The Tor Browser: toolkit/components/commandlines/nsCommandLine.cpp@6474c204b198 (annotated)

toolkit/components/commandlines/nsCommandLine.cpp@6474c204b198 (annotated)

toolkit/components/commandlines/nsCommandLine.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

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

 /* 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 "nsICommandLineRunner.h"
 #include "nsICategoryManager.h"
 #include "nsICommandLineHandler.h"
 #include "nsICommandLineValidator.h"
 #include "nsIConsoleService.h"
 #include "nsIClassInfoImpl.h"
 #include "nsIDOMWindow.h"
 #include "nsIFile.h"
 #include "nsISimpleEnumerator.h"
 #include "nsIStringEnumerator.h"
 #include "nsCOMPtr.h"
 #include "mozilla/ModuleUtils.h"
 #include "nsISupportsImpl.h"
 #include "nsNativeCharsetUtils.h"
 #include "nsNetUtil.h"
 #include "nsUnicharUtils.h"
 #include "nsTArray.h"
 #include "nsTextFormatter.h"
 #include "nsXPCOMCID.h"
 #include "plstr.h"
 #include "mozilla/Attributes.h"
 #ifdef MOZ_WIDGET_COCOA
 #include <CoreFoundation/CoreFoundation.h>
 #include "nsILocalFileMac.h"
 #elif defined(XP_WIN)
 #include <windows.h>
 #include <shlobj.h>
 #elif defined(XP_UNIX)
 #include <unistd.h>
 #endif
 #ifdef DEBUG_bsmedberg
 #define DEBUG_COMMANDLINE
 #endif
 #define NS_COMMANDLINE_CID \
   { 0x23bcc750, 0xdc20, 0x460b, { 0xb2, 0xd4, 0x74, 0xd8, 0xf5, 0x8d, 0x36, 0x15 } }
 class nsCommandLine MOZ_FINAL : public nsICommandLineRunner
 {
 public:
   NS_DECL_ISUPPORTS
   NS_DECL_NSICOMMANDLINE
   NS_DECL_NSICOMMANDLINERUNNER
   nsCommandLine();
 protected:
   ~nsCommandLine() { }
   typedef nsresult (*EnumerateHandlersCallback)(nsICommandLineHandler* aHandler,
 					nsICommandLine* aThis,
 					void *aClosure);
   typedef nsresult (*EnumerateValidatorsCallback)(nsICommandLineValidator* aValidator,
 					nsICommandLine* aThis,
 					void *aClosure);
   void appendArg(const char* arg);
   void resolveShortcutURL(nsIFile* aFile, nsACString& outURL);
   nsresult EnumerateHandlers(EnumerateHandlersCallback aCallback, void *aClosure);
   nsresult EnumerateValidators(EnumerateValidatorsCallback aCallback, void *aClosure);
   nsTArray<nsString>      mArgs;
   uint32_t                mState;
   nsCOMPtr<nsIFile>       mWorkingDir;
   nsCOMPtr<nsIDOMWindow>  mWindowContext;
   bool                    mPreventDefault;
 };
 nsCommandLine::nsCommandLine() :
   mState(STATE_INITIAL_LAUNCH),
   mPreventDefault(false)
 {
 }
 NS_IMPL_CLASSINFO(nsCommandLine, nullptr, 0, NS_COMMANDLINE_CID)
 NS_IMPL_ISUPPORTS_CI(nsCommandLine,
                      nsICommandLine,
                      nsICommandLineRunner)
 NS_IMETHODIMP
 nsCommandLine::GetLength(int32_t *aResult)
 {
   *aResult = int32_t(mArgs.Length());
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCommandLine::GetArgument(int32_t aIndex, nsAString& aResult)
 {
   NS_ENSURE_ARG_MIN(aIndex, 0);
   NS_ENSURE_ARG_MAX(aIndex, int32_t(mArgs.Length() - 1));
   aResult = mArgs[aIndex];
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCommandLine::FindFlag(const nsAString& aFlag, bool aCaseSensitive, int32_t *aResult)
 {
   NS_ENSURE_ARG(!aFlag.IsEmpty());
   nsDefaultStringComparator caseCmp;
   nsCaseInsensitiveStringComparator caseICmp;
   nsStringComparator& c = aCaseSensitive ?
