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|
// ---------------------------------------------------------------------------80
// ICQ plugin for Miranda Instant Messenger
// ________________________________________
//
// Copyright © 2000-2001 Richard Hughes, Roland Rabien, Tristan Van de Vreede
// Copyright © 2001-2002 Jon Keating, Richard Hughes
// Copyright © 2002-2004 Martin Öberg, Sam Kothari, Robert Rainwater
// Copyright © 2004-2010 Joe Kucera
// Copyright © 2012-2018 Miranda NG team
//
// 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, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
// -----------------------------------------------------------------------------
// DESCRIPTION:
//
// Manages Avatar connection, provides internal service for handling avatars
// -----------------------------------------------------------------------------
#include "stdafx.h"
#include "m_folders.h"
BYTE hashEmptyAvatar[9] = {0x00, 0x01, 0x00, 0x05, 0x02, 0x01, 0xD2, 0x04, 0x72};
avatars_request::avatars_request(int type)
{
this->type = type;
}
avatars_request::~avatars_request()
{
if (this) {
switch (type) {
case ART_UPLOAD:
SAFE_FREE((void**)&pData);
break;
case ART_GET:
SAFE_FREE((void**)&hash);
SAFE_FREE(&szFile);
break;
case ART_BLOCK:
break;
}
}
}
wchar_t* CIcqProto::GetOwnAvatarFileName()
{
DBVARIANT dbvFile = {DBVT_DELETED};
if (getWString(NULL, "AvatarFile", &dbvFile))
return nullptr;
wchar_t tmp[MAX_PATH * 2];
PathToAbsoluteW(dbvFile.ptszVal, tmp);
db_free(&dbvFile);
return null_strdup(tmp);
}
void CIcqProto::GetFullAvatarFileName(int dwUin, const char *szUid, int dwFormat, wchar_t *pszDest, size_t cbLen)
{
GetAvatarFileName(dwUin, szUid, pszDest, cbLen);
AddAvatarExt(dwFormat, pszDest);
}
void CIcqProto::GetAvatarFileName(int dwUin, const char *szUid, wchar_t *pszDest, size_t cbLen)
{
wchar_t szPath[MAX_PATH * 2];
mir_snwprintf(szPath, L"%s\\%S\\", VARSW(L"%miranda_avatarcache%"), m_szModuleName);
FOLDERSGETDATA fgd = { sizeof(fgd) };
fgd.nMaxPathSize = _countof(szPath);
fgd.szPathT = szPath;
fgd.flags = FF_TCHAR;
// fill the destination
mir_wstrncpy(pszDest, szPath, cbLen - 1);
size_t tPathLen = mir_wstrlen(pszDest);
// make sure the avatar cache directory exists
CreateDirectoryTreeW(szPath);
if (dwUin != 0)
_ltow(dwUin, pszDest + tPathLen, 10);
else if (szUid) {
wchar_t* p = mir_a2u(szUid);
mir_wstrcpy(pszDest + tPathLen, p);
mir_free(p);
}
else {
wchar_t szBuf[MAX_PATH];
if (Profile_GetNameW(MAX_PATH, szBuf))
mir_wstrcpy(pszDest + tPathLen, L"avatar");
else {
wchar_t *szLastDot = wcsrchr(szBuf, '.');
if (szLastDot)
szLastDot[0] = '\0';
mir_wstrcpy(pszDest + tPathLen, szBuf);
mir_wstrcat(pszDest + tPathLen, L"_avt");
}
}
}
void AddAvatarExt(int dwFormat, wchar_t *pszDest)
{
const wchar_t *ext = ProtoGetAvatarExtension(dwFormat);
mir_wstrcat(pszDest, (*ext == 0) ? L".dat" : ext);
}
#define MD5_BLOCK_SIZE 1024*1024 /* use 1MB blocks */
BYTE* calcMD5HashOfFile(const wchar_t *tszFile)
{
BYTE *res = nullptr;
HANDLE hFile = nullptr, hMap = nullptr;
if ((hFile = CreateFile(tszFile, GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING, 0, nullptr)) != INVALID_HANDLE_VALUE) {
if ((hMap = CreateFileMapping(hFile, nullptr, PAGE_READONLY, 0, 0, nullptr)) != nullptr) {
long cbFileSize = GetFileSize(hFile, nullptr);
res = (BYTE*)SAFE_MALLOC(16 * sizeof(BYTE));
if (cbFileSize != 0 && res) {
mir_md5_state_t state;
BYTE digest[16];
int dwOffset = 0;
mir_md5_init(&state);
while (dwOffset < cbFileSize) {
BYTE *ppMap = nullptr;
int dwBlockSize = min(MD5_BLOCK_SIZE, cbFileSize - dwOffset);
if (!(ppMap = (BYTE*)MapViewOfFile(hMap, FILE_MAP_READ, 0, dwOffset, dwBlockSize)))
break;
mir_md5_append(&state, (const BYTE *)ppMap, dwBlockSize);
UnmapViewOfFile(ppMap);
dwOffset += dwBlockSize;
}
mir_md5_finish(&state, digest);
memcpy(res, digest, 16 * sizeof(BYTE));
}
}
if (hMap != nullptr) CloseHandle(hMap);
if (hFile != nullptr) CloseHandle(hFile);
}
return res;
}
int CIcqProto::IsAvatarChanged(MCONTACT hContact, const BYTE *pHash, size_t nHashLen)
{
DBVARIANT dbvSaved = { 0 };
if (getSetting(hContact, "AvatarSaved", &dbvSaved))
return 1; // saved Avatar hash is missing
// are the hashes different?
