Brian Warner bc21726dfd new introducer: signed extensible dictionary-based messages! refs #466 ... This introduces new client and server halves to the Introducer (renaming the old one with a _V1 suffix). Both have fallbacks to accomodate talking to a different version: the publishing client switches on whether the server's .get_version() advertises V2 support, the server switches on which subscription method was invoked by the subscribing client. The V2 protocol sends a three-tuple of (serialized announcement dictionary, signature, pubkey) for each announcement. The V2 server dispatches messages to subscribers according to the service-name, and throws errors for invalid signatures, but does not otherwise examine the messages. The V2 receiver's subscription callback will receive a (serverid, ann_dict) pair. The 'serverid' will be equal to the pubkey if all of the following are true: the originating client is V2, and was told a privkey to use the announcement went through a V2 server the signature is valid If not, 'serverid' will be equal to the tubid portion of the announced FURL, as was the case for V1 receivers. Servers will create a keypair if one does not exist yet, stored in private/server.privkey . The signed announcement dictionary puts the server FURL in a key named "anonymous-storage-FURL", which anticipates upcoming Accounting-related changes in the server advertisements. It also provides a key named "permutation-seed-base32" to tell clients what permutation seed to use. This is computed at startup, using tubid if there are existing shares, otherwise the pubkey, to retain share-order compatibility for existing servers.		2012-03-13 18:24:32 -07:00
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__init__.py	break storage.py into smaller pieces in storage/*.py . No behavioral changes.	2009-02-18 14:46:55 -07:00
common.py	storage/immutable: raise a specific error upon seeing a bad version number, instead of using assert. Also wrap to 80cols.	2009-03-08 20:07:32 -07:00
crawler.py	hush pyflakes-0.4.0 warnings: remove trivial unused variables. For #900.	2010-01-14 14:15:29 -08:00
expirer.py	Change relative imports to absolute	2010-02-26 01:14:33 -07:00
immutable.py	immutable: prevent clients from reading past the end of share data, which would allow them to learn the cancellation secret	2011-09-12 15:24:58 -07:00
lease.py	storage: add a lease-checker-and-expirer crawler, plus web status page.	2009-03-06 22:45:17 -07:00
mutable.py	storage: more paranoid handling of bounds and palimpsests in mutable share files	2011-09-12 15:26:55 -07:00
server.py	new introducer: signed extensible dictionary-based messages! refs #466	2012-03-13 18:24:32 -07:00
shares.py	Change relative imports to absolute	2010-02-26 01:14:33 -07:00