fork download
copy 
  1. #include <stdio.h>
  2. #include <stdint.h>
  3. #include <string.h>
  4. #include <stdlib.h>
  5.  
  6. #define MAX_NODES 100
  7. #define MAX_NEIGHBORS 5
  8. #define FIRMWARE_URL "http://e...content-available-to-author-only...e.com/firmware.bin" // URL to the firmware binary
  9. #define FIRMWARE_SIZE 1024 * 1024 // Example firmware size (1 MB)
  10. #define BACKUP_FIRMWARE_SIZE FIRMWARE_SIZE // Size for backup firmware
  11.  
  12. typedef struct Node {
  13.     uint8_t id;
  14.     uint8_t isMalicious; // 1 for malicious, 0 for benign
  15.     uint8_t neighbors[MAX_NEIGHBORS]; // Array to hold neighbor IDs
  16.     uint8_t neighborCount; // Count of current neighbors
  17.     uint8_t firmware[BACKUP_FIRMWARE_SIZE]; // Current firmware
  18.     uint8_t backupFirmware[BACKUP_FIRMWARE_SIZE]; // Backup firmware
  19.     uint8_t firmwareVersion; // Version of the current firmware
  20. } Node;
  21.  
  22. // Function prototypes
  23. void initializeNode(Node *node, uint8_t id);
  24. void addNeighbor(Node *node, uint8_t neighborId);
  25. void sendData(Node *sender, Node *receiver, const char *data);
  26. void simulateNetwork(Node *nodes, uint8_t count);
  27. int downloadFirmware(const char *url, uint8_t *buffer, size_t size);
  28. int validateFirmware(uint8_t *buffer, size_t size);
  29. void applyFirmwareUpdate(Node *node, uint8_t *buffer, size_t size);
  30. void printNodeInfo(Node *node);
  31. void backupFirmware(Node *node);
  32. void logMessage(const char *message);
  33.  
  34. void initializeNode(Node *node, uint8_t id) {
  35.     if (node == NULL) return; // Error handling
  36.     node->id = id;
  37.     node->isMalicious = (rand() % 3 == 0) ? 1 : 0; // Randomly assign malicious status
  38.     node->neighborCount = 0; // Initialize neighbor count
  39.     node->firmwareVersion = 1; // Initialize firmware version
  40.     memset(node->firmware, 0, BACKUP_FIRMWARE_SIZE); // Initialize firmware
  41.     memset(node->backupFirmware, 0, BACKUP_FIRMWARE_SIZE); // Initialize backup firmware
  42. }
  43.  
  44. void addNeighbor(Node *node, uint8_t neighborId) {
  45.     if (node == NULL || node->neighborCount >= MAX_NEIGHBORS) return; // Error handling
  46.     node->neighbors[node->neighborCount++] = neighborId;
  47. }
  48.  
  49. void sendData(Node *sender, Node *receiver, const char *data) {
  50.     if (receiver == NULL || sender == NULL || data == NULL) return; // Error handling
  51.     if (receiver->isMalicious) {
  52.         // Simulate blackhole behavior: drop the packet
  53.         logMessage("Dropped packet due to malicious node.");
  54.         return;
  55.     }
  56.     // Simulate successful data transmission
  57.     printf("Node %d sent data to Node %d: %s\n", sender->id, receiver->id, data);
  58. }
  59.  
  60. void printNodeInfo(Node *node) {
  61.     if (node == NULL) return; // Error handling
  62.     printf("Node ID: %d, Malicious: %d, Neighbors: ", node->id, node->isMalicious);
  63.     for (uint8_t j = 0; j < node->neighborCount; j++) {
  64.         printf("%d ", node->neighbors[j]);
  65.     }
  66.     printf("\n");
  67. }
  68.  
