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process.cpp
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process.cpp
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/*
MIT License
Copyright © 2021-2024 Samuel Venable
Copyright © 2021-2024 devKathy
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#include <unordered_map>
#include <algorithm>
#include <sstream>
#include <thread>
#include <mutex>
#include <cstdlib>
#include <cstddef>
#include <cstdint>
#include <cstring>
#include <climits>
#include <cstdio>
#include "process.hpp"
#if !defined(_WIN32)
#include <signal.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <fcntl.h>
#endif
#if defined(_WIN32)
#include <shlwapi.h>
#include <objbase.h>
#include <tlhelp32.h>
#include <winternl.h>
#include <psapi.h>
#elif (defined(__APPLE__) && defined(__MACH__))
#include <sys/sysctl.h>
#include <libproc.h>
#elif (defined(__linux__) || defined(__ANDROID__))
#include <dirent.h>
#elif (defined(__FreeBSD__) || defined(__DragonFly__) || defined(__OpenBSD__))
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/user.h>
#include <kvm.h>
#elif defined(__NetBSD__)
#include <sys/param.h>
#include <sys/sysctl.h>
#include <kvm.h>
#elif defined(__sun)
#include <kvm.h>
#include <dirent.h>
#include <libproc.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/param.h>
#include <sys/procfs.h>
#endif
#if defined(USE_SDL_POLLEVENT)
#include <SDL.h>
#endif
#if (defined(_WIN32) && defined(_MSC_VER))
#pragma comment(lib, "ntdll.lib")
#endif
#if defined(USE_SDL_POLLEVENT)
#if defined(_MSC_VER)
#if (defined(_WIN32) && !defined(_WIN64))
#pragma comment(lib, __FILE__"\\..\\lib\\x86\\SDL2.lib")
#elif (defined(_WIN32) && defined(_WIN64))
#pragma comment(lib, __FILE__"\\..\\lib\\x64\\SDL2.lib")
#endif
#endif
#endif
namespace {
void message_pump() {
#if defined(_WIN32)
MSG msg;
while (PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
#endif
}
std::vector<std::string> string_split_by_first_equals_sign(std::string str) {
std::size_t pos = 0;
std::vector<std::string> vec;
if ((pos = str.find_first_of("=")) != std::string::npos) {
vec.push_back(str.substr(0, pos));
vec.push_back(str.substr(pos + 1));
}
return vec;
}
#if defined(_WIN32)
enum MEMTYP {
MEMCMD,
MEMENV,
MEMCWD
};
#if !defined(_MSC_VER)
#pragma pack(push, 8)
#else
#include <pshpack8.h>
#endif
/* CURDIR struct from:
https://github.com/processhacker/phnt/
CC BY 4.0 licence */
typedef struct {
UNICODE_STRING DosPath;
HANDLE Handle;
} CURDIR;
/* RTL_DRIVE_LETTER_CURDIR struct from:
https://github.com/processhacker/phnt/
CC BY 4.0 licence */
typedef struct {
USHORT Flags;
USHORT Length;
ULONG TimeStamp;
STRING DosPath;
} RTL_DRIVE_LETTER_CURDIR;
/* RTL_USER_PROCESS_PARAMETERS struct from:
https://github.com/processhacker/phnt/
CC BY 4.0 licence */
typedef struct {
ULONG MaximumLength;
ULONG Length;
ULONG Flags;
ULONG DebugFlags;
HANDLE ConsoleHandle;
ULONG ConsoleFlags;
HANDLE StandardInput;
HANDLE StandardOutput;
HANDLE StandardError;
CURDIR CurrentDirectory;
UNICODE_STRING DllPath;
UNICODE_STRING ImagePathName;
UNICODE_STRING CommandLine;
PVOID Environment;
ULONG StartingX;
ULONG StartingY;
ULONG CountX;
ULONG CountY;
ULONG CountCharsX;
ULONG CountCharsY;
ULONG FillAttribute;
ULONG WindowFlags;
