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60 lines
2.2 KiB
Python
60 lines
2.2 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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import sys
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import os
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import subprocess
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import shutil
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'''
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Scans the given directories for binaries referencing the AddressSanitizer
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runtime library, copies it to the main directory and rewrites binaries to not
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reference it with absolute paths but with @executable_path instead.
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'''
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# This is the dylib we're looking for
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DYLIB_NAME='libclang_rt.asan_osx_dynamic.dylib'
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def scan_directory(path):
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dylibCopied = False
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for root, subdirs, files in os.walk(path):
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for filename in files:
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filename = os.path.join(root, filename)
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# Skip all files that aren't either dylibs or executable
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if not (filename.endswith('.dylib') or os.access(filename, os.X_OK)):
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continue
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try:
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otoolOut = subprocess.check_output(['otool', '-L', filename])
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except:
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# Errors are expected on non-mach executables, ignore them and continue
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continue
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for line in otoolOut.splitlines():
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if line.find(DYLIB_NAME) != -1:
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absDylibPath = line.split()[0]
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# Don't try to rewrite binaries twice
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if absDylibPath.find('@executable_path/') == 0:
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continue
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if not dylibCopied:
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# Copy the runtime once to the main directory, which is passed
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# as the argument to this function.
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shutil.copy(absDylibPath, path)
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# Now rewrite the library itself
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subprocess.check_call(['install_name_tool', '-id', '@executable_path/' + DYLIB_NAME, os.path.join(path, DYLIB_NAME)])
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dylibCopied = True
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# Now use install_name_tool to rewrite the path in our binary
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subprocess.check_call(['install_name_tool', '-change', absDylibPath, '@executable_path/' + DYLIB_NAME, filename])
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break
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if __name__ == '__main__':
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for d in sys.argv[1:]:
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scan_directory(d)
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