initial commit

1 files changed, 108 insertions, 0 deletions

diff --git a/hwid_dec.c b/hwid_dec.c
new file mode 100644
index 0000000..c426133
--- /dev/null
+++ b/hwid_dec.c
@@ -0,0 +1,108 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+
+struct __attribute__((packed)) HWID {
+    uint16_t size;
+    uint16_t version;
+    uint16_t instances[9];
+    uint16_t dock_or_PCMCIA;
+    uint16_t hashRAM;
+    uint16_t hashBIOS;
+    uint16_t instanceHashes[];
+};
+
+struct __attribute__((packed)) TIMEWEIGHT {
+    uint8_t num_weights;
+    struct __attribute__((packed)) Weight {
+        uint8_t type;
+        uint16_t weight;
+    } weight[];
+};
+
+const char *CLASS_NAMES[] = {
+    "CDROM",
+    "Hard Disk Controllers",
+    "Hard Disk Drives",
+    "Displays",
+    "SCSI Adapters",
+    "PCMCIA",
+    "Audio Adapters",
+    "Dock",
+    "Network Interface Cards",
+    "CPUs",
+    "Memory",
+    "UNUSED",
+    "BIOS",
+    "UNUSED",
+    "Mobile Broadband",
+    "Bluetooth Interfaces"
+};
+
+const char *HWID_NAMES[] = {
+    "CDROM / Mobile Broadband",
+    "Hard Disk Controllers",
+    "Hard Disk Drives",
+    "Displays",
+    "SCSI Adapters / Bluetooth Controllers",
+    "Audio Adapters",
+    "Unused",
+    "Network Interface Cards",
+    "CPUs"
+};
+
+void print_block(uint8_t *hw_block) {
+    uint32_t size = *(uint32_t *)hw_block;
+    uint16_t unknown = *(uint16_t *)(hw_block + 4);
+    unsigned instance_count = 0;
+
+    puts("Block Information:");
+    printf("Size    : [%08x]\n", size);
+    printf("Unknown : [%08x]\n", unknown);
+    puts("");
+
+    struct HWID *hwid = (struct HWID *)(hw_block + 6);
+    puts("HWID Information:");
+    printf("Size        : [%04x]\n", hwid->size);
+    printf("Version     : [%04x]\n", hwid->version);
+    for(size_t i = 0; i < 9; i++) {
+        instance_count += hwid->instances[i];
+        printf("Inst. (%02zx)  : [%04x] -> %s\n", i, hwid->instances[i], HWID_NAMES[i]);
+    }
+    printf("Dock/PCMCIA : [%04x]\n", hwid->dock_or_PCMCIA);
+    printf("RAM hash    : [%02x]\n", hwid->hashRAM);
+    printf("SMBIOS hash : [%04x]\n", hwid->hashBIOS);
+    for(size_t i = 0; i < instance_count; i++) {
+        printf("Hash (%02zx)   : [%04x] %s\n", i, hwid->instanceHashes[i], (hwid->instanceHashes[i] & 1) == 1 ? "[[Non-Removable]]" : "");
+    }
+    puts("");
+
+    struct TIMEWEIGHT *tw = (struct TIMEWEIGHT *) ((hw_block + 6) + hwid->size);
+    puts("Timeweight Information:");
+    printf("Weights     : [%02x]\n", tw->num_weights);
+
+    for(size_t i = 0; i < tw->num_weights; i++) {
+        printf("Weight (%02x) : [%04x] -> %s\n", tw->weight[i].type, tw->weight[i].weight, CLASS_NAMES[tw->weight[i].type]);
+    }
+
+}
+
+int main(int argc, char *argv[]) {
+
+    if(argc != 2) {
+        puts("Invalid parameters.\nUsages:\n\thwid file");
+        exit(1);
+    }
+    
+    FILE *fd = fopen(argv[1], "r");
+    fseek(fd, 0, SEEK_END);
+    long fsize = ftell(fd);
+    rewind(fd);
+
+    uint8_t *hw_block = malloc(fsize);
+    fread(hw_block, 1, fsize, fd);
+
+    print_block(hw_block);
+
+    return 0;
+}
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