| 1 |
<?php |
| 2 |
/** |
| 3 |
* Desktop Mode — request routing helpers. |
| 4 |
* |
| 5 |
* Chromeless / classic admin-bar suppression and the |
| 6 |
* `wp_redirect` filter pair that re-stamps the desktop-mode |
| 7 |
* flags onto server-built redirects. Extracted from the |
| 8 |
* 1,609-LOC `helpers.php` during the architecture-0.8.1 PHP |
| 9 |
* slicing (phase 6). |
| 10 |
* |
| 11 |
* Behaviour is unchanged. Plugins that registered against any of |
| 12 |
* these filters keep working: PHP looks function references up by |
| 13 |
* name at hook-fire time, and `desktop-mode.php` requires this |
| 14 |
* file before `helpers.php`, so the function definitions are |
| 15 |
* always present by the time WordPress wants them. |
| 16 |
* |
| 17 |
* Functions in this file: |
| 18 |
* - {@see desktop_mode_chromeless_hide_admin_bar()} — `show_admin_bar` filter |
| 19 |
* - {@see desktop_mode_chromeless_suppress_admin_bar()} — `admin_init` action |
| 20 |
* - {@see desktop_mode_chromeless_preserve_redirect()} — `wp_redirect` filter |
| 21 |
* - {@see desktop_mode_classic_preserve_redirect()} — `wp_redirect` filter |
| 22 |
* - {@see desktop_mode_is_admin_redirect_target()} — internal predicate |
| 23 |
* |
| 24 |
* The chromeless / classic *request-detection* helpers |
| 25 |
* (`desktop_mode_is_chromeless_request()`, |
| 26 |
* `desktop_mode_is_classic_request()`) still live in |
| 27 |
* `helpers.php` for now — moving them is the next phase-6 cut. |
| 28 |
* |
| 29 |
* @package Desktop_Mode |
| 30 |
* @since 0.8.1 |
| 31 |
*/ |
| 32 |
|
| 33 |
defined( 'ABSPATH' ) || exit; |
| 34 |
|
| 35 |
/** |
| 36 |
* Returns true when `$url` is a same-origin admin URL. |
| 37 |
* |
| 38 |
* Uses parsed-URL host + path comparison rather than a prefix |
| 39 |
* `strpos` check so `//evil.com/wp-admin/…` or a URL whose |
| 40 |
* normalisation happens to share the admin-URL prefix can't |
| 41 |
* sneak through. |
| 42 |
* |
| 43 |
* An empty string returns false — a missing URL is never |
| 44 |
* "same-origin admin" for the purposes of any caller. |
| 45 |
* |
| 46 |
* @since 0.11.0 |
| 47 |
* |
| 48 |
* @param string $url URL to test. |
| 49 |
* @return bool |
| 50 |
*/ |
| 51 |
function desktop_mode_url_is_same_admin( $url ) { |
| 52 |
if ( ! is_string( $url ) || '' === $url ) { |
| 53 |
return false; |
| 54 |
} |
| 55 |
|
| 56 |
$parts = wp_parse_url( $url ); |
| 57 |
$admin_parts = wp_parse_url( admin_url() ); |
| 58 |
if ( ! is_array( $parts ) || ! is_array( $admin_parts ) ) { |
| 59 |
return false; |
| 60 |
} |
| 61 |
|
| 62 |
// Host comparison is case-insensitive per RFC 3986. Missing |
| 63 |
// host on the tested URL (relative or scheme-only) is a |
| 64 |
// reject — callers should only be handing us fully-qualified |
| 65 |
// URLs. |
| 66 |
$url_host = isset( $parts['host'] ) ? strtolower( $parts['host'] ) : ''; |
| 67 |
$admin_host = isset( $admin_parts['host'] ) ? strtolower( $admin_parts['host'] ) : ''; |
| 68 |
if ( '' === $url_host || $url_host !== $admin_host ) { |
| 69 |
return false; |
| 70 |
} |
| 71 |
|
| 72 |
// Path comparison is case-sensitive. The admin path always |
| 73 |
