Allow building masque_tcp_server in open-source bazel QUICHE build

The certificate_file and key_file absl flags were conflicting with other flags with the same name so I renamed them.

PiperOrigin-RevId: 845298822

quiche/BUILD.bazel

diff --git a/quiche/BUILD.bazel b/quiche/BUILD.bazel
index 5e88098..2d9d88d 100644
--- a/quiche/BUILD.bazel
+++ b/quiche/BUILD.bazel
@@ -611,6 +611,25 @@
 )
 
 cc_binary(
+    name = "masque_tcp_server",
+    srcs = ["quic/masque/masque_tcp_server_bin.cc"],
+    deps = [
+        ":binary_http",
+        ":io_tool_support",
+        ":masque_support",
+        ":oblivious_http",
+        ":quiche_core",
+        ":quiche_tool_support",
+        "@boringssl//:crypto",
+        "@boringssl//:ssl",
+        "@com_google_absl//absl/container:flat_hash_map",
+        "@com_google_absl//absl/status",
+        "@com_google_absl//absl/status:statusor",
+        "@com_google_absl//absl/strings",
+    ],
+)
+
+cc_binary(
     name = "web_transport_test_server",
     srcs = ["quic/tools/web_transport_test_server.cc"],
     deps = [

quiche/quic/masque/masque_tcp_server_bin.cc

diff --git a/quiche/quic/masque/masque_tcp_server_bin.cc b/quiche/quic/masque/masque_tcp_server_bin.cc
index 3c04f62..4b51846 100644
--- a/quiche/quic/masque/masque_tcp_server_bin.cc
+++ b/quiche/quic/masque/masque_tcp_server_bin.cc
@@ -53,10 +53,10 @@
 DEFINE_QUICHE_COMMAND_LINE_FLAG(int32_t, port, 9661,
                                 "The port the MASQUE server will listen on.");
 
-DEFINE_QUICHE_COMMAND_LINE_FLAG(std::string, certificate_file, "",
+DEFINE_QUICHE_COMMAND_LINE_FLAG(std::string, server_certificate_file, "",
                                 "Path to the certificate chain.");
 
-DEFINE_QUICHE_COMMAND_LINE_FLAG(std::string, key_file, "",
+DEFINE_QUICHE_COMMAND_LINE_FLAG(std::string, server_key_file, "",
                                 "Path to the pkcs8 private key.");
 
 DEFINE_QUICHE_COMMAND_LINE_FLAG(std::string, client_root_ca_file, "",
@@ -374,19 +374,20 @@
     }
   }
 
-  bool SetupSslCtx(const std::string& certificate_file,
-                   const std::string& key_file,
+  bool SetupSslCtx(const std::string& server_certificate_file,
+                   const std::string& server_key_file,
                    const std::string& client_root_ca_file) {
     ctx_.reset(SSL_CTX_new(TLS_method()));
 
-    if (!SSL_CTX_use_PrivateKey_file(ctx_.get(), key_file.c_str(),
+    if (!SSL_CTX_use_PrivateKey_file(ctx_.get(), server_key_file.c_str(),
                                      SSL_FILETYPE_PEM)) {
-      QUICHE_LOG(ERROR) << "Failed to load private key: " << key_file;
+      QUICHE_LOG(ERROR) << "Failed to load private key: " << server_key_file;
       return false;
     }
     if (!SSL_CTX_use_certificate_chain_file(ctx_.get(),
-                                            certificate_file.c_str())) {
-      QUICHE_LOG(ERROR) << "Failed to load cert chain: " << certificate_file;
+                                            server_certificate_file.c_str())) {
+      QUICHE_LOG(ERROR) << "Failed to load cert chain: "
+                        << server_certificate_file;
       return false;
     }
     if (!client_root_ca_file.empty()) {
@@ -662,15 +663,16 @@
     return 1;
   }
 
-  std::string certificate_file =
-      quiche::GetQuicheCommandLineFlag(FLAGS_certificate_file);
-  if (certificate_file.empty()) {
-    QUICHE_LOG(ERROR) << "--certificate_file cannot be empty";
+  std::string server_certificate_file =
+      quiche::GetQuicheCommandLineFlag(FLAGS_server_certificate_file);
+  if (server_certificate_file.empty()) {
+    QUICHE_LOG(ERROR) << "--server_certificate_file cannot be empty";
     return 1;
   }
-  std::string key_file = quiche::GetQuicheCommandLineFlag(FLAGS_key_file);
-  if (key_file.empty()) {
-    QUICHE_LOG(ERROR) << "--key_file cannot be empty";
+  std::string server_key_file =
+      quiche::GetQuicheCommandLineFlag(FLAGS_server_key_file);
+  if (server_key_file.empty()) {
+    QUICHE_LOG(ERROR) << "--server_key_file cannot be empty";
     return 1;
   }
   std::string client_root_ca_file =
@@ -724,7 +726,8 @@
                          "set, or neither can be set";
     return 1;
   }
-  if (!server.SetupSslCtx(certificate_file, key_file, client_root_ca_file)) {
+  if (!server.SetupSslCtx(server_certificate_file, server_key_file,
+                          client_root_ca_file)) {
     QUICHE_LOG(ERROR) << "Failed to setup SSL context";
     return 1;
   }