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https://repo.or.cz/socat.git
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LISTEN based addresses applied some address options to the listening FD instead of the connected FD
This commit is contained in:
Gerhard Rieger
parent
9ce2ff3492
commit
6ccae440f1
7 changed files with 88 additions and 14 deletions
5
CHANGES
5
CHANGES
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@ -1,5 +1,10 @@
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corrections:
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LISTEN based addresses applied some address options, e.g. so-keepalive,
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to the listening file descriptor instead of the connected file
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descriptor
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Thanks to Ulises Alonso for reporting this bug
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make failed after configure with non gcc compiler due to missing
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include. Thanks to Horacio Mijail for reporting this problem
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@ -131,13 +131,12 @@ PH_LATE FD is ready, before start of data loop
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PH_LATE2 FD is ready, dropping privileges
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SOCKET with LISTEN and FORK:
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SOCKET with LISTEN and ACCEPT:
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PH_INIT retrieving info from original state
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PH_EARLY before any other processing
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PH_PRESOCKET before socket call
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PH_SOCKET for socket call
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PH_PASTSOCKET after socket call
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PH_PREBIND before socket bind()
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PH_BIND during socket bind()
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PH_PASTBIND past socket bind()
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@ -147,7 +146,9 @@ PH_PASTLISTEN after listen()
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PH_PREACCEPT before accept()
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PH_ACCEPT during accept()
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PH_PASTACCEPT after accept()
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# and the following on the new FD:
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PH_FD soon after FD creation or identification
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PH_PASTSOCKET after socket call
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PH_CONNECTED phase common with connect
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PH_PREFORK before forking
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PH_FORK during fork()
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@ -1,6 +1,6 @@
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#! /bin/bash
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# source: predialog.sh
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# Copyright Gerhard Rieger 2009
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# Copyright Gerhard Rieger
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# Published under the GNU General Public License V.2, see file COPYING
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# This is an example script that shows how to write a script for use with socat
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@ -15,6 +15,14 @@
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RINFD=3
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ROUTFD=4
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if [ -z "$SOCAT" ]; then
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if type socat2 >/dev/null 2>&1; then
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SOCAT=socat2
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else
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SOCAT="./socat"
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fi
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fi
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verbose=
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# parse options
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SPACES=" "
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@ -50,4 +58,4 @@ wait
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msg "starting data transfer"
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# now just pass traffic in both directions
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#SOCAT_OPTS="-lu -d -d -d -d"
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exec socat $SOCAT_OPTS - "fd:$ROUTFD:$RINFD"
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exec $SOCAT $SOCAT_OPTS - "fd:$ROUTFD:$RINFD"
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64
test.sh
64
test.sh
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@ -2835,10 +2835,13 @@ esac
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PORT=$((PORT+1))
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N=$((N+1))
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# TCP6-LISTEN may also listen for IPv4 connections. Test if option
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# ipv6-v6only=0 shows this behaviour.
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NAME=IPV6ONLY0
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case "$TESTS" in
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*%$N%*|*%functions%*|*%ip6%*|*%ipapp%*|*%tcp%*|*%$NAME%*)
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TEST="$NAME: option ipv6-v6only=0 listens on IPv4"
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# create a listening TCP6 socket and try to connect to the port using TCP4
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if ! eval $NUMCOND; then :;
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elif ! testaddrs tcp ip4 >/dev/null || ! runsip4 >/dev/null; then
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$PRINTF "test $F_n $TEST... ${YELLOW}TCP4 not available${NORMAL}\n" $N
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@ -2856,8 +2859,8 @@ tdiff="$td/test$N.diff"
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tsl=$PORT
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ts="127.0.0.1:$tsl"
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da="test$N $(date) $RANDOM"
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CMD1="$SOCAT $opts TCP6-listen:$tsl,ipv6-v6only=0,reuseaddr PIPE"
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CMD2="$SOCAT $opts stdout%stdin TCP4:$ts"
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CMD1="$SOCAT $opts TCP6-LISTEN:$tsl,ipv6-v6only=0,reuseaddr PIPE"
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CMD2="$SOCAT $opts STDOUT%STDIN TCP4:$ts"
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printf "test $F_n $TEST... " $N
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$CMD1 >"$tf" 2>"${te}1" &
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pid=$! # background process id
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@ -2886,6 +2889,8 @@ esac
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PORT=$((PORT+1))
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N=$((N+1))
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# TCP6-LISTEN may also listen for IPv4 connections. Test if option
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# ipv6-v6only=1 turns off this behaviour.
