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Off-the-record profile, JavaScript off, deny-by-default interceptor, and a
page subclass that hands link clicks to the system browser so a message can
never navigate the pane.
Honours the obligation task 5 recorded: the interceptor trusts exactly one
qtmaildir: URL and fails closed otherwise, so setHtml() and setDocumentUrl()
must agree or the pane renders nothing. Rather than pairing those calls at
each site, every load goes through one setDocument() and the URL comes from
a single documentUrl() accessor. Verified against the real interceptor that
this URL is allowed while siblings, subpaths, remote and file: are not.
Three fixes against the drafted version:
- showError() called setHtml() with a base URL but never setDocumentUrl(),
so an error card would have rendered blank. Now impossible to repeat.
- clear() and showError() left the previous thread's inline parts in the
scheme handler and its cids in the interceptor. Both now empty the policy,
so no thread's parts outlive it.
- MessagePage trusted the whole qtmaildir: scheme for typed navigations,
which is the same blanket-trust mistake task 5 removed from the
interceptor. It now matches the exact document URL.
The parts-flattening is extracted into buildThreadCidMap() so it can be
tested without a live profile, and a cidPrefix containing '!' is sanitized
rather than trusted, since Q_ASSERT is compiled out in release and this map
decides which bytes a message can name. The sanitizer escapes '_' before
replacing '!', because a plain replace would map "m0!x" and "m0_x" onto one
key and merge two messages, which is the very collision the namespacing
exists to prevent. Mutation-verified: the naive replace fails the
distinctness test, and dropping the sanitizer trips the assert.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Runs the configured sync script through QProcess, merging stdout and
stderr into one log so a failing mbsync run has something to show. The
script is never run through a shell: the command is a config value, and
splitCommand keeps its arguments literal.
Two fixes against the drafted version:
- start() no longer calls waitForStarted(). It blocked the UI thread for
up to five seconds, which contradicts the spec's requirement that the UI
stay usable during sync, and it swallowed launch failures into a bare
false return. A missing script now surfaces asynchronously through
errorOccurred as finished(false, -1) with an explanatory log line, so
the spinner cannot hang with nothing to explain it.
- Removed a double-emit guard I had added on the assumption that QProcess
follows errorOccurred(FailedToStart) with finished(). Verified it does
not: FailedToStart is emitted instead of finished, never before it. The
guard was dead state and the comment justifying it was wrong.
Also corrects the sync interval throughout: the user's cron runs every 10
minutes, not hourly. The shorter interval strengthens the flock rationale
rather than weakening it, since collisions with a manual sync are that
much more likely.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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QAbstractTableModel over query results, appended in batches so a large
query paints its first screenful immediately. Tag changes apply locally
for optimistic UI; reverting a failed write means calling applyTagChange
again with added and removed swapped, which the round-trip test pins.
Two additions to the drafted version:
- A ThreadIdRole, so a view's QModelIndex maps back to the thread id the
worker speaks without every caller reaching around the model.
- data() checks its own row and column bounds. Qt will not hand out an
out-of-range index and invalidates persistent ones on reset, so this is
unreachable defence rather than a live path; the test says so instead of
pretending to cover it.
Verified by mutation that the empty-batch guard, the ThreadIdRole, and the
full-row dataChanged range each fail exactly one test when removed.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Owns the only notmuch database handle. Queries run read-only and emit
threads in batches of 200 with a generation counter so the UI can discard
superseded results. Tag mutation closes the read-only handle, opens
read-write, applies, and closes, holding the process-wide write lock for
milliseconds rather than blocking a concurrent `notmuch new`.
Tested against a throwaway database built in a QTemporaryDir, superseding
the spec's original "no unit test" position: applyTags is the only code
here that writes to a notmuch index. The fixture never touches ~/Mail or
~/.notmuch-config.
Two fixes against the drafted implementation, both caught by mutating the
code and confirming exactly one test failed:
- loadThread conflated "no query given" with "query matched nothing in
this thread", so filtering a thread down to zero matches rendered every
message expanded. Tracked with an explicit haveMatchSet flag.
- applyTags now documents why a stale message id must skip rather than
abort: notmuch_database_find_message reports SUCCESS with a null message
for an unknown id, and the live ids alongside it still need tagging.
Note for fixture authors: notmuch synchronizes maildir flags with tags at
index time, so a file named `...:2,S` is indexed without the unread tag no
matter what [new] tags requests. Unread fixture messages go in new/.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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ThreadSummary, MessageRef, and TagChange are plain-value structs that
carry query results across the worker/UI thread boundary via queued
signals. NmHandle<T, Destroy> wraps libnotmuch's C handles (query,
threads, messages, thread, message, tags) so early returns in the
query paths can't leak.
