| | |
| | | #include "os/os.h" |
| | | #include "pc-identifiers.h" |
| | | #include <stdlib.h> |
| | | #include <string.h> |
| | | #include <stdbool.h> |
| | | #include "base/base64.h" |
| | | |
| | |
| | | } else { |
| | | required_id_size = disk_num; |
| | | } |
| | | int defined_identifiers = *num_identifiers; |
| | | *num_identifiers = required_id_size; |
| | | if (identifiers == NULL) { |
| | | *num_identifiers = required_id_size; |
| | | return OK; |
| | | } else if (*num_identifiers < required_id_size) { |
| | | *num_identifiers = required_id_size; |
| | | } else if (required_id_size > defined_identifiers) { |
| | | return BUFFER_TOO_SMALL; |
| | | } |
| | | diskInfos = (DiskInfo*) malloc(disk_num * sizeof(DiskInfo)); |
| | |
| | | adapterInfos = (AdapterInfo*) malloc(adapter_num * sizeof(AdapterInfo)); |
| | | result_adapterInfos = getAdapterInfos(adapterInfos, &adapter_num); |
| | | for (i = 0; i < disk_num; i++) { |
| | | for (j = 0; j < adapter_num; i++) { |
| | | for (j = 0; j < adapter_num; j++) { |
| | | for (k = 0; k < 6; k++) |
| | | identifiers[i * adapter_num + j][k] = |
| | | diskInfos[i].disk_sn[k + 2] |
| | |
| | | if (result_adapterInfos != OK) { |
| | | return result_adapterInfos; |
| | | } |
| | | |
| | | int defined_adapters = *num_identifiers; |
| | | *num_identifiers = adapters; |
| | | if (identifiers == NULL) { |
| | | *num_identifiers = adapters; |
| | | return OK; |
| | | } else if (*num_identifiers < adapters) { |
| | | *num_identifiers = adapters; |
| | | } else if (adapters > defined_adapters) { |
| | | return BUFFER_TOO_SMALL; |
| | | } |
| | | |
| | | adapterInfos = (AdapterInfo*) malloc(adapters * sizeof(AdapterInfo)); |
| | | result_adapterInfos = getAdapterInfos(adapterInfos, &adapters); |
| | | for (j = 0; j < adapters; i++) { |
| | |
| | | unsigned int * num_identifiers, bool use_label) { |
| | | size_t disk_num; |
| | | FUNCTION_RETURN result_diskinfos; |
| | | unsigned int required_id_size, i, k; |
| | | unsigned int i, k; |
| | | DiskInfo * diskInfos; |
| | | |
| | | result_diskinfos = getDiskInfos(NULL, &disk_num); |
| | | if (result_diskinfos != OK) { |
| | | return result_diskinfos; |
| | | } |
| | | |
| | | int defined_identifiers = *num_identifiers; |
| | | *num_identifiers = disk_num; |
| | | if (identifiers == NULL) { |
| | | *num_identifiers = disk_num; |
| | | return OK; |
| | | } else if (*num_identifiers < disk_num) { |
| | | *num_identifiers = disk_num; |
| | | } else if (disk_num > defined_identifiers) { |
| | | return BUFFER_TOO_SMALL; |
| | | } |
| | | |
| | | diskInfos = (DiskInfo*) malloc(disk_num * sizeof(DiskInfo)); |
| | | result_diskinfos = getDiskInfos(diskInfos, &disk_num); |
| | | |
| | |
| | | * for instance a machine with more than one disk and one network interface has |
| | | * usually multiple identifiers. |
| | | * |
| | | * First 4 bit of each pc identifier are reserved 3 for the type of strategy |
| | | * used in calculation and 1 for parity checks (not implemented here) |
| | | * |
| | | * @param identifiers |
