CMakeLua/Utilities/cmcurl-7.19.0/docs/examples/ftpupload.c

   1 /*****************************************************************************
   2  *                                  _   _ ____  _
   3  *  Project                     ___| | | |  _ \| |
   4  *                             / __| | | | |_) | |
   5  *                            | (__| |_| |  _ <| |___
   6  *                             \___|\___/|_| \_\_____|
   7  *
   8  * $Id: ftpupload.c,v 1.1.1.1 2008-09-23 16:32:05 hoffman Exp $
   9  */
  10
  11 #include <stdio.h>
  12 #include <string.h>
  13
  14 #include <curl/curl.h>
  15 #include <sys/types.h>
  16 #include <sys/stat.h>
  17 #include <fcntl.h>
  18 #include <errno.h>
  19 #ifdef WIN32
  20 #include <io.h>
  21 #else
  22 #include <unistd.h>
  23 #endif
  24
  25 /*
  26  * This example shows an FTP upload, with a rename of the file just after
  27  * a successful upload.
  28  *
  29  * Example based on source code provided by Erick Nuwendam. Thanks!
  30  */
  31
  32 #define LOCAL_FILE      "/tmp/uploadthis.txt"
  33 #define UPLOAD_FILE_AS  "while-uploading.txt"
  34 #define REMOTE_URL      "ftp://localhost/"  UPLOAD_FILE_AS
  35 #define RENAME_FILE_TO  "renamed-and-fine.txt"
  36
  37 /* NOTE: if you want this example to work on Windows with libcurl as a
  38    DLL, you MUST also provide a read callback with CURLOPT_READFUNCTION.
  39    Failing to do so will give you a crash since a DLL may not use the
  40    variable's memory when passed in to it from an app like this. */
  41 static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *stream)
  42 {
  43   /* in real-world cases, this would probably get this data differently
  44      as this fread() stuff is exactly what the library already would do
  45      by default internally */
  46   size_t retcode = fread(ptr, size, nmemb, stream);
  47
  48   fprintf(stderr, "*** We read %d bytes from file\n", retcode);
  49   return retcode;
  50 }
  51
  52 int main(int argc, char **argv)
  53 {
  54   CURL *curl;
  55   CURLcode res;
  56   FILE *hd_src;
  57   struct stat file_info;
  58
  59   struct curl_slist *headerlist=NULL;
  60   static const char buf_1 [] = "RNFR " UPLOAD_FILE_AS;
  61   static const char buf_2 [] = "RNTO " RENAME_FILE_TO;
  62
  63   /* get the file size of the local file */
  64   if(stat(LOCAL_FILE, &file_info)) {
  65     printf("Couldnt open '%s': %s\n", LOCAL_FILE, strerror(errno));
  66     return 1;
  67   }
  68   printf("Local file size: %ld bytes.\n", file_info.st_size);
  69
  70   /* get a FILE * of the same file */
  71   hd_src = fopen(LOCAL_FILE, "rb");
  72
  73   /* In windows, this will init the winsock stuff */
  74   curl_global_init(CURL_GLOBAL_ALL);
  75
  76   /* get a curl handle */
  77   curl = curl_easy_init();
  78   if(curl) {
  79     /* build a list of commands to pass to libcurl */
  80     headerlist = curl_slist_append(headerlist, buf_1);
  81     headerlist = curl_slist_append(headerlist, buf_2);
  82
  83     /* we want to use our own read function */
  84     curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
  85
  86     /* enable uploading */
  87     curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
  88
  89     /* specify target */
  90     curl_easy_setopt(curl,CURLOPT_URL, REMOTE_URL);
  91
  92     /* pass in that last of FTP commands to run after the transfer */
  93     curl_easy_setopt(curl, CURLOPT_POSTQUOTE, headerlist);
  94
  95     /* now specify which file to upload */
  96     curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);
  97
  98     /* Set the size of the file to upload (optional).  If you give a *_LARGE
  99        option you MUST make sure that the type of the passed-in argument is a
 100        curl_off_t. If you use CURLOPT_INFILESIZE (without _LARGE) you must
 101        make sure that to pass in a type 'long' argument. */
 102     curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
 103                      (curl_off_t)file_info.st_size);
 104
 105     /* Now run off and do what you've been told! */
 106     res = curl_easy_perform(curl);
 107
 108     /* clean up the FTP commands list */
 109     curl_slist_free_all (headerlist);
 110
 111     /* always cleanup */
 112     curl_easy_cleanup(curl);
 113   }
 114   fclose(hd_src); /* close the local file */
 115
 116   curl_global_cleanup();
 117   return 0;
 118 }