mirror of
https://github.com/pierre42100/ComunicAPI
synced 2024-11-30 17:26:35 +00:00
349 lines
8.0 KiB
PHP
349 lines
8.0 KiB
PHP
<?php
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/**
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* Requests functions
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*
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* @author Pierre HUBERT
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*/
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/**
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* Check $_POST parametres associated to a request
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*
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* @param Array $varList The list of variables to check
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* @return Boolean True or false depending of the success of the operation
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*/
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function check_post_parametres(array $varList){
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//Check each fields
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foreach($varList as $process){
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//Check variable existence
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if(!isset($_POST[$process]))
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return false; //The variable does not exists
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//Check variable content
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if($_POST[$process] == "")
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return false; //The variable is empty
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}
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//If we arrive there, it is a success
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return true;
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}
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/**
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* Convert a list of numbers (anything with IDs) comma-separated to an array
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*
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* @param String $list The input list
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* @return Array The list of user / an empty list in case of errors
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*/
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function numbers_list_to_array($list) : array{
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//Split the list into an array
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$array = explode(",", $list);
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$usersList = array();
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foreach($array as $process){
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//Check the entry is valid
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if(toInt($process) < 1)
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//return array();
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continue; //Ignore entry
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//Add the entry to the list
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$usersList[toInt($process)] = toInt($process);
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}
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//Return the result
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return $usersList;
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}
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/**
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* Securely transform user given number (mixed) to integer (int)
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*
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* @param Mixed $input The input variable (mixed)
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* @return int $output The output (safe integer)
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*/
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function toInt($input) : int{
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return floor($input*1);
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}
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/**
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* Remove HTML markup codes (<, >)
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*
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* @param string $input The string to change
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* @return string The updated string
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*/
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function removeHTMLnodes(string $input) : string {
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$output = str_replace("<", "<", $input);
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return str_replace(">", ">", $output);
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}
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/**
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* Check the security of an HTML string
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*
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* @param string $input The string to check
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* @return bool TRUE if the string is safe to insert / FALSE else
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*/
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function checkHTMLstring(string $string) : bool {
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//Check for script or style or meta tag
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if(str_ireplace(array("<string", "<style", "<meta"), "", $string) != $string)
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return false;
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//Check for onclick, onkeyup, onmousehover tag
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if(str_ireplace(array("onclick", "onkeyup", "onmousehover"), "", $string) != $string)
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return false;
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//Check for images integrated to the post
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if(preg_match("/data:image/", $string))
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return false;
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//The message is valid
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return true;
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}
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/**
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* Check a string before inserting it
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*
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* @param string $string The string to check
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* @return bool True if the string is valid / false else
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*/
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function check_string_before_insert(string $string) : bool {
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//First, empty string are invalid
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if($string == "")
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return false;
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//Remove HTML tags before continuing
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$string = str_replace(array("<", ">"), "", $string);
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//Check string size
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if(strlen($string)<3)
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return false;
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//Check if the string has at least three different characters
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if(strlen(count_chars($string,3)) < 3)
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return false;
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//Success
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return true;
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}
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/**
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* Make a string safe to be used to perform a query on a database
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*
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* @param string $input The string to process
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* @return string The result string
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*/
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function safe_for_sql(string $input) : string {
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//Perform safe adapation
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$input = str_ireplace("\\", "\\\\", $input);
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$input = str_ireplace("'", "\\'", $input);
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$input = str_ireplace('"', "\\\"", $input);
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return $input;
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}
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/**
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* Check a given user ID
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*
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* @param int $userID The user ID to check
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* @return bool True if userID is valid, false else
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*/
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function check_user_id(int $userID) : bool {
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if($userID < 1)
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return false; //Invalid
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return true; //Valid
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}
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/**
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* Get userID posted in a request and return it if there
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* isn't any error
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*
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* @param string $name Optionnal, the name of the post field
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* @return int User ID
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* @throws RestError in case of error
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*/
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function getPostUserID(string $name = "userID") : int {
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//Get userID post
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if(!isset($_POST[$name]))
