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989790c57f
socat/CHANGES
Gerhard Rieger 989790c57f procan prints C defines important for socat
2008-01-31 21:41:13 +01:00

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new features:
new make target "gitclean"
docu source doc/socat.yo released
corrections:
exec:...,pty did not kill child process under some circumstances; fixed
by correcting typo in xio-progcall.c (thanks to Ralph Forsythe for
reporting this problem)
service name resolution failed due to byte order mistake
(thanks to James Sainsbury for reporting this problem)
corrected some print statements and variable names
make uninstall did not uninstall procan
fixed lots of weaknesses in test.sh
corrected some bugs and typos in doc/socat.yo, EXAMPLES, C comments
further changes:
procan -c prints C defines important for socat
added test OPENSSLEOF for OpenSSL half close
####################### V 1.6.0.0:
new features:
new addresses IP-DATAGRAM and UDP-DATAGRAM allow versatile broadcast
and multicast modes
new option ip-add-membership for control of multicast group membership
new address TUN for generation of Linux TUN/TAP pseudo network
interfaces (suggested by Mat Caughron); associated options tun-device,
tun-name, tun-type; iff-up, iff-promisc, iff-noarp, iff-no-pi etc.
new addresses ABSTRACT-CONNECT, ABSTRACT-LISTEN, ABSTRACT-SENDTO,
ABSTRACT-RECV, and ABSTRACT-RECVFROM for abstract UNIX domain addresses
on Linux (requested by Zeeshan Ali); option unix-tightsocklen controls
socklen parameter on system calls.
option end-close for control of connection closing allows FD sharing
by sub processes
range option supports form address:mask with IPv4
changed behaviour of SSL-LISTEN to require and verify client
certificate per default
options f-setlkw-rd, f-setlkw-wr, f-setlk-rd, f-setlk-wr allow finer
grained locking on regular files
uninstall target in Makefile (lack reported by Zeeshan Ali)
corrections:
fixed bug where only first tcpwrap option was applied; fixed bug where
tcpwrap IPv6 check always failed (thanks to Rudolf Cejka for reporting
and fixing this bug)
filan (and socat -D) could hang when a socket was involved
corrected PTYs on HP-UX (and maybe others) using STREAMS (inspired by
Roberto Mackun)
correct bind with udp6-listen (thanks to Jan Horak for reporting this
bug)
corrected filan.c peekbuff[0] which did not compile with Sun Studio Pro
(thanks to Leo Zhadanovsky for reporting this problem)
corrected problem with read data buffered in OpenSSL layer (thanks to
Jon Nelson for reporting this bug)
corrected problem with option readbytes when input stream stayed idle
after so many bytes
fixed a bug where a datagram receiver with option fork could fork two
sub processes per packet
further changes:
moved documentation to new doc/ subdir
new documents (kind of mini tutorials) are provided in doc/
####################### V 1.5.0.0:
new features:
new datagram modes for udp, rawip, unix domain sockets
socat option -T specifies inactivity timeout
rewrote lexical analysis to allow nested socat calls
addresses tcp, udp, tcp-l, udp-l, and rawip now support IPv4 and IPv6
socat options -4, -6 and environment variables SOCAT_DEFAULT_LISTEN_IP,
SOCAT_PREFERRED_RESOLVE_IP for control of protocol selection
addresses ssl, ssl-l, socks, proxy now support IPv4 and IPv6
option protocol-family (pf), esp. for openssl-listen
range option supports IPv6 - syntax: range=[::1/128]
option ipv6-v6only (ipv6only)
new tcp-wrappers options allow-table, deny-table, tcpwrap-etc
FIPS version of OpenSSL can be integrated - initial patch provided by
David Acker. See README.FIPS
support for resolver options res-debug, aaonly, usevc, primary, igntc,
recurse, defnames, stayopen, dnsrch
options for file attributes on advanced filesystems (ext2, ext3,
reiser): secrm, unrm, compr, ext2-sync, immutable, ext2-append, nodump,
ext2-noatime, journal-data etc.
option cool-write controls severeness of write failure (EPIPE,
ECONNRESET)
option o-noatime
socat option -lh for hostname in log output
traffic dumping provides packet headers
configure.in became part of distribution
socats unpack directory now has full version, e.g. socat-1.5.0.0/
corrected docu of option verify
corrections:
fixed tcpwrappers integration - initial fix provided by Rudolf Cejka
exec with pipes,stderr produced error
setuid-early was ignored with many address types
some minor corrections
####################### V 1.4.3.1:
corrections:
PROBLEM: UNIX socket listen accepted only one (or a few) connections.
