Re: C code rule modifying

[Philip Craig <philipc@snapgear.com>]

Charles Romestant wrote:
> Ok im trying to add the rule to a table named charz, here is the code :
> 
> char *command;
>         FILE *fp = popen("/sbin/iptables",'w');

That should be "w" (a string, not a char).

>         if (fp==NULL){
>         printf("\nerror opening pipe\n");
>         return -1;
>         }else{
>         sprintf(command,"-A charz -p tcp --dport %s --source %s -j
> %s\0",port,currentIp,action2);
>         printf("\n\n\n%s\n\n\n",command);
>         fwrite(command,strlen(command),1,fp);
>         pclose(fp);

If that still doesn't fix it then use valgrind to find the
exact line number.