From: Dr. Stephen Henson <steve@openssl.org>
Date: Fri, 1 Apr 2011 14:49:30 +0000 (+0000)
Subject: Provisional support for auto called OPENSSL_init() function. This can be
X-Git-Tag: OpenSSL-fips-2_0-rc1~619
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=3f7468318dc56f34e1c5e98049b70558fea586b0;p=openssl

Provisional support for auto called OPENSSL_init() function. This can be
used to set up any appropriate functions such as FIPS callbacks without
requiring an explicit application call.
---

diff --git a/crypto/Makefile b/crypto/Makefile
index be0cf890b0..faacc01a54 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -34,8 +34,12 @@ GENERAL=Makefile README crypto-lib.com install.com
 
 LIB= $(TOP)/libcrypto.a
 SHARED_LIB= libcrypto$(SHLIB_EXT)
-LIBSRC=	cryptlib.c mem.c mem_clr.c mem_dbg.c cversion.c ex_data.c cpt_err.c ebcdic.c uid.c o_time.c o_str.c o_dir.c thr_id.c lock.c fips_ers.c
-LIBOBJ= cryptlib.o mem.o mem_dbg.o cversion.o ex_data.o cpt_err.o ebcdic.o uid.o o_time.o o_str.o o_dir.o thr_id.o lock.o fips_ers.o $(CPUID_OBJ)
+LIBSRC=	cryptlib.c mem.c mem_clr.c mem_dbg.c cversion.c ex_data.c cpt_err.c \
+	ebcdic.c uid.c o_time.c o_str.c o_dir.c thr_id.c lock.c fips_ers.c \
+	o_init.c
+LIBOBJ= cryptlib.o mem.o mem_dbg.o cversion.o ex_data.o cpt_err.o \
+	ebcdic.o uid.o o_time.o o_str.o o_dir.o thr_id.o lock.o fips_ers.o \
+	o_init.o $(CPUID_OBJ)
 
 SRC= $(LIBSRC)
 
@@ -84,6 +88,9 @@ pariscid.s:	pariscid.pl;	$(PERL) pariscid.pl $(PERLASM_SCHEME) $@
 alphacpuid.s:	alphacpuid.pl
 	$(PERL) $< | $(CC) -E - | tee $@ > /dev/null
 
+o_init.o: o_init.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
 testapps:
 	[ -z "$(THIS)" ] || (	if expr " $(SDIRS) " : ".* des " >/dev/null; \
 				then cd des && $(MAKE) -e des; fi )
diff --git a/crypto/crypto.h b/crypto/crypto.h
index 443486d70e..469790d7a9 100644
--- a/crypto/crypto.h
+++ b/crypto/crypto.h
@@ -560,6 +560,8 @@ unsigned int *OPENSSL_ia32cap_loc(void);
 #define OPENSSL_ia32cap ((OPENSSL_ia32cap_loc())[0])
 int OPENSSL_isservice(void);
 
+void OPENSSL_init(void);
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
diff --git a/crypto/o_init.c b/crypto/o_init.c
new file mode 100644
index 0000000000..c6bc754df1
--- /dev/null
+++ b/crypto/o_init.c
@@ -0,0 +1,118 @@
+/* o_init.c */
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project.
+ */
+/* ====================================================================
+ * Copyright (c) 2011 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ */
+
+#include <e_os.h>
+#include <openssl/err.h>
+
+#if defined(__GNUC__) && __GNUC__>=2
+  void OPENSSL_init(void) __attribute__((constructor));
+  /* Most commonly this results in pointer to OPENSSL_init to be dropped
+   * to .ctors segment, which is traversed by GCC crtbegin.o upon
+   * program startup. Except on a.out OpenBSD where it results in
+   * _GLOBAL_$I$init() {init();} being auto-generated by
+   * compiler... But one way or another this is believed to cover
+   * *all* GCC targets. */
+#elif defined(_MSC_VER)
+# ifdef _WINDLL
+  __declspec(dllexport)	/* this is essentially cosmetics... */
+# endif
+  void OPENSSL_init(void);
+  static int init_wrapper(void) { OPENSSL_init(); return 0; }
+# ifdef _WIN64
+# pragma section(".CRT$XCU",read)
+  __declspec(allocate(".CRT$XCU"))
+# else
+# pragma data_seg(".CRT$XCU")
+# endif
+  static int (*p)(void) = init_wrapper;
+  /* This results in pointer to init to appear in .CRT segment,
+   * which is traversed by Visual C run-time initialization code.
+   * This applies to both Win32 and [all flavors of] Win64. */
+# pragma data_seg()
+#elif defined(__SUNPRO_C)
+  void OPENSSL_init(void);
+# pragma init(OPENSSL_init)
+  /* This results in a call to init to appear in .init segment. */
+#elif defined(__DECC) && (defined(__VMS) || defined(VMS))
+  void OPENSSL_init(void);
+# pragma __nostandard
+  globaldef { "LIB$INITIALIZ" } readonly _align (LONGWORD)
+	int spare[8] = {0};
+  globaldef { "LIB$INITIALIZE" } readonly _align (LONGWORD)
+	void (*x_OPENSSL_init)(void) = OPENSSL_init;
+  /* Refer to LIB$INITIALIZE to ensure it exists in the image. */
+  int lib$initialize();
+  globaldef int (*lib_init_ref)() = lib$initialize;
+# pragma __standard
+#elif 0
+  The rest has to be taken care of through command line:
+
+	-Wl,-init,OPENSSL_init		on OSF1 and IRIX
+	-Wl,+init,OPENSSL_init		on HP-UX
+	-Wl,-binitfini:OPENSSL_init	on AIX
+
+  On ELF platforms this results in a call to OPENSSL_init to appear in
+  .init segment...
+#endif
+
+/* Perform any essential OpenSSL initialization operations.
+ * Currently only sets FIPS callbacks
+ */
+
+void OPENSSL_init(void)
+	{
+	fprintf(stderr, "Called OPENSSL_init\n");
+	}
+
+