ULONG ShowWindowFlags;
UNICODE_STRING WindowTitle;
UNICODE_STRING DesktopInfo;
UNICODE_STRING ShellInfo;
UNICODE_STRING RuntimeData;
RTL_DRIVE_LETTER_CURDIR CurrentDirectories[32];
ULONG_PTR EnvironmentSize;
ULONG_PTR EnvironmentVersion;
PVOID PackageDependencyData;
ULONG ProcessGroupId;
ULONG LoaderThreads;
UNICODE_STRING RedirectionDllName;
UNICODE_STRING HeapPartitionName;
ULONG_PTR DefaultThreadpoolCpuSetMasks;
ULONG DefaultThreadpoolCpuSetMaskCount;
} RTL_USER_PROCESS_PARAMETERS;
#if !defined(_MSC_VER)
#pragma pack(pop)
#else
#include <poppack.h>
#endif
std::wstring widen(std::string str) {
if (str.empty()) return L"";
std::size_t wchar_count = str.size() + 1;
std::vector<wchar_t> buf(wchar_count);
return std::wstring{ buf.data(), (std::size_t)MultiByteToWideChar(CP_UTF8, 0, str.c_str(), -1, buf.data(), (int)wchar_count) };
}
std::string narrow(std::wstring wstr) {
if (wstr.empty()) return "";
int nbytes = WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), (int)wstr.length(), nullptr, 0, nullptr, nullptr);
std::vector<char> buf(nbytes);
return std::string { buf.data(), (std::size_t)WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), (int)wstr.length(), buf.data(), nbytes, nullptr, nullptr) };
}
HANDLE open_process_with_debug_privilege(ngs::ps::NGS_PROCID proc_id) {
HANDLE proc = nullptr;
HANDLE hToken = nullptr;
LUID luid;
TOKEN_PRIVILEGES tkp;
if (OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken)) {
if (LookupPrivilegeValue(nullptr, SE_DEBUG_NAME, &luid)) {
tkp.PrivilegeCount = 1;
tkp.Privileges[0].Luid = luid;
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
if (AdjustTokenPrivileges(hToken, false, &tkp, sizeof(tkp), nullptr, nullptr)) {
proc = OpenProcess(PROCESS_ALL_ACCESS, false, proc_id);
}
}
CloseHandle(hToken);
}
if (!proc) {
proc = OpenProcess(PROCESS_ALL_ACCESS, false, proc_id);
}
return proc;
}
std::vector<wchar_t> cwd_cmd_env_from_proc(HANDLE proc, int type) {
std::vector<wchar_t> buffer;
PEB peb;
SIZE_T nRead = 0;
ULONG len = 0;
PROCESS_BASIC_INFORMATION pbi;
RTL_USER_PROCESS_PARAMETERS upp;
NTSTATUS status = NtQueryInformationProcess(proc, ProcessBasicInformation, &pbi, sizeof(pbi), &len);
ULONG error = RtlNtStatusToDosError(status);
if (error) return buffer;
ReadProcessMemory(proc, pbi.PebBaseAddress, &peb, sizeof(peb), &nRead);
if (!nRead) return buffer;
ReadProcessMemory(proc, peb.ProcessParameters, &upp, sizeof(upp), &nRead);
if (!nRead) return buffer;
PVOID buf = nullptr; len = 0;
if (type == MEMCWD) {
buf = upp.CurrentDirectory.DosPath.Buffer;
len = upp.CurrentDirectory.DosPath.Length;
} else if (type == MEMENV) {
buf = upp.Environment;
len = (ULONG)upp.EnvironmentSize;
} else if (type == MEMCMD) {
buf = upp.CommandLine.Buffer;
len = upp.CommandLine.Length;
}
buffer.resize(len / 2 + 1);
ReadProcessMemory(proc, buf, &buffer[0], len, &nRead);
if (!nRead) return buffer;
buffer[len / 2] = L'\0';
return buffer;
}
#elif (defined(__APPLE__) && defined(__MACH__))
enum MEMTYP {
MEMCMD,
MEMENV
};
std::vector<std::string> cmd_env_from_proc_id(ngs::ps::NGS_PROCID proc_id, int type) {
std::vector<std::string> vec;
std::size_t len = 0;
int argmax = 0, nargs = 0;
char *procargs = nullptr, *sp = nullptr, *cp = nullptr;
int mib[3];
mib[0] = CTL_KERN;
mib[1] = KERN_ARGMAX;
