early-access version 1255

2020-12-28 15:15:37 +00:00
parent 84b39492d1
commit 78b48028e1
6254 changed files with 1868140 additions and 0 deletions
--- a/externals/libressl/crypto/asn1/x_name.c
+++ b/externals/libressl/crypto/asn1/x_name.c
@@ -0,0 +1,655 @@
+/* $OpenBSD: x_name.c,v 1.34 2018/02/20 17:09:20 jsing Exp $ */
+/* 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 <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/err.h>
+#include <openssl/x509.h>
+
+#include "asn1_locl.h"
+
+typedef STACK_OF(X509_NAME_ENTRY) STACK_OF_X509_NAME_ENTRY;
+DECLARE_STACK_OF(STACK_OF_X509_NAME_ENTRY)
+
+static int x509_name_ex_d2i(ASN1_VALUE **val, const unsigned char **in,
+    long len, const ASN1_ITEM *it, int tag, int aclass, char opt,
+    ASN1_TLC *ctx);
+
+static int x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out,
+    const ASN1_ITEM *it, int tag, int aclass);
+static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it);
+static void x509_name_ex_free(ASN1_VALUE **val, const ASN1_ITEM *it);
+
+static int x509_name_encode(X509_NAME *a);
+static int x509_name_canon(X509_NAME *a);
+static int asn1_string_canon(ASN1_STRING *out, ASN1_STRING *in);
+static int i2d_name_canon(STACK_OF(STACK_OF_X509_NAME_ENTRY) *intname,
+    unsigned char **in);
+
+static int x509_name_ex_print(BIO *out, ASN1_VALUE **pval, int indent,
+    const char *fname, const ASN1_PCTX *pctx);
+
+static const ASN1_TEMPLATE X509_NAME_ENTRY_seq_tt[] = {
+	{
+		.offset = offsetof(X509_NAME_ENTRY, object),
+		.field_name = "object",
+		.item = &ASN1_OBJECT_it,
+	},
+	{
+		.offset = offsetof(X509_NAME_ENTRY, value),
+		.field_name = "value",
+		.item = &ASN1_PRINTABLE_it,
+	},
+};
+
+const ASN1_ITEM X509_NAME_ENTRY_it = {
+	.itype = ASN1_ITYPE_SEQUENCE,
+	.utype = V_ASN1_SEQUENCE,
+	.templates = X509_NAME_ENTRY_seq_tt,
+	.tcount = sizeof(X509_NAME_ENTRY_seq_tt) / sizeof(ASN1_TEMPLATE),
+	.size = sizeof(X509_NAME_ENTRY),
+	.sname = "X509_NAME_ENTRY",
+};
+
+
+X509_NAME_ENTRY *
+d2i_X509_NAME_ENTRY(X509_NAME_ENTRY **a, const unsigned char **in, long len)
+{
+	return (X509_NAME_ENTRY *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
+	    &X509_NAME_ENTRY_it);
+}
+
+int
+i2d_X509_NAME_ENTRY(X509_NAME_ENTRY *a, unsigned char **out)
+{
+	return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_NAME_ENTRY_it);
+}
+
+X509_NAME_ENTRY *
+X509_NAME_ENTRY_new(void)
+{
+	return (X509_NAME_ENTRY *)ASN1_item_new(&X509_NAME_ENTRY_it);
+}
+
+void
+X509_NAME_ENTRY_free(X509_NAME_ENTRY *a)
+{
+	ASN1_item_free((ASN1_VALUE *)a, &X509_NAME_ENTRY_it);
+}
+
+X509_NAME_ENTRY *
+X509_NAME_ENTRY_dup(X509_NAME_ENTRY *x)
+{
+	return ASN1_item_dup(&X509_NAME_ENTRY_it, x);
+}
+
+/* For the "Name" type we need a SEQUENCE OF { SET OF X509_NAME_ENTRY }
+ * so declare two template wrappers for this
+ */
+
+static const ASN1_TEMPLATE X509_NAME_ENTRIES_item_tt = {
+	.flags = ASN1_TFLG_SET_OF,
+	.tag = 0,
+	.offset = 0,
+	.field_name = "RDNS",
