1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #define PHASE_DEAD 0 /* Link is dead */ 30 #define PHASE_ESTABLISH 1 /* Establishing link */ 31 #define PHASE_AUTHENTICATE 2 /* Being authenticated */ 32 #define PHASE_NETWORK 3 /* We're alive ! */ 33 #define PHASE_TERMINATE 4 /* Terminating link */ 34 35 /* cfg.opt bit settings */ 36 #define OPT_FILTERDECAP 1 37 #define OPT_FORCE_SCRIPTS 2 /* force chat scripts */ 38 #define OPT_IDCHECK 3 39 #define OPT_IFACEALIAS 4 40 #ifndef NOINET6 41 #define OPT_IPCP 5 42 #define OPT_IPV6CP 6 43 #endif 44 #define OPT_KEEPSESSION 7 45 #define OPT_LOOPBACK 8 46 #define OPT_NAS_IP_ADDRESS 9 47 #define OPT_NAS_IDENTIFIER 10 48 #define OPT_PASSWDAUTH 11 49 #define OPT_PROXY 12 50 #define OPT_PROXYALL 13 51 #define OPT_SROUTES 14 52 #define OPT_TCPMSSFIXUP 15 53 #define OPT_THROUGHPUT 16 54 #define OPT_UTMP 17 55 #define OPT_MAX 17 56 57 #define MAX_ENDDISC_CLASS 5 58 59 #define Enabled(b, o) ((b)->cfg.optmask & (1ull << (o))) 60 #define opt_enable(b, o) ((b)->cfg.optmask |= (1ull << (o))) 61 #define opt_disable(b, o) ((b)->cfg.optmask &= ~(1ull << (o))) 62 63 /* AutoAdjust() values */ 64 #define AUTO_UP 1 65 #define AUTO_DOWN 2 66 67 struct sockaddr_un; 68 struct datalink; 69 struct physical; 70 struct link; 71 struct server; 72 struct prompt; 73 struct iface; 74 75 struct bundle { 76 struct fdescriptor desc; /* really all our datalinks */ 77 int unit; /* The device/interface unit number */ 78 79 struct { 80 char Name[20]; /* The /dev/XXXX name */ 81 int fd; /* The /dev/XXXX descriptor */ 82 unsigned header : 1; /* Family header sent & received ? */ 83 } dev; 84 85 u_long bandwidth; /* struct tuninfo speed */ 86 struct iface *iface; /* Interface information */ 87 88 int routing_seq; /* The current routing sequence number */ 89 u_int phase; /* Curent phase */ 90 91 struct { 92 int all; /* Union of all physical::type's */ 93 int open; /* Union of all open physical::type's */ 94 } phys_type; 95 96 unsigned CleaningUp : 1; /* Going to exit.... */ 97 unsigned NatEnabled : 1; /* Are we using libalias ? */ 98 99 struct fsm_parent fsm; /* Our callback functions */ 100 struct datalink *links; /* Our data links */ 101 102 time_t upat; /* When the link came up */ 103 104 struct { 105 struct { 106 unsigned timeout; /* NCP Idle timeout value */ 107 unsigned min_timeout; /* Don't idle out before this */ 108 } idle; 109 struct { 110 char name[AUTHLEN]; /* PAP/CHAP system name */ 111 char key[AUTHLEN]; /* PAP/CHAP key */ 112 } auth; 113 unsigned long long optmask; /* Uses OPT_ bits from above */ 114 char label[50]; /* last thing `load'ed */ 115 u_short ifqueue; /* Interface queue size */ 116 117 struct { 118 unsigned timeout; /* How long to leave the output queue choked */ 119 } choked; 120 } cfg; 121 122 struct ncp ncp; 123 124 struct { 125 struct filter in; /* incoming packet filter */ 126 struct filter out; /* outgoing packet filter */ 127 struct filter dial; /* dial-out packet filter */ 128 struct filter alive; /* keep-alive packet filter */ 129 } filter; 130 131 struct { 132 struct pppTimer timer; /* timeout after cfg.idle_timeout */ 133 time_t done; 134 } idle; 135 136 #ifndef NORADIUS 137 struct { 138 struct pppTimer timer; 139 time_t done; 140 } session; 141 #endif 142 143 struct { 144 