Commit Graph

44 Commits

Author SHA1 Message Date
Brian Somers
0f2f3eb395 o Move our prompt descriptor list outside of the bundle.
It's now dealt with by the `server' object.  This simplifies
  things as we only have one list of prompt descriptors and
  the log_ routines check prompt::logactive to determine
  whether it should be used for output.
o Include the MP socket UpdateSet() result in bundle::UpdateSet().
o Don't select on the tun device unless we're in NETWORK
  phase or AUTO mode.
o Stop the idle timer when we go to DEAD phase.  We may
  have transferred a link and not had a chance to kill
  it.
o Don't fail when trying to unlink our transferred datalink
  from our descriptor lists just before the transfer.
o Add our link descriptor to the write set if we got a short
  write the last time (physical::out is set).
o Log the connection source address when a connection is closed.
o Remove descriptor::next field.  Descriptor lists are not required
  any more.
1998-05-23 22:24:50 +00:00
Brian Somers
d91d286164 MFMP: Make ppp multilink capable.
See the file README.changes, and re-read the man page.
1998-05-21 21:49:08 +00:00
Brian Somers
04eaa58c59 o Add `set autoload'. You can now set the minimum and maximum
thresholds (in terms of queued packets for a period of time)
  where -auto links will be brought up and down.  By default,
  all auto links come up when we reach NETWORK phase and never
  go down.
o Display current autoload state in `show bundle'.
o Disable the idle timer as soon as it's called.
o Disable the idle and autoload timers when exiting (in case
  we're abending).
1998-05-21 01:13:32 +00:00
Brian Somers
58d5533465 Add the `rename' command for renaming links. 1998-05-16 23:47:28 +00:00
Brian Somers
dd0645c5b7 o Add the `set mode' command for change a links current mode. It
is not possible to switch to or from dedicated or direct mode,
  but all other combinations are ok (eg. -auto -> -ddial).
o Cope with the fact that commands with optional context may not
  be able to obtain a link with command_ChooseLink() (if all links
  have been deleted for example).
o Allow `clone'ing in non-multilink mode.  We may for example want
  to configure two links in unilink mode and dial them both, using
  the one that comes up first.  It's also possible to rename
  ``deflink'' by cloning it, deleting the original, then setting
  the mode of the new link.
1998-05-15 23:58:30 +00:00
Brian Somers
e8607d386f Don't `clone' links with existing names. 1998-05-10 10:21:11 +00:00
Brian Somers
faefde08e0 Categorize the fields in struct bundle, and make the tunnel
device speed available in ``show bundle''.
1998-05-06 23:50:25 +00:00
Brian Somers
1bc9b5ba84 o Make sure we don't dereference NULL when we've lost all our links.
o Use srandomdev() for __FreeBSD__ >= 2, not just >2.
o Use srandom((time(NULL)^getpid())+random()), random() when we
  haven't got srandomdev().
1998-05-06 18:50:12 +00:00
Brian Somers
610b185f37 Create `struct sticky_route'.
Any `add' or `delete' command that uses MYADDR or HISADDR
will be added to the sticky route list (show ipcp).  When
MYADDR or HISADDR change due to IPCP negotiations, and if
`sroutes' is enabled (the default), all sticky route
entries are updated in the routing table.

The end result is that `add default hisaddr' will ``stick'',
as will ``add myaddr 255.255.255.255 127.0.0.1'' and
``add 1.2.3.4 255.255.255.0 hisaddr''.
1998-05-05 23:30:13 +00:00
Brian Somers
96c9bb21aa o Transfer file descriptors using {send,recv}msg & SCM_RIGHTS,
using the scatter/gather array to transfer the link
  information.  The whole link is now passed in one message.

This is far better than the two `/bin/cat' processes per additional
link :-)  I remember years ago thinking that file descriptor
transferral would be a really amazing facility !

