Provided by: libhttp-dav-perl_0.48-1_all 
NAME
HTTP::DAV - A WebDAV client library for Perl5
SYNOPSIS
# DAV script that connects to a webserver, safely makes
# a new directory and uploads all html files in
# the /tmp directory.
use HTTP::DAV;
$d = HTTP::DAV->new();
$url = "http://host.org:8080/dav/";
$d->credentials(
-user => "pcollins",
-pass => "mypass",
-url => $url,
-realm => "DAV Realm"
);
$d->open( -url => $url )
or die("Couldn't open $url: " .$d->message . "\n");
# Make a null lock on newdir
$d->lock( -url => "$url/newdir", -timeout => "10m" )
or die "Won't put unless I can lock for 10 minutes\n";
# Make a new directory
$d->mkcol( -url => "$url/newdir" )
or die "Couldn't make newdir at $url\n";
# Upload multiple files to newdir.
if ( $d->put( -local => "/tmp/*.html", -url => $url ) ) {
print "successfully uploaded multiple files to $url\n";
} else {
print "put failed: " . $d->message . "\n";
}
$d->unlock( -url => $url );
DESCRIPTION
HTTP::DAV is a Perl API for interacting with and modifying content on webservers using the
WebDAV protocol. Now you can LOCK, DELETE and PUT files and much more on a DAV-enabled
webserver.
HTTP::DAV is part of the PerlDAV project hosted at http://www.webdav.org/perldav/ and has
the following features:
• Full RFC2518 method support. OPTIONS, TRACE, GET, HEAD, DELETE, PUT, COPY, MOVE,
PROPFIND, PROPPATCH, LOCK, UNLOCK.
• A fully object-oriented API.
• Recursive GET and PUT for site backups and other scripted transfers.
• Transparent lock handling when performing LOCK/COPY/UNLOCK sequences.
• http and https support (https requires the Crypt::SSLeay library). See INSTALLATION.
• Basic AND Digest authentication support (Digest auth requires the MD5 library). See
INSTALLATION.
• "dave", a fully-functional ftp-style interface written on top of the HTTP::DAV API and
bundled by default with the HTTP::DAV library. (If you've already installed HTTP::DAV,
then dave will also have been installed (probably into /usr/local/bin). You can see
it's man page by typing "perldoc dave" or going to
http://www.webdav.org/perldav/dave/.
• It is built on top of the popular LWP (Library for WWW access in Perl). This means
that HTTP::DAV inherits proxy support, redirect handling, basic (and digest)
authorization and many other HTTP operations. See "LWP" for more information.
• Popular server support. HTTP::DAV has been tested against the following servers:
mod_dav, IIS5, Xythos webfile server and mydocsonline. The library is growing an
impressive interoperability suite which also serves as useful "sample scripts". See
"make test" and t/*.
"HTTP::DAV" essentially has two API's, one which is accessed through this module directly
(HTTP::DAV) and is a simple abstraction to the rest of the HTTP::DAV::* Classes. The other
interface consists of the HTTP::DAV::* classes which if required allow you to get "down
and dirty" with your DAV and HTTP interactions.
The methods provided in "HTTP::DAV" should do most of what you want. If, however, you need
more control over the client's operations or need more info about the server's responses
then you will need to understand the rest of the HTTP::DAV::* interfaces. A good place to
start is with the "HTTP::DAV::Resource" and "HTTP::DAV::Response" documentation.
METHODS
METHOD CALLING: Named vs Unnamed parameters
You can pass parameters to "HTTP::DAV" methods in one of two ways: named or unnamed.
Named parameters provides for a simpler/easier to use interface. A named interface affords
more readability and allows the developer to ignore a specific order on the parameters.
(named parameters are also case insensitive)
Each argument name is preceded by a dash. Neither case nor order matters in the argument
list. -url, -Url, and -URL are all acceptable. In fact, only the first argument needs to
begin with a dash. If a dash is present in the first argument, "HTTP::DAV" assumes dashes
for the subsequent ones.
Each method can also be called with unnamed parameters which often makes sense for methods
with only one parameter. But the developer will need to ensure that the parameters are
passed in the correct order (as listed in the docs).
