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1 == HTTP Class Technical Documentation == 1 {{toc numerate=1}}
2 2
3 === Overview === 3 === Overview ===
4 4
40 ---- 40 ----
41 === Constructor === 41 === Constructor ===
42 42
43 %%php 43 %%(hl php)
44 public function __construct(&$db) 44 public function __construct(&$db)
45 %% 45 %%
46 46
58   6. Enforces TLS session upgrade if needed 58   6. Enforces TLS session upgrade if needed
59 59
60 **Example:** 60 **Example:**
61 %%php 61 %%(hl php)
62 $http = new Http($db); 62 $http = new Http($db);
63 %% 63 %%
64 64
82   - Recovers diagnostic logs from previous session 82   - Recovers diagnostic logs from previous session
83 83
84 **Example:** 84 **Example:**
85 %%php 85 %%(hl php)
86 $http->session(0); // Normal session 86 $http->session(0); // Normal session
87 $http->session(2); // Static file serving mode 87 $http->session(2); // Static file serving mode
88 %% 88 %%
105   - ✅ Only cached for anonymous users (no logged-in users) 105   - ✅ Only cached for anonymous users (no logged-in users)
106 106
107 **Example:** 107 **Example:**
108 %%php 108 %%(hl php)
109 $http->check_cache('HomePage', 'show'); 109 $http->check_cache('HomePage', 'show');
110 %% 110 %%
111 111
112 ---- 112 ----
113 113
114 ===== ##store_cache(): void## ===== 114 =====##store_cache(): void##=====
115 Saves the generated page content to cache file. 115 Saves the generated page content to cache file.
116 116
117 **Features:** 117 **Features:**
121   - Only executes if caching flag is set and user is anonymous 121   - Only executes if caching flag is set and user is anonymous
122 122
123 **Example:** 123 **Example:**
124 %%php 124 %%(hl php)
125 // Called at end of page rendering 125 // Called at end of page rendering
126 $http->store_cache(); 126 $http->store_cache();
127 %% 127 %%
144   4. Returns count of invalidated caches 144   4. Returns count of invalidated caches
145 145
146 **Example:** 146 **Example:**
147 %%php 147 %%(hl php)
148 $count = $http->invalidate_page('HomePage'); 148 $count = $http->invalidate_page('HomePage');
149 echo "Invalidated $count cache entries"; 149 echo "Invalidated $count cache entries";
150 %% 150 %%
162   - Called when TLS session is detected 162   - Called when TLS session is detected
163 163
164 **Example:** 164 **Example:**
165 %%php 165 %%(hl php)
166 $http->secure_base_url(); 166 $http->secure_base_url();
167 // $db->base_url now uses https:// 167 // $db->base_url now uses https://
168 %% 168 %%
181   - Converts relative URLs using current server name 181   - Converts relative URLs using current server name
182 182
183 **Example:** 183 **Example:**
184 %%php 184 %%(hl php)
185 $http->ensure_tls('/secure/payment'); 185 $http->ensure_tls('/secure/payment');
186 %% 186 %%
187 187
209   - ##reverse_proxy_header## - Custom header name (default: ##X-Forwarded-For##) 209   - ##reverse_proxy_header## - Custom header name (default: ##X-Forwarded-For##)
210 210
211 **Example:** 211 **Example:**
212 %%php 212 %%(hl php)
213 $client_ip = $http->ip; // e.g., "203.0.113.42" 213 $client_ip = $http->ip; // e.g., "203.0.113.42"
214 %% 214 %%
215 215
231 231
232 ==== Security Headers ==== 232 ==== Security Headers ====
233 233
234 ===== ##http_security_headers(): void## ===== 234 =====##http_security_headers(): void##=====
235 235
236 236 Sets security-related HTTP headers.
