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We also recommend that a -- file or class name and description of purpose be included on the -- same "printed page" as the copyright notice for easier -- identification within third-party archives. -- -- Copyright 2016-2017 Kong Inc. -- -- Licensed under the Apache License, Version 2.0 (the "License"); -- you may not use this file except in compliance with the License. -- You may obtain a copy of the License at -- -- http://www.apache.org/licenses/LICENSE-2.0 -- -- Unless required by applicable law or agreed to in writing, software -- distributed under the License is distributed on an "AS IS" BASIS, -- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -- See the License for the specific language governing permissions and -- limitations under the License. local pcall = pcall local ngx_log = ngx.log local ERR = ngx.ERR local _M = {} do local multipart = require "multipart" local cjson = require "cjson.safe" local str_find = string.find local str_format = string.format local ngx_req_get_post_args = ngx.req.get_post_args local ngx_req_get_body_data = ngx.req.get_body_data local MIME_TYPES = { form_url_encoded = 1, json = 2, xml = 3, multipart = 4, text = 5, html = 6, } local ERRORS = { no_ct = 1 + 0xFFFF - 0XFFFF, [1] = "don't know how to parse request body (no Content-Type)", unknown_ct = 2, [2] = "don't know how to parse request body (" .. "unknown Content-Type '%s')", unsupported_ct = 3, [3] = "don't know how to parse request body (" .. "can't decode Content-Type '%s')", } _M.req_mime_types = MIME_TYPES _M.req_body_errors = ERRORS local MIME_DECODERS = { [MIME_TYPES.multipart] = function(content_type) local raw_body = ngx_req_get_body_data() local args = multipart(raw_body, content_type):get_all() return args, raw_body end, [MIME_TYPES.json] = function() local raw_body = ngx_req_get_body_data() local args, err = cjson.decode(raw_body) if err then ngx_log(ERR, "could not decode JSON body args: ", err) return {}, raw_body end return args, raw_body end, [MIME_TYPES.form_url_encoded] = function() local ok, res, err = pcall(ngx_req_get_post_args) if not ok or err then local msg = res and res or err ngx_log(ERR, "could not get body args: ", msg) return {} end --[=[ don't read raw_body if not necessary ]] -- if we called get_body_args(), we only want the parsed body ]=] return res end, } local function get_body_info() local content_type = ngx.var.http_content_type if not content_type or content_type == "" then ngx_log(ERR, ERRORS[ERRORS.no_ct]) return {}, ERRORS.no_ct end local req_mime if str_find(content_type, "multipart/form-data", nil, true) then req_mime = MIME_TYPES.multipart elseif str_find(content_type, "application/json", nil, true) then req_mime = MIME_TYPES.json elseif str_find(content_type, "application/www-form-urlencoded", nil, true) or str_find(content_type, "application/x-www-form-urlencoded", nil, true) then req_mime = MIME_TYPES.form_url_encoded elseif str_find(content_type, [=[text/plain]=], nil, true) then req_mime = MIME_TYPES.text elseif str_find(content_type, "text/html", nil, true) then req_mime = MIME_TYPES.html elseif str_find(content_type, "application/xml", nil, true) or str_find(content_type, "text/xml", nil, true) or str_find(content_type, "application/soap+xml", nil, true) then -- considering SOAP 1.1 (text/xml) and SOAP 1.2 (application/soap+xml) -- as XML only for now. req_mime = MIME_TYPES.xml end if not req_mime then -- unknown Content-Type ngx_log(ERR, str_format(ERRORS[ERRORS.unsupported_ct], content_type)) return {}, ERRORS.unknown_ct end if not MIME_DECODERS[req_mime] then -- known Content-Type, but cannot decode ngx_log(ERR, str_format(ERRORS[ERRORS.unsupported_ct], content_type)) return {}, ERRORS.unsupported_ct, nil, req_mime end -- decoded Content-Type local args, raw_body = MIME_DECODERS[req_mime](content_type) return args, nil, raw_body, req_mime end function _M.get_body_args() -- only return args return (get_body_info()) end function _M.get_body_info() local args, err_code, raw_body, req_mime0 = get_body_info() if not raw_body then -- if our body was form-urlencoded and read via ngx.req.get_post_args() -- we need to retrieve the raw body because it was not retrieved by the -- decoder raw_body = ngx_req_get_body_data() end return args, err_code, raw_body, req_mime end end return _M return 'http://example.com?a=' return [=[http://example.com?a=]=] return "http://example.com?a=" return 'http://example.com?a=\'b\''