/* 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 "cryptlib.h" #include <openssl/asn1t.h> #include <openssl/x509.h> 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); 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 }; 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->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); 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, 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 *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_num(intname.s); i++) { entries = (STACK_OF(X509_NAME_ENTRY) *)sk_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_free(intname.s); nm.x->modified = 0; *val = nm.a; *in = p; return ret; err: 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((X509_NAME *)a); if(ret < 0) return ret; } ret = a->bytes->length; if(out != NULL) { memcpy(*out,a->bytes->data,ret); *out+=ret; } return ret; } static int x509_name_encode(X509_NAME *a) { union { STACK *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_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.s, (char *)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_pop_free(intname.s, sk_internal_free); a->modified = 0; return len; memerr: sk_pop_free(intname.s, sk_internal_free); ASN1err(ASN1_F_X509_NAME_ENCODE, ERR_R_MALLOC_FAILURE); return -1; } 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)