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3813
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1 local array = require "util.array"; |
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2 local jid = require "util.jid"; |
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3 local st = require "util.stanza"; |
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4 local xml = require "util.xml"; |
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5 |
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6 local simple_types = { |
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7 -- basic message |
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8 body = "text_tag", |
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9 subject = "text_tag", |
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10 thread = "text_tag", |
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11 |
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12 -- basic presence |
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13 show = "text_tag", |
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14 status = "text_tag", |
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15 priority = "text_tag", |
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16 |
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17 state = {"name", "http://jabber.org/protocol/chatstates"}, |
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18 nick = {"text_tag", "http://jabber.org/protocol/nick", "nick"}, |
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19 delay = {"attr", "urn:xmpp:delay", "delay", "stamp"}, |
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20 replace = {"attr", "urn:xmpp:message-correct:0", "replace", "id"}, |
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21 |
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22 -- XEP-0045 MUC |
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23 -- TODO history, password, ??? |
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24 join = {"bool_tag", "http://jabber.org/protocol/muc", "x"}, |
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25 |
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26 -- XEP-0071 |
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27 -- FIXME xmlns is awkward |
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28 html = { |
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29 "func", "http://jabber.org/protocol/xhtml-im", "html", |
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30 function (s) --> json string |
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31 return tostring(s:get_child("body", "http://www.w3.org/1999/xhtml")); |
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32 end; |
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33 function (s) --> xml |
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34 return xml.parse([[<html xmlns='http://jabber.org/protocol/xhtml-im'>]]..s..[[</html>]]); |
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35 end; |
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36 }; |
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37 |
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38 -- XEP-0199 |
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39 ping = {"bool_tag", "urn:xmpp:ping", "ping"}, |
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40 |
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41 -- XEP-0030 |
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42 disco = { |
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43 "func", "http://jabber.org/protocol/disco#info", "query", |
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44 function (s) --> array of features |
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45 local identities, features = array(), array(); |
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46 for tag in s:childtags() do |
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47 if tag.name == "identity" and tag.attr.category and tag.attr.type then |
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48 identities:push({ category = tag.attr.category, type = tag.attr.type, name = tag.attr.name }); |
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49 elseif tag.name == "feature" and tag.attr.var then |
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50 features:push(tag.attr.var); |
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51 end |
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52 end |
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53 return { identities = identities, features = features, }; |
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54 end; |
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55 function (s) |
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56 local disco = st.stanza("query", { xmlns = "http://jabber.org/protocol/disco#info" }); |
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57 if type(s) == "table" then |
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58 if s.identities then |
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59 for identity in ipairs(s.identities) do |
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60 disco:tag("identity", { category = identity[1], type = identity[2] }):up(); |
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61 end |
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62 end |
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63 if s.features then |
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64 for feature in ipairs(s.features) do |
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65 disco:tag("feature", { var = feature }):up(); |
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66 end |
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67 end |
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68 end |
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69 return disco; |
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70 end; |
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71 }; |
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72 |
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73 items = { |
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74 "func", "http://jabber.org/protocol/disco#items", "query", |
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75 function (s) --> array of features |
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76 local items = array(); |
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77 for item in s:childtags("item") do |
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78 items:push({ jid = item.attr.jid, node = item.attr.node, name = item.attr.name }); |
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79 end |
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80 return items; |
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81 end; |
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82 function (s) |
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83 local disco = st.stanza("query", { xmlns = "http://jabber.org/protocol/disco#items" }); |
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84 if type(s) == "table" then |
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85 for _, item in ipairs(s) do |
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86 disco:tag("item", item); |
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87 end |
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88 end |
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89 return disco; |
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90 end; |
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91 }; |
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92 |
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93 oob_url = {"func", "jabber:iq:oob", "query", |
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94 function (s) |
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95 return s:get_child_text("url"); |
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96 end; |
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97 function (s) |
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98 return st.stanza("query", { xmlns = "jabber:iq:oob" }):text_tag("url", s); |
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99 end; |
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100 }; |
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101 }; |
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102 |
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103 local implied_kinds = { |
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104 disco = "iq", |
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105 items = "iq", |
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106 ping = "iq", |
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107 |
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108 body = "message", |
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109 html = "message", |
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110 replace = "message", |
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111 state = "message", |
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112 subject = "message", |
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113 thread = "message", |
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114 |
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115 join = "presence", |
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116 priority = "presence", |
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117 show = "presence", |
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118 status = "presence", |
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119 } |
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120 |
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121 local kind_by_type = { |
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122 get = "iq", set = "iq", result = "iq", |
