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Dependencies:   BufferedSerial FatFileSystemCpp mbed

EthernetInterface/lwip/netif/ppp/pap.c@22:0dd9c1b5664a, 2021-07-05 (annotated)

Committer:
AndyA
Date:
Mon Jul 05 15:30:14 2021 +0000
Revision:
22:0dd9c1b5664a
First pass at adding UDP FreeD output

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AndyA 22:0dd9c1b5664a 1 /*****************************************************************************
AndyA 22:0dd9c1b5664a 2 * pap.c - Network Password Authentication Protocol program file.
AndyA 22:0dd9c1b5664a 3 *
AndyA 22:0dd9c1b5664a 4 * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc.
AndyA 22:0dd9c1b5664a 5 * portions Copyright (c) 1997 by Global Election Systems Inc.
AndyA 22:0dd9c1b5664a 6 *
AndyA 22:0dd9c1b5664a 7 * The authors hereby grant permission to use, copy, modify, distribute,
AndyA 22:0dd9c1b5664a 8 * and license this software and its documentation for any purpose, provided
AndyA 22:0dd9c1b5664a 9 * that existing copyright notices are retained in all copies and that this
AndyA 22:0dd9c1b5664a 10 * notice and the following disclaimer are included verbatim in any
AndyA 22:0dd9c1b5664a 11 * distributions. No written agreement, license, or royalty fee is required
AndyA 22:0dd9c1b5664a 12 * for any of the authorized uses.
AndyA 22:0dd9c1b5664a 13 *
AndyA 22:0dd9c1b5664a 14 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR
AndyA 22:0dd9c1b5664a 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
AndyA 22:0dd9c1b5664a 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
AndyA 22:0dd9c1b5664a 17 * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
AndyA 22:0dd9c1b5664a 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
AndyA 22:0dd9c1b5664a 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
AndyA 22:0dd9c1b5664a 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
AndyA 22:0dd9c1b5664a 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
AndyA 22:0dd9c1b5664a 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
AndyA 22:0dd9c1b5664a 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AndyA 22:0dd9c1b5664a 24 *
AndyA 22:0dd9c1b5664a 25 ******************************************************************************
AndyA 22:0dd9c1b5664a 26 * REVISION HISTORY
AndyA 22:0dd9c1b5664a 27 *
AndyA 22:0dd9c1b5664a 28 * 03-01-01 Marc Boucher <marc@mbsi.ca>
AndyA 22:0dd9c1b5664a 29 * Ported to lwIP.
AndyA 22:0dd9c1b5664a 30 * 97-12-12 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc.
AndyA 22:0dd9c1b5664a 31 * Original.
AndyA 22:0dd9c1b5664a 32 *****************************************************************************/
AndyA 22:0dd9c1b5664a 33 /*
AndyA 22:0dd9c1b5664a 34 * upap.c - User/Password Authentication Protocol.
AndyA 22:0dd9c1b5664a 35 *
AndyA 22:0dd9c1b5664a 36 * Copyright (c) 1989 Carnegie Mellon University.
AndyA 22:0dd9c1b5664a 37 * All rights reserved.
AndyA 22:0dd9c1b5664a 38 *
AndyA 22:0dd9c1b5664a 39 * Redistribution and use in source and binary forms are permitted
AndyA 22:0dd9c1b5664a 40 * provided that the above copyright notice and this paragraph are
AndyA 22:0dd9c1b5664a 41 * duplicated in all such forms and that any documentation,
AndyA 22:0dd9c1b5664a 42 * advertising materials, and other materials related to such
AndyA 22:0dd9c1b5664a 43 * distribution and use acknowledge that the software was developed
AndyA 22:0dd9c1b5664a 44 * by Carnegie Mellon University. The name of the
AndyA 22:0dd9c1b5664a 45 * University may not be used to endorse or promote products derived
AndyA 22:0dd9c1b5664a 46 * from this software without specific prior written permission.
AndyA 22:0dd9c1b5664a 47 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
AndyA 22:0dd9c1b5664a 48 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
AndyA 22:0dd9c1b5664a 49 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
AndyA 22:0dd9c1b5664a 50 */
AndyA 22:0dd9c1b5664a 51
AndyA 22:0dd9c1b5664a 52 #include "lwip/opt.h"
AndyA 22:0dd9c1b5664a 53
AndyA 22:0dd9c1b5664a 54 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
AndyA 22:0dd9c1b5664a 55
AndyA 22:0dd9c1b5664a 56 #if PAP_SUPPORT /* don't build if not configured for use in lwipopts.h */
AndyA 22:0dd9c1b5664a 57
AndyA 22:0dd9c1b5664a 58 #include "ppp.h"
AndyA 22:0dd9c1b5664a 59 #include "pppdebug.h"
AndyA 22:0dd9c1b5664a 60
AndyA 22:0dd9c1b5664a 61 #include "auth.h"
AndyA 22:0dd9c1b5664a 62 #include "pap.h"
AndyA 22:0dd9c1b5664a 63
AndyA 22:0dd9c1b5664a 64 #include <string.h>
AndyA 22:0dd9c1b5664a 65
AndyA 22:0dd9c1b5664a 66 #if 0 /* UNUSED */
AndyA 22:0dd9c1b5664a 67 static bool hide_password = 1;
AndyA 22:0dd9c1b5664a 68
AndyA 22:0dd9c1b5664a 69 /*
AndyA 22:0dd9c1b5664a 70 * Command-line options.
AndyA 22:0dd9c1b5664a 71 */
AndyA 22:0dd9c1b5664a 72 static option_t pap_option_list[] = {
AndyA 22:0dd9c1b5664a 73 { "hide-password", o_bool, &hide_password,
AndyA 22:0dd9c1b5664a 74 "Don't output passwords to log", 1 },
AndyA 22:0dd9c1b5664a 75 { "show-password", o_bool, &hide_password,
AndyA 22:0dd9c1b5664a 76 "Show password string in debug log messages", 0 },
AndyA 22:0dd9c1b5664a 77 { "pap-restart", o_int, &upap[0].us_timeouttime,
AndyA 22:0dd9c1b5664a 78 "Set retransmit timeout for PAP" },
AndyA 22:0dd9c1b5664a 79 { "pap-max-authreq", o_int, &upap[0].us_maxtransmits,
AndyA 22:0dd9c1b5664a 80 "Set max number of transmissions for auth-reqs" },
AndyA 22:0dd9c1b5664a 81 { "pap-timeout", o_int, &upap[0].us_reqtimeout,
AndyA 22:0dd9c1b5664a 82 "Set time limit for peer PAP authentication" },
AndyA 22:0dd9c1b5664a 83 { NULL }
AndyA 22:0dd9c1b5664a 84 };
AndyA 22:0dd9c1b5664a 85 #endif
AndyA 22:0dd9c1b5664a 86
AndyA 22:0dd9c1b5664a 87 /*
AndyA 22:0dd9c1b5664a 88 * Protocol entry points.
