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Annotation of embedaddon/curl/docs/examples/ftpuploadfrommem.c, revision 1.1

1.1     ! misho       1: /***************************************************************************
        !             2:  *                                  _   _ ____  _
        !             3:  *  Project                     ___| | | |  _ \| |
        !             4:  *                             / __| | | | |_) | |
        !             5:  *                            | (__| |_| |  _ <| |___
        !             6:  *                             \___|\___/|_| \_\_____|
        !             7:  *
        !             8:  * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
        !             9:  *
        !            10:  * This software is licensed as described in the file COPYING, which
        !            11:  * you should have received as part of this distribution. The terms
        !            12:  * are also available at https://curl.haxx.se/docs/copyright.html.
        !            13:  *
        !            14:  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
        !            15:  * copies of the Software, and permit persons to whom the Software is
        !            16:  * furnished to do so, under the terms of the COPYING file.
        !            17:  *
        !            18:  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
        !            19:  * KIND, either express or implied.
        !            20:  *
        !            21:  ***************************************************************************/
        !            22: /* <DESC>
        !            23:  * FTP upload a file from memory
        !            24:  * </DESC>
        !            25:  */
        !            26: #include <stdio.h>
        !            27: #include <string.h>
        !            28: #include <curl/curl.h>
        !            29: 
        !            30: static const char data[]=
        !            31:   "Lorem ipsum dolor sit amet, consectetur adipiscing elit. "
        !            32:   "Nam rhoncus odio id venenatis volutpat. Vestibulum dapibus "
        !            33:   "bibendum ullamcorper. Maecenas finibus elit augue, vel "
        !            34:   "condimentum odio maximus nec. In hac habitasse platea dictumst. "
        !            35:   "Vestibulum vel dolor et turpis rutrum finibus ac at nulla. "
        !            36:   "Vivamus nec neque ac elit blandit pretium vitae maximus ipsum. "
        !            37:   "Quisque sodales magna vel erat auctor, sed pellentesque nisi "
        !            38:   "rhoncus. Donec vehicula maximus pretium. Aliquam eu tincidunt "
        !            39:   "lorem.";
        !            40: 
        !            41: struct WriteThis {
        !            42:   const char *readptr;
        !            43:   size_t sizeleft;
        !            44: };
        !            45: 
        !            46: static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *userp)
        !            47: {
        !            48:   struct WriteThis *upload = (struct WriteThis *)userp;
        !            49:   size_t max = size*nmemb;
        !            50: 
        !            51:   if(max < 1)
        !            52:     return 0;
        !            53: 
        !            54:   if(upload->sizeleft) {
        !            55:     size_t copylen = max;
        !            56:     if(copylen > upload->sizeleft)
        !            57:       copylen = upload->sizeleft;
        !            58:     memcpy(ptr, upload->readptr, copylen);
        !            59:     upload->readptr += copylen;
        !            60:     upload->sizeleft -= copylen;
        !            61:     return copylen;
        !            62:   }
        !            63: 
        !            64:   return 0;                          /* no more data left to deliver */
        !            65: }
        !            66: 
        !            67: int main(void)
        !            68: {
        !            69:   CURL *curl;
        !            70:   CURLcode res;
        !            71: 
        !            72:   struct WriteThis upload;
        !            73: 
        !            74:   upload.readptr = data;
        !            75:   upload.sizeleft = strlen(data);
        !            76: 
        !            77:   /* In windows, this will init the winsock stuff */
        !            78:   res = curl_global_init(CURL_GLOBAL_DEFAULT);
        !            79:   /* Check for errors */
        !            80:   if(res != CURLE_OK) {
        !            81:     fprintf(stderr, "curl_global_init() failed: %s\n",
        !            82:             curl_easy_strerror(res));
        !            83:     return 1;
        !            84:   }
        !            85: 
        !            86:   /* get a curl handle */
        !            87:   curl = curl_easy_init();
        !            88:   if(curl) {
        !            89:     /* First set the URL, the target file */
        !            90:     curl_easy_setopt(curl, CURLOPT_URL,
        !            91:                      "ftp://example.com/path/to/upload/file");
        !            92: 
        !            93:     /* User and password for the FTP login */
        !            94:     curl_easy_setopt(curl, CURLOPT_USERPWD, "login:secret");
        !            95: 
        !            96:     /* Now specify we want to UPLOAD data */
        !            97:     curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
        !            98: 
        !            99:     /* we want to use our own read function */
        !           100:     curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
        !           101: 
        !           102:     /* pointer to pass to our read function */
        !           103:     curl_easy_setopt(curl, CURLOPT_READDATA, &upload);
        !           104: 
        !           105:     /* get verbose debug output please */
        !           106:     curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
        !           107: 
        !           108:     /* Set the expected upload size. */
        !           109:     curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
        !           110:                      (curl_off_t)upload.sizeleft);
        !           111: 
        !           112:     /* Perform the request, res will get the return code */
        !           113:     res = curl_easy_perform(curl);
        !           114:     /* Check for errors */
        !           115:     if(res != CURLE_OK)
        !           116:       fprintf(stderr, "curl_easy_perform() failed: %s\n",
        !           117:               curl_easy_strerror(res));
        !           118: 
        !           119:     /* always cleanup */
        !           120:     curl_easy_cleanup(curl);
        !           121:   }
        !           122:   curl_global_cleanup();
        !           123:   return 0;
        !           124: }