Doc: method( -url=>$url, [-depth=>$depth] )
Named: $d->method( -url=>$url, -depth=>$d ); # VALID
Named: $d->method( -Depth=>$d, -Url=>$url ); # VALID
Named: $d->method( Depth=>$d, Url=>$url ); # INVALID (needs -)
Named: $d->method( -Arg2=>$val2 ); # INVALID, ARG1 is not optional
Unnamed: $d->method( $val1 ); # VALID
Unnamed: $d->method( $val2,$val1 ); # INVALID, ARG1 must come first.
IMPORTANT POINT!!!! If you specify a named parameter first but then forget for the second
and third parameters, you WILL get weird things happen. E.g. this is bad:
$d->method( -url=>$url, $arg2, $arg3 ); # BAD BAD BAD
THINGS YOU NEED TO KNOW
In all of the methods specified in "PUBLIC METHODS" there are some common concepts you'll
need to understand:
• URLs represent an absolute or relative URI.
-url=>"host.org/dav_dir/" # Absolute
-url=>"/dav_dir/" # Relative
-url=>"file.txt" # Relative
You can only use a relative URL if you have already "open"ed an absolute URL.
The HTTP::DAV module now consistently uses the named parameter: URL. The lower-level
HTTP::DAV::Resource interface inconsistently interchanges URL and URI. I'm working to
resolve this, in the meantime, you'll just need to remember to use the right one by
checking the documentation if you need to mix up your use of both interfaces.
• GLOBS
Some methods accept wildcards in the URL. A wildcard can be used to indicate that the
command should perform the command on all Resources that match the wildcard. These
wildcards are called GLOBS.
The glob may contain the characters "*", "?" and the set operator "[...]" where ...
contains multiple characters ([1t2]) or a range such ([1-5]). For the curious, the
glob is converted to a regex and then matched: "*" to ".*", "?" to ".", and the [] is
left untouched.
It is important to note that globs only operate at the leaf-level. For instance
"/my_dir/*/file.txt" is not a valid glob.
If a glob matches no URL's the command will fail (which normally means returns 0).
Globs are useful in conjunction with CALLBACKS to provide feedback as each operation
completes.
See the documentation for each method to determine whether it supports globbing.
Globs are useful for interactive style applications (see the source code for "dave" as
an example).
Example globs:
$dav1->delete(-url=>"/my_dir/file[1-3]"); # Matches file1, file2, file3
$dav1->delete(-url=>"/my_dir/file[1-3]*.txt");# Matches file1*.txt,file2*.txt,file3*.txt
$dav1->delete(-url=>"/my_dir/*/file.txt"); # Invalid. Can only match at leaf-level
• CALLBACKS
Callbacks are used by some methods (primarily get and put) to give the caller some
insight as to how the operation is progressing. A callback allows you to define a
subroutine as defined below and pass a reference (\&ref) to the method.
The rationale behind the callback is that a recursive get/put or an operation against
many files (using a "glob") can actually take a long time to complete.
Example callback:
$d->get( -url=>$url, -to=>$to, -callback=>\&mycallback );
Your callback function MUST accept arguments as follows:
sub cat_callback {
my($status,$mesg,$url,$so_far,$length,$data) = @_;
...
}
The "status" argument specifies whether the operation has succeeded (1), failed (0),
or is in progress (-1).
The "mesg" argument is a status message. The status message could contain any string
and often contains useful error messages or success messages.
The "url" the remote URL.
The "so_far", "length" - these parameters indicate how many bytes have been downloaded
and how many we should expect. This is useful for doing "56% to go" style-gauges.
The "data" parameter - is the actual data transferred. The "cat" command uses this to
print the data to the screen. This value will be empty for "put".
See the source code of "dave" for a useful sample of how to setup a callback.
Note that these arguments are NOT named parameters.
All error messages set during a "multi-operation" request (for instance a recursive
get/put) are also retrievable via the "errors()" function once the operation has
completed. See "ERROR HANDLING" for more information.
PUBLIC METHODS
new(USERAGENT)
new(USERAGENT, HEADERS)
Creates a new "HTTP::DAV" client
$d = HTTP::DAV->new();
The "-useragent" parameter allows you to pass your own user agent object and expects
an "HTTP::DAV::UserAgent" object. See the "dave" program for an advanced example of a
custom UserAgent that interactively prompts the user for their username and password.
The "-headers" parameter allows you to specify a list of headers to be sent along with
all requests. This can be either a hashref like:
{ "X-My-Header" => "value", ... }
or a HTTP::Headers object.
credentials(USER,PASS,[URL],[REALM])
sets authorization credentials for a "URL" and/or "REALM".
