xpcom/glue/nsCategoryCache.cpp@129ffea94266 (annotated)
xpcom/glue/nsCategoryCache.cpp
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
| michael@0 | 1 | /* vim:set st=2 sts=2 ts=2 et cin: */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "nsIObserverService.h" |
| michael@0 | 7 | #include "mozilla/Services.h" |
| michael@0 | 8 | #include "nsISupportsPrimitives.h" |
| michael@0 | 9 | #include "nsIStringEnumerator.h" |
| michael@0 | 10 | |
| michael@0 | 11 | #include "nsXPCOMCID.h" |
| michael@0 | 12 | |
| michael@0 | 13 | #include "nsCategoryCache.h" |
| michael@0 | 14 | |
| michael@0 | 15 | nsCategoryObserver::nsCategoryObserver(const char* aCategory) |
| michael@0 | 16 | : mCategory(aCategory) |
| michael@0 | 17 | , mObserversRemoved(false) |
| michael@0 | 18 | { |
| michael@0 | 19 | // First, enumerate the currently existing entries |
| michael@0 | 20 | nsCOMPtr<nsICategoryManager> catMan = |
| michael@0 | 21 | do_GetService(NS_CATEGORYMANAGER_CONTRACTID); |
| michael@0 | 22 | if (!catMan) |
| michael@0 | 23 | return; |
| michael@0 | 24 | |
| michael@0 | 25 | nsCOMPtr<nsISimpleEnumerator> enumerator; |
| michael@0 | 26 | nsresult rv = catMan->EnumerateCategory(aCategory, |
| michael@0 | 27 | getter_AddRefs(enumerator)); |
| michael@0 | 28 | if (NS_FAILED(rv)) |
| michael@0 | 29 | return; |
| michael@0 | 30 | |
| michael@0 | 31 | nsCOMPtr<nsIUTF8StringEnumerator> strings = do_QueryInterface(enumerator); |
| michael@0 | 32 | MOZ_ASSERT(strings); |
| michael@0 | 33 | |
| michael@0 | 34 | bool more; |
| michael@0 | 35 | while (NS_SUCCEEDED(strings->HasMore(&more)) && more) { |
| michael@0 | 36 | nsAutoCString entryName; |
| michael@0 | 37 | strings->GetNext(entryName); |
| michael@0 | 38 | |
| michael@0 | 39 | nsCString entryValue; |
| michael@0 | 40 | rv = catMan->GetCategoryEntry(aCategory, |
| michael@0 | 41 | entryName.get(), |
| michael@0 | 42 | getter_Copies(entryValue)); |
| michael@0 | 43 | if (NS_SUCCEEDED(rv)) { |
| michael@0 | 44 | nsCOMPtr<nsISupports> service = do_GetService(entryValue.get()); |
| michael@0 | 45 | if (service) { |
| michael@0 | 46 | mHash.Put(entryName, service); |
| michael@0 | 47 | } |
| michael@0 | 48 | } |
| michael@0 | 49 | } |
| michael@0 | 50 | |
| michael@0 | 51 | // Now, listen for changes |
| michael@0 | 52 | nsCOMPtr<nsIObserverService> serv = |
| michael@0 | 53 | mozilla::services::GetObserverService(); |
| michael@0 | 54 | if (serv) { |
| michael@0 | 55 | serv->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false); |
| michael@0 | 56 | serv->AddObserver(this, NS_XPCOM_CATEGORY_ENTRY_ADDED_OBSERVER_ID, false); |
| michael@0 | 57 | serv->AddObserver(this, NS_XPCOM_CATEGORY_ENTRY_REMOVED_OBSERVER_ID, false); |
| michael@0 | 58 | serv->AddObserver(this, NS_XPCOM_CATEGORY_CLEARED_OBSERVER_ID, false); |
| michael@0 | 59 | } |
| michael@0 | 60 | } |
| michael@0 | 61 | |
| michael@0 | 62 | nsCategoryObserver::~nsCategoryObserver() { |
| michael@0 | 63 | } |
| michael@0 | 64 | |
| michael@0 | 65 | NS_IMPL_ISUPPORTS(nsCategoryObserver, nsIObserver) |
| michael@0 | 66 | |
| michael@0 | 67 | void |
| michael@0 | 68 | nsCategoryObserver::ListenerDied() { |
| michael@0 | 69 | RemoveObservers(); |
| michael@0 | 70 | } |
| michael@0 | 71 | |
| michael@0 | 72 | void |
