Difference between revisions of "WebDAV"

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[[Category:Networking]]
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[[Category:Network sharing]]
WebDAV stands for '''Web''' '''D'''istributed '''A'''uthoring and '''V'''ersionin, see [http://www.ietf.org/rfc/rfc2518.txt RFC 2518].
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[[ja:WebDAV]]
 
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WebDAV ('''Web''' '''D'''istributed '''A'''uthoring and '''V'''ersioning) is an extension of HTTP 1.1 and therefore can be considered to be a procotol. It contains a set of concepts and accompanying extension methods to allow read and write across the HTTP 1.1 protocol. Instead of using [[NFS]] or [[SMB]], WebDAV offers file transfers via HTTP.  
WebDAV is an extension of HTTP 1.1 and therefore can be considered to be a procotol. It contains a set of concepts and accompanying extension methods to allow read and write across the HTTP 1.1 protocol. Instead of using [[NFS]] or [[Samba|SMB]], WebDAV offers file transfers via HTTP.  
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The goal of this how to is to setup a simple WebDAV configuration using Apache.
 
The goal of this how to is to setup a simple WebDAV configuration using Apache.
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== Server (Apache) ==
 
== Server (Apache) ==
Install Apache as explained in the [[LAMP]] article.
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Install the [[Apache HTTP Server]].
  
Now enable WebDAV. Add the following line to {{ic|/etc/httpd/conf/httpd.conf}}.
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Now enable WebDAV. Uncomment the modules for DAV:
 +
{{bc|
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LoadModule dav_module modules/mod_dav.so
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LoadModule dav_fs_module modules/mod_dav_fs.so
 +
LoadModule dav_lock_module modules/mod_dav_lock.so
 +
}}
 +
 
 +
Add the following line to {{ic|/etc/httpd/conf/httpd.conf}}.
 
  DAVLockDB /home/httpd/DAV/DAVLock
 
  DAVLockDB /home/httpd/DAV/DAVLock
  
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Next, add the following (also outside of any directives):
 
Next, add the following (also outside of any directives):
 
{{bc|
 
{{bc|
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Alias /dav "/home/httpd/html/dav"
 +
 
<Directory "/home/httpd/html/dav">
 
<Directory "/home/httpd/html/dav">
 
   DAV On
 
   DAV On
 
   AllowOverride None
 
   AllowOverride None
 
   Options Indexes FollowSymLinks
 
   Options Indexes FollowSymLinks
   Order allow,deny
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   Require all granted
  Allow from all
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</Directory>
 
</Directory>
 
}}
 
}}
  
 
=== Create directories ===
 
=== Create directories ===
 +
 
  # mkdir -p /home/httpd/DAV
 
  # mkdir -p /home/httpd/DAV
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 +
Check the permissions of DavLockDB's directory and ensure it is writable by the apache user (http):
 
  # chown -R http:http /home/httpd/DAV # Otherwise you wouldn't be able to upload files
 
  # chown -R http:http /home/httpd/DAV # Otherwise you wouldn't be able to upload files
 +
 
  # mkdir -p /home/httpd/html/dav
 
  # mkdir -p /home/httpd/html/dav
  # chown -R nobody.nobody /home/httpd/html/dav
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  # chown -R http:http /home/httpd/html/dav
  
 
== Client (Cadaver) ==
 
== Client (Cadaver) ==
{{Pkg|cadaver}} is a command line WebDAV client.
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Cadaver is a command line WebDAV client. It can be installed with the package {{Pkg|cadaver}}, available in the [[official repositories]].
# pacman -S cadaver
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=== Test it ===
 
=== Test it ===
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   AllowOverride None
 
   AllowOverride None
 
   Options Indexes FollowSymLinks
 
   Options Indexes FollowSymLinks
  Order allow,deny
 
 
   AuthType Digest # substitute "Basic" for "Digest" if you used htpasswd above
 
   AuthType Digest # substitute "Basic" for "Digest" if you used htpasswd above
 
   AuthName "WebDAV"
 
   AuthName "WebDAV"
 
   AuthUserFile /etc/httpd/conf/passwd
 
   AuthUserFile /etc/httpd/conf/passwd
 
   Require user foo
 
   Require user foo
  Allow from all
 
 
</Directory>
 
</Directory>
 
}}
 
}}
Line 91: Line 99:
 
   AllowOverride None
 
   AllowOverride None
 
   Options Indexes FollowSymLinks
 
   Options Indexes FollowSymLinks
  Order allow,deny
 
 
   AuthType Digest # substitute "Basic" for "Digest" if you used htpasswd above
 
   AuthType Digest # substitute "Basic" for "Digest" if you used htpasswd above
 
   AuthName "WebDAV"
 