When the client hits a protected resource it will check these credentials to see if
either the "URL" or "REALM" match the authorization response.
Either "URL" or "REALM" must be provided.
returns no value
Example:
$d->credentials( -url=>'myhost.org:8080/test/',
-user=>'pcollins',
-pass=>'mypass');
DebugLevel($val)
sets the debug level to $val. 0=off 3=noisy.
$val default is 0.
returns no value.
When the value is greater than 1, the "HTTP::DAV::Comms" module will log all of the
client<=>server interactions into /tmp/perldav_debug.txt.
DAV OPERATIONS
For all of the following operations, URL can be absolute (http://host.org/dav/) or
relative (../dir2/). The only operation that requires an absolute URL is open.
copy(URL,DEST,[OVERWRITE],[DEPTH])
copies one remote resource to another
"-url"
is the remote resource you'd like to copy. Mandatory
"-dest"
is the remote target for the copy command. Mandatory
"-overwrite"
optionally indicates whether the server should fail if the target exists. Valid
values are "T" and "F" (1 and 0 are synonymous). Default is T.
"-depth"
optionally indicates whether the server should do a recursive copy or not. Valid
values are 0 and (1 or "infinity"). Default is "infinity" (1).
The return value is always 1 or 0 indicating success or failure.
Requires a working resource to be set before being called. See "open".
Note: if either 'URL' or 'DEST' are locked by this dav client, then the lock headers
will be taken care of automatically. If the either of the two URL's are locked by
someone else, the server should reject the request.
copy examples:
$d->open(-url=>"host.org/dav_dir/");
Recursively copy dir1/ to dir2/
$d->copy(-url=>"dir1/", -dest=>"dir2/");
Non-recursively and non-forcefully copy dir1/ to dir2/
$d->copy(-url=>"dir1/", -dest=>"dir2/",-overwrite=>0,-depth=>0);
Create a copy of dir1/file.txt as dir2/file.txt
$d->cwd(-url=>"dir1/");
$d->copy("file.txt","../dir2");
Create a copy of file.txt as dir2/new_file.txt
$d->copy("file.txt","/dav_dir/dir2/new_file.txt")
cwd(URL)
changes the remote working directory.
This is synonymous to open except that the URL can be relative and may contain a
"glob" (the first match in a glob will be used).
$d->open("host.org/dav_dir/dir1/");
$d->cwd("../dir2");
$d->cwd(-url=>"../dir1");
The return value is always 1 or 0 indicating success or failure.
Requires a working resource to be set before being called. See "open".
You can not cwd to files, only collections (directories).
delete(URL)
deletes a remote resource.
$d->open("host.org/dav_dir/");
$d->delete("index.html");
$d->delete("./dir1");
$d->delete(-url=>"/dav_dir/dir2/file*",-callback=>\&mycallback);
"-url"
is the remote resource(s) you'd like to delete. It can be a file, directory or "glob".
"-callback"
is a reference to a callback function which will be called everytime a file is deleted.
This is mainly useful when used in conjunction with GLOBS deletes. See callbacks
The return value is always 1 or 0 indicating success or failure.
Requires a working resource to be set before being called. See "open".
This command will recursively delete directories. BE CAREFUL of uninitialised file
variables in situation like this: $d->delete("$dir/$file"). This will trash your $dir
if $file is not set.
get(URL,[TO],[CALLBACK])
downloads the file or directory at "URL" to the local location indicated by "TO".
"-url"
is the remote resource you'd like to get. It can be a file or directory or a
"glob".
"-to"
is where you'd like to put the remote resource. The -to parameter can be:
- a B<filename> indicating where to save the contents.
- a B<FileHandle reference>.
- a reference to a B<scalar object> into which the contents will be saved.
If the "-url" matches multiple files (via a glob or a directory download), then
the "get" routine will return an error if you try to use a FileHandle reference or
a scalar reference.
"-callback"
is a reference to a callback function which will be called everytime a file is
completed downloading. The idea of the callback function is that some recursive
get's can take a very long time and the user may require some visual feedback. See
CALLBACKS for an examples and how to use a callback.
