Add Basilisk

1 files changed, 321 insertions, 0 deletions

diff --git a/application/basilisk/app/nsBrowserApp.cpp b/application/basilisk/app/nsBrowserApp.cpp
new file mode 100644
index 000000000..fc7876209
--- /dev/null
+++ b/application/basilisk/app/nsBrowserApp.cpp
@@ -0,0 +1,321 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsXULAppAPI.h"
+#include "mozilla/XREAppData.h"
+#include "application.ini.h"
+#include "mozilla/Bootstrap.h"
+#if defined(XP_WIN)
+#include <windows.h>
+#include <stdlib.h>
+#elif defined(XP_UNIX)
+#include <sys/resource.h>
+#include <unistd.h>
+#endif
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <time.h>
+
+#include "nsCOMPtr.h"
+#include "nsIFile.h"
+#include "nsStringGlue.h"
+
+#ifdef XP_WIN
+#ifdef MOZ_ASAN
+// ASAN requires firefox.exe to be built with -MD, and it's OK if we don't
+// support Windows XP SP2 in ASAN builds.
+#define XRE_DONT_SUPPORT_XPSP2
+#endif
+#define XRE_WANT_ENVIRON
+#define strcasecmp _stricmp
+#ifdef MOZ_SANDBOX
+#include "mozilla/sandboxing/SandboxInitialization.h"
+#endif
+#endif
+#include "BinaryPath.h"
+
+#include "nsXPCOMPrivate.h" // for MAXPATHLEN and XPCOM_DLL
+
+#include "mozilla/Sprintf.h"
+#include "mozilla/Telemetry.h"
+#include "mozilla/WindowsDllBlocklist.h"
+
+#ifdef LIBFUZZER
+#include "FuzzerDefs.h"
+#endif
+
+#ifdef MOZ_LINUX_32_SSE2_STARTUP_ERROR
+#include <cpuid.h>
+#include "mozilla/Unused.h"
+
+static bool
+IsSSE2Available()
+{
+  // The rest of the app has been compiled to assume that SSE2 is present
+  // unconditionally, so we can't use the normal copy of SSE.cpp here.
+  // Since SSE.cpp caches the results and we need them only transiently,
+  // instead of #including SSE.cpp here, let's just inline the specific check
+  // that's needed.
+  unsigned int level = 1u;
+  unsigned int eax, ebx, ecx, edx;
+  unsigned int bits = (1u<<26);
+  unsigned int max = __get_cpuid_max(0, nullptr);
+  if (level > max) {
+    return false;
+  }
+  __cpuid_count(level, 0, eax, ebx, ecx, edx);
+  return (edx & bits) == bits;
+}
+
+static const char sSSE2Message[] =
+    "This browser version requires a processor with the SSE2 instruction "
+    "set extension.\nYou may be able to obtain a version that does not "
+    "require SSE2 from your Linux distribution.\n";
+
+__attribute__((constructor))
+static void
+SSE2Check()
+{
+  if (IsSSE2Available()) {
+    return;
+  }
+  // Using write() in order to avoid jemalloc-based buffering. Ignoring return
+  // values, since there isn't much we could do on failure and there is no
+  // point in trying to recover from errors.
+  MOZ_UNUSED(write(STDERR_FILENO,
+                   sSSE2Message,
+                   MOZ_ARRAY_LENGTH(sSSE2Message) - 1));
+  // _exit() instead of exit() to avoid running the usual "at exit" code.
+  _exit(255);
+}
+#endif
+
+#if !defined(MOZ_WIDGET_COCOA) && !defined(MOZ_WIDGET_ANDROID)
+#define MOZ_BROWSER_CAN_BE_CONTENTPROC
+#include "../../ipc/contentproc/plugin-container.cpp"
+#endif
+
+using namespace mozilla;
+
+#ifdef XP_MACOSX
+#define kOSXResourcesFolder "Resources"
+#endif
+#define kDesktopFolder "browser"
+
+static void Output(const char *fmt, ... )
+{
+  va_list ap;
+  va_start(ap, fmt);
+
+#ifndef XP_WIN
+  vfprintf(stderr, fmt, ap);
+#else
+  char msg[2048];
+  vsnprintf_s(msg, _countof(msg), _TRUNCATE, fmt, ap);
+
+  wchar_t wide_msg[2048];
+  MultiByteToWideChar(CP_UTF8,
+                      0,
+                      msg,
+                      -1,
+                      wide_msg,
+                      _countof(wide_msg));
+#if MOZ_WINCONSOLE
+  fwprintf_s(stderr, wide_msg);
+#else
+  // Linking user32 at load-time interferes with the DLL blocklist (bug 932100).
+  // This is a rare codepath, so we can load user32 at run-time instead.
+  HMODULE user32 = LoadLibraryW(L"user32.dll");
+  if (user32) {
+    decltype(MessageBoxW)* messageBoxW =
+      (decltype(MessageBoxW)*) GetProcAddress(user32, "MessageBoxW");
+    if (messageBoxW) {
+      messageBoxW(nullptr, wide_msg, L"Basilisk", MB_OK
+                                                | MB_ICONERROR
+                                                | MB_SETFOREGROUND);
+    }
+    FreeLibrary(user32);
+  }
+#endif
+#endif
+
+  va_end(ap);
+}
+
+/**
+ * Return true if |arg| matches the given argument name.
