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| 1 | <?php |
| 2 | declare(strict_types=1); |
| 3 | /** |
| 4 | * Pop PHP Framework (https://www.popphp.org/) |
| 5 | * |
| 6 | * @link https://github.com/popphp/popphp-framework |
| 7 | * @author Nick Sagona, III <nick@popphp.org> |
| 8 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 9 | * @license https://www.popphp.org/license New BSD License |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * @namespace |
| 14 | */ |
| 15 | namespace Pop\Http; |
| 16 | |
| 17 | use Pop\Mime\Part\Header; |
| 18 | use Pop\Http\Body; |
| 19 | use Psr\Http\Message\MessageInterface; |
| 20 | |
| 21 | /** |
| 22 | * Abstract HTTP request/response class |
| 23 | * |
| 24 | * Declares `implements MessageInterface` here (in addition to the concrete |
| 25 | * `implements RequestInterface`/`ResponseInterface` added to AbstractRequest/ |
| 26 | * AbstractResponse) because PHP's covariant-return check for `static` requires |
| 27 | * the class where a method is physically defined to already be provably |
| 28 | * compatible with the interface's return type; without this, PHP fatals on |
| 29 | * `withHeader()`/`withAddedHeader()`/`withoutHeader()`/`withBody()` as soon as |
| 30 | * a subclass implements MessageInterface, even though those methods' |
| 31 | * behavior already satisfies it. `getProtocolVersion()`/`withProtocolVersion()` |
| 32 | * remain unimplemented here (legal since this class stays abstract) — added by |
| 33 | * AbstractRequest/AbstractResponse per PSR-7 message methods task. |
| 34 | * |
| 35 | * @category Pop |
| 36 | * @package Pop\Http |
| 37 | * @author Nick Sagona, III <nick@popphp.org> |
| 38 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 39 | * @license https://www.popphp.org/license New BSD License |
| 40 | * @version 6.0.0 |
| 41 | */ |
| 42 | abstract class AbstractRequestResponse implements RequestResponseInterface, MessageInterface |
| 43 | { |
| 44 | |
| 45 | /** |
| 46 | * Headers |
| 47 | * @var array |
| 48 | */ |
| 49 | protected array $headers = []; |
| 50 | |
| 51 | /** |
| 52 | * Case-folded header name index (lowercase name => actual stored key), kept in sync by |
| 53 | * addHeader()/removeHeader()/setHeaders()/removeHeaders() so resolveHeaderName() - used by |
| 54 | * every PSR-7 case-insensitive lookup (getHeader()/withHeader()/withAddedHeader()/ |
| 55 | * withoutHeader()) - is an O(1) lookup instead of a linear strcasecmp() scan of every header. |
| 56 | * @var array |
| 57 | */ |
| 58 | protected array $headerIndex = []; |
| 59 | |
| 60 | /** |
| 61 | * Body |
| 62 | * @var ?Body |
| 63 | */ |
| 64 | protected ?Body $body = null; |
| 65 | |
| 66 | /** |
| 67 | * Set all headers (clear out any existing headers) |
| 68 | * |
| 69 | * @param array $headers |
| 70 | * @return AbstractRequestResponse |
| 71 | */ |
| 72 | public function setHeaders(array $headers): AbstractRequestResponse |
| 73 | { |
| 74 | $this->headers = []; |
| 75 | $this->headerIndex = []; |
| 76 | $this->addHeaders($headers); |
| 77 | |
| 78 | return $this; |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Add a header |
| 83 | * |
| 84 | * @param Header|string|int $header |
| 85 | * @param ?string $value |
| 86 | * @return AbstractRequestResponse |
| 87 | */ |
| 88 | public function addHeader(Header|string|int $header, ?string $value = null): AbstractRequestResponse |
| 89 | { |
| 90 | if ($header instanceof Header) { |
| 91 | $this->headers[$header->getName()] = $header; |
| 92 | $name = $header->getName(); |
| 93 | } else { |
