孙 毅明 / Mbed 2 deprecated 123

创建mbed

Dependencies:   EthernetInterface SDFileSystem mbed-rtos mbed

EthernetInterface/lwip/netif/ppp/pap.c@1:6465a3f5c58a, 2018-03-06 (annotated)

Committer:
sunyiming
Date:
Tue Mar 06 08:53:46 2018 +0000
Revision:
1:6465a3f5c58a
??OK

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sunyiming 1:6465a3f5c58a 1 /*****************************************************************************
sunyiming 1:6465a3f5c58a 2 * pap.c - Network Password Authentication Protocol program file.
sunyiming 1:6465a3f5c58a 3 *
sunyiming 1:6465a3f5c58a 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
sunyiming 1:6465a3f5c58a 5 * portions Copyright (c) 1997 by Global Election Systems Inc.
sunyiming 1:6465a3f5c58a 6 *
sunyiming 1:6465a3f5c58a 7 * The authors hereby grant permission to use, copy, modify, distribute,
sunyiming 1:6465a3f5c58a 8 * and license this software and its documentation for any purpose, provided
sunyiming 1:6465a3f5c58a 9 * that existing copyright notices are retained in all copies and that this
sunyiming 1:6465a3f5c58a 10 * notice and the following disclaimer are included verbatim in any
sunyiming 1:6465a3f5c58a 11 * distributions. No written agreement, license, or royalty fee is required
sunyiming 1:6465a3f5c58a 12 * for any of the authorized uses.
sunyiming 1:6465a3f5c58a 13 *
sunyiming 1:6465a3f5c58a 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
sunyiming 1:6465a3f5c58a 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
sunyiming 1:6465a3f5c58a 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
sunyiming 1:6465a3f5c58a 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
sunyiming 1:6465a3f5c58a 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sunyiming 1:6465a3f5c58a 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
sunyiming 1:6465a3f5c58a 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
sunyiming 1:6465a3f5c58a 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
sunyiming 1:6465a3f5c58a 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
sunyiming 1:6465a3f5c58a 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
sunyiming 1:6465a3f5c58a 24 *
sunyiming 1:6465a3f5c58a 25 ******************************************************************************
sunyiming 1:6465a3f5c58a 26 * REVISION HISTORY
sunyiming 1:6465a3f5c58a 27 *
sunyiming 1:6465a3f5c58a 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
sunyiming 1:6465a3f5c58a 29 * Ported to lwIP.
sunyiming 1:6465a3f5c58a 30 * 97-12-12 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
sunyiming 1:6465a3f5c58a 31 * Original.
sunyiming 1:6465a3f5c58a 32 *****************************************************************************/
sunyiming 1:6465a3f5c58a 33 /*
sunyiming 1:6465a3f5c58a 34 * upap.c - User/Password Authentication Protocol.
sunyiming 1:6465a3f5c58a 35 *
sunyiming 1:6465a3f5c58a 36 * Copyright (c) 1989 Carnegie Mellon University.
sunyiming 1:6465a3f5c58a 37 * All rights reserved.
sunyiming 1:6465a3f5c58a 38 *
sunyiming 1:6465a3f5c58a 39 * Redistribution and use in source and binary forms are permitted
sunyiming 1:6465a3f5c58a 40 * provided that the above copyright notice and this paragraph are
sunyiming 1:6465a3f5c58a 41 * duplicated in all such forms and that any documentation,
sunyiming 1:6465a3f5c58a 42 * advertising materials, and other materials related to such
sunyiming 1:6465a3f5c58a 43 * distribution and use acknowledge that the software was developed
sunyiming 1:6465a3f5c58a 44 * by Carnegie Mellon University. The name of the
sunyiming 1:6465a3f5c58a 45 * University may not be used to endorse or promote products derived
sunyiming 1:6465a3f5c58a 46 * from this software without specific prior written permission.
sunyiming 1:6465a3f5c58a 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
sunyiming 1:6465a3f5c58a 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
sunyiming 1:6465a3f5c58a 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
sunyiming 1:6465a3f5c58a 50 */
sunyiming 1:6465a3f5c58a 51
sunyiming 1:6465a3f5c58a 52 #include "lwip/opt.h"
sunyiming 1:6465a3f5c58a 53
sunyiming 1:6465a3f5c58a 54 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
sunyiming 1:6465a3f5c58a 55
sunyiming 1:6465a3f5c58a 56 #if PAP_SUPPORT /* don't build if not configured for use in lwipopts.h */
sunyiming 1:6465a3f5c58a 57
sunyiming 1:6465a3f5c58a 58 #include "ppp.h"
sunyiming 1:6465a3f5c58a 59 #include "pppdebug.h"
sunyiming 1:6465a3f5c58a 60
sunyiming 1:6465a3f5c58a 61 #include "auth.h"
sunyiming 1:6465a3f5c58a 62 #include "pap.h"
sunyiming 1:6465a3f5c58a 63
sunyiming 1:6465a3f5c58a 64 #include <string.h>
sunyiming 1:6465a3f5c58a 65
sunyiming 1:6465a3f5c58a 66 #if 0 /* UNUSED */
sunyiming 1:6465a3f5c58a 67 static bool hide_password = 1;
sunyiming 1:6465a3f5c58a 68
sunyiming 1:6465a3f5c58a 69 /*
sunyiming 1:6465a3f5c58a 70 * Command-line options.
sunyiming 1:6465a3f5c58a 71 */
sunyiming 1:6465a3f5c58a 72 static option_t pap_option_list[] = {
sunyiming 1:6465a3f5c58a 73 { "hide-password", o_bool, &hide_password,
sunyiming 1:6465a3f5c58a 74 "Don't output passwords to log", 1 },
sunyiming 1:6465a3f5c58a 75 { "show-password", o_bool, &hide_password,
sunyiming 1:6465a3f5c58a 76 "Show password string in debug log messages", 0 },
sunyiming 1:6465a3f5c58a 77 { "pap-restart", o_int, &upap[0].us_timeouttime,
sunyiming 1:6465a3f5c58a 78 "Set retransmit timeout for PAP" },
sunyiming 1:6465a3f5c58a 79 { "pap-max-authreq", o_int, &upap[0].us_maxtransmits,
sunyiming 1:6465a3f5c58a 80 "Set max number of transmissions for auth-reqs" },
sunyiming 1:6465a3f5c58a 81 { "pap-timeout", o_int, &upap[0].us_reqtimeout,
sunyiming 1:6465a3f5c58a 82 "Set time limit for peer PAP authentication" },
sunyiming 1:6465a3f5c58a 83 { NULL }
sunyiming 1:6465a3f5c58a 84 };
sunyiming 1:6465a3f5c58a 85 #endif
sunyiming 1:6465a3f5c58a 86
sunyiming 1:6465a3f5c58a 87 /*
sunyiming 1:6465a3f5c58a 88 * Protocol entry points.
