JwtAuthRoles::jwkToPem() - Code Metrics - Inspection of "0.2.0" - 365Werk/Laravel-JWT-Auth-Roles - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( 3e5b57...979fc2 )

by Hergen

created 2020-09-15 11:24 UTC

JwtAuthRoles::jwkToPem() A

↳ Parent: JwtAuthRoles

Complexity

Conditions	3
Paths	2

Size

Total Lines	12
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	3
eloc	7
c	1
b	0
f	0
nc	2
nop	1
dl	0
loc	12
rs	10

<?php

namespace werk365\JwtAuthRoles;

use Firebase\JWT\JWT;
use Illuminate\Support\Facades\Http;
filter:
    dependency_paths: ["lib/*"]
use Illuminate\Support\Str;
use phpseclib\Crypt\RSA;
use phpseclib\Math\BigInteger;
use werk365\jwtauthroles\Exceptions\AuthException;
use werk365\jwtauthroles\Models\JwtKey;
use werk365\jwtauthroles\Models\JwtUser;

class JwtAuthRoles
{
    private static function getKid(string $jwt): ?string
    {
        if (Str::is('*.*.*', $jwt)) {
            $header = JWT::jsonDecode(JWT::urlsafeB64Decode(Str::before($jwt, '.')));
            if (isset($header->alg) && $header->alg !== config('jwtauthroles.alg')) {
                throw AuthException::auth(422, 'Invalid algorithm');
            }

            return $header->kid ?? null;
        } else {
            throw AuthException::auth(422, 'Malformed JWT');
        }
    }

    private static function getClaims(string $jwt): ?object
    {
        if (Str::is('*.*.*', $jwt)) {
            $claims = explode('.', $jwt);
            $claims = JWT::jsonDecode(JWT::urlsafeB64Decode($claims[1]));

            return $claims ?? null;
        } else {
            throw AuthException::auth(422, 'Malformed JWT');
        }
    }

    /**
     * @param object $jwk
     * @return bool|string|null
     */
    private static function jwkToPem(object $jwk)
    {
        if (isset($jwk->e) && isset($jwk->n)) {
            $rsa = new RSA();
            $rsa->loadKey([
                'e' => new BigInteger(JWT::urlsafeB64Decode($jwk->e), 256),
                'n' => new BigInteger(JWT::urlsafeB64Decode($jwk->n), 256),
            ]);

            return $rsa->getPublicKey();
        }
        throw AuthException::auth(500, 'Malformed jwk');
    }

    /**
     * @param string $kid
     * @param string $uri
     * @return bool|string|null
     */
    private static function getJwk(string $kid, string $uri)
    {
        $response = Http::get($uri);
        $json = $response->getBody();
        if ($json) {
            $jwks = json_decode($json, false);
            if ($jwks && isset($jwks->keys) && is_array($jwks->keys)) {
                foreach ($jwks->keys as $jwk) {
                    if ($jwk->kid === $kid) {
                        return self::jwkToPem($jwk);
                    }
                }
            }
        }
        throw AuthException::auth(404, 'jwks endpoint not found');
    }

    private static function getPem(string $kid, string $uri): ?string
    {
        $response = Http::get($uri);
        $json = $response->getBody();
        if ($json) {
            $pems = json_decode($json, false);
            if ($pems && isset($pems->publicKeys) && is_object($pems->publicKeys)) {
                foreach ($pems->publicKeys as $key=>$pem) {
                    if ($key === $kid) {
                        return $pem;
                    }
                }
            }
        }
        throw AuthException::auth(404, 'pem endpoint not found');
    }

    private static function verifyToken(string $jwt, string $uri, bool $jwk = false): object
    {
        $kid = self::getKid($jwt);
        if (! $kid) {
            throw AuthException::auth(422, 'Malformed JWT');
        }
        if (config('jwtauthroles.cache.enabled')) {
            if (config('jwtauthroles.cache.type') === 'database') {
                $row = JwtKey::where('kid', $kid)
                    ->orderBy('created_at', 'desc')
                    ->first('key');
            }
        }

        $publicKey = $row->key

            ?? $jwk
                ? self::getJwk($kid, $uri)
                : self::getPem($kid, $uri);

        if (! isset($publicKey) || ! $publicKey) {
            throw AuthException::auth(500, 'Unable to validate JWT');
        }

        if (config('jwtauthroles.cache.enabled')) {
            if (config('jwtauthroles.cache.type') === 'database') {
                $row = $row ?? JwtKey::create(['kid' => $kid, 'key' => $publicKey]);

