--- a/src/memory/memory.py	Fri Mar 21 15:36:01 2014 +0100
+++ b/src/memory/memory.py	Fri Mar 21 16:08:11 2014 +0100
@@ -17,28 +17,21 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from __future__ import with_statement
 from sat.core.i18n import _
 
 import os.path
 import csv
 from ConfigParser import SafeConfigParser, NoOptionError, NoSectionError
-from xml.dom import minidom
 from uuid import uuid4
 from logging import debug, info, warning, error
 from twisted.internet import defer, reactor
 from twisted.words.protocols.jabber import jid
-from twisted.python.failure import Failure
-from sat.tools.xml_tools import paramsXML2XMLUI
+from sat.core import exceptions
+from sat.core.constants import Const as C
 from sat.core.default_config import default_config
 from sat.memory.sqlite import SqliteStorage
 from sat.memory.persistent import PersistentDict
-from sat.core import exceptions
-
-SAVEFILE_DATABASE = "/sat.db"
-NO_SECURITY_LIMIT = -1
-INDIVIDUAL = "individual"
-GENERAL = "general"
+from sat.memory.params import Params
 
 
 class Sessions(object):
@@ -112,651 +105,6 @@
         return self._sessions.iterkeys()
 
 
-class Params(object):
-    """This class manage parameters with xml"""
-    ### TODO: add desciption in params
-
-    #TODO: move Watched in a plugin
-    #TODO: when priority is changed, a new presence stanza must be emitted
-    #TODO: int type (Priority should be int instead of string)
-    default_xml = u"""
-    <params>
-    <general>
-    </general>
-    <individual>
-        <category name="Connection" label="%(category_connection)s">
-            <param name="JabberID" value="name@example.org/SàT" type="string" />
-            <param name="Password" value="" type="password" />
-            <param name="Priority" value="50" type="string" />
-            <param name="Server" value="example.org" type="string" />
-            <param name="Port" value="5222" type="string" />
-            <param name="NewAccount" label="%(label_NewAccount)s" type="button" callback_id="registerNewAccount"/>
-            <param name="autoconnect" label="%(label_autoconnect)s" value="true" type="bool" />
-            <param name="autodisconnect" label="%(label_autodisconnect)s" value="false"  type="bool" />
-        </category>
-        <category name="Misc" label="%(category_misc)s">
-            <param name="Watched" value="test@Jabber.goffi.int" type="string" />
-        </category>
-    </individual>
-    </params>
-    """ % {
-        'category_connection': _("Connection"),
-        'label_NewAccount': _("Register new account"),
-        'label_autoconnect': _('Connect on frontend startup'),
-        'label_autodisconnect': _('Disconnect on frontend closure'),
-        'category_misc': _("Misc")
-    }
-
-    def load_default_params(self):
-        self.dom = minidom.parseString(Params.default_xml.encode('utf-8'))
-
-    def _mergeParams(self, source_node, dest_node):
-        """Look for every node in source_node and recursively copy them to dest if they don't exists"""
-
-        def getNodesMap(children):
-            ret = {}
-            for child in children:
-                if child.nodeType == child.ELEMENT_NODE:
-                    ret[(child.tagName, child.getAttribute('name'))] = child
-            return ret
-        source_map = getNodesMap(source_node.childNodes)
-        dest_map = getNodesMap(dest_node.childNodes)
-        source_set = set(source_map.keys())
-        dest_set = set(dest_map.keys())
-        to_add = source_set.difference(dest_set)
-
-        for node_key in to_add:
-            dest_node.appendChild(source_map[node_key].cloneNode(True))
-
-        to_recurse = source_set - to_add
-        for node_key in to_recurse:
-            self._mergeParams(source_map[node_key], dest_map[node_key])
-
-    def load_xml(self, xml_file):
-        """Load parameters template from file"""
-        self.dom = minidom.parse(xml_file)
-        default_dom = minidom.parseString(Params.default_xml.encode('utf-8'))
-        self._mergeParams(default_dom.documentElement, self.dom.documentElement)
-
-    def loadGenParams(self):
-        """Load general parameters data from storage
-        @return: deferred triggered once params are loaded"""
-        return self.storage.loadGenParams(self.params_gen)
-
-    def loadIndParams(self, profile, cache=None):
-        """Load individual parameters
-        set self.params cache or a temporary cache
-        @param profile: profile to load (*must exist*)
-        @param cache: if not None, will be used to store the value, as a short time cache
-        @return: deferred triggered once params are loaded"""
-        if cache is None:
-            self.params[profile] = {}
