|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/* |
|
4
|
|
|
* This file is part of the Webmozart JSON package. |
|
5
|
|
|
* |
|
6
|
|
|
* (c) Bernhard Schussek <[email protected]> |
|
7
|
|
|
* |
|
8
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
9
|
|
|
* file that was distributed with this source code. |
|
10
|
|
|
*/ |
|
11
|
|
|
|
|
12
|
|
|
namespace Webmozart\Json; |
|
13
|
|
|
|
|
14
|
|
|
use JsonSchema\Exception\InvalidArgumentException; |
|
15
|
|
|
use JsonSchema\Exception\ResourceNotFoundException; |
|
16
|
|
|
use JsonSchema\RefResolver; |
|
17
|
|
|
use JsonSchema\Uri\UriResolver; |
|
18
|
|
|
use JsonSchema\Uri\UriRetriever; |
|
19
|
|
|
use JsonSchema\UriResolverInterface; |
|
20
|
|
|
use JsonSchema\Validator; |
|
21
|
|
|
use Webmozart\PathUtil\Path; |
|
22
|
|
|
|
|
23
|
|
|
/** |
|
24
|
|
|
* Validates decoded JSON values against a JSON schema. |
|
25
|
|
|
* |
|
26
|
|
|
* This class is a wrapper for {@link Validator} that adds exceptions and |
|
27
|
|
|
* validation of schema files. A few edge cases that are not handled by |
|
28
|
|
|
* {@link Validator} are handled by this class. |
|
29
|
|
|
* |
|
30
|
|
|
* @since 1.0 |
|
31
|
|
|
* |
|
32
|
|
|
* @author Bernhard Schussek <[email protected]> |
|
33
|
|
|
*/ |
|
34
|
|
|
class JsonValidator |
|
35
|
|
|
{ |
|
36
|
|
|
/** |
|
37
|
|
|
* The schema used for validating schemas. |
|
38
|
|
|
* |
|
39
|
|
|
* @var object|null |
|
40
|
|
|
*/ |
|
41
|
|
|
private $metaSchema; |
|
42
|
|
|
|
|
43
|
|
|
/** |
|
44
|
|
|
* Validator instance used for validation. |
|
45
|
|
|
* |
|
46
|
|
|
* @var Validator |
|
47
|
|
|
*/ |
|
48
|
|
|
private $validator; |
|
49
|
|
|
|
|
50
|
|
|
/** |
|
51
|
|
|
* Reference resolver. |
|
52
|
|
|
* |
|
53
|
|
|
* @var RefResolver |
|
54
|
|
|
*/ |
|
55
|
|
|
private $resolver; |
|
56
|
|
|
|
|
57
|
|
|
/** |
|
58
|
|
|
* JsonValidator constructor. |
|
59
|
|
|
* |
|
60
|
|
|
* @param Validator|null $validator JsonSchema\Validator |
|
61
|
|
|
* instance to use |
|
62
|
|
|
* @param UriRetriever|null $uriRetriever The retriever for fetching |
|
63
|
|
|
* JSON schemas |
|
64
|
|
|
* @param UriResolverInterface|null $uriResolver The resolver for URIs |
|
65
|
|
|
*/ |
|
66
|
115 |
|
public function __construct(Validator $validator = null, UriRetriever $uriRetriever = null, UriResolverInterface $uriResolver = null) |
|
67
|
|
|
{ |
|
68
|
115 |
|
$this->validator = $validator ?: new Validator(); |
|
69
|
115 |
|
$this->resolver = new RefResolver($uriRetriever ?: new UriRetriever(), $uriResolver ?: new UriResolver()); |
|
70
|
115 |
|
} |
|
71
|
|
|
|
|
72
|
|
|
/** |
|
73
|
|
|
* Validates JSON data against a schema. |
|
74
|
|
|
* |
|
75
|
|
|
* The schema may be passed as file path or as object returned from |
|
76
|
|
|
* `json_decode($schemaFile)`. |
|
77
|
|
|
* |
|
78
|
|
|
* @param mixed $data The decoded JSON data |
|
79
|
|
|
* @param string|object|null $schema The schema file or object. If `null`, |
|
80
|
|
|
* the validator will look for a `$schema` |
|
81
|
|
|
* property |
|
82
|
|
|
* |
|
83
|
|
|
* @return string[] The errors found during validation. Returns an empty |
|
84
|
|
|
* array if no errors were found |
|
85
|
|
|
* |
|
86
|
|
|
* @throws InvalidSchemaException If the schema is invalid |
|
87
|
|
|
*/ |
|
88
|
31 |
|
public function validate($data, $schema = null) |
|
89
|
|
|
{ |
|
90
|
31 |
|
if (null === $schema && isset($data->{'$schema'})) { |
|
91
|
1 |
|
$schema = $data->{'$schema'}; |
