WaSh
Revision as of 11:25, 6 August 2010 by Andrewufrank (talk | contribs)
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Random Jottings on WASH
Remember all programs must be precompiled with wash2hs before compilation with ghc (there may be some tools to automate this; where?). The executable produced by ghc can be moved to cgi-bin and accessed by the browser with http://localhost/cgi-bin/executableName.
Hello world programme
from draft user manual, tweaked to work with version 2.10 of 20061206
module Main where
import WASH.CGI.CGI hiding (div, head, map, span)
main =
run mainCGI
mainCGI =
ask <html>
<head><title>Hello World</title></head>
<body>
<h1>Hello World</h1>
</body>
</html>
Compile with ghc -pgmF wash2hs -package WashNGo --make Main
.
SELinux
To run ghc-compiled WASH CGI on Fedora (Core 6) you need to build an SELinux policy that allows CGI scripts to execute memory (because ghc runtime system execs mem).
cat <<EOF > local.te module local 1.0; require { class process execmem; type httpd_sys_script_t; role system_r; }; allow httpd_sys_script_t self:process execmem; EOF checkmodule -M -m -o local.mod local.te semodule_package -o local.pp -m local.mod su -c 'semodule -i local.pp'