Add support for MSI file formats

dennisstritzke · Aug 26, 2021 · f85da30 · f85da30
1 parent 3b6e27b
commit f85da30
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Showing 3 changed files with 11 additions and 1 deletion.
diff --git a/internal/magic/ms_office.go b/internal/magic/ms_office.go
@@ -224,6 +224,15 @@ func Msg(raw []byte, limit uint32) bool {
  })
 }
 
+// Msi matches a Microsoft Windows Installer file.
+// http://fileformats.archiveteam.org/wiki/Microsoft_Compound_File
+func Msi(raw []byte, limit uint32) bool {
+ return matchOleClsid(raw, []byte{
+ 0x84, 0x10, 0x0C, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46,
+ })
+}
+
 // Helper to match by a specific CLSID of a compound file.
 //
 // http://fileformats.archiveteam.org/wiki/Microsoft_Compound_File

diff --git a/testdata/msi.msi b/testdata/msi.msi
diff --git a/tree.go b/tree.go
@@ -58,7 +58,8 @@ var (
  pptx = newMIME("application/vnd.openxmlformats-officedocument.presentationml.presentation", ".pptx", magic.Pptx)
  epub = newMIME("application/epub+zip", ".epub", magic.Epub)
  jar = newMIME("application/jar", ".jar", magic.Jar)
- ole = newMIME("application/x-ole-storage", "", magic.Ole, aaf, msg, xls, pub, ppt, doc)
+ ole = newMIME("application/x-ole-storage", "", magic.Ole, msi, aaf, msg, xls, pub, ppt, doc)
+ msi = newMIME("application/x-msi", ".msi", magic.Msi)
  aaf = newMIME("application/octet-stream", ".aaf", magic.Aaf)
  doc = newMIME("application/msword", ".doc", magic.Doc).
  alias("application/vnd.ms-word")