  69. void simulateNetwork(Node *nodes, uint8_t count) {
  70.     for (uint8_t i = 0; i < 5; i++) { // Simulate 5 rounds of data transmission
  71.         for (uint8_t j = 0; j < count; j++) {
  72.             Node *sender = &nodes[j];
  73.             if (sender->neighborCount > 0) {
  74.                 uint8_t neighborIndex = rand() % sender->neighborCount; // Randomly select a neighbor
  75.                 Node *receiver = &nodes[sender->neighbors[neighborIndex]];
  76.  
  77.                 char data[50];
  78.                 snprintf(data, sizeof(data), "Data from Node %d", sender->id);
  79.  
  80.                 sendData(sender, receiver, data);
  81.             }
  82.         }
  83.     }
  84. }
  85.  
  86. int downloadFirmware(const char *url, uint8_t *buffer, size_t size) {
  87.     // Simulate downloading firmware
  88.     logMessage("Downloading firmware...");
  89.     memset(buffer, 0xFF, size); // Simulate firmware data
  90.     return 0; // Return 0 on success
  91. }
  92.  
  93. int validateFirmware(uint8_t *buffer, size_t size) {
  94.     // Simulate firmware validation
  95.     // For this example, we will assume the firmware is valid if the first byte is 0xFF
  96.     if (buffer == NULL || size == 0) {
  97.         logMessage("Invalid firmware buffer or size.");
  98.         return 0; // Invalid
  99.     }
  100.     return (buffer[0] == 0xFF) ? 1 : 0; // Return 1 if valid, 0 if invalid
  101. }
  102.  
  103. void backupFirmware(Node *node) {
  104.     // Backup the current firmware
  105.     memcpy(node->backupFirmware, node->firmware, BACKUP_FIRMWARE_SIZE);
  106.     logMessage("Backup of firmware created.");
  107. }
  108.  
  109. void applyFirmwareUpdate(Node *node, uint8_t *buffer, size_t size) {
  110.     // Backup current firmware before applying the update
  111.     backupFirmware(node);
  112.  
  113.     // Apply the new firmware update
  114.     memcpy(node->firmware, buffer, size);
  115.     node->firmwareVersion++; // Increment firmware version
  116.     logMessage("Firmware updated successfully.");
  117. }
  118.  
  119. void logMessage(const char *message) {
  120.     // Simple logging function
  121.     printf("LOG: %s\n", message);
  122. }
  123.  
  124. int main() {
  125.     Node nodes[MAX_NODES];
  126.     uint8_t firmwareBuffer[FIRMWARE_SIZE];
  127.  
  128.     // Initialize nodes
  129.     for (uint8_t i = 0; i < MAX_NODES; i++) {
  130.         initializeNode(&nodes[i], i);
  131.     }
  132.  
  133.     // Add neighbors (for demonstration purposes)
  134.     addNeighbor(&nodes[0], 1);
  135.     addNeighbor(&nodes[0], 2);
  136.     addNeighbor(&nodes[1], 0);
  137.     addNeighbor(&nodes[1], 2);
  138.     addNeighbor(&nodes[2], 0);
  139.     addNeighbor(&nodes[2], 1);
  140.     addNeighbor(&nodes[3], 4);
  141.     addNeighbor(&nodes[4], 3);
  142.     addNeighbor(&nodes[5], 6);
  143.     addNeighbor(&nodes[6], 5);
  144.     addNeighbor(&nodes[7], 8);
  145.     addNeighbor(&nodes[8], 7);
  146.     addNeighbor(&nodes[9], 0); // Node 9 has a neighbor
  147.  
  148.     // Print initial node information
  149.     for (uint8_t i = 0; i < MAX_NODES; i++) {
  150.         printNodeInfo(&nodes[i]);
  151.     }
  152.  
  153.     // Simulate network behavior
  154.     simulateNetwork(nodes, MAX_NODES);
  155.  
