Add --extra-headers option

src/net/tools/naive/naive_proxy_bin.cc

@@ -16,6 +16,7 @@
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "base/macros.h"
+#include "base/rand_util.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
@@ -36,6 +37,8 @@
 #include "net/http/http_auth.h"
 #include "net/http/http_auth_cache.h"
 #include "net/http/http_network_session.h"
+#include "net/http/http_request_headers.h"
+#include "net/http/http_response_headers.h"
 #include "net/http/http_transaction_factory.h"
 #include "net/log/file_net_log_observer.h"
 #include "net/log/net_log.h"
@@ -79,6 +82,7 @@ struct CommandLine {
   std::string listen;
   std::string proxy;
   bool padding;
+  std::string extra_headers;
   std::string host_resolver_rules;
   std::string resolver_range;
   bool no_log;
@@ -92,6 +96,7 @@ struct Params {
   std::string listen_addr;
   int listen_port;
   bool use_padding;
+  net::HttpRequestHeaders extra_headers;
   std::string proxy_url;
   std::u16string proxy_user;
   std::u16string proxy_pass;
@@ -115,79 +120,6 @@ std::unique_ptr<base::Value> GetConstants() {
   return constants_dict;
 }
 
-std::unique_ptr<net::URLRequestContext> BuildCertURLRequestContext(
-    net::NetLog* net_log) {
-  net::URLRequestContextBuilder builder;
-
-  builder.DisableHttpCache();
-  builder.set_net_log(net_log);
-
-  net::ProxyConfig proxy_config;
-  auto proxy_service =
-      net::ConfiguredProxyResolutionService::CreateWithoutProxyResolver(
-          std::make_unique<net::ProxyConfigServiceFixed>(
-              net::ProxyConfigWithAnnotation(proxy_config, kTrafficAnnotation)),
-          net_log);
-  proxy_service->ForceReloadProxyConfig();
-  builder.set_proxy_resolution_service(std::move(proxy_service));
-
-  return builder.Build();
-}
-
-// Builds a URLRequestContext assuming there's only a single loop.
-std::unique_ptr<net::URLRequestContext> BuildURLRequestContext(
-    const Params& params,
-    scoped_refptr<net::CertNetFetcherURLRequest> cert_net_fetcher,
-    net::NetLog* net_log) {
-  net::URLRequestContextBuilder builder;
-
-  builder.DisableHttpCache();
-  builder.set_net_log(net_log);
-
-  net::ProxyConfig proxy_config;
-  proxy_config.proxy_rules().ParseFromString(params.proxy_url);
-  LOG(INFO) << "Proxying via " << params.proxy_url;
-  auto proxy_service =
-      net::ConfiguredProxyResolutionService::CreateWithoutProxyResolver(
-          std::make_unique<net::ProxyConfigServiceFixed>(
-              net::ProxyConfigWithAnnotation(proxy_config, kTrafficAnnotation)),
-          net_log);
-  proxy_service->ForceReloadProxyConfig();
-  builder.set_proxy_resolution_service(std::move(proxy_service));
-
-  if (!params.host_resolver_rules.empty()) {
-    builder.set_host_mapping_rules(params.host_resolver_rules);
-  }
-
-  builder.SetCertVerifier(
-      net::CertVerifier::CreateDefault(std::move(cert_net_fetcher)));
-
-  auto context = builder.Build();
-
-  if (!params.proxy_url.empty() && !params.proxy_user.empty() &&
-      !params.proxy_pass.empty()) {
-    auto* session = context->http_transaction_factory()->GetSession();
-    auto* auth_cache = session->http_auth_cache();
-    std::string proxy_url = params.proxy_url;
-    if (proxy_url.compare(0, 7, "quic://") == 0) {
-      proxy_url.replace(0, 4, "https");
-      auto* quic = context->quic_context()->params();
-      const auto& versions = quic::SupportedVersions();
-      quic->supported_versions.assign(versions.begin(), versions.end());
-      quic->origins_to_force_quic_on.insert(
-          net::HostPortPair::FromURL(GURL(proxy_url)));
-    }
-    GURL auth_origin(proxy_url);
-    net::AuthCredentials credentials(params.proxy_user, params.proxy_pass);
-    auth_cache->Add(auth_origin, net::HttpAuth::AUTH_PROXY,
-                    /*realm=*/std::string(), net::HttpAuth::AUTH_SCHEME_BASIC,
-                    net::NetworkIsolationKey(), /*challenge=*/"Basic",
-                    credentials, /*path=*/"/");
-  }
-
-  return context;
-}
-
 void GetCommandLine(const base::CommandLine& proc, CommandLine* cmdline) {
   if (proc.HasSwitch("h") || proc.HasSwitch("help")) {
     std::cout << "Usage: naive { OPTIONS | config.json }\n"
@@ -201,6 +133,7 @@ void GetCommandLine(const base::CommandLine& proc, CommandLine* cmdline) {
