ManifestStrategy::useSha1() - Code Metrics - Inspection of "Manifest file strategy (updated)" - humbug/phar-updater - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#37)

by Pádraic

created 2017-05-14 21:53 UTC

ManifestStrategy::useSha1() A

↳ Parent: ManifestStrategy

Complexity

Conditions	1
Paths	1

Size

Total Lines	5
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	5
rs	9.4285
c	0
b	0
f	0
cc	1
eloc	3
nc	1
nop	0

<?php
/**
 * Humbug
 *
 * @category   Humbug
 * @package    Humbug
 * @copyright  Copyright (c) 2017 Patrick Dawkins
 * @license    https://github.com/padraic/phar-updater/blob/master/LICENSE New BSD License
 *
 */
namespace Humbug\SelfUpdate\Strategy;

use Humbug\SelfUpdate\Exception\HttpRequestException;
use Humbug\SelfUpdate\Exception\JsonParsingException;
use Humbug\SelfUpdate\Updater;
use Humbug\SelfUpdate\VersionParser;
use Humbug\SelfUpdate\Exception\RuntimeException;

final class ManifestStrategy implements StrategyInterface
{
    const SHA256 = 'sha256';

    const SHA1 = 'sha1';

    const STABLE = 'stable';

    const UNSTABLE = 'unstable';

    const ANY = 'any';

    /**
     * @var array
     */
    private $requiredKeys = array(self::SHA256, 'version', 'url');

    /**
     * @var string
     */
    private $hashAlgo = self::SHA256;

    /**
     * @var string
     */
    private $manifestUrl;

    /**
     * @var array
     */
    private $manifest;

    /**
     * @var array
     */
    private $availableVersions;

    /**
     * @var string
     */
    private $localVersion;

    /**
     * @var bool
     */
    private $allowMajor = false;

    /**
     * @var bool
     */
    private $allowUnstable = false;

    /**
     * @var bool
     */
    private $requireUnstable = false;

    /**
     * @var int
     */
    private $manifestTimeout = 60;

    /**
     * @var int
     */
    private $downloadTimeout = 60;

    /**
     * @var bool
     */
    private $ignorePhpReq = false;

    /**
     * Set version string of the local phar
     *
     * @param string $version
     */
    public function setCurrentLocalVersion($version)
    {
        $this->localVersion = $version;
        return $this;
    }

    /**
     * @param int $downloadTimeout
     * @return  self
     */
    public function setDownloadTimeout($downloadTimeout)
    {
        $this->downloadTimeout = $downloadTimeout;
        return $this;
    }

    /**
     * @param int $manifestTimeout
     * @return  self
     */
    public function setManifestTimeout($manifestTimeout)
    {
        $this->manifestTimeout = $manifestTimeout;
        return $this;
    }

    public function useSha1()
    {
        $this->requiredKeys[0] = self::SHA1;
        $this->hashAlgo = self::SHA1;
    }

    /**
     * If set, ignores any restrictions based on currently running PHP version.
     * @return  self
     */
    public function ignorePhpRequirements()
    {
        $this->ignorePhpReq = true;
        return $this;
    }

    /**
     * If set, ignores any restrictions based on currently running PHP version.
     * @return  self
     */
    public function allowMajorVersionUpdates()
    {
        $this->allowMajor = true;
        return $this;
    }

    /**
     * Set target stability
     *
     * @param string $stability
     */
    public function setStability($stability)
    {
        if ($stability !== self::STABLE && $stability !== self::UNSTABLE && $stability !== self::ANY) {
            throw new InvalidArgumentException(
                'Invalid stability value. Must be one of "stable", "unstable"'
            );
        }
        
        switch ($stability) {
            case self::ANY:
                $this->allowUnstableVersionUpdates();
                break;

            case self::UNSTABLE:
                $this->requireUnstable = true;
                break;
            
            default:
                break;
        }
    }

    /**
     * If set, ignores any restrictions based on currently running PHP version.
     * @return  self
     */
    public function allowUnstableVersionUpdates()
    {
        $this->allowUnstable = true;
        return $this;
    }

    public function setManifestUrl($url)
    {
        $this->manifestUrl = $url;
        return $this;
    }

