mirror of
https://github.com/bjc/prosody.git
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292 lines
6.8 KiB
Lua
292 lines
6.8 KiB
Lua
-- Prosody IM
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-- Copyright (C) 2008-2010 Matthew Wild
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-- Copyright (C) 2008-2010 Waqas Hussain
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--
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-- This project is MIT/X11 licensed. Please see the
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-- COPYING file in the source package for more information.
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--
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local setmetatable = setmetatable;
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local pairs, ipairs = pairs, ipairs;
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local tostring, type, next = tostring, type, next;
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local t_concat = table.concat;
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local st = require "util.stanza";
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local jid_prep = require "util.jid".prep;
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module "dataforms"
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local xmlns_forms = 'jabber:x:data';
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local form_t = {};
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local form_mt = { __index = form_t };
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function new(layout)
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return setmetatable(layout, form_mt);
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end
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function form_t.form(layout, data, formtype)
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local form = st.stanza("x", { xmlns = xmlns_forms, type = formtype or "form" });
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if layout.title then
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form:tag("title"):text(layout.title):up();
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end
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if layout.instructions then
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form:tag("instructions"):text(layout.instructions):up();
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end
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for n, field in ipairs(layout) do
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local field_type = field.type or "text-single";
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-- Add field tag
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form:tag("field", { type = field_type, var = field.name, label = field.label });
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local value = (data and data[field.name]) or field.value;
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if value then
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-- Add value, depending on type
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if field_type == "hidden" then
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if type(value) == "table" then
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-- Assume an XML snippet
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form:tag("value")
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:add_child(value)
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:up();
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else
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form:tag("value"):text(tostring(value)):up();
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end
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elseif field_type == "boolean" then
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form:tag("value"):text((value and "1") or "0"):up();
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elseif field_type == "fixed" then
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elseif field_type == "jid-multi" then
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for _, jid in ipairs(value) do
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form:tag("value"):text(jid):up();
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end
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elseif field_type == "jid-single" then
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form:tag("value"):text(value):up();
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elseif field_type == "text-single" or field_type == "text-private" then
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form:tag("value"):text(value):up();
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elseif field_type == "text-multi" then
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-- Split into multiple <value> tags, one for each line
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for line in value:gmatch("([^\r\n]+)\r?\n*") do
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form:tag("value"):text(line):up();
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end
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elseif field_type == "list-single" then
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local has_default = false;
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for _, val in ipairs(value) do
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if type(val) == "table" then
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form:tag("option", { label = val.label }):tag("value"):text(val.value):up():up();
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if val.default and (not has_default) then
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form:tag("value"):text(val.value):up();
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has_default = true;
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end
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else
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form:tag("option", { label= val }):tag("value"):text(tostring(val)):up():up();
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end
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end
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elseif field_type == "list-multi" then
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for _, val in ipairs(value) do
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if type(val) == "table" then
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form:tag("option", { label = val.label }):tag("value"):text(val.value):up():up();
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if val.default then
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form:tag("value"):text(val.value):up();
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end
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else
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form:tag("option", { label= val }):tag("value"):text(tostring(val)):up():up();
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end
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end
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end
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end
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if field.required then
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form:tag("required"):up();
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end
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-- Jump back up to list of fields
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form:up();
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end
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return form;
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end
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local field_readers = {};
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local field_verifiers = {};
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function form_t.data(layout, stanza)
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local data = {};
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local errors = {};
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for _, field in ipairs(layout) do
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local tag;
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for field_tag in stanza:childtags() do
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if field.name == field_tag.attr.var then
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tag = field_tag;
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break;
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end
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end
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if not tag then
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if field.required then
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errors[field.name] = "Required value missing";
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end
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else
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local reader = field_readers[field.type];
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local verifier = field.verifier or field_verifiers[field.type];
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if reader then
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data[field.name] = reader(tag);
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if verifier then
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errors[field.name] = verifier(data[field.name], tag, field.required);
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end
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end
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end
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end
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if next(errors) then
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return data, errors;
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end
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return data;
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end
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field_readers["text-single"] =
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function (field_tag)
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local value = field_tag:child_with_name("value");
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if value then
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return value[1];
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end
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end
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field_verifiers["text-single"] =
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function (data, field_tag, required)
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if ((not data) or (#data == 0)) and required then
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return "Required value missing";
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end
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end
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field_readers["text-private"] =
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field_readers["text-single"];
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field_verifiers["text-private"] =
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field_verifiers["text-single"];
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field_readers["jid-single"] =
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field_readers["text-single"];
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field_verifiers["jid-single"] =
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function (data, field_tag, required)
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if ((not data) or (#data == 0)) and required then
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return "Required value missing";
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end
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if not jid_prep(data) then
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return "Invalid JID";
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end
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end
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field_readers["jid-multi"] =
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function (field_tag)
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local result = {};
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for value_tag in field_tag:childtags() do
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if value_tag.name == "value" then
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result[#result+1] = value_tag[1];
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end
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end
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return result;
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end
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field_verifiers["jid-multi"] =
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function (data, field_tag, required)
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if #data == 0 and required then
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return "Required value missing";
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end
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for _, jid in ipairs(data) do
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if not jid_prep(jid) then
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return "Invalid JID";
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end
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end
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end
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field_readers["text-multi"] =
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function (field_tag)
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local result = {};
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for value_tag in field_tag:childtags() do
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if value_tag.name == "value" then
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result[#result+1] = value_tag[1];
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end
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end
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return t_concat(result, "\n");
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end
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field_verifiers["text-multi"] =
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field_verifiers["text-single"];
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field_readers["list-single"] =
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field_readers["text-single"];
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field_verifiers["list-single"] =
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field_verifiers["text-single"];
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field_readers["list-multi"] =
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function (field_tag)
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local result = {};
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for value_tag in field_tag:childtags() do
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if value_tag.name == "value" then
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result[#result+1] = value_tag[1];
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end
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end
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return result;
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end
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field_verifiers["list-multi"] =
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function (data, field_tag, required)
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if #data == 0 and required then
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return "Required value missing";
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end
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end
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field_readers["boolean"] =
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function (field_tag)
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local value = field_tag:child_with_name("value");
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if value then
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if value[1] == "1" or value[1] == "true" then
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return true;
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else
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return false;
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end
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end
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end
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field_verifiers["boolean"] =
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function (data, field_tag, required)
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data = field_readers["text-single"](field_tag);
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if #data == 0 and required then
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return "Required value missing";
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end
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if data ~= "1" and data ~= "true" and data ~= "0" and data ~= "false" then
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return "Invalid boolean representation";
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end
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end
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field_readers["hidden"] =
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function (field_tag)
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local value = field_tag:child_with_name("value");
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if value then
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return value[1];
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end
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end
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field_verifiers["hidden"] =
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function (data, field_tag, required)
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return nil;
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end
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return _M;
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--[=[
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Layout:
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{
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title = "MUC Configuration",
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instructions = [[Use this form to configure options for this MUC room.]],
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{ name = "FORM_TYPE", type = "hidden", required = true };
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{ name = "field-name", type = "field-type", required = false };
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}
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--]=]
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