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Parameterizing Painless script literals #9770

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merged 11 commits into from
Dec 28, 2018
Merged

Parameterizing Painless script literals #9770

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f3d1097
Parameterizing some script literals
ycombinator Dec 22, 2018
3d6b989
Fixing script property name
ycombinator Dec 22, 2018
9bff8ab
Fixing syntax error
ycombinator Dec 22, 2018
2b141e6
Reverting nginx change
ycombinator Dec 22, 2018
6fd85ea
Reverting auditd pipeline change (for now)
ycombinator Dec 26, 2018
c12153f
Work around painless limitation
ycombinator Dec 26, 2018
e7e07ae
Working around Painless issue for nginx module ingest pipeline
ycombinator Dec 26, 2018
eac4f37
Parameterizing one more script in redis module ingest pipeline
ycombinator Dec 26, 2018
c13108f
Adding back lang field to explicitly set script language to Painless
ycombinator Dec 28, 2018
ad33e77
Reformatting nginx access log
ycombinator Dec 28, 2018
3860d00
Fixing indent
ycombinator Dec 28, 2018
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8 changes: 6 additions & 2 deletions filebeat/module/auditd/log/ingest/pipeline.json
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Original file line number Diff line number Diff line change
Expand Up @@ -71,15 +71,19 @@
},
{
"convert": {
"field" : "auditd.log.sequence",
"field": "auditd.log.sequence",
"type": "integer",
"ignore_missing": true
}
},
{
"script": {
"lang": "painless",
"inline": " String trimQuotes(def v) {\n if (v.startsWith(\"'\") || v.startsWith('\"')) {\n v = v.substring(1, v.length());\n }\n if (v.endsWith(\"'\") || v.endsWith('\"')) {\n v = v.substring(0, v.length()-1);\n } \n return v;\n }\n \n boolean isHexAscii(String v) {\n def len = v.length();\n if (len == 0 || len % 2 != 0) {\n return false; \n }\n \n for (int i = 0 ; i < len ; i++) {\n if (Character.digit(v.charAt(i), 16) == -1) {\n return false;\n }\n }\n\n return true;\n }\n \n String convertHexToString(String hex) {\n\t StringBuilder sb = new StringBuilder();\n\n for (int i=0; i < hex.length() - 1; i+=2) {\n String output = hex.substring(i, (i + 2));\n int decimal = Integer.parseInt(output, 16);\n sb.append((char)decimal);\n }\n\n return sb.toString();\n }\n \n def possibleHexKeys = ['exe', 'cmd'];\n \n def audit = ctx.auditd.get(\"log\");\n Iterator entries = audit.entrySet().iterator();\n while (entries.hasNext()) {\n def e = entries.next();\n def k = e.getKey();\n def v = e.getValue(); \n\n // Remove entries whose value is ?\n if (v == \"?\" || v == \"(null)\" || v == \"\") {\n entries.remove();\n continue;\n }\n \n // Convert hex values to ASCII.\n if (possibleHexKeys.contains(k) && isHexAscii(v)) {\n v = convertHexToString(v);\n audit.put(k, v);\n }\n \n // Trim quotes.\n if (v instanceof String) {\n v = trimQuotes(v);\n audit.put(k, v);\n }\n \n // Convert arch.\n if (k == \"arch\" && v == \"c000003e\") {\n audit.put(k, \"x86_64\");\n }\n }"