    /**
     * {@inheritdoc}
     */
    public function getCurrentLocalVersion(Updater $updater)
    {
        return $this->localVersion;
    }

    /**
     * {@inheritdoc}
     */
    public function download(Updater $updater)
    {
        $version = $this->getCurrentRemoteVersion($updater);
        if ($version === false) {
            throw new RuntimeException('No remote versions found');
        }

        $versionInfo = $this->getAvailableVersions();
        if (!isset($versionInfo[$version])) {
            throw new RuntimeException(sprintf('Failed to find manifest item for version %s', $version));
        }

        $context = stream_context_create(['http' => ['timeout' => $this->downloadTimeout]]);
        /** Switch remote request errors to HttpRequestExceptions */
        set_error_handler(array($updater, 'throwHttpRequestException'));
        $fileContents = file_get_contents($versionInfo[$version]['url'], false, $context);
        restore_error_handler();

        if ($fileContents === false) {
            throw new HttpRequestException(sprintf('Failed to download file from URL: %s', $versionInfo[$version]['url']));
        }

        $tmpFilename = $updater->getTempPharFile();
        if (file_put_contents($tmpFilename, $fileContents) === false) {
            throw new RuntimeException(sprintf('Failed to write file: %s', $tmpFilename));
        }

        $tmpSha = hash_file($this->hashAlgo, $tmpFilename);
        if ($tmpSha !== $versionInfo[$version][$this->hashAlgo]) {
            unlink($tmpFilename);
            throw new RuntimeException(
                sprintf(
                    '%s verification failed: expected %s, actual %s',
                    strtoupper($this->hashAlgo),
                    $versionInfo[$version][$this->hashAlgo],
                    $tmpSha
                )
            );
        }
    }

    /**
     * {@inheritdoc}
     */
    public function getCurrentRemoteVersion(Updater $updater)
    {
        $versions = array_keys($this->getAvailableVersions());
        if (!$this->allowMajor) {
            $versions = $this->filterByLocalMajorVersion($versions);
        }
        if (!$this->ignorePhpReq) {
            $versions = $this->filterByPhpVersion($versions);
        }

        $versionParser = new VersionParser($versions);

        $mostRecent = $versionParser->getMostRecentStable();

        // Look for unstable updates if explicitly allowed, or if the local
        // version is already unstable and there is no new stable version.
        if (true === $this->requireUnstable) {
            $mostRecent = $versionParser->getMostRecentUnstable();
        } elseif ($this->allowUnstable || ($versionParser->isUnstable($this->localVersion)
        && version_compare($mostRecent, $this->localVersion, '<'))) {
            $mostRecent = $versionParser->getMostRecentAll();
        }

        return version_compare($mostRecent, $this->localVersion, '>') ? $mostRecent : false;
    }

    /**
     * Find update/upgrade notes for the new remote version.
     *
     * @param Updater $updater
     * @param bool $useBaseNote Return main note if no version specific update notes found.
     *
     * @return string|false A string if notes are found, or false otherwise.
     */
    public function getUpdateNotes(Updater $updater, $useBaseNote = false)
    {
        $versionInfo = $this->getRemoteVersionInfo($updater);
        if (empty($versionInfo['updating'])) {
            return false;
        }
        $localVersion = $this->getCurrentLocalVersion($updater);
        $items = isset($versionInfo['updating'][0]) ? $versionInfo['updating'] : [$versionInfo['updating']];
        foreach ($items as $updating) {
            if (!isset($updating['notes'])) {
                continue;
            } elseif (isset($updating['hide from'])
            && version_compare($localVersion, $updating['hide from'], '>=')) {
                continue;
            } elseif (isset($updating['show from'])
            && version_compare($localVersion, $updating['show from'], '<')) {
                continue;
            }

            return $updating['notes'];
        }

        if (true === $useBaseNote && !empty($versionInfo['notes'])) {
            return $versionInfo['notes'];
        }

        return false;
    }

    /**
     * Gets available versions to update to.
     *
     * @return array  An array keyed by the version name, whose elements are arrays
     *                containing version information ('name', $this->hashAlgo, and 'url').
     */
    private function getAvailableVersions()
    {
        if (isset($this->availableVersions)) {
            return $this->availableVersions;
        }

