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<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<title>Zinway's Blog</title>
<subtitle>Talk about the Soy Sauce</subtitle>
<link href="/atom.xml" rel="self"/>
<link href="http://zin.so/"/>
<updated>2016-08-29T05:38:34.000Z</updated>
<id>http://zin.so/</id>
<author>
<name>Zinway</name>
</author>
<generator uri="http://hexo.io/">Hexo</generator>
<entry>
<title>交换CapsLock键和Control键</title>
<link href="http://zin.so/2015/05/04/swapping-caps-lock-and-control/"/>
<id>http://zin.so/2015/05/04/swapping-caps-lock-and-control/</id>
<published>2015-05-04T07:33:33.000Z</published>
<updated>2016-08-29T05:38:34.000Z</updated>
<content type="html"><![CDATA[<p>今天终于<strong>狠下心来</strong>交换CapsLock键和Control键，Google了下发现几年前的OSX就已经支持在键盘设置里面直接修改了。<br>具体修改方法如下：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">系统偏好设置 -> 键盘 -> 修饰键 -> 修改CapsLock键和Control键对应的映射</div></pre></td></tr></table></figure></p>
<p>附一些Unix系统快捷键，这些命令在Vim／BashShell等涉及到文本操作的情景下都可以使用。<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div></pre></td><td class="code"><pre><div class="line">Ctrl+p shell中上一个命令，或者 文本中移动到上一行</div><div class="line">Ctrl+n shell中下一个命令，或者 文本中移动到下一行</div><div class="line">Ctrl+r 往后搜索历史命令</div><div class="line">Ctrl+s 往前搜索历史命令</div><div class="line">Ctrl+f 光标前移</div><div class="line">Ctrl+b 光标后退</div><div class="line">Ctrl+a 到行首</div><div class="line">Ctrl+e 到行尾</div><div class="line">Ctrl+d 删除一个字符，删除一个字符，相当于通常的Delete键</div><div class="line">Ctrl+h 退格删除一个字符，相当于通常的Backspace键</div><div class="line">Ctrl+u 删除到行首</div><div class="line">Ctrl+k 删除到行尾</div><div class="line">Ctrl+l 类似 clear 命令效果</div><div class="line">Ctrl+y 粘贴</div></pre></td></tr></table></figure></p>
]]></content>
<summary type="html">
<p>今天终于<strong>狠下心来</strong>交换CapsLock键和Control键，Google了下发现几年前的OSX就已经支持在键盘设置里面直接修改了。<br>具体修改方法如下：<br><figure class="highlight plain"><table>
</summary>
<category term="Shell" scheme="http://zin.so/categories/Shell/"/>
<category term="Mac OSX" scheme="http://zin.so/tags/Mac-OSX/"/>
<category term="Vim" scheme="http://zin.so/tags/Vim/"/>
</entry>
<entry>
<title>办公室自动翻墙</title>
<link href="http://zin.so/2014/12/22/auto-break-gfw/"/>
<id>http://zin.so/2014/12/22/auto-break-gfw/</id>
<published>2014-12-22T10:28:44.000Z</published>
<updated>2016-08-29T05:38:34.000Z</updated>
<content type="html"><![CDATA[<p>引子：<br>凑巧的是我5月中旬给公司搭了个翻墙环境来加速Google和Gmail的访问速度，然后5月27号Google就开始被封了 Orz ，然后就正好用上了这一套系统，后面就是不断地完善和优化，然后最近有空就Blog出来。</p>
<p>需求:</p>
<ol>
<li>希望能够尽量透明地免设置地实现自动翻墙；</li>
<li>尽量不影响墙内站点的访问速度；</li>
<li>尽可能地便于维护和更新。</li>
</ol>
<p>整个自动翻墙分为这么几块：</p>
<ol>
<li>VPN（翻墙的跳板，我们这边选择了OpenVPN）；</li>
<li>路由（定制墙外路由以及NAT，实现“自动”）；</li>
<li>DNS（防止DNS污染以及CDN的正确解析）。</li>
</ol>
<h2 id="VPN-Server搭建"><a href="#VPN-Server搭建" class="headerlink" title="VPN Server搭建"></a>VPN Server搭建</h2><p>OpenVPN的搭建可以参考这一篇文章：<a href="http://zin.so/2014/08/21/how-to-install-openvpn-server-on-centos-7/">在CentOS 7上安装OpenVPN Server</a></p>
<h2 id="路由定制及NAT"><a href="#路由定制及NAT" class="headerlink" title="路由定制及NAT"></a>路由定制及NAT</h2><p>使用OpenVPN Server将墙外的IP列表push给Client，在办公室网关上启一个OpenVPN Client并且开转发和NAT。<br>为了便于实现路由表的更新，我们使用了 client-config-dir，也就是 ccd 以及 push-continuation，将需要 push 的路由表放入 ccd 之中，配合 management console, 在更新了ccd 之中的路由表之后在 console 里面kill掉相关的client，这样 client 就会自动重连并且得到新的路由表，client 和 server 均无需重启。<br>翻墙路由表可参考<a href="https://github.com/zinw/VPN" target="_blank" rel="external">GFW 境外列表（部分）</a>。</p>
<h2 id="DNS转发及优化"><a href="#DNS转发及优化" class="headerlink" title="DNS转发及优化"></a>DNS转发及优化</h2><p>为了方便管理和速度上的保证，我们没有直接使用bind，而是用dnsmasq来转发。<br>使用iptables来过滤DNS污染可以参考这一篇文章：<a href="http://zin.so/2014/12/19/anti-dns-poison-with-iptables/">通过iptables去除DNS污染</a><br>dnsmasq默认把DNS丢给OpenDNS，一些CDN域名用dnsmasq.server的配置文件来丢给国内的DNS，一些需要定制IP地址的就用dnsmasq.address配置文件来个性化。</p>
<h2 id="持续维护"><a href="#持续维护" class="headerlink" title="持续维护"></a>持续维护</h2><p>这一套系统我们需要维护2个表：<br>1个墙外路由表（一些个性化的墙外网站的访问需求）；<br>1个dnsmasq.server表（主要是CDN域名，这个只能发现以后一点一点加）。</p>
]]></content>
<summary type="html">
<p>引子：<br>凑巧的是我5月中旬给公司搭了个翻墙环境来加速Google和Gmail的访问速度，然后5月27号Google就开始被封了 Orz ，然后就正好用上了这一套系统，后面就是不断地完善和优化，然后最近有空就Blog出来。</p>
<p>需求:</p>
<ol>
<li
</summary>
<category term="Network" scheme="http://zin.so/categories/Network/"/>
<category term="DNS" scheme="http://zin.so/tags/DNS/"/>
<category term="VPN" scheme="http://zin.so/tags/VPN/"/>
<category term="NAT" scheme="http://zin.so/tags/NAT/"/>
</entry>
<entry>
<title>通过iptables去除DNS污染</title>
<link href="http://zin.so/2014/12/19/anti-dns-poison-with-iptables/"/>
<id>http://zin.so/2014/12/19/anti-dns-poison-with-iptables/</id>
<published>2014-12-19T08:26:07.000Z</published>
<updated>2016-08-29T05:38:34.000Z</updated>
<content type="html"><![CDATA[<p><strong>GFW的DNS劫持原理</strong>说起来挺简单，GFW对境外DNS的劫持，是在发现你请求敏感域名的DNS记录时，伪装成你请求的DNS返回一个污染的数据包给你的解析器，但并不会丢弃你向境外DNS的请求，也不会丢弃境外DNS返回的正确解析结果，他只是让错误的数据抢先回来欺骗了你的解析器而已，毕竟他直接从国内给你发污染数据怎么都比国外DNS返回正确数据要快，而解析器在先收到了欺骗数据包之后，就不会再管后面返回的正确数据了，这样你就被DNS劫持了。</p>
<p><strong>一般的解决办法</strong>就是通过VPN通道访问DNS服务器，以获得干净的解析结果。本文的解决方案：我们可以在iptables的防火墙规则中，检测UDP的源端口为53的数据（DNS查询是通过UDP查询服务器的53端口实现的），一旦发现解析数据中包含有被GFW常用的用于DNS污染和劫持的IP，就丢弃这个数据包，对dnsmasq这些解析器来说污染的数据包根本就不会到达（本文涉及的iptables规则会抢先于任何应用先处理网络数据），等正确的境外DNS返回的数据到达后并不会被过滤，这样dnsmasq就获得了正确的DNS解析数据。</p>
<p>首先我们要找到被GFW用于DNS污染和劫持的IP，目前搜集并统计到的无效IP（参考<a href="https://github.com/clowwindy/ChinaDNS/blob/master/iplist.txt" target="_blank" rel="external">clowwindy的iplist.txt</a>）如下：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div><div class="line">46</div><div class="line">47</div><div class="line">48</div></pre></td><td class="code"><pre><div class="line">118.5.49.6</div><div class="line">128.121.126.139</div><div class="line">159.106.121.75</div><div class="line">169.132.13.103</div><div class="line">188.5.4.96</div><div class="line">189.163.17.5</div><div class="line">192.67.198.6</div><div class="line">197.4.4.12</div><div class="line">202.106.1.2</div><div class="line">202.181.7.85</div><div class="line">203.161.230.171</div><div class="line">203.98.7.65</div><div class="line">207.12.88.98</div><div class="line">208.56.31.43</div><div class="line">209.145.54.50</div><div class="line">209.220.30.174</div><div class="line">209.36.73.33</div><div class="line">209.85.229.138</div><div class="line">211.94.66.147</div><div class="line">213.169.251.35</div><div class="line">216.221.188.182</div><div class="line">216.234.179.13</div><div class="line">23.89.5.60</div><div class="line">243.185.187.39</div><div class="line">249.129.46.48</div><div class="line">253.157.14.165</div><div class="line">37.61.54.158</div><div class="line">4.36.66.178</div><div class="line">46.82.174.68</div><div class="line">49.2.123.56</div><div class="line">54.76.135.1</div><div class="line">59.24.3.173</div><div class="line">64.33.88.161</div><div class="line">64.33.99.47</div><div class="line">64.66.163.251</div><div class="line">65.104.202.252</div><div class="line">65.160.219.113</div><div class="line">66.45.252.237</div><div class="line">72.14.205.104</div><div class="line">72.14.205.99</div><div class="line">74.125.127.102</div><div class="line">74.125.155.102</div><div class="line">74.125.39.102</div><div class="line">74.125.39.113</div><div class="line">77.4.7.92</div><div class="line">78.16.49.15</div><div class="line">8.7.198.45</div><div class="line">93.46.8.89</div></pre></td></tr></table></figure></p>
<p>后面需要用到这些IP的16进制，本文推荐个转换工具netmask（附<a href="https://github.com/zinw/VPN/raw/master/netmask_2.3.12.tar.gz" target="_blank" rel="external">netmask源码包</a>）。<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div></pre></td><td class="code"><pre><div class="line"> # netmask --help</div><div class="line">This is netmask, an address netmask generation utility</div><div class="line">Usage: netmask spec [spec ...]</div><div class="line"> -h, --helpPrint a summary of the options</div><div class="line"> -v, --versionPrint the version number</div><div class="line"> -d, --debugPrint status/progress information</div><div class="line"> -s, --standardOutput address/netmask pairs</div><div class="line"> -c, --cidrOutput CIDR format address lists</div><div class="line"> -i, --ciscoOutput Cisco style address lists</div><div class="line"> -r, --rangeOutput ip address ranges</div><div class="line"> -x, --hexOutput address/netmask pairs in hex</div><div class="line"> -o, --octalOutput address/netmask pairs in octal</div><div class="line"> -b, --binaryOutput address/netmask pairs in binary</div><div class="line"> -n, --nodnsDisable DNS lookups for addresses</div><div class="line">Definitions:</div><div class="line"> a spec can be any of:</div><div class="line"> address</div><div class="line"> address:address</div><div class="line"> address:+address</div><div class="line"> address/mask</div><div class="line"> an address can be any of:</div><div class="line"> NULLCMD=decimal number</div><div class="line"> 0Noctal number</div><div class="line"> 0xNhex number</div><div class="line"> N.N.N.Ndotted quad</div><div class="line"> hostname dns domain name</div><div class="line"> a mask is the number of bits set to one from the left</div></pre></td></tr></table></figure></p>
<p>用下面的命令进行点分十进制转十六进制处理：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">netmask -x `cat iplist.txt` |cut -d/ -f1 |cut -dx -f2</div></pre></td></tr></table></figure></p>
