WaSh
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1 Random Jottings on WASH
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1.1 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.
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1.2 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'