1*0cd27c4aSyasuoka /* $OpenBSD: npppd.c,v 1.42 2015/11/09 01:14:22 yasuoka Exp $ */ 2e109dc18Syasuoka 30fbf3537Syasuoka /*- 44a39ccd0Sderaadt * Copyright (c) 2005-2008,2009 Internet Initiative Japan Inc. 50fbf3537Syasuoka * All rights reserved. 60fbf3537Syasuoka * 70fbf3537Syasuoka * Redistribution and use in source and binary forms, with or without 80fbf3537Syasuoka * modification, are permitted provided that the following conditions 90fbf3537Syasuoka * are met: 100fbf3537Syasuoka * 1. Redistributions of source code must retain the above copyright 110fbf3537Syasuoka * notice, this list of conditions and the following disclaimer. 120fbf3537Syasuoka * 2. Redistributions in binary form must reproduce the above copyright 130fbf3537Syasuoka * notice, this list of conditions and the following disclaimer in the 140fbf3537Syasuoka * documentation and/or other materials provided with the distribution. 150fbf3537Syasuoka * 160fbf3537Syasuoka * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 170fbf3537Syasuoka * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 180fbf3537Syasuoka * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 190fbf3537Syasuoka * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 200fbf3537Syasuoka * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 210fbf3537Syasuoka * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 220fbf3537Syasuoka * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 230fbf3537Syasuoka * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 240fbf3537Syasuoka * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 250fbf3537Syasuoka * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 260fbf3537Syasuoka * SUCH DAMAGE. 270fbf3537Syasuoka */ 280fbf3537Syasuoka /**@file 29f0a4e295Syasuoka * Next pppd(nppd). This file provides a npppd daemon process and operations 30f0a4e295Syasuoka * for npppd instance. 310fbf3537Syasuoka * @author Yasuoka Masahiko 32*0cd27c4aSyasuoka * $Id: npppd.c,v 1.42 2015/11/09 01:14:22 yasuoka Exp $ 330fbf3537Syasuoka */ 340fbf3537Syasuoka #include "version.h" 35dbad4650Sderaadt #include <sys/param.h> /* ALIGNED_POINTER */ 360fbf3537Syasuoka #include <sys/types.h> 370fbf3537Syasuoka #include <sys/socket.h> 380fbf3537Syasuoka #include <sys/sysctl.h> 395fefcc09Syasuoka #include <sys/wait.h> 400fbf3537Syasuoka #include <netinet/in.h> 410fbf3537Syasuoka #include <netinet/ip.h> 420fbf3537Syasuoka #include <net/route.h> 430fbf3537Syasuoka #include <arpa/inet.h> 440fbf3537Syasuoka #include <net/if_dl.h> 450fbf3537Syasuoka #include <unistd.h> 460fbf3537Syasuoka #include <time.h> 470fbf3537Syasuoka #include <syslog.h> 480fbf3537Syasuoka #include <string.h> 490fbf3537Syasuoka #include <stdlib.h> 500fbf3537Syasuoka #include <stdio.h> 510fbf3537Syasuoka #include <signal.h> 520fbf3537Syasuoka #include <netdb.h> 530fbf3537Syasuoka #include <libgen.h> 540fbf3537Syasuoka #include <fcntl.h> 550fbf3537Syasuoka #include <event.h> 560fbf3537Syasuoka #include <errno.h> 570fbf3537Syasuoka #include <ifaddrs.h> 584a78f66bSyasuoka #include <err.h> 594a78f66bSyasuoka #include <pwd.h> 600fbf3537Syasuoka 610fbf3537Syasuoka #include "pathnames.h" 620fbf3537Syasuoka #include "debugutil.h" 630fbf3537Syasuoka #include "addr_range.h" 640fbf3537Syasuoka #include "npppd_subr.h" 650fbf3537Syasuoka #include "npppd_local.h" 660fbf3537Syasuoka #include "npppd_auth.h" 670fbf3537Syasuoka #include "radish.h" 680fbf3537Syasuoka #include "net_utils.h" 690fbf3537Syasuoka #include "time_utils.h" 700fbf3537Syasuoka 71b56612b6Smarkus #include "l2tp_local.h" /* XXX sa_cookie */ 72b56612b6Smarkus 730fbf3537Syasuoka #ifdef USE_NPPPD_ARP 740fbf3537Syasuoka #include "npppd_arp.h" 750fbf3537Syasuoka #endif 760fbf3537Syasuoka 770fbf3537Syasuoka #ifdef USE_NPPPD_PIPEX 780fbf3537Syasuoka #ifdef USE_NPPPD_PPPOE 790fbf3537Syasuoka #include "pppoe_local.h" 800fbf3537Syasuoka #endif /* USE_NPPPD_PPPOE */ 810fbf3537Syasuoka #include "psm-opt.h" 820fbf3537Syasuoka #include <sys/ioctl.h> 830fbf3537Syasuoka #if defined(__NetBSD__) 840fbf3537Syasuoka #include <net/if_ether.h> 850fbf3537Syasuoka #else 860fbf3537Syasuoka #include <netinet/if_ether.h> 870fbf3537Syasuoka #endif 88886d2b78Syasuoka #include <netinet/ip_var.h> 89886d2b78Syasuoka #include <net/if_types.h> 900fbf3537Syasuoka #include <net/pipex.h> 910fbf3537Syasuoka #endif /* USE_NPPPD_PIPEX */ 920fbf3537Syasuoka 9359408346Syasuoka #include "accept.h" 9459408346Syasuoka #include "log.h" 9559408346Syasuoka 960fbf3537Syasuoka static npppd s_npppd; /* singleton */ 970fbf3537Syasuoka 980fbf3537Syasuoka static void npppd_reload0 (npppd *); 99821f7c56Syasuoka static void npppd_update_pool_reference (npppd *); 1000fbf3537Syasuoka static int npppd_rd_walktree_delete(struct radish_head *); 101*0cd27c4aSyasuoka static __dead void usage (void); 1020fbf3537Syasuoka static void npppd_stop_really (npppd *); 1030fbf3537Syasuoka static uint32_t str_hash(const void *, int); 1040fbf3537Syasuoka static void npppd_on_sighup (int, short, void *); 1050fbf3537Syasuoka static void npppd_on_sigterm (int, short, void *); 1060fbf3537Syasuoka static void npppd_on_sigint (int, short, void *); 1075fefcc09Syasuoka static void npppd_on_sigchld (int, short, void *); 1080fbf3537Syasuoka static void npppd_reset_timer(npppd *); 1090fbf3537Syasuoka static void npppd_timer(int, short, void *); 1100fbf3537Syasuoka static void npppd_auth_finalizer_periodic(npppd *); 1110fbf3537Syasuoka static int rd2slist_walk (struct radish *, void *); 1120fbf3537Syasuoka static int rd2slist (struct radish_head *, slist *); 11334682664Syasuoka static slist *npppd_get_ppp_by_user (npppd *, const char *); 11434682664Syasuoka static int npppd_get_all_users (npppd *, slist *); 1150fbf3537Syasuoka 1160fbf3537Syasuoka #ifndef NO_ROUTE_FOR_POOLED_ADDRESS 1170fbf3537Syasuoka static struct in_addr loop; /* initialize at npppd_init() */ 1180fbf3537Syasuoka #endif 1190fbf3537Syasuoka static uint32_t str_hash(const void *, int); 1200fbf3537Syasuoka 1210fbf3537Syasuoka #ifdef USE_NPPPD_PIPEX 1220fbf3537Syasuoka static int npppd_ppp_pipex_ip_disable(npppd *, npppd_ppp *); 1230fbf3537Syasuoka static void pipex_periodic(npppd *); 1240fbf3537Syasuoka #endif /* USE_NPPPD_PIPEX */ 1250fbf3537Syasuoka 1260fbf3537Syasuoka #ifdef NPPPD_DEBUG 1270fbf3537Syasuoka #define NPPPD_DBG(x) log_printf x 1280fbf3537Syasuoka #define NPPPD_ASSERT(x) ASSERT(x) 1290fbf3537Syasuoka #else 1300fbf3537Syasuoka #define NPPPD_DBG(x) 1310fbf3537Syasuoka #define NPPPD_ASSERT(x) 1320fbf3537Syasuoka #endif 1330fbf3537Syasuoka 1340fbf3537Syasuoka /*********************************************************************** 135f0a4e295Syasuoka * Daemon process 1360fbf3537Syasuoka ***********************************************************************/ 1370fbf3537Syasuoka int main (int, char *[]); 138821f7c56Syasuoka int debugsyslog = 0; /* used by log.c */ 1390fbf3537Syasuoka 1400fbf3537Syasuoka int 1410fbf3537Syasuoka main(int argc, char *argv[]) 1420fbf3537Syasuoka { 143821f7c56Syasuoka int ch, stop_by_error, runasdaemon = 1, nflag = 0; 1440fbf3537Syasuoka extern char *optarg; 1450fbf3537Syasuoka const char *npppd_conf0 = DEFAULT_NPPPD_CONF; 1464a78f66bSyasuoka struct passwd *pw; 1470fbf3537Syasuoka 148*0cd27c4aSyasuoka while ((ch = getopt(argc, argv, "nf:d")) != -1) { 1490fbf3537Syasuoka switch (ch) { 150821f7c56Syasuoka case 'n': 151821f7c56Syasuoka nflag = 1; 1520fbf3537Syasuoka break; 153821f7c56Syasuoka case 'f': 1540fbf3537Syasuoka npppd_conf0 = optarg; 1550fbf3537Syasuoka break; 1560fbf3537Syasuoka case 'd': 1570fbf3537Syasuoka debuglevel++; 158821f7c56Syasuoka runasdaemon = 0; 1590fbf3537Syasuoka break; 160*0cd27c4aSyasuoka default: 1610fbf3537Syasuoka usage(); 1620fbf3537Syasuoka } 1630fbf3537Syasuoka } 164821f7c56Syasuoka argc -= optind; 165821f7c56Syasuoka argv += optind; 166*0cd27c4aSyasuoka if (argc != 0) 167821f7c56Syasuoka usage(); 168821f7c56Syasuoka if (nflag) { 169821f7c56Syasuoka debuglevel++; 170821f7c56Syasuoka runasdaemon = 0; 171821f7c56Syasuoka } 172821f7c56Syasuoka 173821f7c56Syasuoka /* for log.c */ 174821f7c56Syasuoka log_init(debuglevel); 1750fbf3537Syasuoka if (debuglevel > 0) { 176821f7c56Syasuoka /* for ../common/debugutil.c */ 1770fbf3537Syasuoka debug_set_debugfp(stderr); 1780fbf3537Syasuoka debug_use_syslog(0); 179821f7c56Syasuoka } 1800fbf3537Syasuoka if (runasdaemon) 1810fbf3537Syasuoka daemon(0, 0); 1820fbf3537Syasuoka 1834a78f66bSyasuoka /* check for root privileges */ 1844a78f66bSyasuoka if (geteuid()) 1854a78f66bSyasuoka errx(1, "need root privileges"); 1864a78f66bSyasuoka /* check for npppd user */ 1874a78f66bSyasuoka if (getpwnam(NPPPD_USER) == NULL) 1884a78f66bSyasuoka errx(1, "unknown user %s", NPPPD_USER); 1894a78f66bSyasuoka 1904a78f66bSyasuoka if (privsep_init() != 0) 1914a78f66bSyasuoka err(1, "cannot drop privileges"); 1924a78f66bSyasuoka 193821f7c56Syasuoka if (nflag) { 194821f7c56Syasuoka if (npppd_config_check(npppd_conf0) == 0) { 195821f7c56Syasuoka fprintf(stderr, "configuration OK\n"); 196821f7c56Syasuoka exit(EXIT_SUCCESS); 197821f7c56Syasuoka } 198821f7c56Syasuoka exit(EXIT_FAILURE); 199821f7c56Syasuoka } 2009a200ddfSyasuoka if (npppd_init(&s_npppd, npppd_conf0) != 0) 2019a200ddfSyasuoka exit(EXIT_FAILURE); 2024a78f66bSyasuoka 2034a78f66bSyasuoka if ((pw = getpwnam(NPPPD_USER)) == NULL) 2049a200ddfSyasuoka err(EXIT_FAILURE, "gwpwnam"); 2054a78f66bSyasuoka if (chroot(pw->pw_dir) == -1) 2069a200ddfSyasuoka err(EXIT_FAILURE, "chroot"); 2074a78f66bSyasuoka if (chdir("/") == -1) 2089a200ddfSyasuoka err(EXIT_FAILURE, "chdir(\"/\")"); 2094a78f66bSyasuoka if (setgroups(1, &pw->pw_gid) || 2104a78f66bSyasuoka setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) || 2114a78f66bSyasuoka setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) 2129a200ddfSyasuoka err(EXIT_FAILURE, "cannot drop privileges"); 2134a78f66bSyasuoka /* privileges is dropped */ 2144a78f66bSyasuoka 2150fbf3537Syasuoka npppd_start(&s_npppd); 2169a200ddfSyasuoka stop_by_error = s_npppd.stop_by_error; 2170fbf3537Syasuoka npppd_fini(&s_npppd); 2184a78f66bSyasuoka privsep_fini(); 2190fbf3537Syasuoka log_printf(LOG_NOTICE, "Terminate npppd."); 2200fbf3537Syasuoka 2219a200ddfSyasuoka exit((!stop_by_error)? EXIT_SUCCESS : EXIT_FAILURE); 2220fbf3537Syasuoka } 2230fbf3537Syasuoka 224*0cd27c4aSyasuoka static __dead void 225*0cd27c4aSyasuoka usage(void) 2260fbf3537Syasuoka { 227*0cd27c4aSyasuoka fprintf(stderr, "usage: npppd [-dn] [-f config_file]\n"); 228*0cd27c4aSyasuoka exit(1); 2290fbf3537Syasuoka } 2300fbf3537Syasuoka 231f0a4e295Syasuoka /** Returns the singleton npppd instance */ 2320fbf3537Syasuoka npppd * 2330fbf3537Syasuoka npppd_get_npppd() 2340fbf3537Syasuoka { 2350fbf3537Syasuoka return &s_npppd; 2360fbf3537Syasuoka } 2370fbf3537Syasuoka 2380fbf3537Syasuoka /*********************************************************************** 239f0a4e295Syasuoka * Operations to npppd itself (initialize/finalize/start/stop) 2400fbf3537Syasuoka ***********************************************************************/ 241f0a4e295Syasuoka /** Initialize the npppd */ 2420fbf3537Syasuoka int 2430fbf3537Syasuoka npppd_init(npppd *_this, const char *config_file) 2440fbf3537Syasuoka { 2450fbf3537Syasuoka int i, status = -1; 2460fbf3537Syasuoka const char *pidpath0; 2470fbf3537Syasuoka FILE *pidfp = NULL; 2480fbf3537Syasuoka 2490fbf3537Syasuoka memset(_this, 0, sizeof(npppd)); 250cd8e09b9Sdlg #ifndef NO_ROUTE_FOR_POOLED_ADDRESS 2510fbf3537Syasuoka loop.s_addr = htonl(INADDR_LOOPBACK); 252cd8e09b9Sdlg #endif 2530fbf3537Syasuoka 2540fbf3537Syasuoka NPPPD_ASSERT(config_file != NULL); 2550fbf3537Syasuoka 2560fbf3537Syasuoka pidpath0 = NULL; 2570fbf3537Syasuoka _this->pid = getpid(); 2580fbf3537Syasuoka slist_init(&_this->realms); 259821f7c56Syasuoka npppd_conf_init(&_this->conf); 2600fbf3537Syasuoka 2610fbf3537Syasuoka log_printf(LOG_NOTICE, "Starting npppd pid=%u version=%s", 2620fbf3537Syasuoka _this->pid, VERSION); 2630fbf3537Syasuoka #if defined(BUILD_DATE) && defined(BUILD_TIME) 2640fbf3537Syasuoka log_printf(LOG_INFO, "Build %s %s ", BUILD_DATE, BUILD_TIME); 2650fbf3537Syasuoka #endif 2660fbf3537Syasuoka if (get_nanotime() == INT64_MIN) { 2670fbf3537Syasuoka log_printf(LOG_ERR, "get_nanotime() failed: %m"); 2680fbf3537Syasuoka return 1; 2690fbf3537Syasuoka } 2700fbf3537Syasuoka 2710fbf3537Syasuoka if (realpath(config_file, _this->config_file) == NULL) { 2720fbf3537Syasuoka log_printf(LOG_ERR, "realpath(%s,) failed in %s(): %m", 2730fbf3537Syasuoka config_file, __func__); 2740fbf3537Syasuoka return 1; 2750fbf3537Syasuoka } 276f0a4e295Syasuoka /* we assume 4.4 compatible realpath(). See realpath(3) on BSD. */ 2770fbf3537Syasuoka NPPPD_ASSERT(_this->config_file[0] == '/'); 2780fbf3537Syasuoka 279c2307f15Syasuoka _this->boot_id = arc4random(); 2808daf7599Syasuoka 28106adecbeSyasuoka #ifdef USE_NPPPD_L2TP 28206adecbeSyasuoka if (l2tpd_init(&_this->l2tpd) != 0) 28306adecbeSyasuoka