blob: 6a884e4d73b07afe0b706e87b027a83145dcbaec [file] [log] [blame]
/* 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>
#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 = SbMemoryAllocate(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);
SbMemoryDeallocate(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;
}
const void *OPENSSL_memchr(const void *s, int c, size_t n) {
if (n == 0) {
return NULL;
}
return memchr(s, c, n);
}
int OPENSSL_memcmp(const void *s1, const void *s2, size_t n) {
if (n == 0) {
return 0;
}
return memcmp(s1, s2, n);
}
void *OPENSSL_memcpy(void *dst, const void *src, size_t n) {
if (n == 0) {
return dst;
}
return memcpy(dst, src, n);
}
void *OPENSSL_memmove(void *dst, const void *src, size_t n) {
if (n == 0) {
return dst;
}
return memmove(dst, src, n);
}
void *OPENSSL_memset(void *dst, int c, size_t n) {
if (n == 0) {
return dst;
}
return memset(dst, c, n);
}
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;
}
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) {
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) {
return SbStringFormat(buf, n, format, args);
}