AttachmentPathResolver::parameterToAbsolutePath() - Code Metrics - Inspection of "Moved attachment path conversion functions to own..." - Part-DB/Part-DB-symfony - Measure and Improve Code Quality continuously with Scrutinizer

Completed

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by Jan

created 2019-09-28 14:06 UTC

AttachmentPathResolver::parameterToAbsolutePath() A

↳ Parent: AttachmentPathResolver

Complexity

Conditions	5
Paths	5

Size

Total Lines	27
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	5
eloc	12
c	1
b	0
f	0
nc	5
nop	1
dl	0
loc	27
rs	9.5555

<?php
/**
 *
 * part-db version 0.1
 * Copyright (C) 2005 Christoph Lechner
 * http://www.cl-projects.de/
 *
 * part-db version 0.2+
 * Copyright (C) 2009 K. Jacobs and others (see authors.php)
 * http://code.google.com/p/part-db/
 *
 * Part-DB Version 0.4+
 * Copyright (C) 2016 - 2019 Jan Böhmer
 * https://github.com/jbtronics
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 *
 */

namespace App\Services\Attachments;


use Symfony\Component\Filesystem\Filesystem;
use Symfony\Component\HttpKernel\KernelInterface;

/**
 * This service converts the relative pathes for attachments saved in database (like %MEDIA%/img.jpg) to real pathes
 * an vice versa.
 * @package App\Services\Attachments
 */
class AttachmentPathResolver
{
    protected $project_dir;

    protected $media_path;
    protected $footprints_path;
    protected $models_path;

    protected $placeholders;
    protected $pathes;
    protected $placeholders_regex;
    protected $pathes_regex;

    /**
     * AttachmentPathResolver constructor.
     * @param string $project_dir The kernel that should be used to resolve the project dir.
     * @param string $media_path The path where uploaded attachments should be stored.
     * @param string|null $footprints_path The path where builtin attachments are stored.
     * Set to null if this ressource should be disabled.
     * @param string|null $models_path Set to null if this ressource should be disabled.
     */
    public function __construct(string $project_dir, string $media_path, ?string $footprints_path, ?string $models_path)
    {
        $this->project_dir = $project_dir;

        //Determine the path for our ressources
        $this->media_path = $this->parameterToAbsolutePath($media_path);
        /* if ($this->media_path === null) {
            throw new \RuntimeException("MediaPath is not existing/valid! This parameter is not allowed!");
        } */
        $this->footprints_path = $this->parameterToAbsolutePath($footprints_path);
        $this->models_path = $this->parameterToAbsolutePath($models_path);

        //Here we define the valid placeholders and their replacement values
        $this->placeholders = ['%MEDIA%', '%BASE%/data/media', '%FOOTPRINTS%', '%FOOTPRINTS_3D%'];
        $this->pathes = [$this->media_path, $this->media_path, $this->footprints_path, $this->models_path];

        //Remove all disabled placeholders
        foreach ($this->pathes as $key => $path) {
            if ($path === null) {
                unset($this->placeholders[$key], $this->pathes[$key]);
            }
        }

        //Create the regex arrays
        $this->placeholders_regex = $this->arrayToRegexArray($this->placeholders);
        $this->pathes_regex = $this->arrayToRegexArray($this->pathes);
    }

    /**
     * Converts a path passed by parameter from services.yaml (which can be an absolute path or relative to project dir)
     * to an absolute path. When a relative path is passed, the directory must exist or null is returned.
     * @internal
     * @param string|null $param_path The parameter value that should be converted to a absolute path
     * @return string|null
     */
    public function parameterToAbsolutePath(?string $param_path) : ?string
    {
        if ($param_path === null) {
            return null;
        }

        $fs = new Filesystem();
        //If current string is already an absolute path, then we have nothing to do
        if ($fs->isAbsolutePath($param_path)) {
            $tmp = realpath($param_path);
            //Disable ressource if path is not existing
            if ($tmp === false) {
                return null;
            }
            return $tmp;
        }

        //Otherwise prepend the project path
        $tmp = realpath($this->project_dir . DIRECTORY_SEPARATOR . $param_path);

        //If path does not exist then disable the placeholder
        if ($tmp === false) {
            return null;
        }

