prosody
de76f566159e
util/dataforms.lua

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util/dataforms.lua @ 11159:de76f566159e 0.11

net.http.server: Don't send Content-Length on 1xx/204 responses, per RFC (fixes #1596)
author Matthew Wild <mwild1@gmail.com>
date Tue, 13 Oct 2020 11:55:28 +0100
parent 9246:397e8e5a2f1f
child 11026:a086825ed73a
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rev   line source
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diff changeset
1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9 local setmetatable = setmetatable;
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10 local ipairs = ipairs;
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11 local type, next = type, next;
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12 local tonumber = tonumber;
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13 local t_concat = table.concat;
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14 local st = require "util.stanza";
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15 local jid_prep = require "util.jid".prep;
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16
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17 local _ENV = nil;
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18 -- luacheck: std none
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19
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20 local xmlns_forms = 'jabber:x:data';
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21 local xmlns_validate = 'http://jabber.org/protocol/xdata-validate';
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22
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23 local form_t = {};
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24 local form_mt = { __index = form_t };
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25
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26 local function new(layout)
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27 return setmetatable(layout, form_mt);
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28 end
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29
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30 function form_t.form(layout, data, formtype)
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31 if not formtype then formtype = "form" end
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32 local form = st.stanza("x", { xmlns = xmlns_forms, type = formtype });
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33 if formtype == "cancel" then
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34 return form;
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35 end
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36 if formtype ~= "submit" then
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37 if layout.title then
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38 form:tag("title"):text(layout.title):up();
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39 end
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40 if layout.instructions then
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41 form:tag("instructions"):text(layout.instructions):up();
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42 end
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43 end
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44 for _, field in ipairs(layout) do
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45 local field_type = field.type or "text-single";
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46 -- Add field tag
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47 form:tag("field", { type = field_type, var = field.var or field.name, label = formtype ~= "submit" and field.label or nil });
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48
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49 if formtype ~= "submit" then
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50 if field.desc then
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51 form:text_tag("desc", field.desc);
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52 end
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53 end
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54
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55 if formtype == "form" and field.datatype then
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56 form:tag("validate", { xmlns = xmlns_validate, datatype = field.datatype });
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57 -- <basic/> assumed
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58 form:up();
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59 end
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60
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61
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62 local value = field.value;
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63 local options = field.options;
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64
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65 if data and data[field.name] ~= nil then
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66 value = data[field.name];
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67
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68 if formtype == "form" and type(value) == "table"
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69 and (field_type == "list-single" or field_type == "list-multi") then
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70 -- Allow passing dynamically generated options as values
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71 options, value = value, nil;
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72 end
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73 end
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74
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75 if formtype == "form" and options then
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76 local defaults = {};
