Ivan Shindev / lwip

V1

Dependents:   EthernetInterface

Fork of lwip by mbed official

netif/ppp/pap.c@11:c9233fe7de67, 2013-06-13 (annotated)

Committer:
lemniskata
Date:
Thu Jun 13 20:00:31 2013 +0000
Revision:
11:c9233fe7de67
Parent:
10:42a34d63b218 
V1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:51ac1d130fd4 1 /*****************************************************************************
mbed_official 0:51ac1d130fd4 2 * pap.c - Network Password Authentication Protocol program file.
mbed_official 0:51ac1d130fd4 3 *
mbed_official 0:51ac1d130fd4 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
mbed_official 0:51ac1d130fd4 5 * portions Copyright (c) 1997 by Global Election Systems Inc.
mbed_official 0:51ac1d130fd4 6 *
mbed_official 0:51ac1d130fd4 7 * The authors hereby grant permission to use, copy, modify, distribute,
mbed_official 0:51ac1d130fd4 8 * and license this software and its documentation for any purpose, provided
mbed_official 0:51ac1d130fd4 9 * that existing copyright notices are retained in all copies and that this
mbed_official 0:51ac1d130fd4 10 * notice and the following disclaimer are included verbatim in any
mbed_official 0:51ac1d130fd4 11 * distributions. No written agreement, license, or royalty fee is required
mbed_official 0:51ac1d130fd4 12 * for any of the authorized uses.
mbed_official 0:51ac1d130fd4 13 *
mbed_official 0:51ac1d130fd4 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
mbed_official 0:51ac1d130fd4 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
mbed_official 0:51ac1d130fd4 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
mbed_official 0:51ac1d130fd4 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
mbed_official 0:51ac1d130fd4 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
mbed_official 0:51ac1d130fd4 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
mbed_official 0:51ac1d130fd4 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
mbed_official 0:51ac1d130fd4 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
mbed_official 0:51ac1d130fd4 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
mbed_official 0:51ac1d130fd4 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 0:51ac1d130fd4 24 *
mbed_official 0:51ac1d130fd4 25 ******************************************************************************
mbed_official 0:51ac1d130fd4 26 * REVISION HISTORY
mbed_official 0:51ac1d130fd4 27 *
mbed_official 0:51ac1d130fd4 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
mbed_official 0:51ac1d130fd4 29 * Ported to lwIP.
mbed_official 0:51ac1d130fd4 30 * 97-12-12 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
mbed_official 0:51ac1d130fd4 31 * Original.
mbed_official 0:51ac1d130fd4 32 *****************************************************************************/
mbed_official 0:51ac1d130fd4 33 /*
mbed_official 0:51ac1d130fd4 34 * upap.c - User/Password Authentication Protocol.
mbed_official 0:51ac1d130fd4 35 *
mbed_official 0:51ac1d130fd4 36 * Copyright (c) 1989 Carnegie Mellon University.
mbed_official 0:51ac1d130fd4 37 * All rights reserved.
mbed_official 0:51ac1d130fd4 38 *
mbed_official 0:51ac1d130fd4 39 * Redistribution and use in source and binary forms are permitted
mbed_official 0:51ac1d130fd4 40 * provided that the above copyright notice and this paragraph are
mbed_official 0:51ac1d130fd4 41 * duplicated in all such forms and that any documentation,
mbed_official 0:51ac1d130fd4 42 * advertising materials, and other materials related to such
mbed_official 0:51ac1d130fd4 43 * distribution and use acknowledge that the software was developed
mbed_official 0:51ac1d130fd4 44 * by Carnegie Mellon University. The name of the
mbed_official 0:51ac1d130fd4 45 * University may not be used to endorse or promote products derived
mbed_official 0:51ac1d130fd4 46 * from this software without specific prior written permission.
mbed_official 0:51ac1d130fd4 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
mbed_official 0:51ac1d130fd4 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
mbed_official 0:51ac1d130fd4 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
mbed_official 0:51ac1d130fd4 50 */
mbed_official 0:51ac1d130fd4 51
mbed_official 0:51ac1d130fd4 52 #include "lwip/opt.h"
mbed_official 0:51ac1d130fd4 53
mbed_official 0:51ac1d130fd4 54 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
mbed_official 0:51ac1d130fd4 55
mbed_official 0:51ac1d130fd4 56 #if PAP_SUPPORT /* don't build if not configured for use in lwipopts.h */
mbed_official 0:51ac1d130fd4 57
mbed_official 0:51ac1d130fd4 58 #include "ppp.h"
mbed_official 0:51ac1d130fd4 59 #include "pppdebug.h"
mbed_official 0:51ac1d130fd4 60
mbed_official 0:51ac1d130fd4 61 #include "auth.h"
mbed_official 0:51ac1d130fd4 62 #include "pap.h"
mbed_official 0:51ac1d130fd4 63
mbed_official 0:51ac1d130fd4 64 #include <string.h>
mbed_official 0:51ac1d130fd4 65
mbed_official 0:51ac1d130fd4 66 #if 0 /* UNUSED */
mbed_official 0:51ac1d130fd4 67 static bool hide_password = 1;
mbed_official 0:51ac1d130fd4 68
mbed_official 0:51ac1d130fd4 69 /*
mbed_official 0:51ac1d130fd4 70 * Command-line options.
mbed_official 0:51ac1d130fd4 71 */
mbed_official 0:51ac1d130fd4 72 static option_t pap_option_list[] = {
mbed_official 0:51ac1d130fd4 73 { "hide-password", o_bool, &hide_password,
mbed_official 0:51ac1d130fd4 74 "Don't output passwords to log", 1 },
mbed_official 0:51ac1d130fd4 75 { "show-password", o_bool, &hide_password,
mbed_official 0:51ac1d130fd4 76 "Show password string in debug log messages", 0 },
mbed_official 0:51ac1d130fd4 77 { "pap-restart", o_int, &upap[0].us_timeouttime,
mbed_official 0:51ac1d130fd4 78 "Set retransmit timeout for PAP" },
mbed_official 0:51ac1d130fd4 79 { "pap-max-authreq", o_int, &upap[0].us_maxtransmits,
mbed_official 0:51ac1d130fd4 80 "Set max number of transmissions for auth-reqs" },
mbed_official 0:51ac1d130fd4 81 { "pap-timeout", o_int, &upap[0].us_reqtimeout,
mbed_official 0:51ac1d130fd4 82 "Set time limit for peer PAP authentication" },
mbed_official 0:51ac1d130fd4 83 { NULL }
mbed_official 0:51ac1d130fd4 84 };
mbed_official 0:51ac1d130fd4 85 #endif
mbed_official 0:51ac1d130fd4 86
mbed_official 0:51ac1d130fd4 87 /*
mbed_official 0:51ac1d130fd4 88 * Protocol entry points.