     static_cast<nsStringComparator&>(caseCmp) :
     static_cast<nsStringComparator&>(caseICmp);
   for (uint32_t f = 0; f < mArgs.Length(); f++) {
     const nsString &arg = mArgs[f];
     if (arg.Length() >= 2 && arg.First() == char16_t('-')) {
       if (aFlag.Equals(Substring(arg, 1), c)) {
         *aResult = f;
         return NS_OK;
       }
     }
   }
   *aResult = -1;
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCommandLine::RemoveArguments(int32_t aStart, int32_t aEnd)
 {
   NS_ENSURE_ARG_MIN(aStart, 0);
   NS_ENSURE_ARG_MAX(uint32_t(aEnd) + 1, mArgs.Length());
   for (int32_t i = aEnd; i >= aStart; --i) {
     mArgs.RemoveElementAt(i);
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCommandLine::HandleFlag(const nsAString& aFlag, bool aCaseSensitive,
                           bool *aResult)
 {
   nsresult rv;
   int32_t found;
   rv = FindFlag(aFlag, aCaseSensitive, &found);
   NS_ENSURE_SUCCESS(rv, rv);
   if (found == -1) {
     *aResult = false;
     return NS_OK;
   }
   *aResult = true;
   RemoveArguments(found, found);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCommandLine::HandleFlagWithParam(const nsAString& aFlag, bool aCaseSensitive,
                                    nsAString& aResult)
 {
   nsresult rv;
   int32_t found;
   rv = FindFlag(aFlag, aCaseSensitive, &found);
   NS_ENSURE_SUCCESS(rv, rv);
   if (found == -1) {
     aResult.SetIsVoid(true);
     return NS_OK;
   }
   if (found == int32_t(mArgs.Length()) - 1) {
     return NS_ERROR_INVALID_ARG;
   }
   ++found;
   if (mArgs[found].First() == '-') {
     return NS_ERROR_INVALID_ARG;
   }
   aResult = mArgs[found];
   RemoveArguments(found - 1, found);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCommandLine::GetState(uint32_t *aResult)
 {
   *aResult = mState;
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCommandLine::GetPreventDefault(bool *aResult)
 {
   *aResult = mPreventDefault;
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCommandLine::SetPreventDefault(bool aValue)
 {
   mPreventDefault = aValue;
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCommandLine::GetWorkingDirectory(nsIFile* *aResult)
 {
   NS_ENSURE_TRUE(mWorkingDir, NS_ERROR_NOT_INITIALIZED);
   NS_ADDREF(*aResult = mWorkingDir);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCommandLine::GetWindowContext(nsIDOMWindow* *aResult)
 {
   NS_IF_ADDREF(*aResult = mWindowContext);
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCommandLine::SetWindowContext(nsIDOMWindow* aValue)
 {
   mWindowContext = aValue;
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCommandLine::ResolveFile(const nsAString& aArgument, nsIFile* *aResult)
 {
   NS_ENSURE_TRUE(mWorkingDir, NS_ERROR_NOT_INITIALIZED);
   // This is some seriously screwed-up code. nsIFile.appendRelativeNativePath
   // explicitly does not accept .. or . path parts, but that is exactly what we
   // need here. So we hack around it.
