| File: | src/usr.sbin/npppd/npppd/npppd.c |
| Warning: | line 1735, column 6 Value stored to 'rval' is never read |
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| 1 | /* $OpenBSD: npppd.c,v 1.53 2022/07/01 09:57:24 mvs Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2005-2008,2009 Internet Initiative Japan Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | /**@file |
| 29 | * Next pppd(nppd). This file provides a npppd daemon process and operations |
| 30 | * for npppd instance. |
| 31 | * @author Yasuoka Masahiko |
| 32 | * $Id: npppd.c,v 1.53 2022/07/01 09:57:24 mvs Exp $ |
| 33 | */ |
| 34 | #include "version.h" |
| 35 | #include <sys/param.h> /* ALIGNED_POINTER */ |
| 36 | #include <sys/types.h> |
| 37 | #include <sys/socket.h> |
| 38 | #include <sys/sysctl.h> |
| 39 | #include <sys/wait.h> |
| 40 | #include <netinet/in.h> |
| 41 | #include <netinet/ip.h> |
| 42 | #include <net/route.h> |
| 43 | #include <arpa/inet.h> |
| 44 | #include <net/if_dl.h> |
| 45 | #include <unistd.h> |
| 46 | #include <time.h> |
| 47 | #include <syslog.h> |
| 48 | #include <string.h> |
| 49 | #include <stdlib.h> |
| 50 | #include <stdio.h> |
| 51 | #include <signal.h> |
| 52 | #include <netdb.h> |
| 53 | #include <fcntl.h> |
| 54 | #include <event.h> |
| 55 | #include <errno(*__errno()).h> |
| 56 | #include <err.h> |
| 57 | #include <pwd.h> |
| 58 | |
| 59 | #include "pathnames.h" |
| 60 | #include "debugutil.h" |
| 61 | #include "addr_range.h" |
| 62 | #include "npppd_subr.h" |
| 63 | #include "npppd_local.h" |
| 64 | #include "npppd_auth.h" |
| 65 | #include "radish.h" |
| 66 | #include "net_utils.h" |
| 67 | #include "time_utils.h" |
| 68 | |
| 69 | #include "l2tp_local.h" /* XXX sa_cookie */ |
| 70 | |
| 71 | #ifdef USE_NPPPD_ARP |
| 72 | #include "npppd_arp.h" |
| 73 | #endif |
| 74 | |
| 75 | #ifdef USE_NPPPD_PIPEX1 |
| 76 | #ifdef USE_NPPPD_PPPOE1 |
| 77 | #include "pppoe_local.h" |
| 78 | #endif /* USE_NPPPD_PPPOE */ |
| 79 | #include "psm-opt.h" |
| 80 | #include <sys/ioctl.h> |
| 81 | #include <net/pipex.h> |
| 82 | #endif /* USE_NPPPD_PIPEX */ |
| 83 | |
| 84 | #include "accept.h" |
| 85 | #include "log.h" |
| 86 | |
| 87 | static npppd s_npppd; /* singleton */ |
| 88 | |
| 89 | static void npppd_reload0 (npppd *); |
| 90 | static void npppd_update_pool_reference (npppd *); |
| 91 | static int npppd_rd_walktree_delete(struct radish_head *); |
| 92 | static __dead__attribute__((__noreturn__)) void usage (void); |
| 93 | static void npppd_stop_really (npppd *); |
| 94 | static uint32_t str_hash(const void *, int); |
| 95 | static void npppd_on_sighup (int, short, void *); |
| 96 | static void npppd_on_sigterm (int, short, void *); |
| 97 | static void npppd_on_sigint (int, short, void *); |
| 98 | static void npppd_on_sigchld (int, short, void *); |
| 99 | static void npppd_reset_timer(npppd *); |
| 100 | static void npppd_timer(int, short, void *); |
| 101 | static void npppd_auth_finalizer_periodic(npppd *); |
| 102 | static int rd2slist_walk (struct radish *, void *); |
| 103 | static int rd2slist (struct radish_head *, slist *); |
| 104 | static slist *npppd_get_ppp_by_user (npppd *, const char *); |
| 105 | static int npppd_get_all_users (npppd *, slist *); |
| 106 | static struct ipcpstat |
| 107 | *npppd_get_ipcp_stat(struct ipcpstat_head *, const char *); |
| 108 | static void npppd_destroy_ipcp_stats(struct ipcpstat_head *); |
| 109 | static void npppd_ipcp_stats_reload(npppd *); |
| 110 | |
| 111 | #ifndef NO_ROUTE_FOR_POOLED_ADDRESS |
| 112 | static struct in_addr loop; /* initialize at npppd_init() */ |
| 113 | #endif |
| 114 | static uint32_t str_hash(const void *, int); |
| 115 | |
| 116 | #ifdef USE_NPPPD_PIPEX1 |
| 117 | static void pipex_periodic(npppd *); |
| 118 | #endif /* USE_NPPPD_PIPEX */ |
| 119 | |
| 120 | #ifdef NPPPD_DEBUG |
| 121 | #define NPPPD_DBG(x) log_printf x |
| 122 | #define NPPPD_ASSERT(x) ASSERT(x)((void)0); |
| 123 | #else |
| 124 | #define NPPPD_DBG(x) |
| 125 | #define NPPPD_ASSERT(x) |
| 126 | #endif |
| 127 | |
| 128 | /*********************************************************************** |
| 129 | * Daemon process |
| 130 | ***********************************************************************/ |
| 131 | int main (int, char *[]); |
| 132 | int debugsyslog = 0; /* used by log.c */ |
| 133 | |
| 134 | int |
| 135 | main(int argc, char *argv[]) |
| 136 | { |
| 137 | int ch, stop_by_error, runasdaemon = 1, nflag = 0; |
| 138 | const char *npppd_conf0 = DEFAULT_NPPPD_CONF"/etc/npppd/npppd.conf"; |
| 139 | struct passwd *pw; |
| 140 | |
| 141 | while ((ch = getopt(argc, argv, "nf:d")) != -1) { |
| 142 | switch (ch) { |
| 143 | case 'n': |
| 144 | nflag = 1; |
| 145 | break; |
| 146 | case 'f': |
| 147 | npppd_conf0 = optarg; |
| 148 | break; |
| 149 | case 'd': |
| 150 | debuglevel++; |
| 151 | runasdaemon = 0; |
| 152 | break; |
| 153 | default: |
| 154 | usage(); |
| 155 | } |
| 156 | } |
| 157 | argc -= optind; |
| 158 | argv += optind; |
| 159 | if (argc != 0) |
| 160 | usage(); |
| 161 | if (nflag) { |
| 162 | debuglevel++; |
| 163 | runasdaemon = 0; |
| 164 | } |
| 165 | |
| 166 | /* for log.c */ |
| 167 | log_init(debuglevel); |
| 168 | if (debuglevel > 0) { |
| 169 | /* for ../common/debugutil.c */ |
| 170 | debug_set_debugfp(stderr(&__sF[2])); |
| 171 | debug_use_syslog(0); |
| 172 | } |
| 173 | if (runasdaemon) |
| 174 | daemon(0, 0); |
| 175 | |
| 176 | /* check for root privileges */ |
| 177 | if (geteuid()) |
| 178 | errx(1, "need root privileges"); |
| 179 | /* check for npppd user */ |
| 180 | if (getpwnam(NPPPD_USER"_ppp") == NULL((void *)0)) |
| 181 | errx(1, "unknown user %s", NPPPD_USER"_ppp"); |
| 182 | |
| 183 | if (privsep_init() != 0) |
| 184 | err(1, "cannot drop privileges"); |
| 185 | |
| 186 | if (nflag) { |
| 187 | if (npppd_config_check(npppd_conf0) == 0) { |
| 188 | fprintf(stderr(&__sF[2]), "configuration OK\n"); |
| 189 | exit(EXIT_SUCCESS0); |
| 190 | } |
| 191 | exit(EXIT_FAILURE1); |
| 192 | } |
| 193 | if (npppd_init(&s_npppd, npppd_conf0) != 0) |
| 194 | exit(EXIT_FAILURE1); |
| 195 | |
| 196 | if ((pw = getpwnam(NPPPD_USER"_ppp")) == NULL((void *)0)) |
| 197 | err(EXIT_FAILURE1, "gwpwnam"); |
| 198 | if (chroot(pw->pw_dir) == -1) |
| 199 | err(EXIT_FAILURE1, "chroot"); |
| 200 | if (chdir("/") == -1) |
| 201 | err(EXIT_FAILURE1, "chdir(\"/\")"); |
| 202 | if (setgroups(1, &pw->pw_gid) || |
| 203 | setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) || |
| 204 | setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) |
| 205 | err(EXIT_FAILURE1, "cannot drop privileges"); |
| 206 | /* privileges is dropped */ |
| 207 | |
| 208 | npppd_start(&s_npppd); |
| 209 | stop_by_error = s_npppd.stop_by_error; |
| 210 | npppd_fini(&s_npppd); |
| 211 | privsep_fini(); |
| 212 | log_printf(LOG_NOTICE5, "Terminate npppd."); |
| 213 | |
| 214 | exit((!stop_by_error)? EXIT_SUCCESS0 : EXIT_FAILURE1); |
| 215 | } |
| 216 | |
| 217 | static __dead__attribute__((__noreturn__)) void |
| 218 | usage(void) |
| 219 | { |
| 220 | fprintf(stderr(&__sF[2]), "usage: npppd [-dn] [-f config_file]\n"); |
| 221 | exit(1); |
| 222 | } |
| 223 | |
| 224 | /** Returns the singleton npppd instance */ |
| 225 | npppd * |
| 226 | npppd_get_npppd() |
| 227 | { |
| 228 | return &s_npppd; |
| 229 | } |
| 230 | |
| 231 | /*********************************************************************** |
| 232 | * Operations to npppd itself (initialize/finalize/start/stop) |
| 233 | ***********************************************************************/ |
| 234 | /** Initialize the npppd */ |
| 235 | int |
| 236 | npppd_init(npppd *_this, const char *config_file) |
| 237 | { |
| 238 | int i, status = -1, value; |
| 239 | const char *pidpath0; |
| 240 | FILE *pidfp = NULL((void *)0); |
| 241 | struct tunnconf *tunn; |
| 242 | struct ipcpconf *ipcpconf; |
| 243 | struct ipcpstat *ipcpstat; |
| 244 | int mib[] = { CTL_NET4, PF_PIPEX35, PIPEXCTL_ENABLE1 }; |
| 245 | size_t size; |
| 246 | |
| 247 | memset(_this, 0, sizeof(npppd)); |
| 248 | #ifndef NO_ROUTE_FOR_POOLED_ADDRESS |
| 249 | loop.s_addr = htonl(INADDR_LOOPBACK)(__uint32_t)(__builtin_constant_p(((u_int32_t)(0x7f000001))) ? (__uint32_t)(((__uint32_t)(((u_int32_t)(0x7f000001))) & 0xff ) << 24 | ((__uint32_t)(((u_int32_t)(0x7f000001))) & 0xff00) << 8 | ((__uint32_t)(((u_int32_t)(0x7f000001)) ) & 0xff0000) >> 8 | ((__uint32_t)(((u_int32_t)(0x7f000001 ))) & 0xff000000) >> 24) : __swap32md(((u_int32_t)( 0x7f000001)))); |
| 250 | #endif |
| 251 | |
| 252 | NPPPD_ASSERT(config_file != NULL); |
| 253 | |
| 254 | pidpath0 = NULL((void *)0); |
| 255 | _this->pid = getpid(); |
| 256 | slist_init(&_this->realms); |
| 257 | npppd_conf_init(&_this->conf); |
| 258 | |
| 259 | log_printf(LOG_NOTICE5, "Starting npppd pid=%u version=%s", |
| 260 | _this->pid, VERSION"5.0.0"); |
| 261 | #if defined(BUILD_DATE) && defined(BUILD_TIME) |
| 262 | log_printf(LOG_INFO6, "Build %s %s ", BUILD_DATE, BUILD_TIME); |
| 263 | #endif |
| 264 | if (get_nanotime() == INT64_MIN(-0x7fffffffffffffffLL - 1)) { |
| 265 | log_printf(LOG_ERR3, "get_nanotime() failed: %m"); |
| 266 | return 1; |
| 267 | } |
| 268 | |
| 269 | if (realpath(config_file, _this->config_file) == NULL((void *)0)) { |
| 270 | log_printf(LOG_ERR3, "realpath(%s,) failed in %s(): %m", |
| 271 | config_file, __func__); |
| 272 | return 1; |
| 273 | } |
| 274 | /* we assume 4.4 compatible realpath(). See realpath(3) on BSD. */ |
| 275 | NPPPD_ASSERT(_this->config_file[0] == '/'); |
| 276 | |
| 277 | _this->boot_id = arc4random(); |
| 278 | |
| 279 | #ifdef USE_NPPPD_L2TP1 |
| 280 | if (l2tpd_init(&_this->l2tpd) != 0) |
| 281 | return (-1); |
| 282 | #endif |
| 283 | #ifdef USE_NPPPD_PPTP1 |
| 284 | if (pptpd_init(&_this->pptpd) != 0) |
| 285 | return (-1); |
| 286 | #endif |
| 287 | #ifdef USE_NPPPD_PPPOE1 |
| 288 | if (pppoed_init(&_this->pppoed) != 0) |
| 289 | return (-1); |
| 290 | #endif |
| 291 | LIST_INIT(&_this->ipcpstats)do { ((&_this->ipcpstats)->lh_first) = ((void *)0); } while (0); |
| 292 | |
| 293 | /* load configuration */ |
| 294 | if ((status = npppd_reload_config(_this)) != 0) |
| 295 | return status; |
| 296 | |
| 297 | TAILQ_FOREACH(tunn, &_this->conf.tunnconfs, entry)for((tunn) = ((&_this->conf.tunnconfs)->tqh_first); (tunn) != ((void *)0); (tunn) = ((tunn)->entry.tqe_next)) { |
| 298 | if (tunn->pipex) { |
| 299 | size = sizeof(value); |
| 300 | if (!sysctl(mib, nitems(mib)(sizeof((mib)) / sizeof((mib)[0])), &value, &size, NULL((void *)0), 0) |
| 301 | && value == 0) |
| 302 | log_printf(LOG_WARNING4, |
| 303 | "pipex(4) is disabled by sysctl"); |
| 304 | break; |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | if ((_this->map_user_ppp = hash_create( |
| 309 | (int (*) (const void *, const void *))strcmp, str_hash, |
| 310 | NPPPD_USER_HASH_SIZ1777)) == NULL((void *)0)) { |
| 311 | log_printf(LOG_ERR3, "hash_create() failed in %s(): %m", |
| 312 | __func__); |
| 313 | return -1; |
| 314 | } |
| 315 | |
| 316 | if (npppd_ifaces_load_config(_this) != 0) { |
| 317 | return -1; |
| 318 | } |
| 319 | |
| 320 | TAILQ_FOREACH(ipcpconf, &_this->conf.ipcpconfs, entry)for((ipcpconf) = ((&_this->conf.ipcpconfs)->tqh_first ); (ipcpconf) != ((void *)0); (ipcpconf) = ((ipcpconf)->entry .tqe_next)) { |
| 321 | ipcpstat = malloc(sizeof(*ipcpstat)); |
| 322 | if (ipcpstat == NULL((void *)0)) { |
| 323 | log_printf(LOG_ERR3, "initializing ipcp_stats failed : %m"); |
| 324 | npppd_destroy_ipcp_stats(&_this->ipcpstats); |
| 325 | return -1; |
| 326 | } |
| 327 | memset(ipcpstat, 0, sizeof(*ipcpstat)); |
| 328 | strlcpy(ipcpstat->name, ipcpconf->name, sizeof(ipcpstat->name)); |
| 329 | LIST_INSERT_HEAD(&_this->ipcpstats, ipcpstat, entry)do { if (((ipcpstat)->entry.le_next = (&_this->ipcpstats )->lh_first) != ((void *)0)) (&_this->ipcpstats)-> lh_first->entry.le_prev = &(ipcpstat)->entry.le_next ; (&_this->ipcpstats)->lh_first = (ipcpstat); (ipcpstat )->entry.le_prev = &(&_this->ipcpstats)->lh_first ; } while (0); |
