view src/core/constants.py @ 2109:85f3e12e984d

core (memory/cache): file caching handling, first draft: instead of having file caching handled individually by plugins, a generic module has been added in memory. - Cache can be global or associated to a profile. In the later case, client.cache can be used. - Cache are managed with unique ids (which can be any unique unicode, hash uuid, or something else). - To know if a file is in cache, getFilePath is used: if the file is in cache, its absolute path is returned, else None is returned. - To cache a file, cacheData is used with at list the source of cache (most of time plugin import name), and unique id. The method return file opened in binary writing mode (so cacheData can - and should - be used with "with" statement). - 2 files will be created: a metadata file (named after the unique id), and the actual file. - each file has a end of life time, after it, the cache is invalidated and the file must be requested again.
author Goffi <goffi@goffi.org>
date Thu, 05 Jan 2017 20:23:38 +0100
parents c96fe007ca41
children c42aab22c2c0
line wrap: on
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#!/usr/bin/env python2
# -*- coding: utf-8 -*-

# SàT: a XMPP client
# Copyright (C) 2009-2016 Jérôme Poisson (goffi@goffi.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.

# 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/>.

try:
    from xdg import BaseDirectory
    from os.path import expanduser, realpath
except ImportError:
    BaseDirectory = None


class Const(object):

    ## Application ##
    APP_NAME = u'Salut à Toi'
    APP_NAME_SHORT = u'SàT'
    APP_NAME_FILE = u'sat'
    APP_NAME_FULL = u'%s (%s)' % (APP_NAME_SHORT, APP_NAME)
    APP_VERSION = u'0.7.0D'  # Please add 'D' at the end for dev versions
    APP_URL = u'http://salut-a-toi.org'


    ## Runtime ##
    PLUGIN_EXT = "py"

    ## Main config ##
    DEFAULT_BRIDGE = 'dbus'


    ## Protocol ##
    XMPP_C2S_PORT = 5222
    XMPP_KEEP_ALIFE = 180
    XMPP_MAX_RETRIES = 2


    ## Parameters ##
    NO_SECURITY_LIMIT = -1
    INDIVIDUAL = "individual"
    GENERAL = "general"
    # General parameters
    HISTORY_LIMIT = "History"
    SHOW_OFFLINE_CONTACTS = "Offline contacts"
    SHOW_EMPTY_GROUPS = "Empty groups"
    # Parameters related to connection
    FORCE_SERVER_PARAM = "Force server"
    FORCE_PORT_PARAM = "Force port"
    # Parameters related to encryption
    PROFILE_PASS_PATH = ('General', 'Password')
    MEMORY_CRYPTO_NAMESPACE = 'crypto'  # for the private persistent binary dict
    MEMORY_CRYPTO_KEY = 'personal_key'
    # Parameters for static blog pages
    STATIC_BLOG_KEY = "Blog page"
    STATIC_BLOG_PARAM_TITLE = "Title"
    STATIC_BLOG_PARAM_BANNER = "Banner"
    STATIC_BLOG_PARAM_KEYWORDS = "Keywords"
    STATIC_BLOG_PARAM_DESCRIPTION = "Description"


    ## Menus ##
    MENU_GLOBAL = "GLOBAL"
    MENU_ROOM = "ROOM"
    MENU_SINGLE = "SINGLE"
    MENU_JID_CONTEXT = "JID_CONTEXT"
    MENU_ROSTER_JID_CONTEXT = "ROSTER_JID_CONTEXT"
    MENU_ROSTER_GROUP_CONTEXT = "MENU_ROSTER_GROUP_CONTEXT"
    MENU_ROOM_OCCUPANT_CONTEXT = "MENU_ROOM_OCCUPANT_CONTEXT"


