网络 | RainEggplant

Let’s Encrypt: 让Certbot续期证书后重新加载Nginx

普通用户使用 Let's Encrypt 证书有 90 天有效期的限制，但通过 Certbot 可以实现证书的自动续期。不过，更新证书后必须重新加载 nginx 配置文件才能生效。遗憾的是，Certbot 的默认定时任务并没有包含重载配置文件的命令。

为了避免未重载配置文件导致的服务不可用，我们需要对 Certbot 任务配置文件做出修改。其位于 /etc/cron.d/certbot.

默认配置大概是这样：

# /etc/cron.d/certbot: crontab entries for the certbot package
#
# Upstream recommends attempting renewal twice a day
#
# Eventually, this will be an opportunity to validate certificates
# haven't been revoked, etc.  Renewal will only occur if expiration
# is within 30 days.
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

0 */12 * * * root test -x /usr/bin/certbot -a \! -d /run/systemd/system && perl -e 'sleep int(rand(3600))' && certbot -q renew

# /etc/cron.d/certbot: crontab entries for the certbot package

# Upstream recommends attempting renewal twice a day

# Eventually, this will be an opportunity to validate certificates

# haven't been revoked, etc. Renewal will only occur if expiration

# is within 30 days.

SHELL=/bin/sh

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

0 */12 * * * root test -x /usr/bin/certbot -a \! -d /run/systemd/system && perl -e 'sleep int(rand(3600))' && certbot -q renew

我们只需要将向最后一行命令末尾添加 --renew-hook "/etc/init.d/nginx reload" 即可。即：

0 */12 * * * root test -x /usr/bin/certbot -a \! -d /run/systemd/system && perl -e 'sleep int(rand(3600))' && certbot -q renew --renew-hook "/etc/init.d/nginx reload"

1	0 /12 * * root test -x /usr/bin/certbot -a \! -d /run/systemd/system && perl -e 'sleep int(rand(3600))' && certbot -q renew --renew-hook "/etc/init.d/nginx reload"

--renew-hook 后面的命令会在每次成功续期证书后运行。此处即为重新加载 nginx 配置文件。

参考链接：https://www.guyrutenberg.com/2017/01/01/lets-encrypt-reload-nginx-after-renewing-certificates/

RainEggplant 2018-09-30 没有评论

Seventeen主题404页面错误的解决办法

使用这款Seventeen主题有很久了，但是一直有一个问题，就是它的404页面有bug。对于某些不存在的链接，它并不显示预置的404页面，而显示的是网站主页。今天研究了下代码，给出我的解决方案：

在Seventeen主题的路径下新建一个叫做404.php的文件，输入以下代码：

<?php get_header(); ?>

		<?php
		if (O('sidebar-pos') == 'left' || O('no-sidebar')) get_sidebar();
		if (O('sidebar-card') && O('sidebar-pos') == 'right' && !O('no-sidebar')) 	get_template_part('module', 'cardtop');
		?>

		<div id="content" class="wp">
			<?php if (O('slider')) get_template_part('module', 'slider');
			get_template_part('content', 'none');
			?>
	
		</div><!-- #content.wp.center -->

		<?php if (O('sidebar-pos') == 'right' && !O('no-sidebar')) get_sidebar(); ?>
	
	</div><!-- #container.wc.center -->
	
	<script type="text/javascript">nanobar.go(60);</script>
	
<?php get_footer(); ?>

<?php get_header(); ?>

<?php

if (O('sidebar-pos') == 'left' || O('no-sidebar')) get_sidebar();

if (O('sidebar-card') && O('sidebar-pos') == 'right' && !O('no-sidebar')) get_template_part('module', 'cardtop');

<?php if (O('slider')) get_template_part('module', 'slider');

get_template_part('content', 'none');

</div>

<?php if (O('sidebar-pos') == 'right' && !O('no-sidebar')) get_sidebar(); ?>

</div>

<?php get_footer(); ?>

（莫名多出了一个</div>标签，但是原作者是这么写的，就不去深究了）

RainEggplant 2018-05-2 没有评论

【WordPress小改】将没有Gravatar但使用QQ邮箱的用户的头像替换为QQ头像并缓存

Gravatar在中国使用的人很少，所以评论里常常会看见顶着Gravatar的丑丑的默认头像的人。但是，这部分人有很多都使用QQ邮箱，于是我想到了可以用他们的QQ头像代替。

三年前我写了一个放在functions.php里的小函数来实现这个功能，但是有些Bug。今天终于重写了一下，大家可以拿去用。

具体功能就是将没有Gravatar但使用QQ邮箱的用户的头像替换为QQ头像，我使用的是 http://q2.qlogo.cn（q2可以换成q1, q3, ...）来获取，但是我没有辨别出它对于QQ邮箱那个参数使用的加密方式，所以只能以明文的形式去请求QQ头像（貌似本来是同时支持加密和明文的）。因此，为了保护用户隐私，我只能将这些头像按照加密的文件名存到本地，顺便也就添加了Gravatar的缓存功能。

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RainEggplant 2018-05-2 7个评论

VB.net:Post登陆获取Cookie访问指定页面代码

Imports System.Net
Imports System.IO
Imports System.Text

Public Class Form1
    Const ConnectURL = "http://www.raineggplant.com/logon.php"
    Const HomeURL = "http://www.raineggplant.com"

