rust: stub out logging from rust

rust/src/lib.rs

@@ -1,3 +1,2 @@
-#[test]
+#[macro_use]
-fn it_works() {
+pub mod log;
-}

rust/src/log.rs

@@ -0,0 +1,139 @@
+/* Copyright (C) 2017 Open Information Security Foundation
+ *
+ * You can copy, redistribute or modify this Program under the terms of
+ * the GNU General Public License version 2 as published by the Free
+ * Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+extern crate libc;
+
+use std::os::raw::c_char;
+use std::ffi::{CString};
+use std::path::Path;
+
+pub enum Level {
+    NotSet = -1,
+    None = 0,
+    Emergency,
+    Alert,
+    Critical,
+    Error,
+    Warning,
+    Notice,
+    Info,
+    Perf,
+    Config,
+    Debug,
+}
+
+pub static mut LEVEL: i32 = Level::NotSet as i32;
+
+extern {
+    fn SCLogMessage(level: libc::c_int,
+                    filename: *const c_char,
+                    line: libc::c_uint,
+                    function: *const c_char,
+                    code: libc::c_int,
+                    message: *const c_char) -> libc::c_int;
+}
+
+pub fn get_log_level() -> i32 {
+    unsafe {
+        LEVEL
+    }
+}
+
+fn basename(filename: &str) -> &str {
+    let path = Path::new(filename);
+    for os_str in path.file_name() {
+        for basename in os_str.to_str() {
+            return basename;
+        }
+    }
+    return filename;
+}
+
+pub fn sclog(level: Level, file: &str, line: u32, function: &str,
+         code: i32, message: &str)
+{
+    let filename = basename(file);
+
+    unsafe {
+        SCLogMessage(level as i32,
+                     CString::new(filename).unwrap().as_ptr(),
+                     line,
+                     CString::new(function).unwrap().as_ptr(),
+                     code,
+                     CString::new(message).unwrap().as_ptr());
+    }
+}
+
+/// Return the function name, but for now just return <rust> as Rust
+/// has no macro to return the function name, but may in the future,
+/// see: https://github.com/rust-lang/rfcs/pull/1719
+macro_rules!function {
+    () => {{ "<rust>" }}
+}
+
+#[macro_export]
+macro_rules!do_log {
+    ($level:expr, $file:expr, $line:expr, $function:expr, $code:expr,
+     $($arg:tt)*) => {
+        if get_log_level() >= $level as i32 {
+            sclog($level, $file, $line, $function, $code,
+                  &(format!($($arg)*)));
+        }
+    }
+}
+
+#[macro_export]
+macro_rules!SCLogNotice {
+    ($($arg:tt)*) => {
+        do_log!(Level::Notice, file!(), line!(), function!(), 0, $($arg)*);
+    }
+}
+
+#[macro_export]
+macro_rules!SCLogInfo {
+    ($($arg:tt)*) => {
+        do_log!(Level::Info, file!(), line!(), function!(), 0, $($arg)*);
+    }
+}
+
+#[macro_export]
+macro_rules!SCLogPerf {
+    ($($arg:tt)*) => {
+        do_log!(Level::Perf, file!(), line!(), function!(), 0, $($arg)*);
+    }
+}
+
+#[macro_export]
+macro_rules!SCLogConfig {
+    ($($arg:tt)*) => {
+        do_log!(Level::Config, file!(), line!(), function!(), 0, $($arg)*);
+    }
+}
+
+#[macro_export]
+macro_rules!SCLogDebug {
+    ($($arg:tt)*) => {
+        do_log!(Level::Debug, file!(), line!(), function!(), 0, $($arg)*);
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn rs_log_init(level: i32) {
+    unsafe {
+        LEVEL = level;
+    }
+}

src/Makefile.am

@@ -322,6 +322,7 @@ runmode-unittests.c runmode-unittests.h \
 runmode-unix-socket.c runmode-unix-socket.h \
 runmode-tile.c runmode-tile.h \
 runmodes.c runmodes.h \
+rust.h \
 source-af-packet.c source-af-packet.h \
 source-erf-dag.c source-erf-dag.h \
 source-erf-file.c source-erf-file.h \

src/rust.h

@@ -0,0 +1,18 @@
+/* Copyright (C) 2017 Open Information Security Foundation
+ *
+ * You can copy, redistribute or modify this Program under the terms of
+ * the GNU General Public License version 2 as published by the Free
+ * Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+void rs_log_init(int32_t level);

src/util-debug.c

@@ -43,6 +43,10 @@
 #include "util-unittest.h"
 #include "util-syslog.h"
 
+#ifdef HAVE_RUST
+#include "rust.h"
+#endif
+
 #include "conf.h"
 
 /* holds the string-enum mapping for the enums held in the table SCLogLevel */
@@ -1256,6 +1260,10 @@ void SCLogInitLogModule(SCLogInitData *sc_lid)
 
     //SCOutputPrint(sc_did->startup_message);
 
+#ifdef HAVE_RUST
+    rs_log_init(sc_log_global_log_level);
+#endif
+
     return;
 }