Annotate

net/http/parser.lua @ 4856:3e3e282f20a3

portmanager: Support for per-port SSL certificates
author Matthew Wild <mwild1@gmail.com>
date Fri, 11 May 2012 21:24:43 +0100
parent 4716:6eeb142a8073
child 4866:d54999db3aa1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 local tonumber = tonumber;
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3 local assert = assert;
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4
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5 local function preprocess_path(path)
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6 if path:sub(1,1) ~= "/" then
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7 path = "/"..path;
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8 end
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9 local level = 0;
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10 for component in path:gmatch("([^/]+)/") do
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11 if component == ".." then
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12 level = level - 1;
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13 elseif component ~= "." then
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14 level = level + 1;
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15 end
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16 if level < 0 then
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17 return nil;
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18 end
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19 end
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20 return path;
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21 end
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22
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23 local httpstream = {};
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24
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25 function httpstream.new(success_cb, error_cb, parser_type, options_cb)
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26 local client = true;
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27 if not parser_type or parser_type == "server" then client = false; else assert(parser_type == "client", "Invalid parser type"); end
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28 local buf = "";
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29 local chunked;
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30 local state = nil;
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31 local packet;
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32 local len;
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33 local have_body;
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34 local error;
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35 return {
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36 feed = function(self, data)
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37 if error then return nil, "parse has failed"; end
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38 if not data then -- EOF
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39 if state and client and not len then -- reading client body until EOF
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40 packet.body = buf;
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41 success_cb(packet);
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42 elseif buf ~= "" then -- unexpected EOF
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43 error = true; return error_cb();
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44 end
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45 return;
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46 end
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47 buf = buf..data;
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48 while #buf > 0 do
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49 if state == nil then -- read request
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50 local index = buf:find("\r\n\r\n", nil, true);
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51 if not index then return; end -- not enough data
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52 local method, path, httpversion, status_code, reason_phrase;
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53 local first_line;
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54 local headers = {};
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55 for line in buf:sub(1,index+1):gmatch("([^\r\n]+)\r\n") do -- parse request
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56 if first_line then
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57 local key, val = line:match("^([^%s:]+): *(.*)$");
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58 if not key then error = true; return error_cb("invalid-header-line"); end -- TODO handle multi-line and invalid headers
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59 key = key:lower();
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60 headers[key] = headers[key] and headers[key]..","..val or val;
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61 else
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62 first_line = line;
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63 if client then
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64 httpversion, status_code, reason_phrase = line:match("^HTTP/(1%.[01]) (%d%d%d) (.*)$");
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65 if not status_code then error = true; return error_cb("invalid-status-line"); end
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66 have_body = not
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67 ( (options_cb and options_cb().method == "HEAD")
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68 or (status_code == 204 or status_code == 304 or status_code == 301)
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69 or (status_code >= 100 and status_code < 200) );
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70 chunked = have_body and headers["transfer-encoding"] == "chunked";
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71 else
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72 method, path, httpversion = line:match("^(%w+) (%S+) HTTP/(1%.[01])$");
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73 if not method then error = true; return error_cb("invalid-status-line"); end
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74 end
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75 end
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76 end
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77 len = tonumber(headers["content-length"]); -- TODO check for invalid len
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78 if client then
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79 -- FIXME handle '100 Continue' response (by skipping it)
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80 if not have_body then len = 0; end
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81 packet = {
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82 code = status_code;
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83 httpversion = httpversion;
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84 headers = headers;
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85 body = have_body and "" or nil;
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86 -- COMPAT the properties below are deprecated
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87 responseversion = httpversion;
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88 responseheaders = headers;
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89 };
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90 else
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91 -- path normalization
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92 if path:match("^https?://") then
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93 headers.host, path = path:match("^https?://([^/]*)(.*)");
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94 end
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95 path = preprocess_path(path);
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96
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97 len = len or 0;
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98 packet = {
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99 method = method;
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100 path = path;
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101 httpversion = httpversion;
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102 headers = headers;
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103 body = nil;
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104 };
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105 end
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106 buf = buf:sub(index + 4);
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107 state = true;
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108 end
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109 if state then -- read body
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110 if client then
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111 if chunked then
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112 local index = buf:find("\r\n", nil, true);
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113 if not index then return; end -- not enough data
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114 local chunk_size = buf:match("^%x+");
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115 if not chunk_size then error = true; return error_cb("invalid-chunk-size"); end
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116 chunk_size = tonumber(chunk_size, 16);
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117 index = index + 2;
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118 if chunk_size == 0 then
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119 state = nil; success_cb(packet);
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120 elseif #buf - index + 1 >= chunk_size then -- we have a chunk
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121 packet.body = packet.body..buf:sub(index, index + chunk_size - 1);
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122 buf = buf:sub(index + chunk_size);
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123 end
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124 error("trailers"); -- FIXME MUST read trailers
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125 elseif len and #buf >= len then
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126 packet.body, buf = buf:sub(1, len), buf:sub(len + 1);
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127 state = nil; success_cb(packet);
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128 end
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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129 elseif #buf >= len then
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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130 packet.body, buf = buf:sub(1, len), buf:sub(len + 1);
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131 state = nil; success_cb(packet);
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132 end
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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133 end
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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134 end
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135 end;
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136 };
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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137 end
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138
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139 return httpstream;