Merge from internat.freebsd.org repo, minus change to rsa_eay.c (missing)

Reorganize and unify libcrypto's interface so that the RSA implementation
is chosen at runtime via dlopen().

This is a checkpoint and may require more tweaks still.

1 files changed, 121 insertions, 0 deletions

diff --git a/crypto/openssl/crypto/rsa/rsa_stubs.c b/crypto/openssl/crypto/rsa/rsa_stubs.c
new file mode 100644
index 0000000..3878290
--- /dev/null
+++ b/crypto/openssl/crypto/rsa/rsa_stubs.c
@@ -0,0 +1,121 @@
+/*-
+ * Copyright (c) 2000 Peter Wemm <peter@FreeBSD.org>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS 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 AUTHOR OR 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. SO THERE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef NO_RSA
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/rsa.h>
+
+#ifdef PIC
+#include <dlfcn.h>
+
+#define RSAUSA_SHLIB	"librsaUSA.so"
+#define RSAINTL_SHLIB	"librsaINTL.so"
+#define VERBOSE_STUBS	/* undef if you don't want missing rsaref reported */
+
+static void *
+getsym(const char *sym)
+{
+    static void *rsalib;
+    static int whined;
+    void *ret = NULL;
+
+    if (!rsalib)
+	rsalib = dlopen(RSAINTL_SHLIB, RTLD_LAZY);
+    if (!rsalib)
+	rsalib = dlopen(RSAUSA_SHLIB, RTLD_LAZY);
+    if (rsalib)
+	ret = dlsym(rsalib, sym);
+#ifdef VERBOSE_STUBS
+     if (!ret && !whined) {
+	fprintf(stderr, "** %s: Unable to find an rsa implemenation shared library.\n", sym);
+	fprintf(stderr, "** Install either the USA (%s) or International (%s)\n", RSAINTL_SHLIB, RSAUSA_SHLIB);
+	fprintf(stderr, "** RSA library on your system and run this program again\n");
+	whined = 1;
+     }
+#endif
+     return ret;
+}
+
+RSA_METHOD *
+RSA_PKCS1_stub(void)
+{
+    static RSA_METHOD * (*sym)(void);
+
+    if (sym || (sym = getsym("RSA_PKCS1")))
+	return sym();
+    return NULL;
+}
+__weak_reference(RSA_PKCS1_stub, RSA_PKCS1);
+
+void
+ERR_load_RSA_strings_stub(void)
+{
+    static void (*sym)(void);
+
+    if (sym || (sym = getsym("ERR_load_RSA_strings")))
+	sym();
+}
+__weak_reference(ERR_load_RSA_strings_stub, ERR_load_RSA_strings);
+
+#else	/* !PIC */
+
+RSA_METHOD *
+RSA_PKCS1_stub(void)
+{
+#ifdef VERBOSE_STUBS
+    static int whined;
+
+    if (!whined) {
+	fprintf(stderr, "** This program was statically linked without any RSA implemenation!\n\n");
+	whined = 1;
+    }
+#endif
+    return NULL;
+}
+__weak_reference(RSA_PKCS1_stub, RSA_PKCS1);
+__warn_references(RSA_PKCS1_stub, "Using stub RSA glue");
+
+void
+ERR_load_RSA_strings_stub(void)
+{
+#ifdef VERBOSE_STUBS
+    static int whined;
+
+    if (!whined) {
+	fprintf(stderr, "** This program was statically linked without any RSA implemenation!\n\n");
+	whined = 1;
+    }
+#endif
+}
+__weak_reference(ERR_load_RSA_strings_stub, ERR_load_RSA_strings);
+__warn_references(ERR_load_RSA_strings_stub, "Using stub RSA glue");
+
+#endif	/* !PIC */
+#endif	/* NO_RSA */