-- Prosody IM
--- Copyright (C) 2008-2009 Matthew Wild
--- Copyright (C) 2008-2009 Waqas Hussain
+-- Copyright (C) 2009-2010 Matthew Wild
+-- Copyright (C) 2009-2010 Waqas Hussain
-- Copyright (C) 2009 Thilo Cestonaro
---
+--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
-local prosody = prosody;
-local st = require "util.stanza";
-local datamanager = require "util.datamanager";
-local bare_sessions = bare_sessions;
-local util_Jid = require "util.jid";
-local jid_bare = util_Jid.bare;
-local jid_split = util_Jid.split;
-local load_roster = require "core.rostermanager".load_roster;
-local to_number = _G.tonumber;
-
-function findNamedList (privacy_lists, name)
- local ret = nil
- if privacy_lists.lists == nil then
- return nil;
- end
-
- for i=1, #privacy_lists.lists do
- if privacy_lists.lists[i].name == name then
- ret = i;
- break;
- end
- end
- return ret;
-end
-
-function isListUsed(origin, name, privacy_lists)
- if bare_sessions[origin.username.."@"..origin.host].sessions ~= nil then
- for resource, session in pairs(bare_sessions[origin.username.."@"..origin.host].sessions) do
- if resource ~= origin.resource then
- if session.activePrivacyList == name then
- return true;
- elseif session.activePrivacyList == nil and privacy_lists.default == name then
- return true;
- end
- end
- end
- end
- return false;
-end
-
-function isAnotherSessionUsingDefaultList(origin)
- local ret = false
- if bare_sessions[origin.username.."@"..origin.host].sessions ~= nil then
- for resource, session in pairs(bare_sessions[origin.username.."@"..origin.host].sessions) do
- if resource ~= origin.resource and session.activePrivacyList == nil then
- ret = true;
- break;
- end
- end
- end
- return ret;
-end
-
-function sendUnavailable(to, from)
---[[ example unavailable presence stanza
-<presence from="node@host/resource" type="unavailable" to="node@host" >
- <status>Logged out</status>
-</presence>
-]]--
- local presence = st.presence({from=from, type="unavailable"})
- presence:tag("status"):text("Logged out");
-
- local node, host = jid_bare(to);
- local bare = node .. "@" .. host;
-
- if bare_sessions[bare].sessions ~= nil then
- for resource, session in pairs(bare_sessions[bare].sessions) do
- presence.attr.to = session.full_jid;
- module:log("debug", "send unavailable to: %s; from: %s", tostring(presence.attr.to), tostring(presence.attr.from));
- origin.send(presence);
- end
- end
-end
-
-function sendNeededUnavailablePersences(origin, listnameOrItem) -- TODO implement it correctly!
- if type(listnameOrItem) == "string" then
- local listname = listnameOrItem;
- for _,list in ipairs(privacy_lists.lists) do
- if list.name == listname then
- for _,item in ipairs(list.items) do
- sendNeededUnavailablePersences(origin, item);
- end
- end
- end
- elseif type(listnameOrItem) == "table" then
- module:log("debug", "got an item, check wether to send unavailable presence stanza or not");
- local item = listnameOrItem;
- local serialize = require "util.serialization".serialize;
-
-
- if item["presence-out"] == true then
- if item.type == "jid" then
- sendUnavailable(item.value, origin.full_jid);
- elseif item.type == "group" then
- elseif item.type == "subscription" then
- elseif item.type == nil then
- end
- elseif item["presence-in"] == true then
- if item.type == "jid" then
- sendUnavailable(origin.full_jid, item.value);
- elseif item.type == "group" then
- elseif item.type == "subscription" then
- elseif item.type == nil then
- end
- end
- else
- module:log("debug", "got unknown type: %s", type(listnameOrItem));
- end
-end
-
-function declineList (privacy_lists, origin, stanza, which)
- if which == "default" then
- if isAnotherSessionUsingDefaultList(origin) then
- return { "cancel", "conflict", "Another session is online and using the default list."};
- end
- privacy_lists.default = nil;
- origin.send(st.reply(stanza));
- elseif which == "active" then
- origin.activePrivacyList = nil;
- origin.send(st.reply(stanza));
