[457] | 1 | /*
|
---|
| 2 | * ecp.c - PPP Encryption Control Protocol.
|
---|
| 3 | *
|
---|
| 4 | * Copyright (c) 2002 Google, Inc.
|
---|
| 5 | * All rights reserved.
|
---|
| 6 | *
|
---|
| 7 | * Redistribution and use in source and binary forms, with or without
|
---|
| 8 | * modification, are permitted provided that the following conditions
|
---|
| 9 | * are met:
|
---|
| 10 | *
|
---|
| 11 | * 1. Redistributions of source code must retain the above copyright
|
---|
| 12 | * notice, this list of conditions and the following disclaimer.
|
---|
| 13 | *
|
---|
| 14 | * 2. Redistributions in binary form must reproduce the above copyright
|
---|
| 15 | * notice, this list of conditions and the following disclaimer in
|
---|
| 16 | * the documentation and/or other materials provided with the
|
---|
| 17 | * distribution.
|
---|
| 18 | *
|
---|
| 19 | * 3. The name(s) of the authors of this software must not be used to
|
---|
| 20 | * endorse or promote products derived from this software without
|
---|
| 21 | * prior written permission.
|
---|
| 22 | *
|
---|
| 23 | * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
|
---|
| 24 | * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
---|
| 25 | * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
|
---|
| 26 | * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
---|
| 27 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
|
---|
| 28 | * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
|
---|
| 29 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
---|
| 30 | *
|
---|
| 31 | * Derived from ccp.c, which is:
|
---|
| 32 | *
|
---|
| 33 | * Copyright (c) 1994-2002 Paul Mackerras. All rights reserved.
|
---|
| 34 | *
|
---|
| 35 | * Redistribution and use in source and binary forms, with or without
|
---|
| 36 | * modification, are permitted provided that the following conditions
|
---|
| 37 | * are met:
|
---|
| 38 | *
|
---|
| 39 | * 1. Redistributions of source code must retain the above copyright
|
---|
| 40 | * notice, this list of conditions and the following disclaimer.
|
---|
| 41 | *
|
---|
| 42 | * 2. The name(s) of the authors of this software must not be used to
|
---|
| 43 | * endorse or promote products derived from this software without
|
---|
| 44 | * prior written permission.
|
---|
| 45 | *
|
---|
| 46 | * 3. Redistributions of any form whatsoever must retain the following
|
---|
| 47 | * acknowledgment:
|
---|
| 48 | * "This product includes software developed by Paul Mackerras
|
---|
| 49 | * <paulus@samba.org>".
|
---|
| 50 | *
|
---|
| 51 | * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
|
---|
| 52 | * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
---|
| 53 | * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
|
---|
| 54 | * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
---|
| 55 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
|
---|
| 56 | * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
|
---|
| 57 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
---|
| 58 | */
|
---|
| 59 |
|
---|
| 60 | #include "netif/ppp/ppp_opts.h"
|
---|
| 61 | #if PPP_SUPPORT && ECP_SUPPORT /* don't build if not configured for use in lwipopts.h */
|
---|
| 62 |
|
---|
| 63 | #include <string.h>
|
---|
| 64 |
|
---|
| 65 | #include "netif/ppp/ppp_impl.h"
|
---|
| 66 |
|
---|
| 67 | #include "netif/ppp/fsm.h"
|
---|
| 68 | #include "netif/ppp/ecp.h"
|
---|
| 69 |
|
---|
| 70 | #if PPP_OPTIONS
|
---|
| 71 | static option_t ecp_option_list[] = {
|
---|
| 72 | { "noecp", o_bool, &ecp_protent.enabled_flag,
|
---|
| 73 | "Disable ECP negotiation" },
|
---|
| 74 | { "-ecp", o_bool, &ecp_protent.enabled_flag,
|
---|
| 75 | "Disable ECP negotiation", OPT_ALIAS },
|
---|
| 76 |
|
---|
| 77 | { NULL }
|
---|
| 78 | };
|
---|
| 79 | #endif /* PPP_OPTIONS */
|
---|
| 80 |
|
---|
| 81 | /*
|
---|
| 82 | * Protocol entry points from main code.
