(摘) ntfy PUT/POST消息到您的手机上

2023年5月5日 in ntfy 约1400字，阅读约3 分钟。

打赏发消息给我

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在手机上安装好客户端，订阅服务器消息，任何人将可以发送消息到您的手机上。服务器可以自建，也可以用官网，使用简单。

主页：https://ntfy.sh
GitHub（服务端）：https://github.com/binwiederhier/ntfy
GitHub（安卓端）：https://github.com/binwiederhier/ntfy-android
文档：https://docs.ntfy.sh/publish/

当然，它也有苹果客户端。可能苹果消息机制的原因，我没有收到信息。
服务端居然是用Golang写的。

发送消息： curl -d “Your backup is done” ntfy.sh/mytopic
这里的mytopic就是手机上设置的主题名称

比如我订单了ease主题在手机端，您可以发送： curl -d “你好，兄弟” ntfy.sh/ease 我将实时的接收到消息。
想想有什么用呢？比如互订消息用来聊天？当然一些通知信息很简单(之前都是通过微信接收)

基于IP地址的帐户消息限制每天500条，应该够用了。

视频演示：https://docs.ntfy.sh/static/img/android-video-overview.mp4

几种发送方式：命令行：curl -d “Backup successful 😀” ntfy.sh/mytopic
JavaScript:

fetch('https://ntfy.sh/mytopic', {
  method: 'POST', // PUT works too
  body: 'Backup successful 😀'
})

Golang: http.Post(“https://ntfy.sh/mytopic", “text/plain”, strings.NewReader(“Backup successful 😀”)) …

更复杂一点，主要是标题，图标等。看起来是在消息头上做的文章：

req, _ := http.NewRequest("POST", "https://ntfy.sh/phil_alerts",
    strings.NewReader("Remote access to phils-laptop detected. Act right away."))
req.Header.Set("Title", "Unauthorized access detected")
req.Header.Set("Priority", "urgent")
req.Header.Set("Tags", "warning,skull")
http.DefaultClient.Do(req)

在PowerShell中使用:

$Request = @{
  Method = "POST"
  URI = "https://ntfy.sh/phil_alerts"
  Headers = @{
    Title = "Unauthorized access detected"
    Priority = "urgent"
    Tags = "warning,skull"
  }
  Body = "Remote access to phils-laptop detected. Act right away."
}             
Invoke-RestMethod @Request

在命令行中使用：

curl \
  -H "Title: Unauthorized access detected" \
  -H "Priority: urgent" \
  -H "Tags: warning,skull" \
  -d "Remote access to phils-laptop detected. Act right away." \
  ntfy.sh/phil_alerts

看起来还可以发送链接和图片

curl \
  -H "Click: https://home.nest.com/" \
  -H "Attach: https://nest.com/view/yAxkasd.jpg" \
  -H "Actions: http, Open door, https://api.nest.com/open/yAxkasd, clear=true" \
  -H "Email: phil@example.com" \
  -d "There's someone at the door. 🐶

Please check if it's a good boy or a hooman. 
Doggies have been known to ring the doorbell." \
  ntfy.sh/mydoorbell

还有预订消息(定时提醒)，可以设置10秒至3天内。
curl -H “At: tomorrow, 10am” -d “Good morning” ntfy.sh/hello

应用场景：

SSH登陆警报： nano /etc/pam.d/sshd

# at the end of the file
session optional pam_exec.so /usr/bin/ntfy-ssh-login.sh

nano /usr/bin/ntfy-ssh-login.sh

#!/bin/bash
if [ "${PAM_TYPE}" = "open_session" ]; then
  curl \
    -H prio:high \
    -H tags:warning \
    -d "SSH login: ${PAM_USER} from ${PAM_RHOST}" \
    ntfy.sh/alerts
fi

用golang来作一个消息监听

package main

import (
	"bufio"
	"log"
	"net/http"
)

func main() {
	resp, err := http.Get("https://ntfy.sh/ease/json")
	if err != nil {
		log.Fatal(err)
	}
	defer resp.Body.Close()
	scanner := bufio.NewScanner(resp.Body)
	for scanner.Scan() {
		println(scanner.Text())
	}
}

返回信息：

{"id":"jsPi3Cf4m99s","time":1684723464,"event":"open","topic":"ease"}
{"id":"YX84NAtX3N29","time":1684723509,"event":"keepalive","topic":"ease"}
{"id":"gaXfj5IOS5TT","time":1684723520,"expires":1684766720,"event":"message","topic":"ease","title":"测试的主题","message":"测试的内容","priority":4,"tags":["grin"]}
{"id":"prIy5Jrwxgxu","time":1684723554,"event":"keepalive","topic":"ease"}
{"id":"QCWWznwNzvsu","time":1684723599,"event":"keepalive","topic":"ease"}

通过轮循的方式获取信息： ntfy.sh/mytopic/json?poll=1
提取缓存的消息：
curl -s “ntfy.sh/mytopic/json?since=10m”
curl -s “ntfy.sh/mytopic/json?since=1645970742”
curl -s “ntfy.sh/mytopic/json?since=nFS3knfcQ1xe”

2023.5.22

与Autohotkey结合，通过发送消息来关闭或重启我的电脑。

2023.6.10

https://gotify.net/ 一个有点类似的项目

2023.6.11

在服务器搬迁后，写入定时任务/etc/crontb中，让它每天23点报告服务器情况：0 23 * * * * root /home/ease/tools/ease-sysinfo | curl -X POST –data-binary @- https://ntfy.sh/ease
服务器相关输出在ease-sysinfo脚本中