILONG(CI_MAGICNUMBER, neg_magicnumber, |
DieterGraef | 0:d26c1b55cfca | 952 | try.magicnumber = magic(); |
DieterGraef | 0:d26c1b55cfca | 953 | looped_back = 1; |
DieterGraef | 0:d26c1b55cfca | 954 | ); |
DieterGraef | 0:d26c1b55cfca | 955 | |
DieterGraef | 0:d26c1b55cfca | 956 | /* |
DieterGraef | 0:d26c1b55cfca | 957 | * Peer shouldn't send Nak for protocol compression or |
DieterGraef | 0:d26c1b55cfca | 958 | * address/control compression requests; they should send |
DieterGraef | 0:d26c1b55cfca | 959 | * a Reject instead. If they send a Nak, treat it as a Reject. |
DieterGraef | 0:d26c1b55cfca | 960 | */ |
DieterGraef | 0:d26c1b55cfca | 961 | NAKCIVOID(CI_PCOMPRESSION, neg_pcompression, |
DieterGraef | 0:d26c1b55cfca | 962 | try.neg_pcompression = 0; |
DieterGraef | 0:d26c1b55cfca | 963 | ); |
DieterGraef | 0:d26c1b55cfca | 964 | NAKCIVOID(CI_ACCOMPRESSION, neg_accompression, |
DieterGraef | 0:d26c1b55cfca | 965 | try.neg_accompression = 0; |
DieterGraef | 0:d26c1b55cfca | 966 | ); |
DieterGraef | 0:d26c1b55cfca | 967 | |
DieterGraef | 0:d26c1b55cfca | 968 | /* |
DieterGraef | 0:d26c1b55cfca | 969 | * There may be remaining CIs, if the peer is requesting negotiation |
DieterGraef | 0:d26c1b55cfca | 970 | * on an option that we didn't include in our request packet. |
DieterGraef | 0:d26c1b55cfca | 971 | * If we see an option that we requested, or one we've already seen |
DieterGraef | 0:d26c1b55cfca | 972 | * in this packet, then this packet is bad. |
DieterGraef | 0:d26c1b55cfca | 973 | * If we wanted to respond by starting to negotiate on the requested |
DieterGraef | 0:d26c1b55cfca | 974 | * option(s), we could, but we don't, because except for the |
DieterGraef | 0:d26c1b55cfca | 975 | * authentication type and quality protocol, if we are not negotiating |
DieterGraef | 0:d26c1b55cfca | 976 | * an option, it is because we were told not to. |
DieterGraef | 0:d26c1b55cfca | 977 | * For the authentication type, the Nak from the peer means |
DieterGraef | 0:d26c1b55cfca | 978 | * `let me authenticate myself with you' which is a bit pointless. |
DieterGraef | 0:d26c1b55cfca | 979 | * For the quality protocol, the Nak means `ask me to send you quality |
DieterGraef | 0:d26c1b55cfca | 980 | * reports', but if we didn't ask for them, we don't want them. |
DieterGraef | 0:d26c1b55cfca | 981 | * An option we don't recognize represents the peer asking to |
DieterGraef | 0:d26c1b55cfca | 982 | * negotiate some option we don't support, so ignore it. |
DieterGraef | 0:d26c1b55cfca | 983 | */ |
DieterGraef | 0:d26c1b55cfca | 984 | while (len > CILEN_VOID) { |
DieterGraef | 0:d26c1b55cfca | 985 | GETCHAR(citype, p); |
DieterGraef | 0:d26c1b55cfca | 986 | GETCHAR(cilen, p); |
DieterGraef | 0:d26c1b55cfca | 987 | if (cilen < CILEN_VOID || (len -= cilen) < 0) { |
DieterGraef | 0:d26c1b55cfca | 988 | goto bad; |
DieterGraef | 0:d26c1b55cfca | 989 | } |
DieterGraef | 0:d26c1b55cfca | 990 | next = p + cilen - 2; |
DieterGraef | 0:d26c1b55cfca | 991 | |
DieterGraef | 0:d26c1b55cfca | 992 | switch (citype) { |
DieterGraef | 0:d26c1b55cfca | 993 | case CI_MRU: |
DieterGraef | 0:d26c1b55cfca | 994 | if ((go->neg_mru && go->mru != PPP_DEFMRU) |
DieterGraef | 0:d26c1b55cfca | 995 | || no.neg_mru || cilen != CILEN_SHORT) { |
DieterGraef | 0:d26c1b55cfca | 996 | goto bad; |
DieterGraef | 0:d26c1b55cfca | 997 | } |
DieterGraef | 0:d26c1b55cfca | 998 | GETSHORT(cishort, p); |
DieterGraef | 0:d26c1b55cfca | 999 | if (cishort < PPP_DEFMRU) { |
DieterGraef | 0:d26c1b55cfca | 1000 | try.mru = cishort; |
DieterGraef | 0:d26c1b55cfca | 1001 | } |
DieterGraef | 0:d26c1b55cfca | 1002 | break; |
DieterGraef | 0:d26c1b55cfca | 1003 | case CI_ASYNCMAP: |
DieterGraef | 0:d26c1b55cfca | 1004 | if ((go->neg_asyncmap && go->asyncmap != 0xFFFFFFFFl) |
DieterGraef | 0:d26c1b55cfca | 1005 | || no.neg_asyncmap || cilen != CILEN_LONG) { |
DieterGraef | 0:d26c1b55cfca | 1006 | goto bad; |
DieterGraef | 0:d26c1b55cfca | 1007 | } |
DieterGraef | 0:d26c1b55cfca | 1008 | break; |
DieterGraef | 0:d26c1b55cfca | 1009 | case CI_AUTHTYPE: |
DieterGraef | 0:d26c1b55cfca | 1010 | if (go->neg_chap || no.neg_chap || go->neg_upap || no.neg_upap) { |
DieterGraef | 0:d26c1b55cfca | 1011 | goto bad; |
DieterGraef | 0:d26c1b55cfca | 1012 | } |
DieterGraef | 0:d26c1b55cfca | 1013 | break; |
DieterGraef | 0:d26c1b55cfca | 1014 | case CI_MAGICNUMBER: |
DieterGraef | 0:d26c1b55cfca | 1015 | if (go->neg_magicnumber || no.neg_magicnumber || |
DieterGraef | 0:d26c1b55cfca | 1016 | cilen != CILEN_LONG) { |
DieterGraef | 0:d26c1b55cfca | 1017 | goto bad; |
DieterGraef | 0:d26c1b55cfca | 1018 | } |
DieterGraef | 0:d26c1b55cfca | 1019 | break; |
DieterGraef | 0:d26c1b55cfca | 1020 | case CI_PCOMPRESSION: |
DieterGraef | 0:d26c1b55cfca | 1021 | if (go->neg_pcompression || no.neg_pcompression |
DieterGraef | 0:d26c1b55cfca | 1022 | || cilen != CILEN_VOID) { |
DieterGraef | 0:d26c1b55cfca | 1023 | goto bad; |
DieterGraef | 0:d26c1b55cfca | 1024 | } |
DieterGraef | 0:d26c1b55cfca | 1025 | break; |
DieterGraef | 0:d26c1b55cfca | 1026 | case CI_ACCOMPRESSION: |
DieterGraef | 0:d26c1b55cfca | 1027 | if (go->neg_accompression || no.neg_accompression |
DieterGraef | 0:d26c1b55cfca | 1028 | || cilen != CILEN_VOID) { |
DieterGraef | 0:d26c1b55cfca | 1029 | goto bad; |
DieterGraef | 0:d26c1b55cfca | 1030 | } |
DieterGraef | 0:d26c1b55cfca | 1031 | break; |
DieterGraef | 0:d26c1b55cfca | 1032 | case CI_QUALITY: |
DieterGraef | 0:d26c1b55cfca | 1033 | if (go->neg_lqr || no.neg_lqr || cilen != CILEN_LQR) { |
DieterGraef | 0:d26c1b55cfca | 1034 | goto bad; |
DieterGraef | 0:d26c1b55cfca | 1035 | } |
DieterGraef | 0:d26c1b55cfca | 1036 | break; |
DieterGraef | 0:d26c1b55cfca | 1037 | } |
DieterGraef | 0:d26c1b55cfca | 1038 | p = next; |
DieterGraef | 0:d26c1b55cfca | 1039 | } |
DieterGraef | 0:d26c1b55cfca | 1040 | |
DieterGraef | 0:d26c1b55cfca | 1041 | /* If there is still anything left, this packet is bad. */ |
DieterGraef | 0:d26c1b55cfca | 1042 | if (len != 0) { |
DieterGraef | 0:d26c1b55cfca | 1043 | goto bad; |
DieterGraef | 0:d26c1b55cfca | 1044 | } |
DieterGraef | 0:d26c1b55cfca | 1045 | |
DieterGraef | 0:d26c1b55cfca | 1046 | /* |
DieterGraef | 0:d26c1b55cfca | 1047 | * OK, the Nak is good. Now we can update state. |
DieterGraef | 0:d26c1b55cfca | 1048 | */ |
DieterGraef | 0:d26c1b55cfca | 1049 | if (f->state != LS_OPENED) { |
DieterGraef | 0:d26c1b55cfca | 1050 | if (looped_back) { |
DieterGraef | 0:d26c1b55cfca | 1051 | if (++try.numloops >= lcp_loopbackfail) { |
DieterGraef | 0:d26c1b55cfca | 1052 | LCPDEBUG(LOG_NOTICE, ("Serial line is looped back.\n")); |
DieterGraef | 0:d26c1b55cfca | 1053 | lcp_close(f->unit, "Loopback detected"); |
DieterGraef | 0:d26c1b55cfca | 1054 | } |
DieterGraef | 0:d26c1b55cfca | 1055 | } else { |
DieterGraef | 0:d26c1b55cfca | 1056 | try.numloops = 0; |
DieterGraef | 0:d26c1b55cfca | 1057 | } |
DieterGraef | 0:d26c1b55cfca | 1058 | *go = try; |
DieterGraef | 0:d26c1b55cfca | 1059 | } |
DieterGraef | 0:d26c1b55cfca | 1060 | |
DieterGraef | 0:d26c1b55cfca | 1061 | return 1; |
DieterGraef | 0:d26c1b55cfca | 1062 | |
DieterGraef | 0:d26c1b55cfca | 1063 | bad: |
DieterGraef | 0:d26c1b55cfca | 1064 | LCPDEBUG(LOG_WARNING, ("lcp_nakci: received bad Nak!\n")); |
DieterGraef | 0:d26c1b55cfca | 1065 | return 0; |
DieterGraef | 0:d26c1b55cfca | 1066 | } |
DieterGraef | 0:d26c1b55cfca | 1067 | |
DieterGraef | 0:d26c1b55cfca | 1068 | |
DieterGraef | 0:d26c1b55cfca | 1069 | /* |
DieterGraef | 0:d26c1b55cfca | 1070 | * lcp_rejci - Peer has Rejected some of our CIs. |
DieterGraef | 0:d26c1b55cfca | 1071 | * This should not modify any state if the Reject is bad |
DieterGraef | 0:d26c1b55cfca | 1072 | * or if LCP is in the LS_OPENED state. |
DieterGraef | 0:d26c1b55cfca | 1073 | * |
DieterGraef | 0:d26c1b55cfca | 1074 | * Returns: |
DieterGraef | 0:d26c1b55cfca | 1075 | * 0 - Reject was bad. |
DieterGraef | 0:d26c1b55cfca | 1076 | * 1 - Reject was good. |
DieterGraef | 0:d26c1b55cfca | 1077 | */ |
DieterGraef | 0:d26c1b55cfca | 1078 | static int |
DieterGraef | 0:d26c1b55cfca | 1079 | lcp_rejci(fsm *f, u_char *p, int len) |
DieterGraef | 0:d26c1b55cfca | 1080 | { |
DieterGraef | 0:d26c1b55cfca | 1081 | lcp_options *go = &lcp_gotoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 1082 | u_char cichar; |
DieterGraef | 0:d26c1b55cfca | 1083 | u_short cishort; |
DieterGraef | 0:d26c1b55cfca | 1084 | u32_t cilong; |
DieterGraef | 0:d26c1b55cfca | 1085 | lcp_options try; /* options to request next time */ |
DieterGraef | 0:d26c1b55cfca | 1086 | |
DieterGraef | 0:d26c1b55cfca | 1087 | try = *go; |
DieterGraef | 0:d26c1b55cfca | 1088 | |
DieterGraef | 0:d26c1b55cfca | 1089 | /* |
