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client.c
439 lines (383 loc) · 12.3 KB
/
client.c
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#include "header.h"
int client(int port )
{
int connected, bytes_recieved,addr_len;
char udpsend [20000],tcpsend[20000],udpreceive[20000],tcpreceive[20000];
char regex[20000];
char fileName[20000];
struct hostent *h;
struct sockaddr_in server_addr;
h= (struct hostent *) gethostbyname((char *)"127.0.0.1");
if(flag==0)
connected = socket(AF_INET, SOCK_STREAM, 0);
else
connected = socket(AF_INET, SOCK_DGRAM, 0);
if (connected == -1) {
perror("Socket");
exit(1);
}
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(port);
server_addr.sin_addr = *((struct in_addr *)h->h_addr);
if(flag == 0)
bzero(&(server_addr.sin_zero), 8);
addr_len = sizeof(struct sockaddr);
if(flag == 0)
{
while (connect(connected, (struct sockaddr *)&server_addr,sizeof(struct sockaddr)) == -1) ;
}
/* Connection established between client and server
*/
printf("Usage: \n1. Download <filename>\n2. Upload <filename>\n3. IndexGet LongList \n4. IndexGet ShortList <start-timestamp> <end-timestamp>\n5. IndexGet RegEx\n6. FileHash Verify <filename>7. FileHash CheckAll\nEnter your command here:\n");
char *str;
char copy[20000];
while(1)
{
if(flag == 1)
gets(udpsend); // DATA which is got in the input buffer
else
gets(tcpsend); // DATA which is got in the input buffer
if(flag == 1)
scpy(copy,udpsend);
else
scpy(copy,tcpsend);
str = strtok (copy," ");
/*
IndexGet
*/
if(str!=NULL)
{
if(!strcmp(str,"FileHash"))
{
str = strtok (NULL, " ");
if(str !=NULL)
{
if(strcmp(str,"Verify")==0)
{
str = strtok (NULL, " ");
if(str!=NULL)
{
if(flag == 1)
{
printf("udpsend : %s\n",udpsend);
scpy(udpsend,"FV");
scat(udpsend,str);
sendto(connected, udpsend, strlen(udpsend), 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
}
else
{
scpy(tcpsend,"FV");
scat(tcpsend,str);
send(connected, tcpsend,strlen(tcpsend), 0);
}
while(1)
{
if(flag == 1)
{
bytes_recieved=recvfrom(connected,udpreceive,20000,0,
(struct sockaddr *)&server_addr, &addr_len);
udpreceive[bytes_recieved] = '\0';
if(strcmp(udpreceive,"End Of File") == 0)break;
fwrite(udpreceive,1,bytes_recieved,stdout);
}
else
{
bytes_recieved=recv(connected,tcpreceive,20000,0);
tcpreceive[bytes_recieved] = '\0';
if(strcmp(tcpreceive,"End Of File") == 0)break;
fwrite(tcpreceive,1,bytes_recieved,stdout);
}
}
if(flag == 1)
printf("\ndone\n");
continue;
}
}
else if(strcmp(str,"CheckAll")==0)
{
if(flag == 1)
{
scpy(udpsend,"FC");
sendto(connected, udpsend, strlen(udpsend), 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
}
else
{
scpy(tcpsend,"FC");
send(connected, tcpsend,strlen(tcpsend), 0);
}
while(1)
{
if(flag == 1)
{
bytes_recieved=recvfrom(connected,udpreceive,20000,0,
(struct sockaddr *)&server_addr, &addr_len);
udpreceive[bytes_recieved] = '\0';
if(strcmp(udpreceive,"End Of File") == 0)break;
fwrite(udpreceive,1,bytes_recieved,stdout);
}
else
{
bytes_recieved=recv(connected,tcpreceive,20000,0);
tcpreceive[bytes_recieved] = '\0';
if(strcmp(tcpreceive,"End Of File") == 0)break;
fwrite(tcpreceive,1,bytes_recieved,stdout);
}
}
printf("\ndone\n");
continue;
}
}
else printf("Please enter correct command\n");
}
else if(strcmp(str,"IndexGet")==0)
{
str = strtok (NULL, " ");
if(str!=NULL)
{
if(strcmp(str,"ShortList")==0)
{
printf("InShortlist\n");
str = strtok (NULL, " ");
if(str!=NULL)
{
if(flag == 1)
{
scpy(udpsend,"IS");
scat(udpsend,str);
}
else
{
scpy(tcpsend,"IS");
scat(tcpsend,str);
}
str = strtok (NULL, " ");
printf("Enter Danger %s\n",str);
if(str!=NULL)
{
if(flag == 1)
{
scat(udpsend," ");
scat(udpsend,str);
printf("udpsend : %s\n",udpsend);
sendto(connected, udpsend, strlen(udpsend), 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
}
else
{
scat(tcpsend," ");
scat(tcpsend,str);
printf("tcpsend : %s\n",tcpsend);
send(connected, tcpsend,strlen(tcpsend), 0);
}
printf("In Loop\n");
//replace this with fiel catcher
while(1)
{
if(flag == 1)
{
bytes_recieved=recvfrom(connected,udpreceive,20000,0,
