1 |
/* $Header$ */ |
2 |
/* |
3 |
* tclWinDde.c -- |
4 |
* |
5 |
* This file provides procedures that implement the "send" |
6 |
* command, allowing commands to be passed from interpreter |
7 |
* to interpreter. |
8 |
* |
9 |
* Copyright (c) 1997 by Sun Microsystems, Inc. |
10 |
* |
11 |
* See the file "license.terms" for information on usage and redistribution |
12 |
* of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
13 |
* |
14 |
* RCS: @(#) $Id: tclwindde.c,v 1.1.1.1 2001/06/13 04:48:43 dtashley Exp $ |
15 |
*/ |
16 |
|
17 |
#include "tclPort.h" |
18 |
#include <ddeml.h> |
19 |
|
20 |
/* |
21 |
* TCL_STORAGE_CLASS is set unconditionally to DLLEXPORT because the |
22 |
* Registry_Init declaration is in the source file itself, which is only |
23 |
* accessed when we are building a library. |
24 |
*/ |
25 |
|
26 |
#undef TCL_STORAGE_CLASS |
27 |
#define TCL_STORAGE_CLASS DLLEXPORT |
28 |
|
29 |
/* |
30 |
* The following structure is used to keep track of the interpreters |
31 |
* registered by this process. |
32 |
*/ |
33 |
|
34 |
typedef struct RegisteredInterp { |
35 |
struct RegisteredInterp *nextPtr; |
36 |
/* The next interp this application knows |
37 |
* about. */ |
38 |
char *name; /* Interpreter's name (malloc-ed). */ |
39 |
Tcl_Interp *interp; /* The interpreter attached to this name. */ |
40 |
} RegisteredInterp; |
41 |
|
42 |
/* |
43 |
* Used to keep track of conversations. |
44 |
*/ |
45 |
|
46 |
typedef struct Conversation { |
47 |
struct Conversation *nextPtr; |
48 |
/* The next conversation in the list. */ |
49 |
RegisteredInterp *riPtr; /* The info we know about the conversation. */ |
50 |
HCONV hConv; /* The DDE handle for this conversation. */ |
51 |
Tcl_Obj *returnPackagePtr; /* The result package for this conversation. */ |
52 |
} Conversation; |
53 |
|
54 |
typedef struct ThreadSpecificData { |
55 |
Conversation *currentConversations; |
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/* A list of conversations currently |
57 |
* being processed. */ |
58 |
RegisteredInterp *interpListPtr; |
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/* List of all interpreters registered |
60 |
* in the current process. */ |
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} ThreadSpecificData; |
62 |
static Tcl_ThreadDataKey dataKey; |
63 |
|
64 |
/* |
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* The following variables cannot be placed in thread-local storage. |
66 |
* The Mutex ddeMutex guards access to the ddeInstance. |
67 |
*/ |
68 |
static HSZ ddeServiceGlobal = 0; |
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static DWORD ddeInstance; /* The application instance handle given |
70 |
* to us by DdeInitialize. */ |
71 |
static int ddeIsServer = 0; |
72 |
|
73 |
#define TCL_DDE_VERSION "1.1" |
74 |
#define TCL_DDE_PACKAGE_NAME "dde" |
75 |
#define TCL_DDE_SERVICE_NAME "TclEval" |
76 |
|
77 |
TCL_DECLARE_MUTEX(ddeMutex) |
78 |
|
79 |
/* |
80 |
* Forward declarations for procedures defined later in this file. |
81 |
*/ |
82 |
|
83 |
static void DdeExitProc _ANSI_ARGS_((ClientData clientData)); |
84 |
static void DeleteProc _ANSI_ARGS_((ClientData clientData)); |
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static Tcl_Obj * ExecuteRemoteObject _ANSI_ARGS_(( |
86 |
RegisteredInterp *riPtr, |
87 |
Tcl_Obj *ddeObjectPtr)); |
88 |
static int MakeDdeConnection _ANSI_ARGS_((Tcl_Interp *interp, |
89 |
char *name, HCONV *ddeConvPtr)); |
90 |
static HDDEDATA CALLBACK DdeServerProc _ANSI_ARGS_((UINT uType, |
91 |
UINT uFmt, HCONV hConv, HSZ ddeTopic, |
92 |
HSZ ddeItem, HDDEDATA hData, DWORD dwData1, |
93 |
DWORD dwData2)); |
94 |
static void SetDdeError _ANSI_ARGS_((Tcl_Interp *interp)); |
95 |
int Tcl_DdeObjCmd(ClientData clientData, /* Used only for deletion */ |
96 |
Tcl_Interp *interp, /* The interp we are sending from */ |
97 |
int objc, /* Number of arguments */ |
98 |
Tcl_Obj *CONST objv[]); /* The arguments */ |
99 |
|
100 |
EXTERN int Dde_Init(Tcl_Interp *interp); |
101 |
|
102 |
/* |
103 |
*---------------------------------------------------------------------- |
104 |
* |
105 |
* Dde_Init -- |
106 |
* |
107 |
* This procedure initializes the dde command. |
108 |
* |
109 |
* Results: |
110 |
* A standard Tcl result. |
111 |
* |
112 |
* Side effects: |
113 |
* None. |
114 |
* |
115 |
*---------------------------------------------------------------------- |
116 |
*/ |
117 |
|
118 |
int |
119 |
Dde_Init( |
120 |
Tcl_Interp *interp) |
121 |
{ |
122 |
ThreadSpecificData *tsdPtr; |
123 |
|
124 |
if (!Tcl_InitStubs(interp, "8.0", 0)) { |
125 |
return TCL_ERROR; |
126 |
} |
127 |
|
128 |
Tcl_CreateObjCommand(interp, "dde", Tcl_DdeObjCmd, NULL, NULL); |
129 |
|
130 |
tsdPtr = (ThreadSpecificData *) |
131 |
Tcl_GetThreadData((Tcl_ThreadDataKey *) &dataKey, sizeof(ThreadSpecificData)); |
132 |
|
133 |
if (tsdPtr == NULL) { |
134 |
tsdPtr = TCL_TSD_INIT(&dataKey); |
135 |
tsdPtr->currentConversations = NULL; |
136 |
tsdPtr->interpListPtr = NULL; |
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} |
138 |
Tcl_CreateExitHandler(DdeExitProc, NULL); |
139 |
|
140 |
return Tcl_PkgProvide(interp, TCL_DDE_PACKAGE_NAME, TCL_DDE_VERSION); |
141 |
} |
142 |
|
143 |
|
144 |
/* |
145 |
*---------------------------------------------------------------------- |
146 |
* |
147 |
* Initialize -- |
148 |
* |
149 |
* Initialize the global DDE instance. |
150 |
* |
151 |
* Results: |
152 |
* None. |
153 |
* |
154 |
* Side effects: |
155 |
* Registers the DDE server proc. |
156 |
* |
157 |
