vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 1 | /*- |
| 2 | * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved. |
| 3 | * Redistribution and modifications are permitted subject to BSD license. |
| 4 | */ |
| 5 | #include <constr_SEQUENCE_OF.h> |
| 6 | #include <asn_SEQUENCE_OF.h> |
| 7 | |
| 8 | /* |
| 9 | * The DER encoder of the SEQUENCE OF type. |
| 10 | */ |
| 11 | der_enc_rval_t |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 12 | SEQUENCE_OF_encode_der(asn1_TYPE_descriptor_t *td, void *ptr, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 13 | int tag_mode, ber_tlv_tag_t tag, |
| 14 | asn_app_consume_bytes_f *cb, void *app_key) { |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 15 | asn1_TYPE_member_t *elm = td->elements; |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 16 | A_SEQUENCE_OF(void) *list; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 17 | size_t computed_size = 0; |
| 18 | ssize_t encoding_size = 0; |
| 19 | der_enc_rval_t erval; |
| 20 | int edx; |
| 21 | |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 22 | ASN_DEBUG("Estimating size of SEQUENCE OF %s", td->name); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 23 | |
| 24 | /* |
| 25 | * Gather the length of the underlying members sequence. |
| 26 | */ |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 27 | (void *)list = ptr; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 28 | for(edx = 0; edx < list->count; edx++) { |
| 29 | void *memb_ptr = list->array[edx]; |
| 30 | erval = elm->type->der_encoder(elm->type, memb_ptr, |
| 31 | 0, elm->tag, |
| 32 | 0, 0); |
| 33 | if(erval.encoded == -1) |
| 34 | return erval; |
| 35 | computed_size += erval.encoded; |
| 36 | } |
| 37 | |
| 38 | /* |
| 39 | * Encode the TLV for the sequence itself. |
| 40 | */ |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 41 | encoding_size = der_write_tags(td, computed_size, tag_mode, tag, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 42 | cb, app_key); |
| 43 | if(encoding_size == -1) { |
| 44 | erval.encoded = -1; |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 45 | erval.failed_type = td; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 46 | erval.structure_ptr = ptr; |
| 47 | return erval; |
| 48 | } |
| 49 | |
| 50 | computed_size += encoding_size; |
| 51 | if(!cb) { |
| 52 | erval.encoded = computed_size; |
| 53 | return erval; |
| 54 | } |
| 55 | |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 56 | ASN_DEBUG("Encoding members of SEQUENCE OF %s", td->name); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 57 | |
| 58 | /* |
| 59 | * Encode all members. |
| 60 | */ |
| 61 | for(edx = 0; edx < list->count; edx++) { |
| 62 | void *memb_ptr = list->array[edx]; |
| 63 | erval = elm->type->der_encoder(elm->type, memb_ptr, |
| 64 | 0, elm->tag, |
| 65 | cb, app_key); |
| 66 | if(erval.encoded == -1) |
| 67 | return erval; |
| 68 | encoding_size += erval.encoded; |
| 69 | } |
| 70 | |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 71 | if(computed_size != (size_t)encoding_size) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 72 | /* |
| 73 | * Encoded size is not equal to the computed size. |
| 74 | */ |
| 75 | erval.encoded = -1; |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 76 | erval.failed_type = td; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 77 | erval.structure_ptr = ptr; |
| 78 | } else { |
| 79 | erval.encoded = computed_size; |
| 80 | } |
| 81 | |
| 82 | return erval; |
| 83 | } |
| 84 | |