Adding upstream version 6.4.3+dfsg1.upstream/6.4.3+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 178 insertions, 0 deletions

diff --git a/wp-includes/vars.php b/wp-includes/vars.php
new file mode 100644
index 0000000..dc28b85
--- /dev/null
+++ b/wp-includes/vars.php
@@ -0,0 +1,178 @@
+<?php
+/**
+ * Creates common globals for the rest of WordPress
+ *
+ * Sets $pagenow global which is the filename of the current screen.
+ * Checks for the browser to set which one is currently being used.
+ *
+ * Detects which user environment WordPress is being used on.
+ * Only attempts to check for Apache, Nginx and IIS -- three web
+ * servers with known pretty permalink capability.
+ *
+ * Note: Though Nginx is detected, WordPress does not currently
+ * generate rewrite rules for it. See https://wordpress.org/documentation/article/nginx/
+ *
+ * @package WordPress
+ */
+
+global $pagenow,
+	$is_lynx, $is_gecko, $is_winIE, $is_macIE, $is_opera, $is_NS4, $is_safari, $is_chrome, $is_iphone, $is_IE, $is_edge,
+	$is_apache, $is_IIS, $is_iis7, $is_nginx;
+
+// On which page are we?
+if ( is_admin() ) {
+	// wp-admin pages are checked more carefully.
+	if ( is_network_admin() ) {
+		preg_match( '#/wp-admin/network/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches );
+	} elseif ( is_user_admin() ) {
+		preg_match( '#/wp-admin/user/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches );
+	} else {
+		preg_match( '#/wp-admin/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches );
+	}
+
+	$pagenow = ! empty( $self_matches[1] ) ? $self_matches[1] : '';
+	$pagenow = trim( $pagenow, '/' );
+	$pagenow = preg_replace( '#\?.*?$#', '', $pagenow );
+
+	if ( '' === $pagenow || 'index' === $pagenow || 'index.php' === $pagenow ) {
+		$pagenow = 'index.php';
+	} else {
+		preg_match( '#(.*?)(/|$)#', $pagenow, $self_matches );
+		$pagenow = strtolower( $self_matches[1] );
+		if ( ! str_ends_with( $pagenow, '.php' ) ) {
+			$pagenow .= '.php'; // For `Options +Multiviews`: /wp-admin/themes/index.php (themes.php is queried).
+		}
+	}
+} else {
+	if ( preg_match( '#([^/]+\.php)([?/].*?)?$#i', $_SERVER['PHP_SELF'], $self_matches ) ) {
+		$pagenow = strtolower( $self_matches[1] );
+	} else {
+		$pagenow = 'index.php';
+	}
+}
+unset( $self_matches );
+
+// Simple browser detection.
+$is_lynx   = false;
+$is_gecko  = false;
+$is_winIE  = false;
+$is_macIE  = false;
+$is_opera  = false;
+$is_NS4    = false;
+$is_safari = false;
+$is_chrome = false;
+$is_iphone = false;
+$is_edge   = false;
+
+if ( isset( $_SERVER['HTTP_USER_AGENT'] ) ) {
+	if ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'Lynx' ) ) {
+		$is_lynx = true;
+	} elseif ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'Edg' ) ) {
+		$is_edge = true;
+	} elseif ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'Opera' ) || str_contains( $_SERVER['HTTP_USER_AGENT'], 'OPR/' ) ) {
+		$is_opera = true;
+	} elseif ( stripos( $_SERVER['HTTP_USER_AGENT'], 'chrome' ) !== false ) {
+		if ( stripos( $_SERVER['HTTP_USER_AGENT'], 'chromeframe' ) !== false ) {
+			$is_admin = is_admin();
+			/**
+			 * Filters whether Google Chrome Frame should be used, if available.
+			 *
+			 * @since 3.2.0
+			 *
+			 * @param bool $is_admin Whether to use the Google Chrome Frame. Default is the value of is_admin().