*---------------------------------------------------------------------- |
158 |
*/ |
159 |
|
160 |
static void |
161 |
Initialize(void) |
162 |
{ |
163 |
int nameFound = 0; |
164 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); |
165 |
|
166 |
/* |
167 |
* See if the application is already registered; if so, remove its |
168 |
* current name from the registry. The deletion of the command |
169 |
* will take care of disposing of this entry. |
170 |
*/ |
171 |
|
172 |
if (tsdPtr->interpListPtr != NULL) { |
173 |
nameFound = 1; |
174 |
} |
175 |
|
176 |
/* |
177 |
* Make sure that the DDE server is there. This is done only once, |
178 |
* add an exit handler tear it down. |
179 |
*/ |
180 |
|
181 |
if (ddeInstance == 0) { |
182 |
Tcl_MutexLock(&ddeMutex); |
183 |
if (ddeInstance == 0) { |
184 |
if (DdeInitialize(&ddeInstance, DdeServerProc, |
185 |
CBF_SKIP_REGISTRATIONS |
186 |
| CBF_SKIP_UNREGISTRATIONS |
187 |
| CBF_FAIL_POKES, 0) |
188 |
!= DMLERR_NO_ERROR) { |
189 |
ddeInstance = 0; |
190 |
} |
191 |
} |
192 |
Tcl_MutexUnlock(&ddeMutex); |
193 |
} |
194 |
if ((ddeServiceGlobal == 0) && (nameFound != 0)) { |
195 |
Tcl_MutexLock(&ddeMutex); |
196 |
if ((ddeServiceGlobal == 0) && (nameFound != 0)) { |
197 |
ddeIsServer = 1; |
198 |
Tcl_CreateExitHandler(DdeExitProc, NULL); |
199 |
ddeServiceGlobal = DdeCreateStringHandle(ddeInstance, \ |
200 |
TCL_DDE_SERVICE_NAME, 0); |
201 |
DdeNameService(ddeInstance, ddeServiceGlobal, 0L, DNS_REGISTER); |
202 |
} else { |
203 |
ddeIsServer = 0; |
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} |
205 |
Tcl_MutexUnlock(&ddeMutex); |
206 |
} |
207 |
} |
208 |
|
209 |
/* |
210 |
*-------------------------------------------------------------- |
211 |
* |
212 |
* DdeSetServerName -- |
213 |
* |
214 |
* This procedure is called to associate an ASCII name with a Dde |
215 |
* server. If the interpreter has already been named, the |
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* name replaces the old one. |
217 |
* |
218 |
* Results: |
219 |
* The return value is the name actually given to the interp. |
220 |
* This will normally be the same as name, but if name was already |
221 |
* in use for a Dde Server then a name of the form "name #2" will |
222 |
* be chosen, with a high enough number to make the name unique. |
223 |
* |
224 |
* Side effects: |
225 |
* Registration info is saved, thereby allowing the "send" command |
226 |
* to be used later to invoke commands in the application. In |
227 |
* addition, the "send" command is created in the application's |
228 |
* interpreter. The registration will be removed automatically |
229 |
* if the interpreter is deleted or the "send" command is removed. |
230 |
* |
231 |
*-------------------------------------------------------------- |
232 |
*/ |
233 |
|
234 |
static char * |
235 |
DdeSetServerName( |
236 |
Tcl_Interp *interp, |
237 |
char *name /* The name that will be used to |
238 |
* refer to the interpreter in later |
239 |
* "send" commands. Must be globally |
240 |
* unique. */ |
241 |
) |
242 |
{ |
243 |
int suffix, offset; |
244 |
RegisteredInterp *riPtr, *prevPtr; |
245 |
Tcl_DString dString; |
246 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); |
247 |
|
248 |
/* |
249 |
* See if the application is already registered; if so, remove its |
250 |
* current name from the registry. The deletion of the command |
251 |
* will take care of disposing of this entry. |
252 |
*/ |
253 |
|
254 |
for (riPtr = tsdPtr->interpListPtr, prevPtr = NULL; riPtr != NULL; |
255 |
prevPtr = riPtr, riPtr = riPtr->nextPtr) { |
256 |
if (riPtr->interp == interp) { |
257 |
if (name != NULL) { |
258 |
if (prevPtr == NULL) { |
259 |
tsdPtr->interpListPtr = tsdPtr->interpListPtr->nextPtr; |
260 |
} else { |
261 |
prevPtr->nextPtr = riPtr->nextPtr; |
262 |
} |
263 |
break; |
264 |
} else { |
265 |
/* |
266 |
* the name was NULL, so the caller is asking for |
267 |
* the name of the current interp. |
268 |
*/ |
269 |
|
270 |
return riPtr->name; |
271 |
} |
272 |
} |
273 |
} |
274 |
|
275 |
if (name == NULL) { |
276 |
/* |
277 |
* the name was NULL, so the caller is asking for |
278 |
* the name of the current interp, but it doesn't |
279 |
* have a name. |
280 |
*/ |
281 |
|
282 |
return ""; |
283 |
} |
284 |
|
285 |
/* |
286 |
* Pick a name to use for the application. Use "name" if it's not |
287 |
* already in use. Otherwise add a suffix such as " #2", trying |
288 |
* larger and larger numbers until we eventually find one that is |
289 |
* unique. |
290 |
*/ |
291 |
|
292 |
suffix = 1; |
293 |
offset = 0; |
294 |
Tcl_DStringInit(&dString); |
295 |
|
296 |
/* |
297 |
* We have found a unique name. Now add it to the registry. |
298 |
*/ |
299 |
|
300 |
riPtr = (RegisteredInterp *) ckalloc(sizeof(RegisteredInterp)); |
301 |
riPtr->interp = interp; |
302 |
riPtr->name = ckalloc(strlen(name) + 1); |
303 |
riPtr->nextPtr = tsdPtr->interpListPtr; |
304 |
tsdPtr->interpListPtr = riPtr; |
305 |
strcpy(riPtr->name, name); |
306 |
|
307 |
Tcl_CreateObjCommand(interp, "dde", Tcl_DdeObjCmd, |
308 |
(ClientData) riPtr, DeleteProc); |
309 |
if (Tcl_IsSafe(interp)) { |
310 |
Tcl_HideCommand(interp, "dde", "dde"); |
311 |
} |
312 |
Tcl_DStringFree(&dString); |
313 |
|
314 |
/* |
315 |
* re-initialize with the new name |
316 |
*/ |
317 |
Initialize(); |
318 |
|
319 |
return riPtr->name; |
320 |
} |
321 |
|
322 |
/* |
323 |
*-------------------------------------------------------------- |
324 |
* |
325 |
* DeleteProc |
326 |
* |
327 |
