void FileHash_handler(char *request)
{
memset(response, 0, sizeof(response));
char *request_data = NULL;
char delim[] = " \n";
request_data = strtok(request,delim);
request_data = strtok(NULL,delim);
if(request_data == NULL)
{
error = 1;
sprintf(response,"ERROR: Wrong Format");
}
while(request_data != NULL)
{
if(strcmp(request_data,"CheckAll") == 0)
{
request_data = strtok(NULL,delim);
if(request_data != NULL)
{
error = 1;
sprintf(response,"ERROR: Wrong Format. The correct format is:\nFileHash CheckAll");
return;
}
else
{
handleCheckAll();
}
}
else if(strcmp(request_data,"Verify") == 0)
{
request_data = strtok(NULL,delim);
if(request_data == NULL)
{
error = 1;
sprintf(response,"ERROR: Wrong Format. The correct format is:\nFileHash Verify <filename>");
return;
}
char *filename = request_data;
request_data = strtok(NULL,delim);
if(request_data != NULL)
{
error = 1;
sprintf(response,"ERROR: Wrong Format. The correct format is:\nFileHash Verify <filename>");
return;
}
else
handleVerify(filename);
}
}
}
void FileHash_handler(char *request)
{
char *request_data = NULL;
request_data = strtok(request,delim);
request_data = strtok(NULL,delim);
if(request_data == NULL)
{
error = 1;
sprintf(response,"ERROR: Wrong Format\n");
}
while(request_data != NULL)
{
if(strcmp(request_data,"--checkall") == 0)
{
request_data = strtok(NULL,delim);
if(request_data != NULL)
{
error = 1;
sprintf(response,"ERROR: Wrong Format. The correct format is:\nFileHash --checkall\n");
return;
}
else
{
handleCheckAll();
}
}
else if(strcmp(request_data,"--verify") == 0)
{
request_data = strtok(NULL,delim);
if(request_data == NULL)
{
error = 1;
sprintf(response,"ERROR: Wrong Format. The correct format is:\nFileHash --verify <filename>\n");
return;
}
char *filename = request_data;
request_data = strtok(NULL,delim);
if(request_data != NULL)
{
error = 1;
sprintf(response,"ERROR: Wrong Format. The correct format is:\nFileHash --verify <filename>\n");
return;
}
else
handleVerify(filename);
}
}
}
int tcp_client(char *ip,int conn_port)
{
int sockfd = 0;
sockfd = socket(AF_INET, SOCK_STREAM, 0);
struct sockaddr_in serv_addr;
int data = 0;
if(sockfd < 0)
{
printf("\n Error : Could not create socket \n");
return 0;
}
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(conn_port);
char read_buffer[1024],write_buffer[1024];
memset(read_buffer, 0,sizeof(read_buffer));
memset(write_buffer, 0,sizeof(write_buffer));
char FILE_NAME[1024];
if(inet_pton(AF_INET, ip, &serv_addr.sin_addr)<=0)
{
printf("\n inet_pton error occured\n");
return 0;
}
while(1)
{
if( connect(sockfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
{
continue;
}
else
{
printf("Client is Connected now : \n");
break;
}
}
int flag_download = 0 , flag_upload = 0;
while(1)
{
printf("Your request here : ");
flag_download = 0, flag_upload = 0;
FILE *fp = NULL;
int i = 0;
fgets(write_buffer,sizeof(write_buffer),stdin);
char *filename;
char copy[1024];
strcpy(copy,write_buffer);
filename = strtok(copy," \n");
if(strcmp(filename,"quit") == 0)
_exit(1);
if(strcmp(filename,"FileDownload") == 0)
{
flag_download = 1;
filename = strtok(NULL," \n");
strcpy(FILE_NAME,filename);
fp = fopen(FILE_NAME,"wb");
}
if(strcmp(filename,"FileUpload") == 0)
{
flag_upload = 1;
filename = strtok(NULL," \n");
strcpy(FILE_NAME,filename);
FILE *f = fopen(FILE_NAME, "r");
fseek(f, 0, SEEK_END);
unsigned long len = (unsigned long)ftell(f);
char size[1024];
memset(size, 0, sizeof(size));
sprintf(size,"%ld\n",len);
strcat(write_buffer,size);
fclose(f);
}
write(sockfd, write_buffer , strlen(write_buffer));
data = read(sockfd, read_buffer, sizeof(read_buffer)-1);
if(strcmp(read_buffer,"1") == 0)
{
size_t bytes_read;
int b,c;
printf("Upload Accepted\n");
handleVerify(FILE_NAME);
sprintf(cresponse, "%s, ",hdata[0].filename);
strcat(write_buffer,cresponse);
for (c = 0 ; c < MD5_DIGEST_LENGTH ; c++)
{
sprintf(cresponse, "%02x",hdata[b].hash[c]);
strcat(write_buffer,cresponse);
}
sprintf(cresponse, ", %s",ctime(&hdata[0].mtime));
strcat(write_buffer,cresponse);
write(sockfd , write_buffer , bytes_read);
printf("%s\n",write_buffer);
memset(write_buffer, 0, sizeof(write_buffer));
fp = fopen(FILE_NAME,"rb");
while(!feof(fp))
{
size_t bytes_read = fread(cresponse, 1, 1024, fp);
cresponse[1024] = 0;
memcpy(write_buffer,cresponse,bytes_read);
write(sockfd , write_buffer , bytes_read);
memset(write_buffer, 0, sizeof(write_buffer));
memset(cresponse, 0, sizeof(cresponse));
}
memcpy(write_buffer,"~^~",3);
write(sockfd , write_buffer , 3);
memset(write_buffer, 0, sizeof(write_buffer));
memset(read_buffer, 0, strlen(read_buffer));
fclose(fp);
}
else if(strcmp(read_buffer,"0\n") == 0)
{
printf("Upload Denied\n");
memset(read_buffer, 0,sizeof(read_buffer));
continue;
}
else
{
while(1)
{
read_buffer[data] = 0;
if(read_buffer[data-1] == '~' && read_buffer[data-3] == '~' && read_buffer[data-2] == '^')
{
read_buffer[data-3] = 0;
if(flag_download == 1)
{
fwrite(read_buffer,1,data-3,fp);
fclose(fp);
}
else
strcat(cresponse,read_buffer);
memset(read_buffer, 0,strlen(read_buffer));
break;
}
else
{
if(flag_download == 1)
fwrite(read_buffer,1,data,fp);
else
strcat(cresponse,read_buffer);
memset(read_buffer, 0,strlen(read_buffer));
}
data = read(sockfd, read_buffer, sizeof(read_buffer)-1);
if(data < 0)
break;
}
}
if(flag_download == 0)
printf("%s\n",cresponse);
else
printf("File Downloaded\n");
if(data < 0)
printf("\n Read error \n");
memset(read_buffer, 0,sizeof(read_buffer));
memset(write_buffer, 0,sizeof(write_buffer));
}
return 0;
}
