mirror of
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113 lines
3.1 KiB
C++
113 lines
3.1 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <assert.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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static void test_change_file_contents()
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{
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char path[] = "/tmp/suid.XXXXXX";
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auto fd = mkstemp(path);
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assert(fd != -1);
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ftruncate(fd, 0);
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assert(fchmod(fd, 06755) != -1);
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char buffer[8];
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memset(&buffer, 0, sizeof(buffer));
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write(fd, buffer, sizeof(buffer));
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struct stat s;
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assert(fstat(fd, &s) != -1);
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close(fd);
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assert(s.st_mode & ~S_ISUID);
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assert(s.st_mode & ~S_ISGID);
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unlink(path);
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}
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static void test_change_file_ownership()
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{
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char path[] = "/tmp/suid.XXXXXX";
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auto fd = mkstemp(path);
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assert(fd != -1);
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ftruncate(fd, 0);
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assert(fchmod(fd, 06755) != -1);
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fchown(fd, getuid(), getgid());
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struct stat s;
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assert(fstat(fd, &s) != -1);
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close(fd);
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assert(s.st_mode & ~S_ISUID);
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assert(s.st_mode & ~S_ISGID);
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unlink(path);
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}
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static void test_change_file_permissions()
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{
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char path[] = "/tmp/suid.XXXXXX";
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auto fd = mkstemp(path);
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assert(fd != -1);
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ftruncate(fd, 0);
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assert(fchmod(fd, 06755) != -1);
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fchmod(fd, 0755);
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struct stat s;
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assert(fstat(fd, &s) != -1);
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close(fd);
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assert(s.st_mode & ~S_ISUID);
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assert(s.st_mode & ~S_ISGID);
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unlink(path);
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}
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int main()
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{
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#define RUNTEST(x) \
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{ \
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printf("Running " #x " ...\n"); \
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x(); \
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printf("Success!\n"); \
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}
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RUNTEST(test_change_file_contents);
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RUNTEST(test_change_file_ownership);
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RUNTEST(test_change_file_permissions);
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printf("PASS\n");
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return 0;
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}
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