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misc/50502: Update printenv.lua (bozohttpd lua example)
>Number: 50502
>Category: misc
>Synopsis: Update printenv.lua (bozohttpd lua example)
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: misc-bug-people
>State: open
>Class: doc-bug
>Submitter-Id: net
>Arrival-Date: Mon Dec 07 02:45:00 +0000 2015
>Originator: Travis Paul
>Release: current
>Organization:
>Environment:
>Description:
src/libexec/httpd/printenv.lua which is intended as an example for using the Lua features of bozohttpd could be updated to be a better example.
The patch below updates printenv.lua so that it works when using SSL and sends the correct headers for HTML to be rendered by a client.
>How-To-Repeat:
Attempt to use printenv.lua over SSL, or submit the example form using a web browser, the result page will not be rendered as HTML.
>Fix:
Index: printenv.lua
===================================================================
RCS file: /cvsroot/src/libexec/httpd/printenv.lua,v
retrieving revision 1.2
diff -u -r1.2 printenv.lua
--- printenv.lua 2 Jan 2014 08:21:38 -0000 1.2
+++ printenv.lua 7 Dec 2015 02:30:48 -0000
@@ -8,6 +8,10 @@
-- the same value on each invocation. You can not keep state between
-- two calls.
+-- You can test this example by running the following command:
+-- /usr/libexec/httpd -b -f -I 8080 -L test printenv.lua .
+-- and then navigate to: http://127.0.0.1:8080/test/printenv
+
local httpd = require 'httpd'
function printenv(env, headers, query)
@@ -15,12 +19,14 @@
-- we get the "environment" in the env table, the values are more
-- or less the same as the variable for a CGI program
- if count == nil then
- count = 1
- end
-
- -- output a header
- print([[
+ -- output headers using httpd.write()
+ -- httpd.write() will not append newlines
+ httpd.write("HTTP/1.1 200 Ok\r\n")
+ httpd.write("Content-Type: text/html\r\n\r\n")
+
+ -- output html using httpd.print()
+ -- you can also use print() and io.write() but they will not work with SSL
+ httpd.print([[
<html>
<head>
<title>Bozotic Lua Environment</title>
@@ -29,54 +35,58 @@
<h1>Bozotic Lua Environment</h1>
]])
- print('module version: ' .. httpd._VERSION .. '<br>')
+ httpd.print('module version: ' .. httpd._VERSION .. '<br>')
- print('<h2>Server Environment</h2>')
+ httpd.print('<h2>Server Environment</h2>')
-- print the list of "environment" variables
for k, v in pairs(env) do
- print(k .. '=' .. v .. '<br/>')
+ httpd.print(k .. '=' .. v .. '<br/>')
end
- print('<h2>Request Headers</h2>')
+ httpd.print('<h2>Request Headers</h2>')
for k, v in pairs(headers) do
- print(k .. '=' .. v .. '<br/>')
+ httpd.print(k .. '=' .. v .. '<br/>')
end
if query ~= nil then
- print('<h2>Query Variables</h2>')
+ httpd.print('<h2>Query Variables</h2>')
for k, v in pairs(query) do
- print(k .. '=' .. v .. '<br/>')
+ httpd.print(k .. '=' .. v .. '<br/>')
end
end
- print('<h2>Form Test</h2>')
+ httpd.print('<h2>Form Test</h2>')
- print([[
- <form method="POST" action="/rest/form?sender=me">
+ httpd.print([[
+ <form method="POST" action="form?sender=me">
<input type="text" name="a_value">
<input type="submit">
</form>
]])
-- output a footer
- print([[
+ httpd.print([[
</body>
</html>
]])
end
function form(env, header, query)
+
+ httpd.write("HTTP/1.1 200 Ok\r\n")
+ httpd.write("Content-Type: text/html\r\n\r\n")
+
if query ~= nil then
- print('<h2>Form Variables</h2>')
+ httpd.print('<h2>Form Variables</h2>')
if env.CONTENT_TYPE ~= nil then
- print('Content-type: ' .. env.CONTENT_TYPE .. '<br>')
+ httpd.print('Content-type: ' .. env.CONTENT_TYPE .. '<br>')
end
for k, v in pairs(query) do
- print(k .. '=' .. v .. '<br/>')
+ httpd.print(k .. '=' .. v .. '<br/>')
end
else
- print('No values')
+ httpd.print('No values')
end
end
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