        //Otherwise return resolved path
        return $tmp;
    }

    /**
     * Create an array usable for preg_replace out of an array of placeholders or pathes.
     * Slashes and other chars become escaped.
     * For example: '%TEST%' becomes '/^%TEST%/'.
     * @param array $array
     * @return array
     */
    protected function arrayToRegexArray(array $array) : array
    {
        $ret = [];

        foreach ($array as $item) {
            $item = str_replace(['\\'], ['/'], $item);
            $ret[] = '/' . preg_quote($item, '/') . '/';
        }

        return $ret;
    }


    /**
     * Converts an relative placeholder filepath (with %MEDIA% or older %BASE%) to an absolute filepath on disk.
     * The directory separator is always /. Relative pathes are not realy possible (.. is striped)
     * @param string $placeholder_path The filepath with placeholder for which the real path should be determined.
     * @return string|null The absolute real path of the file, or null if the placeholder path is invalid
     */
    public function placeholderToRealPath(string $placeholder_path) : ?string
    {
        //The new attachments use %MEDIA% as placeholders, which is the directory set in media_directory
        //Older path entries are given via %BASE% which was the project root

        $count = 0;
        $placeholder_path = preg_replace($this->placeholders_regex, $this->pathes, $placeholder_path,-1,$count);

        //A valid placeholder can have only one
        if ($count !== 1) {
            return null;
        }

        //If we have now have a placeholder left, the string is invalid:
        if (preg_match('/%\w+%/', $placeholder_path)) {
            return null;
        }

        //Path is invalid if path is directory traversal
        if (strpos($placeholder_path, '..') !== false) {
            return null;
        }

        //Normalize path and remove .. (to prevent directory traversal attack)
        $placeholder_path = str_replace(['\\'], ['/'], $placeholder_path);

        return $placeholder_path;
    }

    /**
     * Converts an real absolute filepath to a placeholder version.
     * @param string $real_path The absolute path, for which the placeholder version should be generated.
     * @param bool $old_version By default the %MEDIA% placeholder is used, which is directly replaced with the
     * media directory. If set to true, the old version with %BASE% will be used, which is the project directory.
     * @return string The placeholder version of the filepath
     */
    public function realPathToPlaceholder(string $real_path, bool $old_version = false) : ?string
    {
        $count = 0;

        //Normalize path
        $real_path = str_replace('\\', '/', $real_path);

        if ($old_version) {
            //We need to remove the %MEDIA% placeholder (element 0)
            $pathes = $this->pathes_regex;
            $placeholders = $this->placeholders;
            unset($pathes[0], $placeholders[0]);
            $real_path = preg_replace($pathes, $placeholders, $real_path, -1, $count);
        } else {
            $real_path = preg_replace($this->pathes_regex, $this->placeholders, $real_path, -1, $count);
        }

        if ($count !== 1) {
            return null;
        }

        //If the new string does not begin with a placeholder, it is invalid
        if (!preg_match('/^%\w+%/', $real_path)) {
            return null;
        }

        return $real_path;
    }

    /**
     * The path where uploaded attachments is stored.
     * @return string The absolute path to the media folder.
     */
    public function getMediaPath() : string
    {
        return $this->media_path;

    }

    /**
     * The string where the builtin footprints are stored
     * @return string|null The absolute path to the footprints folder. Null if built footprints were disabled.
     */
    public function getFootprintsPath() : ?string
    {
        return $this->footprints_path;
    }

    /**
     * The string where the builtin 3D models are stored
     * @return string|null The absolute path to the models folder. Null if builtin models were disabled.
     */
    public function getModelsPath() : ?string
    {
        return $this->models_path;
    }
}

