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<?php
/*
** Class for connecting and manage the mysql database
*/
require_once("constants.php");
require_once("utils.php");
class DBController{
private $link;
public function __construct(){
mb_internal_encoding("UTF-8");
mb_regex_encoding("UTF-8");
$this->link = mysqli_connect(DB_SERVER, DB_USER, DB_PASS,DB_NAME);
if (mysqli_connect_errno()) {
exit();
}
}
public function __destruct() {
$this->disconnect();
}
/*
* checks if user with email "$username" and password "$password" exists
* */
public function confirmUserPass($username, $password){
$username = mysqli_real_escape_string($this->link,$username);
/* Verify that user is in database */
$q = "SELECT password FROM users WHERE email = '$username'";
$results = mysqli_query($this->link,$q);
if(!$results || (mysqli_num_rows($results) < 1)){
mysqli_free_result($results);
return -1; //Indicates username failure
}
$dbarray = mysqli_fetch_array($results,MYSQLI_ASSOC);
$dbarray['password'] = stripslashes($dbarray['password']);
$password = stripslashes($password);
mysqli_free_result($results);
if($password == $dbarray['password']){
return 1; //Success, Username and password confirmed
}
else{
return -2; //Indicates password failure
}
}
/**
* confirmUserID - Checks whether or not the given
* username is in the database, if so it checks if the
* given userid is the same userid in the database
* for that user. If the user doesn't exist or if the
* userids don't match up, it returns an error code
*/
public function confirmUserID($username, $userid){
$username = mysqli_real_escape_string($this->link,$username);
/* Verify that user is in database */
$q = "SELECT usr_userid FROM users WHERE pk_user = '$username'";
$results = mysqli_query($this->link,$q);
if(!$results || (mysqli_num_rows($results) < 1)){
mysqli_free_result($results);
return -1; //Indicates username failure
}
/* Retrieve userid from result, strip slashes */
$dbarray = mysqli_fetch_array($results,MYSQLI_ASSOC);
$dbarray['usr_userid'] = stripslashes($dbarray['usr_userid']);
$userid = stripslashes($userid);
mysqli_free_result($results);
/* Validate that userid is correct */
if($userid == $dbarray['usr_userid']){
return 1; //Success! Username and userid confirmed
}
else{
return -2; //Indicates userid invalid
}
}
/*
* dbemailTaken - Returns true if the email has
* been taken by another user, false otherwise.
*/
public function dbemailTaken($email){
$email = mysqli_real_escape_string($this->link,$email);
$q = "SELECT email FROM users WHERE email = '$email'";
$results = mysqli_query($this->link,$q);
$numr = mysqli_num_rows($results);
mysqli_free_result($results);
return ($numr > 0);
}
/*
** registers a user in the system, and returns user key if successfull
*/
public function dbregister($email, $pass, $flname, $hash, $country_code){
$email = mysqli_real_escape_string($this->link,$email);
$pass = mysqli_real_escape_string($this->link,$pass);
$flname = mysqli_real_escape_string($this->link,$flname);
$country_code = mysqli_real_escape_string($this->link,$country_code);
$ip = getRealIpAddr();
//############### INSERTION ###############
mysqli_autocommit($this->link,FALSE);
mysqli_query($this->link,"SET NAMES 'utf8'");
$q = "insert into users(pk_user,email,flname,password,usr_confirm_hash,country_code,usr_ip) values('NULL','$email','$flname','$pass','$hash','$country_code','$ip')";
mysqli_query($this->link,$q);
if(mysqli_errno($this->link)){
mysqli_rollback($this->link);
return -1;
}
else{
mysqli_commit($this->link);
$result = mysqli_query($this->link,'SELECT LAST_INSERT_ID() as lid');
$obj = $result->fetch_object();
$lastinsertedid = $obj->lid;
$result->close();
unset($obj);
return $lastinsertedid;
}
return -1;
}
/*
* checks if user with email "$email" did already the confirmation of the account
* */
public function is_confirmed($username){
$q = "SELECT usr_is_confirmed FROM users WHERE email = '$username'";
$results = mysqli_query($this->link,$q);
$dbarray = mysqli_fetch_array($results,MYSQLI_ASSOC);
$is_confirmed = $dbarray['usr_is_confirmed'];
mysqli_free_result($results);
if($is_confirmed == 1){
return 1; //Success!