len = sizeof(argmax);
if (sysctl(mib, 2, &argmax, &len, nullptr, 0)) {
return vec;
}
procargs = (char *)malloc(argmax);
if (!procargs) {
return vec;
}
mib[0] = CTL_KERN;
mib[1] = KERN_PROCARGS2;
mib[2] = proc_id;
len = argmax;
if (sysctl(mib, 3, procargs, &len, nullptr, 0)) {
free(procargs);
return vec;
}
memcpy(&nargs, procargs, sizeof(nargs));
cp = procargs + sizeof(nargs);
for (; cp < &procargs[len]; cp++) {
if (*cp == '\0') break;
}
if (cp == &procargs[len]) {
free(procargs);
return vec;
}
for (; cp < &procargs[len]; cp++) {
if (*cp != '\0') break;
}
if (cp == &procargs[len]) {
free(procargs);
return vec;
}
sp = cp;
int i = 0;
while ((*sp != '\0' || i < nargs) && sp < &procargs[len]) {
if (type && i >= nargs) {
vec.push_back(sp);
} else if (!type && i < nargs) {
vec.push_back(sp);
}
sp += strlen(sp) + 1;
i++;
}
free(procargs);
return vec;
}
#elif defined(__sun)
enum MEMTYP {
MEMCMD,
MEMENV
};
std::vector<std::string> cmd_env_from_proc_id(ngs::ps::NGS_PROCID proc_id, int type) {
std::vector<std::string> vec;
auto proc_psinfo_get = [](psinfo_t *psinfo, ngs::ps::NGS_PROCID proc_id) {
int fd = -1, retval = 0;
char buffer[BUFSIZ];
sprintf(buffer, "/proc/%d/psinfo", proc_id);
if ((fd = open(buffer, O_RDONLY)) < 0) {
return ESRCH;
}
if (pread(fd, psinfo, sizeof(psinfo_t), 0) != sizeof(psinfo_t)) {
retval = errno;
}
close(fd);
return retval;
};
psinfo_t psinfo;
char buffer[BUFSIZ];
int n = 0, err = 0, fd = -1;
std::size_t nread = 0;
unsigned args_size = 0;
char **args = (char **)malloc(ARG_MAX);
if (!args) goto finish;
psinfo.pr_dmodel = 0;
err = proc_psinfo_get(&psinfo, proc_id);
if (err) {
free(args);
goto finish;
}
args_size = sizeof(*args) * ARG_MAX;
sprintf(buffer, "/proc/%d/as", proc_id);
if ((fd = open(buffer, O_RDONLY)) < 0) {
free(args);
goto finish;
}
if (args_size > sizeof(args)) {
free(args);
args = (char **)malloc(args_size);
if (!args) goto finish;
}
if ((long)(nread = pread(fd, args, args_size, (off_t)((type != MEMCMD) ? psinfo.pr_envp : psinfo.pr_argv))) <= 0) {
close(fd);
}
for (n = 0; args[n]; n++) {
int len = 0;
char *arg = nullptr;
if ((long)(nread = pread(fd, buffer, sizeof(buffer), (off_t)args[n])) <= 0) {
close(fd);
break;
}
len = strlen(buffer) + 1;
arg = (char *)malloc(len);
if (!arg) {
if (args) free(args);
vec.clear();
goto finish;
}
memcpy(arg, buffer, len);
vec.push_back(arg);
}
if (args) {
free(args);
}
finish:
if (fd != -1) {
close(fd);
}
return vec;
}
#endif
} // anonymous namespace
namespace ngs::ps {
NGS_PROCID proc_id_from_self() {
#if !defined(_WIN32)
return getpid();
#else
return GetCurrentProcessId();
#endif
}
std::vector<NGS_PROCID> proc_id_enum() {
std::vector<NGS_PROCID> vec;
#if defined(_WIN32)
HANDLE hp = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (!hp) return vec;
PROCESSENTRY32 pe;
pe.dwSize = sizeof(PROCESSENTRY32);
if (Process32First(hp, &pe)) {
do {
message_pump();
vec.push_back(pe.th32ProcessID);
} while (Process32Next(hp, &pe));
}
CloseHandle(hp);
#elif (defined(__APPLE__) && defined(__MACH__))
vec.push_back(0);
std::vector<NGS_PROCID> proc_info;
proc_info.resize(proc_listpids(PROC_ALL_PIDS, 0, nullptr, 0));
int cntp = proc_listpids(PROC_ALL_PIDS, 0, &proc_info[0], sizeof(NGS_PROCID) * proc_info.size());
for (int i = cntp - 1; i >= 0; i--) {