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77 for _, val in ipairs(options) do
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78 if type(val) == "table" then
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79 form:tag("option", { label = val.label }):tag("value"):text(val.value):up():up();
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80 if val.default then
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81 defaults[#defaults+1] = val.value;
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82 end
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83 else
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84 form:tag("option", { label= val }):tag("value"):text(val):up():up();
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85 end
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86 end
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87 if not value then
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88 if field_type == "list-single" then
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89 value = defaults[1];
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90 elseif field_type == "list-multi" then
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91 value = defaults;
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92 end
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93 end
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94 end
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95
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96 if value ~= nil then
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97 if type(value) == "number" then
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98 -- TODO validate that this is ok somehow, eg check field.datatype
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99 value = ("%g"):format(value);
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100 end
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101 -- Add value, depending on type
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102 if field_type == "hidden" then
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103 if type(value) == "table" then
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104 -- Assume an XML snippet
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105 form:tag("value")
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106 :add_child(value)
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107 :up();
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108 else
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109 form:tag("value"):text(value):up();
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110 end
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111 elseif field_type == "boolean" then
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112 form:tag("value"):text((value and "1") or "0"):up();
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113 elseif field_type == "fixed" then
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114 form:tag("value"):text(value):up();
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115 elseif field_type == "jid-multi" then
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116 for _, jid in ipairs(value) do
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117 form:tag("value"):text(jid):up();
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118 end
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119 elseif field_type == "jid-single" then
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120 form:tag("value"):text(value):up();
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121 elseif field_type == "text-single" or field_type == "text-private" then
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122 form:tag("value"):text(value):up();
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123 elseif field_type == "text-multi" then
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124 -- Split into multiple <value> tags, one for each line
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125 for line in value:gmatch("([^\r\n]+)\r?\n*") do
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126 form:tag("value"):text(line):up();
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127 end
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128 elseif field_type == "list-single" then
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129 form:tag("value"):text(value):up();
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130 elseif field_type == "list-multi" then
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131 for _, val in ipairs(value) do
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132 form:tag("value"):text(val):up();
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156c95bfed0b util.dataforms: Allow separation of options from values in list fields
Kim Alvefur <zash@zash.se>
parents: 6981
diff changeset
133 end
1958
e2b0026143c4 util.dataforms: Incorporate slightly modified patch for list-single type from Florob
Matthew Wild <mwild1@gmail.com>
parents: 1945
diff changeset
134 end
845
fc3dced9801e util.dataforms: First commit, incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
135 end
6148
7dcd6f124c93 util.dataforms: Add support for XEP-0221: Data Forms Media Element
Kim Alvefur <zash@zash.se>
parents: 5693
diff changeset
136
7dcd6f124c93 util.dataforms: Add support for XEP-0221: Data Forms Media Element
Kim Alvefur <zash@zash.se>
parents: 5693
diff changeset
137 local media = field.media;
7dcd6f124c93 util.dataforms: Add support for XEP-0221: Data Forms Media Element
Kim Alvefur <zash@zash.se>
parents: 5693
diff changeset
138 if media then
7dcd6f124c93 util.dataforms: Add support for XEP-0221: Data Forms Media Element
Kim Alvefur <zash@zash.se>
parents: 5693
diff changeset
139 form:tag("media", { xmlns = "urn:xmpp:media-element", height = media.height, width = media.width });
7dcd6f124c93 util.dataforms: Add support for XEP-0221: Data Forms Media Element
Kim Alvefur <zash@zash.se>
parents: 5693
