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/* ISC license. */
#include <bearssl.h>
#include <s6-networking/sbearssl.h>
#define INSTANCE(c) ((sbearssl_x509_small_context *)(c))
static void start_chain (br_x509_class const **c, char const *server_name)
{
sbearssl_x509_small_context *ctx = INSTANCE(c) ;
ctx->minimal.vtable->start_chain(&ctx->minimal.vtable, server_name) ;
ctx->i = 0 ;
}
static void start_cert (br_x509_class const **c, uint32_t len)
{
sbearssl_x509_small_context *ctx = INSTANCE(c) ;
ctx->minimal.vtable->start_cert(&ctx->minimal.vtable, len) ;
if (!ctx->i) br_sha256_init(&ctx->hashctx) ;
}
static void append (br_x509_class const **c, unsigned char const *s, size_t len)
{
sbearssl_x509_small_context *ctx = INSTANCE(c) ;
ctx->minimal.vtable->append(&ctx->minimal.vtable, s, len) ;
if (!ctx->i) br_sha256_update(&ctx->hashctx, s, len) ;
}
static void end_cert (br_x509_class const **c)
{
sbearssl_x509_small_context *ctx = INSTANCE(c) ;
ctx->minimal.vtable->end_cert(&ctx->minimal.vtable) ;
if (!ctx->i) br_sha256_out(&ctx->hashctx, ctx->eehash) ;
ctx->i++ ;
}
static unsigned int end_chain (br_x509_class const **c)
{
sbearssl_x509_small_context *ctx = INSTANCE(c) ;
unsigned int r = ctx->minimal.vtable->end_chain(&ctx->minimal.vtable) ;
if (!r)
{
uint8_t mask = 1 ;
for (unsigned int i = 0 ; i < 6 ; i++, mask <<= 1)
if (ctx->elts[i].status)
*ctx->eltstatus |= ctx->elts[i].status < 0 ? 128 : mask ;
}
return r ;
}
static br_x509_pkey const *get_pkey(br_x509_class const *const *c, unsigned int *usages)
{
sbearssl_x509_small_context *ctx = INSTANCE(c) ;
return ctx->minimal.vtable->get_pkey(&ctx->minimal.vtable, usages) ;
}
br_x509_class const sbearssl_x509_small_vtable =
{
.context_size = sizeof(sbearssl_x509_small_context),
.start_chain = &start_chain,
.start_cert = &start_cert,
.append = &append,
.end_cert = &end_cert,
.end_chain = &end_chain,
.get_pkey = &get_pkey,
} ;
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