        $this->availableVersions = array();
        foreach ($this->retrieveManifest() as $key => $item) {
            if ($missing = array_diff($this->requiredKeys, array_keys($item))) {
                throw new RuntimeException(
                    sprintf(
                        'Manifest item %s missing required key(s): %s',
                        $key,
                        implode(',', $missing)
                    )
                );
            }
            $this->availableVersions[$item['version']] = $item;
        }
        return $this->availableVersions;
    }

    /**
     * Download and decode the JSON manifest file.
     *
     * @return array
     */
    private function retrieveManifest()
    {
        if (isset($this->manifest)) {
            return $this->manifest;
        }

        if (!isset($this->manifest)) {
            $context = stream_context_create(['http' => ['timeout' => $this->manifestTimeout]]);
            $manifestContents = file_get_contents($this->manifestUrl, false, $context);
            if ($manifestContents === false) {
                throw new RuntimeException(sprintf('Failed to download manifest: %s', $this->manifestUrl));
            }

            $this->manifest = json_decode($manifestContents, true, 512, JSON_OBJECT_AS_ARRAY);

            if (json_last_error() !== JSON_ERROR_NONE) {

                throw new JsonParsingException(
                    'Error parsing manifest file'
                    . (function_exists('json_last_error_msg') ? ': ' . json_last_error_msg() : '')
                );
            }
        }

        return $this->manifest;
    }

    /**
     * Get version information for the latest remote version.
     *
     * @param Updater $updater
     *
     * @return array
     */
    private function getRemoteVersionInfo(Updater $updater)
    {
        $version = $this->getCurrentRemoteVersion($updater);
        if ($version === false) {
            throw new RuntimeException('No remote versions found');
        }
        $versionInfo = $this->getAvailableVersions();
        if (!isset($versionInfo[$version])) {
            throw new RuntimeException(sprintf('Failed to find manifest item for version %s', $version));
        }
        return $versionInfo[$version];
    }

    /**
     * Filter a list of versions to those that match the current local version.
     *
     * @param string[] $versions
     *
     * @return string[]
     */
    private function filterByLocalMajorVersion(array $versions)
    {
        list($localMajorVersion, ) = explode('.', $this->localVersion, 2);

        return array_filter($versions, function ($version) use ($localMajorVersion) {
            list($majorVersion, ) = explode('.', $version, 2);
            return $majorVersion === $localMajorVersion;
        });
    }

        /**
     * Filter a list of versions to those that allow the current PHP version.
     *
     * @param string[] $versions
     *
     * @return string[]
     */
    private function filterByPhpVersion(array $versions)
    {
        $versionInfo = $this->getAvailableVersions();
        return array_filter($versions, function ($version) use ($versionInfo) {
            if (isset($versionInfo[$version]['php']['min'])
                && version_compare(PHP_VERSION, $versionInfo[$version]['php']['min'], '<')) {
                return false;
            } elseif (isset($versionInfo[$version]['php']['max'])
                && version_compare(PHP_VERSION, $versionInfo[$version]['php']['max'], '>')) {
                return false;
            }
            return true;
        });
    }
}