AndyA 22:0dd9c1b5664a 89 */
AndyA 22:0dd9c1b5664a 90 static void upap_init (int);
AndyA 22:0dd9c1b5664a 91 static void upap_lowerup (int);
AndyA 22:0dd9c1b5664a 92 static void upap_lowerdown (int);
AndyA 22:0dd9c1b5664a 93 static void upap_input (int, u_char *, int);
AndyA 22:0dd9c1b5664a 94 static void upap_protrej (int);
AndyA 22:0dd9c1b5664a 95 #if PPP_ADDITIONAL_CALLBACKS
AndyA 22:0dd9c1b5664a 96 static int upap_printpkt (u_char *, int, void (*)(void *, char *, ...), void *);
AndyA 22:0dd9c1b5664a 97 #endif /* PPP_ADDITIONAL_CALLBACKS */
AndyA 22:0dd9c1b5664a 98
AndyA 22:0dd9c1b5664a 99 struct protent pap_protent = {
AndyA 22:0dd9c1b5664a 100 PPP_PAP,
AndyA 22:0dd9c1b5664a 101 upap_init,
AndyA 22:0dd9c1b5664a 102 upap_input,
AndyA 22:0dd9c1b5664a 103 upap_protrej,
AndyA 22:0dd9c1b5664a 104 upap_lowerup,
AndyA 22:0dd9c1b5664a 105 upap_lowerdown,
AndyA 22:0dd9c1b5664a 106 NULL,
AndyA 22:0dd9c1b5664a 107 NULL,
AndyA 22:0dd9c1b5664a 108 #if PPP_ADDITIONAL_CALLBACKS
AndyA 22:0dd9c1b5664a 109 upap_printpkt,
AndyA 22:0dd9c1b5664a 110 NULL,
AndyA 22:0dd9c1b5664a 111 #endif /* PPP_ADDITIONAL_CALLBACKS */
AndyA 22:0dd9c1b5664a 112 1,
AndyA 22:0dd9c1b5664a 113 "PAP",
AndyA 22:0dd9c1b5664a 114 #if PPP_ADDITIONAL_CALLBACKS
AndyA 22:0dd9c1b5664a 115 NULL,
AndyA 22:0dd9c1b5664a 116 NULL,
AndyA 22:0dd9c1b5664a 117 NULL
AndyA 22:0dd9c1b5664a 118 #endif /* PPP_ADDITIONAL_CALLBACKS */
AndyA 22:0dd9c1b5664a 119 };
AndyA 22:0dd9c1b5664a 120
AndyA 22:0dd9c1b5664a 121 upap_state upap[NUM_PPP]; /* UPAP state; one for each unit */
AndyA 22:0dd9c1b5664a 122
AndyA 22:0dd9c1b5664a 123 static void upap_timeout (void *);
AndyA 22:0dd9c1b5664a 124 static void upap_reqtimeout(void *);
AndyA 22:0dd9c1b5664a 125 static void upap_rauthreq (upap_state *, u_char *, u_char, int);
AndyA 22:0dd9c1b5664a 126 static void upap_rauthack (upap_state *, u_char *, int, int);
AndyA 22:0dd9c1b5664a 127 static void upap_rauthnak (upap_state *, u_char *, int, int);
AndyA 22:0dd9c1b5664a 128 static void upap_sauthreq (upap_state *);
AndyA 22:0dd9c1b5664a 129 static void upap_sresp (upap_state *, u_char, u_char, char *, int);
AndyA 22:0dd9c1b5664a 130
AndyA 22:0dd9c1b5664a 131
AndyA 22:0dd9c1b5664a 132 /*
AndyA 22:0dd9c1b5664a 133 * upap_init - Initialize a UPAP unit.
AndyA 22:0dd9c1b5664a 134 */
AndyA 22:0dd9c1b5664a 135 static void
AndyA 22:0dd9c1b5664a 136 upap_init(int unit)
AndyA 22:0dd9c1b5664a 137 {
AndyA 22:0dd9c1b5664a 138 upap_state *u = &upap[unit];
AndyA 22:0dd9c1b5664a 139
AndyA 22:0dd9c1b5664a 140 UPAPDEBUG(LOG_INFO, ("upap_init: %d\n", unit));
AndyA 22:0dd9c1b5664a 141 u->us_unit = unit;
AndyA 22:0dd9c1b5664a 142 u->us_user = NULL;
AndyA 22:0dd9c1b5664a 143 u->us_userlen = 0;
AndyA 22:0dd9c1b5664a 144 u->us_passwd = NULL;
AndyA 22:0dd9c1b5664a 145 u->us_passwdlen = 0;
AndyA 22:0dd9c1b5664a 146 u->us_clientstate = UPAPCS_INITIAL;
AndyA 22:0dd9c1b5664a 147 u->us_serverstate = UPAPSS_INITIAL;
AndyA 22:0dd9c1b5664a 148 u->us_id = 0;
AndyA 22:0dd9c1b5664a 149 u->us_timeouttime = UPAP_DEFTIMEOUT;
AndyA 22:0dd9c1b5664a 150 u->us_maxtransmits = 10;
AndyA 22:0dd9c1b5664a 151 u->us_reqtimeout = UPAP_DEFREQTIME;
AndyA 22:0dd9c1b5664a 152 }
AndyA 22:0dd9c1b5664a 153
AndyA 22:0dd9c1b5664a 154 /*
AndyA 22:0dd9c1b5664a 155 * upap_authwithpeer - Authenticate us with our peer (start client).
AndyA 22:0dd9c1b5664a 156 *
AndyA 22:0dd9c1b5664a 157 * Set new state and send authenticate's.
