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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Cosray\Icons; |
| 6 | |
| 7 | use Closure; |
| 8 | use Cosray\Config; |
| 9 | use Cosray\Contract; |
| 10 | |
| 11 | final class Iconify implements Contract\Icons |
| 12 | { |
| 13 | /** @var Closure(string, int, string): ?string */ |
| 14 | private readonly Closure $fetch; |
| 15 | |
| 16 | public function __construct( |
| 17 | private readonly Config $config, |
| 18 | ?callable $fetch = null, |
| 19 | ) { |
| 20 | $this->fetch = $fetch === null |
| 21 | ? Closure::fromCallable([$this, 'request']) |
| 22 | : Closure::fromCallable($fetch); |
| 23 | } |
| 24 | |
| 25 | /** @param array<array-key, mixed> $args */ |
| 26 | public function icon(string $id, array $args = []): string |
| 27 | { |
| 28 | $parts = $this->split($id); |
| 29 | |
| 30 | if ($parts === null) { |
| 31 | return ''; |
| 32 | } |
| 33 | |
| 34 | $svg = $this->loadSvg($id, $parts['prefix'], $parts['name'], $args); |
| 35 | |
| 36 | return $svg ?? ''; |
| 37 | } |
| 38 | |
| 39 | /** |
| 40 | * @return array{prefix: string, name: string}|null |
| 41 | */ |
| 42 | private function split(string $id): ?array |
| 43 | { |
| 44 | $id = trim($id); |
| 45 | |
| 46 | if (!preg_match( |
| 47 | '/^(?<prefix>[a-z0-9]+(?:[-_][a-z0-9]+)*):(?<name>[a-z0-9]+(?:[-_][a-z0-9]+)*)$/i', |
| 48 | $id, |
| 49 | $matches, |
| 50 | )) { |
| 51 | return null; |
| 52 | } |
| 53 | |
| 54 | $prefix = strtolower((string) $matches['prefix']); |
| 55 | $name = strtolower((string) $matches['name']); |
| 56 | |
| 57 | if ($prefix === '' || $name === '') { |
| 58 | return null; |
| 59 | } |
| 60 | |
| 61 | return ['prefix' => $prefix, 'name' => $name]; |
| 62 | } |
| 63 | |
| 64 | /** @param array<array-key, mixed> $args */ |
| 65 | private function loadSvg(string $id, string $prefix, string $name, array $args): ?string |
| 66 | { |
| 67 | $file = $this->cacheFile($id, $args); |
| 68 | |
| 69 | if ($file !== null && is_file($file)) { |
| 70 | $cached = file_get_contents($file); |
| 71 | |
| 72 | if (is_string($cached) && $this->isSvg($cached)) { |
| 73 | return $cached; |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | $url = $this->iconUrl($prefix, $name, $args); |
| 78 | $iconify = $this->config->icons->iconify; |
| 79 | $svg = ($this->fetch)($url, $iconify->timeout, $iconify->userAgent); |
| 80 | |
| 81 | if (!is_string($svg) || !$this->isSvg($svg)) { |
| 82 | return null; |
| 83 | } |
| 84 | |
| 85 | if ($file !== null) { |
| 86 | $this->store($file, $svg); |
| 87 | } |
| 88 | |
| 89 | return $svg; |
| 90 | } |
| 91 | |
| 92 | /** @param array<array-key, mixed> $args */ |
| 93 | private function iconUrl(string $prefix, string $name, array $args): string |
| 94 | { |
| 95 | $base = rtrim($this->config->icons->iconify->baseUrl, '/'); |
| 96 | $url = sprintf('%s/%s/%s.svg', $base, rawurlencode($prefix), rawurlencode($name)); |
| 97 | $query = $this->query($args); |
| 98 | |
| 99 | return $query === '' ? $url : $url . '?' . $query; |
| 100 | } |
| 101 | |
| 102 | /** @param array<array-key, mixed> $args */ |
| 103 | private function query(array $args): string |
| 104 | { |
| 105 | $args = $this->queryArgs($args); |
| 106 | |
| 107 | if ($args === []) { |
| 108 | return ''; |
| 109 | } |
| 110 | |
| 111 | return http_build_query($args, '', '&', PHP_QUERY_RFC3986); |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * @param array<array-key, mixed> $args |
| 116 | * @return array<array-key, mixed> |
| 117 | */ |
| 118 | private function queryArgs(array $args): array |
| 119 | { |
| 120 | $query = []; |
| 121 | |
