Tiqr / tiqr-server-libphp

library/tiqr/Tiqr/OATH/OCRA.php

Braces +45 added lines, -33 removed lines

@@ -125,13 +125,13 @@ 
         $cryptoFunction = $components[1];
         $dataInput = strtolower($components[2]); // lower here so we can do case insensitive comparisons
 
-        if(stripos($cryptoFunction, "hotp-sha1")!==false)
-            $crypto = "sha1";
-        elseif(stripos($cryptoFunction, "hotp-sha256")!==false)
-            $crypto = "sha256";
-        elseif(stripos($cryptoFunction, "hotp-sha512")!==false)
-            $crypto = "sha512";
-        else {
+        if(stripos($cryptoFunction, "hotp-sha1")!==false) {
+                    $crypto = "sha1";
+        } elseif(stripos($cryptoFunction, "hotp-sha256")!==false) {
+                    $crypto = "sha256";
+        } elseif(stripos($cryptoFunction, "hotp-sha512")!==false) {
+                    $crypto = "sha512";
+        } else {
             throw new InvalidArgumentException('Unsupported OCRA CryptoFunction');
         }
 
@@ -149,56 +149,65 @@ 
         // Counter
         if($dataInput[0] == "c" ) {
             // Fix the length of the HEX string
-            while(strlen($counter) < 16)
-                $counter = "0" . $counter;
+            while(strlen($counter) < 16) {
+                            $counter = "0" . $counter;
+            }
             $counterLength=8;
         }
         // Question
         if($dataInput[0] == "q" ||
                 stripos($dataInput, "-q")!==false) {
-            while(strlen($question) < 256)
-                $question = $question . "0";
+            while(strlen($question) < 256) {
+                            $question = $question . "0";
+            }
             $questionLength=128;
         }
 
         // Password
         if(stripos($dataInput, "psha1")!==false) {
-            while(strlen($password) < 40)
-                $password = "0" . $password;
+            while(strlen($password) < 40) {
+                            $password = "0" . $password;
+            }
             $passwordLength=20;
         }
     
         if(stripos($dataInput, "psha256")!==false) {
-            while(strlen($password) < 64)
-                $password = "0" . $password;
+            while(strlen($password) < 64) {
+                            $password = "0" . $password;
+            }
             $passwordLength=32;
         }
         
         if(stripos($dataInput, "psha512")!==false) {
-            while(strlen($password) < 128)
-                $password = "0" . $password;
+            while(strlen($password) < 128) {
+                            $password = "0" . $password;
+            }
             $passwordLength=64;
         }
         
         // sessionInformation
         if(stripos($dataInput, "s064") !==false) {
-            while(strlen($sessionInformation) < 128)
-                $sessionInformation = "0" . $sessionInformation;
+            while(strlen($sessionInformation) < 128) {
+                            $sessionInformation = "0" . $sessionInformation;
+            }
 
             $sessionInformationLength=64;
         } else if(stripos($dataInput, "s128") !==false) {
-            while(strlen($sessionInformation) < 256)
-                $sessionInformation = "0" . $sessionInformation;
+            while(strlen($sessionInformation) < 256) {
+                            $sessionInformation = "0" . $sessionInformation;
+            }
         
             $sessionInformationLength=128;
         } else if(stripos($dataInput, "s256") !==false) {
-            while(strlen($sessionInformation) < 512)
-                $sessionInformation = "0" . $sessionInformation;
+            while(strlen($sessionInformation) < 512) {
+                            $sessionInformation = "0" . $sessionInformation;
+            }
         
             $sessionInformationLength=256;
         } else if(stripos($dataInput, "s512") !==false) {
-            while(strlen($sessionInformation) < 128)
-                $sessionInformation = "0" . $sessionInformation;
+            while(strlen($sessionInformation) < 128) {
+                            $sessionInformation = "0" . $sessionInformation;
+            }
         
             $sessionInformationLength=64;
         } else if (stripos($dataInput, "-s") !== false ) {
@@ -210,8 +219,9 @@ 
             // to prevent matching the "s" in the password input e.g. "psha1".
             // [C] | QFxx | [PH | Snnn | TG] : Challenge-Response computation
             // [C] | QFxx | [PH | TG] : Plain Signature computation
-            while(strlen($sessionInformation) < 128)
-                $sessionInformation = "0" . $sessionInformation;
+            while(strlen($sessionInformation) < 128) {
+                            $sessionInformation = "0" . $sessionInformation;
+            }
             
