cbcp.c revision 1.2.8.2
1 1.2.8.2 tls /* $NetBSD: cbcp.c,v 1.2.8.2 2014/08/19 23:52:11 tls Exp $ */ 2 1.2.8.2 tls 3 1.2.8.2 tls /* 4 1.2.8.2 tls * cbcp - Call Back Configuration Protocol. 5 1.2.8.2 tls * 6 1.2.8.2 tls * Copyright (c) 1995 Pedro Roque Marques. All rights reserved. 7 1.2.8.2 tls * 8 1.2.8.2 tls * Redistribution and use in source and binary forms, with or without 9 1.2.8.2 tls * modification, are permitted provided that the following conditions 10 1.2.8.2 tls * are met: 11 1.2.8.2 tls * 12 1.2.8.2 tls * 1. Redistributions of source code must retain the above copyright 13 1.2.8.2 tls * notice, this list of conditions and the following disclaimer. 14 1.2.8.2 tls * 15 1.2.8.2 tls * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.8.2 tls * notice, this list of conditions and the following disclaimer in 17 1.2.8.2 tls * the documentation and/or other materials provided with the 18 1.2.8.2 tls * distribution. 19 1.2.8.2 tls * 20 1.2.8.2 tls * 3. The names of the authors of this software must not be used to 21 1.2.8.2 tls * endorse or promote products derived from this software without 22 1.2.8.2 tls * prior written permission. 23 1.2.8.2 tls * 24 1.2.8.2 tls * 4. Redistributions of any form whatsoever must retain the following 25 1.2.8.2 tls * acknowledgment: 26 1.2.8.2 tls * "This product includes software developed by Pedro Roque Marques 27 1.2.8.2 tls * <pedro_m (at) yahoo.com>" 28 1.2.8.2 tls * 29 1.2.8.2 tls * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO 30 1.2.8.2 tls * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 31 1.2.8.2 tls * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY 32 1.2.8.2 tls * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 33 1.2.8.2 tls * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 34 1.2.8.2 tls * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 35 1.2.8.2 tls * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 36 1.2.8.2 tls */ 37 1.2.8.2 tls 38 1.2.8.2 tls #include <sys/cdefs.h> 39 1.2.8.2 tls #if 0 40 1.2.8.2 tls #define RCSID "Id: cbcp.c,v 1.17 2006/05/22 00:04:07 paulus Exp " 41 1.2.8.2 tls static const char rcsid[] = RCSID; 42 1.2.8.2 tls #else 43 1.2.8.2 tls __RCSID("$NetBSD: cbcp.c,v 1.2.8.2 2014/08/19 23:52:11 tls Exp $"); 44 1.2.8.2 tls #endif 45 1.2.8.2 tls 46 1.2.8.2 tls #include <stdio.h> 47 1.2.8.2 tls #include <string.h> 48 1.2.8.2 tls #include <sys/types.h> 49 1.2.8.2 tls #include <sys/time.h> 50 1.2.8.2 tls 51 1.2.8.2 tls #include "pppd.h" 52 1.2.8.2 tls #include "cbcp.h" 53 1.2.8.2 tls #include "fsm.h" 54 1.2.8.2 tls #include "lcp.h" 55 1.2.8.2 tls 56 1.2.8.2 tls /* 57 1.2.8.2 tls * Options. 