| Commit message (Collapse) | Author | Age | Files | Lines |
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How many writers (Automerge actors) the document's changes have matters: a writer is a
node's run (each start, rejoin or drop makes one, a start keeping the one of before with
`--keep-actor` after a clean stop), and every transfer of the whole history carries a
signature for each. `/admin/stats` now says it (`document.writers`, and
`document_writers` for Prometheus), counted from the changes' metadata alongside the
saved size's measurement in the background (at least a minute apart), as that takes
time proportional to the document too; an export, which measures the size alone, keeps
the count of before. The dashboard's figures show it with the rest.
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`GET /auth/whoami` lists the user's capabilities (`caps`) and its token's `limit`, if
any, side by side; what the request may do is what both give, as endpoints decide it.
It says so now (`may`): the capabilities, or with a limit each capability met with each
of the limit's (`Capability::meet`): at the deeper of the two paths, a `*` of one
taking the other's key there, with the rights both name; nothing where the paths part,
no right is shared, or the path is protocol data one of them doesn't name.
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Review 4, F11: only streams answered to a token ended with it (1273); one opened by
password (basic authentication) or a proxy's header went on after its user was
disabled or removed.
`streams_end` now wraps those too, by the user `basic_auth` leaves on the answer: such
a stream ends once the document no longer has its user, enabled
(`token::user_taken`, the part of a token's check about its user, which
`still_taken` uses too), looked at as the stream begins and as protocol data changes.
No expiry: a password has none.
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Review 4, F9: a stream answered to a token subscribed to the document's changes only
when its body was first polled, and looked at the token only after a change came: one
revoking it that came between the request's check and the subscription (a node
applying what it was behind on) went unseen until the next change of protocol data, or
the token's expiry.
Now `streams_end` subscribes before the answer is made, and the token is looked at once
as the stream begins (`refused_now`, the document and this node's ended sessions), then
with every change of protocol data as before. A request that isn't answered with a
stream drops its subscription with the answer.
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Review 4, F7: `DELETE /auth/session` recorded the session as ended until the
`session_exp` of the token it came with. A token handed to another member's dashboard
has its `session_exp` cut to its own end (five minutes), and so has the session that
dashboard keeps with it: logging out there recorded an end minutes away, the next
remake's snapshot left it out, and the original browser's tokens of the same session,
refreshable for days, were taken again.
A token now keeps the login's end as it logged in (`Claims::login_exp`), which no
refresh changes, and an ended session is recorded until then (or the token's
`session_exp`, if later, as for a token from before the field).
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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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A token was checked when a request came, and a stream answered to it (the dashboard's
events, a subscription's links and messages, the store's streams) then went on for as
long as the client kept it open: past the token's expiry, past its user's tokens being
revoked, its user disabled or removed, its session ended.
Now a middleware inside `login::bearer` (`login::streams_end`) ends a streaming answer
(`text/event-stream`, `application/x-ndjson`) to a request with a token at the token's
deadline, its expiry, or as soon as the document no longer takes it
(`token::still_taken`, the checks `verify` makes of the document, now its own
function): looked at when a change touches protocol data (the root, a switch, among
it), and when a session ends on the node itself in a swarm without a registry
(`AppState::session_ended`). No polling: a timer for the expiry, and the changes as
they come. The client reconnects with the token it has then; a refreshed token is a
new one, so a stream lasts a token's lifetime at most (12 hours by default).
`futures` is a dependency of every build now (for `take_until`), not only of libp2p's
and Tor's.
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Logging out of the dashboard (`DELETE /auth/session`) only cleared the cookie: the
session's tokens stayed taken until they expired, by every node. Ending them took
`POST /auth/logout`, which ends all of a user's sessions.
Now `DELETE /auth/session` ends the session of the token it comes with (the cookie, or
a bearer token): where the swarm has a registry, it is recorded as
`_continuum/sessions/<user>/<session>` (`registry::session_path`), its value until when
the session would have lasted, and every node refuses the session's tokens once the
change reaches it (`token::Refused::Ended`): the page's own, its narrow tokens, and one
handed to another member's dashboard, all refreshed from it and keeping its ID. The
rules take the entry from the user itself or one who manages users, as a logout. A
remake's snapshot leaves out entries past that time, a user's map where none is left:
their tokens are expired anyway.
