/usr/share/gocode/src/github.com/jasonish/go-idsrules/parse_test.go is in golang-github-jasonish-go-idsrules-dev 0.0~git20170503.0.c646b91-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 | // The MIT License (MIT)
// Copyright (c) 2016 Jason Ish
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use, copy,
// modify, merge, publish, distribute, sublicense, and/or sell copies
// of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
// BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package idsrules
import (
"os"
"strings"
"testing"
"github.com/stretchr/testify/assert"
"io"
)
func TestSplitAt(t *testing.T) {
leading, trailing := splitAt("one", " ")
if leading != "one" {
t.Fatal("not equal to 'one'")
}
if trailing != "" {
t.Fatal("expected empty string")
}
}
var validRuleTests = []struct {
input string
output Rule
}{
{
// From ET Open, Suricata 3.1.
`alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET ACTIVEX Possible NOS Microsystems Adobe Reader/Acrobat getPlus Get_atlcomHelper ActiveX Control Multiple Stack Overflows Remote Code Execution Attempt"; flow:established,to_client; content:"E2883E8F-472F-4fb0-9522-AC9BF37916A7"; nocase; content:"offer-"; nocase; pcre:"/<OBJECT\s+[^>]*classid\s*=\s*[\x22\x27]?\s*clsid\s*\x3a\s*\x7B?\s*E2883E8F-472F-4fb0-9522-AC9BF37916A7.+offer-(ineligible|preinstalled|declined|accepted)/si"; reference:url,www.securityfocus.com/bid/37759; reference:url,www.kb.cert.org/vuls/id/773545; reference:url,www.adobe.com/support/security/bulletins/apsb10-02.html; reference:url,www.exploit-db.com/exploits/11172/; reference:cve,2009-3958; reference:url,doc.emergingthreats.net/2010665; classtype:attempted-user; sid:2010665; rev:7;)`,
Rule{
Action: "alert",
Proto: "tcp",
SourceAddr: "$EXTERNAL_NET",
SourcePort: "$HTTP_PORTS",
Direction: "->",
DestAddr: "$HOME_NET",
DestPort: "any",
Msg: `ET ACTIVEX Possible NOS Microsystems Adobe Reader/Acrobat getPlus Get_atlcomHelper ActiveX Control Multiple Stack Overflows Remote Code Execution Attempt`,
Sid: uint64(2010665),
Gid: uint64(0),
},
},
{
// From ET Open, Suricata 3.1 (ciarmy.rules).
`alert ip [1.34.6.220,1.34.12.196,1.34.12.225,1.34.15.234,1.34.35.168,1.34.36.11,1.34.36.80,1.34.40.246,1.34.54.20,1.34.70.86,1.34.85.46,1.34.93.100,1.34.118.108,1.34.130.153,1.34.139.167,1.34.158.144,1.34.165.112,1.34.168.202,1.34.197.19,1.34.198.134,1.34.200.111,1.34.208.161,1.34.221.165,1.34.243.195,1.34.244.43,1.34.250.244,1.52.54.254,1.52.93.249,1.53.64.47,1.53.143.147,1.53.202.61,1.58.173.68,1.62.120.17,1.62.252.210,1.65.165.91,1.162.169.124,1.162.173.232,1.162.233.25,1.162.235.8,1.179.153.114,1.180.237.106,1.180.237.107,1.180.237.108,1.180.237.109,1.182.249.151,1.186.60.148,1.186.234.88,1.192.144.183,1.217.127.106,1.230.45.179] any -> $HOME_NET any (msg:"ET CINS Active Threat Intelligence Poor Reputation IP group 1"; reference:url,www.cinsscore.com; reference:url,www.networkcloaking.com/cins; threshold: type limit, track by_src, seconds 3600, count 1; classtype:misc-attack; sid:2403300; rev:3064;)`,
Rule{
Action: "alert",
Proto: "ip",
SourceAddr: "[1.34.6.220,1.34.12.196,1.34.12.225,1.34.15.234,1.34.35.168,1.34.36.11,1.34.36.80,1.34.40.246,1.34.54.20,1.34.70.86,1.34.85.46,1.34.93.100,1.34.118.108,1.34.130.153,1.34.139.167,1.34.158.144,1.34.165.112,1.34.168.202,1.34.197.19,1.34.198.134,1.34.200.111,1.34.208.161,1.34.221.165,1.34.243.195,1.34.244.43,1.34.250.244,1.52.54.254,1.52.93.249,1.53.64.47,1.53.143.147,1.53.202.61,1.58.173.68,1.62.120.17,1.62.252.210,1.65.165.91,1.162.169.124,1.162.173.232,1.162.233.25,1.162.235.8,1.179.153.114,1.180.237.106,1.180.237.107,1.180.237.108,1.180.237.109,1.182.249.151,1.186.60.148,1.186.234.88,1.192.144.183,1.217.127.106,1.230.45.179]",