DieterGraef | 0:d26c1b55cfca | 1090 | * Any Rejected CIs must be in exactly the same order that we sent. |
DieterGraef | 0:d26c1b55cfca | 1091 | * Check packet length and CI length at each step. |
DieterGraef | 0:d26c1b55cfca | 1092 | * If we find any deviations, then this packet is bad. |
DieterGraef | 0:d26c1b55cfca | 1093 | */ |
DieterGraef | 0:d26c1b55cfca | 1094 | #define REJCIVOID(opt, neg) \ |
DieterGraef | 0:d26c1b55cfca | 1095 | if (go->neg && \ |
DieterGraef | 0:d26c1b55cfca | 1096 | len >= CILEN_VOID && \ |
DieterGraef | 0:d26c1b55cfca | 1097 | p[1] == CILEN_VOID && \ |
DieterGraef | 0:d26c1b55cfca | 1098 | p[0] == opt) { \ |
DieterGraef | 0:d26c1b55cfca | 1099 | len -= CILEN_VOID; \ |
DieterGraef | 0:d26c1b55cfca | 1100 | INCPTR(CILEN_VOID, p); \ |
DieterGraef | 0:d26c1b55cfca | 1101 | try.neg = 0; \ |
DieterGraef | 0:d26c1b55cfca | 1102 | LCPDEBUG(LOG_INFO, ("lcp_rejci: void opt %d rejected\n", opt)); \ |
DieterGraef | 0:d26c1b55cfca | 1103 | } |
DieterGraef | 0:d26c1b55cfca | 1104 | #define REJCISHORT(opt, neg, val) \ |
DieterGraef | 0:d26c1b55cfca | 1105 | if (go->neg && \ |
DieterGraef | 0:d26c1b55cfca | 1106 | len >= CILEN_SHORT && \ |
DieterGraef | 0:d26c1b55cfca | 1107 | p[1] == CILEN_SHORT && \ |
DieterGraef | 0:d26c1b55cfca | 1108 | p[0] == opt) { \ |
DieterGraef | 0:d26c1b55cfca | 1109 | len -= CILEN_SHORT; \ |
DieterGraef | 0:d26c1b55cfca | 1110 | INCPTR(2, p); \ |
DieterGraef | 0:d26c1b55cfca | 1111 | GETSHORT(cishort, p); \ |
DieterGraef | 0:d26c1b55cfca | 1112 | /* Check rejected value. */ \ |
DieterGraef | 0:d26c1b55cfca | 1113 | if (cishort != val) { \ |
DieterGraef | 0:d26c1b55cfca | 1114 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 1115 | } \ |
DieterGraef | 0:d26c1b55cfca | 1116 | try.neg = 0; \ |
DieterGraef | 0:d26c1b55cfca | 1117 | LCPDEBUG(LOG_INFO, ("lcp_rejci: short opt %d rejected\n", opt)); \ |
DieterGraef | 0:d26c1b55cfca | 1118 | } |
DieterGraef | 0:d26c1b55cfca | 1119 | #define REJCICHAP(opt, neg, val, digest) \ |
DieterGraef | 0:d26c1b55cfca | 1120 | if (go->neg && \ |
DieterGraef | 0:d26c1b55cfca | 1121 | len >= CILEN_CHAP && \ |
DieterGraef | 0:d26c1b55cfca | 1122 | p[1] == CILEN_CHAP && \ |
DieterGraef | 0:d26c1b55cfca | 1123 | p[0] == opt) { \ |
DieterGraef | 0:d26c1b55cfca | 1124 | len -= CILEN_CHAP; \ |
DieterGraef | 0:d26c1b55cfca | 1125 | INCPTR(2, p); \ |
DieterGraef | 0:d26c1b55cfca | 1126 | GETSHORT(cishort, p); \ |
DieterGraef | 0:d26c1b55cfca | 1127 | GETCHAR(cichar, p); \ |
DieterGraef | 0:d26c1b55cfca | 1128 | /* Check rejected value. */ \ |
DieterGraef | 0:d26c1b55cfca | 1129 | if (cishort != val || cichar != digest) { \ |
DieterGraef | 0:d26c1b55cfca | 1130 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 1131 | } \ |
DieterGraef | 0:d26c1b55cfca | 1132 | try.neg = 0; \ |
DieterGraef | 0:d26c1b55cfca | 1133 | try.neg_upap = 0; \ |
DieterGraef | 0:d26c1b55cfca | 1134 | LCPDEBUG(LOG_INFO, ("lcp_rejci: chap opt %d rejected\n", opt)); \ |
DieterGraef | 0:d26c1b55cfca | 1135 | } |
DieterGraef | 0:d26c1b55cfca | 1136 | #define REJCILONG(opt, neg, val) \ |
DieterGraef | 0:d26c1b55cfca | 1137 | if (go->neg && \ |
DieterGraef | 0:d26c1b55cfca | 1138 | len >= CILEN_LONG && \ |
DieterGraef | 0:d26c1b55cfca | 1139 | p[1] == CILEN_LONG && \ |
DieterGraef | 0:d26c1b55cfca | 1140 | p[0] == opt) { \ |
DieterGraef | 0:d26c1b55cfca | 1141 | len -= CILEN_LONG; \ |
DieterGraef | 0:d26c1b55cfca | 1142 | INCPTR(2, p); \ |
DieterGraef | 0:d26c1b55cfca | 1143 | GETLONG(cilong, p); \ |
DieterGraef | 0:d26c1b55cfca | 1144 | /* Check rejected value. */ \ |
DieterGraef | 0:d26c1b55cfca | 1145 | if (cilong != val) { \ |
DieterGraef | 0:d26c1b55cfca | 1146 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 1147 | } \ |
DieterGraef | 0:d26c1b55cfca | 1148 | try.neg = 0; \ |
DieterGraef | 0:d26c1b55cfca | 1149 | LCPDEBUG(LOG_INFO, ("lcp_rejci: long opt %d rejected\n", opt)); \ |
DieterGraef | 0:d26c1b55cfca | 1150 | } |
DieterGraef | 0:d26c1b55cfca | 1151 | #define REJCILQR(opt, neg, val) \ |
DieterGraef | 0:d26c1b55cfca | 1152 | if (go->neg && \ |
DieterGraef | 0:d26c1b55cfca | 1153 | len >= CILEN_LQR && \ |
DieterGraef | 0:d26c1b55cfca | 1154 | p[1] == CILEN_LQR && \ |
DieterGraef | 0:d26c1b55cfca | 1155 | p[0] == opt) { \ |
DieterGraef | 0:d26c1b55cfca | 1156 | len -= CILEN_LQR; \ |
DieterGraef | 0:d26c1b55cfca | 1157 | INCPTR(2, p); \ |
DieterGraef | 0:d26c1b55cfca | 1158 | GETSHORT(cishort, p); \ |
DieterGraef | 0:d26c1b55cfca | 1159 | GETLONG(cilong, p); \ |
DieterGraef | 0:d26c1b55cfca | 1160 | /* Check rejected value. */ \ |
DieterGraef | 0:d26c1b55cfca | 1161 | if (cishort != PPP_LQR || cilong != val) { \ |
DieterGraef | 0:d26c1b55cfca | 1162 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 1163 | } \ |
DieterGraef | 0:d26c1b55cfca | 1164 | try.neg = 0; \ |
DieterGraef | 0:d26c1b55cfca | 1165 | LCPDEBUG(LOG_INFO, ("lcp_rejci: LQR opt %d rejected\n", opt)); \ |
DieterGraef | 0:d26c1b55cfca | 1166 | } |
DieterGraef | 0:d26c1b55cfca | 1167 | #define REJCICBCP(opt, neg, val) \ |
DieterGraef | 0:d26c1b55cfca | 1168 | if (go->neg && \ |
DieterGraef | 0:d26c1b55cfca | 1169 | len >= CILEN_CBCP && \ |
DieterGraef | 0:d26c1b55cfca | 1170 | p[1] == CILEN_CBCP && \ |
DieterGraef | 0:d26c1b55cfca | 1171 | p[0] == opt) { \ |
DieterGraef | 0:d26c1b55cfca | 1172 | len -= CILEN_CBCP; \ |
DieterGraef | 0:d26c1b55cfca | 1173 | INCPTR(2, p); \ |
DieterGraef | 0:d26c1b55cfca | 1174 | GETCHAR(cichar, p); \ |
DieterGraef | 0:d26c1b55cfca | 1175 | /* Check rejected value. */ \ |
DieterGraef | 0:d26c1b55cfca | 1176 | if (cichar != val) { \ |
DieterGraef | 0:d26c1b55cfca | 1177 | goto bad; \ |
DieterGraef | 0:d26c1b55cfca | 1178 | } \ |
DieterGraef | 0:d26c1b55cfca | 1179 | try.neg = 0; \ |
DieterGraef | 0:d26c1b55cfca | 1180 | LCPDEBUG(LOG_INFO, ("lcp_rejci: Callback opt %d rejected\n", opt)); \ |
DieterGraef | 0:d26c1b55cfca | 1181 | } |
DieterGraef | 0:d26c1b55cfca | 1182 | |
DieterGraef | 0:d26c1b55cfca | 1183 | REJCISHORT(CI_MRU, neg_mru, go->mru); |
DieterGraef | 0:d26c1b55cfca | 1184 | REJCILONG(CI_ASYNCMAP, neg_asyncmap, go->asyncmap); |
DieterGraef | 0:d26c1b55cfca | 1185 | REJCICHAP(CI_AUTHTYPE, neg_chap, PPP_CHAP, go->chap_mdtype); |
DieterGraef | 0:d26c1b55cfca | 1186 | if (!go->neg_chap) { |
DieterGraef | 0:d26c1b55cfca | 1187 | REJCISHORT(CI_AUTHTYPE, neg_upap, PPP_PAP); |
DieterGraef | 0:d26c1b55cfca | 1188 | } |
DieterGraef | 0:d26c1b55cfca | 1189 | REJCILQR(CI_QUALITY, neg_lqr, go->lqr_period); |
DieterGraef | 0:d26c1b55cfca | 1190 | REJCICBCP(CI_CALLBACK, neg_cbcp, CBCP_OPT); |
DieterGraef | 0:d26c1b55cfca | 1191 | REJCILONG(CI_MAGICNUMBER, neg_magicnumber, go->magicnumber); |
DieterGraef | 0:d26c1b55cfca | 1192 | REJCIVOID(CI_PCOMPRESSION, neg_pcompression); |
DieterGraef | 0:d26c1b55cfca | 1193 | REJCIVOID(CI_ACCOMPRESSION, neg_accompression); |
DieterGraef | 0:d26c1b55cfca | 1194 | |
DieterGraef | 0:d26c1b55cfca | 1195 | /* |
DieterGraef | 0:d26c1b55cfca | 1196 | * If there are any remaining CIs, then this packet is bad. |
DieterGraef | 0:d26c1b55cfca | 1197 | */ |
DieterGraef | 0:d26c1b55cfca | 1198 | if (len != 0) { |
DieterGraef | 0:d26c1b55cfca | 1199 | goto bad; |
DieterGraef | 0:d26c1b55cfca | 1200 | } |
DieterGraef | 0:d26c1b55cfca | 1201 | /* |
DieterGraef | 0:d26c1b55cfca | 1202 | * Now we can update state. |
DieterGraef | 0:d26c1b55cfca | 1203 | */ |
DieterGraef | 0:d26c1b55cfca | 1204 | if (f->state != LS_OPENED) { |
DieterGraef | 0:d26c1b55cfca | 1205 | *go = try; |
DieterGraef | 0:d26c1b55cfca | 1206 | } |
DieterGraef | 0:d26c1b55cfca | 1207 | return 1; |
DieterGraef | 0:d26c1b55cfca | 1208 | |
DieterGraef | 0:d26c1b55cfca | 1209 | bad: |
DieterGraef | 0:d26c1b55cfca | 1210 | LCPDEBUG(LOG_WARNING, ("lcp_rejci: received bad Reject!\n")); |
DieterGraef | 0:d26c1b55cfca | 1211 | return 0; |
DieterGraef | 0:d26c1b55cfca | 1212 | } |
DieterGraef | 0:d26c1b55cfca | 1213 | |
DieterGraef | 0:d26c1b55cfca | 1214 | |
DieterGraef | 0:d26c1b55cfca | 1215 | /* |
DieterGraef | 0:d26c1b55cfca | 1216 | * lcp_reqci - Check the peer's requested CIs and send appropriate response. |
DieterGraef | 0:d26c1b55cfca | 1217 | * |
DieterGraef | 0:d26c1b55cfca | 1218 | * Returns: CONFACK, CONFNAK or CONFREJ and input packet modified |
DieterGraef | 0:d26c1b55cfca | 1219 | * appropriately. If reject_if_disagree is non-zero, doesn't return |
DieterGraef | 0:d26c1b55cfca | 1220 | * CONFNAK; returns CONFREJ if it can't return CONFACK. |
DieterGraef | 0:d26c1b55cfca | 1221 | */ |
DieterGraef | 0:d26c1b55cfca | 1222 | static int |
DieterGraef | 0:d26c1b55cfca | 1223 | lcp_reqci(fsm *f, |
DieterGraef | 0:d26c1b55cfca | 1224 | u_char *inp, /* Requested CIs */ |
