Travis Geiselbrecht | 1d0df69 | 2008-09-01 02:26:09 -0700 | [diff] [blame^] | 1 | /***************************************************************************** |
| 2 | * pap.c - Network Password Authentication Protocol program file. |
| 3 | * |
| 4 | * Copyright (c) 2003 by Marc Boucher, Services Informatiques (MBSI) inc. |
| 5 | * portions Copyright (c) 1997 by Global Election Systems Inc. |
| 6 | * |
| 7 | * The authors hereby grant permission to use, copy, modify, distribute, |
| 8 | * and license this software and its documentation for any purpose, provided |
| 9 | * that existing copyright notices are retained in all copies and that this |
| 10 | * notice and the following disclaimer are included verbatim in any |
| 11 | * distributions. No written agreement, license, or royalty fee is required |
| 12 | * for any of the authorized uses. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS *AS IS* AND ANY EXPRESS OR |
| 15 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 16 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 17 | * IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 18 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 19 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 20 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 21 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 23 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 24 | * |
| 25 | ****************************************************************************** |
| 26 | * REVISION HISTORY |
| 27 | * |
| 28 | * 03-01-01 Marc Boucher <marc@mbsi.ca> |
| 29 | * Ported to lwIP. |
| 30 | * 97-12-12 Guy Lancaster <lancasterg@acm.org>, Global Election Systems Inc. |
| 31 | * Original. |
| 32 | *****************************************************************************/ |
| 33 | /* |
| 34 | * upap.c - User/Password Authentication Protocol. |
| 35 | * |
| 36 | * Copyright (c) 1989 Carnegie Mellon University. |
| 37 | * All rights reserved. |
| 38 | * |
| 39 | * Redistribution and use in source and binary forms are permitted |
| 40 | * provided that the above copyright notice and this paragraph are |
| 41 | * duplicated in all such forms and that any documentation, |
| 42 | * advertising materials, and other materials related to such |
| 43 | * distribution and use acknowledge that the software was developed |
| 44 | * by Carnegie Mellon University. The name of the |
| 45 | * University may not be used to endorse or promote products derived |
| 46 | * from this software without specific prior written permission. |
| 47 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 48 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 49 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 50 | */ |
| 51 | |
| 52 | #include "ppp.h" |
| 53 | #include "auth.h" |
| 54 | #include "pap.h" |
| 55 | #include "pppdebug.h" |
| 56 | |
| 57 | |
| 58 | #if PAP_SUPPORT > 0 |
| 59 | |
| 60 | /***********************************/ |
| 61 | /*** LOCAL FUNCTION DECLARATIONS ***/ |
| 62 | /***********************************/ |
| 63 | /* |
| 64 | * Protocol entry points. |
| 65 | */ |
| 66 | static void upap_init (int); |
| 67 | static void upap_lowerup (int); |
| 68 | static void upap_lowerdown (int); |