+ */
+static bool IsArg(const char* arg, const char* s)
+{
+  if (*arg == '-')
+  {
+    if (*++arg == '-')
+      ++arg;
+    return !strcasecmp(arg, s);
+  }
+
+#if defined(XP_WIN)
+  if (*arg == '/')
+    return !strcasecmp(++arg, s);
+#endif
+
+  return false;
+}
+
+Bootstrap::UniquePtr gBootstrap;
+
+static int do_main(int argc, char* argv[], char* envp[])
+{
+  // Allow firefox.exe to launch XULRunner apps via -app <application.ini>
+  // Note that -app must be the *first* argument.
+  const char *appDataFile = getenv("XUL_APP_FILE");
+  if ((!appDataFile || !*appDataFile) &&
+      (argc > 1 && IsArg(argv[1], "app"))) {
+    if (argc == 2) {
+      Output("Incorrect number of arguments passed to -app");
+      return 255;
+    }
+    appDataFile = argv[2];
+
+    char appEnv[MAXPATHLEN];
+    SprintfLiteral(appEnv, "XUL_APP_FILE=%s", argv[2]);
+    if (putenv(strdup(appEnv))) {
+      Output("Couldn't set %s.\n", appEnv);
+      return 255;
+    }
+    argv[2] = argv[0];
+    argv += 2;
+    argc -= 2;
+  } else if (argc > 1 && IsArg(argv[1], "xpcshell")) {
+    for (int i = 1; i < argc; i++) {
+      argv[i] = argv[i + 1];
+    }
+
+    XREShellData shellData;
+#if defined(XP_WIN) && defined(MOZ_SANDBOX)
+    shellData.sandboxBrokerServices =
+      sandboxing::GetInitializedBrokerServices();
+#endif
+
+    return gBootstrap->XRE_XPCShellMain(--argc, argv, envp, &shellData);
+  }
+
+  BootstrapConfig config;
+
+  if (appDataFile && *appDataFile) {
+    config.appData = nullptr;
+    config.appDataPath = appDataFile;
+  } else {
+    // no -app flag so we use the compiled-in app data
+    config.appData = &sAppData;
+    config.appDataPath = kDesktopFolder;
+  }
+
+#if defined(XP_WIN) && defined(MOZ_SANDBOX)
+  sandbox::BrokerServices* brokerServices =
+    sandboxing::GetInitializedBrokerServices();
+#if defined(MOZ_CONTENT_SANDBOX)
+  if (!brokerServices) {
+    Output("Couldn't initialize the broker services.\n");
+    return 255;
+  }
+#endif
+  config.sandboxBrokerServices = brokerServices;
+#endif
+
+#ifdef LIBFUZZER
+  if (getenv("LIBFUZZER"))
+    gBootstrap->XRE_LibFuzzerSetDriver(fuzzer::FuzzerDriver);
+#endif
+
+  return gBootstrap->XRE_main(argc, argv, config);
+}
+
+static nsresult
+InitXPCOMGlue(const char *argv0)
+{
+  UniqueFreePtr<char> exePath = BinaryPath::Get(argv0);
+  if (!exePath) {
+    Output("Couldn't find the application directory.\n");
+    return NS_ERROR_FAILURE;
+  }
+
+  gBootstrap = mozilla::GetBootstrap(exePath.get());
+  if (!gBootstrap) {
+    Output("Couldn't load XPCOM.\n");
+    return NS_ERROR_FAILURE;
+  }
+
+  // This will set this thread as the main thread.
+  gBootstrap->NS_LogInit();
+
+  return NS_OK;
+}
+
+int main(int argc, char* argv[], char* envp[])
+{
+  mozilla::TimeStamp start = mozilla::TimeStamp::Now();
+
+#ifdef HAS_DLL_BLOCKLIST
+  DllBlocklist_Initialize();
+#endif
+
+#ifdef MOZ_BROWSER_CAN_BE_CONTENTPROC
+  // We are launching as a content process, delegate to the appropriate
+  // main
+  if (argc > 1 && IsArg(argv[1], "contentproc")) {
+#if defined(XP_WIN) && defined(MOZ_SANDBOX)
+    // We need to initialize the sandbox TargetServices before InitXPCOMGlue
+    // because we might need the sandbox broker to give access to some files.
+    if (IsSandboxedProcess() && !sandboxing::GetInitializedTargetServices()) {
+      Output("Failed to initialize the sandbox target services.");
+      return 255;
+    }
+#endif
+
+    nsresult rv = InitXPCOMGlue(argv[0]);
+    if (NS_FAILED(rv)) {
+      return 255;
+    }
+
+    int result = content_process_main(gBootstrap.get(), argc, argv);
+
+    // InitXPCOMGlue calls NS_LogInit, so we need to balance it here.
+    gBootstrap->NS_LogTerm();
+
+    return result;
+  }
+#endif
+
+
+  nsresult rv = InitXPCOMGlue(argv[0]);
+  if (NS_FAILED(rv)) {
+    return 255;
+  }
+
+  gBootstrap->XRE_StartupTimelineRecord(mozilla::StartupTimeline::START, start);
+
+#ifdef MOZ_BROWSER_CAN_BE_CONTENTPROC
+  gBootstrap->XRE_EnableSameExecutableForContentProc();
+#endif
+
+  int result = do_main(argc, argv, envp);
+
+  gBootstrap->NS_LogTerm();
+
+#ifdef XP_MACOSX
+  // Allow writes again. While we would like to catch writes from static
+  // destructors to allow early exits to use _exit, we know that there is
+  // at least one such write that we don't control (see bug 826029). For
+  // now we enable writes again and early exits will have to use exit instead
+  // of _exit.
+  gBootstrap->XRE_StopLateWriteChecks();
+#endif
+
+  gBootstrap.reset();
+
+  return result;
+}