static int
unify_hsz(DWORD ddeInst, term_t term, HSZ hsz)
{ wchar_t buf[FASTBUFSIZE];
int len;
if ( !(len=DdeQueryStringW(ddeInst, hsz, buf,
sizeof(buf)/sizeof(wchar_t)-1, CP_WINUNICODE)) )
{ dde_warning("string handle");
return NULL_ATOM;
}
if ( len == sizeof(buf)/sizeof(wchar_t)-1 )
{ if ( (len=DdeQueryStringW(ddeInst, hsz, NULL, 0, CP_WINUNICODE)) > 0 )
{ wchar_t *b2;
int rc;
if ( !(b2 = malloc((len+1)*sizeof(wchar_t))) )
return PL_no_memory();
DdeQueryStringW(ddeInst, hsz, b2, len+1, CP_WINUNICODE);
rc = PL_unify_wchars(term, PL_ATOM, len, b2);
free(b2);
return rc;
}
dde_warning("string handle");
}
return PL_unify_wchars(term, PL_ATOM, len, buf);
}
static void Dde_OnConnectConfirm(HCONV hconv, HSZ hszTopic, HSZ hszService)
{
WCHAR szTopic[MAX_PATH];
WCHAR szService[MAX_PATH];
DdeQueryStringW(dwDDEInst, hszTopic, szTopic, _countof(szTopic), CP_WINUNICODE);
DdeQueryStringW(dwDDEInst, hszService, szService, _countof(szService), CP_WINUNICODE);
TRACE("Dde_OnConnectConfirm: hconv=%p, topic=%S, service=%S\n", hconv, szTopic, szService);
}
static HDDEDATA Dde_OnRequest(UINT uFmt, HCONV hconv, HSZ hszTopic, HSZ hszItem)
{
WCHAR szTopic[MAX_PATH];
WCHAR szItem[MAX_PATH];
DdeQueryStringW(dwDDEInst, hszTopic, szTopic, _countof(szTopic), CP_WINUNICODE);
DdeQueryStringW(dwDDEInst, hszItem, szItem, _countof(szItem), CP_WINUNICODE);
TRACE("Dde_OnRequest: uFmt=%d, hconv=%p, topic=%S, item=%S\n", hconv, szTopic, szItem);
return NULL;
}
static BOOL Dde_OnWildConnect(HSZ hszTopic, HSZ hszService)
{
WCHAR szTopic[MAX_PATH];
WCHAR szService[MAX_PATH];
DdeQueryStringW(dwDDEInst, hszTopic, szTopic, _countof(szTopic), CP_WINUNICODE);
DdeQueryStringW(dwDDEInst, hszService, szService, _countof(szService), CP_WINUNICODE);
TRACE("Dde_OnWildConnect: topic=%S, service=%S\n", szTopic, szService);
return FALSE;
}
static const char *debugstr_hsz( HSZ hsz )
{
WCHAR buffer[256];
if (!DdeQueryStringW( dwDDEInst, hsz, buffer, sizeof(buffer)/sizeof(WCHAR), CP_WINUNICODE ))
return "<unknown>";
return debugstr_w( buffer );
}
/* Dde callback, save the execute or request string for processing */
static HDDEDATA CALLBACK ddeCb(UINT uType, UINT uFmt, HCONV hConv,
HSZ hsz1, HSZ hsz2, HDDEDATA hData,
ULONG_PTR dwData1, ULONG_PTR dwData2)
{
DWORD size = 0, ret = 0;
WINE_TRACE("dde_cb: %04x, %04x, %p, %p, %p, %p, %08lx, %08lx\n",
uType, uFmt, hConv, hsz1, hsz2, hData, dwData1, dwData2);
switch (uType)
{
case XTYP_CONNECT:
if (!DdeCmpStringHandles(hsz1, hszTopic))
return (HDDEDATA)TRUE;
return (HDDEDATA)FALSE;
case XTYP_EXECUTE:
if (!(size = DdeGetData(hData, NULL, 0, 0)))
WINE_ERR("DdeGetData returned zero size of execute string\n");
else if (!(ddeString = HeapAlloc(GetProcessHeap(), 0, size)))
WINE_ERR("Out of memory\n");
else if (DdeGetData(hData, (LPBYTE)ddeString, size, 0) != size)
WINE_WARN("DdeGetData did not return %d bytes\n", size);
DdeFreeDataHandle(hData);
return (HDDEDATA)DDE_FACK;
case XTYP_REQUEST:
ret = -3; /* error */
if (!(size = DdeQueryStringW(ddeInst, hsz2, NULL, 0, CP_WINUNICODE)))
WINE_ERR("DdeQueryString returned zero size of request string\n");
else if (!(ddeString = HeapAlloc(GetProcessHeap(), 0, (size + 1) * sizeof(WCHAR))))
WINE_ERR("Out of memory\n");
else if (DdeQueryStringW(ddeInst, hsz2, ddeString, size + 1, CP_WINUNICODE) != size)
WINE_WARN("DdeQueryString did not return %d characters\n", size);
