|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Krenor\Http2Pusher; |
|
4
|
|
|
|
|
5
|
|
|
use Illuminate\Http\Request; |
|
6
|
|
|
use Illuminate\Support\Collection; |
|
7
|
|
|
use Symfony\Component\HttpFoundation\Cookie; |
|
8
|
|
|
|
|
9
|
|
|
class Builder |
|
10
|
|
|
{ |
|
11
|
|
|
/** |
|
12
|
|
|
* The current request to read the cookie from. |
|
13
|
|
|
* |
|
14
|
|
|
* @var Request |
|
15
|
|
|
*/ |
|
16
|
|
|
protected $request; |
|
17
|
|
|
|
|
18
|
|
|
/** |
|
19
|
|
|
* Additional cookie and global pushable resources settings. |
|
20
|
|
|
* |
|
21
|
|
|
* @var array |
|
22
|
|
|
*/ |
|
23
|
|
|
protected $settings; |
|
24
|
|
|
|
|
25
|
|
|
/** |
|
26
|
|
|
* The supported extensions to push. |
|
27
|
|
|
* |
|
28
|
|
|
* @var array |
|
29
|
|
|
*/ |
|
30
|
|
|
protected $extensionTypes = [ |
|
31
|
|
|
'css' => 'style', |
|
32
|
|
|
'js' => 'script', |
|
33
|
|
|
'ttf' => 'font', |
|
34
|
|
|
'otf' => 'font', |
|
35
|
|
|
'woff' => 'font', |
|
36
|
|
|
'woff2' => 'font', |
|
37
|
|
|
'eot' => 'font', |
|
38
|
|
|
'jpeg' => 'image', |
|
39
|
|
|
'jpg' => 'image', |
|
40
|
|
|
'png' => 'image', |
|
41
|
|
|
'gif' => 'image', |
|
42
|
|
|
'bmp' => 'image', |
|
43
|
|
|
'svg' => 'image', |
|
44
|
|
|
]; |
|
45
|
|
|
|
|
46
|
|
|
/** |
|
47
|
|
|
* Builder constructor. |
|
48
|
|
|
* |
|
49
|
|
|
* @param Request $request |
|
50
|
|
|
* @param array $settings |
|
51
|
|
|
*/ |
|
52
|
16 |
|
public function __construct(Request $request, array $settings) |
|
53
|
|
|
{ |
|
54
|
16 |
|
$this->request = $request; |
|
55
|
16 |
|
$this->settings = $settings; |
|
56
|
16 |
|
} |
|
57
|
|
|
|
|
58
|
|
|
/** |
|
59
|
|
|
* Build the HTTP2 Push link and cache digest cookie. |
|
60
|
|
|
* |
|
61
|
|
|
* @see https://w3c.github.io/preload/#server-push-(http/2) |
|
62
|
|
|
* |
|
63
|
|
|
* @param array $resources |
|
64
|
|
|
* |
|
65
|
|
|
* @return Http2Push|null |
|
66
|
|
|
*/ |
|
67
|
11 |
|
public function prepare(array $resources) |
|
68
|
|
|
{ |
|
69
|
11 |
|
$supported = collect($resources) |
|
70
|
11 |
|
->merge($this->settings['global_pushes']) |
|
71
|
11 |
|
->filter(function ($resource) { |
|
72
|
11 |
|
return array_key_exists($this->extension($resource), $this->extensionTypes); |
|
73
|
11 |
|
}); |
|
74
|
|
|
|
|
75
|
11 |
|
if ($supported->count() < 1) { |
|
76
|
2 |
|
return null; |
|
77
|
|
|
} |
|
78
|
|
|
|
|
79
|
9 |
|
$transformed = $this->transform($supported); |
|
80
|
9 |
|
$cookie = $this->request->cookie($this->settings['cookie']['name']); |
|
81
|
|
|
|
|
82
|
9 |
|
$pushable = $this->pushable($transformed, $cookie); |
|
83
|
|
|
|
|
84
|
9 |
|
if ($pushable->count() < 1) { |
|
85
|
1 |
|
return null; |
|
86
|
|
|
} |
|
87
|
|
|
|
|
88
|
8 |
|
$link = $this->link($pushable); |
|
89
|
|
|
|
|
90
|
8 |
|
$cookie = new Cookie( |
|
91
|
8 |
|
$this->settings['cookie']['name'], |
|
92
|
8 |
|
$transformed->toJson(), |
|
93
|
8 |
|
strtotime("+{$this->settings['cookie']['duration']}") |
|
94
|
|
|
); |
|
95
|
|
|
|
|
96
|
8 |
|
return new Http2Push($pushable, $cookie, $link); |
|
97
|
|
|
} |
|
98
|
|
|
|
|
99
|
|
|
/** |
|
100
|
|
|
* Transform the resources to include a pushable type. |
|
101
|
|
|
* |
|
102
|
|
|
* @param Collection $collection |
|
103
|
|
|
* |
|
104
|
|
|
* @return Collection |
|
105
|
|
|
*/ |
