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11.4.2.9 Integration with providers
The following shall be supported to enable the streamed media API to be used in combination with the provider API (see clause 11.7.9, "Provider API"). Since service providers (clause 11.7.9) are optional in GEM, this clause is not required by GEM terminal specifications. • An implementation specific DataSource (referre...
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11.4.2.10 Additional and modified semantics for IPTV
For services and content items available through RTSP, calls to the method Player.setRate shall result in a request to change the scale value as defined in clause 12.34 of RFC 2326 [82]. The return value of the method shall be the actual scale value chosen by the server. NOTE: There is no standardized mechanism for obt...
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11.4.2.11 Time-setting operations for OTT
In an OTT target, when the methods involved in changing the current media time, i.e. javax.media.Player. setMediaTime()and org.davic.media.MediaTimePositionControl.setMediaTimePosition() are invoked, implementations will achieve the result expected by applications, transparently to the applications themselves. The way ...
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11.5 Data access APIs
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11.5.1 Broadcast Transport Protocol Access API
The broadcast transport protocol access API is defined in P "(normative): Broadcast Transport Protocol Access". Relative file names used to access objects in the application filesystem shall be taken as being relative to the base directory indicated in the Application Description defined in clause 10.5, "DVB-J specific...
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11.5.1.1 Constraints on the java.io.File methods for broadcast carousels
The application shall be able to use the standard java.io.File class for access to broadcast carousels (e.g. a carousel unaware application). In this case, the following definitions shall apply: • The constructor of File only creates an instance of the abstract pathname and shall not cause synchronous access to the bro...
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11.5.1.2 Methods dealing with write access
The java.io.File class also contains methods that assume write access to the file system. Due to its broadcast nature, the receiver naturally does not have write access to the carousel. NOTE: A broadcast carousel is not a read-only file system (which has the property of not changing). The carousel content can certainly...
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11.5.1.3 Behaviour following loss of a broadcast carousel
When a broadcast carousel is lost to an application as described in clause 6.2.5.3, "Loss of carousel behaviour", the following failure modes shall be followed for data which is unavailable: • Attempting to load data from a file using a content format specific API shall fail as if the file itself never existed. This sh...
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11.5.2 Support for Multicast IP over the Broadcast Channel
Where support for carriage of multicast IP over the broadcast channel (see clause 6.2.6) is included, the following shall apply: a) In java.net.MulticastSocket, the send method shall throw an IOException when called on sockets bound to unidirectional sources of IP multicast data. b) In java.net.DatagramSocket, the send...
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11.5.3 Support for IP over the Return Channel
NOTE 1: Where support for IP over the return channel is not included, APIs in the java.net package will fail as defined in the specification of this API. Where support for IP over the return channel is supported, platforms not implementing specific optional return channel protocols will fail as defined in the specifica...
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11.5.4 MPEG-2 Section Filter API
The MPEG-2 section filter API is defined in Annex E of DAVIC 1.4.1p9 [17].
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11.5.5 Mid-Level Communications API
See Annex R, "DVB-J return channel connection management API". On devices whose return channel can be connected or disconnected, when use of java.net.Socket or a java. net.URLConnection automatically sets up a connection, this shall be reported through this API to any applications listening for it. Implementations shal...
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11.5.6 Persistent Storage API
• The API to persistent storage shall be the javax.microedition.io package, the java.io package and the extensions to it found in the org.dvb.io.persistent defined in Annex K, "DVB-J persistent storage API". • The "dvb.persistent.root" property which can be obtained from java.lang.System.getProperty() identifies the di...
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11.5.7 File Storage Device Access
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11.5.7.1 Basic Specification
The API for access to file storage devices is the org.ocap.storage package defined in clause 13.3.7.5 and Annex V of OCAP [5].
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11.5.7.2 DVB specific modifications
The following modifications apply to the org.ocap.storage package in the context of the present document: • The requirement that "Persistent storage device contained within or attached to a Host device shall be represented by a StorageProxy" does not apply in the present document. Only detachable and removable devices ...
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11.6 Service information and selection APIs
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11.6.1 Signalling-specific service information API
There is no signalling specific SI API defined in GEM. GEM terminal specifications shall provide any needed service information API specific to their signalling.
