async Task <byte[]> ITableauVisualServices.DownloadPdfAsync(DownloadPdfOptions options)
{
var handler = new HttpClientHandler
{
CookieContainer = options.Cookies,
UseCookies = true
};
using (var downloadPdfClient = new HttpClient(handler))
{
downloadPdfClient.DefaultRequestHeaders.Referrer = options.ReferrerUri;
downloadPdfClient.DefaultRequestHeaders.TryAddWithoutValidation(
"Upgrade-Insecure-Requests", "1");
var response =
await downloadPdfClient.GetAsync(
new Uri(
$"{TableauSignInOptions.Url}/vizql/w/{options.WorkbookName}/v/{options.ViewName}/tempfile/sessions/{options.SessionId}/?key={options.TempFileKey}&keepfile=yes&attachment=yes&download=true"));
var pdfBytes = await response.Content.ReadAsByteArrayAsync();
return(pdfBytes);
}
}
async Task <DownloadPdfOptions> ITableauVisualServices.CreatePdfAsync(CreatePdfOptions options)
{
Requires.NonNull(options.WorkbookName, nameof(options.WorkbookName));
Requires.NonNull(options.WorksheetName, nameof(options.WorksheetName));
Requires.NonNull(options.ViewName, nameof(options.ViewName));
var token = (await TrustedTicketGetter.AuthorizeAsync()).Token;
var handler = new HttpClientHandler
{
CookieContainer = new CookieContainer(),
UseCookies = true
};
using (var embedClient = new HttpClient(handler))
{
var uri =
new Uri(
$"{TableauSignInOptions.Url}/trusted/{token}/views/{options.WorkbookName}/{options.ViewName}?:size=1610,31&:embed=y&:showVizHome=n&:jsdebug=y&:bootstrapWhenNotified=y&:tabs=n&:apiID=host0");
embedClient.DefaultRequestHeaders.TryAddWithoutValidation("User Agent",
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36");
embedClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept",
"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
embedClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Encoding", "gzip, deflate, sdch, br");
embedClient.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Language", "en-US,en;q=0.8");
var response = await embedClient.GetAsync(uri);
IEnumerable <string> values;
if (response.Headers.TryGetValues("X-Session-Id", out values))
{
var sessionId = values.First();
var clientEmbedResponseString = await response.Content.ReadAsStringAsync();
var currentWorkbookId = CurrentWorkbookIdExpr.GetGroupValue(clientEmbedResponseString);
var currentViewId = CurrentViewIdExpr.GetGroupValue(clientEmbedResponseString);
var sheetId = SheetIdExpr.GetGroupValue(clientEmbedResponseString) ?? options.WorksheetName;
var lastUpdatedAt = LastUpdatedAtExpr.GetGroupValue(clientEmbedResponseString);
using (var bootstrapClient = new HttpClient(handler))
{
bootstrapClient.DefaultRequestHeaders.Referrer = uri;
bootstrapClient.DefaultRequestHeaders.TryAddWithoutValidation("X-Tsi-Active-Tab",
options.WorksheetName);
var d = new Dictionary <string, string>();
var portSize = "{\"w\":{{pixelWidth}},\"h\":{{pixelHeight}}}";
portSize = portSize.Replace("{{pixelWidth}}", options.PixelWidth.ToString());
portSize = portSize.Replace("{{pixelHeight}}", options.PixelHeight.ToString());
d["worksheetPortSize"] = portSize;
d["dashboardPortSize"] = portSize;
d["clientDimension"] = portSize;
d["isBrowserRendering"] = "true";
d["browserRenderingThreshold"] = "100";
d["formatDataValueLocally"] = "false";
