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node_options.cc
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node_options.cc
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#include "node_options.h" // NOLINT(build/include_inline)
#include "node_options-inl.h"
#include "env-inl.h"
#include "node_binding.h"
#include "node_internals.h"
#include <errno.h>
#include <sstream>
#include <limits>
#include <algorithm>
#include <cstdlib> // strtoul, errno
using v8::Boolean;
using v8::Context;
using v8::FunctionCallbackInfo;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::Map;
using v8::Number;
using v8::Object;
using v8::Undefined;
using v8::Value;
namespace node {
namespace per_process {
Mutex cli_options_mutex;
std::shared_ptr<PerProcessOptions> cli_options{new PerProcessOptions()};
} // namespace per_process
void DebugOptions::CheckOptions(std::vector<std::string>* errors) {
#if !NODE_USE_V8_PLATFORM && !HAVE_INSPECTOR
if (inspector_enabled) {
errors->push_back("Inspector is not available when Node is compiled "
"--without-v8-platform and --without-inspector.");
}
#endif
if (deprecated_debug) {
errors->push_back("[DEP0062]: `node --debug` and `node --debug-brk` "
"are invalid. Please use `node --inspect` and "
"`node --inspect-brk` instead.");
}
std::vector<std::string> destinations =
SplitString(inspect_publish_uid_string, ',');
inspect_publish_uid.console = false;
inspect_publish_uid.http = false;
for (const std::string& destination : destinations) {
if (destination == "stderr") {
inspect_publish_uid.console = true;
} else if (destination == "http") {
inspect_publish_uid.http = true;
} else {
errors->push_back("--inspect-publish-uid destination can be "
"stderr or http");
}
}
}
void PerProcessOptions::CheckOptions(std::vector<std::string>* errors) {
#if HAVE_OPENSSL
if (use_openssl_ca && use_bundled_ca) {
errors->push_back("either --use-openssl-ca or --use-bundled-ca can be "
"used, not both");
}
// Any value less than 2 disables use of the secure heap.
if (secure_heap >= 2) {
if ((secure_heap & (secure_heap - 1)) != 0)
errors->push_back("--secure-heap must be a power of 2");
secure_heap_min =
std::min({
secure_heap,
secure_heap_min,
static_cast<int64_t>(std::numeric_limits<int>::max())});
secure_heap_min = std::max(static_cast<int64_t>(2), secure_heap_min);
if ((secure_heap_min & (secure_heap_min - 1)) != 0)
errors->push_back("--secure-heap-min must be a power of 2");
}
#endif
if (use_largepages != "off" &&
use_largepages != "on" &&
use_largepages != "silent") {
errors->push_back("invalid value for --use-largepages");
}
per_isolate->CheckOptions(errors);
}
void PerIsolateOptions::CheckOptions(std::vector<std::string>* errors) {
per_env->CheckOptions(errors);
}
void EnvironmentOptions::CheckOptions(std::vector<std::string>* errors) {
if (has_policy_integrity_string && experimental_policy.empty()) {
errors->push_back("--policy-integrity requires "
"--experimental-policy be enabled");
}
if (has_policy_integrity_string && experimental_policy_integrity.empty()) {
errors->push_back("--policy-integrity cannot be empty");
}
if (!module_type.empty()) {
if (module_type != "commonjs" && module_type != "module") {
errors->push_back("--input-type must be \"module\" or \"commonjs\"");
}
}
if (!experimental_specifier_resolution.empty()) {
if (experimental_specifier_resolution != "node" &&
experimental_specifier_resolution != "explicit") {
errors->push_back(
"invalid value for --experimental-specifier-resolution");
}
}
if (syntax_check_only && has_eval_string) {
errors->push_back("either --check or --eval can be used, not both");
}
if (!unhandled_rejections.empty() &&
unhandled_rejections != "warn-with-error-code" &&
unhandled_rejections != "throw" &&
unhandled_rejections != "strict" &&
unhandled_rejections != "warn" &&
unhandled_rejections != "none") {
errors->push_back("invalid value for --unhandled-rejections");
}
if (tls_min_v1_3 && tls_max_v1_2) {
errors->push_back("either --tls-min-v1.3 or --tls-max-v1.2 can be "
"used, not both");
}
if (heap_snapshot_near_heap_limit < 0) {
errors->push_back("--heap-snapshot-near-heap-limit must not be negative");
}
#if HAVE_INSPECTOR
if (!cpu_prof) {
if (!cpu_prof_name.empty()) {
errors->push_back("--cpu-prof-name must be used with --cpu-prof");
}
if (!cpu_prof_dir.empty()) {
errors->push_back("--cpu-prof-dir must be used with --cpu-prof");
}
// We can't catch the case where the value passed is the default value,
// then the option just becomes a noop which is fine.
