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/* ISC license. */
#include <errno.h>
#include <skalibs/uint32.h>
#include <skalibs/stralloc.h>
#include <tipidee/fcgi.h>
static int encode (stralloc *sa, size_t n)
{
if (n <= 0x7f)
{
char c = n ;
return stralloc_catb(sa, &c, 1) ;
}
else if (n < 0x7ffffffful)
{
char pack[4] ;
uint32_pack_big(pack, n | 0x80000000) ;
return stralloc_catb(sa, pack, 4) ;
}
else return (errno = EOVERFLOW, 0) ;
}
int tipidee_fcgi_addenvb (stralloc *sa, char const *key, size_t keylen, char const *val, size_t vallen)
{
size_t start = sa->len ;
if (!encode(sa, keylen)) return 0 ;
if (!encode(sa, vallen)
|| !stralloc_catb(sa, key, keylen)
|| !stralloc_catb(sa, val, vallen)) goto err ;
if (sa->len > 0x7fff) goto err0 ;
return 1 ;
err0:
errno = E2BIG ;
err:
sa->len = start ;
return 0 ;
}
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