sunyiming 1:6465a3f5c58a 89 */
sunyiming 1:6465a3f5c58a 90 static void upap_init (int);
sunyiming 1:6465a3f5c58a 91 static void upap_lowerup (int);
sunyiming 1:6465a3f5c58a 92 static void upap_lowerdown (int);
sunyiming 1:6465a3f5c58a 93 static void upap_input (int, u_char *, int);
sunyiming 1:6465a3f5c58a 94 static void upap_protrej (int);
sunyiming 1:6465a3f5c58a 95 #if PPP_ADDITIONAL_CALLBACKS
sunyiming 1:6465a3f5c58a 96 static int upap_printpkt (u_char *, int, void (*)(void *, char *, ...), void *);
sunyiming 1:6465a3f5c58a 97 #endif /* PPP_ADDITIONAL_CALLBACKS */
sunyiming 1:6465a3f5c58a 98
sunyiming 1:6465a3f5c58a 99 struct protent pap_protent = {
sunyiming 1:6465a3f5c58a 100 PPP_PAP,
sunyiming 1:6465a3f5c58a 101 upap_init,
sunyiming 1:6465a3f5c58a 102 upap_input,
sunyiming 1:6465a3f5c58a 103 upap_protrej,
sunyiming 1:6465a3f5c58a 104 upap_lowerup,
sunyiming 1:6465a3f5c58a 105 upap_lowerdown,
sunyiming 1:6465a3f5c58a 106 NULL,
sunyiming 1:6465a3f5c58a 107 NULL,
sunyiming 1:6465a3f5c58a 108 #if PPP_ADDITIONAL_CALLBACKS
sunyiming 1:6465a3f5c58a 109 upap_printpkt,
sunyiming 1:6465a3f5c58a 110 NULL,
sunyiming 1:6465a3f5c58a 111 #endif /* PPP_ADDITIONAL_CALLBACKS */
sunyiming 1:6465a3f5c58a 112 1,
sunyiming 1:6465a3f5c58a 113 "PAP",
sunyiming 1:6465a3f5c58a 114 #if PPP_ADDITIONAL_CALLBACKS
sunyiming 1:6465a3f5c58a 115 NULL,
sunyiming 1:6465a3f5c58a 116 NULL,
sunyiming 1:6465a3f5c58a 117 NULL
sunyiming 1:6465a3f5c58a 118 #endif /* PPP_ADDITIONAL_CALLBACKS */
sunyiming 1:6465a3f5c58a 119 };
sunyiming 1:6465a3f5c58a 120
sunyiming 1:6465a3f5c58a 121 upap_state upap[NUM_PPP]; /* UPAP state; one for each unit */
sunyiming 1:6465a3f5c58a 122
sunyiming 1:6465a3f5c58a 123 static void upap_timeout (void *);
sunyiming 1:6465a3f5c58a 124 static void upap_reqtimeout(void *);
sunyiming 1:6465a3f5c58a 125 static void upap_rauthreq (upap_state *, u_char *, u_char, int);
sunyiming 1:6465a3f5c58a 126 static void upap_rauthack (upap_state *, u_char *, int, int);
sunyiming 1:6465a3f5c58a 127 static void upap_rauthnak (upap_state *, u_char *, int, int);
sunyiming 1:6465a3f5c58a 128 static void upap_sauthreq (upap_state *);
sunyiming 1:6465a3f5c58a 129 static void upap_sresp (upap_state *, u_char, u_char, char *, int);
sunyiming 1:6465a3f5c58a 130
sunyiming 1:6465a3f5c58a 131
sunyiming 1:6465a3f5c58a 132 /*
sunyiming 1:6465a3f5c58a 133 * upap_init - Initialize a UPAP unit.
sunyiming 1:6465a3f5c58a 134 */
sunyiming 1:6465a3f5c58a 135 static void
sunyiming 1:6465a3f5c58a 136 upap_init(int unit)
sunyiming 1:6465a3f5c58a 137 {
sunyiming 1:6465a3f5c58a 138 upap_state *u = &upap[unit];
sunyiming 1:6465a3f5c58a 139
sunyiming 1:6465a3f5c58a 140 UPAPDEBUG(LOG_INFO, ("upap_init: %d\n", unit));
sunyiming 1:6465a3f5c58a 141 u->us_unit = unit;
sunyiming 1:6465a3f5c58a 142 u->us_user = NULL;
sunyiming 1:6465a3f5c58a 143 u->us_userlen = 0;
sunyiming 1:6465a3f5c58a 144 u->us_passwd = NULL;
sunyiming 1:6465a3f5c58a 145 u->us_passwdlen = 0;
sunyiming 1:6465a3f5c58a 146 u->us_clientstate = UPAPCS_INITIAL;
sunyiming 1:6465a3f5c58a 147 u->us_serverstate = UPAPSS_INITIAL;
sunyiming 1:6465a3f5c58a 148 u->us_id = 0;
sunyiming 1:6465a3f5c58a 149 u->us_timeouttime = UPAP_DEFTIMEOUT;
sunyiming 1:6465a3f5c58a 150 u->us_maxtransmits = 10;
sunyiming 1:6465a3f5c58a 151 u->us_reqtimeout = UPAP_DEFREQTIME;
sunyiming 1:6465a3f5c58a 152 }
sunyiming 1:6465a3f5c58a 153
sunyiming 1:6465a3f5c58a 154 /*
sunyiming 1:6465a3f5c58a 155 * upap_authwithpeer - Authenticate us with our peer (start client).
sunyiming 1:6465a3f5c58a 156 *
sunyiming 1:6465a3f5c58a 157 * Set new state and send authenticate's.
