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Merge bitcoin/bitcoin#29786: Drop Windows Socket dependency for randomenv.cpp

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03b87a3e64 Drop Windows Socket dependency for `randomenv.cpp` (Hennadii Stepanov)

Pull request description:

  This change drops a dependency on the ws2_32 library for our libbitcoinkernel by switching to [`GetComputerName`](https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-getcomputernamew) function.

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    utACK 03b87a3e64.
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    Code review ACK 03b87a3e64.
  fanquake:
    ACK 03b87a3e64

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fanquake 2024-04-09 10:17:58 +02:00
commit 71f96c274f
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src/randomenv.cpp
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@ -13,6 +13,7 @@
#include <compat/compat.h>
#include <compat/cpuid.h>
#include <crypto/sha512.h>
#include <span.h>
#include <support/cleanse.h>
#include <util/time.h>
@ -357,10 +358,19 @@ void RandAddStaticEnv(CSHA512& hasher)
hasher << &hasher << &RandAddStaticEnv << &malloc << &errno << &environ;
// Hostname
#ifdef WIN32
constexpr DWORD max_size = MAX_COMPUTERNAME_LENGTH + 1;
char hname[max_size];
DWORD size = max_size;
if (GetComputerNameA(hname, &size) != 0) {
hasher.Write(UCharCast(hname), size);
}
#else
char hname[256];
if (gethostname(hname, 256) == 0) {
hasher.Write((const unsigned char*)hname, strnlen(hname, 256));
}
#endif
#if HAVE_DECL_GETIFADDRS && HAVE_DECL_FREEIFADDRS
// Network interfaces