<?php
// width+height+range = 1900*1900*8999 = 3245390000 cache keys
// 3245390000 * 200kB = 604TB - saturates redis storage.
// However, redis should be configured with maxmemory directive and
// volatile-lru, which evicts least recently used key that's
// going to to expire anyway.
require_once "../lib/redis.php";
$filename = "../upload/sauna.rrd";
http_send_content_type("image/png");
$width = 500;
$height = 300;
$range = 6;
$mode = "normal";
$modes = array("raw" => '"LINE1:temperature#C00000" ', "derivate" => '"CDEF:prev1=PREV(temperature)" ' . '"CDEF:time=temperature,POP,TIME" ' . '"CDEF:prevtime=PREV(time)" ' . '"CDEF:derivate=temperature,prev1,-,time,prevtime,-,/" ' . '"CDEF:smoothed=derivate,1800,TREND" ' . '"LINE1:smoothed#000077" ', "normal" => '"CDEF:trendtemp=temperature,900,TREND" ' . '"CDEF:trend=trendtemp,20,110,LIMIT" ' . '"CDEF:linehot=trend,64,110,LIMIT" ' . '"CDEF:linewarm=trend,39,65,LIMIT" ' . '"CDEF:linecold=trend,0,40,LIMIT" ' . '"CDEF:comp1=PREV(trend)" ' . '"CDEF:comp2=PREV(comp1)" ' . '"CDEF:comp3=PREV(comp2)" ' . '"CDEF:slope=comp3,trend,LT" ' . '"CDEF:down=slope,UNKN,trend,IF,40,110,LIMIT" ' . '"CDEF:up=slope,trend,UNKN,IF,40,110,LIMIT" ' . '"AREA:up#7700001D" ' . '"AREA:down#0000771D" ' . '"LINE1:linehot#7700008F" ' . '"LINE1:linewarm#0077008F" ' . '"LINE1:linecold#0000778F" ');
$modestring = $modes[$mode];
if (isset($_GET["width"])) {
$width = min(2000, max(100, intval($_GET["width"])));
}
if (isset($_GET["height"])) {
$height = min(2000, max(100, intval($_GET["height"])));
}
if (isset($_GET["range"])) {
$range = min(9000, max(1, intval($_GET["range"])));
}
$tz = "EEST";
if (isset($_GET["tz"])) {
$tz = substr($_GET["tz"], 0, 4);
}
$tz = timezone_name_from_abbr($tz);
if ($tz === FALSE) {
/**
* Send the response headers and body.
* @return void
*/
public function send()
{
// don't send more than once
if (static::$sent) {
return;
}
// (maybe) start output buffering
if (2 > ob_get_level()) {
#if (! $this->gzip_body || ! ob_start('ob_gzhandler'))
ob_start();
}
// send at least some cache header
if (!isset($this->headers['Cache-Control'])) {
$this->nocache();
}
// send Status header
if (!isset($this->status)) {
if (isset($GLOBALS['HTTP_RESPONSE_CODE'])) {
$this->status = $GLOBALS['HTTP_RESPONSE_CODE'];
} else {
if (isset($this->headers['Location'])) {
$this->status = 302;
} else {
$this->status = 200;
}
}
}
http_send_status($this->status);
// send Content-Type header
if (!isset($this->content_type)) {
$this->content_type = static::DEFAULT_CONTENT_TYPE;
}
http_send_content_type($this->content_type, $this->getCharset());
// send other headers
foreach ($this->headers as $name => $value) {
header(sprintf("%s: %s", $name, $value), true);
}
// output the body
if ($this->send_body) {
echo $this->body;
ob_end_flush();
}
static::$sent = true;
exit;
}
}
function process_json($filename, $last_data)
{
// Return data array or false if not available.
