夜弓的咖啡馆

Google正要离开中国。

计划今天晚上去来福士16楼为Google献上一束鲜花。

Audio clip: Adobe Flash Player (version 9 or above) is required to play this audio clip. Download the latest version here. You also need to have JavaScript enabled in your browser.

此外，还特意写了一个bash脚本来记录下这一切。以一个程序员的方法来纪念。

#!/bin/bash
export PATH="/bin:/usr/bin"

LOG=~/google.log
TMP=/tmp/google.index.html
FMT="+%Y-%m-%d %H:%M:%S"
HOST=www.g.cn
NS=202.96.209.5

while [ 1 ]
do
  date "$FMT" | tee -a $LOG
  ips=`dig @$NS $HOST | sed -n -r 's/^.*IN\s+A\s+(.*)$/\1/p'`
  if [ -n "$ips" ]
  then
    for ip in $ips
    do
      wget -O $TMP $ip > /dev/null 2> /dev/null
      google=`cat $TMP | sed -n -r "s/^.*Google.*$/OK/p" \
        | sed -n -r '1p'`
      if [ -n "$google" ]
      then
        echo "$ip OK" | tee -a $LOG
      else
        echo "$ip ERROR" | tee -a $LOG
      fi
    done
  else
    echo "Can't resolve the host: $HOST" | tee -a $LOG
  fi
  sleep 2
done

---

Updated on 15th Jan 2010:
升级了一下脚本，使得: 1.通过反向解析检测Google是否遭到域名劫持; 2. 支持同时检测多个Google旗下的域名.

#!/bin/bash
export PATH="/bin:/usr/bin"

LOG=~/google.log
TMP=/tmp/google.index.html
FMT="+%Y-%m-%d %H:%M:%S"
GOOGLE_DOMAINS=("www.g.cn" "www.google.cn" "www.google.com")
NS=202.96.209.5

while [ 1 ]
do
  date "$FMT" | tee -a $LOG
  for domain in ${GOOGLE_DOMAINS[@]}
  do
    echo $domain | tee -a $LOG
    ips=`dig @$NS $domain \
      | sed -n -r 's/^.*IN\s+A\s+(.*)$/\1/p'`
    if [ -n "$ips" ]
    then
      for ip in $ips
      do
        server=`nslookup -q=ptr $ip \
          | sed -n -r 's/^.*name = (.*)$/\1/p'`
        is_server_1e100=`echo $server \
          | sed -n -r 's/^.+\.1e100\.net\./OK/p'`
        if [ "$is_server_1e100" = "OK" ]
        then
          wget -O $TMP $ip > /dev/null 2> /dev/null
          is_google=`cat $TMP \
            | sed -n -r "s/^.*Google.*$/OK/p" | sed -n -r '1p'`
          if [ -n "$is_google" ]
          then
              echo "$ip OK" | tee -a $LOG
          else
              echo "$ip ERROR: NOT GOOGLE PAGE" | tee -a $LOG
          fi
        else
          echo "$ip ERROR: DONAME HIJACK" | tee -a $LOG
        fi
      done
    else
      echo "ERROR: STOP RESOLVE: $domain" | tee -a $LOG
    fi
  done
  echo "" | tee -a $LOG
  sleep 2
done

你可能会感兴趣

• 我是shell脚本控
• bash script notes (1)
• VIM tips (2)

Post by : cooper

Post under : Coding, Talking, bash, GFW, Google, linux, script, shell

on January 13th, 2010 | No Comments »

Notice : The music in the above article is offered just for trial, and not published under the general license of this blog.