if (cpu_prof_interval != kDefaultCpuProfInterval) {
errors->push_back("--cpu-prof-interval must be used with --cpu-prof");
}
}
if (cpu_prof && cpu_prof_dir.empty() && !diagnostic_dir.empty()) {
cpu_prof_dir = diagnostic_dir;
}
if (!heap_prof) {
if (!heap_prof_name.empty()) {
errors->push_back("--heap-prof-name must be used with --heap-prof");
}
if (!heap_prof_dir.empty()) {
errors->push_back("--heap-prof-dir must be used with --heap-prof");
}
// We can't catch the case where the value passed is the default value,
// then the option just becomes a noop which is fine.
if (heap_prof_interval != kDefaultHeapProfInterval) {
errors->push_back("--heap-prof-interval must be used with --heap-prof");
}
}
if (heap_prof && heap_prof_dir.empty() && !diagnostic_dir.empty()) {
heap_prof_dir = diagnostic_dir;
}
debug_options_.CheckOptions(errors);
#endif // HAVE_INSPECTOR
}
namespace options_parser {
class DebugOptionsParser : public OptionsParser<DebugOptions> {
public:
DebugOptionsParser();
};
class EnvironmentOptionsParser : public OptionsParser<EnvironmentOptions> {
public:
EnvironmentOptionsParser();
explicit EnvironmentOptionsParser(const DebugOptionsParser& dop)
: EnvironmentOptionsParser() {
Insert(dop, &EnvironmentOptions::get_debug_options);
}
};
class PerIsolateOptionsParser : public OptionsParser<PerIsolateOptions> {
public:
PerIsolateOptionsParser() = delete;
explicit PerIsolateOptionsParser(const EnvironmentOptionsParser& eop);
};
class PerProcessOptionsParser : public OptionsParser<PerProcessOptions> {
public:
PerProcessOptionsParser() = delete;
explicit PerProcessOptionsParser(const PerIsolateOptionsParser& iop);
};
#if HAVE_INSPECTOR
const DebugOptionsParser _dop_instance{};
const EnvironmentOptionsParser _eop_instance{_dop_instance};
// This Parse is not dead code. It is used by embedders (e.g., Electron).
template <>
void Parse(
StringVector* const args, StringVector* const exec_args,
StringVector* const v8_args,
DebugOptions* const options,
OptionEnvvarSettings required_env_settings, StringVector* const errors) {
_dop_instance.Parse(
args, exec_args, v8_args, options, required_env_settings, errors);
}
#else
const EnvironmentOptionsParser _eop_instance{};
#endif // HAVE_INSPECTOR
const PerIsolateOptionsParser _piop_instance{_eop_instance};
const PerProcessOptionsParser _ppop_instance{_piop_instance};
template <>
void Parse(
StringVector* const args, StringVector* const exec_args,
StringVector* const v8_args,
PerIsolateOptions* const options,
OptionEnvvarSettings required_env_settings, StringVector* const errors) {
_piop_instance.Parse(
args, exec_args, v8_args, options, required_env_settings, errors);
}
template <>
void Parse(
StringVector* const args, StringVector* const exec_args,
StringVector* const v8_args,
PerProcessOptions* const options,
OptionEnvvarSettings required_env_settings, StringVector* const errors) {
_ppop_instance.Parse(
args, exec_args, v8_args, options, required_env_settings, errors);
}
// XXX: If you add an option here, please also add it to doc/node.1 and
// doc/api/cli.md
// TODO(addaleax): Make that unnecessary.