mbed_official 0:51ac1d130fd4 89 */
mbed_official 0:51ac1d130fd4 90 static void upap_init (int);
mbed_official 0:51ac1d130fd4 91 static void upap_lowerup (int);
mbed_official 0:51ac1d130fd4 92 static void upap_lowerdown (int);
mbed_official 0:51ac1d130fd4 93 static void upap_input (int, u_char *, int);
mbed_official 0:51ac1d130fd4 94 static void upap_protrej (int);
mbed_official 0:51ac1d130fd4 95 #if PPP_ADDITIONAL_CALLBACKS
mbed_official 0:51ac1d130fd4 96 static int upap_printpkt (u_char *, int, void (*)(void *, char *, ...), void *);
mbed_official 0:51ac1d130fd4 97 #endif /* PPP_ADDITIONAL_CALLBACKS */
mbed_official 0:51ac1d130fd4 98
mbed_official 0:51ac1d130fd4 99 struct protent pap_protent = {
mbed_official 0:51ac1d130fd4 100 PPP_PAP,
mbed_official 0:51ac1d130fd4 101 upap_init,
mbed_official 0:51ac1d130fd4 102 upap_input,
mbed_official 0:51ac1d130fd4 103 upap_protrej,
mbed_official 0:51ac1d130fd4 104 upap_lowerup,
mbed_official 0:51ac1d130fd4 105 upap_lowerdown,
mbed_official 0:51ac1d130fd4 106 NULL,
mbed_official 0:51ac1d130fd4 107 NULL,
mbed_official 0:51ac1d130fd4 108 #if PPP_ADDITIONAL_CALLBACKS
mbed_official 0:51ac1d130fd4 109 upap_printpkt,
mbed_official 0:51ac1d130fd4 110 NULL,
mbed_official 0:51ac1d130fd4 111 #endif /* PPP_ADDITIONAL_CALLBACKS */
mbed_official 0:51ac1d130fd4 112 1,
mbed_official 0:51ac1d130fd4 113 "PAP",
mbed_official 0:51ac1d130fd4 114 #if PPP_ADDITIONAL_CALLBACKS
mbed_official 0:51ac1d130fd4 115 NULL,
mbed_official 0:51ac1d130fd4 116 NULL,
mbed_official 0:51ac1d130fd4 117 NULL
mbed_official 0:51ac1d130fd4 118 #endif /* PPP_ADDITIONAL_CALLBACKS */
mbed_official 0:51ac1d130fd4 119 };
mbed_official 0:51ac1d130fd4 120
mbed_official 0:51ac1d130fd4 121 upap_state upap[NUM_PPP]; /* UPAP state; one for each unit */
mbed_official 0:51ac1d130fd4 122
mbed_official 0:51ac1d130fd4 123 static void upap_timeout (void *);
mbed_official 0:51ac1d130fd4 124 static void upap_reqtimeout(void *);
mbed_official 0:51ac1d130fd4 125 static void upap_rauthreq (upap_state *, u_char *, u_char, int);
mbed_official 0:51ac1d130fd4 126 static void upap_rauthack (upap_state *, u_char *, int, int);
mbed_official 0:51ac1d130fd4 127 static void upap_rauthnak (upap_state *, u_char *, int, int);
mbed_official 0:51ac1d130fd4 128 static void upap_sauthreq (upap_state *);
mbed_official 0:51ac1d130fd4 129 static void upap_sresp (upap_state *, u_char, u_char, char *, int);
mbed_official 0:51ac1d130fd4 130
mbed_official 0:51ac1d130fd4 131
mbed_official 0:51ac1d130fd4 132 /*
mbed_official 0:51ac1d130fd4 133 * upap_init - Initialize a UPAP unit.
mbed_official 0:51ac1d130fd4 134 */
mbed_official 0:51ac1d130fd4 135 static void
mbed_official 0:51ac1d130fd4 136 upap_init(int unit)
mbed_official 0:51ac1d130fd4 137 {
mbed_official 0:51ac1d130fd4 138 upap_state *u = &upap[unit];
mbed_official 0:51ac1d130fd4 139
mbed_official 0:51ac1d130fd4 140 UPAPDEBUG(LOG_INFO, ("upap_init: %d\n", unit));
mbed_official 0:51ac1d130fd4 141 u->us_unit = unit;
mbed_official 0:51ac1d130fd4 142 u->us_user = NULL;
mbed_official 0:51ac1d130fd4 143 u->us_userlen = 0;
mbed_official 0:51ac1d130fd4 144 u->us_passwd = NULL;
mbed_official 0:51ac1d130fd4 145 u->us_passwdlen = 0;
mbed_official 0:51ac1d130fd4 146 u->us_clientstate = UPAPCS_INITIAL;
mbed_official 0:51ac1d130fd4 147 u->us_serverstate = UPAPSS_INITIAL;
mbed_official 0:51ac1d130fd4 148 u->us_id = 0;
mbed_official 0:51ac1d130fd4 149 u->us_timeouttime = UPAP_DEFTIMEOUT;
mbed_official 0:51ac1d130fd4 150 u->us_maxtransmits = 10;
mbed_official 0:51ac1d130fd4 151 u->us_reqtimeout = UPAP_DEFREQTIME;
mbed_official 0:51ac1d130fd4 152 }
mbed_official 0:51ac1d130fd4 153
mbed_official 0:51ac1d130fd4 154 /*
mbed_official 0:51ac1d130fd4 155 * upap_authwithpeer - Authenticate us with our peer (start client).
mbed_official 0:51ac1d130fd4 156 *
mbed_official 0:51ac1d130fd4 157 * Set new state and send authenticate's.
