1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/*-
* Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
* Redistribution and modifications are permitted subject to BSD license.
*/
#include <constr_SEQUENCE_OF.h>
#include <asn_SEQUENCE_OF.h>
/*
* The DER encoder of the SEQUENCE OF type.
*/
der_enc_rval_t
SEQUENCE_OF_encode_der(asn1_TYPE_descriptor_t *sd, void *ptr,
int tag_mode, ber_tlv_tag_t tag,
asn_app_consume_bytes_f *cb, void *app_key) {
asn1_SET_OF_specifics_t *specs = sd->specifics;
asn1_SET_OF_element_t *elm = specs->element;
A_SEQUENCE_OF(void) *list = ptr;
size_t computed_size = 0;
ssize_t encoding_size = 0;
der_enc_rval_t erval;
int edx;
ASN_DEBUG("Estimating size of SEQUENCE OF %s", sd->name);
/*
* Gather the length of the underlying members sequence.
*/
for(edx = 0; edx < list->count; edx++) {
void *memb_ptr = list->array[edx];
erval = elm->type->der_encoder(elm->type, memb_ptr,
0, elm->tag,
0, 0);
if(erval.encoded == -1)
return erval;
computed_size += erval.encoded;
}
/*
* Encode the TLV for the sequence itself.
*/
encoding_size = der_write_tags(sd, computed_size, tag_mode, tag,
cb, app_key);
if(encoding_size == -1) {
erval.encoded = -1;
erval.failed_type = sd;
erval.structure_ptr = ptr;
return erval;
}
computed_size += encoding_size;
if(!cb) {
erval.encoded = computed_size;
return erval;
}
ASN_DEBUG("Encoding members of SEQUENCE OF %s", sd->name);
/*
* Encode all members.
*/
for(edx = 0; edx < list->count; edx++) {
void *memb_ptr = list->array[edx];
erval = elm->type->der_encoder(elm->type, memb_ptr,
0, elm->tag,
cb, app_key);
if(erval.encoded == -1)
return erval;
encoding_size += erval.encoded;
}
if(computed_size != (size_t)encoding_size) {
/*
* Encoded size is not equal to the computed size.
*/
erval.encoded = -1;
erval.failed_type = sd;
erval.structure_ptr = ptr;
} else {
erval.encoded = computed_size;
}
return erval;
}
|