diff changeset
140 for _, val in ipairs(media) do
7dcd6f124c93 util.dataforms: Add support for XEP-0221: Data Forms Media Element
Kim Alvefur <zash@zash.se>
parents: 5693
diff changeset
141 form:tag("uri", { type = val.type }):text(val.uri):up()
7dcd6f124c93 util.dataforms: Add support for XEP-0221: Data Forms Media Element
Kim Alvefur <zash@zash.se>
parents: 5693
diff changeset
142 end
7dcd6f124c93 util.dataforms: Add support for XEP-0221: Data Forms Media Element
Kim Alvefur <zash@zash.se>
parents: 5693
diff changeset
143 form:up();
7dcd6f124c93 util.dataforms: Add support for XEP-0221: Data Forms Media Element
Kim Alvefur <zash@zash.se>
parents: 5693
diff changeset
144 end
6149
2ae6e9063e88 Merge 0.9->0.10
Kim Alvefur <zash@zash.se>
parents: 5776 6148
diff changeset
145
9090
56c52cb4d44e util.dataforms: Exclude descriptive text fields from forms of type 'submit'
Kim Alvefur <zash@zash.se>
parents: 9089
diff changeset
146 if formtype == "form" and field.required then
952
ef648f49e734 util.dataforms: Add support for <required/> fields
Matthew Wild <mwild1@gmail.com>
parents: 951
diff changeset
147 form:tag("required"):up();
ef648f49e734 util.dataforms: Add support for <required/> fields
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parents: 951
diff changeset
148 end
5776
bd0ff8ae98a8 Remove all trailing whitespace
Florian Zeitz <florob@babelmonkeys.de>
parents: 5693
diff changeset
149
845
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parents:
diff changeset
150 -- Jump back up to list of fields
fc3dced9801e util.dataforms: First commit, incomplete
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parents:
diff changeset
151 form:up();
fc3dced9801e util.dataforms: First commit, incomplete
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parents:
diff changeset
152 end
851
b48c7ed3f7f8 util.dataforms: Return the form
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parents: 845
diff changeset
153 return form;
845
fc3dced9801e util.dataforms: First commit, incomplete
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parents:
diff changeset
154 end
fc3dced9801e util.dataforms: First commit, incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
155
955
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diff changeset
156 local field_readers = {};
9243
a4c52e304e6f util.dataforms: Add support for XEP-0122: Data Forms Validation
Kim Alvefur <zash@zash.se>
parents: 9242
diff changeset
157 local data_validators = {};
955
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parents: 954
diff changeset
158
9121
e5eb36ee07a2 util.dataforms: Allow passing the current values to be used in stead of omitted fields
Kim Alvefur <zash@zash.se>
parents: 9111
diff changeset
159 function form_t.data(layout, stanza, current)
955
98ca5a753fee util.dataforms: Support for retriving the field value data from forms
Matthew Wild <mwild1@gmail.com>
parents: 954
diff changeset
160 local data = {};
4397
1378e3c79c34 util.dataforms: Add field verification logic
Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
161 local errors = {};
6981
bcaa553de6e8 util.dataforms: Track which fields are included in a form
Kim Alvefur <zash@zash.se>
parents: 6830
diff changeset
162 local present = {};
4397
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parents: 3540
diff changeset
163
1378e3c79c34 util.dataforms: Add field verification logic
Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
164 for _, field in ipairs(layout) do
1378e3c79c34 util.dataforms: Add field verification logic
Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
165 local tag;
6467
77d00a895bbd util/dataforms: Make sure we iterate over field tags
daurnimator <quae@daurnimator.com>
parents: 6148
diff changeset
166 for field_tag in stanza:childtags("field") do
9242
68694c1bd960 util.dataforms: Allow field names to be different from the 'var' attribute
Kim Alvefur <zash@zash.se>
parents: 9121
diff changeset
167 if (field.var or field.name) == field_tag.attr.var then
4397
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Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
168 tag = field_tag;
2219
9e1c6b6a2ee4 util.dataforms: Don't require type when parsing form XML
Florian Zeitz
parents: 2070
diff changeset
169 break;
9e1c6b6a2ee4 util.dataforms: Don't require type when parsing form XML
Florian Zeitz
parents: 2070
diff changeset
170 end
9e1c6b6a2ee4 util.dataforms: Don't require type when parsing form XML
Florian Zeitz
parents: 2070
diff changeset
171 end
4397
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parents: 3540
diff changeset
172
4434
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Florian Zeitz <florob@babelmonkeys.de>
parents: 4397
diff changeset
173 if not tag then
9121
e5eb36ee07a2 util.dataforms: Allow passing the current values to be used in stead of omitted fields
Kim Alvefur <zash@zash.se>
parents: 9111
diff changeset
174 if current and current[field.name] ~= nil then
e5eb36ee07a2 util.dataforms: Allow passing the current values to be used in stead of omitted fields
Kim Alvefur <zash@zash.se>
parents: 9111
diff changeset
175 data[field.name] = current[field.name];
e5eb36ee07a2 util.dataforms: Allow passing the current values to be used in stead of omitted fields
Kim Alvefur <zash@zash.se>
parents: 9111
diff changeset
176 elseif field.required then
4434
51a7c85751b9 util.dataforms: Fix form verification
Florian Zeitz <florob@babelmonkeys.de>
parents: 4397
diff changeset
177 errors[field.name] = "Required value missing";
51a7c85751b9 util.dataforms: Fix form verification
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parents: 4397
diff changeset
178 end
9047
ab3488ee3ca5 util.dataforms: Ensure fields have names when collecting data (fixes traceback, thanks Martin)
Kim Alvefur <zash@zash.se>
parents: 8984
diff changeset
179 elseif field.name then
6981
bcaa553de6e8 util.dataforms: Track which fields are included in a form
Kim Alvefur <zash@zash.se>
parents: 6830
diff changeset
180 present[field.name] = true;
4434
51a7c85751b9 util.dataforms: Fix form verification