             $sessionInformationLength=64;
         }
@@ -221,8 +231,9 @@ 
         // TimeStamp
         if($dataInput[0] == "t" ||
                 stripos($dataInput, "-t") !== false) {
-            while(strlen($timeStamp) < 16)
-                $timeStamp = "0" . $timeStamp;
+            while(strlen($timeStamp) < 16) {
+                            $timeStamp = "0" . $timeStamp;
+            }
             $timeStampLength=8;
         }
 
@@ -289,10 +300,11 @@ 
 
         $hash = self::_hmac($crypto, $byteKey, $msg);
 
-        if ($codeDigits == 0)
-            $result = $hash;
-        else
-            $result = self::_oath_truncate($hash, $codeDigits);
+        if ($codeDigits == 0) {
+                    $result = $hash;
+        } else {
+                    $result = self::_oath_truncate($hash, $codeDigits);
+        }
              
         return $result;
     }

library/tiqr/Tiqr/OATH/OCRAParser.php

Indentation +201 added lines, -201 removed lines

@@ -2,32 +2,32 @@ 
 
 class OATH_OCRAParser {
 
-	private $OCRASuite = NULL;
+    private $OCRASuite = NULL;
 
-	private $OCRAVersion = NULL;
+    private $OCRAVersion = NULL;
 
-	private $CryptoFunctionType = NULL;
-	private $CryptoFunctionHash = NULL;
-	private $CryptoFunctionHashLength = NULL;
-	private $CryptoFunctionTruncation = NULL;
+    private $CryptoFunctionType = NULL;
+    private $CryptoFunctionHash = NULL;
+    private $CryptoFunctionHashLength = NULL;
+    private $CryptoFunctionTruncation = NULL;
 
-	private $C = FALSE;
-	private $Q = FALSE;
-	private $QType = 'N';
-	private $QLength = 8;
+    private $C = FALSE;
+    private $Q = FALSE;
+    private $QType = 'N';
+    private $QLength = 8;
 
-	private $P = FALSE;
-	private $PType = 'SHA1';
-	private $PLength = 20;
+    private $P = FALSE;
+    private $PType = 'SHA1';
+    private $PLength = 20;
 
-	private $S = FALSE;
-	private $SLength = 64;
+    private $S = FALSE;
+    private $SLength = 64;
 
-	private $T = FALSE;
-	private $TLength = 60; // 1M
-	private $TPeriods = array('H' => 3600, 'M' => 60, 'S' => 1);
+    private $T = FALSE;
+    private $TLength = 60; // 1M
+    private $TPeriods = array('H' => 3600, 'M' => 60, 'S' => 1);
 
-	private $supportedHashFunctions = array('SHA1' => 20, 'SHA256' => 32, 'SHA512' => 64);
+    private $supportedHashFunctions = array('SHA1' => 20, 'SHA256' => 32, 'SHA512' => 64);
 
 
     /**
@@ -35,149 +35,149 @@ 
      * @throws Exception
      */
     public function __construct(String $ocraSuite) {
-		$this->parseOCRASuite($ocraSuite);
-	}
+        $this->parseOCRASuite($ocraSuite);
+    }
 