1			<?php
2			/**
3			*
4			* part-db version 0.1
5			* Copyright (C) 2005 Christoph Lechner
6			* http://www.cl-projects.de/
7			*
8			* part-db version 0.2+
9			* Copyright (C) 2009 K. Jacobs and others (see authors.php)
10			* http://code.google.com/p/part-db/
11			*
12			* Part-DB Version 0.4+
13			* Copyright (C) 2016 - 2019 Jan Böhmer
14			* https://github.com/jbtronics
15			*
16			* This program is free software; you can redistribute it and/or
17			* modify it under the terms of the GNU General Public License
18			* as published by the Free Software Foundation; either version 2
19			* of the License, or (at your option) any later version.
20			*
21			* This program is distributed in the hope that it will be useful,
22			* but WITHOUT ANY WARRANTY; without even the implied warranty of
23			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24			* GNU General Public License for more details.
25			*
26			* You should have received a copy of the GNU General Public License
27			* along with this program; if not, write to the Free Software
28			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
29			*
30			*/
31
32			namespace App\Services\Attachments;
33
34
35			use Symfony\Component\Filesystem\Filesystem;
36			use Symfony\Component\HttpKernel\KernelInterface;
37
38			/**
39			* This service converts the relative pathes for attachments saved in database (like %MEDIA%/img.jpg) to real pathes
40			* an vice versa.
41			* @package App\Services\Attachments
42			*/
43			class AttachmentPathResolver
44			{
45			protected $project_dir;
46
47			protected $media_path;
48			protected $footprints_path;
49			protected $models_path;
50
51			protected $placeholders;
52			protected $pathes;
53			protected $placeholders_regex;
54			protected $pathes_regex;
55
56			/**
57			* AttachmentPathResolver constructor.
58			* @param string $project_dir The kernel that should be used to resolve the project dir.
59			* @param string $media_path The path where uploaded attachments should be stored.
60			* @param string\|null $footprints_path The path where builtin attachments are stored.
61			* Set to null if this ressource should be disabled.
62			* @param string\|null $models_path Set to null if this ressource should be disabled.
63			*/
64			public function __construct(string $project_dir, string $media_path, ?string $footprints_path, ?string $models_path)
65			{
66			$this->project_dir = $project_dir;
67
68			//Determine the path for our ressources
69			$this->media_path = $this->parameterToAbsolutePath($media_path);
70			/* if ($this->media_path === null) {
71			throw new \RuntimeException("MediaPath is not existing/valid! This parameter is not allowed!");
72			} */
73			$this->footprints_path = $this->parameterToAbsolutePath($footprints_path);
74			$this->models_path = $this->parameterToAbsolutePath($models_path);
75
76			//Here we define the valid placeholders and their replacement values
77			$this->placeholders = ['%MEDIA%', '%BASE%/data/media', '%FOOTPRINTS%', '%FOOTPRINTS_3D%'];
78			$this->pathes = [$this->media_path, $this->media_path, $this->footprints_path, $this->models_path];
79
80			//Remove all disabled placeholders
81			foreach ($this->pathes as $key => $path) {
82			if ($path === null) {
83			unset($this->placeholders[$key], $this->pathes[$key]);
84			}
85			}
86
87			//Create the regex arrays
88			$this->placeholders_regex = $this->arrayToRegexArray($this->placeholders);
89			$this->pathes_regex = $this->arrayToRegexArray($this->pathes);
90			}
91
92			/**
93			* Converts a path passed by parameter from services.yaml (which can be an absolute path or relative to project dir)
94			* to an absolute path. When a relative path is passed, the directory must exist or null is returned.
95			* @internal
96			* @param string\|null $param_path The parameter value that should be converted to a absolute path
97			* @return string\|null
98			*/
99			public function parameterToAbsolutePath(?string $param_path) : ?string
100			{
101			if ($param_path === null) {
102			return null;
103			}
104
105			$fs = new Filesystem();
106			//If current string is already an absolute path, then we have nothing to do
107			if ($fs->isAbsolutePath($param_path)) {
108			$tmp = realpath($param_path);
109			//Disable ressource if path is not existing
110			if ($tmp === false) {
111			return null;
112			}
113			return $tmp;
114			}
115
116			//Otherwise prepend the project path
117			$tmp = realpath($this->project_dir . DIRECTORY_SEPARATOR . $param_path);
118
119			//If path does not exist then disable the placeholder
120			if ($tmp === false) {
121			return null;
122			}
123
124			//Otherwise return resolved path
125			return $tmp;