| 69 | static void upap_input (int, u_char *, int); |
| 70 | static void upap_protrej (int); |
| 71 | |
| 72 | static void upap_timeout (void *); |
| 73 | static void upap_reqtimeout (void *); |
| 74 | static void upap_rauthreq (upap_state *, u_char *, int, int); |
| 75 | static void upap_rauthack (upap_state *, u_char *, int, int); |
| 76 | static void upap_rauthnak (upap_state *, u_char *, int, int); |
| 77 | static void upap_sauthreq (upap_state *); |
| 78 | static void upap_sresp (upap_state *, u_char, u_char, char *, int); |
| 79 | |
| 80 | |
| 81 | |
| 82 | |
| 83 | /******************************/ |
| 84 | /*** PUBLIC DATA STRUCTURES ***/ |
| 85 | /******************************/ |
| 86 | struct protent pap_protent = { |
| 87 | PPP_PAP, |
| 88 | upap_init, |
| 89 | upap_input, |
| 90 | upap_protrej, |
| 91 | upap_lowerup, |
| 92 | upap_lowerdown, |
| 93 | NULL, |
| 94 | NULL, |
| 95 | #if 0 |
| 96 | upap_printpkt, |
| 97 | NULL, |
| 98 | #endif |
| 99 | 1, |
| 100 | "PAP", |
| 101 | #if 0 |
| 102 | NULL, |
| 103 | NULL, |
| 104 | NULL |
| 105 | #endif |
| 106 | }; |
| 107 | |
| 108 | upap_state upap[NUM_PPP]; /* UPAP state; one for each unit */ |
| 109 | |
| 110 | |
| 111 | |
| 112 | /***********************************/ |
| 113 | /*** PUBLIC FUNCTION DEFINITIONS ***/ |
| 114 | /***********************************/ |
| 115 | /* |
| 116 | * Set the default login name and password for the pap sessions |
| 117 | */ |
| 118 | void upap_setloginpasswd(int unit, const char *luser, const char *lpassword) |
| 119 | { |
| 120 | upap_state *u = &upap[unit]; |
| 121 | |
| 122 | /* Save the username and password we're given */ |
| 123 | u->us_user = luser; |
| 124 | u->us_userlen = strlen(luser); |
| 125 | u->us_passwd = lpassword; |
| 126 | u->us_passwdlen = strlen(lpassword); |
| 127 | } |
| 128 | |
| 129 | |
| 130 | /* |
| 131 | * upap_authwithpeer - Authenticate us with our peer (start client). |
| 132 | * |
| 133 | * Set new state and send authenticate's. |
| 134 | */ |
| 135 | void upap_authwithpeer(int unit, char *user, char *password) |
| 136 | { |
| 137 | upap_state *u = &upap[unit]; |
| 138 | |
| 139 | UPAPDEBUG((LOG_INFO, "upap_authwithpeer: %d user=%s password=%s s=%d\n", |
| 140 | unit, user, password, u->us_clientstate)); |
| 141 | |
| 142 | upap_setloginpasswd(unit, user, password); |
| 143 | |
| 144 | u->us_transmits = 0; |
| 145 | |
| 146 | /* Lower layer up yet? */ |
| 147 | if (u->us_clientstate == UPAPCS_INITIAL || |
| 148 | u->us_clientstate == UPAPCS_PENDING) { |
| 149 | u->us_clientstate = UPAPCS_PENDING; |
| 150 | return; |
| 151 | } |
| 152 | |
| 153 | upap_sauthreq(u); /* Start protocol */ |
| 154 | } |
| 155 | |
| 156 | |
| 157 | /* |
| 158 | * upap_authpeer - Authenticate our peer (start server). |
| 159 | * |
| 160 | * Set new state. |
| 161 | */ |
| 162 | void upap_authpeer(int unit) |
| 163 | { |
| 164 | upap_state *u = &upap[unit]; |
| 165 | |
| 166 | /* Lower layer up yet? */ |
| 167 | if (u->us_serverstate == UPAPSS_INITIAL || |
| 168 | u->us_serverstate == UPAPSS_PENDING) { |
| 169 | u->us_serverstate = UPAPSS_PENDING; |
| 170 | return; |
| 171 | } |
| 172 | |
| 173 | u->us_serverstate = UPAPSS_LISTEN; |
| 174 | if (u->us_reqtimeout > 0) |
