- log.write( "Creating ssh host keys\n" )
- key_gen_prog= "/usr/bin/ssh-keygen"
-
- log.write( "Generating SSH1 RSA host key:\n" )
- key_file= "/etc/ssh/ssh_host_key"
- utils.sysexec( "chroot %s %s -q -t rsa1 -f %s -C '' -N ''" %
- (SYSIMG_PATH,key_gen_prog,key_file), log )
- utils.sysexec( "chmod 600 %s/%s" % (SYSIMG_PATH,key_file), log )
- utils.sysexec( "chmod 644 %s/%s.pub" % (SYSIMG_PATH,key_file), log )
-
- log.write( "Generating SSH2 RSA host key:\n" )
- key_file= "/etc/ssh/ssh_host_rsa_key"
- utils.sysexec( "chroot %s %s -q -t rsa -f %s -C '' -N ''" %
- (SYSIMG_PATH,key_gen_prog,key_file), log )
- utils.sysexec( "chmod 600 %s/%s" % (SYSIMG_PATH,key_file), log )
- utils.sysexec( "chmod 644 %s/%s.pub" % (SYSIMG_PATH,key_file), log )
-
- log.write( "Generating SSH2 DSA host key:\n" )
- key_file= "/etc/ssh/ssh_host_dsa_key"
- utils.sysexec( "chroot %s %s -q -t dsa -f %s -C '' -N ''" %
- (SYSIMG_PATH,key_gen_prog,key_file), log )
- utils.sysexec( "chmod 600 %s/%s" % (SYSIMG_PATH,key_file), log )
- utils.sysexec( "chmod 644 %s/%s.pub" % (SYSIMG_PATH,key_file), log )
+ # for upgrades : do not overwrite already existing keys
+ log.write("Creating ssh host keys\n")
+ key_gen_prog = "/usr/bin/ssh-keygen"
+
+ key_specs = [
+ ("/etc/ssh/ssh_host_key", 'rsa1', "SSH1 RSA"),
+ ("/etc/ssh/ssh_host_rsa_key", 'rsa', "SSH2 RSA"),
+ ("/etc/ssh/ssh_host_dsa_key", 'dsa', "SSH2 DSA"),
+ ]
+
+ for key_file, key_type, label in key_specs:
+ abs_file = "{}/{}".format(SYSIMG_PATH, key_file)
+ if not os.path.exists(abs_file):
+ log.write("Generating {} host key {}\n".format(label, key_file))
+ utils.sysexec_chroot(SYSIMG_PATH, "{} -q -t {} -f {} -C '' -N ''"\
+ .format(key_gen_prog, key_type, key_file), log)
+ utils.sysexec("chmod 600 {}/{}".format(SYSIMG_PATH, key_file), log)
+ utils.sysexec("chmod 644 {}/{}.pub".format(SYSIMG_PATH, key_file), log)