// ends in `/` (e.g. `/wp-admin/`), so a prefix test is |
| 74 |
// accurate — nothing at `/wp-administrator/…` can match. |
| 75 |
$url_path = isset( $parts['path'] ) ? $parts['path'] : ''; |
| 76 |
$admin_path = isset( $admin_parts['path'] ) ? $admin_parts['path'] : '/wp-admin/'; |
| 77 |
return 0 === strpos( $url_path, $admin_path ); |
| 78 |
} |
| 79 |
|
| 80 |
/** |
| 81 |
* Resolves an admin-page filename (e.g. `edit.php`) to its |
| 82 |
* absolute admin URL, allowlisted against the canonical set of |
| 83 |
* wp-admin top-level filenames. |
| 84 |
* |
| 85 |
* Returns a `WP_Error` when the input contains path traversal, |
| 86 |
* isn't a bare `.php` filename, or points at a file that doesn't |
| 87 |
* exist in the static allowlist. A regex-only check would accept |
| 88 |
* `custom_admin_page.php` if a plugin named something that way; |
| 89 |
* the explicit allowlist closes that. |
| 90 |
* |
| 91 |
* @since 0.11.0 |
| 92 |
* |
| 93 |
* @param string $file Bare admin filename (no path, no query string). |
| 94 |
* @return string|WP_Error Absolute admin URL on success, `WP_Error` otherwise. |
| 95 |
*/ |
| 96 |
function desktop_mode_resolve_admin_target( $file ) { |
| 97 |
$file = is_string( $file ) ? trim( $file ) : ''; |
| 98 |
if ( '' === $file ) { |
| 99 |
return new WP_Error( |
| 100 |
'desktop_mode_empty_target', |
| 101 |
__( 'Admin target cannot be empty.', 'desktop-mode' ) |
| 102 |
); |
| 103 |
} |
| 104 |
|
| 105 |
if ( false !== strpos( $file, '..' ) || false !== strpos( $file, '/' ) || false !== strpos( $file, '\\' ) ) { |
| 106 |
return new WP_Error( |
| 107 |
'desktop_mode_invalid_target', |
| 108 |
__( 'Admin target contains invalid path characters.', 'desktop-mode' ) |
| 109 |
); |
| 110 |
} |
| 111 |
|
| 112 |
// Lowercase match mirrors WP's filesystem assumptions on |
| 113 |
// case-insensitive volumes (macOS, Windows). The allowlist |
| 114 |
// below is the final arbiter; this regex just pre-filters |
| 115 |
// clearly bad inputs cheaply. |
| 116 |
if ( ! preg_match( '/^[a-z0-9_-]+\.php$/i', $file ) ) { |
| 117 |
return new WP_Error( |
| 118 |
'desktop_mode_invalid_target', |
| 119 |
__( 'Admin target must be a plain .php filename.', 'desktop-mode' ) |
| 120 |
); |
| 121 |
} |
| 122 |
|
| 123 |
if ( ! in_array( strtolower( $file ), desktop_mode_admin_target_allowlist(), true ) ) { |
| 124 |
return new WP_Error( |
| 125 |
'desktop_mode_unknown_target', |
| 126 |
__( 'Admin target does not exist.', 'desktop-mode' ) |
| 127 |
); |
| 128 |
} |
| 129 |
|
| 130 |
return admin_url( $file ); |
| 131 |
} |
| 132 |
|
| 133 |
/** |
| 134 |
* Returns the allowlist of canonical wp-admin top-level |
| 135 |
* filenames that {@see desktop_mode_resolve_admin_target()} |
| 136 |
* accepts. |
| 137 |
* |
| 138 |
* Hardcoded rather than read from disk so the plugin doesn't |
| 139 |
* depend on a particular WordPress install layout (and doesn't |
| 140 |
* reference `ABSPATH` to probe core files). Plugins that ship |
| 141 |
* their own top-level admin pages (rare) can extend the list |
| 142 |
* via the filter. |
| 143 |
* |
| 144 |
* @since 0.6.2 |
| 145 |
* |
| 146 |