| 175 | TIMEOUT(upap_reqtimeout, u, u->us_reqtimeout); |
| 176 | } |
| 177 | |
| 178 | |
| 179 | |
| 180 | /**********************************/ |
| 181 | /*** LOCAL FUNCTION DEFINITIONS ***/ |
| 182 | /**********************************/ |
| 183 | /* |
| 184 | * upap_init - Initialize a UPAP unit. |
| 185 | */ |
| 186 | static void upap_init(int unit) |
| 187 | { |
| 188 | upap_state *u = &upap[unit]; |
| 189 | |
| 190 | UPAPDEBUG((LOG_INFO, "upap_init: %d\n", unit)); |
| 191 | u->us_unit = unit; |
| 192 | u->us_user = NULL; |
| 193 | u->us_userlen = 0; |
| 194 | u->us_passwd = NULL; |
| 195 | u->us_passwdlen = 0; |
| 196 | u->us_clientstate = UPAPCS_INITIAL; |
| 197 | u->us_serverstate = UPAPSS_INITIAL; |
| 198 | u->us_id = 0; |
| 199 | u->us_timeouttime = UPAP_DEFTIMEOUT; |
| 200 | u->us_maxtransmits = 10; |
| 201 | u->us_reqtimeout = UPAP_DEFREQTIME; |
| 202 | } |
| 203 | |
| 204 | /* |
| 205 | * upap_timeout - Retransmission timer for sending auth-reqs expired. |
| 206 | */ |
| 207 | static void upap_timeout(void *arg) |
| 208 | { |
| 209 | upap_state *u = (upap_state *) arg; |
| 210 | |
| 211 | UPAPDEBUG((LOG_INFO, "upap_timeout: %d timeout %d expired s=%d\n", |
| 212 | u->us_unit, u->us_timeouttime, u->us_clientstate)); |
| 213 | |
| 214 | if (u->us_clientstate != UPAPCS_AUTHREQ) |
| 215 | return; |
| 216 | |
| 217 | if (u->us_transmits >= u->us_maxtransmits) { |
| 218 | /* give up in disgust */ |
| 219 | UPAPDEBUG((LOG_ERR, "No response to PAP authenticate-requests\n")); |
| 220 | u->us_clientstate = UPAPCS_BADAUTH; |
| 221 | auth_withpeer_fail(u->us_unit, PPP_PAP); |
| 222 | return; |
| 223 | } |
| 224 | |
| 225 | upap_sauthreq(u); /* Send Authenticate-Request */ |
| 226 | } |
| 227 | |
| 228 | |
| 229 | /* |
| 230 | * upap_reqtimeout - Give up waiting for the peer to send an auth-req. |
| 231 | */ |
| 232 | static void upap_reqtimeout(void *arg) |
| 233 | { |
| 234 | upap_state *u = (upap_state *) arg; |
| 235 | |
| 236 | if (u->us_serverstate != UPAPSS_LISTEN) |
| 237 | return; /* huh?? */ |
| 238 | |
| 239 | auth_peer_fail(u->us_unit, PPP_PAP); |
| 240 | u->us_serverstate = UPAPSS_BADAUTH; |
| 241 | } |
| 242 | |
| 243 | |
| 244 | /* |
| 245 | * upap_lowerup - The lower layer is up. |
| 246 | * |
| 247 | * Start authenticating if pending. |
| 248 | */ |
| 249 | static void upap_lowerup(int unit) |
| 250 | { |
| 251 | upap_state *u = &upap[unit]; |
| 252 | |
| 253 | UPAPDEBUG((LOG_INFO, "upap_lowerup: %d s=%d\n", unit, u->us_clientstate)); |
| 254 | |
| 255 | if (u->us_clientstate == UPAPCS_INITIAL) |
| 256 | u->us_clientstate = UPAPCS_CLOSED; |
| 257 | else if (u->us_clientstate == UPAPCS_PENDING) { |
| 258 | upap_sauthreq(u); /* send an auth-request */ |
| 259 | } |
| 260 | |
| 261 | if (u->us_serverstate == UPAPSS_INITIAL) |
| 262 | u->us_serverstate = UPAPSS_CLOSED; |
| 263 | else if (u->us_serverstate == UPAPSS_PENDING) { |
| 264 | u->us_serverstate = UPAPSS_LISTEN; |
| 265 | if (u->us_reqtimeout > 0) |
| 266 | TIMEOUT(upap_reqtimeout, u, u->us_reqtimeout); |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | |
| 271 | /* |
| 272 | * upap_lowerdown - The lower layer is down. |
| 273 | * |
| 274 | * Cancel all timeouts. |
| 275 | */ |
| 276 | static void upap_lowerdown(int unit) |
