ooni-probe-cli/internal/engine/geolocate/resolverlookup.go
Simone Basso d57c78bc71
chore: merge probe-engine into probe-cli (#201)
This is how I did it:

1. `git clone https://github.com/ooni/probe-engine internal/engine`

2. ```
(cd internal/engine && git describe --tags)
v0.23.0
```

3. `nvim go.mod` (merging `go.mod` with `internal/engine/go.mod`

4. `rm -rf internal/.git internal/engine/go.{mod,sum}`

5. `git add internal/engine`

6. `find . -type f -name \*.go -exec sed -i 's@/ooni/probe-engine@/ooni/probe-cli/v3/internal/engine@g' {} \;`

7. `go build ./...` (passes)

8. `go test -race ./...` (temporary failure on RiseupVPN)

9. `go mod tidy`

10. this commit message

Once this piece of work is done, we can build a new version of `ooniprobe` that
is using `internal/engine` directly. We need to do more work to ensure all the
other functionality in `probe-engine` (e.g. making mobile packages) are still WAI.

Part of https://github.com/ooni/probe/issues/1335
2021-02-02 12:05:47 +01:00

36 lines
796 B
Go

package geolocate
import (
"context"
"errors"
"net"
)
var (
// ErrNoIPAddressReturned indicates that no IP address was
// returned by a specific DNS resolver.
ErrNoIPAddressReturned = errors.New("geolocate: no IP address returned")
)
type dnsResolver interface {
LookupHost(ctx context.Context, host string) (addrs []string, err error)
}
type resolverLookupClient struct{}
func (rlc resolverLookupClient) do(ctx context.Context, r dnsResolver) (string, error) {
var ips []string
ips, err := r.LookupHost(ctx, "whoami.akamai.net")
if err != nil {
return "", err
}
if len(ips) < 1 {
return "", ErrNoIPAddressReturned
}
return ips[0], nil
}
func (rlc resolverLookupClient) LookupResolverIP(ctx context.Context) (ip string, err error) {
return rlc.do(ctx, &net.Resolver{})
}