Delphi DLL

Create a Temporary Public Link to a DropBox File

See more Dropbox Examples

Get a temporary link to stream content of a file. This link will expire in four hours and afterwards you will get 410 Gone. Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, StringBuilder, HttpResponse, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
http: HCkHttp;
json: HCkJsonObject;
resp: HCkHttpResponse;
sbResponseBody: HCkStringBuilder;
jResp: HCkJsonObject;
respStatusCode: Integer;
template_id: PWideChar;
j: Integer;
count_j: Integer;
name: PWideChar;
value: PWideChar;
metadataName: PWideChar;
metadataId: PWideChar;
metadataClient_modified: PWideChar;
metadataServer_modified: PWideChar;
metadataRev: PWideChar;
metadataSize: Integer;
metadataPath_lower: PWideChar;
metadataPath_display: PWideChar;
metadataSharing_infoRead_only: Boolean;
metadataSharing_infoParent_shared_folder_id: PWideChar;
metadataSharing_infoModified_by: PWideChar;
metadataIs_downloadable: Boolean;
metadataHas_explicit_shared_members: Boolean;
metadataContent_hash: PWideChar;
link: PWideChar;
i: Integer;
count_i: Integer;

begin
success := False;

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

http := CkHttp_Create();

// Implements the following CURL command:

// curl -X POST https://api.dropboxapi.com/2/files/get_temporary_link \
//     --header "Authorization: Bearer DROPBOX_ACCESS_TOKEN" \
//     --header "Content-Type: application/json" \
//     --data "{\"path\": \"/video.mp4\"}"

// Use this online tool to generate code from sample JSON:
// Generate Code to Create JSON

// The following JSON is sent in the request body.

// {
//   "path": "/video.mp4"
// }

json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'path','/video.mp4');

CkHttp_SetRequestHeader(http,'Authorization','Bearer DROPBOX_ACCESS_TOKEN');

resp := CkHttpResponse_Create();
success := CkHttp_HttpJson(http,'POST','https://api.dropboxapi.com/2/files/get_temporary_link',json,'application/json',resp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

sbResponseBody := CkStringBuilder_Create();
CkHttpResponse_GetBodySb(resp,sbResponseBody);
jResp := CkJsonObject_Create();
CkJsonObject_LoadSb(jResp,sbResponseBody);
CkJsonObject_putEmitCompact(jResp,False);

Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(CkJsonObject__emit(jResp));

respStatusCode := CkHttpResponse_getStatusCode(resp);
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(CkHttpResponse__header(resp));
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// {
//   "metadata": {
//     "name": "Prime_Numbers.txt",
//     "id": "id:a4ayc_80_OEAAAAAAAAAXw",
//     "client_modified": "2015-05-12T15:50:38Z",
//     "server_modified": "2015-05-12T15:50:38Z",
//     "rev": "a1c10ce0dd78",
//     "size": 7212,
//     "path_lower": "/homework/math/prime_numbers.txt",
//     "path_display": "/Homework/math/Prime_Numbers.txt",
//     "sharing_info": {
//       "read_only": true,
//       "parent_shared_folder_id": "84528192421",
//       "modified_by": "dbid:AAH4f99T0taONIb-OurWxbNQ6ywGRopQngc"
//     },
//     "is_downloadable": true,
//     "property_groups": [
//       {
//         "template_id": "ptid:1a5n2i6d3OYEAAAAAAAAAYa",
//         "fields": [
//           {
//             "name": "Security Policy",
//             "value": "Confidential"
//           }
//         ]
//       }
//     ],
//     "has_explicit_shared_members": false,
//     "content_hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
//   },
//   "link": "https://dl.dropboxusercontent.com/apitl/1/YXNkZmFzZGcyMzQyMzI0NjU2NDU2NDU2"
// }

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

metadataName := CkJsonObject__stringOf(jResp,'metadata.name');
metadataId := CkJsonObject__stringOf(jResp,'metadata.id');
metadataClient_modified := CkJsonObject__stringOf(jResp,'metadata.client_modified');
metadataServer_modified := CkJsonObject__stringOf(jResp,'metadata.server_modified');
metadataRev := CkJsonObject__stringOf(jResp,'metadata.rev');
metadataSize := CkJsonObject_IntOf(jResp,'metadata.size');
metadataPath_lower := CkJsonObject__stringOf(jResp,'metadata.path_lower');
metadataPath_display := CkJsonObject__stringOf(jResp,'metadata.path_display');
metadataSharing_infoRead_only := CkJsonObject_BoolOf(jResp,'metadata.sharing_info.read_only');
metadataSharing_infoParent_shared_folder_id := CkJsonObject__stringOf(jResp,'metadata.sharing_info.parent_shared_folder_id');
metadataSharing_infoModified_by := CkJsonObject__stringOf(jResp,'metadata.sharing_info.modified_by');
metadataIs_downloadable := CkJsonObject_BoolOf(jResp,'metadata.is_downloadable');
metadataHas_explicit_shared_members := CkJsonObject_BoolOf(jResp,'metadata.has_explicit_shared_members');
metadataContent_hash := CkJsonObject__stringOf(jResp,'metadata.content_hash');
link := CkJsonObject__stringOf(jResp,'link');
i := 0;
count_i := CkJsonObject_SizeOfArray(jResp,'metadata.property_groups');
while i < count_i do
  begin
    CkJsonObject_putI(jResp,i);
    template_id := CkJsonObject__stringOf(jResp,'metadata.property_groups[i].template_id');
    j := 0;
    count_j := CkJsonObject_SizeOfArray(jResp,'metadata.property_groups[i].fields');
    while j < count_j do
      begin
        CkJsonObject_putJ(jResp,j);
        name := CkJsonObject__stringOf(jResp,'metadata.property_groups[i].fields[j].name');
        value := CkJsonObject__stringOf(jResp,'metadata.property_groups[i].fields[j].value');
        j := j + 1;
      end;

    i := i + 1;
  end;

CkHttp_Dispose(http);
CkJsonObject_Dispose(json);
CkHttpResponse_Dispose(resp);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jResp);

end;