FIX: do not remove listening UNIX socket in child process
PROBLEM: SIGSEGV when TCP part of SSL connect failed
FIX: check ssl pointer before calling SSL_shutdown
In debug mode, show connect client port even when connect fails
####################### V 1.4.3.0:
new features:
socat options -L, -W for application level locking
options "lockfile", "waitlock" for address level locking
(Stefan Luethje)
option "readbytes" limits read length (Adam Osuchowski)
option "retry" for unix-connect, unix-listen, tcp6-listen (Dale Dude)
pty symlink, unix listen socket, and named pipe are per default removed
after use; option unlink-close overrides this new behaviour and also
controls removal of other socat generated files (Stefan Luethje)
corrections:
option "retry" did not work with tcp-listen
EPIPE condition could result in a 100% CPU loop
further changes:
support systems without SHUT_RD etc.
handle more size_t types
try to find makedepend options with gcc 3 (richard/OpenMacNews)
####################### V 1.4.2.0:
new features:
option "connect-timeout" limits wait time for connect operations
(requested by Giulio Orsero)
option "dhparam" for explicit Diffie-Hellman parameter file
corrections:
support for OpenSSL DSA certificates (Miika Komu)
create install directories before copying files (Miika Komu)
when exiting on signal, return status 128+signum instead of 1
on EPIPE and ECONNRESET, only issue a warning (Santiago Garcia
Mantinan)
-lu could cause a core dump on long messages
further changes:
modifications to simplify using socats features in applications
####################### V 1.4.1.0:
new features:
option "wait-slave" blocks open of pty master side until a client
connects, "pty-intervall" controls polling
option -h as synonym to -? for help (contributed by Christian
Lademann)
filan prints formatted time stamps and rdev (disable with -r)
redirect filan's output, so stdout is not affected (contributed by
Luigi Iotti)
filan option -L to follow symbolic links
filan shows termios control characters
corrections:
proxy address no longer performs unsolicited retries
filan -f no longer needs read permission to analyze a file (but still
needs access permission to directory, of course)
porting:
Option dsusp
FreeBSD options noopt, nopush, md5sig
OpenBSD options sack-disable, signature-enable
HP-UX, Solaris options abort-threshold, conn-abort-threshold
HP-UX options b900, b3600, b7200
Tru64/OSF1 options keepinit, paws, sackena, tsoptena
further corrections:
address pty now uses ptmx as default if openpty is also available
####################### V 1.4.0.3:
corrections:
fix to a syslog() based format string vulnerability that can lead to
remote code execution. See advisory socat-adv-1.txt
####################### V 1.4.0.2:
corrections:
exec'd write-only addresses get a chance to flush before being killed
error handler: print notice on error-exit
filan printed wrong file type information
####################### V 1.4.0.1:
corrections:
socks4a constructed invalid header. Problem found, reported, and fixed
by Thomas Themel, by Peter Palfrader, and by rik
with nofork, don't forget to apply some process related options
(chroot, setsid, setpgid, ...)
####################### V 1.4.0.0:
new features:
simple openssl server (ssl-l), experimental openssl trust
new options "cafile", "capath", "key", "cert", "egd", and "pseudo" for
openssl
new options "retry", "forever", and "intervall"
option "fork" for address TCP improves `gender changer<65>
options "sigint", "sigquit", and "sighup" control passing of signals to
sub process (thanks to David Shea who contributed to this issue)
readline takes respect to the prompt issued by the peer address
options "prompt" and "noprompt" allow to override readline's new
default behaviour
readline supports invisible password with option "noecho"
socat option -lp allows to set hostname in log output
socat option -lu turns on microsecond resolution in log output
corrections:
before reading available data, check if writing on other channel is
possible
tcp6, udp6: support hostname specification (not only IP address), and
map IP4 names to IP6 addresses
openssl client checks server certificate per default
support unidirectional communication with exec/system subprocess
try to restore original terminal settings when terminating
test.sh uses tmp dir /tmp/$USER/$$ instead of /tmp/$$
socks4 failed on platforms where long does not have 32 bits
(thanks to Peter Palfrader and Thomas Seyrat)
hstrerror substitute wrote wrong messages (HP-UX, Solaris)
proxy error message was truncated when answer contained multiple spaces
porting:
compiles with AIX xlc, HP-UX cc, Tru64 cc (but might not link)
####################### V 1.3.2.2:
corrections:
PROXY CONNECT failed when the status reply from the proxy server
contained more than one consecutive spaces. Problem reported by
Alexandre Bezroutchko
do not SIGSEGV when proxy address fails to resolve server name
udp-listen failed on systems where AF_INET != SOCK_DGRAM (e.g. SunOS).