    237
    238 **Headers Set:**
    239
    240 #|
    241 *| Header | Purpose | Config Key |*
    242 || Content-Security-Policy | XSS/injection protection | ##csp## ||
    243 || Permissions-Policy | Control browser features | ##permissions_policy## ||
    244 || Referrer-Policy | Control referrer information | ##referrer_policy## ||
    245 || Strict-Transport-Security | Force HTTPS | Auto (TLS only) ||
    246 || X-Frame-Options | Clickjacking protection | Hardcoded: ##SAMEORIGIN## ||
    247 || X-Content-Type-Options | MIME sniffing prevention | Hardcoded: ##nosniff## ||
    248 |#
    249
    250 **CSP Configuration Options:**
    251   - ##0## - Disabled
    252   - ##1## - Default policy (from ##csp.conf##)
    253   - ##2## - Custom policy (from ##csp_custom.conf##)
    254
    255 **Example:**
    256 %%(hl php)
    257 $http->http_security_headers();
    258 %%
    259
    260 ----
237 ==== HTTP Methods ==== 261 ==== HTTP Methods ====
238 262
239 ===== ##redirect($url, $permanent = false): void## ===== 263 ===== ##redirect($url, $permanent = false): void## =====
249   - Uses output buffering to work anywhere in page processing 273   - Uses output buffering to work anywhere in page processing
250 274
251 **Example:** 275 **Example:**
252 %%php 276 %%(hl php)
253 $http->redirect('http://example.com/new-page', true); // 301 277 $http->redirect('http://example.com/new-page', true); // 301
254 $http->redirect('/wiki/HomePage'); // 302 278 $http->redirect('/wiki/HomePage'); // 302
255 %% 279 %%
264   - Ends script execution 288   - Ends script execution
265 289
266 **Example:** 290 **Example:**
267 %%php 291 %%(hl php)
268 $http->terminate(); 292 $http->terminate();
269 %% 293 %%
270 294
274 Sets HTTP response status code. 298 Sets HTTP response status code.
275 299
276 **Supported Status Codes:** 300 **Supported Status Codes:**
277 %%php 301 %%(hl php)
278 200 => 'OK' 302 200 => 'OK'
279 206 => 'Partial Content' 303 206 => 'Partial Content'
280 301 => 'Moved Permanently' 304 301 => 'Moved Permanently'
294 %% 318 %%
295 319
296 **Example:** 320 **Example:**
297 %%php 321 %%(hl php)
298 $http->status(404); // Send 404 Not Found 322 $http->status(404); // Send 404 Not Found
299 %% 323 %%
300 324
315   - ##Cache-Control: no-store## 339   - ##Cache-Control: no-store##
316 340
317 **Example:** 341 **Example:**
318 %%php 342 %%(hl php)
319 $http->no_cache(); // Client-side only 343 $http->no_cache(); // Client-side only
320 $http->no_cache(false); // Both client & server 344 $http->no_cache(false); // Both client & server
321 %% 345 %%
329   - ##Cache-Control: public## 353   - ##Cache-Control: public##
330 354
331 **Example:** 355 **Example:**
332 %%php 356 %%(hl php)
333 $http->cache_promisc(); 357 $http->cache_promisc();
334 %% 358 %%
335 359
374   - Associative array: ##['en' => 'en', 'de' => 'de', ...]## 398   - Associative array: ##['en' => 'en', 'de' => 'de', ...]##
375 399
376 **Example:** 400 **Example:**
377 %%php 401 %%(hl php)
378 $all_langs = $http->available_languages(false); 402 $all_langs = $http->available_languages(false);
379 $allowed = $http->available_languages(true); 403 $allowed = $http->available_languages(true);
380 %% 404 %%
400   - GZip compression for text files 424   - GZip compression for text files
401 425
402 **Special Paths:** 426 **Special Paths:**
403 %%php 427 %%(hl php)
404 $http->sendfile(404); // Serves file defined by HTTP_404 constant 428 $http->sendfile(404); // Serves file defined by HTTP_404 constant
405 $http->sendfile(403); // Serves file defined by HTTP_403 constant 429 $http->sendfile(403); // Serves file defined by HTTP_403 constant
406 %% 430 %%
407 431
408 **Example:** 432 **Example:**
409 %%php 433 %%(hl php)
410 $http->sendfile('uploads/document.pdf', 'my-document.pdf', 30); 434 $http->sendfile('uploads/document.pdf', 'my-document.pdf', 30);
411 %% 435 %%
412 436
420   - Default: ##'application/octet-stream'## 444   - Default: ##'application/octet-stream'##
421 445
422 **Example:** 446 **Example:**
423 %%php 447 %%(hl php)
424 $mime = $http->mime_type('file.pdf'); // 'application/pdf' 448 $mime = $http->mime_type('file.pdf'); // 'application/pdf'
425 %% 449 %%
426 450
450   - Headers not already sent 474   - Headers not already sent
451 475
452 **Example:** 476 **Example:**
453 %%php 477 %%(hl php)
454 $http->gzip(); 478 $http->gzip();
455 %% 479 %%
456 480
466   - Converts encoding properly 490   - Converts encoding properly
467 491
