gecko-dev/toolkit/components/commandlines/nsCommandLine.cpp

661 lines
15 KiB
C++

/* 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 "nsIFileProtocolHandler.h"
#include "nsIURI.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 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;
newfile.forget(aResult);
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;
lf.forget(aResult);
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;
}
lf.forget(aResult);
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);
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;