Suggested by: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
         and: Eivind Eklund <eivind@yes.no>
1998-05-02 21:57:50 +00:00
Brian Somers
6f38457323 o Create a new `timer'' log level. This lets us `set
log debug'' without filling our filesystem/screen with
  junk that we don't really want to see.
o change PHYS_STDIN to PHYS_DIRECT - we can handle incoming
  connections that aren't on STDIN_FILENO now.
o Allow return values from our FSM LayerUp functions.  If
  LayerUp() fails, the FSM does an immediate FsmDown() without
  calling the fsm_parent's Layer{Up,Down} functions.
o Clear the close-on-exec flag of file descriptor 3 when executing
  chat programs so that our documented ability to communicate with
  /dev/tty via that descriptor works.  Also document it as
  descriptor 3, not 4 :-O
o Allow a ``rm'' command as an alias for ``remove''.
o Fix the bind()/connect()/accept() calls made by the MP server.
o Create bundle_SendDatalink() and bundle_ReceiveDatalink().
  This allows `struct datalink's to flatten themselves, pass
  through a pipe (read: the eye of a needle !) and come alive
  at the other end.  The donator then fork()s & exec()s pppmpipe,
  ``passing'' the connection to another ppp instance.

   *** PPP NOW TALKS MULTILINK :-))) ***

Our link utilization is hideous, and lots of code needs
tidying still.  It's also probably riddled with bugs !
It's been tested against itself only, and has hung once,
so confidence isn't high....
1998-04-30 23:53:56 +00:00
Brian Somers
1fa665f5b3 o Add the link name to modem diagnostics.
o Create struct mpserver as part of struct mp.
  mpserver creates a unix-domain socket based on the
  peers auth name and endpoint discriminator.  If it
  already exists, ppp will ``pass the link'' over to
  the owner of the socket, joining it into the bundle
  of another ppp invocation, otherwise ppp waits for
  other invocations to pass it links through this
  socket.
  The final piece of code will be the code that flattens
  our datalink info and passes it down this channel
  (not yet implemented).
1998-04-28 01:25:46 +00:00
Brian Somers
49052c9523 Negotiate MRRU, SHORTSEQ and ENDDISC. ENDDISC doesn't imply
multilink ('cos I've seen my ISP REQ it without multilink).

Setting MRRU is ifdef'd out until it's debugged and we can
merge -direct links with other running programs.

Fix MTU setting.
1998-04-23 03:23:03 +00:00
Brian Somers
3edeb0c69e Support client side DNS server negotiation, disabled
and denied by default (POLA).

