sparkles · app-probe.d

#!/usr/bin/env dub
/+ dub.sdl:
    name "android-research-app-probe"
    platforms "linux"
    dflags "-betterC"
    targetPath "build"
+/
/**
 * libc-only probe suitable for a Bionic Android executable (-betterC).
 * Run from the real terminal UI, not adb shell or run-as.
 * Evidence: ../index.md#app-domain-probe.
 * Namespace changes occur only in forked children; no mounts are made.
 */
module 
(module) app_probelibc-only probe suitable for a Bionic Android executable (-betterC).
Run from the real terminal UI, not adb shell or run-as.
Evidence
../index.md#app-domain-probe.
Namespace changes occur only in forked children; no mounts are made.app_probe;

import 
(package) corecore.
(package) core.stdcstdc.
(module) core.stdc.stdioD header file for C99 <stdio.h>
pubs.opengroup.org/onlinepubs/009695399/basedefs/stdio.h.html, stdio.h
Source
core/stdc/stdio.d
@copyrightCopyright Sean Kelly 2005 - 2009.@licenseDistributed under the
Boost Software License 1.0.
(See accompanying file LICENSE)@authorsSean Kelly,
Alex Rønne Petersen@standardsISO/IEC 9899:1999 (E)stdio : 
(alias) app_probe.printf = int core.stdc.stdio.printf(scope const(char*) format, scope const ...) nothrow @nogcprintf, 
(alias) app_probe.fflush = int core.stdc.stdio.fflush(shared(core.stdc.stdio._IO_FILE)* stream) nothrow @nogc @trustedfflush;
import 
(package) corecore.
(package) core.stdcstdc.
(module) core.stdc.errnoD header file for C99.
pubs.opengroup.org/onlinepubs/009695399/basedefs/errno.h.html, errno.h
Source
core/stdc/errno.d
@copyrightCopyright Sean Kelly 2005 - 2009.@licenseDistributed under the
Boost Software License 1.0.
(See accompanying file LICENSE)@authorsSean Kelly, Alex Rønne Petersen@standardsISO/IEC 9899:1999 (E)errno : 
(alias) app_probe.errno = int core.stdc.errno.__errno_location() nothrow @nogc ref @trustederrno;
import 
(package) corecore.
(package) core.syssys.
(package) core.sys.posixposix.
(module) core.sys.posix.unistdD header file for POSIX.
@copyrightCopyright Sean Kelly 2005 - 2009.@licenseBoost License 1.0.@authorsSean Kelly@standardsThe Open Group Base Specifications Issue 8, IEEE Std 1003.1, 2024 Editionunistd : 
(alias) app_probe.getuid = uint core.sys.posix.unistd.getuid() nothrow @nogc @trustedgetuid, 
(alias) app_probe.getgid = uint core.sys.posix.unistd.getgid() nothrow @nogc @trustedgetgid, 
(alias) app_probe.fork = int core.sys.posix.unistd.fork() nothrow @nogc @trustedfork, 
(alias) app_probe.read = long core.sys.posix.unistd.read(int, void*, ulong) nothrow @nogcread, 
(alias) app_probe.close = int core.sys.posix.unistd.close(int) nothrow @nogc @trustedclose, 
(alias) app_probe._exit = noreturn core.sys.posix.unistd._exit(int) nothrow @nogc @trusted_exit;
import 
(package) corecore.
(package) core.syssys.
(package) core.sys.posixposix.
(module) core.sys.posix.fcntlD header file for POSIX.
@copyrightCopyright Sean Kelly 2005 - 2009.@licenseBoost License 1.0.@authorsSean Kelly, Alex Rønne Petersen@standardsThe Open Group Base Specifications Issue 6, IEEE Std 1003.1, 2004 Editionfcntl : open, 
(alias constant) app_probe.O_RDONLY = int core.sys.posix.fcntl.O_RDONLY = 0O_RDONLY;
import 
(package) corecore.
(package) core.syssys.
(package) core.sys.posixposix.
(package) core.sys.posix.syssys.
(module) core.sys.posix.sys.waitD header file for POSIX.
@copyrightCopyright Sean Kelly 2005 - 2009.@licenseBoost License 1.0.@authorsSean Kelly, Alex Rønne Petersen@standardsThe Open Group Base Specifications Issue 6, IEEE Std 1003.1, 2004 Editionwait : 
(alias) app_probe.waitpid = int core.sys.posix.sys.wait.waitpid(int, int*, int) nothrow @nogcwaitpid;
import 
(package) corecore.
(package) core.syssys.
(package) core.sys.posixposix.
(package) core.sys.posix.syssys.
(module) core.sys.posix.sys.socketD header file for POSIX.
@copyrightCopyright Sean Kelly 2005 - 2009.@licenseBoost License 1.0.@authorsSean Kelly, Alex Rønne Petersen@standardsThe Open Group Base Specifications Issue 6, IEEE Std 1003.1, 2004 Editionsocket : 
(alias) app_probe.socket = int core.sys.posix.sys.socket.socket(int, int, int) nothrow @nogc @safesocket, 
(alias enum value) app_probe.SOCK_STREAM = core.sys.posix.sys.socket.SOCK_STREAM = 1SOCK_STREAM;

