--- /dev/null
+/* crypto/asn1/a_bytes.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/asn1.h>
+
+static int asn1_collate_primitive(ASN1_STRING *a, ASN1_const_CTX *c);
+/* type is a 'bitmap' of acceptable string types.
+ */
+ASN1_STRING *d2i_ASN1_type_bytes(ASN1_STRING **a, const unsigned char **pp,
+ long length, int type)
+ {
+ ASN1_STRING *ret=NULL;
+ const unsigned char *p;
+ unsigned char *s;
+ long len;
+ int inf,tag,xclass;
+ int i=0;
+
+ p= *pp;
+ inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
+ if (inf & 0x80) goto err;
+
+ if (tag >= 32)
+ {
+ i=ASN1_R_TAG_VALUE_TOO_HIGH;
+ goto err;
+ }
+ if (!(ASN1_tag2bit(tag) & type))
+ {
+ i=ASN1_R_WRONG_TYPE;
+ goto err;
+ }
+
+ /* If a bit-string, exit early */
+ if (tag == V_ASN1_BIT_STRING)
+ return(d2i_ASN1_BIT_STRING(a,pp,length));
+
+ if ((a == NULL) || ((*a) == NULL))
+ {
+ if ((ret=ASN1_STRING_new()) == NULL) return(NULL);
+ }
+ else
+ ret=(*a);
+
+ if (len != 0)
+ {
+ s=(unsigned char *)OPENSSL_malloc((int)len+1);
+ if (s == NULL)
+ {
+ i=ERR_R_MALLOC_FAILURE;
+ goto err;
+ }
+ memcpy(s,p,(int)len);
+ s[len]='\0';
+ p+=len;
+ }
+ else
+ s=NULL;
+
+ if (ret->data != NULL) OPENSSL_free(ret->data);
+ ret->length=(int)len;
+ ret->data=s;
+ ret->type=tag;
+ if (a != NULL) (*a)=ret;
+ *pp=p;
+ return(ret);
+err:
+ ASN1err(ASN1_F_D2I_ASN1_TYPE_BYTES,i);
+ if ((ret != NULL) && ((a == NULL) || (*a != ret)))
+ ASN1_STRING_free(ret);
+ return(NULL);
+ }
+
+int i2d_ASN1_bytes(ASN1_STRING *a, unsigned char **pp, int tag, int xclass)
+ {
+ int ret,r,constructed;
+ unsigned char *p;
+
+ if (a == NULL) return(0);
+
+ if (tag == V_ASN1_BIT_STRING)
+ return(i2d_ASN1_BIT_STRING(a,pp));
+
+ ret=a->length;
+ r=ASN1_object_size(0,ret,tag);
+ if (pp == NULL) return(r);
+ p= *pp;
+
+ if ((tag == V_ASN1_SEQUENCE) || (tag == V_ASN1_SET))
+ constructed=1;
+ else
+ constructed=0;
+ ASN1_put_object(&p,constructed,ret,tag,xclass);
+ memcpy(p,a->data,a->length);
+ p+=a->length;
+ *pp= p;
+ return(r);
+ }
+
+ASN1_STRING *d2i_ASN1_bytes(ASN1_STRING **a, const unsigned char **pp,
+ long length, int Ptag, int Pclass)
+ {
+ ASN1_STRING *ret=NULL;
+ const unsigned char *p;
+ unsigned char *s;
+ long len;
+ int inf,tag,xclass;
+ int i=0;
+
+ if ((a == NULL) || ((*a) == NULL))
+ {
+ if ((ret=ASN1_STRING_new()) == NULL) return(NULL);
+ }
+ else
+ ret=(*a);
+
+ p= *pp;
+ inf=ASN1_get_object(&p,&len,&tag,&xclass,length);
+ if (inf & 0x80)
+ {