| 277 | { |
| 278 | upap_state *u = &upap[unit]; |
| 279 | |
| 280 | UPAPDEBUG((LOG_INFO, "upap_lowerdown: %d s=%d\n", unit, u->us_clientstate)); |
| 281 | |
| 282 | if (u->us_clientstate == UPAPCS_AUTHREQ) /* Timeout pending? */ |
| 283 | UNTIMEOUT(upap_timeout, u); /* Cancel timeout */ |
| 284 | if (u->us_serverstate == UPAPSS_LISTEN && u->us_reqtimeout > 0) |
| 285 | UNTIMEOUT(upap_reqtimeout, u); |
| 286 | |
| 287 | u->us_clientstate = UPAPCS_INITIAL; |
| 288 | u->us_serverstate = UPAPSS_INITIAL; |
| 289 | } |
| 290 | |
| 291 | |
| 292 | /* |
| 293 | * upap_protrej - Peer doesn't speak this protocol. |
| 294 | * |
| 295 | * This shouldn't happen. In any case, pretend lower layer went down. |
| 296 | */ |
| 297 | static void upap_protrej(int unit) |
| 298 | { |
| 299 | upap_state *u = &upap[unit]; |
| 300 | |
| 301 | if (u->us_clientstate == UPAPCS_AUTHREQ) { |
| 302 | UPAPDEBUG((LOG_ERR, "PAP authentication failed due to protocol-reject\n")); |
| 303 | auth_withpeer_fail(unit, PPP_PAP); |
| 304 | } |
| 305 | if (u->us_serverstate == UPAPSS_LISTEN) { |
| 306 | UPAPDEBUG((LOG_ERR, "PAP authentication of peer failed (protocol-reject)\n")); |
| 307 | auth_peer_fail(unit, PPP_PAP); |
| 308 | } |
| 309 | upap_lowerdown(unit); |
| 310 | } |
| 311 | |
| 312 | |
| 313 | /* |
| 314 | * upap_input - Input UPAP packet. |
| 315 | */ |
| 316 | static void upap_input(int unit, u_char *inpacket, int l) |
| 317 | { |
| 318 | upap_state *u = &upap[unit]; |
| 319 | u_char *inp; |
| 320 | u_char code, id; |
| 321 | int len; |
| 322 | |
| 323 | /* |
| 324 | * Parse header (code, id and length). |
| 325 | * If packet too short, drop it. |
| 326 | */ |
| 327 | inp = inpacket; |
| 328 | if (l < UPAP_HEADERLEN) { |
| 329 | UPAPDEBUG((LOG_INFO, "pap_input: rcvd short header.\n")); |
| 330 | return; |
| 331 | } |
| 332 | GETCHAR(code, inp); |
| 333 | GETCHAR(id, inp); |
| 334 | GETSHORT(len, inp); |
| 335 | if (len < UPAP_HEADERLEN) { |
| 336 | UPAPDEBUG((LOG_INFO, "pap_input: rcvd illegal length.\n")); |
| 337 | return; |
| 338 | } |
| 339 | if (len > l) { |
| 340 | UPAPDEBUG((LOG_INFO, "pap_input: rcvd short packet.\n")); |
| 341 | return; |
| 342 | } |
| 343 | len -= UPAP_HEADERLEN; |
| 344 | |
| 345 | /* |
| 346 | * Action depends on code. |
| 347 | */ |
| 348 | switch (code) { |
| 349 | case UPAP_AUTHREQ: |
| 350 | upap_rauthreq(u, inp, id, len); |
| 351 | break; |
| 352 | |
| 353 | case UPAP_AUTHACK: |
| 354 | upap_rauthack(u, inp, id, len); |
| 355 | break; |
| 356 | |
| 357 | case UPAP_AUTHNAK: |
| 358 | upap_rauthnak(u, inp, id, len); |
| 359 | break; |
| 360 | |
| 361 | default: /* XXX Need code reject */ |
| 362 | break; |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | |
| 367 | /* |
| 368 | * upap_rauth - Receive Authenticate. |
| 369 | */ |
| 370 | static void upap_rauthreq( |
| 371 | upap_state *u, |
| 372 | u_char *inp, |
| 373 | int id, |
| 374 | int len |
| 375 | ) |
| 376 | { |
| 377 | u_char ruserlen, rpasswdlen; |
| 378 | char *ruser, *rpasswd; |
| 379 | int retcode; |
| 380 | char *msg; |
| 381 | int msglen; |
| 382 | |
| 383 | UPAPDEBUG((LOG_INFO, "pap_rauth: Rcvd id %d.\n", id)); |
| 384 | |
| 385 | if (u->us_serverstate < UPAPSS_LISTEN) |
| 386 | return; |
