diff options
Diffstat (limited to 'plugins/mod_privacy.lua')
| -rw-r--r-- | plugins/mod_privacy.lua | 443 |
1 files changed, 4 insertions, 439 deletions
diff --git a/plugins/mod_privacy.lua b/plugins/mod_privacy.lua index 49c9427f..b749b7c7 100644 --- a/plugins/mod_privacy.lua +++ b/plugins/mod_privacy.lua @@ -2,447 +2,12 @@ -- 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. -- -module:add_feature("jabber:iq:privacy"); - -local st = require "util.stanza"; -local bare_sessions, full_sessions = prosody.bare_sessions, prosody.full_sessions; -local util_Jid = require "util.jid"; -local jid_bare = util_Jid.bare; -local jid_split, jid_join = util_Jid.split, util_Jid.join; -local load_roster = require "core.rostermanager".load_roster; -local to_number = tonumber; - -local privacy_storage = module:open_store(); - -function isListUsed(origin, name, privacy_lists) - local user = bare_sessions[origin.username.."@"..origin.host]; - if user then - for resource, session in pairs(user.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 -end - -function isAnotherSessionUsingDefaultList(origin) - local user = bare_sessions[origin.username.."@"..origin.host]; - if user then - for resource, session in pairs(user.sessions) do - if resource ~= origin.resource and session.activePrivacyList == nil then - return true; - end - end - 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 list = privacy_lists.lists[name]; - - if which == "default" and list 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)); - elseif which == "active" and list then - origin.activePrivacyList = name; - origin.send(st.reply(stanza)); - elseif not list then - return {"cancel", "item-not-found", "No such list: "..name}; - else - return {"modify", "bad-request", "No list chosen to be active or default."}; - end - return true; -end - -function deleteList(privacy_lists, origin, stanza, name) - local list = privacy_lists.lists[name]; - - if list 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 = nil; - end - if origin.activePrivacyList == name then - origin.activePrivacyList = nil; - end - privacy_lists.lists[name] = nil; - origin.send(st.reply(stanza)); - return true; - end - return {"modify", "bad-request", "Not existing list specifed to be deleted."}; -end - -function createOrReplaceList (privacy_lists, origin, stanza, name, entries) - local bare_jid = origin.username.."@"..origin.host; - - if privacy_lists.lists == nil then - privacy_lists.lists = {}; - end - - local list = {}; - privacy_lists.lists[name] = list; - - local orderCheck = {}; - 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 == "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 - list.items[#list.items + 1] = tmp; - end - - table.sort(list.items, function(a, b) return a.order < b.order; end); - - origin.send(st.reply(stanza)); - if bare_sessions[bare_jid] ~= nil then - local 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 - if privacy_lists.lists then - if origin.activePrivacyList then - reply:tag("active", {name=origin.activePrivacyList}):up(); - end - if privacy_lists.default then - reply:tag("default", {name=privacy_lists.default}):up(); - end - for name,list in pairs(privacy_lists.lists) do - reply:tag("list", {name=name}):up(); - end - end - else - local list = privacy_lists.lists[name]; - if list then - 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 = privacy_storage:get(origin.username) or { lists = {} }; - - if privacy_lists.lists[1] then -- Code to migrate from old privacy lists format, remove in 0.8 - module:log("info", "Upgrading format of stored privacy lists for %s@%s", origin.username, origin.host); - local lists = privacy_lists.lists; - for idx, list in ipairs(lists) do - lists[list.name] = list; - lists[idx] = nil; - end - end - - 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 - valid = valid or { "cancel", "bad-request", "Couldn't understand request" }; - if valid[1] == nil then - valid[1] = "cancel"; - end - if valid[2] == nil then - valid[2] = "bad-request"; - end - origin.send(st.error_reply(stanza, valid[1], valid[2], valid[3])); - else - privacy_storage:set(origin.username, privacy_lists); - end - return true; - end -end); - -function checkIfNeedToBeBlocked(e, session) - local origin, stanza = e.origin, e.stanza; - local privacy_lists = privacy_storage:get(session.username) or {}; - local bare_jid = session.username.."@"..session.host; - local to = stanza.attr.to or bare_jid; - local from = stanza.attr.from; - - local is_to_user = bare_jid == jid_bare(to); - local is_from_user = bare_jid == jid_bare(from); - - --module:log("debug", "stanza: %s, to: %s, from: %s", tostring(stanza.name), tostring(to), tostring(from)); - - if privacy_lists.lists == nil or - not (session.activePrivacyList or privacy_lists.default) - then - return; -- Nothing to block, default is Allow all - end - if is_from_user and is_to_user then - --module:log("debug", "Not blocking communications between user's resources"); - return; -- from one of a user's resource to another => HANDS OFF! - end - - local listname = session.activePrivacyList; - if listname == nil then - listname = privacy_lists.default; -- no active list selected, use default list - end - local list = privacy_lists.lists[listname]; - if not list then -- should never happen - module:log("warn", "given privacy list not found. name: %s for user %s", listname, bare_jid); - 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 is_to_user and item["presence-in"]) or - (stanza.name == "presence" and is_from_user and item["presence-out"]) or - (item.message == false and item.iq == false and item["presence-in"] == false and item["presence-out"] == false) - ) then - apply = true; - end - if apply then - local evilJid = {}; - apply = false; - if is_to_user then - --module:log("debug", "evil jid is (from): %s", from); - evilJid.node, evilJid.host, evilJid.resource = jid_split(from); - else - --module:log("debug", "evil jid is (to): %s", to); - evilJid.node, evilJid.host, evilJid.resource = jid_split(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 roster_entry = roster[jid_join(evilJid.node, evilJid.host)]; - if roster_entry then - local groups = roster_entry.groups; - for group in pairs(groups) do - if group == item.value then - apply = true; - block = (item.action == "deny"); - break; - end - end - end - elseif item.type == "subscription" then -- we need a valid bare evil jid - local roster = load_roster(session.username, session.host); - local roster_entry = roster[jid_join(evilJid.node, evilJid.host)]; - if (not(roster_entry) and item.value == "none") - or (roster_entry and roster_entry.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 - -- drop and not bounce groupchat messages, otherwise users will get kicked - if stanza.attr.type == "groupchat" then - return true; - end - module:log("debug", "stanza blocked: %s, to: %s, from: %s", tostring(stanza.name), tostring(to), tostring(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("debug", "stanza explicitly allowed!") - return; - end - end - end -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; - 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 -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 - if session.username then -- FIXME do properly - return checkIfNeedToBeBlocked(e, session); - end -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); +-- 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"); |