<p>结果如下：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div><div class="line">46</div><div class="line">47</div><div class="line">48</div></pre></td><td class="code"><pre><div class="line">042442b2</div><div class="line">0807c62d</div><div class="line">1759053c</div><div class="line">253d369e</div><div class="line">2e52ae44</div><div class="line">31027b38</div><div class="line">364c8701</div><div class="line">3b1803ad</div><div class="line">402158a1</div><div class="line">4021632f</div><div class="line">4042a3fb</div><div class="line">4168cafc</div><div class="line">41a0db71</div><div class="line">422dfced</div><div class="line">480ecd63</div><div class="line">480ecd68</div><div class="line">4a7d2766</div><div class="line">4a7d2771</div><div class="line">4a7d7f66</div><div class="line">4a7d9b66</div><div class="line">4d04075c</div><div class="line">4e10310f</div><div class="line">5d2e0859</div><div class="line">76053106</div><div class="line">80797e8b</div><div class="line">9f6a794b</div><div class="line">a9840d67</div><div class="line">bc050460</div><div class="line">bda31105</div><div class="line">c043c606</div><div class="line">c504040c</div><div class="line">ca6a0102</div><div class="line">cab50755</div><div class="line">cb620741</div><div class="line">cba1e6ab</div><div class="line">cf0c5862</div><div class="line">d0381f2b</div><div class="line">d1244921</div><div class="line">d155e58a</div><div class="line">d1913632</div><div class="line">d1dc1eae</div><div class="line">d35e4293</div><div class="line">d5a9fb23</div><div class="line">d8ddbcb6</div><div class="line">d8eab30d</div><div class="line">f3b9bb27</div><div class="line">f9812e30</div><div class="line">fd9d0ea5</div></pre></td></tr></table></figure></p>
<p>然后就直接用iptables匹配包含这些ip的dns包并进行丢弃：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|042442b2|" --from 60 --to 180 -j DROP</div></pre></td></tr></table></figure></p>
<p>简单解释下，-m string表示启用string模块进行匹配，–algo bm表示启用贝叶(Boyer-Moore)字符串搜索算法，另一种算法是kmp(Knuth-Pratt-Morris)，具体应该只是效率和不同应用的区别，算法原理我就不细究了。<br>–hex-string就是要匹配的IP地址的HEX格式了，注意这里前面不要有0x表示16进制了，直接写16进制数据就行，后面跟着的就是IP地址的16进制格式。<br>–from 60 –to 180都是表示搜索的偏置范围(offset)，从第60 byte开始到180 byte结束，一般来说DNS返回包的长度很少有超过180字节，而IP值的位置因为协议格式的关系，基本上不可能出现在60字节之前，所以指定这个范围是足够的，同时也可以大大减轻搜索算法的运算压力。如果你担心有什么奇葩DNS返回的结果在这范围之外，删除这两个偏置选项就行了，这样会默认搜索整个字符串，但相应的搜索消耗的CPU资源就更多了。<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div><div class="line">46</div><div class="line">47</div><div class="line">48</div></pre></td><td class="code"><pre><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|042442b2|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|0807c62d|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|1759053c|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|253d369e|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|2e52ae44|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|31027b38|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|364c8701|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|3b1803ad|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|402158a1|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|4021632f|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|4042a3fb|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|4168cafc|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|41a0db71|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|422dfced|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|480ecd63|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|480ecd68|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|4a7d2766|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|4a7d2771|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|4a7d7f66|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|4a7d9b66|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|4d04075c|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|4e10310f|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|5d2e0859|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|76053106|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|80797e8b|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|9f6a794b|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|a9840d67|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|bc050460|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|bda31105|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|c043c606|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|c504040c|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|ca6a0102|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|cab50755|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|cb620741|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|cba1e6ab|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|cf0c5862|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|d0381f2b|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|d1244921|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|d155e58a|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|d1913632|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|d1dc1eae|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|d35e4293|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|d5a9fb23|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|d8ddbcb6|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|d8eab30d|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|f3b9bb27|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|f9812e30|" --from 60 --to 180 -j DROP</div><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m string --algo bm --hex-string "|fd9d0ea5|" --from 60 --to 180 -j DROP</div></pre></td></tr></table></figure></p>
<p>每个IP分别写一条这样的规则，然后就用你自己熟悉的方式来处理这些iptables规则。</p>
<hr>
<p><strong>More~</strong><br>iptables过滤空包：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">iptables -t mangle -I PREROUTING -p udp --sport 53 -m u32 --u32 "0&0x0F000000=0x05000000 && 0>>22&0x3C@8&0x810F=0x8000 && 0>>22&0x3C@12&0xFFFF=0x0000" -j DROP</div></pre></td></tr></table></figure></p>
<p>对关键部分解释下：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">0>>22&0x3C@8&0x810F=0x8000</div></pre></td></tr></table></figure></p>
<p>“0>>22&0x3C”这部分是很常用的一个规则，你在别的地方也应该经常看到，表示取出IP报文头的长度，后面的@表示跳过这么多长度，也就是跳过IP头到UDP头部分。<br>8表示从第8个字节开始抓4个字节，其中第10个字节的第一位如果是1就表示这是一个响应包，0对应的是查询报，这个我们不用管；<br>第十个字节的最低位是RD位，劫持包的RD位是0；<br>第11个字节的低4位就是Reply Code的位置。<br>将这4个字节和0x810F做与操作就提出了响应标志位，RD位和Reply Code的值，判断出是一个RD=0，Reply Code为无错误的响应包，再继续和下面的规则匹配。<br>这三个条件缺一不可，尤其是对RD位的检查，这几乎是GFW劫持包最重要的特征。</p>
<hr>
<p>参考：</p>
<ul>
<li><a href="http://www.lifetyper.com/2014/06/anti-dns-poison-without-vpn.html" target="_blank" rel="external">无需VPN的OpenWRT DNS防污染方法</a></li>
<li><a href="https://github.com/clowwindy/ChinaDNS-C/blob/master/iplist.txt" target="_blank" rel="external">clowwindy/ChinaDNS-C/iplist.txt</a></li>
<li><a href="https://github.com/hackgfw/openwrt-gfw" target="_blank" rel="external">hackgfw/openwrt-gfw</a></li>
</ul>
]]></content>
<summary type="html">
<p><strong>GFW的DNS劫持原理</strong>说起来挺简单，GFW对境外DNS的劫持，是在发现你请求敏感域名的DNS记录时，伪装成你请求的DNS返回一个污染的数据包给你的解析器，但并不会丢弃你向境外DNS的请求，也不会丢弃境外DNS返回的正确解析结果，他只是让错误
</summary>
<category term="Network" scheme="http://zin.so/categories/Network/"/>
<category term="DNS" scheme="http://zin.so/tags/DNS/"/>
<category term="iptables" scheme="http://zin.so/tags/iptables/"/>
</entry>
<entry>
<title>在CentOS 7上安装OpenVPN Server</title>
<link href="http://zin.so/2014/08/21/how-to-install-openvpn-server-on-centos-7/"/>
<id>http://zin.so/2014/08/21/how-to-install-openvpn-server-on-centos-7/</id>
<published>2014-08-21T09:34:35.000Z</published>
<updated>2016-08-29T05:38:34.000Z</updated>
<content type="html"><![CDATA[<h2 id="安装openvpn"><a href="#安装openvpn" class="headerlink" title="安装openvpn"></a>安装openvpn</h2><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div></pre></td><td class="code"><pre><div class="line">yum install -y openssl openssl-devel lzo lzo-devel pam pam-devel</div><div class="line">yum install openvpn -y</div></pre></td></tr></table></figure>
<p>＊注：yum安装的方式需要有epel源。</p>
<h2 id="安装easy-rsa"><a href="#安装easy-rsa" class="headerlink" title="安装easy-rsa"></a>安装easy-rsa</h2><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div></pre></td><td class="code"><pre><div class="line">cd /etc/openvpn</div><div class="line">wget -c https://github.com/OpenVPN/easy-rsa/archive/master.zip</div><div class="line">unzip master.zip</div><div class="line">mv easy-rsa-master easy-rsa</div><div class="line">rm -f master.zip</div></pre></td></tr></table></figure>
<h2 id="初始化pki"><a href="#初始化pki" class="headerlink" title="初始化pki"></a>初始化pki</h2><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div></pre></td><td class="code"><pre><div class="line">cd /etc/openvpn/easy-rsa/easyrsa3</div><div class="line">./easyrsa init-pki</div><div class="line">./easyrsa build-ca nopass</div><div class="line">./easyrsa gen-req <EntityName> nopass</div><div class="line">./easyrsa sign-req client <EntityName></div><div class="line">./easyrsa gen-dh</div><div class="line">ln -s easy-rsa/easyrsa3/pki /etc/openvpn/pki</div><div class="line">openvpn --genkey --secret /etc/openvpn/pki/ta.key</div></pre></td></tr></table></figure>
<p>＊注：easyrsa3的使用方法可以参考<a href="https://github.com/OpenVPN/easy-rsa/blob/master/README.quickstart.md" target="_blank" rel="external">这一篇easyrsa3官方文档</a></p>