Without a registry the document can't record it: the node ending it refuses the
session's tokens itself (`AppState::ended_sessions`, until it restarts), others take
them until they expire, as a logout there is refused.
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After "log out" the page went to the login page, and the browser's back button brought
it back as it was (kept whole in its history): the map, the peers and the console went
on updating, by the stream it still had open and the subscriptions' token it still
held, though the session had ended (the document box, reading anew, got 401s).
Now leaving for the login page (`toLogin`: logging out, or the login ending) stops the
page's reading first: its stream, its subscriptions, its timers and tokens. And a page
the browser brings back whole (`pageshow`, `persisted`) loads again instead, so it
reads with the session it has now, and without one goes to the login page.
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Going to another member's dashboard showed its login page for a moment: a browser
without a session there was sent from `/admin/dashboard` to `/login` (by
`auth::basic_auth`), which began a session with the token handed over and went on to
the dashboard.
Now the dashboard's page is served without authentication, as the login page is (it
holds nothing: what it shows it reads with the browser's session). Opened with a token
handed over, the page begins the session with it (`POST /auth/session`) before it reads
anything; without a session, `obtainTokens` goes to the login page, as the redirect
did. A request without credentials is refused at once rather than after the 1.5 s
that slow down guessing passwords: nothing is guessed there, and a page without a
session goes to the login page without waiting twice for it.
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The page renewed its token half way through its life by a timer. A timer fires late
where the computer slept or the tab was in the background, by when the token (and the
session cookie, which lives as long) may have ended: the page then fell back to
`POST /auth/login`, which takes a password the browser keeps (basic authentication),
and without one retried every 30 s, logged out without saying so.
Now whether the token is half way through its life is looked at again when the page
shows and every 30 s (`refreshIfDue`, one renewal at a time), so it is renewed while it
still can be, until the login ends (`--session-lifetime`). Where the login ended, or
there is none (400, 401, 403), the page goes to the login page; a node away is tried
again in 30 s. And the page no longer gets in by a password the browser keeps: only
by its session or through a proxy naming the user (`throughProxy`, `login: "header"`).
The node never challenges a browser for a password either (`WWW-Authenticate`, the
browser's prompt): not only on the dashboard's paths and for a page's own requests, but
for any request with `Sec-Fetch-*` or a `Mozilla/…` user agent. curl sends the password
unasked with `-u`, as before.
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A node in focus showed this node's `/peers` entry for it and the links it reports:
what this node knows of it, never what it says of itself, though the page subscribes to
it. Now a subscribed node in focus shows its own figures first (`Node:`), as this
node's are (its `/admin/stats`), then this node's entry for it (`as this node sees it`)
and its links, each a branch. A link in focus shows each end's paths to the other as
that end has them: this node's, and a subscribed node's from its `/peers`.
The page reads them from the node every 2 s while it is in focus (`readFigures`,
`figuresOf`), with its narrow token, which may look at a node as any user with a
capability may; pages of other origins may now call `/admin/stats` and `/peers`
(`cors::open`), as they do a node's links and messages. Where they can't be read, the
box says why.
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A subscribed node's messages come without being written out (their stream leaves the
text out: up to 8 KiB each, 500 at a time), so the figures box said only when, both
ends, type and size of one. Now the node answers for one message by its number,
`GET /admin/dashboard/messages/own/{seq}` (`{"text": …}`, `404` once it isn't kept),
which pages of other origins may call as they do its streams (`cors::open`), and the
page reads it when the message is shown, with its narrow token, and keeps it on the
message. Where it can't be read, the box says why.
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The console said with whom a message went, not how: the message log was noted above
the identity layer (`CountingTransport`), where a message is to or from a node, and the
address it went to (the paths layer picks one, `Paths::send_first`) or came from is
gone. Only the paths layer's own PINGs and PONGs, logged under their addresses, had one.
