From 55f87d90a521f73c11408383bfc3fc7d84cc70ff Mon Sep 17 00:00:00 2001
From: open-license-manager <rillf@maildrop.cc>
Date: 周五, 01 8月 2014 23:52:41 +0800
Subject: [PATCH] new default identification method
---
src/library/pc-identifiers.c | 285 ++++++++++++++++++++++++++++++++++++++++++++------------
1 files changed, 222 insertions(+), 63 deletions(-)
diff --git a/src/library/pc-identifiers.c b/src/library/pc-identifiers.c
index e60a5b0..e674d77 100644
--- a/src/library/pc-identifiers.c
+++ b/src/library/pc-identifiers.c
@@ -8,74 +8,114 @@
#include "os/os.h"
#include "pc-identifiers.h"
#include <stdlib.h>
+#include <string.h>
#include <stdbool.h>
#include "base/base64.h"
+#include <valgrind/memcheck.h>
static FUNCTION_RETURN generate_default_pc_id(PcIdentifier * identifiers,
unsigned int * num_identifiers) {
- size_t adapter_num, disk_num;
- FUNCTION_RETURN result_adapterInfos, result_diskinfos;
- unsigned int required_id_size, i, j, k;
+ size_t adapter_num, disk_num, plat_spec_id;
+ FUNCTION_RETURN result_adapterInfos, result_diskinfos, result_plat_spec;
+ unsigned int required_id_size, current_identifier, i, j, k;
DiskInfo * diskInfos;
AdapterInfo *adapterInfos;
+ required_id_size = 0;
+ //just calculate the number of required identifiers
+ result_plat_spec = generate_platform_specific_pc_id(NULL, &plat_spec_id);
+ if (result_plat_spec == OK) {
+ required_id_size += 1;
+ }
result_adapterInfos = getAdapterInfos(NULL, &adapter_num);
- if (result_adapterInfos != OK) {
- //call generate_disk_pc_id;
- return result_adapterInfos;
- }
result_diskinfos = getDiskInfos(NULL, &disk_num);
- if (result_diskinfos == OK) {
- required_id_size = disk_num * adapter_num;
- } else {
- required_id_size = disk_num;
+ if (result_diskinfos == OK && result_adapterInfos == OK) {
+ required_id_size += disk_num * adapter_num;
+ } else if (result_adapterInfos == OK) {
+ required_id_size += adapter_num;
+ } else if (result_diskinfos == OK) {
+ required_id_size += disk_num;
}
+ int defined_identifiers = *num_identifiers;
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));
- result_diskinfos = getDiskInfos(diskInfos, &disk_num);
- 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 (k = 0; k < 6; k++)
- identifiers[i * adapter_num + j][k] =
- diskInfos[i].disk_sn[k + 2]
- ^ adapterInfos[j].mac_address[k + 2];
+
+ //calculate the identifiers
+ current_identifier = 0;
+ if (result_plat_spec == OK) {
+ generate_platform_specific_pc_id(identifiers, 1);
+ current_identifier += 1;
+ }
+ if (result_diskinfos == OK && result_adapterInfos == OK) {
+ diskInfos = (DiskInfo*) malloc(disk_num * sizeof(DiskInfo));
+ result_diskinfos = getDiskInfos(diskInfos, &disk_num);
+ 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; j++) {
+ if (current_identifier > defined_identifiers) {
+ break;
+ }
+ for (k = 0; k < 6; k++) {
+ identifiers[current_identifier][k] = diskInfos[i].disk_sn[k
+ + 2] ^ adapterInfos[j].mac_address[k + 2];
+ }
+ encodeStrategy(identifiers[current_identifier], DEFAULT);
+ current_identifier++;
+ }
}
+ free(diskInfos);
+ free(adapterInfos);
+ } else if (result_adapterInfos == OK) {
+ return generate_ethernet_pc_id(&identifiers[current_identifier],
+ defined_identifiers-current_identifier, true);
+ } else if (result_diskinfos == OK) {
+ return generate_disk_pc_id(&identifiers[current_identifier],
+ defined_identifiers-current_identifier, false);
}
- free(diskInfos);
- free(adapterInfos);
return OK;
+}
+
+static void encodeStrategy(PcIdentifier * identifier,
+ IDENTIFICATION_STRATEGY strategy) {
+ unsigned char strategy_num = strategy << 5;
+ identifier[0] = (identifier[0] & 15) | strategy_num;
+
+}
+
+static FUNCTION_RETURN generate_platform_specific_pc_id(
+ PcIdentifier * identifiers, unsigned int * num_identifiers) {
+
}
static FUNCTION_RETURN generate_ethernet_pc_id(PcIdentifier * identifiers,
unsigned int * num_identifiers, bool use_mac) {
size_t adapters;
FUNCTION_RETURN result_adapterInfos;
- unsigned int i, j, k;
+ unsigned int j, k;
AdapterInfo *adapterInfos;
result_adapterInfos = getAdapterInfos(NULL, &adapters);
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++) {
+ for (j = 0; j < adapters; j++) {
for (k = 0; k < 6; k++)
if (use_mac) {
identifiers[j][k] = adapterInfos[j].mac_address[k + 2];
@@ -95,31 +135,52 @@
static FUNCTION_RETURN generate_disk_pc_id(PcIdentifier * identifiers,