    ## Profile and entities ##
    PROF_KEY_NONE = '@NONE@'
    PROF_KEY_DEFAULT = '@DEFAULT@'
    PROF_KEY_ALL = '@ALL@'
    ENTITY_ALL = '@ALL@'
    ENTITY_ALL_RESOURCES = '@ALL_RESOURCES@'
    ENTITY_MAIN_RESOURCE = '@MAIN_RESOURCE@'
    ENTITY_CAP_HASH = 'CAP_HASH'
    ENTITY_TYPE = 'TYPE'


    ## Roster jids selection ##
    PUBLIC = 'PUBLIC'
    ALL = 'ALL' # ALL means all known contacts, while PUBLIC means everybody, known or not
    GROUP = 'GROUP'
    JID = 'JID'


    ## Messages ##
    MESS_TYPE_INFO = 'info'
    MESS_TYPE_CHAT = 'chat'
    MESS_TYPE_ERROR = 'error'
    MESS_TYPE_GROUPCHAT = 'groupchat'
    MESS_TYPE_HEADLINE = 'headline'
    MESS_TYPE_NORMAL = 'normal'
    MESS_TYPE_AUTO = 'auto'  # magic value to let the backend guess the type
    MESS_TYPE_STANDARD = (MESS_TYPE_CHAT, MESS_TYPE_ERROR, MESS_TYPE_GROUPCHAT, MESS_TYPE_HEADLINE, MESS_TYPE_NORMAL)
    MESS_TYPE_ALL = MESS_TYPE_STANDARD + (MESS_TYPE_INFO, MESS_TYPE_AUTO)

    MESS_EXTRA_INFO = "info_type"


    ## Presence ##
    PRESENCE_UNAVAILABLE = 'unavailable'
    PRESENCE_SHOW_AWAY = 'away'
    PRESENCE_SHOW_CHAT = 'chat'
    PRESENCE_SHOW_DND = 'dnd'
    PRESENCE_SHOW_XA = 'xa'
    PRESENCE_SHOW = 'show'
    PRESENCE_STATUSES = 'statuses'
    PRESENCE_STATUSES_DEFAULT = 'default'
    PRESENCE_PRIORITY = 'priority'


    ## Common namespaces ##
    NS_XML = 'http://www.w3.org/XML/1998/namespace'
    NS_CLIENT = 'jabber:client'
    NS_FORWARD = 'urn:xmpp:forward:0'
    NS_DELAY = 'urn:xmpp:delay'
    NS_XHTML = 'http://www.w3.org/1999/xhtml'

    ## Directories ##
    CACHE_DIR = u'cache'


    ## Configuration ##
    if BaseDirectory:  # skipped when xdg module is not available (should not happen in backend)
        if "org.goffi.cagou.cagou" in BaseDirectory.__file__:
            # FIXME: hack to make config read from the right location on Android
            # TODO: fix it in a more proper way
            BaseDirectory = None
            DEFAULT_CONFIG = {
                'local_dir': '/data/data/org.goffi.cagou.cagou/',
                'media_dir': '/data/data/org.goffi.cagou.cagou/files/media',
                'pid_dir': '%(local_dir)s',
                'log_dir': '%(local_dir)s',
            }
            CONFIG_FILES = ['/data/data/org.goffi.cagou.cagou/files/' + APP_NAME_FILE + '.conf']
        else:

            ## Configuration ##
            DEFAULT_CONFIG = {
                'media_dir': '/usr/share/' + APP_NAME_FILE + '/media',
                'local_dir': BaseDirectory.save_data_path(APP_NAME_FILE),
                'pid_dir': '%(local_dir)s',
                'log_dir': '%(local_dir)s',
            }

            # List of the configuration filenames sorted by ascending priority
            CONFIG_FILES = [realpath(expanduser(path) + APP_NAME_FILE + '.conf') for path in
                            ['/etc/', '~/', '~/.', '', '.'] +
                            ['%s/' % path for path in list(BaseDirectory.load_config_paths(APP_NAME_FILE))]
                           ]


