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
71static 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 */
84static void ecp_init (int unit);
85/*
86static void ecp_open (int unit);
87static void ecp_close (int unit, char *);
88static void ecp_lowerup (int unit);
89static void ecp_lowerdown (int);
90static void ecp_input (int unit, u_char *pkt, int len);
91static void ecp_protrej (int unit);
92*/
93#if PRINTPKT_SUPPORT
94static int  ecp_printpkt (const u_char *pkt, int len,
95			      void (*printer) (void *, char *, ...),
96			      void *arg);
97#endif /* PRINTPKT_SUPPORT */
98/*
99static void ecp_datainput (int unit, u_char *pkt, int len);
100*/
101
102const 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
131fsm ecp_fsm[NUM_PPP];
132ecp_options ecp_wantoptions[NUM_PPP];	/* what to request the peer to use */
133ecp_options ecp_gotoptions[NUM_PPP];	/* what the peer agreed to do */
134ecp_options ecp_allowoptions[NUM_PPP];	/* what we'll agree to do */
135ecp_options ecp_hisoptions[NUM_PPP];	/* what we agreed to do */
136
137static 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 */
158static void
159ecp_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
180static int
181ecp_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 */
192