mirror of
https://github.com/reactos/wine.git
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319 lines
8.9 KiB
C
319 lines
8.9 KiB
C
/*
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* msvcrt.dll environment functions
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*
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* Copyright 1996,1998 Marcus Meissner
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* Copyright 1996 Jukka Iivonen
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* Copyright 1997,2000 Uwe Bonnes
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* Copyright 2000 Jon Griffiths
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "wine/unicode.h"
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#include "msvcrt.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
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/*********************************************************************
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* getenv (MSVCRT.@)
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*/
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char * CDECL MSVCRT_getenv(const char *name)
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{
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char **environ;
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unsigned int length=strlen(name);
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for (environ = MSVCRT__environ; *environ; environ++)
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{
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char *str = *environ;
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char *pos = strchr(str,'=');
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if (pos && ((pos - str) == length) && !strncasecmp(str,name,length))
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{
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TRACE("(%s): got %s\n", debugstr_a(name), debugstr_a(pos + 1));
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return pos + 1;
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}
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}
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return NULL;
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}
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/*********************************************************************
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* _wgetenv (MSVCRT.@)
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*/
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MSVCRT_wchar_t * CDECL MSVCRT__wgetenv(const MSVCRT_wchar_t *name)
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{
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MSVCRT_wchar_t **environ;
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unsigned int length=strlenW(name);
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/* Initialize the _wenviron array if it's not already created. */
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if (!MSVCRT__wenviron)
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MSVCRT__wenviron = msvcrt_SnapshotOfEnvironmentW(NULL);
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for (environ = MSVCRT__wenviron; *environ; environ++)
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{
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MSVCRT_wchar_t *str = *environ;
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MSVCRT_wchar_t *pos = strchrW(str,'=');
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if (pos && ((pos - str) == length) && !strncmpiW(str,name,length))
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{
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TRACE("(%s): got %s\n", debugstr_w(name), debugstr_w(pos + 1));
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return pos + 1;
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}
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}
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return NULL;
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}
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/*********************************************************************
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* _putenv (MSVCRT.@)
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*/
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int CDECL _putenv(const char *str)
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{
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char *name, *value;
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char *dst;
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int ret;
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TRACE("%s\n", debugstr_a(str));
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if (!str)
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return -1;
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name = HeapAlloc(GetProcessHeap(), 0, strlen(str) + 1);
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if (!name)
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return -1;
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dst = name;
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while (*str && *str != '=')
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*dst++ = *str++;
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if (!*str++)
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{
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ret = -1;
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goto finish;
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}
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*dst++ = '\0';
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value = dst;
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while (*str)
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*dst++ = *str++;
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*dst = '\0';
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ret = SetEnvironmentVariableA(name, value[0] ? value : NULL) ? 0 : -1;
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/* _putenv returns success on deletion of nonexistent variable, unlike [Rtl]SetEnvironmentVariable */
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if ((ret == -1) && (GetLastError() == ERROR_ENVVAR_NOT_FOUND)) ret = 0;
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MSVCRT__environ = msvcrt_SnapshotOfEnvironmentA(MSVCRT__environ);
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/* Update the __p__wenviron array only when already initialized */
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if (MSVCRT__wenviron)
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MSVCRT__wenviron = msvcrt_SnapshotOfEnvironmentW(MSVCRT__wenviron);
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finish:
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HeapFree(GetProcessHeap(), 0, name);
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return ret;
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}
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/*********************************************************************
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* _wputenv (MSVCRT.@)
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*/
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int CDECL _wputenv(const MSVCRT_wchar_t *str)
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{
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MSVCRT_wchar_t *name, *value;
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MSVCRT_wchar_t *dst;
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int ret;
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TRACE("%s\n", debugstr_w(str));
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if (!str)
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return -1;
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name = HeapAlloc(GetProcessHeap(), 0, (strlenW(str) + 1) * sizeof(MSVCRT_wchar_t));
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if (!name)
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return -1;
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dst = name;
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while (*str && *str != '=')
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*dst++ = *str++;
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if (!*str++)
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{
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ret = -1;
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goto finish;
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}
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*dst++ = 0;
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value = dst;
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while (*str)
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*dst++ = *str++;
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*dst = 0;
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ret = SetEnvironmentVariableW(name, value[0] ? value : NULL) ? 0 : -1;
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/* _putenv returns success on deletion of nonexistent variable, unlike [Rtl]SetEnvironmentVariable */
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if ((ret == -1) && (GetLastError() == ERROR_ENVVAR_NOT_FOUND)) ret = 0;
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MSVCRT__environ = msvcrt_SnapshotOfEnvironmentA(MSVCRT__environ);
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MSVCRT__wenviron = msvcrt_SnapshotOfEnvironmentW(MSVCRT__wenviron);
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finish:
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HeapFree(GetProcessHeap(), 0, name);
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return ret;
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}
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/*********************************************************************
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* _putenv_s (MSVCRT.@)
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*/
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int CDECL _putenv_s(const char *name, const char *value)
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{
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int ret;
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TRACE("%s %s\n", debugstr_a(name), debugstr_a(value));
