Strings::decrypt() - Code Metrics - Inspection of "Merge pull request #42 from w3l/dev" - w3l/holt45 - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 74479f...058a43 )

by w3l

created 2016-02-06 21:27 UTC

Strings::decrypt() B

↳ Parent: Strings

Complexity

Conditions	1
Paths	1

Size

Total Lines	29
Code Lines	19

Duplication

Lines	0
Ratio	0 %

Importance

Changes	5
Bugs	0	Features	0

Metric	Value
c	5
b	0
f	0
dl	0
loc	29
rs	8.8571
cc	1
eloc	19
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 Holt45Exception('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 Holt45Exception('mcrypt not loaded');
30			}
31
32			$initializationVector = mcrypt_create_iv(
33			mcrypt_get_iv_size(
34			MCRYPT_RIJNDAEL_256,
35			MCRYPT_MODE_ECB
36			),
37			MCRYPT_DEV_URANDOM
38			);
39
40			$encryptedString = $initializationVector.mcrypt_encrypt(
41			MCRYPT_RIJNDAEL_256,
42			hash("sha256", $key, true),
43			$string,
44			MCRYPT_MODE_CBC,
45			$initializationVector
46			);
47
48			return base64_encode($encryptedString);
49			}
50
51			/**
52			* Decrypt string
53			*
54			* NOTICE: the code in general, this method in particular, comes with absolutely no warranty. If security is
55			* important for you, then use a purpose built package. https://github.com/defuse/php-encryption seems like
56			* a good candidate.
57			* @deprecated Do not trust a two-line decryption-method.
58			*
59			* @param string $string String to decrypt
60			* @param string $key Key to encrypt/decrypt.
61			* @return string Decrypted string
62			*/
63			public static function decrypt($string, $key)
64			{
65			$encryptedString = base64_decode($string);
66
67			$initializationVector = substr(
68			$encryptedString,
69			0,
70			mcrypt_get_iv_size(
71			MCRYPT_RIJNDAEL_256,
72			MCRYPT_MODE_ECB
73			)
74			);
75
76			$decryptedString = mcrypt_decrypt(
77			MCRYPT_RIJNDAEL_256,
78			hash("sha256", $key, true),
79			substr(
80			$encryptedString,
81			mcrypt_get_iv_size(
82			MCRYPT_RIJNDAEL_256,
83			MCRYPT_MODE_ECB
84			)
85			),
86			MCRYPT_MODE_CBC,
87			$initializationVector
88			);
89
90			return $decryptedString;
91			}
92
93			/**
94			* Obfuscate string (url-safe and somewhat hard to guess).
95			*
96			* @param string $input The text that should be obfuscated
97			* @return string Obfuscated string
98			*/
99			public static function obfuscateString($input)
100			{
101			return bin2hex(base64_encode(strrev($input)));
102			}
103
104			/**
105			* Deobfuscate string
106			*
107			* @param string $input Obfuscated string
108			* @return string Deobfuscated string
109			*/
110			public static function deobfuscateString($input)
111			{
112			return strrev(base64_decode(hex2bin($input)));
113			}
114
115			/**
116			* Convert <textarea> to [textarea].
117			*
118			* @param string $html
119			* @return string
120			*/
121			public static function textareaEncode($html)
122			{
123			return preg_replace("/<textarea(.?)>(.?)<\/textarea>/is", "[textarea$1]$2[/textarea]", $html);
124			}
125
126			/**
127			* Convert [textarea] to <textarea>.
128			*
129			* @param string $html
130			* @return string
131			*/
132			public static function textareaDecode($html)
133			{
134			return preg_replace("/\[textarea(.?)\](.?)\[\/textarea\]/is", "<textarea$1>$2</textarea>", $html);
135			}
136
137			/**
138			* To replace "Hallo [@var] world" with $value.
139			*
140			* Example:
141			* ```php
