OVH的機器默認給的是/128，但是其實整個/64都是可以用的，如果添加到網卡上是可以雙向ping通的。
但是如果docker的bridge網路分配了一個IPv6，卻無法ping通。喝了一瓶果汁之後我發現是因為沒有向（OVH的）路由器發鄰居發現協議包（NDP）。
cdnjs鏡像
Solve Xposed module list become empty on Android 6.0 Marshmallow
Recently I found module list in Xposed become empty after I upgrade my Nexus5 to 6.0.1 (M4B30Z, Dec 2016). And all the modules are not activating. So I open logcat and see the following:
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01-10 21:35:02.682 294 294 E Xposed : Cannot load any modules because /data/data/de.robv.android.xposed.installer/conf/modules.list was not found |
Rovo89 said on a xda post that this file should be created if any module is activated. But somehow it didn’t do so on my Nexus5. So I create one myself and set correct permission (0644) and uid (you can run the Xposed Installer app and check the uid through ps |grep xposed). Then I reboot and check logcat again:
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01-10 21:29:39.485 295 295 E Xposed : Errors during Xposed initialization 01-10 21:29:39.485 295 295 E Xposed : java.io.IOException: Permission denied while reading /data/data/de.robv.android.xposed.installer/conf/modules.list |
Looks like it’s still not working.
Then I realise that Android started to set SELinux to enforce from Lollipop (5.0) so this should be the problem. (We can use dmesg|grep audit to check if the problem really related to SELinux. ) I compared a random file under /data/data to the file we just created:
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root@hammerhead:/ # ls -Z /data/data/de.robv.android.xposed.installer/cache/repo_cache.db -rw-rw---- u0_a379 u0_a379 u:object_r:app_data_file:s0:c512,c768 repo_cache.db root@hammerhead:/ # ls -Z /data/data/de.robv.android.xposed.installer/conf/modules.list -rw------- root root u:object_r:app_data_file:s0 modules.list |
So all we need to do is to change this conf/modules.list to u:object_r:app_data_file:s0:c512,c768 as well
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root@hammerhead:/ # restorecon /data/data/de.robv.android.xposed.installer/conf/modules.list |
restorecon is a applet shipped with toybox, we can also use chcon to manually set SELinux context.
解決Android 6.0 Marshmallow中Xposed的模塊列表為空
升級Nexus5 到6.0.1 (M4B30Z, Dec 2016)之後，Xposed的模塊列表變成空的了，所有的模塊也都失效了。沒有xposed，怎麼種莊稼。於是我打開logcat看了一眼。
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01-10 21:35:02.682 294 294 E Xposed : Cannot load any modules because /data/data/de.robv.android.xposed.installer/conf/modules.list was not found |
rovo89在xda的QA帖中說一般情況下這個文件會在啟用任意一個模塊後創建。然而現在它並沒有被創建。於是我去建了一個，然後chmod 644以及chown到應用到uid（可以通過啟動應用之後ps|grep xposed查看uid，形如u0_a??），重啟了一下，再瞄了一眼logcat。
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01-10 21:29:39.485 295 295 E Xposed : Errors during Xposed initialization 01-10 21:29:39.485 295 295 E Xposed : java.io.IOException: Permission denied while reading /data/data/de.robv.android.xposed.installer/conf/modules.list |
好像哪裡不對
想起來Android從蘿莉棒開始SELinux就是enforce了，所以大概是這個問題。（我們可以通過dmesg|grep audit來查看被SELinux過濾的各種奇怪操作。）於是看了一下默認的文件context和我們剛創建的文件的context：
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root@hammerhead:/ # ls -Z /data/data/de.robv.android.xposed.installer/cache/repo_cache.db -rw-rw---- u0_a379 u0_a379 u:object_r:app_data_file:s0:c512,c768 repo_cache.db root@hammerhead:/ # ls -Z /data/data/de.robv.android.xposed.installer/conf/modules.list -rw------- root root u:object_r:app_data_file:s0 modules.list |
那麼我們把這個conf/modules.list也改成u:object_r:app_data_file:s0:c512,c768這個context好了
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root@hammerhead:/ # restorecon /data/data/de.robv.android.xposed.installer/conf/modules.list |
restorecon是toybox中帶的一個applet，我們也可以用chcon來手動更改context。
搭建一個apt二進位倉庫
倉庫中有openresty (nginx), php (7.0-7.1), mysql (5.7-8.0), nmap等，詳見這裡；
適用於Ubuntu 16.04 32位或64位；一鍵配置腳本
wget https://dl.yooooo.us/build/setup.sh -O -|sudo bash
IP Geolocation and ASN: 顯示GeoIP和ASN的Chrome插件
寫了一個顯示GeoIP和ASN的Chrome插件，通過請求ip.yooooo.us得到GeoIP（Maxmind資料庫）和ASN信息（自己爬的），怕隱私泄露的可以自己搭一個。
效果如圖：
下載地址：
https://dl.yooooo.us/share/IP_Geo_Asn.zip
下載後解壓，在Chrome->插件 中選擇「載入已解壓的擴展程序」
