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win: allow skipping the supported platform check #33176

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joaocgreis wants to merge 3 commits into from
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win: allow skipping the supported platform check #33176

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4ebe1fc
win: allow skipping the supported platform check
joaocgreis Apr 30, 2020
9e2c90f
fixup! win: allow skipping the supported platform check
joaocgreis May 21, 2020
77eb635
fixup! win: allow skipping the supported platform check
joaocgreis May 26, 2020
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9 changes: 9 additions & 0 deletions doc/api/cli.md
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Expand Up @@ -1336,6 +1336,15 @@ added:
Path to a Node.js module which will be loaded in place of the built-in REPL.
Overriding this value to an empty string (`''`) will use the built-in REPL.

### `NODE_SKIP_PLATFORM_CHECK=value`
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<!-- YAML
added: REPLACEME
-->

If `value` equals `'1'`, the check for a supported platform is skipped during
Node.js startup. Node.js might not execute correctly. Any issues encountered
on unsupported platforms will not be fixed.

### `NODE_TLS_REJECT_UNAUTHORIZED=value`

If `value` equals `'0'`, certificate validation is disabled for TLS connections.
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16 changes: 14 additions & 2 deletions src/node_main.cc
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Expand Up @@ -27,13 +27,25 @@
#include <VersionHelpers.h>
#include <WinError.h>

#define SKIP_CHECK_VAR "NODE_SKIP_PLATFORM_CHECK"
#define SKIP_CHECK_SIZE 1
#define SKIP_CHECK_VALUE "1"

int wmain(int argc, wchar_t* wargv[]) {
// Windows Server 2012 (not R2) is supported until 10/10/2023, so we allow it
// to run in the experimental support tier.
char buf[SKIP_CHECK_SIZE + 1];
if (!IsWindows8Point1OrGreater() &&
!(IsWindowsServer() && IsWindows8OrGreater())) {
!(IsWindowsServer() && IsWindows8OrGreater()) &&
(GetEnvironmentVariableA(SKIP_CHECK_VAR, buf, sizeof(buf)) !=
SKIP_CHECK_SIZE ||
strncmp(buf, SKIP_CHECK_VALUE, SKIP_CHECK_SIZE + 1) != 0)) {
fprintf(stderr, "This application is only supported on Windows 8.1, "
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@gireeshpunathil gireeshpunathil May 22, 2020

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Suggested change
fprintf(stderr, "This application is only supported on Windows 8.1, "
fprintf(stderr, "Node.js is only supported on Windows 8.1, "

Otherwise it brings a confusion to the user: which application? the one that runs on Node.js, Is it coming from a third party module, etc.

(I know this word not touched by this PR, but given that we are changing the behavior here, it makes sense to reduce confusion)

"Windows Server 2012 R2, or higher.");
"Windows Server 2012 R2, or\nhigher.\n"
"Setting the " SKIP_CHECK_VAR " environment variable "
"to 1 skips this\ncheck, but Node.js might not execute "
"correctly. Any issues encountered on\nunsupported "
"platforms will not be fixed.");
exit(ERROR_EXE_MACHINE_TYPE_MISMATCH);
}

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