1 files changed, 171 insertions, 0 deletions

diff --git a/src/lib/libcrypto/asn1/x_long.c b/src/lib/libcrypto/asn1/x_long.c
new file mode 100644
index 0000000000..0db233cb95
--- /dev/null
+++ b/src/lib/libcrypto/asn1/x_long.c
@@ -0,0 +1,171 @@
+/* x_long.c */
+/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
+ * project 2000.
+ */
+/* ====================================================================
+ * Copyright (c) 2000 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
+ *    licensing@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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/asn1t.h>
+#include <openssl/bn.h>
+
+/* Custom primitive type for long handling. This converts between an ASN1_INTEGER
+ * and a long directly.
+ */
+
+
+static int long_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
+static void long_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
+
+static int long_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it);
+static int long_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it);
+
+static ASN1_PRIMITIVE_FUNCS long_pf = {
+        NULL, 0,
+        long_new,
+        long_free,
+        long_free,      /* Clear should set to initial value */
+        long_c2i,
+        long_i2c
+};
+
+ASN1_ITEM_start(LONG)
+        ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &long_pf, ASN1_LONG_UNDEF, "LONG"
+ASN1_ITEM_end(LONG)
+
+ASN1_ITEM_start(ZLONG)
+        ASN1_ITYPE_PRIMITIVE, V_ASN1_INTEGER, NULL, 0, &long_pf, 0, "ZLONG"
+ASN1_ITEM_end(ZLONG)
+
+static int long_new(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+        *(long *)pval = it->size;
+        return 1;
+}
+
+static void long_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+        *(long *)pval = it->size;
+}
+
+static int long_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it)
+{
+        long ltmp;
+        unsigned long utmp;
+        int clen, pad, i;
+        /* this exists to bypass broken gcc optimization */
+        char *cp = (char *)pval;
+
+        /* use memcpy, because we may not be long aligned */
+        memcpy(&ltmp, cp, sizeof(long));
+
+        if(ltmp == it->size) return -1;
+        /* Convert the long to positive: we subtract one if negative so
+         * we can cleanly handle the padding if only the MSB of the leading
+         * octet is set. 
+         */
+        if(ltmp < 0) utmp = -ltmp - 1;
+        else utmp = ltmp;
+        clen = BN_num_bits_word(utmp);
+        /* If MSB of leading octet set we need to pad */
+        if(!(clen & 0x7)) pad = 1;
+        else pad = 0;
+
+        /* Convert number of bits to number of octets */
+        clen = (clen + 7) >> 3;
+
+        if(cont) {
+                if(pad) *cont++ = (ltmp < 0) ? 0xff : 0;
+                for(i = clen - 1; i >= 0; i--) {
+                        cont[i] = (unsigned char)(utmp & 0xff);
+                        if(ltmp < 0) cont[i] ^= 0xff;
+                        utmp >>= 8;
+                }
+        }
+        return clen + pad;
+}
+
+static int long_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
+                    int utype, char *free_cont, const ASN1_ITEM *it)
+{
+        int neg, i;
+        long ltmp;
+        unsigned long utmp = 0;
+        char *cp = (char *)pval;
+        if(len > (int)sizeof(long)) {
+                ASN1err(ASN1_F_LONG_C2I, ASN1_R_INTEGER_TOO_LARGE_FOR_LONG);
+                return 0;
+        }
+        /* Is it negative? */
+        if(len && (cont[0] & 0x80)) neg = 1;
+        else neg = 0;
+        utmp = 0;
+        for(i = 0; i < len; i++) {
+                utmp <<= 8;
+                if(neg) utmp |= cont[i] ^ 0xff;
+                else utmp |= cont[i];
+        }
+        ltmp = (long)utmp;
+        if(neg) {
+                ltmp++;
+                ltmp = -ltmp;
+        }
+        if(ltmp == it->size) {
+                ASN1err(ASN1_F_LONG_C2I, ASN1_R_INTEGER_TOO_LARGE_FOR_LONG);
+                return 0;
+        }
+        memcpy(cp, &ltmp, sizeof(long));
+        return 1;
+}