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path: root/protocols/SkypeWeb/src/skype_files.cpp
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#include "stdafx.h"

////////////////////////////////////////////////////////////////////////////////////////
// File receiving

static void __cdecl DownloadCallack(size_t iProgress, void *pParam)
{
	auto *ofd = (OFDTHREAD *)pParam;

	DBVARIANT dbv = { DBVT_DWORD };
	dbv.dVal = unsigned(iProgress);
	db_event_setJson(ofd->hDbEvent, "ft", &dbv);
}

void CSkypeProto::ReceiveFileThread(void *param)
{
	auto *ofd = (OFDTHREAD *)param;

	DB::EventInfo dbei(ofd->hDbEvent);
	if (IsOnline() && dbei && !strcmp(dbei.szModule, m_szModuleName) && dbei.eventType == EVENTTYPE_FILE) {
		DB::FILE_BLOB blob(dbei);

		if (ofd->bCopy) {
			ofd->wszPath = Utf2T(blob.getUrl()).get();
			ofd->pCallback->Invoke(*ofd);
		}
		else {
			CMStringA szCookie, szUrl;
			szCookie.AppendFormat("skypetoken_asm=%s", m_szApiToken.get());

			auto &json = dbei.getJson();
			auto skft = json["skft"].as_string();
			{
				const char *preview;
				if (skft == "Picture.1")
					preview = "imgpsh_mobile_save_anim";
				else if (skft == "Video.1")
					preview = "video";
				else
					preview = "original";

				MHttpRequest nlhr(REQUEST_GET);
				nlhr.flags = NLHRF_HTTP11 | NLHRF_NOUSERAGENT;
				nlhr.m_szUrl = blob.getUrl();
				nlhr.m_szUrl.AppendFormat("/views/%s/status", preview);
				nlhr.AddHeader("Accept", "*/*");
				nlhr.AddHeader("Accept-Encoding", "gzip, deflate");
				nlhr.AddHeader("Cookie", szCookie);
				NLHR_PTR response(Netlib_HttpTransaction(m_hNetlibUser, &nlhr));
				if (response) {
					JsonReply reply(response);
					if (!reply.error()) {
						auto &root = reply.data();
						if (root["content_state"].as_string() == "ready")
							szUrl = root["view_location"].as_string().c_str();
					}
				}
			}

			if (!szUrl.IsEmpty()) {
				MHttpRequest nlhr(REQUEST_GET);
				nlhr.flags = NLHRF_HTTP11 | NLHRF_NOUSERAGENT;
				nlhr.m_szUrl = blob.getUrl();
				if (skft == "Picture.1")
					nlhr.m_szUrl += "/views/imgpsh_fullsize_anim";
				else if (skft == "Video.1")
					nlhr.m_szUrl += "/views/video";
				else
					nlhr.m_szUrl += "/views/original";

				nlhr.AddHeader("Accept", "*/*");
				nlhr.AddHeader("Accept-Encoding", "gzip, deflate");
				nlhr.AddHeader("Cookie", szCookie);

				NLHR_PTR reply(Netlib_DownloadFile(m_hNetlibUser, &nlhr, ofd->wszPath, DownloadCallack, ofd));
				if (reply && reply->resultCode == 200) {
					struct _stat st;
					_wstat(ofd->wszPath, &st);

					DBVARIANT dbv = { DBVT_DWORD };
					dbv.dVal = st.st_size;
					db_event_setJson(ofd->hDbEvent, "ft", &dbv);

					ofd->Finish();
				}
			}
		}
	}

	delete ofd;
}

INT_PTR CSkypeProto::SvcOfflineFile(WPARAM param, LPARAM)
{
	ForkThread(&CSkypeProto::ReceiveFileThread, (void *)param);
	return 0;
}

////////////////////////////////////////////////////////////////////////////////////////
// File sending

#define FILETRANSFER_FAILED(fup) { ProtoBroadcastAck(fup->hContact, ACKTYPE_FILE, ACKRESULT_FAILED, (HANDLE)fup); delete fup; fup = nullptr;} 

HANDLE CSkypeProto::SendFile(MCONTACT hContact, const wchar_t *szDescription, wchar_t **ppszFiles)
{
	if (IsOnline()) {
		CFileUploadParam *fup = new CFileUploadParam(hContact, szDescription, ppszFiles);
		ForkThread(&CSkypeProto::SendFileThread, (void*)fup);
		return (HANDLE)fup;
	}
	return INVALID_HANDLE_VALUE;
}

void CSkypeProto::SendFileThread(void *p)
{
	CFileUploadParam *fup = (CFileUploadParam *)p;
	if (!IsOnline()) {
		FILETRANSFER_FAILED(fup);
		return;
	}
	if (!fup->IsAccess()) {
		FILETRANSFER_FAILED(fup);
		return;
	}

	if (auto *pBitmap = FreeImage_LoadU(FreeImage_GetFIFFromFilenameU(fup->tszFileName), fup->tszFileName)) {
		fup->isPicture = true;
		fup->width = FreeImage_GetWidth(pBitmap);
		fup->height = FreeImage_GetHeight(pBitmap);
		FreeImage_Unload(pBitmap);
	}

