2 1a49166d 2021-01-23 op * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
4 e29dbd72 2021-01-23 op * Permission to use, copy, modify, and distribute this software for any
5 e29dbd72 2021-01-23 op * purpose with or without fee is hereby granted, provided that the above
6 e29dbd72 2021-01-23 op * copyright notice and this permission notice appear in all copies.
8 e29dbd72 2021-01-23 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 e29dbd72 2021-01-23 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 e29dbd72 2021-01-23 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 e29dbd72 2021-01-23 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 e29dbd72 2021-01-23 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 e29dbd72 2021-01-23 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 e29dbd72 2021-01-23 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 dafb57b8 2021-01-15 op #include "gmid.h"
19 dafb57b8 2021-01-15 op #if defined(__FreeBSD__)
21 dafb57b8 2021-01-15 op #include <sys/capsicum.h>
24 62e001b0 2021-03-20 op sandbox_server_process(void)
26 dafb57b8 2021-01-15 op if (cap_enter() == -1)
27 8e56d6ad 2021-02-11 op fatal("cap_enter");
31 62e001b0 2021-03-20 op sandbox_executor_process(void)
33 62e001b0 2021-03-20 op /* We cannot capsicum the executor process because it needs
34 62e001b0 2021-03-20 op * to fork(2)+execve(2) cgi scripts */
39 62e001b0 2021-03-20 op sandbox_logger_process(void)
41 62e001b0 2021-03-20 op if (cap_enter() == -1)
42 62e001b0 2021-03-20 op fatal("cap_enter");
45 dafb57b8 2021-01-15 op #elif defined(__linux__)
47 71b7eb2f 2021-01-17 op #include <sys/prctl.h>
48 71b7eb2f 2021-01-17 op #include <sys/syscall.h>
49 71b7eb2f 2021-01-17 op #include <sys/syscall.h>
50 71b7eb2f 2021-01-17 op #include <sys/types.h>
52 71b7eb2f 2021-01-17 op #include <linux/audit.h>
53 71b7eb2f 2021-01-17 op #include <linux/filter.h>
54 71b7eb2f 2021-01-17 op #include <linux/seccomp.h>
56 71b7eb2f 2021-01-17 op #include <errno.h>
57 3c0375e4 2021-01-20 op #include <fcntl.h>
58 71b7eb2f 2021-01-17 op #include <stddef.h>
59 71b7eb2f 2021-01-17 op #include <stdio.h>
60 71b7eb2f 2021-01-17 op #include <string.h>
62 137def5f 2021-07-02 op /* uncomment to enable debugging. ONLY FOR DEVELOPMENT */
63 137def5f 2021-07-02 op /* #define SC_DEBUG */
65 137def5f 2021-07-02 op #ifdef SC_DEBUG
66 137def5f 2021-07-02 op # define SC_FAIL SECCOMP_RET_TRAP
68 137def5f 2021-07-02 op # define SC_FAIL SECCOMP_RET_KILL
71 137def5f 2021-07-02 op #if (BYTE_ORDER == LITTLE_ENDIAN)
72 137def5f 2021-07-02 op # define SC_ARG_LO 0
73 137def5f 2021-07-02 op # define SC_ARG_HI sizeof(uint32_t)
74 137def5f 2021-07-02 op #elif (BYTE_ORDER == BIG_ENDIAN)
75 137def5f 2021-07-02 op # define SC_ARG_LO sizeof(uint32_t)
76 137def5f 2021-07-02 op # define SC_ARG_HI 0
78 137def5f 2021-07-02 op # error "Uknown endian"
81 137def5f 2021-07-02 op /* make the filter more readable */
82 137def5f 2021-07-02 op #define SC_ALLOW(nr) \
83 137def5f 2021-07-02 op BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, __NR_##nr, 0, 1), \
84 137def5f 2021-07-02 op BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_ALLOW)