DebugOptionsParser::DebugOptionsParser() {
AddOption("--inspect-port",
"set host:port for inspector",
&DebugOptions::host_port,
kAllowedInEnvironment);
AddAlias("--debug-port", "--inspect-port");
AddOption("--inspect",
"activate inspector on host:port (default: 127.0.0.1:9229)",
&DebugOptions::inspector_enabled,
kAllowedInEnvironment);
AddAlias("--inspect=", { "--inspect-port", "--inspect" });
AddOption("--debug", "", &DebugOptions::deprecated_debug);
AddAlias("--debug=", "--debug");
AddOption("--debug-brk", "", &DebugOptions::deprecated_debug);
AddAlias("--debug-brk=", "--debug-brk");
AddOption("--inspect-brk",
"activate inspector on host:port and break at start of user script",
&DebugOptions::break_first_line,
kAllowedInEnvironment);
Implies("--inspect-brk", "--inspect");
AddAlias("--inspect-brk=", { "--inspect-port", "--inspect-brk" });
AddOption("--inspect-brk-node", "", &DebugOptions::break_node_first_line);
Implies("--inspect-brk-node", "--inspect");
AddAlias("--inspect-brk-node=", { "--inspect-port", "--inspect-brk-node" });
AddOption("--inspect-publish-uid",
"comma separated list of destinations for inspector uid"
"(default: stderr,http)",
&DebugOptions::inspect_publish_uid_string,
kAllowedInEnvironment);
}
EnvironmentOptionsParser::EnvironmentOptionsParser() {
AddOption("--conditions",
"additional user conditions for conditional exports and imports",
&EnvironmentOptions::conditions,
kAllowedInEnvironment);
AddAlias("-C", "--conditions");
AddOption("--diagnostic-dir",
"set dir for all output files"
" (default: current working directory)",
&EnvironmentOptions::diagnostic_dir,
kAllowedInEnvironment);
AddOption("--enable-source-maps",
"Source Map V3 support for stack traces",
&EnvironmentOptions::enable_source_maps,
kAllowedInEnvironment);
AddOption("--experimental-abortcontroller", "",
NoOp{}, kAllowedInEnvironment);
AddOption("--experimental-json-modules",
"experimental JSON interop support for the ES Module loader",
&EnvironmentOptions::experimental_json_modules,
kAllowedInEnvironment);
AddOption("--experimental-loader",
"use the specified module as a custom loader",
&EnvironmentOptions::userland_loader,
kAllowedInEnvironment);
AddAlias("--loader", "--experimental-loader");
AddOption("--experimental-modules",
"",
&EnvironmentOptions::experimental_modules,
kAllowedInEnvironment);
AddOption("--experimental-wasm-modules",
"experimental ES Module support for webassembly modules",
&EnvironmentOptions::experimental_wasm_modules,
kAllowedInEnvironment);
AddOption("--experimental-import-meta-resolve",
"experimental ES Module import.meta.resolve() support",
&EnvironmentOptions::experimental_import_meta_resolve,
kAllowedInEnvironment);
AddOption("--experimental-policy",
"use the specified file as a "
"security policy",
&EnvironmentOptions::experimental_policy,
kAllowedInEnvironment);
AddOption("[has_policy_integrity_string]",
"",
&EnvironmentOptions::has_policy_integrity_string);
AddOption("--policy-integrity",
"ensure the security policy contents match "
"the specified integrity",
&EnvironmentOptions::experimental_policy_integrity,
kAllowedInEnvironment);
Implies("--policy-integrity", "[has_policy_integrity_string]");
AddOption("--experimental-repl-await",
"experimental await keyword support in REPL",
&EnvironmentOptions::experimental_repl_await,
kAllowedInEnvironment);
AddOption("--experimental-vm-modules",
"experimental ES Module support in vm module",
&EnvironmentOptions::experimental_vm_modules,
kAllowedInEnvironment);
AddOption("--experimental-worker", "", NoOp{}, kAllowedInEnvironment);
AddOption("--experimental-report", "", NoOp{}, kAllowedInEnvironment);
AddOption("--experimental-wasi-unstable-preview1",
"experimental WASI support",
&EnvironmentOptions::experimental_wasi,
kAllowedInEnvironment);
AddOption("--expose-internals", "", &EnvironmentOptions::expose_internals);
AddOption("--frozen-intrinsics",
"experimental frozen intrinsics support",
&EnvironmentOptions::frozen_intrinsics,
kAllowedInEnvironment);
AddOption("--heapsnapshot-signal",
"Generate heap snapshot on specified signal",
&EnvironmentOptions::heap_snapshot_signal,
kAllowedInEnvironment);
AddOption("--heapsnapshot-near-heap-limit",
"Generate heap snapshots whenever V8 is approaching "
"the heap limit. No more than the specified number of "
"heap snapshots will be generated.",
&EnvironmentOptions::heap_snapshot_near_heap_limit,
kAllowedInEnvironment);
AddOption("--http-parser", "", NoOp{}, kAllowedInEnvironment);
AddOption("--insecure-http-parser",
"use an insecure HTTP parser that accepts invalid HTTP headers",
&EnvironmentOptions::insecure_http_parser,
kAllowedInEnvironment);
AddOption("--input-type",
"set module type for string input",
&EnvironmentOptions::module_type,
kAllowedInEnvironment);
AddOption("--experimental-specifier-resolution",
"Select extension resolution algorithm for es modules; "
"either 'explicit' (default) or 'node'",
&EnvironmentOptions::experimental_specifier_resolution,
kAllowedInEnvironment);
AddAlias("--es-module-specifier-resolution",
"--experimental-specifier-resolution");
AddOption("--no-deprecation",
"silence deprecation warnings",
&EnvironmentOptions::no_deprecation,
kAllowedInEnvironment);
AddOption("--no-force-async-hooks-checks",
"disable checks for async_hooks",
&EnvironmentOptions::no_force_async_hooks_checks,
kAllowedInEnvironment);
AddOption("--no-warnings",
"silence all process warnings",
&EnvironmentOptions::no_warnings,
kAllowedInEnvironment);
AddOption("--force-context-aware",
"disable loading non-context-aware addons",
&EnvironmentOptions::force_context_aware,
kAllowedInEnvironment);
AddOption("--pending-deprecation",
"emit pending deprecation warnings",
&EnvironmentOptions::pending_deprecation,
kAllowedInEnvironment);
AddOption("--preserve-symlinks",
"preserve symbolic links when resolving",
&EnvironmentOptions::preserve_symlinks,
kAllowedInEnvironment);
AddOption("--preserve-symlinks-main",
"preserve symbolic links when resolving the main module",
&EnvironmentOptions::preserve_symlinks_main,
kAllowedInEnvironment);
AddOption("--prof",
"Generate V8 profiler output.",
V8Option{});
AddOption("--prof-process",
"process V8 profiler output generated using --prof",
&EnvironmentOptions::prof_process);
// Options after --prof-process are passed through to the prof processor.
