Bug 83378

Summary: Error in user-level-ppp, if password begins char "!" and CHAP auth.
Product: Base System Reporter: Alexander <sasha>
Component: binAssignee: freebsd-bugs (Nobody) <bugs>
Status: Closed FIXED    
Severity: Affects Only Me    
Priority: Normal    
Version: Unspecified   
Hardware: Any   
OS: Any   

Description Alexander 2005-07-13 12:50:15 UTC 
FROM CLIENT (/var/log/ppp.log):
Jul 13 14:09:14 riba ppp[2687]: Phase: deflink: opening -> dial
Jul 13 14:09:14 riba ppp[2687]: Phase: deflink: dial -> carrier
Jul 13 14:09:14 riba ppp[2687]: Phase: deflink: carrier -> login
Jul 13 14:09:14 riba ppp[2687]: Phase: deflink: login -> lcp
Jul 13 14:09:16 riba ppp[2687]: Phase: deflink: his = CHAP 0x05, mine = none
Jul 13 14:09:16 riba ppp[2687]: Phase: Chap Input: CHALLENGE (31 bytes)
Jul 13 14:09:16 riba ppp[2687]: Warning: Chap: Read: Child terminated connection
Jul 13 14:09:16 riba ppp[2687]: Error: Chap: Child exited 255
Jul 13 14:09:19 riba ppp[2687]: Phase: Chap Input: CHALLENGE (31 bytes)
Jul 13 14:09:19 riba ppp[2687]: Warning: Chap: Read: Child terminated connection
Jul 13 14:09:19 riba ppp[2687]: Error: Chap: Child exited 255
Jul 13 14:09:22 riba ppp[2687]: Phase: Chap Input: CHALLENGE (31 bytes)
Jul 13 14:09:22 riba ppp[2687]: Warning: Chap: Read: Child terminated connection
Jul 13 14:09:22 riba ppp[2687]: Error: Chap: Child exited 255
Jul 13 14:09:25 riba ppp[2687]: Phase: deflink: read (0): Got zero bytes
Jul 13 14:09:25 riba ppp[2687]: Phase: deflink: Disconnected!
Jul 13 14:09:25 riba ppp[2687]: Phase: deflink: lcp -> logout
Jul 13 14:09:25 riba ppp[2687]: Phase: deflink: Disconnected!
Jul 13 14:09:25 riba ppp[2687]: Phase: deflink: logout -> hangup

FROM SERVER (/var/log/ppp.log):
Jul 13 14:09:03 wavegate ppp[26831]: Phase: deflink: Connected!
Jul 13 14:09:03 wavegate ppp[26831]: Phase: deflink: opening -> carrier
Jul 13 14:09:03 wavegate ppp[26831]: Phase: deflink: carrier -> lcp
Jul 13 14:09:03 wavegate ppp[26831]: Phase: bundle: Authenticate
Jul 13 14:09:03 wavegate ppp[26831]: Phase: deflink: his = none, mine = CHAP 0x0
Jul 13 14:09:03 wavegate ppp[26831]: Phase: Chap Output: CHALLENGE
Jul 13 14:09:09 wavegate last message repeated 2 times
Jul 13 14:09:12 wavegate ppp[26831]: Phase: Auth: No response from server
Jul 13 14:09:12 wavegate ppp[26831]: Phase: deflink: Disconnected!

Fix: 

remove first char "!" or use PAP auth.
How-To-Repeat: Example:
in /etc/ppp/ppp.conf

set authkey !Domino!
Comment 1 FUJISHIMA Satsuki freebsd_committer freebsd_triage 2005-07-14 05:45:56 UTC 
State Changed
From-To: open->closed

Just type 
man ppp | less +/"auth]key value" 
and you'll find the answer. 
... 
| If the first character of value is an exclamation mark (``!''), 
| ppp treats the remainder of the string as a program that must be 
| executed to determine the ``authname'' and ``authkey'' values. 
| 
| If the ``!'' is doubled up (to ``!!''), it is treated as a single 
| literal ``!'', 
...