Problem reported by Christoph Schittel
test.sh only tests available features
added missing IP and TCP options in filan analyzer
do not apply stdio address options to both directions when in
unidirectional mode
on systems lacking /dev/*random and egd, provide (weak) entropy from
libc random()
porting:
changes for HP-UX (VREPRINT, h_NETDB_INTERNAL)
compiles on True64, FreeBSD (again), NetBSD, OpenBSD
support for long long as st_ino type (Cygwin 1.5)
compile on systems where pty can not be featured
####################### V 1.3.2.1:
corrections:
"final" solution for the ENOCHLD problem
corrected "make strip"
default gcc debug/opt is "-O" again
check for /proc at runtime, even if configure found it
src.rpm accidently supported SuSE instead of RedHat
####################### V 1.3.2.0:
new features:
option "nofork" connects an exec'd script or program directly
to the file descriptors of the other address, circumventing the socat
transfer engine
support for files >2GB, using ftruncate64(), lseek64(), stat64()
filan has new "simple" output style (filan -s)
porting:
options "binary" and "text" for controlling line termination on Cygwin
file system access (hint from Yang Wu-Zhou)
fix by Yang Wu-Zhou for the Cygwin "No Children" problem
improved support for OSR: _SVID3; no IS_SOCK, no F_GETOWN (thanks to
John DuBois)
minor corrections to avoid warnings with gcc 3
further corrections and minor improvements:
configure script is generated with autoconf 2.57 (no longer 2.52)
configure passes CFLAGS to Makefile
option -??? for complete list of address options and their short forms
program name in syslog messages is derived from argv[0]
SIGHUP now prints notice instead of error
EIO during read of pty now gives Notice instead of Error, and
triggers EOF
use of hstrerror() for printing resolver error messages
setgrent() got required endgrent()
####################### V 1.3.1.0:
new features:
integration of Wietse Venema's tcpwrapper library (libwrap)
with "proxy" address, option "resolve" controls if hostname or IP
address is sent in request
option "lowport" establishes limited authorization for TCP and UDP
connections
improvement of .spec file for RPM creation (thanks to Gerd v. Egidy)
An accompanying change in the numbering scheme results in an
incompatibility with earlier socat RPMs!
solved problems and bugs:
PROBLEM: socat daemon terminated when the address of a connecting
client did not match range option value instead of continue listening
SOLVED: in this case, print warning instead of error to keep daemon
active
PROBLEM: tcp-listen with fork sometimes left excessive number of zombie
processes
SOLVED: dont assume that each exiting child process generates SIGCHLD
when converting CRNL to CR, socat converted to NL
further corrections:
configure script now disables features that depend on missing files
making it more robust in "unsupported" environments
server.pem permissions corrected to 600
"make install" now does not strip; use "make strip; make install"
if you like strip (suggested by Peter Bray)
####################### V 1.3.0.1:
solved problems and bugs:
PROBLEM: OPENSSL did not apply tcp, ip, and socket options
SOLVED: OPENSSL now correctly handles the options list
PROBLEM: CRNL to NL and CRNL to CR conversions failed when CRNL crossed
block boundary
SOLVED: these conversions now simply strip all CR's or NL's from input
stream
porting:
SunOS ptys now work on x86, too (thanks to Peter Bray)
configure looks for freeware libs in /pkgs/lib/ (thanks to Peter Bray)
further corrections:
added WITH_PROXY value to -V output
added compile dependencies of WITH_PTY and WITH_PROXY
-?? did not print option group of proxy options
corrected syntax for bind option in docu
corrected an issue with stdio in unidirectional mode
options socksport and proxyport support service names
ftp.sh script supports proxy address
man page no longer installed with execute permissions (thanks to Peter
Bray)
fixed a malloc call bug that could cause SIGSEGV or false "out of
memory" errors on EXEC and SYSTEM, depending on program name length and
libc.