            }
        }

        return JWT::decode($jwt, $publicKey, [config('jwtauthroles.alg')]);
    }

    /** @return mixed */
    public static function authUser(object $request)
    {
        $jwt = $request->bearerToken();

        $uri = config('jwtauthroles.useJwk')
            ? config('jwtauthroles.jwkUri')
            : config('jwtauthroles.pemUri');

        if (! config('jwtauthroles.validateJwt')) {
            $claims = self::getClaims($jwt);
        } else {
            $claims = self::verifyToken($jwt, $uri, config('jwtauthroles.useJwk'));
        }

        if(config('jwtauthroles.useDB')) {
            if (config('jwtauthroles.autoCreateUser')) {
                $user = JwtUser::firstOrNew([config('jwtauthroles.userId') => $claims->sub]);
                $user[config('jwtauthroles.userId')] = $claims->sub;
                $user->roles = json_encode($claims->roles);
                $user->claims = json_encode($claims);
                $user->save();
            } else {
                $user = JwtUser::where(config('jwtauthroles.userId'), '=', $claims->sub)->firstOrFail();
                $user->roles = json_encode($claims->roles);
                $user->claims = json_encode($claims);
                $user->save();
            }
        } else {
            $user = new JwtUser();
            $user->uuid = $claims->sub;
            $user->roles = $claims->roles;
            $user->claims = $claims;
        }