| 330 | } |
| 331 | |
| 332 | pidpath0 = DEFAULT_NPPPD_PIDFILE"/var/run/npppd.pid"; |
| 333 | |
| 334 | /* initialize event(3) */ |
| 335 | event_init(); |
| 336 | _this->ctl_sock.cs_name = NPPPD_SOCKET"/var/run/npppd.sock"; |
| 337 | _this->ctl_sock.cs_ctx = _this; |
| 338 | if (control_init(&_this->ctl_sock) == -1) { |
| 339 | log_printf(LOG_ERR3, "control_init() failed %s(): %m", |
| 340 | __func__); |
| 341 | return (-1); |
| 342 | } |
| 343 | if (control_listen(&_this->ctl_sock) == -1) { |
| 344 | log_printf(LOG_ERR3, "control_listen() failed %s(): %m", |
| 345 | __func__); |
| 346 | return (-1); |
| 347 | } |
| 348 | accept_init(); |
| 349 | |
| 350 | /* ignore signals */ |
| 351 | signal(SIGPIPE13, SIG_IGN(void (*)(int))1); |
| 352 | signal(SIGURG16, SIG_IGN(void (*)(int))1); |
| 353 | |
| 354 | /* set signal handlers */ |
| 355 | signal_set(&_this->ev_sigterm, SIGTERM, npppd_on_sigterm, _this)event_set(&_this->ev_sigterm, 15, 0x08|0x10, npppd_on_sigterm , _this); |
| 356 | signal_set(&_this->ev_sigint, SIGINT, npppd_on_sigint, _this)event_set(&_this->ev_sigint, 2, 0x08|0x10, npppd_on_sigint , _this); |
| 357 | signal_set(&_this->ev_sighup, SIGHUP, npppd_on_sighup, _this)event_set(&_this->ev_sighup, 1, 0x08|0x10, npppd_on_sighup , _this); |
| 358 | signal_set(&_this->ev_sigchld, SIGCHLD, npppd_on_sigchld, _this)event_set(&_this->ev_sigchld, 20, 0x08|0x10, npppd_on_sigchld , _this); |
| 359 | signal_add(&_this->ev_sigterm, NULL)event_add(&_this->ev_sigterm, ((void *)0)); |
| 360 | signal_add(&_this->ev_sigint, NULL)event_add(&_this->ev_sigint, ((void *)0)); |
| 361 | signal_add(&_this->ev_sighup, NULL)event_add(&_this->ev_sighup, ((void *)0)); |
| 362 | signal_add(&_this->ev_sigchld, NULL)event_add(&_this->ev_sigchld, ((void *)0)); |
| 363 | |
| 364 | evtimer_set(&_this->ev_timer, npppd_timer, _this)event_set(&_this->ev_timer, -1, 0, npppd_timer, _this); |
| 365 | |
| 366 | /* start tun(4) or pppac(4) */ |
| 367 | status = 0; |
| 368 | for (i = 0; i < countof(_this->iface)(sizeof(_this->iface) / sizeof((_this->iface)[0])); i++) { |
| 369 | if (_this->iface[i].initialized != 0) |
| 370 | status |= npppd_iface_start(&_this->iface[i]); |
| 371 | } |
| 372 | if (status != 0) |
| 373 | return -1; |
| 374 | |
| 375 | /* |
| 376 | * If the npppd can start(open) interfaces successfully, it can |
| 377 | * act as only one npppd process on the system and overwrite the pid |
| 378 | * file. |
| 379 | */ |
| 380 | if ((pidfp = fopen(pidpath0, "w+")) == NULL((void *)0)) { |
| 381 | log_printf(LOG_ERR3, "fopen(%s,w+) failed in %s(): %m", |
| 382 | pidpath0, __func__); |
| 383 | return -1; |
| 384 | } |
| 385 | strlcpy(_this->pidpath, pidpath0, sizeof(_this->pidpath)); |
| 386 | fprintf(pidfp, "%u\n", _this->pid); |
| 387 | fclose(pidfp); |
| 388 | pidfp = NULL((void *)0); |
| 389 | #ifdef USE_NPPPD_ARP |
| 390 | arp_set_strictintfnetwork(npppd_config_str_equali(_this, "arpd.strictintfnetwork", "true", ARPD_STRICTINTFNETWORK_DEFAULT)); |
| 391 | if (npppd_config_str_equali(_this, "arpd.enabled", "true", ARPD_DEFAULT) == 1) |
| 392 | arp_sock_init(); |
| 393 | #endif |
| 394 | if ((status = npppd_modules_reload(_this)) != 0) |
| 395 | return status; |
| 396 | |
| 397 | npppd_update_pool_reference(_this); |
| 398 | |
| 399 | return 0; |
| 400 | } |
| 401 | |
| 402 | /** start the npppd */ |
| 403 | void |
| 404 | npppd_start(npppd *_this) |
| 405 | { |
| 406 | int rval = 0; |
| 407 | |
| 408 | npppd_reset_timer(_this); |
| 409 | while ((rval = event_loop(EVLOOP_ONCE0x01)) == 0) { |
| 410 | if (_this->finalized != 0) |
| 411 | break; |
| 412 | } |
| 413 | if (rval != 0) { |
| 414 | log_printf(LOG_CRIT2, "event_loop() failed: %m"); |
| 415 | abort(); |
| 416 | } |
| 417 | } |
| 418 | |
| 419 | /** stop the npppd */ |
| 420 | void |
| 421 | npppd_stop(npppd *_this) |
| 422 | { |
| 423 | int i; |
| 424 | #ifdef USE_NPPPD_L2TP1 |
| 425 | l2tpd_stop(&_this->l2tpd); |
| 426 | #endif |
| 427 | #ifdef USE_NPPPD_PPTP1 |
| 428 | pptpd_stop(&_this->pptpd); |
| 429 | #endif |
| 430 | #ifdef USE_NPPPD_PPPOE1 |
| 431 | pppoed_stop(&_this->pppoed); |
| 432 | #endif |
| 433 | #ifdef USE_NPPPD_ARP |
| 434 | arp_sock_fini(); |
| 435 | #endif |
| 436 | close(_this->ctl_sock.cs_fd); |
| 437 | control_cleanup(&_this->ctl_sock); |
| 438 | |
| 439 | for (i = countof(_this->iface)(sizeof(_this->iface) / sizeof((_this->iface)[0])) - 1; i >= 0; i--) { |
| 440 | if (_this->iface[i].initialized != 0) |
| 441 | npppd_iface_stop(&_this->iface[i]); |
| 442 | } |
| 443 | npppd_set_radish(_this, NULL((void *)0)); |
| 444 | |
| 445 | _this->finalizing = 1; |
| 446 | npppd_reset_timer(_this); |
| 447 | } |
| 448 | |
| 449 | static void |
| 450 | npppd_stop_really(npppd *_this) |
| 451 | { |
| 452 | int i; |
| 453 | #if defined(USE_NPPPD_L2TP1) || defined(USE_NPPPD_PPTP1) |
| 454 | int wait_again; |
| 455 | |
| 456 | wait_again = 0; |
| 457 | |
| 458 | #ifdef USE_NPPPD_L2TP1 |
| 459 | if (!l2tpd_is_stopped(&_this->l2tpd)(((&_this->l2tpd)->state != 2 && (&_this ->l2tpd)->state != 1)? 1 : 0)) |
| 460 | wait_again |= 1; |
| 461 | #endif |
| 462 | #ifdef USE_NPPPD_PPTP1 |
| 463 | if (!pptpd_is_stopped(&_this->pptpd)(((&_this->pptpd)->state != 2 && (&_this ->pptpd)->state != 1)? 1 : 0)) |
| 464 | wait_again |= 1; |
| 465 | #endif |
| 466 | if (wait_again != 0) { |
| 467 | npppd_reset_timer(_this); |
| 468 | return; |
| 469 | } |
| 470 | #endif |
| 471 | for (i = countof(_this->iface)(sizeof(_this->iface) / sizeof((_this->iface)[0])) - 1; i >= 0; i--) { |
| 472 | npppd_iface_fini(&_this->iface[i]); |
| 473 | } |
| 474 | _this->finalized = 1; |
| 475 | } |
| 476 | |
| 477 | /** finalize the npppd */ |
| 478 | void |
| 479 | npppd_fini(npppd *_this) |
| 480 | { |
| 481 | int i; |
| 482 | npppd_auth_base *auth_base; |
| 483 | |
| 484 | #ifdef USE_NPPPD_L2TP1 |
| 485 | l2tpd_uninit(&_this->l2tpd); |
| 486 | #endif |
| 487 | #ifdef USE_NPPPD_PPTP1 |
| 488 | pptpd_uninit(&_this->pptpd); |
| 489 | #endif |
| 490 | #ifdef USE_NPPPD_PPPOE1 |
| 491 | pppoed_uninit(&_this->pppoed); |
| 492 | #endif |
| 493 | for (slist_itr_first(&_this->realms); |
| 494 | slist_itr_has_next(&_this->realms);) { |
| 495 | auth_base = slist_itr_next(&_this->realms); |
| 496 | npppd_auth_destroy(auth_base); |
| 497 | } |
| 498 | for (i = countof(_this->iface)(sizeof(_this->iface) / sizeof((_this->iface)[0])) - 1; i >= 0; i--) { |
| 499 | if (_this->iface[i].initialized != 0) |
| 500 | npppd_iface_fini(&_this->iface[i]); |
| 501 | } |
| 502 | |
| 503 | for (i = countof(_this->pool)(sizeof(_this->pool) / sizeof((_this->pool)[0])) - 1; i >= 0; i--) { |
| 504 | if (_this->pool[i].initialized != 0) |
| 505 | npppd_pool_uninit(&_this->pool[i]); |
| 506 | } |
| 507 | |
| 508 | npppd_destroy_ipcp_stats(&_this->ipcpstats); |
| 509 | |
| 510 | signal_del(&_this->ev_sigterm)event_del(&_this->ev_sigterm); |
| 511 | signal_del(&_this->ev_sigint)event_del(&_this->ev_sigint); |
| 512 | signal_del(&_this->ev_sighup)event_del(&_this->ev_sighup); |
| 513 | signal_del(&_this->ev_sigchld)event_del(&_this->ev_sigchld); |
| 514 | |
| 515 | npppd_conf_fini(&_this->conf); |
| 516 | |
| 517 | slist_fini(&_this->realms); |
| 518 | |
| 519 | if (_this->map_user_ppp != NULL((void *)0)) |
| 520 | hash_free(_this->map_user_ppp); |
| 521 | } |
| 522 | |
| 523 | /*********************************************************************** |
| 524 | * Timer related functions |
| 525 | ***********************************************************************/ |
| 526 | static void |
| 527 | npppd_reset_timer(npppd *_this) |
| 528 | { |
| 529 | struct timeval tv; |
| 530 | |
| 531 | if (_this->finalizing != 0) { |
| 532 | /* we can use the timer exclusively on finalizing */ |
| 533 | tv.tv_usec = 500000; |
| 534 | tv.tv_sec = 0; |
| 535 | evtimer_add(&_this->ev_timer, &tv)event_add(&_this->ev_timer, &tv); |
| 536 | } else { |
| 537 | tv.tv_usec = 0; |
| 538 | tv.tv_sec = NPPPD_TIMER_TICK_IVAL4; |
| 539 | evtimer_add(&_this->ev_timer, &tv)event_add(&_this->ev_timer, &tv); |
| 540 | } |
| 541 | } |
| 542 | |
| 543 | static void |
| 544 | npppd_timer(int fd, short evtype, void *ctx) |
| 545 | { |
| 546 | npppd *_this; |
| 547 | |
| 548 | _this = ctx; |
| 549 | if (_this->finalizing != 0) { |
| 550 | npppd_stop_really(_this); /* The timer has been reset */ |
| 551 | return; /* we can use the timer exclusively on finalizing */ |
| 552 | } |
| 553 | _this->secs += NPPPD_TIMER_TICK_IVAL4; |
| 554 | if (_this->reloading_count > 0) { |
| 555 | _this->reloading_count -= NPPPD_TIMER_TICK_IVAL4; |
| 556 | if (_this->reloading_count <= 0) { |
| 557 | npppd_reload0(_this); |
| 558 | _this->reloading_count = 0; |
| 559 | } |
| 560 | } else { |
| 561 | if ((_this->secs % TIMER_TICK_RUP(((((300) % 4) == 0) ? (300) : (300) + 4 - ((300) % 4)) |
| 562 | NPPPD_AUTH_REALM_FINALIZER_INTERVAL)((((300) % 4) == 0) ? (300) : (300) + 4 - ((300) % 4))) == 0) |
| 563 | npppd_auth_finalizer_periodic(_this); |
| 564 | } |
| 565 | |
| 566 | #ifdef USE_NPPPD_PPPOE1 |
| 567 | if (pppoed_need_polling(&_this->pppoed)(((&_this->pppoed)->listen_incomplete != 0)? 1 : 0)) |
| 568 | pppoed_reload_listeners(&_this->pppoed); |
| 569 | #endif |
| 570 | #ifdef USE_NPPPD_PIPEX1 |
| 571 | pipex_periodic(_this); |
| 572 | #endif |
| 573 | |
| 574 | npppd_reset_timer(_this); |
| 575 | } |
| 576 | |
| 577 | int |
| 578 | npppd_reset_routing_table(npppd *_this, int pool_only) |
| 579 | { |
| 580 | #ifndef NO_ROUTE_FOR_POOLED_ADDRESS |
| 581 | slist rtlist0; |
| 582 | |
| 583 | if (_this->iface[0].using_pppx) |
| 584 | return 0; |
| 585 | |
| 586 | slist_init(&rtlist0); |
| 587 | if (rd2slist(_this->rd, &rtlist0) != 0) |
| 588 | return 1; |
| 589 | |
| 590 | for (slist_itr_first(&rtlist0); slist_itr_has_next(&rtlist0); ) { |
| 591 | struct radish *rd; |
| 592 | struct sockaddr_npppd *snp; |
| 593 | npppd_ppp *ppp; |
| 594 | int is_first; |
| 595 | |
| 596 | rd = slist_itr_next(&rtlist0); |
| 597 | snp = rd->rd_rtent; |
| 598 | |
| 599 | is_first = 1; |
| 600 | for (snp = rd->rd_rtent; snp != NULL((void *)0); snp = snp->snp_next) { |
| 601 | switch (snp->snp_type) { |
| 602 | case SNP_POOL1: |
| 603 | case SNP_DYN_POOL2: |
| 604 | if (is_first) |
| 605 | in_route_add(&snp->snp_addrsin4.sin_addr, |
| 606 | &snp->snp_masksin4mask.sin_addr, &loop, |
| 607 | LOOPBACK_IFNAME"lo0", RTF_BLACKHOLE0x1000, 0); |
| 608 | break; |
| 609 | |
| 610 | case SNP_PPP3: |
| 611 | if (pool_only) |
| 612 | break; |
| 613 | ppp = snp->snp_data_ptr; |
| 614 | if (ppp->ppp_framed_ip_netmasksnp.sin4mask.sin_addr.s_addr |
| 615 | == 0xffffffffL) { |
| 616 | in_host_route_add(&ppp-> |
| 617 | ppp_framed_ip_addresssnp.sin4.sin_addr, |
| 618 | &ppp_iface(ppp)(&(ppp)->pppd->iface[(ppp)->ifidx])->ip4addr, |
| 619 | ppp_iface(ppp)(&(ppp)->pppd->iface[(ppp)->ifidx])->ifname, |
| 620 | MRU_IPMTU(ppp->peer_mru)(ppp->peer_mru)); |
| 621 | } else { |
| 622 | in_route_add(&ppp-> |
| 623 | ppp_framed_ip_addresssnp.sin4.sin_addr, |
| 624 | &ppp->ppp_framed_ip_netmasksnp.sin4mask.sin_addr, |
| 625 | &ppp_iface(ppp)(&(ppp)->pppd->iface[(ppp)->ifidx])->ip4addr, |
| 626 | ppp_iface(ppp)(&(ppp)->pppd->iface[(ppp)->ifidx])->ifname, 0, |
| 627 | MRU_IPMTU(ppp->peer_mru)(ppp->peer_mru)); |
| 628 | } |
| 629 | break; |
| 630 | } |
| 631 | is_first = 0; |
| 632 | } |
| 633 | |
| 634 | } |
| 635 | |
| 636 | slist_fini(&rtlist0); |
| 637 | #endif |
| 638 | return 0; |
| 639 | } |
| 640 | |
| 641 | /*********************************************************************** |
| 642 | * Other npppd related functions. |
| 643 | ***********************************************************************/ |
| 644 | /** |
| 645 | * Get the user's password. Return 0 on success. |
| 646 | * |
| 647 | * @param username Username who acquires password |
| 648 | * @param password A pointer to a buffer space to store the password. |
| 649 | * Use NULL when you need to know only the length of |
| 650 | * the password. |
| 651 | * @param plpassword A pointer to the length of the password parameter. |
