| 1 | #!/bin/bash |
| 2 | # |
| 3 | # Copyright (C) 2012 Christian Babeux <christian.babeux@efficios.com> |
| 4 | # |
| 5 | # SPDX-License-Identifier: GPL-2.0-only |
| 6 | # |
| 7 | # This program is free software; you can redistribute it and/or modify it |
| 8 | # under the terms of the GNU General Public License, version 2 only, as |
| 9 | # published by the Free Software Foundation. |
| 10 | # |
| 11 | # This program is distributed in the hope that it will be useful, but WITHOUT |
| 12 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 14 | # more details. |
| 15 | # |
| 16 | # You should have received a copy of the GNU General Public License along with |
| 17 | # this program; if not, write to the Free Software Foundation, Inc., 51 |
| 18 | # Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | |
| 20 | TEST_DESC="Filtering - Invalid filters" |
| 21 | |
| 22 | CURDIR=$(dirname $0)/ |
| 23 | TESTDIR=$CURDIR/../../.. |
| 24 | SESSION_NAME="filter-invalid" |
| 25 | EVENT_NAME="bogus" |
| 26 | ENABLE_EVENT_STDERR="/tmp/invalid-filters-stderr" |
| 27 | TRACE_PATH=$(mktemp -d) |
| 28 | NUM_GLOBAL_TESTS=2 |
| 29 | NUM_UST_TESTS=135 |
| 30 | NUM_KERNEL_TESTS=135 |
| 31 | NUM_TESTS=$(($NUM_UST_TESTS+$NUM_KERNEL_TESTS+$NUM_GLOBAL_TESTS)) |
| 32 | |
| 33 | source $TESTDIR/utils/utils.sh |
| 34 | |
| 35 | function enable_lttng_event_filter |
| 36 | { |
| 37 | domain="$1" |
| 38 | sess_name="$2" |
| 39 | event_name="$3" |
| 40 | filter="$4" |
| 41 | |
| 42 | $TESTDIR/../src/bin/lttng/$LTTNG_BIN enable-event $event_name -s $sess_name \ |
| 43 | $domain --filter "$filter" 2> $ENABLE_EVENT_STDERR 1> /dev/null |
| 44 | |
| 45 | # Enable must fail |
| 46 | if [ $? -eq 0 ]; then |
| 47 | fail "Enable lttng event with filtering and invalid filter" |
| 48 | return 1 |
| 49 | else |
| 50 | pass "Enable lttng event with filtering and invalid filter" |
| 51 | return 0 |
| 52 | fi |
| 53 | } |
| 54 | |
| 55 | function test_invalid_filter |
| 56 | { |
| 57 | domain="$1" |
| 58 | test_invalid_filter="$2" |
| 59 | |
| 60 | diag "Test filter expression with invalid filter" |
| 61 | diag "Filter: $test_invalid_filter" |
| 62 | |
| 63 | # Create session |
| 64 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH |
| 65 | |
| 66 | # Apply filter |
| 67 | enable_lttng_event_filter $domain $SESSION_NAME $EVENT_NAME "$test_invalid_filter" |
| 68 | |
| 69 | # Destroy session |
| 70 | destroy_lttng_session_ok $SESSION_NAME |
| 71 | } |
| 72 | |
| 73 | function test_bytecode_limit |
| 74 | { |
| 75 | domain="$1" |
| 76 | |
| 77 | # Current bytecode limitation is 65536 bytes long. |
| 78 | # Generate a huge bytecode with some perl-fu |
| 79 | BYTECODE_LIMIT=`perl -e 'print "intfield" . " && 1" x5460'` |
| 80 | |
| 81 | diag "Test filter bytecode limits (64KiB)" |
| 82 | |
| 83 | # Create session |
| 84 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH |
| 85 | |
| 86 | # Apply filter |
| 87 | enable_lttng_event_filter $domain $SESSION_NAME $EVENT_NAME "$BYTECODE_LIMIT" |
| 88 | |
| 89 | # Destroy session |
| 90 | destroy_lttng_session_ok $SESSION_NAME |
