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