Ben (Bingxing) Wang imbushuo

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I am imbushuo on github.
I am imbushuo (https://keybase.io/imbushuo) on keybase.
I have a public key ASDOrhNA8INjOhFTuNQ0_oNWCl47tb7VbgtIpIEMpz8LDgo

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Symptoms

Some users reported that certin subset of videos from Bilibili was unable to be loaded in Moegirlpedia. Further investigation indicates API responses of these videos do not properly include CORS header.

Root cause

Service's upsteram CDN vendor Akamai Technologies caches video queries for performance. However, HTTP header variation is not properly handled. For instance, if a bot sends query request to Akamai Edge without header Origin, Akamai Edge sends back backend response without Access-Control-Allow-Origin and caches it. Further requests to this video (in one day) will have the same response sent back.

Resolution

Moegirlpedia Commons Image Rotation Issue Investigation

Problem behavior

Some users reported issues while mirroring images from Wikipedia Commons to Mogirlpedia Commons. The image is expected to be "rotated" but actually not. Further tries suggest that certain platforms' behavior handling device position might affect image behavior in Moegirlpedia Commons.

Initial investigation

Widget:Bilibili Incident Report 17/03/31

Reproduce steps

Open specific page that contains video collection with post-modified video entities.
Title and video index might not match.

Root cause

The current logic of sorting is inconsistent with backend design. All video entities have been sorted prior to server's response.

Moegirlpedia HotCat Extension Bug Investigation 17/03/29

Condition set

Widget Hotcat is enabled in Gadget settings
In Special:UploadFile page
File validation is enabled and loaded. ~~It seems that not all interface languages have this feature on.~~ Update: It seems that file validation depends on some RL module that takes long time to load.

Reproduce steps

Select a random file and wait for file validation
Select another file

	;
	; DFRUsbCCGP.inf
	;
	; Installs CCGP and WinUSB device for DFR
	;

	[Version]
	Signature = "$Windows NT$"
	Class = USBDevice
	ClassGUID = {88BAE032-5A81-49f0-BC3D-A4FF138216D6}

	/*
	* Intel ACPI Component Architecture
	* AML/ASL+ Disassembler version 20190215 (32-bit version)
	* Copyright (c) 2000 - 2019 Intel Corporation
	*
	* Disassembling to symbolic ASL+ operators
	*
	* Disassembly of DSDT.raw, Sat Mar 02 23:59:24 2019
	*
	* Original Table Header:

	/*
	* Intel ACPI Component Architecture
	* AML/ASL+ Disassembler version 20190215 (32-bit version)
	* Copyright (c) 2000 - 2019 Intel Corporation
	*
	* Disassembly of ./MADT.aml, Tue Feb 26 06:30:52 2019
	*
	* ACPI Data Table [APIC]
	*
	* Format: [HexOffset DecimalOffset ByteLength] FieldName : FieldValue

	/*
	* Intel ACPI Component Architecture
	* AML/ASL+ Disassembler version 20180105 (32-bit version)
	* Copyright (c) 2000 - 2018 Intel Corporation
	*
	* Disassembly of MADT.acp, Mon Feb 19 21:28:04 2018
	*
	* ACPI Data Table [APIC]
	*
	* Format: [HexOffset DecimalOffset ByteLength] FieldName : FieldValue

	Param
	(
	[switch]
	$InjectOnly,

	[Parameter(Mandatory=$True)]
	[string]
	$ImageDir,

	[string]