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[CMD] Add missing memory allocation NULL checks (#161). CORE-8304

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Adapted from a patch by Jacob S. Preciado.

Bring also the code suggestions emitted during review.
This commit is contained in:
Hermès Bélusca-Maïto 2017-12-03 18:49:41 +01:00
parent 73798d2e71
commit 3f892a8d6b
No known key found for this signature in database
GPG key ID: 3B2539C65E7B93D0
16 changed files with 293 additions and 147 deletions
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4
base/shell/cmd/alias.c
View file

@ -64,7 +64,10 @@ PrintAlias (VOID)
/* allocate memory for an extra \0 char to make parsing easier */
ptr = cmd_alloc(len + sizeof(TCHAR));
if (!ptr)
{
WARN("Cannot allocate memory for ptr!\n");
return;
}
Aliases = ptr;
@ -107,6 +110,7 @@ VOID ExpandAlias (LPTSTR cmd, INT maxlen)
buffer = cmd_alloc(maxlen);
if (!buffer)
{
WARN("Cannot allocate memory for alias buffer!\n");
cmd_free(tmp);
return;
}

77
base/shell/cmd/assoc.c
View file

@ -33,44 +33,40 @@ PrintAssociation(LPTSTR extension)
return_val = RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\Classes"), 0, KEY_READ, &hKey);
if (return_val != ERROR_SUCCESS)
{
RegCloseKey(hKey);
return -1;
}
return_val = RegOpenKeyEx(hKey, extension, 0, KEY_READ, &hInsideKey);
RegCloseKey(hKey);
if (return_val != ERROR_SUCCESS)
{
RegCloseKey(hKey);
RegCloseKey(hInsideKey);
return 0;
}
/* obtain string length */
return_val = RegQueryValueEx(hInsideKey, NULL, NULL, NULL, NULL, &fileTypeLength);
if (return_val == ERROR_FILE_NOT_FOUND) /* no default value, don't display */
if (return_val == ERROR_FILE_NOT_FOUND) /* no default value, don't display */
{
RegCloseKey(hInsideKey);
RegCloseKey(hKey);
return 0;
}
if (return_val != ERROR_SUCCESS)
{
RegCloseKey(hInsideKey);
RegCloseKey(hKey);
return -2;
}
fileType = cmd_alloc(fileTypeLength * sizeof(TCHAR));
if (!fileType)
{
WARN("Cannot allocate memory for fileType!\n");
RegCloseKey(hInsideKey);
return -2;
}
/* obtain actual file type */
return_val = RegQueryValueEx(hInsideKey, NULL, NULL, NULL, (LPBYTE) fileType, &fileTypeLength);
return_val = RegQueryValueEx(hInsideKey, NULL, NULL, NULL, (LPBYTE)fileType, &fileTypeLength);
RegCloseKey(hInsideKey);
RegCloseKey(hKey);
if (return_val != ERROR_SUCCESS)
{
@ -78,19 +74,17 @@ PrintAssociation(LPTSTR extension)
return -2;
}
if (fileTypeLength != 0) /* if there is a default key, display relevant information */
if (fileTypeLength != 0) /* if there is a default key, display relevant information */
{
ConOutPrintf(_T("%s=%s\n"), extension, fileType);
}
if (fileTypeLength)
cmd_free(fileType);
cmd_free(fileType);
return 1;
}
static INT
PrintAllAssociations()
PrintAllAssociations(VOID)
{
DWORD return_val = 0;
HKEY hKey = NULL;
@ -103,10 +97,7 @@ PrintAllAssociations()
return_val = RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("SOFTWARE\\Classes"), 0, KEY_READ, &hKey);
if (return_val != ERROR_SUCCESS)
{
RegCloseKey(hKey);
return -1;
}
return_val = RegQueryInfoKey(hKey, NULL, NULL, NULL, &numKeys, &extLength, NULL, NULL, NULL, NULL, NULL, NULL);
@ -118,8 +109,14 @@ PrintAllAssociations()
extLength++;
extName = cmd_alloc(extLength * sizeof(TCHAR));
if (!extName)
{
WARN("Cannot allocate memory for extName!\n");
RegCloseKey(hKey);
return -2;
}
for(keyCtr = 0; keyCtr < numKeys; keyCtr++)
for (keyCtr = 0; keyCtr < numKeys; keyCtr++)
{
DWORD buffer_size = extLength;
return_val = RegEnumKeyEx(hKey, keyCtr, extName, &buffer_size, NULL, NULL, NULL, NULL);
@ -139,9 +136,7 @@ PrintAllAssociations()
RegCloseKey(hKey);
if (extName)
cmd_free(extName);
cmd_free(extName);
return numKeys;
}
@ -157,28 +152,20 @@ AddAssociation(LPTSTR extension, LPTSTR type)
return -1;
return_val = RegCreateKeyEx(hKey, extension, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &insideKey, NULL);
RegCloseKey(hKey);
if (return_val != ERROR_SUCCESS)
{
RegCloseKey(hKey);
return -1;
}
return_val = RegSetValueEx(insideKey, NULL, 0, REG_SZ, (LPBYTE)type, (_tcslen(type) + 1) * sizeof(TCHAR));
RegCloseKey(insideKey);
if (return_val != ERROR_SUCCESS)
{
RegCloseKey(insideKey);
RegCloseKey(hKey);
return -2;
}
RegCloseKey(insideKey);
RegCloseKey(hKey);
return 0;
}
static int
RemoveAssociation(LPTSTR extension)
{
@ -191,19 +178,15 @@ RemoveAssociation(LPTSTR extension)
return -1;
return_val = RegDeleteKey(hKey, extension);
RegCloseKey(hKey);
if (return_val != ERROR_SUCCESS)
{
RegCloseKey(hKey);
return -2;
}
RegCloseKey(hKey);
return 0;
}
INT CommandAssoc (LPTSTR param)
{
/* print help */
@ -216,7 +199,9 @@ INT CommandAssoc (LPTSTR param)
nErrorLevel = 0;
if (_tcslen(param) == 0)
{
PrintAllAssociations();
}
else
{
LPTSTR lpEqualSign = _tcschr(param, _T('='));
@ -224,9 +209,15 @@ INT CommandAssoc (LPTSTR param)
{
LPTSTR fileType = lpEqualSign + 1;
LPTSTR extension = cmd_alloc((lpEqualSign - param + 1) * sizeof(TCHAR));
if (!extension)
{
WARN("Cannot allocate memory for extension!\n");
error_out_of_memory();
return 1;
}
_tcsncpy(extension, param, lpEqualSign - param);
extension[lpEqualSign - param] = (TCHAR)0;
extension[lpEqualSign - param] = _T('\0');
if (_tcslen(fileType) == 0)
/* if the equal sign is the last character
@ -237,7 +228,7 @@ INT CommandAssoc (LPTSTR param)
else
/* otherwise, add the key and print out the association*/
{
AddAssociation( extension, fileType);
AddAssociation(extension, fileType);
PrintAssociation(extension);
}
@ -248,7 +239,7 @@ INT CommandAssoc (LPTSTR param)
/* no equal sign, print all associations */
INT retval = PrintAssociation(param);
if (retval == 0) /* if nothing printed out */
if (retval == 0) /* if nothing printed out */
ConOutResPrintf(STRING_ASSOC_ERROR, param);
}
}

