adder added to test

llmp_test/src/main.rs

@@ -8,13 +8,13 @@ use std::time;
 use afl::events::llmp_translated::*;
 
 const TAG_SIMPLE_U32_V1: u32 = 0x51300321;
+const TAG_MATH_RESULT_V1: u32 = 0x77474331;
 
-fn llmp_test_clientloop(client: *mut llmp_client, _data: *mut c_void) -> ! {
+unsafe fn llmp_test_clientloop(client: *mut llmp_client, _data: *mut c_void) -> ! {
     let mut counter: u32 = 0;
     loop {
         counter += 1;
 
-        unsafe {
         let llmp_message = llmp_client_alloc_next(client, size_of::<u32>());
         std::ptr::copy(
             counter.to_be_bytes().as_ptr(),
@@ -23,29 +23,71 @@ fn llmp_test_clientloop(client: *mut llmp_client, _data: *mut c_void) -> ! {
         );
         (*llmp_message).tag = TAG_SIMPLE_U32_V1;
         llmp_client_send(client, llmp_message);
+
+        thread::sleep(time::Duration::from_millis(100));
+    }
+}
+
+unsafe fn u32_from_msg(message: *const llmp_message) -> u32 {
+    u32::from_be_bytes(
+        std::slice::from_raw_parts((*message).buf.as_ptr(), size_of::<u32>())
+            .try_into()
+            .unwrap(),
+    )
+}
+
+unsafe fn test_adder_clientloop(client: *mut llmp_client, _data: *mut c_void) -> ! {
+    let mut last_result: u32 = 0;
+    let mut current_result: u32 = 0;
+    loop {
+        loop {
+            let last_msg = llmp_client_recv(client);
+            if last_msg == 0 as *mut llmp_message {
+                break;
+            }
+            match (*last_msg).tag {
+                TAG_SIMPLE_U32_V1 => {
+                    current_result = last_result.wrapping_add(u32_from_msg(last_msg));
+                }
+                _ => println!("Adder Client ignored unknown message {}", (*last_msg).tag),
+            };
+        }
+
+        if current_result != last_result {
+            let llmp_message = llmp_client_alloc_next(client, size_of::<u32>());
+            std::ptr::copy(
+                current_result.to_be_bytes().as_ptr(),
+                (*llmp_message).buf.as_mut_ptr(),
+                size_of::<u32>(),
+            );
+            (*llmp_message).tag = TAG_MATH_RESULT_V1;
+            llmp_client_send(client, llmp_message);
+            last_result = current_result;
         }
 
         thread::sleep(time::Duration::from_millis(100));
     }
 }
 
-fn broker_message_hook(
+unsafe fn broker_message_hook(
     _broker: *mut llmp_broker_state,
     client_metadata: *mut llmp_broker_client_metadata,
     message: *mut llmp_message,
     _data: *mut c_void,
 ) -> LlmpMessageHookResult {
-    unsafe {
     match (*message).tag {
         TAG_SIMPLE_U32_V1 => {
             println!(
                 "Client {:?} sent message: {:?}",
                 (*client_metadata).pid,
-                    u32::from_be_bytes(
-                        std::slice::from_raw_parts((*message).buf.as_ptr(), size_of::<u32>())
-                            .try_into()
-                            .unwrap()
-                    ),
+                u32_from_msg(message)
+            );
+            LlmpMessageHookResult::ForwardToClients
+        }
+        TAG_MATH_RESULT_V1 => {
+            println!(
+                "Adder Client has this current result: {:?}",
+                u32_from_msg(message)
             );
             LlmpMessageHookResult::Handled
         }
@@ -54,14 +96,17 @@ fn broker_message_hook(
             LlmpMessageHookResult::ForwardToClients
         }
     }
-    }
 }
 
 fn main() {
     /* The main node has a broker, and a few worker threads */
+    let threads_total = num_cpus::get();
 
-    let thread_count = num_cpus::get() - 1;
-    println!("Running with 1 broker and {} clients", thread_count);
+    let counter_thread_count = threads_total - 2;
+    println!(
+        "Running with 1 broker, 1 adder, and {} counter clients",
+        counter_thread_count
+    );
 
     let mut broker = llmp_broker_state {
         last_msg_sent: ptr::null_mut(),
@@ -74,7 +119,7 @@ fn main() {
     };
     unsafe {
         llmp_broker_init(&mut broker).expect("Could not init");
-        for i in 0..thread_count {
+        for i in 0..counter_thread_count {
             println!("Adding client {}", i);
             llmp_broker_register_childprocess_clientloop(
                 &mut broker,
@@ -84,6 +129,13 @@ fn main() {
             .expect("could not add child clientloop");
         }
 
+        llmp_broker_register_childprocess_clientloop(
+            &mut broker,
+            test_adder_clientloop,
+            ptr::null_mut(),
+        )
+        .expect("Error registering childprocess");
+
         println!("Spawning broker");
 
         llmp_broker_add_message_hook(&mut broker, broker_message_hook, ptr::null_mut());

src/events/llmp_translated.rs

@@ -147,7 +147,7 @@ pub struct llmp_broker_client_metadata {
     pub data: *mut c_void,
 }
 
-pub type LlmpClientloopFn = fn(_: *mut llmp_client, _: *mut c_void) -> !;
+pub type LlmpClientloopFn = unsafe fn(_: *mut llmp_client, _: *mut c_void) -> !;
 pub type LlmpClientType = c_uint;
 pub const LLMP_CLIENT_TYPE_FOREIGN_PROCESS: LlmpClientType = 3;
 pub const LLMP_CLIENT_TYPE_CHILD_PROCESS: LlmpClientType = 2;
@@ -170,7 +170,7 @@ pub enum LlmpMessageHookResult {
     ForwardToClients,
 }
 
-pub type LlmpMessageHookFn = fn(
+pub type LlmpMessageHookFn = unsafe fn(
     _: *mut llmp_broker_state,
     _: *mut llmp_broker_client_metadata,
     _: *mut llmp_message,
@@ -1075,7 +1075,7 @@ pub unsafe fn llmp_client_recv(mut client: *mut llmp_client) -> *mut llmp_messag
         if (*msg).tag == 0xdeadaf as c_uint {
             panic!("BUG: Read unallocated msg");
         } else {
-            if (*msg).tag == 0xaf1e0f1 as c_int as c_uint {
+            if (*msg).tag == 0xaf1e0f1 as c_uint {
                 /* we reached the end of the current page.
                 We'll init a new page but can reuse the mem are of the current map.
                 However, we cannot use the message if we deinit its page, so let's copy */

src/events/shmem_translated.rs

@@ -1,4 +1,3 @@
-use ::libc;
 use libc::{c_char, c_int, c_long, c_uchar, c_uint, c_ulong, c_ushort, c_void};
 use std::ffi::CStr;