o Use INADDR_ANY and INADDR_BROADCAST instead of 0 and 0xffffffff
for IP addresses & masks.
o Move struct compreq into ipcp.c (it's none of anyone elses
business).
o Rename MAX_STATES to MAX_VJ_STATES.
Don't mention the authors name at startup. He's already credited
in the man page. Instead, make the message consistent with the
one given to the diagnostic port (and fix the grammar when entering
`term' mode).
Don't credit the zlib author in the man page as ppp isn't linked
directly with zlib (it's shared).
Mention when the OpenBSD port was first made available.
The delay defaults to 1 sec (as it always has) unless we've done
a ~p in interactive mode or we've actually detected a HDLC frame.
This is now cleanly implemented (via async timers) so that it is
possible for LCP to come up despite the delay if an LCP REQ is
received.
This will hopefully solve situations with slow servers or slirp
scenarios (where ECHO is left on the port for a second or so before
the peer enters packet mode).
Also, ~p in interactive mode no longer changes the value of the default
openmode delay and -dedicated mode enters packet mode in the right state
according to the value of openmode.
interactive mode.
Use `netfd' in fcntl() and tc[gs]etattr() calls rather than
the hard coded descriptor 0.
Use _FILENO constants from unistd.h
This un-breaks things after my recent `close(0)' in interactive
mode.
Close STDIN_FILENO, and open _PATH_TTY O_RDONLY as `netfd'. This
has the effect of allowing `show route' to output more than about
a page of data (on FreeBSD, not OpenBSD....). I have no idea why,
except that it was a direct consequence of the tcsetattr() in
TtyCommandMode(). My previous fix (closing descriptor 0) `fixed'
this because all calls to tcsetattr() failed :-(
interrupted with a SIGALRM. In fact, select() sets the
passed time to zero, making the previous implementation
terminate always after 1/10th of a second !
Also, deal with someone changing the clock while we're
sleeping (and restart the whole sleep).
Dangers pointed out by: Theo de Raadt <deraadt@cvs.openbsd.org>
Show the IP range (if specified) in "show ipcp".
Close unused descriptors 0 and 2 in interactive mode.
Pass (size_t *) rather than (int *) to sysctl().
Disallow connections from port numbers <1024 as low port numbers
can only really mean trouble (ftp bounces etc.).
Discussed at length with: Theo de Raadt <deraadt@cvs.openbsd.org>
fd_set, make sure that all descriptors >2 are closed
when we start - otherwise we're asking for a dump in
FD_SET().
Problem pointed out by: Theo de Raadt <deraadt@cvs.openbsd.org>
Validate the peers suggested IP by attempting to make a routing table
entry.
Give up IPCP negotiation if the peer NAKs us with an unusable IP.
Always SIOCDIFADDR then SIOCAIFADDR when configuring the tun device.
Using SIOCSIFDSTADDR allows duplicate dst addresses (which we don't
want)!!!
Allow up to 200 interface names (was 50) (now that ppp can play server
properly).
Up the version number (1.5 -> 1.6).
Cosmetic:
Log unexpected CCP packets in the CCP log rather than the ERROR log.
Log unexpected Config Reqs in the appropriate LCP/IPCP/CCP log rather
than the ERROR log.
Log failed route additions and deletions with WARN, not TCPIP.
Log the option id and length for unrecognised IPCP options.
Change some .Sq to .Ar in the man page.
Remove extraneous decls.
Add ``const'' to several places.
Allow ``make NOALIAS=1'' to remove IP aliasing.
Merge with OpenBSD - only the Makefiles vary.
We can now survive a compile with
-Wall -Wbad-function-cast -Wcast-align -Wcast-qual
-Winline -Wmissing-declarations -Wmissing-prototypes
-Wnested-externs -Wpointer-arith -Wredundant-decls
-Wshadow -Wstrict-prototypes -Wwrite-strings -Wchar-subscripts
(although the Makefile just contains -Wall).
avoids the situation where we specify label ``x'' on the command
line, and label ``x'' has a ``load y'' command embedded in it.
When the line comes up, we want to use ``x'' from ppp.linkup,
not ``y''.
allowing for a possible header on the front of all packets.
In OpenBSD, there's a structure containing the address
family here.
If we're building under OpenBSD, set up the ``flags'' part
of struct tuninfo (not there under FreeBSD) so that we config
the interface as POINTOPOINT.
