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1 #!/usr/bin/env lua
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2
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3 -- module preamble
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4 local _G, _M = _ENV, {}
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5 _ENV = setmetatable({}, {
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6 __index = function(self, key)
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7 local value = _M[key]; if value ~= nil then return value end
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8 return _G[key]
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9 end,
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10 __newindex = _M
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11 })
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12
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13 -- function that encodes certain HTML entities:
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14 -- (not used by the library itself)
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15 function encode_html(text)
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16 return (
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17 string.gsub(
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18 text, '[<>&"]',
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19 function(char)
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20 if char == '<' then
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21 return "<"
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22 elseif char == '>' then
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23 return ">"
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24 elseif char == '&' then
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25 return "&"
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26 elseif char == '"' then
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27 return """
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28 end
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29 end
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30 )
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31 )
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32
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33 end
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34
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35 -- function that encodes special characters for URIs:
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36 -- (not used by the library itself)
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37 function encode_uri(text)
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38 return (
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39 string.gsub(text, "[^0-9A-Za-z_%.~-]",
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40 function (char)
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41 return string.format("%%%02x", string.byte(char))
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42 end
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43 )
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44 )
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45 end
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46
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47 -- function undoing URL encoding:
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48 do
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49 local b0 = string.byte("0")
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50 local b9 = string.byte("9")
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51 local bA = string.byte("A")
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52 local bF = string.byte("F")
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53 local ba = string.byte("a")
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54 local bf = string.byte("f")
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55 function decode_uri(str)
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56 return (
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57 string.gsub(
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58 string.gsub(str, "%+", " "),
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59 "%%([0-9A-Fa-f][0-9A-Fa-f])",
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60 function(hex)
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61 local n1, n2 = string.byte(hex, 1, 2)
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62 if n1 >= b0 and n1 <= b9 then n1 = n1 - b0
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63 elseif n1 >= bA and n1 <= bF then n1 = n1 - bA + 10
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64 elseif n1 >= ba and n1 <= bf then n1 = n1 - ba + 10
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65 else error("Assertion failed") end
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66 if n2 >= b0 and n2 <= b9 then n2 = n2 - b0
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67 elseif n2 >= bA and n2 <= bF then n2 = n2 - bA + 10
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68 elseif n2 >= ba and n2 <= bf then n2 = n2 - ba + 10
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69 else error("Assertion failed") end
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70 return string.char(n1 * 16 + n2)
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71 end
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72 )
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73 )
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74 end
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75 end
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76
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77 -- status codes that carry no response body (in addition to 1xx):
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78 -- (set to "zero_content_length" if Content-Length header is required)
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79 status_without_response_body = {
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80 ["101"] = true, -- list 101 to allow protocol switch
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81 ["204"] = true,
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82 ["205"] = "zero_content_length",
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83 ["304"] = true
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84 }
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85
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86 -- handling of GET/POST param tables:
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87 local new_params_list -- defined later
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88 do
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89 local params_list_mapping = setmetatable({}, {__mode="k"})
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90 local function nextnonempty(tbl, key)
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91 while true do
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92 key = next(tbl, key)
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93 if key == nil then
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94 return nil
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95 end
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96 local value = tbl[key]
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97 if #value > 0 then
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98 return key, value
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99 end
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100 end
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101 end
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102 local function nextvalue(tbl, key)
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103 key = next(tbl, key)
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104 if key == nil then
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105 return nil
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106 end
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107 return key, tbl[key][1]
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108 end
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109 local params_list_metatable = {
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110 __index = function(self, key)
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111 local tbl = {}
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112 self[key] = tbl
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113 return tbl
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114 end,
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115 __pairs = function(self)
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116 return nextnonempty, self, nil
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117 end
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118 }
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119 local params_metatable = {
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120 __index = function(self, key)
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121 return params_list_mapping[self][key][1]
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122 end,
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123 __newindex = function(self, key, value)
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124 params_list_mapping[self][key] = {value}
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125 end,
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126 __pairs = function(self)
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127 return nextvalue, params_list_mapping[self], nil
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128 end
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129 }
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130 -- returns a table to store key value-list pairs (i.e. multiple values),
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131 -- and a second table automatically mapping keys to the first value