extern(C) int 
int app_probe.unshare(int flags) nothrow @nogcunshare(int 
(parameter) int flagsflags) @nogc nothrow;

void 
void app_probe.showFile(const(char)* path) nothrow @nogcshowFile(const(char)* 
(parameter) const(char)* pathpath) @nogc nothrow
{
    char[4096] 
(local variable) char[4096] bufferbuffer;
    const 
(local variable) const(int) fdfd = open(
int core.sys.posix.fcntl.open64(scope const(char*), int, ...) nothrow @nogcpath, 
(constant) int core.sys.posix.fcntl.O_RDONLY = 0O_RDONLY);
    if (
(local variable) const(int) fdfd < 0)
    {
        
int core.stdc.stdio.printf(scope const(char*) format, scope const ...) nothrow @nogcprintf("%s: errno=%d\n", 
(parameter) const(char)* pathpath, 
int core.stdc.errno.__errno_location() nothrow @nogc ref @trustederrno);
        return;
    }
    
int core.stdc.stdio.printf(scope const(char*) format, scope const ...) nothrow @nogcprintf("%s:\n", 
(parameter) const(char)* pathpath);
    while (true)
    {
        const 
(local variable) const(long) sizesize = 
long core.sys.posix.unistd.read(int, void*, ulong) nothrow @nogcread(
(local variable) const(int) fdfd, 
(local variable) char[4096] bufferbuffer.
(constant) char* char[4096].ptr = &bufferptr, 
(local variable) char[4096] bufferbuffer.
(constant) ulong char[4096].length = 4096LUlength - 1);
        if (
(local variable) const(long) sizesize <= 0)
            break;
        
(local variable) char[4096] bufferbuffer[
(local variable) const(long) sizesize] = 0;
        
int core.stdc.stdio.printf(scope const(char*) format, scope const ...) nothrow @nogcprintf("%s", 
(local variable) char[4096] bufferbuffer.
(constant) char* char[4096].ptr = &bufferptr);
    }
    
int core.stdc.stdio.printf(scope const(char*) format, scope const ...) nothrow @nogcprintf("\n");
    
int core.sys.posix.unistd.close(int) nothrow @nogc @trustedclose(
(local variable) const(int) fdfd);
}

int 
int app_probe.namespaceAttempt(int flags, const(char)* name) nothrow @nogcnamespaceAttempt(int 
(parameter) int flagsflags, const(char)* 
(parameter) const(char)* namename) @nogc nothrow
{
    
int core.stdc.stdio.fflush(shared(core.stdc.stdio._IO_FILE)* stream) nothrow @nogc @trustedfflush(null);
    const 
(local variable) const(int) childchild = 
int core.sys.posix.unistd.fork() nothrow @nogc @trustedfork();
    if (
(local variable) const(int) childchild < 0)
    {
        