    ## Plugins ##

    # Types
    PLUG_TYPE_XEP = "XEP"
    PLUG_TYPE_MISC = "MISC"
    PLUG_TYPE_EXP = "EXP"
    PLUG_TYPE_SEC = "SEC"
    PLUG_TYPE_SYNTAXE = "SYNTAXE"
    PLUG_TYPE_BLOG = "BLOG"


    # names of widely used plugins
    TEXT_CMDS = 'TEXT-COMMANDS'

    # PubSub event categories
    PS_PEP = "PEP"
    PS_MICROBLOG = "MICROBLOG"

    # PubSub
    PS_PUBLISH = "publish"
    PS_RETRACT = "retract" # used for items
    PS_DELETE = "delete" #used for nodes
    PS_ITEM = "item"
    PS_ITEMS = "items" # Can contain publish and retract items
    PS_EVENTS = (PS_ITEMS, PS_DELETE)


    ## XMLUI ##
    XMLUI_WINDOW = 'window'
    XMLUI_POPUP = 'popup'
    XMLUI_FORM = 'form'
    XMLUI_PARAM = 'param'
    XMLUI_DIALOG = 'dialog'
    XMLUI_DIALOG_CONFIRM = "confirm"
    XMLUI_DIALOG_MESSAGE = "message"
    XMLUI_DIALOG_NOTE = "note"
    XMLUI_DIALOG_FILE = "file"
    XMLUI_DATA_ANSWER = "answer"
    XMLUI_DATA_CANCELLED = "cancelled"
    XMLUI_DATA_TYPE = "type"
    XMLUI_DATA_MESS = "message"
    XMLUI_DATA_LVL = "level"
    XMLUI_DATA_LVL_INFO = "info"
    XMLUI_DATA_LVL_WARNING = "warning"
    XMLUI_DATA_LVL_ERROR = "error"
    XMLUI_DATA_LVL_DEFAULT = XMLUI_DATA_LVL_INFO
    XMLUI_DATA_LVLS = (XMLUI_DATA_LVL_INFO, XMLUI_DATA_LVL_WARNING, XMLUI_DATA_LVL_ERROR)
    XMLUI_DATA_BTNS_SET = "buttons_set"
    XMLUI_DATA_BTNS_SET_OKCANCEL = "ok/cancel"
    XMLUI_DATA_BTNS_SET_YESNO = "yes/no"
    XMLUI_DATA_BTNS_SET_DEFAULT = XMLUI_DATA_BTNS_SET_OKCANCEL
    XMLUI_DATA_FILETYPE = 'filetype'
    XMLUI_DATA_FILETYPE_FILE = "file"
    XMLUI_DATA_FILETYPE_DIR = "dir"
    XMLUI_DATA_FILETYPE_DEFAULT = XMLUI_DATA_FILETYPE_FILE


    ## Logging ##
    LOG_LVL_DEBUG = 'DEBUG'
    LOG_LVL_INFO = 'INFO'
    LOG_LVL_WARNING = 'WARNING'
    LOG_LVL_ERROR = 'ERROR'
    LOG_LVL_CRITICAL = 'CRITICAL'
    LOG_LEVELS = (LOG_LVL_DEBUG, LOG_LVL_INFO, LOG_LVL_WARNING, LOG_LVL_ERROR, LOG_LVL_CRITICAL)
    LOG_BACKEND_STANDARD = 'standard'
    LOG_BACKEND_TWISTED = 'twisted'
    LOG_BACKEND_BASIC = 'basic'
    LOG_BACKEND_CUSTOM = 'custom'
    LOG_BASE_LOGGER = 'root'
    LOG_TWISTED_LOGGER = 'twisted'
    LOG_OPT_SECTION = 'DEFAULT' # section of sat.conf where log options should be
    LOG_OPT_PREFIX = 'log_'
    # (option_name, default_value) tuples
    LOG_OPT_COLORS = ('colors', 'true') # true for auto colors, force to have colors even if stdout is not a tty, false for no color
    LOG_OPT_TAINTS_DICT = ('levels_taints_dict', {
        LOG_LVL_DEBUG: ('cyan',),
        LOG_LVL_INFO: (),
        LOG_LVL_WARNING: ('yellow',),
        LOG_LVL_ERROR: ('red', 'blink', r'/!\ ', 'blink_off'),
        LOG_LVL_CRITICAL: ('bold', 'red', 'Guru Meditation ', 'normal_weight')
        })
    LOG_OPT_LEVEL = ('level', 'info')
    LOG_OPT_FORMAT = ('fmt', '%(message)s') # similar to logging format.
    LOG_OPT_LOGGER = ('logger', '') # regex to filter logger name
    LOG_OPT_OUTPUT_SEP = '//'
    LOG_OPT_OUTPUT_DEFAULT = 'default'
    LOG_OPT_OUTPUT_MEMORY = 'memory'
    LOG_OPT_OUTPUT_MEMORY_LIMIT = 50
    LOG_OPT_OUTPUT_FILE = 'file' # file is implicit if only output
    LOG_OPT_OUTPUT = ('output', LOG_OPT_OUTPUT_SEP + LOG_OPT_OUTPUT_DEFAULT) # //default = normal output (stderr or a file with twistd), path/to/file for a file (must be the first if used), //memory for memory (options can be put in parenthesis, e.g.: //memory(500) for a 500 lines memory)