126			}
127
128			/**
129			* Create an array usable for preg_replace out of an array of placeholders or pathes.
130			* Slashes and other chars become escaped.
131			* For example: '%TEST%' becomes '/^%TEST%/'.
132			* @param array $array
133			* @return array
134			*/
135			protected function arrayToRegexArray(array $array) : array
136			{
137			$ret = [];
138
139			foreach ($array as $item) {
140			$item = str_replace(['\\'], ['/'], $item);
141			$ret[] = '/' . preg_quote($item, '/') . '/';
142			}
143
144			return $ret;
145			}
146
147
148			/**
149			* Converts an relative placeholder filepath (with %MEDIA% or older %BASE%) to an absolute filepath on disk.
150			* The directory separator is always /. Relative pathes are not realy possible (.. is striped)
151			* @param string $placeholder_path The filepath with placeholder for which the real path should be determined.
152			* @return string\|null The absolute real path of the file, or null if the placeholder path is invalid
153			*/
154			public function placeholderToRealPath(string $placeholder_path) : ?string
155			{
156			//The new attachments use %MEDIA% as placeholders, which is the directory set in media_directory
157			//Older path entries are given via %BASE% which was the project root
158
159			$count = 0;
160			$placeholder_path = preg_replace($this->placeholders_regex, $this->pathes, $placeholder_path,-1,$count);
161
162			//A valid placeholder can have only one
163			if ($count !== 1) {
164			return null;
165			}
166
167			//If we have now have a placeholder left, the string is invalid:
168			if (preg_match('/%\w+%/', $placeholder_path)) {
169			return null;
170			}
171
172			//Path is invalid if path is directory traversal
173			if (strpos($placeholder_path, '..') !== false) {
174			return null;
175			}
176
177			//Normalize path and remove .. (to prevent directory traversal attack)
178			$placeholder_path = str_replace(['\\'], ['/'], $placeholder_path);
179
180			return $placeholder_path;
181			}
182
183			/**
184			* Converts an real absolute filepath to a placeholder version.
185			* @param string $real_path The absolute path, for which the placeholder version should be generated.
186			* @param bool $old_version By default the %MEDIA% placeholder is used, which is directly replaced with the
187			* media directory. If set to true, the old version with %BASE% will be used, which is the project directory.
188			* @return string The placeholder version of the filepath
189			*/
190			public function realPathToPlaceholder(string $real_path, bool $old_version = false) : ?string
191			{
192			$count = 0;
193
194			//Normalize path
195			$real_path = str_replace('\\', '/', $real_path);
196
197			if ($old_version) {
198			//We need to remove the %MEDIA% placeholder (element 0)
199			$pathes = $this->pathes_regex;
200			$placeholders = $this->placeholders;
201			unset($pathes[0], $placeholders[0]);
202			$real_path = preg_replace($pathes, $placeholders, $real_path, -1, $count);
203			} else {
204			$real_path = preg_replace($this->pathes_regex, $this->placeholders, $real_path, -1, $count);
205			}
206
207			if ($count !== 1) {
208			return null;
209			}
210
211			//If the new string does not begin with a placeholder, it is invalid
212			if (!preg_match('/^%\w+%/', $real_path)) {
213			return null;
214			}
215
216			return $real_path;
217			}
218
219			/**
220			* The path where uploaded attachments is stored.
221			* @return string The absolute path to the media folder.
222			*/
223			public function getMediaPath() : string
224			{
225			return $this->media_path;
			0 ignored issues – show Bug Best Practice introduced 2019-09-28 14:11 UTC by Report Bug Copy Issue Report The expression `return $this->media_path` could return the type `null` which is incompatible with the type-hinted return `string`. Consider adding an additional type-check to rule them out. Loading history...
226			}
227
228			/**
229			* The string where the builtin footprints are stored
230			* @return string\|null The absolute path to the footprints folder. Null if built footprints were disabled.
231			*/
232			public function getFootprintsPath() : ?string
233			{
234			return $this->footprints_path;
235			}
236
237			/**
238			* The string where the builtin 3D models are stored
239			* @return string\|null The absolute path to the models folder. Null if builtin models were disabled.
240			*/
241			public function getModelsPath() : ?string
242			{
243			return $this->models_path;
244			}
245			}

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AttachmentPathResolver::parameterToAbsolutePath() A

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