Strings::decrypt() - Code Metrics - Inspection of "Dev" - w3l/holt45 - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#42)

by w3l

created 2016-02-06 20:36 UTC

Strings::decrypt() A

↳ Parent: Strings

Complexity

Conditions	1
Paths	1

Size

Total Lines	23
Code Lines	16

Duplication

Lines	0
Ratio	0 %

Importance

Changes	3
Bugs	0	Features	0

Metric	Value
c	3
b	0
f	0
dl	0
loc	23
rs	9.0856
cc	1
eloc	16
nc	1
nop	2

<?php
/**
 * Strings.php
 */
namespace w3l\Holt45;

/**
 * Handle strings(convert, encode, replace, etc).
 */
trait Strings
{
    /**
     * Encrypt string
     *
     * NOTICE: the code in general, this method in particular, comes with absolutely no warranty. If security is
     * important for you, then use a purpose built package. https://github.com/defuse/php-encryption seems like
     * a good candidate.
     * @deprecated Do not trust a two-line encryption-method.
     *
     * @throws Exception if extension mcrypt is not loaded.
     *
     * @param string $string String to encrypt
     * @param string $key Key to encrypt/decrypt.
     * @return string Encrypted string
     */
    public static function encrypt($string, $key)
    {
        if (!extension_loaded('mcrypt')) {
            throw new Exception('mcrypt not loaded');
        }

        $initializationVector = mcrypt_create_iv(
                                mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256,
                                                   MCRYPT_MODE_ECB),
                                MCRYPT_DEV_URANDOM
                                );
        
        $encryptedString = $initializationVector.mcrypt_encrypt(
                                                 MCRYPT_RIJNDAEL_256,
                                                 hash("sha256", $key, true),
                                                 $string,
                                                 MCRYPT_MODE_CBC,
                                                 $initializationVector
                                                 );
     
        return base64_encode($encryptedString);
    }
    
    /**
     * Decrypt string
     *
     * NOTICE: the code in general, this method in particular, comes with absolutely no warranty. If security is
     * important for you, then use a purpose built package. https://github.com/defuse/php-encryption seems like
     * a good candidate.
     * @deprecated Do not trust a two-line decryption-method.
     *
     * @param string $string String to decrypt
     * @param string $key Key to encrypt/decrypt.
     * @return string Decrypted string
     */
    public static function decrypt($string, $key)
    {
        $encryptedString = base64_decode($string);
       
        $initializationVector = substr(
                                $encryptedString,
                                0,
                                mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256,
                                                   MCRYPT_MODE_ECB)
                                );
        
        $decryptedString = mcrypt_decrypt(
                           MCRYPT_RIJNDAEL_256,
                           hash("sha256", $key, true),
                           substr($encryptedString,
                                  mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256,
                                                     MCRYPT_MODE_ECB)),
                           MCRYPT_MODE_CBC,
                           $initializationVector
                           );
        
        return $decryptedString;
    }

    /**
     * Obfuscate string (url-safe and somewhat hard to guess).
     *
     * @param string $input The text that should be obfuscated
     * @return string Obfuscated string
     */
    public static function obfuscateString($input)
    {
        return bin2hex(base64_encode(strrev($input)));
    }

    /**
     * Deobfuscate string
     *
     * @param string $input Obfuscated string
     * @return string Deobfuscated string
     */
    public static function deobfuscateString($input)
    {
        return strrev(base64_decode(hex2bin($input)));
    }

    /**
     * Convert <textarea> to [textarea].
     *
     * @param string $html
     * @return string
     */
    public static function textareaEncode($html)
    {
        return preg_replace("/<textarea(.*?)>(.*?)<\/textarea>/is", "[textarea$1]$2[/textarea]", $html);
    }

    /**
     * Convert [textarea] to <textarea>.
     *
     * @param string $html
     * @return string
     */
    public static function textareaDecode($html)
    {
        return preg_replace("/\[textarea(.*?)\](.*?)\[\/textarea\]/is", "<textarea$1>$2</textarea>", $html);
    }

