#!/usr/bin/env python
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# Copyright (C) 2019 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This file should do the same thing when being invoked in any of these ways:
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# ./traceconv
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# python traceconv
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# bash traceconv
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# cat ./traceconv | bash
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# cat ./traceconv | python -
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BASH_FALLBACK=""" "
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exec python - "$@" <<'#'EOF
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#"""
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import hashlib
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import os
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import sys
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import tempfile
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import urllib
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TRACE_TO_TEXT_SHAS = {
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'linux': '91cbc8addb9adc4dcc0cbf398e7ff67a8ad14ece',
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'mac': '36a1313c8900b3b59b40e6f07488a6d2c7ffaa94',
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}
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TRACE_TO_TEXT_PATH = tempfile.gettempdir()
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TRACE_TO_TEXT_BASE_URL = (
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'https://storage.googleapis.com/perfetto/')
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def check_hash(file_name, sha_value):
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with open(file_name, 'rb') as fd:
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file_hash = hashlib.sha1(fd.read()).hexdigest()
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return file_hash == sha_value
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def load_trace_to_text(platform):
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sha_value = TRACE_TO_TEXT_SHAS[platform]
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file_name = 'trace_to_text-' + platform + '-' + sha_value
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local_file = os.path.join(TRACE_TO_TEXT_PATH, file_name)
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if os.path.exists(local_file):
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if not check_hash(local_file, sha_value):
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os.remove(local_file)
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else:
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return local_file
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url = TRACE_TO_TEXT_BASE_URL + file_name
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urllib.urlretrieve(url, local_file)
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if not check_hash(local_file, sha_value):
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os.remove(local_file)
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raise ValueError("Invalid signature.")
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os.chmod(local_file, 0o755)
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return local_file
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def main(argv):
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platform = None
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if sys.platform.startswith('linux'):
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platform = 'linux'
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elif sys.platform.startswith('darwin'):
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platform = 'mac'
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else:
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print("Invalid platform: {}".format(sys.platform))
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return 1
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trace_to_text_binary = load_trace_to_text(platform)
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os.execv(trace_to_text_binary, [trace_to_text_binary] + argv[1:])
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if __name__ == '__main__':
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sys.exit(main(sys.argv))
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#EOF
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