ROS的DDNS指令碼

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ROS使用ADSL上網時，每次撥號IP都會改變，導致外網訪問ROS伺服器失敗，目前最常見的解決方案是使用DDNS這種動態網域名稱工具，在撥號後（IP發生變化後）通知DDNS伺服器更新IP，最終使用DDNS服務商提供的靜態網域名稱即可永久訪問這台伺服器。ROS官方僅支援changeip，但通過其它方法也可以實現支援花生殼，測試通過的指令碼如下：

一、國外changeip的指令碼，修改自changeip官方網站：

 1 # Define User Variables 2 :global ddnsuser "user" 3 :global ddnspass "password" 4 :global ddnshost "xxxx.onmypc.org" 5 :global ddnsinterface "changkuan" 6  7 # Define Global Variables 8 :global ddnsip 9 :global ddnslastip10 11 :if ([ :typeof $ddnslastip ] = nothing ) do={ :global ddnslastip "0" }12 13 # Grab the current IP address on that interface.14 :global ddnsip [ /ip address get [/ip address find interface=$ddnsinterface ] address ]15 :log info $ddnsip16 # Did we get an IP address to compare?17 :if ([ :typeof $ddnsip ] = nil ) do={18    :log info ("DDNS: No ip address present on " . $ddnsinterface . ", please check.")19 } else={20 21   :if ($ddnsip != $ddnslastip) do={22 23     :log info "DDNS: Sending UPDATE!"24     :log info [ :put [/tool dns-update name=$ddnshost address=[:pick $ddnsip 0 [:find $ddnsip "/"] ] key-name=$ddnsuser key=$ddnspass ] ]25     :global ddnslastip $ddnsip26 27   } else={ 28     :log info "DDNS: No update required."29   }30 31 }32 33 # End of script

二、國內花生殼的指令碼，官方提供的指令碼每次都會更新，根據上述changip指令碼修改之，實現IP變化後才更新：

 1 local server "http://ddns.oray.com" 2 local domain "xxxx.oicp.net" 3 local users "user" 4 local paswd "password" 5 local adslinterface "changkuan" 6 local ipaddr 7 :global lastipaddr 8  9 set ipaddr [/ip address get [/ip address find interface=$adslinterface] address]10 :if ([ :typeof $ipaddr ] = nil ) do={11    :log info ("ORAY: No ip address present on " . $adslinterface . ", please check.")12 } else={13    set ipaddr [:pick $ipaddr 0 ([len $ipaddr] -3)]   14    :log info $ipaddr15    :if ($ipaddr != $lastipaddr) do={16     local par "/ph/update?&hostname=$domain&myip=$ipaddr"17     :log info "ORAY: Sending UPDATE!"18     :log info [:put [ /tool fetch url=($server . $par) mode=http user=$users password=$paswd ] ]19     :global lastipaddr $ipaddr20 21   } else={ 22     :log info "ORAY: No update required."23   }24 }

 

ROS的DDNS指令碼