global $redis;
$timestamp = $redis->get($filename . "-mtime");
if ($timestamp === FALSE) {
$timestamp = 0;
}
$ret = array("file_timestamp" => $timestamp, "content_timestamp" => false, "content" => false);
$ret["content"] = json_decode($redis->get($filename), true);
if (isset($ret["content"]["timestamp"])) {
$ret["content_timestamp"] = $ret["content"]["timestamp"];
} else {
$ret["content_timestamp"] = $ret["file_timestamp"];
}
if ($ret["content_timestamp"] < $last_data || $ret["file_timestamp"] < $last_data) {
return false;
}
return $ret;
}
// Populate data
$ret["twitter"] = process_json("data:twitter.json", $last_data);
$ret["data"] = process_json($filename, $last_data);
$ret["status"] = "success";
http_cache_etag();
http_send_content_type("application/json");
http_send_data(json_encode($ret));
// Update statistics
$redis->incr("stats:web:json:processed");
stat_update("web:json:processed");
if (isset($_GET["filename"])) {
$useragent = $_SERVER['HTTP_USER_AGENT'];
if (preg_match('/android.+mobile|avantgo|bada\\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\\/|plucker|pocket|psp|symbian|treo|up\\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i', $useragent) || preg_match('/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\\-(n|u)|c55\\/|capi|ccwa|cdm\\-|cell|chtm|cldc|cmd\\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\\-s|devi|dica|dmob|do(c|p)o|ds(12|\\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\\-|_)|g1 u|g560|gene|gf\\-5|g\\-mo|go(\\.w|od)|gr(ad|un)|haie|hcit|hd\\-(m|p|t)|hei\\-|hi(pt|ta)|hp( i|ip)|hs\\-c|ht(c(\\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\\-(20|go|ma)|i230|iac( |\\-|\\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\\/)|klon|kpt |kwc\\-|kyo(c|k)|le(no|xi)|lg( g|\\/(k|l|u)|50|54|e\\-|e\\/|\\-[a-w])|libw|lynx|m1\\-w|m3ga|m50\\/|ma(te|ui|xo)|mc(01|21|ca)|m\\-cr|me(di|rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\\-2|po(ck|rt|se)|prox|psio|pt\\-g|qa\\-a|qc(07|12|21|32|60|\\-[2-7]|i\\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\\-|oo|p\\-)|sdk\\/|se(c(\\-|0|1)|47|mc|nd|ri)|sgh\\-|shar|sie(\\-|m)|sk\\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\\-|v\\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\\-|tdg\\-|tel(i|m)|tim\\-|t\\-mo|to(pl|sh)|ts(70|m\\-|m3|m5)|tx\\-9|up(\\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|xda(\\-|2|g)|yas\\-|your|zeto|zte\\-/i', substr($useragent, 0, 4))) {
$name = "img/carousel/mobile/" . basename($_GET["filename"]);
} else {
if (preg_match('/ipad/i', substr($useragent, 0, 4))) {
$name = "img/carousel/tablet/" . basename($_GET["filename"]);
} else {
$name = "img/carousel/full/" . basename($_GET["filename"]);
}
}
}
if (!isset($name) || !file_exists($name)) {
$redis->incr("stats:web:static:invalid");
$redis->incr("stats:web:invalid");
stat_update("web:static:invalid");
stat_update("web:invalid");
header("HTTP/1.1 404 Not Found");
readfile("404.html");
exit;
}
$lastmodified = filemtime($name);
$redis->incr("stats:web:static:served");
stat_update("web:static:served");
http_cache_last_modified();
http_cache_etag();
$expiretime = 3600 * 24 * 8;
Header("Cache-Control: public; max-age={$expiretime}");
Header("Expires: " . gmdate("D, d M Y H:i:s", $lastmodified + $expiretime) . " GMT");
http_send_content_type("image/jpeg");
http_send_file($name);
/**
* Test Http functions.
*/
function test_functions()
{
http_cache_last_modified();
http_chunked_decode();
http_deflate();
http_inflate();
http_build_cookie();
http_date();
http_get_request_body_stream();
http_get_request_body();
http_get_request_headers();
http_match_etag();
http_match_modified();
http_match_request_header();
http_support();
http_negotiate_charset();
http_negotiate_content_type();
http_negotiate_language();
ob_deflatehandler();
ob_etaghandler();
ob_inflatehandler();
http_parse_cookie();
http_parse_headers();
http_parse_message();
http_parse_params();
http_persistent_handles_clean();
http_persistent_handles_count();
http_persistent_handles_ident();
http_get();
http_head();
http_post_data();
http_post_fields();
http_put_data();
http_put_file();
http_put_stream();
http_request_body_encode();
http_request_method_exists();
http_request_method_name();
http_request_method_register();
http_request_method_unregister();
http_request();
http_redirect();
http_send_content_disposition();
http_send_content_type();
http_send_data();
http_send_file();
http_send_last_modified();
http_send_status();
http_send_stream();
http_throttle();
http_build_str();
http_build_url();
}
readfile("404.html");
exit;
}
$filename = $_GET["filename"];
$pathinfo = pathinfo($filename);
$dir = $pathinfo["dirname"];
if (!in_array($dir, array("css", "js", "img")) || !file_exists($filename)) {
error_log("staticserve.php: Invalid directory or file ({$filename}) doesn't exist");
$redis->incr("stats:web:static:invalid");
$redis->incr("stats:web:invalid");
stat_update("web:static:invalid");
stat_update("web:invalid");
header("HTTP/1.1 404 Not Found");
readfile("404.html");
exit;
}
if ($dir == "css") {
$ct = "text/css";
} elseif ($dir == "js") {
$ct = "application/javascript";
} elseif ($dir == "img") {
$finfo = finfo_open(FILEINFO_MIME_TYPE);
$ct = finfo_file($finfo, $filename);
} else {
$ct = "text/plain";
}
$redis->incr("stats:web:static:served");
stat_update("web:static:served");
http_cache_etag();
http_send_content_type($ct);
http_send_file($filename);