19
base/shell/cmd/batch.c
View file

@ -110,13 +110,14 @@ LPTSTR FindArg(TCHAR Char, BOOL *IsParam0)
*
*/
LPTSTR BatchParams (LPTSTR s1, LPTSTR s2)
LPTSTR BatchParams(LPTSTR s1, LPTSTR s2)
{
LPTSTR dp = (LPTSTR)cmd_alloc ((_tcslen(s1) + _tcslen(s2) + 3) * sizeof (TCHAR));
/* JPP 20-Jul-1998 added error checking */
if (dp == NULL)
{
WARN("Cannot allocate memory for dp!\n");
error_out_of_memory();
return NULL;
}
@ -158,7 +159,7 @@ LPTSTR BatchParams (LPTSTR s1, LPTSTR s2)
/*
* free the allocated memory of a batch file
*/
VOID ClearBatch()
VOID ClearBatch(VOID)
{
TRACE ("ClearBatch mem = %08x free = %d\n", bc->mem, bc->memfree);
@ -182,7 +183,7 @@ VOID ClearBatch()
* message
*/
VOID ExitBatch()
VOID ExitBatch(VOID)
{
ClearBatch();
@ -234,7 +235,7 @@ void BatchFile2Mem(HANDLE hBatchFile)
* The firstword parameter is the full filename of the batch file.
*
*/
INT Batch (LPTSTR fullname, LPTSTR firstword, LPTSTR param, PARSED_COMMAND *Cmd)
INT Batch(LPTSTR fullname, LPTSTR firstword, LPTSTR param, PARSED_COMMAND *Cmd)
{
BATCH_CONTEXT new;
LPFOR_CONTEXT saved_fc;
@ -396,12 +397,18 @@ VOID AddBatchRedirection(REDIRECTION **RedirList)
* Read a single line from the batch file from the current batch/memory position.
* Almost a copy of FileGetString with same UNICODE handling
*/
BOOL BatchGetString (LPTSTR lpBuffer, INT nBufferLength)
BOOL BatchGetString(LPTSTR lpBuffer, INT nBufferLength)
{
LPSTR lpString;
INT len = 0;
#ifdef _UNICODE
lpString = cmd_alloc(nBufferLength);
if (!lpString)
{
WARN("Cannot allocate memory for lpString\n");
error_out_of_memory();
return FALSE;
}
#else
lpString = lpBuffer;
#endif
@ -443,7 +450,7 @@ BOOL BatchGetString (LPTSTR lpBuffer, INT nBufferLength)
*
* Set eflag to 0 if line is not to be echoed else 1
*/
LPTSTR ReadBatchLine ()
LPTSTR ReadBatchLine(VOID)
{
TRACE ("ReadBatchLine ()\n");

