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widget/gonk/nsClipboard.cpp@ac0c01689b40 (annotated)

widget/gonk/nsClipboard.cpp

Thu, 15 Jan 2015 15:59:08 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 15 Jan 2015 15:59:08 +0100

branch

TOR_BUG_9701

changeset 10

ac0c01689b40

permissions

-rw-r--r--

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0	1	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	2	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	3	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	4
michael@0	5	#include "mozilla/dom/ContentChild.h"
michael@0	6	#include "nsClipboard.h"
michael@0	7	#include "nsISupportsPrimitives.h"
michael@0	8	#include "nsCOMPtr.h"
michael@0	9	#include "nsComponentManagerUtils.h"
michael@0	10	#include "nsXULAppAPI.h"
michael@0	11
michael@0	12	using namespace mozilla;
michael@0	13	using mozilla::dom::ContentChild;
michael@0	14
michael@0	15	#define LOG_TAG "Clipboard"
michael@0	16	#define LOGI(args...) __android_log_print(ANDROID_LOG_INFO, LOG_TAG, ## args)
michael@0	17	#define LOGE(args...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, ## args)
michael@0	18
michael@0	19	NS_IMPL_ISUPPORTS(nsClipboard, nsIClipboard)
michael@0	20
michael@0	21	nsClipboard::nsClipboard()
michael@0	22	{
michael@0	23	}
michael@0	24
michael@0	25	NS_IMETHODIMP
michael@0	26	nsClipboard::SetData(nsITransferable *aTransferable,
michael@0	27	nsIClipboardOwner *anOwner, int32_t aWhichClipboard)
michael@0	28	{
michael@0	29	if (aWhichClipboard != kGlobalClipboard) {
michael@0	30	return NS_ERROR_NOT_IMPLEMENTED;
michael@0	31	}
michael@0	32
michael@0	33	nsCOMPtr<nsISupports> tmp;
michael@0	34	uint32_t len;
michael@0	35	nsresult rv = aTransferable->GetTransferData(kUnicodeMime, getter_AddRefs(tmp),
michael@0	36	&len);
michael@0	37	if (NS_WARN_IF(NS_FAILED(rv))) {
michael@0	38	return rv;
michael@0	39	}
michael@0	40	nsCOMPtr<nsISupportsString> supportsString = do_QueryInterface(tmp);
michael@0	41	// No support for non-text data
michael@0	42	if (NS_WARN_IF(!supportsString)) {
michael@0	43	LOGE("No support for non-text data. See bug 952456.");
michael@0	44	return NS_ERROR_NOT_IMPLEMENTED;
michael@0	45	}
michael@0	46	nsAutoString buffer;
michael@0	47	supportsString->GetData(buffer);
michael@0	48
michael@0	49	if (XRE_GetProcessType() == GeckoProcessType_Default) {
michael@0	50	mClipboard = buffer;
michael@0	51	} else {
michael@0	52	bool isPrivateData = false;
michael@0	53	aTransferable->GetIsPrivateData(&isPrivateData);
michael@0	54	ContentChild::GetSingleton()->SendSetClipboardText(buffer, isPrivateData,
michael@0	55	aWhichClipboard);
michael@0	56	}
michael@0	57
michael@0	58	return NS_OK;
michael@0	59	}
michael@0	60
michael@0	61	NS_IMETHODIMP
michael@0	62	nsClipboard::GetData(nsITransferable *aTransferable, int32_t aWhichClipboard)
michael@0	63	{
michael@0	64	if (aWhichClipboard != kGlobalClipboard) {
michael@0	65	return NS_ERROR_NOT_IMPLEMENTED;
michael@0	66	}
michael@0	67
michael@0	68	nsAutoString buffer;
michael@0	69	if (XRE_GetProcessType() == GeckoProcessType_Default) {
michael@0	70	buffer = mClipboard;
michael@0	71	} else {
michael@0	72	ContentChild::GetSingleton()->SendGetClipboardText(aWhichClipboard, &buffer);
michael@0	73	}
michael@0	74
michael@0	75	nsresult rv;
michael@0	76	nsCOMPtr<nsISupportsString> dataWrapper =
michael@0	77	do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID, &rv);
michael@0	78	if (NS_WARN_IF(NS_FAILED(rv))) {
michael@0	79	return rv;
michael@0	80	}
michael@0	81
michael@0	82	rv = dataWrapper->SetData(buffer);
michael@0	83	if (NS_WARN_IF(NS_FAILED(rv))) {
michael@0	84	return rv;
michael@0	85	}
michael@0	86
michael@0	87	// If our data flavor has already been added, this will fail. But we don't care
michael@0	88	aTransferable->AddDataFlavor(kUnicodeMime);
michael@0	89
michael@0	90	nsCOMPtr<nsISupports> nsisupportsDataWrapper =
michael@0	91	do_QueryInterface(dataWrapper);
michael@0	92	rv = aTransferable->SetTransferData(kUnicodeMime, nsisupportsDataWrapper,
michael@0	93	buffer.Length() * sizeof(PRUnichar));
michael@0	94	if (NS_WARN_IF(NS_FAILED(rv))) {
michael@0	95	return rv;
michael@0	96	}
michael@0	97
michael@0	98	return NS_OK;
michael@0	99	}
michael@0	100
michael@0	101	NS_IMETHODIMP
michael@0	102	nsClipboard::EmptyClipboard(int32_t aWhichClipboard)
michael@0	103	{
michael@0	104	if (aWhichClipboard != kGlobalClipboard) {
michael@0	105	return NS_ERROR_NOT_IMPLEMENTED;
michael@0	106	}
michael@0	107	if (XRE_GetProcessType() == GeckoProcessType_Default) {
michael@0	108	mClipboard.Truncate(0);
michael@0	109	} else {
michael@0	110	ContentChild::GetSingleton()->SendEmptyClipboard(aWhichClipboard);
michael@0	111	}
michael@0	112
michael@0	113	return NS_OK;
michael@0	114	}
michael@0	115
michael@0	116	NS_IMETHODIMP
michael@0	117	nsClipboard::HasDataMatchingFlavors(const char **aFlavorList,
michael@0	118	uint32_t aLength, int32_t aWhichClipboard,
michael@0	119	bool *aHasText)
michael@0	120	{
michael@0	121	*aHasText = false;
michael@0	122	if (aWhichClipboard != kGlobalClipboard) {
michael@0	123	return NS_ERROR_NOT_IMPLEMENTED;
michael@0	124	}
michael@0	125	if (XRE_GetProcessType() == GeckoProcessType_Default) {
michael@0	126	*aHasText = !mClipboard.IsEmpty();
michael@0	127	} else {
michael@0	128	ContentChild::GetSingleton()->SendClipboardHasText(aWhichClipboard, aHasText);
michael@0	129	}
michael@0	130	return NS_OK;
michael@0	131	}
michael@0	132
michael@0	133	NS_IMETHODIMP
michael@0	134	nsClipboard::SupportsSelectionClipboard(bool *aIsSupported)
michael@0	135	{
michael@0	136	*aIsSupported = false;
michael@0	137	return NS_OK;
michael@0	138	}
michael@0	139
michael@0	140	NS_IMETHODIMP
michael@0	141	nsClipboard::SupportsFindClipboard(bool* _retval)
michael@0	142	{
michael@0	143	NS_ENSURE_ARG_POINTER(_retval);
michael@0	144
michael@0	145	*_retval = false;
michael@0	146	return NS_OK;
michael@0	147	}
michael@0	148