Florian Zeitz <florob@babelmonkeys.de>
parents: 4397
diff changeset
181 local reader = field_readers[field.type];
51a7c85751b9 util.dataforms: Fix form verification
Florian Zeitz <florob@babelmonkeys.de>
parents: 4397
diff changeset
182 if reader then
9243
a4c52e304e6f util.dataforms: Add support for XEP-0122: Data Forms Validation
Kim Alvefur <zash@zash.se>
parents: 9242
diff changeset
183 local value, err = reader(tag, field.required);
a4c52e304e6f util.dataforms: Add support for XEP-0122: Data Forms Validation
Kim Alvefur <zash@zash.se>
parents: 9242
diff changeset
184 local validator = field.datatype and data_validators[field.datatype];
a4c52e304e6f util.dataforms: Add support for XEP-0122: Data Forms Validation
Kim Alvefur <zash@zash.se>
parents: 9242
diff changeset
185 if value ~= nil and validator then
a4c52e304e6f util.dataforms: Add support for XEP-0122: Data Forms Validation
Kim Alvefur <zash@zash.se>
parents: 9242
diff changeset
186 local valid, ret = validator(value, field);
a4c52e304e6f util.dataforms: Add support for XEP-0122: Data Forms Validation
Kim Alvefur <zash@zash.se>
parents: 9242
diff changeset
187 if valid then
a4c52e304e6f util.dataforms: Add support for XEP-0122: Data Forms Validation
Kim Alvefur <zash@zash.se>
parents: 9242
diff changeset
188 value = ret;
a4c52e304e6f util.dataforms: Add support for XEP-0122: Data Forms Validation
Kim Alvefur <zash@zash.se>
parents: 9242
diff changeset
189 else
9246
397e8e5a2f1f util.dataforms: Improve default error message for failed datatype validation
Kim Alvefur <zash@zash.se>
parents: 9243
diff changeset
190 value, err = nil, ret or ("Invalid value for data of type " .. field.datatype);
9243
a4c52e304e6f util.dataforms: Add support for XEP-0122: Data Forms Validation
Kim Alvefur <zash@zash.se>
parents: 9242
diff changeset
191 end
a4c52e304e6f util.dataforms: Add support for XEP-0122: Data Forms Validation
Kim Alvefur <zash@zash.se>
parents: 9242
diff changeset
192 end
a4c52e304e6f util.dataforms: Add support for XEP-0122: Data Forms Validation
Kim Alvefur <zash@zash.se>
parents: 9242
diff changeset
193 data[field.name], errors[field.name] = value, err;
4397
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Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
194 end
955
98ca5a753fee util.dataforms: Support for retriving the field value data from forms
Matthew Wild <mwild1@gmail.com>
parents: 954
diff changeset
195 end
4397
1378e3c79c34 util.dataforms: Add field verification logic
Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
196 end
1378e3c79c34 util.dataforms: Add field verification logic
Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
197 if next(errors) then
6981
bcaa553de6e8 util.dataforms: Track which fields are included in a form
Kim Alvefur <zash@zash.se>
parents: 6830
diff changeset
198 return data, errors, present;
955
98ca5a753fee util.dataforms: Support for retriving the field value data from forms
Matthew Wild <mwild1@gmail.com>
parents: 954
diff changeset
199 end
6981
bcaa553de6e8 util.dataforms: Track which fields are included in a form
Kim Alvefur <zash@zash.se>
parents: 6830
diff changeset
200 return data, nil, present;
845
fc3dced9801e util.dataforms: First commit, incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
201 end
fc3dced9801e util.dataforms: First commit, incomplete
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
202
6829
22522443982f util.dataforms: Refactor parsing to reuse simple text parser instead of duplicate code
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
203 local function simple_text(field_tag, required)
22522443982f util.dataforms: Refactor parsing to reuse simple text parser instead of duplicate code
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
204 local data = field_tag:get_child_text("value");
6830
e08f5d081a6c util.dataforms: Fix interaction of required fields and empty string values (fixes #521)
Kim Alvefur <zash@zash.se>
parents: 6829
diff changeset
205 -- XEP-0004 does not say if an empty string is acceptable for a required value
e08f5d081a6c util.dataforms: Fix interaction of required fields and empty string values (fixes #521)
Kim Alvefur <zash@zash.se>
parents: 6829
diff changeset
206 -- so we will follow HTML5 which says that empty string means missing
e08f5d081a6c util.dataforms: Fix interaction of required fields and empty string values (fixes #521)
Kim Alvefur <zash@zash.se>
parents: 6829
diff changeset
207 if required and (data == nil or data == "") then
6829
22522443982f util.dataforms: Refactor parsing to reuse simple text parser instead of duplicate code
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
208 return nil, "Required value missing";
4397
1378e3c79c34 util.dataforms: Add field verification logic
Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
209 end
6830
e08f5d081a6c util.dataforms: Fix interaction of required fields and empty string values (fixes #521)
Kim Alvefur <zash@zash.se>
parents: 6829
diff changeset
210 return data; -- Return whatever get_child_text returned, even if empty string
6829
22522443982f util.dataforms: Refactor parsing to reuse simple text parser instead of duplicate code
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
211 end
4397
1378e3c79c34 util.dataforms: Add field verification logic
Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
212
6829
22522443982f util.dataforms: Refactor parsing to reuse simple text parser instead of duplicate code
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
213 field_readers["text-single"] = simple_text;
22522443982f util.dataforms: Refactor parsing to reuse simple text parser instead of duplicate code
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
214
22522443982f util.dataforms: Refactor parsing to reuse simple text parser instead of duplicate code
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
215 field_readers["text-private"] = simple_text;
955
98ca5a753fee util.dataforms: Support for retriving the field value data from forms
Matthew Wild <mwild1@gmail.com>
parents: 954