Now the identity layer notes the node's messages (`MessageLog::set_addressed`), with
the address each went to (`IdentityTransport::send_proven` returns it) or came from;
`CountingTransport` leaves them to it, and still notes them where there is no identity
layer (tests). A console line ends with the transport (the address's scheme, in its
colour on the map, the address in the tooltip), and the figures box shows the address.
A subscribed node's messages carry theirs too, and the map runs every message along
its transport's line, not only the PINGs and PONGs.
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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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A capability's path covered by prefix only, so what is the same at every key of a map
(each node's log filter, say, at `_continuum/local/<id>/log` from the next patch on)
took a capability per key. Now a `*` segment stands for any one key, as it already does
in signed paths and sealed places (`envelope`, `sealed`, which now share one `agree`):
* covering (`Capability::covers`): the pattern no longer than the path, and agreeing
with it segment by segment;
* listings (`reaches`): pattern and path agreeing on the segments both have, so every
key on the way shows, nothing past where the pattern differs;
* narrowing (`Capability::holds`, for a token's limit narrowed again and a refresh's):
at or below, a `*` only under a `*`: a limit naming one key never widens to all.
A `*` first is outside protocol data, so it never covers `_continuum`, as `[]` doesn't.
A key that is `*` itself can't be named alone. Every node judges changes by
capabilities, so all must read them alike: they run the same version.
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Requests weren't logged at all, short of what a handler logs itself. Now a middleware,
outermost on the API (and on a relay-only node's), logs a line per request as web
servers do: method and path (with the query), status, the milliseconds until the answer
began (a stream goes on after), where it came from (the address, or `unix`), and the
user (`-` where none was authenticated). The user comes back on the response:
`basic_auth` puts it there, for a token as for a password or a trusted proxy's header.
At debug, under the target `http` (`RUST_LOG=info,http=debug`, or `PUT /admin/log`):
an open dashboard alone would fill the log at info. With the target off, the request
passes untouched.
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The remake dialog set the kind, its input, the settle time and the switch delay, but not
the replay window or the archive retention. Now each has two fields, epochs and an age,
their defaults as placeholders: both empty sends nothing (the node's defaults), one
given sends that limit alone, as the API reads it; in the body, or for an import in the
query (`replayWindow`, `archiveRetention`). Epochs that aren't a whole number are
refused in the page.
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A key's line was stored as the key alone (`ssh-ed25519 <base64>`), whatever comment it
came with, both from `PUT /auth/keys/<name>` and from `--bootstrap-keys`. Now its
comment is kept after it (`PublicKey::kept_line`), the spaces between its words made
one. The comment checks nothing: every use of a key parses the line, and the parse
reads the key alone.
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A page opened from another node's page takes that page's subscriptions
along; one of them can be this node, another there. The page then
followed this node as a subscribed one too, and showed its messages
twice, from its own log and from the subscription (`→ LLL PING` and
`LLL ← RRR PING`, the same message), on the map as in the console.
The page follows no subscription of its own node: not when it knows
which node it is, and one begun before that stops once it does; its
messages, if any came, are left out.
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The credentials dialog listed a user's keys whole, to add one or
remove one but the last, and any failure replaced the dialog with the
error, the form lost.
* A key is shown short: its type, the first and last four characters
of what tells it apart (an Ed25519 key's base64 after the part all of
them share), its comment; the whole line in its tooltip.
* A key can be edited, its name and its line: saved under the name, a
new name written first and the old one removed.
* A user with a password on this node (`--htpasswd`) may remove its
last key: it logs in by the password. GET /auth/keys says so
(`password`), and DELETE /auth/keys/{id} takes it then; the rules no
longer keep the last key on every node (no other node can tell who
has a password where; under a strict policy the signed entry keeps
one still).
* What fails says why beside where it was asked (the add form, the
edited row, the removed one), which stays as it was, to be set right
and tried again.
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A right press on a node started dragging it, as any press did: the map
took hold of the pointer, so the right-click went to the map and the
node's menu didn't open, and letting go put the node in focus. The
right button now opens the node's menu alone. Its entry for the node's
dashboard is `go to its dashboard`, greyed where the node publishes
none (and on this node's own), its tooltip saying where it goes or why
not.