DieterGraef | 0:d26c1b55cfca | 1225 | int *lenp, /* Length of requested CIs */ |
DieterGraef | 0:d26c1b55cfca | 1226 | int reject_if_disagree) |
DieterGraef | 0:d26c1b55cfca | 1227 | { |
DieterGraef | 0:d26c1b55cfca | 1228 | lcp_options *go = &lcp_gotoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 1229 | lcp_options *ho = &lcp_hisoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 1230 | lcp_options *ao = &lcp_allowoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 1231 | u_char *cip, *next; /* Pointer to current and next CIs */ |
DieterGraef | 0:d26c1b55cfca | 1232 | int cilen, citype; /* Parsed len, type */ |
DieterGraef | 0:d26c1b55cfca | 1233 | u_char cichar; /* Parsed char value */ |
DieterGraef | 0:d26c1b55cfca | 1234 | u_short cishort; /* Parsed short value */ |
DieterGraef | 0:d26c1b55cfca | 1235 | u32_t cilong; /* Parse long value */ |
DieterGraef | 0:d26c1b55cfca | 1236 | int rc = CONFACK; /* Final packet return code */ |
DieterGraef | 0:d26c1b55cfca | 1237 | int orc; /* Individual option return code */ |
DieterGraef | 0:d26c1b55cfca | 1238 | u_char *p; /* Pointer to next char to parse */ |
DieterGraef | 0:d26c1b55cfca | 1239 | u_char *rejp; /* Pointer to next char in reject frame */ |
DieterGraef | 0:d26c1b55cfca | 1240 | u_char *nakp; /* Pointer to next char in Nak frame */ |
DieterGraef | 0:d26c1b55cfca | 1241 | int l = *lenp; /* Length left */ |
DieterGraef | 0:d26c1b55cfca | 1242 | #if TRACELCP > 0 |
DieterGraef | 0:d26c1b55cfca | 1243 | char traceBuf[80]; |
DieterGraef | 0:d26c1b55cfca | 1244 | size_t traceNdx = 0; |
DieterGraef | 0:d26c1b55cfca | 1245 | #endif |
DieterGraef | 0:d26c1b55cfca | 1246 | |
DieterGraef | 0:d26c1b55cfca | 1247 | /* |
DieterGraef | 0:d26c1b55cfca | 1248 | * Reset all his options. |
DieterGraef | 0:d26c1b55cfca | 1249 | */ |
DieterGraef | 0:d26c1b55cfca | 1250 | BZERO(ho, sizeof(*ho)); |
DieterGraef | 0:d26c1b55cfca | 1251 | |
DieterGraef | 0:d26c1b55cfca | 1252 | /* |
DieterGraef | 0:d26c1b55cfca | 1253 | * Process all his options. |
DieterGraef | 0:d26c1b55cfca | 1254 | */ |
DieterGraef | 0:d26c1b55cfca | 1255 | next = inp; |
DieterGraef | 0:d26c1b55cfca | 1256 | nakp = nak_buffer; |
DieterGraef | 0:d26c1b55cfca | 1257 | rejp = inp; |
DieterGraef | 0:d26c1b55cfca | 1258 | while (l) { |
DieterGraef | 0:d26c1b55cfca | 1259 | orc = CONFACK; /* Assume success */ |
DieterGraef | 0:d26c1b55cfca | 1260 | cip = p = next; /* Remember begining of CI */ |
DieterGraef | 0:d26c1b55cfca | 1261 | if (l < 2 || /* Not enough data for CI header or */ |
DieterGraef | 0:d26c1b55cfca | 1262 | p[1] < 2 || /* CI length too small or */ |
DieterGraef | 0:d26c1b55cfca | 1263 | p[1] > l) { /* CI length too big? */ |
DieterGraef | 0:d26c1b55cfca | 1264 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: bad CI length!\n")); |
DieterGraef | 0:d26c1b55cfca | 1265 | orc = CONFREJ; /* Reject bad CI */ |
DieterGraef | 0:d26c1b55cfca | 1266 | cilen = l; /* Reject till end of packet */ |
DieterGraef | 0:d26c1b55cfca | 1267 | l = 0; /* Don't loop again */ |
DieterGraef | 0:d26c1b55cfca | 1268 | citype = 0; |
DieterGraef | 0:d26c1b55cfca | 1269 | goto endswitch; |
DieterGraef | 0:d26c1b55cfca | 1270 | } |
DieterGraef | 0:d26c1b55cfca | 1271 | GETCHAR(citype, p); /* Parse CI type */ |
DieterGraef | 0:d26c1b55cfca | 1272 | GETCHAR(cilen, p); /* Parse CI length */ |
DieterGraef | 0:d26c1b55cfca | 1273 | l -= cilen; /* Adjust remaining length */ |
DieterGraef | 0:d26c1b55cfca | 1274 | next += cilen; /* Step to next CI */ |
DieterGraef | 0:d26c1b55cfca | 1275 | |
DieterGraef | 0:d26c1b55cfca | 1276 | switch (citype) { /* Check CI type */ |
DieterGraef | 0:d26c1b55cfca | 1277 | case CI_MRU: |
DieterGraef | 0:d26c1b55cfca | 1278 | if (!ao->neg_mru) { /* Allow option? */ |
DieterGraef | 0:d26c1b55cfca | 1279 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - not allowed\n")); |
DieterGraef | 0:d26c1b55cfca | 1280 | orc = CONFREJ; /* Reject CI */ |
DieterGraef | 0:d26c1b55cfca | 1281 | break; |
DieterGraef | 0:d26c1b55cfca | 1282 | } else if (cilen != CILEN_SHORT) { /* Check CI length */ |
DieterGraef | 0:d26c1b55cfca | 1283 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject MRU - bad length\n")); |
DieterGraef | 0:d26c1b55cfca | 1284 | orc = CONFREJ; /* Reject CI */ |
DieterGraef | 0:d26c1b55cfca | 1285 | break; |
DieterGraef | 0:d26c1b55cfca | 1286 | } |
DieterGraef | 0:d26c1b55cfca | 1287 | GETSHORT(cishort, p); /* Parse MRU */ |
DieterGraef | 0:d26c1b55cfca | 1288 | |
DieterGraef | 0:d26c1b55cfca | 1289 | /* |
DieterGraef | 0:d26c1b55cfca | 1290 | * He must be able to receive at least our minimum. |
DieterGraef | 0:d26c1b55cfca | 1291 | * No need to check a maximum. If he sends a large number, |
DieterGraef | 0:d26c1b55cfca | 1292 | * we'll just ignore it. |
DieterGraef | 0:d26c1b55cfca | 1293 | */ |
DieterGraef | 0:d26c1b55cfca | 1294 | if (cishort < PPP_MINMRU) { |
DieterGraef | 0:d26c1b55cfca | 1295 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak - MRU too small\n")); |
DieterGraef | 0:d26c1b55cfca | 1296 | orc = CONFNAK; /* Nak CI */ |
DieterGraef | 0:d26c1b55cfca | 1297 | PUTCHAR(CI_MRU, nakp); |
DieterGraef | 0:d26c1b55cfca | 1298 | PUTCHAR(CILEN_SHORT, nakp); |
DieterGraef | 0:d26c1b55cfca | 1299 | PUTSHORT(PPP_MINMRU, nakp); /* Give him a hint */ |
DieterGraef | 0:d26c1b55cfca | 1300 | break; |
DieterGraef | 0:d26c1b55cfca | 1301 | } |
DieterGraef | 0:d26c1b55cfca | 1302 | ho->neg_mru = 1; /* Remember he sent MRU */ |
DieterGraef | 0:d26c1b55cfca | 1303 | ho->mru = cishort; /* And remember value */ |
DieterGraef | 0:d26c1b55cfca | 1304 | #if TRACELCP > 0 |
DieterGraef | 0:d26c1b55cfca | 1305 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MRU %d", cishort); |
DieterGraef | 0:d26c1b55cfca | 1306 | traceNdx = strlen(traceBuf); |
DieterGraef | 0:d26c1b55cfca | 1307 | #endif |
DieterGraef | 0:d26c1b55cfca | 1308 | break; |
DieterGraef | 0:d26c1b55cfca | 1309 | |
DieterGraef | 0:d26c1b55cfca | 1310 | case CI_ASYNCMAP: |
DieterGraef | 0:d26c1b55cfca | 1311 | if (!ao->neg_asyncmap) { |
DieterGraef | 0:d26c1b55cfca | 1312 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP not allowed\n")); |
DieterGraef | 0:d26c1b55cfca | 1313 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1314 | break; |
DieterGraef | 0:d26c1b55cfca | 1315 | } else if (cilen != CILEN_LONG) { |
DieterGraef | 0:d26c1b55cfca | 1316 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject ASYNCMAP bad length\n")); |
DieterGraef | 0:d26c1b55cfca | 1317 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1318 | break; |
DieterGraef | 0:d26c1b55cfca | 1319 | } |
DieterGraef | 0:d26c1b55cfca | 1320 | GETLONG(cilong, p); |
DieterGraef | 0:d26c1b55cfca | 1321 | |
DieterGraef | 0:d26c1b55cfca | 1322 | /* |
DieterGraef | 0:d26c1b55cfca | 1323 | * Asyncmap must have set at least the bits |
DieterGraef | 0:d26c1b55cfca | 1324 | * which are set in lcp_allowoptions[unit].asyncmap. |
DieterGraef | 0:d26c1b55cfca | 1325 | */ |
DieterGraef | 0:d26c1b55cfca | 1326 | if ((ao->asyncmap & ~cilong) != 0) { |
DieterGraef | 0:d26c1b55cfca | 1327 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Nak ASYNCMAP %lX missing %lX\n", |
DieterGraef | 0:d26c1b55cfca | 1328 | cilong, ao->asyncmap)); |
DieterGraef | 0:d26c1b55cfca | 1329 | orc = CONFNAK; |
DieterGraef | 0:d26c1b55cfca | 1330 | PUTCHAR(CI_ASYNCMAP, nakp); |
DieterGraef | 0:d26c1b55cfca | 1331 | PUTCHAR(CILEN_LONG, nakp); |
DieterGraef | 0:d26c1b55cfca | 1332 | PUTLONG(ao->asyncmap | cilong, nakp); |
DieterGraef | 0:d26c1b55cfca | 1333 | break; |
DieterGraef | 0:d26c1b55cfca | 1334 | } |
DieterGraef | 0:d26c1b55cfca | 1335 | ho->neg_asyncmap = 1; |
DieterGraef | 0:d26c1b55cfca | 1336 | ho->asyncmap = cilong; |
DieterGraef | 0:d26c1b55cfca | 1337 | #if TRACELCP > 0 |
DieterGraef | 0:d26c1b55cfca | 1338 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ASYNCMAP=%lX", cilong); |
DieterGraef | 0:d26c1b55cfca | 1339 | traceNdx = strlen(traceBuf); |
DieterGraef | 0:d26c1b55cfca | 1340 | #endif |
DieterGraef | 0:d26c1b55cfca | 1341 | break; |
DieterGraef | 0:d26c1b55cfca | 1342 | |
DieterGraef | 0:d26c1b55cfca | 1343 | case CI_AUTHTYPE: |
DieterGraef | 0:d26c1b55cfca | 1344 | if (cilen < CILEN_SHORT) { |
DieterGraef | 0:d26c1b55cfca | 1345 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE missing arg\n")); |
DieterGraef | 0:d26c1b55cfca | 1346 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1347 | break; |
DieterGraef | 0:d26c1b55cfca | 1348 | } else if (!(ao->neg_upap || ao->neg_chap)) { |
DieterGraef | 0:d26c1b55cfca | 1349 | /* |
DieterGraef | 0:d26c1b55cfca | 1350 | * Reject the option if we're not willing to authenticate. |
