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-rw-r--r--crypto/asn1/x_long.c193
1 files changed, 105 insertions, 88 deletions
diff --git a/crypto/asn1/x_long.c b/crypto/asn1/x_long.c
index 75317418e1d8..3aed44a3ddf7 100644
--- a/crypto/asn1/x_long.c
+++ b/crypto/asn1/x_long.c
@@ -1,6 +1,7 @@
/* x_long.c */
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project 2000.
+/*
+ * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
+ * 2000.
*/
/* ====================================================================
* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
@@ -10,7 +11,7 @@
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * 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
@@ -61,119 +62,135 @@
#include <openssl/asn1t.h>
#include <openssl/bn.h>
-/* Custom primitive type for long handling. This converts between an ASN1_INTEGER
- * and a long directly.
+/*
+ * 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 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
+ 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_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_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;
+ *(long *)pval = it->size;
+ return 1;
}
static void long_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
{
- *(long *)pval = it->size;
+ *(long *)pval = it->size;
}
-static int long_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it)
+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;
+ 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 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;
+ 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;
}
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);
- }
+ int indent, const ASN1_PCTX *pctx)
+{
+ return BIO_printf(out, "%ld\n", *(long *)pval);
+}