+	.item = &X509_NAME_ENTRY_it,
+};
+
+const ASN1_ITEM X509_NAME_ENTRIES_it = {
+	.itype = ASN1_ITYPE_PRIMITIVE,
+	.utype = -1,
+	.templates = &X509_NAME_ENTRIES_item_tt,
+	.tcount = 0,
+	.funcs = NULL,
+	.size = 0,
+	.sname = "X509_NAME_ENTRIES",
+};
+
+static const ASN1_TEMPLATE X509_NAME_INTERNAL_item_tt = {
+	.flags = ASN1_TFLG_SEQUENCE_OF,
+	.tag = 0,
+	.offset = 0,
+	.field_name = "Name",
+	.item = &X509_NAME_ENTRIES_it,
+};
+
+const ASN1_ITEM X509_NAME_INTERNAL_it = {
+	.itype = ASN1_ITYPE_PRIMITIVE,
+	.utype = -1,
+	.templates = &X509_NAME_INTERNAL_item_tt,
+	.tcount = 0,
+	.funcs = NULL,
+	.size = 0,
+	.sname = "X509_NAME_INTERNAL",
+};
+
+/* Normally that's where it would end: we'd have two nested STACK structures
+ * representing the ASN1. Unfortunately X509_NAME uses a completely different
+ * form and caches encodings so we have to process the internal form and convert
+ * to the external form.
+ */
+
+const ASN1_EXTERN_FUNCS x509_name_ff = {
+	NULL,
+	x509_name_ex_new,
+	x509_name_ex_free,
+	0,	/* Default clear behaviour is OK */
+	x509_name_ex_d2i,
+	x509_name_ex_i2d,
+	x509_name_ex_print
+};
+
+const ASN1_ITEM X509_NAME_it = {
+	.itype = ASN1_ITYPE_EXTERN,
+	.utype = V_ASN1_SEQUENCE,
+	.templates = NULL,
+	.tcount = 0,
+	.funcs = &x509_name_ff,
+	.size = 0,
+	.sname = "X509_NAME",
+};
+
+X509_NAME *
+d2i_X509_NAME(X509_NAME **a, const unsigned char **in, long len)
+{
+	return (X509_NAME *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
+	    &X509_NAME_it);
+}
+
+int
+i2d_X509_NAME(X509_NAME *a, unsigned char **out)
+{
+	return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_NAME_it);
+}
+
+X509_NAME *
+X509_NAME_new(void)
+{
+	return (X509_NAME *)ASN1_item_new(&X509_NAME_it);
+}
+
+void
+X509_NAME_free(X509_NAME *a)
+{
+	ASN1_item_free((ASN1_VALUE *)a, &X509_NAME_it);
+}
+
+X509_NAME *
+X509_NAME_dup(X509_NAME *x)
+{
+	return ASN1_item_dup(&X509_NAME_it, x);
+}
+
+static int
+x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it)
+{
+	X509_NAME *ret = NULL;
+
+	ret = malloc(sizeof(X509_NAME));
+	if (!ret)
+		goto memerr;
+	if ((ret->entries = sk_X509_NAME_ENTRY_new_null()) == NULL)
+		goto memerr;
+	if ((ret->bytes = BUF_MEM_new()) == NULL)
+		goto memerr;
+	ret->canon_enc = NULL;
+	ret->canon_enclen = 0;
+	ret->modified = 1;
+	*val = (ASN1_VALUE *)ret;
+	return 1;
+
+memerr:
+	ASN1error(ERR_R_MALLOC_FAILURE);
+	if (ret) {
+		if (ret->entries)
+			sk_X509_NAME_ENTRY_free(ret->entries);
+		free(ret);
+	}
+	return 0;
+}
+
+static void
+x509_name_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+	X509_NAME *a;
+
+	if (!pval || !*pval)
+		return;
+	a = (X509_NAME *)*pval;
+
+	BUF_MEM_free(a->bytes);
+	sk_X509_NAME_ENTRY_pop_free(a->entries, X509_NAME_ENTRY_free);
+	free(a->canon_enc);
+	free(a);
+	*pval = NULL;
+}
+
+static int
+x509_name_ex_d2i(ASN1_VALUE **val, const unsigned char **in, long len,
+    const ASN1_ITEM *it, int tag, int aclass, char opt, ASN1_TLC *ctx)
+{