* This procedure is called when the command "dde" is destroyed. |
328 |
* |
329 |
* Results: |
330 |
* none |
331 |
* |
332 |
* Side effects: |
333 |
* The interpreter given by riPtr is unregistered. |
334 |
* |
335 |
*-------------------------------------------------------------- |
336 |
*/ |
337 |
|
338 |
static void |
339 |
DeleteProc(clientData) |
340 |
ClientData clientData; /* The interp we are deleting passed |
341 |
* as ClientData. */ |
342 |
{ |
343 |
RegisteredInterp *riPtr = (RegisteredInterp *) clientData; |
344 |
RegisteredInterp *searchPtr, *prevPtr; |
345 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); |
346 |
|
347 |
for (searchPtr = tsdPtr->interpListPtr, prevPtr = NULL; |
348 |
(searchPtr != NULL) && (searchPtr != riPtr); |
349 |
prevPtr = searchPtr, searchPtr = searchPtr->nextPtr) { |
350 |
/* |
351 |
* Empty loop body. |
352 |
*/ |
353 |
} |
354 |
|
355 |
if (searchPtr != NULL) { |
356 |
if (prevPtr == NULL) { |
357 |
tsdPtr->interpListPtr = tsdPtr->interpListPtr->nextPtr; |
358 |
} else { |
359 |
prevPtr->nextPtr = searchPtr->nextPtr; |
360 |
} |
361 |
} |
362 |
ckfree(riPtr->name); |
363 |
Tcl_EventuallyFree(clientData, TCL_DYNAMIC); |
364 |
} |
365 |
|
366 |
/* |
367 |
*-------------------------------------------------------------- |
368 |
* |
369 |
* ExecuteRemoteObject -- |
370 |
* |
371 |
* Takes the package delivered by DDE and executes it in |
372 |
* the server's interpreter. |
373 |
* |
374 |
* Results: |
375 |
* A list Tcl_Obj * that describes what happened. The first |
376 |
* element is the numerical return code (TCL_ERROR, etc.). |
377 |
* The second element is the result of the script. If the |
378 |
* return result was TCL_ERROR, then the third element |
379 |
* will be the value of the global "errorCode", and the |
380 |
* fourth will be the value of the global "errorInfo". |
381 |
* The return result will have a refCount of 0. |
382 |
* |
383 |
* Side effects: |
384 |
* A Tcl script is run, which can cause all kinds of other |
385 |
* things to happen. |
386 |
* |
387 |
*-------------------------------------------------------------- |
388 |
*/ |
389 |
|
390 |
static Tcl_Obj * |
391 |
ExecuteRemoteObject( |
392 |
RegisteredInterp *riPtr, /* Info about this server. */ |
393 |
Tcl_Obj *ddeObjectPtr) /* The object to execute. */ |
394 |
{ |
395 |
Tcl_Obj *errorObjPtr; |
396 |
Tcl_Obj *returnPackagePtr; |
397 |
int result; |
398 |
|
399 |
result = Tcl_EvalObjEx(riPtr->interp, ddeObjectPtr, TCL_EVAL_GLOBAL); |
400 |
returnPackagePtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL); |
401 |
Tcl_ListObjAppendElement(NULL, returnPackagePtr, |
402 |
Tcl_NewIntObj(result)); |
403 |
Tcl_ListObjAppendElement(NULL, returnPackagePtr, |
404 |
Tcl_GetObjResult(riPtr->interp)); |
405 |
if (result == TCL_ERROR) { |
406 |
errorObjPtr = Tcl_GetVar2Ex(riPtr->interp, "errorCode", NULL, |
407 |
TCL_GLOBAL_ONLY); |
408 |
Tcl_ListObjAppendElement(NULL, returnPackagePtr, errorObjPtr); |
409 |
errorObjPtr = Tcl_GetVar2Ex(riPtr->interp, "errorInfo", NULL, |
410 |
TCL_GLOBAL_ONLY); |
411 |
Tcl_ListObjAppendElement(NULL, returnPackagePtr, errorObjPtr); |
412 |
} |
413 |
|
414 |
return returnPackagePtr; |
415 |
} |
416 |
|
417 |
/* |
418 |
*-------------------------------------------------------------- |
419 |
* |
420 |
* DdeServerProc -- |
421 |
* |
422 |
* Handles all transactions for this server. Can handle |
423 |
* execute, request, and connect protocols. Dde will |
424 |
* call this routine when a client attempts to run a dde |
425 |
* command using this server. |
426 |
* |
427 |
* Results: |
428 |
* A DDE Handle with the result of the dde command. |
429 |
* |
430 |
* Side effects: |
431 |
* Depending on which command is executed, arbitrary |
432 |
* Tcl scripts can be run. |
433 |
* |
434 |
*-------------------------------------------------------------- |
435 |
*/ |
436 |
|
437 |
static HDDEDATA CALLBACK |
438 |
DdeServerProc ( |
439 |
UINT uType, /* The type of DDE transaction we |
440 |
* are performing. */ |
441 |
UINT uFmt, /* The format that data is sent or |
442 |
* received. */ |
443 |
HCONV hConv, /* The conversation associated with the |
444 |
* current transaction. */ |
445 |
HSZ ddeTopic, /* A string handle. Transaction-type |
446 |
* dependent. */ |
447 |
HSZ ddeItem, /* A string handle. Transaction-type |
448 |
* dependent. */ |
449 |
HDDEDATA hData, /* DDE data. Transaction-type dependent. */ |
450 |
DWORD dwData1, /* Transaction-dependent data. */ |
451 |
DWORD dwData2) /* Transaction-dependent data. */ |
452 |
{ |
453 |
Tcl_DString dString; |
454 |
int len; |
455 |
char *utilString; |
456 |
Tcl_Obj *ddeObjectPtr; |
457 |
HDDEDATA ddeReturn = NULL; |
458 |
RegisteredInterp *riPtr; |
459 |
Conversation *convPtr, *prevConvPtr; |
460 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); |
461 |
|
462 |
switch(uType) { |
463 |
case XTYP_CONNECT: |
464 |
|
465 |
/* |
466 |
* Dde is trying to initialize a conversation with us. Check |
467 |
* and make sure we have a valid topic. |
468 |
*/ |
469 |
|
470 |
len = DdeQueryString(ddeInstance, ddeTopic, NULL, 0, 0); |
471 |
Tcl_DStringInit(&dString); |
472 |
Tcl_DStringSetLength(&dString, len); |
473 |
utilString = Tcl_DStringValue(&dString); |
474 |
DdeQueryString(ddeInstance, ddeTopic, utilString, len + 1, |
475 |
CP_WINANSI); |
476 |
|
477 |
for (riPtr = tsdPtr->interpListPtr; riPtr != NULL; |
478 |
riPtr = riPtr->nextPtr) { |
479 |
if (stricmp(utilString, riPtr->name) == 0) { |
480 |
Tcl_DStringFree(&dString); |
481 |
return (HDDEDATA) TRUE; |
482 |
} |
483 |
} |
484 |