- else
- return {"modify", "bad-request", "Neither default nor active list specifed to decline."};
- end
- return true;
-end
-
-function activateList (privacy_lists, origin, stanza, which, name)
- local idx = findNamedList(privacy_lists, name);
-
- if privacy_lists.default == nil then
- privacy_lists.default = "";
- end
- if origin.activePrivacyList == nil then
- origin.activePrivacyList = "";
- end
-
- if which == "default" and idx ~= nil then
- if isAnotherSessionUsingDefaultList(origin) then
- return {"cancel", "conflict", "Another session is online and using the default list."};
- end
- privacy_lists.default = name;
- origin.send(st.reply(stanza));
---[[
- if origin.activePrivacyList == nil then
- sendNeededUnavailablePersences(origin, name);
- end
-]]--
- elseif which == "active" and idx ~= nil then
- origin.activePrivacyList = name;
- origin.send(st.reply(stanza));
- -- sendNeededUnavailablePersences(origin, name);
- else
- return {"modify", "bad-request", "Either not active or default given or unknown list name specified."};
- end
- return true;
-end
-
-function deleteList (privacy_lists, origin, stanza, name)
- local idx = findNamedList(privacy_lists, name);
-
- if idx ~= nil then
- if isListUsed(origin, name, privacy_lists) then
- return {"cancel", "conflict", "Another session is online and using the list which should be deleted."};
- end
- if privacy_lists.default == name then
- privacy_lists.default = "";
- end
- if origin.activePrivacyList == name then
- origin.activePrivacyList = "";
- end
- table.remove(privacy_lists.lists, idx);
- origin.send(st.reply(stanza));
- return true;
- end
- return {"modify", "bad-request", "Not existing list specifed to be deleted."};
-end
-
-local function sortByOrder(a, b)
- if a.order < b.order then
- return true;
- end
- return false;
-end
-
-function createOrReplaceList (privacy_lists, origin, stanza, name, entries, roster)
- local idx = findNamedList(privacy_lists, name);
- local bare_jid = origin.username.."@"..origin.host;
-
- if privacy_lists.lists == nil then
- privacy_lists.lists = {};
- end
-
- if idx == nil then
- idx = #privacy_lists.lists + 1;
- end
-
- local orderCheck = {};
- local list = {};
- list.name = name;
- list.items = {};
-
- for _,item in ipairs(entries) do
- if to_number(item.attr.order) == nil or to_number(item.attr.order) < 0 or orderCheck[item.attr.order] ~= nil then
- return {"modify", "bad-request", "Order attribute not valid."};
- end
-
- if item.attr.type ~= nil and item.attr.type ~= "jid" and item.attr.type ~= "subscription" and item.attr.type ~= "group" then
- return {"modify", "bad-request", "Type attribute not valid."};
- end
-
- local tmp = {};
- orderCheck[item.attr.order] = true;
-
- tmp["type"] = item.attr.type;
- tmp["value"] = item.attr.value;
- tmp["action"] = item.attr.action;
- tmp["order"] = to_number(item.attr.order);
- tmp["presence-in"] = false;
- tmp["presence-out"] = false;
- tmp["message"] = false;
- tmp["iq"] = false;
-
- if #item.tags > 0 then
- for _,tag in ipairs(item.tags) do
- tmp[tag.name] = true;
- end
- end
-
- if tmp.type == "group" then
- local found = false;
- local roster = load_roster(origin.username, origin.host);
- for jid,item in pairs(roster) do
- if item.groups ~= nil then
- for group in pairs(item.groups) do
- if group == tmp.value then
- found = true;
- break;
- end
- end
- if found == true then
- break;
- end
- end
- end
- if found == false then
- return {"cancel", "item-not-found", "Specifed roster group not existing."};
- end
- elseif tmp.type == "subscription" then
- if tmp.value ~= "both" and
- tmp.value ~= "to" and
- tmp.value ~= "from" and
- tmp.value ~= "none" then
- return {"cancel", "bad-request", "Subscription value must be both, to, from or none."};
- end
- end
-
- if tmp.action ~= "deny" and tmp.action ~= "allow" then
- return {"cancel", "bad-request", "Action must be either deny or allow."};
- end
-
---[[
- if (privacy_lists.default == name and origin.activePrivacyList == nil) or origin.activePrivacyList == name then