                  "--proxy=<proto>://[<user>:<pass>@]<hostname>[:<port>]\n"
                  "                           proto: https, quic\n"
                  "--padding                  Use padding\n"
+                 "--extra-headers=...        Extra headers split by CRLF\n"
                  "--host-resolver-rules=...  Resolver rules\n"
                  "--resolver-range=...       Redirect resolver range\n"
                  "--log[=<path>]             Log to stderr, or file\n"
@@ -218,6 +151,7 @@ void GetCommandLine(const base::CommandLine& proc, CommandLine* cmdline) {
   cmdline->listen = proc.GetSwitchValueASCII("listen");
   cmdline->proxy = proc.GetSwitchValueASCII("proxy");
   cmdline->padding = proc.HasSwitch("padding");
+  cmdline->extra_headers = proc.GetSwitchValueASCII("extra-headers");
   cmdline->host_resolver_rules =
       proc.GetSwitchValueASCII("host-resolver-rules");
   cmdline->resolver_range = proc.GetSwitchValueASCII("resolver-range");
@@ -242,36 +176,41 @@ void GetCommandLineFromConfig(const base::FilePath& config_path,
     std::cerr << "Invalid config format" << std::endl;
     exit(EXIT_FAILURE);
   }
-  if (value->FindKeyOfType("listen", base::Value::Type::STRING)) {
-    cmdline->listen = value->FindKey("listen")->GetString();
+  const auto* listen = value->FindStringKey("listen");
+  if (listen) {
+    cmdline->listen = *listen;
   }
-  if (value->FindKeyOfType("proxy", base::Value::Type::STRING)) {
-    cmdline->proxy = value->FindKey("proxy")->GetString();
+  const auto* proxy = value->FindStringKey("proxy");
+  if (proxy) {
+    cmdline->proxy = *proxy;
   }
-  cmdline->padding = false;
-  if (value->FindKeyOfType("padding", base::Value::Type::BOOLEAN)) {
-    cmdline->padding = value->FindKey("padding")->GetBool();
+  cmdline->padding = value->FindBoolKey("padding").value_or(false);
+  const auto* extra_headers = value->FindStringKey("extra-headers");
+  if (extra_headers) {
+    cmdline->extra_headers = *extra_headers;
   }
-  if (value->FindKeyOfType("host-resolver-rules", base::Value::Type::STRING)) {
-    cmdline->host_resolver_rules =
-        value->FindKey("host-resolver-rules")->GetString();
+  const auto* host_resolver_rules = value->FindStringKey("host-resolver-rules");
+  if (host_resolver_rules) {
+    cmdline->host_resolver_rules = *host_resolver_rules;
   }
-  if (value->FindKeyOfType("resolver-range", base::Value::Type::STRING)) {
-    cmdline->resolver_range = value->FindKey("resolver-range")->GetString();
+  const auto* resolver_range = value->FindStringKey("resolver-range");
+  if (resolver_range) {
+    cmdline->resolver_range = *resolver_range;
   }
   cmdline->no_log = true;
-  if (value->FindKeyOfType("log", base::Value::Type::STRING)) {
+  const auto* log = value->FindStringKey("log");
+  if (log) {
     cmdline->no_log = false;
-    cmdline->log =
-        base::FilePath::FromUTF8Unsafe(value->FindKey("log")->GetString());
+    cmdline->log = base::FilePath::FromUTF8Unsafe(*log);
   }
-  if (value->FindKeyOfType("log-net-log", base::Value::Type::STRING)) {
-    cmdline->log_net_log = base::FilePath::FromUTF8Unsafe(
-        value->FindKey("log-net-log")->GetString());
+  const auto* log_net_log = value->FindStringKey("log-net-log");
+  if (log_net_log) {
+    cmdline->log_net_log = base::FilePath::FromUTF8Unsafe(*log_net_log);
   }
-  if (value->FindKeyOfType("ssl-key-log-file", base::Value::Type::STRING)) {
-    cmdline->ssl_key_log_file = base::FilePath::FromUTF8Unsafe(
-        value->FindKey("ssl-key-log-file")->GetString());
+  const auto* ssl_key_log_file = value->FindStringKey("ssl-key-log-file");
+  if (ssl_key_log_file) {
+    cmdline->ssl_key_log_file =
+        base::FilePath::FromUTF8Unsafe(*ssl_key_log_file);
   }
 }
 
@@ -344,6 +283,8 @@ bool ParseCommandLine(const CommandLine& cmdline, Params* params) {
 
   params->use_padding = cmdline.padding;
 
+  params->extra_headers.AddHeadersFromString(cmdline.extra_headers);
+
   params->host_resolver_rules = cmdline.host_resolver_rules;
 
   if (params->protocol == net::NaiveConnection::kRedir) {
@@ -421,7 +362,110 @@ class PrintingLogObserver : public NetLog::ThreadSafeObserver {
  private:
   DISALLOW_COPY_AND_ASSIGN(PrintingLogObserver);
 };
+}  // namespace
 