SourcePort: "any",
Direction: "->",
DestAddr: "$HOME_NET",
DestPort: "any",
Msg: "ET CINS Active Threat Intelligence Poor Reputation IP group 1",
Sid: uint64(2403300),
Gid: uint64(0),
},
},
}
func TestValidRules(t *testing.T) {
for _, test := range validRuleTests {
rule, err := Parse(test.input)
if err != nil {
t.Errorf("Failed to parse: %s", test.input)
}
if rule.Action != test.output.Action {
t.Errorf("invalid action, expected |%s|, got |%s|",
test.output.Action, rule.Action)
}
assert.Equal(t, test.input, rule.Raw)
assert.Equal(t, test.output.SourceAddr, rule.SourceAddr)
assert.Equal(t, test.output.SourcePort, rule.SourcePort)
assert.Equal(t, test.output.DestAddr, rule.DestAddr)
assert.Equal(t, test.output.DestPort, rule.DestPort)
assert.Equal(t, test.output.Proto, rule.Proto)
assert.Equal(t, test.output.Msg, rule.Msg)
assert.Equal(t, test.output.Sid, rule.Sid)
assert.Equal(t, test.output.Gid, rule.Gid)
}
}
// Test parsing various levels of an incomplete rule.
var incompleteTests = []struct {
input string
err bool
}{
{"alert", true},
{"alert ", true},
{"alert tcp", true},
{"alert tcp ", true},
{"alert tcp any", true},
{"alert tcp any ", true},
{"alert tcp any any", true},
{"alert tcp any any ", true},
{"alert tcp any any ->", true},
{"alert tcp any any -> ", true},
{"alert tcp any any -> any", true},
{"alert tcp any any -> any ", true},
{"alert tcp any any -> any any", true},
{"alert tcp any any -> any any ", true},
{"alert tcp any any -> any any (", true},
{`alert tcp any any -> any any (msg`, true},
{`alert tcp any any -> any any (msg:`, true},
{`alert tcp any any -> any any (msg:"some message`, true},
{`alert tcp any any -> any any (msg:"some message"`, true},
{`alert tcp any any -> any any (msg:"some message";`, true},
{`alert tcp any any -> any any (msg:"some message"; sid`, true},
{`alert tcp any any -> any any (msg:"some message"; sid:`, true},
{`alert tcp any any -> any any (msg:"some message"; sid:1`, true},
{`alert tcp any any -> any any (msg:"some message"; sid:1;)`, false},
}
func TestIncompleteRules(t *testing.T) {
for _, test := range incompleteTests {
_, err := Parse(test.input)
if test.err {
assert.NotNil(t, err)
} else {
assert.Nil(t, err)
}
}
}
var invalidSidTests = []string{
`alert tcp any any -> any any (msg:"msg"; sid:-1;)`,
`alert tcp any any -> any any (msg:"msg"; sid:a;)`,
`alert tcp any any -> any any (msg:"msg"; sid:18,446,744,073,709,551,615;)`,
// One over the max value for uint64.
`alert tcp any any -> any any (msg:"msg"; sid:18446744073709551616;)`,
}
func TestInvalidSids(t *testing.T) {
for _, test := range invalidSidTests {
_, err := Parse(test)
assert.NotNil(t, err, "error expected for rule %s", test)
}
}
func TestParseOption(t *testing.T) {
option, arg, rule, err := parseOption(`msg:"Test message"; the rest of the rule...`)
assert.Nil(t, err)
assert.Equal(t, "msg", option)
assert.Equal(t, "Test message", arg)
assert.Equal(t, " the rest of the rule...", rule)
_, _, _, err = parseOption(`msg`)
assert.NotNil(t, err, "error expected")
_, _, _, err = parseOption(`msg:`)
assert.NotNil(t, err, "error expected")
_, _, _, err = parseOption(`msg:"This is a test`)
assert.NotNil(t, err, "error expected")
option, arg, rule, err = parseOption("nocase;")
assert.Nil(t, err, "err should be nil")
assert.Equal(t, "nocase", option)
assert.Equal(t, "", arg, "arg")
assert.Equal(t, "", rule, "remainder of rule")
}
func TestParseFile(t *testing.T) {
input, err := os.Open("testdata/emerging-telnet.rules")
assert.Nil(t, err)
rules, err := ParseReader(input)
assert.Nil(t, err)
assert.Equal(t, 12, len(rules))
assert.Equal(t, "alert", rules[0].Action)
}
func TestParseRuleWithList(t *testing.T) {
// Address lists should parse.