| 94 | if (is_numeric($header) && str_contains($value, ':')) { |
| 95 | $header = Header::parse($value); |
| 96 | $this->headers[$header->getName()] = $header; |
| 97 | $name = $header->getName(); |
| 98 | } else { |
| 99 | $this->headers[$header] = new Header($header, $value); |
| 100 | $name = $header; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | $this->headerIndex[strtolower((string)$name)] = (string)$name; |
| 105 | |
| 106 | return $this; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Add all headers |
| 111 | * |
| 112 | * @param array $headers |
| 113 | * @return AbstractRequestResponse |
| 114 | */ |
| 115 | public function addHeaders(array $headers): AbstractRequestResponse |
| 116 | { |
| 117 | foreach ($headers as $header => $value) { |
| 118 | if ($value instanceof Header) { |
| 119 | $this->addHeader($value); |
| 120 | } else { |
| 121 | $this->addHeader($header, $value); |
| 122 | } |
| 123 | } |
| 124 | return $this; |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * Get a header |
| 129 | * |
| 130 | * @param string $name |
| 131 | * @return mixed |
| 132 | */ |
| 133 | public function getHeaderObject(string $name): mixed |
| 134 | { |
| 135 | return $this->headers[$name] ?? null; |
| 136 | } |
| 137 | |
| 138 | /** |
| 139 | * Get a header |
| 140 | * |
| 141 | * @param string $name |
| 142 | * @return mixed |
| 143 | */ |
| 144 | public function getHeaderAsString(string $name): mixed |
| 145 | { |
| 146 | return (isset($this->headers[$name])) ? (string)$this->headers[$name] : null; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Get header value |
| 151 | * |
| 152 | * @param string $name |
| 153 | * @param int $i |
| 154 | * @return mixed |
| 155 | */ |
| 156 | public function getHeaderValue(string $name, int $i = 0): mixed |
| 157 | { |
| 158 | return (isset($this->headers[$name])) ? $this->headers[$name]->getValue($i) : null; |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * Get header value as string |
| 163 | * |
| 164 | * @param string $name |
| 165 | * @param int $i |
| 166 | * @return string|null |
| 167 | */ |
| 168 | public function getHeaderValueAsString(string $name, int $i = 0): string|null |
| 169 | { |
| 170 | return (isset($this->headers[$name])) ? $this->headers[$name]->getValueAsString($i) : null; |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * Get all headers |
| 175 | * |
| 176 | * @return array |
| 177 | */ |
| 178 | public function getHeaderObjects(): array |
| 179 | { |
| 180 | return $this->headers; |
| 181 | } |
| 182 | |
| 183 | /** |
| 184 | * Resolve a header name to whatever key is actually stored, matching |
| 185 | * case-insensitively per PSR-7. Returns the input unchanged if no |
| 186 | * existing header matches. Only PSR-7-facing methods route through |
| 187 | * this - the non-PSR addHeader()/removeHeader()/hasHeader()/ |
| 188 | * getHeaderObject()/getHeaderObjects() methods keep their existing |
| 189 | * exact-match storage keying. |
| 190 | * |
| 191 | * @param string $name |
| 192 | * @return string |
| 193 | */ |
| 194 | private function resolveHeaderName(string $name): string |
| 195 | { |
| 196 | if (isset($this->headers[$name])) { |
| 197 | return $name; |
| 198 | } |
| 199 | |
| 200 | return $this->headerIndex[strtolower($name)] ?? $name; |
| 201 | } |
| 202 | |
| 203 | /** |
| 204 | * Get all string values for a header, per PSR-7 (empty array if absent, case-insensitive) |
| 205 | * |
| 206 | * @param string $name |
| 207 | * @return array |
| 208 | */ |
| 209 | public function getHeader(string $name): array |
