Item705: configure install fails if server webroot not writable

Server root directory was owned by root, not the server user.

Error: Failed to move file 'ToolTipPlugin_installer' to /var/www/foswiki100/ToolTipPlugin_installer: Permission denied

Configure should detect that root is not writable.

Also some sites run /tmp on a partition mounted noexec to block certain web attacks. configure should detect that /tmp is noexec. (Not sure if this is still an issue - but didn't want to loose the thought, so putting it here as it is somewhat related.

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This is mostly resolved for Foswiki 1.1. The rewritten Package installer no longer writes the _installer and archive files into the web server root. Also with reference to the noexec comment, the downloaded _installer file is not executed, so it can be stored on a noexec file system.

There is still a small opportunity for issues if an extension drops any files into the web server root. In response, I've added a check to the "Web Server Environment" section of bin/configure for 1.1. If the server root is not writable, a warning is placed into the DOCUMENT_ROOT section of the configuration.

-- GeorgeClark - 14 Jun 2010