Fix captive portal login ssl error overflow (60d5f46d) · Commits · e / os / android_frameworks_base

packages/CaptivePortalLogin/src/com/android/captiveportallogin/CaptivePortalLoginActivity.java

+61 −26

Original line number	Original line	Diff line number	Diff line
	@@ -58,6 +58,7 @@ import java.util.Random;
	public class CaptivePortalLoginActivity extends Activity {		public class CaptivePortalLoginActivity extends Activity {
	private static final String TAG = CaptivePortalLoginActivity.class.getSimpleName();		private static final String TAG = CaptivePortalLoginActivity.class.getSimpleName();
	private static final boolean DBG = true;		private static final boolean DBG = true;
			private static final boolean VDBG = false;

	private static final int SOCKET_TIMEOUT_MS = 10000;		private static final int SOCKET_TIMEOUT_MS = 10000;

	@@ -311,6 +312,7 @@ public class CaptivePortalLoginActivity extends Activity {

	private class MyWebViewClient extends WebViewClient {		private class MyWebViewClient extends WebViewClient {
	private static final String INTERNAL_ASSETS = "file:///android_asset/";		private static final String INTERNAL_ASSETS = "file:///android_asset/";

	private final String mBrowserBailOutToken = Long.toString(new Random().nextLong());		private final String mBrowserBailOutToken = Long.toString(new Random().nextLong());
	// How many Android device-independent-pixels per scaled-pixel		// How many Android device-independent-pixels per scaled-pixel
	// dp/sp = (px/sp) / (px/dp) = (1/sp) / (1/dp)		// dp/sp = (px/sp) / (px/dp) = (1/sp) / (1/dp)
	@@ -363,12 +365,6 @@ public class CaptivePortalLoginActivity extends Activity {
	testForCaptivePortal();		testForCaptivePortal();
	}		}

	// Convert Android device-independent-pixels (dp) to HTML size.
	private String dp(int dp) {
	// HTML px's are scaled just like dp's, so just add "px" suffix.
	return Integer.toString(dp) + "px";
	}

	// Convert Android scaled-pixels (sp) to HTML size.		// Convert Android scaled-pixels (sp) to HTML size.
	private String sp(int sp) {		private String sp(int sp) {
	// Convert sp to dp's.		// Convert sp to dp's.
	@@ -376,25 +372,11 @@ public class CaptivePortalLoginActivity extends Activity {
	// Apply a scale factor to make things look right.		// Apply a scale factor to make things look right.
	dp *= 1.3;		dp *= 1.3;
	// Convert dp's to HTML size.		// Convert dp's to HTML size.
	return dp((int)dp);		// HTML px's are scaled just like dp's, so just add "px" suffix.
			return Integer.toString((int)dp) + "px";
	}		}

	// A web page consisting of a large broken lock icon to indicate SSL failure.		// A web page consisting of a large broken lock icon to indicate SSL failure.
	private final String SSL_ERROR_HTML = "<html><head><style>" +
	"body { margin-left:" + dp(48) + "; margin-right:" + dp(48) + "; " +
	"margin-top:" + dp(96) + "; background-color:#fafafa; }" +
	"img { width:" + dp(48) + "; height:" + dp(48) + "; }" +
	"div.warn { font-size:" + sp(16) + "; margin-top:" + dp(16) + "; " +
	" opacity:0.87; line-height:1.28; }" +
	"div.example { font-size:" + sp(14) + "; margin-top:" + dp(16) + "; " +
	" opacity:0.54; line-height:1.21905; }" +
	"a { font-size:" + sp(14) + "; text-decoration:none; text-transform:uppercase; " +
	" margin-top:" + dp(24) + "; display:inline-block; color:#4285F4; " +
	" height:" + dp(48) + "; font-weight:bold; }" +
	"</style></head><body><p><img src=quantum_ic_warning_amber_96.png><br>" +
	"<div class=warn>%s</div>" +
	"<div class=example>%s</div>" +
	"<a href=%s>%s</a></body></html>";

	@Override		@Override
	public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {		public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
	@@ -402,10 +384,63 @@ public class CaptivePortalLoginActivity extends Activity {
	// Only show host to avoid leaking private info.		// Only show host to avoid leaking private info.
	Uri.parse(error.getUrl()).getHost() + " certificate: " +		Uri.parse(error.getUrl()).getHost() + " certificate: " +
	error.getCertificate() + "); displaying SSL warning.");		error.getCertificate() + "); displaying SSL warning.");
	final String html = String.format(SSL_ERROR_HTML, getString(R.string.ssl_error_warning),		final String sslErrorPage = makeSslErrorPage();
	getString(R.string.ssl_error_example), mBrowserBailOutToken,		if (VDBG) {
	getString(R.string.ssl_error_continue));		Log.d(TAG, sslErrorPage);
	view.loadDataWithBaseURL(INTERNAL_ASSETS, html, "text/HTML", "UTF-8", null);		}
			view.loadDataWithBaseURL(INTERNAL_ASSETS, sslErrorPage, "text/HTML", "UTF-8", null);
			}

			private String makeSslErrorPage() {
			final String warningMsg = getString(R.string.ssl_error_warning);
			final String exampleMsg = getString(R.string.ssl_error_example);
			final String continueMsg = getString(R.string.ssl_error_continue);
			return String.join("\n",
			"<html>",
			"<head>",
			" <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">",
			" <style>",
			" body {",
			" background-color:#fafafa;",
			" margin:auto;",
			" width:80%;",
			" margin-top: 96px",
			" }",
			" img {",
			" height:48px;",
			" width:48px;",
			" }",
			" div.warn {",
			" font-size:" + sp(16) + ";",
			" line-height:1.28;",
			" margin-top:16px;",
			" opacity:0.87;",
			" }",
			" div.example {",
			" font-size:" + sp(14) + ";",
			" line-height:1.21905;",
			" margin-top:16px;",
			" opacity:0.54;",
			" }",
			" a {",
			" color:#4285F4;",
			" display:inline-block;",
			" font-size:" + sp(14) + ";",
			" font-weight:bold;",
			" height:48px;",
			" margin-top:24px;",
			" text-decoration:none;",
			" text-transform:uppercase;",
			" }",
			" </style>",
			"</head>",
			"<body>",
			" <p><img src=quantum_ic_warning_amber_96.png><br>",
			" <div class=warn>" + warningMsg + "</div>",
			" <div class=example>" + exampleMsg + "</div>",
			" <a href=" + mBrowserBailOutToken + ">" + continueMsg + "</a>",
			"</body>",
			"</html>");
	}		}

	@Override		@Override