* @return string[] Lowercased filenames including extension. |
| 147 |
*/ |
| 148 |
function desktop_mode_admin_target_allowlist() { |
| 149 |
$files = array( |
| 150 |
'about.php', |
| 151 |
'admin-ajax.php', |
| 152 |
'admin-footer.php', |
| 153 |
'admin-header.php', |
| 154 |
'admin-post.php', |
| 155 |
'admin.php', |
| 156 |
'async-upload.php', |
| 157 |
'authorize-application.php', |
| 158 |
'comment.php', |
| 159 |
'credits.php', |
| 160 |
'custom-background.php', |
| 161 |
'custom-header.php', |
| 162 |
'customize.php', |
| 163 |
'edit-comments.php', |
| 164 |
'edit-form-advanced.php', |
| 165 |
'edit-form-blocks.php', |
| 166 |
'edit-form-comment.php', |
| 167 |
'edit-link-form.php', |
| 168 |
'edit-tag-form.php', |
| 169 |
'edit-tags.php', |
| 170 |
'edit.php', |
| 171 |
'erase-personal-data.php', |
| 172 |
'export-personal-data.php', |
| 173 |
'export.php', |
| 174 |
'freedoms.php', |
| 175 |
'import.php', |
| 176 |
'index.php', |
| 177 |
'install.php', |
| 178 |
'link-add.php', |
| 179 |
'link-manager.php', |
| 180 |
'link.php', |
| 181 |
'load-scripts.php', |
| 182 |
'load-styles.php', |
| 183 |
'media-new.php', |
| 184 |
'media-upload.php', |
| 185 |
'media.php', |
| 186 |
'menu-header.php', |
| 187 |
'menu.php', |
| 188 |
'moderation.php', |
| 189 |
'ms-admin.php', |
| 190 |
'ms-delete-site.php', |
| 191 |
'ms-edit.php', |
| 192 |
'ms-options.php', |
| 193 |
'ms-sites.php', |
| 194 |
'ms-themes.php', |
| 195 |
'ms-upgrade-network.php', |
| 196 |
'ms-users.php', |
| 197 |
'my-sites.php', |
| 198 |
'nav-menus.php', |
| 199 |
'network.php', |
| 200 |
'options-discussion.php', |
| 201 |
'options-general.php', |
| 202 |
'options-head.php', |
| 203 |
'options-media.php', |
| 204 |
'options-permalink.php', |
| 205 |
'options-privacy.php', |
| 206 |
'options-reading.php', |
| 207 |
'options-writing.php', |
| 208 |
'options.php', |
| 209 |
'plugin-editor.php', |
| 210 |
'plugin-install.php', |
| 211 |
'plugins.php', |
| 212 |
'post-new.php', |
| 213 |
'post.php', |
| 214 |
'press-this.php', |
| 215 |
'privacy-policy-guide.php', |
| 216 |
'privacy.php', |
| 217 |
'profile.php', |
| 218 |
'revision.php', |
| 219 |
'setup-config.php', |
| 220 |
'site-editor.php', |
| 221 |
'site-health-info.php', |
| 222 |
'site-health.php', |
| 223 |
'sidebar.php', |
| 224 |
'term.php', |
| 225 |
'theme-editor.php', |
| 226 |
'theme-install.php', |
| 227 |
'themes.php', |
| 228 |
'tools.php', |
| 229 |
'update-core.php', |
| 230 |
'update.php', |
| 231 |
'upgrade.php', |
| 232 |
'upload.php', |
| 233 |
'user-edit.php', |
| 234 |
'user-new.php', |
| 235 |
'users.php', |
| 236 |
'widgets.php', |
| 237 |
); |
| 238 |
|
| 239 |
/** |
| 240 |
* Filters the wp-admin filename allowlist used when resolving |
| 241 |
* portal `target=` query args. |
| 242 |
* |
| 243 |
* @since 0.6.2 |
| 244 |
* |
| 245 |
* @param string[] $files Default allowlist. |
| 246 |
*/ |
| 247 |
$files = (array) apply_filters( 'desktop_mode_admin_target_allowlist', $files ); |
| 248 |
|
| 249 |
return array_values( array_unique( array_map( 'strtolower', array_filter( $files, 'is_string' ) ) ) ); |
| 250 |
} |
| 251 |
|
| 252 |