AndyA 22:0dd9c1b5664a 158 */
AndyA 22:0dd9c1b5664a 159 void
AndyA 22:0dd9c1b5664a 160 upap_authwithpeer(int unit, char *user, char *password)
AndyA 22:0dd9c1b5664a 161 {
AndyA 22:0dd9c1b5664a 162 upap_state *u = &upap[unit];
AndyA 22:0dd9c1b5664a 163
AndyA 22:0dd9c1b5664a 164 UPAPDEBUG(LOG_INFO, ("upap_authwithpeer: %d user=%s password=%s s=%d\n",
AndyA 22:0dd9c1b5664a 165 unit, user, password, u->us_clientstate));
AndyA 22:0dd9c1b5664a 166
AndyA 22:0dd9c1b5664a 167 /* Save the username and password we're given */
AndyA 22:0dd9c1b5664a 168 u->us_user = user;
AndyA 22:0dd9c1b5664a 169 u->us_userlen = (int)strlen(user);
AndyA 22:0dd9c1b5664a 170 u->us_passwd = password;
AndyA 22:0dd9c1b5664a 171 u->us_passwdlen = (int)strlen(password);
AndyA 22:0dd9c1b5664a 172
AndyA 22:0dd9c1b5664a 173 u->us_transmits = 0;
AndyA 22:0dd9c1b5664a 174
AndyA 22:0dd9c1b5664a 175 /* Lower layer up yet? */
AndyA 22:0dd9c1b5664a 176 if (u->us_clientstate == UPAPCS_INITIAL ||
AndyA 22:0dd9c1b5664a 177 u->us_clientstate == UPAPCS_PENDING) {
AndyA 22:0dd9c1b5664a 178 u->us_clientstate = UPAPCS_PENDING;
AndyA 22:0dd9c1b5664a 179 return;
AndyA 22:0dd9c1b5664a 180 }
AndyA 22:0dd9c1b5664a 181
AndyA 22:0dd9c1b5664a 182 upap_sauthreq(u); /* Start protocol */
AndyA 22:0dd9c1b5664a 183 }
AndyA 22:0dd9c1b5664a 184
AndyA 22:0dd9c1b5664a 185
AndyA 22:0dd9c1b5664a 186 /*
AndyA 22:0dd9c1b5664a 187 * upap_authpeer - Authenticate our peer (start server).
AndyA 22:0dd9c1b5664a 188 *
AndyA 22:0dd9c1b5664a 189 * Set new state.
AndyA 22:0dd9c1b5664a 190 */
AndyA 22:0dd9c1b5664a 191 void
AndyA 22:0dd9c1b5664a 192 upap_authpeer(int unit)
AndyA 22:0dd9c1b5664a 193 {
AndyA 22:0dd9c1b5664a 194 upap_state *u = &upap[unit];
AndyA 22:0dd9c1b5664a 195
AndyA 22:0dd9c1b5664a 196 /* Lower layer up yet? */
AndyA 22:0dd9c1b5664a 197 if (u->us_serverstate == UPAPSS_INITIAL ||
AndyA 22:0dd9c1b5664a 198 u->us_serverstate == UPAPSS_PENDING) {
AndyA 22:0dd9c1b5664a 199 u->us_serverstate = UPAPSS_PENDING;
AndyA 22:0dd9c1b5664a 200 return;
AndyA 22:0dd9c1b5664a 201 }
AndyA 22:0dd9c1b5664a 202
AndyA 22:0dd9c1b5664a 203 u->us_serverstate = UPAPSS_LISTEN;
AndyA 22:0dd9c1b5664a 204 if (u->us_reqtimeout > 0) {
AndyA 22:0dd9c1b5664a 205 TIMEOUT(upap_reqtimeout, u, u->us_reqtimeout);
AndyA 22:0dd9c1b5664a 206 }
AndyA 22:0dd9c1b5664a 207 }
AndyA 22:0dd9c1b5664a 208
AndyA 22:0dd9c1b5664a 209 /*
AndyA 22:0dd9c1b5664a 210 * upap_timeout - Retransmission timer for sending auth-reqs expired.
AndyA 22:0dd9c1b5664a 211 */
AndyA 22:0dd9c1b5664a 212 static void
AndyA 22:0dd9c1b5664a 213 upap_timeout(void *arg)
AndyA 22:0dd9c1b5664a 214 {
AndyA 22:0dd9c1b5664a 215 upap_state *u = (upap_state *) arg;
AndyA 22:0dd9c1b5664a 216
AndyA 22:0dd9c1b5664a 217 UPAPDEBUG(LOG_INFO, ("upap_timeout: %d timeout %d expired s=%d\n",
AndyA 22:0dd9c1b5664a 218 u->us_unit, u->us_timeouttime, u->us_clientstate));
AndyA 22:0dd9c1b5664a 219
AndyA 22:0dd9c1b5664a 220 if (u->us_clientstate != UPAPCS_AUTHREQ) {
AndyA 22:0dd9c1b5664a 221 UPAPDEBUG(LOG_INFO, ("upap_timeout: not in AUTHREQ state!\n"));
AndyA 22:0dd9c1b5664a 222 return;
AndyA 22:0dd9c1b5664a 223 }
AndyA 22:0dd9c1b5664a 224
AndyA 22:0dd9c1b5664a 225 if (u->us_transmits >= u->us_maxtransmits) {
AndyA 22:0dd9c1b5664a 226 /* give up in disgust */
AndyA 22:0dd9c1b5664a 227 UPAPDEBUG(LOG_ERR, ("No response to PAP authenticate-requests\n"));
AndyA 22:0dd9c1b5664a 228 u->us_clientstate = UPAPCS_BADAUTH;
AndyA 22:0dd9c1b5664a 229 auth_withpeer_fail(u->us_unit, PPP_PAP);
AndyA 22:0dd9c1b5664a 230 return;
AndyA 22:0dd9c1b5664a 231 }
AndyA 22:0dd9c1b5664a 232
AndyA 22:0dd9c1b5664a 233 upap_sauthreq(u); /* Send Authenticate-Request and set upap timeout*/
AndyA 22:0dd9c1b5664a 234 }
AndyA 22:0dd9c1b5664a 235
AndyA 22:0dd9c1b5664a 236
AndyA 22:0dd9c1b5664a 237 /*
AndyA 22:0dd9c1b5664a 238 * upap_reqtimeout - Give up waiting for the peer to send an auth-req.