- module:log("debug", "calling sendNeededUnavailablePresences!");
- -- item is valid and list is active, so send needed unavailable stanzas
- sendNeededUnavailablePersences(origin, tmp);
- end
-]]--
- list.items[#list.items + 1] = tmp;
- end
-
- table.sort(list, sortByOrder);
-
- privacy_lists.lists[idx] = list;
- origin.send(st.reply(stanza));
- if bare_sessions[bare_jid] ~= nil then
- iq = st.iq ( { type = "set", id="push1" } );
- iq:tag ("query", { xmlns = "jabber:iq:privacy" } );
- iq:tag ("list", { name = list.name } ):up();
- iq:up();
- for resource, session in pairs(bare_sessions[bare_jid].sessions) do
- iq.attr.to = bare_jid.."/"..resource
- session.send(iq);
- end
- else
- return {"cancel", "bad-request", "internal error."};
- end
- return true;
-end
-
-function getList(privacy_lists, origin, stanza, name)
- local reply = st.reply(stanza);
- reply:tag("query", {xmlns="jabber:iq:privacy"});
-
- if name == nil then
- reply:tag("active", {name=origin.activePrivacyList or ""}):up();
- reply:tag("default", {name=privacy_lists.default or ""}):up();
- if privacy_lists.lists then
- for _,list in ipairs(privacy_lists.lists) do
- reply:tag("list", {name=list.name}):up();
- end
- end
- else
- local idx = findNamedList(privacy_lists, name);
- if idx ~= nil then
- list = privacy_lists.lists[idx];
- reply = reply:tag("list", {name=list.name});
- for _,item in ipairs(list.items) do
- reply:tag("item", {type=item.type, value=item.value, action=item.action, order=item.order});
- if item["message"] then reply:tag("message"):up(); end
- if item["iq"] then reply:tag("iq"):up(); end
- if item["presence-in"] then reply:tag("presence-in"):up(); end
- if item["presence-out"] then reply:tag("presence-out"):up(); end
- reply:up();
- end
- else
- return {"cancel", "item-not-found", "Unknown list specified."};
- end
- end
-
- origin.send(reply);
- return true;
-end
-
-module:hook("iq/bare/jabber:iq:privacy:query", function(data)
- local origin, stanza = data.origin, data.stanza;
-
- if stanza.attr.to == nil then -- only service requests to own bare JID
- local query = stanza.tags[1]; -- the query element
- local valid = false;
- local privacy_lists = datamanager.load(origin.username, origin.host, "privacy") or {};
-
- if stanza.attr.type == "set" then
- if #query.tags == 1 then -- the <query/> element MUST NOT include more than one child element
- for _,tag in ipairs(query.tags) do
- if tag.name == "active" or tag.name == "default" then
- if tag.attr.name == nil then -- Client declines the use of active / default list
- valid = declineList(privacy_lists, origin, stanza, tag.name);
- else -- Client requests change of active / default list
- valid = activateList(privacy_lists, origin, stanza, tag.name, tag.attr.name);
- end
- elseif tag.name == "list" and tag.attr.name then -- Client adds / edits a privacy list
- if #tag.tags == 0 then -- Client removes a privacy list
- valid = deleteList(privacy_lists, origin, stanza, tag.attr.name);
- else -- Client edits a privacy list
- valid = createOrReplaceList(privacy_lists, origin, stanza, tag.attr.name, tag.tags);
- end
- end
- end
- end
- elseif stanza.attr.type == "get" then
- local name = nil;
- local listsToRetrieve = 0;
- if #query.tags >= 1 then
- for _,tag in ipairs(query.tags) do
- if tag.name == "list" then -- Client requests a privacy list from server
- name = tag.attr.name;
- listsToRetrieve = listsToRetrieve + 1;
- end
- end
- end
- if listsToRetrieve == 0 or listsToRetrieve == 1 then
- valid = getList(privacy_lists, origin, stanza, name);
- end
- end
-
- if valid ~= true then
- if valid[0] == nil then
- valid[0] = "cancel";
- end
- if valid[1] == nil then
- valid[1] = "bad-request";
- end
- origin.send(st.error_reply(stanza, valid[0], valid[1], valid[2]));
- else
- datamanager.store(origin.username, origin.host, "privacy", privacy_lists);
- end
- return true;
- end
- return false;
-end, 500);
-
-function checkIfNeedToBeBlocked(e, session)
