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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| package coreapi | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/base64" | ||
| "errors" | ||
|
|
||
| "github.com/ipfs/go-path" | ||
| peer "github.com/libp2p/go-libp2p/core/peer" | ||
| "github.com/libp2p/go-libp2p/core/routing" | ||
| ) | ||
|
|
||
| type RoutingAPI CoreAPI | ||
|
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| func (r *RoutingAPI) Get(ctx context.Context, key string) ([]byte, error) { | ||
| dhtKey, err := ensureIPNSKey(key) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| ctx, cancel := context.WithCancel(ctx) | ||
| ctx, events := routing.RegisterForQueryEvents(ctx) | ||
|
|
||
| var getErr error | ||
|
|
||
| go func() { | ||
| defer cancel() | ||
| var val []byte | ||
| val, getErr = r.routing.GetValue(ctx, dhtKey) | ||
| if getErr != nil { | ||
| routing.PublishQueryEvent(ctx, &routing.QueryEvent{ | ||
| Type: routing.QueryError, | ||
| Extra: getErr.Error(), | ||
| }) | ||
| } else { | ||
| routing.PublishQueryEvent(ctx, &routing.QueryEvent{ | ||
| Type: routing.Value, | ||
| Extra: base64.StdEncoding.EncodeToString(val), | ||
| }) | ||
| } | ||
| }() | ||
|
|
||
| for e := range events { | ||
| if e.Type == routing.Value { | ||
| return []byte(e.Extra), nil | ||
| } | ||
| } | ||
|
|
||
| if err := ctx.Err(); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| return nil, errors.New("key not found") | ||
| } | ||
|
|
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| // Shamelessly (mostly) copied from commands/routing.go | ||
| func ensureIPNSKey(s string) (string, error) { | ||
| parts := path.SplitList(s) | ||
| if len(parts) != 3 || | ||
| parts[0] != "" || | ||
| parts[1] != "ipns" { | ||
| return "", errors.New("invalid key") | ||
| } | ||
|
|
||
| k, err := peer.Decode(parts[2]) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| return path.Join(append(parts[:2], string(k))), nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| package corehttp | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "fmt" | ||
| "net/http" | ||
| "strings" | ||
| "time" | ||
|
|
||
| path "github.com/ipfs/go-path" | ||
| ipath "github.com/ipfs/interface-go-ipfs-core/path" | ||
| "go.uber.org/zap" | ||
| ) | ||
|
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| func (i *gatewayHandler) serveIpnsRecord(ctx context.Context, w http.ResponseWriter, r *http.Request, contentPath ipath.Path, begin time.Time, logger *zap.SugaredLogger) { | ||
| if contentPath.Namespace() != "ipns" { | ||
| err := fmt.Errorf("%s is not an IPNS link", contentPath.String()) | ||
| webError(w, err.Error(), err, http.StatusBadRequest) | ||
| return | ||
| } | ||
|
|
||
| key := contentPath.String() | ||
| key = strings.TrimSuffix(key, "/") | ||
| if strings.Count(key, "/") > 2 { | ||
| err := errors.New("cannot find ipns key for subpath") | ||
| webError(w, err.Error(), err, http.StatusBadRequest) | ||
| return | ||
| } | ||
|
|
||
| record, err := i.api.Routing().Get(ctx, key) | ||
| if err != nil { | ||
| webError(w, err.Error(), err, http.StatusInternalServerError) | ||
| return | ||
| } | ||
|
|
||
| // Set Content-Disposition | ||
| var name string | ||
| if urlFilename := r.URL.Query().Get("filename"); urlFilename != "" { | ||
| name = urlFilename | ||
| } else { | ||
| name = path.SplitList(key)[2] + ".ipns-record" | ||
| } | ||
| setContentDispositionHeader(w, name, "attachment") | ||
|
|
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| w.Header().Set("Content-Type", "application/vnd.ipfs.ipns-record") | ||
| w.Header().Set("X-Content-Type-Options", "nosniff") | ||
|
|
||
| _, _ = w.Write(record) | ||
| } |
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