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9b4972fc95
* tests/telnet-localhost.sh: Check regression of <https://lists.gnu.org/archive/html/bug-inetutils/2022-02/msg00010.html> bug reported by ZFeiXQ and debugged by Erik Auerswald.
254 lines
6.6 KiB
Bash
Executable File
254 lines
6.6 KiB
Bash
Executable File
#!/bin/sh
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# Copyright (C) 2011-2022 Free Software Foundation, Inc.
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#
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# This file is part of GNU Inetutils.
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#
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# GNU Inetutils is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or (at
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# your option) any later version.
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#
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# GNU Inetutils is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see `http://www.gnu.org/licenses/'.
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# Test the TELNET client as connection vehicle!
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#
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# Written by Mats Erik Andersson.
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# Prerequisites:
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#
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# * Shell: SVR4 Bourne shell, or newer.
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#
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# * id(1), kill(1), mktemp(1), tty(1).
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#
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# * Accessed by launched Inetd:
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# /etc/nsswitch.conf, /etc/passwd, /etc/protocols.
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#
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# OpenBSD uses /etc/services directly, not via /etc/nsswitch.conf.
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# Is usage explanation in demand?
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#
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if test "$1" = "-h" || test "$1" = "--help" || test "$1" = "--usage"; then
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cat <<HERE
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Minimal test for TELNET client.
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The following environment variables are used:
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VERBOSE Be verbose, if set.
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TARGET Receiving IPv4 address.
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TARGET6 Receiving IPv6 address.
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TARGET46 Receiving IPv4-mapped-IPV6 address.
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HERE
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exit 0
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fi
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. ./tools.sh
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$need_mktemp || exit_no_mktemp
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# The executables under test.
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#
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INETD=${INETD:-../src/inetd$EXEEXT}
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TELNET=${TELNET:-../telnet/telnet$EXEEXT}
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ADDRPEEK=${ADDRPEEK:-./addrpeek$EXEEXT}
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# Selected targets.
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TARGET=${TARGET:-127.0.0.1}
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TARGET6=${TARGET6:-::1}
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TARGET46=${TARGET46:-::ffff:$TARGET}
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# Step into `tests/', should the invokation
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# have been made outside of it.
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#
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test -d src && test -f tests/telnet-localhost.sh && cd tests/
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if test -n "$VERBOSE"; then
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set -x
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$INETD --version | $SED '1q'
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$TELNET --version | $SED '1q'
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fi
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# The use of telnet is portable only with a connected TTY.
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if tty >/dev/null; then
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:
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else
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echo 'No TTY assigned to this process. Skipping test.' >&2
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exit 77
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fi
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if test ! -x $INETD; then
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echo "Missing executable '$INETD'. Skipping test." >&2
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exit 77
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fi
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if test ! -x $TELNET; then
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echo "Missing executable '$TELNET'. Skipping test." >&2
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exit 77
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fi
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if test ! -x $ADDRPEEK; then
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echo "Missing executable '$ADDRPEEK'. Skipping test." >&2
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exit 77
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fi
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if test "$TEST_IPV4" = "no" && test "$TEST_IPV6" = "no"; then
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echo >&2 "Inet socket testing is disabled. Skipping test."
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exit 77
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fi
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# Check regression of crash reported here:
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# https://lists.gnu.org/archive/html/bug-inetutils/2022-02/msg00014.html
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echo 'help z ! ? z ! ? z ! ? z ! ? z ! ? z ! ? z !' | $TELNET > /dev/null
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if test $? -ne 0; then
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echo "Regression of telnet crash bug." >&2
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exit 1
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fi
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# Check regression of crash reported here:
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# https://lists.gnu.org/archive/html/bug-inetutils/2022-02/msg00009.html
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echo 'help help' | $TELNET > /dev/null
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if test $? -ne 0; then
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echo "Regression of telnet second crash bug." >&2
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exit 1
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fi
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# Check regression of crash reported here:
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# https://lists.gnu.org/archive/html/bug-inetutils/2022-02/msg00007.html
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echo "unset ' '" | $TELNET > /dev/null
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if test $? -ne 0; then
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echo "Regression of telnet third crash bug." >&2
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exit 1
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fi
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# Check regression of crash reported here:
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# https://lists.gnu.org/archive/html/bug-inetutils/2022-02/msg00010.html
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echo "set ' ' foo" | $TELNET > /dev/null
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if test $? -ne 0; then
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echo "Regression of telnet fourth crash bug." >&2
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exit 1
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fi
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# Portability fix for SVR4
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PWD="${PWD:-`pwd`}"
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# For file creation below IU_TESTDIR.