-	/**
-	 * Inspired by https://github.com/bdauvergne/python-oath
+    /**
+     * Inspired by https://github.com/bdauvergne/python-oath
      *
      * @throws Exception
-	 */
-	private function parseOCRASuite($ocraSuite) {
-		if (!is_string($ocraSuite)) {
-			throw new Exception('OCRASuite not in string format: ' . var_export($ocraSuite, TRUE));
-		}
-
-		$ocraSuite = strtoupper($ocraSuite);
-		$this->OCRASuite = $ocraSuite;
-
-		$s = explode(':', $ocraSuite);
-		if (count($s) != 3) {
-			throw new Exception('Invalid OCRASuite format: ' . var_export($ocraSuite, TRUE));
-		}
-
-		$algo = explode('-', $s[0]);
-		if (count($algo) != 2) {
-			throw new Exception('Invalid OCRA version: ' . var_export($s[0], TRUE));
-		}
-
-		if ($algo[0] !== 'OCRA') {
-			throw new Exception('Unsupported OCRA algorithm: ' . var_export($algo[0], TRUE));
-		}
-
-		if ($algo[1] !== '1') {
-			throw new Exception('Unsupported OCRA version: ' . var_export($algo[1], TRUE));
-		}
-		$this->OCRAVersion = $algo[1];
-
-		$cf = explode('-', $s[1]);
-		if (count($cf) != 3) {
-			throw new Exception('Invalid OCRA suite crypto function: ' . var_export($s[1], TRUE));
-		}
-
-		if ($cf[0] !== 'HOTP') {
-			throw new Exception('Unsupported OCRA suite crypto function: ' . var_export($cf[0], TRUE));
-		}
-		$this->CryptoFunctionType = $cf[0];
-
-		if (!array_key_exists($cf[1], $this->supportedHashFunctions)) {
-			throw new Exception('Unsupported hash function in OCRA suite crypto function: ' . var_export($cf[1], TRUE));
-		}
-		$this->CryptoFunctionHash = $cf[1];
-		$this->CryptoFunctionHashLength = $this->supportedHashFunctions[$cf[1]];
-
-		if (!preg_match('/^\d+$/', $cf[2]) || (($cf[2] < 4 || $cf[2] > 10) && $cf[2] != 0)) {
-			throw new Exception('Invalid OCRA suite crypto function truncation length: ' . var_export($cf[2], TRUE));
-		}
-		$this->CryptoFunctionTruncation = intval($cf[2]);
-
-		$di = explode('-', $s[2]);
-		if (count($cf) == 0) {
-			throw new Exception('Invalid OCRA suite data input: ' . var_export($s[2], TRUE));
-		}
-
-		$data_input = array();
-		foreach($di as $elem) {
-			$letter = $elem[0];
-			if (array_key_exists($letter, $data_input)) {
-				throw new Exception('Duplicate field in OCRA suite data input: ' . var_export($elem, TRUE));
-			}
-			$data_input[$letter] = 1;
-
-			if ($letter === 'C' && strlen($elem) == 1) {
-				$this->C = TRUE;
-			} elseif ($letter === 'Q') {
-				if (strlen($elem) == 1) {
-					$this->Q = TRUE;
-				} elseif (preg_match('/^Q([AHN])(\d+)$/', $elem, $match)) {
-					$q_len = intval($match[2]);
-					if ($q_len < 4 || $q_len > 64) {
-						throw new Exception('Invalid OCRA suite data input question length: ' . var_export($q_len, TRUE));
-					}
-					$this->Q = TRUE;
-					$this->QType = $match[1];
-					$this->QLength = $q_len;
-				} else {
-					throw new Exception('Invalid OCRA suite data input question: ' . var_export($elem, TRUE));
-				}
-			} elseif ($letter === 'P') {
-				if (strlen($elem) == 1) {
-					$this->P = TRUE;
-				} else {
-					$p_algo = substr($elem, 1);
-					if (!array_key_exists($p_algo, $this->supportedHashFunctions)) {
-						throw new Exception('Unsupported OCRA suite PIN hash function: ' . var_export($elem, TRUE));
-					}
-					$this->P = TRUE;
-					$this->PType = $p_algo;
-					$this->PLength = $this->supportedHashFunctions[$p_algo];
-				}
-			} elseif ($letter === 'S') {
-				if (strlen($elem) == 1) {
-					$this->S = TRUE;
-				} elseif (preg_match('/^S(\d+)$/', $elem, $match)) {
-					$s_len = intval($match[1]);
-					if ($s_len <= 0 || $s_len > 512) {
-						throw new Exception('Invalid OCRA suite data input session information length: ' . var_export($s_len, TRUE));
-					}
-
-					$this->S = TRUE;
-					$this->SLength = $s_len;
-				} else {
-					throw new Exception('Invalid OCRA suite data input session information length: ' . var_export($elem, TRUE));
-				}
-			} elseif ($letter === 'T') {
-				if (strlen($elem) == 1) {
-					$this->T = TRUE;
-				} elseif (preg_match('/^T(\d+[HMS])+$/', $elem)) {
-					preg_match_all('/(\d+)([HMS])/', $elem, $match);
-
-					if (count($match[1]) !== count(array_unique($match[2]))) {
-						throw new Exception('Duplicate definitions in OCRA suite data input timestamp: ' . var_export($elem, TRUE));
-					}
-
-					$length = 0;
-					for ($i = 0; $i < count($match[1]); $i++) {
-						$length += intval($match[1][$i]) * $this->TPeriods[$match[2][$i]];
-					}
-					if ($length <= 0) {
-						throw new Exception('Invalid OCRA suite data input timestamp: ' . var_export($elem, TRUE));
-					}
-
-					$this->T = TRUE;
-					$this->TLength = $length;
-				} else {
-					throw new Exception('Invalid OCRA suite data input timestamp: ' . var_export($elem, TRUE));
-				}
-			} else {
-				throw new Exception('Unsupported OCRA suite data input field: ' . var_export($elem, TRUE));
-			}
-		}
-
-		if (!$this->Q) {
-			throw new Exception('OCRA suite data input question not defined: ' . var_export($s[2], TRUE));
-		}
-	}
+     */
+    private function parseOCRASuite($ocraSuite) {
+        if (!is_string($ocraSuite)) {
+            throw new Exception('OCRASuite not in string format: ' . var_export($ocraSuite, TRUE));
+        }
+
+        $ocraSuite = strtoupper($ocraSuite);
+        $this->OCRASuite = $ocraSuite;
+
+        $s = explode(':', $ocraSuite);
+        if (count($s) != 3) {
+            throw new Exception('Invalid OCRASuite format: ' . var_export($ocraSuite, TRUE));
+        }
+
+        $algo = explode('-', $s[0]);
+        if (count($algo) != 2) {