"source": " String trimQuotes(def singleQuote, def doubleQuote, def v) {\n if (v.startsWith(singleQuote) || v.startsWith(doubleQuote)) {\n v = v.substring(1, v.length());\n }\n if (v.endsWith(singleQuote) || v.endsWith(doubleQuote)) {\n v = v.substring(0, v.length()-1);\n } \n return v;\n }\n \n boolean isHexAscii(String v) {\n def len = v.length();\n if (len == 0 || len % 2 != 0) {\n return false; \n }\n \n for (int i = 0 ; i < len ; i++) {\n if (Character.digit(v.charAt(i), 16) == -1) {\n return false;\n }\n }\n\n return true;\n }\n \n String convertHexToString(String hex) {\n\t StringBuilder sb = new StringBuilder();\n\n for (int i=0; i < hex.length() - 1; i+=2) {\n String output = hex.substring(i, (i + 2));\n int decimal = Integer.parseInt(output, 16);\n sb.append((char)decimal);\n }\n\n return sb.toString();\n }\n \n def possibleHexKeys = ['exe', 'cmd'];\n \n def audit = ctx.auditd.get(\"log\");\n Iterator entries = audit.entrySet().iterator();\n while (entries.hasNext()) {\n def e = entries.next();\n def k = e.getKey();\n def v = e.getValue(); \n\n // Remove entries whose value is ?\n if (v == \"?\" || v == \"(null)\" || v == \"\") {\n entries.remove();\n continue;\n }\n \n // Convert hex values to ASCII.\n if (possibleHexKeys.contains(k) && isHexAscii(v)) {\n v = convertHexToString(v);\n audit.put(k, v);\n }\n \n // Trim quotes.\n if (v instanceof String) {\n v = trimQuotes(params.single_quote, params.double_quote, v);\n audit.put(k, v);\n }\n \n // Convert arch.\n if (k == \"arch\" && v == \"c000003e\") {\n audit.put(k, \"x86_64\");\n }\n }",
"params": {
"single_quote": "'",
"double_quote": "\""
}
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}
},
{
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247 changes: 137 additions & 110 deletions filebeat/module/nginx/access/ingest/default.json
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Original file line number Diff line number Diff line change
@@ -1,112 +1,139 @@
{
"description": "Pipeline for parsing Nginx access logs. Requires the geoip and user_agent plugins.",
"processors": [{
"grok": {
"field": "message",
"patterns":[
"\"?%{IP_LIST:network.forwarded_ip} - %{DATA:user.name} \\[%{HTTPDATE:nginx.access.time}\\] \"%{GREEDYDATA:nginx.access.info}\" %{NUMBER:http.response.status_code:long} %{NUMBER:nginx.access.body_sent.bytes:long} \"%{DATA:http.request.referrer}\" \"%{DATA:nginx.access.agent}\""
],
"pattern_definitions": {
"IP_LIST": "%{IP}(\"?,?\\s*%{IP})*"
},
"ignore_missing": true
}
}, {
"grok": {
"field": "nginx.access.info",
"patterns": [
"%{WORD:http.request.method} %{DATA:url.original} HTTP/%{NUMBER:http.version}",
""
],
"ignore_missing": true
}
}, {
"remove": {
"field": "nginx.access.info"
}
}, {
"split": {
"field": "network.forwarded_ip",
"separator": "\"?,?\\s+"
}
}, {
"set": {
"field": "source.ip",
"value": ""
}
}, {
"script": {
"lang": "painless",
"inline": "boolean isPrivate(def ip) { try { StringTokenizer tok = new StringTokenizer(ip, '.'); int firstByte = Integer.parseInt(tok.nextToken()); int secondByte = Integer.parseInt(tok.nextToken()); if (firstByte == 10) { return true; } if (firstByte == 192 && secondByte == 168) { return true; } if (firstByte == 172 && secondByte >= 16 && secondByte <= 31) { return true; } if (firstByte == 127) { return true; } return false; } catch (Exception e) { return false; } } def found = false; for (def item : ctx.network.forwarded_ip) { if (!isPrivate(item)) { ctx.source.ip = item; found = true; break; } } if (!found) { ctx.source.ip = ctx.network.forwarded_ip[0]; }"
}
}, {
"remove":{
"field": "message"
}
}, {
"rename": {
"field": "@timestamp",
"target_field": "read_timestamp"
}
}, {
"date": {
"field": "nginx.access.time",
"target_field": "@timestamp",
"formats": ["dd/MMM/YYYY:H:m:s Z"]
}
}, {
"remove": {
"field": "nginx.access.time"
}

