| /* Copyright (C) 2018 */ |
| |
| #include <openssl/opensslconf.h> |
| #if !defined(OPENSSL_SYS_STARBOARD) |
| #include <assert.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #else |
| #include "starboard/memory.h" |
| #endif // !defined(OPENSSL_SYS_STARBOARD) |
| |
| #include <openssl/mem.h> |
| |
| #include <string.h> |
| |
| #include <openssl/err.h> |
| |
| #if defined(OPENSSL_WINDOWS) |
| OPENSSL_MSVC_PRAGMA(warning(push, 3)) |
| #include <windows.h> |
| OPENSSL_MSVC_PRAGMA(warning(pop)) |
| #endif |
| |
| #include "internal.h" |
| |
| #define OPENSSL_MALLOC_PREFIX 8 |
| |
| void *OPENSSL_malloc(size_t size) { |
| void *ptr = malloc(size + OPENSSL_MALLOC_PREFIX); |
| if (ptr == NULL) { |
| return NULL; |
| } |
| |
| *(size_t *)ptr = size; |
| |
| return ((uint8_t *)ptr) + OPENSSL_MALLOC_PREFIX; |
| } |
| |
| void OPENSSL_free(void *orig_ptr) { |
| if (orig_ptr == NULL) { |
| return; |
| } |
| |
| void *ptr = ((uint8_t *)orig_ptr) - OPENSSL_MALLOC_PREFIX; |
| |
| size_t size = *(size_t *)ptr; |
| OPENSSL_cleanse(ptr, size + OPENSSL_MALLOC_PREFIX); |
| free(ptr); |
| } |
| |
| void *OPENSSL_realloc(void *orig_ptr, size_t new_size) { |
| if (orig_ptr == NULL) { |
| return OPENSSL_malloc(new_size); |
| } |
| |
| void *ptr = ((uint8_t *)orig_ptr) - OPENSSL_MALLOC_PREFIX; |
| size_t old_size = *(size_t *)ptr; |
| |
| void *ret = OPENSSL_malloc(new_size); |
| if (ret == NULL) { |
| return NULL; |
| } |
| |
| size_t to_copy = new_size; |
| if (old_size < to_copy) { |
| to_copy = old_size; |
| } |
| |
| memcpy(ret, orig_ptr, to_copy); |
| OPENSSL_free(orig_ptr); |
| |
| return ret; |
| } |
| |
| void OPENSSL_cleanse(void *ptr, size_t len) { |
| #if defined(OPENSSL_WINDOWS) |
| SecureZeroMemory(ptr, len); |
| #else |
| OPENSSL_memset(ptr, 0, len); |
| |
| #if !defined(OPENSSL_NO_ASM) |
| /* As best as we can tell, this is sufficient to break any optimisations that |
| might try to eliminate "superfluous" memsets. If there's an easy way to |
| detect memset_s, it would be better to use that. */ |
| __asm__ __volatile__("" : : "r"(ptr) : "memory"); |
| #endif |
| #endif // !OPENSSL_NO_ASM |
| } |
| |
| int CRYPTO_memcmp(const void *in_a, const void *in_b, size_t len) { |
| const uint8_t *a = in_a; |
| const uint8_t *b = in_b; |
| uint8_t x = 0; |
| |
| for (size_t i = 0; i < len; i++) { |
| x |= a[i] ^ b[i]; |
| } |
| |
| return x; |
| } |
| |
| uint32_t OPENSSL_hash32(const void *ptr, size_t len) { |
| // These are the FNV-1a parameters for 32 bits. |
| static const uint32_t kPrime = 16777619u; |
| static const uint32_t kOffsetBasis = 2166136261u; |
| |
| const uint8_t *in = ptr; |
| uint32_t h = kOffsetBasis; |
| |
| for (size_t i = 0; i < len; i++) { |
| h ^= in[i]; |
| h *= kPrime; |
| } |
| |
| return h; |
| } |
| |
| uint32_t OPENSSL_strhash(const char *s) { return OPENSSL_hash32(s, strlen(s)); } |
| |
| size_t OPENSSL_strnlen(const char *s, size_t len) { |
| for (size_t i = 0; i < len; i++) { |