AndyA 22:0dd9c1b5664a 239 */
AndyA 22:0dd9c1b5664a 240 static void
AndyA 22:0dd9c1b5664a 241 upap_reqtimeout(void *arg)
AndyA 22:0dd9c1b5664a 242 {
AndyA 22:0dd9c1b5664a 243 upap_state *u = (upap_state *) arg;
AndyA 22:0dd9c1b5664a 244
AndyA 22:0dd9c1b5664a 245 if (u->us_serverstate != UPAPSS_LISTEN) {
AndyA 22:0dd9c1b5664a 246 return; /* huh?? */
AndyA 22:0dd9c1b5664a 247 }
AndyA 22:0dd9c1b5664a 248
AndyA 22:0dd9c1b5664a 249 auth_peer_fail(u->us_unit, PPP_PAP);
AndyA 22:0dd9c1b5664a 250 u->us_serverstate = UPAPSS_BADAUTH;
AndyA 22:0dd9c1b5664a 251 }
AndyA 22:0dd9c1b5664a 252
AndyA 22:0dd9c1b5664a 253
AndyA 22:0dd9c1b5664a 254 /*
AndyA 22:0dd9c1b5664a 255 * upap_lowerup - The lower layer is up.
AndyA 22:0dd9c1b5664a 256 *
AndyA 22:0dd9c1b5664a 257 * Start authenticating if pending.
AndyA 22:0dd9c1b5664a 258 */
AndyA 22:0dd9c1b5664a 259 static void
AndyA 22:0dd9c1b5664a 260 upap_lowerup(int unit)
AndyA 22:0dd9c1b5664a 261 {
AndyA 22:0dd9c1b5664a 262 upap_state *u = &upap[unit];
AndyA 22:0dd9c1b5664a 263
AndyA 22:0dd9c1b5664a 264 UPAPDEBUG(LOG_INFO, ("upap_lowerup: init %d clientstate s=%d\n", unit, u->us_clientstate));
AndyA 22:0dd9c1b5664a 265
AndyA 22:0dd9c1b5664a 266 if (u->us_clientstate == UPAPCS_INITIAL) {
AndyA 22:0dd9c1b5664a 267 u->us_clientstate = UPAPCS_CLOSED;
AndyA 22:0dd9c1b5664a 268 } else if (u->us_clientstate == UPAPCS_PENDING) {
AndyA 22:0dd9c1b5664a 269 upap_sauthreq(u); /* send an auth-request */
AndyA 22:0dd9c1b5664a 270 /* now client state is UPAPCS__AUTHREQ */
AndyA 22:0dd9c1b5664a 271 }
AndyA 22:0dd9c1b5664a 272
AndyA 22:0dd9c1b5664a 273 if (u->us_serverstate == UPAPSS_INITIAL) {
AndyA 22:0dd9c1b5664a 274 u->us_serverstate = UPAPSS_CLOSED;
AndyA 22:0dd9c1b5664a 275 } else if (u->us_serverstate == UPAPSS_PENDING) {
AndyA 22:0dd9c1b5664a 276 u->us_serverstate = UPAPSS_LISTEN;
AndyA 22:0dd9c1b5664a 277 if (u->us_reqtimeout > 0) {
AndyA 22:0dd9c1b5664a 278 TIMEOUT(upap_reqtimeout, u, u->us_reqtimeout);
AndyA 22:0dd9c1b5664a 279 }
AndyA 22:0dd9c1b5664a 280 }
AndyA 22:0dd9c1b5664a 281 }
AndyA 22:0dd9c1b5664a 282
AndyA 22:0dd9c1b5664a 283
AndyA 22:0dd9c1b5664a 284 /*
AndyA 22:0dd9c1b5664a 285 * upap_lowerdown - The lower layer is down.
AndyA 22:0dd9c1b5664a 286 *
AndyA 22:0dd9c1b5664a 287 * Cancel all timeouts.
AndyA 22:0dd9c1b5664a 288 */
AndyA 22:0dd9c1b5664a 289 static void
AndyA 22:0dd9c1b5664a 290 upap_lowerdown(int unit)
AndyA 22:0dd9c1b5664a 291 {
AndyA 22:0dd9c1b5664a 292 upap_state *u = &upap[unit];
AndyA 22:0dd9c1b5664a 293
AndyA 22:0dd9c1b5664a 294 UPAPDEBUG(LOG_INFO, ("upap_lowerdown: %d s=%d\n", unit, u->us_clientstate));
AndyA 22:0dd9c1b5664a 295
AndyA 22:0dd9c1b5664a 296 if (u->us_clientstate == UPAPCS_AUTHREQ) { /* Timeout pending? */
AndyA 22:0dd9c1b5664a 297 UNTIMEOUT(upap_timeout, u); /* Cancel timeout */
AndyA 22:0dd9c1b5664a 298 }
AndyA 22:0dd9c1b5664a 299 if (u->us_serverstate == UPAPSS_LISTEN && u->us_reqtimeout > 0) {
AndyA 22:0dd9c1b5664a 300 UNTIMEOUT(upap_reqtimeout, u);
AndyA 22:0dd9c1b5664a 301 }
AndyA 22:0dd9c1b5664a 302
AndyA 22:0dd9c1b5664a 303 u->us_clientstate = UPAPCS_INITIAL;
AndyA 22:0dd9c1b5664a 304 u->us_serverstate = UPAPSS_INITIAL;
AndyA 22:0dd9c1b5664a 305 }
AndyA 22:0dd9c1b5664a 306
AndyA 22:0dd9c1b5664a 307
AndyA 22:0dd9c1b5664a 308 /*
AndyA 22:0dd9c1b5664a 309 * upap_protrej - Peer doesn't speak this protocol.
AndyA 22:0dd9c1b5664a 310 *
AndyA 22:0dd9c1b5664a 311 * This shouldn't happen. In any case, pretend lower layer went down.