10
base/shell/cmd/batch.h
View file

@ -45,10 +45,10 @@ extern BOOL bEcho; /* The echo flag */
extern TCHAR textline[BATCH_BUFFSIZE]; /* Buffer for reading Batch file lines */
LPTSTR FindArg (TCHAR, BOOL *);
LPTSTR BatchParams (LPTSTR, LPTSTR);
VOID ExitBatch (VOID);
INT Batch (LPTSTR, LPTSTR, LPTSTR, PARSED_COMMAND *);
BOOL BatchGetString (LPTSTR lpBuffer, INT nBufferLength);
LPTSTR FindArg(TCHAR, BOOL *);
LPTSTR BatchParams(LPTSTR, LPTSTR);
VOID ExitBatch(VOID);
INT Batch(LPTSTR, LPTSTR, LPTSTR, PARSED_COMMAND *);
BOOL BatchGetString(LPTSTR lpBuffer, INT nBufferLength);
LPTSTR ReadBatchLine(VOID);
VOID AddBatchRedirection(REDIRECTION **);

4
base/shell/cmd/cmd.h
View file

@ -214,12 +214,12 @@ INT cmd_goto (LPTSTR);
/* Prototypes for HISTORY.C */
#ifdef FEATURE_HISTORY
LPCTSTR PeekHistory(INT);
VOID History (INT, LPTSTR);/*add entries browse history*/
VOID History(INT, LPTSTR);/*add entries browse history*/
VOID History_move_to_bottom(VOID);/*F3*/
VOID InitHistory(VOID);
VOID CleanHistory(VOID);
VOID History_del_current_entry(LPTSTR str);/*CTRL-D*/
INT CommandHistory (LPTSTR param);
INT CommandHistory(LPTSTR param);
#endif
/* Prototypes for IF.C */

8
base/shell/cmd/cmdinput.c
View file

@ -245,7 +245,7 @@ BOOL ReadCommand(LPTSTR str, INT maxlen)
#ifdef FEATURE_HISTORY
/* add to the history */
if (str[0])
History (0, str);
History(0, str);
#endif /*FEATURE_HISTORY*/
str[charcount++] = _T('\n');
str[charcount] = _T('\0');
@ -479,7 +479,7 @@ BOOL ReadCommand(LPTSTR str, INT maxlen)
#ifdef FEATURE_HISTORY
/* add to the history */
if (str[0])
History (0, str);
History(0, str);
#endif
str[charcount++] = _T('\n');
str[charcount] = _T('\0');
@ -503,7 +503,7 @@ BOOL ReadCommand(LPTSTR str, INT maxlen)
#ifdef FEATURE_HISTORY
/* get previous command from buffer */
ClearCommandLine (str, maxlen, orgx, orgy);
History (-1, str);
History(-1, str);
current = charcount = _tcslen (str);
if (((charcount + orgx) / maxx) + orgy > maxy - 1)
orgy += maxy - ((charcount + orgx) / maxx + orgy + 1);
@ -516,7 +516,7 @@ BOOL ReadCommand(LPTSTR str, INT maxlen)
#ifdef FEATURE_HISTORY
/* get next command from buffer */
ClearCommandLine (str, maxlen, orgx, orgy);
History (1, str);
History(1, str);
current = charcount = _tcslen (str);
if (((charcount + orgx) / maxx) + orgy > maxy - 1)
orgy += maxy - ((charcount + orgx) / maxx + orgy + 1);

8
base/shell/cmd/dir.c
View file

@ -1390,7 +1390,7 @@ DirList(IN OUT LPTSTR szFullPath, /* [IN] The full path we are listing with tr
ptrStartNode = cmd_alloc(sizeof(DIRFINDLISTNODE));
if (ptrStartNode == NULL)
{
WARN("DEBUG: Cannot allocate memory for ptrStartNode!\n");
WARN("Cannot allocate memory for ptrStartNode!\n");
return 1; /* Error cannot allocate memory for 1st object */
}
ptrStartNode->stInfo.ptrHead = NULL;
@ -1408,7 +1408,7 @@ DirList(IN OUT LPTSTR szFullPath, /* [IN] The full path we are listing with tr
ptrNextNode->ptrNext = cmd_alloc(sizeof(DIRFINDLISTNODE));
if (ptrNextNode->ptrNext == NULL)
{
WARN("DEBUG: Cannot allocate memory for ptrNextNode->ptrNext!\n");
WARN("Cannot allocate memory for ptrNextNode->ptrNext!\n");
DirNodeCleanup(ptrStartNode, &dwCount);
FindClose(hSearch);
return 1;
@ -1458,7 +1458,7 @@ DirList(IN OUT LPTSTR szFullPath, /* [IN] The full path we are listing with tr
*ptrCurNode = cmd_alloc(sizeof(DIRFINDSTREAMNODE));
if (*ptrCurNode == NULL)
{
WARN("DEBUG: Cannot allocate memory for *ptrCurNode!\n");
WARN("Cannot allocate memory for *ptrCurNode!\n");
DirNodeCleanup(ptrStartNode, &dwCount);
FindClose(hStreams);
FindClose(hSearch);
@ -1512,7 +1512,7 @@ DirList(IN OUT LPTSTR szFullPath, /* [IN] The full path we are listing with tr
ptrFileArray = cmd_alloc(sizeof(PDIRFINDINFO) * dwCount);
if (ptrFileArray == NULL)
{
WARN("DEBUG: Cannot allocate memory for ptrFileArray!\n");
WARN("Cannot allocate memory for ptrFileArray!\n");
DirNodeCleanup(ptrStartNode, &dwCount);
return 1;
}

