JwtAuthRoles::getKid() - Code Metrics - 365Werk/Laravel-JWT-Auth-Roles - Measure and Improve Code Quality continuously with Scrutinizer

JwtAuthRoles::getKid() A
last analyzed 2020-09-21 11:32 UTC

↳ Parent: JwtAuthRoles

Complexity

Conditions	4
Paths	3

Size

Total Lines	13
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
eloc	6
dl	0
loc	13
c	0
b	0
f	0
rs	10
cc	4
nc	3
nop	1

<?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)) {
            throw AuthException::auth(422, 'Malformed 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;
    }

    private static function getClaims(string $jwt): ?object
    {
        if (! Str::is('*.*.*', $jwt)) {
            throw AuthException::auth(422, 'Malformed JWT');
        }

        $claims = explode('.', $jwt);
        $claims = JWT::jsonDecode(JWT::urlsafeB64Decode($claims[1]));

        return $claims ?? null;
    }

    private static function jwkToPem(object $jwk): ?string
    {
        if (! isset($jwk->e) || ! isset($jwk->n)) {
            throw AuthException::auth(500, 'Malformed jwk');
        }

        $rsa = new RSA();
        $rsa->loadKey([
            'e' => new BigInteger(JWT::urlsafeB64Decode($jwk->e), 256),
            'n' => new BigInteger(JWT::urlsafeB64Decode($jwk->n), 256),
        ]);

        if ($rsa->getPublicKey() === false) {
            return null;
        }

        return $rsa->getPublicKey();
    }

    private static function getJwk(string $kid, string $uri): ?string
    {
        $response = Http::get($uri);
        $json = $response->getBody();
        if (! $json) {
            throw AuthException::auth(404, 'jwks endpoint not found');
        }

        $jwks = json_decode($json, false);

        if (! $jwks || ! isset($jwks->keys) || ! is_array($jwks->keys)) {
            throw AuthException::auth(404, 'No JWKs found');
        }

        foreach ($jwks->keys as $jwk) {
            if ($jwk->kid === $kid) {
                return self::jwkToPem($jwk);
            }
        }

        throw AuthException::auth(401, 'Unauthorized');
    }

    private static function getPem(string $kid, string $uri): ?string
    {
        $response = Http::get($uri);
        $json = $response->getBody();
        if (! $json) {
            throw AuthException::auth(404, 'pem endpoint not found');
        }

        $pems = json_decode($json, false);

        if (! $pems || ! isset($pems->publicKeys) || ! is_object($pems->publicKeys)) {
            throw AuthException::auth(404, 'pem not found');
        }

        foreach ($pems->publicKeys as $key=>$pem) {
            if ($key === $kid) {
                return $pem;
            }
        }

        throw AuthException::auth(401, 'Unauthorized');
    }

    private static function verifyToken(string $jwt, string $uri, bool $jwk = false): object
    {
        $kid = self::getKid($jwt);
        if (! $kid) {
            throw AuthException::auth(422, 'Malformed JWT');
        }

        $row = null;

        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) {
                JwtKey::create(['kid' => $kid, 'key' => $publicKey]);
            }
        }

