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From aeec0e2cda5c440fdd3c5bea20ed7567bea540e1 Mon Sep 17 00:00:00 2001
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From: Quentin Armitage <quentin@armitage.org.uk>
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Date: Tue, 12 Mar 2019 14:58:38 +0000
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Subject: [PATCH 1/3] Fix OpenSSL init failure with OpenSSL v1.1.1
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OpenSSL v1.1.1, but not v1.1.0h or v1.1.1b failed in SSL_CTX_new()
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if OPENSSL_init_crypto(OPENSSL_INIT_NO_LOAD_CONFIG) had previously
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been called.
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This commit doesn't call OPENSSL_init_crypto() if doing so causes
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SSL_CTX_new() to fail.
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Signed-off-by: Quentin Armitage <quentin@armitage.org.uk>
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configure.ac | 30 ++++++++++++++++++++++++++++++
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keepalived/check/check_ssl.c | 6 ++++++
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2 files changed, 36 insertions(+)
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diff
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index 89399ca3..504b9b92 100644
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@@ -819,6 +819,36 @@ AC_CHECK_FUNCS([SSL_set0_rbio OPENSSL_init_crypto])
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# TLS_method() introduced OpenSSL v1.1.0
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AC_CHECK_FUNCS([TLS_method])
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+
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+# OPENSSL_INIT_NO_LOAD_CONFIG. It does not fail in v1.1.0h and v1.1.1b.
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+AS_IF([test .$ac_cv_func_OPENSSL_init_crypto = .yes -a .$ac_cv_func_TLS_method = .yes],
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+ [
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+ AC_RUN_IFELSE(
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+ [AC_LANG_PROGRAM(
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+ [[#include <openssl/ssl.h>]],
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+ [[
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+ const SSL_METHOD *meth;
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+ SSL_CTX *ctx;
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+
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+ if (!OPENSSL_init_crypto(OPENSSL_INIT_NO_LOAD_CONFIG, NULL))
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+ return 1;
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+
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+ /* Initialize SSL context */
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+ meth = TLS_method();
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+ if (!(ctx = SSL_CTX_new(meth)))
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+ return 1;
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+ return 0;
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+ ]])],
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+ [openssl_init_no_load_bug=0],
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+ [openssl_init_no_load_bug=1],
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+ [
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+ AC_MSG_WARN([Cannot determine if need to OPENSSL_init_crypto() problem. Assuming yes for safety.])
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+ openssl_init_no_load_bug=1
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+ ]
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+ )
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+ AS_IF([test $openssl_init_no_load_bug -eq 1],
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+ [AC_DEFINE([HAVE_OPENSSL_INIT_NO_LOAD_CONFIG_BUG], [ 1 ], [Define to 1 if OPENSSL_init_crypto(OPENSSL_INIT_NO_LOAD_CONFIG) bug)])])
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+ ])
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unset LIBS
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if test $BUILD_GENHASH = No; then
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diff
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index 6bf6a005..2743ea87 100644
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@@ -69,8 +69,14 @@ build_ssl_ctx(void)
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#if HAVE_OPENSSL_INIT_CRYPTO
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+#ifndef HAVE_OPENSSL_INIT_NO_LOAD_CONFIG_BUG
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+ /* In OpenSSL v1.1.1 if the following is called, SSL_CTX_new() below fails.
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+ * It works in v1.1.0h and v1.1.1b.
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+ * It transpires that it works without setting NO_LOAD_CONFIG, but it is
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+ * presumably more efficient not to load it. */
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if (!OPENSSL_init_crypto(OPENSSL_INIT_NO_LOAD_CONFIG, NULL))
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log_message(LOG_INFO, "OPENSSL_init_crypto failed");
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+#endif
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#else
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SSL_library_init();
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SSL_load_error_strings();
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--
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2.20.1
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