3
base/shell/cmd/dirstack.c
View file

@ -37,7 +37,8 @@ PushDirectory (LPTSTR pszPath)
LPDIRENTRY lpDir = cmd_alloc(FIELD_OFFSET(DIRENTRY, szPath[_tcslen(pszPath) + 1]));
if (!lpDir)
{
error_out_of_memory ();
WARN("Cannot allocate memory for lpDir\n");
error_out_of_memory();
return -1;
}

8
base/shell/cmd/for.c
View file

@ -96,9 +96,13 @@ static LPTSTR ReadFileContents(FILE *InputFile, TCHAR *Buffer)
{
SIZE_T Len = 0;
SIZE_T AllocLen = 1000;
LPTSTR Contents = cmd_alloc(AllocLen * sizeof(TCHAR));
if (!Contents)
{
WARN("Cannot allocate memory for Contents!\n");
return NULL;
}
while (_fgetts(Buffer, CMDLINE_LENGTH, InputFile))
{
@ -109,6 +113,7 @@ static LPTSTR ReadFileContents(FILE *InputFile, TCHAR *Buffer)
Contents = cmd_realloc(Contents, (AllocLen *= 2) * sizeof(TCHAR));
if (!Contents)
{
WARN("Cannot reallocate memory for Contents!\n");
cmd_free(OldContents);
return NULL;
}
@ -454,7 +459,7 @@ static INT ForRecursive(PARSED_COMMAND *Cmd, LPTSTR List, TCHAR *Buffer, TCHAR *
return Ret;
}
BOOL
INT
ExecuteFor(PARSED_COMMAND *Cmd)
{
TCHAR Buffer[CMDLINE_LENGTH]; /* Buffer to hold the variable value */
@ -470,6 +475,7 @@ ExecuteFor(PARSED_COMMAND *Cmd)
lpNew = cmd_alloc(sizeof(FOR_CONTEXT));
if (!lpNew)
{
WARN("Cannot allocate memory for lpNew!\n");
cmd_free(List);
return 1;
}