| 652 | * This function uses this parameter value and stores |
| 653 | * the required length value pointed to by this |
| 654 | * parameter. Use NULL when use don't need to know |
| 655 | * the password and its length. |
| 656 | * @return If the function succeeds, 0 is returned. The function returns |
| 657 | * 1 if the username is unknown, returns 2 if the password buffer |
| 658 | * length is not enough. It returns negative value for other |
| 659 | * errors. |
| 660 | */ |
| 661 | int |
| 662 | npppd_get_user_password(npppd *_this, npppd_ppp *ppp, |
| 663 | const char *username, char *password, int *plpassword) |
| 664 | { |
| 665 | char buf0[MAX_USERNAME_LENGTH256]; |
| 666 | |
| 667 | NPPPD_ASSERT(ppp->realm != NULL); |
| 668 | return npppd_auth_get_user_password(ppp->realm, |
| 669 | npppd_auth_username_for_auth(ppp->realm, username, buf0), password, |
| 670 | plpassword); |
| 671 | } |
| 672 | |
| 673 | /** Get the Framed-IP-Address attribute of the user */ |
| 674 | struct in_addr * |
| 675 | npppd_get_user_framed_ip_address(npppd *_this, npppd_ppp *ppp, |
| 676 | const char *username) |
| 677 | { |
| 678 | |
| 679 | if (ppp->peer_auth == 0) { |
| 680 | ppp->realm_framed_ip_address.s_addr = 0; |
| 681 | goto do_default; |
| 682 | } |
| 683 | NPPPD_ASSERT(ppp->realm != NULL); |
| 684 | |
| 685 | if (ppp->realm_framed_ip_address.s_addr != 0) |
| 686 | return &ppp->realm_framed_ip_address; |
| 687 | |
| 688 | /* assign by the authentication realm */ |
| 689 | if (npppd_auth_get_framed_ip(ppp->realm, username, |
| 690 | &ppp->realm_framed_ip_address, |
| 691 | &ppp->realm_framed_ip_netmask) != 0) |
| 692 | ppp->realm_framed_ip_address.s_addr = 0; |
| 693 | |
| 694 | do_default: |
| 695 | /* Use USER_SELECT if the realm doesn't specify the ip address */ |
| 696 | if (ppp->realm_framed_ip_address.s_addr == 0) |
| 697 | ppp->realm_framed_ip_address.s_addr = INADDR_USER_SELECT((__uint32_t)(__builtin_constant_p(0xFFFFFFFFL) ? (__uint32_t )(((__uint32_t)(0xFFFFFFFFL) & 0xff) << 24 | ((__uint32_t )(0xFFFFFFFFL) & 0xff00) << 8 | ((__uint32_t)(0xFFFFFFFFL ) & 0xff0000) >> 8 | ((__uint32_t)(0xFFFFFFFFL) & 0xff000000) >> 24) : __swap32md(0xFFFFFFFFL))); |
| 698 | |
| 699 | |
| 700 | if (ppp->realm_framed_ip_address.s_addr == INADDR_USER_SELECT((__uint32_t)(__builtin_constant_p(0xFFFFFFFFL) ? (__uint32_t )(((__uint32_t)(0xFFFFFFFFL) & 0xff) << 24 | ((__uint32_t )(0xFFFFFFFFL) & 0xff00) << 8 | ((__uint32_t)(0xFFFFFFFFL ) & 0xff0000) >> 8 | ((__uint32_t)(0xFFFFFFFFL) & 0xff000000) >> 24) : __swap32md(0xFFFFFFFFL)))) { |
| 701 | /* Use NAS_SELECT if USER_SELECT is not allowed by the config */ |
| 702 | if (!ppp_ipcp(ppp)((ppp)->pppd->iface[(ppp)->ifidx].ipcpconf)->allow_user_select) |
| 703 | ppp->realm_framed_ip_address.s_addr = INADDR_NAS_SELECT((__uint32_t)(__builtin_constant_p(0xFFFFFFFEL) ? (__uint32_t )(((__uint32_t)(0xFFFFFFFEL) & 0xff) << 24 | ((__uint32_t )(0xFFFFFFFEL) & 0xff00) << 8 | ((__uint32_t)(0xFFFFFFFEL ) & 0xff0000) >> 8 | ((__uint32_t)(0xFFFFFFFEL) & 0xff000000) >> 24) : __swap32md(0xFFFFFFFEL))); |
| 704 | } |
| 705 | NPPPD_DBG((LOG_DEBUG, "%s() = %s", __func__, |
| 706 | inet_ntoa(ppp->realm_framed_ip_address))); |
| 707 | |
| 708 | return &ppp->realm_framed_ip_address; |
| 709 | } |
| 710 | |
| 711 | /** XXX */ |
| 712 | int |
| 713 | npppd_check_calling_number(npppd *_this, npppd_ppp *ppp) |
| 714 | { |
| 715 | struct tunnconf *conf; |
| 716 | int lnumber, rval; |
| 717 | char number[NPPPD_PHONE_NUMBER_LEN32 + 1]; |
| 718 | |
| 719 | conf = ppp_get_tunnconf(ppp); |
| 720 | if (conf->callnum_check != 0) { |
| 721 | lnumber = sizeof(number); |
| 722 | if ((rval = npppd_auth_get_calling_number(ppp->realm, |
| 723 | ppp->username, number, &lnumber)) == 0) |
| 724 | return |
| 725 | (strcmp(number, ppp->calling_number) == 0)? 1 : 0; |
| 726 | if ((conf->callnum_check & NPPPD_CALLNUM_CHECK_STRICT1) != 0) |
| 727 | return 0; |
| 728 | } |
| 729 | |
| 730 | return 1; |
| 731 | } |
| 732 | |
| 733 | /** |
| 734 | * This function finds a {@link npppd_ppp} instance that is assigned the |
| 735 | * specified ip address and returns it |
| 736 | * @param ipaddr IP Address(Specify in network byte order) |
| 737 | */ |
| 738 | npppd_ppp * |
| 739 | npppd_get_ppp_by_ip(npppd *_this, struct in_addr ipaddr) |
| 740 | { |
| 741 | struct sockaddr_npppd *snp; |
| 742 | struct radish *rdp; |
| 743 | struct sockaddr_in npppd_get_ppp_by_ip_sin4; |
| 744 | |
| 745 | npppd_get_ppp_by_ip_sin4.sin_family = AF_INET2; |
| 746 | npppd_get_ppp_by_ip_sin4.sin_len = sizeof(struct sockaddr_in); |
| 747 | npppd_get_ppp_by_ip_sin4.sin_addr = ipaddr; |
| 748 | if (_this->rd == NULL((void *)0)) |
| 749 | return NULL((void *)0); /* no radix tree on startup */ |
| 750 | if (rd_match((struct sockaddr *)&npppd_get_ppp_by_ip_sin4, _this->rd, |
| 751 | &rdp)) { |
| 752 | snp = rdp->rd_rtent; |
| 753 | if (snp->snp_type == SNP_PPP3) |
| 754 | return snp->snp_data_ptr; |
| 755 | } |
| 756 | return NULL((void *)0); |
| 757 | } |
| 758 | |
| 759 | /** |
| 760 | * This function finds {@link npppd_ppp} instances that are authenticated |
| 761 | * as the specified username and returns them as a {@link slist} list. |
| 762 | * @param username PPP Username. |
| 763 | * @return {@link slist} that contains the {@link npppd_ppp} instances. |
| 764 | * NULL may be returned if no instance has been found. |
| 765 | */ |
| 766 | static slist * |
| 767 | npppd_get_ppp_by_user(npppd *_this, const char *username) |
| 768 | { |
| 769 | hash_link *hl; |
| 770 | |
| 771 | if ((hl = hash_lookup(_this->map_user_ppp, username)) != NULL((void *)0)) |
| 772 | return hl->item; |
| 773 | |
| 774 | return NULL((void *)0); |
| 775 | } |
| 776 | |
| 777 | /** |
| 778 | * This function finds a {@link npppd_ppp} instance that matches the specified |
| 779 | * ppp id and returns it. |
| 780 | * @param id {@link npppd_ppp#id ppp's id} |
| 781 | * @return This function returns the pointer if the instance which has |
| 782 | * specified ID is found, otherwise it returns NULL. |
| 783 | */ |
| 784 | npppd_ppp * |
| 785 | npppd_get_ppp_by_id(npppd *_this, u_int ppp_id) |
| 786 | { |
| 787 | slist users; |
| 788 | npppd_ppp *ppp0, *ppp; |
| 789 | |
| 790 | NPPPD_ASSERT(_this != NULL); |
| 791 | |
| 792 | ppp = NULL((void *)0); |
| 793 | slist_init(&users); |
| 794 | if (npppd_get_all_users(_this, &users) != 0) { |
| 795 | log_printf(LOG_WARNING4, |
| 796 | "npppd_get_all_users() failed in %s()", __func__); |
| 797 | } else { |
| 798 | /* FIXME: This linear search eats CPU. */ |
| 799 | for (slist_itr_first(&users); slist_itr_has_next(&users); ) { |
| 800 | ppp0 = slist_itr_next(&users); |
| 801 | if (ppp0->id == ppp_id) { |
| 802 | ppp = ppp0; |
| 803 | break; |
| 804 | } |
| 805 | } |
| 806 | } |
| 807 | slist_fini(&users); |
| 808 | |
| 809 | return ppp; |
| 810 | } |
| 811 | |
| 812 | static struct ipcpstat * |
| 813 | npppd_get_ipcp_stat(struct ipcpstat_head *head , const char *ipcp_name) |
| 814 | { |
| 815 | struct ipcpstat *ipcpstat = NULL((void *)0); |
| 816 | |
| 817 | LIST_FOREACH(ipcpstat, head, entry)for((ipcpstat) = ((head)->lh_first); (ipcpstat)!= ((void * )0); (ipcpstat) = ((ipcpstat)->entry.le_next)) { |
| 818 | if (strncmp(ipcpstat->name, ipcp_name, |
| 819 | sizeof(ipcpstat->name)) == 0) |
| 820 | return ipcpstat; |
| 821 | } |
| 822 | |
| 823 | return NULL((void *)0); |
| 824 | } |
| 825 | |
| 826 | static void |
| 827 | npppd_destroy_ipcp_stats(struct ipcpstat_head *head) |
| 828 | { |
| 829 | struct ipcpstat *ipcpstat, *tipcpstat; |
| 830 | npppd_ppp *ppp, *tppp; |
| 831 | |
| 832 | LIST_FOREACH_SAFE(ipcpstat, head, entry, tipcpstat)for ((ipcpstat) = ((head)->lh_first); (ipcpstat) && ((tipcpstat) = ((ipcpstat)->entry.le_next), 1); (ipcpstat ) = (tipcpstat)) { |
| 833 | LIST_FOREACH_SAFE(ppp, &ipcpstat->ppp, ipcpstat_entry, tppp)for ((ppp) = ((&ipcpstat->ppp)->lh_first); (ppp) && ((tppp) = ((ppp)->ipcpstat_entry.le_next), 1); (ppp) = (tppp )) { |
| 834 | ppp->ipcpstat = NULL((void *)0); |
| 835 | LIST_REMOVE(ppp, ipcpstat_entry)do { if ((ppp)->ipcpstat_entry.le_next != ((void *)0)) (ppp )->ipcpstat_entry.le_next->ipcpstat_entry.le_prev = (ppp )->ipcpstat_entry.le_prev; *(ppp)->ipcpstat_entry.le_prev = (ppp)->ipcpstat_entry.le_next; ; ; } while (0); |
| 836 | } |
| 837 | free(ipcpstat); |
| 838 | } |
| 839 | } |
| 840 | |
| 841 | static void |
| 842 | npppd_ipcp_stats_reload(npppd *_this) |
| 843 | { |
| 844 | struct ipcpstat *ipcpstat, *tipcpstat; |
| 845 | struct ipcpconf *ipcpconf; |
| 846 | struct ipcpstat_head destroy_list; |
| 847 | |
| 848 | LIST_INIT(&destroy_list)do { ((&destroy_list)->lh_first) = ((void *)0); } while (0); |
| 849 | LIST_FOREACH_SAFE(ipcpstat, &_this->ipcpstats, entry, tipcpstat)for ((ipcpstat) = ((&_this->ipcpstats)->lh_first); ( ipcpstat) && ((tipcpstat) = ((ipcpstat)->entry.le_next ), 1); (ipcpstat) = (tipcpstat)) { |
| 850 | LIST_REMOVE(ipcpstat, entry)do { if ((ipcpstat)->entry.le_next != ((void *)0)) (ipcpstat )->entry.le_next->entry.le_prev = (ipcpstat)->entry. le_prev; *(ipcpstat)->entry.le_prev = (ipcpstat)->entry .le_next; ; ; } while (0); |
| 851 | LIST_INSERT_HEAD(&destroy_list, ipcpstat, entry)do { if (((ipcpstat)->entry.le_next = (&destroy_list)-> lh_first) != ((void *)0)) (&destroy_list)->lh_first-> entry.le_prev = &(ipcpstat)->entry.le_next; (&destroy_list )->lh_first = (ipcpstat); (ipcpstat)->entry.le_prev = & (&destroy_list)->lh_first; } while (0); |
| 852 | } |
| 853 | |
| 854 | TAILQ_FOREACH(ipcpconf, &_this->conf.ipcpconfs, entry)for((ipcpconf) = ((&_this->conf.ipcpconfs)->tqh_first ); (ipcpconf) != ((void *)0); (ipcpconf) = ((ipcpconf)->entry .tqe_next)) { |
| 855 | ipcpstat = npppd_get_ipcp_stat(&destroy_list, ipcpconf->name); |
| 856 | if (ipcpstat != NULL((void *)0)) { |
| 857 | LIST_REMOVE(ipcpstat, entry)do { if ((ipcpstat)->entry.le_next != ((void *)0)) (ipcpstat )->entry.le_next->entry.le_prev = (ipcpstat)->entry. le_prev; *(ipcpstat)->entry.le_prev = (ipcpstat)->entry .le_next; ; ; } while (0); |
| 858 | LIST_INSERT_HEAD(&_this->ipcpstats, ipcpstat, entry)do { if (((ipcpstat)->entry.le_next = (&_this->ipcpstats )->lh_first) != ((void *)0)) (&_this->ipcpstats)-> lh_first->entry.le_prev = &(ipcpstat)->entry.le_next ; (&_this->ipcpstats)->lh_first = (ipcpstat); (ipcpstat )->entry.le_prev = &(&_this->ipcpstats)->lh_first ; } while (0); |
| 859 | continue; |
| 860 | } |
| 861 | |
| 862 | ipcpstat = malloc(sizeof(*ipcpstat)); |
| 863 | if (ipcpstat == NULL((void *)0)) { |
| 864 | log_printf(LOG_ERR3, "initializing ipcp_stats failed : %m"); |
| 865 | continue; |
| 866 | } |
| 867 | memset(ipcpstat, 0, sizeof(*ipcpstat)); |
| 868 | strlcpy(ipcpstat->name, ipcpconf->name, sizeof(ipcpconf->name)); |
| 869 | LIST_INSERT_HEAD(&_this->ipcpstats, ipcpstat, entry)do { if (((ipcpstat)->entry.le_next = (&_this->ipcpstats )->lh_first) != ((void *)0)) (&_this->ipcpstats)-> lh_first->entry.le_prev = &(ipcpstat)->entry.le_next ; (&_this->ipcpstats)->lh_first = (ipcpstat); (ipcpstat )->entry.le_prev = &(&_this->ipcpstats)->lh_first ; } while (0); |
| 870 | } |
| 871 | npppd_destroy_ipcp_stats(&destroy_list); |
| 872 | } |
| 873 | |
| 874 | /** |
| 875 | * Checks whether the user reaches the maximum session limit |
| 876 | * (user_max_serssion). |
| 877 | * @return This function returns 1(true) if the user does not reach the |
| 878 | * limit, otherwise it returns 0(false). |
| 879 | */ |
| 880 | int |
| 881 | npppd_check_user_max_session(npppd *_this, npppd_ppp *ppp) |
| 882 | { |
| 883 | int global_count, realm_count; |
| 884 | npppd_ppp *ppp1; |
| 885 | slist *uppp; |
| 886 | |
| 887 | /* user_max_session == 0 means unlimit */ |
| 888 | if (_this->conf.user_max_session == 0 && |
| 889 | npppd_auth_user_session_unlimited(ppp->realm)) |
| 890 | return 1; |
| 891 | |
| 892 | global_count = realm_count = 0; |
| 893 | if ((uppp = npppd_get_ppp_by_user(_this, ppp->username)) != NULL((void *)0)) { |
| 894 | for (slist_itr_first(uppp); slist_itr_has_next(uppp); ) { |
| 895 | ppp1 = slist_itr_next(uppp); |