sunyiming 1:6465a3f5c58a 158 */
sunyiming 1:6465a3f5c58a 159 void
sunyiming 1:6465a3f5c58a 160 upap_authwithpeer(int unit, char *user, char *password)
sunyiming 1:6465a3f5c58a 161 {
sunyiming 1:6465a3f5c58a 162 upap_state *u = &upap[unit];
sunyiming 1:6465a3f5c58a 163
sunyiming 1:6465a3f5c58a 164 UPAPDEBUG(LOG_INFO, ("upap_authwithpeer: %d user=%s password=%s s=%d\n",
sunyiming 1:6465a3f5c58a 165 unit, user, password, u->us_clientstate));
sunyiming 1:6465a3f5c58a 166
sunyiming 1:6465a3f5c58a 167 /* Save the username and password we're given */
sunyiming 1:6465a3f5c58a 168 u->us_user = user;
sunyiming 1:6465a3f5c58a 169 u->us_userlen = (int)strlen(user);
sunyiming 1:6465a3f5c58a 170 u->us_passwd = password;
sunyiming 1:6465a3f5c58a 171 u->us_passwdlen = (int)strlen(password);
sunyiming 1:6465a3f5c58a 172
sunyiming 1:6465a3f5c58a 173 u->us_transmits = 0;
sunyiming 1:6465a3f5c58a 174
sunyiming 1:6465a3f5c58a 175 /* Lower layer up yet? */
sunyiming 1:6465a3f5c58a 176 if (u->us_clientstate == UPAPCS_INITIAL ||
sunyiming 1:6465a3f5c58a 177 u->us_clientstate == UPAPCS_PENDING) {
sunyiming 1:6465a3f5c58a 178 u->us_clientstate = UPAPCS_PENDING;
sunyiming 1:6465a3f5c58a 179 return;
sunyiming 1:6465a3f5c58a 180 }
sunyiming 1:6465a3f5c58a 181
sunyiming 1:6465a3f5c58a 182 upap_sauthreq(u); /* Start protocol */
sunyiming 1:6465a3f5c58a 183 }
sunyiming 1:6465a3f5c58a 184
sunyiming 1:6465a3f5c58a 185
sunyiming 1:6465a3f5c58a 186 /*
sunyiming 1:6465a3f5c58a 187 * upap_authpeer - Authenticate our peer (start server).
sunyiming 1:6465a3f5c58a 188 *
sunyiming 1:6465a3f5c58a 189 * Set new state.
sunyiming 1:6465a3f5c58a 190 */
sunyiming 1:6465a3f5c58a 191 void
sunyiming 1:6465a3f5c58a 192 upap_authpeer(int unit)
sunyiming 1:6465a3f5c58a 193 {
sunyiming 1:6465a3f5c58a 194 upap_state *u = &upap[unit];
sunyiming 1:6465a3f5c58a 195
sunyiming 1:6465a3f5c58a 196 /* Lower layer up yet? */
sunyiming 1:6465a3f5c58a 197 if (u->us_serverstate == UPAPSS_INITIAL ||
sunyiming 1:6465a3f5c58a 198 u->us_serverstate == UPAPSS_PENDING) {
sunyiming 1:6465a3f5c58a 199 u->us_serverstate = UPAPSS_PENDING;
sunyiming 1:6465a3f5c58a 200 return;
sunyiming 1:6465a3f5c58a 201 }
sunyiming 1:6465a3f5c58a 202
sunyiming 1:6465a3f5c58a 203 u->us_serverstate = UPAPSS_LISTEN;
sunyiming 1:6465a3f5c58a 204 if (u->us_reqtimeout > 0) {
sunyiming 1:6465a3f5c58a 205 TIMEOUT(upap_reqtimeout, u, u->us_reqtimeout);
sunyiming 1:6465a3f5c58a 206 }
sunyiming 1:6465a3f5c58a 207 }
sunyiming 1:6465a3f5c58a 208
sunyiming 1:6465a3f5c58a 209 /*
sunyiming 1:6465a3f5c58a 210 * upap_timeout - Retransmission timer for sending auth-reqs expired.
sunyiming 1:6465a3f5c58a 211 */
sunyiming 1:6465a3f5c58a 212 static void
sunyiming 1:6465a3f5c58a 213 upap_timeout(void *arg)
sunyiming 1:6465a3f5c58a 214 {
sunyiming 1:6465a3f5c58a 215 upap_state *u = (upap_state *) arg;
sunyiming 1:6465a3f5c58a 216
sunyiming 1:6465a3f5c58a 217 UPAPDEBUG(LOG_INFO, ("upap_timeout: %d timeout %d expired s=%d\n",
sunyiming 1:6465a3f5c58a 218 u->us_unit, u->us_timeouttime, u->us_clientstate));
sunyiming 1:6465a3f5c58a 219
sunyiming 1:6465a3f5c58a 220 if (u->us_clientstate != UPAPCS_AUTHREQ) {
sunyiming 1:6465a3f5c58a 221 UPAPDEBUG(LOG_INFO, ("upap_timeout: not in AUTHREQ state!\n"));
sunyiming 1:6465a3f5c58a 222 return;
sunyiming 1:6465a3f5c58a 223 }
sunyiming 1:6465a3f5c58a 224
sunyiming 1:6465a3f5c58a 225 if (u->us_transmits >= u->us_maxtransmits) {
sunyiming 1:6465a3f5c58a 226 /* give up in disgust */
sunyiming 1:6465a3f5c58a 227 UPAPDEBUG(LOG_ERR, ("No response to PAP authenticate-requests\n"));
sunyiming 1:6465a3f5c58a 228 u->us_clientstate = UPAPCS_BADAUTH;
sunyiming 1:6465a3f5c58a 229 auth_withpeer_fail(u->us_unit, PPP_PAP);
sunyiming 1:6465a3f5c58a 230 return;
sunyiming 1:6465a3f5c58a 231 }
sunyiming 1:6465a3f5c58a 232
sunyiming 1:6465a3f5c58a 233 upap_sauthreq(u); /* Send Authenticate-Request and set upap timeout*/
sunyiming 1:6465a3f5c58a 234 }
sunyiming 1:6465a3f5c58a 235
sunyiming 1:6465a3f5c58a 236
sunyiming 1:6465a3f5c58a 237 /*
sunyiming 1:6465a3f5c58a 238 * upap_reqtimeout - Give up waiting for the peer to send an auth-req.
