unarr/internal/engine/validate.go
Deivid Soto 7b78d0b778 fix(cors): allow play from .to / staging / onion mirrors
Daemon CORS allowlist was hardcoded to torrentclaw.com + localhost. Browsers
playing from any other official mirror (.to, onion, www., staging.) received
200 + body from the daemon's HLS server but no Access-Control-Allow-Origin
header, so the response was dropped client-side. Probe loop treated every
candidate as a failure and surfaced "No se puede conectar con tu agente
— 404 todos los canales" even though the tunnel + ffmpeg were healthy.

Static baseline now includes the full known mirror set (.com / www / app /
staging / .to / www.to / built-in onion). At startup the daemon also fetches
/api/mirrors with IPFS fallback and merges the live origins, so a future
mirror addition does not require a CLI rebuild.
2026-05-27 10:06:54 +02:00

63 lines
2.8 KiB
Go

// Package engine — validate.go centralises input validators used by the
// stream/HLS HTTP handlers and the daemon glue. Keep new validators in this
// file so a future reviewer can audit the trust boundary in one place.
package engine
import "regexp"
// validSessionID restricts session IDs to characters safe for use as a single
// filesystem path component. Server-issued UUIDs and hex strings match this;
// anything containing slashes, dots, or path separators is rejected so a
// compromised or buggy server cannot escape hlsTmpDirRoot via os.MkdirAll.
var validSessionID = regexp.MustCompile(`^[a-zA-Z0-9_-]{1,128}$`)
// defaultCORSAllowedOrigins is the baseline of browser origins that may
// XHR-probe `/health` and friends on the local daemon. Production hosts are
// hardcoded; localhost on the dev port used by torrentclaw-web is included
// so dev builds work without extra configuration. Operators may add more
// origins via the [downloads] cors_extra_origins TOML key.
//
// The dev port matches `next dev -p 3030` in torrentclaw-web/package.json.
// 127.0.0.1 is listed in addition to localhost because some browsers treat
// them as distinct origins for CORS.
//
// Mirrors (`.to`, `staging.torrentclaw.com`, `www.`) are listed so a user
// playing from any official mirror succeeds the HEAD probe; without these
// the browser drops the response for "missing ACAO" and the player reports
// "404 todos los canales" even though the daemon returned 200.
//
// Note: media tags (<video src>, <audio src>) do not send the Origin
// header so they are not gated by CORS at all; this allowlist only
// affects fetch()/XHR.
var defaultCORSAllowedOrigins = []string{
"https://torrentclaw.com",
"https://www.torrentclaw.com",
"https://app.torrentclaw.com",
"https://staging.torrentclaw.com",
"https://torrentclaw.to",
"https://www.torrentclaw.to",
// Tor mirror — Tor Browser sends `Origin: http://<addr>.onion` (plain
// http, no port). Mirror address is the BUILT_IN_ONION constant from
// torrentclaw-web/src/lib/mirrors-config.ts; rotates rarely, kept in
// sync by hand. Daemon also dynamically merges /api/mirrors at startup
// (see daemon.go) so a new key doesn't need a CLI rebuild.
"http://torrentf3aifidcsaaanmnmuhv2s53r6hqsl3zkmfidiaxainkeqk5id.onion",
"http://localhost:3030",
"http://127.0.0.1:3030",
}
// buildCORSAllowlist merges the default origins with any extras supplied by
// the operator. Returned map is intended to be installed once at Listen()
// and treated as read-only afterwards.
func buildCORSAllowlist(extra []string) map[string]struct{} {
out := make(map[string]struct{}, len(defaultCORSAllowedOrigins)+len(extra))
for _, o := range defaultCORSAllowedOrigins {
out[o] = struct{}{}
}
for _, o := range extra {
if o != "" {
out[o] = struct{}{}
}
}
return out
}