142			* replace_string($string, array("val1" => "foo", "val2" => "bar"))
143			* ```
144			*
145			* @param string $langString String containing placeholder.
146			* @param array $dynamicContent key->value array.
147			* @return string String with placeholder replaced.
148			*/
149			public static function replaceString($langString, $dynamicContent = array())
150			{
151			foreach ($dynamicContent as $k => $v) {
152			$langString = str_replace("[@".$k."]", $v, $langString);
153			}
154			return $langString;
155			}
156
157			/**
158			* Creates rainbow-colored text.
159			*
160			* @uses Holt45::colorBlend()
161			* @uses Holt45::rgbhex()
162			*
163			* @param string $text Text wanted coloured.
164			* @return string String with span-tags with color.
165			*/
166			public static function rainbowText($text)
167			{
168			$colorsBase = array(
169			array(255, 0, 0),
170			array(255, 102, 0),
171			array(255, 238, 0),
172			array(0, 255, 0),
173			array(0, 153, 255),
174			array(68, 0, 255),
175			array(153, 0, 255)
176			);
177
178			$colorsBuild = array();
179
180			$strlenText = strlen($text);
181
182			if ($strlenText > 7) {
183			while (count($colorsBuild) < $strlenText) {
184			for ($i = 0, $size = count($colorsBase); $i < $size; $i++) {
185
186			$colorsBuild[] = $colorsBase[$i];
187
188			if (count($colorsBuild) >= $strlenText) {
189			continue 2;
190			}
191
192			if ($i < count($colorsBase)-1) {
193
194			$colorsBuild[] = self::colorBlend($colorsBase[$i], $colorsBase[$i+1]);
195
196			if (count($colorsBuild) >= $strlenText) {
197			continue 2;
198			}
199			}
200			}
201			$colorsBase = $colorsBuild;
202			$colorsBuild = array();
203			}
204			} elseif ($strlenText <= 7) {
205			$colorsBuild = $colorsBase;
206			}
207
208			$arrayText = str_split($text);
209			$returnText = "";
210			for ($i = 0, $size = count($arrayText); $i < $size; $i++) {
211			$returnText .= '<span style="color: #'.self::rgbhex($colorsBuild[$i]).';">'.$arrayText[$i].'</span>';
212			}
213			return $returnText;
214			}
215
216			/**
217			* Get the symbol from a list of keyboard-keys...
218			*
219			* @used-by Holt45::kbdShortcut()
220			*
221			* @param string $inputKey Text
222			* @param string $inputOperatingSystem default\|auto\|win\|mac\|linux
223			* @return null\|string HTML Entity (decimal)
224			*/
225			public static function kbdSymbol($inputKey, $inputOperatingSystem = "default")
226			{
227			$inputKey = mb_strtolower($inputKey);
228
229			if ($inputOperatingSystem == "auto") {
230
231			$inputOperatingSystem = "default";
232
233			$getClientOS = self::getClientOperatingSystem();
234
235			if ($getClientOS == "linux" \|\|
236			$getClientOS == "mac" \|\|
237			$getClientOS == "windows") {
238			$inputOperatingSystem = $getClientOS;
239			}
240			}
241
242			$arrayConvert = array(
243			"return" => "enter",
244			"control" => "ctrl",
245			"escape" => "esc",
246			"caps lock" => "caps-lock",
247			"page up" => "page-up",
248			"page down" => "page-down",
249			"arrow left" => "arrow-left",
250			"left" => "arrow-left",
251			"arrow up" => "arrow-up",
252			"up" => "arrow-up",
253			"arrow right" => "arrow-right",
254			"right" => "arrow-right",
255			"arrow down" => "arrow-down",
256			"down" => "arrow-down"
257			);
258
259			/* Convert input */
260			if (array_key_exists($inputKey, $arrayConvert)) {
261			$inputKey = $arrayConvert[$inputKey];
262			}
263
264			$arrayKeySymbols = array(
