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/* ISC license. */
#include <string.h>
#include <errno.h>
#include <bearssl.h>
#include <skalibs/buffer.h>
#include <skalibs/stralloc.h>
#include <skalibs/genalloc.h>
#include <skalibs/djbunix.h>
#include <s6-networking/sbearssl.h>
int sbearssl_cert_readbigpem (char const *fn, genalloc *certs, stralloc *sa)
{
char buf[BUFFER_INSIZE] ;
int fd = open_readb(fn) ;
buffer b = BUFFER_INIT(&buffer_read, fd, buf, BUFFER_INSIZE) ;
genalloc pems = GENALLOC_ZERO ;
sbearssl_pemobject *p ;
size_t certsbase = genalloc_len(sbearssl_cert, certs) ;
size_t sabase = sa->len ;
size_t n ;
size_t i = 0 ;
int certswasnull = !genalloc_s(sbearssl_cert, certs) ;
int sawasnull = !sa->s ;
int r ;
if (fd < 0) return -1 ;
r = sbearssl_pem_decode_from_buffer(&b, &pems, sa) ;
fd_close(fd) ;
if (r) return r ;
p = genalloc_s(sbearssl_pemobject, &pems) ;
n = genalloc_len(sbearssl_pemobject, &pems) ;
for (; i < n ; i++)
{
char const *name = sa->s + p[i].name ;
if (!strcmp(name, "CERTIFICATE")
|| !strcmp(name, "X509 CERTIFICATE"))
{
sbearssl_cert sc = { .data = p[i].data, .datalen = p[i].datalen } ;
if (!genalloc_append(sbearssl_cert, certs, &sc)) goto fail ;
}
}
genalloc_free(sbearssl_pemobject, &pems) ;
return 0 ;
fail:
if (certswasnull) genalloc_free(sbearssl_cert, certs) ;
else genalloc_setlen(sbearssl_cert, certs, certsbase) ;
if (sawasnull) stralloc_free(sa) ;
else sa->len = sabase ;
genalloc_free(sbearssl_pemobject, &pems) ;
return r ;
}
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