--- /dev/null
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * 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 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 acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/asn1.h>
+
+#include <limits.h>
+#include <string.h>
+
+#include <openssl/asn1_mac.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+
+
+/* Cross-module errors from crypto/x509/i2d_pr.c. */
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNSUPPORTED_PUBLIC_KEY_TYPE)
+
+/* Cross-module errors from crypto/x509/algorithm.c. */
+OPENSSL_DECLARE_ERROR_REASON(ASN1, CONTEXT_NOT_INITIALISED)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, DIGEST_AND_KEY_TYPE_NOT_SUPPORTED)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNKNOWN_MESSAGE_DIGEST_ALGORITHM)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNKNOWN_SIGNATURE_ALGORITHM)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, WRONG_PUBLIC_KEY_TYPE)
+/*
+ * Cross-module errors from crypto/x509/asn1_gen.c. TODO(davidben): Remove
+ * these once asn1_gen.c is gone.
+ */
+OPENSSL_DECLARE_ERROR_REASON(ASN1, DEPTH_EXCEEDED)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_BITSTRING_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_BOOLEAN)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_HEX)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_IMPLICIT_TAG)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_INTEGER)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_NESTED_TAGGING)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_NULL_VALUE)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_OBJECT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, ILLEGAL_TIME_VALUE)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INTEGER_NOT_ASCII_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INVALID_MODIFIER)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, INVALID_NUMBER)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, LIST_ERROR)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, MISSING_VALUE)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, NOT_ASCII_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, OBJECT_NOT_ASCII_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, SEQUENCE_OR_SET_NEEDS_CONFIG)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, TIME_NOT_ASCII_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNKNOWN_FORMAT)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNKNOWN_TAG)
+OPENSSL_DECLARE_ERROR_REASON(ASN1, UNSUPPORTED_TYPE)
+
+static int asn1_get_length(const unsigned char **pp, int *inf, long *rl,
+ long max);
+static void asn1_put_length(unsigned char **pp, int length);
+
+int ASN1_get_object(const unsigned char **pp, long *plength, int *ptag,
+ int *pclass, long omax)
+{
+ int i, ret;
+ long l;
+ const unsigned char *p = *pp;
+ int tag, xclass, inf;
+ long max = omax;
+
+ if (!max)
+ goto err;
+ ret = (*p & V_ASN1_CONSTRUCTED);
+ xclass = (*p & V_ASN1_PRIVATE);
+ i = *p & V_ASN1_PRIMITIVE_TAG;
+ if (i == V_ASN1_PRIMITIVE_TAG) { /* high-tag */
+ p++;
+ if (--max == 0)
+ goto err;
+ l = 0;
+ while (*p & 0x80) {
+ l <<= 7L;
+ l |= *(p++) & 0x7f;
+ if (--max == 0)
+ goto err;
+ if (l > (INT_MAX >> 7L))
+ goto err;
+ }
+ l <<= 7L;
+ l |= *(p++) & 0x7f;
+ tag = (int)l;
+ if (--max == 0)
+ goto err;
+ } else {
+ tag = i;
+ p++;
+ if (--max == 0)
+ goto err;
+ }
+
+ /* To avoid ambiguity with V_ASN1_NEG, impose a limit on universal tags. */
+ if (xclass == V_ASN1_UNIVERSAL && tag > V_ASN1_MAX_UNIVERSAL)
+ goto err;
+
+ *ptag = tag;
+ *pclass = xclass;
+ if (!asn1_get_length(&p, &inf, plength, max))
+ goto err;
+
+ if (inf && !(ret & V_ASN1_CONSTRUCTED))
+ goto err;
+
+#if 0
+ fprintf(stderr, "p=%d + *plength=%ld > omax=%ld + *pp=%d (%d > %d)\n",
+ (int)p, *plength, omax, (int)*pp, (int)(p + *plength),
+ (int)(omax + *pp));
+
+#endif
+ if (*plength > (omax - (p - *pp))) {
+ OPENSSL_PUT_ERROR(ASN1, ASN1_R_TOO_LONG);
+ /*
+ * Set this so that even if things are not long enough the values are
+ * set correctly
+ */
+ ret |= 0x80;
+ }
+ *pp = p;
+ return (ret | inf);
+ err:
+ OPENSSL_PUT_ERROR(ASN1, ASN1_R_HEADER_TOO_LONG);
+ return (0x80);
+}
+
+static int asn1_get_length(const unsigned char **pp, int *inf, long *rl,
+ long max)
+{
+ const unsigned char *p = *pp;
+ unsigned long ret = 0;
+ unsigned long i;
+
+ if (max-- < 1)
+ return 0;
+ if (*p == 0x80) {
+ *inf = 1;
+ ret = 0;
+ p++;
+ } else {
+ *inf = 0;
+ i = *p & 0x7f;