  156.     // Download firmware
  157.     if (downloadFirmware(FIRMWARE_URL, firmwareBuffer, FIRMWARE_SIZE) == 0) {
  158.         // Validate firmware
  159.         if (validateFirmware(firmwareBuffer, FIRMWARE_SIZE)) {
  160.             // Apply firmware update
  161.             applyFirmwareUpdate(&nodes[0], firmwareBuffer, FIRMWARE_SIZE); // Update node 0 as an example
  162.         } else {
  163.             logMessage("Firmware validation failed!");
  164.         }
  165.     } else {
  166.         logMessage("Firmware download failed!");
  167.     }
  168.  
  169.     // Print node information after firmware update
  170.     for (uint8_t i = 0; i < MAX_NODES; i++) {
  171.         printNodeInfo(&nodes[i]);
  172.     }
  173.  
  174.     return 0;
  175. }
  176.  
Success #stdin #stdout 0.04s 207340KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Node ID: 0, Malicious: 0, Neighbors: 1 2 
Node ID: 1, Malicious: 0, Neighbors: 0 2 
Node ID: 2, Malicious: 1, Neighbors: 0 1 
Node ID: 3, Malicious: 0, Neighbors: 4 
Node ID: 4, Malicious: 0, Neighbors: 3 
Node ID: 5, Malicious: 0, Neighbors: 6 
Node ID: 6, Malicious: 0, Neighbors: 5 
Node ID: 7, Malicious: 1, Neighbors: 8 
Node ID: 8, Malicious: 1, Neighbors: 7 
Node ID: 9, Malicious: 0, Neighbors: 0 
Node ID: 10, Malicious: 0, Neighbors: 
Node ID: 11, Malicious: 0, Neighbors: 
Node ID: 12, Malicious: 0, Neighbors: 
Node ID: 13, Malicious: 0, Neighbors: 
Node ID: 14, Malicious: 0, Neighbors: 
Node ID: 15, Malicious: 0, Neighbors: 
Node ID: 16, Malicious: 1, Neighbors: 
Node ID: 17, Malicious: 1, Neighbors: 
Node ID: 18, Malicious: 0, Neighbors: 
Node ID: 19, Malicious: 0, Neighbors: 
Node ID: 20, Malicious: 0, Neighbors: 
Node ID: 21, Malicious: 0, Neighbors: 
Node ID: 22, Malicious: 1, Neighbors: 
Node ID: 23, Malicious: 1, Neighbors: 
Node ID: 24, Malicious: 0, Neighbors: 
Node ID: 25, Malicious: 0, Neighbors: 
Node ID: 26, Malicious: 0, Neighbors: 
Node ID: 27, Malicious: 0, Neighbors: 
Node ID: 28, Malicious: 0, Neighbors: 
Node ID: 29, Malicious: 0, Neighbors: 
Node ID: 30, Malicious: 0, Neighbors: 
Node ID: 31, Malicious: 1, Neighbors: 
Node ID: 32, Malicious: 1, Neighbors: 
Node ID: 33, Malicious: 1, Neighbors: 
Node ID: 34, Malicious: 0, Neighbors: 
Node ID: 35, Malicious: 1, Neighbors: 
Node ID: 36, Malicious: 0, Neighbors: 
Node ID: 37, Malicious: 0, Neighbors: 
Node ID: 38, Malicious: 0, Neighbors: 
Node ID: 39, Malicious: 0, Neighbors: 
Node ID: 40, Malicious: 1, Neighbors: 
Node ID: 41, Malicious: 1, Neighbors: 
Node ID: 42, Malicious: 1, Neighbors: 
Node ID: 43, Malicious: 0, Neighbors: 
Node ID: 44, Malicious: 0, Neighbors: 
Node ID: 45, Malicious: 0, Neighbors: 
Node ID: 46, Malicious: 0, Neighbors: 
Node ID: 47, Malicious: 0, Neighbors: 
Node ID: 48, Malicious: 0, Neighbors: 
