从Aliexpress上剁了一个SIM800L模块，长这样：
VDD接TTL参考电平，需要串口输出5v（比如51）就接5v，需要输出3.3v（比如树莓派）就接3.3v。
要注意的是TTL需要交叉连接，即这个PCB板上的TxD和RxD应该分别接树莓派上的RxD和TxD。
浪费了我一晚上的青春。
cloudflare-partner-cli: using CNAME on cloudflare
This is a CLI program that let you set CNAME to use Cloudflare using the partner program.
Both Python2.x and Python3.x is supported. No extra library is needed.
To use Chinese menu, set environment variable LANG to use UTF-8 (for example, zh_CN.UTF-8).
Usage
- Apply for partner program at https://www.cloudflare.com/partners/.
- Clone this repository or download script.
- Run
python ./cloudflare-partner-cli.py. - Enter your
host_key. You can get it here. - Enter the account you use to manage domains (your personal account, not partner login account). User key is stored in
.cfhost. - Follow the instructions on screen.
Note
- Value of
resolve_tohas to be DNS record (for example: google.com) instead of IP address.
cloudflare-partner-cli: 使用CNAME方式接入Cloudflare
使用Cloudflare partner功能用CNAME方式接入cloudflare。
你可以使用Python2.x或者Python3.x。无需安装任何依赖。
如需使用中文菜单，请将环境变量的LANG设置为使用UTF-8 (比如zh_CN.UTF-8)。
使用方法
- 申请Cloudflare partner计划 https://www.cloudflare.com/partners/ 。
- clone本项目或者直接下载脚本。
- 运行
python ./cloudflare-partner-cli.py。 - 输入
host_key。可以从这里获得。 - 输入要用来管理域名的账号 (你的个人账号，不是partner账号)。账户信息保存在
.cfhost文件中。 - 按照屏幕提示操作。
注意
源站地址必须为DNS记录，如google.com，不能填写IP地址。
解密shc生成的mips架构二进制文件
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.
解决Android 6.0 Marshmallow中Xposed的模块列表为空
升级Nexus5 到6.0.1 (M4B30Z, Dec 2016)之后，Xposed的模块列表变成空的了，所有的模块也都失效了。没有xposed，怎么种庄稼。于是我打开logcat看了一眼。
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1 |
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帖中说一般情况下这个文件会在启用任意一个模块后创建。然而现在它并没有被创建。于是我去建了一个，然后chmod 644以及chown到应用到uid（可以通过启动应用之后ps|grep xposed查看uid，形如u0_a??），重启了一下，再瞄了一眼logcat。
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1 2 |
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 |
好像哪里不对
想起来Android从萝莉棒开始SELinux就是enforce了，所以大概是这个问题。（我们可以通过dmesg|grep audit来查看被SELinux过滤的各种奇怪操作。）于是看了一下默认的文件context和我们刚创建的文件的context：
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1 2 3 4 |
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 |
那么我们把这个conf/modules.list也改成u:object_r:app_data_file:s0:c512,c768这个context好了
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root@hammerhead:/ # restorecon /data/data/de.robv.android.xposed.installer/conf/modules.list |
restorecon是toybox中带的一个applet，我们也可以用chcon来手动更改context。