mbed_official 0:51ac1d130fd4 158 */
mbed_official 0:51ac1d130fd4 159 void
mbed_official 0:51ac1d130fd4 160 upap_authwithpeer(int unit, char *user, char *password)
mbed_official 0:51ac1d130fd4 161 {
mbed_official 0:51ac1d130fd4 162 upap_state *u = &upap[unit];
mbed_official 0:51ac1d130fd4 163
mbed_official 0:51ac1d130fd4 164 UPAPDEBUG(LOG_INFO, ("upap_authwithpeer: %d user=%s password=%s s=%d\n",
mbed_official 0:51ac1d130fd4 165 unit, user, password, u->us_clientstate));
mbed_official 0:51ac1d130fd4 166
mbed_official 0:51ac1d130fd4 167 /* Save the username and password we're given */
mbed_official 0:51ac1d130fd4 168 u->us_user = user;
mbed_official 0:51ac1d130fd4 169 u->us_userlen = (int)strlen(user);
mbed_official 0:51ac1d130fd4 170 u->us_passwd = password;
mbed_official 0:51ac1d130fd4 171 u->us_passwdlen = (int)strlen(password);
mbed_official 0:51ac1d130fd4 172
mbed_official 0:51ac1d130fd4 173 u->us_transmits = 0;
mbed_official 0:51ac1d130fd4 174
mbed_official 0:51ac1d130fd4 175 /* Lower layer up yet? */
mbed_official 0:51ac1d130fd4 176 if (u->us_clientstate == UPAPCS_INITIAL ||
mbed_official 0:51ac1d130fd4 177 u->us_clientstate == UPAPCS_PENDING) {
mbed_official 0:51ac1d130fd4 178 u->us_clientstate = UPAPCS_PENDING;
mbed_official 0:51ac1d130fd4 179 return;
mbed_official 0:51ac1d130fd4 180 }
mbed_official 0:51ac1d130fd4 181
mbed_official 0:51ac1d130fd4 182 upap_sauthreq(u); /* Start protocol */
mbed_official 0:51ac1d130fd4 183 }
mbed_official 0:51ac1d130fd4 184
mbed_official 0:51ac1d130fd4 185
mbed_official 0:51ac1d130fd4 186 /*
mbed_official 0:51ac1d130fd4 187 * upap_authpeer - Authenticate our peer (start server).
mbed_official 0:51ac1d130fd4 188 *
mbed_official 0:51ac1d130fd4 189 * Set new state.
mbed_official 0:51ac1d130fd4 190 */
mbed_official 0:51ac1d130fd4 191 void
mbed_official 0:51ac1d130fd4 192 upap_authpeer(int unit)
mbed_official 0:51ac1d130fd4 193 {
mbed_official 0:51ac1d130fd4 194 upap_state *u = &upap[unit];
mbed_official 0:51ac1d130fd4 195
mbed_official 0:51ac1d130fd4 196 /* Lower layer up yet? */
mbed_official 0:51ac1d130fd4 197 if (u->us_serverstate == UPAPSS_INITIAL ||
mbed_official 0:51ac1d130fd4 198 u->us_serverstate == UPAPSS_PENDING) {
mbed_official 0:51ac1d130fd4 199 u->us_serverstate = UPAPSS_PENDING;
mbed_official 0:51ac1d130fd4 200 return;
mbed_official 0:51ac1d130fd4 201 }
mbed_official 0:51ac1d130fd4 202
mbed_official 0:51ac1d130fd4 203 u->us_serverstate = UPAPSS_LISTEN;
mbed_official 0:51ac1d130fd4 204 if (u->us_reqtimeout > 0) {
mbed_official 0:51ac1d130fd4 205 TIMEOUT(upap_reqtimeout, u, u->us_reqtimeout);
mbed_official 0:51ac1d130fd4 206 }
mbed_official 0:51ac1d130fd4 207 }
mbed_official 0:51ac1d130fd4 208
mbed_official 0:51ac1d130fd4 209 /*
mbed_official 0:51ac1d130fd4 210 * upap_timeout - Retransmission timer for sending auth-reqs expired.
mbed_official 0:51ac1d130fd4 211 */
mbed_official 0:51ac1d130fd4 212 static void
mbed_official 0:51ac1d130fd4 213 upap_timeout(void *arg)
mbed_official 0:51ac1d130fd4 214 {
mbed_official 0:51ac1d130fd4 215 upap_state *u = (upap_state *) arg;
mbed_official 0:51ac1d130fd4 216
mbed_official 0:51ac1d130fd4 217 UPAPDEBUG(LOG_INFO, ("upap_timeout: %d timeout %d expired s=%d\n",
mbed_official 0:51ac1d130fd4 218 u->us_unit, u->us_timeouttime, u->us_clientstate));
mbed_official 0:51ac1d130fd4 219
mbed_official 0:51ac1d130fd4 220 if (u->us_clientstate != UPAPCS_AUTHREQ) {
lemniskata 11:c9233fe7de67 221 UPAPDEBUG(LOG_INFO, ("upap_timeout: not in AUTHREQ state!\n"));
mbed_official 0:51ac1d130fd4 222 return;
mbed_official 0:51ac1d130fd4 223 }
mbed_official 0:51ac1d130fd4 224
mbed_official 0:51ac1d130fd4 225 if (u->us_transmits >= u->us_maxtransmits) {
mbed_official 0:51ac1d130fd4 226 /* give up in disgust */
mbed_official 0:51ac1d130fd4 227 UPAPDEBUG(LOG_ERR, ("No response to PAP authenticate-requests\n"));
mbed_official 0:51ac1d130fd4 228 u->us_clientstate = UPAPCS_BADAUTH;
mbed_official 0:51ac1d130fd4 229 auth_withpeer_fail(u->us_unit, PPP_PAP);
mbed_official 0:51ac1d130fd4 230 return;
mbed_official 0:51ac1d130fd4 231 }
mbed_official 0:51ac1d130fd4 232
mbed_official 0:51ac1d130fd4 233 upap_sauthreq(u); /* Send Authenticate-Request and set upap timeout*/
mbed_official 0:51ac1d130fd4 234 }
mbed_official 0:51ac1d130fd4 235
mbed_official 0:51ac1d130fd4 236
mbed_official 0:51ac1d130fd4 237 /*
mbed_official 0:51ac1d130fd4 238 * upap_reqtimeout - Give up waiting for the peer to send an auth-req.