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132 -- using the key value-list pairs in the first table:
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133 new_params_list = function()
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134 local params_list = setmetatable({}, params_list_metatable)
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135 local params = setmetatable({}, params_metatable)
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136 params_list_mapping[params] = params_list
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137 return params_list, params
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138 end
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139 end
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140
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141 -- parses URL encoded form data and stores it in
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142 -- a key value-list pairs structure that has to be
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143 -- previously obtained by calling by new_params_list():
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144 local function read_urlencoded_form(tbl, data)
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145 for rawkey, rawvalue in string.gmatch(data, "([^?=&]*)=([^?=&]*)") do
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146 local subtbl = tbl[decode_uri(rawkey)]
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147 subtbl[#subtbl+1] = decode_uri(rawvalue)
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148 end
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149 end
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150
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151 -- extracts first value from each subtable:
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152 local function get_first_values(tbl)
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153 local newtbl = {}
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154 for key, subtbl in pairs(tbl) do
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155 newtbl[key] = subtbl[1]
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156 end
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157 return newtbl
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158 end
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159
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160 function generate_handler(handler, options)
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161 -- swap arguments if necessary (for convenience):
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162 if type(handler) ~= "function" and type(options) == "function" then
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163 handler, options = options, handler
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164 end
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jbe@160
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165 -- helper function to process options:
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166 local function default(name, default_value)
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167 local value = options[name]
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168 if value == nil then
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169 return default_value
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170 else
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171 return value or nil
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172 end
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173 end
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174 -- process options:
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175 options = options or {}
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176 local preamble = "" -- preamble sent with every(!) HTTP response
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177 do
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178 -- named arg "static_headers" is used to create the preamble:
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179 local s = options.static_headers
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180 local t = {}
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181 if s then
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182 if type(s) == "string" then
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183 for line in string.gmatch(s, "[^\r\n]+") do
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184 t[#t+1] = line
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185 end
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186 else
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187 for i, kv in ipairs(options.static_headers) do
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188 if type(kv) == "string" then
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189 t[#t+1] = kv
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190 else
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191 t[#t+1] = kv[1] .. ": " .. kv[2]
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192 end
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193 end
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194 end
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195 end
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196 t[#t+1] = ""
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197 preamble = table.concat(t, "\r\n")
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198 end
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199 local input_chunk_size = options.maximum_input_chunk_size or options.chunk_size or 16384
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200 local output_chunk_size = options.minimum_output_chunk_size or options.chunk_size or 1024
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201 local header_size_limit = options.header_size_limit or 1024*1024
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202 local body_size_limit = options.body_size_limit or 64*1024*1024
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203 local request_idle_timeout = default("request_idle_timeout", 330)
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204 local request_header_timeout = default("request_header_timeout", 30)
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205 local request_body_timeout = default("request_body_timeout", 60)
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206 local request_response_timeout = default("request_response_timeout", 1800)
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207 local poll = options.poll_function or moonbridge_io.poll
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208 -- return socket handler:
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209 return function(socket)
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210 local socket_set = {[socket] = true} -- used for poll function
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211 local survive = true -- set to false if process shall be terminated later
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212 local consume -- function that reads some input if possible
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213 -- function that drains some input if possible:
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214 local function drain()
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215 local bytes, status = socket:drain_nb(input_chunk_size)
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216 if not bytes or status == "eof" then
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217 consume = nil
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218 end
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219 end
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220 -- function trying to unblock socket by reading:
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221 local function unblock()
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222 if consume then
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223 poll(socket_set, socket_set)
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224 consume()
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225 else
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226 poll(nil, socket_set)
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227 end
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228 end
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jbe@163
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229 -- function that enforces consumption of all input:
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230 local function consume_all()
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231 while consume do
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232 poll(socket_set, nil)
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233 consume()
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234 end
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235 end
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jbe@163
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236 -- handle requests in a loop:
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237 repeat
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238 -- table for caching nil values:
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239 local headers_value_nil = {}
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240 -- create a new request object:
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241 local request -- allow references to local variable
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242 request = {
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243 -- allow access to underlying socket:
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244 socket = socket,
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245 -- cookies are simply stored in a table:
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246 cookies = {},
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247 -- table mapping header field names to value-lists