	ProtoBroadcastAck(fup->hContact, ACKTYPE_FILE, ACKRESULT_CONNECTING, (HANDLE)fup);
	PushRequest(new ASMObjectCreateRequest(this, fup));
}

void CSkypeProto::OnASMObjectCreated(MHttpResponse *response, AsyncHttpRequest *pRequest)
{
	auto *fup = (CFileUploadParam*)pRequest->pUserInfo;
	if (response == nullptr || response->body.IsEmpty()) {
LBL_Error:
		FILETRANSFER_FAILED(fup);
		return;
	}

	if (response->resultCode != 200 && response->resultCode != 201) {
		debugLogA("Object creation failed with error code %d", response->resultCode);
		goto LBL_Error;
	}

	JSONNode node = JSONNode::parse(response->body);
	std::string strObjectId = node["id"].as_string();
	if (strObjectId.empty()) {
		debugLogA("Invalid server response (empty object id)");
		goto LBL_Error;
	}
	
	fup->uid = mir_strdup(strObjectId.c_str());
	FILE *pFile = _wfopen(fup->tszFileName, L"rb");
	if (pFile == nullptr) return;

	fseek(pFile, 0, SEEK_END);
	long lFileLen = ftell(pFile);
	if (lFileLen < 1) {
		fclose(pFile);
		goto LBL_Error;
	}

	fseek(pFile, 0, SEEK_SET);

	mir_ptr<uint8_t> pData((uint8_t*)mir_alloc(lFileLen));
	long lBytes = (long)fread(pData, sizeof(uint8_t), lFileLen, pFile);
	if (lBytes != lFileLen) {
		fclose(pFile);
		goto LBL_Error;
	}
	fup->size = lBytes;
	ProtoBroadcastAck(fup->hContact, ACKTYPE_FILE, ACKRESULT_INITIALISING, (HANDLE)fup);
	PushRequest(new ASMObjectUploadRequest(this, strObjectId.c_str(), pData, lBytes, fup));
	fclose(pFile);
}

void CSkypeProto::OnASMObjectUploaded(MHttpResponse *response, AsyncHttpRequest *pRequest)
{
	auto *fup = (CFileUploadParam*)pRequest->pUserInfo;
	if (response == nullptr) {
		FILETRANSFER_FAILED(fup);
		return;
	}

	wchar_t *tszFile = wcsrchr(fup->tszFileName, L'\\') + 1;

	TiXmlDocument doc;
	auto *pRoot = doc.NewElement("URIObject");
	doc.InsertEndChild(pRoot);

	pRoot->SetAttribute("doc_id", fup->uid.get());
	pRoot->SetAttribute("uri", CMStringA(FORMAT, "https://api.asm.skype.com/v1/objects/%s", fup->uid.get()));

	// is that a picture?
	CMStringA href;
	if (fup->isPicture) {
		pRoot->SetAttribute("type", "Picture.1");
		pRoot->SetAttribute("url_thumbnail", CMStringA(FORMAT, "https://api.asm.skype.com/v1/objects/%s/views/imgt1_anim", fup->uid.get()));
		pRoot->SetAttribute("width", fup->width);
		pRoot->SetAttribute("height", fup->height);
		pRoot->SetText("To view this shared photo, go to:");

		href.Format("https://login.skype.com/login/sso?go=xmmfallback?pic=%s", fup->uid.get());
	}
	else {
		pRoot->SetAttribute("type", "File.1");
		pRoot->SetAttribute("url_thumbnail", CMStringA(FORMAT, "https://api.asm.skype.com/v1/objects/%s/views/original", fup->uid.get()));
		pRoot->SetText("To view this file, go to:");

		href.Format("https://login.skype.com/login/sso?go=webclient.xmm&docid=%s", fup->uid.get());
	}

	auto *xmlA = doc.NewElement("a"); xmlA->SetText(href);
	xmlA->SetAttribute("href", href);
	pRoot->InsertEndChild(xmlA);

	auto *xmlOrigName = doc.NewElement("OriginalName"); xmlOrigName->SetAttribute("v", tszFile); pRoot->InsertEndChild(xmlOrigName);
	auto *xmlSize = doc.NewElement("FileSize"); xmlSize->SetAttribute("v", (int)fup->size); pRoot->InsertEndChild(xmlSize);

	if (fup->isPicture) {
		auto xmlMeta = doc.NewElement("meta"); 
		xmlMeta->SetAttribute("type", "photo"); xmlMeta->SetAttribute("originalName", tszFile);
		pRoot->InsertEndChild(xmlMeta);
	}

	tinyxml2::XMLPrinter printer(0, true);
	doc.Print(&printer);

	uint32_t hMessage;
	Utils_GetRandom(&hMessage, sizeof(hMessage));
	hMessage &= ~0x80000000;

	auto *pReq = new SendFileRequest(fup, getId(fup->hContact), printer.CStr());
	pReq->hContact = fup->hContact;
	pReq->pUserInfo = (HANDLE)hMessage;
	PushRequest(pReq);

	ProtoBroadcastAck(fup->hContact, ACKTYPE_FILE, ACKRESULT_SUCCESS, (HANDLE)fup);
	delete fup;
}