`nsDocShellLoadState::IsExemptFromHTTPSOnlyMode` is currently only used by HTTPS-First. It is used for fixing upgrade-downgrade loops and when loading history entries, as when we already know if HTTPS-First succeeded there or not, we have no need for trying to upgrade again and can disable HTTPS-First. With the changes introduced by Bug 1839612, `nsDocShellLoadState::IsExemptFromHTTPSOnlyMode` also applies to HTTPS-Only, which is a problem because disabling HTTPS-Only for history entries will result in them potentially being loaded insecurely without the user setting an exception. As a solution this patch just applies `nsILoadInfo::HTTPS_ONLY_EXEMPT_NEXT_LOAD`, the flag being set when `nsDocShellLoadState::IsExemptFromHTTPSOnlyMode` is set, when HTTPS-First is enabled, and renames both flags to reflect that behavior.
Differential Revision: https://phabricator.services.mozilla.com/D185829
The main goal here is to get the wireframe test to work with
parent-controlled navigation.
This means we don't need to collect the wireframe any more in
PersistLayoutHistoryState, I think, because it is redundant.
I think we need to clear the wireframe in finish restore for
when we navigate back.
As a result of these changes, the two todo subtests in the
wireframe test now pass.
Differential Revision: https://phabricator.services.mozilla.com/D146252
nsSHistories are kept in a linked list. When we leak one, we hit
a linked list assertion. This patch works around that by adding
a helper that removes everything from the list before it is
destroyed. We'll still have test failures, but they'll be in
the leak checker, which is hopefully more informative.
Differential Revision: https://phabricator.services.mozilla.com/D145977
Requested index handling is very fragile. We should try to figure out a way to remove it altogether.
(But unfortunately some behavior similar to it is needed in certain cases).
The patch is a stop-gap solution.
Differential Revision: https://phabricator.services.mozilla.com/D137479
The issue is that when going back from a non-bfcacheable page to a bfcacheable page and the first page
modifies requested index around the same time, UpdateIndex() doesn't have the right requested index. This is a variant of bug 1725680.
The test case loads a non-bfcacheable page, then bfcachable, then another non-bfcacheable and then goes back and forward.
Without the patch indexes go wrong and forward doesn't do anything.
Differential Revision: https://phabricator.services.mozilla.com/D127963
When we navigate in history to the same entry that we're current at then we
actually do a reload. The problem is in the way we detect whether to do a reload
in the parent process.
If a page does a back and a forward one after the other in a script, then the
parent will calculate the index for the back and tell the child to load the
entry at that index. While the child is processing the load of that entry, the
BC in the parent process still has the same entry as its active entry (until the
child commits the load of the entry over IPC). The parent then processes the
forward, calculates the index for the forward and finds the entry at that index.
This is the same entry that we were at before doing anything, and so the same
entry as the active entry in the BC in the parent process. We used to compare
the entry that we're going to load with the active entry in the BC to determine
whether we're doing a reload, and so in this situation we would assume the
forward navigation was actually doing a reload. The child would reload the page,
and we'd run the script again and we'd end up in a reload loop.
Comparing the offset with 0 to determine whether we're doing a reload fixes this
issue.
Differential Revision: https://phabricator.services.mozilla.com/D126585
When we navigate in history to the same entry that we're current at then we
actually do a reload. The problem is in the way we detect whether to do a reload
in the parent process.
If a page does a back and a forward one after the other in a script, then the
parent will calculate the index for the back and tell the child to load the
entry at that index. While the child is processing the load of that entry, the
BC in the parent process still has the same entry as its active entry (until the
child commits the load of the entry over IPC). The parent then processes the
forward, calculates the index for the forward and finds the entry at that index.
This is the same entry that we were at before doing anything, and so the same
entry as the active entry in the BC in the parent process. We used to compare
the entry that we're going to load with the active entry in the BC to determine
whether we're doing a reload, and so in this situation we would assume the
forward navigation was actually doing a reload. The child would reload the page,
and we'd run the script again and we'd end up in a reload loop.