| | | * @param array_size |
| | | * @param |
| | |
| | | FUNCTION_RETURN generate_pc_id(PcIdentifier * identifiers, |
| | | unsigned int * array_size, IDENTIFICATION_STRATEGY strategy) { |
| | | FUNCTION_RETURN result; |
| | | unsigned int i; |
| | | unsigned int i, j; |
| | | const unsigned int original_array_size = *array_size; |
| | | unsigned char strategy_num; |
| | | switch (strategy) { |
| | | case DEFAULT: |
| | |
| | | strategy_num = strategy << 5; |
| | | for (i = 0; i < *array_size; i++) { |
| | | //encode strategy in the first three bits of the pc_identifier |
| | | identifiers[i][0] = (identifiers[i][0] & 31) | strategy_num; |
| | | identifiers[i][0] = (identifiers[i][0] & 15) | strategy_num; |
| | | } |
| | | //fill array if larger |
| | | for (i = *array_size; i < original_array_size; i++) { |
| | | identifiers[i][0] = STRATEGY_UNKNOWN; |
| | | for (j = 1; j < sizeof(PcIdentifier); j++) { |
| | | identifiers[i][j] = 42; //padding |
| | | } |
| | | } |
| | | } |
| | | return result; |
| | | } |
| | | |
| | | FUNCTION_RETURN encode_pc_id(PcIdentifier identifier1, PcIdentifier identifier2, |
| | | UserPcIdentifier* pc_identifier_out) { |
| | | char *MakeCRC(char *BitString) { |
| | | static char Res[3]; // CRC Result |
| | | char CRC[2]; |
| | | int i; |
| | | char DoInvert; |
| | | |
| | | for (i = 0; i < 2; ++i) |
| | | CRC[i] = 0; // Init before calculation |
| | | |
| | | for (i = 0; i < strlen(BitString); ++i) { |
| | | DoInvert = ('1' == BitString[i]) ^ CRC[1]; // XOR required? |
| | | |
| | | CRC[1] = CRC[0]; |
| | | CRC[0] = DoInvert; |
| | | } |
| | | |
| | | for (i = 0; i < 2; ++i) |
| | | Res[1 - i] = CRC[i] ? '1' : '0'; // Convert binary to ASCII |
| | | Res[2] = 0; // Set string terminator |
| | | |
| | | return (Res); |
| | | } |
| | | |
| | | FUNCTION_RETURN parity_check_id(UserPcIdentifier pc_identifier) { |
| | | FUNCTION_RETURN encode_pc_id(PcIdentifier identifier1, PcIdentifier identifier2, |
| | | PcSignature pc_identifier_out) { |
| | | //TODO base62 encoding, now uses base64 |
| | | PcIdentifier concat_identifiers[2]; |
| | | int b64_size = 0; |
| | | size_t concatIdentifiersSize = sizeof(PcIdentifier) * 2; |
| | | //concat_identifiers = (PcIdentifier *) malloc(concatIdentifiersSize); |
| | | memcpy(&concat_identifiers[0], identifier1, sizeof(PcIdentifier)); |
| | | memcpy(&concat_identifiers[1], identifier2, sizeof(PcIdentifier)); |
| | | char* b64_data = base64(concat_identifiers, concatIdentifiersSize, |
| | | &b64_size); |
| | | if (b64_size > sizeof(PcSignature)) { |
| | | return BUFFER_TOO_SMALL; |
| | | } |
| | | sprintf(pc_identifier_out, "%.4s-%.4s-%.4s-%.4s", &b64_data[0], |
| | | &b64_data[4], &b64_data[8], &b64_data[12]); |
| | | //free(concat_identifiers); |
| | | free(b64_data); |
| | | return OK; |
| | | } |
| | | |
| | | FUNCTION_RETURN parity_check_id(PcSignature pc_identifier) { |
| | | return OK; |
| | | } |
| | | |
| | | FUNCTION_RETURN generate_user_pc_signature(PcSignature identifier_out, |
| | | IDENTIFICATION_STRATEGY strategy) { |
