44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
#include "packet.h"
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#define PKT_HEADER_ELEMENTS 2
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pkt_handler pkt_handlers[] = {
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{.id = MSG_ID_01_WELCOME, .handler = pkt_01_welcome_handler},
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};
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int32_t pkt_header_encode(pkt_header *table) {
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return 0;
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}
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int32_t pkt_header_decode(pkt_header *table, void *data, size_t datalen) {
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cw_unpack_context uc = {0};
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cw_unpack_context_init(&uc, data, datalen, 0);
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cw_unpack_next(&uc);
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if (uc.item.type != CWP_ITEM_ARRAY || uc.item.as.array.size != PKT_HEADER_ELEMENTS) {
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return -1;//todo: error
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}
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cw_unpack_next(&uc);
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if (uc.item.type != CWP_ITEM_POSITIVE_INTEGER || uc.item.as.u64 > UINT16_MAX) {
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return -1; // invalid packet id id
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}
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uint16_t pkt_id = (uint16_t)uc.item.as.u64;
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cw_unpack_next(&uc);
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const void *packed_blob = uc.item.as.bin.start;
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uin32_t packed_size = uc.item.as.bind.length;
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table->id = pkt_id;
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table->data = packed_blob;
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table->datalen = packed_size;
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table->ok = 1;
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if (uc.return_code != CWP_RC_OK) return -1; // unpacking failed somwwhere
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cw_unpack_next(&uc);
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if (uc.return_code != CWP_RC_END_OF_INPUT) return -1; // not finished yet but should be?
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return 0;
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}
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