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6a16e94808
- The standard defines 64 bits for all flags. - Also see https://www.rfc-editor.org/rfc/rfc9171.html#section-4.2.3-6: "Bundle processing control flags that are unrecognized MUST be ignored, as future definitions of additional flags might not be integrated simultaneously into the Bundle Protocol implementations operating at all nodes." - Similar for blocks: https://www.rfc-editor.org/rfc/rfc9171.html#section-4.2.4-2 - The primary block length is calculated internally based on the bundle length -- to prevent overflow, we use 64 bit here as well. (We might introduce additional checks in the future, but the input being CBOR with the validations in the BPv7 parser should already work to only allow a "sane" primary block length. For BPv6 we enforce still parsing only 16 bits for it.) - Also define a bit mask for BPv6 flags (`BP_V6_FLAGS`) Closes: #247, #237 Signed-off-by: Felix Walter <felix.walter@d3tn.com>
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
// SPDX-License-Identifier: BSD-3-Clause OR Apache-2.0
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#include "bundle6/create.h"
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#include "ud3tn/bundle.h"
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#include "ud3tn/common.h"
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#include "ud3tn/eid.h"
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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struct bundle *bundle6_create_local(
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void *payload, size_t payload_length,
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const struct eid source, const struct eid destination, const struct eid report_to,
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uint64_t creation_time_ms, uint64_t sequence_number,
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uint64_t lifetime_ms, uint64_t proc_flags)
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{
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if (!payload)
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return NULL;
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if (eid_is_error(source) || eid_is_error(destination) || eid_is_error(report_to)) {
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free(payload);
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return NULL;
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}
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struct bundle *bundle = bundle_init();
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if (bundle == NULL) {
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free(payload);
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return NULL;
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}
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bundle->protocol_version = 0x6;
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bundle->proc_flags = proc_flags | BUNDLE_V6_FLAG_SINGLETON_ENDPOINT;
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// Creation time
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bundle->creation_timestamp_ms = creation_time_ms;
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bundle->sequence_number = sequence_number;
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bundle->lifetime_ms = lifetime_ms;
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// Create payload block and block list
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bundle->payload_block = bundle_block_create(BUNDLE_BLOCK_TYPE_PAYLOAD);
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bundle->payload_block->flags = BUNDLE_V6_BLOCK_FLAG_LAST_BLOCK;
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bundle->blocks = bundle_block_entry_create(bundle->payload_block);
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if (bundle->payload_block == NULL || bundle->blocks == NULL)
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goto fail;
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bundle->source = eid_dup(source);
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if (eid_is_error(bundle->source))
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goto fail;
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bundle->destination = eid_dup(destination);
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if (eid_is_error(bundle->destination))
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goto fail; // bundle_free takes care of source
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bundle->report_to = eid_dup(report_to);
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if (eid_is_error(bundle->report_to))
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goto fail; // bundle_free takes care of source and destination
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bundle->destination_str = eid_to_string(bundle->destination);
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bundle->source_str = eid_to_string(bundle->source);
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bundle->report_to_str = eid_to_string(bundle->report_to);
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bundle->current_custodian = eid_get_null();
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bundle->payload_block->data = payload;
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bundle->payload_block->length = payload_length;
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if (bundle_recalculate_header_length(bundle) == UD3TN_FAIL) {
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bundle->payload_block->data = NULL; // prevent double-free
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goto fail;
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}
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return bundle;
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fail:
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free(payload);
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bundle_free(bundle);
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return NULL;
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}
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