## Summary
- ipv6rwc: validate IPv6 packet length before reading the version nibble
in writePC
- config: guard the BOM check against configs shorter than two bytes
- admin: replace unchecked net.Error type assertion with errors.As;
tolerate empty unix socket paths
- multicast: log and continue on ReadFrom errors instead of panicking;
use checked type assertion on UDPAddr
- mobile: reject negative length in SendBuffer; nil-check AddrForKey in
GetPeersJSON and SummaryForConfig
- admin/get{tree,paths,sessions}: skip entries when AddrForKey returns
nil instead of dereferencing
- core/nodeinfo: validate the requested public key length in
nodeInfoAdminHandler, matching the other proto handlers
- add regression tests for the panic paths
## Why
A handful of error paths and platform-API edge cases reach fixed-size
indexing or unchecked type assertions before any length validation.
Most are reachable only locally (an empty config piped to -useconf,
a 0-byte packet from the mobile bindings, an admin DialTimeout error
that doesn't satisfy net.Error on some platforms), but they crash the
daemon hard. Have them return errors or skip the entry instead.
## Testing
- go test ./...
- go vet ./...
This PR updates Ironwood to include the new RTT-based link costing and
updates `yggdrasilctl` to report the cost in `getPeers`.
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
* Allow setting link priorities
* Fix a bug
* Allow setting priority on listeners and multicast interfaces
* Update `yggdrasilctl`
* Update to Arceliar/ironwood#5
* Link refactoring
* More refactoring
* More tweaking
* Cleaner shutdowns, UNIX socket support, more tweaks
* Actorise links, remove mutex
* SOCKS support
* Do not exit on multicast errors (mobile)
* Consistency with cmd/yggdrasil/main.go
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
