1 /*

     2  * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 #include <stdio.h>

    27 #include <windows.h>

    28 #include <stdlib.h>

    29 #include <string>

    30 #include <malloc.h>

    31 

    32 using namespace std;

    33 

    34 // http://msdn.microsoft.com/en-us/library/ms997538.aspx

    35 

    36 typedef struct _ICONDIRENTRY {

    37     BYTE bWidth;

    38     BYTE bHeight;

    39     BYTE bColorCount;

    40     BYTE bReserved;

    41     WORD wPlanes;

    42     WORD wBitCount;

    43     DWORD dwBytesInRes;

    44     DWORD dwImageOffset;

    45 } ICONDIRENTRY, * LPICONDIRENTRY;

    46 

    47 typedef struct _ICONDIR {

    48     WORD idReserved;

    49     WORD idType;

    50     WORD idCount;

    51     ICONDIRENTRY idEntries[1];

    52 } ICONDIR, * LPICONDIR;

    53 

    54 // #pragmas are used here to insure that the structure's

    55 // packing in memory matches the packing of the EXE or DLL.

    56 #pragma pack(push)

    57 #pragma pack(2)

    58 

    59 typedef struct _GRPICONDIRENTRY {

    60     BYTE bWidth;

    61     BYTE bHeight;

    62     BYTE bColorCount;

    63     BYTE bReserved;

    64     WORD wPlanes;

    65     WORD wBitCount;

    66     DWORD dwBytesInRes;

    67     WORD nID;

    68 } GRPICONDIRENTRY, * LPGRPICONDIRENTRY;

    69 #pragma pack(pop)

    70 

    71 #pragma pack(push)

    72 #pragma pack(2)

    73 

    74 typedef struct _GRPICONDIR {

    75     WORD idReserved;

    76     WORD idType;

    77     WORD idCount;

    78     GRPICONDIRENTRY idEntries[1];

    79 } GRPICONDIR, * LPGRPICONDIR;

    80 #pragma pack(pop)

    81 

    82 void PrintError() {

    83     LPVOID message = NULL;

    84     DWORD error = GetLastError();

    85 

    86     if (FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |

    87             FORMAT_MESSAGE_IGNORE_INSERTS, NULL, error,

    88             MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),

    89             (LPTSTR) & message, 0, NULL) != 0) {

    90         printf("%S", (LPTSTR) message);

    91         LocalFree(message);

    92     }

    93 }

    94 

    95 // Note: We do not check here that iconTarget is valid icon.

    96 // Java code will already do this for us.

    97 

    98 bool ChangeIcon(wstring iconTarget, wstring launcher) {

    99     WORD language = MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT);

   100 

   101     HANDLE icon = CreateFile(iconTarget.c_str(), GENERIC_READ, 0, NULL,

   102             OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);

   103     if (icon == INVALID_HANDLE_VALUE) {

   104         PrintError();

   105         return false;

   106     }

   107 

   108     // Reading .ICO file

   109     WORD idReserved, idType, idCount;

   110 

   111     DWORD dwBytesRead;

   112     ReadFile(icon, &idReserved, sizeof (WORD), &dwBytesRead, NULL);

   113     ReadFile(icon, &idType, sizeof (WORD), &dwBytesRead, NULL);

   114     ReadFile(icon, &idCount, sizeof (WORD), &dwBytesRead, NULL);

   115 

   116     LPICONDIR lpid = (LPICONDIR) malloc(

   117             sizeof (ICONDIR) + (sizeof (ICONDIRENTRY) * (idCount - 1)));

   118     if (lpid == NULL) {

   119         CloseHandle(icon);

   120         printf("Error: Failed to allocate memory\n");

   121         return false;

   122     }

   123 

   124     lpid->idReserved = idReserved;

   125     lpid->idType = idType;

   126     lpid->idCount = idCount;

   127 

   128     ReadFile(icon, &lpid->idEntries[0], sizeof (ICONDIRENTRY) * lpid->idCount,

   129             &dwBytesRead, NULL);

   130 

   131     LPGRPICONDIR lpgid = (LPGRPICONDIR) malloc(

   132             sizeof (GRPICONDIR) + (sizeof (GRPICONDIRENTRY) * (idCount - 1)));

   133     if (lpid == NULL) {

   134         CloseHandle(icon);

   135         free(lpid);

   136         printf("Error: Failed to allocate memory\n");

   137         return false;

   138     }

   139 

   140     lpgid->idReserved = idReserved;

   141     lpgid->idType = idType;

   142     lpgid->idCount = idCount;

   143 

   144     for (int i = 0; i < lpgid->idCount; i++) {

   145         lpgid->idEntries[i].bWidth = lpid->idEntries[i].bWidth;

   146         lpgid->idEntries[i].bHeight = lpid->idEntries[i].bHeight;

   147         lpgid->idEntries[i].bColorCount = lpid->idEntries[i].bColorCount;

   148         lpgid->idEntries[i].bReserved = lpid->idEntries[i].bReserved;

   149         lpgid->idEntries[i].wPlanes = lpid->idEntries[i].wPlanes;

   150         lpgid->idEntries[i].wBitCount = lpid->idEntries[i].wBitCount;

   151         lpgid->idEntries[i].dwBytesInRes = lpid->idEntries[i].dwBytesInRes;

   152         lpgid->idEntries[i].nID = i + 1;

   153     }

   154 

   155     // Store images in .EXE

   156     HANDLE update = BeginUpdateResource(launcher.c_str(), FALSE);

   157     if (update == NULL) {

   158         free(lpid);

   159         free(lpgid);

   160         CloseHandle(icon);

   161         PrintError();

   162         return false;

   163     }

   164 

   165     for (int i = 0; i < lpid->idCount; i++) {

   166         LPBYTE lpBuffer = (LPBYTE) malloc(lpid->idEntries[i].dwBytesInRes);

   167         SetFilePointer(icon, lpid->idEntries[i].dwImageOffset,

   168                 NULL, FILE_BEGIN);

   169         ReadFile(icon, lpBuffer, lpid->idEntries[i].dwBytesInRes,

   170                 &dwBytesRead, NULL);

   171         if (!UpdateResource(update, RT_ICON,

   172                 MAKEINTRESOURCE(lpgid->idEntries[i].nID),

   173                 language, &lpBuffer[0], lpid->idEntries[i].dwBytesInRes)) {

   174             free(lpBuffer);

   175             free(lpid);

   176             free(lpgid);

   177             CloseHandle(icon);

   178             PrintError();

   179             return false;

   180         }

   181         free(lpBuffer);

   182     }

   183 

   184     free(lpid);

   185     CloseHandle(icon);

   186 

   187     if (!UpdateResource(update, RT_GROUP_ICON,

   188             MAKEINTRESOURCE(1), language, &lpgid[0],

   189             (sizeof (WORD) * 3) + (sizeof (GRPICONDIRENTRY) * lpgid->idCount))) {

   190         free(lpgid);

   191         PrintError();

   192         return false;

   193     }

   194 

   195     free(lpgid);

   196 

   197     if (EndUpdateResource(update, FALSE) == FALSE) {

   198         PrintError();

   199         return false;

   200     }

   201 

   202     return true;

   203 }