diff changeset
216
1944
754eebd31538 util.dataforms: Support for jid-single field type especially for Florob :)
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
217 field_readers["jid-single"] =
4884
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
218 function (field_tag, required)
6829
22522443982f util.dataforms: Refactor parsing to reuse simple text parser instead of duplicate code
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
219 local raw_data, err = simple_text(field_tag, required);
22522443982f util.dataforms: Refactor parsing to reuse simple text parser instead of duplicate code
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
220 if not raw_data then return raw_data, err; end
4884
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
221 local data = jid_prep(raw_data);
6829
22522443982f util.dataforms: Refactor parsing to reuse simple text parser instead of duplicate code
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
222 if not data then
4887
4dd61fe04db4 util.dataforms: Don't return invalid JIDs in jid-single.
Kim Alvefur <zash@zash.se>
parents: 4886
diff changeset
223 return nil, "Invalid JID: " .. raw_data;
4397
1378e3c79c34 util.dataforms: Add field verification logic
Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
224 end
6829
22522443982f util.dataforms: Refactor parsing to reuse simple text parser instead of duplicate code
Kim Alvefur <zash@zash.se>
parents: 6777
diff changeset
225 return data;
4397
1378e3c79c34 util.dataforms: Add field verification logic
Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
226 end
1378e3c79c34 util.dataforms: Add field verification logic
Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
227
3540
bc139431830b Monster whitespace commit (beware the whitespace monster).
Waqas Hussain <waqas20@gmail.com>
parents: 3380
diff changeset
228 field_readers["jid-multi"] =
4884
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
229 function (field_tag, required)
2070
25dc4b9d06b1 util.dataforms: Support for jid-multi field type
Florian Zeitz
parents: 2061
diff changeset
230 local result = {};
4884
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
231 local err = {};
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
232 for value_tag in field_tag:childtags("value") do
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
233 local raw_value = value_tag:get_text();
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
234 local value = jid_prep(raw_value);
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
235 result[#result+1] = value;
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
236 if raw_value and not value then
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
237 err[#err+1] = ("Invalid JID: " .. raw_value);
2070
25dc4b9d06b1 util.dataforms: Support for jid-multi field type
Florian Zeitz
parents: 2061
diff changeset
238 end
25dc4b9d06b1 util.dataforms: Support for jid-multi field type
Florian Zeitz
parents: 2061
diff changeset
239 end
4884
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
240 if #result > 0 then
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
241 return result, (#err > 0 and t_concat(err, "\n") or nil);
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
242 elseif required then
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
243 return nil, "Required value missing";
4397
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Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
244 end
1378e3c79c34 util.dataforms: Add field verification logic
Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
245 end
1378e3c79c34 util.dataforms: Add field verification logic
Florian Zeitz <florob@babelmonkeys.de>
parents: 3540
diff changeset
246
4884
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parents: 4435
diff changeset
247 field_readers["list-multi"] =
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parents: 4435
diff changeset
248 function (field_tag, required)
955
98ca5a753fee util.dataforms: Support for retriving the field value data from forms
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parents: 954
diff changeset
249 local result = {};
4884
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
250 for value in field_tag:childtags("value") do
4928
5211c11dd865 util.dataforms: Fix parsing of -multi fields
Florian Zeitz <florob@babelmonkeys.de>
parents: 4887
diff changeset
251 result[#result+1] = value:get_text();
955
98ca5a753fee util.dataforms: Support for retriving the field value data from forms
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parents: 954
diff changeset
252 end
5693
ef490e9276df util.dataforms: Return nil for empty list-mutli responses, to be consistent with other readers
Florian Zeitz <florob@babelmonkeys.de>
parents: 5551
diff changeset
253 if #result > 0 then
ef490e9276df util.dataforms: Return nil for empty list-mutli responses, to be consistent with other readers
Florian Zeitz <florob@babelmonkeys.de>
parents: 5551
diff changeset
254 return result;
ef490e9276df util.dataforms: Return nil for empty list-mutli responses, to be consistent with other readers
Florian Zeitz <florob@babelmonkeys.de>
parents: 5551
diff changeset
255 elseif required then
ef490e9276df util.dataforms: Return nil for empty list-mutli responses, to be consistent with other readers
Florian Zeitz <florob@babelmonkeys.de>
parents: 5551
diff changeset
256 return nil, "Required value missing";
ef490e9276df util.dataforms: Return nil for empty list-mutli responses, to be consistent with other readers
Florian Zeitz <florob@babelmonkeys.de>
parents: 5551
diff changeset
257 end
955
98ca5a753fee util.dataforms: Support for retriving the field value data from forms
Matthew Wild <mwild1@gmail.com>
parents: 954
diff changeset
258 end
98ca5a753fee util.dataforms: Support for retriving the field value data from forms
Matthew Wild <mwild1@gmail.com>
parents: 954
diff changeset
259
4884
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parents: 4435
diff changeset
260 field_readers["text-multi"] =
