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-rw-r--r--xpcom/build/BinaryPath.h321
1 files changed, 321 insertions, 0 deletions
diff --git a/xpcom/build/BinaryPath.h b/xpcom/build/BinaryPath.h
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+++ b/xpcom/build/BinaryPath.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef mozilla_BinaryPath_h
+#define mozilla_BinaryPath_h
+
+#include "nsXPCOMPrivate.h" // for MAXPATHLEN
+#ifdef XP_WIN
+# include <windows.h>
+#elif defined(XP_MACOSX)
+# include <CoreFoundation/CoreFoundation.h>
+#elif defined(XP_UNIX)
+# include <unistd.h>
+# include <stdlib.h>
+# include <string.h>
+#endif
+#if defined(__FreeBSD__) || defined(__DragonFly__) || \
+ defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__)
+# include <sys/sysctl.h>
+#endif
+#if defined(__OpenBSD__)
+# include <sys/stat.h>
+#endif
+#include "mozilla/UniquePtr.h"
+#include "mozilla/UniquePtrExtensions.h"
+
+#ifdef MOZILLA_INTERNAL_API
+# include "nsCOMPtr.h"
+# include "nsIFile.h"
+# include "nsString.h"
+#endif
+
+namespace mozilla {
+
+class BinaryPath {
+ public:
+#ifdef XP_WIN
+ static nsresult Get(char aResult[MAXPATHLEN]) {
+ wchar_t wide_path[MAXPATHLEN];
+ nsresult rv = GetW(wide_path);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+ WideCharToMultiByte(CP_UTF8, 0, wide_path, -1, aResult, MAXPATHLEN, nullptr,
+ nullptr);
+ return NS_OK;
+ }
+
+ static nsresult GetLong(wchar_t aResult[MAXPATHLEN]) {
+ static bool cached = false;
+ static wchar_t exeLongPath[MAXPATHLEN] = L"";
+
+ if (!cached) {
+ nsresult rv = GetW(exeLongPath);
+
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ if (!::GetLongPathNameW(exeLongPath, exeLongPath, MAXPATHLEN)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ cached = true;
+ }
+
+ if (wcscpy_s(aResult, MAXPATHLEN, exeLongPath)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ return NS_OK;
+ }
+
+ private:
+ static nsresult GetW(wchar_t aResult[MAXPATHLEN]) {
+ static bool cached = false;
+ static wchar_t moduleFileName[MAXPATHLEN] = L"";
+
+ if (!cached) {
+ if (!::GetModuleFileNameW(0, moduleFileName, MAXPATHLEN)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ cached = true;
+ }
+
+ if (wcscpy_s(aResult, MAXPATHLEN, moduleFileName)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ return NS_OK;
+ }
+
+#elif defined(XP_MACOSX)
+ static nsresult Get(char aResult[MAXPATHLEN]) {
+ // Works even if we're not bundled.
+ CFBundleRef appBundle = CFBundleGetMainBundle();
+ if (!appBundle) {
+ return NS_ERROR_FAILURE;
+ }
+
+ CFURLRef executableURL = CFBundleCopyExecutableURL(appBundle);
+ if (!executableURL) {
+ return NS_ERROR_FAILURE;
+ }
+
+ nsresult rv;
+ if (CFURLGetFileSystemRepresentation(executableURL, false, (UInt8*)aResult,
+ MAXPATHLEN)) {
+ // Sanitize path in case the app was launched from Terminal via
+ // './firefox' for example.
+ size_t readPos = 0;
+ size_t writePos = 0;
+ while (aResult[readPos] != '\0') {
+ if (aResult[readPos] == '.' && aResult[readPos + 1] == '/') {
+ readPos += 2;
+ } else {
+ aResult[writePos] = aResult[readPos];
+ readPos++;
+ writePos++;
+ }
+ }
+ aResult[writePos] = '\0';
+ rv = NS_OK;
+ } else {
+ rv = NS_ERROR_FAILURE;
+ }
+
+ CFRelease(executableURL);
+ return rv;
+ }
+
+#elif defined(ANDROID)
+ static nsresult Get(char aResult[MAXPATHLEN]) {
+ // On Android, we use the MOZ_ANDROID_LIBDIR variable that is set by the
+ // Java bootstrap code.
