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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <comphelper/debuggerinfo.hxx>
#include <cassert>
#include <cstring>
#include <ctype.h>
#if defined(_WIN32)
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#elif defined MACOSX
#include <unistd.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#elif defined UNX
#include <unistd.h>
#include <fcntl.h>
#endif
namespace comphelper
{
#if defined DBG_UTIL
bool isDebuggerAttached()
{
#if defined(_WIN32)
return IsDebuggerPresent();
#elif defined MACOSX
// https://developer.apple.com/library/archive/qa/qa1361/_index.html
int junk;
int mib[4];
struct kinfo_proc info;
size_t size;
// Initialize the flags so that, if sysctl fails for some bizarre
// reason, we get a predictable result.
info.kp_proc.p_flag = 0;
// Initialize mib, which tells sysctl the info we want, in this case
// we're looking for information about a specific process ID.
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PID;
mib[3] = getpid();
// Call sysctl.
size = sizeof(info);
junk = sysctl(mib, sizeof(mib) / sizeof(*mib), &info, &size, nullptr, 0);
assert(junk == 0);
// We're being debugged if the P_TRACED flag is set.
return ((info.kp_proc.p_flag & P_TRACED) != 0);
#elif defined LINUX
char buf[4096];
int fd = open("/proc/self/status", O_RDONLY);
if (fd < 0)
return false;
int size = read(fd, buf, sizeof(buf) - 1);
close(fd);
if (size < 0)
return false;
assert(size < int(sizeof(buf)) - 1);
buf[sizeof(buf) - 1] = '\0';
// "TracerPid: <pid>" for pid != 0 means something is attached
const char* pos = strstr(buf, "TracerPid:");
if (pos == nullptr)
return false;
pos += strlen("TracerPid:");
while (*pos != '\n' && isspace(*pos))
++pos;
return *pos != '\n' && *pos != '0';
#else
return false; // feel free to add your platform
#endif
}
#endif
} // namespace comphelper
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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