| 210 | { |
| 211 | $name = $this->resolveHeaderName($name); |
| 212 | |
| 213 | if (!isset($this->headers[$name])) { |
| 214 | return []; |
| 215 | } |
| 216 | |
| 217 | $values = $this->headers[$name]->getValuesAsStrings(); |
| 218 | |
| 219 | return is_array($values) ? $values : [$values]; |
| 220 | } |
| 221 | |
| 222 | /** |
| 223 | * Get all headers, per PSR-7 (each header's values array-wrapped) |
| 224 | * |
| 225 | * @return array |
| 226 | */ |
| 227 | public function getHeaders(): array |
| 228 | { |
| 229 | $headers = []; |
| 230 | |
| 231 | foreach ($this->headers as $name => $header) { |
| 232 | $headers[$name] = $this->getHeader($name); |
| 233 | } |
| 234 | |
| 235 | return $headers; |
| 236 | } |
| 237 | |
| 238 | /** |
| 239 | * Get a header's values comma-joined into one string, per PSR-7 |
| 240 | * |
| 241 | * @param string $name |
| 242 | * @return string |
| 243 | */ |
| 244 | public function getHeaderLine(string $name): string |
| 245 | { |
| 246 | return implode(', ', $this->getHeader($name)); |
| 247 | } |
| 248 | |
| 249 | /** |
| 250 | * Get all header values as associative array |
| 251 | * |
| 252 | * @param bool $asStrings |
| 253 | * @return array |
| 254 | */ |
| 255 | public function getHeadersAsArray(bool $asStrings = true): array |
| 256 | { |
| 257 | $headers = []; |
| 258 | |
| 259 | foreach ($this->headers as $name => $header) { |
| 260 | if (count($header->getValues()) == 1) { |
| 261 | $headers[$name] = ($asStrings) ? $header->getValueAsString(0) : $header->getValue(0); |
| 262 | } else { |
| 263 | $headers[$name] = ($asStrings) ? $header->getValuesAsStrings() : $header->getValues(); |
| 264 | } |
| 265 | } |
| 266 | return $headers; |
| 267 | } |
| 268 | |
| 269 | /** |
| 270 | * Get all header values formatted string |
| 271 | * |
| 272 | * @param mixed $status |
| 273 | * @param string $eol |
| 274 | * @return string |
| 275 | */ |
| 276 | public function getHeadersAsString(mixed $status = null, string $eol = "\r\n"): string |
| 277 | { |
| 278 | $headers = ''; |
| 279 | |
| 280 | if (is_string($status)) { |
| 281 | $headers = $status . $eol; |
| 282 | } |
| 283 | |
| 284 | foreach ($this->headers as $header) { |
| 285 | $headers .= $header . $eol; |
| 286 | } |
| 287 | |
| 288 | return $headers; |
| 289 | } |
| 290 | |
| 291 | /** |
| 292 | * Determine if there are headers |
| 293 | * |
| 294 | * @return bool |
| 295 | */ |
| 296 | public function hasHeaders(): bool |
| 297 | { |
| 298 | return (count($this->headers) > 0); |
| 299 | } |
| 300 | |
| 301 | /** |
| 302 | * Has a header |
| 303 | * |
| 304 | * @param string $name |
| 305 | * @return bool |
| 306 | */ |
| 307 | public function hasHeader(string $name): bool |
| 308 | { |
| 309 | return (isset($this->headers[$name])); |
| 310 | } |
| 311 | |
| 312 | /** |
| 313 | * Remove a header |
| 314 | * |
| 315 | * @param string $name |
| 316 | * @return AbstractRequestResponse |
| 317 | */ |
| 318 | public function removeHeader(string $name): AbstractRequestResponse |
| 319 | { |
| 320 | if (isset($this->headers[$name])) { |
| 321 | unset($this->headers[$name]); |
| 322 | } |
| 323 | |
| 324 | $lower = strtolower($name); |
| 325 | if (isset($this->headerIndex[$lower]) && ($this->headerIndex[$lower] === $name)) { |
| 326 | unset($this->headerIndex[$lower]); |
| 327 | } |
| 328 | |
| 329 | return $this; |
| 330 | } |
| 331 | |
| 332 | /** |
| 333 | * Remove all headers |
| 334 | * |
| 335 | * @return AbstractRequestResponse |
| 336 | */ |
| 337 | public function removeHeaders(): AbstractRequestResponse |
