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FILEDLG95_HandleCustomDialogMessages: 

- for the three handled messages we must return the required buffer size
- for CDM_GETFILEPATH paths like "dir\file" were handled incorrectly
- fixed multiple potential buffer overflows.
FILEDLG95_OnOpen: fixed a use of strncpy without '\0'.
FILEDLG95_SHELL_NewFolder: the size of lpstrCaption was incorrect
leading to a buffer overflow.
This commit is contained in:
Francois Gouget 1999-12-26 00:34:23 +00:00 committed by Alexandre Julliard
parent 27548eeb4a
commit f3ca842678
1 changed files with 36 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

84
dlls/commdlg/filedlg95.c
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@ -770,58 +770,49 @@ HRESULT SendCustomDlgNotificationMessage(HWND hwndParentDlg, UINT uCode)
HRESULT FILEDLG95_HandleCustomDialogMessages(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
LPSTR lpstrFileSpec;
char lpstrCurrentDir[MAX_PATH]="";
int reqSize;
char lpstrPath[MAX_PATH];
FileOpenDlgInfos *fodInfos = (FileOpenDlgInfos *) GetPropA(hwnd,FileOpenDlgInfosStr);
if(!fodInfos)
return TRUE;
return -1;
switch(uMsg)
{
case CDM_GETFILEPATH:
{
char lpstrPathSpec[MAX_PATH]="";
GetDlgItemTextA(hwnd,IDC_FILENAME,(LPSTR)lParam, (int)wParam);
lpstrFileSpec = (LPSTR)COMDLG32_PathFindFilenameA((LPSTR)lParam);
strcpy(lpstrPathSpec,(LPSTR)lParam);
COMDLG32_PathRemoveFileSpecA(lpstrPathSpec);
if(!lpstrPathSpec[0])
COMDLG32_SHGetPathFromIDListA(fodInfos->ShellInfos.pidlAbsCurrent,
lpstrPathSpec);
strcat(lpstrPathSpec,"\\");
strcat(lpstrPathSpec,(LPSTR)lParam);
strcpy((LPSTR)lParam,(LPSTR)lpstrPathSpec);
}
return TRUE;
case CDM_GETFOLDERPATH:
if(lParam)
{
if(fodInfos)
{
COMDLG32_SHGetPathFromIDListA(fodInfos->ShellInfos.pidlAbsCurrent,
lpstrCurrentDir);
strncpy((LPSTR)lParam,lpstrCurrentDir,(int)wParam);
GetDlgItemTextA(hwnd,IDC_FILENAME,lpstrPath, sizeof(lpstrPath));
lpstrFileSpec = (LPSTR)COMDLG32_PathFindFilenameA(lpstrPath);
if (lpstrFileSpec==lpstrPath) {
char lpstrCurrentDir[MAX_PATH];
/* Prepend the current path */
COMDLG32_SHGetPathFromIDListA(fodInfos->ShellInfos.pidlAbsCurrent,lpstrCurrentDir);
if ((LPSTR)lParam!=NULL)
wsnprintfA((LPSTR)lParam,(int)wParam,"%s\\%s",lpstrCurrentDir,lpstrPath);
reqSize=strlen(lpstrCurrentDir)+1+strlen(lpstrPath)+1;
} else {
lstrcpynA((LPSTR)lParam,(LPSTR)lpstrPath,(int)wParam);
reqSize=strlen(lpstrPath);
}
else
*((LPSTR)lParam)=0;
}
return TRUE;
/* return the required buffer size */
return reqSize;
case CDM_GETFOLDERPATH:
COMDLG32_SHGetPathFromIDListA(fodInfos->ShellInfos.pidlAbsCurrent,lpstrPath);
if ((LPSTR)lParam!=NULL)
lstrcpynA((LPSTR)lParam,lpstrPath,(int)wParam);
return strlen(lpstrPath);
case CDM_GETSPEC:
if(lParam)
{
GetDlgItemTextA(hwnd,IDC_FILENAME,(LPSTR)lParam, (int)wParam);
lpstrFileSpec = (LPSTR)COMDLG32_PathFindFilenameA((LPSTR)lParam);
if(lpstrFileSpec)
strcpy((LPSTR)lParam, lpstrFileSpec);
else
*((LPSTR)lParam)=0;
}
return TRUE;
reqSize=GetDlgItemTextA(hwnd,IDC_FILENAME,lpstrPath, sizeof(lpstrPath));
lpstrFileSpec = (LPSTR)COMDLG32_PathFindFilenameA(lpstrPath);
if ((LPSTR)lParam!=NULL)
lstrcpynA((LPSTR)lParam, lpstrFileSpec, (int)wParam);
return strlen(lpstrFileSpec);
case CDM_HIDECONTROL:
case CDM_SETCONTROLTEXT:
case CDM_SETDEFEXT:
FIXME("CDM_HIDECONTROL,CDM_SETCONTROLTEXT,CDM_SETDEFEXT not implemented\n");
return TRUE;
}
return TRUE;
return -1;
}
/***********************************************************************
@ -1147,13 +1138,10 @@ BOOL FILEDLG95_OnOpen(HWND hwnd)
/* Add drive spec \TEXT => C:\TEXT */
case '\\':
{
INT iCopy = 2;
char lpstrTmp[MAX_PATH] = "";
if(!strlen(lpstrPathSpec))
iCopy = 3;
strncpy(lpstrTmp,lpstrCurrentDir,iCopy);
strcat(lpstrTmp,lpstrPathSpec);
strcpy(lpstrPathSpec,lpstrTmp);
int lenPathSpec=strlen(lpstrPathSpec);
INT iCopy = (lenPathSpec!=0?2:3);
memmove(lpstrPathSpec+iCopy,lpstrPathSpec,lenPathSpec);
strncpy(lpstrPathSpec,lpstrCurrentDir,iCopy);
}
break;
/* Go to parent ..\TEXT */
@ -1165,7 +1153,7 @@ BOOL FILEDLG95_OnOpen(HWND hwnd)
iSize = lpstrTmp - lpstrCurrentDir;
strncpy(lpstrTmp2,lpstrCurrentDir,iSize + 1);
if(strlen(lpstrSpecifiedByUser) <= 3)
strcpy(lpstrFileSpec,"");
*lpstrFileSpec='\0';
if(strcmp(lpstrPathSpec,".."))
strcat(lpstrTmp2,&lpstrPathSpec[3]);
strcpy(lpstrPathSpec,lpstrTmp2);
@ -1634,11 +1622,11 @@ static BOOL FILEDLG95_SHELL_NewFolder(HWND hwnd)
{
char lpstrText[128+MAX_PATH];
char lpstrTempText[128];
char lpstrCaption[32];
char lpstrCaption[256];
/* Cannot Create folder because of permissions */
LoadStringA(COMMDLG_hInstance32, IDS_CREATEFOLDER_DENIED, lpstrTempText, 256);
LoadStringA(COMMDLG_hInstance32, IDS_FILEOPEN_CAPTION, lpstrCaption, 256);
LoadStringA(COMMDLG_hInstance32, IDS_CREATEFOLDER_DENIED, lpstrTempText, sizeof(lpstrTempText));
LoadStringA(COMMDLG_hInstance32, IDS_FILEOPEN_CAPTION, lpstrCaption, sizeof(lpstrCaption));
sprintf(lpstrText,lpstrTempText, lpstrDirName);
MessageBoxA(hwnd,lpstrText, lpstrCaption, MB_OK | MB_ICONEXCLAMATION);
}