Node ID: 49, Malicious: 1, Neighbors: 
Node ID: 50, Malicious: 0, Neighbors: 
Node ID: 51, Malicious: 0, Neighbors: 
Node ID: 52, Malicious: 0, Neighbors: 
Node ID: 53, Malicious: 0, Neighbors: 
Node ID: 54, Malicious: 0, Neighbors: 
Node ID: 55, Malicious: 1, Neighbors: 
Node ID: 56, Malicious: 0, Neighbors: 
Node ID: 57, Malicious: 0, Neighbors: 
Node ID: 58, Malicious: 0, Neighbors: 
Node ID: 59, Malicious: 0, Neighbors: 
Node ID: 60, Malicious: 1, Neighbors: 
Node ID: 61, Malicious: 1, Neighbors: 
Node ID: 62, Malicious: 0, Neighbors: 
Node ID: 63, Malicious: 1, Neighbors: 
Node ID: 64, Malicious: 0, Neighbors: 
Node ID: 65, Malicious: 0, Neighbors: 
Node ID: 66, Malicious: 0, Neighbors: 
Node ID: 67, Malicious: 1, Neighbors: 
Node ID: 68, Malicious: 0, Neighbors: 
Node ID: 69, Malicious: 0, Neighbors: 
Node ID: 70, Malicious: 1, Neighbors: 
Node ID: 71, Malicious: 1, Neighbors: 
Node ID: 72, Malicious: 1, Neighbors: 
Node ID: 73, Malicious: 1, Neighbors: 
Node ID: 74, Malicious: 0, Neighbors: 
Node ID: 75, Malicious: 1, Neighbors: 
Node ID: 76, Malicious: 0, Neighbors: 
Node ID: 77, Malicious: 0, Neighbors: 
Node ID: 78, Malicious: 1, Neighbors: 
Node ID: 79, Malicious: 0, Neighbors: 
Node ID: 80, Malicious: 0, Neighbors: 
Node ID: 81, Malicious: 1, Neighbors: 
Node ID: 82, Malicious: 1, Neighbors: 
Node ID: 83, Malicious: 0, Neighbors: 
Node ID: 84, Malicious: 0, Neighbors: 
Node ID: 85, Malicious: 1, Neighbors: 
Node ID: 86, Malicious: 1, Neighbors: 
Node ID: 87, Malicious: 0, Neighbors: 
Node ID: 88, Malicious: 0, Neighbors: 
Node ID: 89, Malicious: 0, Neighbors: 
Node ID: 90, Malicious: 1, Neighbors: 
Node ID: 91, Malicious: 1, Neighbors: 
Node ID: 92, Malicious: 0, Neighbors: 
Node ID: 93, Malicious: 1, Neighbors: 
Node ID: 94, Malicious: 0, Neighbors: 
Node ID: 95, Malicious: 0, Neighbors: 
Node ID: 96, Malicious: 0, Neighbors: 
Node ID: 97, Malicious: 1, Neighbors: 
Node ID: 98, Malicious: 1, Neighbors: 
Node ID: 99, Malicious: 0, Neighbors: 
LOG: Dropped packet due to malicious node.
Node 1 sent data to Node 0: Data from Node 1
Node 2 sent data to Node 0: Data from Node 2
Node 3 sent data to Node 4: Data from Node 3
Node 4 sent data to Node 3: Data from Node 4
Node 5 sent data to Node 6: Data from Node 5
Node 6 sent data to Node 5: Data from Node 6
LOG: Dropped packet due to malicious node.
LOG: Dropped packet due to malicious node.
Node 9 sent data to Node 0: Data from Node 9
Node 0 sent data to Node 1: Data from Node 0
Node 1 sent data to Node 0: Data from Node 1
Node 2 sent data to Node 1: Data from Node 2
Node 3 sent data to Node 4: Data from Node 3
Node 4 sent data to Node 3: Data from Node 4
Node 5 sent data to Node 6: Data from Node 5
Node 6 sent data to Node 5: Data from Node 6
LOG: Dropped packet due to malicious node.
LOG: Dropped packet due to malicious node.