<h2 id="配置server-conf"><a href="#配置server-conf" class="headerlink" title="配置server.conf"></a>配置server.conf</h2><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div></pre></td><td class="code"><pre><div class="line">cd /etc/openvpn</div><div class="line">cp /usr/share/doc/openvpn-2.3.2/sample/sample-config-files/server.conf .</div><div class="line">vim server.conf</div><div class="line">### 修改下列几项</div><div class="line">ca pki/ca.crt</div><div class="line">cert pki/issued/server.crt</div><div class="line">key pki/private/server.key</div><div class="line">dh pki/dh.pem</div><div class="line">tls-auth pki/ta.key 0</div><div class="line">user nobody</div><div class="line">group nobody</div><div class="line">status /var/log/openvpn/openvpn-status.log</div><div class="line">log /var/log/openvpn/openvpn.log</div><div class="line">log-append /var/log/openvpn/openvpn.log</div><div class="line">### 修改完成</div><div class="line">mkdir /var/log/openvpn</div></pre></td></tr></table></figure>
<h2 id="配置openvpn-service"><a href="#配置openvpn-service" class="headerlink" title="配置openvpn.service"></a>配置openvpn.service</h2><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div></pre></td><td class="code"><pre><div class="line">cd /usr/lib/systemd/system/</div><div class="line">mv openvpn@.service openvpn.service</div><div class="line">vim openvpn.service ### 修改pid和conf文件名称</div><div class="line">systemctl enable openvpn.service</div><div class="line">systemctl start openvpn</div></pre></td></tr></table></figure>
<h2 id="配置NAT转发"><a href="#配置NAT转发" class="headerlink" title="配置NAT转发"></a>配置NAT转发</h2><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div></pre></td><td class="code"><pre><div class="line">echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf</div><div class="line">sysctl -p</div><div class="line">iptables -A INPUT -p UDP --dport 1194 -j ACCEPT</div><div class="line">iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j MASQUERADE</div><div class="line">iptables-save > /etc/sysconfig/iptables</div></pre></td></tr></table></figure>
<h2 id="打包客户端配置文件"><a href="#打包客户端配置文件" class="headerlink" title="打包客户端配置文件"></a>打包客户端配置文件</h2><p>简单写了个打包脚本：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div></pre></td><td class="code"><pre><div class="line">#!/bin/bash</div><div class="line">if [ $# != 1 ];then</div><div class="line"> echo "Usage: $0 comName"</div><div class="line"> exit 1</div><div class="line">fi</div><div class="line">comName=$1</div><div class="line">pkiDir=/etc/openvpn/easy-rsa/easyrsa3/pki</div><div class="line">ca_crtFile=$pkiDir/ca.crt</div><div class="line">crtFile=$pkiDir/issued/$comName.crt</div><div class="line">keyFile=$pkiDir/private/$comName.key</div><div class="line">ta_keyFile=$pkiDir/ta.key</div><div class="line">mkdir ~/$comName\_vpn</div><div class="line">cp $ca_crtFile $crtFile $keyFile $ta_keyFile ~/$comName\_vpn</div><div class="line">cat > ~/$comName\_vpn/$comName.ovpn <<EOF</div><div class="line">client</div><div class="line">remote your.vpn.server</div><div class="line">proto udp</div><div class="line">dev tun</div><div class="line">ca ca.crt</div><div class="line">cert $comName.crt</div><div class="line">key $comName.key</div><div class="line">tls-auth ta.key 1</div><div class="line">comp-lzo</div><div class="line">nobind</div><div class="line">EOF</div><div class="line">cd</div><div class="line">tar czvf $comName\_vpn.tgz $comName\_vpn</div></pre></td></tr></table></figure></p>
<h2 id="连接测试"><a href="#连接测试" class="headerlink" title="连接测试"></a>连接测试</h2><p>客户端连接测试 & trouble shooting</p>
]]></content>
<summary type="html">
<h2 id="安装openvpn"><a href="#安装openvpn" class="headerlink" title="安装openvpn"></a>安装openvpn</h2><figure class="highlight plain"><table><tr><t
</summary>
<category term="Tools" scheme="http://zin.so/categories/Tools/"/>
<category term="VPN" scheme="http://zin.so/tags/VPN/"/>
<category term="NAT" scheme="http://zin.so/tags/NAT/"/>
<category term="OpenVPN" scheme="http://zin.so/tags/OpenVPN/"/>
<category term="CentOS 7" scheme="http://zin.so/tags/CentOS-7/"/>
</entry>
<entry>
<title>在Mac OSX上通过dd命令制作系统启动盘</title>
<link href="http://zin.so/2014/08/18/dd-an-os-startup-disk-on-mac-osx/"/>
<id>http://zin.so/2014/08/18/dd-an-os-startup-disk-on-mac-osx/</id>
<published>2014-08-18T09:21:42.000Z</published>
<updated>2016-08-29T05:38:34.000Z</updated>
<content type="html"><![CDATA[<h2 id="将iso转换成img文件"><a href="#将iso转换成img文件" class="headerlink" title="将iso转换成img文件"></a>将iso转换成img文件</h2><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">$ hdiutil convert -format UDRW -o <outfile> <path_to_your_iso_file></div></pre></td></tr></table></figure>
<p>＊注：该命令会将iso文件转换成dmg文件，而且Mac OSX会默认在“outfile”后面追加一个“.dmg”。</p>
<h2 id="查看U盘的盘符"><a href="#查看U盘的盘符" class="headerlink" title="查看U盘的盘符"></a>查看U盘的盘符</h2><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div></pre></td><td class="code"><pre><div class="line">$ diskutil list</div><div class="line">/dev/disk0</div><div class="line"> #: TYPE NAME SIZE IDENTIFIER</div><div class="line"> 0: GUID_partition_scheme *251.0 GB disk0</div><div class="line"> 1: EFI EFI 209.7 MB disk0s1</div><div class="line"> 2: Apple_CoreStorage 250.1 GB disk0s2</div><div class="line"> 3: Apple_Boot Recovery HD 650.0 MB disk0s3</div><div class="line">/dev/disk1</div><div class="line"> #: TYPE NAME SIZE IDENTIFIER</div><div class="line"> 0: Apple_HFS MHD *248.4 GB disk1</div><div class="line"> Logical Volume on disk0s2</div><div class="line"> 04D26A4D-9A6E-448A-9017-8DA1804D4E93</div><div class="line"> Unencrypted</div><div class="line">/dev/disk2</div><div class="line"> #: TYPE NAME SIZE IDENTIFIER</div><div class="line"> 0: GUID_partition_scheme *7.9 GB disk2</div><div class="line"> 1: EFI EFI 209.7 MB disk2s1</div><div class="line"> 2: Apple_HFS Yosemite 7.6 GB disk2s2</div></pre></td></tr></table></figure>
<p>＊注：该命令是查看当前系统上挂载的磁盘，其中/dev/disk2是我的U盘。不同的系统disk后面的数字可能不一样，但一般都是diskN的形式。</p>
<h2 id="卸载U盘"><a href="#卸载U盘" class="headerlink" title="卸载U盘"></a>卸载U盘</h2><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div></pre></td><td class="code"><pre><div class="line">$ diskutil unmountDisk /dev/disk2</div><div class="line">Unmount of all volumes on disk2 was successful</div></pre></td></tr></table></figure>
<p>＊注：该命令是卸载U盘挂载的卷，使U盘处于空闲状态。</p>
<h2 id="将dmg镜像写入U盘"><a href="#将dmg镜像写入U盘" class="headerlink" title="将dmg镜像写入U盘"></a>将dmg镜像写入U盘</h2><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">$ sudo dd if=<outfile.dmg> of=/dev/rdisk2 bs=1m</div></pre></td></tr></table></figure>
<p>＊注1：该命令将第一步生成的dmg文件写入到U盘/dev/rdisk2（注意不是/dev/disk2）;<br>＊注2：该命令需要sudo权限；<br>＊注3：关于bs大小单位，BSD的dd要用小写“m、g”等，GNU的dd要用大写“M、G”等。</p>
<h2 id="弹出U盘"><a href="#弹出U盘" class="headerlink" title="弹出U盘"></a>弹出U盘</h2><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div></pre></td><td class="code"><pre><div class="line">$ diskutil eject /dev/disk2</div><div class="line">Disk /dev/disk2 ejected</div></pre></td></tr></table></figure>
]]></content>
<summary type="html">
<h2 id="将iso转换成img文件"><a href="#将iso转换成img文件" class="headerlink" title="将iso转换成img文件"></a>将iso转换成img文件</h2><figure class="highlight plain"><
</summary>
<category term="Shell" scheme="http://zin.so/categories/Shell/"/>
<category term="dd" scheme="http://zin.so/tags/dd/"/>
<category term="Mac OSX" scheme="http://zin.so/tags/Mac-OSX/"/>
</entry>
<entry>
<title>取模运算和求余运算的区别</title>
<link href="http://zin.so/2014/04/16/diff-mod-rem/"/>
<id>http://zin.so/2014/04/16/diff-mod-rem/</id>
<published>2014-04-16T04:46:59.000Z</published>
<updated>2016-08-29T05:38:34.000Z</updated>
<content type="html"><![CDATA[<p>通常情况下取模运算(mod)和求余(rem)运算被混为一谈，因为在大多数的编程语言里，都用’%’符号表示取模或者求余运算。在这里要提醒大家要十分注意当前环境下’%’运算符的具体意义，因为在有负数存在的情况下，两者的结果是不一样的。</p>
<p>对于整型数a，b来说，取模运算或者求余运算的方法都是：</p>
<p><span style="color: #0000ff;"><strong>1、求 整数商：c = a/b</strong></span></p>
<p><span style="color: #0000ff;"><strong>2、计算模或者余数：r = a - c*b</strong></span></p>
<p>求模运算和求余运算在第一步不同: <strong><span style="color: #ff0000;">求余运算在取c的值时，向0方向舍入（fix()函数）</span></strong>；</p>
<p>而<strong><span style="color: #ff0000;">取模运算在计算c的值时，向无穷小方向舍入（floor()函数）</span></strong>。</p>
<p>因此，当a和b符号一致时，求模运算和求余运算所得的c的值一致，因此结果一致。但是当符号不一致的时候，结果不一样。</p>
<p>具体来说，求模运算结果的符号和b一致，求余运算结果的符号和a一致。</p>
<p>在C语言中，%符号表示的是求余运算，在python脚本中，%表示的是取模。（通常取模运算中b不允许是负数，但是在python里面可以在%后面跟负数，因为python语言中除法的结果是向无穷小方向舍入，因此计算结果是取模！）</p>
<p>下面表格是一些典型的取模或者求余的值。</p>
<table>
<thead>
<tr>
<th style="text-align:center">a</th>
<th style="text-align:center">b</th>
<th style="text-align:center">C语言：a%b（求余）</th>
<th style="text-align:center">Python Shell：a%b（取模）</th>
</tr>
</thead>
<tbody>
<tr>
<td style="text-align:center">-3</td>
<td style="text-align:center">-5</td>
<td style="text-align:center">-3</td>
<td style="text-align:center">-3</td>
</tr>
<tr>
<td style="text-align:center">-3</td>
<td style="text-align:center">4</td>
<td style="text-align:center">-3 = -3 – (0) * 4</td>
<td style="text-align:center">1 = -3 – (-1) * 4</td>
</tr>
<tr>
<td style="text-align:center">-3</td>
<td style="text-align:center">2</td>
<td style="text-align:center">-1 = -3 – (-1) * 2</td>
<td style="text-align:center">1 = -3 – (-2) * 2</td>
</tr>
<tr>
<td style="text-align:center">-1</td>
<td style="text-align:center">6</td>
<td style="text-align:center">-1 = -1 – (0) * 6</td>
<td style="text-align:center">5 = -1 – (-1) * 6</td>
</tr>
<tr>
<td style="text-align:center">-4</td>
<td style="text-align:center">-3</td>
<td style="text-align:center">-1</td>
<td style="text-align:center">-1</td>
</tr>
<tr>
<td style="text-align:center">2</td>
<td style="text-align:center">4</td>
<td style="text-align:center">2</td>
<td style="text-align:center">2</td>
</tr>
<tr>
<td style="text-align:center">5</td>
