Address SYSTEM, when terminating, shutted down its parent addresses

CHANGES

@@ -172,6 +172,10 @@ corrections:
 	Test: IGNOREEOF_REV
 	Thanks to Franz Fasching for reporting this bug.
 
+	Address SYSTEM, when terminating, shutted down its parent addresses,
+	e.g. an SSL connection which the parent assumed to still be active.
+	Test: SYSTEM_SHUTDOWN
+
 porting:
 	Red Hat issue 1020203: configure checks fail with some compilers.
 	Use case: clang

test.sh

@@ -12188,6 +12188,61 @@ unix-recvfrom .       .        unixport .        -e   FILE:/dev/null
 "
 
 
+# bug fix: SYSTEM address child process shut down parents sockets including
+# SSL connection under some circumstances.
+NAME=SYSTEM_SHUTDOWN
+case "$TESTS" in
+*%$N%*|*%functions%*|*%bugs%*|*%system%*|*%openssl%*|*%socket%*|*%$NAME%*)
+TEST="$NAME: SYSTEM address does not shutdown its parents addresses"
+# start an OpenSSL echo server using SYSTEM:cat
+# start an OpenSSL client that sends data
+# when the client recieves its data and terminates without error the test succeeded
+# in case of the bug the client issues an error like:
+# SSL_connect(): error:1408F119:SSL routines:SSL3_GET_RECORD:decryption failed or bad record mac
+if ! eval $NUMCOND; then :; else
+tf="$td/test$N.stdout"
+te="$td/test$N.stderr"
+tdiff="$td/test$N.diff"
+da="test$N $(date) $RANDOM"
+CMD0="$SOCAT $opts OPENSSL-LISTEN:$PORT,reuseaddr,cipher=aNULL,verify=0 SYSTEM:cat"
+CMD1="$SOCAT $opts - OPENSSL-CONNECT:$LOCALHOST:$PORT,cipher=aNULL,verify=0"
+printf "test $F_n $TEST... " $N
+$CMD0 >/dev/null 2>"${te}0" &
+pid0=$!
+waittcp4port $PORT 1
+echo "$da" |$CMD1 >"${tf}1" 2>"${te}1"
+rc1=$?
+kill $pid0 2>/dev/null; wait
+if [ $rc1 -ne 0 ]; then
+    $PRINTF "$FAILED\n"
+    echo "rc1=$rc1"
+    echo "$CMD0 &"
+    echo "$CMD1"
+    cat "${te}0"
+    cat "${te}1"
+    numFAIL=$((numFAIL+1))
+    listFAIL="$listFAIL $N"
+elif ! echo "$da" |diff - "${tf}1" >"$tdiff" 2>&1; then
+    $PRINTF "$FAILED\n"
+    echo "diff:"
+    cat "$tdiff"
+    echo "$CMD0 &"
+    echo "$CMD1"
+    cat "${te}0"
+    cat "${te}1"
+    numFAIL=$((numFAIL+1))
+    listFAIL="$listFAIL $N"
+else
+    $PRINTF "$OK\n"
+    numOK=$((numOK+1))
+fi
+fi # NUMCOND
+ ;;
+esac
+PORT=$((PORT+1))
+N=$((N+1))
+
+
 ###############################################################################
 # here come tests that might affect your systems integrity. Put normal tests
 # before this paragraph.

xio-system.c

@@ -1,5 +1,5 @@
 /* source: xio-system.c */
-/* Copyright Gerhard Rieger 2001-2009 */
+/* Copyright Gerhard Rieger */
 /* Published under the GNU General Public License V.2, see file COPYING */
 
 /* this file contains the source for opening addresses of system type */
@@ -64,6 +64,10 @@ static int xioopen_system(int argc, const char *argv[], struct opt *opts,
    if (status == 0) {	/* child */
       int numleft;
 
+      /* do not shutdown connections that belong our parent */
+      sock[0] = NULL;
+      sock[1] = NULL;
+
       if (setopt_path(opts, &path) < 0) {
 	 /* this could be dangerous, so let us abort this child... */
 	 Exit(1);