ref: 009439541d2c6e8af2596f8fb1b4df85861fd212
dir: /third_party/boringssl/src/crypto/x509/name_print.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 <openssl/x509.h>
#include <assert.h>
#include <inttypes.h>
#include <string.h>
#include <openssl/asn1.h>
#include <openssl/bio.h>
#include <openssl/obj.h>
static int maybe_write(BIO *out, const void *buf, int len) {
// If |out| is NULL, ignore the output but report the length.
return out == NULL || BIO_write(out, buf, len) == len;
}
// do_indent prints |indent| spaces to |out|.
static int do_indent(BIO *out, int indent) {
for (int i = 0; i < indent; i++) {
if (!maybe_write(out, " ", 1)) {
return 0;
}
}
return 1;
}
#define FN_WIDTH_LN 25
#define FN_WIDTH_SN 10
static int do_name_ex(BIO *out, const X509_NAME *n, int indent,
unsigned long flags) {
int prev = -1, orflags;
char objtmp[80];
const char *objbuf;
int outlen, len;
const char *sep_dn, *sep_mv, *sep_eq;
int sep_dn_len, sep_mv_len, sep_eq_len;
if (indent < 0) {
indent = 0;
}
outlen = indent;
if (!do_indent(out, indent)) {
return -1;
}
switch (flags & XN_FLAG_SEP_MASK) {
case XN_FLAG_SEP_MULTILINE:
sep_dn = "\n";
sep_dn_len = 1;
sep_mv = " + ";
sep_mv_len = 3;
break;
case XN_FLAG_SEP_COMMA_PLUS:
sep_dn = ",";
sep_dn_len = 1;
sep_mv = "+";
sep_mv_len = 1;
indent = 0;
break;
case XN_FLAG_SEP_CPLUS_SPC:
sep_dn = ", ";
sep_dn_len = 2;
sep_mv = " + ";
sep_mv_len = 3;
indent = 0;
break;
case XN_FLAG_SEP_SPLUS_SPC:
sep_dn = "; ";
sep_dn_len = 2;
sep_mv = " + ";
sep_mv_len = 3;
indent = 0;
break;
default:
return -1;
}
if (flags & XN_FLAG_SPC_EQ) {
sep_eq = " = ";
sep_eq_len = 3;
} else {
sep_eq = "=";
sep_eq_len = 1;
}
int cnt = X509_NAME_entry_count(n);
for (int i = 0; i < cnt; i++) {
const X509_NAME_ENTRY *ent;
if (flags & XN_FLAG_DN_REV) {
ent = X509_NAME_get_entry(n, cnt - i - 1);
} else {
ent = X509_NAME_get_entry(n, i);
}
if (prev != -1) {
if (prev == X509_NAME_ENTRY_set(ent)) {
if (!maybe_write(out, sep_mv, sep_mv_len)) {
return -1;
}
outlen += sep_mv_len;
} else {
if (!maybe_write(out, sep_dn, sep_dn_len)) {
return -1;
}
outlen += sep_dn_len;
if (!do_indent(out, indent)) {
return -1;
}
outlen += indent;
}
}
prev = X509_NAME_ENTRY_set(ent);
const ASN1_OBJECT *fn = X509_NAME_ENTRY_get_object(ent);
const ASN1_STRING *val = X509_NAME_ENTRY_get_data(ent);
assert((flags & XN_FLAG_FN_MASK) == XN_FLAG_FN_SN);
int fn_nid = OBJ_obj2nid(fn);
if (fn_nid == NID_undef) {
OBJ_obj2txt(objtmp, sizeof(objtmp), fn, 1);
objbuf = objtmp;
} else {
objbuf = OBJ_nid2sn(fn_nid);
}
int objlen = strlen(objbuf);
if (!maybe_write(out, objbuf, objlen) ||
!maybe_write(out, sep_eq, sep_eq_len)) {
return -1;
}
outlen += objlen + sep_eq_len;
// If the field name is unknown then fix up the DER dump flag. We
// might want to limit this further so it will DER dump on anything
// other than a few 'standard' fields.
if ((fn_nid == NID_undef) && (flags & XN_FLAG_DUMP_UNKNOWN_FIELDS)) {
orflags = ASN1_STRFLGS_DUMP_ALL;
} else {
orflags = 0;
}
len = ASN1_STRING_print_ex(out, val, flags | orflags);
if (len < 0) {
return -1;
}
outlen += len;
}
return outlen;
}
int X509_NAME_print_ex(BIO *out, const X509_NAME *nm, int indent,
unsigned long flags) {
if (flags == XN_FLAG_COMPAT) {
return X509_NAME_print(out, nm, indent);
}
return do_name_ex(out, nm, indent, flags);
}
int X509_NAME_print_ex_fp(FILE *fp, const X509_NAME *nm, int indent,
unsigned long flags) {
BIO *bio = NULL;
if (fp != NULL) {
// If |fp| is NULL, this function returns the number of bytes without
// writing.
bio = BIO_new_fp(fp, BIO_NOCLOSE);
if (bio == NULL) {
return -1;
}
}
int ret = X509_NAME_print_ex(bio, nm, indent, flags);
BIO_free(bio);
return ret;
}