    Private Function RegularPage(ByVal URL As String, ByVal CookieJar As CookieContainer) As String
        '携带CookieJar中的Cookie访问URL
        Dim reader As StreamReader
        Dim Request As HttpWebRequest = HttpWebRequest.Create(URL)
        Request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14"
        Request.AllowAutoRedirect = False
        Request.CookieContainer = CookieJar
        Dim Response As HttpWebResponse = Request.GetResponse()
        reader = New StreamReader(Response.GetResponseStream())
        Return reader.ReadToEnd()
        Response.Close()
    End Function

    Private Sub LogonPage(ByVal URL As String, ByRef CookieJar As CookieContainer, ByVal PostData As String)
        '访问URL获取Cookie
        Dim reader As StreamReader
        Dim Request As HttpWebRequest = HttpWebRequest.Create(URL)
        Request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14"
        Request.CookieContainer = CookieJar
        Request.AllowAutoRedirect = False
        Request.ContentType = "application/x-www-form-urlencoded"
        PostData = "username=isiria&password=ceciestunmdp"
        Request.Method = "POST"
        Request.ContentLength = PostData.Length
        Dim requestStream As Stream = Request.GetRequestStream()
        Dim postBytes As Byte() = Encoding.ASCII.GetBytes(PostData)
        requestStream.Write(postBytes, 0, postBytes.Length)
        requestStream.Close()
        Dim Response As HttpWebResponse = Request.GetResponse()
        For Each tempCookie In Response.Cookies
            CookieJar.Add(tempCookie)
        Next
        reader = New StreamReader(Response.GetResponseStream())
        Response.Close()
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim CookieJar As New CookieContainer
        Dim PostData As String
        Try
            'Logon
            PostData = "username=admin&password=password"
            LogonPage(ConnectURL, CookieJar, PostData)
            'Homepage
            RichTextBox1.AppendText(RegularPage(HomeURL, CookieJar))
        Catch ex As Exception
            MessageBox.Show(ex.Message.ToString)
        End Try
    End Sub
End Class

Imports System.Net

Imports System.IO

Imports System.Text

Public Class Form1

Const ConnectURL = "http://www.raineggplant.com/logon.php"

Const HomeURL = "http://www.raineggplant.com"

Private Function RegularPage(ByVal URL As String, ByVal CookieJar As CookieContainer) As String

'携带CookieJar中的Cookie访问URL

Dim reader As StreamReader

Dim Request As HttpWebRequest = HttpWebRequest.Create(URL)

Request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14"

Request.AllowAutoRedirect = False

Request.CookieContainer = CookieJar

Dim Response As HttpWebResponse = Request.GetResponse()

reader = New StreamReader(Response.GetResponseStream())

Return reader.ReadToEnd()

Response.Close()

End Function

Private Sub LogonPage(ByVal URL As String, ByRef CookieJar As CookieContainer, ByVal PostData As String)

'访问URL获取Cookie

Dim reader As StreamReader

Dim Request As HttpWebRequest = HttpWebRequest.Create(URL)

Request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.14) Gecko/20080404 Firefox/2.0.0.14"

Request.CookieContainer = CookieJar

Request.AllowAutoRedirect = False

Request.ContentType = "application/x-www-form-urlencoded"

PostData = "username=isiria&password=ceciestunmdp"

Request.Method = "POST"

Request.ContentLength = PostData.Length

Dim requestStream As Stream = Request.GetRequestStream()

Dim postBytes As Byte() = Encoding.ASCII.GetBytes(PostData)

requestStream.Write(postBytes, 0, postBytes.Length)

requestStream.Close()

Dim Response As HttpWebResponse = Request.GetResponse()

For Each tempCookie In Response.Cookies

CookieJar.Add(tempCookie)

reader = New StreamReader(Response.GetResponseStream())

Response.Close()

End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim CookieJar As New CookieContainer

Dim PostData As String

Try

'Logon

PostData = "username=admin&password=password"

LogonPage(ConnectURL, CookieJar, PostData)

'Homepage

RichTextBox1.AppendText(RegularPage(HomeURL, CookieJar))

Catch ex As Exception

MessageBox.Show(ex.Message.ToString)

End Try

End Sub

End Class

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RainEggplant 2015-08-21 没有评论

Openshift常用命令

检测本地环境配置：rhc-chk

显示用户信息： rhc-user-info

创建个人域：rhc-create-domain ：

创建应用：rhc-create-app

删除应用：rhc app delete -a <app_name>

应用控制，可以开始、停止、重起应用。还可以添加mysql数据库等： rhc-ctl-app

应用备份：rhc-snapshot

查看应用日志：rhc-tail-files 阅读全文→

RainEggplant 2014-06-14 没有评论

分类目录

文章归档

Let’s Encrypt: 让Certbot续期证书后重新加载Nginx

Seventeen主题404页面错误的解决办法

【WordPress小改】将没有Gravatar但使用QQ邮箱的用户的头像替换为QQ头像并缓存

VB.net:Post登陆获取Cookie访问指定页面代码

Openshift常用命令

Openshift常用命令

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