sunyiming 1:6465a3f5c58a 239 */
sunyiming 1:6465a3f5c58a 240 static void
sunyiming 1:6465a3f5c58a 241 upap_reqtimeout(void *arg)
sunyiming 1:6465a3f5c58a 242 {
sunyiming 1:6465a3f5c58a 243 upap_state *u = (upap_state *) arg;
sunyiming 1:6465a3f5c58a 244
sunyiming 1:6465a3f5c58a 245 if (u->us_serverstate != UPAPSS_LISTEN) {
sunyiming 1:6465a3f5c58a 246 return; /* huh?? */
sunyiming 1:6465a3f5c58a 247 }
sunyiming 1:6465a3f5c58a 248
sunyiming 1:6465a3f5c58a 249 auth_peer_fail(u->us_unit, PPP_PAP);
sunyiming 1:6465a3f5c58a 250 u->us_serverstate = UPAPSS_BADAUTH;
sunyiming 1:6465a3f5c58a 251 }
sunyiming 1:6465a3f5c58a 252
sunyiming 1:6465a3f5c58a 253
sunyiming 1:6465a3f5c58a 254 /*
sunyiming 1:6465a3f5c58a 255 * upap_lowerup - The lower layer is up.
sunyiming 1:6465a3f5c58a 256 *
sunyiming 1:6465a3f5c58a 257 * Start authenticating if pending.
sunyiming 1:6465a3f5c58a 258 */
sunyiming 1:6465a3f5c58a 259 static void
sunyiming 1:6465a3f5c58a 260 upap_lowerup(int unit)
sunyiming 1:6465a3f5c58a 261 {
sunyiming 1:6465a3f5c58a 262 upap_state *u = &upap[unit];
sunyiming 1:6465a3f5c58a 263
sunyiming 1:6465a3f5c58a 264 UPAPDEBUG(LOG_INFO, ("upap_lowerup: init %d clientstate s=%d\n", unit, u->us_clientstate));
sunyiming 1:6465a3f5c58a 265
sunyiming 1:6465a3f5c58a 266 if (u->us_clientstate == UPAPCS_INITIAL) {
sunyiming 1:6465a3f5c58a 267 u->us_clientstate = UPAPCS_CLOSED;
sunyiming 1:6465a3f5c58a 268 } else if (u->us_clientstate == UPAPCS_PENDING) {
sunyiming 1:6465a3f5c58a 269 upap_sauthreq(u); /* send an auth-request */
sunyiming 1:6465a3f5c58a 270 /* now client state is UPAPCS__AUTHREQ */
sunyiming 1:6465a3f5c58a 271 }
sunyiming 1:6465a3f5c58a 272
sunyiming 1:6465a3f5c58a 273 if (u->us_serverstate == UPAPSS_INITIAL) {
sunyiming 1:6465a3f5c58a 274 u->us_serverstate = UPAPSS_CLOSED;
sunyiming 1:6465a3f5c58a 275 } else if (u->us_serverstate == UPAPSS_PENDING) {
sunyiming 1:6465a3f5c58a 276 u->us_serverstate = UPAPSS_LISTEN;
sunyiming 1:6465a3f5c58a 277 if (u->us_reqtimeout > 0) {
sunyiming 1:6465a3f5c58a 278 TIMEOUT(upap_reqtimeout, u, u->us_reqtimeout);
sunyiming 1:6465a3f5c58a 279 }
sunyiming 1:6465a3f5c58a 280 }
sunyiming 1:6465a3f5c58a 281 }
sunyiming 1:6465a3f5c58a 282
sunyiming 1:6465a3f5c58a 283
sunyiming 1:6465a3f5c58a 284 /*
sunyiming 1:6465a3f5c58a 285 * upap_lowerdown - The lower layer is down.
sunyiming 1:6465a3f5c58a 286 *
sunyiming 1:6465a3f5c58a 287 * Cancel all timeouts.
sunyiming 1:6465a3f5c58a 288 */
sunyiming 1:6465a3f5c58a 289 static void
sunyiming 1:6465a3f5c58a 290 upap_lowerdown(int unit)
sunyiming 1:6465a3f5c58a 291 {
sunyiming 1:6465a3f5c58a 292 upap_state *u = &upap[unit];
sunyiming 1:6465a3f5c58a 293
sunyiming 1:6465a3f5c58a 294 UPAPDEBUG(LOG_INFO, ("upap_lowerdown: %d s=%d\n", unit, u->us_clientstate));
sunyiming 1:6465a3f5c58a 295
sunyiming 1:6465a3f5c58a 296 if (u->us_clientstate == UPAPCS_AUTHREQ) { /* Timeout pending? */
sunyiming 1:6465a3f5c58a 297 UNTIMEOUT(upap_timeout, u); /* Cancel timeout */
sunyiming 1:6465a3f5c58a 298 }
sunyiming 1:6465a3f5c58a 299 if (u->us_serverstate == UPAPSS_LISTEN && u->us_reqtimeout > 0) {
sunyiming 1:6465a3f5c58a 300 UNTIMEOUT(upap_reqtimeout, u);
sunyiming 1:6465a3f5c58a 301 }
sunyiming 1:6465a3f5c58a 302
sunyiming 1:6465a3f5c58a 303 u->us_clientstate = UPAPCS_INITIAL;
sunyiming 1:6465a3f5c58a 304 u->us_serverstate = UPAPSS_INITIAL;
sunyiming 1:6465a3f5c58a 305 }
sunyiming 1:6465a3f5c58a 306
sunyiming 1:6465a3f5c58a 307
sunyiming 1:6465a3f5c58a 308 /*
sunyiming 1:6465a3f5c58a 309 * upap_protrej - Peer doesn't speak this protocol.
sunyiming 1:6465a3f5c58a 310 *
sunyiming 1:6465a3f5c58a 311 * This shouldn't happen. In any case, pretend lower layer went down.