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11.6.2 Service selection API
The service selection API is defined by the javax.tv.service.selection package from Java TV [16] and the org.dvb.service.selection package defined in Annex AK. All instances of ServiceContext returned by the GEM terminal shall be instances of DvbServiceContext. On the first occasion when a the JMF player is obtained fo...
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11.6.3 Tuning API
GEM terminal specifications for packaged media targets are not required to support a tuner. The definitions and requirements of this clause apply only to GEM terminal specifications that support a tuner.
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11.6.3.1 Generic description
The tuning API is defined in Annex H of DAVIC 1.4.1p9 [17] apart from section H.4, (the Locator and DvbLocator classes) which are found in clause 11.7.6, "Content referencing". The reference to the DvbLocator class does not apply to GEM terminal specifications that do not include the functional equivalent named "Conten...
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11.6.3.2 Tuning in IPTV
In IPTV, the tuning API shall represent control over the input to the MPEG-2 demultiplexer. Hence tuning to a transport stream means connecting that transport stream to this input.
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11.6.3.3 Tuning in OTT
In OTT, the tuning API shall represent control over the input to the stream decoder / demultiplexer. Hence tuning to a transport stream means connecting that transport stream to this input.
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11.6.4 Conditional access API
The present document does not require a conditional access subsystem, nor does it place requirements on one if it is present. GEM terminal specifications may define any needed conditional access API.
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11.6.5 Protocol independent SI API
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11.6.5.1 Generic description
The protocol independent SI API is defined by the following packages from Java TV [16]: • javax.tv.service • javax.tv.service.guide • javax.tv.service.navigation • javax.tv.service.transport The mapping of this onto the DVB-SI protocol is specified in Annex O, "Integration of the JavaTV SI API". The mapping of this ont...
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11.6.5.2 Transport independent and dependent services
The following clarifications shall apply to Java TV as used in GEM. • All instances of Service that are not instances of a standardised sub-type of Service (e.g. AbstractService, StoredApplicationService or InternetClientService) shall be instances of either TransportIndependentService or TransportDependentService. • I...
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11.6.5.3 Modified Semantics of Existing APIs
Clause T.2.2.16 of OCAP [5] shall be supported for instances of javax.tv.service.navigation.ServiceDetails corresponding to abstract services.
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11.6.5.4 Extensions
This is the org.dvb.service and org.dvb.service.navigation packages.
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11.6.6 Service discovery and selection for IPTV
This is the org.dvb.service.sds package. The org.dvb.service.DvbSIManager class shall implement org.dvb.service.sds.SDSRecordAccess. The org.dvb.service.sds package is defined in Annex AW. ETSI ETSI TS 102 728 V1.2.1 (2011-09) 153
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11.6.7 Integration between protocol independent SI API and TV-Anytime
This is the org.dvb.tvanytime.javatv package. The org.dvb.service.DvbSIManager class shall implement the org.dvb.tvanytime.javatv.CRIDAccess interface. Instances of javax.tv.service.guide.ProgramEvent whose data was obtained via the TV-Anytime protocols used in TS 102 539 [80] shall implement org.dvb.tvanytime.javatv.T...
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11.7 Common infrastructure APIs
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11.7.1 APIs to support DVB-J application lifecycle
This API is formed of the Java classes and interfaces found in the javax.tv.xlet package specified in Java TV [16]. In addition, the package javax.microedition.xlet contains similar classes. In either case, the XletContext passed to the Xlet shall implement both javax.microedition.xlet.XletContext and javax.tv.xlet.Xle...
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11.7.1.1 Xlet properties
The following named Xlet properties shall be supported: • dvb.org.id • dvb.app.id • dvb.caller.parameters They can be retrieved from an Xlet's XletContext by calling getXletProperty with the string name defined above. All keys for XletContext.getXletProperty beginning 'dvb.' are reserved for use in DVB project specific...
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11.7.1.2 Actions for DVB-J applications to perform in their destroy method
Xlets shall perform at least the following in their Xlet.destroyXlet method and before calling XletContext.notifyDestroyed: • Cause any threads that they have created to exit voluntarily. • Stop, deallocate and close any JMF players that they have created. • Stop and destroy any Java TV service selection ServiceContext...