+class ProxyInfo;
+class ProxyServer;
+
+namespace {
+class NaiveProxyDelegate : public ProxyDelegate {
+ public:
+  NaiveProxyDelegate(const Params& params) : params_(params) {}
+  void OnResolveProxy(const GURL& url,
+                      const std::string& method,
+                      const ProxyRetryInfoMap& proxy_retry_info,
+                      ProxyInfo* result) override {}
+  void OnFallback(const ProxyServer& bad_proxy, int net_error) override {}
+
+  void OnBeforeTunnelRequest(const ProxyServer& proxy_server,
+                             HttpRequestHeaders* extra_headers) override {
+    extra_headers->SetHeader("Padding",
+                             std::string(base::RandInt(16, 32), '.'));
+    extra_headers->MergeFrom(params_.extra_headers);
+  }
+
+  Error OnTunnelHeadersReceived(
+      const ProxyServer& proxy_server,
+      const HttpResponseHeaders& response_headers) override {
+    return OK;
+  }
+
+ private:
+  const Params& params_;
+};
+
+std::unique_ptr<URLRequestContext> BuildCertURLRequestContext(NetLog* net_log) {
+  URLRequestContextBuilder builder;
+
+  builder.DisableHttpCache();
+  builder.set_net_log(net_log);
+
+  ProxyConfig proxy_config;
+  auto proxy_service =
+      ConfiguredProxyResolutionService::CreateWithoutProxyResolver(
+          std::make_unique<ProxyConfigServiceFixed>(
+              ProxyConfigWithAnnotation(proxy_config, kTrafficAnnotation)),
+          net_log);
+  proxy_service->ForceReloadProxyConfig();
+  builder.set_proxy_resolution_service(std::move(proxy_service));
+
+  return builder.Build();
+}
+
+// Builds a URLRequestContext assuming there's only a single loop.
+std::unique_ptr<URLRequestContext> BuildURLRequestContext(
+    const Params& params,
+    scoped_refptr<CertNetFetcherURLRequest> cert_net_fetcher,
+    NetLog* net_log) {
+  URLRequestContextBuilder builder;
+
+  builder.DisableHttpCache();
+  builder.set_net_log(net_log);
+
+  ProxyConfig proxy_config;
+  proxy_config.proxy_rules().ParseFromString(params.proxy_url);
+  LOG(INFO) << "Proxying via " << params.proxy_url;
+  auto proxy_service =
+      ConfiguredProxyResolutionService::CreateWithoutProxyResolver(
+          std::make_unique<ProxyConfigServiceFixed>(
+              ProxyConfigWithAnnotation(proxy_config, kTrafficAnnotation)),
+          net_log);
+  proxy_service->ForceReloadProxyConfig();
+  builder.set_proxy_resolution_service(std::move(proxy_service));
+
+  if (!params.host_resolver_rules.empty()) {
+    builder.set_host_mapping_rules(params.host_resolver_rules);
+  }
+
+  builder.SetCertVerifier(
+      CertVerifier::CreateDefault(std::move(cert_net_fetcher)));
+
+  builder.set_proxy_delegate(std::make_unique<NaiveProxyDelegate>(params));
+
+  auto context = builder.Build();
+
+  if (!params.proxy_url.empty() && !params.proxy_user.empty() &&
+      !params.proxy_pass.empty()) {
+    auto* session = context->http_transaction_factory()->GetSession();
+    auto* auth_cache = session->http_auth_cache();
+    std::string proxy_url = params.proxy_url;
+    if (proxy_url.compare(0, 7, "quic://") == 0) {
+      proxy_url.replace(0, 4, "https");
+      auto* quic = context->quic_context()->params();
+      const auto& versions = quic::SupportedVersions();
+      quic->supported_versions.assign(versions.begin(), versions.end());
+      quic->origins_to_force_quic_on.insert(
+          net::HostPortPair::FromURL(GURL(proxy_url)));
+    }
+    GURL auth_origin(proxy_url);
+    AuthCredentials credentials(params.proxy_user, params.proxy_pass);
+    auth_cache->Add(auth_origin, HttpAuth::AUTH_PROXY,
+                    /*realm=*/{}, HttpAuth::AUTH_SCHEME_BASIC, {},
+                    /*challenge=*/"Basic", credentials, /*path=*/"/");
+  }
+
+  return context;
+}
 }  // namespace
 }  // namespace net
 
@@ -492,14 +536,14 @@ int main(int argc, char* argv[]) {
                          net::NetLogCaptureMode::kDefault);
   }
 
-  auto cert_context = BuildCertURLRequestContext(net_log);
+  auto cert_context = net::BuildCertURLRequestContext(net_log);
   scoped_refptr<net::CertNetFetcherURLRequest> cert_net_fetcher;
 #if defined(OS_LINUX) || defined(OS_MAC) || defined(OS_ANDROID)
   cert_net_fetcher = base::MakeRefCounted<net::CertNetFetcherURLRequest>();
   cert_net_fetcher->SetURLRequestContext(cert_context.get());
 #endif
   auto context =
-      BuildURLRequestContext(params, std::move(cert_net_fetcher), net_log);
+      net::BuildURLRequestContext(params, std::move(cert_net_fetcher), net_log);
   auto* session = context->http_transaction_factory()->GetSession();
 
   auto listen_socket =