<td style="text-align:center">3</td>
<td style="text-align:center">2</td>
<td style="text-align:center">2</td>
</tr>
<tr>
<td style="text-align:center">4</td>
<td style="text-align:center">-7</td>
<td style="text-align:center">4 = 4 – (0) * (-7)</td>
<td style="text-align:center">-3 = 4 – (-1) * (-7)</td>
</tr>
<tr>
<td style="text-align:center">4</td>
<td style="text-align:center">-3</td>
<td style="text-align:center">1 = 4 – (-1) * (-3)</td>
<td style="text-align:center">-2 = 4 – (-2) * (-3)</td>
</tr>
<tr>
<td style="text-align:center">-6</td>
<td style="text-align:center">-5</td>
<td style="text-align:center">-1</td>
<td style="text-align:center">-1</td>
</tr>
</tbody>
</table>
]]></content>
<summary type="html">
<p>通常情况下取模运算(mod)和求余(rem)运算被混为一谈，因为在大多数的编程语言里，都用’%’符号表示取模或者求余运算。在这里要提醒大家要十分注意当前环境下’%’运算符的具体意义，因为在有负数存在的情况下，两者的结果是不一样的。</p>
<p>对于整型数a，b来说，取模运
</summary>
<category term="Code" scheme="http://zin.so/categories/Code/"/>
<category term="c" scheme="http://zin.so/tags/c/"/>
<category term="Python" scheme="http://zin.so/tags/Python/"/>
<category term="运算" scheme="http://zin.so/tags/%E8%BF%90%E7%AE%97/"/>
</entry>
<entry>
<title>WordPress通过unix socket连接MySQL</title>
<link href="http://zin.so/2014/04/09/using-mysql-socket-in-wordpress/"/>
<id>http://zin.so/2014/04/09/using-mysql-socket-in-wordpress/</id>
<published>2014-04-09T11:14:30.000Z</published>
<updated>2016-08-29T05:38:34.000Z</updated>
<content type="html"><![CDATA[<p>今天在自己server上（/tmp目录下）测试一些东西，测完以后，ls了一下，发现好多临时文件，然后强迫症犯了，手一抖给rm -rf ./* 掉了。删掉以后本blog就报连不上数据库的错了，发现是把 /tmp/mysql.sock 给干掉了。但是在/tmp下面放这么孤零零的一个文件难受呀（强迫症，伤不起），怎么办呢？</p>
<p>后面就去改my.cnf（mysql的配置文件）里面socket的路径，改完重启MySQL以后，发现WordPress还是连不上MySQL，但是socket文件确实已经在磁盘上换地方了。</p>
<p>开WordPress的debug模式（测试完成后记得关闭掉），<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">define('WP_DEBUG', true);</div></pre></td></tr></table></figure></p>
<p>发现WordPress还是去连原来的/tmp/mysql.sock，当然找不到文件了。</p>
<p>Google了下，发现可以直接在wp-config.php里面指定mysql-socket地址。<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">define('DB_HOST', ':/var/run/mysqld/mysqld.sock');</div></pre></td></tr></table></figure></p>
<p>直接指定了socket地址，刷新了下就恢复了。</p>
<hr>
<p>下面总结下WordPress通过unix socket连接MySQL的方法：</p>
<p>1、在my.cnf里面设置socket地址；<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">socket = /var/run/mysqld/mysqld.sock</div></pre></td></tr></table></figure></p>
<p>通过执行下面的SQL查询，你也可以看到当前MySQL的socket位置路径：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line">SHOW VARIABLES LIKE 'socket';</div></pre></td></tr></table></figure></p>
<p>2、在wp-config.php里面设置’DB_HOST’到’:/path/to/mysql.sock’（具体的socket文件路径），下面这几种写法都可以（注意’:’冒号就行）；<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div></pre></td><td class="code"><pre><div class="line">define('DB_HOST', ':/var/run/mysqld/mysqld.sock');</div><div class="line">define('DB_HOST', 'localhost:/var/run/mysqld/mysqld.sock');</div><div class="line">define('DB_HOST', '127.0.0.1:/var/run/mysqld/mysqld.sock');</div></pre></td></tr></table></figure></p>
<p>3、如果其他地方也不需要使用到3306端口，为了安全起见，可以直接在my.cnf里面禁用掉；<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div></pre></td><td class="code"><pre><div class="line">[mysqld]</div><div class="line">skip-networking</div></pre></td></tr></table></figure></p>
<p>保存，重启下MySQL，netstat -tlnp查看下端口，就会发现3306消失掉了。</p>
]]></content>
<summary type="html">
<p>今天在自己server上（/tmp目录下）测试一些东西，测完以后，ls了一下，发现好多临时文件，然后强迫症犯了，手一抖给rm -rf ./* 掉了。删掉以后本blog就报连不上数据库的错了，发现是把 /tmp/mysql.sock 给干掉了。但是在/tmp下面放这么孤零零的
</summary>
<category term="LNMP Stack" scheme="http://zin.so/categories/LNMP-Stack/"/>
<category term="MySQL" scheme="http://zin.so/tags/MySQL/"/>
</entry>
<entry>
<title>在CentOS6.5上安装HHVM3.0(解决依赖问题)</title>
<link href="http://zin.so/2014/03/25/install-hhvm/"/>
<id>http://zin.so/2014/03/25/install-hhvm/</id>
<published>2014-03-25T15:20:30.000Z</published>
<updated>2016-08-29T05:38:34.000Z</updated>
<content type="html"><![CDATA[<p>前几天（03月21日），Facebook 正式发布专门用于 HHVM 的编程语言 Hack，然后就突然想装个HHVM来跑我的blog玩一下，后面也确实开始折腾了。</p>
<p>03月22日晚上就试水了下，按GitHub上或者是HHVM官网上的教程来的，提示依赖的几个编译环境的版本太低了。然后就去折腾找更新的rpm啊（各种第三方repo，各种Google），发现了一个悲剧的现状：目前CentOS6下还木有现成的高版本的编译环境的rpm，然后那天晚上时间也不早了就放弃了。</p>
<p>03月25日晚上，就又突然想起这个事，然后就又搞起来了。</p>
<p>办法嘛只有1个：那就是用老的（低版本的）编译环境去编译一个新的（高版本的）编译环境。好像有点绕，就拿gcc举个例子，目前是用gcc 4.4.7编译了个gcc 4.8.2，这就是悲催的现实。</p>
<p>低版本的环境：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div></pre></td><td class="code"><pre><div class="line">[root@ ~]# type gcc</div><div class="line">gcc is /usr/bin/gcc</div><div class="line">[root@ ~]# gcc -v</div><div class="line">使用内建 specs。</div><div class="line">目标：x86_64-redhat-linux</div><div class="line">配置为：../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux</div><div class="line">线程模型：posix</div><div class="line">gcc 版本 4.4.7 20120313 (Red Hat 4.4.7-4) (GCC) </div><div class="line">[root@ ~]#</div></pre></td></tr></table></figure></p>
<p>编译完的高版本：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div></pre></td><td class="code"><pre><div class="line">[root@ ~]# gcc -v</div><div class="line">使用内建 specs。</div><div class="line">COLLECT_GCC=gcc</div><div class="line">COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-unknown-linux-gnu/4.8.2/lto-wrapper</div><div class="line">目标：x86_64-unknown-linux-gnu</div><div class="line">配置为：./configure --enable-checking=release --enable-languages=c,c++ --disable-multilib</div><div class="line">线程模型：posix</div><div class="line">gcc 版本 4.8.2 (GCC) </div><div class="line">[root@ ~]#</div></pre></td></tr></table></figure></p>
<p>上面只是把GCC 4.8.2编译安装了，后面还要替换下系统的链接库：/usr/lib64/libstdc++.so.6</p>
<p>旧版和新版GLIBC支持的对比：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div><div class="line">46</div><div class="line">47</div><div class="line">48</div></pre></td><td class="code"><pre><div class="line">[root@ ~]# strings /usr/lib64/libstdc++.so.6.bak |grep GLIBC</div><div class="line">GLIBCXX_3.4</div><div class="line">GLIBCXX_3.4.1</div><div class="line">GLIBCXX_3.4.2</div><div class="line">GLIBCXX_3.4.3</div><div class="line">GLIBCXX_3.4.4</div><div class="line">GLIBCXX_3.4.5</div><div class="line">GLIBCXX_3.4.6</div><div class="line">GLIBCXX_3.4.7</div><div class="line">GLIBCXX_3.4.8</div><div class="line">GLIBCXX_3.4.9</div><div class="line">GLIBCXX_3.4.10</div><div class="line">GLIBCXX_3.4.11</div><div class="line">GLIBCXX_3.4.12</div><div class="line">GLIBCXX_3.4.13</div><div class="line">GLIBC_2.2.5</div><div class="line">GLIBC_2.3</div><div class="line">GLIBC_2.4</div><div class="line">GLIBC_2.3.2</div><div class="line">GLIBCXX_FORCE_NEW</div><div class="line">GLIBCXX_DEBUG_MESSAGE_LENGTH</div><div class="line">[root@ ~]# strings /usr/lib64/libstdc++.so.6 |grep GLIBC</div><div class="line">GLIBCXX_3.4</div><div class="line">GLIBCXX_3.4.1</div><div class="line">GLIBCXX_3.4.2</div><div class="line">GLIBCXX_3.4.3</div><div class="line">GLIBCXX_3.4.4</div><div class="line">GLIBCXX_3.4.5</div><div class="line">GLIBCXX_3.4.6</div><div class="line">GLIBCXX_3.4.7</div><div class="line">GLIBCXX_3.4.8</div><div class="line">GLIBCXX_3.4.9</div><div class="line">GLIBCXX_3.4.10</div><div class="line">GLIBCXX_3.4.11</div><div class="line">GLIBCXX_3.4.12</div><div class="line">GLIBCXX_3.4.13</div><div class="line">GLIBCXX_3.4.14</div><div class="line">GLIBCXX_3.4.15</div><div class="line">GLIBCXX_3.4.16</div><div class="line">GLIBCXX_3.4.17</div><div class="line">GLIBCXX_3.4.18</div><div class="line">GLIBCXX_3.4.19</div><div class="line">GLIBC_2.3</div><div class="line">GLIBC_2.2.5</div><div class="line">GLIBC_2.3.2</div><div class="line">GLIBCXX_FORCE_NEW</div><div class="line">GLIBCXX_DEBUG_MESSAGE_LENGTH</div><div class="line">[root@ ~]#</div></pre></td></tr></table></figure></p>
<p>03月26日，下面类似编译cmake等依赖环境。<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div></pre></td><td class="code"><pre><div class="line">[root@ ~]# cmake --version</div><div class="line">cmake version 2.6-patch 4</div><div class="line">[root@ ~]# </div><div class="line">==></div><div class="line">[root@ ~]# cmake --version</div><div class="line">cmake version 2.8.12.2</div><div class="line">[root@ ~]#</div></pre></td></tr></table></figure></p>