int fd; /* write status here */ 145 } notify; 146 147 struct { 148 struct pppTimer timer; /* choked output queue timer */ 149 } choked; 150 151 #ifndef NORADIUS 152 struct radius radius; /* Info retrieved from radius server */ 153 struct radacct radacct; 154 #ifndef NOINET6 155 struct radacct radacct6; 156 #endif 157 #endif 158 }; 159 160 #define descriptor2bundle(d) \ 161 ((d)->type == BUNDLE_DESCRIPTOR ? (struct bundle *)(d) : NULL) 162 163 extern struct bundle *bundle_Create(const char *, int, int); 164 extern void bundle_Destroy(struct bundle *); 165 extern const char *bundle_PhaseName(struct bundle *); 166 #define bundle_Phase(b) ((b)->phase) 167 extern void bundle_NewPhase(struct bundle *, u_int); 168 extern void bundle_LinksRemoved(struct bundle *); 169 extern void bundle_Close(struct bundle *, const char *, int); 170 extern void bundle_Down(struct bundle *, int); 171 extern void bundle_Open(struct bundle *, const char *, int, int); 172 extern void bundle_LinkClosed(struct bundle *, struct datalink *); 173 174 extern int bundle_ShowLinks(struct cmdargs const *); 175 extern int bundle_ShowStatus(struct cmdargs const *); 176 extern void bundle_StartIdleTimer(struct bundle *, unsigned secs); 177 extern void bundle_SetIdleTimer(struct bundle *, unsigned, unsigned); 178 extern void bundle_StopIdleTimer(struct bundle *); 179 extern int bundle_IsDead(struct bundle *); 180 extern struct datalink *bundle2datalink(struct bundle *, const char *); 181 182 #ifndef NORADIUS 183 extern void bundle_StartSessionTimer(struct bundle *, unsigned secs); 184 extern void bundle_StopSessionTimer(struct bundle *); 185 #endif 186 187 extern void bundle_RegisterDescriptor(struct bundle *, struct fdescriptor *); 188 extern void bundle_UnRegisterDescriptor(struct bundle *, struct fdescriptor *); 189 190 extern void bundle_SetTtyCommandMode(struct bundle *, struct datalink *); 191 192 extern int bundle_DatalinkClone(struct bundle *, struct datalink *, 193 const char *); 194 extern void bundle_DatalinkRemove(struct bundle *, struct datalink *); 195 extern void bundle_CleanDatalinks(struct bundle *); 196 extern void bundle_SetLabel(struct bundle *, const char *); 197 extern const char *bundle_GetLabel(struct bundle *); 198 extern void bundle_SendDatalink(struct datalink *, int, struct sockaddr_un *); 199 extern int bundle_LinkSize(void); 200 extern void bundle_ReceiveDatalink(struct bundle *, int); 201 extern int bundle_SetMode(struct bundle *, struct datalink *, int); 202 extern int bundle_RenameDatalink(struct bundle *, struct datalink *, 203 const char *); 204 extern void bundle_setsid(struct bundle *, int); 205 extern void bundle_LockTun(struct bundle *); 206 extern unsigned bundle_HighestState(struct bundle *); 207 extern int bundle_Exception(struct bundle *, int); 208 extern void bundle_AdjustFilters(struct bundle *, struct ncpaddr *, 209 struct ncpaddr *); 210 extern void bundle_AdjustDNS(struct bundle *); 211 extern void bundle_CalculateBandwidth(struct bundle *); 212 extern void bundle_AutoAdjust(struct bundle *, int, int); 213 extern int bundle_WantAutoloadTimer(struct bundle *); 214 extern void bundle_ChangedPID(struct bundle *); 215 extern void bundle_Notify(struct bundle *, char); 216 extern int bundle_Uptime(struct bundle *); 217