337 lines
16 KiB
C++
337 lines
16 KiB
C++
/**
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* @author Christian Burger (christian@krikkel.de)
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* @todo Switch over to <seccomp.h>? For resolving system call numbers?
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* Maybe keep the current solution as a fallback?
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* @todo catch `out of range` exception from stoi()
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*
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* Contains mapping of system calls numbers to names from original dev system:
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* "Linux 5.13.0-28-generic #31~20.04.1-Ubuntu SMP \
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* Wed Jan 19 14:08:10 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux"
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* See comment at the end for the actual command to gather mapping information.
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*/
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#ifndef NDEBUG
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#include "Debug.hpp"
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#include <cstring>
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#include <filesystem>
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#include <cstdio>
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#define BUFFER_SIZE 128
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namespace krikkel
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{
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using std::filesystem::is_directory;
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Debug::Debug()
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{
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string directory = ".";
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if(is_directory("sandbox"))
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directory = "./sandbox";
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logFile = fstream(directory + "/debug.log", fstream::out | fstream::app);//| fstream::trunc);
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logFile << endl << endl << "New instance of class Debug." << endl;
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logFile << getUname();
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logFile.flush();
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}
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string Debug::getUname()
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{
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string result = "";
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char buffer[BUFFER_SIZE];
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FILE *unameProcess = popen("uname -srvmpio", "r");
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if(unameProcess && fgets(buffer, BUFFER_SIZE, unameProcess))
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result = buffer;
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pclose(unameProcess);
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return result;
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}
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string Debug::getTimestamp()
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{
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time_t now = std::time(NULL);
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tm *localNow = localtime(&now);
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static char formattedLocalNow[32];
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strftime(formattedLocalNow, 32, "%c", localNow);
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return formattedLocalNow;
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}
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void Debug::log(string message, string fileName, int lineNo, string functionName)
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{
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string output = "";
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size_t position = message.find("sysCall(");
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if(position != string::npos)
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{
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size_t end = message.find_first_not_of("0123456789", position + 8);
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unsigned long long systemCallNumber = std::stoi(message.substr(position + 8, end - position - 8));
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string systemCallName = strlen(syscalls[systemCallNumber]) != 0 ? syscalls[systemCallNumber]
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: "unknown_system_call";
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if(systemCallNumber < MAX_NUMBER_OF_SYSCALLS)
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output = message.replace(position, end - position + 1, systemCallName + "(");
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}
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if(output == "")
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output = message;
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logFile << getTimestamp() << ": " << output << " (in "
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<< fileName.substr(fileName.rfind('/') + 1) << ":"
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<< lineNo << " in " << functionName << "())" << endl;
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logFile.flush();
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}
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Debug *Debug::getInstance()
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{
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static Debug *debug = new Debug();
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return debug;
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}
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const char *Debug::syscalls[MAX_NUMBER_OF_SYSCALLS] = {[0] = "read",[1] = "write",
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[2] = "open",[3] = "close",
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[4] = "stat",[5] = "fstat",
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[6] = "lstat",[7] = "poll",
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[8] = "lseek",[9] = "mmap",
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[10] = "mprotect",[11] = "munmap",
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[12] = "brk",[13] = "rt_sigaction",
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[14] = "rt_sigprocmask",[15] = "rt_sigreturn",
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[16] = "ioctl",[17] = "pread64",
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[18] = "pwrite64",[19] = "readv",
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[20] = "writev",[21] = "access",
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[22] = "pipe",[23] = "select",
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[24] = "sched_yield",[25] = "mremap",
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[26] = "msync",[27] = "mincore",
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[28] = "madvise",[29] = "shmget",
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[30] = "shmat",[31] = "shmctl",
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[32] = "dup",[33] = "dup2",
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[34] = "pause",[35] = "nanosleep",
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[36] = "getitimer",[37] = "alarm",
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[38] = "setitimer",[39] = "getpid",
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[40] = "sendfile",[41] = "socket",
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[42] = "connect",[43] = "accept",
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[44] = "sendto",[45] = "recvfrom",
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[46] = "sendmsg",[47] = "recvmsg",
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[48] = "shutdown",[49] = "bind",
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[50] = "listen",[51] = "getsockname",
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[52] = "getpeername",[53] = "socketpair",
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[54] = "setsockopt",[55] = "getsockopt",
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[56] = "clone",[57] = "fork",
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[58] = "vfork",[59] = "execve",
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[60] = "exit",[61] = "wait4",
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[62] = "kill",[63] = "uname",
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[64] = "semget",[65] = "semop",
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[66] = "semctl",[67] = "shmdt",
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[68] = "msgget",[69] = "msgsnd",
