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Deprecation Notice

This project has been moved to https://github.com/ajilach/clamav-rest. Please follow that one instead as this one here will get deleted soon.

Table of Contents

Introduction

This is two in one docker image so it runs open source virus scanner ClamAV (https://www.clamav.net/), automatic virus definition updates as background process and REST API interface to interact with ClamAV process.

Prerequisites

This container doesn't do much on it's own unless you use an additional service or communicator to talk to it!

Installation

Automated builds of the image are available on Registry and is the recommended method of installation.

docker pull hub.docker.com/ajilaag/clamav-rest:(imagetag)

The following image tags are available:

  • latest - Most recent release of ClamAV with REST API

Quick Start

Run clamav-rest docker image:

docker run -p 9000:9000 -p 9443:9443 -itd --name clamav-rest ajilaag/clamav-rest

Test that service detects common test virus signature:

HTTP

$ curl -i -F "file=@eicar.com.txt" http://localhost:9000/scan
HTTP/1.1 100 Continue

HTTP/1.1 406 Not Acceptable
Content-Type: application/json; charset=utf-8
Date: Mon, 28 Aug 2017 20:22:34 GMT
Content-Length: 56

{ Status: "FOUND", Description: "Eicar-Test-Signature" }

HTTPS

$ curl -i -k -F "file=@eicar.com.txt" https://localhost:9443/scan
HTTP/1.1 100 Continue

HTTP/1.1 406 Not Acceptable
Content-Type: application/json; charset=utf-8
Date: Mon, 28 Aug 2017 20:22:34 GMT
Content-Length: 56

{ Status: "FOUND", Description: "Eicar-Test-Signature" }

Test that service returns 200 for clean file:

HTTP

$ curl -i -F "file=@clamrest.go" http://localhost:9000/scan

HTTP/1.1 100 Continue

HTTP/1.1 200 OK
Content-Type: application/json; charset=utf-8
Date: Mon, 28 Aug 2017 20:23:16 GMT
Content-Length: 33

{ Status: "OK", Description: "" }

HTTPS

$ curl -i -k -F "file=@clamrest.go" https://localhost:9443/scan

HTTP/1.1 100 Continue

HTTP/1.1 200 OK
Content-Type: application/json; charset=utf-8
Date: Mon, 28 Aug 2017 20:23:16 GMT
Content-Length: 33

{ Status: "OK", Description: "" }

Status Codes

  • 200 - clean file = no KNOWN infections
  • 400 - ClamAV returned general error for file
  • 406 - INFECTED
  • 412 - unable to parse file
  • 501 - unknown request

Configuration

Environment Variables

Below is the complete list of available options that can be used to customize your installation.

Parameter Description
MAX_SCAN_SIZE Amount of data scanned for each file - Default 100M
MAX_FILE_SIZE Don't scan files larger than this size - Default 25M
MAX_RECURSION How many nested archives to scan - Default 16
MAX_FILES Number of files to scan withn archive - Default 10000
MAX_EMBEDDEDPE Maximum file size for embedded PE - Default 10M
MAX_HTMLNORMALIZE Maximum size of HTML to normalize - Default 10M
MAX_HTMLNOTAGS Maximum size of Normlized HTML File to scan- Default 2M
MAX_SCRIPTNORMALIZE Maximum size of a Script to normalize - Default 5M
MAX_ZIPTYPERCG Maximum size of ZIP to reanalyze type recognition - Default 1M
MAX_PARTITIONS How many partitions per Raw disk to scan - Default 50
MAX_ICONSPE How many Icons in PE to scan - Default 100
PCRE_MATCHLIMIT Maximum PCRE Match Calls - Default 100000
PCRE_RECMATCHLIMIT Maximum Recursive Match Calls to PCRE - Default 2000
SIGNATURE_CHECKS Check times per day for a new database signature. Must be between 1 and 50. - Default 24

Networking

Port Description
3310 ClamD Listening Port

Maintenance / Monitoring

Shell Access

For debugging and maintenance purposes you may want access the containers shell.

docker exec -it (whatever your container name is e.g. clamav-rest) /bin/sh

Prometheus

Prometheus metrics were implemented, which can be retrieved as follows

HTTP: curl http://localhost:9000/metrics

HTTPS: curl https://localhost:9443/metrics

Developing

Build golang (linux) binary and docker image:

# env GOOS=linux GOARCH=amd64 go build
docker build . -t clamav-go-rest
docker run -p 9000:9000 -p 9443:9443 -itd --name clamav-rest clamav-go-rest

References

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ClamAV virus scanner with REST API Docker image

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