Prefix prototypes with ``extern'' in os.c for consistency.
These changes are cosmetic under FreeBSD, but allow ppp to
build & work under OpenBSD (bar the srandomdev() stuff,
the inclusing of <net/if_var.h> and some Makefile symantecs).
o Add "allow" command:
"allow users a b c" gives access to users a, b and c.
"allow modes auto" gives those users access to auto mode only.
"allow users *" and "allow modes *" are accepted.
No users and all modes are allowed by default.
UID 0 can do anything.
o Set the current label with the "load" and "dial" commands
so that the call to ppp.linkdown makes sense.
o Up the verison number.
o Don't OR MODE_AUTO for -background and -ddial.
o Don't OR MODE_INTER when we get a diagnostic connection.
o Allow up to 40 args per line (was 20).
o "set ifaddr" only changes the interface in AUTO mode (with other
modes, it happens after IPCP negotiation).
o Sort command descriptions in the man page.
o Support -dedicated mode where we just talk ppp forever (no login etc).
Stay as the invoking uid as much as possible.
Execution as a normal user is still forbidden for now,
so these changes are pretty ineffective.
The next commit will implement the modifications suggested
on -hackers a number of days ago.
o Report modem connect time properly
o Report bytes in/out over physical media
o Fix phases (TERMINATE is *higher than* DEAD)
o Do a LayerFinish from LcpDown
o Bring down IPCP & CCP when we enter PHASE_TERMINATE
o Give a new prompt when we go to PHASE_DEAD
o Stop the modem timer properly when idle
o Treat sig 15 like an exiting carrier loss
o Log (DEBUG) offline & online transitions
o Add missing $Id$s
o Move extern decls from .c -> .h files
o Staticize
o Remove #includes from .h files
o style(9)ify includes
o bcopy -> memcpy
bzero -> memset
bcmp -> memcmp
index -> strchr
rindex -> strrchr
o Move timeout.h -> timer.h (making it consistent w/ timer.c)
o Add -Wmissing-prototypes
Support VJ slot id compression.
Previously, ppp would negotiate a max slot between 2 & 15
(if asked), and would agree to slot id compression (if asked).
It would then proceed to use 16 slots and no compression
anyway. The result was a rather unusable connection.
file get created. We don't create lock files over non-tty
connections, but we *do* create lock files in -direct mode.
This leaves us capable of adding utmp/wtmp support for
successful pap & chap logins (coming soon).
close(1);
close(2);
x = open(ctermid(NULL), O_RDWR|O_NONBLOCK);
close(0)
on a tty causes select() to return an exception for descriptor x !
This is the case in RELENG_2_2, but not in 2.2.2. I'm not sure why.
Instead of doing the x=open() and close(0), we just do x=0 now.
Problem pointed out by: Greg Lehey <grog@lemis.com>
Tomi Vainio <tomppa@fidata.fi>
isatty(1) ! Keep 0 open for this till the modem's
been set up by either dup()ing 0 or by opening
ctermid(NULL) (if isatty(0)).
Discussed problem with: Tomi Vainio <tomppa@fidata.fi>
Made it finally dawn on me: Angelo Turetta <ATuretta@stylo.it>
o Output the correct device for "show modem"
while in -direct mode.
o Cosmetic: Moan a bit more when we can't open
the [modem] device.
o Call OpenModem() in a more "natural" way.
o Add some LogDEBUG in OpenModem().
Insist that uid == 0 for client ppp
Disallow client sockets if no password is specified
Don't exit on failure to open client socket for listening
Allow specification of null local password
Use reasonable size (smaller) ``vector''s in auth.c
Fix "passwd ..." usage message
Insist on "all" as arg to "quit" (if any)
Drop client socket connection before Cleanup() when "quit all"
This tells ppp to loopback packets addressed to
the ppp interface IP coming *from* the tun
device.
This means that you can ping the tun interface IP
from inside :-)
INT cause a hangup - not exiting for -ddial & -auto.
HUP must exit because init sends this at system shutdown
time (why, I don't know), and we don't want to end up
redialing after the HUP (due to another dfilter packet).
Pointed out by and discussed with: ache
Catch SIGUSR1 to re-init listening socket.
Document signal behaviour.
Add missing '\n's to LogPrintf(LogWARN,...)
