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authorRuiyu Ni <ruiyu.ni@intel.com>2016-07-13 15:47:16 +0800
committerRuiyu Ni <ruiyu.ni@intel.com>2016-07-18 10:55:53 +0800
commit581c03896cf88e875f620f6ea9d90ecb2b941c18 (patch)
tree00b8f16a9ad615a80edd1db720535504955e4404 /ShellPkg
parent59b7dbac4ea075313af989cc20b71d44fdc7829a (diff)
downloadedk2-platforms-581c03896cf88e875f620f6ea9d90ecb2b941c18.tar.xz
ShellPkg/If: Handle memory allocation failure
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Diffstat (limited to 'ShellPkg')
-rw-r--r--ShellPkg/Library/UefiShellLevel1CommandsLib/If.c95
1 files changed, 53 insertions, 42 deletions
diff --git a/ShellPkg/Library/UefiShellLevel1CommandsLib/If.c b/ShellPkg/Library/UefiShellLevel1CommandsLib/If.c
index dc96bffde7..e4dbe01090 100644
--- a/ShellPkg/Library/UefiShellLevel1CommandsLib/If.c
+++ b/ShellPkg/Library/UefiShellLevel1CommandsLib/If.c
@@ -2,7 +2,7 @@
Main file for If and else shell level 1 function.
(C) Copyright 2013-2015 Hewlett-Packard Development Company, L.P.<BR>
- Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -42,15 +42,17 @@ typedef enum {
@param[in, out] Statement The current remaining statement.
@param[in] Fragment The current fragment.
+ @param[out] Match TRUE when there is another Fragment in Statement,
+ FALSE otherwise.
- @retval FALSE There is not another fragment.
- @retval TRUE There is another fragment.
+ @retval EFI_SUCCESS The match operation is performed successfully.
+ @retval EFI_OUT_OF_RESOURCES Out of resources.
**/
-BOOLEAN
-EFIAPI
+EFI_STATUS
IsNextFragment (
IN OUT CONST CHAR16 **Statement,
- IN CONST CHAR16 *Fragment
+ IN CONST CHAR16 *Fragment,
+ OUT BOOLEAN *Match
)
{
CHAR16 *Tester;
@@ -58,7 +60,9 @@ IsNextFragment (
Tester = NULL;
Tester = StrnCatGrow(&Tester, NULL, *Statement, StrLen(Fragment));
- ASSERT(Tester != NULL);
+ if (Tester == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
Tester[StrLen(Fragment)] = CHAR_NULL;
if (gUnicodeCollation->StriColl(
gUnicodeCollation,
@@ -71,11 +75,12 @@ IsNextFragment (
while (*Statement[0] == L' ') {
(*Statement)++;
}
- FreePool(Tester);
- return (TRUE);
+ *Match = TRUE;
+ } else {
+ *Match = FALSE;
}
FreePool(Tester);
- return (FALSE);
+ return EFI_SUCCESS;
}
/**
@@ -365,6 +370,7 @@ ProcessStatement (
CHAR16 *Compare2;
CHAR16 HexString[20];
CHAR16 *TempSpot;
+ BOOLEAN Match;
ASSERT((END_TAG_TYPE)OperatorToUse != EndTagThen);
@@ -372,7 +378,7 @@ ProcessStatement (
BinOp = OperatorMax;
OperationResult = FALSE;
StatementWalker = gEfiShellParametersProtocol->Argv[StartParameterNumber];
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"not")) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"not", &Match)) && Match) {
NotPresent = TRUE;
StatementWalker = gEfiShellParametersProtocol->Argv[++StartParameterNumber];
} else {
@@ -382,16 +388,19 @@ ProcessStatement (
//
// now check for 'boolfunc' operators
//
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"isint")) {
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && StatementWalker[StrLen(StatementWalker)-1] == L')') {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"isint", &Match)) && Match) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(", &Match)) && Match
+ && StatementWalker[StrLen(StatementWalker)-1] == L')') {
StatementWalker[StrLen(StatementWalker)-1] = CHAR_NULL;
OperationResult = ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE);
} else {
Status = EFI_INVALID_PARAMETER;
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"isint");
}
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"exists") || IsNextFragment((CONST CHAR16**)(&StatementWalker), L"exist")) {
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && StatementWalker[StrLen(StatementWalker)-1] == L')') {
+ } else if ((!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"exists", &Match)) && Match) ||
+ (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"exist", &Match)) && Match)) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(", &Match)) && Match &&
+ StatementWalker[StrLen(StatementWalker)-1] == L')') {
StatementWalker[StrLen(StatementWalker)-1] = CHAR_NULL;
//
// is what remains a file in CWD???
@@ -403,8 +412,9 @@ ProcessStatement (
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"exist(s)");
Status = EFI_INVALID_PARAMETER;
}
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"available")) {
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && StatementWalker[StrLen(StatementWalker)-1] == L')') {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"available", &Match)) && Match) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(", &Match)) && Match &&
+ StatementWalker[StrLen(StatementWalker)-1] == L')') {
StatementWalker[StrLen(StatementWalker)-1] = CHAR_NULL;
//
// is what remains a file in the CWD or path???