Comparing the offset with 0 to determine whether we're doing a reload fixes this
issue.
Differential Revision: https://phabricator.services.mozilla.com/D126585
Using requestedIndex on the child side is hard, because there are race conditions when a session history load is triggered
and at the same time a non-session history load commits a new active entry.
Differential Revision: https://phabricator.services.mozilla.com/D126619
When we navigate in history to the same entry that we're current at then we
actually do a reload. The problem is in the way we detect whether to do a reload
in the parent process.
If a page does a back and a forward one after the other in a script, then the
parent will calculate the index for the back and tell the child to load the
entry at that index. While the child is processing the load of that entry, the
BC in the parent process still has the same entry as its active entry (until the
child commits the load of the entry over IPC). The parent then processes the
forward, calculates the index for the forward and finds the entry at that index.
This is the same entry that we were at before doing anything, and so the same
entry as the active entry in the BC in the parent process. We used to compare
the entry that we're going to load with the active entry in the BC to determine
whether we're doing a reload, and so in this situation we would assume the
forward navigation was actually doing a reload. The child would reload the page,
and we'd run the script again and we'd end up in a reload loop.
Comparing the offset with 0 to determine whether we're doing a reload fixes this
issue.
Differential Revision: https://phabricator.services.mozilla.com/D126585
The fix let's ContentParent::RecvSynchronizeLayoutHistoryState update the layout history state.
Using an existing test to launch a subtest for this. Hopefully the description of the test helps with reviewing it.
(These BroadcastChannel based tests can be hard to follow.)
Differential Revision: https://phabricator.services.mozilla.com/D122376
This is a large refactoring of the DocumentChannel process switch codepath,
with the end goal of being better able to support future process switch
requirements such as dynamic isolation on android, as well as the immediate
requirement of null principal handling.
The major changes include:
1. The logic is in C++ and has less failure cases, meaning it should be harder
for us to error out unexpectedly and not process switch.
2. Process selection decisions are more explicit, and tend to rely less on
state such as the current remoteType when possible. This makes reasoning
about where a specific load will complete easier.
3. Additional checks are made after a "WebContent" behavior is selected to
ensure that if an existing document in the same BCG is found, the load will
finish in the required content process. This should make dynamic checks such
as Android's logged-in site isolation easier to implement.
4. ProcessIsolation logging is split out from DocumentChannel so that it's
easier to log just the information related to process selection when
debugging.
5. Null result principal precursors are considered when performing process
selection.
Other uses of E10SUtils for process selection have not yet been migrated to the
new design as they have slightly different requirements. This will be done in
follow-up bugs.
Differential Revision: https://phabricator.services.mozilla.com/D120673
This is a large refactoring of the DocumentChannel process switch codepath,
with the end goal of being better able to support future process switch
requirements such as dynamic isolation on android, as well as the immediate
requirement of null principal handling.
The major changes include:
1. The logic is in C++ and has less failure cases, meaning it should be harder
for us to error out unexpectedly and not process switch.
2. Process selection decisions are more explicit, and tend to rely less on
state such as the current remoteType when possible. This makes reasoning
about where a specific load will complete easier.
3. Additional checks are made after a "WebContent" behavior is selected to
ensure that if an existing document in the same BCG is found, the load will
finish in the required content process. This should make dynamic checks such
as Android's logged-in site isolation easier to implement.
4. ProcessIsolation logging is split out from DocumentChannel so that it's
easier to log just the information related to process selection when
debugging.
5. Null result principal precursors are considered when performing process
selection.
Other uses of E10SUtils for process selection have not yet been migrated to the
new design as they have slightly different requirements. This will be done in
follow-up bugs.
Differential Revision: https://phabricator.services.mozilla.com/D120673