/** |
| 253 |
* Checks whether the current request is a chromeless request. |
| 254 |
* |
| 255 |
* Chromeless requests are admin pages loaded inside desktop-mode |
| 256 |
* windows (iframes). They render only the page content without |
| 257 |
* the admin shell (sidebar, admin bar, footer). |
| 258 |
* |
| 259 |
* @since 0.1.0 |
| 260 |
* |
| 261 |
* @return bool True if this is a chromeless (iframe) request. |
| 262 |
*/ |
| 263 |
function desktop_mode_is_chromeless_request() { |
| 264 |
if ( ! desktop_mode_is_enabled() ) { |
| 265 |
// Only allow chromeless mode if the user actually has |
| 266 |
// desktop mode enabled. Prevents stripping admin chrome via |
| 267 |
// a bare `?desktop_mode_chromeless=1` parameter from a |
| 268 |
// logged-out URL. |
| 269 |
return false; |
| 270 |
} |
| 271 |
|
| 272 |
// Primary signal — the explicit query flag the parent shell |
| 273 |
// adds when opening windows. |
| 274 |
// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- read-only request flag, no state change. |
| 275 |
if ( ! empty( $_GET['desktop_mode_chromeless'] ) && '1' === sanitize_text_field( wp_unslash( $_GET['desktop_mode_chromeless'] ) ) ) { |
| 276 |
return true; |
| 277 |
} |
| 278 |
|
| 279 |
// Fallback signal — the request is a same-origin iframe load. |
| 280 |
// Modern browsers (Chrome 80+, Firefox 90+, Safari 16.4+) send |
| 281 |
// the `Sec-Fetch-*` headers reliably, and they are immune to |
| 282 |
// JavaScript spoofing (the browser sets them itself). |
| 283 |
// |
| 284 |
// This catches the failure mode where an internal admin |
| 285 |
// navigation drops the `?desktop_mode_chromeless=1` query flag — |
| 286 |
// Gutenberg's `window.location` assignments, meta-refresh |
| 287 |
// redirects, or any link the inline rewriter missed. The user |
| 288 |
// is in an iframe on the same origin, has desktop mode enabled, |
| 289 |
// so render as chromeless. |
| 290 |
// |
| 291 |
// `Sec-Fetch-Site: same-origin` is the cross-origin guard so a |
| 292 |
// foreign site that iframes the wp-admin page can't trick us |
| 293 |
// into stripping the chrome — the user agent reports the |
| 294 |
// embedding context honestly. |
| 295 |
$fetch_dest = isset( $_SERVER['HTTP_SEC_FETCH_DEST'] ) |
| 296 |
? sanitize_text_field( wp_unslash( $_SERVER['HTTP_SEC_FETCH_DEST'] ) ) |
| 297 |
: ''; |
| 298 |
$fetch_site = isset( $_SERVER['HTTP_SEC_FETCH_SITE'] ) |
| 299 |
? sanitize_text_field( wp_unslash( $_SERVER['HTTP_SEC_FETCH_SITE'] ) ) |
| 300 |
: ''; |
| 301 |
if ( 'iframe' === $fetch_dest && 'same-origin' === $fetch_site ) { |
| 302 |
/** |
| 303 |
* Filter the Sec-Fetch fallback. Return false to require an |
| 304 |
* explicit `?desktop_mode_chromeless=1` flag (matches |
| 305 |
* pre-0.18 behaviour); useful for environments where a |
| 306 |
* reverse proxy strips the `Sec-Fetch-*` headers and they |
| 307 |
* can't be trusted. |
| 308 |
* |
| 309 |
* @since 0.18.0 |
| 310 |
* |
| 311 |
* @param bool $allow Default true. |
| 312 |
*/ |
| 313 |
return (bool) apply_filters( 'desktop_mode_chromeless_sec_fetch_fallback', true ); |
| 314 |
} |
| 315 |
|
| 316 |
return false; |
