vm create-idsig <apk> <idsig>

It delegates to virtualizationservice to create the idsig file for the
APK.

Bug: 218934597
Test: vm create-idsig apk idsig
Change-Id: Id6354c9e624b2f030d59336f5691f9605b310032

vm/src/create_idsig.rs

@@ -0,0 +1,44 @@
+// Copyright 2022, The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Command to create or update an idsig for APK
+
+use android_system_virtualizationservice::aidl::android::system::virtualizationservice::IVirtualizationService::IVirtualizationService;
+use android_system_virtualizationservice::binder::{ParcelFileDescriptor, Strong};
+use anyhow::{Context, Error};
+use std::fs::{File, OpenOptions};
+use std::path::Path;
+
+/// Creates or update the idsig file by digesting the input APK file.
+pub fn command_create_idsig(
+    service: Strong<dyn IVirtualizationService>,
+    apk: &Path,
+    idsig: &Path,
+) -> Result<(), Error> {
+    let apk_file = File::open(apk).with_context(|| format!("Failed to open {:?}", apk))?;
+    let idsig_file = OpenOptions::new()
+        .create(true)
+        .truncate(true)
+        .read(true)
+        .write(true)
+        .open(idsig)
+        .with_context(|| format!("Failed to create/open {:?}", idsig))?;
+    service
+        .createOrUpdateIdsigFile(
+            &ParcelFileDescriptor::new(apk_file),
+            &ParcelFileDescriptor::new(idsig_file),
+        )
+        .with_context(|| format!("Failed to create/update idsig for {:?}", apk))?;
+    Ok(())
+}

vm/src/main.rs

@@ -14,6 +14,7 @@
 
 //! Android VM control tool.
 
+mod create_idsig;
 mod create_partition;
 mod run;
 mod sync;
@@ -24,6 +25,7 @@ use android_system_virtualizationservice::aidl::android::system::virtualizations
 };
 use android_system_virtualizationservice::binder::{wait_for_interface, ProcessState, Strong};
 use anyhow::{Context, Error};
+use create_idsig::command_create_idsig;
 use create_partition::command_create_partition;
 use run::{command_run, command_run_app};
 use rustutils::system_properties;
@@ -142,6 +144,15 @@ enum Opt {
         #[structopt(short="t", long="type", default_value="raw", parse(try_from_str=parse_partition_type))]
         partition_type: PartitionType,
     },
+    /// Creates or update the idsig file by digesting the input APK file.
+    CreateIdsig {
+        /// Path to VM Payload APK
+        #[structopt(parse(from_os_str))]
+        apk: PathBuf,
+        /// Path to idsig of the APK
+        #[structopt(parse(from_os_str))]
+        path: PathBuf,
+    },
 }
 
 fn parse_debug_level(s: &str) -> Result<DebugLevel, String> {
@@ -219,6 +230,7 @@ fn main() -> Result<(), Error> {
         Opt::CreatePartition { path, size, partition_type } => {
             command_create_partition(service, &path, size, partition_type)
         }
+        Opt::CreateIdsig { apk, path } => command_create_idsig(service, &apk, &path),
     }
 }