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-rw-r--r--crypto/asn1/p7_lib.c299
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+/* crypto/asn1/p7_lib.c */
+/* Copyright (C) 1995-1997 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 "asn1_mac.h"
+#include "objects.h"
+
+/* ASN1err(ASN1_F_D2I_PKCS7,ASN1_R_BAD_PKCS7_CONTENT);
+ * ASN1err(ASN1_F_I2D_PKCS7,ASN1_R_BAD_PKCS7_TYPE);
+ * ASN1err(ASN1_F_PKCS7_NEW,ASN1_R_BAD_PKCS7_TYPE);
+ */
+
+int i2d_PKCS7(a,pp)
+PKCS7 *a;
+unsigned char **pp;
+ {
+ M_ASN1_I2D_vars(a);
+
+ if (a->asn1 != NULL)
+ {
+ if (pp == NULL)
+ return((int)a->length);
+ memcpy(*pp,a->asn1,(int)a->length);
+ *pp+=a->length;
+ return((int)a->length);
+ }
+
+ ret+=4; /* sequence, BER header plus '0 0' end padding */
+ M_ASN1_I2D_len(a->type,i2d_ASN1_OBJECT);
+ if (a->d.ptr != NULL)
+ {
+ ret+=4; /* explicit tag [ 0 ] BER plus '0 0' */
+ switch (OBJ_obj2nid(a->type))
+ {
+ case NID_pkcs7_data:
+ M_ASN1_I2D_len(a->d.data,i2d_ASN1_OCTET_STRING);
+ break;
+ case NID_pkcs7_signed:
+ M_ASN1_I2D_len(a->d.sign,i2d_PKCS7_SIGNED);
+ break;
+ case NID_pkcs7_enveloped:
+ M_ASN1_I2D_len(a->d.enveloped,i2d_PKCS7_ENVELOPE);
+ break;
+ case NID_pkcs7_signedAndEnveloped:
+ M_ASN1_I2D_len(a->d.signed_and_enveloped,
+ i2d_PKCS7_SIGN_ENVELOPE);
+ break;
+ case NID_pkcs7_digest:
+ M_ASN1_I2D_len(a->d.digest,i2d_PKCS7_DIGEST);
+ break;
+ case NID_pkcs7_encrypted:
+ M_ASN1_I2D_len(a->d.encrypted,i2d_PKCS7_ENCRYPT);
+ break;
+ default:
+ break;
+ }
+ }
+ r=ret;
+ if (pp == NULL) return(r);
+ p= *pp;
+ M_ASN1_I2D_INF_seq_start(V_ASN1_SEQUENCE,V_ASN1_UNIVERSAL);
+ M_ASN1_I2D_put(a->type,i2d_ASN1_OBJECT);
+
+ if (a->d.ptr != NULL)
+ {
+ M_ASN1_I2D_INF_seq_start(0,V_ASN1_CONTEXT_SPECIFIC);
+ switch (OBJ_obj2nid(a->type))
+ {
+ case NID_pkcs7_data:
+ M_ASN1_I2D_put(a->d.data,i2d_ASN1_OCTET_STRING);
+ break;
+ case NID_pkcs7_signed:
+ M_ASN1_I2D_put(a->d.sign,i2d_PKCS7_SIGNED);
+ break;
+ case NID_pkcs7_enveloped:
+ M_ASN1_I2D_put(a->d.enveloped,i2d_PKCS7_ENVELOPE);
+ break;
+ case NID_pkcs7_signedAndEnveloped:
+ M_ASN1_I2D_put(a->d.signed_and_enveloped,
+ i2d_PKCS7_SIGN_ENVELOPE);
+ break;
+ case NID_pkcs7_digest:
+ M_ASN1_I2D_put(a->d.digest,i2d_PKCS7_DIGEST);
+ break;
+ case NID_pkcs7_encrypted:
+ M_ASN1_I2D_put(a->d.encrypted,i2d_PKCS7_ENCRYPT);
+ break;
+ default:
+ break;
+ }
+ M_ASN1_I2D_INF_seq_end();
+ }
+ M_ASN1_I2D_INF_seq_end();
+ M_ASN1_I2D_finish();
+ }
+
+PKCS7 *d2i_PKCS7(a,pp,length)
+PKCS7 **a;
+unsigned char **pp;
+long length;
+ {
+ M_ASN1_D2I_vars(a,PKCS7 *,PKCS7_new);
+
+ if ((a != NULL) && ((*a) != NULL))
+ {
+ if ((*a)->asn1 != NULL)
+ {
+ Free((char *)(*a)->asn1);
+ (*a)->asn1=NULL;
