actube/src/cw/format_dot11_fc.c

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#include "dot11.h"
#include "format.h"
static int add_flag(char *dst,int fc, int flag, char *name,char **delim)
{
if (! (fc&flag) )
return 0;
int n = sprintf(dst,"%s%s",*delim,name);
*delim=":";
return n;
}
int format_dot11_fc(char *dst, uint16_t fc)
{
char *d = dst;
d+=sprintf(d,"Ver: %d ",dot11_fc_get_version(fc));
d+=sprintf(d,"Type: %d ",dot11_fc_get_type(fc));
d+=sprintf(d,"Subtype: %d ",dot11_fc_get_subtype(fc));
d+=sprintf(d,"Flags: [");
char *delim = "";
d+=add_flag(d,fc,DOT11_FC_FLAG_FROM_DS,"from_ds",&delim);
d+=add_flag(d,fc,DOT11_FC_FLAG_TO_DS,"to_ds",&delim);
d+=add_flag(d,fc,DOT11_FC_FLAG_MOREFRAGS,"more_frags",&delim);
d+=add_flag(d,fc,DOT11_FC_FLAG_RETRY,"retry",&delim);
d+=add_flag(d,fc,DOT11_FC_FLAG_POWERMGMT,"pwrmgmt",&delim);
d+=add_flag(d,fc,DOT11_FC_FLAG_MOREDATA,"more data",&delim);
d+=add_flag(d,fc,DOT11_FC_FLAG_PROTECTED,"protected",&delim);
d+=add_flag(d,fc,DOT11_FC_FLAG_ORDER,"order",&delim);
d+=sprintf(d,"]");
return d-dst;
}