sunyiming 1:6465a3f5c58a 312 */
sunyiming 1:6465a3f5c58a 313 static void
sunyiming 1:6465a3f5c58a 314 upap_protrej(int unit)
sunyiming 1:6465a3f5c58a 315 {
sunyiming 1:6465a3f5c58a 316 upap_state *u = &upap[unit];
sunyiming 1:6465a3f5c58a 317
sunyiming 1:6465a3f5c58a 318 if (u->us_clientstate == UPAPCS_AUTHREQ) {
sunyiming 1:6465a3f5c58a 319 UPAPDEBUG(LOG_ERR, ("PAP authentication failed due to protocol-reject\n"));
sunyiming 1:6465a3f5c58a 320 auth_withpeer_fail(unit, PPP_PAP);
sunyiming 1:6465a3f5c58a 321 }
sunyiming 1:6465a3f5c58a 322 if (u->us_serverstate == UPAPSS_LISTEN) {
sunyiming 1:6465a3f5c58a 323 UPAPDEBUG(LOG_ERR, ("PAP authentication of peer failed (protocol-reject)\n"));
sunyiming 1:6465a3f5c58a 324 auth_peer_fail(unit, PPP_PAP);
sunyiming 1:6465a3f5c58a 325 }
sunyiming 1:6465a3f5c58a 326 upap_lowerdown(unit);
sunyiming 1:6465a3f5c58a 327 }
sunyiming 1:6465a3f5c58a 328
sunyiming 1:6465a3f5c58a 329
sunyiming 1:6465a3f5c58a 330 /*
sunyiming 1:6465a3f5c58a 331 * upap_input - Input UPAP packet.
sunyiming 1:6465a3f5c58a 332 */
sunyiming 1:6465a3f5c58a 333 static void
sunyiming 1:6465a3f5c58a 334 upap_input(int unit, u_char *inpacket, int l)
sunyiming 1:6465a3f5c58a 335 {
sunyiming 1:6465a3f5c58a 336 upap_state *u = &upap[unit];
sunyiming 1:6465a3f5c58a 337 u_char *inp;
sunyiming 1:6465a3f5c58a 338 u_char code, id;
sunyiming 1:6465a3f5c58a 339 int len;
sunyiming 1:6465a3f5c58a 340
sunyiming 1:6465a3f5c58a 341 /*
sunyiming 1:6465a3f5c58a 342 * Parse header (code, id and length).
sunyiming 1:6465a3f5c58a 343 * If packet too short, drop it.
sunyiming 1:6465a3f5c58a 344 */
sunyiming 1:6465a3f5c58a 345 inp = inpacket;
sunyiming 1:6465a3f5c58a 346 if (l < (int)UPAP_HEADERLEN) {
sunyiming 1:6465a3f5c58a 347 UPAPDEBUG(LOG_INFO, ("pap_input: rcvd short header.\n"));
sunyiming 1:6465a3f5c58a 348 return;
sunyiming 1:6465a3f5c58a 349 }
sunyiming 1:6465a3f5c58a 350 GETCHAR(code, inp);
sunyiming 1:6465a3f5c58a 351 GETCHAR(id, inp);
sunyiming 1:6465a3f5c58a 352 GETSHORT(len, inp);
sunyiming 1:6465a3f5c58a 353 if (len < (int)UPAP_HEADERLEN) {
sunyiming 1:6465a3f5c58a 354 UPAPDEBUG(LOG_INFO, ("pap_input: rcvd illegal length.\n"));
sunyiming 1:6465a3f5c58a 355 return;
sunyiming 1:6465a3f5c58a 356 }
sunyiming 1:6465a3f5c58a 357 if (len > l) {
sunyiming 1:6465a3f5c58a 358 UPAPDEBUG(LOG_INFO, ("pap_input: rcvd short packet.\n"));
sunyiming 1:6465a3f5c58a 359 return;
sunyiming 1:6465a3f5c58a 360 }
sunyiming 1:6465a3f5c58a 361 len -= UPAP_HEADERLEN;
sunyiming 1:6465a3f5c58a 362
sunyiming 1:6465a3f5c58a 363 /*
sunyiming 1:6465a3f5c58a 364 * Action depends on code.
sunyiming 1:6465a3f5c58a 365 */
sunyiming 1:6465a3f5c58a 366 switch (code) {
sunyiming 1:6465a3f5c58a 367 case UPAP_AUTHREQ:
sunyiming 1:6465a3f5c58a 368 upap_rauthreq(u, inp, id, len);
sunyiming 1:6465a3f5c58a 369 break;
sunyiming 1:6465a3f5c58a 370
sunyiming 1:6465a3f5c58a 371 case UPAP_AUTHACK:
sunyiming 1:6465a3f5c58a 372 upap_rauthack(u, inp, id, len);
sunyiming 1:6465a3f5c58a 373 break;
sunyiming 1:6465a3f5c58a 374
sunyiming 1:6465a3f5c58a 375 case UPAP_AUTHNAK:
sunyiming 1:6465a3f5c58a 376 upap_rauthnak(u, inp, id, len);
sunyiming 1:6465a3f5c58a 377 break;
sunyiming 1:6465a3f5c58a 378
sunyiming 1:6465a3f5c58a 379 default: /* XXX Need code reject */
sunyiming 1:6465a3f5c58a 380 UPAPDEBUG(LOG_INFO, ("pap_input: UNHANDLED default: code: %d, id: %d, len: %d.\n", code, id, len));
sunyiming 1:6465a3f5c58a 381 break;
sunyiming 1:6465a3f5c58a 382 }
sunyiming 1:6465a3f5c58a 383 }
sunyiming 1:6465a3f5c58a 384
sunyiming 1:6465a3f5c58a 385
sunyiming 1:6465a3f5c58a 386 /*
sunyiming 1:6465a3f5c58a 387 * upap_rauth - Receive Authenticate.
sunyiming 1:6465a3f5c58a 388 */
sunyiming 1:6465a3f5c58a 389 static void
sunyiming 1:6465a3f5c58a 390 upap_rauthreq(upap_state *u, u_char *inp, u_char id, int len)
sunyiming 1:6465a3f5c58a 391 {
sunyiming 1:6465a3f5c58a 392 u_char ruserlen, rpasswdlen;
sunyiming 1:6465a3f5c58a 393 char *ruser, *rpasswd;
sunyiming 1:6465a3f5c58a 394 u_char retcode;
sunyiming 1:6465a3f5c58a 395 char *msg;
sunyiming 1:6465a3f5c58a 396 int msglen;
sunyiming 1:6465a3f5c58a 397
sunyiming 1:6465a3f5c58a 398 UPAPDEBUG(LOG_INFO, ("pap_rauth: Rcvd id %d.\n", id));
sunyiming 1:6465a3f5c58a 399
sunyiming 1:6465a3f5c58a 400 if (u->us_serverstate < UPAPSS_LISTEN) {
sunyiming 1:6465a3f5c58a 401 return;
sunyiming 1:6465a3f5c58a 402 }
sunyiming 1:6465a3f5c58a 403
sunyiming 1:6465a3f5c58a 404 /*
sunyiming 1:6465a3f5c58a 405 * If we receive a duplicate authenticate-request, we are
sunyiming 1:6465a3f5c58a 406 * supposed to return the same status as for the first request.
