add get_addresses export

examples/ipfs_node/src/main.rs

@@ -45,12 +45,22 @@ fn main() {
 
     println!("ipfs node interface is\n{}", ipfs_node.get_interface());
 
+    let node_addresses = ipfs_node
+        .core_call(
+            "ipfs_node.wasm",
+            "get_addresses",
+            &[],
+        )
+        .unwrap();
+
+    println!("ipfs node addresses are:\n{:?}", node_addresses);
+
     let result = ipfs_node
         .rpc_call(
             &ipfs_rpc,
-            "put",
+            "get",
             &[IValue::String(
-                "QmdHsYnAvbrvXg3iwr6bLaqooVT31E8CMpZRWc9wX2Fbt8".to_string(),
+                "Qmf412jQZiuVUtdgnB36FXFX7xg5V6KEbSJ4dpQuhkLyfD".to_string(),
             )],
         )
         .unwrap();

examples/ipfs_node/wasm/ipfs_node/src/main.rs

@@ -47,7 +47,7 @@ pub unsafe fn put(file_path_ptr: *mut u8, file_path_size: usize) {
         "host ipfs call failed".to_string()
     };
 
-    let msg = format!("ipfs_node.put: file add wtih hash is {} \n", hash);
+    let msg = format!("ipfs_node.put: file add with hash is {} \n", hash);
     log_utf8_string(msg.as_ptr() as _, msg.len() as _);
 
     *RESULT_PTR.get_mut() = hash.as_ptr() as _;
@@ -82,6 +82,32 @@ pub unsafe fn get(hash_ptr: *mut u8, hash_size: usize) {
     std::mem::forget(file_path);
 }
 
+#[no_mangle]
+pub unsafe fn get_addresses() {
+    let msg = "ipfs_node.get_addresses".to_string();
+    log_utf8_string(msg.as_ptr() as _, msg.len() as _);
+
+    let cmd = "id -f'<addrs>'";
+    let result = ipfs(cmd.as_ptr() as _, cmd.len() as _);
+
+    let multiaddrs = if result == 0 {
+        String::from_raw_parts(
+            *RESULT_PTR.get_mut() as _,
+            *RESULT_SIZE.get_mut(),
+            *RESULT_SIZE.get_mut(),
+        )
+    } else {
+        "host ipfs call failed".to_string()
+    };
+
+    let msg = format!("ipfs_node.get_addresses: node addresses are {} \n", multiaddrs);
+    log_utf8_string(msg.as_ptr() as _, msg.len() as _);
+
+    *RESULT_PTR.get_mut() = multiaddrs.as_ptr() as _;
+    *RESULT_SIZE.get_mut() = multiaddrs.len();
+    std::mem::forget(multiaddrs);
+}
+
 #[link(wasm_import_module = "host")]
 extern "C" {
     /// Writes a byte string of size bytes that starts from ptr to a logger.

examples/ipfs_node/wasm/ipfs_node/wit

@@ -25,6 +25,12 @@
 ;; import ipfs put/get function
 (@interface type (func (param string) (result string))) ;; 8
 
+;; export ipfs.get_addresses function
+(@interface type (func (result string)))                ;; 9
+
+;; export ipfs.get_addresses function
+(@interface type (func ))                               ;; 10
+
 (@interface export "allocate" (func  0))        ;; 0
 (@interface export "deallocate" (func 1))       ;; 1
 (@interface export "get_result_size" (func 3))  ;; 2
@@ -34,6 +40,7 @@
 
 (@interface export "put" (func 5))              ;; 6
 (@interface export "get" (func 6))              ;; 7
+(@interface export "get_addresses" (func 10))   ;; 8
 
 ;; adapter for export function put
 (@interface func (type 7)
@@ -67,6 +74,18 @@
     call-core 1         ;; call deallocate
 )
 
+;; adapter for export function get_addresses
+(@interface func (type 9)
+    call-core 8         ;; call self.get
+    call-core 3         ;; call get_result_ptr
+    call-core 2         ;; call get_result_size
+    string.lift_memory
+    call-core 3         ;; call get_result_ptr
+    call-core 2         ;; call get_result_size
+    call-core 1         ;; call deallocate
+)
+
 ;; Implementations
 (@interface implement (func 5) (func 7))
 (@interface implement (func 6) (func 8))
+(@interface implement (func 10) (func 9))

examples/simple_greeting/wit

@@ -20,6 +20,7 @@
 (@interface export "get_result_size" (func 4))
 (@interface export "get_result_ptr" (func 4))
 
+;; greeting export adapter
 (@interface func (type 2)
     arg.get 0
     string.size
@@ -35,6 +36,7 @@
     call-core 1 ;; call deallocate
 )
 
+;; strlen export adapter
 (@interface func (type 3)
     arg.get 0
     string.size

fce/src/vm/config.rs

@@ -15,9 +15,9 @@
  */
 
 use wasmer_wasi::WasiVersion;
+use wasmer_runtime::ImportObject;
 
 use std::path::PathBuf;
-use wasmer_runtime::ImportObject;
 
 #[derive(Clone)]
 pub struct FCEModuleConfig {