return (-1); 28406adecbeSyasuoka #endif 28506adecbeSyasuoka #ifdef USE_NPPPD_PPTP 28606adecbeSyasuoka if (pptpd_init(&_this->pptpd) != 0) 28706adecbeSyasuoka return (-1); 28806adecbeSyasuoka #endif 28906adecbeSyasuoka #ifdef USE_NPPPD_PPPOE 29006adecbeSyasuoka if (pppoed_init(&_this->pppoed) != 0) 29106adecbeSyasuoka return (-1); 29206adecbeSyasuoka #endif 293f0a4e295Syasuoka /* load configuration */ 2940fbf3537Syasuoka if ((status = npppd_reload_config(_this)) != 0) 2950fbf3537Syasuoka return status; 2960fbf3537Syasuoka 2970fbf3537Syasuoka if ((_this->map_user_ppp = hash_create( 2980fbf3537Syasuoka (int (*) (const void *, const void *))strcmp, str_hash, 2990fbf3537Syasuoka NPPPD_USER_HASH_SIZ)) == NULL) { 3000fbf3537Syasuoka log_printf(LOG_ERR, "hash_create() failed in %s(): %m", 3010fbf3537Syasuoka __func__); 3020fbf3537Syasuoka return -1; 3030fbf3537Syasuoka } 3040fbf3537Syasuoka 3050fbf3537Syasuoka if (npppd_ifaces_load_config(_this) != 0) { 3060fbf3537Syasuoka return -1; 3070fbf3537Syasuoka } 3080fbf3537Syasuoka 3090fbf3537Syasuoka pidpath0 = DEFAULT_NPPPD_PIDFILE; 3100fbf3537Syasuoka 311f0a4e295Syasuoka /* initialize event(3) */ 3120fbf3537Syasuoka event_init(); 31334682664Syasuoka _this->ctl_sock.cs_name = NPPPD_SOCKET; 31434682664Syasuoka _this->ctl_sock.cs_ctx = _this; 31534682664Syasuoka if (control_init(&_this->ctl_sock) == -1) { 31634682664Syasuoka log_printf(LOG_ERR, "control_init() failed %s(): %m", 31734682664Syasuoka __func__); 31834682664Syasuoka return (-1); 31934682664Syasuoka } 32034682664Syasuoka if (control_listen(&_this->ctl_sock) == -1) { 32134682664Syasuoka log_printf(LOG_ERR, "control_listen() failed %s(): %m", 32234682664Syasuoka __func__); 32334682664Syasuoka return (-1); 32434682664Syasuoka } 32559408346Syasuoka accept_init(); 32659408346Syasuoka 327f0a4e295Syasuoka /* ignore signals */ 3280fbf3537Syasuoka signal(SIGPIPE, SIG_IGN); 3290fbf3537Syasuoka signal(SIGURG, SIG_IGN); 330f0a4e295Syasuoka 331f0a4e295Syasuoka /* set signal handlers */ 3320fbf3537Syasuoka signal_set(&_this->ev_sigterm, SIGTERM, npppd_on_sigterm, _this); 3330fbf3537Syasuoka signal_set(&_this->ev_sigint, SIGINT, npppd_on_sigint, _this); 3340fbf3537Syasuoka signal_set(&_this->ev_sighup, SIGHUP, npppd_on_sighup, _this); 3355fefcc09Syasuoka signal_set(&_this->ev_sigchld, SIGCHLD, npppd_on_sigchld, _this); 3360fbf3537Syasuoka signal_add(&_this->ev_sigterm, NULL); 3370fbf3537Syasuoka signal_add(&_this->ev_sigint, NULL); 3380fbf3537Syasuoka signal_add(&_this->ev_sighup, NULL); 3395fefcc09Syasuoka signal_add(&_this->ev_sigchld, NULL); 3400fbf3537Syasuoka 3410fbf3537Syasuoka evtimer_set(&_this->ev_timer, npppd_timer, _this); 3420fbf3537Syasuoka 343f0a4e295Syasuoka /* start tun(4) or pppac(4) */ 3440fbf3537Syasuoka status = 0; 3450fbf3537Syasuoka for (i = 0; i < countof(_this->iface); i++) { 3460fbf3537Syasuoka if (_this->iface[i].initialized != 0) 3470fbf3537Syasuoka status |= npppd_iface_start(&_this->iface[i]); 3480fbf3537Syasuoka } 3490fbf3537Syasuoka if (status != 0) 3500fbf3537Syasuoka return -1; 3510fbf3537Syasuoka 3520fbf3537Syasuoka /* 353f0a4e295Syasuoka * If the npppd can start(open) interfaces successfully, it can 354f0a4e295Syasuoka * act as only one npppd process on the system and overwrite the pid 355f0a4e295Syasuoka * file. 3560fbf3537Syasuoka */ 3570fbf3537Syasuoka if ((pidfp = fopen(pidpath0, "w+")) == NULL) { 3580fbf3537Syasuoka log_printf(LOG_ERR, "fopen(%s,w+) failed in %s(): %m", 3590fbf3537Syasuoka pidpath0, __func__); 3600fbf3537Syasuoka return -1; 3610fbf3537Syasuoka } 3620fbf3537Syasuoka strlcpy(_this->pidpath, pidpath0, sizeof(_this->pidpath)); 3630fbf3537Syasuoka fprintf(pidfp, "%u\n", _this->pid); 3640fbf3537Syasuoka fclose(pidfp); 3650fbf3537Syasuoka pidfp = NULL; 3660fbf3537Syasuoka #ifdef USE_NPPPD_ARP 3670fbf3537Syasuoka arp_set_strictintfnetwork(npppd_config_str_equali(_this, "arpd.strictintfnetwork", "true", ARPD_STRICTINTFNETWORK_DEFAULT)); 3680fbf3537Syasuoka if (npppd_config_str_equali(_this, "arpd.enabled", "true", ARPD_DEFAULT) == 1) 3690fbf3537Syasuoka arp_sock_init(); 3700fbf3537Syasuoka #endif 371821f7c56Syasuoka if ((status = npppd_modules_reload(_this)) != 0) 372821f7c56Syasuoka return status; 373821f7c56Syasuoka 374821f7c56Syasuoka npppd_update_pool_reference(_this); 375821f7c56Syasuoka 376821f7c56Syasuoka return 0; 3770fbf3537Syasuoka } 3780fbf3537Syasuoka 379f0a4e295Syasuoka /** start the npppd */ 3800fbf3537Syasuoka void 3810fbf3537Syasuoka npppd_start(npppd *_this) 3820fbf3537Syasuoka { 3830fbf3537Syasuoka int rval = 0; 3840fbf3537Syasuoka 3850fbf3537Syasuoka npppd_reset_timer(_this); 386f65d56a4Syasuoka while ((rval = event_loop(EVLOOP_ONCE)) == 0) { 3870fbf3537Syasuoka if (_this->finalized != 0) 3880fbf3537Syasuoka break; 3890fbf3537Syasuoka } 390f65d56a4Syasuoka if (rval != 0) { 3910fbf3537Syasuoka log_printf(LOG_CRIT, "event_loop() failed: %m"); 392f65d56a4Syasuoka abort(); 393f65d56a4Syasuoka } 3940fbf3537Syasuoka } 3950fbf3537Syasuoka 396f0a4e295Syasuoka /** stop the npppd */ 3970fbf3537Syasuoka void 3980fbf3537Syasuoka npppd_stop(npppd *_this) 3990fbf3537Syasuoka { 4000fbf3537Syasuoka int i; 4010fbf3537Syasuoka #ifdef USE_NPPPD_L2TP 4020fbf3537Syasuoka l2tpd_stop(&_this->l2tpd); 4030fbf3537Syasuoka #endif 4040fbf3537Syasuoka #ifdef USE_NPPPD_PPTP 4050fbf3537Syasuoka pptpd_stop(&_this->pptpd); 4060fbf3537Syasuoka #endif 4070fbf3537Syasuoka #ifdef USE_NPPPD_PPPOE 4080fbf3537Syasuoka pppoed_stop(&_this->pppoed); 4090fbf3537Syasuoka #endif 4100fbf3537Syasuoka #ifdef USE_NPPPD_ARP 4110fbf3537Syasuoka arp_sock_fini(); 4120fbf3537Syasuoka #endif 41334682664Syasuoka close(_this->ctl_sock.cs_fd); 41434682664Syasuoka control_cleanup(&_this->ctl_sock); 41534682664Syasuoka 4160fbf3537Syasuoka for (i = countof(_this->iface) - 1; i >= 0; i--) { 4170fbf3537Syasuoka if (_this->iface[i].initialized != 0) 4180fbf3537Syasuoka npppd_iface_stop(&_this->iface[i]); 4190fbf3537Syasuoka } 4200fbf3537Syasuoka npppd_set_radish(_this, NULL); 4210fbf3537Syasuoka 4220fbf3537Syasuoka _this->finalizing = 1; 4230fbf3537Syasuoka npppd_reset_timer(_this); 4240fbf3537Syasuoka } 4250fbf3537Syasuoka 4260fbf3537Syasuoka static void 4270fbf3537Syasuoka npppd_stop_really(npppd *_this) 4280fbf3537Syasuoka { 4290fbf3537Syasuoka int i; 4300fbf3537Syasuoka #if defined(USE_NPPPD_L2TP) || defined(USE_NPPPD_PPTP) 4310fbf3537Syasuoka int wait_again; 4320fbf3537Syasuoka 4330fbf3537Syasuoka wait_again = 0; 4340fbf3537Syasuoka 4350fbf3537Syasuoka #ifdef USE_NPPPD_L2TP 4360fbf3537Syasuoka if (!l2tpd_is_stopped(&_this->l2tpd)) 4370fbf3537Syasuoka wait_again |= 1; 4380fbf3537Syasuoka #endif 4390fbf3537Syasuoka #ifdef USE_NPPPD_PPTP 4400fbf3537Syasuoka if (!pptpd_is_stopped(&_this->pptpd)) 4410fbf3537Syasuoka wait_again |= 1; 4420fbf3537Syasuoka #endif 4430fbf3537Syasuoka if (wait_again != 0) { 4440fbf3537Syasuoka npppd_reset_timer(_this); 4450fbf3537Syasuoka return; 4460fbf3537Syasuoka } 4470fbf3537Syasuoka #endif 4480fbf3537Syasuoka for (i = countof(_this->iface) - 1; i >= 0; i--) { 4490fbf3537Syasuoka npppd_iface_fini(&_this->iface[i]); 4500fbf3537Syasuoka } 4510fbf3537Syasuoka _this->finalized = 1; 4520fbf3537Syasuoka } 4530fbf3537Syasuoka 454f0a4e295Syasuoka /** finalize the npppd */ 4550fbf3537Syasuoka void 4560fbf3537Syasuoka npppd_fini(npppd *_this) 4570fbf3537Syasuoka { 4580fbf3537Syasuoka int i; 4590fbf3537Syasuoka npppd_auth_base *auth_base; 4600fbf3537Syasuoka 4610fbf3537Syasuoka #ifdef USE_NPPPD_L2TP 4620fbf3537Syasuoka l2tpd_uninit(&_this->l2tpd); 4630fbf3537Syasuoka #endif 4640fbf3537Syasuoka #ifdef USE_NPPPD_PPTP 4650fbf3537Syasuoka pptpd_uninit(&_this->pptpd); 4660fbf3537Syasuoka #endif 4670fbf3537Syasuoka #ifdef USE_NPPPD_PPPOE 4680fbf3537Syasuoka pppoed_uninit(&_this->pppoed); 4690fbf3537Syasuoka #endif 4700fbf3537Syasuoka for (slist_itr_first(&_this->realms); 4710fbf3537Syasuoka slist_itr_has_next(&_this->realms);) { 4720fbf3537Syasuoka auth_base = slist_itr_next(&_this->realms); 4730fbf3537Syasuoka npppd_auth_destroy(auth_base); 4740fbf3537Syasuoka } 4750fbf3537Syasuoka for (i = countof(_this->iface) - 1; i >= 0; i--) { 4760fbf3537Syasuoka if (_this->iface[i].initialized != 0) 4770fbf3537Syasuoka npppd_iface_fini(&_this->iface[i]); 4780fbf3537Syasuoka } 4790fbf3537Syasuoka 4800fbf3537Syasuoka for (i = countof(_this->pool) - 1; i >= 0; i--) { 4810fbf3537Syasuoka if (_this->pool[i].initialized != 0) 4820fbf3537Syasuoka npppd_pool_uninit(&_this->pool[i]); 4830fbf3537Syasuoka } 4840fbf3537Syasuoka 4850fbf3537Syasuoka signal_del(&_this->ev_sigterm); 4860fbf3537Syasuoka signal_del(&_this->ev_sigint); 4870fbf3537Syasuoka signal_del(&_this->ev_sighup); 4885fefcc09Syasuoka signal_del(&_this->ev_sigchld); 4890fbf3537Syasuoka 490821f7c56Syasuoka npppd_conf_fini(&_this->conf); 4910fbf3537Syasuoka 4920fbf3537Syasuoka slist_fini(&_this->realms); 4930fbf3537Syasuoka 4940fbf3537Syasuoka if (_this->map_user_ppp != NULL) 4950fbf3537Syasuoka hash_free(_this->map_user_ppp); 4960fbf3537Syasuoka } 4970fbf3537Syasuoka 4980fbf3537Syasuoka /*********************************************************************** 499f0a4e295Syasuoka * Timer related functions 5000fbf3537Syasuoka ***********************************************************************/ 5010fbf3537Syasuoka static void 5020fbf3537Syasuoka npppd_reset_timer(npppd *_this) 5030fbf3537Syasuoka { 5040fbf3537Syasuoka struct timeval tv; 5050fbf3537Syasuoka 5060fbf3537Syasuoka if (_this->finalizing != 0) { 507f0a4e295Syasuoka /* we can use the timer exclusively on finalizing */ 5080fbf3537Syasuoka tv.tv_usec = 500000; 5090fbf3537Syasuoka tv.tv_sec = 0; 5100fbf3537Syasuoka evtimer_add(&_this->ev_timer, &tv); 5110fbf3537Syasuoka } else { 5120fbf3537Syasuoka tv.tv_usec = 0; 5130fbf3537Syasuoka tv.tv_sec = NPPPD_TIMER_TICK_IVAL; 5140fbf3537Syasuoka evtimer_add(&_this->ev_timer, &tv); 5150fbf3537Syasuoka } 5160fbf3537Syasuoka } 5170fbf3537Syasuoka 5180fbf3537Syasuoka static void 5190fbf3537Syasuoka npppd_timer(int fd, short evtype, void *ctx) 5200fbf3537Syasuoka { 5210fbf3537Syasuoka npppd *_this; 5220fbf3537Syasuoka 5230fbf3537Syasuoka _this = ctx; 5240fbf3537Syasuoka if (_this->finalizing != 0) { 525f0a4e295Syasuoka npppd_stop_really(_this); /* The timer has been reset */ 526f0a4e295Syasuoka return; /* we can use the timer exclusively on finalizing */ 5270fbf3537Syasuoka } 5280fbf3537Syasuoka _this->secs += NPPPD_TIMER_TICK_IVAL; 5290fbf3537Syasuoka if (_this->reloading_count > 0) { 5300fbf3537Syasuoka _this->reloading_count -= NPPPD_TIMER_TICK_IVAL; 5310fbf3537Syasuoka if (_this->reloading_count <= 0) { 5320fbf3537Syasuoka npppd_reload0(_this); 5330fbf3537Syasuoka _this->reloading_count = 0; 5340fbf3537Syasuoka } 5350fbf3537Syasuoka } else { 5360fbf3537Syasuoka if ((_this->secs % TIMER_TICK_RUP( 5370fbf3537Syasuoka NPPPD_AUTH_REALM_FINALIZER_INTERVAL)) == 0) 5380fbf3537Syasuoka npppd_auth_finalizer_periodic(_this); 5390fbf3537Syasuoka } 5400fbf3537Syasuoka 5410fbf3537Syasuoka #ifdef USE_NPPPD_PPPOE 5420fbf3537Syasuoka if (pppoed_need_polling(&_this->pppoed)) 5430fbf3537Syasuoka pppoed_reload_listeners(&_this->pppoed); 5440fbf3537Syasuoka #endif 5450fbf3537Syasuoka #ifdef USE_NPPPD_PIPEX 5460fbf3537Syasuoka pipex_periodic(_this); 5470fbf3537Syasuoka #endif 5480fbf3537Syasuoka 5490fbf3537Syasuoka npppd_reset_timer(_this); 5500fbf3537Syasuoka } 5510fbf3537Syasuoka 5520fbf3537Syasuoka int 5530fbf3537Syasuoka npppd_reset_routing_table(npppd *_this, int pool_only) 5540fbf3537Syasuoka { 5550fbf3537Syasuoka #ifndef NO_ROUTE_FOR_POOLED_ADDRESS 5560fbf3537Syasuoka slist rtlist0; 5570fbf3537Syasuoka 558cd8e09b9Sdlg if (_this->iface[0].using_pppx) 559cd8e09b9Sdlg return 0; 560cd8e09b9Sdlg 5610fbf3537Syasuoka slist_init(&rtlist0); 5620fbf3537Syasuoka if (rd2slist(_this->rd, &rtlist0) != 0) 5630fbf3537Syasuoka return 1; 5640fbf3537Syasuoka 5650fbf3537Syasuoka for (slist_itr_first(&rtlist0); slist_itr_has_next(&rtlist0); ) { 5660fbf3537Syasuoka struct radish *rd; 5670fbf3537Syasuoka struct sockaddr_npppd *snp; 5680fbf3537Syasuoka npppd_ppp *ppp; 5690fbf3537Syasuoka int is_first; 5700fbf3537Syasuoka 5710fbf3537Syasuoka rd = slist_itr_next(&rtlist0); 5720fbf3537Syasuoka snp = rd->rd_rtent; 5730fbf3537Syasuoka 5740fbf3537Syasuoka is_first = 1; 5750fbf3537Syasuoka for (snp = rd->rd_rtent; snp != NULL; snp = snp->snp_next) { 5760fbf3537Syasuoka switch (snp->snp_type) { 5770fbf3537Syasuoka case SNP_POOL: 5780fbf3537Syasuoka case SNP_DYN_POOL: 5790fbf3537Syasuoka if (is_first) 5800fbf3537Syasuoka in_route_add(&snp->snp_addr, 5810fbf3537Syasuoka &snp->snp_mask, &loop, 5820fbf3537Syasuoka LOOPBACK_IFNAME, RTF_BLACKHOLE, 0); 5830fbf3537Syasuoka break; 5840fbf3537Syasuoka 5850fbf3537Syasuoka case SNP_PPP: 5860fbf3537Syasuoka if (pool_only) 5870fbf3537Syasuoka break; 5880fbf3537Syasuoka ppp = snp->snp_data_ptr; 5890fbf3537Syasuoka if (ppp->ppp_framed_ip_netmask.s_addr 5900fbf3537Syasuoka == 0xffffffffL) { 5910fbf3537Syasuoka in_host_route_add(&ppp-> 5920fbf3537Syasuoka ppp_framed_ip_address, 5930fbf3537Syasuoka &ppp_iface(ppp)->ip4addr, 5940fbf3537Syasuoka ppp_iface(ppp)->ifname, 5950fbf3537Syasuoka MRU_IPMTU(ppp->peer_mru)); 5960fbf3537Syasuoka } else { 5970fbf3537Syasuoka in_route_add(&ppp-> 5980fbf3537Syasuoka ppp_framed_ip_address, 5990fbf3537Syasuoka &ppp->ppp_framed_ip_netmask, 6000fbf3537Syasuoka &ppp_iface(ppp)->ip4addr, 6010fbf3537Syasuoka ppp_iface(ppp)->ifname, 0, 6020fbf3537Syasuoka MRU_IPMTU(ppp->peer_mru)); 6030fbf3537Syasuoka } 6040fbf3537Syasuoka break; 6050fbf3537Syasuoka } 6060fbf3537Syasuoka is_first = 0; 6070fbf3537Syasuoka } 6080fbf3537Syasuoka 6090fbf3537Syasuoka } 6100fbf3537Syasuoka 6110fbf3537Syasuoka slist_fini(&rtlist0); 6120fbf3537Syasuoka #endif 6130fbf3537Syasuoka return 0; 6140fbf3537Syasuoka } 6150fbf3537Syasuoka 6160fbf3537Syasuoka /*********************************************************************** 617f0a4e295Syasuoka * Other npppd related functions. 