samiandClaude Sonnet 5
d4ad48d494
Pure functions only, per AGENT-CORE.md's build order: no I/O, no JSON, no SQL,
no notion of the wire Rule type — DAEMON decodes its own stored/wire
representation into these plain structs and calls in.
- rules/filename.hpp: sanitize_filename() turns a raw candidate (from
net::parse_content_disposition or net::url_filename — neither is
filesystem-safe by design; both headers say so and point here) into one
safe to create on ext4/APFS/NTFS: strips separators and control bytes,
folds NTFS-illegal characters, neutralizes reserved Windows device names,
clamps length on a UTF-8 boundary. Total on hostile input; never empty.
Not the path-traversal security boundary — that's daemon/fs/safepath,
downstream of this and the one that actually matters adversarially.
- rules/collision.hpp: resolve_collision() finds the next free name
Explorer/Finder-style ("name (1).ext", ...) given an existence predicate,
or returns the desired name unchanged under an overwrite policy. Never
fabricates a guaranteed-unique name past its attempt bound — hands back
the last candidate tried rather than hiding a persistent collision.
- rules/match.hpp: match_rules() is the evaluation half of
contracts/schema/types/Rule.schema.json — priority order, first rule
whose present match clauses (extensions/mimeTypes/host & url glob/size
bounds) all hold, wins; a size clause never matches speculatively before
the probe fills in size_bytes. glob_match() is the iterative (not
recursive — bounded work on an all-'*' pattern) matcher both host_pattern
and url_pattern use.
Every header compiles standalone; tests (39 cases) pass under ASan+UBSan and
TSan. core/include/vdm/README.md documents the new public surface.
Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Q3QrF7rCt21bkAjt9BCDFQ
Owner: lane CORE. See ../docs/agents/AGENT-CORE.md and ../docs/04-engine-design.md. No JSON, no SQL, no Qt, no RPC in this tree.