87 137def5f 2021-07-02 op * SC_ALLOW_ARG and the SECCOMP_AUDIT_ARCH below are courtesy of
88 137def5f 2021-07-02 op * https://roy.marples.name/git/dhcpcd/blob/HEAD:/src/privsep-linux.c
90 137def5f 2021-07-02 op #define SC_ALLOW_ARG(_nr, _arg, _val) \
91 137def5f 2021-07-02 op BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, (_nr), 0, 6), \
92 137def5f 2021-07-02 op BPF_STMT(BPF_LD + BPF_W + BPF_ABS, \
93 137def5f 2021-07-02 op offsetof(struct seccomp_data, args[(_arg)]) + SC_ARG_LO), \
94 137def5f 2021-07-02 op BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, \
95 137def5f 2021-07-02 op ((_val) & 0xffffffff), 0, 3), \
96 137def5f 2021-07-02 op BPF_STMT(BPF_LD + BPF_W + BPF_ABS, \
97 137def5f 2021-07-02 op offsetof(struct seccomp_data, args[(_arg)]) + SC_ARG_HI), \
98 137def5f 2021-07-02 op BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, \
99 137def5f 2021-07-02 op (((uint32_t)((uint64_t)(_val) >> 32)) & 0xffffffff), 0, 1), \
100 137def5f 2021-07-02 op BPF_STMT(BPF_RET + BPF_K, SECCOMP_RET_ALLOW), \
101 137def5f 2021-07-02 op BPF_STMT(BPF_LD + BPF_W + BPF_ABS, \
102 137def5f 2021-07-02 op offsetof(struct seccomp_data, nr))
105 137def5f 2021-07-02 op * I personally find this quite nutty. Why can a system header not
106 137def5f 2021-07-02 op * define a default for this?
108 71b7eb2f 2021-01-17 op #if defined(__i386__)
109 71b7eb2f 2021-01-17 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_I386
110 71b7eb2f 2021-01-17 op #elif defined(__x86_64__)
111 71b7eb2f 2021-01-17 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_X86_64
112 137def5f 2021-07-02 op #elif defined(__arc__)
113 137def5f 2021-07-02 op # if defined(__A7__)
114 137def5f 2021-07-02 op # if (BYTE_ORDER == LITTLE_ENDIAN)
115 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_ARCOMPACT
117 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_ARCOMPACTBE
119 137def5f 2021-07-02 op # elif defined(__HS__)
120 137def5f 2021-07-02 op # if (BYTE_ORDER == LITTLE_ENDIAN)
121 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_ARCV2
123 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_ARCV2BE
126 137def5f 2021-07-02 op # error "Platform does not support seccomp filter yet"
128 71b7eb2f 2021-01-17 op #elif defined(__arm__)
129 137def5f 2021-07-02 op # ifndef EM_ARM
130 137def5f 2021-07-02 op # define EM_ARM 40
132 137def5f 2021-07-02 op # if (BYTE_ORDER == LITTLE_ENDIAN)
133 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_ARM
135 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_ARMEB
137 71b7eb2f 2021-01-17 op #elif defined(__aarch64__)
138 71b7eb2f 2021-01-17 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_AARCH64
139 137def5f 2021-07-02 op #elif defined(__alpha__)
140 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_ALPHA
141 137def5f 2021-07-02 op #elif defined(__hppa__)
142 137def5f 2021-07-02 op # if defined(__LP64__)
143 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_PARISC64
145 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_PARISC
147 137def5f 2021-07-02 op #elif defined(__ia64__)
148 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_IA64
149 137def5f 2021-07-02 op #elif defined(__microblaze__)