|
485 |
Tcl_DStringFree(&dString); |
486 |
return (HDDEDATA) FALSE; |
487 |
|
488 |
case XTYP_CONNECT_CONFIRM: |
489 |
|
490 |
/* |
491 |
* Dde has decided that we can connect, so it gives us a |
492 |
* conversation handle. We need to keep track of it |
493 |
* so we know which execution result to return in an |
494 |
* XTYP_REQUEST. |
495 |
*/ |
496 |
|
497 |
len = DdeQueryString(ddeInstance, ddeTopic, NULL, 0, 0); |
498 |
Tcl_DStringInit(&dString); |
499 |
Tcl_DStringSetLength(&dString, len); |
500 |
utilString = Tcl_DStringValue(&dString); |
501 |
DdeQueryString(ddeInstance, ddeTopic, utilString, len + 1, |
502 |
CP_WINANSI); |
503 |
for (riPtr = tsdPtr->interpListPtr; riPtr != NULL; |
504 |
riPtr = riPtr->nextPtr) { |
505 |
if (stricmp(riPtr->name, utilString) == 0) { |
506 |
convPtr = (Conversation *) ckalloc(sizeof(Conversation)); |
507 |
convPtr->nextPtr = tsdPtr->currentConversations; |
508 |
convPtr->returnPackagePtr = NULL; |
509 |
convPtr->hConv = hConv; |
510 |
convPtr->riPtr = riPtr; |
511 |
tsdPtr->currentConversations = convPtr; |
512 |
break; |
513 |
} |
514 |
} |
515 |
Tcl_DStringFree(&dString); |
516 |
return (HDDEDATA) TRUE; |
517 |
|
518 |
case XTYP_DISCONNECT: |
519 |
|
520 |
/* |
521 |
* The client has disconnected from our server. Forget this |
522 |
* conversation. |
523 |
*/ |
524 |
|
525 |
for (convPtr = tsdPtr->currentConversations, prevConvPtr = NULL; |
526 |
convPtr != NULL; |
527 |
prevConvPtr = convPtr, convPtr = convPtr->nextPtr) { |
528 |
if (hConv == convPtr->hConv) { |
529 |
if (prevConvPtr == NULL) { |
530 |
tsdPtr->currentConversations = convPtr->nextPtr; |
531 |
} else { |
532 |
prevConvPtr->nextPtr = convPtr->nextPtr; |
533 |
} |
534 |
if (convPtr->returnPackagePtr != NULL) { |
535 |
Tcl_DecrRefCount(convPtr->returnPackagePtr); |
536 |
} |
537 |
ckfree((char *) convPtr); |
538 |
break; |
539 |
} |
540 |
} |
541 |
return (HDDEDATA) TRUE; |
542 |
|
543 |
case XTYP_REQUEST: |
544 |
|
545 |
/* |
546 |
* This could be either a request for a value of a Tcl variable, |
547 |
* or it could be the send command requesting the results of the |
548 |
* last execute. |
549 |
*/ |
550 |
|
551 |
if (uFmt != CF_TEXT) { |
552 |
return (HDDEDATA) FALSE; |
553 |
} |
554 |
|
555 |
ddeReturn = (HDDEDATA) FALSE; |
556 |
for (convPtr = tsdPtr->currentConversations; (convPtr != NULL) |
557 |
&& (convPtr->hConv != hConv); convPtr = convPtr->nextPtr) { |
558 |
/* |
559 |
* Empty loop body. |
560 |
*/ |
561 |
} |
562 |
|
563 |
if (convPtr != NULL) { |
564 |
char *returnString; |
565 |
|
566 |
len = DdeQueryString(ddeInstance, ddeItem, NULL, 0, |
567 |
CP_WINANSI); |
568 |
Tcl_DStringInit(&dString); |
569 |
Tcl_DStringSetLength(&dString, len); |
570 |
utilString = Tcl_DStringValue(&dString); |
571 |
DdeQueryString(ddeInstance, ddeItem, utilString, |
572 |
len + 1, CP_WINANSI); |
573 |
if (stricmp(utilString, "$TCLEVAL$EXECUTE$RESULT") == 0) { |
574 |
returnString = |
575 |
Tcl_GetStringFromObj(convPtr->returnPackagePtr, &len); |
576 |
ddeReturn = DdeCreateDataHandle(ddeInstance, |
577 |
returnString, len+1, 0, ddeItem, CF_TEXT, |
578 |
0); |
579 |
} else { |
580 |
Tcl_Obj *variableObjPtr = Tcl_GetVar2Ex( |
581 |
convPtr->riPtr->interp, utilString, NULL, |
582 |
TCL_GLOBAL_ONLY); |
583 |
if (variableObjPtr != NULL) { |
584 |
returnString = Tcl_GetStringFromObj(variableObjPtr, |
585 |
&len); |
586 |
ddeReturn = DdeCreateDataHandle(ddeInstance, |
587 |
returnString, len+1, 0, ddeItem, CF_TEXT, 0); |
588 |
} else { |
589 |
ddeReturn = NULL; |
590 |
} |
591 |
} |
592 |
Tcl_DStringFree(&dString); |
593 |
} |
594 |
return ddeReturn; |
595 |
|
596 |
case XTYP_EXECUTE: { |
597 |
|
598 |
/* |
599 |
* Execute this script. The results will be saved into |
600 |
* a list object which will be retreived later. See |
601 |
* ExecuteRemoteObject. |
602 |
*/ |
603 |
|
604 |
Tcl_Obj *returnPackagePtr; |
605 |
|
606 |
for (convPtr = tsdPtr->currentConversations; (convPtr != NULL) |
607 |
&& (convPtr->hConv != hConv); convPtr = convPtr->nextPtr) { |
608 |
/* |
609 |
* Empty loop body. |
610 |
*/ |
611 |
|
612 |
} |
613 |
|
614 |
if (convPtr == NULL) { |
615 |
return (HDDEDATA) DDE_FNOTPROCESSED; |
616 |
} |
617 |
|
618 |
utilString = (char *) DdeAccessData(hData, &len); |
619 |
ddeObjectPtr = Tcl_NewStringObj(utilString, -1); |
620 |
Tcl_IncrRefCount(ddeObjectPtr); |
621 |
DdeUnaccessData(hData); |
622 |
if (convPtr->returnPackagePtr != NULL) { |
623 |
Tcl_DecrRefCount(convPtr->returnPackagePtr); |
624 |
} |
625 |
convPtr->returnPackagePtr = NULL; |
626 |
returnPackagePtr = |
627 |
ExecuteRemoteObject(convPtr->riPtr, ddeObjectPtr); |
628 |
for (convPtr = tsdPtr->currentConversations; (convPtr != NULL) |
629 |
&& (convPtr->hConv != hConv); convPtr = convPtr->nextPtr) { |
630 |
/* |
631 |
* Empty loop body. |
632 |
*/ |
633 |
|
634 |
} |
635 |
if (convPtr != NULL) { |
636 |
Tcl_IncrRefCount(returnPackagePtr); |
637 |
convPtr->returnPackagePtr = returnPackagePtr; |
638 |
} |
639 |
Tcl_DecrRefCount(ddeObjectPtr); |
640 |
if (returnPackagePtr == NULL) { |
641 |
return (HDDEDATA) DDE_FNOTPROCESSED; |
642 |
} else { |
643 |
return (HDDEDATA) DDE_FACK; |
644 |
} |
645 |
} |
646 |
|
647 |
case XTYP_WILDCONNECT: { |
648 |
|
649 |
/* |
650 |
* Dde wants a list of services and topics that we support. |
651 |
*/ |
652 |
|
653 |
HSZPAIR *returnPtr; |
654 |
int i; |
655 |
int numItems; |
656 |
|
657 |
for (i = 0, riPtr = tsdPtr->interpListPtr; riPtr != NULL; |
658 |
i++, riPtr = riPtr->nextPtr) { |
659 |
/* |
660 |
* Empty loop body. |
661 |
*/ |
