--- /dev/null
+/* crypto/asn1/x_name.c */
+/* 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 <stdio.h>
+#include <ctype.h>
+#include "cryptlib.h"
+#include <openssl/asn1t.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);
+
+ASN1_SEQUENCE(X509_NAME_ENTRY) = {
+ ASN1_SIMPLE(X509_NAME_ENTRY, object, ASN1_OBJECT),
+ ASN1_SIMPLE(X509_NAME_ENTRY, value, ASN1_PRINTABLE)
+} ASN1_SEQUENCE_END(X509_NAME_ENTRY)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_NAME_ENTRY)
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME_ENTRY)
+
+/* For the "Name" type we need a SEQUENCE OF { SET OF X509_NAME_ENTRY }
+ * so declare two template wrappers for this
+ */
+
+ASN1_ITEM_TEMPLATE(X509_NAME_ENTRIES) =
+ ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SET_OF, 0, RDNS, X509_NAME_ENTRY)
+ASN1_ITEM_TEMPLATE_END(X509_NAME_ENTRIES)
+
+ASN1_ITEM_TEMPLATE(X509_NAME_INTERNAL) =
+ ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, Name, X509_NAME_ENTRIES)
+ASN1_ITEM_TEMPLATE_END(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
+};
+
+IMPLEMENT_EXTERN_ASN1(X509_NAME, V_ASN1_SEQUENCE, x509_name_ff)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_NAME)
+IMPLEMENT_ASN1_DUP_FUNCTION(X509_NAME)
+
+static int x509_name_ex_new(ASN1_VALUE **val, const ASN1_ITEM *it)
+{
+ X509_NAME *ret = NULL;
+ ret = OPENSSL_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:
+ ASN1err(ASN1_F_X509_NAME_EX_NEW, ERR_R_MALLOC_FAILURE);
+ if (ret)
+ {
+ if (ret->entries)
+ sk_X509_NAME_ENTRY_free(ret->entries);
+ OPENSSL_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);
+ if (a->canon_enc)
+ OPENSSL_free(a->canon_enc);
+ OPENSSL_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, ASN1_ITEM_rptr(X509_NAME_INTERNAL),
+ 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);
+ ASN1err(ASN1_F_X509_NAME_EX_D2I, 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(!sk_X509_NAME_ENTRY_push(entries, entry)) goto memerr;
+ }
+ len = ASN1_item_ex_i2d(&intname.a, NULL,
+ ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
+ if (!BUF_MEM_grow(a->bytes,len)) goto memerr;
+ p=(unsigned char *)a->bytes->data;
+ ASN1_item_ex_i2d(&intname.a,
+ &p, ASN1_ITEM_rptr(X509_NAME_INTERNAL), -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);
+ ASN1err(ASN1_F_X509_NAME_ENCODE, 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
+ * perfomed 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, set = -1, ret = 0;
+
+ if (a->canon_enc)
+ {
+ OPENSSL_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))
+ goto err;
+ set = entry->set;
+ }
+ tmpentry = X509_NAME_ENTRY_new();
+ tmpentry->object = OBJ_dup(entry->object);
+ if (!asn1_string_canon(tmpentry->value, entry->value))
+ goto err;
+ if(!sk_X509_NAME_ENTRY_push(entries, tmpentry))
+ goto err;
+ tmpentry = NULL;
+ }
+
+ /* Finally generate encoding */
+
+ a->canon_enclen = i2d_name_canon(intname, NULL);
+
+ p = OPENSSL_malloc(a->canon_enclen);
+
+ if (!p)
+ goto err;
+
+ a->canon_enc = p;
+
+ 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,
+ ASN1_ITEM_rptr(X509_NAME_ENTRIES), -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);
+ }
+
+IMPLEMENT_STACK_OF(X509_NAME_ENTRY)
+IMPLEMENT_ASN1_SET_OF(X509_NAME_ENTRY)
projects / cassiopeia.git / blobdiff