102
base/shell/cmd/history.c
View file

@ -48,16 +48,16 @@ typedef struct tagHISTORY
LPTSTR string;
} HIST_ENTRY, * LPHIST_ENTRY;
static INT size, max_size=100;
static INT size, max_size = 100;
static LPHIST_ENTRY Top;
static LPHIST_ENTRY Bottom;
static LPHIST_ENTRY Top = NULL;
static LPHIST_ENTRY Bottom = NULL;
static LPHIST_ENTRY curr_ptr=0;
static LPHIST_ENTRY curr_ptr = NULL;
VOID InitHistory(VOID);
VOID History_move_to_bottom(VOID);
VOID History (INT dir, LPTSTR commandline);
VOID History(INT dir, LPTSTR commandline);
VOID CleanHistory(VOID);
VOID History_del_current_entry(LPTSTR str);
@ -68,7 +68,7 @@ static VOID add_at_bottom(LPTSTR string);
VOID set_size(INT new_size);
INT CommandHistory (LPTSTR param)
INT CommandHistory(LPTSTR param)
{
LPTSTR tmp;
INT tmp_int;
@ -120,6 +120,8 @@ INT CommandHistory (LPTSTR param)
VOID set_size(INT new_size)
{
ASSERT(Top && Bottom);
while (new_size<size)
del(Top->prev);
@ -129,10 +131,22 @@ VOID set_size(INT new_size)
VOID InitHistory(VOID)
{
size=0;
size = 0;
Top = cmd_alloc(sizeof(HIST_ENTRY));
if (!Top)
{
WARN("Cannot allocate memory for Top!\n");
return;
}
Bottom = cmd_alloc(sizeof(HIST_ENTRY));
if (!Bottom)
{
WARN("Cannot allocate memory for Bottom!\n");
cmd_free(Top);
Top = NULL;
return;
}
Top->prev = Bottom;
Top->next = NULL;
@ -142,13 +156,15 @@ VOID InitHistory(VOID)
Bottom->next = Top;
Bottom->string = NULL;
curr_ptr=Bottom;
curr_ptr = Bottom;
}
VOID CleanHistory(VOID)
{
while (Bottom->next!=Top)
ASSERT(Top && Bottom);
while (Bottom->next != Top)
del(Bottom->next);
cmd_free(Top);
@ -160,14 +176,16 @@ VOID History_del_current_entry(LPTSTR str)
{
LPHIST_ENTRY tmp;
ASSERT(Top && Bottom);
if (size == 0)
return;
if (curr_ptr == Bottom)
curr_ptr=Bottom->next;
curr_ptr = Bottom->next;
if (curr_ptr == Top)
curr_ptr=Top->prev;
curr_ptr = Top->prev;
tmp = curr_ptr;
@ -180,6 +198,8 @@ VOID History_del_current_entry(LPTSTR str)
static
VOID del(LPHIST_ENTRY item)
{
ASSERT(Top && Bottom);
if (item==NULL || item==Top || item==Bottom)
{
TRACE ("del in " __FILE__ ": returning\n"
@ -206,8 +226,10 @@ VOID add_at_bottom(LPTSTR string)
{
LPHIST_ENTRY tmp;
ASSERT(Top && Bottom);
/*delete first entry if maximum number of entries is reached*/
while(size>=max_size)
while (size>=max_size)
del(Top->prev);
while (_istspace(*string))
@ -218,23 +240,37 @@ VOID add_at_bottom(LPTSTR string)
/*if new entry is the same than the last do not add it*/
if (size)
{
if (_tcscmp(string,Bottom->next->string)==0)
return;
}
/*fill bottom with string, it will become Bottom->next*/
Bottom->string=cmd_alloc((_tcslen(string)+1)*sizeof(TCHAR));
/*create new empty Bottom*/
tmp = cmd_alloc(sizeof(HIST_ENTRY));
if (!tmp)
{
WARN("Cannot allocate memory for new Bottom!\n");
return;
}
/*fill old bottom with string, it will become new Bottom->next*/
Bottom->string = cmd_alloc((_tcslen(string)+1)*sizeof(TCHAR));
if (!Bottom->string)
{
WARN("Cannot allocate memory for Bottom->string!\n");
cmd_free(tmp);
return;
}
_tcscpy(Bottom->string,string);
/*save Bottom value*/
tmp=Bottom;
tmp->next = Bottom;
tmp->prev = NULL;
tmp->string = NULL;
/*create new void Bottom*/
Bottom=cmd_alloc(sizeof(HIST_ENTRY));
Bottom->next=tmp;
Bottom->prev=NULL;
Bottom->string=NULL;
Bottom->prev = tmp;
tmp->prev=Bottom;
/*save the new Bottom value*/
Bottom = tmp;
/*set new size*/
size++;
@ -243,13 +279,17 @@ VOID add_at_bottom(LPTSTR string)
VOID History_move_to_bottom(VOID)
{
curr_ptr=Bottom;
ASSERT(Top && Bottom);
curr_ptr = Bottom;
}
LPCTSTR PeekHistory(INT dir)
{
LPHIST_ENTRY entry = curr_ptr;
ASSERT(Top && Bottom);
if (dir == 0)
return NULL;
@ -283,12 +323,14 @@ LPCTSTR PeekHistory(INT dir)
return entry->string;
}
VOID History (INT dir, LPTSTR commandline)
VOID History(INT dir, LPTSTR commandline)
{
ASSERT(Top && Bottom);
if (dir==0)
{
add_at_bottom(commandline);
curr_ptr=Bottom;
curr_ptr = Bottom;
return;
}
@ -303,9 +345,9 @@ VOID History (INT dir, LPTSTR commandline)
if (curr_ptr->next==Top || curr_ptr==Top)
{
#ifdef WRAP_HISTORY
curr_ptr=Bottom;
curr_ptr = Bottom;
#else
curr_ptr=Top;
curr_ptr = Top;
commandline[0]=_T('\0');
return;
#endif
@ -321,15 +363,15 @@ VOID History (INT dir, LPTSTR commandline)
if (curr_ptr->prev==Bottom || curr_ptr==Bottom)
{
#ifdef WRAP_HISTORY
curr_ptr=Top;
curr_ptr = Top;
#else
curr_ptr=Bottom;
curr_ptr = Bottom;
commandline[0]=_T('\0');
return;
#endif
}
curr_ptr=curr_ptr->prev;
curr_ptr = curr_ptr->prev;
if (curr_ptr->string)
_tcscpy(commandline,curr_ptr->string);
}