o Remove ``enable'' msext.  Now, doing a ``set nbns'' will
  automatically enable a NBNS ACK/NAK rather than a REJ.
o Add accept|disable|deny|enable dns.  If we ``accept'',
  we'll tell the peer what our nameservers are (if he asks).
  The values in resolv.conf can be overridden with the
  ``set dns'' command.  If we ``enable'', we'll REQ using
  our resolv.conf entries, and any NAKs are written back to
  resolv.conf.
o Remove ``show msext'' and show the relevent IP numbers in
  ``show ipcp''.
1998-04-17 22:05:37 +00:00
Brian Somers
030e4ebba8 o Remove bundle_LinkLost() and have the modem routines simply
call datalink_Down() where appropriate rather than
  modem_Hangup().
o Now, when something horrible happens (failed read/write, loss
  of carrier etc), we go offline and run any hangup scripts etc
  in a controlled manner - exactly the same as if someone says
  ``down'' at the prompt or sends us a HUP.
o -dedicated links that fail to make the modem raw close it,
  suffer the redial timeout then try to open it again.
o Add a ``carrier lost'' warning diagnostic.
1998-04-17 22:04:36 +00:00
Brian Somers
1342caed9c o Move the accept/deny/disable/enable globals either to the
bundle (non-negotiated vars) or to their respective IPCP,
  LCP or CCP.
o Enable rolling throughput statistics by default.
o Remove the `display' command.  These values now appear in
  `show bundle', `show ipcp', `show ccp' and `show lcp'.
o Initialise auth name & key at bundle create time (oops).
o Rename pppd-deflate (the id-24 hack) to deflate24.
o Don't send both a REJ and a NAK to an IPCP or LCP REQ.
  Favour the REJ (already done at the CCP level).
o Recurse in datalink_UpdateSet() when we change state, otherwise
  we end up setting no descriptors and getting jammed in the
  imminent select() instead of doing the dial/login/hangup.
o Display our CHAP encryption method despite being built with DES.
o Display VJ as not negotiated in ``show ipcp'' when necessary.
1998-04-16 00:26:21 +00:00
Brian Somers
c08717df31 Remove `show timeout'' and show auth'' and add `show bundle''.
Mention ``show timer'' in the man page.
1998-04-11 21:50:47 +00:00
Brian Somers
565e35e50e o Remove the `mode' global - it's now per physical device.
o Shuffle things that live at the datalink level into
  ``show link'' rather than ``show modem''.
o Make both ``show'' commands prettier and more consistent,
  and display carrier status, link type and our name in
  ``show modem''.
o Show redial and reconnect information in ``show link''
  and remove ``show redial'' and ``show reconnect''.
o Down the correct link in bundle_LinkLost().
o Remove stale -direct and -background links at the end
  of our main loop, not when we know they're going.  This
  prevents unexpected pointer-invalidations...
o If we ``set server'' with the same values twice, notice
  and don't moan about failure.
o Record dial script despite our link mode.  The mode may
  be changed later (next mod) :-)  We never run scripts
  in -direct and -dedicated modes.
o Make ``set server none'' functional again.
o Correct datalink state array so that we don't report an
  ``unknown'' state.
o Pass struct ipcp to IpcpCleanInterface, not struct fsm.
o Create TUN_PREFIX define rather than hard-coding in main.c
o prompt_TtyInit now handles a NULL prompt for -direct mode
  rather than having to create one then destroy it uncleanly.
o Mention our mode in the "PPP Started" LogPHASE message.
o Bring all auto links up when we have something to send.
o Remove some redundant Physical_*() functions.
o Show which connection is running a command when logging
  commands.
o Initialise throughput uptime correctly.
1998-04-10 13:19:23 +00:00
Brian Somers
cd7bd93a81 Add the clone' and remove' commands for creating and destroying
links.
1998-04-05 22:48:25 +00:00
Brian Somers
833882f740 o Move VarMSChap into struct chap, and remove `set encrypt'
option.  We never ask a client for MSChap when we've got
  chap `enabled', and we dynamically answer using MSChap
  if the peer demands it.
o Remove all of the bundle2*() series of functions except
  bundle2datalink() as they're too expensive.  The only
  calls to bundle2datalink() are made from command.c when
  determining context.
o Write to the correct modem in term mode, and check the
  return value, dropping back to command mode if the write
  fails.

Cosmetic:
  Make the PPP COMMAND LIST section of the man page
  prettier, better and more consistent.  Alphabeticalise
  all command lists and document missing commands.
1998-04-03 19:26:29 +00:00
Brian Somers
b6217683dc Deglobalise `struct prompt':
o Our diagnostic socket has its password set in the `set socket'
    line only (not in ppp.secret).
  o Passwords are per server socket (*VarAuthKey are gone)
  o Authority is per prompt (VarLocalAuth is gone).
  o Local logging is per prompt.
  o Add a `show who' command to see who's connected.  No identd
    routine - just a `where the connection came from' display.
  o SIGUSR1 is disabled for now - we have no way of choosing a
    password for the socket created :-(

Prompts are attached as a list of `struct descriptor's in
struct bundle, and serviced under the bundles descriptor
service routines.  Ultimately, everything should be done
like this.