+	const unsigned char *p = *in, *q;
+	union {
+		STACK_OF(STACK_OF_X509_NAME_ENTRY) *s;
+		ASN1_VALUE *a;
+	} intname = {NULL};
+	union {
+		X509_NAME *x;
+		ASN1_VALUE *a;
+	} nm = {NULL};
+	int i, j, ret;
+	STACK_OF(X509_NAME_ENTRY) *entries;
+	X509_NAME_ENTRY *entry;
+	q = p;
+
+	/* Get internal representation of Name */
+	ret = ASN1_item_ex_d2i(&intname.a, &p, len,
+	    &X509_NAME_INTERNAL_it, tag, aclass, opt, ctx);
+
+	if (ret <= 0)
+		return ret;
+
+	if (*val)
+		x509_name_ex_free(val, NULL);
+	if (!x509_name_ex_new(&nm.a, NULL))
+		goto err;
+	/* We've decoded it: now cache encoding */
+	if (!BUF_MEM_grow(nm.x->bytes, p - q))
+		goto err;
+	memcpy(nm.x->bytes->data, q, p - q);
+
+	/* Convert internal representation to X509_NAME structure */
+	for (i = 0; i < sk_STACK_OF_X509_NAME_ENTRY_num(intname.s); i++) {
+		entries = sk_STACK_OF_X509_NAME_ENTRY_value(intname.s, i);
+		for (j = 0; j < sk_X509_NAME_ENTRY_num(entries); j++) {
+			entry = sk_X509_NAME_ENTRY_value(entries, j);
+			entry->set = i;
+			if (!sk_X509_NAME_ENTRY_push(nm.x->entries, entry))
+				goto err;
+		}
+		sk_X509_NAME_ENTRY_free(entries);
+	}
+	sk_STACK_OF_X509_NAME_ENTRY_free(intname.s);
+	ret = x509_name_canon(nm.x);
+	if (!ret)
+		goto err;
+	nm.x->modified = 0;
+	*val = nm.a;
+	*in = p;
+	return ret;
+
+err:
+	if (nm.x != NULL)
+		X509_NAME_free(nm.x);
+	ASN1error(ERR_R_NESTED_ASN1_ERROR);
+	return 0;
+}
+
+static int
+x509_name_ex_i2d(ASN1_VALUE **val, unsigned char **out, const ASN1_ITEM *it,
+    int tag, int aclass)
+{
+	int ret;
+	X509_NAME *a = (X509_NAME *)*val;
+
+	if (a->modified) {
+		ret = x509_name_encode(a);
+		if (ret < 0)
+			return ret;
+		ret = x509_name_canon(a);
+		if (ret < 0)
+			return ret;
+	}
+	ret = a->bytes->length;
+	if (out != NULL) {
+		memcpy(*out, a->bytes->data, ret);
+		*out += ret;
+	}
+	return ret;
+}
+
+static void
+local_sk_X509_NAME_ENTRY_free(STACK_OF(X509_NAME_ENTRY) *ne)
+{
+	sk_X509_NAME_ENTRY_free(ne);
+}
+
+static void
+local_sk_X509_NAME_ENTRY_pop_free(STACK_OF(X509_NAME_ENTRY) *ne)
+{
+	sk_X509_NAME_ENTRY_pop_free(ne, X509_NAME_ENTRY_free);
+}
+
+static int
+x509_name_encode(X509_NAME *a)
+{
+	union {
+		STACK_OF(STACK_OF_X509_NAME_ENTRY) *s;
+		ASN1_VALUE *a;
+	} intname = {NULL};
+	int len;
+	unsigned char *p;
+	STACK_OF(X509_NAME_ENTRY) *entries = NULL;
+	X509_NAME_ENTRY *entry;
+	int i, set = -1;
+
+	intname.s = sk_STACK_OF_X509_NAME_ENTRY_new_null();
+	if (!intname.s)
+		goto memerr;
+	for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
+		entry = sk_X509_NAME_ENTRY_value(a->entries, i);
+		if (entry->set != set) {
+			entries = sk_X509_NAME_ENTRY_new_null();
+			if (!entries)
+				goto memerr;
+			if (!sk_STACK_OF_X509_NAME_ENTRY_push(intname.s,
+			    entries))
+				goto memerr;
+			set = entry->set;
+		}
+		if (entries == NULL /* if entry->set is bogusly -1 */ ||
+		    !sk_X509_NAME_ENTRY_push(entries, entry))
+			goto memerr;
+	}
+	len = ASN1_item_ex_i2d(&intname.a, NULL,