<p>截止到03月26日21:44，终于把依赖的环境全编译好了。<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div 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CMAKE_PREFIX_PATH was missing, proceeding anyway</div><div class="line">-- Boost version: 1.55.0</div><div class="line">-- Found the following Boost libraries:</div><div class="line">-- system</div><div class="line">-- program_options</div><div class="line">-- filesystem</div><div class="line">-- regex</div><div class="line">-- Found LibMagicWand: /usr/lib64/libMagickWand.so </div><div class="line">-- MySQL Include dir: /usr/include/mysql library dir: /usr/lib64/mysql</div><div class="line">-- MySQL client libraries: mysqlclient_r</div><div class="line">-- Found PCRE: /usr/lib64/libpcre.so </div><div class="line">-- Found libevent: /usr/lib64/libevent.so</div><div class="line">-- Looking for evhttp_bind_socket_with_fd</div><div class="line">-- Looking for evhttp_bind_socket_with_fd - not found</div><div class="line">-- Could NOT find LibUODBC (missing: LIBODBC_LIBRARIES LIBODBC_INCLUDE_DIRS) </div><div class="line">-- Found LibJpeg: /usr/lib64/libjpeg.so </div><div class="line">-- Found LibPng: /usr/lib64/libpng.so </div><div class="line">-- Found PkgConfig: /usr/bin/pkg-config (found version "0.23") </div><div class="line">-- Found Freetype: /usr/lib64/libfreetype.so </div><div class="line">-- Found CURL: /usr/lib64/libcurl.so (found version "7.37.0-DEV") </div><div class="line">-- Looking for curl_multi_select</div><div class="line">-- Looking for curl_multi_select - not found</div><div class="line">-- Looking for curl_multi_wait</div><div class="line">-- Looking for curl_multi_wait - not found</div><div class="line">-- Found LibXml2: /usr/lib64/libxml2.so (found version "2.7.6") </div><div class="line">-- Found LibXslt: /usr/lib64/libxslt.so (found version "1.1.26") </div><div class="line">-- Found EXPAT: /usr/lib64/libexpat.so (found version "2.0.1") </div><div class="line">-- Found ICU header files in /usr/include</div><div class="line">-- Found ICU libraries: /usr/lib64/libicuuc.so</div><div class="line">-- Performing Test JEMALLOC_VERSION_3</div><div class="line">-- Performing Test JEMALLOC_VERSION_3 - Success</div><div class="line">-- Found jemalloc: /usr/lib64/libjemalloc.so</div><div class="line">-- Found Intel TBB</div><div class="line">-- Found mcrypt: /usr/lib64/libmcrypt.so</div><div class="line">-- Found OpenSSL: /usr/lib64/libssl.so;/usr/lib64/libcrypto.so (found version "1.0.1e") </div><div class="line">-- Found ZLIB: /usr/lib64/libz.so (found version "1.2.3") </div><div class="line">-- Found BZip2: /usr/lib64/libbz2.so (found version "1.0.5") </div><div class="line">-- Looking for BZ2_bzCompressInit in /usr/lib64/libbz2.so</div><div class="line">-- Looking for BZ2_bzCompressInit in /usr/lib64/libbz2.so - found</div><div class="line">-- Found ONIGURUMA: /usr/lib64/libonig.so </div><div class="line">-- Found ldap: /usr/lib64/libldap.so;/usr/lib64/liblber.so</div><div class="line">-- Found LIBPTHREAD: /usr/lib64/libpthread.so </div><div class="line">-- Found Readline: /usr/include </div><div class="line">-- Could NOT find Editline (missing: EDITLINE_LIBRARIES EDITLINE_INCLUDE_DIRS) </div><div class="line">-- Found LibElf: /usr/lib64/libelf.so </div><div class="line">-- Performing Test ELF_GETSHDRSTRNDX</div><div class="line">-- Performing Test ELF_GETSHDRSTRNDX - Success</div><div class="line">-- Found LibDwarf: /usr/lib64/libdwarf.so </div><div class="line">-- Looking for dwarf_encode_leb128</div><div class="line">-- Looking for dwarf_encode_leb128 - found</div><div class="line">Generating Release build</div><div class="line">-- Performing Test FOLLY_IFUNC</div><div class="line">-- Performing Test FOLLY_IFUNC - Failed</div><div class="line">-- Looking for clock_gettime</div><div class="line">-- Looking for clock_gettime - found</div><div class="line">-- Looking for arpa/inet.h</div><div class="line">-- Looking for arpa/inet.h - found</div><div class="line">-- Looking for netinet/in.h</div><div class="line">-- Looking for netinet/in.h - found</div><div class="line">-- Looking for stddef.h</div><div class="line">-- Looking for stddef.h - found</div><div class="line">-- Looking for stdint.h</div><div class="line">-- Looking for stdint.h - found</div><div class="line">-- Looking for string.h</div><div class="line">-- Looking for string.h - found</div><div class="line">-- Looking for sys/socket.h</div><div class="line">-- Looking for sys/socket.h - found</div><div class="line">-- Looking for sys/time.h</div><div class="line">-- Looking for sys/time.h - found</div><div class="line">-- Looking for unistd.h</div><div class="line">-- Looking for unistd.h - found</div><div class="line">-- Looking for sys/types.h</div><div class="line">-- Looking for sys/types.h - found</div><div class="line">-- Looking for stdint.h</div><div class="line">-- Looking for stdint.h - found</div><div class="line">-- Looking for stddef.h</div><div class="line">-- Looking for stddef.h - found</div><div class="line">-- Check size of size_t</div><div class="line">-- Check size of size_t - done</div><div class="line">-- Check size of ssize_t</div><div class="line">-- Check size of ssize_t - done</div><div class="line">-- Check size of uint32_t</div><div class="line">-- Check size of uint32_t - done</div><div class="line">-- Check size of uint8_t</div><div class="line">-- Check size of uint8_t - done</div><div class="line">-- Looking for AF_LOCAL</div><div class="line">-- Looking for AF_LOCAL - found</div><div class="line">-- Looking for PF_LOCAL</div><div class="line">-- Looking for PF_LOCAL - found</div><div class="line">-- Looking for memset</div><div class="line">-- Looking for memset - found</div><div class="line">-- Looking for socket</div><div class="line">-- Looking for socket - found</div><div class="line">-- Looking for strerror</div><div class="line">-- Looking for strerror - found</div><div class="line">-- Found libevent: /usr/lib64/libevent.so</div><div class="line">-- Looking for event_get_version_number</div><div class="line">-- Looking for event_get_version_number - not found</div><div class="line">-- Performing Test HAVE_LIBEVENT_145</div><div class="line">-- Performing Test HAVE_LIBEVENT_145 - Success</div><div class="line">-- Found libevent 1.4.5+</div><div class="line">-- Looking for include file stdlib.h</div><div class="line">-- Looking for include file stdlib.h - found</div><div class="line">-- Looking for include file assert.h</div><div class="line">-- Looking for include file assert.h - found</div><div class="line">-- Looking for strcasecmp</div><div class="line">-- Looking for strcasecmp - found</div><div class="line">-- Looking for strchr</div><div class="line">-- Looking for strchr - found</div><div class="line">-- Looking for include file sys/stat.h</div><div class="line">-- Looking for include file sys/stat.h - found</div><div class="line">-- Looking for include file stdlib.h</div><div class="line">-- Looking for include file stdlib.h - found</div><div class="line">-- Looking for include file string.h</div><div class="line">-- Looking for include file string.h - found</div><div class="line">-- Looking for include file memory.h</div><div class="line">-- Looking for include file memory.h - found</div><div class="line">-- Looking for include file strings.h</div><div class="line">-- Looking for include file strings.h - found</div><div class="line">-- Looking for include file inttypes.h</div><div class="line">-- Looking for include file inttypes.h - found</div><div class="line">-- Looking for include file unistd.h</div><div class="line">-- Looking for include file unistd.h - found</div><div class="line">-- Looking for include file dlfcn.h</div><div class="line">-- Looking for include file dlfcn.h - found</div><div class="line">-- Looking for fdatasync</div><div class="line">-- Looking for fdatasync - found</div><div class="line">-- Looking for usleep</div><div class="line">-- Looking for usleep - found</div><div class="line">-- Looking for fullfsync</div><div class="line">-- Looking for fullfsync - not found</div><div class="line">-- Looking for localtime_r</div><div class="line">-- Looking for localtime_r - found</div><div class="line">-- Looking for gmtime_r</div><div class="line">-- Looking for gmtime_r - found</div><div class="line">-- Looking for pthread_create in pthread</div><div class="line">-- Looking for pthread_create in pthread - found</div><div class="line">-- Check if the system is big endian</div><div class="line">-- Searching 16 bit integer</div><div class="line">-- Check size of unsigned short</div><div class="line">-- Check size of unsigned short - done</div><div class="line">-- Using unsigned short</div><div class="line">-- Check if the system is big endian - little endian</div><div class="line">-- Looking for include file locale.h</div><div class="line">-- Looking for include file locale.h - found</div><div class="line">-- Looking for include file limits.h</div><div class="line">-- Looking for include file limits.h - found</div><div class="line">-- Check size of int32_t</div><div class="line">-- Check size of int32_t - done</div><div class="line">-- Looking for strtoll</div><div class="line">-- Looking for strtoll - found</div><div class="line">-- Looking for atoll</div><div class="line">-- Looking for atoll - found</div><div class="line">-- Looking for strftime</div><div class="line">-- Looking for strftime - found</div><div class="line">-- Looking for setlocale</div><div class="line">-- Looking for setlocale - found</div><div class="line">-- Boost version: 1.55.0</div><div class="line">-- Found the following Boost libraries:</div><div class="line">-- system</div><div class="line">-- program_options</div><div class="line">-- filesystem</div><div class="line">-- regex</div><div class="line">-- Looking for _close</div><div class="line">-- Looking for _close - not found</div><div class="line">-- Looking for _dup</div><div class="line">-- Looking for _dup - not found</div><div class="line">-- Looking for _fdopen</div><div class="line">-- Looking for _fdopen - not found</div><div class="line">-- Looking for _fileno</div><div class="line">-- Looking for _fileno - not found</div><div class="line">-- Looking for _open</div><div class="line">-- Looking for _open - not found</div><div class="line">-- Looking for _snprintf</div><div class="line">-- Looking for _snprintf - not found</div><div class="line">-- Looking for _strdup</div><div class="line">-- Looking for _strdup - not found</div><div class="line">-- Looking for _stricmp</div><div class="line">-- Looking for _stricmp - not found</div><div class="line">-- Looking for fseeko</div><div class="line">-- Looking for fseeko - found</div><div