Fix: ensure Internet Explorer bookmark dumps can be imported

Relates to https://github.com/shaarli/Shaarli/issues/607

Modifications:
- [application][tests] NetscapeBookmarkUtils: more permissive doctype detection

The IE bookmark exports contain extra escape sequences, which can be observed
by binary comparison of the reference input data used in tests:

   $ cmp -b -l -n 8 netscape_basic.htm internet_explorer_encoding.htm

   1  74 <    357 M-o
   2  41 !    273 M-;
   3 104 D    277 M-?
   4 117 O     74 <
   5 103 C     41 !
   6 124 T    104 D
   7 131 Y    117 O
   8 120 P    103 C

Signed-off-by: VirtualTam <virtualtam@flibidi.net>

1 files changed, 1 insertions, 2 deletions

diff --git a/application/NetscapeBookmarkUtils.php b/application/NetscapeBookmarkUtils.php
index b99a432e..c3181254 100644
--- a/application/NetscapeBookmarkUtils.php
+++ b/application/NetscapeBookmarkUtils.php
@@ -98,8 +98,7 @@ class NetscapeBookmarkUtils
         $filesize = $files['filetoupload']['size'];
         $data = file_get_contents($files['filetoupload']['tmp_name']);
 
-        // Sniff file type
-        if (! startsWith($data, '<!DOCTYPE NETSCAPE-Bookmark-file-1>')) {
+        if (strpos($data, '<!DOCTYPE NETSCAPE-Bookmark-file-1>') === false) {
             return self::importStatus($filename, $filesize);
         }