25 lines
663 B
Python
25 lines
663 B
Python
from sys import argv
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from subprocess import Popen, PIPE, STDOUT
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p = Popen(["openssl", "s_client", "-host", argv[1], "-port", "443", "-prexit", "-showcerts"], stdin=PIPE, stdout=PIPE, stderr=STDOUT)
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stdout = p.communicate(input=b'\n')[0]
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data = stdout.decode()
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certs = []
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cert = ""
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capturing = False
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for line in data.split('\n'):
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if line == '-----BEGIN CERTIFICATE-----':
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capturing = True
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if capturing:
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cert = "{0}{1}\n".format(cert, line)
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if line == '-----END CERTIFICATE-----':
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capturing = False
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certs.append(cert)
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cert = ""
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with open(argv[2], 'w') as f:
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for cert in set(certs):
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f.write(cert)
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