DieterGraef | 0:d26c1b55cfca | 1351 | */ |
DieterGraef | 0:d26c1b55cfca | 1352 | LCPDEBUG(LOG_INFO, ("lcp_reqci: Reject AUTHTYPE not allowed\n")); |
DieterGraef | 0:d26c1b55cfca | 1353 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1354 | break; |
DieterGraef | 0:d26c1b55cfca | 1355 | } |
DieterGraef | 0:d26c1b55cfca | 1356 | GETSHORT(cishort, p); |
DieterGraef | 0:d26c1b55cfca | 1357 | |
DieterGraef | 0:d26c1b55cfca | 1358 | /* |
DieterGraef | 0:d26c1b55cfca | 1359 | * Authtype must be UPAP or CHAP. |
DieterGraef | 0:d26c1b55cfca | 1360 | * |
DieterGraef | 0:d26c1b55cfca | 1361 | * Note: if both ao->neg_upap and ao->neg_chap are set, |
DieterGraef | 0:d26c1b55cfca | 1362 | * and the peer sends a Configure-Request with two |
DieterGraef | 0:d26c1b55cfca | 1363 | * authenticate-protocol requests, one for CHAP and one |
DieterGraef | 0:d26c1b55cfca | 1364 | * for UPAP, then we will reject the second request. |
DieterGraef | 0:d26c1b55cfca | 1365 | * Whether we end up doing CHAP or UPAP depends then on |
DieterGraef | 0:d26c1b55cfca | 1366 | * the ordering of the CIs in the peer's Configure-Request. |
DieterGraef | 0:d26c1b55cfca | 1367 | */ |
DieterGraef | 0:d26c1b55cfca | 1368 | |
DieterGraef | 0:d26c1b55cfca | 1369 | if (cishort == PPP_PAP) { |
DieterGraef | 0:d26c1b55cfca | 1370 | if (ho->neg_chap) { /* we've already accepted CHAP */ |
DieterGraef | 0:d26c1b55cfca | 1371 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP already accepted\n")); |
DieterGraef | 0:d26c1b55cfca | 1372 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1373 | break; |
DieterGraef | 0:d26c1b55cfca | 1374 | } else if (cilen != CILEN_SHORT) { |
DieterGraef | 0:d26c1b55cfca | 1375 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE PAP bad len\n")); |
DieterGraef | 0:d26c1b55cfca | 1376 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1377 | break; |
DieterGraef | 0:d26c1b55cfca | 1378 | } |
DieterGraef | 0:d26c1b55cfca | 1379 | if (!ao->neg_upap) { /* we don't want to do PAP */ |
DieterGraef | 0:d26c1b55cfca | 1380 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE PAP not allowed\n")); |
DieterGraef | 0:d26c1b55cfca | 1381 | orc = CONFNAK; /* NAK it and suggest CHAP */ |
DieterGraef | 0:d26c1b55cfca | 1382 | PUTCHAR(CI_AUTHTYPE, nakp); |
DieterGraef | 0:d26c1b55cfca | 1383 | PUTCHAR(CILEN_CHAP, nakp); |
DieterGraef | 0:d26c1b55cfca | 1384 | PUTSHORT(PPP_CHAP, nakp); |
DieterGraef | 0:d26c1b55cfca | 1385 | PUTCHAR(ao->chap_mdtype, nakp); |
DieterGraef | 0:d26c1b55cfca | 1386 | break; |
DieterGraef | 0:d26c1b55cfca | 1387 | } |
DieterGraef | 0:d26c1b55cfca | 1388 | ho->neg_upap = 1; |
DieterGraef | 0:d26c1b55cfca | 1389 | #if TRACELCP > 0 |
DieterGraef | 0:d26c1b55cfca | 1390 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PAP (%X)", cishort); |
DieterGraef | 0:d26c1b55cfca | 1391 | traceNdx = strlen(traceBuf); |
DieterGraef | 0:d26c1b55cfca | 1392 | #endif |
DieterGraef | 0:d26c1b55cfca | 1393 | break; |
DieterGraef | 0:d26c1b55cfca | 1394 | } |
DieterGraef | 0:d26c1b55cfca | 1395 | if (cishort == PPP_CHAP) { |
DieterGraef | 0:d26c1b55cfca | 1396 | if (ho->neg_upap) { /* we've already accepted PAP */ |
DieterGraef | 0:d26c1b55cfca | 1397 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP accepted PAP\n")); |
DieterGraef | 0:d26c1b55cfca | 1398 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1399 | break; |
DieterGraef | 0:d26c1b55cfca | 1400 | } else if (cilen != CILEN_CHAP) { |
DieterGraef | 0:d26c1b55cfca | 1401 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Reject AUTHTYPE CHAP bad len\n")); |
DieterGraef | 0:d26c1b55cfca | 1402 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1403 | break; |
DieterGraef | 0:d26c1b55cfca | 1404 | } |
DieterGraef | 0:d26c1b55cfca | 1405 | if (!ao->neg_chap) { /* we don't want to do CHAP */ |
DieterGraef | 0:d26c1b55cfca | 1406 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP not allowed\n")); |
DieterGraef | 0:d26c1b55cfca | 1407 | orc = CONFNAK; /* NAK it and suggest PAP */ |
DieterGraef | 0:d26c1b55cfca | 1408 | PUTCHAR(CI_AUTHTYPE, nakp); |
DieterGraef | 0:d26c1b55cfca | 1409 | PUTCHAR(CILEN_SHORT, nakp); |
DieterGraef | 0:d26c1b55cfca | 1410 | PUTSHORT(PPP_PAP, nakp); |
DieterGraef | 0:d26c1b55cfca | 1411 | break; |
DieterGraef | 0:d26c1b55cfca | 1412 | } |
DieterGraef | 0:d26c1b55cfca | 1413 | GETCHAR(cichar, p); /* get digest type*/ |
DieterGraef | 0:d26c1b55cfca | 1414 | if (cichar != CHAP_DIGEST_MD5 |
DieterGraef | 0:d26c1b55cfca | 1415 | #if MSCHAP_SUPPORT |
DieterGraef | 0:d26c1b55cfca | 1416 | && cichar != CHAP_MICROSOFT |
DieterGraef | 0:d26c1b55cfca | 1417 | #endif |
DieterGraef | 0:d26c1b55cfca | 1418 | ) { |
DieterGraef | 0:d26c1b55cfca | 1419 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE CHAP digest=%d\n", (int)cichar)); |
DieterGraef | 0:d26c1b55cfca | 1420 | orc = CONFNAK; |
DieterGraef | 0:d26c1b55cfca | 1421 | PUTCHAR(CI_AUTHTYPE, nakp); |
DieterGraef | 0:d26c1b55cfca | 1422 | PUTCHAR(CILEN_CHAP, nakp); |
DieterGraef | 0:d26c1b55cfca | 1423 | PUTSHORT(PPP_CHAP, nakp); |
DieterGraef | 0:d26c1b55cfca | 1424 | PUTCHAR(ao->chap_mdtype, nakp); |
DieterGraef | 0:d26c1b55cfca | 1425 | break; |
DieterGraef | 0:d26c1b55cfca | 1426 | } |
DieterGraef | 0:d26c1b55cfca | 1427 | #if TRACELCP > 0 |
DieterGraef | 0:d26c1b55cfca | 1428 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CHAP %X,%d", cishort, (int)cichar); |
DieterGraef | 0:d26c1b55cfca | 1429 | traceNdx = strlen(traceBuf); |
DieterGraef | 0:d26c1b55cfca | 1430 | #endif |
DieterGraef | 0:d26c1b55cfca | 1431 | ho->chap_mdtype = cichar; /* save md type */ |
DieterGraef | 0:d26c1b55cfca | 1432 | ho->neg_chap = 1; |
DieterGraef | 0:d26c1b55cfca | 1433 | break; |
DieterGraef | 0:d26c1b55cfca | 1434 | } |
DieterGraef | 0:d26c1b55cfca | 1435 | |
DieterGraef | 0:d26c1b55cfca | 1436 | /* |
DieterGraef | 0:d26c1b55cfca | 1437 | * We don't recognize the protocol they're asking for. |
DieterGraef | 0:d26c1b55cfca | 1438 | * Nak it with something we're willing to do. |
DieterGraef | 0:d26c1b55cfca | 1439 | * (At this point we know ao->neg_upap || ao->neg_chap.) |
DieterGraef | 0:d26c1b55cfca | 1440 | */ |
DieterGraef | 0:d26c1b55cfca | 1441 | orc = CONFNAK; |
DieterGraef | 0:d26c1b55cfca | 1442 | PUTCHAR(CI_AUTHTYPE, nakp); |
DieterGraef | 0:d26c1b55cfca | 1443 | if (ao->neg_chap) { |
DieterGraef | 0:d26c1b55cfca | 1444 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req CHAP\n", cishort)); |
DieterGraef | 0:d26c1b55cfca | 1445 | PUTCHAR(CILEN_CHAP, nakp); |
DieterGraef | 0:d26c1b55cfca | 1446 | PUTSHORT(PPP_CHAP, nakp); |
DieterGraef | 0:d26c1b55cfca | 1447 | PUTCHAR(ao->chap_mdtype, nakp); |
DieterGraef | 0:d26c1b55cfca | 1448 | } else { |
DieterGraef | 0:d26c1b55cfca | 1449 | LCPDEBUG(LOG_WARNING, ("lcp_reqci: Nak AUTHTYPE %d req PAP\n", cishort)); |
DieterGraef | 0:d26c1b55cfca | 1450 | PUTCHAR(CILEN_SHORT, nakp); |
DieterGraef | 0:d26c1b55cfca | 1451 | PUTSHORT(PPP_PAP, nakp); |
DieterGraef | 0:d26c1b55cfca | 1452 | } |
DieterGraef | 0:d26c1b55cfca | 1453 | break; |
DieterGraef | 0:d26c1b55cfca | 1454 | |
DieterGraef | 0:d26c1b55cfca | 1455 | case CI_QUALITY: |
DieterGraef | 0:d26c1b55cfca | 1456 | GETSHORT(cishort, p); |
DieterGraef | 0:d26c1b55cfca | 1457 | GETLONG(cilong, p); |
DieterGraef | 0:d26c1b55cfca | 1458 | #if TRACELCP > 0 |
DieterGraef | 0:d26c1b55cfca | 1459 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " QUALITY (%x %x)", cishort, (unsigned int) cilong); |
DieterGraef | 0:d26c1b55cfca | 1460 | traceNdx = strlen(traceBuf); |
DieterGraef | 0:d26c1b55cfca | 1461 | #endif |
DieterGraef | 0:d26c1b55cfca | 1462 | |
DieterGraef | 0:d26c1b55cfca | 1463 | if (!ao->neg_lqr || |
DieterGraef | 0:d26c1b55cfca | 1464 | cilen != CILEN_LQR) { |
DieterGraef | 0:d26c1b55cfca | 1465 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1466 | break; |
DieterGraef | 0:d26c1b55cfca | 1467 | } |
DieterGraef | 0:d26c1b55cfca | 1468 | |
DieterGraef | 0:d26c1b55cfca | 1469 | /* |
DieterGraef | 0:d26c1b55cfca | 1470 | * Check the protocol and the reporting period. |
DieterGraef | 0:d26c1b55cfca | 1471 | * XXX When should we Nak this, and what with? |
DieterGraef | 0:d26c1b55cfca | 1472 | */ |
DieterGraef | 0:d26c1b55cfca | 1473 | if (cishort != PPP_LQR) { |
DieterGraef | 0:d26c1b55cfca | 1474 | orc = CONFNAK; |
DieterGraef | 0:d26c1b55cfca | 1475 | PUTCHAR(CI_QUALITY, nakp); |
DieterGraef | 0:d26c1b55cfca | 1476 | PUTCHAR(CILEN_LQR, nakp); |
DieterGraef | 0:d26c1b55cfca | 1477 | PUTSHORT(PPP_LQR, nakp); |
DieterGraef | 0:d26c1b55cfca | 1478 | PUTLONG(ao->lqr_period, nakp); |
DieterGraef | 0:d26c1b55cfca | 1479 | break; |
DieterGraef | 0:d26c1b55cfca | 1480 | } |
