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

    87             | FORMAT_MESSAGE_FROM_SYSTEM

    88             | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, error,

    89             MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),

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

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

    92         LocalFree(message);

    93     }

    94 }

    95 

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

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

    98 

    99 bool ChangeIcon(wstring iconTarget, wstring launcher) {

   100     WORD language = MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT);

   101 

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

   103             OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);

   104     if (icon == INVALID_HANDLE_VALUE) {

   105         PrintError();

   106         return false;

   107     }

   108 

   109     // Reading .ICO file

   110     WORD idReserved, idType, idCount;

   111 

   112     DWORD dwBytesRead;

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

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

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

   116 

   117     LPICONDIR lpid = (LPICONDIR) malloc(

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

   119     if (lpid == NULL) {

   120         CloseHandle(icon);

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

   122         return false;

   123     }

   124 

   125     lpid->idReserved = idReserved;

   126     lpid->idType = idType;

   127     lpid->idCount = idCount;

   128 

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

   130             &dwBytesRead, NULL);

   131 

   132     LPGRPICONDIR lpgid = (LPGRPICONDIR) malloc(

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

   134     if (lpid == NULL) {

   135         CloseHandle(icon);

   136         free(lpid);

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

   138         return false;

   139     }

   140 

   141     lpgid->idReserved = idReserved;

   142     lpgid->idType = idType;

   143     lpgid->idCount = idCount;

   144 

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

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

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

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

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

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

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

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

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

   154     }

   155 

   156     // Store images in .EXE

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

   158     if (update == NULL) {

   159         free(lpid);

   160         free(lpgid);

   161         CloseHandle(icon);

   162         PrintError();

   163         return false;

   164     }

   165 

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

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

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

   169                 NULL, FILE_BEGIN);

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

   171                 &dwBytesRead, NULL);

   172         if (!UpdateResource(update, RT_ICON,

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

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

   175             free(lpBuffer);

   176             free(lpid);

   177             free(lpgid);

   178             CloseHandle(icon);

   179             PrintError();

   180             return false;

   181         }

   182         free(lpBuffer);

   183     }

   184 

   185     free(lpid);

   186     CloseHandle(icon);

   187 

   188     if (!UpdateResource(update, RT_GROUP_ICON, MAKEINTRESOURCE(1),

   189             language, &lpgid[0], (sizeof (WORD) * 3)

   190             + (sizeof (GRPICONDIRENTRY) * lpgid->idCount))) {

   191         free(lpgid);

   192         PrintError();

   193         return false;

   194     }

   195 

   196     free(lpgid);

   197 

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

   199         PrintError();

   200         return false;

   201     }

   202 

   203     return true;

   204 }