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gh-118658: Modify cert generation script to extract cert3.pem #124598

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Merged
merged 2 commits into from
Oct 4, 2024
Merged

gh-118658: Modify cert generation script to extract cert3.pem #124598

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2265e43
Modify cert generation script to extract cert3.pem.
felixfontein Sep 26, 2024
021af09
Use openssl CLI tool instead of text manipulation.
felixfontein Oct 4, 2024
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Modify cert generation script to extract cert3.pem.
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@felixfontein
felixfontein committed Sep 28, 2024
commit 2265e43c00347ea464debe8462c33d5523daddd7
21 changes: 21 additions & 0 deletions Lib/test/certdata/make_ssl_certs.py
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Original file line number Diff line number Diff line change
Expand Up @@ -231,6 +231,23 @@ def write_cert_reference(path):
print(refdata, file=f)


def extract_cert(pem_cert, index):
result = []
active = False
for line in pem_cert.splitlines():
match = active
if line == '-----BEGIN CERTIFICATE-----':
if index == 0:
active = True
match = True
index -= 1
elif line == '-----END CERTIFICATE-----':
active = False
if match:
result.append(line)
return '\n'.join(result) + '\n'


if __name__ == '__main__':
parser = argparse.ArgumentParser(description='Make the custom certificate and private key files used by test_ssl and friends.')
parser.add_argument('--days', default=days_default)
Expand Down Expand Up @@ -266,6 +283,10 @@ def write_cert_reference(path):
f.write(key)
f.write(cert)

cert = extract_cert(cert, 0)
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Instead of text manipulation, could we ask openssl to extract it?
As far as I can see, the incantation is:

openssl x509 -outform pem -in keycert3.pem -out cert3.pem

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Great idea! Implemented in 021af09.

with open('cert3.pem', 'w') as f:
f.write(cert)

cert, key = make_cert_key(cmdlineargs, 'fakehostname', sign=True)
with open('keycert4.pem', 'w') as f:
f.write(key)
Expand Down
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