1		<?php
2		/**
3		* Humbug
4		*
5		* @category Humbug
6		* @package Humbug
7		* @copyright Copyright (c) 2017 Patrick Dawkins
8		* @license https://github.com/padraic/phar-updater/blob/master/LICENSE New BSD License
9		*
10		*/
11		namespace Humbug\SelfUpdate\Strategy;
12
13		use Humbug\SelfUpdate\Exception\HttpRequestException;
14		use Humbug\SelfUpdate\Exception\JsonParsingException;
15		use Humbug\SelfUpdate\Updater;
16		use Humbug\SelfUpdate\VersionParser;
17		use Humbug\SelfUpdate\Exception\RuntimeException;
18
19		final class ManifestStrategy implements StrategyInterface
20		{
21		const SHA256 = 'sha256';
22
23		const SHA1 = 'sha1';
24
25		const STABLE = 'stable';
26
27		const UNSTABLE = 'unstable';
28
29		const ANY = 'any';
30
31		/**
32		* @var array
33		*/
34		private $requiredKeys = array(self::SHA256, 'version', 'url');
35
36		/**
37		* @var string
38		*/
39		private $hashAlgo = self::SHA256;
40
41		/**
42		* @var string
43		*/
44		private $manifestUrl;
45
46		/**
47		* @var array
48		*/
49		private $manifest;
50
51		/**
52		* @var array
53		*/
54		private $availableVersions;
55
56		/**
57		* @var string
58		*/
59		private $localVersion;
60
61		/**
62		* @var bool
63		*/
64		private $allowMajor = false;
65
66		/**
67		* @var bool
68		*/
69		private $allowUnstable = false;
70
71		/**
72		* @var bool
73		*/
74		private $requireUnstable = false;
75
76		/**
77		* @var int
78		*/
79		private $manifestTimeout = 60;
80
81		/**
82		* @var int
83		*/
84		private $downloadTimeout = 60;
85
86		/**
87		* @var bool
88		*/
89		private $ignorePhpReq = false;
90
91		/**
92		* Set version string of the local phar
93		*
94		* @param string $version
95		*/
96		public function setCurrentLocalVersion($version)
97		{
98		$this->localVersion = $version;
99		return $this;
100		}
101
102		/**
103		* @param int $downloadTimeout
104		* @return self
105		*/
106		public function setDownloadTimeout($downloadTimeout)
107		{
108		$this->downloadTimeout = $downloadTimeout;
109		return $this;
110		}
111
112		/**
113		* @param int $manifestTimeout
114		* @return self
115		*/
116		public function setManifestTimeout($manifestTimeout)
117		{
118		$this->manifestTimeout = $manifestTimeout;
119		return $this;
120		}
121
122		public function useSha1()
123		{
124		$this->requiredKeys[0] = self::SHA1;
125		$this->hashAlgo = self::SHA1;
126		}
127
128		/**
129		* If set, ignores any restrictions based on currently running PHP version.
130		* @return self
131		*/
132		public function ignorePhpRequirements()
133		{
134		$this->ignorePhpReq = true;
135		return $this;
136		}
137
138		/**
139		* If set, ignores any restrictions based on currently running PHP version.
140		* @return self
141		*/
142		public function allowMajorVersionUpdates()
143		{
144		$this->allowMajor = true;
145		return $this;
146		}
147
148		/**
149		* Set target stability
150		*
151		* @param string $stability
152		*/
153		public function setStability($stability)
154		{
155		if ($stability !== self::STABLE && $stability !== self::UNSTABLE && $stability !== self::ANY) {
156		throw new InvalidArgumentException(
157		'Invalid stability value. Must be one of "stable", "unstable"'
158		);
159		}
160
161		switch ($stability) {
162		case self::ANY:
163		$this->allowUnstableVersionUpdates();
164		break;
165
166		case self::UNSTABLE:
167		$this->requireUnstable = true;
168		break;
169
170		default:
171		break;
172		}
173		}
174
175		/**
176		* If set, ignores any restrictions based on currently running PHP version.
177		* @return self
178		*/
179		public function allowUnstableVersionUpdates()
180		{
181		$this->allowUnstable = true;
182		return $this;
183		}
184
185		public function setManifestUrl($url)
186		{
187		$this->manifestUrl = $url;
188		return $this;
189		}
190
191		/**
192		* {@inheritdoc}
193		*/
194		public function getCurrentLocalVersion(Updater $updater)
195		{
196		return $this->localVersion;
197		}
198
199		/**
200		* {@inheritdoc}
201		*/
202		public function download(Updater $updater)
203		{
