1 files changed, 290 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/win/env-win.cpp b/src/VBox/Runtime/r3/win/env-win.cpp
new file mode 100644
index 00000000..09bf85e2
--- /dev/null
+++ b/src/VBox/Runtime/r3/win/env-win.cpp
@@ -0,0 +1,290 @@
+/* $Id: env-win.cpp $ */
+/** @file
+ * IPRT - Environment, Posix.
+ */
+
+/*
+ * Copyright (C) 2006-2020 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <iprt/env.h>
+
+#include <iprt/alloca.h>
+#include <iprt/assert.h>
+#include <iprt/err.h>
+#include <iprt/string.h>
+#include <iprt/mem.h>
+#include <iprt/utf16.h>
+
+#include <stdlib.h>
+#include <errno.h>
+
+
+RTDECL(bool) RTEnvExistsBad(const char *pszVar)
+{
+    return RTEnvGetBad(pszVar) != NULL;
+}
+
+
+RTDECL(bool) RTEnvExist(const char *pszVar)
+{
+    return RTEnvExistsBad(pszVar);
+}
+
+
+RTDECL(bool) RTEnvExistsUtf8(const char *pszVar)
+{
+    AssertReturn(strchr(pszVar, '=') == NULL, false);
+
+    PRTUTF16 pwszVar;
+    int rc = RTStrToUtf16(pszVar, &pwszVar);
+    AssertRCReturn(rc, false);
+    bool fRet = _wgetenv(pwszVar) != NULL;
+    RTUtf16Free(pwszVar);
+    return fRet;
+}
+
+
+RTDECL(const char *) RTEnvGetBad(const char *pszVar)
+{
+    AssertReturn(strchr(pszVar, '=') == NULL, NULL);
+    return getenv(pszVar);
+}
+
+
+RTDECL(const char *) RTEnvGet(const char *pszVar)
+{
+    return RTEnvGetBad(pszVar);
+}
+
+RTDECL(int) RTEnvGetUtf8(const char *pszVar, char *pszValue, size_t cbValue, size_t *pcchActual)
+{
+    AssertPtrReturn(pszVar, VERR_INVALID_POINTER);
+    AssertPtrNullReturn(pszValue, VERR_INVALID_POINTER);
+    AssertReturn(pszValue || !cbValue, VERR_INVALID_PARAMETER);
+    AssertPtrNullReturn(pcchActual, VERR_INVALID_POINTER);
+    AssertReturn(pcchActual || (pszValue && cbValue), VERR_INVALID_PARAMETER);
+    AssertReturn(strchr(pszVar, '=') == NULL, VERR_ENV_INVALID_VAR_NAME);
+
+    if (pcchActual)
+        *pcchActual = 0;
+
+    PRTUTF16 pwszVar;
+    int rc = RTStrToUtf16(pszVar, &pwszVar);
+    AssertRCReturn(rc, rc);
+
+    /** @todo Consider _wgetenv_s or GetEnvironmentVariableW here to avoid the
+     *        potential race with a concurrent _wputenv/_putenv. */
+    PCRTUTF16 pwszValue = _wgetenv(pwszVar);
+    RTUtf16Free(pwszVar);
+    if (pwszValue)
+    {
+        if (cbValue)
+            rc = RTUtf16ToUtf8Ex(pwszValue, RTSTR_MAX, &pszValue, cbValue, pcchActual);
+        else
+            rc = RTUtf16CalcUtf8LenEx(pwszValue, RTSTR_MAX, pcchActual);
+    }
+    else
+        rc = VERR_ENV_VAR_NOT_FOUND;
+    return rc;
+}
+
+
+RTDECL(int) RTEnvPutBad(const char *pszVarEqualValue)
+{
+    /** @todo putenv is a source memory leaks. deal with this on a per system basis. */
+    if (!putenv((char *)pszVarEqualValue))
+        return 0;
+    return RTErrConvertFromErrno(errno);
+}
+
+
+RTDECL(int) RTEnvPut(const char *pszVarEqualValue)
+{
+    return RTEnvPutBad(pszVarEqualValue);
+}
+
+
+RTDECL(int) RTEnvPutUtf8(const char *pszVarEqualValue)
+{
+    PRTUTF16 pwszVarEqualValue;
+    int rc = RTStrToUtf16(pszVarEqualValue, &pwszVarEqualValue);
+    if (RT_SUCCESS(rc))
+    {
+        if (!_wputenv(pwszVarEqualValue))
+            rc = VINF_SUCCESS;
+        else
+            rc = RTErrConvertFromErrno(errno);
+        RTUtf16Free(pwszVarEqualValue);
+    }
+    return rc;
+}
+
+
+
+RTDECL(int) RTEnvSetBad(const char *pszVar, const char *pszValue)
+{
+    AssertMsgReturn(strchr(pszVar, '=') == NULL, ("'%s'\n", pszVar), VERR_ENV_INVALID_VAR_NAME);
+
+    /* make a local copy and feed it to putenv. */
+    const size_t cchVar = strlen(pszVar);
+    const size_t cchValue = strlen(pszValue);
+    char *pszTmp = (char *)alloca(cchVar + cchValue + 2 + !*pszValue);
+    memcpy(pszTmp, pszVar, cchVar);
+    pszTmp[cchVar] = '=';
+    if (*pszValue)
+        memcpy(pszTmp + cchVar + 1, pszValue, cchValue + 1);
+    else
+    {
+        pszTmp[cchVar + 1] = ' '; /* wrong, but putenv will remove it otherwise. */
+        pszTmp[cchVar + 2] = '\0';
+    }
+
+    if (!putenv(pszTmp))
+        return 0;
+    return RTErrConvertFromErrno(errno);
+}
+
+
+RTDECL(int) RTEnvSet(const char *pszVar, const char *pszValue)
+{
+    return RTEnvSetBad(pszVar, pszValue);
+}
+
+
+/**
+ * Worker common to RTEnvSetUtf8() and rtEnvSetExWorker().
