2 * ecp.c - PPP Encryption Control Protocol.
4 * Copyright (c) 2002 Google, Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
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
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.
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.
31 * Derived from ccp.c, which is:
33 * Copyright (c) 1994-2002 Paul Mackerras. All rights reserved.
35 * Redistribution and use in source and binary forms, with or without
36 * modification, are permitted provided that the following conditions
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
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.
46 * 3. Redistributions of any form whatsoever must retain the following
48 * "This product includes software developed by Paul Mackerras
49 * <paulus@ozlabs.org>".
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.
66 #include "pppd-private.h"
71 static struct option 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 },
81 * Protocol entry points from main code.
83 static void ecp_init (int unit);
85 static void ecp_open (int unit);
86 static void ecp_close (int unit, char *);
87 static void ecp_lowerup (int unit);
88 static void ecp_lowerdown (int);
89 static void ecp_input (int unit, u_char *pkt, int len);
90 static void ecp_protrej (int unit);
92 static int ecp_printpkt (u_char *pkt, int len,
93 void (*printer)(void *, char *, ...),
96 static void ecp_datainput (int unit, u_char *pkt, int len);
99 struct protent ecp_protent = {
102 NULL, /* ecp_input, */
103 NULL, /* ecp_protrej, */
104 NULL, /* ecp_lowerup, */
105 NULL, /* ecp_lowerdown, */
106 NULL, /* ecp_open, */
107 NULL, /* ecp_close, */
109 NULL, /* ecp_datainput, */
119 fsm ecp_fsm[NUM_PPP];
120 ecp_options ecp_wantoptions[NUM_PPP]; /* what to request the peer to use */
121 ecp_options ecp_gotoptions[NUM_PPP]; /* what the peer agreed to do */
122 ecp_options ecp_allowoptions[NUM_PPP]; /* what we'll agree to do */
123 ecp_options ecp_hisoptions[NUM_PPP]; /* what we agreed to do */
125 static fsm_callbacks ecp_callbacks = {
126 NULL, /* ecp_resetci, */
127 NULL, /* ecp_cilen, */
128 NULL, /* ecp_addci, */
129 NULL, /* ecp_ackci, */
130 NULL, /* ecp_nakci, */
131 NULL, /* ecp_rejci, */
132 NULL, /* ecp_reqci, */
134 NULL, /* ecp_down, */
139 NULL, /* ecp_extcode, */
144 * ecp_init - initialize ECP.
149 fsm *f = &ecp_fsm[unit];
152 f->protocol = PPP_ECP;
153 f->callbacks = &ecp_callbacks;
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));
165 ecp_printpkt(u_char *p, int plen,
166 void (*printer)(void *, char *, ...), void *arg)