C

Dropbox File Streaming Upload

See more Dropbox Examples

Upload a file to Drobox using a file stream. This example can upload files up to 150MB. Larger files must be uploaded with an upload session (upload_session/start). C

#include <C_CkRest.h>
#include <C_CkJsonObject.h>
#include <C_CkStream.h>
#include <C_CkDateTime.h>
#include <C_CkDtObj.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkRest rest;
    HCkJsonObject json;
    HCkStream fileStream;
    const char *responseStr;
    HCkJsonObject jsonResp;
    int size;
    const char *rev;
    const char *clientModified;
    HCkDateTime ckdt;
    BOOL bLocalTime;
    HCkDtObj dt;

    success = FALSE;

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    //  A Dropbox access token should have been previously obtained.
    //  Dropbox access tokens do not expire.
    //  See Dropbox Access Token.

    rest = CkRest_Create();

    //  Connect to Dropbox
    success = CkRest_Connect(rest,"content.dropboxapi.com",443,TRUE,TRUE);
    if (success == FALSE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        return;
    }

    //  Add request headers.
    CkRest_AddHeader(rest,"Content-Type","application/octet-stream");
    CkRest_AddHeader(rest,"Authorization","Bearer DROPBOX_ACCESS_TOKEN");

    //  The upload "parameters" contained in JSON passed in an HTTP request header.
    //  This is the JSON to be added in this example:
    //  { 
    //     "path": "/Homework/lit/hamlet.xml",
    //     "mode": "add",
    //     "autorename": true,
    //     "mute": false
    //  }

    json = CkJsonObject_Create();
    CkJsonObject_AppendString(json,"path","/Homework/lit/hamlet.xml");
    CkJsonObject_AppendString(json,"mode","add");
    CkJsonObject_AppendBool(json,"autorename",TRUE);
    CkJsonObject_AppendBool(json,"mute",FALSE);
    CkRest_AddHeader(rest,"Dropbox-API-Arg",CkJsonObject_emit(json));

    //  Almost ready to go...
    //  Let's setup a file stream to point to a file.
    fileStream = CkStream_Create();
    CkStream_putSourceFile(fileStream,"qa_data/xml/hamlet.xml");

    //  Do the upload.  The URL is https://content.dropboxapi.com/2/files/upload.
    //  We already connected to content.dropboxapi.com using TLS (i.e. HTTPS),
    //  so now we only need to specify the path "/2/files/upload".

    //  Note: The file is streamed directly from disk.  (The entire
    //  file will not be loaded into memory.)
    responseStr = CkRest_fullRequestStream(rest,"POST","/2/files/upload",fileStream);
    if (CkRest_getLastMethodSuccess(rest) == FALSE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        CkJsonObject_Dispose(json);
        CkStream_Dispose(fileStream);
        return;
    }

    //  When successful, Dropbox responds with a 200 response code.
    if (CkRest_getResponseStatusCode(rest) != 200) {
        //  Examine the request/response to see what happened.
        printf("response status code = %d\n",CkRest_getResponseStatusCode(rest));
        printf("response status text = %s\n",CkRest_responseStatusText(rest));
        printf("response header: %s\n",CkRest_responseHeader(rest));
        printf("response body (if any): %s\n",responseStr);
        printf("---\n");
        printf("LastRequestStartLine: %s\n",CkRest_lastRequestStartLine(rest));
        printf("LastRequestHeader: %s\n",CkRest_lastRequestHeader(rest));
        CkRest_Dispose(rest);
        CkJsonObject_Dispose(json);
        CkStream_Dispose(fileStream);
        return;
    }

    //  The response is JSON.
    jsonResp = CkJsonObject_Create();
    CkJsonObject_putEmitCompact(jsonResp,FALSE);
    CkJsonObject_Load(jsonResp,responseStr);

    //  Show the JSON response.
    printf("%s\n",CkJsonObject_emit(jsonResp));

    //  Returns JSON that looks like this:
    //  { 
    //    "name": "hamlet.xml",
    //    "path_lower": "/homework/lit/hamlet.xml",
    //    "path_display": "/Homework/lit/hamlet.xml",
    //    "id": "id:74FkdeNuyKAAAAAAAAAAAQ",
    //    "client_modified": "2016-06-02T23:19:00Z",
    //    "server_modified": "2016-06-02T23:19:00Z",
    //    "rev": "9482db15f",
    //    "size": 279658
    //  }

    //  Sample code to get data from the JSON response:
    size = CkJsonObject_IntOf(jsonResp,"size");
    printf("size = %d\n",size);

    rev = CkJsonObject_stringOf(jsonResp,"rev");
    printf("rev = %s\n",rev);

    clientModified = CkJsonObject_stringOf(jsonResp,"client_modified");
    ckdt = CkDateTime_Create();
    CkDateTime_SetFromTimestamp(ckdt,clientModified);
    bLocalTime = TRUE;
    dt = CkDtObj_Create();
    CkDateTime_ToDtObj(ckdt,bLocalTime,dt);

    printf("%d/%d/%d %d:%d\n",CkDtObj_getDay(dt),CkDtObj_getMonth(dt),CkDtObj_getYear(dt),CkDtObj_getHour(dt),CkDtObj_getMinute(dt));


    CkRest_Dispose(rest);
    CkJsonObject_Dispose(json);
    CkStream_Dispose(fileStream);
    CkJsonObject_Dispose(jsonResp);
    CkDateTime_Dispose(ckdt);
    CkDtObj_Dispose(dt);

    }