| 317 |
} |
| 318 |
|
| 319 |
/** |
| 320 |
* Checks whether the current request carries the "classic |
| 321 |
* override" flag. |
| 322 |
* |
| 323 |
* The window-chrome "Detach" action opens an admin page in a new |
| 324 |
* browser tab with `?desktop_mode_classic=1` so the user can view |
| 325 |
* that one page outside the desktop shell without disabling |
| 326 |
* desktop mode account-wide. The flag is a per-request override: |
| 327 |
* `desktop_mode_is_enabled()` still returns true (the user's |
| 328 |
* preference hasn't changed), but the shell, shell assets, and |
| 329 |
* body class are skipped for this request so the classic admin |
| 330 |
* renders normally. |
| 331 |
* |
| 332 |
* Keep this separate from `desktop_mode_is_enabled()` so the |
| 333 |
* admin-bar toggle in the detached tab correctly reflects the |
| 334 |
* account state — letting the user disable desktop mode entirely |
| 335 |
* from the tab if they want to. |
| 336 |
* |
| 337 |
* @since 0.4.0 |
| 338 |
* |
| 339 |
* @return bool True if the request carries `?desktop_mode_classic=1`. |
| 340 |
*/ |
| 341 |
function desktop_mode_is_classic_request() { |
| 342 |
// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- read-only request flag. |
| 343 |
if ( empty( $_GET[ DESKTOP_MODE_CLASSIC_FLAG ] ) ) { |
| 344 |
return false; |
| 345 |
} |
| 346 |
// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- read-only request flag. |
| 347 |
return '1' === sanitize_text_field( wp_unslash( $_GET[ DESKTOP_MODE_CLASSIC_FLAG ] ) ); |
| 348 |
} |
| 349 |
|
| 350 |
/** |
| 351 |
* Disables the admin bar on chromeless (iframe) requests. |
| 352 |
* |
| 353 |
* Hooked on the `show_admin_bar` filter so the front-end bar path |
| 354 |
* also sees a false return. In admin, `is_admin_bar_showing()` |
| 355 |
* short-circuits to true for any `is_admin()` request regardless |
| 356 |
* of this filter, so the actual render is stopped by |
| 357 |
* {@see desktop_mode_chromeless_suppress_admin_bar()} below; this |
| 358 |
* filter is kept for completeness + tests. |
| 359 |
* |
| 360 |
* @since 0.1.0 |
| 361 |
* |
| 362 |
* @param bool $show Whether the admin bar should be shown. |
| 363 |
* @return bool |
| 364 |
*/ |
| 365 |
function desktop_mode_chromeless_hide_admin_bar( $show ) { |
| 366 |
if ( desktop_mode_is_chromeless_request() ) { |
| 367 |
return false; |
| 368 |
} |
| 369 |
return $show; |
| 370 |
} |
| 371 |
add_filter( 'show_admin_bar', 'desktop_mode_chromeless_hide_admin_bar' ); |
| 372 |
|
| 373 |
/** |
| 374 |
* Suppresses the admin bar render inside chromeless iframes. |
| 375 |
* |
| 376 |
* `is_admin_bar_showing()` unconditionally returns true in admin |
| 377 |
* context, so the `show_admin_bar` filter alone can't stop |
| 378 |
* `wp_admin_bar_render()` from firing on `in_admin_header`. We |
| 379 |
* detach the render action instead and let chromeless.css hide |
| 380 |
* the `wp-toolbar` padding on `<html>`. |
| 381 |
* |
| 382 |
* @since 0.1.0 |
| 383 |
*/ |
| 384 |
function desktop_mode_chromeless_suppress_admin_bar() { |
| 385 |
if ( desktop_mode_is_chromeless_request() ) { |
| 386 |
