--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_storage_ejabberdsql_readonly/README.markdown Thu Jun 30 05:27:02 2016 +0100
@@ -0,0 +1,39 @@
+---
+labels:
+- 'Type-Storage'
+- 'Stage-Alpha'
+summary: Ejabberd SQL Read-only Storage Module
+...
+
+Introduction
+============
+
+This is a storage backend using Ejabberd’s SQL backend. It depends on
+[LuaDBI](https://prosody.im/doc/depends#luadbi)
+
+This module only works in read-only, and was made to be used by
+[mod\_migrate](https://modules.prosody.im/mod_migrate.html) to migrate
+from Ejabberd’s SQL backend.
+
+Configuration
+=============
+
+Copy the module to the prosody modules/plugins directory.
+
+In Prosody's configuration file, set:
+
+ storage = "ejabberdsql_readonly"
+
+EjabberdSQL options are the same as the
+[https://prosody.im/doc/modules/mod\_storage\_sql](SQL ones):
+
+Compatibility
+=============
+
+ ------- ---------------------------
+ trunk Works
+ ------- ---------------------------
+ 0.10 Untested, but should work
+ ------- ---------------------------
+ 0.9 Does not work
+ ------- ---------------------------
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_storage_ejabberdsql_readonly/mod_storage_ejabberdsql_readonly.lua Thu Jun 30 05:27:02 2016 +0100
@@ -0,0 +1,187 @@
+
+-- luacheck: ignore 212/self
+
+local sql = require "util.sql";
+local xml_parse = require "util.xml".parse;
+local resolve_relative_path = require "util.paths".resolve_relative_path;
+local stanza_preserialize = require "util.stanza".preserialize;
+
+local unpack = unpack
+local function iterator(result)
+ return function(result_)
+ local row = result_();
+ if row ~= nil then
+ return unpack(row);
+ end
+ end, result, nil;
+end
+
+local default_params = { driver = "SQLite3" };
+
+local engine;
+
+local host = module.host;
+local user, store;
+
+local function keyval_store_get()
+ if store == "accounts" then
+ --for row in engine:select("SELECT `password`,`created_at` FROM `users` WHERE `username`=?", user or "") do
+ local result;
+ for row in engine:select("SELECT `password` FROM `users` WHERE `username`=? LIMIT 1", user or "") do result = row end
+ local password = result[1];
+ --local created_at = result[2];
+ return { password = password };
+
+ elseif store == "roster" then
+ local roster = {};
+ local pending = nil;
+ --for row in engine:select("SELECT `jid`,`nick`,`subscription`,`ask`,`askmessage`,`server`,`subscribe`,`type`,`created_at` FROM `rosterusers` WHERE `username`=?", user or "") do
+ for row in engine:select("SELECT `jid`,`nick`,`subscription`,`ask` FROM `rosterusers` WHERE `username`=?", user or "") do
+ local contact = row[1];
+ local name = row[2];
+ if name == "" then name = nil; end
+ local subscription = row[3];
+ if subscription == "N" then
+ subscription = "none"
+ elseif subscription == "B" then
+ subscription = "both"
+ elseif subscription == "F" then
+ subscription = "from"
+ elseif subscription == "T" then
+ subscription = "to"
+ else error("Unknown subscription type: "..subscription) end;
+ local ask = row[4];
+ if ask == "N" then
+ ask = nil;
+ elseif ask == "O" then
+ ask = "subscribe";
+ elseif ask == "I" then
+ if pending == nil then pending = {} end;
+ pending[contact] = true;
+ ask = nil;
+ elseif ask == "B" then
+ if pending == nil then pending = {} end;
+ pending[contact] = true;
+ ask = "subscribe";
+ else error("Unknown ask type: "..ask); end
+
+ --local askmessage = row[5];
+ --local server = row[6];
+ --local subscribe = row[7];
+ --local type = row[8];
+ --local created_at = row[9];
+
+ local groups = {};
+ for row in engine:select("SELECT `grp` FROM `rostergroups` WHERE `username`=? AND `jid`=?", user or "", contact) do
+ local group = row[1];
+ groups[group] = true;
+ end
+
+ roster[contact] = { name = name, ask = ask, subscription = subscription, groups = groups };
+ end
+ return roster;
+
+ elseif store == "vcard" then
+ local result = nil;
+ for row in engine:select("SELECT `vcard` FROM `vcard` WHERE `username`=? LIMIT 1", user or "") do result = row end
+ if not result then
+ return nil;
+ end
+ local data, err = xml_parse(result[1]);
+ if data then
+ return stanza_preserialize(data);
+ end
+
+ elseif store == "private" then
+ local private = nil;
+ local result;
+ for row in engine:select("SELECT `namespace`,`data` FROM `private_storage` WHERE `username`=?", user or "") do
+ if private == nil then private = {} end;
+ local namespace = row[1];
+ local data, err = xml_parse(row[2]);
+ if data then
+ private[namespace] = stanza_preserialize(data);
+ end
+ end
+ return private;
+ end
+end
+
+--- Key/value store API (default store type)
+
+local keyval_store = {};
+keyval_store.__index = keyval_store;
+function keyval_store:get(username)
+ user, store = username, self.store;
+ local ok, result = engine:transaction(keyval_store_get);
+ if not ok then
+ module:log("error", "Unable to read from database %s store for %s: %s", store, username or "<host>", result);
+ return nil, result;
+ end
+ return result;
+end
+
+function keyval_store:users()
+ local ok, result = engine:transaction(function()
+ return engine:select("SELECT `username` FROM `users`");
+ end);
+ if not ok then return ok, result end
+ return iterator(result);
+end
+
+local stores = {
+ keyval = keyval_store;
+};
+
+--- Implement storage driver API
+
+-- FIXME: Some of these operations need to operate on the archive store(s) too
+
+local driver = {};
+
+function driver:open(store, typ)
+ local store_mt = stores[typ or "keyval"];
+ if store_mt then
+ return setmetatable({ store = store }, store_mt);
+ end
+ return nil, "unsupported-store";
+end
+
+function driver:stores(username)
+ local query = "SELECT 'accounts', 'roster', 'vcard', 'private'";
+ if username == true or not username then
+ username = "";
+ end
+ local ok, result = engine:transaction(function()
+ return engine:select(query, host, username);
+ end);
+ if not ok then return ok, result end
+ return iterator(result);
+end
+
+--- Initialization
+
+
+local function normalize_params(params)
+ if params.driver == "SQLite3" then
+ if params.database ~= ":memory:" then
+ params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite");
+ end
+ end
+ assert(params.driver and params.database, "Configuration error: Both the SQL driver and the database need to be specified");
+ return params;
+end
+
+function module.load()
+ if prosody.prosodyctl then return; end
+ local engines = module:shared("/*/sql/connections");
+ local params = normalize_params(module:get_option("sql", default_params));
+ engine = engines[sql.db2uri(params)];
+ if not engine then
+ module:log("debug", "Creating new engine");
+ engine = sql:create_engine(params);
+ engines[sql.db2uri(params)] = engine;
+ end
+
+ module:provides("storage", driver);
+end