####################### V 1.3.0.0:
new features:
proxy connect with optional proxy authentication
combined hex and text dump mode, credits to Gregory Margo
address pty applies options user, group, and perm to device
solved problems and bugs:
PROBLEM: option reuseport was not applied (BSD, AIX)
SOLVED: option reuseport now in phase PASTSOCKET instead of PREBIND,
credits to Jean-Baptiste Marchand
PROBLEM: ignoreeof with stdio was ignored
SOLVED: ignoreeof now works correctly with address stdio
PROBLEM: ftp.sh did not use user supplied password
SOLVED: ftp.sh now correctly passes password from command line
PROBLEM: server.pem had expired
SOLVED: new server.pem valid for ten years
PROBLEM: socks notice printed wrong port on some platforms
SOLVED: socks now uses correct byte-order for port number in notice
further corrections:
option name o_trunc corrected to o-trunc
combined use of -u and -U is now detected and prevented
made message system a little more robust against format string attacks
####################### V 1.2.0.0:
new features:
address pty for putting socat behind a new pseudo terminal that may
fake a serial line, modem etc.
experimental openssl integration
(it does not provide any trust between the peers because is does not
check certificates!)
options flock-ex, flock-ex-nb, flock-sh, flock-sh-nb to control all
locking mechanism provided by flock()
options setsid and setpgid now available with all address types
option ctty (controlling terminal) now available for all TERMIOS
addresses
option truncate (a hybrid of open(.., O_TRUNC) and ftruncate()) is
replaced by options o-trunc and ftruncate=offset
option sourceport now available with TCP and UDP listen addresses to
restrict incoming client connections
unidirectional mode right-to-left (-U)
solved problems and bugs:
PROBLEM: addresses without required parameters but an option containing
a '/' were incorrectly interpreted as implicit GOPEN address
SOLVED: if an address does not have ':' separator but contains '/',
check if the slash is before the first ',' before assuming
implicit GOPEN.
porting:
ptys under SunOS work now due to use of stream options
further corrections:
with -d -d -d -d -D, don't print debug info during file analysis
####################### V 1.1.0.1:
new features:
.spec file for RPM generation
solved problems and bugs:
PROBLEM: GOPEN on socket did not apply option unlink-late
SOLUTION: GOPEN for socket now applies group NAMED, phase PASTOPEN
options
PROBLEM: with unidirectional mode, an unnecessary close timeout was
applied
SOLUTION: in unidirectional mode, terminate without wait time
PROBLEM: using GOPEN on a unix domain socket failed for datagram
sockets
SOLUTION: when connect() fails with EPROTOTYPE, use a datagram socket
further corrections:
open() flag options had names starting with "o_", now corrected to "o-"
in docu, *-listen addresses were called *_listen
address unix now called unix-connect because it does not handle unix
datagram sockets
in test.sh, apply global command line options with all tests
####################### V 1.1.0.0:
new features:
regular man page and html doc - thanks to kromJx for prototype
new address type "readline", utilizing GNU readline and history libs
address option "history-file" for readline
new option "dash" to "exec" address that allows to start login shells
syslog facility can be set per command line option
new address option "tcp-quickack", found in Linux 2.4
option -g prevents option group checking
filan and procan can print usage
procan prints rlimit infos
solved problems and bugs:
PROBLEM: raw IP socket SIGSEGV'ed when it had been shut down.
SOLVED: set eof flag of channel on shutdown.
PROBLEM: if channel 2 uses a single non-socket FD in bidirectional mode
and has data available while channel 1 reaches EOF, the data is
lost.
SOLVED: during one loop run, first handle all data transfers and
_afterwards_ handle EOF.