if (proc_info[i] <= 0) continue;
vec.push_back(proc_info[i]);
}
#elif (defined(__linux__) || defined(__ANDROID__) || defined(__sun))
vec.push_back(0);
DIR *proc = opendir("/proc");
struct dirent *ent = nullptr;
NGS_PROCID tgid = 0;
if (proc == nullptr) return vec;
while ((ent = readdir(proc))) {
if (!isdigit(*ent->d_name))
continue;
tgid = strtoul(ent->d_name, nullptr, 10);
vec.push_back(tgid);
}
closedir(proc);
#elif defined(__FreeBSD__)
int cntp = 0;
kvm_t *kd = nullptr;
kinfo_proc *proc_info = nullptr;
const char *nlistf = "/dev/null";
const char *memf = "/dev/null";
kd = kvm_openfiles(nlistf, memf, nullptr, O_RDONLY, nullptr);
if (!kd) return vec;
if ((proc_info = kvm_getprocs(kd, KERN_PROC_PROC, 0, &cntp))) {
for (int i = 0; i < cntp; i++) {
vec.push_back(proc_info[i].ki_pid);
}
}
kvm_close(kd);
#elif defined(__DragonFly__)
int cntp = 0;
kvm_t *kd = nullptr;
kinfo_proc *proc_info = nullptr;
const char *nlistf = "/dev/null";
const char *memf = "/dev/null";
kd = kvm_openfiles(nlistf, memf, nullptr, O_RDONLY, nullptr);
if (!kd) return vec;
if ((proc_info = kvm_getprocs(kd, KERN_PROC_ALL, 0, &cntp))) {
for (int i = 0; i < cntp; i++) {
if (proc_info[i].kp_pid >= 0) {
vec.push_back(proc_info[i].kp_pid);
}
}
}
kvm_close(kd);
#elif defined(__NetBSD__)
int cntp = 0;
kvm_t *kd = nullptr;
kinfo_proc2 *proc_info = nullptr;
kd = kvm_openfiles(nullptr, nullptr, nullptr, KVM_NO_FILES, nullptr);
if (!kd) return vec;
if ((proc_info = kvm_getproc2(kd, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc2), &cntp))) {
for (int i = cntp - 1; i >= 0; i--) {
vec.push_back(proc_info[i].p_pid);
}
}
kvm_close(kd);
#elif defined(__OpenBSD__)
vec.push_back(0);
int cntp = 0;
kvm_t *kd = nullptr;
kinfo_proc *proc_info = nullptr;
kd = kvm_openfiles(nullptr, nullptr, nullptr, KVM_NO_FILES, nullptr);
if (!kd) return vec;
if ((proc_info = kvm_getprocs(kd, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc), &cntp))) {
for (int i = cntp - 1; i >= 0; i--) {
vec.push_back(proc_info[i].p_pid);
}
}
kvm_close(kd);
#endif
#if defined(__sun)
struct pid cur_pid;
kvm_t *kd = nullptr;
struct proc *proc_info = nullptr;
if (!vec.empty()) {
goto finish;
}
kd = kvm_open(nullptr, nullptr, nullptr, O_RDONLY, nullptr);
if (!kd) return vec;
while ((proc_info = kvm_nextproc(kd))) {
if (kvm_kread(kd, (std::uintptr_t)proc_info->p_pidp, &cur_pid, sizeof(cur_pid)) != -1) {
vec.insert(vec.begin(), cur_pid.pid_id);
}
}
kvm_close(kd);
finish:
#endif
std::sort(vec.begin(), vec.end());
auto itr = std::unique(vec.begin(), vec.end());
vec.erase(itr, vec.end());
if (vec.size() == 1 && vec[0] == 0) {
vec.clear();
}
return vec;
}
bool proc_id_exists(NGS_PROCID proc_id) {
if (proc_id < 0) return false;
std::vector<NGS_PROCID> vec;
vec = proc_id_enum();
auto itr = std::find(vec.begin(), vec.end(), proc_id);
return (itr != vec.end());
}
bool proc_id_suspend(NGS_PROCID proc_id) {
if (proc_id < 0) return false;
#if !defined(_WIN32)
return (!kill(proc_id, SIGSTOP));
#else
HANDLE proc = open_process_with_debug_privilege(proc_id);
if (proc == nullptr) return false;
typedef NTSTATUS (__stdcall *NTSP)(IN HANDLE ProcessHandle);
HMODULE hModule = GetModuleHandleW(L"ntdll.dll");
if (!hModule) return false;
FARPROC farProc = GetProcAddress(hModule, "NtSuspendProcess");
