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if not modules then modules = { } end modules ['util-sql-users'] = {
version = 1.001,
comment = "companion to lmx-*",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- This is experimental code and currently part of the base installation simply
-- because it's easier to dirtribute this way. Eventually it will be documented
-- and the related scripts will show up as well.
-- local sql = sql or (utilities and utilities.sql) or require("util-sql")
-- local md5 = md5 or require("md5")
local sql = utilities.sql
local format, upper, find, gsub, topattern = string.format, string.upper, string.find, string.gsub, string.topattern
local sumhexa = md5.sumhexa
local toboolean = string.toboolean
local sql = utilities.sql
local users = { }
sql.users = users
local trace_sql = false trackers.register("sql.users.trace", function(v) trace_sql = v end)
local report = logs.reporter("sql","users")
local function encryptpassword(str)
if not str or str == "" then
return ""
elseif find(str,"^MD5:") then
return str
else
return upper(format("MD5:%s",sumhexa(str)))
end
end
local function cleanuppassword(str)
return (gsub(str,"^MD5:",""))
end
local function samepasswords(one,two)
if not one or not two then
return false
end
if not find(one,"^MD5:") then
one = encryptpassword(one)
end
if not find(two,"^MD5:") then
two = encryptpassword(two)
end
return one == two
end
local function validaddress(address,addresses)
if address and addresses and address ~= "" and addresses ~= "" then
if find(address,topattern(addresses,true,true)) then
return true, "valid remote address"
end
return false, "invalid remote address"
else
return true, "no remote address check"
end
end
users.encryptpassword = encryptpassword
users.cleanuppassword = cleanuppassword
users.samepasswords = samepasswords
users.validaddress = validaddress
-- print(users.encryptpassword("test")) -- MD5:098F6BCD4621D373CADE4E832627B4F6
local function checkeddb(presets,datatable)
return sql.usedatabase(presets,datatable or presets.datatable or "users")
end
users.usedb = checkeddb
local groupnames = { }
local groupnumbers = { }
local function registergroup(name)
local n = #groupnames + 1
groupnames [n] = name
groupnames [tostring(n)] = name
groupnames [name] = name
groupnumbers[n] = n
groupnumbers[tostring(n)] = n
groupnumbers[name] = n
return n
end
registergroup("superuser")
registergroup("administrator")
registergroup("user")
registergroup("guest")
users.groupnames = groupnames
users.groupnumbers = groupnumbers
-- password 'test':
--
-- INSERT insert into users (`name`,`password`,`group`,`enabled`) values ('...','MD5:098F6BCD4621D373CADE4E832627B4F6',1,1) ;
local template =[[
CREATE TABLE `users` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(80) NOT NULL,
`fullname` varchar(80) NOT NULL,
`password` varchar(50) DEFAULT NULL,
`group` int(11) NOT NULL,
`enabled` int(11) DEFAULT '1',
`email` varchar(80) DEFAULT NULL,
`address` varchar(256) DEFAULT NULL,
`theme` varchar(50) DEFAULT NULL,
`data` longtext,
PRIMARY KEY (`id`),
UNIQUE KEY `name_unique` (`name`)
) DEFAULT CHARSET = utf8 ;
]]
local converter, fields = sql.makeconverter {
{ name = "id", type = "number" },
{ name = "name", type = "string" },
{ name = "fullname", type = "string" },
{ name = "password", type = "string" },
{ name = "group", type = groupnames },
{ name = "enabled", type = "boolean" },
{ name = "email", type = "string" },
{ name = "address", type = "string" },
{ name = "theme", type = "string" },
{ name = "data", type = "deserialize" },
}
function users.createdb(presets,datatable)
local db = checkeddb(presets,datatable)
db.execute {
template = template,
variables = {
basename = db.basename,
},
}
report("datatable %a created in %a",db.name,db.base)
return db
end
local template =[[
SELECT
%fields%
FROM
%basename%
WHERE
`name` = '%[name]%'
AND
`password` = '%[password]%'
;
]]
local template =[[
SELECT
%fields%
FROM
%basename%
WHERE
`name` = '%[name]%'
;
]]
function users.valid(db,username,password,address)