| 91 | } |
| 92 | |
| 93 | plan_tests $NUM_TESTS |
| 94 | |
| 95 | print_test_banner "$TEST_DESC" |
| 96 | |
| 97 | OLDIFS="$IFS" |
| 98 | IFS=$'\n' |
| 99 | INVALID_FILTERS=( |
| 100 | # Unsupported ops |
| 101 | "intfield*1" |
| 102 | "intfield/1" |
| 103 | "intfield+1" |
| 104 | "intfield-1" |
| 105 | "1+11111-3333+1" |
| 106 | "(1+2)*(55*666)" |
| 107 | "1+2*55*666" |
| 108 | "asdf + 1 > 1" |
| 109 | "asdfas < 2332 || asdf + 1 > 1" |
| 110 | "!+-+++-------+++++++++++-----!!--!44+1" |
| 111 | "aaa||(gg)+(333----1)" |
| 112 | "1+1" |
| 113 | # Unmatched parenthesis |
| 114 | "((((((((((((((intfield)))))))))))))" |
| 115 | '0 || ("abc" != "def")) && (3 < 4)' |
| 116 | "a->" |
| 117 | "a-->a" |
| 118 | "a.b.c->d.e.f+1" |
| 119 | # String can\'t be root node |
| 120 | "\"somestring\"" |
| 121 | # Unary op on string not allowed |
| 122 | "!\"somestring\"" |
| 123 | # Comparison with string type not allowed |
| 124 | "\"somestring\" > 42" |
| 125 | "\"somestring\" > 42.0" |
| 126 | "42 > \"somestring\"" |
| 127 | "42.0 > \"somestring\"" |
| 128 | # Logical operator with string type not allowed |
| 129 | "\"somestring\" || 1" |
| 130 | "1 || \"somestring\"" |
| 131 | "\$ctx == 0" |
| 132 | "0 == \$ctx" |
| 133 | # Only \$ctx is supported for now |
| 134 | "\$global.value == 0" |
| 135 | "0 == \$global.value" |
| 136 | # Cannot compare two full star globbing patterns |
| 137 | '"hello*world" == "yes*man"' |
| 138 | '"hello*world" == "yesman*"' |
| 139 | '"helloworld*" == "yes*man"' |
| 140 | # May only use != and == operators when one of them is a full |
| 141 | # star globbing pattern |
| 142 | '"hello*world" < field' |
| 143 | '"hello*world" <= field' |
| 144 | '"hello*world" >= field' |
| 145 | '"hello*world" > field' |
| 146 | '"hello*world" || field' |
| 147 | '"hello*world" && field' |
| 148 | 'field < "hello*world"' |
| 149 | 'field <= "hello*world"' |
| 150 | 'field >= "hello*world"' |
| 151 | 'field > "hello*world"' |
| 152 | 'field && "hello*world"' |
| 153 | 'field || "hello*world"' |
| 154 | ) |
| 155 | IFS="$OLDIFS" |
| 156 | |
| 157 | start_lttng_sessiond |
| 158 | diag "Test UST filters" |
| 159 | |
| 160 | i=0 |
| 161 | while [ "$i" -lt "${#INVALID_FILTERS[@]}" ]; do |
| 162 | echo "${INVALID_FILTERS[$i]}" |
| 163 | test_invalid_filter -u "${INVALID_FILTERS[$i]}" |
| 164 | let "i++" |
| 165 | done |
| 166 | |
| 167 | test_bytecode_limit -u |
| 168 | |
| 169 | if [ "$(id -u)" == "0" ]; then |
| 170 | isroot=1 |
| 171 | else |
| 172 | isroot=0 |
| 173 | fi |
| 174 | |
| 175 | skip $isroot "Root access is needed. Skipping all kernel invalid filter tests." $NUM_KERNEL_TESTS || |
| 176 | { |
| 177 | diag "Test kernel filters" |
| 178 | i=0 |
| 179 | while [ "$i" -lt "${#INVALID_FILTERS[@]}" ]; do |
| 180 | echo "${INVALID_FILTERS[$i]}" |
| 181 | test_invalid_filter -k "${INVALID_FILTERS[$i]}" |
| 182 | let "i++" |
| 183 | done |
| 184 | |
| 185 | test_bytecode_limit -k |
| 186 | } |
| 187 | stop_lttng_sessiond |
| 188 | |
| 189 | rm -f $ENABLE_EVENT_STDERR |
| 190 | rm -rf $TRACE_PATH |