58 1.2.8.2 tls */ 59 1.2.8.2 tls static int setcbcp __P((char **)); 60 1.2.8.2 tls 61 1.2.8.2 tls static option_t cbcp_option_list[] = { 62 1.2.8.2 tls { "callback", o_special, (void *)setcbcp, 63 1.2.8.2 tls "Ask for callback", OPT_PRIO | OPT_A2STRVAL, &cbcp[0].us_number }, 64 1.2.8.2 tls { NULL } 65 1.2.8.2 tls }; 66 1.2.8.2 tls 67 1.2.8.2 tls /* 68 1.2.8.2 tls * Protocol entry points. 69 1.2.8.2 tls */ 70 1.2.8.2 tls static void cbcp_init __P((int unit)); 71 1.2.8.2 tls static void cbcp_open __P((int unit)); 72 1.2.8.2 tls static void cbcp_lowerup __P((int unit)); 73 1.2.8.2 tls static void cbcp_input __P((int unit, u_char *pkt, int len)); 74 1.2.8.2 tls static void cbcp_protrej __P((int unit)); 75 1.2.8.2 tls static int cbcp_printpkt __P((u_char *pkt, int len, 76 1.2.8.2 tls void (*printer) __P((void *, char *, ...)), 77 1.2.8.2 tls void *arg)); 78 1.2.8.2 tls 79 1.2.8.2 tls struct protent cbcp_protent = { 80 1.2.8.2 tls PPP_CBCP, 81 1.2.8.2 tls cbcp_init, 82 1.2.8.2 tls cbcp_input, 83 1.2.8.2 tls cbcp_protrej, 84 1.2.8.2 tls cbcp_lowerup, 85 1.2.8.2 tls NULL, 86 1.2.8.2 tls cbcp_open, 87 1.2.8.2 tls NULL, 88 1.2.8.2 tls cbcp_printpkt, 89 1.2.8.2 tls NULL, 90 1.2.8.2 tls 0, 91 1.2.8.2 tls "CBCP", 92 1.2.8.2 tls NULL, 93 1.2.8.2 tls cbcp_option_list, 94 1.2.8.2 tls NULL, 95 1.2.8.2 tls NULL, 96 1.2.8.2 tls NULL 97 1.2.8.2 tls }; 98 1.2.8.2 tls 99 1.2.8.2 tls cbcp_state cbcp[NUM_PPP]; 100 1.2.8.2 tls 101 1.2.8.2 tls /* internal prototypes */ 102 1.2.8.2 tls 103 1.2.8.2 tls static void cbcp_recvreq __P((cbcp_state *us, u_char *pckt, int len)); 104 1.2.8.2 tls static void cbcp_resp __P((cbcp_state *us)); 105 1.2.8.2 tls static void cbcp_up __P((cbcp_state *us)); 106 1.2.8.2 tls static void cbcp_recvack __P((cbcp_state *us, u_char *pckt, int len)); 107 1.2.8.2 tls static void cbcp_send __P((cbcp_state *us, int code, u_char *buf, int len)); 108 1.2.8.2 tls 109 1.2.8.2 tls /* option processing */ 110 1.2.8.2 tls static int 111 1.2.8.2 tls setcbcp(argv) 112 1.2.8.2 tls char **argv; 113 1.2.8.2 tls { 114 1.2.8.2 tls lcp_wantoptions[0].neg_cbcp = 1; 115 1.2.8.2 tls cbcp_protent.enabled_flag = 1; 116 1.2.8.2 tls cbcp[0].us_number = strdup(*argv); 117 1.2.8.2 tls if (cbcp[0].us_number == 0) 118 1.2.8.2 tls novm("callback number"); 119 