| 896 | if (ppp->realm == ppp1->realm) |
| 897 | realm_count++; |
| 898 | global_count++; |
| 899 | } |
| 900 | } |
| 901 | |
| 902 | if (npppd_check_auth_user_max_session(ppp->realm, realm_count)) { |
| 903 | ppp_log(ppp, LOG_WARNING4, |
| 904 | "user %s exceeds user-max-session limit per auth", |
| 905 | ppp->username); |
| 906 | return 0; |
| 907 | } else if (_this->conf.user_max_session != 0 && |
| 908 | _this->conf.user_max_session <= global_count) { |
| 909 | ppp_log(ppp, LOG_WARNING4, |
| 910 | "user %s exceeds user-max-session limit", ppp->username); |
| 911 | return 0; |
| 912 | } else |
| 913 | return 1; |
| 914 | } |
| 915 | |
| 916 | /*********************************************************************** |
| 917 | * Network I/O ralated functions. |
| 918 | ***********************************************************************/ |
| 919 | /** |
| 920 | * Call this function to output packets to the network(tun). This function |
| 921 | * currently assumes the packet is a IPv4 datagram. |
| 922 | */ |
| 923 | void |
| 924 | npppd_network_output(npppd *_this, npppd_ppp *ppp, int proto, u_char *pktp, |
| 925 | int lpktp) |
| 926 | { |
| 927 | struct ip *pip; |
| 928 | int lbuf; |
| 929 | u_char buf[256]; /* enough size for TCP/IP header */ |
| 930 | |
| 931 | NPPPD_ASSERT(ppp != NULL); |
| 932 | |
| 933 | if (!ppp_ip_assigned(ppp)(ppp->snp.sin4.sin_addr.s_addr != 0)) |
| 934 | return; |
| 935 | |
| 936 | if (lpktp < sizeof(struct ip)) { |
| 937 | ppp_log(ppp, LOG_DEBUG7, "Received IP packet is too small"); |
| 938 | return; |
| 939 | } |
| 940 | lbuf = MINIMUM(lpktp, sizeof(buf))(((lpktp) < (sizeof(buf))) ? (lpktp) : (sizeof(buf))); |
| 941 | if (!ALIGNED_POINTER(pktp, struct ip)1) { |
| 942 | memcpy(buf, pktp, lbuf); |
| 943 | pip = (struct ip *)buf; |
| 944 | } else { |
| 945 | pip = (struct ip *)pktp; |
| 946 | } |
| 947 | |
| 948 | if (ppp->ingress_filter != 0 && |
| 949 | (pip->ip_src.s_addr & ppp->ppp_framed_ip_netmasksnp.sin4mask.sin_addr.s_addr) |
| 950 | != (ppp->ppp_framed_ip_addresssnp.sin4.sin_addr.s_addr & |
| 951 | ppp->ppp_framed_ip_netmasksnp.sin4mask.sin_addr.s_addr)) { |
| 952 | char logbuf[80]; |
| 953 | strlcpy(logbuf, inet_ntoa(pip->ip_dst), sizeof(logbuf)); |
| 954 | ppp_log(ppp, LOG_INFO6, |
| 955 | "Drop packet by ingress filter. %s => %s", |
| 956 | inet_ntoa(pip->ip_src), logbuf); |
| 957 | |
| 958 | return; |
| 959 | } |
| 960 | if (ppp->timeout_sec > 0 && !ip_is_idle_packet(pip, lbuf)) |
| 961 | ppp_reset_idle_timeout(ppp); |
| 962 | |
| 963 | #ifndef NO_ADJUST_MSS |
| 964 | if (ppp->adjust_mss) { |
| 965 | if (lpktp == lbuf) { |
| 966 | /* |
| 967 | * We can assume the packet length is less than |
| 968 | * sizeof(buf). |
| 969 | */ |
| 970 | if (!ALIGNED_POINTER(pktp, struct ip)1) |
| 971 | pktp = buf; |
| 972 | adjust_tcp_mss(pktp, lpktp, MRU_IPMTU(ppp->peer_mru)(ppp->peer_mru)); |
| 973 | } |
| 974 | } |
| 975 | #endif |
| 976 | npppd_iface_write(ppp_iface(ppp)(&(ppp)->pppd->iface[(ppp)->ifidx]), ppp, proto, pktp, lpktp); |
| 977 | } |
| 978 | |
| 979 | #ifdef USE_NPPPD_PIPEX1 |
| 980 | /*********************************************************************** |
| 981 | * PIPEX related functions |
| 982 | ***********************************************************************/ |
| 983 | static void |
| 984 | pipex_setup_common(npppd_ppp *ppp, struct pipex_session_req *req) |
| 985 | { |
| 986 | memset(req, 0, sizeof(*req)); |
| 987 | if (psm_opt_is_accepted(&ppp->lcp, acfc)(((&ppp->lcp)->opt.acfc & 0x02) != 0)) |
| 988 | req->pr_ppp_flags |= PIPEX_PPP_ACFC_ENABLED0x0004; |
| 989 | if (psm_peer_opt_is_accepted(&ppp->lcp, acfc)(((&ppp->lcp)->opt.acfc & 0x20) != 0)) |
| 990 | req->pr_ppp_flags |= PIPEX_PPP_ACFC_ACCEPTED0x0001; |
| 991 | |
| 992 | if (psm_peer_opt_is_accepted(&ppp->lcp, pfc)(((&ppp->lcp)->opt.pfc & 0x20) != 0)) |
| 993 | req->pr_ppp_flags |= PIPEX_PPP_PFC_ACCEPTED0x0002; |
| 994 | if (psm_opt_is_accepted(&ppp->lcp, pfc)(((&ppp->lcp)->opt.pfc & 0x02) != 0)) |
| 995 | req->pr_ppp_flags |= PIPEX_PPP_PFC_ENABLED0x0008; |
| 996 | |
| 997 | if (ppp->has_acf != 0) |
| 998 | req->pr_ppp_flags |= PIPEX_PPP_HAS_ACF0x0080; |
| 999 | |
| 1000 | if (ppp->adjust_mss != 0) |
| 1001 | req->pr_ppp_flags |= PIPEX_PPP_ADJUST_TCPMSS0x0100; |
| 1002 | if (ppp->ingress_filter != 0) |
| 1003 | req->pr_ppp_flags |= PIPEX_PPP_INGRESS_FILTER0x0200; |
| 1004 | |
| 1005 | req->pr_ip_srcaddr = ppp->pppd->iface[0].ip4addr; |
| 1006 | req->pr_ip_address = ppp->ppp_framed_ip_addresssnp.sin4.sin_addr; |
| 1007 | req->pr_ip_netmask = ppp->ppp_framed_ip_netmasksnp.sin4mask.sin_addr; |
| 1008 | req->pr_peer_mru = ppp->peer_mru; |
| 1009 | req->pr_ppp_id = ppp->id; |
| 1010 | |
| 1011 | req->pr_timeout_sec = ppp->timeout_sec; |
| 1012 | |
| 1013 | #ifdef USE_NPPPD_MPPE1 |
| 1014 | req->pr_ccp_id = ppp->ccp.fsm.id; |
| 1015 | if (ppp->mppe.send.keybits > 0) { |
| 1016 | memcpy(req->pr_mppe_send.master_key, |
| 1017 | ppp->mppe.send.master_key, |
| 1018 | sizeof(req->pr_mppe_send.master_key)); |
| 1019 | req->pr_mppe_send.stateless = ppp->mppe.send.stateless; |
| 1020 | req->pr_mppe_send.keylenbits = ppp->mppe.send.keybits; |
| 1021 | req->pr_ppp_flags |= PIPEX_PPP_MPPE_ENABLED0x0020; |
| 1022 | } |
| 1023 | if (ppp->mppe.recv.keybits > 0) { |
| 1024 | memcpy(req->pr_mppe_recv.master_key, |
| 1025 | ppp->mppe.recv.master_key, |
| 1026 | sizeof(req->pr_mppe_recv.master_key)); |
| 1027 | req->pr_mppe_recv.stateless = ppp->mppe.recv.stateless; |
| 1028 | req->pr_mppe_recv.keylenbits = ppp->mppe.recv.keybits; |
| 1029 | req->pr_ppp_flags |= PIPEX_PPP_MPPE_ACCEPTED0x0010; |
| 1030 | } |
| 1031 | if (ppp->mppe.required) |
| 1032 | req->pr_ppp_flags |= PIPEX_PPP_MPPE_REQUIRED0x0040; |
| 1033 | #endif /* USE_NPPPD_MPPE */ |
| 1034 | } |
| 1035 | |
| 1036 | /** Enable PIPEX of the {@link npppd_ppp ppp} */ |
| 1037 | int |
| 1038 | npppd_ppp_pipex_enable(npppd *_this, npppd_ppp *ppp) |
| 1039 | { |
| 1040 | struct pipex_session_req req; |
| 1041 | #ifdef USE_NPPPD_PPPOE1 |
| 1042 | pppoe_session *pppoe; |
| 1043 | #endif |
| 1044 | #ifdef USE_NPPPD_PPTP1 |
| 1045 | pptp_call *call; |
| 1046 | #endif |
| 1047 | #ifdef USE_NPPPD_L2TP1 |
| 1048 | l2tp_call *l2tp; |
| 1049 | l2tp_ctrl *l2tpctrl; |
| 1050 | #endif |
| 1051 | int error; |
| 1052 | |
| 1053 | NPPPD_ASSERT(ppp != NULL); |
| 1054 | NPPPD_ASSERT(ppp->phy_context != NULL); |
| 1055 | NPPPD_ASSERT(ppp->use_pipex != 0); |
| 1056 | |
| 1057 | pipex_setup_common(ppp, &req); |
| 1058 | |
| 1059 | switch (ppp->tunnel_type) { |
| 1060 | #ifdef USE_NPPPD_PPPOE1 |
| 1061 | case NPPPD_TUNNEL_PPPOE3: |
| 1062 | { |
| 1063 | struct sockaddr *sa; |
| 1064 | struct ether_header *eh; |
| 1065 | pppoe = (pppoe_session *)ppp->phy_context; |
| 1066 | |
| 1067 | /* PPPoE specific information */ |
| 1068 | req.pr_protocol = PIPEX_PROTO_PPPOE3; |
| 1069 | req.pr_session_id = pppoe->session_id; |
| 1070 | req.pr_peer_session_id = 0; |
| 1071 | strlcpy(req.pr_proto.pppoe.over_ifname, |
| 1072 | pppoe_session_listen_ifname(pppoe)((pppoed_listener *)slist_get(&(pppoe)->pppoed->listener , (pppoe)->listener_index))->listen_ifname, |
| 1073 | sizeof(req.pr_proto.pppoe.over_ifname)); |
| 1074 | |
| 1075 | sa = (struct sockaddr *)&req.pr_peer_address; |
| 1076 | sa->sa_family = AF_UNSPEC0; |
| 1077 | sa->sa_len = sizeof(struct sockaddr); |
| 1078 | |
| 1079 | eh = (struct ether_header *)sa->sa_data; |
| 1080 | eh->ether_type = htons(ETHERTYPE_PPPOE)(__uint16_t)(__builtin_constant_p(0x8864) ? (__uint16_t)(((__uint16_t )(0x8864) & 0xffU) << 8 | ((__uint16_t)(0x8864) & 0xff00U) >> 8) : __swap16md(0x8864)); |
| 1081 | memcpy(eh->ether_dhost, pppoe->ether_addr, ETHER_ADDR_LEN6); |
| 1082 | memset(eh->ether_shost, 0, ETHER_ADDR_LEN6); |
| 1083 | |
| 1084 | break; |
| 1085 | } |
| 1086 | #endif |
| 1087 | #ifdef USE_NPPPD_PPTP1 |
| 1088 | case NPPPD_TUNNEL_PPTP2: |
| 1089 | call = (pptp_call *)ppp->phy_context; |
| 1090 | |
| 1091 | /* PPTP specific information */ |
| 1092 | req.pr_session_id = call->id; |
| 1093 | req.pr_protocol = PIPEX_PROTO_PPTP2; |
| 1094 | |
| 1095 | req.pr_peer_session_id = call->peers_call_id; |
| 1096 | req.pr_proto.pptp.snd_nxt = call->snd_nxt; |
| 1097 | req.pr_proto.pptp.snd_una = call->snd_una; |
| 1098 | req.pr_proto.pptp.rcv_nxt = call->rcv_nxt; |
| 1099 | req.pr_proto.pptp.rcv_acked = call->rcv_acked; |
| 1100 | req.pr_proto.pptp.winsz = call->winsz; |
| 1101 | req.pr_proto.pptp.maxwinsz = call->maxwinsz; |
| 1102 | req.pr_proto.pptp.peer_maxwinsz = call->peers_maxwinsz; |
| 1103 | |
| 1104 | NPPPD_ASSERT(call->ctrl->peer.ss_family == AF_INET); |
| 1105 | NPPPD_ASSERT(call->ctrl->our.ss_family == AF_INET); |
| 1106 | |
| 1107 | memcpy(&req.pr_peer_address, &call->ctrl->peer, |
| 1108 | call->ctrl->peer.ss_len); |
| 1109 | memcpy(&req.pr_local_address, &call->ctrl->our, |
| 1110 | call->ctrl->our.ss_len); |
| 1111 | break; |
| 1112 | #endif |
| 1113 | #ifdef USE_NPPPD_L2TP1 |
| 1114 | case NPPPD_TUNNEL_L2TP1: |
| 1115 | l2tp = (l2tp_call *)ppp->phy_context; |
| 1116 | l2tpctrl = l2tp->ctrl; |
| 1117 | |
| 1118 | /* L2TPv2 specific context */ |
| 1119 | /* Session KEYS */ |
| 1120 | req.pr_protocol = PIPEX_PROTO_L2TP1; |
| 1121 | req.pr_proto.l2tp.tunnel_id = l2tpctrl->tunnel_id; |
| 1122 | req.pr_proto.l2tp.peer_tunnel_id = l2tpctrl->peer_tunnel_id; |
| 1123 | req.pr_session_id = l2tp->session_id; |
| 1124 | req.pr_peer_session_id = l2tp->peer_session_id; |
| 1125 | |
| 1126 | if (l2tpctrl->data_use_seq) |
| 1127 | req.pr_proto.l2tp.option_flags |= |
| 1128 | PIPEX_L2TP_USE_SEQUENCING0x00000001; |
| 1129 | |
| 1130 | /* transmission control contexts */ |
| 1131 | req.pr_proto.l2tp.ns_nxt = l2tp->snd_nxt; |
| 1132 | req.pr_proto.l2tp.nr_nxt = l2tp->rcv_nxt; |
| 1133 | |
| 1134 | memcpy(&req.pr_peer_address, &l2tpctrl->peer, |
| 1135 | l2tpctrl->peer.ss_len); |
| 1136 | memcpy(&req.pr_local_address, &l2tpctrl->sock, |
| 1137 | l2tpctrl->sock.ss_len); |
| 1138 | #ifdef USE_SA_COOKIE1 |
| 1139 | if (l2tpctrl->sa_cookie != NULL((void *)0)) { |
| 1140 | req.pr_proto.l2tp.ipsecflowinfo = |
| 1141 | ((struct in_ipsec_sa_cookie *)l2tpctrl->sa_cookie) |
| 1142 | ->ipsecflow; |
| 1143 | } |
| 1144 | #endif |
| 1145 | break; |
| 1146 | #endif |
| 1147 | default: |
| 1148 | return 1; |
| 1149 | } |
| 1150 | |
| 1151 | if ((error = ioctl(_this->iface[ppp->ifidx].devf, PIPEXASESSION((unsigned long)0x80000000 | ((sizeof(struct pipex_session_req ) & 0x1fff) << 16) | ((('p')) << 8) | ((3))), &req)) |
| 1152 | != 0) { |
| 1153 | if (errno(*__errno()) == ENXIO6) /* pipex is disabled on runtime */ |
| 1154 | error = 0; |
| 1155 | ppp->pipex_enabled = 0; |
| 1156 | return error; |
| 1157 | } |
| 1158 | |
| 1159 | if (_this->iface[ppp->ifidx].using_pppx) { |
| 1160 | struct pipex_session_descr_req descr_req; |
| 1161 | |
| 1162 | descr_req.pdr_protocol = req.pr_protocol; |
| 1163 | descr_req.pdr_session_id = req.pr_session_id; |
| 1164 | memset(descr_req.pdr_descr, 0, sizeof(descr_req.pdr_descr)); |
| 1165 | strlcpy(descr_req.pdr_descr, ppp->username, sizeof(descr_req.pdr_descr)); |
| 1166 | error = ioctl(_this->iface[ppp->ifidx].devf, PIPEXSIFDESCR((unsigned long)0x80000000 | ((sizeof(struct pipex_session_descr_req ) & 0x1fff) << 16) | ((('p')) << 8) | ((8))), &descr_req); |
| 1167 | if (error != 0) { |
| 1168 | log_printf(LOG_WARNING4, "PIPEXSIFDESCR(%s) failed: %d\n", ppp->username, error); |
| 1169 | } |
| 1170 | } |
| 1171 | |
| 1172 | ppp->pipex_enabled = 1; |
| 1173 | if (ppp->timeout_sec > 0) { |
| 1174 | /* Stop the npppd's idle-timer. We use pipex's idle-timer */ |
| 1175 | ppp->timeout_sec = 0; |
| 1176 | ppp_reset_idle_timeout(ppp); |
| 1177 | } |
| 1178 | |
| 1179 | return error; |
| 1180 | } |
| 1181 | |
| 1182 | /** Disable PIPEX of the {@link npppd_ppp ppp} */ |
| 1183 | int |
| 1184 | npppd_ppp_pipex_disable(npppd *_this, npppd_ppp *ppp) |
| 1185 | { |
| 1186 | struct pipex_session_close_req req; |
| 1187 | #ifdef USE_NPPPD_PPPOE1 |
| 1188 | pppoe_session *pppoe; |
| 1189 | #endif |