| if (s[i] == 0) { |
| return i; |
| } |
| } |
| |
| return len; |
| } |
| |
| char *OPENSSL_strdup(const char *s) { |
| if (s == NULL) { |
| return NULL; |
| } |
| const size_t len = strlen(s) + 1; |
| char *ret = OPENSSL_malloc(len); |
| if (ret == NULL) { |
| return NULL; |
| } |
| OPENSSL_memcpy(ret, s, len); |
| return ret; |
| } |
| |
| int OPENSSL_tolower(int c) { |
| if (c >= 'A' && c <= 'Z') { |
| return c + ('a' - 'A'); |
| } |
| return c; |
| } |
| |
| int OPENSSL_strcasecmp(const char *a, const char *b) { |
| for (size_t i = 0;; i++) { |
| const int aa = OPENSSL_tolower(a[i]); |
| const int bb = OPENSSL_tolower(b[i]); |
| |
| if (aa < bb) { |
| return -1; |
| } else if (aa > bb) { |
| return 1; |
| } else if (aa == 0) { |
| return 0; |
| } |
| } |
| } |
| |
| int OPENSSL_strncasecmp(const char *a, const char *b, size_t n) { |
| for (size_t i = 0; i < n; i++) { |
| const int aa = OPENSSL_tolower(a[i]); |
| const int bb = OPENSSL_tolower(b[i]); |
| |
| if (aa < bb) { |
| return -1; |
| } else if (aa > bb) { |
| return 1; |
| } else if (aa == 0) { |
| return 0; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int BIO_snprintf(char *buf, size_t n, const char *format, ...) { |
| va_list args; |
| va_start(args, format); |
| int ret = BIO_vsnprintf(buf, n, format, args); |
| va_end(args); |
| return ret; |
| } |
| |
| int BIO_vsnprintf(char *buf, size_t n, const char *format, va_list args) { |
| #if SB_API_VERSION < 16 |
| return SbStringFormat(buf, n, format, args); |
| #else |
| return vsnprintf(buf, n, format, args); |
| #endif |
| } |
| |
| char *OPENSSL_strndup(const char *str, size_t size) { |
| char *ret; |
| size_t alloc_size; |
| |
| if (str == NULL) { |
| return NULL; |
| } |
| |
| size = OPENSSL_strnlen(str, size); |
| |
| alloc_size = size + 1; |
| if (alloc_size < size) { |
| // overflow |
| OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE); |
| return NULL; |
| } |
| ret = OPENSSL_malloc(alloc_size); |
| if (ret == NULL) { |
| OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE); |
| return NULL; |
| } |
| |
| OPENSSL_memcpy(ret, str, size); |
| ret[size] = '\0'; |
| return ret; |
| } |
| |
| size_t OPENSSL_strlcpy(char *dst, const char *src, size_t dst_size) { |
| size_t l = 0; |
| |
| for (; dst_size > 1 && *src; dst_size--) { |
| *dst++ = *src++; |
| l++; |
| } |
| |
| if (dst_size) { |
| *dst = 0; |
| } |
| |
| return l + strlen(src); |
| } |
| |
| size_t OPENSSL_strlcat(char *dst, const char *src, size_t dst_size) { |
| size_t l = 0; |
| for (; dst_size > 0 && *dst; dst_size--, dst++) { |
| l++; |
| } |
| return l + OPENSSL_strlcpy(dst, src, dst_size); |
| } |
| |
| void *OPENSSL_memdup(const void *data, size_t size) { |
| if (size == 0) { |
| return NULL; |
| } |
| |
| void *ret = OPENSSL_malloc(size); |
| if (ret == NULL) { |
| OPENSSL_PUT_ERROR(CRYPTO, ERR_R_MALLOC_FAILURE); |
| return NULL; |
| } |
| |
| OPENSSL_memcpy(ret, data, size); |
| return ret; |
| } |