1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <shared/nano_string.h> 18 19 #ifndef INTERNAL_TESTING 20 21 #include <shared/send_message.h> 22 #define REPORT_INTERNAL_ERROR(msg) \ 23 sendInternalFailureToHost(msg) 24 25 #else 26 27 #include <gtest/gtest.h> 28 #define REPORT_INTERNAL_ERROR(msg) FAIL() << msg 29 30 #endif 31 32 33 namespace nanoapp_testing { 34 35 void memset(void *mem, int val, size_t count) { 36 uint8_t *bytes = static_cast<uint8_t*>(mem); 37 for (size_t i = 0; i < count; i++) { 38 bytes[i] = static_cast<uint8_t>(val); 39 } 40 } 41 42 void memcpy(void *d, const void *s, size_t bytes) { 43 uint8_t *dst = static_cast<uint8_t*>(d); 44 const uint8_t *src = static_cast<const uint8_t*>(s); 45 for (size_t i = 0; i < bytes; i++) { 46 dst[i] = src[i]; 47 } 48 } 49 50 size_t strlen(char const *str) { 51 size_t ret = 0; 52 for (; str[ret] != '\0'; ret++) {} 53 return ret; 54 } 55 56 char *strncpy(char *dest, const char *src, size_t len) { 57 size_t i; 58 for (i = 0; (i < len) && (src[i] != '\0'); i++) { 59 dest[i] = src[i]; 60 } 61 for (; i < len; i++) { 62 dest[i] = '\0'; 63 } 64 return dest; 65 } 66 67 void uint32ToHexAscii(char *buffer, size_t buffer_len, uint32_t value) { 68 constexpr char lookup[16] = { 69 '0', '1', '2', '3', '4', '5', '6', '7', 70 '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; 71 if (buffer_len < kUint32ToHexAsciiBufferMinLen) { 72 // We chose not to send our buffer_len here, as that would invoke 73 // another call to this method and risk infinite recursion if something 74 // was really screwed up. 75 REPORT_INTERNAL_ERROR("uint32ToHexAscii got undersized buffer_len"); 76 return; 77 } 78 buffer[0] = '0'; 79 buffer[1] = 'x'; 80 for (size_t i = 0, shift = 28; i < 8; i++, shift -= 4) { 81 buffer[2 + i] = lookup[(value >> shift) & 0xF]; 82 } 83 } 84 85 } // namespace nanoapp_testing 86
