feat(checker): New checker request - GNU emacs

* feat(checker): New checker request - GNU emacs (#2921)

Signed-off-by: Bartlomiej Cieszkowski <bartlomiej.cieszkowski@intel.com>
Signed-off-by: Przemyslaw Romaniak <przemyslaw.romaniak@intel.com>

cve_bin_tool/checkers/emacs.py

@@ -0,0 +1,28 @@
+# Copyright (C) 2023 Intel Corporation
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+
+"""
+CVE checker for emacs
+
+https://www.cvedetails.com/vulnerability-list/vendor_id-72/product_id-741/GNU-Emacs.html
+
+"""
+from cve_bin_tool.checkers import Checker
+
+
+class EmacsChecker(Checker):
+    CONTAINS_PATTERNS = [
+        r"GNU Emacs comes with ABSOLUTELY NO WARRANTY",
+        r"Why we developed GNU Emacs and the GNU system",
+        # Alternate optional contains patterns,
+        # see https://github.com/intel/cve-bin-tool/tree/main/cve_bin_tool/checkers#helper-script for more details
+        # r"Info-goto-emacs-command-node"
+        # r"Info-goto-emacs-key-command-node"
+    ]
+    FILENAME_PATTERNS = [r"emacs"]
+    VERSION_PATTERNS = [
+        r"\$Id: GNU Emacs ([0-9]+\.[0-9]+)"
+    ]  # this version string is extracted from "$Id: GNU Emacs 26.3 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.14)  of 2020-03-26, modified by Debian $"
+
+    VENDOR_PRODUCT = [("gnu", "emacs")]