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[BETA] GNU/Linux support

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wuggy 2026-04-16 16:14:49 -04:00
commit 4898f49c28
5 changed files with 117 additions and 4 deletions
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33
xpcom/base/nsUUIDGenerator.cpp
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@ -125,6 +125,31 @@ nsUUIDGenerator::GenerateUUIDInPlace(nsID* aId)
setstate(mState);
#endif
#if defined(__linux__)
// Linux does not provide arc4random_buf or arc4random.
// Use /dev/urandom for secure UUID generation.
int fd = open("/dev/urandom", O_RDONLY);
if (fd >= 0) {
ssize_t n = read(fd, aId, sizeof(nsID));
close(fd);
if (n == sizeof(nsID)) {
return NS_OK;
}
}
// Fallback if /dev/urandom fails
size_t bytesLeft = sizeof(nsID);
while (bytesLeft > 0) {
long rval = random();
const size_t mRBytes = 4;
size_t toCopy = std::min(bytesLeft, mRBytes);
memcpy(reinterpret_cast<char*>(aId) + (sizeof(nsID) - bytesLeft),
&rval, toCopy);
bytesLeft -= toCopy;
}
#else
#ifdef HAVE_ARC4RANDOM_BUF
arc4random_buf(aId, sizeof(nsID));
#else /* HAVE_ARC4RANDOM_BUF */
@ -135,8 +160,14 @@ nsUUIDGenerator::GenerateUUIDInPlace(nsID* aId)
const size_t mRBytes = 4;
#else
long rval = random();
const size_t mRBytes = 4;
#endif
size_t toCopy = std::min(bytesLeft, mRBytes);
memcpy(reinterpret_cast<char*>(aId) + (sizeof(nsID) - bytesLeft),
&rval, toCopy);
bytesLeft -= toCopy;
}
#endif /* HAVE_ARC4RANDOM_BUF */
uint8_t* src = (uint8_t*)&rval;
// We want to grab the mRBytes least significant bytes of rval, since