-- luacheck: ignore 212/self local json = require "util.json"; local sql = require "util.sql"; local xml_parse = require "util.xml".parse; local uuid = require "util.uuid"; local resolve_relative_path = require "util.paths".resolve_relative_path; local is_stanza = require"util.stanza".is_stanza; local t_concat = table.concat; local noop = function() end 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 function serialize(value) local t = type(value); if t == "string" or t == "boolean" or t == "number" then return t, tostring(value); elseif is_stanza(value) then return "xml", tostring(value); elseif t == "table" then local encoded,err = json.encode(value); if encoded then return "json", encoded; end return nil, err; end return nil, "Unhandled value type: "..t; end local function deserialize(t, value) if t == "string" then return value; elseif t == "boolean" then if value == "true" then return true; elseif value == "false" then return false; end elseif t == "number" then return tonumber(value); elseif t == "json" then return json.decode(value); elseif t == "xml" then return xml_parse(value); end end local host = module.host; local user, store; local function keyval_store_get() local haveany; local result = {}; local select_sql = [[ SELECT "key","type","value" FROM "prosody" WHERE "host"=? AND "user"=? AND "store"=?; ]] for row in engine:select(select_sql, host, user or "", store) do haveany = true; local k = row[1]; local v = deserialize(row[2], row[3]); if k and v then if k ~= "" then result[k] = v; elseif type(v) == "table" then for a,b in pairs(v) do result[a] = b; end end end end if haveany then return result; end end local function keyval_store_set(data) local delete_sql = [[ DELETE FROM "prosody" WHERE "host"=? AND "user"=? AND "store"=? ]]; engine:delete(delete_sql, host, user or "", store); local insert_sql = [[ INSERT INTO "prosody" ("host","user","store","key","type","value") VALUES (?,?,?,?,?,?); ]] if data and next(data) ~= nil then local extradata = {}; for key, value in pairs(data) do if type(key) == "string" and key ~= "" then local t, encoded_value = assert(serialize(value)); engine:insert(insert_sql, host, user or "", store, key, t, encoded_value); else extradata[key] = value; end end if next(extradata) ~= nil then local t, encoded_extradata = assert(serialize(extradata)); engine:insert(insert_sql, host, user or "", store, "", t, encoded_extradata); end end return true; 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:set(username, data) user,store = username,self.store; return engine:transaction(function() return keyval_store_set(data); end); end function keyval_store:users() local ok, result = engine:transaction(function() local select_sql = [[ SELECT DISTINCT "user" FROM "prosody" WHERE "host"=? AND "store"=?; ]]; return engine:select(select_sql, host, self.store); end); if not ok then return ok, result end return iterator(result); end --- Archive store API -- luacheck: ignore 512 431/user 431/store local map_store = {}; map_store.__index = map_store; map_store.remove = {}; function map_store:get(username, key) local ok, result = engine:transaction(function() local query = [[ SELECT "type", "value" FROM "prosody" WHERE "host"=? AND "user"=? AND "store"=? AND "key"=? LIMIT 1 ]]; local data; if type(key) == "string" and key ~= "" then for row in engine:select(query, host, username or "", self.store, key) do data = deserialize(row[1], row[2]); end return data; else for row in engine:select(query, host, username or "", self.store, "") do data = deserialize(row[1], row[2]); end return data and data[key] or nil; end end); if not ok then return nil, result; end return result; end function map_store:set(username, key, data) if data == nil then data = self.remove; end return self:set_keys(username, { [key] = data }); end function map_store:set_keys(username, keydatas) local ok, result = engine:transaction(function() local delete_sql = [[ DELETE FROM "prosody" WHERE "host"=? AND "user"=? AND "store"=? AND "key"=?; ]]; local