    ## action constants ##
    META_TYPE_FILE = "file"
    META_TYPE_OVERWRITE = "overwrite"


    ## HARD-CODED ACTIONS IDS (generated with uuid.uuid4) ##
    AUTHENTICATE_PROFILE_ID = u'b03bbfa8-a4ae-4734-a248-06ce6c7cf562'
    CHANGE_XMPP_PASSWD_ID = u'878b9387-de2b-413b-950f-e424a147bcd0'


    ## Text values ##
    BOOL_TRUE = "true"
    BOOL_FALSE = "false"


    ## Special values used in bridge methods calls ##
    HISTORY_LIMIT_DEFAULT = -1
    HISTORY_LIMIT_NONE = -2


    ## Misc ##
    SAVEFILE_DATABASE = APP_NAME_FILE + ".db"
    IQ_SET = '/iq[@type="set"]'
    ENV_PREFIX = 'SAT_' # Prefix used for environment variables
    IGNORE = 'ignore'
    NO_LIMIT = -1 # used in bridge when a integer value is expected
    DEFAULT_MAX_AGE = 1209600 # default max age of cached files, in seconds


    ## ANSI escape sequences ##
    # XXX: used for logging
    # XXX: they will be probably moved in a dedicated module in the future
    ANSI_RESET = '\033[0m'
    ANSI_NORMAL_WEIGHT = '\033[22m'
    ANSI_FG_BLACK, ANSI_FG_RED, ANSI_FG_GREEN, ANSI_FG_YELLOW, ANSI_FG_BLUE, ANSI_FG_MAGENTA, ANSI_FG_CYAN, ANSI_FG_WHITE = ('\033[3%dm' % nb for nb in xrange(8))
    ANSI_BOLD = '\033[1m'
    ANSI_BLINK = '\033[5m'
    ANSI_BLINK_OFF = '\033[25m'

    @classmethod
    def LOG_OPTIONS(cls):
        """Return options checked for logs"""
        # XXX: we use a classmethod so we can use Const inheritance to change default options
        return(cls.LOG_OPT_COLORS, cls.LOG_OPT_TAINTS_DICT, cls.LOG_OPT_LEVEL, cls.LOG_OPT_FORMAT, cls.LOG_OPT_LOGGER, cls.LOG_OPT_OUTPUT)

    @classmethod
    def bool(cls, value):
        """@return (bool): bool value for associated constant"""
        assert isinstance(value, basestring)
        return value.lower() in (cls.BOOL_TRUE, "1")

    @classmethod
    def boolConst(cls, value):
        """@return (str): constant associated to bool value"""
        assert isinstance(value, bool)
        return cls.BOOL_TRUE if value else cls.BOOL_FALSE