1.2.8.2 tls cbcp[0].us_type |= (1 << CB_CONF_USER); 120 1.2.8.2 tls cbcp[0].us_type |= (1 << CB_CONF_ADMIN); 121 1.2.8.2 tls return (1); 122 1.2.8.2 tls } 123 1.2.8.2 tls 124 1.2.8.2 tls /* init state */ 125 1.2.8.2 tls static void 126 1.2.8.2 tls cbcp_init(iface) 127 1.2.8.2 tls int iface; 128 1.2.8.2 tls { 129 1.2.8.2 tls cbcp_state *us; 130 1.2.8.2 tls 131 1.2.8.2 tls us = &cbcp[iface]; 132 1.2.8.2 tls memset(us, 0, sizeof(cbcp_state)); 133 1.2.8.2 tls us->us_unit = iface; 134 1.2.8.2 tls us->us_type |= (1 << CB_CONF_NO); 135 1.2.8.2 tls } 136 1.2.8.2 tls 137 1.2.8.2 tls /* lower layer is up */ 138 1.2.8.2 tls static void 139 1.2.8.2 tls cbcp_lowerup(iface) 140 1.2.8.2 tls int iface; 141 1.2.8.2 tls { 142 1.2.8.2 tls cbcp_state *us = &cbcp[iface]; 143 1.2.8.2 tls 144 1.2.8.2 tls dbglog("cbcp_lowerup"); 145 1.2.8.2 tls dbglog("want: %d", us->us_type); 146 1.2.8.2 tls 147 1.2.8.2 tls if (us->us_type == CB_CONF_USER) 148 1.2.8.2 tls dbglog("phone no: %s", us->us_number); 149 1.2.8.2 tls } 150 1.2.8.2 tls 151 1.2.8.2 tls static void 152 1.2.8.2 tls cbcp_open(unit) 153 1.2.8.2 tls int unit; 154 1.2.8.2 tls { 155 1.2.8.2 tls dbglog("cbcp_open"); 156 1.2.8.2 tls } 157 1.2.8.2 tls 158 1.2.8.2 tls /* process an incomming packet */ 159 1.2.8.2 tls static void 160 1.2.8.2 tls cbcp_input(unit, inpacket, pktlen) 161 1.2.8.2 tls int unit; 162 1.2.8.2 tls u_char *inpacket; 163 1.2.8.2 tls int pktlen; 164 1.2.8.2 tls { 165 1.2.8.2 tls u_char *inp; 166 1.2.8.2 tls u_char code, id; 167 1.2.8.2 tls u_short len; 168 1.2.8.2 tls 169 1.2.8.2 tls cbcp_state *us = &cbcp[unit]; 170 1.2.8.2 tls 171 1.2.8.2 tls inp = inpacket; 172 1.2.8.2 tls 173 1.2.8.2 tls if (pktlen < CBCP_MINLEN) { 174 1.2.8.2 tls if (debug) 175 1.2.8.2 tls dbglog("CBCP: Packet too short (%d)", pktlen); 176 1.2.8.2 tls return; 177 1.2.8.2 tls } 178 1.2.8.2 tls 179 1.2.8.2 tls GETCHAR(code, inp); 180 1.2.8.2 tls GETCHAR(id, inp); 181 1.2.8.2 tls GETSHORT(len, inp); 182 1.2.8.2 tls 183 1.2.8.2 tls if (len > pktlen || len < CBCP_MINLEN) { 184 1.2.8.2 tls if (debug) 185 1.2.8.2 tls dbglog("CBCP: Invalid packet length (%d/%d)", len, pktlen); 186 1.2.8.2 tls return; 187 1.2.8.2 tls } 188 1.2.8.2 tls 189 1.2.8.2 tls len -= CBCP_MINLEN; 190 1.2.8.2 tls 191 1.2.8.2 tls switch(code) { 192 1.2.8.2 tls case CBCP_REQ: 193 1.2.8.2 tls us->us_id = id; 194 1.2.8.2 tls cbcp_recvreq(us, inp, len); 195 1.2.8.2 tls break; 196 1.2.8.2 tls 197 1.2.8.2 tls case CBCP_RESP: 198 1.2.8.2 