150 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_MICROBLAZE
151 137def5f 2021-07-02 op #elif defined(__m68k__)
152 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_M68K
153 71b7eb2f 2021-01-17 op #elif defined(__mips__)
154 137def5f 2021-07-02 op # if defined(__MIPSEL__)
155 137def5f 2021-07-02 op # if defined(__LP64__)
156 71b7eb2f 2021-01-17 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_MIPSEL64
158 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_MIPSEL
160 137def5f 2021-07-02 op # elif defined(__LP64__)
161 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_MIPS64
163 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_MIPS
165 137def5f 2021-07-02 op #elif defined(__nds32__)
166 137def5f 2021-07-02 op # if (BYTE_ORDER == LITTLE_ENDIAN)
167 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_NDS32
169 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_NDS32BE
171 137def5f 2021-07-02 op #elif defined(__nios2__)
172 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_NIOS2
173 137def5f 2021-07-02 op #elif defined(__or1k__)
174 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_OPENRISC
175 137def5f 2021-07-02 op #elif defined(__powerpc64__)
176 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_PPC64
177 137def5f 2021-07-02 op #elif defined(__powerpc__)
178 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_PPC
179 137def5f 2021-07-02 op #elif defined(__riscv)
180 137def5f 2021-07-02 op # if defined(__LP64__)
181 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_RISCV64
183 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_RISCV32
185 137def5f 2021-07-02 op #elif defined(__s390x__)
186 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_S390X
187 137def5f 2021-07-02 op #elif defined(__s390__)
188 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_S390
189 137def5f 2021-07-02 op #elif defined(__sh__)
190 137def5f 2021-07-02 op # if defined(__LP64__)
191 137def5f 2021-07-02 op # if (BYTE_ORDER == LITTLE_ENDIAN)
192 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_SHEL64
194 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_SH64
197 137def5f 2021-07-02 op # if (BYTE_ORDER == LITTLE_ENDIAN)
198 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_SHEL
200 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_SH
203 137def5f 2021-07-02 op #elif defined(__sparc__)
204 137def5f 2021-07-02 op # if defined(__arch64__)
205 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_SPARC64
207 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_SPARC
209 137def5f 2021-07-02 op #elif defined(__xtensa__)
210 137def5f 2021-07-02 op # define SECCOMP_AUDIT_ARCH AUDIT_ARCH_XTENSA
212 71b7eb2f 2021-01-17 op # error "Platform does not support seccomp filter yet"
215 137def5f 2021-07-02 op static struct sock_filter filter[] = {
216 137def5f 2021-07-02 op /* load the *current* architecture */
217 137def5f 2021-07-02 op BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
218 137def5f 2021-07-02 op (offsetof(struct seccomp_data, arch))),
219 137def5f 2021-07-02 op /* ensure it's the same that we've been compiled on */