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NAME=IPV6ONLY1
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case "$TESTS" in
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*%$N%*|*%functions%*|*%ip6%*|*%ipapp%*|*%tcp%*|*%$NAME%*)
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@ -10559,6 +10564,8 @@ SOL_SOCKET="$($PROCAN -c |grep "^#define[[:space:]]*SOL_SOCKET[[:space:]]" |cut
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SO_REUSEADDR="$($PROCAN -c |grep "^#define[[:space:]]*SO_REUSEADDR[[:space:]]" |cut -d' ' -f3)"
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# test the generic setsockopt-int option
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if false; then
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# this test no longer works due to fix for options on listening sockets
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NAME=SETSOCKOPT_INT
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case "$TESTS" in
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*%$N%*|*%functions%*|*%ip4%*|*%tcp%*|*%generic%*|*%$NAME%*)
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@ -10628,6 +10635,8 @@ fi # NUMCOND, SO_REUSEADDR
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esac
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PORT=$((PORT+1))
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N=$((N+1))
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#
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fi
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NAME=SCTP4STREAM
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@ -11562,6 +11571,57 @@ N=$((N+1))
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fi # false
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# LISTEN addresses in socat up to 1.7.2.1 and 2.0.0-b7 applied many file
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# descriptor, socket, and TCP options only to the listening socket instead of the
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# connection socket.
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NAME=LISTEN_KEEPALIVE
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case "$TESTS" in
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*%functions%*|*%bugs%*|*%listen%*|*%keepalive%*|*%socket%*|*%$NAME%*)
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TEST="$NAME: keepalive option is applied to connection socket"
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# instance 0 has TCP-LISTEN with option so-keepalive and invokes filan after
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# accept(). filan writes its output to the socket. instance 1 connects to
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# instance 0. The value of the sockets so-keepalive option is checked, it must
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# be 1
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if ! eval $NUMCOND; then :; else
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tf="$td/test$N.stdout"
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te="$td/test$N.stderr"
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#tdiff="$td/test$N.diff"
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#da="test$N $(date) $RANDOM"
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CMD0="$SOCAT $opts TCP4-LISTEN:$PORT,reuseaddr,so-keepalive EXEC:\"$FILAN -i 1\",nofork"
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CMD1="$SOCAT $opts - TCP4:$LOCALHOST:$PORT"
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printf "test $F_n $TEST... " $N
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eval $CMD0 >/dev/null 2>"${te}0" &
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pid0=$!
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waittcp4port $PORT 1
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$CMD1 >"${tf}1" 2>"${te}1"
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KEEPALIVE="$(cat "${tf}1" |tail -n +2 |sed -e "s/.*KEEPALIVE=//" -e "s/[[:space:]].*//")"
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rc1=$?
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kill $pid0 2>/dev/null; wait
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if [ -z "$KEEPALIVE" ]; then
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$PRINTF "$NO_RESULT\n"
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echo "$CMD0 &"
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echo "$CMD1"
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cat "${te}0"
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cat "${te}1"
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numWARN=$((numWARN+1))
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elif [ "$KEEPALIVE" = "1" ]; then
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$PRINTF "$OK\n";
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numOK=$((numOK+1))
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else
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$PRINTF "$FAILED\n"
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echo "$CMD0 &"
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echo "$CMD1"
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cat "${te}0"
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cat "${te}1"
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numFAIL=$((numFAIL+1))
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fi
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fi # NUMCOND
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;;
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esac
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PORT=$((PORT+1))
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N=$((N+1))
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###############################################################################
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# here come tests that might affect your systems integrity. Put normal tests
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# before this paragraph.