int ret = (dbvSaved.cpbVal != nHashLen || memcmp(dbvSaved.pbVal, pHash, nHashLen)) ? 2 : 0;
db_free(&dbvSaved);
return ret;
}
void CIcqProto::StartAvatarThread(HNETLIBCONN hConn, char *cookie, size_t cookieLen) // called from event
{
if (!hConn) {
mir_cslock l(m_avatarsMutex); // place avatars lock
if (m_avatarsConnection && m_avatarsConnection->isPending()) {
debugLogA("Avatar, Multiple start thread attempt, ignored.");
SAFE_FREE((void**)&cookie);
return;
}
debugLogA("Avatars: Connection failed");
m_avatarsConnectionPending = FALSE;
// check if any upload request are waiting in the queue
int bYet = 0;
auto T = m_arAvatars.rev_iter();
for (auto &it : T) {
if (it->type == ART_UPLOAD) { // we found it, return error
if (!bYet) {
icq_LogMessage(LOG_WARNING, LPGEN("Error uploading avatar to server, server temporarily unavailable."));
bYet = 1;
}
// remove upload request from queue
delete it;
m_arAvatars.remove(T.indexOf(&it));
}
}
SAFE_FREE((void**)&cookie);
return;
}
mir_cslock l(m_avatarsMutex);
if (m_avatarsConnection && m_avatarsConnection->isPending()) {
debugLogA("Avatar, Multiple start thread attempt, ignored.");
NetLib_CloseConnection(&hConn, false);
SAFE_FREE((void**)&cookie);
return;
}
if (m_avatarsConnection)
m_avatarsConnection->closeConnection();
m_avatarsConnection = new avatars_server_connection(this, hConn, cookie, cookieLen); // the old connection should not be used anymore
// connection object created, remove the connection request pending flag
m_avatarsConnectionPending = false;
}
void CIcqProto::StopAvatarThread()
{
mir_cslock l(m_avatarsMutex); // the connection is about to close
if (m_avatarsConnection)
m_avatarsConnection->shutdownConnection(); // make the thread stop
}
// handle Owner's avatar hash changes
void CIcqProto::handleAvatarOwnerHash(BYTE bFlags, BYTE *pData, size_t nDataLen)
{
if (nDataLen < 0x14 || !m_bAvatarsEnabled)
return;
switch (bFlags) {
case 1: // our avatar is on the server
setSettingBlob(NULL, "AvatarHash", pData, 0x14); /// TODO: properly handle multiple avatar items (more formats)
setUserInfo();
{
// here we need to find a file, check its hash, if invalid get avatar from server
wchar_t *file = GetOwnAvatarFileName();
if (!file) { // we have no avatar file, download from server
debugLogA("We have no avatar, requesting from server.");
wchar_t szFile[MAX_PATH * 2 + 4];
GetAvatarFileName(0, nullptr, szFile, MAX_PATH * 2);
GetAvatarData(NULL, m_dwLocalUIN, nullptr, pData, 0x14, szFile);
}
else { // we know avatar filename
BYTE *hash = calcMD5HashOfFile(file);
if (!hash) { // hash could not be calculated - probably missing file, get avatar from server
debugLogA("We have no avatar, requesting from server.");
wchar_t szFile[MAX_PATH * 2 + 4];
GetAvatarFileName(0, nullptr, szFile, MAX_PATH * 2);
GetAvatarData(NULL, m_dwLocalUIN, nullptr, pData, 0x14, szFile);
}
// check if we had set any avatar if yes set our, if not download from server
else if (memcmp(hash, pData + 4, 0x10)) { // we have different avatar, sync that
if (m_bSsiEnabled && getByte("ForceOurAvatar", 1)) { // we want our avatar, update hash
DWORD dwPaFormat = ::ProtoGetAvatarFileFormat(file);
BYTE pHash[0x14];
debugLogA("Our avatar is different, setting our new hash.");
pHash[0] = 0;
pHash[1] = dwPaFormat == PA_FORMAT_XML ? AVATAR_HASH_FLASH : AVATAR_HASH_STATIC;
pHash[2] = 1; // state of the hash
pHash[3] = 0x10; // len of the hash
memcpy((pHash + 4), hash, 0x10);
updateServAvatarHash(pHash, 0x14);
}
else { // get avatar from server
debugLogA("We have different avatar, requesting new from server.");
wchar_t tszFile[MAX_PATH * 2 + 4];
GetAvatarFileName(0, nullptr, tszFile, MAX_PATH * 2);
GetAvatarData(NULL, m_dwLocalUIN, nullptr, pData, 0x14, tszFile);
}
}
SAFE_FREE((void**)&hash);
SAFE_FREE(&file);
}
}
break;
case 0x41: // request to upload avatar data
case 0x81:
// request to re-upload avatar data
if (m_bSsiEnabled) { // we could not change serv-list if it is disabled...
wchar_t *file = GetOwnAvatarFileName();
if (!file) { // we have no file to upload, remove hash from server
debugLogA("We do not have avatar, removing hash.");
SetMyAvatar(0, 0);
break;
}
DWORD dwPaFormat = ::ProtoGetAvatarFileFormat(file);
BYTE *hash = calcMD5HashOfFile(file);
if (!hash) { // the hash could not be calculated, remove from server
debugLogA("We could not obtain hash, removing hash.");
SetMyAvatar(0, 0);
}
else if (!memcmp(hash, pData + 4, 0x10)) { // we have the right file
HANDLE hFile = nullptr, hMap = nullptr;
BYTE *ppMap = nullptr;
long cbFileSize = 0;
debugLogA("Uploading our avatar data.");
if ((hFile = CreateFile(file, GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING, 0, nullptr)) != INVALID_HANDLE_VALUE)
if ((hMap = CreateFileMapping(hFile, nullptr, PAGE_READONLY, 0, 0, nullptr)) != nullptr)
if ((ppMap = (BYTE*)MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != nullptr)
cbFileSize = GetFileSize(hFile, nullptr);
if (cbFileSize != 0)
SetAvatarData(NULL, (WORD)(dwPaFormat == PA_FORMAT_XML ? AVATAR_HASH_FLASH : AVATAR_HASH_STATIC), ppMap, cbFileSize);
if (ppMap != nullptr) UnmapViewOfFile(ppMap);
if (hMap != nullptr) CloseHandle(hMap);
if (hFile != nullptr) CloseHandle(hFile);
SAFE_FREE((void**)&hash);
}
else {
BYTE pHash[0x14];
debugLogA("Our file is different, set our new hash.");
pHash[0] = 0;
pHash[1] = dwPaFormat == PA_FORMAT_XML ? AVATAR_HASH_FLASH : AVATAR_HASH_STATIC;
pHash[2] = 1; // state of the hash