22
base/shell/cmd/misc.c
View file

@ -188,18 +188,20 @@ BOOL add_entry (LPINT ac, LPTSTR **arg, LPCTSTR entry)
LPTSTR *oldarg;
q = cmd_alloc ((_tcslen(entry) + 1) * sizeof (TCHAR));
if (NULL == q)
if (!q)
{
WARN("Cannot allocate memory for q!\n");
return FALSE;
}
_tcscpy (q, entry);
oldarg = *arg;
*arg = cmd_realloc (oldarg, (*ac + 2) * sizeof (LPTSTR));
if (NULL == *arg)
if (!*arg)
{
cmd_free (q);
WARN("Cannot reallocate memory for arg!\n");
*arg = oldarg;
cmd_free (q);
return FALSE;
}
@ -222,8 +224,9 @@ static BOOL expand (LPINT ac, LPTSTR **arg, LPCTSTR pattern)
if (NULL != pathend)
{
dirpart = cmd_alloc((pathend - pattern + 2) * sizeof(TCHAR));
if (NULL == dirpart)
if (!dirpart)
{
WARN("Cannot allocate memory for dirpart!\n");
return FALSE;
}
memcpy(dirpart, pattern, pathend - pattern + 1);
@ -241,8 +244,9 @@ static BOOL expand (LPINT ac, LPTSTR **arg, LPCTSTR pattern)
if (NULL != dirpart)
{
fullname = cmd_alloc((_tcslen(dirpart) + _tcslen(FindData.cFileName) + 1) * sizeof(TCHAR));
if (NULL == fullname)
if (!fullname)
{
WARN("Cannot allocate memory for fullname!\n");
ok = FALSE;
}
else
@ -286,7 +290,10 @@ LPTSTR *split (LPTSTR s, LPINT args, BOOL expand_wildcards, BOOL handle_plus)
arg = cmd_alloc (sizeof (LPTSTR));
if (!arg)
{
WARN("Cannot allocate memory for arg!\n");
return NULL;
}
*arg = NULL;
ac = 0;
@ -333,6 +340,7 @@ LPTSTR *split (LPTSTR s, LPINT args, BOOL expand_wildcards, BOOL handle_plus)
q = cmd_alloc (((len = s - start) + 1) * sizeof (TCHAR));
if (!q)
{
WARN("Cannot allocate memory for q!\n");
return NULL;
}
memcpy (q, start, len * sizeof (TCHAR));
@ -381,7 +389,10 @@ LPTSTR *splitspace (LPTSTR s, LPINT args)
arg = cmd_alloc (sizeof (LPTSTR));
if (!arg)
{
WARN("Cannot allocate memory for arg!\n");
return NULL;
}
*arg = NULL;
ac = 0;
@ -409,6 +420,7 @@ LPTSTR *splitspace (LPTSTR s, LPINT args)
q = cmd_alloc (((len = s - start) + 1) * sizeof (TCHAR));
if (!q)
{
WARN("Cannot allocate memory for q!\n");
return NULL;
}
memcpy (q, start, len * sizeof (TCHAR));

