libcurl 用戶端執行個體

參考庫

• libftp (though it's in C)
• ftplib (again, looks like C)
• libCurl seems to have FTP capabilities.
• ace

 

源碼：main.c

#include <stdio.h>#include <string.h>#include <curl/curl.h>#include <sys/types.h>#include <sys/stat.h>#include <fcntl.h>#include <errno.h>#ifdef WIN32#include <io.h>#else#include <unistd.h>#endif/* * This example shows an FTP upload, with a rename of the file just after * a successful upload. * * Example based on source code provided by Erick Nuwendam. Thanks! */#define LOCAL_FILE      "main.c"#define UPLOAD_FILE_AS  "wkl.c"#define REMOTE_URL      "ftp://127.0.0.1/"  UPLOAD_FILE_AS#define RENAME_FILE_TO  "haaaa.c"#define USERPASSWD      "nobody:lampp"/* NOTE: if you want this example to work on Windows with libcurl as a   DLL, you MUST also provide a read callback with CURLOPT_READFUNCTION.   Failing to do so will give you a crash since a DLL may not use the   variable's memory when passed in to it from an app like this. */static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *stream){  curl_off_t nread;  /* in real-world cases, this would probably get this data differently     as this fread() stuff is exactly what the library already would do     by default internally */  size_t retcode = fread(ptr, size, nmemb, stream);  nread = (curl_off_t)retcode;  fprintf(stderr, "*** We read %" CURL_FORMAT_CURL_OFF_T          " bytes from file\n", nread);  return retcode;}int main(void){  CURL *curl;  CURLcode res;  FILE *hd_src;  struct stat file_info;  curl_off_t fsize;  struct curl_slist *headerlist=NULL;  static const char buf_1 [] = "RNFR " UPLOAD_FILE_AS;  static const char buf_2 [] = "RNTO " RENAME_FILE_TO;  /* get the file size of the local file */  if(stat(LOCAL_FILE, &file_info)) {    printf("Couldnt open '%s': %s\n", LOCAL_FILE, strerror(errno));    return 1;  }  fsize = (curl_off_t)file_info.st_size;  printf("Local file size: %" CURL_FORMAT_CURL_OFF_T " bytes.\n", fsize);  /* get a FILE * of the same file */  hd_src = fopen(LOCAL_FILE, "rb");  /* In windows, this will init the winsock stuff */  curl_global_init(CURL_GLOBAL_ALL);  /* get a curl handle */  curl = curl_easy_init();  if(curl) {    /* build a list of commands to pass to libcurl */          headerlist = curl_slist_append(headerlist, buf_1);    headerlist = curl_slist_append(headerlist, buf_2);    curl_easy_setopt(curl, CURLOPT_USERPWD, USERPASSWD);        /* we want to use our own read function */    curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);    /* enable uploading */    curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);    /* specify target */    curl_easy_setopt(curl,CURLOPT_URL, REMOTE_URL);    /* pass in that last of FTP commands to run after the transfer */    curl_easy_setopt(curl, CURLOPT_POSTQUOTE, headerlist);    /* now specify which file to upload */    curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);    /* Set the size of the file to upload (optional).  If you give a *_LARGE       option you MUST make sure that the type of the passed-in argument is a       curl_off_t. If you use CURLOPT_INFILESIZE (without _LARGE) you must       make sure that to pass in a type 'long' argument. */    curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,                     (curl_off_t)fsize);    /* Now run off and do what you've been told! */    res = curl_easy_perform(curl);    /* clean up the FTP commands list */    curl_slist_free_all (headerlist);    /* always cleanup */    curl_easy_cleanup(curl);  }  fclose(hd_src); /* close the local file */  curl_global_cleanup();  return 0;}

編譯：

gcc -g main.c -o curl -lcurl

 運行：

 ./curlLocal file size: 1762 bytes.*** We read 1762 bytes from file

 

 

參考地址：

      http://curl.haxx.se/libcurl/c/ftpupload.html

     http://wanghaifeng.iteye.com/blog/628630