662 |
|
663 |
} |
664 |
|
665 |
numItems = i; |
666 |
ddeReturn = DdeCreateDataHandle(ddeInstance, NULL, |
667 |
(numItems + 1) * sizeof(HSZPAIR), 0, 0, 0, 0); |
668 |
returnPtr = (HSZPAIR *) DdeAccessData(ddeReturn, &len); |
669 |
for (i = 0, riPtr = tsdPtr->interpListPtr; i < numItems; |
670 |
i++, riPtr = riPtr->nextPtr) { |
671 |
returnPtr[i].hszSvc = DdeCreateStringHandle( |
672 |
ddeInstance, "TclEval", CP_WINANSI); |
673 |
returnPtr[i].hszTopic = DdeCreateStringHandle( |
674 |
ddeInstance, riPtr->name, CP_WINANSI); |
675 |
} |
676 |
returnPtr[i].hszSvc = NULL; |
677 |
returnPtr[i].hszTopic = NULL; |
678 |
DdeUnaccessData(ddeReturn); |
679 |
return ddeReturn; |
680 |
} |
681 |
|
682 |
} |
683 |
return NULL; |
684 |
} |
685 |
|
686 |
/* |
687 |
*-------------------------------------------------------------- |
688 |
* |
689 |
* DdeExitProc -- |
690 |
* |
691 |
* Gets rid of our DDE server when we go away. |
692 |
* |
693 |
* Results: |
694 |
* None. |
695 |
* |
696 |
* Side effects: |
697 |
* The DDE server is deleted. |
698 |
* |
699 |
*-------------------------------------------------------------- |
700 |
*/ |
701 |
|
702 |
static void |
703 |
DdeExitProc( |
704 |
ClientData clientData) /* Not used in this handler. */ |
705 |
{ |
706 |
DdeNameService(ddeInstance, NULL, 0, DNS_UNREGISTER); |
707 |
DdeUninitialize(ddeInstance); |
708 |
ddeInstance = 0; |
709 |
} |
710 |
|
711 |
/* |
712 |
*-------------------------------------------------------------- |
713 |
* |
714 |
* MakeDdeConnection -- |
715 |
* |
716 |
* This procedure is a utility used to connect to a DDE |
717 |
* server when given a server name and a topic name. |
718 |
* |
719 |
* Results: |
720 |
* A standard Tcl result. |
721 |
* |
722 |
* |
723 |
* Side effects: |
724 |
* Passes back a conversation through ddeConvPtr |
725 |
* |
726 |
*-------------------------------------------------------------- |
727 |
*/ |
728 |
|
729 |
static int |
730 |
MakeDdeConnection( |
731 |
Tcl_Interp *interp, /* Used to report errors. */ |
732 |
char *name, /* The connection to use. */ |
733 |
HCONV *ddeConvPtr) |
734 |
{ |
735 |
HSZ ddeTopic, ddeService; |
736 |
HCONV ddeConv; |
737 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); |
738 |
|
739 |
ddeService = DdeCreateStringHandle(ddeInstance, "TclEval", 0); |
740 |
ddeTopic = DdeCreateStringHandle(ddeInstance, name, 0); |
741 |
|
742 |
ddeConv = DdeConnect(ddeInstance, ddeService, ddeTopic, NULL); |
743 |
DdeFreeStringHandle(ddeInstance, ddeService); |
744 |
DdeFreeStringHandle(ddeInstance, ddeTopic); |
745 |
|
746 |
if (ddeConv == (HCONV) NULL) { |
747 |
if (interp != NULL) { |
748 |
Tcl_AppendResult(interp, "no registered server named \"", |
749 |
name, "\"", (char *) NULL); |
750 |
} |
751 |
return TCL_ERROR; |
752 |
} |
753 |
|
754 |
*ddeConvPtr = ddeConv; |
755 |
return TCL_OK; |
756 |
} |
757 |
|
758 |
/* |
759 |
*-------------------------------------------------------------- |
760 |
* |
761 |
* SetDdeError -- |
762 |
* |
763 |
* Sets the interp result to a cogent error message |
764 |
* describing the last DDE error. |
765 |
* |
766 |
* Results: |
767 |
* None. |
768 |
* |
769 |
* |
770 |
* Side effects: |
771 |
* The interp's result object is changed. |
772 |
* |
773 |
*-------------------------------------------------------------- |
774 |
*/ |
775 |
|
776 |
static void |
777 |
SetDdeError( |
778 |
Tcl_Interp *interp) /* The interp to put the message in.*/ |
779 |
{ |
780 |
Tcl_Obj *resultPtr = Tcl_GetObjResult(interp); |
781 |
int err; |
782 |
|
783 |
err = DdeGetLastError(ddeInstance); |
784 |
switch (err) { |
785 |
case DMLERR_DATAACKTIMEOUT: |
786 |
case DMLERR_EXECACKTIMEOUT: |
787 |
case DMLERR_POKEACKTIMEOUT: |
788 |
Tcl_SetStringObj(resultPtr, |
789 |
"remote interpreter did not respond", -1); |
790 |
break; |
791 |
|
792 |
case DMLERR_BUSY: |
793 |
Tcl_SetStringObj(resultPtr, "remote server is busy", -1); |
794 |
break; |
795 |
|
796 |
case DMLERR_NOTPROCESSED: |
797 |
Tcl_SetStringObj(resultPtr, |
798 |
"remote server cannot handle this command", -1); |
799 |
break; |
800 |
|
801 |
default: |
802 |
Tcl_SetStringObj(resultPtr, "dde command failed", -1); |
803 |
} |
804 |
} |
805 |
|
806 |
/* |
807 |
*-------------------------------------------------------------- |
808 |
* |
809 |
* Tcl_DdeObjCmd -- |
810 |
* |
811 |
* This procedure is invoked to process the "dde" Tcl command. |
812 |
* See the user documentation for details on what it does. |
813 |
* |
814 |
* Results: |
815 |
* A standard Tcl result. |
816 |
* |
817 |
* Side effects: |
818 |
* See the user documentation. |
819 |
* |
820 |
*-------------------------------------------------------------- |
821 |
*/ |
822 |
|
823 |
int |
824 |
Tcl_DdeObjCmd( |
825 |
ClientData clientData, /* Used only for deletion */ |
826 |
Tcl_Interp *interp, /* The interp we are sending from */ |
827 |
int objc, /* Number of arguments */ |
828 |
Tcl_Obj *CONST objv[]) /* The arguments */ |
829 |
{ |
830 |
enum { |
831 |
DDE_SERVERNAME, |
832 |
DDE_EXECUTE, |
833 |
DDE_POKE, |
834 |
DDE_REQUEST, |
835 |
DDE_SERVICES, |
836 |
DDE_EVAL |
837 |
}; |
838 |
|
839 |
static char *ddeCommands[] = {"servername", "execute", "poke", |
840 |
"request", "services", "eval", |
841 |
(char *) NULL}; |
842 |
static char *ddeOptions[] = {"-async", (char *) NULL}; |
843 |
int index, argIndex; |
844 |
int async = 0; |
845 |
int result = TCL_OK; |
846 |
HSZ ddeService = NULL; |
847 |
HSZ ddeTopic = NULL; |
848 |
HSZ ddeItem = NULL; |
849 |
HDDEDATA ddeData = NULL; |
850 |
HDDEDATA ddeItemData = NULL; |