6180fbf3537Syasuoka ***********************************************************************/ 6190fbf3537Syasuoka /** 620f0a4e295Syasuoka * Get the user's password. Return 0 on success. 6210fbf3537Syasuoka * 622f0a4e295Syasuoka * @param username Username who acquires password 623f0a4e295Syasuoka * @param password A pointer to a buffer space to store the password. 624f0a4e295Syasuoka * Use NULL when you need to know only the length of 625f0a4e295Syasuoka * the password. 626f0a4e295Syasuoka * @param plpassword A pointer to the length of the password parameter. 627f0a4e295Syasuoka * This function uses this parameter value and stores 628f0a4e295Syasuoka * the required length value pointed to by this 629f0a4e295Syasuoka * parameter. Use NULL when use don't need to know 630f0a4e295Syasuoka * the password and its length. 631f0a4e295Syasuoka * @return If the function succeeds, 0 is returned. The function returns 632f0a4e295Syasuoka * 1 if the username is unknown, returns 2 if the password buffer 633f0a4e295Syasuoka * length is not enough. It returns negative value for other 634f0a4e295Syasuoka * errors. 6350fbf3537Syasuoka */ 6360fbf3537Syasuoka int 6370fbf3537Syasuoka npppd_get_user_password(npppd *_this, npppd_ppp *ppp, 6380fbf3537Syasuoka const char *username, char *password, int *plpassword) 6390fbf3537Syasuoka { 6400fbf3537Syasuoka char buf0[MAX_USERNAME_LENGTH]; 6410fbf3537Syasuoka 6420fbf3537Syasuoka NPPPD_ASSERT(ppp->realm != NULL); 6430fbf3537Syasuoka return npppd_auth_get_user_password(ppp->realm, 6440fbf3537Syasuoka npppd_auth_username_for_auth(ppp->realm, username, buf0), password, 6450fbf3537Syasuoka plpassword); 6460fbf3537Syasuoka } 6470fbf3537Syasuoka 648f0a4e295Syasuoka /** Get the Framed-IP-Address attribute of the user */ 6490fbf3537Syasuoka struct in_addr * 6500fbf3537Syasuoka npppd_get_user_framed_ip_address(npppd *_this, npppd_ppp *ppp, 6510fbf3537Syasuoka const char *username) 6520fbf3537Syasuoka { 6530fbf3537Syasuoka 6540fbf3537Syasuoka if (ppp->peer_auth == 0) { 6550fbf3537Syasuoka ppp->realm_framed_ip_address.s_addr = 0; 6560fbf3537Syasuoka goto do_default; 6570fbf3537Syasuoka } 6580fbf3537Syasuoka NPPPD_ASSERT(ppp->realm != NULL); 6590fbf3537Syasuoka 660821f7c56Syasuoka if (ppp->realm_framed_ip_address.s_addr != 0) 6610fbf3537Syasuoka return &ppp->realm_framed_ip_address; 6620fbf3537Syasuoka 663f0a4e295Syasuoka /* assign by the authentication realm */ 6640fbf3537Syasuoka if (npppd_auth_get_framed_ip(ppp->realm, username, 6650fbf3537Syasuoka &ppp->realm_framed_ip_address, 6660fbf3537Syasuoka &ppp->realm_framed_ip_netmask) != 0) 6670fbf3537Syasuoka ppp->realm_framed_ip_address.s_addr = 0; 6680fbf3537Syasuoka 6690fbf3537Syasuoka do_default: 670f0a4e295Syasuoka /* Use USER_SELECT if the realm doesn't specify the ip address */ 6710fbf3537Syasuoka if (ppp->realm_framed_ip_address.s_addr == 0) 6720fbf3537Syasuoka ppp->realm_framed_ip_address.s_addr = INADDR_USER_SELECT; 673821f7c56Syasuoka 674821f7c56Syasuoka 6750fbf3537Syasuoka if (ppp->realm_framed_ip_address.s_addr == INADDR_USER_SELECT) { 676f0a4e295Syasuoka /* Use NAS_SELECT if USER_SELECT is not allowed by the config */ 677821f7c56Syasuoka if (!ppp_ipcp(ppp)->allow_user_select) 6780fbf3537Syasuoka ppp->realm_framed_ip_address.s_addr = INADDR_NAS_SELECT; 6790fbf3537Syasuoka } 6800fbf3537Syasuoka NPPPD_DBG((LOG_DEBUG, "%s() = %s", __func__, 6810fbf3537Syasuoka inet_ntoa(ppp->realm_framed_ip_address))); 6820fbf3537Syasuoka 6830fbf3537Syasuoka return &ppp->realm_framed_ip_address; 6840fbf3537Syasuoka } 6850fbf3537Syasuoka 6860fbf3537Syasuoka /** XXX */ 6870fbf3537Syasuoka int 6880fbf3537Syasuoka npppd_check_calling_number(npppd *_this, npppd_ppp *ppp) 6890fbf3537Syasuoka { 690821f7c56Syasuoka struct tunnconf *conf; 691821f7c56Syasuoka int lnumber, rval; 6920fbf3537Syasuoka char number[NPPPD_PHONE_NUMBER_LEN + 1]; 6930fbf3537Syasuoka 694821f7c56Syasuoka conf = ppp_get_tunnconf(ppp); 695821f7c56Syasuoka if (conf->callnum_check != 0) { 6960fbf3537Syasuoka lnumber = sizeof(number); 6970fbf3537Syasuoka if ((rval = npppd_auth_get_calling_number(ppp->realm, 698821f7c56Syasuoka ppp->username, number, &lnumber)) == 0) 6990fbf3537Syasuoka return 7000fbf3537Syasuoka (strcmp(number, ppp->calling_number) == 0)? 1 : 0; 701821f7c56Syasuoka if ((conf->callnum_check & NPPPD_CALLNUM_CHECK_STRICT) != 0) 7020fbf3537Syasuoka return 0; 7030fbf3537Syasuoka } 7040fbf3537Syasuoka 7050fbf3537Syasuoka return 1; 7060fbf3537Syasuoka } 7070fbf3537Syasuoka 7080fbf3537Syasuoka /** 709f0a4e295Syasuoka * This function finds a {@link npppd_ppp} instance that is assigned the 710f0a4e295Syasuoka * specified ip address and returns it 711f0a4e295Syasuoka * @param ipaddr IP Address(Specify in network byte order) 7120fbf3537Syasuoka */ 7130fbf3537Syasuoka npppd_ppp * 7140fbf3537Syasuoka npppd_get_ppp_by_ip(npppd *_this, struct in_addr ipaddr) 7150fbf3537Syasuoka { 7160fbf3537Syasuoka struct sockaddr_npppd *snp; 7170fbf3537Syasuoka struct radish *rdp; 718f0a4e295Syasuoka struct sockaddr_in npppd_get_ppp_by_ip_sin4; 7190fbf3537Syasuoka 720f0a4e295Syasuoka npppd_get_ppp_by_ip_sin4.sin_family = AF_INET; 721f0a4e295Syasuoka npppd_get_ppp_by_ip_sin4.sin_len = sizeof(struct sockaddr_in); 7220fbf3537Syasuoka npppd_get_ppp_by_ip_sin4.sin_addr = ipaddr; 7230fbf3537Syasuoka if (_this->rd == NULL) 724f0a4e295Syasuoka return NULL; /* no radix tree on startup */ 7250fbf3537Syasuoka if (rd_match((struct sockaddr *)&npppd_get_ppp_by_ip_sin4, _this->rd, 7260fbf3537Syasuoka &rdp)) { 7270fbf3537Syasuoka snp = rdp->rd_rtent; 7280fbf3537Syasuoka if (snp->snp_type == SNP_PPP) 7290fbf3537Syasuoka return snp->snp_data_ptr; 7300fbf3537Syasuoka } 7310fbf3537Syasuoka return NULL; 7320fbf3537Syasuoka } 7330fbf3537Syasuoka 7340fbf3537Syasuoka /** 735f0a4e295Syasuoka * This function finds {@link npppd_ppp} instances that are authenticated 736f0a4e295Syasuoka * as the specified username and returns them as a {@link slist} list. 737f0a4e295Syasuoka * @param username PPP Username. 738f0a4e295Syasuoka * @return {@link slist} that contans the {@link npppd_ppp} instances. 739f0a4e295Syasuoka * NULL may be returned if no instance has been found. 7400fbf3537Syasuoka */ 74134682664Syasuoka static slist * 7420fbf3537Syasuoka npppd_get_ppp_by_user(npppd *_this, const char *username) 7430fbf3537Syasuoka { 7440fbf3537Syasuoka hash_link *hl; 7450fbf3537Syasuoka 7460fbf3537Syasuoka if ((hl = hash_lookup(_this->map_user_ppp, username)) != NULL) 7470fbf3537Syasuoka return hl->item; 7480fbf3537Syasuoka 7490fbf3537Syasuoka return NULL; 7500fbf3537Syasuoka } 7510fbf3537Syasuoka 7520fbf3537Syasuoka /** 753f0a4e295Syasuoka * This function finds a {@link npppd_ppp} instance that matches the specified 754f0a4e295Syasuoka * ppp id and returns it. 755f0a4e295Syasuoka * @param id {@link npppd_ppp#id ppp's id} 756f0a4e295Syasuoka * @return This function returns the pointer if the instance which has 757f0a4e295Syasuoka * specified ID is found, otherwise it returns NULL. 7580fbf3537Syasuoka */ 7590fbf3537Syasuoka npppd_ppp * 760363e4d4bSyasuoka npppd_get_ppp_by_id(npppd *_this, u_int ppp_id) 7610fbf3537Syasuoka { 7620fbf3537Syasuoka slist users; 7630fbf3537Syasuoka npppd_ppp *ppp0, *ppp; 7640fbf3537Syasuoka 7650fbf3537Syasuoka NPPPD_ASSERT(_this != NULL); 7660fbf3537Syasuoka 7670fbf3537Syasuoka ppp = NULL; 7680fbf3537Syasuoka slist_init(&users); 7690fbf3537Syasuoka if (npppd_get_all_users(_this, &users) != 0) { 7700fbf3537Syasuoka log_printf(LOG_WARNING, 7710fbf3537Syasuoka "npppd_get_all_users() failed in %s()", __func__); 7720fbf3537Syasuoka } else { 773f0a4e295Syasuoka /* FIXME: This linear search eats CPU. */ 7740fbf3537Syasuoka for (slist_itr_first(&users); slist_itr_has_next(&users); ) { 7750fbf3537Syasuoka ppp0 = slist_itr_next(&users); 7760fbf3537Syasuoka if (ppp0->id == ppp_id) { 7770fbf3537Syasuoka ppp = ppp0; 7780fbf3537Syasuoka break; 7790fbf3537Syasuoka } 7800fbf3537Syasuoka } 7810fbf3537Syasuoka } 7820fbf3537Syasuoka slist_fini(&users); 7830fbf3537Syasuoka 7840fbf3537Syasuoka return ppp; 7850fbf3537Syasuoka } 7860fbf3537Syasuoka 7870fbf3537Syasuoka /** 788f0a4e295Syasuoka * Checks whether the user reaches the maximum session limit 789f0a4e295Syasuoka * (user_max_serssion). 790f0a4e295Syasuoka * @return This function returns 1(true) if the user does not reach the 791f0a4e295Syasuoka * limit, otherwise it returns 0(false). 7920fbf3537Syasuoka */ 7930fbf3537Syasuoka int 7940fbf3537Syasuoka npppd_check_user_max_session(npppd *_this, npppd_ppp *ppp) 7950fbf3537Syasuoka { 7960fbf3537Syasuoka int count; 7970fbf3537Syasuoka npppd_ppp *ppp1; 7980fbf3537Syasuoka slist *uppp; 7990fbf3537Syasuoka 800f0a4e295Syasuoka /* user_max_session == 0 means unlimit */ 801e43db91eSyasuoka if (_this->conf.user_max_session == 0) 8020fbf3537Syasuoka return 1; 8030fbf3537Syasuoka 8040fbf3537Syasuoka count = 0; 8050fbf3537Syasuoka if ((uppp = npppd_get_ppp_by_user(_this, ppp->username)) != NULL) { 8060fbf3537Syasuoka for (slist_itr_first(uppp); slist_itr_has_next(uppp); ) { 8070fbf3537Syasuoka ppp1 = slist_itr_next(uppp); 8080fbf3537Syasuoka if (strcmp(ppp_iface(ppp)->ifname, 8090fbf3537Syasuoka ppp_iface(ppp1)->ifname) == 0) 8100fbf3537Syasuoka count++; 8110fbf3537Syasuoka } 8120fbf3537Syasuoka } 8130fbf3537Syasuoka 814e43db91eSyasuoka return (count < _this->conf.user_max_session)? 1 : 0; 8150fbf3537Syasuoka } 8160fbf3537Syasuoka 8170fbf3537Syasuoka /*********************************************************************** 818f0a4e295Syasuoka * Network I/O ralated functions. 8190fbf3537Syasuoka ***********************************************************************/ 8200fbf3537Syasuoka /** 821f0a4e295Syasuoka * Call this function to output packets to the network(tun). This function 822f0a4e295Syasuoka * currently assumes the packet is a IPv4 datagram. 8230fbf3537Syasuoka */ 8240fbf3537Syasuoka void 8250fbf3537Syasuoka npppd_network_output(npppd *_this, npppd_ppp *ppp, int proto, u_char *pktp, 8260fbf3537Syasuoka int lpktp) 8270fbf3537Syasuoka { 8280fbf3537Syasuoka struct ip *pip; 8290fbf3537Syasuoka int lbuf; 830f0a4e295Syasuoka u_char buf[256]; /* enough size for TCP/IP header */ 8310fbf3537Syasuoka 8320fbf3537Syasuoka NPPPD_ASSERT(ppp != NULL); 8330fbf3537Syasuoka 8340fbf3537Syasuoka if (!ppp_ip_assigned(ppp)) 8350fbf3537Syasuoka return; 8360fbf3537Syasuoka 8370fbf3537Syasuoka if (lpktp < sizeof(struct ip)) { 8380fbf3537Syasuoka ppp_log(ppp, LOG_DEBUG, "Received IP packet is too small"); 8390fbf3537Syasuoka return; 8400fbf3537Syasuoka } 841dbad4650Sderaadt lbuf = MINIMUM(lpktp, sizeof(buf)); 8420fbf3537Syasuoka if (!ALIGNED_POINTER(pktp, struct ip)) { 8430fbf3537Syasuoka memcpy(buf, pktp, lbuf); 8440fbf3537Syasuoka pip = (struct ip *)buf; 8450fbf3537Syasuoka } else { 8460fbf3537Syasuoka pip = (struct ip *)pktp; 8470fbf3537Syasuoka } 8480fbf3537Syasuoka 8493b5b2d97Syasuoka if (ppp->ingress_filter != 0 && 8503b5b2d97Syasuoka (pip->ip_src.s_addr & ppp->ppp_framed_ip_netmask.s_addr) 8513b5b2d97Syasuoka != (ppp->ppp_framed_ip_address.s_addr & 8520fbf3537Syasuoka ppp->ppp_framed_ip_netmask.s_addr)) { 8530fbf3537Syasuoka char logbuf[80]; 8540fbf3537Syasuoka strlcpy(logbuf, inet_ntoa(pip->ip_dst), sizeof(logbuf)); 8550fbf3537Syasuoka ppp_log(ppp, LOG_INFO, 8560fbf3537Syasuoka "Drop packet by ingress filter. %s => %s", 8570fbf3537Syasuoka inet_ntoa(pip->ip_src), logbuf); 8580fbf3537Syasuoka 8590fbf3537Syasuoka return; 8600fbf3537Syasuoka } 8610fbf3537Syasuoka if (ppp->timeout_sec > 0 && !ip_is_idle_packet(pip, lbuf)) 8620fbf3537Syasuoka ppp_reset_idle_timeout(ppp); 8630fbf3537Syasuoka 8640fbf3537Syasuoka #ifndef NO_ADJUST_MSS 8650fbf3537Syasuoka if (ppp->adjust_mss) { 8660fbf3537Syasuoka if (lpktp == lbuf) { 8670fbf3537Syasuoka /* 868f0a4e295Syasuoka * We can assume the packet length is less than 869f0a4e295Syasuoka * sizeof(buf). 