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[70] = "msgrcv",[71] = "msgctl",
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[72] = "fcntl",[73] = "flock",
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[74] = "fsync",[75] = "fdatasync",
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[76] = "truncate",[77] = "ftruncate",
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[78] = "getdents",[79] = "getcwd",
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[80] = "chdir",[81] = "fchdir",
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[82] = "rename",[83] = "mkdir",
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[84] = "rmdir",[85] = "creat",
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[86] = "link",[87] = "unlink",
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[88] = "symlink",[89] = "readlink",
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[90] = "chmod",[91] = "fchmod",
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[92] = "chown",[93] = "fchown",
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[94] = "lchown",[95] = "umask",
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[96] = "gettimeofday",[97] = "getrlimit",
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[98] = "getrusage",[99] = "sysinfo",
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[100] = "times",[101] = "ptrace",
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[102] = "getuid",[103] = "syslog",
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[104] = "getgid",[105] = "setuid",
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[106] = "setgid",[107] = "geteuid",
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[108] = "getegid",[109] = "setpgid",
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[110] = "getppid",[111] = "getpgrp",
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[112] = "setsid",[113] = "setreuid",
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[114] = "setregid",[115] = "getgroups",
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[116] = "setgroups",[117] = "setresuid",
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[118] = "getresuid",[119] = "setresgid",
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[120] = "getresgid",[121] = "getpgid",
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[122] = "setfsuid",[123] = "setfsgid",
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[124] = "getsid",[125] = "capget",
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[126] = "capset",[127] = "rt_sigpending",
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[128] = "rt_sigtimedwait",[129] = "rt_sigqueueinfo",
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[130] = "rt_sigsuspend",[131] = "sigaltstack",
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[132] = "utime",[133] = "mknod",
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[134] = "uselib",[135] = "personality",
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[136] = "ustat",[137] = "statfs",
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[138] = "fstatfs",[139] = "sysfs",
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[140] = "getpriority",[141] = "setpriority",
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[142] = "sched_setparam",[143] = "sched_getparam",
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[144] = "sched_setscheduler",[145] = "sched_getscheduler",
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[146] = "sched_get_priority_max",[147] = "sched_get_priority_min",
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[148] = "sched_rr_get_interval",[149] = "mlock",
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[150] = "munlock",[151] = "mlockall",
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[152] = "munlockall",[153] = "vhangup",
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[154] = "modify_ldt",[155] = "pivot_root",
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[156] = "",[157] = "prctl",
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[158] = "arch_prctl",[159] = "adjtimex",
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[160] = "setrlimit",[161] = "chroot",
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[162] = "sync",[163] = "acct",
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[164] = "settimeofday",[165] = "mount",
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[166] = "",[167] = "swapon",
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[168] = "swapoff",[169] = "reboot",
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[170] = "sethostname",[171] = "setdomainname",
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[172] = "iopl",[173] = "ioperm",
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[174] = "",[175] = "init_module",
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[176] = "delete_module",[177] = "",
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[178] = "",[179] = "quotactl",
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[180] = "",[181] = "",
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[182] = "",[183] = "",
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[184] = "",[185] = "",
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[186] = "gettid",[187] = "readahead",
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[188] = "setxattr",[189] = "lsetxattr",
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[190] = "fsetxattr",[191] = "getxattr",
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[192] = "lgetxattr",[193] = "fgetxattr",
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[194] = "listxattr",[195] = "llistxattr",
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[196] = "flistxattr",[197] = "removexattr",
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[198] = "lremovexattr",[199] = "fremovexattr",
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[200] = "tkill",[201] = "time",
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[202] = "futex",[203] = "sched_setaffinity",
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[204] = "sched_getaffinity",[205] = "set_thread_area",
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[206] = "io_setup",[207] = "io_destroy",
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[208] = "io_getevents",[209] = "io_submit",
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[210] = "io_cancel",[211] = "get_thread_area",
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[212] = "",[213] = "epoll_create",
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[214] = "",[215] = "",
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[216] = "remap_file_pages",[217] = "getdents64",
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[218] = "set_tid_address",[219] = "restart_syscall",
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[220] = "semtimedop",[221] = "fadvise64",
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[222] = "timer_create",[223] = "timer_settime",
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[224] = "timer_gettime",[225] = "timer_getoverrun",
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[226] = "timer_delete",[227] = "clock_settime",
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[228] = "clock_gettime",[229] = "clock_getres",
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[230] = "clock_nanosleep",[231] = "exit_group",
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[232] = "epoll_wait",[233] = "epoll_ctl",
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[234] = "tgkill",[235] = "utimes",
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[236] = "",[237] = "mbind",
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[238] = "set_mempolicy",[239] = "get_mempolicy",
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[240] = "mq_open",[241] = "mq_unlink",
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[242] = "mq_timedsend",[243] = "mq_timedreceive",
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[244] = "mq_notify",[245] = "mq_getsetattr",
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[246] = "kexec_load",[247] = "waitid",
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[248] = "add_key",[249] = "request_key",
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[250] = "keyctl",[251] = "ioprio_set",
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[252] = "ioprio_get",[253] = "inotify_init",
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[254] = "inotify_add_watch",[255] = "inotify_rm_watch",
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[256] = "migrate_pages",[257] = "openat",
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[258] = "mkdirat",[259] = "mknodat",
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[260] = "fchownat",[261] = "futimesat",
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[262] = "newfstatat",[263] = "unlinkat",
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[264] = "renameat",[265] = "linkat",
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[266] = "symlinkat",[267] = "readlinkat",
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[268] = "fchmodat",[269] = "faccessat",
