winedbg: Don't dereference possibly NULL thread pointer.
[wine/zf.git] / dlls / shell32 / debughlp.c
bloba7ae616923a34ac4b41e6f64cd0d8b9a676a7146
1 /*
2 * Helper functions for debugging
4 * Copyright 1998, 2002 Juergen Schmied
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 #include <ctype.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <stdio.h>
25 #include "windef.h"
26 #include "wingdi.h"
27 #include "pidl.h"
28 #include "shldisp.h"
29 #include "wine/debug.h"
30 #include "debughlp.h"
31 #include "docobj.h"
32 #include "shell32_main.h"
35 WINE_DEFAULT_DEBUG_CHANNEL(pidl);
37 static
38 LPCITEMIDLIST _dbg_ILGetNext(LPCITEMIDLIST pidl)
40 WORD len;
42 if(pidl)
44 len = pidl->mkid.cb;
45 if (len)
47 return (LPCITEMIDLIST) (((const BYTE*)pidl)+len);
50 return NULL;
53 static
54 BOOL _dbg_ILIsDesktop(LPCITEMIDLIST pidl)
56 return ( !pidl || pidl->mkid.cb == 0x00 );
59 static
60 const PIDLDATA* _dbg_ILGetDataPointer(LPCITEMIDLIST pidl)
62 if(pidl && pidl->mkid.cb != 0x00)
63 return (const PIDLDATA*)pidl->mkid.abID;
64 return NULL;
67 static
68 LPCSTR _dbg_ILGetTextPointer(LPCITEMIDLIST pidl)
70 const PIDLDATA* pdata =_dbg_ILGetDataPointer(pidl);
72 if (pdata)
74 switch (pdata->type)
76 case PT_GUID:
77 case PT_SHELLEXT:
78 case PT_YAGUID:
79 return NULL;
81 case PT_DRIVE:
82 case PT_DRIVE1:
83 case PT_DRIVE2:
84 case PT_DRIVE3:
85 return pdata->u.drive.szDriveName;
87 case PT_FOLDER:
88 case PT_FOLDER1:
89 case PT_VALUE:
90 case PT_IESPECIAL1:
91 case PT_IESPECIAL2:
92 return pdata->u.file.szNames;
94 case PT_WORKGRP:
95 case PT_COMP:
96 case PT_NETWORK:
97 case PT_NETPROVIDER:
98 case PT_SHARE:
99 return pdata->u.network.szNames;
102 return NULL;
105 static
106 LPCWSTR _dbg_ILGetTextPointerW(LPCITEMIDLIST pidl)
108 const PIDLDATA* pdata =_dbg_ILGetDataPointer(pidl);
110 if (pdata)
112 switch (pdata->type)
114 case PT_GUID:
115 case PT_SHELLEXT:
116 case PT_YAGUID:
117 return NULL;
119 case PT_DRIVE:
120 case PT_DRIVE1:
121 case PT_DRIVE2:
122 case PT_DRIVE3:
123 /* return (LPSTR)&(pdata->u.drive.szDriveName);*/
124 return NULL;
126 case PT_FOLDER:
127 case PT_FOLDER1:
128 case PT_VALUE:
129 case PT_IESPECIAL1:
130 case PT_IESPECIAL2:
131 /* return (LPSTR)&(pdata->u.file.szNames); */
132 return NULL;
134 case PT_WORKGRP:
135 case PT_COMP:
136 case PT_NETWORK:
137 case PT_NETPROVIDER:
138 case PT_SHARE:
139 /* return (LPSTR)&(pdata->u.network.szNames); */
140 return NULL;
142 case PT_VALUEW:
143 return (LPCWSTR)pdata->u.file.szNames;
146 return NULL;
150 static
151 LPCSTR _dbg_ILGetSTextPointer(LPCITEMIDLIST pidl)
153 const PIDLDATA* pdata =_dbg_ILGetDataPointer(pidl);
155 if (pdata)
157 switch (pdata->type)
159 case PT_FOLDER:
160 case PT_VALUE:
161 case PT_IESPECIAL1:
162 case PT_IESPECIAL2:
163 return pdata->u.file.szNames + strlen (pdata->u.file.szNames) + 1;
165 case PT_WORKGRP:
166 return pdata->u.network.szNames + strlen (pdata->u.network.szNames) + 1;
169 return NULL;
172 static
173 LPCWSTR _dbg_ILGetSTextPointerW(LPCITEMIDLIST pidl)
175 const PIDLDATA* pdata =_dbg_ILGetDataPointer(pidl);
177 if (pdata)
179 switch (pdata->type)
181 case PT_FOLDER:
182 case PT_VALUE:
183 case PT_IESPECIAL1:
184 case PT_IESPECIAL2:
185 /*return (LPSTR)(pdata->u.file.szNames + strlen (pdata->u.file.szNames) + 1); */
186 return NULL;
188 case PT_WORKGRP:
189 /* return (LPSTR)(pdata->u.network.szNames + strlen (pdata->u.network.szNames) + 1); */
190 return NULL;
192 case PT_VALUEW:
193 return (LPCWSTR)(pdata->u.file.szNames + lstrlenW ((LPCWSTR)pdata->u.file.szNames) + 1);
196 return NULL;
200 static
201 IID* _dbg_ILGetGUIDPointer(LPCITEMIDLIST pidl)
203 LPPIDLDATA pdata =_ILGetDataPointer(pidl);
205 if (pdata)
207 switch (pdata->type)
209 case PT_SHELLEXT:
210 case PT_GUID:
211 case PT_YAGUID:
212 return &(pdata->u.guid.guid);
215 return NULL;
218 static
219 void _dbg_ILSimpleGetText (LPCITEMIDLIST pidl, LPSTR szOut, UINT uOutSize)
221 LPCSTR szSrc;
222 LPCWSTR szSrcW;
223 GUID const * riid;
225 if (!pidl) return;
227 if (szOut)
228 *szOut = 0;
230 if (_dbg_ILIsDesktop(pidl))
232 /* desktop */
233 if (szOut) lstrcpynA(szOut, "Desktop", uOutSize);
235 else if (( szSrc = _dbg_ILGetTextPointer(pidl) ))
237 /* filesystem */
238 if (szOut) lstrcpynA(szOut, szSrc, uOutSize);
240 else if (( szSrcW = _dbg_ILGetTextPointerW(pidl) ))
242 CHAR tmp[MAX_PATH];
243 /* unicode filesystem */
244 WideCharToMultiByte(CP_ACP,0,szSrcW, -1, tmp, MAX_PATH, NULL, NULL);
245 if (szOut) lstrcpynA(szOut, tmp, uOutSize);
247 else if (( riid = _dbg_ILGetGUIDPointer(pidl) ))
249 if (szOut)
250 sprintf( szOut, "{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
251 riid->Data1, riid->Data2, riid->Data3,
252 riid->Data4[0], riid->Data4[1], riid->Data4[2], riid->Data4[3],
253 riid->Data4[4], riid->Data4[5], riid->Data4[6], riid->Data4[7] );
260 void pdump (LPCITEMIDLIST pidl)
262 LPCITEMIDLIST pidltemp = pidl;
264 if (!TRACE_ON(pidl)) return;
266 if (! pidltemp)
268 MESSAGE ("-------- pidl=NULL (Desktop)\n");
270 else
272 MESSAGE ("-------- pidl=%p\n", pidl);
273 if (pidltemp->mkid.cb)
277 if (_ILIsUnicode(pidltemp))
279 DWORD dwAttrib = 0;
280 const PIDLDATA* pData = _dbg_ILGetDataPointer(pidltemp);
281 DWORD type = pData ? pData->type : 0;
282 LPCWSTR szLongName = _dbg_ILGetTextPointerW(pidltemp);
283 LPCWSTR szShortName = _dbg_ILGetSTextPointerW(pidltemp);
284 char szName[MAX_PATH];
286 _dbg_ILSimpleGetText(pidltemp, szName, MAX_PATH);
287 if ( pData && (PT_FOLDER == type || PT_VALUE == type) )
288 dwAttrib = pData->u.file.uFileAttribs;
290 MESSAGE ("[%p] size=%04u type=%x attr=0x%08x name=%s (%s,%s)\n",
291 pidltemp, pidltemp->mkid.cb, type, dwAttrib,
292 debugstr_a(szName), debugstr_w(szLongName), debugstr_w(szShortName));
294 else
296 DWORD dwAttrib = 0;
297 const PIDLDATA* pData = _dbg_ILGetDataPointer(pidltemp);
298 DWORD type = pData ? pData->type : 0;
299 LPCSTR szLongName = _dbg_ILGetTextPointer(pidltemp);
300 LPCSTR szShortName = _dbg_ILGetSTextPointer(pidltemp);
301 char szName[MAX_PATH];
303 _dbg_ILSimpleGetText(pidltemp, szName, MAX_PATH);
304 if ( pData && (PT_FOLDER == type || PT_VALUE == type) )
305 dwAttrib = pData->u.file.uFileAttribs;
307 MESSAGE ("[%p] size=%04u type=%x attr=0x%08x name=%s (%s,%s)\n",
308 pidltemp, pidltemp->mkid.cb, type, dwAttrib,
309 debugstr_a(szName), debugstr_a(szLongName), debugstr_a(szShortName));
312 pidltemp = _dbg_ILGetNext(pidltemp);
