Address c.r. and additional tweaks.

License: MIT
Signed-off-by: Kevin Atkinson <k@kevina.org>

core/commands/urlstore.go

@@ -26,7 +26,7 @@ var urlStoreCmd = &cmds.Command{
 
 var urlAdd = &cmds.Command{
 	Helptext: cmdkit.HelpText{
-		Tagline: "Add URLs via urlstore.",
+		Tagline: "Add URL via urlstore.",
 		LongDescription: `
 Add URLs to ipfs without storing the data locally.
 
@@ -57,6 +57,11 @@ time.
 			return
 		}
 
+		if !filestore.IsURL(url) {
+			res.SetError(fmt.Errorf("unsupported url syntax: %s", url), cmdkit.ErrNormal)
+			return
+		}
+
 		cfg, err := n.Repo.Config()
 		if err != nil {
 			res.SetError(err, cmdkit.ErrNormal)

filestore/filestore_test.go

@@ -171,7 +171,7 @@ func TestIsURL(t *testing.T) {
 	if !IsURL("https://www.example.com") {
 		t.Fatal("IsURL failed: https://www.example.com")
 	}
-	if IsURL("adir/afile") {
+	if IsURL("adir/afile") || IsURL("http:/ /afile") || IsURL("http:/a/file") {
 		t.Fatal("IsURL recognized non-url")
 	}
 }

filestore/fsrefstore.go

@@ -314,7 +314,8 @@ func (f *FileManager) PutMany(bs []*posinfo.FilestoreNode) error {
 }
 
 // IsURL returns true if the string represents a valid URL that the
-// urlstore can handle.
+// urlstore can handle.  More specifically it returns true if a string
+// begins with 'http://' or 'https://'.
 func IsURL(str string) bool {
 	return (len(str) > 7 && str[0] == 'h' && str[1] == 't' && str[2] == 't' && str[3] == 'p') &&
 		((len(str) > 8 && str[4] == 's' && str[5] == ':' && str[6] == '/' && str[7] == '/') ||

importer/helpers/dagbuilder.go

@@ -49,6 +49,9 @@ type DagBuilderParams struct {
 	// filestore adds
 	NoCopy bool
 
+	// URL if non-empty (and NoCopy is also true) indicates that the
+	// file will not be stored in the datastore but instead retrieved
+	// from this location via the urlstore.
 	URL string
 }
 
@@ -68,7 +71,7 @@ func (dbp *DagBuilderParams) New(spl chunker.Splitter) *DagBuilderHelper {
 		db.stat = fi.Stat()
 	}
 
-	if dbp.URL != "" {
+	if dbp.URL != "" && dbp.NoCopy {
 		db.fullPath = dbp.URL
 	}
 	return db