local data = db.execute {
template = template,
converter = converter,
variables = {
basename = db.basename,
fields = fields,
name = username,
},
}
local data = data and data[1]
if not data then
return false, "unknown user"
elseif not data.enabled then
return false, "disabled user"
elseif data.password ~= encryptpassword(password) then
return false, "wrong password"
elseif not validaddress(address,data.address) then
return false, "invalid address"
else
data.password = nil
return data, "okay"
end
end
local template =[[
INSERT INTO %basename% (
`name`,
`fullname`,
`password`,
`group`,
`enabled`,
`email`,
`address`,
`theme`,
`data`
) VALUES (
'%[name]%',
'%[fullname]%',
'%[password]%',
'%[group]%',
'%[enabled]%',
'%[email]%',
'%[address]%',
'%[theme]%',
'%[data]%'
) ;
]]
function users.add(db,specification)
local name = specification.username or specification.name
if not name or name == "" then
return
end
local data = specification.data
db.execute {
template = template,
variables = {
basename = db.basename,
name = name,
fullname = name or fullname,
password = encryptpassword(specification.password or ""),
group = groupnumbers[specification.group] or groupnumbers.guest,
enabled = toboolean(specification.enabled) and "1" or "0",
email = specification.email,
address = specification.address,
theme = specification.theme,
data = type(data) == "table" and db.serialize(data,"return") or "",
},
}
end
local template =[[
SELECT
%fields%
FROM
%basename%
WHERE
`name` = '%[name]%' ;
]]
function users.getbyname(db,name)
local data = db.execute {
template = template,
converter = converter,
variables = {
basename = db.basename,
fields = fields,
name = name,
},
}
return data and data[1] or nil
end
local template =[[
SELECT
%fields%
FROM
%basename%
WHERE
`id` = '%id%' ;
]]
local function getbyid(db,id)
local data = db.execute {
template = template,
converter = converter,
variables = {
basename = db.basename,
fields = fields,
id = id,
},
}
return data and data[1] or nil
end
users.getbyid = getbyid
local template =[[
UPDATE
%basename%
SET
`fullname` = '%[fullname]%',
`password` = '%[password]%',
`group` = '%[group]%',
`enabled` = '%[enabled]%',
`email` = '%[email]%',
`address` = '%[address]%',
`theme` = '%[theme]%',
`data` = '%[data]%'
WHERE
`id` = '%id%'
;
]]
function users.save(db,id,specification)
id = tonumber(id)
if not id then
return
end
local user = getbyid(db,id)
if tonumber(user.id) ~= id then
return
end
local fullname = specification.fullname == nil and user.fulname or specification.fullname
local password = specification.password == nil and user.password or specification.password
local group = specification.group == nil and user.group or specification.group
local enabled = specification.enabled == nil and user.enabled or specification.enabled
local email = specification.email == nil and user.email or specification.email
local address = specification.address == nil and user.address or specification.address
local theme = specification.theme == nil and user.theme or specification.theme
local data = specification.data == nil and user.data or specification.data
db.execute {
template = template,
variables = {
basename = db.basename,
id = id,
fullname = fullname,
password = encryptpassword(password),
group = groupnumbers[group],
enabled = toboolean(enabled) and "1" or "0",
email = email,
address = address,
theme = theme,
data = type(data) == "table" and db.serialize(data,"return") or "",
},
}
return getbyid(db,id)
end
local template =[[
DELETE FROM
%basename%
WHERE
`id` = '%id%' ;
]]
function users.remove(db,id)
db.execute {
template = template,
variables = {
basename = db.basename,
id = id,
},
}
end
local template =[[
SELECT
%fields%
FROM
%basename%
ORDER BY
`name` ;
]]
function users.collect(db) -- maybe also an id/name only variant
local records, keys = db.execute {
template = template,
converter = converter,
variables = {
basename = db.basename,
fields = fields,
},
}
return records, keys
end
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