Scan the entire Internet looking for webservers
This revision is from 2024/02/10 06:08. You can Restore it.
#include#include #include #include #include #include #include #define PORT_80 80 #define PORT_443 443 char *check_port_open(int port, char *ip_address) { // ... (same as before) if (result == 0) { printf("Port %d is open on %sn", port, ip_address); return strdup(ip_address); } else { // ... (same as before) } } int main() { FILE *csv_file = fopen("open_ports.csv", "w"); if (csv_file == NULL) { perror("Failed to open CSV file"); return 1; } for (int i = 0; i < 256; ++i) { // Loop for first octet for (int j = 0; j < 256; ++j) { // Loop for second octet for (int k = 0; k < 256; ++k) { // Loop for third octet for (int l = 1; l <= 255; ++l) { // Loop for fourth octet, start from 1 to exclude 0.0.0.0 char ip_address[16]; snprintf(ip_address, 16, "%d.%d.%d.%d", i, j, k, l); char *open_ip = check_port_open(PORT_80, ip_address); if (open_ip != NULL) { fprintf(csv_file, "%s,%dn", open_ip, PORT_80); free(open_ip); } open_ip = check_port_open(PORT_443, ip_address); if (open_ip != NULL) { fprintf(csv_file, "%s,%dn", open_ip, PORT_443); free(open_ip); } } } } } fclose(csv_file); return 0; } {/pre}