sunyiming 1:6465a3f5c58a 407 */
sunyiming 1:6465a3f5c58a 408 if (u->us_serverstate == UPAPSS_OPEN) {
sunyiming 1:6465a3f5c58a 409 upap_sresp(u, UPAP_AUTHACK, id, "", 0); /* return auth-ack */
sunyiming 1:6465a3f5c58a 410 return;
sunyiming 1:6465a3f5c58a 411 }
sunyiming 1:6465a3f5c58a 412 if (u->us_serverstate == UPAPSS_BADAUTH) {
sunyiming 1:6465a3f5c58a 413 upap_sresp(u, UPAP_AUTHNAK, id, "", 0); /* return auth-nak */
sunyiming 1:6465a3f5c58a 414 return;
sunyiming 1:6465a3f5c58a 415 }
sunyiming 1:6465a3f5c58a 416
sunyiming 1:6465a3f5c58a 417 /*
sunyiming 1:6465a3f5c58a 418 * Parse user/passwd.
sunyiming 1:6465a3f5c58a 419 */
sunyiming 1:6465a3f5c58a 420 if (len < (int)sizeof (u_char)) {
sunyiming 1:6465a3f5c58a 421 UPAPDEBUG(LOG_INFO, ("pap_rauth: rcvd short packet.\n"));
sunyiming 1:6465a3f5c58a 422 return;
sunyiming 1:6465a3f5c58a 423 }
sunyiming 1:6465a3f5c58a 424 GETCHAR(ruserlen, inp);
sunyiming 1:6465a3f5c58a 425 len -= sizeof (u_char) + ruserlen + sizeof (u_char);
sunyiming 1:6465a3f5c58a 426 if (len < 0) {
sunyiming 1:6465a3f5c58a 427 UPAPDEBUG(LOG_INFO, ("pap_rauth: rcvd short packet.\n"));
sunyiming 1:6465a3f5c58a 428 return;
sunyiming 1:6465a3f5c58a 429 }
sunyiming 1:6465a3f5c58a 430 ruser = (char *) inp;
sunyiming 1:6465a3f5c58a 431 INCPTR(ruserlen, inp);
sunyiming 1:6465a3f5c58a 432 GETCHAR(rpasswdlen, inp);
sunyiming 1:6465a3f5c58a 433 if (len < rpasswdlen) {
sunyiming 1:6465a3f5c58a 434 UPAPDEBUG(LOG_INFO, ("pap_rauth: rcvd short packet.\n"));
sunyiming 1:6465a3f5c58a 435 return;
sunyiming 1:6465a3f5c58a 436 }
sunyiming 1:6465a3f5c58a 437 rpasswd = (char *) inp;
sunyiming 1:6465a3f5c58a 438
sunyiming 1:6465a3f5c58a 439 /*
sunyiming 1:6465a3f5c58a 440 * Check the username and password given.
sunyiming 1:6465a3f5c58a 441 */
sunyiming 1:6465a3f5c58a 442 retcode = check_passwd(u->us_unit, ruser, ruserlen, rpasswd, rpasswdlen, &msg, &msglen);
sunyiming 1:6465a3f5c58a 443 /* lwip: currently retcode is always UPAP_AUTHACK */
sunyiming 1:6465a3f5c58a 444 BZERO(rpasswd, rpasswdlen);
sunyiming 1:6465a3f5c58a 445
sunyiming 1:6465a3f5c58a 446 upap_sresp(u, retcode, id, msg, msglen);
sunyiming 1:6465a3f5c58a 447
sunyiming 1:6465a3f5c58a 448 if (retcode == UPAP_AUTHACK) {
sunyiming 1:6465a3f5c58a 449 u->us_serverstate = UPAPSS_OPEN;
sunyiming 1:6465a3f5c58a 450 auth_peer_success(u->us_unit, PPP_PAP, ruser, ruserlen);
sunyiming 1:6465a3f5c58a 451 } else {
sunyiming 1:6465a3f5c58a 452 u->us_serverstate = UPAPSS_BADAUTH;
sunyiming 1:6465a3f5c58a 453 auth_peer_fail(u->us_unit, PPP_PAP);
sunyiming 1:6465a3f5c58a 454 }
sunyiming 1:6465a3f5c58a 455
sunyiming 1:6465a3f5c58a 456 if (u->us_reqtimeout > 0) {
sunyiming 1:6465a3f5c58a 457 UNTIMEOUT(upap_reqtimeout, u);
sunyiming 1:6465a3f5c58a 458 }
sunyiming 1:6465a3f5c58a 459 }
sunyiming 1:6465a3f5c58a 460
sunyiming 1:6465a3f5c58a 461
sunyiming 1:6465a3f5c58a 462 /*
sunyiming 1:6465a3f5c58a 463 * upap_rauthack - Receive Authenticate-Ack.
sunyiming 1:6465a3f5c58a 464 */
sunyiming 1:6465a3f5c58a 465 static void
sunyiming 1:6465a3f5c58a 466 upap_rauthack(upap_state *u, u_char *inp, int id, int len)
sunyiming 1:6465a3f5c58a 467 {
sunyiming 1:6465a3f5c58a 468 u_char msglen;
sunyiming 1:6465a3f5c58a 469 char *msg;
sunyiming 1:6465a3f5c58a 470
sunyiming 1:6465a3f5c58a 471 LWIP_UNUSED_ARG(id);
sunyiming 1:6465a3f5c58a 472
sunyiming 1:6465a3f5c58a 473 UPAPDEBUG(LOG_INFO, ("pap_rauthack: Rcvd id %d s=%d\n", id, u->us_clientstate));
sunyiming 1:6465a3f5c58a 474
sunyiming 1:6465a3f5c58a 475 if (u->us_clientstate != UPAPCS_AUTHREQ) { /* XXX */
sunyiming 1:6465a3f5c58a 476 UPAPDEBUG(LOG_INFO, ("pap_rauthack: us_clientstate != UPAPCS_AUTHREQ\n"));
sunyiming 1:6465a3f5c58a 477 return;
sunyiming 1:6465a3f5c58a 478 }
sunyiming 1:6465a3f5c58a 479
sunyiming 1:6465a3f5c58a 480 /*
sunyiming 1:6465a3f5c58a 481 * Parse message.
