scripts: add CVE conversion scripts

Add scripts for post-processing the JSON CVE data:

• cve-json-to-csv.py allows to convert the JSON file to CSV
• recipes-with-no-cves.py lists CVE status of all recipes

Signed-off-by: Marta Rybczynska marta.rybczynska@huawei.com

scripts/cve-json-to-csv.py

+# SPDX-FileCopyrightText: Huawei Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+
+# CVE-check example script
+# Convert the cve-check JSON output to a CSV file
+
+import sys
+import getopt
+
+infile = "in.json"
+outfile = "out.csv"
+show_all = False
+
+
+def show_syntax_and_exit(code):
+    """
+    Show the program syntax and exit with an errror
+    Arguments:
+        code: the error code to return
+    """
+    print("Syntax: %s [-h][-i inputfile][-o outputfile] [-a]" % __name__)
+    print("Default files: in.json and out.csv")
+    print("Use -a or -all to list all issues, otherwise we filter only unpatched ones")
+    sys.exit(code)
+
+
+def exit_error(code, message):
+    """
+    Show the error message and exit with an errror
+    Arguments:
+        code: the error code to return
+        message: the message to show
+    """
+    print("Error: %s" % message)
+    sys.exit(code)
+
+
+def parse_args(argv):
+    """
+    Parse the program arguments, put options in global variables
+    Arguments:
+        argv: program arguments
+    """
+    global infile, outfile, show_all
+    try:
+        opts, args = getopt.getopt(argv, "hi:o:a", ["input", "output"])
+    except getopt.GetoptError:
+        show_syntax_and_exit(1)
+    for opt, arg in opts:
+        if opt == "-h":
+            show_syntax_and_exit(0)
+        elif opt in ("-i", "--input"):
+            infile = arg
+        elif opt in ("-o", "--output"):
+            outfile = arg
+        elif opt in ("-a", "--all"):
+            show_all = True
+
+
+def load_json(filename):
+    """
+    Load the JSON file, return the resulting dictionary
+    Arguments:
+        filename: the file to open
+    Returns:
+        Parsed file as a dictionary
+    """
+    import json
+
+    out = {}
+    try:
+        with open(filename, "r") as f:
+            out = json.load(f)
+    except FileNotFoundError:
+        exit_error(1, "Input file (%s) not found" % (filename))
+    except json.decoder.JSONDecodeError as error:
+        exit_error(1, "Malformed JSON file: %s" % str(error))
+    return out
+
+
+def write_csv(filename, data, unpatched_only):
+    """
+    Write the resulting CSV with one line for each package
+    Arguments:
+        filename: the file to write to
+        data: dictionary from parsing the JSON file
+        unpatched_only: True if we want only unpatched issues, False otherwise
+    Returns:
+        Parsed file as a dictionary
+    """
+    if not "version" in data or data["version"] != "1":
+        exit_error(1, "Unrecognized format version number")
+    if not "package" in data:
+        exit_error(1, "Mandatory 'package' key not found")
+
+    lines = ""
+    for package in data["package"]:
+        keys_in_package = {"name", "layer", "version", "issue"}
+        if keys_in_package - package.keys():
+            exit_error(
+                1,
+                "Missing a mandatory key in package: %s"
+                % (keys_in_package - package.keys()),
+            )
+
+        package_name = package["name"]
+        layer = package["layer"]
+        package_version = package["version"]
+
+        for issue in package["issue"]:
+            keys_in_issue = {"id", "scorev2", "scorev3", "vector", "status"}
+            if keys_in_issue - issue.keys():
+                exit_error(
+                    1,
+                    "Missing mandatory keys %s in 'issue' for the package '%s'"
+                    % (keys_in_issue - issue.keys(), package_name),
+                )
+
+            cve_id = issue["id"]
+            scorev2 = issue["scorev2"]
+            scorev3 = issue["scorev3"]
+            vector = issue["vector"]
+            status = issue["status"]
+            if (unpatched_only == False) or (status == "Unpatched"):
+                lines += "%s;%s;%s;%s;%s;%s;%s\n" % (
+                    layer,
+                    package_name,
+                    package_version,
+                    cve_id,
+                    scorev2,
+                    scorev3,
+                    vector,
+                )
+
+    with open(filename, "w") as f:
+        f.write(lines)
+
+
+def main(argv):
+    parse_args(argv)
+    data = load_json(infile)
+    write_csv(outfile, data, not show_all)
+
+
+if __name__ == "__main__":
+    main(sys.argv[1:])