if (!farProc) return false;
NTSP NtSuspendProcess = (NTSP)farProc;
NTSTATUS status = NtSuspendProcess(proc);
ULONG error = RtlNtStatusToDosError(status);
CloseHandle(proc);
return (!error);
#endif
}
bool proc_id_resume(NGS_PROCID proc_id) {
if (proc_id < 0) return false;
#if !defined(_WIN32)
return (!kill(proc_id, SIGCONT));
#else
HANDLE proc = open_process_with_debug_privilege(proc_id);
if (proc == nullptr) return false;
typedef NTSTATUS (__stdcall *NTRP)(IN HANDLE ProcessHandle);
HMODULE hModule = GetModuleHandleW(L"ntdll.dll");
if (!hModule) return false;
FARPROC farProc = GetProcAddress(hModule, "NtResumeProcess");
if (!farProc) return false;
NTRP NtResumeProcess = (NTRP)farProc;
NTSTATUS status = NtResumeProcess(proc);
ULONG error = RtlNtStatusToDosError(status);
CloseHandle(proc);
return (!error);
#endif
}
bool proc_id_kill(NGS_PROCID proc_id) {
if (proc_id < 0) return false;
#if !defined(_WIN32)
return (!kill(proc_id, SIGKILL));
#else
HANDLE proc = open_process_with_debug_privilege(proc_id);
if (proc == nullptr) return false;
bool result = TerminateProcess(proc, 0);
CloseHandle(proc);
return result;
#endif
}
std::vector<NGS_PROCID> parent_proc_id_from_proc_id(NGS_PROCID proc_id) {
std::vector<NGS_PROCID> vec;
if (proc_id < 0) return vec;
#if defined(_WIN32)
HANDLE hp = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (!hp) return vec;
PROCESSENTRY32 pe;
pe.dwSize = sizeof(PROCESSENTRY32);
if (Process32First(hp, &pe)) {
do {
if (pe.th32ProcessID == proc_id) {
message_pump();
vec.push_back(pe.th32ParentProcessID);
break;
}
} while (Process32Next(hp, &pe));
}
CloseHandle(hp);
#elif (defined(__APPLE__) && defined(__MACH__))
proc_bsdinfo proc_info;
if (proc_pidinfo(proc_id, PROC_PIDTBSDINFO, 0, &proc_info, sizeof(proc_info)) > 0) {
vec.push_back(proc_info.pbi_ppid);
}
if (vec.empty() && (proc_id == 0 || proc_id == 1))
vec.push_back(0);
#elif (defined(__linux__) || defined(__ANDROID__))
char buffer[BUFSIZ];
sprintf(buffer, "/proc/%d/stat", proc_id);
FILE *stat = fopen(buffer, "r");
if (stat) {
std::size_t size = fread(buffer, sizeof(char), sizeof(buffer), stat);
if (size > 0) {
char *token = nullptr;
if (((token = strtok(buffer, " "))) &&
((token = strtok(nullptr, " "))) &&
((token = strtok(nullptr, " "))) &&
((token = strtok(nullptr, " ")))) {
NGS_PROCID parent_proc_id = strtoul(token, nullptr, 10);
vec.push_back(parent_proc_id);
}
}
fclose(stat);
}
if (vec.empty() && proc_id == 0)
vec.push_back(0);
#elif defined(__FreeBSD__)
int cntp = 0;
kvm_t *kd = nullptr;
kinfo_proc *proc_info = nullptr;
const char *nlistf = "/dev/null";
const char *memf = "/dev/null";
kd = kvm_openfiles(nlistf, memf, nullptr, O_RDONLY, nullptr);
if (!kd) return vec;
if ((proc_info = kvm_getprocs(kd, KERN_PROC_PID, proc_id, &cntp))) {
vec.push_back(proc_info->ki_ppid);
}
kvm_close(kd);
#elif defined(__DragonFly__)
int cntp = 0;
kvm_t *kd = nullptr;
kinfo_proc *proc_info = nullptr;
const char *nlistf = "/dev/null";
const char *memf = "/dev/null";
kd = kvm_openfiles(nlistf, memf, nullptr, O_RDONLY, nullptr);
if (!kd) return vec;
if ((proc_info = kvm_getprocs(kd, KERN_PROC_PID, proc_id, &cntp))) {
if (proc_info->kp_ppid >= 0) {
vec.push_back(proc_info->kp_ppid);
}
}
kvm_close(kd);
if (vec.empty() && proc_id == 0)
vec.push_back(0);