class="line">-- Looking for ftello</div><div class="line">-- Looking for ftello - found</div><div class="line">-- Looking for open</div><div class="line">-- Looking for open - found</div><div class="line">-- Looking for mkstemp</div><div class="line">-- Looking for mkstemp - found</div><div class="line">-- Looking for snprintf</div><div class="line">-- Looking for snprintf - found</div><div class="line">-- Looking for strdup</div><div class="line">-- Looking for strdup - found</div><div class="line">-- Looking for MoveFileExA</div><div class="line">-- Looking for MoveFileExA - not found</div><div class="line">-- Looking for include file sys/types.h</div><div class="line">-- Looking for include file sys/types.h - found</div><div class="line">-- Looking for include file inttypes.h</div><div class="line">-- Looking for include file inttypes.h - found</div><div class="line">-- Looking for include file stdint.h</div><div class="line">-- Looking for include file stdint.h - found</div><div class="line">-- Check size of __int8</div><div class="line">-- Check size of __int8 - failed</div><div class="line">-- Check size of int8_t</div><div class="line">-- Check size of int8_t - done</div><div class="line">-- Check size of uint8_t</div><div class="line">-- Check size of uint8_t - done</div><div class="line">-- Check size of __int16</div><div class="line">-- Check size of __int16 - failed</div><div class="line">-- Check size of int16_t</div><div class="line">-- Check size of int16_t - done</div><div class="line">-- Check size of uint16_t</div><div class="line">-- Check size of uint16_t - done</div><div class="line">-- Check size of __int32</div><div class="line">-- Check size of __int32 - failed</div><div class="line">-- Check size of int32_t</div><div class="line">-- Check size of int32_t - done</div><div class="line">-- Check size of uint32_t</div><div class="line">-- Check size of uint32_t - done</div><div class="line">-- Check size of __int64</div><div class="line">-- Check size of __int64 - failed</div><div class="line">-- Check size of int64_t</div><div class="line">-- Check size of int64_t - done</div><div class="line">-- Check size of uint64_t</div><div class="line">-- Check size of uint64_t - done</div><div class="line">-- Check size of short</div><div class="line">-- Check size of short - done</div><div class="line">-- Check size of int</div><div class="line">-- Check size of int - done</div><div class="line">-- Check size of long</div><div class="line">-- Check size of long - done</div><div class="line">-- Check size of long long</div><div class="line">-- Check size of long long - done</div><div class="line">-- Check size of off_t</div><div class="line">-- Check size of off_t - done</div><div class="line">-- Check size of size_t</div><div class="line">-- Check size of size_t - done</div><div class="line">-- Check size of ssize_t</div><div class="line">-- Check size of ssize_t - done</div><div class="line">-- Boost version: 1.55.0</div><div class="line">-- Found the following Boost libraries:</div><div class="line">-- thread</div><div class="line">-- system</div><div class="line">-- Boost version: 1.55.0</div><div class="line">-- Found the following Boost libraries:</div><div class="line">-- thread</div><div class="line">-- system</div><div class="line">-- OCaml not found, will not build Hack typechecker</div><div class="line">-- Configuring done</div><div class="line">-- Generating done</div><div class="line">-- Build files have been written to: /root/hhvm_tmp/hhvm</div><div class="line">[root@ hhvm]#</div></pre></td></tr></table></figure></p>
<p>下一步就是跑HHVM的make。</p>
<p>03月27日21:30</p>
<p>我去，HHVM的编译卡在imagick了：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div><div class="line">46</div><div class="line">47</div><div class="line">48</div><div class="line">49</div><div class="line">50</div><div class="line">51</div><div class="line">52</div><div class="line">53</div><div class="line">54</div><div class="line">55</div><div class="line">56</div><div class="line">57</div><div class="line">58</div><div class="line">59</div><div class="line">60</div><div class="line">61</div><div class="line">62</div><div class="line">63</div><div class="line">64</div></pre></td><td class="code"><pre><div class="line">[ 51%] Building CXX object hphp/runtime/CMakeFiles/hphp_runtime_static.dir/ext/imagick/ext_imagick.cpp.o</div><div class="line">[ 51%] Building CXX object hphp/runtime/CMakeFiles/hphp_runtime_static.dir/ext/imagick/constants.cpp.o</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp: 在函数‘void HPHP::loadImagickConstants()’中:</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:760:52: 错误：‘ModulusAddCompositeOp’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_COMPOSITE_MODULUSADD, ModulusAddCompositeOp);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:762:28: 错误：‘ModulusSubtractCompositeOp’在此作用域中尚未声明</div><div class="line"> ModulusSubtractCompositeOp);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:809:43: 错误：‘JincFilter’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_FILTER_JINC, JincFilter);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:810:47: 错误：‘SincFastFilter’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_FILTER_SINCFAST, SincFastFilter);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:811:47: 错误：‘RobidouxFilter’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_FILTER_ROBIDOUX, RobidouxFilter);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:812:51: 错误：‘LanczosSharpFilter’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_FILTER_LANCZOSSHARP, LanczosSharpFilter);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:813:47: 错误：‘Lanczos2Filter’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_FILTER_LANCZOS2, Lanczos2Filter);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:814:52: 错误：‘Lanczos2SharpFilter’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_FILTER_LANCZOS2SHARP, Lanczos2SharpFilter);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:864:48: 错误：‘ZipSCompression’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_COMPRESSION_ZIPS, ZipSCompression);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:865:47: 错误：‘PizCompression’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_COMPRESSION_PIZ, PizCompression);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:866:49: 错误：‘Pxr24Compression’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_COMPRESSION_PXR24, Pxr24Compression);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:867:47: 错误：‘B44Compression’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_COMPRESSION_B44, B44Compression);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:868:48: 错误：‘B44ACompression’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_COMPRESSION_B44A, B44ACompression);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:869:48: 错误：‘LZMACompression’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_COMPRESSION_LZMA, LZMACompression);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:944:44: 错误：‘SyncChannels’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_CHANNEL_SYNC, SyncChannels);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:1006:45: 错误：‘MeanEvaluateOperator’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_EVALUATE_MEAN, MeanEvaluateOperator);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:1007:44: 错误：‘AbsEvaluateOperator’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_EVALUATE_ABS, AbsEvaluateOperator);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:1009:28: 错误：‘ExponentialEvaluateOperator’在此作用域中尚未声明</div><div class="line"> ExponentialEvaluateOperator);</div><div class="line"> ^</div><div class="line">/root/hhvm/hphp/runtime/ext/imagick/constants.cpp:1010:47: 错误：‘MedianEvaluateOperator’在此作用域中尚未声明</div><div class="line"> registerImagickConstants(s_EVALUATE_MEDIAN, MedianEvaluateOperator);</div><div class="line"> ^</div><div class="line">make[2]: *** [hphp/runtime/CMakeFiles/hphp_runtime_static.dir/ext/imagick/constants.cpp.o] 错误 1</div><div class="line">make[1]: *** [hphp/runtime/CMakeFiles/hphp_runtime_static.dir/all] 错误 2</div><div class="line">make: *** [all] 错误 2</div><div class="line">➜</div></pre></td></tr></table></figure></p>
<p>靠，果然是被yum默认装的ImageMagick-devel给坑了：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div></pre></td><td class="code"><pre><div class="line">IMAGEMAGICK_BINARY_PATH:PATH=/usr/bin</div><div class="line">IMAGEMAGICK_COMPOSITE_EXECUTABLE:FILEPATH=/usr/bin/composite</div><div class="line">IMAGEMAGICK_CONVERT_EXECUTABLE:FILEPATH=/usr/bin/convert</div><div class="line">IMAGEMAGICK_IMPORT_EXECUTABLE:FILEPATH=/usr/bin/import</div><div class="line">IMAGEMAGICK_MOGRIFY_EXECUTABLE:FILEPATH=/usr/bin/mogrify</div><div class="line">IMAGEMAGICK_MONTAGE_EXECUTABLE:FILEPATH=/usr/bin/montage</div><div class="line">ImageMagick_EXECUTABLE_DIR:PATH=/usr/bin</div><div class="line">ImageMagick_MagickCore_INCLUDE_DIR:PATH=/usr/include/ImageMagick</div><div class="line">ImageMagick_MagickCore_LIBRARY:FILEPATH=/usr/lib64/libMagickCore.so</div><div class="line">ImageMagick_MagickWand_INCLUDE_DIR:PATH=/usr/include/ImageMagick</div><div class="line">ImageMagick_MagickWand_LIBRARY:FILEPATH=/usr/lib64/libMagickWand.so</div></pre></td></tr></table></figure></p>
<p>怒删之。</p>
<p>03月29日凌晨01:08</p>
<p>终于在CentOS 6.5上把HHVM3.0编译出来了，来回折腾了小7个晚上。</p>
