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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 © 2012-2017 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:
//
// Contains helper functions to handle oscar user capabilities. Scanning and
// adding capabilities are assumed to be more timecritical than looking up
// capabilites. During the login sequence there could possibly be many hundred
// scans but only a few lookups. So when you add or change something in this
// code you must have this in mind, dont do anything that will slow down the
// adding process too much.
// -----------------------------------------------------------------------------
#include "stdafx.h"
struct icq_capability
{
DWORD capID; // A bitmask, we use it in order to save database space
capstr capCLSID; // A binary representation of a oscar capability
};
static const icq_capability CapabilityRecord[] =
{
{ CAPF_SRV_RELAY, { CAP_SRV_RELAY }},
{ CAPF_UTF, { CAP_UTF }},
{ CAPF_RTF, { CAP_RTF }},
{ CAPF_CONTACTS, { CAP_CONTACTS }},
{ CAPF_TYPING, { CAP_TYPING }},
{ CAPF_ICQDIRECT, { CAP_ICQDIRECT }},
{ CAPF_XTRAZ, { CAP_XTRAZ }},
{ CAPF_OSCAR_FILE, { CAP_OSCAR_FILE }}
};
// Mask of all handled capabilities' flags
#define CapabilityFlagsMask (CAPF_SRV_RELAY | CAPF_UTF | CAPF_RTF | CAPF_CONTACTS | CAPF_TYPING | CAPF_ICQDIRECT | CAPF_XTRAZ | CAPF_OSCAR_FILE)
#ifdef _DEBUG
struct icq_capability_name
{
DWORD capID;
const char* capName;
};
static const icq_capability_name CapabilityNames[] =
{
{ CAPF_SRV_RELAY, "ServerRelay"},
{ CAPF_UTF, "UTF8 Messages"},
{ CAPF_RTF, "RTF Messages"},
{ CAPF_CONTACTS, "Contact Transfer"},
{ CAPF_TYPING, "Typing Notifications"},
{ CAPF_ICQDIRECT, "Direct Connections"},
{ CAPF_XTRAZ, "Xtraz"},
{ CAPF_OSCAR_FILE, "File Transfers"},
{ CAPF_STATUS_MESSAGES,"Individual Status Messages"},
{ CAPF_STATUS_MOOD, "Mood"},
{ CAPF_XSTATUS, "Custom Status"}
};
void NetLog_CapabilityChange(CIcqProto *ppro, const char *szChange, DWORD fdwCapabilities)
{
char szBuffer[MAX_PATH] = {0};
if (!fdwCapabilities) return;
for (int nIndex = 0; nIndex < _countof(CapabilityNames); nIndex++) {
// Check if the current capability is present
if ((fdwCapabilities & CapabilityNames[nIndex].capID) == CapabilityNames[nIndex].capID) {
if (mir_strlen(szBuffer))
mir_strcat(szBuffer, ", ");
mir_strcat(szBuffer, CapabilityNames[nIndex].capName);
}
}
// Log the change
ppro->debugLogA("Capabilities: %s %s", szChange, szBuffer);
}
#endif
// Deletes all oscar capabilities for a given contact
void CIcqProto::ClearAllContactCapabilities(MCONTACT hContact)
{
setDword(hContact, DBSETTING_CAPABILITIES, 0);
}
// Deletes one or many oscar capabilities for a given contact
void CIcqProto::ClearContactCapabilities(MCONTACT hContact, DWORD fdwCapabilities)
{
// Get current capability flags
DWORD fdwContactCaps = getDword(hContact, DBSETTING_CAPABILITIES, 0);
if (fdwContactCaps != (fdwContactCaps & ~fdwCapabilities)) {
#ifdef _DEBUG
NetLog_CapabilityChange(this, "Removed", fdwCapabilities & fdwContactCaps);
#endif
// Clear unwanted capabilities
fdwContactCaps &= ~fdwCapabilities;
// And write it back to disk
setDword(hContact, DBSETTING_CAPABILITIES, fdwContactCaps);
}
}
// Sets one or many oscar capabilities for a given contact
void CIcqProto::SetContactCapabilities(MCONTACT hContact, DWORD fdwCapabilities)
{
// Get current capability flags
DWORD fdwContactCaps = getDword(hContact, DBSETTING_CAPABILITIES, 0);
if (fdwContactCaps != (fdwContactCaps | fdwCapabilities)) {
#ifdef _DEBUG
NetLog_CapabilityChange(this, "Added", fdwCapabilities & ~fdwContactCaps);
#endif
// Update them
fdwContactCaps |= fdwCapabilities;