+	    &X509_NAME_INTERNAL_it, -1, -1);
+	if (!BUF_MEM_grow(a->bytes, len))
+		goto memerr;
+	p = (unsigned char *)a->bytes->data;
+	ASN1_item_ex_i2d(&intname.a, &p, &X509_NAME_INTERNAL_it,
+	    -1, -1);
+	sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
+	    local_sk_X509_NAME_ENTRY_free);
+	a->modified = 0;
+	return len;
+
+memerr:
+	sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname.s,
+	    local_sk_X509_NAME_ENTRY_free);
+	ASN1error(ERR_R_MALLOC_FAILURE);
+	return -1;
+}
+
+static int
+x509_name_ex_print(BIO *out, ASN1_VALUE **pval, int indent, const char *fname,
+    const ASN1_PCTX *pctx)
+{
+	if (X509_NAME_print_ex(out, (X509_NAME *)*pval, indent,
+	    pctx->nm_flags) <= 0)
+		return 0;
+	return 2;
+}
+
+/* This function generates the canonical encoding of the Name structure.
+ * In it all strings are converted to UTF8, leading, trailing and
+ * multiple spaces collapsed, converted to lower case and the leading
+ * SEQUENCE header removed.
+ *
+ * In future we could also normalize the UTF8 too.
+ *
+ * By doing this comparison of Name structures can be rapidly
+ * performed by just using memcmp() of the canonical encoding.
+ * By omitting the leading SEQUENCE name constraints of type
+ * dirName can also be checked with a simple memcmp().
+ */
+
+static int
+x509_name_canon(X509_NAME *a)
+{
+	unsigned char *p;
+	STACK_OF(STACK_OF_X509_NAME_ENTRY) *intname = NULL;
+	STACK_OF(X509_NAME_ENTRY) *entries = NULL;
+	X509_NAME_ENTRY *entry, *tmpentry = NULL;
+	int i, len, set = -1, ret = 0;
+
+	if (a->canon_enc) {
+		free(a->canon_enc);
+		a->canon_enc = NULL;
+	}
+	/* Special case: empty X509_NAME => null encoding */
+	if (sk_X509_NAME_ENTRY_num(a->entries) == 0) {
+		a->canon_enclen = 0;
+		return 1;
+	}
+	intname = sk_STACK_OF_X509_NAME_ENTRY_new_null();
+	if (!intname)
+		goto err;
+	for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
+		entry = sk_X509_NAME_ENTRY_value(a->entries, i);
+		if (entry->set != set) {
+			entries = sk_X509_NAME_ENTRY_new_null();
+			if (!entries)
+				goto err;
+			if (sk_STACK_OF_X509_NAME_ENTRY_push(intname,
+			    entries) == 0) {
+				sk_X509_NAME_ENTRY_free(entries);
+				goto err;
+			}
+			set = entry->set;
+		}
+		tmpentry = X509_NAME_ENTRY_new();
+		if (tmpentry == NULL)
+			goto err;
+		tmpentry->object = OBJ_dup(entry->object);
+		if (tmpentry->object == NULL)
+			goto err;
+		if (!asn1_string_canon(tmpentry->value, entry->value))
+			goto err;
+		if (entries == NULL /* if entry->set is bogusly -1 */ ||
+		    !sk_X509_NAME_ENTRY_push(entries, tmpentry))
+			goto err;
+		tmpentry = NULL;
+	}
+
+	/* Finally generate encoding */
+	len = i2d_name_canon(intname, NULL);
+	if (len < 0)
+		goto err;
+	p = malloc(len);
+	if (p == NULL)
+		goto err;
+	a->canon_enc = p;
+	a->canon_enclen = len;
+	i2d_name_canon(intname, &p);
+	ret = 1;
+
+err:
+	if (tmpentry)
+		X509_NAME_ENTRY_free(tmpentry);
+	if (intname)