<p>（各种环境版本问题，还有”/usr/lib64”和”/usr/lib”的问题等等，坑死~）<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div></pre></td><td class="code"><pre><div class="line">[ 93%] Building CXX object hphp/runtime/ext_hhvm/CMakeFiles/ext_hhvm_static.dir/ext_hhvm_infotabs.cpp.o</div><div class="line">Linking CXX static library libext_hhvm.a</div><div class="line">[ 93%] Built target ext_hhvm_static</div><div class="line">[ 97%] Built target hphp_util</div><div class="line">[ 98%] Built target vixl</div><div class="line">[ 98%] Built target hphp_zend</div><div class="line">[ 98%] Generating systemlib.php</div><div class="line">[ 98%] Built target systemlib</div><div class="line">Scanning dependencies of target hhvm</div><div class="line">[ 98%] Building CXX object hphp/hhvm/CMakeFiles/hhvm.dir/main.cpp.o</div><div class="line">[ 99%] Building CXX object hphp/hhvm/CMakeFiles/hhvm.dir/process-init.cpp.o</div><div class="line">[ 99%] Building CXX object hphp/hhvm/CMakeFiles/hhvm.dir/global-variables.cpp.o</div><div class="line">Linking CXX executable hhvm</div><div class="line">Embedding php in hhvm</div><div class="line">[ 99%] Built target hhvm</div><div class="line">Scanning dependencies of target test</div><div class="line">[ 99%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_ext_memcached.cpp.o</div><div class="line">[ 99%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/main.cpp.o</div><div class="line">[ 99%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_util.cpp.o</div><div class="line">[ 99%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_logger.cpp.o</div><div class="line">[ 99%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_base.cpp.o</div><div class="line">[ 99%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_parser.cpp.o</div><div class="line">[ 99%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_server.cpp.o</div><div class="line">[ 99%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_parser_stmt.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_code_error.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_all.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_ext_server.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_cpp_base.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_fastcgi.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_ext_apc.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_parser_expr.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_ext_mysql.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_fastcgi_protocol.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_code_run.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/ext/test_cpp_ext.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/__/hhvm/process-init.cpp.o</div><div class="line">[100%] Building CXX object hphp/test/CMakeFiles/test.dir/__/hhvm/global-variables.cpp.o</div><div class="line">Linking CXX executable test</div><div class="line">Embedding php in test</div><div class="line">[100%] Built target test</div><div class="line">➜ hhvm git:(HHVM-3.0) ✗</div></pre></td></tr></table></figure></p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div></pre></td><td class="code"><pre><div class="line">➜ hhvm git:(HHVM-3.0) ✗ make install</div><div class="line">[ 2%] Built target folly</div><div class="line">[ 2%] Built target double-conversion</div><div class="line">[ 3%] Built target gen-class-map</div><div class="line">[ 3%] Built target gen-ext-hhvm</div><div class="line">[ 3%] Built target gen-infotabs</div><div class="line">[ 3%] Built target afdt</div><div class="line">[ 8%] Built target mbfl</div><div class="line">[ 8%] Built target sqlite3</div><div class="line">[ 9%] Built target timelib</div><div class="line">[ 9%] Built target lz4</div><div class="line">[ 15%] Built target zip_shared</div><div class="line">[ 21%] Built target zip_static</div><div class="line">[ 23%] Built target hphp_thrift</div><div class="line">[ 23%] Built target hphp_proxygen</div><div class="line">[ 23%] Built target hphp_system</div><div class="line">[ 23%] Built target hphp_parser</div><div class="line">[ 30%] Built target hphp_analysis</div><div class="line">[ 32%] Built target hphp_hhbbc</div><div class="line">[ 33%] Built target neo</div><div class="line">[ 68%] Built target hphp_runtime_static</div><div class="line">[ 96%] Built target ext_hhvm_static</div><div class="line">[100%] Built target hphp_util</div><div class="line">[100%] Built target vixl</div><div class="line">[100%] Built target hphp_zend</div><div class="line">[100%] Generating systemlib.php</div><div class="line">[100%] Built target systemlib</div><div class="line">Linking CXX executable hhvm</div><div class="line">Embedding php in hhvm</div><div class="line">[100%] Built target hhvm</div><div class="line">Install the project...</div><div class="line">-- Install configuration: ""</div><div class="line">-- Installing: /usr/lib/libzip.a</div><div class="line">-- Installing: /usr/lib/libzip.so</div><div class="line">-- Removed runtime path from "/usr/lib/libzip.so"</div><div class="line">-- Installing: /usr/include/zipconf.h</div><div class="line">-- Installing: /usr/include/zip.h</div><div class="line">-- Installing: /usr/bin/hhvm</div><div class="line">-- Installing: /usr/bin/hphpize</div><div class="line">➜ hhvm git:(HHVM-3.0) ✗</div></pre></td></tr></table></figure>
<p>来，下面就是HHVM的测试了。</p>
<p>首先看下–version和–help<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div><div class="line">46</div><div class="line">47</div><div class="line">48</div><div class="line">49</div><div class="line">50</div><div class="line">51</div><div class="line">52</div><div class="line">53</div><div class="line">54</div><div class="line">55</div></pre></td><td class="code"><pre><div class="line">➜ ~ hhvm --version</div><div class="line">HipHop VM 3.0.1 (rel)</div><div class="line">Compiler: tags/HHVM-3.0.1-0-g1da451b79f40686de6472d23cf90fdd09fa4dc23</div><div class="line">Repo schema: 11f0d546efba889ced1f9b92d9c9249f494d0b84</div><div class="line">➜ ~ hhvm --help</div><div class="line">Usage:</div><div class="line"> hhvm [-m <mode>] [<options>] [<arg1>] [<arg2>] ...</div><div class="line">Options:</div><div class="line"> --help display this message</div><div class="line"> --version display version number</div><div class="line"> --php emulate the standard php command line</div><div class="line"> --compiler-id display the git hash for the compiler</div><div class="line"> --repo-schema display the repository schema id</div><div class="line"> -m [ --mode ] arg (=run) run | debug (d) | server (s) | daemon |</div><div class="line"> replay | translate (t)</div><div class="line"> -a [ --interactive ] Shortcut for --mode debug</div><div class="line"> -c [ --config ] arg load specified config file</div><div class="line"> -v [ --config-value ] arg individual configuration string in a </div><div class="line"> format of name=value, where name can be</div><div class="line"> any valid configuration for a config </div><div class="line"> file</div><div class="line"> -p [ --port ] arg (=-1) start an HTTP server at specified port</div><div class="line"> --port-fd arg (=-1) use specified fd instead of creating a </div><div class="line"> socket</div><div class="line"> --ssl-port-fd arg (=-1) use specified fd for SSL instead of </div><div class="line"> creating a socket</div><div class="line"> --admin-port arg (=-1) start admin listener at specified port</div><div class="line"> --debug-config arg load specified debugger config file</div><div class="line"> -h [ --debug-host ] [=arg(=localhost)]</div><div class="line"> connect to debugger server at specified</div><div class="line"> address</div><div class="line"> --debug-port arg (=-1) connect to debugger server at specified</div><div class="line"> port</div><div class="line"> --debug-extension arg PHP file that extends y command</div><div class="line"> --debug-cmd arg executes this debugger command and </div><div class="line"> returns its output in stdout</div><div class="line"> --debug-sandbox arg (=default) initial sandbox to attach to when </div><div class="line"> debugger is started</div><div class="line"> -u [ --user ] arg run server under this user account</div><div class="line"> -f [ --file ] arg executing specified file</div><div class="line"> -l [ --lint ] arg lint specified file</div><div class="line"> -w [ --show ] arg output specified file and do nothing </div><div class="line"> else</div><div class="line"> --temp-file file specified is temporary and removed</div><div class="line"> after execution</div><div class="line"> --count arg (=1) how many times to repeat execution</div><div class="line"> --no-safe-access-check arg (=0) whether to ignore safe file access </div><div class="line"> check</div><div class="line"> --arg arg arguments</div><div class="line"> --extra-header arg extra-header to add to log lines</div><div class="line"> --build-id arg unique identifier of compiled server </div><div class="line"> code</div><div class="line"> --instance-id arg unique identifier of server instance</div><div class="line"> --xhprof-flags arg (=0) Set XHProf flags</div><div class="line">➜ ~</div></pre></td></tr></table></figure></p>
