| /* 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/asn1.h> |
| |
| #include <limits.h> |
| #include <string.h> |
| |
| #include <openssl/err.h> |
| #include <openssl/mem.h> |
| #include <openssl/obj.h> |
| |
| #include "../internal.h" |
| #include "internal.h" |
| |
| |
| int i2d_ASN1_OBJECT(const ASN1_OBJECT *a, unsigned char **pp) { |
| if (a == NULL) { |
| OPENSSL_PUT_ERROR(ASN1, ERR_R_PASSED_NULL_PARAMETER); |
| return -1; |
| } |
| |
| if (a->length == 0) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_ILLEGAL_OBJECT); |
| return -1; |
| } |
| |
| int objsize = ASN1_object_size(0, a->length, V_ASN1_OBJECT); |
| if (pp == NULL || objsize == -1) { |
| return objsize; |
| } |
| |
| unsigned char *p, *allocated = NULL; |
| if (*pp == NULL) { |
| if ((p = allocated = OPENSSL_malloc(objsize)) == NULL) { |
| OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE); |
| return -1; |
| } |
| } else { |
| p = *pp; |
| } |
| |
| ASN1_put_object(&p, 0, a->length, V_ASN1_OBJECT, V_ASN1_UNIVERSAL); |
| OPENSSL_memcpy(p, a->data, a->length); |
| |
| // If a new buffer was allocated, just return it back. |
| // If not, return the incremented buffer pointer. |
| *pp = allocated != NULL ? allocated : p + a->length; |
| return objsize; |
| } |
| |
| int i2t_ASN1_OBJECT(char *buf, int buf_len, const ASN1_OBJECT *a) { |
| return OBJ_obj2txt(buf, buf_len, a, 0); |
| } |
| |
| static int write_str(BIO *bp, const char *str) { |
| int len = strlen(str); |
| return BIO_write(bp, str, len) == len ? len : -1; |
| } |
| |
| int i2a_ASN1_OBJECT(BIO *bp, const ASN1_OBJECT *a) { |
| if (a == NULL || a->data == NULL) { |
| return write_str(bp, "NULL"); |
| } |
| |
| char buf[80], *allocated = NULL; |
| const char *str = buf; |
| int len = i2t_ASN1_OBJECT(buf, sizeof(buf), a); |
| if (len > (int)sizeof(buf) - 1) { |
| // The input was truncated. Allocate a buffer that fits. |
| allocated = OPENSSL_malloc(len + 1); |
| if (allocated == NULL) { |
| return -1; |
| } |
| len = i2t_ASN1_OBJECT(allocated, len + 1, a); |
| str = allocated; |
| } |
| if (len <= 0) { |
| str = "<INVALID>"; |
| } |
| |
| int ret = write_str(bp, str); |
| OPENSSL_free(allocated); |
| return ret; |
| } |
| |
| ASN1_OBJECT *d2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp, |
| long length) { |
| long len; |
| int tag, xclass; |
| const unsigned char *p = *pp; |
| int inf = ASN1_get_object(&p, &len, &tag, &xclass, length); |
| if (inf & 0x80) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_BAD_OBJECT_HEADER); |
| return NULL; |
| } |
| |
| if (inf & V_ASN1_CONSTRUCTED) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_TYPE_NOT_PRIMITIVE); |
| return NULL; |
| } |
| |
| if (tag != V_ASN1_OBJECT || xclass != V_ASN1_UNIVERSAL) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_EXPECTING_AN_OBJECT); |
| return NULL; |
| } |
| ASN1_OBJECT *ret = c2i_ASN1_OBJECT(a, &p, len); |
| if (ret) { |
| *pp = p; |
| } |
| return ret; |
| } |
| |
| ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp, |
| long len) { |
| ASN1_OBJECT *ret = NULL; |
| const unsigned char *p; |
| unsigned char *data; |
| int i, length; |
| |
| // Sanity check OID encoding. Need at least one content octet. MSB must |
