diff options
| -rw-r--r-- | midtrans.c | 23 |
1 files changed, 17 insertions, 6 deletions
@@ -332,13 +332,24 @@ enum midtrans_transaction_status midtrans_notification_transaction(char *post, BIO_set_md(mdtmp, EVP_sha512()); bio = BIO_push(mdtmp, bio); BIO_write(bio, signature_fields, signature_fields_len); - BIO_flush(bio); - char *pp; - long hash_len = BIO_get_mem_data(bio, &pp) - 1; - char hash[hash_len + 1]; - strncpy(hash, pp, hash_len); - hash[hash_len] = '\0'; + size_t signature_key_len = strlen(signature_key); + unsigned char mdbuf[EVP_MAX_MD_SIZE]; + int mdlen; + mdtmp = bio; + do { + EVP_MD *md; + mdtmp = BIO_find_type(mdtmp, BIO_TYPE_MD); + if (!mdtmp) + break; + BIO_get_md(mdtmp, &md); + mdlen = BIO_gets(mdtmp, (char *)mdbuf, EVP_MAX_MD_SIZE); + mdtmp = BIO_next(mdtmp); + } while (mdtmp); BIO_free_all(bio); + char hash[mdlen * 2 + 1]; + hash[0] = '\0'; + for (size_t i = 0; i < mdlen; i++) + sprintf(hash, "%s%02x", hash, mdbuf[i]); if (strcmp(signature_key, hash)) return MIDTRANS_TRANSACTION_SIGNATUREKEYDOESNOTMATCH; |