8700fbf3537Syasuoka */ 8710fbf3537Syasuoka if (!ALIGNED_POINTER(pktp, struct ip)) 8720fbf3537Syasuoka pktp = buf; 8730fbf3537Syasuoka adjust_tcp_mss(pktp, lpktp, MRU_IPMTU(ppp->peer_mru)); 8740fbf3537Syasuoka } 8750fbf3537Syasuoka } 8760fbf3537Syasuoka #endif 8770fbf3537Syasuoka npppd_iface_write(ppp_iface(ppp), proto, pktp, lpktp); 8780fbf3537Syasuoka } 8790fbf3537Syasuoka 8800fbf3537Syasuoka #ifdef USE_NPPPD_PIPEX 881f0a4e295Syasuoka /*********************************************************************** 882f0a4e295Syasuoka * PIPEX related functions 883f0a4e295Syasuoka ***********************************************************************/ 8840fbf3537Syasuoka static void 8850fbf3537Syasuoka pipex_setup_common(npppd_ppp *ppp, struct pipex_session_req *req) 8860fbf3537Syasuoka { 8870fbf3537Syasuoka memset(req, 0, sizeof(*req)); 8880fbf3537Syasuoka if (psm_opt_is_accepted(&ppp->lcp, acfc)) 8890fbf3537Syasuoka req->pr_ppp_flags |= PIPEX_PPP_ACFC_ENABLED; 8900fbf3537Syasuoka if (psm_peer_opt_is_accepted(&ppp->lcp, acfc)) 8910fbf3537Syasuoka req->pr_ppp_flags |= PIPEX_PPP_ACFC_ACCEPTED; 8920fbf3537Syasuoka 8930fbf3537Syasuoka if (psm_peer_opt_is_accepted(&ppp->lcp, pfc)) 8940fbf3537Syasuoka req->pr_ppp_flags |= PIPEX_PPP_PFC_ACCEPTED; 8950fbf3537Syasuoka if (psm_opt_is_accepted(&ppp->lcp, pfc)) 8960fbf3537Syasuoka req->pr_ppp_flags |= PIPEX_PPP_PFC_ENABLED; 8970fbf3537Syasuoka 8980fbf3537Syasuoka if (ppp->has_acf != 0) 8990fbf3537Syasuoka req->pr_ppp_flags |= PIPEX_PPP_HAS_ACF; 9000fbf3537Syasuoka 9010fbf3537Syasuoka if (ppp->adjust_mss != 0) 9020fbf3537Syasuoka req->pr_ppp_flags |= PIPEX_PPP_ADJUST_TCPMSS; 9033b5b2d97Syasuoka if (ppp->ingress_filter != 0) 9043b5b2d97Syasuoka req->pr_ppp_flags |= PIPEX_PPP_INGRESS_FILTER; 9050fbf3537Syasuoka 906cd8e09b9Sdlg req->pr_ip_srcaddr = ppp->pppd->iface[0].ip4addr; 9070fbf3537Syasuoka req->pr_ip_address = ppp->ppp_framed_ip_address; 9080fbf3537Syasuoka req->pr_ip_netmask = ppp->ppp_framed_ip_netmask; 9090fbf3537Syasuoka req->pr_peer_mru = ppp->peer_mru; 9100fbf3537Syasuoka req->pr_ppp_id = ppp->id; 9110fbf3537Syasuoka 9120fbf3537Syasuoka req->pr_timeout_sec = ppp->timeout_sec; 9130fbf3537Syasuoka 9140fbf3537Syasuoka #ifdef USE_NPPPD_MPPE 9150fbf3537Syasuoka req->pr_ccp_id = ppp->ccp.fsm.id; 916de0a2dd6Syasuoka if (ppp->mppe.send.keybits > 0) { 9170fbf3537Syasuoka memcpy(req->pr_mppe_send.master_key, 918de0a2dd6Syasuoka ppp->mppe.send.master_key, 919de0a2dd6Syasuoka sizeof(req->pr_mppe_send.master_key)); 9200fbf3537Syasuoka req->pr_mppe_send.stateless = ppp->mppe.send.stateless; 9210fbf3537Syasuoka req->pr_mppe_send.keylenbits = ppp->mppe.send.keybits; 922de0a2dd6Syasuoka req->pr_ppp_flags |= PIPEX_PPP_MPPE_ENABLED; 923de0a2dd6Syasuoka } 924de0a2dd6Syasuoka if (ppp->mppe.recv.keybits > 0) { 9250fbf3537Syasuoka memcpy(req->pr_mppe_recv.master_key, 926de0a2dd6Syasuoka ppp->mppe.recv.master_key, 927de0a2dd6Syasuoka sizeof(req->pr_mppe_recv.master_key)); 9280fbf3537Syasuoka req->pr_mppe_recv.stateless = ppp->mppe.recv.stateless; 9290fbf3537Syasuoka req->pr_mppe_recv.keylenbits = ppp->mppe.recv.keybits; 9300fbf3537Syasuoka req->pr_ppp_flags |= PIPEX_PPP_MPPE_ACCEPTED; 9310fbf3537Syasuoka } 9320fbf3537Syasuoka if (ppp->mppe.required) 9330fbf3537Syasuoka req->pr_ppp_flags |= PIPEX_PPP_MPPE_REQUIRED; 9340fbf3537Syasuoka #endif /* USE_NPPPD_MPPE */ 9350fbf3537Syasuoka } 9360fbf3537Syasuoka 937f0a4e295Syasuoka /** Enable PIPEX of the {@link npppd_ppp ppp} */ 9380fbf3537Syasuoka int 9390fbf3537Syasuoka npppd_ppp_pipex_enable(npppd *_this, npppd_ppp *ppp) 9400fbf3537Syasuoka { 9410fbf3537Syasuoka struct pipex_session_req req; 9420fbf3537Syasuoka #ifdef USE_NPPPD_PPPOE 9430fbf3537Syasuoka pppoe_session *pppoe; 9440fbf3537Syasuoka #endif 9450fbf3537Syasuoka #ifdef USE_NPPPD_PPTP 9460fbf3537Syasuoka pptp_call *call; 9470fbf3537Syasuoka #endif 948886d2b78Syasuoka #ifdef USE_NPPPD_L2TP 949886d2b78Syasuoka l2tp_call *l2tp; 950886d2b78Syasuoka l2tp_ctrl *l2tpctrl; 951886d2b78Syasuoka #endif 9520fbf3537Syasuoka int error; 9530fbf3537Syasuoka 9540fbf3537Syasuoka NPPPD_ASSERT(ppp != NULL); 9550fbf3537Syasuoka NPPPD_ASSERT(ppp->phy_context != NULL); 9560fbf3537Syasuoka NPPPD_ASSERT(ppp->use_pipex != 0); 9570fbf3537Syasuoka 9580fbf3537Syasuoka pipex_setup_common(ppp, &req); 9590fbf3537Syasuoka 9600fbf3537Syasuoka switch (ppp->tunnel_type) { 9610fbf3537Syasuoka #ifdef USE_NPPPD_PPPOE 962821f7c56Syasuoka case NPPPD_TUNNEL_PPPOE: 963886d2b78Syasuoka { 964886d2b78Syasuoka struct sockaddr *sa; 965886d2b78Syasuoka struct ether_header *eh; 9660fbf3537Syasuoka pppoe = (pppoe_session *)ppp->phy_context; 9670fbf3537Syasuoka 968f0a4e295Syasuoka /* PPPoE specific informations */ 9690fbf3537Syasuoka req.pr_protocol = PIPEX_PROTO_PPPOE; 9700fbf3537Syasuoka req.pr_session_id = pppoe->session_id; 9710fbf3537Syasuoka req.pr_peer_session_id = 0; 9720fbf3537Syasuoka strlcpy(req.pr_proto.pppoe.over_ifname, 9730fbf3537Syasuoka pppoe_session_listen_ifname(pppoe), 9740fbf3537Syasuoka sizeof(req.pr_proto.pppoe.over_ifname)); 975886d2b78Syasuoka 976bdfe8fd0Syasuoka sa = (struct sockaddr *)&req.pr_peer_address; 977886d2b78Syasuoka sa->sa_family = AF_UNSPEC; 978886d2b78Syasuoka sa->sa_len = sizeof(struct sockaddr); 979886d2b78Syasuoka 980886d2b78Syasuoka eh = (struct ether_header *)sa->sa_data; 981886d2b78Syasuoka eh->ether_type = htons(ETHERTYPE_PPPOE); 982886d2b78Syasuoka memcpy(eh->ether_dhost, pppoe->ether_addr, ETHER_ADDR_LEN); 983886d2b78Syasuoka memset(eh->ether_shost, 0, ETHER_ADDR_LEN); 9840fbf3537Syasuoka 9850fbf3537Syasuoka break; 986886d2b78Syasuoka } 9870fbf3537Syasuoka #endif 9880fbf3537Syasuoka #ifdef USE_NPPPD_PPTP 989821f7c56Syasuoka case NPPPD_TUNNEL_PPTP: 9900fbf3537Syasuoka call = (pptp_call *)ppp->phy_context; 9910fbf3537Syasuoka 992f0a4e295Syasuoka /* PPTP specific informations */ 9930fbf3537Syasuoka req.pr_session_id = call->id; 9940fbf3537Syasuoka req.pr_protocol = PIPEX_PROTO_PPTP; 9950fbf3537Syasuoka 9960fbf3537Syasuoka req.pr_peer_session_id = call->peers_call_id; 9970fbf3537Syasuoka req.pr_proto.pptp.snd_nxt = call->snd_nxt; 9980fbf3537Syasuoka req.pr_proto.pptp.snd_una = call->snd_una; 9990fbf3537Syasuoka req.pr_proto.pptp.rcv_nxt = call->rcv_nxt; 10000fbf3537Syasuoka req.pr_proto.pptp.rcv_acked = call->rcv_acked; 10010fbf3537Syasuoka req.pr_proto.pptp.winsz = call->winsz; 10020fbf3537Syasuoka req.pr_proto.pptp.maxwinsz = call->maxwinsz; 10030fbf3537Syasuoka req.pr_proto.pptp.peer_maxwinsz = call->peers_maxwinsz; 10040fbf3537Syasuoka 10050fbf3537Syasuoka NPPPD_ASSERT(call->ctrl->peer.ss_family == AF_INET); 10060fbf3537Syasuoka NPPPD_ASSERT(call->ctrl->our.ss_family == AF_INET); 1007886d2b78Syasuoka 1008bdfe8fd0Syasuoka memcpy(&req.pr_peer_address, &call->ctrl->peer, 1009886d2b78Syasuoka call->ctrl->peer.ss_len); 1010bdfe8fd0Syasuoka memcpy(&req.pr_local_address, &call->ctrl->our, 1011886d2b78Syasuoka call->ctrl->our.ss_len); 1012886d2b78Syasuoka break; 1013886d2b78Syasuoka #endif 1014886d2b78Syasuoka #ifdef USE_NPPPD_L2TP 1015821f7c56Syasuoka case NPPPD_TUNNEL_L2TP: 1016886d2b78Syasuoka l2tp = (l2tp_call *)ppp->phy_context; 1017886d2b78Syasuoka l2tpctrl = l2tp->ctrl; 1018886d2b78Syasuoka 1019886d2b78Syasuoka /* L2TPv2 specific context */ 1020886d2b78Syasuoka /* Session KEYS */ 1021886d2b78Syasuoka req.pr_protocol = PIPEX_PROTO_L2TP; 1022886d2b78Syasuoka req.pr_proto.l2tp.tunnel_id = l2tpctrl->tunnel_id; 1023886d2b78Syasuoka req.pr_proto.l2tp.peer_tunnel_id = l2tpctrl->peer_tunnel_id; 1024886d2b78Syasuoka req.pr_session_id = l2tp->session_id; 1025886d2b78Syasuoka req.pr_peer_session_id = l2tp->peer_session_id; 1026886d2b78Syasuoka 1027886d2b78Syasuoka if (l2tpctrl->data_use_seq) 1028886d2b78Syasuoka req.pr_proto.l2tp.option_flags |= 1029886d2b78Syasuoka PIPEX_L2TP_USE_SEQUENCING; 1030886d2b78Syasuoka 1031886d2b78Syasuoka /* transmission control contexts */ 1032886d2b78Syasuoka req.pr_proto.l2tp.ns_nxt = l2tp->snd_nxt; 1033886d2b78Syasuoka req.pr_proto.l2tp.nr_nxt = l2tp->rcv_nxt; 1034886d2b78Syasuoka 1035bdfe8fd0Syasuoka memcpy(&req.pr_peer_address, &l2tpctrl->peer, 1036886d2b78Syasuoka l2tpctrl->peer.ss_len); 1037bdfe8fd0Syasuoka memcpy(&req.pr_local_address, &l2tpctrl->sock, 1038886d2b78Syasuoka l2tpctrl->sock.ss_len); 1039a5018c90Syasuoka #ifdef USE_SA_COOKIE 1040a5018c90Syasuoka if (l2tpctrl->sa_cookie != NULL) { 1041a5018c90Syasuoka req.pr_proto.l2tp.ipsecflowinfo = 1042a5018c90Syasuoka ((struct in_ipsec_sa_cookie *)l2tpctrl->sa_cookie) 1043a5018c90Syasuoka ->ipsecflow; 1044a5018c90Syasuoka } 1045886d2b78Syasuoka #endif 10460fbf3537Syasuoka break; 10470fbf3537Syasuoka #endif 10480fbf3537Syasuoka default: 10490fbf3537Syasuoka return 1; 10500fbf3537Syasuoka } 10510fbf3537Syasuoka 10520fbf3537Syasuoka if ((error = ioctl(_this->iface[ppp->ifidx].devf, PIPEXASESSION, &req)) 10530fbf3537Syasuoka != 0) { 10540fbf3537Syasuoka if (errno == ENXIO) /* pipex is disabled on runtime */ 10550fbf3537Syasuoka error = 0; 10560fbf3537Syasuoka ppp->pipex_enabled = 0; 10570fbf3537Syasuoka return error; 10580fbf3537Syasuoka } 10590fbf3537Syasuoka 1060cd8e09b9Sdlg if (_this->iface[ppp->ifidx].using_pppx) { 1061cd8e09b9Sdlg struct pipex_session_descr_req descr_req; 1062cd8e09b9Sdlg 1063cd8e09b9Sdlg descr_req.pdr_protocol = req.pr_protocol; 1064cd8e09b9Sdlg descr_req.pdr_session_id = req.pr_session_id; 1065cd8e09b9Sdlg memset(descr_req.pdr_descr, 0, sizeof(descr_req.pdr_descr)); 1066cd8e09b9Sdlg strlcpy(descr_req.pdr_descr, ppp->username, sizeof(descr_req.pdr_descr)); 1067cd8e09b9Sdlg error = ioctl(_this->iface[ppp->ifidx].devf, PIPEXSIFDESCR, &descr_req); 1068cd8e09b9Sdlg if (error != 0) { 1069cd8e09b9Sdlg log_printf(LOG_WARNING, "PIPEXSIFDESCR(%s) failed: %d\n", ppp->username, error); 1070cd8e09b9Sdlg } 1071cd8e09b9Sdlg } 1072cd8e09b9Sdlg 10730fbf3537Syasuoka ppp->pipex_enabled = 1; 10740fbf3537Syasuoka if (ppp->timeout_sec > 0) { 1075f0a4e295Syasuoka /* Stop the npppd's idle-timer. We use pipex's idle-timer */ 10760fbf3537Syasuoka ppp->timeout_sec = 0; 10770fbf3537Syasuoka ppp_reset_idle_timeout(ppp); 10780fbf3537Syasuoka } 10790fbf3537Syasuoka 10800fbf3537Syasuoka return error; 10810fbf3537Syasuoka } 10820fbf3537Syasuoka 1083f0a4e295Syasuoka /** Disable PIPEX of the {@link npppd_ppp ppp} */ 10840fbf3537Syasuoka int 10850fbf3537Syasuoka npppd_ppp_pipex_disable(npppd *_this, npppd_ppp *ppp) 10860fbf3537Syasuoka { 10870fbf3537Syasuoka struct pipex_session_close_req req; 10880fbf3537Syasuoka #ifdef USE_NPPPD_PPPOE 10890fbf3537Syasuoka pppoe_session *pppoe; 10900fbf3537Syasuoka #endif 10910fbf3537Syasuoka #ifdef USE_NPPPD_PPTP 10920fbf3537Syasuoka pptp_call *call; 10930fbf3537Syasuoka #endif 1094886d2b78Syasuoka #ifdef USE_NPPPD_L2TP 1095886d2b78Syasuoka l2tp_call *l2tp; 1096886d2b78Syasuoka #endif 10970fbf3537Syasuoka int error; 10980fbf3537Syasuoka 10990fbf3537Syasuoka if (ppp->pipex_started == 0) 11000fbf3537Syasuoka return 0; /* not started */ 11010fbf3537Syasuoka 11020fbf3537Syasuoka bzero(&req, sizeof(req)); 11030fbf3537Syasuoka switch(ppp->tunnel_type) { 11040fbf3537Syasuoka #ifdef USE_NPPPD_PPPOE 1105821f7c56Syasuoka case NPPPD_TUNNEL_PPPOE: 11060fbf3537Syasuoka pppoe = (pppoe_session *)ppp->phy_context; 11070fbf3537Syasuoka 1108f0a4e295Syasuoka /* PPPoE specific informations */ 11090fbf3537Syasuoka req.pcr_protocol = PIPEX_PROTO_PPPOE; 11100fbf3537Syasuoka req.pcr_session_id = pppoe->session_id; 11110fbf3537Syasuoka break; 11120fbf3537Syasuoka #endif 11130fbf3537Syasuoka #ifdef USE_NPPPD_PPTP 1114821f7c56Syasuoka case NPPPD_TUNNEL_PPTP: 11150fbf3537Syasuoka call = (pptp_call *)ppp->phy_context; 11160fbf3537Syasuoka 1117f0a4e295Syasuoka /* PPTP specific informations */ 11180fbf3537Syasuoka req.pcr_session_id = call->id; 11190fbf3537Syasuoka req.pcr_protocol = PIPEX_PROTO_PPTP; 11200fbf3537Syasuoka break; 11210fbf3537Syasuoka #endif 1122fd218b06Smarkus #ifdef USE_NPPPD_L2TP 1123821f7c56Syasuoka case NPPPD_TUNNEL_L2TP: 1124fd218b06Smarkus l2tp = (l2tp_call *)ppp->phy_context; 1125fd218b06Smarkus 1126fd218b06Smarkus /* L2TP specific context */ 1127fd218b06Smarkus req.pcr_session_id = l2tp->session_id; 1128fd218b06Smarkus req.pcr_protocol = PIPEX_PROTO_L2TP; 1129fd218b06Smarkus break; 1130fd218b06Smarkus #endif 11310fbf3537Syasuoka default: 11320fbf3537Syasuoka return 1; 11330fbf3537Syasuoka } 11340fbf3537Syasuoka 11350fbf3537Syasuoka error = ioctl(_this->iface[ppp->ifidx].devf, PIPEXDSESSION, &req); 11360fbf3537Syasuoka if (error == 0) { 11370fbf3537Syasuoka ppp->ipackets += req.pcr_stat.ipackets; 11380fbf3537Syasuoka ppp->opackets += req.pcr_stat.opackets; 11390fbf3537Syasuoka ppp->ierrors += req.pcr_stat.ierrors; 11400fbf3537Syasuoka ppp->oerrors += req.pcr_stat.oerrors; 11410fbf3537Syasuoka ppp->ibytes += req.pcr_stat.ibytes; 11420fbf3537Syasuoka ppp->obytes += req.pcr_stat.obytes; 11430fbf3537Syasuoka ppp->pipex_enabled = 0; 11440fbf3537Syasuoka } 11450fbf3537Syasuoka 11460fbf3537Syasuoka return error; 11470fbf3537Syasuoka } 11480fbf3537Syasuoka 1149f0a4e295Syasuoka /* XXX: s/npppd_ppp_pipex_ip_disable/npppd_ppp_pipex_stop/ ?? */ 