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<form name='upload_form' method='post' action='/cgi-bin/upload.cgi' enctype='multipart/form-data' target='hidden_frame'>"); // target='_blank'
<input type='file' id='upload_file' name='upload_file' maxlength='128' size='15'/>
<input type='button' onclick='uploadClick(this.form);' align='center' name='upload_commit' maxlength='128' size='45' value='升级' style = 'height:20px'/>
<iframe id='hidden_frame' name='hidden_frame' style='display:none'></iframe>
</form>
function uploadClick(obj) {
var upload_file = Fid("upload_file").getAttribute("value").Trim();
if (upload_file == "") {
Fid("upload_file").focus();
alert("升级文件不能为空!");
return;
}
obj.submit();
}
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <stdarg.h>
#include <sys/time.h>
#include <time.h>
#include "cgic.h"
#include "cmc_pub.h"
#define MAX_FILE_BUF_LEN 1024
int cgiMain(void)
{
cgiFilePtr file;
int targetFile;
mode_t mode;
char name[128] = {0};
char fileNameOnServer[64] = {0};
char contentType[1024] = {0};
char buffer[MAX_FILE_BUF_LEN] = {0};
char cmd[256] = {0};
char *tmpStr = NULL;
int size;
int got,t;
int ret = 0;
char errBuffer[64] = {0};
do
{
cgiHeaderContentType("text/html");
printf("\n\n");
// 取得html页面中file元素的值,应该是文件在客户机上的路径名
if ((ret = cgiFormFileName("upload_file", name, sizeof(name))) != cgiFormSuccess)
{
sprintf(errBuffer, "%s", "获取升级文件名失败!");
cmc_write_log("could not retrieve filename, ret: %d", ret);
break;
}
if ((ret = cgiFormFileSize("upload_file", &size)) != cgiFormSuccess)
{
sprintf(errBuffer, "%s", "获取升级文件大小失败!");
cmc_write_log("could not get file[%s] size, ret: %d", name, ret);
break;
}
cmc_write_log("file: %s, size: %d", name, size);
// 取得文件类型,不过本例中并未使用
cgiFormFileContentType("upload_file", contentType, sizeof(contentType));
// 目前文件存在于系统临时文件夹中,通常为/tmp,通过该命令打开临时文件。临时文件的名字与用户文件的名字不同,所以不能通过路径/tmp/userfilename的方式获得文件
if ((ret = cgiFormFileOpen("upload_file", &file)) != cgiFormSuccess)
{
sprintf(errBuffer, "%s", "打开升级文件失败!");
cmc_write_log("could not open the file, ret: %d", ret);
break;
}
t = -1;
// 从路径名解析出用户文件名
while (1)
{
tmpStr = strstr(name+t+1, "\\");
if (NULL == tmpStr)
{
tmpStr = strstr(name+t+1, "/");//if "\\" is not path separator, try "/"
}
if (NULL != tmpStr)
{
t=(int)(tmpStr-name);
}
else
{
break;
}
}
// cmc_upgrade.tar: epon和web.tar.bz2
strcpy(fileNameOnServer, "/var/tmp/");
strcat(fileNameOnServer, name+t+1);
cmc_write_log("fileNameOnServer: %s, t: %d", fileNameOnServer, t);
mode = S_IRWXU|S_IRGRP|S_IROTH;
// 在当前目录下建立新的文件,第一个参数实际上是路径名,此处的含义是在cgi程序所在的目录(当前目录))建立新文件
targetFile = open(fileNameOnServer, O_RDWR|O_CREAT|O_TRUNC|O_APPEND, mode);
if (targetFile < 0)
{
ret = -1;
sprintf(errBuffer, "%s", "创建新文件失败!");
cmc_write_log("could not create the new file, %s",fileNameOnServer);
break;
}
// 从系统临时文件中读出文件内容,并放到刚创建的目标文件中
while (cgiFormFileRead(file, buffer, MAX_FILE_BUF_LEN, &got) == cgiFormSuccess)
{
if (got > 0)
{
write(targetFile, buffer, got);
}
}
cgiFormFileClose(file);
close(targetFile);
cmc_write_log("File \"%s\" has been uploaded",fileNameOnServer);
}while(0);
if(errBuffer[0] != '\0')
{
printf("<script type='text/javascript' language='javascript'>alert('上传失败,%s');</script>", errBuffer);
}
else
{
printf("<script type='text/javascript' language='javascript'>alert('上传成功!');</script>");
}
return ret;
}