diff options
| -rw-r--r-- | usr.sbin/ppp/mppe.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/usr.sbin/ppp/mppe.c b/usr.sbin/ppp/mppe.c index 891492b49e31..f079660c2fa4 100644 --- a/usr.sbin/ppp/mppe.c +++ b/usr.sbin/ppp/mppe.c @@ -70,12 +70,13 @@ #define MPPE_OPT_BITMASK 0xe0 #define MPPE_OPT_MASK (MPPE_OPT_STATELESS | MPPE_OPT_BITMASK) -#define MPPE_FLUSHED 0x8000 -#define MPPE_ENCRYPTED 0x1000 -#define MPPE_HEADER_BITMASK 0xf000 -#define MPPE_HEADER_FLAG 0x00ff -#define MPPE_HEADER_FLAGMASK 0x00ff -#define MPPE_HEADER_FLAGSHIFT 8 +#define MPPE_FLUSHED 0x8000 +#define MPPE_ENCRYPTED 0x1000 +#define MPPE_HEADER_BITMASK 0xf000 +#define MPPE_HEADER_FLAG 0x00ff +#define MPPE_HEADER_FLAGMASK 0x00ff +#define MPPE_HEADER_FLAGSHIFT 8 +#define MPPE_HEADER_STATEFUL_KEYCHANGES 16 struct mppe_state { unsigned stateless : 1; @@ -276,6 +277,8 @@ MPPEInput(void *v, struct ccp *ccp, u_short *proto, struct mbuf *mp) */ n = (prefix >> MPPE_HEADER_FLAGSHIFT) - (mip->cohnum >> MPPE_HEADER_FLAGSHIFT); + if (n < 0) + n += MPPE_HEADER_STATEFUL_KEYCHANGES; while (n--) { log_Printf(LogDEBUG, "MPPEInput: Key changed during catchup [%u]\n", prefix); @@ -388,7 +391,7 @@ MPPEDispOpts(struct lcp_opt *o) } snprintf(buf + len, sizeof buf - len, " bits, state%s", - (val & MPPE_OPT_STATELESS) ? "less" : "full"); + (val & MPPE_OPT_STATELESS) ? "less" : "ful"); len += strlen(buf + len); if (val & MPPE_OPT_COMPRESSED) { |