851 |
HCONV hConv = NULL; |
852 |
HSZ ddeCookie = 0; |
853 |
char *serviceName, *topicName, *itemString, *dataString; |
854 |
char *string; |
855 |
int firstArg, length, dataLength; |
856 |
DWORD ddeResult; |
857 |
HDDEDATA ddeReturn; |
858 |
RegisteredInterp *riPtr; |
859 |
Tcl_Interp *sendInterp; |
860 |
Tcl_Obj *objPtr; |
861 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); |
862 |
|
863 |
/* |
864 |
* Initialize DDE server/client |
865 |
*/ |
866 |
|
867 |
if (objc < 2) { |
868 |
Tcl_WrongNumArgs(interp, 1, objv, |
869 |
"?-async? serviceName topicName value"); |
870 |
return TCL_ERROR; |
871 |
} |
872 |
|
873 |
if (Tcl_GetIndexFromObj(interp, objv[1], ddeCommands, "command", 0, |
874 |
&index) != TCL_OK) { |
875 |
return TCL_ERROR; |
876 |
} |
877 |
|
878 |
switch (index) { |
879 |
case DDE_SERVERNAME: |
880 |
if ((objc != 3) && (objc != 2)) { |
881 |
Tcl_WrongNumArgs(interp, 1, objv, |
882 |
"servername ?serverName?"); |
883 |
return TCL_ERROR; |
884 |
} |
885 |
firstArg = (objc - 1); |
886 |
break; |
887 |
case DDE_EXECUTE: |
888 |
if ((objc < 5) || (objc > 6)) { |
889 |
Tcl_WrongNumArgs(interp, 1, objv, |
890 |
"execute ?-async? serviceName topicName value"); |
891 |
return TCL_ERROR; |
892 |
} |
893 |
if (Tcl_GetIndexFromObj(NULL, objv[2], ddeOptions, "option", 0, |
894 |
&argIndex) != TCL_OK) { |
895 |
if (objc != 5) { |
896 |
Tcl_WrongNumArgs(interp, 1, objv, |
897 |
"execute ?-async? serviceName topicName value"); |
898 |
return TCL_ERROR; |
899 |
} |
900 |
async = 0; |
901 |
firstArg = 2; |
902 |
} else { |
903 |
if (objc != 6) { |
904 |
Tcl_WrongNumArgs(interp, 1, objv, |
905 |
"execute ?-async? serviceName topicName value"); |
906 |
return TCL_ERROR; |
907 |
} |
908 |
async = 1; |
909 |
firstArg = 3; |
910 |
} |
911 |
break; |
912 |
case DDE_POKE: |
913 |
if (objc != 6) { |
914 |
Tcl_WrongNumArgs(interp, 1, objv, |
915 |
"poke serviceName topicName item value"); |
916 |
return TCL_ERROR; |
917 |
} |
918 |
firstArg = 2; |
919 |
break; |
920 |
case DDE_REQUEST: |
921 |
if (objc != 5) { |
922 |
Tcl_WrongNumArgs(interp, 1, objv, |
923 |
"request serviceName topicName value"); |
924 |
return TCL_ERROR; |
925 |
} |
926 |
firstArg = 2; |
927 |
break; |
928 |
case DDE_SERVICES: |
929 |
if (objc != 4) { |
930 |
Tcl_WrongNumArgs(interp, 1, objv, |
931 |
"services serviceName topicName"); |
932 |
return TCL_ERROR; |
933 |
} |
934 |
firstArg = 2; |
935 |
break; |
936 |
case DDE_EVAL: |
937 |
if (objc < 4) { |
938 |
Tcl_WrongNumArgs(interp, 1, objv, |
939 |
"eval ?-async? serviceName args"); |
940 |
return TCL_ERROR; |
941 |
} |
942 |
if (Tcl_GetIndexFromObj(NULL, objv[2], ddeOptions, "option", 0, |
943 |
&argIndex) != TCL_OK) { |
944 |
if (objc < 4) { |
945 |
Tcl_WrongNumArgs(interp, 1, objv, |
946 |
"eval ?-async? serviceName args"); |
947 |
return TCL_ERROR; |
948 |
} |
949 |
async = 0; |
950 |
firstArg = 2; |
951 |
} else { |
952 |
if (objc < 5) { |
953 |
Tcl_WrongNumArgs(interp, 1, objv, |
954 |
"eval ?-async? serviceName args"); |
955 |
return TCL_ERROR; |
956 |
} |
957 |
async = 1; |
958 |
firstArg = 3; |
959 |
} |
960 |
break; |
961 |
} |
962 |
|
963 |
Initialize(); |
964 |
|
965 |
if (firstArg != 1) { |
966 |
serviceName = Tcl_GetStringFromObj(objv[firstArg], &length); |
967 |
} else { |
968 |
length = 0; |
969 |
} |
970 |
|
971 |
if (length == 0) { |
972 |
serviceName = NULL; |
973 |
} else if ((index != DDE_SERVERNAME) && (index != DDE_EVAL)) { |
974 |
ddeService = DdeCreateStringHandle(ddeInstance, serviceName, |
975 |
CP_WINANSI); |
976 |
} |
977 |
|
978 |
if ((index != DDE_SERVERNAME) &&(index != DDE_EVAL)) { |
979 |
topicName = Tcl_GetStringFromObj(objv[firstArg + 1], &length); |
980 |
if (length == 0) { |
981 |
topicName = NULL; |
982 |
} else { |
983 |
ddeTopic = DdeCreateStringHandle(ddeInstance, |
984 |
topicName, CP_WINANSI); |
985 |
} |
986 |
} |
987 |
|
988 |
switch (index) { |
989 |
case DDE_SERVERNAME: { |
990 |
serviceName = DdeSetServerName(interp, serviceName); |
991 |
if (serviceName != NULL) { |
992 |
Tcl_SetStringObj(Tcl_GetObjResult(interp), |
993 |
serviceName, -1); |
994 |
} else { |
995 |
Tcl_ResetResult(interp); |
996 |
} |
997 |
break; |
998 |
} |
999 |
case DDE_EXECUTE: { |
1000 |
dataString = Tcl_GetStringFromObj(objv[firstArg + 2], &dataLength); |
1001 |
if (dataLength == 0) { |
1002 |
Tcl_SetStringObj(Tcl_GetObjResult(interp), |
1003 |
"cannot execute null data", -1); |
1004 |
result = TCL_ERROR; |
1005 |
break; |
1006 |
} |
1007 |
hConv = DdeConnect(ddeInstance, ddeService, ddeTopic, |
1008 |
NULL); |
1009 |
DdeFreeStringHandle (ddeInstance, ddeService) ; |
1010 |
DdeFreeStringHandle (ddeInstance, ddeTopic) ; |
1011 |
|
1012 |
if (hConv == NULL) { |
1013 |
SetDdeError(interp); |
1014 |
result = TCL_ERROR; |
1015 |
break; |
1016 |
} |
1017 |
|
1018 |
ddeData = DdeCreateDataHandle(ddeInstance, dataString, |
1019 |
dataLength+1, 0, 0, CF_TEXT, 0); |
1020 |
if (ddeData != NULL) { |
1021 |
if (async) { |
1022 |
DdeClientTransaction((LPBYTE) ddeData, 0xFFFFFFFF, hConv, 0, |
1023 |
CF_TEXT, XTYP_EXECUTE, TIMEOUT_ASYNC, &ddeResult); |
1024 |
DdeAbandonTransaction(ddeInstance, hConv, |
1025 |
ddeResult); |
1026 |
} else { |
1027 |
ddeReturn = DdeClientTransaction((LPBYTE) ddeData, 0xFFFFFFFF, |
1028 |
hConv, 0, CF_TEXT, XTYP_EXECUTE, 30000, NULL); |
1029 |
if (ddeReturn == 0) { |
1030 |
SetDdeError(interp); |
1031 |
result = TCL_ERROR; |
1032 |
} |
1033 |
} |
1034 |
DdeFreeDataHandle(ddeData); |
1035 |
} else { |
1036 |
SetDdeError(interp); |
1037 |
result = TCL_ERROR; |
1038 |
