ref: 009439541d2c6e8af2596f8fb1b4df85861fd212
dir: /third_party/boringssl/src/crypto/x509/x509_obj.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 <string.h>
#include <openssl/buf.h>
#include <openssl/err.h>
#include <openssl/mem.h>
#include <openssl/obj.h>
#include <openssl/x509.h>
#include "../internal.h"
#include "internal.h"
// Limit to ensure we don't overflow: much greater than
// anything enountered in practice.
#define NAME_ONELINE_MAX (1024 * 1024)
char *X509_NAME_oneline(const X509_NAME *a, char *buf, int len) {
X509_NAME_ENTRY *ne;
size_t i;
int n, lold, l, l1, l2, num, j, type;
const char *s;
char *p;
unsigned char *q;
BUF_MEM *b = NULL;
static const char hex[17] = "0123456789ABCDEF";
int gs_doit[4];
char tmp_buf[80];
if (buf == NULL) {
if ((b = BUF_MEM_new()) == NULL) {
goto err;
}
if (!BUF_MEM_grow(b, 200)) {
goto err;
}
b->data[0] = '\0';
len = 200;
} else if (len <= 0) {
return NULL;
}
if (a == NULL) {
if (b) {
buf = b->data;
OPENSSL_free(b);
}
OPENSSL_strlcpy(buf, "NO X509_NAME", len);
return buf;
}
len--; // space for '\0'
l = 0;
for (i = 0; i < sk_X509_NAME_ENTRY_num(a->entries); i++) {
ne = sk_X509_NAME_ENTRY_value(a->entries, i);
n = OBJ_obj2nid(ne->object);
if ((n == NID_undef) || ((s = OBJ_nid2sn(n)) == NULL)) {
i2t_ASN1_OBJECT(tmp_buf, sizeof(tmp_buf), ne->object);
s = tmp_buf;
}
l1 = strlen(s);
type = ne->value->type;
num = ne->value->length;
if (num > NAME_ONELINE_MAX) {
OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG);
goto err;
}
q = ne->value->data;
if ((type == V_ASN1_GENERALSTRING) && ((num % 4) == 0)) {
gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 0;
for (j = 0; j < num; j++) {
if (q[j] != 0) {
gs_doit[j & 3] = 1;
}
}
if (gs_doit[0] | gs_doit[1] | gs_doit[2]) {
gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
} else {
gs_doit[0] = gs_doit[1] = gs_doit[2] = 0;
gs_doit[3] = 1;
}
} else {
gs_doit[0] = gs_doit[1] = gs_doit[2] = gs_doit[3] = 1;
}
for (l2 = j = 0; j < num; j++) {
if (!gs_doit[j & 3]) {
continue;
}
l2++;
if ((q[j] < ' ') || (q[j] > '~')) {
l2 += 3;
}
}
lold = l;
l += 1 + l1 + 1 + l2;
if (l > NAME_ONELINE_MAX) {
OPENSSL_PUT_ERROR(X509, X509_R_NAME_TOO_LONG);
goto err;
}
if (b != NULL) {
if (!BUF_MEM_grow(b, l + 1)) {
goto err;
}
p = &(b->data[lold]);
} else if (l > len) {
break;
} else {
p = &(buf[lold]);
}
*(p++) = '/';
OPENSSL_memcpy(p, s, (unsigned int)l1);
p += l1;
*(p++) = '=';
q = ne->value->data;
for (j = 0; j < num; j++) {
if (!gs_doit[j & 3]) {
continue;
}
n = q[j];
if ((n < ' ') || (n > '~')) {
*(p++) = '\\';
*(p++) = 'x';
*(p++) = hex[(n >> 4) & 0x0f];
*(p++) = hex[n & 0x0f];
} else {
*(p++) = n;
}
}
*p = '\0';
}
if (b != NULL) {
p = b->data;
OPENSSL_free(b);
} else {
p = buf;
}
if (i == 0) {
*p = '\0';
}
return p;
err:
BUF_MEM_free(b);
return NULL;
}