   nsresult rv;
 #if defined(MOZ_WIDGET_COCOA)
   nsCOMPtr<nsILocalFileMac> lfm (do_QueryInterface(mWorkingDir));
   NS_ENSURE_TRUE(lfm, NS_ERROR_NO_INTERFACE);
   nsCOMPtr<nsILocalFileMac> newfile (do_CreateInstance(NS_LOCAL_FILE_CONTRACTID));
   NS_ENSURE_TRUE(newfile, NS_ERROR_OUT_OF_MEMORY);
   CFURLRef baseurl;
   rv = lfm->GetCFURL(&baseurl);
   NS_ENSURE_SUCCESS(rv, rv);
   nsAutoCString path;
   NS_CopyUnicodeToNative(aArgument, path);
   CFURLRef newurl =
     CFURLCreateFromFileSystemRepresentationRelativeToBase(nullptr, (const UInt8*) path.get(),
                                                           path.Length(),
                                                           true, baseurl);
   CFRelease(baseurl);
   rv = newfile->InitWithCFURL(newurl);
   CFRelease(newurl);
   if (NS_FAILED(rv)) return rv;
   NS_ADDREF(*aResult = newfile);
   return NS_OK;
 #elif defined(XP_UNIX)
   nsCOMPtr<nsIFile> lf (do_CreateInstance(NS_LOCAL_FILE_CONTRACTID));
   NS_ENSURE_TRUE(lf, NS_ERROR_OUT_OF_MEMORY);
   if (aArgument.First() == '/') {
     // absolute path
     rv = lf->InitWithPath(aArgument);
     if (NS_FAILED(rv)) return rv;
     NS_ADDREF(*aResult = lf);
     return NS_OK;
   }
   nsAutoCString nativeArg;
   NS_CopyUnicodeToNative(aArgument, nativeArg);
   nsAutoCString newpath;
   mWorkingDir->GetNativePath(newpath);
   newpath.Append('/');
   newpath.Append(nativeArg);
   rv = lf->InitWithNativePath(newpath);
   if (NS_FAILED(rv)) return rv;
   rv = lf->Normalize();
   if (NS_FAILED(rv)) return rv;
   NS_ADDREF(*aResult = lf);
   return NS_OK;
 #elif defined(XP_WIN32)
   nsCOMPtr<nsIFile> lf (do_CreateInstance(NS_LOCAL_FILE_CONTRACTID));
   NS_ENSURE_TRUE(lf, NS_ERROR_OUT_OF_MEMORY);
   rv = lf->InitWithPath(aArgument);
   if (NS_FAILED(rv)) {
     // If it's a relative path, the Init is *going* to fail. We use string magic and
     // win32 _fullpath. Note that paths of the form "\Relative\To\CurDrive" are
     // going to fail, and I haven't figured out a way to work around this without
     // the PathCombine() function, which is not available in plain win95/nt4
     nsAutoString fullPath;
     mWorkingDir->GetPath(fullPath);
     fullPath.Append('\\');
     fullPath.Append(aArgument);
     WCHAR pathBuf[MAX_PATH];
     if (!_wfullpath(pathBuf, fullPath.get(), MAX_PATH))
       return NS_ERROR_FAILURE;
     rv = lf->InitWithPath(nsDependentString(pathBuf));
     if (NS_FAILED(rv)) return rv;
   }
   NS_ADDREF(*aResult = lf);
   return NS_OK;
 #else
 #error Need platform-specific logic here.
 #endif
 }
 NS_IMETHODIMP
 nsCommandLine::ResolveURI(const nsAString& aArgument, nsIURI* *aResult)
 {
   nsresult rv;
   // First, we try to init the argument as an absolute file path. If this doesn't
   // work, it is an absolute or relative URI.
   nsCOMPtr<nsIIOService> io = do_GetIOService();
   NS_ENSURE_TRUE(io, NS_ERROR_OUT_OF_MEMORY);
   nsCOMPtr<nsIURI> workingDirURI;
   if (mWorkingDir) {
     io->NewFileURI(mWorkingDir, getter_AddRefs(workingDirURI));
   }
   nsCOMPtr<nsIFile> lf (do_CreateInstance(NS_LOCAL_FILE_CONTRACTID));
   rv = lf->InitWithPath(aArgument);
   if (NS_SUCCEEDED(rv)) {
     lf->Normalize();
     nsAutoCString url;
     // Try to resolve the url for .url files.
