# Ngx.req.get\_post\_args Issue **URL:** \ **Category:** NGINX\ **Created:** [November 5, 2011, 5:05pm UTC](https://www.ruby-forum.com/t/ngx-req-get-post-args-issue/213574 "2011-11-05T17:05:31Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![dubstep](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/cdc98d/32.png) [@dubstep](https://www.ruby-forum.com/u/dubstep)\ **Post date:** [November 5, 2011, 5:05pm UTC](https://www.ruby-forum.com/t/ngx-req-get-post-args-issue/213574/1 "2011-11-05T17:05:31Z")
-\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* START -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* if ngx.var.request\_method == “POST” then ngx.req.read\_body() local post\_args = ngx.req.get\_post\_args() for my\_key, v in pairs( post\_args ) do if type(v) == “table” then my\_arg = table.concat(v, " ") else my\_arg = v end regex\_rules.log\_alert("Alert:- " … my\_key … " ::: " … my\_arg) end end -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* END -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* The code in ngx\_lua below which should log key/value pairs from a post request results in the log output below: -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* START -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* [alert] 17670#0: \*1 Alert:- app\_form[localServerPath] ::: /home/user/testsite.com/public\_html/share/data/505 /home/user/testsite.com/public\_html/share/data/505, client: 89.148.6.249, server: [testsite.com](http://testsite.com), request: “POST // HTTP/1.1”, host: “[testsite.com](http://testsite.com)”, referrer: “[http://testsite.com/?app\_view=core.ItemAdmin&app\_subView=core.ItemAdd&app\_addPlugin=ItemAddFromServer&app\_form[localServerPath]=/home/user/testsite.com/public\_html/share/data/505&app\_itemId=470&app\_form[action][findFilesFromLocalServer]=1&app\_form[formName]=ItemAddFromServer](http://testsite.com/?app_view=core.ItemAdmin&app_subView=core.ItemAdd&app_addPlugin=ItemAddFromServer&app_form%5BlocalServerPath%5D=/home/user/testsite.com/public_html/share/data/505&app_itemId=470&app_form%5Baction%5D%5BfindFilesFromLocalServer%5D=1&app_form%5BformName%5D=ItemAddFromServer)” [alert] 17670#0: \*1 Alert:- app\_form[formName] ::: ItemAddFromServer ItemAddFromServer, client: 89.148.6.249, server: [testsite.com](http://testsite.com), request: “POST // HTTP/1.1”, host: “[testsite.com](http://testsite.com)”, referrer: “[http://testsite.com/?app\_view=core.ItemAdmin&app\_subView=core.ItemAdd&app\_addPlugin=ItemAddFromServer&app\_form[localServerPath]=/home/user/testsite.com/public\_html/share/data/505&app\_itemId=470&app\_form[action][findFilesFromLocalServer]=1&app\_form[formName]=ItemAddFromServer](http://testsite.com/?app_view=core.ItemAdmin&app_subView=core.ItemAdd&app_addPlugin=ItemAddFromServer&app_form%5BlocalServerPath%5D=/home/user/testsite.com/public_html/share/data/505&app_itemId=470&app_form%5Baction%5D%5BfindFilesFromLocalServer%5D=1&app_form%5BformName%5D=ItemAddFromServer)” [debug] 17670#0: \*1 posix\_memalign: 08A6A910:4096 @16 [alert] 17670#0: \*1 Alert:- app\_itemId ::: 470 ------WebKitFormBoundary3c6CizwarDCoyCst Content-Disposition: form-data; name=“app\_formUrl” //?app\_view=core.ItemAdmin 470 ------WebKitFormBoundary3c6CizwarDCoyCst Content-Disposition: form-data; name=“app\_authToken” 8845e98e9296 ------WebKitFormBoundary3c6CizwarDCoyCst Content-Disposition: form-data; name=“app\_controller” core.ItemAdd ------WebKitFormBoundary3c6CizwarDCoyCst Content-Disposition: form-data; name=“app\_form[formName]” ItemAddFromServer ------WebKitFormBoundary3c6CizwarDCoyCst Content-Disposition: form-data; name=“app\_itemId” 470 ------WebKitFormBoundary3c6CizwarDCoyCst Content-Disposition: form-data; name=“app\_addPlugin” ItemAddFromServer ------WebKitFormBoundary3c6CizwarDCoyCst Content-Disposition: form-data; name=“app\_form[localServerPath]” /home/user/testsite.com/public\_html/share/data/505 ------WebKitFormBoundary3c6CizwarDCoyCst Content-Disposition: form-data; name=“app\_form[set][title]” on ------WebKitFormBoundary3c6CizwarDCoyCst Content-Disposition: form-data; name=“app\_form[CreateThumbnailOption][createThumbnail]” on ------WebKitFormBoundary3c6CizwarDCoyCst Content-Disposition: form-data; name=“app\_form[action][addFromLocalServer]” Add Files ------WebKitFormBoundary3c6CizwarDCoyCst– , client: 