pppd/ecp.c

   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 #define RCSID   "$Id: ecp.c,v 1.4 2004/11/04 10:02:26 paulus Exp $"
  61
  62 static const char rcsid[] = RCSID;
  63
  64 #include <string.h>
  65
  66 #include "pppd.h"
  67 #include "fsm.h"
  68 #include "ecp.h"
  69
  70 static option_t ecp_option_list[] = {
  71     { "noecp", o_bool, &ecp_protent.enabled_flag,
  72       "Disable ECP negotiation" },
  73     { "-ecp", o_bool, &ecp_protent.enabled_flag,
  74       "Disable ECP negotiation", OPT_ALIAS },
  75
  76     { NULL }
  77 };
  78
  79 /*
  80  * Protocol entry points from main code.
  81  */
  82 static void ecp_init __P((int unit));
  83 /*
  84 static void ecp_open __P((int unit));
  85 static void ecp_close __P((int unit, char *));
  86 static void ecp_lowerup __P((int unit));
  87 static void ecp_lowerdown __P((int));
  88 static void ecp_input __P((int unit, u_char *pkt, int len));
  89 static void ecp_protrej __P((int unit));
  90 */
  91 static int  ecp_printpkt __P((u_char *pkt, int len,
  92                               void (*printer) __P((void *, char *, ...)),
  93                               void *arg));
  94 /*
  95 static void ecp_datainput __P((int unit, u_char *pkt, int len));
  96 */
  97
  98 struct protent ecp_protent = {
  99     PPP_ECP,
 100     ecp_init,
 101     NULL, /* ecp_input, */
 102     NULL, /* ecp_protrej, */
 103     NULL, /* ecp_lowerup, */
 104     NULL, /* ecp_lowerdown, */
 105     NULL, /* ecp_open, */
 106     NULL, /* ecp_close, */
 107     ecp_printpkt,
 108     NULL, /* ecp_datainput, */
 109     0,
 110     "ECP",
 111     "Encrypted",
 112     ecp_option_list,
 113     NULL,
 114     NULL,
 115     NULL
 116 };
 117
 118 fsm ecp_fsm[NUM_PPP];
 119 ecp_options ecp_wantoptions[NUM_PPP];   /* what to request the peer to use */
 120 ecp_options ecp_gotoptions[NUM_PPP];    /* what the peer agreed to do */
 121 ecp_options ecp_allowoptions[NUM_PPP];  /* what we'll agree to do */
 122 ecp_options ecp_hisoptions[NUM_PPP];    /* what we agreed to do */
 123
 124 static fsm_callbacks ecp_callbacks = {
 125     NULL, /* ecp_resetci, */
 126     NULL, /* ecp_cilen, */
 127     NULL, /* ecp_addci, */
 128     NULL, /* ecp_ackci, */
 129     NULL, /* ecp_nakci, */
 130     NULL, /* ecp_rejci, */
 131     NULL, /* ecp_reqci, */
 132     NULL, /* ecp_up, */
 133     NULL, /* ecp_down, */
 134     NULL,
 135     NULL,
 136     NULL,
 137     NULL,
 138     NULL, /* ecp_extcode, */
 139     "ECP"
 140 };
 141
 142 /*
 143  * ecp_init - initialize ECP.
 144  */
 145 static void
 146 ecp_init(unit)
 147     int unit;
 148 {
 149     fsm *f = &ecp_fsm[unit];
 150
 151     f->unit = unit;
 152     f->protocol = PPP_ECP;
 153     f->callbacks = &ecp_callbacks;
 154     fsm_init(f);
 155
 156     memset(&ecp_wantoptions[unit],  0, sizeof(ecp_options));
 157     memset(&ecp_gotoptions[unit],   0, sizeof(ecp_options));
 158     memset(&ecp_allowoptions[unit], 0, sizeof(ecp_options));
 159     memset(&ecp_hisoptions[unit],   0, sizeof(ecp_options));
 160
 161 }
 162
 163
 164 static int
 165 ecp_printpkt(p, plen, printer, arg)
 166     u_char *p;
 167     int plen;
 168     void (*printer) __P((void *, char *, ...));
 169     void *arg;
 170 {
 171     return 0;
 172 }
 173