+            throw new Exception('Invalid OCRA version: ' . var_export($s[0], TRUE));
+        }
+
+        if ($algo[0] !== 'OCRA') {
+            throw new Exception('Unsupported OCRA algorithm: ' . var_export($algo[0], TRUE));
+        }
+
+        if ($algo[1] !== '1') {
+            throw new Exception('Unsupported OCRA version: ' . var_export($algo[1], TRUE));
+        }
+        $this->OCRAVersion = $algo[1];
+
+        $cf = explode('-', $s[1]);
+        if (count($cf) != 3) {
+            throw new Exception('Invalid OCRA suite crypto function: ' . var_export($s[1], TRUE));
+        }
+
+        if ($cf[0] !== 'HOTP') {
+            throw new Exception('Unsupported OCRA suite crypto function: ' . var_export($cf[0], TRUE));
+        }
+        $this->CryptoFunctionType = $cf[0];
+
+        if (!array_key_exists($cf[1], $this->supportedHashFunctions)) {
+            throw new Exception('Unsupported hash function in OCRA suite crypto function: ' . var_export($cf[1], TRUE));
+        }
+        $this->CryptoFunctionHash = $cf[1];
+        $this->CryptoFunctionHashLength = $this->supportedHashFunctions[$cf[1]];
+
+        if (!preg_match('/^\d+$/', $cf[2]) || (($cf[2] < 4 || $cf[2] > 10) && $cf[2] != 0)) {
+            throw new Exception('Invalid OCRA suite crypto function truncation length: ' . var_export($cf[2], TRUE));
+        }
+        $this->CryptoFunctionTruncation = intval($cf[2]);
+
+        $di = explode('-', $s[2]);
+        if (count($cf) == 0) {
+            throw new Exception('Invalid OCRA suite data input: ' . var_export($s[2], TRUE));
+        }
+
+        $data_input = array();
+        foreach($di as $elem) {
+            $letter = $elem[0];
+            if (array_key_exists($letter, $data_input)) {
+                throw new Exception('Duplicate field in OCRA suite data input: ' . var_export($elem, TRUE));
+            }
+            $data_input[$letter] = 1;
+
+            if ($letter === 'C' && strlen($elem) == 1) {
+                $this->C = TRUE;
+            } elseif ($letter === 'Q') {
+                if (strlen($elem) == 1) {
+                    $this->Q = TRUE;
+                } elseif (preg_match('/^Q([AHN])(\d+)$/', $elem, $match)) {
+                    $q_len = intval($match[2]);
+                    if ($q_len < 4 || $q_len > 64) {
+                        throw new Exception('Invalid OCRA suite data input question length: ' . var_export($q_len, TRUE));
+                    }
+                    $this->Q = TRUE;
+                    $this->QType = $match[1];
+                    $this->QLength = $q_len;
+                } else {
+                    throw new Exception('Invalid OCRA suite data input question: ' . var_export($elem, TRUE));
+                }
+            } elseif ($letter === 'P') {
+                if (strlen($elem) == 1) {
+                    $this->P = TRUE;
+                } else {
+                    $p_algo = substr($elem, 1);
+                    if (!array_key_exists($p_algo, $this->supportedHashFunctions)) {
+                        throw new Exception('Unsupported OCRA suite PIN hash function: ' . var_export($elem, TRUE));
+                    }
+                    $this->P = TRUE;
+                    $this->PType = $p_algo;
+                    $this->PLength = $this->supportedHashFunctions[$p_algo];
+                }
+            } elseif ($letter === 'S') {
+                if (strlen($elem) == 1) {
+                    $this->S = TRUE;
+                } elseif (preg_match('/^S(\d+)$/', $elem, $match)) {
+                    $s_len = intval($match[1]);
+                    if ($s_len <= 0 || $s_len > 512) {
+                        throw new Exception('Invalid OCRA suite data input session information length: ' . var_export($s_len, TRUE));
+                    }
+
+                    $this->S = TRUE;
+                    $this->SLength = $s_len;
+                } else {
+                    throw new Exception('Invalid OCRA suite data input session information length: ' . var_export($elem, TRUE));
+                }
+            } elseif ($letter === 'T') {
+                if (strlen($elem) == 1) {
+                    $this->T = TRUE;
+                } elseif (preg_match('/^T(\d+[HMS])+$/', $elem)) {
+                    preg_match_all('/(\d+)([HMS])/', $elem, $match);
+
+                    if (count($match[1]) !== count(array_unique($match[2]))) {
+                        throw new Exception('Duplicate definitions in OCRA suite data input timestamp: ' . var_export($elem, TRUE));
+                    }
+
+                    $length = 0;
+                    for ($i = 0; $i < count($match[1]); $i++) {
+                        $length += intval($match[1][$i]) * $this->TPeriods[$match[2][$i]];
+                    }
+                    if ($length <= 0) {
+                        throw new Exception('Invalid OCRA suite data input timestamp: ' . var_export($elem, TRUE));
+                    }
+
+                    $this->T = TRUE;
+                    $this->TLength = $length;
+                } else {
+                    throw new Exception('Invalid OCRA suite data input timestamp: ' . var_export($elem, TRUE));
+                }
+            } else {
+                throw new Exception('Unsupported OCRA suite data input field: ' . var_export($elem, TRUE));
+            }
+        }
+
+        if (!$this->Q) {
+            throw new Exception('OCRA suite data input question not defined: ' . var_export($s[2], TRUE));
+        }
+    }
 