} |
1039 |
break; |
1040 |
} |
1041 |
case DDE_REQUEST: { |
1042 |
itemString = Tcl_GetStringFromObj(objv[firstArg + 2], &length); |
1043 |
if (length == 0) { |
1044 |
Tcl_SetStringObj(Tcl_GetObjResult(interp), |
1045 |
"cannot request value of null data", -1); |
1046 |
return TCL_ERROR; |
1047 |
} |
1048 |
hConv = DdeConnect(ddeInstance, ddeService, ddeTopic, NULL); |
1049 |
DdeFreeStringHandle (ddeInstance, ddeService) ; |
1050 |
DdeFreeStringHandle (ddeInstance, ddeTopic) ; |
1051 |
|
1052 |
if (hConv == NULL) { |
1053 |
SetDdeError(interp); |
1054 |
result = TCL_ERROR; |
1055 |
} else { |
1056 |
Tcl_Obj *returnObjPtr; |
1057 |
ddeItem = DdeCreateStringHandle(ddeInstance, |
1058 |
itemString, CP_WINANSI); |
1059 |
if (ddeItem != NULL) { |
1060 |
ddeData = DdeClientTransaction(NULL, 0, hConv, ddeItem, |
1061 |
CF_TEXT, XTYP_REQUEST, 5000, NULL); |
1062 |
if (ddeData == NULL) { |
1063 |
SetDdeError(interp); |
1064 |
result = TCL_ERROR; |
1065 |
} else { |
1066 |
dataString = DdeAccessData(ddeData, &dataLength); |
1067 |
returnObjPtr = Tcl_NewStringObj(dataString, -1); |
1068 |
DdeUnaccessData(ddeData); |
1069 |
DdeFreeDataHandle(ddeData); |
1070 |
Tcl_SetObjResult(interp, returnObjPtr); |
1071 |
} |
1072 |
} else { |
1073 |
SetDdeError(interp); |
1074 |
result = TCL_ERROR; |
1075 |
} |
1076 |
} |
1077 |
|
1078 |
break; |
1079 |
} |
1080 |
case DDE_POKE: { |
1081 |
itemString = Tcl_GetStringFromObj(objv[firstArg + 2], &length); |
1082 |
if (length == 0) { |
1083 |
Tcl_SetStringObj(Tcl_GetObjResult(interp), |
1084 |
"cannot have a null item", -1); |
1085 |
return TCL_ERROR; |
1086 |
} |
1087 |
dataString = Tcl_GetStringFromObj(objv[firstArg + 3], &length); |
1088 |
|
1089 |
hConv = DdeConnect(ddeInstance, ddeService, ddeTopic, NULL); |
1090 |
DdeFreeStringHandle (ddeInstance,ddeService) ; |
1091 |
DdeFreeStringHandle (ddeInstance, ddeTopic) ; |
1092 |
|
1093 |
if (hConv == NULL) { |
1094 |
SetDdeError(interp); |
1095 |
result = TCL_ERROR; |
1096 |
} else { |
1097 |
ddeItem = DdeCreateStringHandle(ddeInstance, itemString, \ |
1098 |
CP_WINANSI); |
1099 |
if (ddeItem != NULL) { |
1100 |
ddeData = DdeClientTransaction(dataString,length+1, \ |
1101 |
hConv, ddeItem, |
1102 |
CF_TEXT, XTYP_POKE, 5000, NULL); |
1103 |
if (ddeData == NULL) { |
1104 |
SetDdeError(interp); |
1105 |
result = TCL_ERROR; |
1106 |
} |
1107 |
} else { |
1108 |
SetDdeError(interp); |
1109 |
result = TCL_ERROR; |
1110 |
} |
1111 |
} |
1112 |
break; |
1113 |
} |
1114 |
|
1115 |
case DDE_SERVICES: { |
1116 |
HCONVLIST hConvList; |
1117 |
CONVINFO convInfo; |
1118 |
Tcl_Obj *convListObjPtr, *elementObjPtr; |
1119 |
Tcl_DString dString; |
1120 |
char *name; |
1121 |
|
1122 |
convInfo.cb = sizeof(CONVINFO); |
1123 |
hConvList = DdeConnectList(ddeInstance, ddeService, |
1124 |
ddeTopic, 0, NULL); |
1125 |
DdeFreeStringHandle (ddeInstance,ddeService) ; |
1126 |
DdeFreeStringHandle (ddeInstance, ddeTopic) ; |
1127 |
hConv = 0; |
1128 |
convListObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL); |
1129 |
Tcl_DStringInit(&dString); |
1130 |
|
1131 |
while (hConv = DdeQueryNextServer(hConvList, hConv), hConv != 0) { |
1132 |
elementObjPtr = Tcl_NewListObj(0, (Tcl_Obj **) NULL); |
1133 |
DdeQueryConvInfo(hConv, QID_SYNC, &convInfo); |
1134 |
length = DdeQueryString(ddeInstance, |
1135 |
convInfo.hszSvcPartner, NULL, 0, CP_WINANSI); |
1136 |
Tcl_DStringSetLength(&dString, length); |
1137 |
name = Tcl_DStringValue(&dString); |
1138 |
DdeQueryString(ddeInstance, convInfo.hszSvcPartner, |
1139 |
name, length + 1, CP_WINANSI); |
1140 |
Tcl_ListObjAppendElement(interp, elementObjPtr, |
1141 |
Tcl_NewStringObj(name, length)); |
1142 |
length = DdeQueryString(ddeInstance, convInfo.hszTopic, |
1143 |
NULL, 0, CP_WINANSI); |
1144 |
Tcl_DStringSetLength(&dString, length); |
1145 |
name = Tcl_DStringValue(&dString); |
1146 |
DdeQueryString(ddeInstance, convInfo.hszTopic, name, |
1147 |
length + 1, CP_WINANSI); |
1148 |
Tcl_ListObjAppendElement(interp, elementObjPtr, |
1149 |
Tcl_NewStringObj(name, length)); |
1150 |
Tcl_ListObjAppendElement(interp, convListObjPtr, elementObjPtr); |
1151 |
} |
1152 |
DdeDisconnectList(hConvList); |
1153 |
Tcl_SetObjResult(interp, convListObjPtr); |
1154 |
Tcl_DStringFree(&dString); |
1155 |
break; |
1156 |
} |
1157 |
case DDE_EVAL: { |
1158 |
objc -= (async + 3); |
1159 |
((Tcl_Obj **) objv) += (async + 3); |
1160 |
|
1161 |
/* |
1162 |
* See if the target interpreter is local. If so, execute |
1163 |
* the command directly without going through the DDE server. |
1164 |
* Don't exchange objects between interps. The target interp could |
1165 |
* compile an object, producing a bytecode structure that refers to |
1166 |
* other objects owned by the target interp. If the target interp |
1167 |
* is then deleted, the bytecode structure would be referring to |
1168 |
* deallocated objects. |
1169 |
*/ |
1170 |
|
1171 |
for (riPtr = tsdPtr->interpListPtr; riPtr != NULL; riPtr |
1172 |
= riPtr->nextPtr) { |
1173 |
if (stricmp(serviceName, riPtr->name) == 0) { |
1174 |
break; |
1175 |
} |
1176 |
} |
1177 |
|
1178 |
if (riPtr != NULL) { |
1179 |
/* |
1180 |
* This command is to a local interp. No need to go through |
1181 |
* the server. |
1182 |
*/ |
1183 |
|
1184 |
Tcl_Preserve((ClientData) riPtr); |
1185 |
sendInterp = riPtr->interp; |
1186 |
Tcl_Preserve((ClientData) sendInterp); |
1187 |
|
1188 |
/* |
1189 |
* Don't exchange objects between interps. The target interp would |
1190 |
* compile an object, producing a bytecode structure that refers to |
