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/* ISC license. */
#include <stdint.h>
#include <grp.h>
#include <errno.h>
#include <skalibs/types.h>
#include <skalibs/stralloc.h>
#include <skalibs/genalloc.h>
#include <skalibs/skamisc.h>
#include <skalibs/avltree.h>
#include "s6ps.h"
#include "s6ps-internal.h"
int s6ps_grcache_lookup (s6ps_cache_t *cache, stralloc *sa, gid_t gid)
{
dius_t d = { .left = (uint32_t)gid, .right = satmp.len } ;
uint32_t i ;
if (!avltree_search(&cache->tree, &d.left, &i))
{
struct group *gr ;
size_t n = genalloc_len(dius_t, &cache->index) ;
errno = 0 ;
gr = getgrgid(gid) ;
if (!gr)
{
if (errno) return 0 ;
if (!stralloc_readyplus(&satmp, UINT_FMT + 2)) return 0 ;
stralloc_catb(&satmp, "(", 1) ;
satmp.len += uint_fmt(satmp.s + satmp.len, gid) ;
stralloc_catb(&satmp, ")", 2) ;
}
else if (!stralloc_cats(&satmp, gr->gr_name) || !stralloc_0(&satmp)) return 0 ;
if (!genalloc_append(dius_t, &cache->index, &d)) goto err ;
if (!avltree_insert(&cache->tree, n))
{
genalloc_setlen(dius_t, &cache->index, n) ;
goto err ;
}
i = n ;
}
return stralloc_cats(sa, satmp.s + genalloc_s(dius_t, &cache->index)[i].right) ;
err:
satmp.len = d.right ;
return 0 ;
}
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