1 /*- 2 * Copyright (c) 1998 Brian Somers <brian@Awfulhak.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 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 0x0001 37 #define OPT_IDCHECK 0x0002 38 #define OPT_IFACEALIAS 0x0004 39 #define OPT_KEEPSESSION 0x0008 40 #define OPT_LOOPBACK 0x0010 41 #define OPT_PASSWDAUTH 0x0020 42 #define OPT_PROXY 0x0040 43 #define OPT_PROXYALL 0x0080 44 #define OPT_SROUTES 0x0100 45 #define OPT_TCPMSSFIXUP 0x0200 46 #define OPT_THROUGHPUT 0x0400 47 #define OPT_UTMP 0x0800 48 49 #define MAX_ENDDISC_CLASS 5 50 51 #define Enabled(b, o) ((b)->cfg.opt & (o)) 52 53 /* AutoAdjust() values */ 54 #define AUTO_UP 1 55 #define AUTO_DOWN 2 56 57 struct sockaddr_un; 58 struct datalink; 59 struct physical; 60 struct link; 61 struct server; 62 struct prompt; 63 struct iface; 64 65 struct bundle { 66 struct fdescriptor desc; /* really all our datalinks */ 67 int unit; /* The device/interface unit number */ 68 69 struct { 70 char Name[20]; /* The /dev/XXXX name */ 71 int fd; /* The /dev/XXXX descriptor */ 72 unsigned header : 1; /* Family header sent & received ? */ 73 } dev; 74 75 u_long bandwidth; /* struct tuninfo speed */ 76 int mtu; /* struct tuninfo MTU */ 77 struct iface *iface; /* Interface information */ 78 79 int routing_seq; /* The current routing sequence number */ 80 u_int phase; /* Curent phase */ 81 82 struct { 83 int all; /* Union of all physical::type's */ 84 int open; /* Union of all open physical::type's */ 85 } phys_type; 86 87 unsigned CleaningUp : 1; /* Going to exit.... */ 88 unsigned NatEnabled : 1; /* Are we using libalias ? */ 89 90 struct fsm_parent fsm; /* Our callback functions */ 91 struct datalink *links; /* Our data links */ 92 93 time_t upat; /* When the link came up */ 94 95 struct { 96 struct { 97 int timeout; /* NCP Idle timeout value */ 98 int min_timeout; /* Don't idle out before this */ 99 } idle; 100 struct { 101 char name[AUTHLEN]; /* PAP/CHAP system name */ 102 char key[AUTHLEN]; /* PAP/CHAP key */ 103 } auth; 104 unsigned opt; /* Uses OPT_ bits from above */ 105 char label[50]; /* last thing `load'ed */ 106 u_short mtu; /* Required interface MTU */ 107 u_short ifqueue; /* Interface queue size */ 108 109 struct { 110 int timeout; /* How long to leave the output queue choked */ 111 } choked; 112 } cfg; 113 114 struct { 115 struct ipcp ipcp; /* Our IPCP FSM */ 116 struct mp mp; /* Our MP */ 117 } ncp; 118 119 struct { 120 struct filter in; /* incoming packet filter */ 121 struct filter out; /* outgoing packet filter */ 122 struct filter dial; /* dial-out packet filter */ 123 struct filter alive; /* keep-alive packet filter */ 124 } filter; 125 126 struct { 127 struct pppTimer timer; /* timeout after cfg.idle_timeout */ 128 time_t done; 129 } idle; 130 131 struct { 132 int fd; /* write status here */ 133 } notify; 134 135 struct { 136 struct pppTimer timer; /* choked output queue timer */ 137 } choked; 138 139 #ifndef NORADIUS 140 struct radius radius; /* Info retrieved from radius server */ 141 struct radacct radacct; 142 #endif 143 }; 144 145 #define descriptor2bundle(d) \ 146 ((d)->type == BUNDLE_DESCRIPTOR ? (struct bundle *)(d) : NULL) 147 148 extern struct bundle *bundle_Create(const char *, int, int); 149 extern void bundle_Destroy(struct bundle *); 150 extern const char *bundle_PhaseName(struct bundle *); 151 #define bundle_Phase(b) ((b)->phase) 152 extern void bundle_NewPhase(struct bundle *, u_int); 153 extern void bundle_LinksRemoved(struct bundle *); 154 extern int bundle_LinkIsUp(const struct bundle *); 155 extern void bundle_Close(struct bundle *, const char *, int); 156 extern void bundle_Down(struct bundle *, int); 157 extern void bundle_Open(struct bundle *, const char *, int, int); 158 extern void bundle_LinkClosed(struct bundle *, struct datalink *); 159 160 extern int bundle_ShowLinks(struct cmdargs const *); 161 extern int bundle_ShowStatus(struct cmdargs const *); 162 extern void bundle_StartIdleTimer(struct bundle *, unsigned secs); 163 extern void bundle_SetIdleTimer(struct bundle *, int, int); 164 extern void bundle_StopIdleTimer(struct bundle *); 165 extern int bundle_IsDead(struct bundle *); 166 extern struct datalink *bundle2datalink(struct bundle *, const char *); 167 168 extern void bundle_RegisterDescriptor(struct bundle *, struct fdescriptor *); 169 extern void bundle_UnRegisterDescriptor(struct bundle *, struct fdescriptor *); 170 171 extern void bundle_SetTtyCommandMode(struct bundle *, struct datalink *); 172 173 extern int bundle_DatalinkClone(struct bundle *, struct datalink *, 174 const char *); 175 extern void bundle_DatalinkRemove(struct bundle *, struct datalink *); 176 extern void bundle_CleanDatalinks(struct bundle *); 177 extern void bundle_SetLabel(struct bundle *, const char *); 178 extern const char *bundle_GetLabel(struct bundle *); 179 extern void bundle_SendDatalink(struct datalink *, int, struct sockaddr_un *); 180 extern int bundle_LinkSize(void); 181 extern void bundle_ReceiveDatalink(struct bundle *, int); 182 extern int bundle_SetMode(struct bundle *, struct datalink *, int); 183 extern int bundle_RenameDatalink(struct bundle *, struct datalink *, 184 const char *); 185 extern void bundle_setsid(struct bundle *, int); 186 extern void bundle_LockTun(struct bundle *); 187 extern int bundle_HighestState(struct bundle *); 188 extern int bundle_Exception(struct bundle *, int); 189 extern void bundle_AdjustFilters(struct bundle *, struct in_addr *, 190 struct in_addr *); 191 extern void bundle_AdjustDNS(struct bundle *, struct in_addr [2]); 192 extern void bundle_CalculateBandwidth(struct bundle *); 193 extern void bundle_AutoAdjust(struct bundle *, int, int); 194 extern int bundle_WantAutoloadTimer(struct bundle *); 195 extern void bundle_ChangedPID(struct bundle *); 196 extern void bundle_Notify(struct bundle *, char); 197