beginnings of an http gateway/api

cmd/ipfs/ipfs.go

@@ -35,6 +35,7 @@ Tool commands:
 Advanced Commands:
 
     mount         Mount an ipfs read-only mountpoint.
+    serve         Serve an http gateway into ipfs.
 
 Use "ipfs help <command>" for more information about a command.
 `,
@@ -49,6 +50,7 @@ Use "ipfs help <command>" for more information about a command.
 		cmdIpfsCommands,
 		cmdIpfsMount,
 		cmdIpfsInit,
+		cmdIpfsServe,
 	},
 	Flag: *flag.NewFlagSet("ipfs", flag.ExitOnError),
 }

cmd/ipfs/serve.go

+package main
+
+import (
+	"github.com/gonuts/flag"
+	"github.com/jbenet/commander"
+	h "github.com/jbenet/go-ipfs/http"
+)
+
+var cmdIpfsServe = &commander.Command{
+	UsageLine: "serve",
+	Short:     "Serve an HTTP API",
+	Long:      `ipfs serve - Serve an http gateway into ipfs.`,
+	Run:       serveCmd,
+	Flag:      *flag.NewFlagSet("ipfs-serve", flag.ExitOnError),
+}
+
+func serveCmd(c *commander.Command, _ []string) error {
+	n, err := localNode()
+	if err != nil {
+		return err
+	}
+
+	return h.Serve("127.0.0.1", 80, n)
+}

http/http.go

+package http
+
+import (
+	"fmt"
+	"github.com/gorilla/mux"
+	core "github.com/jbenet/go-ipfs/core"
+	"net/http"
+	"strconv"
+)
+
+type ipfsHandler struct {
+	node *core.IpfsNode
+}
+
+func (i *ipfsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	path := r.URL.Path
+
+	nd, err := i.node.Resolver.ResolvePath(path)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	fmt.Fprintf(w, "%s", nd.Data)
+}
+
+func Serve(host string, port uint16, node *core.IpfsNode) error {
+	r := mux.NewRouter()
+	r.PathPrefix("/").Handler(&ipfsHandler{node}).Methods("GET")
+	http.Handle("/", r)
+
+	address := host + ":" + strconv.FormatUint(uint64(port), 10)
+	fmt.Printf("Serving on %s\n", address)
+
+	return http.ListenAndServe(address, nil)
+}