diff options
Diffstat (limited to 'crypto/encode_decode/decoder_lib.c')
| -rw-r--r-- | crypto/encode_decode/decoder_lib.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/crypto/encode_decode/decoder_lib.c b/crypto/encode_decode/decoder_lib.c index ffcf3cde1155..dedfb24e569e 100644 --- a/crypto/encode_decode/decoder_lib.c +++ b/crypto/encode_decode/decoder_lib.c @@ -537,6 +537,14 @@ static void collect_extra_decoder(OSSL_DECODER *decoder, void *arg) } } +static int decoder_sk_cmp(const OSSL_DECODER_INSTANCE *const *a, + const OSSL_DECODER_INSTANCE *const *b) +{ + if ((*a)->score == (*b)->score) + return (*a)->order - (*b)->order; + return (*a)->score - (*b)->score; +} + int OSSL_DECODER_CTX_add_extra(OSSL_DECODER_CTX *ctx, OSSL_LIB_CTX *libctx, const char *propq) { @@ -595,6 +603,26 @@ int OSSL_DECODER_CTX_add_extra(OSSL_DECODER_CTX *ctx, OSSL_DECODER_do_all_provided(libctx, collect_all_decoders, skdecoders); numdecoders = sk_OSSL_DECODER_num(skdecoders); + /* + * If there are provided or default properties, sort the initial decoder list + * by property matching score so that the highest scored provider is selected + * first. + */ + if (propq != NULL || ossl_ctx_global_properties(libctx, 0) != NULL) { + int num_decoder_insts = sk_OSSL_DECODER_INSTANCE_num(ctx->decoder_insts); + int i; + OSSL_DECODER_INSTANCE *di; + sk_OSSL_DECODER_INSTANCE_compfunc old_cmp = + sk_OSSL_DECODER_INSTANCE_set_cmp_func(ctx->decoder_insts, decoder_sk_cmp); + + for (i = 0; i < num_decoder_insts; i++) { + di = sk_OSSL_DECODER_INSTANCE_value(ctx->decoder_insts, i); + di->order = i; + } + sk_OSSL_DECODER_INSTANCE_sort(ctx->decoder_insts); + sk_OSSL_DECODER_INSTANCE_set_cmp_func(ctx->decoder_insts, old_cmp); + } + memset(&data, 0, sizeof(data)); data.ctx = ctx; data.w_prev_start = 0; |