Add message signer cli

funga/eth/runnable/msg.py

@@ -0,0 +1,49 @@
+# standard imports
+import os
+import logging
+import sys
+import json
+import argparse
+import getpass
+
+# external impors
+import coincurve
+from hexathon import strip_0x
+
+# local imports
+from funga.error import DecryptError
+from funga.eth.keystore.dict import DictKeystore
+from funga.eth.signer import EIP155Signer
+
+
+logging.basicConfig(level=logging.WARNING)
+logg = logging.getLogger()
+
+argparser = argparse.ArgumentParser()
+argparser.add_argument('-f', type=str, help='Keyfile to use for signing')
+argparser.add_argument('-z', action='store_true', help='zero-length password')
+argparser.add_argument('-v', action='store_true', help='be verbose')
+argparser.add_argument('msg', type=str, help='Message to sign')
+args = argparser.parse_args()
+
+if args.v:
+    logg.setLevel(logging.DEBUG)
+
+
+def main():
+    passphrase = os.environ.get('WALLET_PASSPHRASE', os.environ.get('PASSPHRASE'))
+    if args.z:
+        passphrase = ''
+    if passphrase == None:
+        passphrase = getpass.getpass('decryption phrase: ')
+   
+    keystore = DictKeystore()
+    address = keystore.import_keystore_file(args.f, password=passphrase)
+
+    signer = EIP155Signer(keystore)
+    sig = signer.sign_ethereum_message(address, args.msg.encode('utf-8').hex(), password=passphrase)
+    sys.stdout.write(sig.hex())
+
+
+if __name__ == '__main__':
+    main()