remove_action( 'in_admin_header', 'wp_admin_bar_render', 0 ); |
| 387 |
remove_action( 'wp_body_open', 'wp_admin_bar_render', 0 ); |
| 388 |
} |
| 389 |
} |
| 390 |
add_action( 'admin_init', 'desktop_mode_chromeless_suppress_admin_bar' ); |
| 391 |
|
| 392 |
/** |
| 393 |
* Preserves the `desktop_mode_chromeless` flag through admin |
| 394 |
* redirects. |
| 395 |
* |
| 396 |
* A chromeless iframe can be navigated away from chromeless mode |
| 397 |
* by any redirect that drops the query string — |
| 398 |
* `wp_redirect( admin_url( 'edit.php' ) )` after saving a |
| 399 |
* classic-editor post is the canonical example. The client-side |
| 400 |
* form interceptor handles the outgoing request, but the |
| 401 |
* server-built redirect URL is what the browser follows. |
| 402 |
* Re-append the flag here so the landing page stays chromeless |
| 403 |
* and the window doesn't "break out" into a nested admin. |
| 404 |
* |
| 405 |
* Scope is intentionally narrow: only same-site admin URLs are |
| 406 |
* touched, and only when the current request is itself |
| 407 |
* chromeless. Anything else passes through unchanged. |
| 408 |
* |
| 409 |
* @since 0.1.0 |
| 410 |
* |
| 411 |
* @param string $location The redirect URL. |
| 412 |
* @return string The redirect URL, with `desktop_mode_chromeless=1` appended when applicable. |
| 413 |
*/ |
| 414 |
function desktop_mode_chromeless_preserve_redirect( $location ) { |
| 415 |
if ( empty( $location ) || ! desktop_mode_is_chromeless_request() ) { |
| 416 |
return $location; |
| 417 |
} |
| 418 |
|
| 419 |
if ( ! desktop_mode_is_admin_redirect_target( $location ) ) { |
| 420 |
return $location; |
| 421 |
} |
| 422 |
|
| 423 |
// Don't double-append if the URL already carries the flag. |
| 424 |
if ( false !== strpos( $location, 'desktop_mode_chromeless=' ) ) { |
| 425 |
return $location; |
| 426 |
} |
| 427 |
|
| 428 |
return add_query_arg( 'desktop_mode_chromeless', '1', $location ); |
| 429 |
} |
| 430 |
add_filter( 'wp_redirect', 'desktop_mode_chromeless_preserve_redirect', 999 ); |
| 431 |
|
| 432 |
/** |
| 433 |
* Preserves the `desktop_mode_classic` flag through admin |
| 434 |
* redirects. |
| 435 |
* |
| 436 |
* The detached-tab workflow depends on the classic flag living |
| 437 |
* on every same-tab navigation — otherwise a `wp_redirect()` |
| 438 |
* after saving a post (for instance) would drop it and the very |
| 439 |
* next page would fall back into the desktop shell. The JS |
| 440 |
* interceptor stamps the flag onto every outbound link and form, |
| 441 |
* but it can't touch server-built redirect URLs. |
| 442 |
* |
| 443 |
* Scope mirrors the chromeless preserver: only same-site |
| 444 |
* wp-admin targets, only when the current request is itself a |
| 445 |
* classic-override request, and the flag is never appended |
| 446 |
* twice. |
| 447 |
* |
| 448 |
* @since 0.4.0 |
| 449 |
* |
| 450 |
* @param string $location The redirect URL. |
| 451 |
* @return string The redirect URL, with `desktop_mode_classic=1` appended when applicable. |
| 452 |
*/ |
| 453 |
function desktop_mode_classic_preserve_redirect( $location ) { |
| 454 |