AndyA 22:0dd9c1b5664a 312 */
AndyA 22:0dd9c1b5664a 313 static void
AndyA 22:0dd9c1b5664a 314 upap_protrej(int unit)
AndyA 22:0dd9c1b5664a 315 {
AndyA 22:0dd9c1b5664a 316 upap_state *u = &upap[unit];
AndyA 22:0dd9c1b5664a 317
AndyA 22:0dd9c1b5664a 318 if (u->us_clientstate == UPAPCS_AUTHREQ) {
AndyA 22:0dd9c1b5664a 319 UPAPDEBUG(LOG_ERR, ("PAP authentication failed due to protocol-reject\n"));
AndyA 22:0dd9c1b5664a 320 auth_withpeer_fail(unit, PPP_PAP);
AndyA 22:0dd9c1b5664a 321 }
AndyA 22:0dd9c1b5664a 322 if (u->us_serverstate == UPAPSS_LISTEN) {
AndyA 22:0dd9c1b5664a 323 UPAPDEBUG(LOG_ERR, ("PAP authentication of peer failed (protocol-reject)\n"));
AndyA 22:0dd9c1b5664a 324 auth_peer_fail(unit, PPP_PAP);
AndyA 22:0dd9c1b5664a 325 }
AndyA 22:0dd9c1b5664a 326 upap_lowerdown(unit);
AndyA 22:0dd9c1b5664a 327 }
AndyA 22:0dd9c1b5664a 328
AndyA 22:0dd9c1b5664a 329
AndyA 22:0dd9c1b5664a 330 /*
AndyA 22:0dd9c1b5664a 331 * upap_input - Input UPAP packet.
AndyA 22:0dd9c1b5664a 332 */
AndyA 22:0dd9c1b5664a 333 static void
AndyA 22:0dd9c1b5664a 334 upap_input(int unit, u_char *inpacket, int l)
AndyA 22:0dd9c1b5664a 335 {
AndyA 22:0dd9c1b5664a 336 upap_state *u = &upap[unit];
AndyA 22:0dd9c1b5664a 337 u_char *inp;
AndyA 22:0dd9c1b5664a 338 u_char code, id;
AndyA 22:0dd9c1b5664a 339 int len;
AndyA 22:0dd9c1b5664a 340
AndyA 22:0dd9c1b5664a 341 /*
AndyA 22:0dd9c1b5664a 342 * Parse header (code, id and length).
AndyA 22:0dd9c1b5664a 343 * If packet too short, drop it.
AndyA 22:0dd9c1b5664a 344 */
AndyA 22:0dd9c1b5664a 345 inp = inpacket;
AndyA 22:0dd9c1b5664a 346 if (l < (int)UPAP_HEADERLEN) {
AndyA 22:0dd9c1b5664a 347 UPAPDEBUG(LOG_INFO, ("pap_input: rcvd short header.\n"));
AndyA 22:0dd9c1b5664a 348 return;
AndyA 22:0dd9c1b5664a 349 }
AndyA 22:0dd9c1b5664a 350 GETCHAR(code, inp);
AndyA 22:0dd9c1b5664a 351 GETCHAR(id, inp);
AndyA 22:0dd9c1b5664a 352 GETSHORT(len, inp);
AndyA 22:0dd9c1b5664a 353 if (len < (int)UPAP_HEADERLEN) {
AndyA 22:0dd9c1b5664a 354 UPAPDEBUG(LOG_INFO, ("pap_input: rcvd illegal length.\n"));
AndyA 22:0dd9c1b5664a 355 return;
AndyA 22:0dd9c1b5664a 356 }
AndyA 22:0dd9c1b5664a 357 if (len > l) {
AndyA 22:0dd9c1b5664a 358 UPAPDEBUG(LOG_INFO, ("pap_input: rcvd short packet.\n"));
AndyA 22:0dd9c1b5664a 359 return;
AndyA 22:0dd9c1b5664a 360 }
AndyA 22:0dd9c1b5664a 361 len -= UPAP_HEADERLEN;
AndyA 22:0dd9c1b5664a 362
AndyA 22:0dd9c1b5664a 363 /*
AndyA 22:0dd9c1b5664a 364 * Action depends on code.
AndyA 22:0dd9c1b5664a 365 */
AndyA 22:0dd9c1b5664a 366 switch (code) {
AndyA 22:0dd9c1b5664a 367 case UPAP_AUTHREQ:
AndyA 22:0dd9c1b5664a 368 upap_rauthreq(u, inp, id, len);
AndyA 22:0dd9c1b5664a 369 break;
AndyA 22:0dd9c1b5664a 370
AndyA 22:0dd9c1b5664a 371 case UPAP_AUTHACK:
AndyA 22:0dd9c1b5664a 372 upap_rauthack(u, inp, id, len);
AndyA 22:0dd9c1b5664a 373 break;
AndyA 22:0dd9c1b5664a 374
AndyA 22:0dd9c1b5664a 375 case UPAP_AUTHNAK:
AndyA 22:0dd9c1b5664a 376 upap_rauthnak(u, inp, id, len);
AndyA 22:0dd9c1b5664a 377 break;
AndyA 22:0dd9c1b5664a 378
AndyA 22:0dd9c1b5664a 379 default: /* XXX Need code reject */
AndyA 22:0dd9c1b5664a 380 UPAPDEBUG(LOG_INFO, ("pap_input: UNHANDLED default: code: %d, id: %d, len: %d.\n", code, id, len));
AndyA 22:0dd9c1b5664a 381 break;
AndyA 22:0dd9c1b5664a 382 }
AndyA 22:0dd9c1b5664a 383 }
AndyA 22:0dd9c1b5664a 384
AndyA 22:0dd9c1b5664a 385
AndyA 22:0dd9c1b5664a 386 /*
AndyA 22:0dd9c1b5664a 387 * upap_rauth - Receive Authenticate.
AndyA 22:0dd9c1b5664a 388 */
AndyA 22:0dd9c1b5664a 389 static void
AndyA 22:0dd9c1b5664a 390 upap_rauthreq(upap_state *u, u_char *inp, u_char id, int len)
AndyA 22:0dd9c1b5664a 391 {
AndyA 22:0dd9c1b5664a 392 u_char ruserlen, rpasswdlen;
AndyA 22:0dd9c1b5664a 393 char *ruser, *rpasswd;
AndyA 22:0dd9c1b5664a 394 u_char retcode;
AndyA 22:0dd9c1b5664a 395 char *msg;
AndyA 22:0dd9c1b5664a 396 int msglen;
AndyA 22:0dd9c1b5664a 397
AndyA 22:0dd9c1b5664a 398 UPAPDEBUG(LOG_INFO, ("pap_rauth: Rcvd id %d.\n", id));
AndyA 22:0dd9c1b5664a 399
AndyA 22:0dd9c1b5664a 400 if (u->us_serverstate < UPAPSS_LISTEN) {
AndyA 22:0dd9c1b5664a 401 return;
AndyA 22:0dd9c1b5664a 402 }
AndyA 22:0dd9c1b5664a 403
AndyA 22:0dd9c1b5664a 404 /*
AndyA 22:0dd9c1b5664a 405 * If we receive a duplicate authenticate-request, we are
AndyA 22:0dd9c1b5664a 406 * supposed to return the same status as for the first request.
