Hi Anand, strongswan uses standard libc printf hooks if they are available. Otherwise vstr is used to emulate printf hooks. The strongSwan printf_hook_t framework is defined here:
https://git.strongswan.org/?p=strongswan.git;a=tree;f=src/libstrongswan/utils/printf_hook;h=2c506f08bef7aa1953a2f138f4d649843d181fb6;hb=HEAD E.g. the printf_hook handler for %N (printing of enum_name_t types) is defined here: https://git.strongswan.org/?p=strongswan.git;a=blob;f=src/libstrongswan/utils/enum.c;h=1cead77cae75bc9de50abf118f259e3e283663e9;hb=9ad147ac63df03740a156fd1f3b017ef1d0e89ae#l137 and the all hooks used by libstrongswan are assigned here: https://git.strongswan.org/?p=strongswan.git;a=blob;f=src/libstrongswan/library.c;h=4f79dcc5b12f7601ff2df4c5ad319108f3e60476;hb=9ad147ac63df03740a156fd1f3b017ef1d0e89ae#l338 Hope this helps Andreas On 13.01.2017 13:46, Anand Murali wrote:
Hi, I have been going through the source code of strongswan. I came across lots of custom format specifiers like: DBG1(DBG_ENC, "U_INT Type *%N* is not supported", encoding_type_names, int_type); DBG2(DBG_CFG, "received proposals: *%#P*", proposals); I'm new to this. Have been going through this code for a week. I'm not able to figure out how these are evaluated. Any help to understand how these are evaluated? If there is an internal code that does this parsing, can you point me to that file? Thanks
====================================================================== Andreas Steffen [email protected] strongSwan - the Open Source VPN Solution! www.strongswan.org Institute for Internet Technologies and Applications University of Applied Sciences Rapperswil CH-8640 Rapperswil (Switzerland) ===========================================================[ITA-HSR]==
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