我正在使用radius中的rlm_python模块，并从coovachilli获取DHCP位置option82，其以十六进制或二进制格式呈现。
将其捕获为字符串会显示此值：\001\027\002\025\001+\001\024，但是Python显示的值被截断了，因为option82包含在TLVs-type,length,values中编码的suboptions，这意味着该字段以类型0x01(circuit ID, per RFC 3046)开头，后跟一个字节长度。
你有什么办法可以正确捕获并解包选项？
我已经使用了struct.unpack来解包该字符串，但它没有意义...因为它没有告诉我关于option82字段中打包的suboptions。
Python 2.4.3 (#1, May 5 2011, 16:39:10)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-50)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from struct import *
>>> unpack('=hhl',"\001\027\002\025\001+\001\024" )
(5889, 5378, 335620865)
有什么想法吗？
更新：
Coovachilli编译时使用--locationopt82选项，并将位置作为属性发送，类似于以下内容...
rad_recv: Accounting-Request packet from host 10.66.53.49 port 53178, id=101, length=342
ChilliSpot-Version = "1.3.0"
ChilliSpot-Acct-View-Point = ChilliSpot-Client-View-Point
Event-Timestamp = "Apr 18 2013 11:59:16 BST"
User-Name = "3C-D0-F8-4A-05-68"
Acct-Input-Octets = 0
Acct-Output-Octets = 22851
Acct-Input-Gigawords = 0
Acct-Output-Gigawords = 0
Acct-Input-Packets = 0
Acct-Output-Packets = 370
Acct-Session-Time = 5401
ChilliSpot-Session-State = Authorized
Acct-Status-Type = Interim-Update
Acct-Session-Id = "516fbceb00000002"
Framed-IP-Address = 10.75.33.46
NAS-Port-Type = Wireless-802.11
NAS-Port = 2
NAS-Port-Id = "00000002"
Calling-Station-Id = "3C-D0-F8-4A-05-68"
Called-Station-Id = "00-50-56-B7-66-00"
NAS-IP-Address = 10.75.32.7
ChilliSpot-Location = "\001\030\002\026\001+\001\024"
ChilliSpot-Location-Change-Count = 15
NAS-Identifier = "VLAN299-REGENT"
WISPr-Location-ID = "isocc=GR,cc=44,ac=01200,network=mywifi,my_Network_regent"
WISPr-Location-Name = "REGENT"
FreeRADIUS有rlm_python模块，该模块寻找会计请求。
def accounting(p):
file = open("/tmp/test.log","a")
username = None
chillilocation = None
output = StringIO.StringIO()
for t in p:
if t[0] == 'User-Name':
username = t[1]
elif t[0] == 'ChilliSpot-Location':
chillilocation = t[1]a
output.write(t[1])
content = output.getvalue()
file.write("I am being called in radius accouting section as %s and location is %s \n" % (username,content))
file.close()
print "---Accounting---"
radiusd.radlog(radiusd.L_INFO, '*** radlog call in accounting (0) ***')
print
print p
return radiusd.RLM_MODULE_OK
我尝试将ChilliSpot-Location存储在
string和stringIO中，并使用struct进行解包，但是没有成功。看起来它是以TLV格式存储的... 有什么想法可以将其剥离出来吗？
ChilliSpot-Location应该是一个可读的字符串。请参见规格和示例（向下浏览到中间某个位置，看到RADIUS Access-Request from CoovaChilli）。 - RedBaron