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import datetime
import textwrap
import base64
def _write_java_header(output, package):
year = datetime.date.today().year
output.write(
"/*\n"
" * Copyright (C) %(year)d The Android Open Source Project\n"
" *\n"
" * Licensed under the Apache License, Version 2.0 (the \"License\");\n"
" * you may not use this file except in compliance with the License.\n"
" * You may obtain a copy of the License at\n"
" *\n"
" * http://www.apache.org/licenses/LICENSE-2.0\n"
" *\n"
" * Unless required by applicable law or agreed to in writing, software\n"
" * distributed under the License is distributed on an \"AS IS\" BASIS,\n"
" * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n"
" * See the License for the specific language governing permissions and\n"
" * limitations under the License.\n"
" */\n\n"
"/* This file is generated by print_log_list.py\n"
" * https://github.com/google/certificate-transparency/blob/master/python/utilities/log_list/print_log_list.py */\n\n"
"package %(package)s;\n\n" %
{"year": year,
"package": package})
def _encode_key(description, key):
unsigned = (ord(c) for c in key)
signed = (u - 256 if u > 127 else u for u in unsigned)
array = textwrap.fill(", ".join("%d" % s for s in signed),
width=85,
initial_indent=" " * 3,
subsequent_indent=" " * 3)
return (" // %(description)s\n"
" new byte[] {\n"
"%(array)s\n"
" },\n" % {
"description": description,
"array": array
})
def _write_java_class(output, logs, class_name):
descriptions = (' "%s",\n' % log["description"] for log in logs)
urls = (' "%s",\n' % log["url"] for log in logs)
keys = (_encode_key(log["description"], base64.decodestring(log["key"]))
for log in logs)
output.write(
"public final class %(class_name)s {\n"
" public static final int LOG_COUNT = %(count)d;\n"
" public static final String[] LOG_DESCRIPTIONS = new String[] {\n"
"%(descriptions)s"
" };\n"
" public static final String[] LOG_URLS = new String[] {\n"
"%(urls)s"
" };\n"
" public static final byte[][] LOG_KEYS = new byte[][] {\n"
"%(keys)s"
" };\n"
"}\n" % {
"class_name": class_name,
"count": len(logs),
"descriptions": "".join(descriptions),
"urls": "".join(urls),
"keys": "".join(keys)
})
def generate_java_source(json_log_list, output_path, class_name):
with open(output_path, "w") as output:
logs = json_log_list["logs"]
[pkg, cls] = class_name.rsplit('.', 1)
_write_java_header(output, pkg)
_write_java_class(output, logs, cls)
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