- local origin, stanza = e.origin, e.stanza;
- local privacy_lists = datamanager.load(session.username, session.host, "privacy") or {};
- local bare_jid = session.username.."@"..session.host;
-
- module:log("debug", "stanza: %s, to: %s, from: %s", tostring(stanza.name), tostring(stanza.attr.to), tostring(stanza.attr.from));
-
- if stanza.attr.to ~= nil and stanza.attr.from ~= nil then
- if privacy_lists.lists == nil or
- (session.activePrivacyList == nil or session.activePrivacyList == "") and
- (privacy_lists.default == nil or privacy_lists.default == "")
- then
- return; -- Nothing to block, default is Allow all
- end
- if jid_bare(stanza.attr.from) == bare_jid and jid_bare(stanza.attr.to) == bare_jid then
- module:log("debug", "Never block communications from one of a user's resources to another.");
- return; -- from one of a user's resource to another => HANDS OFF!
- end
-
- local idx;
- local list;
- local item;
- local listname = session.activePrivacyList;
- if listname == nil or listname == "" then
- listname = privacy_lists.default; -- no active list selected, use default list
- end
- idx = findNamedList(privacy_lists, listname);
- if idx == nil then
- module:log("error", "given privacy listname not found. name: %s", listname);
- return;
- end
- list = privacy_lists.lists[idx];
- if list == nil then
- module:log("info", "privacy list index wrong. index: %d", idx);
- return;
- end
- for _,item in ipairs(list.items) do
- local apply = false;
- local block = false;
- if (
- (stanza.name == "message" and item.message) or
- (stanza.name == "iq" and item.iq) or
- (stanza.name == "presence" and jid_bare(stanza.attr.to) == bare_jid and item["presence-in"]) or
- (stanza.name == "presence" and jid_bare(stanza.attr.from) == bare_jid and item["presence-out"]) or
- (item.message == false and item.iq == false and item["presence-in"] == false and item["presence-in"] == false)
- ) then
- apply = true;
- end
- if apply then
- local evilJid = {};
- apply = false;
- if jid_bare(stanza.attr.to) == bare_jid then
- module:log("debug", "evil jid is (from): %s", stanza.attr.from);
- evilJid.node, evilJid.host, evilJid.resource = jid_split(stanza.attr.from);
- else
- module:log("debug", "evil jid is (to): %s", stanza.attr.to);
- evilJid.node, evilJid.host, evilJid.resource = jid_split(stanza.attr.to);
- end
- if item.type == "jid" and
- (evilJid.node and evilJid.host and evilJid.resource and item.value == evilJid.node.."@"..evilJid.host.."/"..evilJid.resource) or
- (evilJid.node and evilJid.host and item.value == evilJid.node.."@"..evilJid.host) or
- (evilJid.host and evilJid.resource and item.value == evilJid.host.."/"..evilJid.resource) or
- (evilJid.host and item.value == evilJid.host) then
- apply = true;
- block = (item.action == "deny");
- elseif item.type == "group" then
- local roster = load_roster(session.username, session.host);
- local groups = roster[evilJid.node .. "@" .. evilJid.host].groups;
- for group in pairs(groups) do
- if group == item.value then
- apply = true;
- block = (item.action == "deny");
- break;
- end
- end
- elseif item.type == "subscription" and evilJid.node ~= nil and evilJid.host ~= nil then -- we need a valid bare evil jid
- local roster = load_roster(session.username, session.host);
- if roster[evilJid.node .. "@" .. evilJid.host].subscription == item.value then
- apply = true;
- block = (item.action == "deny");
- end
- elseif item.type == nil then
- apply = true;
- block = (item.action == "deny");
- end
- end
- if apply then
- if block then
- module:log("info", "stanza blocked: %s, to: %s, from: %s", tostring(stanza.name), tostring(stanza.attr.to), tostring(stanza.attr.from));
- if stanza.name == "message" then
- origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
- elseif stanza.name == "iq" and (stanza.attr.type == "get" or stanza.attr.type == "set") then
- origin.send(st.error_reply(stanza, "cancel", "service-unavailable"));
- end
- return true; -- stanza blocked !