89.148.6.249, server: [testsite.com](http://testsite.com), request: “POST // HTTP/1.1”, host: “[testsite.com](http://testsite.com)”, referrer: “[http://testsite.com/?app\_view=core.ItemAdmin&app\_subView=core.ItemAdd&app\_addPlugin=ItemAddFromServer&app\_form[localServerPath]=/home/user/testsite.com/public\_html/share/data/505&app\_itemId=470&app\_form[action][findFilesFromLocalServer]=1&app\_form[formName]=ItemAddFromServer](http://testsite.com/?app_view=core.ItemAdmin&app_subView=core.ItemAdd&app_addPlugin=ItemAddFromServer&app_form%5BlocalServerPath%5D=/home/user/testsite.com/public_html/share/data/505&app_itemId=470&app_form%5Baction%5D%5BfindFilesFromLocalServer%5D=1&app_form%5BformName%5D=ItemAddFromServer)” [alert] 17670#0: \*1 Alert:- app\_form[action][findFilesFromLocalServer] ::: 1 1, client: 89.148.6.249, server: [testsite.com](http://testsite.com), request: “POST // HTTP/1.1”, host: “[testsite.com](http://testsite.com)”, referrer: “[http://testsite.com/?app\_view=core.ItemAdmin&app\_subView=core.ItemAdd&app\_addPlugin=ItemAddFromServer&app\_form[localServerPath]=/home/user/testsite.com/public\_html/share/data/505&app\_itemId=470&app\_form[action][findFilesFromLocalServer]=1&app\_form[formName]=ItemAddFromServer](http://testsite.com/?app_view=core.ItemAdmin&app_subView=core.ItemAdd&app_addPlugin=ItemAddFromServer&app_form%5BlocalServerPath%5D=/home/user/testsite.com/public_html/share/data/505&app_itemId=470&app_form%5Baction%5D%5BfindFilesFromLocalServer%5D=1&app_form%5BformName%5D=ItemAddFromServer)” [alert] 17670#0: \*1 Alert:- ------WebKitFormBoundary3c6CizwarDCoyCst Content-Disposition: form-data; name ::: “app\_return” //?app\_view=core.ItemAdmin, client: 89.148.6.249, server: [testsite.com](http://testsite.com), request: “POST // HTTP/1.1”, host: “[testsite.com](http://testsite.com)”, referrer: “[http://testsite.com/?app\_view=core.ItemAdmin&app\_subView=core.ItemAdd&app\_addPlugin=ItemAddFromServer&app\_form[localServerPath]=/home/user/testsite.com/public\_html/share/data/505&app\_itemId=470&app\_form[action][findFilesFromLocalServer]=1&app\_form[formName]=ItemAddFromServer](http://testsite.com/?app_view=core.ItemAdmin&app_subView=core.ItemAdd&app_addPlugin=ItemAddFromServer&app_form%5BlocalServerPath%5D=/home/user/testsite.com/public_html/share/data/505&app_itemId=470&app_form%5Baction%5D%5BfindFilesFromLocalServer%5D=1&app_form%5BformName%5D=ItemAddFromServer)” [alert] 17670#0: \*1 Alert:- app\_subView ::: core.ItemAdd core.ItemAdd, client: 89.148.6.249, server: [testsite.com](http://testsite.com), request: “POST // HTTP/1.1”, host: “[testsite.com](http://testsite.com)”, referrer: “[http://testsite.com/?app\_view=core.ItemAdmin&app\_subView=core.ItemAdd&app\_addPlugin=ItemAddFromServer&app\_form[localServerPath]=/home/user/testsite.com/public\_html/share/data/505&app\_itemId=470&app\_form[action][findFilesFromLocalServer]=1&app\_form[formName]=ItemAddFromServer](http://testsite.com/?app_view=core.ItemAdmin&app_subView=core.ItemAdd&app_addPlugin=ItemAddFromServer&app_form%5BlocalServerPath%5D=/home/user/testsite.com/public_html/share/data/505&app_itemId=470&app_form%5Baction%5D%5BfindFilesFromLocalServer%5D=1&app_form%5BformName%5D=ItemAddFromServer)” [alert] 17670#0: _1 Alert:- app\_addPlugin ::: ItemAddFromServer ItemAddFromServer, client: 89.148.6.249, server: [testsite.com](http://testsite.com), request: “POST // HTTP/1.1”, host: “[testsite.com](http://testsite.com)”, referrer: “[http://testsite.com/?app\_view=core.ItemAdmin&app\_subView=core.ItemAdd&app\_addPlugin=ItemAddFromServer&app\_form[localServerPath]=/home/user/testsite.com/public\_html/share/data/505&app\_itemId=470&app\_form[action][findFilesFromLocalServer]=1&app\_form[formName]=ItemAddFromServer](http://testsite.com/?app_view=core.ItemAdmin&app_subView=core.ItemAdd&app_addPlugin=ItemAddFromServer&app_form%5BlocalServerPath%5D=/home/user/testsite.com/public_html/share/data/505&app_itemId=470&app_form%5Baction%5D%5BfindFilesFromLocalServer%5D=1&app_form%5BformName%5D=ItemAddFromServer)” -_\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* END -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* 1. The concat command suggests that when “v” is a table, the table holds the same value twice. E.G. “[alert] 17670#0: \*1 Alert:- app\_form[action][findFilesFromLocalServer] ::: 1 1,” and “[alert] 17670#0: \*1 Alert:- app\_form[localServerPath] ::: /home/user/testsite.com/public\_html/share/data/505 /home/user/testsite.com/public\_html/share/data/505,” 2. The “------WebKitFormBoundary3c6CizwarDCoyCst” lines seem to suggest the request body has been somehow attached to one of the variables “app\_itemId”. This should just have a value of 140. I have posted the form that generates this at: [http://pastebin.com/6scK6cWP](http://pastebin.com/6scK6cWP). (Pls widen page view to see properly) Thanks ---
