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dnl $1 = Name of variable
dnl $2 = Name of function to check for
dnl $3 = Name of protocol
dnl $4 = Name of CPP macro to define
AC_DEFUN([TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER], [
dnl Determine if particular SSL version is enabled
if test "[$]$1" = "true" -o "[$]$1" = "force"; then
AC_CHECK_FUNC($2,, [
if test "[$]$1" = "force"; then
AC_MSG_ERROR([Unable to enable $3])
fi
$1='false'
])
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dnl $1 = Name of variable
dnl $2 = Name of function to check for
dnl $3 = Name of protocol
dnl $4 = Name of CPP macro to define
dnl $5 = Name of CPP macro to check for instead of a function
AC_DEFUN([TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER], [
dnl Determine if particular SSL version is enabled
if test "[$]$1" = "true" -o "[$]$1" = "force"; then
proto_check='true'
ifelse($5,, [
AC_CHECK_FUNC($2,, [
proto_check='false'
])
], [
AC_LANG_PUSH(C)
AC_MSG_CHECKING([for $3 protocol support])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <openssl/ssl.h>
#include <openssl/opensslv.h>
#if (SSLEAY_VERSION_NUMBER >= 0x0907000L)
# include <openssl/conf.h>
#endif
], [
int x = $5;
])], [
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
proto_check='false'
])
AC_LANG_POP([C])
])
if test "$proto_check" = 'false'; then
if test "[$]$1" = "force"; then
AC_MSG_ERROR([Unable to enable $3])
fi
$1='false'
fi
fi
if test "[$]$1" = "false"; then
AC_DEFINE($4, [1], [Define this to disable $3 in OpenSSL support])
fi
])
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AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
AC_MSG_ERROR([Unable to compile a basic program using OpenSSL])
])
AC_LANG_POP([C])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_ssl2], [SSLv2_method], [sslv2], [NO_SSL2])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_ssl3], [SSLv3_method], [sslv3], [NO_SSL3])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_0], [TLSv1_method], [tlsv1.0], [NO_TLS1])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_1], [TLSv1_1_method], [tlsv1.1], [NO_TLS1_1])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_2], [TLSv1_2_method], [tlsv1.2], [NO_TLS1_2])
dnl XXX:TODO: Note that OpenSSL 1.1.1 does not export this, still need to figure out how to
dnl talk only TLSv1.3
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_3], [TLSv1_3_method], [tlsv1.3], [NO_TLS1_3])
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AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
AC_MSG_ERROR([Unable to compile a basic program using OpenSSL])
])
AC_LANG_POP([C])
AC_CHECK_FUNCS([TLS_method])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_ssl2], [SSLv2_method], [sslv2], [NO_SSL2])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_ssl3], [SSLv3_method], [sslv3], [NO_SSL3])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_0], [TLSv1_method], [tlsv1.0], [NO_TLS1])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_1], [TLSv1_1_method], [tlsv1.1], [NO_TLS1_1])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_2], [TLSv1_2_method], [tlsv1.2], [NO_TLS1_2])
TCLTLS_SSL_OPENSSL_CHECK_PROTO_VER([tcltls_ssl_tls1_3], [], [tlsv1.3], [NO_TLS1_3], [SSL_OP_NO_TLSv1_3])
AC_CACHE_VAL([tcltls_cv_func_tlsext_hostname], [
AC_LANG_PUSH(C)
AC_MSG_CHECKING([for SSL_set_tlsext_host_name])
AC_LINK_IFELSE([AC_LANG_PROGRAM([
#include <openssl/ssl.h>
#if (SSLEAY_VERSION_NUMBER >= 0x0907000L)
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