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Rest_fatal_error(400, "Please specify a userID in '".$name."' !");
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$userID = toInt($_POST[$name]);
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//Check userID validity
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if(!check_user_id($userID))
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Rest_fatal_error(400, "Invalid userID in '".$name."' !");
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//Check if user exits
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if(!CS::get()->components->user->exists($userID))
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Rest_fatal_error(404, "Specified user in '".$name."' not found !");
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return $userID;
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}
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/**
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* Get the ID of a conversation posted in a request and return
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* if it is a valid ID
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*
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* @param string $name Optionnal, the name of the post field
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* @return int $convID The ID of the conversation
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*/
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function getPostConversationID(string $name = "conversationID") : int {
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//Get conversationID
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if(!isset($_POST[$name]))
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Rest_fatal_error(400, "Excepted conversation ID in '".$name."' !");
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$conversationID = toInt($_POST[$name]);
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//Check conversationID validity
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if($conversationID < 1)
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Rest_fatal_error(400, "Invalid conversation ID !");
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//Check if conversation exists
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if(!CS::get()->components->conversations->exist($conversationID))
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Rest_fatal_error(404, "Specified conversation not found!");
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return $conversationID;
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}
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/**
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* Get the ID of a post in a rest request
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*
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* @param string $name Optionnal, the name of the post id field
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* @return int $postID The ID of the post
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*/
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function getPostPostID(string $name = "postID") : int {
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//Get postID
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if(!isset($_POST[$name]))
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Rest_fatal_error(400, "Excepted post ID in '".$name."' !");
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$postID = toInt($_POST[$name]);
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//Check post ID validity
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if($postID < 1)
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Rest_fatal_error(400, "Invalid post ID!");
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//Check if the post exists
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if(!CS::get()->components->posts->exist($postID))
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Rest_fatal_error(404, "Specified post does not exists!");
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return $postID;
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}
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/**
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* Get the ID of a movie in a rest request
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*
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* @param string $name Optionnal, the name of the post ID field
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* @return int $movieID The ID of the movie
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*/
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function getPostMovieId(string $name = "movieID") : int {
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//Get movieID
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if(!isset($_POST[$name]))
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Rest_fatal_error(400, "Excepted movie ID in '".$name."' !");
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$movieID = toInt($_POST[$name]);
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//Check movie ID validity
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if($movieID < 1)
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Rest_fatal_error(400, "Invalid movie ID in '".$name."' !");
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//Check if the movie exists
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if(!CS::get()->components->movies->exist($movieID))
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Rest_fatal_error(404, "Specified movie does not exists!");
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return $movieID;
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}
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/**
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* Get a timestamp posted in a post request
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*
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* @param string $name The name of the $_POST entry
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* @return int The timestamp if everything went well
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*/
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function getPostTimeStamp(string $name) : int {
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//Check if the variable exists
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if(!isset($_POST[$name]))
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Rest_fatal_error(400, "Please specify a timestamp in '".$name."' ! ");
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$timestamp = toInt($_POST[$name]);
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//Check timestamp validity
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if($timestamp < 10000)
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Rest_fatal_error(400, "Please specify a valid timestamp value in ".$timestamp." !");
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//Return timestamp
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return $timestamp;
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}
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/**
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* Check the validity of an file posted in a request
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*
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* @param string $name The name of the $_FILES entry
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* @return bool True if the file is valid / false else
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*/
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function check_post_file(string $name) : bool {
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//Check if file exists
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if(!isset($_FILES[$name]))
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return false;
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//Check for errors
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if($_FILES[$name]['error'] != 0)
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return false;
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//Check if the file is empty
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if($_FILES[$name]['size'] < 1)
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return false;
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return true;
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}
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/**
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* Check the validity of a URL specified in a request
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*
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* @param string $name The name of the $_POST field containing the URL
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* @return bool True if the url is valid / false else
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*/
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function check_post_url(string $name) : bool {
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//Check if image exists
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if(!isset($_POST[$name]))
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return false;
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$url = $_POST[$name];
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//Check URL
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if(!filter_var($url, FILTER_VALIDATE_URL))
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return false;
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//The URL seems to be valid
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return true;
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}
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/**
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* Check the validity of a Youtube video ID
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*
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* @param string $id The ID of the YouTube video
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* @return bool True if the ID is valid / false else
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*/
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function check_youtube_id(string $id) : bool {
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//Check length
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if(strlen($id) < 5)
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return FALSE;
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//Check for illegal characters
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if($id !== str_replace(array("/", "\\", "@", "&", "?", ".", "'", '"'), "", $id))
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return FALSE;
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//The video is considered as valid
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return TRUE;
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} |