else
ret = -2; /* acknowledgment */
return DdeCreateDataHandle(ddeInst, (LPBYTE)&ret, sizeof(ret), 0,
hszReturn, CF_TEXT, 0);
default:
return NULL;
}
}
static DWORD Dde_OnExecute(HCONV hconv, HSZ hszTopic, HDDEDATA hdata)
{
WCHAR szTopic[MAX_PATH];
WCHAR szCommand[MAX_PATH];
WCHAR *pszCommand;
DdeQueryStringW(dwDDEInst, hszTopic, szTopic, _countof(szTopic), CP_WINUNICODE);
pszCommand = (WCHAR*) DdeAccessData(hdata, NULL);
if (!pszCommand)
return DDE_FNOTPROCESSED;
StringCchCopyW(szCommand, _countof(szCommand), pszCommand);
DdeUnaccessData(hdata);
TRACE("Dde_OnExecute: hconv=%p, topic=%S, command=%S\n", hconv, szTopic, pszCommand);
/*
[ViewFolder("%l", %I, %S)] -- Open a folder in standard mode
[ExploreFolder("%l", %I, %S)] -- Open a folder in "explore" mode (file tree is shown to the left by default)
[FindFolder("%l", %I)] -- Open a folder in "find" mode (search panel is shown to the left by default)
[ShellFile("%1","%1",%S)] -- Execute the contents of the specified .SCF file
Approximate grammar (Upper names define rules, <lower> names define terminals, single-quotes are literals):
Rules
Command = ('[' Function ']') | Function
Function = <identifier> '(' Parameters ')'
Parameters = (<quoted-string> (',' <idlist> (',' <number>)?)?)?
Terminals
<identifier> = [a-zA-Z]+
<quoted-string> = \"([^\"]|\\.)\"
<idlist> = \:[0-9]+\:[0-9]+
<number> = [0-9]+
*/
WCHAR Command[MAX_PATH] = L"";
WCHAR Path[MAX_PATH] = L"";
LPITEMIDLIST IdList = NULL;
INT UnknownParameter = 0;
// Simplified parsing (assumes the command will not be TOO broken):
PWSTR cmd = szCommand;
// 1. if starts with [, skip first char
if (*cmd == L'[')
cmd++;
if (*cmd == L']')
{
ERR("Empty command. Nothing to run.\n");
return DDE_FNOTPROCESSED;
}
// Read until first (, and take text before ( as command name
{
PWSTR cmdEnd = StrChrW(cmd, L'(');
if (!cmdEnd)
{
ERR("Could not find '('. Invalid command.\n");
return DDE_FNOTPROCESSED;
}
*cmdEnd = 0;
StringCchCopy(Command, _countof(Command), cmd);
cmd = cmdEnd + 1;
}
// Read first param after (, expecting quoted string
if (*cmd != L')')
{
// Copy unescaped string
PWSTR dst = Path;
BOOL isQuote = FALSE;
PWSTR arg = cmd;
while (*arg && (isQuote || *arg != L','))
{
if (*arg == L'"')
{
isQuote = !isQuote;
if (isQuote && arg != cmd) // do not copy the " at the beginning of the string
{
*(dst++) = L'"';
}
}
else
{
*(dst++) = *arg;
}
arg++;
}
cmd = arg + 1;
while (*cmd == L' ')
cmd++;
}
// Read second param, expecting an idlist in shared memory
if (*cmd != L')')
{
if (*cmd != ':')
{
ERR("Expected ':'. Invalid command.\n");
return DDE_FNOTPROCESSED;
}
PWSTR idlistEnd = StrChrW(cmd, L',');
if (!idlistEnd)
idlistEnd = StrChrW(cmd, L')');
if (!idlistEnd)
{
ERR("Expected ',' or ')'. Invalid command.\n");
return DDE_FNOTPROCESSED;
}
IdList = _ILReadFromSharedMemory(cmd);
cmd = idlistEnd + 1;
}
// Read third param, expecting an integer
if (*cmd != L')')
{
UnknownParameter = StrToIntW(cmd);
}
TRACE("Parse end: cmd=%S, S=%d, pidl=%p, path=%S\n", Command, UnknownParameter, IdList, Path);
// Find handler in list
for (int i = 0; i < HandlerListLength; i++)
{
DDECommandHandler & handler = HandlerList[i];
if (StrCmpW(handler.Command, Command) == 0)
{
return handler.Handler(Command, Path, IdList, UnknownParameter);
}
}
// No handler found
ERR("Unknown command %S\n", Command);
return DDE_FNOTPROCESSED;
}