1150f0a4e295Syasuoka 1151f0a4e295Syasuoka /** Stop PIPEX of the {@link npppd_ppp ppp} */ 11520fbf3537Syasuoka static int 11530fbf3537Syasuoka npppd_ppp_pipex_ip_disable(npppd *_this, npppd_ppp *ppp) 11540fbf3537Syasuoka { 11550fbf3537Syasuoka struct pipex_session_config_req req; 11560fbf3537Syasuoka #ifdef USE_NPPPD_PPPOE 11570fbf3537Syasuoka pppoe_session *pppoe; 11580fbf3537Syasuoka #endif 11590fbf3537Syasuoka #ifdef USE_NPPPD_PPTP 11600fbf3537Syasuoka pptp_call *call; 11610fbf3537Syasuoka #endif 1162886d2b78Syasuoka #ifdef USE_NPPPD_L2TP 1163886d2b78Syasuoka l2tp_call *l2tp; 1164886d2b78Syasuoka #endif 11650fbf3537Syasuoka if (ppp->pipex_started == 0) 11660fbf3537Syasuoka return 0; /* not started */ 11670fbf3537Syasuoka 11680fbf3537Syasuoka bzero(&req, sizeof(req)); 11690fbf3537Syasuoka switch(ppp->tunnel_type) { 11700fbf3537Syasuoka #ifdef USE_NPPPD_PPPOE 1171821f7c56Syasuoka case NPPPD_TUNNEL_PPPOE: 11720fbf3537Syasuoka pppoe = (pppoe_session *)ppp->phy_context; 11730fbf3537Syasuoka 1174f0a4e295Syasuoka /* PPPoE specific informations */ 11750fbf3537Syasuoka req.pcr_protocol = PIPEX_PROTO_PPPOE; 11760fbf3537Syasuoka req.pcr_session_id = pppoe->session_id; 11770fbf3537Syasuoka break; 11780fbf3537Syasuoka #endif 11790fbf3537Syasuoka #ifdef USE_NPPPD_PPTP 1180821f7c56Syasuoka case NPPPD_TUNNEL_PPTP: 11810fbf3537Syasuoka call = (pptp_call *)ppp->phy_context; 11820fbf3537Syasuoka 1183f0a4e295Syasuoka /* PPTP specific informations */ 11840fbf3537Syasuoka req.pcr_session_id = call->id; 11850fbf3537Syasuoka req.pcr_protocol = PIPEX_PROTO_PPTP; 11860fbf3537Syasuoka break; 11870fbf3537Syasuoka #endif 1188886d2b78Syasuoka #ifdef USE_NPPPD_L2TP 1189821f7c56Syasuoka case NPPPD_TUNNEL_L2TP: 1190886d2b78Syasuoka l2tp = (l2tp_call *)ppp->phy_context; 1191886d2b78Syasuoka 1192886d2b78Syasuoka /* L2TP specific context */ 1193886d2b78Syasuoka req.pcr_session_id = l2tp->session_id; 1194886d2b78Syasuoka req.pcr_protocol = PIPEX_PROTO_L2TP; 1195886d2b78Syasuoka break; 1196886d2b78Syasuoka #endif 11970fbf3537Syasuoka default: 11980fbf3537Syasuoka return 1; 11990fbf3537Syasuoka } 12000fbf3537Syasuoka req.pcr_ip_forward = 0; 12010fbf3537Syasuoka 12020fbf3537Syasuoka return ioctl(_this->iface[ppp->ifidx].devf, PIPEXCSESSION, &req); 12030fbf3537Syasuoka } 12040fbf3537Syasuoka 12050fbf3537Syasuoka static void 12060fbf3537Syasuoka pipex_periodic(npppd *_this) 12070fbf3537Syasuoka { 12080fbf3537Syasuoka struct pipex_session_list_req req; 12090fbf3537Syasuoka npppd_ppp *ppp; 1210ec8bab80Syasuoka int i, devf, error; 1211363e4d4bSyasuoka u_int ppp_id; 12120fbf3537Syasuoka slist dlist, users; 12130fbf3537Syasuoka 12140fbf3537Syasuoka slist_init(&dlist); 12150fbf3537Syasuoka slist_init(&users); 1216ec8bab80Syasuoka 1217ec8bab80Syasuoka devf = -1; 1218ec8bab80Syasuoka for (i = 0; i < nitems(_this->iface); i++) { 1219ec8bab80Syasuoka if (_this->iface[i].initialized != 0) { 1220ec8bab80Syasuoka devf = _this->iface[i].devf; 1221ec8bab80Syasuoka break; 1222ec8bab80Syasuoka } 1223ec8bab80Syasuoka } 1224ec8bab80Syasuoka if (devf >= 0) { 12250fbf3537Syasuoka do { 1226ec8bab80Syasuoka error = ioctl(devf, PIPEXGCLOSED, &req); 12270fbf3537Syasuoka if (error) { 12280fbf3537Syasuoka if (errno != ENXIO) 12290fbf3537Syasuoka log_printf(LOG_WARNING, 12300fbf3537Syasuoka "PIPEXGCLOSED failed: %m"); 12310fbf3537Syasuoka break; 12320fbf3537Syasuoka } 12330fbf3537Syasuoka for (i = 0; i < req.plr_ppp_id_count; i++) { 12340fbf3537Syasuoka ppp_id = req.plr_ppp_id[i]; 1235c46ae403Syasuoka slist_add(&dlist, (void *)(uintptr_t)ppp_id); 12360fbf3537Syasuoka } 12370fbf3537Syasuoka } while (req.plr_flags & PIPEX_LISTREQ_MORE); 1238ec8bab80Syasuoka } 12390fbf3537Syasuoka 12400fbf3537Syasuoka if (slist_length(&dlist) <= 0) 12410fbf3537Syasuoka goto pipex_done; 12420fbf3537Syasuoka if (npppd_get_all_users(_this, &users) != 0) { 12430fbf3537Syasuoka log_printf(LOG_WARNING, 12440fbf3537Syasuoka "npppd_get_all_users() failed in %s()", __func__); 12450fbf3537Syasuoka slist_fini(&users); 12460fbf3537Syasuoka goto pipex_done; 12470fbf3537Syasuoka } 12480fbf3537Syasuoka 1249f0a4e295Syasuoka /* Disconnect request */ 12500fbf3537Syasuoka slist_itr_first(&dlist); 12510fbf3537Syasuoka while (slist_itr_has_next(&dlist)) { 1252f0a4e295Syasuoka /* FIXME: Linear search by PPP Id eats CPU */ 1253c46ae403Syasuoka ppp_id = (uintptr_t)slist_itr_next(&dlist); 12540fbf3537Syasuoka slist_itr_first(&users); 12550fbf3537Syasuoka ppp = NULL; 12560fbf3537Syasuoka while (slist_itr_has_next(&users)) { 12570fbf3537Syasuoka ppp = slist_itr_next(&users); 12580fbf3537Syasuoka if (ppp_id == ppp->id) { 12590fbf3537Syasuoka /* found */ 12600fbf3537Syasuoka slist_itr_remove(&users); 12610fbf3537Syasuoka break; 12620fbf3537Syasuoka } 12630fbf3537Syasuoka ppp = NULL; 12640fbf3537Syasuoka } 12650fbf3537Syasuoka if (ppp == NULL) { 12660fbf3537Syasuoka log_printf(LOG_WARNING, 12670fbf3537Syasuoka "kernel requested a ppp down, but it's not found. " 12680fbf3537Syasuoka "ppp=%d", ppp_id); 12690fbf3537Syasuoka continue; 12700fbf3537Syasuoka } 12710fbf3537Syasuoka ppp_log(ppp, LOG_INFO, "Stop requested by the kernel"); 12728daf7599Syasuoka /* TODO: PIPEX doesn't return the disconect reason */ 12738daf7599Syasuoka #ifdef USE_NPPPD_RADIUS 12748daf7599Syasuoka ppp_set_radius_terminate_cause(ppp, 12758daf7599Syasuoka RADIUS_TERMNATE_CAUSE_IDLE_TIMEOUT); 12768daf7599Syasuoka #endif 12770fbf3537Syasuoka ppp_stop(ppp, NULL); 12780fbf3537Syasuoka } 12790fbf3537Syasuoka pipex_done: 12800fbf3537Syasuoka slist_fini(&users); 12810fbf3537Syasuoka slist_fini(&dlist); 12820fbf3537Syasuoka } 12830fbf3537Syasuoka #endif /* USE_NPPPD_PIPEX */ 12840fbf3537Syasuoka 12850fbf3537Syasuoka /*********************************************************************** 1286f0a4e295Syasuoka * IP address assignment related functions 12870fbf3537Syasuoka ***********************************************************************/ 1288f0a4e295Syasuoka /** Prepare to use IP */ 12890fbf3537Syasuoka int 12900fbf3537Syasuoka npppd_prepare_ip(npppd *_this, npppd_ppp *ppp) 12910fbf3537Syasuoka { 1292821f7c56Syasuoka 12930fbf3537Syasuoka if (ppp_ipcp(ppp) == NULL) 12940fbf3537Syasuoka return 1; 12950fbf3537Syasuoka 12960fbf3537Syasuoka npppd_get_user_framed_ip_address(_this, ppp, ppp->username); 12970fbf3537Syasuoka 12980fbf3537Syasuoka if (npppd_iface_ip_is_ready(ppp_iface(ppp))) 12990fbf3537Syasuoka ppp->ipcp.ip4_our = ppp_iface(ppp)->ip4addr; 13000fbf3537Syasuoka else if (npppd_iface_ip_is_ready(&_this->iface[0])) 13010fbf3537Syasuoka ppp->ipcp.ip4_our = _this->iface[0].ip4addr; 13020fbf3537Syasuoka else 13030fbf3537Syasuoka return -1; 1304821f7c56Syasuoka ppp->ipcp.dns_pri = ppp_ipcp(ppp)->dns_servers[0]; 1305821f7c56Syasuoka ppp->ipcp.dns_sec = ppp_ipcp(ppp)->dns_servers[1]; 1306821f7c56Syasuoka ppp->ipcp.nbns_pri = ppp_ipcp(ppp)->nbns_servers[0]; 1307821f7c56Syasuoka ppp->ipcp.nbns_sec = ppp_ipcp(ppp)->nbns_servers[1]; 13080fbf3537Syasuoka 13090fbf3537Syasuoka return 0; 13100fbf3537Syasuoka } 13110fbf3537Syasuoka 1312f0a4e295Syasuoka /** Notify stop using IP to npppd and release the resources. */ 13130fbf3537Syasuoka void 13140fbf3537Syasuoka npppd_release_ip(npppd *_this, npppd_ppp *ppp) 13150fbf3537Syasuoka { 13160fbf3537Syasuoka 13170fbf3537Syasuoka if (!ppp_ip_assigned(ppp)) 13180fbf3537Syasuoka return; 13190fbf3537Syasuoka 13200fbf3537Syasuoka npppd_set_ip_enabled(_this, ppp, 0); 13210fbf3537Syasuoka npppd_pool_release_ip(ppp->assigned_pool, ppp); 13220fbf3537Syasuoka ppp->assigned_pool = NULL; 13230fbf3537Syasuoka ppp->ppp_framed_ip_address.s_addr = 0; 13240fbf3537Syasuoka } 13250fbf3537Syasuoka 1326f0a4e295Syasuoka /** 1327f0a4e295Syasuoka * Change IP enableness. When the enableness is change, npppd will operate 1328f0a4e295Syasuoka * the route entry. 1329f0a4e295Syasuoka */ 13300fbf3537Syasuoka void 13310fbf3537Syasuoka npppd_set_ip_enabled(npppd *_this, npppd_ppp *ppp, int enabled) 13320fbf3537Syasuoka { 13330fbf3537Syasuoka int was_enabled, found; 13340fbf3537Syasuoka slist *u; 13350fbf3537Syasuoka hash_link *hl; 13360fbf3537Syasuoka npppd_ppp *ppp1; 13370fbf3537Syasuoka 13380fbf3537Syasuoka NPPPD_ASSERT(ppp_ip_assigned(ppp)); 13390fbf3537Syasuoka NPPPD_DBG((LOG_DEBUG, 13400fbf3537Syasuoka "npppd_set_ip_enabled(%s/%s, %s)", ppp->username, 13410fbf3537Syasuoka inet_ntoa(ppp->ppp_framed_ip_address), 13420fbf3537Syasuoka (enabled)?"true" : "false")); 1343f0a4e295Syasuoka 13440fbf3537Syasuoka /* 1345f0a4e295Syasuoka * Don't do anything if the enableness is not change. Changing route 1346f0a4e295Syasuoka * makes many programs will wake up and do heavy operations, it causes 1347f0a4e295Syasuoka * system overload, so we refrain useless changing route. 13480fbf3537Syasuoka */ 13490fbf3537Syasuoka enabled = (enabled)? 1 : 0; 13500fbf3537Syasuoka was_enabled = (ppp->assigned_ip4_enabled != 0)? 1 : 0; 13510fbf3537Syasuoka if (enabled == was_enabled) 13520fbf3537Syasuoka return; 1353f0a4e295Syasuoka 13540fbf3537Syasuoka ppp->assigned_ip4_enabled = enabled; 13550fbf3537Syasuoka if (enabled) { 13560fbf3537Syasuoka if (ppp->username[0] != '\0') { 13570fbf3537Syasuoka if ((u = npppd_get_ppp_by_user(_this, ppp->username)) 13580fbf3537Syasuoka == NULL) { 13590fbf3537Syasuoka if ((u = malloc(sizeof(slist))) == NULL) { 13600fbf3537Syasuoka ppp_log(ppp, LOG_ERR, 13610fbf3537Syasuoka "Out of memory on %s: %m", 13620fbf3537Syasuoka __func__); 13630fbf3537Syasuoka } else { 13640fbf3537Syasuoka slist_init(u); 13650fbf3537Syasuoka slist_set_size(u, 4); 13660fbf3537Syasuoka hash_insert(_this->map_user_ppp, 13670fbf3537Syasuoka ppp->username, u); 13680fbf3537Syasuoka NPPPD_DBG((LOG_DEBUG, 13690fbf3537Syasuoka "hash_insert(user->ppp, %s)", 13700fbf3537Syasuoka ppp->username)); 13710fbf3537Syasuoka } 13720fbf3537Syasuoka } 1373f0a4e295Syasuoka if (u != NULL) /* above malloc() may failed */ 13740fbf3537Syasuoka slist_add(u, ppp); 13750fbf3537Syasuoka } 13760fbf3537Syasuoka 13770fbf3537Syasuoka #ifndef NO_ROUTE_FOR_POOLED_ADDRESS 1378cd8e09b9Sdlg if (_this->iface[ppp->ifidx].using_pppx == 0) { 13790fbf3537Syasuoka if (ppp->snp.snp_next != NULL) 1380f0a4e295Syasuoka /* 1381f0a4e295Syasuoka * There is a blackhole route that has same 1382f0a4e295Syasuoka * address/mask. 1383f0a4e295Syasuoka */ 13840fbf3537Syasuoka in_route_delete(&ppp->ppp_framed_ip_address, 1385cd8e09b9Sdlg &ppp->ppp_framed_ip_netmask, &loop, 1386cd8e09b9Sdlg RTF_BLACKHOLE); 13870fbf3537Syasuoka /* See the comment for MRU_IPMTU() on ppp.h */ 13880fbf3537Syasuoka if (ppp->ppp_framed_ip_netmask.s_addr == 0xffffffffL) { 13890fbf3537Syasuoka in_host_route_add(&ppp->ppp_framed_ip_address, 1390cd8e09b9Sdlg &ppp_iface(ppp)->ip4addr, 1391cd8e09b9Sdlg ppp_iface(ppp)->ifname, 13920fbf3537Syasuoka MRU_IPMTU(ppp->peer_mru)); 13930fbf3537Syasuoka } else { 13940fbf3537Syasuoka in_route_add(&ppp->ppp_framed_ip_address, 13950fbf3537Syasuoka &ppp->ppp_framed_ip_netmask, 1396cd8e09b9Sdlg &ppp_iface(ppp)->ip4addr, 1397cd8e09b9Sdlg ppp_iface(ppp)->ifname, 0, 13980fbf3537Syasuoka MRU_IPMTU(ppp->peer_mru)); 13990fbf3537Syasuoka } 1400cd8e09b9Sdlg } 14010fbf3537Syasuoka #endif 14020fbf3537Syasuoka } else { 14030fbf3537Syasuoka #ifndef NO_ROUTE_FOR_POOLED_ADDRESS 1404cd8e09b9Sdlg if (_this->iface[ppp->ifidx].using_pppx == 0) { 14050fbf3537Syasuoka if (ppp->ppp_framed_ip_netmask.s_addr == 0xffffffffL) { 14060fbf3537Syasuoka in_host_route_delete(&ppp->ppp_framed_ip_address, 14070fbf3537Syasuoka &ppp_iface(ppp)->ip4addr); 14080fbf3537Syasuoka } else { 14090fbf3537Syasuoka in_route_delete(&ppp->ppp_framed_ip_address, 14100fbf3537Syasuoka &ppp->ppp_framed_ip_netmask, 14110fbf3537Syasuoka &ppp_iface(ppp)->ip4addr, 0); 14120fbf3537Syasuoka } 14130fbf3537Syasuoka if (ppp->snp.snp_next != NULL) 1414f0a4e295Syasuoka /* 1415f0a4e295Syasuoka * There is a blackhole route that has same 1416f0a4e295Syasuoka * address/mask. 1417f0a4e295Syasuoka */ 1418cd8e09b9Sdlg in_route_add(&ppp->snp.snp_addr, 1419cd8e09b9Sdlg &ppp->snp.snp_mask, &loop, LOOPBACK_IFNAME, 1420cd8e09b9Sdlg RTF_BLACKHOLE, 0); 1421cd8e09b9Sdlg } 14220fbf3537Syasuoka #endif 14230fbf3537Syasuoka if (ppp->username[0] != '\0') { 14240fbf3537Syasuoka hl = hash_lookup(_this->map_user_ppp, ppp->username); 14250fbf3537Syasuoka NPPPD_ASSERT(hl != NULL); 14260fbf3537Syasuoka if (hl == NULL) { 14270fbf3537Syasuoka ppp_log(ppp, LOG_ERR, 14280fbf3537Syasuoka "Unexpected error: cannot find user(%s) " 14290fbf3537Syasuoka "from user database", ppp->username); 14300fbf3537Syasuoka return; 14310fbf3537Syasuoka } 14320fbf3537Syasuoka found = 0; 14330fbf3537Syasuoka u = hl->item; 14340fbf3537Syasuoka for (slist_itr_first(u); slist_itr_has_next(u);) { 14350fbf3537Syasuoka ppp1 = slist_itr_next(u); 14360fbf3537Syasuoka if (ppp1 == ppp) { 14370fbf3537Syasuoka slist_itr_remove(u); 14380fbf3537Syasuoka found++; 14390fbf3537Syasuoka break; 14400fbf3537Syasuoka } 14410fbf3537Syasuoka } 14420fbf3537Syasuoka if (found == 0) { 14430fbf3537Syasuoka ppp_log(ppp, LOG_ERR, 14440fbf3537Syasuoka "Unexpected error: PPP instance is " 14450fbf3537Syasuoka "not found in the user's list."); 14460fbf3537Syasuoka } 14470fbf3537Syasuoka NPPPD_ASSERT(found != 0); 14480fbf3537Syasuoka if (slist_length(u) <= 0) { 1449f0a4e295Syasuoka /* The last PPP */ 14500fbf3537Syasuoka NPPPD_DBG((LOG_DEBUG, 14510fbf3537Syasuoka "hash_delete(user->ppp, %s)", 14520fbf3537Syasuoka ppp->username)); 14530fbf3537Syasuoka if (hash_delete(_this->map_user_ppp, 14540fbf3537Syasuoka ppp->username, 0) != 0) { 14550fbf3537Syasuoka ppp_log(ppp, LOG_ERR, 14560fbf3537Syasuoka "Unexpected error: cannot delete " 14570fbf3537Syasuoka "user(%s) from user database", 14580fbf3537Syasuoka ppp->username); 14590fbf3537Syasuoka } 14600fbf3537Syasuoka slist_fini(u); 14610fbf3537Syasuoka free(u); 14620fbf3537Syasuoka } else { 1463f0a4e295Syasuoka /* Replace the reference. */ 14640fbf3537Syasuoka ppp1 = slist_get(u, 0); 14650fbf3537Syasuoka hl->key = ppp1->username; 14660fbf3537Syasuoka } 14670fbf3537Syasuoka } 14680fbf3537Syasuoka #ifdef USE_NPPPD_PIPEX 14690fbf3537Syasuoka if (npppd_ppp_pipex_ip_disable(_this, ppp) != 0) 14700fbf3537Syasuoka ppp_log(ppp, LOG_ERR, 14710fbf3537Syasuoka "npppd_ppp_pipex_ip_disable() failed: %m"); 14720fbf3537Syasuoka #endif /* USE_NPPPD_PIPEX */ 14730fbf3537Syasuoka } 14740fbf3537Syasuoka } 14750fbf3537Syasuoka 14760fbf3537Syasuoka /** 1477f0a4e295Syasuoka * Assign the IP address. Returning "struct in_addr" is stored IP address 1478f0a4e295Syasuoka * in network byte order. 