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Review 4, F4: `?shallow=true` kept every entry the user may at least pass through, and
a shallow read inlines short scalars' values with their types and sizes. A scalar at a
level a `*` passes through (a capability on `data/*/public`, an entry `data/count:
42`) showed its value though no capability covers it; before `*`, only a scalar where
a capability expected a map did.
Now an entry the user may read only partly is shown only as the way through it is: a
map, with no more than its type (not its size, the number of its keys); anything else
there (a scalar, a list, which a deep read leaves out too) isn't shown. Entries it may
read whole are as they were.
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Review 4, F1: `authorize` decided whether a request's endpoint was allowed by the
user's full capabilities, and applied a token's limit only afterwards, to the `Access`
it left for handlers. The store and the users endpoints read that; nothing else does.
So a token saying less than its user may do (the dashboard's hand-over token, reading
the member list only, for five minutes) did whatever the user may among the other
endpoints, on every node: for an operator, forgetting members, proposing or aborting
remakes, exporting the document, the quarantine, the log filter.
The limit is now applied first, and the endpoint decided by what is left (`allowed`,
its own function now, with a test: the hand-over token of an operator may look, and
nothing else).
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Setting a node's log filter took `write` on `_continuum`, all of the protocol data:
whoever could change one node's logging could change the swarm's members, remakes and
users too. Now what a node holds alone has paths of its own for capabilities, under
`_continuum/local/<node ID>/`: `log` (`/admin/log`), `config` (`/admin/config`) and
`debug` (`/debug`, always `write`), `read` to look and `write` to act
(`api::access::needed`, which takes the node's ID). So `_continuum/local/<node ID>` is
everything on one node, `_continuum/local/*/log` the log filter on every node, and
holders of `_continuum` keep it all.
Nothing is stored there: the store refuses writes under `_continuum/local`, and the
rules refuse a change touching it, as for epoch metadata. The quarantine stays with
`_continuum`: its entries are everyone's writes, which a node-local capability
mustn't show.
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POST /auth/login (by htpasswd or the proxy), /auth/refresh,
/auth/logout, GET /auth/whoami; every request may bring
Authorization: Bearer instead of a password. --token-lifetime and
--session-lifetime.
Auth plan M2.
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/admin/users: list, add (one or several), remove, disable, grant and
revoke capabilities; each one change, refused if it would lock its
writer out. Capabilities as the store's paths name them.
Auth plan M1.
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A write that would leave its own writer unable to manage users
(deleting, disabling or narrowing its entry, removing the registry) is
refused; --protocol-writers can set a registry right that nobody may
manage any more.
Auth plan M1.
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Every request is judged by the registry the node holds: store reads
pruned to what the user may read, writes refused where it may not,
admin endpoints by protocol capabilities. Without a registry, as
before (--protocol-writers for protocol data).
Auth plan M1.
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