Main() returns int not void.
AF_LOCAL ideal suggested a long time ago by: joerg
o Style police
o Make hangup abort the current connection, not
necessarily exiting (-auto/-ddial).
o Trap HUP and INT during DoChat and abort the
connection attempt. This means you can now
type "dial" and change your mind with ^C, or
HUP the process to stop it dialing.
Slapped into doing it by: Chuck Robey <chuckr@glue.umd.edu>
o Allow "set var" with no args to blank var (don't req "").
o Zero VarTerm ASAP if not in interactive mode.
o Never print anything to stdout in -direct mode.
o Count redial when failing to open modem.
o Increase device size to 40 characters (for host:port).
o Remove missed "if (fd == 0) fd = 1;".
o Don't give up on incoming non-terminal connections.
o Use syslog
o Remove references to stdout/stderr (incl perror())
o Introduce VarTerm - the interactive terminal or zero
o Allow "set timeout" to affect current session
o Change "set debug" to "set log"
o Allow "set log [+|-]flag"
o Make MSEXT and PASSWDAUTH stuff the default
o Move all #ifdef DEBUG stuff into the code - this
shouldn't be too much overhead. It's now controlled
with "set log +debug"
o Add "set log command, debug, tun, warn, error, alert"
o Remove cdefs.h, and assume an ansi compiler.
o Improve all diagnostic output
o Don't trap SIGSEGV
o SIGHUP now terminates again (log files are controlled
by syslog)
o Call CloseModem() when changing devices
o Fix parsing of third arg of "delete"
I think this fixes the "magic is same" problems that some
people have been experiencing.
The man page is being rewritten. It'll follow soon.
alias commands simply won't work. Only root may specify the
location of the alias lib (otherwise, it's hard-coded).
Make logprintf silently fail if LogOpen hasn't been called.
Suggested by: eivind
of reconnect & -background.
o Fix reconnect anomolies.
o Make reconnect apply to failed LQR hangups (& mention in man page).
o Make reconnect effective in -background mode.
o Listen on socket in -background mode.
o Try all phone numbers in -background mode.
o Insist on system arg in -background mode.
o Make a control-connection close command exit in -background mode.
o Output status message to stdout on exit of parent in -background mode.
o Don't notify parent of success too soon.
o Describe termination EX_* code.
o Miscelaneous diagnostic corrections.
o Remove redundant connect_time from modem.c.
o Don't repeatedly DownConnection().
the connection after an unexpected loss of carrier:
set reconnect timer ntries
The man page warns against using this command when your
timeout value is slightly more than the other sides :{}
Suggested by: burton@bsampley.vip.best.com (Burton Sampley)
list has been dialed. Alternate number dialing has no "pause".
Suggested by: joerg
Document this behaviour. Document that the number of dial attempts
applies to the number of phone calls rather than the number of times
each number is dialed. Add a missing .El. Give a decent description
of how to connect to an ISP.
and quitting telnet immediately (while phone number dialed)
Log client connection/disconnection with PHASE_BIT now.
Add more error recovery on client disconnection
Accept SIGHUP as a "re-open logfile" signal. As ppp
doesn't set it's serial line to it's controlling terminal,
we can use HUP :)
This is a candidate for 2.2. The log.[ch] changes won't
conflict, but the main.c changes will. We just want to change the
kill(...,SIGHUP) to a SIGTERM and change the signal(SIGHUP,Hangup)
to a pending_signal(SIGHUP,LogReOpen).
These changes should fix the signal "problems" in ppp.
The signal changes should really be put into 2.2 too !
The following patches should do it. There were some other
changes made by Andrey recently that havn't been brought
into 2.2, it may be worth doing them now.
we need now.
Don't assume that file descriptor can't be 0 (many places)
Protect FD_* macros from being used with negative descriptors
Shorten MS EXT show help to fit 80 cols
dangerous! Signal handlers themself must be fixed to not call malloc,
but no pended handlers, it will be correct fix. In finite case each signal
handler can set some variable which will be analized later, but calling
handler functions manually is too dangerous (f.e. signals not blocked while
the handler or handlers switch executed in this case). Of course this
code can be fixed instead of removing, but it not worth fixing in any case.
