--- /dev/null
+/* x_long.c */
+/* Written by Dr Stephen N Henson (steve@openssl.org) 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 int long_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it, int indent, const ASN1_PCTX *pctx);
+
+static ASN1_PRIMITIVE_FUNCS long_pf = {
+ NULL, 0,
+ long_new,
+ long_free,
+ long_free, /* Clear should set to initial value */
+ long_c2i,
+ long_i2c,
+ long_print
+};
+
+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(<mp, 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, <mp, sizeof(long));
+ return 1;
+}
+
+static int long_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it,
+ int indent, const ASN1_PCTX *pctx)
+ {
+ return BIO_printf(out, "%ld\n", *(long *)pval);
+ }
projects / cassiopeia.git / blobdiff