AndyA 22:0dd9c1b5664a 407 */
AndyA 22:0dd9c1b5664a 408 if (u->us_serverstate == UPAPSS_OPEN) {
AndyA 22:0dd9c1b5664a 409 upap_sresp(u, UPAP_AUTHACK, id, "", 0); /* return auth-ack */
AndyA 22:0dd9c1b5664a 410 return;
AndyA 22:0dd9c1b5664a 411 }
AndyA 22:0dd9c1b5664a 412 if (u->us_serverstate == UPAPSS_BADAUTH) {
AndyA 22:0dd9c1b5664a 413 upap_sresp(u, UPAP_AUTHNAK, id, "", 0); /* return auth-nak */
AndyA 22:0dd9c1b5664a 414 return;
AndyA 22:0dd9c1b5664a 415 }
AndyA 22:0dd9c1b5664a 416
AndyA 22:0dd9c1b5664a 417 /*
AndyA 22:0dd9c1b5664a 418 * Parse user/passwd.
AndyA 22:0dd9c1b5664a 419 */
AndyA 22:0dd9c1b5664a 420 if (len < (int)sizeof (u_char)) {
AndyA 22:0dd9c1b5664a 421 UPAPDEBUG(LOG_INFO, ("pap_rauth: rcvd short packet.\n"));
AndyA 22:0dd9c1b5664a 422 return;
AndyA 22:0dd9c1b5664a 423 }
AndyA 22:0dd9c1b5664a 424 GETCHAR(ruserlen, inp);
AndyA 22:0dd9c1b5664a 425 len -= sizeof (u_char) + ruserlen + sizeof (u_char);
AndyA 22:0dd9c1b5664a 426 if (len < 0) {
AndyA 22:0dd9c1b5664a 427 UPAPDEBUG(LOG_INFO, ("pap_rauth: rcvd short packet.\n"));
AndyA 22:0dd9c1b5664a 428 return;
AndyA 22:0dd9c1b5664a 429 }
AndyA 22:0dd9c1b5664a 430 ruser = (char *) inp;
AndyA 22:0dd9c1b5664a 431 INCPTR(ruserlen, inp);
AndyA 22:0dd9c1b5664a 432 GETCHAR(rpasswdlen, inp);
AndyA 22:0dd9c1b5664a 433 if (len < rpasswdlen) {
AndyA 22:0dd9c1b5664a 434 UPAPDEBUG(LOG_INFO, ("pap_rauth: rcvd short packet.\n"));
AndyA 22:0dd9c1b5664a 435 return;
AndyA 22:0dd9c1b5664a 436 }
AndyA 22:0dd9c1b5664a 437 rpasswd = (char *) inp;
AndyA 22:0dd9c1b5664a 438
AndyA 22:0dd9c1b5664a 439 /*
AndyA 22:0dd9c1b5664a 440 * Check the username and password given.
AndyA 22:0dd9c1b5664a 441 */
AndyA 22:0dd9c1b5664a 442 retcode = check_passwd(u->us_unit, ruser, ruserlen, rpasswd, rpasswdlen, &msg, &msglen);
AndyA 22:0dd9c1b5664a 443 /* lwip: currently retcode is always UPAP_AUTHACK */
AndyA 22:0dd9c1b5664a 444 BZERO(rpasswd, rpasswdlen);
AndyA 22:0dd9c1b5664a 445
AndyA 22:0dd9c1b5664a 446 upap_sresp(u, retcode, id, msg, msglen);
AndyA 22:0dd9c1b5664a 447
AndyA 22:0dd9c1b5664a 448 if (retcode == UPAP_AUTHACK) {
AndyA 22:0dd9c1b5664a 449 u->us_serverstate = UPAPSS_OPEN;
AndyA 22:0dd9c1b5664a 450 auth_peer_success(u->us_unit, PPP_PAP, ruser, ruserlen);
AndyA 22:0dd9c1b5664a 451 } else {
AndyA 22:0dd9c1b5664a 452 u->us_serverstate = UPAPSS_BADAUTH;
AndyA 22:0dd9c1b5664a 453 auth_peer_fail(u->us_unit, PPP_PAP);
AndyA 22:0dd9c1b5664a 454 }
AndyA 22:0dd9c1b5664a 455
AndyA 22:0dd9c1b5664a 456 if (u->us_reqtimeout > 0) {
AndyA 22:0dd9c1b5664a 457 UNTIMEOUT(upap_reqtimeout, u);
AndyA 22:0dd9c1b5664a 458 }
AndyA 22:0dd9c1b5664a 459 }
AndyA 22:0dd9c1b5664a 460
AndyA 22:0dd9c1b5664a 461
AndyA 22:0dd9c1b5664a 462 /*
AndyA 22:0dd9c1b5664a 463 * upap_rauthack - Receive Authenticate-Ack.
AndyA 22:0dd9c1b5664a 464 */
AndyA 22:0dd9c1b5664a 465 static void
AndyA 22:0dd9c1b5664a 466 upap_rauthack(upap_state *u, u_char *inp, int id, int len)
AndyA 22:0dd9c1b5664a 467 {
AndyA 22:0dd9c1b5664a 468 u_char msglen;
AndyA 22:0dd9c1b5664a 469 char *msg;
AndyA 22:0dd9c1b5664a 470
AndyA 22:0dd9c1b5664a 471 LWIP_UNUSED_ARG(id);
AndyA 22:0dd9c1b5664a 472
AndyA 22:0dd9c1b5664a 473 UPAPDEBUG(LOG_INFO, ("pap_rauthack: Rcvd id %d s=%d\n", id, u->us_clientstate));
AndyA 22:0dd9c1b5664a 474
AndyA 22:0dd9c1b5664a 475 if (u->us_clientstate != UPAPCS_AUTHREQ) { /* XXX */
AndyA 22:0dd9c1b5664a 476 UPAPDEBUG(LOG_INFO, ("pap_rauthack: us_clientstate != UPAPCS_AUTHREQ\n"));
AndyA 22:0dd9c1b5664a 477 return;
AndyA 22:0dd9c1b5664a 478 }
AndyA 22:0dd9c1b5664a 479
AndyA 22:0dd9c1b5664a 480 /*
AndyA 22:0dd9c1b5664a 481 * Parse message.