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123 normal = "message", chat = "message", headline = "message", groupchat = "message", |
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124 available = "presence", unavailable = "presence", |
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125 subscribe = "presence", unsubscribe = "presence", |
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126 subscribed = "presence", unsubscribed = "presence", |
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127 } |
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128 |
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129 local function st2json(s) |
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130 local t = { |
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131 kind = s.name, |
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132 type = s.attr.type, |
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133 to = s.attr.to, |
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134 from = s.attr.from, |
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135 id = s.attr.id, |
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136 }; |
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137 if s.name == "presence" and not s.attr.type then |
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138 t.type = "available"; |
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139 end |
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140 |
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141 if t.to then |
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142 t.to = jid.prep(t.to); |
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143 if not t.to then return nil, "invalid-jid-to"; end |
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144 end |
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145 if t.from then |
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146 t.from = jid.prep(t.from); |
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147 if not t.from then return nil, "invalid-jid-from"; end |
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148 end |
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149 |
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150 if t.type == "error" then |
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151 local err_typ, err_condition, err_text = s:get_error(); |
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152 t.error = { |
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153 type = err_typ, |
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154 condition = err_condition, |
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155 text = err_text |
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156 }; |
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157 return t; |
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158 end |
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159 |
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160 for k, typ in pairs(simple_types) do |
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161 if typ == "text_tag" then |
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162 t[k] = s:get_child_text(k); |
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163 elseif typ[1] == "text_tag" then |
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164 t[k] = s:get_child_text(typ[3], typ[2]); |
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165 elseif typ[1] == "name" then |
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166 local child = s:get_child(nil, typ[2]); |
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167 if child then |
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168 t[k] = child.name; |
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169 end |
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170 elseif typ[1] == "attr" then |
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171 local child = s:get_child(typ[3], typ[2]) |
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172 if child then |
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173 t[k] = child.attr[typ[4]]; |
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174 end |
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175 elseif typ[1] == "bool_tag" then |
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176 if s:get_child(typ[3], typ[2]) then |
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177 t[k] = true; |
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178 end |
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179 elseif typ[1] == "func" then |
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180 local child = s:get_child(typ[3], typ[2] or k); |
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181 -- TODO handle err |
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182 if child then |
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183 t[k] = typ[4](child); |
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184 end |
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185 end |
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186 end |
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187 |
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188 return t; |
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189 end |
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190 |
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191 local function json2st(t) |
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192 local kind = t.kind or kind_by_type[t.type]; |
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193 if not kind then |
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194 for k, implied in pairs(implied_kinds) do |
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195 if t[k] then |
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196 kind = implied; |
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197 break |
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198 end |
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199 end |
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200 end |
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201 |
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202 local s = st.stanza(kind or "message", { |
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203 type = t.type ~= "available" and t.type or nil, |
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204 to = jid.prep(t.to); |
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205 from = jid.prep(t.from); |
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206 id = t.id, |
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207 }); |
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208 |
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209 if t.to and not s.attr.to then |
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210 return nil, "invalid-jid-to"; |
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211 end |
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212 if t.from and not s.attr.from then |
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213 return nil, "invalid-jid-from"; |
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214 end |
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215 |
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216 if t.error then |
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217 return st.error_reply(st.reply(s), t.error.type, t.error.condition, t.error.text); |
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218 elseif t.type == "error" then |
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219 s:text_tag("error", t.body, { code = t.error_code and tostring(t.error_code) }); |
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220 return s; |
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221 end |
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222 |
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223 for k, v in pairs(t) do |
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224 local typ = simple_types[k]; |
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225 if typ then |
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226 if typ == "text_tag" then |
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227 s:text_tag(k, v); |
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228 elseif typ[1] == "text_tag" then |
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229 s:text_tag(typ[3] or k, v, typ[2] and { xmlns = typ[2] }); |
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230 elseif typ[1] == "name" then |
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231 s:tag(v, { xmlns = typ[2] }):up(); |
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232 elseif typ[1] == "attr" then |
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233 s:tag(typ[3] or k, { xmlns = typ[2], [ typ[4] or k ] = v }):up(); |
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234 elseif typ[1] == "bool_tag" then |
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235 s:tag(typ[3] or k, { xmlns = typ[2] }):up(); |
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236 elseif typ[1] == "func" then |
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237 s:add_child(typ[5](v)):up(); |
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238 end |
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239 end |
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240 end |
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241 |
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242 s:reset(); |
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243 |
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244 return s; |
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245 end |
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246 |
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247 return { |
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248 st2json = st2json; |
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249 json2st = json2st; |
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250 }; |
