Commit graph

14 commits

Author SHA1 Message Date
Brian Somers d919580716 Use the return value from snprintf() to keep a track of the length of
the display string in MPPEDispOpts.

PR:		35836
MFC After:	2 weeks
2002-03-13 10:21:19 +00:00
Mike Barcroft fd8e4ebc8c o Move NTOHL() and associated macros into <sys/param.h>. These are
deprecated in favor of the POSIX-defined lowercase variants.
o Change all occurrences of NTOHL() and associated marcros in the
  source tree to use the lowercase function variants.
o Add missing license bits to sparc64's <machine/endian.h>.
  Approved by: jake
o Clean up <machine/endian.h> files.
o Remove unused __uint16_swap_uint32() from i386's <machine/endian.h>.
o Remove prototypes for non-existent bswapXX() functions.
o Include <machine/endian.h> in <arpa/inet.h> to define the
  POSIX-required ntohl() family of functions.
o Do similar things to expose the ntohl() family in libstand, <netinet/in.h>,
  and <sys/param.h>.
o Prepend underscores to the ntohl() family to help deal with
  complexities associated with having MD (asm and inline) versions, and
  having to prevent exposure of these functions in other headers that
  happen to make use of endian-specific defines.
o Create weak aliases to the canonical function name to help deal with
  third-party software forgetting to include an appropriate header.
o Remove some now unneeded pollution from <sys/types.h>.
o Add missing <arpa/inet.h> includes in userland.

Tested on:	alpha, i386
Reviewed by:	bde, jake, tmm
2002-02-18 20:35:27 +00:00
Brian Somers d9dc3116bf Correct alignment issues
Obtained from: OpenBSD
2001-09-13 10:03:20 +00:00
Brian Somers a7428f1858 Send a reset request for every packet received when our encryption
dictionaries are out of sync.

This avoids the complications that happen when our original reset
request gets lost in transit (quite likely in hind sight, given a
lossy link) when we end up ignoring the peer for the next (up to)
256 packets.

Submitted by:	Nick Sayer <nsayer@quack.kfu.com>
2001-08-27 10:42:21 +00:00
Brian Somers 662a42f752 When we miss one or more packets in stateful mode *and* need to
perform a key change, *and* our sequence numbers have wrapped,
ensure that the number of key changes is calculated correctly.

The previous code counted down from a negative number to zero,
re-encrypting the current key on each iteration - this took some
time and strangely enough got the answer wrong !!!

Fix a(nother) spelling mistake while I'm there.
2001-07-07 03:06:20 +00:00
Brian Somers 6301d506fb Reduce the interface MTU by 2 when MPPE has been successfully negotiated.
This is necessary because MPPE will combine the protocol id with the
payload received on the tun interface, encrypt it, then prepend its
own protocol id, effectively increasing the payload by two bytes.
2001-07-03 22:20:19 +00:00
Brian Somers 6cf6ee7625 Add support for stateful MPPE (microsoft encryption) providing
encryption compatibility with Windows 2000.  Stateful encryption
uses less CPU but is bad on lossy transports.

The ``set mppe'' command has been expanded.  If it's used with any
arguments, ppp will insist on encryption, closing LCP if the other
end refuses.

Unfortunately, Microsoft have abused the CCP reset request so that
receiving a reset request does not result in a reset ack when using
MPPE...

Sponsored by:	Monzoon Networks AG and FreeBSD Services Limited
2001-06-18 15:00:22 +00:00
Brian Somers 7f89db65f5 Add a ``Usable'' function to the ccp switch. The function
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.
2001-02-04 22:53:11 +00:00
Brian Somers 019d32bf74 Make the MPPE MasterKey Invalid messages a bit clearer (it now
complains that you can't do MPPE without CHAP81).

Reset MasterKeyValid to zero when we hit phase DEAD.
2001-02-04 01:08:24 +00:00
Brian Somers 12df0d6c58 Log the ``MPPE: MasterKey is invalid...'' message as a CCP
diagnostic rather than a warning.
2000-12-29 22:25:56 +00:00
Brian Somers 542962ddf9 Introduce another global (MPPE_IsServer) so that we initiate the
MPPE session keys correctly.

I'm a bit dubious about this code.  It seems that the session keys
are initialised differently based on whether you're the client or
the server.  One side is the server if it issues the first challenge,
but of course you can issue a challenge from both sides.... at the
same time.  Sounds like another wonderful M$ assumption...

Ppp can now talk to itself correctly using encryption.

Problem solved by:	Ustimenko Semen <semen@iclub.nsu.ru>
Hair torn out by:	me
2000-11-07 23:19:11 +00:00
Brian Somers 1c25c5e077 Merge some OpenBSD/NetBSD fixes to the recent MPPE/CHAP0x81 update. 2000-11-05 03:25:09 +00:00
Brian Somers 9b9967924b Various whitespace changes.
Make some functions static.
2000-10-30 00:15:29 +00:00
Brian Somers a8d604ab74 Add MPPE and MSChap v2 support (denied and disabled by default)
Submitted by: Ustimenko Semen <semen@iclub.nsu.ru>
2000-10-30 00:15:04 +00:00