[Bug] Panic when I export Messages

[zenlei]

Describe the bug

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x28 pc=0x118612e]

goroutine 15 [running]:
github.com/gabriel-vasile/mimetype.(*MIME).Extension(...)
github.com/gabriel-vasile/[email protected]/mime.go:32
github.com/iyear/tdl/core/tmedia.GetDocumentName(0xc000349cc0)
github.com/iyear/tdl/[email protected]/tmedia/document.go:37 +0x6e
github.com/iyear/tdl/core/tmedia.GetDocumentInfo(0x64?)
github.com/iyear/tdl/[email protected]/tmedia/document.go:22 +0x88
github.com/iyear/tdl/core/tmedia.extractMedia({0x1b06158?, 0xc000401840?})
github.com/iyear/tdl/[email protected]/tmedia/media.go:19 +0x4d
github.com/iyear/tdl/core/tmedia.GetMedia({0x1b1b348?, 0xc00026bb80?})
github.com/iyear/tdl/[email protected]/tmedia/media.go:37 +0x65
github.com/iyear/tdl/app/chat.Export({0x1b01b68, 0xc0002d5410}, 0xc00027e000, {0x1b00160?, 0xc0001f8120}, {0x0, {0x7ffedb7a8e2f, 0x5}, 0x0, {0xc0001c8770, ...}, ...})
github.com/iyear/tdl/app/chat/export.go:178 +0x1196
github.com/iyear/tdl/cmd.NewChatExport.func1.1({0x1b01ba0?, 0xc00007f540?}, 0xc000041a40?, {0x1b00160, 0xc0001f8120})
github.com/iyear/tdl/cmd/chat.go:86 +0x9a
github.com/iyear/tdl/cmd.tRun.func1({0x1b01ba0?, 0xc00007f540?})
github.com/iyear/tdl/cmd/root.go:163 +0x31
github.com/iyear/tdl/cmd.tRun.RunWithAuth.func2({0x1b01ba0, 0xc00007f540})
github.com/iyear/tdl/[email protected]/tclient/tclient.go:120 +0x63
github.com/gotd/td/telegram.(*Client).Run.func3({0x1b01ba0, 0xc00007f540})
github.com/gotd/[email protected]/telegram/connect.go:150 +0xb7
github.com/gotd/td/telegram.(*Client).Run.(*CancellableGroup).Go.func6()
github.com/gotd/[email protected]/tdsync/cancel_group.go:48 +0x26
golang.org/x/sync/errgroup.(*Group).Go.func1()
golang.org/x/[email protected]/errgroup/errgroup.go:78 +0x56
created by golang.org/x/sync/errgroup.(*Group).Go in goroutine 1
golang.org/x/[email protected]/errgroup/errgroup.go:75 +0x96

To Reproduce

wget https://github.com/iyear/tdl/releases/download/v0.17.3/tdl_Linux_64bit.tar.gz
tar xvf tdl_Linux_64bit.tar.gz
./tdl chat export -c SQMP3 --ntp pool.ntp.org

Expected behavior

First, I ran it without specifying NTP and encountered an error. The second time, I thought it might be a timing issue, so I specified NTP, but it still gave me the same error.

Version

Version: 0.17.3
Commit: 6c382b8
Date: 2024-07-07T10:59:56Z
go1.21.11 linux/amd64

Which OS are you running tdl on?

Linux

Additional context

No response

[zenlei]

OS infomation:
cat /etc/issue
Debian GNU/Linux 12 \n \l
uname -a
Linux e67d627cb7 5.15.126-1-pve #1 SMP PVE 5.15.126-1 (2023-10-03T17:24Z) x86_64 GNU/Linux

[zenlei]

Hi,
Maybe I found the cause of the problem. When I tdl chat export, if I use -T id -i 0,1000 to specify the ID range, there will be no problem if I split the export ID and export it several times. So the cause of the problem is timeout or overflow?

[iyear]

Sorry, I can't reproduce it with v0.17.4

Command: ./tdl chat export -c SQMP3 --ntp pool.ntp.org