AddAlias("--prof-process", { "--prof-process", "--" });
#if HAVE_INSPECTOR
AddOption("--cpu-prof",
"Start the V8 CPU profiler on start up, and write the CPU profile "
"to disk before exit. If --cpu-prof-dir is not specified, write "
"the profile to the current working directory.",
&EnvironmentOptions::cpu_prof);
AddOption("--cpu-prof-name",
"specified file name of the V8 CPU profile generated with "
"--cpu-prof",
&EnvironmentOptions::cpu_prof_name);
AddOption("--cpu-prof-interval",
"specified sampling interval in microseconds for the V8 CPU "
"profile generated with --cpu-prof. (default: 1000)",
&EnvironmentOptions::cpu_prof_interval);
AddOption("--cpu-prof-dir",
"Directory where the V8 profiles generated by --cpu-prof will be "
"placed. Does not affect --prof.",
&EnvironmentOptions::cpu_prof_dir);
AddOption(
"--heap-prof",
"Start the V8 heap profiler on start up, and write the heap profile "
"to disk before exit. If --heap-prof-dir is not specified, write "
"the profile to the current working directory.",
&EnvironmentOptions::heap_prof);
AddOption("--heap-prof-name",
"specified file name of the V8 heap profile generated with "
"--heap-prof",
&EnvironmentOptions::heap_prof_name);
AddOption("--heap-prof-dir",
"Directory where the V8 heap profiles generated by --heap-prof "
"will be placed.",
&EnvironmentOptions::heap_prof_dir);
AddOption("--heap-prof-interval",
"specified sampling interval in bytes for the V8 heap "
"profile generated with --heap-prof. (default: 512 * 1024)",
&EnvironmentOptions::heap_prof_interval);
#endif // HAVE_INSPECTOR
AddOption("--max-http-header-size",
"set the maximum size of HTTP headers (default: 16384 (16KB))",
&EnvironmentOptions::max_http_header_size,
kAllowedInEnvironment);
AddOption("--redirect-warnings",
"write warnings to file instead of stderr",
&EnvironmentOptions::redirect_warnings,
kAllowedInEnvironment);
AddOption("--test-udp-no-try-send", "", // For testing only.
&EnvironmentOptions::test_udp_no_try_send);
AddOption("--throw-deprecation",
"throw an exception on deprecations",
&EnvironmentOptions::throw_deprecation,
kAllowedInEnvironment);
AddOption("--trace-atomics-wait",
"trace Atomics.wait() operations",
&EnvironmentOptions::trace_atomics_wait,
kAllowedInEnvironment);
AddOption("--trace-deprecation",
"show stack traces on deprecations",
&EnvironmentOptions::trace_deprecation,
kAllowedInEnvironment);
AddOption("--trace-exit",
"show stack trace when an environment exits",
&EnvironmentOptions::trace_exit,
kAllowedInEnvironment);
AddOption("--trace-sync-io",
"show stack trace when use of sync IO is detected after the "
"first tick",
&EnvironmentOptions::trace_sync_io,
kAllowedInEnvironment);
AddOption("--trace-tls",
"prints TLS packet trace information to stderr",
&EnvironmentOptions::trace_tls,
kAllowedInEnvironment);
AddOption("--trace-uncaught",
"show stack traces for the `throw` behind uncaught exceptions",
&EnvironmentOptions::trace_uncaught,
kAllowedInEnvironment);
AddOption("--trace-warnings",
"show stack traces on process warnings",
&EnvironmentOptions::trace_warnings,
kAllowedInEnvironment);
AddOption("--unhandled-rejections",
"define unhandled rejections behavior. Options are 'strict' "
"(always raise an error), 'throw' (raise an error unless "
"'unhandledRejection' hook is set), 'warn' (log a warning), 'none' "
"(silence warnings), 'warn-with-error-code' (log a warning and set "
"exit code 1 unless 'unhandledRejection' hook is set). (default: "
"throw)",
&EnvironmentOptions::unhandled_rejections,
kAllowedInEnvironment);
AddOption("--verify-base-objects",
"", /* undocumented, only for debugging */
&EnvironmentOptions::verify_base_objects,
kAllowedInEnvironment);
AddOption("--check",
"syntax check script without executing",
&EnvironmentOptions::syntax_check_only);
AddAlias("-c", "--check");
// This option is only so that we can tell --eval with an empty string from
// no eval at all. Having it not start with a dash makes it inaccessible
// from the parser itself, but available for using Implies().