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Opened by a finger held on an entry, its menu had its top left corner
at the finger, under the hand holding it, a right hand mostly. By
touch it now has its top right corner there; opened by a pointer, its
top left, as before.
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With the entries' menus (1238), editing had three ways in: the
double-click, the `+` on a map's or list's row, and the menu. The
double-click and the `+` go; the menu does all of it. The title,
which stands for the root (its row isn't shown), now takes the
right-click too: its menu adds a key at the top level.
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The document box edited an entry by a double-click and added to a map
or list by the `+` on its row; a key couldn't be renamed, and a list's
`+` always asked for an index.
A right-click on an entry, or a finger held on it half a second, opens
its menu: `Edit value` (as the double-click), `Rename key` for a map's
key, and on a map `Add a key`, on a list `Append an item` or `Insert
an item at…`. Renaming reads the value, writes it under the new key
and deletes the old one (two writes, the value as JSON; a key that
exists already isn't overwritten). Inside a field being edited, and
where an entry offers nothing, the browser's own menu shows.
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A stream's lag in the tooltip of `behind: …` was one figure, from when
a node logged a message to when the page had it: a second and a half
for a node a LAN away said nothing of where it went.
The node now stamps each `messages` event with when it sent it
(`{"sent": …, "messages": […]}`), and the tooltip splits each stream's
lag: how long its batches waited in the node, from logging the first
message to sending the batch (the node's own clock: exact), and how
long they took on the way, from sending to arriving. This node's own
stream is always listed, beside the three slowest.
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The console appended messages as their streams brought them, a
subscribed node's later than this node's by its path, each line with
its node's own clock's time: lines of one moment came apart, and their
times read out of order.
Each message is now listed by when its node logged it, on this node's
clock, as the map runs them (`aheadOf`): one a slower stream brought
late goes in among those of its moment. The time shown is on this
node's clock; a subscribed node's own clock's time is in its tooltip.
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Each node's message stream comes its own way to the page, a subscribed
node's over the network to it: messages logged 16 ms apart on three
nodes ran over a second apart, as their streams arrived.
Messages now run when they went, on this node's clock: each at the
time its node logged it, taken back by how far that node's clock is
ahead of this node's (the map's clock chain, `aheadOf`), a while
behind real time (`replayDelay`): the most any stream lagged in the
last 30 s and a tenth of a second more, shown after the sliders
(`behind: …`), each stream's lag behind the fastest in its tooltip.
The browser's clock is against all streams alike and drops out. A
message known only from its receiver (its sender not subscribed) is
placed at its arrival, starting a crossing before. Messages lagging
more than 10 s (a gap) don't run, nor hold the map behind.
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The node sent its messages to the page every 2 s (`messages` events,
this node's and a subscribed node's), and this node's ran on the map
from its counts, which come with the state: the map showed a message 2
to 4 s after it went, the messages of each 2 s spread evenly over the
next.
The message log now tells those waiting of each message logged
(MessageLog::logged_after), and both streams send what was logged a
tenth of a second after the first of it (MESSAGES_GATHERED): a busy
node about ten events a second, a quiet one each message soon after it
went. The page runs messages as their streams bring them, this node's
from its own log too (with the addresses its PINGs went to), as far
apart as they were sent; more than six on a link and way at once are
shared out by kind over the moment, and after a gap only the last 2 s
run. The counts still give the rates and what was delivered.
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A message between this node and a subscribed one ran from this node's
counts both ways: one the subscribed node sent ran once this node had
counted it received, as it arrived. Each message now runs from its
sender where the page reads the sender (this node's counts, a
subscribed node's messages), so it runs the way it went, also where it
never arrived; only one from a node the page doesn't read runs as it
arrived. The console lists them as before.
Where the page reads both ends of a link, what one sent the other
should count received: a message sent and not received within 5 s
makes the link breathe red once (`breatheLink`), its tooltip saying
how many. Kinds the paths and identity layers count under addresses
are left out, as this node's counts leave them out; a subscribed
node's tick that came short (the latest 500 of more) starts the count
afresh, so what the page didn't see isn't taken as lost.
