usr.sbin/ppp/lcp.h

   1 /*-
   2  * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org>
   3  *          based on work by Toshiharu OHNO <tony-o@iij.ad.jp>
   4  *                           Internet Initiative Japan, Inc (IIJ)
   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  * $FreeBSD: src/usr.sbin/ppp/lcp.h,v 1.23.2.6 2002/09/01 02:12:28 brian Exp $
  29  * $DragonFly: src/usr.sbin/ppp/lcp.h,v 1.2 2003/06/17 04:30:00 dillon Exp $
  30  */
  31
  32 /* callback::opmask values */
  33 #define CALLBACK_AUTH           (0)
  34 #define CALLBACK_DIALSTRING     (1)     /* Don't do this */
  35 #define CALLBACK_LOCATION       (2)     /* Don't do this */
  36 #define CALLBACK_E164           (3)
  37 #define CALLBACK_NAME           (4)     /* Don't do this */
  38 #define CALLBACK_CBCP           (6)
  39 #define CALLBACK_NONE           (14)    /* No callback is ok */
  40
  41 #define CALLBACK_BIT(n) ((n) < 0 ? 0 : 1 << (n))
  42
  43 struct callback {
  44   int opmask;                   /* want these types of callback */
  45   char msg[SCRIPT_LEN];         /* with this data (E.164) */
  46 };
  47
  48 #define REJECTED(p, x)  ((p)->his_reject & (1<<(x)))
  49
  50 struct lcp {
  51   struct fsm fsm;               /* The finite state machine */
  52   u_int16_t his_mru;            /* Peers maximum packet size */
  53   u_int16_t his_mrru;           /* Peers maximum reassembled packet size (MP) */
  54   u_int32_t his_accmap;         /* Peeers async char control map */
  55   u_int32_t his_magic;          /* Peers magic number */
  56   u_int32_t his_lqrperiod;      /* Peers LQR frequency (100ths of seconds) */
  57   u_short his_auth;             /* Peer wants this type of authentication */
  58   u_char his_authtype;          /* Fifth octet of REQ/NAK/REJ */
  59   struct callback his_callback; /* Peer wants callback ? */
  60   unsigned his_shortseq : 1;    /* Peer would like only 12bit seqs (MP) */
  61   unsigned his_protocomp : 1;   /* Does peer do Protocol field compression */
  62   unsigned his_acfcomp : 1;     /* Does peer do addr & cntrl fld compression */
  63   unsigned mru_req : 1;         /* Has the peer requested an MRU */
  64
  65   u_short want_mru;             /* Our maximum packet size */
  66   u_short want_mrru;            /* Our maximum reassembled packet size (MP) */
  67   u_int32_t want_accmap;        /* Our async char control map */
  68   u_int32_t want_magic;         /* Our magic number */
  69   u_int32_t want_lqrperiod;     /* Our LQR frequency (100ths of seconds) */
  70   u_short want_auth;            /* We want this type of authentication */
  71   u_char want_authtype;         /* Fifth octet of REQ/NAK/REJ */
  72   struct callback want_callback;/* We want callback ? */
  73   unsigned want_shortseq : 1;   /* I'd like only 12bit seqs (MP) */
  74   unsigned want_protocomp : 1;  /* Do we do protocol field compression */
  75   unsigned want_acfcomp : 1;    /* Do we do addr & cntrl fld compression */
  76
  77   u_int32_t his_reject;         /* Request codes rejected by peer */
  78   u_int32_t my_reject;          /* Request codes I have rejected */
  79
  80   u_short auth_iwait;           /* I must authenticate to the peer */
  81   u_short auth_ineed;           /* I require that the peer authenticates */
  82
  83   int LcpFailedMagic;           /* Number of `magic is same' errors */
  84
  85   struct {
  86     u_short mru;                /* Preferred MRU value */
  87     u_short max_mru;            /* Preferred MRU value */
  88     u_short mtu;                /* Preferred MTU */
  89     u_short max_mtu;            /* Preferred MTU */
  90     u_int32_t accmap;           /* Initial ACCMAP value */
  91     int openmode;               /* when to start CFG REQs */
  92     u_int32_t lqrperiod;        /* LQR frequency (seconds) */
  93     struct fsm_retry fsm;       /* How often/frequently to resend requests */
  94     unsigned acfcomp : 2;       /* Address & Control Field Compression neg */
  95     unsigned chap05 : 2;        /* Challenge Handshake Authentication proto */
  96 #ifndef NODES
  97     unsigned chap80nt : 2;      /* Microsoft (NT) CHAP */
  98     unsigned chap80lm : 2;      /* Microsoft (LANMan) CHAP */
  99     unsigned chap81 : 2;        /* Microsoft CHAP v2 */
 100 #endif
 101     unsigned lqr : 2;           /* Link Quality Report */
 102     unsigned pap : 2;           /* Password Authentication protocol */
 103     unsigned protocomp : 2;     /* Protocol field compression */
 104     char ident[DEF_MRU - 7];    /* SendIdentification() data */
 105   } cfg;
 106 };
 107
 108 #define LCP_MAXCODE     CODE_IDENT
 109 #define LCP_MINMPCODE   CODE_CODEREJ
 110
 111 #define TY_MRU          1       /* Maximum-Receive-Unit */
 112 #define TY_ACCMAP       2       /* Async-Control-Character-Map */
 113 #define TY_AUTHPROTO    3       /* Authentication-Protocol */
 114 #define TY_QUALPROTO    4       /* Quality-Protocol */
 115 #define TY_MAGICNUM     5       /* Magic-Number */
 116 #define TY_RESERVED     6       /* RESERVED */
 117 #define TY_PROTOCOMP    7       /* Protocol-Field-Compression */
 118 #define TY_ACFCOMP      8       /* Address-and-Control-Field-Compression */
 119 #define TY_FCSALT       9       /* FCS-Alternatives */
 120 #define TY_SDP          10      /* Self-Describing-Padding */
 121 #define TY_CALLBACK     13      /* Callback */
 122 #define TY_CFRAMES      15      /* Compound-frames */
 123 #define TY_MRRU         17      /* Max Reconstructed Receive Unit (MP) */
 124 #define TY_SHORTSEQ     18      /* Want short seqs (12bit) please (see mp.h) */
 125 #define TY_ENDDISC      19      /* Endpoint discriminator */
 126
 127 struct mbuf;
 128 struct link;
 129 struct bundle;
 130 struct cmdargs;
 131
 132 #define fsm2lcp(fp) (fp->proto == PROTO_LCP ? (struct lcp *)fp : NULL)
 133
 134 extern void lcp_Init(struct lcp *, struct bundle *, struct link *,
 135                      const struct fsm_parent *);
 136 extern void lcp_Setup(struct lcp *, int);
 137
 138 extern void lcp_SendProtoRej(struct lcp *, u_char *, int);
 139 extern int lcp_SendIdentification(struct lcp *);
 140 extern void lcp_RecvIdentification(struct lcp *, char *);
 141 extern int lcp_ReportStatus(struct cmdargs const *);
 142 extern struct mbuf *lcp_Input(struct bundle *, struct link *, struct mbuf *);
 143 extern void lcp_SetupCallbacks(struct lcp *);