|
---|
| 83 | */
|
---|
| 84 | static void ecp_init (int unit);
|
---|
| 85 | /*
|
---|
| 86 | static void ecp_open (int unit);
|
---|
| 87 | static void ecp_close (int unit, char *);
|
---|
| 88 | static void ecp_lowerup (int unit);
|
---|
| 89 | static void ecp_lowerdown (int);
|
---|
| 90 | static void ecp_input (int unit, u_char *pkt, int len);
|
---|
| 91 | static void ecp_protrej (int unit);
|
---|
| 92 | */
|
---|
| 93 | #if PRINTPKT_SUPPORT
|
---|
| 94 | static int ecp_printpkt (const u_char *pkt, int len,
|
---|
| 95 | void (*printer) (void *, char *, ...),
|
---|
| 96 | void *arg);
|
---|
| 97 | #endif /* PRINTPKT_SUPPORT */
|
---|
| 98 | /*
|
---|
| 99 | static void ecp_datainput (int unit, u_char *pkt, int len);
|
---|
| 100 | */
|
---|
| 101 |
|
---|
| 102 | const struct protent ecp_protent = {
|
---|
| 103 | PPP_ECP,
|
---|
| 104 | ecp_init,
|
---|
| 105 | NULL, /* ecp_input, */
|
---|
| 106 | NULL, /* ecp_protrej, */
|
---|
| 107 | NULL, /* ecp_lowerup, */
|
---|
| 108 | NULL, /* ecp_lowerdown, */
|
---|
| 109 | NULL, /* ecp_open, */
|
---|
| 110 | NULL, /* ecp_close, */
|
---|
| 111 | #if PRINTPKT_SUPPORT
|
---|
| 112 | ecp_printpkt,
|
---|
| 113 | #endif /* PRINTPKT_SUPPORT */
|
---|
| 114 | #if PPP_DATAINPUT
|
---|
| 115 | NULL, /* ecp_datainput, */
|
---|
| 116 | #endif /* PPP_DATAINPUT */
|
---|
| 117 | #if PRINTPKT_SUPPORT
|
---|
| 118 | "ECP",
|
---|
| 119 | "Encrypted",
|
---|
| 120 | #endif /* PRINTPKT_SUPPORT */
|
---|
| 121 | #if PPP_OPTIONS
|
---|
| 122 | ecp_option_list,
|
---|
| 123 | NULL,
|
---|
| 124 | #endif /* PPP_OPTIONS */
|
---|
| 125 | #if DEMAND_SUPPORT
|
---|
| 126 | NULL,
|
---|
| 127 | NULL
|
---|
| 128 | #endif /* DEMAND_SUPPORT */
|
---|
| 129 | };
|
---|
| 130 |
|
---|
| 131 | fsm ecp_fsm[NUM_PPP];
|
---|
| 132 | ecp_options ecp_wantoptions[NUM_PPP]; /* what to request the peer to use */
|
---|
| 133 | ecp_options ecp_gotoptions[NUM_PPP]; /* what the peer agreed to do */
|
---|
| 134 | ecp_options ecp_allowoptions[NUM_PPP]; /* what we'll agree to do */
|
---|
| 135 | ecp_options ecp_hisoptions[NUM_PPP]; /* what we agreed to do */
|
---|
| 136 |
|
---|
| 137 | static const fsm_callbacks ecp_callbacks = {
|
---|
| 138 | NULL, /* ecp_resetci, */
|
---|
| 139 | NULL, /* ecp_cilen, */
|
---|
| 140 | NULL, /* ecp_addci, */
|
---|
| 141 | NULL, /* ecp_ackci, */
|
---|
| 142 | NULL, /* ecp_nakci, */
|
---|
| 143 | NULL, /* ecp_rejci, */
|
---|
| 144 | NULL, /* ecp_reqci, */
|
---|
| 145 | NULL, /* ecp_up, */
|
---|
| 146 | NULL, /* ecp_down, */
|
---|
| 147 | NULL,
|
---|
| 148 | NULL,
|
---|
| 149 | NULL,
|
---|
| 150 | NULL,
|
---|
| 151 | NULL, /* ecp_extcode, */
|
---|
| 152 | "ECP"
|
---|
| 153 | };
|
---|
| 154 |
|
---|
| 155 | /*
|
---|
| 156 | * ecp_init - initialize ECP.
|
---|
| 157 | */
|
---|
| 158 | static void
|
---|
| 159 | ecp_init(unit)
|
---|
| 160 | int unit;
|
---|
| 161 | {
|
---|
| 162 | fsm *f = &ecp_fsm[unit];
|
---|
| 163 |
|
---|
| 164 | f->unit = unit;
|
---|
| 165 | f->protocol = PPP_ECP;
|
---|
| 166 | f->callbacks = &ecp_callbacks;
|
---|
| 167 | fsm_init(f);
|
---|
| 168 |
|
---|
| 169 | #if 0 /* Not necessary, everything is cleared in ppp_new() */
|
---|
| 170 | memset(&ecp_wantoptions[unit], 0, sizeof(ecp_options));
|
---|
| 171 | memset(&ecp_gotoptions[unit], 0, sizeof(ecp_options));
|
---|
| 172 | memset(&ecp_allowoptions[unit], 0, sizeof(ecp_options));
|
---|
| 173 | memset(&ecp_hisoptions[unit], 0, sizeof(ecp_options));
|
---|
| 174 | #endif /* 0 */
|
---|
| 175 |
|
---|
| 176 | }
|
---|
| 177 |
|
---|
| 178 |
|
---|
| 179 | #if PRINTPKT_SUPPORT
|
---|
| 180 | static int
|
---|
| 181 | ecp_printpkt(p, plen, printer, arg)
|
---|
| 182 | const u_char *p;
|
---|
| 183 | int plen;
|
---|
| 184 | void (*printer) (void *, char *, ...);
|
---|
| 185 | void *arg;
|
---|
| 186 | {
|
---|
| 187 | return 0;
|
---|
| 188 | }
|
---|
| 189 | #endif /* PRINTPKT_SUPPORT */
|
---|
| 190 |
|
---|
| 191 | #endif /* PPP_SUPPORT && ECP_SUPPORT */
|
---|