-        return self.storage.loadIndParams(self.params[profile] if cache is None else cache, profile)
-
-    def purgeProfile(self, profile):
-        """Remove cache data of a profile
-        @param profile: %(doc_profile)s"""
-        try:
-            del self.params[profile]
-        except KeyError:
-            error(_("Trying to purge cache of a profile not in memory: [%s]") % profile)
-
-    def save_xml(self, filename):
-        """Save parameters template to xml file"""
-        with open(filename, 'wb') as xml_file:
-            xml_file.write(self.dom.toxml('utf-8'))
-
-    def __init__(self, host, storage):
-        debug("Parameters init")
-        self.host = host
-        self.storage = storage
-        self.default_profile = None
-        self.params = {}
-        self.params_gen = {}
-        host.registerCallback(host.registerNewAccountCB, with_data=True, force_id="registerNewAccount")
-
-    def asyncCreateProfile(self, profile):
-        """Create a new profile
-        @param profile: name of the profile
-        @param callback: called when the profile actually exists in database and memory
-        @return: a Deferred instance
-        """
-        if self.storage.hasProfile(profile):
-            info(_('The profile name already exists'))
-            return defer.fail(Failure(exceptions.ConflictError))
-        if not self.host.trigger.point("ProfileCreation", profile):
-            return defer.fail(Failure(exceptions.CancelError))
-        return self.storage.createProfile(profile)
-
-    def asyncDeleteProfile(self, profile, force=False):
-        """Delete an existing profile
-        @param profile: name of the profile
-        @param force: force the deletion even if the profile is connected.
-        To be used for direct calls only (not through the bridge).
-        @return: a Deferred instance
-        """
-        if not self.storage.hasProfile(profile):
-            info(_('Trying to delete an unknown profile'))
-            return defer.fail(Failure(exceptions.ProfileUnknownError))
-        if not force and self.host.isConnected(profile):
-            info(_("Trying to delete a connected profile"))
-            return defer.fail(Failure(exceptions.ConnectedProfileError))
-        return self.storage.deleteProfile(profile)
-
-    def getProfileName(self, profile_key, return_profile_keys = False):
-        """return profile according to profile_key
-        @param profile_key: profile name or key which can be
-                            @ALL@ for all profiles
-                            @DEFAULT@ for default profile
-        @param return_profile_keys: if True, return unmanaged profile keys (like "@ALL@"). This keys must be managed by the caller
-        @return: requested profile name or emptry string if it doesn't exist"""
-        if profile_key == '@DEFAULT@':
-            default = self.host.memory.memory_data.get('Profile_default')
-            if not default:
-                info(_('No default profile, returning first one'))  # TODO: manage real default profile
-                try:
-                    default = self.host.memory.memory_data['Profile_default'] = self.storage.getProfilesList()[0]
-                except IndexError:
-                    info(_('No profile exist yet'))
-                    return ""
-            return default  # FIXME: temporary, must use real default value, and fallback to first one if it doesn't exists
-        elif profile_key == '@NONE@':
-            raise exceptions.ProfileNotSetError
-        elif return_profile_keys and profile_key in ["@ALL@"]:
-            return profile_key # this value must be managed by the caller
-        if not self.storage.hasProfile(profile_key):
-            info(_('Trying to access an unknown profile'))
-            return "" # FIXME: raise exceptions.ProfileUnknownError here (must be well checked, this method is used in lot of places)
-        return profile_key
-
-    def __get_unique_node(self, parent, tag, name):
-        """return node with given tag
-        @param parent: parent of nodes to check (e.g. documentElement)
-        @param tag: tag to check (e.g. "category")
-        @param name: name to check (e.g. "JID")
-        @return: node if it exist or None
-        """
-        for node in parent.childNodes:
-            if node.nodeName == tag and node.getAttribute("name") == name:
-                #the node already exists
-                return node
-        #the node is new
-        return None
-
-    def updateParams(self, xml, security_limit=NO_SECURITY_LIMIT, app=''):
-        """import xml in parameters, update if the param already exists
-        If security_limit is specified and greater than -1, the parameters
-        that have a security level greater than security_limit are skipped.