// TODO(addaleax): When moving --help over to something generated from the
// programmatic descriptions, this will need some special care.
// (See also [ssl_openssl_cert_store] below.)
AddOption("[has_eval_string]", "", &EnvironmentOptions::has_eval_string);
AddOption("--eval", "evaluate script", &EnvironmentOptions::eval_string);
Implies("--eval", "[has_eval_string]");
AddOption("--print",
"evaluate script and print result",
&EnvironmentOptions::print_eval);
AddAlias("-e", "--eval");
AddAlias("--print <arg>", "-pe");
AddAlias("-pe", { "--print", "--eval" });
AddAlias("-p", "--print");
AddOption("--require",
"module to preload (option can be repeated)",
&EnvironmentOptions::preload_modules,
kAllowedInEnvironment);
AddAlias("-r", "--require");
AddOption("--interactive",
"always enter the REPL even if stdin does not appear "
"to be a terminal",
&EnvironmentOptions::force_repl);
AddAlias("-i", "--interactive");
AddOption("--napi-modules", "", NoOp{}, kAllowedInEnvironment);
AddOption("--tls-keylog",
"log TLS decryption keys to named file for traffic analysis",
&EnvironmentOptions::tls_keylog, kAllowedInEnvironment);
AddOption("--tls-min-v1.0",
"set default TLS minimum to TLSv1.0 (default: TLSv1.2)",
&EnvironmentOptions::tls_min_v1_0,
kAllowedInEnvironment);
AddOption("--tls-min-v1.1",
"set default TLS minimum to TLSv1.1 (default: TLSv1.2)",
&EnvironmentOptions::tls_min_v1_1,
kAllowedInEnvironment);
AddOption("--tls-min-v1.2",
"set default TLS minimum to TLSv1.2 (default: TLSv1.2)",
&EnvironmentOptions::tls_min_v1_2,
kAllowedInEnvironment);
AddOption("--tls-min-v1.3",
"set default TLS minimum to TLSv1.3 (default: TLSv1.2)",
&EnvironmentOptions::tls_min_v1_3,
kAllowedInEnvironment);
AddOption("--tls-max-v1.2",
"set default TLS maximum to TLSv1.2 (default: TLSv1.3)",
&EnvironmentOptions::tls_max_v1_2,
kAllowedInEnvironment);
// Current plan is:
// - 11.x and below: TLS1.3 is opt-in with --tls-max-v1.3
// - 12.x: TLS1.3 is opt-out with --tls-max-v1.2
// In either case, support both options they are uniformly available.
AddOption("--tls-max-v1.3",
"set default TLS maximum to TLSv1.3 (default: TLSv1.3)",
&EnvironmentOptions::tls_max_v1_3,
kAllowedInEnvironment);
}
PerIsolateOptionsParser::PerIsolateOptionsParser(
const EnvironmentOptionsParser& eop) {
AddOption("--track-heap-objects",
"track heap object allocations for heap snapshots",
&PerIsolateOptions::track_heap_objects,
kAllowedInEnvironment);
AddOption("--no-node-snapshot",
"", // It's a debug-only option.
&PerIsolateOptions::no_node_snapshot,
kAllowedInEnvironment);
// Explicitly add some V8 flags to mark them as allowed in NODE_OPTIONS.