Node 9 sent data to Node 0: Data from Node 9
Node 0 sent data to Node 1: Data from Node 0
LOG: Dropped packet due to malicious node.
Node 2 sent data to Node 1: Data from Node 2
Node 3 sent data to Node 4: Data from Node 3
Node 4 sent data to Node 3: Data from Node 4
Node 5 sent data to Node 6: Data from Node 5
Node 6 sent data to Node 5: Data from Node 6
LOG: Dropped packet due to malicious node.
LOG: Dropped packet due to malicious node.
Node 9 sent data to Node 0: Data from Node 9
LOG: Dropped packet due to malicious node.
Node 1 sent data to Node 0: Data from Node 1
Node 2 sent data to Node 1: Data from Node 2
Node 3 sent data to Node 4: Data from Node 3
Node 4 sent data to Node 3: Data from Node 4
Node 5 sent data to Node 6: Data from Node 5
Node 6 sent data to Node 5: Data from Node 6
LOG: Dropped packet due to malicious node.
LOG: Dropped packet due to malicious node.
Node 9 sent data to Node 0: Data from Node 9
Node 0 sent data to Node 1: Data from Node 0
LOG: Dropped packet due to malicious node.
Node 2 sent data to Node 0: Data from Node 2
Node 3 sent data to Node 4: Data from Node 3
Node 4 sent data to Node 3: Data from Node 4
Node 5 sent data to Node 6: Data from Node 5
Node 6 sent data to Node 5: Data from Node 6
LOG: Dropped packet due to malicious node.
LOG: Dropped packet due to malicious node.
Node 9 sent data to Node 0: Data from Node 9
LOG: Downloading firmware...
LOG: Backup of firmware created.
LOG: Firmware updated successfully.
Node ID: 0, Malicious: 0, Neighbors: 1 2 
Node ID: 1, Malicious: 0, Neighbors: 0 2 
Node ID: 2, Malicious: 1, Neighbors: 0 1 
Node ID: 3, Malicious: 0, Neighbors: 4 
Node ID: 4, Malicious: 0, Neighbors: 3 
Node ID: 5, Malicious: 0, Neighbors: 6 
Node ID: 6, Malicious: 0, Neighbors: 5 
Node ID: 7, Malicious: 1, Neighbors: 8 
Node ID: 8, Malicious: 1, Neighbors: 7 
Node ID: 9, Malicious: 0, Neighbors: 0 
Node ID: 10, Malicious: 0, Neighbors: 
Node ID: 11, Malicious: 0, Neighbors: 
Node ID: 12, Malicious: 0, Neighbors: 
Node ID: 13, Malicious: 0, Neighbors: 
Node ID: 14, Malicious: 0, Neighbors: 
Node ID: 15, Malicious: 0, Neighbors: 
Node ID: 16, Malicious: 1, Neighbors: 
Node ID: 17, Malicious: 1, Neighbors: 
Node ID: 18, Malicious: 0, Neighbors: 
Node ID: 19, Malicious: 0, Neighbors: 
Node ID: 20, Malicious: 0, Neighbors: 
Node ID: 21, Malicious: 0, Neighbors: 
Node ID: 22, Malicious: 1, Neighbors: 
Node ID: 23, Malicious: 1, Neighbors: 
Node ID: 24, Malicious: 0, Neighbors: 
Node ID: 25, Malicious: 0, Neighbors: 
Node ID: 26, Malicious: 0, Neighbors: 
Node ID: 27, Malicious: 0, Neighbors: 
Node ID: 28, Malicious: 0, Neighbors: 
Node ID: 29, Malicious: 0, Neighbors: 
Node ID: 30, Malicious: 0, Neighbors: 
Node ID: 31, Malicious: 1, Neighbors: 