insert_sql = [[ INSERT INTO "prosody" ("host","user","store","key","type","value") VALUES (?,?,?,?,?,?); ]]; local select_extradata_sql = [[ SELECT "type", "value" FROM "prosody" WHERE "host"=? AND "user"=? AND "store"=? AND "key"=? LIMIT 1; ]]; for key, data in pairs(keydatas) do if type(key) == "string" and key ~= "" then engine:delete(delete_sql, host, username or "", self.store, key); if data ~= self.remove then local t, value = assert(serialize(data)); engine:insert(insert_sql, host, username or "", self.store, key, t, value); end else local extradata = {}; for row in engine:select(select_extradata_sql, host, username or "", self.store, "") do extradata = deserialize(row[1], row[2]); end engine:delete(delete_sql, host, username or "", self.store, ""); extradata[key] = data; local t, value = assert(serialize(extradata)); engine:insert(insert_sql, host, username or "", self.store, "", t, value); end end return true; end); if not ok then return nil, result; end return result; end local archive_store = {} archive_store.caps = { total = true; }; archive_store.__index = archive_store function archive_store:append(username, key, value, when, with) local user,store = username,self.store; when = when or os.time(); with = with or ""; local ok, ret = engine:transaction(function() local delete_sql = [[ DELETE FROM "prosodyarchive" WHERE "host"=? AND "user"=? AND "store"=? AND "key"=?; ]]; local insert_sql = [[ INSERT INTO "prosodyarchive" ("host", "user", "store", "when", "with", "key", "type", "value") VALUES (?,?,?,?,?,?,?,?); ]]; if key then engine:delete(delete_sql, host, user or "", store, key); else key = uuid.generate(); end local t, encoded_value = assert(serialize(value)); engine:insert(insert_sql, host, user or "", store, when, with, key, t, encoded_value); return key; end); if not ok then return ok, ret; end return ret; -- the key end -- Helpers for building the WHERE clause local function archive_where(query, args, where) -- Time range, inclusive if query.start then args[#args+1] = query.start where[#where+1] = "\"when\" >= ?" end if query["end"] then args[#args+1] = query["end"]; if query.start then where[#where] = "\"when\" BETWEEN ? AND ?" -- is this inclusive? else where[#where+1] = "\"when\" <= ?" end end -- Related name if query.with then where[#where+1] = "\"with\" = ?"; args[#args+1] = query.with end -- Unique id if query.key then where[#where+1] = "\"key\" = ?"; args[#args+1] = query.key end end local function archive_where_id_range(query, args, where) local args_len = #args -- Before or after specific item, exclusive if query.after then -- keys better be unique! where[#where+1] = [[ "sort_id" > COALESCE( ( SELECT "sort_id" FROM "prosodyarchive" WHERE "key" = ? AND "host" = ? AND "user" = ? AND "store" = ? LIMIT 1 ), 0) ]]; args[args_len+1], args[args_len+2], args[args_len+3], args[args_len+4] = query.after, args[1], args[2], args[3]; args_len = args_len + 4 end if query.before then where[#where+1] = [[ "sort_id" < COALESCE( ( SELECT "sort_id" FROM "prosodyarchive" WHERE "key" = ? AND "host" = ? AND "user" = ? AND "store" = ? LIMIT 1 ), ( SELECT MAX("sort_id")+1 FROM "prosodyarchive" ) ) ]] args[args_len+1], args[args_len+2], args[args_len+3], args[args_len+4] = query.before, args[1], args[2], args[3]; end end function archive_store:find(username, query) query = query or {}; local user,store = username,self.store; local total; local ok, result = engine:transaction(function() local sql_query = [[ SELECT "key", "type", "value", "when", "with" FROM "prosodyarchive" WHERE %s ORDER BY "sort_id" %s%s; ]]; local args = { host, user or "", store, }; local where = { "\"host\" = ?", "\"user\" = ?", "\"store\" = ?", }; archive_where(query, args, where); -- Total matching if query.total then local stats = engine:select("SELECT COUNT(*) FROM \"prosodyarchive\" WHERE " .. t_concat(where, " AND "), unpack(args)); if stats then for row in stats do total = row[1]; end end if query.limit == 0 then -- Skip the real query return