+			 */
+			$is_chrome = apply_filters( 'use_google_chrome_frame', $is_admin );
+			if ( $is_chrome ) {
+				header( 'X-UA-Compatible: chrome=1' );
+			}
+			$is_winIE = ! $is_chrome;
+		} else {
+			$is_chrome = true;
+		}
+	} elseif ( stripos( $_SERVER['HTTP_USER_AGENT'], 'safari' ) !== false ) {
+		$is_safari = true;
+	} elseif ( ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'MSIE' ) || str_contains( $_SERVER['HTTP_USER_AGENT'], 'Trident' ) )
+		&& str_contains( $_SERVER['HTTP_USER_AGENT'], 'Win' )
+	) {
+		$is_winIE = true;
+	} elseif ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'MSIE' ) && str_contains( $_SERVER['HTTP_USER_AGENT'], 'Mac' ) ) {
+		$is_macIE = true;
+	} elseif ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'Gecko' ) ) {
+		$is_gecko = true;
+	} elseif ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'Nav' ) && str_contains( $_SERVER['HTTP_USER_AGENT'], 'Mozilla/4.' ) ) {
+		$is_NS4 = true;
+	}
+}
+
+if ( $is_safari && stripos( $_SERVER['HTTP_USER_AGENT'], 'mobile' ) !== false ) {
+	$is_iphone = true;
+}
+
+$is_IE = ( $is_macIE || $is_winIE );
+
+// Server detection.
+
+/**
+ * Whether the server software is Apache or something else
+ *
+ * @global bool $is_apache
+ */
+$is_apache = ( str_contains( $_SERVER['SERVER_SOFTWARE'], 'Apache' ) || str_contains( $_SERVER['SERVER_SOFTWARE'], 'LiteSpeed' ) );
+
+/**
+ * Whether the server software is Nginx or something else
+ *
+ * @global bool $is_nginx
+ */
+$is_nginx = ( str_contains( $_SERVER['SERVER_SOFTWARE'], 'nginx' ) );
+
+/**
+ * Whether the server software is IIS or something else
+ *
+ * @global bool $is_IIS
+ */
+$is_IIS = ! $is_apache && ( str_contains( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS' ) || str_contains( $_SERVER['SERVER_SOFTWARE'], 'ExpressionDevServer' ) );
+
+/**
+ * Whether the server software is IIS 7.X or greater
+ *
+ * @global bool $is_iis7
+ */
+$is_iis7 = $is_IIS && (int) substr( $_SERVER['SERVER_SOFTWARE'], strpos( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/' ) + 14 ) >= 7;
+
+/**
+ * Test if the current browser runs on a mobile device (smart phone, tablet, etc.)
+ *
+ * @since 3.4.0
+ * @since 6.4.0 Added checking for the Sec-CH-UA-Mobile request header.
+ *
+ * @return bool
+ */
+function wp_is_mobile() {
+	if ( isset( $_SERVER['HTTP_SEC_CH_UA_MOBILE'] ) ) {
+		// This is the `Sec-CH-UA-Mobile` user agent client hint HTTP request header.
+		// See <https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Sec-CH-UA-Mobile>.
+		$is_mobile = ( '?1' === $_SERVER['HTTP_SEC_CH_UA_MOBILE'] );
+	} elseif ( empty( $_SERVER['HTTP_USER_AGENT'] ) ) {
+		$is_mobile = false;
+	} elseif ( str_contains( $_SERVER['HTTP_USER_AGENT'], 'Mobile' ) // Many mobile devices (all iPhone, iPad, etc.)
+		|| str_contains( $_SERVER['HTTP_USER_AGENT'], 'Android' )
+		|| str_contains( $_SERVER['HTTP_USER_AGENT'], 'Silk/' )
+		|| str_contains( $_SERVER['HTTP_USER_AGENT'], 'Kindle' )
+		|| str_contains( $_SERVER['HTTP_USER_AGENT'], 'BlackBerry' )
+		|| str_contains( $_SERVER['HTTP_USER_AGENT'], 'Opera Mini' )
+		|| str_contains( $_SERVER['HTTP_USER_AGENT'], 'Opera Mobi' ) ) {
+			$is_mobile = true;
+	} else {
+		$is_mobile = false;
+	}
+
+	/**
+	 * Filters whether the request should be treated as coming from a mobile device or not.
+	 *
+	 * @since 4.9.0
+	 *
+	 * @param bool $is_mobile Whether the request is from a mobile device or not.
+	 */
+	return apply_filters( 'wp_is_mobile', $is_mobile );
+}