110 lines
3.6 KiB
C
110 lines
3.6 KiB
C
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#include "common.h"
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typedef struct ftp_file
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{
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char cmd[MAXLINE]; // FTP命令
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char filename[MAXLINE]; // 文件名参数
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char fileSize[MAXLINE]; // 文件大小参数
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} ftp_file_t;
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int main(int argc, char **argv)
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{
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int client_sock, port;
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char *host, buf[MAXLINE];
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rio_t rio;
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if (argc != 3) {
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fprintf(stderr, "usage: %s <host><port>\n", argv[0]);
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exit(1);
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}
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host = argv[1];
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port = atoi(argv[2]);
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client_sock = open_client_sock(host, port);
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if(client_sock==-1) {
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fputs("Error to connect the Server\n",stdout);
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exit(1);
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}
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while (fgets(buf, MAXLINE, stdin) != NULL) {
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ftp_file_t file;
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FILE *fp;
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long fileSize;
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char filePath[MAXLINE] = "./"; // 假设当前目录下有文件
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char *token = strtok(buf, " \t\n"); // 提取FTP命令
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if (strcmp(token, "get") == 0 || strcmp(token, "put") == 0) {
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strncpy(file.cmd, token, MAXLINE - 1);
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file.cmd[MAXLINE - 1] = '\0';
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} else {
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printf("Unsupported command: %s\n", token);
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continue; // 如果不是get或put命令，跳过处理
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}
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token = strtok(NULL, " \t\n"); // 提取文件名参数
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if (token != NULL) {
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strncpy(file.filename, token, MAXLINE - 1);
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file.filename[MAXLINE - 1] = '\0';
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} else {
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printf("Filename is required for command: %s\n", file.cmd);
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continue; // 如果没有提供文件名参数，跳过处理
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}
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if (strcmp(file.cmd,"put")==0)
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{
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strcat(filePath, file.filename); // 构建完整文件路径
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fp = fopen(filePath, "r");
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if (fp == NULL) {
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perror("Error opening file");
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continue;
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} else {
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fseek(fp, 0, SEEK_END);
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fileSize = ftell(fp);
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fclose(fp);
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snprintf(file.fileSize, MAXLINE, "%ld", fileSize); // 将文件大小转换为字符串并存储
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}
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send(client_sock, &file, sizeof(ftp_file_t), 0);
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fp = fopen(filePath, "r");
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if (fp == NULL) {
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perror("Error opening file for reading");
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} else {
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char *fileContent = malloc(fileSize);
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fread(fileContent, 1, fileSize, fp); // 从文件中读取内容到缓冲区
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send(client_sock, fileContent, fileSize, 0); // 发送文件内容
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free(fileContent);
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recv(client_sock, buf, MAXLINE, 0);
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fputs(buf, stdout);
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fclose(fp);
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}
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}
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else if (strcmp(file.cmd,"get")==0)
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{
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send(client_sock, &file, sizeof(ftp_file_t), 0);
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recv(client_sock, &file, sizeof(ftp_file_t), 0); // 接收文件信息
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int fileSize = atoi(file.fileSize);
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if (fileSize > 0) {
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char *fileContent = malloc(fileSize); // 根据文件大小分配内存
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recv(client_sock, fileContent, fileSize, 0); // 接收文件内容
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FILE *fp = fopen(file.filename, "w");
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if (fp != NULL) {
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fwrite(fileContent, 1, fileSize, fp); // 将接收到的内容写入文件
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fclose(fp);
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} else {
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perror("Error creating file");
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}
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free(fileContent); // 释放内存
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}
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recv(client_sock, buf, MAXLINE, 0);
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fputs(buf, stdout);
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}
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}
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close(client_sock);
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exit(0);
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}
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