Upgrade openssl from 1.1.0e to 1.1.1b, with source code. 4.0.78

trunk/3rdparty/openssl-1.1-fit/crypto/asn1/x_long.c

@@ -0,0 +1,201 @@
+/*
+ * Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <stdio.h>
+#include "internal/cryptlib.h"
+#include <openssl/asn1t.h>
+
+#if !(OPENSSL_API_COMPAT < 0x10200000L)
+NON_EMPTY_TRANSLATION_UNIT
+#else
+
+#define COPY_SIZE(a, b) (sizeof(a) < sizeof(b) ? sizeof(a) : sizeof(b))
+
+/*
+ * 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)
+{
+    memcpy(pval, &it->size, COPY_SIZE(*pval, it->size));
+    return 1;
+}
+
+static void long_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+    memcpy(pval, &it->size, COPY_SIZE(*pval, it->size));
+}
+
+/*
+ * Originally BN_num_bits_word was called to perform this operation, but
+ * trouble is that there is no guarantee that sizeof(long) equals to
+ * sizeof(BN_ULONG). BN_ULONG is a configurable type that can be as wide
+ * as long, but also double or half...
+ */
+static int num_bits_ulong(unsigned long value)
+{
+    size_t i;
+    unsigned long ret = 0;
+
+    /*
+     * It is argued that *on average* constant counter loop performs
+     * not worse [if not better] than one with conditional break or
+     * mask-n-table-lookup-style, because of branch misprediction
+     * penalties.
+     */
+    for (i = 0; i < sizeof(value) * 8; i++) {
+        ret += (value != 0);
+        value >>= 1;
+    }
+
+    return (int)ret;
+}
+
+static int long_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype,
+                    const ASN1_ITEM *it)
+{
+    long ltmp;
+    unsigned long utmp, sign;
+    int clen, pad, i;
+
+    memcpy(&ltmp, pval, COPY_SIZE(*pval, ltmp));
+    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) {
+        sign = 0xff;
+        utmp = 0 - (unsigned long)ltmp - 1;
+    } else {
+        sign = 0;
+        utmp = ltmp;
+    }
+    clen = num_bits_ulong(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 != NULL) {
+        if (pad)
+            *cont++ = (unsigned char)sign;
+        for (i = clen - 1; i >= 0; i--) {
+            cont[i] = (unsigned char)(utmp ^ sign);
+            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 i;
+    long ltmp;
+    unsigned long utmp = 0, sign = 0x100;
+
+    if (len > 1) {
+        /*
+         * Check possible pad byte.  Worst case, we're skipping past actual
+         * content, but since that's only with 0x00 and 0xff and we set neg
+         * accordingly, the result will be correct in the end anyway.
+         */
+        switch (cont[0]) {
+        case 0xff:
+            cont++;
+            len--;
+            sign = 0xff;
+            break;
+        case 0:
+            cont++;
+            len--;
+            sign = 0;
+            break;
+        }
+    }
+    if (len > (int)sizeof(long)) {
+        ASN1err(ASN1_F_LONG_C2I, ASN1_R_INTEGER_TOO_LARGE_FOR_LONG);
+        return 0;
+    }
+
+    if (sign == 0x100) {
+        /* Is it negative? */
+        if (len && (cont[0] & 0x80))
+            sign = 0xff;
+        else
+            sign = 0;
+    } else if (((sign ^ cont[0]) & 0x80) == 0) { /* same sign bit? */
+        ASN1err(ASN1_F_LONG_C2I, ASN1_R_ILLEGAL_PADDING);
+        return 0;
+    }
+    utmp = 0;
+    for (i = 0; i < len; i++) {
+        utmp <<= 8;
+        utmp |= cont[i] ^ sign;
+    }
+    ltmp = (long)utmp;
+    if (ltmp < 0) {
+        ASN1err(ASN1_F_LONG_C2I, ASN1_R_INTEGER_TOO_LARGE_FOR_LONG);
+        return 0;
+    }
+    if (sign)
+        ltmp = -ltmp - 1;
+    if (ltmp == it->size) {
+        ASN1err(ASN1_F_LONG_C2I, ASN1_R_INTEGER_TOO_LARGE_FOR_LONG);
+        return 0;
+    }
+    memcpy(pval, &ltmp, COPY_SIZE(*pval, ltmp));
+    return 1;
+}
+
+static int long_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it,
+                      int indent, const ASN1_PCTX *pctx)
+{
+    long l;
+
+    memcpy(&l, pval, COPY_SIZE(*pval, l));
+    return BIO_printf(out, "%ld\n", l);
+}
+#endif