/*
Plugin of Miranda IM for communicating with users of the MSN Messenger protocol.

Copyright (c) 2012-2018 Miranda NG team
Copyright (c) 2007-2012 Boris Krasnovskiy.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "stdafx.h"
#include "msn_proto.h"

static const char oimRecvUrl[] = "https://rsi.hotmail.com/rsi/rsi.asmx";
static const char mailReqHdr[] =
	"SOAPAction: \"http://www.hotmail.msn.com/ws/2004/09/oim/rsi/%s\"\r\n";

ezxml_t CMsnProto::oimRecvHdr(const char* service, ezxml_t& tbdy, char*& httphdr)
{
	ezxml_t xmlp = ezxml_new("soap:Envelope");
	ezxml_set_attr(xmlp, "xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");
	ezxml_set_attr(xmlp, "xmlns:xsd", "http://www.w3.org/2001/XMLSchema");
	ezxml_set_attr(xmlp, "xmlns:soap", "http://schemas.xmlsoap.org/soap/envelope/");

	ezxml_t hdr = ezxml_add_child(xmlp, "soap:Header", 0);
	ezxml_t cook = ezxml_add_child(hdr, "PassportCookie", 0);
	ezxml_set_attr(cook, "xmlns", "http://www.hotmail.msn.com/ws/2004/09/oim/rsi");
	ezxml_t tcook = ezxml_add_child(cook, "t", 0);
	ezxml_set_txt(tcook, tAuthToken ? tAuthToken : "");
	ezxml_t pcook = ezxml_add_child(cook, "p", 0);
	ezxml_set_txt(pcook, pAuthToken ? pAuthToken : "");

	ezxml_t bdy = ezxml_add_child(xmlp, "soap:Body", 0);

	tbdy = ezxml_add_child(bdy, service, 0);
	ezxml_set_attr(tbdy, "xmlns", "http://www.hotmail.msn.com/ws/2004/09/oim/rsi");

	size_t hdrsz = mir_strlen(service) + sizeof(mailReqHdr) + 20;
	httphdr = (char*)mir_alloc(hdrsz);

	mir_snprintf(httphdr, hdrsz, mailReqHdr, service);

	return xmlp;
}


void CMsnProto::getOIMs(ezxml_t xmli)
{
	ezxml_t toki = ezxml_child(xmli, "M");
	if (toki == nullptr) return;

	char* getReqHdr;
	ezxml_t reqmsg;
	ezxml_t xmlreq = oimRecvHdr("GetMessage", reqmsg, getReqHdr);

	ezxml_t reqmid = ezxml_add_child(reqmsg, "messageId", 0);
	ezxml_t reqmrk = ezxml_add_child(reqmsg, "alsoMarkAsRead", 0);
	ezxml_set_txt(reqmrk, "false");

	char* delReqHdr;
	ezxml_t delmsg;
	ezxml_t xmldel = oimRecvHdr("DeleteMessages", delmsg, delReqHdr);
	ezxml_t delmids = ezxml_add_child(delmsg, "messageIds", 0);

	while (toki != nullptr) {
		const char* szId = ezxml_txt(ezxml_child(toki, "I"));
		const char* szEmail = ezxml_txt(ezxml_child(toki, "E"));

		ezxml_set_txt(reqmid, szId);
		char* szData = ezxml_toxml(xmlreq, true);

		unsigned status;
		char* url = (char*)mir_strdup(oimRecvUrl);

		char* tResult = getSslResult(&url, szData, getReqHdr, status);

		free(szData);
		mir_free(url);

		if (tResult != nullptr && status == 200) {
			ezxml_t xmlm = ezxml_parse_str(tResult, mir_strlen(tResult));
			ezxml_t body = getSoapResponse(xmlm, "GetMessage");

			MimeHeaders mailInfo;
			const char* mailbody = mailInfo.readFromBuffer((char*)ezxml_txt(body));

			time_t evtm = time(0);
			const char* arrTime = mailInfo["X-OriginalArrivalTime"];
			if (arrTime != nullptr) {
				char szTime[32], *p;
				txtParseParam(arrTime, "FILETIME", "[", "]", szTime, sizeof(szTime));

				unsigned filetimeLo = strtoul(szTime, &p, 16);
				if (*p == ':') {
					unsigned __int64 filetime = strtoul(p + 1, &p, 16);
					filetime <<= 32;
					filetime |= filetimeLo;
					filetime /= 10000000;
#ifndef __GNUC__
					filetime -= 11644473600ui64;
#else
					filetime -= 11644473600ull;
#endif
					evtm = (time_t)filetime;
				}
			}

