Sync from main branch

- wasi_sock_recv doesn't use src_addr
- check src_addr before coverting

Author: lum1n0us

core/iwasm/libraries/libc-wasi/libc_wasi_wrapper.c

@@ -2147,7 +2147,6 @@ wasi_sock_recv(wasm_exec_env_t exec_env, wasi_fd_t sock, iovec_app_t *ri_data,
                wasi_roflags_t *ro_flags)
 {
     wasm_module_inst_t module_inst = get_module_inst(exec_env);
-    __wasi_addr_t src_addr;
     wasi_errno_t error;
 
     if (!validate_native_addr(ro_data_len, sizeof(*ro_data_len)))
@@ -2156,10 +2155,11 @@ wasi_sock_recv(wasm_exec_env_t exec_env, wasi_fd_t sock, iovec_app_t *ri_data,
     if (!validate_native_addr(ro_flags, (uint64)sizeof(wasi_roflags_t)))
         return __WASI_EINVAL;
 
+    // We call `recvfrom` with NULL source address as `recv` doesn't
+    // return the source address and this parameter is not used.
+    *ro_data_len = 0;
     error = wasi_sock_recv_from(exec_env, sock, ri_data, ri_data_len, ri_flags,
-                                &src_addr, ro_data_len);
-    *ro_flags = ri_flags;
-
+                                NULL, ro_data_len);
     return error;
 }
 

core/iwasm/libraries/libc-wasi/sandboxed-system-primitives/src/posix.c

@@ -2854,7 +2854,11 @@ wasmtime_ssp_sock_recv_from(wasm_exec_env_t exec_env, struct fd_table *curfds,
         return convert_errno(errno);
     }
 
-    bh_sockaddr_to_wasi_addr(&sockaddr, src_addr);
+    // If the source address is not NULL, we need to convert the sockaddr
+    // back to __wasi_addr_t format.
+    if (src_addr != NULL) {
+        bh_sockaddr_to_wasi_addr(&sockaddr, src_addr);
+    }
 
     *recv_len = (size_t)ret;
     return __WASI_ESUCCESS;