mbed_official 0:51ac1d130fd4 239 */
mbed_official 0:51ac1d130fd4 240 static void
mbed_official 0:51ac1d130fd4 241 upap_reqtimeout(void *arg)
mbed_official 0:51ac1d130fd4 242 {
mbed_official 0:51ac1d130fd4 243 upap_state *u = (upap_state *) arg;
mbed_official 0:51ac1d130fd4 244
mbed_official 0:51ac1d130fd4 245 if (u->us_serverstate != UPAPSS_LISTEN) {
mbed_official 0:51ac1d130fd4 246 return; /* huh?? */
mbed_official 0:51ac1d130fd4 247 }
mbed_official 0:51ac1d130fd4 248
mbed_official 0:51ac1d130fd4 249 auth_peer_fail(u->us_unit, PPP_PAP);
mbed_official 0:51ac1d130fd4 250 u->us_serverstate = UPAPSS_BADAUTH;
mbed_official 0:51ac1d130fd4 251 }
mbed_official 0:51ac1d130fd4 252
mbed_official 0:51ac1d130fd4 253
mbed_official 0:51ac1d130fd4 254 /*
mbed_official 0:51ac1d130fd4 255 * upap_lowerup - The lower layer is up.
mbed_official 0:51ac1d130fd4 256 *
mbed_official 0:51ac1d130fd4 257 * Start authenticating if pending.
mbed_official 0:51ac1d130fd4 258 */
mbed_official 0:51ac1d130fd4 259 static void
mbed_official 0:51ac1d130fd4 260 upap_lowerup(int unit)
mbed_official 0:51ac1d130fd4 261 {
mbed_official 0:51ac1d130fd4 262 upap_state *u = &upap[unit];
mbed_official 0:51ac1d130fd4 263
mbed_official 0:51ac1d130fd4 264 UPAPDEBUG(LOG_INFO, ("upap_lowerup: init %d clientstate s=%d\n", unit, u->us_clientstate));
mbed_official 0:51ac1d130fd4 265
mbed_official 0:51ac1d130fd4 266 if (u->us_clientstate == UPAPCS_INITIAL) {
mbed_official 0:51ac1d130fd4 267 u->us_clientstate = UPAPCS_CLOSED;
mbed_official 0:51ac1d130fd4 268 } else if (u->us_clientstate == UPAPCS_PENDING) {
mbed_official 0:51ac1d130fd4 269 upap_sauthreq(u); /* send an auth-request */
mbed_official 0:51ac1d130fd4 270 /* now client state is UPAPCS__AUTHREQ */
mbed_official 0:51ac1d130fd4 271 }
mbed_official 0:51ac1d130fd4 272
mbed_official 0:51ac1d130fd4 273 if (u->us_serverstate == UPAPSS_INITIAL) {
mbed_official 0:51ac1d130fd4 274 u->us_serverstate = UPAPSS_CLOSED;
mbed_official 0:51ac1d130fd4 275 } else if (u->us_serverstate == UPAPSS_PENDING) {
mbed_official 0:51ac1d130fd4 276 u->us_serverstate = UPAPSS_LISTEN;
mbed_official 0:51ac1d130fd4 277 if (u->us_reqtimeout > 0) {
mbed_official 0:51ac1d130fd4 278 TIMEOUT(upap_reqtimeout, u, u->us_reqtimeout);
mbed_official 0:51ac1d130fd4 279 }
mbed_official 0:51ac1d130fd4 280 }
mbed_official 0:51ac1d130fd4 281 }
mbed_official 0:51ac1d130fd4 282
mbed_official 0:51ac1d130fd4 283
mbed_official 0:51ac1d130fd4 284 /*
mbed_official 0:51ac1d130fd4 285 * upap_lowerdown - The lower layer is down.
mbed_official 0:51ac1d130fd4 286 *
mbed_official 0:51ac1d130fd4 287 * Cancel all timeouts.
mbed_official 0:51ac1d130fd4 288 */
mbed_official 0:51ac1d130fd4 289 static void
mbed_official 0:51ac1d130fd4 290 upap_lowerdown(int unit)
mbed_official 0:51ac1d130fd4 291 {
mbed_official 0:51ac1d130fd4 292 upap_state *u = &upap[unit];
mbed_official 0:51ac1d130fd4 293
mbed_official 0:51ac1d130fd4 294 UPAPDEBUG(LOG_INFO, ("upap_lowerdown: %d s=%d\n", unit, u->us_clientstate));
mbed_official 0:51ac1d130fd4 295
mbed_official 0:51ac1d130fd4 296 if (u->us_clientstate == UPAPCS_AUTHREQ) { /* Timeout pending? */
mbed_official 0:51ac1d130fd4 297 UNTIMEOUT(upap_timeout, u); /* Cancel timeout */
mbed_official 0:51ac1d130fd4 298 }
mbed_official 0:51ac1d130fd4 299 if (u->us_serverstate == UPAPSS_LISTEN && u->us_reqtimeout > 0) {
mbed_official 0:51ac1d130fd4 300 UNTIMEOUT(upap_reqtimeout, u);
mbed_official 0:51ac1d130fd4 301 }
mbed_official 0:51ac1d130fd4 302
mbed_official 0:51ac1d130fd4 303 u->us_clientstate = UPAPCS_INITIAL;
mbed_official 0:51ac1d130fd4 304 u->us_serverstate = UPAPSS_INITIAL;
mbed_official 0:51ac1d130fd4 305 }
mbed_official 0:51ac1d130fd4 306
mbed_official 0:51ac1d130fd4 307
mbed_official 0:51ac1d130fd4 308 /*
mbed_official 0:51ac1d130fd4 309 * upap_protrej - Peer doesn't speak this protocol.
mbed_official 0:51ac1d130fd4 310 *
mbed_official 0:51ac1d130fd4 311 * This shouldn't happen. In any case, pretend lower layer went down.