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11.7.2 Application discovery and launching APIs
This API is formed of the org.dvb.application package defined in Annex S, "Application listing and launching". In GEM terminal specifications that include the functional equivalent named "Carousel" defined in clause 15.6, "Functional equivalents", full support of all properties defined for use with the method AppAttrib...
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11.7.3 Inter-application communication API
This API is formed of the packages java.rmi and javax.microedition.xlet.ixc as specified in PBP 1.1 [4] plus the package org.dvb.io.ixc. Two named xlet properties are introduced: dvb.org.id and dvb.app.id. They can be retrieved from an xlet's XletContext by calling getXletProperty("dvb.org.id") and getXletProperty("dvb...
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11.7.4 Basic MPEG concepts
NOTE: The API from DAVIC defined in this clause is made optional for packaged media targets in clause 15, "Detailed platform profile definitions" because it relates to transport streams. This API is formed of the Java classes defined in Annex G of DAVIC 1.4.1p9 [17]: • ApplicationOrigin • ElementaryStream • Service • T...
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11.7.5 Resource notification
The resource notification API is defined in Annex F of DAVIC 1.4.1p9 [17]. • The notifyRelease() method shall be called for all ResourceClients where the corresponding resource has been removed without the application releasing it. The release() method shall be called for specific resources where time to cleanup is of ...
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11.7.6 Content referencing
This API is formed of the DAVIC Locator class and the javax.tv.locator package. The DAVIC package org.davic.net.dvb is not required by the present document. GEM terminal specifications may define one or more subclasses of the DAVIC Locator class. ETSI ETSI TS 102 728 V1.2.1 (2011-09) 158 The signature of the org.davic....
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11.7.7 Common error reporting
This API is formed of the interface and exceptions defined in Annex G of DAVIC 1.4.1p9 [17]: • NotAuthorizedInterface • NotAuthorizedException • ObjectUnavailableException • ResourceException • TuningException NotAuthorizedInterface and NotAuthorizedException are required to be present for GEM terminal specifications t...
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11.7.8 Plug-in APIs
The plug-in API is defined in Annexes AF, "Plug-in APIs" and AE, "Inner Applications" of the present document. NOTE: This is the package org.dvb.application.plugins. GEM inter-operable plug-ins signalled with the delegated application descriptor (see clause 10.7.3) shall implement the org.dvb.application.plugins.Plugin...
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11.7.9 Provider API
The provider APIs are defined in Annex AN. NOTE: This is the package org.dvb.spi.
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11.7.9.1 API framework
This is the org.dvb.spi and org.dvb.spi.util packages. Tables 35, 36, 37 and 38 define the mapping that shall be used between the provider APIs and the corresponding API as called by GEM applications.
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11.7.9.2 SelectionProvider
This is the org.dvb.spi.selection package. Table 35: Mapping from javax.tv.service.Service to provider APIs Method Mapping getLocator ServiceReference.getLocator. getName ServiceDescription.getLongName. getServiceType ServiceDescription.getServiceType. hasMultipleInstances Calculated by the receiver, returns true if an...
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11.7.9.3 SI providers
This is the org.dvb.spi.si.simple and org.dvb.spi.si.full packages. Table 37: javax.tv.guide.ProgramSchedule Service Mapping addListener None needed. Events are generated after calls to programDescriptionAvailable and scheduleDescriptionAvailable. removeListener getServiceLocator Indirect - implementation must maintain...
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11.7.9.4 InteractionChannelTransportProvider
Table 39 describes the interaction of DSMCCObject with the ICT service provider implementation, including differences in behaviour from classical broadcast carousel objects. Table 39 DSMCCObject Method Service Provider Method Comments DSMCCObject(String) DSMCCObject(String, String) DSMCCObject(DSMCCObject, String) Inte...
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11.8 Security
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11.8.1 Basic Security
The GEM platform shall always install a SecurityManager before starting any DVB-J applications. In GEM terminals where the mhp.smartcard.reader property is known and has the value "SUPPORTED", GEM applications shall be able to use a Provider installed by a GEM application as defined in Annex AJ, "Cryptographics service...
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11.8.2 APIs for return channel security
This API is defined in the J2ME Security (JSSE) Optional Package Specification v1.0 which is found in FP 1.1 [77]. It includes the package javax.microedition.io. NOTE 1: JSSE is optional in PBP 1.1 [4]. Cipher suites listed in table 56 "Profile of cipher suites that implementations are required to support" shall have t...