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248 -- (raw access, but case-insensitive):
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249 headers = setmetatable({}, {
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250 __index = function(self, key)
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251 local lowerkey = string.lower(key)
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252 if lowerkey == key then
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253 return
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254 end
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255 local result = rawget(self, lowerkey)
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256 if result == nil then
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257 result = {}
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258 end
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259 self[lowerkey] = result
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260 self[key] = result
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261 return result
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262 end
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263 }),
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264 -- table mapping header field names to value-lists
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265 -- (for headers with comma separated values):
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266 headers_csv_table = setmetatable({}, {
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267 __index = function(self, key)
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268 local result = {}
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269 for i, line in ipairs(request.headers[key]) do
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270 for entry in string.gmatch(line, "[^,]+") do
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271 local value = string.match(entry, "^[ \t]*(..-)[ \t]*$")
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272 if value then
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273 result[#result+1] = value
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274 end
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275 end
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276 end
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277 self[key] = result
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278 return result
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279 end
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280 }),
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281 -- table mapping header field names to a comma separated string
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282 -- (for headers with comma separated values):
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283 headers_csv_string = setmetatable({}, {
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284 __index = function(self, key)
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285 local result = {}
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286 for i, line in ipairs(request.headers[key]) do
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287 result[#result+1] = line
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288 end
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289 result = string.concat(result, ", ")
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290 self[key] = result
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291 return result
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292 end
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293 }),
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294 -- table mapping header field names to a single string value
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295 -- (or false if header has been sent multiple times):
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296 headers_value = setmetatable({}, {
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297 __index = function(self, key)
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298 if headers_value_nil[key] then
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299 return nil
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300 end
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jbe@165
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301 local result = nil
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302 local values = request.headers_csv_table[key]
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jbe@165
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303 if #values == 0 then
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304 headers_value_nil[key] = true
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305 elseif #values == 1 then
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306 result = values[1]
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307 else
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308 result = false
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309 end
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310 self[key] = result
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311 return result
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312 end
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313 }),
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314 -- table mapping header field names to a flag table,
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315 -- indicating if the comma separated value contains certain entries:
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316 headers_flags = setmetatable({}, {
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317 __index = function(self, key)
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318 local result = setmetatable({}, {
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319 __index = function(self, key)
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320 local lowerkey = string.lower(key)
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321 local result = rawget(self, lowerkey) or false
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322 self[lowerkey] = result
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323 self[key] = result
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324 return result
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325 end
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326 })
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jbe@165
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327 for i, value in ipairs(request.headers_csv_table[key]) do
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328 result[string.lower(value)] = true
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329 end
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jbe@165
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330 self[key] = result
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331 return result
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332 end
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333 })
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334 }
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jbe@162
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335 -- local variables to track the state:
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336 local state = "init" -- one of:
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jbe@162
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337 -- "init" (initial state)
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jbe@163
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338 -- "prepare" (configureation in preparation)
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jbe@162
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339 -- "no_status_sent" (configuration complete)
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jbe@162
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340 -- "info_status_sent" (1xx status code has been sent)
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jbe@162
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341 -- "bodyless_status_sent" (204/304 status code has been sent)
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jbe@162
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342 -- "status_sent" (regular status code has been sent)
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jbe@162
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343 -- "headers_sent" (headers have been terminated)
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jbe@162
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344 -- "finished" (request has been answered completely)
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jbe@163
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345 -- "faulty" (I/O or protocaol error)
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jbe@162
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346 local close_requested = false -- "Connection: close" requested
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jbe@162
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347 local close_responded = false -- "Connection: close" sent
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jbe@162
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348 local content_length = nil -- value of Content-Length header sent
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jbe@164
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349 local chunk_parts = {} -- list of chunks to send
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jbe@164
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350 local chunk_bytes = 0 -- sum of lengths of chunks to send
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jbe@163
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351 -- functions to assert proper output/closing:
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jbe@163
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352 local function assert_output(...)
