FreeRADIUS3 - ERROR: exec的解析输出失败，期望操作符

Question

FreeRADIUS 3用于OTP身份验证，身份验证成功，但是FreeRADIUS无法解析响应。

发送测试命令并监视调试输出(radiusd -X)时，会出现如下所示的错误，即使外部程序的响应似乎令人满意，输出仍未被解析：

# below, totp.py generates a TOTP for johnboy, to aid testing
# using pyotp package to make testing easier...

radtest -t mschap johnboy $(./totp.py) localhost 0 testing123

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(4) eap: No EAP-Message, not doing EAP
(4)     [eap] = noop
(4)     [expiration] = noop
(4)     [logintime] = noop
(4) multiotp: Executing: /usr/local/bin/multiotp.php '%{User-Name}' '%{User-Password}' -request-nt-key -src=%{Packet-Src-IP-Address} -chap-challenge=%{CHAP-Challenge} -chap-password=%{CHAP-Password} -ms-chap-challenge=%{MS-CHAP-Challenge} -ms-chap-response=%{MS-CHAP-Response} -ms-chap2-response=%{MS-CHAP2-Response}:
(4) multiotp: EXPAND %{User-Name}
(4) multiotp:    --> johnboy
(4) multiotp: EXPAND %{User-Password}
(4) multiotp:    --> 
(4) multiotp: EXPAND -src=%{Packet-Src-IP-Address}
(4) multiotp:    --> -src=127.0.0.1
(4) multiotp: EXPAND -chap-challenge=%{CHAP-Challenge}
(4) multiotp:    --> -chap-challenge=
(4) multiotp: EXPAND -chap-password=%{CHAP-Password}
(4) multiotp:    --> -chap-password=
(4) multiotp: EXPAND -ms-chap-challenge=%{MS-CHAP-Challenge}
(4) multiotp:    --> -ms-chap-challenge=0xf54c102e95a800d8
(4) multiotp: EXPAND -ms-chap-response=%{MS-CHAP-Response}
(4) multiotp:    --> -ms-chap-response=0x0001000000000000000000000000000000000000000000000000e3004419ce4b084c0b073836fd40f3828fcc7c4223b0dcc5
(4) multiotp: EXPAND -ms-chap2-response=%{MS-CHAP2-Response}
(4) multiotp:    --> -ms-chap2-response=
(4) multiotp: ERROR: Failed parsing output from: /usr/local/bin/multiotp.php '%{User-Name}' '%{User-Password}' -request-nt-key -src=%{Packet-Src-IP-Address} -chap-challenge=%{CHAP-Challenge} -chap-password=%{CHAP-Password} -ms-chap-challenge=%{MS-CHAP-Challenge} -ms-chap-response=%{MS-CHAP-Response} -ms-chap2-response=%{MS-CHAP2-Response}: Expecting opera
tor
(4) multiotp: ERROR: Program returned code (0) and output 'Filter-Id += "<user_group>",NT_KEY: A7C014D1209A4078F1003810BDB08BE6  '
(4)     [multiotp] = fail
(4)   } # authorize = fail
(4) Using Post-Auth-Type Reject
(4) # Executing group from file /etc/raddb/sites-enabled/default
(4)   Post-Auth-Type REJECT {
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Answer 1

如果其他人得到了“错误:失败的解析输出”，请检查multiotp.ini中的“显示日志”选项，如果启用了，也可能导致问题。

参考：https://github.com/multiOTP/multiotp/issues/125