Re: Problem with scan.c

Chris Flevotomos wrote:
> Hello all,
> 
> I have a problem while trying to scan a client.
> 
> I use the last version (bopm-3.1.2) with gcc version 3.2 20020903 (Red Hat Linux 8.0 3.2-7) on a Conference Room Server (1.8.4). I found out the right connregex and as I notice it gets the hostname, but it cannot resolve it to IP to scan it.

BOPM can't resolve hosts, see the BOPM list archives..
http://article.gmane.org/gmane.network.irc.bopm/1611/match=conferenceroom
looks relevant.

> When a user is connecting to the CR, bopm exits with Segmentation Fault. I tried to debug it as much as I could, and I saw that it cannot execute the following code, only if the user mask has a hostname (not an IP):
> 
>                   case OPM_ERR_BADADDR: 
>                      log_printf("OPM -> Bad address %s [%s].",
>                            ss->manual_target->name, ss->ip);
>                      break;
> 
> this is a part of :
> 
>             if((ret = opm_scan(scs->scanner, ss->remote)) != OPM_SUCCESS)
>             {
>                switch(ret)
>                {
>                   case OPM_ERR_NOPROTOCOLS:
>                      continue;
>                      break;
>                   case OPM_ERR_BADADDR: 
>                      log_printf("OPM -> Bad address %s [%s].",
>                            ss->manual_target->name, ss->ip);
>                      break;
>                     default:
>                      log_printf("OPM -> Unknown error %s [%s].",
>                            ss->manual_target->name, ss->ip);
>                      break;
>                }
>             } 
> 
> When the program tries to execute the ss-manual_target->name then it crashes.. If I remove this variable it can't resolve the hostname but it doesn't crash.

This seems to be a bug, but as you said it only happens when BOPM is configured
incorrectly. (And it's just a null pointer dereference).