The Tor Browser: xpcom/build/BinaryPath.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #ifndef mozilla_BinaryPath_h

     6 #define mozilla_BinaryPath_h

     8 #include "nsXPCOMPrivate.h" // for MAXPATHLEN

     9 #ifdef XP_WIN

    10 #include <windows.h>

    11 #elif defined(XP_MACOSX)

    12 #include <CoreFoundation/CoreFoundation.h>

    13 #elif defined(XP_UNIX)

    14 #include <sys/stat.h>

    15 #include <string.h>

    16 #endif

    18 namespace mozilla {

    20 class BinaryPath {

    21 public:

    22 #ifdef XP_WIN

    23   static nsresult Get(const char *argv0, char aResult[MAXPATHLEN])

    24   {

    25     wchar_t wide_path[MAXPATHLEN];

    26     nsresult rv = GetW(argv0, wide_path);

    27     if (NS_FAILED(rv))

    28       return rv;

    29     WideCharToMultiByte(CP_UTF8, 0, wide_path, -1,

    30                         aResult, MAXPATHLEN, nullptr, nullptr);

    31     return NS_OK;

    32   }

    34 private:

    35   static nsresult GetW(const char *argv0, wchar_t aResult[MAXPATHLEN])

    36   {

    37     if (::GetModuleFileNameW(0, aResult, MAXPATHLEN))

    38       return NS_OK;

    39     return NS_ERROR_FAILURE;

    40   }

    42 #elif defined(XP_MACOSX)

    43   static nsresult Get(const char *argv0, char aResult[MAXPATHLEN])

    44   {

    45     // Works even if we're not bundled.

    46     CFBundleRef appBundle = CFBundleGetMainBundle();

    47     if (!appBundle)

    48       return NS_ERROR_FAILURE;

    50     CFURLRef executableURL = CFBundleCopyExecutableURL(appBundle);

    51     if (!executableURL)

    52       return NS_ERROR_FAILURE;

    54     nsresult rv;

    55     if (CFURLGetFileSystemRepresentation(executableURL, false, (UInt8 *)aResult, MAXPATHLEN))

    56       rv = NS_OK;

    57     else

    58       rv = NS_ERROR_FAILURE;

    59     CFRelease(executableURL);

    60     return rv;

    61   }

    63 #elif defined(ANDROID)

    64   static nsresult Get(const char *argv0, char aResult[MAXPATHLEN])

    65   {

    66     // On Android, we use the GRE_HOME variable that is set by the Java

    67     // bootstrap code.

    68     const char *greHome = getenv("GRE_HOME");

    69 #if defined(MOZ_WIDGET_GONK)

    70     if (!greHome)

    71       greHome = "/system/b2g";

    72 #endif

    74     if (!greHome)

    75       return NS_ERROR_FAILURE;

    77     snprintf(aResult, MAXPATHLEN, "%s/%s", greHome, "dummy");

    78     aResult[MAXPATHLEN-1] = '\0';

    79     return NS_OK;

    80   }

    82 #elif defined(XP_UNIX)

    83   static nsresult Get(const char *argv0, char aResult[MAXPATHLEN])

    84   {

    85     struct stat fileStat;

    86     // on unix, there is no official way to get the path of the current binary.

    87     // instead of using the MOZILLA_FIVE_HOME hack, which doesn't scale to

    88     // multiple applications, we will try a series of techniques:

    89     //

    90     // 1) use realpath() on argv[0], which works unless we're loaded from the

    91     //    PATH. Only do so if argv[0] looks like a path (contains a /).

    92     // 2) manually walk through the PATH and look for ourself

    93     // 3) give up

    94     if (strchr(argv0, '/') && realpath(argv0, aResult) &&

    95         stat(aResult, &fileStat) == 0)

    96       return NS_OK;

    98     const char *path = getenv("PATH");

    99     if (!path)

   100       return NS_ERROR_FAILURE;

   102     char *pathdup = strdup(path);

   103     if (!pathdup)

   104       return NS_ERROR_OUT_OF_MEMORY;

   106     bool found = false;

   107     char *token = strtok(pathdup, ":");

   108     while (token) {

   109       char tmpPath[MAXPATHLEN];

   110       sprintf(tmpPath, "%s/%s", token, argv0);

   111       if (realpath(tmpPath, aResult) && stat(aResult, &fileStat) == 0) {

   112         found = true;

   113         break;

   114       }

   115       token = strtok(nullptr, ":");

   116     }

   117     free(pathdup);

   118     if (found)

   119       return NS_OK;

   120     return NS_ERROR_FAILURE;

   121   }

   123 #else

   124 #error Oops, you need platform-specific code here

   125 #endif

   127 public:

   128   static nsresult GetFile(const char *argv0, nsIFile* *aResult)

   129   {

   130     nsCOMPtr<nsIFile> lf;

   131 #ifdef XP_WIN

   132     wchar_t exePath[MAXPATHLEN];

   133     nsresult rv = GetW(argv0, exePath);

   134 #else

   135     char exePath[MAXPATHLEN];

   136     nsresult rv = Get(argv0, exePath);

   137 #endif

   138     if (NS_FAILED(rv))

   139       return rv;

   140 #ifdef XP_WIN

   141     rv = NS_NewLocalFile(nsDependentString(exePath), true,

   142                          getter_AddRefs(lf));

   143 #else

   144     rv = NS_NewNativeLocalFile(nsDependentCString(exePath), true,

   145                                getter_AddRefs(lf));

   146 #endif

   147     if (NS_FAILED(rv))

   148       return rv;

   149     NS_ADDREF(*aResult = lf);

   150     return NS_OK;

   151   }

   152 };

   154 }

   156 #endif /* mozilla_BinaryPath_h */

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