curl实现SFTP上传下载文件
使用curl库实现SFTP上传与下载文件功能
环境：
1、LSB Version: 1.3
Distributor ID: CentOS
Description: CentOS release 4.0 (Final)
Release: 4.0
Codename: Final
Linux version 2.6.9-5.0.3.EL (buildcentos@build4-1386) (gcc version 3.4.3 20041212 (Red Hat 3.4.3-9.EL4)) #1 Sat Feb 19 18:26:49 CST 2005
2、LSB Version: 1.3
Distributor ID: CentOS
Description: CentOS release 4.0 (Final)
Release: 4.0
Codename: Final
Linux version 2.6.9-5.0.3.EL (buildcentos@x8664-build) (gcc version 3.4.3 20041212 (Red Hat 3.4.3-9.EL4)) #1 Sat Feb 19 15:25:58 CST 2005
3、curl
curl 7.12.1 (i686-redhat-linux-gnu) libcurl/7.12.1 OpenSSL/0.9.7a zlib/1.2.1.2 libidn/0.5.6
Protocols: ftp gopher telnet dict ldap http file https ftps
Features: GSS-Negotiate IDN IPv6 Largefile NTLM SSL lib
4、
openssh.i386 3.9p1-8.RHEL4.1 installed
openssh.x86_64 3.9p1-8.RHEL4.1 installed
测试程序如下：
#pragma once
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
/*
g++ curl_test.cpp -I /usr/local/curl/include/ -I /usr/local/libssh2/include/ -I /usr/local/openssl/include/ -L /usr/local/curl/lib/ -L /usr/local/libssh2/lib/ -L /usr/local/openssl/lib/ -lrt -lcurl -lssh2 -lssl -lcrypto -ldl -lz
*/
using namespace std;
void gloale_init()
{
curl_global_init(CURL_GLOBAL_DEFAULT);
return;
}
size_t read_callback(void *ptr, size_t size, size_t nmemb, void *stream) //回调函数
{
curl_off_t nread;
size_t retcode = fread(ptr, size, nmemb, (FILE*)(stream));
nread = (curl_off_t)retcode;
return retcode;
}
size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream)
{
int written = fwrite(ptr, size, nmemb, (FILE *)stream);
return written;
}
size_t upload(const char * user,const char * passwd,const char * url, const char * path)
{
CURL *curl;
CURLcode res;
string s1(user);
string s2(passwd);
string s3 = s1 + ":" + s2;
cout<
FILE* pSendFile = fopen(path,"r");
if(pSendFile == NULL)
{
printf("open failed\n");
return 1;
}
printf("------------\n");
fseek(pSendFile, 0L, SEEK_END);
printf("------------\n");
size_t iFileSize = ftell(pSendFile);
printf("------------\n");
fseek(pSendFile, 0L, SEEK_SET);
printf("begin easy_init\n");
curl = curl_easy_init();
printf("curl_easy_init success\n");
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL,url);
curl_easy_setopt(curl, CURLOPT_USERPWD,s3.c_str());
curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
curl_easy_setopt(curl, CURLOPT_READDATA, pSendFile);
curl_easy_setopt(curl, CURLOPT_FTP_CREATE_MISSING_DIRS, 0);
curl_easy_setopt(curl, CURLOPT_UPLOAD, 1);
curl_easy_setopt(curl, CURLOPT_INFILESIZE, iFileSize);
printf("curl_easy_setopt success");
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
if(CURLE_OK != res)
{
fprintf(stdout, "curl told us %d\n", res);
}
}
fclose(pSendFile);
curl_global_cleanup();
return 0;
}
int download(const char * user,const char * passw,const char * url,const char * filePath)
{
CURL *curl;
CURLcode curl_code;
string s1(user);
string s2(passw);
string s3 = s1 + ":" + s2;
cout<
curl_easy_setopt(curl, CURLOPT_URL, url);
// curl_easy_setopt(curl, CURLOPT_USERPWD, s3.c_str());
curl_easy_setopt(curl, CURLOPT_USERNAME, user);
curl_easy_setopt(curl, CURLOPT_PASSWORD, passw);
FILE *fp = fopen(filePath, "wb+");
if (NULL == fp)
{
curl_easy_cleanup(curl);
printf("fopen failed\n");
return -1;
}
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);
curl_code = curl_easy_perform(curl);
printf("curl_code = %d\n",curl_code);
if (CURLE_OK != curl_code)
{
printf("perform failed\n");
curl_easy_cleanup(curl);
fclose(fp);
remove(filePath);
return -1;
}
curl_easy_cleanup(curl);
fclose(fp);
return 0;
}
int main()
{
gloale_init();
char * serverip = "192.168.248.135";
char * port = "22";
char * serverpath = "/root/CentOS-Base.repo";
char *user = "root";
char * passwd = "123456";
char * savepath = "write_file";
char url[125] = {0};
sprintf(url,"sftp://%s:%s/%s",serverip,port,serverpath);
printf("url: %s\n", url);
//download(user,passwd,url,savepath);
upload(user,passwd,url,savepath);
return 0;
}