mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 03:27:39 +00:00
1bce1ca2e0
* Remove undocumented ProgramSslCompression * Rename GetLastModified to GetAssetLastModified * Rename IsCompressed to IsAssetCompressed * Reorganize currently deprecated functions * Update sockopt documentation for clarity
350 lines
11 KiB
Lua
350 lines
11 KiB
Lua
-- redbean lua server page demo
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local function main()
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-- This is the best way to print data to the console or log file.
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Log(kLogWarn, "hello from \e[1mlua\e[0m!")
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-- This check is pedantic but might be good to have.
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if GetMethod() ~= 'GET' and GetMethod() ~= 'HEAD' then
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ServeError(405)
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SetHeader('Allow', 'GET, HEAD')
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return
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end
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-- These two lines are optional.
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-- The default behavior is to do this if you don't.
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SetStatus(200) -- Shorthand for SetStatus(200, "OK")
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SetHeader('Content-Type', 'text/html; charset=utf-8')
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-- Response data is buffered until the script finishes running.
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-- Compression is applied automatically, based on your headers.
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Write('<!doctype html>\r\n')
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Write('<title>redbean</title>\r\n')
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Write('<h1>\r\n')
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Write('<img style="vertical-align:middle" src="data:image/png;base64,\r\n')
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Write(EncodeBase64(LoadAsset('/redbean.png')))
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Write('">\r\n')
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Write('redbean lua server page demo\r\n')
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Write('</h1>\r\n')
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-- Prevent caching.
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-- We need this because we're doing things like putting the client's
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-- IP address in the response so we naturally don't want that cached
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SetHeader('Expires', FormatHttpDateTime(GetDate()))
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SetHeader('Cache-Control', 'no-cache, must-revalidate, max-age=0')
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-- GetUrl() is the resolved Request-URI (TODO: Maybe change API to return a URL object?)
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Write('<p>Thank you for visiting <code>')
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Write(GetUrl()) -- redbean encoded this value so it doesn't need html entity escaping
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Write('</code>\r\n')
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-- GetParam(NAME) is the fastest easiest way to get URL and FORM params
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-- If you want the RequestURL query params specifically in full do this
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Write('<h3>request url parameters</h3>\r\n')
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params = ParseUrl(GetUrl()).params -- like GetParams() but w/o form body
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if params and #params>0 then
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Write('<dl>\r\n')
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for i = 1,#params do
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Write('<dt>')
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Write(EscapeHtml(VisualizeControlCodes(params[i][1])))
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Write('\r\n')
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if params[i][2] then
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Write('<dd>')
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Write(EscapeHtml(VisualizeControlCodes(params[i][2])))
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Write('\r\n')
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end
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end
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Write('</dl>\r\n')
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Write("<p>Whatever you do, don't click on ")
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Write('<a href="')
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Write(EscapeHtml(EscapePath(GetPath()) .. '?magic'))
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Write('">')
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Write(EscapeHtml(VisualizeControlCodes(GetPath())))
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Write('?magic</a>\r\n')
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else
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Write('<p>\r\n')
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Write('<em>none</em><br>\r\n')
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Write('ProTip: Try <a href="')
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Write(EscapeHtml(EscapePath(GetPath()) .. '?x=hi%20there%00%C0%80&y&z&z=' .. EscapeParam('&')))
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Write('">clicking here</a>!\r\n')
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end
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-- redbean command line arguments
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-- these come *after* the c getopt server arguments
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Write('<h3>command line arguments</h3>\r\n')
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if #argv > 0 then
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Write('<ul>\r\n')
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for i = 1,#argv do
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Write('<li>')
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Write(EscapeHtml(VisualizeControlCodes(argv[i])))
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Write('\r\n')
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end
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Write('</ul>\r\n')
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else
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Write('<p><em>none</em>\r\n')
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end
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Write([[
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<h3>post request html form demo</h3>
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<form action="redbean-form.lua" method="post">
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<input type="text" id="firstname" name="firstname">
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<label for="firstname">first name</label>
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<br>
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<input type="text" id="lastname" name="lastname">
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<label for="lastname">last name</label>
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<br>
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<input type="submit" value="Submit">
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</form>
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]])
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Write([[
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<h3>xmlhttprequest request demo</h3>
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<input id="x" value="lâtìn1">
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<label for="x">X-Custom-Header</label><br>
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<button id="send">send</button><br>
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<div id="result"></div>
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<script>
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function OnSend() {
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var r = new XMLHttpRequest();
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r.onload = function() {
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document.getElementById("result").innerText = this.getResponseHeader('X-Custom-Header');
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};
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r.open('POST', 'redbean-xhr.lua');