144
base/shell/cmd/parser.c
View file

@ -60,7 +60,7 @@ static TCHAR ParseChar(void)
TCHAR Char;
if (bParseError)
return CurChar = 0;
return (CurChar = 0);
restart:
/*
@ -90,7 +90,7 @@ restart:
}
}
}
return CurChar = Char;
return (CurChar = Char);
}
static void ParseError(void)
@ -272,6 +272,11 @@ static BOOL ParseRedirection(REDIRECTION **List)
}
Redir = cmd_alloc(FIELD_OFFSET(REDIRECTION, Filename[_tcslen(Tok) + 1]));
if (!Redir)
{
WARN("Cannot allocate memory for Redir!\n");
goto fail;
}
Redir->Next = NULL;
Redir->OldHandle = INVALID_HANDLE_VALUE;
Redir->Number = Number;
@ -293,7 +298,15 @@ static PARSED_COMMAND *ParseCommandOp(int OpType);
static PARSED_COMMAND *ParseBlock(REDIRECTION *RedirList)
{
PARSED_COMMAND *Cmd, *Sub, **NextPtr;
Cmd = cmd_alloc(sizeof(PARSED_COMMAND));
if (!Cmd)
{
WARN("Cannot allocate memory for Cmd!\n");
ParseError();
FreeRedirection(RedirList);
return NULL;
}
Cmd->Type = C_BLOCK;
Cmd->Next = NULL;
Cmd->Subcommands = NULL;
@ -340,8 +353,16 @@ static PARSED_COMMAND *ParseBlock(REDIRECTION *RedirList)
/* Parse an IF statement */
static PARSED_COMMAND *ParseIf(void)
{
PARSED_COMMAND *Cmd = cmd_alloc(sizeof(PARSED_COMMAND));
int Type;
PARSED_COMMAND *Cmd;
Cmd = cmd_alloc(sizeof(PARSED_COMMAND));
if (!Cmd)
{
WARN("Cannot allocate memory for Cmd!\n");
ParseError();
return NULL;
}
memset(Cmd, 0, sizeof(PARSED_COMMAND));
Cmd->Type = C_IF;
@ -432,10 +453,17 @@ condition_done:
*/
static PARSED_COMMAND *ParseFor(void)
{
PARSED_COMMAND *Cmd = cmd_alloc(sizeof(PARSED_COMMAND));
PARSED_COMMAND *Cmd;
TCHAR List[CMDLINE_LENGTH];
TCHAR *Pos = List;
Cmd = cmd_alloc(sizeof(PARSED_COMMAND));
if (!Cmd)
{
WARN("Cannot allocate memory for Cmd!\n");
ParseError();
return NULL;
}
memset(Cmd, 0, sizeof(PARSED_COMMAND));
Cmd->Type = C_FOR;
@ -609,6 +637,13 @@ static DECLSPEC_NOINLINE PARSED_COMMAND *ParseCommandPart(REDIRECTION *RedirList
*Pos++ = _T('\0');
Cmd = cmd_alloc(FIELD_OFFSET(PARSED_COMMAND, Command.First[Pos - ParsedLine]));
if (!Cmd)
{
WARN("Cannot allocate memory for Cmd!\n");
ParseError();
FreeRedirection(RedirList);
return NULL;
}
Cmd->Type = C_COMMAND;
Cmd->Next = NULL;
Cmd->Subcommands = NULL;
@ -647,6 +682,12 @@ static PARSED_COMMAND *ParsePrimary(void)
PARSED_COMMAND *Cmd;
ParseChar();
Cmd = cmd_alloc(sizeof(PARSED_COMMAND));
if (!Cmd)
{
WARN("Cannot allocate memory for Cmd!\n");
ParseError();
return NULL;
}
Cmd->Type = C_QUIET;
Cmd->Next = NULL;
/* @ acts like a unary operator with low precedence,
@ -702,6 +743,14 @@ static PARSED_COMMAND *ParseCommandOp(int OpType)
}
Cmd = cmd_alloc(sizeof(PARSED_COMMAND));
if (!Cmd)
{
WARN("Cannot allocate memory for Cmd!\n");
ParseError();
FreeCommand(Left);
FreeCommand(Right);
return NULL;
}
Cmd->Type = OpType;
Cmd->Next = NULL;
Cmd->Redirections = NULL;
@ -840,8 +889,10 @@ EchoCommand(PARSED_COMMAND *Cmd)
for (Redir = Cmd->Redirections; Redir; Redir = Redir->Next)
{
if (SubstituteForVars(Redir->Filename, Buf))
{
ConOutPrintf(_T(" %c%s%s"), _T('0') + Redir->Number,
RedirString[Redir->Mode], Buf);
RedirString[Redir->Mode], Buf);
}
}
}
@ -862,19 +913,27 @@ Unparse(PARSED_COMMAND *Cmd, TCHAR *Out, TCHAR *OutEnd)
* overflowing the supplied buffer, define some helper macros to make
* this less painful.
*/
#define CHAR(Char) { \
#define CHAR(Char) \
do { \
if (Out == OutEnd) return NULL; \
*Out++ = Char; }
#define STRING(String) { \
*Out++ = Char; \
} while (0)
#define STRING(String) \
do { \
if (Out + _tcslen(String) > OutEnd) return NULL; \
Out = _stpcpy(Out, String); }
#define PRINTF(Format, ...) { \
Out = _stpcpy(Out, String); \
} while (0)
#define PRINTF(Format, ...) \
do { \
UINT Len = _sntprintf(Out, OutEnd - Out, Format, __VA_ARGS__); \
if (Len > (UINT)(OutEnd - Out)) return NULL; \
Out += Len; }
#define RECURSE(Subcommand) { \
Out += Len; \
} while (0)
#define RECURSE(Subcommand) \
do { \
Out = Unparse(Subcommand, Out, OutEnd); \
if (!Out) return NULL; }
if (!Out) return NULL; \
} while (0)
switch (Cmd->Type)
{
@ -883,70 +942,71 @@ Unparse(PARSED_COMMAND *Cmd, TCHAR *Out, TCHAR *OutEnd)
* Windows doesn't bother escaping them, so for compatibility
* we probably shouldn't do it either */
if (!SubstituteForVars(Cmd->Command.First, Buf)) return NULL;
STRING(Buf)
STRING(Buf);
if (!SubstituteForVars(Cmd->Command.Rest, Buf)) return NULL;
STRING(Buf)
STRING(Buf);
break;
case C_QUIET:
CHAR(_T('@'))
RECURSE(Cmd->Subcommands)
CHAR(_T('@'));
RECURSE(Cmd->Subcommands);
break;
case C_BLOCK:
CHAR(_T('('))
CHAR(_T('('));
for (Sub = Cmd->Subcommands; Sub; Sub = Sub->Next)
{
RECURSE(Sub)
RECURSE(Sub);
if (Sub->Next)
CHAR(_T('&'))
CHAR(_T('&'));
}
CHAR(_T(')'))
CHAR(_T(')'));
break;
case C_MULTI:
case C_IFFAILURE:
case C_IFSUCCESS:
case C_PIPE:
Sub = Cmd->Subcommands;
RECURSE(Sub)
PRINTF(_T(" %s "), OpString[Cmd->Type - C_OP_LOWEST])
RECURSE(Sub->Next)
RECURSE(Sub);
PRINTF(_T(" %s "), OpString[Cmd->Type - C_OP_LOWEST]);
RECURSE(Sub->Next);
break;
case C_IF:
STRING(_T("if"))
STRING(_T("if"));
if (Cmd->If.Flags & IFFLAG_IGNORECASE)
STRING(_T(" /I"))
STRING(_T(" /I"));
if (Cmd->If.Flags & IFFLAG_NEGATE)
STRING(_T(" not"))
STRING(_T(" not"));
if (Cmd->If.LeftArg && SubstituteForVars(Cmd->If.LeftArg, Buf))
PRINTF(_T(" %s"), Buf)
PRINTF(_T(" %s"), Buf);
PRINTF(_T(" %s"), IfOperatorString[Cmd->If.Operator]);
if (!SubstituteForVars(Cmd->If.RightArg, Buf)) return NULL;
PRINTF(_T(" %s "), Buf)
PRINTF(_T(" %s "), Buf);
Sub = Cmd->Subcommands;
RECURSE(Sub)
RECURSE(Sub);
if (Sub->Next)
{
STRING(_T(" else "))
RECURSE(Sub->Next)
STRING(_T(" else "));
RECURSE(Sub->Next);
}
break;
case C_FOR:
STRING(_T("for"))
if (Cmd->For.Switches & FOR_DIRS) STRING(_T(" /D"))
if (Cmd->For.Switches & FOR_F) STRING(_T(" /F"))
if (Cmd->For.Switches & FOR_LOOP) STRING(_T(" /L"))
if (Cmd->For.Switches & FOR_RECURSIVE) STRING(_T(" /R"))
STRING(_T("for"));
if (Cmd->For.Switches & FOR_DIRS) STRING(_T(" /D"));
if (Cmd->For.Switches & FOR_F) STRING(_T(" /F"));
if (Cmd->For.Switches & FOR_LOOP) STRING(_T(" /L"));
if (Cmd->For.Switches & FOR_RECURSIVE) STRING(_T(" /R"));
if (Cmd->For.Params)
PRINTF(_T(" %s"), Cmd->For.Params)
PRINTF(_T(" %%%c in (%s) do "), Cmd->For.Variable, Cmd->For.List)
RECURSE(Cmd->Subcommands)
PRINTF(_T(" %s"), Cmd->For.Params);
PRINTF(_T(" %%%c in (%s) do "), Cmd->For.Variable, Cmd->For.List);
RECURSE(Cmd->Subcommands);
break;
}
for (Redir = Cmd->Redirections; Redir; Redir = Redir->Next)
{
if (!SubstituteForVars(Redir->Filename, Buf)) return NULL;
if (!SubstituteForVars(Redir->Filename, Buf))
return NULL;
PRINTF(_T(" %c%s%s"), _T('0') + Redir->Number,
RedirString[Redir->Mode], Buf)
RedirString[Redir->Mode], Buf);
}
return Out;
}

