~NAXC~

File Content: `daemonserver.c`

/*
    Artificial Intelligence Support Assistant - (AISA)
*/
 
#include<stdio.h>
#include<string.h>    //strlen
#include<stdlib.h>    //strlen
#include<sys/socket.h>
#include<arpa/inet.h> //inet_addr
#include<unistd.h>    //write
#include<pthread.h> //for threading , link with lpthread
#include <errno.h>

//the thread function
void *connection_handler(void *);
char *execute_command (char *command, int len);
char *get_domain_info_from_server (char *command) ;
char* find_and_change_permission (char *command) ;
char* call_to_system (char *command) ;

int main(int argc , char *argv[])
{
    int socket_desc , client_sock , c , *new_sock;
    struct sockaddr_in server , client;

	socklen_t len;
	struct sockaddr_storage addr;
	char ipstr[INET6_ADDRSTRLEN];
	int enable = 1;
    //Create socket
    socket_desc = socket(AF_INET , SOCK_STREAM , 0);
    if (socket_desc == -1)
    {
        printf("Could not create socket");
    }
    puts("Socket created");
     
    //Prepare the sockaddr_in structure
    server.sin_family = AF_INET;
    server.sin_addr.s_addr = INADDR_ANY;
    server.sin_port = htons(4445);
    
if (setsockopt(socket_desc, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int)) < 0)
    perror("setsockopt(SO_REUSEADDR) failed"); 
    //Bind
    if( bind(socket_desc,(struct sockaddr *)&server , sizeof(server)) < 0)
    {
        //print the error message
        perror("bind failed. Error");
        return 1;
    }
    puts("bind done");
     
    //Listen
    listen(socket_desc , 3);
     
    //Accept and incoming connection
    puts("Waiting for incoming connections...");
    c = sizeof(struct sockaddr_in);
    while( (client_sock = accept(socket_desc, (struct sockaddr *)&client, (socklen_t*)&c)) )
    {
        puts("Connection accepted");

		len = sizeof addr;
		getpeername(client_sock, (struct sockaddr*)&addr, &len);

		// deal with both IPv4 and IPv6:
		if (addr.ss_family == AF_INET) 
		{
			struct sockaddr_in *s = (struct sockaddr_in *)&addr;
			inet_ntop(AF_INET, &s->sin_addr, ipstr, sizeof ipstr);
		} 
		else 
		{ // AF_INET6
		    struct sockaddr_in6 *s = (struct sockaddr_in6 *)&addr;
		    inet_ntop(AF_INET6, &s->sin6_addr, ipstr, sizeof ipstr);
		}

		printf("Peer IP address: %s\n", ipstr);

		if (strcmp(ipstr, "127.0.0.1") == 0)
		{
			puts("New Client connected from our server");
		}
		else
		{
			puts ("Other IP address, Disconnecting") ;
			close (client_sock) ;
			continue ;
		}
         
        pthread_t sniffer_thread;
        new_sock = malloc(1);
        *new_sock = client_sock;
         
        if( pthread_create( &sniffer_thread , NULL ,  connection_handler , (void*) new_sock) < 0)
        {
            perror("could not create thread");
            return 1;
        }
         
        //Now join the thread , so that we dont terminate before the thread
        //pthread_join( sniffer_thread , NULL);
    }
     
    if (client_sock < 0)
    {
        perror("accept failed");
        return 1;
    }
     
    return 0;
}
 
/*
 * This will handle connection for each client
 * */
void *connection_handler(void *socket_desc)
{
    //Get the socket descriptor
    int sock = *(int*)socket_desc;
    char command_to_exe [900024] ;
    char client_message [900024] ;
	char *tmp_fname ;
	char tmp_fname_res [100] ;
	char tmp_a [100] ; 
	int read_size ;
	FILE *fp;
     
	tmp_fname = tmpnam (NULL) ;
	fp = fopen(tmp_fname , "w" );

	read_size = recv(sock , client_message , 900024 , 0) ;
	fwrite(client_message , 1 , read_size , fp );

	fclose(fp);

	sprintf (command_to_exe, "/usr/bin/php -c /etc/sentora/panel/etc/apps/filemanager/php.ini /etc/sentora/panel/modules/server/php-multithreaded-socket-server-master/handle-server.php %s", tmp_fname) ;

	puts (command_to_exe) ;
	system (command_to_exe) ;
	    
	strcpy (tmp_fname_res, tmp_fname) ;
    	strcat (tmp_fname_res, ".res") ;

	fp = fopen(tmp_fname_res, "r" ); 
	if (fp == NULL)
	{
		puts ("file open failled") ;
		write(sock , "failed_to_open_response_file", strlen("Failed")) ;    
		remove (tmp_fname) ;
		return NULL;
	}

	memset(client_message,0, 900024);
	fread(client_message, 1, 900024, fp);
	fclose(fp);


	write(sock , client_message, strlen(client_message)) ;

    free(socket_desc);
    close(sock);
    remove (tmp_fname) ;
    remove (tmp_fname_res) ;

    return 0;
}
File Content: daemonserver.c

File Content: `daemonserver.c`