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The cid: namespacing scheme (cid:<prefix>!<id>) is only unambiguous
because the prefix half is guaranteed free of '!': the first '!' in the
result is always the separator, so an attacker-controlled Content-ID
containing '!' only extends the id half rather than colliding with a
different prefix. That invariant previously existed only as a comment.
Add Q_ASSERT_X at both independent call sites that perform this
concatenation (CidSchemeHandler::namespacedKey and
HtmlBuilder::namespaceCids) so a future prefix generator that violates it
traps in debug builds, per Task 5's precedent of not letting one unit's
correctness depend silently on another's future behaviour. Since
Q_ASSERT compiles out in release, pin the property that actually matters
release builds too test: distinct (prefix, id) pairs across a documented
"m<index>" prefix set and hostile Content-IDs (containing '!', percent-
encoded '!', empty, leading/trailing '!') never collide, and the key
always splits at its first '!' back to the exact original prefix.
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HtmlBuilder renders parsed messages (and whole threads, as one document,
so newsletter threads don't spawn one Chromium process per message) into
the HTML string the web view loads. Plain text is escaped and quote lines
marked; the cid: rewrite is namespaced per message ("<prefix>!<id>") so
two thread messages sharing a Content-ID don't collide.
Hardened namespaceCids beyond the initial sketch after attacking it:
handles unquoted cid: attribute values, background=/poster= (not just
src/href), and CSS url(cid:...) in both style="" attributes and <style>
blocks, all case-insensitively. Replaced the greedy [^"']+ capture with
per-quote-style alternation so two cid: refs on one line can't bleed into
each other.
CidSchemeHandler serves cid: requests from the thread's inline-parts map,
keyed by the same namespaced string, replaced wholesale per thread.
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Whole-scheme allow meant a hostile message body could reference any
qtmaildir: URL (e.g. <img src="qtmaildir://other">) and have it pass,
with safety depending entirely on Task 11's still-unwritten scheme
handler. Add setDocumentUrl() and require an exact QUrl match; deny
all qtmaildir: URLs when it is unset (fail closed). Document URL
survives resetForNewMessage() since it is a property of the view, not
of a message.
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Attachment::saveTo()'s escape guard compared paths with a bare
QString::startsWith(), which is not a path-boundary test: "/tmp/safe-evil"
textually starts with "/tmp/safe", so a sibling directory whose name merely
extends the target's name would incorrectly pass as contained within it.
Extract the check into Attachment::isPathInsideDirectory(), comparing
QDir::cleanPath()'d absolute paths and requiring an exact match or a prefix
ending at a '/' boundary. Not exploitable today since safeFilename() always
reduces the name to a bare basename before saveTo() builds the target, so
the guard is unreachable via saveTo()'s public interface; comments on both
now say so plainly instead of implying it is currently load-bearing.
Add pathInsideDirectoryRejectsSiblingPrefix, testing the guard directly
(independent of safeFilename(), which would mask a broken guard by never
producing an escaping path), and safeFilenameStripsPathComponents, testing
the sanitiser that actually stops traversal today.
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Accounts use [account.work] rather than [account/work]: QSettings' INI
backend treats "/" as its own hierarchical group separator, so a literal
slash in a section header parses as a nested group and trips
QSettings::FormatError, silently breaking childGroups() enumeration. A
dot carries no such meaning and keeps the format flat.
Saved-query order is alphabetical (QSettings::childKeys() sorts), not
file order; documented in code and tests rather than left to a false
assumption.
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loadOverrides() inserted straight into m_bindings, so two override
lines that normalize to the same QKeySequence (e.g. "y" and "Y", both
"Y" per QKeySequence) silently overwrote each other with zero warning,
contradicting the "a typo cannot bind silently" contract on
knownActions().
Track sequences seen within the current override pass separately from
m_bindings (which already holds the defaults) so overriding a default
key stays silent, but two colliding override lines produce one warning
naming both actions.
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Maps key sequences to action name strings, with hardcoded vim-style
defaults and QSettings-based [keys] overrides. Unknown actions and
unparseable sequences are collected as warnings rather than treated
as fatal, so a typo in the config cannot silently misbind or crash.
Note: QKeySequence::fromString() on Qt 6.11 does not return an empty
sequence for unparseable input (e.g. "NotAKey++") -- it returns a
non-empty sequence whose toString() is empty. Detection uses that
instead of isEmpty().
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