| 338 | { |
| 339 | $this->headers = []; |
| 340 | $this->headerIndex = []; |
| 341 | return $this; |
| 342 | } |
| 343 | |
| 344 | /** |
| 345 | * Return an instance with the specified header, replacing any existing values, per PSR-7 |
| 346 | * |
| 347 | * Parameter is typed `mixed` (rather than `string|array`) only to satisfy PSR-7's |
| 348 | * untyped `MessageInterface::withHeader()` signature per PHP's LSP variance rules; |
| 349 | * the supported values remain a string or an array of strings. |
| 350 | * |
| 351 | * @param string $name |
| 352 | * @param mixed $value |
| 353 | * @return static |
| 354 | */ |
| 355 | public function withHeader(string $name, mixed $value): static |
| 356 | { |
| 357 | $name = $this->resolveHeaderName($name); |
| 358 | $clone = clone $this; |
| 359 | $clone->removeHeader($name); |
| 360 | |
| 361 | $values = is_array($value) ? $value : [$value]; |
| 362 | $clone->addHeader($name, array_shift($values)); |
| 363 | foreach ($values as $v) { |
| 364 | $clone->headers[$name]->addValue($v); |
| 365 | } |
| 366 | |
| 367 | return $clone; |
| 368 | } |
| 369 | |
| 370 | /** |
| 371 | * Return an instance with the specified header value(s) appended, per PSR-7 |
| 372 | * |
| 373 | * Parameter is typed `mixed` (rather than `string|array`) only to satisfy PSR-7's |
| 374 | * untyped `MessageInterface::withAddedHeader()` signature per PHP's LSP variance |
| 375 | * rules; the supported values remain a string or an array of strings. |
| 376 | * |
| 377 | * @param string $name |
| 378 | * @param mixed $value |
| 379 | * @return static |
| 380 | */ |
| 381 | public function withAddedHeader(string $name, mixed $value): static |
| 382 | { |
| 383 | $name = $this->resolveHeaderName($name); |
| 384 | $clone = clone $this; |
| 385 | $values = is_array($value) ? $value : [$value]; |
| 386 | |
| 387 | if ($clone->hasHeader($name)) { |
| 388 | foreach ($values as $v) { |
| 389 | $clone->headers[$name]->addValue($v); |
| 390 | } |
| 391 | } else { |
| 392 | $clone->addHeader($name, array_shift($values)); |
| 393 | foreach ($values as $v) { |
| 394 | $clone->headers[$name]->addValue($v); |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | return $clone; |
| 399 | } |
| 400 | |
| 401 | /** |
| 402 | * Return an instance without the specified header, per PSR-7 |
| 403 | * |
| 404 | * @param string $name |
| 405 | * @return static |
| 406 | */ |
| 407 | public function withoutHeader(string $name): static |
| 408 | { |
| 409 | $name = $this->resolveHeaderName($name); |
| 410 | $clone = clone $this; |
| 411 | $clone->removeHeader($name); |
| 412 | return $clone; |
| 413 | } |
| 414 | |
| 415 | /** |
| 416 | * Set the body |
| 417 | * |
| 418 | * @param string|Body $body |
| 419 | * @return AbstractRequestResponse |
| 420 | */ |
| 421 | public function setBody(string|Body $body): AbstractRequestResponse |
| 422 | { |
| 423 | $this->body = ($body instanceof Body) ? $body : new Body($body); |
| 424 | return $this; |
| 425 | } |
| 426 | |
| 427 | /** |
| 428 | * Get the body, per PSR-7 (a transient, never-stored empty Body when none is set, |
| 429 | * so hasBody() remains unaffected by calling this) |
| 430 | * |
| 431 | * @return Body |
| 432 | */ |
| 433 | public function getBody(): Body |
| 434 | { |
| 435 | return $this->body ?? new Body(); |
| 436 | } |
| 437 | |
| 438 | /** |
| 439 | * Get body content |
| 440 | * |
| 441 | * @return mixed |
| 442 | */ |
| 443 | public function getBodyContent(): mixed |
| 444 | { |
