Begin building the framework to rename accounts. A pile of crap right now.

[mailshears.git] / lib / rm / plugins / davical.rb

diff --git a/lib/rm/plugins/davical.rb b/lib/rm/plugins/davical.rb
new file mode 100644 (file)
index 0000000..b8c8203
--- /dev/null
+++ b/lib/rm/plugins/davical.rb
@@ -0,0 +1,154 @@
+require 'pg'
+
+require 'common/plugin'
+require 'rm/rm_plugin'
+
+class DavicalDb
+  #
+  # DAViCal only supports Postgres, so even if we ever are
+  # database-agnostic, this plugin can't be.
+  #
+  include Plugin
+  include RmPlugin
+
+  def initialize()
+    cfg = Configuration.new()
+    @db_host = cfg.davical_dbhost
+    @db_port = cfg.davical_dbport
+    @db_opts = cfg.davical_dbopts
+    @db_tty  = cfg.davical_dbtty
+    @db_name = cfg.davical_dbname
+    @db_user = cfg.davical_dbuser
+    @db_pass = cfg.davical_dbpass
+  end
+
+
+  def describe_domain(domain)
+    # DAViCal doesn't have a concept of domains.
+    return 'N/A'
+  end
+
+
+  def describe_account(account)
+    principal_id = self.get_principal_id(account)
+
+    if principal_id.nil?
+      return 'User not found'
+    else
+      return "Principal ID: #{principal_id}"
+    end
+  end
+
+
+  def delete_domain(domain)
+    # DAViCal doesn't have a concept of domains.
+  end
+
+
+  def delete_account(account)
+    # Delete the given username. DAViCal uses foreign keys properly
+    # and only supports postgres, so we let the ON DELETE CASCADE
+    # trigger handle most of the work.
+    sql_queries = ['DELETE FROM usr WHERE username = $1']
+
+    begin
+      connection = PGconn.connect(@db_host,
+                                  @db_port,
+                                  @db_opts,
+                                  @db_tty,
+                                  @db_name,
+                                  @db_user,
+                                  @db_pass)
+
+      sql_queries.each do |sql_query|
+        connection.query(sql_query, [account])
+      end
+
+      connection.close()
+
+    rescue PGError => e
+      # Pretend like we're database-agnostic in case we ever are.
+      raise DatabaseError.new(e)
+    end
+
+  end
+
+
+  def get_leftover_domains(db_domains)
+    # AgenDAV doesn't have a concept of domains.
+    return []
+  end
+
+
+  def get_leftover_accounts(db_accounts)
+    # Get a list of all users who have logged in to DAViCal.
+    davical_accounts = self.get_davical_usernames()
+    return davical_accounts - db_accounts
+  end
+
+
+  protected;
+
+  def get_principal_id(account)
+    principal_id = nil
+
+    begin
+      connection = PGconn.connect(@db_host,
+                                  @db_port,
+                                  @db_opts,
+                                  @db_tty,
+                                  @db_name,
+                                  @db_user,
+                                  @db_pass)
+
+      sql_query =  "SELECT principal.principal_id "
+      sql_query += "FROM (principal INNER JOIN usr "
+      sql_query += "      ON principal.user_no = usr.user_no) "
+      sql_query += "WHERE usr.username = $1;"
+
+      connection.query(sql_query, [account]) do |result|
+        if result.num_tuples > 0
+          principal_id = result[0]['principal_id']
+        end
+      end
+
+      connection.close()
+
+    rescue PGError => e
+      # Pretend like we're database-agnostic in case we ever are.
+      raise DatabaseError.new(e)
+    end
+
+    return principal_id
+  end
+
+
+  def get_davical_usernames()
+    usernames = []
+
+    begin
+      connection = PGconn.connect(@db_host,
+                                  @db_port,
+                                  @db_opts,
+                                  @db_tty,
+                                  @db_name,
+                                  @db_user,
+                                  @db_pass)
+
+      # User #1 is the super-user, and not tied to an email address.
+      sql_query  = 'SELECT username FROM usr WHERE user_no > 1;'
+
+      connection.query(sql_query) do |result|
+        usernames = result.field_values('username')
+      end
+
+      connection.close()
+    rescue PGError => e
+      # Pretend like we're database-agnostic in case we ever are.
+      raise DatabaseError.new(e)
+    end
+
+    return usernames
+  end
+
+end