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| #include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/sendfile.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <fcntl.h>
#define MAXLINE 511
int tcp_connect(int af, char *servip, unsigned short port) {
struct sockaddr_in servaddr;
int s;
if ((s = socket(af, SOCK_STREAM, 0)) < 0)
return -1;
bzero((char *)&servaddr, sizeof(servaddr));
servaddr.sin_family = af;
inet_pton(AF_INET, servip, &servaddr.sin_addr);
servaddr.sin_port = htons(port);
if (connect(s, (struct sockaddr *)&servaddr, sizeof(servaddr))
< 0)
return -1;
return s;
}
int main(int argc, char *argv[])
{
struct sockaddr_in server;
struct stat obj;
int sock;
char bufmsg[MAXLINE];
char buf[100], command[5], filename[MAXLINE], *f;
char temp[20];
int k, size, status;
int filehandle;
if (argc != 3) {
printf("사용법 : %s server_ip port\n", argv[0]);
exit(1);
}
sock = tcp_connect(AF_INET, argv[1], atoi(argv[2]));
if (sock == -1) {
printf("tcp_connect fail");
exit(1);
}
while (1) {
printf("\033[1;33m명령어 : get, put, pwd, ls, cd, quit\n");
printf("\033[1;32mclient> ");
fgets(bufmsg, MAXLINE, stdin);
fprintf(stderr, "\033[97m");
if (!strcmp(bufmsg, "get\n")) {
printf("다운로드할 파일 : ");
scanf("%s", filename);
fgets(temp, MAXLINE, stdin);
strcpy(buf, "get ");
strcat(buf, filename);
send(sock, buf, 100, 0);
recv(sock, &size, sizeof(int), 0);
if (!size) {
printf("파일이 없습니다\n");
continue;
}
f = malloc(size);
recv(sock, f, size, 0);
while (1) {
filehandle = open(filename, O_CREAT | O_EXCL | O_WRONLY, 0666);
if (filehandle == -1)
sprintf(filename + strlen(filename), "_1");
else break;
}
write(filehandle, f, size, 0);
close(filehandle);
printf("다운로드 완료\n");
}
else if (!strcmp(bufmsg, "put\n")) {
printf("업로드할 파일 : ");
scanf("%s", filename);
fgets(temp, MAXLINE, stdin);
filehandle = open(filename, O_RDONLY);
if (filehandle == -1) {
printf("파일이 없습니다.\n");
continue;
}
strcpy(buf, "put ");
strcat(buf, filename);
send(sock, buf, 100, 0);
stat(filename, &obj);
size = obj.st_size;
send(sock, &size, sizeof(int), 0);
sendfile(sock, filehandle, NULL, size);
recv(sock, &status, sizeof(int), 0);
if (status)
printf("업로드 완료\n");
else
printf("업로드 실패\n");
}
else if (!strcmp(bufmsg, "pwd\n")) {
strcpy(buf, "pwd");
send(sock, buf, 100, 0);
recv(sock, buf, 100, 0);
printf("--The path of the Remote Directory--\n%s", buf);
}
else if (!strcmp(bufmsg, "ls\n")) {
strcpy(buf, "ls");
send(sock, buf, 100, 0);
recv(sock, &size, sizeof(int), 0);
f = malloc(size);
recv(sock, f, size, 0);
filehandle = creat("temp.txt", O_WRONLY);
write(filehandle, f, size, 0);
close(filehandle);
printf("--The Remote Directory List--\n");
system("cat temp.txt");
}
else if (!strcmp(bufmsg, "cd\n")) {
strcpy(buf, "cd ");
printf("이동할 경로 이름 : ");
scanf("%s", buf + 3);
fgets(temp, MAXLINE, stdin);
send(sock, buf, 100, 0);
recv(sock, &status, sizeof(int), 0);
if (status)
printf("경로 변경 완료\n");
else
printf("경로 변경 실패\n");
}
else if (!strcmp(bufmsg, "quit\n")) {
strcpy(buf, "quit");
send(sock, buf, 100, 0);
recv(sock, &status, 100, 0);
if (status) {
printf("서버를 닫는 중..\n");
exit(0);
}
printf("서버 닫기 실패\n");
}
}
}
|