Should go into 2.2
In addition sig.c code shows following dangerous fragments (there can be more,
but I stop after two):
This fragment
if (fn == SIG_DFL || fn == SIG_IGN) {
handler[sig-1] = (sig_type)0;
<------------- here
signal(sig,fn);
} else {
cause NULL pointer reference when signal comes
"here", but more worse fragment is below:
void handle_signals() {
int sig;
if (caused)
for (sig=0; sig<__MAXSIG; sig++, caused>>=1)
if (caused&1)
(*handler[sig])(sig+1);
}
caused is bitmask which set corresponding bit on each signal coming.
And now imagine, what happens when some signal comes (bit sets) while loop
is executed (see caused>>=1 !!!)
In this light carrier drop situation was (as gdb shows)
1. SIGSEGV in handle_signals because some junk called as *handler reference.
2. Since SIGSEGV was pended too (== never happens),
it can cause various range of disasters.
Remove #include's from sig.h and get dependant modules to include them
themselves. Make inclusion of if_var.h depend on __FreeBSD_version so
that the -current version of ppp can be used with 2.1.*
2.2 Candidate ?
All signal() calls have been changed to pending_signal() calls.
pending_signal() is defined in the new sig.c file. It remembers
the handler and traps the signal with a function that will remember
the signal.
main.c now calls handle_signals() to actually call the required
handlers (if the above handler was called).
If this doesn't close PR2662 (was PR2347), I'll cry.
Joerg, I think this should go into 2.2, but I havn't done anything
about it because I'm bound to botch it with the new sig.[ch] files.
I've just "cvs add"'d sig.[ch] so far.... can you update to 2.2 and
tell me what you did ? Thanks.
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.
to be used to expand things beyond the size of the buffer passed in. Also
do a general cleanup of sprintf -> snprintf as well as strcpy and strncat
safety. Also expand some buffers to allow for the largest possible data
that might be used.
This is a 2.2 candidate. However, it needs to be vetted on -current
since little testing has been done on this due to my lack of PPP on
this machine.
Reviewed by: Jordan Hubbard, Peter Wemm, Guido van Rooij
connecting to a host immediately in the foreground.
I would like to be able to run ppp from a script so that my script can be
sure that it is connected to the 'net before it continues running:
# Dial up the internet.
ppp -background myprovider || exit 1
do-some-net-command
# Hang up the modem.
kill -HUP `cat /var/run/ppp.tun0.pid`
Another problem is that the current ppp calls its process id file
`/var/run/PPP.server', which may conflict if you have more than one IP
tunnel interface available.
Closes PR#1469
Submitted by: Gord Matzigkeit <gord@enci.ucalgary.ca>
(otherwise ppp's behavior remains unchanged) and documented by myself,
Steve Sims, Nate Williams, Martin Renters and god-only-knows who else. :-)
Submitted by: nate
Obtained from: Charles Mott <cmott@srv.net>
to keep the link up, so it re-dials whenever it detects the link go
down. This is useful for 'dedicated' links who use PPP.
It's been used for over a year w/out problems at different sites.
required. a core is not dumped at first connecting time and
dumped at second or third time. (patch I)
2. A routine for "show route" refers out of allocated space.
Values pointed by "lp" should be read as CHAR, I think.
there is also no free() for disallocation. (patch II)
Here is also a patch for an improvement: In current imprementation,
even if PPP connection is disconnected by time out, prompt of
interactive mode does not change from "PPP>" to "ppp>" to
indicate the disconnection on a terminal.
So I modified the code to do that. (patch III)
Submitted-By: NAKAMURA Motonori <motonori@econ.kyoto-u.ac.jp>
add some logging functionality which I find very useful.
'set debug link' will record just link up/down and address assignments.
'set debug connect' will record the entire chat dialog
'set debug carrier' will record just chat lines including 'CARRIER'
(so that I can be sure I'm getting a 28.8 line).
There was a global change required to permit LogPrintf to take a bit
mask instead of a bit position value (to permit logging some events
on either of two flags, so that no change in 'set debug lcp' would
result from the code supporting 'link'. Thus the diffs are rather
long for such a small change. The man page is also touched.
Oh, and there was a slight syntax problem in route.c
Reviewed by: phk
Submitted by: Tony Kimball <alk@Think.COM>
to int32_t. I only fixed the ones that I noticed the warnings for.
Perhaps most of the format strings are correct now because they were
wrong before. Except of course if int32_t isn't compatible with `int'.