d["clientNum"] = "";
d["devicePixelRatio"] = "2";
d["clientRenderPixelLimit"] = "25000000";
d["sheet_id"] = options.WorksheetName;
d["showParams"] =
"{\"revertType\":null,\"refresh\":false,\"checkpoint\":false,\"sheetName\":\"\",\"unknownParams\":\"\",\"layoutId\":\"\"}";
d["stickySessionKey"] =
new StickySessionKey
{
lastUpdatedAt = lastUpdatedAt,
viewId = currentViewId,
workbookId = currentWorkbookId
}.ToJson();
d["filterTileSize"] = "200";
d["workbookLocale"] = "";
d["locale"] = "en_US";
d["language"] = "en";
d["verboseMode"] = "true";
d[":session_feature_flags"] = "{}";
d["keychain_version"] = "1";
var content = new FormUrlEncodedContent(d);
response = await bootstrapClient.PostAsync(new Uri($"{TableauSignInOptions.Url}/vizql/w/{options.WorkbookName}/v/{options.ViewName}/bootstrapSession/sessions/{sessionId}"), content);
Stuff.Noop(response);
using (var queuePdfClient = new HttpClient(handler))
{
queuePdfClient.DefaultRequestHeaders.Referrer = uri;
queuePdfClient.DefaultRequestHeaders.TryAddWithoutValidation("Origin",
uri.GetComponents(UriComponents.SchemeAndServer, UriFormat.SafeUnescaped));
queuePdfClient.DefaultRequestHeaders.Accept.Add(
System.Net.Http.Headers.MediaTypeWithQualityHeaderValue.Parse("text/javascript"));
queuePdfClient.DefaultRequestHeaders.TryAddWithoutValidation(
"X-Tsi-Supports-Accepted", "true");
queuePdfClient.DefaultRequestHeaders.TryAddWithoutValidation(
"X-Tsi-Active-Tab", options.WorksheetName);
queuePdfClient.DefaultRequestHeaders.TryAddWithoutValidation(
"X-Requested-With", "XMLHttpRequest");
var pdfFormData = new MultipartContent("form-data");
var pdfParams = @"{""currentSheet"":""{{worksheetName}}"",
""exportLayoutOptions"":{""pageSizeOption"":""letter"",""pageOrientationOption"":""printer"",""pageScaleMode"":""auto"",""pageScalePercent"":100,""pageFitHorizontal"":1,""pageFitVertical"":1,""imageHeight"":0,""imageWidth"":0},
""sheetOptions"":[{""sheet"":""{{worksheetName}}"",""isDashboard"":true,""isStory"":false,""namesOfSubsheets"":[],""isPublished"":true,""baseViewThumbLink"":""/thumb/views/{{workbookName}}/{{viewName}}"",""isSelected"":true,
""exportLayoutOptions"":{""pageSizeOption"":""letter"",""pageOrientationOption"":""printer"",""pageScaleMode"":""auto"",""pageScalePercent"":100,""pageFitHorizontal"":1,""pageFitVertical"":1,""imageHeight"":0,""imageWidth"":0}}
]}";
pdfParams = pdfParams.Replace(@"{{worksheetName}}", options.WorksheetName);
pdfParams = pdfParams.Replace(@"{{workbookName}}", options.WorkbookName);
pdfParams = pdfParams.Replace(@"{{viewName}}", options.ViewName);
AddStringContent(pdfFormData, "pdfExport", pdfParams);
response = await queuePdfClient.PostAsync(new Uri(
$"{TableauSignInOptions.Url}/vizql/w/{options.WorkbookName}/v/{options.ViewName}/sessions/{sessionId}/commands/tabsrv/pdf-export-server"), pdfFormData);
Stuff.Noop(response);
var responseString = await response.Content.ReadAsStringAsync();
var tempFileKey = PdfTempFileKeyExpr.GetGroupValue(responseString);
var downloadPdfOptions = new DownloadPdfOptions(options.WorkbookName, options.ViewName, sessionId, uri, tempFileKey, handler.CookieContainer.GetCookies(uri));
return(downloadPdfOptions);
}
}
}
}
return(null);
}