<p>1、CPU密集型测试<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div></pre></td><td class="code"><pre><div class="line">➜ hhvm_test cat t1.php </div><div class="line"><?php</div><div class="line">function fib($n)</div><div class="line">{</div><div class="line"> if ($n <= 2)</div><div class="line"> return 1;</div><div class="line"> else</div><div class="line"> return fib($n-1) + fib($n-2);</div><div class="line">}</div><div class="line">$n = 36;</div><div class="line">printf("fib(%d) = %d\n", $n, fib($n, 2));</div><div class="line">?></div><div class="line">➜ hhvm_test time php t1.php </div><div class="line">fib(36) = 14930352</div><div class="line">php t1.php 10.04s user 0.02s system 99% cpu 10.072 total</div><div class="line">➜ hhvm_test time hhvm t1.php </div><div class="line">fib(36) = 14930352</div><div class="line">hhvm t1.php 0.52s user 0.12s system 52% cpu 1.226 total</div><div class="line">➜ hhvm_test</div></pre></td></tr></table></figure></p>
<p>2、内存密集型测试<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div></pre></td><td class="code"><pre><div class="line">➜ hhvm_test cat t2.php </div><div class="line"><?php</div><div class="line">ini_set('memory_limit','1024M');</div><div class="line">$arr = array();</div><div class="line">for($i = 0; $i < 2000000 ; $i++) {</div><div class="line"> $arr[$i] = $i; </div><div class="line">}</div><div class="line">$arr2 = array();</div><div class="line">foreach($arr as $val){</div><div class="line"> $arr2[] = $val . $val;</div><div class="line">}</div><div class="line">?></div><div class="line">➜ hhvm_test time php t2.php </div><div class="line">php t2.php 2.29s user 1.13s system 99% cpu 3.427 total</div><div class="line">➜ hhvm_test time hhvm t2.php </div><div class="line">hhvm t2.php 1.60s user 0.73s system 79% cpu 2.934 total</div><div class="line">➜ hhvm_test</div></pre></td></tr></table></figure></p>
<p>从上面2个测试可以看出，CPU的消耗明显减少。</p>
<hr>
<p>最后，这边安装HHVM的目的就是想要用HHVM来跑WordPress（nginx -> fastcgi -> hhvm），按照官方的教程（<a href="https://github.com/facebook/hhvm/wiki/fastcgi）来配置了FastCGI" target="_blank" rel="external">https://github.com/facebook/hhvm/wiki/fastcgi）来配置了FastCGI</a> ，但是因为本blog是跑在ssl/(https)上的，测试下来有证书问题。</p>
<p>正在研究HHVM SSL证书问题。</p>
<p>（未完待续）</p>
]]></content>
<summary type="html">
<p>前几天（03月21日），Facebook 正式发布专门用于 HHVM 的编程语言 Hack，然后就突然想装个HHVM来跑我的blog玩一下，后面也确实开始折腾了。</p>
<p>03月22日晚上就试水了下，按GitHub上或者是HHVM官网上的教程来的，提示依赖的几个编译环
</summary>
<category term="LNMP Stack" scheme="http://zin.so/categories/LNMP-Stack/"/>
<category term="HHVM" scheme="http://zin.so/tags/HHVM/"/>
</entry>
<entry>
<title>本blog上的Drawing特效</title>
<link href="http://zin.so/2014/03/25/drawing/"/>
<id>http://zin.so/2014/03/25/drawing/</id>
<published>2014-03-25T09:24:40.000Z</published>
<updated>2016-08-29T05:38:34.000Z</updated>
<content type="html"><![CDATA[<p>用本篇文章来发布研究drawing.js的一些log</p>
<p>PS：其实这个js是以前从Sivan的blog（ <a href="http://lightcss.com/" target="_blank" rel="external">http://lightcss.com/</a> ）上“偷”来的。</p>
<p>源码GitHub地址：<a href="https://github.com/Zinway-Liu/drawing" title="Drawing" target="_blank" rel="external">https://github.com/Zinway-Liu/drawing</a></p>
<p> </p>
]]></content>
<summary type="html">
<p>用本篇文章来发布研究drawing.js的一些log</p>
<p>PS：其实这个js是以前从Sivan的blog（ <a href="http://lightcss.com/" target="_blank" rel="external">http://lightcss.
</summary>
<category term="JavaScript" scheme="http://zin.so/categories/JavaScript/"/>
<category term="js" scheme="http://zin.so/tags/js/"/>
</entry>
<entry>
<title>首页refresh重定向</title>
<link href="http://zin.so/2014/03/19/meta-refresh/"/>
<id>http://zin.so/2014/03/19/meta-refresh/</id>
<published>2014-03-19T06:20:32.000Z</published>
<updated>2016-08-29T05:38:34.000Z</updated>
<content type="html"><![CDATA[<p>昨天评估了半天，想用前端的方式来实现类似nginx rewrite这样一个重定向的效果，主要是想80重定向到443。<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div></pre></td><td class="code"><pre><div class="line">server {</div><div class="line"> listen 80;</div><div class="line"> server_name zinway.me;</div><div class="line"> rewrite ^(.\*) https://$server_name$1 permanent;</div><div class="line">}</div></pre></td></tr></table></figure></p>
<p>看到“baidu.com”首页有这样一个通过meta refresh的方式来重定向到“www.baidu.com”的案例。<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div></pre></td><td class="code"><pre><div class="line">➜ ~ curl -vv baidu.com</div><div class="line">\* Adding handle: conn: 0x7f8261004400</div><div class="line">\* Adding handle: send: 0</div><div class="line">\* Adding handle: recv: 0</div><div class="line">\* Curl_addHandleToPipeline: length: 1</div><div class="line">\* - Conn 0 (0x7f8261004400) send_pipe: 1, recv_pipe: 0</div><div class="line">\* About to connect() to baidu.com port 80 (#0)</div><div class="line">\* Trying 220.181.111.85...</div><div class="line">\* Connected to baidu.com (220.181.111.85) port 80 (#0)</div><div class="line">> GET / HTTP/1.1</div><div class="line">> User-Agent: curl/7.30.0</div><div class="line">> Host: baidu.com</div><div class="line">> Accept: \*/\*</div><div class="line">></div><div class="line">< HTTP/1.1 200 OK</div><div class="line">< Date: Wed, 19 Mar 2014 04:28:24 GMT</div><div class="line">\* Server Apache is not blacklisted</div><div class="line">< Server: Apache</div><div class="line">< Cache-Control: max-age=86400</div><div class="line">< Expires: Thu, 20 Mar 2014 04:28:24 GMT</div><div class="line">< Last-Modified: Tue, 12 Jan 2010 13:48:00 GMT</div><div class="line">< ETag: "51-4b4c7d90"</div><div class="line">< Accept-Ranges: bytes</div><div class="line">< Content-Length: 81</div><div class="line">< Connection: Keep-Alive</div><div class="line">< Content-Type: text/html</div><div class="line"><</div><div class="line"><html></div><div class="line"><meta http-equiv="refresh" content="0;url=http://www.baidu.com/"></div><div class="line"></html></div><div class="line">\* Connection #0 to host baidu.com left intact</div><div class="line">➜ ~</div></pre></td></tr></table></figure></p>
<p>这种方法把重定向丢给浏览器来处理，某种程度上减少了server端的开销，感觉不错。</p>
<p>但是我想实现的更复杂一些，通过前端的方式获取URL里面域名后面的参数（pathname，search，hash等），然后进行相应的重定向 。或许可以通过JS location.replace()来刷新。<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div></pre></td><td class="code"><pre><div class="line"><script></div><div class="line">document.location.replace(document.location.toString().replace("http:","https:"))</div><div class="line"></script></div></pre></td></tr></table></figure></p>
<p>URL字符串的处理，我这边的需求只要把”http:”替换成”https:”就行了。</p>
<p>最后，突然也想到前端是只要处理下URL字符串就行了，但是后端还是需要做个“<span style="color: #ff0000;"> * </span>”匹配到上面这个“index.html”的文件，server端还是会有一定的开销（跑一遍正则，然后丢给index.html，不亚于跑一遍rewrite）。</p>
<p>总结：貌似这样子搞下来，相比于server端直接用nginx rewrite一下有点得不偿失的感觉，特别是相比于只对首页进行meta refresh。而且一般重定向的话，也都是首页用到的多，具体的文档重定向倒是少见。</p>
<p>所以目前最后评估下来的方案是：要么就用meta refresh到首页；要么就用nginx的rewrite。折腾不来 ╮(╯▽╰)╭</p>
]]></content>
<summary type="html">
<p>昨天评估了半天，想用前端的方式来实现类似nginx rewrite这样一个重定向的效果，主要是想80重定向到443。<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><div cla
</summary>
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<entry>
<title>Git常用命令别名</title>
<link href="http://zin.so/2014/03/18/git-alias/"/>
<id>http://zin.so/2014/03/18/git-alias/</id>
<published>2014-03-18T06:22:47.000Z</published>
<updated>2016-08-29T05:38:34.000Z</updated>
<content type="html"><![CDATA[<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div></pre></td><td class="code"><pre><div class="line"># Aliases</div><div class="line">alias g='git'</div><div class="line">alias gst='git status'</div><div class="line">alias gd='git diff'</div><div class="line">alias gdc='git diff --cached'</div><div class="line">alias gl='git pull'</div><div class="line">alias gup='git pull --rebase'</div><div class="line">alias gp='git push'</div><div class="line">alias gd='git diff'</div><div class="line">alias gc='git commit -v'</div><div class="line">alias gc!='git commit -v --amend'</div><div class="line">alias gca='git commit -v -a'</div><div class="line">alias gca!='git commit -v -a --amend'</div><div class="line">alias gcmsg='git commit -m'</div><div class="line">alias gco='git checkout'</div><div class="line">alias gcm='git checkout master'</div><div class="line">alias gr='git remote'</div><div class="line">alias grv='git remote -v'</div><div class="line">alias grmv='git remote rename'</div><div class="line">alias grrm='git remote remove'</div><div class="line">alias grset='git remote set-url'</div><div class="line">alias grup='git remote update'</div><div class="line">alias grbi='git rebase -i'</div><div class="line">alias grbc='git rebase --continue'</div><div class="line">alias grba='git rebase --abort'</div><div class="line">alias gb='git branch'</div><div class="line">alias gba='git branch -a'</div><div class="line">alias gcount='git shortlog -sn'</div><div class="line">alias gcl='git config --list'</div><div class="line">alias gcp='git cherry-pick'</div><div class="line">alias glg='git log --stat --max-count=10'</div><div class="line">alias glgg='git log --graph --max-count=10'</div><div class="line">alias glgga='git log --graph --decorate --all'</div><div class="line">alias glo='git log --oneline'</div><div class="line">alias gss='git status -s'</div><div class="line">alias ga='git add'</div><div class="line">alias gm='git merge'</div><div class="line">alias grh='git reset HEAD'</div><div class="line">alias grhh='git reset HEAD --hard'</div><div class="line">alias gclean='git reset --hard &amp;&amp; git clean -dfx'</div><div class="line">alias gwc='git whatchanged -p --abbrev-commit --pretty=medium'</div></pre></td></tr></table></figure>
]]></content>
<summary type="html">
<figure class="highlight plain"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</di
</summary>
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