sunyiming 1:6465a3f5c58a 482 */
sunyiming 1:6465a3f5c58a 483 if (len < (int)sizeof (u_char)) {
sunyiming 1:6465a3f5c58a 484 UPAPDEBUG(LOG_INFO, ("pap_rauthack: ignoring missing msg-length.\n"));
sunyiming 1:6465a3f5c58a 485 } else {
sunyiming 1:6465a3f5c58a 486 GETCHAR(msglen, inp);
sunyiming 1:6465a3f5c58a 487 if (msglen > 0) {
sunyiming 1:6465a3f5c58a 488 len -= sizeof (u_char);
sunyiming 1:6465a3f5c58a 489 if (len < msglen) {
sunyiming 1:6465a3f5c58a 490 UPAPDEBUG(LOG_INFO, ("pap_rauthack: rcvd short packet.\n"));
sunyiming 1:6465a3f5c58a 491 return;
sunyiming 1:6465a3f5c58a 492 }
sunyiming 1:6465a3f5c58a 493 msg = (char *) inp;
sunyiming 1:6465a3f5c58a 494 PRINTMSG(msg, msglen);
sunyiming 1:6465a3f5c58a 495 }
sunyiming 1:6465a3f5c58a 496 }
sunyiming 1:6465a3f5c58a 497 UNTIMEOUT(upap_timeout, u); /* Cancel timeout */
sunyiming 1:6465a3f5c58a 498 u->us_clientstate = UPAPCS_OPEN;
sunyiming 1:6465a3f5c58a 499
sunyiming 1:6465a3f5c58a 500 auth_withpeer_success(u->us_unit, PPP_PAP);
sunyiming 1:6465a3f5c58a 501 }
sunyiming 1:6465a3f5c58a 502
sunyiming 1:6465a3f5c58a 503
sunyiming 1:6465a3f5c58a 504 /*
sunyiming 1:6465a3f5c58a 505 * upap_rauthnak - Receive Authenticate-Nak.
sunyiming 1:6465a3f5c58a 506 */
sunyiming 1:6465a3f5c58a 507 static void
sunyiming 1:6465a3f5c58a 508 upap_rauthnak(upap_state *u, u_char *inp, int id, int len)
sunyiming 1:6465a3f5c58a 509 {
sunyiming 1:6465a3f5c58a 510 u_char msglen;
sunyiming 1:6465a3f5c58a 511 char *msg;
sunyiming 1:6465a3f5c58a 512
sunyiming 1:6465a3f5c58a 513 LWIP_UNUSED_ARG(id);
sunyiming 1:6465a3f5c58a 514
sunyiming 1:6465a3f5c58a 515 UPAPDEBUG(LOG_INFO, ("pap_rauthnak: Rcvd id %d s=%d\n", id, u->us_clientstate));
sunyiming 1:6465a3f5c58a 516
sunyiming 1:6465a3f5c58a 517 if (u->us_clientstate != UPAPCS_AUTHREQ) { /* XXX */
sunyiming 1:6465a3f5c58a 518 return;
sunyiming 1:6465a3f5c58a 519 }
sunyiming 1:6465a3f5c58a 520
sunyiming 1:6465a3f5c58a 521 /*
sunyiming 1:6465a3f5c58a 522 * Parse message.
sunyiming 1:6465a3f5c58a 523 */
sunyiming 1:6465a3f5c58a 524 if (len < sizeof (u_char)) {
sunyiming 1:6465a3f5c58a 525 UPAPDEBUG(LOG_INFO, ("pap_rauthnak: ignoring missing msg-length.\n"));
sunyiming 1:6465a3f5c58a 526 } else {
sunyiming 1:6465a3f5c58a 527 GETCHAR(msglen, inp);
sunyiming 1:6465a3f5c58a 528 if(msglen > 0) {
sunyiming 1:6465a3f5c58a 529 len -= sizeof (u_char);
sunyiming 1:6465a3f5c58a 530 if (len < msglen) {
sunyiming 1:6465a3f5c58a 531 UPAPDEBUG(LOG_INFO, ("pap_rauthnak: rcvd short packet.\n"));
sunyiming 1:6465a3f5c58a 532 return;
sunyiming 1:6465a3f5c58a 533 }
sunyiming 1:6465a3f5c58a 534 msg = (char *) inp;
sunyiming 1:6465a3f5c58a 535 PRINTMSG(msg, msglen);
sunyiming 1:6465a3f5c58a 536 }
sunyiming 1:6465a3f5c58a 537 }
sunyiming 1:6465a3f5c58a 538
sunyiming 1:6465a3f5c58a 539 u->us_clientstate = UPAPCS_BADAUTH;
sunyiming 1:6465a3f5c58a 540
sunyiming 1:6465a3f5c58a 541 UPAPDEBUG(LOG_ERR, ("PAP authentication failed\n"));
sunyiming 1:6465a3f5c58a 542 auth_withpeer_fail(u->us_unit, PPP_PAP);
sunyiming 1:6465a3f5c58a 543 }
sunyiming 1:6465a3f5c58a 544
sunyiming 1:6465a3f5c58a 545
sunyiming 1:6465a3f5c58a 546 /*
sunyiming 1:6465a3f5c58a 547 * upap_sauthreq - Send an Authenticate-Request.