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jbe@163
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353 local retval, errmsg = ...
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jbe@163
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354 if retval then return ... end
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jbe@163
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355 state = "faulty"
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jbe@163
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356 socket:reset()
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jbe@163
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357 error("Could not send data to client: " .. errmsg)
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358 end
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jbe@163
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359 local function assert_close(...)
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jbe@163
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360 local retval, errmsg = ...
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jbe@163
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361 if retval then return ... end
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jbe@163
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362 state = "faulty"
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jbe@163
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363 error("Could not finish sending data to client: " .. errmsg)
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364 end
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jbe@164
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365 -- function to assert non-faulty handle:
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jbe@164
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366 local function assert_not_faulty()
|
jbe@164
|
367 assert(state ~= "faulty", "Tried to use faulty request handle")
|
jbe@164
|
368 end
|
jbe@162
|
369 -- functions to send data to the browser:
|
jbe@160
|
370 local function send(...)
|
jbe@163
|
371 assert_output(socket:write_call(unblock, ...))
|
jbe@38
|
372 end
|
jbe@162
|
373 local function send_flush(...)
|
jbe@163
|
374 assert_output(socket:flush_call(unblock, ...))
|
jbe@162
|
375 end
|
jbe@163
|
376 -- function to finish request:
|
jbe@163
|
377 local function finish()
|
jbe@163
|
378 if close_responded then
|
jbe@163
|
379 -- discard any input:
|
jbe@163
|
380 consume = drain
|
jbe@163
|
381 -- close output stream:
|
jbe@163
|
382 send_flush()
|
jbe@163
|
383 assert_close(socket:finish())
|
jbe@163
|
384 -- wait for EOF of peer to avoid immediate TCP RST condition:
|
jbe@163
|
385 consume_all()
|
jbe@163
|
386 -- fully close socket:
|
jbe@163
|
387 assert_close(socket:close())
|
jbe@163
|
388 else
|
jbe@163
|
389 send_flush()
|
jbe@163
|
390 consume_all()
|
jbe@163
|
391 end
|
jbe@163
|
392 end
|
jbe@164
|
393 -- function that writes out buffered chunks (without flushing the socket):
|
jbe@164
|
394 function send_chunk()
|
jbe@164
|
395 if chunk_bytes > 0 then
|
jbe@164
|
396 assert_output(socket:write(string.format("%x\r\n", chunk_bytes)))
|
jbe@164
|
397 for i = 1, #chunk_parts do -- TODO: evaluated only once?
|
jbe@164
|
398 send(chunk_parts[i])
|
jbe@164
|
399 chunk_parts[i] = nil
|
jbe@164
|
400 end
|
jbe@164
|
401 chunk_bytes = 0
|
jbe@164
|
402 send("\r\n")
|
jbe@164
|
403 end
|
jbe@164
|
404 end
|
jbe@164
|
405 -- function to prepare (or skip) body processing:
|
jbe@162
|
406 local function prepare()
|
jbe@164
|
407 assert_not_faulty()
|
jbe@162
|
408 if state == "prepare" then
|
jbe@164
|
409 error("Unexpected internal status in HTTP engine (recursive prepare)")
|
jbe@162
|
410 elseif state ~= "init" then
|
jbe@162
|
411 return
|
jbe@162
|
412 end
|
jbe@162
|
413 state = "prepare"
|
jbe@162
|
414 -- TODO
|
jbe@162
|
415 state = "no_status_sent"
|
jbe@162
|
416 end
|
jbe@163
|
417 -- method to ignore input and close connection after response:
|
jbe@163
|
418 function request:monologue()
|
jbe@164
|
419 assert_not_faulty()
|
jbe@163
|
420 if
|
jbe@163
|
421 state == "headers_sent" or
|
jbe@163
|
422 state == "finished"
|
jbe@163
|
423 then
|
jbe@163
|
424 error("All HTTP headers have already been sent")
|
jbe@163
|
425 end
|
jbe@164
|
426 local old_state = state
|
jbe@164
|
427 state = "faulty"
|
jbe@163
|
428 consume = drain
|
jbe@163
|
429 close_requested = true
|
jbe@164
|
430 if old_state == "init" or old_state == "prepare" then -- TODO: ok?