pHash[3] = 0x10; // len of the hash
memcpy((pHash + 4), hash, 0x10);
updateServAvatarHash(pHash, 0x14);
SAFE_FREE((void**)&hash);
}
SAFE_FREE(&file);
}
break;
default:
debugLogA("Received UNKNOWN Avatar Status.");
}
}
// handle Contact's avatar hash
void CIcqProto::handleAvatarContactHash(DWORD dwUIN, char *szUID, MCONTACT hContact, BYTE *pHash, size_t nHashLen)
{
int bJob = FALSE;
BOOL avatarInfoPresent = FALSE;
int avatarType = -1;
BYTE *pAvatarHash = nullptr;
size_t cbAvatarHash = 0;
BYTE emptyItem[0x10] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
if (!m_bAvatarsEnabled || nHashLen < 4)
return; // only if enabled
while (nHashLen >= 4) { // parse online message items one by one
WORD itemType = pHash[0] << 8 | pHash[1];
size_t itemLen = pHash[3];
// just some validity check
if (itemLen + 4 > nHashLen)
itemLen = nHashLen - 4;
if (itemLen && memcmp(pHash + 4, emptyItem, itemLen > 0x10 ? 0x10 : itemLen)) {
// Item types
// 0000: AIM mini avatar
// 0001: AIM/ICQ avatar ID/hash (len 5 or 16 bytes)
// 0002: iChat online message
// 0008: ICQ Flash avatar hash (16 bytes)
// 0009: iTunes music store link
// 000C: ICQ contact photo (16 bytes)
// 000D: Last update time of online message
// 000E: Status mood
if (itemType == AVATAR_HASH_MINI && itemLen == 0x05 && avatarType == -1) { // mini avatar
pAvatarHash = pHash;
cbAvatarHash = itemLen + 4;
avatarType = itemType;
}
else if (itemType == AVATAR_HASH_STATIC && (itemLen == 0x05 || itemLen == 0x10) && (avatarType == -1 || avatarType == AVATAR_HASH_MINI)) { // normal avatar
pAvatarHash = pHash;
cbAvatarHash = itemLen + 4;
avatarType = itemType;
}
else if (itemType == AVATAR_HASH_FLASH && itemLen == 0x10 && (avatarType == -1 || avatarType == AVATAR_HASH_MINI || avatarType == AVATAR_HASH_STATIC)) { // flash avatar
pAvatarHash = pHash;
cbAvatarHash = itemLen + 4;
avatarType = itemType;
}
else if (itemType == AVATAR_HASH_PHOTO && itemLen == 0x10) { // big avatar (ICQ 6+)
pAvatarHash = pHash;
cbAvatarHash = itemLen + 4;
avatarType = itemType;
}
}
else if ((itemLen == 0) && (itemType == AVATAR_HASH_MINI || itemType == AVATAR_HASH_STATIC || itemType == AVATAR_HASH_FLASH || itemType == AVATAR_HASH_PHOTO))
// empty item - indicating that avatar of that type was removed
avatarInfoPresent = TRUE;
pHash += itemLen + 4;
nHashLen -= itemLen + 4;
}
if (avatarType != -1) { // check settings, should we request avatar immediatelly?
DBVARIANT dbv = { DBVT_DELETED };
wchar_t tszAvatar[MAX_PATH * 2 + 4];
BYTE bAutoLoad = getByte("AvatarsAutoLoad", DEFAULT_LOAD_AVATARS);
if ((avatarType == AVATAR_HASH_STATIC || avatarType == AVATAR_HASH_MINI) && cbAvatarHash == 0x09 && !memcmp(pAvatarHash + 4, hashEmptyAvatar + 4, 0x05)) { // empty avatar - unlink image, clear hash
if (!getSetting(hContact, "AvatarHash", &dbv)) { // contact had avatar, clear hash, notify UI
db_free(&dbv);
debugLogA("%s has removed Avatar.", strUID(dwUIN, szUID));
delSetting(hContact, "AvatarHash");
ProtoBroadcastAck(hContact, ACKTYPE_AVATAR, ACKRESULT_STATUS, nullptr, 0);
}
else debugLogA("%s has empty Avatar.", strUID(dwUIN, szUID));
return;
}
if (getSetting(hContact, "AvatarHash", &dbv)) { // we did not find old avatar hash, i.e. get new avatar
int avatarState = IsAvatarChanged(hContact, pAvatarHash, cbAvatarHash);
// check saved hash and file, if equal only store hash
if (!avatarState) { // hashes are the same
int dwPaFormat = getByte(hContact, "AvatarType", PA_FORMAT_UNKNOWN);
GetFullAvatarFileName(dwUIN, szUID, dwPaFormat, tszAvatar, MAX_PATH * 2);
if (_waccess(tszAvatar, 0) == 0) { // the file is there, link to contactphoto, save hash
debugLogA("%s has published Avatar. Image was found in the cache.", strUID(dwUIN, szUID));
setSettingBlob(hContact, "AvatarHash", pAvatarHash, cbAvatarHash);
ProtoBroadcastAck(hContact, ACKTYPE_AVATAR, ACKRESULT_STATUS, nullptr, 0);
}
else { // the file was lost, request avatar again
debugLogA("%s has published Avatar.", strUID(dwUIN, szUID));
bJob = TRUE;
}
}
else { // the hash is not the one we want, request avatar
debugLogA("%s has published a new Avatar.", strUID(dwUIN, szUID));
bJob = TRUE;
}
}
else { // we found hash check if it changed or not
if ((dbv.cpbVal != cbAvatarHash) || memcmp(dbv.pbVal, pAvatarHash, cbAvatarHash)) { // the hash is different, request new avatar
debugLogA("%s has changed Avatar.", strUID(dwUIN, szUID));
bJob = TRUE;
}
else { // the hash was not changed, check if we have the correct file
int avatarState = IsAvatarChanged(hContact, pAvatarHash, cbAvatarHash);
// we should have file, check if the file really exists
if (!avatarState) {
int dwPaFormat = getByte(hContact, "AvatarType", PA_FORMAT_UNKNOWN);
if (dwPaFormat == PA_FORMAT_UNKNOWN) { // we do not know the format, get avatar again
debugLogA("%s has Avatar. Image is missing.", strUID(dwUIN, szUID));
bJob = 2;
}
else {
GetFullAvatarFileName(dwUIN, szUID, dwPaFormat, tszAvatar, MAX_PATH * 2);
if (_waccess(tszAvatar, 0) != 0) { // the file was lost, get it again
debugLogA("%s has Avatar. Image is missing.", strUID(dwUIN, szUID));
bJob = 2;
}
else debugLogA("%s has Avatar. Image was found in the cache.", strUID(dwUIN, szUID));
}
}
else { // the hash is not the one we want, request avatar
debugLogA("%s has Avatar. Image was not retrieved yet.", strUID(dwUIN, szUID));
bJob = 2;
}
}
db_free(&dbv);
}
if (bJob) {
if (bJob == TRUE) { // Remove possible block - hash changed, try again.