|
106
|
|
|
private function transform(Collection $collection): Collection |
|
107
|
|
|
{ |
|
108
|
10 |
|
return $collection->map(function ($path) { |
|
109
|
10 |
|
$hash = $this->hash($path); |
|
110
|
|
|
|
|
111
|
10 |
|
$extension = $this->extension($path); |
|
112
|
|
|
|
|
113
|
10 |
|
$type = $this->extensionTypes[$extension]; |
|
114
|
|
|
|
|
115
|
10 |
|
return compact('path', 'type', 'hash'); |
|
116
|
10 |
|
}); |
|
117
|
|
|
} |
|
118
|
|
|
|
|
119
|
|
|
/** |
|
120
|
|
|
* Generate or get a hash of a file. |
|
121
|
|
|
* |
|
122
|
|
|
* @param string $path |
|
123
|
|
|
* |
|
124
|
|
|
* @return string |
|
125
|
|
|
*/ |
|
126
|
11 |
|
private function hash(string $path): string |
|
127
|
|
|
{ |
|
128
|
11 |
|
$pieces = parse_url($path); |
|
129
|
|
|
|
|
130
|
|
|
// External url |
|
131
|
11 |
|
if (isset($pieces['host'])) { |
|
132
|
4 |
|
return substr(hash_file('md5', $path), 0, 12); |
|
133
|
|
|
} |
|
134
|
|
|
|
|
135
|
|
|
// TODO: Might want to check for additional version strings other than Mixs'. |
|
136
|
11 |
|
preg_match('/id=([a-f0-9]{20})/', $path, $matches); |
|
137
|
|
|
|
|
138
|
11 |
|
if (last($matches)) { |
|
139
|
3 |
|
return substr(last($matches), 0, 12); |
|
140
|
|
|
} |
|
141
|
|
|
|
|
142
|
9 |
|
return substr(hash_file('md5', public_path($path)), 0, 12); |
|
143
|
|
|
} |
|
144
|
|
|
|
|
145
|
|
|
|
|
146
|
|
|
/** |
|
147
|
|
|
* Get the extension of a file and remove query parameters. |
|
148
|
|
|
* |
|
149
|
|
|
* @param string $path |
|
150
|
|
|
* |
|
151
|
|
|
* @return string |
|
152
|
|
|
*/ |
|
153
|
12 |
|
private function extension($path): string |
|
154
|
|
|
{ |
|
155
|
12 |
|
return strtok( |
|
156
|
12 |
|
pathinfo($path, PATHINFO_EXTENSION), |
|
157
|
12 |
|
'?' |
|
158
|
|
|
); |
|
159
|
|
|
} |
|
160
|
|
|
|
|
161
|
|
|
/** |
|
162
|
|
|
* Check which resources already are cached. |
|
163
|
|
|
* |
|
164
|
|
|
* @param Collection $collection |
|
165
|
|
|
* @param string|null $cache |
|
166
|
|
|
* |
|
167
|
|
|
* @return Collection |
|
168
|
|
|
*/ |
|
169
|
9 |
|
private function pushable(Collection $collection, $cache = null): Collection |
|
170
|
|
|
{ |
|
171
|
9 |
|
if ($cache === null) { |
|
172
|
7 |
|
return $collection; |
|
173
|
|
|
} |
|
174
|
|
|
|
|
175
|
2 |
|
if ($cache === $collection->toJson()) { |
|
176
|
1 |
|
return collect(); |
|
177
|
|
|
} |
|
178
|
|
|
|
|
179
|
1 |
|
$cached = json_decode($cache, true); |
|
180
|
|
|
|
|
181
|
1 |
|
return $collection->reject(function ($item) use ($cached) { |
|
182
|
1 |
|
return in_array($item, $cached); |
|
183
|
1 |
|
}); |
|
184
|
|
|
} |
|
185
|
|
|
|
|
186
|
|
|
/** |
|
187
|
|
|
* Create the HTTP2 Server Push link. |
|
188
|
|
|
* |
|
189
|
|
|
* @param Collection $pushable |
|
190
|
|
|
* |
|
191
|
|
|
* @return string |
|
192
|
|
|
*/ |
|
193
|
|
|
private function link(Collection $pushable): string |
|
194
|
|
|
{ |
|
195
|
8 |
|
return $pushable->map(function ($item) { |
|
196
|
8 |
|
$push = "<{$item['path']}>; rel=preload; as={$item['type']}"; |
|
197
|
|
|
|
|
198
|
8 |
|
if ($item['type'] === 'font') { |
|
199
|
4 |
|
return "{$push}; crossorigin"; |
|
200
|
|
|
} |
|
201
|
|
|
|
|
202
|
8 |
|
return $push; |
|
203
|
8 |
|
})->implode(','); |
|
204
|
|
|
} |
|
205
|
|
|
} |
|
206
|
|
|
|
krenor /
http2-pusher
