mirror of
https://github.com/lammertb/libhttp.git
synced 2025-08-20 20:41:19 +03:00
75 lines
2.4 KiB
Lua
75 lines
2.4 KiB
Lua
mg.write("HTTP/1.0 200 OK\r\n")
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mg.write("Connection: close\r\n")
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mg.write("Content-Type: text/plain; charset=utf-8\r\n")
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mg.write("Cache-Control: max-age=0, must-revalidate\r\n")
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mg.write("\r\n")
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-- Read the entire body data (POST content) into "bdata" variable.
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-- Use a string builder pattern for performance reasons
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stringtab = {}
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bdata = ""
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repeat
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local add_data = mg.read()
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if add_data then
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stringtab[#stringtab+1] = add_data
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end
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until (add_data == nil);
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bdata = table.concat(stringtab)
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stringtab = nil
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-- Get the boundary string.
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bs = "--" .. ((mg.request_info.content_type):upper():match("BOUNDARY=(.*)"));
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-- The POST data has to start with the boundary string.
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-- Check this and remove the starting boundary.
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if bdata:sub(1, #bs) ~= bs then
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error "invalid format of POST data"
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end
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bdata = bdata:sub(#bs)
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-- The boundary now starts with CR LF.
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bs = "\r\n" .. bs
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-- Now loop through all the parts
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while #bdata>4 do
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-- Find the header of new part.
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part_header_end = bdata:find("\r\n\r\n", 1, true)
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-- Parse the header.
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local form_field_name, file_name
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h = bdata:sub(1, part_header_end+2)
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for key,val in h:gmatch("([^%:\r\n]*)%s*%:%s*([^\r\n]*)\r\n") do
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if key:upper() == "CONTENT-DISPOSITION" then
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form_field_name = val:match('name=%"([^%"]*)%"')
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file_name = val:match('filename=%"([^%"]*)%"')
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end
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end
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-- Remove the header from "bdata".
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bdata = bdata:sub(part_header_end+4)
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-- Find the end of the body by locating the boundary string.
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local part_body_end = bdata:find(bs, 1, true)
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-- Isolate the content, and drop it from "bdata".
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local form_field_value = bdata:sub(1,part_body_end-1)
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bdata = bdata:sub(part_body_end+#bs)
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-- Now the data (file content or field value) is isolated: We know form_field_name and form_field_value.
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-- Here the script should do something useful with the data. This example just sends it back to the client.
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if form_field_name then
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mg.write("Field name: " .. form_field_name .. "\r\n")
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end
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if file_name then
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mg.write("File name: " .. file_name .. "\r\n")
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end
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local len = #form_field_value
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if len<50 then
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mg.write("Field value: " .. form_field_value .. "\r\n")
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else
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mg.write("Field value: " .. form_field_value:sub(1, 40) .. " .. (" .. len .. " bytes)\r\n")
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end
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mg.write("\r\n")
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end
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