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Dots and flashes ran straight from sender to receiver, whatever line
the message took: a PING over another transport, drawn as a curved
line beside the one in use, crossed the map off its line.
Each message now runs along the line it went over, as drawn (`route`:
the link's quadratic curve, its control point where renderGraph put
it): a message naming the address it went to (the paths layer's PINGs
and PONGs) over that address's transport's line, any other over the
line in use; a flash's streak bends with it.
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On a dynamic map, links pull toward their lengths against the nodes
pushing each other apart, at one strength. A `pull` slider before the
layout's toggle, shown while dynamic, sets it from a quarter to four
times as hard (2 to its value, once at first), kept in the browser;
the map moves to the new balance smoothly.
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A link was dotted where an end reported no links. Members used to
report their links to every dashboard (LINKS); the page now reads a
member's links only while subscribed to it, so a dotted link said no
more than that its other end isn't subscribed, which the node shows
already (hollow), and most links were dotted. The style and its
legend entry go; the link's tooltip says when one end alone reports
it.
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The map's dots and the console coloured six kinds of message; PROBE,
PRUNE/GRAFT, NEIGHBOUR and REFUSALS were drawn in the text colour and
missing from the legend. Each kind (`traffic`'s counters) now has a
colour, and the legend names them all, saying which messages a kind
stands for where its name doesn't.
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Signatures sent on their own (SIGNATURES, every second, to each peer
not sent them yet) flooded every link: a signature made after its
change left, or one that came with changes, went to every neighbour,
whether or not it got the change along with its signature elsewhere.
With every change of a node signed as it leaves (1217) and signatures
going where their changes go (1218), none is left for them to carry:
the message, its task and its traffic counter go (wire version 46).
Signatures waiting for their changes are offered as before when sync
messages bring them, and the changes waiting for signatures judged
again with the next batch.
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A write every node would refuse is rolled back by forking the document
at the heads before it, under the write lock, at a cost that grows with
the document's history. A user could ask for such writes in a loop.
Count each user's refused writes over the last minute. Past
--refused-writes-per-minute (default 10), its writes are answered 429
without being tried, until the oldest refusal leaves the minute.
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Review 2, N9: the API checked a write's capability on the path asked
(servers/list/3/name), the rules on the list it is in (servers/list):
a user whose capability lay inside a list had every such write pass the
API and refused by the node's own judgement (403, after rolling the
document back).
inspect::placed places a write's path in the document by the rule the
inspector places operations by (Place::child: cut after the first list
or text on the way), and the store's writes check capabilities there.
One rule for both; a test checks placed against the paths the inspector
finds in the change such a write makes.
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The user's name, top right, opens a menu:
* "credentials…": the user's keys (GET /auth/keys), one added with its
.pub line or removed but the last (/auth/keys/{id}); under a strict
policy, how to sign them anew (continuum-signed key-add, key-remove);
and where its password is: each node's --htpasswd, its operator's.
* "log out": this browser's session ends. Where the page got in by
what it can't end (the browser's password, the proxy's), it is greyed
(aria-disabled, not disabled, so a click still lands), its tooltip
saying how to log out, and a click says so in a dialog.
The log out button and the text beside the name from 1165 go into it.
Checked in Chromium against stubbed endpoints: the menu, both log out
cases, the credentials dialog, no errors, nothing the content policy
refuses.
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A user managing its own keys (1168) could remove the last, and then
neither sign nor log in by key. It can't now: DELETE /auth/keys/{id}
of the last answers 409, the rules take a user's change of its own keys
only with one left after it, and under a strict policy its own entry
signed only with one key at least. One who may manage users still may.
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What is meant for browsers logs in on its page (/login), with the
passwords of --htpasswd; basic authentication's challenge stays for the
API, so curl -u keeps working. 1164 kept it from a page's own requests;
now nothing under /admin/dashboard is challenged either, whatever the
request: a browser opening the page without a user is sent to /login,
anything else answered 401 without a challenge.