*not* our controlling terminal (SIGHUP can coming in other case)
2) Add HUPCL for non-dedicated lines to be shure that modem
properly resetted.
3) Correct usage string.
2) Improve on-line help subsystem
3) Make 'term' mode works even carrier dropped (old code
close line forever here)
4) Make 'term' mode 8bit clean.
5) Improve manual page
6) #ifdef DEBUG diagnostic about missing optional files.
7) Don't put interactive dialing info to logfile
ppp based on these patches for about 3 weeks with no downtime.
The original submitters comments:
Two features iijppp has over kernel ppp that I like are predictor1
compression and demand dialing. Here are a few bug fixes.
I expanded the priority queueing scheme and discovered it was broken
due to the assignment at ip.c line 300. All packets were being
queued at the same priority.
Fixing priority queueing broke predictor1 compression. Packets
were compressed before being queued and predictor1 worked as long
as the packets were popped off the queue in the same order they
were pushed onto the queue.
There were a few byte order problems in IP header tests also.
There is a recursion problem in SendLqrReport(). LcpClose() is
called when "Too many echo packets are lost" which winds up in
SendLqrReport() again. I believe the original intention was to
just stop the LQR timer with the call to StopLqr() but the side
effects hurt.
Submitted by: John Capo <jc@irbs.com>
A settable redial timer helps to avoid the problem where both ends
of a link want to dial at the same time and the line winds up busy
for both ends. The process id is logged in /var/run/PPP.system where
system is the name of the called system. When both ends of a link
are running in demand dial mode, you need an easy way to get the pid
of the ppp on the called end so it can be killed and re-started with
-direct or pppd started to handle the incoming ppp session.
2. Add secret description for "set timeout" to man.
Reviewed by: Atsushi Murai <amurai@spec.co.jp>
Submitted by: John Capo <jc@irbs.com>
dropped - devet@adv.IAEhv.nl (Arjan de Vet)
2. Will not read data from telnet connection - John Capo <jc@irbs.com>
3. Using LQM option could be drop the link due to LcpLayerDown() doesn't
stop LQR timer. - Brian <brian@awfulhak.demon.co.uk>
4. Allow to describe a syntax of filters that is not only port number
but also by name in /etc/service. - Rich Murphey <rich@lamprey.utmb.edu>
Reviewed by: Atsushi Murai <amurai@spec.co.jp>
Submitted by: devet@adv.IAEhv.nl, jc@irbs.com, brian@awfulhak.demon.co.uk,
rich@lamprey.utmb.edu
2. Optimize ModemQlen.
3. Sending ProtoReject for Unknow protocol (i.e. IPX)
4. Avoid select looping by reading tun under the high system load.
5. Adding Local version String for maintenance.
6. Just more speak rather silent ignore if you type invalid key words.
2.Implment Redail function as working correctly.
3.Clean up a code as I notice.
4.Now, RTT getting close to 50ms with ISDN/TA 38400bps !!
Reviewed by: amurai@spec.co.jp
Submitted by: amurai@spec.co.jp
o Supporting SYNC SIO device (But need a device driver)
- add "set speed sync"
o Fixing bug for Predictor-1 function.
o Add new parameter that re-sent interval for set timeout commands.
o Improving RTT (Round Trip Time) and reducing processor time.
- Previous Timer service was using polling, and now using
SIGALRM ;-)
- A 0.94beta2 will not work correctly....
-- Follows are additinal feature not including 0.94beta2
o Support Proxy ARP
- add "enable/disable proxy" commands
o Marging common routine in CHAP/PAP.
o Enhancing LCP/IPCP log information.
o Support local Authfication connection on port 300x and tty.
- You can set up pair of your "hostname -s" and
password in ppp.secret. if either ppp.secret file nor
your hostname line don't exist, It will notify a message
and working as same as previous version.(Backword compatibility)
- If you did set up them, It's allow connection but nothing to do
except help and passwd command.
- add "passwd yourpasswd" commands
o Support afilter - keep Alive filter that a packet can send/receiving
according to ifilter/ofilter but doesn't count it as preventing idle
timer expires.
- Same syntax of other filters.
o Fixing bugs reported by current user for previous one. Thanks !!
Reviewed by: Atsushi Murai (amurai@spec.co.jp)