(struct sockaddr *)&server_addr, &addr_len);
udpreceive[bytes_recieved] = '\0';
if(strcmp(udpreceive,"End Of File") == 0)break;
fwrite(udpreceive,1,bytes_recieved,stdout);
}
else
{
bytes_recieved=recv(connected,tcpreceive,20000,0);
tcpreceive[bytes_recieved] = '\0';
if(strcmp(tcpreceive,"End Of File") == 0)break;
fwrite(tcpreceive,1,bytes_recieved,stdout);
}
}
printf("\ndone\n");
continue;
}
}
}
if(strcmp(str,"ReGex")==0)
{
str = strtok (NULL, " ");
if(str!=NULL)
{
if(flag == 1)
{
scpy(udpsend,"IR");
scat(udpsend,str);
printf("udpsend : %s\n",udpsend);
sendto(connected, udpsend, strlen(udpsend), 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
}
else
{
scpy(tcpsend,"IR");
scat(tcpsend,str);
printf("tcpsend : %s\n",tcpsend);
send(connected, tcpsend,strlen(tcpsend), 0);
}
// implement regex
while(1)
{
if(flag == 1)
{
bytes_recieved=recvfrom(connected,udpreceive,20000,0,
(struct sockaddr *)&server_addr, &addr_len);
udpreceive[bytes_recieved] = '\0';
if(strcmp(udpreceive,"End Of File") == 0)break;
fwrite(udpreceive,1,bytes_recieved,stdout);
}
else
{
bytes_recieved=recv(connected,tcpreceive,20000,0);
tcpreceive[bytes_recieved] = '\0';
if(strcmp(tcpreceive,"End Of File") == 0)break;
fwrite(tcpreceive,1,bytes_recieved,stdout);
}
}
printf("\ndone\n");
continue;
}
else
{
printf("no filename given\n");
}
}
else if(strcmp(str,"LongList")==0)
{
if(flag == 1)
{
scpy(udpsend,"IL");
printf("------SENDING IL\n");
sendto(connected, udpsend, strlen(udpsend), 0,
(struct sockaddr *)&server_addr, sizeof(server_addr));
printf("------ready to receive file\n");
}
else
{
scpy(tcpsend,"IL");
send(connected, tcpsend,strlen(tcpsend), 0);
}
while(1)
{
if(flag == 1)
{
int temp = sizeof(struct sockaddr);
bytes_recieved=recvfrom(connected,udpreceive,20000,0,
(struct sockaddr *)&server_addr, &temp);
udpreceive[bytes_recieved] = '\0';
if(strcmp(udpreceive,"End Of File") == 0)break;
fwrite(udpreceive,1,bytes_recieved,stdout);
}
else
{
bytes_recieved=recv(connected,tcpreceive,20000,0);
tcpreceive[bytes_recieved] = '\0';
if(strcmp(tcpreceive,"End Of File") == 0)break;
fwrite(tcpreceive,1,bytes_recieved,stdout);
}
}
printf("\ndone\n");
continue;
}
}
}
else if(strcmp(str,"Download") == 0)
{
str = strtok (NULL, " ");
if(str!=NULL)
{
resend:
if(flag == 1)
{
scpy(udpsend,"D ");
scat(udpsend,str);
sendto(connected, udpsend, 20000, 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
}
else
{
scpy(tcpsend,"D ");
scat(tcpsend,str);
write(connected,tcpsend,20000);
}
printf("printing %s\n",str);
FILE *fp1 = fopen(str,"wb");
memset(udpreceive,0,20000);
while(1)
{
if(flag == 1)
{
bytes_recieved=recvfrom(connected,udpreceive,20000,0,
(struct sockaddr *)&server_addr, &addr_len);
udpreceive[bytes_recieved] = '\0';
printf("got %s number %d-----\n",udpreceive,bytes_recieved);
if(strcmp(udpreceive,"End Of File")==0)
{
break;
}
fwrite(udpreceive, 1,bytes_recieved, fp1);
}
else
{
bytes_recieved=read(connected,tcpreceive,20000);
if(strcmp(tcpreceive,"End Of File")==0)
{
break;
}
fwrite(tcpreceive, 1,bytes_recieved, fp1);
}
}
printf("File closed\n");
fclose(fp1);
}
else printf("Please provide correct command");
}
else if(strcmp(str,"Upload") == 0)
{
str = strtok (NULL, " ");
char arr[100];
scpy(arr,str);
printf("opening %s\n",arr);
if(flag == 1)
{
scpy(udpsend,"U ");
scat(udpsend,str);
sendto(connected, udpsend, 20000, 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
}
else
{
scpy(tcpsend,"U ");
scat(tcpsend,str);
write(connected,tcpsend,20000);
}
}
else{
if ((strcmp(udpsend , "q") == 0 || strcmp(udpsend , "Q") == 0) || timeToclose ==1)
{
if(timeToclose)
printf("quitting\n");
if(flag == 1)
sendto(connected, udpsend, strlen(udpsend), 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr)) ;
else
send(connected, tcpsend,strlen(tcpsend), 0);
fflush(stdout);
close(connected);
exit(0);
break;
}
else
{
if(flag == 1)
sendto(connected, udpsend, strlen(udpsend), 0,
(struct sockaddr *)&server_addr, sizeof(struct sockaddr));
else
send(connected, tcpsend,strlen(tcpsend), 0);
}
}
}
}
return 0;
}