mir_cslock l(m_avatarsMutex);
for (auto &it : m_arAvatars) {
if (it->hContact == hContact && it->type == ART_BLOCK) { // found one, remove
delete it;
m_arAvatars.removeItem(&it);
break;
}
}
}
setSettingBlob(hContact, "AvatarHash", pAvatarHash, cbAvatarHash);
ProtoBroadcastAck(hContact, ACKTYPE_AVATAR, ACKRESULT_STATUS, nullptr, 0);
if (bAutoLoad) { // auto-load is on, so request the avatar now, otherwise we are done
GetAvatarFileName(dwUIN, szUID, tszAvatar, MAX_PATH * 2);
GetAvatarData(hContact, dwUIN, szUID, pAvatarHash, cbAvatarHash, tszAvatar);
} // avatar request sent or added to queue
}
}
else if (avatarInfoPresent) { // hash was not found, clear the hash
DBVARIANT dbv = { DBVT_DELETED };
if (!getSetting(hContact, "AvatarHash", &dbv)) { // contact had avatar, clear hash, notify UI
db_free(&dbv);
debugLogA("%s has removed Avatar.", strUID(dwUIN, szUID));
delSetting(hContact, "AvatarHash");
ProtoBroadcastAck(hContact, ACKTYPE_AVATAR, ACKRESULT_STATUS, nullptr, 0);
}
else debugLogA("%s has no Avatar.", strUID(dwUIN, szUID));
}
}
// request avatar data from server
int CIcqProto::GetAvatarData(MCONTACT hContact, DWORD dwUin, const char *szUid, const BYTE *hash, size_t hashlen, const wchar_t *file)
{
uid_str szUidData;
char *pszUid = nullptr;
if (!dwUin && szUid) { // create a copy in local writable buffer
mir_strcpy(szUidData, szUid);
pszUid = szUidData;
}
mir_cslockfull alck(m_avatarsMutex);
if (m_avatarsConnection && m_avatarsConnection->isReady()) { // check if we are ready
// check if requests for this user are not blocked
auto T = m_arAvatars.rev_iter();
for (auto &ar : T) {
if (ar->hContact == hContact && ar->type == ART_BLOCK) { // found a block item
if (GetTickCount() > ar->timeOut) { // remove timeouted block
delete ar;
m_arAvatars.remove(T.indexOf(&ar));
continue;
}
debugLogA("Avatars: Requests for %s avatar are blocked.", strUID(dwUin, pszUid));
return 0;
}
}
mir_cslock l(m_avatarsConnection->getLock());
alck.unlock();
DWORD dwCookie = m_avatarsConnection->sendGetAvatarRequest(hContact, dwUin, pszUid, hash, hashlen, file);
if (dwCookie) // return now if the request was sent successfully
return dwCookie;
alck.lock();
}
// we failed to send request, or avatar thread not ready
// check if any request for this user is not already in the queue
auto T = m_arAvatars.rev_iter();
for (auto &ar : T) {
if (ar->hContact == hContact) { // we found it, return error
if (ar->type == ART_BLOCK && GetTickCount() > ar->timeOut) { // remove timeouted block
delete ar;
m_arAvatars.remove(T.indexOf(&ar));
continue;
}
alck.unlock();
debugLogA("Avatars: Ignoring duplicate get %s avatar request.", strUID(dwUin, pszUid));
// make sure avatar connection is in progress
requestAvatarConnection();
return 0;
}
}
// add request to queue, processed after successful login
avatars_request *ar = new avatars_request(ART_GET); // get avatar
ar->hContact = hContact;
ar->dwUin = dwUin;
if (!dwUin)
mir_strcpy(ar->szUid, szUid);
ar->hash = (BYTE*)SAFE_MALLOC(hashlen);
if (!ar->hash) { // alloc failed
delete ar;
return 0;
}
memcpy(ar->hash, hash, hashlen); // copy the data
ar->hashlen = hashlen;
ar->szFile = null_strdup(file); // duplicate the string
m_arAvatars.insert(ar);
alck.unlock();
debugLogA("Avatars: Request to get %s image added to queue.", strUID(dwUin, pszUid));
// make sure avatar connection is in progress
requestAvatarConnection();
return -1; // we added to queue
}
// upload avatar data to server
int CIcqProto::SetAvatarData(MCONTACT hContact, WORD wRef, const BYTE *data, size_t datalen)
{
mir_cslockfull alck(m_avatarsMutex);
if (m_avatarsConnection && m_avatarsConnection->isReady()) { // check if we are ready
mir_cslock l(m_avatarsConnection->getLock());
alck.unlock();
DWORD dwCookie = m_avatarsConnection->sendUploadAvatarRequest(hContact, wRef, data, datalen);
if (dwCookie) // return now if the request was sent successfully
return dwCookie;
alck.lock();
}
// we failed to send request, or avatar thread not ready
// check if any request for this user is not already in the queue
for (auto ar : m_arAvatars) {
if (ar->hContact == hContact && ar->type == ART_UPLOAD) { // we found it, return error
alck.unlock();
debugLogA("Avatars: Ignoring duplicate upload avatar request.");
// make sure avatar connection is in progress
requestAvatarConnection();
return 0;
}
}
// add request to queue, processed after successful login
avatars_request *ar = new avatars_request(ART_UPLOAD); // upload avatar