204		$version = $this->getCurrentRemoteVersion($updater);
205		if ($version === false) {
206		throw new RuntimeException('No remote versions found');
207		}
208
209		$versionInfo = $this->getAvailableVersions();
210		if (!isset($versionInfo[$version])) {
211		throw new RuntimeException(sprintf('Failed to find manifest item for version %s', $version));
212		}
213
214		$context = stream_context_create(['http' => ['timeout' => $this->downloadTimeout]]);
215		/** Switch remote request errors to HttpRequestExceptions */
216		set_error_handler(array($updater, 'throwHttpRequestException'));
217		$fileContents = file_get_contents($versionInfo[$version]['url'], false, $context);
218		restore_error_handler();
219
220		if ($fileContents === false) {
221		throw new HttpRequestException(sprintf('Failed to download file from URL: %s', $versionInfo[$version]['url']));
222		}
223
224		$tmpFilename = $updater->getTempPharFile();
225		if (file_put_contents($tmpFilename, $fileContents) === false) {
226		throw new RuntimeException(sprintf('Failed to write file: %s', $tmpFilename));
227		}
228
229		$tmpSha = hash_file($this->hashAlgo, $tmpFilename);
230		if ($tmpSha !== $versionInfo[$version][$this->hashAlgo]) {
231		unlink($tmpFilename);
232		throw new RuntimeException(
233		sprintf(
234		'%s verification failed: expected %s, actual %s',
235		strtoupper($this->hashAlgo),
236		$versionInfo[$version][$this->hashAlgo],
237		$tmpSha
238		)
239		);
240		}
241		}
242
243		/**
244		* {@inheritdoc}
245		*/
246		public function getCurrentRemoteVersion(Updater $updater)
247		{
248		$versions = array_keys($this->getAvailableVersions());
249		if (!$this->allowMajor) {
250		$versions = $this->filterByLocalMajorVersion($versions);
251		}
252		if (!$this->ignorePhpReq) {
253		$versions = $this->filterByPhpVersion($versions);
254		}
255
256		$versionParser = new VersionParser($versions);
257
258		$mostRecent = $versionParser->getMostRecentStable();
259
260		// Look for unstable updates if explicitly allowed, or if the local
261		// version is already unstable and there is no new stable version.
262		if (true === $this->requireUnstable) {
263		$mostRecent = $versionParser->getMostRecentUnstable();
264		} elseif ($this->allowUnstable \|\| ($versionParser->isUnstable($this->localVersion)
265		&& version_compare($mostRecent, $this->localVersion, '<'))) {
266		$mostRecent = $versionParser->getMostRecentAll();
267		}
268
269		return version_compare($mostRecent, $this->localVersion, '>') ? $mostRecent : false;
270		}
271
272		/**
273		* Find update/upgrade notes for the new remote version.
274		*
275		* @param Updater $updater
276		* @param bool $useBaseNote Return main note if no version specific update notes found.
277		*
278		* @return string\|false A string if notes are found, or false otherwise.
279		*/
280		public function getUpdateNotes(Updater $updater, $useBaseNote = false)
281		{
282		$versionInfo = $this->getRemoteVersionInfo($updater);
283		if (empty($versionInfo['updating'])) {
284		return false;
285		}
286		$localVersion = $this->getCurrentLocalVersion($updater);
287		$items = isset($versionInfo['updating'][0]) ? $versionInfo['updating'] : [$versionInfo['updating']];
288		foreach ($items as $updating) {
289		if (!isset($updating['notes'])) {
290		continue;
291		} elseif (isset($updating['hide from'])
292		&& version_compare($localVersion, $updating['hide from'], '>=')) {
293		continue;
294		} elseif (isset($updating['show from'])
295		&& version_compare($localVersion, $updating['show from'], '<')) {
296		continue;
297		}
298
299		return $updating['notes'];
300		}
301
302		if (true === $useBaseNote && !empty($versionInfo['notes'])) {
303		return $versionInfo['notes'];
304		}
305
306		return false;
307		}
308
309		/**
310		* Gets available versions to update to.
311		*
312		* @return array An array keyed by the version name, whose elements are arrays
313		* containing version information ('name', $this->hashAlgo, and 'url').
314		*/
315		private function getAvailableVersions()
316		{