The return value of get is always 1 or 0 indicating whether the entire get sequence
was a success or if there was ANY failures. For instance, in a recursive get, if the
server couldn't open 1 of the 10 remote files, for whatever reason, then the return
value will be 0. This is so that you can have your script call the "errors()" routine
to handle error conditions.
Previous versions of HTTP::DAV allowed the return value to be the file contents if no
-to attribute was supplied. This functionality is deprecated.
Requires a working resource to be set before being called. See "open".
get examples:
$d->open("host.org/dav_dir/");
Recursively get remote my_dir/ to .
$d->get("my_dir/",".");
Recursively get remote my_dir/ to /tmp/my_dir/ calling &mycallback($success,$mesg)
everytime a file operation is completed.
$d->get("my_dir","/tmp",\&mycallback);
Get remote my_dir/index.html to /tmp/index.html
$d->get(-url=>"/dav_dir/my_dir/index.html",-to=>"/tmp");
Get remote index.html to /tmp/index1.html
$d->get("index.html","/tmp/index1.html");
Get remote index.html to a filehandle
my $fh = new FileHandle;
$fh->open(">/tmp/index1.html");
$d->get("index.html",\$fh);
Get remote index.html as a scalar (into the string $file_contents):
my $file_contents;
$d->get("index.html",\$file_contents);
Get all of the files matching the globs file1* and file2*:
$d->get("file[12]*","/tmp");
Get all of the files matching the glob file?.html:
$d->get("file?.html","/tmp"); # downloads file1.html and file2.html but not file3.html or file1.txt
Invalid glob:
$d->get("/dav_dir/*/index.html","/tmp"); # Can not glob like this.
lock([URL],[OWNER],[DEPTH],[TIMEOUT],[SCOPE],[TYPE])
locks a resource. If URL is not specified, it will lock the current working resource
(opened resource).
$d->lock( -url => "index.html",
-owner => "Patrick Collins",
-depth => "infinity",
-scope => "exclusive",
-type => "write",
-timeout => "10h" )
See "HTTP::DAV::Resource" lock() for details of the above parameters.
The return value is always 1 or 0 indicating success or failure.
Requires a working resource to be set before being called. See "open".
When you lock a resource, the lock is held against the current HTTP::DAV object. In
fact, the locks are held in a "HTTP::DAV::ResourceList" object. You can operate
against all of the locks that you have created as follows:
## Print and unlock all locks that we own.
my $rl_obj = $d->get_lockedresourcelist();
foreach $resource ( $rl_obj->get_resources() ) {
@locks = $resource->get_locks(-owned=>1);
foreach $lock ( @locks ) {
print $resource->get_uri . "\n";
print $lock->as_string . "\n";
}
## Unlock them?
$resource->unlock;
}
Typically, a simple $d->unlock($uri) will suffice.
lock example
$d->lock($uri, -timeout=>"1d");
...
$d->put("/tmp/index.html",$uri);
$d->unlock($uri);
mkcol(URL)
make a remote collection (directory)
The return value is always 1 or 0 indicating success or failure.
Requires a working resource to be set before being called. See "open".
$d->open("host.org/dav_dir/");
$d->mkcol("new_dir"); # Should succeed
$d->mkcol("/dav_dir/new_dir"); # Should succeed
$d->mkcol("/dav_dir/new_dir/xxx/yyy"); # Should fail
move(URL,DEST,[OVERWRITE],[DEPTH])
moves one remote resource to another
"-url"
is the remote resource you'd like to move. Mandatory
"-dest"
is the remote target for the move command. Mandatory
"-overwrite"
optionally indicates whether the server should fail if the target exists. Valid
values are "T" and "F" (1 and 0 are synonymous). Default is T.
Requires a working resource to be set before being called. See "open".
The return value is always 1 or 0 indicating success or failure.
Note: if either 'URL' or 'DEST' are locked by this dav client, then the lock headers
will be taken care of automatically. If either of the two URL's are locked by someone
else, the server should reject the request.
move examples:
$d->open(-url=>"host.org/dav_dir/");
move dir1/ to dir2/
$d->move(-url=>"dir1/", -dest=>"dir2/");
non-forcefully move dir1/ to dir2/
$d->move(-url=>"dir1/", -dest=>"dir2/",-overwrite=>0);
Move dir1/file.txt to dir2/file.txt
$d->cwd(-url=>"dir1/");
$d->move("file.txt","../dir2");
move file.txt to dir2/new_file.txt
$d->move("file.txt","/dav_dir/dir2/new_file.txt")
open(URL)
opens the directory (collection resource) at URL.
open will perform a propfind against URL. If the server does not understand the
request then the open will fail.
