The WARC Ecosystem

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Everything about the WARC format and the tools that support it.

Contents

Information

Tools

name

 1 license
 2 programming language
 3 test suite
 4 has documentation
 5 # of authors
 6 description

wget v1.14+

  • GPL v3+
  • C
  • Has a test suite but does not test any warc functionality
  • Man pages, website, blog posts all over the net
  • 2+ according to the changelog
  • A non-interactive network downloader. wget also generates duplicate record ids in warc files.

More information about flags can be found on the Wget with WARC output page.

InternetArchive's warc python library

WarcMiddleware

  • ISC
  • Python
  • Not enough tests
  • A readme file + Scrapy docs
  • 1 author
  • Mirrors websites and saves the results to a WARC file

WarcProxy

  • ISC
  • Python
  • NO TEST SUITE
  • A readme file
  • 1 author
  • a simple HTTP proxy that saves all HTTP traffic to a file

WarcMITMProxy

  • ISC
  • Python
  • NO TEST SUITE
  • A readme file
  • 1 author
  • HTTPS proxy that saves traffic to a WARC file

warc-tools

  • MIT License
  • python 2.6
  • NO TEST SUITE
  • A readme file
  • 4 commiters
  • warc validator, dump, search, index, convert arc to warc

The previous versions can be found at https://code.google.com/p/warc-tools/ and http://code.hanzoarchives.com/warc-tools .

old: http://code.hanzoarchives.com/warc-tools/src/6e1d36297688/hanzo/warcextract.py
new (untested): http://code.hanzoarchives.com/warc-tools/src/fd3b49a7ee22fe4eee0d51dc841af40d4b9d2e1e/warcunpack_ia.py?at=default

WARC viewer

  • no license information
  • python
  • NO TEST SUITE
  • A readme file
  • 1 author
  • WARC viewer for browsing the contents of a WARC file.

Megawarc

  • no license information
  • python
  • NO TEST SUITE
  • A readme file
  • 1 author
  • Merge many small warcs into a large one

Checks if WARC files can be un-gzipped before adding them to the megawarc. Does not check anything else.

warc to zip

  • no license information
  • python
  • NO TEST SUITE
  • A readme file
  • 1 author
  • An HTTP-based warc-to-zip converter

warcat

  • GPL v3
  • Python 3
  • yes
  • A readme file.
  • 1 author
  • warcat concat, extract, list, pass, split, verify warc files

Install: pip-3 install warcat
Run: python3 -m warcat verify mysite.warc.gz

https://github.com/internetarchive/ia-web-commons

https://github.com/internetarchive/ia-hadoop-tools

Archive Team megawarc factory

  • no license information
  • Bash shell scripting
  • NO TEST SUITE
  • A readme file.
  • 1 author
  • Generates 50gb warc files from existing warc files

Uploads to archive.org

CDX Writer

  • no license information
  • python
  • Has a test suite
  • A readme file.
  • 1 author
  • Create CDX index files from WARC files.

Heritrix

  • Apache v2.0
  • java
  • Has a test suite
  • javadoc, website
  • many authors
  • Heritrix is the Internet Archive's open-source, extensible, web-scale, archival-quality web crawler project.

Heritrix-Cassandra A library for writing Heritrix 3 output directly to Cassandra as records.

DeDuplicator (Heritrix add-on) The DeDuplicator is an add-on module (plug-in) for the web crawler Heritrix. It offers a means to reduce the amount of duplicate data collected in a series of snapshot crawls.

python-heritrix A simple wrapper around the Heritrix 3.x API. Developed in April 2012 against Heritrix 3.1.0 at GWU Libraries in Washington, DC, USA.

