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294 lines
7.4 KiB
Plaintext
294 lines
7.4 KiB
Plaintext
eGroupWare XML-RPC/SOAP Methodology
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(C) 2001-2004 Miles Lott
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milos@groupwhere.org
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August 23, 2001 and December 29, 2003
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additions made September 3, 2001.
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This document is very preliminary, but describes a working
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system.
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1 System level requests
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1.1 Login and authentication
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Authentication for user logins is handled internally no differently
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than for the typical eGroupWare login via web browser. Server
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logins, added for XML-RPC and SOAP, are only slightly different.
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For either protocol, user and server login and authentication
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and subsequent requests are handled by their respective
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server apps, xmlrpc.php and soap.php. A server is identified
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by a custom HTTP header, without which a normal user login
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will be undertaken.
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A client or server sends the appropriate XML-RPC or SOAP
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packet containing host, user, and password information to
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the egroupware server. The server then assigns a sessionid and
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key, which is returned to the client in the appropriate
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format.
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Our current method for authenticating requests after successful
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login is via the Authorization: Basic HTTP header to be
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sent by the client or requesting server. The format of this
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header is a base64 encoding of the assigned sessionid and
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kp3 variables, seperated by a ':'.
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Further security may be obtained by using SSL on the client
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and server. In the future, we may encrypt/decrypt the data
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on either end, or at least provide this as an option. The
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sessionid and key variables will make this possible, and
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relatively secure.
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1.1.1 system.login
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The first request a client will make is the system.login
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method. Here is a sample of a server login packet in XML-RPC:
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<?xml version="1.0"?>
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<methodCall>
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<methodName>system.login</methodName>
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<params>
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<param>
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<value><struct>
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<member><name>server_name</name>
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<value><string>my.host.name</string></value>
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</member>
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<member><name>username</name>
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<value><string>bubba</string></value>
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</member>
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<member><name>password</name>
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<value><string>gump</string></value>
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</member> </struct></value>
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</param>
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</params>
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</methodCall>
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And the same in SOAP:
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<?xml version="1.0"?>
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<SOAP-ENV:Envelope
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xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
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xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance" xmlns:xsd="http://www.w3.org/1999/XMLSchema"
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xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
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xmlns:si="http://soapinterop.org/xsd"
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xmlns:ns6="http://soapinterop.org" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
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<SOAP-ENV:Body> <ns6:system_login>
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<server_name xsi:type=":string">my.host.name</server_name>
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<username xsi:type=":string">bubba</username>
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<password xsi:type=":string">gump</password>
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</ns6:system_login>
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</SOAP-ENV:Body>
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</SOAP-ENV:Envelope>
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The same style of packet would be required for a user/client
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login. A successful login should yield the following reply:
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<methodResponse>
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<params>
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<param>
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<value><struct>
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<member><name>sessionid</name>
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<value><string>cf5c5534307562fc57915608377db007</string></value>
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</member>
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<member><name>kp3</name>
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<value><string>2fe54daa11c8d52116788aa3f93cb70e</string></value>
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</member>
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</struct></value>
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</param>
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</params>
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</methodResponse>
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And a failed login:
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<methodResponse>
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<params>
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<param>
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<value><struct>
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<member><name>GOAWAY</name>
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<value><string>XOXO</string></value>
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</member>
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</struct></value>
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</param>
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</params>
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</methodResponse>
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1.1.2 system.logout
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Logout:
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<?xml version="1.0"?>
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<methodCall>
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<methodName>system.logout</methodName>
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<params> <param>
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<value><struct>
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<member><name>sessionid</name>
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<value><string>ea35cac53d2c12bd05caecd97304478a</string></value>
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</member>
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<member><name>kp3</name>
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<value><string>4f2b256e0da4e7cbbebaac9f1fc8ca4a</string></value>
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</member>
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</struct></value>
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</param>
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</params>
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</methodCall>
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Logout worked:
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<methodResponse>
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<params>
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<param>
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<value><struct>
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<member><name>GOODBYE</name>
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<value><string>XOXO</string></value>
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</member>
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</struct></value>
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</param>
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</params>
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</methodResponse>
