/* * uuid.c * ------ * UUID support for keystore database. * * Copyright (c) 2016, NORDUnet A/S All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of the NORDUnet nor the names of its contributors may * be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include "hal.h" #include "hal_internal.h" hal_error_t hal_uuid_gen(hal_uuid_t *uuid) { hal_error_t err; if (uuid == NULL) return HAL_ERROR_BAD_ARGUMENTS; /* * Generate a version 4 UUID as specified in RFC 4122. * This is basically a 122-bit random number. */ if ((err = hal_rpc_get_random(uuid->uuid, sizeof(uuid->uuid))) != HAL_OK) return err; /* * Set high order bits of clock_seq_hi_and_reserved and * time_hi_and_version fields to magic values as specified by RFC * 4122 section 4.4. * * Not recommended reading if you've eaten recently. */ uuid->uuid[6] &= 0x0f; uuid->uuid[6] |= 0x40; uuid->uuid[8] &= 0x3f; uuid->uuid[8] |= 0x80; return HAL_OK; } hal_error_t hal_uuid_parse(hal_uuid_t *uuid, const char * const string) { static const char fmt[] = "%2hhx%2hhx%2hhx%2hhx-%2hhx%2hhx-%2hhx%2hhx-%2hhx%2hhx-%2hhx%2hhx%2hhx%2hhx%2hhx%2hhx"; if (uuid == NULL || string == NULL || sscanf(string, fmt, uuid->uuid + 0, uuid->uuid + 1, uuid->uuid + 2, uuid->uuid + 3, uuid->uuid + 4, uuid->uuid + 5, uuid->uuid + 6, uuid->uuid + 7, uuid->uuid + 8, uuid->uuid + 9, uuid->uuid + 10, uuid->uuid + 11, uuid->uuid + 12, uuid->uuid + 13, uuid->uuid + 14, uuid->uuid + 15) != 16) return HAL_ERROR_BAD_ARGUMENTS; return HAL_OK; } hal_error_t hal_uuid_format(const hal_uuid_t * const uuid, char *buffer, const size_t buffer_len) { static const char fmt[] = "%02hhx%02hhx%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx"; if (uuid == NULL || buffer == NULL || buffer_len < HAL_UUID_TEXT_SIZE) return HAL_ERROR_BAD_ARGUMENTS; if (snprintf(buffer, buffer_len, fmt, uuid->uuid[ 0], uuid->uuid[ 1], uuid->uuid[ 2], uuid->uuid[ 3], uuid->uuid[ 4], uuid->uuid[ 5], uuid->uuid[ 6], uuid->uuid[ 7], uuid->uuid[ 8], uuid->uuid[ 9], uuid->uuid[10], uuid->uuid[11], uuid->uuid[12], uuid->uuid[13], uuid->uuid[14], uuid->uuid[15]) != HAL_UUID_TEXT_SIZE - 1) return HAL_ERROR_RESULT_TOO_LONG; return HAL_OK; } /* * Local variables: * indent-tabs-mode: nil * End: */ psgd.org> 2016-07-05 22:45:35 -0400 Attempt to add resource management, for multiple cores of the same type.' href='/sw/libhal/commit/mkmif.c?h=auto_zeroise&id=30f8e4e85b6a337291b09d55d8edc15e422b6341'>30f8e4e

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