1479f0a4e295Syasuoka * @param req_ip4 IP address request to assign. If the address is used 1480f0a4e295Syasuoka * already, this function will return fail. 14810fbf3537Syasuoka */ 14820fbf3537Syasuoka int 14830fbf3537Syasuoka npppd_assign_ip_addr(npppd *_this, npppd_ppp *ppp, uint32_t req_ip4) 14840fbf3537Syasuoka { 14850fbf3537Syasuoka uint32_t ip4, ip4mask; 1486821f7c56Syasuoka int dyna, rval, fallback_dyna; 14870fbf3537Syasuoka const char *reason = "out of the pool"; 14880fbf3537Syasuoka struct sockaddr_npppd *snp; 14890fbf3537Syasuoka npppd_pool *pool; 14900fbf3537Syasuoka npppd_auth_base *realm; 14910fbf3537Syasuoka 14920fbf3537Syasuoka NPPPD_DBG((LOG_DEBUG, "%s() assigned=%s", __func__, 14930fbf3537Syasuoka (ppp_ip_assigned(ppp))? "true" : "false")); 14940fbf3537Syasuoka if (ppp_ip_assigned(ppp)) 14950fbf3537Syasuoka return 0; 14960fbf3537Syasuoka 14970fbf3537Syasuoka ip4 = INADDR_ANY; 14980fbf3537Syasuoka ip4mask = 0xffffffffL; 14990fbf3537Syasuoka realm = ppp->realm; 15000fbf3537Syasuoka dyna = 0; 15010fbf3537Syasuoka fallback_dyna = 0; 15020fbf3537Syasuoka pool = NULL; 15030fbf3537Syasuoka 15040fbf3537Syasuoka if (ppp->realm_framed_ip_address.s_addr == INADDR_USER_SELECT) { 15050fbf3537Syasuoka if (req_ip4 == INADDR_ANY) 15060fbf3537Syasuoka dyna = 1; 15070fbf3537Syasuoka } else if (ppp->realm_framed_ip_address.s_addr == INADDR_NAS_SELECT) { 15080fbf3537Syasuoka dyna = 1; 15090fbf3537Syasuoka } else { 15100fbf3537Syasuoka NPPPD_ASSERT(realm != NULL); 15110fbf3537Syasuoka fallback_dyna = 1; 15120fbf3537Syasuoka req_ip4 = ntohl(ppp->realm_framed_ip_address.s_addr); 15130fbf3537Syasuoka ip4mask = ntohl(ppp->realm_framed_ip_netmask.s_addr); 15140fbf3537Syasuoka } 15150fbf3537Syasuoka if (!dyna) { 15160fbf3537Syasuoka /* 1517f0a4e295Syasuoka * Realm requires the fixed IP address, but the address 1518f0a4e295Syasuoka * doesn't belong any address pool. Fallback to dynamic 1519f0a4e295Syasuoka * assignment. 15200fbf3537Syasuoka */ 1521821f7c56Syasuoka pool = ppp_pool(ppp); 1522821f7c56Syasuoka rval = npppd_pool_get_assignability(pool, req_ip4, ip4mask, 1523821f7c56Syasuoka &snp); 15240fbf3537Syasuoka switch (rval) { 15250fbf3537Syasuoka case ADDRESS_OK: 15260fbf3537Syasuoka if (snp->snp_type == SNP_POOL) { 15270fbf3537Syasuoka /* 1528821f7c56Syasuoka * Fixed address pool can be used only if the 1529821f7c56Syasuoka * realm specified to use it. 15300fbf3537Syasuoka */ 15310fbf3537Syasuoka if (ppp->realm_framed_ip_address 15320fbf3537Syasuoka .s_addr != INADDR_USER_SELECT) 15330fbf3537Syasuoka ip4 = req_ip4; 15340fbf3537Syasuoka break; 15350fbf3537Syasuoka } 15360fbf3537Syasuoka ppp->assign_dynapool = 1; 15370fbf3537Syasuoka ip4 = req_ip4; 15380fbf3537Syasuoka break; 15390fbf3537Syasuoka case ADDRESS_RESERVED: 15400fbf3537Syasuoka reason = "reserved"; 1541821f7c56Syasuoka break; 15420fbf3537Syasuoka case ADDRESS_OUT_OF_POOL: 15430fbf3537Syasuoka reason = "out of the pool"; 1544821f7c56Syasuoka break; 15450fbf3537Syasuoka case ADDRESS_BUSY: 15460fbf3537Syasuoka fallback_dyna = 0; 15470fbf3537Syasuoka reason = "busy"; 15480fbf3537Syasuoka break; 15490fbf3537Syasuoka default: 15500fbf3537Syasuoka case ADDRESS_INVALID: 15510fbf3537Syasuoka fallback_dyna = 0; 15520fbf3537Syasuoka reason = "invalid"; 15530fbf3537Syasuoka break; 15540fbf3537Syasuoka } 15550fbf3537Syasuoka #define IP_4OCT(v) ((0xff000000 & (v)) >> 24), ((0x00ff0000 & (v)) >> 16),\ 15560fbf3537Syasuoka ((0x0000ff00 & (v)) >> 8), (0x000000ff & (v)) 15570fbf3537Syasuoka if (ip4 == 0) { 15580fbf3537Syasuoka ppp_log(ppp, LOG_NOTICE, 15590fbf3537Syasuoka "Requested IP address (%d.%d.%d.%d)/%d " 15600fbf3537Syasuoka "is %s", IP_4OCT(req_ip4), 15610fbf3537Syasuoka netmask2prefixlen(htonl(ip4mask)), reason); 15620fbf3537Syasuoka if (fallback_dyna) 15630fbf3537Syasuoka goto dyna_assign; 15640fbf3537Syasuoka return 1; 15650fbf3537Syasuoka } 156632012184Syasuoka ppp->assigned_pool = pool; 15670fbf3537Syasuoka 15680fbf3537Syasuoka ppp->ppp_framed_ip_address.s_addr = htonl(ip4); 15690fbf3537Syasuoka ppp->ppp_framed_ip_netmask.s_addr = htonl(ip4mask); 1570b0b96f97Syasuoka ppp->acct_framed_ip_address = ppp->ppp_framed_ip_address; 15710fbf3537Syasuoka } else { 15720fbf3537Syasuoka dyna_assign: 1573821f7c56Syasuoka pool = ppp_pool(ppp); 15740fbf3537Syasuoka ip4 = npppd_pool_get_dynamic(pool, ppp); 15750fbf3537Syasuoka if (ip4 == 0) { 15760fbf3537Syasuoka ppp_log(ppp, LOG_NOTICE, 15770fbf3537Syasuoka "No free address in the pool."); 15780fbf3537Syasuoka return 1; 15790fbf3537Syasuoka } 15800fbf3537Syasuoka ppp->assigned_pool = pool; 15810fbf3537Syasuoka ppp->assign_dynapool = 1; 15820fbf3537Syasuoka ppp->ppp_framed_ip_address.s_addr = htonl(ip4); 15830fbf3537Syasuoka ppp->ppp_framed_ip_netmask.s_addr = htonl(0xffffffffL); 1584b0b96f97Syasuoka ppp->acct_framed_ip_address = ppp->ppp_framed_ip_address; 15850fbf3537Syasuoka } 15860fbf3537Syasuoka 15870fbf3537Syasuoka return npppd_pool_assign_ip(ppp->assigned_pool, ppp); 15880fbf3537Syasuoka } 15890fbf3537Syasuoka 15900fbf3537Syasuoka static void * 15910fbf3537Syasuoka rtlist_remove(slist *prtlist, struct radish *radish) 15920fbf3537Syasuoka { 15930fbf3537Syasuoka struct radish *r; 15940fbf3537Syasuoka 15950fbf3537Syasuoka slist_itr_first(prtlist); 15960fbf3537Syasuoka while (slist_itr_has_next(prtlist)) { 15970fbf3537Syasuoka r = slist_itr_next(prtlist); 15980fbf3537Syasuoka if (!sockaddr_npppd_match(radish->rd_route, r->rd_route) || 15990fbf3537Syasuoka !sockaddr_npppd_match(radish->rd_mask, r->rd_mask)) 16000fbf3537Syasuoka continue; 16010fbf3537Syasuoka 16020fbf3537Syasuoka return slist_itr_remove(prtlist); 16030fbf3537Syasuoka } 16040fbf3537Syasuoka 16050fbf3537Syasuoka return NULL; 16060fbf3537Syasuoka } 16070fbf3537Syasuoka 1608f0a4e295Syasuoka /** Set {@link ::npppd#rd the only radish of npppd} */ 16090fbf3537Syasuoka int 16100fbf3537Syasuoka npppd_set_radish(npppd *_this, void *radish_head) 16110fbf3537Syasuoka { 16120fbf3537Syasuoka int rval, delppp0, count; 16130fbf3537Syasuoka struct sockaddr_npppd *snp; 16140fbf3537Syasuoka struct radish *radish, *r; 16150fbf3537Syasuoka slist rtlist0, rtlist1, delppp; 16160fbf3537Syasuoka npppd_ppp *ppp; 16170fbf3537Syasuoka void *dummy; 16180fbf3537Syasuoka 16190fbf3537Syasuoka slist_init(&rtlist0); 16200fbf3537Syasuoka slist_init(&rtlist1); 16210fbf3537Syasuoka slist_init(&delppp); 16220fbf3537Syasuoka 16230fbf3537Syasuoka if (radish_head != NULL) { 16240fbf3537Syasuoka if (rd2slist(radish_head, &rtlist1) != 0) { 16250fbf3537Syasuoka log_printf(LOG_WARNING, "rd2slist failed: %m"); 1626f0a4e295Syasuoka goto fail; 16270fbf3537Syasuoka } 16280fbf3537Syasuoka } 16290fbf3537Syasuoka if (_this->rd != NULL) { 16300fbf3537Syasuoka if (rd2slist(_this->rd, &rtlist0) != 0) { 16310fbf3537Syasuoka log_printf(LOG_WARNING, "rd2slist failed: %m"); 1632f0a4e295Syasuoka goto fail; 16330fbf3537Syasuoka } 16340fbf3537Syasuoka } 16350fbf3537Syasuoka if (_this->rd != NULL && radish_head != NULL) { 16360fbf3537Syasuoka for (slist_itr_first(&rtlist0); slist_itr_has_next(&rtlist0);) { 16370fbf3537Syasuoka radish = slist_itr_next(&rtlist0); 16380fbf3537Syasuoka snp = radish->rd_rtent; 16390fbf3537Syasuoka /* 1640f0a4e295Syasuoka * replace the pool address 16410fbf3537Syasuoka */ 16420fbf3537Syasuoka if (snp->snp_type == SNP_POOL || 16430fbf3537Syasuoka snp->snp_type == SNP_DYN_POOL) { 16440fbf3537Syasuoka if (rd_lookup(radish->rd_route, radish->rd_mask, 16450fbf3537Syasuoka radish_head) == NULL) 16460fbf3537Syasuoka continue; 1647f0a4e295Syasuoka /* don't add */ 16480fbf3537Syasuoka rtlist_remove(&rtlist1, radish); 1649f0a4e295Syasuoka /* don't delete */ 16500fbf3537Syasuoka slist_itr_remove(&rtlist0); 16510fbf3537Syasuoka continue; 16520fbf3537Syasuoka } 16530fbf3537Syasuoka /* 1654f0a4e295Syasuoka * handle the active PPP sessions. 16550fbf3537Syasuoka */ 16560fbf3537Syasuoka NPPPD_ASSERT(snp->snp_type == SNP_PPP); 16570fbf3537Syasuoka ppp = snp->snp_data_ptr; 16580fbf3537Syasuoka 1659f0a4e295Syasuoka /* Don't delete the route of active PPP session */ 16600fbf3537Syasuoka slist_itr_remove(&rtlist0); 16610fbf3537Syasuoka 1662f0a4e295Syasuoka /* clear informations about old pool configuration */ 16630fbf3537Syasuoka snp->snp_next = NULL; 16640fbf3537Syasuoka 16650fbf3537Syasuoka delppp0 = 0; 16660fbf3537Syasuoka if (!rd_match((struct sockaddr *)snp, radish_head, &r)){ 16670fbf3537Syasuoka /* 1668f0a4e295Syasuoka * If the address doesn't belong the new pools, 1669f0a4e295Syasuoka * add the PPP session to the deletion list. 16700fbf3537Syasuoka */ 16710fbf3537Syasuoka slist_add(&delppp, snp->snp_data_ptr); 16720fbf3537Syasuoka delppp0 = 1; 16730fbf3537Syasuoka } else { 16740fbf3537Syasuoka NPPPD_ASSERT( 16750fbf3537Syasuoka ((struct sockaddr_npppd *)r->rd_rtent) 16760fbf3537Syasuoka ->snp_type == SNP_POOL || 16770fbf3537Syasuoka ((struct sockaddr_npppd *)r->rd_rtent) 16780fbf3537Syasuoka ->snp_type == SNP_DYN_POOL); 16790fbf3537Syasuoka /* 1680f0a4e295Syasuoka * If there is a pool entry that has same 1681f0a4e295Syasuoka * address/mask, then make the RADISH entry a 1682f0a4e295Syasuoka * list. Set SNP_PPP as the first in the list, 1683f0a4e295Syasuoka * set current entry in snp->snp_next and 1684f0a4e295Syasuoka * delete it. 16850fbf3537Syasuoka */ 16860fbf3537Syasuoka if (sockaddr_npppd_match( 16870fbf3537Syasuoka radish->rd_route, r->rd_route) && 16880fbf3537Syasuoka sockaddr_npppd_match( 16890fbf3537Syasuoka radish->rd_mask, r->rd_mask)) { 1690f0a4e295Syasuoka /* 1691f0a4e295Syasuoka * Releasing it, so remove it from the 1692f0a4e295Syasuoka * new routing list. 1693f0a4e295Syasuoka */ 16940fbf3537Syasuoka rtlist_remove(&rtlist1, radish); 1695f0a4e295Syasuoka /* set as snp_snp_next */ 16960fbf3537Syasuoka snp->snp_next = r->rd_rtent; 16970fbf3537Syasuoka rval = rd_delete(r->rd_route, 16980fbf3537Syasuoka r->rd_mask, radish_head, &dummy); 16990fbf3537Syasuoka NPPPD_ASSERT(rval == 0); 17000fbf3537Syasuoka } 17010fbf3537Syasuoka } 1702f0a4e295Syasuoka /* Register to the new radish */ 17030fbf3537Syasuoka rval = rd_insert(radish->rd_route, radish->rd_mask, 17040fbf3537Syasuoka radish_head, snp); 17050fbf3537Syasuoka if (rval != 0) { 17060fbf3537Syasuoka errno = rval; 17070fbf3537Syasuoka ppp_log(((npppd_ppp *)snp->snp_data_ptr), 17080fbf3537Syasuoka LOG_ERR, 17090fbf3537Syasuoka "Fatal error on %s, cannot continue " 17100fbf3537Syasuoka "this ppp session: %m", __func__); 17110fbf3537Syasuoka if (!delppp0) 17120fbf3537Syasuoka slist_add(&delppp, snp->snp_data_ptr); 17130fbf3537Syasuoka } 17140fbf3537Syasuoka } 17150fbf3537Syasuoka } 17160fbf3537Syasuoka count = 0; 17170fbf3537Syasuoka #ifndef NO_ROUTE_FOR_POOLED_ADDRESS 1718cd8e09b9Sdlg if (_this->iface[0].using_pppx == 0) { 17190fbf3537Syasuoka for (slist_itr_first(&rtlist0); slist_itr_has_next(&rtlist0);) { 17200fbf3537Syasuoka radish = slist_itr_next(&rtlist0); 17210fbf3537Syasuoka in_route_delete(&SIN(radish->rd_route)->sin_addr, 1722cd8e09b9Sdlg &SIN(radish->rd_mask)->sin_addr, &loop, 1723cd8e09b9Sdlg RTF_BLACKHOLE); 17240fbf3537Syasuoka count++; 17250fbf3537Syasuoka } 17260fbf3537Syasuoka if (count > 0) 17270fbf3537Syasuoka log_printf(LOG_INFO, 17280fbf3537Syasuoka "Deleted %d routes for old pool addresses", count); 17290fbf3537Syasuoka 17300fbf3537Syasuoka count = 0; 17310fbf3537Syasuoka for (slist_itr_first(&rtlist1); slist_itr_has_next(&rtlist1);) { 17320fbf3537Syasuoka radish = slist_itr_next(&rtlist1); 17330fbf3537Syasuoka in_route_add(&(SIN(radish->rd_route)->sin_addr), 1734cd8e09b9Sdlg &SIN(radish->rd_mask)->sin_addr, &loop, 1735cd8e09b9Sdlg LOOPBACK_IFNAME, RTF_BLACKHOLE, 0); 17360fbf3537Syasuoka count++; 17370fbf3537Syasuoka } 17380fbf3537Syasuoka if (count > 0) 17390fbf3537Syasuoka log_printf(LOG_INFO, 1740cd8e09b9Sdlg "Added %d routes for new pool addresses", 1741cd8e09b9Sdlg count); 1742cd8e09b9Sdlg } 17430fbf3537Syasuoka #endif 17440fbf3537Syasuoka slist_fini(&rtlist0); 17450fbf3537Syasuoka slist_fini(&rtlist1); 17460fbf3537Syasuoka 1747230b2897Syasuoka if (_this->rd != NULL) { 17480fbf3537Syasuoka npppd_rd_walktree_delete(_this->rd); 1749230b2897Syasuoka _this->rd = NULL; 1750230b2897Syasuoka } 175184c9ec02Syasuoka if (radish_head == NULL) 175284c9ec02Syasuoka npppd_get_all_users(_this, &delppp); 17533089d6fcSyasuoka _this->rd = radish_head; 17540fbf3537Syasuoka 17550fbf3537Syasuoka for (slist_itr_first(&delppp); slist_itr_has_next(&delppp);) { 17560fbf3537Syasuoka ppp = slist_itr_next(&delppp); 17570fbf3537Syasuoka ppp_log(ppp, LOG_NOTICE, 17580fbf3537Syasuoka "stop. IP address of this ppp is out of the pool.: %s", 17590fbf3537Syasuoka inet_ntoa(ppp->ppp_framed_ip_address)); 17600fbf3537Syasuoka ppp_stop(ppp, NULL); 17610fbf3537Syasuoka } 17620fbf3537Syasuoka slist_fini(&delppp); 17630fbf3537Syasuoka 17640fbf3537Syasuoka return 0; 1765f0a4e295Syasuoka fail: 17660fbf3537Syasuoka slist_fini(&rtlist0); 17670fbf3537Syasuoka slist_fini(&rtlist1); 17680fbf3537Syasuoka slist_fini(&delppp); 17690fbf3537Syasuoka 17700fbf3537Syasuoka return 1; 17710fbf3537Syasuoka } 17720fbf3537Syasuoka 17730fbf3537Syasuoka /** 1774f0a4e295Syasuoka * This function stores all users to {@link slist} and returns them. 1775f0a4e295Syasuoka * References to {@link ::npppd_ppp} will be stored in users. 