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git://source.winehq.org/git/wine.git
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360 lines
9.1 KiB
C
360 lines
9.1 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 "msvcrt.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
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static char * getenv_helper(const char *name)
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{
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char **env;
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size_t len;
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if (!name) return NULL;
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len = strlen(name);
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for (env = MSVCRT__environ; *env; env++)
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{
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char *str = *env;
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char *pos = strchr(str,'=');
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if (pos && ((pos - str) == len) && !_strnicmp(str, name, len))
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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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* getenv (MSVCRT.@)
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*/
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char * CDECL getenv(const char *name)
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{
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if (!MSVCRT_CHECK_PMT(name != NULL)) return NULL;
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return getenv_helper(name);
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}
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static wchar_t * wgetenv_helper(const wchar_t *name)
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{
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wchar_t **env;
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size_t len;
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if (!name) return NULL;
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len = wcslen(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 (env = MSVCRT__wenviron; *env; env++)
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{
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wchar_t *str = *env;
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wchar_t *pos = wcschr(str,'=');
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if (pos && ((pos - str) == len) && !_wcsnicmp(str, name, len))
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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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* _wgetenv (MSVCRT.@)
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*/
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wchar_t * CDECL _wgetenv(const wchar_t *name)
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{
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if (!MSVCRT_CHECK_PMT(name != NULL)) return NULL;
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return wgetenv_helper(name);
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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 wchar_t *str)
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{
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wchar_t *name, *value;
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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, (wcslen(str) + 1) * sizeof(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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errno_t CDECL _putenv_s(const char *name, const char *value)
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{
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errno_t ret = 0;
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TRACE("%s %s\n", debugstr_a(name), debugstr_a(value));
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if (!MSVCRT_CHECK_PMT(name != NULL)) return EINVAL;
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if (!MSVCRT_CHECK_PMT(value != NULL)) return EINVAL;
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if (!SetEnvironmentVariableA(name, value[0] ? value : NULL))
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{
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/* _putenv returns success on deletion of nonexistent variable */
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if (GetLastError() != ERROR_ENVVAR_NOT_FOUND)
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{
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msvcrt_set_errno(GetLastError());
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ret = *_errno();
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}
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}
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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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errno_t CDECL _wputenv_s(const wchar_t *name, const wchar_t *value)
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{
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errno_t ret = 0;
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TRACE("%s %s\n", debugstr_w(name), debugstr_w(value));
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if (!MSVCRT_CHECK_PMT(name != NULL)) return EINVAL;
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if (!MSVCRT_CHECK_PMT(value != NULL)) return EINVAL;
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if (!SetEnvironmentVariableW(name, value[0] ? value : NULL))
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{
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/* _putenv returns success on deletion of nonexistent variable */
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if (GetLastError() != ERROR_ENVVAR_NOT_FOUND)
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{
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msvcrt_set_errno(GetLastError());
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ret = *_errno();
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}
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}
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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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#if _MSVCR_VER>=80
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/******************************************************************
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* _dupenv_s (MSVCR80.@)
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*/
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int CDECL _dupenv_s(char **buffer, size_t *numberOfElements, const char *varname)
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{
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char *e;
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size_t sz;
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if (!MSVCRT_CHECK_PMT(buffer != NULL)) return EINVAL;
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if (!MSVCRT_CHECK_PMT(varname != NULL)) return EINVAL;
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if (!(e = getenv(varname)))
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{
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*buffer = NULL;
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if (numberOfElements) *numberOfElements = 0;
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return 0;
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}
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sz = strlen(e) + 1;
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if (!(*buffer = malloc(sz)))
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{
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if (numberOfElements) *numberOfElements = 0;
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return *_errno() = 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 (MSVCR80.@)
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*/
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int CDECL _wdupenv_s(wchar_t **buffer, size_t *numberOfElements,
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const wchar_t *varname)
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{
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wchar_t *e;
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size_t sz;
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if (!MSVCRT_CHECK_PMT(buffer != NULL)) return EINVAL;
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if (!MSVCRT_CHECK_PMT(varname != NULL)) return EINVAL;
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if (!(e = _wgetenv(varname)))
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{
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*buffer = NULL;
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if (numberOfElements) *numberOfElements = 0;
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return 0;
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}
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sz = wcslen(e) + 1;
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if (!(*buffer = malloc(sz * sizeof(wchar_t))))
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{
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if (numberOfElements) *numberOfElements = 0;
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return *_errno() = ENOMEM;
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}
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wcscpy(*buffer, e);
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if (numberOfElements) *numberOfElements = sz;
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return 0;
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}
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#endif /* _MSVCR_VER>=80 */
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/******************************************************************
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* getenv_s (MSVCRT.@)
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*/
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int CDECL getenv_s(size_t *ret_len, char* buffer, size_t len, const char *varname)
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{
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char *e;
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if (!MSVCRT_CHECK_PMT(ret_len != NULL)) return EINVAL;
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*ret_len = 0;
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if (!MSVCRT_CHECK_PMT((buffer && len > 0) || (!buffer && !len))) return EINVAL;
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if (buffer) buffer[0] = 0;
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if (!(e = getenv_helper(varname))) return 0;
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*ret_len = strlen(e) + 1;
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if (!len) return 0;
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if (len < *ret_len) return ERANGE;
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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(size_t *ret_len, wchar_t *buffer, size_t len,
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const wchar_t *varname)
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{
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wchar_t *e;
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if (!MSVCRT_CHECK_PMT(ret_len != NULL)) return EINVAL;
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*ret_len = 0;
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if (!MSVCRT_CHECK_PMT((buffer && len > 0) || (!buffer && !len))) return EINVAL;
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if (buffer) buffer[0] = 0;
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if (!(e = wgetenv_helper(varname))) return 0;
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*ret_len = wcslen(e) + 1;
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if (!len) return 0;
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if (len < *ret_len) return ERANGE;
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wcscpy(buffer, e);
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return 0;
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}
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/*********************************************************************
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* _get_environ (MSVCRT.@)
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*/
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void CDECL _get_environ(char ***ptr)
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{
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*ptr = MSVCRT__environ;
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}
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/*********************************************************************
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* _get_wenviron (MSVCRT.@)
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*/
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void CDECL _get_wenviron(wchar_t ***ptr)
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{
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*ptr = MSVCRT__wenviron;
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}
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