**Author:** ![Nginx\_U](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/dec6dc/32.png) [@Nginx\_U](https://www.ruby-forum.com/u/Nginx_U)\ **Post date:** [November 6, 2011, 3:39am UTC](https://www.ruby-forum.com/t/ngx-req-get-post-args-issue/213574/2 "2011-11-06T03:39:36Z")
On Sun, Nov 6, 2011 at 12:04 AM, Nginx U. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > [alert] 17670#0: \*1 Alert:- app\_itemId ::: 470 > ------WebKitFormBoundary3c6CizwarDCoyCst > Content-Disposition: form-data; name=“app\_formUrl” > > //?app\_view=core.ItemAdmin 470 > ------WebKitFormBoundary3c6CizwarDCoyCst > Content-Disposition: form-data; name=“app\_authToken” Multipart form format is not supported in ngx.req.get\_post\_args. Only urlencoded format is supported for now. I’ll make this clear in the documentation. Regards, -agentzh ---
**Author:** ![Nginx\_U](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/dec6dc/32.png) [@Nginx\_U](https://www.ruby-forum.com/u/Nginx_U)\ **Post date:** [November 6, 2011, 8:13am UTC](https://www.ruby-forum.com/t/ngx-req-get-post-args-issue/213574/3 "2011-11-06T08:13:11Z")
On 6 November 2011 05:38, agentzh [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Multipart form format is not supported in ngx.req.get\_post\_args. Only > urlencoded format is supported for now. I’ll make this clear in the > documentation. Thanks for the clarification.. As I need to have a mix of both types, I have combined three files from the cgilua package into one module (cgilua\_module) and using this instead. Handles both multipart and urlencoded formats and outputs a table of key/pair values. (Also has “application/xml”, “text/xml”, and “text/plain” under the POST request handler. Not yet sure where these fit in and just left them in) My code (work in progress) is now -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* START -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* local ngx\_cgi = require “cgilua\_module” if ngx.var.request\_method == “POST” then ngx.req.read\_body() local post\_args = ngx\_cgi.get\_post\_args() for my\_key, v in pairs( post\_args ) do if type(v) == “table” then my\_arg = table.concat(v, " ") else my\_arg = v end regex\_rules.log\_alert("Alert:- " .. my\_key .. " ::: " .. my\_arg) end end -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* END -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Since cgilua has a permissive license, perhaps this, although in lua and not C, will be helpful in extending the coverage of ngx.req.get\_post\_args to multipart encoded forms. Cheers! ---
**Author:** ![Nginx\_U](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/dec6dc/32.png) [@Nginx\_U](https://www.ruby-forum.com/u/Nginx_U)\ **Post date:** [November 6, 2011, 11:21am UTC](https://www.ruby-forum.com/t/ngx-req-get-post-args-issue/213574/4 "2011-11-06T11:21:20Z")
On 6 November 2011 10:12, Nginx U. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > ``` > my_arg = table.concat(v, " ") > else > my_arg = v > end > regex_rules.log_alert("Alert:- " .. my_key .. " ::: " .. my_arg) > > ``` > > end > end > -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* > END > -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* UPDATED -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* START -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* if ngx.var.request\_method == “POST” then – ngx.req.read\_body() – Not needed as cgilua handles this local ngx\_cgi = require “cgilua\_module” local post\_args = ngx\_cgi.get\_post\_args() for my\_key, v in pairs( post\_args ) do if type(v) == “table” then my\_arg = table.concat(v, " ") else my\_arg = v end regex\_rules.log\_alert("Alert:- " .. my\_key .. " ::: " .. my\_arg) end end -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* END -\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*