Chrome/Chromium plugin WARCreate

  • GPL v3
  • javascript
  •  ???
  • none
  • 1 author
  • WARCreate is a Google Chrome extension that allows a user to create a Web ARChive (WARC) file from any browseable webpage.

code repo

Java Web Archive Toolkit

  • Apache 2.0
  • Java
  • Partial Test Suite (check coverage profile)
  • Online
  • 1 author
  • jwattools arc2warc, cdx, compress, decompress, extract, interval, pathindex, test, unpack

code repo

WAIL

  • CC-BY-SA
  • Python, JS
  •  ???
  • Online
  • 1
  • Web Archiving Integration Layer (WAIL) is a graphical user interface (GUI) atop multiple web archiving tools intended to be used as an easy way for anyone to preserve and replay web pages.

Tools included and accessible through the GUI are Heritrix 3.1.2, Wayback 1.7, and warc-proxy. Support packages include Apache Tomcat, phantomjs and pyinstaller.

code repo

pylibwarc

  • ISC License
  • Python
  • CDX support
  • 1 author

Written by odie5533 which frequents #archiveteam, as another independant WARC library for Python.

Wpull

  • GPL version 3
  • Python 3
  • many unit tests (Travis CI registered), simple experimental fuzzer
  • a quick start readme, brief usage overview, good docstrings coverage
  • 1 core author
  • Wget-compatible web downloader.

Beta quality. Lua/Python scripting. PhantomJS (experimental). Used by ArchiveBot.

pywb

  • GPL version 3
  • Python 2
  • yes
  • readme and wiki
  • 1 core author
  • A full-fledged Python reimplementation of Wayback Machine web archive replay capabilities. Also provides a live rewriting proxy.

pywb-webrecorder

  • MIT
  • Python 2
  • no
  • readme
  • 1 core author
  • An experimental/demo integration of pywb + warcprox to allow live recording to WARC. Allows instant replay of recorded content from WARC.

webarchiveplayer

  • GPL version 3
  • Python 2
  • not yet, though most testable functionality in pywb
  • readme
  • 1 core author
  • Point-and-click wrapper for Windows and OS X for browsing WARC files. Shows a basic file open dialog to select a WARC(s), then

starts a server and opens a browser. Also determines HTML pages within a WARC. Built on top of pywb. In beta at the moment (early 2015).


Deprecated

The WARC format

  • A .warc file is usually a group of one or more WARC records.
  • The first record usually describes the records to follow.
  • compression is optional
  • each record is compressed via gzip. A gzip file supports multiple "members"
  • compressed warcs end in .warc.gz
  • According to the guidelines warc files should top out at 1gb


WARC record

  • header
  • content block
  • two newlines

WARC record header

The beginning of a WARC record, consisting of one first line declaring the record to be in the WARC format with a given version number, followed by lines of named fields up to a blank line. The WARC record header format largely follows the tradition of HTTP/1.1 [RFC2616] and [RFC2822] headers, with one major exception, allowing UTF-8 [RFC3629].


Example of a 'request' record header:

 WARC/1.0
 WARC-Type: request
 WARC-Target-URI: http://xbox.gamespy.com/
 Content-Type: application/http;msgtype=request
 WARC-Date: 2013-04-02T16:12:40Z
 WARC-Record-ID: <urn:uuid:08d9edb9-0ab8-4352-ba56-6cbbd590f34f>
 WARC-IP-Address: 213.248.112.146
 WARC-Warcinfo-ID: <urn:uuid:2b6ad3f1-efab-4e37-8faa-fc8ad112692f>
 WARC-Block-Digest: sha1:T6PJSZTTP7HBNA6OFZACXAFK25GGLVT4
 Content-Length: 150

WARC named fields

  • A set of elements consisting of a name, a colon, and a value, with long values continued on indented lines.
  • Named fields may appear in any order.
  • Field values may contain any UTF-8 character.
  • The 'encoded-word' mechanism of [RFC2047] may also be used when writing WARC fields and shall also be understood by WARC reading software.

WARC content block

Part (zero or more octets) of a WARC record that follows the header and that forms the main body of a WARC record.


CDX File Format


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