-        @param xml: parameters in xml form
-        @param security_limit: -1 means no security, 0 is the maximum security then the higher the less secure
-        @param app: name of the frontend registering the parameters or empty value
-        """
-        src_parent = minidom.parseString(xml.encode('utf-8')).documentElement
-
-        def pre_process_app_node(src_parent, security_limit, app):
-            """Parameters that are registered from a frontend must be checked"""
-            to_remove = []
-            for type_node in src_parent.childNodes:
-                if type_node.nodeName != INDIVIDUAL:
-                    to_remove.append(type_node)  # accept individual parameters only
-                    continue
-                for cat_node in type_node.childNodes:
-                    if cat_node.nodeName != 'category':
-                        to_remove.append(cat_node)
-                        continue
-                    to_remove_count = 0  # count the params to be removed from current category
-                    for node in cat_node.childNodes:
-                        if node.nodeName != "param" or not self.checkSecurityLimit(node, security_limit):
-                            to_remove.append(node)
-                            to_remove_count += 1
-                            continue
-                        node.setAttribute('app', app)
-                    if len(cat_node.childNodes) == to_remove_count:  # remove empty category
-                        for dummy in xrange(0, to_remove_count):
-                            to_remove.pop()
-                        to_remove.append(cat_node)
-            for node in to_remove:
-                node.parentNode.removeChild(node)
-
-        def import_node(tgt_parent, src_parent):
-            for child in src_parent.childNodes:
-                if child.nodeName == '#text':
-                    continue
-                node = self.__get_unique_node(tgt_parent, child.nodeName, child.getAttribute("name"))
-                if not node:  # The node is new
-                    tgt_parent.appendChild(child)
-                else:
-                    if child.nodeName == "param":
-                        # The child updates an existing parameter, we replace the node
-                        tgt_parent.replaceChild(child, node)
-                    else:
-                        # the node already exists, we recurse 1 more level
-                        import_node(node, child)
-
-        if app:
-            pre_process_app_node(src_parent, security_limit, app)
-        import_node(self.dom.documentElement, src_parent)
-
-    def paramsRegisterApp(self, xml, security_limit, app):
-        """Register frontend's specific parameters
-        If security_limit is specified and greater than -1, the parameters
-        that have a security level greater than security_limit are skipped.
