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/* ISC license. */
#include <string.h>
#include <errno.h>
#include <skalibs/error.h>
#include <skalibs/allreadwrite.h>
#include <skalibs/stralloc.h>
#include <bcnm/wpactrl.h>
#include "wpactrl-internal.h"
static inline int filter_search (char const *s, size_t len, char const *filters, size_t filterlen)
{
while (filterlen)
{
size_t flen = strlen(filters) ;
if (len >= flen && !strncmp(filters, s, flen)) return 1 ;
filters += flen+1 ;
filterlen -= flen+1 ;
}
return 0 ;
}
static inline int validate (char const *s, size_t len)
{
if (len < 4) return 0 ;
if (s[0] != '<') return 0 ;
if (!memchr("123456789", s[1], 9)) return 0 ;
if (s[2] != '>') return 0 ;
if (strnlen(s, len) < len) return 0 ;
return s[len-1] == '\n' ;
}
int wpactrl_update (wpactrl_t *a)
{
unsigned int n = WPACTRL_RECV_MAX ;
unsigned int count = 0 ;
char buf[WPACTRL_PACKET_MAX+1] ;
while (n--)
{
ssize_t r = sanitize_read(wpactrl_fd_recv(a->fda, buf, WPACTRL_PACKET_MAX)) ;
if (r < 0) return -1 ;
if (!r) break ;
if (a->options & WPACTRL_OPTION_NOFILTER
|| (validate(buf, r) && filter_search(buf, r, a->filters.s, a->filters.len)))
{
buf[r] = 0 ;
if (!stralloc_catb(&a->data, buf, r+1)) return -1 ;
count++ ;
}
}
return (int)count ;
}
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