[strongSwan] Adding extra logs in strongswan-4.3.6/src/libfreeswan

[divya mohan]

Hi,

I am debugging something, and I wanted to add some extra logs in
starter code for this.

I am trying to add logs in starter/*.c and libfreeswan/*.c.
In starter/*.c, I added the logs using DBG(DBG_CONTROL,
DBG_log("...")); and I can view these logs (as shown below) while
running the binary.

----------------------------------------------------------
# ipsec start --debug-all  --nofork
Starting strongSwan 4.3.6 IPsec [starter]...
| Loading config setup
|   charonstart=yes
|   plutostart=no
|   uniqueids=no
|   charondebug=knl 0,enc 0,net 0
| Loading conn %default
|   auto=route
|   keyexchange=ikev2
|   reauth=no
| Loading conn 'rule0~vpn0'
|   rekeymargin=720
|   rekeyfuzz=100%
|   left=90.90.90.101
|   right=90.90.90.102
|   leftsubnet=104.1.0.2/32
|   rightsubnet=104.1.0.3/32
|   leftprotoport=%any
| ### divya: in load_conn, value of string is %any
| ### divya: in load_conn has_port_wildcard is 0
|   rightprotoport=%any
.
.
.
-------------------------------------------------------------------------


However, I tried to add logs in libfreeswan/ttoprotoport.c by
including required headers & using DBG_log, and this does not seem to
work. Also I tried adding printf, hoping the logs would come when I
run ipsec (with --no-fork) from console, but that too did not work.

Could someone help to find out how to do this.


Thanks & Regards,
Divya