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52 lines
1.8 KiB
Python
52 lines
1.8 KiB
Python
import base64, sys
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stSpam, stHam, stDump = 0, 1, 2
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# The markers parameters is in form ('start1', 'stop1'), ('start2', 'stop2')...
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# Return is (marker-index, substrate)
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def readPemBlocksFromFile(fileObj, *markers):
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startMarkers = dict(map(lambda x: (x[1],x[0]),
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enumerate(map(lambda x: x[0], markers))))
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stopMarkers = dict(map(lambda x: (x[1],x[0]),
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enumerate(map(lambda x: x[1], markers))))
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idx = -1; substrate = ''
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state = stSpam
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while 1:
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certLine = fileObj.readline()
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if not certLine:
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break
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certLine = certLine.strip()
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if state == stSpam:
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if certLine in startMarkers:
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certLines = []
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idx = startMarkers[certLine]
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state = stHam
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continue
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if state == stHam:
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if certLine in stopMarkers and stopMarkers[certLine] == idx:
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state = stDump
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else:
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certLines.append(certLine)
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if state == stDump:
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if sys.version_info[0] <= 2:
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substrate = ''.join([ base64.b64decode(x) for x in certLines ])
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else:
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substrate = ''.encode().join([ base64.b64decode(x.encode()) for x in certLines ])
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break
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return idx, substrate
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# Backward compatibility routine
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def readPemFromFile(fileObj,
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startMarker='-----BEGIN CERTIFICATE-----',
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endMarker='-----END CERTIFICATE-----'):
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idx, substrate = readPemBlocksFromFile(fileObj, (startMarker, endMarker))
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return substrate
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def readBase64FromFile(fileObj):
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if sys.version_info[0] <= 2:
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return ''.join([ base64.b64decode(x) for x in fileObj.readlines() ])
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else:
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return ''.encode().join(
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[ base64.b64decode(x.encode()) for x in fileObj.readlines() ]
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)
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