+ if (*(p++) & 0x80) {
+ if (i > sizeof(ret) || max < (long)i)
+ return 0;
+ while (i-- > 0) {
+ ret <<= 8L;
+ ret |= *(p++);
+ }
+ } else
+ ret = i;
+ }
+ if (ret > LONG_MAX)
+ return 0;
+ *pp = p;
+ *rl = (long)ret;
+ return 1;
+}
+
+/*
+ * class 0 is constructed constructed == 2 for indefinite length constructed
+ */
+void ASN1_put_object(unsigned char **pp, int constructed, int length, int tag,
+ int xclass)
+{
+ unsigned char *p = *pp;
+ int i, ttag;
+
+ i = (constructed) ? V_ASN1_CONSTRUCTED : 0;
+ i |= (xclass & V_ASN1_PRIVATE);
+ if (tag < 31)
+ *(p++) = i | (tag & V_ASN1_PRIMITIVE_TAG);
+ else {
+ *(p++) = i | V_ASN1_PRIMITIVE_TAG;
+ for (i = 0, ttag = tag; ttag > 0; i++)
+ ttag >>= 7;
+ ttag = i;
+ while (i-- > 0) {
+ p[i] = tag & 0x7f;
+ if (i != (ttag - 1))
+ p[i] |= 0x80;
+ tag >>= 7;
+ }
+ p += ttag;
+ }
+ if (constructed == 2)
+ *(p++) = 0x80;
+ else
+ asn1_put_length(&p, length);
+ *pp = p;
+}
+
+int ASN1_put_eoc(unsigned char **pp)
+{
+ unsigned char *p = *pp;
+ *p++ = 0;
+ *p++ = 0;
+ *pp = p;
+ return 2;
+}
+
+static void asn1_put_length(unsigned char **pp, int length)
+{
+ unsigned char *p = *pp;
+ int i, l;
+ if (length <= 127)
+ *(p++) = (unsigned char)length;
+ else {
+ l = length;
+ for (i = 0; l > 0; i++)
+ l >>= 8;
+ *(p++) = i | 0x80;
+ l = i;
+ while (i-- > 0) {
+ p[i] = length & 0xff;
+ length >>= 8;
+ }
+ p += l;
+ }
+ *pp = p;
+}
+
+int ASN1_object_size(int constructed, int length, int tag)
+{
+ int ret = 1;
+ if (length < 0)
+ return -1;
+ if (tag >= 31) {
+ while (tag > 0) {
+ tag >>= 7;
+ ret++;
+ }
+ }
+ if (constructed == 2) {
+ ret += 3;
+ } else {
+ ret++;
+ if (length > 127) {
+ int tmplen = length;
+ while (tmplen > 0) {
+ tmplen >>= 8;
+ ret++;
+ }
+ }
+ }
+ if (ret >= INT_MAX - length)
+ return -1;
+ return ret + length;
+}
+
+int ASN1_STRING_copy(ASN1_STRING *dst, const ASN1_STRING *str)
+{
+ if (str == NULL)
+ return 0;
+ dst->type = str->type;
+ if (!ASN1_STRING_set(dst, str->data, str->length))
+ return 0;
+ dst->flags = str->flags;
+ return 1;
+}
+
+ASN1_STRING *ASN1_STRING_dup(const ASN1_STRING *str)
+{
+ ASN1_STRING *ret;
+ if (!str)
+ return NULL;
+ ret = ASN1_STRING_new();
+ if (!ret)
+ return NULL;
+ if (!ASN1_STRING_copy(ret, str)) {
+ ASN1_STRING_free(ret);
+ return NULL;
+ }
+ return ret;
+}
+
+int ASN1_STRING_set(ASN1_STRING *str, const void *_data, int len)
+{
+ unsigned char *c;
+ const char *data = _data;
+
+ if (len < 0) {
+ if (data == NULL)
+ return (0);
+ else
+ len = strlen(data);
+ }
+ if ((str->length <= len) || (str->data == NULL)) {
+ c = str->data;
+ if (c == NULL)
+ str->data = OPENSSL_malloc(len + 1);
+ else
+ str->data = OPENSSL_realloc(c, len + 1);
+
+ if (str->data == NULL) {
+ OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+ str->data = c;
+ return (0);
+ }
+ }
+ str->length = len;
+ if (data != NULL) {
+ OPENSSL_memcpy(str->data, data, len);
+ /* an allowance for strings :-) */
+ str->data[len] = '\0';
+ }
+ return (1);
+}
+
+void ASN1_STRING_set0(ASN1_STRING *str, void *data, int len)
+{
+ if (str->data)
+ OPENSSL_free(str->data);
+ str->data = data;
+ str->length = len;
+}
+
+ASN1_STRING *ASN1_STRING_new(void)
+{
+ return (ASN1_STRING_type_new(V_ASN1_OCTET_STRING));
+}
+
+ASN1_STRING *ASN1_STRING_type_new(int type)
+{
+ ASN1_STRING *ret;
+
+ ret = (ASN1_STRING *)OPENSSL_malloc(sizeof(ASN1_STRING));
+ if (ret == NULL) {
+ OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE);
+ return (NULL);
+ }
+ ret->length = 0;
+ ret->type = type;
+ ret->data = NULL;
+ ret->flags = 0;
+ return (ret);
+}
+
+void ASN1_STRING_free(ASN1_STRING *a)
+{
+ if (a == NULL)
+ return;
+ if (a->data && !(a->flags & ASN1_STRING_FLAG_NDEF))
+ OPENSSL_free(a->data);
+ OPENSSL_free(a);
+}
+
+int ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
+{
+ int i;
+
+ i = (a->length - b->length);
+ if (i == 0) {
+ i = OPENSSL_memcmp(a->data, b->data, a->length);
+ if (i == 0)
+ return (a->type - b->type);
+ else
+ return (i);
+ } else
+ return (i);
+}
+
+int ASN1_STRING_length(const ASN1_STRING *x)
+{
+ return M_ASN1_STRING_length(x);
+}
+
+void ASN1_STRING_length_set(ASN1_STRING *x, int len)
+{
+ M_ASN1_STRING_length_set(x, len);
+ return;
+}
+
+int ASN1_STRING_type(ASN1_STRING *x)
+{
+ return M_ASN1_STRING_type(x);
+}
+
+unsigned char *ASN1_STRING_data(ASN1_STRING *x)
+{
+ return M_ASN1_STRING_data(x);
+}
+
+const unsigned char *ASN1_STRING_get0_data(const ASN1_STRING *x)
+{
+ return x->data;
+}
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