DieterGraef | 0:d26c1b55cfca | 1481 | break; |
DieterGraef | 0:d26c1b55cfca | 1482 | |
DieterGraef | 0:d26c1b55cfca | 1483 | case CI_MAGICNUMBER: |
DieterGraef | 0:d26c1b55cfca | 1484 | if (!(ao->neg_magicnumber || go->neg_magicnumber) || |
DieterGraef | 0:d26c1b55cfca | 1485 | cilen != CILEN_LONG) { |
DieterGraef | 0:d26c1b55cfca | 1486 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1487 | break; |
DieterGraef | 0:d26c1b55cfca | 1488 | } |
DieterGraef | 0:d26c1b55cfca | 1489 | GETLONG(cilong, p); |
DieterGraef | 0:d26c1b55cfca | 1490 | #if TRACELCP > 0 |
DieterGraef | 0:d26c1b55cfca | 1491 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " MAGICNUMBER (%lX)", cilong); |
DieterGraef | 0:d26c1b55cfca | 1492 | traceNdx = strlen(traceBuf); |
DieterGraef | 0:d26c1b55cfca | 1493 | #endif |
DieterGraef | 0:d26c1b55cfca | 1494 | |
DieterGraef | 0:d26c1b55cfca | 1495 | /* |
DieterGraef | 0:d26c1b55cfca | 1496 | * He must have a different magic number. |
DieterGraef | 0:d26c1b55cfca | 1497 | */ |
DieterGraef | 0:d26c1b55cfca | 1498 | if (go->neg_magicnumber && |
DieterGraef | 0:d26c1b55cfca | 1499 | cilong == go->magicnumber) { |
DieterGraef | 0:d26c1b55cfca | 1500 | cilong = magic(); /* Don't put magic() inside macro! */ |
DieterGraef | 0:d26c1b55cfca | 1501 | orc = CONFNAK; |
DieterGraef | 0:d26c1b55cfca | 1502 | PUTCHAR(CI_MAGICNUMBER, nakp); |
DieterGraef | 0:d26c1b55cfca | 1503 | PUTCHAR(CILEN_LONG, nakp); |
DieterGraef | 0:d26c1b55cfca | 1504 | PUTLONG(cilong, nakp); |
DieterGraef | 0:d26c1b55cfca | 1505 | break; |
DieterGraef | 0:d26c1b55cfca | 1506 | } |
DieterGraef | 0:d26c1b55cfca | 1507 | ho->neg_magicnumber = 1; |
DieterGraef | 0:d26c1b55cfca | 1508 | ho->magicnumber = cilong; |
DieterGraef | 0:d26c1b55cfca | 1509 | break; |
DieterGraef | 0:d26c1b55cfca | 1510 | |
DieterGraef | 0:d26c1b55cfca | 1511 | |
DieterGraef | 0:d26c1b55cfca | 1512 | case CI_PCOMPRESSION: |
DieterGraef | 0:d26c1b55cfca | 1513 | #if TRACELCP > 0 |
DieterGraef | 0:d26c1b55cfca | 1514 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " PCOMPRESSION"); |
DieterGraef | 0:d26c1b55cfca | 1515 | traceNdx = strlen(traceBuf); |
DieterGraef | 0:d26c1b55cfca | 1516 | #endif |
DieterGraef | 0:d26c1b55cfca | 1517 | if (!ao->neg_pcompression || |
DieterGraef | 0:d26c1b55cfca | 1518 | cilen != CILEN_VOID) { |
DieterGraef | 0:d26c1b55cfca | 1519 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1520 | break; |
DieterGraef | 0:d26c1b55cfca | 1521 | } |
DieterGraef | 0:d26c1b55cfca | 1522 | ho->neg_pcompression = 1; |
DieterGraef | 0:d26c1b55cfca | 1523 | break; |
DieterGraef | 0:d26c1b55cfca | 1524 | |
DieterGraef | 0:d26c1b55cfca | 1525 | case CI_ACCOMPRESSION: |
DieterGraef | 0:d26c1b55cfca | 1526 | #if TRACELCP > 0 |
DieterGraef | 0:d26c1b55cfca | 1527 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " ACCOMPRESSION"); |
DieterGraef | 0:d26c1b55cfca | 1528 | traceNdx = strlen(traceBuf); |
DieterGraef | 0:d26c1b55cfca | 1529 | #endif |
DieterGraef | 0:d26c1b55cfca | 1530 | if (!ao->neg_accompression || |
DieterGraef | 0:d26c1b55cfca | 1531 | cilen != CILEN_VOID) { |
DieterGraef | 0:d26c1b55cfca | 1532 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1533 | break; |
DieterGraef | 0:d26c1b55cfca | 1534 | } |
DieterGraef | 0:d26c1b55cfca | 1535 | ho->neg_accompression = 1; |
DieterGraef | 0:d26c1b55cfca | 1536 | break; |
DieterGraef | 0:d26c1b55cfca | 1537 | |
DieterGraef | 0:d26c1b55cfca | 1538 | case CI_MRRU: |
DieterGraef | 0:d26c1b55cfca | 1539 | #if TRACELCP > 0 |
DieterGraef | 0:d26c1b55cfca | 1540 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_MRRU"); |
DieterGraef | 0:d26c1b55cfca | 1541 | traceNdx = strlen(traceBuf); |
DieterGraef | 0:d26c1b55cfca | 1542 | #endif |
DieterGraef | 0:d26c1b55cfca | 1543 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1544 | break; |
DieterGraef | 0:d26c1b55cfca | 1545 | |
DieterGraef | 0:d26c1b55cfca | 1546 | case CI_SSNHF: |
DieterGraef | 0:d26c1b55cfca | 1547 | #if TRACELCP > 0 |
DieterGraef | 0:d26c1b55cfca | 1548 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_SSNHF"); |
DieterGraef | 0:d26c1b55cfca | 1549 | traceNdx = strlen(traceBuf); |
DieterGraef | 0:d26c1b55cfca | 1550 | #endif |
DieterGraef | 0:d26c1b55cfca | 1551 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1552 | break; |
DieterGraef | 0:d26c1b55cfca | 1553 | |
DieterGraef | 0:d26c1b55cfca | 1554 | case CI_EPDISC: |
DieterGraef | 0:d26c1b55cfca | 1555 | #if TRACELCP > 0 |
DieterGraef | 0:d26c1b55cfca | 1556 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " CI_EPDISC"); |
DieterGraef | 0:d26c1b55cfca | 1557 | traceNdx = strlen(traceBuf); |
DieterGraef | 0:d26c1b55cfca | 1558 | #endif |
DieterGraef | 0:d26c1b55cfca | 1559 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1560 | break; |
DieterGraef | 0:d26c1b55cfca | 1561 | |
DieterGraef | 0:d26c1b55cfca | 1562 | default: |
DieterGraef | 0:d26c1b55cfca | 1563 | #if TRACELCP |
DieterGraef | 0:d26c1b55cfca | 1564 | snprintf(&traceBuf[traceNdx], sizeof(traceBuf), " unknown %d", citype); |
DieterGraef | 0:d26c1b55cfca | 1565 | traceNdx = strlen(traceBuf); |
DieterGraef | 0:d26c1b55cfca | 1566 | #endif |
DieterGraef | 0:d26c1b55cfca | 1567 | orc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1568 | break; |
DieterGraef | 0:d26c1b55cfca | 1569 | } |
DieterGraef | 0:d26c1b55cfca | 1570 | |
DieterGraef | 0:d26c1b55cfca | 1571 | endswitch: |
DieterGraef | 0:d26c1b55cfca | 1572 | #if TRACELCP |
DieterGraef | 0:d26c1b55cfca | 1573 | if (traceNdx >= 80 - 32) { |
DieterGraef | 0:d26c1b55cfca | 1574 | LCPDEBUG(LOG_INFO, ("lcp_reqci: rcvd%s\n", traceBuf)); |
DieterGraef | 0:d26c1b55cfca | 1575 | traceNdx = 0; |
DieterGraef | 0:d26c1b55cfca | 1576 | } |
DieterGraef | 0:d26c1b55cfca | 1577 | #endif |
DieterGraef | 0:d26c1b55cfca | 1578 | if (orc == CONFACK && /* Good CI */ |
DieterGraef | 0:d26c1b55cfca | 1579 | rc != CONFACK) { /* but prior CI wasnt? */ |
DieterGraef | 0:d26c1b55cfca | 1580 | continue; /* Don't send this one */ |
DieterGraef | 0:d26c1b55cfca | 1581 | } |
DieterGraef | 0:d26c1b55cfca | 1582 | |
DieterGraef | 0:d26c1b55cfca | 1583 | if (orc == CONFNAK) { /* Nak this CI? */ |
DieterGraef | 0:d26c1b55cfca | 1584 | if (reject_if_disagree /* Getting fed up with sending NAKs? */ |
DieterGraef | 0:d26c1b55cfca | 1585 | && citype != CI_MAGICNUMBER) { |
DieterGraef | 0:d26c1b55cfca | 1586 | orc = CONFREJ; /* Get tough if so */ |
DieterGraef | 0:d26c1b55cfca | 1587 | } else { |
DieterGraef | 0:d26c1b55cfca | 1588 | if (rc == CONFREJ) { /* Rejecting prior CI? */ |
DieterGraef | 0:d26c1b55cfca | 1589 | continue; /* Don't send this one */ |
DieterGraef | 0:d26c1b55cfca | 1590 | } |
DieterGraef | 0:d26c1b55cfca | 1591 | rc = CONFNAK; |
DieterGraef | 0:d26c1b55cfca | 1592 | } |
DieterGraef | 0:d26c1b55cfca | 1593 | } |
DieterGraef | 0:d26c1b55cfca | 1594 | if (orc == CONFREJ) { /* Reject this CI */ |
DieterGraef | 0:d26c1b55cfca | 1595 | rc = CONFREJ; |
DieterGraef | 0:d26c1b55cfca | 1596 | if (cip != rejp) { /* Need to move rejected CI? */ |
DieterGraef | 0:d26c1b55cfca | 1597 | BCOPY(cip, rejp, cilen); /* Move it */ |
DieterGraef | 0:d26c1b55cfca | 1598 | } |
DieterGraef | 0:d26c1b55cfca | 1599 | INCPTR(cilen, rejp); /* Update output pointer */ |
DieterGraef | 0:d26c1b55cfca | 1600 | } |
DieterGraef | 0:d26c1b55cfca | 1601 | } |
DieterGraef | 0:d26c1b55cfca | 1602 | |
DieterGraef | 0:d26c1b55cfca | 1603 | /* |
DieterGraef | 0:d26c1b55cfca | 1604 | * If we wanted to send additional NAKs (for unsent CIs), the |
DieterGraef | 0:d26c1b55cfca | 1605 | * code would go here. The extra NAKs would go at *nakp. |
DieterGraef | 0:d26c1b55cfca | 1606 | * At present there are no cases where we want to ask the |
DieterGraef | 0:d26c1b55cfca | 1607 | * peer to negotiate an option. |
DieterGraef | 0:d26c1b55cfca | 1608 | */ |
DieterGraef | 0:d26c1b55cfca | 1609 | |
DieterGraef | 0:d26c1b55cfca | 1610 | switch (rc) { |
DieterGraef | 0:d26c1b55cfca | 1611 | case CONFACK: |
DieterGraef | 0:d26c1b55cfca | 1612 | *lenp = (int)(next - inp); |
DieterGraef | 0:d26c1b55cfca | 1613 | break; |
DieterGraef | 0:d26c1b55cfca | 1614 | case CONFNAK: |
DieterGraef | 0:d26c1b55cfca | 1615 | /* |
DieterGraef | 0:d26c1b55cfca | 1616 | * Copy the Nak'd options from the nak_buffer to the caller's buffer. |
DieterGraef | 0:d26c1b55cfca | 1617 | */ |
DieterGraef | 0:d26c1b55cfca | 1618 | *lenp = (int)(nakp - nak_buffer); |
DieterGraef | 0:d26c1b55cfca | 1619 | BCOPY(nak_buffer, inp, *lenp); |
DieterGraef | 0:d26c1b55cfca | 1620 | break; |
DieterGraef | 0:d26c1b55cfca | 1621 | case CONFREJ: |
DieterGraef | 0:d26c1b55cfca | 1622 | *lenp = (int)(rejp - inp); |