220 137def5f 2021-07-02 op BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K,
221 137def5f 2021-07-02 op SECCOMP_AUDIT_ARCH, 1, 0),
222 137def5f 2021-07-02 op /* if not, kill the program */
223 137def5f 2021-07-02 op BPF_STMT(BPF_RET | BPF_K, SC_FAIL),
225 137def5f 2021-07-02 op /* load the syscall number */
226 137def5f 2021-07-02 op BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
227 137def5f 2021-07-02 op (offsetof(struct seccomp_data, nr))),
229 137def5f 2021-07-02 op #ifdef __NR_accept
230 137def5f 2021-07-02 op SC_ALLOW(accept),
232 137def5f 2021-07-02 op #ifdef __NR_accept4
233 137def5f 2021-07-02 op SC_ALLOW(accept4),
235 137def5f 2021-07-02 op #ifdef __NR_brk
236 137def5f 2021-07-02 op SC_ALLOW(brk),
238 137def5f 2021-07-02 op #ifdef __NR_clock_gettime
239 137def5f 2021-07-02 op SC_ALLOW(clock_gettime),
241 137def5f 2021-07-02 op #if defined(__x86_64__) && defined(__ILP32__) && defined(__X32_SYSCALL_BIT)
242 137def5f 2021-07-02 op SECCOMP_ALLOW(__NR_clock_gettime & ~__X32_SYSCALL_BIT),
244 137def5f 2021-07-02 op #ifdef __NR_clock_gettime64
245 137def5f 2021-07-02 op SC_ALLOW(clock_gettime64),
247 137def5f 2021-07-02 op #ifdef __NR_close
248 137def5f 2021-07-02 op SC_ALLOW(close),
250 137def5f 2021-07-02 op #ifdef __NR_epoll_ctl
251 137def5f 2021-07-02 op SC_ALLOW(epoll_ctl),
253 137def5f 2021-07-02 op #ifdef __NR_epoll_pwait
254 137def5f 2021-07-02 op SC_ALLOW(epoll_pwait),
256 137def5f 2021-07-02 op #ifdef __NR_epoll_wait
257 137def5f 2021-07-02 op SC_ALLOW(epoll_wait),
259 137def5f 2021-07-02 op #ifdef __NR_exit
260 137def5f 2021-07-02 op SC_ALLOW(exit),
262 137def5f 2021-07-02 op #ifdef __NR_exit_group
263 137def5f 2021-07-02 op SC_ALLOW(exit_group),
265 137def5f 2021-07-02 op #ifdef __NR_fcntl
266 137def5f 2021-07-02 op SC_ALLOW(fcntl),
268 137def5f 2021-07-02 op #ifdef __NR_fcntl64
269 137def5f 2021-07-02 op SC_ALLOW(fcntl64),
271 137def5f 2021-07-02 op #ifdef __NR_fstat
272 137def5f 2021-07-02 op SC_ALLOW(fstat),
274 137def5f 2021-07-02 op #ifdef __NR_getdents64
275 137def5f 2021-07-02 op SC_ALLOW(getdents64),
277 137def5f 2021-07-02 op #ifdef __NR_getpid
278 137def5f 2021-07-02 op SC_ALLOW(getpid),
280 137def5f 2021-07-02 op #ifdef __NR_getrandom
281 137def5f 2021-07-02 op SC_ALLOW(getrandom),
283 137def5f 2021-07-02 op #ifdef __NR_gettimeofday
284 137def5f 2021-07-02 op SC_ALLOW(gettimeofday),
286 137def5f 2021-07-02 op #ifdef __NR_ioctl
287 137def5f 2021-07-02 op /* allow ioctl only on fd 1, glibc doing stuff? */
288 137def5f 2021-07-02 op SC_ALLOW_ARG(__NR_ioctl, 0, 1),
290 137def5f 2021-07-02 op #ifdef __NR_lseek
291 137def5f 2021-07-02 op SC_ALLOW(lseek),
293 137def5f 2021-07-02 op #ifdef __NR_madvise
294 137def5f 2021-07-02 op SC_ALLOW(madvise),
296 137def5f 2021-07-02 op #ifdef __NR_mmap
297 137def5f 2021-07-02 op SC_ALLOW(mmap),
299 137def5f 2021-07-02 op #ifdef __NR_mmap2
300 137def5f 2021-07-02 op SC_ALLOW(mmap2),
302 137def5f 2021-07-02 op #ifdef __NR_munmap
303 137def5f 2021-07-02 op SC_ALLOW(munmap),
305 137def5f 2021-07-02 op #ifdef __NR_newfstatat
306 137def5f 2021-07-02 op SC_ALLOW(newfstatat),
308 137def5f 2021-07-02 op #ifdef __NR_oldfstat
309 137def5f 2021-07-02 op SC_ALLOW(oldfstat),