314 } while (pidltemp && pidltemp->mkid.cb);
316 else
318 MESSAGE ("empty pidl (Desktop)\n");
320 pcheck(pidl);
324 static void dump_pidl_hex( LPCITEMIDLIST pidl )
326 const unsigned char *p = (const unsigned char *)pidl;
327 const int max_bytes = 0x80;
328 #define max_line 0x10
329 char szHex[max_line*3+1], szAscii[max_line+1];
330 int i, n;
332 n = pidl->mkid.cb;
333 if( n>max_bytes )
334 n = max_bytes;
335 for( i=0; i<n; i++ )
337 sprintf( &szHex[ (i%max_line)*3 ], "%02X ", p[i] );
338 szAscii[ (i%max_line) ] = isprint( p[i] ) ? p[i] : '.';
340 /* print out at the end of each line and when we're finished */
341 if( i!=(n-1) && (i%max_line) != (max_line-1) )
342 continue;
343 szAscii[ (i%max_line)+1 ] = 0;
344 ERR("%-*s %s\n", max_line*3, szHex, szAscii );
348 BOOL pcheck( LPCITEMIDLIST pidl )
350 DWORD type;
351 LPCITEMIDLIST pidltemp = pidl;
353 while( pidltemp && pidltemp->mkid.cb )
355 type = _dbg_ILGetDataPointer(pidltemp)->type;
356 switch( type )
358 case PT_CPLAPPLET:
359 case PT_GUID:
360 case PT_SHELLEXT:
361 case PT_DRIVE:
362 case PT_DRIVE1:
363 case PT_DRIVE2:
364 case PT_DRIVE3:
365 case PT_FOLDER:
366 case PT_VALUE:
367 case PT_VALUEW:
368 case PT_FOLDER1:
369 case PT_WORKGRP:
370 case PT_COMP:
371 case PT_NETPROVIDER:
372 case PT_NETWORK:
373 case PT_IESPECIAL1:
374 case PT_YAGUID:
375 case PT_IESPECIAL2:
376 case PT_SHARE:
377 break;
378 default:
379 ERR("unknown IDLIST %p [%p] size=%u type=%x\n",
380 pidl, pidltemp, pidltemp->mkid.cb,type );
381 dump_pidl_hex( pidltemp );
382 return FALSE;
384 pidltemp = _dbg_ILGetNext(pidltemp);
386 return TRUE;
389 static const struct {
390 REFIID riid;
391 const char *name;
392 } InterfaceDesc[] = {
393 {&IID_IUnknown, "IID_IUnknown"},
394 {&IID_IClassFactory, "IID_IClassFactory"},
395 {&IID_IShellView, "IID_IShellView"},
396 {&IID_IOleCommandTarget, "IID_IOleCommandTarget"},
397 {&IID_IDropTarget, "IID_IDropTarget"},
398 {&IID_IDropSource, "IID_IDropSource"},
399 {&IID_IViewObject, "IID_IViewObject"},
400 {&IID_IContextMenu, "IID_IContextMenu"},
401 {&IID_IShellExtInit, "IID_IShellExtInit"},
402 {&IID_IShellFolder, "IID_IShellFolder"},
403 {&IID_IShellFolder2, "IID_IShellFolder2"},
404 {&IID_IPersist, "IID_IPersist"},
405 {&IID_IPersistFolder, "IID_IPersistFolder"},
406 {&IID_IPersistFolder2, "IID_IPersistFolder2"},
407 {&IID_IPersistFolder3, "IID_IPersistFolder3"},
408 {&IID_IExtractIconA, "IID_IExtractIconA"},
409 {&IID_IExtractIconW, "IID_IExtractIconW"},
410 {&IID_IDataObject, "IID_IDataObject"},
411 {&IID_IAutoComplete, "IID_IAutoComplete"},
412 {&IID_IAutoComplete2, "IID_IAutoComplete2"},
413 {&IID_IShellLinkA, "IID_IShellLinkA"},
414 {&IID_IShellLinkW, "IID_IShellLinkW"},
415 {NULL,NULL}};
417 const char * shdebugstr_guid( const struct _GUID *id )
419 int i;
420 const char* name = NULL;
421 char clsidbuf[100];
423 if (!id) return "(null)";
425 for (i = 0; InterfaceDesc[i].riid && !name; i++) {
426 if (IsEqualIID(InterfaceDesc[i].riid, id)) name = InterfaceDesc[i].name;
428 if (!name) {
429 if (HCR_GetClassNameA(id, clsidbuf, 100))
430 name = clsidbuf;
433 return wine_dbg_sprintf( "%s (%s)", debugstr_guid(id), name ? name : "unknown" );