19d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root/* 29d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * Copyright 2012 The Android Open Source Project 39d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * 49d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * Redistribution and use in source and binary forms, with or without 59d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * modification, are permitted provided that the following conditions 69d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * are met: 79d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * 1. Redistributions of source code must retain the above copyright 89d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * notice, this list of conditions and the following disclaimer. 99d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * 2. Redistributions in binary form must reproduce the above copyright 109d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * notice, this list of conditions and the following disclaimer in the 119d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * documentation and/or other materials provided with the distribution. 129d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * 139d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY 149d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 159d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 169d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY 179d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 189d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 199d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 209d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 219d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 229d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 239d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * 249d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root */ 259d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root 269d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root#include <openssl/engine.h> 279d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root 289d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root/** 299d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * Makes sure the ex_data for the keyhandle is initially set to NULL. 309d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root */ 319d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Rootint keyhandle_new(void*, void*, CRYPTO_EX_DATA* ad, int idx, long, void*) { 329d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root return CRYPTO_set_ex_data(ad, idx, NULL); 339d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root} 349d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root 359d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root/** 369d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * Frees a previously allocated keyhandle stored in ex_data. 379d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root */ 389d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Rootvoid keyhandle_free(void *, void *ptr, CRYPTO_EX_DATA*, int, long, void*) { 399d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root char* keyhandle = reinterpret_cast<char*>(ptr); 409d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root if (keyhandle != NULL) { 419d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root free(keyhandle); 429d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root } 439d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root} 449d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root 459d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root/** 469d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root * Duplicates a keyhandle stored in ex_data in case we copy a key. 479d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root */ 489d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Rootint keyhandle_dup(CRYPTO_EX_DATA* to, CRYPTO_EX_DATA*, void *ptrRef, int idx, long, void *) { 499d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root // This appears to be a bug in OpenSSL. 509d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root void** ptr = reinterpret_cast<void**>(ptrRef); 519d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root char* keyhandle = reinterpret_cast<char*>(*ptr); 529d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root if (keyhandle != NULL) { 539d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root char* keyhandle_copy = strdup(keyhandle); 549d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root *ptr = keyhandle_copy; 559d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root 569d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root // Call this in case OpenSSL is fixed in the future. 579d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root (void) CRYPTO_set_ex_data(to, idx, keyhandle_copy); 589d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root } 599d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root return 1; 609d422a535cb4170acf46ec9fcb26cd3f428a2dc7Kenny Root} 6196427baf0094d50047049d329b0779c3c910402cKenny Root 6296427baf0094d50047049d329b0779c3c910402cKenny Rootvoid *ex_data_dup(void *data) { 6396427baf0094d50047049d329b0779c3c910402cKenny Root char* keyhandle = reinterpret_cast<char*>(data); 6496427baf0094d50047049d329b0779c3c910402cKenny Root return strdup(keyhandle); 6596427baf0094d50047049d329b0779c3c910402cKenny Root} 6696427baf0094d50047049d329b0779c3c910402cKenny Root 6796427baf0094d50047049d329b0779c3c910402cKenny Rootvoid ex_data_free(void *data) { 6896427baf0094d50047049d329b0779c3c910402cKenny Root char* keyhandle = reinterpret_cast<char*>(data); 6996427baf0094d50047049d329b0779c3c910402cKenny Root free(keyhandle); 7096427baf0094d50047049d329b0779c3c910402cKenny Root} 7196427baf0094d50047049d329b0779c3c910402cKenny Root 7296427baf0094d50047049d329b0779c3c910402cKenny Rootvoid ex_data_clear_free(void *data) { 7396427baf0094d50047049d329b0779c3c910402cKenny Root char* keyhandle = reinterpret_cast<char*>(data); 7496427baf0094d50047049d329b0779c3c910402cKenny Root memset(data, '\0', strlen(keyhandle)); 7596427baf0094d50047049d329b0779c3c910402cKenny Root free(keyhandle); 7696427baf0094d50047049d329b0779c3c910402cKenny Root} 77