AndyA 22:0dd9c1b5664a 482 */
AndyA 22:0dd9c1b5664a 483 if (len < (int)sizeof (u_char)) {
AndyA 22:0dd9c1b5664a 484 UPAPDEBUG(LOG_INFO, ("pap_rauthack: ignoring missing msg-length.\n"));
AndyA 22:0dd9c1b5664a 485 } else {
AndyA 22:0dd9c1b5664a 486 GETCHAR(msglen, inp);
AndyA 22:0dd9c1b5664a 487 if (msglen > 0) {
AndyA 22:0dd9c1b5664a 488 len -= sizeof (u_char);
AndyA 22:0dd9c1b5664a 489 if (len < msglen) {
AndyA 22:0dd9c1b5664a 490 UPAPDEBUG(LOG_INFO, ("pap_rauthack: rcvd short packet.\n"));
AndyA 22:0dd9c1b5664a 491 return;
AndyA 22:0dd9c1b5664a 492 }
AndyA 22:0dd9c1b5664a 493 msg = (char *) inp;
AndyA 22:0dd9c1b5664a 494 PRINTMSG(msg, msglen);
AndyA 22:0dd9c1b5664a 495 }
AndyA 22:0dd9c1b5664a 496 }
AndyA 22:0dd9c1b5664a 497 UNTIMEOUT(upap_timeout, u); /* Cancel timeout */
AndyA 22:0dd9c1b5664a 498 u->us_clientstate = UPAPCS_OPEN;
AndyA 22:0dd9c1b5664a 499
AndyA 22:0dd9c1b5664a 500 auth_withpeer_success(u->us_unit, PPP_PAP);
AndyA 22:0dd9c1b5664a 501 }
AndyA 22:0dd9c1b5664a 502
AndyA 22:0dd9c1b5664a 503
AndyA 22:0dd9c1b5664a 504 /*
AndyA 22:0dd9c1b5664a 505 * upap_rauthnak - Receive Authenticate-Nak.
AndyA 22:0dd9c1b5664a 506 */
AndyA 22:0dd9c1b5664a 507 static void
AndyA 22:0dd9c1b5664a 508 upap_rauthnak(upap_state *u, u_char *inp, int id, int len)
AndyA 22:0dd9c1b5664a 509 {
AndyA 22:0dd9c1b5664a 510 u_char msglen;
AndyA 22:0dd9c1b5664a 511 char *msg;
AndyA 22:0dd9c1b5664a 512
AndyA 22:0dd9c1b5664a 513 LWIP_UNUSED_ARG(id);
AndyA 22:0dd9c1b5664a 514
AndyA 22:0dd9c1b5664a 515 UPAPDEBUG(LOG_INFO, ("pap_rauthnak: Rcvd id %d s=%d\n", id, u->us_clientstate));
AndyA 22:0dd9c1b5664a 516
AndyA 22:0dd9c1b5664a 517 if (u->us_clientstate != UPAPCS_AUTHREQ) { /* XXX */
AndyA 22:0dd9c1b5664a 518 return;
AndyA 22:0dd9c1b5664a 519 }
AndyA 22:0dd9c1b5664a 520
AndyA 22:0dd9c1b5664a 521 /*
AndyA 22:0dd9c1b5664a 522 * Parse message.
AndyA 22:0dd9c1b5664a 523 */
AndyA 22:0dd9c1b5664a 524 if (len < sizeof (u_char)) {
AndyA 22:0dd9c1b5664a 525 UPAPDEBUG(LOG_INFO, ("pap_rauthnak: ignoring missing msg-length.\n"));
AndyA 22:0dd9c1b5664a 526 } else {
AndyA 22:0dd9c1b5664a 527 GETCHAR(msglen, inp);
AndyA 22:0dd9c1b5664a 528 if(msglen > 0) {
AndyA 22:0dd9c1b5664a 529 len -= sizeof (u_char);
AndyA 22:0dd9c1b5664a 530 if (len < msglen) {
AndyA 22:0dd9c1b5664a 531 UPAPDEBUG(LOG_INFO, ("pap_rauthnak: rcvd short packet.\n"));
AndyA 22:0dd9c1b5664a 532 return;
AndyA 22:0dd9c1b5664a 533 }
AndyA 22:0dd9c1b5664a 534 msg = (char *) inp;
AndyA 22:0dd9c1b5664a 535 PRINTMSG(msg, msglen);
AndyA 22:0dd9c1b5664a 536 }
AndyA 22:0dd9c1b5664a 537 }
AndyA 22:0dd9c1b5664a 538
AndyA 22:0dd9c1b5664a 539 u->us_clientstate = UPAPCS_BADAUTH;
AndyA 22:0dd9c1b5664a 540
AndyA 22:0dd9c1b5664a 541 UPAPDEBUG(LOG_ERR, ("PAP authentication failed\n"));
AndyA 22:0dd9c1b5664a 542 auth_withpeer_fail(u->us_unit, PPP_PAP);
AndyA 22:0dd9c1b5664a 543 }
AndyA 22:0dd9c1b5664a 544
AndyA 22:0dd9c1b5664a 545
AndyA 22:0dd9c1b5664a 546 /*
AndyA 22:0dd9c1b5664a 547 * upap_sauthreq - Send an Authenticate-Request.
