---
description: Pipeline for Zscaler NSS

processors:
  # ECS event.ingested
  - set:
        field: event.ingested
        value: '{{_ingest.timestamp}}'
  # User agent
  - user_agent:
        field: user_agent.original
        ignore_missing:
  # URL
  - uri_parts:
      field: url.original
      target_field: _temp_.url
      ignore_failure: true
      if: ctx?.url?.original != null
  - script:
      lang: painless
      description: Updates the URL ECS fields from the results of the URI parts processor to not overwrite the RSA mappings
      if: ctx?._temp_?.url != null
      source: |
        for (entry in ctx._temp_.url.entrySet()) {
          if (entry != null && entry.getValue() != null) {
            if(ctx.url[entry.getKey()] == null) {
              ctx.url[entry.getKey()] = entry.getValue();
            } else if (!ctx.url[entry.getKey()].contains(entry.getValue())) {
              ctx.url[entry.getKey()] = [ctx.url[entry.getKey()]];
              ctx.url[entry.getKey()].add(entry.getValue());
            }
          }
        }
  - remove:
      field: _temp_
      ignore_missing: true
  # IP Geolocation Lookup
  - geoip:
        field: source.ip
        target_field: source.geo
        ignore_missing: true
  - geoip:
        field: destination.ip
        target_field: destination.geo
        ignore_missing: true

  # IP Autonomous System (AS) Lookup
  - geoip:
        database_file: GeoLite2-ASN.mmdb
        field: source.ip
        target_field: source.as
        properties:
            - asn
            - organization_name
        ignore_missing: true
  - geoip:
        database_file: GeoLite2-ASN.mmdb
        field: destination.ip
        target_field: destination.as
        properties:
            - asn
            - organization_name
        ignore_missing: true
  - rename:
        field: source.as.asn
        target_field: source.as.number
        ignore_missing: true
  - rename:
        field: source.as.organization_name
        target_field: source.as.organization.name
        ignore_missing: true
  - rename:
        field: destination.as.asn
        target_field: destination.as.number
        ignore_missing: true
  - rename:
        field: destination.as.organization_name
        target_field: destination.as.organization.name
        ignore_missing: true
  - append:
        field: related.hosts
        value: '{{host.name}}'
        allow_duplicates: false
        if: ctx.host?.name != null && ctx.host?.name != ''
on_failure:
  - append:
        field: error.message
        value: "{{ _ingest.on_failure_message }}"