| // be clear in the last octet. can't have leading 0x80 in subidentifiers, |
| // see: X.690 8.19.2 |
| if (len <= 0 || len > INT_MAX || pp == NULL || (p = *pp) == NULL || |
| p[len - 1] & 0x80) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_OBJECT_ENCODING); |
| return NULL; |
| } |
| // Now 0 < len <= INT_MAX, so the cast is safe. |
| length = (int)len; |
| for (i = 0; i < length; i++, p++) { |
| if (*p == 0x80 && (!i || !(p[-1] & 0x80))) { |
| OPENSSL_PUT_ERROR(ASN1, ASN1_R_INVALID_OBJECT_ENCODING); |
| return NULL; |
| } |
| } |
| |
| if ((a == NULL) || ((*a) == NULL) || |
| !((*a)->flags & ASN1_OBJECT_FLAG_DYNAMIC)) { |
| if ((ret = ASN1_OBJECT_new()) == NULL) { |
| return NULL; |
| } |
| } else { |
| ret = (*a); |
| } |
| |
| p = *pp; |
| // detach data from object |
| data = (unsigned char *)ret->data; |
| ret->data = NULL; |
| // once detached we can change it |
| if ((data == NULL) || (ret->length < length)) { |
| ret->length = 0; |
| if (data != NULL) { |
| OPENSSL_free(data); |
| } |
| data = (unsigned char *)OPENSSL_malloc(length); |
| if (data == NULL) { |
| i = ERR_R_MALLOC_FAILURE; |
| goto err; |
| } |
| ret->flags |= ASN1_OBJECT_FLAG_DYNAMIC_DATA; |
| } |
| OPENSSL_memcpy(data, p, length); |
| // If there are dynamic strings, free them here, and clear the flag |
| if ((ret->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS) != 0) { |
| OPENSSL_free((char *)ret->sn); |
| OPENSSL_free((char *)ret->ln); |
| ret->flags &= ~ASN1_OBJECT_FLAG_DYNAMIC_STRINGS; |
| } |
| // reattach data to object, after which it remains const |
| ret->data = data; |
| ret->length = length; |
| ret->sn = NULL; |
| ret->ln = NULL; |
| p += length; |
| |
| if (a != NULL) { |
| (*a) = ret; |
| } |
| *pp = p; |
| return ret; |
| err: |
| OPENSSL_PUT_ERROR(ASN1, i); |
| if ((ret != NULL) && ((a == NULL) || (*a != ret))) { |
| ASN1_OBJECT_free(ret); |
| } |
| return NULL; |
| } |
| |
| ASN1_OBJECT *ASN1_OBJECT_new(void) { |
| ASN1_OBJECT *ret; |
| |
| ret = (ASN1_OBJECT *)OPENSSL_malloc(sizeof(ASN1_OBJECT)); |
| if (ret == NULL) { |
| OPENSSL_PUT_ERROR(ASN1, ERR_R_MALLOC_FAILURE); |
| return NULL; |
| } |
| ret->length = 0; |
| ret->data = NULL; |
| ret->nid = 0; |
| ret->sn = NULL; |
| ret->ln = NULL; |
| ret->flags = ASN1_OBJECT_FLAG_DYNAMIC; |
| return ret; |
| } |
| |
| void ASN1_OBJECT_free(ASN1_OBJECT *a) { |
| if (a == NULL) { |
| return; |
| } |
| if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_STRINGS) { |
| OPENSSL_free((void *)a->sn); |
| OPENSSL_free((void *)a->ln); |
| a->sn = a->ln = NULL; |
| } |
| if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC_DATA) { |
| OPENSSL_free((void *)a->data); |
| a->data = NULL; |
| a->length = 0; |
| } |
| if (a->flags & ASN1_OBJECT_FLAG_DYNAMIC) { |
| OPENSSL_free(a); |
| } |
| } |
| |
| ASN1_OBJECT *ASN1_OBJECT_create(int nid, const unsigned char *data, int len, |
| const char *sn, const char *ln) { |
| ASN1_OBJECT o; |
| |
| o.sn = sn; |
| o.ln = ln; |
| o.data = data; |
| o.nid = nid; |
| o.length = len; |
| o.flags = ASN1_OBJECT_FLAG_DYNAMIC | ASN1_OBJECT_FLAG_DYNAMIC_STRINGS | |
| ASN1_OBJECT_FLAG_DYNAMIC_DATA; |
| return (OBJ_dup(&o)); |
| } |