6924d1ad81
See https://github.com/ooni/probe/issues/2112 for context. While there, run `go fix -fix buildtag ./...`
53 lines
1.4 KiB
Go
53 lines
1.4 KiB
Go
//go:build ooni_psiphon_config
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package engine
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import (
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"bytes"
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"context"
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_ "embed"
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"filippo.io/age"
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"github.com/ooni/probe-cli/v3/internal/netxlite"
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)
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//go:embed psiphon-config.json.age
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var psiphonConfigJSONAge []byte
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//go:embed psiphon-config.key
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var psiphonConfigSecretKey string
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// sessionTunnelEarlySession is the early session that we pass
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// to tunnel.Start to fetch the Psiphon configuration.
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type sessionTunnelEarlySession struct{}
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// FetchPsiphonConfig decrypts psiphonConfigJSONAge using
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// filippo.io/age _and_ psiphonConfigSecretKey.
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func (s *sessionTunnelEarlySession) FetchPsiphonConfig(ctx context.Context) ([]byte, error) {
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key := "AGE-SECRET-KEY-1" + psiphonConfigSecretKey
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identity, err := age.ParseX25519Identity(key)
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if err != nil {
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return nil, err
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}
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input := bytes.NewReader(psiphonConfigJSONAge)
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output, err := age.Decrypt(input, identity)
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if err != nil {
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return nil, err
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}
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return netxlite.ReadAllContext(ctx, output)
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}
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// FetchPsiphonConfig decrypts psiphonConfigJSONAge using
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// filippo.io/age _and_ psiphonConfigSecretKey.
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func (s *Session) FetchPsiphonConfig(ctx context.Context) ([]byte, error) {
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child := &sessionTunnelEarlySession{}
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return child.FetchPsiphonConfig(ctx)
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}
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// CheckEmbeddedPsiphonConfig checks whether we can load psiphon's config
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func CheckEmbeddedPsiphonConfig() error {
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child := &sessionTunnelEarlySession{}
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_, err := child.FetchPsiphonConfig(context.Background())
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return err
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}
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