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syslog.rs
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145 lines (126 loc) · 4.24 KB
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pub(crate) use syslog::make_module;
#[pymodule(name = "syslog")]
mod syslog {
use crate::common::lock::PyRwLock;
use crate::vm::{
builtins::{PyStr, PyStrRef},
function::{OptionalArg, OptionalOption},
utils::ToCString,
PyObjectRef, PyPayload, PyResult, VirtualMachine,
};
use std::{ffi::CStr, os::raw::c_char};
#[pyattr]
use libc::{
LOG_ALERT, LOG_AUTH, LOG_CONS, LOG_CRIT, LOG_DAEMON, LOG_DEBUG, LOG_EMERG, LOG_ERR,
LOG_INFO, LOG_KERN, LOG_LOCAL0, LOG_LOCAL1, LOG_LOCAL2, LOG_LOCAL3, LOG_LOCAL4, LOG_LOCAL5,
LOG_LOCAL6, LOG_LOCAL7, LOG_LPR, LOG_MAIL, LOG_NDELAY, LOG_NEWS, LOG_NOTICE, LOG_NOWAIT,
LOG_ODELAY, LOG_PID, LOG_SYSLOG, LOG_USER, LOG_UUCP, LOG_WARNING,
};
#[cfg(not(target_os = "redox"))]
#[pyattr]
use libc::{LOG_AUTHPRIV, LOG_CRON, LOG_PERROR};
fn get_argv(vm: &VirtualMachine) -> Option<PyStrRef> {
if let Some(argv) = vm.state.settings.argv.first() {
if !argv.is_empty() {
return Some(
PyStr::from(match argv.find('\\') {
Some(value) => &argv[value..],
None => argv,
})
.into_ref(vm),
);
}
}
None
}
#[derive(Debug)]
enum GlobalIdent {
Explicit(Box<CStr>),
Implicit,
}
impl GlobalIdent {
fn as_ptr(&self) -> *const c_char {
match self {
GlobalIdent::Explicit(ref cstr) => cstr.as_ptr(),
GlobalIdent::Implicit => std::ptr::null(),
}
}
}
fn global_ident() -> &'static PyRwLock<Option<GlobalIdent>> {
rustpython_common::static_cell! {
static IDENT: PyRwLock<Option<GlobalIdent>>;
};
IDENT.get_or_init(|| PyRwLock::new(None))
}
#[derive(Default, FromArgs)]
struct OpenLogArgs {
#[pyarg(any, optional)]
ident: OptionalOption<PyStrRef>,
#[pyarg(any, optional)]
logoption: OptionalArg<i32>,
#[pyarg(any, optional)]
facility: OptionalArg<i32>,
}
#[pyfunction]
fn openlog(args: OpenLogArgs, vm: &VirtualMachine) -> PyResult<()> {
let logoption = args.logoption.unwrap_or(0);
let facility = args.facility.unwrap_or(LOG_USER);
let ident = match args.ident.flatten() {
Some(args) => Some(args.to_cstring(vm)?),
None => get_argv(vm).map(|argv| argv.to_cstring(vm)).transpose()?,
}
.map(|ident| ident.into_boxed_c_str());
let ident = match ident {
Some(ident) => GlobalIdent::Explicit(ident),
None => GlobalIdent::Implicit,
};
{
let mut locked_ident = global_ident().write();
unsafe { libc::openlog(ident.as_ptr(), logoption, facility) };
*locked_ident = Some(ident);
}
Ok(())
}
#[derive(FromArgs)]
struct SysLogArgs {
#[pyarg(positional)]
priority: PyObjectRef,
#[pyarg(positional, optional)]
message_object: OptionalOption<PyStrRef>,
}
#[pyfunction]
fn syslog(args: SysLogArgs, vm: &VirtualMachine) -> PyResult<()> {
let (priority, msg) = match args.message_object.flatten() {
Some(s) => (args.priority.try_into_value(vm)?, s),
None => (LOG_INFO, args.priority.try_into_value(vm)?),
};
if global_ident().read().is_none() {
openlog(OpenLogArgs::default(), vm)?;
}
let (cformat, cmsg) = ("%s".to_cstring(vm)?, msg.to_cstring(vm)?);
unsafe { libc::syslog(priority, cformat.as_ptr(), cmsg.as_ptr()) };
Ok(())
}
#[pyfunction]
fn closelog() {
if global_ident().read().is_some() {
let mut locked_ident = global_ident().write();
unsafe { libc::closelog() };
*locked_ident = None;
}
}
#[pyfunction]
fn setlogmask(maskpri: i32) -> i32 {
unsafe { libc::setlogmask(maskpri) }
}
#[inline]
#[pyfunction(name = "LOG_MASK")]
fn log_mask(pri: i32) -> i32 {
pri << 1
}
#[inline]
#[pyfunction(name = "LOG_UPTO")]
fn log_upto(pri: i32) -> i32 {
(1 << (pri + 1)) - 1
}
}