DieterGraef | 0:d26c1b55cfca | 1623 | break; |
DieterGraef | 0:d26c1b55cfca | 1624 | } |
DieterGraef | 0:d26c1b55cfca | 1625 | |
DieterGraef | 0:d26c1b55cfca | 1626 | #if TRACELCP > 0 |
DieterGraef | 0:d26c1b55cfca | 1627 | if (traceNdx > 0) { |
DieterGraef | 0:d26c1b55cfca | 1628 | LCPDEBUG(LOG_INFO, ("lcp_reqci: %s\n", traceBuf)); |
DieterGraef | 0:d26c1b55cfca | 1629 | } |
DieterGraef | 0:d26c1b55cfca | 1630 | #endif |
DieterGraef | 0:d26c1b55cfca | 1631 | LCPDEBUG(LOG_INFO, ("lcp_reqci: returning CONF%s.\n", CODENAME(rc))); |
DieterGraef | 0:d26c1b55cfca | 1632 | return (rc); /* Return final code */ |
DieterGraef | 0:d26c1b55cfca | 1633 | } |
DieterGraef | 0:d26c1b55cfca | 1634 | |
DieterGraef | 0:d26c1b55cfca | 1635 | |
DieterGraef | 0:d26c1b55cfca | 1636 | /* |
DieterGraef | 0:d26c1b55cfca | 1637 | * lcp_up - LCP has come UP. |
DieterGraef | 0:d26c1b55cfca | 1638 | */ |
DieterGraef | 0:d26c1b55cfca | 1639 | static void |
DieterGraef | 0:d26c1b55cfca | 1640 | lcp_up(fsm *f) |
DieterGraef | 0:d26c1b55cfca | 1641 | { |
DieterGraef | 0:d26c1b55cfca | 1642 | lcp_options *wo = &lcp_wantoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 1643 | lcp_options *ho = &lcp_hisoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 1644 | lcp_options *go = &lcp_gotoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 1645 | lcp_options *ao = &lcp_allowoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 1646 | |
DieterGraef | 0:d26c1b55cfca | 1647 | if (!go->neg_magicnumber) { |
DieterGraef | 0:d26c1b55cfca | 1648 | go->magicnumber = 0; |
DieterGraef | 0:d26c1b55cfca | 1649 | } |
DieterGraef | 0:d26c1b55cfca | 1650 | if (!ho->neg_magicnumber) { |
DieterGraef | 0:d26c1b55cfca | 1651 | ho->magicnumber = 0; |
DieterGraef | 0:d26c1b55cfca | 1652 | } |
DieterGraef | 0:d26c1b55cfca | 1653 | |
DieterGraef | 0:d26c1b55cfca | 1654 | /* |
DieterGraef | 0:d26c1b55cfca | 1655 | * Set our MTU to the smaller of the MTU we wanted and |
DieterGraef | 0:d26c1b55cfca | 1656 | * the MRU our peer wanted. If we negotiated an MRU, |
DieterGraef | 0:d26c1b55cfca | 1657 | * set our MRU to the larger of value we wanted and |
DieterGraef | 0:d26c1b55cfca | 1658 | * the value we got in the negotiation. |
DieterGraef | 0:d26c1b55cfca | 1659 | */ |
DieterGraef | 0:d26c1b55cfca | 1660 | ppp_send_config(f->unit, LWIP_MIN(ao->mru, (ho->neg_mru? ho->mru: PPP_MRU)), |
DieterGraef | 0:d26c1b55cfca | 1661 | (ho->neg_asyncmap? ho->asyncmap: 0xffffffffl), |
DieterGraef | 0:d26c1b55cfca | 1662 | ho->neg_pcompression, ho->neg_accompression); |
DieterGraef | 0:d26c1b55cfca | 1663 | /* |
DieterGraef | 0:d26c1b55cfca | 1664 | * If the asyncmap hasn't been negotiated, we really should |
DieterGraef | 0:d26c1b55cfca | 1665 | * set the receive asyncmap to ffffffff, but we set it to 0 |
DieterGraef | 0:d26c1b55cfca | 1666 | * for backwards contemptibility. |
DieterGraef | 0:d26c1b55cfca | 1667 | */ |
DieterGraef | 0:d26c1b55cfca | 1668 | ppp_recv_config(f->unit, (go->neg_mru? LWIP_MAX(wo->mru, go->mru): PPP_MRU), |
DieterGraef | 0:d26c1b55cfca | 1669 | (go->neg_asyncmap? go->asyncmap: 0x00000000), |
DieterGraef | 0:d26c1b55cfca | 1670 | go->neg_pcompression, go->neg_accompression); |
DieterGraef | 0:d26c1b55cfca | 1671 | |
DieterGraef | 0:d26c1b55cfca | 1672 | if (ho->neg_mru) { |
DieterGraef | 0:d26c1b55cfca | 1673 | peer_mru[f->unit] = ho->mru; |
DieterGraef | 0:d26c1b55cfca | 1674 | } |
DieterGraef | 0:d26c1b55cfca | 1675 | |
DieterGraef | 0:d26c1b55cfca | 1676 | lcp_echo_lowerup(f->unit); /* Enable echo messages */ |
DieterGraef | 0:d26c1b55cfca | 1677 | |
DieterGraef | 0:d26c1b55cfca | 1678 | link_established(f->unit); /* The link is up; authenticate now */ |
DieterGraef | 0:d26c1b55cfca | 1679 | } |
DieterGraef | 0:d26c1b55cfca | 1680 | |
DieterGraef | 0:d26c1b55cfca | 1681 | |
DieterGraef | 0:d26c1b55cfca | 1682 | /* |
DieterGraef | 0:d26c1b55cfca | 1683 | * lcp_down - LCP has gone DOWN. |
DieterGraef | 0:d26c1b55cfca | 1684 | * |
DieterGraef | 0:d26c1b55cfca | 1685 | * Alert other protocols. |
DieterGraef | 0:d26c1b55cfca | 1686 | */ |
DieterGraef | 0:d26c1b55cfca | 1687 | static void |
DieterGraef | 0:d26c1b55cfca | 1688 | lcp_down(fsm *f) |
DieterGraef | 0:d26c1b55cfca | 1689 | { |
DieterGraef | 0:d26c1b55cfca | 1690 | lcp_options *go = &lcp_gotoptions[f->unit]; |
DieterGraef | 0:d26c1b55cfca | 1691 | |
DieterGraef | 0:d26c1b55cfca | 1692 | lcp_echo_lowerdown(f->unit); |
DieterGraef | 0:d26c1b55cfca | 1693 | |
DieterGraef | 0:d26c1b55cfca | 1694 | link_down(f->unit); |
DieterGraef | 0:d26c1b55cfca | 1695 | |
DieterGraef | 0:d26c1b55cfca | 1696 | ppp_send_config(f->unit, PPP_MRU, 0xffffffffl, 0, 0); |
DieterGraef | 0:d26c1b55cfca | 1697 | ppp_recv_config(f->unit, PPP_MRU, |
DieterGraef | 0:d26c1b55cfca | 1698 | (go->neg_asyncmap? go->asyncmap: 0x00000000), |
DieterGraef | 0:d26c1b55cfca | 1699 | go->neg_pcompression, go->neg_accompression); |
DieterGraef | 0:d26c1b55cfca | 1700 | peer_mru[f->unit] = PPP_MRU; |
DieterGraef | 0:d26c1b55cfca | 1701 | } |
DieterGraef | 0:d26c1b55cfca | 1702 | |
DieterGraef | 0:d26c1b55cfca | 1703 | |
DieterGraef | 0:d26c1b55cfca | 1704 | /* |
DieterGraef | 0:d26c1b55cfca | 1705 | * lcp_starting - LCP needs the lower layer up. |
DieterGraef | 0:d26c1b55cfca | 1706 | */ |
DieterGraef | 0:d26c1b55cfca | 1707 | static void |
DieterGraef | 0:d26c1b55cfca | 1708 | lcp_starting(fsm *f) |
DieterGraef | 0:d26c1b55cfca | 1709 | { |
DieterGraef | 0:d26c1b55cfca | 1710 | link_required(f->unit); /* lwip: currently does nothing */ |
DieterGraef | 0:d26c1b55cfca | 1711 | } |
DieterGraef | 0:d26c1b55cfca | 1712 | |
DieterGraef | 0:d26c1b55cfca | 1713 | |
DieterGraef | 0:d26c1b55cfca | 1714 | /* |
DieterGraef | 0:d26c1b55cfca | 1715 | * lcp_finished - LCP has finished with the lower layer. |
DieterGraef | 0:d26c1b55cfca | 1716 | */ |
DieterGraef | 0:d26c1b55cfca | 1717 | static void |
DieterGraef | 0:d26c1b55cfca | 1718 | lcp_finished(fsm *f) |
DieterGraef | 0:d26c1b55cfca | 1719 | { |
DieterGraef | 0:d26c1b55cfca | 1720 | link_terminated(f->unit); /* we are finished with the link */ |
DieterGraef | 0:d26c1b55cfca | 1721 | } |
DieterGraef | 0:d26c1b55cfca | 1722 | |
DieterGraef | 0:d26c1b55cfca | 1723 | |
DieterGraef | 0:d26c1b55cfca | 1724 | #if PPP_ADDITIONAL_CALLBACKS |
DieterGraef | 0:d26c1b55cfca | 1725 | /* |
DieterGraef | 0:d26c1b55cfca | 1726 | * print_string - print a readable representation of a string using |
DieterGraef | 0:d26c1b55cfca | 1727 | * printer. |
DieterGraef | 0:d26c1b55cfca | 1728 | */ |
DieterGraef | 0:d26c1b55cfca | 1729 | static void |
DieterGraef | 0:d26c1b55cfca | 1730 | print_string( char *p, int len, void (*printer) (void *, char *, ...), void *arg) |
DieterGraef | 0:d26c1b55cfca | 1731 | { |
DieterGraef | 0:d26c1b55cfca | 1732 | int c; |
DieterGraef | 0:d26c1b55cfca | 1733 | |
DieterGraef | 0:d26c1b55cfca | 1734 | printer(arg, "\""); |
DieterGraef | 0:d26c1b55cfca | 1735 | for (; len > 0; --len) { |
DieterGraef | 0:d26c1b55cfca | 1736 | c = *p++; |
DieterGraef | 0:d26c1b55cfca | 1737 | if (' ' <= c && c <= '~') { |
DieterGraef | 0:d26c1b55cfca | 1738 | if (c == '\\' || c == '"') { |
DieterGraef | 0:d26c1b55cfca | 1739 | printer(arg, "\\"); |
DieterGraef | 0:d26c1b55cfca | 1740 | } |
DieterGraef | 0:d26c1b55cfca | 1741 | printer(arg, "%c", c); |
DieterGraef | 0:d26c1b55cfca | 1742 | } else { |
DieterGraef | 0:d26c1b55cfca | 1743 | switch (c) { |
DieterGraef | 0:d26c1b55cfca | 1744 | case '\n': |
DieterGraef | 0:d26c1b55cfca | 1745 | printer(arg, "\\n"); |
DieterGraef | 0:d26c1b55cfca | 1746 | break; |
DieterGraef | 0:d26c1b55cfca | 1747 | case '\r': |
DieterGraef | 0:d26c1b55cfca | 1748 | printer(arg, "\\r"); |
DieterGraef | 0:d26c1b55cfca | 1749 | break; |
DieterGraef | 0:d26c1b55cfca | 1750 | case '\t': |
DieterGraef | 0:d26c1b55cfca | 1751 | printer(arg, "\\t"); |
DieterGraef | 0:d26c1b55cfca | 1752 | break; |
DieterGraef | 0:d26c1b55cfca | 1753 | default: |
DieterGraef | 0:d26c1b55cfca | 1754 | printer(arg, "\\%.3o", c); |
DieterGraef | 0:d26c1b55cfca | 1755 | } |
DieterGraef | 0:d26c1b55cfca | 1756 | } |
DieterGraef | 0:d26c1b55cfca | 1757 | } |
DieterGraef | 0:d26c1b55cfca | 1758 | printer(arg, "\""); |
DieterGraef | 0:d26c1b55cfca | 1759 | } |
DieterGraef | 0:d26c1b55cfca | 1760 | |
DieterGraef | 0:d26c1b55cfca | 1761 | |
DieterGraef | 0:d26c1b55cfca | 1762 | /* |
DieterGraef | 0:d26c1b55cfca | 1763 | * lcp_printpkt - print the contents of an LCP packet. |
DieterGraef | 0:d26c1b55cfca | 1764 | */ |
DieterGraef | 0:d26c1b55cfca | 1765 | static char *lcp_codenames[] = { |
DieterGraef | 0:d26c1b55cfca | 1766 | "ConfReq", "ConfAck", "ConfNak", "ConfRej", |
