Fixed KRA install problem.

Currently when installing an additional subsystem to an existing
instance the install tool always generates a new random password in
the pki_pin property which would not work with the existing NSS
database. The code has been modified to load the existing NSS
database password from the instance if the instance already exists.

The PKIInstance class has been modified to allow loading partially
created instance to help the installation.

https://fedorahosted.org/pki/ticket/2247

2 files changed, 44 insertions, 28 deletions

diff --git a/base/server/python/pki/server/__init__.py b/base/server/python/pki/server/__init__.py
index 2f0b5bdf0..b01c1ff75 100644
--- a/base/server/python/pki/server/__init__.py
+++ b/base/server/python/pki/server/__init__.py
@@ -415,40 +415,44 @@ class PKIInstance(object):
 
     def load(self):
         # load UID and GID
-        with open(self.registry_file, 'r') as registry:
-            lines = registry.readlines()
+        if os.path.exists(self.registry_file):
 
-        for line in lines:
+            with open(self.registry_file, 'r') as registry:
+                lines = registry.readlines()
 
-            m = re.search('^PKI_USER=(.*)$', line)
-            if m:
-                self.user = m.group(1)
-                self.uid = pwd.getpwnam(self.user).pw_uid
+            for line in lines:
+                m = re.search('^PKI_USER=(.*)$', line)
+                if m:
+                    self.user = m.group(1)
+                    self.uid = pwd.getpwnam(self.user).pw_uid
 
-            m = re.search('^PKI_GROUP=(.*)$', line)
-            if m:
-                self.group = m.group(1)
-                self.gid = grp.getgrnam(self.group).gr_gid
+                m = re.search('^PKI_GROUP=(.*)$', line)
+                if m:
+                    self.group = m.group(1)
+                    self.gid = grp.getgrnam(self.group).gr_gid
 
         # load passwords
         self.passwords.clear()
-        lines = open(self.password_conf).read().splitlines()
+        if os.path.exists(self.password_conf):
 
-        for line in lines:
-            parts = line.split('=', 1)
-            name = parts[0]
-            value = parts[1]
-            self.passwords[name] = value
+            lines = open(self.password_conf).read().splitlines()
+
+            for line in lines:
+                parts = line.split('=', 1)
+                name = parts[0]
+                value = parts[1]
+                self.passwords[name] = value
 
         # load subsystems
-        for subsystem_name in os.listdir(self.registry_dir):
-            if subsystem_name in SUBSYSTEM_TYPES:
-                if subsystem_name in SUBSYSTEM_CLASSES:
-                    subsystem = SUBSYSTEM_CLASSES[subsystem_name](self)
-                else:
-                    subsystem = PKISubsystem(self, subsystem_name)
-                subsystem.load()
-                self.subsystems.append(subsystem)
+        if os.path.exists(self.registry_dir):
+            for subsystem_name in os.listdir(self.registry_dir):
+                if subsystem_name in SUBSYSTEM_TYPES:
+                    if subsystem_name in SUBSYSTEM_CLASSES:
+                        subsystem = SUBSYSTEM_CLASSES[subsystem_name](self)
+                    else:
+                        subsystem = PKISubsystem(self, subsystem_name)
+                    subsystem.load()
+                    self.subsystems.append(subsystem)
 
     def get_password(self, name):
         if name in self.passwords:
diff --git a/base/server/python/pki/server/deployment/pkiparser.py b/base/server/python/pki/server/deployment/pkiparser.py
index 7d4621555..80f3b55d3 100644
--- a/base/server/python/pki/server/deployment/pkiparser.py
+++ b/base/server/python/pki/server/deployment/pkiparser.py
@@ -570,9 +570,21 @@ class PKIConfigParser:
             pin_low = 100000000000
             pin_high = 999999999999
 
-            # use user-provided PIN if specified
-            if 'pki_pin' not in self.mdict:
-                # otherwise generate a random password
+            instance = pki.server.PKIInstance(self.mdict['pki_instance_name'])
+            instance.load()
+
+            internal_password = self.mdict['pki_self_signed_token']
+
+            # if instance already exists and has password, reuse the password
+            if internal_password in instance.passwords:
+                self.mdict['pki_pin'] = instance.passwords.get(internal_password)
+
+            # otherwise, use user-provided password if specified
+            elif 'pki_pin' in self.mdict:
+                pass
+
+            # otherwise, generate a random password
+            else:
                 self.mdict['pki_pin'] = \
                     random.randint(pin_low, pin_high)