tls if (debug) 199 1.2.8.2 tls dbglog("CBCP_RESP received"); 200 1.2.8.2 tls break; 201 1.2.8.2 tls 202 1.2.8.2 tls case CBCP_ACK: 203 1.2.8.2 tls if (debug && id != us->us_id) 204 1.2.8.2 tls dbglog("id doesn't match: expected %d recv %d", 205 1.2.8.2 tls us->us_id, id); 206 1.2.8.2 tls 207 1.2.8.2 tls cbcp_recvack(us, inp, len); 208 1.2.8.2 tls break; 209 1.2.8.2 tls 210 1.2.8.2 tls default: 211 1.2.8.2 tls break; 212 1.2.8.2 tls } 213 1.2.8.2 tls } 214 1.2.8.2 tls 215 1.2.8.2 tls /* protocol was rejected by foe */ 216 1.2.8.2 tls void cbcp_protrej(int iface) 217 1.2.8.2 tls { 218 1.2.8.2 tls } 219 1.2.8.2 tls 220 1.2.8.2 tls char *cbcp_codenames[] = { 221 1.2.8.2 tls "Request", "Response", "Ack" 222 1.2.8.2 tls }; 223 1.2.8.2 tls 224 1.2.8.2 tls char *cbcp_optionnames[] = { 225 1.2.8.2 tls "NoCallback", 226 1.2.8.2 tls "UserDefined", 227 1.2.8.2 tls "AdminDefined", 228 1.2.8.2 tls "List" 229 1.2.8.2 tls }; 230 1.2.8.2 tls 231 1.2.8.2 tls /* pretty print a packet */ 232 1.2.8.2 tls static int 233 1.2.8.2 tls cbcp_printpkt(p, plen, printer, arg) 234 1.2.8.2 tls u_char *p; 235 1.2.8.2 tls int plen; 236 1.2.8.2 tls void (*printer) __P((void *, char *, ...)); 237 1.2.8.2 tls void *arg; 238 1.2.8.2 tls { 239 1.2.8.2 tls int code, opt, id, len, olen, delay; 240 1.2.8.2 tls u_char *pstart; 241 1.2.8.2 tls 242 1.2.8.2 tls if (plen < HEADERLEN) 243 1.2.8.2 tls return 0; 244 1.2.8.2 tls pstart = p; 245 1.2.8.2 tls GETCHAR(code, p); 246 1.2.8.2 tls GETCHAR(id, p); 247 1.2.8.2 tls GETSHORT(len, p); 248 1.2.8.2 tls if (len < HEADERLEN || len > plen) 249 1.2.8.2 tls return 0; 250 1.2.8.2 tls 251 1.2.8.2 tls if (code >= 1 && code <= sizeof(cbcp_codenames) / sizeof(char *)) 252 1.2.8.2 tls printer(arg, " %s", cbcp_codenames[code-1]); 253 1.2.8.2 tls else 254 1.2.8.2 tls printer(arg, " code=0x%x", code); 255 1.2.8.2 tls 256 1.2.8.2 tls printer(arg, " id=0x%x", id); 257 1.2.8.2 tls len -= HEADERLEN; 258 1.2.8.2 tls 259 1.2.8.2 tls switch (code) { 260 1.2.8.2 tls case CBCP_REQ: 261 1.2.8.2 tls case CBCP_RESP: 262 1.2.8.2 tls case CBCP_ACK: 263 1.2.8.2 tls while(len >= 2) { 264 1.2.8.2 tls GETCHAR(opt, p); 265 1.2.8.2 tls GETCHAR(olen, p); 266 1.2.8.2 tls 267 1.2.8.2 tls if (olen < 2 || olen > len) { 268 1.2.8.2 tls break; 269 1.2.8.2 tls } 270 1.2.8.2 tls 271 1.2.8.2 tls printer(arg, " <"); 272 1.2.8.2 tls len -= olen; 273 1.2.8.2 tls 274 1.2.8.2 tls if (opt >= 1 && opt <= sizeof(cbcp_optionnames) / sizeof(char *)) 275 1.2.8.2 