-        @param xml: XML definition of the parameters to be added
-        @param security_limit: -1 means no security, 0 is the maximum security then the higher the less secure
-        @param app: name of the frontend registering the parameters
-        """
-        if not app:
-            warning(_("Trying to register frontends parameters with no specified app: aborted"))
-            return
-        if not hasattr(self, "frontends_cache"):
-            self.frontends_cache = []
-        if app in self.frontends_cache:
-            debug(_("Trying to register twice frontends parameters for %(app)s: aborted" % {"app": app}))
-            return
-        self.frontends_cache.append(app)
-        self.updateParams(xml, security_limit, app)
-        debug("Frontends parameters registered for %(app)s" % {'app': app})
-
-    def __default_ok(self, value, name, category):
-        #FIXME: will not work with individual parameters
-        self.setParam(name, value, category)
-
-    def __default_ko(self, failure, name, category):
-        error(_("Can't determine default value for [%(category)s/%(name)s]: %(reason)s") % {'category': category, 'name': name, 'reason': str(failure.value)})
-
-    def setDefault(self, name, category, callback, errback=None):
-        """Set default value of parameter
-        'default_cb' attibute of parameter must be set to 'yes'
-        @param name: name of the parameter
-        @param category: category of the parameter
-        @param callback: must return a string with the value (use deferred if needed)
-        @param errback: must manage the error with args failure, name, category
-        """
-        #TODO: send signal param update if value changed
-        #TODO: manage individual paramaters
-        debug ("setDefault called for %(category)s/%(name)s" % {"category": category, "name": name})
-        node = self._getParamNode(name, category, '@ALL@')
-        if not node:
-            error(_("Requested param [%(name)s] in category [%(category)s] doesn't exist !") % {'name': name, 'category': category})
-            return
-        if node[1].getAttribute('default_cb') == 'yes':
-            # del node[1].attributes['default_cb'] # default_cb is not used anymore as a flag to know if we have to set the default value,
-                                                   # and we can still use it later e.g. to call a generic setDefault method
-            value = self._getParam(category, name, GENERAL)
-            if value is None: # no value set by the user: we have the default value
-                debug ("Default value to set, using callback")
-                d = defer.maybeDeferred(callback)
-                d.addCallback(self.__default_ok, name, category)
-                d.addErrback(errback or self.__default_ko, name, category)
-
-    def _getAttr(self, node, attr, value):
-        """ get attribute value
-        @param node: XML param node
-        @param attr: name of the attribute to get (e.g.: 'value' or 'type')
-        @param value: user defined value"""
-        if attr == 'value':
-            value_to_use = value if value is not None else node.getAttribute(attr)  # we use value (user defined) if it exist, else we use node's default value
-            if node.getAttribute('type') == 'bool':
-                return value_to_use.lower() not in ('false', '0', 'no')
-            return value_to_use
-        return node.getAttribute(attr)
-
-    def __type_to_string(self, result):
-        """ convert result to string, according to its type """
-        if isinstance(result, bool):
-            return "true" if result else "false"
-        return result
-
-    def getStringParamA(self, name, category, attr="value", profile_key="@NONE@"):
-        """ Same as getParamA but for bridge: convert non string value to string """
-        return self.__type_to_string(self.getParamA(name, category, attr, profile_key))
-
-    def getParamA(self, name, category, attr="value", profile_key="@NONE@"):
-        """Helper method to get a specific attribute
-           @param name: name of the parameter
-           @param category: category of the parameter
-           @param attr: name of the attribute (default: "value")
-           @param profile: owner of the param (@ALL@ for everyone)
-
-           @return: attribute"""
-        #FIXME: looks really dirty and buggy, need to be reviewed/refactored
-        node = self._getParamNode(name, category)
-        if not node:
-            error(_("Requested param [%(name)s] in category [%(category)s] doesn't exist !") % {'name': name, 'category': category})
-            raise exceptions.NotFound
-
-        if node[0] == GENERAL:
-            value = self._getParam(category, name, GENERAL)
-            return self._getAttr(node[1], attr, value)
-
-        assert node[0] == INDIVIDUAL
-
-        profile = self.getProfileName(profile_key)
-        if not profile:
-            error(_('Requesting a param for an non-existant profile'))
-            raise exceptions.ProfileUnknownError
-
-        if profile not in self.params:
-            error(_('Requesting synchronous param for not connected profile'))
-            raise exceptions.NotConnectedProfileError(profile)
-
-        if attr == "value":
-            value = self._getParam(category, name, profile=profile)
-            return self._getAttr(node[1], attr, value)
-
-    def asyncGetStringParamA(self, name, category, attr="value", security_limit=NO_SECURITY_LIMIT, profile_key="@NONE@"):
-        d = self.asyncGetParamA(name, category, attr, security_limit, profile_key)
-        d.addCallback(self.__type_to_string)
-        return d
-
-    def asyncGetParamA(self, name, category, attr="value", security_limit=NO_SECURITY_LIMIT, profile_key="@NONE@"):
-        """Helper method to get a specific attribute
-           @param name: name of the parameter
-           @param category: category of the parameter
-           @param attr: name of the attribute (default: "value")
-           @param profile: owner of the param (@ALL@ for everyone)"""
-        node = self._getParamNode(name, category)
-        if not node:
-            error(_("Requested param [%(name)s] in category [%(category)s] doesn't exist !") % {'name': name, 'category': category})
-            return None
-
-        if not self.checkSecurityLimit(node[1], security_limit):
-            warning(_("Trying to get parameter '%(param)s' in category '%(cat)s' without authorization!!!"
