1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
dnl -------------------------------------------------------------------------
dnl $Id$
dnl
dnl tls.m4
dnl
dnl ACE M4 include file which contains ACE specific M4 macros
dnl that determine availablility of SSL/TLS support.
dnl
dnl -------------------------------------------------------------------------
dnl Copyright (C) 2003 Ossama Othman
dnl
dnl All Rights Reserved
dnl
dnl This library is free software; you can redistribute it and/or
dnl modify it under the current ACE distribution terms.
dnl
dnl This library is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
dnl TLS/SSL library IO check
dnl Use this macro to determine if TLS/SSL support is available on the
dnl current host.
dnl Usage: ACE_CHECK_TLS
AC_DEFUN([ACE_CHECK_TLS],
[
AC_REQUIRE([AC_PROG_CXX])
AC_REQUIRE([AC_PROG_CXXCPP])
AC_LANG([C++])
AC_REQUIRE([AC_LANG])
dnl Save the current library and preprocessor flagslist. We do not
dnl want to add the SSL/TLS-specific ones to the general library link
dnl and preprocessor flags list since they should only be used when
dnl building the ACE_SSL library and/or binaries that use the ACE_SSL
dnl library.
ace_save_LIBS="$LIBS"
ace_save_CPPFLAGS="$CPPFLAGS"
ace_save_LDFLAGS="$LDFLAGS"
dnl ---------------------------------------------------------
ace_TLS_CPPFLAGS=""
ace_TLS_LDFLAGS=""
dnl Check if OpenSSL requires the Kerberos include directory to be
dnl added to the header search path.
AC_CACHE_CHECK([for Kerberos include flags needed by OpenSSL],
[ac_cv_kerberos_dir],
[
dnl Try compiling without any Kerberos-specific flags first.
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([
#include <openssl/ssl.h>
],
[
// ... THIS CODE DOES NOTHING! IT IS JUST USED FOR COMPILE TESTS ...
// ... Perform TCP connection ...
// ... Perform TLS/SSL stuff ...
CRYPTO_set_locking_callback (0);
SSLeay_add_ssl_algorithms ();
SSL_load_error_strings ();
SSL_METHOD * meth = TLSv1_method ();
SSL_CTX * ctx = SSL_CTX_new (meth);
SSL * ssl = SSL_new (ctx);
int fd = 2000; // Dummy file descriptor value.
SSL_set_fd (ssl, fd);
SSL_connect (ssl);
SSL_shutdown (ssl);
// ...
])
],
[
ac_cv_kerberos_dir=no
],
[
ace_kerberos_dir=""
for ace_kerberos in /usr /usr/local; do
ace_kerberos_dir="${ace_kerberos}/kerberos/include"
ace_TLS_CPPFLAGS="-I${ace_kerberos_dir}"
CPPFLAGS="$ace_TLS_CPPFLAGS $ace_save_CPPFLAGS"
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([
#include <openssl/ssl.h>
],
[
// ... THIS CODE DOES NOTHING! IT IS JUST USED FOR COMPILE TESTS ...
// ... Perform TCP connection ...
// ... Perform TLS/SSL stuff ...
CRYPTO_set_locking_callback (0);
SSLeay_add_ssl_algorithms ();
SSL_load_error_strings ();
SSL_METHOD * meth = TLSv1_method ();
SSL_CTX * ctx = SSL_CTX_new (meth);
SSL * ssl = SSL_new (ctx);
int fd = 2000; // Dummy file descriptor value.
SSL_set_fd (ssl, fd);
SSL_connect (ssl);
SSL_shutdown (ssl);
// ...
])
],
[
ac_cv_kerberos_dir="$ace_kerberos_dir"
break
],
[
ac_cv_kerberos_dir=no
])
done
])
])
AS_IF([test "$ac_cv_kerberos_dir" = no],
[
AC_SUBST([ACE_KERBEROS_INCLUDES],[.])
],
[
AC_SUBST([ACE_TLS_CPPFLAGS],[-I${ac_cv_kerberos_dir}])
AC_SUBST([ACE_KERBEROS_INCLUDES],[$ac_cv_kerberos_dir])
])
dnl ---------------------------------------------------------
dnl Add the TLS/SSL libraries to the library list.
ace_TLS_LIBS="-lssl -lcrypto"
LIBS="$ace_TLS_LIBS $LIBS"
LDFLAGS="$ACE_TLS_LDFLAGS $LDFLAGS"
AC_CACHE_CHECK([for OpenSSL libraries],
[ac_cv_openssl_libs],
[
AC_LINK_IFELSE([
AC_LANG_PROGRAM([
#include <openssl/ssl.h>
],
[
// ... THIS PROGRAM DOES NOTHING! IT IS JUST USED FOR LINK TESTS ...
// ... Perform TCP connection ...
// ... Perform TLS/SSL stuff ...
CRYPTO_set_locking_callback (0);
SSLeay_add_ssl_algorithms ();
SSL_load_error_strings ();
SSL_METHOD * meth = TLSv1_method ();
SSL_CTX * ctx = SSL_CTX_new (meth);
SSL * ssl = SSL_new (ctx);
int fd = 2000; // Dummy file descriptor value.
SSL_set_fd (ssl, fd);
SSL_connect (ssl);
SSL_shutdown (ssl);
// ...
])
],
[
ac_cv_openssl_libs=yes
],
[
ac_cv_openssl_libs=no
])
])
AS_IF([test $ac_cv_openssl_libs != no],
[AC_SUBST([ACE_TLS_LIBS],[$ace_TLS_LIBS])],
[])
dnl Restore the original library list and preprocessor flags.
LIBS="$ace_save_LIBS"
CPPFLAGS="$ace_save_CPPFLAGS"
LDFLAGS="$ace_save_LDFLAGS"
])
|
