Merge pull request #289 from gabriel-vasile/pdf

Add missing PDF signatures
gabriel-vasile · May 16, 2022 · 14adc29 · 14adc29
2 parents fe5b52f + 62fd23c
commit 14adc29
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/internal/magic/document.go b/internal/magic/document.go
@@ -4,7 +4,15 @@ import "bytes"
 
 var (
 	// Pdf matches a Portable Document Format file.
-	Pdf = prefix([]byte{0x25, 0x50, 0x44, 0x46})
+	// https://github.com/file/file/blob/11010cc805546a3e35597e67e1129a481aed40e8/magic/Magdir/pdf
+	Pdf = prefix(
+		// usual pdf signature
+		[]byte("%PDF-"),
+		// new-line prefixed signature
+		[]byte("\012%PDF-"),
+		// UTF-8 BOM prefixed signature
+		[]byte("\xef\xbb\xbf%PDF-"),
+	)
 	// Fdf matches a Forms Data Format file.
 	Fdf = prefix([]byte("%FDF"))
 	// Mobi matches a Mobi file.