Cosmetic:
  o alphabeticalise SRCS in Makefile.
  o Add a few comments in command.h

TODO: Start checking that we don't overflow the descriptor sets
      in select() now that we can have any number of descriptors.
1998-04-03 19:26:02 +00:00
Brian Somers
92f4ff1ccd Move authname and authkey into struct bundle and only allow
their alteration in PHASE_DEAD.
Remove redundant pppConfs array element.
1998-04-03 19:24:49 +00:00
Brian Somers
3b0f8d2ed6 o Move struct lcp and struct ccp into struct link.
o Remove bundle2lcp(), bundle2ccp() and bundle2link().
  They're too resource-hungry and we have `owner pointers'
  to do their job.
o Make our FSM understand LCPs that are always ST_OPENED
  (with a minimum code that != 1).
o Send FSM code rejects for invalid codes.
o Make our bundle fsm_parent deal with multiple links.
o Make timer diagnostics pretty and allow access via ~t
  in `term' mode (not just when logging debug) and
  `show timers'.  Only show timers every second in debug
  mode, otherwise we get too many diagnostics to be useful
  (we probably still do).  Also, don't restrict ~m in term
  mode to depend on debug logging.
o Rationalise our bundles' phases.
o Create struct mp (multilink protocol).  This is both an
  NCP and a type of struct link.  It feeds off other NCPs
  for output, passing fragmented packets into the queues
  of available datalinks.  It also gets PROTO_MP input,
  reassembles the fragments into ppp frames, and passes
  them back to the HDLC layer that the fragments were passed
  from.
  ** It's not yet possible to enter multilink mode :-( **
o Add `set weight' (requires context) for deciding on a links
  weighting in multilink mode.  Weighting is simplistic (and
  probably badly implemented) for now.
o Remove the function pointers in struct link.  They ended up
  only applying to physical links.
o Configure our tun device with an MTU equal to the MRU from
  struct mp's LCP and a speed equal to the sum of our link
  speeds.
o `show {lcp,ccp,proto}' and `set deflate' now have optional
  context and use ChooseLink() to decide on which `struct link'
  to use.  This allows behaviour as before when in non-multilink
  mode, and allows access to the MP logical link in multilink
  mode.
o Ignore reconnect and redial values when in -direct mode and
  when cleaning up.  Always redial when in -ddial or -dedicated
  mode (unless cleaning up).
o Tell our links to `staydown' when we close them due to a signal.
o Remove remaining `#ifdef SIGALRM's (ppp doesn't function without
  alarms).
o Don't bother strdup()ing our physical link name.
o Various other cosmetic changes.
1998-04-03 19:21:56 +00:00
Brian Somers
5cf4388bdf Tidy up the parent notification stuff for -background mode.
Remove extraneous extern decls of tun_{in,out} and netfd.
1998-03-25 18:38:59 +00:00
Brian Somers
2f7866811e Make struct bundle into a sort of `struct descriptor'.
It does the fdsets/reads/writes for each of it's
datalinks.
1998-03-20 19:48:28 +00:00
Brian Somers
93ee0ff21a Display the correct amount of remaining time in `show time'. 1998-03-18 23:15:31 +00:00
Brian Somers
a0cbd833f3 Move `CleaningUp' into struct bundle. 1998-03-16 22:53:15 +00:00
Brian Somers
5ca5389af4 Move filter sets into struct bundle. 1998-03-16 22:52:54 +00:00
Brian Somers
5828db6d2d Move the IPCP into struct bundle. 1998-03-13 21:07:46 +00:00
Brian Somers
5563ebde73 Remove the second bundle_NewPhase argument and do
the tun config from bundle_LayerUp.
1998-03-13 00:44:33 +00:00
Brian Somers
879ed6fa82 De-staticise LQR information
Increment OutPackets for any packet - not just LQRs

MFC:
  o Fix a few comment typos.
  o Fix ``set timeout'' usage message and documentation.
  o Change ifOutPackets, ifOutOctets and ifOutLQRs to `u_int32_t's
    so that they wrap correctly.
  o Put the LQR in network byte order using the correct struct size
    (sizeof u_int32_t, not sizeof u_long).
  o Wrap LQR ECHO counters correctly.
  o Don't increment OutLQR count if the last LQR hasn't been replied
    to.
  o Initialise last received LQR in StartLqm.
  o Don't start the LQR timer if we're `disabled' and `accepted'.
  o Generate LQR responses when both sides are using a timer and
    we're not going to send our next LQR before the peers max timeout.
1998-03-13 00:44:26 +00:00
Brian Somers
ab886ad0f6 Move the idle timer into struct bundle. There's no
link-level idle timer for the moment.
1998-03-09 19:26:41 +00:00
Brian Somers
e2ebb036fd Do authentication at the datalink level, not the bundle level.
The bundle doesn't get a LayerUp 'till we're authenticated.