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[270] = "pselect6",[271] = "ppoll",
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[272] = "unshare",[273] = "set_robust_list",
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[274] = "get_robust_list",[275] = "splice",
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[276] = "tee",[277] = "sync_file_range",
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[278] = "vmsplice",[279] = "move_pages",
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[280] = "utimensat",[281] = "epoll_pwait",
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[282] = "signalfd",[283] = "timerfd_create",
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[284] = "eventfd",[285] = "fallocate",
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[286] = "timerfd_settime",[287] = "timerfd_gettime",
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[288] = "accept4",[289] = "signalfd4",
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[290] = "eventfd2",[291] = "epoll_create1",
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[292] = "dup3",[293] = "pipe2",
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[294] = "inotify_init1",[295] = "preadv",
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[296] = "pwritev",[297] = "rt_tgsigqueueinfo",
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[298] = "perf_event_open",[299] = "recvmmsg",
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[300] = "fanotify_init",[301] = "fanotify_mark",
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[302] = "prlimit64",[303] = "name_to_handle_at",
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[304] = "open_by_handle_at",[305] = "clock_adjtime",
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[306] = "syncfs",[307] = "sendmmsg",
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[308] = "setns",[309] = "getcpu",
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[310] = "process_vm_readv",[311] = "process_vm_writev",
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[312] = "kcmp",[313] = "finit_module",
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[314] = "sched_setattr",[315] = "sched_getattr",
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[316] = "renameat2",[317] = "seccomp",
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[318] = "getrandom",[319] = "memfd_create",
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[320] = "kexec_file_load",[321] = "bpf",
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[322] = "execveat",[323] = "userfaultfd",
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[324] = "membarrier",[325] = "mlock2",
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[326] = "copy_file_range",[327] = "preadv2",
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[328] = "pwritev2",[329] = "pkey_mprotect",
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[330] = "pkey_alloc",[331] = "pkey_free",
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[332] = "statx",[333] = "io_pgetevents",
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[334] = "rseq",[335] = "",
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[336] = "",[337] = "",
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[338] = "",[339] = "",
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[340] = "",[341] = "",
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[342] = "",[343] = "",
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[344] = "",[345] = "",
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[346] = "",[347] = "",
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[348] = "",[349] = "",
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[350] = "",[351] = "",
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[352] = "",[353] = "",
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[354] = "",[355] = "",
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[356] = "",[357] = "",
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[358] = "",[359] = "",
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[360] = "",[361] = "",
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[362] = "",[363] = "",
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[364] = "",[365] = "",
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[366] = "",[367] = "",
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[368] = "",[369] = "",
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[370] = "",[371] = "",
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[372] = "",[373] = "",
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[374] = "",[375] = "",
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[376] = "",[377] = "",
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[378] = "",[379] = "",
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[380] = "",[381] = "",
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[382] = "",[383] = "",
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[384] = "",[385] = "",
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[386] = "",[387] = "",
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[388] = "",[389] = "",
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[390] = "",[391] = "",
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[392] = "",[393] = "",
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[394] = "",[395] = "",
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[396] = "",[397] = "",
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[398] = "",[399] = "",
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[400] = "",[401] = "",
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[402] = "",[403] = "",
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[404] = "",[405] = "",
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[406] = "",[407] = "",
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[408] = "",[409] = "",
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[410] = "",[411] = "",
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[412] = "",[413] = "",
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[414] = "",[415] = "",
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[416] = "",[417] = "",
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[418] = "",[419] = "",
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[420] = "",[421] = "",
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[422] = "",[423] = "",
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[424] = "pidfd_send_signal",[425] = "io_uring_setup",
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[426] = "io_uring_enter",[427] = "io_uring_register",
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[428] = "open_tree",[429] = "move_mount",
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[430] = "fsopen",[431] = "fsconfig",
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[432] = "fsmount",[433] = "fspick",
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[434] = "pidfd_open",[435] = "clone3" };
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}
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#endif
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/*
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Following command in part thx to:
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https://unix.stackexchange.com/questions/445507/syscall-number-%E2%86%92-name-mapping-at-runtime
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Command to create mapping of system call number to system call name:
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#!/bin/bash
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awk 'BEGIN { print "#include <sys/syscall.h>" }
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/p_syscall_meta/ { syscall = substr($NF, 19);
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printf "[SYS_%s] = \"%s\", \n", syscall, syscall }' /proc/kallsyms \
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| gcc -E -P - \
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| sort -V \
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| grep "\[[0-9]" \
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| awk 'BEGIN {expectedIndex = 0;}
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{ actualIndex = $1;
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gsub(/[\[\]]/, "", actualIndex);
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if (actualIndex != expectedIndex)
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for (; expectedIndex < actualIndex; expectedIndex++)
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print "[" expectedIndex "] = \"\",";
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print $0; expectedIndex++ }' \
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| tr -d "\n" \
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| sed -e "s/^/const char *syscalls[1024] = {/; s/,$/ };/" \
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| sed -e 's/,/,\n /2;P;D' \
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| cat - <(echo) # new line at the end
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*/ |