// And write it back to disk
setDword(hContact, DBSETTING_CAPABILITIES, fdwContactCaps);
}
}
// Returns true if the given contact supports the requested capabilites
BOOL CIcqProto::CheckContactCapabilities(MCONTACT hContact, DWORD fdwCapabilities)
{
// Get current capability flags
DWORD fdwContactCaps = getDword(hContact, DBSETTING_CAPABILITIES, 0);
// Check if all requested capabilities are supported
if ((fdwContactCaps & fdwCapabilities) == fdwCapabilities)
return TRUE;
return FALSE;
}
// Scan capability against the capability buffer
capstr* MatchCapability(BYTE *buf, size_t bufsize, const capstr *cap, size_t capsize)
{
while (bufsize >= BINARY_CAP_SIZE) { // search the buffer for a capability
if (!memcmp(buf, cap, capsize))
return (capstr*)buf; // give found capability for version info
buf += BINARY_CAP_SIZE;
bufsize -= BINARY_CAP_SIZE;
}
return nullptr;
}
// Scan short capability against the capability buffer
capstr* MatchShortCapability(BYTE *buf, size_t bufsize, const shortcapstr *cap)
{
capstr fullCap;
memcpy(fullCap, capShortCaps, BINARY_CAP_SIZE);
fullCap[2] = (*cap)[0];
fullCap[3] = (*cap)[1];
return MatchCapability(buf, bufsize, &fullCap, BINARY_CAP_SIZE);
}
// Scans a binary buffer for OSCAR capabilities.
DWORD GetCapabilitiesFromBuffer(BYTE *pBuffer, int nLength)
{
DWORD fdwCaps = 0;
// Calculate the number of records
int nRecordSize = _countof(CapabilityRecord);
// Loop over all capabilities in the buffer and
// compare them to our own record of capabilities
for (int nIndex = 0; nIndex < nRecordSize; nIndex++) {
// Match, add capability flag
if (MatchCapability(pBuffer, nLength, &CapabilityRecord[nIndex].capCLSID, BINARY_CAP_SIZE))
fdwCaps |= CapabilityRecord[nIndex].capID;
}
return fdwCaps;
}
// Scans a binary buffer for oscar capabilities and adds them to the contact.
// You probably want to call ClearAllContactCapabilities() first.
void CIcqProto::AddCapabilitiesFromBuffer(MCONTACT hContact, BYTE *pBuffer, int nLength)
{
// Get current capability flags
DWORD fdwContactCaps = getDword(hContact, DBSETTING_CAPABILITIES, 0);
// Get capability flags from buffer
DWORD fdwCapabilities = GetCapabilitiesFromBuffer(pBuffer, nLength);
if (fdwContactCaps != (fdwContactCaps | fdwCapabilities)) {
#ifdef _DEBUG
NetLog_CapabilityChange(this, "Added", fdwCapabilities & ~fdwContactCaps);
#endif
// Add capability flags from buffer
fdwContactCaps |= fdwCapabilities;
// And write them back to database
setDword(hContact, DBSETTING_CAPABILITIES, fdwContactCaps);
}
}
// Scans a binary buffer for oscar capabilities and adds them to the contact.
// You probably want to call ClearAllContactCapabilities() first.
void CIcqProto::SetCapabilitiesFromBuffer(MCONTACT hContact, BYTE *pBuffer, int nLength, BOOL bReset)
{
// Get current capability flags
DWORD fdwContactCaps = bReset ? 0 : getDword(hContact, DBSETTING_CAPABILITIES, 0);
// Get capability flags from buffer
DWORD fdwCapabilities = GetCapabilitiesFromBuffer(pBuffer, nLength);
#ifdef _DEBUG
if (bReset)
NetLog_CapabilityChange(this, "Set", fdwCapabilities);
else {
NetLog_CapabilityChange(this, "Removed", fdwContactCaps & ~fdwCapabilities & CapabilityFlagsMask);
NetLog_CapabilityChange(this, "Added", fdwCapabilities & ~fdwContactCaps);
}
#endif
if (fdwCapabilities != (fdwContactCaps & ~CapabilityFlagsMask)) {
// Get current unmanaged capability flags
fdwContactCaps &= ~CapabilityFlagsMask;
// Add capability flags from buffer
fdwContactCaps |= fdwCapabilities;
// And write them back to database
setDword(hContact, DBSETTING_CAPABILITIES, fdwContactCaps);
}
}
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