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if (!MSVCRT_CHECK_PMT(name != NULL) || !MSVCRT_CHECK_PMT(value != NULL))
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{
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*MSVCRT__errno() = MSVCRT_EINVAL;
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return -1;
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}
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ret = SetEnvironmentVariableA(name, value[0] ? value : NULL) ? 0 : -1;
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/* _putenv returns success on deletion of nonexistent variable, unlike [Rtl]SetEnvironmentVariable */
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if ((ret == -1) && (GetLastError() == ERROR_ENVVAR_NOT_FOUND)) ret = 0;
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MSVCRT__environ = msvcrt_SnapshotOfEnvironmentA(MSVCRT__environ);
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MSVCRT__wenviron = msvcrt_SnapshotOfEnvironmentW(MSVCRT__wenviron);
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return ret;
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}
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/*********************************************************************
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* _wputenv_s (MSVCRT.@)
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*/
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int CDECL _wputenv_s(const MSVCRT_wchar_t *name, const MSVCRT_wchar_t *value)
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{
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int ret;
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TRACE("%s %s\n", debugstr_w(name), debugstr_w(value));
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if (!MSVCRT_CHECK_PMT(name != NULL) || !MSVCRT_CHECK_PMT(value != NULL))
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{
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*MSVCRT__errno() = MSVCRT_EINVAL;
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return -1;
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}
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ret = SetEnvironmentVariableW(name, value[0] ? value : NULL) ? 0 : -1;
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/* _putenv returns success on deletion of nonexistent variable, unlike [Rtl]SetEnvironmentVariable */
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if ((ret == -1) && (GetLastError() == ERROR_ENVVAR_NOT_FOUND)) ret = 0;
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MSVCRT__environ = msvcrt_SnapshotOfEnvironmentA(MSVCRT__environ);
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MSVCRT__wenviron = msvcrt_SnapshotOfEnvironmentW(MSVCRT__wenviron);
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return ret;
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}
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/******************************************************************
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* _dupenv_s (MSVCRT.@)
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*/
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int CDECL _dupenv_s(char **buffer, MSVCRT_size_t *numberOfElements, const char *varname)
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{
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char* e;
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MSVCRT_size_t sz;
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if (!MSVCRT_CHECK_PMT(buffer != NULL) || !MSVCRT_CHECK_PMT(varname) ||
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!(e = MSVCRT_getenv(varname)))
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{
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return *MSVCRT__errno() = MSVCRT_EINVAL;
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}
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sz = strlen(e) + 1;
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if (!(*buffer = MSVCRT_malloc(sz)))
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{
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if (numberOfElements) *numberOfElements = 0;
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return *MSVCRT__errno() = MSVCRT_ENOMEM;
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}
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strcpy(*buffer, e);
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if (numberOfElements) *numberOfElements = sz;
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return 0;
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}
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/******************************************************************
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* _wdupenv_s (MSVCRT.@)
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*/
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int CDECL _wdupenv_s(MSVCRT_wchar_t **buffer, MSVCRT_size_t *numberOfElements,
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const MSVCRT_wchar_t *varname)
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{
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MSVCRT_wchar_t* e;
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MSVCRT_size_t sz;
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if (!MSVCRT_CHECK_PMT(buffer != NULL) || !MSVCRT_CHECK_PMT(varname) ||
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!(e = MSVCRT__wgetenv(varname)))
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{
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return *MSVCRT__errno() = MSVCRT_EINVAL;
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}
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sz = strlenW(e) + 1;
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if (!(*buffer = MSVCRT_malloc(sz * sizeof(MSVCRT_wchar_t))))
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{
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if (numberOfElements) *numberOfElements = 0;
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return *MSVCRT__errno() = MSVCRT_ENOMEM;
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}
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strcpyW(*buffer, e);
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if (numberOfElements) *numberOfElements = sz;
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return 0;
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}
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/******************************************************************
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* getenv_s (MSVCRT.@)
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*/
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int CDECL getenv_s(MSVCRT_size_t *pReturnValue, char* buffer, MSVCRT_size_t numberOfElements, const char *varname)
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{
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char* e;
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if (!MSVCRT_CHECK_PMT(pReturnValue != NULL) ||
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!MSVCRT_CHECK_PMT(!(buffer == NULL && numberOfElements > 0)) ||
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!MSVCRT_CHECK_PMT(varname != NULL))
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{
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return *MSVCRT__errno() = MSVCRT_EINVAL;
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}
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if (!(e = MSVCRT_getenv(varname)))
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{
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*pReturnValue = 0;
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return *MSVCRT__errno() = MSVCRT_EINVAL;
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}
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*pReturnValue = strlen(e) + 1;
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if (numberOfElements < *pReturnValue)
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{
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return *MSVCRT__errno() = MSVCRT_ERANGE;
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}
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strcpy(buffer, e);
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return 0;
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}
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/******************************************************************
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* _wgetenv_s (MSVCRT.@)
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*/
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int CDECL _wgetenv_s(MSVCRT_size_t *pReturnValue, MSVCRT_wchar_t *buffer, MSVCRT_size_t numberOfElements,
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const MSVCRT_wchar_t *varname)
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{
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MSVCRT_wchar_t* e;
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if (!MSVCRT_CHECK_PMT(pReturnValue != NULL) ||
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!MSVCRT_CHECK_PMT(!(buffer == NULL && numberOfElements > 0)) ||
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!MSVCRT_CHECK_PMT(varname != NULL))
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{
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return *MSVCRT__errno() = MSVCRT_EINVAL;
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}
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if (!(e = MSVCRT__wgetenv(varname)))
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{
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*pReturnValue = 0;
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return *MSVCRT__errno() = MSVCRT_EINVAL;
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}
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*pReturnValue = strlenW(e) + 1;
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if (numberOfElements < *pReturnValue)
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{
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return *MSVCRT__errno() = MSVCRT_ERANGE;
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}
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strcpyW(buffer, e);
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return 0;
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}
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