1 | /* $Id: RTFsMountpointsEnum-win.cpp 102647 2023-12-20 12:01:26Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - File System, RTFsMountpointsEnum, Windows.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * The contents of this file may alternatively be used under the terms
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26 | * of the Common Development and Distribution License Version 1.0
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27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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28 | * in the VirtualBox distribution, in which case the provisions of the
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29 | * CDDL are applicable instead of those of the GPL.
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30 | *
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31 | * You may elect to license modified versions of this file under the
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32 | * terms and conditions of either the GPL or the CDDL or both.
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33 | *
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34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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35 | */
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36 |
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37 |
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38 | /*********************************************************************************************************************************
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39 | * Header Files *
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40 | *********************************************************************************************************************************/
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41 | #include "internal/iprt.h"
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42 | #include <iprt/file.h>
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43 |
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44 | #include <iprt/assert.h>
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45 | #include <iprt/err.h>
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46 | #include <iprt/path.h>
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47 | #include <iprt/string.h>
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48 | #include <iprt/utf16.h>
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49 |
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50 | #include <iprt/win/windows.h>
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51 |
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52 |
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53 | /**
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54 | * Handles a mountpoint callback with WCHAR (as UTF-16) strings.
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55 | *
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56 | * @returns IPRT status code. Failure terminates the enumeration.
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57 | * @param pfnCallback Callback function to invoke.
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58 | * @param pvUser User-supplied pointer.
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59 | * @param pwszStr WCHAR string to pass to the callback function.
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60 | */
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61 | DECLINLINE(int) rtFsWinHandleCallback(PFNRTFSMOUNTPOINTENUM pfnCallback, void *pvUser, PWCHAR pwszStr)
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62 | {
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63 | char *psz;
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64 | int rc = RTUtf16ToUtf8((PCRTUTF16)pwszStr, &psz);
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65 | AssertRCReturn(rc, rc);
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66 | rc = pfnCallback(psz, pvUser);
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67 | RTStrFree(psz);
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68 | return rc;
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69 | }
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70 |
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71 | /**
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72 | * Mountpoint enumeration worker.
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73 | *
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74 | * This always enumerates all available/connected (disk-based) mountpoints and
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75 | * can be used for other functions to perform (custom) filtering.
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76 | *
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77 | * @returns IPRT status code.
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78 | * @param fRemote Also enumerates (currently connected) remote network resources.
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79 | * @param pfnCallback Callback function to invoke.
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80 | * @param pvUser User-supplied pointer. Optional and can be NULL.
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81 | */
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82 | static int rtFsWinMountpointsEnumWorker(bool fRemote, PFNRTFSMOUNTPOINTENUM pfnCallback, void *pvUser)
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83 | {
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84 | AssertPtrReturn(pfnCallback, VERR_INVALID_POINTER);
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85 | /* pvUser is optional. */
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86 |
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87 | int rc = VINF_SUCCESS;
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88 |
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89 | SetLastError(0);
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90 |
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91 | WCHAR wszVol[RTPATH_MAX];
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92 | HANDLE hVol = FindFirstVolumeW(wszVol, RT_ELEMENTS(wszVol));
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93 | if ( hVol
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94 | && hVol != INVALID_HANDLE_VALUE)
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95 | {
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96 | do
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97 | {
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98 | WCHAR wszMp[RTPATH_MAX];
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99 | HANDLE hMp = FindFirstVolumeMountPointW(wszVol, wszMp, RT_ELEMENTS(wszMp));
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100 | if ( hMp
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101 | && hMp != INVALID_HANDLE_VALUE)
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102 | {
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103 | do
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104 | {
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105 | rc = rtFsWinHandleCallback(pfnCallback, pvUser, wszMp);
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106 | if (RT_FAILURE(rc))
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107 | break;
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108 | }
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109 | while (FindNextVolumeMountPointW(hMp, wszMp, RT_ELEMENTS(wszMp)));
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110 | FindVolumeMountPointClose(hMp);
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111 | }
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112 | else if ( GetLastError() != ERROR_NO_MORE_FILES
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113 | && GetLastError() != ERROR_PATH_NOT_FOUND
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114 | && GetLastError() != ERROR_UNRECOGNIZED_VOLUME)
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115 | rc = RTErrConvertFromWin32(GetLastError());
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116 |
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117 | if (RT_SUCCESS(rc))
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118 | {
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119 | DWORD cwch = 0;
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120 | if (GetVolumePathNamesForVolumeNameW(wszVol, wszMp, RT_ELEMENTS(wszMp), &cwch))
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121 | {
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122 | size_t off = 0;
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123 | while (off < cwch)
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124 | {
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125 | size_t cwc = wcslen(&wszMp[off]);
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126 | if (cwc)
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127 | {
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128 | rc = rtFsWinHandleCallback(pfnCallback, pvUser, &wszMp[off]);
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129 | if (RT_FAILURE(rc))
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130 | break;
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131 | }
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132 | off += cwc + 1;
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133 | }
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134 | }
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135 | else
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136 | rc = RTErrConvertFromWin32(GetLastError());
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137 | }
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138 |
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139 | } while (RT_SUCCESS(rc) && FindNextVolumeW(hVol, wszVol, RT_ELEMENTS(wszVol)));
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140 | FindVolumeClose(hVol);
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141 | }
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142 | else
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143 | rc = RTErrConvertFromWin32(GetLastError());
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144 |
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145 | if ( RT_SUCCESS(rc)
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146 | && fRemote)
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147 | {
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148 | HANDLE hEnum;
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149 | DWORD dwErr = WNetOpenEnumA(RESOURCE_CONNECTED, RESOURCETYPE_DISK, RESOURCEUSAGE_ALL, NULL, &hEnum);
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150 | if (dwErr == NO_ERROR)
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151 | {
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152 | for (;;)
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153 | {
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154 | DWORD cResources = 1;
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155 | DWORD cbRet = sizeof(wszVol);
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156 | dwErr = WNetEnumResourceW(hEnum, &cResources, wszVol, &cbRet);
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157 | if (dwErr == NO_ERROR)
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158 | {
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159 | NETRESOURCEW const *pRsrc = (NETRESOURCEW const *)wszVol;
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160 | if ( pRsrc
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161 | && pRsrc->lpLocalName)
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162 | {
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163 | rc = rtFsWinHandleCallback(pfnCallback, pvUser, (PWCHAR)pRsrc->lpLocalName);
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164 | if (RT_FAILURE(rc))
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165 | break;
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166 | }
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167 | }
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168 | else
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169 | {
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170 | if (dwErr != ERROR_NO_MORE_ITEMS)
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171 | rc = RTErrConvertFromWin32(dwErr);
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172 | break;
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173 | }
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174 | }
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175 | }
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176 | else
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177 | rc = RTErrConvertFromWin32(dwErr);
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178 | }
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179 |
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180 | return rc;
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181 | }
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182 |
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183 |
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184 | RTR3DECL(int) RTFsMountpointsEnum(PFNRTFSMOUNTPOINTENUM pfnCallback, void *pvUser)
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185 | {
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186 | return rtFsWinMountpointsEnumWorker(true /* fRemote */, pfnCallback, pvUser);
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187 | }
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188 |
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