#elif defined(__NetBSD__)
int cntp = 0;
kvm_t *kd = nullptr;
kinfo_proc2 *proc_info = nullptr;
kd = kvm_openfiles(nullptr, nullptr, nullptr, KVM_NO_FILES, nullptr);
if (!kd) return vec;
if ((proc_info = kvm_getproc2(kd, KERN_PROC_PID, proc_id, sizeof(struct kinfo_proc2), &cntp))) {
vec.push_back(proc_info->p_ppid);
}
kvm_close(kd);
#elif defined(__OpenBSD__)
int cntp = 0;
kvm_t *kd = nullptr;
kinfo_proc *proc_info = nullptr;
kd = kvm_openfiles(nullptr, nullptr, nullptr, KVM_NO_FILES, nullptr);
if (!kd) return vec;
if ((proc_info = kvm_getprocs(kd, KERN_PROC_PID, proc_id, sizeof(struct kinfo_proc), &cntp))) {
vec.push_back(proc_info->p_ppid);
}
kvm_close(kd);
if (vec.empty() && proc_id == 0)
vec.push_back(0);
#endif
#if defined(__sun)
pstatus_t status;
char buffer[BUFSIZ];
sprintf(buffer, "/proc/%d/status", proc_id);
int fd = open(buffer, O_RDONLY);
if (fd != -1) {
if (read(fd, &status, sizeof(pstatus_t)) > 0) {
vec.push_back(status.pr_ppid);
}
close(fd);
}
kvm_t *kd = nullptr;
struct proc *proc_info = nullptr;
if (!vec.empty()) {
goto finish;
}
kd = kvm_open(nullptr, nullptr, nullptr, O_RDONLY, nullptr);
if (!kd) return vec;
if ((proc_info = kvm_getproc(kd, proc_id))) {
vec.push_back(proc_info->p_ppid);
}
kvm_close(kd);
finish:
#endif
return vec;
}
std::vector<NGS_PROCID> proc_id_from_parent_proc_id(NGS_PROCID parent_proc_id) {
std::vector<NGS_PROCID> vec;
if (parent_proc_id < 0) return vec;
#if defined(_WIN32)
HANDLE hp = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (!hp) return vec;
PROCESSENTRY32 pe;
pe.dwSize = sizeof(PROCESSENTRY32);
if (Process32First(hp, &pe)) {
do {
message_pump();
if (pe.th32ParentProcessID == parent_proc_id) {
vec.push_back(pe.th32ProcessID);
}
} while (Process32Next(hp, &pe));
}
CloseHandle(hp);
#elif (defined(__APPLE__) && defined(__MACH__))
std::vector<NGS_PROCID> proc_info;
proc_info.resize(proc_listpids(PROC_PPID_ONLY, (uint32_t)parent_proc_id, nullptr, 0));
int cntp = proc_listpids(PROC_PPID_ONLY, (uint32_t)parent_proc_id, &proc_info[0], sizeof(NGS_PROCID) * proc_info.size());
for (int i = cntp - 1; i >= 0; i--) {
if (proc_info[i] <= 0) continue;
if (proc_info[i] == 1 && parent_proc_id == 0) {
vec.push_back(0);
}
vec.push_back(proc_info[i]);
}
#elif (defined(__linux__) || defined(__ANDROID__) || defined(__sun))
std::vector<NGS_PROCID> proc_id = proc_id_enum();
for (std::size_t i = 0; i < proc_id.size(); i++) {
std::vector<NGS_PROCID> ppid = parent_proc_id_from_proc_id(proc_id[i]);
if (!ppid.empty() && ppid[0] == parent_proc_id) {
vec.push_back(proc_id[i]);
}
}
#elif defined(__FreeBSD__)
int cntp = 0;
kvm_t *kd = nullptr;
kinfo_proc *proc_info = nullptr;
const char *nlistf = "/dev/null";
const char *memf = "/dev/null";
kd = kvm_openfiles(nlistf, memf, nullptr, O_RDONLY, nullptr);
if (!kd) return vec;
if ((proc_info = kvm_getprocs(kd, KERN_PROC_PROC, 0, &cntp))) {
for (int i = 0; i < cntp; i++) {
if (proc_info[i].ki_ppid == parent_proc_id) {
vec.push_back(proc_info[i].ki_pid);
}
}
}
kvm_close(kd);
#elif defined(__DragonFly__)
int cntp = 0;
kvm_t *kd = nullptr;
kinfo_proc *proc_info = nullptr;
const char *nlistf = "/dev/null";
const char *memf = "/dev/null";
kd = kvm_openfiles(nlistf, memf, nullptr, O_RDONLY, nullptr);
if (!kd) return vec;
