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Second attempt to silence SSL compile failures on hamerkop.

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After further investigation, it seems the cause of the problem
is our recent decision to start defining WIN32_LEAN_AND_MEAN.
That causes <windows.h> to no longer include <wincrypt.h>, which
means that the OpenSSL headers are unable to prevent conflicts
with that header by #undef'ing the conflicting macros.  Apparently,
some other system header that be-secure-openssl.c #includes after
the OpenSSL headers is pulling in <wincrypt.h>.  It's obscure just
where that happens and why we're not seeing it on other Windows
buildfarm animals.  However, it should work to move the OpenSSL
#includes to the end of the list.  For the sake of future-proofing,
do likewise in fe-secure-openssl.c.  In passing, remove useless
double inclusions of <openssl/ssl.h>.

Thanks to Thomas Munro for running down the relevant information.

Discussion: https://postgr.es/m/1051867.1635720347@sss.pgh.pa.us
This commit is contained in:
Tom Lane 2021-11-06 12:43:18 -04:00
parent 05e6e78c18
commit 1241fcbd7e
2 changed files with 23 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
src/backend/libpq/be-secure-openssl.c
View File

@ -29,15 +29,6 @@
#include <arpa/inet.h>
#endif
#include <openssl/ssl.h>
#include <openssl/conf.h>
#include <openssl/dh.h>
#ifndef OPENSSL_NO_ECDH
#include <openssl/ec.h>
#endif
#include <openssl/x509v3.h>
#include "common/openssl.h"
#include "libpq/libpq.h"
#include "miscadmin.h"
#include "pgstat.h"
@ -46,6 +37,21 @@
#include "tcop/tcopprot.h"
#include "utils/memutils.h"
/*
* These SSL-related #includes must come after all system-provided headers.
* This ensures that OpenSSL can take care of conflicts with Windows'
* <wincrypt.h> by #undef'ing the conflicting macros. (We don't directly
* include <wincrypt.h>, but some other Windows headers do.)
*/
#include "common/openssl.h"
#include <openssl/conf.h>
#include <openssl/dh.h>
#ifndef OPENSSL_NO_ECDH
#include <openssl/ec.h>
#endif
#include <openssl/x509v3.h>
/* default init hook can be overridden by a shared library */
static void default_openssl_tls_init(SSL_CTX *context, bool isServerStart);
openssl_tls_init_hook_typ openssl_tls_init_hook = default_openssl_tls_init;

10
src/interfaces/libpq/fe-secure-openssl.c
View File

@ -30,7 +30,6 @@
#include "fe-auth.h"
#include "fe-secure-common.h"
#include "libpq-int.h"
#include "common/openssl.h"
#ifdef WIN32
#include "win32.h"
@ -55,13 +54,20 @@
#endif
#endif
#include <openssl/ssl.h>
/*
* These SSL-related #includes must come after all system-provided headers.
* This ensures that OpenSSL can take care of conflicts with Windows'
* <wincrypt.h> by #undef'ing the conflicting macros. (We don't directly
* include <wincrypt.h>, but some other Windows headers do.)
*/
#include "common/openssl.h"
#include <openssl/conf.h>
#ifdef USE_SSL_ENGINE
#include <openssl/engine.h>
#endif
#include <openssl/x509v3.h>
static int verify_cb(int ok, X509_STORE_CTX *ctx);
static int openssl_verify_peer_name_matches_certificate_name(PGconn *conn,
ASN1_STRING *name,