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_THROUGHPUT 0x0200 46 #define OPT_UTMP 0x0400 47 48 #define MAX_ENDDISC_CLASS 5 49 50 #define Enabled(b, o) ((b)->cfg.opt & (o)) 51 52 /* AutoAdjust() values */ 53 #define AUTO_UP 1 54 #define AUTO_DOWN 2 55 56 struct sockaddr_un; 57 struct datalink; 58 struct physical; 59 struct link; 60 struct server; 61 struct prompt; 62 struct iface; 63 64 struct bundle { 65 struct fdescriptor desc; /* really all our datalinks */ 66 int unit; /* The device/interface unit number */ 67 68 struct { 69 char Name[20]; /* The /dev/XXXX name */ 70 int fd; /* The /dev/XXXX descriptor */ 71 unsigned header : 1; /* Family header sent & received ? */ 72 } dev; 73 74 u_long bandwidth; /* struct tuninfo speed */ 75 struct iface *iface; /* Interface information */ 76 77 int routing_seq; /* The current routing sequence number */ 78 u_int phase; /* Curent phase */ 79 80 struct { 81 int all; /* Union of all physical::type's */ 82 int open; /* Union of all open physical::type's */ 83 } phys_type; 84 85 unsigned CleaningUp : 1; /* Going to exit.... */ 86 unsigned NatEnabled : 1; /* Are we using libalias ? */ 87 88 struct fsm_parent fsm; /* Our callback functions */ 89 struct datalink *links; /* Our data links */ 90 91 time_t upat; /* When the link came up */ 92 93 struct { 94 struct { 95 int timeout; /* NCP Idle timeout value */ 96 int min_timeout; /* Don't idle out before this */ 97 } idle; 98 struct { 99 char name[AUTHLEN]; /* PAP/CHAP system name */ 100 char key[AUTHLEN]; /* PAP/CHAP key */ 101 } auth; 102 unsigned opt; /* Uses OPT_ bits from above */ 103 char label[50]; /* last thing `load'ed */ 104 u_short mtu; /* Interface mtu */ 105 u_short ifqueue; /* Interface queue size */ 106 107 struct { 108 int timeout; /* How long to leave the output queue choked */ 109 } choked; 110 } cfg; 111 112 struct { 113 struct ipcp ipcp; /* Our IPCP FSM */ 114 struct mp mp; /* Our MP */ 115 } ncp; 116 117 struct { 118 struct filter in; /* incoming packet filter */ 119 struct filter out; /* outgoing packet filter */ 120 struct filter dial; /* dial-out packet filter */ 121 struct filter alive; /* keep-alive packet filter */ 122 } filter; 123 124 struct { 125 struct pppTimer timer; /* timeout after cfg.idle_timeout */ 126 time_t done; 127 } idle; 128 129 struct { 130 int fd; /* write status here */ 131 } notify; 132 133 struct { 134 struct pppTimer timer; /* choked output queue timer */ 135 } choked; 136 137 #ifndef NORADIUS 138 struct radius radius; /* Info retrieved from radius server */ 139 #endif 140 }; 141 142 #define descriptor2bundle(d) \ 143 ((d)->type == BUNDLE_DESCRIPTOR ? (struct bundle *)(d) : NULL) 144 145 extern struct bundle *bundle_Create(const char *, int, int); 146 extern void bundle_Destroy(struct bundle *); 147 extern const char *bundle_PhaseName(struct bundle *); 148 #define bundle_Phase(b) ((b)->phase) 149 extern void bundle_NewPhase(struct bundle *, u_int); 150 extern void bundle_LinksRemoved(struct bundle *); 151 extern int bundle_LinkIsUp(const struct bundle *); 152 extern int bundle_SetRoute(struct bundle *, int, struct in_addr, 153 struct in_addr, struct in_addr, int, int); 154 extern void bundle_Close(struct bundle *, const char *, int); 155 extern void bundle_Down(struct bundle *, int); 156 extern void bundle_Open(struct bundle *, const char *, int, int); 157 extern void bundle_LinkClosed(struct bundle *, struct datalink *); 158 159 extern int bundle_ShowLinks(struct cmdargs const *); 160 extern int bundle_ShowStatus(struct cmdargs const *); 161 extern void bundle_StartIdleTimer(struct bundle *, unsigned secs); 162 extern void bundle_SetIdleTimer(struct bundle *, int, int); 163 extern void bundle_StopIdleTimer(struct bundle *); 164 extern int bundle_IsDead(struct bundle *); 165 extern struct datalink *bundle2datalink(struct bundle *, const char *); 166 167 extern void bundle_RegisterDescriptor(struct bundle *, struct fdescriptor *); 168 extern void bundle_UnRegisterDescriptor(struct bundle *, struct fdescriptor *); 169 170 extern void bundle_SetTtyCommandMode(struct bundle *, struct datalink *); 171 172 extern int bundle_DatalinkClone(struct bundle *, struct datalink *, 173 const char *); 174 extern void bundle_DatalinkRemove(struct bundle *, struct datalink *); 175 extern void bundle_CleanDatalinks(struct bundle *); 176 extern void bundle_SetLabel(struct bundle *, const char *); 177 extern const char *bundle_GetLabel(struct bundle *); 178 extern void bundle_SendDatalink(struct datalink *, int, struct sockaddr_un *); 179 extern int bundle_LinkSize(void); 180 extern void bundle_ReceiveDatalink(struct bundle *, int); 181 extern int bundle_SetMode(struct bundle *, struct datalink *, int); 182 extern int bundle_RenameDatalink(struct bundle *, struct datalink *, 183 const char *); 184 extern void bundle_setsid(struct bundle *, int); 185 extern void bundle_LockTun(struct bundle *); 186 extern int bundle_HighestState(struct bundle *); 187 extern int bundle_Exception(struct bundle *, int); 188 extern void bundle_AdjustFilters(struct bundle *, struct in_addr *, 189 struct in_addr *); 190 extern void bundle_AdjustDNS(struct bundle *, struct in_addr [2]); 191 extern void bundle_CalculateBandwidth(struct bundle *); 192 extern void bundle_AutoAdjust(struct bundle *, int, int); 193 extern int bundle_WantAutoloadTimer(struct bundle *); 194 extern void bundle_ChangedPID(struct bundle *); 195 extern void bundle_Notify(struct bundle *, char); 196