| 1190 | #ifdef USE_NPPPD_PPTP1 |
| 1191 | pptp_call *call; |
| 1192 | #endif |
| 1193 | #ifdef USE_NPPPD_L2TP1 |
| 1194 | l2tp_call *l2tp; |
| 1195 | #endif |
| 1196 | int error; |
| 1197 | |
| 1198 | if (ppp->pipex_started == 0) |
| 1199 | return 0; /* not started */ |
| 1200 | |
| 1201 | bzero(&req, sizeof(req)); |
| 1202 | switch(ppp->tunnel_type) { |
| 1203 | #ifdef USE_NPPPD_PPPOE1 |
| 1204 | case NPPPD_TUNNEL_PPPOE3: |
| 1205 | pppoe = (pppoe_session *)ppp->phy_context; |
| 1206 | |
| 1207 | /* PPPoE specific information */ |
| 1208 | req.pcr_protocolpsr_protocol = PIPEX_PROTO_PPPOE3; |
| 1209 | req.pcr_session_idpsr_session_id = pppoe->session_id; |
| 1210 | break; |
| 1211 | #endif |
| 1212 | #ifdef USE_NPPPD_PPTP1 |
| 1213 | case NPPPD_TUNNEL_PPTP2: |
| 1214 | call = (pptp_call *)ppp->phy_context; |
| 1215 | |
| 1216 | /* PPTP specific information */ |
| 1217 | req.pcr_session_idpsr_session_id = call->id; |
| 1218 | req.pcr_protocolpsr_protocol = PIPEX_PROTO_PPTP2; |
| 1219 | break; |
| 1220 | #endif |
| 1221 | #ifdef USE_NPPPD_L2TP1 |
| 1222 | case NPPPD_TUNNEL_L2TP1: |
| 1223 | l2tp = (l2tp_call *)ppp->phy_context; |
| 1224 | |
| 1225 | /* L2TP specific context */ |
| 1226 | req.pcr_session_idpsr_session_id = l2tp->session_id; |
| 1227 | req.pcr_protocolpsr_protocol = PIPEX_PROTO_L2TP1; |
| 1228 | break; |
| 1229 | #endif |
| 1230 | default: |
| 1231 | return 1; |
| 1232 | } |
| 1233 | |
| 1234 | error = ioctl(_this->iface[ppp->ifidx].devf, PIPEXDSESSION(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof (struct pipex_session_close_req) & 0x1fff) << 16) | ((('p')) << 8) | ((4))), &req); |
| 1235 | if (error == 0) { |
| 1236 | ppp->ipackets += req.pcr_statpsr_stat.ipackets; |
| 1237 | ppp->opackets += req.pcr_statpsr_stat.opackets; |
| 1238 | ppp->ierrors += req.pcr_statpsr_stat.ierrors; |
| 1239 | ppp->oerrors += req.pcr_statpsr_stat.oerrors; |
| 1240 | ppp->ibytes += req.pcr_statpsr_stat.ibytes; |
| 1241 | ppp->obytes += req.pcr_statpsr_stat.obytes; |
| 1242 | ppp->pipex_enabled = 0; |
| 1243 | } |
| 1244 | |
| 1245 | return error; |
| 1246 | } |
| 1247 | |
| 1248 | static void |
| 1249 | pipex_periodic(npppd *_this) |
| 1250 | { |
| 1251 | struct pipex_session_list_req req; |
| 1252 | npppd_ppp *ppp; |
| 1253 | int i, devf, error; |
| 1254 | u_int ppp_id; |
| 1255 | slist dlist, users; |
| 1256 | |
| 1257 | slist_init(&dlist); |
| 1258 | slist_init(&users); |
| 1259 | |
| 1260 | devf = -1; |
| 1261 | for (i = 0; i < nitems(_this->iface)(sizeof((_this->iface)) / sizeof((_this->iface)[0])); i++) { |
| 1262 | if (_this->iface[i].initialized != 0) { |
| 1263 | devf = _this->iface[i].devf; |
| 1264 | break; |
| 1265 | } |
| 1266 | } |
| 1267 | if (devf >= 0) { |
| 1268 | do { |
| 1269 | error = ioctl(devf, PIPEXGCLOSED((unsigned long)0x40000000 | ((sizeof(struct pipex_session_list_req ) & 0x1fff) << 16) | ((('p')) << 8) | ((7))), &req); |
| 1270 | if (error) { |
| 1271 | if (errno(*__errno()) != ENXIO6) |
| 1272 | log_printf(LOG_WARNING4, |
| 1273 | "PIPEXGCLOSED failed: %m"); |
| 1274 | break; |
| 1275 | } |
| 1276 | for (i = 0; i < req.plr_ppp_id_count; i++) { |
| 1277 | ppp_id = req.plr_ppp_id[i]; |
| 1278 | slist_add(&dlist, (void *)(uintptr_t)ppp_id); |
| 1279 | } |
| 1280 | } while (req.plr_flags & PIPEX_LISTREQ_MORE0x01); |
| 1281 | } |
| 1282 | |
| 1283 | if (slist_length(&dlist) <= 0) |
| 1284 | goto pipex_done; |
| 1285 | if (npppd_get_all_users(_this, &users) != 0) { |
| 1286 | log_printf(LOG_WARNING4, |
| 1287 | "npppd_get_all_users() failed in %s()", __func__); |
| 1288 | slist_fini(&users); |
| 1289 | goto pipex_done; |
| 1290 | } |
| 1291 | |
| 1292 | /* Disconnect request */ |
| 1293 | slist_itr_first(&dlist); |
| 1294 | while (slist_itr_has_next(&dlist)) { |
| 1295 | /* FIXME: Linear search by PPP Id eats CPU */ |
| 1296 | ppp_id = (uintptr_t)slist_itr_next(&dlist); |
| 1297 | slist_itr_first(&users); |
| 1298 | ppp = NULL((void *)0); |
| 1299 | while (slist_itr_has_next(&users)) { |
| 1300 | ppp = slist_itr_next(&users); |
| 1301 | if (ppp_id == ppp->id) { |
| 1302 | /* found */ |
| 1303 | slist_itr_remove(&users); |
| 1304 | break; |
| 1305 | } |
| 1306 | ppp = NULL((void *)0); |
| 1307 | } |
| 1308 | if (ppp == NULL((void *)0)) { |
| 1309 | log_printf(LOG_WARNING4, |
| 1310 | "kernel requested a ppp down, but it's not found. " |
| 1311 | "ppp=%d", ppp_id); |
| 1312 | continue; |
| 1313 | } |
| 1314 | ppp_log(ppp, LOG_INFO6, "Stop requested by the kernel"); |
| 1315 | /* TODO: PIPEX doesn't return the disconnect reason */ |
| 1316 | #ifdef USE_NPPPD_RADIUS1 |
| 1317 | ppp_set_radius_terminate_cause(ppp, |
| 1318 | RADIUS_TERMNATE_CAUSE_IDLE_TIMEOUT4); |
| 1319 | #endif |
| 1320 | ppp_stop(ppp, NULL((void *)0)); |
| 1321 | } |
| 1322 | pipex_done: |
| 1323 | slist_fini(&users); |
| 1324 | slist_fini(&dlist); |
| 1325 | } |
| 1326 | #endif /* USE_NPPPD_PIPEX */ |
| 1327 | |
| 1328 | /*********************************************************************** |
| 1329 | * IP address assignment related functions |
| 1330 | ***********************************************************************/ |
| 1331 | /** Prepare to use IP */ |
| 1332 | int |
| 1333 | npppd_prepare_ip(npppd *_this, npppd_ppp *ppp) |
| 1334 | { |
| 1335 | |
| 1336 | if (ppp_ipcp(ppp)((ppp)->pppd->iface[(ppp)->ifidx].ipcpconf) == NULL((void *)0)) |
| 1337 | return 1; |
| 1338 | |
| 1339 | npppd_get_user_framed_ip_address(_this, ppp, ppp->username); |
| 1340 | |
| 1341 | if (npppd_iface_ip_is_ready(ppp_iface(ppp))(((&(ppp)->pppd->iface[(ppp)->ifidx]))->initialized != 0 && ((&(ppp)->pppd->iface[(ppp)->ifidx ]))->ip4addr.s_addr != ((u_int32_t)(0x00000000)))) |
| 1342 | ppp->ipcp.ip4_our = ppp_iface(ppp)(&(ppp)->pppd->iface[(ppp)->ifidx])->ip4addr; |
| 1343 | else if (npppd_iface_ip_is_ready(&_this->iface[0])((&_this->iface[0])->initialized != 0 && (& _this->iface[0])->ip4addr.s_addr != ((u_int32_t)(0x00000000 )))) |
| 1344 | ppp->ipcp.ip4_our = _this->iface[0].ip4addr; |
| 1345 | else |
| 1346 | return -1; |
| 1347 | ppp->ipcp.dns_pri = ppp_ipcp(ppp)((ppp)->pppd->iface[(ppp)->ifidx].ipcpconf)->dns_servers[0]; |
| 1348 | ppp->ipcp.dns_sec = ppp_ipcp(ppp)((ppp)->pppd->iface[(ppp)->ifidx].ipcpconf)->dns_servers[1]; |
| 1349 | ppp->ipcp.nbns_pri = ppp_ipcp(ppp)((ppp)->pppd->iface[(ppp)->ifidx].ipcpconf)->nbns_servers[0]; |
| 1350 | ppp->ipcp.nbns_sec = ppp_ipcp(ppp)((ppp)->pppd->iface[(ppp)->ifidx].ipcpconf)->nbns_servers[1]; |
| 1351 | |
| 1352 | return 0; |
| 1353 | } |
| 1354 | |
| 1355 | /** Notify stop using IP to npppd and release the resources. */ |
| 1356 | void |
| 1357 | npppd_release_ip(npppd *_this, npppd_ppp *ppp) |
| 1358 | { |
| 1359 | |
| 1360 | if (!ppp_ip_assigned(ppp)(ppp->snp.sin4.sin_addr.s_addr != 0)) |
| 1361 | return; |
| 1362 | |
| 1363 | npppd_set_ip_enabled(_this, ppp, 0); |
| 1364 | npppd_pool_release_ip(ppp->assigned_pool, ppp); |
| 1365 | ppp->assigned_pool = NULL((void *)0); |
| 1366 | ppp->ppp_framed_ip_addresssnp.sin4.sin_addr.s_addr = 0; |
| 1367 | } |
| 1368 | |
| 1369 | /** |
| 1370 | * Change IP enableness. When the enableness is change, npppd will operate |
| 1371 | * the route entry. |
| 1372 | */ |
| 1373 | void |
| 1374 | npppd_set_ip_enabled(npppd *_this, npppd_ppp *ppp, int enabled) |
| 1375 | { |
| 1376 | int was_enabled, found; |
| 1377 | slist *u; |
| 1378 | hash_link *hl; |
| 1379 | npppd_ppp *ppp1; |
| 1380 | |
| 1381 | NPPPD_ASSERT(ppp_ip_assigned(ppp)); |
| 1382 | NPPPD_DBG((LOG_DEBUG, |
| 1383 | "npppd_set_ip_enabled(%s/%s, %s)", ppp->username, |
| 1384 | inet_ntoa(ppp->ppp_framed_ip_address), |
| 1385 | (enabled)?"true" : "false")); |
| 1386 | |
| 1387 | /* |
| 1388 | * Don't do anything if the enableness is not change. Changing route |
| 1389 | * makes many programs will wake up and do heavy operations, it causes |
| 1390 | * system overload, so we refrain useless changing route. |
| 1391 | */ |
| 1392 | enabled = (enabled)? 1 : 0; |
| 1393 | was_enabled = (ppp->assigned_ip4_enabled != 0)? 1 : 0; |
| 1394 | if (enabled == was_enabled) |
| 1395 | return; |
| 1396 | |
| 1397 | ppp->assigned_ip4_enabled = enabled; |
| 1398 | if (enabled) { |
| 1399 | if (ppp->username[0] != '\0') { |
| 1400 | if ((u = npppd_get_ppp_by_user(_this, ppp->username)) |
| 1401 | == NULL((void *)0)) { |
| 1402 | if ((u = malloc(sizeof(slist))) == NULL((void *)0)) { |
| 1403 | ppp_log(ppp, LOG_ERR3, |
| 1404 | "Out of memory on %s: %m", |
| 1405 | __func__); |
| 1406 | } else { |
| 1407 | slist_init(u); |
| 1408 | slist_set_size(u, 4); |
| 1409 | hash_insert(_this->map_user_ppp, |
| 1410 | ppp->username, u); |
| 1411 | NPPPD_DBG((LOG_DEBUG, |
| 1412 | "hash_insert(user->ppp, %s)", |
| 1413 | ppp->username)); |
| 1414 | } |
| 1415 | } |
| 1416 | if (u != NULL((void *)0)) /* above malloc() may failed */ |
| 1417 | slist_add(u, ppp); |
| 1418 | } |
| 1419 | |
| 1420 | #ifndef NO_ROUTE_FOR_POOLED_ADDRESS |
| 1421 | if (_this->iface[ppp->ifidx].using_pppx == 0) { |
| 1422 | if (ppp->snp.snp_next != NULL((void *)0)) |
| 1423 | /* |
| 1424 | * There is a blackhole route that has same |
| 1425 | * address/mask. |
| 1426 | */ |
| 1427 | in_route_delete(&ppp->ppp_framed_ip_addresssnp.sin4.sin_addr, |
| 1428 | &ppp->ppp_framed_ip_netmasksnp.sin4mask.sin_addr, &loop, |
| 1429 | RTF_BLACKHOLE0x1000); |
| 1430 | /* See the comment for MRU_IPMTU() on ppp.h */ |
| 1431 | if (ppp->ppp_framed_ip_netmasksnp.sin4mask.sin_addr.s_addr == 0xffffffffL) { |
| 1432 | in_host_route_add(&ppp->ppp_framed_ip_addresssnp.sin4.sin_addr, |
| 1433 | &ppp_iface(ppp)(&(ppp)->pppd->iface[(ppp)->ifidx])->ip4addr, |
| 1434 | ppp_iface(ppp)(&(ppp)->pppd->iface[(ppp)->ifidx])->ifname, |
| 1435 | MRU_IPMTU(ppp->peer_mru)(ppp->peer_mru)); |
| 1436 | } else { |
| 1437 | in_route_add(&ppp->ppp_framed_ip_addresssnp.sin4.sin_addr, |
| 1438 | &ppp->ppp_framed_ip_netmasksnp.sin4mask.sin_addr, |
| 1439 | &ppp_iface(ppp)(&(ppp)->pppd->iface[(ppp)->ifidx])->ip4addr, |
| 1440 | ppp_iface(ppp)(&(ppp)->pppd->iface[(ppp)->ifidx])->ifname, 0, |
| 1441 | MRU_IPMTU(ppp->peer_mru)(ppp->peer_mru)); |
| 1442 | } |
| 1443 | } |
| 1444 | #endif |
| 1445 | } else { |
| 1446 | #ifndef NO_ROUTE_FOR_POOLED_ADDRESS |
| 1447 | if (_this->iface[ppp->ifidx].using_pppx == 0) { |
| 1448 | if (ppp->ppp_framed_ip_netmasksnp.sin4mask.sin_addr.s_addr == 0xffffffffL) { |
| 1449 | in_host_route_delete(&ppp->ppp_framed_ip_addresssnp.sin4.sin_addr, |
| 1450 | &ppp_iface(ppp)(&(ppp)->pppd->iface[(ppp)->ifidx])->ip4addr); |
| 1451 | } else { |
| 1452 | in_route_delete(&ppp->ppp_framed_ip_addresssnp.sin4.sin_addr, |
| 1453 | &ppp->ppp_framed_ip_netmasksnp.sin4mask.sin_addr, |
| 1454 | &ppp_iface(ppp)(&(ppp)->pppd->iface[(ppp)->ifidx])->ip4addr, 0); |
| 1455 | } |
| 1456 | if (ppp->snp.snp_next != NULL((void *)0)) |
| 1457 | /* |
| 1458 | * There is a blackhole route that has same |
| 1459 | * address/mask. |
| 1460 | */ |
| 1461 | in_route_add(&ppp->snp.snp_addrsin4.sin_addr, |
| 1462 | &ppp->snp.snp_masksin4mask.sin_addr, &loop, LOOPBACK_IFNAME"lo0", |
| 1463 | RTF_BLACKHOLE0x1000, 0); |
| 1464 | } |
| 1465 | #endif |
| 1466 | if (ppp->username[0] != '\0') { |
| 1467 | hl = hash_lookup(_this->map_user_ppp, ppp->username); |
| 1468 | NPPPD_ASSERT(hl != NULL); |
| 1469 | if (hl == NULL((void *)0)) { |
| 1470 | ppp_log(ppp, LOG_ERR3, |
| 1471 | "Unexpected error: cannot find user(%s) " |
| 1472 | "from user database", ppp->username); |
| 1473 | return; |
| 1474 | } |
| 1475 | found = 0; |
| 1476 | u = hl->item; |
| 1477 | for (slist_itr_first(u); slist_itr_has_next(u);) { |
| 1478 | ppp1 = slist_itr_next(u); |
| 1479 | if (ppp1 == ppp) { |
| 1480 | slist_itr_remove(u); |
| 1481 | found++; |
| 1482 | break; |
| 1483 | } |
| 1484 | } |
| 1485 | if (found == 0) { |
| 1486 | ppp_log(ppp, LOG_ERR3, |
| 1487 | "Unexpected error: PPP instance is " |
| 1488 | "not found in the user's list."); |
| 1489 | } |
| 1490 | NPPPD_ASSERT(found != 0); |
| 1491 | if (slist_length(u) <= 0) { |
| 1492 | /* The last PPP */ |
| 1493 | NPPPD_DBG((LOG_DEBUG, |