|
jbe@163
|
431 state = "no_status_sent"
|
jbe@164
|
432 else
|
jbe@164
|
433 state = old_state
|
jbe@162
|
434 end
|
jbe@162
|
435 end
|
jbe@163
|
436 --
|
jbe@162
|
437 -- method to send a HTTP response status (e.g. "200 OK"):
|
jbe@162
|
438 function request:send_status(status)
|
jbe@162
|
439 prepare()
|
jbe@164
|
440 local old_state = state
|
jbe@164
|
441 state = "faulty"
|
jbe@164
|
442 if old_state == "info_status_sent" then
|
jbe@162
|
443 send_flush("\r\n")
|
jbe@164
|
444 elseif old_state ~= "no_status_sent" then
|
jbe@162
|
445 error("HTTP status has already been sent")
|
jbe@162
|
446 end
|
jbe@162
|
447 local status1 = string.sub(status, 1, 1)
|
jbe@162
|
448 local status3 = string.sub(status, 1, 3)
|
jbe@162
|
449 send("HTTP/1.1 ", status, "\r\n", preamble)
|
jbe@162
|
450 local wrb = status_without_response_body[status3]
|
jbe@162
|
451 if wrb then
|
jbe@162
|
452 state = "bodyless_status_sent"
|
jbe@162
|
453 if wrb == "zero_content_length" then
|
jbe@162
|
454 request:send_header("Content-Length", 0)
|
jbe@162
|
455 end
|
jbe@162
|
456 elseif status1 == "1" then
|
jbe@162
|
457 state = "info_status_sent"
|
jbe@162
|
458 else
|
jbe@162
|
459 state = "status_sent"
|
jbe@162
|
460 end
|
jbe@162
|
461 end
|
jbe@162
|
462 -- method to send a HTTP response header:
|
jbe@162
|
463 -- (key and value must be provided as separate args)
|
jbe@162
|
464 function request:send_header(key, value)
|
jbe@164
|
465 assert_not_faulty()
|
jbe@164
|
466 if
|
jbe@164
|
467 state == "init" or
|
jbe@164
|
468 state == "prepare" or
|
jbe@164
|
469 state == "no_status_sent"
|
jbe@164
|
470 then
|
jbe@162
|
471 error("HTTP status has not been sent yet")
|
jbe@162
|
472 elseif
|
jbe@164
|
473 state == "headers_sent" or
|
jbe@164
|
474 state == "finished"
|
jbe@162
|
475 then
|
jbe@162
|
476 error("All HTTP headers have already been sent")
|
jbe@162
|
477 end
|
jbe@162
|
478 local key_lower = string.lower(key)
|
jbe@162
|
479 if key_lower == "content-length" then
|
jbe@162
|
480 if state == "info_status_sent" then
|
jbe@162
|
481 error("Cannot set Content-Length for informational status response")
|
jbe@162
|
482 end
|
jbe@162
|
483 local cl = assert(tonumber(value), "Invalid content-length")
|
jbe@162
|
484 if content_length == nil then
|
jbe@162
|
485 content_length = cl
|
jbe@162
|
486 elseif content_length == cl then
|
jbe@162
|
487 return
|
jbe@162
|
488 else
|
jbe@162
|
489 error("Content-Length has been set multiple times with different values")
|
jbe@162
|
490 end
|
jbe@162
|
491 elseif key_lower == "connection" then
|
jbe@162
|
492 for entry in string.gmatch(string.lower(value), "[^,]+") do
|
jbe@162
|
493 if string.match(entry, "^[ \t]*close[ \t]*$") then
|
jbe@162
|
494 if state == "info_status_sent" then
|
jbe@162
|