1191 |
* other objects owned by the target interp. If the target interp |
1192 |
* is then deleted, the bytecode structure would be referring to |
1193 |
* deallocated objects. |
1194 |
*/ |
1195 |
|
1196 |
if (objc == 1) { |
1197 |
result = Tcl_EvalObjEx(sendInterp, objv[0], TCL_EVAL_GLOBAL); |
1198 |
} else { |
1199 |
objPtr = Tcl_ConcatObj(objc, objv); |
1200 |
Tcl_IncrRefCount(objPtr); |
1201 |
result = Tcl_EvalObjEx(sendInterp, objPtr, TCL_EVAL_GLOBAL); |
1202 |
Tcl_DecrRefCount(objPtr); |
1203 |
} |
1204 |
if (interp != sendInterp) { |
1205 |
if (result == TCL_ERROR) { |
1206 |
/* |
1207 |
* An error occurred, so transfer error information from the |
1208 |
* destination interpreter back to our interpreter. |
1209 |
*/ |
1210 |
|
1211 |
Tcl_ResetResult(interp); |
1212 |
objPtr = Tcl_GetVar2Ex(sendInterp, "errorInfo", NULL, |
1213 |
TCL_GLOBAL_ONLY); |
1214 |
string = Tcl_GetStringFromObj(objPtr, &length); |
1215 |
Tcl_AddObjErrorInfo(interp, string, length); |
1216 |
|
1217 |
objPtr = Tcl_GetVar2Ex(sendInterp, "errorCode", NULL, |
1218 |
TCL_GLOBAL_ONLY); |
1219 |
Tcl_SetObjErrorCode(interp, objPtr); |
1220 |
} |
1221 |
Tcl_SetObjResult(interp, Tcl_GetObjResult(sendInterp)); |
1222 |
} |
1223 |
Tcl_Release((ClientData) riPtr); |
1224 |
Tcl_Release((ClientData) sendInterp); |
1225 |
} else { |
1226 |
/* |
1227 |
* This is a non-local request. Send the script to the server and poll |
1228 |
* it for a result. |
1229 |
*/ |
1230 |
|
1231 |
if (MakeDdeConnection(interp, serviceName, &hConv) != TCL_OK) { |
1232 |
goto error; |
1233 |
} |
1234 |
|
1235 |
objPtr = Tcl_ConcatObj(objc, objv); |
1236 |
string = Tcl_GetStringFromObj(objPtr, &length); |
1237 |
ddeItemData = DdeCreateDataHandle(ddeInstance, string, length+1, 0, 0, |
1238 |
CF_TEXT, 0); |
1239 |
|
1240 |
if (async) { |
1241 |
ddeData = DdeClientTransaction((LPBYTE) ddeItemData, 0xFFFFFFFF, hConv, 0, |
1242 |
CF_TEXT, XTYP_EXECUTE, TIMEOUT_ASYNC, &ddeResult); |
1243 |
DdeAbandonTransaction(ddeInstance, hConv, ddeResult); |
1244 |
} else { |
1245 |
ddeData = DdeClientTransaction((LPBYTE) ddeItemData, 0xFFFFFFFF, hConv, 0, |
1246 |
CF_TEXT, XTYP_EXECUTE, 30000, NULL); |
1247 |
if (ddeData != 0) { |
1248 |
|
1249 |
ddeCookie = DdeCreateStringHandle(ddeInstance, |
1250 |
"$TCLEVAL$EXECUTE$RESULT", CP_WINANSI); |
1251 |
ddeData = DdeClientTransaction(NULL, 0, hConv, ddeCookie, |
1252 |
CF_TEXT, XTYP_REQUEST, 30000, NULL); |
1253 |
} |
1254 |
} |
1255 |
|
1256 |
|
1257 |
Tcl_DecrRefCount(objPtr); |
1258 |
|
1259 |
if (ddeData == 0) { |
1260 |
SetDdeError(interp); |
1261 |
goto errorNoResult; |
1262 |
} |
1263 |
|
1264 |
if (async == 0) { |
1265 |
Tcl_Obj *resultPtr; |
1266 |
|
1267 |
/* |
1268 |
* The return handle has a two or four element list in it. The first |
1269 |
* element is the return code (TCL_OK, TCL_ERROR, etc.). The |
1270 |
* second is the result of the script. If the return code is TCL_ERROR, |
1271 |
* then the third element is the value of the variable "errorCode", |
1272 |
* and the fourth is the value of the variable "errorInfo". |
1273 |
*/ |
1274 |
|
1275 |
resultPtr = Tcl_NewObj(); |
1276 |
length = DdeGetData(ddeData, NULL, 0, 0); |
1277 |
Tcl_SetObjLength(resultPtr, length); |
1278 |
string = Tcl_GetString(resultPtr); |
1279 |
DdeGetData(ddeData, string, length, 0); |
1280 |
Tcl_SetObjLength(resultPtr, strlen(string)); |
1281 |
|
1282 |
if (Tcl_ListObjIndex(NULL, resultPtr, 0, &objPtr) != TCL_OK) { |
1283 |
Tcl_DecrRefCount(resultPtr); |
1284 |
goto error; |
1285 |
} |
1286 |
if (Tcl_GetIntFromObj(NULL, objPtr, &result) != TCL_OK) { |
1287 |
Tcl_DecrRefCount(resultPtr); |
1288 |
goto error; |
1289 |
} |
1290 |
if (result == TCL_ERROR) { |
1291 |
Tcl_ResetResult(interp); |
1292 |
|
1293 |
if (Tcl_ListObjIndex(NULL, resultPtr, 3, &objPtr) != TCL_OK) { |
1294 |
Tcl_DecrRefCount(resultPtr); |
1295 |
goto error; |
1296 |
} |
1297 |
length = -1; |
1298 |
string = Tcl_GetStringFromObj(objPtr, &length); |
1299 |
Tcl_AddObjErrorInfo(interp, string, length); |
1300 |
|
1301 |
Tcl_ListObjIndex(NULL, resultPtr, 2, &objPtr); |
1302 |
Tcl_SetObjErrorCode(interp, objPtr); |
1303 |
} |
1304 |
if (Tcl_ListObjIndex(NULL, resultPtr, 1, &objPtr) != TCL_OK) { |
1305 |
Tcl_DecrRefCount(resultPtr); |
1306 |
goto error; |
1307 |
} |
1308 |
Tcl_SetObjResult(interp, objPtr); |
1309 |
Tcl_DecrRefCount(resultPtr); |
1310 |
} |
1311 |
} |
1312 |
} |
1313 |
} |
1314 |
if (ddeCookie != NULL) { |
1315 |
DdeFreeStringHandle(ddeInstance, ddeCookie); |
1316 |
} |
1317 |
if (ddeItem != NULL) { |
1318 |
DdeFreeStringHandle(ddeInstance, ddeItem); |
1319 |
} |
1320 |
if (ddeItemData != NULL) { |
1321 |
DdeFreeDataHandle(ddeItemData); |
1322 |
} |
1323 |
if (ddeData != NULL) { |
1324 |
DdeFreeDataHandle(ddeData); |
1325 |
} |
1326 |
if (hConv != NULL) { |
1327 |
DdeDisconnect(hConv); |
1328 |
} |
1329 |
return result; |
1330 |
|
1331 |
error: |
1332 |
Tcl_SetStringObj(Tcl_GetObjResult(interp), |
1333 |
"invalid data returned from server", -1); |
1334 |
|
1335 |
errorNoResult: |
1336 |
if (ddeCookie != NULL) { |
1337 |
DdeFreeStringHandle(ddeInstance, ddeCookie); |
1338 |
} |
1339 |
if (ddeItem != NULL) { |
1340 |
DdeFreeStringHandle(ddeInstance, ddeItem); |
1341 |
} |
1342 |
if (ddeItemData != NULL) { |
1343 |
DdeFreeDataHandle(ddeItemData); |
1344 |
} |
1345 |
if (ddeData != NULL) { |
1346 |
DdeFreeDataHandle(ddeData); |
1347 |
} |
1348 |
if (hConv != NULL) { |
1349 |
DdeDisconnect(hConv); |
1350 |
} |
1351 |
return TCL_ERROR; |
1352 |
} |
1353 |
|
1354 |
/* End of tclwindde.c */ |