-                      % {'param': name, 'cat': category}))
-            return None
-
-        if node[0] == GENERAL:
-            value = self._getParam(category, name, GENERAL)
-            return defer.succeed(self._getAttr(node[1], attr, value))
-
-        assert node[0] == INDIVIDUAL
-
-        profile = self.getProfileName(profile_key)
-        if not profile:
-            error(_('Requesting a param for a non-existant profile'))
-            return defer.fail()
-
-        if attr != "value":
-            return defer.succeed(node[1].getAttribute(attr))
-        try:
-            value = self._getParam(category, name, profile=profile)
-            return defer.succeed(self._getAttr(node[1], attr, value))
-        except exceptions.ProfileNotInCacheError:
-            #We have to ask data to the storage manager
-            d = self.storage.getIndParam(category, name, profile)
-            return d.addCallback(lambda value: self._getAttr(node[1], attr, value))
-
-    def _getParam(self, category, name, type_=INDIVIDUAL, cache=None, profile="@NONE@"):
-        """Return the param, or None if it doesn't exist
-        @param category: param category
-        @param name: param name
-        @param type_: GENERAL or INDIVIDUAL
-        @param cache: temporary cache, to use when profile is not logged
-        @param profile: the profile name (not profile key, i.e. name and not something like @DEFAULT@)
-        @return: param value or None if it doesn't exist
-        """
-        if type_ == GENERAL:
-            if (category, name) in self.params_gen:
-                return self.params_gen[(category, name)]
-            return None  # This general param has the default value
-        assert (type_ == INDIVIDUAL)
-        if profile == "@NONE@":
-            raise exceptions.ProfileNotSetError
-        if profile in self.params:
-            cache = self.params[profile]  # if profile is in main cache, we use it,
-                                          # ignoring the temporary cache
-        elif cache is None:  # else we use the temporary cache if it exists, or raise an exception
-            raise exceptions.ProfileNotInCacheError
-        if (category, name) not in cache:
-            return None
-        return cache[(category, name)]
-
-    def __constructProfileXml(self, security_limit, app, profile):
-        """Construct xml for asked profile, filling values when needed
-        /!\ as noticed in doc, don't forget to unlink the minidom.Document
-        @param security_limit: NO_SECURITY_LIMIT (-1) to return all the params.
-        Otherwise sole the params which have a security level defined *and*
-        lower or equal to the specified value are returned.
-        @param app: name of the frontend requesting the parameters, or '' to get all parameters
-        @param profile: profile name (not key !)
