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#

# regression test for the long config line problem.

# the bug we are testing for is this:

#

# in the buggy versions of ssh, if the config file contained

# a line longer than 1022 chars, any content beyond that was

# treated as a separate line or lines.  if the long line happened

# to be a comment line, the remainder of the line would be treated

# as normal input, resulting in nonsensical error messages.

#

# also, if the config file contained any other errors later on,

# the reported line numbers would be incorrect.

# 

# remove temp files created for this test

cleanup()

{

	/bin/rm -f "$FAKE_CONFIG_FILE"

}

# print a string s, filled out with blanks to the given length.

lenline()

{

	len="$1" s="$2"

	printf "%-${len}.${len}s\n" "$s"

}

#

# create a config file with some long lines to trigger

# the long line bug if it is present.

#

mkconfig()

{

	n="$READCONF_MAX_LINE_LENGTH"

	lenline "$n"          "# 1. just at the limit, should be ok"

	lenline `expr $n + 1` "# 2. over the limit should be an Error"

	echo                  "# 3. ok"

	echo                  "# 4. ok"

	echo                  "# 5. ok"

	echo                  "6. this line should cause an Error"

}

# given the output, print on one line the line numbers of lines with errors.

get_line_numbers()

{

	elines=`echo "$*" | sed -n -e 's/.*line \([0-9]*\):.*/\1/p' | sort -u`

	echo $elines

}

main()

{

	verbose "test $tid: $DESC"

	mkconfig > "$FAKE_CONFIG_FILE" || exit 1

	err=`ssh -F "$FAKE_CONFIG_FILE" -NnTx 127.0.0.1 date 2>&1`

	xstat=$?

	cleanup

	# the command should have failed.

	if [ "$xstat" -eq 0 ]; then

		fail "expected failure did not happen"

	fi

	# get the line numbers of the errors"

	errlines=`get_line_numbers "$err"`

	# lines 2 and 6 only should have errors

	expected="2 6"

	if [ x"$errlines" != x"$expected" ]; then

		fail "errlines=$errlines; expected $expected"

	fi

}

# ----- start of mainline code

DESC="test long config lines"

tid="cfg-longline"

READCONF_MAX_LINE_LENGTH=1022

FAKE_CONFIG_FILE=/tmp/fake-ssh-config-$$.tmp

main