| 1494 | "hash_delete(user->ppp, %s)", |
| 1495 | ppp->username)); |
| 1496 | if (hash_delete(_this->map_user_ppp, |
| 1497 | ppp->username, 0) != 0) { |
| 1498 | ppp_log(ppp, LOG_ERR3, |
| 1499 | "Unexpected error: cannot delete " |
| 1500 | "user(%s) from user database", |
| 1501 | ppp->username); |
| 1502 | } |
| 1503 | slist_fini(u); |
| 1504 | free(u); |
| 1505 | } else { |
| 1506 | /* Replace the reference. */ |
| 1507 | ppp1 = slist_get(u, 0); |
| 1508 | hl->key = ppp1->username; |
| 1509 | } |
| 1510 | } |
| 1511 | } |
| 1512 | } |
| 1513 | |
| 1514 | /** |
| 1515 | * Assign the IP address. Returning "struct in_addr" is stored IP address |
| 1516 | * in network byte order. |
| 1517 | * @param req_ip4 IP address request to assign. If the address is used |
| 1518 | * already, this function will return fail. |
| 1519 | */ |
| 1520 | int |
| 1521 | npppd_assign_ip_addr(npppd *_this, npppd_ppp *ppp, uint32_t req_ip4) |
| 1522 | { |
| 1523 | uint32_t ip4, ip4mask; |
| 1524 | int dyna, rval, fallback_dyna; |
| 1525 | const char *reason = "out of the pool"; |
| 1526 | struct sockaddr_npppd *snp; |
| 1527 | npppd_pool *pool; |
| 1528 | npppd_auth_base *realm; |
| 1529 | |
| 1530 | NPPPD_DBG((LOG_DEBUG, "%s() assigned=%s", __func__, |
| 1531 | (ppp_ip_assigned(ppp))? "true" : "false")); |
| 1532 | if (ppp_ip_assigned(ppp)(ppp->snp.sin4.sin_addr.s_addr != 0)) |
| 1533 | return 0; |
| 1534 | |
| 1535 | ip4 = INADDR_ANY((u_int32_t)(0x00000000)); |
| 1536 | ip4mask = 0xffffffffL; |
| 1537 | realm = ppp->realm; |
| 1538 | dyna = 0; |
| 1539 | fallback_dyna = 0; |
| 1540 | pool = NULL((void *)0); |
| 1541 | |
| 1542 | if (ppp->realm_framed_ip_address.s_addr == INADDR_USER_SELECT((__uint32_t)(__builtin_constant_p(0xFFFFFFFFL) ? (__uint32_t )(((__uint32_t)(0xFFFFFFFFL) & 0xff) << 24 | ((__uint32_t )(0xFFFFFFFFL) & 0xff00) << 8 | ((__uint32_t)(0xFFFFFFFFL ) & 0xff0000) >> 8 | ((__uint32_t)(0xFFFFFFFFL) & 0xff000000) >> 24) : __swap32md(0xFFFFFFFFL)))) { |
| 1543 | if (req_ip4 == INADDR_ANY((u_int32_t)(0x00000000))) |
| 1544 | dyna = 1; |
| 1545 | } else if (ppp->realm_framed_ip_address.s_addr == INADDR_NAS_SELECT((__uint32_t)(__builtin_constant_p(0xFFFFFFFEL) ? (__uint32_t )(((__uint32_t)(0xFFFFFFFEL) & 0xff) << 24 | ((__uint32_t )(0xFFFFFFFEL) & 0xff00) << 8 | ((__uint32_t)(0xFFFFFFFEL ) & 0xff0000) >> 8 | ((__uint32_t)(0xFFFFFFFEL) & 0xff000000) >> 24) : __swap32md(0xFFFFFFFEL)))) { |
| 1546 | dyna = 1; |
| 1547 | } else { |
| 1548 | NPPPD_ASSERT(realm != NULL); |
| 1549 | fallback_dyna = 1; |
| 1550 | req_ip4 = ntohl(ppp->realm_framed_ip_address.s_addr)(__uint32_t)(__builtin_constant_p(ppp->realm_framed_ip_address .s_addr) ? (__uint32_t)(((__uint32_t)(ppp->realm_framed_ip_address .s_addr) & 0xff) << 24 | ((__uint32_t)(ppp->realm_framed_ip_address .s_addr) & 0xff00) << 8 | ((__uint32_t)(ppp->realm_framed_ip_address .s_addr) & 0xff0000) >> 8 | ((__uint32_t)(ppp->realm_framed_ip_address .s_addr) & 0xff000000) >> 24) : __swap32md(ppp-> realm_framed_ip_address.s_addr)); |
| 1551 | ip4mask = ntohl(ppp->realm_framed_ip_netmask.s_addr)(__uint32_t)(__builtin_constant_p(ppp->realm_framed_ip_netmask .s_addr) ? (__uint32_t)(((__uint32_t)(ppp->realm_framed_ip_netmask .s_addr) & 0xff) << 24 | ((__uint32_t)(ppp->realm_framed_ip_netmask .s_addr) & 0xff00) << 8 | ((__uint32_t)(ppp->realm_framed_ip_netmask .s_addr) & 0xff0000) >> 8 | ((__uint32_t)(ppp->realm_framed_ip_netmask .s_addr) & 0xff000000) >> 24) : __swap32md(ppp-> realm_framed_ip_netmask.s_addr)); |
| 1552 | } |
| 1553 | if (!dyna) { |
| 1554 | /* |
| 1555 | * Realm requires the fixed IP address, but the address |
| 1556 | * doesn't belong any address pool. Fallback to dynamic |
| 1557 | * assignment. |
| 1558 | */ |
| 1559 | pool = ppp_pool(ppp)((ppp)->pppd->iface_pool[(ppp)->ifidx]); |
| 1560 | rval = npppd_pool_get_assignability(pool, req_ip4, ip4mask, |
| 1561 | &snp); |
| 1562 | switch (rval) { |
| 1563 | case ADDRESS_OK0: |
| 1564 | if (snp->snp_type == SNP_POOL1) { |
| 1565 | /* |
| 1566 | * Fixed address pool can be used only if the |
| 1567 | * realm specified to use it. |
| 1568 | */ |
| 1569 | if (ppp->realm_framed_ip_address |
| 1570 | .s_addr != INADDR_USER_SELECT((__uint32_t)(__builtin_constant_p(0xFFFFFFFFL) ? (__uint32_t )(((__uint32_t)(0xFFFFFFFFL) & 0xff) << 24 | ((__uint32_t )(0xFFFFFFFFL) & 0xff00) << 8 | ((__uint32_t)(0xFFFFFFFFL ) & 0xff0000) >> 8 | ((__uint32_t)(0xFFFFFFFFL) & 0xff000000) >> 24) : __swap32md(0xFFFFFFFFL)))) |
| 1571 | ip4 = req_ip4; |
| 1572 | break; |
| 1573 | } |
| 1574 | ppp->assign_dynapool = 1; |
| 1575 | ip4 = req_ip4; |
| 1576 | break; |
| 1577 | case ADDRESS_RESERVED1: |
| 1578 | reason = "reserved"; |
| 1579 | break; |
| 1580 | case ADDRESS_OUT_OF_POOL4: |
| 1581 | reason = "out of the pool"; |
| 1582 | break; |
| 1583 | case ADDRESS_BUSY2: |
| 1584 | fallback_dyna = 0; |
| 1585 | reason = "busy"; |
| 1586 | break; |
| 1587 | default: |
| 1588 | case ADDRESS_INVALID3: |
| 1589 | fallback_dyna = 0; |
| 1590 | reason = "invalid"; |
| 1591 | break; |
| 1592 | } |
| 1593 | #define IP_4OCT(v)((0xff000000 & (v)) >> 24), ((0x00ff0000 & (v)) >> 16), ((0x0000ff00 & (v)) >> 8), (0x000000ff & (v)) ((0xff000000 & (v)) >> 24), ((0x00ff0000 & (v)) >> 16),\ |
| 1594 | ((0x0000ff00 & (v)) >> 8), (0x000000ff & (v)) |
| 1595 | if (ip4 == 0) { |
| 1596 | ppp_log(ppp, LOG_NOTICE5, |
| 1597 | "Requested IP address (%d.%d.%d.%d)/%d " |
| 1598 | "is %s", IP_4OCT(req_ip4)((0xff000000 & (req_ip4)) >> 24), ((0x00ff0000 & (req_ip4)) >> 16), ((0x0000ff00 & (req_ip4)) >> 8), (0x000000ff & (req_ip4)), |
| 1599 | netmask2prefixlen(ip4mask), reason); |
| 1600 | if (fallback_dyna) |
| 1601 | goto dyna_assign; |
| 1602 | return 1; |
| 1603 | } |
| 1604 | ppp->assigned_pool = pool; |
| 1605 | |
| 1606 | ppp->ppp_framed_ip_addresssnp.sin4.sin_addr.s_addr = htonl(ip4)(__uint32_t)(__builtin_constant_p(ip4) ? (__uint32_t)(((__uint32_t )(ip4) & 0xff) << 24 | ((__uint32_t)(ip4) & 0xff00 ) << 8 | ((__uint32_t)(ip4) & 0xff0000) >> 8 | ((__uint32_t)(ip4) & 0xff000000) >> 24) : __swap32md (ip4)); |
| 1607 | ppp->ppp_framed_ip_netmasksnp.sin4mask.sin_addr.s_addr = htonl(ip4mask)(__uint32_t)(__builtin_constant_p(ip4mask) ? (__uint32_t)(((__uint32_t )(ip4mask) & 0xff) << 24 | ((__uint32_t)(ip4mask) & 0xff00) << 8 | ((__uint32_t)(ip4mask) & 0xff0000) >> 8 | ((__uint32_t)(ip4mask) & 0xff000000) >> 24) : __swap32md (ip4mask)); |
| 1608 | ppp->acct_framed_ip_address = ppp->ppp_framed_ip_addresssnp.sin4.sin_addr; |
| 1609 | } else { |
| 1610 | dyna_assign: |
| 1611 | pool = ppp_pool(ppp)((ppp)->pppd->iface_pool[(ppp)->ifidx]); |
| 1612 | ip4 = npppd_pool_get_dynamic(pool, ppp); |
| 1613 | if (ip4 == 0) { |
| 1614 | ppp_log(ppp, LOG_NOTICE5, |
| 1615 | "No free address in the pool."); |
| 1616 | return 1; |
| 1617 | } |
| 1618 | ppp->assigned_pool = pool; |
| 1619 | ppp->assign_dynapool = 1; |
| 1620 | ppp->ppp_framed_ip_addresssnp.sin4.sin_addr.s_addr = htonl(ip4)(__uint32_t)(__builtin_constant_p(ip4) ? (__uint32_t)(((__uint32_t )(ip4) & 0xff) << 24 | ((__uint32_t)(ip4) & 0xff00 ) << 8 | ((__uint32_t)(ip4) & 0xff0000) >> 8 | ((__uint32_t)(ip4) & 0xff000000) >> 24) : __swap32md (ip4)); |
| 1621 | ppp->ppp_framed_ip_netmasksnp.sin4mask.sin_addr.s_addr = htonl(0xffffffffL)(__uint32_t)(__builtin_constant_p(0xffffffffL) ? (__uint32_t) (((__uint32_t)(0xffffffffL) & 0xff) << 24 | ((__uint32_t )(0xffffffffL) & 0xff00) << 8 | ((__uint32_t)(0xffffffffL ) & 0xff0000) >> 8 | ((__uint32_t)(0xffffffffL) & 0xff000000) >> 24) : __swap32md(0xffffffffL)); |
| 1622 | ppp->acct_framed_ip_address = ppp->ppp_framed_ip_addresssnp.sin4.sin_addr; |
| 1623 | } |
| 1624 | |
| 1625 | return npppd_pool_assign_ip(ppp->assigned_pool, ppp); |
| 1626 | } |
| 1627 | |
| 1628 | static void * |
| 1629 | rtlist_remove(slist *prtlist, struct radish *radish) |
| 1630 | { |
| 1631 | struct radish *r; |
| 1632 | |
| 1633 | slist_itr_first(prtlist); |
| 1634 | while (slist_itr_has_next(prtlist)) { |
| 1635 | r = slist_itr_next(prtlist); |
| 1636 | if (!sockaddr_npppd_match(radish->rd_route, r->rd_route) || |
| 1637 | !sockaddr_npppd_match(radish->rd_mask, r->rd_mask)) |
| 1638 | continue; |
| 1639 | |
| 1640 | return slist_itr_remove(prtlist); |
| 1641 | } |
| 1642 | |
| 1643 | return NULL((void *)0); |
| 1644 | } |
| 1645 | |
| 1646 | /** Set {@link ::npppd#rd the only radish of npppd} */ |
| 1647 | int |
| 1648 | npppd_set_radish(npppd *_this, void *radish_head) |
| 1649 | { |
| 1650 | int rval, delppp0, count; |
| 1651 | struct sockaddr_npppd *snp; |
| 1652 | struct radish *radish, *r; |
| 1653 | slist rtlist0, rtlist1, delppp; |
| 1654 | npppd_ppp *ppp; |
| 1655 | void *dummy; |
| 1656 | |
| 1657 | slist_init(&rtlist0); |
| 1658 | slist_init(&rtlist1); |
| 1659 | slist_init(&delppp); |
| 1660 | |
| 1661 | if (radish_head != NULL((void *)0)) { |
| 1662 | if (rd2slist(radish_head, &rtlist1) != 0) { |
| 1663 | log_printf(LOG_WARNING4, "rd2slist failed: %m"); |
| 1664 | goto fail; |
| 1665 | } |
| 1666 | } |
| 1667 | if (_this->rd != NULL((void *)0)) { |
| 1668 | if (rd2slist(_this->rd, &rtlist0) != 0) { |
| 1669 | log_printf(LOG_WARNING4, "rd2slist failed: %m"); |
| 1670 | goto fail; |
| 1671 | } |
| 1672 | } |
| 1673 | if (_this->rd != NULL((void *)0) && radish_head != NULL((void *)0)) { |
| 1674 | for (slist_itr_first(&rtlist0); slist_itr_has_next(&rtlist0);) { |
| 1675 | radish = slist_itr_next(&rtlist0); |
| 1676 | snp = radish->rd_rtent; |
| 1677 | /* |
| 1678 | * replace the pool address |
| 1679 | */ |
| 1680 | if (snp->snp_type == SNP_POOL1 || |
| 1681 | snp->snp_type == SNP_DYN_POOL2) { |
| 1682 | if (rd_lookup(radish->rd_route, radish->rd_mask, |
| 1683 | radish_head) == NULL((void *)0)) |
| 1684 | continue; |
| 1685 | /* don't add */ |
| 1686 | rtlist_remove(&rtlist1, radish); |
| 1687 | /* don't delete */ |
| 1688 | slist_itr_remove(&rtlist0); |
| 1689 | continue; |
| 1690 | } |
| 1691 | /* |
| 1692 | * handle the active PPP sessions. |
| 1693 | */ |
| 1694 | NPPPD_ASSERT(snp->snp_type == SNP_PPP); |
| 1695 | ppp = snp->snp_data_ptr; |
| 1696 | |
| 1697 | /* Don't delete the route of active PPP session */ |
| 1698 | slist_itr_remove(&rtlist0); |
| 1699 | |
| 1700 | /* clear information about old pool configuration */ |
| 1701 | snp->snp_next = NULL((void *)0); |
| 1702 | |
| 1703 | delppp0 = 0; |
| 1704 | if (!rd_match((struct sockaddr *)snp, radish_head, &r)){ |
| 1705 | /* |
| 1706 | * If the address doesn't belong the new pools, |
| 1707 | * add the PPP session to the deletion list. |
| 1708 | */ |
| 1709 | slist_add(&delppp, snp->snp_data_ptr); |
| 1710 | delppp0 = 1; |
| 1711 | } else { |
| 1712 | NPPPD_ASSERT( |
| 1713 | ((struct sockaddr_npppd *)r->rd_rtent) |
| 1714 | ->snp_type == SNP_POOL || |
| 1715 | ((struct sockaddr_npppd *)r->rd_rtent) |
| 1716 | ->snp_type == SNP_DYN_POOL); |
| 1717 | /* |
| 1718 | * If there is a pool entry that has same |
| 1719 | * address/mask, then make the RADISH entry a |
| 1720 | * list. Set SNP_PPP as the first in the list, |
| 1721 | * set current entry in snp->snp_next and |
| 1722 | * delete it. |
| 1723 | */ |
| 1724 | if (sockaddr_npppd_match( |
| 1725 | radish->rd_route, r->rd_route) && |
| 1726 | sockaddr_npppd_match( |
| 1727 | radish->rd_mask, r->rd_mask)) { |
| 1728 | /* |
| 1729 | * Releasing it, so remove it from the |
| 1730 | * new routing list. |
| 1731 | */ |
| 1732 | rtlist_remove(&rtlist1, radish); |
| 1733 | /* set as snp_snp_next */ |
| 1734 | snp->snp_next = r->rd_rtent; |
| 1735 | rval = rd_delete(r->rd_route, |
Value stored to 'rval' is never read | |
| 1736 | r->rd_mask, radish_head, &dummy); |
| 1737 | NPPPD_ASSERT(rval == 0); |
| 1738 | } |
| 1739 | } |
| 1740 | /* Register to the new radish */ |
| 1741 | rval = rd_insert(radish->rd_route, radish->rd_mask, |
| 1742 | radish_head, snp); |
| 1743 | if (rval != 0) { |
| 1744 | errno(*__errno()) = rval; |
| 1745 | ppp_log(((npppd_ppp *)snp->snp_data_ptr), |
| 1746 | LOG_ERR3, |
| 1747 | "Fatal error on %s, cannot continue " |