}
else{
return -1; //Indicates failure
}
}
/*
* checks if user with email "$email" is blocked
* */
public function is_blocked($username){
$q = "SELECT usr_is_blocked FROM users WHERE email = '$username'";
$results = mysqli_query($this->link,$q);
$dbarray = mysqli_fetch_array($results,MYSQLI_ASSOC);
$usr_is_blocked = $dbarray['usr_is_blocked'];
mysqli_free_result($results);
if($usr_is_blocked == 1){
return 1; //blocked
}
else{
return -1; //Indicates failure
}
}
/*
* checks if the resethash is associated with the email in the users table
*/
public function dbconfirmResetPasswordHash($email,$hash){
$email = mysqli_real_escape_string($this->link,$email);
$q = "SELECT pk_user FROM users WHERE email = '$email' and usr_resetpassword_hash = '$hash'";
$results = mysqli_query($this->link,$q);
$numr = mysqli_num_rows($results);
mysqli_free_result($results);
if($numr > 0)
return 1;
else
return -1;
}
/**
* updateUserField - Updates a field, specified by the field
* parameter, in the user's row of the database, given the pk_user
*/
public function updateUserField($userkey, $field, $value){
$q = "UPDATE users SET ".$field." = '$value' WHERE pk_user = '$userkey'";
mysqli_query($this->link,$q);
if(mysqli_errno($this->link)){
return -1;
}
return 1;
}
/**
* deleteUser - Deletes a User
*/
public function deleteUser($userkey){
$q = "DELETE from users WHERE pk_user = '$userkey'";
mysqli_query($this->link,$q);
if(mysqli_errno($this->link)){
return -1;
}
return 1;
}
/**
* updateUserFieldEmail - Updates a field, in the user's row of the database, given the email
*/
public function updateUserFieldEmail($email, $field, $value){
$email = mysqli_real_escape_string($this->link,$email);
$q = "UPDATE users SET ".$field." = '$value' WHERE email = '$email'";
return mysqli_query($this->link,$q);
}
/**
* dbgetUserInfo - Returns the result array from a mysql
* query asking for some data regarding
* the given username(email). If query fails, NULL is returned.
*/
public function dbgetUserInfoEmail($email){
$email = mysqli_real_escape_string($this->link,$email);
$q = "SELECT pk_user,email,usr_userid FROM users WHERE email = '$email'";
$results = mysqli_query($this->link,$q);
/* Error occurred, return given name by default */
if(!$results || (mysqli_num_rows($results) < 1)){
mysqli_free_result($results);
return NULL;
}
/* Return result array */
$dbarray = mysqli_fetch_array($results,MYSQLI_ASSOC);
mysqli_free_result($results);
return $dbarray;
}
/**
* dbgetUserInfo - Returns the result array from a mysql
* query asking for some data regarding
* the given username(pk_user). If query fails, NULL is returned.
*/
public function dbgetUserInfo($username){
$username = mysqli_real_escape_string($this->link,$username);
$q = "SELECT pk_user,email,usr_userid FROM users WHERE pk_user = '$username'";
$results = mysqli_query($this->link,$q);
/* Error occurred, return given name by default */
if(!$results || (mysqli_num_rows($results) < 1)){
mysqli_free_result($results);
return NULL;
}
/* Return result array */
$dbarray = mysqli_fetch_array($results,MYSQLI_ASSOC);
mysqli_free_result($results);
return $dbarray;
}
/**
* dbgetUserAccountDetails - Returns the result array from a mysql
* query asking for some data regarding
* the given username(email). If query fails, NULL is returned.
*/
public function dbgetUserAccountDetails($userkey){
$q = "SELECT U.*,C.country_name FROM users U,Country C WHERE U.pk_user = '$userkey' AND C.country_code = U.country_code";
$results = mysqli_query($this->link,$q);
/* Error occurred, return given name by default */
if(!$results || (mysqli_num_rows($results) < 1)){
mysqli_free_result($results);
return NULL;
}
/* Return result array */
$dbarray = mysqli_fetch_array($results,MYSQLI_ASSOC);
mysqli_free_result($results);
return $dbarray;
}
public function user_confirm($urlemail,$urlhash) {
$new_hash = sha1($urlemail.supersecret_hash_padding);
if ($new_hash && ($new_hash == $urlhash)) {
$q = "SELECT email FROM users WHERE usr_confirm_hash = '$new_hash'";
$results = mysqli_query($this->link,$q);
if (!$results || (mysqli_num_rows($results) < 1)) {
$feedback = 'ERROR -- Hash not found';
mysqli_free_result($results);
return $feedback;
}
else {
// Confirm the email and set account to active
$email = $urlemail;
$hash = $urlhash;
$query = "UPDATE users SET usr_is_confirmed='1' WHERE usr_confirm_hash='$hash'";
mysqli_query($this->link,$query);
return 1;
}
}
else {
$feedback = 'ERROR -- Values do not match';
return $feedback;
}
}
/*
* checks if value matches a field in the table users
*/
public function matchUserField($value,$field,$userkey){
$value = mysqli_real_escape_string($this->link,$value);
$q = "SELECT pk_user FROM users WHERE ".$field." = '$value' and pk_user = '$userkey'";
$results = mysqli_query($this->link,$q);