+ const char* libDir = getenv("MOZ_ANDROID_LIBDIR");
+ if (!libDir) {
+ return NS_ERROR_FAILURE;
+ }
+
+ snprintf(aResult, MAXPATHLEN, "%s/%s", libDir, "dummy");
+ aResult[MAXPATHLEN - 1] = '\0';
+ return NS_OK;
+ }
+
+#elif defined(XP_LINUX) || defined(XP_SOLARIS)
+ static nsresult Get(char aResult[MAXPATHLEN]) {
+# if defined(XP_SOLARIS)
+ const char path[] = "/proc/self/path/a.out";
+# else
+ const char path[] = "/proc/self/exe";
+# endif
+
+ ssize_t len = readlink(path, aResult, MAXPATHLEN - 1);
+ if (len < 0) {
+ return NS_ERROR_FAILURE;
+ }
+ aResult[len] = '\0';
+# if defined(XP_LINUX)
+ // Removing suffix " (deleted)" from the binary path
+ const char suffix[] = " (deleted)";
+ const ssize_t suffix_len = sizeof(suffix);
+ if (len >= suffix_len) {
+ char* result_end = &aResult[len - (suffix_len - 1)];
+ if (memcmp(result_end, suffix, suffix_len) == 0) {
+ *result_end = '\0';
+ }
+ }
+# endif
+ return NS_OK;
+ }
+
+#elif defined(__FreeBSD__) || defined(__DragonFly__) || \
+ defined(__FreeBSD_kernel__) || defined(__NetBSD__)
+ static nsresult Get(char aResult[MAXPATHLEN]) {
+ int mib[4];
+ mib[0] = CTL_KERN;
+# ifdef __NetBSD__
+ mib[1] = KERN_PROC_ARGS;
+ mib[2] = -1;
+ mib[3] = KERN_PROC_PATHNAME;
+# else
+ mib[1] = KERN_PROC;
+ mib[2] = KERN_PROC_PATHNAME;
+ mib[3] = -1;
+# endif
+
+ size_t len = MAXPATHLEN;
+ if (sysctl(mib, 4, aResult, &len, nullptr, 0) < 0) {
+ return NS_ERROR_FAILURE;
+ }
+
+ return NS_OK;
+ }
+
+#elif defined(__OpenBSD__)
+ static nsresult Get(char aResult[MAXPATHLEN]) {
+ static bool cached = false;
+ static char cachedPath[MAXPATHLEN];
+ nsresult r;
+ int mib[4];
+ if (cached) {
+ if (strlcpy(aResult, cachedPath, MAXPATHLEN) >= MAXPATHLEN) {
+ return NS_ERROR_FAILURE;
+ }
+ return NS_OK;
+ }
+ mib[0] = CTL_KERN;
+ mib[1] = KERN_PROC_ARGS;
+ mib[2] = getpid();
+ mib[3] = KERN_PROC_ARGV;
+
+ size_t len = 0;
+ if (sysctl(mib, 4, nullptr, &len, nullptr, 0) < 0) {
+ return NS_ERROR_FAILURE;
+ }
+
+ auto argv = MakeUnique<const char*[]>(len / sizeof(const char*));
+ if (sysctl(mib, 4, argv.get(), &len, nullptr, 0) < 0) {
+ return NS_ERROR_FAILURE;
+ }
+
+ r = GetFromArgv0(argv[0], aResult);
+ if (NS_SUCCEEDED(r)) {
+ if (strlcpy(cachedPath, aResult, MAXPATHLEN) >= MAXPATHLEN) {
+ return NS_ERROR_FAILURE;
+ }
+ cached = true;
+ }
+ return r;
+ }
+
+ static nsresult GetFromArgv0(const char* aArgv0, char aResult[MAXPATHLEN]) {
+ struct stat fileStat;
+ // 1) use realpath() on argv[0], which works unless we're loaded from the
+ // PATH. Only do so if argv[0] looks like a path (contains a /).
+ // 2) manually walk through the PATH and look for ourself
+ // 3) give up
+ if (strchr(aArgv0, '/') && realpath(aArgv0, aResult) &&
+ stat(aResult, &fileStat) == 0) {
+ return NS_OK;
+ }
+
+ const char* path = getenv("PATH");
+ if (!path) {
+ return NS_ERROR_FAILURE;
+ }
+
+ char* pathdup = strdup(path);
+ if (!pathdup) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+
+ bool found = false;
+ char* token = strtok(pathdup, ":");
+ while (token) {
+ char tmpPath[MAXPATHLEN];
+ sprintf(tmpPath, "%s/%s", token, aArgv0);
+ if (realpath(tmpPath, aResult) && stat(aResult, &fileStat) == 0) {
+ found = true;
+ break;
+ }
+ token = strtok(nullptr, ":");
+ }
+ free(pathdup);
+ if (found) {
+ return NS_OK;
+ }
+ return NS_ERROR_FAILURE;
+ }
+
+#else
+# error Oops, you need platform-specific code here
+#endif
+
+ public:
+ static UniqueFreePtr<char> Get() {
+ char path[MAXPATHLEN];
+ if (NS_FAILED(Get(path))) {
+ return nullptr;
+ }
+ UniqueFreePtr<char> result;
+ result.reset(strdup(path));
+ return result;
+ }
+
+#ifdef MOZILLA_INTERNAL_API
+ static nsresult GetFile(nsIFile** aResult) {
+ nsCOMPtr<nsIFile> lf;
+# ifdef XP_WIN
+ wchar_t exePath[MAXPATHLEN];
+ nsresult rv = GetW(exePath);
+# else
+ char exePath[MAXPATHLEN];
+ nsresult rv = Get(exePath);
+# endif
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+# ifdef XP_WIN
+ rv = NS_NewLocalFile(nsDependentString(exePath), true, getter_AddRefs(lf));
+# else
+ rv = NS_NewNativeLocalFile(nsDependentCString(exePath), true,
+ getter_AddRefs(lf));
+# endif
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+ NS_ADDREF(*aResult = lf);
+ return NS_OK;
+ }
+#endif
+};
+
+} // namespace mozilla
+
+#endif /* mozilla_BinaryPath_h */
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