+ }
+ (*a)->length=0;
+ }
+
+ M_ASN1_D2I_Init();
+ M_ASN1_D2I_start_sequence();
+ M_ASN1_D2I_get(ret->type,d2i_ASN1_OBJECT);
+ if (!M_ASN1_D2I_end_sequence())
+ {
+ int Tinf,Ttag,Tclass;
+ long Tlen;
+
+ if (M_ASN1_next != (V_ASN1_CONSTRUCTED|
+ V_ASN1_CONTEXT_SPECIFIC|0))
+ {
+ c.error=ASN1_R_BAD_PKCS7_CONTENT;
+ goto err;
+ }
+
+ ret->detached=0;
+
+ c.q=c.p;
+ Tinf=ASN1_get_object(&c.p,&Tlen,&Ttag,&Tclass,
+ (c.inf & 1)?(length+ *pp-c.q):c.slen);
+ if (Tinf & 0x80) goto err;
+ c.slen-=(c.p-c.q);
+
+ switch (OBJ_obj2nid(ret->type))
+ {
+ case NID_pkcs7_data:
+ M_ASN1_D2I_get(ret->d.data,d2i_ASN1_OCTET_STRING);
+ break;
+ case NID_pkcs7_signed:
+ M_ASN1_D2I_get(ret->d.sign,d2i_PKCS7_SIGNED);
+ if (ret->d.sign->contents->d.ptr == NULL)
+ ret->detached=1;
+ break;
+ case NID_pkcs7_enveloped:
+ M_ASN1_D2I_get(ret->d.enveloped,d2i_PKCS7_ENVELOPE);
+ break;
+ case NID_pkcs7_signedAndEnveloped:
+ M_ASN1_D2I_get(ret->d.signed_and_enveloped,
+ d2i_PKCS7_SIGN_ENVELOPE);
+ break;
+ case NID_pkcs7_digest:
+ M_ASN1_D2I_get(ret->d.digest,d2i_PKCS7_DIGEST);
+ break;
+ case NID_pkcs7_encrypted:
+ M_ASN1_D2I_get(ret->d.encrypted,d2i_PKCS7_ENCRYPT);
+ break;
+ default:
+ c.error=ASN1_R_BAD_PKCS7_TYPE;
+ goto err;
+ break;
+ }
+ if (Tinf == (1|V_ASN1_CONSTRUCTED))
+ {
+ if (!ASN1_check_infinite_end(&c.p,c.slen))
+ {
+ c.error=ASN1_R_MISSING_EOS;
+ goto err;
+ }
+ }
+ }
+ else
+ ret->detached=1;
+
+ M_ASN1_D2I_Finish(a,PKCS7_free,ASN1_F_D2I_PKCS7);
+ }
+
+PKCS7 *PKCS7_new()
+ {
+ PKCS7 *ret=NULL;
+
+ M_ASN1_New_Malloc(ret,PKCS7);
+ ret->type=ASN1_OBJECT_new();
+ ret->asn1=NULL;
+ ret->length=0;
+ ret->detached=0;
+ ret->d.ptr=NULL;
+ return(ret);
+ M_ASN1_New_Error(ASN1_F_PKCS7_NEW);
+ }
+
+void PKCS7_free(a)
+PKCS7 *a;
+ {
+ if (a == NULL) return;
+
+ PKCS7_content_free(a);
+ if (a->type != NULL)
+ {
+ ASN1_OBJECT_free(a->type);
+ }
+ Free((char *)(char *)a);
+ }
+
+void PKCS7_content_free(a)
+PKCS7 *a;
+ {
+ if (a->asn1 != NULL) Free((char *)a->asn1);
+
+ if (a->d.ptr != NULL)
+ {
+ if (a->type == NULL) return;
+
+ switch (OBJ_obj2nid(a->type))
+ {
+ case NID_pkcs7_data:
+ ASN1_OCTET_STRING_free(a->d.data);
+ break;
+ case NID_pkcs7_signed:
+ PKCS7_SIGNED_free(a->d.sign);
+ break;
+ case NID_pkcs7_enveloped:
+ PKCS7_ENVELOPE_free(a->d.enveloped);
+ break;
+ case NID_pkcs7_signedAndEnveloped:
+ PKCS7_SIGN_ENVELOPE_free(a->d.signed_and_enveloped);
+ break;
+ case NID_pkcs7_digest:
+ PKCS7_DIGEST_free(a->d.digest);
+ break;
+ case NID_pkcs7_encrypted:
+ PKCS7_ENCRYPT_free(a->d.encrypted);
+ break;
+ default:
+ /* MEMORY LEAK */
+ break;
+ }
+ }
+ a->d.ptr=NULL;
+ }
+
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