webmcp

view libraries/rocketcgi/rocketcgi.lua @ 2:72860d232f32

find changesets by author, revision, files, or words in the commit message
Version 1.0.2

Fixed bug with explicit garbage collection (requests > 256kB caused an error)

Views prefixed with an underscore can't be called externally

ui.paginate now displays the last page, if the selected page number is too high.
author jbe/bsw
date Thu Dec 10 12:00:00 2009 +0100 (2009-12-10)
parents 9fdfb27f8e67
children d76a8857ba62
line source
1 #!/usr/bin/env lua
2
3 local assert = assert
4 local collectgarbage = collectgarbage
5 local error = error
6 local getfenv = getfenv
7 local getmetatable = getmetatable
8 local ipairs = ipairs
9 local next = next
10 local pairs = pairs
11 local pcall = pcall
12 local print = print
13 local rawequal = rawequal
14 local rawget = rawget
15 local rawset = rawset
16 local select = select
17 local setfenv = setfenv
18 local setmetatable = setmetatable
19 local tonumber = tonumber
20 local tostring = tostring
21 local type = type
22 local unpack = unpack
23 local xpcall = xpcall
24
25 local io = io
26 local math = math
27 local os = os
28 local string = string
29 local table = table
30
31 module(...)
32
33 data_sent = false
34
35 function add_header(...)
36 if data_sent then
37 error("Can not add header after data has been sent.", 2)
38 end
39 io.stdout:write(...)
40 io.stdout:write("\r\n")
41 end
42
43 function send_data(...)
44 if not data_sent then
45 io.stdout:write("\r\n")
46 data_sent = true
47 end
48 io.stdout:write(...)
49 end
50
51 function set_status(status)
52 add_header("Status: ", status)
53 end
54
55 function redirect(location)
56 set_status("303 See Other")
57 add_header("Location: ", location)
58 end
59
60 function set_content_type(content_type)
61 add_header("Content-Type: ", content_type)
62 end
63
64 method = os.getenv("REQUEST_METHOD") or false
65 query = os.getenv("QUERY_STRING") or false
66 cookie_data = os.getenv("HTTP_COOKIE") or false
67 post_data = io.stdin:read("*a") or false
68 post_contenttype = os.getenv("CONTENT_TYPE") or false
69 params = {}
70 get_params = {}
71 cookies = {}
72 post_params = {}
73 post_filenames = {}
74 post_types = {}
75
76 local urldecode
77 do
78 local b0 = string.byte("0")
79 local b9 = string.byte("9")
80 local bA = string.byte("A")
81 local bF = string.byte("F")
82 local ba = string.byte("a")
83 local bf = string.byte("f")
84 function urldecode(str)
85 return (
86 string.gsub(
87 string.gsub(str, "%+", " "),
88 "%%([0-9A-Fa-f][0-9A-Fa-f])",
89 function(hex)
90 local n1, n2 = string.byte(hex, 1, 2)
91 if n1 >= b0 and n1 <= b9 then n1 = n1 - b0
92 elseif n1 >= bA and n1 <= bF then n1 = n1 - bA + 10
93 elseif n1 >= ba and n1 <= bf then n1 = n1 - ba + 10
94 else return end
95 if n2 >= b0 and n2 <= b9 then n2 = n2 - b0
96 elseif n2 >= bA and n2 <= bF then n2 = n2 - bA + 10
97 elseif n2 >= ba and n2 <= bf then n2 = n2 - ba + 10
98 else return end
99 return string.char(n1 * 16 + n2)
100 end
101 )
102 )
103 end
104 end
105
106 local function proc_param(tbl, key, value)
107 if string.find(key, "%[%]$") then
108 if tbl[key] then
109 table.insert(tbl[key], value)
110 else
111 local list = { value }
112 params[key] = list
113 tbl[key] = list
114 end
115 else
116 params[key] = value
117 tbl[key] = value
118 end
119 end
120
121 local function read_urlencoded_form(tbl, data)
122 for rawkey, rawvalue in string.gmatch(data, "([^=&]*)=([^=&]*)") do
123 proc_param(tbl, urldecode(rawkey), urldecode(rawvalue))
124 end
125 end
126
127 if query then
128 read_urlencoded_form(get_params, query)
129 end
130
131 if cookie_data then
132 for rawkey, rawvalue in string.gmatch(cookie_data, "([^=; ]*)=([^=; ]*)") do
133 cookies[urldecode(rawkey)] = urldecode(rawvalue)
134 end
135 end
136
137 if post_contenttype == "application/x-www-form-urlencoded" then
138 read_urlencoded_form(post_params, post_data)
139 elseif post_contenttype then
140 local boundary = string.match(
141 post_contenttype,
142 '^multipart/form%-data[ \t]*;[ \t]*boundary="([^"]+)"'
143 ) or string.match(
144 post_contenttype,
145 '^multipart/form%-data[ \t]*;[ \t]*boundary=([^"; \t]+)'
146 )
147 if boundary then
148 local parts = {}
149 do
150 local boundary = "\r\n--" .. boundary
151 local post_data = "\r\n" .. post_data
152 local pos1, pos2 = string.find(post_data, boundary, 1, true)
153 while true do
154 local ind = string.sub(post_data, pos2 + 1, pos2 + 2)
155 if ind == "\r\n" then
156 local pos3, pos4 = string.find(post_data, boundary, pos2 + 1, true)
157 if pos3 then
158 parts[#parts + 1] = string.sub(post_data, pos2 + 3, pos3 - 1)
159 else
160 error("Illegal POST data.")
161 end
162 pos1, pos2 = pos3, pos4
163 elseif ind == "--" then
164 break
165 else
166 error("Illegal POST data.")
167 end
168 end
169 end
170 for i, part in ipairs(parts) do
171 local pos = 1
172 local name, filename, contenttype
173 while true do
174 local header
175 do
176 local oldpos = pos
177 pos = string.find(part, "\r\n", oldpos, true)
178 if not pos then
179 error("Illegal POST data.")
180 end
181 if pos == oldpos then break end
182 header = string.sub(part, oldpos, pos - 1)
183 pos = pos + 2
184 end
185 if string.find(
186 string.lower(header),
187 "^content%-disposition:[ \t]*form%-data[ \t]*;"
188 ) then
189 -- TODO: handle all cases correctly
190 name = string.match(header, ';[ \t]*name="([^"]*)"') or
191 string.match(header, ';[ \t]*name=([^"; \t]+)')
192 filename = string.match(header, ';[ \t]*filename="([^"]*)"') or
193 string.match(header, ';[ \t]*filename=([^"; \t]+)')
194 else
195 local dummy, subpos = string.find(
196 string.lower(header),
197 "^content%-type:[ \t]*"
198 )
199 if subpos then
200 contenttype = string.sub(header, subpos + 1, #header)
201 end
202 end
203 end
204 local content = string.sub(part, pos + 2, #part)
205 if not name then
206 error("Illegal POST data.")
207 end
208 proc_param(post_params, name, content)
209 post_filenames[name] = filename
210 post_types[name] = contenttype
211 end
212 end
213 end
214
215 if post_data and #post_data > 262144 then
216 post_data = nil
217 collectgarbage("collect")
218 else
219 post_data = nil
220 end

Impressum / About Us