    /**
     * To replace "Hallo [@var] world" with $value.
     *
     * Example:
     * ```php
     * replace_string($string, array("val1" => "foo", "val2" => "bar"))
     * ```
     *
     * @param string $langString String containing placeholder.
     * @param array $dynamicContent key->value array.
     * @return string String with placeholder replaced.
     */
    public static function replaceString($langString, $dynamicContent = array())
    {
        foreach ($dynamicContent as $k => $v) {
            $langString = str_replace("[@".$k."]", $v, $langString);
        }
        return $langString;
    }

    /**
     * Creates rainbow-colored text.
     *
     * @uses Holt45::colorBlend()
     * @uses Holt45::rgbhex()
     *
     * @param string $text Text wanted coloured.
     * @return string String with span-tags with color.
     */
    public static function rainbowText($text)
    {
        $colorsBase = array(
        array(255, 0, 0),
        array(255, 102, 0),
        array(255, 238, 0),
        array(0, 255, 0),
        array(0, 153, 255),
        array(68, 0, 255),
        array(153, 0, 255)
        );

        $colorsBuild = array();

        $strlenText = strlen($text);

        if ($strlenText > 7) {
            while (count($colorsBuild) < $strlenText) {
                for ($i = 0, $size = count($colorsBase); $i < $size; $i++) {

                    $colorsBuild[] = $colorsBase[$i];

                    if (count($colorsBuild) >= $strlenText) {
                        continue 2;
                    }

                    if ($i < count($colorsBase)-1) {

                        $colorsBuild[] = self::colorBlend($colorsBase[$i], $colorsBase[$i+1]);

                        if (count($colorsBuild) >= $strlenText) {
                            continue 2;
                        }
                    }
                }
                $colorsBase = $colorsBuild;
                $colorsBuild = array();
            }
        } elseif ($strlenText <= 7) {
            $colorsBuild = $colorsBase;
        }

        $arrayText = str_split($text);
        $returnText = "";
        for ($i = 0, $size = count($arrayText); $i < $size; $i++) {
            $returnText .= '<span style="color: #'.self::rgbhex($colorsBuild[$i]).';">'.$arrayText[$i].'</span>';
        }
        return $returnText;
    }
    
    /**
     * Get the symbol from a list of keyboard-keys...
     *
     * @used-by Holt45::kbdShortcut()
     *
     * @param string $inputKey Text
     * @param string $inputOperatingSystem default|auto|win|mac|linux
     * @return null|string HTML Entity (decimal)
     */
    public static function kbdSymbol($inputKey, $inputOperatingSystem = "default")
    {
        $inputKey = mb_strtolower($inputKey);
        
        if ($inputOperatingSystem == "auto") {
            
            $inputOperatingSystem = "default";
            
            $getClientOS = self::getClientOperatingSystem();
            
            if ($getClientOS == "linux" ||
                $getClientOS == "mac" ||
                $getClientOS == "windows") {
                   $inputOperatingSystem = $getClientOS;
            }
        }
        
        $arrayConvert = array(
        "return" => "enter",
        "control" => "ctrl",
        "escape" => "esc",
        "caps lock" => "caps-lock",
        "page up" => "page-up",
        "page down" => "page-down",
        "arrow left" => "arrow-left",
        "left" => "arrow-left",
        "arrow up" => "arrow-up",
        "up" => "arrow-up",
        "arrow right" => "arrow-right",
        "right" => "arrow-right",
        "arrow down" => "arrow-down",
        "down" => "arrow-down"
        );
        
        /* Convert input */
        if (array_key_exists($inputKey, $arrayConvert)) {
            $inputKey = $arrayConvert[$inputKey];
        }