			PROTORECVEVENT pre = { 0 };
			pre.szMessage = mailInfo.decodeMailBody((char*)mailbody);
			pre.timestamp = evtm;
			ProtoChainRecvMsg(MSN_HContactFromEmail(szEmail), &pre);
			mir_free(pre.szMessage);

			ezxml_t delmid = ezxml_add_child(delmids, "messageId", 0);
			ezxml_set_txt(delmid, szId);

			ezxml_free(xmlm);
		}
		mir_free(tResult);
		toki = ezxml_next(toki);
	}
	ezxml_free(xmlreq);
	mir_free(getReqHdr);

	if (ezxml_child(delmids, "messageId") != nullptr) {
		char* szData = ezxml_toxml(xmldel, true);

		unsigned status;
		char* url = (char*)mir_strdup(oimRecvUrl);

		char* tResult = getSslResult(&url, szData, delReqHdr, status);

		mir_free(url);
		mir_free(tResult);
		free(szData);
	}
	ezxml_free(xmldel);
	mir_free(delReqHdr);
}


void CMsnProto::getMetaData(void)
{
	char* getReqHdr;
	ezxml_t reqbdy;
	ezxml_t xmlreq = oimRecvHdr("GetMetadata", reqbdy, getReqHdr);

	char* szData = ezxml_toxml(xmlreq, true);
	ezxml_free(xmlreq);

	unsigned status;
	char* url = (char*)mir_strdup(oimRecvUrl);

	char* tResult = getSslResult(&url, szData, getReqHdr, status);

	mir_free(url);
	free(szData);
	mir_free(getReqHdr);

	if (tResult != nullptr && status == 200) {
		ezxml_t xmlm = ezxml_parse_str(tResult, mir_strlen(tResult));
		ezxml_t xmli = ezxml_get(xmlm, "s:Body", 0, "GetMetadataResponse", 0, "MD", -1);
		if (!xmli)
			xmli = ezxml_get(xmlm, "soap:Body", 0, "GetMetadataResponse", 0, "MD", -1);

		getOIMs(xmli);
		ezxml_free(xmlm);
	}
	mir_free(tResult);
}


void CMsnProto::processMailData(char* mailData)
{
	if (mir_strcmp(mailData, "too-large") == 0) {
		getMetaData();
	}
	else {
		ezxml_t xmli = ezxml_parse_str(mailData, mir_strlen(mailData));

		ezxml_t toke = ezxml_child(xmli, "E");

		const char* szIU = ezxml_txt(ezxml_child(toke, "IU"));
		if (*szIU) mUnreadMessages = atol(szIU);

		const char* szOU = ezxml_txt(ezxml_child(toke, "OU"));
		if (*szOU) mUnreadJunkEmails = atol(szOU);

		getOIMs(xmli);

		ezxml_free(xmli);
	}
}

/////////////////////////////////////////////////////////////////////////////////////////
// Processes e-mail notification

void CMsnProto::sttNotificationMessage(char* msgBody, bool isInitial)
{
	wchar_t tBuffer[512];
	wchar_t tBuffer2[512];
	int  UnreadMessages = mUnreadMessages;
	int  UnreadJunkEmails = mUnreadJunkEmails;
	bool ShowPopup = isInitial;

	MimeHeaders tFileInfo;
	tFileInfo.readFromBuffer(msgBody);

	const char* From = tFileInfo["From"];
	const char* Subject = tFileInfo["Subject"];
	const char* Fromaddr = tFileInfo["From-Addr"];
	const char* MsgDelta = tFileInfo["Message-Delta"];
	const char* SrcFolder = tFileInfo["Src-Folder"];
	const char* DestFolder = tFileInfo["Dest-Folder"];
	const char* InboxUnread = tFileInfo["Inbox-Unread"];
	const char* FoldersUnread = tFileInfo["Folders-Unread"];

	if (InboxUnread != nullptr)
		mUnreadMessages = atol(InboxUnread);
	if (FoldersUnread != nullptr)
		mUnreadJunkEmails = atol(FoldersUnread);

	if (MsgDelta != nullptr) {
		int iDelta = atol(MsgDelta);
		if (SrcFolder && mir_strcmp(SrcFolder, "ACTIVE") == 0)
			mUnreadMessages -= iDelta;
		else if (DestFolder && mir_strcmp(DestFolder, "ACTIVE") == 0)
			mUnreadMessages += iDelta;
		if (SrcFolder && mir_strcmp(SrcFolder, "HM_BuLkMail_") == 0)
			mUnreadJunkEmails -= iDelta;
		else if (DestFolder && mir_strcmp(DestFolder, "HM_BuLkMail_") == 0)
			mUnreadJunkEmails += iDelta;

		if (mUnreadJunkEmails < 0) mUnreadJunkEmails = 0;
		if (mUnreadMessages < 0) mUnreadMessages = 0;
	}

	if (From != nullptr && Subject != nullptr && Fromaddr != nullptr) {
		if (DestFolder != nullptr && SrcFolder == nullptr) {
			mUnreadMessages += mir_strcmp(DestFolder, "ACTIVE") == 0;
			mUnreadJunkEmails += mir_strcmp(DestFolder, "HM_BuLkMail_") == 0;
		}

		wchar_t* mimeFromW = tFileInfo.decode(From);
		wchar_t* mimeSubjectW = tFileInfo.decode(Subject);


		mir_snwprintf(tBuffer2, TranslateT("Subject: %s"), mimeSubjectW);