| 445 | return ($this->body !== null) ? $this->body->getContent() : null; |
| 446 | } |
| 447 | |
| 448 | /** |
| 449 | * Get body content length |
| 450 | * |
| 451 | * @param bool $mb |
| 452 | * @return int |
| 453 | */ |
| 454 | public function getBodyContentLength(bool $mb = false): int |
| 455 | { |
| 456 | if ($this->body === null) { |
| 457 | return 0; |
| 458 | } |
| 459 | return ($mb) ? mb_strlen($this->body->getContent()) : ($this->body->getSize() ?? 0); |
| 460 | } |
| 461 | |
| 462 | /** |
| 463 | * Has a body |
| 464 | * |
| 465 | * @return bool |
| 466 | */ |
| 467 | public function hasBody(): bool |
| 468 | { |
| 469 | return ($this->body !== null); |
| 470 | } |
| 471 | |
| 472 | /** |
| 473 | * Has body content |
| 474 | * |
| 475 | * @return bool |
| 476 | */ |
| 477 | public function hasBodyContent(): bool |
| 478 | { |
| 479 | return (($this->body !== null) && $this->body->hasContent()); |
| 480 | } |
| 481 | |
| 482 | /** |
| 483 | * Decode the body |
| 484 | * |
| 485 | * @param ?string $body |
| 486 | * @return Body |
| 487 | */ |
| 488 | public function decodeBodyContent(?string $body = null): Body |
| 489 | { |
| 490 | if ($body !== null) { |
| 491 | $this->setBody($body); |
| 492 | } |
| 493 | if (($this->hasHeader('Transfer-Encoding')) && (count($this->getHeaderObject('Transfer-Encoding')->getValues()) == 1) && |
| 494 | (strtolower((string)$this->getHeaderObject('Transfer-Encoding')->getValueAsString(0)) == 'chunked')) { |
| 495 | $this->body->setContent(Parser::decodeChunkedData($this->body->getContent())); |
| 496 | } |
| 497 | $contentEncoding = ($this->hasHeader('Content-Encoding') && (count($this->getHeaderObject('Content-Encoding')->getValues()) == 1)) ? |
| 498 | $this->getHeaderObject('Content-Encoding')->getValueAsString(0) : null; |
| 499 | $this->body->setContent(Parser::decodeData($this->body->getContent(), $contentEncoding)); |
| 500 | |
| 501 | return $this->body; |
| 502 | } |
| 503 | |
| 504 | /** |
| 505 | * Remove the body |
| 506 | * |
| 507 | * @return AbstractRequestResponse |
| 508 | */ |
| 509 | public function removeBody(): AbstractRequestResponse |
| 510 | { |
| 511 | $this->body = null; |
| 512 | return $this; |
| 513 | } |
| 514 | |
| 515 | /** |
| 516 | * Return an instance with the specified body, per PSR-7 |
| 517 | * |
| 518 | * @param Body|\Psr\Http\Message\StreamInterface $body |
| 519 | * @return static |
| 520 | */ |
| 521 | public function withBody(Body|\Psr\Http\Message\StreamInterface $body): static |
| 522 | { |
| 523 | $clone = clone $this; |
| 524 | $clone->body = ($body instanceof Body) ? $body : new Body((string)$body); |
| 525 | return $clone; |
| 526 | } |
| 527 | |
| 528 | /** |
| 529 | * Magic method to get either the headers or body |
| 530 | * |
| 531 | * @param string $name |
| 532 | * @return mixed |
| 533 | */ |
| 534 | public function __get(string $name): mixed |
| 535 | { |
| 536 | return match ($name) { |
| 537 | 'headers' => $this->headers, |
| 538 | 'body' => $this->body, |
| 539 | default => null, |
| 540 | }; |
| 541 | } |
| 542 | |
| 543 | /** |
| 544 | * Deep-clone headers and body so a with*() clone never shares mutable state |
| 545 | * with the instance it was cloned from |
| 546 | * |
| 547 | * @return void |
| 548 | */ |
| 549 | public function __clone(): void |
| 550 | { |
| 551 | foreach ($this->headers as $name => $header) { |
| 552 | $this->headers[$name] = clone $header; |
| 553 | } |
| 554 | |
| 555 | if ($this->body !== null) { |
| 556 | $this->body = clone $this->body; |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | } |