mirror of
https://github.com/ipfs/kubo.git
synced 2026-02-23 03:17:43 +08:00
97bc89d560
This resolve function assumed that all paths were of the same type (ipfs, ipld, etc.). The CoreAPI does a much better job.
53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
package resolve
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/ipfs/go-path"
|
|
|
|
"github.com/ipfs/go-ipfs/namesys"
|
|
)
|
|
|
|
// ErrNoNamesys is an explicit error for when an IPFS node doesn't
|
|
// (yet) have a name system
|
|
var ErrNoNamesys = errors.New(
|
|
"core/resolve: no Namesys on IpfsNode - can't resolve ipns entry")
|
|
|
|
// ResolveIPNS resolves /ipns paths
|
|
func ResolveIPNS(ctx context.Context, nsys namesys.NameSystem, p path.Path) (path.Path, error) {
|
|
if strings.HasPrefix(p.String(), "/ipns/") {
|
|
// TODO(cryptix): we should be able to query the local cache for the path
|
|
if nsys == nil {
|
|
return "", ErrNoNamesys
|
|
}
|
|
|
|
seg := p.Segments()
|
|
|
|
if len(seg) < 2 || seg[1] == "" { // just "/<protocol/>" without further segments
|
|
err := fmt.Errorf("invalid path %q: ipns path missing IPNS ID", p)
|
|
return "", err
|
|
}
|
|
|
|
extensions := seg[2:]
|
|
resolvable, err := path.FromSegments("/", seg[0], seg[1])
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
respath, err := nsys.Resolve(ctx, resolvable.String())
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
segments := append(respath.Segments(), extensions...)
|
|
p, err = path.FromSegments("/", segments...)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
}
|
|
return p, nil
|
|
}
|