mbed_official 0:51ac1d130fd4 312 */
mbed_official 0:51ac1d130fd4 313 static void
mbed_official 0:51ac1d130fd4 314 upap_protrej(int unit)
mbed_official 0:51ac1d130fd4 315 {
mbed_official 0:51ac1d130fd4 316 upap_state *u = &upap[unit];
mbed_official 0:51ac1d130fd4 317
mbed_official 0:51ac1d130fd4 318 if (u->us_clientstate == UPAPCS_AUTHREQ) {
mbed_official 0:51ac1d130fd4 319 UPAPDEBUG(LOG_ERR, ("PAP authentication failed due to protocol-reject\n"));
mbed_official 0:51ac1d130fd4 320 auth_withpeer_fail(unit, PPP_PAP);
mbed_official 0:51ac1d130fd4 321 }
mbed_official 0:51ac1d130fd4 322 if (u->us_serverstate == UPAPSS_LISTEN) {
mbed_official 0:51ac1d130fd4 323 UPAPDEBUG(LOG_ERR, ("PAP authentication of peer failed (protocol-reject)\n"));
mbed_official 0:51ac1d130fd4 324 auth_peer_fail(unit, PPP_PAP);
mbed_official 0:51ac1d130fd4 325 }
mbed_official 0:51ac1d130fd4 326 upap_lowerdown(unit);
mbed_official 0:51ac1d130fd4 327 }
mbed_official 0:51ac1d130fd4 328
mbed_official 0:51ac1d130fd4 329
mbed_official 0:51ac1d130fd4 330 /*
mbed_official 0:51ac1d130fd4 331 * upap_input - Input UPAP packet.
mbed_official 0:51ac1d130fd4 332 */
mbed_official 0:51ac1d130fd4 333 static void
mbed_official 0:51ac1d130fd4 334 upap_input(int unit, u_char *inpacket, int l)
mbed_official 0:51ac1d130fd4 335 {
mbed_official 0:51ac1d130fd4 336 upap_state *u = &upap[unit];
mbed_official 0:51ac1d130fd4 337 u_char *inp;
mbed_official 0:51ac1d130fd4 338 u_char code, id;
mbed_official 0:51ac1d130fd4 339 int len;
mbed_official 0:51ac1d130fd4 340
mbed_official 0:51ac1d130fd4 341 /*
mbed_official 0:51ac1d130fd4 342 * Parse header (code, id and length).
mbed_official 0:51ac1d130fd4 343 * If packet too short, drop it.
mbed_official 0:51ac1d130fd4 344 */
mbed_official 0:51ac1d130fd4 345 inp = inpacket;
mbed_official 0:51ac1d130fd4 346 if (l < (int)UPAP_HEADERLEN) {
mbed_official 0:51ac1d130fd4 347 UPAPDEBUG(LOG_INFO, ("pap_input: rcvd short header.\n"));
mbed_official 0:51ac1d130fd4 348 return;
mbed_official 0:51ac1d130fd4 349 }
mbed_official 0:51ac1d130fd4 350 GETCHAR(code, inp);
mbed_official 0:51ac1d130fd4 351 GETCHAR(id, inp);
mbed_official 0:51ac1d130fd4 352 GETSHORT(len, inp);
mbed_official 0:51ac1d130fd4 353 if (len < (int)UPAP_HEADERLEN) {
mbed_official 0:51ac1d130fd4 354 UPAPDEBUG(LOG_INFO, ("pap_input: rcvd illegal length.\n"));
mbed_official 0:51ac1d130fd4 355 return;
mbed_official 0:51ac1d130fd4 356 }
mbed_official 0:51ac1d130fd4 357 if (len > l) {
mbed_official 0:51ac1d130fd4 358 UPAPDEBUG(LOG_INFO, ("pap_input: rcvd short packet.\n"));
mbed_official 0:51ac1d130fd4 359 return;
mbed_official 0:51ac1d130fd4 360 }
mbed_official 0:51ac1d130fd4 361 len -= UPAP_HEADERLEN;
mbed_official 0:51ac1d130fd4 362
mbed_official 0:51ac1d130fd4 363 /*
mbed_official 0:51ac1d130fd4 364 * Action depends on code.
mbed_official 0:51ac1d130fd4 365 */
mbed_official 0:51ac1d130fd4 366 switch (code) {
mbed_official 0:51ac1d130fd4 367 case UPAP_AUTHREQ:
mbed_official 0:51ac1d130fd4 368 upap_rauthreq(u, inp, id, len);
mbed_official 0:51ac1d130fd4 369 break;
mbed_official 0:51ac1d130fd4 370
mbed_official 0:51ac1d130fd4 371 case UPAP_AUTHACK:
mbed_official 0:51ac1d130fd4 372 upap_rauthack(u, inp, id, len);
mbed_official 0:51ac1d130fd4 373 break;
mbed_official 0:51ac1d130fd4 374
mbed_official 0:51ac1d130fd4 375 case UPAP_AUTHNAK:
mbed_official 0:51ac1d130fd4 376 upap_rauthnak(u, inp, id, len);
mbed_official 0:51ac1d130fd4 377 break;
mbed_official 0:51ac1d130fd4 378
mbed_official 0:51ac1d130fd4 379 default: /* XXX Need code reject */
mbed_official 0:51ac1d130fd4 380 UPAPDEBUG(LOG_INFO, ("pap_input: UNHANDLED default: code: %d, id: %d, len: %d.\n", code, id, len));
mbed_official 0:51ac1d130fd4 381 break;
mbed_official 0:51ac1d130fd4 382 }
mbed_official 0:51ac1d130fd4 383 }
mbed_official 0:51ac1d130fd4 384
mbed_official 0:51ac1d130fd4 385
mbed_official 0:51ac1d130fd4 386 /*
mbed_official 0:51ac1d130fd4 387 * upap_rauth - Receive Authenticate.
mbed_official 0:51ac1d130fd4 388 */
mbed_official 0:51ac1d130fd4 389 static void
mbed_official 0:51ac1d130fd4 390 upap_rauthreq(upap_state *u, u_char *inp, u_char id, int len)
mbed_official 0:51ac1d130fd4 391 {
mbed_official 0:51ac1d130fd4 392 u_char ruserlen, rpasswdlen;
mbed_official 0:51ac1d130fd4 393 char *ruser, *rpasswd;
mbed_official 0:51ac1d130fd4 394 u_char retcode;
mbed_official 0:51ac1d130fd4 395 char *msg;
mbed_official 0:51ac1d130fd4 396 int msglen;
mbed_official 0:51ac1d130fd4 397
mbed_official 0:51ac1d130fd4 398 UPAPDEBUG(LOG_INFO, ("pap_rauth: Rcvd id %d.\n", id));
mbed_official 0:51ac1d130fd4 399
mbed_official 0:51ac1d130fd4 400 if (u->us_serverstate < UPAPSS_LISTEN) {
mbed_official 0:51ac1d130fd4 401 return;
mbed_official 0:51ac1d130fd4 402 }
mbed_official 0:51ac1d130fd4 403
mbed_official 0:51ac1d130fd4 404 /*
mbed_official 0:51ac1d130fd4 405 * If we receive a duplicate authenticate-request, we are
mbed_official 0:51ac1d130fd4 406 * supposed to return the same status as for the first request.