}, { "user_agent": { "field": "nginx.access.agent" }
}, {
"rename": {
"field": "nginx.access.agent",
"target_field": "user_agent.original"
}
}, {
"rename": {
"field": "user_agent.os",
"target_field": "user_agent.os.full_name",
"ignore_missing": true
}
}, {
"rename": {
"field": "user_agent.os_name",
"target_field": "user_agent.os.name",
"ignore_missing": true
}
}, {
"rename": {
"field": "user_agent.os_major",
"target_field": "user_agent.os.major",
"ignore_missing": true
}
}, {
"rename": {
"field": "user_agent.os_minor",
"target_field": "user_agent.os.minor",
"ignore_missing": true
}
}, {
"rename": {
"field": "user_agent.os_patch",
"target_field": "user_agent.os.patch",
"ignore_missing": true
}

},{
"geoip": {
"field": "source.ip",
"target_field": "source.geo",
"ignore_missing": true
}
}],
"on_failure" : [{
"set" : {
"field" : "error.message",
"value" : "{{ _ingest.on_failure_message }}"
}
}]
"description": "Pipeline for parsing Nginx access logs. Requires the geoip and user_agent plugins.",
"processors": [
{
"grok": {
"field": "message",
"patterns": [
"\"?%{IP_LIST:network.forwarded_ip} - %{DATA:user.name} \\[%{HTTPDATE:nginx.access.time}\\] \"%{GREEDYDATA:nginx.access.info}\" %{NUMBER:http.response.status_code:long} %{NUMBER:nginx.access.body_sent.bytes:long} \"%{DATA:http.request.referrer}\" \"%{DATA:nginx.access.agent}\""
],
"pattern_definitions": {
"IP_LIST": "%{IP}(\"?,?\\s*%{IP})*"
},
"ignore_missing": true
}
},
{
"grok": {
"field": "nginx.access.info",
"patterns": [
"%{WORD:http.request.method} %{DATA:url.original} HTTP/%{NUMBER:http.version}",
""
],
"ignore_missing": true
}
},
{
"remove": {
"field": "nginx.access.info"
}
},
{
"split": {
"field": "network.forwarded_ip",
"separator": "\"?,?\\s+"
}
},
{
"set": {
"field": "source.ip",
"value": ""
}
},
{
"script": {
"lang": "painless",
"source": "boolean isPrivate(def dot, def ip) { try { StringTokenizer tok = new StringTokenizer(ip, dot); int firstByte = Integer.parseInt(tok.nextToken()); int secondByte = Integer.parseInt(tok.nextToken()); if (firstByte == 10) { return true; } if (firstByte == 192 && secondByte == 168) { return true; } if (firstByte == 172 && secondByte >= 16 && secondByte <= 31) { return true; } if (firstByte == 127) { return true; } return false; } catch (Exception e) { return false; } } def found = false; for (def item : ctx.network.forwarded_ip) { if (!isPrivate(params.dot, item)) { ctx.source.ip = item; found = true; break; } } if (!found) { ctx.source.ip = ctx.network.forwarded_ip[0]; }",
"params": {
"dot": "."
}
}
},
{
"remove": {
"field": "message"
}
},
{
"rename": {
"field": "@timestamp",
"target_field": "read_timestamp"
}
},
{
"date": {
"field": "nginx.access.time",
"target_field": "@timestamp",
"formats": [
"dd/MMM/YYYY:H:m:s Z"
]
}
},
{
"remove": {
"field": "nginx.access.time"
}
},
{
"user_agent": {
"field": "nginx.access.agent"
}
},
{
"rename": {
"field": "nginx.access.agent",
"target_field": "user_agent.original"
}
},
{
"rename": {
"field": "user_agent.os",
"target_field": "user_agent.os.full_name",
"ignore_missing": true
}
},
{
"rename": {
"field": "user_agent.os_name",
"target_field": "user_agent.os.name",
"ignore_missing": true
}
},
{
"rename": {
"field": "user_agent.os_major",
"target_field": "user_agent.os.major",
"ignore_missing": true
}
},
{
"rename": {
"field": "user_agent.os_minor",
"target_field": "user_agent.os.minor",
"ignore_missing": true
}
},
{
"rename": {
"field": "user_agent.os_patch",
"target_field": "user_agent.os.patch",
"ignore_missing": true
}
},
{
"geoip": {
"field": "source.ip",
"target_field": "source.geo",
"ignore_missing": true
}
}
],
"on_failure": [
{
"set": {
"field": "error.message",
"value": "{{ _ingest.on_failure_message }}"
}
}
]
}
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