495 error("Cannot set \"Connection: close\" for informational status response")
|
jbe@162
|
496 end
|
jbe@162
|
497 close_responded = true
|
jbe@162
|
498 break
|
jbe@162
|
499 end
|
jbe@162
|
500 end
|
jbe@162
|
501 end
|
jbe@162
|
502 assert_output(socket:write(key, ": ", value, "\r\n"))
|
jbe@162
|
503 end
|
jbe@162
|
504 -- function to terminate header section in response, optionally flushing:
|
jbe@162
|
505 -- (may be called multiple times unless response is finished)
|
jbe@162
|
506 local function finish_headers(with_flush)
|
jbe@162
|
507 if state == "finished" then
|
jbe@162
|
508 error("Response has already been finished")
|
jbe@162
|
509 elseif state == "info_status_sent" then
|
jbe@162
|
510 send_flush("\r\n")
|
jbe@162
|
511 state = "no_status_sent"
|
jbe@162
|
512 elseif state == "bodyless_status_sent" then
|
jbe@162
|
513 if close_requested and not close_responded then
|
jbe@162
|
514 request:send_header("Connection", "close")
|
jbe@162
|
515 end
|
jbe@162
|
516 send("\r\n")
|
jbe@163
|
517 finish()
|
jbe@162
|
518 state = "finished"
|
jbe@162
|
519 elseif state == "status_sent" then
|
jbe@162
|
520 if not content_length then
|
jbe@162
|
521 request:send_header("Transfer-Encoding", "chunked")
|
jbe@162
|
522 end
|
jbe@162
|
523 if close_requested and not close_responded then
|
jbe@162
|
524 request:send_header("Connection", "close")
|
jbe@162
|
525 end
|
jbe@162
|
526 send("\r\n")
|
jbe@162
|
527 if request.method == "HEAD" then
|
jbe@163
|
528 finish()
|
jbe@162
|
529 elseif with_flush then
|
jbe@162
|
530 send_flush()
|
jbe@162
|
531 end
|
jbe@162
|
532 state = "headers_sent"
|
jbe@162
|
533 elseif state ~= "headers_sent" then
|
jbe@162
|
534 error("HTTP status has not been sent yet")
|
jbe@162
|
535 end
|
jbe@162
|
536 end
|
jbe@162
|
537 -- method to finish and flush headers:
|
jbe@162
|
538 function request:finish_headers()
|
jbe@164
|
539 assert_not_faulty()
|
jbe@162
|
540 finish_headers(true)
|
jbe@162
|
541 end
|
jbe@164
|
542 -- method to send body data:
|
jbe@164
|
543 function request:send_data(...)
|
jbe@164
|
544 assert_not_faulty()
|
jbe@164
|
545 if output_state == "info_status_sent" then
|
jbe@164
|
546 error("No (non-informational) HTTP status has been sent yet")
|
jbe@164
|
547 elseif output_state == "bodyless_status_sent" then
|
jbe@164
|
548 error("Cannot send response data for body-less status message")
|
jbe@164
|
549 end
|
jbe@164
|
550 finish_headers(false)
|
jbe@164
|
551 if output_state ~= "headers_sent" then
|
jbe@164
|
552 error("Unexpected internal status in HTTP engine")
|
jbe@164
|
553 end
|
jbe@164
|
554 if request.method == "HEAD" then
|
jbe@164
|
555 return
|
jbe@164
|
556 end
|
jbe@164
|
557 for i = 1, select("#", ...) do
|
jbe@164
|
558 local str = tostring(select(i, ...))