noop, total; end end archive_where_id_range(query, args, where); if query.limit then args[#args+1] = query.limit; end sql_query = sql_query:format(t_concat(where, " AND "), query.reverse and "DESC" or "ASC", query.limit and " LIMIT ?" or ""); return engine:select(sql_query, unpack(args)); end); if not ok then return ok, result end return function() local row = result(); if row ~= nil then return row[1], deserialize(row[2], row[3]), row[4], row[5]; end end, total; end function archive_store:delete(username, query) query = query or {}; local user,store = username,self.store; local ok, stmt = engine:transaction(function() local sql_query = "DELETE FROM \"prosodyarchive\" WHERE %s;"; local args = { host, user or "", store, }; local where = { "\"host\" = ?", "\"user\" = ?", "\"store\" = ?", }; if user == true then table.remove(args, 2); table.remove(where, 2); end archive_where(query, args, where); archive_where_id_range(query, args, where); sql_query = sql_query:format(t_concat(where, " AND ")); return engine:delete(sql_query, unpack(args)); end); return ok and stmt:affected(), stmt; end local stores = { keyval = keyval_store; map = map_store; archive = archive_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 DISTINCT \"store\" FROM \"prosody\" WHERE \"host\"=? AND \"user\"" .. (username == true and "!=?" or "=?"); 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 function driver:purge(username) return engine:transaction(function() local stmt,err = engine:delete("DELETE FROM \"prosody\" WHERE \"host\"=? AND \"user\"=?", host, username); return true, err; end); end --- Initialization local function create_table(engine, name) -- luacheck: ignore 431/engine local Table, Column, Index = sql.Table, sql.Column, sql.Index; local ProsodyTable = Table { name= name or "prosody"; Column { name="host", type="TEXT", nullable=false }; Column { name="user", type="TEXT", nullable=false }; Column { name="store", type="TEXT", nullable=false }; Column { name="key", type="TEXT", nullable=false }; Column { name="type", type="TEXT", nullable=false }; Column { name="value", type="MEDIUMTEXT", nullable=false }; Index { name="prosody_index", "host", "user", "store", "key" }; }; engine:transaction(function() ProsodyTable:create(engine); end); local ProsodyArchiveTable = Table { name="prosodyarchive"; Column { name="sort_id", type="INTEGER", primary_key=true, auto_increment=true }; Column { name="host", type="TEXT", nullable=false }; Column { name="user", type="TEXT", nullable=false }; Column { name="store", type="TEXT", nullable=false }; Column { name="key", type="TEXT", nullable=false }; -- item id Column { name="when", type="INTEGER", nullable=false }; -- timestamp Column { name="with", type="TEXT", nullable=false }; -- related id Column { name="type", type="TEXT", nullable=false }; Column { name="value", type="MEDIUMTEXT", nullable=false }; Index { name="prosodyarchive_index", unique = true, "host", "user", "store", "key" }; }; engine:transaction(function() ProsodyArchiveTable:create(engine); end); end local function upgrade_table(engine, params, apply_changes) -- luacheck: ignore 431/engine local changes = false; if params.driver == "MySQL" then local success,err = engine:transaction(function() local result = engine:execute("SHOW COLUMNS FROM \"prosody\" WHERE \"Field\"='value' and \"Type\"='text'"); if result:rowcount() > 0 then changes = true; if apply_changes then module:log("info", "Upgrading database schema..."); engine:execute("ALTER TABLE \"prosody\" MODIFY COLUMN \"value\" MEDIUMTEXT"); module:log("info", "Database table automatically upgraded"); end end return true; end); if not success then module:log("error", "Failed to check/upgrade database schema (%s), please see " .."http://prosody.im/doc/mysql for help", err or "unknown error"); return false; end -- COMPAT w/pre-0.10: Upgrade table to UTF-8 if not already local check_encoding_query = [[ SELECT "COLUMN_NAME","COLUMN_TYPE","TABLE_NAME" FROM "information_schema"."columns" WHERE "TABLE_NAME" LIKE 'prosody%%' AND "TABLE_SCHEMA" = ? AND ( "CHARACTER_SET_NAME"!