9
base/shell/cmd/path.c
View file

@ -50,6 +50,12 @@ INT cmd_path (LPTSTR param)
LPTSTR pszBuffer;
pszBuffer = (LPTSTR)cmd_alloc (ENV_BUFFER_SIZE * sizeof(TCHAR));
if (!pszBuffer)
{
WARN("Cannot allocate memory for pszBuffer!\n");
return 1;
}
dwBuffer = GetEnvironmentVariable (_T("PATH"), pszBuffer, ENV_BUFFER_SIZE);
if (dwBuffer == 0)
{
@ -61,8 +67,9 @@ INT cmd_path (LPTSTR param)
{
LPTSTR pszOldBuffer = pszBuffer;
pszBuffer = (LPTSTR)cmd_realloc (pszBuffer, dwBuffer * sizeof (TCHAR));
if (pszBuffer == NULL)
if (!pszBuffer)
{
WARN("Cannot reallocate memory for pszBuffer!\n");
cmd_free(pszOldBuffer);
return 1;
}

1
base/shell/cmd/setlocal.c
View file

@ -49,6 +49,7 @@ INT cmd_setlocal(LPTSTR param)
Saved = cmd_alloc(sizeof(SETLOCAL));
if (!Saved)
{
WARN("Cannot allocate memory for Saved!\n");
error_out_of_memory();
return 1;
}

3
base/shell/cmd/start.c
View file

@ -178,8 +178,9 @@ INT cmd_start (LPTSTR Rest)
/* get comspec */
comspec = cmd_alloc ( MAX_PATH * sizeof(TCHAR));
if (comspec == NULL)
if (!comspec)
{
WARN("Cannot allocate memory for start comspec!\n");
error_out_of_memory();
return 1;
}

18
base/shell/cmd/where.c
View file

@ -149,13 +149,20 @@ SearchForExecutable (LPCTSTR pFileName, LPTSTR pFullName)
/* load environment variable PATHEXT */
pszPathExt = (LPTSTR)cmd_alloc (ENV_BUFFER_SIZE * sizeof(TCHAR));
if (!pszPathExt)
{
WARN("Cannot allocate memory for pszPathExt!\n");
return FALSE;
}
dwBuffer = GetEnvironmentVariable (_T("PATHEXT"), pszPathExt, ENV_BUFFER_SIZE);
if (dwBuffer > ENV_BUFFER_SIZE)
{
LPTSTR pszOldPathExt = pszPathExt;
pszPathExt = (LPTSTR)cmd_realloc (pszPathExt, dwBuffer * sizeof (TCHAR));
if (pszPathExt == NULL)
if (!pszPathExt)
{
WARN("Cannot reallocate memory for pszPathExt!\n");
cmd_free(pszOldPathExt);
return FALSE;
}
@ -187,13 +194,20 @@ SearchForExecutable (LPCTSTR pFileName, LPTSTR pFullName)
/* load environment variable PATH into buffer */
pszPath = (LPTSTR)cmd_alloc (ENV_BUFFER_SIZE * sizeof(TCHAR));
if (!pszPath)
{
WARN("Cannot allocate memory for pszPath!\n");
return FALSE;
}
dwBuffer = GetEnvironmentVariable (_T("PATH"), pszPath, ENV_BUFFER_SIZE);
if (dwBuffer > ENV_BUFFER_SIZE)
{
LPTSTR pszOldPath = pszPath;
pszPath = (LPTSTR)cmd_realloc (pszPath, dwBuffer * sizeof (TCHAR));
if (pszPath == NULL)
if (!pszPath)
{
WARN("Cannot reallocate memory for pszPath!\n");
cmd_free(pszOldPath);
cmd_free(pszPathExt);
return FALSE;