*/
#include <stdio.h>
+#include <ctype.h>
#include "cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/x509.h>
+#include "asn1_locl.h"
-static int x509_name_ex_d2i(ASN1_VALUE **val, unsigned char **in, long len, const ASN1_ITEM *it,
- int tag, int aclass, char opt, ASN1_TLC *ctx);
+typedef STACK_OF(X509_NAME_ENTRY) STACK_OF_X509_NAME_ENTRY;
+DECLARE_STACK_OF(STACK_OF_X509_NAME_ENTRY)
-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_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),
x509_name_ex_free,
0, /* Default clear behaviour is OK */
x509_name_ex_d2i,
- x509_name_ex_i2d
+ x509_name_ex_i2d,
+ x509_name_ex_print
};
IMPLEMENT_EXTERN_ASN1(X509_NAME, V_ASN1_SEQUENCE, x509_name_ff)
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_NEW, ERR_R_MALLOC_FAILURE);
+ ASN1err(ASN1_F_X509_NAME_EX_NEW, ERR_R_MALLOC_FAILURE);
if (ret)
{
if (ret->entries)
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;
}
-/* Used with sk_pop_free() to free up the internal representation.
- * NB: we only free the STACK and not its contents because it is
- * already present in the X509_NAME structure.
- */
-
-static void sk_internal_free(void *a)
-{
- sk_free(a);
-}
-
-static int x509_name_ex_d2i(ASN1_VALUE **val, unsigned char **in, long len, const ASN1_ITEM *it,
- int tag, int aclass, char opt, ASN1_TLC *ctx)
+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)
{
- unsigned char *p = *in, *q;
- STACK *intname = NULL;
+ 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;
- X509_NAME *nm = NULL;
STACK_OF(X509_NAME_ENTRY) *entries;
X509_NAME_ENTRY *entry;
q = p;
/* Get internal representation of Name */
- ret = ASN1_item_ex_d2i((ASN1_VALUE **)&intname, &p, len, ASN1_ITEM_rptr(X509_NAME_INTERNAL),
- tag, aclass, opt, ctx);
+ 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((ASN1_VALUE **)&nm, NULL)) goto err;
+ if(!x509_name_ex_new(&nm.a, NULL)) goto err;
/* We've decoded it: now cache encoding */
- if(!BUF_MEM_grow(nm->bytes, p - q)) goto err;
- memcpy(nm->bytes->data, q, p - q);
+ 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_num(intname); i++) {
- entries = (STACK_OF(X509_NAME_ENTRY) *)sk_value(intname, i);
+ 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->entries, entry))
+ if(!sk_X509_NAME_ENTRY_push(nm.x->entries, entry))
goto err;
}
sk_X509_NAME_ENTRY_free(entries);
}
- sk_free(intname);
- nm->modified = 0;
- *val = (ASN1_VALUE *)nm;
+ 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:
- ASN1err(ASN1_F_D2I_X509_NAME, ERR_R_NESTED_ASN1_ERROR);
+ ASN1err(ASN1_F_X509_NAME_EX_D2I, ERR_R_NESTED_ASN1_ERROR);
return 0;
}
int ret;
X509_NAME *a = (X509_NAME *)*val;
if(a->modified) {
- ret = x509_name_encode((X509_NAME *)a);
- if(ret < 0) return ret;
+ 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) {
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)
{
- STACK *intname = NULL;
+ 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 = sk_new_null();
- if(!intname) goto memerr;
+ 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_push(intname, (char *)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((ASN1_VALUE **)&intname, NULL, ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
+ 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((ASN1_VALUE **)&intname, &p, ASN1_ITEM_rptr(X509_NAME_INTERNAL), -1, -1);
- sk_pop_free(intname, sk_internal_free);
+ 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_pop_free(intname, sk_internal_free);
- ASN1err(ASN1_F_D2I_X509_NAME, ERR_R_MALLOC_FAILURE);
+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))
+ {
+ out->type = in->type;
+ if (!ASN1_STRING_set(out, in->data, in->length))
+ 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)
{
projects / openssl.git / blobdiff