DieterGraef | 0:d26c1b55cfca | 1767 | "TermReq", "TermAck", "CodeRej", "ProtRej", |
DieterGraef | 0:d26c1b55cfca | 1768 | "EchoReq", "EchoRep", "DiscReq" |
DieterGraef | 0:d26c1b55cfca | 1769 | }; |
DieterGraef | 0:d26c1b55cfca | 1770 | |
DieterGraef | 0:d26c1b55cfca | 1771 | static int |
DieterGraef | 0:d26c1b55cfca | 1772 | lcp_printpkt( u_char *p, int plen, void (*printer) (void *, char *, ...), void *arg) |
DieterGraef | 0:d26c1b55cfca | 1773 | { |
DieterGraef | 0:d26c1b55cfca | 1774 | int code, id, len, olen; |
DieterGraef | 0:d26c1b55cfca | 1775 | u_char *pstart, *optend; |
DieterGraef | 0:d26c1b55cfca | 1776 | u_short cishort; |
DieterGraef | 0:d26c1b55cfca | 1777 | u32_t cilong; |
DieterGraef | 0:d26c1b55cfca | 1778 | |
DieterGraef | 0:d26c1b55cfca | 1779 | if (plen < HEADERLEN) { |
DieterGraef | 0:d26c1b55cfca | 1780 | return 0; |
DieterGraef | 0:d26c1b55cfca | 1781 | } |
DieterGraef | 0:d26c1b55cfca | 1782 | pstart = p; |
DieterGraef | 0:d26c1b55cfca | 1783 | GETCHAR(code, p); |
DieterGraef | 0:d26c1b55cfca | 1784 | GETCHAR(id, p); |
DieterGraef | 0:d26c1b55cfca | 1785 | GETSHORT(len, p); |
DieterGraef | 0:d26c1b55cfca | 1786 | if (len < HEADERLEN || len > plen) { |
DieterGraef | 0:d26c1b55cfca | 1787 | return 0; |
DieterGraef | 0:d26c1b55cfca | 1788 | } |
DieterGraef | 0:d26c1b55cfca | 1789 | |
DieterGraef | 0:d26c1b55cfca | 1790 | if (code >= 1 && code <= sizeof(lcp_codenames) / sizeof(char *)) { |
DieterGraef | 0:d26c1b55cfca | 1791 | printer(arg, " %s", lcp_codenames[code-1]); |
DieterGraef | 0:d26c1b55cfca | 1792 | } else { |
DieterGraef | 0:d26c1b55cfca | 1793 | printer(arg, " code=0x%x", code); |
DieterGraef | 0:d26c1b55cfca | 1794 | } |
DieterGraef | 0:d26c1b55cfca | 1795 | printer(arg, " id=0x%x", id); |
DieterGraef | 0:d26c1b55cfca | 1796 | len -= HEADERLEN; |
DieterGraef | 0:d26c1b55cfca | 1797 | switch (code) { |
DieterGraef | 0:d26c1b55cfca | 1798 | case CONFREQ: |
DieterGraef | 0:d26c1b55cfca | 1799 | case CONFACK: |
DieterGraef | 0:d26c1b55cfca | 1800 | case CONFNAK: |
DieterGraef | 0:d26c1b55cfca | 1801 | case CONFREJ: |
DieterGraef | 0:d26c1b55cfca | 1802 | /* print option list */ |
DieterGraef | 0:d26c1b55cfca | 1803 | while (len >= 2) { |
DieterGraef | 0:d26c1b55cfca | 1804 | GETCHAR(code, p); |
DieterGraef | 0:d26c1b55cfca | 1805 | GETCHAR(olen, p); |
DieterGraef | 0:d26c1b55cfca | 1806 | p -= 2; |
DieterGraef | 0:d26c1b55cfca | 1807 | if (olen < 2 || olen > len) { |
DieterGraef | 0:d26c1b55cfca | 1808 | break; |
DieterGraef | 0:d26c1b55cfca | 1809 | } |
DieterGraef | 0:d26c1b55cfca | 1810 | printer(arg, " <"); |
DieterGraef | 0:d26c1b55cfca | 1811 | len -= olen; |
DieterGraef | 0:d26c1b55cfca | 1812 | optend = p + olen; |
DieterGraef | 0:d26c1b55cfca | 1813 | switch (code) { |
DieterGraef | 0:d26c1b55cfca | 1814 | case CI_MRU: |
DieterGraef | 0:d26c1b55cfca | 1815 | if (olen == CILEN_SHORT) { |
DieterGraef | 0:d26c1b55cfca | 1816 | p += 2; |
DieterGraef | 0:d26c1b55cfca | 1817 | GETSHORT(cishort, p); |
DieterGraef | 0:d26c1b55cfca | 1818 | printer(arg, "mru %d", cishort); |
DieterGraef | 0:d26c1b55cfca | 1819 | } |
DieterGraef | 0:d26c1b55cfca | 1820 | break; |
DieterGraef | 0:d26c1b55cfca | 1821 | case CI_ASYNCMAP: |
DieterGraef | 0:d26c1b55cfca | 1822 | if (olen == CILEN_LONG) { |
DieterGraef | 0:d26c1b55cfca | 1823 | p += 2; |
DieterGraef | 0:d26c1b55cfca | 1824 | GETLONG(cilong, p); |
DieterGraef | 0:d26c1b55cfca | 1825 | printer(arg, "asyncmap 0x%lx", cilong); |
DieterGraef | 0:d26c1b55cfca | 1826 | } |
DieterGraef | 0:d26c1b55cfca | 1827 | break; |
DieterGraef | 0:d26c1b55cfca | 1828 | case CI_AUTHTYPE: |
DieterGraef | 0:d26c1b55cfca | 1829 | if (olen >= CILEN_SHORT) { |
DieterGraef | 0:d26c1b55cfca | 1830 | p += 2; |
DieterGraef | 0:d26c1b55cfca | 1831 | printer(arg, "auth "); |
DieterGraef | 0:d26c1b55cfca | 1832 | GETSHORT(cishort, p); |
DieterGraef | 0:d26c1b55cfca | 1833 | switch (cishort) { |
DieterGraef | 0:d26c1b55cfca | 1834 | case PPP_PAP: |
DieterGraef | 0:d26c1b55cfca | 1835 | printer(arg, "pap"); |
DieterGraef | 0:d26c1b55cfca | 1836 | break; |
DieterGraef | 0:d26c1b55cfca | 1837 | case PPP_CHAP: |
DieterGraef | 0:d26c1b55cfca | 1838 | printer(arg, "chap"); |
DieterGraef | 0:d26c1b55cfca | 1839 | break; |
DieterGraef | 0:d26c1b55cfca | 1840 | default: |
DieterGraef | 0:d26c1b55cfca | 1841 | printer(arg, "0x%x", cishort); |
DieterGraef | 0:d26c1b55cfca | 1842 | } |
DieterGraef | 0:d26c1b55cfca | 1843 | } |
DieterGraef | 0:d26c1b55cfca | 1844 | break; |
DieterGraef | 0:d26c1b55cfca | 1845 | case CI_QUALITY: |
DieterGraef | 0:d26c1b55cfca | 1846 | if (olen >= CILEN_SHORT) { |
DieterGraef | 0:d26c1b55cfca | 1847 | p += 2; |
DieterGraef | 0:d26c1b55cfca | 1848 | printer(arg, "quality "); |
DieterGraef | 0:d26c1b55cfca | 1849 | GETSHORT(cishort, p); |
DieterGraef | 0:d26c1b55cfca | 1850 | switch (cishort) { |
DieterGraef | 0:d26c1b55cfca | 1851 | case PPP_LQR: |
DieterGraef | 0:d26c1b55cfca | 1852 | printer(arg, "lqr"); |
DieterGraef | 0:d26c1b55cfca | 1853 | break; |
DieterGraef | 0:d26c1b55cfca | 1854 | default: |
DieterGraef | 0:d26c1b55cfca | 1855 | printer(arg, "0x%x", cishort); |
DieterGraef | 0:d26c1b55cfca | 1856 | } |
DieterGraef | 0:d26c1b55cfca | 1857 | } |
DieterGraef | 0:d26c1b55cfca | 1858 | break; |
DieterGraef | 0:d26c1b55cfca | 1859 | case CI_CALLBACK: |
DieterGraef | 0:d26c1b55cfca | 1860 | if (olen >= CILEN_CHAR) { |
DieterGraef | 0:d26c1b55cfca | 1861 | p += 2; |
DieterGraef | 0:d26c1b55cfca | 1862 | printer(arg, "callback "); |
DieterGraef | 0:d26c1b55cfca | 1863 | GETSHORT(cishort, p); |
DieterGraef | 0:d26c1b55cfca | 1864 | switch (cishort) { |
DieterGraef | 0:d26c1b55cfca | 1865 | case CBCP_OPT: |
DieterGraef | 0:d26c1b55cfca | 1866 | printer(arg, "CBCP"); |
DieterGraef | 0:d26c1b55cfca | 1867 | break; |
DieterGraef | 0:d26c1b55cfca | 1868 | default: |
DieterGraef | 0:d26c1b55cfca | 1869 | printer(arg, "0x%x", cishort); |
DieterGraef | 0:d26c1b55cfca | 1870 | } |
DieterGraef | 0:d26c1b55cfca | 1871 | } |
DieterGraef | 0:d26c1b55cfca | 1872 | break; |
DieterGraef | 0:d26c1b55cfca | 1873 | case CI_MAGICNUMBER: |
DieterGraef | 0:d26c1b55cfca | 1874 | if (olen == CILEN_LONG) { |
DieterGraef | 0:d26c1b55cfca | 1875 | p += 2; |
DieterGraef | 0:d26c1b55cfca | 1876 | GETLONG(cilong, p); |
DieterGraef | 0:d26c1b55cfca | 1877 | printer(arg, "magic 0x%x", cilong); |
DieterGraef | 0:d26c1b55cfca | 1878 | } |
DieterGraef | 0:d26c1b55cfca | 1879 | break; |
DieterGraef | 0:d26c1b55cfca | 1880 | case CI_PCOMPRESSION: |
DieterGraef | 0:d26c1b55cfca | 1881 | if (olen == CILEN_VOID) { |
DieterGraef | 0:d26c1b55cfca | 1882 | p += 2; |
DieterGraef | 0:d26c1b55cfca | 1883 | printer(arg, "pcomp"); |
DieterGraef | 0:d26c1b55cfca | 1884 | } |
DieterGraef | 0:d26c1b55cfca | 1885 | break; |
DieterGraef | 0:d26c1b55cfca | 1886 | case CI_ACCOMPRESSION: |
DieterGraef | 0:d26c1b55cfca | 1887 | if (olen == CILEN_VOID) { |
DieterGraef | 0:d26c1b55cfca | 1888 | p += 2; |
DieterGraef | 0:d26c1b55cfca | 1889 | printer(arg, "accomp"); |
DieterGraef | 0:d26c1b55cfca | 1890 | } |
DieterGraef | 0:d26c1b55cfca | 1891 | break; |
DieterGraef | 0:d26c1b55cfca | 1892 | } |
DieterGraef | 0:d26c1b55cfca | 1893 | while (p < optend) { |
DieterGraef | 0:d26c1b55cfca | 1894 | GETCHAR(code, p); |
DieterGraef | 0:d26c1b55cfca | 1895 | printer(arg, " %.2x", code); |
DieterGraef | 0:d26c1b55cfca | 1896 | } |
DieterGraef | 0:d26c1b55cfca | 1897 | printer(arg, ">"); |
DieterGraef | 0:d26c1b55cfca | 1898 | } |
DieterGraef | 0:d26c1b55cfca | 1899 | break; |
DieterGraef | 0:d26c1b55cfca | 1900 | |
DieterGraef | 0:d26c1b55cfca | 1901 | case TERMACK: |
DieterGraef | 0:d26c1b55cfca | 1902 | case TERMREQ: |
DieterGraef | 0:d26c1b55cfca | 1903 | if (len > 0 && *p >= ' ' && *p < 0x7f) { |
DieterGraef | 0:d26c1b55cfca | 1904 | printer(arg, " "); |
DieterGraef | 0:d26c1b55cfca | 1905 | print_string((char*)p, len, printer, arg); |
DieterGraef | 0:d26c1b55cfca | 1906 | p += len; |
DieterGraef | 0:d26c1b55cfca | 1907 | len = 0; |
DieterGraef | 0:d26c1b55cfca | 1908 | } |
DieterGraef | 0:d26c1b55cfca | 1909 | break; |
DieterGraef | 0:d26c1b55cfca | 1910 | |
DieterGraef | 0:d26c1b55cfca | 1911 | case ECHOREQ: |
DieterGraef | 0:d26c1b55cfca | 1912 | case ECHOREP: |
DieterGraef | 0:d26c1b55cfca | 1913 | case DISCREQ: |
DieterGraef | 0:d26c1b55cfca | 1914 | if (len >= 4) { |
DieterGraef | 0:d26c1b55cfca | 1915 | GETLONG(cilong, p); |
DieterGraef | 0:d26c1b55cfca | 1916 | printer(arg, " magic=0x%x", cilong); |
DieterGraef | 0:d26c1b55cfca | 1917 | p += 4; |
DieterGraef | 0:d26c1b55cfca | 1918 | len -= 4; |
DieterGraef | 0:d26c1b55cfca | 1919 | } |
DieterGraef | 0:d26c1b55cfca | 1920 | break; |
DieterGraef | 0:d26c1b55cfca | 1921 | } |
