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/* ISC license. */
#include <errno.h>
#include <skalibs/allreadwrite.h>
#include <skalibs/uint.h>
#include <skalibs/bytestr.h>
#include <skalibs/buffer.h>
#include <skalibs/cbuffer.h>
#include <skalibs/error.h>
#include <skalibs/stralloc.h>
#include <skalibs/netstring.h>
int netstring_okeof (buffer *b, unsigned int w)
{
return (errno == EPIPE) && !w && buffer_isempty(b) ? (errno = 0, 1) : 0 ;
}
int netstring_get (buffer *b, stralloc *sa, unsigned int *state)
{
if (!*state)
{
unsigned int n ;
unsigned int len ;
char buf[UINT_FMT] ;
if (b->c.a < UINT_FMT+1) return (errno = EINVAL, -1) ;
for (;;)
{
register int r ;
len = buffer_getnofill(b, buf, UINT_FMT) ;
n = byte_chr(buf, len, ':') ; /* XXX: accepts :, as a valid netstring */
if (n >= UINT_FMT)
{
buffer_unget(b, len) ;
return (errno = EPROTO, -1) ;
}
if (n < len) break ;
buffer_unget(b, len) ;
r = sanitize_read(buffer_fill(b)) ;
if (r <= 0) return r ;
}
buffer_unget(b, len - n - 1) ;
if (!n || n != uint_scan(buf, &len)) return (errno = EPROTO, -1) ;
if (!stralloc_readyplus(sa, len + 1)) return -1 ;
*state = len + 1 ;
}
{
unsigned int w = 0 ;
register int r = buffer_getall(b, sa->s + sa->len, *state, &w) ;
sa->len += w ;
*state -= w ;
if (r <= 0) return r ;
}
return (sa->s[--sa->len] == ',') ? 1 : (errno = EPROTO, -1) ;
}
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