        $arrayKeySymbols = array(
        "shift" => array("default" => "&#8679;"),
        "opt" => array("default" => "&#8997;"),
        "enter" => array("default" => "&#9166;", "mac" => "&#8996;"),
        "alt" => array("default" => "&#9095;", "mac" => "&#8997;"),
        "delete" => array("default" => "&#9003;"),
        "ctrl" => array("default" => "&#10034;", "windows" => "&#10034;", "linux" => "&#9096;", "mac" => "&#00094;"),
        "esc" => array("default" => "&#9099;"),
        "command" => array("default" => "&#8984;"),
        "tab" => array("default" => "&#8633;", "mac" => "&#8677;"),
        "caps-lock" => array("default" => "&#65;", "mac" => "&#8682;"),
        "page-up" => array("default" => "&#9650;", "mac" => "&#8670;"),
        "page-down" => array("default" => "&#9660;", "mac" => "&#8671;"),
        "arrow-left" => array("default" => "&#8592;"),
        "arrow-up" => array("default" => "&#8593;"),
        "arrow-right" => array("default" => "&#8594;"),
        "arrow-down" => array("default" => "&#8595;"),
        // Sun
        "compose" => array("default" => "&#9092;"),
        "meta" => array("default" => "&#9670")
        );
        
        if (array_key_exists($inputKey, $arrayKeySymbols)) {
            
            return ((array_key_exists($inputOperatingSystem, $arrayKeySymbols[$inputKey])) ?
                                      $arrayKeySymbols[$inputKey][$inputOperatingSystem] :
                                      $arrayKeySymbols[$inputKey]["default"]);
        }
        
        return null;
    }

    /**
     * Show fancy buttons for keyboard-shortcuts.
     *
     * @uses Holt45::kbdSymbol()
     *
     * @param array $inputArrayKeys
     * @param string $inputOperatingSystem
     * @param string $inputKbdClass
     * @param string $inputKbdSymbolClass
     * @param string $inputJoinGlue Glue
     * @return string String of html
     */
    public static function kbdShortcut(
        $inputArrayKeys,
        $inputOperatingSystem = "default",
        $inputKbdClass = "holt45-kbd",
        $inputKbdSymbolClass = "holt45-kbd__symbol",
        $inputJoinGlue = " + "
    ) {
        $returnArray = array();

        foreach ($inputArrayKeys as $key) {
            
            $kbdSymbol = self::kbdSymbol($key, $inputOperatingSystem);
            
            $kbdSymbolHtml = "";
            
            if ($kbdSymbol !== null) {
                $kbdSymbolHtml = '<span class="'.$inputKbdSymbolClass.'">'.$kbdSymbol.'</span>';
            }
            
            $returnArray[] = '<kbd class="'.$inputKbdClass.'">'.$kbdSymbolHtml.$key.'</kbd>';
            
        }

        return implode($inputJoinGlue, $returnArray);
    }

    /**
     * Attempting to keep CSS on one line with scoped style.
     *
     * NOTICE: This is a rough estimate, font type, design, etc affects the results.
     *
     * @param string $text
     * @param string $cssSelector
     * @param int $fontSizePx
     * @param int $minPageWidthPx
     * @return null|string Scoped style
     */
    public static function cssOneLineText($text, $cssSelector = "h1", $fontSizePx = 36, $minPageWidthPx = 320)
    {
        $countText = strlen($text)+1;

        $fontWidth = ($fontSizePx / 2);

        if ($minPageWidthPx < $countText) {
            $minPageWidthPx = $countText;
        }
        if (($countText * $fontWidth) > $minPageWidthPx) {

            $cssNewFontSizePx = round(($minPageWidthPx / $countText) * 2, 2);
            $cssNewFontSizeVw = round((100/$countText) * 2, 2);

            $cssBreakpointPx = round($countText * $fontWidth);

            return '<style scoped>@media (max-width: '.$cssBreakpointPx.'px) { '.$cssSelector.' { font-size: '.$cssNewFontSizePx.'px; font-size: '.$cssNewFontSizeVw.'vw; } }</style>';