     resolveShortcutURL(lf, url);
     if (!url.IsEmpty()) {
       return io->NewURI(url,
                         nullptr,
                         workingDirURI,
                         aResult);
     }
     return io->NewFileURI(lf, aResult);
   }
   return io->NewURI(NS_ConvertUTF16toUTF8(aArgument),
                     nullptr,
                     workingDirURI,
                     aResult);
 }
 void
 nsCommandLine::appendArg(const char* arg)
 {
 #ifdef DEBUG_COMMANDLINE
   printf("Adding XP arg: %s\n", arg);
 #endif
   nsAutoString warg;
 #ifdef XP_WIN
   CopyUTF8toUTF16(nsDependentCString(arg), warg);
 #else
   NS_CopyNativeToUnicode(nsDependentCString(arg), warg);
 #endif
   mArgs.AppendElement(warg);
 }
 void
 nsCommandLine::resolveShortcutURL(nsIFile* aFile, nsACString& outURL)
 {
   nsCOMPtr<nsIFileProtocolHandler> fph;
   nsresult rv = NS_GetFileProtocolHandler(getter_AddRefs(fph));
   if (NS_FAILED(rv))
     return;
   nsCOMPtr<nsIURI> uri;
   rv = fph->ReadURLFile(aFile, getter_AddRefs(uri));
   if (NS_FAILED(rv))
     return;
   uri->GetSpec(outURL);
 }
 NS_IMETHODIMP
 nsCommandLine::Init(int32_t argc, const char* const* argv, nsIFile* aWorkingDir,
                     uint32_t aState)
 {
   NS_ENSURE_ARG_MAX(aState, 2);
   int32_t i;
   mWorkingDir = aWorkingDir;
   // skip argv[0], we don't want it
   for (i = 1; i < argc; ++i) {
     const char* curarg = argv[i];
 #ifdef DEBUG_COMMANDLINE
     printf("Testing native arg %i: '%s'\n", i, curarg);
 #endif
 #if defined(XP_WIN)
     if (*curarg == '/') {
       char* dup = PL_strdup(curarg);
       if (!dup) return NS_ERROR_OUT_OF_MEMORY;
       *dup = '-';
       char* colon = PL_strchr(dup, ':');
       if (colon) {
         *colon = '\0';
         appendArg(dup);
         appendArg(colon+1);
       } else {
         appendArg(dup);
       }
       PL_strfree(dup);
       continue;
     }
 #endif
 #ifdef XP_UNIX
     if (*curarg == '-' &&
         *(curarg+1) == '-') {
       ++curarg;
       char* dup = PL_strdup(curarg);
       if (!dup) return NS_ERROR_OUT_OF_MEMORY;
       char* eq = PL_strchr(dup, '=');
       if (eq) {
         *eq = '\0';
         appendArg(dup);
         appendArg(eq + 1);
       } else {
         appendArg(dup);
       }
       PL_strfree(dup);
       continue;
     }
 #endif
     appendArg(curarg);
   }
   mState = aState;
   return NS_OK;
 }
 static void
 LogConsoleMessage(const char16_t* fmt, ...)
 {
   va_list args;
   va_start(args, fmt);
   char16_t* msg = nsTextFormatter::vsmprintf(fmt, args);
   va_end(args);
   nsCOMPtr<nsIConsoleService> cs = do_GetService("@mozilla.org/consoleservice;1");
   if (cs)
     cs->LogStringMessage(msg);
   NS_Free(msg);
 }
 nsresult
 nsCommandLine::EnumerateHandlers(EnumerateHandlersCallback aCallback, void *aClosure)
 {
   nsresult rv;
   nsCOMPtr<nsICategoryManager> catman
     (do_GetService(NS_CATEGORYMANAGER_CONTRACTID));
   NS_ENSURE_TRUE(catman, NS_ERROR_UNEXPECTED);
   nsCOMPtr<nsISimpleEnumerator> entenum;
   rv = catman->EnumerateCategory("command-line-handler",
                                  getter_AddRefs(entenum));
   NS_ENSURE_SUCCESS(rv, rv);
   nsCOMPtr<nsIUTF8StringEnumerator> strenum (do_QueryInterface(entenum));
   NS_ENSURE_TRUE(strenum, NS_ERROR_UNEXPECTED);
   nsAutoCString entry;
   bool hasMore;
   while (NS_SUCCEEDED(strenum->HasMore(&hasMore)) && hasMore) {
     strenum->GetNext(entry);
     nsCString contractID;
     rv = catman->GetCategoryEntry("command-line-handler",
 				  entry.get(),
