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ShellPkg/for: Fix potential null pointer deference
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1 /** @file
2 Main file for Reconnect shell Driver1 function.
3
4 Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>
5 (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
6 (C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>
7 This program and the accompanying materials
8 are licensed and made available under the terms and conditions of the BSD License
9 which accompanies this distribution. The full text of the license may be found at
10 http://opensource.org/licenses/bsd-license.php
11
12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
14
15 **/
16
17 #include "UefiShellDriver1CommandsLib.h"
18
19 STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
20 {L"-r", TypeFlag},
21 {NULL, TypeMax}
22 };
23
24 /**
25 Connect all the possible console devices.
26
27 **/
28 VOID
29 ConnectAllConsoles (
30 VOID
31 )
32 {
33 ShellConnectFromDevPaths(L"ConInDev");
34 ShellConnectFromDevPaths(L"ConOutDev");
35 ShellConnectFromDevPaths(L"ErrOutDev");
36
37 ShellConnectFromDevPaths(L"ErrOut");
38 ShellConnectFromDevPaths(L"ConIn");
39 ShellConnectFromDevPaths(L"ConOut");
40 }
41
42
43 /**
44 Function for 'reconnect' command.
45
46 @param[in] ImageHandle Handle to the Image (NULL if Internal).
47 @param[in] SystemTable Pointer to the System Table (NULL if Internal).
48 **/
49 SHELL_STATUS
50 EFIAPI
51 ShellCommandRunReconnect (
52 IN EFI_HANDLE ImageHandle,
53 IN EFI_SYSTEM_TABLE *SystemTable
54 )
55 {
56 SHELL_STATUS ShellStatus;
57 LIST_ENTRY *Package;
58 CHAR16 *ProblemParam;
59 EFI_STATUS Status;
60
61 gInReconnect = TRUE;
62 ShellStatus = SHELL_SUCCESS;
63
64 //
65 // initialize the shell lib (we must be in non-auto-init...)
66 //
67 Status = ShellInitialize();
68 ASSERT_EFI_ERROR(Status);
69
70 Status = CommandInit();
71 ASSERT_EFI_ERROR(Status);
72
73 //
74 // parse the command line
75 //
76 Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
77 if (EFI_ERROR(Status)) {
78 if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
79 ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellDriver1HiiHandle, L"reconnect", ProblemParam);
80 FreePool(ProblemParam);
81 ShellStatus = SHELL_INVALID_PARAMETER;
82 } else {
83 ASSERT(FALSE);
84 }
85 } else {
86 ShellStatus = ShellCommandRunDisconnect(ImageHandle, SystemTable);
87 if (ShellStatus == SHELL_SUCCESS) {
88 if (ShellCommandLineGetFlag(Package, L"-r")) {
89 ConnectAllConsoles();
90 }
91 ShellStatus = ShellCommandRunConnect(ImageHandle, SystemTable);
92 }
93 }
94
95 gInReconnect = FALSE;
96
97 return (ShellStatus);
98 }
99