ar->hContact = hContact;
ar->pData = (BYTE*)SAFE_MALLOC(datalen);
if (!ar->pData) { // alloc failed
delete ar;
return 0;
}
memcpy(ar->pData, data, datalen); // copy the data
ar->cbData = datalen;
ar->wRef = wRef;
m_arAvatars.insert(ar);
alck.unlock();
debugLogA("Avatars: Request to upload image added to queue.");
// make sure avatar connection is in progress
requestAvatarConnection();
return -1; // we added to queue
}
void CIcqProto::requestAvatarConnection()
{
mir_cslockfull alck(m_avatarsMutex);
if (!m_avatarsConnectionPending && (!m_avatarsConnection || (!m_avatarsConnection->isPending() && !m_avatarsConnection->isReady()))) {
// avatar connection is not pending, request new one
m_avatarsConnectionPending = TRUE;
alck.unlock();
icq_requestnewfamily(ICQ_AVATAR_FAMILY, &CIcqProto::StartAvatarThread);
}
}
void __cdecl CIcqProto::AvatarThread(avatars_server_connection *pInfo)
{
debugLogA("%s thread started.", "Avatar");
Thread_SetName("ICQ: AvatarThread");
// Execute connection handler
pInfo->connectionThread();
{
// Remove connection reference
mir_cslock l(m_avatarsMutex);
if (m_avatarsConnection == pInfo)
m_avatarsConnection = nullptr;
// Release connection handler
delete pInfo;
}
debugLogA("%s thread ended.", "Avatar");
}
avatars_server_connection::avatars_server_connection(CIcqProto *_ppro, HNETLIBCONN _hConnection, char *_pCookie, size_t _wCookieLen) :
isLoggedIn(false), stopThread(false), isActive(false),
ppro(_ppro),
pCookie(_pCookie),
wCookieLen(_wCookieLen),
hConnection(_hConnection)
{
// Initialize packet sequence
wLocalSequence = generate_flap_sequence();
// Create connection thread
ppro->ForkThread((CIcqProto::MyThreadFunc)&CIcqProto::AvatarThread, this);
}
avatars_server_connection::~avatars_server_connection()
{
delete m_rates;
}
void avatars_server_connection::closeConnection()
{
stopThread = TRUE;
mir_cslock l(localSeqMutex);
if (hConnection) {
Netlib_CloseHandle(hConnection);
hConnection = nullptr;
}
}
void avatars_server_connection::shutdownConnection()
{
stopThread = TRUE;
mir_cslock l(localSeqMutex);
if (hConnection)
Netlib_Shutdown(hConnection);
}
DWORD avatars_server_connection::sendGetAvatarRequest(MCONTACT hContact, DWORD dwUin, char *szUid, const BYTE *hash, size_t hashlen, const wchar_t *file)
{
DWORD dwNow = GetTickCount();
mir_cslockfull alck(ppro->m_avatarsMutex);
for (int i = 0; i < runCount;) { // look for timeouted requests
if (runTime[i] < dwNow) { // found outdated, remove
runContact[i] = runContact[runCount - 1];
runTime[i] = runTime[runCount - 1];
runCount--;
}
else i++;
}
for (int i = 0; i < runCount; i++) {
if (runContact[i] == hContact) {
ppro->debugLogA("Ignoring duplicate get %s image request.", strUID(dwUin, szUid));
return -1; // Success: request ignored
}
}
if (runCount < 4) { // 4 concurent requests at most
int bSendNow = TRUE;
{
// rate management
mir_cslock l(m_ratesMutex);
WORD wGroup = m_rates->getGroupFromSNAC(ICQ_AVATAR_FAMILY, ICQ_AVATAR_GET_REQUEST);
if (m_rates->getNextRateLevel(wGroup) < m_rates->getLimitLevel(wGroup, RML_ALERT)) { // we will be over quota if we send the request now, add to queue instead
bSendNow = FALSE;
ppro->debugLogA("Rates: Delay avatar request.");
}
}
if (bSendNow) {
runContact[runCount] = hContact;
runTime[runCount] = GetTickCount() + 30000; // 30sec to complete request
runCount++;
alck.unlock();
int nUinLen = getUIDLen(dwUin, szUid);
cookie_avatar *ack = (cookie_avatar*)SAFE_MALLOC(sizeof(cookie_avatar));
if (!ack)
return 0; // Failure: out of memory
ack->dwUin = 1; //dwUin; // I should be damned for this - only to identify get request
ack->hContact = hContact;
ack->hash = (BYTE*)SAFE_MALLOC(hashlen);
memcpy(ack->hash, hash, hashlen); // copy the data
ack->hashlen = hashlen;
ack->szFile = null_strdup(file); // duplicate the string
DWORD dwCookie = ppro->AllocateCookie(CKT_AVATAR, ICQ_AVATAR_GET_REQUEST, hContact, ack);
icq_packet packet;
serverPacketInit(&packet, 12 + nUinLen + hashlen);
packFNACHeader(&packet, ICQ_AVATAR_FAMILY, ICQ_AVATAR_GET_REQUEST, 0, dwCookie);
packUID(&packet, dwUin, szUid);
packByte(&packet, 1); // unknown, probably type of request: 1 = get icon :)
packBuffer(&packet, hash, hashlen);
if (sendServerPacket(&packet)) {
ppro->debugLogA("Request to get %s image sent.", strUID(dwUin, szUid));
return dwCookie;
}
ppro->FreeCookie(dwCookie); // sending failed, free resources
SAFE_FREE(&ack->szFile);
