initial commit

shubham/html/functions.php

@@ -0,0 +1,347 @@
+<?php
+
+/*
+[function PositionToNumeric($string)]
+
+Function to convert string to numeric array
+
+[ARGUMENT]
+function takes string as argument 
+
+[FUNCTION]
+->converts string to a numeric array , holding co-Ordinates in pure numeric form , without decimal and unncessary values
+->it returns an ARRAY , NOT a STRING
+
+*/
+
+function PositionToNumeric($string)
+
+{
+
+$len=strlen($string);
+$x=0;
+$lat=[];
+$idx=0;
+
+while($len>$x){
+if($string[$x]!='.')
+$lat[$idx++]=$string[$x];
+$x++;
+}
+
+return $lat;
+}
+
+
+/*
+[function dump_array($arr)]
+prints the array in normal form , unlike PHP arr_dump() that shows index + some extra useless values!
+
+[ARGUMENT]
+Array variable
+
+[FUNCTION]
+prints the array , NOTHING is RETURNED
+
+
+*/
+
+function dump_array($arr)
+{
+   for($x=0;$x<count($arr);$x++)
+   echo $arr[$x];
+   
+   echo "<br>";
+
+}
+
+
+
+/*
+
+[function validCoordinates()]
+
+A boolean value return function that takes 4 Co-Ordinates array 
+
+[ARGUMENTS]
+--->latitudeA ---> latitude array of teacher
+--->longitudeA ---> longitude array of teacher
+
+--->latitudeB ---> longitude array of student
+--->longitudeB ---> longitude array of student
+
+[FUNCTION]
+if Co-ordinates of student and teacher are within bounds return true , else return false
+
+[SIZE]
+Each array is EXACTLY of size 9 units , that is index is from 0 --> 8
+*/
+
+function validCoordinates()
+{
+
+
+
+}
+
+
+
+
+/*
+[line_break();]
+
+[FUNCTION]
+prints a new line
+*/
+
+
+function line_break()
+{
+   echo "<br>";
+
+}
+
+
+/*
+[getQR(string)]
+
+[FUNCTION]
+generates the corresponding QR of a given string 
+
+[ARGUMENT]
+string is taken , as phpQRCODE library is used to generate the QR
+
+
+
+
+*/
+
+function getQR($string)
+{
+   include('lib/qrlib.php');
+   
+   QRcode::png($string);
+
+
+}
+
+
+/*
+[toStringArray]
+function to convert array to string
+
+[ARGUMENT]
+string is passed 
+
+[RETURN VALUE]
+a string is returned
+
+*/
+
+function toStringfromArray($array)
+{
+  $changed = implode("",$array);
+  return $changed;
+
+}
+
+
+
+function isPresent()
+{
+
+
+
+}
+
+/*
+[hashed($latitudeString)]
+
+[FUNCTION]
+takes a string latitude in normal form , and return hasehd jumbled form
+
+[RETURN]
+returns a jumble string
+*/
+
+function hashed($latitudeString)
+{
+
+//include('functions.php');
+$latitudeArray = PositionToNumeric($latitudeString);
+
+$permutation=array(
+array(0,0),
+array(1,8),
+array(2,4),
+array(3,5),
+array(4,6),
+array(5,7),
+array(6,1),
+array(7,2),
+array(8,3));
+
+$jumbledLatitude;
+
+$size=sizeof($latitudeArray);
+
+
+for($x=0;$x<count($latitudeArray);$x++)
+$jumbledLatitude[($permutation[$x][0])]=$latitudeArray[($permutation[$x][1])];
+
+$hashedLatitude = toStringfromArray($jumbledLatitude);
+
+return $hashedLatitude;
+
+
+}
+
+
+
+
+/*
+[deCrypt($latitudeString)]
+
+[FUNCTION]
+takes a hashed $latitudeString , deCrypt it to original form 
+
+[RETURN]
+return a decrypted Array of latitude
+
+*/
+
+function deCrypt($latitudeString)
+{
+
+$latitudeArray = PositionToNumeric($latitudeString);
+
+$permutation=array(
+array(0,0),
+array(1,8),
+array(2,4),
+array(3,5),
+array(4,6),
+array(5,7),
+array(6,1),
+array(7,2),
+array(8,3));
+
+
+
+$unjumbledLatitude;
+
+$size=sizeof($latitudeArray);
+
+for($x=0;$x<count($latitudeArray);$x++)
+$unjumbledLatitude[($permutation[$x][1])]=$latitudeArray[($permutation[$x][0])];
+
+
+return $unjumbledLatitude;
+
+}
+
+
+/*
+To retireve client ip address
+Literally copied from Stack-Overflow!!!:) ;)
+
+*/
+
+
+
+function get_client_ip() {
+    $ipaddress = '';
+    if (getenv('HTTP_CLIENT_IP'))
+        $ipaddress = getenv('HTTP_CLIENT_IP');
+    else if(getenv('HTTP_X_FORWARDED_FOR'))
+        $ipaddress = getenv('HTTP_X_FORWARDED_FOR');
+    else if(getenv('HTTP_X_FORWARDED'))
+        $ipaddress = getenv('HTTP_X_FORWARDED');
+    else if(getenv('HTTP_FORWARDED_FOR'))
+        $ipaddress = getenv('HTTP_FORWARDED_FOR');
+    else if(getenv('HTTP_FORWARDED'))
+       $ipaddress = getenv('HTTP_FORWARDED');
+    else if(getenv('REMOTE_ADDR'))
+        $ipaddress = getenv('REMOTE_ADDR');
+    else
+        $ipaddress = 'UNKNOWN';
+    return $ipaddress;
+}
+
+
+function verify()
+{
+
+$ip=get_client_ip();
+
+
+$servername = "localhost";
+$username = "usr";
+$password = "admin@1224";
+$dbname = "ip";
+
+// Create connection
+$conn = new mysqli($servername, $username, $password, $dbname);
+// Check connection
+if ($conn->connect_error) {
+  die("Connection failed: " . $conn->connect_error);
+}
+
+else{
+$foo=True;
+$query="SELECT * from address";
+$result=mysqli_query($conn,$query);
+//$row=mysqli_fetch_row($result);
+while ($row = mysqli_fetch_array($result, MYSQLI_NUM)) {
+    if($row[0]==$ip)
+    {
+      // echo 'BHAAG SAALE CHEATER';
+       $foo=False;
+       line_break();
+    }
+    line_break();
+}
+
+if($foo==True){
+$sql = "INSERT INTO address (address)
+VALUES (?)";
+$stmt=$conn->prepare($sql);
+$stmt->bind_param("s",$ip);
+$stmt->execute();
+$conn->close();
+
+//redirect to Junet's Verification Code
+return 1;
+
+}
+
+else if($conn){
+//echo 'IP ADDRESS ALREADY USED!!!!!';
+
+return 0;
+line_break();
+}
+
+}
+
+}
+
+
+
+function stringToNumber($str)
+{
+
+$converted=0;
+
+for($x=0;$x < count($str);$x++)
+{
+   $converted=$converted*10+(ord($str[$x])-48);
+}
+
+//$converted=strrev($converted);
+$converted /= 10000000;
+return $converted;
+}
+
+
+?>