DieterGraef | 0:d26c1b55cfca | 1922 | |
DieterGraef | 0:d26c1b55cfca | 1923 | /* print the rest of the bytes in the packet */ |
DieterGraef | 0:d26c1b55cfca | 1924 | for (; len > 0; --len) { |
DieterGraef | 0:d26c1b55cfca | 1925 | GETCHAR(code, p); |
DieterGraef | 0:d26c1b55cfca | 1926 | printer(arg, " %.2x", code); |
DieterGraef | 0:d26c1b55cfca | 1927 | } |
DieterGraef | 0:d26c1b55cfca | 1928 | |
DieterGraef | 0:d26c1b55cfca | 1929 | return (int)(p - pstart); |
DieterGraef | 0:d26c1b55cfca | 1930 | } |
DieterGraef | 0:d26c1b55cfca | 1931 | #endif /* PPP_ADDITIONAL_CALLBACKS */ |
DieterGraef | 0:d26c1b55cfca | 1932 | |
DieterGraef | 0:d26c1b55cfca | 1933 | /* |
DieterGraef | 0:d26c1b55cfca | 1934 | * Time to shut down the link because there is nothing out there. |
DieterGraef | 0:d26c1b55cfca | 1935 | */ |
DieterGraef | 0:d26c1b55cfca | 1936 | static void |
DieterGraef | 0:d26c1b55cfca | 1937 | LcpLinkFailure (fsm *f) |
DieterGraef | 0:d26c1b55cfca | 1938 | { |
DieterGraef | 0:d26c1b55cfca | 1939 | if (f->state == LS_OPENED) { |
DieterGraef | 0:d26c1b55cfca | 1940 | LCPDEBUG(LOG_INFO, ("No response to %d echo-requests\n", lcp_echos_pending)); |
DieterGraef | 0:d26c1b55cfca | 1941 | LCPDEBUG(LOG_NOTICE, ("Serial link appears to be disconnected.\n")); |
DieterGraef | 0:d26c1b55cfca | 1942 | lcp_close(f->unit, "Peer not responding"); |
DieterGraef | 0:d26c1b55cfca | 1943 | } |
DieterGraef | 0:d26c1b55cfca | 1944 | } |
DieterGraef | 0:d26c1b55cfca | 1945 | |
DieterGraef | 0:d26c1b55cfca | 1946 | /* |
DieterGraef | 0:d26c1b55cfca | 1947 | * Timer expired for the LCP echo requests from this process. |
DieterGraef | 0:d26c1b55cfca | 1948 | */ |
DieterGraef | 0:d26c1b55cfca | 1949 | static void |
DieterGraef | 0:d26c1b55cfca | 1950 | LcpEchoCheck (fsm *f) |
DieterGraef | 0:d26c1b55cfca | 1951 | { |
DieterGraef | 0:d26c1b55cfca | 1952 | LcpSendEchoRequest (f); |
DieterGraef | 0:d26c1b55cfca | 1953 | |
DieterGraef | 0:d26c1b55cfca | 1954 | /* |
DieterGraef | 0:d26c1b55cfca | 1955 | * Start the timer for the next interval. |
DieterGraef | 0:d26c1b55cfca | 1956 | */ |
DieterGraef | 0:d26c1b55cfca | 1957 | LWIP_ASSERT("lcp_echo_timer_running == 0", lcp_echo_timer_running == 0); |
DieterGraef | 0:d26c1b55cfca | 1958 | |
DieterGraef | 0:d26c1b55cfca | 1959 | TIMEOUT (LcpEchoTimeout, f, lcp_echo_interval); |
DieterGraef | 0:d26c1b55cfca | 1960 | lcp_echo_timer_running = 1; |
DieterGraef | 0:d26c1b55cfca | 1961 | } |
DieterGraef | 0:d26c1b55cfca | 1962 | |
DieterGraef | 0:d26c1b55cfca | 1963 | /* |
DieterGraef | 0:d26c1b55cfca | 1964 | * LcpEchoTimeout - Timer expired on the LCP echo |
DieterGraef | 0:d26c1b55cfca | 1965 | */ |
DieterGraef | 0:d26c1b55cfca | 1966 | static void |
DieterGraef | 0:d26c1b55cfca | 1967 | LcpEchoTimeout (void *arg) |
DieterGraef | 0:d26c1b55cfca | 1968 | { |
DieterGraef | 0:d26c1b55cfca | 1969 | if (lcp_echo_timer_running != 0) { |
DieterGraef | 0:d26c1b55cfca | 1970 | lcp_echo_timer_running = 0; |
DieterGraef | 0:d26c1b55cfca | 1971 | LcpEchoCheck ((fsm *) arg); |
DieterGraef | 0:d26c1b55cfca | 1972 | } |
DieterGraef | 0:d26c1b55cfca | 1973 | } |
DieterGraef | 0:d26c1b55cfca | 1974 | |
DieterGraef | 0:d26c1b55cfca | 1975 | /* |
DieterGraef | 0:d26c1b55cfca | 1976 | * LcpEchoReply - LCP has received a reply to the echo |
DieterGraef | 0:d26c1b55cfca | 1977 | */ |
DieterGraef | 0:d26c1b55cfca | 1978 | static void |
DieterGraef | 0:d26c1b55cfca | 1979 | lcp_received_echo_reply (fsm *f, int id, u_char *inp, int len) |
DieterGraef | 0:d26c1b55cfca | 1980 | { |
DieterGraef | 0:d26c1b55cfca | 1981 | u32_t magic; |
DieterGraef | 0:d26c1b55cfca | 1982 | |
DieterGraef | 0:d26c1b55cfca | 1983 | LWIP_UNUSED_ARG(id); |
DieterGraef | 0:d26c1b55cfca | 1984 | |
DieterGraef | 0:d26c1b55cfca | 1985 | /* Check the magic number - don't count replies from ourselves. */ |
DieterGraef | 0:d26c1b55cfca | 1986 | if (len < 4) { |
DieterGraef | 0:d26c1b55cfca | 1987 | LCPDEBUG(LOG_WARNING, ("lcp: received short Echo-Reply, length %d\n", len)); |
DieterGraef | 0:d26c1b55cfca | 1988 | return; |
DieterGraef | 0:d26c1b55cfca | 1989 | } |
DieterGraef | 0:d26c1b55cfca | 1990 | GETLONG(magic, inp); |
DieterGraef | 0:d26c1b55cfca | 1991 | if (lcp_gotoptions[f->unit].neg_magicnumber && magic == lcp_gotoptions[f->unit].magicnumber) { |
DieterGraef | 0:d26c1b55cfca | 1992 | LCPDEBUG(LOG_WARNING, ("appear to have received our own echo-reply!\n")); |
DieterGraef | 0:d26c1b55cfca | 1993 | return; |
DieterGraef | 0:d26c1b55cfca | 1994 | } |
DieterGraef | 0:d26c1b55cfca | 1995 | |
DieterGraef | 0:d26c1b55cfca | 1996 | /* Reset the number of outstanding echo frames */ |
DieterGraef | 0:d26c1b55cfca | 1997 | lcp_echos_pending = 0; |
DieterGraef | 0:d26c1b55cfca | 1998 | } |
DieterGraef | 0:d26c1b55cfca | 1999 | |
DieterGraef | 0:d26c1b55cfca | 2000 | /* |
DieterGraef | 0:d26c1b55cfca | 2001 | * LcpSendEchoRequest - Send an echo request frame to the peer |
DieterGraef | 0:d26c1b55cfca | 2002 | */ |
DieterGraef | 0:d26c1b55cfca | 2003 | static void |
DieterGraef | 0:d26c1b55cfca | 2004 | LcpSendEchoRequest (fsm *f) |
DieterGraef | 0:d26c1b55cfca | 2005 | { |
DieterGraef | 0:d26c1b55cfca | 2006 | u32_t lcp_magic; |
DieterGraef | 0:d26c1b55cfca | 2007 | u_char pkt[4], *pktp; |
DieterGraef | 0:d26c1b55cfca | 2008 | |
DieterGraef | 0:d26c1b55cfca | 2009 | /* |
DieterGraef | 0:d26c1b55cfca | 2010 | * Detect the failure of the peer at this point. |
DieterGraef | 0:d26c1b55cfca | 2011 | */ |
DieterGraef | 0:d26c1b55cfca | 2012 | if (lcp_echo_fails != 0) { |
DieterGraef | 0:d26c1b55cfca | 2013 | if (lcp_echos_pending >= lcp_echo_fails) { |
DieterGraef | 0:d26c1b55cfca | 2014 | LcpLinkFailure(f); |
DieterGraef | 0:d26c1b55cfca | 2015 | lcp_echos_pending = 0; |
DieterGraef | 0:d26c1b55cfca | 2016 | } |
DieterGraef | 0:d26c1b55cfca | 2017 | } |
DieterGraef | 0:d26c1b55cfca | 2018 | |
DieterGraef | 0:d26c1b55cfca | 2019 | /* |
DieterGraef | 0:d26c1b55cfca | 2020 | * Make and send the echo request frame. |
DieterGraef | 0:d26c1b55cfca | 2021 | */ |
DieterGraef | 0:d26c1b55cfca | 2022 | if (f->state == LS_OPENED) { |
DieterGraef | 0:d26c1b55cfca | 2023 | lcp_magic = lcp_gotoptions[f->unit].magicnumber; |
DieterGraef | 0:d26c1b55cfca | 2024 | pktp = pkt; |
DieterGraef | 0:d26c1b55cfca | 2025 | PUTLONG(lcp_magic, pktp); |
DieterGraef | 0:d26c1b55cfca | 2026 | fsm_sdata(f, ECHOREQ, (u_char)(lcp_echo_number++ & 0xFF), pkt, (int)(pktp - pkt)); |
DieterGraef | 0:d26c1b55cfca | 2027 | ++lcp_echos_pending; |
DieterGraef | 0:d26c1b55cfca | 2028 | } |
DieterGraef | 0:d26c1b55cfca | 2029 | } |
DieterGraef | 0:d26c1b55cfca | 2030 | |
DieterGraef | 0:d26c1b55cfca | 2031 | /* |
DieterGraef | 0:d26c1b55cfca | 2032 | * lcp_echo_lowerup - Start the timer for the LCP frame |
DieterGraef | 0:d26c1b55cfca | 2033 | */ |
DieterGraef | 0:d26c1b55cfca | 2034 | |
DieterGraef | 0:d26c1b55cfca | 2035 | static void |
DieterGraef | 0:d26c1b55cfca | 2036 | lcp_echo_lowerup (int unit) |
DieterGraef | 0:d26c1b55cfca | 2037 | { |
DieterGraef | 0:d26c1b55cfca | 2038 | fsm *f = &lcp_fsm[unit]; |
DieterGraef | 0:d26c1b55cfca | 2039 | |
DieterGraef | 0:d26c1b55cfca | 2040 | /* Clear the parameters for generating echo frames */ |
DieterGraef | 0:d26c1b55cfca | 2041 | lcp_echos_pending = 0; |
DieterGraef | 0:d26c1b55cfca | 2042 | lcp_echo_number = 0; |
DieterGraef | 0:d26c1b55cfca | 2043 | lcp_echo_timer_running = 0; |
DieterGraef | 0:d26c1b55cfca | 2044 | |
DieterGraef | 0:d26c1b55cfca | 2045 | /* If a timeout interval is specified then start the timer */ |
DieterGraef | 0:d26c1b55cfca | 2046 | if (lcp_echo_interval != 0) { |
DieterGraef | 0:d26c1b55cfca | 2047 | LcpEchoCheck (f); |
DieterGraef | 0:d26c1b55cfca | 2048 | } |
DieterGraef | 0:d26c1b55cfca | 2049 | } |
DieterGraef | 0:d26c1b55cfca | 2050 | |
DieterGraef | 0:d26c1b55cfca | 2051 | /* |
DieterGraef | 0:d26c1b55cfca | 2052 | * lcp_echo_lowerdown - Stop the timer for the LCP frame |
DieterGraef | 0:d26c1b55cfca | 2053 | */ |
DieterGraef | 0:d26c1b55cfca | 2054 | |
DieterGraef | 0:d26c1b55cfca | 2055 | static void |
DieterGraef | 0:d26c1b55cfca | 2056 | lcp_echo_lowerdown (int unit) |
DieterGraef | 0:d26c1b55cfca | 2057 | { |
DieterGraef | 0:d26c1b55cfca | 2058 | fsm *f = &lcp_fsm[unit]; |
DieterGraef | 0:d26c1b55cfca | 2059 | |
DieterGraef | 0:d26c1b55cfca | 2060 | if (lcp_echo_timer_running != 0) { |
DieterGraef | 0:d26c1b55cfca | 2061 | UNTIMEOUT (LcpEchoTimeout, f); |
DieterGraef | 0:d26c1b55cfca | 2062 | lcp_echo_timer_running = 0; |
DieterGraef | 0:d26c1b55cfca | 2063 | } |
DieterGraef | 0:d26c1b55cfca | 2064 | } |
DieterGraef | 0:d26c1b55cfca | 2065 | |
DieterGraef | 0:d26c1b55cfca | 2066 | #endif /* PPP_SUPPORT */ |