+ */
+int rtEnvSetUtf8Worker(const char *pchVar, size_t cchVar, const char *pszValue)
+{
+    size_t cwcVar;
+    int rc = RTStrCalcUtf16LenEx(pchVar, cchVar, &cwcVar);
+    if (RT_SUCCESS(rc))
+    {
+        size_t cwcValue;
+        rc = RTStrCalcUtf16LenEx(pszValue, RTSTR_MAX, &cwcValue);
+        if (RT_SUCCESS(rc))
+        {
+            PRTUTF16 pwszTmp = (PRTUTF16)RTMemTmpAlloc((cwcVar + 1 + cwcValue + 1) * sizeof(RTUTF16));
+            if (pwszTmp)
+            {
+                rc = RTStrToUtf16Ex(pchVar, cchVar, &pwszTmp, cwcVar + 1, NULL);
+                if (RT_SUCCESS(rc))
+                {
+                    PRTUTF16 pwszTmpValue = &pwszTmp[cwcVar];
+                    *pwszTmpValue++ = '=';
+                    rc = RTStrToUtf16Ex(pszValue, RTSTR_MAX, &pwszTmpValue, cwcValue + 1, NULL);
+                    if (RT_SUCCESS(rc))
+                    {
+                        if (!_wputenv(pwszTmp))
+                            rc = VINF_SUCCESS;
+                        else
+                            rc = RTErrConvertFromErrno(errno);
+                    }
+                }
+                RTMemTmpFree(pwszTmp);
+            }
+            else
+                rc = VERR_NO_TMP_MEMORY;
+        }
+    }
+    return rc;
+}
+
+
+RTDECL(int) RTEnvSetUtf8(const char *pszVar, const char *pszValue)
+{
+    size_t cchVar = strlen(pszVar);
+    AssertReturn(memchr(pszVar, '=', cchVar) == NULL, VERR_ENV_INVALID_VAR_NAME);
+    return rtEnvSetUtf8Worker(pszVar, cchVar, pszValue);
+}
+
+
+RTDECL(int) RTEnvUnsetBad(const char *pszVar)
+{
+    AssertReturn(strchr(pszVar, '=') == NULL, VERR_ENV_INVALID_VAR_NAME);
+
+    /*
+     * Check that it exists first.
+     */
+    if (!RTEnvExist(pszVar))
+        return VINF_ENV_VAR_NOT_FOUND;
+
+    /*
+     * Ok, try remove it.
+     */
+#ifdef RT_OS_WINDOWS
+    /* Use putenv(var=) since Windows does not have unsetenv(). */
+    size_t cchVar = strlen(pszVar);
+    char *pszBuf = (char *)alloca(cchVar + 2);
+    memcpy(pszBuf, pszVar, cchVar);
+    pszBuf[cchVar]     = '=';
+    pszBuf[cchVar + 1] = '\0';
+
+    if (!putenv(pszBuf))
+        return VINF_SUCCESS;
+
+#else
+    /* This is the preferred function as putenv() like used above does neither work on Solaris nor on Darwin. */
+    if (!unsetenv((char*)pszVar))
+        return VINF_SUCCESS;
+#endif
+
+    return RTErrConvertFromErrno(errno);
+}
+
+
+RTDECL(int) RTEnvUnset(const char *pszVar)
+{
+    return RTEnvUnsetBad(pszVar);
+}
+
+
+RTDECL(int) RTEnvUnsetUtf8(const char *pszVar)
+{
+    AssertReturn(strchr(pszVar, '=') == NULL, VERR_ENV_INVALID_VAR_NAME);
+
+    size_t cwcVar;
+    int rc = RTStrCalcUtf16LenEx(pszVar, RTSTR_MAX, &cwcVar);
+    if (RT_SUCCESS(rc))
+    {
+        PRTUTF16 pwszTmp = (PRTUTF16)RTMemTmpAlloc((cwcVar + 1 + 1) * sizeof(RTUTF16));
+        if (pwszTmp)
+        {
+            rc = RTStrToUtf16Ex(pszVar, RTSTR_MAX, &pwszTmp, cwcVar + 1, NULL);
+            if (RT_SUCCESS(rc))
+            {
+                pwszTmp[cwcVar] = '=';
+                pwszTmp[cwcVar + 1] = '\0';
+                if (!_wputenv(pwszTmp))
+                    rc = VINF_SUCCESS;
+                else
+                    rc = RTErrConvertFromErrno(errno);
+            }
+            RTMemTmpFree(pwszTmp);
+        }
+    }
+    return rc;
+}
+