| 387 | |
| 388 | /* |
| 389 | * If we receive a duplicate authenticate-request, we are |
| 390 | * supposed to return the same status as for the first request. |
| 391 | */ |
| 392 | if (u->us_serverstate == UPAPSS_OPEN) { |
| 393 | upap_sresp(u, UPAP_AUTHACK, id, "", 0); /* return auth-ack */ |
| 394 | return; |
| 395 | } |
| 396 | if (u->us_serverstate == UPAPSS_BADAUTH) { |
| 397 | upap_sresp(u, UPAP_AUTHNAK, id, "", 0); /* return auth-nak */ |
| 398 | return; |
| 399 | } |
| 400 | |
| 401 | /* |
| 402 | * Parse user/passwd. |
| 403 | */ |
| 404 | if (len < sizeof (u_char)) { |
| 405 | UPAPDEBUG((LOG_INFO, "pap_rauth: rcvd short packet.\n")); |
| 406 | return; |
| 407 | } |
| 408 | GETCHAR(ruserlen, inp); |
| 409 | len -= sizeof (u_char) + ruserlen + sizeof (u_char); |
| 410 | if (len < 0) { |
| 411 | UPAPDEBUG((LOG_INFO, "pap_rauth: rcvd short packet.\n")); |
| 412 | return; |
| 413 | } |
| 414 | ruser = (char *) inp; |
| 415 | INCPTR(ruserlen, inp); |
| 416 | GETCHAR(rpasswdlen, inp); |
| 417 | if (len < rpasswdlen) { |
| 418 | UPAPDEBUG((LOG_INFO, "pap_rauth: rcvd short packet.\n")); |
| 419 | return; |
| 420 | } |
| 421 | rpasswd = (char *) inp; |
| 422 | |
| 423 | /* |
| 424 | * Check the username and password given. |
| 425 | */ |
| 426 | retcode = check_passwd(u->us_unit, ruser, ruserlen, rpasswd, |
| 427 | rpasswdlen, &msg, &msglen); |
| 428 | BZERO(rpasswd, rpasswdlen); |
| 429 | |
| 430 | upap_sresp(u, retcode, id, msg, msglen); |
| 431 | |
| 432 | if (retcode == UPAP_AUTHACK) { |
| 433 | u->us_serverstate = UPAPSS_OPEN; |
| 434 | auth_peer_success(u->us_unit, PPP_PAP, ruser, ruserlen); |
| 435 | } else { |
| 436 | u->us_serverstate = UPAPSS_BADAUTH; |
| 437 | auth_peer_fail(u->us_unit, PPP_PAP); |
| 438 | } |
| 439 | |
| 440 | if (u->us_reqtimeout > 0) |
| 441 | UNTIMEOUT(upap_reqtimeout, u); |
| 442 | } |
| 443 | |
| 444 | |
| 445 | /* |
| 446 | * upap_rauthack - Receive Authenticate-Ack. |
| 447 | */ |
| 448 | static void upap_rauthack( |
| 449 | upap_state *u, |
| 450 | u_char *inp, |
| 451 | int id, |
| 452 | int len |
| 453 | ) |
| 454 | { |
| 455 | u_char msglen; |
| 456 | char *msg; |
| 457 | |
| 458 | UPAPDEBUG((LOG_INFO, "pap_rauthack: Rcvd id %d s=%d\n", id, u->us_clientstate)); |
| 459 | |
| 460 | if (u->us_clientstate != UPAPCS_AUTHREQ) /* XXX */ |
| 461 | return; |
| 462 | |
| 463 | /* |
| 464 | * Parse message. |
| 465 | */ |
| 466 | if (len < sizeof (u_char)) { |
| 467 | UPAPDEBUG((LOG_INFO, "pap_rauthack: rcvd short packet.\n")); |
| 468 | return; |
| 469 | } |
| 470 | GETCHAR(msglen, inp); |
| 471 | len -= sizeof (u_char); |
| 472 | if (len < msglen) { |
| 473 | UPAPDEBUG((LOG_INFO, "pap_rauthack: rcvd short packet.\n")); |
| 474 | return; |
| 475 | } |
| 476 | msg = (char *) inp; |
| 477 | PRINTMSG(msg, msglen); |
| 478 | |
| 479 | u->us_clientstate = UPAPCS_OPEN; |
| 480 | |
| 481 | auth_withpeer_success(u->us_unit, PPP_PAP); |
| 482 | } |
| 483 | |
| 484 | |
| 485 | /* |
| 486 | * upap_rauthnak - Receive Authenticate-Nakk. |
| 487 | */ |
| 488 | static void upap_rauthnak( |
| 489 | upap_state *u, |
| 490 | u_char *inp, |
| 491 | int id, |
| 492 | int len |
| 493 | ) |
| 494 | { |
| 495 | u_char msglen; |
| 496 | char *msg; |
| 497 | |