mbed_official 0:51ac1d130fd4 407 */
mbed_official 0:51ac1d130fd4 408 if (u->us_serverstate == UPAPSS_OPEN) {
mbed_official 0:51ac1d130fd4 409 upap_sresp(u, UPAP_AUTHACK, id, "", 0); /* return auth-ack */
mbed_official 0:51ac1d130fd4 410 return;
mbed_official 0:51ac1d130fd4 411 }
mbed_official 0:51ac1d130fd4 412 if (u->us_serverstate == UPAPSS_BADAUTH) {
mbed_official 0:51ac1d130fd4 413 upap_sresp(u, UPAP_AUTHNAK, id, "", 0); /* return auth-nak */
mbed_official 0:51ac1d130fd4 414 return;
mbed_official 0:51ac1d130fd4 415 }
mbed_official 0:51ac1d130fd4 416
mbed_official 0:51ac1d130fd4 417 /*
mbed_official 0:51ac1d130fd4 418 * Parse user/passwd.
mbed_official 0:51ac1d130fd4 419 */
mbed_official 0:51ac1d130fd4 420 if (len < (int)sizeof (u_char)) {
mbed_official 0:51ac1d130fd4 421 UPAPDEBUG(LOG_INFO, ("pap_rauth: rcvd short packet.\n"));
mbed_official 0:51ac1d130fd4 422 return;
mbed_official 0:51ac1d130fd4 423 }
mbed_official 0:51ac1d130fd4 424 GETCHAR(ruserlen, inp);
mbed_official 0:51ac1d130fd4 425 len -= sizeof (u_char) + ruserlen + sizeof (u_char);
mbed_official 0:51ac1d130fd4 426 if (len < 0) {
mbed_official 0:51ac1d130fd4 427 UPAPDEBUG(LOG_INFO, ("pap_rauth: rcvd short packet.\n"));
mbed_official 0:51ac1d130fd4 428 return;
mbed_official 0:51ac1d130fd4 429 }
mbed_official 0:51ac1d130fd4 430 ruser = (char *) inp;
mbed_official 0:51ac1d130fd4 431 INCPTR(ruserlen, inp);
mbed_official 0:51ac1d130fd4 432 GETCHAR(rpasswdlen, inp);
mbed_official 0:51ac1d130fd4 433 if (len < rpasswdlen) {
mbed_official 0:51ac1d130fd4 434 UPAPDEBUG(LOG_INFO, ("pap_rauth: rcvd short packet.\n"));
mbed_official 0:51ac1d130fd4 435 return;
mbed_official 0:51ac1d130fd4 436 }
mbed_official 0:51ac1d130fd4 437 rpasswd = (char *) inp;
mbed_official 0:51ac1d130fd4 438
mbed_official 0:51ac1d130fd4 439 /*
mbed_official 0:51ac1d130fd4 440 * Check the username and password given.
mbed_official 0:51ac1d130fd4 441 */
mbed_official 0:51ac1d130fd4 442 retcode = check_passwd(u->us_unit, ruser, ruserlen, rpasswd, rpasswdlen, &msg, &msglen);
mbed_official 0:51ac1d130fd4 443 /* lwip: currently retcode is always UPAP_AUTHACK */
mbed_official 0:51ac1d130fd4 444 BZERO(rpasswd, rpasswdlen);
mbed_official 0:51ac1d130fd4 445
mbed_official 0:51ac1d130fd4 446 upap_sresp(u, retcode, id, msg, msglen);
mbed_official 0:51ac1d130fd4 447
mbed_official 0:51ac1d130fd4 448 if (retcode == UPAP_AUTHACK) {
mbed_official 0:51ac1d130fd4 449 u->us_serverstate = UPAPSS_OPEN;
mbed_official 0:51ac1d130fd4 450 auth_peer_success(u->us_unit, PPP_PAP, ruser, ruserlen);
mbed_official 0:51ac1d130fd4 451 } else {
mbed_official 0:51ac1d130fd4 452 u->us_serverstate = UPAPSS_BADAUTH;
mbed_official 0:51ac1d130fd4 453 auth_peer_fail(u->us_unit, PPP_PAP);
mbed_official 0:51ac1d130fd4 454 }
mbed_official 0:51ac1d130fd4 455
mbed_official 0:51ac1d130fd4 456 if (u->us_reqtimeout > 0) {
mbed_official 0:51ac1d130fd4 457 UNTIMEOUT(upap_reqtimeout, u);
mbed_official 0:51ac1d130fd4 458 }
mbed_official 0:51ac1d130fd4 459 }
mbed_official 0:51ac1d130fd4 460
mbed_official 0:51ac1d130fd4 461
mbed_official 0:51ac1d130fd4 462 /*
mbed_official 0:51ac1d130fd4 463 * upap_rauthack - Receive Authenticate-Ack.
mbed_official 0:51ac1d130fd4 464 */
mbed_official 0:51ac1d130fd4 465 static void
mbed_official 0:51ac1d130fd4 466 upap_rauthack(upap_state *u, u_char *inp, int id, int len)
mbed_official 0:51ac1d130fd4 467 {
mbed_official 0:51ac1d130fd4 468 u_char msglen;
mbed_official 0:51ac1d130fd4 469 char *msg;
mbed_official 0:51ac1d130fd4 470
mbed_official 0:51ac1d130fd4 471 LWIP_UNUSED_ARG(id);
mbed_official 0:51ac1d130fd4 472
mbed_official 0:51ac1d130fd4 473 UPAPDEBUG(LOG_INFO, ("pap_rauthack: Rcvd id %d s=%d\n", id, u->us_clientstate));
mbed_official 0:51ac1d130fd4 474
mbed_official 0:51ac1d130fd4 475 if (u->us_clientstate != UPAPCS_AUTHREQ) { /* XXX */
mbed_official 0:51ac1d130fd4 476 UPAPDEBUG(LOG_INFO, ("pap_rauthack: us_clientstate != UPAPCS_AUTHREQ\n"));
mbed_official 0:51ac1d130fd4 477 return;
mbed_official 0:51ac1d130fd4 478 }
mbed_official 0:51ac1d130fd4 479
mbed_official 0:51ac1d130fd4 480 /*
mbed_official 0:51ac1d130fd4 481 * Parse message.
