From 437d29cb941f7db680b4665acae24bfdcdcaf708 Mon Sep 17 00:00:00 2001
From: bnewbold <bnewbold@robocracy.org>
Date: Wed, 25 Jul 2012 18:11:56 -0700
Subject: add timezone setting hook

---
 README            |  2 --
 exmachina.py      | 22 ++++++++++++++++++----
 test_exmachina.py | 16 ++++++++++++----
 3 files changed, 30 insertions(+), 10 deletions(-)

diff --git a/README b/README
index 518cfa6..9d5d528 100644
--- a/README
+++ b/README
@@ -17,8 +17,6 @@ Features:
 * call init.d service scripts: status, start, stop, restart
 
 TODO:
-* add apt-get package installation/removal methods
-* add/handle one or two common non-augeas configuration methods (eg, timezone?)
 * use /var/lib/exmachina/<something> as socket instead of /tmp/exmachina.sock?
 
 ### Dependancies (server)
diff --git a/exmachina.py b/exmachina.py
index 60c0771..21de493 100755
--- a/exmachina.py
+++ b/exmachina.py
@@ -31,11 +31,11 @@ client in the same way. The init_test.sh script demonstrates this mechanism.
 import os
 import sys
 import grp
+import shutil
 import argparse
 import logging
 import socket
 import subprocess
-import stat
 import time
 import base64
 
@@ -55,7 +55,7 @@ def execute_service(servicename, action, timeout=10):
     script = "/etc/init.d/" + os.path.split(servicename)[1]
 
     if not os.path.exists(script):
-        return "ERROR: so such service"
+        raise ValueError("so such service: %s" % servicename)
 
     command_list = [script, action]
     log.info("executing: %s" % command_list)
@@ -75,6 +75,7 @@ def execute_service(servicename, action, timeout=10):
                         (timeout, command_list))
 
     stdout, stderr = proc.communicate()
+    # TODO: should raise exception here if proc.returncode != 0?
     return stdout, stderr, proc.returncode
 
 def execute_apt(packagename, action, timeout=120, aptargs=['-q', '-y']):
@@ -182,8 +183,19 @@ class ExMachinaHandler(bjsonrpc.handlers.BaseHandler):
     def set_timezone(self, tzname):
         if not self.secret_key:
             log.info("reset timezone to %s" % tzname)
-            pass
-
+            tzname = tzname.strip()
+            tzpath = os.path.join("/usr/share/zoneinfo", tzname)
+            try:
+                os.stat(tzpath)
+            except OSError:
+                # file not found
+                raise ValueError("timezone not valid: %s" % tzname)
+            shutil.copy(
+                os.path.join("/usr/share/zoneinfo", tzname),
+                "/etc/localtime")
+            with open("/etc/timezone", "w") as tzfile:
+                tzfile.write(tzname + "\n")
+            return "timezone changed to %s" % tzname
 
     # ------------- init.d Service Control -----------------
     def initd_status(self, servicename):
@@ -249,6 +261,7 @@ class ExMachinaClient():
         self.augeas = EmptyClass()
         self.initd = EmptyClass()
         self.apt = EmptyClass()
+        self.misc = EmptyClass()
 
         self.augeas.save = self.conn.call.augeas_save
         self.augeas.set = self.conn.call.augeas_set
@@ -265,6 +278,7 @@ class ExMachinaClient():
         self.apt.install = self.conn.call.apt_install
         self.apt.update = self.conn.call.apt_update
         self.apt.remove = self.conn.call.apt_remove
+        self.misc.set_timezone = self.conn.call.set_timezone
 
     def close(self):
         self.sock.close()
diff --git a/test_exmachina.py b/test_exmachina.py
index ec73def..e8d239d 100755
--- a/test_exmachina.py
+++ b/test_exmachina.py
@@ -20,13 +20,11 @@ at the same time:
 """
 
 import sys
-import optparse
-import logging
 import socket
 
 import bjsonrpc
 import bjsonrpc.connection
-import augeas
+from bjsonrpc.exceptions import ServerError
 
 from exmachina import ExMachinaClient
 
@@ -62,12 +60,22 @@ def main():
     client = ExMachinaClient(secret_key=secret_key)
     print client.augeas.match("/files/etc/*")
     #print client.initd.restart("bluetooth")
-    print client.initd.status("greentooth")
+    try:
+        print client.initd.status("greentooth")
+        print "ERROR: should have failed above!"
+    except ServerError:
+        print "(got expected error, good!)"
     print "(expect Error on the above line)"
     print client.initd.status("bluetooth")
     print client.apt.install("pkg_which_does_not_exist")
     print client.apt.remove("pkg_which_does_not_exist")
     #print client.apt.update() # can be slow...
+    #print client.misc.set_timezone("UTC") # don't clobber system...
+    try:
+        print client.misc.set_timezone("whoopie") # should be an error
+        print "ERROR: should have failed above!"
+    except ServerError:
+        print "(got expected error, good!)"
     client.close()
 
 if __name__ == '__main__':
-- 
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