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https://github.com/jart/cosmopolitan.git
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7166679620
- Fix a regression with the previous change that broke redbean - Add chroot(), resource limit, seccomp, and other stuff to redbean - Write lots and lots of documentation - Iron out more system call issues
72 lines
3.1 KiB
C
72 lines
3.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/calls/struct/iovec.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/runtime/runtime.h"
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#include "libc/sock/sock.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/consts/pr.h"
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#include "libc/sysv/consts/seccomp.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/testlib/testlib.h"
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bool __is_linux_2_6_23(void) {
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if (!IsLinux()) return false;
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return prctl(PR_GET_SECCOMP) != -1; // errno should be EINVAL
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}
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void SetUp(void) {
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if (!__is_linux_2_6_23()) {
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exit(0);
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}
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}
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TEST(seccompStrictMode, evilProcess_getsKill9d) {
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int ws, pid;
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ASSERT_NE(-1, (pid = fork()));
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if (!pid) {
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EXPECT_EQ(0, seccomp(SECCOMP_SET_MODE_STRICT, 0, 0));
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open("/etc/passwd", O_RDWR);
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_Exit1(127);
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}
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EXPECT_NE(-1, wait(&ws));
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EXPECT_TRUE(WIFSIGNALED(ws));
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EXPECT_EQ(SIGKILL, WTERMSIG(ws));
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}
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TEST(seccompStrictMode, goodProcess_isAuthorized) {
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int ws, pid;
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int pfds[2];
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char buf[3] = {0};
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ASSERT_SYS(0, 0, pipe(pfds));
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ASSERT_NE(-1, (pid = fork()));
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if (!pid) {
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EXPECT_EQ(0, seccomp(SECCOMP_SET_MODE_STRICT, 0, 0));
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write(pfds[1], "hi", 3);
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_Exit1(0);
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}
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EXPECT_SYS(0, 0, close(pfds[1]));
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EXPECT_SYS(0, 3, read(pfds[0], buf, 3));
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EXPECT_SYS(0, 0, close(pfds[0]));
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EXPECT_NE(-1, wait(&ws));
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EXPECT_TRUE(WIFEXITED(ws));
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EXPECT_EQ(0, WEXITSTATUS(ws));
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EXPECT_STREQ("hi", buf);
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}
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