if ((proc_info = kvm_getprocs(kd, KERN_PROC_ALL, 0, &cntp))) {
for (int i = 0; i < cntp; i++) {
if (proc_info[i].kp_pid == 1 && proc_info[i].kp_ppid == 0 && parent_proc_id == 0) {
vec.push_back(0);
}
if (proc_info[i].kp_pid >= 0 && proc_info[i].kp_ppid >= 0 && proc_info[i].kp_ppid == parent_proc_id) {
vec.push_back(proc_info[i].kp_pid);
}
}
}
kvm_close(kd);
#elif defined(__NetBSD__)
int cntp = 0;
kvm_t *kd = nullptr;
kinfo_proc2 *proc_info = nullptr;
kd = kvm_openfiles(nullptr, nullptr, nullptr, KVM_NO_FILES, nullptr);
if (!kd) return vec;
if ((proc_info = kvm_getproc2(kd, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc2), &cntp))) {
for (int i = cntp - 1; i >= 0; i--) {
if (proc_info[i].p_ppid == parent_proc_id) {
vec.push_back(proc_info[i].p_pid);
}
}
}
kvm_close(kd);
#elif defined(__OpenBSD__)
int cntp = 0;
kvm_t *kd = nullptr;
kinfo_proc *proc_info = nullptr;
kd = kvm_openfiles(nullptr, nullptr, nullptr, KVM_NO_FILES, nullptr);
if (!kd) return vec;
if ((proc_info = kvm_getprocs(kd, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc), &cntp))) {
for (int i = cntp - 1; i >= 0; i--) {
if (proc_info[i].p_pid == 1 && proc_info[i].p_ppid == 0 && parent_proc_id == 0) {
vec.push_back(0);
}
if (proc_info[i].p_ppid == parent_proc_id) {
vec.push_back(proc_info[i].p_pid);
}
}
}
kvm_close(kd);
#endif
#if defined(__sun)
struct pid cur_pid;
kvm_t *kd = nullptr;
struct proc *proc_info = nullptr;
if (!vec.empty()) {
goto finish;
}
kd = kvm_open(nullptr, nullptr, nullptr, O_RDONLY, nullptr);
if (!kd) return vec;
while ((proc_info = kvm_nextproc(kd))) {
if (proc_info->p_ppid == parent_proc_id) {
if (kvm_kread(kd, (std::uintptr_t)proc_info->p_pidp, &cur_pid, sizeof(cur_pid)) != -1) {
vec.insert(vec.begin(), cur_pid.pid_id);
}
}
}
kvm_close(kd);
finish:
#endif
std::sort(vec.begin(), vec.end());
auto itr = std::unique(vec.begin(), vec.end());
vec.erase(itr, vec.end());
return vec;
}
std::vector<NGS_PROCID> proc_id_from_exe(std::string exe) {
std::vector<NGS_PROCID> vec;
if (exe.empty()) return vec;
auto fnamecmp = [](std::string fname1, std::string fname2) {
#if defined(_WIN32)
std::transform(fname1.begin(), fname1.end(), fname1.begin(), ::toupper);
std::transform(fname2.begin(), fname2.end(), fname2.begin(), ::toupper);
std::size_t fp = fname2.find_last_of("\\/");
bool abspath = (!fname1.empty() && fname1.length() >= 3 && fname1[1] == ':' &&
(fname1[2] == '\\' || fname1[2] == '/'));
#else
std::size_t fp = fname2.find_last_of("/");
bool abspath = (!fname1.empty() && fname1.length() >= 1 && fname1[0] == '/');
#endif
if (fname1.empty() || fname2.empty() || fp == std::string::npos) return false;
#if defined(_WIN32)
if (abspath && fname1.length() == 3) return (fname1 == fname2.substr(0, fp + 1));
#else
if (abspath && fname1.length() == 1) return (fname1 == fname2.substr(0, fp + 1));
#endif
if (abspath) return (fname1 == fname2 || fname1 == fname2.substr(0, fp));
return (fname1 == fname2.substr(fp + 1));
};
std::vector<NGS_PROCID> proc_id = proc_id_enum();
for (std::size_t i = 0; i < proc_id.size(); i++) {
if (fnamecmp(exe, exe_from_proc_id(proc_id[i]))) {
vec.push_back(proc_id[i]);
}
}
return vec;
}
std::vector<NGS_PROCID> proc_id_from_cwd(std::string cwd) {
std::vector<NGS_PROCID> vec;
if (cwd.empty()) return vec;