AddOption("--abort-on-uncaught-exception",
"aborting instead of exiting causes a core file to be generated "
"for analysis",
V8Option{},
kAllowedInEnvironment);
AddOption("--interpreted-frames-native-stack",
"help system profilers to translate JavaScript interpreted frames",
V8Option{}, kAllowedInEnvironment);
AddOption("--max-old-space-size", "", V8Option{}, kAllowedInEnvironment);
AddOption("--perf-basic-prof", "", V8Option{}, kAllowedInEnvironment);
AddOption("--perf-basic-prof-only-functions",
"",
V8Option{},
kAllowedInEnvironment);
AddOption("--perf-prof", "", V8Option{}, kAllowedInEnvironment);
AddOption("--perf-prof-unwinding-info",
"",
V8Option{},
kAllowedInEnvironment);
AddOption("--stack-trace-limit", "", V8Option{}, kAllowedInEnvironment);
AddOption("--disallow-code-generation-from-strings",
"disallow eval and friends",
V8Option{},
kAllowedInEnvironment);
AddOption("--huge-max-old-generation-size",
"increase default maximum heap size on machines with 16GB memory "
"or more",
V8Option{},
kAllowedInEnvironment);
AddOption("--jitless",
"disable runtime allocation of executable memory",
V8Option{},
kAllowedInEnvironment);
AddOption("--report-uncaught-exception",
"generate diagnostic report on uncaught exceptions",
&PerIsolateOptions::report_uncaught_exception,
kAllowedInEnvironment);
AddOption("--report-on-signal",
"generate diagnostic report upon receiving signals",
&PerIsolateOptions::report_on_signal,
kAllowedInEnvironment);
AddOption("--report-signal",
"causes diagnostic report to be produced on provided signal,"
" unsupported in Windows. (default: SIGUSR2)",
&PerIsolateOptions::report_signal,
kAllowedInEnvironment);
Implies("--report-signal", "--report-on-signal");
AddOption("--experimental-top-level-await",
"",
&PerIsolateOptions::experimental_top_level_await,
kAllowedInEnvironment);
AddOption("--harmony-top-level-await", "", V8Option{});
Implies("--experimental-top-level-await", "--harmony-top-level-await");
Implies("--harmony-top-level-await", "--experimental-top-level-await");
ImpliesNot("--no-harmony-top-level-await", "--experimental-top-level-await");
Insert(eop, &PerIsolateOptions::get_per_env_options);
}
PerProcessOptionsParser::PerProcessOptionsParser(
const PerIsolateOptionsParser& iop) {
AddOption("--title",
"the process title to use on startup",
&PerProcessOptions::title,
kAllowedInEnvironment);
AddOption("--trace-event-categories",
"comma separated list of trace event categories to record",
&PerProcessOptions::trace_event_categories,
kAllowedInEnvironment);
AddOption("--trace-event-file-pattern",
"Template string specifying the filepath for the trace-events "
"data, it supports ${rotation} and ${pid}.",
&PerProcessOptions::trace_event_file_pattern,
kAllowedInEnvironment);
AddAlias("--trace-events-enabled", {
"--trace-event-categories", "v8,node,node.async_hooks" });
AddOption("--v8-pool-size",
"set V8's thread pool size",
&PerProcessOptions::v8_thread_pool_size,
kAllowedInEnvironment);
AddOption("--zero-fill-buffers",
"automatically zero-fill all newly allocated Buffer and "
"SlowBuffer instances",
&PerProcessOptions::zero_fill_all_buffers,
kAllowedInEnvironment);
AddOption("--debug-arraybuffer-allocations",
"", /* undocumented, only for debugging */
&PerProcessOptions::debug_arraybuffer_allocations,
kAllowedInEnvironment);
AddOption("--disable-proto",
"disable Object.prototype.__proto__",
&PerProcessOptions::disable_proto,
kAllowedInEnvironment);
AddOption("--snapshot-main",
"Path to the entry point file used to build user snapshot",
&PerProcessOptions::snapshot_main,
kDisallowedInEnvironment);
AddOption("--snapshot-blob",
"Path to the snapshot blob that's either the result of snapshot"
"building, or the blob that is used to restore the application "
"state",
&PerProcessOptions::snapshot_blob,
kAllowedInEnvironment);
// 12.x renamed this inadvertently, so alias it for consistency within the
// release line, while using the original name for consistency with older
// release lines.
AddOption("--security-revert", "", &PerProcessOptions::security_reverts);
AddAlias("--security-reverts", "--security-revert");
AddOption("--completion-bash",
"print source-able bash completion script",
&PerProcessOptions::print_bash_completion);
AddOption("--help",
"print node command line options",
&PerProcessOptions::print_help);
AddAlias("-h", "--help");
AddOption(
"--version", "print Node.js version", &PerProcessOptions::print_version);
AddAlias("-v", "--version");
AddOption("--v8-options",
"print V8 command line options",
&PerProcessOptions::print_v8_help);
AddOption("--report-compact",
"output compact single-line JSON",
&PerProcessOptions::report_compact,
kAllowedInEnvironment);
AddOption("--report-dir",
"define custom report pathname."