-        @return: a deferred that fire a minidom.Document of the profile xml (cf warning above)
-        """
-
-        def checkNode(node):
-            """Check the node against security_limit and app"""
-            return self.checkSecurityLimit(node, security_limit) and self.checkApp(node, app)
-
-        def constructProfile(ignore, profile_cache):
-            # init the result document
-            prof_xml = minidom.parseString('<params/>')
-            cache = {}
-
-            for type_node in self.dom.documentElement.childNodes:
-                if type_node.nodeName != GENERAL and type_node.nodeName != INDIVIDUAL:
-                    continue
-                # we use all params, general and individual
-                for cat_node in type_node.childNodes:
-                    if cat_node.nodeName != 'category':
-                        continue
-                    category = cat_node.getAttribute('name')
-                    dest_params = {}  # result (merged) params for category
-                    if category not in cache:
-                        # we make a copy for the new xml
-                        cache[category] = dest_cat = cat_node.cloneNode(True)
-                        for node in dest_cat.childNodes:
-                            if node.nodeName != "param":
-                                continue
-                            if not checkNode(node):
-                                dest_cat.removeChild(node)
-                                continue
-                            dest_params[node.getAttribute('name')] = node
-                        new_node = True
-                    else:
-                        # It's not a new node, we use the previously cloned one
-                        dest_cat = cache[category]
-                        new_node = False
-                    params = cat_node.getElementsByTagName("param")
-
-                    for param_node in params:
-                        # we have to merge new params (we are parsing individual parameters, we have to add them
-                        # to the previously parsed general ones)
-                        name = param_node.getAttribute('name')
-                        if not checkNode(param_node):
-                            continue
-                        if name not in dest_params:
-                            # this is reached when a previous category exists
-                            dest_params[name] = param_node.cloneNode(True)
-                            dest_cat.appendChild(dest_params[name])
-
-                        profile_value = self._getParam(category,
-                                                        name, type_node.nodeName,
-                                                        cache=profile_cache, profile=profile)
-                        if profile_value is not None:
-                            # there is a value for this profile, we must change the default
-                            dest_params[name].setAttribute('value', profile_value)
-                    if new_node:
-                        prof_xml.documentElement.appendChild(dest_cat)
-
-            to_remove = []
-            for cat_node in prof_xml.documentElement.childNodes:
-                # we remove empty categories
-                if cat_node.getElementsByTagName("param").length == 0:
-                    to_remove.append(cat_node)
-            for node in to_remove:
-                prof_xml.documentElement.removeChild(node)
-            return prof_xml
-
-        if profile in self.params:
-            d = defer.succeed(None)
-            profile_cache = self.params[profile]
-        else:
-            #profile is not in cache, we load values in a short time cache
-            profile_cache = {}
-            d = self.loadIndParams(profile, profile_cache)
-
-        return d.addCallback(constructProfile, profile_cache)
-
-    def getParamsUI(self, security_limit, app, profile_key):
-        """
-        @param security_limit: NO_SECURITY_LIMIT (-1) to return all the params.
-        Otherwise sole the params which have a security level defined *and*
-        lower or equal to the specified value are returned.
-        @param app: name of the frontend requesting the parameters, or '' to get all parameters
-        @param profile_key: Profile key which can be either a magic (eg: @DEFAULT@) or the name of an existing profile.
-        @return: a SàT XMLUI for parameters
-        """
-        profile = self.getProfileName(profile_key)
-        if not profile:
-            error(_("Asking params for inexistant profile"))
-            return ""
-        d = self.getParams(security_limit, app, profile)
-        return d.addCallback(lambda param_xml: paramsXML2XMLUI(param_xml))
-
-    def getParams(self, security_limit, app, profile_key):
-        """Construct xml for asked profile, take params xml as skeleton
-        @param security_limit: NO_SECURITY_LIMIT (-1) to return all the params.
-        Otherwise sole the params which have a security level defined *and*
-        lower or equal to the specified value are returned.
-        @param app: name of the frontend requesting the parameters, or '' to get all parameters
-        @param profile_key: Profile key which can be either a magic (eg: @DEFAULT@) or the name of an existing profile.
-        @return: XML of parameters
-        """
-        profile = self.getProfileName(profile_key)
-        if not profile:
-            error(_("Asking params for inexistant profile"))
-            return defer.succeed("")
-
-        def returnXML(prof_xml):
-            return_xml = prof_xml.toxml()
-            prof_xml.unlink()
-            return '\n'.join((line for line in return_xml.split('\n') if line))
-
-        return self.__constructProfileXml(security_limit, app, profile).addCallback(returnXML)
-
-    def getParamsForCategory(self, category, security_limit, app, profile_key):
-        """
-        @param category: the desired category
-        @param security_limit: NO_SECURITY_LIMIT (-1) to return all the params.
-        Otherwise sole the params which have a security level defined *and*
-        lower or equal to the specified value are returned.
-        @param app: name of the frontend requesting the parameters, or '' to get all parameters
-        @param profile_key: Profile key which can be either a magic (eg: @DEFAULT@) or the name of an existing profile.