$numr = mysqli_num_rows($results);
mysqli_free_result($results);
return ($numr > 0);
}
/*
** changes the user account details, and returns 1 successfull
*/
public function dbeditaccount($email, $flname, $country_code, $pass, $userkey){
$email = mysqli_real_escape_string($this->link,$email);
$pass = mysqli_real_escape_string($this->link,$pass);
$flname = mysqli_real_escape_string($this->link,$flname);
$country_code = mysqli_real_escape_string($this->link,$country_code);
//############### UPDATE ###############
mysqli_autocommit($this->link,FALSE);
mysqli_query($this->link,"SET NAMES 'utf8'");
$q="";
if($pass)
$q = "UPDATE users SET email='$email',flname='$flname',password='$pass',country_code='$country_code' where pk_user = '$userkey'";
else
$q = "UPDATE users SET email='$email',flname='$flname',country_code='$country_code' where pk_user = '$userkey'";
mysqli_query($this->link,$q);
if(mysqli_errno($this->link)){
mysqli_rollback($this->link);
return -1;
}
else{
mysqli_commit($this->link);
return 1;
}
return -1;
}
/*
* checks if a country typed by the user exists in the table country. Returns the id of the country, or null
*/
public function dbexistsCountry($country_name){
$country_name_lower = mb_strtolower(html_entity_decode($country_name,ENT_NOQUOTES, 'UTF-8'));
$q = "SELECT country_code FROM Country WHERE LOWER(country_name) = '$country_name_lower'";
$results = mysqli_query($this->link,$q);
if(!$results || (mysqli_num_rows($results) < 1)){
mysqli_free_result($results);
return null; //Indicates country check failure
}
$dbarray = mysqli_fetch_array($results,MYSQLI_ASSOC);
$dbarray['country_code'] = stripslashes($dbarray['country_code']);
mysqli_free_result($results);
return $dbarray['country_code'];
}
/**
* Increments the number of logins of a user
**/
public function incrementLogins($userkey){
$q = "SELECT usr_nmb_logins FROM users WHERE pk_user = '$userkey'";
$results = mysqli_query($this->link,$q);
if(!$results || (mysqli_num_rows($results) < 1)){
mysqli_free_result($results);
return -1;
}
else{
$dbarray = mysqli_fetch_array($results,MYSQLI_ASSOC);
$nmb_logins = $dbarray['usr_nmb_logins'];
$nmb_logins_inc = $nmb_logins + 1 ;
mysqli_free_result($results);
mysqli_autocommit($this->link,FALSE);
$qu = "update users set usr_nmb_logins = '$nmb_logins_inc' WHERE pk_user = '$userkey'";
mysqli_query($this->link,$qu);
if(mysqli_errno($this->link)){
mysqli_rollback($this->link);
return -2;//Indicates error updating row
}
else{
mysqli_commit($this->link);
return 1;
}
}
return -3;
}
/*
* returns the array with the users per country info
* note: it just includes the users that have their accounts confirmed!
* It does not includes the user viewing this (admin)
* */
public function getUsersPerCountry($userkey){
$q = "SELECT COUNT(*) AS value,users.country_code,country_name FROM users INNER JOIN Country ON Country.country_code = users.country_code WHERE usr_is_confirmed=1 and pk_user <> '$userkey' GROUP BY users.country_code";
$results = mysqli_query($this->link,$q);
/* Error occurred, return given name by default */
if(!$results || (mysqli_num_rows($results) < 1)){
mysqli_free_result($results);
return NULL;
}
/* Return result array */
$aResults = array();
while ($row = $results->fetch_assoc()) {
$aResults[] = array( "country_name"=>$row['country_name'] ,"value"=>$row['value']);
}
mysqli_free_result($results);
return $aResults;
}
/*
* returns the array with the users data
* */
public function getUsersData($userkey){
mysqli_query($this->link,"SET NAMES 'utf8'");
$q = "SELECT pk_user,country_name,email,flname,usr_ip,usr_nmb_logins,usr_signup_date,usr_is_blocked,usr_is_admin FROM users INNER JOIN Country ON Country.country_code=users.country_code WHERE usr_is_confirmed=1 and pk_user <> '$userkey'";
$results = mysqli_query($this->link,$q);
/* Error occurred, return given name by default */
if(!$results || (mysqli_num_rows($results) < 1)){
mysqli_free_result($results);
return NULL;
}
/* Return result array */
$aResults = array();
while ($row = $results->fetch_assoc()) {
$aResults[] = array( "pk_user"=>$row['pk_user'] ,"country_name"=>$row['country_name'] ,"email"=>$row['email'],"flname"=>$row['flname'],"usr_ip"=>$row['usr_ip'],"usr_nmb_logins"=>$row['usr_nmb_logins'],"usr_signup_date"=>$row['usr_signup_date'],"usr_is_blocked"=>$row['usr_is_blocked'],"usr_is_admin"=>$row['usr_is_admin']);
}
mysqli_free_result($results);
return $aResults;
}
/**
* query - Performs the given query on the database and
* returns the result, which may be false, true or a
* resource identifier.
*/
public function query($query){
return mysqli_query($this->link,$query);
}
public function disconnect(){
mysqli_close($this->link);
}
};
?> |
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