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cosmopolitan/tool/net/sandbox.h

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Add seccomp bpf sandboxing to redbean It's now possible to pass the `-S` or `-SS` flags to sandbox redbean worker proecsses after they've been forked. The first `-S` flag is intended to be a permissive builtin policy that limits system calls to only that which the various parts of redbean serving need. The second `-SS` flag is intended to be more restrictive, preventing things like the Lua extensions you download off the web from using the HTTP client or sockets APIs. In upcoming changes you'll be able to implement your own Berkeley Packet Filter sandbox programs and load them via Lua.
2022-04-18 08:54:42 -07:00
#ifndef COSMOPOLITAN_TOOL_NET_SANDBOX_H_
#define COSMOPOLITAN_TOOL_NET_SANDBOX_H_
Introduce `#include <cosmo.h>` to toolchain users This change improves the way internal APIs are being hidden behind the `COSMO` define. The cosmo.h header will take care of defining that, so that a separate define statement isn't needed. This change also does a lot more to define which APIs are standard, and which belong to Cosmo.
2023-06-09 18:02:06 -07:00
#include "libc/calls/struct/bpf.internal.h"
#include "libc/calls/struct/filter.internal.h"
#include "libc/calls/struct/seccomp.internal.h"
Make more fixes and improvements This change attempts to fix some report build issues. It also builds upon development work described in previous changes.
2022-04-21 09:15:36 -07:00
#include "libc/sysv/consts/audit.h"
Add seccomp bpf sandboxing to redbean It's now possible to pass the `-S` or `-SS` flags to sandbox redbean worker proecsses after they've been forked. The first `-S` flag is intended to be a permissive builtin policy that limits system calls to only that which the various parts of redbean serving need. The second `-SS` flag is intended to be more restrictive, preventing things like the Lua extensions you download off the web from using the HTTP client or sockets APIs. In upcoming changes you'll be able to implement your own Berkeley Packet Filter sandbox programs and load them via Lua.
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// clang-format off
#define _SECCOMP_MACHINE(MAGNUM) \
BPF_STMT(BPF_LD | BPF_W | BPF_ABS, offsetof(struct seccomp_data, arch)), \
Strengthen the pledge() polyfill
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BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, MAGNUM, 1, 0), \
Add seccomp bpf sandboxing to redbean It's now possible to pass the `-S` or `-SS` flags to sandbox redbean worker proecsses after they've been forked. The first `-S` flag is intended to be a permissive builtin policy that limits system calls to only that which the various parts of redbean serving need. The second `-SS` flag is intended to be more restrictive, preventing things like the Lua extensions you download off the web from using the HTTP client or sockets APIs. In upcoming changes you'll be able to implement your own Berkeley Packet Filter sandbox programs and load them via Lua.
2022-04-18 08:54:42 -07:00
BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS)
#define _SECCOMP_LOAD_SYSCALL_NR() \
BPF_STMT(BPF_LD | BPF_W | BPF_ABS, offsetof(struct seccomp_data, nr))
#define _SECCOMP_ALLOW_SYSCALL(MAGNUM) \
BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, MAGNUM, 0, 1), \
BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_ALLOW)
Make more fixes and improvements This change attempts to fix some report build issues. It also builds upon development work described in previous changes.
2022-04-21 09:15:36 -07:00
#define _SECCOMP_TRAP_SYSCALL(MAGNUM, DATA) \
BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, MAGNUM, 0, 1), \
BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_TRAP | ((DATA) & SECCOMP_RET_DATA))
#define _SECCOMP_TRACE_SYSCALL(MAGNUM, DATA) \
BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, MAGNUM, 0, 1), \
BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_TRACE | ((DATA) & SECCOMP_RET_DATA))
Add seccomp bpf sandboxing to redbean It's now possible to pass the `-S` or `-SS` flags to sandbox redbean worker proecsses after they've been forked. The first `-S` flag is intended to be a permissive builtin policy that limits system calls to only that which the various parts of redbean serving need. The second `-SS` flag is intended to be more restrictive, preventing things like the Lua extensions you download off the web from using the HTTP client or sockets APIs. In upcoming changes you'll be able to implement your own Berkeley Packet Filter sandbox programs and load them via Lua.
2022-04-18 08:54:42 -07:00
#define _SECCOMP_LOG_AND_RETURN_ERRNO(MAGNUM) \
Make more fixes and improvements This change attempts to fix some report build issues. It also builds upon development work described in previous changes.
2022-04-21 09:15:36 -07:00
BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_ERRNO | ((MAGNUM) & SECCOMP_RET_DATA))
Add seccomp bpf sandboxing to redbean It's now possible to pass the `-S` or `-SS` flags to sandbox redbean worker proecsses after they've been forked. The first `-S` flag is intended to be a permissive builtin policy that limits system calls to only that which the various parts of redbean serving need. The second `-SS` flag is intended to be more restrictive, preventing things like the Lua extensions you download off the web from using the HTTP client or sockets APIs. In upcoming changes you'll be able to implement your own Berkeley Packet Filter sandbox programs and load them via Lua.
2022-04-18 08:54:42 -07:00
Make improvements - Add rusage to redbean Lua API - Add more redbean documentation - Add pledge() to redbean Lua API - Polyfill OpenBSD pledge() for Linux - Increase PATH_MAX limit to 1024 characters - Untrack sibling processes after fork() on Windows
2022-04-28 09:42:36 -07:00
#define _SECCOMP_LOG_AND_KILL_PROCESS() \
BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_ERRNO | SECCOMP_RET_KILL_PROCESS)
Add seccomp bpf sandboxing to redbean It's now possible to pass the `-S` or `-SS` flags to sandbox redbean worker proecsses after they've been forked. The first `-S` flag is intended to be a permissive builtin policy that limits system calls to only that which the various parts of redbean serving need. The second `-SS` flag is intended to be more restrictive, preventing things like the Lua extensions you download off the web from using the HTTP client or sockets APIs. In upcoming changes you'll be able to implement your own Berkeley Packet Filter sandbox programs and load them via Lua.
2022-04-18 08:54:42 -07:00
#endif /* COSMOPOLITAN_TOOL_NET_SANDBOX_H_ */
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