        }
        return null;
    }
}


1			<?php
2			/**
3			* Strings.php
4			*/
5			namespace w3l\Holt45;
6
7			/**
8			* Handle strings(convert, encode, replace, etc).
9			*/
10			trait Strings
11			{
12			/**
13			* Encrypt string
14			*
15			* NOTICE: the code in general, this method in particular, comes with absolutely no warranty. If security is
16			* important for you, then use a purpose built package. https://github.com/defuse/php-encryption seems like
17			* a good candidate.
18			* @deprecated Do not trust a two-line encryption-method.
19			*
20			* @throws Exception if extension mcrypt is not loaded.
21			*
22			* @param string $string String to encrypt
23			* @param string $key Key to encrypt/decrypt.
24			* @return string Encrypted string
25			*/
26			public static function encrypt($string, $key)
27			{
28			if (!extension_loaded('mcrypt')) {
29			throw new Exception('mcrypt not loaded');
30			}
31
32			$initializationVector = mcrypt_create_iv(
33			mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256,
34			MCRYPT_MODE_ECB),
35			MCRYPT_DEV_URANDOM
36			);
37
38			$encryptedString = $initializationVector.mcrypt_encrypt(
39			MCRYPT_RIJNDAEL_256,
40			hash("sha256", $key, true),
41			$string,
42			MCRYPT_MODE_CBC,
43			$initializationVector
44			);
45
46			return base64_encode($encryptedString);
47			}
48
49			/**
50			* Decrypt string
51			*
52			* NOTICE: the code in general, this method in particular, comes with absolutely no warranty. If security is
53			* important for you, then use a purpose built package. https://github.com/defuse/php-encryption seems like
54			* a good candidate.
55			* @deprecated Do not trust a two-line decryption-method.
56			*
57			* @param string $string String to decrypt
58			* @param string $key Key to encrypt/decrypt.
59			* @return string Decrypted string
60			*/
61			public static function decrypt($string, $key)
62			{
63			$encryptedString = base64_decode($string);
64
65			$initializationVector = substr(
66			$encryptedString,
67			0,
68			mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256,
69			MCRYPT_MODE_ECB)
70			);
71
72			$decryptedString = mcrypt_decrypt(
73			MCRYPT_RIJNDAEL_256,
74			hash("sha256", $key, true),
75			substr($encryptedString,
76			mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256,
77			MCRYPT_MODE_ECB)),
78			MCRYPT_MODE_CBC,
79			$initializationVector
80			);
81
82			return $decryptedString;
83			}
84
85			/**
86			* Obfuscate string (url-safe and somewhat hard to guess).
87			*
88			* @param string $input The text that should be obfuscated
89			* @return string Obfuscated string
90			*/
91			public static function obfuscateString($input)
92			{
93			return bin2hex(base64_encode(strrev($input)));
94			}
95
96			/**
97			* Deobfuscate string
98			*
99			* @param string $input Obfuscated string
100			* @return string Deobfuscated string
101			*/
102			public static function deobfuscateString($input)
103			{
104			return strrev(base64_decode(hex2bin($input)));
105			}
106
107			/**
108			* Convert <textarea> to [textarea].
109			*
110			* @param string $html
111			* @return string
112			*/
113			public static function textareaEncode($html)
114			{
115			return preg_replace("/<textarea(.?)>(.?)<\/textarea>/is", "[textarea$1]$2[/textarea]", $html);
116			}
117
118			/**
119			* Convert [textarea] to <textarea>.
120			*
121			* @param string $html
122			* @return string
123			*/
124			public static function textareaDecode($html)
125			{
126			return preg_replace("/\[textarea(.?)\](.?)\[\/textarea\]/is", "<textarea$1>$2</textarea>", $html);
127			}
128
129			/**
130			* To replace "Hallo [@var] world" with $value.
131			*
132			* Example:
