image as a script output

 
Post new topic   Reply to topic    Aprelium Forum Index -> FastCGI/CGI
View previous topic :: View next topic  
Author Message
lazna
-


Joined: 16 Aug 2015
Posts: 32

PostPosted: Wed Aug 26, 2015 11:19 am    Post subject: image as a script output Reply with quote

Writing web monitoring to monitor network boxes in windows shell used as CGI. CGI script call pinger.cmd which ping box with given IP address, create status picture and sent it into stdout. It does work if script is started on shell console (flush few lines of messed characters, content of 3kb picture) but no picture is displayed if such script was called from CGI wrapper. See here:

http://monitor.protonet.cz/updown/updown_ng/updown_ng.cmd

Older version of CGI warepper calling similar Perl script ( http://www.steveshipway.org/software/f_updown.html ) which work fine but quite slow. See here:

http://monitor.protonet.cz/updown/

Where could be problem with no picture display? Pinger uses convert.exe from Imagemagick package as a picture generator, instead of "imagename.png" using "png:-" to send image into stdout instead of save it to file.

CGI code:


==================================================================
@echo off
echo Content-Type: text/html
echo.
REM echo ^<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"^>
echo ^<HTML^>
echo ^<HEAD^>
echo ^<meta http-equiv="Content-Type" content="text/html; charset=utf-8"^>
REM echo ^<link rel="icon" href="pictures\favicon.png"^>
echo ^<title^>
echo Přehled nodů
echo ^</title^>
echo ^</head^>
echo ^<body^>
REM == START Define imagemap
REM echo ^<map name="default"^>
REM echo ^<area shape="rect" coords="0,0,120,20" href="hostname.htm" alt="Hostname"^>
REM echo ^<area shape="rect" coords="120,0,160,20" href="latency.htm" alt="Latency"^>
REM echo ^<area shape="rect" coords="0,20,160,40" href="ipaddr.htm" alt="IP address"^>
REM echo ^</map^>
REM == END define imagemap
echo ^<h1^>^<center^>Rychlę přehled dostupnosti nodů - VERZE 2^</center^>^</h1^>
echo ^<table^>
echo ^<tr^>
setlocal ENABLEDELAYEDEXPANSION
for /f "tokens=1,2 delims=|" %%a in ('..\..\monitoring\utilities\sqlite3.exe ..\..\monitoring\db\boxes.db "SELECT ip_addr,devname FROM boxes"; ^| sort') do (
set /a counter=!counter!+1
if "!counter!"=="7" (
echo ^</tr^>
echo ^<tr^>
echo ^<td^>
echo ^<img src="http://monitor.protonet.cz/updown/updown_ng/pinger.cmd?host=%%a" alt="%%a"^>
echo ^</td^>
set counter=0
) else (
echo ^<td^>
echo ^<img src="http://monitor.protonet.cz/updown/updown_ng/pinger.cmd?host=%%a" alt="%%a"^>
echo ^</td^>
)
)
endlocal
echo ^</tr^>
echo ^</table^>
echo ^</body^>
echo ^</html^>
=====================================================================================
Back to top View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    Aprelium Forum Index -> FastCGI/CGI All times are GMT + 1 Hour
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB phpBB Group