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2 Business layer requests
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Once a successful login return packet has been received and
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sessionid/kp3 have been extracted, every subsequent packet
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sent to the egroupware server must be preceded by an Authorization
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header. Here is a sample header:
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POST /egroupware/xmlrpc.php HTTP/1.0
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User-Agent: PHP XMLRPC 1.0
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Host: my.local.host
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Authorization: Basic ZDgxNDIyZDRkYjg5NDEyNGNiMzZlMDhhZTdlYzAxZmY6NTU3YzkyYjBmNGE4ZDVlOTUzMzI2YmU2OTQyNjM3YjQ=
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Content-Type: text/xml
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Content-Length: 875
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The longish string is a base64 encoding of the $sessionid
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. ':' . $kp3. For now this is our only supported authentication
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method. Additional methods would probably also affect the
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methodCalls. This is certainly open to discussion. Following
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is a typical request for some contact data:
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<?xml version="1.0"?>
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<methodCall>
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<methodName>addressbook.boaddressbook.read_entries</methodName>
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<params>
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<param>
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<value><struct>
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<member><name>start</name>
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<value><string>1</string></value>
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</member>
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<member><name>limit</name>
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<value><string>5</string></value>
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</member>
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<member><name>fields</name>
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<value><struct>
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<member><name>n_given</name>
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<value><string>n_given</string></value>
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</member>
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<member><name>n_family</name>
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<value><string>n_family</string></value>
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</member>
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</struct></value>
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</member>
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<member><name>query</name>
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<value><string></string></value>
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</member>
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<member><name>filter</name>
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<value><string></string></value>
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</member>
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<member><name>sort</name>
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<value><string></string></value>
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</member>
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<member><name>order</name>
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<value><string></string></value>
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</member>
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</struct></value>
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</param>
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</params>
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</methodCall>
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Successful response:
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<?xml version="1.0"?>
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<methodResponse>
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<params>
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<param>
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<value><struct>
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<member><name>0</name>
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<value><struct>
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<member><name>id</name>
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<value><string>1</string></value>
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</member>
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<member><name>lid</name>
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<value><string></string></value>
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</member>
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<member><name>tid</name>
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<value><string>n</string></value>
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</member>
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<member><name>owner</name>
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<value><string>500</string></value>
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</member>
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<member><name>access</name>
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<value><string>private</string></value>
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</member>
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<member><name>cat_id</name>
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<value><string>1</string></value>
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</member>
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<member><name>n_given</name>
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<value><string>Alan</string></value>
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</member>
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</struct></value>
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</member>
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<member><name>1</name>
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<value><struct>
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<member><name>id</name>
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<value><string>2</string></value>
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</member>
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<member><name>lid</name>
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<value><string></string></value>
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</member>
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<member><name>tid</name>
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<value><string>n</string></value>
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</member>
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<member><name>owner</name>
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<value><string>500</string></value>
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</member>
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<member><name>access</name>
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<value><string>private</string></value>
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</member>
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<member><name>cat_id</name>
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<value><string>1</string></value>
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</member>
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<member><name>n_given</name>
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<value><string>Andy</string></value>
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</member>
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</struct></value>
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</member>
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...
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Unauthorized access attempt returns:
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<methodResponse>
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<params>
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<param>
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<value><string>UNAUTHORIZED</string></value>
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</param>
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</params>
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</methodResponse>
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3 More to come...
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Documenting every single call will be difficult, but should
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be done. In leiu of this, please see the class.bo{APPNAME}.inc.php
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files in each application/inc directory in the egroupware
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cvs. In this file will be a list_methods() function, which
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returns the information to the server about input/output
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structure for each call. If the file does not have this
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function, then it is not yet workable via this interface.
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As for the actual functions, they are also in this file.
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Generally, they will all accept associative array input
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and return same, but not always. This code is in flux, have
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fun.
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