|
jbe@164
|
559 if #str > 0 then
|
jbe@164
|
560 if content_length then
|
jbe@164
|
561 local bytes_to_send = #str
|
jbe@164
|
562 if bytes_sent + bytes_to_send > content_length then
|
jbe@164
|
563 error("Content length exceeded")
|
jbe@164
|
564 else
|
jbe@164
|
565 send(str)
|
jbe@164
|
566 bytes_sent = bytes_sent + bytes_to_send
|
jbe@164
|
567 end
|
jbe@164
|
568 else
|
jbe@164
|
569 chunk_bytes = chunk_bytes + #str
|
jbe@164
|
570 chunk_parts[#chunk_parts+1] = str
|
jbe@164
|
571 end
|
jbe@164
|
572 end
|
jbe@164
|
573 end
|
jbe@164
|
574 if chunk_bytes >= output_chunk_size then
|
jbe@164
|
575 send_chunk()
|
jbe@164
|
576 end
|
jbe@164
|
577 end
|
jbe@165
|
578 -- method to flush output buffer:
|
jbe@165
|
579 function request:flush()
|
jbe@165
|
580 assert_not_faulty()
|
jbe@165
|
581 send_chunk()
|
jbe@165
|
582 send_flush()
|
jbe@165
|
583 end
|
jbe@165
|
584 -- method to finish response:
|
jbe@165
|
585 function request:finish()
|
jbe@165
|
586 assert_not_faulty()
|
jbe@165
|
587 if state == "finished" then
|
jbe@165
|
588 return
|
jbe@165
|
589 elseif state == "info_status_sent" then
|
jbe@165
|
590 error("Informational HTTP response can be finished with :finish_headers() method")
|
jbe@165
|
591 end
|
jbe@165
|
592 finish_headers(false)
|
jbe@165
|
593 if state == "headers_sent" then
|
jbe@165
|
594 if request.method ~= "HEAD" then
|
jbe@165
|
595 state = "faulty"
|
jbe@165
|
596 if content_length then
|
jbe@165
|
597 if bytes_sent ~= content_length then
|
jbe@165
|
598 error("Content length not used")
|
jbe@165
|
599 end
|
jbe@165
|
600 else
|
jbe@165
|
601 send_chunk()
|
jbe@165
|
602 send("0\r\n\r\n")
|
jbe@165
|
603 end
|
jbe@165
|
604 finish()
|
jbe@165
|
605 end
|
jbe@165
|
606 state = "finished"
|
jbe@165
|
607 elseif state ~= "finished" then
|
jbe@165
|
608 error("Unexpected internal status in HTTP engine")
|
jbe@165
|
609 end
|
jbe@165
|
610 end
|
jbe@163
|
611 -- function to report an error:
|
jbe@163
|
612 local function request_error(throw_error, status, text)
|
jbe@163
|
613 local errmsg = "Error while reading request from client. Error response: " .. status
|
jbe@163
|
614 if text then
|
jbe@163
|
615 errmsg = errmsg .. " (" .. text .. ")"
|
jbe@163
|
616 end
|
jbe@163
|
617 if
|
jbe@163
|
618 state == "init" or
|
jbe@163
|
619 state == "prepare" or
|
jbe@163
|
620 state == "no_status_sent" or
|
jbe@163
|
621 state == "info_status_sent"
|
jbe@163
|
622 then
|
jbe@163
|
623 local error_response_status, errmsg2 = pcall(function()
|
jbe@163
|
624 request:monologue()
|
jbe@163
|
625 request:send_status(status)
|
jbe@163
|
626 request:send_header("Content-Type", "text/plain")
|
jbe@163
|
627 request:send_data(status, "\n")
|
jbe@163
|
628 if text then
|
jbe@163
|
629 request:send_data("\n", text, "\n")
|
jbe@163
|
630 end
|
jbe@163
|
631 request:finish()
|
jbe@163
|
632 end)
|
jbe@163
|
633 if not error_response_status then
|
jbe@163
|
634 error("Unexpected error while sending error response: " .. errmsg2)
|
jbe@163
|
635 end
|
jbe@163
|
636 elseif state ~= "faulty" then
|
jbe@163
|
637 assert_close(socket:reset())
|
jbe@163
|
638 end
|
jbe@163
|
639 if throw_error then
|
jbe@163
|
640 error(errmsg)
|
jbe@163
|
641 else
|
jbe@163
|
642 return survive
|
jbe@163
|
643 end
|
jbe@163
|
644 end
|
jbe@160
|
645 -- wait for input:
|
jbe@160
|
646 if not poll(socket_set, nil, request_idle_timeout) then
|
jbe@163
|
647 return request_error(false, "408 Request Timeout", "Idle connection timed out")
|
jbe@38
|
648 end
|
jbe@162
|
649 until close_responded
|
jbe@0
|
650 return survive
|
jbe@0
|
651 end
|
jbe@0
|
652 end
|
jbe@0
|
653
|
jbe@0
|
654 return _M
|
jbe@0
|
655
|