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umask 0077
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USER=`func_id_user`
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# Random base directory at testing time.
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TMPDIR=`$MKTEMP -d $PWD/tmp.XXXXXXXXXX` ||
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{
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echo 'Failed at creating test directory. Aborting.' >&2
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exit 1
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}
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INETD_CONF="$TMPDIR/inetd.conf"
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INETD_PID="$TMPDIR/inetd.pid.$$"
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posttesting () {
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if test -n "$TMPDIR" && test -f "$INETD_PID" \
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&& test -r "$INETD_PID" \
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&& kill -0 "`cat $INETD_PID`" >/dev/null 2>&1
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then
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kill "`cat $INETD_PID`" >/dev/null 2>&1 ||
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kill -9 "`cat $INETD_PID`" >/dev/null 2>&1
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fi
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test -n "$TMPDIR" && test -d "$TMPDIR" \
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&& rm -rf "$TMPDIR" $FILELIST
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}
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trap posttesting EXIT HUP INT QUIT TERM
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PORT=`expr 4973 + ${RANDOM:-$$} % 973`
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# Create an empty configuration file for inetd.
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: > "$INETD_CONF" 2>/dev/null ||
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{
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echo 'Could not create configuration file for Inetd. Aborting.' >&2
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exit 1
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}
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# This target is used for plain IPv4 and for IPv4-mapped addressing.
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if test "$TEST_IPV4" != "no"; then
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cat >> "$INETD_CONF" <<-EOF
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$TARGET:$PORT stream tcp4 nowait $USER $ADDRPEEK addrpeek addr
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EOF
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fi
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if test "$TEST_IPV6" != "no"; then
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cat >> "$INETD_CONF" <<-EOF
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$TARGET6:$PORT stream tcp6 nowait $USER $ADDRPEEK addrpeek addr
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EOF
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fi
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# Must use '-d' consistently to prevent daemonizing, but we
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# would like to suppress the verbose output.
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#
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# In non-verbose mode the variables `display' and `display_err'
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# redirect output streams to `/dev/null'.
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test -n "${VERBOSE+yes}" || display='>/dev/null'
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test -n "${VERBOSE+yes}" || display_err='2>/dev/null'
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eval "$INETD -d -p'$INETD_PID' '$INETD_CONF' $display_err &"
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# Debug mode allows the shell to recover PID of Inetd.
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spawned_pid=$!
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# Wait somewhat for the service to settle.
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sleep 2
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inetd_pid="`cat $INETD_PID 2>/dev/null`" ||
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{
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cat <<-EOT >&2
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Inetd did not create a PID-file. Aborting test,
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but loosing control whether an Inetd process is
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still around.
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EOT
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exit 1
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}
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test -z "$VERBOSE" || echo "Launched Inetd as process $inetd_pid." >&2
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telnet_opts="--no-rc --no-escape --no-login"
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errno=0
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if test "$TEST_IPV4" != "no" && test -n "$TARGET"; then
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output=`$TELNET $telnet_opts $TARGET $PORT 2>/dev/null`
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echo "$output" | eval "$GREP 'Your address is $TARGET.' $display"
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if test $? -ne 0; then
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errno=1
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echo "Failed at '$TARGET'." >&2
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fi
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fi # TEST_IPV4 && TARGET
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if test "$TEST_IPV6" != "no" && test -n "$TARGET6"; then
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output=`$TELNET $telnet_opts $TARGET6 $PORT 2>/dev/null`
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echo "$output" | eval "$GREP 'Your address is $TARGET6.' $display"
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if test $? -ne 0; then
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errno=1
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echo "Failed at '$TARGET6'." >&2
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fi
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fi # TEST_IPV6 && TARGET6
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if test "$TEST_IPV4" != "no" && test "$TEST_IPV6" != "no" \
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&& test -n "$TARGET46"; then
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output=`$TELNET $telnet_opts $TARGET46 $PORT 2>/dev/null`
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echo "$output" | eval "$GREP 'Your address is .*$TARGET.' $display"
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if test $? -ne 0; then
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echo "Informational: Unsuccessful with mapped address '$TARGET46'." >&2
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fi
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fi # TEST_IPV4 && TEST_IPV6 && TARGET46
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exit $errno
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