tls printer(arg, " %s", cbcp_optionnames[opt-1]); 276 1.2.8.2 tls else 277 1.2.8.2 tls printer(arg, " option=0x%x", opt); 278 1.2.8.2 tls 279 1.2.8.2 tls if (olen > 2) { 280 1.2.8.2 tls GETCHAR(delay, p); 281 1.2.8.2 tls printer(arg, " delay = %d", delay); 282 1.2.8.2 tls } 283 1.2.8.2 tls 284 1.2.8.2 tls if (olen > 3) { 285 1.2.8.2 tls int addrt; 286 1.2.8.2 tls char str[256]; 287 1.2.8.2 tls 288 1.2.8.2 tls GETCHAR(addrt, p); 289 1.2.8.2 tls __USE(addrt); 290 1.2.8.2 tls memcpy(str, p, olen - 4); 291 1.2.8.2 tls str[olen - 4] = 0; 292 1.2.8.2 tls printer(arg, " number = %s", str); 293 1.2.8.2 tls } 294 1.2.8.2 tls printer(arg, ">"); 295 1.2.8.2 tls } 296 1.2.8.2 tls break; 297 1.2.8.2 tls 298 1.2.8.2 tls default: 299 1.2.8.2 tls break; 300 1.2.8.2 tls } 301 1.2.8.2 tls 302 1.2.8.2 tls for (; len > 0; --len) { 303 1.2.8.2 tls GETCHAR(code, p); 304 1.2.8.2 tls printer(arg, " %.2x", code); 305 1.2.8.2 tls } 306 1.2.8.2 tls 307 1.2.8.2 tls return p - pstart; 308 1.2.8.2 tls } 309 1.2.8.2 tls 310 1.2.8.2 tls /* received CBCP request */ 311 1.2.8.2 tls static void 312 1.2.8.2 tls cbcp_recvreq(us, pckt, pcktlen) 313 1.2.8.2 tls cbcp_state *us; 314 1.2.8.2 tls u_char *pckt; 315 1.2.8.2 tls int pcktlen; 316 1.2.8.2 tls { 317 1.2.8.2 tls u_char type, opt_len, delay, addr_type; 318 1.2.8.2 tls char address[256]; 319 1.2.8.2 tls int len = pcktlen; 320 1.2.8.2 tls 321 1.2.8.2 tls address[0] = 0; 322 1.2.8.2 tls 323 1.2.8.2 tls while (len >= 2) { 324 1.2.8.2 tls dbglog("length: %d", len); 325 1.2.8.2 tls 326 1.2.8.2 tls GETCHAR(type, pckt); 327 1.2.8.2 tls GETCHAR(opt_len, pckt); 328 1.2.8.2 tls if (opt_len < 2 || opt_len > len) { 329 1.2.8.2 tls if (debug) 330 1.2.8.2 tls dbglog("CBCP: Malformed option length (%d/%d)", opt_len, len); 331 1.2.8.2 tls break; 332 1.2.8.2 tls } 333 1.2.8.2 tls 334 1.2.8.2 tls if (opt_len > 2) { 335 1.2.8.2 tls GETCHAR(delay, pckt); 336 1.2.8.2 tls __USE(delay); 337 1.2.8.2 tls } 338 1.2.8.2 tls 339 1.2.8.2 tls us->us_allowed |= (1 << type); 340 1.2.8.2 tls 341 1.2.8.2 tls switch(type) { 342 1.2.8.2 tls case CB_CONF_NO: 343 1.2.8.2 tls dbglog("no callback allowed"); 344 1.2.8.2 tls break; 345 1.2.8.2 tls 346 1.2.8.2 tls case CB_CONF_USER: 347 1.2.8.2 tls dbglog("user callback allowed"); 348 1.2.8.2 tls if (opt_len > 4) { 349 1.2.8.2 tls GETCHAR(addr_type, pckt); 350 1.2.8.2 tls __USE(addr_type); 351 1.2.8.2 tls memcpy(address, pckt, opt_len - 4); 352 1.2.8.2 tls address[opt_len - 4] = 0; 