diff options
author | Dr. Stephen Henson <steve@openssl.org> | 2015-03-16 17:43:17 +0000 |
---|---|---|
committer | Dr. Stephen Henson <steve@openssl.org> | 2015-03-25 14:15:00 +0000 |
commit | 2743e38c2f4bcb00142d8c65e48a66f547033a64 (patch) | |
tree | 640e29c0dbfd9abb5fd4dd0d993127a162965922 /crypto/x509 | |
parent | 70e5fd877890489a3972bf8bf50bfec1fca3875e (diff) | |
download | openssl-2743e38c2f4bcb00142d8c65e48a66f547033a64.tar.gz |
make X509_NAME opaque
Reviewed-by: Richard Levitte <levitte@openssl.org>
Diffstat (limited to 'crypto/x509')
-rw-r--r-- | crypto/x509/Makefile | 6 | ||||
-rw-r--r-- | crypto/x509/x509.h | 18 | ||||
-rw-r--r-- | crypto/x509/x509_cmp.c | 1 | ||||
-rw-r--r-- | crypto/x509/x509_obj.c | 1 | ||||
-rw-r--r-- | crypto/x509/x509name.c | 6 | ||||
-rw-r--r-- | crypto/x509/x_name.c | 524 |
6 files changed, 538 insertions, 18 deletions
diff --git a/crypto/x509/Makefile b/crypto/x509/Makefile index 2a576e06f3..cd585bd983 100644 --- a/crypto/x509/Makefile +++ b/crypto/x509/Makefile @@ -22,13 +22,15 @@ LIBSRC= x509_def.c x509_d2.c x509_r2x.c x509_cmp.c \ x509_set.c x509cset.c x509rset.c x509_err.c \ x509name.c x509_v3.c x509_ext.c x509_att.c \ x509type.c x509_lu.c x_all.c x509_txt.c \ - x509_trs.c by_file.c by_dir.c x509_vpm.c x_attrib.c x_exten.c + x509_trs.c by_file.c by_dir.c x509_vpm.c \ + x_attrib.c x_exten.c x_name.c LIBOBJ= x509_def.o x509_d2.o x509_r2x.o x509_cmp.o \ x509_obj.o x509_req.o x509spki.o x509_vfy.o \ x509_set.o x509cset.o x509rset.o x509_err.o \ x509name.o x509_v3.o x509_ext.o x509_att.o \ x509type.o x509_lu.o x_all.o x509_txt.o \ - x509_trs.o by_file.o by_dir.o x509_vpm.o x_attrib.o x_exten.o + x509_trs.o by_file.o by_dir.o x509_vpm.o \ + x_attrib.o x_exten.o x_name.o SRC= $(LIBSRC) diff --git a/crypto/x509/x509.h b/crypto/x509/x509.h index 5fcea0c6bb..7a59dab2d6 100644 --- a/crypto/x509/x509.h +++ b/crypto/x509/x509.h @@ -148,25 +148,10 @@ typedef struct X509_sig_st { ASN1_OCTET_STRING *digest; } X509_SIG; -typedef struct X509_name_entry_st { - ASN1_OBJECT *object; - ASN1_STRING *value; - int set; - int size; /* temp variable */ -} X509_NAME_ENTRY; +typedef struct X509_name_entry_st X509_NAME_ENTRY; DECLARE_STACK_OF(X509_NAME_ENTRY) -/* we always keep X509_NAMEs in 2 forms. */ -struct X509_name_st { - STACK_OF(X509_NAME_ENTRY) *entries; - int modified; /* true if 'bytes' needs to be built */ - BUF_MEM *bytes; -/* unsigned long hash; Keep the hash around for lookups */ - unsigned char *canon_enc; - int canon_enclen; -} /* X509_NAME */ ; - DECLARE_STACK_OF(X509_NAME) # define X509_EX_V_NETSCAPE_HACK 0x8000 @@ -980,6 +965,7 @@ int X509_NAME_ENTRY_set_data(X509_NAME_ENTRY *ne, int type, const unsigned char *bytes, int len); ASN1_OBJECT *X509_NAME_ENTRY_get_object(X509_NAME_ENTRY *ne); ASN1_STRING *X509_NAME_ENTRY_get_data(X509_NAME_ENTRY *ne); +int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne); int X509v3_get_ext_count(const STACK_OF(X509_EXTENSION) *x); int X509v3_get_ext_by_NID(const STACK_OF(X509_EXTENSION) *x, diff --git a/crypto/x509/x509_cmp.c b/crypto/x509/x509_cmp.c index eb46a677a4..51c47cc781 100644 --- a/crypto/x509/x509_cmp.c +++ b/crypto/x509/x509_cmp.c @@ -63,6 +63,7 @@ #include <openssl/objects.h> #include <openssl/x509.h> #include <openssl/x509v3.h> +#include "internal/x509_int.h" int X509_issuer_and_serial_cmp(const X509 *a, const X509 *b) { diff --git a/crypto/x509/x509_obj.c b/crypto/x509/x509_obj.c index d317f3af25..4e80c1b4fe 100644 --- a/crypto/x509/x509_obj.c +++ b/crypto/x509/x509_obj.c @@ -62,6 +62,7 @@ #include <openssl/objects.h> #include <openssl/x509.h> #include <openssl/buffer.h> +#include "internal/x509_int.h" char *X509_NAME_oneline(X509_NAME *a, char *buf, int len) { diff --git a/crypto/x509/x509name.c b/crypto/x509/x509name.c index 6ea601f962..6bb1e5d3aa 100644 --- a/crypto/x509/x509name.c +++ b/crypto/x509/x509name.c @@ -63,6 +63,7 @@ #include <openssl/objects.h> #include <openssl/evp.h> #include <openssl/x509.h> +#include "internal/x509_int.h" int X509_NAME_get_text_by_NID(X509_NAME *name, int nid, char *buf, int len) { @@ -395,3 +396,8 @@ ASN1_STRING *X509_NAME_ENTRY_get_data(X509_NAME_ENTRY *ne) return (NULL); return (ne->value); } + +int X509_NAME_ENTRY_set(const X509_NAME_ENTRY *ne) +{ + return ne->set; +} diff --git a/crypto/x509/x_name.c b/crypto/x509/x_name.c new file mode 100644 index 0000000000..e6a862e90d --- /dev/null +++ b/crypto/x509/x_name.c @@ -0,0 +1,524 @@ +/* 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 "internal/x509_int.h" +#include "internal/asn1_int.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(); + if (!tmpentry) + goto err; + 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); +} |