sunyiming 1:6465a3f5c58a 548 */
sunyiming 1:6465a3f5c58a 549 static void
sunyiming 1:6465a3f5c58a 550 upap_sauthreq(upap_state *u)
sunyiming 1:6465a3f5c58a 551 {
sunyiming 1:6465a3f5c58a 552 u_char *outp;
sunyiming 1:6465a3f5c58a 553 int outlen;
sunyiming 1:6465a3f5c58a 554
sunyiming 1:6465a3f5c58a 555 outlen = UPAP_HEADERLEN + 2 * sizeof (u_char)
sunyiming 1:6465a3f5c58a 556 + u->us_userlen + u->us_passwdlen;
sunyiming 1:6465a3f5c58a 557 outp = outpacket_buf[u->us_unit];
sunyiming 1:6465a3f5c58a 558
sunyiming 1:6465a3f5c58a 559 MAKEHEADER(outp, PPP_PAP);
sunyiming 1:6465a3f5c58a 560
sunyiming 1:6465a3f5c58a 561 PUTCHAR(UPAP_AUTHREQ, outp);
sunyiming 1:6465a3f5c58a 562 PUTCHAR(++u->us_id, outp);
sunyiming 1:6465a3f5c58a 563 PUTSHORT(outlen, outp);
sunyiming 1:6465a3f5c58a 564 PUTCHAR(u->us_userlen, outp);
sunyiming 1:6465a3f5c58a 565 BCOPY(u->us_user, outp, u->us_userlen);
sunyiming 1:6465a3f5c58a 566 INCPTR(u->us_userlen, outp);
sunyiming 1:6465a3f5c58a 567 PUTCHAR(u->us_passwdlen, outp);
sunyiming 1:6465a3f5c58a 568 BCOPY(u->us_passwd, outp, u->us_passwdlen);
sunyiming 1:6465a3f5c58a 569
sunyiming 1:6465a3f5c58a 570 pppWrite(u->us_unit, outpacket_buf[u->us_unit], outlen + PPP_HDRLEN);
sunyiming 1:6465a3f5c58a 571
sunyiming 1:6465a3f5c58a 572 UPAPDEBUG(LOG_INFO, ("pap_sauth: Sent id %d\n", u->us_id));
sunyiming 1:6465a3f5c58a 573
sunyiming 1:6465a3f5c58a 574 TIMEOUT(upap_timeout, u, u->us_timeouttime);
sunyiming 1:6465a3f5c58a 575 ++u->us_transmits;
sunyiming 1:6465a3f5c58a 576 u->us_clientstate = UPAPCS_AUTHREQ;
sunyiming 1:6465a3f5c58a 577 }
sunyiming 1:6465a3f5c58a 578
sunyiming 1:6465a3f5c58a 579
sunyiming 1:6465a3f5c58a 580 /*
sunyiming 1:6465a3f5c58a 581 * upap_sresp - Send a response (ack or nak).
sunyiming 1:6465a3f5c58a 582 */
sunyiming 1:6465a3f5c58a 583 static void
sunyiming 1:6465a3f5c58a 584 upap_sresp(upap_state *u, u_char code, u_char id, char *msg, int msglen)
sunyiming 1:6465a3f5c58a 585 {
sunyiming 1:6465a3f5c58a 586 u_char *outp;
sunyiming 1:6465a3f5c58a 587 int outlen;
sunyiming 1:6465a3f5c58a 588
sunyiming 1:6465a3f5c58a 589 outlen = UPAP_HEADERLEN + sizeof (u_char) + msglen;
sunyiming 1:6465a3f5c58a 590 outp = outpacket_buf[u->us_unit];
sunyiming 1:6465a3f5c58a 591 MAKEHEADER(outp, PPP_PAP);
sunyiming 1:6465a3f5c58a 592
sunyiming 1:6465a3f5c58a 593 PUTCHAR(code, outp);
sunyiming 1:6465a3f5c58a 594 PUTCHAR(id, outp);
sunyiming 1:6465a3f5c58a 595 PUTSHORT(outlen, outp);
sunyiming 1:6465a3f5c58a 596 PUTCHAR(msglen, outp);
sunyiming 1:6465a3f5c58a 597 BCOPY(msg, outp, msglen);
sunyiming 1:6465a3f5c58a 598 pppWrite(u->us_unit, outpacket_buf[u->us_unit], outlen + PPP_HDRLEN);
sunyiming 1:6465a3f5c58a 599
sunyiming 1:6465a3f5c58a 600 UPAPDEBUG(LOG_INFO, ("pap_sresp: Sent code %d, id %d s=%d\n", code, id, u->us_clientstate));
sunyiming 1:6465a3f5c58a 601 }
sunyiming 1:6465a3f5c58a 602
sunyiming 1:6465a3f5c58a 603 #if PPP_ADDITIONAL_CALLBACKS
sunyiming 1:6465a3f5c58a 604 static char *upap_codenames[] = {
sunyiming 1:6465a3f5c58a 605 "AuthReq", "AuthAck", "AuthNak"
sunyiming 1:6465a3f5c58a 606 };
sunyiming 1:6465a3f5c58a 607
sunyiming 1:6465a3f5c58a 608 /*
sunyiming 1:6465a3f5c58a 609 * upap_printpkt - print the contents of a PAP packet.
sunyiming 1:6465a3f5c58a 610 */
sunyiming 1:6465a3f5c58a 611 static int upap_printpkt(
sunyiming 1:6465a3f5c58a 612 u_char *p,
sunyiming 1:6465a3f5c58a 613 int plen,
sunyiming 1:6465a3f5c58a 614 void (*printer) (void *, char *, ...),
sunyiming 1:6465a3f5c58a 615 void *arg
sunyiming 1:6465a3f5c58a 616 )
sunyiming 1:6465a3f5c58a 617 {
sunyiming 1:6465a3f5c58a 618 LWIP_UNUSED_ARG(p);
sunyiming 1:6465a3f5c58a 619 LWIP_UNUSED_ARG(plen);
sunyiming 1:6465a3f5c58a 620 LWIP_UNUSED_ARG(printer);
sunyiming 1:6465a3f5c58a 621 LWIP_UNUSED_ARG(arg);
sunyiming 1:6465a3f5c58a 622 return 0;
sunyiming 1:6465a3f5c58a 623 }
sunyiming 1:6465a3f5c58a 624 #endif /* PPP_ADDITIONAL_CALLBACKS */
sunyiming 1:6465a3f5c58a 625
sunyiming 1:6465a3f5c58a 626 #endif /* PAP_SUPPORT */
sunyiming 1:6465a3f5c58a 627
sunyiming 1:6465a3f5c58a 628 #endif /* PPP_SUPPORT */