311 137def5f 2021-07-02 op #ifdef __NR_openat
312 137def5f 2021-07-02 op SC_ALLOW(openat),
314 137def5f 2021-07-02 op #ifdef __NR_prlimit64
315 137def5f 2021-07-02 op SC_ALLOW(prlimit64),
317 137def5f 2021-07-02 op #ifdef __NR_read
318 137def5f 2021-07-02 op SC_ALLOW(read),
320 137def5f 2021-07-02 op #ifdef __NR_recvmsg
321 137def5f 2021-07-02 op SC_ALLOW(recvmsg),
323 137def5f 2021-07-02 op #ifdef __NR_redav
324 137def5f 2021-07-02 op SC_ALLOW(redav),
326 137def5f 2021-07-02 op #ifdef __NR_rt_sigaction
327 137def5f 2021-07-02 op SC_ALLOW(rt_sigaction),
329 137def5f 2021-07-02 op #ifdef __NR_rt_sigreturn
330 137def5f 2021-07-02 op SC_ALLOW(rt_sigreturn),
332 137def5f 2021-07-02 op #ifdef __NR_sendmsg
333 137def5f 2021-07-02 op SC_ALLOW(sendmsg),
335 137def5f 2021-07-02 op #ifdef __NR_statx
336 137def5f 2021-07-02 op SC_ALLOW(statx),
338 137def5f 2021-07-02 op #ifdef __NR_write
339 137def5f 2021-07-02 op SC_ALLOW(write),
341 137def5f 2021-07-02 op #ifdef __NR_writev
342 137def5f 2021-07-02 op SC_ALLOW(writev),
345 137def5f 2021-07-02 op /* disallow enything else */
346 137def5f 2021-07-02 op BPF_STMT(BPF_RET | BPF_K, SC_FAIL),
349 71b7eb2f 2021-01-17 op #ifdef SC_DEBUG
351 71b7eb2f 2021-01-17 op #include <signal.h>
352 71b7eb2f 2021-01-17 op #include <unistd.h>
355 71b7eb2f 2021-01-17 op sandbox_seccomp_violation(int signum, siginfo_t *info, void *ctx)
357 71b7eb2f 2021-01-17 op (void)signum;
360 71b7eb2f 2021-01-17 op fprintf(stderr, "%s: unexpected system call (arch:0x%x,syscall:%d @ %p)\n",
361 71b7eb2f 2021-01-17 op __func__, info->si_arch, info->si_syscall, info->si_call_addr);
366 71b7eb2f 2021-01-17 op sandbox_seccomp_catch_sigsys(void)
368 71b7eb2f 2021-01-17 op struct sigaction act;
369 71b7eb2f 2021-01-17 op sigset_t mask;
371 71b7eb2f 2021-01-17 op memset(&act, 0, sizeof(act));
372 71b7eb2f 2021-01-17 op sigemptyset(&mask);
373 71b7eb2f 2021-01-17 op sigaddset(&mask, SIGSYS);
375 71b7eb2f 2021-01-17 op act.sa_sigaction = &sandbox_seccomp_violation;
376 71b7eb2f 2021-01-17 op act.sa_flags = SA_SIGINFO;
377 8e56d6ad 2021-02-11 op if (sigaction(SIGSYS, &act, NULL) == -1)
378 8e56d6ad 2021-02-11 op fatal("%s: sigaction(SIGSYS): %s",
379 71b7eb2f 2021-01-17 op __func__, strerror(errno));
381 8e56d6ad 2021-02-11 op if (sigprocmask(SIG_UNBLOCK, &mask, NULL) == -1)
382 8e56d6ad 2021-02-11 op fatal("%s: sigprocmask(SIGSYS): %s\n",
383 71b7eb2f 2021-01-17 op __func__, strerror(errno));
385 71b7eb2f 2021-01-17 op #endif /* SC_DEBUG */
388 62e001b0 2021-03-20 op sandbox_server_process(void)
390 71b7eb2f 2021-01-17 op struct sock_fprog prog = {
391 71b7eb2f 2021-01-17 op .len = (unsigned short) (sizeof(filter) / sizeof(filter[0])),
392 71b7eb2f 2021-01-17 op .filter = filter,
395 71b7eb2f 2021-01-17 op #ifdef SC_DEBUG
396 71b7eb2f 2021-01-17 op sandbox_seccomp_catch_sigsys();
399 8e56d6ad 2021-02-11 op if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) == -1)
400 8e56d6ad 2021-02-11 op fatal("%s: prctl(PR_SET_NO_NEW_PRIVS): %s",
401 71b7eb2f 2021-01-17 op __func__, strerror(errno));
403 8e56d6ad 2021-02-11 op if (prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, &prog) == -1)
