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https://issues.apache.org/jira/browse/NUTCH-1995?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14547337#comment-14547337
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Sebastian Nagel commented on NUTCH-1995:
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Hi Guiseppe, wild cards are ok if it is about all hosts of a domain or the last
byte of an IP adress. But it should not be possible to bypass the robots.txt by
setting the white list to `*', cf. the initial discussion about NUTCH-1927
[[1|http://mail-archives.apache.org/mod_mbox/nutch-dev/201501.mbox/%3cd0ef8ff6.1df31a%[email protected]%3E]].
Users should be forced to include a domain name in the pattern, even patterns
such as *.com, *.co.uk are too unspecific. But comments are welcome regarding
this point!
Instead of iterating over a list of regular expressions
[o.a.n.util.SuffixStringMatcher|https://nutch.apache.org/apidocs/apidocs-1.10/org/apache/nutch/util/SuffixStringMatcher.html]
could be an efficient alternative.
> Add support for wildcard to http.robot.rules.whitelist
> ------------------------------------------------------
>
> Key: NUTCH-1995
> URL: https://issues.apache.org/jira/browse/NUTCH-1995
> Project: Nutch
> Issue Type: Improvement
> Components: robots
> Affects Versions: 1.10
> Reporter: Giuseppe Totaro
> Assignee: Chris A. Mattmann
> Labels: memex
> Fix For: 1.11
>
> Attachments: NUTCH-1995.patch
>
>
> The {{http.robot.rules.whitelist}}
> ([NUTCH-1927|https://issues.apache.org/jira/browse/NUTCH-1927]) configuration
> parameter allows to specify a comma separated list of hostnames or IP
> addresses to ignore robot rules parsing for.
> Adding support for wildcard in {{http.robot.rules.whitelist}} could be very
> useful and simplify the configuration, for example, if we need to give many
> hostnames/addresses. Here is an example:
> {noformat}
> <name>http.robot.rules.whitelist</name>
> <value>*.sample.com</value>
> <description>Comma separated list of hostnames or IP addresses to ignore
> robot rules parsing for. Use with care and only if you are explicitly
> allowed by the site owner to ignore the site's robots.txt!
> </description>
> </property>
> {noformat}
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