Similarly, if the server indicates that the resource at URL is NOT a collection, the
open command will fail.
options([URL])
Performs an OPTIONS request against the URL or the working resource if URL is not
supplied.
Requires a working resource to be set before being called. See "open".
The return value is a string of comma separated OPTIONS that the server states are
legal for URL or undef otherwise.
A fully compliant DAV server may offer as many methods as: OPTIONS, TRACE, GET, HEAD,
DELETE, PUT, COPY, MOVE, PROPFIND, PROPPATCH, LOCK, UNLOCK
Note: IIS5 does not support PROPPATCH or LOCK on collections.
Example:
$options = $d->options($url);
print $options . "\n";
if ($options=~ /\bPROPPATCH\b/) {
print "OK to proppatch\n";
}
Or, put more simply:
if ( $d->options($url) =~ /\bPROPPATCH\b/ ) {
print "OK to proppatch\n";
}
propfind([URL],[DEPTH])
Perform a propfind against URL at DEPTH depth.
"-depth" can be used to specify how deep the propfind goes. "0" is collection only.
"1" is collection and it's immediate members (This is the default value). "infinity"
is the entire directory tree. Note that most DAV compliant servers deny "infinity"
depth propfinds for security reasons.
Requires a working resource to be set before being called. See "open".
The return value is an "HTTP::DAV::Resource" object on success or 0 on failure.
The Resource object can be used for interrogating properties or performing other
operations.
## Print collection or content length
if ( $r=$d->propfind( -url=>"/my_dir", -depth=>1) ) {
if ( $r->is_collection ) {
print "Collection\n"
print $r->get_resourcelist->as_string . "\n"
} else {
print $r->get_property("getcontentlength") ."\n";
}
}
Please note that although you may set a different namespace for a property of a
resource during a set_prop, HTTP::DAV currently ignores all XML namespaces so you will
get clashes if two properties have the same name but in different namespaces.
Currently this is unavoidable but I'm working on the solution.
proppatch([URL],[NAMESPACE],PROPNAME,PROPVALUE,ACTION,[NSABBR])
If "-action" equals "set" then we set a property named "-propname" to "-propvalue" in
the namespace "-namespace" for "-url".
If "-action" equals "remove" then we unset a property named "-propname" in the
namespace "-namespace" for "-url".
If no action is supplied then the default action is "set".
The return value is an "HTTP::DAV::Resource" object on success or 0 on failure.
The Resource object can be used for interrogating properties or performing other
operations.
To explicitly set a namespace in which to set the propname then you can use the
"-namespace" and "-nsabbr" (namespace abbreviation) parameters. But you're welcome to
play around with DAV namespaces.
Requires a working resource to be set before being called. See "open".
It is recommended that you use "set_prop" and "unset_prop" instead of proppatch for
readability.
"set_prop" simply calls "proppatch(-action="set)> and "unset_prop" calls
"proppatch(-action=""remove")>
See "set_prop" and "unset_prop" for examples.
put(LOCAL,[URL],[CALLBACK],[HEADERS])
uploads the files or directories at "-local" to the remote destination at "-url".
"-local" points to a file, directory or series of files or directories (indicated by a
glob).
If the filename contains any of the characters `*', `?' or `[' it is a candidate
for filename substitution, also known as ``globbing''. This word is then
regarded as a pattern (``glob-pattern''), and replaced with an alphabetically sorted
list of file names which match the pattern.
One can upload/put a string by passing a reference to a scalar in the -local
parameter. See example below.
put requires a working resource to be set before being called. See "open".
The return value is always 1 or 0 indicating success or failure.
See get() for a description of what the optional callback parameter does.
You can also pass a "-headers" argument. That allows one to specify custom HTTP
headers. It can be either a hashref with header names and values, or a HTTP::Headers
object.
put examples:
Put a string to the server:
my $myfile = "This is the contents of a file to be uploaded\n";
$d->put(-local=>\$myfile,-url=>"http://www.host.org/dav_dir/file.txt");
Put a local file to the server:
$d->put(-local=>"/tmp/index.html",-url=>"http://www.host.org/dav_dir/");
Put a series of local files to the server:
In these examples, /tmp contains file1.html, file1, file2.html,
file2.txt, file3.html, file2/
$d->put(-local=>"/tmp/file[12]*",-url=>"http://www.host.org/dav_dir/");
uploads file1.html, file1, file2.html, file2.txt and the directory file2/ to dav_dir/.
set_prop([URL],[NAMESPACE],PROPNAME,PROPVALUE)
Sets a property named "-propname" to "-propvalue" in the namespace "-namespace" for
"-url".