int core.stdc.stdio.printf(scope const(char*) format, scope const ...) nothrow @nogcprintf("fork: errno=%d\n", 
int core.stdc.errno.__errno_location() nothrow @nogc ref @trustederrno);
        return 1;
    }
    if (
(local variable) const(int) childchild == 0)
    {
        const 
(local variable) const(int) resultresult = 
int app_probe.unshare(int flags) nothrow @nogcunshare(
(parameter) int flagsflags);
        const 
(local variable) const(int) errorerror = 
int core.stdc.errno.__errno_location() nothrow @nogc ref @trustederrno;
        
int core.stdc.stdio.printf(scope const(char*) format, scope const ...) nothrow @nogcprintf("unshare(%s): result=%d errno=%d\n", 
(parameter) const(char)* namename, 
(local variable) const(int) resultresult, 
(local variable) const(int) resultresult < 0 ? 
(local variable) const(int) errorerror : 0);
        
int core.stdc.stdio.fflush(shared(core.stdc.stdio._IO_FILE)* stream) nothrow @nogc @trustedfflush(null);
        
noreturn core.sys.posix.unistd._exit(int) nothrow @nogc @trusted_exit(0);
    }
    int 
(local variable) int statusstatus;
    return 
int core.sys.posix.sys.wait.waitpid(int, int*, int) nothrow @nogcwaitpid(
(local variable) const(int) childchild, &
(local variable) int statusstatus, 0) != 
(local variable) const(int) childchild || 
(local variable) int statusstatus != 0;
}

extern(C) int 
int app_probe.main() nothrow @nogcmain() @nogc nothrow
{
    
int core.stdc.stdio.printf(scope const(char*) format, scope const ...) nothrow @nogcprintf("uid=%u gid=%u\n", 
uint core.sys.posix.unistd.getuid() nothrow @nogc @trustedgetuid(), 
uint core.sys.posix.unistd.getgid() nothrow @nogc @trustedgetgid());
    
void app_probe.showFile(const(char)* path) nothrow @nogcshowFile("/proc/self/attr/current");
    
void app_probe.showFile(const(char)* path) nothrow @nogcshowFile("/proc/self/status");
    int 
(local variable) int failurefailure = 
int app_probe.namespaceAttempt(int flags, const(char)* name) nothrow @nogcnamespaceAttempt(0x10000000, "CLONE_NEWUSER");
    
(local variable) int failurefailure |= 
int app_probe.namespaceAttempt(int flags, const(char)* name) nothrow @nogcnamespaceAttempt(0x00020000, "CLONE_NEWNS");
    
(local variable) int failurefailure |= 
int app_probe.namespaceAttempt(int flags, const(char)* name) nothrow @nogcnamespaceAttempt(0x10000000 | 0x00020000, "CLONE_NEWUSER|CLONE_NEWNS");
    const 
(local variable) const(int) fdfd = 
int core.sys.posix.sys.socket.socket(int, int, int) nothrow @nogc @safesocket(40, 
(enum value) core.sys.posix.sys.socket.SOCK_STREAM = 1SOCK_STREAM, 0); // Linux AF_VSOCK.
    const 
(local variable) const(int) errorerror = 
int core.stdc.errno.__errno_location() nothrow @nogc ref @trustederrno;
    
int core.stdc.stdio.printf(scope const(char*) format, scope const ...) nothrow @nogcprintf("socket(AF_VSOCK): fd=%d errno=%d\n", 
(local variable) const(int) fdfd, 
(local variable) const(int) fdfd < 0 ? 
(local variable) const(int) errorerror : 0);
    if (
(local variable) const(int) fdfd >= 0)
        
int core.sys.posix.unistd.close(int) nothrow @nogc @trustedclose(
(local variable) const(int) fdfd);
    
int core.stdc.stdio.printf(scope const(char*) format, scope const ...) nothrow @nogcprintf("Capability absence/rejection is a result, not a probe failure.\n");
    return 
(local variable) int failurefailure;
}