1 /* crypto/asn1/a_set.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
61 #include <openssl/asn1_mac.h>
65 unsigned char *pbData
;
70 * This function compares two elements of SET_OF block
72 static int SetBlobCmp(const void *elem1
, const void *elem2
)
74 const MYBLOB
*b1
= (const MYBLOB
*)elem1
;
75 const MYBLOB
*b2
= (const MYBLOB
*)elem2
;
78 r
= memcmp(b1
->pbData
, b2
->pbData
,
79 b1
->cbData
< b2
->cbData
? b1
->cbData
: b2
->cbData
);
82 return b1
->cbData
-b2
->cbData
;
85 /* int is_set: if TRUE, then sort the contents (i.e. it isn't a SEQUENCE) */
86 int i2d_ASN1_SET(STACK
*a
, unsigned char **pp
, int (*func
)(), int ex_tag
,
87 int ex_class
, int is_set
)
92 unsigned char *pStart
, *pTempMem
;
96 if (a
== NULL
) return(0);
97 for (i
=sk_num(a
)-1; i
>=0; i
--)
98 ret
+=func(sk_value(a
,i
),NULL
);
99 r
=ASN1_object_size(1,ret
,ex_tag
);
100 if (pp
== NULL
) return(r
);
103 ASN1_put_object(&p
,1,ret
,ex_tag
,ex_class
);
105 /* Modified by gp@nsj.co.jp */
106 /* And then again by Ben */
107 /* And again by Steve */
109 if(!is_set
|| (sk_num(a
) < 2))
111 for (i
=0; i
<sk_num(a
); i
++)
112 func(sk_value(a
,i
),&p
);
118 pStart
= p
; /* Catch the beg of Setblobs*/
119 rgSetBlob
= (MYBLOB
*)OPENSSL_malloc( sk_num(a
) * sizeof(MYBLOB
)); /* In this array
120 we will store the SET blobs */
122 for (i
=0; i
<sk_num(a
); i
++)
124 rgSetBlob
[i
].pbData
= p
; /* catch each set encode blob */
125 func(sk_value(a
,i
),&p
);
126 rgSetBlob
[i
].cbData
= p
- rgSetBlob
[i
].pbData
; /* Length of this
131 totSize
= p
- pStart
; /* This is the total size of all set blobs */
133 /* Now we have to sort the blobs. I am using a simple algo.
134 *Sort ptrs *Copy to temp-mem *Copy from temp-mem to user-mem*/
135 qsort( rgSetBlob
, sk_num(a
), sizeof(MYBLOB
), SetBlobCmp
);
136 pTempMem
= OPENSSL_malloc(totSize
);
138 /* Copy to temp mem */
140 for(i
=0; i
<sk_num(a
); ++i
)
142 memcpy(p
, rgSetBlob
[i
].pbData
, rgSetBlob
[i
].cbData
);
143 p
+= rgSetBlob
[i
].cbData
;
146 /* Copy back to user mem*/
147 memcpy(pStart
, pTempMem
, totSize
);
148 OPENSSL_free(pTempMem
);
149 OPENSSL_free(rgSetBlob
);
154 STACK
*d2i_ASN1_SET(STACK
**a
, unsigned char **pp
, long length
,
155 char *(*func
)(), void (*free_func
)(), int ex_tag
, int ex_class
)
160 if ((a
== NULL
) || ((*a
) == NULL
))
161 { if ((ret
=sk_new(NULL
)) == NULL
) goto err
; }
166 c
.max
=(length
== 0)?0:(c
.p
+length
);
168 c
.inf
=ASN1_get_object(&c
.p
,&c
.slen
,&c
.tag
,&c
.xclass
,c
.max
-c
.p
);
169 if (c
.inf
& 0x80) goto err
;
170 if (ex_class
!= c
.xclass
)
172 ASN1err(ASN1_F_D2I_ASN1_SET
,ASN1_R_BAD_CLASS
);
177 ASN1err(ASN1_F_D2I_ASN1_SET
,ASN1_R_BAD_TAG
);
180 if ((c
.slen
+c
.p
) > c
.max
)
182 ASN1err(ASN1_F_D2I_ASN1_SET
,ASN1_R_LENGTH_ERROR
);
185 /* check for infinite constructed - it can be as long
186 * as the amount of data passed to us */
187 if (c
.inf
== (V_ASN1_CONSTRUCTED
+1))
188 c
.slen
=length
+ *pp
-c
.p
;
195 if (M_ASN1_D2I_end_sequence()) break;
196 if ((s
=func(NULL
,&c
.p
,c
.slen
,c
.max
-c
.p
)) == NULL
)
198 ASN1err(ASN1_F_D2I_ASN1_SET
,ASN1_R_ERROR_PARSING_SET_ELEMENT
);
199 asn1_add_error(*pp
,(int)(c
.q
- *pp
));
202 if (!sk_push(ret
,s
)) goto err
;
204 if (a
!= NULL
) (*a
)=ret
;
208 if ((ret
!= NULL
) && ((a
== NULL
) || (*a
!= ret
)))
210 if (free_func
!= NULL
)
211 sk_pop_free(ret
,free_func
);