@@ -414,8 +424,9 @@ ProcessStatement (
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"available");
Status = EFI_INVALID_PARAMETER;
}
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"profile")) {
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && StatementWalker[StrLen(StatementWalker)-1] == L')') {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"profile", &Match)) && Match) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(", &Match)) && Match &&
+ StatementWalker[StrLen(StatementWalker)-1] == L')') {
//
// Chop off that ')'
//
@@ -440,9 +451,9 @@ ProcessStatement (
// get the first item
//
StatementWalker = gEfiShellParametersProtocol->Argv[StartParameterNumber];
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"efierror")) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"efierror", &Match)) && Match) {
TempSpot = StrStr(StatementWalker, L")");
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && TempSpot != NULL) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(", &Match)) && Match && TempSpot != NULL) {
*TempSpot = CHAR_NULL;
if (ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE)) {
UnicodeSPrint(HexString, sizeof(HexString), L"0x%x", ShellStrToUintn(StatementWalker)|MAX_BIT);
@@ -457,9 +468,9 @@ ProcessStatement (
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"efierror");
Status = EFI_INVALID_PARAMETER;
}
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"pierror")) {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"pierror", &Match)) && Match) {
TempSpot = StrStr(StatementWalker, L")");
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && TempSpot != NULL) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(", &Match)) && Match && TempSpot != NULL) {
*TempSpot = CHAR_NULL;
if (ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE)) {
UnicodeSPrint(HexString, sizeof(HexString), L"0x%x", ShellStrToUintn(StatementWalker)|MAX_BIT|(MAX_BIT>>2));
@@ -474,9 +485,9 @@ ProcessStatement (
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"pierror");
Status = EFI_INVALID_PARAMETER;
}
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"oemerror")) {
+ } else if (!EFI_ERROR (IsNextFragment ((CONST CHAR16**)(&StatementWalker), L"oemerror", &Match)) && Match) {
TempSpot = StrStr(StatementWalker, L")");
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && TempSpot != NULL) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(", &Match)) && Match && TempSpot != NULL) {
TempSpot = CHAR_NULL;
if (ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE)) {
UnicodeSPrint(HexString, sizeof(HexString), L"0x%x", ShellStrToUintn(StatementWalker)|MAX_BIT|(MAX_BIT>>1));
@@ -509,27 +520,27 @@ ProcessStatement (
//
ASSERT(StartParameterNumber+1<EndParameterNumber);
StatementWalker = gEfiShellParametersProtocol->Argv[StartParameterNumber+1];
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"gt")) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"gt", &Match)) && Match) {
BinOp = OperatorGreaterThan;
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"lt")) {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"lt", &Match)) && Match) {
BinOp = OperatorLessThan;
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"eq")) {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"eq", &Match)) && Match) {
BinOp = OperatorEqual;
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ne")) {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ne", &Match)) && Match) {
BinOp = OperatorNotEqual;
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ge")) {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ge", &Match)) && Match) {
BinOp = OperatorGreatorOrEqual;
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"le")) {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"le", &Match)) && Match) {
BinOp = OperatorLessOrEqual;
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"==")) {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"==", &Match)) && Match) {
BinOp = OperatorEqual;
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ugt")) {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ugt", &Match)) && Match) {
BinOp = OperatorUnisgnedGreaterThan;
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ult")) {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ult", &Match)) && Match) {
BinOp = OperatorUnsignedLessThan;
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"uge")) {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"uge", &Match)) && Match) {
BinOp = OperatorUnsignedGreaterOrEqual;
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ule")) {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ule", &Match)) && Match) {
BinOp = OperatorUnsignedLessOrEqual;
} else {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_INVALID_BINOP), gShellLevel1HiiHandle, StatementWalker);
@@ -541,9 +552,9 @@ ProcessStatement (
//
ASSERT(StartParameterNumber+2<=EndParameterNumber);
StatementWalker = gEfiShellParametersProtocol->Argv[StartParameterNumber+2];
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"efierror")) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"efierror", &Match)) && Match) {
TempSpot = StrStr(StatementWalker, L")");
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && TempSpot != NULL) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(", &Match)) && Match && TempSpot != NULL) {
TempSpot = CHAR_NULL;
if (ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE)) {
UnicodeSPrint(HexString, sizeof(HexString), L"0x%x", ShellStrToUintn(StatementWalker)|MAX_BIT);
@@ -561,9 +572,9 @@ ProcessStatement (
//
// can this be collapsed into the above?
//
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"pierror")) {
+ } else if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"pierror", &Match)) && Match) {
TempSpot = StrStr(StatementWalker, L")");
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && TempSpot != NULL) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(", &Match)) && Match && TempSpot != NULL) {
TempSpot = CHAR_NULL;
if (ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE)) {
UnicodeSPrint(HexString, sizeof(HexString), L"0x%x", ShellStrToUintn(StatementWalker)|MAX_BIT|(MAX_BIT>>2));
@@ -578,9 +589,9 @@ ProcessStatement (
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"pierror");
Status = EFI_INVALID_PARAMETER;
}
- } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"oemerror")) {
+ } else if (!EFI_ERROR (IsNextFragment ((CONST CHAR16**)(&StatementWalker), L"oemerror", &Match)) && Match) {
TempSpot = StrStr(StatementWalker, L")");
- if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && TempSpot != NULL) {
+ if (!EFI_ERROR (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(", &Match)) && Match && TempSpot != NULL) {
TempSpot = CHAR_NULL;
if (ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE)) {
UnicodeSPrint(HexString, sizeof(HexString), L"0x%x", ShellStrToUintn(StatementWalker)|MAX_BIT|(MAX_BIT>>1));