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A node told (REFUSALS) that it holds a change the swarm's rules refuse,
and whose own rules refuse it too, dropped it and everything built on
it on one peer's word, however much that was; its own writes among them
went to the quarantine, the others' nowhere.
* A drop taking more than 100 changes, or more than ten and a tenth of
the document, now
waits until a second member names the same change: the node's rules
and one peer's word could both be off. Logged as an error, counted in
/admin/stats (sync.dropsHeld).
* The others' changes dropped are listed with the refused (GET
/admin/refused, "taken unjudged, dropped"), for operators to see.
The cheap half of asking the others (future-work.md, Telling a
malicious change from a wrong policy).
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Only a user who may manage users could change a user's keys: a user
couldn't add a new laptop's key, or remove a lost one.
A user now manages its own keys, whatever else it may do:
* GET /auth/keys: its keys, its entry, and the envelope holding it
under a strict policy (`signed`), to sign against.
* PUT /auth/keys/{id} with an authorized_keys line, DELETE
/auth/keys/{id}: one change, as the user. The rules take a write of
_continuum/users/<name>/keys/… from the user it names.
* Under a strict policy, the user signs its entry with only its keys
changed, with a key it holds already (envelope::check takes that from
the user itself), PUT to its own entry even without write on the
registry; continuum-signed key-add and key-remove do so.
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Review 6: a node remembers the challenges used until they expire, 10 000
at most, and refused every login by key once full. One user holding a
key could make 10 000 logins within five minutes and keep everyone else
out.
A user may now log in by key at most --key-logins-per-user times (100)
on a node within a challenge's lifetime, past which that user waits and
others don't; the 10 000 stay as the cap for all users together. The
lifetime, five minutes until now, is --challenge-lifetime.
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The dashboard had no way to log out; only the login page did.
It now shows the user beside the connection, and "log out" where the
page got in by its session: that ends this browser's session (DELETE
/auth/session), other sessions of the user going on, and opens the
login page. Where it got in by what it can't end, the browser's
password or the proxy's, it says so instead (the token answer now
names `login`, how the user proved it). After logging out, a page
still let in by the browser's password says so too.
A list of a user's sessions, to end one by one, is in future-work.md.
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Opening a dashboard through its login page showed a 401 on /auth/login
and the browser's password prompt. The page asked for its token by the
browser's password first (POST /auth/login), with none to send, and the
401 carried a Basic challenge, which a browser answers with its prompt.
The page now asks by its session first (POST /auth/session), then by
the browser's password or the proxy's. And a 401 to a page's own
requests (Sec-Fetch-Dest: empty: fetch, EventSource) carries no
challenge: a page has its login of its own. Navigations and clients
without the header (curl) are still challenged.
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Review finding 12, browsers: the session cookie had no Secure flag.
Behind a TLS proxy, the token it carries went over plain HTTP if
someone typed http://.
POST /auth/session now sets Secure when the request came over TLS, as
the proxy says (X-Forwarded-Proto, or Forwarded's proto, of the first
hop). A client saying so itself only keeps its own cookie off plain
HTTP. operations.md's nginx example sets the header.
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Review finding 12, browsers: the dashboard holds a bearer token in
memory and edits the document, but had no content security policy and
could be framed by any page of the same site (another port on the same
host, anything sharing a domain behind a proxy), acting with its user's
token.
The dashboard and the login page now come with a policy that runs only
their own inline script (by its hash, computed when first served),
loads nothing from elsewhere, and lets no page frame them
(frame-ancestors 'none', X-Frame-Options DENY). Fetches stay open to
any origin, as the members' dashboards are wherever the member list
says.
The browser check (check.js) loads the page from a file, without the
header, so the policy wants one look in a browser.
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Review 3.1, part of finding 12: a signed value's payload bound path,
user, time and prev, but not the swarm. A user with the same name and
key in two swarms could have an envelope replayed from one into the
other, wherever the path holds no envelope yet (prev "").
The payload now names the swarm (`swarm`), and a node takes an envelope
only for its own. /auth/whoami says the swarm, and continuum-signed and
the example in api.md sign it. Wire version 44: nodes before this
refuse such envelopes, and those after refuse the old ones.
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