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

    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 2020-09-15 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			throw AuthException::auth(422, 'Malformed JWT');
20			}
21
22			$header = JWT::jsonDecode(JWT::urlsafeB64Decode(Str::before($jwt, '.')));
23
24			if (isset($header->alg) && $header->alg !== config('jwtauthroles.alg')) {
25			throw AuthException::auth(422, 'Invalid algorithm');
26			}
27
28			return $header->kid ?? null;
29			}
30
31			private static function getClaims(string $jwt): ?object
32			{
33			if (! Str::is('..*', $jwt)) {
34			throw AuthException::auth(422, 'Malformed JWT');
35			}
36
37			$claims = explode('.', $jwt);
38			$claims = JWT::jsonDecode(JWT::urlsafeB64Decode($claims[1]));
39
40			return $claims ?? null;
41			}
42
43			private static function jwkToPem(object $jwk): ?string
44			{
45			if (! isset($jwk->e) \|\| ! isset($jwk->n)) {
46			throw AuthException::auth(500, 'Malformed jwk');
47			}
48
49			$rsa = new RSA();
50			$rsa->loadKey([
51			'e' => new BigInteger(JWT::urlsafeB64Decode($jwk->e), 256),
52			'n' => new BigInteger(JWT::urlsafeB64Decode($jwk->n), 256),
53			]);
54
55			if ($rsa->getPublicKey() === false) {
56			return null;
57			}
58
59			return $rsa->getPublicKey();
60			}
61
62			private static function getJwk(string $kid, string $uri): ?string
63			{
64			$response = Http::get($uri);
65			$json = $response->getBody();
66			if (! $json) {
67			throw AuthException::auth(404, 'jwks endpoint not found');
68			}
69
70			$jwks = json_decode($json, false);
71
72			if (! $jwks \|\| ! isset($jwks->keys) \|\| ! is_array($jwks->keys)) {
73			throw AuthException::auth(404, 'No JWKs found');
74			}
75
76			foreach ($jwks->keys as $jwk) {
77			if ($jwk->kid === $kid) {
78			return self::jwkToPem($jwk);
79			}
80			}
81
82			throw AuthException::auth(401, 'Unauthorized');
83			}
84
85			private static function getPem(string $kid, string $uri): ?string
86			{
87			$response = Http::get($uri);
88			$json = $response->getBody();
89			if (! $json) {
90			throw AuthException::auth(404, 'pem endpoint not found');
91			}
92
93			$pems = json_decode($json, false);
94
95			if (! $pems \|\| ! isset($pems->publicKeys) \|\| ! is_object($pems->publicKeys)) {
96			throw AuthException::auth(404, 'pem not found');
97			}
98
99			foreach ($pems->publicKeys as $key=>$pem) {
100			if ($key === $kid) {
101			return $pem;
102			}
103			}
104
105			throw AuthException::auth(401, 'Unauthorized');
106			}
107
108			private static function verifyToken(string $jwt, string $uri, bool $jwk = false): object
109			{
110			$kid = self::getKid($jwt);
111			if (! $kid) {
112			throw AuthException::auth(422, 'Malformed JWT');
113			}
114
115			$row = null;
116
117			if (config('jwtauthroles.cache.enabled')) {
118			if (config('jwtauthroles.cache.type') === 'database') {
119			$row = JwtKey::where('kid', $kid)
120			->orderBy('created_at', 'desc')
121			->first('key');
122			}
123			}
124
125			$publicKey = $row->key
126			?? $jwk
127			? self::getJwk($kid, $uri)
128			: self::getPem($kid, $uri);
129
130			if (! isset($publicKey) \|\| ! $publicKey) {
131			throw AuthException::auth(500, 'Unable to validate JWT');
132			}
133
134			if (config('jwtauthroles.cache.enabled')) {
135			if (config('jwtauthroles.cache.type') === 'database' && ! $row) {
136			JwtKey::create(['kid' => $kid, 'key' => $publicKey]);
137			}
138			}
139
140			return JWT::decode($jwt, $publicKey, [config('jwtauthroles.alg')]);
141			}
142
143			public static function authUser(object $request)
144			{
145			$jwt = $request->bearerToken();
146
147			$uri = config('jwtauthroles.useJwk')
148			? config('jwtauthroles.jwkUri')
149			: config('jwtauthroles.pemUri');
150
151			if (! config('jwtauthroles.validateJwt')) {
152			$claims = self::getClaims($jwt);
153			} else {
154			$claims = self::verifyToken($jwt, $uri, config('jwtauthroles.useJwk'));
155			}
156
157			if (config('jwtauthroles.useDB')) {
158			if (config('jwtauthroles.autoCreateUser')) {
159			$user = JwtUser::firstOrNew([config('jwtauthroles.userId') => $claims->sub]);
160			$user[config('jwtauthroles.userId')] = $claims->sub;
161			$user->roles = json_encode($claims->roles);
162			$user->claims = json_encode($claims);
163			$user->save();
164			} else {
165			$user = JwtUser::where(config('jwtauthroles.userId'), '=', $claims->sub)->firstOrFail();
166			$user->roles = json_encode($claims->roles);
167			$user->claims = json_encode($claims);
168			$user->save();
169			}
170			} else {
171			$user = new JwtUser;
172			$user->uuid = $claims->sub;
173			$user->roles = $claims->roles;
174			$user->claims = $claims;
175			}
176
177			return $user;
178			}
179			}
180

365Werk / Laravel-JWT-Auth-Roles

JwtAuthRoles::getKid() A last analyzed 2020-09-21 11:32 UTC

Complexity

Size

Duplication

Importance

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Filter issues like

JwtAuthRoles::getKid() A
last analyzed 2020-09-21 11:32 UTC