265			"shift" => array("default" => "⇧"),
266			"opt" => array("default" => "⌥"),
267			"enter" => array("default" => "⏎", "mac" => "⌤"),
268			"alt" => array("default" => "⎇", "mac" => "⌥"),
269			"delete" => array("default" => "⌫"),
270			"ctrl" => array("default" => "✲", "windows" => "✲", "linux" => "⎈", "mac" => "^"),
271			"esc" => array("default" => "⎋"),
272			"command" => array("default" => "⌘"),
273			"tab" => array("default" => "↹", "mac" => "⇥"),
274			"caps-lock" => array("default" => "A", "mac" => "⇪"),
275			"page-up" => array("default" => "▲", "mac" => "⇞"),
276			"page-down" => array("default" => "▼", "mac" => "⇟"),
277			"arrow-left" => array("default" => "←"),
278			"arrow-up" => array("default" => "↑"),
279			"arrow-right" => array("default" => "→"),
280			"arrow-down" => array("default" => "↓"),
281			// Sun
282			"compose" => array("default" => "⎄"),
283			"meta" => array("default" => "&#9670")
284			);
285
286			if (array_key_exists($inputKey, $arrayKeySymbols)) {
287
288			return ((array_key_exists($inputOperatingSystem, $arrayKeySymbols[$inputKey])) ?
289			$arrayKeySymbols[$inputKey][$inputOperatingSystem] :
290			$arrayKeySymbols[$inputKey]["default"]);
291			}
292
293			return null;
294			}
295
296			/**
297			* Show fancy buttons for keyboard-shortcuts.
298			*
299			* @uses Holt45::kbdSymbol()
300			*
301			* @param array $inputArrayKeys
302			* @param string $inputOperatingSystem
303			* @param string $inputKbdClass
304			* @param string $inputKbdSymbolClass
305			* @param string $inputJoinGlue Glue
306			* @return string String of html
307			*/
308			public static function kbdShortcut(
309			$inputArrayKeys,
310			$inputOperatingSystem = "default",
311			$inputKbdClass = "holt45-kbd",
312			$inputKbdSymbolClass = "holt45-kbd__symbol",
313			$inputJoinGlue = " + "
314			) {
315			$returnArray = array();
316
317			foreach ($inputArrayKeys as $key) {
318
319			$kbdSymbol = self::kbdSymbol($key, $inputOperatingSystem);
320
321			$kbdSymbolHtml = "";
322
323			if ($kbdSymbol !== null) {
324			$kbdSymbolHtml = '<span class="'.$inputKbdSymbolClass.'">'.$kbdSymbol.'</span>';
325			}
326
327			$returnArray[] = '<kbd class="'.$inputKbdClass.'">'.$kbdSymbolHtml.$key.'</kbd>';
328
329			}
330
331			return implode($inputJoinGlue, $returnArray);
332			}
333
334			/**
335			* Attempting to keep CSS on one line with scoped style.
336			*
337			* NOTICE: This is a rough estimate, font type, design, etc affects the results.
338			*
339			* @param string $text
340			* @param string $cssSelector
341			* @param int $fontSizePx
342			* @param int $minPageWidthPx
343			* @return null\|string Scoped style
344			*/
345			public static function cssOneLineText($text, $cssSelector = "h1", $fontSizePx = 36, $minPageWidthPx = 320)
346			{
347			$countText = strlen($text)+1;
348
349			$fontWidth = ($fontSizePx / 2);
350
351			if ($minPageWidthPx < $countText) {
352			$minPageWidthPx = $countText;
353			}
354			if (($countText * $fontWidth) > $minPageWidthPx) {
355
356			$cssNewFontSizePx = round(($minPageWidthPx / $countText) * 2, 2);
357			$cssNewFontSizeVw = round((100/$countText) * 2, 2);
358
359			$cssBreakpointPx = round($countText * $fontWidth);
360
361			return '<style scoped>@media (max-width: '.$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...
362			}
363			return null;
364			}
365			}
366

w3l / holt45

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