| michael@0 | 73 | nsCategoryObserver::RemoveObservers() { |
| michael@0 | 74 | if (mObserversRemoved) |
| michael@0 | 75 | return; |
| michael@0 | 76 | |
| michael@0 | 77 | mObserversRemoved = true; |
| michael@0 | 78 | nsCOMPtr<nsIObserverService> obsSvc = |
| michael@0 | 79 | mozilla::services::GetObserverService(); |
| michael@0 | 80 | if (obsSvc) { |
| michael@0 | 81 | obsSvc->RemoveObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID); |
| michael@0 | 82 | obsSvc->RemoveObserver(this, NS_XPCOM_CATEGORY_ENTRY_ADDED_OBSERVER_ID); |
| michael@0 | 83 | obsSvc->RemoveObserver(this, NS_XPCOM_CATEGORY_ENTRY_REMOVED_OBSERVER_ID); |
| michael@0 | 84 | obsSvc->RemoveObserver(this, NS_XPCOM_CATEGORY_CLEARED_OBSERVER_ID); |
| michael@0 | 85 | } |
| michael@0 | 86 | } |
| michael@0 | 87 | |
| michael@0 | 88 | NS_IMETHODIMP |
| michael@0 | 89 | nsCategoryObserver::Observe(nsISupports* aSubject, const char* aTopic, |
| michael@0 | 90 | const char16_t* aData) { |
| michael@0 | 91 | if (strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0) { |
| michael@0 | 92 | mHash.Clear(); |
| michael@0 | 93 | RemoveObservers(); |
| michael@0 | 94 | |
| michael@0 | 95 | return NS_OK; |
| michael@0 | 96 | } |
| michael@0 | 97 | |
| michael@0 | 98 | if (!aData || |
| michael@0 | 99 | !nsDependentString(aData).Equals(NS_ConvertASCIItoUTF16(mCategory))) |
| michael@0 | 100 | return NS_OK; |
| michael@0 | 101 | |
| michael@0 | 102 | nsAutoCString str; |
| michael@0 | 103 | nsCOMPtr<nsISupportsCString> strWrapper(do_QueryInterface(aSubject)); |
| michael@0 | 104 | if (strWrapper) |
| michael@0 | 105 | strWrapper->GetData(str); |
| michael@0 | 106 | |
| michael@0 | 107 | if (strcmp(aTopic, NS_XPCOM_CATEGORY_ENTRY_ADDED_OBSERVER_ID) == 0) { |
| michael@0 | 108 | // We may get an add notification even when we already have an entry. This |
| michael@0 | 109 | // is due to the notification happening asynchronously, so if the entry gets |
| michael@0 | 110 | // added and an nsCategoryObserver gets instantiated before events get |
| michael@0 | 111 | // processed, we'd get the notification for an existing entry. |
| michael@0 | 112 | // Do nothing in that case. |
| michael@0 | 113 | if (mHash.GetWeak(str)) |
| michael@0 | 114 | return NS_OK; |
| michael@0 | 115 | |
| michael@0 | 116 | nsCOMPtr<nsICategoryManager> catMan = |
| michael@0 | 117 | do_GetService(NS_CATEGORYMANAGER_CONTRACTID); |
| michael@0 | 118 | if (!catMan) |
| michael@0 | 119 | return NS_OK; |
| michael@0 | 120 | |
| michael@0 | 121 | nsCString entryValue; |
| michael@0 | 122 | catMan->GetCategoryEntry(mCategory.get(), |
| michael@0 | 123 | str.get(), |
| michael@0 | 124 | getter_Copies(entryValue)); |
| michael@0 | 125 | |
| michael@0 | 126 | nsCOMPtr<nsISupports> service = do_GetService(entryValue.get()); |
| michael@0 | 127 | |
| michael@0 | 128 | if (service) { |
| michael@0 | 129 | mHash.Put(str, service); |
| michael@0 | 130 | } |
| michael@0 | 131 | } else if (strcmp(aTopic, NS_XPCOM_CATEGORY_ENTRY_REMOVED_OBSERVER_ID) == 0) { |
| michael@0 | 132 | mHash.Remove(str); |
| michael@0 | 133 | } else if (strcmp(aTopic, NS_XPCOM_CATEGORY_CLEARED_OBSERVER_ID) == 0) { |
| michael@0 | 134 | mHash.Clear(); |
| michael@0 | 135 | } |
| michael@0 | 136 | return NS_OK; |
| michael@0 | 137 | } |