SAFE_FREE((void**)&ack->hash);
SAFE_FREE((void**)&ack);
}
}
return 0; // Failure
}
DWORD avatars_server_connection::sendUploadAvatarRequest(MCONTACT hContact, WORD wRef, const BYTE *data, size_t datalen)
{
cookie_avatar *ack = (cookie_avatar*)SAFE_MALLOC(sizeof(cookie_avatar));
if (!ack)
return 0; // Failure: out of memory
ack->hContact = hContact;
DWORD dwCookie = ppro->AllocateCookie(CKT_AVATAR, ICQ_AVATAR_UPLOAD_REQUEST, 0, ack);
icq_packet packet;
serverPacketInit(&packet, 14 + datalen);
packFNACHeader(&packet, ICQ_AVATAR_FAMILY, ICQ_AVATAR_UPLOAD_REQUEST, 0, dwCookie);
packWord(&packet, wRef); // unknown, probably reference
packWord(&packet, (WORD)datalen);
packBuffer(&packet, data, datalen);
if (sendServerPacket(&packet)) {
ppro->debugLogA("Upload image packet sent.");
return dwCookie;
}
ppro->ReleaseCookie(dwCookie); // failed to send, free resources
return 0;
}
void avatars_server_connection::checkRequestQueue()
{
mir_cslockfull alck(ppro->m_avatarsMutex);
while (ppro->m_arAvatars.getCount() && runCount < 3) { // pick up an request and send it - happens immediatelly after login
// do not fill queue to top, leave one place free
avatars_request *pRequest = ppro->m_arAvatars[0];
{
// rate management
mir_cslock l(m_ratesMutex);
WORD wGroup = m_rates->getGroupFromSNAC(ICQ_AVATAR_FAMILY, (WORD)(pRequest->type == ART_UPLOAD ? ICQ_AVATAR_GET_REQUEST : ICQ_AVATAR_UPLOAD_REQUEST));
// we are over rate, leave queue and wait
if (m_rates->getNextRateLevel(wGroup) < m_rates->getLimitLevel(wGroup, RML_ALERT))
break;
}
if (pRequest->type == ART_BLOCK) { // block contact processing
auto T = ppro->m_arAvatars.rev_iter();
for (auto &ar : T) {
if (GetTickCount() > ar->timeOut) { // expired contact block, remove
delete ar;
ppro->m_arAvatars.remove(T.indexOf(&ar));
}
}
return; // end processing
}
ppro->m_arAvatars.remove(int(0));
alck.unlock();
switch (pRequest->type) {
case ART_GET: // get avatar
sendGetAvatarRequest(pRequest->hContact, pRequest->dwUin, pRequest->szUid, pRequest->hash, pRequest->hashlen, pRequest->szFile);
break;
case ART_UPLOAD: // set avatar
sendUploadAvatarRequest(pRequest->hContact, pRequest->wRef, pRequest->pData, pRequest->cbData);
break;
}
delete pRequest;
alck.lock();
}
}
void avatars_server_connection::connectionThread()
{
// This is the "infinite" loop that receives the packets from the ICQ avatar server
DWORD dwLastKeepAlive = time(0) + KEEPALIVE_INTERVAL;
hPacketRecver = Netlib_CreatePacketReceiver(hConnection, 65536);
NETLIBPACKETRECVER packetRecv = {};
packetRecv.dwTimeout = 1000; // timeout - for stopThread to work
while (!stopThread) {
int recvResult = Netlib_GetMorePackets(hPacketRecver, &packetRecv);
if (recvResult == 0) {
ppro->debugLogA("Clean closure of avatar socket");
break;
}
if (recvResult == SOCKET_ERROR) {
if (GetLastError() == ERROR_TIMEOUT) { // timeout, check if we should be still running
if (Miranda_IsTerminated())
break;
if (time(0) >= dwLastKeepAlive) { // limit frequency (HACK: on some systems select() does not work well)
if (!ppro->m_bGatewayMode && ppro->getByte("KeepAlive", DEFAULT_KEEPALIVE_ENABLED)) { // send keep-alive packet
icq_packet packet;
packet.wLen = 0;
write_flap(&packet, ICQ_PING_CHAN);
sendServerPacket(&packet);
}
dwLastKeepAlive = time(0) + KEEPALIVE_INTERVAL;
}
// check if we got something to request
checkRequestQueue();
continue;
}
if (!stopThread)
ppro->debugLogA("Avatar socket closed abortively, error: %d", GetLastError());
else
ppro->debugLogA("Avatar socket gracefully closed.");
break;
}
// Deal with the packet
packetRecv.bytesUsed = handleServerPackets(packetRecv.buffer, packetRecv.bytesAvailable);
if (isActive && (packetRecv.bytesAvailable == packetRecv.bytesUsed)) // no packets pending
checkRequestQueue(); // process request queue
}
{
// release connection
mir_cslock l(localSeqMutex);
NetLib_SafeCloseHandle(&hPacketRecver); // Close the packet receiver
NetLib_CloseConnection(&hConnection, FALSE); // Close the connection
}
{
// release rates
mir_cslock l(m_ratesMutex);
delete m_rates; m_rates = nullptr;
}
SAFE_FREE((void**)&pCookie);
}
int avatars_server_connection::sendServerPacket(icq_packet *pPacket)
{
int lResult = 0;
// This critsec makes sure that the sequence order doesn't get screwed up
mir_cslock l(localSeqMutex);
if (hConnection) {
// :IMPORTANT:
// The FLAP sequence must be a WORD. When it reaches 0xFFFF it should wrap to
// 0x0000, otherwise we'll get kicked by server.