Node ID: 32, Malicious: 1, Neighbors: 
Node ID: 33, Malicious: 1, Neighbors: 
Node ID: 34, Malicious: 0, Neighbors: 
Node ID: 35, Malicious: 1, Neighbors: 
Node ID: 36, Malicious: 0, Neighbors: 
Node ID: 37, Malicious: 0, Neighbors: 
Node ID: 38, Malicious: 0, Neighbors: 
Node ID: 39, Malicious: 0, Neighbors: 
Node ID: 40, Malicious: 1, Neighbors: 
Node ID: 41, Malicious: 1, Neighbors: 
Node ID: 42, Malicious: 1, Neighbors: 
Node ID: 43, Malicious: 0, Neighbors: 
Node ID: 44, Malicious: 0, Neighbors: 
Node ID: 45, Malicious: 0, Neighbors: 
Node ID: 46, Malicious: 0, Neighbors: 
Node ID: 47, Malicious: 0, Neighbors: 
Node ID: 48, Malicious: 0, Neighbors: 
Node ID: 49, Malicious: 1, Neighbors: 
Node ID: 50, Malicious: 0, Neighbors: 
Node ID: 51, Malicious: 0, Neighbors: 
Node ID: 52, Malicious: 0, Neighbors: 
Node ID: 53, Malicious: 0, Neighbors: 
Node ID: 54, Malicious: 0, Neighbors: 
Node ID: 55, Malicious: 1, Neighbors: 
Node ID: 56, Malicious: 0, Neighbors: 
Node ID: 57, Malicious: 0, Neighbors: 
Node ID: 58, Malicious: 0, Neighbors: 
Node ID: 59, Malicious: 0, Neighbors: 
Node ID: 60, Malicious: 1, Neighbors: 
Node ID: 61, Malicious: 1, Neighbors: 
Node ID: 62, Malicious: 0, Neighbors: 
Node ID: 63, Malicious: 1, Neighbors: 
Node ID: 64, Malicious: 0, Neighbors: 
Node ID: 65, Malicious: 0, Neighbors: 
Node ID: 66, Malicious: 0, Neighbors: 
Node ID: 67, Malicious: 1, Neighbors: 
Node ID: 68, Malicious: 0, Neighbors: 
Node ID: 69, Malicious: 0, Neighbors: 
Node ID: 70, Malicious: 1, Neighbors: 
Node ID: 71, Malicious: 1, Neighbors: 
Node ID: 72, Malicious: 1, Neighbors: 
Node ID: 73, Malicious: 1, Neighbors: 
Node ID: 74, Malicious: 0, Neighbors: 
Node ID: 75, Malicious: 1, Neighbors: 
Node ID: 76, Malicious: 0, Neighbors: 
Node ID: 77, Malicious: 0, Neighbors: 
Node ID: 78, Malicious: 1, Neighbors: 
Node ID: 79, Malicious: 0, Neighbors: 
Node ID: 80, Malicious: 0, Neighbors: 
Node ID: 81, Malicious: 1, Neighbors: 
Node ID: 82, Malicious: 1, Neighbors: 
Node ID: 83, Malicious: 0, Neighbors: 
Node ID: 84, Malicious: 0, Neighbors: 
Node ID: 85, Malicious: 1, Neighbors: 
Node ID: 86, Malicious: 1, Neighbors: 
Node ID: 87, Malicious: 0, Neighbors: 
Node ID: 88, Malicious: 0, Neighbors: 
Node ID: 89, Malicious: 0, Neighbors: 
Node ID: 90, Malicious: 1, Neighbors: 
Node ID: 91, Malicious: 1, Neighbors: 
Node ID: 92, Malicious: 0, Neighbors: 
Node ID: 93, Malicious: 1, Neighbors: 
Node ID: 94, Malicious: 0, Neighbors: 
Node ID: 95, Malicious: 0, Neighbors: 
Node ID: 96, Malicious: 0, Neighbors: 
Node ID: 97, Malicious: 1, Neighbors: 
Node ID: 98, Malicious: 1, Neighbors: 
Node ID: 99, Malicious: 0, Neighbors:
https://ideone.com/K8MSl0
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!