Requires a working resource to be set before being called. See "open".
The return value is an "HTTP::DAV::Resource" object on success or 0 on failure.
The Resource object can be used for interrogating properties or performing other
operations.
Example:
if ( $r = $d->set_prop(-url=>$url,
-namespace=>"dave",
-propname=>"author",
-propvalue=>"Patrick Collins"
) ) {
print "Author property set\n";
} else {
print "set_prop failed:" . $d->message . "\n";
}
See the note in propfind about namespace support in HTTP::DAV. They're settable, but
not readable.
steal([URL])
forcefully steals any locks held against URL.
steal will perform a propfind against URL and then, any locks that are found will be
unlocked one by one regardless of whether we own them or not.
Requires a working resource to be set before being called. See "open".
The return value is always 1 or 0 indicating success or failure. If multiple locks are
found and unlocking one of them fails then the operation will be aborted.
if ($d->steal()) {
print "Steal succeeded\n";
} else {
print "Steal failed: ". $d->message() . "\n";
}
unlock([URL])
unlocks any of our locks on URL.
Requires a working resource to be set before being called. See "open".
The return value is always 1 or 0 indicating success or failure.
if ($d->unlock()) {
print "Unlock succeeded\n";
} else {
print "Unlock failed: ". $d->message() . "\n";
}
unset_prop([URL],[NAMESPACE],PROPNAME)
Unsets a property named "-propname" in the namespace "-namespace" for "-url".
Requires a working resource to be set before being called. See "open".
The return value is an "HTTP::DAV::Resource" object on success or 0 on failure.
The Resource object can be used for interrogating properties or performing other
operations.
Example:
if ( $r = $d->unset_prop(-url=>$url,
-namespace=>"dave",
-propname=>"author",
) ) {
print "Author property was unset\n";
} else {
print "set_prop failed:" . $d->message . "\n";
}
See the note in propfind about namespace support in HTTP::DAV. They're settable, but
not readable.
ACCESSOR METHODS
get_user_agent
Returns the clients' working "HTTP::DAV::UserAgent" object.
You may want to interact with the "HTTP::DAV::UserAgent" object to modify request
headers or provide advanced authentication procedures. See dave for an advanced
authentication procedure.
get_last_request
Takes no arguments and returns the clients' last outgoing "HTTP::Request" object.
You would only use this to inspect a request that has already occurred.
If you would like to modify the "HTTP::Request" BEFORE the HTTP request takes place
(for instance to add another header), you will need to get the "HTTP::DAV::UserAgent"
using "get_user_agent" and interact with that.
get_workingresource
Returns the currently "opened" or "working" resource ("HTTP::DAV::Resource").
The working resource is changed whenever you open a url or use the cwd command.
e.g.
$r = $d->get_workingresource
print "pwd: " . $r->get_uri . "\n";
get_workingurl
Returns the currently "opened" or "working" "URL".
The working resource is changed whenever you open a url or use the cwd command.
print "pwd: " . $d->get_workingurl . "\n";
get_lockedresourcelist
Returns an "HTTP::DAV::ResourceList" object that represents all of the locks we've
created using THIS dav client.
print "pwd: " . $d->get_workingurl . "\n";
get_absolute_uri(REL_URI,[BASE_URI])
This is a useful utility function which joins "BASE_URI" and "REL_URI" and returns a
new URI.
If "BASE_URI" is not supplied then the current working resource (as indicated by
get_workingurl) is used. If "BASE_URI" is not set and there is no current working
resource the "REL_URI" will be returned.
For instance:
$d->open("http://host.org/webdav/dir1/");
# Returns "http://host.org/webdav/dir2/"
$d->get_absolute_uri(-rel_uri=>"../dir2");
# Returns "http://x.org/dav/dir2/file.txt"
$d->get_absolute_uri(-rel_uri =>"dir2/file.txt",
->base_uri=>"http://x.org/dav/");
Note that it subtly takes care of trailing slashes.