| 122 | foreach ($args as $key => $value) { |
| 123 | $value = $this->queryValue($value); |
| 124 | |
| 125 | if ($value !== null) { |
| 126 | $query[$key] = $value; |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | if (!array_is_list($query)) { |
| 131 | ksort($query, SORT_STRING); |
| 132 | } |
| 133 | |
| 134 | return $query; |
| 135 | } |
| 136 | |
| 137 | /** @return scalar|array<array-key, mixed>|null */ |
| 138 | private function queryValue(mixed $value): mixed |
| 139 | { |
| 140 | if (is_scalar($value)) { |
| 141 | return $value; |
| 142 | } |
| 143 | |
| 144 | if (is_array($value)) { |
| 145 | return $this->queryArgs($value); |
| 146 | } |
| 147 | |
| 148 | return null; |
| 149 | } |
| 150 | |
| 151 | private function request(string $url, int $timeout, string $userAgent): ?string |
| 152 | { |
| 153 | $handle = curl_init($url); |
| 154 | |
| 155 | if ($handle === false) { |
| 156 | return null; |
| 157 | } |
| 158 | |
| 159 | curl_setopt_array($handle, [ |
| 160 | CURLOPT_RETURNTRANSFER => true, |
| 161 | CURLOPT_CONNECTTIMEOUT => $timeout, |
| 162 | CURLOPT_TIMEOUT => $timeout, |
| 163 | CURLOPT_FOLLOWLOCATION => true, |
| 164 | CURLOPT_USERAGENT => $userAgent, |
| 165 | CURLOPT_HTTPHEADER => ['Accept: image/svg+xml,text/plain;q=0.9,*/*;q=0.1'], |
| 166 | ]); |
| 167 | $body = curl_exec($handle); |
| 168 | $status = (int) curl_getinfo($handle, CURLINFO_RESPONSE_CODE); |
| 169 | $error = curl_errno($handle); |
| 170 | |
| 171 | if (!is_string($body) || $error !== 0 || $status < 200 || $status >= 300) { |
| 172 | return null; |
| 173 | } |
| 174 | |
| 175 | return $body; |
| 176 | } |
| 177 | |
| 178 | /** @param array<array-key, mixed> $args */ |
| 179 | private function cacheFile(string $id, array $args): ?string |
| 180 | { |
| 181 | $dir = $this->cacheDir(); |
| 182 | |
| 183 | if ($dir === null) { |
| 184 | return null; |
| 185 | } |
| 186 | |
| 187 | $query = $this->query($args); |
| 188 | $cacheId = $query === '' ? $id : $id . '?' . $query; |
| 189 | |
| 190 | return $dir . DIRECTORY_SEPARATOR . hash('xxh3', $cacheId) . '.svg'; |
| 191 | } |
| 192 | |
| 193 | private function cacheDir(): ?string |
| 194 | { |
| 195 | $publicDir = realpath($this->config->path->public); |
| 196 | |
| 197 | if ($publicDir === false) { |
| 198 | return null; |
| 199 | } |
| 200 | |
| 201 | $cacheDir = $this->config->path->cache; |
| 202 | |
| 203 | if ($cacheDir === '' || str_contains(str_replace('\\', '/', $cacheDir), '..')) { |
| 204 | return null; |
| 205 | } |
| 206 | |
| 207 | $target = |
| 208 | rtrim($publicDir, '\\/') |
| 209 | . DIRECTORY_SEPARATOR |
| 210 | . ltrim($cacheDir, '\\/') |
| 211 | . DIRECTORY_SEPARATOR |
| 212 | . 'icons'; |
| 213 | |
| 214 | if (!is_dir($target) && !mkdir($target, 0o755, true) && !is_dir($target)) { |
| 215 | return null; |
| 216 | } |
| 217 | |
| 218 | $resolved = realpath($target); |
| 219 | |
| 220 | if ($resolved === false || strncmp($resolved, $publicDir, strlen($publicDir)) !== 0) { |
| 221 | return null; |
| 222 | } |
| 223 | |
| 224 | return $resolved; |
| 225 | } |
| 226 | |
| 227 | private function store(string $file, string $svg): void |
| 228 | { |
| 229 | $temp = $file . '.tmp.' . bin2hex(random_bytes(6)); |
| 230 | |
| 231 | if (file_put_contents($temp, $svg, LOCK_EX) === false) { |
| 232 | unlink($temp); |
| 233 | return; |
| 234 | } |
| 235 | |
| 236 | if (!rename($temp, $file)) { |
| 237 | if (is_file($temp)) { |
| 238 | unlink($temp); |
| 239 | } |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | private function isSvg(string $svg): bool |
| 244 | { |
| 245 | return str_starts_with(ltrim($svg), '<svg'); |
| 246 | } |
| 247 | } |