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@ -1,5 +1,5 @@
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/* source: xio-ip6.c */
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/* Copyright Gerhard Rieger 2001-2012 */
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/* Copyright Gerhard Rieger */
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/* Published under the GNU General Public License V.2, see file COPYING */
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/* this file contains the source for IP6 related functions */
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@ -20,7 +20,7 @@ static char *inet6addr_info(const struct in6_addr *sa, char *buff, size_t blen);
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#ifdef IPV6_V6ONLY
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const struct optdesc opt_ipv6_v6only = { "ipv6-v6only", "ipv6only", OPT_IPV6_V6ONLY, GROUP_SOCK_IP6, PH_PASTSOCKET, TYPE_BOOL, OFUNC_SOCKOPT, SOL_IPV6, IPV6_V6ONLY };
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const struct optdesc opt_ipv6_v6only = { "ipv6-v6only", "ipv6only", OPT_IPV6_V6ONLY, GROUP_SOCK_IP6, PH_PREBIND, TYPE_BOOL, OFUNC_SOCKOPT, SOL_IPV6, IPV6_V6ONLY };
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#endif
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#ifdef IPV6_JOIN_GROUP
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const struct optdesc opt_ipv6_join_group = { "ipv6-join-group", "join-group", OPT_IPV6_JOIN_GROUP, GROUP_SOCK_IP6, PH_PASTBIND, TYPE_IP_MREQN, OFUNC_SOCKOPT, SOL_IPV6, IPV6_JOIN_GROUP };
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10
xio-listen.c
10
xio-listen.c
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@ -148,8 +148,6 @@ int _xioopen_listen(struct single *xfd, int xioflags, struct sockaddr *us, sockl
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return STAT_RETRYLATER;
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}
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applyopts(xfd->rfd, opts, PH_PASTSOCKET);
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applyopts_cloexec(xfd->rfd, opts);
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applyopts(xfd->rfd, opts, PH_PREBIND);
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@ -184,6 +182,7 @@ int _xioopen_listen(struct single *xfd, int xioflags, struct sockaddr *us, sockl
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}
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#endif /* WITH_UNIX */
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applyopts(xfd->rfd, opts, PH_PRELISTEN);
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retropt_int(opts, OPT_BACKLOG, &backlog);
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if (Listen(xfd->rfd, backlog) < 0) {
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Error3("listen(%d, %d): %s", xfd->rfd, backlog, strerror(errno));
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@ -284,9 +283,6 @@ int _xioopen_listen(struct single *xfd, int xioflags, struct sockaddr *us, sockl
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sockaddr_info((struct sockaddr *)pa, pas,
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infobuff, sizeof(infobuff)));
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applyopts(xfd->rfd, opts, PH_FD);
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applyopts(xfd->rfd, opts, PH_CONNECTED);
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if (dofork) {
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pid_t pid; /* mostly int; only used with fork */
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sigset_t mask_sigchld;
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@ -352,6 +348,10 @@ int _xioopen_listen(struct single *xfd, int xioflags, struct sockaddr *us, sockl
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break;
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}
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}
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applyopts(xfd->rfd, opts, PH_FD);
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applyopts(xfd->rfd, opts, PH_PASTSOCKET);
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applyopts(xfd->rfd, opts, PH_CONNECTED);
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if ((result = _xio_openlate(xfd, opts)) < 0)
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return result;
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@ -115,7 +115,7 @@ const struct optdesc opt_so_debug = { "so-debug", "debug", OPT_SO_DEBUG,
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const struct optdesc opt_so_acceptconn={ "so-acceptconn","acceptconn",OPT_SO_ACCEPTCONN,GROUP_SOCKET,PH_PASTSOCKET,TYPE_INT, OFUNC_SOCKOPT, SOL_SOCKET, SO_ACCEPTCONN};
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#endif /* SO_ACCEPTCONN */
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const struct optdesc opt_so_broadcast= { "so-broadcast", "broadcast", OPT_SO_BROADCAST,GROUP_SOCKET, PH_PASTSOCKET, TYPE_INT, OFUNC_SOCKOPT, SOL_SOCKET, SO_BROADCAST};
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const struct optdesc opt_so_reuseaddr= { "so-reuseaddr", "reuseaddr", OPT_SO_REUSEADDR,GROUP_SOCKET, PH_PASTSOCKET, TYPE_INT, OFUNC_SOCKOPT, SOL_SOCKET, SO_REUSEADDR};
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const struct optdesc opt_so_reuseaddr= { "so-reuseaddr", "reuseaddr", OPT_SO_REUSEADDR,GROUP_SOCKET, PH_PREBIND, TYPE_INT, OFUNC_SOCKOPT, SOL_SOCKET, SO_REUSEADDR};
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const struct optdesc opt_so_keepalive= { "so-keepalive", "keepalive", OPT_SO_KEEPALIVE,GROUP_SOCKET, PH_FD, TYPE_INT, OFUNC_SOCKOPT, SOL_SOCKET, SO_KEEPALIVE};
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#if HAVE_STRUCT_LINGER
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const struct optdesc opt_so_linger = { "so-linger", "linger", OPT_SO_LINGER, GROUP_SOCKET, PH_PASTSOCKET, TYPE_LINGER,OFUNC_SOCKOPT,SOL_SOCKET, SO_LINGER };
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