678948068b
-=-=-=-=-=-=-=-=-=-=-=-=-= -Begin work on Navigation Meshes (simple pathfinding for now, will improve soon) -More doc on theme overriding -Upgraded OpenSSL to version without bugs -Misc bugfixes
95 lines
3.4 KiB
Text
95 lines
3.4 KiB
Text
The STORE type
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==============
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A STORE, as defined in this code section, is really a rather simple
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thing which stores objects and per-object associations to a number
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of attributes. What attributes are supported entirely depends on
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the particular implementation of a STORE. It has some support for
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generation of certain objects (for example, keys and CRLs).
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Supported object types
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----------------------
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For now, the objects that are supported are the following:
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X.509 certificate
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X.509 CRL
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private key
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public key
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number
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arbitrary (application) data
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The intention is that a STORE should be able to store everything
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needed by an application that wants a cert/key store, as well as
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the data a CA might need to store (this includes the serial number
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counter, which explains the support for numbers).
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Supported attribute types
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-------------------------
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For now, the following attributes are supported:
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Friendly Name - the value is a normal C string
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Key ID - the value is a 160 bit SHA1 hash
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Issuer Key ID - the value is a 160 bit SHA1 hash
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Subject Key ID - the value is a 160 bit SHA1 hash
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Issuer/Serial Hash - the value is a 160 bit SHA1 hash
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Issuer - the value is a X509_NAME
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Serial - the value is a BIGNUM
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Subject - the value is a X509_NAME
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Certificate Hash - the value is a 160 bit SHA1 hash
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Email - the value is a normal C string
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Filename - the value is a normal C string
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It is expected that these attributes should be enough to support
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the need from most, if not all, current applications. Applications
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that need to do certificate verification would typically use Subject
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Key ID, Issuer/Serial Hash or Subject to look up issuer certificates.
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S/MIME applications would typically use Email to look up recipient
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and signer certificates.
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There's added support for combined sets of attributes to search for,
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with the special OR attribute.
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Supported basic functionality
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-----------------------------
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The functions that are supported through the STORE type are these:
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generate_object - for example to generate keys and CRLs
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get_object - to look up one object
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NOTE: this function is really rather
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redundant and probably of lesser usage
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than the list functions
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store_object - store an object and the attributes
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associated with it
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modify_object - modify the attributes associated with
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a specific object
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revoke_object - revoke an object
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NOTE: this only marks an object as
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invalid, it doesn't remove the object
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from the database
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delete_object - remove an object from the database
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list_object - list objects associated with a given
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set of attributes
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NOTE: this is really four functions:
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list_start, list_next, list_end and
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list_endp
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update_store - update the internal data of the store
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lock_store - lock the store
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unlock_store - unlock the store
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The list functions need some extra explanation: list_start is
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used to set up a lookup. That's where the attributes to use in
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the search are set up. It returns a search context. list_next
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returns the next object searched for. list_end closes the search.
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list_endp is used to check if we have reached the end.
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A few words on the store functions as well: update_store is
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typically used by a CA application to update the internal
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structure of a database. This may for example involve automatic
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removal of expired certificates. lock_store and unlock_store
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are used for locking a store to allow exclusive writes.
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