wLocalSequence++;
// Pack sequence number
pPacket->pData[2] = ((wLocalSequence & 0xff00) >> 8);
pPacket->pData[3] = (wLocalSequence & 0x00ff);
int nSendResult;
for (int nRetries = 3; nRetries >= 0; nRetries--) {
nSendResult = Netlib_Send(hConnection, (const char*)pPacket->pData, (int)pPacket->wLen, 0);
if (nSendResult != SOCKET_ERROR)
break;
Sleep(1000);
}
// Send error
if (nSendResult == SOCKET_ERROR) // thread stops automatically
ppro->debugLogA("Your connection with the ICQ avatar server was abortively closed");
else {
lResult = 1; // packet sent successfully
mir_cslock rlck(m_ratesMutex);
if (m_rates)
m_rates->packetSent(pPacket);
}
}
else ppro->debugLogA("Error: Failed to send packet (no connection)");
SAFE_FREE((void**)&pPacket->pData);
return lResult;
}
int avatars_server_connection::handleServerPackets(BYTE *buf, size_t buflen)
{
BYTE channel;
WORD sequence;
size_t datalen, bytesUsed = 0;
while (buflen > 0) {
// All FLAPS begin with 0x2a
if (*buf++ != FLAP_MARKER)
break;
if (buflen < 6)
break;
unpackByte(&buf, &channel);
unpackWord(&buf, &sequence);
unpackWord(&buf, &datalen);
if (buflen < 6 + datalen)
break;
ppro->debugLogA("Server FLAP: Channel %u, Seq %u, Length %u bytes", channel, sequence, datalen);
switch (channel) {
case ICQ_LOGIN_CHAN:
handleLoginChannel(buf);
break;
case ICQ_DATA_CHAN:
handleDataChannel(buf, datalen);
break;
default:
ppro->debugLogA("Warning: Unhandled Server FLAP Channel: Channel %u, Seq %u, Length %u bytes", channel, sequence, datalen);
break;
}
/* Increase pointers so we can check for more FLAPs */
buf += datalen;
buflen -= (datalen + 6);
bytesUsed += (datalen + 6);
}
return (int)bytesUsed;
}
void avatars_server_connection::handleLoginChannel(BYTE *buf)
{
if (*(DWORD*)buf == 0x1000000) { // here check if we received SRV_HELLO
wLocalSequence = generate_flap_sequence();
icq_packet packet;
serverCookieInit(&packet, (LPBYTE)pCookie, wCookieLen);
sendServerPacket(&packet);
ppro->debugLogA("Sent CLI_IDENT to %s", "avatar server");
SAFE_FREE((void**)&pCookie);
wCookieLen = 0;
}
else ppro->debugLogA("Invalid Server response, Channel 1.");
}
void avatars_server_connection::handleDataChannel(BYTE *buf, size_t datalen)
{
snac_header snacHeader = {0};
if (!unpackSnacHeader(&snacHeader, &buf, &datalen) || !snacHeader.bValid)
ppro->debugLogA("Error: Failed to parse SNAC header");
else {
if (snacHeader.wFlags & 0x8000)
ppro->debugLogA(" Received SNAC(x%02X,x%02X), version %u", snacHeader.wFamily, snacHeader.wSubtype, snacHeader.wVersion);
else
ppro->debugLogA(" Received SNAC(x%02X,x%02X)", snacHeader.wFamily, snacHeader.wSubtype);
switch (snacHeader.wFamily) {
case ICQ_SERVICE_FAMILY:
handleServiceFam(buf, datalen, &snacHeader);
break;
case ICQ_AVATAR_FAMILY:
handleAvatarFam(buf, datalen, &snacHeader);
break;
default:
ppro->debugLogA("Ignoring SNAC(x%02X,x%02X) - FAMILYx%02X not implemented", snacHeader.wFamily, snacHeader.wSubtype, snacHeader.wFamily);
break;
}
}
}
void avatars_server_connection::handleServiceFam(BYTE *pBuffer, size_t wBufferLength, snac_header *pSnacHeader)
{
icq_packet packet;
switch (pSnacHeader->wSubtype) {
case ICQ_SERVER_READY:
ppro->debugLogA("Server is ready and is requesting my Family versions");
ppro->debugLogA("Sending my Families");
// Miranda mimics the behaviour of Icq5
serverPacketInit(&packet, 18);
packFNACHeader(&packet, ICQ_SERVICE_FAMILY, ICQ_CLIENT_FAMILIES);
packDWord(&packet, 0x00010004);
packDWord(&packet, 0x00100001);
sendServerPacket(&packet);
break;
case ICQ_SERVER_FAMILIES2:
/* This is a reply to CLI_FAMILIES and it tells the client which families and their versions that this server understands.
* We send a rate request packet */
ppro->debugLogA("Server told me his Family versions");
ppro->debugLogA("Requesting Rate Information");
serverPacketInit(&packet, 10);
packFNACHeader(&packet, ICQ_SERVICE_FAMILY, ICQ_CLIENT_REQ_RATE_INFO);
sendServerPacket(&packet);
break;
case ICQ_SERVER_RATE_INFO:
ppro->debugLogA("Server sent Rate Info");
/* init rates management */
m_rates = new rates(ppro, pBuffer, wBufferLength);
/* ack rate levels */
ppro->debugLogA("Sending Rate Info Ack");
m_rates->initAckPacket(&packet);
sendServerPacket(&packet);
// send cli_ready
serverPacketInit(&packet, 26);
packFNACHeader(&packet, ICQ_SERVICE_FAMILY, ICQ_CLIENT_READY);
packDWord(&packet, 0x00010004); // mimic ICQ 6
packDWord(&packet, 0x0010164f);
packDWord(&packet, 0x00100001);
packDWord(&packet, 0x0010164f);
sendServerPacket(&packet);
isActive = TRUE; // we are ready to process requests
isLoggedIn = TRUE;
ppro->debugLogA(" *** Yeehah, login sequence complete");
break;
default:
ppro->debugLogA("Warning: Ignoring SNAC(x%02x,x%02x) - Unknown SNAC (Flags: %u, Ref: %u)", ICQ_SERVICE_FAMILY, pSnacHeader->wSubtype, pSnacHeader->wFlags, pSnacHeader->dwRef);
break;
}
}
void avatars_server_connection::handleAvatarFam(BYTE *pBuffer, size_t wBufferLength, snac_header *pSnacHeader)
{
cookie_avatar *pCookieData;
switch (pSnacHeader->wSubtype) {
case ICQ_AVATAR_GET_REPLY: // received avatar data, store to file
// handle new avatar, notify
if (ppro->FindCookie(pSnacHeader->dwRef, nullptr, (void**)&pCookieData)) {
BYTE bResult;
{
// remove from active request list
mir_cslock l(ppro->m_avatarsMutex);
for (int i = 0; i < runCount; i++) { // look for our record
if (runContact[i] == pCookieData->hContact) { // found, remove
runContact[i] = runContact[runCount - 1];
runTime[i] = runTime[runCount - 1];
runCount--;
break;
}
}
}
PROTO_AVATAR_INFORMATION ai = { 0 };
ai.format = PA_FORMAT_JPEG; // this is for error only
ai.hContact = pCookieData->hContact;
mir_wstrncpy(ai.filename, pCookieData->szFile, _countof(ai.filename));
AddAvatarExt(PA_FORMAT_JPEG, ai.filename);
ppro->FreeCookie(pSnacHeader->dwRef);
BYTE len;
unpackByte(&pBuffer, &len);
if (wBufferLength < ((pCookieData->hashlen) << 1) + 4 + len) {
ppro->debugLogA("Received invalid avatar reply.");
ppro->ProtoBroadcastAck(pCookieData->hContact, ACKTYPE_AVATAR, ACKRESULT_FAILED, (HANDLE)&ai, 0);
SAFE_FREE(&pCookieData->szFile);
SAFE_FREE((void**)&pCookieData->hash);
SAFE_FREE((void**)&pCookieData);
break;
}
pBuffer += len;
pBuffer += pCookieData->hashlen;
unpackByte(&pBuffer, &bResult);
pBuffer += pCookieData->hashlen;
size_t datalen;
unpackWord(&pBuffer, &datalen);
wBufferLength -= 4 + len + (pCookieData->hashlen << 1);
if (datalen > wBufferLength) {
datalen = wBufferLength;
ppro->debugLogA("Avatar reply broken, trying to do my best.");
}
if (datalen > 4) { // store to file...