 				  getter_Copies(contractID));
     if (NS_FAILED(rv))
       continue;
     nsCOMPtr<nsICommandLineHandler> clh(do_GetService(contractID.get()));
     if (!clh) {
       LogConsoleMessage(MOZ_UTF16("Contract ID '%s' was registered as a command line handler for entry '%s', but could not be created."),
                         contractID.get(), entry.get());
       continue;
     }
     rv = (aCallback)(clh, this, aClosure);
     if (rv == NS_ERROR_ABORT)
       break;
     rv = NS_OK;
   }
   return rv;
 }
 nsresult
 nsCommandLine::EnumerateValidators(EnumerateValidatorsCallback aCallback, void *aClosure)
 {
   nsresult rv;
   nsCOMPtr<nsICategoryManager> catman
     (do_GetService(NS_CATEGORYMANAGER_CONTRACTID));
   NS_ENSURE_TRUE(catman, NS_ERROR_UNEXPECTED);
   nsCOMPtr<nsISimpleEnumerator> entenum;
   rv = catman->EnumerateCategory("command-line-validator",
                                  getter_AddRefs(entenum));
   NS_ENSURE_SUCCESS(rv, rv);
   nsCOMPtr<nsIUTF8StringEnumerator> strenum (do_QueryInterface(entenum));
   NS_ENSURE_TRUE(strenum, NS_ERROR_UNEXPECTED);
   nsAutoCString entry;
   bool hasMore;
   while (NS_SUCCEEDED(strenum->HasMore(&hasMore)) && hasMore) {
     strenum->GetNext(entry);
     nsXPIDLCString contractID;
     rv = catman->GetCategoryEntry("command-line-validator",
 				  entry.get(),
 				  getter_Copies(contractID));
     if (!contractID)
       continue;
     nsCOMPtr<nsICommandLineValidator> clv(do_GetService(contractID.get()));
     if (!clv)
       continue;
     rv = (aCallback)(clv, this, aClosure);
     if (rv == NS_ERROR_ABORT)
       break;
     rv = NS_OK;
   }
   return rv;
 }
 static nsresult
 EnumValidate(nsICommandLineValidator* aValidator, nsICommandLine* aThis, void*)
 {
   return aValidator->Validate(aThis);
 }
 static nsresult
 EnumRun(nsICommandLineHandler* aHandler, nsICommandLine* aThis, void*)
 {
   return aHandler->Handle(aThis);
 }
 NS_IMETHODIMP
 nsCommandLine::Run()
 {
   nsresult rv;
   rv = EnumerateValidators(EnumValidate, nullptr);
   if (rv == NS_ERROR_ABORT)
     return rv;
   rv = EnumerateHandlers(EnumRun, nullptr);
   if (rv == NS_ERROR_ABORT)
     return rv;
   return NS_OK;
 }
 static nsresult
 EnumHelp(nsICommandLineHandler* aHandler, nsICommandLine* aThis, void* aClosure)
 {
   nsresult rv;
   nsCString text;
   rv = aHandler->GetHelpInfo(text);
   if (NS_SUCCEEDED(rv)) {
     NS_ASSERTION(text.Length() == 0 || text.Last() == '\n',
                  "Help text from command line handlers should end in a newline.");
     nsACString* totalText = reinterpret_cast<nsACString*>(aClosure);
     totalText->Append(text);
   }
   return NS_OK;
 }
 NS_IMETHODIMP
 nsCommandLine::GetHelpText(nsACString& aResult)
 {
   EnumerateHandlers(EnumHelp, &aResult);
   return NS_OK;
 }
 NS_GENERIC_FACTORY_CONSTRUCTOR(nsCommandLine)
 NS_DEFINE_NAMED_CID(NS_COMMANDLINE_CID);
 static const mozilla::Module::CIDEntry kCommandLineCIDs[] = {
   { &kNS_COMMANDLINE_CID, false, nullptr, nsCommandLineConstructor },
   { nullptr }
 };
 static const mozilla::Module::ContractIDEntry kCommandLineContracts[] = {
   { "@mozilla.org/toolkit/command-line;1", &kNS_COMMANDLINE_CID },
   { nullptr }
 };
 static const mozilla::Module kCommandLineModule = {
   mozilla::Module::kVersion,
   kCommandLineCIDs,
   kCommandLineContracts
 };
 NSMODULE_DEFN(CommandLineModule) = &kCommandLineModule;

The Tor Browser / annotate

toolkit/components/commandlines/nsCommandLine.cpp@6474c204b198 (annotated)

toolkit/components/commandlines/nsCommandLine.cpp