标题: [网络工具] 原创命令行下载工具 [打印本页]
作者: sz1121 时间: 2012-10-5 13:36 标题: 原创命令行下载工具
http://bcn.bathome.net/s/tool/index.html?key=down
举例:- down http://dl_dir.qq.com/qqfile/qq/QQ2012/QQ2012.exe
复制代码
作者: CrLf 时间: 2012-10-5 16:17
求源码
作者: lllsoslll 时间: 2012-10-5 19:24
这么单一的功能,48K体积 太夸张了, 论坛里有700 字节的下载工具,并且有源码
作者: Seder 时间: 2012-10-5 22:27
WSAStartup
socket
gethostbyname
inet_ntoa
inet_addr
ntohs
socket
connect
send
recv
作者: Demon 时间: 2012-10-5 23:35
本帖最后由 Demon 于 2012-10-5 23:51 编辑
源码大概是这样(该代码仅为汇编还原,不代表本人的编码水平)- #include <stdio.h>
- #include <string.h>
- #include <winsock2.h>
- #include <windows.h>
-
- SOCKET g_socket;
- char backspace[256], buffer[1024];
- int crlf, total, count;
- int len = 1;
-
- int init()
- {
- int result = 0;
- struct WSAData WSAData;
-
- memset(&WSAData, 0, sizeof(WSAData));
- if (WSAStartup(MAKEWORD(2, 2), &WSAData))
- result = WSAGetLastError();
- else
- g_socket = socket(AF_INET, SOCK_STREAM, 0);
-
- return result;
- }
-
- char *getip(char *name)
- {
- struct hostent *h = gethostbyname(name);
- return inet_ntoa(*(struct in_addr *)h->h_addr_list[0]);
- }
-
- int cleanup()
- {
- WSACleanup();
- return 0;
- }
-
- int download(char *host, u_short port, char *path)
- {
- char *filename, *ip;
- SOCKADDR a;
- char buf[256], c;
- FILE *fp;
- SOCKET s;
- int cb;
-
- if (!init()) {
- ip = getip(host);
-
- filename = strrchr(path, '/');
- if (filename)
- filename++;
- else
- filename = "index.htm";
-
- a.sa_family = AF_INET;
- *(DWORD *)&a.sa_data[2] = inet_addr(ip);
- *(WORD *)&a.sa_data[0] = htons(port);
-
- s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
- if (connect(s, &a, sizeof(a)))
- return WSAGetLastError();
-
- memset(buf, 0, 256);
- sprintf(buf, "GET /%s HTTP/1.1\r\nhost:%s\r\naccept:*/*\r\n\r\n", path, ip);
- send(s, buf, strlen(buf), 0);
-
- fp = fopen(filename, "wb");
- if (!fp) {
- printf("can't open file %s\r\n", filename);
- return 0;
- }
-
- while (1) {
- cb = recv(s, &c, len, 0);
- if (!cb || cb == -1)
- break;
-
- if (crlf == 3) {
- len = 256;
- total += cb;
- printf("%s%s size:%d bytes %.3f kb", backspace, filename, total, (double)total / 1024);
- if (!fwrite(&c, cb, 1, fp))
- return 0;
- } else {
- if (count < 1024)
- buffer[count++] = c;
- if (c == '\n') {
- crlf++;
- } else {
- if (crlf && c == '\r')
- crlf++;
- else
- crlf = 0;
- }
- }
- }
-
- printf("\r\n\r\n-----connect closed!-----\r\n\r\n");
- fclose(fp);
- printf("\r\n%s\r\n", buffer);
- printf("\r\n-----get more info plz visit http://9674758.qzone.qq.com-----\r\n");
- cleanup();
- }
- return 0;
- }
-
- int main(int argc, char **argv)
- {
- char *p1, *p2;
-
- if (argc != 1) {
- if ((p1 = strstr(argv[1], "http://")) != NULL ||
- (p1 = strstr(argv[1], "HTTP://")) != NULL) {
-
- p1 += 7;
- p2 = strchr(p1, '/');
- if (p2 == NULL || (*p2 = 0, ++p2 == '\0'))
- p2 = "index.htm";
-
- memset(backspace, 8, 255);
- download(p1, 80, p2);
- }
- }
- return 0;
- }
复制代码
作者: CrLf 时间: 2012-10-6 00:13
呃,这样也可以...真恐怖
膜拜楼上
作者: sz1121 时间: 2012-10-6 00:21
无语了……
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