" (default: current working directory)",
&PerProcessOptions::report_directory,
kAllowedInEnvironment);
AddAlias("--report-directory", "--report-dir");
AddOption("--report-filename",
"define custom report file name."
" (default: YYYYMMDD.HHMMSS.PID.SEQUENCE#.txt)",
&PerProcessOptions::report_filename,
kAllowedInEnvironment);
AddOption("--report-on-fatalerror",
"generate diagnostic report on fatal (internal) errors",
&PerProcessOptions::report_on_fatalerror,
kAllowedInEnvironment);
#ifdef NODE_HAVE_I18N_SUPPORT
AddOption("--icu-data-dir",
"set ICU data load path to dir (overrides NODE_ICU_DATA)"
#ifndef NODE_HAVE_SMALL_ICU
" (note: linked-in ICU data is present)"
#endif
,
&PerProcessOptions::icu_data_dir,
kAllowedInEnvironment);
#endif
#if HAVE_OPENSSL
AddOption("--openssl-config",
"load OpenSSL configuration from the specified file "
"(overrides OPENSSL_CONF)",
&PerProcessOptions::openssl_config,
kAllowedInEnvironment);
AddOption("--tls-cipher-list",
"use an alternative default TLS cipher list",
&PerProcessOptions::tls_cipher_list,
kAllowedInEnvironment);
AddOption("--use-openssl-ca",
"use OpenSSL's default CA store"
#if defined(NODE_OPENSSL_CERT_STORE)
" (default)"
#endif
,
&PerProcessOptions::use_openssl_ca,
kAllowedInEnvironment);
AddOption("--use-bundled-ca",
"use bundled CA store"
#if !defined(NODE_OPENSSL_CERT_STORE)
" (default)"
#endif
,
&PerProcessOptions::use_bundled_ca,
kAllowedInEnvironment);
// Similar to [has_eval_string] above, except that the separation between
// this and use_openssl_ca only exists for option validation after parsing.
// This is not ideal.
AddOption("[ssl_openssl_cert_store]",
"",
&PerProcessOptions::ssl_openssl_cert_store);
Implies("--use-openssl-ca", "[ssl_openssl_cert_store]");
ImpliesNot("--use-bundled-ca", "[ssl_openssl_cert_store]");
AddOption("--enable-fips",
"enable FIPS crypto at startup",
&PerProcessOptions::enable_fips_crypto,
kAllowedInEnvironment);
AddOption("--force-fips",
"force FIPS crypto (cannot be disabled)",
&PerProcessOptions::force_fips_crypto,
kAllowedInEnvironment);
AddOption("--secure-heap",
"total size of the OpenSSL secure heap",
&PerProcessOptions::secure_heap,
kAllowedInEnvironment);
AddOption("--secure-heap-min",
"minimum allocation size from the OpenSSL secure heap",
&PerProcessOptions::secure_heap_min,
kAllowedInEnvironment);
#endif
AddOption("--use-largepages",
"Map the Node.js static code to large pages. Options are "
"'off' (the default value, meaning do not map), "
"'on' (map and ignore failure, reporting it to stderr), "
"or 'silent' (map and silently ignore failure)",
&PerProcessOptions::use_largepages,
kAllowedInEnvironment);
AddOption("--trace-sigint",
"enable printing JavaScript stacktrace on SIGINT",
&PerProcessOptions::trace_sigint,
kAllowedInEnvironment);
Insert(iop, &PerProcessOptions::get_per_isolate_options);
AddOption("--node-memory-debug",
"Run with extra debug checks for memory leaks in Node.js itself",
NoOp{}, kAllowedInEnvironment);
Implies("--node-memory-debug", "--debug-arraybuffer-allocations");
Implies("--node-memory-debug", "--verify-base-objects");
}
inline std::string RemoveBrackets(const std::string& host) {
if (!host.empty() && host.front() == '[' && host.back() == ']')
return host.substr(1, host.size() - 2);
else
return host;
}
inline int ParseAndValidatePort(const std::string& port,
std::vector<std::string>* errors) {
char* endptr;
errno = 0;
const unsigned long result = // NOLINT(runtime/int)
strtoul(port.c_str(), &endptr, 10);
if (errno != 0 || *endptr != '\0'||
(result != 0 && result < 1024) || result > 65535) {
errors->push_back(" must be 0 or in range 1024 to 65535.");
}
return static_cast<int>(result);
}
HostPort SplitHostPort(const std::string& arg,
std::vector<std::string>* errors) {
// remove_brackets only works if no port is specified
// so if it has an effect only an IPv6 address was specified.
std::string host = RemoveBrackets(arg);
if (host.length() < arg.length())
return HostPort{host, DebugOptions::kDefaultInspectorPort};
size_t colon = arg.rfind(':');
if (colon == std::string::npos) {
// Either a port number or a host name. Assume that
// if it's not all decimal digits, it's a host name.