133			* ```php
134			* replace_string($string, array("val1" => "foo", "val2" => "bar"))
135			* ```
136			*
137			* @param string $langString String containing placeholder.
138			* @param array $dynamicContent key->value array.
139			* @return string String with placeholder replaced.
140			*/
141			public static function replaceString($langString, $dynamicContent = array())
142			{
143			foreach ($dynamicContent as $k => $v) {
144			$langString = str_replace("[@".$k."]", $v, $langString);
145			}
146			return $langString;
147			}
148
149			/**
150			* Creates rainbow-colored text.
151			*
152			* @uses Holt45::colorBlend()
153			* @uses Holt45::rgbhex()
154			*
155			* @param string $text Text wanted coloured.
156			* @return string String with span-tags with color.
157			*/
158			public static function rainbowText($text)
159			{
160			$colorsBase = array(
161			array(255, 0, 0),
162			array(255, 102, 0),
163			array(255, 238, 0),
164			array(0, 255, 0),
165			array(0, 153, 255),
166			array(68, 0, 255),
167			array(153, 0, 255)
168			);
169
170			$colorsBuild = array();
171
172			$strlenText = strlen($text);
173
174			if ($strlenText > 7) {
175			while (count($colorsBuild) < $strlenText) {
176			for ($i = 0, $size = count($colorsBase); $i < $size; $i++) {
177
178			$colorsBuild[] = $colorsBase[$i];
179
180			if (count($colorsBuild) >= $strlenText) {
181			continue 2;
182			}
183
184			if ($i < count($colorsBase)-1) {
185
186			$colorsBuild[] = self::colorBlend($colorsBase[$i], $colorsBase[$i+1]);
187
188			if (count($colorsBuild) >= $strlenText) {
189			continue 2;
190			}
191			}
192			}
193			$colorsBase = $colorsBuild;
194			$colorsBuild = array();
195			}
196			} elseif ($strlenText <= 7) {
197			$colorsBuild = $colorsBase;
198			}
199
200			$arrayText = str_split($text);
201			$returnText = "";
202			for ($i = 0, $size = count($arrayText); $i < $size; $i++) {
203			$returnText .= '<span style="color: #'.self::rgbhex($colorsBuild[$i]).';">'.$arrayText[$i].'</span>';
204			}
205			return $returnText;
206			}
207
208			/**
209			* Get the symbol from a list of keyboard-keys...
210			*
211			* @used-by Holt45::kbdShortcut()
212			*
213			* @param string $inputKey Text
214			* @param string $inputOperatingSystem default\|auto\|win\|mac\|linux
215			* @return null\|string HTML Entity (decimal)
216			*/
217			public static function kbdSymbol($inputKey, $inputOperatingSystem = "default")
218			{
219			$inputKey = mb_strtolower($inputKey);
220
221			if ($inputOperatingSystem == "auto") {
222
223			$inputOperatingSystem = "default";
224
225			$getClientOS = self::getClientOperatingSystem();
226
227			if ($getClientOS == "linux" \|\|
228			$getClientOS == "mac" \|\|
229			$getClientOS == "windows") {
230			$inputOperatingSystem = $getClientOS;
231			}
232			}
233
234			$arrayConvert = array(
235			"return" => "enter",
236			"control" => "ctrl",
237			"escape" => "esc",
238			"caps lock" => "caps-lock",
239			"page up" => "page-up",
240			"page down" => "page-down",
241			"arrow left" => "arrow-left",
242			"left" => "arrow-left",
243			"arrow up" => "arrow-up",
244			"up" => "arrow-up",
245			"arrow right" => "arrow-right",
246			"right" => "arrow-right",
247			"arrow down" => "arrow-down",
248			"down" => "arrow-down"
249			);
250
251			/* Convert input */
252			if (array_key_exists($inputKey, $arrayConvert)) {
253			$inputKey = $arrayConvert[$inputKey];
254			}
255
256			$arrayKeySymbols = array(
257			"shift" => array("default" => "⇧"),
258			"opt" => array("default" => "⌥"),
259			"enter" => array("default" => "⏎", "mac" => "⌤"),
260			"alt" => array("default" => "⎇", "mac" => "⌥"),
261			"delete" => array("default" => "⌫"),
