kevin/libsodium
1
Fork 0
mirror of https://github.com/jedisct1/libsodium.git synced 2024-12-19 10:05:05 -07:00
Code Releases Wiki Activity

randombytes: make the emscripten version consistent with others

Browse Source
This commit is contained in:
Frank Denis 2019-09-24 16:56:49 +02:00
parent 87fac028be
commit 2f915846ff
1 changed files with 67 additions and 51 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

118
src/libsodium/randombytes/randombytes.c
View File

@ -30,60 +30,28 @@ static const randombytes_implementation *implementation;
# ifdef __EMSCRIPTEN__
# define RANDOMBYTES_DEFAULT_IMPLEMENTATION NULL
# else
# define RANDOMBYTES_DEFAULT_IMPLEMENTATION &randombytes_sysrandom_implementation;
# define RANDOMBYTES_DEFAULT_IMPLEMENTATION &randombytes_sysrandom_implementation
# endif
#endif
static void
randombytes_init_if_needed(void)
#ifdef __EMSCRIPTEN__
static const char *
javascript_implementation_name(void)
{
if (implementation == NULL) {
implementation = RANDOMBYTES_DEFAULT_IMPLEMENTATION;
randombytes_stir();
}
}
int
randombytes_set_implementation(randombytes_implementation *impl)
{
implementation = impl;
return 0;
}
const char *
randombytes_implementation_name(void)
{
#ifndef __EMSCRIPTEN__
randombytes_init_if_needed();
return implementation->implementation_name();
#else
return "js";
#endif
}
uint32_t
randombytes_random(void)
static uint32_t
javascript_random(void)
{
#ifndef __EMSCRIPTEN__
randombytes_init_if_needed();
return implementation->random();
#else
return EM_ASM_INT_V({
return Module.getRandomValue();
});
#endif
}
void
randombytes_stir(void)
static void
javascript_stir(void)
{
#ifndef __EMSCRIPTEN__
randombytes_init_if_needed();
if (implementation->stir != NULL) {
implementation->stir();
}
#else
EM_ASM({
if (Module.getRandomValue === undefined) {
try {
@ -111,7 +79,66 @@ randombytes_stir(void)
}
}
});
}
static void
javascript_buf(void * const buf, const size_t size)
{
unsigned char *p = (unsigned char *) buf;
size_t i;
for (i = (size_t) 0U; i < size; i++) {
p[i] = (unsigned char) randombytes_random();
}
}
#endif
static void
randombytes_init_if_needed(void)
{
if (implementation == NULL) {
#ifdef __EMSCRIPTEN__
static randombytes_implementation javascript_implementation;
javascript_implementation.implementation_name = javascript_implementation_name;
javascript_implementation.random = javascript_random;
javascript_implementation.stir = javascript_stir;
javascript_implementation.buf = javascript_buf;
implementation = &javascript_implementation;
#else
implementation = RANDOMBYTES_DEFAULT_IMPLEMENTATION;
#endif
randombytes_stir();
}
}
int
randombytes_set_implementation(randombytes_implementation *impl)
{
implementation = impl;
return 0;
}
const char *
randombytes_implementation_name(void)
{
randombytes_init_if_needed();
return implementation->implementation_name();
}
uint32_t
randombytes_random(void)
{
randombytes_init_if_needed();
return implementation->random();
}
void
randombytes_stir(void)
{
randombytes_init_if_needed();
if (implementation->stir != NULL) {
implementation->stir();
}
}
uint32_t
@ -120,12 +147,10 @@ randombytes_uniform(const uint32_t upper_bound)
uint32_t min;
uint32_t r;
#ifndef __EMSCRIPTEN__
randombytes_init_if_needed();
if (implementation->uniform != NULL) {
return implementation->uniform(upper_bound);
}
#endif
if (upper_bound < 2) {
return 0;
}
@ -142,19 +167,10 @@ randombytes_uniform(const uint32_t upper_bound)
void
randombytes_buf(void * const buf, const size_t size)
{
#ifndef __EMSCRIPTEN__
randombytes_init_if_needed();
if (size > (size_t) 0U) {
implementation->buf(buf, size);
}
#else
unsigned char *p = (unsigned char *) buf;
size_t i;
for (i = (size_t) 0U; i < size; i++) {
p[i] = (unsigned char) randombytes_random();
}
#endif
}
void