move genkey() and genpassword() to common.py for use in multiple sections

genkey() and genpassword() are now going to be used by `fdroid update` as
well as `fdroid init`, so they should be in common.py

fdroidserver/common.py

@@ -30,6 +30,8 @@ import Queue
 import threading
 import magic
 import logging
+import hashlib
+import socket
 from distutils.version import LooseVersion
 from zipfile import ZipFile
 
@@ -2012,3 +2014,34 @@ def find_command(command):
                 return exe_file
 
     return None
+
+
+def genpassword():
+    '''generate a random password for when generating keys'''
+    h = hashlib.sha256()
+    h.update(os.urandom(16))  # salt
+    h.update(bytes(socket.getfqdn()))
+    return h.digest().encode('base64').strip()
+
+
+def genkey(keystore, repo_keyalias, password, keydname):
+    '''generate a new keystore with a new key in it for signing repos'''
+    logging.info('Generating a new key in "' + keystore + '"...')
+    write_password_file("keystorepass", password)
+    write_password_file("keypass", password)
+    p = FDroidPopen(['keytool', '-genkey',
+                     '-keystore', keystore, '-alias', repo_keyalias,
+                     '-keyalg', 'RSA', '-keysize', '4096',
+                     '-sigalg', 'SHA256withRSA',
+                     '-validity', '10000',
+                     '-storepass:file', config['keystorepassfile'],
+                     '-keypass:file', config['keypassfile'],
+                     '-dname', keydname])
+    # TODO keypass should be sent via stdin
+    if p.returncode != 0:
+        raise BuildException("Failed to generate key", p.output)
+    # now show the lovely key that was just generated
+    p = FDroidPopen(['keytool', '-list', '-v',
+                     '-keystore', keystore, '-alias', repo_keyalias,
+                     '-storepass:file', config['keystorepassfile']])
+    logging.info(p.output.strip() + '\n\n')

fdroidserver/init.py

@@ -20,7 +20,6 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import glob
-import hashlib
 import os
 import re
 import shutil
@@ -30,7 +29,6 @@ from optparse import OptionParser
 import logging
 
 import common
-from common import FDroidPopen, BuildException
 
 config = {}
 options = None
@@ -61,37 +59,6 @@ def disable_in_config(key, value):
         f.writelines(data)
 
 
-def genpassword():
-    '''generate a random password for when generating keys'''
-    h = hashlib.sha256()
-    h.update(os.urandom(16))  # salt
-    h.update(bytes(socket.getfqdn()))
-    return h.digest().encode('base64').strip()
-
-
-def genkey(keystore, repo_keyalias, password, keydname):
-    '''generate a new keystore with a new key in it for signing repos'''
-    logging.info('Generating a new key in "' + keystore + '"...')
-    common.write_password_file("keystorepass", password)
-    common.write_password_file("keypass", password)
-    p = FDroidPopen(['keytool', '-genkey',
-                     '-keystore', keystore, '-alias', repo_keyalias,
-                     '-keyalg', 'RSA', '-keysize', '4096',
-                     '-sigalg', 'SHA256withRSA',
-                     '-validity', '10000',
-                     '-storepass:file', config['keystorepassfile'],
-                     '-keypass:file', config['keypassfile'],
-                     '-dname', keydname])
-    # TODO keypass should be sent via stdin
-    if p.returncode != 0:
-        raise BuildException("Failed to generate key", p.output)
-    # now show the lovely key that was just generated
-    p = FDroidPopen(['keytool', '-list', '-v',
-                     '-keystore', keystore, '-alias', repo_keyalias,
-                     '-storepass:file', config['keystorepassfile']])
-    logging.info(p.output.strip() + '\n\n')
-
-
 def main():
 
     global options, config
@@ -262,7 +229,7 @@ def main():
         keystoredir = os.path.dirname(keystore)
         if not os.path.exists(keystoredir):
             os.makedirs(keystoredir, mode=0o700)
-        password = genpassword()
+        password = common.genpassword()
         write_to_config(test_config, 'keystorepass', password)
         write_to_config(test_config, 'keypass', password)
         if options.repo_keyalias is None:
@@ -271,7 +238,7 @@ def main():
         if not options.distinguished_name:
             keydname = 'CN=' + repo_keyalias + ', OU=F-Droid'
             write_to_config(test_config, 'keydname', keydname)
-        genkey(keystore, repo_keyalias, password, keydname)
+        common.genkey(keystore, repo_keyalias, password, keydname)
 
     logging.info('Built repo based in "' + fdroiddir + '"')
     logging.info('with this config:')