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Symbian3/SDK/Source/GUID-2E986A81-F094-4F1D-9ECB-6A325CFA5BB4.dita
author Dominic Pinkman <dominic.pinkman@nokia.com>
Tue, 20 Jul 2010 12:00:49 +0100
changeset 13 48780e181b38
parent 8 ae94777fff8f
permissions -rw-r--r--
Week 28 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 1897 and Bug 1522.
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ae94777fff8f Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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<?xml version="1.0" encoding="utf-8"?>
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
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<!-- This component and the accompanying materials are made available under the terms of the License
ae94777fff8f Week 23 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 2714, Bug 462.
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"Eclipse Public License v1.0" which accompanies this distribution,
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
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<!-- Initial Contributors:
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    Nokia Corporation - initial contribution.
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Contributors:
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-->
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<!DOCTYPE concept
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="GUID-2E986A81-F094-4F1D-9ECB-6A325CFA5BB4" xml:lang="en"><title>Plug-ins</title><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>Plug-ins connect to the system using the EPOC Component Object
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Model (ECom). ECom is based on client/server architecture and provides
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services to instantiate, resolve, and destroy instances of plug-ins
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at run time. For more information, see the <xref href="GUID-30201A05-C6CE-5D34-9BDF-CDA4EE44878D.dita">ECom Architecture</xref>.</p>
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<fig id="GUID-C5D783F2-8388-4097-8276-BAC6D5B17C2C"><title>ECom framework</title><image href="GUID-231E58F2-7935-462A-B048-51729D8245D4_d0e12411_href.png"/></fig>
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<p>A hostile or malfunctioning plug-in may cause crashes or security
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leaks, even on otherwise well-tested applications. The <xref href="GUID-4BFEDD79-9502-526A-BA7B-97550A6F0601.dita">platform security</xref> architecture protects the processes by verifying that the plug-in
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has equal or greater set of capabilities than the process in which
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it is loaded. For more information, see the <xref href="GUID-9E4D75C0-D797-5541-8E52-3C6D154CC74A.dita">ECom and the Platform
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Security Architecture</xref>. </p>
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<p>For examples, see <xref href="GUID-E59A469E-A2B5-5DF0-BA7E-C50D4A38CCAA.dita">Plug-in Framework
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(ECom) Examples</xref>.</p>
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<section id="GUID-2268BF28-467F-409F-B68C-5D361E8C5FF0"><title>Communication
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plug-ins</title>
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<p>It is possible to use plug-ins to implement additional functionality
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to serial, socket, and messaging frameworks. These plug-ins are especially
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important for security because they deal with communication.</p>
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<ul>
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<li><p>For serial communication there are serial protocol
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modules (CSY modules ), which are loaded by the Serial Comms Server.
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For more information on serial communication, see <xref href="GUID-9B83CDD4-FC94-51A0-AC67-CD04BCAFEF08.dita">Serial Communications
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Server</xref>.</p></li>
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<li><p>For socket-based communication there are protocol
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modules (PRT), which are loaded by the Socket Server. For more information
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on socket-based communication, see <xref href="GUID-61E0CD76-A2E3-5066-84A8-146EECA8ADCD.dita">Socket Server</xref>.</p></li>
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<li><p>For messaging there are Message Type Modules (MTM),
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which include both client and server components. MTMs are a set of <codeph>dll</codeph>s rather than a single <codeph>dll</codeph>. For more
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information, see <xref href="GUID-8B843382-D27A-5E36-8F60-304903F3AA41.dita">Message Type Module</xref>.</p></li>
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</ul>
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</section>
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</conbody></concept>
MCL/sftools/depl/docscontent