PROBLEM: despite to option NONBLOCK, the connect() call blocked
SOLVED: option NONBLOCK is now applied in phase FD instead of LATE
PROBLEM: UNLINK options issued error when file did not exist,
terminating socat
SOLVED: failure of unlink() is only warning if errno==ENOENT
PROBLEM: TCP6-LISTEN required numeric port specification
SOLVED: now uses common TCP service resolver
PROBLEM: with PIPE, wrong FDs were shown for data transfer loop
SOLVED: retrieval of FDs now pays respect to PIPE pecularities
PROBLEM: using address EXEC against an address with IGNOREEOF, socat
never terminated
SOLVED: corrected EOF handling of sigchld
porting:
MacOS and old AIX versions now have pty
flock() now available on Linux (configure check was wrong)
named pipe were generated using mknod(), which requires root under BSD
now they are generated using mkfifo
further corrections:
lots of address options that were "forgotten" at runtime are now
available
option BINDTODEVICE now also called SO-BINDTODEVICE, IF
"make install" now installs binaries with ownership 0:0
####################### V 1.0.4.2:
solved problems and bugs:
PROBLEM: EOF of one stream caused close of other stream, giving it no
chance to go down regularly
SOLVED: EOF of one stream now causes shutdown of write part of other
stream
PROBLEM: sending mail via socks address to qmail showed that crlf
option does not work
SOLVED: socks address applies PH_LATE options
PROBLEM: in debug mode, no info about socat and platform was issued
SOLVED: print socat version and uname output in debug mode
PROBLEM: invoking socat with -t and no following parameters caused
SIGSEGV
SOLVED: -t and -b now check next argv entry
PROBLEM: when opening of logfile (-lf) failed, no error was reported
and no further messages were printed
SOLVED: check result of fopen and print error message if it failed
new features:
address type UDP-LISTEN now supports option fork: it internally applies
socket option SO_REUSEADDR so a new UDP socket can bind to port after
`accepting<6E> a connection (child processes might live forever though)
(suggestion from Damjan Lango)
####################### V 1.0.4.1:
solved problems and bugs:
PROB: assert in libc caused an endless recursion
SOLVED: no longer catch SIGABRT
PROB: socat printed wrong verbose prefix for "right to left" packets
SOLVED: new parameter for xiotransfer() passes correct prefix
new features:
in debug mode, socat prints its command line arguments
in verbose mode, escape special characters and replace unprintables
with '.'. Patch from Adrian Thurston.
####################### V 1.0.4.0:
solved problems and bugs:
Debug output for lstat and fstat said "stat"
further corrections:
FreeBSD now includes libutil.h
new features:
option setsid with exec/pty
option setpgid with exec/pty
option ctty with exec/pty
TCP V6 connect test
gettimeofday in sycls.c (no use yet)
porting:
before Gethostbyname, invoke inet_aton for MacOSX
####################### V 1.0.3.0:
solved problems and bugs:
PROB: test 9 of test.sh (echo via file) failed on some platforms,
socat exited without error message
SOLVED: _xioopen_named_early(): preset statbuf.st_mode with 0
PROB: test 17 hung forever
REASON: child death before select loop did not result in EOF
SOLVED: check of existence of children before starting select loop
PROB: test 17 failed
REASON: child dead triggered EOF before last data was read
SOLVED: after child death, read last data before setting EOF
PROB: filan showed that exec processes incorrectly had fd3 open
REASON: inherited open fd3 from main process
SOLVED: set CLOEXEC flag on pty fd in main process
PROB: help printed "undef" instead of group "FORK"
SOLVED: added "FORK" to group name array
PROB: fatal messages did not include severity classifier
SOLVED: added "F" to severity classifier array
PROB: IP6 addresses where printed incorrectly
SOLVED: removed type casts to unsigned short *
further corrections:
socat catches illegal -l modes
corrected error message on setsockopt(linger)
option tabdly is of type uint
correction for UDP over IP6
more cpp conditionals, esp. for IP6 situations
better handling of group NAMED options with listening UNIX sockets
applyopts2 now includes last given phase
corrected option group handling for most address types
introduce dropping of unappliable options (dropopts, dropopts2)
gopen now accepts socket and unix-socket options
exec and system now accept all socket and termios options
child process for exec and system addresses with option pty
improved descriptions and options for EXAMPLES
printf format for file mode changed to "0%03o" with length spec.
added va_end() in branch of msg()
changed phase of lock options from PASTOPEN to FD
support up to four early dying processes
structural changes:
xiosysincludes now includes sysincludes.h for non xio files
new features:
option umask
CHANGES file
TYPE_DOUBLE, u_double
OFUNC_OFFSET
added getsid(), setsid(), send() to sycls
procan prints sid (session id)
mail.sh gets -f (from) option
new EXAMPLEs for file creation
gatherinfo.sh now tells about failures
test.sh can check for much more address/option combinations
porting:
ispeed, ospeed for termios on FreeBSD
getpgid() conditional for MacOS 10
added ranlib in Makefile.in for MacOS 10
disable pty option if no pty mechanism is available (MacOS 10)
now compiles and runs on MacOS 10 (still some tests fail)
setgroups() conditional for cygwin
sighandler_t defined conditionally
use gcc option -D_GNU_SOURCE
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