diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/crypto/c_src/hash.c | 38 |
1 files changed, 25 insertions, 13 deletions
diff --git a/lib/crypto/c_src/hash.c b/lib/crypto/c_src/hash.c index a2c53bcaaf..482a3e1a12 100644 --- a/lib/crypto/c_src/hash.c +++ b/lib/crypto/c_src/hash.c @@ -134,26 +134,38 @@ ERL_NIF_TERM hash_init_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) ERL_NIF_TERM hash_update_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]) {/* (Context, Data) */ - struct evp_md_ctx *ctx, *new_ctx; + struct evp_md_ctx *ctx, *new_ctx = NULL; ErlNifBinary data; ERL_NIF_TERM ret; - if (!enif_get_resource(env, argv[0], evp_md_ctx_rtype, (void**)&ctx) || - !enif_inspect_iolist_as_binary(env, argv[1], &data)) { - return enif_make_badarg(env); - } + if (argc != 2) + goto bad_arg; + if (!enif_get_resource(env, argv[0], evp_md_ctx_rtype, (void**)&ctx)) + goto bad_arg; + if (!enif_inspect_iolist_as_binary(env, argv[1], &data)) + goto bad_arg; - new_ctx = enif_alloc_resource(evp_md_ctx_rtype, sizeof(struct evp_md_ctx)); - new_ctx->ctx = EVP_MD_CTX_new(); - if (!EVP_MD_CTX_copy(new_ctx->ctx, ctx->ctx) || - !EVP_DigestUpdate(new_ctx->ctx, data.data, data.size)) { - enif_release_resource(new_ctx); - return atom_notsup; - } + if ((new_ctx = enif_alloc_resource(evp_md_ctx_rtype, sizeof(struct evp_md_ctx))) == NULL) + goto err; + if ((new_ctx->ctx = EVP_MD_CTX_new()) == NULL) + goto err; + if (EVP_MD_CTX_copy(new_ctx->ctx, ctx->ctx) != 1) + goto err; + if (EVP_DigestUpdate(new_ctx->ctx, data.data, data.size) != 1) + goto err; ret = enif_make_resource(env, new_ctx); - enif_release_resource(new_ctx); CONSUME_REDS(env, data); + goto done; + + bad_arg: + return enif_make_badarg(env); + + err: + ret = atom_notsup; + + done: + enif_release_resource(new_ctx); return ret; } |