ERROR HANDLING METHODS
message
"message" gets the last success or error message.
The return value is always a scalar (string) and will change everytime a dav operation
is invoked (lock, cwd, put, etc).
See also "errors" for operations which contain multiple error messages.
errors
Returns an @array of error messages that had been set during a multi-request
operation.
Some of "HTTP::DAV"'s operations perform multiple request to the server. At the time
of writing only put and get are considered multi-request since they can operate
recursively requiring many HTTP requests.
In these situations you should check the errors array if to determine if any of the
requests failed.
The "errors" function is used for multi-request operations and not to be confused with
a multi-status server response. A multi-status server response is when the server
responds with multiple error messages for a SINGLE request. To deal with multi-status
responses, see "HTTP::DAV::Response".
# Recursive put
if (!$d->put( "/tmp/my_dir", $url ) ) {
# Get the overall message
print $d->message;
# Get the individual messages
foreach $err ( $d->errors ) { print " Error:$err\n" }
}
is_success
Returns the status of the last DAV operation performed through the HTTP::DAV
interface.
This value will always be the same as the value returned from an HTTP::DAV::method.
For instance:
# This will always evaluate to true
($d->lock($url) eq $d->is_success) ?
You may want to use the is_success method if you didn't capture the return value
immediately. But in most circumstances you're better off just evaluating as follows:
if($d->lock($url)) { ... }
get_last_response
Takes no arguments and returns the last seen "HTTP::DAV::Response" object.
You may want to use this if you have just called a propfind and need the individual
error messages returned in a MultiStatus.
If you find that you're using get_last_response() method a lot, you may be better off
using the more advanced "HTTP::DAV" interface and interacting with the HTTP::DAV::*
interfaces directly as discussed in the intro. For instance, if you find that you're
always wanting a detailed understanding of the server's response headers or messages,
then you're probably better off using the "HTTP::DAV::Resource" methods and
interpreting the "HTTP::DAV::Response" directly.
To perform detailed analysis of the server's response (if for instance you got back a
multistatus response) you can call "get_last_response()" which will return to you the
most recent response object (always the result of the last operation, PUT, PROPFIND,
etc). With the returned HTTP::DAV::Response object you can handle multi-status
responses.
For example:
# Print all of the messages in a multistatus response
if (! $d->unlock($url) ) {
$response = $d->get_last_response();
if ($response->is_multistatus() ) {
foreach $num ( 0 .. $response->response_count() ) {
($err_code,$mesg,$url,$desc) =
$response->response_bynum($num);
print "$mesg ($err_code) for $url\n";
}
}
}
ADVANCED METHODS
new_resource
Creates a new resource object with which to play. This is the preferred way of
creating an "HTTP::DAV::Resource" object if required. Why? Because each Resource
object needs to sit within a global HTTP::DAV client. Also, because the new_resource
routine checks the "HTTP::DAV" locked resource list before creating a new object.
$dav->new_resource( -uri => "http://..." );
set_workingresource(URL)
Sets the current working resource to URL.
You shouldn't need this method. Call open or cwd to set the working resource.
You CAN call "set_workingresource()" but you will need to perform a "propfind"
immediately following it to ensure that the working resource is valid.
INSTALLATION, TODO, MAILING LISTS and REVISION HISTORY
[OUTDATED]
Please see the primary HTTP::DAV webpage at (http://www.webdav.org/perldav/http-dav/) or
the README file in this library.
SEE ALSO
You'll want to also read:
"HTTP::DAV::Response"
"HTTP::DAV::Resource"
"dave"
and maybe if you're more inquisitive:
"LWP::UserAgent"
"HTTP::Request"
"HTTP::DAV::Comms"
"HTTP::DAV::Lock"
"HTTP::DAV::ResourceList"
"HTTP::DAV::Utils"
AUTHOR AND COPYRIGHT
This module is Copyright (C) 2001-2008 by
Patrick Collins
G03 Gloucester Place, Kensington
Sydney, Australia
Email: pcollins@cpan.org
Phone: +61 2 9663 4916
All rights reserved.
Current co-maintainer of the module is Cosimo Streppone for Opera Software ASA,
opera@cpan.org.
You may distribute this module under the terms of either the GNU General Public License or
the Artistic License, as specified in the Perl README file.