if ( empty( $location ) || ! desktop_mode_is_classic_request() ) { |
| 455 |
return $location; |
| 456 |
} |
| 457 |
|
| 458 |
if ( ! desktop_mode_is_admin_redirect_target( $location ) ) { |
| 459 |
return $location; |
| 460 |
} |
| 461 |
|
| 462 |
if ( false !== strpos( $location, DESKTOP_MODE_CLASSIC_FLAG . '=' ) ) { |
| 463 |
return $location; |
| 464 |
} |
| 465 |
|
| 466 |
return add_query_arg( DESKTOP_MODE_CLASSIC_FLAG, '1', $location ); |
| 467 |
} |
| 468 |
add_filter( 'wp_redirect', 'desktop_mode_classic_preserve_redirect', 999 ); |
| 469 |
|
| 470 |
/** |
| 471 |
* Whether `$location` is a redirect target that lands inside |
| 472 |
* wp-admin on the current site. Handles all four shapes WP core |
| 473 |
* actually emits: |
| 474 |
* |
| 475 |
* - Absolute, same-host: `https://example.com/wp-admin/users.php?...` |
| 476 |
* - Absolute path: `/wp-admin/users.php?...` |
| 477 |
* - Relative to wp-admin: `users.php?update=add&id=42` (used by |
| 478 |
* `user-new.php`, `edit-tags.php`, and |
| 479 |
* quite a few other core admin scripts) |
| 480 |
* - Same-host without path: `?paged=2` |
| 481 |
* |
| 482 |
* Off-site redirects (login → external SSO, e.g.) and frontend |
| 483 |
* redirects (`/`, `/?p=42`) return false so we never paint our |
| 484 |
* query flag on URLs that don't run our admin code. |
| 485 |
* |
| 486 |
* @since 0.8.0 |
| 487 |
* |
| 488 |
* @internal |
| 489 |
* |
| 490 |
* @param string $location Raw redirect URL handed to `wp_redirect`. |
| 491 |
* @return bool |
| 492 |
*/ |
| 493 |
function desktop_mode_is_admin_redirect_target( $location ) { |
| 494 |
$location = (string) $location; |
| 495 |
if ( '' === $location ) { |
| 496 |
return false; |
| 497 |
} |
| 498 |
|
| 499 |
$parts = wp_parse_url( $location ); |
| 500 |
if ( false === $parts ) { |
| 501 |
return false; |
| 502 |
} |
| 503 |
|
| 504 |
// External host? Bail — we don't own that page. |
| 505 |
if ( ! empty( $parts['host'] ) ) { |
| 506 |
$site_host = wp_parse_url( site_url(), PHP_URL_HOST ); |
| 507 |
if ( $site_host && 0 !== strcasecmp( (string) $parts['host'], (string) $site_host ) ) { |
| 508 |
return false; |
| 509 |
} |
| 510 |
} |
| 511 |
|
| 512 |
$path = isset( $parts['path'] ) ? (string) $parts['path'] : ''; |
| 513 |
|
| 514 |
// Absolute path (URL-with-host or leading-slash variant). |
| 515 |
if ( '' !== $path ) { |
| 516 |
// `/wp-admin/foo.php` — definitive admin target. |
| 517 |
if ( false !== strpos( $path, '/wp-admin/' ) ) { |
| 518 |
return true; |
| 519 |
} |
| 520 |
// Absolute path NOT into wp-admin (e.g. `/`, `/wp-login.php`, |
| 521 |
// `/wp-json/...`). Frontend or login flow — leave alone. |
| 522 |
if ( '/' === $path[ 0 ] ) { |
| 523 |
return false; |
| 524 |
} |
| 525 |
} |
| 526 |
|
| 527 |
// Relative URL (or pure query string). Only safe to treat as |
| 528 |
// an admin target when the redirect was issued from inside |
| 529 |
// wp-admin — that's where wp_redirect( 'users.php?...' ) |
| 530 |
// actually resolves to /wp-admin/users.php?... at the |
| 531 |
// browser. is_admin() is the canonical signal. |
| 532 |
return is_admin(); |
| 533 |
} |
| 534 |
|