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r.setRequestHeader('X-Custom-Header', document.getElementById('x').value);
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r.send();
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}
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document.getElementById('send').onclick = OnSend;
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</script>
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]])
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-- fast redbean apis for accessing already parsed request data
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Write('<h3>extra information</h3>\r\n')
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Write('<dl>\r\n')
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Write('<dt>GetMethod()\r\n')
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Write('<dd>')
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Write(EscapeHtml(GetMethod())) -- & and ' are legal in http methods
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Write('\r\n')
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if GetUser() then
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Write('<dt>GetUser()\r\n')
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Write('<dd>')
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Write(EscapeHtml(VisualizeControlCodes(GetUser())))
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Write('\r\n')
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end
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if GetScheme() then
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Write('<dt>GetScheme()\r\n')
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Write('<dd>')
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Write(GetScheme())
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Write('\r\n')
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end
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if GetPass() then
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Write('<dt>GetPass()\r\n')
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Write('<dd>')
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Write(EscapeHtml(VisualizeControlCodes(GetPass())))
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Write('\r\n')
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end
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Write('<dt>GetHost() <small>(from HTTP Request-URI or Host header or X-Forwarded-Host header or Berkeley Sockets)</small>\r\n')
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Write('<dd>')
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Write(EscapeHtml(VisualizeControlCodes(GetHost())))
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Write('\r\n')
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Write('<dt>GetPort() <small>(from HTTP Request-URI or Host header or X-Forwarded-Host header or Berkeley Sockets)</small>\r\n')
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Write('<dd>')
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Write(tostring(GetPort()))
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Write('\r\n')
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Write('<dt>GetPath() <small>(from HTTP Request-URI)</small>\r\n')
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Write('<dd>')
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Write(EscapeHtml(VisualizeControlCodes(GetPath())))
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Write('\r\n')
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Write('<dt>GetEffectivePath() <small>(actual path used internally to load the lua asset: routed depending on host, request path, and rewrites)</small>\r\n')
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Write('<dd>')
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Write(EscapeHtml(VisualizeControlCodes(GetEffectivePath())))
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Write('\r\n')
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if GetFragment() then
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Write('<dt>GetFragment()\r\n')
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Write('<dd>')
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Write(EscapeHtml(VisualizeControlCodes(GetFragment())))
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Write('\r\n')
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end
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Write('<dt>GetRemoteAddr() <small>(from Berkeley Sockets or X-Forwarded-For header)</small>\r\n')
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Write('<dd>')
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ip, port = GetRemoteAddr()
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Write('%s, %d' % {FormatIp(ip), port})
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if CategorizeIp(ip) then
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Write('<br>\r\n')
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Write(CategorizeIp(ip))
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end
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Write('\r\n')
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Write('<dt>GetClientAddr()\r\n')
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Write('<dd>')
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ip, port = GetClientAddr()
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Write('%s, %d' % {FormatIp(ip), port})
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if CategorizeIp(ip) then
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Write('<br>\r\n')
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Write(CategorizeIp(ip))
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end
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Write('\r\n')
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Write('<dt>GetServerIp()\r\n')
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Write('<dd>')
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ip, port = GetServerAddr()
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Write('%s, %d' % {FormatIp(ip), port})
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if CategorizeIp(ip) then
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Write('<br>\r\n')
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Write(CategorizeIp(ip))
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end
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Write('\r\n')
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Write('</dl>\r\n')
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-- redbean apis for generalized parsing and encoding
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referer = GetHeader('Referer')
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if referer then
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url = ParseUrl(referer)
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if url.scheme then
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url.scheme = string.upper(url.scheme)
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end
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Write('<h3>referer url</h3>\r\n')
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Write('<p>\r\n')
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Write(EscapeHtml(EncodeUrl(url)))
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Write('<dl>\r\n')
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if url.scheme then
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Write('<dt>scheme\r\n')
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Write('<dd>\r\n')
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Write(url.scheme)
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end
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if url.user then
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Write('<dt>user\r\n')
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Write('<dd>\r\n')
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Write(EscapeHtml(VisualizeControlCodes(url.user)))
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end
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if url.pass then
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Write('<dt>pass\r\n')
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Write('<dd>\r\n')
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Write(EscapeHtml(VisualizeControlCodes(url.pass)))
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end
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if url.host then
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Write('<dt>host\r\n')
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Write('<dd>\r\n')
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Write(EscapeHtml(VisualizeControlCodes(url.host)))
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end
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if url.port then
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Write('<dt>port\r\n')
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Write('<dd>\r\n')