317		if (isset($this->availableVersions)) {
318		return $this->availableVersions;
319		}
320
321		$this->availableVersions = array();
322		foreach ($this->retrieveManifest() as $key => $item) {
323		if ($missing = array_diff($this->requiredKeys, array_keys($item))) {
324		throw new RuntimeException(
325		sprintf(
326		'Manifest item %s missing required key(s): %s',
327		$key,
328		implode(',', $missing)
329		)
330		);
331		}
332		$this->availableVersions[$item['version']] = $item;
333		}
334		return $this->availableVersions;
335		}
336
337		/**
338		* Download and decode the JSON manifest file.
339		*
340		* @return array
341		*/
342		private function retrieveManifest()
343		{
344		if (isset($this->manifest)) {
345		return $this->manifest;
346		}
347
348		if (!isset($this->manifest)) {
349		$context = stream_context_create(['http' => ['timeout' => $this->manifestTimeout]]);
350		$manifestContents = file_get_contents($this->manifestUrl, false, $context);
351		if ($manifestContents === false) {
352		throw new RuntimeException(sprintf('Failed to download manifest: %s', $this->manifestUrl));
353		}
354
355		$this->manifest = json_decode($manifestContents, true, 512, JSON_OBJECT_AS_ARRAY);
		0 ignored issues – show Documentation Bug introduced 2017-05-13 22:48 UTC by Report Bug Copy Issue Report It seems like `json_decode($manifestCon..., JSON_OBJECT_AS_ARRAY)` of type `*` is incompatible with the declared type `array` of property `$manifest`. Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property. Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property.. Loading history...
356	View Code Duplication	if (json_last_error() !== JSON_ERROR_NONE) {
		0 ignored issues – show Duplication introduced 2017-05-13 22:48 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
357		throw new JsonParsingException(
358		'Error parsing manifest file'
359		. (function_exists('json_last_error_msg') ? ': ' . json_last_error_msg() : '')
360		);
361		}
362		}
363
364		return $this->manifest;
365		}
366
367		/**
368		* Get version information for the latest remote version.
369		*
370		* @param Updater $updater
371		*
372		* @return array
373		*/
374		private function getRemoteVersionInfo(Updater $updater)
375		{
376		$version = $this->getCurrentRemoteVersion($updater);
377		if ($version === false) {
378		throw new RuntimeException('No remote versions found');
379		}
380		$versionInfo = $this->getAvailableVersions();
381		if (!isset($versionInfo[$version])) {
382		throw new RuntimeException(sprintf('Failed to find manifest item for version %s', $version));
383		}
384		return $versionInfo[$version];
385		}
386
387		/**
388		* Filter a list of versions to those that match the current local version.
389		*
390		* @param string[] $versions
391		*
392		* @return string[]
393		*/
394		private function filterByLocalMajorVersion(array $versions)
395		{
396		list($localMajorVersion, ) = explode('.', $this->localVersion, 2);
397
398		return array_filter($versions, function ($version) use ($localMajorVersion) {
399		list($majorVersion, ) = explode('.', $version, 2);
400		return $majorVersion === $localMajorVersion;
401		});
402		}
403
404		/**
405		* Filter a list of versions to those that allow the current PHP version.
406		*
407		* @param string[] $versions
408		*
409		* @return string[]
410		*/
411		private function filterByPhpVersion(array $versions)
412		{
413		$versionInfo = $this->getAvailableVersions();
414		return array_filter($versions, function ($version) use ($versionInfo) {
415		if (isset($versionInfo[$version]['php']['min'])
416		&& version_compare(PHP_VERSION, $versionInfo[$version]['php']['min'], '<')) {
417		return false;
418		} elseif (isset($versionInfo[$version]['php']['max'])
419		&& version_compare(PHP_VERSION, $versionInfo[$version]['php']['max'], '>')) {
420		return false;
421		}
422		return true;
423		});
424		}
425		}
426

humbug / phar-updater

Pull Request — master (#37)

ManifestStrategy::useSha1() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like