diff options
| -rw-r--r-- | src/inspircd.cpp | 45 |
1 files changed, 29 insertions, 16 deletions
diff --git a/src/inspircd.cpp b/src/inspircd.cpp index 86223ae95..1a856898f 100644 --- a/src/inspircd.cpp +++ b/src/inspircd.cpp @@ -595,23 +595,36 @@ InspIRCd::InspIRCd(int argc, char** argv) : } } - if (isatty(0) && isatty(1) && isatty(2)) + /* Explicitly shut down stdio's stdin/stdout/stderr. + * + * The previous logic here was to only do this if stdio was connected to a controlling + * terminal. However, we must do this always to avoid information leaks and other + * problems related to stdio. + * + * The only exception is if we are in debug mode. + * + * -- nenolod + */ + if ((!do_nofork) && (!do_testsuite) && (!Config->cmdline.forcedebug)) { - /* We didn't start from a TTY, we must have started from a background process - - * e.g. we are restarting, or being launched by cron. Dont kill parent, and dont - * close stdin/stdout - */ - if ((!do_nofork) && (!do_testsuite)) - { - fclose(stdin); - fclose(stderr); - if (!Config->cmdline.forcedebug) - fclose(stdout); - } - else - { - Logs->Log("STARTUP", DEFAULT,"Keeping pseudo-tty open as we are running in the foreground."); - } + int fd; + + fclose(stdin); + fclose(stderr); + fclose(stdout); + + fd = open("/dev/null", O_RDWR); + if (dup2(fd, 0) < 0) + Logs->Log("STARTUP", DEFAULT, "Failed to dup /dev/null to stdin."); + if (dup2(fd, 1) < 0) + Logs->Log("STARTUP", DEFAULT, "Failed to dup /dev/null to stdout."); + if (dup2(fd, 2) < 0) + Logs->Log("STARTUP", DEFAULT, "Failed to dup /dev/null to stderr."); + close(fd); + } + else + { + Logs->Log("STARTUP", DEFAULT,"Keeping pseudo-tty open as we are running in the foreground."); } #else WindowsIPC = new IPC; |