feat: error when using insecure identity on mainnet

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 # UNRELEASED
 
+### feat: error when using insecure identity on mainnet
+
+This used to be a warning. A hard error can abort the command so that no insecure state will be on the mainnet.
+
+Users can surpress this error by setting `export DFX_WARNING=-mainnet_plaintext_identity`.
+
+The warning won't display when executing commands like `dfx deploy --playground`.
+
 # 0.24.3
 
 ### feat: Bitcoin support in PocketIC

e2e/tests-dfx/canister_url.bash

@@ -4,7 +4,9 @@ load ../utils/_
 
 setup() {
   standard_setup
-
+  # some of the tests run on mainnet with default plaintext identity
+  # so we need to set this to avoid the error
+  export DFX_WARNING=-mainnet_plaintext_identity
   dfx_new_assets hello
 }
 
@@ -58,7 +60,7 @@ teardown() {
   echo "{}" > canister_ids.json
   jq '.hello_frontend.ic = "qsgof-4qaaa-aaaan-qekqq-cai"' canister_ids.json | sponge canister_ids.json
   frontend_id=$(dfx canister id hello_frontend --ic)
-  
+
   assert_command dfx canister url hello_frontend --ic
   assert_match "https://${frontend_id}.icp0.io"
 

e2e/tests-dfx/fabricate_cycles.bash

@@ -39,6 +39,8 @@ teardown() {
 
 @test "ledger fabricate-cycles fails on real IC" {
   install_asset greet
+  # without DFX_WARNING, the command would fail with different error (Failed to create AgentEnvironment...)
+  export DFX_WARNING=-mainnet_plaintext_identity
   assert_command_fail dfx ledger fabricate-cycles --all --network ic
   assert_match "Cannot run this on the real IC."
   assert_command_fail dfx ledger fabricate-cycles --all --ic

e2e/tests-dfx/identity.bash

@@ -186,15 +186,15 @@ teardown() {
   assert_eq '(blob "hello")' "$stdout"
 }
 
-@test "using an unencrypted identity on mainnet provokes a warning" {
-  assert_command dfx ledger balance --network ic
-  assert_match "WARN: The default identity is not stored securely." "$stderr"
+@test "using an unencrypted identity on mainnet provokes a hard error which can be surpressed" {
+  assert_command_fail dfx ledger balance --network ic
+  assert_match "The default identity is not stored securely." "$stderr"
   assert_command "${BATS_TEST_DIRNAME}/../assets/expect_scripts/init_alice_with_pw.exp"
   assert_command "${BATS_TEST_DIRNAME}/../assets/expect_scripts/get_ledger_balance.exp"
   dfx identity new bob --storage-mode plaintext
-  assert_command dfx ledger balance --network ic --identity bob
-  assert_match "WARN: The bob identity is not stored securely." "$stderr"
-
+  assert_command_fail dfx ledger balance --network ic --identity bob
+  assert_match "The bob identity is not stored securely." "$stderr"
+  # can surpress the error
   export DFX_WARNING=-mainnet_plaintext_identity
   assert_command dfx ledger balance --network ic --identity bob
   assert_not_contains "not stored securely" "$stderr"

e2e/tests-dfx/network.bash

@@ -99,13 +99,13 @@ teardown() {
 
   assert_command_fail dfx diagnose --network ic
   assert_contains "The test_id identity is not stored securely."
-  assert_contains "use it in mainnet-facing commands"
-  assert_contains "No wallet found; nothing to do"
+  assert_contains "in mainnet-facing commands"
+  assert_contains "you can suppress this warning"
 
   assert_command_fail dfx diagnose --ic
   assert_contains "The test_id identity is not stored securely."
-  assert_contains "use it in mainnet-facing commands"
-  assert_contains "No wallet found; nothing to do"
+  assert_contains "in mainnet-facing commands"
+  assert_contains "you can suppress this warning"
 
   assert_command dfx diagnose
   assert_not_contains "identity is not stored securely"

e2e/tests-dfx/sign_send.bash

@@ -44,7 +44,8 @@ teardown() {
   cd "$E2E_TEMP_DIR"
   mkdir not-a-project-dir
   cd not-a-project-dir
-
+  # surpress the error
+  export DFX_WARNING=-mainnet_plaintext_identity
   assert_command dfx canister sign --query rwlgt-iiaaa-aaaaa-aaaaa-cai read --network ic
   assert_match "Query message generated at \[message.json\]"
 }

src/dfx/src/lib/environment.rs

@@ -3,12 +3,12 @@ use crate::config::dfx_version;
 use crate::lib::error::DfxResult;
 use crate::lib::progress_bar::ProgressBar;
 use crate::lib::warning::{is_warning_disabled, DfxWarning::MainnetPlainTextIdentity};
-use anyhow::anyhow;
+use anyhow::{anyhow, bail};
 use candid::Principal;
 use dfx_core::config::cache::Cache;
 use dfx_core::config::model::canister_id_store::CanisterIdStore;
 use dfx_core::config::model::dfinity::{Config, NetworksConfig};
-use dfx_core::config::model::network_descriptor::NetworkDescriptor;
+use dfx_core::config::model::network_descriptor::{NetworkDescriptor, NetworkTypeDescriptor};
 use dfx_core::error::canister_id_store::CanisterIdStoreError;
 use dfx_core::error::identity::NewIdentityManagerError;
 use dfx_core::error::load_dfx_config::LoadDfxConfigError;
@@ -17,7 +17,7 @@ use dfx_core::identity::identity_manager::{IdentityManager, InitializeIdentity};
 use fn_error_context::context;
 use ic_agent::{Agent, Identity};
 use semver::Version;
-use slog::{warn, Logger, Record};
+use slog::{Logger, Record};
 use std::borrow::Cow;
 use std::cell::RefCell;
 use std::path::PathBuf;
@@ -288,11 +288,23 @@ impl<'a> AgentEnvironment<'a> {
             identity_manager.instantiate_selected_identity(&logger)?
         };
         if network_descriptor.is_ic
+            && !matches!(
+                network_descriptor.r#type,
+                NetworkTypeDescriptor::Playground { .. }
+            )
             && identity.insecure
             && !is_warning_disabled(MainnetPlainTextIdentity)
         {
-            warn!(logger, "The {} identity is not stored securely. Do not use it to control a lot of cycles/ICP. Create a new identity with `dfx identity new` \
-                and use it in mainnet-facing commands with the `--identity` flag", identity.name());
+            bail!(
+                "The {} identity is not stored securely. Do not use it to control a lot of cycles/ICP.
+- For enhanced security, create a new identity using the command: 
+    dfx identity new
+  Then, specify the new identity in mainnet-facing commands with the `--identity` flag.
+- If you understand the risks and still wish to use the insecure plaintext identity, you can suppress this warning by running:
+    export DFX_WARNING=-mainnet_plaintext_identity
+  After setting this environment variable, re-run the command.",
+                identity.name()
+            );
         }
         let url = network_descriptor.first_provider()?;
         let effective_canister_id = if let Some(d) = &network_descriptor.local_server_descriptor {