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11.8.3 Additional permissions classes
See Annex T, "Permissions". For GEM terminal specifications that do not support the functional equivalent named "conditional access", the package org.dvb.net.ca is not required. For GEM terminal specifications that do not support the functional equivalent named "SI", the class org.dvb.net.tuning.DvbNetworkInterfaceSIUt...
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11.8.4 General Security Issues
Unless otherwise specified, sub-classes of java.security.Permission are not required to check the input parameters to their constructors. When a GEM platform constructs these, it is responsible for creating them with legal values. The behaviour of a GEM platform if an application creates such an instance with illegal v...
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11.8.5 Cryptographic API
This API is defined in the J2ME Security (JCE) Optional Package Specification v1.0 part of FP 1.1 [77]. NOTE: The JCE optional package is optional in PBP 1.1 [4]. In GEM terminals where the mhp.smartcard.reader property is known and has the value "SUPPORTED", GEM applications shall be able to use a Provider installed b...
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11.8.6 DVB Extensions for Cryptography
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11.8.6.1 Introduction (informative)
"Java2 Standard Edition" includes APIs providing the ability to use PKCS11 tokens (such as smart cards) in Java applications. These APIs simplify the way in which Java applications can handle removable smart cards. They are also needed to login into PKCS11 token for non-key related operations such as encryption and dec...
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11.8.6.1.1 The org.dvb.security package
This package provides the AuthProvider class which is needed to log into a PKCS11 token for non key related operations. In that case, there is no other way for a java application to send the PIN code. It also provides the KeyStoreBuilder class to install a callback handler which is called when a PIN code is required to...
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11.8.6.1.2 The org.dvb.auth.callback package
This package is required to support the KeyStoreBuilder mechanism. Applications are responsible for asking the end-user for the PIN code. Applications will request the PIN code by implementing the interface CallbackHandler from this package. This handler will receive a PasswordCallback object when the implementation re...
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11.8.6.1.3 The org.dvb.net.ssl package
During the SSL handshake, the SSL engine uses TrustManagers to make sure the certificate chain received from the server is trusted. If client authentication is enabled, the SSL engine will use KeyManagers to find a certificate chain and a private key according to the CertificateRequest message from the server. The Cert...
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11.8.6.1.4 The org.dvb.security.pkcs11 package
In J2SE 5.0, the Sun PKCS11 provider is configured via a text configuration file. This file is used, to indicate which PKCS11 slot is associated with the provider. For GEM, it may be useful for an application to select a particular slot (if there are several slots and tokens). The methods getSlotList and getTokenInfo o...
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11.8.6.2 Specification
This API is formed of the following package and is defined in Annex AI, "DVB Extensions for cryptography". • org.dvb.security • org.dvb.security.pkcs11 • org.dvb.auth.callback • org.dvb.net.ssl Installation of cryptographic service providers shall be supported as defined in Annex AJ, "Cryptographics service provider in...
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11.9 Other APIs
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11.9.1 Timer support
This API is formed of the Timer API defined in Java TV [16] in the javax.tv.util package. Implementations are required to meet the following specifications: • Minimum repeat interval less than or equal to 40 ms. • Granularity less than or equal to 10 ms. The only condition defined in GEM where TVTimer.scheduleTimerSpec...
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11.9.2 User settings and preferences API
This API is defined in Annex L, "User settings and preferences API". The preferences listed below shall be accessible to all applications. • User Language. • Parental Rating. • Country Code. • Default Font Size. Other preferences shall only be accessible where a UserPreferencePermission for "read" has been granted (see...
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11.9.3 Profile and version properties
All of the system properties defined in this clause are required. For GEM-based terminal specifications, the properties indicating the profile ("mhp.profile.enhanced_broadcast", "mhp.profile.interactive_broadcast" and "mhp.profile.internet_access") are to be interpreted as referring to the profile descriptions in claus...
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11.9.3.1 Information on options
Clause 15, "Detailed platform profile definitions" defines what is mandatory and optional for each profile. In order to give an application information about which options a particular GEM implementation supports, a property string is defined for each option (with the same granularity as in clause 15). A GEM implementa...
