Setting tag nodemanager-1.8-39

[nodemanager.git] / accounts.py

diff --git a/accounts.py b/accounts.py
index 0dbf000..df33977 100644 (file)
--- a/accounts.py
+++ b/accounts.py
@@ -23,7 +23,7 @@ maximum stack size.
 import Queue
 import os
 import pwd
-from grp import getgrnam
+import grp
 import threading
 
 import logger
@@ -37,6 +37,10 @@ shell_acct_class = {}
 # account type -> account class association
 type_acct_class = {}
 
+# these semaphores are acquired before creating/destroying an account
+create_sem = threading.Semaphore(1)
+destroy_sem = threading.Semaphore(1)
+
 def register_class(acct_class):
     """Call once for each account class.  This method adds the class to the dictionaries used to look up account classes by shell and type."""
     shell_acct_class[acct_class.SHELL] = acct_class
@@ -81,38 +85,55 @@ class Account:
         logger.verbose('%s: in accounts:configure'%self.name)
         new_keys = rec['keys']
         if new_keys != self.keys:
-            self.keys = new_keys
-            dot_ssh = '/home/%s/.ssh' % self.name
-            if not os.access(dot_ssh, os.F_OK): os.mkdir(dot_ssh)
+            # get the unix account info
+            gid = grp.getgrnam("slices")[2]
+            pw_info = pwd.getpwnam(self.name)
+            uid = pw_info[2]
+            pw_dir = pw_info[5]
+
+            # write out authorized_keys file and conditionally create
+            # the .ssh subdir if need be.
+            dot_ssh = os.path.join(pw_dir,'.ssh')
+            if not os.path.isdir(dot_ssh):
+                if not os.path.isdir(pw_dir):
+                    logger.verbose('WARNING: homedir %s does not exist for %s!'%(pw_dir,self.name))
+                    os.mkdir(pw_dir)
+                    os.chown(pw_dir, uid, gid)
+                os.mkdir(dot_ssh)
+
+            auth_keys = os.path.join(dot_ssh,'authorized_keys')
+            tools.write_file(auth_keys, lambda f: f.write(new_keys))
+
+            # set access permissions and ownership properly
             os.chmod(dot_ssh, 0700)
-            tools.write_file(dot_ssh + '/authorized_keys', lambda f: f.write(new_keys))
-            logger.log('%s: installing ssh keys' % self.name)
-            user = pwd.getpwnam(self.name)[2]
-            group = getgrnam("slices")[2]
-            os.chown(dot_ssh, user, group)
-            os.chown(dot_ssh + '/authorized_keys', user, group)
+            os.chown(dot_ssh, uid, gid)
+            os.chmod(auth_keys, 0600)
+            os.chown(auth_keys, uid, gid)
+
+            # set self.keys to new_keys only when all of the above ops succeed
+            self.keys = new_keys
+
+            logger.log('%s: installed ssh keys' % self.name)
 
     def start(self, delay=0): pass
     def stop(self): pass
     def is_running(self): pass
 
 class Worker:
-    # these semaphores are acquired before creating/destroying an account
-    _create_sem = threading.Semaphore(1)
-    _destroy_sem = threading.Semaphore(1)
-
     def __init__(self, name):
         self.name = name  # username
         self._acct = None  # the account object currently associated with this worker
 
     def ensure_created(self, rec, startingup = Startingup):
+        """Check account type is still valid.  If not, recreate sliver.  If still valid,
+        check if running and configure/start if not."""
         curr_class = self._get_class()
         next_class = type_acct_class[rec['type']]
         if next_class != curr_class:
             self._destroy(curr_class)
-            self._create_sem.acquire()
+            create_sem.acquire()
             try: next_class.create(self.name, rec['vref'])
-            finally: self._create_sem.release()
+            finally: create_sem.release()
         if not isinstance(self._acct, next_class): self._acct = next_class(rec)
         if startingup or \
           not self.is_running() or \
@@ -130,7 +151,7 @@ class Worker:
     def stop(self): self._acct.stop()
 
     def is_running(self): 
-        if self._acct.is_running():
+        if (self._acct != None) and self._acct.is_running():
             status = True
         else:
             status = False
@@ -140,9 +161,9 @@ class Worker:
     def _destroy(self, curr_class):
         self._acct = None
         if curr_class:
-            self._destroy_sem.acquire()
+            destroy_sem.acquire()
             try: curr_class.destroy(self.name)
-            finally: self._destroy_sem.release()
+            finally: destroy_sem.release()
 
     def _get_class(self):
         try: shell = pwd.getpwnam(self.name)[6]