cgi/system/network.lua

   1 #!/usr/bin/lua
   2
   3 dofile "libutil.lua"
   4
   5 -- retun table {mode(dhcp,static), ip, netmask, broadcast, gw, dns}
   6 function get_network()
   7                                 local _tbl = {}
   8                                 local _t = myread("/etc/rc.conf")
   9                                 _,_,_s = string.find(_t, "\neth0=(.-)\n")
  10                                 if (string.find(_s, "dhcp")) then
  11                                                                 _tbl["mode"] = "dhcp"
  12                                                                 _s = myexec("ifconfig eth0")
  13                                                                 string.gsub(_s, "inet addr:(.-)%s*Bcast:(.-)%s*Mask:(.-)\n", function(ip,bc,nm)
  14                                                                                                 _tbl["ip"] = ip
  15                                                                                                 _tbl["netmask"] = nm
  16                                                                                                 _tbl["broadcast"] = bc
  17                                                                 end)
  18                                                                 _s = myexec("route -n")
  19                                                           _,_,_s = string.find(_s, "\n0.0.0.0%s*\t*(.-)%s*\t*0.0.0.0")
  20                                                                 _tbl["gateway"] = _s
  21                                                                 _s = myread("/etc/resolv.conf")
  22                                                                 _tbl["dns"]=""
  23                                                                 string.gsub(_s, "nameserver%s+(.-)\n", function(v)
  24                                                                                                 _tbl["dns"] = _tbl["dns"].." "..v
  25                                                                 end)
  26
  27
  28                                 else
  29                                                                 _tbl["mode"] = "static"
  30                                                                 string.gsub(_s, "eth%d%s*(.-)%s*netmask%s*(%S+%d)", function(ip,nm)
  31                                                                                                 _tbl["ip"] = ip
  32                                                                                                 _tbl["netmask"] = nm
  33 --                                                                                              _tbl["broadcast"] = bc
  34                                                                 end)
  35                                                                 _,_,_s = string.find(_t, "\ngateway=\"default gw (.-)\"\n")
  36                                                                 if _s then _tbl["gateway"]=_s else _tbl["gateway"]="" end
  37                                                                 _tbl["dns"]=""
  38                                                                 _s = myread("/etc/resolv.conf")
  39                                                                 string.gsub(_s, "nameserver%s*(%S+)", function(v)
  40                                                                                                 _tbl["dns"] = v.." ".._tbl["dns"]
  41                                                                 end )
  42                                 end
  43                                 return _tbl
  44 end
  45
  46 function set_network(tbl)
  47                                 local _current_net_tbl = get_network()
  48                                 local _t = tbl
  49                                 if (_t.mode == _current_net_tbl.mode) then print("equal mode") return end
  50                                 if _t.mode == "dhcp" then
  51                                                                 file_gsub("/etc/rc.conf", "(\neth0=.-\n)", "\neth0=\"dhcp\"\n")
  52                                                                 file_gsub("/etc/rc.conf", "(\ngateway=)", "\n#gateway=")
  53                                                                 myexec("sudo killall dhcpcd; sudo dhcpcd eth0")
  54                                 else
  55 --                                                              local _ip= "eth0 ".._t.ip.." netmask ".._t.netmask.." broadcast ".._t.broadcast
  56                                                                 local _ip= "eth0 ".._t.ip.." netmask ".._t.netmask
  57                                                                 local _gw= "default gw ".._t.gateway
  58                                                                 file_gsub("/etc/rc.conf", "(\neth0=.-\n)", "\neth0=\"".._ip.."\"\n")
  59                                                                 file_gsub("/etc/rc.conf", "(\n#gateway.-\n)", "\ngateway=\"".._gw.."\"\n")
  60                                                                 myexec("sudo ifconfig ".._ip)
  61                                                                 myexec("sudo route add -net ".._gw)
  62                                                                 local _s = myread("/etc/resolv.conf")
  63                                                                 _s = string.gsub(_s, "nameserver .-\n", "")
  64                                                                 for _dns in string.gmatch(_t.dns, "%S+") do
  65                                                                                                 _s = string.gsub(_s, "$", "nameserver ".._dns.."\n")
  66                                                                 end
  67                                                                 mywrite("/etc/resolv.conf", _s)
  68                                 end
  69
  70 end
  71
  72 local qp = ui_getqp()
  73 local b = {}
  74
  75 if qp.todo then
  76                                 set_network(qp)
  77 else
  78                                 b = get_network()
  79                                 if b.mode == "dhcp"  then
  80                                                                 r_dhcp = "dhcp checked"
  81                                                                 r_static= "static"
  82                                 else
  83                                                                 r_dhcp = "dhcp"
  84                                                                 r_static= "static checked"
  85                                 end
  86
  87 print([[<h3>网络设置</h3>
  88                                 <form action="system_network.cgi">
  89                                 <div class="table_input_body">
  90
  91                                 <table cellspacing="2" cellpadding="8" border="0" width="100%">
  92
  93                                 <tr><td class=color_table_heading>Mode</td>
  94                                 <td class=color_table_row2>
  95                                 <input type=radio align=left name="mode" value=]]..r_dhcp..[[>自动获得 IP 地址
  96                                 <input type=radio name="mode" value=]]..r_static..[[>使用下面的 IP 地址</td></tr>
  97
  98                                  <tr>
  99                                   <td class=color_table_heading >IP 地址</td><td class=color_table_row1 >
 100                                         <input type=text name="ip" value=]]
 101                                         ..b.ip..
 102
 103                                 [[></td></tr>
 104                                 <tr><td class=color_table_heading>子网掩码</td>
 105                                 <td class=color_table_row2>
 106                                 <input type=text name="netmask" value=
 107                                 ]]
 108                                 ..b.netmask..
 109
 110                                 [[></td></tr>
 111                                 <tr><td class=color_table_heading>默认网关</td>
 112                                 <td class=color_table_row1>
 113                                 <input type=text name="gateway" value=
 114                                 ]]
 115                                 ..b.gateway..
 116
 117                                 [[></td></tr>
 118                                 <tr><td class=color_table_heading>DNS 服务器</td>
 119                                 <td class=color_table_row2>
 120                                 <input type=text name="dns" value=
 121                                 ]]
 122                                 ..b.dns..
 123
 124                                 [[></td></tr>
 125                                 </table></div>
 126                                 <input type=hidden name="todo" value=todo>
 127                                 <input type=submit value="提交">
 128                                 </form>]])
 129
 130 end