468 **Example:** 492 **Example:**
469 %%php 493 %%(hl php)
470 $data = $http->parse_str('name=John&age=30'); 494 $data = $http->parse_str('name=John&age=30');
471 %% 495 %%
472 496
498 522
499 ---- 523 ----
500 524
501 === Configuration Dependencies === 525 ===Configuration Dependencies===
502 526
503 527 The class relies on these database configuration settings:
504 528
505 === Constants Used === 529 #|
506 530 *| Setting | Type | Purpose |*
507 531 || ##base_url## | string | Wiki's base URL ||
    532 || ##tls## | bool | Enable HTTPS enforcement ||
    533 || ##cache## | bool | Enable page caching ||
    534 || ##cache_ttl## | int | Cache lifetime in seconds ||
    535 || ##session_store## | int | 1=File, 0=Database ||
    536 || ##system_seed_hash## | string | Session encryption seed ||
    537 || ##cookie_prefix## | string | Session cookie prefix ||
    538 || ##cookie_path## | string | Cookie path ||
    539 || ##allow_persistent_cookie## | bool | Allow persistent login ||
    540 || ##session_length## | int | Session lifetime in seconds ||
    541 || ##reverse_proxy_addresses## | string | Comma/space-separated proxy IPs ||
    542 || ##reverse_proxy_header## | string | Custom X-Forwarded header ||
    543 || ##language## | string | Default language code ||
    544 || ##multilanguage## | bool | Enable language negotiation ||
    545 || ##allowed_languages## | string | Comma/space-separated allowed langs ||
    546 || ##enable_security_headers## | bool | Send security headers ||
    547 || ##csp## | int | CSP setting (0/1/2) ||
    548 || ##permissions_policy## | int | Permissions-Policy setting (0/1/2) ||
    549 || ##referrer_policy## | int | Referrer-Policy setting (0-8) ||
    550 |#
    551
    552 ----
    553
    554 ===Constants Used===
    555
    556 #|
    557 *| Constant | Type | Purpose |*
    558 || ##IN_WACKO## | bool | Security check (exit if not defined) ||
    559 || ##CHMOD_SAFE## | int | File permissions for cache files ||
    560 || ##CHMOD_FILE## | int | File permissions for config cache ||
    561 || ##CACHE_PAGE_DIR## | string | Page cache directory ||
    562 || ##CACHE_SESSION_DIR## | string | Session cache directory ||
    563 || ##CACHE_CONFIG_DIR## | string | Config cache directory ||
    564 || ##CONFIG_DIR## | string | Configuration directory ||
    565 || ##LANG_DIR## | string | Language files directory ||
    566 || ##DAYSECS## | int | Seconds in a day (86400) ||
    567 || ##HTTP_404## | string | Path to 404 error page ||
    568 || ##HTTP_403## | string | Path to 403 error page ||
    569 |#
    570
    571 ----
508 572
509 === Workflow Examples === 573 === Workflow Examples ===
510 574
511 ==== Example 1: Handling a GET Request ==== 575 ====Example 1: Handling a GET Request====
512 576
513 %%php 577 %%(hl php)
514 // In main wiki entry point 578 // In main wiki entry point
515 $http = new Http($db); 579 $http = new Http($db);
516 $http->session(0); // Start session 580 $http->session(0); // Start session
532 596
533 ==== Example 2: Handling TLS/HTTPS Upgrade ==== 597 ==== Example 2: Handling TLS/HTTPS Upgrade ====
534 598
535 %%php 599 %%(hl php)
536 $http = new Http($db); // Constructor detects TLS requirement 600 $http = new Http($db); // Constructor detects TLS requirement
537 // If TLS is enabled and user wasn't in TLS before: 601 // If TLS is enabled and user wasn't in TLS before:
538 // - Sets TLS session flag 602 // - Sets TLS session flag
542 606
543 ==== Example 3: Invalidating Cache After Page Edit ==== 607 ==== Example 3: Invalidating Cache After Page Edit ====
544 608
545 %%php 609 %%(hl php)
546 // User edits a page 610 // User edits a page
547 $http = new Http($db); 611 $http = new Http($db);
548 $count = $http->invalidate_page('HomePage'); 612 $count = $http->invalidate_page('HomePage');
551 615
552 ==== Example 4: Serving a File ==== 616 ==== Example 4: Serving a File ====
553 617
554 %%php 618 %%(hl php)
555 $http = new Http($db); 619 $http = new Http($db);
556 $http->session(2); // Static file mode - no session replay prevention 620 $http->session(2); // Static file mode - no session replay prevention
557 621
626 690
627 The class integrates with WackoWiki's diagnostic system: 691 The class integrates with WackoWiki's diagnostic system:
628 692
629 %%php 693 %%(hl php)
630 // Diagnostic messages are preserved across redirects 694 // Diagnostic messages are preserved across redirects
631 // via session flash data 695 // via session flash data
632 696