mbed_official 0:51ac1d130fd4 482 */
mbed_official 0:51ac1d130fd4 483 if (len < (int)sizeof (u_char)) {
mbed_official 0:51ac1d130fd4 484 UPAPDEBUG(LOG_INFO, ("pap_rauthack: ignoring missing msg-length.\n"));
mbed_official 0:51ac1d130fd4 485 } else {
mbed_official 0:51ac1d130fd4 486 GETCHAR(msglen, inp);
mbed_official 0:51ac1d130fd4 487 if (msglen > 0) {
mbed_official 0:51ac1d130fd4 488 len -= sizeof (u_char);
mbed_official 0:51ac1d130fd4 489 if (len < msglen) {
mbed_official 0:51ac1d130fd4 490 UPAPDEBUG(LOG_INFO, ("pap_rauthack: rcvd short packet.\n"));
mbed_official 0:51ac1d130fd4 491 return;
mbed_official 0:51ac1d130fd4 492 }
mbed_official 0:51ac1d130fd4 493 msg = (char *) inp;
mbed_official 0:51ac1d130fd4 494 PRINTMSG(msg, msglen);
mbed_official 0:51ac1d130fd4 495 }
mbed_official 0:51ac1d130fd4 496 }
mbed_official 0:51ac1d130fd4 497 UNTIMEOUT(upap_timeout, u); /* Cancel timeout */
mbed_official 0:51ac1d130fd4 498 u->us_clientstate = UPAPCS_OPEN;
mbed_official 0:51ac1d130fd4 499
mbed_official 0:51ac1d130fd4 500 auth_withpeer_success(u->us_unit, PPP_PAP);
mbed_official 0:51ac1d130fd4 501 }
mbed_official 0:51ac1d130fd4 502
mbed_official 0:51ac1d130fd4 503
mbed_official 0:51ac1d130fd4 504 /*
mbed_official 0:51ac1d130fd4 505 * upap_rauthnak - Receive Authenticate-Nak.
mbed_official 0:51ac1d130fd4 506 */
mbed_official 0:51ac1d130fd4 507 static void
mbed_official 0:51ac1d130fd4 508 upap_rauthnak(upap_state *u, u_char *inp, int id, int len)
mbed_official 0:51ac1d130fd4 509 {
mbed_official 0:51ac1d130fd4 510 u_char msglen;
mbed_official 0:51ac1d130fd4 511 char *msg;
mbed_official 0:51ac1d130fd4 512
mbed_official 0:51ac1d130fd4 513 LWIP_UNUSED_ARG(id);
mbed_official 0:51ac1d130fd4 514
mbed_official 0:51ac1d130fd4 515 UPAPDEBUG(LOG_INFO, ("pap_rauthnak: Rcvd id %d s=%d\n", id, u->us_clientstate));
mbed_official 0:51ac1d130fd4 516
mbed_official 0:51ac1d130fd4 517 if (u->us_clientstate != UPAPCS_AUTHREQ) { /* XXX */
mbed_official 0:51ac1d130fd4 518 return;
mbed_official 0:51ac1d130fd4 519 }
mbed_official 0:51ac1d130fd4 520
mbed_official 0:51ac1d130fd4 521 /*
mbed_official 0:51ac1d130fd4 522 * Parse message.
mbed_official 0:51ac1d130fd4 523 */
mbed_official 0:51ac1d130fd4 524 if (len < sizeof (u_char)) {
mbed_official 0:51ac1d130fd4 525 UPAPDEBUG(LOG_INFO, ("pap_rauthnak: ignoring missing msg-length.\n"));
mbed_official 0:51ac1d130fd4 526 } else {
mbed_official 0:51ac1d130fd4 527 GETCHAR(msglen, inp);
mbed_official 0:51ac1d130fd4 528 if(msglen > 0) {
mbed_official 0:51ac1d130fd4 529 len -= sizeof (u_char);
mbed_official 0:51ac1d130fd4 530 if (len < msglen) {
mbed_official 0:51ac1d130fd4 531 UPAPDEBUG(LOG_INFO, ("pap_rauthnak: rcvd short packet.\n"));
mbed_official 0:51ac1d130fd4 532 return;
mbed_official 0:51ac1d130fd4 533 }
mbed_official 0:51ac1d130fd4 534 msg = (char *) inp;
mbed_official 0:51ac1d130fd4 535 PRINTMSG(msg, msglen);
mbed_official 0:51ac1d130fd4 536 }
mbed_official 0:51ac1d130fd4 537 }
mbed_official 0:51ac1d130fd4 538
mbed_official 0:51ac1d130fd4 539 u->us_clientstate = UPAPCS_BADAUTH;
mbed_official 0:51ac1d130fd4 540
mbed_official 0:51ac1d130fd4 541 UPAPDEBUG(LOG_ERR, ("PAP authentication failed\n"));
mbed_official 0:51ac1d130fd4 542 auth_withpeer_fail(u->us_unit, PPP_PAP);
mbed_official 0:51ac1d130fd4 543 }
mbed_official 0:51ac1d130fd4 544
mbed_official 0:51ac1d130fd4 545
mbed_official 0:51ac1d130fd4 546 /*
mbed_official 0:51ac1d130fd4 547 * upap_sauthreq - Send an Authenticate-Request.
mbed_official 0:51ac1d130fd4 548 */
mbed_official 0:51ac1d130fd4 549 static void
mbed_official 0:51ac1d130fd4 550 upap_sauthreq(upap_state *u)
mbed_official 0:51ac1d130fd4 551 {
mbed_official 0:51ac1d130fd4 552 u_char *outp;
mbed_official 0:51ac1d130fd4 553 int outlen;
mbed_official 0:51ac1d130fd4 554
mbed_official 0:51ac1d130fd4 555 outlen = UPAP_HEADERLEN + 2 * sizeof (u_char)
mbed_official 0:51ac1d130fd4 556 + u->us_userlen + u->us_passwdlen;
mbed_official 0:51ac1d130fd4 557 outp = outpacket_buf[u->us_unit];
mbed_official 0:51ac1d130fd4 558
mbed_official 0:51ac1d130fd4 559 MAKEHEADER(outp, PPP_PAP);
mbed_official 0:51ac1d130fd4 560
mbed_official 0:51ac1d130fd4 561 PUTCHAR(UPAP_AUTHREQ, outp);
mbed_official 0:51ac1d130fd4 562 PUTCHAR(++u->us_id, outp);
mbed_official 0:51ac1d130fd4 563 PUTSHORT(outlen, outp);
mbed_official 0:51ac1d130fd4 564 PUTCHAR(u->us_userlen, outp);
mbed_official 0:51ac1d130fd4 565 BCOPY(u->us_user, outp, u->us_userlen);
mbed_official 0:51ac1d130fd4 566 INCPTR(u->us_userlen, outp);
mbed_official 0:51ac1d130fd4 567 PUTCHAR(u->us_passwdlen, outp);
mbed_official 0:51ac1d130fd4 568 BCOPY(u->us_passwd, outp, u->us_passwdlen);
mbed_official 0:51ac1d130fd4 569
mbed_official 0:51ac1d130fd4 570 pppWrite(u->us_unit, outpacket_buf[u->us_unit], outlen + PPP_HDRLEN);
mbed_official 0:51ac1d130fd4 571
mbed_official 0:51ac1d130fd4 572 UPAPDEBUG(LOG_INFO, ("pap_sauth: Sent id %d\n", u->us_id));
mbed_official 0:51ac1d130fd4 573
mbed_official 0:51ac1d130fd4 574 TIMEOUT(upap_timeout, u, u->us_timeouttime);
mbed_official 0:51ac1d130fd4 575 ++u->us_transmits;
mbed_official 0:51ac1d130fd4 576 u->us_clientstate = UPAPCS_AUTHREQ;
mbed_official 0:51ac1d130fd4 577 }
mbed_official 0:51ac1d130fd4 578
mbed_official 0:51ac1d130fd4 579
mbed_official 0:51ac1d130fd4 580 /*
mbed_official 0:51ac1d130fd4 581 * upap_sresp - Send a response (ack or nak).
mbed_official 0:51ac1d130fd4 582 */
mbed_official 0:51ac1d130fd4 583 static void
mbed_official 0:51ac1d130fd4 584 upap_sresp(upap_state *u, u_char code, u_char id, char *msg, int msglen)
mbed_official 0:51ac1d130fd4 585 {
mbed_official 0:51ac1d130fd4 586 u_char *outp;
mbed_official 0:51ac1d130fd4 587 int outlen;
mbed_official 0:51ac1d130fd4 588
mbed_official 0:51ac1d130fd4 589 outlen = UPAP_HEADERLEN + sizeof (u_char) + msglen;
mbed_official 0:51ac1d130fd4 590 outp = outpacket_buf[u->us_unit];
mbed_official 0:51ac1d130fd4 591 MAKEHEADER(outp, PPP_PAP);
mbed_official 0:51ac1d130fd4 592
mbed_official 0:51ac1d130fd4 593 PUTCHAR(code, outp);
mbed_official 0:51ac1d130fd4 594 PUTCHAR(id, outp);
mbed_official 0:51ac1d130fd4 595 PUTSHORT(outlen, outp);
mbed_official 0:51ac1d130fd4 596 PUTCHAR(msglen, outp);
mbed_official 0:51ac1d130fd4 597 BCOPY(msg, outp, msglen);
mbed_official 0:51ac1d130fd4 598 pppWrite(u->us_unit, outpacket_buf[u->us_unit], outlen + PPP_HDRLEN);
mbed_official 0:51ac1d130fd4 599
mbed_official 0:51ac1d130fd4 600 UPAPDEBUG(LOG_INFO, ("pap_sresp: Sent code %d, id %d s=%d\n", code, id, u->us_clientstate));
mbed_official 0:51ac1d130fd4 601 }
mbed_official 0:51ac1d130fd4 602
mbed_official 0:51ac1d130fd4 603 #if PPP_ADDITIONAL_CALLBACKS
mbed_official 0:51ac1d130fd4 604 static char *upap_codenames[] = {
mbed_official 0:51ac1d130fd4 605 "AuthReq", "AuthAck", "AuthNak"
mbed_official 0:51ac1d130fd4 606 };
mbed_official 0:51ac1d130fd4 607
mbed_official 0:51ac1d130fd4 608 /*
mbed_official 0:51ac1d130fd4 609 * upap_printpkt - print the contents of a PAP packet.
mbed_official 0:51ac1d130fd4 610 */
mbed_official 0:51ac1d130fd4 611 static int upap_printpkt(
mbed_official 0:51ac1d130fd4 612 u_char *p,
mbed_official 0:51ac1d130fd4 613 int plen,
mbed_official 0:51ac1d130fd4 614 void (*printer) (void *, char *, ...),
mbed_official 0:51ac1d130fd4 615 void *arg
mbed_official 0:51ac1d130fd4 616 )
mbed_official 0:51ac1d130fd4 617 {
mbed_official 0:51ac1d130fd4 618 LWIP_UNUSED_ARG(p);
mbed_official 0:51ac1d130fd4 619 LWIP_UNUSED_ARG(plen);
mbed_official 0:51ac1d130fd4 620 LWIP_UNUSED_ARG(printer);
mbed_official 0:51ac1d130fd4 621 LWIP_UNUSED_ARG(arg);
mbed_official 0:51ac1d130fd4 622 return 0;
mbed_official 0:51ac1d130fd4 623 }
mbed_official 0:51ac1d130fd4 624 #endif /* PPP_ADDITIONAL_CALLBACKS */
mbed_official 0:51ac1d130fd4 625
mbed_official 0:51ac1d130fd4 626 #endif /* PAP_SUPPORT */
mbed_official 0:51ac1d130fd4 627
mbed_official 0:51ac1d130fd4 628 #endif /* PPP_SUPPORT */