| 1748 | "this ppp session: %m", __func__); |
| 1749 | if (!delppp0) |
| 1750 | slist_add(&delppp, snp->snp_data_ptr); |
| 1751 | } |
| 1752 | } |
| 1753 | } |
| 1754 | count = 0; |
| 1755 | #ifndef NO_ROUTE_FOR_POOLED_ADDRESS |
| 1756 | if (_this->iface[0].using_pppx == 0) { |
| 1757 | for (slist_itr_first(&rtlist0); slist_itr_has_next(&rtlist0);) { |
| 1758 | radish = slist_itr_next(&rtlist0); |
| 1759 | in_route_delete(&SIN(radish->rd_route)((struct sockaddr_in *)(radish->rd_route))->sin_addr, |
| 1760 | &SIN(radish->rd_mask)((struct sockaddr_in *)(radish->rd_mask))->sin_addr, &loop, |
| 1761 | RTF_BLACKHOLE0x1000); |
| 1762 | count++; |
| 1763 | } |
| 1764 | if (count > 0) |
| 1765 | log_printf(LOG_INFO6, |
| 1766 | "Deleted %d routes for old pool addresses", count); |
| 1767 | |
| 1768 | count = 0; |
| 1769 | for (slist_itr_first(&rtlist1); slist_itr_has_next(&rtlist1);) { |
| 1770 | radish = slist_itr_next(&rtlist1); |
| 1771 | in_route_add(&(SIN(radish->rd_route)((struct sockaddr_in *)(radish->rd_route))->sin_addr), |
| 1772 | &SIN(radish->rd_mask)((struct sockaddr_in *)(radish->rd_mask))->sin_addr, &loop, |
| 1773 | LOOPBACK_IFNAME"lo0", RTF_BLACKHOLE0x1000, 0); |
| 1774 | count++; |
| 1775 | } |
| 1776 | if (count > 0) |
| 1777 | log_printf(LOG_INFO6, |
| 1778 | "Added %d routes for new pool addresses", |
| 1779 | count); |
| 1780 | } |
| 1781 | #endif |
| 1782 | slist_fini(&rtlist0); |
| 1783 | slist_fini(&rtlist1); |
| 1784 | |
| 1785 | if (_this->rd != NULL((void *)0)) { |
| 1786 | npppd_rd_walktree_delete(_this->rd); |
| 1787 | _this->rd = NULL((void *)0); |
| 1788 | } |
| 1789 | if (radish_head == NULL((void *)0)) |
| 1790 | npppd_get_all_users(_this, &delppp); |
| 1791 | _this->rd = radish_head; |
| 1792 | |
| 1793 | for (slist_itr_first(&delppp); slist_itr_has_next(&delppp);) { |
| 1794 | ppp = slist_itr_next(&delppp); |
| 1795 | ppp_log(ppp, LOG_NOTICE5, |
| 1796 | "stop. IP address of this ppp is out of the pool.: %s", |
| 1797 | inet_ntoa(ppp->ppp_framed_ip_addresssnp.sin4.sin_addr)); |
| 1798 | ppp_stop(ppp, NULL((void *)0)); |
| 1799 | } |
| 1800 | slist_fini(&delppp); |
| 1801 | |
| 1802 | return 0; |
| 1803 | fail: |
| 1804 | slist_fini(&rtlist0); |
| 1805 | slist_fini(&rtlist1); |
| 1806 | slist_fini(&delppp); |
| 1807 | |
| 1808 | return 1; |
| 1809 | } |
| 1810 | |
| 1811 | /** |
| 1812 | * This function stores all users to {@link slist} and returns them. |
| 1813 | * References to {@link ::npppd_ppp} will be stored in users. |
| 1814 | */ |
| 1815 | static int |
| 1816 | npppd_get_all_users(npppd *_this, slist *users) |
| 1817 | { |
| 1818 | int rval; |
| 1819 | struct radish *rd; |
| 1820 | struct sockaddr_npppd *snp; |
| 1821 | slist list; |
| 1822 | |
| 1823 | NPPPD_ASSERT(_this != NULL); |
| 1824 | |
| 1825 | slist_init(&list); |
| 1826 | if (_this->rd == NULL((void *)0)) |
| 1827 | return 0; |
| 1828 | rval = rd2slist(_this->rd, &list); |
| 1829 | if (rval != 0) |
| 1830 | return rval; |
| 1831 | |
| 1832 | for (slist_itr_first(&list); slist_itr_has_next(&list);) { |
| 1833 | rd = slist_itr_next(&list); |
| 1834 | snp = rd->rd_rtent; |
| 1835 | if (snp->snp_type == SNP_PPP3) { |
| 1836 | if (slist_add(users, snp->snp_data_ptr) == NULL((void *)0)) { |
| 1837 | log_printf(LOG_ERR3, |
| 1838 | "slist_add() failed in %s: %m", __func__); |
| 1839 | goto fail; |
| 1840 | } |
| 1841 | } |
| 1842 | } |
| 1843 | slist_fini(&list); |
| 1844 | |
| 1845 | return 0; |
| 1846 | fail: |
| 1847 | slist_fini(&list); |
| 1848 | |
| 1849 | return 1; |
| 1850 | } |
| 1851 | |
| 1852 | static int |
| 1853 | rd2slist_walk(struct radish *rd, void *list0) |
| 1854 | { |
| 1855 | slist *list = list0; |
| 1856 | void *r; |
| 1857 | |
| 1858 | r = slist_add(list, rd); |
| 1859 | if (r == NULL((void *)0)) |
| 1860 | return -1; |
| 1861 | return 0; |
| 1862 | } |
| 1863 | static int |
| 1864 | rd2slist(struct radish_head *h, slist *list) |
| 1865 | { |
| 1866 | return rd_walktree(h, rd2slist_walk, list); |
| 1867 | } |
| 1868 | |
| 1869 | static void |
| 1870 | npppd_reload0(npppd *_this) |
| 1871 | { |
| 1872 | int i; |
| 1873 | |
| 1874 | npppd_reload_config(_this); |
| 1875 | #ifdef USE_NPPPD_ARP |
| 1876 | arp_set_strictintfnetwork(npppd_config_str_equali(_this, "arpd.strictintfnetwork", "true", ARPD_STRICTINTFNETWORK_DEFAULT)); |
| 1877 | if (npppd_config_str_equali(_this, "arpd.enabled", "true", ARPD_DEFAULT) == 1) |
| 1878 | arp_sock_init(); |
| 1879 | else |
| 1880 | arp_sock_fini(); |
| 1881 | #endif |
| 1882 | npppd_modules_reload(_this); |
| 1883 | npppd_ifaces_load_config(_this); |
| 1884 | npppd_update_pool_reference(_this); |
| 1885 | npppd_auth_finalizer_periodic(_this); |
| 1886 | npppd_ipcp_stats_reload(_this); |
| 1887 | |
| 1888 | for (i = 0; i < countof(_this->iface)(sizeof(_this->iface) / sizeof((_this->iface)[0])); i++) { |
| 1889 | if (_this->iface[i].initialized != 0 && |
| 1890 | _this->iface[i].started == 0) |
| 1891 | npppd_iface_start(&_this->iface[i]); |
| 1892 | } |
| 1893 | } |
| 1894 | |
| 1895 | static void |
| 1896 | npppd_update_pool_reference(npppd *_this) |
| 1897 | { |
| 1898 | int i, j; |
| 1899 | /* update iface to pool reference */ |
| 1900 | for (i = 0; i < countof(_this->iface_pool)(sizeof(_this->iface_pool) / sizeof((_this->iface_pool) [0])); i++) { |
| 1901 | _this->iface_pool[i] = NULL((void *)0); |
| 1902 | if (_this->iface[i].initialized == 0) |
| 1903 | continue; |
| 1904 | if (_this->iface[i].ipcpconf == NULL((void *)0)) |
| 1905 | continue; /* no IPCP for this interface */ |
| 1906 | |
| 1907 | for (j = 0; j < countof(_this->pool)(sizeof(_this->pool) / sizeof((_this->pool)[0])); j++) { |
| 1908 | if (_this->pool[j].initialized == 0) |
| 1909 | continue; |
| 1910 | if (strcmp(_this->iface[i].ipcpconf->name, |
| 1911 | _this->pool[j].ipcp_name) == 0) { |
| 1912 | /* found the ipcp that has the pool */ |
| 1913 | _this->iface_pool[i] = &_this->pool[j]; |
| 1914 | break; |
| 1915 | } |
| 1916 | } |
| 1917 | } |
| 1918 | } |
| 1919 | |
| 1920 | /*********************************************************************** |
| 1921 | * Signal handlers |
| 1922 | ***********************************************************************/ |
| 1923 | static void |
| 1924 | npppd_on_sighup(int fd, short ev_type, void *ctx) |
| 1925 | { |
| 1926 | npppd *_this; |
| 1927 | |
| 1928 | _this = ctx; |
| 1929 | #ifndef NO_DELAYED_RELOAD |
| 1930 | if (_this->delayed_reload > 0) |
| 1931 | _this->reloading_count = _this->delayed_reload; |
| 1932 | else |
| 1933 | #endif |
| 1934 | npppd_reload0(_this); |
| 1935 | } |
| 1936 | |
| 1937 | static void |
| 1938 | npppd_on_sigterm(int fd, short ev_type, void *ctx) |
| 1939 | { |
| 1940 | npppd *_this; |
| 1941 | |
| 1942 | _this = ctx; |
| 1943 | npppd_stop(_this); |
| 1944 | } |
| 1945 | |
| 1946 | static void |
| 1947 | npppd_on_sigint(int fd, short ev_type, void *ctx) |
| 1948 | { |
| 1949 | npppd *_this; |
| 1950 | |
| 1951 | _this = ctx; |
| 1952 | npppd_stop(_this); |
| 1953 | } |
| 1954 | |
| 1955 | static void |
| 1956 | npppd_on_sigchld(int fd, short ev_type, void *ctx) |
| 1957 | { |
| 1958 | int status; |
| 1959 | pid_t wpid; |
| 1960 | npppd *_this; |
| 1961 | |
| 1962 | _this = ctx; |
| 1963 | wpid = privsep_priv_pid(); |
| 1964 | if (wait4(wpid, &status, WNOHANG0x01, NULL((void *)0)) == wpid) { |
| 1965 | if (WIFSIGNALED(status)(((status) & 0177) != 0177 && ((status) & 0177 ) != 0)) |
| 1966 | log_printf(LOG_WARNING4, |
| 1967 | "privileged process exits abnormally. signal=%d", |
| 1968 | WTERMSIG(status)(((status) & 0177))); |
| 1969 | else |
| 1970 | log_printf(LOG_WARNING4, |
| 1971 | "privileged process exits abnormally. status=%d", |
| 1972 | WEXITSTATUS(status)(int)(((unsigned)(status) >> 8) & 0xff)); |
| 1973 | _this->stop_by_error = 1; |
| 1974 | npppd_stop(_this); |
| 1975 | } |
| 1976 | } |
| 1977 | /*********************************************************************** |
| 1978 | * Miscellaneous functions |
| 1979 | ***********************************************************************/ |
| 1980 | static uint32_t |
| 1981 | str_hash(const void *ptr, int sz) |
| 1982 | { |
| 1983 | uint32_t hash = 0; |
| 1984 | int i, len; |
| 1985 | const char *str; |
| 1986 | |
| 1987 | str = ptr; |
| 1988 | len = strlen(str); |
| 1989 | for (i = 0; i < len; i++) |
| 1990 | hash = hash*0x1F + str[i]; |
| 1991 | hash = (hash << 16) ^ (hash & 0xffff); |
| 1992 | |
| 1993 | return hash % sz; |
| 1994 | } |
| 1995 | |
| 1996 | /** |
| 1997 | * Select a authentication realm that is for given {@link ::npppd_ppp PPP}. |
| 1998 | * Return 0 on success. |
| 1999 | */ |
| 2000 | int |
| 2001 | npppd_ppp_bind_realm(npppd *_this, npppd_ppp *ppp, const char *username, int |
| 2002 | eap_required) |
| 2003 | { |
| 2004 | struct confbind *bind; |
| 2005 | npppd_auth_base *realm = NULL((void *)0), *realm0 = NULL((void *)0), *realm1 = NULL((void *)0); |
| 2006 | char buf1[MAX_USERNAME_LENGTH256]; |
| 2007 | int lsuffix, lusername, lmax; |
| 2008 | |
| 2009 | NPPPD_ASSERT(_this != NULL); |
| 2010 | NPPPD_ASSERT(ppp != NULL); |
| 2011 | NPPPD_ASSERT(username != NULL); |
| 2012 | |
| 2013 | /* |
| 2014 | * If the PPP suffix is the longest, and the length of the suffix is |
| 2015 | * same, select the first one. |
| 2016 | */ |
| 2017 | lusername = strlen(username); |
| 2018 | lmax = -1; |
| 2019 | realm = NULL((void *)0); |
| 2020 | |
| 2021 | TAILQ_FOREACH(bind, &_this->conf.confbinds, entry)for((bind) = ((&_this->conf.confbinds)->tqh_first); (bind) != ((void *)0); (bind) = ((bind)->entry.tqe_next)) { |
| 2022 | if (strcmp(bind->tunnconf->name, ppp->phy_label) != 0) |
| 2023 | continue; |
| 2024 | |
| 2025 | realm0 = NULL((void *)0); |
| 2026 | slist_itr_first(&_this->realms); |
| 2027 | while (slist_itr_has_next(&_this->realms)) { |
| 2028 | realm1 = slist_itr_next(&_this->realms); |
| 2029 | if (!npppd_auth_is_usable(realm1)) |
| 2030 | continue; |
| 2031 | if (eap_required && !npppd_auth_is_eap_capable(realm1)) |
| 2032 | continue; |
| 2033 | if (strcmp(npppd_auth_get_name(realm1), |
| 2034 | bind->authconf->name) == 0) { |
| 2035 | realm0 = realm1; |
| 2036 | break; |
| 2037 | } |
| 2038 | } |
| 2039 | if (realm0 == NULL((void *)0)) |
| 2040 | continue; |
| 2041 | |
| 2042 | lsuffix = strlen(npppd_auth_get_suffix(realm0)); |
| 2043 | if (lsuffix > lmax && |
| 2044 | (lsuffix == 0 || |
| 2045 | (lsuffix < lusername && strcmp(username + lusername |
| 2046 | - lsuffix, npppd_auth_get_suffix(realm0)) |
| 2047 | == 0))) { |
| 2048 | lmax = lsuffix; |
| 2049 | realm = realm0; |
| 2050 | } |
| 2051 | } |
| 2052 | |
| 2053 | if (realm == NULL((void *)0)) { |
| 2054 | log_printf(LOG_INFO6, "user='%s' could not bind any realms", |
| 2055 | username); |
| 2056 | return 1; |
| 2057 | } |
| 2058 | NPPPD_DBG((LOG_DEBUG, "bind realm %s", npppd_auth_get_name(realm))); |
| 2059 | |
| 2060 | if (npppd_auth_get_type(realm) == NPPPD_AUTH_TYPE_LOCAL1) |
| 2061 | /* hook the auto reload */ |
| 2062 | npppd_auth_get_user_password(realm, |
| 2063 | npppd_auth_username_for_auth(realm1, username, buf1), NULL((void *)0), |
| 2064 | NULL((void *)0)); |
| 2065 | ppp->realm = realm; |
| 2066 | |
| 2067 | return 0; |
| 2068 | } |
| 2069 | |
| 2070 | /** Is assigned realm a LOCAL authentication? */ |
| 2071 | int |
| 2072 | npppd_ppp_is_realm_local(npppd *_this, npppd_ppp *ppp) |
| 2073 | { |
| 2074 | NPPPD_ASSERT(_this != NULL); |
| 2075 | NPPPD_ASSERT(ppp != NULL); |
| 2076 | |
| 2077 | if (ppp->realm == NULL((void *)0)) |
| 2078 | return 0; |
| 2079 | |
| 2080 | return (npppd_auth_get_type(ppp->realm) == NPPPD_AUTH_TYPE_LOCAL1) |
| 2081 | ? 1 : 0; |
| 2082 | } |
| 2083 | |
| 2084 | /** Is assigned realm a RADIUS authentication? */ |
| 2085 | int |
| 2086 | npppd_ppp_is_realm_radius(npppd *_this, npppd_ppp *ppp) |
| 2087 | { |
| 2088 | NPPPD_ASSERT(_this != NULL); |
| 2089 | NPPPD_ASSERT(ppp != NULL); |
| 2090 | |
| 2091 | if (ppp->realm == NULL((void *)0)) |
| 2092 | return 0; |
| 2093 | |