|
92
|
|
|
} |
|
93
|
|
|
|
|
94
|
31 |
|
if (is_string($schema)) { |
|
95
|
18 |
|
$schema = $this->loadSchema($schema); |
|
96
|
29 |
|
} elseif (is_object($schema)) { |
|
97
|
26 |
|
$this->assertSchemaValid($schema); |
|
98
|
|
|
} else { |
|
99
|
3 |
|
throw new InvalidSchemaException(sprintf( |
|
100
|
|
|
'The schema must be given as string, object or in the "$schema" '. |
|
101
|
3 |
|
'property of the JSON data. Got: %s', |
|
102
|
3 |
|
is_object($schema) ? get_class($schema) : gettype($schema) |
|
103
|
|
|
)); |
|
104
|
|
|
} |
|
105
|
|
|
|
|
106
|
26 |
|
$this->validator->reset(); |
|
107
|
|
|
|
|
108
|
|
|
try { |
|
109
|
26 |
|
$this->validator->check($data, $schema); |
|
110
|
1 |
|
} catch (InvalidArgumentException $e) { |
|
111
|
1 |
|
throw new InvalidSchemaException(sprintf( |
|
112
|
1 |
|
'The schema is invalid: %s', |
|
113
|
1 |
|
$e->getMessage() |
|
114
|
1 |
|
), 0, $e); |
|
115
|
|
|
} |
|
116
|
|
|
|
|
117
|
26 |
|
$errors = array(); |
|
118
|
|
|
|
|
119
|
26 |
|
if (!$this->validator->isValid()) { |
|
120
|
15 |
|
$errors = (array) $this->validator->getErrors(); |
|
121
|
|
|
|
|
122
|
15 |
|
foreach ($errors as $key => $error) { |
|
123
|
15 |
|
$prefix = $error['property'] ? $error['property'].': ' : ''; |
|
124
|
15 |
|
$errors[$key] = $prefix.$error['message']; |
|
125
|
|
|
} |
|
126
|
|
|
} |
|
127
|
|
|
|
|
128
|
26 |
|
return $errors; |
|
129
|
|
|
} |
|
130
|
|
|
|
|
131
|
26 |
|
private function assertSchemaValid($schema) |
|
132
|
|
|
{ |
|
133
|
26 |
|
if (null === $this->metaSchema) { |
|
134
|
|
|
// The meta schema is obviously not validated. If we |
|
135
|
|
|
// validate it against itself, we have an endless recursion |
|
136
|
26 |
|
$this->metaSchema = json_decode(file_get_contents(__DIR__.'/../res/meta-schema.json')); |
|
137
|
|
|
} |
|
138
|
|
|
|
|
139
|
26 |
|
if ($schema === $this->metaSchema) { |
|
140
|
26 |
|
return; |
|
141
|
|
|
} |
|
142
|
|
|
|
|
143
|
26 |
|
$errors = $this->validate($schema, $this->metaSchema); |
|
144
|
|
|
|
|
145
|
26 |
|
if (count($errors) > 0) { |
|
146
|
3 |
|
throw new InvalidSchemaException(sprintf( |
|
147
|
3 |
|
"The schema is invalid:\n%s", |
|
148
|
3 |
|
implode("\n", $errors) |
|
149
|
|
|
)); |
|
150
|
|
|
} |
|
151
|
23 |
|
} |
|
152
|
|
|
|
|
153
|
18 |
|
private function loadSchema($file) |
|
154
|
|
|
{ |
|
155
|
|
|
// Retrieve schema and cache in UriRetriever |
|
156
|
18 |
|
$file = Path::canonicalize($file); |
|
157
|
|
|
|
|
158
|
|
|
// Add file:// scheme if necessary |
|
159
|
18 |
|
if (false === strpos($file, '://')) { |
|
160
|
16 |
|
$file = 'file://'.$file; |
|
161
|
|
|
} |
|
162
|
|
|
|
|
163
|
|
|
// Resolve references to other schemas |
|
164
|
|
|
try { |
|
165
|
18 |
|
$schema = $this->resolver->resolve($file); |
|
166
|
2 |
|
} catch (ResourceNotFoundException $e) { |
|
167
|
2 |
|
throw new InvalidSchemaException(sprintf( |
|
168
|
2 |
|
'The schema %s does not exist.', |
|
169
|
|
|
$file |
|
170
|
2 |
|
), 0, $e); |
|
171
|
|
|
} |
|
172
|
|
|
|
|
173
|
|
|
try { |
|
174
|
16 |
|
$this->assertSchemaValid($schema); |
|
175
|
2 |
|
} catch (InvalidSchemaException $e) { |
|
176
|
2 |
|
throw new InvalidSchemaException(sprintf( |
|
177
|
2 |
|
'An error occurred while loading the schema %s: %s', |
|
178
|
|
|
$file, |
|
179
|
2 |
|
$e->getMessage() |
|
180
|
2 |
|
), 0, $e); |
|
181
|
|
|
} |
|
182
|
|
|
|
|
183
|
14 |
|
return $schema; |
|
184
|
|
|
} |
|
185
|
|
|
} |
|
186
|
|
|
|
webmozart /
json
