c191dd1965
is called prior to sending a CCP configure request for a given protocol. The default is to send the request, but this is overridden for MPPE which checks to see if the lcp negotiations agreed CHAP81, and if not fails. Use the same function to decide if we should reject peer requests for MPPE. This should get rid of those boring messages about not being able to initialise MPPE when we don't negotiate CHAP81.
142 lines
4.4 KiB
C
142 lines
4.4 KiB
C
/*
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* Written by Toshiharu OHNO (tony-o@iij.ad.jp)
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*
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* Copyright (C) 1993, Internet Initiative Japan, Inc. All rights reserverd.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the Internet Initiative Japan. The name of the
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* IIJ may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $FreeBSD$
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*
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* TODO:
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*/
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#define CCP_MAXCODE CODE_RESETACK
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#define TY_OUI 0 /* OUI */
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#define TY_PRED1 1 /* Predictor type 1 */
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#define TY_PRED2 2 /* Predictor type 2 */
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#define TY_PUDDLE 3 /* Puddle Jumper */
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#define TY_HWPPC 16 /* Hewlett-Packard PPC */
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#define TY_STAC 17 /* Stac Electronics LZS */
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#define TY_MSPPC 18 /* Microsoft PPC */
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#define TY_MPPE 18 /* Microsoft PPE */
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#define TY_GAND 19 /* Gandalf FZA */
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#define TY_V42BIS 20 /* V.42bis compression */
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#define TY_BSD 21 /* BSD LZW Compress */
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#define TY_PPPD_DEFLATE 24 /* Deflate (gzip) - (mis) numbered by pppd */
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#define TY_DEFLATE 26 /* Deflate (gzip) - rfc 1979 */
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#define CCP_NEG_DEFLATE 0
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#define CCP_NEG_PRED1 1
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#define CCP_NEG_DEFLATE24 2
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#ifdef HAVE_DES
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#define CCP_NEG_MPPE 3
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#define CCP_NEG_TOTAL 4
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#else
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#define CCP_NEG_TOTAL 3
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#endif
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struct mbuf;
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struct link;
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struct ccp_config {
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struct {
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struct {
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int winsize;
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} in, out;
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} deflate;
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#ifdef HAVE_DES
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struct {
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int keybits;
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} mppe;
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#endif
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struct fsm_retry fsm; /* How often/frequently to resend requests */
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unsigned neg[CCP_NEG_TOTAL];
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};
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struct ccp_opt {
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struct ccp_opt *next;
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int algorithm;
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struct lcp_opt val;
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};
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struct ccp {
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struct fsm fsm; /* The finite state machine */
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int his_proto; /* peer's compression protocol */
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int my_proto; /* our compression protocol */
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int reset_sent; /* If != -1, ignore compressed 'till ack */
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int last_reset; /* We can receive more (dups) w/ this id */
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struct {
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int algorithm; /* Algorithm in use */
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void *state; /* Returned by implementations Init() */
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struct lcp_opt opt; /* Set by implementation's OptInit() */
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} in;
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struct {
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int algorithm; /* Algorithm in use */
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void *state; /* Returned by implementations Init() */
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struct ccp_opt *opt; /* Set by implementation's OptInit() */
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} out;
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u_int32_t his_reject; /* Request codes rejected by peer */
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u_int32_t my_reject; /* Request codes I have rejected */
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u_long uncompout, compout; /* Outgoing bytes before/after compression */
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u_long uncompin, compin; /* Incoming bytes after/before decompression */
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struct ccp_config cfg;
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};
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#define fsm2ccp(fp) (fp->proto == PROTO_CCP ? (struct ccp *)fp : NULL)
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struct ccp_algorithm {
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int id;
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int Neg; /* ccp_config neg array item */
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const char *(*Disp)(struct lcp_opt *); /* Use result immediately ! */
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int (*Usable)(struct fsm *); /* Ok to negotiate ? */
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struct {
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int (*Set)(struct lcp_opt *, const struct ccp_config *);
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void *(*Init)(struct lcp_opt *);
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void (*Term)(void *);
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void (*Reset)(void *);
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struct mbuf *(*Read)(void *, struct ccp *, u_short *, struct mbuf *);
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void (*DictSetup)(void *, struct ccp *, u_short, struct mbuf *);
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} i;
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struct {
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void (*OptInit)(struct lcp_opt *, const struct ccp_config *);
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int (*Set)(struct lcp_opt *);
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void *(*Init)(struct lcp_opt *);
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void (*Term)(void *);
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void (*Reset)(void *);
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struct mbuf *(*Write)(void *, struct ccp *, struct link *, int, u_short *,
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struct mbuf *);
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} o;
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};
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extern void ccp_Init(struct ccp *, struct bundle *, struct link *,
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const struct fsm_parent *);
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extern void ccp_Setup(struct ccp *);
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extern void ccp_SendResetReq(struct fsm *);
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extern struct mbuf *ccp_Input(struct bundle *, struct link *, struct mbuf *);
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extern int ccp_ReportStatus(struct cmdargs const *);
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extern u_short ccp_Proto(struct ccp *);
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extern void ccp_SetupCallbacks(struct ccp *);
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extern int ccp_SetOpenMode(struct ccp *);
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extern int ccp_IsUsable(struct fsm *);
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extern struct layer ccplayer;
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