AndyA 22:0dd9c1b5664a 548 */
AndyA 22:0dd9c1b5664a 549 static void
AndyA 22:0dd9c1b5664a 550 upap_sauthreq(upap_state *u)
AndyA 22:0dd9c1b5664a 551 {
AndyA 22:0dd9c1b5664a 552 u_char *outp;
AndyA 22:0dd9c1b5664a 553 int outlen;
AndyA 22:0dd9c1b5664a 554
AndyA 22:0dd9c1b5664a 555 outlen = UPAP_HEADERLEN + 2 * sizeof (u_char)
AndyA 22:0dd9c1b5664a 556 + u->us_userlen + u->us_passwdlen;
AndyA 22:0dd9c1b5664a 557 outp = outpacket_buf[u->us_unit];
AndyA 22:0dd9c1b5664a 558
AndyA 22:0dd9c1b5664a 559 MAKEHEADER(outp, PPP_PAP);
AndyA 22:0dd9c1b5664a 560
AndyA 22:0dd9c1b5664a 561 PUTCHAR(UPAP_AUTHREQ, outp);
AndyA 22:0dd9c1b5664a 562 PUTCHAR(++u->us_id, outp);
AndyA 22:0dd9c1b5664a 563 PUTSHORT(outlen, outp);
AndyA 22:0dd9c1b5664a 564 PUTCHAR(u->us_userlen, outp);
AndyA 22:0dd9c1b5664a 565 BCOPY(u->us_user, outp, u->us_userlen);
AndyA 22:0dd9c1b5664a 566 INCPTR(u->us_userlen, outp);
AndyA 22:0dd9c1b5664a 567 PUTCHAR(u->us_passwdlen, outp);
AndyA 22:0dd9c1b5664a 568 BCOPY(u->us_passwd, outp, u->us_passwdlen);
AndyA 22:0dd9c1b5664a 569
AndyA 22:0dd9c1b5664a 570 pppWrite(u->us_unit, outpacket_buf[u->us_unit], outlen + PPP_HDRLEN);
AndyA 22:0dd9c1b5664a 571
AndyA 22:0dd9c1b5664a 572 UPAPDEBUG(LOG_INFO, ("pap_sauth: Sent id %d\n", u->us_id));
AndyA 22:0dd9c1b5664a 573
AndyA 22:0dd9c1b5664a 574 TIMEOUT(upap_timeout, u, u->us_timeouttime);
AndyA 22:0dd9c1b5664a 575 ++u->us_transmits;
AndyA 22:0dd9c1b5664a 576 u->us_clientstate = UPAPCS_AUTHREQ;
AndyA 22:0dd9c1b5664a 577 }
AndyA 22:0dd9c1b5664a 578
AndyA 22:0dd9c1b5664a 579
AndyA 22:0dd9c1b5664a 580 /*
AndyA 22:0dd9c1b5664a 581 * upap_sresp - Send a response (ack or nak).
AndyA 22:0dd9c1b5664a 582 */
AndyA 22:0dd9c1b5664a 583 static void
AndyA 22:0dd9c1b5664a 584 upap_sresp(upap_state *u, u_char code, u_char id, char *msg, int msglen)
AndyA 22:0dd9c1b5664a 585 {
AndyA 22:0dd9c1b5664a 586 u_char *outp;
AndyA 22:0dd9c1b5664a 587 int outlen;
AndyA 22:0dd9c1b5664a 588
AndyA 22:0dd9c1b5664a 589 outlen = UPAP_HEADERLEN + sizeof (u_char) + msglen;
AndyA 22:0dd9c1b5664a 590 outp = outpacket_buf[u->us_unit];
AndyA 22:0dd9c1b5664a 591 MAKEHEADER(outp, PPP_PAP);
AndyA 22:0dd9c1b5664a 592
AndyA 22:0dd9c1b5664a 593 PUTCHAR(code, outp);
AndyA 22:0dd9c1b5664a 594 PUTCHAR(id, outp);
AndyA 22:0dd9c1b5664a 595 PUTSHORT(outlen, outp);
AndyA 22:0dd9c1b5664a 596 PUTCHAR(msglen, outp);
AndyA 22:0dd9c1b5664a 597 BCOPY(msg, outp, msglen);
AndyA 22:0dd9c1b5664a 598 pppWrite(u->us_unit, outpacket_buf[u->us_unit], outlen + PPP_HDRLEN);
AndyA 22:0dd9c1b5664a 599
AndyA 22:0dd9c1b5664a 600 UPAPDEBUG(LOG_INFO, ("pap_sresp: Sent code %d, id %d s=%d\n", code, id, u->us_clientstate));
AndyA 22:0dd9c1b5664a 601 }
AndyA 22:0dd9c1b5664a 602
AndyA 22:0dd9c1b5664a 603 #if PPP_ADDITIONAL_CALLBACKS
AndyA 22:0dd9c1b5664a 604 static char *upap_codenames[] = {
AndyA 22:0dd9c1b5664a 605 "AuthReq", "AuthAck", "AuthNak"
AndyA 22:0dd9c1b5664a 606 };
AndyA 22:0dd9c1b5664a 607
AndyA 22:0dd9c1b5664a 608 /*
AndyA 22:0dd9c1b5664a 609 * upap_printpkt - print the contents of a PAP packet.
AndyA 22:0dd9c1b5664a 610 */
AndyA 22:0dd9c1b5664a 611 static int upap_printpkt(
AndyA 22:0dd9c1b5664a 612 u_char *p,
AndyA 22:0dd9c1b5664a 613 int plen,
AndyA 22:0dd9c1b5664a 614 void (*printer) (void *, char *, ...),
AndyA 22:0dd9c1b5664a 615 void *arg
AndyA 22:0dd9c1b5664a 616 )
AndyA 22:0dd9c1b5664a 617 {
AndyA 22:0dd9c1b5664a 618 LWIP_UNUSED_ARG(p);
AndyA 22:0dd9c1b5664a 619 LWIP_UNUSED_ARG(plen);
AndyA 22:0dd9c1b5664a 620 LWIP_UNUSED_ARG(printer);
AndyA 22:0dd9c1b5664a 621 LWIP_UNUSED_ARG(arg);
AndyA 22:0dd9c1b5664a 622 return 0;
AndyA 22:0dd9c1b5664a 623 }
AndyA 22:0dd9c1b5664a 624 #endif /* PPP_ADDITIONAL_CALLBACKS */
AndyA 22:0dd9c1b5664a 625
AndyA 22:0dd9c1b5664a 626 #endif /* PAP_SUPPORT */
AndyA 22:0dd9c1b5664a 627
AndyA 22:0dd9c1b5664a 628 #endif /* PPP_SUPPORT */