- else
- module:log("info", "stanza explicit allowed!")
- return;
- end
- end
- end
- end
- return;
-end
-
-function preCheckIncoming(e)
- local session;
- if e.stanza.attr.to ~= nil then
- local node, host, resource = jid_split(e.stanza.attr.to);
- if node == nil or host == nil then
- return;
- end
- if resource == nil then
- local prio = 0;
- local session_;
- if bare_sessions[node.."@"..host] ~= nil then
- for resource, session_ in pairs(bare_sessions[node.."@"..host].sessions) do
- if session_.priority ~= nil and session_.priority > prio then
- session = session_;
- prio = session_.priority;
- end
- end
- end
- else
- session = full_sessions[node.."@"..host.."/"..resource];
- end
- if session ~= nil then
- return checkIfNeedToBeBlocked(e, session);
- else
- module:log("debug", "preCheckIncoming: Couldn't get session for jid: %s@%s/%s", tostring(node), tostring(host), tostring(resource))
- end
- end
- return;
-end
-
-function preCheckOutgoing(e)
- local session = e.origin;
- if e.stanza.attr.from == nil then
- e.stanza.attr.from = session.username .. "@" .. session.host;
- if session.resource ~= nil then
- e.stanza.attr.from = e.stanza.attr.from .. "/" .. session.resource;
- end
- end
- return checkIfNeedToBeBlocked(e, session);
-end
-
-
-module:hook("pre-message/full", preCheckOutgoing, 500);
-module:hook("pre-message/bare", preCheckOutgoing, 500);
-module:hook("pre-message/host", preCheckOutgoing, 500);
-module:hook("pre-iq/full", preCheckOutgoing, 500);
-module:hook("pre-iq/bare", preCheckOutgoing, 500);
-module:hook("pre-iq/host", preCheckOutgoing, 500);
-module:hook("pre-presence/full", preCheckOutgoing, 500);
-module:hook("pre-presence/bare", preCheckOutgoing, 500);
-module:hook("pre-presence/host", preCheckOutgoing, 500);
-
-module:hook("message/full", preCheckIncoming, 500);
-module:hook("message/bare", preCheckIncoming, 500);
-module:hook("message/host", preCheckIncoming, 500);
-module:hook("iq/full", preCheckIncoming, 500);
-module:hook("iq/bare", preCheckIncoming, 500);
-module:hook("iq/host", preCheckIncoming, 500);
-module:hook("presence/full", preCheckIncoming, 500);
-module:hook("presence/bare", preCheckIncoming, 500);
-module:hook("presence/host", preCheckIncoming, 500);
-module:log("info", "mod_privacy loaded ...");
+-- COMPAT w/ pre 0.10
+module:log("error", "The mod_privacy plugin has been replaced by mod_blocklist. Please update your config. For more information see https://prosody.im/doc/modules/mod_privacy");
+module:depends("blocklist");
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