-        @return: node's xml for selected category
-        """
-        #TODO: manage category of general type (without existant profile)
-        profile = self.getProfileName(profile_key)
-        if not profile:
-            error(_("Asking params for inexistant profile"))
-            return ""
-
-        def returnCategoryXml(prof_xml):
-            for node in prof_xml.getElementsByTagName("category"):
-                if node.nodeName == "category" and node.getAttribute("name") == category:
-                    result = node.toxml()
-                    prof_xml.unlink()
-                    return result
-
-            prof_xml.unlink()
-            return "<category />"
-
-        d = self.__constructProfileXml(security_limit, app, profile)
-        return d.addCallback(returnCategoryXml)
-
-    def _getParamNode(self, name, category, type_="@ALL@"):  # FIXME: is type_ useful ?
-        """Return a node from the param_xml
-        @param name: name of the node
-        @param category: category of the node
-        @type_: keyword for search:
-                                    @ALL@ search everywhere
-                                    @GENERAL@ only search in general type
-                                    @INDIVIDUAL@ only search in individual type
-        @return: a tuple with the node type and the the node, or None if not found"""
-
-        for type_node in self.dom.documentElement.childNodes:
-            if (((type_ == "@ALL@" or type_ == "@GENERAL@") and type_node.nodeName == GENERAL)
-                    or ((type_ == "@ALL@" or type_ == "@INDIVIDUAL@") and type_node.nodeName == INDIVIDUAL)):
-                for node in type_node.getElementsByTagName('category'):
-                    if node.getAttribute("name") == category:
-                        params = node.getElementsByTagName("param")
-                        for param in params:
-                            if param.getAttribute("name") == name:
-                                return (type_node.nodeName, param)
-        return None
-
-    def getParamsCategories(self):
-        """return the categories availables"""
-        categories = []
-        for cat in self.dom.getElementsByTagName("category"):
-            name = cat.getAttribute("name")
-            if name not in categories:
-                categories.append(cat.getAttribute("name"))
-        return categories
-
-    def setParam(self, name, value, category, security_limit=NO_SECURITY_LIMIT, profile_key='@NONE@'):
-        """Set a parameter, return None if the parameter is not in param xml"""
-        #TODO: use different behaviour depending of the data type (e.g. password encrypted)
-        if profile_key != "@NONE@":
-            profile = self.getProfileName(profile_key)
-            if not profile:
-                error(_('Trying to set parameter for an unknown profile'))
-                return  # TODO: throw an error
-
-        node = self._getParamNode(name, category, '@ALL@')
-        if not node:
-            error(_('Requesting an unknown parameter (%(category)s/%(name)s)')
-                  % {'category': category, 'name': name})
-            return
-
-        if not self.checkSecurityLimit(node[1], security_limit):
-            warning(_("Trying to set parameter '%(param)s' in category '%(cat)s' without authorization!!!"
-                          % {'param': name, 'cat': category}))
-            return
-
-        if node[0] == GENERAL:
-            self.params_gen[(category, name)] = value
-            self.storage.setGenParam(category, name, value)
-            for profile in self.storage.getProfilesList():
-                if self.host.isConnected(profile):
-                    self.host.bridge.paramUpdate(name, value, category, profile)
-                    self.host.trigger.point("paramUpdateTrigger", name, value, category, node[0], profile)
-            return
-
-        assert (node[0] == INDIVIDUAL)
-        assert (profile_key != "@NONE@")
-
-        type_ = node[1].getAttribute("type")
-        if type_ == "button":
-            print "clique", node.toxml()
-        else:
-            if self.host.isConnected(profile):  # key can not exists if profile is not connected
-                self.params[profile][(category, name)] = value
-            self.host.bridge.paramUpdate(name, value, category, profile)
-            self.host.trigger.point("paramUpdateTrigger", name, value, category, node[0], profile)
-            self.storage.setIndParam(category, name, value, profile)
-
-    def checkSecurityLimit(self, node, security_limit):
-        """Check the given node against the given security limit.
