/* crypto/asn1/x_name.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
*/
#include <stdio.h>
+#include <ctype.h>
#include "cryptlib.h"
-#include "objects.h"
-#include "asn1_mac.h"
-
-/*
- * ASN1err(ASN1_F_D2I_X509_NAME,ASN1_R_LENGTH_MISMATCH);
- * ASN1err(ASN1_F_X509_NAME_NEW,ASN1_R_UNKNOWN_ATTRIBUTE_TYPE);
- * ASN1err(ASN1_F_D2I_X509_NAME_ENTRY,ASN1_R_LENGTH_MISMATCH);
- * ASN1err(ASN1_F_X509_NAME_ENTRY_NEW,ASN1_R_UNKNOWN_ATTRIBUTE_TYPE);
+#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
*/
-#ifndef NOPROTO
-static int i2d_X509_NAME_entries(X509_NAME *a);
-#else
-static int i2d_X509_NAME_entries();
-#endif
+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)
-int i2d_X509_NAME_ENTRY(a,pp)
-X509_NAME_ENTRY *a;
-unsigned char **pp;
- {
- M_ASN1_I2D_vars(a);
+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)
- M_ASN1_I2D_len(a->object,i2d_ASN1_OBJECT);
- M_ASN1_I2D_len(a->value,i2d_ASN1_PRINTABLE);
+/* 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;
- M_ASN1_I2D_seq_total();
+ 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;
+}
- M_ASN1_I2D_put(a->object,i2d_ASN1_OBJECT);
- M_ASN1_I2D_put(a->value,i2d_ASN1_PRINTABLE);
+static void x509_name_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it)
+{
+ X509_NAME *a;
+ if(!pval || !*pval)
+ return;
+ a = (X509_NAME *)*pval;
- M_ASN1_I2D_finish();
+ 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;
+}
-X509_NAME_ENTRY *d2i_X509_NAME_ENTRY(a,pp,length)
-X509_NAME_ENTRY **a;
-unsigned char **pp;
-long length;
+static void local_sk_X509_NAME_ENTRY_free(STACK_OF(X509_NAME_ENTRY) *ne)
{
- M_ASN1_D2I_vars(a,X509_NAME_ENTRY *,X509_NAME_ENTRY_new);
-
- M_ASN1_D2I_Init();
- M_ASN1_D2I_start_sequence();
- M_ASN1_D2I_get(ret->object,d2i_ASN1_OBJECT);
- M_ASN1_D2I_get(ret->value,d2i_ASN1_PRINTABLE);
- ret->set=0;
- M_ASN1_D2I_Finish(a,X509_NAME_ENTRY_free,ASN1_F_D2I_X509_NAME_ENTRY);
+ sk_X509_NAME_ENTRY_free(ne);
}
-int i2d_X509_NAME(a,pp)
-X509_NAME *a;
-unsigned char **pp;
+static void local_sk_X509_NAME_ENTRY_pop_free(STACK_OF(X509_NAME_ENTRY) *ne)
{
- int ret;
-
- if (a == NULL) return(0);
- if (a->modified)
- {
- ret=i2d_X509_NAME_entries(a);
- if (ret < 0) return(ret);
- }
+ sk_X509_NAME_ENTRY_pop_free(ne, X509_NAME_ENTRY_free);
+ }
- ret=a->bytes->length;
- if (pp != NULL)
- {
- memcpy(*pp,a->bytes->data,ret);
- *pp+=ret;
+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;
}
- return(ret);
+ 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;
}
-static int i2d_X509_NAME_entries(a)
-X509_NAME *a;
+/* 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)
{
- X509_NAME_ENTRY *ne,*fe=NULL;
- STACK *sk;
- BUF_MEM *buf=NULL;
- int set=0,r,ret=0;
- int i;
unsigned char *p;
- int size=0;
+ 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;
- sk=a->entries;
- for (i=0; i<sk_num(sk); i++)
+ if (a->canon_enc)
{
- ne=(X509_NAME_ENTRY *)sk_value(sk,i);
- if (fe == NULL)
+ 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)
{
- fe=ne;
- size=0;
+ 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;
+ }
- if (ne->set != set)
- {
- ret+=ASN1_object_size(1,size,V_ASN1_SET);
- fe->size=size;
- fe=ne;
- size=0;
- set=ne->set;
- }
- size+=i2d_X509_NAME_ENTRY(ne,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;
}
- ret+=ASN1_object_size(1,size,V_ASN1_SET);
- if (fe != NULL)
- fe->size=size;
+ out->type = V_ASN1_UTF8STRING;
+ out->length = ASN1_STRING_to_UTF8(&out->data, in);
+ if (out->length == -1)
+ return 0;
- r=ASN1_object_size(1,ret,V_ASN1_SEQUENCE);
+ to = out->data;
+ from = to;
- buf=a->bytes;
- if (!BUF_MEM_grow(buf,r)) goto err;
- p=(unsigned char *)buf->data;
+ len = out->length;
- ASN1_put_object(&p,1,ret,V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
+ /* 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.
