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Diffstat (limited to 'widget/tests/test_bug1123480.xhtml')
| -rw-r--r-- | widget/tests/test_bug1123480.xhtml | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/widget/tests/test_bug1123480.xhtml b/widget/tests/test_bug1123480.xhtml new file mode 100644 index 0000000000..c84a9c1d59 --- /dev/null +++ b/widget/tests/test_bug1123480.xhtml @@ -0,0 +1,153 @@ +<?xml version="1.0"?> +<?xml-stylesheet type="text/css" href="chrome://global/skin"?> +<?xml-stylesheet type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"?> +<!-- +https://bugzilla.mozilla.org/show_bug.cgi?id=1123480 +--> +<window title="Mozilla Bug 1123480" + xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" + onload="RunTest();"> + <title>nsTransferable PBM Overflow Selection Test</title> + <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/> + + <script type="application/javascript"> + <![CDATA[ + // Create over 1 MB of sample garbage text. JavaScript strings are represented by + // UTF16 strings, so the size is twice as much as the actual string length. + // This value is chosen such that the size of the memory for the string exceeds + // the kLargeDatasetSize threshold in nsTransferable.h. + // It is also not a round number to reduce the odds of having an accidental + // collisions with another file (since the test below looks at the file size + // to identify the file). + var Ipsum = "0123456789".repeat(1234321); + var IpsumByteLength = Ipsum.length * 2; + var SHORT_STRING_NO_CACHE = "short string that will never be cached to the disk"; + + function isWindows() { + const {AppConstants} = ChromeUtils.import("resource://gre/modules/AppConstants.jsm"); + return AppConstants.platform === 'win'; + } + + // Get a list of open file descriptors that refer to a file with the same size as + // the expected data (and assume that any mutations in file descriptor counts + // are caused by our test). + function getClipboardCacheFDCount() { + var dir; + if (isWindows()) { + // On Windows, nsAnonymousTemporaryFile does not immediately delete the file. + // Instead, the Windows-specific FILE_FLAG_DELETE_ON_CLOSE flag is used, + // which means that the file is deleted when the last handle is closed. + // Apparently, this flag is unreliable (e.g. when the application crashes), + // so nsAnonymousTemporaryFile stores the temporary files in a subdirectory, + // which is cleaned up some time after start-up. + + // This is just a test, and during the test we deterministically close the + // handles, so if FILE_FLAG_DELETE_ON_CLOSE does the thing it promises, the + // file is actually removed when the handle is closed. + + var {FileUtils} = ChromeUtils.import("resource://gre/modules/FileUtils.jsm"); + // Path from nsAnonymousTemporaryFile.cpp, GetTempDir. + dir = FileUtils.getFile("TmpD", ["mozilla-temp-files"]); + } else { + dir = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsIFile); + dir.initWithPath("/dev/fd"); + } + var count = 0; + for (var de = dir.directoryEntries; de.hasMoreElements(); ) { + var fdFile = de.nextFile; + var fileSize; + try { + fileSize = fdFile.fileSize; + } catch (e) { + // This can happen on macOS. + continue; + } + if (fileSize === IpsumByteLength) { + // Assume that the file was created by us if the size matches. + ++count; + } + } + return count; + } + + async function RunTest() { + SimpleTest.waitForExplicitFinish(); + const gClipboardHelper = Cc["@mozilla.org/widget/clipboardhelper;1"].getService(Ci.nsIClipboardHelper); + + // Sanitize environment + gClipboardHelper.copyString(SHORT_STRING_NO_CACHE); + await new Promise(resolve => setTimeout(resolve, 0)); + + var initialFdCount = getClipboardCacheFDCount(); + + // Overflow a nsTransferable region by using the clipboard helper + gClipboardHelper.copyString(Ipsum); + + // gClipboardHelper.copyString also puts the data on the selection + // clipboard if the platform supports it. + var expectedFdDelta = Services.clipboard.isClipboardTypeSupported(Services.clipboard.kSelectionClipboard) ? 2 : 1; + // Undefined private browsing mode should cache to disk + is(getClipboardCacheFDCount(), initialFdCount + expectedFdDelta, "should cache to disk when PBM is undefined"); + + // Sanitize environment again. + gClipboardHelper.copyString(SHORT_STRING_NO_CACHE); + await new Promise(resolve => setTimeout(resolve, 0)); + + is(getClipboardCacheFDCount(), initialFdCount, "should have cleared the clipboard data"); + + // Repeat procedure of plain text selection with private browsing + // disabled and enabled + const {PrivateBrowsingUtils} = ChromeUtils.import("resource://gre/modules/PrivateBrowsingUtils.jsm"); + for (let private of [false, true]) { + var win = window.browsingContext.topChromeWindow.open("about:blank", "_blank", "chrome, width=500, height=200" + (private ? ", private" : "")); + ok(win, private ? "should open private window" : "should open non-private window"); + is(PrivateBrowsingUtils.isContentWindowPrivate(win), private, "used correct window context"); + + // Select plaintext in private/non-private channel + const nsTransferable = Components.Constructor("@mozilla.org/widget/transferable;1", "nsITransferable"); + const nsSupportsString = Components.Constructor("@mozilla.org/supports-string;1", "nsISupportsString"); + var Loadctx = PrivateBrowsingUtils.privacyContextFromWindow(win); + var Transfer = nsTransferable(); + var Suppstr = nsSupportsString(); + Suppstr.data = Ipsum; + Transfer.init(Loadctx); + Transfer.addDataFlavor("text/plain"); + Transfer.setTransferData("text/plain", Suppstr); + + // Enabled private browsing mode should not cache any selection to disk; disabled should + if (private) { + is(getClipboardCacheFDCount(), initialFdCount, "did not violate private browsing mode"); + } else { + is(getClipboardCacheFDCount(), initialFdCount + 1, "should save memory by caching non-private clipboard data to disk"); + } + + // Share the transferable with the system. + Services.clipboard.setData(Transfer, null, Services.clipboard.kGlobalClipboard); + if (private) { + is(getClipboardCacheFDCount(), initialFdCount, "did not violate private browsing mode"); + } else { + is(getClipboardCacheFDCount(), initialFdCount + 1, "should save memory by caching non-private clipboard data to disk"); + } + + // Sanitize the environment. + Suppstr = nsSupportsString(); + Suppstr.data = SHORT_STRING_NO_CACHE; + Transfer.setTransferData("text/plain", Suppstr); + await new Promise(resolve => setTimeout(resolve, 0)); + is(getClipboardCacheFDCount(), initialFdCount, "should drop the cache file, if any."); + + Services.clipboard.setData(Transfer, null, Services.clipboard.kGlobalClipboard); + is(getClipboardCacheFDCount(), initialFdCount, "should postsanitize the environment"); + } + + SimpleTest.finish(); + } + ]]> + </script> + + <!-- test results are displayed in the html:body --> + <body xmlns="http://www.w3.org/1999/xhtml"> + <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1123480" + target="_blank">Mozilla Bug 1123480</a> + </body> +</window> |