diff options
| author | Kevin Kuehler <keur@xcf.berkeley.edu> | 2019-11-10 15:22:35 -0800 |
|---|---|---|
| committer | Drew DeVault <sir@cmpwn.com> | 2019-11-17 13:19:42 -0500 |
| commit | 4966b912c6612768a21c3092fd197124ed504ae9 (patch) | |
| tree | 533f8e86c88ebd1f36b0d753467953e1bf930424 | |
| parent | c655afa32bea3208885386cc3e600d19c934dd39 (diff) | |
commands/account: Disable :view for deleted msgs
Allowing the user to view deleted messages creates all sorts of race
conditions. The most devious race condition is pv.source can be set to a
nil while another PartViewer is still running a goroutine in
attemptCopy.
Here is a trace when this happens.
goroutine 76 [running]: io.copyBuffer(0x7f8ad02641d0, 0xc00040f590, 0x0,
0x0, 0xc0007cc000, 0x8000, 0x8000, 0x0, 0x0, 0x8b3d60)
/usr/lib/go/src/io/io.go:402 +0x101 io.Copy(...)
/usr/lib/go/src/io/io.go:364
git.sr.ht/~sircmpwn/aerc/widgets.(*PartViewer).attemptCopy.func4(0xc00017efd0,
0xc0004da7c0) /home/keur/repos/aerc/widgets/msgviewer.go:576 +0x611
created by git.sr.ht/~sircmpwn/aerc/widgets.(*PartViewer).attemptCopy
/home/keur/repos/aerc/widgets/msgviewer.go:544 +0x144
We could add a guard in store.FetchBodyPart to only call the callback
when msg.Part.Reader != nil, but we still get a hanging pager. Therefore
it seems more reasonable to disable this completely.
Signed-off-by: Kevin Kuehler <keur@xcf.berkeley.edu>
| -rw-r--r-- | commands/account/view.go | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/commands/account/view.go b/commands/account/view.go index af39360..b287406 100644 --- a/commands/account/view.go +++ b/commands/account/view.go @@ -30,7 +30,8 @@ func (ViewMessage) Execute(aerc *widgets.Aerc, args []string) error { } store := acct.Messages().Store() msg := acct.Messages().Selected() - if msg == nil { + _, deleted := store.Deleted[msg.Uid] + if msg == nil || deleted { return nil } viewer := widgets.NewMessageViewer(acct, aerc.Config(), store, msg) |