		wchar_t* msgtxt = _stricmp(From, Fromaddr) ?
			TranslateT("Hotmail from %s (%S)") : TranslateT("Hotmail from %s");

		mir_snwprintf(tBuffer, msgtxt, mimeFromW, Fromaddr);
		mir_free(mimeFromW);
		mir_free(mimeSubjectW);
		ShowPopup = true;
	}
	else {
		const char* MailData = tFileInfo["Mail-Data"];
		if (MailData != nullptr) processMailData((char*)MailData);

		mir_snwprintf(tBuffer, m_tszUserName);
		mir_snwprintf(tBuffer2, TranslateT("Unread mail is available: %d in Inbox and %d in other folders."), mUnreadMessages, mUnreadJunkEmails);
	}

	if (UnreadMessages == mUnreadMessages && UnreadJunkEmails == mUnreadJunkEmails  && !isInitial)
		return;

	ShowPopup &= mUnreadMessages != 0 || (mUnreadJunkEmails != 0 && !getByte("DisableHotmailJunk", 0));

	MCONTACT hContact = MSN_HContactFromEmail(MyOptions.szEmail);
	if (hContact) {
		pcli->pfnRemoveEvent(hContact, 1);
		displayEmailCount(hContact);

		if (ShowPopup && !getByte("DisableHotmailTray", 1)) {
			char buf[64];
			mir_snprintf(buf, "%s%s", m_szModuleName, MS_GOTO_INBOX);

			CLISTEVENT cle = {};
			cle.hContact = hContact;
			cle.hDbEvent = 1;
			cle.flags = CLEF_URGENT | CLEF_UNICODE;
			cle.hIcon = Skin_LoadIcon(SKINICON_OTHER_SENDEMAIL);
			cle.szTooltip.w = tBuffer2;
			cle.pszService = buf;
			pcli->pfnAddEvent(&cle);
		}
	}

	ProtoBroadcastAck(NULL, ACKTYPE_EMAIL, ACKRESULT_STATUS, nullptr, 0);

	// Disable to notify receiving hotmail
	if (ShowPopup && !getByte("DisableHotmail", 0)) {
		Skin_PlaySound(mailsoundname);

		const char *msgurl = tFileInfo["Message-URL"];
		if (msgurl) {
			const char *p = strchr(msgurl, '&'); if (p) *(char*)p = 0;
			p = strstr(msgurl, "getmsg"); if (p) msgurl = p;
		}
		else
			msgurl = "inbox";

		char szUrl[256];
		mir_snprintf(szUrl, "http://mail.live.com?rru=%s", msgurl);

		MSN_ShowPopup(tBuffer, tBuffer2,
			MSN_ALLOW_ENTER | MSN_ALLOW_MSGBOX | MSN_HOTMAIL_POPUP,
			szUrl);
	}

	if (!getByte("RunMailerOnHotmail", 0) || !ShowPopup || isInitial)
		return;

	char mailerpath[MAX_PATH];
	if (!db_get_static(NULL, m_szModuleName, "MailerPath", mailerpath, sizeof(mailerpath))) {
		if (mailerpath[0]) {
			char* tParams = nullptr;
			char* tCmd = mailerpath;

			if (*tCmd == '\"') {
				++tCmd;
				char* tEndPtr = strchr(tCmd, '\"');
				if (tEndPtr != nullptr) {
					*tEndPtr = 0;
					tParams = tEndPtr + 1;
				}
			}

			if (tParams == nullptr) {
				tParams = strchr(tCmd, ' ');
				tParams = tParams ? tParams + 1 : strchr(tCmd, '\0');
			}

			while (*tParams == ' ') ++tParams;

			debugLogA("Running mailer \"%s\" with params \"%s\"", tCmd, tParams);
			ShellExecuteA(nullptr, "open", tCmd, tParams, nullptr, TRUE);
		}
	}
}

static void TruncUtf8(char *str, size_t sz)
{
	size_t len = mir_strlen(str);
	if (sz > len) sz = len;

	size_t cntl = 0, cnt = 0;
	for (;;) {
		unsigned char p = (unsigned char)str[cnt];

		if (p >= 0xE0) cnt += 3;
		else if (p >= 0xC0) cnt += 2;
		else if (p != 0) ++cnt;
		else break;

		if (cnt <= sz) cntl = cnt;
		else break;
	}
	str[cntl] = 0;
}

void CMsnProto::displayEmailCount(MCONTACT hContact)
{
	if (!emailEnabled || getByte("DisableHotmailCL", 0)) return;

	wchar_t* name = GetContactNameT(hContact);
	if (name == nullptr) return;

	wchar_t* ch = name - 1;
	do {
		ch = wcschr(ch + 1, '[');
	} while (ch && !iswdigit(ch[1]));
	if (ch) *ch = 0;
	rtrimw(name);

	wchar_t szNick[128];
	mir_snwprintf(szNick, getByte("DisableHotmailJunk", 0) ? L"%s [%d]" : L"%s [%d][%d]", name, mUnreadMessages, mUnreadJunkEmails);

	nickChg = true;
	setWString(hContact, "Nick", szNick);
	nickChg = false;
}