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/* $Id: tstRTSymlink.cpp $ */
/** @file
* IPRT Testcase - Symbolic Links.
*/
/*
* Copyright (C) 2010-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/symlink.h>
#include <iprt/test.h>
#include <iprt/dir.h>
#include <iprt/err.h>
#include <iprt/file.h>
#include <iprt/param.h>
#include <iprt/path.h>
#include <iprt/process.h>
#include <iprt/string.h>
#include <iprt/initterm.h>
static void test1Worker(RTTEST hTest, const char *pszBaseDir,
const char *pszTarget, RTSYMLINKTYPE enmType, bool fDangling)
{
char szPath1[RTPATH_MAX];
char szPath2[RTPATH_MAX];
size_t cchTarget = strlen(pszTarget);
char szPath3[RTPATH_MAX];
RTStrCopy(szPath3, sizeof(szPath3), pszTarget);
#ifdef RT_OS_WINDOWS
/* see RTSymlinkCreate in symlink-win.cpp */
char c;
char *psz = szPath3;
while ((c = *psz) != '\0')
{
if (c == '/')
*psz = '\\';
psz++;
}
#endif
/* Create it.*/
RTTESTI_CHECK_RC_OK_RETV(RTPathJoin(szPath1, sizeof(szPath1), pszBaseDir, "tstRTSymlink-link-1"));
RTSymlinkDelete(szPath1, 0); /* clean up previous run */
int rc = RTSymlinkCreate(szPath1, pszTarget, enmType, 0);
if (rc == VERR_NOT_SUPPORTED)
{
RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "VERR_NOT_SUPPORTED - skipping\n");
return;
}
RTTESTI_CHECK_RC_RETV(rc, VINF_SUCCESS);
/* Check the predicate functions. */
RTTESTI_CHECK(RTSymlinkExists(szPath1));
RTTESTI_CHECK(RTSymlinkIsDangling(szPath1) == fDangling);
/* Read it. */
memset(szPath2, 0xff, sizeof(szPath2));
szPath2[sizeof(szPath2) - 1] = '\0';
RTTESTI_CHECK_RC(RTSymlinkRead(szPath1, szPath2, sizeof(szPath2), 0), VINF_SUCCESS);
RTTESTI_CHECK_MSG(strcmp(szPath2, szPath3) == 0, ("got=\"%s\" expected=\"%s\"", szPath2, szPath3));
memset(szPath2, 0xff, sizeof(szPath2));
szPath2[sizeof(szPath2) - 1] = '\0';
RTTESTI_CHECK_RC(RTSymlinkRead(szPath1, szPath2, cchTarget + 1, 0), VINF_SUCCESS);
RTTESTI_CHECK_MSG(strcmp(szPath2, szPath3) == 0, ("got=\"%s\" expected=\"%s\"", szPath2, szPath3));
memset(szPath2, 0xff, sizeof(szPath2));
szPath2[sizeof(szPath2) - 1] = '\0';
RTTESTI_CHECK_RC(RTSymlinkRead(szPath1, szPath2, cchTarget, 0), VERR_BUFFER_OVERFLOW);
RTTESTI_CHECK_MSG( strncmp(szPath2, szPath3, cchTarget - 1) == 0
&& szPath2[cchTarget - 1] == '\0',
("got=\"%s\" expected=\"%.*s\"", szPath2, cchTarget - 1, szPath3));
/* Other APIs that have to handle symlinks carefully. */
RTFSOBJINFO ObjInfo;
RTTESTI_CHECK_RC(rc = RTPathQueryInfo(szPath1, &ObjInfo, RTFSOBJATTRADD_NOTHING), VINF_SUCCESS);
if (RT_SUCCESS(rc))
RTTESTI_CHECK(RTFS_IS_SYMLINK(ObjInfo.Attr.fMode));
RTTESTI_CHECK_RC(rc = RTPathQueryInfoEx(szPath1, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_ON_LINK), VINF_SUCCESS);
if (RT_SUCCESS(rc))
RTTESTI_CHECK(RTFS_IS_SYMLINK(ObjInfo.Attr.fMode));
if (!fDangling)
{
RTTESTI_CHECK_RC(rc = RTPathQueryInfoEx(szPath1, &ObjInfo, RTFSOBJATTRADD_NOTHING, RTPATH_F_FOLLOW_LINK), VINF_SUCCESS);
if (RT_SUCCESS(rc))
RTTESTI_CHECK(!RTFS_IS_SYMLINK(ObjInfo.Attr.fMode));
else
RT_ZERO(ObjInfo);
if (enmType == RTSYMLINKTYPE_DIR)
{
RTTESTI_CHECK(RTDirExists(szPath1));
RTTESTI_CHECK(RTFS_IS_DIRECTORY(ObjInfo.Attr.fMode));
}
else if (enmType == RTSYMLINKTYPE_FILE)
{
RTTESTI_CHECK(RTFileExists(szPath1));
RTTESTI_CHECK(RTFS_IS_FILE(ObjInfo.Attr.fMode));
}
/** @todo Check more APIs */
}
/* Finally, the removal of the symlink. */
RTTESTI_CHECK_RC(RTSymlinkDelete(szPath1, 0), VINF_SUCCESS);
RTTESTI_CHECK_RC(RTSymlinkDelete(szPath1, 0), VERR_FILE_NOT_FOUND);
}
static void test1(RTTEST hTest, const char *pszBaseDir)
{
char szPath1[RTPATH_MAX];
/*
* Making some assumptions about how we are executed from to start with...