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11.9.4 Non-CA smart card API
The API for access to non-conditional smart cards shall be comprised of the following: • the "SATSA-APDU" optional package defined by SATSA [69]; • the classjavax.microedition.apdu.APDUPermission defined in clause B.1.2.1 of that document; • the org.dvb.smartcard package defined in Annex AM, "Smart card reader API". NO...
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11.9.5 XML parsing API
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11.9.5.1 SAX
The XML parsing API is defined in clause 2, "JAXP Subset", of JSR 172 [75]. ETSI ETSI TS 102 728 V1.2.1 (2011-09) 168
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11.9.5.2 JDOM
This is the org.dvb.xml.jdom package from TS 102 816 [81].
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11.9.6 GEM terminal hardware API
This is the org.dvb.hardware package defined in Annex AZ, "MHP terminal hardware API".
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11.9.7 Content Download API
The content download API is described in Annex BA. The content download API is based on the shared DVR API for scheduling and managing recording requests [84]. 11.10 Java permissions Under the security model for DVB-J applications, a permissions file is associated with authenticated applications; unauthenticated applic...
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11.10.1.1 java.awt.AWTPermission
This control access to sensitive parts of AWT which is not needed for GEM applications. This shall be denied for both unsigned and signed applications.
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11.10.1.2 java.net.SocketPermission
Because access to return channel is not within the sandbox, this is not required for unsigned applications.
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11.10.1.3 java.util.PropertyPermission
For unsigned applications, a read permission shall be granted for all properties defined in the present document except for those explicitly identified as only available for signed applications. The permission shall be denied for the action string "write". A read permission may also be granted for other properties exce...
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11.10.1.4 java.lang.RuntimePermission
This permission shall be denied for both unsigned and signed applications. ETSI ETSI TS 102 728 V1.2.1 (2011-09) 169
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11.10.1.5 java.io.SerializablePermission
This permission shall be denied for both unsigned and signed applications.
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11.10.1.6 java.io.FilePermission
A read permission shall be granted for the subtree under which the implementation mounts the object carousels.
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11.10.1.7 javax.tv.media.MediaSelectPermission
The Media API (i.e. JMF) is within the sandbox, so all applications shall be granted a javax.tv.media.MediaSelectPermission with a locator string "*" that indicates access to all media streams.
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11.10.1.8 javax.tv.service.ReadPermission
Access to Service Information is within the sandbox, so all applications shall be granted a javax.tv.service.ReadPermission with a locator string "*".
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11.10.1.9 javax.tv.service.selection.ServiceContextPermission
All applications shall be granted a javax.tv.service.selection.ServiceContextPermission with a name string "getServiceContentHandlers" and action string "own". ServiceContextPermission( "access", "own" ) shall be granted to all MHP applications. ServiceContextPermission( "access", "*" ) shall not be granted.
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11.10.1.10 java.util.Locale.setDefault
This method shall throw a security exception.
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11.10.1.11 Applications signalled in AIT File
Applications signalled in an AIT File (clause 10.4.5, "AIT File") shall have an instance of SocketPermission for each combination of host and port number listed in all transport protocol descriptors with the protocol ID value 0x0003 in both their AIT entry and in the "common" descriptor loop. Each permission shall have...
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11.10.1.12 javax.microedition.xlet.ixc.IxcPermission
Unsigned applications shall be granted: • IxcPermission("dvb:/unsigned/*", "lookup"). • IxcPermission("dvb:/unsigned/organisation_id/application_id/*", "bind"). • IxcPermission("dvb:/ixc/organisation_id/application_id/*", "bind"). • IxcPermission("dvb:/ixc/*", "lookup"). • IxcPermission("dvb:/service/service_context_id...
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11.10.1.13 MonitorAppPermission and ServiceTypePermission
Unsigned applications shall not be granted MonitorAppPermission or ServiceTypePermission. ETSI ETSI TS 102 728 V1.2.1 (2011-09) 170 11.10.2 Additional Permissions for signed applications Signed applications can additionally request to get more permissions. These permissions are requested using the permission request fi...
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11.10.2.1 java.util.PropertyPermission
For signed applications, a read permission shall be granted for all properties for unsigned applications and dvb.persistent.root.