262			"ctrl" => array("default" => "✲", "windows" => "✲", "linux" => "⎈", "mac" => "^"),
263			"esc" => array("default" => "⎋"),
264			"command" => array("default" => "⌘"),
265			"tab" => array("default" => "↹", "mac" => "⇥"),
266			"caps-lock" => array("default" => "A", "mac" => "⇪"),
267			"page-up" => array("default" => "▲", "mac" => "⇞"),
268			"page-down" => array("default" => "▼", "mac" => "⇟"),
269			"arrow-left" => array("default" => "←"),
270			"arrow-up" => array("default" => "↑"),
271			"arrow-right" => array("default" => "→"),
272			"arrow-down" => array("default" => "↓"),
273			// Sun
274			"compose" => array("default" => "⎄"),
275			"meta" => array("default" => "&#9670")
276			);
277
278			if (array_key_exists($inputKey, $arrayKeySymbols)) {
279
280			return ((array_key_exists($inputOperatingSystem, $arrayKeySymbols[$inputKey])) ?
281			$arrayKeySymbols[$inputKey][$inputOperatingSystem] :
282			$arrayKeySymbols[$inputKey]["default"]);
283			}
284
285			return null;
286			}
287
288			/**
289			* Show fancy buttons for keyboard-shortcuts.
290			*
291			* @uses Holt45::kbdSymbol()
292			*
293			* @param array $inputArrayKeys
294			* @param string $inputOperatingSystem
295			* @param string $inputKbdClass
296			* @param string $inputKbdSymbolClass
297			* @param string $inputJoinGlue Glue
298			* @return string String of html
299			*/
300			public static function kbdShortcut(
301			$inputArrayKeys,
302			$inputOperatingSystem = "default",
303			$inputKbdClass = "holt45-kbd",
304			$inputKbdSymbolClass = "holt45-kbd__symbol",
305			$inputJoinGlue = " + "
306			) {
307			$returnArray = array();
308
309			foreach ($inputArrayKeys as $key) {
310
311			$kbdSymbol = self::kbdSymbol($key, $inputOperatingSystem);
312
313			$kbdSymbolHtml = "";
314
315			if ($kbdSymbol !== null) {
316			$kbdSymbolHtml = '<span class="'.$inputKbdSymbolClass.'">'.$kbdSymbol.'</span>';
317			}
318
319			$returnArray[] = '<kbd class="'.$inputKbdClass.'">'.$kbdSymbolHtml.$key.'</kbd>';
320
321			}
322
323			return implode($inputJoinGlue, $returnArray);
324			}
325
326			/**
327			* Attempting to keep CSS on one line with scoped style.
328			*
329			* NOTICE: This is a rough estimate, font type, design, etc affects the results.
330			*
331			* @param string $text
332			* @param string $cssSelector
333			* @param int $fontSizePx
334			* @param int $minPageWidthPx
335			* @return null\|string Scoped style
336			*/
337			public static function cssOneLineText($text, $cssSelector = "h1", $fontSizePx = 36, $minPageWidthPx = 320)
338			{
339			$countText = strlen($text)+1;
340
341			$fontWidth = ($fontSizePx / 2);
342
343			if ($minPageWidthPx < $countText) {
344			$minPageWidthPx = $countText;
345			}
346			if (($countText * $fontWidth) > $minPageWidthPx) {
347
348			$cssNewFontSizePx = round(($minPageWidthPx / $countText) * 2, 2);
349			$cssNewFontSizeVw = round((100/$countText) * 2, 2);
350
351			$cssBreakpointPx = round($countText * $fontWidth);
352
353			return '<style scoped>@media (max-width: '.$cssBreakpointPx.'px) { '.$cssSelector.' { font-size: '.$cssNewFontSizePx.'px; font-size: '.$cssNewFontSizeVw.'vw; } }</style>';
			0 ignored issues – show Coding Style introduced 2016-02-05 02:00 UTC by Report Bug Copy Issue Report This line exceeds maximum limit of 120 characters; contains 183 characters Overly long lines are hard to read on any screen. Most code styles therefor impose a maximum limit on the number of characters in a line. Loading history...
354			}
355			return null;
356			}
357			}
358

w3l / holt45

GitHub Access Token became invalid

Pull Request — master (#42)

Strings::decrypt() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like