| 2094 | return (npppd_auth_get_type(ppp->realm) == NPPPD_AUTH_TYPE_RADIUS2) |
| 2095 | ? 1 : 0; |
| 2096 | } |
| 2097 | |
| 2098 | /** Is assigned realm usable? */ |
| 2099 | int |
| 2100 | npppd_ppp_is_realm_ready(npppd *_this, npppd_ppp *ppp) |
| 2101 | { |
| 2102 | if (ppp->realm == NULL((void *)0)) |
| 2103 | return 0; |
| 2104 | |
| 2105 | return npppd_auth_is_ready(ppp->realm); |
| 2106 | } |
| 2107 | |
| 2108 | /** Return the name of assigned realm */ |
| 2109 | const char * |
| 2110 | npppd_ppp_get_realm_name(npppd *_this, npppd_ppp *ppp) |
| 2111 | { |
| 2112 | if (ppp->realm == NULL((void *)0)) |
| 2113 | return "(none)"; |
| 2114 | return npppd_auth_get_name(ppp->realm); |
| 2115 | } |
| 2116 | |
| 2117 | /** Return the interface name that bound given {@link ::npppd_ppp PPP} */ |
| 2118 | const char * |
| 2119 | npppd_ppp_get_iface_name(npppd *_this, npppd_ppp *ppp) |
| 2120 | { |
| 2121 | if (ppp == NULL((void *)0) || ppp->ifidx < 0) |
| 2122 | return "(not binding)"; |
| 2123 | return ppp_iface(ppp)(&(ppp)->pppd->iface[(ppp)->ifidx])->ifname; |
| 2124 | } |
| 2125 | |
| 2126 | /** Is the interface usable? */ |
| 2127 | int |
| 2128 | npppd_ppp_iface_is_ready(npppd *_this, npppd_ppp *ppp) |
| 2129 | { |
| 2130 | return (npppd_iface_ip_is_ready(ppp_iface(ppp))(((&(ppp)->pppd->iface[(ppp)->ifidx]))->initialized != 0 && ((&(ppp)->pppd->iface[(ppp)->ifidx ]))->ip4addr.s_addr != ((u_int32_t)(0x00000000))) && |
| 2131 | ppp_ipcp(ppp)((ppp)->pppd->iface[(ppp)->ifidx].ipcpconf) != NULL((void *)0))? 1 : 0; |
| 2132 | } |
| 2133 | |
| 2134 | /** Select a suitable interface for {@link :npppd_ppp PPP} and bind them */ |
| 2135 | int |
| 2136 | npppd_ppp_bind_iface(npppd *_this, npppd_ppp *ppp) |
| 2137 | { |
| 2138 | int i, ifidx; |
| 2139 | struct confbind *bind; |
| 2140 | struct ipcpstat *ipcpstat; |
| 2141 | |
| 2142 | NPPPD_ASSERT(_this != NULL); |
| 2143 | NPPPD_ASSERT(ppp != NULL); |
| 2144 | |
| 2145 | if (ppp->ifidx >= 0) |
| 2146 | return 0; |
| 2147 | |
| 2148 | TAILQ_FOREACH(bind, &_this->conf.confbinds, entry)for((bind) = ((&_this->conf.confbinds)->tqh_first); (bind) != ((void *)0); (bind) = ((bind)->entry.tqe_next)) { |
| 2149 | if (strcmp(bind->tunnconf->name, ppp->phy_label) != 0) |
| 2150 | continue; |
| 2151 | if (ppp->realm == NULL((void *)0)) { |
| 2152 | if (bind->authconf == NULL((void *)0)) |
| 2153 | break; |
| 2154 | } else if (strcmp(bind->authconf->name, |
| 2155 | npppd_auth_get_name(ppp->realm)) == 0) |
| 2156 | break; |
| 2157 | } |
| 2158 | if (bind == NULL((void *)0)) |
| 2159 | return 1; |
| 2160 | |
| 2161 | /* Search a interface */ |
| 2162 | ifidx = -1; |
| 2163 | for (i = 0; i < countof(_this->iface)(sizeof(_this->iface) / sizeof((_this->iface)[0])); i++) { |
| 2164 | if (_this->iface[i].initialized == 0) |
| 2165 | continue; |
| 2166 | if (strcmp(_this->iface[i].ifname, bind->iface->name) == 0) |
| 2167 | ifidx = i; |
| 2168 | } |
| 2169 | if (ifidx < 0) |
| 2170 | return 1; |
| 2171 | |
| 2172 | ppp->ifidx = ifidx; |
| 2173 | NPPPD_ASSERT(ppp_ipcp(ppp) != NULL); |
| 2174 | ipcpstat = npppd_get_ipcp_stat(&_this->ipcpstats, ppp_ipcp(ppp)((ppp)->pppd->iface[(ppp)->ifidx].ipcpconf)->name); |
| 2175 | if (ipcpstat == NULL((void *)0)) { |
| 2176 | ppp_log(ppp, LOG_WARNING4, "Unknown IPCP %s", |
| 2177 | ppp_ipcp(ppp)((ppp)->pppd->iface[(ppp)->ifidx].ipcpconf)->name); |
| 2178 | ppp->ifidx = -1; /* unbind interface */ |
| 2179 | return 1; |
| 2180 | } |
| 2181 | if (ppp_ipcp(ppp)((ppp)->pppd->iface[(ppp)->ifidx].ipcpconf)->max_session > 0 && |
| 2182 | ipcpstat->nsession >= ppp_ipcp(ppp)((ppp)->pppd->iface[(ppp)->ifidx].ipcpconf)->max_session) { |
| 2183 | ppp_log(ppp, LOG_WARNING4, |
| 2184 | "Number of sessions per IPCP reaches out of the limit=%d", |
| 2185 | ppp_ipcp(ppp)((ppp)->pppd->iface[(ppp)->ifidx].ipcpconf)->max_session); |
| 2186 | ppp->ifidx = -1; /* unbind interface */ |
| 2187 | return 1; |
| 2188 | } |
| 2189 | |
| 2190 | if (_this->conf.max_session > 0 && |
| 2191 | _this->nsession >= _this->conf.max_session) { |
| 2192 | ppp_log(ppp, LOG_WARNING4, |
| 2193 | "Number of sessions reaches out of the limit=%d", |
| 2194 | _this->conf.max_session); |
| 2195 | ppp->ifidx = -1; /* unbind interface */ |
| 2196 | return 1; |
| 2197 | } |
| 2198 | _this->nsession++; |
| 2199 | |
| 2200 | LIST_INSERT_HEAD(&ipcpstat->ppp, ppp, ipcpstat_entry)do { if (((ppp)->ipcpstat_entry.le_next = (&ipcpstat-> ppp)->lh_first) != ((void *)0)) (&ipcpstat->ppp)-> lh_first->ipcpstat_entry.le_prev = &(ppp)->ipcpstat_entry .le_next; (&ipcpstat->ppp)->lh_first = (ppp); (ppp) ->ipcpstat_entry.le_prev = &(&ipcpstat->ppp)-> lh_first; } while (0); |
| 2201 | ppp->ipcpstat = ipcpstat; |
| 2202 | ipcpstat->nsession++; |
| 2203 | |
| 2204 | return 0; |
| 2205 | } |
| 2206 | |
| 2207 | /** Unbind the interface from the {@link ::npppd_ppp PPP} */ |
| 2208 | void |
| 2209 | npppd_ppp_unbind_iface(npppd *_this, npppd_ppp *ppp) |
| 2210 | { |
| 2211 | if (ppp->ifidx >= 0) { |
| 2212 | _this->nsession--; |
| 2213 | if (ppp->ipcpstat!= NULL((void *)0)) { |
| 2214 | ppp->ipcpstat->nsession--; |
| 2215 | LIST_REMOVE(ppp, ipcpstat_entry)do { if ((ppp)->ipcpstat_entry.le_next != ((void *)0)) (ppp )->ipcpstat_entry.le_next->ipcpstat_entry.le_prev = (ppp )->ipcpstat_entry.le_prev; *(ppp)->ipcpstat_entry.le_prev = (ppp)->ipcpstat_entry.le_next; ; ; } while (0); |
| 2216 | } |
| 2217 | } |
| 2218 | ppp->ifidx = -1; |
| 2219 | } |
| 2220 | |
| 2221 | static int |
| 2222 | npppd_rd_walktree_delete(struct radish_head *rh) |
| 2223 | { |
| 2224 | void *dummy; |
| 2225 | struct radish *rd; |
| 2226 | slist list; |
| 2227 | |
| 2228 | slist_init(&list); |
| 2229 | if (rd2slist(rh, &list) != 0) |
| 2230 | return 1; |
| 2231 | for (slist_itr_first(&list); slist_itr_has_next(&list);) { |
| 2232 | rd = slist_itr_next(&list); |
| 2233 | rd_delete(rd->rd_route, rd->rd_mask, rh, &dummy); |
| 2234 | } |
| 2235 | slist_fini(&list); |
| 2236 | |
| 2237 | free(rh); |
| 2238 | |
| 2239 | return 0; |
| 2240 | } |
| 2241 | |
| 2242 | #ifdef USE_NPPPD_RADIUS1 |
| 2243 | /** |
| 2244 | * Return radius_req_setting for the given {@link ::npppd_ppp PPP}. |
| 2245 | * @return return NULL if no usable RADIUS setting. |
| 2246 | */ |
| 2247 | void * |
| 2248 | npppd_get_radius_auth_setting(npppd *_this, npppd_ppp *ppp) |
| 2249 | { |
| 2250 | NPPPD_ASSERT(_this != NULL); |
| 2251 | NPPPD_ASSERT(ppp != NULL); |
| 2252 | |
| 2253 | if (ppp->realm == NULL((void *)0)) |
| 2254 | return NULL((void *)0); |
| 2255 | if (!npppd_ppp_is_realm_radius(_this, ppp)) |
| 2256 | return NULL((void *)0); |
| 2257 | |
| 2258 | return npppd_auth_radius_get_radius_auth_setting(ppp->realm); |
| 2259 | } |
| 2260 | #endif |
| 2261 | |
| 2262 | /** Finalize authentication realm */ |
| 2263 | static void |
| 2264 | npppd_auth_finalizer_periodic(npppd *_this) |
| 2265 | { |
| 2266 | int ndisposing = 0, refcnt; |
| 2267 | slist users; |
| 2268 | npppd_auth_base *auth_base; |
| 2269 | npppd_ppp *ppp; |
| 2270 | |
| 2271 | /* |
| 2272 | * For the realms with disposing flag, if the realm has assigned PPPs, |
| 2273 | * disconnect them. If all PPPs are disconnected then free the realm. |
| 2274 | */ |
| 2275 | NPPPD_DBG((DEBUG_LEVEL_2, "%s() called", __func__)); |
| 2276 | slist_itr_first(&_this->realms); |
| 2277 | while (slist_itr_has_next(&_this->realms)) { |
| 2278 | auth_base = slist_itr_next(&_this->realms); |
| 2279 | if (!npppd_auth_is_disposing(auth_base)) |
| 2280 | continue; |
| 2281 | refcnt = 0; |
| 2282 | if (ndisposing++ == 0) { |
| 2283 | slist_init(&users); |
| 2284 | if (npppd_get_all_users(_this, &users) != 0) { |
| 2285 | log_printf(LOG_WARNING4, |
| 2286 | "npppd_get_all_users() failed in %s(): %m", |
| 2287 | __func__); |
| 2288 | break; |
| 2289 | } |
| 2290 | } |
| 2291 | slist_itr_first(&users); |
| 2292 | while (slist_itr_has_next(&users)) { |
| 2293 | ppp = slist_itr_next(&users); |
| 2294 | if (ppp->realm == auth_base) { |
| 2295 | refcnt++; |
| 2296 | ppp_stop(ppp, NULL((void *)0)); |
| 2297 | ppp_log(ppp, LOG_INFO6, |
| 2298 | "Stop request by npppd. Binding " |
| 2299 | "authentication realm is disposing. " |
| 2300 | "realm=%s", npppd_auth_get_name(auth_base)); |
| 2301 | slist_itr_remove(&users); |
| 2302 | } |
| 2303 | } |
| 2304 | if (refcnt == 0) { |
| 2305 | npppd_auth_destroy(auth_base); |
| 2306 | slist_itr_remove(&_this->realms); |
| 2307 | } |
| 2308 | } |
| 2309 | if (ndisposing > 0) |
| 2310 | slist_fini(&users); |
| 2311 | } |
| 2312 | |
| 2313 | /** compare sockaddr_npppd. return 0 if matches */ |
| 2314 | int |
| 2315 | sockaddr_npppd_match(void *a0, void *b0) |
| 2316 | { |
| 2317 | struct sockaddr_npppd *a, *b; |
| 2318 | |
| 2319 | a = a0; |
| 2320 | b = b0; |
| 2321 | |
| 2322 | return (a->snp_addrsin4.sin_addr.s_addr == b->snp_addrsin4.sin_addr.s_addr)? 1 : 0; |
| 2323 | } |
| 2324 | |
| 2325 | /** |
| 2326 | * This function stores the username for authentication to the space specified |
| 2327 | * by username_buffer and returns it. username_buffer must have space more |
| 2328 | * than MAX_USERNAME_LENGTH. |
| 2329 | */ |
| 2330 | const char * |
| 2331 | npppd_ppp_get_username_for_auth(npppd *_this, npppd_ppp *ppp, |
| 2332 | const char *username, char *username_buffer) |
| 2333 | { |
| 2334 | NPPPD_ASSERT(_this != NULL); |
| 2335 | NPPPD_ASSERT(ppp != NULL); |
| 2336 | NPPPD_ASSERT(ppp->realm != NULL); |
| 2337 | |
| 2338 | return npppd_auth_username_for_auth(ppp->realm, username, |
| 2339 | username_buffer); |
| 2340 | } |
| 2341 | |
| 2342 | const char * |
| 2343 | npppd_tunnel_protocol_name(int tunn_protocol) |
| 2344 | { |
| 2345 | switch (tunn_protocol) { |
| 2346 | case NPPPD_TUNNEL_NONE0: |
| 2347 | return "None"; |
| 2348 | case NPPPD_TUNNEL_L2TP1: |
| 2349 | return "L2TP"; |
| 2350 | case NPPPD_TUNNEL_PPTP2: |
| 2351 | return "PPTP"; |
| 2352 | case NPPPD_TUNNEL_PPPOE3: |
| 2353 | return "PPPoE"; |
| 2354 | case NPPPD_TUNNEL_SSTP4: |
| 2355 | return "SSTP"; |
| 2356 | } |
| 2357 | |
| 2358 | return "Error"; |
| 2359 | } |
| 2360 | |
| 2361 | const char * |
| 2362 | npppd_ppp_tunnel_protocol_name(npppd *_this, npppd_ppp *ppp) |
| 2363 | { |
| 2364 | return npppd_tunnel_protocol_name(ppp->tunnel_type); |
| 2365 | } |
| 2366 | |
| 2367 | struct tunnconf * |
| 2368 | npppd_get_tunnconf(npppd *_this, const char *name) |
| 2369 | { |
| 2370 | struct tunnconf *conf; |
| 2371 | |
| 2372 | TAILQ_FOREACH(conf, &_this->conf.tunnconfs, entry)for((conf) = ((&_this->conf.tunnconfs)->tqh_first); (conf) != ((void *)0); (conf) = ((conf)->entry.tqe_next)) { |
| 2373 | if (strcmp(conf->name, name) == 0) |
| 2374 | return conf; |
| 2375 | } |
| 2376 | |
| 2377 | return NULL((void *)0); |
| 2378 | } |
| 2379 | |
| 2380 | void |
| 2381 | npppd_on_ppp_start(npppd *_this, npppd_ppp *ppp) |
| 2382 | { |
| 2383 | struct ctl_conn *c; |
| 2384 | |
| 2385 | TAILQ_FOREACH(c, &ctl_conns, entry)for((c) = ((&ctl_conns)->tqh_first); (c) != ((void *)0 ); (c) = ((c)->entry.tqe_next)) { |
| 2386 | if (npppd_ctl_add_started_ppp_id(c->ctx, ppp->id) == 0) { |
| 2387 | npppd_ctl_imsg_compose(c->ctx, &c->iev.ibuf); |
| 2388 | imsg_event_add(&c->iev); |
| 2389 | } |
| 2390 | } |
| 2391 | } |
| 2392 | |
| 2393 | void |
| 2394 | npppd_on_ppp_stop(npppd *_this, npppd_ppp *ppp) |
| 2395 | { |
| 2396 | struct ctl_conn *c; |
| 2397 | |
| 2398 | TAILQ_FOREACH(c, &ctl_conns, entry)for((c) = ((&ctl_conns)->tqh_first); (c) != ((void *)0 ); (c) = ((c)->entry.tqe_next)) { |
| 2399 | if (npppd_ctl_add_stopped_ppp(c->ctx, ppp) == 0) { |
| 2400 | npppd_ctl_imsg_compose(c->ctx, &c->iev.ibuf); |
| 2401 | imsg_event_add(&c->iev); |
| 2402 | } |
| 2403 | } |
| 2404 | } |
| 2405 | |
| 2406 | void |
| 2407 | imsg_event_add(struct imsgev *iev) |
| 2408 | { |
| 2409 | iev->events = EV_READ0x02; |
| 2410 | if (iev->ibuf.w.queued) |
| 2411 | iev->events |= EV_WRITE0x04; |
| 2412 | |
| 2413 | event_del(&iev->ev); |
| 2414 | event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev->data); |
| 2415 | event_add(&iev->ev, NULL((void *)0)); |
| 2416 | } |