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11.10.2.2 java.io.FilePermission
A read permission shall be granted for the subtree under which the implementation mounts the object carousels or any other filesystem that may be mounted using the DSMCC APIs. The following occurs when the permission request file requests the permission to access persistent storage and this is granted: 1) A FilePermiss...
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11.10.2.3 org.dvb.net.ca.CAPermission
When the permission request file requests the permission to communicate with a CA system and this is granted, a CAPermission is created as follows: The CA system ID string from the permission request file is directly used as the first part of the string used for the CApermission constructor, this is concatenated with a...
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11.10.2.4 org.dvb.application.AppsControlPermission
When the permission request file requests the permission to have additional permissions to control the lifecycle of applications and this is granted, an AppsControlPermission is created. ETSI ETSI TS 102 728 V1.2.1 (2011-09) 171
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11.10.2.5 org.dvb.net.rc.RCPermission
When the permission request file requests the permission to communicate through the return channel and this is granted, an RCPermission is created as follows: • For the default ISP item, the RCPermission is created with "target:default" string. • For items with phone numbers in them, the string is "target:" + the phone...
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11.10.2.6 org.dvb.net.tuning.TunerPermission
When the permission request file requests the permission to access the Tuning API and this is granted, an TunerPermission is created. If a GEM terminal specification does not support the "Tuning API", in clause 11.6.3, listed in table 61, the class org.dvb.net.tuning.TunerPermission is not required by the present docum...
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11.10.2.7 javax.tv.service.selection.SelectPermission
By default a SelectPermission is created with a locator "*" and action string "own" and a ServiceContextPermission is created with a name "*" and action string "own", unless denied by an entry in the permission request file. GEM terminal specifications may define types of service other than broadcast. The present docum...
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11.10.2.8 org.dvb.user.UserPreferencePermission
When the permission request file requests the permission to read and/or write user preferences and this is granted, a UserPreferencePermission is created as follows: • When the permission request file includes "true" for the "read" attribute and this is granted, a UserPreferencePermission is created with the string "re...
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11.10.2.9 java.net.SocketPermission
When the permission request file requests the permission to communicate with remote hosts and this is granted, SocketPermissions are created with the host and action as indicated in the permission request file. These permissions shall not be granted in MHP terminals where all return channels are represented by instance...
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11.10.2.10 org.dvb.media.DripFeedPermission
When the permission request file requests the permission to use the drip feed feature and this is granted, a DripFeedPermission shall be created. ETSI ETSI TS 102 728 V1.2.1 (2011-09) 172
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11.10.2.11 org.dvb.application.storage.ApplicationStoragePermission
When the permission request file requests the permission to store applications and this is granted, a ApplicationStoragePermission is created. This permission class is defined in Annex AG, "Stored application APIs".
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11.10.2.12 javax.microedition.apdu.APDUPermission
When the permission request file requests the permission to access the smart card API and this is granted, an instance of javax.microedition.apdu.APDUPermission is created with the name "aid".
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11.10.2.13 ServiceContextPermission
On MHP terminals supporting the internet access profile, all applications which are granted a SelectPermission (see clause 11.10.2.7, "javax.tv.service.selection.SelectPermission") shall be granted instances of javax.tv.service.Selection.ServiceContextPermission with names: • "create"; • "destroy"; • "stop". all of the...
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11.10.2.14 javax.microedition.xlet.ixc.IxcPermission
Signed applications shall be granted: • IxcPermission("dvb:/signed/*", "lookup"). • IxcPermission("dvb:/signed/organisation_id/application_id/*", "bind"). • IxcPermission("dvb:/ixc/organisation_id/application_id/*", "bind"). • IxcPermission("dvb:/ixc/*", "lookup"). • IxcPermission("dvb:/service/service_context_id/signe...
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11.10.2.15 org.dvb.spi.ProviderPermission
Where the permission request file requests the right to install providers and this is granted, an instance of ProviderPermission shall be created for the classname listed. If the scope attribute of the request is "application" then the action of the permission shall be "xlet". If the scope attribute of the request is "...
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11.10.2.16 Permissions for Unbound and Privileged Applications
For signed applications: • When the permission request file requests servicetypepermission and this is granted, an instance of ServiceTypePermission shall be created with the type and action requested in the permission request file. • When the permission request file requests "monitorapplication" capabilities and this ...