+ */
- set= -1;
- for (i=0; i<sk_num(sk); i++)
+ /* Ignore leading spaces */
+ while((len > 0) && !(*from & 0x80) && isspace(*from))
{
- ne=(X509_NAME_ENTRY *)sk_value(sk,i);
- if (set != ne->set)
- {
- set=ne->set;
- ASN1_put_object(&p,1,ne->size,
- V_ASN1_SET,V_ASN1_UNIVERSAL);
- }
- i2d_X509_NAME_ENTRY(ne,&p);
+ from++;
+ len--;
}
- a->modified=0;
- return(r);
-err:
- return(-1);
- }
-X509_NAME *d2i_X509_NAME(a,pp,length)
-X509_NAME **a;
-unsigned char **pp;
-long length;
- {
- int set=0,i;
- int idx=0;
- unsigned char *orig;
- M_ASN1_D2I_vars(a,X509_NAME *,X509_NAME_new);
+ to = from + len - 1;
- orig= *pp;
- if (sk_num(ret->entries) > 0)
+ /* Ignore trailing spaces */
+ while ((len > 0) && !(*to & 0x80) && isspace(*to))
{
- while (sk_num(ret->entries) > 0)
- X509_NAME_ENTRY_free((X509_NAME_ENTRY *)
- sk_pop(ret->entries));
+ to--;
+ len--;
}
- M_ASN1_D2I_Init();
- M_ASN1_D2I_start_sequence();
- for (;;)
+ to = out->data;
+
+ i = 0;
+ while(i < len)
{
- if (M_ASN1_D2I_end_sequence()) break;
- M_ASN1_D2I_get_set(ret->entries,d2i_X509_NAME_ENTRY);
- for (; idx < sk_num(ret->entries); idx++)
+ /* 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
{
- ((X509_NAME_ENTRY *)sk_value(ret->entries,idx))->set=
- set;
+ *to++ = tolower(*from);
+ from++;
+ i++;
}
- set++;
}
- i=(int)(c.p-orig);
- if (!BUF_MEM_grow(ret->bytes,i)) goto err;
- memcpy(ret->bytes->data,orig,i);
- ret->bytes->length=i;
- ret->modified=0;
-
- M_ASN1_D2I_Finish(a,X509_NAME_free,ASN1_F_D2I_X509_NAME);
- }
-
-X509_NAME *X509_NAME_new()
- {
- X509_NAME *ret=NULL;
+ out->length = to - out->data;
- M_ASN1_New_Malloc(ret,X509_NAME);
- if ((ret->entries=sk_new(NULL)) == NULL) goto err2;
- M_ASN1_New(ret->bytes,BUF_MEM_new);
- ret->modified=1;
- return(ret);
- M_ASN1_New_Error(ASN1_F_X509_NAME_NEW);
- }
+ return 1;
-X509_NAME_ENTRY *X509_NAME_ENTRY_new()
- {
- X509_NAME_ENTRY *ret=NULL;
-
- M_ASN1_New_Malloc(ret,X509_NAME_ENTRY);
-/* M_ASN1_New(ret->object,ASN1_OBJECT_new);*/
- ret->object=NULL;
- ret->set=0;
- M_ASN1_New(ret->value,ASN1_STRING_new);
- return(ret);
- M_ASN1_New_Error(ASN1_F_X509_NAME_ENTRY_NEW);
}
-void X509_NAME_free(a)
-X509_NAME *a;
+static int i2d_name_canon(STACK_OF(STACK_OF_X509_NAME_ENTRY) *_intname,
+ unsigned char **in)
{
- BUF_MEM_free(a->bytes);
- sk_pop_free(a->entries,X509_NAME_ENTRY_free);
- Free((char *)a);
- }
+ int i, len, ltmp;
+ ASN1_VALUE *v;
+ STACK_OF(ASN1_VALUE) *intname = (STACK_OF(ASN1_VALUE) *)_intname;
-void X509_NAME_ENTRY_free(a)
-X509_NAME_ENTRY *a;
- {
- if (a == NULL) return;
- ASN1_OBJECT_free(a->object);
- ASN1_BIT_STRING_free(a->value);
- Free((char *)a);
+ 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(xn,name)
-X509_NAME **xn;
-X509_NAME *name;
+int X509_NAME_set(X509_NAME **xn, X509_NAME *name)
{
X509_NAME *in;
- if (*xn == NULL) return(0);
+ if (!xn || !name) return(0);
if (*xn != name)
{
return(*xn != NULL);
}
+IMPLEMENT_STACK_OF(X509_NAME_ENTRY)
+IMPLEMENT_ASN1_SET_OF(X509_NAME_ENTRY)
projects / openssl.git / blobdiff