auto fnamecmp = [](std::string fname1, std::string fname2) {
#if defined(_WIN32)
std::transform(fname1.begin(), fname1.end(), fname1.begin(), ::toupper);
std::transform(fname2.begin(), fname2.end(), fname2.begin(), ::toupper);
#endif
if (fname1.empty() || fname2.empty()) return false;
return (fname1 == fname2);
};
std::vector<NGS_PROCID> proc_id = proc_id_enum();
for (std::size_t i = 0; i < proc_id.size(); i++) {
if (fnamecmp(cwd, cwd_from_proc_id(proc_id[i]))) {
vec.push_back(proc_id[i]);
}
}
return vec;
}
std::string exe_from_proc_id(NGS_PROCID proc_id) {
std::string path;
if (proc_id < 0) return path;
#if defined(_WIN32)
if (proc_id == GetCurrentProcessId()) {
wchar_t buffer[MAX_PATH];
if (GetModuleFileNameW(nullptr, buffer, sizeof(buffer))) {
wchar_t exe[MAX_PATH];
if (_wfullpath(exe, buffer, MAX_PATH)) {
path = narrow(exe);
}
}
} else {
HANDLE proc = open_process_with_debug_privilege(proc_id);
if (proc == nullptr) return path;
wchar_t buffer[MAX_PATH];
DWORD size = sizeof(buffer);
if (QueryFullProcessImageNameW(proc, 0, buffer, &size)) {
wchar_t exe[MAX_PATH];
if (_wfullpath(exe, buffer, MAX_PATH)) {
path = narrow(exe);
}
}
CloseHandle(proc);
}
#elif (defined(__APPLE__) && defined(__MACH__))
char exe[PROC_PIDPATHINFO_MAXSIZE];
if (proc_pidpath(proc_id, exe, sizeof(exe)) > 0) {
char buffer[PATH_MAX];
if (realpath(exe, buffer)) {
path = buffer;
}
}
#elif (defined(__linux__) || defined(__ANDROID__))
char exe[PATH_MAX];
if (realpath(("/proc/" + std::to_string(proc_id) + "/exe").c_str(), exe)) {
path = exe;
}
#elif (defined(__FreeBSD__) || defined(__DragonFly__))
int mib[4];
std::size_t len = 0;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PATHNAME;
mib[3] = proc_id;
if (!sysctl(mib, 4, nullptr, &len, nullptr, 0)) {
std::vector<char> vecbuff;
vecbuff.resize(len);
char *exe = &vecbuff[0];
if (!sysctl(mib, 4, exe, &len, nullptr, 0)) {
char buffer[PATH_MAX];
if (realpath(exe, buffer)) {
path = buffer;
}
}
}
#elif defined(__NetBSD__)
int mib[4];
std::size_t len = 0;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC_ARGS;
mib[2] = proc_id;
mib[3] = KERN_PROC_PATHNAME;
if (!sysctl(mib, 4, nullptr, &len, nullptr, 0)) {
std::vector<char> vecbuff;
vecbuff.resize(len);
char *exe = &vecbuff[0];
if (!sysctl(mib, 4, exe, &len, nullptr, 0)) {
char buffer[PATH_MAX];
if (realpath(exe, buffer)) {
path = buffer;
}
}
}
#elif defined(__OpenBSD__)
auto is_exe = [](NGS_PROCID proc_id, std::string exe) {
int cntp = 0;
std::string res;
kvm_t *kd = nullptr;
kinfo_file *kif = nullptr;
bool error = false;
kd = kvm_openfiles(nullptr, nullptr, nullptr, KVM_NO_FILES, nullptr);
if (!kd) return res;
if ((kif = kvm_getfiles(kd, KERN_FILE_BYPID, proc_id, sizeof(struct kinfo_file), &cntp))) {
for (int i = 0; i < cntp && kif[i].fd_fd < 0; i++) {
if (kif[i].fd_fd == KERN_FILE_TEXT) {
struct stat st;
fallback:
char buffer[PATH_MAX];
if (!stat(exe.c_str(), &st) && (st.st_mode & S_IXUSR) &&
(st.st_mode & S_IFREG) && realpath(exe.c_str(), buffer) &&
st.st_dev == (dev_t)kif[i].va_fsid && st.st_ino == (ino_t)kif[i].va_fileid) {
res = buffer;
}
if (res.empty() && !error) {
error = true;
std::size_t last_slash_pos = exe.find_last_of("/");
if (last_slash_pos != std::string::npos) {
exe = exe.substr(0, last_slash_pos + 1) + kif[i].p_comm;
goto fallback;
}