buf := `alert tcp [1.1.1.1/32,2.2.2.2/32] any -> any any (msg:"Message"; sid:1; rev:1;)`
rule, err := Parse(buf)
assert.Nil(t, err)
assert.Equal(t, "[1.1.1.1/32,2.2.2.2/32]", rule.SourceAddr)
// But like Snort, should not parse an address list with spaces.
buf = `alert tcp [1.1.1.1/32, 2.2.2.2/32] any -> any any (msg:"Message"; sid:1; rev:1;)`
rule, err = Parse(buf)
assert.NotNil(t, err)
}
func TestParseMultilineRule(t *testing.T) {
buf := `alert tcp any any -> any any ( \
msg:\"A multiline rule\"; sid:1;)
alert \
tcp any any -> any any \
( \
msg:"A rule split over many lines"; \
sid:2; rev:3; \
)
`
reader := strings.NewReader(buf)
rules, err := ParseReader(reader)
assert.Nil(t, err)
assert.Equal(t, 2, len(rules))
}
func TestParseEnabledAndDisabled(t *testing.T) {
// From ET Open, Suricata 3.1 (ciarmy.rules).
buf := `alert ip [1.34.6.220,1.34.12.196,1.34.12.225,1.34.15.234,1.34.35.168,1.34.36.11,1.34.36.80,1.34.40.246,1.34.54.20,1.34.70.86,1.34.85.46,1.34.93.100,1.34.118.108,1.34.130.153,1.34.139.167,1.34.158.144,1.34.165.112,1.34.168.202,1.34.197.19,1.34.198.134,1.34.200.111,1.34.208.161,1.34.221.165,1.34.243.195,1.34.244.43,1.34.250.244,1.52.54.254,1.52.93.249,1.53.64.47,1.53.143.147,1.53.202.61,1.58.173.68,1.62.120.17,1.62.252.210,1.65.165.91,1.162.169.124,1.162.173.232,1.162.233.25,1.162.235.8,1.179.153.114,1.180.237.106,1.180.237.107,1.180.237.108,1.180.237.109,1.182.249.151,1.186.60.148,1.186.234.88,1.192.144.183,1.217.127.106,1.230.45.179] any -> $HOME_NET any (msg:"ET CINS Active Threat Intelligence Poor Reputation IP group 1"; reference:url,www.cinsscore.com; reference:url,www.networkcloaking.com/cins; threshold: type limit, track by_src, seconds 3600, count 1; classtype:misc-attack; sid:2403300; rev:3064;)`
rule, err := Parse(buf)
assert.Nil(t, err)
assert.True(t, rule.Enabled)
rule, err = Parse("#" + buf)
assert.Nil(t, err)
assert.False(t, rule.Enabled)
}
func TestRuleReader_CommentsAndBlanks(t *testing.T) {
buf := `# Some comments
# and some blank lines.`
reader := NewRuleReader(strings.NewReader(buf))
rule, err := reader.Next()
// Should get an empty rule.
assert.Equal(t, Rule{}, rule)
// And the only error should be EOF.
assert.Equal(t, io.EOF, err)
}
func TestRuleReader_Multiline(t *testing.T) {
buf := `alert tcp $EXTERNAL_NET $HTTP_PORTS \
-> $HOME_NET any (msg:"ET \
ACTIVEX Possible NOS Microsystems Adobe Reader/Acrobat getPlus Get_atlcomHelper ActiveX Control Multiple Stack Overflows Remote Code Execution Attempt"; flow:established,to_client; content:"E2883E8F-472F-4fb0-9522-AC9BF37916A7"; nocase; content:"offer-"; nocase; pcre:"/<OBJECT\s+[^>]*classid\s*=\s*[\x22\x27]?\s*clsid\s*\x3a\s*\x7B?\s*E2883E8F-472F-4fb0-9522-AC9BF37916A7.+offer-(ineligible|preinstalled|declined|accepted)/si"; reference:url,www.securityfocus.com/bid/37759; reference:url,www.kb.cert.org/vuls/id/773545; reference:url,www.adobe.com/support/security/bulletins/apsb10-02.html; reference:url,www.exploit-db.com/exploits/11172/; reference:cve,2009-3958; reference:url,doc.emergingthreats.net/2010665; classtype:attempted-user; sid:2010665; rev:7;)`
reader := NewRuleReader(strings.NewReader(buf))
rule, _ := reader.Next()
assert.Equal(t, "ET ACTIVEX Possible NOS Microsystems Adobe Reader/Acrobat getPlus Get_atlcomHelper ActiveX Control Multiple Stack Overflows Remote Code Execution Attempt", rule.Msg)
}
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