+ i=ASN1_R_BAD_OBJECT_HEADER;
+ goto err;
+ }
+
+ if (tag != Ptag)
+ {
+ i=ASN1_R_WRONG_TAG;
+ goto err;
+ }
+
+ if (inf & V_ASN1_CONSTRUCTED)
+ {
+ ASN1_const_CTX c;
+
+ c.pp=pp;
+ c.p=p;
+ c.inf=inf;
+ c.slen=len;
+ c.tag=Ptag;
+ c.xclass=Pclass;
+ c.max=(length == 0)?0:(p+length);
+ if (!asn1_collate_primitive(ret,&c))
+ goto err;
+ else
+ {
+ p=c.p;
+ }
+ }
+ else
+ {
+ if (len != 0)
+ {
+ if ((ret->length < len) || (ret->data == NULL))
+ {
+ if (ret->data != NULL) OPENSSL_free(ret->data);
+ s=(unsigned char *)OPENSSL_malloc((int)len + 1);
+ if (s == NULL)
+ {
+ i=ERR_R_MALLOC_FAILURE;
+ goto err;
+ }
+ }
+ else
+ s=ret->data;
+ memcpy(s,p,(int)len);
+ s[len] = '\0';
+ p+=len;
+ }
+ else
+ {
+ s=NULL;
+ if (ret->data != NULL) OPENSSL_free(ret->data);
+ }
+
+ ret->length=(int)len;
+ ret->data=s;
+ ret->type=Ptag;
+ }
+
+ if (a != NULL) (*a)=ret;
+ *pp=p;
+ return(ret);
+err:
+ if ((ret != NULL) && ((a == NULL) || (*a != ret)))
+ ASN1_STRING_free(ret);
+ ASN1err(ASN1_F_D2I_ASN1_BYTES,i);
+ return(NULL);
+ }
+
+
+/* We are about to parse 0..n d2i_ASN1_bytes objects, we are to collapse
+ * them into the one structure that is then returned */
+/* There have been a few bug fixes for this function from
+ * Paul Keogh <paul.keogh@sse.ie>, many thanks to him */
+static int asn1_collate_primitive(ASN1_STRING *a, ASN1_const_CTX *c)
+ {
+ ASN1_STRING *os=NULL;
+ BUF_MEM b;
+ int num;
+
+ b.length=0;
+ b.max=0;
+ b.data=NULL;
+
+ if (a == NULL)
+ {
+ c->error=ERR_R_PASSED_NULL_PARAMETER;
+ goto err;
+ }
+
+ num=0;
+ for (;;)
+ {
+ if (c->inf & 1)
+ {
+ c->eos=ASN1_const_check_infinite_end(&c->p,
+ (long)(c->max-c->p));
+ if (c->eos) break;
+ }
+ else
+ {
+ if (c->slen <= 0) break;
+ }
+
+ c->q=c->p;
+ if (d2i_ASN1_bytes(&os,&c->p,c->max-c->p,c->tag,c->xclass)
+ == NULL)
+ {
+ c->error=ERR_R_ASN1_LIB;
+ goto err;
+ }
+
+ if (!BUF_MEM_grow_clean(&b,num+os->length))
+ {
+ c->error=ERR_R_BUF_LIB;
+ goto err;
+ }
+ memcpy(&(b.data[num]),os->data,os->length);
+ if (!(c->inf & 1))
+ c->slen-=(c->p-c->q);
+ num+=os->length;
+ }
+
+ if (!asn1_const_Finish(c)) goto err;
+
+ a->length=num;
+ if (a->data != NULL) OPENSSL_free(a->data);
+ a->data=(unsigned char *)b.data;
+ if (os != NULL) ASN1_STRING_free(os);
+ return(1);
+err:
+ ASN1err(ASN1_F_ASN1_COLLATE_PRIMITIVE,c->error);
+ if (os != NULL) ASN1_STRING_free(os);
+ if (b.data != NULL) OPENSSL_free(b.data);
+ return(0);
+ }
+
projects / cassiopeia.git / blobdiff