+		sk_STACK_OF_X509_NAME_ENTRY_pop_free(intname,
+		    local_sk_X509_NAME_ENTRY_pop_free);
+	return ret;
+}
+
+/* Bitmap of all the types of string that will be canonicalized. */
+
+#define ASN1_MASK_CANON	\
+	(B_ASN1_UTF8STRING | B_ASN1_BMPSTRING | B_ASN1_UNIVERSALSTRING \
+	| B_ASN1_PRINTABLESTRING | B_ASN1_T61STRING | B_ASN1_IA5STRING \
+	| B_ASN1_VISIBLESTRING)
+
+
+static int
+asn1_string_canon(ASN1_STRING *out, ASN1_STRING *in)
+{
+	unsigned char *to, *from;
+	int len, i;
+
+	/* If type not in bitmask just copy string across */
+	if (!(ASN1_tag2bit(in->type) & ASN1_MASK_CANON)) {
+		if (!ASN1_STRING_copy(out, in))
+			return 0;
+		return 1;
+	}
+
+	out->type = V_ASN1_UTF8STRING;
+	out->length = ASN1_STRING_to_UTF8(&out->data, in);
+	if (out->length == -1)
+		return 0;
+
+	to = out->data;
+	from = to;
+
+	len = out->length;
+
+	/* Convert string in place to canonical form.
+	 * Ultimately we may need to handle a wider range of characters
+	 * but for now ignore anything with MSB set and rely on the
+	 * isspace() and tolower() functions.
+	 */
+
+	/* Ignore leading spaces */
+	while ((len > 0) && !(*from & 0x80) && isspace(*from)) {
+		from++;
+		len--;
+	}
+
+	to = from + len - 1;
+
+	/* Ignore trailing spaces */
+	while ((len > 0) && !(*to & 0x80) && isspace(*to)) {
+		to--;
+		len--;
+	}
+
+	to = out->data;
+
+	i = 0;
+	while (i < len) {
+		/* If MSB set just copy across */
+		if (*from & 0x80) {
+			*to++ = *from++;
+			i++;
+		}
+		/* Collapse multiple spaces */
+		else if (isspace(*from)) {
+			/* Copy one space across */
+			*to++ = ' ';
+			/* Ignore subsequent spaces. Note: don't need to
+			 * check len here because we know the last
+			 * character is a non-space so we can't overflow.
+			 */
+			do {
+				from++;
+				i++;
+			} while (!(*from & 0x80) && isspace(*from));
+		} else {
+			*to++ = tolower(*from);
+			from++;
+			i++;
+		}
+	}
+
+	out->length = to - out->data;
+
+	return 1;
+}
+
+static int
+i2d_name_canon(STACK_OF(STACK_OF_X509_NAME_ENTRY) *_intname, unsigned char **in)
+{
+	int i, len, ltmp;
+	ASN1_VALUE *v;
+	STACK_OF(ASN1_VALUE) *intname = (STACK_OF(ASN1_VALUE) *)_intname;
+
+	len = 0;
+	for (i = 0; i < sk_ASN1_VALUE_num(intname); i++) {
+		v = sk_ASN1_VALUE_value(intname, i);
+		ltmp = ASN1_item_ex_i2d(&v, in,
+		    &X509_NAME_ENTRIES_it, -1, -1);
+		if (ltmp < 0)
+			return ltmp;
+		len += ltmp;
+	}
+	return len;
+}
+
+int
+X509_NAME_set(X509_NAME **xn, X509_NAME *name)
+{
+	X509_NAME *in;
+
+	if (!xn || !name)
+		return (0);
+
+	if (*xn != name) {
+		in = X509_NAME_dup(name);
+		if (in != NULL) {
+			X509_NAME_free(*xn);
+			*xn = in;
+		}
+	}
+	return (*xn != NULL);
+}
+
+int
+X509_NAME_get0_der(X509_NAME *nm, const unsigned char **pder, size_t *pderlen)
+{
+	/* Make sure encoding is valid. */
+	if (i2d_X509_NAME(nm, NULL) <= 0)
+		return 0;
+	if (pder != NULL)
+		*pder = (unsigned char *)nm->bytes->data;
+	if (pderlen != NULL)
+		*pderlen = nm->bytes->length;
+	return 1;
+}