*/
RTTestISub("Negative RTSymlinkRead, Exists & IsDangling");
char szExecDir[RTPATH_MAX];
RTTESTI_CHECK_RC_OK_RETV(RTPathExecDir(szExecDir, sizeof(szExecDir)));
RTTESTI_CHECK(RTDirExists(szExecDir));
char szExecFile[RTPATH_MAX];
RTTESTI_CHECK_RETV(RTProcGetExecutablePath(szExecFile, sizeof(szExecFile)) != NULL);
RTTESTI_CHECK(RTFileExists(szExecFile));
RTTESTI_CHECK(!RTSymlinkExists(szExecFile));
RTTESTI_CHECK(!RTSymlinkExists(szExecDir));
RTTESTI_CHECK(!RTSymlinkIsDangling(szExecFile));
RTTESTI_CHECK(!RTSymlinkIsDangling(szExecDir));
RTTESTI_CHECK(!RTSymlinkExists("/"));
RTTESTI_CHECK(!RTSymlinkIsDangling("/"));
RTTESTI_CHECK(!RTSymlinkExists("/some/non-existing/directory/name/iprt"));
RTTESTI_CHECK(!RTSymlinkExists("/some/non-existing/directory/name/iprt/"));
RTTESTI_CHECK(!RTSymlinkIsDangling("/some/non-existing/directory/name/iprt"));
RTTESTI_CHECK(!RTSymlinkIsDangling("/some/non-existing/directory/name/iprt/"));
RTTESTI_CHECK_RC(RTSymlinkRead(szExecFile, szPath1, sizeof(szPath1), 0), VERR_NOT_SYMLINK);
RTTESTI_CHECK_RC(RTSymlinkRead(szExecDir, szPath1, sizeof(szPath1), 0), VERR_NOT_SYMLINK);
/*
* Do some symlinking. ASSUME they are supported on the test file system.
*/
RTTestISub("Basics");
RTTESTI_CHECK_RETV(RTDirExists(pszBaseDir));
test1Worker(hTest, pszBaseDir, szExecFile, RTSYMLINKTYPE_FILE, false /*fDangling*/);
test1Worker(hTest, pszBaseDir, szExecDir, RTSYMLINKTYPE_DIR, false /*fDangling*/);
test1Worker(hTest, pszBaseDir, szExecFile, RTSYMLINKTYPE_UNKNOWN, false /*fDangling*/);
test1Worker(hTest, pszBaseDir, szExecDir, RTSYMLINKTYPE_UNKNOWN, false /*fDangling*/);
/*
* Create a few dangling links.
*/
RTTestISub("Dangling links");
test1Worker(hTest, pszBaseDir, "../dangle/dangle", RTSYMLINKTYPE_FILE, true /*fDangling*/);
test1Worker(hTest, pszBaseDir, "../dangle/dangle", RTSYMLINKTYPE_DIR, true /*fDangling*/);
test1Worker(hTest, pszBaseDir, "../dangle/dangle", RTSYMLINKTYPE_UNKNOWN, true /*fDangling*/);
test1Worker(hTest, pszBaseDir, "../dangle/dangle/", RTSYMLINKTYPE_UNKNOWN, true /*fDangling*/);
}
int main()
{
RTTEST hTest;
int rc = RTTestInitAndCreate("tstRTSymlink", &hTest);
if (rc)
return rc;
RTTestBanner(hTest);
test1(hTest, ".");
return RTTestSummaryAndDestroy(hTest);
}
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