int aValid = 1;
if (pCookieData->hashlen == 0x14 && pCookieData->hash[3] == 0x10 && ppro->getByte("StrictAvatarCheck", DEFAULT_AVATARS_CHECK)) { // check only standard hashes
mir_md5_state_t state;
BYTE digest[16];
mir_md5_init(&state);
mir_md5_append(&state, (const BYTE *)pBuffer, (int)datalen);
mir_md5_finish(&state, digest);
// check if received data corresponds to specified hash
if (memcmp(pCookieData->hash + 4, digest, 0x10)) aValid = 0;
}
if (aValid) {
ppro->debugLogA("Received user avatar, storing (%d bytes).", datalen);
const wchar_t *ptszExt;
int dwPaFormat = ProtoGetBufferFormat(pBuffer, &ptszExt);
wchar_t tszImageFile[MAX_PATH];
mir_snwprintf(tszImageFile, L"%s%s", pCookieData->szFile, ptszExt);
ppro->setByte(pCookieData->hContact, "AvatarType", (BYTE)dwPaFormat);
ai.format = dwPaFormat; // set the format
mir_wstrncpy(ai.filename, tszImageFile, _countof(ai.filename));
int out = _wopen(tszImageFile, _O_BINARY | _O_CREAT | _O_TRUNC | _O_WRONLY, _S_IREAD | _S_IWRITE);
if (out != -1) {
_write(out, pBuffer, (int)datalen);
_close(out);
if (!pCookieData->hContact) { // our avatar, set filename
wchar_t tmp[MAX_PATH * 2];
PathToRelativeW(tszImageFile, tmp);
ppro->setWString(NULL, "AvatarFile", tmp);
}
else { // contact's avatar set hash
DBVARIANT dbv = { DBVT_DELETED };
if (!ppro->getSetting(pCookieData->hContact, "AvatarHash", &dbv)) {
if (ppro->setSettingBlob(pCookieData->hContact, "AvatarSaved", dbv.pbVal, dbv.cpbVal))
ppro->debugLogA("Failed to set file hash.");
db_free(&dbv);
}
else {
ppro->debugLogA("Warning: DB error (no hash in DB).");
// the hash was lost, try to fix that
if (ppro->setSettingBlob(pCookieData->hContact, "AvatarSaved", pCookieData->hash, (int)pCookieData->hashlen) ||
ppro->setSettingBlob(pCookieData->hContact, "AvatarHash", pCookieData->hash, (int)pCookieData->hashlen))
{
ppro->debugLogA("Failed to save avatar hash to DB");
}
}
}
ppro->ProtoBroadcastAck(pCookieData->hContact, ACKTYPE_AVATAR, ACKRESULT_SUCCESS, (HANDLE)&ai, 0);
}
}
else { // avatar is broken
ppro->debugLogA("Error: Avatar data does not match avatar hash, ignoring.");
if (pCookieData->hContact) {
avatars_request *ar = new avatars_request(ART_BLOCK);
ar->hContact = pCookieData->hContact;
ar->timeOut = GetTickCount() + 14400000; // do not allow re-request four hours
mir_cslock l(ppro->m_avatarsMutex);
ppro->m_arAvatars.insert(ar);
}
ppro->ProtoBroadcastAck(pCookieData->hContact, ACKTYPE_AVATAR, ACKRESULT_FAILED, (HANDLE)&ai, 0);
}
}
else { // the avatar is empty
ppro->debugLogA("Received empty avatar, nothing written (error 0x%x).", bResult);
ppro->ProtoBroadcastAck(pCookieData->hContact, ACKTYPE_AVATAR, ACKRESULT_FAILED, (HANDLE)&ai, 0);
}
SAFE_FREE(&pCookieData->szFile);
SAFE_FREE((void**)&pCookieData->hash);
SAFE_FREE((void**)&pCookieData);
}
else ppro->debugLogA("Warning: Received unexpected Avatar Reply SNAC(x10,x07).");
break;
case ICQ_AVATAR_UPLOAD_ACK:
// upload completed, notify
BYTE res;
unpackByte(&pBuffer, &res);
if (!res && (wBufferLength == 0x15)) {
if (ppro->FindCookie(pSnacHeader->dwRef, nullptr, (void**)&pCookieData)) // here we store the local hash
ppro->ReleaseCookie(pSnacHeader->dwRef);
else
ppro->debugLogA("Warning: Received unexpected Upload Avatar Reply SNAC(x10,x03).");
}
else if (res) {
ppro->debugLogA("Error uploading avatar to server, #%d", res);
ppro->icq_LogMessage(LOG_WARNING, LPGEN("Error uploading avatar to server, server refused to accept the image."));
}
else ppro->debugLogA("Received invalid upload avatar ack.");
break;
case ICQ_ERROR:
if (ppro->FindCookie(pSnacHeader->dwRef, nullptr, (void**)&pCookieData)) {
if (pCookieData->dwUin) {
ppro->debugLogA("Error: Avatar request failed");
SAFE_FREE(&pCookieData->szFile);
SAFE_FREE((void**)&pCookieData->hash);
}
else ppro->debugLogA("Error: Avatar upload failed");
ppro->ReleaseCookie(pSnacHeader->dwRef);
}
WORD wError;
if (wBufferLength >= 2)
unpackWord(&pBuffer, &wError);
else
wError = 0;
ppro->LogFamilyError(ICQ_AVATAR_FAMILY, wError);
break;
default:
ppro->debugLogA("Warning: Ignoring SNAC(x%02x,x%02x) - Unknown SNAC (Flags: %u, Ref: %u)", ICQ_AVATAR_FAMILY, pSnacHeader->wSubtype, pSnacHeader->wFlags, pSnacHeader->dwRef);
break;
}
}
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