Apache Module mod_dav
This module provides class 1 and class 2 WebDAV ('Web-based Distributed Authoring and Versioning') functionality for Apache. This extension to the HTTP protocol allows creating, moving, copying, and deleting resources and collections on a remote web server.
This enables the DAV file system provider, which is implemented by the
module. Therefore, that module must be compiled into the server or loaded at runtime using the moddavfs
In addition, a location for the DAV lock database must be specified in the global section of your apache2.conf
DavLockDB /usr/local/apache2/var/DavLock
The directory containing the lock database file must be writable by the
under which Apache is running.Group
clause inside the
directive to limit access to
DAV-enabled locations. If you want to set the maximum amount of
bytes that a DAV client can send at one request, you have to use
the
directive. The "normal" LimitXMLRequestBody
directive has no effect on DAV requests.LimitRequestBody
DavLockDB /usr/local/apache2/var/DavLock
Any location on the server where DAV is enabled should be protected by authentication. The use of HTTP Basic Authentication is not recommended. You should use at least HTTP Digest Authentication, which is provided by the
module. Nearly all WebDAV clients support this authentication method. An alternative is Basic Authentication over an modauthdigestSSL enabled connection.
to manage files, it must be able to write to the directories and files under its control using the mod_dav
under which Apache is running. New files created will also be owned by this Group
. For this reason, it is important to control access to this account. The DAV repository is considered private to Apache; modifying files outside of Apache (for example using FTP or filesystem-level tools) should not be allowed.Group
may be subject to various kinds of denial-of-service attacks. The mod_dav
directive can be used to limit the amount of memory consumed in parsing large DAV requests. The LimitXMLRequestBody
directive can be used to prevent DavDepthInfinityPROPFIND
requests on a very large repository from consuming large amounts of memory. Another possible denial-of-service attack involves a client simply filling up all available disk space with many large files. There is no direct way to prevent this in Apache, so you should avoid giving DAV access to untrusted users.
request will always run the script, rather than downloading its contents. One way to avoid this is to map two different URLs to the content, one of which will run the script, and one of which will allow it to be downloaded and manipulated with DAV.
Alias /phparea /home/gstein/phpfiles Alias /php-source /home/gstein/phpfiles
Dav On|Off|provider-name
module. Note, that once you have DAV enabled for some location, it moddavfscannot be disabled for sublocations. For a complete configuration example have a look at the section above.
directive to specify, in seconds, the minimum lock timeout to return to a client. Microsoft Web Folders defaults to a timeout of 120 seconds; the DavMinTimeout
can override this to a higher value (like 600 seconds) to reduce the chance of the client losing the lock due to network latency.
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Apache HTTP Server Version 2.4
Apache Module mod_dav
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Enabling WebDAV
To enable mod_dav, add the following to a container in your apache2.conf file:
Security Issues
Since DAV access methods allow remote clients to manipulate files on the server, you must take particular care to assure that your server is secure before enabling mod_dav.
Complex Configurations
One common request is to use mod_dav to manipulate dynamic files (PHP scripts, CGI scripts, etc). This is difficult because a GET request will always run the script, rather than downloading its contents. One way to avoid this is to map two different URLs to the content, one of which will run the scr
Dav Directive
Use the Dav directive to enable the WebDAV HTTP methods for the given container:
DavDepthInfinity Directive
Use the DavDepthInfinity directive to allow the processing of PROPFIND requests containing the header 'Depth: Infinity'. Because this type of request could constitute a denial-of-service attack, by default it is not allowed.
DavMinTimeout Directive
When a client requests a DAV resource lock, it can also specify a time when the lock will be automatically removed by the server. This value is only a request, and the server can ignore it or inform the client of an arbitrary value.