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23 lines
727 B
C
23 lines
727 B
C
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#include "ncsd.h"
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u32 ValidateNcsdHeader(NcsdHeader* header) {
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u8 zeroes[16] = { 0 };
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if ((memcmp(header->magic, "NCSD", 4) != 0) || // check magic number
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(memcmp(header->partitions_fs_type, zeroes, 8) != 0)) // prevent detection of NAND images
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return 1;
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u32 data_units = 0;
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for (u32 i = 0; i < 8; i++) {
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NcchPartition* partition = header->partitions + i;
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if ((partition->offset == 0) && (partition->size == 0))
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continue;
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if (partition->offset < data_units)
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return 1; // overlapping partitions, failed
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data_units = partition->offset + partition->size;
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}
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if (data_units > header->size)
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return 1;
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return 0;
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}
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