fix manifest path matching slashes issue

bzz/api.go

@@ -93,6 +93,9 @@ func (self *Api) Stop() {
 func (self *Api) Get(bzzpath string) (content []byte, mimeType string, status int, size int, err error) {
 	var reader SectionReader
 	reader, mimeType, status, err = self.getPath("/" + bzzpath)
+	if err != nil {
+		return
+	}
 	content = make([]byte, reader.Size())
 	size, err = reader.Read(content)
 	if err == io.EOF {

bzz/manifest.go

@@ -1,13 +1,18 @@
 package bzz
 
 import (
-// "fmt"
+	// "fmt"
+	"regexp"
 )
 
 const (
 	manifestType = "application/bzz-manifest+json"
 )
 
+var (
+	leadingSlashes = regexp.MustCompile("^/+")
+)
+
 type manifest struct {
 	Entries []*manifestEntry `json:"entries"`
 }
@@ -21,12 +26,21 @@ type manifestEntry struct {
 
 func (self *manifest) getEntry(path string) (entry *manifestEntry, pos int) {
 	for _, entry = range self.Entries {
-		pos = len(entry.Path)
-		if len(path) >= pos && path[:pos] == entry.Path {
+		entryPath := leadingSlashes.ReplaceAllString(entry.Path, "")
+		pos = len(entryPath)
+		if len(path) >= pos && path[:pos] == entryPath {
+			var n int
+			if len(path) > pos {
+				chopped := leadingSlashes.ReplaceAllString(path[pos:], "")
+				n = len(path) - pos - len(chopped)
+			}
+			if n > 0 || pos == 0 || path[pos-1] == '/' {
+				pos += n
 				dpaLogger.Debugf("Swarm: '%s' matches '%s'.", path, entry.Path)
 				return
 			}
 		}
+	}
 	entry = nil
 	dpaLogger.Debugf("Path '%s' on manifest not found.", path)
 	return