for (char c : arg) {
if (c < '0' || c > '9') {
return HostPort{arg, DebugOptions::kDefaultInspectorPort};
}
}
return HostPort { "", ParseAndValidatePort(arg, errors) };
}
// Host and port found:
return HostPort { RemoveBrackets(arg.substr(0, colon)),
ParseAndValidatePort(arg.substr(colon + 1), errors) };
}
std::string GetBashCompletion() {
Mutex::ScopedLock lock(per_process::cli_options_mutex);
const auto& parser = _ppop_instance;
std::ostringstream out;
out << "_node_complete() {\n"
" local cur_word options\n"
" cur_word=\"${COMP_WORDS[COMP_CWORD]}\"\n"
" if [[ \"${cur_word}\" == -* ]] ; then\n"
" COMPREPLY=( $(compgen -W '";
for (const auto& item : parser.options_) {
if (item.first[0] != '[') {
out << item.first << " ";
}
}
for (const auto& item : parser.aliases_) {
if (item.first[0] != '[') {
out << item.first << " ";
}
}
if (parser.aliases_.size() > 0) {
out.seekp(-1, out.cur); // Strip the trailing space
}
out << "' -- \"${cur_word}\") )\n"
" return 0\n"
" else\n"
" COMPREPLY=( $(compgen -f \"${cur_word}\") )\n"
" return 0\n"
" fi\n"
"}\n"
"complete -o filenames -o nospace -o bashdefault "
"-F _node_complete node node_g";
return out.str();
}
// Return a map containing all the options and their metadata as well
// as the aliases
void GetOptions(const FunctionCallbackInfo<Value>& args) {
Mutex::ScopedLock lock(per_process::cli_options_mutex);
Environment* env = Environment::GetCurrent(args);
if (!env->has_run_bootstrapping_code()) {
// No code because this is an assertion.
return env->ThrowError(
"Should not query options before bootstrapping is done");
}
env->set_has_serialized_options(true);
Isolate* isolate = env->isolate();
Local<Context> context = env->context();
// Temporarily act as if the current Environment's/IsolateData's options were
// the default options, i.e. like they are the ones we'd access for global
// options parsing, so that all options are available from the main parser.
auto original_per_isolate = per_process::cli_options->per_isolate;
per_process::cli_options->per_isolate = env->isolate_data()->options();
auto original_per_env = per_process::cli_options->per_isolate->per_env;
per_process::cli_options->per_isolate->per_env = env->options();
auto on_scope_leave = OnScopeLeave([&]() {
per_process::cli_options->per_isolate->per_env = original_per_env;
per_process::cli_options->per_isolate = original_per_isolate;
});
Local<Map> options = Map::New(isolate);
if (options
->SetPrototype(context, env->primordials_safe_map_prototype_object())
.IsNothing()) {
return;
}
for (const auto& item : _ppop_instance.options_) {
Local<Value> value;
const auto& option_info = item.second;
auto field = option_info.field;
PerProcessOptions* opts = per_process::cli_options.get();
switch (option_info.type) {
case kNoOp:
case kV8Option:
// Special case for --abort-on-uncaught-exception which is also
// respected by Node.js internals
if (item.first == "--abort-on-uncaught-exception") {
value = Boolean::New(
isolate, original_per_env->abort_on_uncaught_exception);
} else {
value = Undefined(isolate);
}
break;
case kBoolean:
value = Boolean::New(isolate,
*_ppop_instance.Lookup<bool>(field, opts));
break;
case kInteger:
value = Number::New(
isolate,
static_cast<double>(*_ppop_instance.Lookup<int64_t>(field, opts)));
break;
case kUInteger:
value = Number::New(
isolate,
static_cast<double>(*_ppop_instance.Lookup<uint64_t>(field, opts)));
break;
case kString:
if (!ToV8Value(context,
*_ppop_instance.Lookup<std::string>(field, opts))
.ToLocal(&value)) {
return;
}
break;
case kStringList:
if (!ToV8Value(context,
*_ppop_instance.Lookup<StringVector>(field, opts))
.ToLocal(&value)) {
return;
}
break;
case kHostPort: {
const HostPort& host_port =
*_ppop_instance.Lookup<HostPort>(field, opts);
Local<Object> obj = Object::New(isolate);
Local<Value> host;
if (!ToV8Value(context, host_port.host()).ToLocal(&host) ||
obj->Set(context, env->host_string(), host).IsNothing() ||
obj->Set(context,
env->port_string(),
Integer::New(isolate, host_port.port()))
.IsNothing()) {
return;
}
value = obj;
break;
}
default: