feat: add JSON testing data

redact_fake_json.py

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+#! /usr/bin/env python3
+# SPDX-License-Identifier: Apache-2.0
+# Redact potentially sensitive information in smartctl JSON files
+# This script does an in-place modification.
+import json
+import sys
+import copy
+import os
+
+def main():
+    for arg in sys.argv[1:]:
+        print(arg)
+        redact_one_file(arg)
+
+def redact_one_file(filename):
+    data = None
+    tmpname = filename+".new"
+    with open(filename, "r") as jsonFile:
+        data = json.load(jsonFile)
+
+    newdata = redact_data(data)
+
+    with open(tmpname, "w") as jsonFile:
+        json.dump(newdata, jsonFile, indent="\t", sort_keys=True)
+
+    os.rename(tmpname, filename)
+
+def mutate_nested_dict(d, keys, newvalue, if_present=False):
+    # if_present=True: only mutate if the full key path exists.
+    if len(keys) == 1:
+        if not if_present or keys[0] in d:
+            d[keys[0]] = newvalue
+    else:
+        k = keys[0]
+        if k in d:
+            mutate_nested_dict(d[k], keys[1:], newvalue, if_present=if_present)
+
+REDACTED_STRING = 'REDACTED'
+REDACTED_TIME_T = 1234567890
+REDACTED_ASCTIME = "Fri Feb 13 23:31:30 2009 UTC" # TODO: generate from TIME_T, with UTC
+REDACTED_HEX16_STR = '0x1234567890abcdef'
+REDACTED_UINT32 = 1234567890
+
+REDACT_FIELDS = [
+    {'k': ['smartctl','platform_info'], 'v': REDACTED_STRING},
+    {'k': ['smartctl','build_info'], 'v': REDACTED_STRING},
+    {'k': ['serial_number'], 'v': REDACTED_STRING},
+    {'k': ['firmware_version'], 'v': REDACTED_STRING},
+    {'k': ['local_time', 'time_t'], 'v': REDACTED_TIME_T},
+    {'k': ['local_time', 'asctime'], 'v': REDACTED_ASCTIME},
+    {'k': ['logical_unit_id'], 'v': REDACTED_HEX16_STR},
+    {'k': ['wwn','id'], 'v': REDACTED_UINT32},
+    # TODO: how to redact /dev/sdX /dev/nvmeN ??
+]
+
+def redact_data(data):
+    newdata = copy.deepcopy(data)
+    for f in REDACT_FIELDS:
+        #newval = str(f['v'])+str(f['k']) # for debugging
+        newval = f['v']
+        mutate_nested_dict(newdata, f['k'], newval, if_present=True)
+    return newdata
+
+if __name__ == '__main__':
+    main()

testdata/.gitignore

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+!*.json