     /** Generate an OCRA challenge question according to the ocra suite specified in the constructor
      * @return String: The randomly generated OCRA question
@@ -190,50 +190,50 @@ 
      * Note that the question string is the exact question string a specified in the OCRA strandard (RFC 6287)
      * The challenge is not yet hex encoded as expected by OCRA::generateOCRA()
      */
-	public function generateChallenge() : String {
-		$q_length = $this->QLength;
-		$q_type = $this->QType;
+    public function generateChallenge() : String {
+        $q_length = $this->QLength;
+        $q_type = $this->QType;
 
         $bytes = Tiqr_Random::randomBytes($q_length);
 
-		switch($q_type) {
-			case 'A':
-				$challenge = base64_encode($bytes);
-				$tr = implode("", unpack('H*', $bytes));
-				$challenge = rtrim(strtr($challenge, '+/', $tr), '=');
-				break;
-			case 'H':
-				$challenge = implode("", unpack('H*', $bytes));
-				break;
-			case 'N':
-				$challenge = implode("", unpack('N*', $bytes));
-				break;
-			default:
-				throw new Exception('Unsupported OCRASuite challenge type: ' . var_export($q_type, TRUE));
-				break;
-		}
-
-		$challenge = substr($challenge, 0, $q_length);
-
-		return $challenge;
-	}
-
-
-	/**
-	 * Constant time string comparison, see http://codahale.com/a-lesson-in-timing-attacks/
-	 */
-	public static function constEqual(string $s1, string $s2): bool {
-		if (strlen($s1) != strlen($s2)) {
-			return FALSE;
-		}
-
-		$result = TRUE;
-		$length = strlen($s1);
-		for ($i = 0; $i < $length; $i++) {
-			$result &= ($s1[$i] == $s2[$i]);
-		}
-
-		return (boolean)$result;
-	}
+        switch($q_type) {
+            case 'A':
+                $challenge = base64_encode($bytes);
+                $tr = implode("", unpack('H*', $bytes));
+                $challenge = rtrim(strtr($challenge, '+/', $tr), '=');
+                break;
+            case 'H':
+                $challenge = implode("", unpack('H*', $bytes));
+                break;
+            case 'N':
+                $challenge = implode("", unpack('N*', $bytes));
+                break;
+            default:
+                throw new Exception('Unsupported OCRASuite challenge type: ' . var_export($q_type, TRUE));
+                break;
+        }
+
+        $challenge = substr($challenge, 0, $q_length);
+
+        return $challenge;
+    }
+
+
+    /**
+     * Constant time string comparison, see http://codahale.com/a-lesson-in-timing-attacks/
+     */
+    public static function constEqual(string $s1, string $s2): bool {
+        if (strlen($s1) != strlen($s2)) {
+            return FALSE;
+        }
+
+        $result = TRUE;
+        $length = strlen($s1);
+        for ($i = 0; $i < $length; $i++) {
+            $result &= ($s1[$i] == $s2[$i]);
+        }
+
+        return (boolean)$result;
+    }
 
 }