353 1.2.8.2 tls if (address[0]) 354 1.2.8.2 tls dbglog("address: %s", address); 355 1.2.8.2 tls } 356 1.2.8.2 tls break; 357 1.2.8.2 tls 358 1.2.8.2 tls case CB_CONF_ADMIN: 359 1.2.8.2 tls dbglog("user admin defined allowed"); 360 1.2.8.2 tls break; 361 1.2.8.2 tls 362 1.2.8.2 tls case CB_CONF_LIST: 363 1.2.8.2 tls break; 364 1.2.8.2 tls } 365 1.2.8.2 tls len -= opt_len; 366 1.2.8.2 tls } 367 1.2.8.2 tls if (len != 0) { 368 1.2.8.2 tls if (debug) 369 1.2.8.2 tls dbglog("cbcp_recvreq: malformed packet (%d bytes left)", len); 370 1.2.8.2 tls return; 371 1.2.8.2 tls } 372 1.2.8.2 tls 373 1.2.8.2 tls cbcp_resp(us); 374 1.2.8.2 tls } 375 1.2.8.2 tls 376 1.2.8.2 tls static void 377 1.2.8.2 tls cbcp_resp(us) 378 1.2.8.2 tls cbcp_state *us; 379 1.2.8.2 tls { 380 1.2.8.2 tls u_char cb_type; 381 1.2.8.2 tls u_char buf[256]; 382 1.2.8.2 tls u_char *bufp = buf; 383 1.2.8.2 tls int len = 0; 384 1.2.8.2 tls int slen; 385 1.2.8.2 tls 386 1.2.8.2 tls cb_type = us->us_allowed & us->us_type; 387 1.2.8.2 tls dbglog("cbcp_resp cb_type=%d", cb_type); 388 1.2.8.2 tls 389 1.2.8.2 tls #if 0 390 1.2.8.2 tls if (!cb_type) 391 1.2.8.2 tls lcp_down(us->us_unit); 392 1.2.8.2 tls #endif 393 1.2.8.2 tls 394 1.2.8.2 tls if (cb_type & ( 1 << CB_CONF_USER ) ) { 395 1.2.8.2 tls dbglog("cbcp_resp CONF_USER"); 396 1.2.8.2 tls slen = strlen(us->us_number); 397 1.2.8.2 tls if (slen > 250) { 398 1.2.8.2 tls warn("callback number truncated to 250 characters"); 399 1.2.8.2 tls slen = 250; 400 1.2.8.2 tls } 401 1.2.8.2 tls PUTCHAR(CB_CONF_USER, bufp); 402 1.2.8.2 tls len = 3 + 1 + slen + 1; 403 1.2.8.2 tls PUTCHAR(len , bufp); 404 1.2.8.2 tls PUTCHAR(5, bufp); /* delay */ 405 1.2.8.2 tls PUTCHAR(1, bufp); 406 1.2.8.2 tls BCOPY(us->us_number, bufp, slen + 1); 407 1.2.8.2 tls cbcp_send(us, CBCP_RESP, buf, len); 408 1.2.8.2 tls return; 409 1.2.8.2 tls } 410 1.2.8.2 tls 411 1.2.8.2 tls if (cb_type & ( 1 << CB_CONF_ADMIN ) ) { 412 1.2.8.2 tls dbglog("cbcp_resp CONF_ADMIN"); 413 1.2.8.2 tls PUTCHAR(CB_CONF_ADMIN, bufp); 414 1.2.8.2 tls len = 3; 415 1.2.8.2 tls PUTCHAR(len, bufp); 416 1.2.8.2 tls PUTCHAR(5, bufp); /* delay */ 417 1.2.8.2 tls cbcp_send(us, CBCP_RESP, buf, len); 418 1.2.8.2 tls return; 419 1.2.8.2 tls } 420 1.2.8.2 tls 421 1.2.8.2 tls if (cb_type & ( 1 << CB_CONF_NO ) ) { 422 1.2.8.2 tls dbglog("cbcp_resp CONF_NO"); 423 1.2.8.2 tls PUTCHAR(CB_CONF_NO, bufp); 424 1.2.8.2 tls len = 2; 425 1.2.8.2 tls PUTCHAR(len , bufp); 426 1.2.8.2 tls cbcp_send(us, CBCP_RESP, buf, len); 427 1.2.8.2 tls start_networks(us->us_unit); 428 1.2.8.2 tls return; 429 1.2.8.2 tls } 430 1.2.8.2 tls } 431 1.2.8.2 tls 432 1.2.8.2 tls static void 433 1.2.8.2 tls cbcp_send(us, code, buf, len) 434 1.2.8.2 tls cbcp_state *us; 435 1.2.8.2 tls int code; 436 1.2.8.2 tls u_char *buf; 437 1.2.8.2 tls int len; 438 1.2.8.2 tls { 439 1.2.8.2 tls u_char *outp; 440 1.2.8.2 tls int outlen; 441 1.2.8.2 tls 442 1.2.8.2 tls outp = outpacket_buf; 443 1.2.8.2 tls 444 1.2.8.2 tls outlen = 4 + len; 445 1.2.8.2 tls 446 1.2.8.2 tls MAKEHEADER(outp, PPP_CBCP); 447 1.2.8.2 tls 448 1.2.8.2 tls PUTCHAR(code, outp); 449 1.2.8.2 tls PUTCHAR(us->us_id, outp); 450 1.2.8.2 tls PUTSHORT(outlen, outp); 451 1.2.8.2 tls 452 1.2.8.2 tls if (len) 453 1.2.8.2 tls BCOPY(buf, outp, len); 454 1.2.8.2 tls 455 1.2.8.2 tls output(us->us_unit, outpacket_buf, outlen + PPP_HDRLEN); 456 1.2.8.2 tls } 457 1.2.8.2 tls 458 1.2.8.2 tls static void 459 1.2.8.2 tls cbcp_recvack(us, pckt, len) 460 1.2.8.2 tls cbcp_state *us; 461 1.2.8.2 tls u_char *pckt; 462 1.2.8.2 tls int len; 463 1.2.8.2 tls { 464 1.2.8.2 tls u_char type, delay, addr_type; 465 1.2.8.2 tls int opt_len; 466 1.2.8.2 tls char address[256]; 467 1.2.8.2 tls 468 1.2.8.2 tls if (len >= 2) { 469 1.2.8.2 tls GETCHAR(type, pckt); 470 1.2.8.2 tls GETCHAR(opt_len, pckt); 471 1.2.8.2 tls if (opt_len >= 2 && opt_len <= len) { 472 1.2.8.2 tls 473 1.2.8.2 tls if (opt_len > 2) { 474 1.2.8.2 tls GETCHAR(delay, pckt); 475 1.2.8.2 tls __USE(delay); 476 1.2.8.2 tls } 477 1.2.8.2 tls 478 1.2.8.2 tls if (opt_len > 4) { 479 1.2.8.2 tls GETCHAR(addr_type, pckt); 480 1.2.8.2 tls __USE(addr_type); 481 1.2.8.2 tls memcpy(address, pckt, opt_len - 4); 482 1.2.8.2 tls address[opt_len - 4] = 0; 483 1.2.8.2 tls if (address[0]) 484 1.2.8.2 tls dbglog("peer will call: %s", address); 485 1.2.8.2 tls } 486 1.2.8.2 tls if (type == CB_CONF_NO) 487 1.2.8.2 tls return; 488 1.2.8.2 tls 489 1.2.8.2 tls cbcp_up(us); 490 1.2.8.2 tls 491 1.2.8.2 tls } else if (debug) 492 1.2.8.2 tls dbglog("cbcp_recvack: malformed packet"); 493 1.2.8.2 tls } 494 1.2.8.2 tls } 495 1.2.8.2 tls 496 1.2.8.2 tls /* ok peer will do callback */ 497 1.2.8.2 tls static void 498 1.2.8.2 tls cbcp_up(us) 499 1.2.8.2 tls cbcp_state *us; 500 1.2.8.2 tls { 501 1.2.8.2 tls persist = 0; 502 1.2.8.2 tls status = EXIT_CALLBACK; 503 1.2.8.2 tls lcp_close(0, "Call me back, please"); 504 1.2.8.2 tls } 505
Indexes created Tue Aug 11 00:25:38 UTC 2026