-        The value NO_SECURITY_LIMIT (-1) means that everything is allowed.
-        @return: True if this node can be accessed with the given security limit.
-        """
-        if security_limit < 0:
-            return True
-        if node.hasAttribute("security"):
-            if int(node.getAttribute("security")) <= security_limit:
-                return True
-        return False
-
-    def checkApp(self, node, app):
-        """Check the given node against the given app.
-        @param node: parameter node
-        @param app: name of the frontend requesting the parameters, or '' to get all parameters
-        @return: True if this node concerns the given app.
-        """
-        if not app or not node.hasAttribute("app"):
-            return True
-        return node.getAttribute("app") == app
-
-
 class Memory(object):
     """This class manage all persistent informations"""
 
@@ -770,7 +118,7 @@
         self.server_features = {}  # used to store discovery's informations
         self.server_identities = {}
         self.config = self.parseMainConf()
-        host.setConst('savefile_database', SAVEFILE_DATABASE)
+        host.setConst('savefile_database', C.SAVEFILE_DATABASE)
         database_file = os.path.expanduser(self.getConfig('', 'local_dir') +
                                            self.host.getConst('savefile_database'))
         self.storage = SqliteStorage(database_file, host.__version__)
@@ -1131,31 +479,31 @@
     def getParamA(self, name, category, attr="value", profile_key='@NONE@'):
         return self.params.getParamA(name, category, attr, profile_key)
 
-    def asyncGetParamA(self, name, category, attr="value", security_limit=NO_SECURITY_LIMIT, profile_key='@NONE@'):
+    def asyncGetParamA(self, name, category, attr="value", security_limit=C.NO_SECURITY_LIMIT, profile_key='@NONE@'):
         return self.params.asyncGetParamA(name, category, attr, security_limit, profile_key)
 
-    def asyncGetStringParamA(self, name, category, attr="value", security_limit=NO_SECURITY_LIMIT, profile_key='@NONE@'):
+    def asyncGetStringParamA(self, name, category, attr="value", security_limit=C.NO_SECURITY_LIMIT, profile_key='@NONE@'):
         return self.params.asyncGetStringParamA(name, category, attr, security_limit, profile_key)
 
-    def getParamsUI(self, security_limit=NO_SECURITY_LIMIT, app='', profile_key='@NONE@'):
+    def getParamsUI(self, security_limit=C.NO_SECURITY_LIMIT, app='', profile_key='@NONE@'):
         return self.params.getParamsUI(security_limit, app, profile_key)
 
-    def getParams(self, security_limit=NO_SECURITY_LIMIT, app='', profile_key='@NONE@'):
+    def getParams(self, security_limit=C.NO_SECURITY_LIMIT, app='', profile_key='@NONE@'):
         return self.params.getParams(security_limit, app, profile_key)
 
-    def getParamsForCategory(self, category, security_limit=NO_SECURITY_LIMIT, app='', profile_key='@NONE@'):
+    def getParamsForCategory(self, category, security_limit=C.NO_SECURITY_LIMIT, app='', profile_key='@NONE@'):
         return self.params.getParamsForCategory(category, security_limit, app, profile_key)
 
     def getParamsCategories(self):
         return self.params.getParamsCategories()
 
-    def setParam(self, name, value, category, security_limit=NO_SECURITY_LIMIT, profile_key='@NONE@'):
+    def setParam(self, name, value, category, security_limit=C.NO_SECURITY_LIMIT, profile_key='@NONE@'):
         return self.params.setParam(name, value, category, security_limit, profile_key)
 
     def updateParams(self, xml):
         return self.params.updateParams(xml)
 
-    def paramsRegisterApp(self, xml, security_limit=NO_SECURITY_LIMIT, app=''):
+    def paramsRegisterApp(self, xml, security_limit=C.NO_SECURITY_LIMIT, app=''):
         return self.params.paramsRegisterApp(xml, security_limit, app)
 
     def setDefault(self, name, category, callback, errback=None):