404 8e56d6ad 2021-02-11 op fatal("%s: prctl(PR_SET_SECCOMP): %s\n",
405 71b7eb2f 2021-01-17 op __func__, strerror(errno));
409 62e001b0 2021-03-20 op sandbox_executor_process(void)
411 62e001b0 2021-03-20 op /* We cannot use seccomp for the executor process because we
412 62e001b0 2021-03-20 op * don't know what the child will do. Also, our filter will
413 62e001b0 2021-03-20 op * be inherited so the child cannot set its own seccomp
419 62e001b0 2021-03-20 op sandbox_logger_process(void)
421 62e001b0 2021-03-20 op /* To be honest, here we could use a seccomp policy to only
422 62e001b0 2021-03-20 op * allow writev(2) and memory allocations. */
426 dafb57b8 2021-01-15 op #elif defined(__OpenBSD__)
428 dafb57b8 2021-01-15 op #include <unistd.h>
431 62e001b0 2021-03-20 op sandbox_server_process(void)
433 fdea6aa0 2021-04-30 op struct vhost *h;
434 fdea6aa0 2021-04-30 op struct location *l;
436 b8e64ccd 2021-03-31 op TAILQ_FOREACH(h, &hosts, vhosts) {
437 fdea6aa0 2021-04-30 op TAILQ_FOREACH(l, &h->locations, locations) {
438 fdea6aa0 2021-04-30 op if (l->dir == NULL)
441 fdea6aa0 2021-04-30 op if (unveil(l->dir, "r") == -1)
442 fdea6aa0 2021-04-30 op fatal("unveil %s for domain %s",
448 881a9dd9 2021-01-16 op if (pledge("stdio recvfd rpath inet", NULL) == -1)
449 8e56d6ad 2021-02-11 op fatal("pledge");
453 62e001b0 2021-03-20 op sandbox_executor_process(void)
455 b8e64ccd 2021-03-31 op struct vhost *h;
456 fdea6aa0 2021-04-30 op struct location *l;
457 8ad1c570 2021-05-09 op struct fcgi *f;
460 b8e64ccd 2021-03-31 op TAILQ_FOREACH(h, &hosts, vhosts) {
461 fdea6aa0 2021-04-30 op TAILQ_FOREACH(l, &h->locations, locations) {
462 fdea6aa0 2021-04-30 op if (l->dir == NULL)
465 fdea6aa0 2021-04-30 op /* r so we can chdir into the correct directory */
466 fdea6aa0 2021-04-30 op if (unveil(l->dir, "rx") == -1)
467 fdea6aa0 2021-04-30 op fatal("unveil %s for domain %s",
468 fdea6aa0 2021-04-30 op l->dir, h->domain);
472 8ad1c570 2021-05-09 op for (i = 0; i < FCGI_MAX; i++) {
473 8ad1c570 2021-05-09 op f = &fcgi[i];
474 8ad1c570 2021-05-09 op if (f->path != NULL) {
475 8ad1c570 2021-05-09 op if (unveil(f->path, "rw") == -1)
476 8ad1c570 2021-05-09 op fatal("unveil %s", f->path);
479 8ad1c570 2021-05-09 op if (f->prog != NULL) {
480 8ad1c570 2021-05-09 op if (unveil(f->prog, "rx") == -1)
481 8ad1c570 2021-05-09 op fatal("unveil %s", f->prog);
486 8ad1c570 2021-05-09 op * rpath: to chdir into the correct directory
487 8ad1c570 2021-05-09 op * proc exec: CGI
488 8ad1c570 2021-05-09 op * dns inet unix: FastCGI
490 8ad1c570 2021-05-09 op if (pledge("stdio rpath sendfd proc exec dns inet unix", NULL))
491 62e001b0 2021-03-20 op err(1, "pledge");
495 62e001b0 2021-03-20 op sandbox_logger_process(void)
497 e952c505 2021-06-15 op if (pledge("stdio recvfd", NULL) == -1)
498 62e001b0 2021-03-20 op err(1, "pledge");
503 62e001b0 2021-03-20 op #warning "No sandbox method known for this OS"
506 62e001b0 2021-03-20 op sandbox_server_process(void)
512 62e001b0 2021-03-20 op sandbox_executor_process(void)
514 2a911637 2021-02-11 op log_notice(NULL, "no sandbox method known for this OS");
518 62e001b0 2021-03-20 op sandbox_logger_process(void)