        return $user;
    }
}


1			<?php
2
3			namespace werk365\JwtAuthRoles;
4
5			use Firebase\JWT\JWT;
6			use Illuminate\Support\Facades\Http;
			0 ignored issues – show Bug introduced 2020-07-13 11:11 UTC by Report Bug Copy Issue Report The type `Illuminate\Support\Facades\Http` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history... Bug introduced 2020-09-15 11:29 UTC by Report Bug Copy Issue Report The type `Illuminate\Support\Facades\Http` was not found. Maybe you did not declare it correctly or list all dependencies? The issue could also be caused by a filter entry in the build configuration. If the path has been excluded in your configuration, e.g. `excluded_paths: ["lib/"]`, you can move it to the dependency path list as follows: filter: dependency_paths: ["lib/"] For further information see https://scrutinizer-ci.com/docs/tools/php/php-scrutinizer/#list-dependency-paths Loading history...
7			use Illuminate\Support\Str;
8			use phpseclib\Crypt\RSA;
9			use phpseclib\Math\BigInteger;
10			use werk365\jwtauthroles\Exceptions\AuthException;
11			use werk365\jwtauthroles\Models\JwtKey;
12			use werk365\jwtauthroles\Models\JwtUser;
13
14			class JwtAuthRoles
15			{
16			private static function getKid(string $jwt): ?string
17			{
18			if (Str::is('..*', $jwt)) {
19			$header = JWT::jsonDecode(JWT::urlsafeB64Decode(Str::before($jwt, '.')));
20			if (isset($header->alg) && $header->alg !== config('jwtauthroles.alg')) {
21			throw AuthException::auth(422, 'Invalid algorithm');
22			}
23
24			return $header->kid ?? null;
25			} else {
26			throw AuthException::auth(422, 'Malformed JWT');
27			}
28			}
29
30			private static function getClaims(string $jwt): ?object
31			{
32			if (Str::is('..*', $jwt)) {
33			$claims = explode('.', $jwt);
34			$claims = JWT::jsonDecode(JWT::urlsafeB64Decode($claims[1]));
35
36			return $claims ?? null;
37			} else {
38			throw AuthException::auth(422, 'Malformed JWT');
39			}
40			}
41
42			/**
43			* @param object $jwk
44			* @return bool\|string\|null
45			*/
46			private static function jwkToPem(object $jwk)
47			{
48			if (isset($jwk->e) && isset($jwk->n)) {
49			$rsa = new RSA();
50			$rsa->loadKey([
51			'e' => new BigInteger(JWT::urlsafeB64Decode($jwk->e), 256),
52			'n' => new BigInteger(JWT::urlsafeB64Decode($jwk->n), 256),
53			]);
54
55			return $rsa->getPublicKey();
56			}
57			throw AuthException::auth(500, 'Malformed jwk');
58			}
59
60			/**
61			* @param string $kid
62			* @param string $uri
63			* @return bool\|string\|null
64			*/
65			private static function getJwk(string $kid, string $uri)
66			{
67			$response = Http::get($uri);
68			$json = $response->getBody();
69			if ($json) {
70			$jwks = json_decode($json, false);
71			if ($jwks && isset($jwks->keys) && is_array($jwks->keys)) {
72			foreach ($jwks->keys as $jwk) {
73			if ($jwk->kid === $kid) {
74			return self::jwkToPem($jwk);
75			}
76			}
77			}
78			}
79			throw AuthException::auth(404, 'jwks endpoint not found');
80			}
81
82			private static function getPem(string $kid, string $uri): ?string
83			{
84			$response = Http::get($uri);
85			$json = $response->getBody();
86			if ($json) {
87			$pems = json_decode($json, false);
88			if ($pems && isset($pems->publicKeys) && is_object($pems->publicKeys)) {
89			foreach ($pems->publicKeys as $key=>$pem) {
90			if ($key === $kid) {
91			return $pem;
92			}
93			}
94			}
95			}
96			throw AuthException::auth(404, 'pem endpoint not found');
97			}
98
99			private static function verifyToken(string $jwt, string $uri, bool $jwk = false): object
100			{
101			$kid = self::getKid($jwt);
102			if (! $kid) {
103			throw AuthException::auth(422, 'Malformed JWT');
104			}
105			if (config('jwtauthroles.cache.enabled')) {
106			if (config('jwtauthroles.cache.type') === 'database') {
107			$row = JwtKey::where('kid', $kid)
108			->orderBy('created_at', 'desc')
109			->first('key');
110			}
111			}
112
113			$publicKey = $row->key
			0 ignored issues – show Comprehensibility Best Practice introduced 2020-09-14 11:44 UTC by Report Bug Copy Issue Report The variable `$row` does not seem to be defined for all execution paths leading up to this point. Loading history... Comprehensibility Best Practice introduced 2020-09-15 11:29 UTC by Report Bug Copy Issue Report The variable `$row` does not seem to be defined for all execution paths leading up to this point. Loading history...
114			?? $jwk
115			? self::getJwk($kid, $uri)
116			: self::getPem($kid, $uri);
117
118			if (! isset($publicKey) \|\| ! $publicKey) {
119			throw AuthException::auth(500, 'Unable to validate JWT');
120			}
121
122			if (config('jwtauthroles.cache.enabled')) {
123			if (config('jwtauthroles.cache.type') === 'database') {
124			$row = $row ?? JwtKey::create(['kid' => $kid, 'key' => $publicKey]);
			0 ignored issues – show Unused Code introduced 2020-07-13 11:11 UTC by Report Bug Copy Issue Report The assignment to `$row` is dead and can be removed. Loading history... Unused Code introduced 2020-09-15 11:29 UTC by Report Bug Copy Issue Report The assignment to `$row` is dead and can be removed. Loading history...
125			}
126			}
127
128			return JWT::decode($jwt, $publicKey, [config('jwtauthroles.alg')]);
129			}
130
131			/** @return mixed */
132			public static function authUser(object $request)
133			{
134			$jwt = $request->bearerToken();
135
136			$uri = config('jwtauthroles.useJwk')
137			? config('jwtauthroles.jwkUri')
138			: config('jwtauthroles.pemUri');
139
140			if (! config('jwtauthroles.validateJwt')) {
141			$claims = self::getClaims($jwt);
142			} else {
143			$claims = self::verifyToken($jwt, $uri, config('jwtauthroles.useJwk'));
144			}
145
146			if(config('jwtauthroles.useDB')) {
147			if (config('jwtauthroles.autoCreateUser')) {
148			$user = JwtUser::firstOrNew([config('jwtauthroles.userId') => $claims->sub]);
149			$user[config('jwtauthroles.userId')] = $claims->sub;
150			$user->roles = json_encode($claims->roles);
151			$user->claims = json_encode($claims);
152			$user->save();
153			} else {
154			$user = JwtUser::where(config('jwtauthroles.userId'), '=', $claims->sub)->firstOrFail();
155			$user->roles = json_encode($claims->roles);
156			$user->claims = json_encode($claims);
157			$user->save();
158			}
159			} else {
160			$user = new JwtUser();
161			$user->uuid = $claims->sub;
162			$user->roles = $claims->roles;
163			$user->claims = $claims;
164			}
165
166			return $user;
167			}
168			}
169

365Werk / Laravel-JWT-Auth-Roles

Push — master ( 3e5b57...979fc2 )

JwtAuthRoles::jwkToPem() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like