| | | FUNCTION_RETURN result; |
| | | PcIdentifier* identifiers; |
| | | unsigned int req_buffer_size = 0; |
| | | result = generate_pc_id(NULL, &req_buffer_size, strategy); |
| | | if (result != OK) { |
| | | return result; |
| | | } |
| | | if (req_buffer_size == 0) { |
| | | return ERROR; |
| | | } |
| | | req_buffer_size = req_buffer_size < 2 ? 2 : req_buffer_size; |
| | | identifiers = (PcIdentifier *) malloc( |
| | | sizeof(PcIdentifier) * req_buffer_size); |
| | | result = generate_pc_id(identifiers, &req_buffer_size, strategy); |
| | | if (result != OK) { |
| | | free(identifiers); |
| | | return result; |
| | | } |
| | | result = encode_pc_id(identifiers[0], identifiers[1], identifier_out); |
| | | free(identifiers); |
| | | return result; |
| | | } |
| | | |
| | | /** |
| | |
| | | * @param str_code: the code in the string format XXXX-XXXX-XXXX-XXXX |
| | | * @return |
| | | */ |
| | | static FUNCTION_RETURN decode_pc_id(PcIdentifier* identifier1_out, |
| | | PcIdentifier* identifier2_out, UserPcIdentifier str_code) { |
| | | static FUNCTION_RETURN decode_pc_id(PcIdentifier identifier1_out, |
| | | PcIdentifier identifier2_out, PcSignature pc_signature_in) { |
| | | //TODO base62 encoding, now uses base64 |
| | | |
| | | unsigned char * concat_identifiers; |
| | | char base64ids[17]; |
| | | int identifiers_size; |
| | | |
| | | sscanf(pc_signature_in, "%.4s-%.4s-%.4s-%.4s", &base64ids[0], &base64ids[4], |
| | | &base64ids[8], &base64ids[12]); |
| | | concat_identifiers = unbase64(base64ids, 16, |
| | | &identifiers_size); |
| | | if (identifiers_size > sizeof(PcIdentifier) * 2) { |
| | | return BUFFER_TOO_SMALL; |
| | | } |
| | | memcpy(identifier1_out, concat_identifiers, sizeof(PcIdentifier)); |
| | | memcpy(identifier2_out, concat_identifiers + sizeof(PcIdentifier), |
| | | sizeof(PcIdentifier)); |
| | | free(concat_identifiers); |
| | | return OK; |
| | | } |
| | | |
| | | static IDENTIFICATION_STRATEGY strategy_from_pc_id(PcIdentifier identifier) { |
| | | return (IDENTIFICATION_STRATEGY) identifier[0] >> 5; |
| | | } |
| | | |
| | | EVENT_TYPE validate_user_pc_identifier(UserPcIdentifier str_code) { |
| | | EVENT_TYPE validate_pc_signature(PcSignature str_code) { |
| | | PcIdentifier user_identifiers[2]; |
| | | FUNCTION_RETURN result; |
| | | IDENTIFICATION_STRATEGY previous_strategy_id, current_strategy_id; |
| | | PcIdentifier* calculated_identifiers; |
| | | size_t calc_identifiers_size; |
| | | unsigned int calc_identifiers_size; |
| | | int i, j; |
| | | bool found; |
| | | //bool found; |
| | | |
| | | result = decode_pc_id(&user_identifiers[0], &user_identifiers[1], str_code); |
| | | result = decode_pc_id(user_identifiers[0], user_identifiers[1], str_code); |
| | | if (result != OK) { |
| | | return result; |
| | | } |
| | | previous_strategy_id = STRATEGY_UNKNOWN; |
| | | found = false; |
| | | //found = false; |
| | | for (i = 0; i < 2; i++) { |
| | | current_strategy_id = strategy_from_pc_id(user_identifiers[i]); |
| | | if (current_strategy_id == STRATEGY_UNKNOWN) { |