unsigned int * num_identifiers, bool use_label) {
- size_t disk_num;
+ size_t disk_num, available_disk_info = 0;
FUNCTION_RETURN result_diskinfos;
- unsigned int required_id_size, i, k;
+ unsigned int i, j;
+ char firstChar;
DiskInfo * diskInfos;
result_diskinfos = getDiskInfos(NULL, &disk_num);
if (result_diskinfos != OK) {
return result_diskinfos;
}
+ diskInfos = (DiskInfo*) malloc(disk_num * sizeof(DiskInfo));
+//memset(diskInfos,0,disk_num * sizeof(DiskInfo));
+ result_diskinfos = getDiskInfos(diskInfos, &disk_num);
+ if (result_diskinfos != OK) {
+ free(diskInfos);
+ return result_diskinfos;
+ }
+ for (i = 0; i < disk_num; i++) {
+ firstChar = use_label ? diskInfos[i].label[0] : diskInfos[i].disk_sn[0];
+ available_disk_info += firstChar == 0 ? 0 : 1;
+ }
+
+ int defined_identifiers = *num_identifiers;
+ *num_identifiers = available_disk_info;
if (identifiers == NULL) {
- *num_identifiers = disk_num;
+ free(diskInfos);
return OK;
- } else if (*num_identifiers < disk_num) {
- *num_identifiers = disk_num;
+ } else if (available_disk_info > defined_identifiers) {
+ free(diskInfos);
return BUFFER_TOO_SMALL;
}
- diskInfos = (DiskInfo*) malloc(disk_num * sizeof(DiskInfo));
- result_diskinfos = getDiskInfos(diskInfos, &disk_num);
+ j = 0;
for (i = 0; i < disk_num; i++) {
- for (k = 0; k < 6; k++) {
- if (use_label) {
- identifiers[i][k] = diskInfos[i].label[k];
- } else {
- identifiers[i][k] = diskInfos[i].disk_sn[k + 2];
+ if (use_label) {
+ if (diskInfos[i].label[0] != 0) {
+ memset(identifiers[j], 0, sizeof(PcIdentifier)); //!!!!!!!
+ strncpy(identifiers[j], diskInfos[i].label,
+ sizeof(PcIdentifier));
+ j++;
+ }
+ } else {
+ if (diskInfos[i].disk_sn[0] != 0) {
+ memcpy(identifiers[j], &diskInfos[i].disk_sn[2],
+ sizeof(PcIdentifier));
+ j++;
}
}
}
@@ -134,6 +195,9 @@
* 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
@@ -142,7 +206,8 @@
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:
@@ -157,30 +222,99 @@
case DISK_NUM:
result = generate_disk_pc_id(identifiers, array_size, false);
break;
- case DISK_LABEL:
- result = generate_disk_pc_id(identifiers, array_size, true);
+ case PLATFORM_SPECIFIC:
+ result = generate_platform_specific_pc_id(identifiers, array_size);
break;
default:
return ERROR;
}
if (result == OK && identifiers != NULL) {
- 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;
+ //fill array if larger
+ for (i = *array_size; i < original_array_size; i++) {
+ identifiers[i][0] = STRATEGY_UNKNOWN << 5;
+ 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;
+ }
+ VALGRIND_CHECK_VALUE_IS_DEFINED(identifiers[0]);
+ VALGRIND_CHECK_VALUE_IS_DEFINED(identifiers[1]);
+ result = encode_pc_id(identifiers[0], identifiers[1], identifier_out);
+ VALGRIND_CHECK_VALUE_IS_DEFINED(identifier_out);
+ free(identifiers);
+ return result;
}
/**
@@ -190,30 +324,48 @@
* @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;
- int i, j;
- bool found;
-
- result = decode_pc_id(&user_identifiers[0], &user_identifiers[1], str_code);
+ PcIdentifier* calculated_identifiers = NULL;
+ unsigned int calc_identifiers_size = 0;
+ int i = 0, j = 0;
+//bool found;
+#ifdef _DEBUG
+ printf("Comparing pc identifiers: \n");
+#endif
+ 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) {
@@ -223,7 +375,7 @@
if (calculated_identifiers != NULL) {
free(calculated_identifiers);
}
- current_strategy_id = previous_strategy_id;
+ previous_strategy_id = current_strategy_id;
generate_pc_id(NULL, &calc_identifiers_size, current_strategy_id);
calculated_identifiers = (PcIdentifier *) malloc(
sizeof(PcIdentifier) * calc_identifiers_size);
@@ -232,6 +384,13 @@
}
//maybe skip the byte 0
for (j = 0; j < calc_identifiers_size; j++) {
+#ifdef _DEBUG
+ printf("generated id: %02x%02x%02x%02x%02x%02x index %d, user_supplied id %02x%02x%02x%02x%02x%02x idx: %d\n",
+ calculated_identifiers[j][0],calculated_identifiers[j][1],calculated_identifiers[j][2],
+ calculated_identifiers[j][3],calculated_identifiers[j][4],calculated_identifiers[j][5],j,
+ user_identifiers[i][0],user_identifiers[i][1],user_identifiers[i][2],user_identifiers[i][3],user_identifiers[i][4],user_identifiers[i][5],i);
+
+#endif
if (!memcmp(user_identifiers[i], calculated_identifiers[j],
sizeof(PcIdentifier))) {
free(calculated_identifiers);
--
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