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16d9d45e06
There are a couple of places where it's handy to print TLS constants in human-readable form. To do so, we need functions that take TLS constants (usually in uint16 form) and give us friendly strings. Go's crypto/tls package does not provide us with this, so this patch introduces a new module with that purpose.
55 lines
1.2 KiB
Python
Executable File
55 lines
1.2 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# This hacky script generates a go file with a map of version -> name for the
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# entries in the TLS Cipher Suite Registry.
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import csv
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import urllib.request
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import sys
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# Where to get the TLS parameters from.
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# See http://www.iana.org/assignments/tls-parameters/tls-parameters.xml.
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URL = "https://www.iana.org/assignments/tls-parameters/tls-parameters-4.csv"
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def getCiphers():
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req = urllib.request.urlopen(URL)
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data = req.read().decode('utf-8')
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ciphers = []
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reader = csv.DictReader(data.splitlines())
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for row in reader:
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desc = row["Description"]
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rawval = row["Value"]
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# Just plain TLS values for now, to keep it simple.
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if "-" in rawval or not desc.startswith("TLS"):
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continue
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rv1, rv2 = rawval.split(",")
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rv1, rv2 = int(rv1, 16), int(rv2, 16)
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val = "0x%02x%02x" % (rv1, rv2)
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ciphers.append((val, desc))
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return ciphers
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ciphers = getCiphers()
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out = open(sys.argv[1], 'w')
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out.write("""\
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package tlsconst
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// AUTOGENERATED - DO NOT EDIT
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//
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// This file was autogenerated by generate-ciphers.py.
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var cipherSuiteName = map[uint16]string{
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""")
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for ver, desc in ciphers:
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out.write('\t%s: "%s",\n' % (ver, desc))
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out.write('}\n')
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