| 498 | UPAPDEBUG((LOG_INFO, "pap_rauthnak: Rcvd id %d s=%d\n", id, u->us_clientstate)); |
| 499 | |
| 500 | if (u->us_clientstate != UPAPCS_AUTHREQ) /* XXX */ |
| 501 | return; |
| 502 | |
| 503 | /* |
| 504 | * Parse message. |
| 505 | */ |
| 506 | if (len < sizeof (u_char)) { |
| 507 | UPAPDEBUG((LOG_INFO, "pap_rauthnak: rcvd short packet.\n")); |
| 508 | return; |
| 509 | } |
| 510 | GETCHAR(msglen, inp); |
| 511 | len -= sizeof (u_char); |
| 512 | if (len < msglen) { |
| 513 | UPAPDEBUG((LOG_INFO, "pap_rauthnak: rcvd short packet.\n")); |
| 514 | return; |
| 515 | } |
| 516 | msg = (char *) inp; |
| 517 | PRINTMSG(msg, msglen); |
| 518 | |
| 519 | u->us_clientstate = UPAPCS_BADAUTH; |
| 520 | |
| 521 | UPAPDEBUG((LOG_ERR, "PAP authentication failed\n")); |
| 522 | auth_withpeer_fail(u->us_unit, PPP_PAP); |
| 523 | } |
| 524 | |
| 525 | |
| 526 | /* |
| 527 | * upap_sauthreq - Send an Authenticate-Request. |
| 528 | */ |
| 529 | static void upap_sauthreq(upap_state *u) |
| 530 | { |
| 531 | u_char *outp; |
| 532 | int outlen; |
| 533 | |
| 534 | outlen = UPAP_HEADERLEN + 2 * sizeof (u_char) |
| 535 | + u->us_userlen + u->us_passwdlen; |
| 536 | outp = outpacket_buf[u->us_unit]; |
| 537 | |
| 538 | MAKEHEADER(outp, PPP_PAP); |
| 539 | |
| 540 | PUTCHAR(UPAP_AUTHREQ, outp); |
| 541 | PUTCHAR(++u->us_id, outp); |
| 542 | PUTSHORT(outlen, outp); |
| 543 | PUTCHAR(u->us_userlen, outp); |
| 544 | BCOPY(u->us_user, outp, u->us_userlen); |
| 545 | INCPTR(u->us_userlen, outp); |
| 546 | PUTCHAR(u->us_passwdlen, outp); |
| 547 | BCOPY(u->us_passwd, outp, u->us_passwdlen); |
| 548 | |
| 549 | pppWrite(u->us_unit, outpacket_buf[u->us_unit], outlen + PPP_HDRLEN); |
| 550 | |
| 551 | UPAPDEBUG((LOG_INFO, "pap_sauth: Sent id %d\n", u->us_id)); |
| 552 | |
| 553 | TIMEOUT(upap_timeout, u, u->us_timeouttime); |
| 554 | ++u->us_transmits; |
| 555 | u->us_clientstate = UPAPCS_AUTHREQ; |
| 556 | } |
| 557 | |
| 558 | |
| 559 | /* |
| 560 | * upap_sresp - Send a response (ack or nak). |
| 561 | */ |
| 562 | static void upap_sresp( |
| 563 | upap_state *u, |
| 564 | u_char code, |
| 565 | u_char id, |
| 566 | char *msg, |
| 567 | int msglen |
| 568 | ) |
| 569 | { |
| 570 | u_char *outp; |
| 571 | int outlen; |
| 572 | |
| 573 | outlen = UPAP_HEADERLEN + sizeof (u_char) + msglen; |
| 574 | outp = outpacket_buf[u->us_unit]; |
| 575 | MAKEHEADER(outp, PPP_PAP); |
| 576 | |
| 577 | PUTCHAR(code, outp); |
| 578 | PUTCHAR(id, outp); |
| 579 | PUTSHORT(outlen, outp); |
| 580 | PUTCHAR(msglen, outp); |
| 581 | BCOPY(msg, outp, msglen); |
| 582 | pppWrite(u->us_unit, outpacket_buf[u->us_unit], outlen + PPP_HDRLEN); |
| 583 | |
| 584 | UPAPDEBUG((LOG_INFO, "pap_sresp: Sent code %d, id %d s=%d\n", |
| 585 | code, id, u->us_clientstate)); |
| 586 | } |
| 587 | |
| 588 | #if 0 |
| 589 | /* |
| 590 | * upap_printpkt - print the contents of a PAP packet. |
| 591 | */ |
| 592 | static int upap_printpkt( |
| 593 | u_char *p, |
| 594 | int plen, |
| 595 | void (*printer) (void *, char *, ...), |
| 596 | void *arg |
| 597 | ) |
| 598 | { |
| 599 | (void)p; |
| 600 | (void)plen; |
| 601 | (void)printer; |
| 602 | (void)arg; |
| 603 | return 0; |
| 604 | } |
| 605 | #endif |
| 606 | |
| 607 | #endif /* PAP_SUPPORT */ |
| 608 | |