   AuthName "WebDAV"
 
   AuthUserFile /etc/httpd/conf/passwd
 
   AuthUserFile /etc/httpd/conf/passwd
   Allow from all
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   Require all granted
 
   <LimitExcept GET HEAD OPTIONS PROPFIND>
 
   <LimitExcept GET HEAD OPTIONS PROPFIND>
     require user foo
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     Require user foo
 
   </LimitExcept>
 
   </LimitExcept>
 
</Directory>
 
</Directory>
 
}}
 
}}
  
Don't forget to restart apache after making changes!
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Do not forget to restart apache after making changes!
 
  # systemctl restart httpd
 
  # systemctl restart httpd

Latest revision as of 11:40, 14 September 2016

WebDAV (Web Distributed Authoring and Versioning) is an extension of HTTP 1.1 and therefore can be considered to be a procotol. It contains a set of concepts and accompanying extension methods to allow read and write across the HTTP 1.1 protocol. Instead of using NFS or SMB, WebDAV offers file transfers via HTTP.

The goal of this how to is to setup a simple WebDAV configuration using Apache.

See also File Sharing with Webdav and DNSSD.

Server (Apache)

Install the Apache HTTP Server.

Now enable WebDAV. Uncomment the modules for DAV:

LoadModule dav_module modules/mod_dav.so
LoadModule dav_fs_module modules/mod_dav_fs.so
LoadModule dav_lock_module modules/mod_dav_lock.so

Add the following line to /etc/httpd/conf/httpd.conf.

DAVLockDB /home/httpd/DAV/DAVLock

Make sure you add it outside of any other directives, for instance right under the DocumentRoot definition.

Next, add the following (also outside of any directives):

Alias /dav "/home/httpd/html/dav"

<Directory "/home/httpd/html/dav">
  DAV On
  AllowOverride None
  Options Indexes FollowSymLinks
  Require all granted
</Directory>

Create directories

# mkdir -p /home/httpd/DAV

Check the permissions of DavLockDB's directory and ensure it is writable by the apache user (http):

# chown -R http:http /home/httpd/DAV # Otherwise you wouldn't be able to upload files
# mkdir -p /home/httpd/html/dav
# chown -R http:http /home/httpd/html/dav

Client (Cadaver)

Cadaver is a command line WebDAV client. It can be installed with the package cadaver, available in the official repositories.

Test it

# cadaver http://localhost/dav
dav:/dav/> mkcol test
Creating `test': succeeded.
dav:/dav/> ls
Listing collection `/dav/': succeeded.
Coll: test
dav:/dav/> exit

If the above worked as shown, then you are good to go.

Authentication

Make sure you add permissions for viewing and dav access to the directory, and maybe even make that directory ssl access only.

There are numerous different protocols you can use:

  • plain
  • digest
  • others

Two examples follow, in which foo is the username:

Using digest:

# basic form: htdigest -c /path/to/file AuthName username
htdigest -c /etc/httpd/conf/passwd WebDAV foo
Note: Make sure digest authentication is enabled in httpd.conf by the presence of this entry: LoadModule auth_digest_module modules/mod_auth_digest.so

Using plain:

# basic form: htpasswd -c /path/to/file username
htpasswd -c /etc/httpd/conf/passwd foo

Next, httpd.conf must be edited to enable authentication. One method would be to require the user foo for everything:

<Directory "/home/httpd/html/dav">
  DAV On
  AllowOverride None
  Options Indexes FollowSymLinks
  AuthType Digest # substitute "Basic" for "Digest" if you used htpasswd above
  AuthName "WebDAV"
  AuthUserFile /etc/httpd/conf/passwd
  Require user foo
</Directory>
Note: AuthName must match the name passed when using the htdigest command for digest authentication. For basic/plain authentication, this line may be removed. Also, make sure that the AuthUserFile path matches that used with the htdigest or htpasswd commands above

If you want to permit everybody to read, you could use this in your httpd.conf

<Directory "/home/httpd/html/dav">
  DAV On
  AllowOverride None
  Options Indexes FollowSymLinks
  AuthType Digest # substitute "Basic" for "Digest" if you used htpasswd above
  AuthName "WebDAV"
  AuthUserFile /etc/httpd/conf/passwd
  Require all granted
  <LimitExcept GET HEAD OPTIONS PROPFIND>
    Require user foo
  </LimitExcept>
</Directory>

Do not forget to restart apache after making changes!

# systemctl restart httpd