17760fbf3537Syasuoka */ 177734682664Syasuoka static int 17780fbf3537Syasuoka npppd_get_all_users(npppd *_this, slist *users) 17790fbf3537Syasuoka { 17800fbf3537Syasuoka int rval; 17810fbf3537Syasuoka struct radish *rd; 17820fbf3537Syasuoka struct sockaddr_npppd *snp; 17830fbf3537Syasuoka slist list; 17840fbf3537Syasuoka 17850fbf3537Syasuoka NPPPD_ASSERT(_this != NULL); 17860fbf3537Syasuoka 17870fbf3537Syasuoka slist_init(&list); 178884c9ec02Syasuoka if (_this->rd == NULL) 178984c9ec02Syasuoka return 0; 17900fbf3537Syasuoka rval = rd2slist(_this->rd, &list); 17910fbf3537Syasuoka if (rval != 0) 17920fbf3537Syasuoka return rval; 17930fbf3537Syasuoka 17940fbf3537Syasuoka for (slist_itr_first(&list); slist_itr_has_next(&list);) { 17950fbf3537Syasuoka rd = slist_itr_next(&list); 17960fbf3537Syasuoka snp = rd->rd_rtent; 17970fbf3537Syasuoka if (snp->snp_type == SNP_PPP) { 17980fbf3537Syasuoka if (slist_add(users, snp->snp_data_ptr) == NULL) { 17990fbf3537Syasuoka log_printf(LOG_ERR, 18000fbf3537Syasuoka "slist_add() failed in %s: %m", __func__); 1801f0a4e295Syasuoka goto fail; 18020fbf3537Syasuoka } 18030fbf3537Syasuoka } 18040fbf3537Syasuoka } 18050fbf3537Syasuoka slist_fini(&list); 18060fbf3537Syasuoka 18070fbf3537Syasuoka return 0; 1808f0a4e295Syasuoka fail: 18090fbf3537Syasuoka slist_fini(&list); 18100fbf3537Syasuoka 18110fbf3537Syasuoka return 1; 18120fbf3537Syasuoka } 18130fbf3537Syasuoka 18140fbf3537Syasuoka static int 18150fbf3537Syasuoka rd2slist_walk(struct radish *rd, void *list0) 18160fbf3537Syasuoka { 18170fbf3537Syasuoka slist *list = list0; 18180fbf3537Syasuoka void *r; 18190fbf3537Syasuoka 18200fbf3537Syasuoka r = slist_add(list, rd); 18210fbf3537Syasuoka if (r == NULL) 18220fbf3537Syasuoka return -1; 18230fbf3537Syasuoka return 0; 18240fbf3537Syasuoka } 18250fbf3537Syasuoka static int 18260fbf3537Syasuoka rd2slist(struct radish_head *h, slist *list) 18270fbf3537Syasuoka { 18280fbf3537Syasuoka return rd_walktree(h, rd2slist_walk, list); 18290fbf3537Syasuoka } 18300fbf3537Syasuoka 18310fbf3537Syasuoka static void 18320fbf3537Syasuoka npppd_reload0(npppd *_this) 18330fbf3537Syasuoka { 1834821f7c56Syasuoka int i; 1835821f7c56Syasuoka 18360fbf3537Syasuoka npppd_reload_config(_this); 18370fbf3537Syasuoka #ifdef USE_NPPPD_ARP 18380fbf3537Syasuoka arp_set_strictintfnetwork(npppd_config_str_equali(_this, "arpd.strictintfnetwork", "true", ARPD_STRICTINTFNETWORK_DEFAULT)); 18390fbf3537Syasuoka if (npppd_config_str_equali(_this, "arpd.enabled", "true", ARPD_DEFAULT) == 1) 18400fbf3537Syasuoka arp_sock_init(); 18410fbf3537Syasuoka else 18420fbf3537Syasuoka arp_sock_fini(); 18430fbf3537Syasuoka #endif 18440fbf3537Syasuoka npppd_modules_reload(_this); 18450fbf3537Syasuoka npppd_ifaces_load_config(_this); 1846821f7c56Syasuoka npppd_update_pool_reference(_this); 18470fbf3537Syasuoka npppd_auth_finalizer_periodic(_this); 1848821f7c56Syasuoka 1849821f7c56Syasuoka for (i = 0; i < countof(_this->iface); i++) { 1850821f7c56Syasuoka if (_this->iface[i].initialized != 0 && 1851821f7c56Syasuoka _this->iface[i].started == 0) 1852821f7c56Syasuoka npppd_iface_start(&_this->iface[i]); 1853821f7c56Syasuoka } 1854821f7c56Syasuoka } 1855821f7c56Syasuoka 1856821f7c56Syasuoka static void 1857821f7c56Syasuoka npppd_update_pool_reference(npppd *_this) 1858821f7c56Syasuoka { 1859821f7c56Syasuoka int i, j; 1860821f7c56Syasuoka /* update iface to pool reference */ 1861821f7c56Syasuoka for (i = 0; i < countof(_this->iface_pool); i++) { 1862821f7c56Syasuoka _this->iface_pool[i] = NULL; 1863821f7c56Syasuoka if (_this->iface[i].initialized == 0) 1864821f7c56Syasuoka continue; 1865821f7c56Syasuoka if (_this->iface[i].ipcpconf == NULL) 1866821f7c56Syasuoka continue; /* no IPCP for this interface */ 1867821f7c56Syasuoka 1868821f7c56Syasuoka for (j = 0; j < countof(_this->pool); j++) { 1869821f7c56Syasuoka if (_this->pool[j].initialized == 0) 1870821f7c56Syasuoka continue; 1871821f7c56Syasuoka if (strcmp(_this->iface[i].ipcpconf->name, 1872821f7c56Syasuoka _this->pool[j].ipcp_name) == 0) { 1873821f7c56Syasuoka /* found the ipcp that has the pool */ 1874821f7c56Syasuoka _this->iface_pool[i] = &_this->pool[j]; 1875821f7c56Syasuoka break; 1876821f7c56Syasuoka } 1877821f7c56Syasuoka } 1878821f7c56Syasuoka } 18790fbf3537Syasuoka } 18800fbf3537Syasuoka 18810fbf3537Syasuoka /*********************************************************************** 1882f0a4e295Syasuoka * Signal handlers 18830fbf3537Syasuoka ***********************************************************************/ 18840fbf3537Syasuoka static void 18850fbf3537Syasuoka npppd_on_sighup(int fd, short ev_type, void *ctx) 18860fbf3537Syasuoka { 18870fbf3537Syasuoka npppd *_this; 18880fbf3537Syasuoka 18890fbf3537Syasuoka _this = ctx; 18900fbf3537Syasuoka #ifndef NO_DELAYED_RELOAD 18910fbf3537Syasuoka if (_this->delayed_reload > 0) 18920fbf3537Syasuoka _this->reloading_count = _this->delayed_reload; 18930fbf3537Syasuoka else 18940fbf3537Syasuoka #endif 18950fbf3537Syasuoka npppd_reload0(_this); 18960fbf3537Syasuoka } 18970fbf3537Syasuoka 18980fbf3537Syasuoka static void 18990fbf3537Syasuoka npppd_on_sigterm(int fd, short ev_type, void *ctx) 19000fbf3537Syasuoka { 19010fbf3537Syasuoka npppd *_this; 19020fbf3537Syasuoka 19030fbf3537Syasuoka _this = ctx; 19040fbf3537Syasuoka npppd_stop(_this); 19050fbf3537Syasuoka } 19060fbf3537Syasuoka 19070fbf3537Syasuoka static void 19080fbf3537Syasuoka npppd_on_sigint(int fd, short ev_type, void *ctx) 19090fbf3537Syasuoka { 19100fbf3537Syasuoka npppd *_this; 19110fbf3537Syasuoka 19120fbf3537Syasuoka _this = ctx; 19130fbf3537Syasuoka npppd_stop(_this); 19140fbf3537Syasuoka } 19150fbf3537Syasuoka 19165fefcc09Syasuoka static void 19175fefcc09Syasuoka npppd_on_sigchld(int fd, short ev_type, void *ctx) 19185fefcc09Syasuoka { 19195fefcc09Syasuoka int status; 19205fefcc09Syasuoka pid_t wpid; 19215fefcc09Syasuoka npppd *_this; 19225fefcc09Syasuoka 19235fefcc09Syasuoka _this = ctx; 19245fefcc09Syasuoka wpid = privsep_priv_pid(); 19255fefcc09Syasuoka if (wait4(wpid, &status, WNOHANG, NULL) == wpid) { 19265fefcc09Syasuoka if (WIFSIGNALED(status)) 19275fefcc09Syasuoka log_printf(LOG_WARNING, 19289a200ddfSyasuoka "privileged process exits abnormaly. signal=%d", 19295fefcc09Syasuoka WTERMSIG(status)); 19305fefcc09Syasuoka else 19315fefcc09Syasuoka log_printf(LOG_WARNING, 19329a200ddfSyasuoka "privileged process exits abnormaly. status=%d", 19335fefcc09Syasuoka WEXITSTATUS(status)); 19345fefcc09Syasuoka _this->stop_by_error = 1; 19355fefcc09Syasuoka npppd_stop(_this); 19365fefcc09Syasuoka } 19375fefcc09Syasuoka } 19380fbf3537Syasuoka /*********************************************************************** 1939f0a4e295Syasuoka * Miscellaneous functions 19400fbf3537Syasuoka ***********************************************************************/ 19410fbf3537Syasuoka static uint32_t 19420fbf3537Syasuoka str_hash(const void *ptr, int sz) 19430fbf3537Syasuoka { 19440fbf3537Syasuoka uint32_t hash = 0; 19450fbf3537Syasuoka int i, len; 19460fbf3537Syasuoka const char *str; 19470fbf3537Syasuoka 19480fbf3537Syasuoka str = ptr; 19490fbf3537Syasuoka len = strlen(str); 19500fbf3537Syasuoka for (i = 0; i < len; i++) 19510fbf3537Syasuoka hash = hash*0x1F + str[i]; 19520fbf3537Syasuoka hash = (hash << 16) ^ (hash & 0xffff); 19530fbf3537Syasuoka 19540fbf3537Syasuoka return hash % sz; 19550fbf3537Syasuoka } 19560fbf3537Syasuoka 19570fbf3537Syasuoka /** 1958f0a4e295Syasuoka * Select a authentication realm that is for given {@link ::npppd_ppp PPP}. 1959f0a4e295Syasuoka * Return 0 on success. 19600fbf3537Syasuoka */ 19610fbf3537Syasuoka int 19620fbf3537Syasuoka npppd_ppp_bind_realm(npppd *_this, npppd_ppp *ppp, const char *username, int 19630fbf3537Syasuoka eap_required) 19640fbf3537Syasuoka { 1965821f7c56Syasuoka struct confbind *bind; 19660fbf3537Syasuoka npppd_auth_base *realm = NULL, *realm0 = NULL, *realm1 = NULL; 1967821f7c56Syasuoka char buf1[MAX_USERNAME_LENGTH]; 196834379bfeSyasuoka int lsuffix, lusername, lmax; 19690fbf3537Syasuoka 19700fbf3537Syasuoka NPPPD_ASSERT(_this != NULL); 19710fbf3537Syasuoka NPPPD_ASSERT(ppp != NULL); 19720fbf3537Syasuoka NPPPD_ASSERT(username != NULL); 19730fbf3537Syasuoka 19740fbf3537Syasuoka /* 1975f0a4e295Syasuoka * If the PPP suffix is the longest, and the length of the suffix is 1976f0a4e295Syasuoka * same, select the first one. 19770fbf3537Syasuoka */ 19780fbf3537Syasuoka lusername = strlen(username); 19790fbf3537Syasuoka lmax = -1; 19800fbf3537Syasuoka realm = NULL; 19810fbf3537Syasuoka 1982821f7c56Syasuoka TAILQ_FOREACH(bind, &_this->conf.confbinds, entry) { 1983821f7c56Syasuoka if (strcmp(bind->tunnconf->name, ppp->phy_label) != 0) 19840fbf3537Syasuoka continue; 19850fbf3537Syasuoka 19860fbf3537Syasuoka realm0 = NULL; 19870fbf3537Syasuoka slist_itr_first(&_this->realms); 19880fbf3537Syasuoka while (slist_itr_has_next(&_this->realms)) { 19890fbf3537Syasuoka realm1 = slist_itr_next(&_this->realms); 19900fbf3537Syasuoka if (!npppd_auth_is_usable(realm1)) 19910fbf3537Syasuoka continue; 1992821f7c56Syasuoka if (eap_required && !npppd_auth_is_eap_capable(realm1)) 19930fbf3537Syasuoka continue; 1994821f7c56Syasuoka if (strcmp(npppd_auth_get_name(realm1), 1995821f7c56Syasuoka bind->authconf->name) == 0) { 19960fbf3537Syasuoka realm0 = realm1; 19970fbf3537Syasuoka break; 19980fbf3537Syasuoka } 19990fbf3537Syasuoka } 20000fbf3537Syasuoka if (realm0 == NULL) 20010fbf3537Syasuoka continue; 2002821f7c56Syasuoka 20030fbf3537Syasuoka lsuffix = strlen(npppd_auth_get_suffix(realm0)); 20040fbf3537Syasuoka if (lsuffix > lmax && 2005821f7c56Syasuoka (lsuffix == 0 || 2006821f7c56Syasuoka (lsuffix < lusername && strcmp(username + lusername 2007821f7c56Syasuoka - lsuffix, npppd_auth_get_suffix(realm0)) 2008821f7c56Syasuoka == 0))) { 20090fbf3537Syasuoka lmax = lsuffix; 20100fbf3537Syasuoka realm = realm0; 20110fbf3537Syasuoka } 20120fbf3537Syasuoka } 2013821f7c56Syasuoka 20140fbf3537Syasuoka if (realm == NULL) { 20150fbf3537Syasuoka log_printf(LOG_INFO, "user='%s' could not bind any realms", 20160fbf3537Syasuoka username); 20170fbf3537Syasuoka return 1; 20180fbf3537Syasuoka } 2019821f7c56Syasuoka NPPPD_DBG((LOG_DEBUG, "bind realm %s", npppd_auth_get_name(realm))); 20200fbf3537Syasuoka 20210fbf3537Syasuoka if (npppd_auth_get_type(realm) == NPPPD_AUTH_TYPE_LOCAL) 20220fbf3537Syasuoka /* hook the auto reload */ 20230fbf3537Syasuoka npppd_auth_get_user_password(realm, 20240fbf3537Syasuoka npppd_auth_username_for_auth(realm1, username, buf1), NULL, 20250fbf3537Syasuoka NULL); 20260fbf3537Syasuoka ppp->realm = realm; 20270fbf3537Syasuoka 20280fbf3537Syasuoka return 0; 20290fbf3537Syasuoka } 20300fbf3537Syasuoka 2031f0a4e295Syasuoka /** Is assigned realm a LOCAL authentication? */ 20320fbf3537Syasuoka int 20330fbf3537Syasuoka npppd_ppp_is_realm_local(npppd *_this, npppd_ppp *ppp) 20340fbf3537Syasuoka { 20350fbf3537Syasuoka NPPPD_ASSERT(_this != NULL); 20360fbf3537Syasuoka NPPPD_ASSERT(ppp != NULL); 20370fbf3537Syasuoka 20380fbf3537Syasuoka if (ppp->realm == NULL) 20390fbf3537Syasuoka return 0; 20400fbf3537Syasuoka 20410fbf3537Syasuoka return (npppd_auth_get_type(ppp->realm) == NPPPD_AUTH_TYPE_LOCAL) 20420fbf3537Syasuoka ? 