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Write(EscapeHtml(VisualizeControlCodes(url.port)))
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end
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if url.path then
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Write('<dt>path\r\n')
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Write('<dd>\r\n')
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Write(EscapeHtml(VisualizeControlCodes(url.path)))
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end
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if url.params then
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Write('<dt>params\r\n')
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Write('<dd>\r\n')
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Write('<dl>\r\n')
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for i = 1,#url.params do
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Write('<dt>')
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Write(EscapeHtml(VisualizeControlCodes(url.params[i][1])))
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Write('\r\n')
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if url.params[i][2] then
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Write('<dd>')
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Write(EscapeHtml(VisualizeControlCodes(url.params[i][2])))
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Write('\r\n')
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end
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end
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Write('</dl>\r\n')
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end
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if url.fragment then
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Write('<dt>fragment\r\n')
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Write('<dd>\r\n')
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Write(EscapeHtml(VisualizeControlCodes(url.fragment)))
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end
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Write('</dl>\r\n')
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end
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Write('<h3>posix extended regular expressions</h3>\r\n')
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s = 'my ' .. FormatIp(GetRemoteAddr()) .. ' ip'
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-- traditional regular expressions
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m,a,b,c,d = re.search([[\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\)\.\([0-9]*\)]], s, re.BASIC)
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-- easy api (~10x slower because compile is O(2ⁿ) and search is O(n))
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m,a,b,c,d = re.search([[([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})]], s)
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-- proper api (especially if you put the re.compile() line in /.init.lua)
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pat = re.compile([[([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})]])
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m,a,b,c,d = pat:search(s) -- m and rest are nil if match not found
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Write('<pre>\r\n')
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Write([[pat = re.compile('([0-9]{1,3})\\.([0-9]{1,3})\\.([0-9]{1,3})\\.([0-9]{1,3})')]])
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Write('\r\nm,a,b,c,d = pat:search(%q)\r\n' % {s})
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Write('</pre>\r\n')
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Write('<dl>\r\n')
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Write('<dt>m\r\n')
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Write('<dd>')
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Write("%q" % {m})
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Write('\r\n')
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Write('<dt>a\r\n')
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Write('<dd>')
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Write("%q" % {a})
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Write('\r\n')
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Write('<dt>b\r\n')
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Write('<dd>')
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Write("%q" % {b})
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Write('\r\n')
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Write('<dt>c\r\n')
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Write('<dd>')
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Write("%q" % {c})
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Write('\r\n')
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Write('<dt>d\r\n')
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Write('<dd>')
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Write("%q" % {d})
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Write('\r\n')
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Write('</dl>\r\n')
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Write('<h3>source code to this page</h3>\r\n')
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Write('<pre>\r\n')
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Write(EscapeHtml(LoadAsset(GetEffectivePath())))
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Write('</pre>\r\n')
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-- redbean zip assets
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Write('<h3>zip assets</h3>\r\n')
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paths = GetZipPaths()
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if #paths > 0 then
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Write('<ul>\r\n')
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for i = 1,#paths do
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Write('<li>\r\n')
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Write('<a href="')
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Write(EscapeHtml(EscapePath(paths[i])))
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Write('">')
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Write(EscapeHtml(VisualizeControlCodes(paths[i])))
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Write('</a>')
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if IsHiddenPath(paths[i]) then
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Write(' <small>[HIDDEN]</small>')
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end
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if not IsAcceptablePath(paths[i]) then
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Write(' <small>[BLOCKED]</small>')
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end
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if not IsAssetCompressed(paths[i]) then
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Write(' <small>[UNCOMPRESSED]</small>')
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end
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if (GetAssetMode(paths[i]) & 0xF000) == 0x4000 then
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Write(' <small>[DIRECTORY]</small>')
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end
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Write('<br>\r\n')
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Write('Modified: ')
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Write(FormatHttpDateTime(GetAssetLastModifiedTime(paths[i])))
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Write('<br>\r\n')
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Write('Mode: ')
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Write("0%o" % {GetAssetMode(paths[i])})
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Write('<br>\r\n')
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Write('Size: ')
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Write(tostring(GetAssetSize(paths[i])))
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Write('<br>\r\n')
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if GetComment(paths[i]) then
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Write('Comment: ')
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Write(EscapeHtml(VisualizeControlCodes(GetComment(paths[i]))))
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Write('<br>\r\n')
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end
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Write('\r\n')
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end
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Write('</ul>\r\n')
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else
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Write('<p><em>none</em>\r\n')
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end
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end
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main()
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