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
261 function (field_tag, required)
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
262 local data, err = field_readers["list-multi"](field_tag, required);
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
263 if data then
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
264 data = t_concat(data, "\n");
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
parents: 4435
diff changeset
265 end
b8d852aea3ad util.dataforms: Do field validation and normalization in field readers.
Kim Alvefur <zash@zash.se>
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266 return data, err;
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267 end
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268
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269 field_readers["list-single"] = simple_text;
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270
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271 local boolean_values = {
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272 ["1"] = true, ["true"] = true,
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273 ["0"] = false, ["false"] = false,
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274 };
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275
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276 field_readers["boolean"] =
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277 function (field_tag, required)
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278 local raw_value, err = simple_text(field_tag, required);
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279 if not raw_value then return raw_value, err; end
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280 local value = boolean_values[raw_value];
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281 if value == nil then
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282 return nil, "Invalid boolean representation:" .. raw_value;
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283 end
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284 return value;
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285 end
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286
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287 field_readers["hidden"] =
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288 function (field_tag)
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289 return field_tag:get_child_text("value");
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290 end
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291
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292 data_validators["xs:integer"] =
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293 function (data)
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294 local n = tonumber(data);
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295 if not n then
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296 return false, "not a number";
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297 elseif n % 1 ~= 0 then
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298 return false, "not an integer";
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299 end
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300 return true, n;
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301 end
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302
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303
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304 local function get_form_type(form)
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305 if not st.is_stanza(form) then
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306 return nil, "not a stanza object";
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307 elseif form.attr.xmlns ~= "jabber:x:data" or form.name ~= "x" then
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308 return nil, "not a dataform element";
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309 end
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310 for field in form:childtags("field") do
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311 if field.attr.var == "FORM_TYPE" then
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312 return field:get_child_text("value");
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313 end
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314 end
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315 return "";
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316 end
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317
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318 return {
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319 new = new;
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320 get_type = get_form_type;
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321 };
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322
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323
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324 --[=[
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325
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326 Layout:
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327 {
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328
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329 title = "MUC Configuration",
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330 instructions = [[Use this form to configure options for this MUC room.]],
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331
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332 { name = "FORM_TYPE", type = "hidden", required = true };
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333 { name = "field-name", type = "field-type", required = false };
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334 }
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335
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336
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337 --]=]