1 : 0; 20430fbf3537Syasuoka } 20440fbf3537Syasuoka 2045f0a4e295Syasuoka /** Is assigned realm a RADIUS authentication? */ 20460fbf3537Syasuoka int 20470fbf3537Syasuoka npppd_ppp_is_realm_radius(npppd *_this, npppd_ppp *ppp) 20480fbf3537Syasuoka { 20490fbf3537Syasuoka NPPPD_ASSERT(_this != NULL); 20500fbf3537Syasuoka NPPPD_ASSERT(ppp != NULL); 20510fbf3537Syasuoka 20520fbf3537Syasuoka if (ppp->realm == NULL) 20530fbf3537Syasuoka return 0; 20540fbf3537Syasuoka 20550fbf3537Syasuoka return (npppd_auth_get_type(ppp->realm) == NPPPD_AUTH_TYPE_RADIUS) 20560fbf3537Syasuoka ? 1 : 0; 20570fbf3537Syasuoka } 20580fbf3537Syasuoka 2059f0a4e295Syasuoka /** Is assigned realm usable? */ 20600fbf3537Syasuoka int 20610fbf3537Syasuoka npppd_ppp_is_realm_ready(npppd *_this, npppd_ppp *ppp) 20620fbf3537Syasuoka { 20630fbf3537Syasuoka if (ppp->realm == NULL) 20640fbf3537Syasuoka return 0; 20650fbf3537Syasuoka 20660fbf3537Syasuoka return npppd_auth_is_ready(ppp->realm); 20670fbf3537Syasuoka } 20680fbf3537Syasuoka 2069f0a4e295Syasuoka /** Return the name of assigned realm */ 20700fbf3537Syasuoka const char * 20710fbf3537Syasuoka npppd_ppp_get_realm_name(npppd *_this, npppd_ppp *ppp) 20720fbf3537Syasuoka { 20730fbf3537Syasuoka if (ppp->realm == NULL) 20740fbf3537Syasuoka return "(none)"; 20750fbf3537Syasuoka return npppd_auth_get_name(ppp->realm); 20760fbf3537Syasuoka } 20770fbf3537Syasuoka 2078f0a4e295Syasuoka /** Return the interface name that bound given {@link ::npppd_ppp PPP} */ 20790fbf3537Syasuoka const char * 20800fbf3537Syasuoka npppd_ppp_get_iface_name(npppd *_this, npppd_ppp *ppp) 20810fbf3537Syasuoka { 20820fbf3537Syasuoka if (ppp == NULL || ppp->ifidx < 0) 20830fbf3537Syasuoka return "(not binding)"; 20840fbf3537Syasuoka return ppp_iface(ppp)->ifname; 20850fbf3537Syasuoka } 20860fbf3537Syasuoka 2087f0a4e295Syasuoka /** Is the interface usable? */ 20880fbf3537Syasuoka int 20890fbf3537Syasuoka npppd_ppp_iface_is_ready(npppd *_this, npppd_ppp *ppp) 20900fbf3537Syasuoka { 20910fbf3537Syasuoka return (npppd_iface_ip_is_ready(ppp_iface(ppp)) && 20920fbf3537Syasuoka ppp_ipcp(ppp) != NULL)? 1 : 0; 20930fbf3537Syasuoka } 20940fbf3537Syasuoka 2095f0a4e295Syasuoka /** Select a suitable interface for {@link :npppd_ppp PPP} and bind them */ 20960fbf3537Syasuoka int 20970fbf3537Syasuoka npppd_ppp_bind_iface(npppd *_this, npppd_ppp *ppp) 20980fbf3537Syasuoka { 2099821f7c56Syasuoka int i, ifidx; 2100821f7c56Syasuoka struct confbind *bind; 21010fbf3537Syasuoka 21020fbf3537Syasuoka NPPPD_ASSERT(_this != NULL); 21030fbf3537Syasuoka NPPPD_ASSERT(ppp != NULL); 21040fbf3537Syasuoka 21050fbf3537Syasuoka if (ppp->ifidx >= 0) 21060fbf3537Syasuoka return 0; 21070fbf3537Syasuoka 2108821f7c56Syasuoka TAILQ_FOREACH(bind, &_this->conf.confbinds, entry) { 2109821f7c56Syasuoka if (strcmp(bind->tunnconf->name, ppp->phy_label) != 0) 2110821f7c56Syasuoka continue; 2111821f7c56Syasuoka if (ppp->realm == NULL) { 2112821f7c56Syasuoka if (bind->authconf == NULL) 2113821f7c56Syasuoka break; 2114821f7c56Syasuoka } else if (strcmp(bind->authconf->name, 2115821f7c56Syasuoka npppd_auth_get_name(ppp->realm)) == 0) 2116821f7c56Syasuoka break; 2117821f7c56Syasuoka } 2118821f7c56Syasuoka if (bind == NULL) 21190fbf3537Syasuoka return 1; 21200fbf3537Syasuoka 2121f0a4e295Syasuoka /* Search a interface */ 21220fbf3537Syasuoka ifidx = -1; 21230fbf3537Syasuoka for (i = 0; i < countof(_this->iface); i++) { 21240fbf3537Syasuoka if (_this->iface[i].initialized == 0) 21250fbf3537Syasuoka continue; 2126821f7c56Syasuoka if (strcmp(_this->iface[i].ifname, bind->iface->name) == 0) 21270fbf3537Syasuoka ifidx = i; 21280fbf3537Syasuoka } 21290fbf3537Syasuoka if (ifidx < 0) 21300fbf3537Syasuoka return 1; 21310fbf3537Syasuoka 2132e43db91eSyasuoka if (_this->conf.max_session > 0 && 21334080edd5Syasuoka _this->nsession >= _this->conf.max_session) { 21340fbf3537Syasuoka ppp_log(ppp, LOG_WARNING, 21350fbf3537Syasuoka "Number of sessions reaches out of the limit=%d", 2136e43db91eSyasuoka _this->conf.max_session); 21370fbf3537Syasuoka return 1; 21380fbf3537Syasuoka } 21390fbf3537Syasuoka ppp->ifidx = ifidx; 21404080edd5Syasuoka _this->nsession++; 21410fbf3537Syasuoka 21420fbf3537Syasuoka return 0; 21430fbf3537Syasuoka } 21440fbf3537Syasuoka 2145f0a4e295Syasuoka /** Unbind the interface from the {@link ::npppd_ppp PPP} */ 21460fbf3537Syasuoka void 21470fbf3537Syasuoka npppd_ppp_unbind_iface(npppd *_this, npppd_ppp *ppp) 21480fbf3537Syasuoka { 21494080edd5Syasuoka if (ppp->ifidx >= 0) 2150821f7c56Syasuoka _this->nsession--; 21510fbf3537Syasuoka ppp->ifidx = -1; 21520fbf3537Syasuoka } 21530fbf3537Syasuoka 21540fbf3537Syasuoka static int 21550fbf3537Syasuoka npppd_rd_walktree_delete(struct radish_head *rh) 21560fbf3537Syasuoka { 21570fbf3537Syasuoka void *dummy; 21580fbf3537Syasuoka struct radish *rd; 21590fbf3537Syasuoka slist list; 21600fbf3537Syasuoka 21610fbf3537Syasuoka slist_init(&list); 21620fbf3537Syasuoka if (rd2slist(rh, &list) != 0) 21630fbf3537Syasuoka return 1; 21640fbf3537Syasuoka for (slist_itr_first(&list); slist_itr_has_next(&list);) { 21650fbf3537Syasuoka rd = slist_itr_next(&list); 21660fbf3537Syasuoka rd_delete(rd->rd_route, rd->rd_mask, rh, &dummy); 21670fbf3537Syasuoka } 21680fbf3537Syasuoka slist_fini(&list); 21690fbf3537Syasuoka 21700fbf3537Syasuoka free(rh); 21710fbf3537Syasuoka 21720fbf3537Syasuoka return 0; 21730fbf3537Syasuoka } 21740fbf3537Syasuoka 21750fbf3537Syasuoka #ifdef USE_NPPPD_RADIUS 2176f0a4e295Syasuoka /** 2177f0a4e295Syasuoka * Return radius_req_setting for the given {@link ::npppd_ppp PPP}. 2178f0a4e295Syasuoka * @return return NULL if no usable RADIUS setting. 2179f0a4e295Syasuoka */ 21800fbf3537Syasuoka void * 21818daf7599Syasuoka npppd_get_radius_auth_setting(npppd *_this, npppd_ppp *ppp) 21820fbf3537Syasuoka { 21830fbf3537Syasuoka NPPPD_ASSERT(_this != NULL); 21840fbf3537Syasuoka NPPPD_ASSERT(ppp != NULL); 21850fbf3537Syasuoka 21860fbf3537Syasuoka if (ppp->realm == NULL) 21870fbf3537Syasuoka return NULL; 21880fbf3537Syasuoka if (!npppd_ppp_is_realm_radius(_this, ppp)) 21890fbf3537Syasuoka return NULL; 21900fbf3537Syasuoka 21918daf7599Syasuoka return npppd_auth_radius_get_radius_auth_setting(ppp->realm); 21920fbf3537Syasuoka } 21930fbf3537Syasuoka #endif 21940fbf3537Syasuoka 2195f0a4e295Syasuoka /** Finalize authentication realm */ 21960fbf3537Syasuoka static void 21970fbf3537Syasuoka npppd_auth_finalizer_periodic(npppd *_this) 21980fbf3537Syasuoka { 21990fbf3537Syasuoka int ndisposing = 0, refcnt; 22000fbf3537Syasuoka slist users; 22010fbf3537Syasuoka npppd_auth_base *auth_base; 22020fbf3537Syasuoka npppd_ppp *ppp; 22030fbf3537Syasuoka 22040fbf3537Syasuoka /* 2205f0a4e295Syasuoka * For the realms with disposing flag, if the realm has assigned PPPs, 2206f0a4e295Syasuoka * disconnect them. If all PPPs are disconnected then free the realm. 22070fbf3537Syasuoka */ 22080fbf3537Syasuoka NPPPD_DBG((DEBUG_LEVEL_2, "%s() called", __func__)); 22090fbf3537Syasuoka slist_itr_first(&_this->realms); 22100fbf3537Syasuoka while (slist_itr_has_next(&_this->realms)) { 22110fbf3537Syasuoka auth_base = slist_itr_next(&_this->realms); 22120fbf3537Syasuoka if (!npppd_auth_is_disposing(auth_base)) 22130fbf3537Syasuoka continue; 22140fbf3537Syasuoka refcnt = 0; 22150fbf3537Syasuoka if (ndisposing++ == 0) { 22160fbf3537Syasuoka slist_init(&users); 22170fbf3537Syasuoka if (npppd_get_all_users(_this, &users) != 0) { 22180fbf3537Syasuoka log_printf(LOG_WARNING, 22190fbf3537Syasuoka "npppd_get_all_users() failed in %s(): %m", 22200fbf3537Syasuoka __func__); 22210fbf3537Syasuoka break; 22220fbf3537Syasuoka } 22230fbf3537Syasuoka } 22240fbf3537Syasuoka slist_itr_first(&users); 22250fbf3537Syasuoka while (slist_itr_has_next(&users)) { 22260fbf3537Syasuoka ppp = slist_itr_next(&users); 22270fbf3537Syasuoka if (ppp->realm == auth_base) { 22280fbf3537Syasuoka refcnt++; 22290fbf3537Syasuoka ppp_stop(ppp, NULL); 22300fbf3537Syasuoka ppp_log(ppp, LOG_INFO, 22310fbf3537Syasuoka "Stop request by npppd. Binding " 22320fbf3537Syasuoka "authentication realm is disposing. " 22330fbf3537Syasuoka "realm=%s", npppd_auth_get_name(auth_base)); 22340fbf3537Syasuoka slist_itr_remove(&users); 22350fbf3537Syasuoka } 22360fbf3537Syasuoka } 22378daf7599Syasuoka if (refcnt == 0) { 22380fbf3537Syasuoka npppd_auth_destroy(auth_base); 22398daf7599Syasuoka slist_itr_remove(&_this->realms); 22408daf7599Syasuoka } 22410fbf3537Syasuoka } 22420fbf3537Syasuoka if (ndisposing > 0) 22430fbf3537Syasuoka slist_fini(&users); 22440fbf3537Syasuoka } 22450fbf3537Syasuoka 2246f0a4e295Syasuoka /** compare sockaddr_npppd. return 0 if matches */ 22470fbf3537Syasuoka int 22480fbf3537Syasuoka sockaddr_npppd_match(void *a0, void *b0) 22490fbf3537Syasuoka { 22500fbf3537Syasuoka struct sockaddr_npppd *a, *b; 22510fbf3537Syasuoka 22520fbf3537Syasuoka a = a0; 22530fbf3537Syasuoka b = b0; 22540fbf3537Syasuoka 22550fbf3537Syasuoka return (a->snp_addr.s_addr == b->snp_addr.s_addr)? 1 : 0; 22560fbf3537Syasuoka } 22570fbf3537Syasuoka 22580fbf3537Syasuoka /** 2259f0a4e295Syasuoka * This function stores the username for authentication to the space specified 2260f0a4e295Syasuoka * by username_buffer and returns it. username_buffer must have space more 2261f0a4e295Syasuoka * than MAX_USERNAME_LENGTH. 22620fbf3537Syasuoka */ 22630fbf3537Syasuoka const char * 22640fbf3537Syasuoka npppd_ppp_get_username_for_auth(npppd *_this, npppd_ppp *ppp, 22650fbf3537Syasuoka const char *username, char *username_buffer) 22660fbf3537Syasuoka { 22670fbf3537Syasuoka NPPPD_ASSERT(_this != NULL); 22680fbf3537Syasuoka NPPPD_ASSERT(ppp != NULL); 22690fbf3537Syasuoka NPPPD_ASSERT(ppp->realm != NULL); 22700fbf3537Syasuoka 22710fbf3537Syasuoka return npppd_auth_username_for_auth(ppp->realm, username, 22720fbf3537Syasuoka username_buffer); 22730fbf3537Syasuoka } 22740fbf3537Syasuoka 2275363e4d4bSyasuoka const char * 2276821f7c56Syasuoka npppd_tunnel_protocol_name(int tunn_protocol) 2277363e4d4bSyasuoka { 2278821f7c56Syasuoka switch (tunn_protocol) { 2279821f7c56Syasuoka case NPPPD_TUNNEL_NONE: 2280363e4d4bSyasuoka return "None"; 2281821f7c56Syasuoka case NPPPD_TUNNEL_L2TP: 2282363e4d4bSyasuoka return "L2TP"; 2283821f7c56Syasuoka case NPPPD_TUNNEL_PPTP: 2284363e4d4bSyasuoka return "PPTP"; 2285821f7c56Syasuoka case NPPPD_TUNNEL_PPPOE: 2286363e4d4bSyasuoka return "PPPoE"; 2287821f7c56Syasuoka case NPPPD_TUNNEL_SSTP: 2288363e4d4bSyasuoka return "SSTP"; 2289363e4d4bSyasuoka } 2290363e4d4bSyasuoka 2291363e4d4bSyasuoka return "Error"; 2292363e4d4bSyasuoka } 2293821f7c56Syasuoka 2294821f7c56Syasuoka const char * 2295821f7c56Syasuoka npppd_ppp_tunnel_protocol_name(npppd *_this, npppd_ppp *ppp) 2296821f7c56Syasuoka { 2297821f7c56Syasuoka return npppd_tunnel_protocol_name(ppp->tunnel_type); 2298821f7c56Syasuoka } 2299821f7c56Syasuoka 2300821f7c56Syasuoka struct tunnconf * 2301821f7c56Syasuoka npppd_get_tunnconf(npppd *_this, const char *name) 2302821f7c56Syasuoka { 2303821f7c56Syasuoka struct tunnconf *conf; 2304821f7c56Syasuoka 2305821f7c56Syasuoka TAILQ_FOREACH(conf, &_this->conf.tunnconfs, entry) { 2306821f7c56Syasuoka if (strcmp(conf->name, name) == 0) 2307821f7c56Syasuoka return conf; 2308821f7c56Syasuoka } 2309821f7c56Syasuoka 2310821f7c56Syasuoka return NULL; 2311821f7c56Syasuoka } 2312821f7c56Syasuoka 231334682664Syasuoka void 231434682664Syasuoka npppd_on_ppp_start(npppd *_this, npppd_ppp *ppp) 231534682664Syasuoka { 231634682664Syasuoka struct ctl_conn *c; 231734682664Syasuoka 231834682664Syasuoka TAILQ_FOREACH(c, &ctl_conns, entry) { 231934682664Syasuoka if (npppd_ctl_add_started_ppp_id(c->ctx, ppp->id) == 0) { 232034682664Syasuoka npppd_ctl_imsg_compose(c->ctx, &c->iev.ibuf); 232134682664Syasuoka imsg_event_add(&c->iev); 232234682664Syasuoka } 232334682664Syasuoka } 232434682664Syasuoka } 232534682664Syasuoka 232634682664Syasuoka void 232734682664Syasuoka npppd_on_ppp_stop(npppd *_this, npppd_ppp *ppp) 232834682664Syasuoka { 232934682664Syasuoka struct ctl_conn *c; 233034682664Syasuoka 233134682664Syasuoka TAILQ_FOREACH(c, &ctl_conns, entry) { 233234682664Syasuoka if (npppd_ctl_add_stopped_ppp(c->ctx, ppp) == 0) { 233334682664Syasuoka npppd_ctl_imsg_compose(c->ctx, &c->iev.ibuf); 233434682664Syasuoka imsg_event_add(&c->iev); 233534682664Syasuoka } 233634682664Syasuoka } 233734682664Syasuoka } 233834682664Syasuoka 233934682664Syasuoka void 234034682664Syasuoka imsg_event_add(struct imsgev *iev) 234134682664Syasuoka { 234234682664Syasuoka iev->events = EV_READ; 234334682664Syasuoka if (iev->ibuf.w.queued) 234434682664Syasuoka iev->events |= EV_WRITE; 234534682664Syasuoka 234634682664Syasuoka event_del(&iev->ev); 234734682664Syasuoka event_set(&iev->ev, iev->ibuf.fd, iev->events, iev->handler, iev->data); 234834682664Syasuoka event_add(&iev->ev, NULL); 234934682664Syasuoka } 2350