Introduce DATALINK_LCP and DATALINK_AUTH phases.
1998-03-01 01:07:49 +00:00
Brian Somers
6d6667755e Create struct fsm_parent. FSMs are created with one of these,
and the FSM passes subsequent events to them.

The datalink now hides its CCP from the bundle layer.
1998-02-27 01:22:39 +00:00
Brian Somers
503a7782d8 Shuffle around our FSMs a bit. This'll make it
easier to remove the CcpInfo, LcpInfo and IpcpInfo
globals.
1998-02-21 01:45:26 +00:00
Brian Somers
aef795cc3b Introduce the ``link'' command for controlling
individual links.
1998-02-17 19:28:01 +00:00
Brian Somers
3006ec67fe Create struct datalink.
This is a type of physical link that can chat and talk
LCP & CCP.  A bundle contains a list of these (only one
in the list for the moment).

The datalink is a type of descriptor, and dials, enters
LCP (& does CCP), kicks the bundle when its FSMs do
something interesting and does the hangup chat script
on the way down.  It also handles redials and reconnects.

There are lots of loose ends, and probably lots of bugs,
but the data structures are getting there !
1998-02-16 00:01:12 +00:00
Brian Somers
68a0f0ccdd o Add bundle_Destroy().
o Don't remove routes and DOWN the interface when we're
  closed in auto mode.
o Initialize the FSMs in bundle_Create.
o Initialize ipcp::if_mine & ipcp::if_peer only once (so
  that we don't forget that we've SIOCAIFADDR'd the interface).
o Do a SIOCDIFADDR on the specific address to avoid hurting any
  other (still non-existent) NCPs.
o Fix some error/diagnostic messages.
1998-02-08 19:29:45 +00:00
Brian Somers
455aabc3f8 o Hook the FSMs into our bundle.
o The FSM layering is now more sane.
o Move a lot of the NCP stuff into our ipcpstate rather than having it
  in the bundle, including control of the configured IP addresses.  We
  don't need hacks like the global `linkup' variable any more as the
  FSM decides when our ppp.link* files get run.  This is going to eventually
  be configurable based on FSM events anyway.
o Fix a few inconsistencies when both sides require authentication.
o We now have "Ppp..." and "PPp" prompts, reflecting authentication
  and network phase.  We don't print loads of spurious prompts as we
  change phases any more.
o Our phase is part of the bundle now.
o Fix a bug where the FSM wasn't calling LayerFinish.
o Close the FSM down correctly with a signal rather than slamming it
  down as if the line was dropped (the undocumented ``down'' command
  is still available though).
o Remove the forgotten `tunno' variable and fix references to it.
1998-02-07 20:50:08 +00:00
Brian Somers
83d1af558c Isolate fsm callback functions
Derive {lcp,ipcp,ccp}state structures from struct fsm
where convenient.
Create bundle_Down() and remove LcpDown()
1998-02-06 02:24:29 +00:00
Brian Somers
2289f24698 Move pppVars.physical into the bundle (for the moment). 1998-02-06 02:23:48 +00:00
Brian Somers
26fe3a55f3 Comment bundle.h 1998-02-04 01:03:19 +00:00
Brian Somers
820de6eb8e Bring the routing seqno into struct bundle. 1998-02-02 19:33:02 +00:00
Brian Somers
7a6f872047 Create `struct bundle' - the top level control structure.
This structure will eventually contain a list of NCPs (currently
only IPCP is supported) and a list of physical `struct link's.
It will also derive from a struct link itself.
Make ModemTimeout() static - it's way to dangerous to be called
from outside !
Bump version to 1.9.  Our first MP release should be 2.0.
1998-02-02 19:32:16 +00:00