=? OR "COLLATION_NAME"!=?); ]]; -- FIXME Is it ok to ignore the return values from this? engine:transaction(function() local result = assert(engine:execute(check_encoding_query, params.database, engine.charset, engine.charset.."_bin")); local n_bad_columns = result:rowcount(); if n_bad_columns > 0 then changes = true; if apply_changes then module:log("warn", "Found %d columns in prosody table requiring encoding change, updating now...", n_bad_columns); local fix_column_query1 = "ALTER TABLE \"%s\" CHANGE \"%s\" \"%s\" BLOB;"; local fix_column_query2 = "ALTER TABLE \"%s\" CHANGE \"%s\" \"%s\" %s CHARACTER SET '%s' COLLATE '%s_bin';"; for row in result:rows() do local column_name, column_type, table_name = unpack(row); module:log("debug", "Fixing column %s in table %s", column_name, table_name); engine:execute(fix_column_query1:format(table_name, column_name, column_name)); engine:execute(fix_column_query2:format(table_name, column_name, column_name, column_type, engine.charset, engine.charset)); end module:log("info", "Database encoding upgrade complete!"); end end end); success,err = engine:transaction(function() return engine:execute(check_encoding_query, params.database, engine.charset, engine.charset.."_bin"); end); if not success then module:log("error", "Failed to check/upgrade database encoding: %s", err or "unknown error"); return false; end end return changes; end local function normalize_database(driver, database) -- luacheck: ignore 431/driver if driver == "SQLite3" and database ~= ":memory:" then return resolve_relative_path(prosody.paths.data or ".", database or "prosody.sqlite"); end return database; end local function normalize_params(params) return { driver = assert(params.driver, "Configuration error: Both the SQL driver and the database need to be specified"); database = assert(normalize_database(params.driver, params.database), "Configuration error: Both the SQL driver and the database need to be specified"); username = params.username; password = params.password; host = params.host; port = params.port; }; 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, function (engine) -- luacheck: ignore 431/engine if module:get_option("sql_manage_tables", true) then -- Automatically create table, ignore failure (table probably already exists) -- FIXME: we should check in information_schema, etc. create_table(engine); -- Check whether the table needs upgrading if upgrade_table(engine, params, false) then module:log("error", "Old database format detected. Please run: prosodyctl mod_%s upgrade", module.name); return false, "database upgrade needed"; end end end); engines[sql.db2uri(params)] = engine; end module:provides("storage", driver); end function module.command(arg) local config = require "core.configmanager"; local prosodyctl = require "util.prosodyctl"; local command = table.remove(arg, 1); if command == "upgrade" then -- We need to find every unique dburi in the config local uris = {}; for host in pairs(prosody.hosts) do -- luacheck: ignore 431/host local params = normalize_params(config.get(host, "sql") or default_params); uris[sql.db2uri(params)] = params; end print("We will check and upgrade the following databases:\n"); for _, params in pairs(uris) do print("", "["..params.driver.."] "..params.database..(params.host and " on "..params.host or "")); end print(""); print("Ensure you have working backups of the above databases before continuing! "); if not prosodyctl.show_yesno("Continue with the database upgrade? [yN]") then print("Ok, no upgrade. But you do have backups, don't you? ...don't you?? :-)"); return; end -- Upgrade each one for _, params in pairs(uris) do print("Checking "..params.database.."..."); engine = sql:create_engine(params); upgrade_table(engine, params, true); end print("All done!"); elseif command then print("Unknown command: "..command); else print("Available commands:"); print("","upgrade - Perform database upgrade"); end end